Power supply control system, power supply system, power supply control method, electronic device, storage medium, and program product

Abstract

The embodiment of the application discloses a power supply control system, a power supply system, a power supply control method, an electronic device, a storage medium and a program product, the power supply control system is used for being connected in a line between a battery, a power supply module and a battery management system, and the power supply control system comprises: a switching module; a high-low voltage conversion module, one end of the high-low voltage conversion module is adapted to be electrically connected with the switching module, and the other end of the high-low voltage conversion module is adapted to be electrically connected with the battery; when the power supply module is insufficient to supply power to the battery management system, the high-low voltage conversion module is turned on, the battery supplies power to the battery management system through the loop of the high-low voltage conversion module and the switching module, the normal work of the battery management system is ensured, and then the safety of the battery pack and the whole vehicle is protected.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a power supply control system, power supply system, power supply control method, electronic device, computer-readable storage medium, and program product. Background Technology

[0002] The low-voltage power supply of the power battery pack typically relies on a parallel power supply method between the vehicle's small batteries and the DC-DC converter. Under normal operating conditions, this method can meet the power supply requirements of the battery management system. However, when the external low-voltage power supply is insufficient or abnormal, such as when the vehicle's power supply system malfunctions, experiences a voltage drop, or suffers a power outage, the power supply to the battery management system may be severely affected, leading to malfunctions or even a complete power failure. This unstable power supply not only affects the normal operation of the battery pack but may also threaten the safety of the entire vehicle.

[0003] Therefore, there is an urgent need to propose a new low-voltage power supply control system and strategy for power battery packs, so as to improve the stability and safety of the battery pack power supply system. Summary of the Invention

[0004] This application provides a power supply control system, power supply system, power supply control method, electronic device, computer-readable storage medium, and program product to at least partially solve the above-mentioned problems. The first aspect of this application provides a power supply control system for connection to a line between a battery, a power supply module, and a battery management system. The power supply control system includes: a switching module; and a high-low voltage conversion module, one end of which is adapted to be electrically connected to the switching module, and the other end of which is adapted to be electrically connected to the battery. When the power supply module fails to supply sufficient power to the battery management system, the high-low voltage conversion module is turned on, and the battery supplies power to the battery management system through the loop between the high-low voltage conversion module and the switching module.

[0005] Preferably, the power supply module includes a first DC-DC unit and a power supply unit, which are connected in parallel; insufficient power supply from the power supply module to the battery management system includes a voltage of less than 9V supplied by the power supply module to the battery management system, and a duration of greater than or equal to 0.05s and less than or equal to 5s.

[0006] Preferably, the power supply control system further includes a switch module, one end of which is adapted to be electrically connected to the battery, and the other end of which is adapted to be electrically connected to the high-low voltage conversion module. When the power supply module fails to supply enough power to the battery management system, the switch module is used to control the high-low voltage conversion module to turn on.

[0007] Preferably, the power supply control system further includes a control module, one end of which is adapted to be electrically connected to the battery management system, and the other end of which is adapted to be electrically connected to the switch module, the high-low voltage conversion module, and the switching module.

[0008] Preferably, the high-low voltage conversion module includes a second DC-DC unit and a first switching unit. The second DC-DC unit is connected between the switching module and the first switching unit. The first switching unit also includes a first interface and a second interface. The first interface of the first switching unit is adapted to be electrically connected to the switching module, and the second interface of the first switching unit is adapted to be electrically connected to the control module.

[0009] Preferably, the switching module includes a first switching module and a second switching module. One end of the first switching module is adapted to be electrically connected to the first switching unit, and the other end of the first switching module is adapted to be electrically connected to the battery management system. One end of the second switching module is adapted to be electrically connected to the first switching unit, and the other end of the second switching module is adapted to be electrically connected to the battery management system.

[0010] Secondly, embodiments of this application provide a power supply system, including a battery, a battery management system, a power supply module, and a power supply control system provided in this application. The power supply control system is electrically connected to the battery, the battery management system, and the power supply module.

[0011] Preferably, the battery management system includes a voltage detection unit, which is electrically connected to the power supply module. The voltage detection unit is used to detect the voltage value supplied by the power supply module to the battery management system.

[0012] Thirdly, embodiments of this application provide a power supply control method for a power supply control system. The power supply control method includes controlling the high-low voltage conversion module to conduct if the voltage supplied by the power supply module to the battery management system is less than 9V and the duration is greater than or equal to 0.05s and less than or equal to 5s, so that the battery supplies power to the battery management system through the loop of the high-low voltage conversion module and the switching module; or, if the voltage supplied by the power supply module to the battery management system is not greater than 11V and the duration is greater than or equal to 0.05s and less than or equal to 5s, the high-low voltage conversion module is controlled to conduct, so that the battery supplies power to the battery management system through the loop of the high-low voltage conversion module and the first switching module; or, if the voltage supplied by the power supply module to the battery management system is not greater than 10V and the duration is greater than or equal to 0.05s and less than or equal to 5s, the high-low voltage conversion module is controlled to conduct, so that the battery supplies power to the battery management system through the loop of the high-low voltage conversion module and the second switching module.

[0013] Preferably, the power supply control method further includes controlling the high-low voltage conversion module to disconnect if the voltage supplied by the power supply module to the battery management system is less than 9V and the duration is greater than or equal to 0.05s and less than or equal to 5s, so as to realize power supply to the battery management system through the loop between the power supply module and the switching module; or, if the voltage supplied by the power supply module to the battery management system is greater than 11V and the duration is greater than or equal to 0.05s and less than or equal to 5s, controlling the high-low voltage conversion module to disconnect, so as to realize power supply to the battery management system through the loop between the power supply module and the first switching module; or, if the voltage supplied by the power supply module to the battery management system is greater than 10V and the duration is greater than or equal to 0.05s and less than or equal to 5s, controlling the high-low voltage conversion module to disconnect, so as to realize power supply to the battery management system through the loop between the power supply module and the second switching module.

[0014] Fourthly, embodiments of this application provide an electronic device including a processor and a memory, wherein one or more programs are stored in the memory and configured to be executed by the processor, the processor being used to execute instructions for the steps in any method of the third aspect of embodiments of this application.

[0015] Fifthly, embodiments of this application provide a computer-readable storage medium storing a computer program for electronic data interchange, wherein the computer program causes a computer to perform some or all of the steps described in any method of the third aspect of this application.

[0016] Sixthly, embodiments of this application provide a computer program product, wherein when the computer program product is run on a terminal, the terminal performs any of the methods described in the third aspect of embodiments of this application.

[0017] According to the embodiments of this application, a power supply control system, power supply system, power supply control method, electronic device, computer-readable storage medium, and program product have the following beneficial effects: when the power supply module is insufficient to supply power to the battery management system, the high-low voltage conversion module of the power supply control system provided in the embodiments of this application is turned on, and the battery supplies power to the battery management system through the circuit of the high-low voltage conversion module and the switching module, ensuring the normal operation of the battery management system, thereby protecting the battery pack and the safety of the whole vehicle.

[0018] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0021] Figure 1 This is a schematic structural block diagram of a power supply system provided in an exemplary embodiment of this disclosure;

[0022] Figure 2 This is a schematic structural block diagram of a power supply system provided in an exemplary embodiment of this disclosure;

[0023] Figure 3 This is a schematic structural block diagram of a power supply system provided in an exemplary embodiment of this disclosure;

[0024] Figure 4 This is a schematic structural block diagram of a power supply system provided in an exemplary embodiment of this disclosure;

[0025] Figure 5 This is a schematic structural block diagram of a power supply system provided in an exemplary embodiment of this disclosure;

[0026] Figure 6 This is a schematic structural block diagram of a power supply control system provided in an exemplary embodiment of this disclosure;

[0027] Figure 7 This is a schematic structural block diagram of a power supply control system provided in an exemplary embodiment of this disclosure;

[0028] Figure 8 This is a schematic structural block diagram of a power supply control system provided in an exemplary embodiment of this disclosure;

[0029] Figure 9 This is a schematic structural block diagram of a power supply system provided in an exemplary embodiment of this disclosure;

[0030] Figure 10 This is a schematic structural block diagram of a power supply control system provided in an exemplary embodiment of this disclosure;

[0031] Figure 11 This is a schematic flowchart of a power supply control method provided in an exemplary embodiment of this disclosure;

[0032] Figure 12 This is a flowchart illustrating a power supply control method provided in an exemplary embodiment of this disclosure. Detailed Implementation

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0034] In an optional implementation, the power supply control system 10 provided in this application is used to connect to the line between the battery 20, the power supply module 40, and the battery management system 30. The power supply control system 10 includes a switching module 101 and a high-low voltage conversion module 102. One end of the high-low voltage conversion module 102 is adapted to be electrically connected to the switching module 101, and the other end of the high-low voltage conversion module 102 is adapted to be electrically connected to the battery 20. When the power supply module 40 is insufficient to supply power to the battery management system 30, the high-low voltage conversion module 102 is turned on, and the battery 20 supplies power to the battery management system 30 through the circuit between the high-low voltage conversion module 102 and the switching module 101, ensuring the normal operation of the battery management system 30, thereby protecting the battery pack 20 and the safety of the entire vehicle.

[0035] In specific implementation methods, such as Figures 1-10As shown, the power supply control system 10 is used in the line connecting the battery 20, the power supply module 40, and the battery management system 30. The battery 20 can refer to multiple batteries 20 or battery 20 modules. The power supply control system 10 includes: a switching module 101, which may include, but is not limited to, a dual-path MOSFET structure. This scheme improves system reliability through dual-path redundancy design and achieves active fault-tolerant control through a fault diagnosis module, ensuring continuous power supply under extreme conditions; and a high-low voltage conversion module 102, one end of which is suitable for electrical connection to the switching module 101, and the other end of which is suitable for electrical connection to the battery 20. The high-low voltage conversion module 102 converts the high voltage input from the battery 20 into a stable and controllable low voltage through a controllable boost-buck principle, ensuring stable low-voltage output for continuous operation. 2. By default, it is in a dormant state. It will only be activated by the battery management system 30 and adjusted to a stable low-voltage output when the high-voltage power inside the battery 20 is needed. The high-low voltage conversion module 102 may include, but is not limited to, the second DC-DC unit 1021 and the first switching unit 1022. The second DC-DC unit 1021 adopts an LLC resonant topology, with an input voltage range of 300-400V and an output of 12V / 10A. This scheme adapts to the SOC changes of the battery 20 through a wide input voltage range and ensures the power supply quality of the battery management system 30 through precise voltage regulation. When the power supply module 40 is insufficient to supply power to the battery management system 30, the high-low voltage conversion module 102 is turned on, and the battery 20 supplies power to the battery management system 30 through the loop of the high-low voltage conversion module 102 and the switching module 101, ensuring the normal operation of the battery management system 30 and thus protecting the battery pack 20 and the safety of the entire vehicle.

[0036] In one optional implementation, the power supply module 40 includes a first DC-DC unit 401 and a power supply unit 402, which are connected in parallel. Insufficient power supply from the power supply module 40 to the battery management system 30 includes a voltage of less than 9V supplied by the power supply module 40 to the battery management system 30 for a duration of greater than or equal to 0.05s and less than or equal to 5s. When the external power supply is normal, the first DC-DC unit 401 and the power supply unit 402 can supply power to the battery management system 30 to ensure low-voltage power supply efficiency.

[0037] In specific implementation methods, such as Figures 1-10As shown, the power module includes a first DC-DC unit 401 and a power supply unit 402, which are connected in parallel. The power supply module 40 provides low voltage to the battery management system 30 from the outside. When low voltage is provided to the battery management system 30 from the outside, there are two power supply paths: one is to supply power to the battery management system 30 and then the battery management system 30 supplies power to the controller; the other is to supply power to the battery management system 30 and then the battery management system 30 supplies power to the relay. Regardless of which path the low voltage is provided by, the external power supply is provided by the first DC-DC unit 401 and the power supply unit 402. When the external power supply line is normal, the efficiency of the low voltage supply can be guaranteed. Insufficient power supply from the power supply module 40 to the battery management system 30 includes a voltage less than 9V supplied by the power supply module 40 to the battery management system 30 for a duration greater than or equal to 0.05s and less than or equal to 5s. If this condition is met, it can be considered that the power supply module 40 is insufficient to supply power to the battery management system 30. In this case, the power supply control system 10 needs to supply power to the battery management system 30 to ensure the safety of the battery pack 20 and the entire vehicle.

[0038] In an optional implementation, the power supply control system 10 further includes a switch module 50. One end of the switch module 50 is adapted to be electrically connected to the battery 20, and the other end of the switch module 50 is adapted to be electrically connected to the high-low voltage conversion module 102. When the power supply module 40 is insufficient to supply power to the battery management system 30, the switch module 50 is used to control the high-low voltage conversion module 102 to be turned on. The switch module 50 can simply and efficiently control the high-low voltage conversion module 102 to be turned on or off.

[0039] In specific implementation methods, such as Figures 1-10 As shown, the power supply control system 10 also includes a switch module 50. One end of the switch module 50 is adapted to be electrically connected to the battery 20, and the other end of the switch module 50 is adapted to be electrically connected to the high-low voltage conversion module 102. When the power supply module 40 is insufficient to supply power to the battery management system 30, the switch module 50 is used to control the high-low voltage conversion module 102 to be turned on. The switch module 50 plays a safety protection role. When no internal high-low voltage conversion is performed, the connection between the battery 20 and the high-low voltage conversion module 102 is disconnected to prevent the formation of a loop and the consumption of the battery 20's power. When internal high-low voltage conversion is required, it controls the closing of the switch. The front-end high-voltage switch is in the open state by default. It will only be closed when it is determined that the low-voltage power supply from the external power supply module 40 is insufficient and power needs to be drawn from the battery 20. Once the external low-voltage power supply is switched back, the front-end high-voltage switch will be opened. The switch module 50 may be, but is not limited to, a three-state relay, which achieves smooth switching through PWM control to reduce the impact of voltage fluctuations on the battery management system 30.

[0040] In an optional implementation, the power supply control system 10 further includes a control module 60. One end of the control module 60 is adapted to be electrically connected to the battery management system 30, and the other end of the control module 60 is adapted to be electrically connected to the switch module 50, the high-low voltage conversion module 102, and the switching module 101. When the control module 60 receives a signal from the battery management system 30, it can control the switch module 50, the high-low voltage conversion module 102, and the switching module 101 with the highest efficiency.

[0041] In specific implementation methods, such as Figures 1-10 As shown, the power supply control system 10 also includes a control module 60. One end of the control module 60 is adapted to be electrically connected to the battery management system 30, and the other end of the control module 60 is adapted to be electrically connected to the switch module 50, the high-low voltage conversion module 102, and the switching module 101. The control module 60 is used to receive control commands from the battery management system 30 and control the switch module 50, the high-low voltage conversion module 102, and the switching module 101 to realize the internal high-voltage to low-voltage conversion and the internal and external low-voltage output switching.

[0042] In one optional implementation, the high-low voltage conversion module 102 includes a second DC-DC unit 1021 and a first switching unit 1022. The second DC-DC unit 1021 is connected between the switching module 50 and the first switching unit 1022. The first switching unit 1022 also includes a first interface and a second interface. The first interface of the first switching unit 1022 is adapted to be electrically connected to the switching module 101, and the second interface of the first switching unit 1022 is adapted to be electrically connected to the control module 60. The high-low voltage conversion module 102 can accurately and efficiently improve the efficiency of high-low voltage conversion, and accurately and timely convert the high voltage of the battery 20 to low voltage when the low voltage power supply of the power supply module 40 is insufficient.

[0043] In specific implementation methods, such as Figures 1-10As shown, the high-low voltage conversion module 102 includes a second DC-DC unit 1021 and a first switching unit 1022. The second DC-DC unit 1021 is connected between the switching module 50 and the first switching unit 1022. The first switching unit 1022 also includes a first interface and a second interface. The first interface of the first switching unit 1022 is suitable for electrical connection with the switching module 101, and the second interface of the first switching unit 1022 is suitable for electrical connection with the control module 60. The high-low voltage conversion module 102 converts the high voltage input from the battery 20 into a stable and controllable low voltage through a controllable boost and buck principle, ensuring stable low voltage output for continuous operation. The high-low voltage conversion module 102 is in a dormant state by default. It is only activated by the battery management system 30 and adjusted to provide a stable low-voltage output when the high voltage inside the battery 20 is needed. Optionally, the high-low voltage conversion module 102 also includes a built-in controller component 1023. The first interface of the built-in controller component 1023 is adapted to be electrically connected to the first switch unit 1022, and the second interface of the built-in controller component 1023 is adapted to be electrically connected to the control module 60. The built-in controller is used to receive control signals from the control module 60 and control the opening and closing of the first switch unit 1022. The built-in controller further improves the accuracy of control.

[0044] In one optional implementation, the switching module 101 includes a first switching module 1011 and a second switching module 1012. One end of the first switching module 1011 is adapted to be electrically connected to the first switching unit 1022, and the other end of the first switching module 1011 is adapted to be electrically connected to the battery management system 30. One end of the second switching module 1012 is adapted to be electrically connected to the first switching unit 1022, and the other end of the second switching module 1012 is adapted to be electrically connected to the battery management system 30. The switching module 101 can simply and efficiently realize the switching of power supply from the external power supply module 40 to the battery management system 30 and the power supply control system 10 to the battery management system 30.

[0045] In specific implementation methods, such as Figures 1-10As shown, the switching module 101 includes a first switching module 1011 and a second switching module 1012. One end of the first switching module 1011 is adapted to be electrically connected to the first switching unit 1022, and the other end is adapted to be electrically connected to the battery management system 30. One end of the second switching module 1012 is adapted to be electrically connected to the first switching unit 1022, and the other end is adapted to be electrically connected to the battery management system 30. The switching module 101 can switch the external power supply and internal power supply output of the power supply module 40 to supply the battery management system 30. The external power supply to the power supply module 40 is input from outside the power battery pack 20; the internal power supply is input from the high-low voltage conversion module 102. The switching module 101 defaults to outputting the external power supply to the power supply module 40; only when the external power supply is insufficient will the switching module 101 be controlled to switch to the internal low-voltage input. When the external power supply module 40 provides low voltage to the battery management system 30, there are two power supply paths. One is that the battery management system 30 supplies power to the battery management system 30, and then the battery management system 30 supplies power to the controller. When this external power supply path is used, the switching from external low voltage power supply to internal power supply control system 10 is achieved through the first switching module 1011. The other is that the battery management system 30 supplies power to the battery management system 30, and then the battery management system 30 supplies power to the relay. When this external power supply path is used, the switching from external low voltage power supply to internal power supply control system 10 is achieved through the second switching module 1012. The switching module 101 is divided into the first switching module 1011 and the second switching module 1012 to accurately realize the switching between the internal power supply control system 10 and the low voltage power supply of the external power supply module 40 under different external power supply paths.

[0046] In one optional implementation, the power supply system provided in this application includes a battery 20, a battery management system 30, a power supply module 40, and a power supply control system 10 provided in this application. The power supply control system 10 is electrically connected to the battery 20, the battery management system 30, and the power supply module 40. The power supply system helps to comprehensively and efficiently realize the external power supply module 40 to supply power to the battery management system 30 and the internal power supply control system 10 to supply power to the battery management system 30.

[0047] In specific implementation methods, such as Figures 1-10 As shown, the power supply system provided in this application includes a battery 20, a battery management system 30, a power supply module 40, and a power supply control system 10 provided in this application. The power supply control system 10 is electrically connected to the battery 20, the battery management system 30, and the power supply module 40. When the power supply module 40 is insufficient to supply power to the battery management system 30, the power supply control system 10 can supply power to the battery management system 30, thereby ensuring the normal operation of the battery management system 30 and protecting the battery pack 20 and the safety of the entire vehicle.

[0048] In one optional implementation, the battery management system 30 includes a voltage detection unit 301, which is electrically connected to the power supply module 40. The voltage detection unit 301 is used to detect the voltage value supplied by the power supply module 40 to the battery management system 30. The voltage detection unit 301 can easily and accurately detect whether the power supply module 40 has insufficient power supply.

[0049] In specific implementation methods, such as Figures 1-10 As shown, the battery management system 30 includes a voltage detection unit 301, which is electrically connected to the power supply module 40. The voltage detection unit 301 is used to detect the voltage value supplied by the power supply module 40 to the battery management system 30. The voltage detection unit 301 may include, but is not limited to, a differential amplifier circuit and a 16-bit ADC. This scheme ensures the timely detection of power supply abnormalities through high-precision detection, providing a reliable basis for subsequent control strategies.

[0050] In an optional implementation, this application provides a power supply control method for a power supply control system 10. The power supply control method includes controlling the high-low voltage conversion module 102 to conduct if the voltage supplied by the power supply module 40 to the battery management system 30 is less than 9V and the duration is greater than or equal to 0.05s and less than or equal to 5s, so that the battery 20 supplies power to the battery management system 30 through the loop of the high-low voltage conversion module 102 and the switching module 101; or, if the voltage supplied by the power supply module 40 to the battery management system 30 is not greater than 11V and the duration is greater than or equal to 5s, the method further includes controlling the high-low voltage conversion module 102 to conduct ... high-low voltage conversion module 102 and the switching module 101. If the voltage difference between 0.05s and 5s is less than or equal to 5s, the high-low voltage conversion module 102 is turned on to enable the battery 20 to supply power to the battery management system 30 through the loop of the high-low voltage conversion module 102 and the first switching module 1011; or, if the voltage supplied by the power supply module 40 to the battery management system 30 is not greater than 10V and the duration is greater than or equal to 0.05s and less than or equal to 5s, the high-low voltage conversion module 102 is turned on to enable the battery 20 to supply power to the battery management system 30 through the loop of the high-low voltage conversion module 102 and the second switching module 1012.

[0051] In specific implementation methods, such as Figures 11-12As shown, when the external power supply module 40 provides low voltage to the battery management system 30, there are two power supply paths. One is that the power supply module 40 supplies power to the battery management system 30, and then the battery management system 30 supplies power to the controller. The other is that the power supply module 40 supplies power to the battery management system 30, and then the battery management system 30 supplies power to the relay. The power supply control method for the power supply control system 10 provided in this application is also divided into a controller endurance strategy and a relay endurance control strategy. The controller endurance system works together with the battery management system 30. The specific strategy flow is as follows: Step 1: Detection of low external power supply voltage: If the battery management system 30 detects that the power supply voltage of the external power supply module 40 is <9V, and the duration is greater than or equal to 0.05s and less than or equal to 5s, then action 1 is executed. Step 1: Sequentially control the closing switch module 50, wake up and start the high-low voltage conversion module 102, and switch the output low voltage of the high-low voltage module 1011; otherwise, execute step 2: Sequentially control the first switching module 1011 to switch the output power to the external power supply module 40, put the high-low voltage conversion module 102 into sleep mode, and disconnect the switch module 50; Step 2: External power supply voltage recovery detection: If the battery management system 30 detects that the external power supply voltage of the power supply module 40 is >11V and the duration is greater than or equal to 0.05s and less than or equal to 5s, then execute step 2; otherwise, execute step 1; This achieves the goal of switching the low voltage source to the stable output of the high-voltage to low-voltage power supply from the power battery pack 20 when the low voltage power supply of the power supply module 40 is insufficient, ensuring the low voltage range stability of the battery management system 30 and ensuring safe communication and interaction between the battery management system 30 and the vehicle. The relay range system works in conjunction with the battery management system 30 to achieve comprehensive allocation of relay low voltage power supply. The specific strategy process is as follows: Step 1: External power supply voltage low detection: If the battery management system 30 detects that the external power supply voltage is <9V and the duration is greater than or equal to 0.05s and less than or equal to 5s, then action 3 is executed: the front-end switch module 50 is closed in sequence, the high-low voltage conversion module 102 is woken up and started, and the second switching module 1012 switches the output of the low voltage of the high-low voltage module; otherwise, action 4 is executed: the second switching module 1012 is switched to switch the output of the external power supply in sequence, the high-low voltage conversion module 102 goes into sleep mode, and the switch module 50 is opened; Step 2: External power supply voltage recovery detection: If the battery management system 30 detects that the external power supply voltage of the power supply module 40 is >10V and the duration is greater than or equal to 0.05s and less than or equal to 5s, then action 4 is executed; otherwise, action 3 is executed; thus, when the low voltage power supply of the power supply module 40 is insufficient, the low voltage source is switched to the stable output of the high-voltage to low-voltage power battery pack 20, ensuring the low-voltage range stability of the battery management system 30 and ensuring the safe communication and interaction between the battery management system 30 and the vehicle.

[0052] In an optional implementation, the power supply control method further includes controlling the high-low voltage conversion module 102 to disconnect if the voltage supplied by the power supply module 40 to the battery management system 30 is less than 9V and the duration is greater than or equal to 0.05s and less than or equal to 5s, so as to achieve power supply to the battery management system 30 through the loop of the power supply module 40 and the switching module 101; or, if the voltage supplied by the power supply module 40 to the battery management system 30 is greater than 11V and the duration is greater than or equal to 0.05s and less than or equal to 5s, controlling the high-low voltage conversion module 102 to disconnect, so as to achieve power supply to the battery management system 30 through the loop of the power supply module 40 and the first switching module 1011; or, if the voltage supplied by the power supply module 40 to the battery management system 30 is greater than 10V and the duration is greater than or equal to 0.05s and less than or equal to 5s, controlling the high-low voltage conversion module 102 to disconnect, so as to achieve power supply to the battery management system 30 through the loop of the power supply module 40 and the second switching module 1012.

[0053] In specific implementation methods, such as Figures 11-12As shown, when the external power supply module 40 provides low voltage to the battery management system 30, there are two power supply paths. One is that the power supply module 40 supplies power to the battery management system 30, and then the battery management system 30 supplies power to the controller. The other is that the power supply module 40 supplies power to the battery management system 30, and then the battery management system 30 supplies power to the relay. The power supply control method for the power supply control system 10 provided in this application is also divided into a controller endurance strategy and a relay endurance control strategy. The controller endurance system works together with the battery management system 30. The specific strategy flow is as follows: Step 1: Detection of low external power supply voltage: If the battery management system 30 detects that the power supply voltage of the external power supply module 40 is <9V, and the duration is greater than or equal to 0.05s and less than or equal to 5s, then action 1 is executed. Step 1: Sequentially control the closing switch module 50, wake up and start the high-low voltage conversion module 102, and switch the output low voltage of the high-low voltage module 1011; otherwise, execute step 2: Sequentially control the first switching module 1011 to switch the output power to the external power supply module 40, put the high-low voltage conversion module 102 into sleep mode, and disconnect the switch module 50; Step 2: External power supply voltage recovery detection: If the battery management system 30 detects that the external power supply voltage of the power supply module 40 is >11V and the duration is greater than or equal to 0.05s and less than or equal to 5s, then execute step 2; otherwise, execute step 1; This achieves the goal of switching the low voltage source to the stable output of the high-voltage to low-voltage power supply from the power battery pack 20 when the low voltage power supply of the power supply module 40 is insufficient, ensuring the low voltage range stability of the battery management system 30 and ensuring safe communication and interaction between the battery management system 30 and the vehicle. The relay range system works in conjunction with the battery management system 30 to achieve comprehensive allocation of relay low voltage power supply. The specific strategy process is as follows: Step 1: External power supply voltage low detection: If the battery management system 30 detects that the external power supply voltage is <9V and the duration is greater than or equal to 0.05s and less than or equal to 5s, then action 3 is executed: the front-end switch module 50 is closed in sequence, the high-low voltage conversion module 102 is woken up and started, and the second switching module 1012 switches the output of the low voltage of the high-low voltage module; otherwise, action 4 is executed: the second switching module 1012 is switched to switch the output of the external power supply in sequence, the high-low voltage conversion module 102 goes into sleep mode, and the switch module 50 is opened; Step 2: External power supply voltage recovery detection: If the battery management system 30 detects that the external power supply voltage of the power supply module 40 is >10V and the duration is greater than or equal to 0.05s and less than or equal to 5s, then action 4 is executed; otherwise, action 3 is executed; thus, when the low voltage power supply of the power supply module 40 is insufficient, the low voltage source is switched to the stable output of the high-voltage to low-voltage power battery pack 20, ensuring the low-voltage range stability of the battery management system 30 and ensuring the safe communication and interaction between the battery management system 30 and the vehicle.

[0054] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0055] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0056] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0057] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A power supply control system, characterized in that, The power supply control system is used in the circuit between the battery, the power supply module, and the battery management system. The power supply control system includes: Switch modules; A high-low voltage conversion module, one end of which is adapted to be electrically connected to the switching module, and the other end of which is adapted to be electrically connected to the battery; When the power supply module fails to supply enough power to the battery management system, the high-low voltage conversion module is turned on, and the battery supplies power to the battery management system through the circuit of the high-low voltage conversion module and the switching module.

2. The power supply control system according to claim 1, characterized in that, The power supply module includes a first DC-DC unit and a power supply unit, wherein the first DC-DC unit and the power supply unit are connected in parallel. The insufficient power supply from the power supply module to the battery management system includes situations where the voltage supplied by the power supply module to the battery management system is less than 9V, and the duration is greater than or equal to 0.05s and less than or equal to 5s.

3. The power supply control system according to claim 1, characterized in that, The power supply control system also includes: A switching module, one end of which is adapted to be electrically connected to the battery, and the other end of which is adapted to be electrically connected to the high-low voltage conversion module. When the power supply module fails to supply enough power to the battery management system, the switching module is used to control the high-low voltage conversion module to turn on.

4. The power supply control system according to claim 3, characterized in that, The power supply control system also includes: The control module has one end adapted to be electrically connected to the battery management system, and the other end adapted to be electrically connected to the switch module, the high-low voltage conversion module, and the switching module.

5. The power supply control system according to claim 4, characterized in that, The high-low voltage conversion module includes: A second DC-DC unit and a first switching unit are provided. The second DC-DC unit is connected between the switching module and the first switching unit. The first switching unit further includes a first interface and a second interface. The first interface of the first switching unit is adapted to be electrically connected to the switching module, and the second interface of the first switching unit is adapted to be electrically connected to the control module.

6. The power supply control system according to claim 5, characterized in that, The switching module includes: A first switching module and a second switching module, wherein one end of the first switching module is adapted to be electrically connected to the first switching unit, and the other end of the first switching module is adapted to be electrically connected to the battery management system; one end of the second switching module is adapted to be electrically connected to the first switching unit, and the other end of the second switching module is adapted to be electrically connected to the battery management system.

7. A power supply system, characterized in that, It includes a battery, a battery management system, a power supply module, and a power supply control system according to any one of claims 1-6, wherein the power supply control system and the battery, the battery management system, and the power supply module are all electrically connected.

8. The power supply system according to claim 7, characterized in that, The battery management system includes: A voltage detection unit is electrically connected to the power supply module and is used to detect the voltage value supplied by the power supply module to the battery management system.

9. A power supply control method for a power supply control system, characterized in that, The power supply control method includes: If the power supply module supplies a voltage of less than 9V to the battery management system for a duration of greater than or equal to 0.05s and less than or equal to 5s, the high-low voltage conversion module is controlled to be turned on so that the battery supplies power to the battery management system through the circuit of the high-low voltage conversion module and the switching module. Alternatively, if the supply voltage from the power supply module to the battery management system is not greater than 11V and the duration is greater than or equal to 0.05s and less than or equal to 5s, then the high-low voltage conversion module is controlled to be turned on so that the battery supplies power to the battery management system through the loop between the high-low voltage conversion module and the first switching module. Alternatively, if the power supply module does not supply a voltage greater than 10V to the battery management system for a duration greater than or equal to 0.05s and less than or equal to 5s, then the high-low voltage conversion module is controlled to be turned on, so that the battery supplies power to the battery management system through the loop of the high-low voltage conversion module and the second switching module.

10. The power supply control method according to claim 9, characterized in that, The power supply control method further includes: If the supply voltage from the power supply module to the battery management system is less than 9V and the duration is greater than or equal to 0.05s and less than or equal to 5s, then the high-low voltage conversion module is controlled to disconnect, so as to realize the supply of power to the battery management system through the loop between the power supply module and the switching module; Alternatively, if the power supply module supplies a voltage greater than 11V to the battery management system for a duration greater than or equal to 0.05s and less than or equal to 5s, the high-low voltage conversion module is controlled to disconnect, so as to supply power to the battery management system through the circuit between the power supply module and the first switching module. Alternatively, if the power supply module supplies a voltage greater than 10V to the battery management system for a duration greater than or equal to 0.05s and less than or equal to 5s, the high-low voltage conversion module is controlled to disconnect, so as to enable power supply to the battery management system through the loop between the power supply module and the second switching module.

11. An electronic device, characterized in that, Includes a processor and a memory, wherein the one or more programs are stored in the memory and configured to be executed by the processor, the processor being configured to execute instructions for the steps of the method as claimed in any one of claims 9-10.

12. A computer-readable storage medium, characterized in that, A computer program for storing electronic data interchange is provided, wherein the computer program causes a computer to perform the method as described in any one of claims 9-10.

13. A computer program product, characterized in that, When the computer program product is run on a terminal, the terminal performs the method as described in any one of claims 9-10.

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