A method and device for constructing a honeycomb bottom guard plate structure model of a battery

Abstract

Embodiments of the present application provide a method and device for constructing a honeycomb bottom protection plate structure model of a battery, electronic equipment and a storage medium, wherein the method comprises: constructing a basic structure model of a honeycomb bottom protection plate of the battery, the basic structure model of the bottom protection plate being a sandwich structure; performing shape mechanics calculation on a sandwich cross section of the basic structure model of the honeycomb bottom protection plate to obtain a cross section shape of the basic structure model; and performing multi-objective optimization on the basic structure model according to the cross section shape to obtain a target honeycomb bottom protection plate structure model. By implementing the embodiments of the present application, the construction efficiency of the honeycomb bottom protection plate structure model of the battery can be improved, the durability of the honeycomb bottom protection plate structure can be improved, and the capacity of the battery cell can be expanded.

Description

Technical Field

[0001] This application relates to the field of lightweight power battery structure technology, and more specifically, to a method, apparatus, electronic device, and computer storage medium for constructing a honeycomb bottom protective plate structure model of a battery. Background Technology

[0002] Current power battery pack bottom protection plates are generally steel plate bottom protection plates, aluminum alloy plate bottom protection plates, aluminum profile liquid-cooled integrated bottom protection plates, and SMC material bottom protection plates.

[0003] Existing underbody protection plate structures have many drawbacks, such as: steel plate underbody protection plates have a significant weight disadvantage, which is detrimental to battery range and overall vehicle performance; aluminum alloy underbody protection plates have lower specific stiffness and specific strength in terms of mechanical properties, resulting in weak NVH performance and fatigue durability; aluminum profile integrated liquid-cooled underbody protection plates limit battery module layout and cell capacity, and have high replacement costs; SMC material underbody protection plates have poor mechanical properties and material performance consistency. Summary of the Invention

[0004] The purpose of this application is to provide a method, apparatus, electronic device, and storage medium for constructing a honeycomb bottom protection plate structure model of a battery, which can improve the construction efficiency of the honeycomb bottom protection plate structure model, improve the durability of the honeycomb bottom protection plate structure, and expand the capacity of the battery cell.

[0005] In a first aspect, embodiments of this application provide a method for constructing a honeycomb bottom protective plate structure model of a battery, the method comprising:

[0006] Construct a basic structural model of the honeycomb bottom protective plate of the battery, wherein the basic structural model of the bottom protective plate is a sandwich structure;

[0007] Shape mechanics calculations are performed on the interlayer cross-section of the basic structural model of the honeycomb bottom liner to obtain the cross-sectional shape of the basic structural model;

[0008] Based on the cross-sectional shape, the basic structure model is optimized using multiple objectives to obtain the target honeycomb bottom liner structure model.

[0009] In the above implementation process, shape mechanics calculations are performed on the sandwich cross-section of the basic structural model to obtain the most suitable shape of the sandwich cross-section. Then, multi-objective optimization is performed based on the cross-section shape to improve the construction efficiency of the battery's honeycomb bottom protection plate structure model, improve the durability of the honeycomb bottom protection plate structure, and expand the capacity of the battery cell.

[0010] Further, the step of performing shape mechanics calculations on the interlayer cross-section of the basic structural model of the honeycomb bottom liner to obtain the cross-sectional shape of the basic structural model includes:

[0011] Obtain the basic data of the interlayer cross-section;

[0012] The area of ​​the interlayer cross-section is obtained based on the aforementioned basic data;

[0013] The moment of inertia and the section modulus of bending are obtained from the area.

[0014] The cross-sectional shape of the foundation structure model is obtained based on the moment of inertia and the section modulus of bending.

[0015] In the above implementation process, the area, moment of inertia and section modulus of the sandwich section are obtained from the basic data of the sandwich section. This can ensure the best structural performance within a certain range of materials and make the obtained section shape more in line with the requirements of structural mechanical performance.

[0016] Further, the step of obtaining the cross-sectional shape of the foundation structure model based on the moment of inertia and the flexural section modulus includes:

[0017] Obtain the relationship data between the number of cross-sectional edges of the sandwich section and the moment of inertia;

[0018] Obtain the relationship data between the number of cross-sectional edges of the sandwich section and the section modulus of bending resistance;

[0019] The cross-sectional shape of the foundation structure model is obtained based on the relationship between the number of cross-sectional sides of the mezzanine section and the moment of inertia, and the relationship between the number of cross-sectional sides of the mezzanine section and the section modulus of bending.

[0020] In the above implementation process, based on the relationship data between the number of cross-sectional edges and the moment of inertia and the relationship data between the number of cross-sectional edges and the section modulus of bending, the relationship between the change in the number of cross-sectional edges and the moment of inertia and the section modulus of bending can be obtained, thus achieving the optimal cross-sectional shape.

[0021] Further, the step of performing multi-objective optimization on the basic structure model based on the cross-sectional shape to obtain the target honeycomb bottom liner structure model includes:

[0022] Obtain multi-objective optimization parameters;

[0023] The basic structure model is optimized using the multi-objective optimization parameters to obtain the target honeycomb bottom liner structure model.

[0024] In the above implementation process, multi-objective optimization of the basic structure model based on multi-objective optimization parameters can optimize the performance of the target honeycomb bottom liner structure model in multiple aspects, ensuring the robustness and stability of the target honeycomb bottom liner structure model.

[0025] Furthermore, the infrastructure model is subjected to multi-objective optimization based on the multi-objective optimization parameters according to the following formula:

[0026]

[0027] Where, var . The multi-objective optimization parameters include: t is the thickness of the cross-sectional shape, h is the core height of the cross-sectional shape, and a is the core side length of the cross-sectional shape; target is the optimization objective, including: s is a variable, stress is structural strength, k is stiffness, n is fatigue life, b is impact resistance, and mass is weight.

[0028] In the above implementation process, the basic structure model is optimized in multiple disciplines according to the multi-objective optimization parameters, so that the strength, stiffness, fatigue life and other data of the basic structure model can reach the optimal, thereby improving the practicality of the target honeycomb bottom liner structure model.

[0029] Secondly, embodiments of this application also provide a device for constructing a honeycomb bottom protective plate structure model of a battery, the device comprising:

[0030] A construction module is used to construct the basic structural model of the honeycomb bottom protective plate of the battery, wherein the basic structural model of the bottom protective plate is a sandwich structure;

[0031] The calculation module is used to perform shape mechanics calculations on the interlayer cross-section of the basic structure model of the honeycomb bottom liner to obtain the cross-sectional shape of the basic structure model.

[0032] The optimization module is used to perform multi-objective optimization on the basic structure model based on the cross-sectional shape to obtain the target honeycomb bottom liner structure model.

[0033] In the above implementation process, shape mechanics calculations are performed on the sandwich cross-section of the basic structural model to obtain the most suitable shape of the sandwich cross-section. Then, multi-objective optimization is performed based on the cross-section shape to improve the construction efficiency of the battery's honeycomb bottom protection plate structure model, improve the durability of the honeycomb bottom protection plate structure, and expand the capacity of the battery cell.

[0034] Furthermore, the computing module is also used for:

[0035] Obtain the basic data of the interlayer cross-section;

[0036] The area of ​​the interlayer cross-section is obtained based on the aforementioned basic data;

[0037] The moment of inertia and the section modulus of bending are obtained from the area.

[0038] The cross-sectional shape of the foundation structure model is obtained based on the moment of inertia and the section modulus of bending.

[0039] In the above implementation process, the area, moment of inertia and section modulus of the sandwich section are obtained from the basic data of the sandwich section. This can ensure the best structural performance within a certain range of materials and make the obtained section shape more in line with the requirements of structural mechanical performance.

[0040] Furthermore, the computing module is also used for:

[0041] Obtain the relationship data between the number of cross-sectional edges of the sandwich section and the moment of inertia;

[0042] Obtain the relationship data between the number of cross-sectional edges of the sandwich section and the section modulus of bending resistance;

[0043] The cross-sectional shape of the foundation structure model is obtained based on the relationship between the number of cross-sectional sides of the mezzanine section and the moment of inertia, and the relationship between the number of cross-sectional sides of the mezzanine section and the section modulus of bending.

[0044] In the above implementation process, based on the relationship data between the number of cross-sectional edges and the moment of inertia and the relationship data between the number of cross-sectional edges and the section modulus of bending, the relationship between the change in the number of cross-sectional edges and the moment of inertia and the section modulus of bending can be obtained, thus achieving the optimal cross-sectional shape.

[0045] Thirdly, an electronic device provided in this application includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the method as described in any of the first aspects.

[0046] Fourthly, embodiments of this application provide a computer-readable storage medium storing instructions that, when executed on a computer, cause the computer to perform the method described in any of the first aspects.

[0047] Fifthly, embodiments of this application provide a computer program product that, when run on a computer, causes the computer to perform the method described in any of the first aspects.

[0048] Other features and advantages of this disclosure will be set forth in the following description, or some features and advantages may be inferred from the description or determined without doubt, or may be learned by practicing the techniques described above.

[0049] It can be implemented in accordance with the contents of the specification. The preferred embodiments of this application are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0050] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation on the range. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0051] Figure 1 A flowchart illustrating the method for constructing a honeycomb bottom protective plate structure model of a battery provided in an embodiment of this application;

[0052] Figure 2 A schematic diagram of the structural composition of the device for constructing the honeycomb bottom protective plate structure model of the battery provided in the embodiments of this application;

[0053] Figure 3 This is a schematic diagram of the structural composition of the electronic device provided in the embodiments of this application. Detailed Implementation

[0054] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0055] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0056] The specific embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but are not intended to limit the scope of this application.

[0057] Example 1

[0058] Figure 1 This is a flowchart illustrating the method for constructing the honeycomb bottom protective plate structure model of the battery provided in this application embodiment, as shown below. Figure 1 As shown, the method includes:

[0059] S1, Construct the basic structural model of the honeycomb bottom protection plate of the battery. The basic structural model of the bottom protection plate is a sandwich structure.

[0060] S2, perform shape mechanics calculations on the interlayer cross-section of the basic structural model of the honeycomb bottom liner to obtain the cross-sectional shape of the basic structural model;

[0061] S3. Based on the cross-sectional shape, perform multi-objective optimization on the basic structure model to obtain the target honeycomb bottom liner structure model.

[0062] In the above implementation process, shape mechanics calculations are performed on the sandwich cross-section of the basic structural model to obtain the most suitable shape of the sandwich cross-section. Then, multi-objective optimization is performed based on the cross-section shape to improve the construction efficiency of the battery's honeycomb bottom protection plate structure model, improve the durability of the honeycomb bottom protection plate structure, and expand the capacity of the battery cell.

[0063] This application provides an integrated magnesium alloy honeycomb bottom protection plate, combining a magnesium alloy thin sheet and a magnesium alloy honeycomb core, employing a sandwich structure. Based on a biomimetic honeycomb structure with a hexagonal cross-section as the main body of the sandwich, the upper and lower closed thin sheets provide vertical structural support and a mounting plane. The use of the lightest metallic material, magnesium alloy, as the lightweight material compensates for deficiencies in the overall vehicle structure's rigidity, durability, and NVH (noise, vibration, and harshness), ensuring structural consistency and facilitating the arrangement of battery cells and modules, thereby improving the lightweight level and maximizing the driving range.

[0064] Furthermore, S2 includes:

[0065] Obtain basic data of the interlayer cross-section;

[0066] The area of ​​the interlayer cross-section is obtained based on the basic data;

[0067] The moment of inertia and section modulus of bending are obtained from the area.

[0068] The cross-sectional shape of the foundation structure model is obtained based on the moment of inertia and the section modulus of bending.

[0069] In the above implementation process, the area, moment of inertia and section modulus of the sandwich section are obtained from the basic data of the sandwich section. This can ensure the best structural performance within a certain range of materials and make the obtained section shape more in line with the requirements of structural mechanical performance.

[0070] This application embodiment tested various cross-sectional shapes and used honeycomb core structure mechanical calculations from triangular core, square core, hexagonal core to circular core to determine the basic structural model with hexagonal core as honeycomb bottom protective plate.

[0071] Typically, moment of inertia is used to describe an object's resistance to torsion, denoted by I; section modulus of bending is used to describe an object's resistance to bending, denoted by W. Where:

[0072]

[0073]

[0074] Therefore, for the annular cross-section, we have:

[0075]

[0076]

[0077]

[0078] Where S is the cross-sectional area of ​​the annulus, D is the diameter of the greater circle, and d is the diameter of the lesser circle.

[0079] For a square annular cross-section, we have:

[0080] S = A 2 -a 2

[0081]

[0082]

[0083] Where S is the cross-sectional area of ​​the square ring, A is the side length of the large square, and a is the side length of the small square.

[0084] For a triangular ring section, we have:

[0085]

[0086]

[0087]

[0088] Where S is the cross-sectional area of ​​the triangular ring, A is the side length of the large triangle, and a is the side length of the small triangle.

[0089] Furthermore, the steps for obtaining the cross-sectional shape of the foundation structure model based on the moment of inertia and the section modulus of bending include:

[0090] Obtain data on the relationship between the number of cross-sectional edges and the moment of inertia of the interlayer section;

[0091] Obtain data on the relationship between the number of cross-sectional edges of the mezzanine section and the flexural section modulus;

[0092] The cross-sectional shape of the foundation structure model is obtained based on the relationship between the number of cross-sectional sides of the mezzanine section and the moment of inertia, and the relationship between the number of cross-sectional sides of the mezzanine section and the section modulus of bending.

[0093] In the above implementation process, based on the relationship data between the number of cross-sectional edges and the moment of inertia and the relationship data between the number of cross-sectional edges and the section modulus of bending, the relationship between the change in the number of cross-sectional edges and the moment of inertia and the section modulus of bending can be obtained, thus achieving the optimal cross-sectional shape.

[0094] Obviously, based on the above calculations, as the number of cross-sectional edges increases, both the moment of inertia characterizing torsional resistance and the section modulus characterizing bending resistance increase. Since the area utilization rate of a circle is low, the hexagonal honeycomb structure has the best bending and torsional resistance with the same amount of material.

[0095] Furthermore, S3 includes:

[0096] Obtain multi-objective optimization parameters;

[0097] The basic structure model is optimized using multi-objective optimization parameters to obtain the target honeycomb bottom liner structure model.

[0098] In the above implementation process, multi-objective optimization of the basic structure model based on multi-objective optimization parameters can optimize the performance of the target honeycomb bottom liner structure model in multiple aspects, ensuring the robustness and stability of the target honeycomb bottom liner structure model.

[0099] Furthermore, the infrastructure model is optimized using multi-objective optimization parameters according to the following formula:

[0100]

[0101] Wherein, var. represents the multi-objective optimization parameters, including: t is the thickness of the cross-section, h is the core height of the cross-section, and a is the core side length of the cross-section; target represents the optimization objective, including: s is the variable, stress is the structural strength, k is the stiffness, n is the fatigue life, b is the impact resistance, and mass is the weight.

[0102] In the above implementation process, the basic structure model is optimized in multiple disciplines according to the multi-objective optimization parameters, so that the strength, stiffness, fatigue life and other data of the basic structure model can reach the optimal, thereby improving the practicality of the target honeycomb bottom liner structure model.

[0103] The optimal hexagonal core thickness, core height, core side length, and thin plate thickness are obtained to determine the optimal target honeycomb bottom protection plate structure model. Based on the target honeycomb bottom protection plate structure model, the magnesium alloy honeycomb sandwich structure of the battery pack is constructed.

[0104] Example 2

[0105] In order to execute the method corresponding to Embodiment 1 above and achieve the corresponding functions and technical effects, a device for constructing a honeycomb bottom protective plate structure model of a battery is provided below, such as... Figure 2 As shown, the device includes:

[0106] Module 1 is used to build the basic structural model of the honeycomb bottom cover of the battery. The basic structural model of the bottom cover is a sandwich structure.

[0107] Calculation module 2 is used to perform shape mechanics calculations on the interlayer cross-section of the basic structure model of the honeycomb bottom liner to obtain the cross-sectional shape of the basic structure model.

[0108] Optimization module 3 is used to perform multi-objective optimization on the basic structure model based on the cross-sectional shape to obtain the target honeycomb bottom liner structure model.

[0109] In the above implementation process, shape mechanics calculations are performed on the sandwich cross-section of the basic structural model to obtain the most suitable shape of the sandwich cross-section. Then, multi-objective optimization is performed based on the cross-section shape to improve the construction efficiency of the battery's honeycomb bottom protection plate structure model, improve the durability of the honeycomb bottom protection plate structure, and expand the capacity of the battery cell.

[0110] Furthermore, the computing module 2 is also used for:

[0111] Obtain basic data of the interlayer cross-section;

[0112] The area of ​​the interlayer cross-section is obtained based on the basic data;

[0113] The moment of inertia and section modulus of bending are obtained from the area.

[0114] The cross-sectional shape of the foundation structure model is obtained based on the moment of inertia and the section modulus of bending.

[0115] In the above implementation process, the area, moment of inertia and section modulus of the sandwich section are obtained from the basic data of the sandwich section. This can ensure the best structural performance within a certain range of materials and make the obtained section shape more in line with the requirements of structural mechanical performance.

[0116] Furthermore, the computing module 2 is also used for:

[0117] Obtain data on the relationship between the number of cross-sectional edges and the moment of inertia of the interlayer section;

[0118] Obtain data on the relationship between the number of cross-sectional edges of the mezzanine section and the flexural section modulus;

[0119] The cross-sectional shape of the foundation structure model is obtained based on the relationship between the number of cross-sectional sides of the mezzanine section and the moment of inertia, and the relationship between the number of cross-sectional sides of the mezzanine section and the section modulus of bending.

[0120] In the above implementation process, based on the relationship data between the number of cross-sectional edges and the moment of inertia and the relationship data between the number of cross-sectional edges and the section modulus of bending, the relationship between the change in the number of cross-sectional edges and the moment of inertia and the section modulus of bending can be obtained, thus achieving the optimal cross-sectional shape.

[0121] Furthermore, optimization module 3 is also used for:

[0122] Obtain multi-objective optimization parameters;

[0123] The basic structure model is optimized using multi-objective optimization parameters to obtain the target honeycomb bottom liner structure model.

[0124] In the above implementation process, multi-objective optimization of the basic structure model based on multi-objective optimization parameters can optimize the performance of the target honeycomb bottom liner structure model in multiple disciplines, ensuring the robustness and stability of the target honeycomb bottom liner structure model.

[0125] Furthermore, optimization module 3 is also used to perform multi-objective optimization on the infrastructure model based on the multi-objective optimization parameters according to the following formula:

[0126]

[0127] Wherein, var. represents the multi-objective optimization parameters, including: t is the thickness of the cross-section, h is the core height of the cross-section, and a is the core side length of the cross-section; target represents the optimization objective, including: s is the variable, stress is the structural strength, k is the stiffness, n is the fatigue life, b is the impact resistance, and mass is the weight.

[0128] In the above implementation process, the basic structure model is optimized in multiple disciplines according to the multi-objective optimization parameters, so that the strength, stiffness, fatigue life and other data of the basic structure model can reach the optimal, thereby improving the practicality of the target honeycomb bottom liner structure model.

[0129] The apparatus for constructing the honeycomb bottom cover structure model of the battery described above can implement the method of Embodiment 1. The options in Embodiment 1 are also applicable to this embodiment, and will not be described in detail here.

[0130] The remaining contents of this embodiment can be referred to the contents of Embodiment 1 above, and will not be repeated in this embodiment.

[0131] Example 3

[0132] This application provides an electronic device, including a memory and a processor. The memory stores a computer program, and the processor runs the computer program to enable the electronic device to perform the method for constructing a honeycomb bottom cover structure model of a battery according to Embodiment 1.

[0133] Alternatively, the aforementioned electronic device may be a server.

[0134] Please see Figure 3 , Figure 3This is a schematic diagram illustrating the structural composition of an electronic device provided in an embodiment of this application. The electronic device may include a processor 31, a communication interface 32, a memory 33, and at least one communication bus 34. The communication bus 34 is used to enable direct communication between these components. In this embodiment, the communication interface 32 is used for signaling or data communication with other node devices. The processor 31 may be an integrated circuit chip with signal processing capabilities.

[0135] The processor 31 described above can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor can be a microprocessor, or the processor 31 can be any conventional processor.

[0136] The memory 33 may be, but is not limited to, random access memory (RAM), read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), etc. The memory 33 stores computer-readable instructions. When these computer-readable instructions are executed by the processor 31, the device can perform the aforementioned operations. Figure 1 The various steps involved in the method implementation examples.

[0137] Optionally, the electronic device may also include a storage controller and an input / output unit. The memory 33, storage controller, processor 31, peripheral interface, and input / output unit are electrically connected directly or indirectly to each other to achieve data transmission or interaction. For example, these components can be electrically connected to each other via one or more communication buses 34. The processor 31 is used to execute executable modules stored in the memory 33, such as software function modules or computer programs included in the device.

[0138] Input / output units are used to enable users to create tasks and set optional start periods or preset execution times for those tasks, facilitating user-server interaction. Input / output units can be, but are not limited to, a mouse and keyboard.

[0139] Understandable. Figure 3 The structure shown is for illustrative purposes only; the electronic device may also include components that are more advanced than those shown. Figure 3 The more or fewer components shown, or having the same Figure 3 The different configurations shown. Figure 3 The components shown can be implemented using hardware, software, or a combination thereof.

[0140] In addition, this application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the method for constructing the honeycomb bottom cover structure model of the battery in Embodiment 1.

[0141] This application also provides a computer program product that, when run on a computer, causes the computer to perform the method described in the method embodiment.

[0142] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can also be implemented in other ways. The apparatus embodiments described above are merely illustrative; for example, the flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than those marked in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram and / or flowchart, and combinations of blocks in block diagrams and / or flowcharts, can be implemented using dedicated hardware-based apparatus that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

[0143] In addition, the functional modules in the various embodiments of this application can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0144] If the aforementioned functions are implemented as software functional modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, external hard drives, ROM, RAM, magnetic disks, or optical disks.

[0145] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0146] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of protection of the claims.

[0147] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A method for constructing a honeycomb bottom protective plate structure model for a battery, characterized in that, The method includes: Construct a basic structural model of the honeycomb bottom protective plate of the battery, wherein the basic structural model of the bottom protective plate is a sandwich structure; Shape mechanics calculations are performed on the interlayer cross-section of the basic structural model of the honeycomb bottom liner to obtain the cross-sectional shape of the basic structural model; Based on the cross-sectional shape, the basic structure model is optimized using multiple objectives to obtain the target honeycomb bottom liner structure model. The step of performing shape mechanics calculations on the interlayer cross-section of the foundation structure model of the honeycomb bottom liner to obtain the cross-sectional shape of the foundation structure model includes: Obtain the basic data of the interlayer cross-section; The area of ​​the interlayer cross-section is obtained based on the aforementioned basic data; The moment of inertia and the section modulus of bending are obtained from the area. The cross-sectional shape of the foundation structure model is obtained based on the moment of inertia and the section modulus of bending. The step of obtaining the cross-sectional shape of the foundation structure model based on the moment of inertia and the flexural section modulus includes: Obtain the relationship data between the number of cross-sectional edges of the sandwich section and the moment of inertia; Obtain the relationship data between the number of cross-sectional edges of the sandwich section and the section modulus of bending resistance; The cross-sectional shape of the foundation structure model is obtained based on the relationship between the number of cross-sectional sides of the sandwich section and the moment of inertia, and the relationship between the number of cross-sectional sides of the sandwich section and the section modulus of bending. Based on the hexagonal cross-section of the biomimetic honeycomb structure as the main body of the sandwich structure, the upper and lower closed thin plates provide vertical structural support and installation plane, and the lightest metal magnesium alloy material is used as the lightweight material. The mechanical calculation of the honeycomb core structure from triangular core, square core, hexagonal core to circular core is used to determine the basic structural model with hexagonal core as honeycomb bottom protection plate.

2. The method for constructing the honeycomb bottom protective plate structure model of the battery according to claim 1, characterized in that, The step of performing multi-objective optimization on the basic structure model based on the cross-sectional shape to obtain the target honeycomb bottom liner structure model includes: Obtain multi-objective optimization parameters; The basic structure model is optimized using the multi-objective optimization parameters to obtain the target honeycomb bottom liner structure model.

3. The method for constructing the honeycomb bottom protective plate structure model of the battery according to claim 2, characterized in that, The infrastructure model is optimized using the multi-objective optimization parameters according to the following formula: ； Wherein, var. represents the multi-objective optimization parameters, including: t is the thickness of the cross-section shape, h is the core height of the cross-section shape, a is the core side length of the cross-section shape, and s is a variable; target represents the optimization objective, including: stress is the structural strength, k is the stiffness, b is the impact resistance, and mass is the weight.

4. A device for constructing a honeycomb bottom protective plate structure model of a battery, characterized in that, The device includes: A construction module is used to construct the basic structural model of the honeycomb bottom protective plate of the battery, wherein the basic structural model of the bottom protective plate is a sandwich structure; The calculation module is used to perform shape mechanics calculations on the interlayer cross-section of the basic structure model of the honeycomb bottom liner to obtain the cross-sectional shape of the basic structure model. The optimization module is used to perform multi-objective optimization on the basic structure model according to the cross-sectional shape to obtain the target honeycomb bottom liner structure model; The computing module is also used for Obtain the basic data of the interlayer cross-section; The area of ​​the interlayer cross-section is obtained based on the aforementioned basic data; The moment of inertia and the section modulus of bending are obtained from the area. The cross-sectional shape of the foundation structure model is obtained based on the moment of inertia and the section modulus of bending. Obtain the relationship data between the number of cross-sectional edges of the sandwich section and the moment of inertia; Obtain the relationship data between the number of cross-sectional edges of the sandwich section and the section modulus of bending resistance; The cross-sectional shape of the foundation structure model is obtained based on the relationship between the number of cross-sectional sides of the sandwich section and the moment of inertia, and the relationship between the number of cross-sectional sides of the sandwich section and the section modulus of bending. The device is also used for: Based on the hexagonal cross-section of the biomimetic honeycomb structure as the main body of the sandwich structure, the upper and lower closed thin plates provide vertical structural support and installation plane, and the lightest metal magnesium alloy material is used as the lightweight material. The mechanical calculation of the honeycomb core structure from triangular core, square core, hexagonal core to circular core is used to determine the basic structural model with hexagonal core as honeycomb bottom protection plate.

5. An electronic device, characterized in that, The device includes a memory and a processor, the memory being used to store a computer program, and the processor running the computer program to cause the electronic device to perform a method for constructing a honeycomb bottom cover structure model of a battery according to any one of claims 1 to 3.

6. A computer-readable storage medium, characterized in that, It stores a computer program, which, when executed by a processor, implements a method for constructing a honeycomb bottom cover structure model of the battery as described in any one of claims 1 to 3.

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