Heat exchange structure design method based on three-period minimal curved surface space subdivision

Abstract

The invention discloses a heat exchange structure design method based on three-period minimal curved surface space subdivision. The invention provides a heat exchange structure design method based on a three-period minimal curved surface (TPMS) structure, and aims to improve the performance of efficient heat dissipation equipment. According to the method, by generating the Gyandroid structure and conducting multi-layer subdivision, the fluid flowing path is optimized, and the heat exchange efficiency is improved. Meanwhile, by adopting the lightweight composite material for construction, the structural weight is remarkably reduced, and the composite material is suitable for high-efficiency heat dissipation application in the fields of new energy automobile battery heat management, electronic equipment, aerospace and the like. Through finite element simulation analysis, the heat dissipation performance and mechanical strength of the structure are verified, efficient heat dissipation can be achieved in a limited space, and the service life of equipment is prolonged.

Description

Technical Field

[0001] The present invention relates to a heat exchange structure design for efficient heat dissipation, which specifically belongs to the field of heat exchange technology and is applicable to the design of efficient heat exchangers in the fields of new energy vehicle battery thermal management systems, electronic equipment heat dissipation, and aerospace. In particular, it relates to the application of multi-layer segmentation technology based on a triply periodic minimal surface (TPMS) structure in a heat exchanger. Background Art

[0002] With the rapid development of high-power-intensive equipment such as new energy vehicles, electronic devices, and servers, the trend of miniaturization and high performance of equipment has become more and more obvious, bringing higher heat dissipation requirements. If the large amount of heat generated during operation cannot be dissipated in time, it may cause the performance of the equipment to decline, or even cause safety hazards. For example, in new energy vehicles, lithium battery packs will generate a lot of heat when working. Insufficient heat dissipation will cause the internal temperature of the battery to continue to rise, which may cause the diaphragm to fail, and in severe cases, cause thermal runaway, and even cause fire or explosion. Therefore, achieving efficient heat dissipation in a limited space has become a key issue to ensure equipment safety and extend service life.

[0003] At present, traditional heat dissipation technologies mainly include air cooling and liquid cooling. Although they can work effectively in some fields, for high-power-intensive equipment, the efficiency of traditional heat dissipation technologies is difficult to meet the requirements. In addition, traditional heat exchangers usually use copper or aluminum as materials. Although these metals have good thermal conductivity, they are heavy. Especially in compact spaces, such as new energy vehicles, the large size and weight have an adverse effect on the overall performance of the equipment, increasing energy consumption and reducing vehicle range.

[0004] In order to meet these challenges, the triply periodic minimal surface (TPMS) structure has gradually become an emerging heat exchanger design method in recent years. The TPMS structure has the advantages of large specific surface area, high strength and controllable porosity, which can improve the heat dissipation efficiency, and its lightweight characteristics can significantly reduce the weight of the equipment. However, the existing TPMS structure heat exchanger still has room for improvement in fluid flow path optimization and material selection, and has not fully combined with new lightweight composite materials to balance heat dissipation and mechanical properties.

[0005] Therefore, how to further optimize the geometric design of the TPMS structure and improve the heat dissipation performance and structural strength through multi-layer segmentation technology has become a key direction of current radiator design. The present invention proposes a design scheme that can effectively improve the heat dissipation efficiency and mechanical properties of the heat exchanger by geometrically optimizing the TPMS structure and introducing multi-layer segmentation technology. This design not only greatly reduces the structural weight, but also improves the overall heat exchange efficiency. It is particularly suitable for high-efficiency heat dissipation fields such as new energy vehicle battery thermal management, electronic equipment heat dissipation, and aerospace, and has broad application prospects. Summary of the invention

[0006] 1. Technical issues to be resolved

[0007] The heat exchanger design in the prior art, especially in the application of high-power intensive equipment such as new energy vehicles, electronic equipment and aerospace, has many limitations. Traditional heat exchangers usually use metal materials such as copper or aluminum. Although they have good thermal conductivity, they are heavy and increase the total mass of the equipment. Especially in occasions with high requirements for lightweight, such as new energy vehicles, this type of design will significantly affect the energy efficiency and endurance of the vehicle. At the same time, traditional heat exchangers are also relatively large in size and difficult to arrange efficiently in a limited space. In addition, the heat dissipation efficiency of traditional heat exchangers is limited, and it is difficult to cope with the heat generated by high-power equipment, resulting in overheating of the equipment during operation, which in turn affects its performance and service life. Moreover, although the existing TPMS structure has shown potential in radiator design, due to the limitations of its geometric design, it is still impossible to achieve the maximum specific surface area and optimization of the fluid heat transfer path, which limits the further improvement of heat exchange efficiency.

[0008] In order to solve the above problems, the present invention proposes a multi-layer split heat exchanger design method based on a three-periodic minimal surface (TPMS) structure. By performing geometric optimization on the basis of the TPMS structure and introducing multi-layer split technology, the present invention effectively improves the heat dissipation performance and mechanical strength of the heat exchanger. First, by adopting lightweight composite materials and combining the characteristics of the TPMS structure, the total weight of the heat exchanger is significantly reduced, so that it can meet the needs of lightweight design while maintaining high thermal conductivity, and is particularly suitable for new energy vehicles and aerospace fields. Secondly, through the design of geometric optimization and multi-layer split, the specific surface area of ​​the heat exchanger and the contact area of ​​the fluid are greatly increased, and the flow path of the fluid is optimized. In this way, the fluid can more fully contact the surface of the structure when passing through the heat exchanger, achieving more efficient heat transfer and significantly improving the overall heat dissipation efficiency. In addition, the multi-layer split design further enhances the mechanical properties of the heat exchanger, not only improves its impact resistance, but also effectively reduces the structural deformation problem caused by changes in external pressure, thereby extending the service life of the equipment.

[0009] In summary, the present invention effectively solves the deficiencies of existing heat exchangers in weight, volume, heat dissipation performance and mechanical properties by optimizing the geometric design of the TPMS structure and combining multi-layer segmentation technology. This technology not only improves the heat dissipation efficiency of the heat exchanger, but also reduces the energy consumption of the equipment. It has a wide range of application prospects and is particularly suitable for the thermal management of new energy vehicle batteries, heat dissipation of electronic equipment and efficient heat exchange requirements in the aerospace field.

[0010] (II) Technical solution

[0011] In order to solve the above technical problems, the basic geometric model of the three-periodic minimal surface (TPMS) is first created by writing code, and then various types of segmented structures are generated by precisely controlling the design parameters. The present invention uses the Gyroid structure as an example and is implemented through the following steps:

[0012] S1: Based on the mathematical definition of minimal surface, the mathematical expression of Gyroid surface is derived. Gyroid surface is a periodic minimal surface with good geometric properties and large specific surface area, which is suitable for heat exchanger design;

[0013] S2: Based on the Gyroid surface expression derived in S1 and the modeling principle of traditional TPMS, write the corresponding modeling code to generate a three-dimensional model of the Gyroid structure. This step will provide the basic Gyroid geometric structure as the basis for subsequent optimization design;

[0014] S3: Based on S2, the modeling method of the multi-layer segmentation structure is further derived. The multi-layer segmentation structure is generated by modifying the basic TPMS model. In this step, the geometric parameters are precisely controlled and examples of segmentation at different levels are shown. Figure 1 As shown, to optimize the performance of the heat exchanger;

[0015] S4: The specific surface area of ​​the basic structure in S2 and the multi-layer split structure in S3 are measured and the heat dissipation performance is analyzed. By increasing the specific surface area, the contact efficiency between the fluid and the heat exchanger surface can be improved, thereby improving the overall heat dissipation performance.

[0016] S5: Based on the analysis results in S4, a combined subdivision structure is further generated. The combined structure further optimizes the heat transfer performance through different subdivision levels and geometric designs, so that the heat exchanger can achieve efficient heat dissipation in a complex thermal management system.

[0017] S6: According to the different split structures generated in S5, the specific energy absorption performance and specific surface area are measured and compared. By comparing the specific energy absorption and specific surface area, the split structure that achieves the best balance between energy absorption capacity and heat dissipation performance is selected, providing a basis for structural optimization in practical applications.

[0018] S7: Independently design the heat exchanger structure according to actual needs and applications.

[0019] (III) Beneficial effects

[0020] The beneficial effects of the present invention are as follows:

[0021] 1. The present invention optimizes the design of the model through segmentation, significantly increasing the specific surface area and reducing the wall thickness compared to the traditional structure. This feature has important application value in the field of new energy vehicles, especially providing key guidance in the design of lightweight and efficient heat exchangers. By reducing the wall thickness and increasing the specific surface area, the present invention can significantly improve the heat exchange performance without sacrificing the structural strength, meeting the strict requirements of new energy vehicles for lightweight and efficient heat exchange.

[0022] 2. The split model designed by the present invention shows significant advantages in heat transfer performance. Some experimental results are as follows Fig.10 As shown in the figure, under the same volume fraction conditions, the heat transfer performance of the single-cell model is improved by 17% compared with the traditional model; under the set boundary conditions, the heat transfer performance of the two-layer split structure of the triple-cell model is improved by 44% compared with the traditional triple-cell structure. These improvements are due to the split design that optimizes the distribution of fluid flow paths and heat transfer surface areas, making heat transfer more efficient and suitable for scenarios that require efficient heat transfer, such as high-power-intensive electronic devices and new energy vehicles.

[0023] 3. In terms of energy absorption, the combined split structure of the present invention shows better performance than the traditional Gyroid structure. The structure can effectively mitigate external force impact and ensure more efficient energy absorption. In the mechanical performance test, the energy absorption capacity of the combined split model increased by 1.3%. In addition, the specific surface area increased by about 2.26 times compared with the traditional structure, providing strong support for the overall performance improvement of the structure. This feature makes the structure particularly suitable for applications in fields that require both high energy absorption and high heat exchange performance, such as automotive collision protection and equipment protection in high temperature environments.

[0024] 4. The multi-layer segmentation and combined structure design proposed in the present invention provides extremely high flexibility. By adjusting the design parameters of different segmentation levels and regions, it can flexibly adapt to the needs of different application scenarios. Whether in the field of new energy vehicles with high lightweight requirements or in electronic equipment with obvious requirements for efficient heat exchange, the design of the invention can meet application requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 : Multi-layer decomposition structure in step S3

[0026] Figure 2 : Specific surface area at different volume fractions and number of subdivision layers in step S4

[0027] Figure 3 : Heat transfer model of the two-layer segmentation result in step S4

[0028] Figure 4 : Heat transfer of different number of subdivision layers at different volume fractions in step S4

[0029] Figure 5 : Multiple combined decomposition structures in step S5

[0030] Figure 6 : Load the assembly drawing in step S6

[0031] Figure 7 : Histogram of specific energy absorption and specific surface area of ​​different segmented composite structures under quasi-static compression test in step S6

[0032] Figure 8 : Flowchart of the design method in step S7

[0033] Fig. 9 : Example of heat exchanger in step S7

[0034] Fig.10 :The heat transfer variation of the two-layer model with different cell numbers under 40% volume fraction DETAILED DESCRIPTION

[0035] In step S1, the parameter coordinates of the three-periodic minimal surface (TPMS) can be derived through the Weierstrass function. The geometric structure of the TPMS can be solved by the following mathematical expression:

[0036]

[0037]

[0038]

[0039] in, is calculated from a fixed point To a variable point The coefficients are obtained by the numerical value of . In this form, the parametric coordinates of the TPMS surface can be obtained. Next, the geometric structure of the TPMS is derived using the level set approximation equation defined by the Fourier series. The equation is as follows:

[0040]

[0041] in, is the reciprocal vector, is the phase shift, the structure factor is with the given The associated amplitude, is a vector of spatial positions. When the series is truncated to the leading term, a function consisting of a combination of trigonometric functions is generated. , satisfying the following equation:

[0042] ,

[0043] The final mathematical expression of the Gyroid surface is:

[0044] ,

[0045] in, , , . represents the macroscopic size of the entire surface, Through the above steps, the key geometric parameters required for the Gyroid surface can be determined, thus laying the foundation for the subsequent TPMS structure optimization.

[0046] Step S2: Based on the Gyroid surface expression derived in S1 and the modeling principle of traditional TPMS, write the corresponding modeling code to generate a three-dimensional model of the Gyroid structure. The specific steps are as follows:

[0047] S21: The traditional TPMS model is constructed by generating two independent and non-intersecting surfaces with different constant 𝑐 values. and The volume they enclose is constructed using a Boolean difference operation to complete the model. The intermediate area between the two surfaces generated by this operation Filled with solid material, its structure is expressed as follows:

[0048]

[0049] in Represents the regular hexahedral space region where the surface is located. The thickness of the generated solid structure can be adjusted and The value of is determined; among them, the - The larger the absolute value, the thicker the model. Therefore, when modeling, adjusting these parameters is the key to building TPMS structures of different thicknesses.

[0050] S22: Define the basic parameters of the three-periodic minimal surface (TPMS), including the unit cell size L_cell and the mesh step size. In this step, the code generates a 3D mesh for modeling by inputting these parameters. The code uses MATLAB to ensure the accuracy and details of the geometric model through preset unit cell and mesh settings.

[0051] S23: Based on the mathematical formula derivation in S1, use the code to generate the Gyroid surface model.

[0052] S24: According to the derived Gyroid surface formula, the isosurface and isocaps functions are called to extract isosurfaces and cross sections. The isosurface function is used to extract isosurfaces of specified values, while the isocaps function can generate cross-section data to ensure the integrity and closure of the Gyroid structure.

[0053] S25: Combine the generated isosurfaces and cross-section data and ensure the closure of the surface. The code in this step needs to be logically controlled to ensure that the model has no gaps in the three-dimensional space and that the surfaces are continuous, so as to build a complete geometric model.

[0054] S26: Use the stlwrite function to export the generated TPMS geometry model as an "STL" file. This file format can be used for 3D printing or further numerical analysis. The code needs to complete the process of converting the geometry data into a standard STL file to ensure that the output file format is correct and can be used for subsequent simulation or production applications.

[0055] Step S3:

[0056] S31: A multi-layer segmentation construction method is derived from the construction method of the traditional TPMS model in step S21. When constructing a two-layer segmentation structure, four different constant c values ​​need to be called, and the structure is expressed as follows:

[0057]

[0058] Similarly, the three-layer split structure is expressed as:

[0059]

[0060] Among them (i=1,2,3,4,5,6) are different constant 𝑐 values ​​in the Gyroid surface equation. Based on this idea, by adjusting these 𝑐 values, the geometric thickness and distribution of each layer of the subdivision structure can be controlled, thereby forming different hierarchical subdivision structures. Based on this method, regardless of the number of subdivision layers, the construction of a multi-layer structure can be achieved by flexibly adjusting multiple 𝑐 values. This flexible design method not only enhances the design freedom of the TPMS subdivision structure, but also provides a larger operating space for generating multi-layer subdivision structures with different mechanical and thermal properties, so that it can customize excellent performance heat exchange structures according to needs in actual manufacturing.

[0061] S32: Modify the code in S2 according to the multi-layer partitioning principle in S32 to construct a multi-layer partitioning structure. For example, Figure 1 shown.

[0062] Step S4: The present invention analyzes the influence of different segmentation parameters on the specific surface area and heat dissipation performance of the TPMS structure. The specific analysis process is as follows:

[0063] S41: Calculate the specific surface area of ​​the TPMS structure. The calculation formula for the specific surface area (SSA) is as follows:

[0064] in, represents the total surface area of ​​the model, Represents the total volume of the model. The specific surface area is defined as the ratio of the surface area of ​​the model per unit volume to the volume. It is used to measure the effective heat transfer surface provided by the structure per unit volume. The present invention adjusts the partitioning parameters to explore their influence on the specific surface area, thereby optimizing the model design to improve the heat transfer performance. The invention measures the change in the specific surface area of ​​the model under different volume fractions and partitioning layer numbers. The relevant comparison results are shown in Figure 2. Figure 2 shown.

[0065] S42: The TPMS model generated in steps S2 and S3 is analyzed for heat dissipation through simulation software. The conjugate heat transfer model of COMSOL is used to simulate the thermal fluid coupling behavior in the porous medium through the conjugate heat transfer interface. The equations of the fluid field and the solid field are coupled to simulate the interaction between the fluid and the solid, including heat transfer and mass transfer. Specifically, the analysis of the fluid region is as follows:

[0066]

[0067]

[0068] In the fluid region, the conservation of mass per unit fluid represents the conservation of energy per unit time. Momentum flux is expressed as Indicates that is the heat conduction flux, is the heat flux from outside into the fluid domain. It is important to note that at any particular point in time and space, the mass and energy of the system remain constant.

[0069] S43: In the solid region, the heat transfer process is described by the following equation:

[0070]

[0071] in, Represents the external heat flux entering the solid region. In the solid region, the heat transfer process in the solid is realized. The negative sign of the heat flux indicates the direction of the heat flow from the high temperature area to the low temperature area.

[0072]

[0073]

[0074] in and are the temperatures of the solid and fluid on the boundary, respectively. During the calculation, the fluid-solid coupling interface mesh is associated using a random handover method. This method is highly applicable and allows a certain deviation between the fluid and solid meshes. The physical fields on both sides of the coupling interface exchange data through node interpolation on the coupling interface.

[0075] S44: Through the calculation of the above fluid-solid heat transfer equation, the temperature difference and heat generated by the fluid (air) passing through the solid structure are used to reflect the heat dissipation performance of the solid structure (TPMS split structure). Under given working conditions, the heat dissipation effect of the TPMS split structure is evaluated by calculating the heating energy of the air. The calculation formula is:

[0076]

[0077] in, is the energy of heating the air, in joules (J); m is the mass of the air, in kilograms (kg); is the specific heat capacity of air, expressed in joules per kilogram degrees Celsius (J / kg*k); It is the change in air temperature in degrees Celsius (℃).

[0078] S45: Set simulation boundary conditions to simulate heat dissipation performance. The specific conditions are as follows:

[0079] 1. The fluid medium is air, the inlet temperature is 293.15 K (20 °C), and the flow rate is 0.1 m / s;

[0080] 2. The surface of the model in contact with the surrounding environment is insulated;

[0081] 3. The heat source power of the simulated heat source is 30 W, and the material is copper. The simulated heat dissipation structure is composed of a 30 mm × 5 mm × 5 mm rectangular air flow channel, with a 5 mm × 5 mm × 1 mm heat source arranged 10 mm away from the inlet, and a 5 mm × 5 mm × 5 mm TPMS structure on top, whose structural material is Ti-6A1-4V.

[0082] Taking the two-layer split structure as an example, the above boundary conditions are set for simulation and a model schematic diagram is generated ( Figure 3 The invention calculates the heat dissipation changes of different number of subdivision layers under different volume fractions, and the calculation results are shown in Figure 4 shown.

[0083] Step S5: Based on the mechanical properties and heat dissipation performance results of the simulation analysis in S4, the present invention further proposes a design scheme for a combined split structure. The simulation results show that the split structure exhibits excellent performance in terms of mechanical strength and heat dissipation efficiency. Therefore, the present invention aims to further improve its performance through an innovative combined split design.

[0084] S51: The core of the design of the combined partitioning structure is to evenly partition the regular hexahedron space along the Z axis to form three regions, and fill each region with different forms of partitioning structures. This partitioning design optimizes the function of the heat exchanger in different spaces by applying partitioning structures with different characteristics in different regions, thereby improving the mechanical properties and heat dissipation effect of the overall structure. Taking the regular hexahedron with a volume fraction of 40% and a side length of 25 mm designed by the present invention as an example, its design principle is as follows:

[0085]

[0086]

[0087]

[0088] In the above formula, Represent different subdivision forms in the three regions. and From the equation, we know that represents the bottom layer of the combined decomposition structure, represents the middle layer of the combined decomposition structure, represents the top level of the composite decomposition structure, where .

[0089] S52: According to this design principle, various combined subdivision structures can be designed by adjusting different regional subdivision parameters. Figure 5 Schematic diagrams showing various combined segmentation structures.

[0090] Step S6: Based on the different combined subdivision structures generated in S5, mechanical properties analysis and specific surface area calculation are performed. The specific steps are as follows:

[0091] S61: According to the specific surface area calculation formula in S4, the different combined subdivision structures in S5 are measured.

[0092] S62: Analyze the mechanical properties of the product using Abaqus software. This step includes the following sub-steps:

[0093] 1. Model pre-processing: Use Hypermesh to generate shell unit mesh for the combined mesh model in step S5. By setting the mesh size reasonably, the calculation efficiency is optimized while ensuring the accuracy of mechanical simulation. The generated mesh model is then imported into Abaqus software for mechanical analysis.

[0094] 2. Material constitutive model setting: Ti-6Al-4V titanium alloy was selected as the material, and its mechanical properties parameters, including elastic modulus, density and yield stress, were set to ensure that the material properties were consistent with the experimental conditions.

[0095] 3. Loading conditions and boundary conditions: In Abaqus, the boundary conditions of the simulation compression experiment are crucial. The compression experiment is simulated by setting the degrees of freedom of the upper and lower rigid walls. The upper rigid wall only retains the degrees of freedom in the loading direction and is compressed at a constant speed of 4 m / s to simulate the quasi-static crushing process. Figure 6 shows the loading assembly diagram,

[0096] 4. Unit type: The model adopts S4R unit type and limits the hourglass effect to less than 5% through the hourglass control strategy to ensure the accuracy of the simulation results.

[0097] 5. Contact definition: The interaction between models is defined using the general contact method. Normal contact is set to "hard contact" and tangential contact uses the Coulomb friction model to capture the self-contact behavior between the model and the rigid wall and inside the model. This contact model ensures the physical authenticity of the contact behavior in the simulation.

[0098] 6. Simulation analysis: Finally, based on the above settings, simulation is performed to simulate the mechanical response of the combined subdivision structure under different loading conditions. Simulation results ( Figure 7 The results of surface area analysis can be used to evaluate the mechanical properties of different combined subdivision structures under compressive loads and select the optimal structural design in combination with the specific surface area results.

[0099] Step S7: Design a heat exchanger structure that meets the requirements according to specific application requirements. In practical applications, different devices have different requirements for heat exchangers. Therefore, the present invention further optimizes the structural design of the heat exchanger based on the above-mentioned design method of the split structure and the simulation analysis results. The specific steps include:

[0100] 1. Determine the heat exchange requirements: Based on factors such as the power consumption, working environment temperature, and heat exchange efficiency requirements of the target equipment, clarify the performance requirements of the heat exchanger under actual working conditions, such as heat exchange capacity, volume restrictions, and weight constraints.

[0101] 2. Select the parameters of the segmentation structure: Combine the multi-layer segmentation structure generated in S5 and S6, and adjust the parameters such as the number of segmentation layers, volume fraction, wall thickness, etc. according to specific needs. Give priority to the segmentation structure with the best specific surface area and mechanical properties to ensure the stable performance of the heat exchanger under different load and temperature environments.

[0102] 3. Simulation verification and optimization: After the initial design is completed, finite element simulation is used to further verify the design scheme, especially the analysis of heat transfer performance, fluid dynamics behavior and mechanical strength. The design parameters are adjusted according to the simulation results to ensure that the design can meet all requirements in actual use.

[0103] 4. Additive manufacturing and testing: Finally, use additive manufacturing or other suitable process methods to make samples of the heat exchanger. Through experimental testing, verify its heat transfer effect, mechanical strength and service life in the actual working environment. Further optimization based on the test results ensures that the heat exchanger has excellent performance under actual working conditions.

[0104] This is the design method flow, the flow chart is as follows Figure 8 As shown. The example given in the present invention ( Fig. 9 ) is for reference only. The actual design needs to be adjusted and optimized according to specific needs and application conditions.

Claims

1. A heat exchange structure design method based on three-periodic minimal surface (TPMS) space partitioning, characterized in that: The method comprises the following steps: Step S1: Based on the geometric characteristics of the three-periodic minimal surface TPMS, a Gyroid structure is constructed. The Gyroid structure is expressed by the mathematical formula: , Determine the surface geometry; Step S2: dividing the Gyroid structure into multiple layers, wherein the number of layers and the thickness of each layer of the divided structure are controlled by parameters, and the porosity, specific surface area and fluid flow channel are adjusted to meet different heat exchange requirements; Step S3: introducing different materials into the split structure, wherein a lightweight composite material (such as Ti-6Al-4V alloy) is used to make the main structure, and the balance between mechanical properties and heat dissipation efficiency is optimized through material distribution; Step S4: Based on the segmented geometric structure, perform fluid dynamics simulation to calculate the optimal design of the fluid flow path to improve the heat exchange efficiency; Step S5: According to the simulation results, the mechanical properties and heat dissipation performance of the structure are optimized, and finally a heat exchanger with efficient heat dissipation capability and high strength is generated.

2. The heat exchange structure design method according to claim 1, characterized in that: The Gyroid structure generates a three-periodic minimal surface through the Weierstrass function, and the period parameter and scale parameter of the surface are adjustable to achieve different volume fractions and topological characteristics.

3. The heat exchange structure design method according to claim 1, characterized in that: The number of the divided layers is no less than three, the thickness and porosity of each layer are precisely adjusted according to the heat dissipation requirements of the actual application, and the contact area between the divided layer and the fluid is designed to be maximized to improve the heat exchange efficiency.

4. The heat exchange structure design method according to claim 1, characterized in that: The fluid heat transfer simulation of the subdivided structure is performed by finite element simulation software (such as COMSOL or abaques), and the simulation analysis includes the fluid flow path, heat transfer rate and pressure loss to optimize the fluid transmission performance of the Gyroid structure.

5. The heat exchange structure design method according to any one of claims 1 to 4, characterized in that: The optimization process of the split structure also includes mechanical performance simulation, which evaluates the strength, deformation and energy absorption capacity of the split structure based on different loading conditions to ensure its structural stability and durability in practical applications.

6. The heat exchange structure design method according to any one of claims 1 to 5, characterized in that: The heat exchanger is suitable for new energy vehicle battery thermal management systems, electronic equipment heat dissipation and aerospace fields, especially in application scenarios with high-efficiency heat dissipation requirements in high-power intensive equipment.

7. The heat exchange structure design method according to any one of claims 1 to 6, characterized in that: The heat exchange structure is integratedly prepared by using additive manufacturing technology, wherein the geometric features of the Gyroid structure and the thickness of the segmented layers are realized by parameterized settings of 3D printing software to ensure accuracy and manufacturing flexibility.

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