Method and device for recovering abnormal reset of vehicle battery management system

Abstract

The invention provides a recovery method and device for abnormal reset of a vehicle battery management system, electronic equipment and a storage medium, and the method comprises the steps: detecting a first relay pull-in state maintaining circuit and a second relay pull-in state maintaining circuit; at least one of the first relay pull-in state maintaining circuit and the second relay pull-in state maintaining circuit is in pull-in maintaining abnormity, and charging detection is carried out on the first relay pull-in state maintaining circuit and the second relay pull-in state maintaining circuit in a non-high-voltage state; the first relay pull-in state maintaining circuit and the second relay pull-in state maintaining circuit are both pulled in and maintained to be normal, charging detection is conducted on the closed states of the first relay pull-in state maintaining circuit and the second relay pull-in state maintaining circuit, and recovery of abnormal reset of the vehicle battery management system is achieved. According to the invention, the abnormal reset of the battery management system can be rapidly recovered, the efficiency is improved, the potential safety hazard is reduced, and the performance is improved.

Description

Technical Field

[0001] The present application relates to the field of battery control technology, and in particular to a recovery method, device, electronic device and storage medium for abnormal reset of a vehicle battery management system. Background Art

[0002] As vehicle systems become more and more complex, the probability of abnormalities is also increasing. When the vehicle is operating normally, if the battery management system (BMS) is abnormally reset, it will cause the high-voltage circuit between the power battery and other high-voltage components to be disconnected, and the vehicle will lose power and suddenly slow down. If it is in a high-speed driving condition, it will seriously threaten the safety of life and property of the occupants, posing a huge safety risk.

[0003] In the prior art, there are two main response plans for the scenario where the battery management system undergoes an abnormal reset during driving conditions: one is to record the relevant information when the abnormal reset occurs for subsequent analysis. This method does not take into account the restoration of vehicle power after the abnormal reset occurs, and the risk still exists; the other is to store the key operating information of the vehicle at the time of the abnormal reset, which is used to quickly restore the vehicle's driving status after the abnormal reset occurs. However, this method ignores the fact that the vehicle is still in a state of temporary power loss during the abnormal reset. Rapidly closing the relay after the abnormal reset will cause a high-voltage shock to other capacitive components, affecting their lifespan, or causing the capacitive components to breakdown, posing a safety hazard. Summary of the invention

[0004] The purpose of this application is to provide a method, device, electronic device and storage medium for recovering an abnormal reset of a vehicle battery management system, which can quickly recover an abnormal reset of the battery management system, improve efficiency, reduce safety hazards during the abnormal reset recovery process, improve safety performance, and provide protection for the normal operation of the battery management system.

[0005] In a first aspect, an embodiment of the present application provides a method for recovering a vehicle battery management system from abnormal reset, the method comprising:

[0006] Detecting a first relay energized state maintaining circuit and a second relay energized state maintaining circuit of the battery management system;

[0007] If at least one of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit is energized abnormally, determining that the driving state corresponding to the battery management system is a non-high-voltage state, and performing charging detection on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively in the non-high-voltage state, and then entering a high-voltage state;

[0008] If the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are both energized and maintained normally, charging detection is performed on the closed states of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively, and key information of the vehicle driving process is stored in real time. During the abnormal reset, the key information storage value before the abnormality is sent to realize the recovery of the abnormal reset of the vehicle battery management system.

[0009] In the above implementation process, the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are charged and detected to ensure that there is no problem with charging, and the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are discharged in time when the high voltage is applied, which does not affect subsequent operations, thereby improving the recovery efficiency of abnormal reset, reducing safety hazards in the abnormal reset recovery process, improving safety performance, and providing guarantee for the normal operation of the battery management system.

[0010] Furthermore, after the step of detecting the first relay energized state maintaining circuit and the second relay energized state maintaining circuit of the battery management system, the method further includes:

[0011] The first relay energized state maintaining circuit and the second relay energized state maintaining circuit are discharged and controlled to prevent the first relay energized state maintaining circuit from energizing the first relay and to prevent the second relay energized state maintaining circuit from energizing the second relay.

[0012] In the above implementation process, the discharge control of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit is timely performed to avoid continuous energization of the relays, thereby improving the use efficiency of the relays, increasing their service life, and avoiding safety hazards.

[0013] Furthermore, before the step of performing charging detection on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively in the non-high-voltage state and then entering the high-voltage state, the step further includes:

[0014] Under the non-high voltage state, the closed states of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are respectively detected to determine whether the energized state maintaining circuits of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are both normal;

[0015] If so, determining the target power mode to be the upper high voltage normal mode;

[0016] If not, abnormal power-on detection is performed on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively to determine the target power mode.

[0017] In the above implementation process, the closed states of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are detected in a non-high voltage state, and the power mode is confirmed after determining that the energization of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are maintained normally, thereby improving the protection of components in the battery management system and effectively avoiding safety hazards.

[0018] Furthermore, the step of performing abnormal power detection on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively to determine the target power mode includes:

[0019] Perform abnormal electrification detection on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively, and determine whether there is and only one abnormal electrification in the first relay energized state maintaining circuit and the second relay energized state maintaining circuit;

[0020] If so, determining that the target power mode is an upper high voltage limit power mode;

[0021] If not, report the fault.

[0022] In the above implementation process, abnormal power-on detection is performed on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit, which can quickly and accurately determine whether there is a fault in the first relay energized state maintaining circuit and the second relay energized state maintaining circuit, and is conducive to determining the fault location, providing support for the troubleshooting of abnormal reset circuit faults.

[0023] Furthermore, after the step of performing abnormal power detection on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively and determining the target power mode, the step further includes:

[0024] In the target power mode, the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are charged respectively, and charging abnormality detection is performed on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively;

[0025] Determining whether at least one of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit has a charging abnormality;

[0026] If so, report the fault;

[0027] If not, obtain test results.

[0028] In the above implementation process, the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are charged and charged and detected under the target power mode, which can detect circuit anomalies in the battery management system under the premise of safety, and is helpful for fault location and troubleshooting.

[0029] Furthermore, the step of performing charging detection on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively in the non-high-voltage state and then entering the high-voltage state comprises:

[0030] Performing charging detection on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively in a non-high voltage state;

[0031] If the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are both energized and maintained normally, the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are controlled to be closed, and the driving state corresponding to the battery management system is determined to be a high voltage state.

[0032] In the above implementation process, detection is performed under a non-high voltage state, which can improve the accuracy of abnormal reset recovery and enhance safety.

[0033] Furthermore, after the step of charging and detecting the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively in the non-high-voltage state and then entering the high-voltage state, the method further includes:

[0034] Under the high-voltage state, respectively detecting the closed states of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit to determine whether the energized state maintaining circuits of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are both normal;

[0035] If so, the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are charged respectively, and at the same time, charging abnormality detection is performed on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively;

[0036] If at least one of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit has a charging abnormality, a high voltage is applied and discharge control is performed on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit at the same time to prevent the first relay energized state maintaining circuit from energizing the first relay and to prevent the second relay energized state maintaining circuit from energizing the second relay.

[0037] In the above implementation process, it is ensured that during the abnormal reset and repair process of the battery management system, the components in the battery management system will not be impacted, and can be restored quickly and stably, thereby improving the protection of the battery.

[0038] In a second aspect, an embodiment of the present application further provides a recovery device for abnormal reset of a vehicle battery management system, the device comprising:

[0039] A pull-in state detection module, used for detecting a first relay pull-in state maintaining circuit and a second relay pull-in state maintaining circuit of the battery management system;

[0040] an abnormal reset detection module, for determining that the driving state corresponding to the battery management system is a non-high-voltage state if at least one of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit is abnormal, and performing charging detection on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively in the non-high-voltage state and then entering a high-voltage state;

[0041] The abnormal reset recovery module is used to perform charging detection on the closed states of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively if both the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are energized and maintained normally, and to store key information during vehicle driving in real time, and to send the key information storage value before the abnormality during the abnormal reset period to realize the recovery of the abnormal reset of the vehicle battery management system.

[0042] In the above implementation process, the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are charged and detected to ensure that there is no problem with charging, and the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are discharged in time when the high voltage is applied, which does not affect subsequent operations, thereby improving the recovery efficiency of abnormal reset, reducing safety hazards in the abnormal reset recovery process, improving safety performance, and providing guarantee for the normal operation of the battery management system.

[0043] In a third aspect, an embodiment of the present application provides an electronic device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the method described in any one of the first aspects when executing the computer program.

[0044] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, on which instructions are stored. When the instructions are executed on a computer, the computer executes the method as described in any one of the first aspects.

[0045] Other features and advantages of the present disclosure will be set forth in the following description, or some features and advantages may be inferred or unambiguously determined from the description, or may be learned by implementing the above-mentioned technology of the present disclosure.

[0046] And it can be implemented according to the contents of the specification. The following is a detailed description of the preferred embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the range values. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying any creative work.

[0048] Figure 1 A flowchart of a recovery method for abnormal reset of a vehicle battery management system is provided for an embodiment of the present application;

[0049] Figure 2 A schematic diagram of the structure of a recovery device for abnormal resetting of a vehicle battery management system is provided for an embodiment of the present application;

[0050] Figure 3 A schematic diagram of the structural composition of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0051] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0052] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0053] The specific implementation methods of the present application are further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application, but are not used to limit the scope of the present application.

[0054] Embodiment 1

[0055] Figure 1 FIG. 1 is a flow chart of a method for recovering a vehicle battery management system from abnormal reset provided by an embodiment of the present application. Figure 1 As shown, the method includes:

[0056] S1, detecting a first relay energized state maintaining circuit and a second relay energized state maintaining circuit of a battery management system;

[0057] S2, if at least one of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit is abnormal, determine that the driving state corresponding to the battery management system is a non-high-voltage state, and perform charging detection on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively in the non-high-voltage state and then enter the high-voltage state;

[0058] S3, if the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are both energized and maintained normally, charging detection is performed on the closed states of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively, and key information of the vehicle driving process is stored in real time. During the abnormal reset, the key information storage value before the abnormality is sent to realize the recovery of the abnormal reset of the vehicle battery management system.

[0059] In the above implementation process, the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are charged and detected to ensure that there is no problem with charging, and the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are discharged in time when the high voltage is applied, which does not affect subsequent operations, thereby improving the recovery efficiency of abnormal reset, reducing safety hazards in the abnormal reset recovery process, improving safety performance, and providing guarantee for the normal operation of the battery management system.

[0060] The abnormal reset period refers to the period during which the battery management system is initialized after the abnormal detection flag of the battery management system is set, during which the key information storage value before the abnormal detection flag of the battery management system is set is sent.

[0061] In the embodiment of the present application, an abnormal reset occurs under the high-voltage state. During the abnormal reset recovery period (i.e., from the occurrence of the abnormal reset to re-entering the high-voltage state), the two relays (the first relay energized state maintaining circuit and the second relay energized state maintaining circuit) are respectively maintained by the energized state maintaining module circuits to maintain the energization of the main positive relay (the first relay energized state maintaining circuit) and the main negative relay (the second relay energized state maintaining circuit) to ensure the normal operation of the high-voltage circuit.

[0062] In S1, when the vehicle's battery management system is just awakened, it will first determine whether it is an abnormal reset during the initialization stage. If not, it will follow the normal power-on process. At this time, the battery management system enters a non-high-voltage state, and detects the closed state of the first relay closure state maintaining circuit and the second relay closure state maintaining circuit respectively to determine whether their closure maintenance is normal, that is, discharges the closure state maintaining module circuit and performs abnormal power-on detection.

[0063] After an abnormal reset occurs, the battery management system is reinitialized and enters the abnormal reset recovery process. The closing state of the main positive relay and the main negative relay is detected to determine whether the two relays are normally maintained.

[0064] If any relay remains abnormally closed, it will enter a non-high voltage state to avoid the risk of capacitive components breaking down due to the sudden closure of the relay after it is disconnected.

[0065] If both relays are energized and maintain normal operation, the main positive relay and main negative closing drive command will be issued to enter the high voltage state.

[0066] Furthermore, after S1, it also includes:

[0067] The first relay energized state maintaining circuit and the second relay energized state maintaining circuit are discharged to prevent the first relay energized state maintaining circuit from energizing the first relay and to prevent the second relay energized state maintaining circuit from energizing the second relay.

[0068] In the above implementation process, the discharge control of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit is timely performed to avoid continuous energization of the relays, thereby improving the use efficiency of the relays, increasing their service life, and avoiding safety hazards.

[0069] Furthermore, before the step of performing charging detection on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively in the non-high-voltage state and then entering the high-voltage state, the method further includes:

[0070] Under the non-high voltage state, the closed states of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are respectively detected to determine whether the energized state maintaining circuits of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are both normal;

[0071] If so, determining the target power mode to be the upper high voltage normal mode;

[0072] If not, abnormal power-on detection is performed on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively to determine the target power mode.

[0073] In the above implementation process, the closed states of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are detected in a non-high voltage state, and the power mode is confirmed after determining that the energization of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are maintained normally, thereby improving the protection of components in the battery management system and effectively avoiding safety hazards.

[0074] If the closure maintaining circuits (or closure state maintaining modules) of the two relays are normal, in response to the driver's operation, the high-voltage process is carried out (i.e., the target power mode is determined to be the high-voltage normal mode), the normal driving mode is entered, and the high-voltage state is entered.

[0075] If only one relay energizing state maintaining module in the two relay energizing state maintaining circuits is abnormal, the system responds to the driver's operation, enters the power-limited driving mode, and enters the high-voltage state.

[0076] If the two relay energizing state maintenance modules are both abnormal, they will report a fault, not respond to the driver's operation, and will not allow high voltage to be applied.

[0077] Furthermore, the step of performing abnormal power detection on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively to determine the target power mode includes:

[0078] Perform abnormal electrification detection on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively, and determine whether there is and only one abnormal electrification in the first relay energized state maintaining circuit and the second relay energized state maintaining circuit;

[0079] If so, determining that the target power mode is an upper high voltage limit power mode;

[0080] If not, report the fault.

[0081] In the above implementation process, abnormal power-on detection is performed on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit, which can quickly and accurately determine whether there is a fault in the first relay energized state maintaining circuit and the second relay energized state maintaining circuit, and is conducive to determining the fault location, providing support for the troubleshooting of abnormal reset circuit faults.

[0082] In the non-high-voltage state, the two relays are tested for closure and maintenance as well as abnormal power-on. When it is determined that the closure and maintenance of the two relays are normal, the high voltage is turned on in response to the driver's operation, and the normal mode is entered. The target power mode is determined to be the high-voltage normal mode, that is, the high voltage is turned on again and operated in the normal mode.

[0083] If one relay is abnormally energized, the corresponding driver operation is to increase the high voltage and enter the limited power mode, and the target power mode is determined to be the high voltage limited power mode, that is, the high voltage is re-enable and the operation is performed in the limited power mode.

[0084] Further, after the step of performing abnormal power detection on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively and determining the target power mode, the method further includes:

[0085] In the target power mode, the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are charged respectively, and at the same time, the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are detected for charging abnormality respectively;

[0086] Determine whether there is a charging abnormality in at least one of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit;

[0087] If so, report the fault;

[0088] If not, obtain test results.

[0089] In the above implementation process, the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are charged and charged and detected under the target power mode, which can detect circuit anomalies in the battery management system under the premise of safety, and is helpful for fault location and troubleshooting.

[0090] When there is a charging abnormality in one relay, the high voltage is lowered in response to the driver's operation, and the two relays are discharged separately.

[0091] Furthermore, the step of performing charging detection on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively in the non-high-voltage state and then entering the high-voltage state comprises:

[0092] In a non-high voltage state, charging detection is performed on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively;

[0093] If the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are both energized and maintained normally, the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are controlled to be closed, and the driving state corresponding to the battery management system is determined to be a high voltage state.

[0094] In the above implementation process, detection is performed under a non-high voltage state, which can improve the accuracy of abnormal reset recovery and enhance safety.

[0095] Furthermore, after the step of charging and detecting the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively in the non-high-voltage state and then entering the high-voltage state, the method further includes:

[0096] Under the high voltage state, the closed states of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are respectively detected to determine whether the energized state maintaining circuits of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are both normal;

[0097] If so, the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are charged respectively, and at the same time, charging abnormality detection is performed on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively;

[0098] If at least one of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit has a charging abnormality, a high voltage is applied and discharge control is performed on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit at the same time to prevent the first relay energized state maintaining circuit from energizing the first relay and to prevent the second relay energized state maintaining circuit from energizing the second relay.

[0099] In the above implementation process, it is ensured that during the abnormal reset and repair process of the battery management system, the components in the battery management system will not be impacted, and can be restored quickly and stably, thereby improving the protection of the battery.

[0100] Under high voltage, the delayed power-off modules of the two relays are charged separately, and key driving information is stored in real time. At the same time, charging abnormalities are detected for the two relays separately.

[0101] If any one of the relays is abnormally charged, the fault will be reported, but it will not affect normal driving. If both relays are charged normally, no action will be taken. At the same time, in the high-voltage state, it will respond to the driver's high-voltage operation at any time and exit the high-voltage state, and control the discharge of the two relays respectively.

[0102] In the embodiment of the present application, when an abnormal reset occurs in the high-voltage driving state, during the abnormal reset recovery period (from the abnormal reset to re-entering the high-voltage driving state), the two relay closure state maintaining module circuits respectively maintain the closure of the two relays to ensure the normal operation of the high-voltage circuit; in the high-voltage state, key information of the battery during driving is obtained, and the key information is the key information for the battery management system to interact with other electronic control units (Electronic Control Unit, ECU), and the key information storage value before the abnormal reset is read and sent to ensure the continuity of the charging and discharging capacity of the battery output (no sudden change), so that the driver will not feel it during the abnormal reset, and because the high-voltage circuit is always connected, it will not cause impact on other capacitive components.

[0103] Embodiment 2

[0104] In order to execute the method corresponding to the above embodiment 1 to achieve the corresponding functions and technical effects, a recovery device for abnormal reset of a vehicle battery management system is provided below, such as Figure 2 As shown, the device comprises:

[0105] A pull-in state detection module 1, used to detect the pull-in state maintaining circuit of the first relay and the pull-in state maintaining circuit of the second relay of the battery management system;

[0106] The abnormal reset detection module 2 is used to determine that the driving state corresponding to the battery management system is a non-high-voltage state if at least one of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit is abnormal, and to perform charging detection on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively in the non-high-voltage state and then enter the high-voltage state;

[0107] The abnormal reset recovery module 3 is used to perform charging detection on the closed states of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively if both the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are energized and maintained normally, and to store key information during the vehicle driving process in real time, and to send the key information storage value before the abnormality during the abnormal reset period to realize the recovery of the abnormal reset of the vehicle battery management system.

[0108] In the above implementation process, the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are charged and detected to ensure that there is no problem with charging, and the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are discharged in time when the high voltage is applied, which does not affect subsequent operations, thereby improving the recovery efficiency of abnormal reset, reducing safety hazards in the abnormal reset recovery process, improving safety performance, and providing guarantee for the normal operation of the battery management system.

[0109] Furthermore, the device also includes a discharge control module, which is used to:

[0110] The first relay energized state maintaining circuit and the second relay energized state maintaining circuit are discharged to prevent the first relay energized state maintaining circuit from energizing the first relay and to prevent the second relay energized state maintaining circuit from energizing the second relay.

[0111] In the above implementation process, the discharge control of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit is timely performed to avoid continuous energization of the relays, thereby improving the use efficiency of the relays, increasing their service life, and avoiding safety hazards.

[0112] Furthermore, the abnormal reset detection module 2 is also used for:

[0113] Under the non-high voltage state, the closed states of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are respectively detected to determine whether the energized state maintaining circuits of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are both normal;

[0114] If so, determining the target power mode to be the upper high voltage normal mode;

[0115] If not, abnormal power-on detection is performed on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively to determine the target power mode.

[0116] In the above implementation process, the closed states of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are detected in a non-high voltage state, and the power mode is confirmed after determining that the energization of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are maintained normally, thereby improving the protection of components in the battery management system and effectively avoiding safety hazards.

[0117] Furthermore, the abnormal reset detection module 2 is also used for:

[0118] Perform abnormal electrification detection on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively, and determine whether there is and only one abnormal electrification in the first relay energized state maintaining circuit and the second relay energized state maintaining circuit;

[0119] If so, determining that the target power mode is an upper high voltage limit power mode;

[0120] If not, report the fault.

[0121] In the above implementation process, abnormal power-on detection is performed on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit, which can quickly and accurately determine whether there is a fault in the first relay energized state maintaining circuit and the second relay energized state maintaining circuit, and is conducive to determining the fault location, providing support for the troubleshooting of abnormal reset circuit faults.

[0122] Furthermore, the abnormal reset detection module 2 is also used for:

[0123] In the target power mode, the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are charged respectively, and at the same time, the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are detected for charging abnormality respectively;

[0124] Determine whether there is a charging abnormality in at least one of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit;

[0125] If so, report the fault;

[0126] If not, obtain test results.

[0127] In the above implementation process, the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are charged and charged and detected under the target power mode, which can detect circuit anomalies in the battery management system under the premise of safety, and is helpful for fault location and troubleshooting.

[0128] Furthermore, the abnormal reset detection module 2 is also used for:

[0129] In a non-high voltage state, charging detection is performed on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively;

[0130] If the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are both energized and maintained normally, the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are controlled to be closed, and the driving state corresponding to the battery management system is determined to be a high voltage state.

[0131] In the above implementation process, detection is performed under a non-high voltage state, which can improve the accuracy of abnormal reset recovery and enhance safety.

[0132] Furthermore, the abnormal reset recovery module 3 is also used for:

[0133] Under the high voltage state, the closed states of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are respectively detected to determine whether the energized state maintaining circuits of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are both normal;

[0134] If so, the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are charged respectively, and at the same time, charging abnormality detection is performed on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively;

[0135] If at least one of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit has a charging abnormality, a high voltage is applied and discharge control is performed on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit at the same time to prevent the first relay energized state maintaining circuit from energizing the first relay and to prevent the second relay energized state maintaining circuit from energizing the second relay.

[0136] In the above implementation process, it is ensured that during the abnormal reset and repair process of the battery management system, the components in the battery management system will not be impacted, and can be restored quickly and stably, thereby improving the protection of the battery.

[0137] The above-mentioned recovery device for abnormal resetting of the vehicle battery management system can implement the method of the above-mentioned embodiment 1. The options in the above-mentioned embodiment 1 are also applicable to this embodiment and will not be described in detail here.

[0138] The rest of the contents of the embodiments of the present application can refer to the contents of the above-mentioned embodiment 1, and will not be repeated in this embodiment.

[0139] Embodiment 3

[0140] An embodiment of the present application provides an electronic device, including a memory and a processor, wherein the memory is used to store a computer program, and the processor runs the computer program to enable the electronic device to execute the recovery method for abnormal resetting of a vehicle battery management system in embodiment 1.

[0141] Optionally, the above-mentioned electronic device may be a server.

[0142] See also Figure 3 , Figure 3 The schematic diagram of the structure of the electronic device provided in the embodiment of the present application. The electronic device may include a processor 31, a communication interface 32, a memory 33 and at least one communication bus 34. The communication bus 34 is used to realize direct connection and communication between these components.

[0143] Optionally, the electronic device may further include a storage controller and an input / output unit. The memory 33, the storage controller, the processor 31, the peripheral interface, and the input / output unit are electrically connected to each other directly or indirectly to achieve data transmission or interaction.

[0144] The input and output unit is used to provide users with the task creation and to create an optional time period or preset execution time for the task to enable interaction between the user and the server. The input and output unit can be, but is not limited to, a mouse and a keyboard.

[0145] Understandably, Figure 3 The structure shown is for illustration only. The electronic device may also include Figure 3 More or fewer components as shown, or with Figure 3 Different configurations are shown. Figure 3 The components shown in the figure can be implemented by hardware, vehicle-mounted software or a combination thereof.

[0146] In addition, an embodiment of the present application further provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the recovery method for abnormal resetting of a vehicle battery management system according to the first embodiment.

[0147] The embodiment of the present application also provides a computer program product, which, when running on a computer, enables the computer to execute the method described in the method embodiment.

[0148] The above description is only an embodiment of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0149] The above is only a specific implementation of the present application, but the protection range of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical range disclosed in the present application, which should be included in the protection range of the present application. Therefore, the protection range of the present application should be based on the protection range of the claims.

Claims

1. A recovery method for abnormal reset of a vehicle battery management system, characterized in that: The method comprises: Detecting a first relay energized state maintaining circuit and a second relay energized state maintaining circuit of the battery management system; If at least one of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit is energized abnormally, determining that the driving state corresponding to the battery management system is a non-high-voltage state, and performing charging detection on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively in the non-high-voltage state, and then entering a high-voltage state; If the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are both energized and maintained normally, charging detection is performed on the closed states of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively, and key information of the vehicle driving process is stored in real time. During the abnormal reset, the key information storage value before the abnormality is sent to realize the recovery of the abnormal reset of the vehicle battery management system.

2. The method for detecting abnormal reset of a vehicle battery management system according to claim 1, characterized in that: After the step of detecting the first relay energized state maintaining circuit and the second relay energized state maintaining circuit of the battery management system, the method further includes: The first relay energized state maintaining circuit and the second relay energized state maintaining circuit are discharged and controlled to prevent the first relay energized state maintaining circuit from energizing the first relay and to prevent the second relay energized state maintaining circuit from energizing the second relay.

3. The vehicle battery management system abnormal reset recovery method according to claim 1, characterized in that: Before the step of performing charging detection on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively in the non-high-voltage state and then entering the high-voltage state, the method further includes: Under the non-high voltage state, the closed states of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are respectively detected to determine whether the energized state maintaining circuits of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are both normal; If so, determining the target power mode to be the upper high voltage normal mode; If not, abnormal power-on detection is performed on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively to determine the target power mode.

4. The vehicle battery management system abnormal reset recovery method according to claim 3, characterized in that: The step of performing abnormal power detection on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively to determine the target power mode comprises: Perform abnormal electrification detection on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively, and determine whether there is and only one abnormal electrification in the first relay energized state maintaining circuit and the second relay energized state maintaining circuit; If so, determining that the target power mode is an upper high voltage limit power mode; If not, report the fault.

5. The vehicle battery management system abnormal reset recovery method according to claim 4, characterized in that: After the step of performing abnormal power detection on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively to determine the target power mode, the method further includes: In the target power mode, the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are charged respectively, and charging abnormality detection is performed on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively; Determining whether at least one of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit has charging abnormality; If yes, report the fault; If not, obtain the test results.

6. The vehicle battery management system abnormal reset recovery method according to claim 1, characterized in that: The step of performing charging detection on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively in the non-high-voltage state and then entering the high-voltage state comprises: Performing charging detection on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively in a non-high voltage state; If the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are both energized and maintained normally, the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are controlled to be closed, and the driving state corresponding to the battery management system is determined to be a high voltage state.

7. The vehicle battery management system abnormal reset recovery method according to claim 6, characterized in that: After the step of performing charging detection on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively in the non-high-voltage state and then entering the high-voltage state, the method further includes: Under the high-voltage state, respectively detecting the closed states of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit to determine whether the energized state maintaining circuits of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are both normal; If so, the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are charged respectively, and at the same time, charging abnormality detection is performed on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively; If at least one of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit has a charging abnormality, a high voltage is applied and discharge control is performed on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit at the same time to prevent the first relay energized state maintaining circuit from energizing the first relay and to prevent the second relay energized state maintaining circuit from energizing the second relay.

8. A recovery device for abnormal resetting of a vehicle battery management system, characterized in that: The device comprises: A pull-in state detection module, used for detecting a first relay pull-in state maintaining circuit and a second relay pull-in state maintaining circuit of the battery management system; an abnormal reset detection module, for determining that the driving state corresponding to the battery management system is a non-high-voltage state if at least one of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit is abnormal, and performing charging detection on the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively in the non-high-voltage state and then entering a high-voltage state; The abnormal reset recovery module is used to perform charging detection on the closed states of the first relay energized state maintaining circuit and the second relay energized state maintaining circuit respectively if both the first relay energized state maintaining circuit and the second relay energized state maintaining circuit are energized and maintained normally, and to store key information during vehicle driving in real time, and to send the key information storage value before the abnormality during the abnormal reset period to realize the recovery of the abnormal reset of the vehicle battery management system.

9. An electronic device, characterized in that: It includes a memory and a processor, the memory is used to store a computer program, and the processor runs the computer program to enable the electronic device to execute the recovery method for abnormal resetting of a vehicle battery management system according to any one of claims 1 to 7.

10. A storage medium, characterized in that: It stores a computer program, which, when executed by a processor, implements the recovery method for abnormal resetting of a vehicle battery management system as described in any one of claims 1 to 7.

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