Parking power generation control method, system, medium and equipment for over-discharge of battery

Abstract

The invention discloses a parking power generation control method and system for over-discharge of a battery, a medium and electronic equipment, and the method comprises the steps: responding to a parking power generation request sent by a whole vehicle control unit, and judging whether the current state of the battery meets a preset charging condition or not; under the condition that the preset charging condition is met, the existing low-high-voltage fault is relieved, a parking power generation agreement signal is generated and sent to the whole vehicle control unit, and timing is started; in response to a high-voltage increasing request sent by the whole vehicle control unit, executing high-voltage increasing operation so as to enable the whole vehicle to enter a parking power generation state and charge a battery; when the timing duration is larger than or equal to the preset duration, whether the charging process is normal or not is judged, and a judgment result is obtained; and determining whether to continue to charge the battery according to the judgment result. Therefore, according to the embodiment of the invention, the battery can be charged in a parking power generation mode when the whole vehicle has a low-voltage fault caused by over-discharge of the battery, and the fault handling capacity of the whole vehicle is improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle control technology, and in particular to a parking power generation control method, system, medium and electronic equipment for over-discharged batteries. Background Art

[0002] In the daily operation of hybrid vehicles, the battery is the core energy storage unit, and its performance is directly related to the operating efficiency and reliability of the entire vehicle. In particular, when the battery state of charge (SOC) is seriously too low or the single cell voltage is seriously too low, the battery performance drops sharply, which may cause the battery management system (BMS) to report a serious fault, which in turn causes the problem of high voltage under the vehicle, seriously affecting the normal operation of the vehicle.

[0003] In related technologies, for example Figure 1 As shown, the existing hybrid vehicle power system usually includes an engine, a clutch and a motor, which are connected in sequence, and the output end of the motor is connected to the transmission. The vehicle has complex operating conditions, and the battery management system (BMS) will report a serious fault when the battery is over-discharged, resulting in the vehicle being unable to be charged with high voltage and can only rely on external charging piles for charging.

[0004] However, for hybrid vehicles, in addition to charging with charging piles, there is also a charging method called parking power generation, but in this method the high-voltage system must be normal. Due to current technology, when the BMS reports a serious fault after the battery is over-discharged, the entire vehicle is under high voltage and cannot recover by itself. Parking power generation / driving power generation / energy recovery cannot be performed, resulting in the battery being unable to charge and the BMS fault unable to be eliminated. Summary of the invention

[0005] The embodiments of the present application provide a method, system, medium and electronic device for controlling parking power generation when the battery is over-discharged. In order to have a basic understanding of some aspects of the disclosed embodiments, a simple summary is given below. This summary is not a general review, nor is it intended to identify key / important components or describe the scope of protection of these embodiments. Its only purpose is to present some concepts in a simple form as a preface to the detailed description that follows.

[0006] In a first aspect, an embodiment of the present application provides a parking power generation control method for a battery over-discharged, which is applied to a battery management system, and the method includes:

[0007] In response to the parking power generation request sent by the vehicle control unit, determine whether the current state of the battery meets the preset charging conditions; the parking power generation request is generated when the vehicle has a lower high voltage fault caused by over-discharge of the battery and the vehicle control unit determines that the vehicle meets the preset parking power generation conditions;

[0008] When the preset charging conditions are met, the existing lower high voltage fault is resolved, and a parking power generation consent signal is generated and sent to the vehicle control unit to start timing;

[0009] In response to the high voltage request sent by the vehicle control unit, the high voltage operation is performed to put the vehicle into a parking power generation state to charge the battery;

[0010] When the timing duration is greater than or equal to the preset duration, determining whether the charging process is normal and obtaining a determination result;

[0011] Based on the judgment result, it is determined whether to continue charging the battery.

[0012] Optionally, battery over-discharge means that the charge state of the battery of the entire vehicle or the battery cell voltage is less than a preset value, and a low-voltage fault means that the battery management system cuts off the high-voltage power supply.

[0013] Optionally, determining whether to continue charging the battery according to the judgment result includes:

[0014] When the judgment result indicates that the charging process is normal, the battery continues to be controlled to be charged so that the whole vehicle returns to normal.

[0015] Optionally, determining whether to continue charging the battery according to the judgment result includes:

[0016] When the judgment result indicates that the charging process is abnormal, performing a lower high voltage operation to recover from the existing lower high voltage fault;

[0017] Create a prompt message to remind the user that parking power generation failed;

[0018] Send prompt information to the instrument for display.

[0019] Optionally, determining whether the charging process is normal and obtaining a determination result includes:

[0020] Obtaining an initial battery state of charge pre-stored during charging;

[0021] Get the current battery charge status of the battery;

[0022] Calculate the difference between the current battery state of charge and the initial battery state of charge;

[0023] If the difference is greater than or equal to the preset difference threshold, a judgment result indicating that the charging process is normal is generated; or,

[0024] When the difference is less than the preset difference threshold, a determination result indicating that the charging process is abnormal is generated.

[0025] Optionally, the method further includes:

[0026] When there is a driving demand, a high voltage lowering operation is performed to make the vehicle exit the parking power generation state; the driving demand at least includes a gear shifting operation or a handbrake releasing operation; or,

[0027] When there is no driving demand, the battery continues to be charged.

[0028] Optionally, the preset parking power generation conditions include the vehicle speed being 0, the current gear position of the vehicle being N gear, and the handbrake not being released.

[0029] In a second aspect, an embodiment of the present application provides a parking power generation control system for a battery over-discharge, the system comprising:

[0030] A first response module is used to respond to a parking power generation request sent by the vehicle control unit to determine whether the current state of the battery meets the preset charging condition; the parking power generation request is generated when the vehicle has a lower high voltage fault caused by over-discharge of the battery and the vehicle control unit determines that the vehicle meets the preset parking power generation condition;

[0031] A release module is used to release the existing lower high voltage fault when the preset charging conditions are met, and generate a parking power generation consent signal, which is sent to the vehicle control unit to start timing;

[0032] A second response module is used to respond to the high voltage request sent by the vehicle control unit and perform a high voltage operation to put the vehicle into a parking power generation state to charge the battery;

[0033] A judgment module, used to judge whether the charging process is normal when the timing time is greater than or equal to the preset time, and obtain a judgment result;

[0034] The determination module is used to determine whether to continue charging the battery according to the judgment result.

[0035] In a third aspect, an embodiment of the present application provides a computer storage medium, which stores a plurality of instructions, and the instructions are suitable for being loaded by a processor and executing the above-mentioned method steps.

[0036] In a fourth aspect, an embodiment of the present application provides an electronic device, which may include: a processor and a memory; wherein the memory stores a computer program, and the computer program is suitable for being loaded by the processor and executing the above-mentioned method steps.

[0037] The technical solution provided by the embodiments of the present application may have the following beneficial effects:

[0038] In the embodiments of the present application, on the one hand, when the vehicle has a lower high-voltage fault caused by battery over-discharge and meets the preset parking power generation conditions, the battery management system can temporarily relieve the lower high-voltage fault to achieve parking power generation, thereby improving the fault handling capability of the vehicle; on the other hand, the battery management system only temporarily relieves the lower high-voltage fault for parking charging when the vehicle meets the preset parking power generation conditions. If the charging is normal within a period of time, the charging will continue; if the charging is abnormal, the lower high-voltage fault will be restored in time to prevent damage to the battery.

[0039] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0041] Figure 1 It is a component architecture diagram of a vehicle interior provided by an embodiment of the present application;

[0042] Figure 2 It is a flow chart of a parking power generation control method for battery over-discharge provided by the present application;

[0043] Figure 3 This is a flow chart of a parking power generation control process for a battery over-discharged provided by the present application;

[0044] Figure 4 It is a structural schematic diagram of a parking power generation control system for battery over-discharge provided in an embodiment of the present application;

[0045] Figure 5 It is a structural schematic diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0046] The following description and the accompanying drawings sufficiently illustrate specific embodiments of the present application to enable those skilled in the art to practice them.

[0047] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0048] When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are only examples of systems and methods consistent with some aspects of the present application as detailed in the attached claims.

[0049] In the description of the present application, it should be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances. In addition, in the description of the present application, unless otherwise specified, "multiple" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0050] The present application provides a method, system, medium and electronic device for parking power generation control when the battery is over-discharged, so as to solve the problems existing in the above-mentioned related technical problems. In the embodiments of the present application, on the one hand, when the vehicle has a lower high voltage fault caused by battery over-discharge and meets the preset parking power generation conditions, the battery management system can temporarily release the lower high voltage fault to achieve parking power generation, thereby improving the fault handling capability of the vehicle; on the other hand, the battery management system only temporarily releases the lower high voltage fault to perform parking charging when the vehicle meets the preset parking power generation conditions. If the charging is normal within a period of time, the charging continues. If the charging is abnormal, the lower high voltage fault is restored in time, so as to prevent damage to the battery. The following is a detailed description using an exemplary embodiment.

[0051] The following will be combined with the attached Figure 1 -Attached Figure 3 , a parking power generation control method for battery over-discharge provided in an embodiment of the present application is introduced in detail. The method can be implemented by relying on a computer program and can be run on a parking power generation control system for battery over-discharge based on a von Neumann system. The computer program can be integrated into an application or run as an independent tool application.

[0052] See also Figure 2 , a flow chart of a method for controlling parking power generation when a battery is over-discharged is provided in an embodiment of the present application, which is applied to a battery management system. Figure 2 As shown, the method of the embodiment of the present application may include the following steps:

[0053] S101, in response to a parking power generation request sent by a vehicle control unit, determining whether a current state of the battery meets a preset charging condition; the parking power generation request is generated when the vehicle has a lower high voltage fault caused by over-discharge of the battery and the vehicle control unit determines that the vehicle meets the preset parking power generation condition;

[0054] Among them, the vehicle control unit (HCU) is responsible for managing the component of the vehicle's high-voltage system, including the control and coordination of high-voltage components such as batteries and motors. The parking power generation request is a signal sent by the HCU to the BMS, indicating that the vehicle is ready to perform power generation operations in the parked state. The battery management system (BMS) is a system responsible for monitoring and managing the battery status, including the battery's voltage, current, temperature, and state of charge (SOC). The preset charging conditions are the conditions used by the BMS to determine whether the battery is suitable for charging, which may include parameters such as the battery's SOC, temperature, and voltage. The preset parking power generation conditions include the vehicle speed being 0, the current gear position of the vehicle being N, and the handbrake not being released.

[0055] Among them, battery over-discharge means that the charge state of the battery of the whole vehicle or the battery cell voltage is less than the preset value, and the low-voltage fault means that the battery management system cuts off the high-voltage power supply.

[0056] In some embodiments of the present application, a hybrid vehicle is driving in city traffic, and the BMS reports a serious fault of over-discharge of the battery, so the whole vehicle is under high voltage. It is judged that the state of charge of the battery of the whole vehicle or the voltage of the battery cell is less than the preset value. If a parking power generation message is generated, it will be displayed on the instrument to prompt the user to perform parking power generation. At the same time, the HCU determines whether the whole vehicle meets the parking power generation conditions except the high-voltage state, including the vehicle speed is 0, N gear, handbrake, etc. If so, a parking power generation request is generated and sent to the battery management system BMS. The battery management system BMS responds to the parking power generation request sent by the vehicle control unit. The BMS checks the current state of the battery, including SOC, voltage, temperature, etc., and determines whether the current state of the battery meets the preset charging conditions.

[0057] S102, when the preset charging conditions are met, the existing lower high voltage fault is resolved, and a parking power generation consent signal is generated and sent to the vehicle control unit to start timing;

[0058] In some embodiments of the present application, once the BMS confirms that the battery status meets the preset charging conditions, the BMS will release the lower high voltage fault state triggered by battery over-discharge, which means that the BMS will allow the high voltage system to be reactivated. The BMS generates a signal indicating that the battery is ready for parking power generation, which is a clear indication of consent to parking power generation. The BMS sends this signal of consent to parking power generation back to the HCU, informing the HCU that the battery is ready for charging. After receiving the consent signal from the BMS, the HCU starts timing to track the duration of the parking power generation process.

[0059] S103, in response to the high voltage request sent by the vehicle control unit, performing a high voltage operation to put the vehicle into a parking power generation state to charge the battery;

[0060] Among them, the high-voltage request is a signal sent by the HCU to the BMS, requesting the BMS to switch the vehicle's high-voltage system from a low-voltage state to a high-voltage state for parking power generation. Executing the high-voltage operation means that the BMS responds to the request of the HCU and activates the high-voltage system through the internal control logic, so that the vehicle enters a state where parking power generation can be performed. The parking power generation state refers to the working mode in which the vehicle charges the battery through the engine drive motor when the vehicle is stationary (such as the vehicle speed is 0, it is in neutral, and the handbrake is pulled up). In the parking power generation state, the vehicle's engine drive motor generates electrical energy, which is used to charge the battery.

[0061] In some embodiments of the present application, after receiving a request from the HCU, the BMS checks the battery status and confirms that the battery can safely accept charging. If everything is normal, the BMS performs an operation to activate the high-voltage system and allow current to flow to the battery. After the high-voltage system is activated, the entire vehicle enters the parking power generation state. At this time, the engine starts and drives the P2 motor through the clutch. The motor runs as a generator and the generated electrical energy is transmitted to the battery through a high-voltage cable. In the parking power generation state, the electrical energy generated by the motor is used to charge the battery.

[0062] S104, when the timed duration is greater than or equal to the preset duration, determining whether the charging process is normal and obtaining a determination result;

[0063] In some embodiments of the present application, the specific process of determining whether the charging process is normal and obtaining the determination result includes: obtaining an initial battery state of charge pre-stored during charging; obtaining the current battery state of charge of the battery; calculating the difference between the current battery state of charge and the initial battery state of charge; when the difference is greater than or equal to a preset difference threshold, generating a determination result indicating that the charging process is normal; or, when the difference is less than a preset difference threshold, generating a determination result indicating that the charging process is abnormal.

[0064] For example, before charging begins, the BMS records the initial state of charge (SOC_initial) of the battery. This value is the percentage of remaining power in the battery before charging. At some point during the charging process, the BMS again measures and records the current state of charge (SOC_current) of the battery. This value is the percentage of remaining power in the battery at a certain point in the charging process. The BMS sets a preset difference threshold (ΔSOC_threshold), which is a predetermined value used to determine whether the charging process is normal. This threshold is set based on the characteristics and safety requirements of the battery. If the calculated ΔSOC is greater than or equal to ΔSOC_threshold, the BMS generates a judgment result indicating that the charging process is normal. This means that the battery charge has reached the expected amount and the charging process is normal. If the ΔSOC is less than the ΔSOC_threshold, the BMS generates a judgment result indicating that the charging process is abnormal. This may mean that the charging efficiency is low or there are other problems.

[0065] Assume that at the beginning of charging, the initial state of charge of the battery is 20% (SOC_initial = 20%), and after charging for a period of time, the current state of charge is 30% (SOC_current = 30%). The preset difference threshold is 10% (ΔSOC_threshold = 10%). ΔSOC = SOC_current-SOC_initial = 30%-20% = 10%. Since ΔSOC is equal to ΔSOC_threshold, the BMS generates a judgment result indicating that the charging process is normal. If ΔSOC is less than 10%, such as only 5%, then the BMS will generate a judgment result indicating that the charging process is abnormal, and further diagnosis and processing may be required.

[0066] S105: Determine whether to continue charging the battery based on the judgment result.

[0067] In some embodiments of the present application, the specific process of determining whether to continue charging the battery based on the judgment result includes: when the judgment result indicates that the charging process is normal, continue to control the charging of the battery to restore the entire vehicle to normal.

[0068] In other embodiments of the present application, the specific process of determining whether to continue charging the battery based on the judgment result includes: when the judgment result indicates that the charging process is abnormal, performing a lower high voltage operation to restore the existing lower high voltage fault; creating a prompt message to remind the user that parking power generation has failed; and sending the prompt message to the instrument for display.

[0069] Furthermore, when there is a driving demand, a high-voltage operation is performed to make the entire vehicle exit the parking power generation state; the driving demand at least includes a gear shifting operation or a handbrake release operation; or, when there is no driving demand, the battery continues to be charged.

[0070] For example Figure 3 As shown, Figure 3 This is a flow chart of the parking power generation control process when the battery is over-discharged, provided by the present application. First, it is determined whether the battery has a low voltage due to a serious over-discharge fault. If not (N), the process ends. If it is (Y), the instrument prompts the driver to perform parking power generation. The HCU (vehicle control unit) determines whether the vehicle meets the parking power generation conditions except for the high-voltage state. If not (N), the process returns to the battery over-discharge fault judgment and continues to monitor. If (Y) is satisfied, the HCU sends a parking power generation request to the BMS (battery management system). The BMS determines whether the current state of the battery meets the charging conditions. If not (N), the process ends. If (Y) is satisfied, the process continues. The BMS temporarily relieves the serious faults related to over-discharge, feeds back to the HCU to agree to the parking power generation signal, and starts timing. The HCU sends a high-voltage request, the BMS performs the high-voltage operation, and the vehicle enters the parking power generation state. It is determined whether the timer has reached the preset value. If it has not reached (N), the parking power generation continues. If it reaches (Y), the process continues. BMS determines whether the charging process is normal. If it is not normal (N), it will recover from serious over-discharge related faults, lower the high voltage of the whole vehicle, and remind the driver that the parking power generation has failed. The process ends. If it is normal (Y), proceed to the next step. After a period of parking power generation, BMS will automatically eliminate serious over-discharge related faults and the vehicle status will return to normal. The process ends after the vehicle status returns to normal. During the parking power generation process, it is judged in real time whether the driver has the need to drive. If yes (Y), exit the parking power generation and BMS executes normal logic. If not (N), return to continue parking power generation.

[0071] In the embodiments of the present application, on the one hand, when the vehicle has a lower high-voltage fault caused by battery over-discharge and meets the preset parking power generation conditions, the battery management system can temporarily relieve the lower high-voltage fault to achieve parking power generation, thereby improving the fault handling capability of the vehicle; on the other hand, the battery management system only temporarily relieves the lower high-voltage fault for parking charging when the vehicle meets the preset parking power generation conditions. If the charging is normal within a period of time, the charging will continue; if the charging is abnormal, the lower high-voltage fault will be restored in time to prevent damage to the battery.

[0072] The following is a system embodiment of the present application, which can be used to execute the method embodiment of the present application. For details not disclosed in the system embodiment of the present application, please refer to the method embodiment of the present application.

[0073] See also Figure 4, which shows a schematic diagram of the structure of a parking power generation control system for battery over-discharge provided by an exemplary embodiment of the present application. The parking power generation control system for battery over-discharge can be implemented as all or part of an electronic device through software, hardware or a combination of both. The system 1 includes a first response module 10, a release module 20, a second response module 30, a judgment module 40, and a determination module 50.

[0074] The first response module 10 is used to respond to the parking power generation request sent by the vehicle control unit to determine whether the current state of the battery meets the preset charging condition; the parking power generation request is generated when the vehicle has a low-voltage fault caused by over-discharge of the battery and the vehicle control unit determines that the vehicle meets the preset parking power generation condition;

[0075] The release module 20 is used to release the existing lower high voltage fault when the preset charging conditions are met, and generate a parking power generation consent signal, send it to the vehicle control unit, and start timing;

[0076] The second response module 30 is used to respond to the high voltage request sent by the vehicle control unit and perform a high voltage operation to put the vehicle into a parking power generation state to charge the battery;

[0077] The judging module 40 is used to judge whether the charging process is normal and obtain a judgment result when the timing duration is greater than or equal to the preset duration;

[0078] The determination module 50 is used to determine whether to continue charging the battery according to the determination result.

[0079] It should be noted that the parking power generation control system for battery over-discharge provided in the above embodiment only uses the division of the above functional modules as an example when executing the parking power generation control method for battery over-discharge. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. In addition, the parking power generation control system for battery over-discharge provided in the above embodiment and the parking power generation control method for battery over-discharge belong to the same concept, and the implementation process thereof is detailed in the method embodiment, which will not be repeated here.

[0080] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0081] In the embodiments of the present application, on the one hand, when the vehicle has a lower high-voltage fault caused by battery over-discharge and meets the preset parking power generation conditions, the battery management system can temporarily relieve the lower high-voltage fault to achieve parking power generation, thereby improving the fault handling capability of the vehicle; on the other hand, the battery management system only temporarily relieves the lower high-voltage fault for parking charging when the vehicle meets the preset parking power generation conditions. If the charging is normal within a period of time, the charging will continue; if the charging is abnormal, the lower high-voltage fault will be restored in time to prevent damage to the battery.

[0082] The present application also provides a computer-readable medium having program instructions stored thereon, which, when executed by a processor, implements the parking power generation control method for battery over-discharge provided by the above-mentioned various method embodiments.

[0083] The present application also provides a computer program product comprising instructions, which, when executed on a computer, enables the computer to execute the parking power generation control method for battery over-discharge according to the above-mentioned various method embodiments.

[0084] See also Figure 5 , is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. Figure 5 As shown, the electronic device 1000 may include: at least one processor 1001 , at least one network interface 1004 , a user interface 1003 , a memory 1005 , and at least one communication bus 1002 .

[0085] The communication bus 1002 is used to realize the connection and communication between these components.

[0086] The user interface 1003 may include a display screen (Display) and a camera (Camera), and the optional user interface 1003 may also include a standard wired interface and a wireless interface.

[0087] The network interface 1004 may optionally include a standard wired interface or a wireless interface (such as a WI-FI interface).

[0088] Among them, the processor 1001 may include one or more processing cores. The processor 1001 uses various interfaces and lines to connect various parts within the entire electronic device 1000, and executes various functions and processes data of the electronic device 1000 by running or executing instructions, programs, code sets or instruction sets stored in the memory 1005, and calling data stored in the memory 1005. Optionally, the processor 1001 can be implemented in at least one hardware form of digital signal processing (Digital Signal Processing, DSP), field programmable gate array (Field-Programmable Gate Array, FPGA), and programmable logic array (Programmable Logic Array, PLA). The processor 1001 can integrate one or a combination of a central processing unit (Central Processing Unit, CPU), a graphics processing unit (Graphics Processing Unit, GPU) and a modem. Among them, the CPU mainly processes the operating system, user interface and application programs; the GPU is responsible for rendering and drawing the content to be displayed on the display screen; the modem is used to process wireless communications. It can be understood that the above-mentioned modem may not be integrated into the processor 1001, and it can be implemented separately through a chip.

[0089] Among them, the memory 1005 may include a random access memory (Random Access Memory, RAM) and may also include a read-only memory (Read-Only Memory). Optionally, the memory 1005 includes a non-transitory computer-readable storage medium. The memory 1005 can be used to store instructions, programs, codes, code sets or instruction sets. The memory 1005 may include a program storage area and a data storage area, wherein the program storage area may store instructions for implementing an operating system, instructions for at least one function (such as a touch function, a sound playback function, an image playback function, etc.), instructions for implementing the above-mentioned various method embodiments, etc.; the data storage area may store data involved in the above-mentioned various method embodiments, etc. The memory 1005 may also be optionally at least one storage system located away from the aforementioned processor 1001. As Figure 5 As shown, the memory 1005 as a computer storage medium may include an operating system, a network communication module, a user interface module, and an application program for parking power generation control when the battery is over-discharged.

[0090] exist Figure 5In the electronic device 1000 shown, the user interface 1003 is mainly used to provide an input interface for the user and obtain data input by the user; and the processor 1001 can be used to call the parking power generation control application for battery over-discharge stored in the memory 1005, and specifically perform the following operations:

[0091] In response to the parking power generation request sent by the vehicle control unit, determine whether the current state of the battery meets the preset charging conditions; the parking power generation request is generated when the vehicle has a lower high voltage fault caused by over-discharge of the battery and the vehicle control unit determines that the vehicle meets the preset parking power generation conditions;

[0092] When the preset charging conditions are met, the existing lower high voltage fault is resolved, and a parking power generation consent signal is generated and sent to the vehicle control unit to start timing;

[0093] In response to the high voltage request sent by the vehicle control unit, the high voltage operation is performed to put the vehicle into a parking power generation state to charge the battery;

[0094] When the timing duration is greater than or equal to the preset duration, determining whether the charging process is normal and obtaining a determination result;

[0095] Based on the judgment result, it is determined whether to continue charging the battery.

[0096] In one embodiment, when the processor 1001 determines whether to continue charging the battery according to the judgment result, it specifically performs the following operations:

[0097] When the judgment result indicates that the charging process is normal, the battery continues to be controlled to be charged so that the whole vehicle returns to normal.

[0098] In one embodiment, when the processor 1001 determines whether to continue charging the battery according to the judgment result, it specifically performs the following operations:

[0099] When the judgment result indicates that the charging process is abnormal, performing a lower high voltage operation to recover from the existing lower high voltage fault;

[0100] Create a prompt message to remind the user that parking power generation failed;

[0101] Send prompt information to the instrument for display.

[0102] In one embodiment, when the processor 1001 determines whether the charging process is normal and obtains the determination result, the processor 1001 specifically performs the following operations:

[0103] Obtaining an initial battery state of charge pre-stored during charging;

[0104] Get the current battery charge status of the battery;

[0105] Calculate the difference between the current battery state of charge and the initial battery state of charge;

[0106] If the difference is greater than or equal to the preset difference threshold, a judgment result indicating that the charging process is normal is generated; or,

[0107] When the difference is less than the preset difference threshold, a determination result indicating that the charging process is abnormal is generated.

[0108] In one embodiment, the processor 1001 further performs the following operations:

[0109] When there is a driving demand, a high voltage lowering operation is performed to make the vehicle exit the parking power generation state; the driving demand at least includes a gear shifting operation or a handbrake releasing operation; or,

[0110] When there is no driving demand, the battery continues to be charged.

[0111] In the embodiments of the present application, on the one hand, when the vehicle has a lower high-voltage fault caused by battery over-discharge and meets the preset parking power generation conditions, the battery management system can temporarily relieve the lower high-voltage fault to achieve parking power generation, thereby improving the fault handling capability of the vehicle; on the other hand, the battery management system only temporarily relieves the lower high-voltage fault for parking charging when the vehicle meets the preset parking power generation conditions. If the charging is normal within a period of time, the charging will continue; if the charging is abnormal, the lower high-voltage fault will be restored in time to prevent damage to the battery.

[0112] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program, and the program for parking power generation control when the battery is over-discharged can be stored in a computer-readable storage medium, and when the program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, the storage medium of the program for parking power generation control when the battery is over-discharged can be a disk, an optical disk, a read-only storage memory, or a random access memory, etc.

[0113] The above disclosure is only the preferred embodiment of the present application, which certainly cannot be used to limit the scope of rights of the present application. Therefore, equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A parking power generation control method for battery over-discharge, characterized in that: Applied to a battery management system, the method comprises: In response to a parking power generation request sent by a vehicle control unit, determining whether the current state of the battery meets a preset charging condition; the parking power generation request is generated when the vehicle has a lower high voltage fault caused by over-discharge of the battery and the vehicle control unit determines that the vehicle meets the preset parking power generation condition; When the preset charging conditions are met, the existing lower high voltage fault is resolved, and a parking power generation consent signal is generated and sent to the vehicle control unit to start timing; In response to the high voltage request sent by the vehicle control unit, a high voltage operation is performed to put the vehicle into a parking power generation state to charge the battery; When the timing duration is greater than or equal to the preset duration, determining whether the charging process is normal and obtaining a determination result; According to the judgment result, it is determined whether to continue charging the battery.

2. The method according to claim 1, characterized in that The battery over-discharge means that the charge state of the battery of the whole vehicle or the battery cell voltage is less than a preset value, and the low-voltage fault means that the battery management system cuts off the high-voltage power supply.

3. The method according to claim 1, characterized in that The step of determining whether to continue charging the battery according to the judgment result includes: When the judgment result indicates that the charging process is normal, the battery continues to be controlled to be charged so that the entire vehicle returns to normal.

4. The method according to claim 1, characterized in that: The step of determining whether to continue charging the battery according to the judgment result includes: When the judgment result indicates that the charging process is abnormal, performing a lower high voltage operation to recover from the existing lower high voltage fault; Create a prompt message to remind the user that parking power generation failed; The prompt information is sent to the instrument for display.

5. The method according to claim 1, characterized in that The determining whether the charging process is normal and obtaining a determination result includes: Obtaining an initial battery state of charge pre-stored during charging; Obtaining the current battery state of charge of the battery; Calculating a difference between the current battery state of charge and the initial battery state of charge; If the difference is greater than or equal to a preset difference threshold, generating a judgment result indicating that the charging process is normal; or, When the difference is less than a preset difference threshold, a judgment result indicating that the charging process is abnormal is generated.

6. The method according to any one of claims 1 to 5, characterized in that: The method further comprises: In the case of a driving demand, a high voltage lowering operation is performed to make the vehicle exit the parking power generation state; the driving demand at least includes a gear shifting operation or a handbrake releasing operation; or, When there is no driving demand, the battery continues to be charged.

7. The method according to claim 1, characterized in that The preset parking power generation conditions include that the vehicle speed is 0, the current gear position of the vehicle is N gear, and the handbrake is not released.

8. A parking power generation control system for battery over-discharge, characterized in that: The system comprises: A first response module, for responding to a parking power generation request sent by a vehicle control unit, and determining whether a current state of the battery meets a preset charging condition; the parking power generation request is generated when the vehicle has a lower high voltage fault caused by over-discharge of the battery and the vehicle control unit determines that the vehicle meets the preset parking power generation condition; A release module is used to release the existing lower high voltage fault when the preset charging conditions are met, and generate a parking power generation consent signal, send it to the vehicle control unit, and start timing; A second response module is used to respond to the high voltage request sent by the vehicle control unit and perform a high voltage operation to make the vehicle enter a parking power generation state and charge the battery; A judgment module, used to judge whether the charging process is normal when the timing time is greater than or equal to the preset time, and obtain a judgment result; The determination module is used to determine whether to continue charging the battery according to the determination result.

9. A computer storage medium, characterized in that: The computer storage medium stores a plurality of instructions, and the instructions are suitable for being loaded by a processor and executing the method according to any one of claims 1 to 7.

10. An electronic device, characterized in that: include: A processor and a memory; wherein the memory stores a computer program, and the computer program is suitable for being loaded by the processor and executing the method according to any one of claims 1 to 7.

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