Power supply system, base station, and control method

Abstract

The present application relates to the technical field of power supply, and discloses a power supply system, a base station, and a control method. The method comprises: the input ends of M voltage conversion modules are all connected to a first bus, and the output ends of the M voltage conversion modules are all connected to a second bus. The voltage conversion modules can convert a first voltage of the first bus into a second voltage of the second bus. On the basis of loads connected to the second bus as detected by N detection modules, a control module can control some of the M voltage conversion modules to be turned off or turned on, wherein the fewer loads connected to the second bus, the more voltage conversion modules among the M voltage conversion modules are turned off. In this way, power supply buses of different voltages are used in the power supply system to supply power to loads, so that direct current loss in a power supply process can be reduced, and the voltage conversion efficiency of the voltage conversion modules can be improved, thereby improving the power supply efficiency.

Description

Power supply system, base station and control method

[0001] The present application claims priority to the Chinese patent application No. 202411022760.2, filed on July 26, 2024, entitled "Power supply system, base station and control method", the whole content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of power supply, in particular to a power supply system, a base station and a control method. BACKGROUND

[0003] With the continuous evolution of 5G, 5.5G and future communication network technologies, the processing capability and performance of base station devices are improved, and the demand for power is further increased. Moreover, the requirements of base station devices for the power supply capability, power supply efficiency and power supply cost of power supply devices are also increasingly high.

[0004] However, when using the current power supply device for power supply, the heat loss in the circuit is high and / or the power supply efficiency is low, which may affect the performance of the base station device. SUMMARY

[0005] The present application provides a power supply system, a base station and a control method, which can improve the power supply efficiency of the power supply system.

[0006] To achieve the above purpose, the present application provides the following technical solutions:

[0007] In a first aspect, the present application provides a power supply system, comprising: a first bus bar, a second bus bar, M voltage conversion modules, N detection modules and a control module, M is an integer greater than 1, and N is a positive integer; the input ends of the M voltage conversion modules are connected with the first bus bar, and the output ends of the M voltage conversion modules are connected with the second bus bar.

[0008] The first bus bar can transmit a first voltage; the second bus bar can transmit a second voltage, the first voltage being different from the second voltage; the voltage conversion module can convert the first voltage into the second voltage; the N detection modules can detect the load connected to the second bus bar; and the control module can control part of the M voltage conversion modules to be closed or opened according to the load connected to the second bus bar, wherein the fewer the load connected to the second bus bar, the more the voltage conversion modules closed in the M voltage conversion modules.

[0009] Thus, the power supply system adopts power supply buses with different voltages to supply power to the loads, which can reduce the DC loss in the power supply process. According to the loads connected to the second bus, the control module controls some of the M voltage conversion modules to be turned off or turned on. When the loads connected to the second bus are small, the number of turned-on voltage conversion modules is also small, and the load of the turned-on voltage conversion modules is increased, thereby improving the voltage conversion efficiency of the voltage conversion modules and the power supply efficiency of the power supply system.

[0010] In a possible implementation, the power supply system further includes Q circuit boards, Q being an integer greater than 1, each of the Q circuit boards including at least one voltage conversion module, at least one detection module, and / or at least one load. The N detection modules can specifically detect the loads of the Q circuit boards respectively. The control module can specifically obtain the loads connected to the second bus according to the loads of the Q circuit boards respectively, and control H voltage conversion modules to be turned off according to the loads connected to the second bus, the circuit boards where the H voltage conversion modules are located being the circuit boards with low loads among the Q circuit boards, and H being less than M.

[0011] Thus, turning off the H voltage conversion modules of the circuit boards with low loads and supplying power through the voltage conversion modules in other circuit boards can reduce the loss generated when the voltage conversion modules supply power to the loads in other circuit boards, and improve the power supply efficiency.

[0012] In a possible implementation, there is a mapping relationship between the loads connected to the second bus and the number of turned-on voltage conversion modules. The control module can specifically control some of the M voltage conversion modules to be turned off or turned on according to the loads connected to the second bus and the mapping relationship.

[0013] Thus, the control module can determine the number of turned-on voltage conversion modules when the loads connected to the second bus correspond to the highest voltage conversion efficiency according to the mapping relationship between the loads connected to the second bus and the number of turned-on voltage conversion modules, which can improve the voltage conversion efficiency of the turned-on voltage conversion modules and the power supply efficiency of the entire power supply system.

[0014] In a possible implementation, the N detection modules are current detection modules, and the mapping relationship is specifically a mapping relationship between the total current of the loads connected to the second bus and the number of turned-on voltage conversion modules.

[0015] Alternatively, the mapping relationship can also be specifically a mapping relationship between the total power of the loads connected to the second bus and the number of turned-on voltage conversion modules.

[0016] The current of the loads connected to the second bus is easy to detect, and the load current can represent the size of the load. Thus, the control module can obtain the size information of the load, and the subsequent calculation is facilitated.

[0017] In a possible implementation, the power supply system further comprises a backboard, and the backboard is provided with one or more of the following: the first busbar, the second busbar, the control module, part or all of the N detection modules, or part or all of the M voltage conversion modules; or the control module is arranged in any one of the circuit boards; or part or all of the N detection modules are arranged in the Q circuit boards; or part or all of the M voltage conversion modules are arranged in the Q circuit boards.

[0018] In this way, the power supply system is facilitated to expand the control module and / or the detection module and / or the voltage conversion module or other modules in other positions, and the versatility of the modules in the power supply system is improved.

[0019] In a possible implementation, part or all of the N detection modules are connected to the control module through the backboard, and / or part or all of the M voltage conversion modules are connected to the control module through the backboard.

[0020] In this way, when the detection module and the control module are arranged in the same circuit board, the detection module and the control module can be connected through the wiring in the circuit board, and when the detection module and the control module are arranged in different circuit boards, the detection module and the control module can be connected through the backboard. When the voltage conversion module and the control module are arranged in the same circuit board, the voltage conversion module and the control module can be connected through the wiring in the circuit board, and when the voltage conversion module and the control module are arranged in different circuit boards, the voltage conversion module and the control module can be connected through the backboard. The transmission of the current and / or the signal is realized.

[0021] In a possible implementation, Q is equal to M, and any one of the circuit boards comprises one voltage conversion module and one detection module.

[0022] In this way, each circuit board comprises one voltage conversion module and one detection module, the voltage conversion module supplies power to the load in the circuit board, the power supply efficiency can be improved, and the detection module detects the load in the circuit board, which facilitates subsequent calculation and determination of the load size of each circuit board.

[0023] In a possible implementation, the Q circuit boards comprise one or more of the following: a baseband board or a master control board.

[0024] Alternatively, the Q circuit boards can further comprise other types of circuit boards, which are not limited in the embodiments of the present application.

[0025] In a possible implementation, the M voltage conversion modules are step-down modules, and the absolute value of the first voltage is greater than the absolute value of the second voltage.

[0026] In this way, the voltage of the first busbar is relatively large, and the loss in the current transmission process is relatively small.

[0027] In a second aspect, the present application provides a power supply control method, applied to a control module, comprising: receiving detection signals from N detection modules; the N detection modules are used for detecting loads connected to a second bus; N is a positive integer; determining that part of M voltage conversion modules are closed or opened based on the N detection signals; M is an integer greater than 1; and controlling part of the M voltage conversion modules to be closed or opened.

[0028] In a third aspect, the present application provides a base station comprising the power supply system in the first aspect.

[0029] In a fourth aspect, the present application provides a computer readable storage medium, which stores a computer program. The computer program is executed by a processor to implement the method performed by the control module in the first aspect.

[0030] In a fifth aspect, the present application provides a computer program product, which comprises a computer program. When the computer program is executed, the computer program causes a computer to perform the method performed by the control module in the first aspect.

[0031] In a sixth aspect, the present application provides a chip, which comprises a processor configured to invoke a computer program in a memory to perform the method performed by the control module in the first aspect.

[0032] It should be understood that the second aspect to the sixth aspect of the present application correspond to the technical solution of the first aspect of the present application, and the beneficial effects achieved by each aspect and the corresponding feasible implementation manners are similar, which will not be described again. BRIEF DESCRIPTION OF DRAWINGS

[0033] FIG. 1 is a schematic diagram of a power supply system according to an embodiment of the present application;

[0034] FIG. 2 is a schematic diagram of a multi-card frame device according to an embodiment of the present application;

[0035] FIG. 3 is a schematic diagram of another power supply system according to an embodiment of the present application;

[0036] FIG. 4 is a schematic diagram of another power supply system according to an embodiment of the present application;

[0037] FIG. 5 is a schematic diagram of voltage conversion efficiency according to an embodiment of the present application;

[0038] FIG. 6 is a schematic diagram of another power supply system according to an embodiment of the present application;

[0039] FIG. 7 is a schematic diagram of another voltage conversion efficiency according to an embodiment of the present application;

[0040] FIG. 8 is a schematic diagram of another power supply system according to an embodiment of the present application;

[0041] FIG. 9 is another voltage conversion efficiency diagram provided by an embodiment of the present application;

[0042] FIG. 10 is a power supply control method flow diagram provided by an embodiment of the present application;

[0043] FIG. 11 is a chip system structure diagram provided by an embodiment of the present application. DETAILED DESCRIPTION

[0044] In the embodiments of the present application, the word "exemplary" or "for example" is used to mean serving as an example, instance, or illustration. Any implementation or design solution described as "exemplary" or "for example" in the embodiments of the present application should not be construed as being preferred or advantageous over other implementations or design solutions. In fact, the word "exemplary" or "for example" is used to present concepts in a concrete manner.

[0045] In the embodiments of the present application, the terms "first", "second", etc. are used only for the purpose of description, and should not be interpreted or implied to indicate or imply relative importance or imply the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0046] In the present application, the term "at least one" means one or more, and the term "a plurality of" means two or more, for example, a plurality of second messages means two or more second messages. The terms "system" and "network" are often used interchangeably in the present application.

[0047] It should be understood that the terms used in the description of various described examples herein are only for the purpose of describing specific examples, and are not intended to be limiting.

[0048] It should also be understood that the term "and / or" used herein means and covers any and all possible combinations of one or more of the associated listed items. The term "and / or", is a description of the association between associated objects, which means that there can be three relationships, for example, A and / or B, which means that there can be three cases: A alone, A and B together, and B alone. In addition, the character " / " in the present application generally represents an "or" relationship between the front and rear associated objects.

[0049] It should also be understood that in various embodiments of the present application, the size of the serial number of each process does not mean the order of execution, and the execution order of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0050] It should be understood that the references made throughout this specification of "one embodiment", "an embodiment", "one possible implementation" mean that a particular feature, structure, or characteristic described in connection with an embodiment or implementation is included in at least one embodiment of the application. The appearances of the phrases "in one embodiment" or "in an embodiment", "one possible implementation" in various places throughout the specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0051] For the purpose of understanding the embodiments of the present application, first, the glossary involved in the present application is briefly explained.

[0052] The baseband unit (BBU) is a component in a wireless communication system, which can be responsible for signal processing and management, and is located in a base station device. The BBU can be used in cooperation with a remote radio unit (RRU). The BBU and the RRU can be connected by optical fiber or other high-speed transmission media to realize remote radio processing.

[0053] For example, taking the alternating current power supply of 220V as an example, the external power supply architecture of the base station device can be as shown in FIG. 1. The alternating current power supply of 220V is converted into direct current power supply of -48V by a power supply unit (PSU). The direct current power supply of -48V can supply power for the BBU and / or the radio frequency module through a cable. At the same time, a backup power device, such as a lead-acid storage battery, can be arranged at the direct current power supply in the architecture. The backup power device can provide backup direct current power supply of -48V when the alternating current power supply of 220V and / or the direct current power supply of -48V is abnormal.

[0054] Among them, the radio frequency module can be the RRU.

[0055] In an example, the BBU is a multi-card frame device as shown in FIG. 2, which can be applied in the fields of communication, server or data center, etc. Specifically, the multi-card frame device can include a structural outer frame 110, a plurality of card slots 120, and a backboard 130 (connection relationship diagram not shown) interconnecting between the plurality of slots, and the plurality of card slots 120 can provide pluggable module 140 insertion positions. The backboard 130 can provide interconnection communication signals and power supply bus for the pluggable module 140 accessing the plurality of card slots.

[0056] Optionally, the pluggable module 140 can include one or more of the following: a fan, a power distribution power supply, a service single board (service board) or a monitoring single board, etc.

[0057] In actual application, after the BBU input -48V DC power supply, the -48V DC power supply can be further processed to meet the power demand of each pluggable module of the BBU.

[0058] For example, a plurality of service single boards can be accessed in the plurality of card slots of the BBU. The plurality of service single boards all need 12V voltage, and the BBU can convert the -48V DC power supply into 12V DC power supply to meet the power demand of each service single board.

[0059] Taking the input voltage of the power supply system as -48V and the pluggable module as a service single board and the power demand of the service single board as 12V as an example, the application is introduced.

[0060] In an example, the BBU can use the intermediate bus architecture (IBA) to supply power to the service single boards accessed in the BBU, wherein the bus voltage is 12V.

[0061] As shown in FIG. 3, it is a power supply system schematic diagram for the BBU using the IBA architecture to supply power to the accessed service single boards. The power supply system can include a voltage conversion module 101, a backboard 102, a service single board 103, and a backboard connector 104. The power supply conversion module 101 and the backboard 102 are connected through the backboard connector 104; the backboard 102 and the service single board 103 are connected through the backboard connector 104. The service single board 103 is provided with a load 105.

[0062] The voltage conversion module 101 can be used to convert the -48V voltage into 12V voltage and transmit the 12V voltage to the backboard 102 through the backboard connector 104.

[0063] The voltage conversion module 101 can be a PSU module, and the embodiments of the application do not make specific limitations thereto.

[0064] The voltage conversion module 101 can be one or more, and the embodiments of the application do not make specific limitations thereto.

[0065] The backboard 102 can be used to transmit the 12V voltage to the service single board 103 through the backboard connector 104.

[0066] The service single board 103 can be used to supply power to the load 105 in the service single board 103 using the 12V voltage.

[0067] The backboard connector 104 can be used to provide a physical interface, so that the backboard 102 and the voltage conversion module 101 and the backboard 102 and the service single board 103 can be connected and communicated with each other.

[0068] In FIG. 3, the service board 103 can include a baseband board 1031 and a master board 1032. The loads in the baseband board 1031 can include one or more of the following: a field-programmable gate array (FPGA), a double data rate memory (DDR), a clock (CLK), a controller area network (CAN), etc. The loads in the master board 1032 can include one or more of the following: a base band (BB), an FPGA, a DDR, a CLK, etc.

[0069] In this method, the BBU supplies power to a plurality of service boards accessed in a plurality of card slots based on the IBA architecture. The voltage of -48V is converted into the voltage of 12V at the voltage conversion module 101. The busbar of 12V needs to pass through the voltage conversion module 101, the backboard connector 104 between the voltage conversion module 101 and the backboard 102, the backboard 102, the backboard connector 104 between the backboard 102 and the service board 103, and the service board 103. The direct current resistance R in the passive link is large, so the direct current loss I 2 R is also large, resulting in low power supply efficiency. At the same time, due to the large contact impedance of the backboard connector 104 between the voltage conversion module 101 and the backboard 102 and between the backboard 102 and the service board 103, the direct current loss I 2 R causes the temperature of the backboard connector to be high, resulting in limited power supply capacity and further reducing the power supply efficiency.

[0070] In another example, the BBU can also use a distributed power architecture (DPA) to supply power to the service board in the BBU, in which the busbar voltage is -48V.

[0071] As shown in FIG. 4, it is a power supply system schematic diagram in which the BBU uses the DPA architecture to supply power to the accessed service board. The power supply system can include a power access module 201, a backboard 202, a service board 203, and a backboard connector 204. The voltage conversion module 205 and the load 206 are arranged in the service board 203.

[0072] The power access module 201 and the backboard 202 are connected through the backboard connector 204; the backboard 202 and the service board 203 are connected through the backboard connector 204.

[0073] The power access module 201 can be used to provide -48V power supply and transmit 12V voltage to the backplane 102 through the backplane connector 204. The power access module 201 can also be used to provide protection functions such as lightning protection, surge protection or overload protection. The power access module 201 can be one or more, and the embodiments of the present application do not make specific limitations thereto.

[0074] The power access module 201 can be a power interface unit (PIU).

[0075] The backplane 202 can be used to transmit -48V voltage to the service board 203 through the backplane connector 204.

[0076] The service board 203 is provided with a voltage conversion module 205, which can be a brick module platform (BMP) for converting -48V voltage to 12V voltage. The service board 203 can use the voltage conversion module 205 to convert -48V voltage to 12V voltage to power the load 206 in the service board 203.

[0077] In an example, as shown in FIG. 4, the service board 203 can include a baseband board 2031 and / or a master board 2032. The baseband board 2031 can include a BMP 2051 and a load 2061. The BMP 2051 provides 12V voltage for the load 2061, which can include one or more of the following: FPGA, DDR, CLK or CAN, etc. The master board 2032 can include a BMP 2052 and a load 2062, the BMP 2052 provides 12V voltage for the load 2062, which can include one or more of the following: BB, FPGA, DDR or CLK, etc.

[0078] In the method, the BBU supplies power to a plurality of service boards accessed in the power supply card slot based on the DPA architecture. -48V voltage is transmitted to the voltage conversion module 205 in the service board 203 through the power access module 201, the backplane connector 204 between the power access module 201 and the backplane 202, the backplane 202, the backplane connector 204 between the backplane 202 and the service board 203, and the voltage conversion module 205 converts the -48V voltage to 12V voltage to power the load in the service board 203. Compared with the power supply method of the above-mentioned IBA architecture, the current is smaller when transmitting the same power, and the I 2R is much smaller than the scenario of 12V voltage. But when the load in the service board 203 is small, the corresponding load current is in the super low load relative to the voltage conversion module 205, at this time, the voltage conversion efficiency of the voltage conversion module 205 is low.

[0079] Exemplarily, as shown in FIG. 5, it is a voltage conversion efficiency curve diagram of the voltage conversion module 205 under different loads. Wherein, the horizontal coordinate is the ratio of the load current to the rated load current, and the vertical coordinate is the voltage conversion efficiency of the voltage conversion module 205.

[0080] Exemplarily, as shown in FIG. 5, the voltage conversion efficiency under the load current of 10% is decreased by 4.5% compared with the voltage conversion efficiency under the load current of 40%. When the load current is less than 10%, the voltage conversion efficiency is sharply decreased.

[0081] Therefore, the embodiment of the present application provides a power supply system. The power supply system adopts the power supply architecture mixed with the IBA architecture and the DPA architecture, and can supply power to the plurality of pluggable modules in the multi-card frame device through the -48V bus and the 12V bus. The high-voltage bus of -48V is adopted to transmit voltage in the passive link between the power supply and the pluggable module, and the direct current loss I 2 R and the heat dissipation problem caused by the direct current loss are reduced. The power supply device can also provide the low-voltage bus of 12V, and when the load in the pluggable module is low, the voltage conversion module in the pluggable module can be turned off, and the voltage conversion module in other pluggable modules is powered through the low-voltage bus of 12V; in this way, the voltage conversion module in the pluggable module can supply power to the load in other pluggable modules through the low-voltage bus of 12V, the load of the voltage conversion module is improved, and the voltage conversion efficiency of the voltage conversion module is improved, thereby improving the power supply efficiency of the whole power supply system.

[0082] The embodiment of the present application can be applied to the BBU of the base station device or other multi-card frame devices; or the embodiment of the present application can also be applied to data center servers or other multi-card frame devices, or the embodiment of the present application can also be applied to other multi-card frame devices, and the embodiment of the present application does not make specific limitation.

[0083] Optionally, the embodiment of the present application takes the BBU of the base station device as the power supply device, and takes the pluggable module of the BBU as the service board as an example for introduction.

[0084] Exemplarily, FIG. 6 is a schematic diagram of a power supply system provided by the embodiment of the present application. As shown in FIG. 6, the power supply system can include a power access module 301, a backboard 302 and Q service boards (circuit boards) 303. The power access module 301 is connected with the Q service boards 303 through the backboard 302, and Q is an integer greater than 1.

[0085] The backboard connectors between the power access module 301 and the backboard 302, and between the backboard 302 and the Q service single boards 303 are also included in FIG. 6.

[0086] The power access module 301 is configured to provide -48V power supply for the Q service single boards 303 in the power supply system.

[0087] The first bus M1 and the second bus M2 are arranged in the backboard 302. The first bus M1 is configured to transmit a first voltage, and the second bus M2 is configured to transmit a second voltage, the first voltage being different from the second voltage.

[0088] The first bus M1 is connected with the power access module 301, and can be configured to transmit the voltage output by the power access module 301. The second bus M2 can be configured to provide working voltage for the Q service single boards 303.

[0089] For example, the first bus M1 can be a high-voltage power supply bus, and the second bus M2 can be a low-voltage power supply bus. The absolute value of the first voltage is greater than the absolute value of the second voltage. For example, the first bus M1 can be a -48V high-voltage power supply bus, and the first voltage can be -48V DC voltage; the first bus M1 can be a 12V low-voltage power supply bus, and the second voltage can be 12V DC voltage.

[0090] It should be understood that the specific values of the first voltage and the second voltage can also be other values. For example, the first voltage can also be -36V DC voltage; the second voltage can also be 6V DC voltage. Alternatively, the first voltage can also be -72V DC voltage; the second voltage can also be 24V DC voltage. The embodiments of the present application do not make specific limitations in this regard.

[0091] The Q service single boards 303 can be provided with M voltage conversion modules 304, N detection modules 305, a control module 306 and / or a load 307, M being an integer greater than 1, and N being a positive integer. The input ends of the M voltage conversion modules 304 are all connected with the first bus M1, and the output ends of the M voltage conversion modules 304 are all connected with the second bus M2. Therefore, the M voltage conversion modules 304 can transmit voltage through the second bus M2. The power supply capability sharing between different service single boards 303 can be achieved.

[0092] The service single board 303 can include at least one voltage conversion module 304; or the service single board 303 can include at least one voltage conversion module 304 and at least one detection module 305; or the service single board 303 can include at least one detection module 305; or the service single board 303 can include one voltage conversion module 304, one detection module 305 and one control module 306, and the embodiments of the present application do not make specific limitations in this regard.

[0093] The M voltage conversion modules 304 can be used to convert the first voltage in the first bus M1 into the second voltage in the second bus M2.

[0094] For example, the voltage conversion module 304 can be a voltage reduction module, which converts the first voltage of -48V into the second voltage of 12V.

[0095] The M voltage conversion modules 304 can also be used to provide the second voltage for the load 307 in the Q service single boards 303.

[0096] In an embodiment, the M voltage conversion modules 304 can also be arranged in other positions. For example, the M voltage conversion modules 304 can also be arranged in the backboard 302; or the M voltage conversion modules 304 can be partially arranged in the backboard 302 and partially arranged in the service single board 303; or the M voltage conversion modules 304 can be arranged outside the backboard 302 and the service single board 303, and the embodiments of the present application do not make specific limitations in this regard.

[0097] The N detection modules 305 can be used to detect the load connected to the second bus M2 and send the detection signal to the control module 306. The detection signal can include the load connected to the second bus M2.

[0098] When the detection module 305 and the control module 306 are arranged in the same service single board, the detection module 305 can send the detection signal to the control module 306 based on the wiring in the service single board.

[0099] When the detection module 305 and the control module 306 are arranged in different service single boards, the detection module 305 can send the detection signal to the control module 306 based on the backboard 302.

[0100] In an embodiment, the N detection modules 305 can also be used to detect the load of each service single board 303, and the detection signal can include the load connected to each service single board 303.

[0101] For example, the N detection modules 305 can respectively output N detection signals and transmit to the control module 306.

[0102] In the embodiments of the present application, the detection module 305 can be a current detection module, configured to detect a load current of the second bus M2. The load size can be represented by the load current.

[0103] In an embodiment, the N detection modules 305 can also be arranged at other positions. For example, the N detection modules 305 can also be arranged in the backboard 302, or a part of the N detection modules 305 can be arranged in the backboard 302 and the other part can be arranged in the service board 303. The embodiments of the present application do not limit this.

[0104] The control module 306 can be configured to receive N detection signals from the N detection modules 305, and the N detection signals can include N load currents. The control module 306 can also be configured to calculate the sum of the N load currents to obtain the load current of the second bus M2. According to the load current of the second bus M2, the control module 306 can determine that a part of the M voltage conversion modules 304 is closed or opened, and send a control signal to the part of the M voltage conversion modules 304 to control the corresponding voltage conversion module 304 to be closed or opened.

[0105] When the voltage conversion module 304 and the control module 306 are arranged in the same service board, the control module 306 can send the control signal to the voltage conversion module 304 based on the wiring in the service board.

[0106] When the voltage conversion module 304 and the control module 306 are arranged in different service boards, the control module 306 can send the control signal to the voltage conversion module 304 based on the backboard 302.

[0107] In the embodiments of the present application, the control module 306 can be a power-on control module or a processor, and the embodiments of the present application do not limit this.

[0108] Optionally, the control module 306 can be arranged in any service board, or a plurality of control modules 306 can be arranged in a plurality of service boards, and the embodiments of the present application do not limit this.

[0109] In some embodiments, the control module 306 can pre-store a mapping relationship between the load connected to the second bus M2 and the number of opened voltage conversion modules in the power supply system. The control module 306 can determine that a part of the M voltage conversion modules 304 is closed or opened based on the load connected to the second bus M2 and the mapping relationship. Adaptively, the control module 306 can be configured to control a part of the M voltage conversion modules 304 to be closed or opened. Wherein, the greater the load connected to the second bus M2, the greater the number of opened voltage conversion modules in the M voltage conversion modules 304 in the power supply system.

[0110] Specifically, the voltage conversion efficiency of the voltage conversion module changes with the size of the load, and the voltage conversion efficiency is greater when the load remains in the first interval. For example, as shown in FIG. 5, the voltage conversion efficiency is greater than 96.0% at 30% of the load current and 60% of the load current.

[0111] When M voltage conversion modules are included in the power supply system, the control module 306 can determine the number of voltage conversion modules to be turned on according to the size of the load connected to the second bus M2 in the power supply system when the voltage conversion efficiency is the highest. Therefore, the fewer the load connected to the second bus, the more voltage conversion modules to be turned off among the M voltage conversion modules, which can improve the voltage conversion efficiency of the voltage conversion modules to be turned on.

[0112] For example, there can be a mapping relationship between the load current connected to the second bus M2 and the number of voltage conversion modules to be turned on in the power supply system. When the load current connected to the second bus M2 decreases, more voltage conversion modules are turned off.

[0113] For example, FIG. 7 is a voltage conversion efficiency curve diagram of different load currents when different numbers of voltage conversion modules are turned on in a power supply system including four voltage conversion modules. The abscissa is the load current connected to the second bus M2, and the ordinate is the voltage conversion efficiency.

[0114] In FIG. 7, the voltage conversion efficiency curve L1 under different load currents when one voltage conversion module is turned on; the voltage conversion efficiency curve L2 under different load currents when two voltage conversion modules are turned on; the voltage conversion efficiency curve L3 under different load currents when three voltage conversion modules are turned on; and the voltage conversion efficiency curve L4 under different load currents when four voltage conversion modules are turned on.

[0115] According to the above voltage conversion efficiency curves L1, L2, L3, and L4, the target voltage conversion efficiency curve L5 (such as the thick curve in FIG. 7) can be determined. The control module 306 can determine the mapping relationship between the load current connected to the second bus M2 and the number of voltage conversion modules to be turned on in the power supply system based on the target voltage conversion efficiency curve L5.

[0116] As shown in FIG. 7, when the load current connected to the second bus M2 is less than or equal to Ia, the voltage conversion efficiency when one voltage conversion module is turned on is the greatest, and the control module 306 can control one voltage conversion module to be turned on, and the voltage output by the voltage conversion module can supply power to all loads in the power supply system.

[0117] When the load current accessing the second bus M2 is greater than Ia and less than or equal to Ib, the voltage conversion efficiency is the largest when two voltage conversion modules are turned on, and the control module 306 can control the two voltage conversion modules to be turned on, and the voltage output by the two voltage conversion modules can be used to supply power to all loads in the power supply system.

[0118] When the load current accessing the second bus M2 is greater than Ib and less than or equal to Ic, the voltage conversion efficiency is the largest when three voltage conversion modules are turned on, and the control module 306 can control the three voltage conversion modules to be turned on, and the voltage output by the three voltage conversion modules can be used to supply power to all loads in the power supply system.

[0119] When the load current accessing the second bus M2 is greater than Ic, the voltage conversion efficiency is the largest when four voltage conversion modules are turned on, and the control module 306 can control the four voltage conversion modules to be turned on, and the voltage output by the four voltage conversion modules can be used to supply power to all loads in the power supply system.

[0120] With the increase of the load current accessing the second bus M2, the number of voltage conversion modules to be turned on increases, so that the voltage conversion efficiency in the power supply system is the largest.

[0121] In this way, the control module 306 determines the number of voltage conversion modules to be turned on when the voltage conversion efficiency is the largest according to the size of the load current accessing the second bus M2, and the voltage conversion efficiency of the turned-on voltage conversion modules can be improved, so that the power supply efficiency of the entire power supply system is improved.

[0122] Optionally, the voltage conversion efficiency curves of different load currents when different numbers of voltage conversion modules are turned on can be measured by researchers, and embodiments of the present application do not make specific limitations.

[0123] It should be understood that the voltage conversion efficiency curve graph of different load currents when the power supply system includes four voltage conversion modules is only exemplified in FIG. 7. The power supply system can also include more or fewer voltage conversion modules, and more or fewer voltage conversion modules correspond to different voltage conversion efficiency curves, and different target voltage conversion efficiency curves can be obtained, and embodiments of the present application do not make specific limitations.

[0124] In an embodiment, in addition to the load current accessing the second bus representing the size of the load accessing the second bus, the load power accessing the second bus can also represent the size of the load accessing the second bus, or other ways can also be used to represent the size of the load accessing the second bus, and embodiments of the present application do not make specific limitations.

[0125] In an embodiment, when the load of the second bus is small, and H voltage conversion modules of the M voltage conversion modules 304 need to be closed, H voltage conversion modules in the service board with lower load can be closed, and H is less than M.

[0126] For example, the control module 306 can detect the load current of each of the Q service boards 303 according to the N detection modules, and control H voltage conversion modules in the service board with low load current to be closed.

[0127] In an embodiment, the Q service boards 303 can include a baseband board and / or a master control board, etc. The Q service boards 303 can also include other service boards, which are not specifically limited in the embodiment of the present application.

[0128] Optionally, the values of Q, M and N can be the same or different, which are not specifically limited in the embodiment of the present application.

[0129] When the control module 306 and the voltage conversion module 304 are located in the same service board 303, the voltage conversion module 304 and the control module 306 can be connected through the wiring in the service board; when the control module 306 and the voltage conversion module 304 are located in different service boards 303, the voltage conversion module 304 and the control module 306 are connected through the backboard 302.

[0130] When the control module 306 and the detection module 305 are located in the same service board 303, the detection module 305 and the control module 306 can be connected through the wiring in the service board; when the control module 306 and the detection module 305 are located in different service boards 303, the detection module 305 and the control module 306 are connected through the backboard 302.

[0131] In this way, the power supply system is facilitated to expand the control module and / or the detection module and / or the voltage conversion module or other modules in other positions, and the versatility of the modules in the power supply system is improved.

[0132] In an embodiment, the values of Q, M and N are the same, for example, Q, M and N can all be 2.

[0133] For example, as shown in FIG. 8, the two service boards 303 can include a baseband board 3031 and a master control board 3032. The baseband board 3031 is provided with a voltage conversion module 3041, a detection module 3051 and a load 3071. The master control board 3032 is provided with a voltage conversion module 3042, a detection module 3052, a control module 306 and a load 3072.

[0134] The voltage conversion module 3041 in the baseband board 3031 is connected with the input end of the voltage conversion module 3042 in the main control board 3032 through the first bus M1, and the output end of the voltage conversion module 3041 in the baseband board 3031 is connected with the output end of the voltage conversion module 3042 in the main control board 3032 through the second bus M2.

[0135] In the baseband board 3031, the voltage conversion module 3041 is used for converting the voltage of-48V into the voltage of 12V to supply power for the load 3071.

[0136] The voltage conversion module 3041 is used for converting the voltage of-48V into the voltage of 12V to supply power for the load 3071.

[0137] The detection module 3051 is arranged between the voltage conversion module 3041 and the load 3071, and is used for detecting the load current I1 of the load 3071. The detection module 3051 is also connected with the control module 306 through the backboard 302, and the detection module 3051 can send the detected load current I1 of the load 3071 to the control module 306 through the backboard 302.

[0138] In the main control board 3032, the voltage conversion module 3042 is used for converting the voltage of-48V into the voltage of 12V to supply power for the load 3072.

[0139] The detection module 3052 can be arranged between the voltage conversion module 3042 and the load 3072, and is used for detecting the load current I2 of the load 3072. The detection module 3052 can also be connected with the control module 306, and the detection module 3052 can send the detected load current I2 of the load 3072 to the control module 306.

[0140] The control module 306 is used for receiving the load current I1 from the detection module 3051 and the load current I2 from the detection module 3052. According to the load current I1 of the detection module 3051 and the load current I2 of the detection module 3052, the load current I accessing the second bus M2 can be obtained as I=I1+I2.

[0141] The control module 306 is also used for determining the number of opened voltage conversion modules according to the load current I accessing the second bus M2 and the mapping relationship between the load current accessing the second bus M2 and the number of opened voltage conversion modules in the power supply system shown in FIG. 7.

[0142] The control module 306 is also used for determining the number of opened voltage conversion modules according to the load current I accessing the second bus M2 and the mapping relationship between the load current accessing the second bus M2 and the number of opened voltage conversion modules in the power supply system shown in FIG. 7.

[0143] For example, if I is less than or equal to Ia, the control module 306 can determine to open one voltage conversion module; if I is greater than Ia, the control module 306 can determine to open two voltage conversion modules.

[0144] In one embodiment, if I is less than or equal to Ia, the control module 306 can control to turn off the voltage conversion module in the service board with lower load among the baseband board 3031 and the main control board 3032.

[0145] For example, if the load current I1 in the baseband board 3031 is greater than the load current I2 of the main control board 3032,

[0146] The control module 306 can determine to turn on the voltage conversion module 3041 in the baseband board 3031 and turn off the voltage conversion module 3042 in the main control board 3032.

[0147] The control module 306 can send control information to the voltage conversion module 3042 to instruct the voltage conversion module 3042 to turn off; or the control module 306 can send first control information to the voltage conversion module 3041 through the backboard 302 to instruct the voltage conversion module 3041 to turn on, and send second control information to the voltage conversion module 3042 to instruct the voltage conversion module 3042 to turn off. The 12V voltage output by the voltage conversion module 3041 in the baseband board 3031 can be used to power the load 3071 in the baseband board 3031, and the 12V voltage output by the voltage conversion module 3041 in the baseband board 3031 can also be used to power the load 3072 in the main control board 3032 through the second bus M2.

[0148] In this way, turning on one voltage conversion module can provide voltage for the entire power supply system, and when the load of a single service board is small, the load of multiple service boards is powered by one voltage conversion module, which improves the load of the voltage conversion module, reduces the loss in the power supply process, and improves the conversion efficiency of the voltage conversion module.

[0149] For example, FIG. 9 is a schematic diagram of voltage conversion efficiency when one voltage conversion module powers different numbers of service boards with small loads. The horizontal axis is the ratio of the load current to the rated current of the load in the service board, and the vertical axis is the voltage conversion efficiency of the voltage conversion module.

[0150] For example, when the voltage conversion module powers the load in a 10% load service board, the voltage conversion efficiency is 92.5%, as shown in FIG. 9.

[0151] When the voltage conversion module powers the load in two 10% load service boards, the voltage conversion efficiency is 95%. Compared with the voltage conversion efficiency when the voltage conversion module powers one 10% load service board, the voltage conversion efficiency is improved by 2.5%.

[0152] When the voltage conversion module supplies power to the loads in the three 10% load service boards, the voltage conversion efficiency is 96%. Compared with the voltage conversion efficiency when the voltage conversion module supplies power to one 10% load service board, the voltage conversion efficiency is increased by 3.5%.

[0153] When the voltage conversion module supplies power to the loads in the four 10% load service boards, the voltage conversion efficiency is 97%. Compared with the voltage conversion efficiency when the voltage conversion module supplies power to one 10% load service board, the voltage conversion efficiency is increased by 4.5%.

[0154] Thus, when the loads in the service boards are small, multiple service boards can be supplied by one voltage conversion module, the load of the voltage conversion module is increased, the voltage conversion efficiency is increased, and thus the power supply efficiency of the whole power supply system is increased.

[0155] In one embodiment, if the load size in the service boards changes, the opening and closing of the voltage conversion module can be affected.

[0156] For example, if the load current I1 in the baseband board 3031 decreases and / or the load current I2 in the master board 3032 increases, the load current I1 is smaller than the load current I2, and the sum I of the load current I1 and the load current I2 is smaller than Ia. The control module 306 can determine to close the voltage conversion module 3041 in the baseband board 3031 and open the voltage conversion module 3042 in the master board 3032.

[0157] The control module 306 can send first control information to the voltage conversion module 3042 to instruct the voltage conversion module 3042 to open, and send second control information to the voltage conversion module 3041 through the backplane 302 to instruct the voltage conversion module 3041 to close. The control module 306 can control the voltage conversion module 3042 in the master board 3032 to open and control the voltage conversion module 3041 in the baseband board 3031 to close through the backplane 302. The 12 voltage output by the voltage conversion module 3042 in the master board 3032 can supply power to the load 3072 in the master board 3032, and the 12 voltage output by the voltage conversion module 3042 in the master board 3032 can also supply power to the load 3071 in the baseband board 3031 through the second bus M2.

[0158] Thus, the load 307 can take power from the voltage conversion module 304 in the respective service board and also take power from the second bus M2, and the load 307 can also work normally when the power source changes.

[0159] In the embodiment of the application, the power supply device supplies power to the voltage conversion module in the service board by -48V voltage, and the I 2The R loss is low, and the generated heat is also low, which can improve the situation that the temperature of the backboard connector rises rapidly, thereby reducing the influence of the temperature on the power supply capability of the power supply system. Under the same current, compared with the voltage of 12V, the power supply capability of the power supply system in the embodiment of the application is improved by 4 times. Meanwhile, when the load of the service single board is low, the service single board can close the voltage conversion module thereof and be powered by the voltage conversion module in other service single boards. In the process of taking power from other service single boards, the I 2 R loss is low when the load current is small when the load of the service single board is low. 2 R loss is also low; when the load of the service single board is high, the service single board opens the voltage conversion module thereof, and at this time, the I 2 R loss is very small and can be ignored. Therefore, the I 2 R loss of the power supply system is low. When the voltage conversion module supplies power for the loads of multiple service single boards, the load corresponding to the voltage conversion module is high, and the voltage conversion efficiency is high, thereby improving the power supply efficiency of the entire power supply system.

[0160] In a possible implementation, when the working voltages required by different service single boards in the power supply system are different, a third bus M3 can also be arranged in the power supply system, and the third bus M3 is used to transmit a third voltage.

[0161] The third bus M3 can be located in the backboard 302; or the third bus M3 can also be located in the service single board 303, and the embodiments of the application do not make specific limitations in this regard.

[0162] The third bus M3 can be a low-voltage power supply bus and can be used to supply power to the service single boards in the power supply system. The absolute value of the first voltage is greater than the absolute value of the third voltage.

[0163] The third bus M3 is different from the second bus M2, and the absolute value of the second voltage can be greater than the absolute value of the third voltage; or the absolute value of the third voltage can be less than the absolute value of the second voltage; or the absolute value of the third voltage can be equal to the absolute value of the second voltage. The embodiments of the application do not make specific limitations in this regard.

[0164] For example, the third voltage can be a direct-current voltage of 6V.

[0165] For example, in the Q service single boards 303 in the power supply system, if the working voltage of part of the service single boards is 12V, the service single boards in this part are powered by the second bus M2; and the working voltage of another part of the service single boards is 6V, and the service single boards in this part are powered by the third bus M3.

[0166] The control module 306 can control part of the voltage conversion modules in the service single boards connected to the second bus M2 to be closed or opened according to the load connected to the second bus M2.

[0167] Specifically, the control module 306 can pre-store a mapping relationship between the load connected to the second bus M2 and the number of voltage conversion modules in the service board connected to the second bus M2; and the control module 306 determines part of the voltage conversion modules in the service board connected to the second bus M2 to be closed or opened based on the load connected to the second bus M2 and the mapping relationship.

[0168] The control module 306 can also control part of the voltage conversion modules in the service board connected to the third bus M3 to be closed or opened according to the load connected to the third bus M3.

[0169] Specifically, the control module 306 can pre-store a mapping relationship between the load connected to the third bus M3 and the number of voltage conversion modules in the service board connected to the third bus M3; and the control module 306 determines part of the voltage conversion modules in the service board connected to the third bus M3 to be closed or opened based on the load connected to the third bus M3 and the mapping relationship.

[0170] In an embodiment, the power supply system can include the control module 306 and / or the control module 307.

[0171] The control module 306 can be wholly or partially arranged in the backboard 302; or the control module 306 can also be wholly or partially arranged in the service board connected to the second bus M2. The control module 307 can be one or more. The control module 307 can be wholly or partially arranged in the backboard 302; or the control module 307 can also be wholly or partially arranged in the service board connected to the third bus M3. The embodiments of the present application do not make specific limitations in this regard.

[0172] The control module 306 can control part of the voltage conversion modules in the service board connected to the second bus M2 to be closed or opened according to the load connected to the second bus M2.

[0173] The control module 307 can control part of the voltage conversion modules in the service board connected to the third bus M3 to be closed or opened according to the load connected to the third bus M3.

[0174] In an embodiment, the power supply system can further include more buses to provide more working voltages of different sizes, and the embodiments of the present application do not make specific limitations in this regard.

[0175] In this way, the power supply system includes buses of different voltage sizes to provide working voltages of different sizes, which can meet the power supply requirements of each service board in the power supply system.

[0176] In an embodiment, FIG. 10 shows a flowchart of a power supply control method provided by the embodiment.

[0177] As shown in FIG. 10, the method comprises steps S101-S104:

[0178] S101, the control module receives the detection signal from the detection module.

[0179] The control module can receive the detection signal from N detection modules, which can represent the load connected to the second bus.

[0180] For example, the detection module can be a current detection module for detecting the load current connected to the second bus, and the control module can receive the current detection signal from N current detection modules.

[0181] In an embodiment, the N detection modules are specifically used to detect the load current of each of the Q service single boards.

[0182] For example, the control module can determine the load current of each of the Q service single boards based on the current detection signal of the N current detection modules.

[0183] S102, the control module determines that part of the M voltage conversion modules are closed or turned on based on the detection signal.

[0184] Optionally, the control module can have a mapping relationship between the load connected to the second bus M2 and the number of voltage conversion modules turned on in the M voltage conversion modules.

[0185] For example, the mapping relationship can be as shown in FIG. 7, and the load current connected to the second bus M2 corresponds to different numbers of voltage conversion modules turned on.

[0186] The control module can determine that part of the M voltage conversion modules are closed or turned on based on the detection signal and the mapping relationship.

[0187] In an embodiment, when the load connected to the second bus is small and H voltage conversion modules in the M voltage conversion modules 304 need to be closed, the H voltage conversion modules in the service single board with low load are closed, and H is less than M.

[0188] For example, the control module can determine the load current of each of the Q service single boards based on the current detection signal of the N current detection modules, and determine to close H voltage conversion modules in the service single board with smaller load current in the Q service single boards.

[0189] S103, the control module sends a control signal to the voltage conversion module to control part of the M voltage conversion modules to be closed or turned on.

[0190] For example, the control module can send a control signal to the H voltage conversion modules, instructing the H voltage conversion modules to turn off. Alternatively, the control module can send a control signal to the M voltage conversion modules, instructing the H voltage conversion modules to turn off and instructing the other voltage conversion modules to turn on.

[0191] S104, turning off or turning on part of the M voltage conversion modules.

[0192] The voltage conversion modules turn on or turn off according to the control signal from the control module.

[0193] Thus, in the above power supply method, the power supply system uses power supply buses with different voltages to supply power to the load, which can reduce DC loss in the power supply process and provide voltage conversion efficiency of the voltage conversion module, thereby improving the power supply efficiency.

[0194] It should be noted that the names of the modules involved in the embodiments of the present application can be defined as other names, as long as the functions of the modules can be realized, and the names of the modules are not limited specifically.

[0195] The chip system according to the embodiments of the present application can also include other discrete devices, which are not limited specifically in the embodiments of the present application.

[0196] The embodiments of the present application also provide a computer readable storage medium. The computer readable storage medium stores a computer program. The computer program is executed by a processor to implement the above method. The method described in the above embodiments can be implemented by software, hardware, firmware or any combination thereof, in whole or in part. If implemented in software, the functions can be stored as one or more instructions or codes on a computer readable medium or transmitted on a computer readable medium. The computer readable medium can include computer storage medium and communication medium, and can also include any medium that can transfer computer programs from one place to another. The storage medium can be any target medium that can be accessed by a computer.

[0197] In a possible implementation, the computer readable medium can include a RAM, a ROM, a compact disc read-only memory (CD-ROM) or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that is suitable for storing desired program code in the form of instructions or data structures and that can be accessed by a computer. Also, any connection is properly termed a computer readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium. Disk and disc, as used herein, include compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk, and Blu-ray® disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer readable media.

[0198] The embodiment of the present application provides a computer program product, which comprises a computer program, and when the computer program is executed, the computer program causes the computer to execute the method.

[0199] Those skilled in the art can clearly understand the computer readable medium, the computer program product and the computer through the description of the above embodiments. For the convenience and brevity of description, only the division of the above functional modules is taken as an example. In actual application, the above functions can be completed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. The specific working process of the system, device and module described above can refer to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0200] In the several embodiments provided in the present application, it should be understood that the disclosed device and method can be implemented in other ways. For example, the device embodiments described above are only schematic. The division of the modules or units is only a logical function division, and there can be another division manner in actual implementation. For example, a plurality of units or components can be combined or integrated into another device, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interface, device or unit, and can be electrical, mechanical or other forms.

[0201] The units described as separate components may or may not be physically separate, and the components displayed as units may be a physical unit or multiple physical units, that is, may be located in one place, or also can be distributed to multiple different places. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment scheme.

[0202] In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can be physically present alone, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0203] The integrated unit, if realized in the form of a software functional unit and sold or used as an independent product, can be stored in a readable storage medium. Based on such understanding, the technical scheme of the embodiments of the present application essentially or the part that contributes to the prior art or the whole or part of the technical scheme can be embodied in the form of a software product, which is stored in a storage medium and includes a plurality of instructions for causing an apparatus (which can be a single-chip microcomputer, a chip, etc.) or a processor to execute all or part of the steps of the method described in the embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various program code storage media.

[0204] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any change or replacement within the technical scope disclosed in the present application should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A power supply system, characterized in that, The power supply system includes: a first busbar, a second busbar, M voltage conversion modules, N detection modules, and a control module, where M is an integer greater than 1 and N is a positive integer; The input terminals of the M voltage conversion modules are all connected to the first bus, and the output terminals of the M voltage conversion modules are all connected to the second bus. The first busbar is used to transmit the first voltage; The second bus is used to transmit a second voltage, which is different from the first voltage. The voltage conversion module is used to convert the first voltage into the second voltage; The N detection modules are used to detect the load connected to the second bus. The control module is used to control some of the M voltage conversion modules to be turned off or on according to the load connected to the second bus. The fewer the load connected to the second bus, the more voltage conversion modules among the M voltage conversion modules will be turned off.

2. The power supply system according to claim 1, characterized in that, The power supply system further includes Q circuit boards, where Q is an integer greater than 1, and each circuit board includes at least one voltage conversion module, at least one detection module, and / or at least one load; The N detection modules are specifically used to detect the load of each of the Q circuit boards; The control module is specifically used to obtain the load connected to the second bus based on the load of each of the Q circuit boards, and to control the shutdown of H voltage conversion modules based on the load connected to the second bus. The circuit boards where the H voltage conversion modules are located are the circuit boards with low loads among the Q circuit boards, and H is less than M.

3. The power supply system according to claim 1 or 2, characterized in that, There is a mapping relationship between the load connected to the second bus and the number of voltage conversion modules that are turned on. The control module is specifically used to control some of the M voltage conversion modules to turn off or on based on the load connected to the second bus and the mapping relationship.

4. The power supply system according to claim 3, characterized in that, The N detection modules are current detection modules, and the mapping relationship is specifically the mapping relationship between the total current of the load connected to the second bus and the number of voltage conversion modules turned on.

5. The power supply system according to any one of claims 1-4, characterized in that, The power supply system also includes a backplane. The backplane is provided with one or more of the following: the first busbar, the second busbar, the control module, some or all of the N detection modules, or some or all of the M voltage conversion modules; Alternatively, the control module can be located on any of the circuit boards; Alternatively, some or all of the N detection modules may be deployed on Q circuit boards; Alternatively, some or all of the M voltage conversion modules may be deployed on the Q circuit boards.

6. The power supply system according to claim 5, characterized in that, Some or all of the N detection modules are connected to the control module through the backplane, and / or some or all of the M voltage conversion modules are connected to the control module through the backplane.

7. The power supply system according to claim 6, characterized in that, Q is equal to M, and each of the circuit boards includes a voltage conversion module and a detection module.

8. The power supply system according to any one of claims 5-7, characterized in that, The Q circuit boards include one or more of the following: baseband board or main control board.

9. A power supply control method, characterized in that, Applied to control modules, including: Receive detection signals from N detection modules; the N detection modules are used to detect loads connected to the second bus; N is a positive integer; Based on the N detection signals, it is determined whether some of the M voltage conversion modules are turned off or on; where M is an integer greater than 1. Control some of the M voltage conversion modules to turn off or on.

10. A base station, characterized in that, Including the power supply system as described in claims 1-8.

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