Abstract:
Disclosed herein is an integrated direct-current based uninterrupted power supply system connected to an AC power input and a server or a computer, comprising: an AC adapter/charger unit for providing power the system and charging an energy storage unit; the energy store unit for monitoring, controlling and powering the system, and communicating the powering &amp; battery capacity status with the server or computer, and a DC-to-DC converter circuit for providing multiple DC voltage rails.

Description:
CROSS REFERENCE TO RELATED APPLICATION 
       [0001]    The present application claims benefit of priority under 35 U.S.C. 119(e) to: U.S. Patent Application 62/006,873, entitled “Integrated UPS Power Supply System” and filed Jun. 2, 2014. The foregoing application is hereby incorporated by reference into the present application in its entirety. 
     
    
     FIELD OF THE INVENTION 
       [0002]    The present invention described herein relate generally to a power supply system. More specifically, the present invention described herein relates generally an integrated direct-current based uninterrupted power supply system (“Integrated UPS power supply system” hereinafter) for the computers, and/or servers. 
       BACKGROUND 
       [0003]    In the conventional computer(s), the power supply directly comes from the AC power socket. The AC power is then converted through ATX power supply to multiple DC voltage rails, including the ranges of 12V, 5V, 3.3V, and −12V. These voltages rails are used to power different components and peripherals and then generate even lower voltages rails to power the CPU, DRAM and system chipset on the server&#39;s main board. Therefore, conventional UPS systems are designed to support legacy power supplies by storing energy outside of the server or computer unit and convert the battery-based DC voltage to AC electricity to be fed to the AC power supplies. Normally the DC to AC inversion is not efficient due the voltage differences and the inverter design. For UPS in data center, it is normally centralized to support all the servers or computers. The manufacturing of the conventional centralized UPS system can very costly, resulting in more complicated issues and manpower to repair, support and maintain the system. 
         [0004]    The current integrated UPS power supply system can overcome the sizing limitations and enhance the efficiency of the conventional UPS system. The energy storage unit of the current invention can be designed and be positioned inside the computer and/or server, and replacing the energy inefficient standard ATX power supply unit with a more efficient AC adapter and related DC-DC converters. Therefore, the overall size of the conventional UPS power supply system can be significantly reduced. Moreover, battery capacity can be tailored to meet the requirements of the power demands of each computing environment more flexibly with either integrated or as expansion unit externally. The current invention can achieve higher energy efficiency, reduces cost, facilitates maintenance and prolongs the batteries running time. The current Integrated UPS power supply system can apply to the conventional and varied data centers, enterprise server farms and other computing environments. 
         [0005]    The current invention can improve overall system efficiency by allowing the system to use less energy and space. The current invention reduces the electricity required to cool housing facilities. The built-in energy storage unit can be easily and efficiently charged from green energy sources such as solar panel, wind turbine or other latest energy power sources such as fuel cells engine, and from conventional energy sources such as diesel engines. The energy storage unit built-in to a server/computer can also be linked, in parallel connectivity, to energy storage units in other servers/computers making it effectively a larger energy storage system. This provides a large pool of energy in which different servers/computers with different energy needs can draw upon. This prevents certain critical servers to run out of battery earlier than non-critical servers. The storage capacity and system health of energy storage unit can be monitored by server/computer and then back to computer networks. 
         [0006]    The current invention provides a scalable computing environment to simplify the routine service and maintenance in the battery and power supply system. The conventional UPS system in data center or server farm, generally called the centralized UPS system, usually requires periodic maintenance that will either put the system from corresponding computing resources into standby or powered down or activate a duplicated UPS system. This requires significant amount of time and cost. Our current invention provides a decentralized UPS system which provides less maintenance cycles on a rotational basis. The current design can provide more power efficiency while having less downtime and redundancy. The current invention provides an integrated, compact, and more power efficient power supply system that can generally avoids the traditional bulky to fit a variety of user&#39;s needs. 
       SUMMARY 
       [0007]    Disclosed herein is an integrated UPS power supply system connected to an AC power input and a server or a computer, comprising: an AC adapter/charger unit for providing power to the system and charging an energy storage unit; the energy store unit for monitoring/controlling and powering the system, and communicating the powering &amp; battery capacity status with the server or computer, and a DC-to-DC converter circuit for providing multiple DC voltage rails. 
         [0008]    Disclosed herein is an integrated UPS power supply system connected to an AC power input and a server or a computer, comprising: an AC adapter/charger unit for providing power to the system and charging the energy store unit; the energy store unit for detecting the power outage from the system, disabling the AC adapter charger, and enabling server or computer to remain or enter in a lower power mode, and a DC-to-DC converter circuit for providing multiple DC voltage rails. 
         [0009]    Disclosed herein is an integrated power supply system connected to an AC power input and a server or a computer, comprising: an AC adapter charger unit for providing power the system and charging an energy storage unit; a DC-to-DC converter circuit for providing multiple DC voltage rails, and an energy store unit for detecting the low power in a predetermined minimum level, disabling the AC adapter charger, notifying and requesting the server computer to shut down. 
         [0010]    Disclosed herein is an integrated power supply system connected to an AC power input and a server or a computer, comprising: an AC adapter charger unit for providing power and charging an energy storage unit; a DC-to-DC converter circuit for providing multiple DC voltage rails, and the energy store unit for monitoring, controlling and powering the system, and communicating the powering &amp; battery capacity status with the server or computer, wherein the energy store unit comprises battery back, a microcontroller and a programmable current limit. 
         [0011]    Disclosed herein is an integrated power supply system connected to an AC power input and a server or a computer, comprising: an AC adapter charger unit for providing power and charging an energy storage unit; a DC-to-DC converter circuit for providing multiple DC voltage rails, and the energy store unit for monitoring, controlling, powering the system, and communicating the powering &amp; battery capacity status with the server or computer, wherein the energy store unit comprises a microcontroller, a programmable current limit, and at least one series-connected lead-acid (LA) battery pack. 
         [0012]    Disclosed herein is an integrated power supply system connected to an AC power input and a server or a computer, comprising: an AC adapter charger unit for providing power and charging an energy storage unit a DC-to-DC converter circuit for providing multiple DC voltage rails, and the energy store unit for monitoring, controlling, powering the system, and communicating the powering &amp; battery capacity status with the server or computer, wherein the energy store unit comprises a microcontroller, a programmable current limit, and at least one series-connected lithium-ion (Li) battery pack. 
         [0013]    Disclosed herein is an integrated power supply system connected to an AC input supply and a server or a computer, comprising: an AC adapter charger unit for providing power and charging an energy storage unit; a DC-to-DC converter circuit for providing multiple DC voltage rails, and the energy store unit for monitoring, controlling, powering the system, and communicating the powering &amp; battery capacity status with the server or computer, wherein the energy store unit comprises a microcontroller, a programmable current limit, and the combinations of at least one series-connected lead-acid (LA) battery pack and at least one series-connected lithium-ion (Li) battery pack. 
         [0014]    Disclosed herein is an integrated power supply system connected to an AC input supply and a server or a computer, comprising: a DC-to-DC converter circuit for providing multiple DC voltage rails, and an integrated AC adapter/charger and energy storage unit, comprising: an AC adapter/charger unit for providing power and charging an energy storage unit; and an energy store unit for monitoring and controlling the remaining power supply to the system, and communicating the power supply status with the server or computer. 
         [0015]    Disclosed herein is a method of supplying uninterrupted power connected to the computer or server, comprising: (a) providing power and charging an energy storage unit; (b) controlling, powering the system and communicating the powering &amp; battery capacity status with the server or computer; and (c) integrating multiple DC voltage rails DC-to-DC converter circuit to the main board of computer or server. 
         [0016]    Disclosed herein is a method of supplying uninterrupted power to the computer or server, comprising: (a) providing power and charging an energy storage unit; (b) providing multiple DC voltage rails; and (c) detecting the available low power in a predetermined minimum level, disabling the power, notifying and requesting the server computer to shut down. 
         [0017]    While multiple embodiments are disclosed, still other embodiments of the present invention will become apparent to those skilled in the art from the following detailed description, which shows and describes illustrative embodiments of the invention. As will be realized, the invention is capable of modifications in various aspects, all without departing from the spirit and scope of the present invention. Accordingly, the drawings and detailed description are to be regarded as illustrative in nature and not restrictive. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0018]      FIG. 1  is an illustration of the conventional UPS power supply system. 
           [0019]      FIG. 2  is an illustration of the integrated UPS power supply system. 
           [0020]      FIG. 3  is an illustration of the part of the integrated UPS power supply system in the recovery mode. 
           [0021]      FIG. 4  is a flowchart representation of the power depletion mode of the current invention. 
           [0022]      FIG. 5  is an illustration of another embodiment of integrated UPS power supply system. 
           [0023]      FIG. 6  is an illustration of another embodiment of integrated UPS power supply system. 
           [0024]      FIG. 7  is an illustration of another embodiment of integrated UPS power supply system. 
       
    
    
     DETAILED DESCRIPTION 
       [0025]      FIG. 1  shows a conventional UPS system  201 . The system  201  can have some drawbacks that the energy power efficiency will be reduced significantly through two stages. Firstly, the energy is sent to the DC to AC converter  205 . Secondly, the energy is sent from the AC to the standard ATX power supply  202 . Each stage can cause up to 10-20% of energy lost in heat. In addition, the standard ATX power supply uses different voltage rails architecture than the single voltage AC adapters to convert AC to DC electricity. The conventional UPS system can lose up to 20-30% energy efficiency. 
         [0026]      FIG. 2  describes the current invention, an integrated UPS power system  100  that connects to an AC power source and outputs DC power to the server. The energy storage unit  102  can be positioned inside the same mechanical chassis of the server/computer  200  or close to it thereof in order to reduce the length of the power wiring connected to the server/computer  200 . The integrated UPS power system  100  is comprised of an AC adapter/charger  101 , an energy storage unit  102 , and a DC-to-DC converter circuit  103 . The DC-to-DC converter circuit  103  is to provide multiple DC voltage rails to the sever/computer  200 . 
         [0027]    In  FIG. 3 , the energy storage unit  102  comprises at least one unit of battery packs  107 , a microcontroller  106 , and a programmable current limit  105 . The battery packs  107  comprise at least one battery pack in any type of battery chemistries or combined. Examples of the battery types include, but not limit to, the lead-acid chemistry, lithium-ion chemistry, the combinations thereof, or other conventional battery chemistries. Based on power requirement, the integrated UPS power system  100  can also connect to one or more external energy storage units  102 . 
         [0028]    In  FIG. 2 , the integrated UPS power system  100  comprises an alternative power source  104 . This feature serves as an extra power source in addition to the AC adapter/charge  101 . The alternative power source  104  comprises a programmable power converter system that provides voltage or current conversion, filtering, and control from outside energy source. In another embodiment, the alternative power source  104  comprises an MPPT (“maximum power point tracking”) for converting the powers acquired from the outside energy sources. The outside power sources can include, but not limit to, the data center or cloud application, the green technologies including the solar panels, wind electricity, fuel electricity, etc. In another embodiment, the alternative power source  104  comprises an MPPT and a microcontroller for programming the voltage or current conversion from outside sources. 
         [0029]    The AC adapter/charger  101  connects directly to the AC power source and outputs the voltage source suitable for charging the energy storage unit  102  and for powering the DC-to-DC converter circuit  103 . The energy storage unit  102  monitors the charging voltage and current decides when to stop the charging. The DC-to-DC converter circuit  103  provides multiple DC voltages to power the server main board. 
         [0030]    Intelligence is implemented in the integrated UPS system  100  to communicate with the PC server/computer  200  to collaborate on the overall energy usage plan. The energy usage plan of the current system  100  comprises the following three operation scenarios, the normal operation, the stage of power outage, and the recovery mode. 
         [0031]    In the normal operation, the AC adapter charger  101  serves as the power source for the server/computer  200  and also charge the energy storage unit  102 . 
         [0032]    During the power outage, there is no AC power and the AC adapter  101  is disabled. The energy storage unit  102  provides power to the server/computer  200 , which may work under a lower power mode to extend the battery backup time. The power outage is communicated to the server  200  by the energy storage unit  102  when it detects that the AC adapter  101  is not providing the power. 
         [0033]      FIG. 3  shows the recovery mode  110 , wherein the external AC power is back and AC adapter/charger  101  now provides sufficient energy to power the server  200  and charge the energy storage unit  102 . To minimize the AC adapter output capacity and to alleviate the design requirements of the AC adapter, the charging current will be optimally controlled. A special programmable current limit  105  is built into the energy storage unit  102 . The server/computer  200  also can communicate the energy storage unit  102  through built-in microcontroller  106  to inform how much current it actually needs so the energy storage unit  102  can decide to provide more current to charge the battery packs  107  inside energy storage unit  102 . For normal design, the AC adapter only supplies about 30% to 40% more current than server/computer system  200  requires. Therefore, only 30% to 40% current will be used to charge the energy storage unit  102 . But under some operation condition, such as server/computer  200  either in idle state or sleep mode, the server/computer  200  will not need the original assigned maximum power, so server/computer  200  can inform energy storage unit  102  through microcontroller  106 . The microcontroller  106  can control programmable current limit  105  to increase the charging current from AC adapter/charger  101 , hence the charging time can be reduced without increasing the rated capacity of AC adapter/charger  101 . This communication can happen dynamically through IPMI (“Intelligent Platform Management Interface”) normally used in server/computer control interface system or other interface system. 
         [0034]      FIG. 4  shows the flowchart of the energy depletion mode of the integrated UPS power supply system  100 . Block  151  shows when the energy storage unit is depleted extensively to a preset low power mode during power outage and the charging current is not immediately available. The integrated UPS power supply system  100  makes the following two commands. First, as shown in Block  152 , the integrated UPS power supply system  100  notifies the server/computer  200  to take proper action. In Block  154 , the server/computer  200  performs system shut down accordingly. As shown in Block  153 , the integrated UPS power supply system  100  then disable the power output as detecting the low current drainage due to the server/computer shutdown. Second, the energy store unit  102  detects the overall energy down to a minimum predetermined capacity level and server/computer still not responds, it also disables its power output. When the AC power resumes, the integrated UPS power supply system  100  will then switch back to its normal operation. 
         [0035]      FIG. 5  shows another embodiment the integrated UPS power system  120  that connects to an AC power source and outputs DC power to the server. The integrated UPS power system  120  is comprised of an integrated AC &amp; energy storage unit  121 , and a DC-to-DC converter circuit  103 . The integrated AC &amp; energy storage unit  121  comprises an AC adapter/charger  101 , and an energy storage unit  102  to minimize the design components for some application, the system may not need higher power capacity, so the size of AC adapter charger  101  and energy storage unit  102  is minimized. 
         [0036]    In  FIGS. 3 &amp; 5 , the energy storage unit  102  comprises at least one battery packs  107 , a microcontroller  106 , and a programmable current limit  105 . The battery packs  107  comprises at least one series-connected lead-acid (LA) battery pack, at least one series-connected lithium-ion (Li) battery pack, and the combinations of at least one series-connected lead-acid (LA) battery pack and at least one series-connected lithium-ion (Li) battery pack. Based on the user&#39;s needs in the design of energy supply, the integrated UPS power system  120  can also connect to an external energy storage unit  102 . 
         [0037]    In  FIG. 5 , the integrated UPS power system  120  comprises an alternative power source  104 . This feature serves as an extra power source in addition to the AC adapter charge  101 . The alternative power source  104  comprises a programmable power converter system that provides voltage or current conversion, filtering, and control from outside energy source. In another embodiment, the alternative power source  104  comprises an MPPT (“maximum power point tracking”) for converting the powers acquired from the outside energy sources. The outside power sources can include, but not limit to, the data center or cloud application, the green technologies including the solar panels, wind electricity, fuel electricity, etc. In another embodiment, the alternative power source  104  comprises an MPPT and a microcontroller for programming the voltage or current conversion from outside sources. 
         [0038]    The integrated AC &amp; energy storage unit  121  comprising the AC adapter  101  connects directly to the AC power source and outputs one voltage rail suitable for charging the energy storage unit  102  and for powering the DC-to-DC converter circuit  103 . The energy storage unit  102  of the integrated AC and energy storage unit  121  monitors the charging voltage and decides whether to accept the charge. The DC-to-DC converter circuit  103  provides multiple DC voltages to power the server main board including the standard ATX power supply. 
         [0039]    Intelligence is implemented in the integrated UPS system  120  to communicate with the PC server/computer  200  to collaborate on the overall energy usage plan. The energy usage plan of the current system  120  comprises the following three operation scenarios, including the normal operation, the stage of power outage, and the recovery mode. 
         [0040]    In the normal operation status, the AC adapter serves as the main power source for the server/computer  200  and then for charging the energy storage unit  102  inside the integrated AC &amp; energy storage unit  121 . 
         [0041]    During the stage of power outage, the AC adapter  101  is disabled. The energy storage unit  102  provides power to the server/computer  200 , which may work under a lower power mode to extend the battery backup time. The low power mode is communicated to the server  200  by the integrated UPS power supply system  100  when it detects that the AC adapter  101  is not providing the power. 
         [0042]      FIG. 6  shows another embodiment the integrated UPS power system  130  that connects toan AC power source and outputs DC power to the server. The integrated UPS power system  130  is comprised of a AC adapter/charger  101 , an energy storage unit  102 , and sever computer assembly  131  comprises a DC-to-DC converter circuit  103  integrated inside main board of the server/computer  131 . 
         [0043]    In  FIG. 6 , the integrated UPS power system  130  comprises an alternative power source  104 . This feature serves as an extra power source in addition to the AC adapter charge  101 . The alternative power source  104  comprises a programmable power converter system that provides voltage or current conversion, filtering, and control from outside energy source. In another embodiment, the alternative power source  104  comprises an MPPT (“maximum power point tracking”) for converting the powers acquired from the outside energy sources. The outside power sources can include, but not limit to, the data center or cloud application, the green technologies including the solar panels, wind electricity, fuel electricity, etc. In another embodiment, the alternative power source  104  comprises an MPPT and a microcontroller for programming the voltage or current conversion from outside sources. 
         [0044]    Intelligence is implemented in the integrated UPS system  130  to communicate with the server computer assembly  131  to collaborate on the overall energy usage plan. The energy usage plan of the current system  130  comprises the following three operation scenarios, including the normal operation, the stage of power outage, and the recovery mode. 
         [0045]    In the normal operation status, the AC adapter serves as the main power source for the server computer assembly  131  and then for charging the energy storage unit  102 . 
         [0046]    During the stage of power outage, the AC adapter  101  is disabled. The energy storage unit  102  provides power to the server/computer  200 , which may work under a lower power mode to extend the battery backup time. The low power mode is communicated to the server computer assembly  131  by the integrated UPS power supply system  130  when it detects that the AC adapter  101  is not providing the power. 
         [0047]      FIGS. 3 &amp; 6  show the recovery mode  110  of the integrated UPS power supply system  130 , wherein the external power is back online and AC adapter  101  now provides sufficient energy to power the server computer assembly  131  and charge the energy storage unit  102 . To minimize the AC adapter output capacity and to alleviate the design requirements of the AC adapter, the charging current will be optimally controlled. A special programmable current limit  105  is built into energy storage unit. The server computer assembly  131  also can communicate the energy storage unit  102  through built-in microcontroller  106  to inform how much current it actually needs so the storage unit can decide to provide more current to charge the battery packs  107  inside energy storage unit  102 . For normal design, the AC adapter only supplies about 30% to 40% more current than server/computer system  200  requires. Therefore, only 30% to 40% current will be used to charge the energy storage unit  102 . But under some operation condition, such as server computer assembly  131  either in idle state or sleep mode, the server computer assembly  131  will not need the original assigned maximum power, so the server computer assembly  131  can inform energy storage unit  102  through microcontroller  106 . The microcontroller  106  can control programmable current limit  105  to increase the charging current from AC adapter/Charger  101 , hence the charging time can be reduced without increasing the rated capacity of AC adapter/charger  101 . This communication can happen dynamically through IPMI normally used in server/computer control interface system. 
         [0048]      FIGS. 4 &amp; 6  show the flowchart of the energy depletion mode of the integrated UPS power supply system  130 . Block  151  shows when the energy storage unit is depleted extensively during power outage and the charging current is not immediately available. The integrated UPS power supply system  130  will cut off the output power in order to protect the life of the internal battery packs inside the energy storage unit  102  and to prevent from further damages. The UPS power supply system  130  makes the following two commands. First, as shown in Block  152 , the UPS power supply system  130  notifies the server/computer  200  to take proper action. The action includes shutting down the UPS power supply system  130 . In Block  154 , the server/computer  200  commands the UPS power supply system  130  to shut down. The USP power supply system  130  is then automatically and completely shut down in order to avoid complete power drainage. Second, as shown in Block  151 , the energy store unit  102  can detect the situations when the internal battery packs have been drained extensively showing the low current drainage. The energy store unit  102  can also detect when the overall energy lowers down to a minimum predetermined capacity level. The energy store unit  102  sends data and/or signals to the server computer assembly  131 . In Block  153 , the energy store unit  102  disables the output supply. When the AC power resumes, the energy storage unit  102  is recharged sufficiently. The integrated UPS power supply system  130  will then switch back to its normal operation. 
         [0049]      FIG. 7  shows another embodiment the integrated UPS power system  140  that connects to an AC power source and outputs DC power to the server. The integrated UPS power system  130  is comprised of an integrated AC &amp; energy storage unit  121 , and a server computer assembly  131 . The integrated AC &amp; energy storage unit  121  comprises an AC adapter/charger  101  and an energy storage unit  102 . The sever computer assembly  131  comprises a DC-to-DC converter circuit  103  integrated into main board of the server computer  131 . 
         [0050]    In  FIGS. 3 &amp; 7 , the energy storage unit  102  comprises at least one battery packs  107 , a microcontroller  106 , and a programmable current limit  105 . The battery packs  107  comprises at least one series-connected lead-acid (LA) battery pack, at least one series-connected lithium-ion (Li) battery pack, and the combinations of at least one series-connected lead-acid (LA) battery pack and at least one series-connected lithium-ion (Li) battery pack. Based on the user&#39;s needs in the design of energy supply, the integrated UPS power system  100  can also connect to an external energy storage unit  102 . 
         [0051]    In  FIG. 7 , the integrated UPS power system  140  comprises an alternative power source  104 . This feature serves as an extra power source in addition to the AC adapter charge  101 . The alternative power source  104  comprises a programmable power converter system that provides voltage or current conversion, filtering, and control from outside energy source. In another embodiment, the alternative power source  104  comprises an MPPT (“maximum power point tracking”) for converting the powers acquired from the outside energy sources. The outside power sources can include, but not limit to, the data center or cloud application, the green technologies including the solar panels, wind electricity, fuel electricity, etc. In another embodiment, the alternative power source  104  comprises an MPPT and a microcontroller for programming the voltage or current conversion from outside sources. 
         [0052]    Intelligence is implemented in the integrated UPS system  140  to communicate with the server computer assembly  131  to collaborate on the overall energy usage plan. The energy usage plan of the current system  140  comprises the following three operation scenarios, including the normal operation, the stage of power outage, and the recovery mode. 
         [0053]    In the normal operation status, the AC adapter serves as the main power source for the server computer assembly  131  and then for charging the integrated AC &amp; energy storage unit  121 . 
         [0054]    As shown in  FIG. 7 , during the stage of power outage, the AC adapter  101  of the integrated AC &amp; energy storage unit  121  is disabled. The energy storage unit  102  of the integrated AC &amp; energy storage unit  121  provides power to the server computer assembly  131 , which may work under a lower power mode to extend the battery backup time. The low power mode is communicated to the server computer assembly  131  by the integrated UPS power supply system  140  when it detects that the AC adapter  101  is not providing the power. 
         [0055]      FIGS. 3 &amp; 7  show the recovery mode  110  of the integrated UPS power supply system  140 , wherein the external power is back online and AC adapter  101  now provides sufficient energy to power the server computer assembly  131  and charge the energy storage unit  102 . To minimize the AC adapter output capacity and to alleviate the design requirements of the AC adapter, the charging current will be optimally controlled. A special programmable current limit  105  is built into energy storage unit. The server computer assembly  131  also can communicate the energy storage unit  102  through built-in microcontroller  106  to inform how much current it actually needs so the storage unit can decide to provide more current to charge the battery packs  107  inside energy storage unit  102 . For normal design, the AC adapter only supplies about 30% to 40% more current than server/computer system  200  requires. Therefore, only 30% to 40% current will be used to charge the energy storage unit  102 . But under some operation condition, such as server computer assembly  131  either in idle state or sleep mode, the server computer assembly  131  will not need the original assigned maximum power, so the server computer assembly  131  can inform energy storage unit  102  through microcontroller  106 . The microcontroller  106  can control programmable current limit  105  to increase the charging current from AC adapter/Charger  101 , hence the charging time can be reduced without increasing the rated capacity of AC adapter/charger  101 . This communication can happen dynamically through IPMI normally used in server/computer control interface system. 
         [0056]      FIGS. 4 &amp; 7  show the flowchart of the energy depletion mode of the integrated UPS power supply system  140 . Block  151  shows when the energy storage unit is depleted extensively during power outage and the charging current is not immediately available. The integrated UPS power supply system  140  will cut off the output power in order to protect the life of the internal battery packs inside the energy storage unit  102  of the integrated AC &amp; energy storage unit  121  and to prevent from further damages. The UPS power supply system  140  makes the following two commands. First, as shown in Block  152 , the UPS power supply system  140  notifies the server computer assembly  131  to take proper action. The action includes shutting down the UPS power supply system  140 . In Block  154 , the server computer assembly  131  commands the UPS power supply system  140  to shut down. The USP power supply system  140  is then automatically and completely shut down in order to avoid complete power drainage. Second, as shown in Block  151 , the energy store unit  102  of the integrated AC &amp; energy storage unit  121  can detect the situations when the internal battery packs have been drained extensively showing the low current drainage. The energy store unit  102  can also detect when the overall energy lowers down to a minimum predetermined capacity level. The energy store unit  102  sends data and/or signals to the server computer assembly  131 . In Block  153 , the energy store unit  102  of the integrated AC &amp; energy storage unit  121  disables the output supply. When the AC power resumes, the energy storage unit  102  of the integrated AC &amp; energy storage unit  121  is recharged sufficiently. The integrated UPS power supply system  140  will then switch back to its normal operation.