Patent Description:
Recently, as interest in eco-friendly means of transportation increases, mobility that can move based on eco-friendly power is attracting attention.

Mobility is a means of transportation that makes the movement of people and things more convenient, and it is satisfying a movement situation that requires a lot of time and effort even for a short distance. Mobility may include an electric scooter, an electric bicycle, an electric skateboard, or an electric scooter.

Such mobility may establish communication with a nearby charging station to receive wireless power from the charging station. For example, for wireless charging, the mobility may communicate with the charging station through a wireless data link using short-range communication (e.g., Wi-Fi). After the mobility identifies a charging station through a "pairing" process, wireless charging may be performed by receiving wireless power from the charging station.

However, if a plurality of mobilities are simultaneously wirelessly charged by parking in one charging station equipped with a plurality of docks, due to simultaneous wireless charging of the plurality of mobilities, charging overload may occur in the charging station.

Accordingly, even when a plurality of mobility devices are simultaneously wirelessly charged through one charging station, there is a need for a technology for managing simultaneous wireless charging without overloading the charging station.

<CIT> discloses a case for an electronic device, the case including a battery, an interface to receive electrical power from an external power source, a payment device reader, a product information input device, and a computer processor configured to execute computer-readable instructions. The computer processor executes the instructions to conduct communications with the electronic device, limit an amount of current of the received electrical power consumed by the case, allocate the amount of current among the battery and the electronic device based on the communications, read product information from a product using the product information input device, and read a payment device using the payment device reader, where the payment device is used to pay for the product.

<CIT> discloses a vehicle management system for external charging of a plurality of vehicles.

The present invention was invented in view of the above background, and it is one object of the invention to provide a charging management apparatus and a charging management method in which the charging load of the charging station for each mobility can be appropriately adjusted if a large number of mobilities are wirelessly charged at the same time in one charging station.

To this end, the present invention provides a charging management apparatus in accordance with claim <NUM>, a method in accordance with claim <NUM>, and a computer-readable recording medium in accordance with claim <NUM>.

In accordance with the present invention, there is provided a charging management apparatus. The charging management apparatus comprises: a charging station including a plurality of charging docks capable of loading a plurality of charging objects; a power supply configured to supply power for wireless charging to the plurality of charging docks in order to wirelessly charge the plurality of charging objects loaded in the charging station; and a controller configured to determine which charging mode to charge the plurality of charging objects among a constant current mode and a constant voltage mode based on a charging dock ratio in which wireless charging is being performed, and configured to control the power supply to charge the plurality of charging objects in the determined charging mode, when the power for wireless charging is supplied to the plurality of charging docks. The charging dock ratio is a ratio of a number of charging docks in which the plurality of charging objects are loaded and wireless charging is being performed to a total number of the plurality of charging docks.

According to the invention, the controller is configured to control that a voltage lower than a preset voltage of the constant voltage mode is applied to a charging dock being charged in the constant voltage mode among the plurality of charging docks, and to control a current to be maintained as it is with respect to a charging dock being charged in the constant current mode among the plurality of charging docks, when the charging dock ratio is equal to or greater than a preset first set ratio.

The charging management apparatus further may comprise an information input/output device through which a user inputs information necessary for charging the plurality of charging obj ects.

The controller may be configured to calculate the charging dock ratio, based on the information of the plurality of charging objects which is inputted through the information input/output device.

The charging management apparatus further comprises a transmitting module configured to transmit a signal for wireless connection with a receiving module of the plurality of charging objects to the receiving module.

The controller may be configured to stop the supply of the power for wireless charging to the charging dock being charged in the constant voltage mode among the plurality of charging docks, and to control the current to be maintained as it is for the charging dock being charged in the constant current mode among the plurality of charging docks, when the charging dock ratio is greater than or equal to a second set ratio higher than the first set ratio.

The controller may be configured to stop the supply of the power for wireless charging to the charging dock being charged in the constant voltage mode among the plurality of charging docks, and to control a current lower than the preset current of the constant current mode to be applied to the charging dock being charged in the constant current mode among the plurality of charging docks, when the charging dock ratio is greater than or equal to a third set ratio higher than the second set ratio.

Each of the plurality of charging objects may be a mobility device including a mobile means having a built-in battery capable of wireless charging.

In accordance with the present invention, there is provided a charging management method of a wireless charging apparatus, the method comprises: transmitting signals to a plurality of charging objects; if a wireless connection is made between the plurality of charging objects and a charging station, wirelessly transmitting power for wireless charging to the plurality of charging objects; calculating a charging dock ratio, which is a ratio of a number of charging docks in which the plurality of charging objects are loaded and wireless charging is being performed to a total number of the plurality of charging docks; and determining which charging mode to charge the plurality of charging objects among a constant current mode and a constant voltage mode based on the charging dock ratio in which wireless charging is being performed and controlling a power supply to charge the plurality of charging objects in the determined charging mode, when power for wireless charging is supplied to the plurality of charging docks.

The controlling the power supply to charge the plurality of charging objects in the determined charging mode comprises: applying a voltage lower than a preset voltage of the constant voltage mode to a charging dock being charged in the constant voltage mode among the plurality of charging dock, and maintaining a current as it is with respect to a charging dock being charged in the constant current mode among the plurality of charging docks, when the charging dock ratio is equal to or greater than a preset first set ratio.

The controlling the power supply to charge the plurality of charging objects in the determined charging mode may comprise: stopping the supply of the power for wireless charging to the charging dock being charged in the constant voltage mode among the plurality of charging docks, and maintaining the current as it is for the charging dock being charged in the constant current mode among the plurality of charging docks, when the charging dock ratio is greater than or equal to a second set ratio higher than the first set ratio.

The controlling the power supply to charge the plurality of charging objects in the determined charging mode may comprise: stopping the supply of the power for wireless charging to the charging dock being charged in the constant voltage mode among the plurality of charging docks, and applying a current lower than the preset current of the constant current mode to the charging dock being charged in the constant current mode among the plurality of charging docks, when the charging dock ratio is greater than or equal to a third set ratio higher than the second set ratio.

The calculating of the charging dock ratio comprises: checking the number of charging docks in which the plurality of charging objects are loaded and wireless charging is being performed; and calculating the charging dock ratio representing the ratio of the number of charging docks in which the wireless charging is being performed among the total number of the plurality of charging docks.

In accordance with the present invention, there is provided a computer-readable recording medium storing a computer program, comprising commands for a processor to perform a method, the method comprises: transmitting signals to a plurality of charging objects; if a wireless connection is made between the plurality of charging objects and a charging station, controlling the charging station to wirelessly transmit power for wireless charging to the plurality of charging objects; calculating a charging dock ratio, which is a ratio of a number of charging docks in which the plurality of charging objects are loaded and wireless charging is being performed to a total number of the plurality of charging docks; and determining which charging mode to charge the plurality of charging objects among a constant current mode and a constant voltage mode based on the charging dock ratio in which wireless charging is being performed and controlling a power supply to charge the plurality of charging objects in the determined charging mode, when power for wireless charging is supplied to the plurality of charging docks.

According to the present invention, when a plurality of mobility devices are parked in one charging station and wirelessly charged at the same time, the constant current mode or the constant voltage mode is adjusted based on the charging dock ratio of the charging station in which wireless power transmission is performed, thereby having an effect that it is possible to implement effective wireless charging without charging overload.

The advantages and features of the embodiments and the methods of accomplishing the embodiments will be clearly understood from the following description taken in conjunction with the accompanying drawings. However, embodiments are not limited to those embodiments described, as embodiments may be implemented in various forms. It should be noted that the present embodiments are provided to make a full disclosure and also to allow those skilled in the art to know the full range of the embodiments.

Terms used in the present specification will be briefly described, and the present invention will be described in detail.

In terms used in the present invention, general terms currently as widely used as possible while considering functions in the present invention are used. However, the terms may vary according to the intention or precedent of a technician working in the field, the emergence of new technologies, and the like. In addition, in certain cases, there are terms arbitrarily selected by the applicant, and in this case, the meaning of the terms will be described in detail in the description of the corresponding invention. Therefore, the terms used in the present invention should be defined based on the meaning of the terms and the overall contents of the present invention, not just the name of the terms.

When it is described that a part in the overall specification "includes" a certain component, this means that other components may be further included instead of excluding other components unless specifically stated to the contrary.

In addition, a term such as a "unit" or a "portion" used in the specification means a software component or a hardware component such as FPGA or ASIC, and the "unit" or the "portion" performs a certain role. However, the "unit" or the "portion" is not limited to software or hardware. The "portion" or the "unit" may be configured to be in an addressable storage medium, or may be configured to reproduce one or more processors. Thus, as an example, the "unit" or the "portion" includes components (such as software components, object-oriented software components, class components, and task components), processes, functions, properties, procedures, subroutines, segments of program code, drivers, firmware, microcode, circuits, data, database, data structures, tables, arrays, and variables. The functions provided in the components and "unit" may be combined into a smaller number of components and "units" or may be further divided into additional components and "units".

Hereinafter, the embodiment of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art may easily implement the present invention. In the drawings, portions not related to the description are omitted in order to clearly describe the present invention.

Hereinafter, a detailed configuration of the charging management system according to an embodiment of the present invention will be described with reference to the drawings.

<FIG> is a block diagram showing a charging management system according to an embodiment of the present invention.

The charging management system <NUM> according to the embodiment of the present invention simultaneously wirelessly charges a plurality of mobilities at a charging station. The charging management system <NUM> adjusts a charging load for each mobility according to a charging dock ratio of the charging station, so that the plurality of mobilities can be managed to implement effective simultaneous wireless charging in one charging station without charging overload.

Here, the mobility <NUM> may be a mobile means in which a battery capable of wireless charging is built-in. In this embodiment, although the mobility <NUM> is described as an electric kickboard, the mobility <NUM> may include various types of transport means in addition to the electric kickboard. For example, the mobility may be an electric bicycle, an electric skateboard, an electric scooter, or an electric vehicle.

The mobility <NUM> may provide an alarm function to the user's mobile device (e.g., a mobile phone) or may inform the user of low battery status through a display provided in the mobility, when charging is required, for example, when the battery capacity of the mobility is <NUM>% or less. In this case, the mobility may provide a navigation function for guiding the shortest route to the point where the charging station is located.

Hereinafter, the charging station according to the embodiment of the present invention will be described in detail.

Referring to <FIG>, the charging station <NUM> receives power from the power supply <NUM> to wirelessly charge the mobility <NUM>. The charging management system <NUM> includes a charging station <NUM>, a controller <NUM>, a power supply <NUM> and a communicator (not shown), and the mobility <NUM> may include a receiving coil <NUM>, a battery circuitally connected with the receiving coil <NUM>, and a mobility communication module capable of communicating with the communicator of the charging management system <NUM>.

The charging station <NUM> may include a station body <NUM>, a charging dock <NUM>, and a transmission module <NUM>.

According to the invention, the station body <NUM> includes a plurality of charging docks <NUM> that may be spaced apart from each other in the longitudinal direction. In the drawing according to the present embodiment, the plurality of charging docks <NUM> are disposed to be spaced apart from each other in the longitudinal direction on the station body <NUM>, but the present invention is not limited thereto. The arrangement structure of the charging dock <NUM> with respect to the station body <NUM> may be changed to an optimal arrangement form in which parking and wireless charging of the mobility <NUM> can be efficiently implemented.

The charging dock <NUM> may be understood as a concept of a space in which the mobility <NUM> can park. Since a plurality of charging docks <NUM> are provided in the station body <NUM>, a plurality of mobilities <NUM> may be respectively parked in the plurality of charging docks <NUM>. If the mobility <NUM> is positioned adjacent to the charging dock <NUM> of the charging station <NUM>, a predetermined transmission voltage Vout and a transmission current Iout are applied at the charging station through the transmission module <NUM>, thereby power may be transmitted to the mobility <NUM>.

The transmission module <NUM> is provided in the charging dock <NUM> to generate an electromagnetic field, so that the mobility <NUM> in the parking state can be wirelessly charged. To this end, the transmission module <NUM> may include a wireless charging coil (primary coil) that receives power from the power supply <NUM> to generate an electromagnetic field, and a charging pad that covers the wireless charging coil.

The transmission module <NUM> may be in plural number (e.g., the first transmission module <NUM>, the second transmission module <NUM>, and the third transmission module <NUM>) capable of wirelessly charging the mobility <NUM> in the parking state. In a state in which the mobility <NUM> is parked in the charging dock <NUM>, if power is supplied to the wireless charging coil from the power supply <NUM>, an electromagnetic induction by an electromagnetic field is generated in the wireless charging coil, and the power receiver (secondary coil) of the mobility <NUM> may charge the battery of the mobility <NUM> using an induced current generated by the electromagnetic induction.

The transmission module <NUM> may be provided in the charging dock <NUM>, and may transmit power to the receiving coil <NUM> of the mobility <NUM> by applying a predetermined voltage Vout and a predetermined current Iout to the charging dock. When the mobility <NUM> is not parked in the charging dock <NUM>, the voltage Vout and the current Iout in the transmission module <NUM> may be <NUM>, respectively.

In this embodiment, the transmission module <NUM> has been described as consisting of a wireless charging coil and a charging pad, but the main configuration of the transmission module <NUM> is not limited to the wireless charging coil and the charging pad, and the transmission module <NUM> may further include other components necessary for efficient wireless charging along with stable parking of the mobility <NUM>.

In addition, the mobility <NUM> may figure out a charging dock <NUM> that is chargeable from among the plurality of charging docks <NUM> of the charging station <NUM> using short-range wireless communication (e.g., Bluetooth pairing) or GPS (Global Positioning System).

In addition, when all of the plurality of charging docks <NUM> provided in the charging station <NUM> are wirelessly charging, the mobility <NUM> may determine the charging completion time (expected standby time) of the mobility <NUM> being charged in each charging dock <NUM>, through a short-range wireless communication with the charging station <NUM>. In addition, assuming that the mobility <NUM> is charged in the charging dock <NUM>, the mobility <NUM> may determine in advance the expected charging completion time through the corresponding charging dock <NUM>.

The mobility <NUM> may receive wireless power from the charging station <NUM>. For example, when the mobility <NUM> is docked in the charging dock <NUM> of the charging station <NUM>, and the mobility <NUM> and the charging dock <NUM> are disposed to face each other, the wireless charging coil (primary coil) of the charging dock <NUM> may wirelessly transmit electrical energy by electromagnetic induction with the power receiver (secondary coil) of the mobility <NUM>. The electric energy received by the mobility <NUM> may be used to charge the battery of the mobility <NUM>.

When wireless power transmission is performed between the plurality of mobilities <NUM> and the charging dock <NUM>, the controller <NUM> calculates a charging dock ratio of the charging station <NUM> in which wireless power transmission is performed.

Here, the 'charging dock ratio' is understood as a ratio in which a plurality of mobilities <NUM> are parked among the plurality of charging docks <NUM> to perform wireless power transmission, that is, a ratio of the plurality of mobilities in which wireless power transmission is performed with respect to the plurality of charging docks <NUM>. For example, if seven mobilities <NUM> are parked and wireless power is transmitted in the charging station <NUM> provided with ten charging docks <NUM>, the charging dock ratio would be <NUM>%.

Also, the charging station <NUM> may include an information input/output device that displays information on whether the mobility <NUM> is parked in the charging station <NUM> among the plurality of charging docks <NUM>. Such an information input/output device may be understood as a terminal into which information necessary for charging the mobility <NUM> may be input by a user. For example, the information input/output device may be a touch display terminal. If all of the plurality of charging docks are charging, the expected charging completion time of the mobility <NUM> for each charging dock <NUM> may be displayed on the information input/output device.

However, the present invention is not necessarily limited thereto, and the user may provide information necessary for charging the mobility <NUM> to the charging station <NUM> using the provided application that can be installed in a terminal such as a mobile phone as well as the above-described information input/output device.

The controller <NUM> controls the power supply <NUM> so that the transmission module <NUM> wirelessly charges the mobility <NUM> in a constant current mode or a constant voltage mode. The constant current mode may be understood as a mode in which electric energy of a constant current is applied to the transmission module <NUM> regardless of time. In the constant current mode, the current is constant, but as the amount of charge (charge time) of the battery increases, the voltage flowing through the wireless charging coil may increase. The controller <NUM> may obtain information on how much the battery of the mobility <NUM> is charged by communicating with the mobility communication module through the communicator, and may control the transmission module <NUM> to charge in a constant current mode if the charge amount of the battery is equal to or less than a first reference, and to charge in a constant voltage mode if the charge amount of the battery is greater than a second reference.

In the drawings according to the present embodiment, the first reference and the second reference are shown to be the same, but the disclosure is not limited thereto, and thus the second reference may be greater than the first reference. In case that the second reference is greater than the first reference, if the charging amount of the battery is between the first reference and the second reference, it may be controlled so that the current decreases in proportion to the current in the constant current mode and the voltage increases in proportion to the voltage in the first reference as the amount of charge is greater than that of the first reference. The current at which the amount of charge increases proportionally between the first reference and the second reference may be gradually decreased to the current at the second reference, and the voltage at which the amount of charge increases proportionally between the first reference and the second reference may be gradually increased up to the voltage at the second reference (the voltage in the constant voltage mode).

If the number of charging stations <NUM> being charged in the plurality of charging stations <NUM> is relatively small, the controller <NUM> applies electrical energy to the transmission module <NUM> in a constant current mode with a constant current at a normal current value, and if there are relatively many charging stations <NUM> being charged, the current power supply <NUM> may be controlled so that the electric energy is applied to the transmission module <NUM> in a constant current mode in which the current is constant at a reduced current value. The reduced current value may be a single value, but a plurality of values may also be input.

The constant voltage mode may be understood as a mode in which electric energy of a constant voltage is applied to the transmission module <NUM> regardless of time. In the constant voltage mode, the voltage is constant, but as the amount of charge (charging time) of the battery increases, the current flowing through the wireless charging coil may decrease. In addition, if the number of charging stations <NUM> being charged among the plurality of charging stations <NUM> is relatively small, the controller <NUM> applies electrical energy to the transmission module <NUM> in a constant voltage mode with a constant voltage at a normal voltage value, and if there are relatively many charging stations <NUM> being charged, the power supply <NUM> may be controlled so that the electric energy is applied to the transmission module <NUM> in a constant voltage mode with a constant voltage at a reduced voltage value. The reduced voltage value may be a single value, but a plurality of values may also be input.

In addition, the controller <NUM> may control the power supply <NUM> such that as the number of the charging docks <NUM> in which the mobility <NUM> is parked increases among the plurality of charging docks <NUM>, the voltage output Vout and the current output Iout of the transmission module <NUM> provided in each charging dock <NUM> decrease.

Since the controller <NUM> can control whether the transmission module <NUM> transmits power, it is also possible to determine the number of the transmission modules <NUM> that transmit power to the mobility <NUM> among the transmission modules <NUM> provided in the plurality of charging docks <NUM>. In other words, the controller <NUM> may calculate the ratio of the charging docks being charged among all the charging docks <NUM> based on the information required for charging the mobility <NUM> input to the information input/output device, and it is possible to determine which mode of the charging dock <NUM> to charge in the constant current mode or in the constant voltage mode using the calculated charging dock ratio.

The controller <NUM> controls the current and the voltage applied to the transmission module <NUM> according to the ratio of the charging docks being charged among all the charging docks <NUM>. For example, if the number of charging stations <NUM> being charged in the mobility <NUM> among the plurality of charging stations <NUM> is relatively small, the charging speed may be accelerated by applying a large amount of electrical energy to all or some of the transmission modules <NUM> among the plurality of transmission modules <NUM>, and if the number of charging stations <NUM> being charged in the mobility <NUM> among the plurality of charging stations <NUM> is relatively large, by applying a small amount of electrical energy to all or some of the transmission modules <NUM> among the plurality of transmission modules <NUM>, it is possible to lower the overall electrical load of the charge management system <NUM> instead of slowing the charging speed.

For example, when there are many transmission modules <NUM> being charged, the controller <NUM> may control the charging speed of all the mobilities <NUM> parked in the charging docks <NUM> by performing a control to allow a constant current to flow at a first reduced current value to the transmission module <NUM> placed in the constant current mode, and a control to allow a constant voltage to be applied at a first reduced voltage value to the transmission module <NUM> placed in the constant voltage mode, selectively or in parallel. Accordingly, the controller <NUM> may allow the mobility <NUM> that is relatively low-charged to be charged quickly, and the mobility <NUM> that is relatively high-charged may be charged slowly.

As a more detailed example which is not covered by the appended claims, when a first restriction condition is input to the controller <NUM> in advance, and the first restriction condition is that the charging dock ratio is greater than a preset first set ratio (for example, <NUM>%), if the first restriction condition is not satisfied (that is, when the charging dock ratio is less than or equal to the first set ratio), the controller <NUM> may charge all the mobilities <NUM> parked in the charging docks <NUM> at a high speed by flowing a constant current of a normal current value to the transmission module <NUM> placed in the constant current mode and by applying a constant voltage at a normal voltage value to the transmission module <NUM> placed in the constant voltage mode.

In addition, if the first restriction condition is satisfied (that is, when the charging dock ratio is greater than the first set ratio), the controller <NUM> may charge the mobility <NUM> in which the charging amount of the battery is less than or equal to the first reference with the first reduced current value in the constant current mode, and may charge the mobility <NUM> in which the charging amount of the battery is greater than the second reference with the normal voltage value in the constant voltage mode.

In addition, a second restriction condition may be input to the controller <NUM> in advance. When the second restriction condition is that the charging dock ratio is greater than the second set ratio (for example, <NUM>%) set to be larger than the first set ratio, if the second restriction condition is satisfied (that is, the charging dock ratio is greater than the second set ratio), the controller <NUM> may charge the mobility <NUM> in which the charging amount is equal to or less than the first reference in the constant current mode with the second reduced current value set to be smaller than the first reduced current value, and may charge the mobility <NUM> in which the charging amount is greater than the second reference in the constant voltage mode with the first reduced voltage value. If the second restriction condition is set, the first restriction condition is changed that the charging dock ratio is greater than the preset first set ratio and is less than or equal to the second set ratio.

In addition, the third restriction condition may be further input to the controller <NUM> in advance. When the third restriction condition is that the charging dock ratio is greater than the third set ratio (e.g., <NUM>%) set to be larger than the second set ratio, if the third restriction condition is satisfied (that is, the charging dock ratio is greater than the third set ratio), the controller <NUM> may charge the mobility <NUM> in which the charging amount of the battery is less than or equal to the first reference in the constant current mode with the third reduced current value set to be smaller than the second reduced current value, and may charge the mobility <NUM> in which the charging amount of the battery is greater than the second reference in the constant voltage mode with a second reduced voltage value set to be smaller than the first reduced voltage value. The above given examples are not covered by the appended claims.

On the other hand, in the above embodiment, it has been described that the controller <NUM> controls the current and voltage applied to the transmission module <NUM> according to the ratio of the charging docks being charged among all the charging docks <NUM>. As another example, which is not covered by the claimed invention, the controller <NUM> may control the current and voltage applied to the transmission module <NUM> based on the electrical energy applied to the entire charging docks <NUM>. In this case, the first restriction condition described above may be changed to be that the electrical energy used in the entire plurality of charging docks <NUM> is greater than a first threshold value, and the second and third restriction conditions may be changed to be that the electrical energy used in the entire plurality of charging docks <NUM> is greater than a second and a third threshold values.

The controller <NUM> may be implemented by a computing device including a microprocessor, and since the implementation method is obvious to those skilled in the art, further detailed description will be omitted. Further, the controller <NUM> may be provided inside the charging station <NUM>, but the present invention is not necessarily limited thereto, and the controller <NUM> may be provided separately from the charging station to remotely control the charging station from the outside.

Hereinafter, a charging management method of the charging management system according to the embodiment of the present invention will be described.

<FIG> is a flowchart illustrating the charging management method of the charging management system according to the embodiment of the present invention.

Referring to <FIG>, the charging management method of the charging management system includes transmitting a signal to a plurality of mobilities (S100), wirelessly transmitting power to the mobilities (S200), calculating the charging dock ratio of the charging station (S300), and determining a constant current mode or a constant voltage mode (S400).

In step S <NUM> of transmitting the signal to the plurality of mobilities, the transmission module of the charging station may transmit the signal to the plurality of mobilities. The signal transmitted from the transmission module may be at least one of a voltage output Vout or a current output Iout.

The transmission value of the voltage output Vout or the current output Iout transmitted from the transmission module of the charging dock in which the mobility is not parked may be <NUM>, respectively. In addition, as the number of charging docks in which the mobility is parked increases, the transmission value of the voltage output Vout or the current output Iout transmitted from the transmission module of the charging station may be increased.

In addition, when the transmission value of the voltage output Vout or current output Iout transmitted from the transmission module is relatively larger than the transmission value of the voltage output Vout or current output Iout of another charging station, the charging station with a relatively large transmission value of the voltage output Vout or the current output Iout may be the charging station with relatively more charging docks in which the mobility is not parked (the charging station having relatively more charging docks capable of wireless charging for the mobility <NUM>). Accordingly, the mobility may select a charging station having a larger transmission value of the voltage output Vout or the current output Iout after comparing the transmission values of the voltage output or the current output transmitted from the transmission module.

Thereafter, among the plurality of charging docks, whether the mobility <NUM> is parked may be checked through an information input/output device in which information required for charging the mobility is input by the user.

In the step of wirelessly transmitting power to the mobility (S200), if the mobility is parked in the charging station, a wireless connection may be made between the charging station and the plurality of mobilities. If the wireless communication link between the charging station and the mobility is completed, wireless power may be transmitted between the mobility and the charging station.

In the step of calculating the charging dock ratio of the charging station (S300), while the wireless power is transmitted between the mobility and the charging station, the charging dock ratio of the charging station in which the wireless power transmission is performed is calculated. The charging dock ratio is understood as a ratio in which a plurality of mobilities are parked among a plurality of charging docks to perform the wireless power transmission.

In the step of determining the constant current mode or the constant voltage mode (S400), the controller <NUM> determines whether to charge in the constant current mode or the constant voltage mode of the charging station based on the calculated charging dock ratio.

The following described implementations are not covered by the appended claims, in the step of adjusting the constant current mode or the constant voltage mode (S400), if the charging dock ratio is greater than a preset first set ratio (for example, <NUM>%), the controller <NUM> applies a current having a first reduced current value to the charging dock being charged in the constant mode among the plurality of charging docks, and applies a voltage having a normal voltage value to the charging dock being charged in the constant voltage mode. In addition, if it is greater than a second set ratio (for example, <NUM>%) set larger than the first set ratio, the controller <NUM> applies a current of a second reduced current value to the charging dock being charged in the constant current mode among the plurality of charging docks, and applies a voltage of a first reduced voltage value to the charging dock being charged in the constant voltage mode. In addition, if the charging dock ratio is greater than a third set ratio (e.g., <NUM>%) higher than the second set ratio, the controller <NUM> may apply a current of a third reduced current value to the charging dock being charged in the constant current mode among the plurality of charging docks, and may apply a voltage of a second reduced voltage value to the charging dock being charged in the constant voltage mode.

In the present invention, when a plurality of mobilities are parked in one charging station and wirelessly charged, a constant current mode or a constant voltage mode is selected and charged based on the charging dock ratio of the charging station in which wireless power transmission is performed, thereby it is possible to provide an excellent advantage of implementing effective wireless charging.

Combinations of steps in each flowchart attached to the present invention are executed by computer program instructions. Since the computer program instructions can be mounted on a processor of a general-purpose computer, a special purpose computer, or other programmable data processing equipment, the instructions executed by the processor of the computer or other programmable data processing equipment create a means for performing the functions described in each step of the flowchart. The computer program instructions are also stored on a computer-usable or computer-readable storage medium which can be directed to a computer or other programmable data processing equipment to implement a function in a specific manner. Accordingly, the instructions stored on the computer-usable or computer-readable recording medium can also produce an article of manufacture containing an instruction means which performs the functions described in each step of the flowchart. The computer program instructions can also be mounted on a computer or other programmable data processing equipment. Accordingly, a series of operational steps are performed on a computer or other programmable data processing equipment to create a computer-executable process, and it is also possible for instructions to perform a computer or other programmable data processing equipment to provide steps for performing the functions described in each step of the flowchart.

In addition, each step may represent a module, a segment, or a portion of codes which contains one or more executable instructions for executing the specified logical function(s). It should also be noted that in some alternative embodiments, not covered by the appended claims, the functions mentioned in the steps may occur out of order. For example, two steps illustrated in succession may in fact be performed substantially simultaneously, or the steps may sometimes be performed in a reverse order depending on the corresponding function.

Claim 1:
A charging management apparatus, comprising:
a charging station (<NUM>) including a plurality of charging docks (<NUM>) which are configured to load a plurality of charging objects;
a power supply (<NUM>) configured to supply power for wireless charging to the plurality of charging docks (<NUM>) in order to wirelessly charge the plurality of charging objects loaded in the charging station (<NUM>); and
a controller (<NUM>) configured to determine which charging mode to charge the plurality of charging objects among a constant current mode and a constant voltage mode based on a charging dock ratio in which wireless charging is being performed, and configured to control the power supply (<NUM>) to charge the plurality of charging objects in the determined charging mode, when the power for wireless charging is supplied to the plurality of charging docks (<NUM>),
wherein the charging dock ratio is a ratio of a number of charging docks (<NUM>) in which the plurality of charging objects are loaded and wireless charging is being performed to a total number of the plurality of charging docks (<NUM>),
characterized in that
the controller (<NUM>) is configured to control that a voltage lower than a preset voltage of the constant voltage mode is applied to a charging dock (<NUM>) being charged in the constant voltage mode among the plurality of charging docks (<NUM>), and to control a current to be maintained as it is with respect to a charging dock (<NUM>) being charged in the constant current mode among the plurality of charging docks (<NUM>), when the charging dock ratio is equal to or greater than a preset first set ratio.