Power supply management system

Abstract

The utility model provides a power supply management system which comprises a first UPS and at least one second UPS, the first end of the first UPS is connected with the first end of the second UPS, the second end of the first UPS is connected with the first end of a first protection unit, and the second end of the second UPS is connected with the first end of a second protection unit; a first protection unit and at least one second protection unit, wherein the second ends of the first protection unit and the second protection unit are connected with the communication board; and the communication board is connected with the second ends of the first protection unit and the second protection unit. The parallel operation of multiple groups of UPSs can be realized, the capacity of the battery is increased, and the problem of equipment outage caused by the fault of one group of UPSs is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a power supply management system. Background Art

[0002] Uninterruptible power supply (UPS) is mainly used to provide uninterruptible power supply to equipment with high power stability. When the mains power supply is normal, the UPS can stabilize the mains power and supply it to the load. When the mains power supply is interrupted, the UPS can act as an inverter to convert the internally stored electrical energy into mains power to provide power to the load and maintain normal operation of the load. Utility Model Content

[0003] The utility model provides a power supply management system to solve the problems in related technologies.

[0004] The present invention solves the above-mentioned problem through the following technical solutions. The power supply management system proposed by the present invention includes: a first UPS and at least one second UPS, wherein the first end of the first UPS is connected to the first end of the second UPS, the second end of the first UPS is connected to the first end of the first protection unit, and the second end of the second UPS is connected to the first end of the second protection unit; a first protection unit and at least one second protection unit, wherein the second ends of the first protection unit and the second protection unit are connected to a communication board; and a communication board, wherein the communication board is connected to the second ends of the first protection unit and the second protection unit.

[0005] Furthermore, the first protection unit includes: a first battery pack, wherein the first end of the first battery pack is connected to the second end of the first UPS; a first protection board, wherein the first end of the first protection board is connected to the first end of the first battery pack, and the second end of the first protection board is connected to the second end of the first battery pack; and a first communication isolation module, wherein the first end of the first communication isolation module is connected to the second end of the first battery pack and the second end of the first protection board, and the second end of the first communication isolation module is connected to the communication board.

[0006] Furthermore, the second protection unit includes: a second battery pack, a first end of the second battery pack is connected to the second end of the second UPS; a second protection board, a first end of the second protection board is connected to the first end of the second battery pack, and a second end of the second protection board is connected to the second end of the second battery pack; a second communication isolation module, a first end of the second communication isolation module is connected to the second end of the second battery pack and the second end of the second protection board, and the second end of the second communication isolation module is connected to the communication board.

[0007] Furthermore, the first protection unit also includes a first protection board switch, a first end of the first protection board switch is connected to the second end of the first UPS, and a second end of the first protection board switch is connected to the first end of the first protection board and the first end of the first battery pack; the second protection unit also includes a second protection board switch, a first end of the second protection board switch is connected to the second end of the second UPS, and a second end of the second protection board switch is connected to the first end of the second protection board and the first end of the second battery pack.

[0008] Furthermore, the power supply management system also includes: a load unit, the first end of the load unit is connected to the second end of the first UPS, and the first end of the load unit is connected to the first end of the first protection unit; the first end of the load unit is connected to the second end of the second UPS, and the first end of the load unit is connected to the first end of the second protection unit; the second end of the load unit is connected to the communication board.

[0009] Furthermore, the load unit includes: a load switch, a first end of the load switch is connected to the second end of the first UPS, and a first end of the load switch is connected to the first end of the first protection unit; a voltage conversion module, a first end of the voltage conversion module is connected to the second end of the load switch; a power detection module, a first end of the power detection module is connected to the second end of the load switch and the first end of the voltage conversion module, a second end of the power detection module is connected to the second end of the voltage conversion module, and a third end of the power detection module is connected to the communication board; a load, a first end of the load is connected to the second end of the voltage conversion module and the second end of the power detection module.

[0010] Furthermore, the power supply management system also includes: a first anti-backflow unit, the first end of the first anti-backflow unit is connected to the second end of the first UPS and the first end of the first protection unit, and the second end of the first anti-backflow unit is connected to the first end of the load switch; a second anti-backflow unit, the first end of the second anti-backflow unit is connected to the second end of the second UPS and the first end of the second protection unit, and the second end of the second anti-backflow unit is connected to the first end of the load switch.

[0011] Furthermore, the power supply management system further includes: a host computer, which is connected to the communication board.

[0012] In summary, the beneficial effects of the present invention are:

[0013] By connecting multiple uninterruptible power supplies (UPS) in parallel, when a single UPS fails, the QITE UPS can provide voltage stabilization and power supply, reducing device power outages caused by UPS failure and improving device battery capacity and endurance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 A schematic diagram of a power supply management system provided by the utility model;

[0016] Figure 2 A schematic diagram of a power supply management system provided by the utility model;

[0017] Figure 3 A schematic diagram of a power supply management system provided by the utility model;

[0018] Figure 4 A schematic diagram of a power supply management system provided by the utility model;

[0019] Figure 5 This is a schematic diagram of an example of a power supply management system provided by the utility model. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Figure 1 This is a schematic diagram of a power supply management system provided by the utility model. Figure 1 As shown, the structure of the power supply management system is as follows.

[0022] The power supply management system of the present invention can be deployed in electronic devices, for example, electronic devices that have high requirements for power supply stability and high requirements for device battery life.

[0023] The power supply management system provided by the utility model includes: a first UPS1 and at least one second UPS2, the first end of the first UPS1 is connected to the first end of the second UPS2, the second end of the first UPS1 is connected to the first end of the first protection unit 3, and the second end of the second UPS2 is connected to the first end of the second protection unit 4; the first protection unit 3 and at least one second protection unit 4, the second ends of the first protection unit 3 and the second protection unit 4 are connected to the communication board 5; the communication board 5, the communication board 5 is connected to the second ends of the first protection unit 3 and the second protection unit 4.

[0024] like Figure 1 As shown, taking the number of second UPS2 as one as an example, the first terminal 101 of the first UPS1 is connected to the first terminal 102 of the second UPS2, that is, the first UPS1 and the second UPS2 are connected in parallel. For example, when there are multiple second UPS2, the multiple second UPS2 and the first UPS1 are all connected in parallel. For example, the number of second UPS2 can be determined based on actual application requirements.

[0025] Optionally, the power supply management system may further include an adapter (not shown in the figure), that is, the first end 101 of the first UPS1 is connected to the adapter, and the first end 102 of the second UPS2 is connected to the adapter, that is, the first UPS1 and the second UPS2 are connected in parallel. For example, when there are multiple second UPSs, the multiple second UPSs and the first UPS are all connected in parallel, and the UPS and the adapter are connected in series.

[0026] For example, the adapter can be used to connect an external power supply, and the external power supply can provide power to the electronic device through the adapter. When the external power supply is supplying power, the first UPS and the second UPS can stabilize the external power; for example, the power supply management system may not include an adapter, that is, the power supply management system may not require external power supply. When the external power supply stops supplying power, the first UPS and the second UPS can act as inverters to release the stored electrical energy to provide power to the electronic device and maintain normal operation of the equipment. The present invention increases the number of UPSs and connects multiple UPSs in parallel. When one of the UPSs fails, the other UPSs release electrical energy to maintain the operation of the equipment. This can avoid the power supply management system of a single UPS causing equipment power outages and data loss when the UPS fails, and can improve the safety of the equipment.

[0027] For example, by connecting multiple UPS in parallel, the battery capacity of the power supply management system can be increased. For example, when the battery capacity of a single UPS is 3A, the battery capacity of two UPS can reach 6A, which can improve the battery life of the equipment.

[0028] In this power supply management system, the second end 103 of the first UPS1 is connected to the first end 104 of the first protection unit 3, the second end 105 of the second UPS2 is connected to the first end 106 of the second protection unit 4, the second end 107 of the first protection unit 3 is connected to the communication board 5, and the second end 108 of the second protection unit 4 is connected to the communication board 5.

[0029] Specifically, the above-mentioned first protection unit 3 and second protection unit 4 can be used to protect and monitor the circuit of the power supply management system to prevent the circuit from overvoltage, over-discharge, overcurrent, overcharging and other phenomena from damaging the power supply management system. Specifically, the first protection unit 3 can be used to monitor and balance the branch where the first UPS1 is located, and the second protection unit 4 can be used to monitor and balance the branch where the second UPS2 is located. The first protection unit 3 and the second protection unit 4 can be connected to the communication board 5, and the communication board 5 can be used to collect, store, process and analyze the data of the power supply management system to realize the detection of the power supply management system, that is, the protection unit can report the monitored data to the communication board 5, and can realize reporting when a fault occurs in the power supply management system.

[0030] Figure 2 This is a schematic diagram of a power supply management system provided by the utility model. Figure 2 As shown, the structure of the power supply management system is as follows.

[0031] Furthermore, the first protection unit 3 includes: a first battery group 31, the first end 201 of the first battery group 31 is connected to the second end 103 of the first UPS1; a first protection board 32, the first end 202 of the first protection board 32 is connected to the first end 201 of the first battery group 31, and the second end 203 of the first protection board 32 is connected to the second end 204 of the first battery group 31; a first communication isolation module 33, the first end 205 of the first communication isolation module 33 is connected to the second end 201 of the first battery group 31 and the second end 203 of the first protection board 32, and the second end 206 of the first communication isolation module 33 is connected to the communication board 5.

[0032] The second protection unit 4 includes: a second battery group 41, the first end 207 of the second battery group 41 is connected to the second end 105 of the second UPS2; a second protection board 42, the first end 208 of the second protection board 42 is connected to the first end 207 of the second battery group 41, and the second end 209 of the second protection board 42 is connected to the second end 210 of the second battery group 41; a second communication isolation module 43, the first end 211 of the second communication isolation module 43 is connected to the second end 210 of the second battery group 41 and the second end 209 of the second protection board 42, and the second end 212 of the second communication isolation module 43 is connected to the communication board 5.

[0033] In other words, the protection unit may not include a protection board switch. In this case, the first end 104 of the first protection unit 3 can be the first end 201 of the first battery group 31, or the first end 202 of the first protection board 32, and the first end 106 of the second protection unit 4 can be the first end 207 of the second battery group 41, or the first end 208 of the second protection board 42; the first battery group 31 and the first protection board 32 are connected in parallel, the first battery group 31 and the first protection board 32 are respectively connected in series with the first UPS1, the second battery group 41 and the second protection board 42 are connected in parallel, and the second battery group 41 and the second protection board 42 are respectively connected in series with the second UPS2.

[0034] Furthermore, the first protection unit 3 also includes a first protection board switch 34, the first end 213 of the first protection board switch 34 is connected to the second end 103 of the first UPS1, and the second end 214 of the first protection board switch 34 is connected to the first end 202 of the first protection board 32 and the first end 201 of the first battery group 31; the second protection unit 4 also includes a second protection board switch 44, the first end 215 of the second protection board switch 44 is connected to the second end 105 of the second UPS2, and the second end 216 of the second protection board switch 44 is connected to the first end 208 of the second protection board 42 and the first end 207 of the second battery group 41.

[0035] In other words, the protection unit may include a protection board switch, which may be placed between the UPS and the protection board. The protection board switch is used to change the state of the protection board, for example, switching the protection board from an off state to an on state, or from an on state to an off state, etc. For example, the state of the protection board switch may be set to an off state by default and may be switched manually.

[0036] Specifically, the battery pack can be used to power the UPS, that is, the first battery pack 31 is used to power the first UPS1, and the second battery pack 41 is used to power the second UPS2. When there is no external power supply, the UPS can control the release of the electric energy stored in the battery pack to power the device.

[0037] Specifically, the protection board (including the first protection board and the second protection board) can be used to monitor and protect the battery pack. For example, the protection board may include a battery management system (BMS), which can accurately estimate the status of the battery pack, such as the remaining power of the battery pack, and can manage the remaining power of the battery pack to be within a reasonable preset range to avoid battery damage caused by overcharging or over-discharging of the battery pack; the battery management system can dynamically detect the status of the battery pack, such as the voltage, charge and discharge current, and temperature of the battery pack, to achieve real-time monitoring of the battery pack, which is convenient for understanding the battery condition; the battery management system can use balancing technology to achieve balance between the batteries in the battery pack, such as the balance of charge and discharge current.

[0038] For example, the protection board may also generate corresponding fault information for reporting when a fault occurs in the battery pack.

[0039] Specifically, the communication isolation module (including the first communication isolation module and the second communication isolation module) can be used to isolate the communication board and the battery pack. Since the voltage of the battery pack and the protection board is relatively high, and the voltage of the communication board is relatively low, the battery pack and the communication board cannot be directly connected. Therefore, they can be isolated through the communication isolation module, which can prevent the high voltage from affecting the communication board circuit and improve the reliability and safety of the system. The second end 206 of the first communication isolation module 33 can be the second end 107 of the first protection unit 3, and the second end 212 of the second communication isolation module 43 can be the second end 108 of the second protection unit 4. The protection board can transmit the monitored battery pack information, such as battery parameter information, such as power, voltage, charge and discharge current, generated fault information, etc., to the communication board 5 through the communication isolation module to realize the reporting of the battery status.

[0040] Figure 3 This is a schematic diagram of a power supply management system provided by the utility model. Figure 3 As shown, the structure of the power supply management system is as follows.

[0041] Furthermore, the power supply management system also includes a load unit 6, the first end 301 of the load unit 6 is connected to the second end 103 of the first UPS1, and the first end 301 of the load unit 6 is connected to the first end 104 of the first protection unit 3; the first end 301 of the load unit 6 is connected to the second end 105 of the second UPS2, and the first end 301 of the load unit 6 is connected to the first end 106 of the second protection unit 4; the second end 302 of the load unit 6 is connected to the communication board 5.

[0042] For example, when the external power source stops supplying power, the UPS can provide power to the load by releasing the power stored in the battery pack.

[0043] Figure 4 This is a schematic diagram of a power supply management system provided by the utility model. Figure 4 As shown, the structure of the power supply management system is as follows.

[0044] Furthermore, the load unit 6 includes: a load switch 61, a first terminal 401 of the load switch 61 is connected to the second terminal 103 of the first UPS 1, and a first terminal 401 of the load switch 61 is connected to the first terminal 104 of the first protection unit 3;

[0045] A voltage conversion module 62 , wherein a first terminal 402 of the voltage conversion module 62 is connected to a second terminal 403 of the load switch 61 ;

[0046] A power detection module 63, wherein a first end 404 of the power detection module 63 is connected to the second end 403 of the load switch 61 and the first end 402 of the voltage conversion module 62, a second end 405 of the power detection module 63 is connected to the second end 406 of the voltage conversion module 62, and a third end 407 of the power detection module 63 is connected to the communication board 5;

[0047] The load 64 has a first terminal 408 connected to the second terminal 402 of the voltage conversion module 62 and the second terminal 405 of the power detection module 63 .

[0048] For example, the power supply management system may not include a backflow prevention unit. Figure 3 As shown, the load unit 6 can be directly connected to the UPS and the protection unit. Specifically, the load unit 6 can include a load switch 61, a power detection module 63 and a voltage conversion module 62. When the anti-backflow unit is not included, the load switch 61 can be directly connected to the UPS and the protection unit, that is, the first end 401 of the load switch 61 can be directly connected to the second end 103 of the first UPS1 and the second end 105 of the second UPS2. The first end 401 of the load switch 61 can be directly connected to the first end 104 of the first protection unit 3 and the first end 106 of the second protection unit 4. For example, since the first end 104 of the first protection unit 3 can be the first end 213 of the first protection board switch 34, the first end 401 of the load switch 61 can be connected to the first end 213 of the first protection board switch 34. Similarly, when the first end 104 of the first protection unit 3 can be the first end 202 of the first protection board 32 or the first end 201 of the first battery group 31, the first end 401 of the load switch 61 can be directly connected to the first end 202 of the first protection board 32 or the first end 201 of the first battery group 31.

[0049] Furthermore, the power supply management system also includes:

[0050] A first backflow prevention unit 7, wherein a first end 409 of the first backflow prevention unit 7 is connected to the second end 103 of the first UPS 1 and the first end 104 of the first protection unit 3, and a second end 410 of the first backflow prevention unit 7 is connected to the first end 401 of the load switch 61;

[0051] The second backflow prevention unit 8 has a first end 411 connected to the second end 105 of the second UPS 2 and the first end 106 of the second protection unit 4 , and a second end 412 connected to the first end 401 of the load switch 61 .

[0052] In other words, the power supply management system may further include a backflow prevention unit, which may be used to prevent current backflow losses in the power supply management system. For example, the backflow prevention unit may be a diode. For example, the backflow prevention unit may be placed between the UPS and the load unit 6 to prevent current backflow from the load unit 6 and damage the UPS.

[0053] In the above-mentioned load unit 6, the load switch 61 can be used to switch the power supply management system from a no-load state to a loaded state, or from a loaded state to a no-load state, etc. For example, the first end 401 of the load switch 61 can be the first end 301 of the load unit 6. When the anti-backflow unit is not included, the load switch 61 can be directly connected to the UPS and the protection unit. When the anti-backflow unit is included, the load switch 61 can be connected to the anti-backflow unit. For example, the load switch 61 can be manually controlled or automatically switched, that is, the load switch 61 can be an automatic switch.

[0054] In the above-mentioned load unit 6, the voltage conversion module 62 can be used to transform the voltage provided by the UPS to obtain a stable voltage available to the load for supplying energy to the load.

[0055] In the above-mentioned load unit 6, the power detection module 63 can be used to detect the power of the voltage conversion module 62. The power detection module 63 can be connected in parallel with the voltage conversion module 62 to detect the power of the voltage conversion module 62. By detecting the power of the voltage conversion module, it can be determined whether the load is in normal working condition, which can indirectly reflect whether the UPS can normally provide power to the load, and can monitor the status of the power supply management system. For example, the power monitoring module can report the detection results to the communication board. For example, it can be connected to the communication board through the third end 407 of the power detection module 63 to report the detected power information to the communication board. For example, the connection method of the above-mentioned power detection module is only an example, and the specific connection method of the power detection module can be adjusted according to the actual circuit structure.

[0056] Furthermore, the power supply management system further includes: a host computer 9 , which is connected to the communication board 5 .

[0057] Specifically, the host computer 9 can communicate with the communication board 5 to obtain battery parameter information, power information, fault information, etc. from the communication board 5, so as to manage the power supply system and handle faults in a timely manner. For example, the host computer 9 and the communication board 5 can communicate using 232 communication method, etc., which is not limited by the present invention.

[0058] like Figure 5 , which is a schematic diagram of an example of a circuit structure of a power supply management system provided by the present invention.

[0059] like Figure 5 As shown, the power supply management system includes an adapter for connecting an external power supply to power the device, the positive poles of UPS1 and UPS2 can be connected to the adapter, and UPS1 and UPS2 are connected in parallel; both UPSs are connected to a battery pack, for example, UPS1 is connected to the battery pack BT1 Battery, and UPS2 is connected to the battery pack BT2 Battery; each battery pack can be connected in parallel to a protection board, such as the battery pack BT1 Battery is connected to the first protection board, and the first protection board includes a battery management system 1 (BMS1), which can be used to determine the state of the battery pack (SOC1) and can balance the current of each battery in the battery pack (balancing 1); similarly, the battery pack BT2 Battery is connected to the first protection board, and the first protection board includes a battery management system 2 (BMS2), which can be used to determine the state of the battery pack (SOC2) and can balance the current of each battery in the battery pack (balancing 2).

[0060] like Figure 5 As shown, the protection board switch can be used to switch the state of the protection board. For example, the first protection board switch can be represented as S1 (SW-SPST). The protection board can be connected to the communication board through the communication isolation module (8100) to report the battery parameter information collected by the protection board.

[0061] like Figure 5 As shown, the UPS can be connected to a diode, which can be used to prevent current backflow. After the two diodes are connected, they can be connected to the load switch S0. The voltage conversion module in this example is a 24V DC converter (DCDC-24). The two lines on both sides of the voltage conversion module can be used to detect the working power of the voltage conversion module. The working power after detection can be reported to the communication board. For example, the load is not shown in this structural diagram. Optionally, the load can be connected to the right side of the voltage conversion module, which is not limited by the present invention.

[0062] like Figure 5As shown, the communication board is connected to the host computer. The communication board can report the received battery parameter information and power information to the host computer so that the host computer can monitor the system and handle faults in a timely manner.

[0063] In summary, the power supply management system proposed in the present invention can be connected in parallel through multiple UPSs to jointly power the equipment when there is no external power supply. This can avoid problems such as equipment power outage and data loss caused by a single UPS system failure. It can increase the battery capacity, improve the battery life of the equipment, and improve the user experience.

Claims

1. A power supply management system, characterized in that: include: a first UPS and at least one second UPS, wherein a first end of the first UPS is connected to a first end of the second UPS, a second end of the first UPS is connected to a first end of a first protection unit, and a second end of the second UPS is connected to a first end of the second protection unit; The first protection unit and at least one of the second protection units, wherein the second ends of the first protection unit and the second protection unit are connected to the communication board; The communication board is connected to the second ends of the first protection unit and the second protection unit.

2. The power supply management system according to claim 1, characterized in that: The first protection unit includes: a first battery pack, wherein the first end of the first battery pack is connected to the second end of the first UPS; a first protection board, wherein the first end of the first protection board is connected to the first end of the first battery pack, and the second end of the first protection board is connected to the second end of the first battery pack; and a first communication isolation module, wherein the first end of the first communication isolation module is connected to the second end of the first battery pack and the second end of the first protection board, and the second end of the first communication isolation module is connected to the communication board.

3. The power supply management system according to claim 2, characterized in that: The second protection unit includes: a second battery pack, a first end of the second battery pack is connected to the second end of the second UPS; a second protection board, a first end of the second protection board is connected to the first end of the second battery pack, and a second end of the second protection board is connected to the second end of the second battery pack; a second communication isolation module, a first end of the second communication isolation module is connected to the second end of the second battery pack and the second end of the second protection board, and a second end of the second communication isolation module is connected to the communication board.

4. The power supply management system according to claim 3, characterized in that: The first protection unit further includes a first protection board switch, wherein a first end of the first protection board switch is connected to a second end of the first UPS, and a second end of the first protection board switch is connected to a first end of the first protection board and a first end of the first battery pack; The second protection unit further includes a second protection board switch, a first end of the second protection board switch is connected to the second end of the second UPS, and a second end of the second protection board switch is connected to the first end of the second protection board and the first end of the second battery pack.

5. The power supply management system according to claim 1, characterized in that: The power supply management system further includes: a load unit, wherein a first end of the load unit is connected to the second end of the first UPS, and a first end of the load unit is connected to the first end of the first protection unit; a first end of the load unit is connected to the second end of the second UPS, and a first end of the load unit is connected to the first end of the second protection unit; The second end of the load unit is connected to the communication board.

6. The power supply management system according to claim 5, characterized in that: The load unit comprises: a load switch, wherein a first end of the load switch is connected to the second end of the first UPS, and a first end of the load switch is connected to the first end of the first protection unit; a voltage conversion module, wherein a first terminal of the voltage conversion module is connected to a second terminal of the load switch; a power detection module, wherein a first end of the power detection module is connected to the second end of the load switch and the first end of the voltage conversion module, a second end of the power detection module is connected to the second end of the voltage conversion module, and a third end of the power detection module is connected to the communication board; A load, wherein a first end of the load is connected to the second end of the voltage conversion module and the second end of the power detection module.

7. The power supply management system according to claim 6, characterized in that: The power supply management system further includes: a first backflow prevention unit, wherein a first end of the first backflow prevention unit is connected to a second end of the first UPS and a first end of the first protection unit, and a second end of the first backflow prevention unit is connected to a first end of the load switch; A second backflow prevention unit, wherein a first end of the second backflow prevention unit is connected to a second end of the second UPS and a first end of the second protection unit, and a second end of the second backflow prevention unit is connected to a first end of the load switch.

8. The power supply management system according to claim 1, characterized in that: The power supply management system further includes: A host computer is connected to the communication board.

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