Lithium battery fault test method, device and equipment, readable storage medium and product

Abstract

The invention relates to a lithium battery fault test method, device and equipment, a readable storage medium and a product. The method comprises the following steps: acquiring a mounting position of a lithium battery to be detected in a vehicle; determining fault test environment data corresponding to the lithium battery to be tested according to the installation position; wherein the fault test environment data comprises at least one of frequency data, temperature data and current data; based on the fault test environment data, performing fault test on the to-be-tested lithium battery; and determining a target battery state of the to-be-tested lithium battery according to the battery function parameters of the to-be-tested lithium battery in the corresponding fault test environment. By adopting the method, the reliability of lithium battery fault testing can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of highly accelerated life testing, and in particular to a lithium battery fault testing method, device, equipment, readable storage medium and product. Background Art

[0002] Highly accelerated life testing can be used to assist in completing the design process, improve product design maturity, shorten the design test cycle, and allow products to meet mature design requirements during the design phase, ensuring that high-reliability and high-quality products are quickly delivered to the market for use.

[0003] This test method originated abroad and is widely used in the development of electronic products. Lithium batteries have a large market share in the automotive field, and the failure prediction of lithium batteries plays a vital role in the normal operation of the car. However, in traditional technology, the failure test method for lithium batteries is not perfect. Summary of the invention

[0004] Based on this, it is necessary to provide a lithium battery fault testing method, device, equipment, readable storage medium and product to address the above technical problems, which can improve the reliability of lithium battery fault testing.

[0005] In a first aspect, the present application provides a lithium battery fault testing method, comprising:

[0006] Obtain the installation position of the lithium battery to be tested in the vehicle;

[0007] Determine the fault test environment data corresponding to the lithium battery to be tested according to the installation position; wherein the fault test environment data includes at least one of frequency data, temperature data and current data;

[0008] Based on the fault test environment data, a fault test is performed on the lithium battery to be tested;

[0009] The target battery state of the lithium battery to be tested is determined according to the battery function parameters of the lithium battery to be tested under the corresponding fault test environment.

[0010] In one embodiment, if the fault test environment data includes frequency data, a fault test is performed on the lithium battery to be tested based on the fault test environment data, including:

[0011] Obtain power spectrum density data corresponding to different frequency data;

[0012] For any frequency data, determine the power spectrum density data corresponding to the frequency data;

[0013] Based on different frequency data and the power spectrum density data corresponding to each frequency data, a fault test is performed on the lithium battery to be tested.

[0014] In one embodiment, if the fault test environment data includes temperature data and current data, a fault test is performed on the lithium battery to be tested based on the fault test environment data, including:

[0015] Obtain the charge and discharge intervals corresponding to the battery under test under different temperature data;

[0016] For any temperature data, according to the charge and discharge interval corresponding to the temperature data, determine the current data corresponding to the temperature data;

[0017] Based on different temperature data and current data corresponding to each temperature data, a fault test is performed on the lithium battery to be tested.

[0018] In one embodiment, determining a target battery state of the lithium battery to be tested according to battery function parameters of the lithium battery to be tested under a corresponding fault test environment includes:

[0019] Determine the initial battery state of the lithium battery to be tested according to the battery function parameters of the lithium battery to be tested under the corresponding fault test environment;

[0020] When the initial battery state indicates that the lithium battery to be tested is normal, a target battery state of the lithium battery to be tested is determined according to the battery safety parameters of the lithium battery to be tested.

[0021] In one embodiment, the battery function parameters include battery temperature, battery current and battery voltage; accordingly, determining the initial battery state of the lithium battery to be tested according to the battery function parameters of the lithium battery to be tested under the corresponding fault test environment includes:

[0022] If the lithium battery to be tested meets any of the following conditions, the initial battery state of the lithium battery to be tested is determined to be a fault state:

[0023] The battery temperature of the lithium battery under test exceeds the preset safety temperature in any fault test environment;

[0024] The battery current of the lithium battery under test exceeds the preset safety current under any fault test environment;

[0025] The battery voltage of the lithium battery under test exceeds the preset safety voltage under any fault test environment.

[0026] In one embodiment, determining the fault test environment data corresponding to the lithium battery to be tested according to the installation position includes:

[0027] Based on the preset mapping relationship, the reference environment data corresponding to the installation position in the preset mapping relationship is used as the fault test environment data corresponding to the lithium battery to be tested.

[0028] In a second aspect, the present application also provides a lithium battery fault testing device, comprising:

[0029] A position acquisition module is used to obtain the installation position of the lithium battery to be tested in the vehicle;

[0030] A data determination module, used to determine the fault test environment data corresponding to the lithium battery to be tested according to the installation position; wherein the fault test environment data includes at least one of frequency data, temperature data and current data;

[0031] A battery test module, used to perform a fault test on the lithium battery to be tested based on the fault test environment data;

[0032] The battery status determination module is used to determine the target battery status of the lithium battery to be tested according to the battery function parameters of the lithium battery to be tested under the corresponding fault test environment.

[0033] In a third aspect, the present application further provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the following steps are implemented:

[0034] Obtain the installation position of the lithium battery to be tested in the vehicle;

[0035] Determine the fault test environment data corresponding to the lithium battery to be tested according to the installation position; wherein the fault test environment data includes at least one of frequency data, temperature data and current data;

[0036] Based on the fault test environment data, a fault test is performed on the lithium battery to be tested;

[0037] The target battery state of the lithium battery to be tested is determined according to the battery function parameters of the lithium battery to be tested under the corresponding fault test environment.

[0038] In a fourth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the following steps are implemented:

[0039] Obtain the installation position of the lithium battery to be tested in the vehicle;

[0040] Determine the fault test environment data corresponding to the lithium battery to be tested according to the installation position; wherein the fault test environment data includes at least one of frequency data, temperature data and current data;

[0041] Based on the fault test environment data, a fault test is performed on the lithium battery to be tested;

[0042] The target battery state of the lithium battery to be tested is determined according to the battery function parameters of the lithium battery to be tested under the corresponding fault test environment.

[0043] In a fifth aspect, the present application further provides a computer program product, including a computer program, which implements the following steps when executed by a processor:

[0044] Obtain the installation position of the lithium battery to be tested in the vehicle;

[0045] Determine the fault test environment data corresponding to the lithium battery to be tested according to the installation position; wherein the fault test environment data includes at least one of frequency data, temperature data and current data;

[0046] Based on the fault test environment data, a fault test is performed on the lithium battery to be tested;

[0047] The target battery state of the lithium battery to be tested is determined according to the battery function parameters of the lithium battery to be tested under the corresponding fault test environment.

[0048] The above-mentioned lithium battery fault testing method, device, equipment, readable storage medium and product determine the fault test environment data corresponding to the lithium battery to be tested at different installation positions in the vehicle, and then perform a fault test on the lithium battery to be tested based on the fault test environment data. After the test of the lithium battery to be tested is completed, the target battery state of the lithium battery to be tested is determined according to the battery function parameters of the lithium battery to be tested under the corresponding fault test environment, thereby completing the fault test of the lithium battery fault. In the above process, the lithium batteries to be tested at different installation positions correspond to different fault test environment data, which can improve the rigor of the fault test. Furthermore, after the test is completed, the target battery state of the lithium battery to be tested is determined according to the performance of the lithium battery to be tested during the test, which can improve the accuracy of the target battery state. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0050] Figure 1 A schematic diagram of a lithium battery failure testing method according to an embodiment of the present invention;

[0051] Figure 2 A schematic diagram of a flow chart of a fault testing step in an embodiment;

[0052] Figure 3 is a flowchart of a fault testing step in another embodiment;

[0053] Figure 4A schematic diagram of a process for determining a target battery state in one embodiment;

[0054] Figure 5 is a structural block diagram of a lithium battery fault testing device in one embodiment;

[0055] Figure 6 FIG. 4 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0057] In one embodiment, Figure 1 As shown, a lithium battery fault testing method is provided. This embodiment uses the method applied to a terminal as an example for illustration. It can be understood that the method can also be applied to a server, and can also be applied to a system including a terminal and a server, and is implemented through the interaction between the terminal and the server. In this embodiment, the method includes the following steps:

[0058] S110, obtaining the installation position of the lithium battery to be tested in the vehicle.

[0059] The lithium battery to be tested can be various types of lithium batteries, for example, it can be a lithium battery installed on a vehicle, or it can be a lithium battery installed on an electric bicycle. There are many types of lithium batteries to be tested. In this embodiment, a 12V lithium battery installed on a vehicle is mainly used as an example for description.

[0060] It is understandable that, when the lithium battery to be tested has not been shipped out of the factory, the preset installation position of each lithium battery to be tested can be predetermined. The preset installation position of each lithium battery to be tested can be determined based on manual experience, or can be determined according to the factory delivery time of each lithium battery to be tested, or can be determined according to the design requirements of the vehicle, and this application does not impose any limitation on this.

[0061] For example, when the number of lithium batteries to be tested is not unique, the installation position corresponding to each lithium battery to be tested can be predetermined, for example, a lithium battery installation position comparison table can be predetermined. For any lithium battery to be tested, the installation position corresponding to the lithium battery in the comparison table is used as the installation position of the lithium battery to be tested in the vehicle.

[0062] S120, determining fault test environment data corresponding to the lithium battery to be tested according to the installation position.

[0063] The fault test environment data includes at least one of frequency data, temperature data and current data.

[0064] Optionally, the frequency data can be selected from a broadband random vibration spectrum, for example, 5~2000Hz, acceleration 30.8m / s 2 , 8h in each axis, three axes ZYX, to design the vibration stress curve. The temperature data can be determined according to the high and low temperature working limit temperature of the lithium battery to be tested. For example, the temperature data is usually -40℃~60℃.

[0065] Optionally, different fault test environment data correspond to the lithium batteries to be tested in different installation positions. By way of example, in this embodiment, a preset mapping relationship between the installation position and the fault test environment data can be determined based on manual experience. Based on the preset mapping relationship, the reference environment data corresponding to the installation position in the preset mapping relationship is used as the fault test environment data corresponding to the lithium battery to be tested.

[0066] S130, performing a fault test on the lithium battery to be tested based on the fault test environment data.

[0067] Illustratively, in this embodiment, multiple fault tests may be designed, each fault test corresponds to a piece of fault test environment data, and the lithium battery to be tested is sequentially placed in each fault test environment data to perform a fault test on the lithium battery to be tested.

[0068] It should be noted that each fault test environment data has a corresponding test duration. Exemplarily, the test duration can be set according to the attributes of the fault test environment data, for example, the test duration corresponding to the extreme test environment data is set to a longer time, and the test duration corresponding to the conventional test environment data is set to a shorter time. The test duration can also be set according to manual experience, for example, the duration corresponding to each fault test environment data is set to the same duration, and this application does not impose any limitation on this.

[0069] S140, determining a target battery state of the lithium battery to be tested according to the battery function parameters of the lithium battery to be tested under a corresponding fault test environment.

[0070] The battery function parameters may include parameters such as battery temperature, current and voltage. The target battery status can indicate whether the lithium battery to be tested is in a fault state.

[0071] Exemplarily, for any fault test environment, when the fault test in the fault test environment is completed, the battery function parameters of the lithium battery to be tested are detected to determine the target battery state of the lithium battery to be tested.

[0072] Optionally, the battery function parameters of the lithium battery to be tested under the fault test environment can be input into a pre-trained battery state determination model to obtain the target battery state of the lithium battery to be tested. Among them, the battery state determination model can be constructed based on a common neural network, which will not be described in detail here. Furthermore, in the process of training the battery state determination model, the sample function parameters corresponding to the sample battery can be input into the battery state determination model to obtain the battery state prediction results output by the battery state determination model. According to the battery state prediction results and the battery state labels corresponding to the corresponding sample batteries, the model parameters of the battery state determination model are adjusted to improve the model accuracy of the battery state determination model.

[0073] In the above-mentioned lithium battery fault testing method, for the lithium batteries to be tested at different installation positions in the vehicle, the fault test environment data corresponding to the corresponding lithium batteries to be tested are determined, and then the lithium batteries to be tested are fault tested based on the fault test environment data. After the test of the lithium battery to be tested is completed, the target battery state of the lithium battery to be tested is determined according to the battery function parameters of the lithium battery to be tested under the corresponding fault test environment, thereby completing the fault test of the lithium battery fault. In the above process, the lithium batteries to be tested at different installation positions correspond to different fault test environment data, which can improve the rigor of the fault test. Furthermore, after the test is completed, the target battery state of the lithium battery to be tested is determined according to the performance of the lithium battery to be tested during the test, which can improve the accuracy of the target battery state.

[0074] Based on the technical solutions of the above embodiments, the present application also provides an optional embodiment. In this optional embodiment, when the fault test environment data includes frequency data, the process of performing a fault test on the lithium battery to be tested based on the fault test environment data is described in detail.

[0075] See also Figure 2 The fault test steps shown include:

[0076] S210, obtaining power spectrum density data corresponding to different frequency data.

[0077] Exemplarily, in this embodiment, different frequency data correspond to different power spectrum density data. Optionally, a comparison table of frequency data and power spectrum density data can be determined in advance, and the power spectrum density data corresponding to the frequency data in the comparison table can be used as the power spectrum density data corresponding to the corresponding frequency data.

[0078] S220: For any frequency data, determine power spectrum density data corresponding to the frequency data.

[0079] Exemplarily, in this embodiment, the power spectrum density data corresponding to different frequency data may be shown in the following Table 1:

[0080] Table 1: Frequency data and power spectrum density data comparison table

[0081]

[0082] S230, performing a fault test on the lithium battery to be tested based on the different frequency data and the power spectrum density data corresponding to each frequency data.

[0083] For example, in this embodiment, the lithium battery to be tested can be placed in an environment with different frequency data and power spectrum density data corresponding to the corresponding frequency data to perform a fault test on the lithium battery to be tested. It should be noted that for any fault test environment data, this embodiment can place the lithium battery to be tested in the corresponding environment for a preset time, for example, one hour.

[0084] In the above embodiment, when the fault test environment data includes frequency data, the process of performing a fault test on the lithium battery to be tested is described in detail based on the fault test environment data. Specifically, the fault test environment data includes not only frequency data, but also power spectrum density data corresponding to the frequency data, so that the fault test of the lithium battery is more rigorous.

[0085] Based on the technical solutions of the above embodiments, the present application also provides an optional embodiment. In this optional embodiment, when the fault test environment data includes temperature data and current data, the process of performing a fault test on the lithium battery to be tested based on the fault test environment data is described in detail.

[0086] See also Figure 3 The fault test steps shown include:

[0087] S310, obtaining the charge and discharge intervals corresponding to the storage battery to be tested under different temperature data.

[0088] It should be noted that, in this embodiment, the lithium battery has different charge and discharge capabilities under different temperature data.

[0089] Exemplarily, a comparison table between temperature data and charge and discharge intervals may be predetermined, and the charge and discharge intervals corresponding to different temperature data in the comparison table are used as the charge and discharge intervals corresponding to the battery under different temperature data.

[0090] Optionally, in this embodiment, the temperature data can also be input into a pre-trained charge and discharge interval determination model to obtain the charge and discharge interval corresponding to the battery to be tested under different temperature data. Among them, the charge and discharge interval determination model can be constructed by a common neural network model, which is not described in detail here. In the process of training the charge and discharge interval determination model, the sample temperature data can be input into the charge and discharge interval determination model to obtain the charge and discharge interval prediction result. According to the charge and discharge interval prediction result and the charge and discharge interval label corresponding to the corresponding sample temperature data, the model parameters of the charge and discharge interval determination model are trained to improve the model accuracy of the charge and discharge determination model.

[0091] S320 , for any temperature data, according to the charge and discharge interval corresponding to the temperature data, determining the current data corresponding to the temperature data.

[0092] In this embodiment, different charge and discharge intervals correspond to different current data. In this embodiment, the current data corresponding to the charge and discharge interval can be used as the current data corresponding to the corresponding temperature data.

[0093] S330, performing a fault test on the lithium battery to be tested based on the different temperature data and the current data corresponding to each temperature data.

[0094] For example, in this embodiment, the lithium battery to be tested can be placed in an environment corresponding to different temperature data, and the current data corresponding to the corresponding temperature data can be output to perform a fault test on the lithium battery to be tested. It should be noted that for any temperature data, the lithium battery to be tested can be placed in the corresponding environment for a preset time, for example, one hour.

[0095] Optionally, in this embodiment, different placement times may be set for different temperature data, and the temperature data and the corresponding placement times may be shown in the following Table 2:

[0096] Table 2: Comparison table between temperature and storage time

[0097]

[0098] In the above embodiment, when the fault test environment data includes temperature data and current data, the process of performing a fault test on the lithium battery to be tested is described in detail based on the fault test environment data, so that the fault test on the lithium battery is more rigorous.

[0099] It should be noted that, in another optional embodiment, the fault test environment data may also include only temperature data, or only current data.

[0100] Based on the technical solutions of the above embodiments, the present application also provides an optional embodiment. In this optional embodiment, the process of determining the target battery state of the lithium battery to be tested according to the battery function parameters of the lithium battery to be tested under the corresponding fault test environment is described in detail.

[0101] See also Figure 4 The target battery state determination steps shown include:

[0102] S410, determining an initial battery state of the lithium battery to be tested according to battery function parameters of the lithium battery to be tested under a corresponding fault test environment.

[0103] Exemplarily, in this embodiment, the battery function parameters include battery temperature, battery current and battery voltage. Accordingly, if the lithium battery to be tested meets any one of the following conditions, the initial battery state of the lithium battery to be tested is determined to be a fault state: the battery temperature of the lithium battery to be tested exceeds the preset safety temperature under any fault test environment; the battery current of the lithium battery to be tested exceeds the preset safety current under any fault test environment; the battery voltage of the lithium battery to be tested exceeds the preset safety voltage under any fault test environment.

[0104] Among them, the preset safety temperature, preset safety current and preset safety voltage can be determined based on manual experience or through a large number of experiments, and this application does not impose any limitations on this.

[0105] It can be understood that in this embodiment, when the battery temperature of the lithium battery to be tested does not exceed the preset safety temperature, the battery current does not exceed the preset safety current, and the battery voltage does not exceed the preset safety voltage under any test environment, the initial battery state of the lithium battery to be tested is determined to be a normal state.

[0106] S420, when the initial battery state indicates that the lithium battery to be tested is normal, determining a target battery state of the lithium battery to be tested according to the battery safety parameters of the lithium battery to be tested.

[0107] Among them, battery safety parameters include battery insulation pressure resistance and air tightness.

[0108] Illustratively, in this embodiment, when the initial battery state indicates that the lithium battery to be tested is in a normal state, the target battery state of the lithium battery to be tested is further determined according to the battery safety parameters of the lithium battery to be tested.

[0109] Optionally, the lithium battery to be tested is subjected to insulation withstand voltage and air tightness tests. If both tests pass, the target battery state of the lithium battery to be tested is determined to be a normal state; otherwise, the target battery state of the lithium battery to be tested is determined to be a fault state.

[0110] In the above embodiment, the process of determining the target battery state of the lithium battery to be tested is described in detail. In the process of determining the target battery state, not only the battery function parameters of the lithium battery to be tested but also the battery safety parameters of the lithium battery to be tested are considered, so that the target battery state is more accurate.

[0111] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0112] Based on the same inventive concept, the embodiment of the present application also provides a lithium battery fault test device for implementing the above-mentioned lithium battery fault test method. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above-mentioned method, so the specific limitations in one or more lithium battery fault test device embodiments provided below can refer to the limitations of the lithium battery fault test method above, and will not be repeated here.

[0113] In an exemplary embodiment, Figure 5 As shown, a lithium battery fault testing device is provided, comprising: a position acquisition module 510, a data determination module 520, a battery testing module 530 and a battery status determination module 540, wherein:

[0114] The position acquisition module 510 is used to acquire the installation position of the lithium battery to be tested in the vehicle.

[0115] The data determination module 520 is used to determine the fault test environment data corresponding to the lithium battery to be tested according to the installation position.

[0116] The fault test environment data includes at least one of frequency data, temperature data and current data.

[0117] The battery testing module 530 is used to perform a fault test on the lithium battery to be tested based on the fault testing environment data.

[0118] The battery state determination module 540 is used to determine the target battery state of the lithium battery to be tested according to the battery function parameters of the lithium battery to be tested under the corresponding fault test environment.

[0119] In one embodiment, if the fault test environment data includes frequency data, the battery test module 530 includes a data acquisition unit for acquiring power spectrum density data corresponding to different frequency data; a data determination unit for determining the power spectrum density data corresponding to any frequency data; and a first fault test unit for performing a fault test on the lithium battery to be tested based on different frequency data and the power spectrum density data corresponding to each frequency data.

[0120] In one embodiment, if the fault test environment data includes temperature data and current data, the battery test module 530 includes an interval determination unit for obtaining the charge and discharge interval corresponding to the battery to be tested under different temperature data; a current determination unit for determining the current data corresponding to the temperature data for any temperature data according to the charge and discharge interval corresponding to the temperature data; and a second fault test unit for performing a fault test on the lithium battery to be tested based on different temperature data and the current data corresponding to each temperature data.

[0121] In one embodiment, the battery status determination module 540 includes an initial status determination unit, which is used to determine the initial battery status of the lithium battery to be tested according to the battery function parameters of the lithium battery to be tested under the corresponding fault test environment; and a target status determination unit, which is used to determine the target battery status of the lithium battery to be tested according to the battery safety parameters of the lithium battery to be tested when the initial battery status indicates that the lithium battery to be tested is normal.

[0122] In one embodiment, the battery function parameters include battery temperature, battery current and battery voltage; accordingly, the initial state determination unit is specifically used to determine that the initial battery state of the lithium battery to be tested is a fault state if the lithium battery to be tested meets any one of the following conditions: the battery temperature of the lithium battery to be tested under any fault test environment exceeds the preset safety temperature; the battery current of the lithium battery to be tested under any fault test environment exceeds the preset safety current; the battery voltage of the lithium battery to be tested under any fault test environment exceeds the preset safety voltage.

[0123] In one embodiment, the target state determination unit is specifically configured to use, based on a preset mapping relationship, reference environmental data corresponding to the installation position in the preset mapping relationship as fault test environmental data corresponding to the lithium battery to be tested.

[0124] Each module in the above-mentioned lithium battery fault test device can be implemented in whole or in part by software, hardware and their combination. Each of the above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the corresponding operations of each of the above modules.

[0125] In an exemplary embodiment, a computer device is provided. The computer device may be a terminal, and its internal structure diagram may be as shown in FIG. Figure 6 As shown. The computer device includes a processor, a memory, an input / output interface, a communication interface, a display unit and an input device. The processor, the memory and the input / output interface are connected through a system bus, and the communication interface, the display unit and the input device are connected to the system bus through the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be implemented through WIFI, a mobile cellular network, near field communication (NFC) or other technologies. When the computer program is executed by the processor, a lithium battery fault testing method is implemented. The display unit of the computer device is used to form a visually visible picture, which can be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covering the display screen, or a button, trackball or touchpad set on the computer device shell, or an external keyboard, touchpad or mouse.

[0126] Those skilled in the art will understand that Figure 6 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0127] In an exemplary embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the following steps are implemented:

[0128] Obtain the installation position of the lithium battery to be tested in the vehicle;

[0129] Determine the fault test environment data corresponding to the lithium battery to be tested according to the installation position; wherein the fault test environment data includes at least one of frequency data, temperature data and current data;

[0130] Based on the fault test environment data, a fault test is performed on the lithium battery to be tested;

[0131] The target battery state of the lithium battery to be tested is determined according to the battery function parameters of the lithium battery to be tested under the corresponding fault test environment.

[0132] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0133] Obtain power spectrum density data corresponding to different frequency data;

[0134] For any frequency data, determine the power spectrum density data corresponding to the frequency data;

[0135] Based on different frequency data and the power spectrum density data corresponding to each frequency data, a fault test is performed on the lithium battery to be tested.

[0136] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0137] Obtain the charge and discharge intervals corresponding to the battery under test under different temperature data;

[0138] For any temperature data, according to the charge and discharge interval corresponding to the temperature data, determine the current data corresponding to the temperature data;

[0139] Based on different temperature data and current data corresponding to each temperature data, a fault test is performed on the lithium battery to be tested.

[0140] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0141] Determine the initial battery state of the lithium battery to be tested according to the battery function parameters of the lithium battery to be tested under the corresponding fault test environment;

[0142] When the initial battery state indicates that the lithium battery to be tested is normal, a target battery state of the lithium battery to be tested is determined according to the battery safety parameters of the lithium battery to be tested.

[0143] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0144] If the lithium battery to be tested meets any of the following conditions, the initial battery state of the lithium battery to be tested is determined to be a fault state:

[0145] The battery temperature of the lithium battery under test exceeds the preset safety temperature in any fault test environment;

[0146] The battery current of the lithium battery under test exceeds the preset safety current under any fault test environment;

[0147] The battery voltage of the lithium battery under test exceeds the preset safety voltage under any fault test environment.

[0148] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0149] Based on the preset mapping relationship, the reference environment data corresponding to the installation position in the preset mapping relationship is used as the fault test environment data corresponding to the lithium battery to be tested.

[0150] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

[0151] Obtain the installation position of the lithium battery to be tested in the vehicle;

[0152] Determine the fault test environment data corresponding to the lithium battery to be tested according to the installation position; wherein the fault test environment data includes at least one of frequency data, temperature data and current data;

[0153] Based on the fault test environment data, a fault test is performed on the lithium battery to be tested;

[0154] The target battery state of the lithium battery to be tested is determined according to the battery function parameters of the lithium battery to be tested under the corresponding fault test environment.

[0155] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0156] Obtain power spectrum density data corresponding to different frequency data;

[0157] For any frequency data, determine the power spectrum density data corresponding to the frequency data;

[0158] Based on different frequency data and the power spectrum density data corresponding to each frequency data, a fault test is performed on the lithium battery to be tested.

[0159] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0160] Obtain the charge and discharge intervals corresponding to the battery under test under different temperature data;

[0161] For any temperature data, according to the charge and discharge interval corresponding to the temperature data, determine the current data corresponding to the temperature data;

[0162] Based on different temperature data and current data corresponding to each temperature data, a fault test is performed on the lithium battery to be tested.

[0163] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0164] Determine the initial battery state of the lithium battery to be tested according to the battery function parameters of the lithium battery to be tested under the corresponding fault test environment;

[0165] When the initial battery state indicates that the lithium battery to be tested is normal, a target battery state of the lithium battery to be tested is determined according to the battery safety parameters of the lithium battery to be tested.

[0166] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0167] If the lithium battery to be tested meets any of the following conditions, the initial battery state of the lithium battery to be tested is determined to be a fault state:

[0168] The battery temperature of the lithium battery under test exceeds the preset safety temperature in any fault test environment;

[0169] The battery current of the lithium battery under test exceeds the preset safety current under any fault test environment;

[0170] The battery voltage of the lithium battery under test exceeds the preset safety voltage under any fault test environment.

[0171] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0172] Based on the preset mapping relationship, the reference environment data corresponding to the installation position in the preset mapping relationship is used as the fault test environment data corresponding to the lithium battery to be tested.

[0173] In one embodiment, a computer program product is provided, comprising a computer program, which, when executed by a processor, implements the following steps:

[0174] Obtain the installation position of the lithium battery to be tested in the vehicle;

[0175] Determine the fault test environment data corresponding to the lithium battery to be tested according to the installation position; wherein the fault test environment data includes at least one of frequency data, temperature data and current data;

[0176] Based on the fault test environment data, a fault test is performed on the lithium battery to be tested;

[0177] The target battery state of the lithium battery to be tested is determined according to the battery function parameters of the lithium battery to be tested under the corresponding fault test environment.

[0178] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0179] Obtain power spectrum density data corresponding to different frequency data;

[0180] For any frequency data, determine the power spectrum density data corresponding to the frequency data;

[0181] Based on different frequency data and the power spectrum density data corresponding to each frequency data, a fault test is performed on the lithium battery to be tested.

[0182] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0183] Obtain the charge and discharge intervals corresponding to the battery under test under different temperature data;

[0184] For any temperature data, according to the charge and discharge interval corresponding to the temperature data, determine the current data corresponding to the temperature data;

[0185] Based on different temperature data and current data corresponding to each temperature data, a fault test is performed on the lithium battery to be tested.

[0186] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0187] Determine the initial battery state of the lithium battery to be tested according to the battery function parameters of the lithium battery to be tested under the corresponding fault test environment;

[0188] When the initial battery state indicates that the lithium battery to be tested is normal, a target battery state of the lithium battery to be tested is determined according to the battery safety parameters of the lithium battery to be tested.

[0189] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0190] If the lithium battery to be tested meets any of the following conditions, the initial battery state of the lithium battery to be tested is determined to be a fault state:

[0191] The battery temperature of the lithium battery under test exceeds the preset safety temperature in any fault test environment;

[0192] The battery current of the lithium battery under test exceeds the preset safety current under any fault test environment;

[0193] The battery voltage of the lithium battery under test exceeds the preset safety voltage under any fault test environment.

[0194] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0195] Based on the preset mapping relationship, the reference environment data corresponding to the installation position in the preset mapping relationship is used as the fault test environment data corresponding to the lithium battery to be tested.

[0196] A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., but are not limited to this.

[0197] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0198] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A lithium battery fault testing method, characterized in that: The method comprises: Obtain the installation position of the lithium battery to be tested in the vehicle; Determine the fault test environment data corresponding to the lithium battery to be tested according to the installation position; wherein the fault test environment data includes at least one of frequency data, temperature data and current data; Based on the fault test environment data, performing a fault test on the lithium battery to be tested; The target battery state of the lithium battery to be tested is determined according to the battery function parameters of the lithium battery to be tested under the corresponding fault test environment.

2. The method according to claim 1, characterized in that If the fault test environment data includes the frequency data, then the step of performing a fault test on the lithium battery to be tested based on the fault test environment data includes: Obtain power spectrum density data corresponding to different frequency data; For any frequency data, determining power spectrum density data corresponding to the frequency data; Based on the different frequency data and the power spectrum density data corresponding to each frequency data, a fault test is performed on the lithium battery to be tested.

3. The method according to claim 1, characterized in that If the fault test environment data includes the temperature data and the current data, then the step of performing a fault test on the lithium battery to be tested based on the fault test environment data includes: Obtaining the charge and discharge intervals corresponding to the battery under test under different temperature data; For any temperature data, according to the charge and discharge interval corresponding to the temperature data, determine the current data corresponding to the temperature data; Based on different temperature data and current data corresponding to each temperature data, a fault test is performed on the lithium battery to be tested.

4. The method according to any one of claims 1 to 3, characterized in that The step of determining a target battery state of the lithium battery to be tested according to the battery function parameters of the lithium battery to be tested under a corresponding fault test environment includes: Determining the initial battery state of the lithium battery to be tested according to the battery function parameters of the lithium battery to be tested under the corresponding fault test environment; When the initial battery state indicates that the lithium battery to be tested is normal, a target battery state of the lithium battery to be tested is determined according to the battery safety parameters of the lithium battery to be tested.

5. The method according to claim 4, characterized in that The battery function parameters include battery temperature, battery current and battery voltage; accordingly, determining the initial battery state of the lithium battery to be tested according to the battery function parameters of the lithium battery to be tested under the corresponding fault test environment includes: If the lithium battery to be tested meets any one of the following conditions, it is determined that the initial battery state of the lithium battery to be tested is a fault state: The battery temperature of the lithium battery to be tested exceeds the preset safety temperature under any fault test environment; The battery current of the lithium battery to be tested exceeds the preset safety current under any fault test environment; The battery voltage of the lithium battery to be tested exceeds the preset safety voltage under any fault test environment.

6. The method according to any one of claims 1 to 3, characterized in that The step of determining the fault test environment data corresponding to the lithium battery to be tested according to the installation position includes: Based on the preset mapping relationship, the reference environment data corresponding to the installation position in the preset mapping relationship is used as the fault test environment data corresponding to the lithium battery to be tested.

7. A lithium battery fault testing device, characterized in that: The device comprises: A position acquisition module is used to obtain the installation position of the lithium battery to be tested in the vehicle; A data determination module, used to determine the fault test environment data corresponding to the lithium battery to be tested according to the installation position; wherein the fault test environment data includes at least one of frequency data, temperature data and current data; A battery testing module, used for performing a fault test on the lithium battery to be tested based on the fault test environment data; The battery state determination module is used to determine the target battery state of the lithium battery to be tested according to the battery function parameters of the lithium battery to be tested under the corresponding fault test environment.

8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 6 are implemented.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

Images