Power supply control method, device, equipment and storage medium

Abstract

The application discloses a kind of power supply control method, device, equipment and storage medium, the method is applied to vehicle controller, including when receiving the battery power supply instruction sent by TBOX, output high level wake-up signal and wake up battery management system;When battery management system is woken up, control battery management system to execute vehicle power-on procedure;When vehicle power-on procedure is executed, DC / DC is used to power supply for vehicle battery.The vehicle controller in the application receives the battery power supply instruction sent by TBOX, and outputs high level wake-up signal to wake up battery management system, and after controlling battery management system to execute vehicle power-on procedure, DC / DC is used to power supply for vehicle battery, without changing the hardware and software of battery management system, battery management system is woken up and controlled by vehicle controller, and the battery of vehicle is powered, which realizes the function of compatible different types of battery pack to vehicle battery power supply.

Description

Technical Field

[0001] This invention relates to the field of new energy vehicle technology, and in particular to a power replenishment control method, device, equipment and storage medium. Background Technology

[0002] Automotive electrification technology has gradually matured, and battery swapping technology occupies an important position in the electric vehicle field. OEMs and battery manufacturers are increasingly deploying battery swapping stations, and the number of universal battery swapping packs deployed at these stations is also increasing. As vehicles are equipped with more and more intelligent controllers, the power consumption of on-board batteries is also increasing. If a vehicle is parked for a long time without use, the risk of battery depletion increases. Once the on-board battery is depleted, the vehicle cannot be restarted. Therefore, it is necessary to replenish the on-board battery with a battery pack to prevent it from depleting. However, the type of battery pack used in battery swapping vehicles may be different. If the replacement battery pack is incompatible with the battery swapping vehicle or does not have a replenishment function, it cannot replenish the on-board battery.

[0003] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is prior art. Summary of the Invention

[0004] The main objective of this invention is to provide a power replenishment control method, device, equipment, and storage medium, which aims to solve the technical problem in the prior art that battery swapping vehicles cannot be compatible with different types of battery packs for replenishing on-board batteries.

[0005] To achieve the above objectives, the present invention provides a power supply control method, which is applied to a vehicle controller, and the method includes the following steps:

[0006] Upon receiving a battery charging command from TBOX, a high-level wake-up signal is output to the battery management system to wake it up.

[0007] When the battery management system is woken up, the system is controlled to execute the vehicle power-on process.

[0008] When the vehicle power-on process is completed, the on-board battery is recharged via DC / DC converter.

[0009] Optionally, the step of outputting a high-level wake-up signal to the battery management system upon receiving a battery charging command from the TBOX to wake up the battery management system includes:

[0010] When a battery charging command is received from the TBOX, a high-level wake-up signal is continuously output to the key wake-up port configured by the battery management system. The battery management system is in working state when the key wake-up port continuously receives the high-level wake-up signal.

[0011] Optionally, before waking up the battery management system by outputting a high-level wake-up signal to it upon receiving a battery charging command from the TBOX, the method further includes:

[0012] Upon receiving a wake-up message sent by TBOX via the CAN network, it enters working mode from sleep mode;

[0013] When entering the working state, it receives the battery charging command sent by the TBOX through the CAN network.

[0014] Optionally, when the battery management system is woken up, controlling the battery management system to execute the vehicle power-on process includes:

[0015] When the battery management system is woken up, a power-on command is sent to the battery management system. When the battery management system receives the power-on command, it executes the vehicle power-on process.

[0016] Optionally, the step of replenishing the vehicle battery with power via DC / DC converter after the vehicle power-on process is completed includes:

[0017] When the vehicle power-on process is completed, an enable signal is output to the DC / DC converter. Upon receiving the enable signal, the DC / DC converter enters a working state to recharge the vehicle battery.

[0018] Optionally, after the vehicle power-on process is completed and the on-board battery is recharged via DC / DC, the method further includes:

[0019] When the battery voltage of the vehicle battery is detected to have reached the charging cutoff voltage, the DC / DC converter is controlled to stop charging the vehicle battery.

[0020] When the DC / DC converter stops charging the vehicle battery, the battery management system is controlled to execute the vehicle power-off procedure.

[0021] When the vehicle power-down process is completed, the output of the high-level wake-up signal to the battery management system is stopped, so that the battery management system enters a sleep state or an offline state.

[0022] Optionally, after the vehicle power-on process is completed and the on-board battery is recharged via DC / DC, the method further includes:

[0023] When the battery voltage of the vehicle battery is detected to have reached the charging cutoff voltage, a charging completion signal is sent to the TBOX. Upon receiving the charging completion signal, the TBOX stops sending the wake-up message.

[0024] If the wake-up message is not received, the device enters a sleep state from the working state.

[0025] Furthermore, to achieve the above objectives, the present invention also proposes a power replenishment control device, the device comprising:

[0026] A high-level signal output module is used to output a high-level wake-up signal to the battery management system when a battery charging command is received from the TBOX, so as to wake up the battery management system.

[0027] The control module is used to control the battery management system to execute the vehicle power-on process when the battery management system is woken up.

[0028] The power replenishment module is used to replenish the vehicle battery via DC / DC converter after the vehicle power-on process is completed.

[0029] Furthermore, to achieve the above objectives, the present invention also proposes a power replenishment control device, the device comprising: a memory, a processor, and a power replenishment control program stored in the memory and executable on the processor, the power replenishment control program being configured to implement the steps of the power replenishment control method as described above.

[0030] In addition, to achieve the above objectives, the present invention also proposes a storage medium storing a power-compensation control program, which, when executed by a processor, implements the steps of the power-compensation control method described above.

[0031] This invention proposes a battery charging control method for a vehicle controller, comprising: upon receiving a battery charging command from a battery management system (TBOX), outputting a high-level wake-up signal to the battery management system to wake it up; controlling the battery management system to execute the vehicle power-on process when the battery management system is awakened; and charging the vehicle battery via a DC / DC converter upon completion of the vehicle power-on process. In this invention, the vehicle controller, upon receiving a battery charging command from the TBOX, outputs a high-level wake-up signal to wake up the battery management system and controls it to execute the vehicle power-on process. Upon completion of the vehicle power-on process, it charges the vehicle battery via a DC / DC converter. This method eliminates the need to modify the hardware and software of the battery management system. By waking up and controlling the battery management system through the vehicle controller, the method achieves battery charging for the vehicle battery, enabling compatibility with different types of battery packs and improving the user experience. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the power supply control device for the hardware operating environment involved in the embodiments of the present invention;

[0033] Figure 2 This is a flowchart illustrating the first embodiment of the power replenishment control method of the present invention;

[0034] Figure 3 This is a simplified diagram illustrating the principle of charging a vehicle battery in one embodiment of the charging control method of the present invention.

[0035] Figure 4 This is a flowchart illustrating the second embodiment of the power replenishment control method of the present invention;

[0036] Figure 5 This is a flowchart illustrating the third embodiment of the power replenishment control method of the present invention;

[0037] Figure 6 This is a schematic diagram of the process of charging the vehicle battery in one embodiment of the charging control method of the present invention;

[0038] Figure 7 This is a structural block diagram of the first embodiment of the power supply control device of the present invention.

[0039] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0040] It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention.

[0041] Reference Figure 1 , Figure 1 This is a schematic diagram of the power supply control device structure for the hardware operating environment involved in the embodiments of the present invention.

[0042] like Figure 1As shown, the power supply control device may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. The communication bus 1002 is used to enable communication between these components. The user interface 1003 may include a display screen or an input unit such as a keyboard; optionally, the user interface 1003 may also include a standard wired interface or a wireless interface. The network interface 1004 may optionally include a standard wired interface or a wireless interface (such as a Wireless-Fidelity (Wi-Fi) interface). The memory 1005 may be high-speed random access memory (RAM) or stable non-volatile memory (NVM), such as a disk storage device. Optionally, the memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0043] Those skilled in the art will understand that Figure 1 The structure shown does not constitute a limitation on the power supply control device, and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0044] like Figure 1 As shown, the memory 1005, which serves as a storage medium, may include an operating system, a network communication module, a user interface module, and a power-on control program.

[0045] exist Figure 1 In the power replenishment control device shown, the network interface 1004 is mainly used for data communication with the network server; the user interface 1003 is mainly used for data interaction with the user; the processor 1001 and the memory 1005 in the power replenishment control device of the present invention can be set in the power replenishment control device, and the power replenishment control device calls the power replenishment control program stored in the memory 1005 through the processor 1001 and executes the power replenishment control method provided in the embodiment of the present invention.

[0046] This invention provides a power replenishment control method, which is applied to a vehicle controller. (Refer to...) Figure 2 , Figure 2 This is a flowchart illustrating the first embodiment of the power supply control method of the present invention.

[0047] In this embodiment, the power replenishment control method includes the following steps:

[0048] Step S10: Upon receiving the battery charging command sent by TBOX, output a high-level wake-up signal to the battery management system to wake up the battery management system.

[0049] It should be noted that the executing entity in this embodiment can be a computing service device with data processing, network communication, and program execution functions, or an electronic device, power supply control device, vehicle controller, etc., capable of realizing the above functions. The following description uses the vehicle controller (VCU) as an example to illustrate this embodiment and the subsequent embodiments.

[0050] It is understandable that TBOX (Telematics BOX) is short for vehicle T-BOX, which stands for Remote Information Processor. The battery charging command can be a command to charge the vehicle battery. The TBOX wakes up at preset intervals to detect the battery voltage of the vehicle battery. When the battery voltage is lower than the voltage threshold, it sends a battery charging command to the vehicle controller through the CAN network. The voltage threshold can be a preset voltage value that requires charging the vehicle battery. The high-level wake-up signal can be a signal to wake up the battery management system from the dormant state to the working state. The battery management system (BMS) is also called the battery nanny or battery butler. It is mainly for intelligent management and maintenance of each battery cell, preventing overcharging and over-discharging of the battery, extending the battery life, and monitoring the battery status.

[0051] In this embodiment, the battery pack used to replenish the vehicle's on-board battery can be a battery swapping battery pack. The battery swapping interface and definition between the battery swapping battery pack and the battery swapping vehicle remain unchanged. The battery management system is activated by a high-level wake-up signal output by the vehicle controller. Assuming that the battery swapping vehicle is powered on by the key, the vehicle controller is activated by the key wake-up signal output through the key hardwire. After the vehicle controller is activated, it outputs a high-level wake-up signal to activate the battery management system. The key wake-up signal can be the wake-up signal output through the key hardwire after the vehicle key is in the start position (i.e., the on position).

[0052] In practice, after the vehicle is powered off, each controller enters a sleep state. The TBOX wakes up at preset intervals to check the battery voltage of the vehicle battery. When the battery voltage is greater than the voltage threshold, the TBOX enters a sleep state. When the battery voltage is less than or equal to the voltage threshold, the TBOX sends a battery charging command to the vehicle controller. When the vehicle controller receives the battery charging command from the TBOX, it outputs a high-level wake-up signal to the battery management system to wake up the battery management system from the sleep state to the working state.

[0053] Step S20: When the battery management system is woken up, control the battery management system to execute the vehicle power-on process.

[0054] It is understandable that the vehicle power-on process can be the vehicle executing a high-voltage power-on process; after the vehicle controller wakes up the battery management system, it sends a power-on command to the battery management system, and after receiving the power-on command, the battery management system executes the vehicle power-on process.

[0055] Step S30: When the vehicle power-on process is completed, the on-board battery is recharged via DC / DC converter.

[0056] Understandably, the vehicle controller can determine whether the vehicle power-on process has been completed by detecting the main positive relay, the main negative relay, and the bus voltage. For example, if the vehicle controller detects that the main positive relay is closed, the main negative relay is closed, and there is high voltage at the bus terminal, it determines that the vehicle power-on process has been completed. The vehicle controller then controls the DC / DC converter to obtain power from the battery pack to recharge the vehicle's battery.

[0057] In practice, the battery pack is equipped with a battery swapping interface for connecting to the battery swapping vehicle. The interface and definition between the battery pack and the vehicle remain unchanged. The vehicle-side key is hardwired to the vehicle controller. The key wake-up signal output from the key hardwire is used to wake up the vehicle controller. When the vehicle key is in the "on" position, it outputs a key wake-up signal to the vehicle controller via the key hardwire. After being woken up by the key wake-up signal, the vehicle controller outputs a high-level wake-up signal to wake up the battery management system. After being woken up, the battery management system initiates the vehicle power-on process according to the instructions sent by the vehicle controller. When the vehicle key is in the "off" position... Each controller enters sleep mode in succession. The TBOX automatically wakes up at preset intervals to detect the battery voltage of the vehicle battery. When the battery voltage is less than or equal to the voltage threshold, it wakes up the vehicle controller and sends a battery charging command to the vehicle controller. When the vehicle controller receives the battery charging command, it outputs a high-level wake-up signal to the battery management system to wake up the battery management system and control the battery management system to execute the high-voltage process of the vehicle. When the vehicle controller detects that the main positive relay is closed, the main negative relay is closed and there is high voltage at the bus terminal, it determines that the vehicle power-on process has been completed and controls the DC / DC to obtain power from the battery pack to charge the vehicle battery.

[0058] Furthermore, in order to recharge the vehicle battery with different types of battery swapping packs without changing the hardware and software of the battery management system in the battery swapping pack, step S10 includes: when receiving the battery recharge command sent by TBOX, continuously outputting a high-level wake-up signal to the key wake-up port configured by the battery management system, and the battery management system is in working state when the key wake-up port continuously receives the high-level wake-up signal.

[0059] It is understandable that the high-level wake-up signal can be a high-level drive signal output by the vehicle controller to wake up the battery management system; the key wake-up port can be a port configured in the battery swapping interface of the battery management system to receive the high-level wake-up signal. If the high-level wake-up signal is continuously present in the key wake-up port, the battery management system is woken up to the working state; after the high-level wake-up signal of the key wake-up port disappears, the battery management system enters the sleep state or offline state.

[0060] It should be noted that the key wake-up port configured in the current battery management system generally receives the output signal of the key hardwire. In this embodiment, the signal of the key wake-up port is no longer input by the key hardwire, but is controlled by the vehicle controller. By configuring a high-level wake-up signal in the vehicle controller to connect to the key wake-up port configured in the battery swapping interface of the battery management system, the vehicle controller continuously outputs a high-level wake-up signal to the key wake-up port, and the battery management system is woken up and enters the working state.

[0061] In practical implementation, the key wake-up port configured by the battery management system is changed from receiving the output signal of the key hard wire to receiving the high-level wake-up signal output by the vehicle controller. The vehicle controller is configured with a high-level wake-up signal. When the vehicle controller receives the battery charging command, it continuously outputs a high-level wake-up signal to the key wake-up port. The battery management system enters the working state when it detects a high-level wake-up signal at the key wake-up port.

[0062] Furthermore, in order to replenish the vehicle battery in a timely manner when the battery power is low, so as to prevent the vehicle battery from being depleted, before step S10, the method further includes: entering the working state from the sleep state when a wake-up message sent by the TBOX through the CAN network is received; and receiving the battery replenishment command sent by the TBOX through the CAN network when entering the working state.

[0063] Understandably, the wake-up message can be a message sent by the TBOX via the CAN network to wake up the vehicle controller. The TBOX wakes up at preset intervals to detect the battery voltage of the vehicle battery. When the battery voltage is less than or equal to the voltage threshold, it sends a wake-up message to the vehicle controller via the CAN network. After receiving the wake-up message, the vehicle controller enters the working state and, upon receiving the battery charging command sent by the TBOX via the CAN network, continuously outputs a high-level wake-up signal to the battery management system to wake up the battery management system.

[0064] It should be noted that the current charging solutions for pure electric non-battery swapping vehicles are generally implemented in the following ways: (1) When the TBOX detects that the battery voltage of the vehicle battery is low in the off position, it wakes up the BMS and VCU through CAN network messages. Then the BMS executes the vehicle power-on process and requests the VCU to drive the DC / DC to charge the vehicle battery. (2) The BMS wakes up automatically through its own clock. When the BMS detects that the battery voltage of the vehicle battery is low, it enables the DC / DC to charge the vehicle battery. Both of the above methods require the BMS hardware and software to support this function. For some types of battery swapping packs, the BMS hardware does not support CAN network wake-up or the BMS does not support battery voltage detection after timed self-wake-up. If the battery swapping vehicle is replaced with this type of battery swapping pack, it will not be able to charge the vehicle battery. If the hardware of the battery swapping pack is changed, it will incur huge additional costs. In this embodiment, the BMS key wake-up port no longer receives the output signal of the key hard wire, but is instead controlled by the VC. The U outputs a high-level wake-up signal to the BMS key wake-up port to control the battery management system. In the off position, when the TBOX detects that the lead-acid battery voltage is less than or equal to the threshold voltage, it wakes up the VCU via the CAN network. The VCU outputs a high-level wake-up signal to the key wake-up port configured in the BMS. The VCU controls the BMS to execute the high-voltage process for the entire vehicle, and then enables the DC / DC converter to charge the vehicle battery. In the on position, when the VCU detects a high-voltage prohibition fault outside the battery pack, it can stop outputting the high-level wake-up signal to the BMS to control the BMS to enter a sleep state, which can reduce low-voltage power consumption under fault conditions. With the charging control method proposed in this embodiment, the BMS hardware does not need to have CAN network wake-up function and timed self-wake-up hardware support for voltage detection of the vehicle battery. The BMS software also does not need to recognize the CAN network wake-up signal. The battery pack can maintain its original state. While reducing the cost of battery pack modification, it can be compatible with different types of battery packs to charge the vehicle battery.

[0065] In specific implementation, refer to Figure 3 , Figure 3This is a simplified diagram illustrating the principle of recharging the vehicle battery. Assuming a preset duration of 6 hours and a voltage threshold of 23V, after the vehicle key is turned off, all controls enter sleep mode. The TBOX (Battery Toy Box) automatically wakes up every 6 hours and checks the battery voltage. If the battery voltage is less than 23V, the TBOX sends a wake-up message to the VCU (Vehicle Control Unit) via the CAN network. Upon receiving the wake-up message, the VCU enters working mode. After the VCU enters working mode, the TBOX sends a battery recharging command to the VCU. When the VCU receives the battery recharging command, it outputs a high-level wake-up signal to the BMS (Battery Management System) to configure the key at the battery swapping interface. The BMS enters the working state when it detects a continuous high-level wake-up signal at the key wake-up port. The VCU sends a power-on command to the BMS, and the BMS executes the vehicle power-on process. When the main positive relay and the main negative relay are closed and there is high voltage on the bus section, the VCU determines that the high voltage is closed and outputs. The VCU then sends an enable signal to the DC / DC converter. Upon receiving the enable signal, the DC / DC converter enters the working state and outputs current to execute the vehicle battery charging process. The preset duration and voltage threshold can be set to other values ​​according to the actual scenario. For example, the preset duration can be set to 5 hours and the opening voltage threshold can be set to 11V. This embodiment does not impose any restrictions on these values.

[0066] This embodiment proposes a battery charging control method applied to a vehicle controller, comprising: upon receiving a battery charging command from the TBOX, outputting a high-level wake-up signal to the battery management system to wake up the battery management system; while the battery management system is awakened, controlling the battery management system to execute the vehicle power-on process; and upon completion of the vehicle power-on process, charging the vehicle battery via DC / DC converter. In this embodiment, the vehicle controller, upon receiving a battery charging command from the TBOX, outputs a high-level wake-up signal to wake up the battery management system and controls the battery management system to execute the vehicle power-on process. Upon completion of the vehicle power-on process, the vehicle battery is charged via DC / DC converter. This method eliminates the need to modify the hardware and software of the battery management system. By waking up and controlling the battery management system through the vehicle controller, the vehicle battery can be charged, achieving compatibility with different types of battery packs for charging vehicle batteries and improving the user experience.

[0067] refer to Figure 4 , Figure 4 This is a flowchart illustrating the second embodiment of the power replenishment control method of the present invention.

[0068] Based on the first embodiment described above, in this embodiment, step S20 includes:

[0069] Step S201: When the battery management system is woken up, a power-on command is sent to the battery management system. When the battery management system receives the power-on command, it executes the vehicle power-on process.

[0070] It is understandable that the power-on command can be an instruction from the vehicle controller to the battery management system to execute the vehicle power-on process.

[0071] In practice, the vehicle controller continuously outputs a high-level wake-up signal to the key wake-up port configured by the battery management system to wake up the battery management system. When the battery management system is woken up, the vehicle controller sends a power-on command to the battery management system. When the battery management system receives the power-on command, it executes the vehicle power-on process.

[0072] Furthermore, in order to be compatible with different types of battery swapping packs for replenishing the vehicle battery, step S30 includes: when the vehicle power-on process is completed, outputting an enable signal to the DC / DC converter, and the DC / DC converter entering the working state to replenish the vehicle battery upon receiving the enable signal.

[0073] It is understandable that the enable signal can be a signal that controls the DC / DC converter to enter the working state.

[0074] In practice, the VCU detects the voltage of the main positive relay, the main negative relay, and the bus terminal. When the main positive relay and the main negative relay are closed and there is high voltage at the bus terminal, it determines that the vehicle power-on process has been completed and sends an enable signal to the DC / DC converter. Upon receiving the enable signal, the DC / DC converter enters the working state, outputs current, and executes the on-board battery charging process to replenish the on-board battery.

[0075] In this embodiment, when the battery management system is woken up, a power-on command is sent to the battery management system. Upon receiving the power-on command, the battery management system executes the vehicle power-on process. After waking up the battery management system, the vehicle controller controls the battery management system to execute the vehicle power-on process to replenish the vehicle battery via DC / DC converter. This allows for compatibility with different types of battery swapping packs for replenishing the vehicle battery without requiring changes to the hardware and software of the battery swapping pack.

[0076] refer to Figure 5 , Figure 5 This is a flowchart illustrating the third embodiment of the power replenishment control method of the present invention.

[0077] Based on the above embodiments, in this embodiment, after step S30, the method further includes:

[0078] Step S40: When the battery voltage of the vehicle battery is detected to reach the charging cutoff voltage, the DC / DC converter is controlled to stop charging the vehicle battery.

[0079] It is understandable that the charging cutoff voltage can be a preset voltage that stops charging the vehicle battery.

[0080] Step S50: When the DC / DC stops charging the vehicle battery, control the battery management system to execute the vehicle power-off process;

[0081] Step S60: When the vehicle power-off process is completed, stop outputting the wake-up signal to the battery management system so that the battery management system enters a dormant state or an offline state.

[0082] In practice, when the VCU detects that the battery voltage of the vehicle battery has reached the charging cutoff voltage, it stops sending the enable signal to the DC / DC converter to control the DC / DC converter to stop outputting current to charge the vehicle battery. It then sends a power-down command to the BMS to control the BMS to execute the vehicle power-down process. When the vehicle power-down process is completed, it stops outputting a high-level wake-up signal to the BMS to control the BMS to enter a sleep state.

[0083] Furthermore, in order to reduce low-voltage power consumption, after step S30, the method further includes: when the battery voltage of the vehicle battery is detected to have reached the charging cutoff voltage, a charging completion signal is sent to the TBOX; when the TBOX receives the charging completion signal, it stops sending the wake-up message; when it does not receive the wake-up message, it enters a sleep state from the working state.

[0084] In specific implementation, refer to Figure 6 , Figure 6 The diagram illustrates the process of charging the vehicle battery. After the key is turned off, all controllers go into sleep mode. The TBOX wakes up periodically and checks the battery voltage of the vehicle battery. It determines whether the battery voltage is less than the voltage threshold V1. If not, the TBOX goes into sleep mode. If so, the TBOX sends a wake-up message and a battery charging command to the VCU. The VCU continuously outputs a high-level wake-up signal to the BMS to wake up the BMS. The VCU sends a power-on command to the BMS, and the BMS executes the vehicle power-on process. The VCU determines whether the vehicle power-on process is completed. If not, it returns to the step of sending the power-on command to the BMS. If so, the VCU sends an enable signal to the DC / DC converter. The DC / DC converter outputs current to charge the vehicle battery. When the VCU detects that the battery voltage of the vehicle battery is greater than or equal to the charging cutoff voltage V2, it stops sending the enable signal to the DC / DC converter, and the DC / DC converter stops outputting. The VCU sends a power-off command to the BMS, and the BMS executes the vehicle power-off process. After the vehicle power-off process is completed, the VCU stops outputting the high-level wake-up signal. After the BMS goes into sleep mode, the VCU goes into sleep mode.

[0085] In this embodiment, when the battery voltage of the vehicle battery is detected to have reached the charging cutoff voltage, the DC / DC converter is controlled to stop charging the vehicle battery. When the DC / DC converter stops charging the vehicle battery, the battery management system is controlled to execute the vehicle power-off procedure. When the vehicle power-off procedure is completed, the wake-up signal is stopped from being output to the battery management system, causing the battery management system to enter a dormant or offline state. This embodiment can promptly stop charging the vehicle battery when its voltage reaches the charging cutoff voltage, ensuring the safety of vehicle battery charging.

[0086] Furthermore, this embodiment of the invention also proposes a storage medium storing a power-compensation control program, which, when executed by a processor, implements the steps of the power-compensation control method described above.

[0087] Reference Figure 7 , Figure 7 This is a structural block diagram of the first embodiment of the power supply control device of the present invention.

[0088] like Figure 7 As shown, the power replenishment control device proposed in this embodiment of the invention includes:

[0089] The high-level signal output module 10 is used to output a high-level wake-up signal to the battery management system when it receives a battery charging command sent by TBOX, so as to wake up the battery management system.

[0090] Control module 20 is used to control the battery management system to perform the vehicle power-on process when the battery management system is woken up;

[0091] The charging module 30 is used to charge the vehicle battery via DC / DC converter when the vehicle power-on process is completed.

[0092] In this embodiment, when the vehicle controller receives the battery charging command sent by the TBOX, it outputs a high-level wake-up signal to wake up the battery management system and controls the battery management system to execute the vehicle power-on process. After the vehicle power-on process is completed, the vehicle battery is charged via DC / DC. There is no need to change the hardware and software of the battery management system. The vehicle controller wakes up and controls the battery management system to charge the vehicle battery, realizing the function of charging the vehicle battery compatible with different types of battery packs, thus improving the user's driving experience.

[0093] Based on the first embodiment of the power replenishment control device of the present invention described above, a second embodiment of the power replenishment control device of the present invention is proposed.

[0094] In this embodiment, the high-level signal output module 10 is further configured to continuously output a high-level wake-up signal to the key wake-up port configured by the battery management system when receiving a battery charging command sent by the TBOX. The battery management system is in a working state when the key wake-up port continuously receives the high-level wake-up signal.

[0095] The high-level signal output module 10 is also used to enter the working state from the sleep state when it receives a wake-up message sent by the TBOX through the CAN network; when entering the working state, it receives the battery charging command sent by the TBOX through the CAN network.

[0096] The control module 20 is also used to send a power-on command to the battery management system when the battery management system is woken up, and the battery management system executes the vehicle power-on process when it receives the power-on command.

[0097] The charging module 30 is also used to output an enable signal to the DC / DC when the vehicle power-on process is completed. When the DC / DC receives the enable signal, it enters the working state to charge the vehicle battery.

[0098] The charging module 30 is further configured to control the DC / DC converter to stop charging the vehicle battery when the battery voltage of the vehicle battery is detected to reach the charging cutoff voltage; control the battery management system to execute the vehicle power-off process when the DC / DC converter stops charging the vehicle battery; and stop outputting the high-level wake-up signal to the battery management system when the vehicle power-off process is completed, so that the battery management system enters a sleep state or an offline state.

[0099] The charging module 30 is further configured to send a charging completion signal to the TBOX when it detects that the battery voltage of the vehicle battery has reached the charging cutoff voltage. The TBOX stops sending the wake-up message when it receives the charging completion signal; and enters a sleep state from the working state when it does not receive the wake-up message.

[0100] Other embodiments or specific implementations of the power replenishment control device of the present invention can be referred to the above-described method embodiments, and will not be repeated here.

[0101] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0102] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0103] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as read-only memory / random access memory, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0104] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A power supply control method, characterized in that, The power replenishment control method is applied to the vehicle controller, and the method includes: Upon receiving a battery charging command from TBOX, a high-level wake-up signal is output to the battery management system to wake it up. When the battery management system is woken up, the system is controlled to execute the vehicle power-on process. When the vehicle power-on process is completed, the on-board battery is recharged via DC / DC converter; Upon receiving a battery charging command from the TBOX, the step of outputting a high-level wake-up signal to the battery management system to wake it up includes: When a battery charging command is received from TBOX, a high-level wake-up signal is continuously output to the key wake-up port configured by the battery management system. The battery management system is in working state when the key wake-up port continuously receives the high-level wake-up signal. The key wake-up port is a port configured by the battery management system at the battery swapping interface of the battery swapping pack for receiving high-level wake-up signals. The key wake-up port does not receive the output signal of the key hardwire. Before the step of outputting a high-level wake-up signal to the battery management system upon receiving a battery charging command from the TBOX to wake up the battery management system, the method further includes: Upon receiving a wake-up message sent by TBOX via the CAN network, it enters the working state from the sleep state; When entering the working state, it receives the battery charging command sent by the TBOX through the CAN network.

2. The method according to any one of claims 1, characterized in that, When the battery management system is woken up, the process of controlling the battery management system to execute the vehicle power-on procedure includes: When the battery management system is woken up, a power-on command is sent to the battery management system. When the battery management system receives the power-on command, it executes the vehicle power-on process.

3. The method as described in any one of claims 1, characterized in that, When the vehicle power-on process is completed, the on-board battery is recharged via DC / DC converter, including: When the vehicle power-on process is completed, an enable signal is output to the DC / DC converter. Upon receiving the enable signal, the DC / DC converter enters a working state to recharge the vehicle battery.

4. The method according to any one of claims 1, characterized in that, After the vehicle power-on process is completed, and the on-board battery is recharged via DC / DC, the process further includes: When the battery voltage of the vehicle battery is detected to have reached the charging cutoff voltage, the DC / DC converter is controlled to stop charging the vehicle battery. When the DC / DC converter stops charging the vehicle battery, the battery management system is controlled to execute the vehicle power-off procedure. When the vehicle power-down process is completed, the output of the high-level wake-up signal to the battery management system is stopped, so that the battery management system enters a sleep state or an offline state.

5. The method as described in claim 1, characterized in that, After the vehicle power-on process is completed, and the on-board battery is recharged via DC / DC, the process further includes: When the battery voltage of the vehicle battery is detected to have reached the charging cutoff voltage, a charging completion signal is sent to the TBOX. Upon receiving the charging completion signal, the TBOX stops sending the wake-up message. If the wake-up message is not received, the device enters a sleep state from the working state.

6. A power supply control device, characterized in that, The device includes: A high-level signal output module is used to output a high-level wake-up signal to the battery management system when a battery charging command is received from the TBOX, so as to wake up the battery management system. The control module is used to control the battery management system to execute the vehicle power-on process when the battery management system is woken up. The charging module is used to charge the vehicle battery via DC / DC converter after the vehicle power-on process is completed. Upon receiving a battery charging command from the TBOX, the step of outputting a high-level wake-up signal to the battery management system to wake it up includes: When a battery charging command is received from TBOX, a high-level wake-up signal is continuously output to the key wake-up port configured by the battery management system. The battery management system is in working state when the key wake-up port continuously receives the high-level wake-up signal. The key wake-up port is a port configured by the battery management system at the battery swapping interface of the battery swapping pack for receiving high-level wake-up signals. The key wake-up port does not receive the output signal of the key hardwire. Before the step of outputting a high-level wake-up signal to the battery management system upon receiving a battery charging command from the TBOX to wake up the battery management system, the method further includes: Upon receiving a wake-up message sent by TBOX via the CAN network, it enters the working state from the sleep state; When entering the working state, it receives the battery charging command sent by the TBOX through the CAN network.

7. A power supply control device, characterized in that, The device includes: a memory, a processor, and a power-compensating control program stored in the memory and executable on the processor, the power-compensating control program being configured to implement the steps of the power-compensating control method as described in any one of claims 1 to 5.

8. A storage medium, characterized in that, The storage medium stores a power-compensation control program, which, when executed by a processor, implements the steps of the power-compensation control method as described in any one of claims 1 to 5.

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