Traction battery heat dissipation structure generation method and apparatus, and system, device and medium

Abstract

The embodiments of the present application relate to the technical field of new energy vehicles. Provided are a traction battery heat dissipation structure generation method and apparatus, and a system, a device and a medium. The method comprises: acquiring size information of a battery cell; determining design parameters of a Tesla valve on the basis of the size information, and generating a Tesla valve design scheme set; on the basis of a set screening rule, obtaining the optimal Tesla valve design scheme; and on the basis of the optimal Tesla valve design scheme, generating a flow guide heat dissipation structure based on the Tesla valve, wherein the battery cell is arranged in the flow guide heat dissipation structure. In the embodiments of the present application, the flow guide heat dissipation structure based on the Tesla valve is correspondingly designed and generated on the basis of the size information of the battery cell of a traction battery, and the battery cell is arranged in the flow guide heat dissipation structure, so that heat of the traction battery can be effectively released at a high speed, thereby avoiding thermal runaway of the battery, and preventing safety accidents.

Description

Methods, apparatus, systems, equipment and media for generating heat dissipation structures for power batteries

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese patent application CN202410676388.0, filed on May 29, 2024, entitled “Method, Apparatus, System, Equipment and Medium for Generating Heat Dissipation Structure of Power Battery”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application belongs to the field of new energy vehicle technology, and specifically relates to a method, device, system, equipment and medium for generating a power battery heat dissipation structure. Background Technology

[0004] With the rapid popularization of electric vehicles, consumers and automakers are paying increasing attention to battery safety. Power batteries are not only the main power source and core component of electric vehicles, but also a major technological barrier to their rapid development. Lithium-ion batteries, with their advantages of high energy density, long cycle life, and environmental friendliness, are widely used in mobile phones, electric vehicles, and power banks. However, lithium-ion batteries inherently possess thermal risks due to their material and structural characteristics. During long-term charge-discharge cycles, factors such as lithium dendrite formation and mechanical abuse can trigger thermal runaway, producing large amounts of toxic or highly flammable gases, leading to subsequent violent fires or explosions. Furthermore, batteries generate heat during charging and discharging, and this heat is affected by factors such as charge / discharge rate and operating temperature, causing the battery temperature to rise. When a battery or battery pack is impacted or crushed in a traffic accident, internal damage can occur, leading to thermal runaway. The activation of internal side reactions can also trigger thermal runaway, all of which are fundamental causes of fires in new energy vehicles. If the heat cannot dissipate in time, the battery will experience thermal runaway, potentially leading to serious safety accidents such as combustion and explosion.

[0005] Summary of the Invention

[0006] The purpose of this application is to provide a method, apparatus, system, equipment and medium for generating a heat dissipation structure for a power battery, so as to solve the problem that existing power batteries may experience thermal runaway, or even cause serious safety accidents such as combustion and explosion, when heat cannot be dissipated in time.

[0007] In a first aspect, embodiments of this application provide a method for generating a power battery heat dissipation structure, comprising: obtaining the size information of the battery cell; determining the design parameters of the Tesla valve based on the size information, and generating a Tesla valve design scheme set; obtaining the optimal Tesla valve design scheme based on a set filtering rule; and generating a flow-guiding heat dissipation structure based on the Tesla valve according to the optimal Tesla valve design scheme, for placing the battery cell on the flow-guiding heat dissipation structure.

[0008] In the above implementation process, the size information of the battery cell is obtained; the design parameters of the Tesla valve are determined based on the size information, and a set of Tesla valve design schemes is generated; the optimal Tesla valve design scheme is obtained based on the set screening rules; a flow-guiding and heat-dissipating structure based on the Tesla valve is generated based on the optimal Tesla valve design scheme, and the battery cell is placed on the flow-guiding and heat-dissipating structure; by designing and generating the flow-guiding and heat-dissipating structure based on the size information of the power battery cell, and placing the battery cell on the flow-guiding and heat-dissipating structure, the heat of the power battery can be released quickly and effectively, avoiding thermal runaway of the battery and preventing safety accidents.

[0009] Furthermore, obtaining the optimal Tesla valve design scheme based on the set screening rules includes: analyzing the Tesla valve design scheme set to obtain multiple Tesla valve streamline diagrams; analyzing the Tesla valve streamline diagrams to obtain the optimal Tesla valve design scheme; and verifying the optimal Tesla valve design scheme.

[0010] In the above implementation process, the optimal Tesla valve design scheme is obtained through analysis and processing, so as to generate a Tesla valve heat dissipation structure based on the optimal Tesla valve design scheme, to release heat from the battery cell and prevent thermal runaway of the battery.

[0011] Furthermore, determining the design parameters of the Tesla valve based on the dimensional information includes: determining the cross-sectional positioning and guide groove width of the Tesla valve based on the dimensional information.

[0012] In the above implementation process, the cross-sectional positioning of the Tesla valve and the width parameters of the flow channel are determined based on the size information of the battery, so as to design and manufacture a structure for guiding and dissipating heat from the battery cell.

[0013] Furthermore, the step of analyzing the Tesla valve design scheme set to obtain Tesla valve streamline diagrams includes: performing simulation analysis on the Tesla valve design scheme set using simulation software to obtain multiple Tesla valve streamline diagrams.

[0014] In the above implementation process, the Tesla valve design scheme set is analyzed by simulation software to obtain the Tesla valve streamline diagram. Then, the Tesla valve streamline diagram is analyzed to obtain the optimal Tesla valve design scheme, so as to design and manufacture a structure for guiding and dissipating heat from the battery cell.

[0015] Furthermore, the step of analyzing the Tesla valve streamline diagram to obtain the optimal Tesla valve design scheme includes: analyzing the Tesla valve streamline diagram to obtain the ideal Tesla valve design scheme; obtaining the test parameters corresponding to the ideal Tesla valve design scheme; performing normalization analysis and normal distribution test analysis on the test parameters; performing fitting analysis on the test parameters to generate fitting results; and analyzing the fitting results to obtain the optimal Tesla valve design scheme.

[0016] In the above implementation process, the optimal Tesla valve design scheme is obtained so as to generate a Tesla valve heat dissipation structure based on the optimal Tesla valve design scheme, which releases heat from the battery cell and prevents thermal runaway of the battery.

[0017] Furthermore, the step of performing fitting analysis on the test parameters to generate fitting results includes: performing multi-order fitting analysis on the test parameters to generate fitting results for different functions; wherein, the test parameters include the average temperature and the Reynolds number.

[0018] In the above implementation process, the ideal design scheme of the Tesla valve is subjected to fitting analysis to generate fitting effect, and the fitting effect is analyzed in order to obtain the optimal Tesla valve design scheme.

[0019] Furthermore, the verification of the optimal Tesla valve design includes: generating a manufacturable Tesla valve model drawing based on the optimal Tesla valve design; obtaining a physical Tesla valve based on the Tesla valve model drawing; wherein the physical Tesla valve includes a Tesla valve prototyping by mold making and a 3D printed Tesla valve; detecting the verification parameters of the physical Tesla valve; wherein the verification parameters include the structural parameters and experimental parameters of the physical Tesla valve; comparing the verification parameters with preset verification data to determine whether the Tesla valve design is the optimal Tesla valve design.

[0020] During the above implementation process, the optimal Tesla valve design scheme was verified to ensure that the scheme is the best and feasible.

[0021] Furthermore, the verification parameters for detecting the physical Tesla valve include: obtaining the structural parameters of the physical Tesla valve; obtaining a first experimental parameter when the battery cell is installed upside down on the physical Tesla valve; and obtaining a second experimental parameter when the battery cell is installed upright on the physical Tesla valve.

[0022] In the above implementation process, the Tesla valve design scheme is verified to be the optimal Tesla valve design scheme by detecting the parameters of the physical Tesla valve.

[0023] Furthermore, the step of comparing the verification parameters with the preset verification data to determine whether the Tesla valve design is the optimal Tesla valve design includes: if the verification parameters and the preset verification data correspond, then the Tesla valve design is determined to be the optimal Tesla valve design; if the verification parameters and the preset verification data do not correspond, then the Tesla valve design is determined not to be the optimal Tesla valve design, and then the optimal Tesla valve design is obtained again.

[0024] In the above implementation process, the optimal Tesla valve design scheme was determined, thereby ensuring that the generated physical Tesla valve heat dissipation structure can dissipate heat from the battery cell at high speed and effectively.

[0025] Secondly, embodiments of the present invention provide a power battery heat dissipation structure generation device, comprising: an information acquisition module for acquiring the size information of the battery cell; a scheme generation module for determining the design parameters of the Tesla valve based on the size information and generating a Tesla valve design scheme set; a scheme screening module for obtaining the optimal Tesla valve design scheme based on set screening rules; and a structure design module for generating a flow-guiding heat dissipation structure based on the optimal Tesla valve design scheme, for placing the battery cell on the flow-guiding heat dissipation structure.

[0026] Thirdly, embodiments of the present invention provide a power battery system, including: a power battery heat dissipation structure generating device and a battery pack as described above, wherein a flow-guiding heat dissipation structure formed by a Tesla valve assembly is installed in the battery pack, and battery cells are installed in the flow-guiding heat dissipation structure.

[0027] Furthermore, the Tesla valve assembly forms a single-flow heat dissipation structure or a surface-flow heat dissipation structure.

[0028] Furthermore, the battery cell is placed upside down or upright within the heat dissipation structure.

[0029] Fourthly, embodiments of the present invention provide an electronic device, comprising:

[0030] The system includes a processor, a memory, and a bus. The processor is connected to the memory via the bus. The memory stores computer-readable instructions. When the computer-readable instructions are executed by the processor, they are used to implement the power battery heat dissipation structure generation method described above.

[0031] Fifthly, embodiments of the present invention provide a computer-readable storage medium storing a computer program, which, when executed by a server, implements the power battery heat dissipation structure generation method as described above.

[0032] In a sixth aspect, embodiments of the present invention provide a computer program product, the computer program product including instructions, which, when executed by a computer, cause the computer to perform the method described above. Attached Figure Description

[0033] 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 of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 is a flowchart illustrating a method for generating a power battery heat dissipation structure according to an embodiment of this application;

[0035] Figure 2 is a flowchart illustrating another method for generating a power battery heat dissipation structure according to an embodiment of this application;

[0036] Figure 3 is a flowchart illustrating another method for generating a power battery heat dissipation structure according to an embodiment of this application;

[0037] Figure 4 is a flowchart illustrating another method for generating a power battery heat dissipation structure according to an embodiment of this application;

[0038] Figure 5 is a schematic diagram of the Tesla valve forward conduction principle of a power battery heat dissipation structure generation method provided in an embodiment of this application.

[0039] Figure 6 is a schematic diagram of the reverse conduction principle of a Tesla valve in a method for generating a power battery heat dissipation structure according to an embodiment of this application.

[0040] Figure 7 is a design plan view of a Tesla valve design scheme set for a power battery heat dissipation structure generation method provided in an embodiment of this application;

[0041] Figure 8 is a streamline diagram of a Tesla valve design scheme set for a power battery heat dissipation structure generation method provided in an embodiment of this application;

[0042] Figure 9 shows different function trend lines of the fitting effect of the Tesla valve ideal design scheme of a power battery heat dissipation structure generation method provided in the embodiment of this application;

[0043] Figure 10 is a schematic diagram of a power battery heat dissipation structure generation device provided in an embodiment of this application;

[0044] Figure 11 is a Tesla valve single-flow heat dissipation structure diagram of a power battery heat dissipation structure generation system provided in an embodiment of this application;

[0045] Figure 12 is a diagram of the Tesla valve face heat dissipation structure of a power battery heat dissipation structure generation system provided in an embodiment of this application.

[0046] Figure 13 is a diagram of the Tesla valve face heat dissipation structure of the battery cell in a power battery heat dissipation structure generation system provided in an embodiment of this application.

[0047] Figure 14 is a diagram of the cell inverted Tesla valve heat dissipation structure of a power battery heat dissipation structure generation system provided in an embodiment of this application.

[0048] Figure 15 is a diagram of a power battery heat dissipation structure generation system provided in an embodiment of this application, showing the battery cell positioned in a Tesla valve flow-through heat dissipation structure.

[0049] Figure 16 is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Detailed Implementation

[0050] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0051] 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.

[0052] Please refer to Figure 1, which is a flowchart illustrating a method for generating a power battery heat dissipation structure according to an embodiment of this application. The method for generating the power battery heat dissipation structure includes:

[0053] 100. Obtain the size information of the battery cell.

[0054] Specifically, the Tesla valve heat dissipation structure designed in this application is designed to prevent heat from the battery cell. To conduct heat dissipation for the battery cell, it is necessary to first obtain the size information of the battery cell in order to carry out the subsequent Tesla valve design. Optionally, the size information of the battery cell can be obtained by measuring the battery cell.

[0055] 200. Determine the design parameters of the Tesla valve based on the dimensional information, and generate a Tesla valve design scheme set.

[0056] Optionally, after obtaining the size information of the battery cell, the structure of the Tesla valve is designed based on the size information of the cell, including the size and shape of each component of the Tesla valve, the shape and size of the receiving hole for accommodating the battery cell, the model of the Tesla valve, the cross-sectional positioning, the width of the guide groove, and other design parameters. Based on the above design parameters, multiple Tesla valve design schemes are generated, and multiple design schemes are combined to form a Tesla design scheme set. Different schemes that meet the size standards of the battery cell are designed, and the optimal scheme can be selected from them to ensure the heat dissipation effect of the cell, avoid thermal runaway, and ensure the service life of the battery.

[0057] 300. Based on the set filtering rules, the optimal Tesla valve design scheme is obtained.

[0058] Specifically, after generating a Tesla valve solution set based on the battery cell information, in order to ensure better practical performance of the Tesla valve, the optimal Tesla valve design solution is further selected from the Tesla valve solution set that conforms to the size standard of the battery cell. The optimal Tesla valve design solution is obtained according to the set selection rules.

[0059] 400. Based on the optimal Tesla valve design, generate a flow-guiding and heat-dissipating structure based on the Tesla valve, which is used to place the battery cell on the flow-guiding and heat-dissipating structure.

[0060] Specifically, after selecting the optimal Tesla valve design scheme, a physical Tesla valve heat dissipation structure can be generated based on the design scheme. The battery cell can then be placed in the heat dissipation structure to achieve heat dissipation. The physical Tesla valve heat dissipation structure can be generated by generating a single Tesla valve as the heat dissipation structure and placing the battery cell in the battery cell receiving hole of the Tesla valve. Alternatively, it can be generated by generating a heat dissipation structure formed by combining two or more Tesla valves based on the structure of the Tesla valve and placing multiple battery cells in the heat dissipation structure. Optionally, multiple battery cells can be placed in the battery cell receiving hole of the Tesla valve in the heat dissipation structure.

[0061] For example, based on the cell size information, an optimal Tesla valve design is obtained, generating a Tesla valve heat dissipation structure. The cell is placed on this structure, and the Tesla valve design uniformly distributes the heat field inside the battery. Furthermore, in the event of thermal runaway or explosion inside the battery, the Tesla valve design efficiently releases energy. Understandably, in a typical flow field, when the local pressure is lower than the partial pressure of the gas, gas will precipitate, resulting in cavitation. The Tesla valve is a unidirectional flow valve. Referring to Figures 5 and 6, the forward and reverse flow conditions of the Tesla valve are shown respectively. When the Tesla valve is reverse-flowing, a local low pressure is generated at the valve body's cross outlet. When the pressure difference between the valve body's inlet and outlet is large, cavitation occurs at the cross outlet. The relevant Zwart-Gerbera-Belamri (ZGB) cavitation model can be expressed as a transport equation, as shown below:

[0062] Where v represents the gas phase, α is the gas volume fraction, and ρ v V is the gas density. v R is the gas phase velocity. e R c These are the mass transfer source terms for gas generation and emission, respectively.

[0063] Thus, the Tesla valve can balance the temperature field distribution inside the power battery cell, and at the same time, it can release energy quickly and effectively through the flow-guiding design in the event of thermal runaway or explosion inside the power battery cell, thus preventing safety accidents.

[0064] As described above, this application embodiment obtains the size information of the battery cell; determines the design parameters of the Tesla valve based on the size information, and generates a Tesla valve design scheme set; obtains the optimal Tesla valve design scheme based on the set filtering rules; generates a flow-guiding and heat-dissipating structure based on the Tesla valve based on the optimal Tesla valve design scheme, and uses the battery cell to be placed on the flow-guiding and heat-dissipating structure; by designing and generating the flow-guiding and heat-dissipating structure based on the Tesla valve according to the size information of the power battery cell, and placing the battery cell on the flow-guiding and heat-dissipating structure, the heat of the power battery can be released quickly and effectively, avoiding thermal runaway of the battery and preventing safety accidents.

[0065] Based on the above embodiments, the method for generating a power battery heat dissipation structure can be further specified as follows: determining the design parameters of the Tesla valve based on the size information includes:

[0066] The cross-sectional positioning and guide groove width of the Tesla valve are determined based on the dimensional information.

[0067] Optionally, after obtaining the size information of the battery cell, the cross-sectional positioning and guide groove width of the Tesla valve are determined based on the cell size information. This ensures that the designed Tesla valve heat dissipation structure is compatible with the cell, enhancing the heat dissipation effect on the cell. Furthermore, based on the determined cross-sectional positioning and guide groove width of the Tesla valve, multiple compatible Tesla valves can be designed, generating multiple Tesla valve design schemes. These multiple design schemes are then combined to form a Tesla design scheme set, designing different schemes that meet the size standards of the battery cell. The optimal scheme can then be selected to enhance the heat dissipation effect on the cell and ensure the battery's lifespan.

[0068] Based on the above embodiments, Figure 2 shows a flowchart of another method for generating a power battery heat dissipation structure according to an embodiment of this application. This method for generating a power battery heat dissipation structure is a specific embodiment of the above-described method. Referring to Figure 2, the method for generating a power battery heat dissipation structure includes:

[0069] 310. The Tesla valve design scheme set was analyzed to obtain multiple Tesla valve streamline diagrams.

[0070] Specifically, based on the cell size information, multiple compatible Tesla valves can be designed, generating multiple Tesla valve design schemes. These multiple design schemes are then combined to form a Tesla design scheme set. Further, the multiple Tesla valve design schemes are analyzed and processed to generate flow diagrams corresponding to each Tesla valve design scheme. Optionally, the Tesla valves of different design schemes can be formed into planar design drawings, which are then fitted into a flow diagram template to generate a flow diagram for each Tesla valve. Alternatively, the Tesla valves of different design schemes can be formed into planar design drawings and then image processed to generate a flow diagram corresponding to each Tesla valve. Alternatively, each design scheme in the design scheme set can be labeled, and the design scheme set can be processed uniformly to generate a flow diagram corresponding to the scheme set.

[0071] For example, please refer to Figure 7, which shows a plan view of the Tesla valve design scheme set. The design scheme set of this application embodiment includes 6 design schemes. All of them are based on the size information of the same battery cell to determine the cross-sectional positioning and flow channel width of the Tesla valve and generate scheme af. All 6 schemes can accommodate the battery cell and conduct heat dissipation for the battery cell.

[0072] 320. Analyze the streamline diagram of the Tesla valve to obtain the optimal Tesla valve design scheme.

[0073] Optionally, the obtained Tesla valve streamline diagrams can be analyzed to select the best Tesla valve design. The selection parameters can be set according to specific requirements to select the Tesla valve that best suits the battery cell and battery.

[0074] 330. Verify the optimal Tesla valve design.

[0075] Specifically, in this embodiment of the application, a Tesla valve design scheme set is generated, and a corresponding streamline diagram of the design scheme set is generated. The optimal Tesla valve design scheme is obtained by filtering according to the streamline diagram. Furthermore, the optimal Tesla valve design scheme needs to be verified to ensure that the design scheme is optimal, thereby ensuring the high-speed and effective heat dissipation of the battery cell. It is understood that the verification method and process can be designed according to specific requirements.

[0076] The above-described embodiments of this application obtain the optimal Tesla valve design scheme through analysis and processing, so as to generate a Tesla valve heat dissipation structure based on the optimal Tesla valve design scheme, release heat from the battery cell, and prevent thermal runaway of the battery.

[0077] Based on the above embodiments, the method for generating a power battery heat dissipation structure can be further specified as follows: Analyzing the Tesla valve design scheme set to obtain a Tesla valve streamline diagram includes:

[0078] The Tesla valve design scheme set was simulated and analyzed using simulation software, resulting in multiple Tesla valve streamline diagrams.

[0079] Optionally, in this embodiment of the application, the design plan of the Tesla valve design scheme set is simulated and analyzed using simulation software. Further, Ansys Fluent finite element simulation analysis is performed to generate the corresponding Tesla valve streamline diagram. The Tesla valve streamline diagram is then analyzed to obtain the optimal Tesla valve design scheme, so as to design and manufacture a structure for guiding and dissipating heat from the battery cell.

[0080] For example, please refer to Figure 8, which shows the six Tesla valve streamline diagrams generated corresponding to the six design scheme plan diagrams in Figure 7. In this embodiment of the application, the design plan diagrams of the Tesla valve design scheme set are subjected to unified Ansys Fluent simulation analysis to obtain the streamline diagrams of the Tesla valve design scheme set, so as to analyze the streamline diagrams in the future and select the best Tesla valve design scheme.

[0081] Based on the above embodiments, Figure 3 shows a flowchart of another method for generating a power battery heat dissipation structure according to an embodiment of this application. This method for generating a power battery heat dissipation structure is a specific embodiment of the above-described method. Referring to Figure 3, the method for generating a power battery heat dissipation structure includes:

[0082] 321. Analyze the streamline diagram of the Tesla valve to obtain the ideal design scheme of the Tesla valve.

[0083] Specifically, the obtained Tesla valve streamline diagrams are analyzed to select the best Tesla valve design scheme. Based on specific requirements, the Tesla valve that best suits the battery cell and battery can be selected.

[0084] For example, referring to Figure 8, this embodiment of the application analyzes the streamline diagram of design scheme af and comprehensively screens the streamline diagrams of six design schemes based on parameters such as the pipe shape, morphological compatibility, and space utilization of the Tesla valve. Design scheme a has the most heat lines for airflow, thus the airflow carries away the most heat, resulting in the best cooling effect. At the same time, design scheme a has the highest morphological compatibility and the highest space utilization, making it the most suitable for the structure of the power battery and providing the best heat dissipation effect for the battery cells. Therefore, after analyzing and screening design scheme af, this embodiment of the application finds that the streamline diagram of design scheme a is the most ideal. Thus, design scheme a is the ideal design scheme for the Tesla valve.

[0085] 322. Obtain the test parameters corresponding to the ideal design scheme of the Tesla valve.

[0086] Specifically, the test parameters corresponding to the ideal design scheme of the Tesla valve are obtained, wherein the test parameters include the average temperature T. ave and Reynolds number R e .

[0087] 323. Perform normalization analysis and normality test analysis on the test parameters.

[0088] Specifically, the test parameters of the obtained ideal design scheme of the Tesla valve are subjected to data normalization analysis and normal distribution test analysis. Normalization analysis of the test parameters can eliminate the differences between characteristic values ​​of different scales or orders of magnitude. Optionally, the normalization analysis can use the min-max normalization method or the logarithmic function normalization method, etc. After the test parameters are normalized, a normal distribution test analysis is further performed. Optionally, the normal distribution test analysis can use graphical methods, statistical tests, or descriptive methods, etc.

[0089] 324. Perform a fitting analysis on the test parameters to generate a fitting result.

[0090] Specifically, after performing normalization analysis and normality test analysis on the test parameters, a fitting analysis is performed on the processed test parameters. Optionally, this can be based on the average temperature T. ave and Reynolds number R e The test parameters of the ideal design scheme of the Tesla valve were fitted and analyzed to obtain the fitting effect of different functions.

[0091] 325. Analyze the fitting effect to obtain the optimal Tesla valve design scheme.

[0092] Specifically, the fitting effects of different functions are analyzed, and the best-fitting function is selected. If the test parameters of the ideal Tesla valve design meet the set fitting effect standard, that is, the ideal Tesla valve design meets the preliminary verification, then the ideal Tesla valve design is determined to be the best Tesla valve design.

[0093] For example, please refer to Figure 9, which shows the trend lines of different functions for fitting the ideal design scheme a of the Tesla valve. After confirming that design scheme a is the ideal design scheme for the Tesla valve, the test parameters of Tesla valve design scheme a are simplified to the average temperature T after normalization analysis and normal distribution test analysis. ave and Reynolds number R e The fitting analysis yielded the fitting effects of nine different functions, as shown in Figure 9. In the figures, line a represents a first-order function, line b represents an exponential function, line c represents a logarithmic function, line d represents a power function, line e represents a second-order function, line f represents a third-order function, and line g represents a fourth-order function. It can be seen that the second-order function (line e) has the best fitting effect, with a goodness of fit of R0. 2 =0.9953, the fitting formula is y = 6E －8 x 2 -0.0012x+302.6.

[0094] In the above implementation process, the optimal Tesla valve design scheme is obtained so as to generate a Tesla valve heat dissipation structure based on the optimal Tesla valve design scheme, which releases heat from the battery cell and prevents thermal runaway of the battery.

[0095] Based on the above embodiments, Figure 4 shows a flowchart of another method for generating a power battery heat dissipation structure according to an embodiment of this application. This method for generating a power battery heat dissipation structure is a specific embodiment of the above-described method. Referring to Figure 4, the method for generating a power battery heat dissipation structure includes:

[0096] 331. Based on the optimal Tesla valve design, generate a manufacturable Tesla valve model diagram.

[0097] Specifically, based on the size information of the battery cells and the set screening rules, the optimal Tesla valve design scheme is obtained. Based on the optimal Tesla valve design scheme, a manufacturable Tesla valve model drawing is generated so that a physical Tesla valve can be made according to the model drawing, thereby verifying whether the manufactured Tesla valve meets the standards.

[0098] 332. Based on the Tesla valve model diagram, a physical Tesla valve is obtained; wherein the physical Tesla valve includes a Tesla valve prototyping by mold making and a Tesla valve 3D printed.

[0099] Optionally, based on the Tesla valve model diagram, a Tesla valve can be manufactured by mold making or 3D printing for further experimental verification. The manufactured Tesla valve can be a single Tesla valve forming a heat dissipation structure, or a combination of multiple Tesla valves forming a heat dissipation mechanism. For example, the Tesla valve model diagram can be stretched and extended into a single heat dissipation structure diagram, and a single heat dissipation structure formed by combining multiple Tesla valves can be manufactured for experimental verification. For example, the Tesla valve model diagram can be stretched and extended into a surface single heat dissipation structure diagram, and then further repeated and arranged to form a surface heat dissipation structure, and a surface heat dissipation structure formed by combining multiple Tesla valves can be manufactured for experimental verification.

[0100] 333. Detect the verification parameters of the physical Tesla valve; wherein the verification parameters include the structural parameters and experimental parameters of the physical Tesla valve.

[0101] Specifically, the structural and experimental parameters of Tesla valves manufactured by mold making or 3D printing are tested. Optionally, the structural parameters of Tesla valves manufactured by mold making or 3D printing can be obtained by measuring the dimensional information with tools or by directly scanning the dimensional information with a scanning device. The structural parameters are obtained based on the dimensional information. The experimental parameters can be obtained by conducting experiments on Tesla valves manufactured by mold making or 3D printing.

[0102] For example, the verification parameters for detecting the physical Tesla valve include: obtaining the structural parameters of the physical Tesla valve; obtaining a first experimental parameter when the battery cell is installed upside down on the physical Tesla valve; and obtaining a second experimental parameter when the battery cell is installed upright on the physical Tesla valve. The first and second experimental parameters include data such as temperature and airflow velocity.

[0103] 334. Compare the verification parameters with the preset verification data to determine whether the Tesla valve design is the optimal Tesla valve design.

[0104] Specifically, the optimal Tesla valve design is verified by comparing the verification parameters with the preset verification data to ensure that the design is the optimal and feasible solution. The preset verification data is set according to specific requirements, such as the battery structure, cell structure, battery specifications, or other requirements. This application embodiment does not limit the specific content and value of the preset verification data.

[0105] For example, if the verification parameters correspond to the preset verification data, the Tesla valve design is determined to be the optimal Tesla valve design; if the verification parameters do not correspond to the preset verification data, the Tesla valve design is determined to be not the optimal Tesla valve design, and the optimal Tesla valve design is obtained again; thus, the optimal Tesla valve design is determined, thereby ensuring that the generated physical Tesla valve heat dissipation structure can dissipate heat from the battery cell at high speed and effectively.

[0106] The steps described above are not strictly performed in the order of their numbers; they should be understood as a whole.

[0107] Secondly, based on the above embodiments, Figure 10 is a schematic diagram of a power battery heat dissipation structure generation device provided in this application embodiment. Referring to Figure 10, the power battery heat dissipation structure generation device provided in this embodiment specifically includes: an information acquisition module 201, a scheme generation module 202, a scheme screening module 203, and a structure design module 204.

[0108] The information acquisition module 201 is used to acquire the size information of the battery cell; the scheme generation module 202 is used to determine the design parameters of the Tesla valve based on the size information and generate a Tesla valve design scheme set; the scheme screening module 203 is used to obtain the optimal Tesla valve design scheme based on the set screening rules; and the structure design module 5204 is used to generate a flow-guiding and heat dissipation structure based on the optimal Tesla valve design scheme, and to place the battery cell on the flow-guiding and heat dissipation structure.

[0109] As described above, this application embodiment obtains the size information of the battery cell; determines the design parameters of the Tesla valve based on the size information, and generates a Tesla valve design scheme set; obtains the optimal Tesla valve design scheme based on the set filtering rules; generates a flow-guiding and heat-dissipating structure based on the Tesla valve based on the optimal Tesla valve design scheme, and uses the battery cell to be placed on the flow-guiding and heat-dissipating structure; by designing and generating the flow-guiding and heat-dissipating structure based on the Tesla valve according to the size information of the power battery cell, and placing the battery cell on the flow-guiding and heat-dissipating structure, the heat of the power battery can be released quickly and effectively, avoiding thermal runaway of the battery and preventing safety accidents.

[0110] This application's embodiments rely on a relatively simple structural design system, which can accurately and efficiently balance the internal temperature field of the battery, prevent heat accumulation inside the power battery, and thus prevent thermal diffusion and thermal runaway, improving safety performance. Relying on the relatively simple structural design system, in the event of thermal runaway or explosion inside the power battery, the energy is released quickly and effectively through a flow-guiding design, preventing safety accidents. It also reduces the costs and time associated with personnel and sample losses, as well as related testing materials, resulting from large-sample experimental testing.

[0111] The power battery heat dissipation structure generation device provided in this application embodiment can be used to execute the power battery heat dissipation structure generation method provided in the above embodiment, and has corresponding functions and beneficial effects.

[0112] Thirdly, based on the above embodiments, this application also provides a power battery heat dissipation structure generation system. The power battery heat dissipation structure generation system provided in this embodiment specifically includes: the power battery heat dissipation structure generation device and the battery pack as described above. The battery pack is equipped with a flow-guiding heat dissipation structure formed by a Tesla valve assembly, and the flow-guiding heat dissipation structure is equipped with battery cells.

[0113] In some embodiments, please refer to Figure 11, the Tesla valve assembly forms a single-flow heat dissipation structure; please refer to Figure 12, the Tesla valve assembly forms a surface-flow heat dissipation structure; please refer to Figure 13, which is a top view of a cylindrical battery cell installed in a surface-flow heat dissipation structure. The design involves installing the cylindrical battery cell into the surface-flow heat dissipation structure to achieve heat dissipation through flow guidance.

[0114] In some embodiments, please refer to FIG14, which shows the battery cell placed upside down in the heat dissipation structure of the Tesla valve, and please refer to FIG15, which shows the battery cell placed upright in the heat dissipation structure of the Tesla valve. Different battery cell placement structures can be selected according to requirements to achieve better heat dissipation effect.

[0115] As described above, this application embodiment obtains the size information of the battery cell; determines the design parameters of the Tesla valve based on the size information, and generates a Tesla valve design scheme set; obtains the optimal Tesla valve design scheme based on the set filtering rules; generates a flow-guiding and heat-dissipating structure based on the Tesla valve based on the optimal Tesla valve design scheme, and uses the battery cell to be placed in the flow-guiding and heat-dissipating structure; designs and generates a flow-guiding and heat-dissipating structure based on the Tesla valve according to the size information of the power battery cell, and places the battery cell in the flow-guiding and heat-dissipating structure. The flow-guiding and heat-dissipating structure formed by the Tesla valve combination is installed in the battery pack, which can release the heat of the power battery quickly and effectively, avoid thermal runaway of the battery, and prevent safety accidents.

[0116] Fourthly, this application also provides an electronic device that can integrate the power battery heat dissipation structure generation device provided in this application. Figure 16 is a schematic diagram of the structure of an electronic device provided in this application. Referring to Figure 16, the electronic device includes: an input device 73, an output device 74, a memory 72, and one or more processors 71; the memory 72 is used to store one or more programs; when the one or more programs are executed by the one or more processors 71, the one or more processors 71 implement the power battery heat dissipation structure generation method provided in the above embodiments. The input device 73, the output device 74, the memory 72, and the processors 71 can be connected by a bus or other means, as shown in Figure 16, which is an example of connection via a bus.

[0117] The processor 71 executes various functional applications and data processing of the device by running software programs, instructions and modules stored in the memory 72, thereby realizing the above-mentioned method for generating the power battery heat dissipation structure.

[0118] The electronic device provided above can be used to execute the power battery heat dissipation structure generation method provided in the above embodiments, and has corresponding functions and beneficial effects.

[0119] Fifthly, embodiments of this application also provide a computer-readable storage medium, which includes a stored computer program; wherein, when the computer program is running, it controls the device where the computer-readable storage medium is located to execute the power battery heat dissipation structure generation method as described above, and can achieve the same beneficial effects.

[0120] Of course, the computer-executable instructions provided in the embodiments of this application are not limited to the power battery heat dissipation structure generation method described above, but can also execute related operations in the power battery heat dissipation structure generation method provided in any embodiment of this application.

[0121] Sixthly, embodiments of this application also provide a computer program product. The methods described in the various embodiments of this application can be implemented entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the various embodiments of this application are executed entirely or partially. The computer can be a general-purpose computer, a special-purpose computer, a computer network, network equipment, user equipment, core network equipment, OAM (Open Application Model), or other programmable devices.

[0122] The computer program or instructions may be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, the computer program or instructions may be transferred from one website, computer, server, or data center to another website, computer, server, or data center via wired or wireless means. The computer-readable storage medium may be any available medium that a computer can access, or a data storage device such as a server or data center that integrates one or more available media. The available medium may be a magnetic medium, such as a floppy disk, hard disk, or magnetic tape; or an optical medium, such as a digital video optical disc; or a semiconductor medium, such as a solid-state drive. The computer-readable storage medium may be a volatile or non-volatile storage medium, or may include both volatile and non-volatile types of storage media.

[0123] 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 a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

[0124] 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.

[0125] 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 an electronic 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, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0126] 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.

[0127] 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 the claims.

[0128] 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 generating a heat dissipation structure for a power battery, characterized in that, include: Obtain the size information of the battery cell; Based on the dimensional information, determine the design parameters of the Tesla valve and generate a Tesla valve design scheme set; Based on the set screening rules, the optimal Tesla valve design scheme is obtained; Based on the optimal Tesla valve design, a Tesla valve-based heat dissipation structure is generated for mounting the battery cell on the heat dissipation structure.

2. The method for generating a power battery heat dissipation structure according to claim 1, characterized in that, The optimal Tesla valve design scheme, obtained based on the set screening rules, includes: The Tesla valve design scheme set was analyzed to obtain multiple Tesla valve streamline diagrams; Analyzing the Tesla valve streamline diagram, the optimal Tesla valve design scheme is obtained; The optimal Tesla valve design was verified.

3. The method for generating a power battery heat dissipation structure according to claim 1, characterized in that, Determining the design parameters of the Tesla valve based on the dimensional information includes: The cross-sectional positioning and guide groove width of the Tesla valve are determined based on the dimensional information.

4. The method for generating a power battery heat dissipation structure according to claim 2, characterized in that, The analysis of the Tesla valve design scheme set to obtain the Tesla valve streamline diagram includes: The Tesla valve design scheme set was simulated and analyzed using simulation software, resulting in multiple Tesla valve streamline diagrams.

5. The method for generating a power battery heat dissipation structure according to claim 2, characterized in that, The analysis of the Tesla valve streamline diagram yields the optimal Tesla valve design scheme, including: Analyzing the streamline diagram of the Tesla valve, the ideal design scheme of the Tesla valve is obtained; Obtain the test parameters corresponding to the ideal design scheme of the Tesla valve; Normalization analysis and normality test analysis were performed on the test parameters; The test parameters are subjected to fitting analysis to generate fitting results; The optimal Tesla valve design was obtained by analyzing the fitting results.

6. The method for generating a power battery heat dissipation structure according to claim 5, characterized in that, The step of performing fitting analysis on the test parameters to generate fitting results includes: Multi-order fitting analysis is performed on the test parameters to generate fitting effects for different functions; wherein, the test parameters include the average temperature and the Reynolds number.

7. The method for generating a power battery heat dissipation structure according to claim 2, characterized in that, The verification of the optimal Tesla valve design includes: Based on the optimal Tesla valve design, a manufacturable Tesla valve model diagram is generated. Based on the Tesla valve model diagram, a physical Tesla valve is obtained; wherein, the physical Tesla valve includes a Tesla valve produced by mold trial production and a Tesla valve produced by 3D printing; The verification parameters of the physical Tesla valve are tested; wherein, the verification parameters include the structural parameters and experimental parameters of the physical Tesla valve. By comparing the verification parameters with the preset verification data, it is determined whether the Tesla valve design is the optimal Tesla valve design.

8. The method for generating a power battery heat dissipation structure according to claim 7, characterized in that, The verification parameters for detecting the physical Tesla valve include: Obtain the structural parameters of the physical Tesla valve; When the battery cell is installed upside down on the physical Tesla valve, the first experimental parameters are obtained; When the battery cell is installed upright on the physical Tesla valve, the second experimental parameters are obtained.

9. The method for generating a power battery heat dissipation structure according to claim 7, characterized in that, The step of comparing the verification parameters with preset verification data to determine whether the Tesla valve design is the optimal Tesla valve design includes: If the verification parameters correspond to the preset verification data, then the Tesla valve design is determined to be the optimal Tesla valve design. If the verification parameters and the preset verification data do not correspond, it is determined that the Tesla valve design is not the optimal Tesla valve design, and the optimal Tesla valve design is obtained again.

10. A device for generating a heat dissipation structure for a power battery, characterized in that, include: The information acquisition module is used to acquire the size information of the battery cell; The scheme generation module is used to determine the design parameters of the Tesla valve based on the size information and generate a Tesla valve design scheme set. The scheme selection module is used to obtain the best Tesla valve design scheme based on the set selection rules; The structural design module is used to generate a flow-guiding and heat-dissipating structure based on the optimal Tesla valve design scheme, and to place the battery cell on the flow-guiding and heat-dissipating structure.

11. A power battery system, characterized in that, include: The power battery heat dissipation structure generating device and battery pack as described in claim 10, wherein the battery pack is equipped with a flow-guiding heat dissipation structure formed by a Tesla valve assembly, and the flow-guiding heat dissipation structure is equipped with battery cells.

12. The power battery system according to claim 11, characterized in that, The Tesla valve assembly forms a single-flow heat dissipation structure or a surface-flow heat dissipation structure.

13. The power battery system according to claim 11, characterized in that, The battery cell is placed either upside down or upright within the heat dissipation structure.

14. An electronic device, characterized in that, include: The system includes a processor, a memory, and a bus. The processor is connected to the memory via the bus. The memory stores computer-readable instructions. When the computer-readable instructions are executed by the processor, they are used to implement the method for generating a power battery heat dissipation structure as described in any one of claims 1-9.

15. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a server, implements the method for generating a power battery heat dissipation structure as described in any one of claims 1-9.

16. A computer program product, characterized in that, The computer program product includes instructions that, when executed by a computer, cause the computer to perform the method according to any one of claims 1-9.

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