Battery pack damage evaluation method and device, vehicle and storage medium

Abstract

The invention relates to the technical field of vehicles, in particular to a battery pack damage evaluation method and device, a vehicle and a storage medium, and the method comprises the steps: obtaining a first pressure change value and first starting time of a first pressure detection assembly, and a second pressure change value and second starting time of a second pressure detection assembly; determining a damage grade of the battery pack according to the first pressure change value and the second pressure change value, and determining a rubbing position coordinate of the battery pack according to the first starting time and the second starting time; and determining a damage result of the battery pack according to the damage grade and the rubbing position coordinates. Therefore, the problem that when the vehicle battery pack is impacted or scratched by sundries, accurate position sensing and damage evaluation cannot be carried out on the damage of the battery pack is solved, and the safety of the vehicle battery is improved.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to a battery pack damage assessment method, device, vehicle and storage medium. Background Art

[0002] The power battery is usually installed at the bottom of the vehicle body, and the bottom of the power battery occupies a relatively large area of ​​the bottom of the vehicle. During the driving of the vehicle, the bottom of the power battery may be scratched, collided, or hit. In serious cases, it may cause a short circuit in the internal components of the battery pack, or even fire and explosion, affecting the safety of the driver and passengers in the vehicle. In the related art, a thin film pressure sensor is generally set between the bottom of the battery module and the shell to detect the collision of the bottom of the battery pack.

[0003] However, this method is not only costly but also has low detection accuracy, which needs to be solved urgently. Summary of the invention

[0004] The present invention provides a battery pack damage assessment method, device, vehicle and storage medium to solve the problems of high cost and low detection accuracy of power battery bottom collision detection in related technologies, thereby improving the safety of vehicle batteries.

[0005] A first aspect of an embodiment of the present invention provides a battery pack damage assessment method, comprising the following steps: obtaining a first pressure change value and a first start-up time of the first pressure detection component, and a second pressure change value and a second start-up time of the second pressure detection component; determining a damage level of the battery pack according to the first pressure change value and the second pressure change value, and determining the scratch position coordinates of the battery pack according to the first start-up time and the second start-up time; determining a damage result of the battery pack according to the damage level and the scratch position coordinates.

[0006] Further, in some embodiments, determining the damage level of the battery pack based on the first pressure change value and the second pressure change value includes: judging whether the first pressure change value is higher than a minimum damage level threshold, or whether the second pressure change value is higher than the minimum damage level threshold; if the first pressure change value is higher than the minimum damage level threshold, or the second pressure change value is higher than the minimum damage level threshold, then determining the damage level of the battery pack based on the change interval of the larger value of the first pressure change value and the second pressure change value.

[0007] Further, in some embodiments, determining the scratch position coordinates of the battery pack based on the first start-up time and the second start-up time includes: determining a propagation speed of a pressure signal; calculating a difference between the first start-up time and the second start-up time, and determining the scratch position coordinates of the battery pack based on the difference and the propagation speed.

[0008] Furthermore, in some embodiments, after determining the damage result of the battery pack according to the damage level and the scratch location coordinates, it also includes: generating a damage reminder signal based on the damage result; sending the damage reminder signal to a preset mobile terminal, so as to provide a damage level reminder and / or a scratch location coordinate reminder through the preset mobile terminal.

[0009] Furthermore, in some embodiments, after determining the damage result of the battery pack according to the damage level and the scratch location coordinates, it also includes: judging whether the first pressure detection component and the second pressure detection component meet the preset reset conditions; if the first pressure detection component and the second pressure detection component meet the preset reset conditions, performing reset processing.

[0010] Furthermore, in some embodiments, the preset reset condition is: the first pressure change value and the second pressure change value are both lower than the minimum damage level threshold.

[0011] The battery pack damage assessment method provided in an embodiment of the present invention can calculate the position coordinates of a collision or scratch based on the startup time difference of the pressure detection component, and determine the intensity level of the collision or scratch based on the amplitude of the pressure change of the pressure detection component, thereby calculating the damage position and degree of the battery pack based on an algorithm, solving the problem of being unable to accurately perceive the position and assess the damage to the battery pack when the vehicle battery pack is impacted by debris or scratched, thereby improving the safety of the vehicle battery.

[0012] The second aspect of the present invention provides a battery pack damage evaluation device, including: an acquisition module, used to obtain a first pressure change value and a first start-up time of the first pressure detection component, and a second pressure change value and a second start-up time of the second pressure detection component. A judgment module, used to determine the damage level of the battery pack according to the first pressure change value and the second pressure change value, and determine the scratch position coordinates of the battery pack according to the first start-up time and the second start-up time. A generation module, used to determine the damage result of the battery pack according to the damage level and the scratch position coordinates.

[0013] Further, in some embodiments, the damage level of the battery pack is determined based on the first pressure change value and the second pressure change value, and the judgment module is specifically used to: judge whether the first pressure change value is higher than the minimum damage level threshold, or whether the second pressure change value is higher than the minimum damage level threshold; if the first pressure change value is higher than the minimum damage level threshold, or the second pressure change value is higher than the minimum damage level threshold, then determine the damage level of the battery pack based on the change interval of the larger value of the first pressure change value and the second pressure change value.

[0014] Furthermore, in some embodiments, the scratch position coordinates of the battery pack are determined based on the first start-up time and the second start-up time, and the judgment module is also used to: determine the propagation speed of the pressure signal; calculate the difference between the first start-up time and the second start-up time, and determine the scratch position coordinates of the battery pack based on the difference and the propagation speed.

[0015] Furthermore, in some embodiments, after determining the damage result of the battery pack according to the damage level and the scratch location coordinates, the generation module is also used to: generate a damage reminder signal based on the damage result; send the damage reminder signal to a preset mobile terminal to provide a damage level reminder and / or a scratch location coordinate reminder through the preset mobile terminal.

[0016] Furthermore, in some embodiments, after determining the damage result of the battery pack according to the damage level and the scratch location coordinates, the generation module is also used to: determine whether the first pressure detection component and the second pressure detection component meet the preset reset conditions; if the first pressure detection component and the second pressure detection component meet the preset reset conditions, perform reset processing.

[0017] The battery pack damage evaluation device provided in an embodiment of the present invention can calculate the position coordinates of a collision or scratch based on the startup time difference of the pressure detection component, and determine the intensity level of the collision or scratch based on the amplitude of the pressure change of the pressure detection component, thereby calculating the damage position and degree of the battery pack based on an algorithm, solving the problem of being unable to accurately perceive the position and evaluate the damage to the battery pack when the vehicle battery pack is impacted by debris or scratched, thereby improving the safety of the vehicle battery.

[0018] A third aspect of the present invention provides a vehicle, comprising: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, the instructions being configured to execute the battery pack damage assessment method as described in the above embodiment.

[0019] A fourth aspect of the present invention provides a computer-readable storage medium having a computer program stored thereon, the program being executed by a processor to implement the battery pack damage assessment method as described in the above embodiment.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0022] Figure 1 A flowchart of a battery pack damage assessment method provided according to an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of the structure of a battery pack damage sensing, evaluation and early warning system according to an embodiment of the present invention;

[0024] Figure 3 A schematic diagram of the structure of a perception module according to an embodiment of the present invention;

[0025] Figure 4 A schematic diagram of the structure of a decision module according to an embodiment of the present invention;

[0026] Figure 5 A schematic diagram of an integral value of a pressure sensor provided according to an embodiment of the present invention;

[0027] Figure 6 A schematic diagram of low-pass filtering processing according to an embodiment of the present invention;

[0028] Figure 7 A schematic diagram of a pressure variation curve provided according to an embodiment of the present invention;

[0029] Figure 8 A schematic diagram of the algorithm startup time difference according to an embodiment of the present invention;

[0030] Fig. 9 A schematic diagram of collision points provided according to an embodiment of the present invention;

[0031] Fig.10 A schematic diagram of the structure of an early warning module provided according to an embodiment of the present invention;

[0032] Fig.11 A schematic diagram of algorithm startup reset according to an embodiment of the present invention;

[0033] Fig.12A block diagram of a battery pack damage assessment device provided according to an embodiment of the present invention;

[0034] Fig.13 It is a schematic diagram of the structure of a vehicle provided according to an embodiment of the present invention. DETAILED DESCRIPTION

[0035] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0036] The following describes the battery pack damage assessment method, device, vehicle and storage medium of the embodiment of the present invention with reference to the accompanying drawings. In view of the problem mentioned in the above background technology that when the vehicle battery pack is impacted or scratched by debris, it is impossible to accurately perceive the position of the damage to the battery pack and assess the damage, the present invention provides a battery pack damage assessment method, in which the position coordinates of the collision or scratch can be calculated according to the start-up time difference of the pressure detection component, and the intensity level of the collision or scratch can be judged according to the amplitude of the pressure change of the pressure detection component, so as to calculate the damage position and degree of the battery pack based on the algorithm, which solves the problem that when the vehicle battery pack is impacted or scratched by debris, it is impossible to accurately perceive the position of the damage to the battery pack and assess the damage, etc.

[0037] Specifically, Figure 1 1 is a flow chart of a battery pack damage evaluation method provided by an embodiment of the present invention. In this embodiment, the battery pack damage evaluation method involves a battery pack damage perception, evaluation and early warning system structure as follows: Figure 2 The battery pack damage perception, evaluation and warning system structure includes multiple perception modules (such as pressure sensor 201 and pressure sensor 202), decision module 203 and warning module 204. Among them, the structure of the perception module of the embodiment of the present invention can be as follows Figure 3 As shown, the decision module of the embodiment of the present invention can be as follows Figure 4 shown.

[0038] Specifically, Figure 3As shown, pressure sensor 201 and pressure sensor 202 can be connected through a pressure tube. In order to sense the impact signal of the entire chassis area, the pressure tube is arranged in a serpentine shape to cover the entire chassis area. Two pressure sensors are arranged at two vertices of the chassis for sensing. The battery pack damage evaluation algorithm is used to calculate the damage degree and damage location of the battery pack, which improves the accuracy of damage identification after the power battery system is supported, and maximizes the accurate evaluation of the damage degree and damage location. Secondly, pressure sensor 201 and pressure sensor 202 are connected to decision module 203, and decision module 203 is connected to early warning module 204. The intensity level of the collision or scratch is determined according to the amplitude of the pressure change of the pressure detection component.

[0039] Furthermore, if Figure 4 As shown in the figure, the decision module includes a state control submodule, a signal preprocessing submodule and an early warning control submodule. Among them, the state control submodule is responsible for controlling the start-up of the pressure detection component and resetting the algorithm, the signal preprocessing submodule is responsible for filtering the pressure signal, calculating the sensor start-up time difference and the pressure change value, and the early warning control submodule mainly includes the collision or scratch intensity and position judgment function.

[0040] like Figure 1 As shown, the battery pack damage evaluation method includes the following steps:

[0041] In step S101, a first pressure change value and a first start-up time of a first pressure detection component, and a second pressure change value and a second start-up time of a second pressure detection component are acquired.

[0042] Among them, the first pressure detection component and the second pressure detection component can be two pressure sensors (i.e., a left front pressure sensor and a right rear pressure sensor), which are responsible for collecting pressure signals. Taking the front direction of the vehicle as the front, the first pressure change value can be the difference between the current pressure value and the initial pressure value of the left front pressure sensor, and the second pressure change value can be the difference between the current pressure value and the initial pressure value of the right rear pressure sensor; the first pressure change value can also be the difference between the current pressure value and the initial pressure value of the right rear pressure sensor, and the second pressure change value can be the difference between the current pressure value and the initial pressure value of the left front pressure sensor. The first start-up time can be the time difference between the start-up time of the left front pressure sensor algorithm and the initial time, and the second start-up time can be the time difference between the start-up time of the right rear pressure sensor algorithm and the initial time. Similarly, the first start-up time can also be the time difference between the start-up time of the right rear pressure sensor algorithm and the initial time, and the second start-up time can also be the time difference between the start-up time of the left front pressure sensor algorithm and the initial time.

[0043] It should be understood that if the battery pack is damaged or broken, the pressure signals of the first pressure detection component and the second pressure detection component will change to a certain extent. Therefore, in the embodiment of the present invention, the pressure signal of the first pressure detection component can be obtained and the first pressure change value can be obtained by integrating the pressure signal. Similarly, the second pressure change value can also be obtained by integrating the pressure signal of the second pressure detection component. Figure 5 As shown, Figure 5 (a) is a schematic diagram of the pressure signal of the pressure detection component changing with time. Figure 5 (b) is a schematic diagram of the pressure signal integration according to the pressure detection component; in addition, the first start time and the second start time can be obtained by timing with a timer or by other methods, which will not be described in detail here to avoid redundancy.

[0044] It should be noted that since the acquired pressure signal (the first pressure change value and the second pressure change value obtained after processing) will have certain high-frequency noise, the embodiment of the present invention can also perform low-pass filtering after acquiring the pressure signal to remove the high-frequency noise in the pressure signal, wherein, Figure 6 As shown, Figure 6 is a schematic diagram of a low-pass filtering process according to an embodiment of the present invention. Figure 6 The method shown is used to remove high-frequency noise from the signal.

[0045] Thus, the pressure signal and the start-up time of the corresponding pressure detection component can be acquired through the pressure detection component, and the integral of the pressure signal can be calculated through filtering processing to obtain the pressure change value of the corresponding pressure detection component.

[0046] In step S102, the damage level of the battery pack is determined according to the first pressure change value and the second pressure change value, and the scratch position coordinates of the battery pack are determined according to the first startup time and the second startup time.

[0047] It should be understood that in order to more accurately evaluate the damage of the battery pack, the embodiment of the present invention can determine the damage level of the battery pack according to the first pressure change value and the second pressure change value, and determine the scratch position coordinates of the battery pack according to the first startup time and the second startup time.

[0048] First, a specific example is used to explain in detail how to determine the damage level of the battery pack based on the first pressure change value and the second pressure change value. As a possible implementation method, in some embodiments, the damage level of the battery pack is determined based on the first pressure change value and the second pressure change value, including: judging whether the first pressure change value is higher than the minimum damage level threshold, or whether the second pressure change value is higher than the minimum damage level threshold; if the first pressure change value is higher than the minimum damage level threshold, or the second pressure change value is higher than the minimum damage level threshold, then determining the damage level of the battery pack based on the change interval in which the larger of the first pressure change value and the second pressure change value is located. Specifically, an embodiment of the present invention can set multiple thresholds based on the pressure change curve, so as to determine the damage level of the battery pack based on the threshold interval in which the pressure change curve is located. Figure 7 As shown, Figure 7 A schematic diagram of a pressure change curve provided in an embodiment of the present invention, wherein threshold 1, threshold 2 and threshold 3 are multiple preset thresholds, wherein, assuming that the first pressure change value is the pressure change value of the left front pressure detection component, and the second pressure change value is the pressure change value of the right rear pressure detection component, then Figure 7 (a) is a schematic diagram of the first pressure change value and the corresponding damage level threshold, Figure 7 (b) is a schematic diagram of the second pressure change value and the corresponding damage level threshold.

[0049] Among them, the larger the threshold, the stronger the intensity level of the collision or scratch, and the number of levels can be increased or decreased according to demand. As long as one of the amplitudes of the pressure signals of the left front and right rear pressure detection components is higher than the intensity level threshold, the intensity warning of that level will be set. For example, if the amplitude of the right rear pressure detection component is higher than that of the left front pressure detection component, and the amplitude of the right rear pressure detection component is higher than threshold 2, and the amplitude of the left front pressure detection component is higher than threshold 1, then the intensity level at this time is the intensity level corresponding to the right rear pressure sensor.

[0050] Furthermore, a specific example is used to explain in detail how to determine the scratch position coordinates of the battery pack according to the first startup time and the second startup time. As a possible implementation method, in some embodiments, determining the scratch position coordinates of the battery pack according to the first startup time and the second startup time includes: determining the propagation speed of the pressure signal; calculating the difference between the first startup time and the second startup time, and determining the scratch position coordinates of the battery pack according to the difference and the propagation speed.

[0051] Specifically, Figure 8 and Fig. 9 As shown, Figure 8 This is a schematic diagram of the algorithm startup time difference according to an embodiment of the present invention. Fig. 9This is a schematic diagram of the collision points of a specific embodiment of the present invention, wherein A, B, and C are different collision points. Assuming that the length of the pressure tube is L mm, the first start-up time is the start-up time T01 of the left front pressure detection component, and the second start-up time is the start-up time T11 of the right rear pressure detection component, then the difference between the first start-up time and the second start-up time is Delta T1=T11-T01. After obtaining the difference Delta T1 between the first start-up time and the second start-up time, the embodiment of the present invention can determine the position coordinates of the collision or scratch according to the propagation speed of the pressure wave in the air.

[0052] For example, taking collision point A as an example, let the coordinates of collision point A be X a mm, the propagation speed of the pressure signal in the pressure pipe is V0=340m / s, the first start time is T01, and the second start time is T11, from which it can be calculated:

[0053] Delta T1=T11-T01 (1)

[0054] Ds(1)=X a =V0*Delta T1 (2)

[0055] Assuming that the coordinate of the left front pressure detection component is 0, the coordinate of collision point A can be calculated as Ds(1) according to the difference between the first start time and the second start time and the pressure signal propagation speed. Similarly, the coordinates of collision points B (the first start time is T02 and the second start time is T12) and C (the first start time is T03 and the second start time is T13) can be calculated:

[0056] Delta T2=T12-T02 (3)

[0057] Ds(2)=X b =V0*Delta T2 (4)

[0058] Delta T3=T13-T03 (5)

[0059] Ds(3)=X c =V0*Delta T3 (6)

[0060] Therefore, the embodiment of the present invention can determine the damage level of the battery pack according to the first pressure change value and the second pressure change value, and determine the scratch position coordinates of the battery pack according to the first startup time and the second startup time, and then the relevant intensity level and collision or scratch position coordinates can be transmitted to the cockpit domain controller, so as to more accurately evaluate the damage to the battery pack.

[0061] In step S103, the damage result of the battery pack is determined according to the damage level and the scratch position coordinates.

[0062] The embodiment of the present invention can pre-set the damage situation corresponding to the damage level, for example, damage level I is minor damage, damage level II is mild damage, damage level III is moderate damage, damage level IV is severe damage, etc.

[0063] It should be understood that the damage result may include the damage level, the damage situation corresponding to the damage level and the scratch location. For example, the damage result is that location A is scratched, the damage level is level II, and location A is slightly damaged. For another example, the damage result is that location B is hit, the damage level is level IV, and location B is seriously damaged.

[0064] Therefore, the embodiment of the present invention can determine the damage result of the battery pack according to the damage level and the scratch location coordinates, so as to accurately judge the damage condition of the battery pack and facilitate the repair of the vehicle battery pack.

[0065] Furthermore, in order for the driver to know the current damage of the battery pack in time, the embodiment of the present invention can remind the user after determining the damage result of the battery pack. As a possible implementation method, in some embodiments, after determining the damage result of the battery pack according to the damage level and the scratch position coordinates, it also includes: generating a damage reminder signal based on the damage result; sending the damage reminder signal to a preset mobile terminal, so as to remind the damage level and / or the scratch position coordinates through the preset mobile terminal.

[0066] The generated damage warning signal includes damage coordinates and damage level information. The damage warning signal is transmitted to the warning module, and the warning module reminds the driver of the damage coordinates and damage level. For example, Fig.10 A schematic diagram of the structure of an early warning module provided by an embodiment of the present invention is shown in FIG. Fig.10 As shown, the preset mobile terminal in the early warning module can be the main driving instrument screen, the central control screen, the second row high-definition screen and the owner's personal mobile phone. The damage coordinates and damage level information are sent to the instrument screen, the central control screen, the second row high-definition screen and the owner's personal mobile phone, and displayed on the instrument screen, the central control screen, the second row high-definition screen and the owner's personal mobile phone to achieve early warning reminders. At the same time, the instrument screen, the central control screen, the second row high-definition screen and the owner's personal mobile phone can add a screen flashing reminder function when receiving a damage reminder signal, or add a buzzer to realize a sound alarm, so as to realize the reminder function.

[0067] Furthermore, in some embodiments, after determining the damage result of the battery pack according to the damage level and the scratch location coordinates, it also includes: judging whether the first pressure detection component and the second pressure detection component meet the preset reset conditions; if the first pressure detection component and the second pressure detection component meet the preset reset conditions, performing reset processing.

[0068] It should be noted that after the battery pack is damaged and returned to the factory for repair, the pressure sensor needs to be reset so that the pressure detection component can operate normally during subsequent vehicle driving and accurately detect pressure changes.

[0069] In some embodiments, the preset reset condition is: the first pressure change value and the second pressure change value are both lower than the minimum damage level threshold.

[0070] Specifically, if Fig.11 As shown, as long as one of the pressure detection component signals has an amplitude higher than the algorithm start threshold, the algorithm will be triggered to start. When both pressure detection component signals are lower than the algorithm start threshold, the pressure detection component algorithm will be reset.

[0071] Therefore, the embodiment of the present invention can reset the pressure detection component algorithm when the first pressure detection component and the first pressure change value and the second pressure change value of the first pressure detection component are both lower than the minimum damage level threshold, thereby ensuring that the pressure detection component can work normally during subsequent vehicle driving after the battery pack is damaged and repaired.

[0072] The battery pack damage assessment method provided in an embodiment of the present invention can calculate the position coordinates of a collision or scratch based on the startup time difference of the pressure detection component, and determine the intensity level of the collision or scratch based on the amplitude of the pressure change of the pressure detection component, thereby calculating the damage position and degree of the battery pack based on an algorithm, solving the problem of being unable to accurately perceive the position and assess the damage to the battery pack when the vehicle battery pack is impacted by debris or scratched, thereby improving the safety of the vehicle battery.

[0073] Next, the battery pack damage evaluation device proposed according to an embodiment of the present invention will be described with reference to the accompanying drawings.

[0074] Fig.12 It is a block diagram of a battery pack damage evaluation device according to an embodiment of the present invention.

[0075] like Fig.12 As shown, the battery pack damage evaluation device 10 includes: an acquisition module 100, a judgment module 200 and a generation module 300.

[0076] Among them, the acquisition module 100 is used to obtain the first pressure change value and the first start-up time of the first pressure detection component, and the second pressure change value and the second start-up time of the second pressure detection component. The judgment module 200 is used to determine the damage level of the battery pack according to the first pressure change value and the second pressure change value, and determine the scratch position coordinates of the battery pack according to the first start-up time and the second start-up time. The generation module 300 is used to determine the damage result of the battery pack according to the damage level and the scratch position coordinates.

[0077] Further, in some embodiments, the judgment module 200 is specifically used to: judge whether the first pressure change value is higher than the minimum damage level threshold, or whether the second pressure change value is higher than the minimum damage level threshold; if the first pressure change value is higher than the minimum damage level threshold, or the second pressure change value is higher than the minimum damage level threshold, then determine the damage level of the battery pack according to the change interval of the larger value of the first pressure change value and the second pressure change value.

[0078] Furthermore, in some embodiments, the judgment module 200 is also used to: determine the propagation speed of the pressure signal; calculate the difference between the first start-up time and the second start-up time, and determine the scratch position coordinates of the battery pack based on the difference and the propagation speed.

[0079] Furthermore, in some embodiments, after determining the damage result of the battery pack according to the damage level and the scratch location coordinates, the generation module 300 is also used to: generate a damage reminder signal based on the damage result; send the damage reminder signal to a preset mobile terminal to provide a damage level reminder and / or a scratch location coordinate reminder through the preset mobile terminal.

[0080] Furthermore, in some embodiments, after determining the damage result of the battery pack according to the damage level and the scratch location coordinates, the generation module 300 is also used to: determine whether the first pressure detection component and the second pressure detection component meet the preset reset conditions; if the first pressure detection component and the second pressure detection component meet the preset reset conditions, reset processing is performed.

[0081] It should be noted that the aforementioned explanation of the embodiment of the battery pack damage evaluation method is also applicable to the battery pack damage evaluation device of this embodiment, and will not be repeated here.

[0082] The battery pack damage evaluation device provided in an embodiment of the present invention can calculate the position coordinates of a collision or scratch based on the startup time difference of the pressure detection component, and determine the intensity level of the collision or scratch based on the amplitude of the pressure change of the pressure detection component, thereby calculating the damage position and degree of the battery pack based on an algorithm, solving the problem of being unable to accurately perceive the position and evaluate the damage to the battery pack when the vehicle battery pack is impacted by debris or scratched, thereby improving the safety of the vehicle battery.

[0083] Fig.13 A schematic diagram of the structure of a vehicle provided in an embodiment of the present invention. The vehicle may include:

[0084] A memory 1301 , a processor 1302 , and a computer program stored in the memory 1301 and executable on the processor 1302 .

[0085] When the processor 1302 executes the program, the battery pack damage assessment method provided in the above embodiment is implemented.

[0086] Furthermore, the vehicle also includes:

[0087] The communication interface 1303 is used for communication between the memory 1301 and the processor 1302 .

[0088] The memory 1301 is used to store computer programs that can be executed on the processor 1302 .

[0089] The memory 1301 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

[0090] If the memory 1301, the processor 1302 and the communication interface 1303 are implemented independently, the communication interface 1303, the memory 1301 and the processor 1302 can be connected to each other through a bus and communicate with each other. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component (PCI) bus or an Extended Industry Standard Architecture (EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Fig.13 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0091] Optionally, in a specific implementation, if the memory 1301, the processor 1302 and the communication interface 1303 are integrated on a chip, the memory 1301, the processor 1302 and the communication interface 1303 can communicate with each other through an internal interface.

[0092] The processor 1302 may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present invention.

[0093] This embodiment also provides a computer-readable storage medium on which a computer program is stored, characterized in that when the program is executed by a processor, the above-mentioned battery pack damage evaluation method is implemented.

[0094] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or N embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0095] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "N" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0096] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present invention belong.

[0097] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above embodiment, the N steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0098] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

Claims

1. A battery pack damage assessment method, characterized in that: The vehicle chassis is equipped with a first pressure detection assembly and a second detection assembly, wherein the method comprises the following steps: Acquire a first pressure change value and a first start-up time of the first pressure detection component, and a second pressure change value and a second start-up time of the second pressure detection component; Determine a damage level of the battery pack according to the first pressure change value and the second pressure change value, and determine the coordinates of a scratch position of the battery pack according to the first startup time and the second startup time; The damage result of the battery pack is determined according to the damage level and the scratch location coordinates.

2. The method according to claim 1, characterized in that The determining the damage level of the battery pack according to the first pressure change value and the second pressure change value includes: Determining whether the first pressure change value is higher than a minimum damage level threshold, or whether the second pressure change value is higher than a minimum damage level threshold; If the first pressure change value is higher than the minimum damage level threshold, or the second pressure change value is higher than the minimum damage level threshold, the damage level of the battery pack is determined based on the change interval of the larger value of the first pressure change value and the second pressure change value.

3. The method according to claim 1, characterized in that The determining the scratch position coordinates of the battery pack according to the first startup time and the second startup time includes: Determine the propagation speed of the pressure signal; The difference between the first startup time and the second startup time is calculated, and the coordinates of the scratch position of the battery pack are determined according to the difference and the propagation speed.

4. The method according to claim 1, characterized in that: After determining the damage result of the battery pack according to the damage level and the scratch position coordinates, the method further includes: Based on the damage result, generating a damage reminder signal; The damage reminder signal is sent to a preset mobile terminal so as to provide a damage level reminder and / or a scratch location coordinate reminder through the preset mobile terminal.

5. The method according to claim 2, characterized in that: After determining the damage result of the battery pack according to the damage level and the scratch position coordinates, the method further includes: Determining whether the first pressure detection component and the second pressure detection component meet a preset reset condition; If the first pressure detection component and the second pressure detection component meet the preset reset condition, a reset process is performed.

6. The method according to claim 5, characterized in that The preset reset condition is: The first pressure change value and the second pressure change value are both lower than the minimum damage level threshold.

7. A battery pack damage assessment device, characterized in that: The device comprises: An acquisition module, used for acquiring a first pressure change value and a first start-up time of the first pressure detection component, and a second pressure change value and a second start-up time of the second pressure detection component; a judgment module, configured to determine a damage level of the battery pack according to the first pressure change value and the second pressure change value, and determine a scratch position coordinate of the battery pack according to the first startup time and the second startup time; A generation module is used to determine the damage result of the battery pack according to the damage level and the scratch position coordinates.

8. The device according to claim 7, characterized in that The damage level of the battery pack is determined according to the first pressure change value and the second pressure change value, and the judgment module is specifically used for: Determining whether the first pressure change value is higher than a minimum damage level threshold, or whether the second pressure change value is higher than a minimum damage level threshold; If the first pressure change value is higher than the minimum damage level threshold, or the second pressure change value is higher than the minimum damage level threshold, the damage level of the battery pack is determined based on the change interval of the larger value of the first pressure change value and the second pressure change value.

9. A vehicle, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the battery pack damage assessment method as described in any one of claims 1 to 6.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: The program is executed by a processor to implement the battery pack damage assessment method as described in any one of claims 1-6.

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