METHODS AND SYSTEMS FOR CLEANING AN ELECTRICALLY POWERED PORTABLE SELF-CONTAINED CLIMATE CONTROLLED STORAGE UNIT

Methods or systems for cleaning an electrically powered portable self-contained climate controlled storage unit is discussed. The methods or systems include a sensor monitoring a safety condition of the electrically powered portable self-contained climate controlled storage unit; a controller receiving a reading related to the safety condition from the sensor; the controller performing a safety check based on the reading received from the sensor; and the controller instructing the cleaning unit to clean the electrically powered portable self-contained climate controlled storage unit upon the controller determining the electrically powered portable self-contained climate controlled storage unit is safe to clean based on the safety check.

FIELD

This disclosure relates generally to an electrically powered portable self-contained climate controlled storage unit. More particularly, the disclosure relates to methods and systems for cleaning an electrically powered portable self-contained climate controlled storage unit.

BACKGROUND

A self-contained climate controlled storage unit, such as a refrigerated air freight container (e.g., Air100-RKN and AIR200-RAP from Thermo King and Envirotainer®, etc.), a portable refrigeration container (e.g., ColdCube™ container from Thermo King, Coldtainer® from Thermo King, etc.), etc., provides portable climate controlled storage for cargo (e.g., produce, frozen foods, pharmaceuticals, etc.). In some instances, the cargo can be high value/critical cargo. Self-contained climate controlled storage units are typically battery powered. The battery typically requires charging prior to transport so that the unit can provide and maintain climate control (e.g., temperature, humidity, pressure, etc.) without relying on external power. In many instances, regulatory agencies (e.g., Federal Aviation Administration—FAA, etc.) and trade associations (e.g., International Air Transport Association—IATA, etc.) provide regulations that impose strict performance specifications on self-contained climate controlled storage units. Failure to meet these regulations can result in refusal of certification and entry into, for example, an aircraft.

SUMMARY

This disclosure relates generally to an electrically powered portable self-contained climate controlled storage unit. More particularly, the disclosure relates to methods and systems for cleaning an electrically powered portable self-contained climate controlled storage unit.

In an embodiment, a method for cleaning an electrically powered portable self-contained climate controlled storage unit is disclosed. The method includes a sensor monitoring a safety condition of the electrically powered portable self-contained climate controlled storage unit; a controller receiving a reading related to the safety condition from the sensor; the controller performing a safety check based on the reading received from the sensor; and the controller instructing the cleaning unit to clean the electrically powered portable self-contained climate controlled storage unit upon the controller determining the electrically powered portable self-contained climate controlled storage unit is safe to clean based on the safety check.

In an embodiment, the method includes the controller instructing the cleaning unit to stop cleaning the electrically powered portable self-contained climate controlled storage unit upon the controller determining the electrically powered portable self-contained climate controlled storage unit is unsafe to clean based on the safety check.

In an embodiment, the method includes the controller instructing to clean by turning on a UV-C source of the cleaning unit; and the UV-C source emitting UV-C light in the climate controlled space upon the UV-C source being turned on.

In an embodiment, an electrically powered portable self-contained climate controlled storage system is disclosed. The electrically powered portable self-contained climate controlled storage system includes electrically powered portable self-contained climate controlled storage unit includes a base supporting a climate controlled space, a climate control system configured to provide climate control to the climate controlled space, a door for provide access to the climate controlled space. The system includes a sensor configured to provide a reading related a safety condition of the electrically powered portable self-contained climate controlled storage unit; and a controller configured to receive the reading from the sensor, performing a safety check based on the reading received from the sensor, and instruct a cleaning unit to clean the electrically powered portable self-contained climate controlled storage unit upon the controller determining the electrically powered portable self-contained climate controlled storage unit is safe to clean based on the safety check.

In an embodiment, the electrically powered portable self-contained climate controlled storage system includes the controller instructing the cleaning unit to stop cleaning the electrically powered portable self-contained climate controlled storage unit upon the controller determining the electrically powered portable self-contained climate controlled storage unit is unsafe to clean based on the safety check.

In an embodiment, the cleaning unit includes a UV-C source disposed in the electrically powered portable self-contained climate controlled storage unit and configured to irradiate in the electrically powered portable self-contained climate controlled storage unit to clean the climate controlled space with UV-C light.

In an embodiment, the cleaning unit is disposed on a stand removable from the electrically powered portable self-contained climate controlled storage unit, and the stand supports the cleaning unit.

In an embodiment, the cleaning unit is disposed in the electrically powered portable self-contained climate controlled storage.

In an embodiment, the cleaning unit is disposed in a transport unit that is configured to transport the electrically powered portable self-contained climate controlled storage unit.

As such, systems and methods for cleaning the electrically powered portable electrically powered portable self-contained climate controlled storage unit has at least the following advantages. Since the electrically powered portable self-contained climate controlled storage unit (hereinafter referred to as a “storage unit”) is configured to check for safety condition(s) before proceeding to cleaning with UV-C, harsh chemicals, or the like, the safety of an operator and/or cargo in and near the storage unit can be improved. For example, the storage unit is configured to turn off the cleaning unit when the storage unit is determined to be occupied, such that the system is configured to keep the storage unit cleaned while minimizing risk of damage or injuries to humans and/or cargo, or the like.

Like reference numbers represent like parts throughout.

DETAILED DESCRIPTION

This disclosure relates generally to an electrically powered portable self-contained climate controlled storage unit (PCU). More particularly, the disclosure relates to methods and systems for cleaning an electrically powered portable self-contained climate controlled storage unit.

It is noted that: U.S. application No. ______, “METHOD AND SYSTEM FOR MONITORING WEIGHT/ORIENTATION OF A SELF-CONTAINED CLIMATE CONTROLLED STORAGE UNIT AND ADJUSTING OPERATION BASED ON THE MONITORED WEIGHT/ORIENTATION,” (attorney docket no: 20420.1032US01); U.S. application No. ______, “ELECTRICALLY POWERED PORTABLE SELF-CONTAINED CLIMATE CONTROLLED STORAGE UNIT,” (attorney docket no: 20420.1032USS1); U.S. application No. ______, “METHODS AND SYSTEMS FOR POWER SHARING AND CHARGING COORDINATION OF SELF-CONTAINED CLIMATE CONTROLLED STORAGE UNIT(S),” (attorney docket no: 20420.1034US01); and U.S. application No. ______, “METHOD AND SYSTEM FOR PROVIDING AN INDICATION OF A SYSTEM OPERATING STATUS OR LOGISTICAL OPERATION STATUS OF A SELF-CONTAINED CLIMATE CONTROLLED STORAGE UNIT,” (attorney docket no: 20420.1036US01); all filed concurrently herewith on Nov. ______, 2022, and the contents of which are incorporated herein by reference.

The terms “above”, “below”, “top”, “bottom”, “left”, “right”, and the like described in the present application are defined according to the typical observation angle of a person skilled in the art and for the convenience of the description. These terms are not limited to specific directions but provided for ease of understanding the disclosure. As such, the terms should be interpreted broadly and can include, but not limited to, being directly adjacent, near, or spaced apart from the respective components.

A storage unit, such as a refrigerated air freight container (e.g., Air100-RKN and AIR200-RAP from Thermo King and Envirotainer®, etc.), a portable refrigeration container (e.g., ColdCube™ container from Thermo King, Coldtainer® from Thermo King, etc.), etc., provides portable climate controlled storage for cargo (e.g., produce, frozen foods, pharmaceuticals, biologicals, for example, human tissue, blood, heart, and lung, etc.). In some instances, the cargo can be high value/critical cargo. PCUs are typically battery powered. A storage unit, as defined herein, is capable of autonomous operation (e.g., for a week or more) via battery power. In some embodiments, a full pallet of PCUs can be transported within a transport unit (e.g., a truck, a van, a trailer, an intermodal container, an airplane, etc.). In some embodiments, one or more PCUs can be transported in a vehicle by attaching to the vehicle, for example, by strapping to the bed of a pickup truck or trailer. Embodiments of systems or methods for cleaning of a storage unit are described in additional detail below.

The methods and systems described herein are directed to a storage unit that can be transported in a climate controlled or non-climate controlled transport unit, such as, airplanes, railways, trucks, vans, trailers, intermodal containers, or other similar transport units, and that can self-monitor the weight and/or orientation associated with the storage unit during transport and/or handling.

PCUs can be recharged by connecting to an electricity source, for example, by plugging into an electrical outlet, by connecting to an onboard generator, by receiving power generated from a solar panel, by replacing a removable battery, or the like.

While some of the embodiments discussed below are discussed with respect to a freight container, one skilled in the art would recognize the embodiments discussed herein can be provided for any type of PCU (e.g., air freight containers, portable refrigerated storage boxes, etc.).

The storage unit can have a climate controlled space disposed therein. The climate controlled space can have an internal dimension of a width of about 30 inches to 60 inches, or at about 42 inches for accommodating a standard pallet. The height of the climate controlled space can be between 36 inches and 120 inches, or between 36 inches and 72 inches, since at larger heights, the center of gravity of the storage unit may be higher and could be prone to tipping, e.g., during transportation. It is understood that such disclosure is not intended to be limiting in scope, but provided for understanding the disclosure.

Methods and systems for cleaning a storage unit are described. It is appreciated that cleaning can include sanitizing, disinfecting, sterilizing, or the like, as required and/or defined by regulation authorities and/or understood by one of ordinary skill in the art. Cleaning can include physical, chemical, and/or biological means to remove, reduce, and/or eliminate dusts, debris, greases, microbial (e.g., fungi, bacteria, virus, yeast, etc.), and/or other materials from a surface or space being cleaned. For example, physical means can include spraying with a cleaning fluid (e.g., water, cleaning solution, or the like), blowing with air, exposing to heat or cold temperature, dried air, radiation (e.g., by UV-C light from a UV-C source), or the like. Chemical or biological means can include exposing the surface or space being cleaned with soap, disinfectants, alcohol, chemical gas, enzymatic cleaners, or the like.

Some aspects of cleaning a storage unit may be harmful to human and/or other animals or damaging to cargo. For example, exposure of UV-C light, harsh/liquid chemicals, or the like from the cleaning unit may be prevented and thus prevent potential damage to human organs (e.g., skin or eyes) from irritation, burns, or the like. For another example, exposure of UV-C light, harsh/liquid chemicals, or the like from the cleaning unit may cause damage to cargo, e.g., by liquid damage to cardboard packaging, degrading products (e.g., UV activated materials), cleaning fluid contaminating the cargo, or the like. Embodiments of systems and/or methods for cleaning a storage unit can include a controller determining the safety condition for cleaning the storage unit being safe or unsafe to clean based on at least one sensor disposed in the storage unit and/or a transport unit housing and transporting the storage unit. For example, the controller can prevent the cleaning unit from turning on or can turn off the cleaning unit, when the controller determines that the storage unit is unsafe to clean.

A surface or area being cleaned by the cleaning unit can include an interior or inside of the storage unit (e.g., the climate controlled space of the storage unit) or the like. In some embodiments, the surface or area being cleaned by the cleaning unit may be an exterior surface of the storage unit, for example, by a cleaning unit disposed in a transport unit housing and transporting the storage unit.

FIG.1is a perspective view of a climate controlled transport unit100, according an embodiment.

As shown inFIG.1, the climate controlled transport unit100includes a transport climate control system (TCS)130configured to provide climate control to a climate controlled space120during transportation, storage, or the like. The climate controlled space120can be a volume in the transport unit (TU)150for housing cargo, for example, during transportation, storage, or the like. In some embodiments, the TU150can be attached (e.g., towed, carried, strapped, etc.) to a vehicle190that is configured to move the TU150.

The TCS130can provide climate control to the climate controlled space120. In some embodiments, the TCS130can include a climate control unit135, and/or at least one sensor (e.g.,140,145,146), controller, monitor, or the like.

Climate control can include controlling a climate condition in the climate controlled space120. The climate condition can include temperature, humidity, pressure, air flow, air quality, and/or the like. In an embodiment, the TCS130can provide climate control via a mechanical vapor compression cycle that comprises, e.g., a compressor, an expander, an evaporator, and a condenser fluidly connected by a working fluid. The working fluid can include a refrigerant. In an embodiment, the TCS130can include a heater, an air filter, a passive climate control system (e.g., liquid nitrogen, dry ice, or the like) or the like.

The climate control unit135can be configured to contain mechanical and electrical systems that provide climate control. For example, the climate control unit135can include the compressor, the expander, the evaporator, the condenser, or the like. In an embodiment, the climate control unit135can be configured to contain at least some of the mechanical and electrical systems that provide climate control.

The at least one sensor (e.g.,140,145,146) can be configured to measure one or more condition of the TCS130. For example, the sensors can be configured to acquire a reading or measurement and transmit the reading or measurement to a controller. The reading or measurement can be related to at least one climate condition, operating condition, and/or safety condition. The reading or measurement related to at least one climate condition can include temperature, pressure, humidity, air flow, air quality, or the like. In some embodiments, the reading or measurement related to at least one operating condition can include location sensor, security sensors, conditions of communication sensors/equipment, or the like. The reading or measurement related a safety condition can include any climate condition, operating condition, or a combination thereof, such that a controller can determine a safety condition (e.g., whether a space or area is occupied, and/or safe to clean, or the like). The at least one sensor can be disposed in the climate control unit135, the TU150, and/or the like.

In an embodiment, the at least one sensor can be disposed on in the climate control unit135, e.g., the sensor140, and/or disposed in the TU100, e.g., the sensor145. In an embodiment, the at least one sensor can be disposed outside the transport unit146. In some embodiments, the sensors can be configured to measure the condition inside and/or outside the TU150, the climate controlled transport unit100, and/or the like.

The TU150houses the climate controlled space120(shown by an illustrated see-through opening125). Cargo128can be housed in the climate controlled space120. As illustrated in FIG.1, the climate control unit135of the TCS130can be attached to a front152of the TU150. In some embodiments, one or more accesses can be provided on the TU150for accessing, for example, the climate controlled space120. In some embodiments, the one or more accesses can be one or more doors, for example, located on the front152, a rear154, a side, a top, of the TU150, or the like.

The vehicle190shown inFIG.1is a tractor. In other embodiments, the vehicle190can be a van, a truck, a train cart or chassis, a boat, a ship, or the like.

FIG.2is a rear view of the climate controlled transport unit100, according to the embodiment ofFIG.1.

As shown inFIG.2, the climate controlled transport unit100can include one or more doors160disposed on the rear154of the TU150for providing access to the climate controlled space120. In some embodiments, the doors160can be disposed on the TU150by one or more hinges162hanging the doors160to the TU150.

One or more electrically powered portable self-contained climate controlled storage units (PCU)300can be disposed inside the TU150. In an embodiment, PCU300can be the primary source of climate control for the climate controlled spaces within the storage unit300such that the transport unit100can provide supplemental, backup, passive climate control, or the like. Passive climate control of the transport unit100can include insulation disposed in the TU150, one or more accesses (e.g., doors, hatches, louvers panels, windows, or the like) to allow airflow, or the like. For example, the storage unit300is configured to be placed in the climate controlled transport unit100to provide backup climate control to the climate controlled spaces within the storage unit300should the TCS130is turned off.

In an embodiment, the storage unit300can be configured to provide supplemental climate control to the climate controlled space inside the storage unit300such that the climate condition inside the storage unit300can be different from the climate condition in the TU150(e.g., outside the storage unit300and inside the climate controlled space120).

Referring toFIG.2, the storage unit300can be placed in the TU150. It is appreciated that due to the dimensions of the storage unit300, the storage unit300can be placed side by side and front to back in the TU150for compact packing and transport of the storage unit300. As such, the storage unit300can individually provide the climate control requirements for the cargo housed in the climate controlled spaced respectively in the storage unit300, for example, based on the climate control requirement of the cargo housed therein.

FIG.3is a perspective and schematic view of the storage unit300, according to an embodiment.

The storage unit300can be an electrically powered portable self-contained climate controlled storage unit. The storage unit300can be powered by a battery disposed in the storage unit300. The storage unit300can be portable, for example, by human power, forklift, hand truck or the like, such that the storage unit300can be carried in and out of the TU150. The storage unit300can be fully or partially powered by electricity from a battery included in the storage unit300for providing climate control within an interior space315in the storage unit300. It is appreciated that the storage unit300can be configured to be transported within a shipping container, a containerized truck, or the like, and be provide some or all the climate control capacity to the interior space315. In an embodiment, the interior space315, or a portion of the interior space315, can be a climate controlled space310. In some embodiments, the storage unit300can be transported within a transport unit (e.g., TU150ofFIGS.1and2) as, for example, the cargo of the TU150.

As shown inFIG.3, the storage unit300includes a climate controlled space310and a base320supporting the climate controlled space310. The climate controlled space310can be affixed above the base320, e.g., vertically above the base320, directly above, or to a side of the base320. The storage unit300also includes a climate control system330for cooling and/or heating the climate controlled space310, and a system controller385connected to the storage unit300. As shown inFIG.3, the storage unit300also includes a power source386for supplying power to the climate control system330.

The climate controlled space310includes an insulated housing having an interior space315for housing cargo. In the illustrated embodiment, the insulated housing can include insulated side, bottom, and top walls configured to generally conform to the shape required of the storage unit300. Access to the interior space315can be provided via a door337disposed on the storage unit300for enclosing and/or accessing the cargo.FIG.3illustrates a perspective view of the storage unit300in which the door337is closed. The door337can be kept closed by a securing mechanism338. The securing mechanism338can be operable and accessible via keypad, biometrics, web, key card, mobile, a combination of the same, or the like.

In an embodiment, the climate controlled space310can have a width of about 30 inches to 60 inches, or at about 42 inches for accommodating a standard pallet in the interior space315. The height of the climate controlled space310can be between 36 inches and 120 inches, or between 36 inches and 72 inches, since at larger heights, the center of gravity of the storage unit300may be higher and could be prone to tipping. It is understood that such disclosure is not intended to be limiting in scope, but provided for understanding the disclosure.

The base320includes a housing321having an enclosure322and a plurality of feet353for supporting the storage unit300. In the embodiment shown inFIG.3, the enclosure322includes the climate control system330, a system controller385, and the power source386. The enclosure322can be accessible via a panel323or door323on the housing321. In an embodiment, the plurality of feet353is positioned to support the storage unit300. The plurality of feet353is provided at least at the corners of the base320and/or at or along a center of the base320and/or along the edges of the base320. Slots or openings360are provided between the plurality of feet353. In some embodiments, the slots or openings360can have a width for accepting forks or tines of a forklift or for engaging other lifting and handling machines. In an embodiment, the plurality of feet353can include wheels or retractable wheels, e.g., manual, hydraulic, piston driven, or the like, to allow the moving or repositioning of the storage unit300without a lifting and handling machine.

The climate control system330can be configured to provide climate control (e.g., temperature, humidity, atmosphere, etc.) within the interior space315. In particular, the climate control system330can provide climate control to maintain fresh and/or frozen cargo or provide heated storage for cargo housed within the interior space315via vents and/or communication channels or ducts through the walls of the storage unit300. It will be appreciated that the particular cargo is not limiting. For example, in an embodiment, the cargo can include perishable items such as food, while in another embodiment the cargo can include pharmaceuticals, biologics, or medical equipment, blood, organs, or the like. In an embodiment, the climate control system330can include one or more climate control circuits (not shown). Each of the one or more climate control circuits can include, for example, a compressor, a condenser, an evaporator, and an expansion valve. In an embodiment, one or more condensers (not shown), one or more condenser fans (not shown), and one or more electrical components (e.g., valve(s)) (not shown) can be housed within the climate control system330. There can also be one or more evaporators (not shown) and one or more evaporator fans (not shown) housed within one or both of the enclosure322and the interior space315to provide climate control within the interior space315.

The climate control system330can control one or more conditions in the interior space315. The conditions can include one or more climate conditions (e.g., temperature, pressure, humidity, or the like), one or more operating conditions (e.g., location sensor, security sensors, conditions of communication sensors/equipment, or the like), or the like. In an embodiment, the climate control system330can provide climate control via a mechanical vapor compression cycle.

The climate control system330can provide climate control such as cooling, heating, humidity control, or the like. The climate control system330can include one or more pieces of climate control equipment or components for controlling the climate conditions in the storage unit300. The climate control system330can include mechanical and electrical systems that provide climate control. In an embodiment, the climate control system330can include components for the mechanical vapor compression cycle. For example, climate control system330can include and/or contain the compressor, the expander, the evaporator, the condenser, or the like. The climate control system330can include, e.g., the compressor, the expander, the evaporator, and the condenser fluidly connected by a working fluid. The working fluid can include a refrigerant.

In an embodiment, the climate control system330can include a heater, an air filter, a passive climate control system (e.g., liquid nitrogen, dry ice, insulated wall, or the like) or the like. In some embodiments, the climate control system330can provide climate control to the interior space315disposed in the climate controlled space310.

The system controller385can be configured to control and communicate with the storage unit300, one or more electrical components, at least one sensor, and/or the climate control system330, e.g., the compressor, the one or more condensers, and/or evaporator fans, etc. The system controller385can include a processor and memory for storing data and instructions. In an embodiment, the system controller385can be connected to a human machine interface (HMI)395that can be powered by the power source (e.g., as discussed below as power source386). The HMI395can include a display, touchscreen, keypad, or the like as an interface for controlling or programming of the storage unit300, displaying information related to the storage unit300, or the like. In an embodiment, the information can include shipment details, weight, cargo, battery power, alert/alarm conditions, temperature, humidity, max and min temperatures, or the like. In an embodiment, the HMI395can be integrated with the securing mechanism which has a display for displaying such information.

The power source386can be configured to power the storage unit300, the system controller385, and/or the climate control system330. The power source386can include a battery source (not shown), e.g., battery powered. The battery source386can be supplied with an energy supply source when the self-contained climate controlled storage units are in the climate controlled transport unit or can be supplied with energy (i.e., charged/recharged) prior to being loaded and transported in a transport unit. The battery source386can be configured to provide electrical energy to, for example, the system controller385, the one or more electrical components, the compressor, the one or more condensers and/or evaporator fans, etc.

The battery source386can include one or more battery banks (not shown) with a DC and/or AC charge input (not shown) configured to allow an external power source to charge the one or more battery banks. When charge input includes a DC charge input, the battery source386can also include a DC charge controller, a DC isolation connection, and a DC disconnect switch. When the charge input includes an AC charge input, the battery source386can also include an AC inverter, an AC charger, and an AC disconnect switch and a breaker panel.

The climate controlled space310can include one or more walls, floors, and/or ceilings separating the inside from the outside of the climate controlled space310and enclose a volume therein. The one or more walls, floors, and ceilings can include insulated layers or panel(s) for controlling or reducing heat transfer between the volume therein and the outside of the climate controlled space310. Storage unit equipment, such as a cleaning unit, a lock, a door, a user interface, one or more sensors, and the like, can be disposed on, or connected via, the one or more walls, floors, and/or ceilings of the climate controlled space310. The interior space315can be disposed in the volume in the climate controlled space310.

In an embodiment, the climate controlled space310can include one or more insulated ceilings, walls, and floors configured to generally conform to the shape required of the climate controlled space310. Access to the climate controlled space310can be provided by a door337for enclosing and/or accessing the cargo disposed in the climate controlled space310. In some embodiments, the door318can attach to the climate controlled space310by hanging, hinging, rolling, or the like.

The storage unit300can include a cleaning unit325, such as a UV-C source, a fluid cleaner, or the like. The cleaning unit325can be configured to clean the storage unit300so that the cleanliness of the storage unit300is improved or maintained. For example, the cleaning unit325can be configured to clean an interior of the storage unit300, such as, the interior space315. It is appreciated that the cleaning unit325may be not limited to clean an interior of the storage unit300. For example, the cleaning unit325can be configured to clean an exterior and/or outside of the storage unit300, for example by being disposed and/or protruded outside the storage unit300and cleaning by radiating or spraying on an exterior surface of the storage unit300.

FIG.4is a schematic view of the storage unit300, according to an embodiment. As shown inFIG.4, the door337of the storage unit300is closed.

As shown inFIG.4, the storage unit300includes a securing mechanism338that can operate and/or keep the door337at a desirable position relative to the storage unit300, such as, opened, closed, latched, locked, partially open at a predetermined degrees relative to a wall of the storage unit300or the like. The securing mechanism338can be a door opener, a keypad, biometrics reader, a controller, a lock, a key card reader, an onboard or remote user interface, or the like, or a combination thereof.

The storage unit300includes climate control system330. The climate control system330can provide climate control such as cooling, heating, humidity control, or the like. In some embodiments, the climate control system330can include a climate control unit383, at least one sensor384, a controller385, and a power source386. The climate control system330can include a climate control unit383and/or at least one sensor384.

The climate control unit383can include one or more components for the climate control unit320(e.g., components for the mechanical vapor compression cycle, heater, air filter, or the like) that can be disposed in the base320. In an embodiment, the climate control unit383can include a heater, an air filter, a passive climate control system (e.g., liquid nitrogen, dry ice, wall insulation, or the like) or the like.

The sensor384can be disposed in the storage unit300and configured to measure one or more conditions of the storage unit300, for example, a condition of the storage unit300that is internal and/or external of the storage unit300. The sensor384can transmit one or more sensor reading to and be received by the system controller385.

The system controller385can receive the one or more measurements from the at least one sensor384related of the storage unit300. The system controller385can receive the safety condition and determine a safety condition based on the measurements or readings received from the sensor384. The cleaning safety condition can, for example, an indication that the storage unit300is safe to clean or unsafe to clean. The safety condition can be safe to clean, for example, when the system controller385determined that PCU300is empty (e.g., no weight of the cargo housed or operator in the storage unit300), when the system controller385determines that the door337of the storage unit300is closed and/or secured, when a button or switch is activated, or the like, or a combination thereof. For example, the cleaning safety condition can be safe to clean when the storage unit300is empty and the door337is closed. The cleaning safety condition can be unsafe to clean when the storage unit300occupied by cargo or the door337is open.

It is appreciated that the system controller385can be located in the storage unit300to provide instructions, for example, to the cleaning unit based on the readings or measurements received from the sensor384. In some embodiments, the system controller385can communicate with a remote system to determine and transmit instructions to the cleaning unit325remotely. A remote system can utilize the computational power of a remote system, conserving onboard energy, serviceability, reliability, or the like. The storage unit300can include one or more radio transmitters to send and/or receive sensor measurements and/or instructions.

The system controller385can use the at least one sensor384to measure a condition related to the storage unit300. For example, the sensor384can acquire a measurement of a condition related to the storage unit300. The measurement can be provided to the system controller385to determine the safety condition of the storage unit300. The measurement can be provided for the system controller385to conduct a safety check to determine a condition being safe or unsafe to clean using, for example, the cleaning unit325.

In an embodiment, the sensor384can be an occupancy sensor that provides a measure to the system controller385to conduct a safety check. The safety check can include determining an occupancy of, for example, the interior space315of the storage unit300. The safety check can determine based on the measurement acquired from the sensor354to determine an occupancy of cargo, users, intruders, animals, equipment, or the like. For example, an occupancy sensor can include at least one weight sensor for the storage unit300. The weight sensor can be configured to measure the weight of the cargo or operator in the climate controlled space310, the gross weight of the storage unit300, or the like. The system controller385can receive the measurement from the weight sensor and determine whether the storage unit300is occupied by cargo or an operator, determine whether the gross weight of the storage unit300is above a predetermined weight threshold to deduce that the container is occupied by cargo, user, equipment, or the liquid. For example, the predetermined weight threshold can be the weight of the storage unit300being empty.

In an embodiment, the sensor384can be a door sensor that provides a measurement or reading to the system controller385to determine a position of a door (e.g.,337) that provides access to the climate controlled space310(e.g., the interior space315of the storage unit300). The door sensor can include a mechanical switch or system, a mechanical/magnetic switch or system, a virtual doors sensor (e.g., a camera and a computer vision system), or the like. The door sensor can acquire one or more measurements to determine the position of the door being, opened, closed, or partially closed relative to the storage unit300. In some embodiments, the door sensor384can provide a measurement related to the position of the door such that the system controller385can determine the door being open, close, or the like, to determine the safety condition in instructing the cleaning unit325. It is appreciated that the door sensor is not limited to acquire a measurement related to the door337as illustrated inFIG.4to provide access to human operator, cargo, equipment, or the like. In some embodiments, the door sensor can be configured to acquire a measurement related to other accesses such as a hatch, a window, or the like, for example, to prevent leakage. For example, the leakage of cleaning fluid or radiation out of the storage unit300can cause damage/injuries to passing by human or other objects positioned near the storage unit300.

The base320includes the enclosure322and the plurality of feet353for supporting the base320. In an embodiment, the climate control unit383, the system controller385, and the power source385are included in the enclosure322. The enclosure322can be accessible via a panel or door. In an embodiment, the plurality of feet353is positioned to support the storage unit300. The plurality of feet353is provided at least at the corners of the base320and/or at or along a center of the base320and/or along the edges of the base320. Slots or openings are provided between the plurality of feet353. In some embodiments, the slots or openings can have a width for accepting forks or tines of a forklift or for engaging other lifting and handling machines. In an embodiment, the plurality of feet353can include wheels or retractable wheels, e.g., manual, hydraulic, piston driven, or the like, to allow the moving or repositioning of the storage unit300without a lifting and handling machine.

The climate control unit383can be configured to provide climate control (e.g., temperature, humidity, pressure, etc.) in the interior space315. In an embodiment, the climate control unit383can provide climate control to maintain fresh and/or frozen cargo or provide heated storage for cargo housed within the interior space315via vents and/or communication channels or ducts through the walls of the storage unit300. It will be appreciated that the particular cargo is not limiting. For example, in an embodiment, the cargo can include perishable items such as food, while in another embodiment the cargo can include pharmaceuticals, biologics, or medical equipment, blood, organs, or the like.

In an embodiment, the climate control unit383can include one or more climate control circuits (not shown). Each of the one or more climate control circuits can include, for example, a compressor, a condenser, an evaporator, and an expansion valve. In an embodiment, one or more condensers (not shown), one or more condenser fans (not shown), and one or more electrical components (e.g., valve(s)) (not shown) can be housed within the climate control unit383. There can also be one or more evaporators (not shown) and one or more evaporator fans (not shown) housed within one or both of the climate control unit383and the interior space315to provide climate control within the interior space315.

The system controller385can be configured to control and communicate with the storage unit300, one or more components, the at least one sensor384, and/or the climate control unit383, e.g., the compressor, the one or more condensers, and/or evaporator fans, etc. The system controller385can include a processor and a memory for providing instructions and storing data. In an embodiment, the system controller385can be connected to a human machine interface (HMI)395. The HMI can be powered by the power source (e.g., as discussed below as power source386), a dedicated power source (e.g., an HMI battery), and/or the like. The HMI395can include a display, touchscreen, keypad, or the like as an interface for controlling or programming of the storage unit300, displaying information related to the storage unit300, or the like. In an embodiment, the information can include shipment details, weight, cargo, battery power, alert/alarm conditions, temperature, humidity, max and min temperatures, or the like. In an embodiment, the HMI395can be integrated with the securing mechanism338which has a display for displaying such information. It is appreciated that the HMI395is not limited for an HMI395disposed on the storage unit300as illustrated inFIG.4. For example, an HMI395can be detachable from the storage unit300, a remote device, a user interface, or the like. For example, the user interface can be an application on an electronic device (e.g., tablet, laptop, smartphone, or the like), a web based user interface, a software or mobile app based user interface, or the like. In some embodiments, the system controller385can communicate with the HMI395via wired or wireless communication such as the internet, a cellphone network, a local wired or wireless network, Bluetooth, or the like.

The power source386can be configured to power the storage unit300, the system controller385, and/or the climate control unit383. The power source386can include a battery source (not shown), e.g., battery powered. The battery source386can be supplied with an energy supply source when the storage unit300are in a transport unit (e.g.150ofFIGS.1and2) or can be supplied with energy (i.e., charged/recharged) prior to being loaded and transported in a transport unit. The battery source386can be configured to provide electrical energy to, for example, the system controller385, the one or more electrical components, the compressor, the one or more condensers and/or evaporator fans, etc.

The battery source386can include one or more battery banks (not shown) with a DC and/or AC charge input (not shown) configured to allow an external power source to charge the one or more battery banks. When charge input includes a DC charge input, the battery source386can also include a DC charge controller, a DC isolation connection, and a DC disconnect switch. When the charge input includes an AC charge input, the battery source386can also include an AC inverter, an AC charger, and an AC disconnect switch and a breaker panel.

It is appreciated that, in an embodiment, the storage unit300can be configured such that a center of mass of the storage unit300is located along a central axis CA (shown inFIG.3) of the base320. That is, components, e.g., batteries, compressor, evaporator, etc., which have a weight associated therewith, are arranged in the base3220so that the center of mass of the storage unit300is located centrally, to provide a stable base for the storage unit300. It is appreciated that the center of mass can be based on the total weight of the storage unit300and system components before the cargo is loaded into the storage unit. For example, since the center of mass can be based on the total weight of the storage unit300, with most of the weight being provided by the base320, the center of mass can be located several inches, e.g., between 6 inches and 20 inches, above the base320along the central axis CA.

It is appreciated that the sensor384can be provided for measuring a weight and/or orientation associated with the storage unit300. The sensor384can be a pressure sensor or a load sensor or cell. The sensor384can be provided in one or more of the plurality of feet353of the base320. In another embodiment, the sensor384can be provided between the climate controlled space310and the base320to measure the weight of the cargo. In another embodiment, the storage unit300can include a plurality of sensors384provided at different locations or a combination of locations on the storage unit300. For example, the sensors can be provided on the plurality of feet353and in the slots or openings to determine whether the storage unit300is being lifted. It is appreciated that the disclosure of the placement of the sensor is not intended to be limiting, but rather provided to discuss some of the combinations of sensor arrangements on the storage unit300to provide different data for analysis and/or processing by the system controller385, as further discussed below.

It is appreciated that PCU300can include additional and/or alternative sensor(s) for measuring another condition (i.e., climate control and/or operating condition) of the storage unit300. In an embodiment, the storage unit300can be an accelerometer or inertial monitor for measuring an acceleration associated with the storage unit300and/or an inclinometer for measuring an inclination of the storage unit300. In another embodiment, the storage unit300can include a temperature sensor, humidity sensor, or the like for monitoring the environmental conditions of the climate controlled space310of the storage unit300, ambient environment of the storage unit300, or the like. In some embodiments, the storage unit300can include sensors such as location sensor (e.g., GPS sensor), radio transmitter, camera, light sensors, mechanical or virtual switches/sensors, or the like.

In view of such various arrangements of the sensor(s)384on the storage unit300, the sensor(s)384can acquire a reading or measurement for determining various conditions of the storage unit300. In an embodiment, the system controller385is configured to use the sensor384to determine or measure the entire weight of the storage unit300, the weight of the cargo product, the weight of various components of the storage unit300, or the like. For example, the system controller385can use the sensor384to acquire a reading or measurement for determining accurate and/or real-time weight information, including, but not limited to, self-calibration of tare weight which eliminates a separate weighing process, indication of whether the storage unit was ever double or triple stacked which could damage a storage unit, weight information of the cargo to verify with the shipment documentation and to support the ability for the carrier of the transport unit to accurately charge customers based on the tare or gross weight and verify against the bill of lading, which can be displayed on the storage unit or sent via telematics, a total weight of the storage unit, e.g., including cargo, so that proper handling equipment can be used for loading and unloading, or the like.

It is understood that the term telematics can be generally related to monitoring the storage unit using GPS technology or the like to track movement and/or providing communications with the user or customer via the Internet, cellular, or the like related to the shipping and/or handling of the storage unit.

In some embodiments, the shipping/handling information of the storage unit300can be transmitted to and/or displayed on the HMI395, for example, to indicate shipping information and/or handling requirements. The user interface of the display may show “Ready to ship” and/or shipping address, handling requirements, etc. In some embodiments, the HMI395may include a printer that receives the shipping/handling information of the storage unit300. The printer may receive the shipping/handling information upon a user input, for example, on the HMI395confirming the shipping/handling information. In some embodiments, the HMI395can communicate with a shipping system for data logging.

In an embodiment, if no weight is detected in the interior space315, the system controller385can instruct the climate control system383to automatically shut off. In another embodiment, if a weight is detected in the interior space315, an operating instruction can be executed, for example, to interrupt operating of a cleaning unit, e.g. an UV-C cleaning cycle.

In an embodiment, the sensor384can be used in conjunction with the second sensor384to provide sensor fusion, e.g., increased information based on sensor measurement of the two sensors. For example, the second sensor384can be an accelerometer, thermometer, such that based on the sensors384detecting a rapid change in weight reading and temperature reading. The system controller385can deduce an occupancy or a safety condition of the storage unit300based on the rapid change and for instructing an operation (e.g., turning on or off a cleaning unit) of the storage unit300to prevent or reduce damage to operators, cargo, the storage unit300itself, or the like.

In an embodiment, the sensor384can include visual or optical systems such as a camera, a light sensor, an IR sensor, or the like. A computer vision system can receive the measurement(s) acquired by the sensor384to determine a condition related to the storage unit300for instructing an operation (e.g., turning on or off a cleaning unit) of the storage unit300to prevent or reduce damage to operators, cargo, the storage unit300itself, or the like.

The cleaning unit325can include a UV-C source, for example, an UV-C light bulb, an UV-C light emitting light fixture, or the like. In some embodiments, the cleaning unit325can be a fluid cleaner that is configured to attach a cleaning fluid from a fluid source326to the cleaning unit325for cleaning the storage unit300. The fluid source326can provide a cleaning fluid. For example, the cleaning fluid can include pressurized gaseous or water, disinfecting/sterilizing gaseous (e.g., dry high temperature air, etc.), chemical or chemical cleaners, reactive oxygen species (e.g., singlet oxygen, ozone, atomic oxygen, Superoxide, hydrogen peroxide, hydroxyl radical, peroxynitrite, etc.), or the like. The fluid cleaner can include a hose327to distribute the cleaning fluid within the storage unit300.

It is appreciated that the cleaning unit325is not limited to equipment and structures installed in the storage unit300. For example, the cleaning unit325may be disposed on a removable/portable mechanical system325A to be carried into or out of the storage unit300, e.g., by an operator. As illustrated inFIG.4, the mechanical system325A is a stand.

In an embodiment, the cleaning unit325can be powered by the storage unit300and/or an external power source. For example, the cleaning unit325can be powered by the power source386, plugging into a power outlet, external battery, or the like. The cleaning unit325can be controlled, for example, by the system controller385and/or a controller in a remote system.

In an embodiment, the storage unit300can include one or more status indication lights340. The status indication light340can be configured to provide high visibility, e.g., having a brightness or luminosity that is discernible from any background, for the storage unit300. The status indication light40can include a plurality of light sources including, but not limited to, light-emitting diodes, gas discharge bulbs, graphene bulbs, or the like. In an embodiment, the controller385can turn on the status indication light340to indicate the position of the door337. For example, the controller385can turn on the status indication light340when the controller385determines the door337is opened.

FIG.5is a schematic diagram of the controller500, according to an embodiment.

As illustrated inFIG.5, the controller500is in communication with a cleaning unit510. In an embodiment, the controller500can be in communication with a HMI530, a power source540, a radio transceiver550, a telematics system560, or the like. The controller500, the cleaning unit510, the HMI530, and the power source540can be the system controller385, the HMI395, the power source386for the storage unit300respectively, as shown e.g., inFIGS.2-4. The radio transceiver550and the telematics system560can be integrated into the TU150and/or the storage unit300as shown, for example, inFIGS.2-4.

The controller500can be configured to control the cleaning unit510according to inputs and/or sensor measurements received by the controller500. The controller500can include a microprocessor configured to determine at least one instruction or output based on at least one received input (e.g., sensor measurements, etc.). The controller500can include a memory501for storing data, a clock502for recording time, a radio transceiver for communication via wireless radio wave, a port for wired communication, or the like. For example, the controller500can receive sensor measurement from a sensor, receive a user instruction of turning on the cleaning unit510, determine whether the storage unit (e.g., the storage unit300ofFIGS.1-4) is safe to clean, transmit an instruction to turn on the cleaning unit510, and/or the like. In some embodiments, the memory501can receive and store a database that records cleaning records generated and/or provided by the controller500. It is appreciated that a portion of the memory501can be located on the controller500, remotely from the HMI530and/or the like. Remote or partially remote memory can provide, for example, large storage space, allowing centralized processing, fleet manager oversights, securities, and/or the like.

The cleaning unit510can be any one or more of the cleaning units as shown and described above that is configured to clean the storage unit, e.g., by irradiation of the interior of the climate controlled space of the storage unit. It is appreciated that the cleaning unit510can include a dedicated controller and/or an integrated controller with the controller500of the storage unit.

A safety check520can be conducted to determine the storage unit being safe or unsafe to clean based on the reading or measurement received from the sensor(s). The safety check can be conducted by a controller module integrated in, or separated from, the controller500. As shown inFIG.5, the controller module conducting the safety check520can communicate with one or more occupancy sensors525for determining whether the storage unit is occupied and/or safe to clean. For example, the occupancy sensor525can include a door sensor527and/or a weight sensor529. A controller (e.g., controller500) can determine the occupancy of the storage unit and/or whether the storage unit is safe to clean. The controller500can turn on the cleaning unit510, for example, when the controller determines the storage unit is safe to clean based on the safety check520, the controller500receiving instructions (e.g., a user input, algorithmic input, etc. from the HMI530) to turn on the cleaning unit510, or the like, and/or a combination thereof.

It is appreciated that the occupancy sensors525are not limited to weight or door sensors (e.g.,527,529). For example, the occupancy sensors525can include other sensor that acquires and transmits sensor readings or measurements to a controller to determine or deduce whether the storage unit is occupied by a human user, other animals, or cargo. Examples of other sensors can include a motion sensor, temperature sensor (i.e., infrared thermometer, thermocouple, infrared camera, or the like), optical camera, etc.

The HMI530can be a user device in communication with the controller500. The HMI530can be disposed locally (e.g., onboard on the storage unit) and/or remotely (e.g., in the vehicle transporting the storage unit, at a remote fleet manager, etc.). The HMI530can be in communication with the controller500, for example, by transmitting and receiving instructions between the controller500and the HMI530. For example, the HMI530can transmit a user input535to the controller500, e.g., for turning on or off the cleaning unit510. In some embodiments, the HMI530can include a user interface536, for example, that can be configured to display an alert or messages transited by the controller500. In an embodiment, the user input535can be a switch or button indicating that the storage unit is safe to clean.

The power source540can provide power to the cleaning unit510. In an embodiment, the power source540can be a power source onboard the storage unit. In some embodiments, the power source540can be a power outlet coupled to the cleaning unit510to provide electrical power from an external power source (e.g., power supply from a warehouse, the TU transporting the storage unit, external battery, generator, or the like).

The radio transceiver550can be in communication with the controller, the sensor, the HMI, or the like, for sending and/or receiving sensor readings, instructions, user input, and/or the like. It is appreciated that the radio transceiver550can be a dedicated electronic device included in the storage unit, and/or otherwise integrated into the storage unit, for example, as part of the controller500, the telematics system560, and/or the like.

The telematics system560can include one or more systems that facilitate communications between the vehicle (e.g.,190ofFIG.1), one or more sensors of the vehicle, a TU, a storage unit, a controller, or the like. In some embodiments, other sensors or devices, such as GPS, cellular communication radio, memory, computational resources, database, etc. can be included in the telematics system560, for example, to provide useful information to the controller500. For example, the telematics system560can host a controller module to conduct the safety check520and output the determined safe or unsafe to clean to the controller500as an input to the controller500. For another example, the occupancy sensor525, the door sensor527, the weight sensor529, or the like, can be included in or be a part of, the telematics system560.

FIG.6shows a method600for cleaning a storage unit (e.g., the storage unit300shown inFIGS.2-4), according to an embodiment. The method600can be implemented by a controller. In some embodiments, the controller can be the controller500as shown inFIG.5and/or the system controller385shown inFIG.3.

As shown inFIG.6, a control method600can be implemented on the controller. The method600begins by the controller activating cleaning605, of example, as part of a starting up routine for the controller, as instructed by an algorithmic input or manual input from the user, or the like. The method600proceeds to620. In some embodiments the method can proceed to optional610, or to optional630. In an embodiment, the method600can proceed to optional610,620, and/or optional630in parallel.

At optional610, the controller can receive an instruction related to the cleaning unit. In an embodiment, the instruction can be a user input (e.g., user input535ofFIG.5) related to the cleaning unit (e.g., cleaning unit510ofFIG.5). If the user input instructs to turn on the cleaning unit, the method600proceeds to620. If the user input instructs to turn off the cleaning unit, the method can proceed to690.

It is appreciated that the user input can include a user generated input from a user interfere on an HMI for the storage unit, e.g., a button or switch. It is further appreciated that the user input can be alternatively or supplementally generated by a software implemented by a user (i.e., operator, engineer, fleet manager, or the like) automatically and/or algorithmically.

At620, the controller performs a safety check to determine a safety condition for cleaning the storage unit. If safety condition determines that the storage unit is safe to clean, the method600proceeds to640, optionally through630. If the safety condition determines that the storage unit is unsafe to clean and/or unable to determine whether the storage unit is safe to clean, the method600proceeds to690, optionally through625.

At optional630, the controller performs a running time check based on a clock (e.g., a timer, a real-time-clock module included in the controller500, the telematics560, the HMI530, or the like). The clock can provide an input related to time (e.g., a current time, an amount of time passages relative to a reference point in time, or the like) to the controller. The controller is configured to compare a running time to a threshold time value. The running time can be an amount of time of which the cleaning unit had been turned on. For example, the threshold time valve and/or the running time can be any number of seconds, minutes, hours, or the like.

If the controller determines that the running time of the cleaning unit has not exceeded the predetermined time value, the method600proceeds to640. If the controller determines that the running time has exceeded the predetermined time value, the method600proceeds to690, optionally through680. It is appreciated that, if the cleaning unit has been off, the running time determined by the controller may be zero, and the method600proceeds to640.

At640, the controller instructs the cleaning unit to turn on or remain turned on. In some embodiments, at640, the method includes keeping the door (e.g., door337ofFIG.4) locked while the cleaning unit being turned on. The method600then proceeds to620, optionally through610and/or630, for continued operation of the cleaning unit and/or monitoring of the storage unit.

At optional680, the controller records a completed cleaning cycle, e.g., in the database and/or transmits a notification to the user interface to alert a user that the cleaning has been completed. In an embodiment, the notification can be displayed, for example, on the user interface on the HMI. The notification can include displaying a message indicating that the cleaning has been completed. In an embodiment, the controller logs the completed cleaning cycle in a database, e.g., by providing an entry in the database a timing information, an information related to the cleaning has been completed, the threshold time value, and/or the like.

In some embodiments, at optional625, the controller optionally proceeds from620to provide a notification when instructing the cleaning unit to turn off (e.g., terminating a cleaning cycle) or remain turned off based on the controller determines that the storage unit being unsafe to clean at620. In an embodiment, the notification can be displayed, for example, on the user interface on the HMI. The notification can include displaying a message indicating that the storage unit is unsafe to clean, the cleaning cycle is terminated or interrupted due to the door being opened, and/or the like. In some embodiments, the notification at625can be recorded in the memory and or database accessible by the controller.

At690, the controller instructs the cleaning unit to turn off or remain turned off. In some embodiments, at690, the method includes unlocking the door (e.g., door337ofFIG.4). In an embodiment, the method600can proceed to620, optionally through610and/or630for continued operation of the cleaning unit.

It is appreciated that the order of610,620, and630are illustrative and not limiting, such that the method can proceed in other orders (e.g.,630,620, and610;620,610, and630; or the like). It is further appreciated that two or more of610,620, and630can be in series and/or in parallel such that, for example, when one or more of the user input being on at610, safety check at620, and the running time at630, the method600proceeds to640. In some embodiments, the method600can require that the user input being on at610, the controller determines that the storage unit is safe to clean based on the safety check at620, and the running time not exceeding the predetermined time threshold at630occur concurrently in order to proceed to640. In some embodiments, before the method600proceeds to640, additional method(s) may be included, for example, for checking power reserve, requesting approvals, etc.

In some embodiments, after the method proceed to640(e.g., turning on the cleaning unit), the method returns to620to monitor/determine, or continued to monitor/determine, whether the storage unit reminds safe to clean. For example, after the method600turning on the cleaning unit at640, a living object undetected previously may be disturbed by the cleaning unit being on and start moving inside the cleaning unit. Then, the living object becomes detectable, for example, by a motion sensor. The method600then determines that the storage unit is unsafe to clean at640and proceeds to690to terminate the cleaning cycle or turn off the cleaning unit. In another example, after the method600turning on the cleaning unit at640, the controller determines (e.g., via door sensor527ofFIG.5) that the door is opened, method600determines that the storage unit is unsafe to clean at640and proceeds to690to terminate the cleaning cycle and/or turn off the cleaning unit.

FIG.7shows a method700for determining whether the storage unit is safe to clean based on a safety check, according to an embodiment. In some embodiments, the safety check can be the safety check occurring at620inFIG.6.

The method700begins at620with the controller (e.g., the controller500shown inFIG.5and/or the system controller385shown inFIG.3) conducting a safety check (e.g., safety check at620inFIG.6). The method700then proceeds to one of optional730and optional740.

At optional730, the controller receives an input from a door sensor. The input from the door sensor can include a reading or measurement related to the position of a door (e.g., door337ofFIG.4). In an embodiment, the controller can be the same controller performing the method600ofFIG.6or another controller determining whether the storage unit is safe to clean and providing the determined information to the controller of method600ofFIG.6as an input. In an embodiment, if the controller receives a door sensor measurement and determines the door is closed, the controller may determine the storage unit is safe to clean and the method700can proceed to710, optionally through740. If the controller receives a door sensor measurement and determines the door is open (during or before the cleaning unit is turned on), the controller may determine the storage unit is, or become, unsafe to clean, and the method700proceeds to720.

At optional740, the controller receives an input from one or more weight sensors. The input from one or more weight sensors can include a reading or measurement related to the gross weight of the storage unit. The gross weight can be compared to a threshold weight value to determine or deduce the occupancy of the storage unit. The reading or measurement can be a weight of an object (e.g., cargo, human, or the like) inside PCU. If the controller determines the weight is above a threshold weight value based on the input from the weight sensor(s), the controller determines the storage unit is occupied and unsafe to clean. If the weight is below a threshold weight value, the controller determines the storage unit is empty, or sufficiently emptied, and is safe to clean.

If the controller determines that the storage unit is empty based on the input from one or more weight sensors, the method700proceeds to710. If the controller determines, based on the safety check, that the storage unit is occupied based on the input from one or more weight sensor, the controller determines the storage unit is unsafe to clean and the method700proceeds to720.

At720, upon the controller determine the storage unit is unsafe to clean (e.g., due to a determination that the door is open while the cleaning unit is turned on), the method proceeds to625and/or690to stop the cleaning unit and/or prevent the cleaning unit from being turned on.

It is appreciated that the order of the730and740is illustrative and not limiting, such that the method can proceed in other orders (e.g.,740and730). It is further appreciated that740and730can be in parallel such that, for example, when one or more of the storage unit is determined to be sufficiently empty at740and the door being closed at730, the method700may proceed to710.

At710, the controller determines that the storage unit is safe to clean. In some embodiments, the controller can provide a notification that the storage unit is safe to clean. In some embodiments, the notification can be displayed, for example, on the user interface on the HMI. The notification can include displaying a message indicating that the storage unit is safe to clean. In some embodiments, the notification can be recorded in the memory and or database accessible by the controller. In some embodiments, at710, the method includes locking the door (e.g., door337ofFIG.4) before proceeding to630or640, for example, to prevent unintentional opening of the door when the cleaning unit is on.

It is appreciated that the controller may be not limited to determine the storage unit is safe or unsafe to clean. For example, the controller can determine that the situation is unclear or undeterminable and/or trigging a notification to the user interface, e.g., due to sensor errors, battery errors, or the like.

It is further appreciated that controller may not be limited to the exemplary embodiments described above in determining the storage unit being safe or unsafe to clean based on the safety check. The controller can determine whether the storage unit being safe of unsafe to clean based on the type of cargo in the climate controlled space (e.g.,315ofFIG.4), the type of cleaning or cleaning unit, the area or space being cleaned, or the like. For example, the controller can determine the storage unit is safe to clean when the door is closed, while the cargo in the storage unit is a type of cargo that can sustain the cleaning method of the cleaning unit. It is further appreciated that the controller can determine the storage unit is safe to clean when the door is opened, for example, when the cleaning unit cleans by washing with water. For another example, the occupancy can be determined by other sensors such as optical, motion, or light sensors.

Aspects: Any of aspects 1-9 can be combined with any one of aspects 10-20.Aspect 1. A method for cleaning an electrically powered portable self-contained climate controlled storage unit, the method comprising:a sensor monitoring a safety condition of the electrically powered portable self-contained climate controlled storage unit;a controller receiving a reading related to the safety condition from the sensor;the controller performing a safety check based on the reading received from the sensor; andthe controller instructing the cleaning unit to clean the electrically powered portable self-contained climate controlled storage unit upon the controller determining the electrically powered portable self-contained climate controlled storage unit is safe to clean based on the safety check.Aspect 2. The method for cleaning the electrically powered portable self-contained climate controlled storage unit of aspect 1, further comprisingthe controller instructing the cleaning unit to stop cleaning the electrically powered portable self-contained climate controlled storage unit upon the controller determining the electrically powered portable self-contained climate controlled storage unit is unsafe to clean based on the safety check.Aspect 3. The method for cleaning the electrically powered portable self-contained climate controlled storage unit of aspect 1 or 2, further comprisingthe controller instructing to clean by turning on a UV-C source of the cleaning unit; andthe UV-C source emitting UV-C light in the climate controlled space upon the UV-C source being turned on.Aspect 4. The method for cleaning the electrically powered portable self-contained climate controlled storage unit of any one of aspects 1-3, further comprisingthe controller instructing to clean by turning on a fluid cleaner of the cleaning unit;the fluid cleaner receiving a cleaning fluid from a fluid source; andthe fluid cleaner spraying the cleaning fluid in the climate controlled space upon the fluid cleaner being turned on.Aspect 5. The method of cleaning the electrically powered portable self-contained climate controlled storage system of any one of aspects 1-4, further comprising:the controller monitoring a running time of the cleaning unit; andthe controller turning off the cleaning unit upon the controller determining that the running time exceeds a threshold time value.Aspect 6. The method of cleaning the electrically powered portable self-contained climate controlled storage system of any one of aspects 1-5, whereinthe sensor comprises a door sensor configured to provide the safety condition, andthe controller conducts the safety check to determine the electrically powered portable self-contained climate controlled storage system being unsafe to clean upon the controller determines the door is open based on the safety check.Aspect 7. The method of cleaning the electrically powered portable self-contained climate controlled storage system of any one of aspects 1-6, further comprising:the controller monitoring a running time; andthe controller sending a record of a completed cleaning cycle upon the controller determining that the running time exceeds a threshold time value.Aspect 8. The method of cleaning the electrically powered portable self-contained climate controlled storage system of any one of aspects 1-7, whereinthe sensor comprises a weight sensor configured to provide the safety condition, andthe controller conducts the safety check to determine the electrically powered portable self-contained climate controlled storage system being unsafe to clean upon the controller determining the container exceeding a threshold weight value based on the safety check.Aspect 9. The method of cleaning the electrically powered portable self-contained climate controlled storage system of any one of aspects 1-8, further comprising:the controller monitoring a running time of the cleaning unit; andthe controller sending an alert of a completed cleaning cycle to a user interface upon the controller determining that the running time exceeds a threshold time value.Aspect 10. An electrically powered portable self-contained climate controlled storage system comprising:an electrically powered portable self-contained climate controlled storage unit that comprises: a base supporting a climate controlled space, a climate control system configured to provide climate control to the climate controlled space, a door for provide access to the climate controlled space;a sensor configured to provide a reading related a safety condition of the electrically powered portable self-contained climate controlled storage unit; anda controller configured to:receive the reading from the sensor,performing a safety check based on the reading received from the sensor, andinstruct a cleaning unit to clean the electrically powered portable self-contained climate controlled storage unit upon the controller determining the electrically powered portable self-contained climate controlled storage unit is safe to clean based on the safety check.Aspect 11. The electrically powered portable self-contained climate controlled storage system of any one of aspect 10, further comprisingthe controller instructing the cleaning unit to stop cleaning the electrically powered portable self-contained climate controlled storage unit upon the controller determining the electrically powered portable self-contained climate controlled storage unit is unsafe to clean based on the safety check.Aspect 12. The electrically powered portable self-contained climate controlled storage system of aspect 10 or 11, wherein the cleaning unit comprisesa UV-C source disposed in the electrically powered portable self-contained climate controlled storage unit and configured to irradiate in the electrically powered portable self-contained climate controlled storage unit to clean the climate controlled space with UV-C light.Aspect 13. The electrically powered portable self-contained climate controlled storage system of any one of aspects 10-12, whereinthe cleaning unit comprises a fluid cleaner disposed on the container and configured toconnect to a fluid source,receive a cleaning fluid from the fluid source, andclean inside of the electrically powered portable self-contained climate controlled storage unit by spraying the climate controlled space with the cleaning fluid upon instructed by the controller.Aspect 14. The electrically powered portable self-contained climate controlled storage system of any one of aspects 10-13, whereinthe sensor comprises a door sensor configured to provide the reading related to the safety condition based on a position of the door.Aspect 15. The electrically powered portable self-contained climate controlled storage system of any one of aspects 10-14, whereinthe sensor comprises a weight sensor configured to provide the reading related to the safety condition related to a weight of the electrically powered portable self-contained climate controlled storage unit.Aspect 16. The electrically powered portable self-contained climate controlled storage system of any one of aspects 10-15, whereinthe electrically powered portable self-contained climate controlled storage unit contains a battery that provides electricity to the cleaning unit.Aspect 17. The electrically powered portable self-contained climate controlled storage system of any one of aspects 10-16, whereinthe cleaning unit is disposed on a stand removable from the electrically powered portable self-contained climate controlled storage unit, and the stand supports the cleaning unit.Aspect 18. The electrically powered portable self-contained climate controlled storage system of any one of aspects 10-17, whereinthe cleaning unit includes a fluid cleaner including a hose configured to distribute a cleaning fluid for cleaning the electrically powered portable self-contained climate controlled storage.Aspect 19. The electrically powered portable self-contained climate controlled storage system of any one of aspects 10-18, whereinthe cleaning unit is disposed in the electrically powered portable self-contained climate controlled storage.Aspect 20. The electrically powered portable self-contained climate controlled storage system of any one of aspect 10-19, whereinthe cleaning unit is disposed in a transport unit that is configured to transport the electrically powered portable self-contained climate controlled storage unit.