Server power supply system and working method thereof

Abstract

The invention belongs to the technical field of power distribution, and particularly relates to a power supply system, in particular to a server power supply system and a working method thereof, and the server power supply system comprises a control module and at least two power supply devices electrically connected with the control module; the power supply devices are electrically connected, and a plurality of calculation modules are connected to the power supply devices; the control module is suitable for calling the corresponding calculation module according to the calculation power demand, and the control module is suitable for controlling the corresponding power supply device to supply power to the called calculation module according to the power supply performance of each power supply device, so that the power supply device is in the optimal efficiency interval; the power supply device keeps the optimal efficiency interval to ensure the performance of the power supply device, ensures stable power supply of the calculation module, and avoids the influence of more heat generated by the power supply device due to load increase on the performance and the service life of the power supply device.

Description

Technical Field

[0001] The present invention belongs to the technical field of power distribution, and specifically relates to a power supply system, and in particular to a server power supply system and a working method thereof. Background Art

[0002] The power supply device of the server is connected to multiple computing modules, such as GPU. Each power supply device has an optimal efficiency range when designing the circuit. When the power output of the power supply device increases linearly within this range, the power consumption also increases linearly, and the temperature rise also increases linearly. When the power supply device of the server is in the optimal efficiency range, it is in the best performance, and its internal temperature will also be maintained in the appropriate range of the power supply device. If the load of the power supply device increases and causes the power supply device to exceed the optimal efficiency range, the performance of the power supply device will decline, and the temperature generated will increase, affecting the power supply efficiency of the power supply device, causing the performance of the computing module to decline.

[0003] Therefore, due to the technical problem that the power supply device exceeds the optimal efficiency range due to load changes in the power supply device, resulting in performance degradation, it is necessary to design a new server power supply system and its working method.

[0004] It should be noted that the above information disclosed in this background technology section is only used to understand the background technology of the present application concept, and therefore, the above description is not considered to constitute information of the prior art. Summary of the invention

[0005] The embodiments of the present disclosure at least provide a server power supply system and a working method thereof.

[0006] In a first aspect, an embodiment of the present disclosure provides a server power supply system, including: A control module, and at least two power supply devices electrically connected to the control module; The power supply devices are electrically connected to each other, and a plurality of computing modules are connected to the power supply devices; The control module is suitable for calling the corresponding computing module according to the computing power demand, and the control module is suitable for controlling the corresponding power supply device to supply power to the called computing module according to the power supply performance of each power supply device, so that the power supply device is in the optimal efficiency range.

[0007] In an optional implementation, the power supply device includes: a first processor, a second processor, a first power module, and a second power module; The first processor is electrically connected to the second processor; The first processor is electrically connected to the first power module; The second processor is electrically connected to the second power module; The first power module is electrically connected to the second power module; The first power module is connected to a plurality of expansion connectors, and the expansion connectors are suitable for connecting to a computing module; The second power module is connected to a plurality of expansion connectors, and the expansion connectors are suitable for connecting to the computing module; The first power module and the second power module are connected to an external power source to provide required voltages to the computing modules connected to them.

[0008] In an optional implementation, the power supply device further includes: a temperature detection module, a power detection module and a power consumption detection module; The temperature detection module, the power detection module and the power consumption detection module are all electrically connected to the first processor; The temperature detection module is suitable for detecting the temperature inside the power supply device; The power detection module is adapted to detect the output power of the first power module and the second power module; The power consumption detection module is suitable for detecting the power consumption of the first power module and the second power module.

[0009] In an optional implementation, the power supply devices are connected via cables, that is, the first power supply modules and the second power supply modules in all the power supply devices are connected via cables.

[0010] In an optional embodiment, the first processor is configured to obtain a first performance curve of the first power module in the power supply device and a second performance curve of the second power module according to the temperature inside the power supply device and the output power and power consumption of the first power module and the second power module at each temperature; The first processor is configured to obtain an optimal efficiency range of the first power module according to the first performance curve in real time, and to obtain an optimal efficiency range of the second power module according to the second performance curve.

[0011] In an optional implementation, the control module is configured to regulate the power supply of each power supply device according to whether the first power module and the second power module in each power supply device are within an optimal efficiency range.

[0012] In an optional implementation, the control module regulates each power supply device to supply power, that is, Each power supply device is numbered sequentially. When the control module controls the corresponding computing module to start working according to demand, the control module first obtains the first performance curve and the second performance curve corresponding to the first power module and / or the second power module connected to the computing module that has started working, so as to determine whether the first power module and / or the second power module connected to the computing module that has started working is in the optimal efficiency range.

[0013] In an optional implementation, when the first power module and / or the second power module connected to the computing module that starts working are both in the optimal efficiency range, the control module only controls the corresponding first power module and / or the second power module to supply power.

[0014] In an optional embodiment, when the first power supply module connected to the computing module that starts working exceeds its corresponding optimal efficiency range, if the second power supply module in the same power supply device is working and is in the optimal efficiency range at this time, the control module controls the second power supply module to supply energy to the first power supply module, so that the second power supply module remains in the optimal efficiency range while the first power supply module is reduced to the corresponding optimal efficiency range.

[0015] In an optional embodiment, when the first power supply module connected to the computing module that starts working exceeds its corresponding optimal efficiency range, if the second power supply module in the same power supply device is not working at this time, the control module controls the second power supply module to supply energy to the first power supply module, and reduces the first power supply module to the corresponding optimal efficiency range.

[0016] In an optional embodiment, when the first power module connected to the computing module that starts working exceeds its corresponding optimal efficiency range, if the second power module in the same power supply device is working and in the optimal efficiency range at this time, the control module controls the second power module to supply energy to the first power module. At this time, if the second power module reaches the upper limit of the optimal efficiency range but the first power module still exceeds its corresponding optimal efficiency range, the control module continues to control the first power module and / or second power module in the next numbered power supply device that is in the optimal efficiency range or not working, and supplies energy to the first power module that still exceeds its corresponding optimal efficiency range to make it drop to the optimal efficiency range, and the first power module and the second power module used in each power supply device are in their corresponding optimal efficiency range.

[0017] In a second aspect, the embodiment of the present disclosure further provides a working method using the above-mentioned server power supply system, including: The control module calls the corresponding computing module according to the computing power demand, and controls the corresponding power supply device to supply power to the called computing module according to the power supply performance of each power supply device, so that the power supply device is in the optimal efficiency range.

[0018] The beneficial effect of the present invention is that the server power supply system comprises: a control module, and at least two power supply devices electrically connected to the control module; the power supply devices are electrically connected, and a plurality of computing modules are connected to the power supply devices; the control module is suitable for calling the corresponding computing modules according to the computing power demand, and the control module is suitable for controlling the corresponding power supply devices to supply power to the called computing modules according to the power supply performance of each power supply device, so that the power supply devices are in the optimal efficiency range; the power supply devices are kept in the optimal efficiency range to ensure the performance of the power supply devices, ensure the stable power supply of the computing modules, and avoid the power supply devices generating more heat due to the increase in load, which affects the performance and service life of the power supply devices.

[0019] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.

[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, this article specifically cites preferred embodiments and provides detailed descriptions as follows in conjunction with the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A principle block diagram of a server power supply system provided in an embodiment of the present disclosure; Figure 2 A schematic diagram of a power supply device provided in an embodiment of the present disclosure; Figure 3 A schematic diagram of a power supply device provided in an embodiment of the present disclosure; Figure 4 A schematic diagram of power supply determination provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are 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 creative work are within the scope of protection of the present invention.

[0024] As used herein, the phrases "in one embodiment," "according to one embodiment," "in some embodiments," and the like generally refer to the fact that the particular feature, structure, or characteristic following the phrase may be included in at least one embodiment of the present disclosure. Therefore, a particular feature, structure, or characteristic may be included in more than one embodiment of the present disclosure, so that these phrases do not necessarily refer to the same embodiment. As used herein, the terms "example," "exemplary," and the like are used to "serve as an example, instance, or illustration." Any implementation, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. On the contrary, the use of the terms "example," "exemplary," and the like is intended to present concepts in a concrete manner.

[0025] After research, it was found that the disadvantages of the prior art are that multiple power supply devices are arranged in the server, and multiple computing modules are connected to the power supply devices. As the computing demand increases, the number of computing modules used in operation increases, and the load of the power supply device increases. As the load of the power supply device increases, its output power increases, power consumption increases, and the heat generated increases. If the load exceeds the optimal efficiency range of the power supply device, the performance of the power supply device will be reduced. The power supply device generates a large amount of heat, causing the internal temperature to exceed the preset range, which affects the performance of the power supply device and affects the service life of the power supply device. As the power supply device is used, it will gradually age, and when the power supply devices are stacked together, the heat generated by the power supply device will affect other power supply devices, causing the performance curve of the power supply device to change. If the power supply device is still judged as to whether it is in the optimal efficiency range based on the performance curve when the power supply device leaves the factory, errors will occur in the judgment, affecting the performance of the power supply device.

[0026] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0027] like Figure 1 As shown, in at least one disclosed embodiment, a server power supply system is provided, including: a control module, and at least two power supply devices electrically connected to the control module; the power supply devices are electrically connected to each other, and a plurality of computing modules are connected to the power supply devices; the control module is suitable for calling the corresponding computing modules according to the computing power demand, and the control module is suitable for controlling the corresponding power supply devices to supply power to the called computing modules according to the power supply performance of each power supply device, so that the power supply devices are in the optimal efficiency range; the power supply devices are maintained in the optimal efficiency range to ensure the performance of the power supply devices, ensure the stable power supply of the computing modules, and avoid the power supply devices generating more heat due to the increase in load, which affects the performance and service life of the power supply devices.

[0028] like Figure 2 and Figure 3 As shown, in an optional implementation, the power supply device includes: a first processor (CPU0), a second processor (CPU1), a first power module and a second power module; the first power module and the second power module can both adopt 88096 (PCIe4.0 Switch) chip; the first processor and the second processor can adopt Tengyun S5000C-32 processor; the first processor is electrically connected to the second processor; the first processor is electrically connected to the first power module; the second processor is electrically connected to the second power module; the first power module is electrically connected to the second power module; the first processor is connected to the first power module, the second processor is connected to the second power module, and the first power module is connected to the second power module, which can play a redundancy in the connection mode. When the power supply device is in use, the first processor can control the first power module and the second power module. If an abnormality occurs between the first processor and the first power module and causes disconnection, the second processor can be controlled at this time to avoid failure of the power supply device and the computing module connected to the power supply device; the first power module is connected to a plurality of expansion connectors, which are suitable for connecting to the computing module; the second power module is connected to a plurality of expansion connectors, which are suitable for connecting to the computing module; the first power module and the second power module are connected to an external power supply to provide the required voltage to the computing modules connected to them; the first processor can be electrically connected to a USB3.0 controller, a Gigabit network chip, a SATA3.0 controller chip, a BMC control module, and an integrated 8 DDR4 RDIMM slots; 8 Bi100 OAM artificial intelligence modules can also be integrated on the first processor.

[0029] The control module can be electrically connected to the first processor and the second processor; the processor and the power module can be connected through the MCIO port, and the first processor and the second processor can be set on the CPU board; the power board can provide an external power supply; the power module can provide a corresponding voltage to the computing module, There are three mainstream architectures for GPU topology: 1. Balance, which maximizes CPU utilization and provides larger uplink bandwidth. GPU P2P communication is limited by the UPI communication bottleneck between CPUs. It is suitable for scenarios such as HPC, VDI, public cloud, and HPC; 2. Common, remote GPU communication does not require cross-CPU communication, GPU P2P communication is better, and throughput is higher. It is suitable for P2P communication intensive training algorithm models with more CPU participation in tasks, such as Resnet101 / 50; 3. Cascade, switch cascading provides the strongest GPU peer-to-peer P2P communication, but the CPU to GPU throughput is small, which is suitable for P2P parameter-intensive training algorithm models with fewer CPU participation in tasks, such as VGG-16.

[0030] The power supply devices in the server are redundantly configured. When the server reaches the calibrated maximum load, there are still multiple power supply devices that are not in use, that is, there are still several computing modules that are not in use. The redundant power supply devices can be used as substitutes when some power supply devices malfunction. The redundantly configured power supply devices can also serve as other power supply devices, so that the first power supply module and the second power supply module in the power supply devices in use are both in the optimal efficiency range.

[0031] In an optional embodiment, the power supply device also includes: a temperature detection module, a power detection module and a power consumption detection module; the temperature detection module, the power detection module and the power consumption detection module are all electrically connected to the first processor; the temperature detection module is suitable for detecting the temperature inside the power supply device; the power detection module is suitable for detecting the output power of the first power supply module and the second power supply module; the power consumption detection module is suitable for detecting the power consumption of the first power supply module and the second power supply module; during the operation of the power supply device, the temperature inside the power supply device, as well as the output power and power consumption of the first power supply module, and the output power and power consumption of the second power supply module can be detected in real time, so as to facilitate real-time acquisition and update of the performance curves of the first power supply module and the second power supply module, so as to accurately determine the optimal efficiency range of the first power supply module and the second power supply module in real time.

[0032] In an optional implementation, the power supply devices are connected via cables, that is, the first power supply modules and the second power supply modules in all the power supply devices are connected via cables, thereby meeting the functional requirements of the power supply devices.

[0033] In an optional embodiment, the first processor is configured to obtain a first performance curve of the first power module in the power supply device and a second performance curve of the second power module according to the temperature inside the power supply device and the output power and power consumption of the first power module and the second power module at various temperatures; the first processor is configured to obtain the optimal efficiency range of the first power module according to the first performance curve in real time, and to obtain the optimal efficiency range of the second power module according to the second performance curve; the first performance curve and the second performance curve reflect the relationship between the output power and power consumption of the corresponding power modules and the temperature. With the increase in the aging degree of the first power module and the second power module, the corresponding first performance curve and the second performance curve will change. Therefore, it is necessary to update the first performance curve and the second performance curve in real time. When controlling each power supply device to supply power to the computing module, the control module needs to first update the first performance curve and the second performance curve to ensure the accurate control of the power supply device.

[0034] In an optional implementation, the control module is configured to regulate the power supply of each power supply device according to whether the first power module and the second power module in each power supply device are within an optimal efficiency range.

[0035] In an optional embodiment, the control module regulates each power supply device to supply power, that is, each power supply device is sequentially numbered, and when the control module controls the corresponding computing module to start working according to demand, the control module first obtains the first performance curve and the second performance curve corresponding to the first power module and / or the second power module connected to the computing module that has started working, so as to determine whether the first power module and / or the second power module connected to the computing module that has started working is in the optimal efficiency range; as long as one of the computing modules connected to the first power module is enabled, the first power module will be higher than the corresponding minimum value of the optimal efficiency range, and as long as one of the computing modules connected to the second power module is enabled, the second power module will be higher than the corresponding minimum value of the optimal efficiency range.

[0036] like Figure 4 As shown, in an optional embodiment, when the first power module and / or the second power module connected to the computing module that starts working are both in the optimal efficiency range, the control module only controls the corresponding first power module and / or the second power module to supply power; for example, the four computing modules connected to the first power module in power supply device No. 1 are all used, and the four computing modules connected to the second power module are also all used. At this time, the first power module is in the optimal efficiency range, and the second power module is in the optimal efficiency range. It is judged that at this time, the first power module and the second power module can each satisfy the corresponding computing module, and the control module does not need to call other power supply devices to supply power.

[0037] In an optional embodiment, when the first power module connected to the computing module that starts working exceeds its corresponding optimal efficiency interval, if the second power module in the same power supply device is working and in the optimal efficiency interval at this time, the control module controls the second power module to supply energy to the first power module, so that the second power module remains in the optimal efficiency interval while the first power module is lowered to the corresponding optimal efficiency interval; for example, the four computing modules connected to the first power module in power supply device No. 1 are all in use, and two of the four computing modules connected to the second power module have been enabled. At this time, the first power module exceeds its corresponding optimal efficiency interval, and the second power module is in its corresponding optimal efficiency interval. The maximum current size corresponding to the optimal efficiency interval of the first power module is 2A. At this time, the current size of the first power module is 3A, and the current size of the second power module is 1A. The second power module provides 1A current to the first power module, so that the first power module provides 2A current while receiving 1A current provided by the second power module, which meets the load demand of the first power module at this time, and also meets the first power module is in the optimal efficiency interval at this time. The second power module is still in the optimal efficiency interval after providing 1A current.

[0038] In an optional embodiment, when the first power module connected to the computing module that starts working exceeds its corresponding optimal efficiency range, if the second power module in the same power supply device is not working at this time, the control module controls the second power module to supply energy to the first power module, and reduces the first power module to the corresponding optimal efficiency range; for example, the four computing modules connected to the first power module in power supply device No. 1 are all in use, and the four computing modules connected to the second power module are not in use. At this time, the first power module exceeds its corresponding optimal efficiency range, and the second power module is not in use. The maximum current size corresponding to the optimal efficiency range of the first power module is 2A, and the current size of the first power module is 3A at this time. The second power module provides 1A current to the first power module, so that the first power module provides 2A current while receiving 1A current provided by the second power module, which meets the load demand of the first power module at this time, and also meets the first power module is in the optimal efficiency range at this time, and the second power module is in the optimal efficiency range after providing 1A current.

[0039] In an optional embodiment, when the first power module connected to the computing module that starts working exceeds its corresponding optimal efficiency interval, if the second power module in the same power supply device is working and in the optimal efficiency interval at this time, the control module controls the second power module to supply energy to the first power module. At this time, if the second power module reaches the upper limit of the optimal efficiency interval but the first power module still exceeds its corresponding optimal efficiency interval, the control module continues to control the first power module and / or the second power module in the next numbered power supply device that is in the optimal efficiency interval or not working, and supplies energy to the first power module that still exceeds its corresponding optimal efficiency interval, so that it drops to the optimal efficiency interval, and the first power module and the second power module used in each power supply device are in their corresponding optimal efficiency intervals; For example, the four computing modules connected to the first power module in power supply device No. 1 are all in use, and the four computing modules connected to the second power module are also in use. At this time, the first power module exceeds its corresponding optimal efficiency range, and the second power module is in its corresponding optimal efficiency range. The maximum current size corresponding to the optimal efficiency range of the first power module is 2A. At this time, the current size of the first power module is 3A, and the current size of the second power module is 2A. The maximum current size corresponding to its optimal efficiency range is 2A. The second power module provides current to the first power module, which will cause the second power module to exceed its corresponding efficiency range. Therefore, the second power module of power supply device No. 1 cannot provide current to the first power module. At this time, it is determined whether the first power module in power supply device No. 2 can provide current to the first power module in power supply device No. 1. If it can, 1A current is provided through the first power module in power supply device No. 2. If not, it is continued to be determined whether the second power module in power supply device No. 2 can provide current. Each power supply device is determined in turn until the first power module and the second power module in each power supply device in use are in the optimal efficiency range.

[0040] At least one other disclosed embodiment also provides a working method using the above-mentioned server power supply system, including: the control module calls the corresponding computing module according to the computing power demand, and the control module controls the corresponding power supply device to supply power to the called computing module according to the power supply performance of each power supply device, so that the power supply device is in the optimal efficiency range.

[0041] In summary, the server power supply system includes: a control module, and at least two power supply devices electrically connected to the control module; the power supply devices are electrically connected, and a number of computing modules are connected to the power supply devices; the control module is suitable for calling the corresponding computing modules according to the computing power requirements, and the control module is suitable for controlling the corresponding power supply devices to supply power to the called computing modules according to the power supply performance of each power supply device, so that the power supply devices are in the optimal efficiency range; the power supply devices are maintained in the optimal efficiency range to ensure the performance of the power supply devices, ensure the stable power supply of the computing modules, and avoid the power supply devices generating more heat due to the increase in load, which affects the performance and service life of the power supply devices.

[0042] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A server power supply system, characterized in that: include: A control module, and at least two power supply devices electrically connected to the control module; The power supply devices are electrically connected to each other, and a plurality of computing modules are connected to the power supply devices; The control module is suitable for calling the corresponding computing module according to the computing power demand, and the control module is suitable for controlling the corresponding power supply device to supply power to the called computing module according to the power supply performance of each power supply device, so that the power supply device is in the optimal efficiency range.

2. The server power supply system according to claim 1, wherein: The power supply device comprises: a first processor, a second processor, a first power supply module and a second power supply module; The first processor is electrically connected to the second processor; The first processor is electrically connected to the first power module; The second processor is electrically connected to the second power module; The first power module is electrically connected to the second power module; The first power module is connected to a plurality of expansion connectors, and the expansion connectors are suitable for connecting to a computing module; The second power module is connected to a plurality of expansion connectors, and the expansion connectors are suitable for connecting to the computing module; The first power module and the second power module are connected to an external power source to provide required voltages to the computing modules connected to them.

3. The server power supply system according to claim 2, wherein: The power supply device also includes: a temperature detection module, a power detection module and a power consumption detection module; The temperature detection module, the power detection module and the power consumption detection module are all electrically connected to the first processor; The temperature detection module is suitable for detecting the temperature inside the power supply device; The power detection module is adapted to detect the output power of the first power module and the second power module; The power consumption detection module is suitable for detecting the power consumption of the first power module and the second power module.

4. The server power supply system according to claim 1, wherein: The power supply devices are connected to each other via cables, that is, the first power supply modules and the second power supply modules in all the power supply devices are connected via cables.

5. The server power supply system according to claim 3, wherein: The first processor is configured to obtain a first performance curve of the first power module in the power supply device and a second performance curve of the second power module according to the temperature inside the power supply device and the output power and power consumption of the first power module and the second power module at each temperature; The first processor is configured to obtain an optimal efficiency range of the first power module according to the first performance curve in real time, and to obtain an optimal efficiency range of the second power module according to the second performance curve.

6. The server power supply system according to claim 5, characterized in that: The control module is configured to regulate the power supply of each power supply device according to whether the first power supply module and the second power supply module in each power supply device are within the optimal efficiency range.

7. The server power supply system according to claim 6, characterized in that: The control module regulates each power supply device to supply power, that is, Each power supply device is numbered sequentially. When the control module controls the corresponding computing module to start working according to demand, the control module first obtains the first performance curve and the second performance curve corresponding to the first power module and / or the second power module connected to the computing module that has started working, so as to determine whether the first power module and / or the second power module connected to the computing module that has started working is in the optimal efficiency range.

8. The server power supply system according to claim 7, wherein: When the first power module and / or the second power module connected to the working computing module are both in the optimal efficiency range, the control module only controls the corresponding first power module and / or the second power module to supply power.

9. The server power supply system according to claim 7, wherein: When the first power module connected to the computing module that starts working exceeds its corresponding optimal efficiency range, if the second power module in the same power supply device is working and in the optimal efficiency range at this time, the control module controls the second power module to supply energy to the first power module, so that the second power module remains in the optimal efficiency range while the first power module is reduced to the corresponding optimal efficiency range.

10. The server power supply system according to claim 7, wherein: When the first power module connected to the computing module that starts working exceeds its corresponding optimal efficiency range, if the second power module in the same power supply device is not working at this time, the control module controls the second power module to supply energy to the first power module, and reduces the first power module to the corresponding optimal efficiency range.

11. The server power supply system according to claim 7, wherein: When the first power module connected to the computing module that starts working exceeds its corresponding optimal efficiency range, if the second power module in the same power supply device is working and in the optimal efficiency range at this time, the control module controls the second power module to supply energy to the first power module. At this time, if the second power module reaches the upper limit of the optimal efficiency range but the first power module still exceeds its corresponding optimal efficiency range, the control module continues to control the first power module and / or second power module in the next numbered power supply device that is in the optimal efficiency range or not working, and supplies energy to the first power module that still exceeds its corresponding optimal efficiency range to make it drop to the optimal efficiency range, and the first power module and the second power module used in each power supply device are in their corresponding optimal efficiency range.

12. A working method using the server power supply system according to claim 1, characterized in that: include: The control module calls the corresponding computing module according to the computing power demand, and controls the corresponding power supply device to supply power to the called computing module according to the power supply performance of each power supply device, so that the power supply device is in the optimal efficiency range.

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