A collision processing method, control module, device and vehicle for a vehicle battery

Abstract

The application provides a collision processing method, a control module, an apparatus and a vehicle for a vehicle battery. When receiving an elastic wave signal collected by any elastic wave detection module, it is determined that the vehicle battery has been collided. Based on the elastic wave signal collected by each elastic wave detection module and a preset elastic wave analysis model, elastic wave information generated in the vehicle battery due to the collision is determined. The insulation resistance of the vehicle battery pack is obtained. If the insulation resistance is less than a preset minimum insulation resistance threshold, it is determined that the vehicle battery insulation has failed. According to the elastic wave amplitude in the elastic wave information and a preset maximum elastic wave amplitude threshold, a fault battery module corresponding to a target elastic wave detection module is determined. A control signal is generated to control a target cutting module to cut off the corresponding high-voltage copper bar. By determining the fault battery module in the battery pack through the elastic wave and cutting off the connection between the fault battery module and other battery modules, the short-circuiting and fire caused by insulation failure is avoided, and the safety of the vehicle battery is improved.

Description

Technical Field

[0001] The present application relates to the field of automotive electronics technology, and in particular to a vehicle battery collision handling method, control module, device, and vehicle. Background Art

[0002] With the increasing popularity of new energy vehicles, accidents caused by underbody collisions are on the rise. Vehicle batteries are typically located at the very bottom of the chassis. Potholes, rocks, or other obstacles on the road, or descending stairs during driving can cause the underbody to collide, leading to accidents.

[0003] The existing collision handling method for vehicle batteries is to cut off the power supply to the positive and negative poles of the entire battery pack after detecting that the vehicle battery insulation fails due to collision. However, the internal battery pack may still short-circuit and catch fire due to insulation failure, causing a fire accident, and the safety of the vehicle battery is relatively low. Summary of the Invention

[0004] In view of this, the embodiments of the present application at least provide a collision handling method, control module, device and vehicle for a vehicle battery, which uses elastic waves to determine the faulty battery module in the battery pack and cut off its connection with other battery modules, thereby avoiding short circuit and fire due to insulation failure and improving the safety of the vehicle battery.

[0005] This application mainly includes the following aspects:

[0006] In a first aspect, an embodiment of the present application provides a collision processing method for a vehicle battery, which is applied to a control module of a collision processing device for a vehicle battery, wherein the collision processing device further comprises a vehicle battery pack, a plurality of elastic wave detection modules, and a plurality of cut-off modules; the vehicle battery pack comprises at least two battery modules, each of which is connected in series via a high-voltage copper busbar, each of which corresponds to at least one elastic wave detection module, and each of which corresponds to one cut-off module; any of the elastic wave detection modules is mounted at the bottom of the corresponding battery module; any of the cut-off modules is mounted on the corresponding high-voltage copper busbar; each of the elastic wave detection modules and the cut-off modules is electrically connected to the control module via a low-voltage wiring harness; the method comprises:

[0007] When receiving an elastic wave signal collected by any of the elastic wave detection modules, determining that a collision has occurred with the vehicle battery;

[0008] Determining elastic wave information generated in the vehicle battery by the collision based on the elastic wave signals collected by each of the elastic wave detection modules and a preset elastic wave analysis model; wherein the elastic wave information includes the elastic wave amplitude of the elastic wave at the location of each of the elastic wave detection modules;

[0009] Obtaining the insulation resistance of the vehicle battery pack; if the insulation resistance is less than a preset minimum insulation resistance threshold, determining that the vehicle battery insulation has failed;

[0010] Determining a target elastic wave detection module based on each of the elastic wave amplitudes and a preset maximum elastic wave amplitude threshold; and determining the battery module corresponding to the target elastic wave detection module as a faulty battery module; the target elastic wave detection module is an elastic wave detection module whose elastic wave amplitude is greater than the preset maximum elastic wave amplitude threshold;

[0011] A control signal is generated to control a target cutting module to cut off the corresponding high-voltage copper busbar; the target cutting module is a cutting module on the high-voltage copper busbar connected to the faulty battery module.

[0012] In a second aspect, an embodiment of the present application further provides a control module for a collision handling device for a vehicle battery, wherein the collision handling device further comprises a vehicle battery pack, a plurality of elastic wave detection modules, and a plurality of cut-off modules; the vehicle battery pack comprises at least two battery modules, each of which is connected in series via a high-voltage copper busbar, each of which corresponds to at least one elastic wave detection module, and each of which corresponds to one cut-off module; any of the elastic wave detection modules is mounted at the bottom of the corresponding battery module; any of the cut-off modules is mounted on the corresponding high-voltage copper busbar; each of the elastic wave detection modules and the cut-off modules is electrically connected to the control module via a low-voltage wiring harness; the control module comprises:

[0013] a first determining unit, configured to determine that a collision has occurred with the vehicle battery upon receiving an elastic wave signal collected by any of the elastic wave detection modules;

[0014] a second determining unit, configured to determine elastic wave information generated in the vehicle battery by the collision based on the elastic wave signals collected by each of the elastic wave detection modules and a preset elastic wave analysis model; wherein the elastic wave information includes elastic wave amplitudes of the elastic waves at the locations of each of the elastic wave detection modules;

[0015] a third determining unit, configured to obtain an insulation resistance of the vehicle battery pack; and determine that the vehicle battery insulation has failed if the insulation resistance is less than a preset minimum insulation resistance threshold;

[0016] a fourth determining unit, configured to determine a target elastic wave detection module based on each of the elastic wave amplitudes and a preset maximum elastic wave amplitude threshold; and determine the battery module corresponding to the target elastic wave detection module as a faulty battery module; the target elastic wave detection module is an elastic wave detection module having an elastic wave amplitude greater than the preset maximum elastic wave amplitude threshold;

[0017] The execution unit is configured to generate a control signal to control a target cutting module to cut a corresponding high-voltage copper bar; the target cutting module is a cutting module on the high-voltage copper bar connected with the faulty battery module.

[0018] In a third aspect, the embodiments of the present application further provide a collision processing device of a vehicle battery, which comprises a vehicle battery pack, a plurality of elastic wave detection modules, a plurality of cutting modules and the control module as described above; the vehicle battery pack comprises at least two battery modules, each of the battery modules is connected in series through a high-voltage copper bar, each of the battery modules corresponds to at least one of the elastic wave detection modules, and each of the high-voltage copper bars corresponds to one of the cutting modules; any of the elastic wave detection modules is installed at the bottom of the corresponding battery module; any of the cutting modules is installed on the corresponding high-voltage copper bar; each of the elastic wave detection modules and the cutting module is electrically connected to the control module through a low-voltage wire harness.

[0019] In a fourth aspect, the embodiments of the present application further provide a vehicle comprising the collision processing device of a vehicle battery as described above.

[0020] The embodiment of the present application provides a collision processing method, control module, device and vehicle for a vehicle battery, wherein the collision processing method is applied to the control module of the collision processing device of the vehicle battery, and the collision processing device also includes a vehicle battery pack, multiple elastic wave detection modules and multiple cut-off modules; the vehicle battery pack includes at least two battery modules, each battery module is connected in series through a high-voltage copper bus, each battery module corresponds to at least one elastic wave detection module, and each high-voltage copper bus corresponds to a cut-off module; any elastic wave detection module is installed at the bottom of the corresponding battery module; any cut-off module is installed on the corresponding high-voltage copper bus; each elastic wave detection module and the cut-off module are respectively electrically connected to the control module through a low-voltage wiring harness; the collision processing method includes: when an elastic wave signal collected by any elastic wave detection module is received, it is determined that the vehicle battery has collided Based on the elastic wave signals collected by each elastic wave detection module and the preset elastic wave analysis model, the elastic wave information generated in the vehicle battery by the collision is determined; wherein, the elastic wave information includes the elastic wave amplitude of the elastic wave at the position of each elastic wave detection module; the insulation resistance of the vehicle battery pack is obtained; if the insulation resistance is less than the preset minimum insulation resistance threshold, the vehicle battery insulation failure is determined; according to each elastic wave amplitude and the preset maximum elastic wave amplitude threshold, the target elastic wave detection module is determined; and the battery module corresponding to the target elastic wave detection module is determined as the faulty battery module; the target elastic wave detection module is the elastic wave detection module whose elastic wave amplitude is greater than the preset maximum elastic wave amplitude threshold; a control signal is generated to control the target cut-off module to cut off the corresponding high-voltage copper bus; the target cut-off module is the cut-off module on the high-voltage copper bus connected to the faulty battery module. In this way, the faulty battery module in the battery pack is determined by the elastic wave and its connection with other battery modules is cut off, thereby avoiding short circuit and fire due to insulation failure and improving the safety of the vehicle battery.

[0021] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. 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 scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 A schematic structural diagram of a vehicle battery collision handling device provided in an embodiment of the present application is shown;

[0024] Figure 2 A flowchart of a vehicle battery collision processing method provided by an embodiment of the present application is shown;

[0025] Figure 3 Figure 1 shows a functional block diagram of a control module according to an embodiment of the present application;

[0026] Figure 4 Figure 2 shows another functional block diagram of a control module according to an embodiment of the present application;

[0027] Figure 5 Figure 3 shows a structural schematic diagram of an electronic device according to an embodiment of the present application.

[0028] Main component symbol explanation:

[0029] In the figure: 100 - collision processing device; 101 - vehicle battery pack; 102 - battery module; 103 - elastic wave detection module; 104 - cutting module; 105 - control module; 1051 - first determination unit; 1052 - second determination unit; 1053 - third determination unit; 1054 - fourth determination unit; 1055 - execution unit; 1056 - second execution unit; 1057 - fifth determination unit; 1058 - sixth determination unit; 1059 - third execution unit; 10510 - seventh determination unit; 500 - electronic device; 510 - processor; 520 - memory; 530 - bus. DETAILED DESCRIPTION

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described below in connection with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0031] The embodiments of the present application will be described in detail below in connection with Figure 1 The implementation of the embodiments of the present application will be described in detail; the collision processing method for a vehicle battery provided by the embodiments of the present application is applied to the control module of a collision processing device for a vehicle battery.

[0032] Please refer to Figure 1 , Figure 1 Figure 1 shows a structural schematic diagram of a collision processing device for a vehicle battery according to an embodiment of the present application. As shown in the figure, Figure 1As shown, the vehicle battery collision processing method provided by the embodiment of the present application can be applied to Figure 1 The control module 105 in the vehicle battery collision processing device 100 as shown, the collision processing device 100 further comprises a vehicle battery pack 101, a plurality of elastic wave detection modules 103 and a plurality of cutting modules 104; the vehicle battery pack 101 comprises at least two battery modules 102, each battery module 102 is connected in series through a high-voltage copper bar, each battery module 102 corresponds to at least one elastic wave detection module 103, and each high-voltage copper bar corresponds to one cutting module 104; any elastic wave detection module 103 is installed at the bottom of the corresponding battery module 102; any cutting module 104 is installed on the corresponding high-voltage copper bar; each elastic wave detection module 103 and cutting module 104 are electrically connected to the control module 105 through a low-voltage wire harness respectively.

[0033] The vehicle battery pack 101 and the battery module 102 are used to supply power to the vehicle.

[0034] The elastic wave detection module 103 is used to obtain the elastic wave at the position of the corresponding battery module 102 when the vehicle battery collides, and convert the mechanical wave signal of the elastic wave into an electrical signal of the elastic wave.

[0035] The cutting module 104 is used to cut off the high-voltage copper bar connected with the faulty battery module 102 when the insulation of the vehicle battery pack 101 fails.

[0036] The control module 105 is used to determine the faulty battery module 102 in the vehicle battery pack 101 through the elastic wave signal obtained by the elastic wave detection module 103, and control the cutting module 104 to cut off the high-voltage copper bar connected with other battery modules 102.

[0037] Further, in the preferred scheme of the embodiment of the present application, any cutting module 104 is a powder-type active fuse.

[0038] A vehicle battery collision processing method provided by an embodiment of the present application will be described in detail below, which can be applied to the control module of the vehicle battery collision processing device described above.

[0039] Please refer to Figure 2 , Figure 2 A flowchart of a vehicle battery collision processing method provided by an embodiment of the present application. As shown in Figure 2 The vehicle battery collision processing method provided by the embodiment of the present application comprises the following steps:

[0040] S201, when receiving the elastic wave signal collected by any elastic wave detection module, determining that the vehicle battery collides.

[0041] In the embodiment of the present application, when the bottom of the vehicle battery is hit, the collision action will generate elastic waves (Elastic waves) on the battery structure. Elastic waves are a type of stress wave, which are used to represent the transmission of stress and strain caused by disturbance or external force in an elastic medium, that is, the vehicle battery pack in the embodiment of the present application. Among them, any elastic wave detection module is an elastic wave sensor, which is used to convert the mechanical wave of the elastic wave into an electrical signal of the elastic wave. When the control module in the embodiment of the present application receives the elastic wave signal collected by any elastic wave detection module, it is determined that the vehicle battery has collided. Specifically, the control module in the embodiment of the present application can use the vehicle's battery management system (Battery Management System, BMS).

[0042] S202, based on the elastic wave signals collected by each of the elastic wave detection modules and a preset elastic wave analysis model, determine the elastic wave information generated in the vehicle battery by the collision; wherein, the elastic wave information includes the elastic wave amplitude of the elastic wave at the position of each of the elastic wave detection modules.

[0043] In an embodiment of the present application, a preset elastic wave analysis model is embedded in the BMS. The elastic wave analysis model is an elastic wave analysis model obtained by training based on a machine learning algorithm and an elastic wave algorithm. Specifically, during the training process, the elastic wave signal is input into the elastic wave analysis model, and the model extracts useful features from the signal, such as the amplitude, frequency, and phase of the elastic wave, and analyzes and classifies the extracted features using the machine learning algorithm and the elastic wave algorithm. By training the model, different types of collision objects and collision modes can be identified. During the application process, the elastic wave signals collected by each of the elastic wave detection modules are input into the preset elastic wave analysis model, and the model can output the elastic wave amplitude of the position of each elastic wave detection module in the collision.

[0044] S203, obtaining the insulation resistance of the vehicle battery pack; if the insulation resistance is less than a preset minimum insulation resistance threshold, determining that the vehicle battery insulation has failed.

[0045] In an embodiment of the present application, after a collision is detected, the insulation resistance of the vehicle battery pack is obtained through the BMS. If the insulation resistance of the vehicle battery pack is less than a preset minimum insulation resistance threshold, it means that a faulty battery module in the battery pack is in contact with the battery case and a short circuit occurs, resulting in insulation failure. At this time, the vehicle battery pack needs to be actively protected to avoid a fire caused by a short circuit in the vehicle battery pack due to insulation failure.

[0046] S204, determining a target elastic wave detection module based on each of the elastic wave amplitudes and a preset maximum elastic wave amplitude threshold; and determining the battery module corresponding to the target elastic wave detection module as a faulty battery module; the target elastic wave detection module is an elastic wave detection module whose elastic wave amplitude is greater than the preset maximum elastic wave amplitude threshold.

[0047] In the embodiment of the present application, since the amplitude of the elastic wave can be used to describe the intensity and energy of the wave, and represents the absolute value of the maximum displacement of an object from its equilibrium position when it vibrates, that is, the greater the elastic wave amplitude, the greater the structural damage to the vehicle's power battery. Therefore, the present application compares the elastic wave amplitude at the location of each elastic wave detection module obtained from the elastic wave analysis model with a preset maximum elastic wave amplitude threshold, and determines the battery module corresponding to the elastic wave detection module with an elastic wave amplitude greater than the preset maximum elastic wave amplitude threshold as a faulty battery module. Among them, the preset maximum elastic wave amplitude threshold is a pre-set maximum value of the elastic wave amplitude determined based on experimental results that can ensure that the battery module does not fail. If the elastic wave amplitude is higher than the threshold, the structure of the battery module at the corresponding position will be damaged and fail.

[0048] S205 , generating a control signal to control a target cutting-off module to cut off the corresponding high-voltage copper busbar; the target cutting-off module is a cutting-off module on the high-voltage copper busbar connected to the faulty battery module.

[0049] In this embodiment of the present application, after identifying the faulty battery modules in the vehicle's battery pack, it is necessary to isolate these faulty battery modules from other battery modules to prevent fires caused by short circuits within the battery pack. Specifically, the BMS generates a control signal and sends it via a low-voltage wiring harness to a target disconnection module installed on the high-voltage copper busbars connected to the positive and negative electrodes of the faulty battery module, controlling the target disconnection module to disconnect the corresponding high-voltage copper busbar.

[0050] Furthermore, after generating a control signal to control the target cutting module to cut off the corresponding high-voltage copper busbar, the method further includes:

[0051] Step a1, generating and outputting first prompt information; the first prompt information is used to prompt the vehicle battery insulation failure and the faulty battery module information in the battery pack.

[0052] In the embodiment of the present application, after the target disconnection module is controlled to disconnect the corresponding high-voltage copper busbar, the BMS generates and outputs a first prompt message, wherein the first prompt message is used to indicate the vehicle battery insulation failure and the faulty battery module information in the battery pack.

[0053] Here, the first prompt information can be displayed on the vehicle's display system, reminding the user that the collision has caused the vehicle's battery pack insulation to fail, making the vehicle unable to continue operating. It also displays specific information about the faulty battery module in the battery pack and reminds the user to exit the vehicle to avoid danger. Alternatively, the prompt can be provided by flashing an alarm indicator light or sounding a buzzer, etc., without specific limitations here.

[0054] In a possible implementation, the elastic wave information further includes collision position coordinates, collision force value, collision object information, and collision mode information; and the method further includes:

[0055] Step b1: If the insulation resistance is greater than or equal to a preset minimum insulation resistance threshold, it is determined that the vehicle battery has not suffered insulation failure.

[0056] In an embodiment of the present application, if the insulation resistance of the vehicle battery pack obtained by the BMS is greater than or equal to the preset minimum insulation resistance threshold, it means that the collision did not cause the vehicle battery insulation to fail, and there is no need to cut off the high-voltage copper busbar for protection.

[0057] Step b2: determining the extent of damage to the vehicle battery based on the collision force value, collision object information, and collision mode information.

[0058] In this embodiment of the present application, the elastic wave analysis model can also output the collision location coordinates, collision force, collision object information, and collision mode information after the analysis is completed. The BMS can compare the collision force, collision object information, and collision mode information with historical collision conditions to determine the extent of damage to the vehicle battery pack in the collision.

[0059] Step b3: Determine whether to output an alarm prompt message based on the amplitudes of each elastic wave and a preset minimum elastic wave amplitude threshold.

[0060] In an embodiment of the present application, after obtaining the collision position coordinates, collision force value, collision object information, collision mode information and the degree of damage to the vehicle battery pack in each collision, the BMS will store the above information and record the collision conditions of the vehicle battery pack throughout its life cycle to achieve data backup and rapid repair of the battery pack after damage.

[0061] However, if a collision causes significant damage to the vehicle's battery pack, the BMS will need to issue an alarm to remind the user to drive with caution and repair the battery pack as soon as possible. Specifically, the system determines whether to issue an alarm by comparing the amplitudes of the individual elastic waves detected in the collision with a preset minimum elastic wave amplitude threshold. The preset minimum elastic wave amplitude threshold is the minimum elastic wave amplitude determined based on historical vehicle driving data and does not affect normal vehicle operation.

[0062] In one possible implementation, the method further includes:

[0063] Step c1: if there is an elastic wave amplitude greater than the minimum elastic wave amplitude threshold among the elastic wave amplitudes, generate and output second prompt information; the second prompt information is used to prompt corresponding alarm information according to the degree of damage to the vehicle battery.

[0064] In this step, if any of the elastic wave amplitudes exceeds the minimum elastic wave amplitude threshold, indicating that the collision may affect the normal driving of the vehicle, the BMS generates and outputs a second prompt message. The second prompt message is used to prompt a corresponding alarm message based on the degree of damage to the vehicle battery.

[0065] Here, the second prompt information can be displayed on the vehicle's display system, reminding the user that the collision has caused damage to the vehicle's battery pack and displaying information about the extent of the damage. It also reminds the user to drive carefully and repair the vehicle's battery pack as soon as possible, so that the user can understand the specific damage to the vehicle's battery pack and respond quickly. Alternatively, the prompt can be provided by flashing an alarm indicator or sounding a buzzer, etc., without specific limitations here.

[0066] In one possible implementation, the method further includes:

[0067] Step d1: If the elastic wave amplitudes are all less than or equal to the minimum elastic wave amplitude threshold, it is determined that the vehicle battery can be used normally.

[0068] In this step, if the elastic wave amplitudes are all less than or equal to the minimum elastic wave amplitude threshold, it means that the collision will not affect the normal driving of the vehicle, and the vehicle battery is determined to be able to be used normally, and no alarm prompt information is output.

[0069] In a possible implementation, S105 includes:

[0070] Step e1, generating and sending a current signal to the target cutting module; the current value of the current signal is greater than the rated maximum current of the target cutting module, so that the gunpowder in the target cutting module is heated by the current signal and explodes to cut off the corresponding high-voltage copper busbar.

[0071] In the embodiment of the present application, the cut-off module is a powder-type active fuse, and the BMS generates and sends a current signal to the target cut-off module; the current value of the current signal is greater than the rated maximum current of the target cut-off module, so that the powder in the target cut-off module is heated by the current signal and explodes to cut off the corresponding high-voltage copper busbar.

[0072] The following is a specific example to further illustrate the vehicle battery collision treatment method provided in the embodiment of the present application:

[0073] As Figure 1 shown, the present description mainly realizes the collision processing of the vehicle battery through the following steps:

[0074] Step S1, the elastic wave is generated in the vehicle battery pack 101 by the collision action.

[0075] Step S2, the (V) number elastic wave detection module installed at the bottom of the (five) number battery module 102 detects the elastic wave, and determines that the vehicle battery has been collided.

[0076] Step S3, the control module 105 analyzes the elastic wave signal through the elastic wave analysis model, and obtains the elastic wave amplitude at the position of each elastic wave detection module 103, the collision position coordinate, the collision force value, the collision object information and the collision mode information.

[0077] Step S4, the control module 105 obtains the insulation resistance of the vehicle battery pack.

[0078] Step S5, if the insulation resistance is greater than or equal to the preset minimum insulation resistance threshold, it is determined that the vehicle battery insulation fails, and the (four) number battery module 102 corresponding to the (IV) number elastic wave detection module with the elastic wave amplitude greater than the preset maximum elastic wave amplitude threshold is determined as the fault battery module.

[0079] Step S6, the control module 105 controls the (3) number cutting module 104 and the (4) number cutting module 104 installed on the high-voltage copper bar connected with the (four) number battery module 102 to cut off the corresponding high-voltage copper bar.

[0080] The embodiment of the present application provides a collision processing method for a vehicle battery, which is applied to a control module of a collision processing device for a vehicle battery, wherein the collision processing device further comprises a vehicle battery pack, a plurality of elastic wave detection modules and a plurality of cut-off modules; the vehicle battery pack comprises at least two battery modules, each battery module is connected in series through a high-voltage copper bus, each battery module corresponds to at least one elastic wave detection module, and each high-voltage copper bus corresponds to a cut-off module; any elastic wave detection module is installed at the bottom of the corresponding battery module; any cut-off module is installed on the corresponding high-voltage copper bus; each elastic wave detection module and the cut-off module are respectively electrically connected to the control module through a low-voltage wiring harness; the collision processing method comprises: when an elastic wave signal collected by any elastic wave detection module is received, it is determined that the vehicle battery has collided; based on each elastic wave detection module, The module collects elastic wave signals and a preset elastic wave analysis model to determine the elastic wave information generated in the vehicle battery by the collision; wherein the elastic wave information includes the elastic wave amplitude at the location of each elastic wave detection module; obtains the insulation resistance of the vehicle battery pack; if the insulation resistance is less than the preset minimum insulation resistance threshold, determines that the vehicle battery insulation has failed; determines the target elastic wave detection module based on each elastic wave amplitude and the preset maximum elastic wave amplitude threshold; and determines the battery module corresponding to the target elastic wave detection module as the faulty battery module; the target elastic wave detection module is the elastic wave detection module whose elastic wave amplitude is greater than the preset maximum elastic wave amplitude threshold; generates a control signal to control the target cut-off module to cut off the corresponding high-voltage copper busbar; the target cut-off module is the cut-off module on the high-voltage copper busbar connected to the faulty battery module. In this way, the faulty battery module in the battery pack is determined by elastic waves and its connection with other battery modules is cut off, avoiding short circuit and fire due to insulation failure, thereby improving the safety of the vehicle battery.

[0081] Based on the same application concept, the embodiment of the present application also provides a control module corresponding to the collision handling method of the vehicle battery provided in the above embodiment. Since the principle of solving the problem by the control module in the embodiment of the present application is similar to the collision handling method in the above embodiment of the present application, the implementation of the control module can refer to the implementation of the method, and the repeated parts will not be repeated.

[0082] See also Figure 3 , Figure 3 This is one of the functional module diagrams of a control module provided in an embodiment of the present application, such as Figure 3 As shown, the control module 105 includes:

[0083] The first determining unit 1051 is configured to determine that a collision has occurred with the vehicle battery upon receiving an elastic wave signal collected by any of the elastic wave detection modules.

[0084] The second determination unit 1052 is used to determine the elastic wave information generated in the vehicle battery by the collision based on the elastic wave signals collected by each of the elastic wave detection modules and a preset elastic wave analysis model; wherein the elastic wave information includes the elastic wave amplitude of the elastic wave at the position of each of the elastic wave detection modules.

[0085] The third determining unit 1053 is configured to obtain the insulation resistance of the vehicle battery pack; if the insulation resistance is less than a preset minimum insulation resistance threshold, it is determined that the vehicle battery insulation has failed.

[0086] The fourth determination unit 1054 is used to determine the target elastic wave detection module based on each of the elastic wave amplitudes and the preset maximum elastic wave amplitude threshold; and determine the battery module corresponding to the target elastic wave detection module as a faulty battery module; the target elastic wave detection module is an elastic wave detection module whose elastic wave amplitude is greater than the preset maximum elastic wave amplitude threshold.

[0087] The execution unit 1055 is configured to generate a control signal to control a target disconnection module to disconnect the corresponding high-voltage copper busbar; the target disconnection module is a disconnection module on the high-voltage copper busbar connected to the faulty battery module.

[0088] Further, see Figure 4 , Figure 4 This is a second functional module diagram of a control module provided in an embodiment of the present application, such as Figure 4 As shown, the control module 105 further includes:

[0089] The second execution unit 1056 is used to generate and output a first prompt message; the first prompt message is used to prompt the vehicle battery insulation failure and the faulty battery module information in the battery pack.

[0090] In a possible implementation manner, the elastic wave information also includes the collision position coordinates, the collision force value, the collision object information, and the collision mode information; Figure 4 As shown, the control module 105 further includes:

[0091] The third determining unit 1053 is further configured to determine that the vehicle battery has not suffered insulation failure if the insulation resistance is greater than or equal to a preset minimum insulation resistance threshold.

[0092] The fifth determining unit 1057 is configured to determine the extent of damage to the vehicle battery based on the collision force value, collision object information, and collision mode information.

[0093] The sixth determining unit 1058 is configured to determine whether to output an alarm prompt message based on each of the elastic wave amplitudes and a preset minimum elastic wave amplitude threshold.

[0094] In one possible implementation, Figure 4 As shown, the control module 105 further includes:

[0095] The third execution unit 1059 is used to generate and output a second prompt message if there is an elastic wave amplitude greater than the minimum elastic wave amplitude threshold in the elastic wave amplitude; the second prompt message is used to prompt a corresponding alarm message according to the degree of damage to the vehicle battery.

[0096] In one possible implementation, Figure 4 As shown, the control module 105 further includes:

[0097] The seventh determining unit 10510 is configured to determine that the vehicle battery can be used normally if the elastic wave amplitudes are all less than or equal to the minimum elastic wave amplitude threshold.

[0098] In a possible implementation, any of the cutting modules is a powder-type active fuse; when the execution unit 1055 is used to generate a control signal to control the target cutting module to cut off the corresponding high-voltage copper busbar, the execution unit 1055 is specifically configured to:

[0099] A current signal is generated and sent to the target cutting module; the current value of the current signal is greater than the rated maximum current of the target cutting module, so that the gunpowder in the target cutting module is heated by the current signal and explodes to cut off the corresponding high-voltage copper busbar.

[0100] The control module provided by the embodiment of the application is applied to a collision processing device of a vehicle battery, and the collision processing device further comprises a vehicle battery pack, a plurality of elastic wave detection modules and a plurality of cutting-off modules. The vehicle battery pack comprises at least two battery modules, each battery module is connected in series through a high-voltage copper bar, each battery module corresponds to at least one elastic wave detection module, and each high-voltage copper bar corresponds to one cutting-off module. Any elastic wave detection module is installed at the bottom of the corresponding battery module, and any cutting-off module is installed on the corresponding high-voltage copper bar. Each elastic wave detection module and cutting-off module are electrically connected to the control module through a low-voltage wire harness. The control module comprises: a first determination unit configured to determine that the vehicle battery has collided when receiving an elastic wave signal collected by any elastic wave detection module; a second determination unit configured to determine elastic wave information generated in the vehicle battery due to the collision based on the elastic wave signal collected by each elastic wave detection module and a preset elastic wave analysis model, wherein the elastic wave information comprises an elastic wave amplitude of the elastic wave at the position of each elastic wave detection module; a third determination unit configured to obtain an insulation resistance of the vehicle battery pack; a fourth determination unit configured to determine a target elastic wave detection module according to each elastic wave amplitude and a preset maximum elastic wave amplitude threshold, and determine a battery module corresponding to the target elastic wave detection module as a faulty battery module; the target elastic wave detection module is an elastic wave detection module with an elastic wave amplitude greater than the preset maximum elastic wave amplitude threshold; and an execution unit configured to generate a control signal to control a target cutting-off module to cut off the corresponding high-voltage copper bar; the target cutting-off module is a cutting-off module on the high-voltage copper bar connected to the faulty battery module. In this way, the faulty battery module in the battery pack is determined through the elastic wave, and the connection between the faulty battery module and other battery modules is cut off, thereby avoiding short-circuiting and fire due to insulation failure, and improving the safety of the vehicle battery.

[0101] Based on the same application concept, the embodiment of the application further provides a vehicle comprising the collision processing device of the vehicle battery as described above and adopting the collision processing method of the vehicle battery as described above to process the collision of the vehicle battery, and details are not repeated.

[0102] Please refer to Figure 5 , Figure 5 A structural schematic diagram of an electronic device 500 provided by the embodiment of the application comprises a processor 510, a memory 520 and a bus 530.

[0103] The memory 520 stores machine readable instructions executable by the processor 510, when the electronic device 500 is running, the processor 510 and the memory 520 communicate through the bus 530, the machine readable instructions are executed by the processor 510 to execute the steps of the collision processing method of the vehicle battery as described above, and the specific implementation mode can be referred to the method embodiment, which is not repeated here.

[0104] The embodiment of the present application further provides a computer readable storage medium, and the computer readable storage medium stores a computer program. When the computer program is run by a processor, the steps of the collision processing method of the vehicle battery are executed. For details, refer to the method embodiment, which will not be repeated here.

[0105] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

[0106] In the embodiments provided in the present application, it should be understood that the disclosed method, module and device can be implemented in other manners. The described device embodiments are only schematic, for example, the division of the units is only a logical function division, and there can be another division manner in actual implementation, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections between the units can be indirect couplings or communication connections through some interfaces, devices or units, and can be electrical, mechanical or other forms.

[0107] The units described as separate components can or can not be physically separate, and the components displayed as units can or can not be physical units, that is, can be located in one place, or can be distributed on a plurality of network units. According to actual needs, some or all of the units can be selected to achieve the purpose of the embodiment scheme.

[0108] In addition, each functional unit in the embodiments of the present application can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit.

[0109] If the functions are implemented in the form of software function units and sold or used as independent products, they can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application essentially or the parts that contribute to the prior art or parts of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a number of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and various media that can store program codes.

[0110] It should be noted that similar reference 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 subsequent drawings. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0111] Finally, it should be noted that the above-described embodiments are only specific implementations of the present application, which are used to illustrate the technical solutions of the present application, but not to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can modify or easily think of changes to the technical solutions described in the foregoing embodiments within the technical scope disclosed by the present application, or make equivalent replacements to some technical features. These modifications, changes or replacements do not cause the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application. They should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method for handling a collision of a vehicle battery, characterized in that: A control module for a collision handling device applied to a vehicle battery, the collision handling device further comprising a vehicle battery pack, a plurality of elastic wave detection modules, and a plurality of disconnection modules; the vehicle battery pack comprising at least two battery modules, each of which is connected in series via a high-voltage copper busbar, each battery module corresponding to at least one elastic wave detection module, and each high-voltage copper busbar corresponding to one disconnection module; any elastic wave detection module being mounted on the bottom of a corresponding battery module; and any disconnection module being mounted on a corresponding high-voltage copper busbar; Each of the elastic wave detection modules and the cutting module is electrically connected to the control module via a low-voltage wiring harness; the method includes: When receiving an elastic wave signal collected by any of the elastic wave detection modules, determining that a collision has occurred with the vehicle battery; Determining elastic wave information generated in the vehicle battery by the collision based on the elastic wave signals collected by each of the elastic wave detection modules and a preset elastic wave analysis model; wherein the elastic wave information includes the elastic wave amplitude of the elastic wave at the location of each of the elastic wave detection modules; Obtaining the insulation resistance of the vehicle battery pack; if the insulation resistance is less than a preset minimum insulation resistance threshold, determining that the vehicle battery insulation has failed; Determining a target elastic wave detection module based on each of the elastic wave amplitudes and a preset maximum elastic wave amplitude threshold; and determining the battery module corresponding to the target elastic wave detection module as a faulty battery module; the target elastic wave detection module is an elastic wave detection module whose elastic wave amplitude is greater than the preset maximum elastic wave amplitude threshold; A control signal is generated to control a target cutting module to cut off the corresponding high-voltage copper busbar; the target cutting module is a cutting module on the high-voltage copper busbar connected to the faulty battery module.

2. The vehicle battery collision treatment method according to claim 1, characterized in that: After generating a control signal to control the target cutting module to cut off the corresponding high-voltage copper busbar, the method further includes: Generate and output a first prompt message; the first prompt message is used to prompt the vehicle battery insulation failure and the faulty battery module information in the battery pack.

3. The vehicle battery collision treatment method according to claim 1, characterized in that: The elastic wave information also includes the collision position coordinates, the collision force value, the collision object information and the collision mode information; the method further includes: If the insulation resistance is greater than or equal to a preset minimum insulation resistance threshold, determining that the vehicle battery has not failed in insulation; determining the extent of damage to the vehicle battery based on the collision force value, collision object information, and collision mode information; Whether to output an alarm prompt message is determined based on the amplitudes of each elastic wave and a preset minimum elastic wave amplitude threshold.

4. The vehicle battery collision treatment method according to claim 3, characterized in that: The method further comprises: If there is an elastic wave amplitude greater than the minimum elastic wave amplitude threshold among the elastic wave amplitudes, a second prompt information is generated and output; the second prompt information is used to prompt corresponding alarm information according to the degree of damage to the vehicle battery.

5. The method for handling a collision of a vehicle battery according to claim 3, wherein: The method further comprises: If the elastic wave amplitudes are all less than or equal to the minimum elastic wave amplitude threshold, it is determined that the vehicle battery can be used normally.

6. The vehicle battery collision treatment method according to claim 1, characterized in that: Any of the cutting modules is a powder-type active fuse; the generating of a control signal to control the target cutting module to cut off the corresponding high-voltage copper busbar includes: A current signal is generated and sent to the target cutting module; the current value of the current signal is greater than the rated maximum current of the target cutting module, so that the gunpowder in the target cutting module is heated by the current signal and explodes to cut off the corresponding high-voltage copper busbar.

7. A control module, characterized in that: A collision handling device for a vehicle battery, the collision handling device further comprising a vehicle battery pack, a plurality of elastic wave detection modules, and a plurality of disconnection modules; the vehicle battery pack comprising at least two battery modules, each of which is connected in series via a high-voltage copper busbar, each battery module corresponding to at least one elastic wave detection module, and each high-voltage copper busbar corresponding to one disconnection module; any elastic wave detection module is mounted on the bottom of a corresponding battery module; and any disconnection module is mounted on a corresponding high-voltage copper busbar; Each of the elastic wave detection modules and the cutting module is electrically connected to the control module via a low-voltage wiring harness; the control module includes: a first determining unit, configured to determine that a collision has occurred with the vehicle battery upon receiving an elastic wave signal collected by any of the elastic wave detection modules; a second determining unit, configured to determine elastic wave information generated in the vehicle battery by the collision based on the elastic wave signals collected by each of the elastic wave detection modules and a preset elastic wave analysis model; wherein the elastic wave information includes elastic wave amplitudes of the elastic waves at the locations of each of the elastic wave detection modules; a third determining unit, configured to obtain an insulation resistance of the vehicle battery pack; and determine that the vehicle battery insulation has failed if the insulation resistance is less than a preset minimum insulation resistance threshold; a fourth determining unit, configured to determine a target elastic wave detection module based on each of the elastic wave amplitudes and a preset maximum elastic wave amplitude threshold; and determine the battery module corresponding to the target elastic wave detection module as a faulty battery module; the target elastic wave detection module is an elastic wave detection module having an elastic wave amplitude greater than the preset maximum elastic wave amplitude threshold; The execution unit is used to generate a control signal to control the target cutting module to cut off the corresponding high-voltage copper busbar; the target cutting module is the cutting module on the high-voltage copper busbar connected to the faulty battery module.

8. The control module according to claim 7, characterized in that: Any of the cutting modules is a powder-type active fuse; when the execution unit is used to generate a control signal to control the target cutting module to cut off the corresponding high-voltage copper busbar, the execution unit is specifically used to: A current signal is generated and sent to the target cutting module; the current value of the current signal is greater than the rated maximum current of the target cutting module, so that the gunpowder in the target cutting module is heated by the current signal and explodes to cut off the corresponding high-voltage copper busbar.

9. A collision handling device for a vehicle battery, characterized in that: The collision handling device includes a vehicle battery pack, multiple elastic wave detection modules, multiple cut-off modules and a control module as described in any one of claims 7 to 8; the vehicle battery pack includes at least two battery modules, each of the battery modules is connected in series through a high-voltage copper bus, each battery module corresponds to at least one elastic wave detection module, and each high-voltage copper bus corresponds to one cut-off module; any elastic wave detection module is installed at the bottom of the corresponding battery module; any cut-off module is installed on the corresponding high-voltage copper bus; each elastic wave detection module and the cut-off module are respectively electrically connected to the control module through a low-voltage wiring harness.

10. A vehicle, characterized in that: A collision handling device comprising a vehicle battery as claimed in claim 9.

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