Vehicle battery collision processing method, control module, device and vehicle

Abstract

The invention provides a collision processing method of a vehicle battery, a control module, a device and a vehicle, the method is applied to the control module of the device, and when an elastic wave signal collected by any elastic wave detection module is received, it is determined that the vehicle battery is collided; based on the elastic wave signals collected by the elastic wave detection modules and a preset elastic wave analysis model, elastic wave information generated by collision in the vehicle battery is determined; acquiring the insulation resistance of the vehicle battery pack; if the insulation resistance is smaller than a preset minimum insulation resistance threshold value, determining that the vehicle battery insulation is invalid; determining a fault battery module corresponding to the target elastic wave detection module according to an elastic wave amplitude in the elastic wave information and a preset maximum elastic wave amplitude threshold; and generating a control signal to control the target cut-off module to cut off the corresponding high-voltage copper bar. The fault battery module in the battery pack is determined through elastic waves, and the connection between the fault battery module and other battery modules is cut off, so that short circuit and fire due to insulation failure are avoided, and the safety of the vehicle battery is improved.

Description

Technical Field

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

[0002] With the popularity of new energy vehicles, the number of safety accidents caused by collisions with the bottom of the vehicle battery is increasing. The vehicle battery is generally placed at the bottom of the chassis. Potholes, stones or other obstacles on the road, or going down stairs during driving may cause the bottom of the power battery to collide and cause safety accidents.

[0003] The existing collision handling of vehicle batteries is to cut off the power supply of the positive and negative poles of the entire battery pack after detecting that the vehicle battery insulation fails due to collision. However, the interior of the 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 determine the faulty battery module in the battery pack through elastic waves 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 through a high-voltage copper bus, 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 bus; each of the elastic wave detection modules and the cut-off modules is electrically connected to the control module through 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 the vehicle battery has collided;

[0008] Based on the elastic wave signals collected by each of the elastic wave detection modules and a preset elastic wave analysis model, determining 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;

[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 fails;

[0010] According to each of the elastic wave amplitudes and the preset maximum elastic wave amplitude threshold, a target elastic wave detection module is determined; and the battery module corresponding to the target elastic wave detection module is determined 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, the embodiment of the present application further provides a control module, which is applied to a collision processing device of a vehicle battery, wherein the collision processing device also includes a vehicle battery pack, a plurality of elastic wave detection modules and a plurality of cut-off modules; the vehicle battery pack includes at least two battery modules, each of which is connected in series through a high-voltage copper bus, 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 installed at the bottom of the corresponding battery module; any of the cut-off modules is installed on the corresponding high-voltage copper bus; each of the elastic wave detection modules and the cut-off modules are electrically connected to the control module through a low-voltage wiring harness; the control module includes:

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

[0014] A second determination unit is used 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 the elastic wave amplitude of the elastic wave at the position of each of the elastic wave detection modules;

[0015] A third determination unit, configured to obtain 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 fails;

[0016] The fourth determination unit is used to determine a target elastic wave detection module according to 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 whose elastic wave amplitude is greater than the preset maximum elastic wave amplitude threshold;

[0017] 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 a cutting module on the high-voltage copper busbar connected to the faulty battery module.

[0018] In the third aspect, an embodiment of the present application also provides a collision processing device for a vehicle battery, the collision processing device comprising a vehicle battery pack, multiple elastic wave detection modules, multiple cut-off 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 bus, each of the battery modules corresponds to at least one elastic wave detection module, and each high-voltage copper bus corresponds to one cut-off module; any of the elastic wave detection modules is installed at the bottom of the corresponding battery module; any of the cut-off modules is installed on the corresponding high-voltage copper bus; each of the elastic wave detection modules and the cut-off modules is electrically connected to the control module through a low-voltage wiring harness.

[0019] In a fourth aspect, an embodiment of the present application further provides a vehicle, comprising the collision handling device for the 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, determine the elastic wave information generated by the collision in the vehicle battery; wherein the elastic wave information includes the elastic wave amplitude of the elastic wave at the position of each elastic wave detection module; obtain the insulation resistance of the vehicle battery pack; if the insulation resistance is less than the preset minimum insulation resistance threshold, determine that the vehicle battery insulation has failed; according to each elastic wave amplitude and the preset maximum elastic wave amplitude threshold, determine the target elastic wave detection module; and determine the battery module corresponding to the target elastic wave detection module as the 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; generate a control signal to control the target cut-off module to cut off the corresponding high-voltage copper bus; the target cut-off module is a 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, which avoids short circuit and fire due to insulation failure and improves 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 specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

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

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

[0025] Figure 3 One of the functional module diagrams of a control module provided in an embodiment of the present application is shown;

[0026] Figure 4 A second functional module diagram of a control module provided in an embodiment of the present application is shown;

[0027] Figure 5 A schematic structural diagram of an electronic device provided in an embodiment of the present application is shown.

[0028] Description of main component symbols:

[0029] In the figure: 100-collision handling device; 101-vehicle battery pack; 102-battery module; 103-elastic wave detection module; 104-cut-off 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] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application usually described and shown in the drawings here 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 application claimed for protection, but merely represents the 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 making creative work belong to the scope of protection of the present application.

[0031] The following will be combined Figure 1 The implementation of the embodiment of the present application is described in detail; 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.

[0032] See also Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle battery collision processing device provided in an embodiment of the present application. Figure 1As shown, the collision treatment method of the vehicle battery provided in the embodiment of the present application can be applied to Figure 1 The control module 105 in the collision processing device 100 of the vehicle battery shown in the figure, the collision processing device 100 also includes a vehicle battery pack 101, multiple elastic wave detection modules 103 and multiple cut-off modules 104; the vehicle battery pack 101 includes at least two battery modules 102, each battery module 102 is connected in series through a high-voltage copper bus, each battery module 102 corresponds to at least one elastic wave detection module 103, and each high-voltage copper bus corresponds to a cut-off module 104; any elastic wave detection module 103 is installed at the bottom of the corresponding battery module 102; any cut-off module 104 is installed on the corresponding high-voltage copper bus; each elastic wave detection module 103 and the cut-off module 104 are respectively electrically connected to the control module 105 through a low-voltage wiring harness.

[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 battery module 102 corresponding to the collision of the vehicle battery, and convert the mechanical wave signal of the elastic wave into the electrical signal of the elastic wave.

[0035] The cut-off module 104 is used to cut off the high-voltage copper bus connected to 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 disconnection module 104 to disconnect the high-voltage copper busbar connecting it to other battery modules 102 .

[0037] Furthermore, in a preferred solution of the embodiment of the present application, any cut-off module 104 is a powder-type active fuse.

[0038] A collision processing method for a vehicle battery provided in an embodiment of the present application is described in detail below. The collision processing method can be applied to a control module of the collision processing device of the vehicle battery described above.

[0039] See also Figure 2 , Figure 2 This is a flow chart of a vehicle battery collision processing method provided by an embodiment of the present application. Figure 2 As shown, the vehicle battery collision processing method provided in the embodiment of the present application includes the following steps:

[0040] S201, when an elastic wave signal collected by any of the elastic wave detection modules is received, it is determined that a collision occurs to the vehicle battery.

[0041] In the embodiment of the present application, when the vehicle battery collides with the bottom, 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 indicate 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 select the battery management system (Battery Management System, BMS) of the vehicle.

[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 prevent the vehicle battery pack from catching fire due to a short circuit due to insulation failure.

[0046] S204, determining a target elastic wave detection module according to 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 the object from the equilibrium position when it vibrates, that is to say, the larger the elastic wave amplitude is, the greater the structural damage to the vehicle 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 the 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 maximum value of the elastic wave amplitude that is set in advance and determined according to experimental results to 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 module to cut off a 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.

[0049] In the embodiment of the present application, after the faulty battery modules in the vehicle battery pack are determined, it is necessary to isolate these faulty battery modules from other battery modules to avoid fire caused by short circuits in the battery pack. Specifically, the BMS generates a control signal and sends the control signal to the target cut-off module installed on the high-voltage copper bus connected to the positive and negative electrodes of the faulty battery module through a low-voltage wiring harness, and controls the target cut-off module to cut off the corresponding high-voltage copper bus.

[0050] Further, 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, generate and output a first prompt message; the first prompt message is used to prompt the insulation failure of the vehicle battery and the faulty battery module information in the battery pack.

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

[0053] Here, the first prompt information can be displayed through the vehicle's display system, reminding the user that the collision has caused the vehicle's battery pack insulation to fail and the vehicle cannot continue to operate, and displaying the specific information of the faulty battery module in the battery pack, while reminding the user to get out of the vehicle to avoid danger. Alternatively, the prompt can be provided by flashing an alarm indicator light or beeping an alarm, etc., without specific restrictions.

[0054] In a possible implementation manner, 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 no 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 failure, and there is no need to cut off the high-voltage copper busbar for protection.

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

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

[0059] Step b3, determining whether to output an alarm prompt message according to each of the elastic wave amplitudes and a preset minimum elastic wave amplitude threshold.

[0060] In the 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, so as to achieve data backup and rapid repair of the battery pack after damage.

[0061] However, when the collision causes a relatively large degree of damage to the vehicle battery pack, the BMS needs to output an alarm prompt message to remind the user to drive carefully and repair the vehicle battery pack as soon as possible. Specifically, by comparing the amplitudes of each elastic wave obtained from the collision with the preset minimum elastic wave amplitude threshold, it is determined whether to output an alarm prompt message. Here, the preset minimum elastic wave amplitude threshold is the minimum elastic wave amplitude that does not affect the normal driving of the vehicle, which is determined based on historical vehicle driving data.

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

[0063] Step c1, if there is an elastic wave amplitude greater than the minimum elastic wave amplitude threshold in the elastic wave amplitude, 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 there is an elastic wave amplitude greater than the minimum elastic wave amplitude threshold in the elastic wave amplitude, it means that the collision may affect the normal driving of the vehicle, and the BMS generates and outputs a second prompt information. The second prompt information is used to prompt corresponding alarm information according to the degree of damage to the vehicle battery.

[0065] Here, the second prompt information can be displayed through 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 degree of damage to the battery pack, while reminding the user to drive carefully and repair the vehicle's battery pack as soon as possible, so that the user can understand the specific situation of the vehicle's battery pack damage and respond quickly. Or the prompt can be given by flashing the alarm indicator light or beeping the alarm, etc., without specific restrictions here.

[0066] In a 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 can 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 collision treatment method of the vehicle battery provided in the embodiment of the present application is further described below through a specific example:

[0073] like Figure 1 As shown, this example mainly implements the collision handling of the vehicle battery through the following steps:

[0074] Step S1 , the collision action generates elastic waves in the vehicle battery pack 101 .

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

[0076] In step S3 , the control module 105 analyzes the elastic wave signal through an elastic wave analysis model to obtain the elastic wave amplitude, collision position coordinates, collision force value, collision object information, and collision mode information of each elastic wave detection module 103 position.

[0077] In 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 has failed, and the (IV) battery module 102 corresponding to the (IV) elastic wave detection module whose elastic wave amplitude is greater than the preset maximum elastic wave amplitude threshold is determined as a faulty battery module.

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

[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 also includes a vehicle battery pack, a plurality of elastic wave detection modules and a plurality of 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 each elastic wave detection module The elastic wave signal collected by the module and the preset elastic wave analysis model determine the elastic wave information generated by the collision in the vehicle battery; wherein the elastic wave information includes the elastic wave amplitude of the elastic wave at the position of each elastic wave detection module; obtain the insulation resistance of the vehicle battery pack; if the insulation resistance is less than the preset minimum insulation resistance threshold, determine that the vehicle battery insulation has failed; determine the target elastic wave detection module according to each elastic wave amplitude and the preset maximum elastic wave amplitude threshold; and determine the battery module corresponding to the target elastic wave detection module as the 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; generate a control signal to control the target cut-off module to cut off the corresponding high-voltage copper bus; the target cut-off module is a 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, which avoids short circuit and fire due to insulation failure and improves the safety of the vehicle battery.

[0081] Based on the same application concept, a control module corresponding to the collision handling method of the vehicle battery provided in the above embodiment is also provided in the embodiment of the present application. 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 determination unit 1051 is used to determine that the vehicle battery has collided when 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 by the collision in the vehicle battery 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 determination unit 1053 is used 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 fails.

[0086] The fourth determination unit 1054 is used to determine the target elastic wave detection module according to 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 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 a cutting module on the high-voltage copper busbar connected to the faulty battery module.

[0088] For further information, see Figure 4 , Figure 4 The second functional module diagram of a control module provided in an embodiment of the present application is as follows: Figure 4 As shown, the control module 105 also 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 insulation failure of the vehicle battery 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 also includes:

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

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

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

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

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

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

[0097] The seventh determination unit 10510 is used 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 manner, 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 used 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 in the embodiment of the present application is applied to a collision processing device for a 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 control module includes: a first determination unit, which is used to determine that the vehicle battery has collided when an elastic wave signal collected by any elastic wave detection module is received; a second determination unit, which is used to determine that the vehicle battery has collided based on the elastic wave signals collected by each elastic wave detection module and The elastic wave analysis model is preset to 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 elastic wave detection module; the third determination unit is used to obtain the insulation resistance of the vehicle battery pack; if the insulation resistance is less than the preset minimum insulation resistance threshold, the vehicle battery insulation failure is determined; the fourth determination unit is used to determine the target elastic wave detection module according to each elastic wave amplitude and the preset maximum elastic wave amplitude threshold; 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 an elastic wave detection module with 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 cut-off module to cut off the corresponding high-voltage copper bus; the target cut-off module is a 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, which avoids short circuit and fire due to insulation failure and improves the safety of the vehicle battery.

[0101] Based on the same application concept, an embodiment of the present application also provides a vehicle, which includes a collision handling device for a vehicle battery as described above, and uses a collision handling method for a vehicle battery as described above to perform collision handling of the vehicle battery, and the repeated parts will not be repeated.

[0102] See also Figure 5 , Figure 5 A schematic diagram of the structure of an electronic device 500 provided in an embodiment of the present application includes: 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 communicates with the memory 520 through the bus 530. When the processor 510 is running, the machine-readable instructions execute the steps of the vehicle battery collision processing method as described above. The specific implementation method can be found in the method embodiment, which will not be repeated here.

[0104] An embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the vehicle battery collision processing method as described above are executed. The specific implementation method can be found in 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 processes of the above-described devices and units can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0106] In the embodiments provided in the present application, it should be understood that the disclosed methods, modules and devices can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0107] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

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

[0109] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0110] It should be noted that similar numbers and letters represent similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and are not to be understood as indicating or implying relative importance.

[0111] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application, rather than to limit them. The protection scope of the present application is not limited thereto. Although the present application is described in detail with reference to the above-mentioned embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-mentioned embodiments within the technical scope disclosed in the present application, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application. They should all be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on 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 processing device applied to a vehicle battery, the collision processing device further comprising 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 the battery modules is connected in series via a high-voltage copper bus, each of the battery modules corresponds to at least one of the elastic wave detection modules, and each of the high-voltage copper bus corresponds to one of the cut-off modules; 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 bus; Each of the elastic wave detection modules and the cut-off module is electrically connected to the control module through a low-voltage wiring harness; the method comprises: When receiving an elastic wave signal collected by any of the elastic wave detection modules, determining that the vehicle battery has collided; Based on the elastic wave signals collected by each of the elastic wave detection modules and a preset elastic wave analysis model, determining 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; 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 fails; According to each of the elastic wave amplitudes and the preset maximum elastic wave amplitude threshold, a target elastic wave detection module is determined; and the battery module corresponding to the target elastic wave detection module is determined 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 method for handling a collision of a vehicle battery 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 method for handling a collision of a vehicle battery 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 also includes: If the insulation resistance is greater than or equal to a preset minimum insulation resistance threshold, it is determined that the vehicle battery has no insulation failure; Determining the degree of damage to the vehicle battery based on the collision force value, collision object information, and collision mode information; Whether to output alarm prompt information is determined according to each of the elastic wave amplitudes and a preset minimum elastic wave amplitude threshold.

4. The method for handling a collision of a vehicle battery 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, characterized in that: 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 method for handling a collision of a vehicle battery according to claim 1, characterized in that: Any of the cutting modules is a powder-type active fuse; the generating control signal controls the target cutting module to cut off the corresponding high-voltage copper busbar, including: 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 processing device applied to a vehicle battery, the collision processing device further comprising 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 the battery modules is connected in series via a high-voltage copper bus, each of the battery modules corresponds to at least one elastic wave detection module, and each high-voltage copper bus 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 bus; Each of the elastic wave detection modules and the cutting module is electrically connected to the control module through a low-voltage wiring harness; the control module includes: A first determination unit, configured to determine that a collision has occurred with the vehicle battery when receiving an elastic wave signal collected by any of the elastic wave detection modules; A second determination unit is used 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 the elastic wave amplitude of the elastic wave at the position of each of the elastic wave detection modules; A third determination unit, configured to obtain 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 fails; The fourth determination unit is used to determine a target elastic wave detection module according to 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 whose elastic wave amplitude is 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 a 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 of the battery modules corresponds to at least one of the elastic wave detection modules, and each of the high-voltage copper bus corresponds to one of the cut-off modules; any of the elastic wave detection modules is installed at the bottom of the corresponding battery module; any of the cut-off modules is installed on the corresponding high-voltage copper bus; each of the elastic wave detection modules and the cut-off modules is 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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