Power supply control system, power supply control method, and communication device

Abstract

The invention provides a power supply control system, a power supply control method and communication equipment. The power supply control system comprises a voltage conversion unit, a first change-over switch unit and a second change-over switch unit, the input end of the voltage conversion unit is coupled with a first direct-current power supply, and the output end of the voltage conversion unit is coupled with the input end of the first change-over switch unit and the input end of the second change-over switch unit; the output end of the first change-over switch unit is coupled with the control end of a first circuit breaker, the input end of the first circuit breaker is coupled with a second direct-current power supply, and the output end of the first circuit breaker is coupled with a first load; the output end of the second change-over switch unit is coupled with the control end of a second circuit breaker, the input end of the second circuit breaker is coupled with a third direct-current power supply, and the output end of the second circuit breaker is coupled with a second load. According to the application, the load can be controlled to be connected or disconnected with the direct-current power supply only by arranging one voltage conversion unit and the change-over switch units corresponding to the circuit breakers, and the production cost is low.

Description

[0001] This application is a divisional application. The application number of the original application is 202110715219X, and the original application date is June 26, 2021. The entire contents of the original application are incorporated into this application by reference. Technical Field

[0002] The present application relates to the field of power supply technology, and in particular to a power supply control system, a power supply control method and a communication device. Background Art

[0003] The power supply control system in the communication equipment needs to have the function of remotely controlling the load to connect or disconnect the power supply. Figure 1 In the power supply control system shown, a voltage conversion unit is provided for each circuit breaker, wherein each circuit breaker has a built-in motor. The voltage conversion unit can output a positive voltage or a negative voltage. When the voltage conversion unit outputs a positive voltage, the motor rotates forward, and the circuit breaker where the motor is located is closed; when the voltage conversion unit outputs a negative voltage, the motor rotates reversely, and the circuit breaker where the motor is located is opened. In other words, the prior art controls the closing and opening of the circuit breaker by controlling the positive and negative output voltage of the voltage conversion unit, thereby controlling whether the load connected in series at one end of the circuit breaker is connected or disconnected, and whether the DC power supply connected in series at the other end of the circuit breaker is connected or disconnected. Each circuit breaker in the prior art is equipped with a voltage conversion unit, and the production cost is high. Summary of the invention

[0004] The present application provides a power supply control system, a power supply control method and a communication device, which can reduce production costs and save space occupied by the power supply control system.

[0005] In the first aspect, an embodiment of the present application provides a power supply control system, which is arranged between a first DC power supply and a circuit breaker, wherein the circuit breaker includes a first circuit breaker and a second circuit breaker; the power supply control system includes a voltage conversion unit, a first switching switch unit, and a second switching switch unit. The input end of the voltage conversion unit is coupled to the first DC power supply, and the output end of the voltage conversion unit is respectively coupled to the input end of the first switching switch unit and the input end of the second switching switch unit; the voltage conversion unit can output a first voltage or a second voltage. The output end of the first switching switch unit is coupled to the control end of the first circuit breaker, the input end of the first circuit breaker is coupled to the second DC power supply, the output end of the first circuit breaker is coupled to the first load, and the first switching switch unit can control the connection or disconnection between the first circuit breaker and the voltage conversion unit. The output end of the second switching switch unit is coupled to the control end of the second circuit breaker, the input end of the second circuit breaker is coupled to the third DC power supply, and the output end of the second circuit breaker is coupled to the second load; the second switching switch unit can control the connection or disconnection between the second circuit breaker and the voltage conversion unit.

[0006] In the embodiment of the present application, the voltage conversion unit can output the first voltage or the second voltage. However, compared with the prior art in which a voltage conversion unit is provided for each circuit breaker, and the circuit breaker is controlled to be closed or disconnected by the first voltage or the second voltage output by the voltage conversion unit, the embodiment of the present application controls the connection or disconnection between the circuit breaker and the voltage conversion unit by adding a switching unit (such as a first switching unit, a second switching unit, etc.), thereby controlling the closing or disconnection of the circuit breaker. In other words, the embodiment of the present application is to control the closing or disconnection of the circuit breaker by the voltage conversion unit and the switching unit. The embodiment of the present application only needs to be equipped with a voltage conversion unit and a switching unit corresponding to each circuit breaker, so that the power supply control system can control the load to connect or disconnect the DC power supply, reducing the number of voltage conversion units used. Even if the embodiment of the present application needs to add a switching unit, the cost of the switching unit is lower than that of the voltage conversion unit, so in general, the embodiment of the present application has a lower production cost than the prior art in which a circuit breaker is required to be provided with a voltage conversion unit, and has good applicability. Furthermore, the voltage conversion unit is bulky and occupies a relatively large space in the power supply control system. Therefore, in addition to reducing production costs, the embodiments of the present application also save space occupied by the power supply control system.

[0007] In combination with the first aspect, in a first possible implementation method, when the first circuit breaker is connected to the voltage conversion unit, the first circuit breaker can be closed when receiving the first voltage output by the voltage conversion unit, so that the second DC power supply is connected to the first load; or, when the first circuit breaker is connected to the voltage conversion unit, the first circuit breaker can be opened when receiving the second voltage output by the voltage conversion unit, so that the second DC power supply is disconnected from the first load.

[0008] In combination with the first aspect or the first possible implementation method of the first aspect, in a second possible implementation method, when the first circuit breaker and the voltage conversion unit are disconnected, even if the output voltage of the voltage conversion unit changes, the on-off state of the first circuit breaker does not change, and the on-off state between the second DC power supply and the first load does not change.

[0009] In combination with the first aspect or the first possible implementation of the first aspect, in a third possible implementation, when the second circuit breaker is connected to the voltage conversion unit, the second circuit breaker can be closed when receiving the first voltage output by the voltage conversion unit, so that the third DC power supply is connected to the second load; or, when the second circuit breaker is connected to the voltage conversion unit, the second circuit breaker can be opened when receiving the second voltage output by the voltage conversion unit, so that the third DC power supply is disconnected from the second load.

[0010] In combination with the first aspect or the third possible implementation method of the first aspect, in a fourth possible implementation method, when the second circuit breaker is disconnected from the voltage conversion unit, even if the output voltage of the voltage conversion unit changes, the on-off state of the second circuit breaker does not change, and the on-off state between the third DC power supply and the second load does not change.

[0011] In combination with the first aspect or any one of the possible implementations of the first aspect, in a fifth possible implementation, the voltage conversion unit may transmit the first voltage or the second voltage to the first circuit breaker through the first switching switch unit, and may transmit the first voltage or the second voltage to the second circuit breaker through the second switching switch unit. The first circuit breaker or the second circuit breaker is closed when receiving the first voltage, and the first circuit breaker and the second circuit breaker are opened when receiving the second voltage. In other words, the voltage conversion unit and the first switching switch unit jointly control the closing or opening of the first circuit breaker, and the voltage conversion unit and the second switching switch unit jointly control the closing or opening of the second circuit breaker.

[0012] In combination with the first possible implementation of the first aspect to the fifth possible implementation of the first aspect, in a sixth possible implementation, when the power consumption of the first load is greater than the preset power consumption, the voltage conversion unit can output the first voltage, the first switching unit controls the connection between the first circuit breaker and the voltage conversion unit, and the second switching unit controls the disconnection between the second circuit breaker and the voltage conversion unit, so that the first circuit breaker is disconnected and the on-off state of the second circuit breaker does not change. The embodiment of the present application can disconnect the load from the DC power supply when the power consumption of the load exceeds the preset power consumption, which is convenient and reliable.

[0013] In combination with the first aspect or any one of the possible implementations of the first aspect, in a seventh possible implementation, the power supply control system further includes at least one third circuit breaker; the output end of the first switching switch unit is also coupled to the control end of the third circuit breaker, and the first switching switch unit can also control the connection or disconnection between the third circuit breaker and the voltage conversion unit. In this embodiment of the application, the first circuit breaker can share the first switching switch unit with the third circuit breaker, which can further reduce the cost of the power supply control system.

[0014] In combination with the first aspect or any one of the possible implementations of the first aspect, in an eighth possible implementation, the voltage conversion unit includes at least two voltage conversion sub-units, wherein the voltage conversion sub-units are connected in parallel; the input end of each voltage conversion sub-unit is coupled to the first DC power supply, and the output end of each voltage conversion sub-unit is coupled to the input end of the first switching switch unit and the input end of the second switching switch unit. In the embodiment of the present application, the voltage conversion sub-units back up each other, which can improve the reliability of the power supply control system.

[0015] In combination with the first possible implementation of the first aspect or in combination with the second possible implementation of the first aspect, in a ninth possible implementation, when the first circuit breaker is disconnected, the first switching switch unit can control the disconnection between the first circuit breaker and the voltage conversion unit.

[0016] In combination with the first possible implementation of the first aspect to the fifth possible implementation of the first aspect, in a tenth possible implementation, when the second circuit breaker is disconnected, the second switching switch unit can control the disconnection between the second circuit breaker and the voltage conversion unit.

[0017] In combination with the first aspect or any one of the possible implementations of the first aspect, in an eleventh possible implementation, when the first circuit breaker is disconnected from the voltage conversion unit, and when the second circuit breaker is disconnected from the voltage conversion unit, the voltage conversion unit may stop outputting voltage. By implementing the embodiments of the present application, the power consumption of the power supply control system can be reduced.

[0018] In combination with the first aspect or any one of the above possible implementations of the first aspect, in a twelfth possible implementation, the power supply control system also includes a first controller, which is coupled to the control end of the voltage conversion unit, and the first controller can control the voltage conversion unit to output the first voltage or the second voltage, or control the voltage conversion unit to stop outputting voltage.

[0019] In combination with the first aspect or in combination with any one of the first possible implementation manner of the first aspect to the eleventh possible implementation manner of the first aspect, in a thirteenth possible implementation manner, the power supply control system further includes a second controller, which is coupled to the control end of the first switching switch unit, and the second controller can control the connection or disconnection of the first switching switch unit to achieve connection or disconnection between the first circuit breaker and the voltage conversion unit.

[0020] In combination with the twelfth possible implementation method of the first aspect, in the fourteenth possible implementation method, the above-mentioned first controller can also be coupled to the control end of the above-mentioned first switching switch unit, and the first controller can control the above-mentioned first switching switch unit to be connected or disconnected to achieve connection or disconnection between the above-mentioned first circuit breaker and the above-mentioned voltage conversion unit.

[0021] In combination with the first aspect or in combination with any one of the first possible implementation manner to the eleventh possible implementation manner of the first aspect, in a fifteenth possible implementation manner, the power supply control system further includes a third controller, which is coupled to the control end of the second switching switch unit, and the third controller can control the second switching switch unit to be connected or disconnected to achieve connection or disconnection between the second circuit breaker and the voltage conversion unit.

[0022] In combination with the thirteenth possible implementation method of the first aspect, in the sixteenth possible implementation method, the above-mentioned second controller can also be coupled to the control end of the above-mentioned second switching switch unit, and the second controller can also control the above-mentioned second switching switch unit to be connected or disconnected, so as to realize the connection or disconnection between the above-mentioned second circuit breaker and the above-mentioned voltage conversion unit.

[0023] In combination with the fourteenth possible implementation method of the first aspect, in the seventeenth possible implementation method, the above-mentioned first controller can also be coupled to the control end of the above-mentioned second switching switch unit, and the first controller can also control the above-mentioned second switching switch unit to be connected or disconnected to achieve connection or disconnection between the above-mentioned second circuit breaker and the above-mentioned voltage conversion unit.

[0024] In combination with the seventeenth possible implementation method of the first aspect, in the eighteenth possible implementation method, when the power consumption of the above-mentioned first load is greater than the preset power consumption, the above-mentioned first controller can control the above-mentioned voltage conversion unit to output the first voltage, control the first switching switch unit to be turned on, and control the second switching switch unit to be turned off, so that the first circuit breaker is disconnected and the on-off state of the second circuit breaker does not change.

[0025] In second aspect, an embodiment of the present application provides a power supply control method, which includes: when the first switching switch unit is in an on state, the voltage conversion unit transmits a first voltage or a second voltage to the first circuit breaker through the first switching switch unit; the first circuit breaker closes when receiving the first voltage, so that the second DC power supply and the first load are connected, or the first circuit breaker opens when receiving the second voltage, so that the second DC power supply and the second load are disconnected.

[0026] In combination with the second aspect, in a first possible implementation method, the power supply control method further includes: when the first switching switch unit is in an off state, the on / off state of the first circuit breaker does not change, and the on / off state between the second DC power supply and the first load does not change.

[0027] In combination with the second aspect or in combination with the first possible implementation manner of the second aspect, in the second possible implementation manner, the power supply control method further includes: when the second switching switch unit is in an on state, the voltage conversion unit transmits the first voltage or the second voltage to the second circuit breaker through the second switching switch unit; the second circuit breaker closes when receiving the first voltage, so that the third DC power supply and the second load are connected, or the second circuit breaker opens when receiving the second voltage, so that the third DC power supply and the second load are disconnected.

[0028] In combination with the second possible implementation method of the second aspect, in a third possible implementation method, the power supply control method further includes: when the second switching switch unit is in the disconnected state, the on-off state of the second circuit breaker does not change, and the on-off state between the third DC power supply and the second load does not change.

[0029] In combination with the second possible implementation method of the second aspect, in a fourth possible implementation method, the power supply control method further includes: when the power consumption of the first load is greater than the preset power consumption, the voltage conversion unit outputs a second voltage to the first circuit breaker through the first switching switch unit, and the second circuit breaker receives the second voltage and disconnects the circuit breaker.

[0030] In combination with the fourth possible implementation of the second aspect, in a fifth possible implementation, the power supply control method further includes: the second switching switch unit is disconnected, at which time the voltage conversion unit is disconnected from the second circuit breaker, and the on / off state of the second circuit breaker does not change.

[0031] In combination with the second aspect or the first possible implementation of the second aspect, in a sixth possible implementation, the power supply control method further includes: when the first circuit breaker is disconnected, the first switching switch unit is disconnected, and at this time the voltage conversion unit is disconnected from the first circuit breaker.

[0032] In combination with the second aspect or in combination with any one of the first possible implementation manner of the second aspect to the third possible implementation manner of the second aspect, in a seventh possible implementation manner, the power supply control method further includes: when the second circuit breaker is disconnected, the second switching switch unit is disconnected, and at this time the voltage conversion unit and the second circuit breaker are disconnected.

[0033] In combination with the second aspect or any one of the above possible implementations of the second aspect, in an eighth possible implementation, the power supply control method further includes: when the above-mentioned first switching switch unit and the above-mentioned second switching switch unit are both in the disconnected state, the above-mentioned voltage conversion unit stops outputting voltage.

[0034] In combination with the second aspect or in combination with any one of the first possible implementation manner of the second aspect to the third possible implementation manner of the second aspect, in a ninth possible implementation manner, the first controller may control the voltage conversion unit to output the first voltage or the second voltage, or control the voltage conversion unit to stop outputting the voltage.

[0035] In combination with the second aspect or in combination with any one of the first possible implementation manner of the second aspect to the third possible implementation manner of the second aspect, in a tenth possible implementation manner, the second controller can control the first switching switch unit to be connected or disconnected to achieve connection or disconnection between the above-mentioned first circuit breaker and the above-mentioned voltage conversion unit.

[0036] In combination with the ninth possible implementation manner of the second aspect, in an eleventh possible implementation manner, the first controller may also control the first switching switch unit to be connected or disconnected so as to achieve connection or disconnection between the first circuit breaker and the voltage conversion unit.

[0037] In combination with the second aspect or in combination with any one of the first possible implementation manner of the second aspect to the third possible implementation manner of the second aspect, in a twelfth possible implementation manner, the third controller can control the second switching switch unit to be connected or disconnected to achieve connection or disconnection between the above-mentioned second circuit breaker and the above-mentioned voltage conversion unit.

[0038] In combination with the tenth possible implementation manner of the second aspect, in the thirteenth possible implementation manner, the second controller may also control the second switching switch unit to be connected or disconnected so as to achieve connection or disconnection between the second circuit breaker and the voltage conversion unit.

[0039] In combination with the eleventh possible implementation manner of the second aspect, in the fourteenth possible implementation manner, the above-mentioned first controller can also control the second switching switch unit to be connected or disconnected to achieve connection or disconnection between the above-mentioned second circuit breaker and the above-mentioned voltage conversion unit.

[0040] In a third aspect, an embodiment of the present application provides a communication device, which includes a first DC power supply, a circuit breaker, and a power supply control system as described in the first aspect or in combination with any one of the first aspect, wherein the power supply control system is arranged between the first DC power supply and the circuit breaker.

[0041] It should be understood that the implementation and beneficial effects of the above-mentioned aspects of the present application can be referenced to each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a structural block diagram of a power supply control system in the prior art;

[0043] Figure 2A Schematic diagram of power supply control for closing the circuit breaker;

[0044] Figure 2B A schematic diagram of power supply control for disconnecting the circuit breaker;

[0045] Figure 3 A schematic diagram of a communication device provided in an embodiment of the present application;

[0046] Figure 4 A structural block diagram of a power supply control system provided in an embodiment of the present application;

[0047] Figure 5 Another structural block diagram of the power supply control system provided in the embodiment of the present application;

[0048] Figure 6 Another structural block diagram of the power supply control system provided in the embodiment of the present application;

[0049] Figure 7Another structural block diagram of the power supply control system provided in the embodiment of the present application;

[0050] Figure 8 A schematic diagram of a state of a power supply control system when a circuit breaker is closed provided in an embodiment of the present application;

[0051] Fig. 9 A schematic diagram of a state of a power supply control system when a circuit breaker is tripped provided in an embodiment of the present application;

[0052] Fig.10 A schematic diagram of a state of a power supply control system when a circuit breaker state is maintained provided in an embodiment of the present application;

[0053] Fig.11 A schematic diagram of another state of the power supply control system when the circuit breaker is closed provided in an embodiment of the present application;

[0054] Fig.12 This is another state schematic diagram of the power supply control system when the circuit breaker provided in the embodiment of the present application is tripped. DETAILED DESCRIPTION

[0055] In order to better understand the present application, the working principle of the circuit breaker is first introduced below.

[0056] See also Figure 2A , Figure 2A This is a schematic diagram of power supply control for closing the circuit breaker. Figure 2A As shown, the DC power supply 1 outputs DC power to the voltage conversion units (eg, the voltage conversion unit 1, the voltage conversion unit 2, and the voltage variation unit N), where N is an integer greater than 2. Figure 2A The bold black line represents the positive pole of the direct current, such as +12V, +24V, +48V or +60V, etc.; the thin black line represents the negative pole of the direct current, such as -12V, -24V, -48V or -60V. The thin black line can also be a reference ground wire, which is used to transmit a 0V voltage. The voltage magnitude of the direct current is the difference between the positive pole and the negative pole. The voltage conversion unit can output a positive voltage (i.e., a first voltage) based on the direct current. At this time, the positive input port of the circuit breaker (such as circuit breaker 1, circuit breaker 2, and circuit breaker N, etc.) is connected to the positive pole of the first voltage, and the negative input port of the circuit breaker is connected to the negative pole of the first voltage. The motor built into the circuit breaker rotates forward, and the circuit breaker is closed, so that the DC power supply connected in series at both ends of the circuit breaker is connected to the load. For example, when circuit breaker 1 is closed, DC power supply 2 is connected to load 1; when circuit breaker 2 is closed, DC power supply 3 is connected to load 2; when circuit breaker N is closed, DC power supply N+1 is connected to load N.

[0057] See also Figure 2B , Figure 2B This is a schematic diagram of power supply control when the circuit breaker is disconnected. Figure 2BAs shown, the DC power supply 1 is still Figure 2A Transmitting direct current to the voltage conversion unit, Figure 2B The bold black line represents the positive pole of the DC power, such as +12V, +24V, +48V or +60V, etc.; the thin black line represents the negative pole of the DC power, such as -12V, -24V, -48V or -60V. The thin black line can also be a reference ground wire, which is used to transmit a 0V voltage. The DC power transmitted by the DC power supply to the voltage conversion unit does not change. However, the voltage conversion unit can output a negative voltage (i.e., a second voltage) based on the DC power. At this time, the positive input port of the circuit breaker is connected to the negative pole of the second voltage, and the negative input port of the circuit breaker is connected to the positive pole of the second voltage. The motor built into the circuit breaker rotates in the opposite direction, and the circuit breaker is disconnected, so that the DC power supply connected in series at both ends of the circuit breaker is disconnected from the load. For example, when circuit breaker 1 is disconnected, DC power supply 2 disconnects load 1; when circuit breaker 2 is disconnected, DC power supply 3 disconnects load 2; when circuit breaker N is disconnected, DC power supply N+1 disconnects load N.

[0058] It can be understood that each voltage conversion unit can independently output the first voltage or the second voltage to the corresponding circuit breaker. For example, voltage conversion unit 1 can output the first voltage to circuit breaker 1, and voltage conversion unit 2 can output the second voltage to circuit breaker 2. When circuit breaker 1 is closed, DC power supply 2 is connected to load 1; when circuit breaker 2 is opened, DC power supply 3 is disconnected from load 2.

[0059] Each voltage conversion unit can be specifically implemented as a dual power supply circuit, which includes a semiconductor switch or a mechanical switch, etc. The controller controls the on and off of each switch to switch the output of the first voltage or the second voltage. The specific implementation can refer to the existing technology and will not be described here. Alternatively, the voltage conversion unit can also be a finished product produced by a manufacturer, and this application does not limit the voltage conversion unit.

[0060] It should be noted that the circuit breaker involved in this application can be understood as a switch device including a motor. For example, if the motor is built into an air switch, the circuit breaker in this application can be replaced by an air switch; if the motor is built into a relay, the circuit breaker in this application can be replaced by a relay; if the motor is built into a contactor, the circuit breaker in this application can be replaced by a contactor, etc. In other words, as long as the device has a motor and a switch built in, and the motor can drive the switch of the device connected in series in the power supply system to open and close, it can be called the circuit breaker of this application.

[0061] The implementation of the technical solution of the present application is further described in detail below in conjunction with the accompanying drawings.

[0062] See also Figure 3 , Figure 3 A schematic diagram of a communication device provided in an embodiment of the present application. Figure 3 As shown, the embodiment of the present application is exemplified by taking the communication device as a base station.

[0063] In a specific implementation, the implementation form of the base station may be different, for example, it may be implemented as a pole-type base station 31, a base station 32 installed on an iron tower, and the like. Both the base station 31 and the base station 32 include a power supply control system 30, and the power supply control system 30 may be placed on the same pole as the communication load (as shown in the base station 31), and the power supply control system 30 may also be installed on an iron tower (as shown in the base station 32). Optionally, the power supply control system in the base station may be placed independently of the communication load, for example, the power supply control system 30 may be placed on a wall (such as a wall-mounted power supply 33), and the wall-mounted power supply 33 may be placed in a machine room. The embodiments of the present application are merely illustrative examples of implementation methods of the base station, and it should be understood that there may be many ways to implement the base station, and there may be many locations for setting the power supply control system, which will not be elaborated here.

[0064] The base station includes a DC power supply, a power supply control system 30 and a communication load. The DC power supply can be a DC power output by a photovoltaic panel (as shown in the base station 31), a DC power converted from an AC power grid, or a DC power output by an energy storage battery. The communication load can be a remote radio frequency unit (RRU) and an antenna, or an active antenna unit (AAU) and other architectures. Furthermore, a lightning rod is also provided on the top of the base station.

[0065] The power supply control system 30 may be integrated into a power distribution box (also referred to as a power distribution subrack). In other words, the power distribution subrack may be provided with a voltage conversion unit 301 , a switching switch unit 302 , a first circuit breaker 303 and a second circuit breaker 304 .

[0066] The voltage conversion unit 301 can output the first voltage or the second voltage, and transmit the first voltage or the second voltage to the circuit breaker (eg, the first circuit breaker 303 , the second circuit breaker 304 , etc.) through the switching unit 302 .

[0067] In some feasible implementations, the power supply control system 30 may further include a controller 305, which may send instruction information to the voltage conversion unit 301, so as to control the voltage conversion unit 301 to output the first voltage or the second voltage, or stop outputting the voltage. Exemplarily, the controller 305 may be a central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. Optionally, the controller 305 may be located in the power distribution frame, or may not be located in the power distribution frame, and the present application does not limit the location of the controller 305.

[0068] The switching unit 302 may be at least one or more of a relay, a semiconductor switch, or an optical coupler, and may control the connection or disconnection between the first circuit breaker 303, the second circuit breaker 304, and the voltage conversion unit 301. In some feasible implementations, the controller 305 may send control information to the switching unit 302 to achieve connection or disconnection between the first circuit breaker 303 and the voltage conversion unit 301, and to achieve connection or disconnection between the second circuit breaker 304 and the voltage conversion unit 301.

[0069] The working principles of the first circuit breaker 303 and the second circuit breaker 304 can be referred to in conjunction with the above FIG. 2A to FIG. 2B The described embodiments are not described in detail here.

[0070] It should be understood that the embodiments of the present application use the communication device as a base station as an example, rather than an exhaustive list. It should be understood that the communication device in the present application can be any electrical device that requires power supply control.

[0071] The embodiment of the present application controls the connection or disconnection between the circuit breaker and the voltage conversion unit by adding a switching switch unit, thereby controlling the closing and opening of the circuit breaker, with low production cost and good applicability.

[0072] Combine the following Figures 4 to 7 right Figure 3 The power supply control system shown in FIG.

[0073] See first Figure 4 , Figure 4 This is a structural block diagram of a power supply control system provided in an embodiment of the present application. Figure 4 As shown, the power supply control system 30 is arranged between the first DC power supply and the circuit breaker (for example, the first circuit breaker 303 and the second circuit breaker 304), and the power supply control system 30 includes a voltage conversion unit 301, a first switching switch unit 302a and a second switching switch unit 302b.

[0074] The input end of the voltage conversion unit 301 is coupled to the first DC power supply, and the output end of the voltage conversion unit 301 is coupled to the input end of the first switching switch unit 302a and the input end of the second switching switch unit 302b. The output end of the first switching switch unit 302a is coupled to the control end of the first circuit breaker 303, the input end of the first circuit breaker 303 is coupled to the second DC power supply, and the output end of the first circuit breaker 303 is coupled to the first load. The output end of the second switching switch unit 302b is coupled to the control end of the second circuit breaker 304, the input end of the second circuit breaker 304 is coupled to the third DC power supply, and the output end of the second circuit breaker 304 is coupled to the second load.

[0075] It should be noted that the "coupling" described in this application refers to direct or indirect connection. For example, A and B are connected, which can be either A and B directly connected or A and B indirectly connected through one or more other electrical components, for example, A and C can be directly connected, and C can be directly connected to B, so that A and B are connected through C.

[0076] Among them, the voltage conversion unit 301 can output the first voltage or the second voltage, the first switching switch unit 302a can control the connection or disconnection between the first circuit breaker 303 and the voltage conversion unit 301, and the second switching switch unit 302b can control the connection or disconnection between the second circuit breaker 304 and the voltage conversion unit 301.

[0077] In some feasible implementations, the specific implementation of the embodiment of the present application can be: when the first switching switch unit 302a is turned on (i.e., the first circuit breaker 303 is connected to the voltage conversion unit 301), the first circuit breaker 303 can receive the first voltage output by the voltage conversion unit 301 and close the switch, so that the second DC power supply is connected to the first load. Alternatively, when the first circuit breaker 303 is connected to the voltage conversion unit 301, the first circuit breaker 303 can also receive the second voltage output by the voltage conversion unit 301 and open the switch, so that the second DC power supply is disconnected from the first load. However, when the first switching switch unit 302a is disconnected (i.e., the first circuit breaker 303 is disconnected from the voltage conversion unit 301), even if the voltage output by the voltage conversion unit 301 changes, the on-off state of the first circuit breaker 303 does not change, so that the on-off state between the second DC power supply and the first load does not change.

[0078] Optionally, in some feasible implementations, the specific implementation of the embodiment of the present application can also be: when the second switching switch unit 302b is turned on (i.e., the second circuit breaker 304 is connected to the voltage conversion unit 301), the second circuit breaker 304 can receive the first voltage output by the voltage conversion unit 301 and close the switch, so that the third DC power supply is connected to the second load. Alternatively, when the second circuit breaker 304 is connected to the voltage conversion unit 301, the second circuit breaker 304 can also receive the second voltage output by the voltage conversion unit 301 and open the switch, so that the third DC power supply is disconnected from the second load. However, when the second switching switch unit 302b is disconnected (i.e., the second circuit breaker 304 is disconnected from the voltage conversion unit 301), even if the voltage output by the voltage conversion unit 301 changes, the on-off state of the second circuit breaker 304 does not change, so that the on-off state between the third DC power supply and the second load does not change.

[0079] It should be understood that the on / off states of the first switch unit 302a and the second switch unit 302b may be the same or different.

[0080] In some feasible implementations, when the first switching switch unit 302a and the second switching switch unit 302b are both turned on, the on-off states of the first circuit breaker 303 and the second circuit breaker 304 are the same. For example, if the voltage conversion unit 301 outputs the first voltage, the first circuit breaker 303 and the second circuit breaker 304 are both closed, so that the second DC power supply is connected to the first load, and the third DC power supply is connected to the second load; if the voltage conversion unit 301 outputs the second voltage, the first circuit breaker 303 and the second circuit breaker 304 are both opened, so that the second DC power supply is disconnected from the first load, and the third DC power supply is disconnected from the second load. It can be understood that when the first switching switch unit 302a and the second switching switch unit 302b are both disconnected, even if the voltage output by the voltage conversion unit 301 changes, the on-off states of the first circuit breaker 303 and the second circuit breaker 304 do not change.

[0081] Optionally, in some feasible embodiments, when the first switching switch unit 302a is turned on and the second switching switch unit 302b is turned off, only the on-off state of the first circuit breaker 303 changes according to whether the voltage conversion unit 301 outputs the first voltage or the second voltage, and the on-off state of the second circuit breaker 304 does not change. For example, if the voltage conversion unit 301 outputs the first voltage, the first circuit breaker 303 is closed, and the on-off state of the second circuit breaker 304 does not change, so that the second DC power supply is connected to the first load, and the on-off state between the third DC power supply and the second load does not change; if the voltage conversion unit 301 outputs the second voltage, the first circuit breaker 303 is turned off, and the on-off state of the second circuit breaker 304 does not change, so that the second DC power supply is disconnected from the first load, and the on-off state between the third DC power supply and the second load does not change.

[0082] In summary, the voltage conversion unit 301 closes or opens the circuit breaker by outputting the first voltage or the second voltage; the on-off state of the first switching switch unit 302a determines whether the voltage output by the voltage conversion unit 301 can be transmitted to the first circuit breaker 303, and the on-off state of the second switching switch unit 302b determines whether the voltage output by the voltage conversion unit 301 can be transmitted to the second circuit breaker 304. In other words, the voltage conversion unit 301 and the first switching switch unit 302a jointly control the on-off state of the first circuit breaker 303, and the voltage conversion unit 301 and the second switching switch unit 302b jointly control the on-off state of the second circuit breaker 304.

[0083] Exemplarily, how the voltage conversion unit 301 determines to output the first voltage or the second voltage is described below. In some feasible implementations, the power supply control system 30 may further include a first controller, which is coupled to the control end of the voltage conversion unit 301, and the first controller may control whether the voltage conversion unit 301 outputs the first voltage or the second voltage. Exemplarily, the first controller may send an indication message to the voltage conversion unit 301 when a power-on or power-off request of a load (e.g., a first load, a second load, etc.) is obtained. For example, when the first controller obtains a power-on request for the first load, the first indication message is sent to the voltage conversion unit 301 to instruct the voltage conversion unit 301 to output the first voltage. For another example, when the first controller obtains a power-off request for the second load, the second indication message is sent to the voltage conversion unit 301 to instruct the voltage conversion unit 301 to output the second voltage.

[0084] Optionally, the power-on request or power-off request of the load may be generated by the first controller detecting the button state corresponding to the load. For example, the first controller detects that the first button is in a released state, and generates a power-on request for the first load; the first controller detects that the first button is in a pressed state, and generates a power-off request for the first load. For another example, the first controller detects that the second button is in a released state, and generates a power-on request for the second load; the first controller detects that the second button is in a pressed state, and generates a power-off request for the second load. Alternatively, the power-on request or power-off request of the load may also be generated by the first controller detecting whether the temperature of the load is within a safe temperature range. For example, the first controller detects that the temperature of the first load is within a safe temperature range, and generates a power-on request for the first load; the first controller detects that the temperature of the first load is not within a safe temperature range, and generates a power-off request for the first load. For another example, the first controller detects that the temperature of the second load is within a safe temperature range, and generates a power-on request for the second load; the first controller detects that the temperature of the second load is not within a safe temperature range, and generates a power-off request for the second load. Optionally, the power-on request of each load may also be sent to the first controller by other devices independent of the power supply control system 30 .

[0085] Alternatively, the voltage conversion unit 301 can determine whether to output the first voltage or the second voltage based on the voltage of the first DC power supply. For example, when the voltage of the first DC power supply is lower than the first voltage value or higher than the second voltage value, it can be understood that the first DC power supply is abnormal, and the voltage conversion unit 301 outputs the second voltage; if the voltage of the first DC power supply is between the first voltage value and the second voltage value, it can be understood that the first DC power supply is in a normal state, and the voltage conversion unit 301 outputs the first voltage.

[0086] Optionally, in some feasible embodiments, the first controller may monitor the power consumption of the load and issue indication information based on the power consumption of the load. For example, when the first controller monitors that the power consumption of the first load is not greater than the first preset power consumption, and the power consumption of the second load is not greater than the second preset power consumption, the first controller issues a first indication information to the voltage conversion unit 301 to instruct the voltage conversion unit 301 to output a first voltage. For another example, when the first controller monitors that the power consumption of the first load is greater than the first preset power consumption, or the power consumption of the second load is greater than the second preset power consumption, the first controller issues a second indication information to the voltage conversion unit 301 to instruct the voltage conversion unit 301 to output a second voltage. It should be noted that the first preset power consumption can be understood as the available power that the user recharges for the first load, and the second preset power consumption can be understood as the available power that the user recharges for the second load.

[0087] Exemplarily, how the first switch unit 302a and the second switch unit 302b switch between on and off is described below.

[0088] In some feasible implementations, the power supply control system 30 may further include a second controller, which is coupled to the control end of the first switching switch unit 302a, and the second controller may control the first switching switch unit 302a to be connected or disconnected, thereby realizing the connection or disconnection between the first circuit breaker 303 and the voltage conversion unit 301. For example, when the second controller obtains a power-on request for the first load, it may send first control information to the first switching switch unit 302a to control the first switching switch unit 302a to be turned on. For another example, when the second controller obtains a power-off request for the first load, it may send second control information to the first switching switch unit 302a to control the first switching switch unit 302a to be disconnected.

[0089] Alternatively, the first switching switch unit 302a can determine whether to turn on or off according to the current flowing through a branch in the power supply control system. For example, when the current in the voltage conversion unit 301 is greater than the safety current, the first switching switch unit 302a is disconnected, so that the voltage output by the voltage conversion unit 301 cannot be transmitted to the first circuit breaker 303, thereby protecting the first circuit breaker 303. When the current in the voltage conversion unit 301 is within the safety current range, the first switching switch unit 302a is turned on, and the voltage output by the voltage conversion unit 301 can be transmitted to the first circuit breaker 303.

[0090] Optionally, in some feasible embodiments, the second controller may monitor the power consumption of the first load and send control information based on the power consumption of the first load. For example, when the second controller monitors that the power consumption of the first load is not greater than the first preset power consumption, the second controller sends the first control information to the first switching switch unit 302a to control the first switching switch unit 302a to be turned on. For another example, when the first controller monitors that the power consumption of the first load is greater than the first preset power consumption, the first controller sends the second control information to the first switching switch unit 302a to control the first switching switch unit 302a to be turned off.

[0091] Similarly, in some feasible implementations, the power supply control system may further include a third controller, which is coupled to the control end of the second switching switch unit 302b, and the third controller may control the second switching switch unit 302b to be connected or disconnected, thereby realizing the connection or disconnection between the second circuit breaker 304 and the voltage variation unit 301. For example, when the third controller obtains a power-on request for the second load, it may send third control information to the second switching switch unit 302b to control the second switching switch unit 302b to be turned on. For another example, when the third controller obtains a power-off request for the second load, it may send fourth control information to the second switching switch unit 302b to control the second switching switch unit 302b to be disconnected.

[0092] Alternatively, the second switching switch unit 302b determines whether to turn on or off based on the current flowing through a branch in the power supply control system. For example, when the current in the voltage conversion unit 301 is greater than the safety current, the second switching switch unit 302b is disconnected, so that the voltage output by the voltage conversion unit 301 cannot be transmitted to the second circuit breaker 304, thereby protecting the second circuit breaker 304. When the current in the voltage conversion unit 301 is within the safety current range, the second switching switch unit 302b is turned on, and the voltage output by the voltage conversion unit 301 can be transmitted to the second circuit breaker 304.

[0093] Optionally, in some feasible embodiments, the third controller may monitor the power consumption of the second load and send control information based on the power consumption of the second load. For example, when the third controller monitors that the power consumption of the second load is not greater than the second preset power consumption, the third controller sends third control information to the second switching switch unit 302b to control the second switching switch unit 302b to be turned on. For another example, when the third controller monitors that the power consumption of the second load is greater than the second preset power consumption, the third controller sends fourth control information to the second switching switch unit 302b to control the second switching switch unit 302b to be turned off.

[0094] It can be understood that the above-mentioned first controller, second controller and third controller can be the same controller or different controllers, and the above-mentioned first DC power supply, second DC power supply and third DC power supply can be the same DC power supply or different DC power supplies. In the specific implementation, they can be set according to actual conditions. This application does not limit the number of DC power supplies and the number of controllers.

[0095] In some feasible implementations, the first controller may send the first instruction information to the voltage conversion unit 301, the second controller may send the first control information to the first switching switch unit 302a, and the third controller may send the third control information to the second switching switch unit 302b. At this time, the voltage conversion unit 301 outputs the first voltage, the first switching switch unit 302a is turned on (i.e., the first circuit breaker 303 is connected to the voltage conversion unit 301), and the second switching switch unit 302b is turned on (i.e., the second circuit breaker 304 is connected to the voltage conversion unit 301). Then the voltage conversion unit 301 may transmit the first voltage to the first circuit breaker 303 through the first switching switch unit 302a, and the voltage conversion unit 301 may also transmit the first voltage to the second circuit breaker 304 through the second switching switch unit 302b. The first circuit breaker 303 and the second circuit breaker 304 are both closed when receiving the first voltage, and the first load is connected to the second DC power supply and the second load is connected to the third DC power supply.

[0096] Further, the first controller may monitor the voltage at the output end of the first circuit breaker 303 and the second circuit breaker 304. For example, if the first controller detects that the voltage at the output end of the first circuit breaker 303 is the target voltage corresponding to the first voltage, such as the voltage of the second DC power supply, it can be understood that the first circuit breaker 303 completes the closing action. And, the first controller detects that the voltage at the output end of the second circuit breaker 304 is the target voltage corresponding to the first voltage, such as the voltage of the third DC power supply, it can be understood that the second circuit breaker 304 completes the closing action. At this time, there is no need for the voltage conversion unit 301 to continue to output voltage, and the first controller can send a third indication message to the voltage conversion unit 301 to instruct the voltage conversion unit 301 to stop outputting voltage and reduce the power consumption of the power supply control system 30.

[0097] Optionally, in some feasible implementations, the first controller may send the first instruction information to the voltage conversion unit 301, the second controller may send the first control information to the first switching switch unit 302a, and the third controller may send the fourth control information to the second switching switch unit 302b. At this time, the voltage conversion unit 301 outputs the first voltage, the first switching switch unit 302a is turned on (i.e., the first circuit breaker 303 is connected to the voltage conversion unit 301), and the second switching switch unit 302b is turned off (i.e., the second circuit breaker 304 is disconnected from the voltage conversion unit 301). Then the voltage conversion unit 301 can transmit the first voltage to the first circuit breaker 303 through the first switching switch unit 302a, however, the voltage conversion unit 301 cannot transmit the first voltage to the second circuit breaker 304 through the second switching switch unit 302b in the disconnected state. The first circuit breaker 303 closes when receiving the first voltage, and the first load is connected to the second DC power supply. However, since the second circuit breaker 304 does not receive the first voltage, the second circuit breaker 304 does not close, and the on / off state of the second circuit breaker 304 does not change. For example, the second circuit breaker 304 is in the closed state before the voltage conversion unit 301 outputs the first voltage. When the second switch unit 302b is in the disconnected state, even if the voltage conversion unit 301 outputs the first voltage, the second circuit breaker 304 is still in the closed state, but at this time, the second circuit breaker 304 and the first circuit breaker 303 are not closed at the same time, and the second circuit breaker 304 is closed before the first circuit breaker 303. Similarly, the second circuit breaker 304 is in the disconnected state before the voltage conversion unit 301 outputs the first voltage. When the second switch unit 302b is in the disconnected state, even if the voltage conversion unit 301 outputs the first voltage, the second circuit breaker 304 is still in the disconnected state.

[0098] Further, the first controller may monitor the voltage at the output end of the first circuit breaker 303. For example, if the first controller detects that the voltage at the output end of the first circuit breaker 303 is the target voltage corresponding to the first voltage, such as the voltage of the second DC power supply, it can be understood that the first circuit breaker 303 completes the closing action. At this time, there is no need for the voltage conversion unit 301 to continue to output voltage, and the first controller may send a third instruction message to the voltage conversion unit 301, instructing the voltage conversion unit 301 to stop outputting voltage, thereby reducing the power consumption of the power supply control system 30.

[0099] Optionally, in some feasible implementations, the first controller may send the second instruction information to the voltage conversion unit 301, the second controller may send the first control information to the first switching unit 302a, and the third controller may send the third control information to the second switching unit 302b. At this time, the voltage conversion unit 301 outputs the second voltage, the first switching unit 302a is turned on (i.e., the first circuit breaker 303 is connected to the voltage conversion unit 301), and the second switching unit 302b is turned on (i.e., the second circuit breaker 304 is connected to the voltage conversion unit 301). Then the voltage conversion unit 301 can transmit the second voltage to the first circuit breaker 303 through the first switching unit 302a, and the voltage conversion unit 301 can also transmit the second voltage to the second circuit breaker 304 through the second switching unit 302b. The first circuit breaker 303 and the second circuit breaker 304 are both disconnected when receiving the second voltage, and the first load disconnects the second DC power supply and the second load disconnects the third DC power supply. In some specific implementations, if the first controller sends the second indication information to the voltage conversion unit 301 because the first controller monitors that the power consumption of the first load is greater than the first preset power consumption or the power consumption of the second load is greater than the second preset power consumption, the second controller sends the first control information to the first switching switch unit 302a because the second controller monitors that the power consumption of the first load is greater than the first preset power consumption, and the third controller sends the third control information to the second switching switch unit 302b because the third controller monitors that the power consumption of the second load is greater than the second preset power consumption. In this case, the following is achieved: when the power consumption of the first load is greater than the first preset power consumption, the second DC power supply cannot be used, and when the power consumption of the second load is greater than the second preset power consumption, the third DC power supply cannot be used, thereby controlling the power consumption of the loads.

[0100] Further, the first controller may monitor the voltage at the output end of the first circuit breaker 303 and the second circuit breaker 304. For example, if the first controller detects that the voltage at the output end of the first circuit breaker 303 is the target voltage corresponding to the second voltage, such as zero, it can be understood that the first circuit breaker 303 completes the disconnection action. And, if the first controller detects that the voltage at the output end of the second circuit breaker 304 is the target voltage corresponding to the second voltage, such as zero, it can be understood that the second circuit breaker 304 completes the disconnection action. At this time, there is no need for the voltage conversion unit 301 to continue to output voltage, and the first controller may send a third indication information to the voltage conversion unit 301 to instruct the voltage conversion unit 301 to stop outputting voltage and reduce the power consumption of the power supply control system 30. Optionally, when the first circuit breaker 303 and the second circuit breaker 304 are disconnected, the first switching switch unit 302a is disconnected, so that the first circuit breaker 303 is disconnected from the voltage conversion unit 301, and the second switching switch unit 302b is disconnected, so that the second circuit breaker 304 is disconnected from the voltage conversion unit 301.

[0101] Optionally, in some feasible implementations, the first controller may send the second instruction information to the voltage conversion unit 301, the second controller may send the first control information to the first switching switch unit 302a, and the third controller may send the fourth control information to the second switching switch unit 302b. At this time, the voltage conversion unit 301 outputs the second voltage, the first switching switch unit 302a is turned on (i.e., the first circuit breaker 303 is connected to the voltage conversion unit 301), and the second switching switch unit 302b is turned off (i.e., the second circuit breaker 304 is disconnected from the voltage conversion unit 301). Then the voltage conversion unit 301 can transmit the second voltage to the first circuit breaker 303 through the first switching switch unit 302a, however, the voltage conversion unit 301 cannot transmit the first voltage to the second circuit breaker 304 through the second switching switch unit 302b in the disconnected state. The first circuit breaker 303 is disconnected when receiving the second voltage, and the first load disconnects the second DC power supply. However, since the second circuit breaker 304 does not receive the second voltage, the second circuit breaker 304 does not break, and the on / off state of the second circuit breaker 304 does not change. For example, the second circuit breaker 304 is in a closed state before the voltage conversion unit 301 outputs the second voltage. When the second circuit breaker 304 is in an open state, even if the voltage conversion unit 301 outputs the second voltage, the second circuit breaker 304 is still in a closed state. In some specific implementations, if the first controller sends the second indication information to the voltage conversion unit 301, it is triggered by the first controller monitoring that the power consumption of the first load is greater than the first preset power consumption, the second controller sends the first control information to the first switching switch unit 302a, which is triggered by the second controller monitoring that the power consumption of the first load is greater than the first preset power consumption, and the third controller sends the fourth control information to the second switching switch unit 302b, which is triggered by the third controller monitoring that the power consumption of the second load is not greater than the second preset power consumption. At this time, when the power consumption of the first load is greater than the first preset power consumption, the second DC power supply cannot be used any more, and when the power consumption of the second load is not greater than the second preset power consumption, the third DC power supply can be used any more, thereby controlling the power consumption of the loads.

[0102] Similarly, the second circuit breaker 304 is in the off state before the voltage conversion unit 301 outputs the second voltage. When the second switching switch unit 302b is in the disconnected state, even if the voltage conversion unit 301 outputs the second voltage, the second circuit breaker 304 is also in the off state, but at this time the second circuit breaker 304 and the first circuit breaker 303 are not opened at the same time, and the second circuit breaker 304 is opened before the first circuit breaker 303.

[0103] Further, the first controller may monitor the voltage at the output end of the first circuit breaker 303 and the second circuit breaker 304. For example, if the first controller detects that the voltage at the output end of the first circuit breaker 303 is the target voltage corresponding to the second voltage, such as zero, it can be understood that the first circuit breaker 303 completes the disconnection action. At this time, there is no need for the voltage conversion unit 301 to continue to output voltage, so the first controller may send a third indication message to the voltage conversion unit 301 to instruct the voltage conversion unit 301 to stop outputting voltage and reduce the power consumption of the power supply control system 30. Optionally, when the first circuit breaker 303 is disconnected, the first switching switch unit 302a is disconnected, so that the first circuit breaker 303 is disconnected from the voltage conversion unit 301.

[0104] In summary, the voltage conversion unit in the embodiment of the present application can output the first voltage or the second voltage, but compared with the prior art in which a voltage conversion unit is equipped for each circuit breaker, the circuit breaker is closed or disconnected by the first voltage or the second voltage output by the voltage conversion unit. The embodiment of the present application controls the connection or disconnection between the circuit breaker and the voltage conversion unit by adding a switching unit (such as a first switching unit, a second switching unit, etc.), thereby controlling the closing or disconnection of the circuit breaker. In other words, the embodiment of the present application is to control the closing or disconnection of the circuit breaker by the voltage conversion unit and the switching unit. The embodiment of the present application only needs to be equipped with a voltage conversion unit and a switching unit corresponding to each circuit breaker, so that the power supply control system can control the load to connect or disconnect the DC power supply, reducing the number of voltage conversion units used. Even if the embodiment of the present application needs to add a switching unit, the cost of the switching unit is lower than that of the voltage conversion unit, so in general, the production cost of the embodiment of the present application is lower than that of the prior art in which a voltage conversion unit is set corresponding to a circuit breaker, and the applicability is good. Furthermore, the voltage conversion unit is bulky and occupies a relatively large space in the power supply control system. Therefore, in addition to reducing production costs, the embodiments of the present application also save space occupied by the power supply control system.

[0105] In some feasible implementations, the power supply control system in the embodiment of the present application further includes at least one third circuit breaker. Figure 5 , Figure 5 This is another structural block diagram of the power supply control system provided in the embodiment of the present application. Figure 5 As shown, Figure 5 The power supply control system 30a shown in the above is combined with Figure 4The difference between the power supply control system 30 described above is that the power supply control system 30a provided in the embodiment of the present application further includes a third circuit breaker 306, the control end of the third circuit breaker 306 is coupled to the output end of the first switching switch unit, the input end of the third circuit breaker 306 is coupled to the fourth DC power supply, and the output end of the third circuit breaker 306 is coupled to the third load. Figure 4 On the basis of the described power supply control system 30, the first switching switch unit can not only control the connection or disconnection between the first circuit breaker and the voltage conversion unit, but also simultaneously control the connection or disconnection between the third circuit breaker 306 and the voltage conversion unit, that is, the on-off state of the first circuit breaker and the third circuit breaker 306 is the same. For example, the first circuit breaker is closed, and the third circuit breaker 306 is also closed. At this time, the second DC power supply is connected to the first load, and the fourth DC power supply is also connected to the third load. For another example, the first circuit breaker is opened, and the third circuit breaker 306 is also opened. At this time, the second DC power supply disconnects the first load, and the fourth DC power supply also disconnects the third load. In other words, the first circuit breaker can share the first switching switch unit with the third circuit breaker 306, further reducing the cost of the power supply control system.

[0106] Optionally, in some feasible implementations, the power supply control system in the embodiment of the present application may include M circuit breakers, where M is an integer greater than 2. Figure 6 , Figure 6 Another structural block diagram of a power supply control system provided in an embodiment of the present application. Figure 6 As shown, the power supply control system 30b is combined with the above Figure 4 The difference between the power supply control system 30 described above is that the power supply control system 30b includes multiple circuit breakers. As the number of circuit breakers increases, the number of switching units also increases accordingly. Figure 4 On the basis of the described embodiment, the control end of the Mth circuit breaker added to the power supply control system 30b is coupled to the output end of the Mth switching switch unit, and the input end of the Mth switching switch unit is coupled to the output end of the voltage conversion unit. The voltage conversion unit can still output the first voltage or the second voltage. The first switching switch unit controls the connection or disconnection between the first circuit breaker and the voltage conversion unit, and the second switching switch unit controls the connection or disconnection between the second circuit breaker and the voltage conversion unit. By analogy, the Mth switching switch unit controls the connection or disconnection between the Mth circuit breaker and the voltage conversion unit, thereby controlling the Mth load to connect or disconnect the M+1th DC power supply. In other words, the present application does not limit the number of circuit breakers and switching switch units.

[0107] Optionally, in some feasible implementations, the power supply control system provided in the embodiment of the present application may include at least two voltage conversion subunits. Figure 7 , Figure 7Another structural block diagram of a power supply control system provided in an embodiment of the present application. Figure 7 As shown, taking the voltage conversion unit in the power supply control system 30c including the voltage conversion subunit 301a and the voltage conversion subunit 301b as an example, the voltage conversion subunit 301a and the voltage conversion subunit 301b are connected in parallel, and the input ends of the voltage conversion subunit 301a and the voltage conversion subunit 301b are coupled to the first DC power supply, and the output ends of the voltage conversion subunit 301a and the voltage conversion subunit 301b are coupled to the input end of the first switching switch unit 302a and the input end of the second switching switch unit 302b. Exemplarily, when the voltage conversion subunit 301a is in a normal working state, the voltage conversion subunit 301b may not work; when the voltage conversion subunit 301a cannot work normally, such as being damaged by lightning, the voltage conversion subunit 301b starts to work. That is, the voltage conversion subunit 301b can be understood as a backup of the voltage conversion subunit 301a, which can improve the reliability of the power supply control system.

[0108] Combine the following Figures 8 to 12 The specific implementation method of the switching switch unit is exemplified.

[0109] In some possible implementations, see Figure 8 , Figure 8 A schematic diagram of a power supply control system when a circuit breaker is closed provided in an embodiment of the present application. Figure 8 As shown, taking the switching unit as a relay as an example, the relay includes eight pins, and the pins are represented by PIN. The control end of the switching unit is the two pins PIN 1 and PIN 8 in the relay, the input end of the switching switch is the two pins PIN 3 and PIN 6 of the relay, and the output end of the switching unit is the two pins PIN 4 and PIN 5 in the relay; PIN 2 and PIN 7 in the relay are two suspended pins and are not connected to other components.

[0110] In a specific implementation, when the voltage conversion unit outputs the first voltage, there is a voltage difference between PIN 1 and PIN 8 of the first relay, and current flows through the coil in the first relay, so that the armature in the first relay hits from PIN 3 to PIN 4 (i.e., PIN 3 is connected to PIN 4), and from PIN 6 to PIN 5 (i.e., PIN 6 is connected to PIN 5), that is, the first circuit breaker is connected to the voltage conversion unit, and the first load is connected to the second DC power supply. At this time, the voltage conversion unit can transmit the first voltage to the first circuit breaker through the first relay, and the first circuit breaker is closed. Similarly, there is a voltage difference between PIN 1 and PIN 8 of the second relay, and current flows through the coil in the second relay, so that the armature in the second relay hits from PIN 3 to PIN 4 (i.e., PIN 3 is connected to PIN 4), and from PIN 6 to PIN 5 (i.e., PIN 6 is connected to PIN 5), that is, the second circuit breaker is connected to the voltage conversion unit. At this time, the voltage conversion unit can transmit the first voltage to the second circuit breaker through the second relay, the second circuit breaker is closed, and the second load is connected to the third DC power supply.

[0111] Optionally, in some possible implementations, see Fig. 9 , Fig. 9 A schematic diagram of a state of a power supply control system when a circuit breaker is disconnected provided in an embodiment of the present application. Fig. 9 As shown, Fig. 9 and Figure 8 The difference is that the voltage output by the voltage conversion unit is the second voltage. At this time, there is a voltage difference between PIN 1 and PIN 8 of the first relay, and current flows through the coil of the first relay, so that the armature in the first relay hits from PIN 3 to PIN 4 (i.e., PIN 3 is connected to PIN 4), and from PIN 6 to PIN 5 (i.e., PIN 6 is connected to PIN 5), that is, the first circuit breaker is connected to the voltage conversion unit. However, the voltage conversion unit transmits the second voltage to the first circuit breaker through the first relay, the first circuit breaker is disconnected, and the first load disconnects the second DC power supply. Similarly, there is a voltage difference between PIN 1 and PIN 8 of the second relay, and current flows through the coil of the second relay, so that the armature in the second relay hits from PIN 3 to PIN 4 (i.e., PIN 3 is connected to PIN 4), and from PIN 6 to PIN 5 (i.e., PIN 6 is connected to PIN 5), that is, the second circuit breaker is connected to the voltage conversion unit. At this time, the voltage conversion unit can transmit the second voltage to the second circuit breaker through the second relay, the second circuit breaker is opened, and the second load disconnects the third DC power supply.

[0112] Depend on Figure 8 and Fig. 9It can be seen that when the circuit breaker is closed or open, PIN 3 is connected to PIN 4, and PIN 6 is connected to PIN 5. The difference is the voltage output by the voltage conversion unit. Figure 8 The voltage output by the medium voltage conversion unit is the first voltage, and the circuit breaker is closed; Fig. 9 The voltage output by the medium voltage conversion unit is the second voltage, and the circuit breaker is tripped.

[0113] Optionally, in some possible implementations, see Fig.10 , Fig.10 A schematic diagram of a power supply control system when the circuit breaker state is maintained according to an embodiment of the present application. Fig.10 As shown, there is no voltage difference between PIN 1 and PIN 8 of the first relay, and no current flows through the coil of the first relay, so that the armature in the first relay stays at PIN 3 connected to PIN 2, and PIN 6 connected to PIN 7, that is, the first circuit breaker is disconnected from the voltage conversion unit. Similarly, there is no voltage difference between PIN 1 and PIN 8 of the second relay, and no current flows through the coil of the second relay, so that the armature in the second relay stays at PIN 3 connected to PIN 2, and PIN 6 connected to PIN 7, that is, the second circuit breaker is disconnected from the voltage conversion unit. At this time, even if the voltage output by the voltage conversion unit changes, the on-off state of the first circuit breaker and the second circuit breaker remains unchanged.

[0114] Optionally, in some feasible implementations, the states of the first circuit breaker and the second circuit breaker may be different. Fig.11 , Fig.11 This is another state diagram of the power supply control system when the circuit breaker is closed provided in the embodiment of the present application. Fig.11 As shown, when the voltage conversion unit outputs the first voltage, there is a voltage difference between PIN 1 and PIN 8 of the first relay, and the coil in the first relay flows with current, so that the armature in the first relay hits from PIN 3 to PIN 4 (i.e., PIN 3 is connected to PIN 4), and from PIN 6 to PIN 5 (i.e., PIN 6 is connected to PIN 5), that is, the connection between the first circuit breaker and the voltage conversion unit. At this time, the voltage conversion unit can transmit the first voltage to the first circuit breaker through the first relay, the first circuit breaker is closed, and the first load is connected to the second DC power supply. However, since there is no voltage difference between PIN 1 and PIN 8 of the second relay, the coil in the second relay does not flow with current, so that the armature in the second relay stays at PIN 3 connecting PIN 2, and PIN 6 connecting PIN 7, that is, the second circuit breaker is disconnected from the voltage conversion unit, and the state of the second circuit breaker does not change.

[0115] Optionally, in some possible implementations, see Fig.12 , Fig.12 This is another state diagram of the power supply control system when the circuit breaker is disconnected provided in the embodiment of the present application. Fig.12 As shown, the voltage conversion unit outputs the second voltage. At this time, there is a voltage difference between PIN 1 and PIN 8 of the first relay, and the coil in the first relay flows through the current, so that the armature in the first relay hits from PIN 3 to PIN 4 (i.e., PIN 3 is connected to PIN 4), and from PIN 6 to PIN 5 (i.e., PIN 6 is connected to PIN 5), that is, the connection between the first circuit breaker and the voltage conversion unit is turned on. However, the voltage conversion unit transmits the second voltage to the first circuit breaker through the first relay, the second circuit breaker is disconnected, and the first load disconnects the second direct power supply. However, since there is no voltage difference between PIN 1 and PIN 8 of the second relay, the coil in the second relay does not flow through the current, so that the armature in the second relay stays at PIN 3 connecting PIN 2, and PIN 6 connecting PIN 7, that is, the connection between the second circuit breaker and the voltage conversion unit is disconnected, and the state of the second circuit breaker does not change at this time.

[0116] It should be noted that the above Figures 8 to 12 The switching unit is specifically implemented as a relay for example. The switching unit in the embodiment of the present application can also be specifically implemented as a semiconductor switch, such as a triode, an insulated gate bipolar transistor (IGBT), a metal oxide semiconductor field effect transistor (MOSFET), etc. The present application does not limit the specific implementation form of the switching unit.

[0117] It should be noted that the above terms “first” and “second” are only used for descriptive purposes and should not be understood as indicating or implying relative importance.

[0118] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A power supply control system, characterized in that: The power supply control system is arranged between the first DC power supply and the circuit breaker, and the circuit breaker includes a first circuit breaker and a second circuit breaker; the power supply control system includes a voltage conversion unit, a first switching switch unit and a second switching switch unit; The input end of the voltage conversion unit is coupled to the first DC power supply, and the output end of the voltage conversion unit is coupled to the input end of the first switching unit and the input end of the second switching unit respectively; The output end of the first switching switch unit is coupled to the control end of the first circuit breaker, the input end of the first circuit breaker is coupled to the second DC power supply, and the output end of the first circuit breaker is coupled to the first load; the first switching switch unit is used to control the connection or disconnection between the first circuit breaker and the voltage conversion unit; The output end of the second switching switch unit is coupled to the control end of the second circuit breaker, the input end of the second circuit breaker is coupled to the third DC power supply, and the output end of the second circuit breaker is coupled to the second load; the second switching switch unit is used to control the connection or disconnection between the second circuit breaker and the voltage conversion unit; The voltage conversion unit is used to output a second voltage, the first switching switch unit is used to control the connection between the first circuit breaker and the voltage conversion unit, and the second switching switch unit is used to control the disconnection between the second circuit breaker and the voltage conversion unit, so that the first circuit breaker is disconnected and the on / off state of the second circuit breaker does not change.

2. The power supply control system according to claim 1, characterized in that: When the first circuit breaker is connected to the voltage conversion unit, the first circuit breaker is used to close when receiving the first voltage output by the voltage conversion unit, so that the second DC power supply is connected to the first load; or, When the first circuit breaker is connected to the voltage conversion unit, the first circuit breaker is used to open the circuit breaker when receiving the second voltage output by the voltage conversion unit, so that the second DC power supply is disconnected from the first load.

3. The power supply control system according to claim 1 or 2, characterized in that: When the first circuit breaker is disconnected from the voltage conversion unit, the on / off state of the first circuit breaker does not change, and the on / off state of the second DC power supply and the first load does not change.

4. The power supply control system according to claim 1 or 2, characterized in that: When the second circuit breaker is connected to the voltage conversion unit, the second circuit breaker is used to close when receiving the first voltage output by the voltage conversion unit, so that the third DC power supply is connected to the second load; or, When the second circuit breaker is connected to the voltage conversion unit, the second circuit breaker is used to open the circuit breaker when receiving the second voltage output by the voltage conversion unit, so that the third DC power supply is disconnected from the second load.

5. The power supply control system according to claim 1 or 4, characterized in that: When the second circuit breaker is disconnected from the voltage conversion unit, the on / off state of the second circuit breaker does not change, and the on / off state between the third DC power supply and the second load does not change.

6. The power supply control system according to any one of claims 2 to 5, characterized in that: When the power consumption of the first load is greater than the preset power consumption, the voltage conversion unit is used to output the second voltage, the first switching switch unit is used to control the connection between the first circuit breaker and the voltage conversion unit, and the second switching switch unit is used to control the disconnection between the second circuit breaker and the voltage conversion unit, so that the first circuit breaker is disconnected and the on / off state of the second circuit breaker does not change.

7. The power supply control system according to any one of claims 1 to 6, characterized in that: The circuit breaker further comprises at least one third circuit breaker; The output end of the first switching switch unit is also coupled to the control end of the third circuit breaker, and the first switching switch unit is also used to control the connection or disconnection between the third circuit breaker and the voltage conversion unit.

8. The power supply control system according to any one of claims 1 to 7, characterized in that: The voltage conversion unit comprises at least two voltage conversion sub-units, wherein the voltage conversion sub-units are connected in parallel; The input end of each voltage conversion subunit is coupled to the first DC power supply, and the output end of each voltage conversion subunit is coupled to the input end of the first switching switch unit and the input end of the second switching switch unit.

9. The power supply control system according to claim 2 or 3, characterized in that: When the first circuit breaker is disconnected, the first switching switch unit is used to control the disconnection between the first circuit breaker and the voltage conversion unit.

10. The power supply control system according to any one of claims 2 to 5, characterized in that: When the second circuit breaker is disconnected, the second switching switch unit is used to control the disconnection between the second circuit breaker and the voltage conversion unit.

11. The power supply control system according to any one of claims 1 to 10, characterized in that: When the first circuit breaker and the voltage conversion unit are disconnected, and when the second circuit breaker and the voltage conversion unit are disconnected, the voltage conversion unit is used to stop outputting voltage.

12. The power supply control system according to any one of claims 1 to 11, characterized in that: The power supply control system further includes a controller; The controller is coupled to the control end of the voltage conversion unit, and is used to control the voltage conversion unit to output the first voltage or the second voltage, or to control the voltage conversion unit to stop outputting the voltage.

13. The power supply control system according to claim 12, characterized in that: The controller is also coupled to a control end of the first switching switch unit, and is used to control the first switching switch unit to be connected or disconnected, so as to achieve connection or disconnection between the first circuit breaker and the voltage conversion unit.

14. The power supply control system according to claim 13, characterized in that: The controller is also coupled to the control end of the second switching switch unit, and the controller is used to control the second switching switch unit to be connected or disconnected, so as to achieve connection or disconnection between the second circuit breaker and the voltage conversion unit.

15. The power supply control system according to claim 14, characterized in that: When the power consumption of the first load is greater than the preset power consumption, the controller is used to control the voltage conversion unit to output the second voltage, control the first switching switch unit to be turned on, and control the second switching switch unit to be turned off, so that the first circuit breaker is disconnected and the on / off state of the second circuit breaker does not change.

16. A power supply control method, characterized in that: The power supply control method comprises: When the first switching switch unit is in an on state, the voltage conversion unit transmits the first voltage or the second voltage to the first circuit breaker through the first switching switch unit; The first circuit breaker is closed when receiving the first voltage, so that the second DC power supply is connected to the first load, or the first circuit breaker is opened when receiving the second voltage, so that the second DC power supply is disconnected from the first load; The voltage conversion unit outputs the second voltage to the first circuit breaker through the first switching switch unit, the first circuit breaker receives the second voltage and opens, and the second switching switch unit is disconnected so that the on-off state of the second circuit breaker does not change, wherein the second switching switch unit is used to control the connection or disconnection between the second circuit breaker and the voltage conversion unit, and when the second switching switch unit is in the disconnected state, the on-off state of the second circuit breaker does not change.

17. The power supply control method according to claim 16, characterized in that: The power supply control method further includes: When the first switching switch unit is in the disconnected state, the on-off state of the first circuit breaker does not change, and the on-off state between the second DC power supply and the first load does not change.

18. The power supply control method according to claim 16 or 17, characterized in that: The power supply control method further includes: When the second switching switch unit is in an on state, the voltage conversion unit transmits the first voltage or the second voltage to the second circuit breaker through the second switching switch unit; The second circuit breaker is closed when receiving the first voltage, so that the third DC power supply is connected to the second load; or the second circuit breaker is opened when receiving the second voltage, so that the third DC power supply is disconnected from the second load.

19. The power supply control method according to claim 18, characterized in that: The power supply control method further includes: When the second switching switch unit is in the disconnected state, the on-off state of the second circuit breaker does not change, and the on-off state between the third DC power supply and the second load does not change.

20. The power supply control method according to claim 18, characterized in that: The power supply control method further includes: When the power consumption of the first load is greater than the preset power consumption, the voltage conversion unit outputs the second voltage to the first circuit breaker through the first switching unit, and the first circuit breaker receives the second voltage and opens.

21. The power supply control method according to claim 20, characterized in that: The power supply control method further includes: The second switch unit is disconnected so that the on / off state of the second circuit breaker does not change.

22. The power supply control method according to claim 16 or 17, characterized in that: The power supply control method further includes: When the first circuit breaker is tripped, the first switch unit is disconnected.

23. The power supply control method according to any one of claims 16 to 19, characterized in that: The power supply control method further includes: When the second circuit breaker is tripped, the second switch unit is disconnected.

24. The power supply control method according to any one of claims 16 to 23, characterized in that: The power supply control method further includes: When the first switching switch unit and the second switching switch unit are both in an off state, the voltage conversion unit stops outputting voltage.

25. The power supply control method according to any one of claims 16 to 19, characterized in that: The controller controls the voltage conversion unit to output the first voltage or the second voltage, or controls the voltage conversion unit to stop outputting voltage.

26. The power supply control method according to claim 25, characterized in that: The controller controls the first switching switch unit to be connected or disconnected to achieve connection or disconnection between the first circuit breaker and the voltage conversion unit.

27. The power supply control method according to claim 26, characterized in that: The controller controls the second switching switch unit to be connected or disconnected, so as to realize connection or disconnection between the control end of the second circuit breaker and the voltage conversion unit.

28. A communication device, characterized in that: The communication device comprises a first DC power supply, a circuit breaker and a power supply control system according to any one of claims 1 to 15, wherein the power supply control system is arranged between the first DC power supply and the circuit breaker.

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