A method and device for recovering from an abnormal reset of a vehicle battery management system

Abstract

The application provides a recovery method and device for abnormal reset of a vehicle battery management system, electronic equipment and a storage medium, wherein the method comprises: detecting a first relay attraction state maintenance circuit and a second relay attraction state maintenance circuit; at least one of the first relay attraction state maintenance circuit and the second relay attraction state maintenance circuit is abnormal in attraction maintenance, and the first relay attraction state maintenance circuit and the second relay attraction state maintenance circuit are charged and detected in a non-high-voltage state; the first relay attraction state maintenance circuit and the second relay attraction state maintenance circuit are normal in attraction maintenance, the closing state of the first relay attraction state maintenance circuit and the second relay attraction state maintenance circuit is charged and detected, and the recovery of the abnormal reset of the vehicle battery management system is realized. By implementing the application, the abnormal reset of the battery management system can be quickly recovered, the efficiency is improved, the safety hidden danger is reduced, and the performance is improved.

Description

Technical Field

[0001] This application relates to the field of battery control technology, and more specifically, to a method, apparatus, electronic device, and storage medium for recovering from an abnormal reset of a vehicle battery management system. Background Technology

[0002] As vehicle systems become increasingly complex, the probability of malfunctions also increases. When a vehicle is operating normally, if the battery management system (BMS) experiences an abnormal reset, it can cause the high-voltage circuit between the power battery and other high-voltage components to disconnect, resulting in a sudden loss of power and deceleration of the vehicle. If this occurs at high speeds, it can seriously threaten the lives and property of the occupants, posing a significant safety risk.

[0003] In existing technologies, there are two main solutions for scenarios where the battery management system experiences abnormal resets during driving conditions: one is to record relevant information at the time of the abnormal reset for post-event analysis. This approach does not consider restoring the vehicle's power after an abnormal reset, and the risk still exists. The other is to store key vehicle operating information at the moment of the abnormal reset for quick restoration of the vehicle's driving state after the abnormal reset. However, this approach ignores the fact that the vehicle is still in a state of temporary power loss during the abnormal reset. Quickly closing the relay after an abnormal reset can cause high-voltage surges to other capacitive components, affecting their lifespan or causing them to break down, 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 from abnormal resets of a vehicle battery management system. This method can quickly recover from abnormal resets of the battery management system, improve efficiency, reduce safety hazards during the recovery process, enhance safety performance, and ensure the normal operation of the battery management system.

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

[0006] The first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit of the battery management system are tested.

[0007] If at least one of the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit is abnormal, the driving state corresponding to the battery management system is determined to be a non-high voltage state. In the non-high voltage state, charging detection is performed on the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively before entering the high voltage state.

[0008] If both the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit are engaged and maintained normally, charging detection is performed on the closing state of the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively, and key information during vehicle driving is stored in real time. During abnormal reset, the stored key information 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, charging detection is performed on the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit to ensure that there are no problems with charging. When the high voltage is applied, the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit are discharged in a timely manner without affecting subsequent operations. This can improve the recovery efficiency of abnormal reset, reduce the safety hazards in the abnormal reset recovery process, improve safety performance, and provide a guarantee for the normal operation of the battery management system.

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

[0011] Discharge control is applied to the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit to prevent the first relay engagement state maintenance circuit from engaging the first relay and to prevent the second relay engagement state maintenance circuit from engaging the second relay.

[0012] In the above implementation process, timely discharge control is performed on the first relay energizing circuit and the second relay energizing circuit to prevent the relay from being continuously energized, which can improve the efficiency of the relay, extend its service life, and avoid safety hazards.

[0013] Furthermore, before the step of performing charging detection on the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively under non-high voltage conditions and then entering the high voltage state, the method further includes:

[0014] Under non-high voltage conditions, the closing states of the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit are detected respectively to determine whether the engagement maintenance of the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit is normal.

[0015] If so, confirm that the target power mode is the high-voltage normal mode;

[0016] If not, perform abnormal power detection on the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively to determine the target power mode.

[0017] In the above implementation process, the closing state of the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit is detected under non-high voltage conditions. After confirming that the engagement state maintenance circuits of the first and second relays are normal, the power mode is then confirmed, which improves the protection of components in the battery management system and effectively avoids safety hazards.

[0018] Further, the step of performing abnormal energization detection on the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively, and determining the target power mode, includes:

[0019] Abnormal energization detection is performed on the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively to determine whether there is one and only one abnormal energization in the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit.

[0020] If so, determine that the target power mode is the high-voltage power limiting mode;

[0021] If not, report the fault.

[0022] In the above implementation process, abnormal energization detection of the first relay energizing state maintenance circuit and the second relay energizing state maintenance circuit can quickly and accurately determine whether there is a fault in the first relay energizing state maintenance circuit and the second relay energizing state maintenance circuit, and is conducive to determining the fault location, providing support for troubleshooting abnormal reset circuit faults.

[0023] Furthermore, after the step of performing abnormal energization detection on the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively to determine the target power mode, the method further includes:

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

[0025] Determine whether there is a charging abnormality in at least one of the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit;

[0026] If so, report the fault.

[0027] If not, obtain the test results.

[0028] In the above implementation process, charging and charging detection are performed on the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit in the target power mode. This can detect circuit abnormalities in the battery management system under safe conditions, which helps in fault location and troubleshooting.

[0029] Further, the step of performing charging detection on the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively under non-high voltage conditions before entering the high voltage state includes:

[0030] Under non-high voltage conditions, charging detection is performed on the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit, respectively.

[0031] If both the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit are engaged and maintained normally, the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit are controlled to close, and the driving state corresponding to the battery management system is determined to be a high-voltage state.

[0032] In the above implementation process, conducting the test under non-high voltage conditions can improve the accuracy of abnormal reset and recovery, and enhance safety.

[0033] Furthermore, after the step of performing charging detection on the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively in the non-high voltage state and then entering the high voltage state, the method further includes:

[0034] Under the high voltage condition, the closing state of the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit are detected respectively to determine whether the engagement maintenance of the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit is normal.

[0035] If so, charge the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively, and at the same time, detect charging abnormalities in the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively.

[0036] If at least one of the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit has a charging abnormality, a high voltage is applied to both the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit to discharge control, so as to prevent the first relay engagement state maintenance circuit from engaging the first relay and the second relay engagement state maintenance circuit from engaging the second relay.

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

[0038] Secondly, embodiments of this application also provide a recovery device for an abnormal reset of a vehicle battery management system, the device comprising:

[0039] The engagement state detection module is used to detect the engagement state maintenance circuit of the first relay and the engagement state maintenance circuit of the battery management system.

[0040] An abnormal reset detection module 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 engagement state maintenance circuit and the second relay engagement state maintenance circuit is abnormal. In the non-high voltage state, the module performs charging detection on the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively before entering the high voltage state.

[0041] The abnormal reset recovery module is used to perform charging detection on the closing state of the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively if both are engaged and maintained normally, and to store key information during vehicle driving in real time. During the abnormal reset, the module sends the stored key information value before the abnormality, thereby realizing the recovery of the abnormal reset of the vehicle battery management system.

[0042] In the above implementation process, charging detection is performed on the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit to ensure that there are no problems with charging. When the high voltage is applied, the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit are discharged in a timely manner without affecting subsequent operations. This can improve the recovery efficiency of abnormal reset, reduce the safety hazards in the abnormal reset recovery process, improve safety performance, and provide a guarantee for the normal operation of the battery management system.

[0043] Thirdly, an electronic device provided in this application includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the method as described in any of the first aspects.

[0044] Fourthly, embodiments of this application provide a computer-readable storage medium storing instructions that, when executed on a computer, cause the computer to perform the method described in any of the first aspects.

[0045] Other features and advantages of this disclosure will be set forth in the following description, or some features and advantages may be inferred from the description or determined without doubt, or may be learned by practicing the techniques described above.

[0046] It can be implemented in accordance with the contents of the specification. The preferred embodiments of this application are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0047] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation on the range. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0048] Figure 1 A flowchart illustrating a recovery method for an abnormal reset of a vehicle battery management system is provided for embodiments of this application.

[0049] Figure 2 A schematic diagram of the structure of a recovery device for abnormal reset of a vehicle battery management system is provided for embodiments of this application.

[0050] Figure 3 This is a schematic diagram of the structural composition of the electronic device provided in the embodiments of this application. Detailed Implementation

[0051] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0052] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0053] The specific embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but are not intended to limit the scope of this application.

[0054] Example 1

[0055] Figure 1 This is a flowchart illustrating the recovery method for an abnormal reset of the vehicle battery management system provided in this application embodiment. Figure 1 As shown, the method includes:

[0056] S1, detect the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit of the battery management system.

[0057] S2, if at least one of the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit is abnormal, the driving state corresponding to the battery management system is determined to be a non-high voltage state. In the non-high voltage state, the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit are charged and then the system enters the high voltage state.

[0058] S3, if both the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit are engaged and maintained normally, the closing state of the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit are respectively charged and the key information during vehicle driving is stored in real time. During the abnormal reset, the key information stored 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, charging detection is performed on the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit to ensure that there are no problems with charging. When the high voltage is applied, the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit are discharged in a timely manner without affecting subsequent operations. This can improve the recovery efficiency of abnormal reset, reduce the safety hazards in the abnormal reset recovery process, improve safety performance, and provide a guarantee for the normal operation of the battery management system.

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

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

[0062] In S1, when the vehicle's battery management system is first woken up, it will first determine whether it is an abnormal reset during the initialization phase. If not, it will proceed with the normal power-on process. At this time, the battery management system enters a non-high voltage state and detects the closing state of the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively to determine whether their engagement maintenance is normal. That is, the engagement state maintenance module circuit is discharged and abnormal charging detection is performed.

[0063] After an abnormal reset occurs, the battery management system is reinitialized and enters the abnormal reset recovery process. The closed state of the main positive relay and the main negative relay is checked to determine whether the engagement and maintenance of the two relays are normal.

[0064] If any relay fails to maintain its engagement, the system enters a non-high voltage state to avoid the risk of capacitive components being damaged by a sudden closure after the relay has opened.

[0065] If both relays are engaged and maintain normal operation, a drive command is issued to close the main positive relay and the main negative relay, thus entering a high-voltage state.

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

[0067] Discharge control is applied to the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit to prevent the first relay engagement state maintenance circuit from engaging the first relay and to prevent the second relay engagement state maintenance circuit from engaging the second relay.

[0068] In the above implementation process, timely discharge control is performed on the first relay energizing circuit and the second relay energizing circuit to prevent the relay from being continuously energized, which can improve the efficiency of the relay, extend its service life, and avoid safety hazards.

[0069] Furthermore, before the step of performing charging detection on the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively in the non-high voltage state and then entering the high voltage state, the following steps are also included:

[0070] Under non-high voltage conditions, the closing state of the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit are detected respectively to determine whether the engagement maintenance of the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit is normal.

[0071] If so, confirm that the target power mode is the high-voltage normal mode;

[0072] If not, perform abnormal energization detection on the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively to determine the target power mode.

[0073] In the above implementation process, the closing state of the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit is detected under non-high voltage conditions. After confirming that the engagement state maintenance circuits of the first and second relays are normal, the power mode is then confirmed, which improves the protection of components in the battery management system and effectively avoids safety hazards.

[0074] If the engagement and holding circuits (or engagement state holding modules) of both relays are normal, the system responds to the driver's operation, performs the high-voltage process (i.e., determines the target power mode as the high-voltage normal mode), enters the normal driving mode, and enters the high-voltage state.

[0075] If only one of the two relay engagement state maintenance modules malfunctions, it will respond to the driver's operation, enter the power-limited driving mode, and enter the high-voltage state.

[0076] If both relay engagement state maintenance modules malfunction, a fault will be reported, driver operations will not be responded to, and high voltage will not be allowed.

[0077] Further, the steps of performing abnormal energization detection on the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively, and determining the target power mode, include:

[0078] Abnormal energization detection is performed on the first relay energization state maintenance circuit and the second relay energization state maintenance circuit respectively to determine whether there is one and only one abnormal energization in the first relay energization state maintenance circuit and the second relay energization state maintenance circuit.

[0079] If so, determine the target power mode as the upper high voltage power limiting mode;

[0080] If not, report the fault.

[0081] In the above implementation process, abnormal energization detection of the first relay energizing state maintenance circuit and the second relay energizing state maintenance circuit can quickly and accurately determine whether there is a fault in the first relay energizing state maintenance circuit and the second relay energizing state maintenance circuit, and is conducive to determining the fault location, providing support for troubleshooting abnormal reset circuit faults.

[0082] Under non-high voltage conditions, the two relays are tested for engagement and maintenance, as well as for abnormal energization. If the engagement and maintenance of the two relays are confirmed to be normal, the high voltage is applied 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 reapplied and the operation is carried out in the normal mode.

[0083] If a relay is found to be abnormally energized, the driver will operate to apply high voltage and enter the power limiting mode. The target power mode is determined to be the high voltage power limiting mode, that is, the high voltage is reapplied and the operation is performed in the power limiting mode.

[0084] Furthermore, after performing abnormal energization detection on the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively to determine the target power mode, the method further includes:

[0085] In the target power mode, the first relay energizing circuit and the second relay energizing circuit are charged respectively, and charging abnormality detection is performed on the first relay energizing circuit and the second relay energizing circuit respectively.

[0086] Determine whether there is a charging abnormality in at least one of the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit.

[0087] If so, report the fault.

[0088] If not, obtain the test results.

[0089] In the above implementation process, charging and charging detection are performed on the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit in the target power mode. This can detect circuit abnormalities in the battery management system under safe conditions, which helps in fault location and troubleshooting.

[0090] When a relay is found to be charging abnormally, the high voltage is applied in response to the driver's operation, and both relays are discharged respectively.

[0091] Furthermore, the step of performing charging detection on the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively under non-high voltage conditions before entering the high voltage state includes:

[0092] Under non-high voltage conditions, charging detection is performed on the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively.

[0093] If both the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit are engaged and maintained normally, the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit are controlled to close, and the driving state corresponding to the battery management system is determined to be a high-voltage state.

[0094] In the above implementation process, conducting the test under non-high voltage conditions can improve the accuracy of abnormal reset and recovery, and enhance safety.

[0095] Furthermore, after the step of performing charging detection on the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively in the non-high voltage state and then entering the high voltage state, the method further includes:

[0096] Under high voltage conditions, the closing states of the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit are detected respectively to determine whether the engagement maintenance of the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit is normal.

[0097] If so, charge the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively, and at the same time, detect charging abnormalities in the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively.

[0098] If at least one of the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit has a charging abnormality, a high voltage is applied to both the first and second relay engagement state maintenance circuits to control discharge, in order to prevent the first relay engagement state maintenance circuit from engaging the first relay and the second relay engagement state maintenance circuit from engaging the second relay.

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

[0100] Under high voltage conditions, the delayed power-off modules of the two relays are charged respectively, and key driving information is stored in real time. At the same time, abnormal charging detection is performed on the two relays respectively.

[0101] If any relay is found to be charging abnormally, a fault will be reported, but normal driving will not be affected. If both relays are charging normally, no action will be taken. Simultaneously, under high-voltage conditions, the system will respond to the driver's actions to de-energize and exit the high-voltage state, and will discharge both relays accordingly.

[0102] In this embodiment, if an abnormal reset occurs during high-voltage driving, the recovery period (from the occurrence of the abnormal reset to re-entering the high-voltage driving state) is maintained by two relay engagement module circuits to ensure the normal operation of the high-voltage circuit. During high-voltage driving, key battery information is obtained and stored, including crucial information from interactions between the battery management system and other electronic control units (ECUs). Simultaneously, the stored key information values ​​from before the abnormal reset are read and transmitted to ensure the continuity (non-abrupt) of the battery's charging and discharging capabilities. This ensures the driver is unaware of the abnormal reset, and because the high-voltage circuit remains connected, it does not impact other capacitive components.

[0103] Example 2

[0104] To execute the method corresponding to Embodiment 1 above and achieve the corresponding functional 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 includes:

[0105] The engagement state detection module 1 is used to detect the engagement state maintenance circuit of the first relay and the engagement state maintenance circuit 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 engagement state maintenance circuit and the second relay engagement state maintenance circuit is abnormal. In the non-high voltage state, the module performs charging detection on the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively and then enters the high voltage state.

[0107] The abnormal reset recovery module 3 is used to perform charging detection on the closing state of the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively if both are engaged and maintained normally, and to store key information during vehicle driving in real time. During the abnormal reset, it sends the stored key information value before the abnormality, thereby realizing the recovery of the abnormal reset of the vehicle battery management system.

[0108] In the above implementation process, charging detection is performed on the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit to ensure that there are no problems with charging. When the high voltage is applied, the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit are discharged in a timely manner without affecting subsequent operations. This can improve the recovery efficiency of abnormal reset, reduce the safety hazards in the abnormal reset recovery process, improve safety performance, and provide a guarantee for the normal operation of the battery management system.

[0109] Furthermore, the device also includes a discharge control module for:

[0110] Discharge control is applied to the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit to prevent the first relay engagement state maintenance circuit from engaging the first relay and to prevent the second relay engagement state maintenance circuit from engaging the second relay.

[0111] In the above implementation process, timely discharge control is performed on the first relay energizing circuit and the second relay energizing circuit to prevent the relay from being continuously energized, which can improve the efficiency of the relay, extend its service life, and avoid safety hazards.

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

[0113] Under non-high voltage conditions, the closing state of the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit are detected respectively to determine whether the engagement maintenance of the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit is normal.

[0114] If so, confirm that the target power mode is the high-voltage normal mode;

[0115] If not, perform abnormal energization detection on the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively to determine the target power mode.

[0116] In the above implementation process, the closing state of the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit is detected under non-high voltage conditions. After confirming that the engagement state maintenance circuits of the first and second relays are normal, the power mode is then confirmed, which improves the protection of components in the battery management system and effectively avoids safety hazards.

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

[0118] Abnormal energization detection is performed on the first relay energization state maintenance circuit and the second relay energization state maintenance circuit respectively to determine whether there is one and only one abnormal energization in the first relay energization state maintenance circuit and the second relay energization state maintenance circuit.

[0119] If so, determine the target power mode as the upper high voltage power limiting mode;

[0120] If not, report the fault.

[0121] In the above implementation process, abnormal energization detection of the first relay energizing state maintenance circuit and the second relay energizing state maintenance circuit can quickly and accurately determine whether there is a fault in the first relay energizing state maintenance circuit and the second relay energizing state maintenance circuit, and is conducive to determining the fault location, providing support for troubleshooting 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 energizing circuit and the second relay energizing circuit are charged respectively, and charging abnormality detection is performed on the first relay energizing circuit and the second relay energizing circuit respectively.

[0124] Determine whether there is a charging abnormality in at least one of the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit.

[0125] If so, report the fault.

[0126] If not, obtain the test results.

[0127] In the above implementation process, charging and charging detection are performed on the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit in the target power mode. This can detect circuit abnormalities in the battery management system under safe conditions, which helps in fault location and troubleshooting.

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

[0129] Under non-high voltage conditions, charging detection is performed on the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively.

[0130] If both the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit are engaged and maintained normally, the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit are controlled to close, and the driving state corresponding to the battery management system is determined to be a high-voltage state.

[0131] In the above implementation process, conducting the test under non-high voltage conditions can improve the accuracy of abnormal reset and recovery, and enhance safety.

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

[0133] Under high voltage conditions, the closing states of the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit are detected respectively to determine whether the engagement maintenance of the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit is normal.

[0134] If so, charge the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively, and at the same time, detect charging abnormalities in the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively.

[0135] If at least one of the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit has a charging abnormality, a high voltage is applied to both the first and second relay engagement state maintenance circuits to control discharge, in order to prevent the first relay engagement state maintenance circuit from engaging the first relay and the second relay engagement state maintenance circuit from engaging the second relay.

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

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

[0138] The remaining contents of this embodiment can be referred to the contents of Embodiment 1 above, and will not be repeated in this embodiment.

[0139] Example 3

[0140] This application provides an electronic device, including a memory and a processor. The memory stores a computer program, and the processor runs the computer program to enable the electronic device to perform the recovery method for abnormal reset of the vehicle battery management system according to Embodiment 1.

[0141] Alternatively, the aforementioned electronic device may be a server.

[0142] Please see Figure 3 , Figure 3 This is a schematic diagram illustrating the structural composition of an electronic device provided in an embodiment of this 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 enable direct communication between these components.

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

[0144] Input / output units are used to enable users to create tasks and set optional start periods or preset execution times for those tasks, facilitating user-server interaction. Input / output units can be, but are not limited to, a mouse and keyboard.

[0145] Understandable. Figure 3 The structure shown is for illustrative purposes only; the electronic device may also include components that are more advanced than those shown. Figure 3 The more or fewer components shown, or having the same Figure 3 The different configurations shown. Figure 3 The components shown can be implemented using hardware, in-vehicle software, or a combination thereof.

[0146] In addition, this application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the recovery method for abnormal reset of the vehicle battery management system in Embodiment 1.

[0147] This application also provides a computer program product that, when run on a computer, causes the computer to perform the method described in the method embodiment.

[0148] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0149] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of protection of the claims.

Claims

1. A method for recovering from an abnormal reset of a vehicle battery management system, characterized in that, The method includes: The first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit of the battery management system are tested. If at least one of the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit is abnormal, the driving state corresponding to the battery management system is determined to be a non-high voltage state. In the non-high voltage state, charging detection is performed on the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively before entering the high voltage state. If both the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit are engaged and maintained normally, charging detection is performed on the closing state of the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively, and key information during vehicle driving is stored in real time. During abnormal reset, the stored key information value before the abnormality is sent to realize the recovery of the abnormal reset of the vehicle battery management system. Before the step of performing charging detection on the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively under non-high voltage conditions and then entering the high voltage state, the method further includes: Under non-high voltage conditions, the closing states of the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit are detected respectively to determine whether the engagement maintenance of the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit is normal. If so, confirm that the target power mode is the high-voltage normal mode; If not, perform abnormal power detection on the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively to determine the target power mode. The step of performing abnormal energization detection on the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively, and determining the target power mode, includes: Abnormal energization detection is performed on the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively to determine whether there is one and only one abnormal energization in the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit. If so, determine that the target power mode is the high-voltage power limiting mode; If not, report the fault. The step of performing charging detection on the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively under non-high voltage conditions before entering the high voltage state includes: Under non-high voltage conditions, charging detection is performed on the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit, respectively. If both the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit are engaged and maintained normally, the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit are controlled to close, and the driving state corresponding to the battery management system is determined to be a high voltage state. After the step of performing charging detection on the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively under non-high voltage conditions and then entering the high voltage state, the method further includes: Under the high voltage condition, the closing state of the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit are detected respectively to determine whether the engagement maintenance of the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit is normal. If so, charge the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively, and at the same time, detect charging abnormalities in the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively. If at least one of the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit has a charging abnormality, a high voltage is applied to both the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit to discharge control, so as to prevent the first relay engagement state maintenance circuit from engaging the first relay and the second relay engagement state maintenance circuit from engaging the second relay.

2. The recovery method for abnormal reset of the vehicle battery management system according to claim 1, characterized in that, After the step of detecting the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit of the battery management system, the method further includes: Discharge control is applied to the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit to prevent the first relay engagement state maintenance circuit from engaging the first relay and to prevent the second relay engagement state maintenance circuit from engaging the second relay.

3. The recovery method for abnormal reset of the vehicle battery management system according to claim 1, characterized in that, After the step of performing abnormal energization detection on the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively to determine the target power mode, the method further includes: In the target power mode, the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit are charged respectively, and charging abnormality detection is performed on the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively. Determine whether there is a charging abnormality in at least one of the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit; If so, report the fault; If not, obtain the test results.

4. A recovery device for abnormal reset of a vehicle battery management system, characterized in that, The device includes: The engagement state detection module is used to detect the engagement state maintenance circuit of the first relay and the engagement state maintenance circuit of the battery management system. An abnormal reset detection module 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 engagement state maintenance circuit and the second relay engagement state maintenance circuit is abnormal. In the non-high voltage state, the module performs charging detection on the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively before entering the high voltage state. The abnormal reset recovery module is used to perform charging detection on the closing state of the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively if both the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit are engaged and maintained normally, and to store key information during vehicle driving in real time. During the abnormal reset, the key information stored before the abnormality is sent to realize the recovery of the abnormal reset of the vehicle battery management system. The abnormal reset recovery module is also used for: Under non-high voltage conditions, the closing states of the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit are detected respectively to determine whether the engagement maintenance of the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit is normal. If so, confirm that the target power mode is the high-voltage normal mode; If not, perform abnormal power detection on the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively to determine the target power mode. Abnormal energization detection is performed on the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively to determine whether there is one and only one abnormal energization in the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit. If so, determine that the target power mode is the high-voltage power limiting mode; If not, report the fault. Under non-high voltage conditions, charging detection is performed on the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit, respectively. If both the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit are engaged and maintained normally, the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit are controlled to close, and the driving state corresponding to the battery management system is determined to be a high voltage state. Under the high voltage condition, the closing state of the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit are detected respectively to determine whether the engagement maintenance of the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit is normal. If so, charge the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively, and at the same time, detect charging abnormalities in the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit respectively. If at least one of the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit has a charging abnormality, a high voltage is applied to both the first relay engagement state maintenance circuit and the second relay engagement state maintenance circuit to discharge control, so as to prevent the first relay engagement state maintenance circuit from engaging the first relay and the second relay engagement state maintenance circuit from engaging the second relay.

5. An electronic device, characterized in that, The device includes a memory and a processor, the memory being used to store a computer program, and the processor running the computer program to cause the electronic device to perform the recovery method for abnormal reset of the vehicle battery management system according to any one of claims 1 to 3.

6. A storage medium, characterized in that, It stores a computer program that, when executed by a processor, implements the recovery method for abnormal reset of the vehicle battery management system as described in any one of claims 1 to 3.

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