Vibration tooling design method and device for vehicle battery system

Abstract

The application discloses a vibration tool design method and device of a vehicle battery system, wherein the method comprises the following steps: determining the working condition of battery pack vibration based on target development requirements, so as to obtain the frequency information of the battery pack, and generating the stiffness standard of tool design based on the frequency information; designing the vibration tool structure of the battery pack according to the structure of the battery pack, obtaining the single-tool stiffness verification result based on the frequency structure of the vibration tool structure, and obtaining the tool-battery pack system stiffness verification result based on the frequency structure of the system installed to the vibration tool structure, so as to obtain the final vibration tool design result when the single-tool stiffness verification result and the tool-battery pack system stiffness verification result both meet the stiffness standard. According to the stiffness standard of the generated tool design, the final vibration tool design result is obtained when the single-tool stiffness verification result and the tool-battery pack system stiffness verification result both meet the stiffness standard, so that the cycle and cost of tool design are effectively reduced.

Description

Technical Field

[0001] This application relates to the field of power battery technology, and in particular to a vibration tooling design method and apparatus for a vehicle battery system. Background Technology

[0002] In related technologies, the fixtures for battery pack bench vibration testing are mainly divided into support structures and hanging structures. Among them, the support structure fixtures are placed under the battery pack in a support manner to connect the battery pack and the test bench, and the designed fixtures need to simulate the installation method in actual product use.

[0003] However, related technologies, such as patent CN210269090U "Vibration test fixture and vibration test device for power batteries", fail to restrict the structural form of the fixture, resulting in a low standard for the stiffness of the fixture. This leads to the failure of bench vibration verification of the battery pack, which increases the cost and cycle of fixture design and fails to meet the needs of fixture design. This issue urgently needs to be addressed. Summary of the Invention

[0004] This application is based on the inventor's understanding and insights into the following issues:

[0005] Battery systems used in electric vehicles need to undergo bench vibration testing according to relevant standards. Specifically, battery packs undergo vibration testing according to the national standard GB 38031-2020, "Safety Requirements for Power Batteries for Electric Vehicles." Currently, such as... Figure 1 As shown, depending on the connection method of the battery pack on the vehicle, the tooling for battery pack bench vibration testing is mainly divided into two types, such as... Figure 1 (a) shows the support structure and as Figure 1 (b) shows a hoisting structure in which the tooling of the support structure is placed at the bottom of the battery pack in a support manner, and can connect the battery pack to the test bench. The hoisting tooling is mainly used to ensure that the connection state of the battery pack on the test bench is as consistent as possible with the state on the vehicle. It is mainly used when there is a mounting point between the battery pack and the vehicle body.

[0006] The national standard for battery packs, GB 38031-2020, "Safety Requirements for Power Batteries for Electric Vehicles," does not restrict or require the structural form of the tooling. The standard GB / T 2423.56 cited in it only requires that the designed tooling should simulate the installation method in actual product use. Without a clear standard for tooling stiffness, the designed tooling may be either too stiff or too rigid. This can lead to the battery pack failing the bench vibration test or the tooling being over-designed, resulting in wasted product and tooling design costs and extended cycle time.

[0007] This application provides a vibration fixture design method and apparatus for a vehicle battery system to solve the problem that the related technology fails to restrict the structural form of the fixture, resulting in a low standard for the stiffness of the fixture, which leads to the failure of bench vibration verification of the battery pack, increases the fixture design cost and cycle, and fails to meet the needs of fixture design.

[0008] The first aspect of this application provides a vibration fixture design method for a vehicle battery system, comprising the following steps: determining the operating conditions of battery pack vibration based on target development requirements; obtaining frequency information of the battery pack according to the operating conditions of battery pack vibration, and generating a stiffness standard for fixture design based on the frequency information; designing a vibration fixture structure for the battery pack according to the structure of the battery pack, obtaining a single fixture stiffness verification result based on the frequency structure of the vibration fixture structure, and obtaining a fixture-battery pack system stiffness verification result based on the frequency structure of the system installed on the vibration fixture structure, so that when both the single fixture stiffness verification result and the fixture-battery pack system stiffness verification result meet the stiffness standard, a final vibration fixture design result is obtained.

[0009] Based on the above technical means, the embodiments of this application can obtain the frequency information of the battery pack according to the working condition of the battery pack vibration, and generate the stiffness standard of the tooling design. When both the stiffness verification results of the single tooling and the stiffness verification results of the tooling-battery pack system meet the stiffness standard, the final vibration tooling design result is obtained, thereby effectively reducing the cycle and cost of tooling design and meeting the needs of tooling design.

[0010] Optionally, in one embodiment of this application, the frequency information includes at least one of the following: lowest frequency, highest frequency, key focus frequency, and frequency point with the largest amplitude.

[0011] Based on the above-mentioned technical means, the embodiments of this application can effectively improve the feasibility of stiffness standards in tooling design.

[0012] Optionally, in one embodiment of this application, the stiffness standard includes: when the difference between the system frequency of the battery pack assembly and the lowest frequency quality inspection is greater than a preset difference, the first-order frequency of the tooling is a preset multiple of the first-order main frequency of the battery pack; when the system frequency of the battery pack assembly is evaluated to reach the highest frequency, the first-order frequency of the tooling is greater than a preset multiple of the highest frequency of the operating condition; and the frequency of the battery pack assembly system does not include the preset key focus frequency and the frequency point with the largest amplitude.

[0013] Based on the above technical means, the embodiments of this application can specify the standard of tooling stiffness based on vibration conditions, thereby effectively reducing the tooling design cycle and saving tooling design costs.

[0014] Optionally, in one embodiment of this application, obtaining the single-tool stiffness verification result based on the frequency structure of the vibration fixture includes: for a supported fixture or a suspended fixture, obtaining the single-tool stiffness verification result based on a comparison between the first-order mode of the supported fixture or the suspended fixture and a preset multiple of the corresponding highest frequency.

[0015] Based on the above technical means, the embodiments of this application can obtain the results of single tooling stiffness verification based on the frequency structure of the vibration tooling structure, effectively avoiding the arbitrariness of tooling design and improving the controllability of tooling design costs.

[0016] Optionally, in one embodiment of this application, obtaining the stiffness verification result of the tooling-battery pack system based on the frequency structure of the system installed on the vibration tooling structure includes: obtaining the stiffness verification result of the tooling-battery pack system based on the relationship between the first-order overall mode of the battery pack + tooling system and a preset range obtained from the key focus frequency points.

[0017] Based on the above technical means, the embodiments of this application can determine the qualification of tooling design based on key focus frequency points, and redesign single tooling when the tooling is actually unqualified to improve the rigidity of the tooling, thereby effectively reducing the manual operation cost of tooling design, improving the accuracy of tooling design, and effectively meeting the needs of tooling design.

[0018] A second aspect of this application provides a vibration fixture design apparatus for a vehicle battery system, comprising: a determination module for determining the operating conditions of battery pack vibration based on target development requirements; a generation module for obtaining frequency information of the battery pack based on the operating conditions of the battery pack vibration, and generating stiffness standards for fixture design based on the frequency information; and a processing module for designing a vibration fixture structure for the battery pack based on the structure of the battery pack, obtaining a single fixture stiffness verification result based on the frequency structure of the vibration fixture structure, and obtaining a fixture-battery pack system stiffness verification result based on the frequency structure of the system installed on the vibration fixture structure, so as to obtain a final vibration fixture design result when both the single fixture stiffness verification result and the fixture-battery pack system stiffness verification result meet the stiffness standards.

[0019] Optionally, in one embodiment of this application, the frequency information includes at least one of the following: lowest frequency, highest frequency, key focus frequency, and frequency point with the largest amplitude.

[0020] Optionally, in one embodiment of this application, the stiffness standard includes, when the difference between the system frequency of the battery pack assembly and the lowest frequency quality inspection is greater than a preset difference, the first-order frequency of the tooling is a preset multiple of the first-order main frequency of the battery pack; when the system frequency of the battery pack assembly is evaluated to reach the highest frequency, the first-order frequency of the tooling is greater than a preset multiple of the highest frequency of the operating condition; and the frequency of the battery pack assembly system does not include the preset key focus frequency and the frequency point with the largest amplitude.

[0021] Optionally, in one embodiment of this application, the processing module includes: a processing unit, used to obtain the stiffness verification result of the single tooling based on a comparison result between the first-order mode of the supporting tooling or the hoisting tooling and a preset multiple of the corresponding highest frequency.

[0022] Optionally, in one embodiment of this application, the processing module includes: a generation unit, used to obtain the stiffness verification result of the tooling-battery pack system based on the relationship between the first-order overall mode of the battery pack + tooling system and a preset range obtained from the key focus frequency points.

[0023] A third aspect of this application provides an electronic device, including: 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 vibration tooling design method for a vehicle battery system as described in the above embodiments.

[0024] A fourth aspect of this application provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the vibration tooling design method for a vehicle battery system as described above.

[0025] The beneficial effects of this application are:

[0026] (1) The embodiments of this application can obtain the results of single tool stiffness verification based on the frequency structure of the vibration tool structure, which effectively avoids the arbitrariness of tool design and improves the controllability of tool design cost.

[0027] (2) The embodiments of this application can determine the qualification of tooling design based on key frequency points, and redesign the single tooling when the tooling is actually unqualified, so as to improve the rigidity of the tooling, thereby effectively reducing the manual operation cost of tooling design, improving the accuracy of tooling design, and effectively meeting the needs of tooling design.

[0028] (3) The embodiments of this application can obtain the frequency information of the battery pack based on the working condition of the battery pack vibration, and generate the stiffness standard of the tooling design. When the stiffness verification results of the single tooling and the stiffness verification results of the tooling-battery pack system both meet the stiffness standard, the final vibration tooling design result is obtained, thereby effectively reducing the cycle and cost of tooling design and meeting the needs of tooling design.

[0029] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0030] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0031] Figure 1 This is a structural diagram of supporting tooling and hoisting tooling in related technologies;

[0032] Figure 2 This is a flowchart illustrating a vibration tooling design method for a vehicle battery system according to an embodiment of this application.

[0033] Figure 3 This is a structural schematic diagram of a vibration condition according to a specific embodiment of this application;

[0034] Figure 4 This is a schematic diagram of the structure of a battery pack + tooling system according to a specific embodiment of this application;

[0035] Figure 5 This is a schematic diagram of the structure of the vibration tooling design device for a vehicle battery system provided in accordance with the embodiments of this application;

[0036] Figure 6 This is a schematic diagram of the structure of an electronic device provided according to an embodiment of this application.

[0037] Among them, 10-Vibration fixture design device for vehicle battery system; 100-Determining module, 200-Generation module and 300-Processing module; 601-Memory, 602-Processor and 603-Communication interface. Detailed Implementation

[0038] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0039] The vibration fixture design method and apparatus for a vehicle battery system according to embodiments of this application are described below with reference to the accompanying drawings. Addressing the problem mentioned in the background section that the related technologies fail to restrict the structural form of the fixture, resulting in low standards for fixture stiffness and failure to pass bench vibration verification of the battery pack, increasing fixture design costs and time, and failing to meet fixture design requirements, this application provides a vibration fixture design method for a vehicle battery system. In this method, the operating conditions of the battery pack vibration can be determined based on target development requirements, thereby obtaining the frequency information of the battery pack. Stiffness standards for fixture design are generated based on the frequency information. A vibration fixture structure for the battery pack is designed according to the battery pack structure. The stiffness verification result of a single fixture is obtained based on the frequency structure of the vibration fixture structure, and the stiffness verification result of the fixture-battery pack system is obtained based on the frequency structure of the system installed on the vibration fixture structure. When both the single fixture stiffness verification result and the fixture-battery pack system stiffness verification result meet the stiffness standards, the final vibration fixture design result is obtained, effectively reducing the fixture design time and cost while meeting the fixture design requirements. This solves the problem in related technologies where the failure to restrict the structural form of tooling resulted in low standards for tooling stiffness, leading to the failure of bench vibration verification of battery packs, increasing tooling design costs and time, and failing to meet tooling design requirements.

[0040] Specifically, Figure 2 This is a flowchart illustrating a vibration fixture design method for a vehicle battery system provided in an embodiment of this application.

[0041] like Figure 2 As shown, the vibration fixture design method for the vehicle battery system includes the following steps:

[0042] In step S201, the operating conditions of battery pack vibration are determined based on the target development requirements.

[0043] It is understood that the embodiments of this application can determine the operating conditions of battery pack vibration based on target development requirements, for example, such as Figure 3 As shown, the embodiments of this application can determine the working conditions for testing the battery pack based on the national standard GB 38031-2020 or the test requirements during the development process. The working conditions include, but are not limited to, signals such as acceleration and frequency, thereby effectively improving the feasibility of the vibration fixture design for the battery system.

[0044] In step S202, the frequency information of the battery pack is obtained according to the working condition of the battery pack vibration, and the stiffness standard of the tooling design is generated based on the frequency information.

[0045] It is understood that the embodiments of this application can obtain the frequency information of the battery pack in the following steps based on the operating conditions of battery pack vibration, and generate the stiffness standard of tooling design in the following steps based on the frequency information, thereby effectively improving the accuracy of tooling design stiffness.

[0046] In one embodiment of this application, the frequency information includes at least one of the following: lowest frequency, highest frequency, key focus frequency, and frequency point with the largest amplitude.

[0047] In actual implementation, the key frequency information in the embodiments of this application includes, but is not limited to, the lowest frequency, the highest frequency, the key focus frequency, and the frequency point with the largest amplitude, which effectively improves the feasibility of stiffness standards in tooling design.

[0048] In one embodiment of this application, the stiffness standard includes: when the difference between the system frequency and the lowest frequency of the battery pack assembly is greater than a preset difference, the first-order frequency of the tooling is a preset multiple of the first-order main frequency of the battery pack; when the system frequency of the battery pack assembly is evaluated to reach the highest frequency, the first-order frequency of the tooling is greater than a preset multiple of the highest frequency of the operating condition; and the frequency of the battery pack assembly system does not include the preset key focus frequency and the frequency point with the largest amplitude.

[0049] For example, when the difference between the system frequency and the lowest frequency of the battery pack assembly is greater than a certain value, the first-order frequency of the tooling is equal to three times the first-order main frequency of the battery pack. When the system frequency of the battery pack assembly is evaluated to reach the highest frequency, the first-order frequency of the tooling is greater than three times the highest operating frequency. Furthermore, the frequency of the battery pack assembly system does not include the key focus frequency or the frequency point with the largest amplitude. Therefore, the standard for tooling stiffness can be specified based on the vibration operating conditions, thereby effectively reducing the tooling design cycle and saving tooling design costs.

[0050] In step S203, the vibration fixture structure of the battery pack is designed according to the structure of the battery pack, and the stiffness verification result of the single fixture is obtained based on the frequency structure of the vibration fixture structure. The stiffness verification result of the fixture-battery pack system is obtained based on the frequency structure of the system installed on the vibration fixture structure. When both the stiffness verification result of the single fixture and the stiffness verification result of the fixture-battery pack system meet the stiffness standard, the final vibration fixture design result is obtained.

[0051] It is understood that the embodiments of this application can design the vibration fixture structure of the battery pack according to the structure of the battery pack, and obtain the stiffness verification result of the single fixture based on the frequency structure of the vibration fixture structure in the following steps, and obtain the stiffness verification result of the fixture-battery pack system based on the frequency structure of the system installed on the vibration fixture structure in the following steps. When both the stiffness verification result of the single fixture and the stiffness verification result of the fixture-battery pack system meet the stiffness standard, the final vibration fixture design result is obtained, thereby effectively reducing the cycle and cost of fixture design and meeting the requirements of fixture design.

[0052] In one embodiment of this application, the stiffness verification result of a single fixture is obtained based on the frequency structure of the vibration fixture structure, including: for a supported fixture or a suspended fixture, the stiffness verification result of a single fixture is obtained by comparing the first-order mode of the supported fixture or the suspended fixture with a preset multiple of the corresponding highest frequency.

[0053] For example, in the embodiments of this application, the designed battery pack tooling structure can be subjected to modal analysis using the finite element method, with a focus on the natural frequency structure being analyzed. For support-type tooling, the first-order mode f1 of the tooling is greater than three times the highest frequency of the operating condition; for hoisting-type tooling, the first-order mode f1 of the tooling is greater than the highest frequency of the operating condition. This allows for the verification results of the stiffness of a single tooling, effectively avoiding the arbitrariness of tooling design and improving the controllability of tooling design costs.

[0054] In one embodiment of this application, the stiffness verification result of the tooling-battery pack system is obtained based on the frequency structure of the system installed on the vibration tooling structure, including: obtaining the stiffness verification result of the tooling-battery pack system based on the relationship between the first-order overall mode of the battery pack + tooling system and the preset range obtained from the key focus frequency points.

[0055] As one possible way to achieve this, such as Figure 4 As shown in the embodiments of this application, modal analysis can be performed on the structural system of the battery pack system installed on the tooling using the finite element method, with a focus on the natural frequencies analyzed. The first-order overall mode of the battery pack + tooling system can be greater than or less than 10% of the key frequency point. For example, assuming the key frequency point is fc, if the first-order overall mode of the battery pack + tooling system is greater than 1.1*fc or less than 0.9*fc, the tooling design is qualified. Otherwise, the single tooling needs to be redesigned to improve the stiffness of the tooling, thereby effectively reducing the manual operation cost of tooling design, improving the accuracy of tooling design, and effectively meeting the needs of tooling design.

[0056] The vibration fixture design method for a vehicle battery system proposed in this application can determine the vibration conditions of the battery pack based on target development requirements, thereby obtaining the frequency information of the battery pack. Based on the frequency information, a stiffness standard for fixture design is generated. The vibration fixture structure of the battery pack is designed according to its structure. The stiffness verification result of a single fixture is obtained based on the frequency structure of the vibration fixture structure, and the stiffness verification result of the fixture-battery pack system is obtained based on the frequency structure of the system installed on the vibration fixture structure. When both the single fixture stiffness verification result and the fixture-battery pack system stiffness verification result meet the stiffness standard, the final vibration fixture design result is obtained. This effectively reduces the fixture design cycle and cost while meeting the fixture design requirements. Therefore, it solves the problem in related technologies where the structural form of the fixture is not restricted, resulting in a low standard for fixture stiffness, which leads to the failure of bench vibration verification of the battery pack, increases fixture design cost and cycle, and fails to meet the fixture design requirements.

[0057] Next, referring to the accompanying drawings, a vibration tooling design device for a vehicle battery system according to an embodiment of this application is described.

[0058] Figure 5 This is a block diagram of a vibration tooling design device for a vehicle battery system according to an embodiment of this application.

[0059] like Figure 5 As shown, the vibration tooling design device 10 for the vehicle battery system includes: a determination module 100, a generation module 200, and a processing module 300.

[0060] Specifically, module 100 is used to determine the operating conditions of battery pack vibration based on target development requirements.

[0061] The generation module 200 is used to obtain the frequency information of the battery pack based on the vibration conditions of the battery pack, and generate the stiffness standard of the tooling design based on the frequency information.

[0062] The processing module 300 is used to design the vibration fixture structure of the battery pack according to the structure of the battery pack, obtain the stiffness verification result of the single fixture based on the frequency structure of the vibration fixture structure, and obtain the stiffness verification result of the fixture-battery pack system based on the frequency structure of the system installed on the vibration fixture structure. When both the stiffness verification result of the single fixture and the stiffness verification result of the fixture-battery pack system meet the stiffness standard, the final vibration fixture design result is obtained.

[0063] Optionally, in one embodiment of this application, the frequency information includes at least one of the following: lowest frequency, highest frequency, frequency of particular interest, and frequency point with the largest amplitude.

[0064] Optionally, in one embodiment of this application, the stiffness standard includes, when the difference between the system frequency and the lowest frequency of the battery pack assembly being evaluated is greater than a preset difference, the first-order frequency of the tooling is a preset multiple of the first-order main frequency of the battery pack; when the system frequency of the battery pack assembly is evaluated to reach the highest frequency, the first-order frequency of the tooling is greater than a preset multiple of the highest frequency of the operating condition; and the frequency of the battery pack assembly system does not include the preset key focus frequency and the frequency point with the largest amplitude.

[0065] Optionally, in one embodiment of this application, the processing module includes a processing unit.

[0066] The processing unit is used to obtain the stiffness verification result of a single fixture based on the comparison result between the first-order mode of the supporting fixture and the preset multiple of the corresponding highest frequency for the supporting fixture or the hoisting fixture.

[0067] Optionally, in one embodiment of this application, the processing module includes a generation unit.

[0068] The generation unit is used to obtain the stiffness verification result of the tooling-battery pack system based on the relationship between the first-order overall mode of the battery pack + tooling system and the preset range obtained from the key frequency points.

[0069] It should be noted that the foregoing explanation of the vibration fixture design method embodiment for vehicle battery systems also applies to the vibration fixture design device for vehicle battery systems in this embodiment, and will not be repeated here.

[0070] The vibration fixture design device for a vehicle battery system proposed in this application can determine the vibration conditions of the battery pack based on target development requirements, thereby obtaining the frequency information of the battery pack. Based on the frequency information, a stiffness standard for fixture design is generated. The vibration fixture structure of the battery pack is designed according to the battery pack structure. The stiffness verification result of a single fixture is obtained based on the frequency structure of the vibration fixture structure, and the stiffness verification result of the fixture-battery pack system is obtained based on the frequency structure of the system installed on the vibration fixture structure. When both the single fixture stiffness verification result and the fixture-battery pack system stiffness verification result meet the stiffness standard, the final vibration fixture design result is obtained. This effectively reduces the fixture design cycle and cost while meeting the fixture design requirements. Therefore, it solves the problem in related technologies where the structural form of the fixture is not restricted, resulting in a low standard for fixture stiffness, which leads to the failure of bench vibration verification of the battery pack, increases the fixture design cost and cycle, and fails to meet the fixture design requirements.

[0071] Figure 6 A schematic diagram of the structure of an electronic device provided in an embodiment of this application. The electronic device may include:

[0072] The memory 601, the processor 602, and the computer program stored on the memory 601 and capable of running on the processor 602.

[0073] When the processor 602 executes the program, it implements the vibration tooling design method for the vehicle battery system provided in the above embodiments.

[0074] Furthermore, electronic devices also include:

[0075] Communication interface 603 is used for communication between memory 601 and processor 602.

[0076] The memory 601 is used to store computer programs that can run on the processor 602.

[0077] The memory 601 may include high-speed RAM memory, and may also include non-volatile memory, such as at least one disk storage device.

[0078] If the memory 601, processor 602, and communication interface 603 are implemented independently, then the communication interface 603, memory 601, and processor 602 can be interconnected via a bus to complete communication between them. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of representation, Figure 6 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0079] Optionally, in a specific implementation, if the memory 601, processor 602, and communication interface 603 are integrated on a single chip, then the memory 601, processor 602, and communication interface 603 can communicate with each other through an internal interface.

[0080] The processor 602 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of this application.

[0081] This embodiment also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the vibration tooling design method for the vehicle battery system described above.

[0082] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0083] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0084] Any process or method described in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or N executable instructions for implementing custom logic functions or processes, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as should be understood by those skilled in the art to which embodiments of this application pertain.

[0085] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0086] It should be understood that the various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0087] Those skilled in the art will understand that all or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.

[0088] Furthermore, the functional units in the various embodiments of this application can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0089] The storage medium mentioned above can be a read-only memory, a disk, or an optical disk, etc. Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.

Claims

1. A method of designing a vibration tooling for a vehicle battery system, characterized by, Includes the following steps: The operating conditions for battery pack vibration are determined based on the target development requirements; The frequency information of the battery pack is obtained based on the vibration conditions of the battery pack, and the stiffness standard of the tooling design is generated based on the frequency information. as well as Based on the structure of the battery pack, a vibration fixture structure for the battery pack is designed. Based on the frequency structure of the vibration fixture structure, a single fixture stiffness verification result is obtained. Based on the frequency structure of the system installed on the vibration fixture structure, a fixture-battery pack system stiffness verification result is obtained. When both the single fixture stiffness verification result and the fixture-battery pack system stiffness verification result meet the stiffness standard, the final vibration fixture design result is obtained. The frequency information includes at least one of the following: lowest frequency, highest frequency, key focus frequency, and frequency point with the largest amplitude. The stiffness criteria include: When the difference between the system frequency of the battery pack assembly and the lowest frequency is greater than a preset difference, the first-order frequency of the tooling is a preset multiple of the first-order main frequency of the battery pack. When evaluating whether the system frequency of the battery pack processing assembly can reach the highest frequency, the first-order frequency of the tooling is greater than a preset multiple of the highest frequency of the operating condition; Furthermore, the frequency of the battery pack processing and assembly system does not include the preset key frequencies or the frequency points with the largest amplitude.

2. The method of claim 1, wherein, The frequency structure based on the vibration fixture structure yields the single fixture stiffness verification results, including: For supported or suspended fixtures, the stiffness verification result of the single fixture is obtained by comparing the first-order mode of the supported or suspended fixture with a preset multiple of the corresponding highest frequency.

3. The method of claim 1, wherein, The frequency structure of the system based on the vibration fixture structure yields the stiffness verification results of the fixture-battery pack system, including: The stiffness verification result of the tooling-battery pack system is obtained based on the relationship between the first-order overall mode of the battery pack + tooling system and the preset range obtained from the key frequency points.

4. A vibration tooling design device for a vehicle battery system, characterized in that, include: The determination module is used to determine the operating conditions of battery pack vibration based on target development requirements; The generation module is used to obtain the frequency information of the battery pack based on the vibration conditions of the battery pack, and generate the stiffness standard of the tooling design based on the frequency information. as well as The processing module is used to design the vibration fixture structure of the battery pack according to the structure of the battery pack, obtain the stiffness verification result of a single fixture based on the frequency structure of the vibration fixture structure, and obtain the stiffness verification result of the fixture-battery pack system based on the frequency structure of the system installed on the vibration fixture structure, so as to obtain the final vibration fixture design result when both the stiffness verification result of the single fixture and the stiffness verification result of the fixture-battery pack system meet the stiffness standard. The frequency information includes at least one of the following: lowest frequency, highest frequency, key focus frequency, and frequency point with the largest amplitude. The stiffness standard includes the following: when the difference between the system frequency of the battery pack assembly and the lowest frequency is greater than a preset difference, the first-order frequency of the tooling is a preset multiple of the first-order main frequency of the battery pack; when the system frequency of the battery pack assembly is evaluated to reach the highest frequency, the first-order frequency of the tooling is greater than a preset multiple of the highest frequency of the operating condition; and the frequency of the battery pack assembly system does not include the preset key focus frequency and the frequency point with the largest amplitude.

5. An electronic device, characterized in that, include: A memory, a processor, and a computer program stored in the memory and executable on the processor, the processor executing the program to implement the vibration tooling design method for a vehicle battery system as described in any one of claims 1-3.

6. A computer-readable storage medium having a computer program stored thereon, characterized in that, The program is executed by the processor to implement the vibration tooling design method for the vehicle battery system as described in any one of claims 1-3.

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