Method and device for determining manufacturing parameters of bottom protective plate of power battery

Abstract

The invention provides a method and device for determining manufacturing parameters of a power battery bottom protection plate, and the method comprises the steps: responding to the obtained function demand information for indicating the design and manufacturing of the power battery bottom protection plate, and correspondingly obtaining to-be-optimized manufacturing parameters according to the function demand information; constructing a bottom guard plate simulation model corresponding to the to-be-optimized manufacturing parameters, and analyzing and optimizing the bottom guard plate simulation model to optimize the to-be-optimized manufacturing parameters to obtain to-be-tested manufacturing parameters; constructing an actually-measured physical bottom protection plate corresponding to the to-be-measured manufacturing parameters, performing function test on the actually-measured physical bottom protection plate, and verifying whether a test result of the function test meets a function condition corresponding to the function demand information or not; and when the test result meets the functional conditions, determining the to-be-tested manufacturing parameters as target manufacturing parameters for designing and manufacturing the power battery bottom protection plate. By means of the method, the efficiency of designing and manufacturing the power battery bottom protection plate is improved, and then the cost input for designing and manufacturing the power battery bottom protection plate is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power battery bottom guard plate, in particular to a method and device for determining manufacturing parameters of a power battery bottom guard plate. BACKGROUND

[0002] During the driving process of a vehicle, once the bottom of the vehicle is hit, the impact force will be directly transmitted to the power battery monomer through the battery box, causing the power battery monomer to deform and posing a safety hazard. Therefore, it is necessary to add a bottom guard plate to the power battery pack to improve the safety of the power battery.

[0003] Currently, when designing a bottom guard plate for a power battery, various factors such as material, thickness size, combination method of different materials, and installation scheme need to be considered. The design and manufacturing method of the power battery bottom guard plate can only be designed and trial-produced according to experience, and then tested to verify the performance. The manufacturing parameters need to be repeatedly modified and trial-produced for verification, so that the design of the power battery bottom guard plate lacks a unified standard, reducing the efficiency of designing and manufacturing the power battery bottom guard plate, and further increasing the cost investment of designing and manufacturing the power battery bottom guard plate. SUMMARY

[0004] Therefore, the purpose of the present application is to provide a method and device for determining manufacturing parameters of a power battery bottom guard plate. By obtaining the to-be-optimized manufacturing parameters corresponding to the functional requirement information for designing and manufacturing the power battery bottom guard plate, the bottom guard plate simulation model constructed by the to-be-optimized manufacturing parameters is analyzed and optimized to obtain the to-be-tested manufacturing parameters, and the actual physical bottom guard plate constructed by the to-be-tested manufacturing parameters is functionally tested to verify whether the test results meet the functional conditions corresponding to the functional requirement information. When the functional conditions are met, the to-be-tested manufacturing parameters are determined as the target manufacturing parameters for designing and manufacturing the power battery bottom guard plate, improving the efficiency of designing and manufacturing the power battery bottom guard plate, and further reducing the cost investment of designing and manufacturing the power battery bottom guard plate.

[0005] The present application provides a method for determining manufacturing parameters of a power battery bottom guard plate, which comprises: In response to obtaining the functional requirement information for designing and manufacturing the power battery bottom guard plate, the to-be-optimized manufacturing parameters of the current test cycle are obtained corresponding to the functional requirement information; A bottom guard plate simulation model corresponding to the to-be-optimized manufacturing parameters is constructed, and the bottom guard plate simulation model is analyzed and optimized to optimize the to-be-optimized manufacturing parameters, obtaining the to-be-tested manufacturing parameters of the current test cycle; An actual physical bottom guard plate corresponding to the to-be-tested manufacturing parameters is constructed, and the actual physical bottom guard plate is functionally tested to verify whether the test results of the functional test of the current test cycle meet the functional conditions corresponding to the functional requirement information. determining the to-be-tested manufacturing parameter as a target manufacturing parameter for designing and manufacturing the bottom plate of the power battery when the test result satisfies the function condition.

[0006] Further, when the test result does not satisfy the function condition, the determining method further comprises: determining the to-be-tested manufacturing parameter as a to-be-optimized manufacturing parameter of a next test cycle, and performing analysis optimization and function test of the next test cycle based on the to-be-optimized manufacturing parameter of the next test cycle, to verify whether a test result of the function test of the next test cycle satisfies the function condition corresponding to the function requirement information.

[0007] Further, the to-be-optimized manufacturing parameter at least comprises an outer envelope size parameter, a mechanical protection capability parameter, a weight range interval, a cost range interval and a material selection.

[0008] Further, the bottom plate simulation model corresponding to the to-be-optimized manufacturing parameter is constructed, and the bottom plate simulation model is analyzed and optimized to optimize the to-be-optimized manufacturing parameter, to obtain the to-be-tested manufacturing parameter of the current test cycle, comprising: constructing a corresponding bottom plate simulation model according to the to-be-optimized manufacturing parameter by using a preset virtual machine; performing mechanical protection analysis on the bottom plate simulation model by using a preset CAE tool to obtain an analysis result; optimizing the bottom plate simulation model based on the analysis result to optimize the to-be-optimized manufacturing parameter, to obtain the to-be-tested manufacturing parameter of the current test cycle.

[0009] Further, the real physical bottom plate corresponding to the to-be-tested manufacturing parameter is constructed, and the real physical bottom plate is functionally tested to verify whether the test result of the function test of the current test cycle satisfies the function condition corresponding to the function requirement information, comprising: constructing a corresponding real physical bottom plate according to the to-be-tested manufacturing parameter by using a preset physical machine; performing function test on the real physical bottom plate according to the function requirement information to obtain a test parameter corresponding to the to-be-tested manufacturing parameter; determining the test result of the current test cycle by using a function requirement function corresponding to the function requirement information based on the test parameter; judging whether the test result belongs to a result range corresponding to the function requirement information; if the test result belongs to the result range, it is determined that the test result satisfies the function condition; if the test result does not belong to the result range, it is determined that the test result does not satisfy the function condition.

[0010] The embodiment of the application further provides a determination device of manufacturing parameters of a power battery bottom guard plate. The function requirement module is configured to, in response to obtaining function requirement information indicating design and manufacture of the power battery bottom guard plate, acquire the to-be-optimized manufacturing parameter of the current test period according to the function requirement information; The virtual machine analysis module is configured to construct a bottom guard plate simulation model corresponding to the to-be-optimized manufacturing parameter, and analyze and optimize the bottom guard plate simulation model, so as to optimize the to-be-optimized manufacturing parameter and obtain the to-be-tested manufacturing parameter of the current test period. The physical machine test module is configured to construct a measured physical bottom guard plate corresponding to the to-be-tested manufacturing parameter, and perform function test on the measured physical bottom guard plate, so as to verify whether the test result of the function test of the current test period meets the function condition corresponding to the function requirement information. The parameter determination module is configured to, when the test result meets the function condition, determine the to-be-tested manufacturing parameter as a target manufacturing parameter for designing and manufacturing the power battery bottom guard plate.

[0011] Further, the determination device further comprises an iterative optimization module, which is configured to: When the test result does not meet the function condition, determine the to-be-tested manufacturing parameter as a to-be-optimized manufacturing parameter of a next test period, and perform analysis and optimization and function test of the next test period based on the to-be-optimized manufacturing parameter of the next test period, so as to verify whether a test result of the function test of the next test period meets the function condition corresponding to the function requirement information.

[0012] Further, when the virtual machine analysis module is configured to construct a bottom guard plate simulation model corresponding to the to-be-optimized manufacturing parameter, and analyze and optimize the bottom guard plate simulation model, so as to optimize the to-be-optimized manufacturing parameter and obtain the to-be-tested manufacturing parameter of the current test period, the virtual machine analysis module is configured to: construct a corresponding bottom guard plate simulation model according to the to-be-optimized manufacturing parameter by using a preset virtual machine; perform mechanical protection analysis on the bottom guard plate simulation model by using a preset CAE tool, to obtain an analysis result; based on the analysis result, optimize the bottom guard plate simulation model, so as to optimize the to-be-optimized manufacturing parameter and obtain the to-be-tested manufacturing parameter of the current test period.

[0013] Further, the physical machine test module is configured to: construct a measured physical bottom guard plate corresponding to the to-be-tested manufacturing parameter according to the preset physical machine; perform a function test on the measured physical bottom guard plate according to the function requirement information, to obtain a test parameter corresponding to the to-be-tested manufacturing parameter; determine a test result of the current test cycle based on the test parameter and a function requirement function corresponding to the function requirement information; determine whether the test result belongs to a result range corresponding to the function requirement information; if the test result belongs to the result range, it is determined that the test result satisfies the function condition; if the test result does not belong to the result range, it is determined that the test result does not satisfy the function condition.

[0014] The embodiment of the application also provides a power battery bottom guard plate, which is designed and manufactured by performing the steps of the method for determining the manufacturing parameter of the power battery bottom guard plate.

[0015] The embodiment of the application also provides a power battery, which uses the power battery bottom guard plate.

[0016] The embodiment of the application also provides an electronic device, which comprises a processor, a memory and a bus. The memory stores machine readable instructions executable by the processor. When the electronic device is running, the processor and the memory communicate through the bus. When the machine readable instructions are executed by the processor, the steps of the method for determining the manufacturing parameter of the power battery bottom guard plate are performed.

[0017] The embodiment of the application also provides a computer readable storage medium, which stores a computer program. When the computer program is executed by the processor, the steps of the method for determining the manufacturing parameter of the power battery bottom guard plate are performed.

[0018] The method and device for determining manufacturing parameters of a power battery bottom protection plate provided by the embodiment of the application, the method comprises: in response to obtaining functional requirement information indicating design and manufacture of a power battery bottom protection plate, obtaining to-be-optimized manufacturing parameters corresponding to a current test cycle according to the functional requirement information; constructing a bottom protection plate simulation model corresponding to the to-be-optimized manufacturing parameters, and performing analysis and optimization on the bottom protection plate simulation model to optimize the to-be-optimized manufacturing parameters, so as to obtain to-be-tested manufacturing parameters of the current test cycle; constructing a measured physical bottom protection plate corresponding to the to-be-tested manufacturing parameters, and performing functional testing on the measured physical bottom protection plate to verify whether a test result of the functional testing of the current test cycle meets functional conditions corresponding to the functional requirement information; and when the test result meets the functional conditions, determining the to-be-tested manufacturing parameters as target manufacturing parameters for designing and manufacturing the power battery bottom protection plate.

[0019] Compared with the method in the prior art, which is designed and trial-produced according to experience, and then tested to verify performance, needs to repeatedly modify manufacturing parameters and trial-produce verification for multiple times, the to-be-optimized manufacturing parameters are obtained according to the functional requirement information indicating design and manufacture of a power battery bottom protection plate, the to-be-tested manufacturing parameters are obtained by performing analysis and optimization on a bottom protection plate simulation model constructed by the to-be-optimized manufacturing parameters, the measured physical bottom protection plate constructed by the to-be-tested manufacturing parameters is tested, whether the test result meets the functional conditions corresponding to the functional requirement information is verified, and when the test result meets the functional conditions, the to-be-tested manufacturing parameters are determined as the target manufacturing parameters for designing and manufacturing the power battery bottom protection plate, which improves the efficiency of designing and manufacturing the power battery bottom protection plate, and further reduces the cost investment of designing and manufacturing the power battery bottom protection plate.

[0020] In order to make the above objectives, characteristics and advantages of the application more apparent, clear and easy to understand, the following preferred embodiments are specifically described below, and the accompanying drawings are referred to, and the detailed description is as follows. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the application, and therefore should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without paying creative labor on the basis of these drawings.

[0022] Figure 1 One of the flowcharts of the method for determining manufacturing parameters of a power battery bottom protection plate provided by the embodiment of the application; Figure 2 The second flowchart of the method for determining manufacturing parameters of a power battery bottom protection plate provided by the embodiment of the application; Figure 3Structure schematic view of a device for determining manufacturing parameters of a power battery bottom protection plate according to an embodiment of the present application; Figure 4 Structure schematic view of a device for determining manufacturing parameters of a power battery bottom protection plate according to an embodiment of the present application; Figure 5 Structure schematic view of a power battery bottom protection plate according to an embodiment of the present application; Figure 6 Structure schematic view of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0023] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the accompanying drawings for the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, every other embodiment obtained by a person skilled in the art without creative work belongs to the scope of protection of the present application.

[0024] It is found through research that, during driving of a vehicle, once the bottom of the vehicle is impacted, the impact force will be directly transmitted to the power battery monomer through the battery box, causing the power battery monomer to deform and thus posing a safety hazard. Therefore, it is necessary to add a bottom protection plate to the power battery pack to improve the safety of the power battery.

[0025] For example, for a CTP power battery pack, CTP (Cell to Pack) technology is an innovative battery pack design method aiming to improve the energy density of the power battery pack, reduce the cost and simplify the manufacturing process. The traditional power battery pack is usually composed of multiple modules, each module containing a plurality of battery cells, while the CTP technology directly integrates the battery cells into the power battery pack, the bottom surface of the power battery monomer directly adheres to the bottom surface of the battery box, and the buffer gap is cancelled. In this way, the middle module link is saved, thereby realizing more efficient use of space and reducing the overall weight. However, when the bottom of the vehicle is impacted, the impact force generated by the impact will be directly transmitted to the power battery monomer through the battery box, reducing the safety of the power battery.

[0026] Currently, when designing the bottom guard plate of the power battery, various factors need to be considered, such as material, thickness size, combination mode of different materials, and installation scheme, and the way of designing and manufacturing the bottom guard plate of the power battery can only be designed and trial-produced according to experience, and then tested to verify the performance, which needs to modify the manufacturing parameters repeatedly and trial-produce verification, so that the design of the bottom guard plate of the power battery lacks a unified standard, reduces the efficiency of designing and manufacturing the bottom guard plate of the power battery, and further increases the cost investment of designing and manufacturing the bottom guard plate of the power battery.

[0027] Based on this, the embodiment of the present application provides a method for determining manufacturing parameters of a power battery bottom guard plate, which comprises the following steps:

[0028] Please refer to Figure 1 , Figure 1 The flowchart of the method for determining manufacturing parameters of a power battery bottom guard plate provided by the embodiment of the present application is shown in FIG. 1. Figure 1 The method for determining manufacturing parameters of a power battery bottom guard plate provided by the embodiment of the present application comprises the following steps: S101, in response to obtaining the functional requirement information indicating the design and manufacture of the power battery bottom guard plate, the manufacturing parameters to be optimized in the current test cycle are obtained according to the functional requirement information.

[0029] It should be noted that the method for determining manufacturing parameters of a power battery bottom guard plate provided by the embodiment of the present application determines the target manufacturing parameters for designing and manufacturing the power battery bottom guard plate through optimization of at least one test cycle, and then designs and manufactures the corresponding target power battery bottom guard plate according to the target manufacturing parameters.

[0030] In this step, in the specific implementation, first, the functional requirement information indicating the design and manufacture of the power battery bottom guard plate is received externally; then, in response to obtaining the functional requirement information, the functional requirement information is analyzed to determine the manufacturing parameters to be optimized in the current test cycle; finally, the pre-set manufacturing parameters to be optimized are obtained or the manufacturing parameters to be optimized are obtained externally.

[0031] The function requirement information at least includes a function type of the power battery bottom guard plate expected to be designed and manufactured, a function requirement function corresponding to the function type, a manufacturing parameter to be optimized corresponding to the function type, and a design parameter, and the like.

[0032] In the embodiment of the present application, the manufacturing parameter to be optimized at least includes an outer envelope size parameter, a mechanical protection capability parameter, a weight range interval, a cost range interval, and a material selection.

[0033] The outer envelope size parameter at least includes a length, a width, and a thickness of the power battery bottom guard plate, and the like; the mechanical protection capability parameter represents the capability of the power battery bottom guard plate to resist external impact and not to be cracked after being impacted (for example, greater than or equal to 150 J); the weight range interval and the cost range interval are both minimum range intervals determined after the outer envelope size parameter and the mechanical protection capability parameter are determined; and the material selection at least includes at least one of a steel plate, an aluminum plate, a composite material, and a honeycomb material.

[0034] S102, a bottom guard plate simulation model corresponding to the manufacturing parameter to be optimized is constructed, and the bottom guard plate simulation model is analyzed and optimized to optimize the manufacturing parameter to be optimized, so as to obtain the manufacturing parameter to be tested in the current test period.

[0035] In the embodiment of the present application, the bottom guard plate simulation model corresponding to the manufacturing parameter to be optimized is constructed by using a preset virtual mechanism, and the bottom guard plate simulation model is analyzed and optimized by using a preset CAE tool.

[0036] In one embodiment of the present application, in the specific implementation, step S102 can include: S1021, a corresponding bottom guard plate simulation model is constructed by using a preset virtual machine according to the manufacturing parameter to be optimized.

[0037] In the step, in the specific implementation, first, the manufacturing parameter to be optimized is input into the preset virtual machine; then, the virtual machine simulates the injection molding of the power battery bottom guard plate; and finally, the simulated power battery bottom guard plate after the injection molding is 3D optimized to obtain the bottom guard plate simulation model in the form of a 3D model.

[0038] S1022, the bottom guard plate simulation model is analyzed and optimized by using a preset CAE tool to obtain an analysis result.

[0039] In the embodiment of the present application, the CAE (Computer-Aided Engineering) tool is a computer-aided engineering technology for simulating, analyzing, optimizing, and verifying product design by using a computer software.

[0040] In this step, in a specific implementation, first, the bottom protection plate simulation model is input into a preset CAE tool; then, the CAE tool first divides the bottom protection plate simulation model into a finite element mesh and defines relevant parameters; then, the CAE tool calls a solver to solve the finite element mesh by using numerical methods such as a finite element method (FEA) and a finite volume method (FVM); finally, mechanical protection analysis is performed on the solving result to obtain an analysis result.

[0041] S1023, based on the analysis result, optimizing the bottom protection plate simulation model to optimize the to-be-optimized manufacturing parameter, to obtain the to-be-tested manufacturing parameter of the current test period.

[0042] In this step, the bottom protection plate simulation model is optimized based on the analysis result of the mechanical protection analysis on the bottom protection plate simulation model, to determine the to-be-tested manufacturing parameter of the to-be-optimized manufacturing parameter after the optimization in the previous test period.

[0043] The to-be-optimized manufacturing parameter and the to-be-tested manufacturing parameter correspond in parameter type.

[0044] S103, constructing a measured physical bottom protection plate corresponding to the to-be-tested manufacturing parameter, and performing a function test on the measured physical bottom protection plate, to verify whether the test result of the function test in the current test period meets the function condition corresponding to the function requirement information.

[0045] In an embodiment of the present application, after the bottom protection plate simulation model is built by using the virtual machine and the to-be-tested manufacturing parameter is determined by optimizing the bottom protection plate simulation model, a physical machine is used to construct a corresponding measured physical bottom protection plate according to the to-be-tested manufacturing parameter, and a function test is performed on the measured physical bottom protection plate, to verify whether the measured physical bottom protection plate according to the to-be-tested manufacturing parameter meets the function condition of the function requirement information.

[0046] The physical machine and the virtual machine are in a mapping relationship, that is, the measured physical bottom protection plate constructed by the physical machine is a physical mapping based on the bottom protection plate simulation model built by the virtual machine.

[0047] Here, the measured physical bottom protection plate can include a physical bottom protection plate in a test bench, can include a bottom protection plate of a power battery in use, and can include other physical bottom protection plates, which are not limited in the present application.

[0048] In an embodiment of the present application, in a specific implementation, step S103 can include: S1031, constructing a corresponding measured physical bottom protection plate according to the to-be-tested manufacturing parameter by using a preset physical machine.

[0049] In this step, for the composite material bottom plate part in the power battery bottom plate, a corresponding mold is made according to the to-be-tested manufacturing parameter, and based on the injection molding parameters (melt temperature, injection speed, and holding pressure) corresponding to the to-be-tested manufacturing parameter, raw materials are injected into the mold, and after cooling, the sample part is taken out, surface defects are checked, and the measured physical bottom plate part in the composite material bottom plate is obtained.

[0050] Further, for the metal bottom plate in the power battery bottom plate, a CNC machine or a laser cutting machine in a physics machine is used to process a metal plate, a reinforcing rib structure part is reserved, and a complex geometry is directly manufactured by 3D printing, to obtain the measured physical metal bottom plate part in the bottom plate.

[0051] In this way, the composite material bottom plate part and the metal bottom plate part are combined to obtain a measured physical bottom plate corresponding to the to-be-tested manufacturing parameter.

[0052] S1032, performing a function test on the measured physical bottom plate according to the function requirement information to obtain a test parameter corresponding to the to-be-tested manufacturing parameter.

[0053] In this step, the measured physical bottom plate is functionally tested according to the function type in the function requirement information, to obtain a test parameter corresponding to the to-be-tested manufacturing parameter, i.e., the test performance of the measured physical bottom plate under each function type.

[0054] S1033, determining a test result of the current test cycle based on the test parameter and using a function requirement function corresponding to the function requirement information.

[0055] Here, the to-be-tested manufacturing parameter corresponds to the to-be-tested manufacturing parameter in the parameter type.

[0056] In the embodiments of the present application, when the to-be-tested manufacturing parameter includes an outer envelope size parameter, a mechanical protection capability parameter, a weight range interval, a cost range interval, and a material selection, the expression of the function requirement function corresponding to the function requirement information is as follows.

[0057] .

[0058] wherein, represents the test result; represents the outer envelope size parameter; represents the mechanical protection capability parameter; represents the weight range interval; represents the cost range interval; represents the material selection; represents the weighting coefficient corresponding to the outer envelope size parameter; represents the weighting coefficient corresponding to the mechanical protection capability parameter; a weight coefficient corresponding to a weight range interval; a weight coefficient corresponding to a cost range interval; a weight coefficient corresponding to a material selection, + + + + =1.

[0059] Here, the parameter with a large weight coefficient is taken as a key attention item, and the control variable method is used for test verification, so as to select the weight coefficient corresponding to each to-be-tested manufacturing parameter.

[0060] S1034, judging whether the test result belongs to the result range corresponding to the function requirement information.

[0061] In this step, the test result of the current test cycle is compared with the result range included in the function requirement information, so as to determine whether the test result belongs to the result range corresponding to the function requirement information.

[0062] S1035, if the test result belongs to the result range, it is determined that the test result satisfies the function condition.

[0063] S1036, if the test result does not belong to the result range, it is determined that the test result does not satisfy the function condition.

[0064] S104, when the test result satisfies the function condition, the to-be-tested manufacturing parameter is determined as a target manufacturing parameter for designing and manufacturing the power battery bottom plate.

[0065] In this step, when the test result of the current test cycle satisfies the function condition corresponding to the function requirement information, the iteration optimization of the test cycle ends, the to-be-tested manufacturing parameter of the current test cycle is determined as a target manufacturing parameter for designing and manufacturing the power battery bottom plate, and then the target manufacturing parameter is used to design and manufacture the power battery bottom plate.

[0066] Optionally, please refer to Figure 2 , Figure 2 is a flowchart of a method for determining a manufacturing parameter of a power battery bottom plate provided by an embodiment of the present application. As shown in Figure 2 , in addition to the method for determining the manufacturing parameter of the power battery bottom plate described in steps S101 to S104, the embodiment of the present application further includes step S105, specifically, step S105 is used to illustrate the method for determining the manufacturing parameter of the power battery bottom plate when the test result of the function test of the current test cycle does not satisfy the function condition corresponding to the function requirement information, so as to improve the accuracy of determining the manufacturing parameter of the power battery bottom plate.

[0067] S105, determine the to-be-tested manufacturing parameter as the to-be-optimized manufacturing parameter of the next test period, and perform analysis optimization and functional test of the next test period based on the to-be-optimized manufacturing parameter of the next test period, to verify whether the test result of the functional test of the next test period meets the functional condition corresponding to the functional requirement information.

[0068] In this step, when the test result of the current test period does not meet the functional condition corresponding to the functional requirement information, the iterative optimization of the next test period is continued, and in the next test period, the to-be-tested manufacturing parameter is determined as the to-be-optimized manufacturing parameter of the next test period.

[0069] Further, a bottom plate simulation model corresponding to the to-be-optimized manufacturing parameter is constructed, and the bottom plate simulation model is analyzed and optimized to optimize the to-be-optimized manufacturing parameter, to obtain the to-be-tested manufacturing parameter of the next test period.

[0070] Further, a measured physical bottom plate corresponding to the to-be-tested manufacturing parameter of the next test period is constructed, and the measured physical bottom plate is subjected to functional test to verify whether the test result of the functional test of the next test period meets the functional condition corresponding to the functional requirement information.

[0071] Further, if the test result of the functional test of the next test period meets the functional condition corresponding to the functional requirement information, the to-be-tested manufacturing parameter of the next test period is determined as the target manufacturing parameter for designing and manufacturing the bottom plate of the power battery; if the test result of the functional test of the next test period does not meet the functional condition corresponding to the functional requirement information, the iterative optimization of the next test period is continued.

[0072] The method for determining the manufacturing parameter of the bottom plate of the power battery provided by the embodiments of the present application, by acquiring the to-be-optimized manufacturing parameter corresponding to the functional requirement information for indicating the design and manufacturing of the bottom plate of the power battery, analyzing and optimizing the bottom plate simulation model constructed by the to-be-optimized manufacturing parameter, obtaining the to-be-tested manufacturing parameter, and performing functional test on the measured physical bottom plate constructed by the to-be-tested manufacturing parameter, verifying whether the test result meets the functional condition corresponding to the functional requirement information, and when the functional condition is met, determining the to-be-tested manufacturing parameter as the target manufacturing parameter for designing and manufacturing the bottom plate of the power battery, improves the efficiency of designing and manufacturing the bottom plate of the power battery, and further reduces the cost input of designing and manufacturing the bottom plate of the power battery.

[0073] Please refer to Figure 3 , Figure 4 , Figure 3 Fig. 1 is a structural schematic diagram of a device for determining a manufacturing parameter of a bottom plate of a power battery provided by an embodiment of the present application, Figure 4 Fig. 2 is a structural schematic diagram of a device for determining a manufacturing parameter of a bottom plate of a power battery provided by an embodiment of the present application.Figure 3 The determining apparatus 30 comprises: a function requirement module 310, configured to acquire a function requirement information indicating a design of a bottom guard plate of a power battery, and acquire a to-be-optimized manufacturing parameter of a current test period according to the function requirement information; a virtual machine analysis module 320, configured to construct a bottom guard plate simulation model corresponding to the to-be-optimized manufacturing parameter, and perform analysis optimization on the bottom guard plate simulation model to optimize the to-be-optimized manufacturing parameter, so as to obtain a to-be-tested manufacturing parameter of the current test period; a physical machine test module 330, configured to construct a measured physical bottom guard plate corresponding to the to-be-tested manufacturing parameter, and perform a function test on the measured physical bottom guard plate to verify whether a test result of the function test of the current test period meets a function condition corresponding to the function requirement information; a parameter determination module 340, configured to determine the to-be-tested manufacturing parameter as a target manufacturing parameter for designing and manufacturing the bottom guard plate of the power battery when the test result meets the function condition.

[0074] Further, as shown in Figure 4 The determining apparatus 30 further comprises an iterative optimization module 350, which is configured to: determine the to-be-tested manufacturing parameter as a to-be-optimized manufacturing parameter of a next test period when the test result does not meet the function condition, and perform analysis optimization and a function test of the next test period based on the to-be-optimized manufacturing parameter of the next test period to verify whether a test result of the function test of the next test period meets a function condition corresponding to the function requirement information.

[0075] Further, when the virtual machine analysis module 320 is configured to construct a bottom guard plate simulation model corresponding to the to-be-optimized manufacturing parameter, and perform analysis optimization on the bottom guard plate simulation model to optimize the to-be-optimized manufacturing parameter, so as to obtain a to-be-tested manufacturing parameter of a current test period, the virtual machine analysis module 320 is configured to: construct a corresponding bottom guard plate simulation model according to the to-be-optimized manufacturing parameter by using a preset virtual machine; perform mechanical protection analysis on the bottom guard plate simulation model by using a preset CAE tool to obtain an analysis result; perform optimization on the bottom guard plate simulation model based on the analysis result to optimize the to-be-optimized manufacturing parameter, so as to obtain the to-be-tested manufacturing parameter of the current test period.

[0076] Further, the physical machine test module 330 is configured to: construct a measured physical bottom guard plate corresponding to the to-be-tested manufacturing parameter according to the preset physical machine; perform a function test on the measured physical bottom guard plate according to the function requirement information, to obtain a test parameter corresponding to the to-be-tested manufacturing parameter; determine a test result of the current test cycle based on the test parameter and the function requirement function corresponding to the function requirement information; determine whether the test result belongs to a result range corresponding to the function requirement information; if the test result belongs to the result range, it is determined that the test result satisfies the function condition; if the test result does not belong to the result range, it is determined that the test result does not satisfy the function condition.

[0077] The determination device for the manufacturing parameter of the bottom guard plate of the power battery provided in the embodiments of the present application can obtain the to-be-optimized manufacturing parameter corresponding to the function requirement information for indicating the design and manufacturing of the bottom guard plate of the power battery, analyze and optimize the simulation model of the bottom guard plate constructed by the to-be-optimized manufacturing parameter, obtain the to-be-tested manufacturing parameter, perform a function test on the measured physical bottom guard plate constructed by the to-be-tested manufacturing parameter, verify whether the test result satisfies the function condition corresponding to the function requirement information, and determine the to-be-tested manufacturing parameter as the target manufacturing parameter for designing and manufacturing the bottom guard plate of the power battery when the function condition is satisfied. Therefore, the efficiency of designing and manufacturing the bottom guard plate of the power battery is improved, and the cost input for designing and manufacturing the bottom guard plate of the power battery is reduced.

[0078] Please refer to Figure 5 , Figure 5 The structure of the bottom guard plate of the power battery provided in the embodiments of the present application is shown in FIG. 1. Figure 5 As shown in FIG. 1, the bottom guard plate 10 of the power battery includes an impact-resistant layer 100, an energy-absorbing layer 200, a protective layer 300, and an impact strength sensor 400.

[0079] The impact-resistant layer 100, the energy-absorbing layer 200, and the protective layer 300 are mechanically connected as a whole. The impact strength sensor 400 is arranged on the protective layer 300 and is used to collect mechanical impact signals of the bottom guard plate 10 of the power battery.

[0080] Further, the power battery bottom guard plate 10 further comprises a bottom guard plate state management device, the impact strength sensor 400 transmits the mechanical impact signal to the bottom guard plate state management device, the bottom guard plate state management device is used for judging the state of the power battery bottom guard plate 10 according to the preset mechanical impact signal grading rule, determining the state data of the power battery bottom guard plate 10, and reporting the state data according to the preset reporting principle.

[0081] Further, the anti-impact layer 100 comprises an anti-impact surface layer 110 and an anti-impact inner layer 120.

[0082] The anti-impact surface layer 110 and the anti-impact inner layer 120 are connected by screwing or gluing, the anti-impact surface layer 110 is preferably a continuous fiber reinforced composite material, and the anti-impact inner layer 120 is preferably a steel plate; for example, the thickness of the anti-impact surface layer 110 is generally selected between 0.2 mm and 3 mm, and the thickness of the anti-impact inner layer 120 is generally selected between 0.5 mm and 2 mm.

[0083] Further, the energy absorption layer 200 is a honeycomb structure, and the honeycomb structure is composed of a plurality of hexagonal cells or cylindrical cells; for example, the wall thickness of one hexagonal cell or one cylindrical cell in the honeycomb structure is generally selected between 0.03 mm and 1.5 mm, the side length of the one hexagonal cell is generally selected between 1 mm and 5 mm, and the diameter of the one cylindrical cell is generally selected between 3 mm and 20 mm.

[0084] Further, the protective layer 300 is preferably a single-layer continuous fiber reinforced composite material; for example, the thickness of the protective layer 300 is generally selected between 0.2 mm and 2 mm.

[0085] The power battery bottom guard plate is designed and manufactured to perform the steps of the determination method of the power battery bottom guard plate manufacturing parameter in the method embodiment as described above Figure 1 and Figure 2 The specific implementation mode can be referred to the method embodiment, which will not be described here.

[0086] The embodiment of the application further provides a power battery, which uses the power battery bottom guard plate as described above Figure 5 .

[0087] Please refer to Figure 6 , Figure 6 for a structural schematic diagram of an electronic device provided by the embodiment of the application. As shown in Figure 6 , the electronic device 600 comprises a processor 610, a memory 620 and a bus 630.

[0088] The memory 620 stores machine readable instructions executable by the processor 610, when the electronic device 600 is running, the processor 610 and the memory 620 communicate through the bus 630, the machine readable instructions are executed by the processor 610, can execute the steps of the method embodiments as shown in the above Figure 1 And Figure 2 The steps of the method for determining the manufacturing parameters of the power battery bottom guard plate in the method embodiments are not repeated here.

[0089] The embodiment of the application further provides a computer readable storage medium, the computer readable storage medium stores a computer program, the computer program is run by the processor, and the steps of the method for determining the manufacturing parameters of the power battery bottom guard plate in the method embodiments as shown in the above Figure 1 And Figure 2 The steps of the method for determining the manufacturing parameters of the power battery bottom guard plate in the method embodiments are not repeated here.

[0090] The skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working process of the system, device and unit described above can refer to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0091] In several embodiments provided in the application, it should be understood that the disclosed system, device and method can be implemented by other ways. The device embodiments described above are only schematic, for example, the division of the units is only a logical function division, and actual implementation can have another division manner, and for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some communication interfaces, devices or units, and can be electrical, mechanical or other forms.

[0092] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, that is, they can be located in one place, or can be distributed on a plurality of network units. According to actual needs, part or all of the units can be selected to achieve the purpose of the embodiment scheme.

[0093] In addition, the functional units in each embodiment of the application can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit.

[0094] If the functions are realized in the form of software function units and sold or used as independent products, they can be stored in a nonvolatile computer readable storage medium executable by a processor. Based on this understanding, the technical solutions of the present application essentially or the parts of the prior art that make contributions or parts of the technical solutions can be embodied in the form of software products. The computer software product is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in the embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a magnetic disk or an optical disk, and various media that can store program codes.

[0095] Finally, it should be noted that: the above-described embodiments are only specific embodiments of the present application, which are used to illustrate the technical solutions of the present application, but not to limit them. The protection scope of the present application is not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can make modifications or easily think of changes to the technical solutions described in the foregoing embodiments within the technical scope disclosed by the present application, or make equivalent replacements to some of the technical features. The modifications, changes or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method for determining manufacturing parameters of a power battery bottom guard plate, characterized in that: The determination method includes: In response to obtaining functional requirement information indicating the design and manufacture of a power battery bottom guard plate, obtaining manufacturing parameters to be optimized for a current test cycle according to the functional requirement information; Constructing a bottom guard plate simulation model corresponding to the manufacturing parameters to be optimized, and analyzing and optimizing the bottom guard plate simulation model to optimize the manufacturing parameters to be optimized, thereby obtaining the manufacturing parameters to be tested in the current test cycle; Constructing a measured physical bottom guard plate corresponding to the manufacturing parameters to be tested, and performing a functional test on the measured physical bottom guard plate to verify whether the test result of the functional test in the current test cycle meets the functional condition corresponding to the functional requirement information; When the test result meets the functional condition, the manufacturing parameter to be tested is determined as the target manufacturing parameter for designing and manufacturing the power battery bottom guard plate.

2. The method according to claim 1, characterized in that When the test result does not meet the functional condition, the determination method further includes: The manufacturing parameters to be tested are determined as the manufacturing parameters to be optimized for the next test cycle, and based on the manufacturing parameters to be optimized for the next test cycle, analysis optimization and functional testing of the next test cycle are performed to verify whether the test results of the functional test of the next test cycle meet the functional conditions corresponding to the functional requirement information.

3. The method according to claim 1, characterized in that The manufacturing parameters to be optimized include at least: outer envelope size parameters, mechanical protection capability parameters, weight range, cost range and material selection.

4. The method according to claim 1, wherein The step of constructing a bottom guard plate simulation model corresponding to the manufacturing parameters to be optimized, and analyzing and optimizing the bottom guard plate simulation model to optimize the manufacturing parameters to be optimized, thereby obtaining the manufacturing parameters to be tested in the current test cycle, includes: Using a preset virtual machine to construct a corresponding bottom guard plate simulation model according to the manufacturing parameters to be optimized; Performing a mechanical protection analysis on the bottom guard plate simulation model using a preset CAE tool to obtain analysis results; Based on the analysis results, the bottom guard plate simulation model is optimized to optimize the manufacturing parameters to be optimized and obtain the manufacturing parameters to be tested in the current test cycle.

5. The method according to claim 1, wherein The step of constructing a measured physical bottom guard plate corresponding to the manufacturing parameters to be measured, and performing a functional test on the measured physical bottom guard plate to verify whether a test result of the functional test in a current test cycle meets a functional condition corresponding to the functional requirement information includes: Using a preset physical machine to construct a corresponding measured physical bottom guard plate according to the manufacturing parameters to be measured; Performing a functional test on the measured physical bottom guard plate according to the functional requirement information to obtain test parameters corresponding to the manufacturing parameters to be tested; Based on the test parameters, determining the test result of the current test cycle using the functional requirement function corresponding to the functional requirement information; Determining whether the test result falls within the result range corresponding to the functional requirement information; If the test result falls within the result range, determining that the test result meets the functional condition; If the test result does not fall within the result range, it is determined that the test result does not meet the functional condition.

6. A device for determining manufacturing parameters of a power battery bottom guard plate, characterized in that: The determining device comprises: A functional requirement module is configured to, in response to obtaining functional requirement information indicating the design and manufacture of a power battery bottom guard plate, obtain manufacturing parameters to be optimized for a current test cycle according to the functional requirement information; a virtual machine analysis module, configured to construct a bottom guard plate simulation model corresponding to the manufacturing parameters to be optimized, and analyze and optimize the bottom guard plate simulation model to optimize the manufacturing parameters to be optimized, thereby obtaining the manufacturing parameters to be tested in the current test cycle; A physical machine testing module is used to construct a measured physical bottom guard plate corresponding to the manufacturing parameters to be tested, and perform a functional test on the measured physical bottom guard plate to verify whether the test results of the functional test in the current test cycle meet the functional conditions corresponding to the functional requirement information; A parameter determination module is used to determine the manufacturing parameters to be tested as target manufacturing parameters for designing and manufacturing the power battery bottom guard plate when the test results meet the functional conditions.

7. A power battery bottom guard plate, characterized in that: When the power battery bottom guard plate is designed and manufactured, the steps of the method for determining the manufacturing parameters of the power battery bottom guard plate as described in any one of claims 1 to 5 are performed.

8. A power battery, characterized in that: The power battery uses the power battery bottom guard plate as claimed in claim 7.

9. An electronic device, characterized in that: include: A processor, a memory and a bus, wherein the memory stores machine-readable instructions executable by the processor. When the electronic device is running, the processor and the memory communicate through the bus. When the processor is running, the machine-readable instructions execute the steps of the method for determining the manufacturing parameters of the power battery bottom guard plate as described in any one of claims 1 to 5.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method for determining the manufacturing parameters of the power battery bottom guard plate according to any one of claims 1 to 5 are executed.

Images