A power supply control method, system, and power supply topology

Abstract

This application relates to a power supply control method, system, and power supply topology, belonging to the technical field of power supply. The method includes: acquiring the output power of each power module in real time, with at least two external power modules connected; determining whether the output power of each external power module is less than a preset first output power threshold; if so, the external power module with an output power less than the first external output power threshold is a light-load power module; summing the external output power of all external light-load power modules to obtain the total output power; calculating the required number of external light-load power modules based on the total external output power, and classifying the external light-load power modules into power modules to be turned off and power modules to be kept active; connecting the output terminal of the external power module to be turned off to the output terminal of the external power module to be kept active; and disconnecting the power supply to the external power module to be turned off. This application improves the utilization rate of the power supply.

Description

Technical Field

[0001] This application relates to the technical field of power supply, and in particular to a power supply control method, system and power supply topology. Background Technology

[0002] Currently, large, high-density chassis typically have a large number of circuit board slots. For power supply safety, a zoned power supply method is generally adopted, with each zone having an AC-DC power supply connected to a certain number of circuit board slots to supply power to a fixed number of circuit boards.

[0003] Regarding the aforementioned technologies, the inventors discovered that when a partition's card slots are not fully populated with cards, or when the cards are in a low-power operating state, the power utilization of that partition is low. When other partitions also have the same situation, the power utilization of the entire chassis is low. Summary of the Invention

[0004] To improve the power utilization of the chassis, this application provides a power supply control method, system, and power supply topology.

[0005] Firstly, this application provides a power supply control method, which adopts the following technical solution:

[0006] A power supply control method, comprising:

[0007] The output power of each power module is acquired in real time, and there are at least two power modules;

[0008] Determine whether the output power of each power module is less than a preset first output power threshold. If so, the power module whose output power is less than the first output power threshold is a light-load power module.

[0009] The total output power is obtained by summing the output power of all the light-load power modules.

[0010] Based on the total output power, the required number of the light-load power modules is calculated, and the light-load power modules are divided into power modules to be turned off and power modules to be kept on.

[0011] Connect the output terminal of the power module to be turned off to the output terminal of the power module to be kept on; disconnect the power supply to the power module to be turned off; the power module to be kept on provides power to its corresponding internal load and the external load corresponding to the power module to be turned off.

[0012] By adopting the above technical solution, after acquiring the output power of each power module in real time, it is determined whether the power module is a light-load power module. The output power of all light-load power modules is summed. While meeting the output power requirements, the light-load power modules are divided into power modules to be shut down and power modules to be kept active. Then, the output terminal of the power module to be shut down is connected to the output terminal of the power module to be kept active. The power module to be shut down is then disconnected from the power supply, thereby dynamically adjusting the output power of multiple power modules. When a power module is a light-load power module, it can be connected to the load of other partitions and simultaneously supply power to both the internal and external loads to increase the output power of the light-load power module, thereby improving the utilization rate of the power supply.

[0013] Optionally, the step of calculating the required number of power modules based on the total output power, and dividing the light-load power modules into power modules to be turned off and power modules to be kept on, includes:

[0014] Based on the first preset formula: The required quantity is calculated; where N is the required quantity, and P... ∑ P is the total output power. e This refers to the rated output power of the power module;

[0015] The light-load power modules are arranged in descending order of output power. The first N light-load power modules corresponding to the output power are the power modules that are kept enabled, and the remaining light-load power modules are the power modules that are to be turned off.

[0016] Optionally, connecting the output terminal of the power module to be turned off to the output terminal of the power module that remains enabled, and disconnecting the power supply to the power module to be turned off, includes:

[0017] Based on the second preset calculation formula: The remaining power of each of the power modules that remain enabled is calculated; where P1 is the current first output power of the power module that remains enabled. The remaining power;

[0018] All the power modules that remain enabled are sorted in descending order of their remaining power to obtain a first sorting table; all the power modules that are to be turned off are sorted in ascending order of their current second output power to obtain a second sorting table.

[0019] Determine whether the sum of the remaining power of the first i items in the first sorting table is greater than or equal to the second output power of the first item in the second sorting table. The initial value of i is 1. If yes, connect the output terminal of the power module that keeps enabled in the first i items of the first sorting table to the output terminal of the power module that is to be turned off in the first item of the second sorting table, and disconnect the power supply to the power module that is to be turned off in the first item of the second sorting table. If no, iterate i to i+1 and continue to determine whether the sum of the remaining power of the first i items in the first sorting table is greater than or equal to the second output power of the first item in the second sorting table.

[0020] Optional, also includes:

[0021] Determine whether the power module to be turned off in the first item of the second sorting table is disconnected from power. If so, update the first sorting table and the second sorting table, and reset i to its initial value.

[0022] Optional, also includes:

[0023] Determine whether the output power of each power module is greater than a preset second output power threshold. If so, the power module whose output power is greater than the second output power threshold is an overload power module.

[0024] Obtain the external load information on the overload power module;

[0025] Based on the external load information, enable the power supply module that is disabled corresponding to the external load information;

[0026] Determine whether the power supply module is enabled. If so, disconnect the output terminal of the power supply module from the output terminal of the overload power supply module.

[0027] Secondly, this application provides a power supply control system, which adopts the following technical solution:

[0028] A power supply control system, comprising:

[0029] An output power acquisition module is used to acquire the output power of each power module in real time, wherein there are at least two power modules;

[0030] The first judgment module is used to determine whether the output power of each power module is less than a preset first output power threshold. If it is less, the power module whose output power is less than the first output power threshold is a light-load power module.

[0031] The processing module is used to sum the output power of all the light-load power modules to obtain the total output power; and based on the total output power, calculate the required number of the light-load power modules, and divide the light-load power modules into power modules to be turned off and power modules to be kept on.

[0032] The control module is used to connect the output terminal of the power module to be turned off to the output terminal of the power module to be kept on; to disconnect the power supply to the power module to be turned off; and for the power module to be kept on to supply power to its corresponding internal load and the external load corresponding to the power module to be turned off.

[0033] By adopting the above technical solution, after the output power acquisition module acquires the output power of each power module in real time, the first judgment module determines whether the power module is a light-load power module. The calculation and processing module sums the output power of all light-load power modules. While meeting the output power requirements, the light-load power modules are divided into power modules to be shut down and power modules to be kept active. After the control module connects the output terminal of the power module to be shut down to the output terminal of the power module to be kept active, it controls the power module to be shut down to disconnect the power supply, thereby dynamically adjusting the output power of multiple power modules. When a power module is a light-load power module, it can be connected to the load of other partitions and supply power to both the internal and external loads at the same time, thereby increasing the output power of the light-load power module and improving the utilization rate of the power supply.

[0034] Optionally, the computation processing module includes:

[0035] The first calculation unit is used to perform calculations based on a first preset formula: The required quantity is calculated; where N is the required quantity, and P... ∑ P is the total output power. e This refers to the rated output power of the power module;

[0036] The classification processing unit is used to sort the light-load power modules in descending order of output power. The first N light-load power modules corresponding to the output power are the power modules that are kept enabled, and the remaining light-load power modules are the power modules that are to be turned off.

[0037] Optionally, the control module includes:

[0038] The second calculation unit is used to calculate based on the second preset formula: The remaining power of each of the power modules that remain enabled is calculated; where P1 is the current first output power of the power module that remains enabled. The remaining power;

[0039] The sorting unit is used to sort all the power modules that remain enabled in descending order of their respective remaining power to obtain a first sorting table; and to sort all the power modules that are to be turned off in ascending order of their respective current second output power to obtain a second sorting table.

[0040] The first judgment unit is used to determine whether the sum of the remaining power of the first i items of the first sorting table is greater than or equal to the second output power of the first item of the second sorting table. The initial value of i is one. If yes, the output terminal of the power module that keeps enabled in the first i items of the first sorting table is connected to the output terminal of the power module that is to be turned off in the first item of the second sorting table, and the power module that is to be turned off in the first item of the second sorting table is disconnected from power supply. If no, i is iterated to i+1, and the judgment unit continues to determine whether the sum of the remaining power of the first i items of the first sorting table is greater than or equal to the second output power of the first item of the second sorting table.

[0041] The second judgment unit is used to determine whether the power module to be turned off in the first item of the second sorting table is disconnected from the power supply. If so, the first sorting table and the second sorting table are updated, and i is reset to the initial value.

[0042] Optional, also includes:

[0043] The second judgment module is used to determine whether the output power of each power module is greater than a preset second output power threshold. If so, the power module whose output power is greater than the second output power threshold is an overload power module.

[0044] An external load information acquisition module is used to acquire external load information on the overload power supply module;

[0045] A power activation module is used to activate a power deactivation module corresponding to the external load information based on the external load information.

[0046] The third judgment module is used to determine whether the power supply module is enabled. If it is enabled, the output terminal of the power supply module is disconnected from the output terminal of the overload power supply module.

[0047] Thirdly, this application provides a power supply topology, which adopts the following technical solution:

[0048] A power supply topology, comprising:

[0049] Power modules, wherein there are at least two power modules;

[0050] Load slots are connected to the power modules and are configured in a one-to-one correspondence with the power modules;

[0051] A connection switch is used to connect the output terminals of any two of the power modules.

[0052] The controller is connected to the communication switch and the power module respectively, and is used to control the connection switch to turn on / off and to control the power module to enable / disable power supply. When the controller is running, it executes any of the methods described in the first aspect above.

[0053] In summary, this application includes at least the following beneficial effects:

[0054] After acquiring the output power of each power module in real time, it is determined whether the power module is a light-load power module. The output power of all light-load power modules is summed. While meeting the output power requirements, the light-load power modules are divided into power modules to be shut down and power modules to be kept active. Then, the output terminal of the power module to be shut down is connected to the output terminal of the power module to be kept active. The power module to be shut down is then disconnected from the power supply, thereby dynamically adjusting the output power of multiple power modules. When a power module is a light-load power module, it can be connected to the load of other partitions and simultaneously supply power to the internal and external loads to increase the output power of the light-load power module, thereby improving the utilization rate of the power supply. Attached Figure Description

[0055] Figure 1 This is a flowchart illustrating one embodiment of the power supply method of this application;

[0056] Figure 2 This is a flowchart illustrating one specific implementation of step S400 of this application;

[0057] Figure 3 This is a flowchart illustrating one specific implementation of step S500 of this application;

[0058] Figure 4 This is a flowchart illustrating a further embodiment of the power supply method of this application;

[0059] Figure 5 This is a structural block diagram of one embodiment of the power supply system of this application;

[0060] Figure 6 This is a structural block diagram of one embodiment of the power supply topology of this application.

[0061] Explanation of reference numerals in the attached diagram: 1. Controller; 11. Output power acquisition module; 12. First judgment module; 13. Calculation and processing module; 131. First calculation unit; 132. Classification and processing unit; 14. Control module; 141. Second calculation unit; 142. Sorting unit; 143. First judgment unit; 144. Second judgment unit; 15. Second judgment module; 16. External load information acquisition module; 17. Power activation module; 18. Third judgment module; 2. Power module; 3. Load slot; 4. Interconnection switch. Detailed Implementation

[0062] To make the objectives, technical solutions, and advantages of this invention clearer, the following description is provided in conjunction with the appendix. Figure 1-6 The present invention will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0063] This application provides a power supply control method.

[0064] As attached Figure 1 As shown, a power supply control method includes:

[0065] S100, which obtains the output power of each power module in real time;

[0066] Specifically, there are at least two power supply modules, each connected to a certain number of board slots. The more boards inserted into the slots, i.e., the more load on the power supply module, the greater its output power. The output power of the power supply module can be calculated using the power calculation formula by sampling the output current and output voltage at the power supply module's output terminals.

[0067] S200, determine whether the output power of each power module is less than the preset first output power threshold. If so, the power module whose output power is less than the first output power threshold is a light-load power module.

[0068] Specifically, the first output power threshold is set by the staff based on historical experience. For example, for a power module with a rated output power of 1000W, the first output power threshold can be set to 900W. Power modules with an output power of less than 900W are light-load power modules.

[0069] S300 sums up the output power of all light-load power modules to obtain the total output power;

[0070] Specifically, the total output power is obtained by adding up the output power of all light-load power modules.

[0071] S400 calculates the required number of light-load power modules based on the total output power and divides the light-load power modules into power modules to be turned off and power modules to be kept on.

[0072] For details, see attached. Figure 2 As shown, step S400 specifically includes sub-steps S410-S420:

[0073] S410, based on the first preset formula: Calculate the required quantity;

[0074] Specifically, N represents the quantity demanded, and P... ∑ For the total output power, P e The rated output power of the power supply module is used as the basis for calculation. The total output power is divided by the rated output power, and the integer part is added to the result. This yields the required quantity of power supply modules, ensuring that the power supply modules can meet the load's output power requirements when the number of power supply modules equals the required quantity.

[0075] S420 arranges the light-load power modules in descending order of output power. The first N light-load power modules corresponding to the output power are kept active, and the remaining light-load power modules are to be turned off.

[0076] Specifically, based on the calculated demand quantity N, N light-load power modules are selected. These modules are then arranged in descending order of output power, with the first N modules kept active. The remaining modules are designated as power modules to be shut down. Alternatively, in other real-time modes, the light-load power modules can be arranged in ascending order of output power.

[0077] S500: Connect the output terminal of the power module to be turned off to the output terminal of the power module that is kept enabled; disconnect the power supply to the power module to be turned off.

[0078] Specifically, the enabled power module supplies power to the internal loads of its corresponding partition and the external loads of the power modules to be disabled in other partitions, as shown in the attached diagram. Figure 3 As shown, step S500 specifically includes sub-steps S510-S520:

[0079] S510, based on the second preset calculation formula: Calculate the remaining power of each power module that remains enabled;

[0080] Specifically, P1 is used to maintain the current first output power of the power module. The remaining power is calculated to determine the maximum amount of power that can be increased while keeping the power module enabled.

[0081] S520: Sort all power modules that remain enabled in descending order of their remaining power to obtain a first sorting table; Sort all power modules that are to be turned off in ascending order of their current second output power to obtain a second sorting table;

[0082] Specifically, the first sorting table includes the power modules that remain enabled, the remaining power of the power modules that remain enabled, and the sorting number of the power modules that remain enabled; the second sorting table includes the power modules that need to be turned off, the second output power of the power modules that need to be turned off, and the sorting number of the power modules that need to be turned off.

[0083] S530, determine whether the sum of the remaining power of the first i items in the first sorting table is greater than or equal to the second output power of the first item in the second sorting table. The initial value of i is one. If yes, connect the output terminal of the power module that keeps enabled in the first i items of the first sorting table to the output terminal of the power module that is to be turned off in the first item of the second sorting table, and disconnect the power supply to the power module that is to be turned off in the first item of the second sorting table. If no, iterate i to i+1 and continue to determine whether the sum of the remaining power of the first i items in the first sorting table is greater than or equal to the second output power of the first item in the second sorting table.

[0084] Specifically, if the remaining power of the first item in the first sorting table is 500W and the second output power of the first item in the second sorting table is 300W, then connect the output terminal of the power module that keeps enabled in the first item of the first sorting table to the output terminal of the power module that is to be turned off in the first item of the second sorting table, and disconnect the power supply to the power module that is to be turned off in the first item of the second sorting table; if the remaining power of the first item in the first sorting table is 400W and the second output power of the first item in the second sorting table is 600W, then add the remaining power of the first item in the first sorting table and the remaining power of the second item in the first sorting table. If the sum is 800W, then connect the output terminals of the power modules that keep enabled in the first and second items of the first sorting table to the output terminal of the power module that is to be turned off in the first item of the second sorting table, and then disconnect the power supply to the power module that is to be turned off in the first item of the second sorting table.

[0085] S540, determine whether the power supply module to be turned off in the first item of the second sorting table is disconnected. If so, update the first sorting table and the second sorting table, and reset i to the initial value.

[0086] Specifically, after the power supply to the power module to be turned off in the first item of the second sorting table is disconnected, the disconnected power module to be turned off is removed from the second sorting table; the output power of the power module to be kept active increases while the remaining power decreases. When the output power increases to a level greater than the first output power threshold, the power module to be kept active is removed from the first sorting table, or the sorting number of the power module to be kept active in the first sorting table is changed due to the decrease in remaining power.

[0087] After step S540 is completed, return to step S530 until all power modules to be shut down are removed from the second sorting list.

[0088] As attached Figure 4 As shown, as a further embodiment of the power supply method, it also includes:

[0089] S600: Determine whether the output power of each power module is greater than the preset second output power threshold. If so, the power module whose output power is greater than the second output power threshold is an overload power module.

[0090] Specifically, if a power module supplies power to both an internal and an external load simultaneously, the output power of the power module will increase as the internal or external load increases. When the output power of the power module increases to a level greater than the second output power threshold, the power module is considered an overloaded power module. Similarly, the second output power threshold is set by the staff based on historical experience. For example, for a power module with a rated output power of 1000W, the second output power threshold can be set to 1050W. Power modules with an output power less than 1050W are considered overloaded power modules.

[0091] S700, obtains external load information on the overload power module;

[0092] Specifically, external load information can be obtained from the interconnection switches connected to the overload power module. For example, the first power module is connected to interconnection switches SW12-SW1N respectively. When the first power module is an overload power module, if interconnection switch SW13 is on, the first power module will also supply power to the load of the third zone.

[0093] S800 enables the power supply module that is disabled based on the external load information.

[0094] Specifically, the external load information includes the partition where the external load is located, and the corresponding deactivated power module of that partition. The load of the partition where the deactivated power module is located is connected to other power modules. The power modules are disconnected from power. When the output load of other power modules increases to a level greater than the second output power threshold, the deactivated power module is activated to prevent other power modules from burning out.

[0095] S900 determines whether the power supply module is enabled. If so, the output terminal of the power supply module is disconnected from the output terminal of the overload power supply module.

[0096] In this embodiment, by dynamically adjusting the output power of multiple power modules, when a light-load power module has surplus power, it can connect to the load of other partitions and supply power to both the internal and external loads, thereby increasing the output power of the light-load power module and improving the utilization rate of the power supply.

[0097] This application provides a power supply control system.

[0098] As attached Figure 5 As shown, a power supply control system includes:

[0099] The output power acquisition module 11 is used to acquire the output power of each power module 2 in real time. There are at least two power modules 2.

[0100] The first judgment module 12 is used to determine whether the output power of each power module 2 is less than the preset first output power threshold. If it is less, the power module 2 with the output power less than the first output power threshold is a light-load power module 2.

[0101] The calculation and processing module 13 is used to sum the output power of all light-load power modules 2 to obtain the total output power; and based on the total output power, calculate the required number of light-load power modules 2, and divide the light-load power modules 2 into power modules to be turned off and power modules to be kept on.

[0102] The control module 14 is used to connect the output terminal of the power module 2 to be turned off to the output terminal of the power module 2 to be kept on; to disconnect the power supply to the power module 2 to be turned off; and to keep the power module 2 on power to supply its corresponding internal load and the corresponding external load of the power module 2 to be turned off.

[0103] In this embodiment, after the output power acquisition module 11 acquires the output power of each of the power modules 2 in real time, the first judgment module 12 determines whether the power module 2 is a light-load power module 2. The calculation and processing module 13 sums the output power of all light-load power modules 2. While meeting the output power requirements, the light-load power modules 2 are divided into power modules to be turned off and power modules to be kept active. After the control module 14 connects the output terminal of the power module to be turned off to the output terminal of the power module to be kept active, it controls the power module to be turned off to disconnect the power supply, thereby dynamically adjusting the output power of multiple power modules 2. When a power module 2 has residual power, the power module 2 can be connected to the load of other partitions and supply power to both the internal and external loads at the same time, thereby improving the utilization rate of the power supply.

[0104] As one embodiment of the arithmetic processing module 13, the arithmetic processing module 13 includes:

[0105] The first arithmetic unit 131 is used to perform calculations based on a first preset formula: Calculate the required quantity; where N is the required quantity and P is the quantity required. ∑ For the total output power, P e This is the rated output power of power module 2;

[0106] The classification processing unit 132 is used to sort the light-load power modules 2 in descending order of output power. The first N light-load power modules 2 corresponding to the output power are kept enabled power modules 2, and the remaining light-load power modules 2 are power modules 2 to be turned off.

[0107] As one embodiment of the control module 14, the control module 14 includes:

[0108] The second calculation unit 141 is used to calculate based on a second preset formula: The remaining power of each power module 2 that remains enabled is calculated; where P1 is the current first output power of the power module 2 that remains enabled. This is the remaining power;

[0109] The sorting unit 142 is used to sort all the power modules 2 that will remain enabled in descending order of their respective remaining power to obtain a first sorting table; and to sort all the power modules 2 that will be turned off in ascending order of their respective current second output power to obtain a second sorting table.

[0110] The first judgment unit 143 is used to determine whether the sum of the remaining power of the first i items in the first sorting table is greater than or equal to the second output power of the first item in the second sorting table. The initial value of i is one. If yes, the output terminal of the power module 2 that keeps enabled in the first i items of the first sorting table is connected to the output terminal of the power module 2 that is to be turned off in the first item of the second sorting table, and the power module 2 that is to be turned off in the first item of the second sorting table is disconnected from power supply. If no, i is iterated to i+1, and the judgment unit 143 continues to determine whether the sum of the remaining power of the first i items in the first sorting table is greater than or equal to the second output power of the first item in the second sorting table.

[0111] The second judgment unit 144 is used to determine whether the power supply module 2 to be turned off in the first item of the second sorting table is disconnected. If so, the first sorting table and the second sorting table are updated, and i is reset to the initial value.

[0112] As a further implementation of the power supply system, it also includes:

[0113] The second judgment module 15 is used to determine whether the output power of each power module 2 is greater than the preset second output power threshold. If so, the power module 2 with the output power greater than the second output power threshold is an overload power module 2.

[0114] External load information acquisition module 16 is used to acquire external load information on overload power supply module 2;

[0115] The power activation module 17 is used to activate the power deactivation module 2 corresponding to the external load information based on the external load information.

[0116] The third judgment module 18 is used to determine whether the power supply module 2 is enabled. If it is enabled, the output terminal of the power supply module 2 is disconnected from the output terminal of the overload power supply module 2.

[0117] It should be noted that the descriptions of each embodiment in the above embodiments have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0118] This application provides a power supply topology.

[0119] As attached Figure 6 As shown, a power supply topology includes:

[0120] Power module 2, there are at least two power modules 2;

[0121] Load slot 3 is connected to power module 2 and is configured in a one-to-one correspondence with power module 2;

[0122] Connector switch 4, connects to the output terminals of any two power modules 2;

[0123] Controller 1 is connected to both the tie switch 4 and the power module 2. Controller 1 is used to control the connection switch 4 to turn on / off and to control the power module 2 to enable / disable power supply. Controller 1 integrates the power supply system described above and executes the power supply method described above when it is running.

[0124] In this embodiment, the interconnecting switch 4 can be a relay, a bipolar transistor, a field-effect transistor, or a silicon controlled rectifier (SCR). The controller 1 controls the interconnecting switch 4 to connect multiple power modules 2 and controls the power supply activation / deactivation of the power modules 2, thereby increasing the output power of the power modules 2 and improving power efficiency.

[0125] It should be noted that, for the sake of convenience and brevity, the above division of functional units and modules is used as an example. In actual applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the system can be divided into different functional units or modules to complete all or part of the functions described above.

[0126] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A power supply control method, characterized in that, include: The output power of each power module is acquired in real time, and there are at least two power modules; Determine whether the output power of each power module is less than a preset first output power threshold. If so, the power module whose output power is less than the first output power threshold is a light-load power module. The total output power is obtained by summing the output power of all the light-load power modules. Based on the total output power, the required number of the light-load power modules is calculated, and the light-load power modules are divided into power modules to be turned off and power modules to be kept on. Connect the output terminal of the power module to be turned off to the output terminal of the power module to be kept on; disconnect the power supply to the power module to be turned off; the power module to be kept on provides power to its corresponding internal load and the external load corresponding to the power module to be turned off; Connecting the output terminal of the power module to be turned off to the output terminal of the power module that remains enabled, and disconnecting the power supply to the power module to be turned off, includes: Based on the second preset calculation formula: The remaining power of each of the power modules that remain enabled is calculated; wherein, To maintain the current first output power of the power module, The remaining power, This refers to the rated output power of the power module; All the power modules that remain enabled are sorted in descending order of their remaining power to obtain a first sorting table; all the power modules that are to be turned off are sorted in ascending order of their current second output power to obtain a second sorting table. Determine whether the sum of the remaining power of the first i items in the first sorting table is greater than or equal to the second output power of the first item in the second sorting table, where the initial value of i is one; if so, connect the output terminal of the power module that keeps enabled in the first i items of the first sorting table to the output terminal of the power module that is to be turned off in the first item of the second sorting table, and disconnect the power supply to the power module that is to be turned off in the first item of the second sorting table. If not, then iterate i to i+1 and continue to determine whether the sum of the remaining power of the first i items of the first sorting table is greater than or equal to the second output power of the first item of the second sorting table; Also includes: Determine whether the power module to be turned off in the first item of the second sorting table is disconnected from power. If so, update the first sorting table and the second sorting table, and reset i to its initial value.

2. The power supply control method according to claim 1, characterized in that, Based on the total output power, the required number of power modules is calculated, and the light-load power modules are divided into power modules to be turned off and power modules to be kept on, including: Based on the first preset formula: The required quantity is calculated; wherein, For the quantity required, The total output power, This refers to the rated output power of the power module; The light-load power modules are arranged in descending order of output power. The first N light-load power modules corresponding to the output power are the power modules that are kept enabled, and the remaining light-load power modules are the power modules that are to be turned off.

3. A power supply control method according to any one of claims 1-2, characterized in that, Also includes: Determine whether the output power of each power module is greater than a preset second output power threshold. If so, the power module whose output power is greater than the second output power threshold is an overload power module. Obtain the external load information on the overload power module; Based on the external load information, enable the power supply module that is disabled corresponding to the external load information; Determine whether the power supply module is enabled. If so, disconnect the output terminal of the power supply module from the output terminal of the overload power supply module.

4. A power supply control system, characterized in that, include: An output power acquisition module (11) is used to acquire the output power of each power module (2) in real time, wherein there are at least two power modules (2); The first judgment module (12) is used to determine whether the output power of each power module (2) is less than the preset first output power threshold. If it is less, the power module (2) whose output power is less than the first output power threshold is a light-load power module (2). The arithmetic processing module (13) is used to sum the output power of all the light-load power modules (2) to obtain the total output power; and based on the total output power, calculate the required number of the light-load power modules (2) and divide the light-load power modules (2) into power modules to be turned off (2) and power modules to be kept enabled (2). The control module (14) is used to connect the output terminal of the power module (2) to be turned off to the output terminal of the power module (2) to be kept enabled; to disconnect the power supply to the power module (2) to be turned off; and to supply power to the internal load corresponding to itself and the external load corresponding to the power module (2) to be turned off. The control module (14) includes: The second calculation unit (141) is used to calculate based on a second preset formula: The remaining power of each of the power modules (2) that remain enabled is calculated; wherein, To maintain the current first output power of the power module (2), The remaining power, The rated output power of the power module (2); The sorting unit (142) is used to sort all the power modules (2) that remain enabled in descending order according to their respective remaining power to obtain a first sorting table; and to sort all the power modules (2) that are to be turned off in ascending order according to their respective current second output power to obtain a second sorting table. The first judgment unit (143) is used to determine whether the sum of the remaining power of the first i items of the first sorting table is greater than or equal to the second output power of the first item of the second sorting table. The initial value of i is one. If yes, the output terminal of the power module (2) that keeps enabled in the first i items of the first sorting table is connected to the output terminal of the power module (2) that is to be turned off in the first item of the second sorting table, and the power module (2) that is to be turned off in the first item of the second sorting table is disconnected from power supply. If no, i is iterated to i+1, and the judgment is continued to determine whether the sum of the remaining power of the first i items of the first sorting table is greater than or equal to the second output power of the first item of the second sorting table. The second judgment unit (144) is used to determine whether the power module (2) to be turned off in the first item of the second sorting table is disconnected from the power supply. If so, the first sorting table and the second sorting table are updated, and i is reset to the initial value.

5. A power supply control system according to claim 4, characterized in that, The arithmetic processing module (13) includes: The first arithmetic unit (131) is used to perform calculations based on a first preset formula: The required quantity is calculated; wherein, For the quantity required, The total output power, The rated output power of the power module (2); The classification processing unit (132) is used to sort the light-load power modules (2) in descending order of output power. The first N light-load power modules (2) corresponding to the output power are the power modules (2) that are kept enabled, and the remaining light-load power modules (2) are the power modules (2) that are to be turned off.

6. A power supply control system according to any one of claims 4-5, characterized in that, Also includes: The second judgment module (15) is used to determine whether the output power of each power module (2) is greater than the preset second output power threshold. If so, the power module (2) whose output power is greater than the second output power threshold is an overload power module (2). External load information acquisition module (16) is used to acquire external load information on the overload power module (2); The power activation module (17) is used to activate the power deactivation module (2) corresponding to the external load information based on the external load information. The third judgment module (18) is used to determine whether the power supply module (2) is enabled. If it is enabled, the output terminal of the power supply module (2) is disconnected from the output terminal of the overload power supply module (2).

7. A power supply topology, characterized in that, include: Power module (2), wherein there are at least two power modules (2); Load slot (3) is connected to the power module (2) and is configured in a one-to-one correspondence with the power module (2); The interconnection switch (4) is connected to the output terminals of any two of the power modules (2); The controller (1) is connected to the communication switch (4) and the power module (2) respectively, and is used to control the connection switch (4) to turn on / off and to control the power module (2) to enable / disable power supply. When the controller (1) is running, it executes the method as described in any one of claims 1-2.

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