A power-parallel output current-sharing circuit, method and system thereof

Abstract

The application discloses a power supply parallel output current sharing circuit, method and system, and relates to the technical field of computers, which determines the number of redundant power supply modules to be executed according to the rated power of the redundant power supply modules and standby loads; when the number of executed modules is 1, the redundant power supply modules are connected to the constant current output circuit to supply power to the standby loads; when the number of executed modules is greater than 1, the constant current output circuit is used to perform current sharing processing on the standby loads according to the number of executed modules, and the corresponding redundant power supply modules are connected to supply power to the standby loads according to the output power. The technical problem that the standby power of the redundant power supply parallel machine cannot realize output current sharing and cannot effectively improve the high standby power consumption and the abnormal working of the whole machine is solved. The redundant power supply modules are selected according to the power consumption requirements of the standby loads, current sharing control is realized, the working state of the whole machine is ensured, the constant current circuit characteristics are used to ensure that the standby voltage is stable and does not drop when the server is converted from standby to normal system working.

Description

Technical Field

[0001] This invention relates to the field of computer technology, and in particular to a power supply parallel output current sharing circuit, method and system thereof. Background Technology

[0002] Rugged blade servers often experience high standby power consumption, which can approach or even exceed the maximum standby power consumption of a single power supply module. Since blade servers typically have a large number of blades, the theoretical standby power consumption of the entire system may exceed the power supply's standby output, potentially leading to malfunctions.

[0003] The overall power supply scheme uses redundant power supplies in parallel, but the standby power of the redundant power supplies in parallel cannot achieve output current sharing, and the output power of the redundant power supplies in parallel is still not improved, which cannot effectively improve the abnormal operation caused by high standby power consumption. Summary of the Invention

[0004] To address the aforementioned technical problems, this application provides a power supply parallel output current sharing circuit, method, and system to solve the technical problems in the prior art where redundant power supplies cannot achieve output current sharing in standby mode, and the output power of parallel voltage power supplies is not increased, thus failing to effectively improve the high standby power consumption and causing abnormal operation of the entire machine.

[0005] In view of the above problems, this application provides a power supply parallel output current sharing circuit, method and system thereof.

[0006] In a first aspect, this application provides a power supply parallel output current sharing circuit, which includes two or more power supply output current sharing combinations connected in parallel. The output terminal of the parallel power supply output current sharing combinations is connected to a standby load to supply power to the standby load. Each power supply output current sharing combination includes a redundant power supply module and a constant current output circuit. The output terminal of the redundant power supply module is connected to the input terminal of the constant current output circuit.

[0007] Preferably, all redundant power supply modules are rated power.

[0008] Preferably, the maximum output capability of the constant current output circuit is matched with the rated power of the redundant power supply module.

[0009] Secondly, this application provides a power supply parallel output current sharing method, the method comprising: obtaining a standby load; obtaining the rated power of a redundant power module; determining the number of redundant power modules to be executed based on the rated power of the redundant power module and the standby load; when the number of redundant power modules to be executed is 1, connecting the redundant power module through a constant current output circuit to supply power to the standby load; when the number of redundant power modules to be executed is greater than 1, performing current sharing processing on the standby load according to the number of constant current output circuits to be executed, determining the current sharing output load, and connecting the corresponding constant current output circuit according to the current sharing output load and the number of redundant power modules to be executed to supply power to the standby load.

[0010] Preferably, the number of redundant power modules to be executed is determined based on the rated power of the redundant power modules and the standby load, including: when the standby load is less than the rated power of a single redundant power module, the number of redundant power modules to be executed is 1; when the standby load is greater than the rated power of a single redundant power module and less than the sum of the rated power of two redundant power modules, the number of redundant power modules to be executed is 2; when the standby load is greater than the rated power of N redundant power modules and less than the sum of the rated power of N+1 redundant power modules, the number of redundant power modules to be executed is N+1, where N is a positive integer greater than 2.

[0011] Preferably, when the number of redundant power modules is 1, the step of connecting the redundant power modules through the constant current output circuit to supply power to the standby load includes: determining whether the output voltage of all constant current output circuits is the same; when the output voltage of the constant current output circuits is different, selecting the constant current output circuit with the highest output voltage to supply power to the subsequent load.

[0012] Thirdly, this application provides a power supply parallel output current sharing system, the system comprising: a standby load acquisition unit for acquiring a standby load; a redundant power supply acquisition unit for acquiring the rated power of a redundant power supply module; an execution quantity determination unit for determining the execution quantity of the redundant power supply module based on the rated power of the redundant power supply module and the standby load; a constant current execution unit for supplying power to the standby load by connecting the redundant power supply module through a constant current output circuit when the execution quantity of the redundant power supply module is 1; and a current sharing execution unit for performing current sharing processing on the standby load according to the execution quantity of the constant current output circuit through a constant current output circuit when the execution quantity of the redundant power supply module is greater than 1, determining the current sharing output load, and connecting the corresponding constant current output circuit according to the current sharing output load and the execution quantity of the redundant power supply module to supply power to the standby load.

[0013] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0014] 1. By connecting two or more power supply outputs in parallel for current sharing, and using a constant current output circuit to process the standby load for current sharing, the power required for the standby load to be effectively provided is ensured. This achieves the improvement of the parallel function of redundant power supplies, realizes output current sharing, and has the technical effect of simple structure and easy implementation.

[0015] 2. By obtaining the rated power of the redundant power modules; determining the number of redundant power modules to be executed based on the rated power of the redundant power modules and the standby load; when the number of redundant power modules to be executed is 1, the standby load is powered by the redundant power modules connected through the constant current output circuit; when the number of redundant power modules to be executed is greater than 1, the standby load is current-sharing processed according to the number of constant current output circuits to be executed, the current-sharing output load is determined, and the corresponding constant current output circuit is connected according to the current-sharing output load and the number of redundant power modules to be executed to power the standby load. This achieves the technical effect of selecting redundant power modules according to the power consumption requirements of the standby load, ensuring the power supply needs of the standby load, avoiding the theoretical value of standby power consumption from exceeding the standby power consumption output of the power supply, causing abnormal operation of the whole machine, and ensuring that the standby voltage remains stable and does not drop when the server switches from standby to normal system operation.

[0016] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0018] Figure 1 A schematic diagram of a power supply parallel output current sharing circuit provided in an embodiment of this application;

[0019] Figure 2 A flowchart illustrating a power supply parallel output current sharing method provided in an embodiment of this application;

[0020] Figure 3 This is a schematic diagram of a power supply parallel output current sharing system provided in an embodiment of this application.

[0021] Figure labeling: Redundant power supply module 10, constant current output circuit 20. Detailed Implementation

[0022] This application provides a power supply parallel output current sharing circuit, method and system, which solves the technical problems in the prior art where redundant power supplies cannot achieve output current sharing in standby mode, the output power is not increased when power supplies are paralleled, and the high standby power consumption cannot be effectively improved, resulting in abnormal operation of the whole machine.

[0023] The acquisition, storage, use, and processing of data in this application all comply with the relevant provisions of national laws and regulations.

[0024] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. It should be understood that this application is not limited to the exemplary embodiments described herein. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. It should also be noted that, for ease of description, only the parts related to this application are shown in the accompanying drawings, not all of them.

[0025] Example 1

[0026] Figure 1 This is a schematic diagram of a power supply parallel output current sharing circuit provided in an embodiment of this application, as shown below. Figure 1 As shown, the power supply parallel output current sharing circuit includes: two or more power supply output current sharing combinations, all of which are connected in parallel. The output terminal of the power supply output current sharing combinations after being connected in parallel is connected to the standby load to supply power to the standby load. Each power supply output current sharing combination includes a redundant power module 10 and a constant current output circuit 20. The output terminal of the redundant power module 10 is connected to the input terminal of the constant current output circuit 20.

[0027] Furthermore, all redundant power supply modules 10 are rated power.

[0028] Furthermore, the maximum output capability of the constant current output circuit 20 is matched with the rated power of the redundant power supply module 10.

[0029] Specifically, a constant current output circuit 20 is constructed using redundant power supply modules 10. At least two power output current sharing combinations are connected in parallel. The constant current output circuit 20 performs current sharing based on the standby load. The constant current characteristic of the constant current output circuit 20 is used to adjust the output power of the redundant power supply modules 10 to ensure a stable power supply to the standby load. The maximum output current of the constant current output circuit 20 can be set via hardware. When the power of the downstream load is lower than the maximum output capacity of the constant current output circuit 20, the output voltage remains stable. When the power of the downstream load exceeds the maximum output capacity of the constant current output circuit 20, the output current maintains its maximum output while the output voltage begins to drop, i.e., it enters constant current output mode. The maximum current setting of the constant current output circuit 20 is correlated with the maximum power of the redundant power supply modules 10. When the load exceeds the maximum power of the redundant power supply modules 10, i.e., the load exceeds the maximum capacity of the constant current output circuit 20, current sharing is applied to the load. If the load does not exceed the maximum capacity, constant current output is maintained, i.e., a stable output is achieved.

[0030] When the standby load exceeds the maximum power of the redundant power module 10, the constant current output circuit 20 distributes the power evenly according to the standby load, i.e., equalizes the current output. Power is supplied to the corresponding redundant power module 10 in the power output equalization combination, achieving the effect of parallel power enhancement of the redundant power modules 10. This differs from existing methods where two redundant power modules 10 connected in parallel do not increase power and cannot achieve the power superposition effect of two redundant power modules 10. For example, existing redundant power modules 10 all have an output power of 10W. When two redundant power modules 10 are connected in parallel, the load exceeds the limit, the voltage of the redundant power modules 10 begins to drop, and the output power remains at 10W, without any increase in output power. However, in this embodiment, the standby load is evenly distributed to the two redundant power modules 10, ensuring that each maintains an output power of 10W, thereby achieving a superimposed output power of 20W, effectively supporting the power consumption requirements of the standby load.

[0031] Figure 2 This is a flowchart illustrating a power supply parallel output current sharing method provided in an embodiment of this application. The method is applied to the power supply parallel output current sharing circuit, such as... Figure 2 As shown, the method includes:

[0032] S1: Obtain standby load;

[0033] Specifically, the power demand of the standby load is monitored in real time to obtain the required load power during standby. Based on the standby load's power requirements, the number of power supply output current sharing combinations is selected accordingly, and a parallel power supply output current sharing circuit is constructed to ensure effective power supply and maintain the standby load's power demand. For standby loads with a rated load, this can be achieved by technicians entering the rated standby load. The required number of power supply output current sharing combinations is then determined based on the rated standby load, and a parallel power supply output current sharing circuit is constructed accordingly.

[0034] S2: Obtain the rated power of the redundant power supply module;

[0035] Specifically, since the voltage and power of the redundant power supply module 10 corresponding to the blade server are rated and have a certain degree of standardization, standardization has the advantage of low procurement cost. Constructing a power supply parallel output current sharing circuit for the standardized redundant power supply module 10 has the technical effect of low cost and can effectively ensure stable power supply under high load conditions.

[0036] S3: Determine the number of redundant power modules to be executed based on the rated power of the redundant power modules and the standby load;

[0037] Furthermore, the number of redundant power modules to be executed is determined based on the rated power of the redundant power modules and the standby load, including: when the standby load is less than the rated power of a single redundant power module, the number of redundant power modules to be executed is 1; when the standby load is greater than the rated power of a single redundant power module and less than the sum of the rated power of two redundant power modules, the number of redundant power modules to be executed is 2; when the standby load is greater than the rated power of N redundant power modules and less than the sum of the rated power of N+1 redundant power modules, the number of redundant power modules to be executed is N+1, where N is a positive integer greater than 2.

[0038] Specifically, in a power supply parallel output current sharing circuit, the power supply output current sharing combination is usually set to two. However, in environments where the load power demand increases significantly, an unlimited number of power supply output current sharing combinations can be connected in parallel to ensure the needs of subsequent high-power loads. The number of power supply output current sharing combinations needed is determined based on the standby load requirements, and then the corresponding number of power supply output current sharing combinations are connected in parallel.

[0039] S4: When the number of redundant power modules is 1, the standby load is powered by the redundant power module through the constant current output circuit;

[0040] Furthermore, when the number of redundant power modules is 1, the step of connecting the redundant power modules through the constant current output circuit to supply power to the standby load includes: determining whether the output voltage of all constant current output circuits is the same; when the output voltage of the constant current output circuits is different, selecting the constant current output circuit with the highest output voltage to supply power to the subsequent load.

[0041] Specifically, when the standby load is lower than the power of a single redundant power module 10, one redundant power module 10 is selected for constant current power supply. Since the power supply parallel output current sharing circuit consists of at least two power supply output current sharing combinations connected in parallel, it includes at least two redundant power modules 10. One of the redundant power modules 10 is then connected for power supply, while the other constant current circuit, i.e., the other power supply output current sharing combination, remains unloaded. Although the constant current output circuits 20 output voltages are the same, due to the tolerance of the circuit components, some output voltages may deviate from the upper limit, while others may deviate from the lower limit. In this case, if the constant current output circuit 20 with the higher output voltage supplies power to the standby load, the constant current output circuit 20 with the higher output voltage is selected to supply power to the subsequent load.

[0042] S5: When the number of redundant power supply modules executed is greater than 1, the standby load is current-sharing processed according to the number of constant current output circuits executed by the constant current output circuit, the current-sharing output load is determined, and the corresponding constant current output circuit is connected to the standby load according to the current-sharing output load and the number of redundant power supply modules executed to supply power to the standby load.

[0043] Specifically, when the standby load exceeds the standby power of a single redundant power module 10, the two constant current circuits, i.e., the power output current sharing combination, supply power to the standby load in a current sharing state. When the standby load exceeds the rated power of a single redundant power module 10, the single power supply cannot provide an effective supply, but does not exceed the sum of the cumulative rated power of the two redundant power modules 10. In this case, it is necessary to supply power through the two redundant power modules 10. At this time, the constant current output circuit 20 distributes the standby load evenly to the two power output current sharing combinations, and uses their respective redundant power modules 10 to supply the corresponding load power to ensure the power requirements of the standby load.

[0044] When the standby load exceeds the standby power of two or more redundant power supplies, if the power supply parallel output current sharing circuit consists of two power supply output current sharing combinations connected in parallel, it cannot meet the load power requirements. In this case, the redundant power supply modules will trigger overcurrent protection. Therefore, it is necessary to increase the number of redundant power supplies and constant current circuits (i.e., the number of power supply output current sharing combinations) to ensure normal operation of the entire system. If the corresponding number of power supply output current sharing combinations has already been included, the power is still evenly distributed to the corresponding redundant power supply modules 10 according to the required number of redundant power supply modules to supply the corresponding load power. This achieves the current sharing function of the parallel redundant power supply standby power supplies. Even with a large number of blade servers, the blade server can still operate stably in standby mode. Simultaneously, it ensures that the standby voltage remains stable and does not drop when the server transitions from standby to normal system operation. This solves the technical problems in existing technologies where redundant power supply parallel standby power supplies cannot achieve output current sharing, and the output power of parallel power supply outputs does not increase, failing to effectively improve the high standby power consumption and causing abnormal operation of the entire system. It achieves the technical effect of selecting redundant power supply modules to meet the power consumption requirements of standby loads, ensuring the power supply needs of standby loads, avoiding the theoretical value of standby power consumption from exceeding the standby power output of the power supply, which would cause abnormal operation of the whole machine. At the same time, it can ensure that the standby voltage remains stable and does not drop when the server switches from standby to normal system operation.

[0045] In summary, the embodiments of this application have the following beneficial effects:

[0046] 1. By connecting two or more power supply outputs in parallel for current sharing, and using a constant current output circuit to process the standby load for current sharing, the power required for the standby load to be effectively provided is ensured. This achieves the improvement of the parallel function of redundant power supplies, realizes output current sharing, and has the technical effect of simple structure and easy implementation.

[0047] 2. By obtaining the rated power of the redundant power modules; determining the number of redundant power modules to be executed based on the rated power of the redundant power modules and the standby load; when the number of redundant power modules to be executed is 1, the standby load is powered by the redundant power modules connected through the constant current output circuit; when the number of redundant power modules to be executed is greater than 1, the standby load is current-sharing processed according to the number of constant current output circuits to be executed, the current-sharing output load is determined, and the corresponding constant current output circuit is connected according to the current-sharing output load and the number of redundant power modules to be executed to power the standby load. This achieves the technical effect of selecting redundant power modules according to the power consumption requirements of the standby load, ensuring the power supply needs of the standby load, avoiding the theoretical value of standby power consumption from exceeding the standby power consumption output of the power supply, causing abnormal operation of the whole machine, and ensuring that the standby voltage remains stable and does not drop when the server switches from standby to normal system operation.

[0048] Example 2

[0049] Based on the same inventive concept as the power supply parallel output current sharing method in the foregoing embodiments, such as Figure 3 As shown, this application also provides a power supply parallel output current sharing system, the system comprising:

[0050] Standby load acquisition unit, used to acquire standby load;

[0051] Redundant power acquisition unit, used to obtain the rated power of redundant power modules;

[0052] The execution quantity determination unit is used to determine the execution quantity of the redundant power modules based on the rated power of the redundant power modules and the standby load.

[0053] A constant current execution unit is used to supply power to the standby load by connecting to the redundant power module through a constant current output circuit when the number of executions of the redundant power module is 1.

[0054] The current sharing execution unit is used to perform current sharing processing on the standby load according to the number of executions of the constant current output circuit when the number of executions of the redundant power supply modules is greater than 1, determine the current sharing output load, and connect the corresponding constant current output circuit to supply power to the standby load according to the current sharing output load and the number of executions of the redundant power supply modules.

[0055] Furthermore, the execution quantity determination unit is also used to implement:

[0056] When the standby load is less than the rated power of a single redundant power module, the number of redundant power modules is 1.

[0057] When the standby load is greater than the rated power of a single redundant power module and less than the sum of the rated power of two redundant power modules, the number of redundant power modules is 2.

[0058] When the standby load is greater than the rated power of N redundant power modules and less than the sum of the rated power of N+1 redundant power modules, the number of redundant power modules is N+1, where N is a positive integer greater than 2.

[0059] Furthermore, the constant current execution unit is also used to implement:

[0060] Determine if the output voltages of all constant current output circuits are the same. If the output voltages of the constant current output circuits are different, select the constant current output circuit with the highest output voltage to power the subsequent load.

[0061] The power supply parallel output current sharing method and specific examples in Embodiment 1 described above are also applicable to the power supply parallel output current sharing system of this embodiment. Through the foregoing detailed description of the power supply parallel output current sharing method, those skilled in the art can clearly understand the power supply parallel output current sharing system of this embodiment; therefore, for the sake of brevity, it will not be described in detail here. As for the apparatus disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple; relevant details can be found in the method section.

[0062] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for current sharing in parallel power supply output, characterized in that, The method is applied to a power supply parallel output current sharing circuit, which includes: Two or more power output current sharing combinations are connected in parallel. The output terminal of the parallel power output current sharing combinations is connected to the standby load to supply power to the standby load. Each power output current sharing combination includes a redundant power module and a constant current output circuit. The output terminal of the redundant power module is connected to the input terminal of the constant current output circuit. The maximum output capability of the constant current output circuit is matched with the rated power of the redundant power supply module. The power supply parallel output current sharing method includes: Obtain standby load; Obtain the rated power of the redundant power supply module; The number of redundant power modules to be executed is determined based on the rated power of the redundant power modules and the standby load. When the number of redundant power modules is 1, the standby load is powered by the redundant power module connected through the constant current output circuit; When the number of redundant power modules executed is greater than 1, the standby load is current-sharing processed according to the number of constant current output circuits executed by the constant current output circuit, the current-sharing output load is determined, and the corresponding constant current output circuit is connected to the standby load according to the current-sharing output load and the number of redundant power modules executed to supply power to the standby load. The number of redundant power modules to be executed is determined based on the rated power of the redundant power modules and the standby load, including: When the standby load is less than the rated power of a single redundant power module, the number of redundant power modules is 1. When the standby load is greater than the rated power of a single redundant power module and less than the sum of the rated power of two redundant power modules, the number of redundant power modules is 2. When the standby load is greater than the rated power of N redundant power modules and less than the sum of the rated power of N+1 redundant power modules, the number of redundant power modules is N+1, where N is a positive integer greater than 2. When the number of redundant power modules is 1, the standby load is powered by the redundant power module connected through the constant current output circuit, including: Determine if the output voltages of all constant current output circuits are the same. If the output voltages of the constant current output circuits are different, select the constant current output circuit with the highest output voltage to power the subsequent load.

2. A power supply parallel output current sharing system, characterized in that, The system is used to implement the method of claim 1, and the system comprises: Standby load acquisition unit, used to acquire standby load; Redundant power acquisition unit, used to obtain the rated power of redundant power modules; The execution quantity determination unit is used to determine the execution quantity of the redundant power modules based on the rated power of the redundant power modules and the standby load. A constant current execution unit is used to supply power to the standby load by connecting to the redundant power module through a constant current output circuit when the number of executions of the redundant power module is 1. The current sharing execution unit is used to perform current sharing processing on the standby load according to the number of executions of the constant current output circuit when the number of executions of the redundant power supply modules is greater than 1, determine the current sharing output load, and connect the corresponding constant current output circuit to supply power to the standby load according to the current sharing output load and the number of executions of the redundant power supply modules.

Images