Integrated compression molding method and system for energy storage-bearing thin-wall component

Abstract

The invention provides an integrated compression molding forming method and system for an energy storage-bearing thin-wall component, and the method comprises the steps: selecting an area within a strain requirement to arrange the distribution of energy storage elements in the component based on forming simulation, reserving open holes in fiber-reinforced resin prepreg according to a design position, and then laying the fiber-reinforced resin prepreg; a plurality of high-temperature-resistant soft package energy storage elements are placed in the notches of the fiber reinforced resin prefabricated body; the positive electrode and the negative electrode of the high-temperature-resistant soft package energy storage element are wrapped by a termination adhesive tape and are led out from a prepreg layer, and then the outer side of the positive electrode and the outer side of the negative electrode are packaged with prepreg and pre-compacted; heating and softening the prefabricated body, putting the prefabricated body into a medium and low temperature component forming mold, heating and pressurizing, and then cooling, so as to integrally form the energy storage-bearing composite material component; and uncovering the termination adhesive tape on the energy storage-bearing composite material component, connecting the positive electrode and the negative electrode of each energy storage element in the component to a battery management system, and carrying out low-current charge-discharge circulation at the rate of 0.1 C to obtain the stable energy storage-bearing integrated component.

Description

Technical Field

[0001] The present invention relates to the technical field of manufacturing multifunctional composite materials, and specifically, to an integrated molding method and system for an energy storage-bearing thin-walled member. Background Art

[0002] Lightweight, long endurance, and strong structure are the eternal pursuits of advanced equipment. For equipment to withstand more severe working conditions, it is crucial to save energy. Electric equipment represented by lithium-ion electric vehicles and electric aircraft has started large-scale R & D investment and popularization. However, compared with traditional fossil energy, the specific energy of lithium batteries is far lower than the actual usage requirements and is difficult to break through in a short time. Problems such as large battery weight, large volume, weak structure, and short endurance have gradually emerged. Existing engineering technologies can only continue to stack battery packs to further extend the endurance by squeezing the cargo space of the equipment and the risk of thermal mechanical management.

[0003] By integrating the two functions of energy storage and load bearing into one, forming an integrated energy storage-bearing structure energy storage component (Structural Power Structures, SPS), is one of the key means to improve the specific energy of the system. On the one hand, the structural energy storage component avoids the problems of difficult heat dissipation and high danger existing in the centralized energy storage of existing power batteries. The energy storage elements are actively distributed on the vehicle body structure, increasing the cargo space, greatly increasing the heat dissipation area, and reducing the risk of global thermal runaway and overall power failure disasters caused by local failure. On the other hand, the energy storage elements dispersed in the structure can supply power to electrical equipment with shorter circuits, reducing the line loss of electricity consumption.

[0004] However, in the face of structural components with complex geometries, how to embed energy storage elements into them and integrally form multifunctional components with a fast rhythm is an urgent problem to be solved. The field still needs to propose more advanced and efficient design and manufacturing methods for high-performance energy storage-bearing integrated composite components.

[0005] Patent application document CN105845445A discloses a composite material structural member capable of storing / releasing electric charges, its preparation method and application. The composite material structural member is formed by stacking structural member monomers with a layered structure. The two sides of the structural member monomer with a layered structure are symmetric from the center outwards. From the center outwards, they are an electrolyte diaphragm, an electrolyte, a conductive electrode, a current collector, an insulation and encapsulation layer in sequence. Using the molding process of the composite material, composite material components capable of storing / releasing electric charges with different shapes and structures can be prepared, such as circular tubes, C-shaped beams, I-shaped beams, etc. However, this patent cannot completely solve the existing technical problems and cannot meet the requirements of the present invention. Summary of the Invention

[0006] Aiming at the defects in the prior art, the purpose of the present invention is to provide an integrated molding method and system for an energy storage-bearing thin-walled member.

[0007] The integrated molding method for an energy storage-bearing thin-walled member provided by the present invention includes:

[0008] Step S1: Based on the thermo-mechanical coupling forming simulation, select the area where the strain is less than the preset threshold during the forming process to arrange the distribution of energy storage elements in the member, and make cuts or lay tapes in a circular pattern in the fiber-reinforced resin prepreg according to the preset positions to reserve openings, and then perform layup;

[0009] Step S2: Embed a plurality of high-temperature resistant soft-pack energy storage elements in the gaps of the fiber-reinforced resin preform;

[0010] Step S3: Wrap the positive and negative electrodes of the high-temperature resistant soft-pack energy storage elements with termination tapes, lead them out from between the prepreg layers, and then encapsulate the outside with prepreg and perform pre-compaction to obtain an energy storage-bearing composite material preform;

[0011] Step S4: Heat the energy storage-bearing composite material preform to 80°C to 200°C to soften it, put it into a medium-low temperature mold whose temperature is lower than that of the preform, apply a pressure of 5 MPa to 30 MPa and keep it warm for 5 to 30 minutes, and then cool it to integrally form an energy storage-bearing composite material member;

[0012] Step S5: Uncover the termination tapes on the energy storage-bearing composite material member, connect the positive and negative electrodes of each energy storage element in parallel or in series to the battery management system, and perform small-current charge and discharge cycling at a rate of 0.1C to 1C to obtain a stable energy storage-bearing integrated member.

[0013] Preferably, the fiber-reinforced resin prepreg in step S1 includes a thermosetting resin or a thermoplastic resin matrix. Among them, the thermosetting resin is selected from one of epoxy resin, bismaleimide resin, and polyimide resin, and the thermoplastic resin is selected from one of polypropylene, polyether ether ketone, and polyaryl ether ketone; the fiber is selected from carbon fiber, glass fiber, or aramid fiber, and the layup form is unidirectional, plain weave, or three-dimensional fabric;

[0014] The high-temperature resistant soft-pack energy storage element in step S2 is a lithium-ion battery, a sodium-ion battery, or a supercapacitor, with a capacity range of 50 mAh to 500 mAh, a thickness of 1 mm to 6 mm, and the distance between adjacent energy storage elements is 1 to 3 times the thickness of the member to optimize heat dissipation and mechanical properties;

[0015] The termination tape in step S3 is a high-temperature resistant insulating tape, with a thickness of 0.05 mm to 0.2 mm, a width of 5 mm to 15 mm, and the edge of the tape is thermally bonded to the prepreg layer, and the bonding temperature is 80°C to 120°C.

[0016] Preferably, the cooling process in step S4 adopts gradient temperature reduction control, with an initial cooling rate of 5°C / min to 10°C / min. After the temperature drops below 50°C, natural cooling is used to avoid internal stress concentration in the component.

[0017] The heating method of the mold in step S4 is electric heating, oil heating or electromagnetic induction heating. The surface of the mold is coated with a high-temperature release agent, and the release agent is composed of silicone oil or fluororesin-based material.

[0018] Preferably, the battery management system in step S5 is configured to monitor the voltage, temperature and charge-discharge state of the energy storage element in real time, and control the charge-discharge consistency of each element through the equalization circuit.

[0019] Preferably, the distribution pattern of the energy storage elements in the component is uniform array, gradient density or local centralized arrangement;

[0020] The geometric shape of the component includes flat shape, arc shape, variable cross-section shape or bending shape, with a thickness of 1 mm to 6 mm, and the surface is encapsulated by prepreg to form a continuous fiber reinforced layer, and the fiber volume fraction is 50% to 70%.

[0021] The integrated compression molding system for energy storage-bearing thin-walled components provided by the present invention includes:

[0022] Module M1: Based on thermo-mechanical coupling forming simulation, select the area where the strain is less than the preset threshold during the forming process to arrange the distribution of the energy storage elements in the component, and reserve openings through notching or winding tape laying in the fiber reinforced resin prepreg according to the preset positions and then lay them up;

[0023] Module M2: Embed multiple high-temperature resistant soft-pack energy storage elements in the gaps of the fiber reinforced resin preform;

[0024] Module M3: Wrap the positive and negative electrodes of the high-temperature resistant soft-pack energy storage elements with termination tape, lead them out from between the prepreg layers, and then encapsulate the outside with prepreg and perform pre-compaction to obtain an energy storage-bearing composite material preform;

[0025] Module M4: Heat the energy storage-bearing composite material preform to 80°C to 200°C to soften it, put it into a medium and low temperature mold with a temperature lower than that of the preform, apply a pressure of 5 MPa to 30 MPa and keep it warm for 5 to 30 minutes and then cool it to integrally form an energy storage-bearing composite material component;

[0026] Module M5: Uncover the termination tape on the energy storage-bearing composite material component, connect the positive and negative electrodes of each energy storage element in parallel or in series to the battery management system, and perform small current charge and discharge cycles at a rate of 0.1C to 1C to obtain a stable energy storage-bearing integrated component.

[0027] Preferably, the fiber - reinforced resin prepreg in the module M1 comprises a thermosetting resin or a thermoplastic resin matrix. Among them, the thermosetting resin is selected from one of epoxy resin, bismaleimide resin, and polyimide resin, and the thermoplastic resin is selected from one of polypropylene, polyetheretherketone, and polyaryletherketone; the fiber is selected from carbon fiber, glass fiber, or aramid fiber, and the laying form is unidirectional, plain weave, or three - dimensional fabric;

[0028] The high - temperature resistant soft - pack energy storage element in the module M2 is a lithium - ion battery, a sodium - ion battery, or a supercapacitor. Its capacity ranges from 50 mAh to 500 mAh, the thickness is from 1 mm to 6 mm, and the distance between adjacent energy storage elements is 1 to 3 times the thickness of the component to optimize heat dissipation and mechanical properties;

[0029] The termination tape in the module M3 is a high - temperature resistant insulating tape with a thickness of 0.05 mm to 0.2 mm and a width of 5 mm to 15 mm. And the edge of the tape is adhesively bonded to the prepreg layer by hot pressing, and the bonding temperature is 80 °C to 120 °C.

[0030] Preferably, the cooling process in the module M4 adopts gradient temperature reduction control. The initial cooling rate is 5 °C / min to 10 °C / min, and it is naturally cooled after the temperature drops below 50 °C to avoid internal stress concentration in the component;

[0031] The heating method of the mold in the module M4 is electric heating, oil heating, or electromagnetic induction heating. The surface of the mold is coated with a high - temperature resistant mold release agent, and the component of the mold release agent is silicone oil or fluororesin - based material.

[0032] Preferably, the battery management system in the module M5 is configured to real - time monitor the voltage, temperature, and charge - discharge state of the energy storage element, and control the charge - discharge consistency of each element through an equalization circuit.

[0033] Preferably, the distribution pattern of the energy storage elements in the component is uniform array, gradient density, or local centralized arrangement;

[0034] The geometric shape of the component includes flat - plate shape, arc shape, variable cross - section shape, or bending shape, with a thickness of 1 mm to 6 mm, and the surface is encapsulated by prepreg to form a continuous fiber - reinforced layer, and the fiber volume fraction is 50% to 70%.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] (1) The structural energy storage component proposed by the present invention not only has high mechanical properties but also has the characteristics of high energy density. It can store energy while bearing loads, supply energy to electrical equipment, and does not occupy the space of the equipment; on the other hand, the energy storage elements dispersed in the structure can supply power to electrical equipment with shorter circuits, reducing the line loss of electricity consumption;

[0037] (2) By evenly dispersing the energy onto the structure, the present invention greatly increases the heat dissipation area, reduces the thermal management requirements, and further reduces the risk of global thermal runaway and overall power-off disasters caused by local failures, avoiding the overheating and mechanical abuse risks prone to traditional centralized energy storage power batteries.

[0038] (3) The present invention integrally moulds and forms the structure and the energy storage element, avoiding the inefficiency and high discreteness of manual layup when facing complex geometric structures during production, and enabling the large-scale and standardized manufacturing of complex multi-functional components with a faster production rhythm.

[0039] (4) Compared with traditional box-shaped or cylindrical batteries, the present invention can form more complex geometries to meet the requirements of structural space design, thereby dispersing the energy storage elements to various regions of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Other features, objectives, and advantages of the present invention will become more apparent by reading the detailed description of the non-limiting embodiments with reference to the following drawings:

[0041] Figure 1 is a flowchart of the integrally moulding and forming method for the energy storage-bearing thin-walled component of the present invention;

[0042] Figure 2 is a schematic diagram and test results of a flat tensile specimen of the energy storage-bearing integrated composite material of the present invention;

[0043] Figure 3 is a schematic diagram and test results of an energy storage-bearing integrated composite material engineering part of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0044] The present invention will be described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several changes and improvements can still be made. These all fall within the protection scope of the present invention.

[0045] The energy storage-bearing integrated composite material component of the present invention is as shown in S5 of Figure 1 . This embodiment is for the moulding and testing of the energy storage-bearing integrated composite material component, including: energy storage elements and structural composite materials.

[0046] Step S1: Based on the moulding simulation, select the area with a strain ≤ 0.001 during the moulding process to arrange the distribution of the energy storage elements in the component, and reserve openings in the fibre-reinforced resin prepreg according to the designed positions and then perform layup;

[0047] Step S2: Place a number of high-temperature resistant soft-pack energy storage elements in the notch of the fiber-reinforced resin preform described in Step S1;

[0048] Step S3: Wrap the positive and negative electrodes of the high-temperature resistant soft-pack energy storage elements described in Step S2 with termination tape, lead them out from between the prepreg layers, and then encapsulate and pre-compact the outside with prepreg;

[0049] Step S4: Heat and soften the energy storage-bearing composite material preform described in Step S3, place it in a medium and low-temperature component forming mold, heat, press, and then cool to integrally form an energy storage-bearing composite material component.

[0050] Step S5: For the energy storage-bearing composite material component described in Step S4, uncover the insulating termination tape, connect the positive and negative electrodes of each energy storage element in the component to the battery management system, and perform small current charge and discharge cycles at a rate of 0.1C to obtain a stable energy storage-bearing integrated component.

[0051] Example 1

[0052] This example provides an energy storage-bearing integrated composite material flat tensile specimen, and the specific forming steps are as follows:

[0053] T1. Design a uniform arrangement form of energy storage elements on the flat tensile spline, as Figure 2 shown, and cut and stack the T300 plain weave carbon fiber reinforced epoxy prepreg with a single layer thickness of 0.2 mm into a flat shape according to the designed position (layup [0°] 15s , size 500*50*6 mm);

[0054] T2: In the notch of the fiber-reinforced resin preform shown in Figure 2 , place 5 high-temperature resistant soft-pack lithium-ion batteries (working voltage 3.7V, capacity 500 mAh, size 40*30*4 mm);

[0055] T3: Wrap the positive and negative electrodes of the high-temperature resistant soft-pack energy storage elements described in Step T2 with termination tape, lead them out from between the prepreg layers, and then encapsulate and pre-compact the outside with prepreg;

[0056] T4: Heat the energy storage-bearing composite material flat preform described in Step T3 to 100 °C, place it in an 80 °C flat forming mold, heat, press, and cure for 30 min and then cool to integrally form an energy storage-bearing composite material flat tensile specimen;

[0057] T5: For the energy storage-bearing composite material flat tensile specimen described in Step T4, uncover the insulating termination tape, connect the positive and negative electrodes of each energy storage element in the component in parallel to the battery management system, and perform small current charge and discharge cycles at a rate of 0.1C to obtain a stable energy storage-bearing integrated flat tensile specimen;

[0058] T6: Perform a tensile test on the energy storage-load-bearing integrated flat tensile specimen described in step T5; and test the energy storage performance without loading and with a 60% failure load, with a test rate of 0.1C and a cycle voltage of 2.7-4.2V.

[0059] The test results are as follows Figure 2 As shown, the obtained energy storage-load-bearing integrated composite material flat plate tensile specimen has a tensile modulus of 30.5 GPa, a tensile strength of 183.7 MPa, an overall energy density of 44.8 Wh / kg, and has high mechanical and electrical properties; and when subjected to a 60% failure load, the battery discharge capacity only decays by 6.3%, and the overall energy density can still reach 41.5 Wh / kg.

[0060] Embodiment 2

[0061] This embodiment provides an energy storage-load-bearing integrated composite material engineering part component, and the specific molding steps are as follows:

[0062] T1. Cut the T700 unidirectional carbon fiber reinforced polypropylene thermoplastic prepreg with a single layer thickness of 0.1 mm and lay it up into a flat plate (laying [0° / 90°] 5s , size 600*500*2mm);

[0063] T2: Place a high temperature resistant soft pack lithium ion battery (working voltage 3.7V, capacity 100mAh, size 50*60*1mm) into the notch of the fiber reinforced resin preform described in step T1;

[0064] T3: Wrap the positive and negative electrodes of the high temperature resistant soft package energy storage element described in step T2 with the termination tape and lead them out from between the prepreg layers, and then encapsulate and pre-compact the outer sides with prepreg;

[0065] T4: heating the energy storage-load bearing composite material flat plate preform described in step T3 to 200° C., placing it in an engineering part forming mold at 150° C., heating and pressurizing for 5 minutes, and then cooling to form an energy storage-load bearing composite material engineering part in an integrated manner;

[0066] T5: For the energy storage-load bearing composite material engineering part described in step T4, the insulating termination tape is removed, and the energy storage element in the component is subjected to a small current charge and discharge cycle at a rate of 0.1C to obtain a stable energy storage-load bearing integrated engineering part;

[0067] T6: Perform a three-point bending test on the energy storage-load-bearing integrated composite material engineering part described in step T5; and test the energy storage performance without loading, with a test rate of 0.1C and a cycle voltage of 2.7-4.2V.

[0068] The schematic diagram of the formed complex engineering part and the test results are as follows Figure 3 shown. The soft-pack batteries are arranged at the white frames. The three-point bending failure load of the energy storage-bearing integrated composite material engineering part obtained is 7418.0 N, and the energy storage capacity is 90.5 mAh.

[0069] Those skilled in the art know that in addition to implementing the systems, devices, and their respective modules provided by the present invention in the form of pure computer-readable program codes, the method steps can be logically programmed to enable the systems, devices, and their respective modules provided by the present invention to be implemented in the form of logic gates, switches, application-specific integrated circuits, programmable logic controllers, embedded microcontrollers, etc. to implement the same program. Therefore, the systems, devices, and their respective modules provided by the present invention can be regarded as a kind of hardware component, and the modules included therein for implementing various programs can also be regarded as the structures within the hardware component; the modules for implementing various functions can also be regarded as either software programs for implementing the methods or the structures within the hardware component.

[0070] The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. Without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. An integrated molding method for an energy storage - load - bearing thin - walled component, characterized in that, Comprising: Step S1: Based on thermo-mechanical coupling forming simulation, select areas with strain less than a preset threshold during the forming process to arrange the distribution of energy storage elements in the component, and reserve openings in the fiber-reinforced resin prepreg by notching or filament winding according to the preset positions, and then perform layup; Step S2: Embed multiple high-temperature resistant soft-pack energy storage elements in the gaps of the fiber-reinforced resin preform; Step S3: Wrap the positive and negative electrodes of the high-temperature resistant soft-pack energy storage elements with termination tapes, lead them out from between the prepreg layers, and then encapsulate the outside with prepreg and perform pre-compaction to obtain an energy storage-bearing composite preform; Step S4: Heat the energy storage-bearing composite preform to 80°C - 200°C to soften it, place it in a medium and low-temperature mold with a temperature lower than that of the preform, apply a pressure of 5 MPa - 30 MPa and keep it warm for 5 - 30 minutes, and then cool it to integrally form an energy storage-bearing composite component; Step S5: Uncover the termination tapes on the energy storage-bearing composite component, connect the positive and negative electrodes of each energy storage element in parallel or in series to the battery management system, and perform small current charge and discharge cycling at a rate of 0.1C - 1C to obtain a stable energy storage-bearing integrated component.

2. The integrated molding method of the energy storage-bearing thin-walled member according to claim 1, characterized in that The fiber-reinforced resin prepreg in Step S1 includes a thermosetting resin or a thermoplastic resin matrix, wherein the thermosetting resin is selected from one of epoxy resin, bismaleimide resin, and polyimide resin, and the thermoplastic resin is selected from one of polypropylene, polyether ether ketone, and polyaryl ether ketone; the fiber is selected from carbon fiber, glass fiber, or aramid fiber, and the layup form is unidirectional, plain weave, or three-dimensional fabric; The high-temperature resistant soft-pack energy storage element in Step S2 is a lithium-ion battery, a sodium-ion battery, or a supercapacitor, with a capacity range of 50 mAh - 500 mAh, a thickness of 1 mm - 6 mm, and the distance between adjacent energy storage elements is 1 - 3 times the thickness of the component to optimize heat dissipation and mechanical properties; The termination tape in Step S3 is a high-temperature resistant insulating tape, with a thickness of 0.05 mm - 0.2 mm, a width of 5 mm - 15 mm, and the edge of the tape is thermally bonded to the prepreg layer, and the bonding temperature is 80°C - 120°C.

3. The integrated molding method of the energy storage-bearing thin-walled member according to claim 1, characterized in that, The cooling process in Step S4 adopts gradient temperature reduction control, with an initial temperature reduction rate of 5°C / min - 10°C / min, and natural cooling after the temperature drops below 50°C to avoid internal stress concentration in the component; The heating method of the mold in Step S4 is electric heating, oil heating, or electromagnetic induction heating, and the surface of the mold is coated with a high-temperature resistant mold release agent, and the mold release agent is composed of silicone oil or fluororesin-based material.

4. The integrated molding method of the energy storage - load - bearing thin - walled member according to claim 1, characterized in that, The battery management system in Step S5 is configured to monitor the voltage, temperature, and charge and discharge status of the energy storage elements in real time, and control the charge and discharge consistency of each element through an equalization circuit.

5. The integrated compression molding method of the energy storage-bearing thin-walled member according to claim 1, characterized in that, The distribution pattern of the energy storage elements in the component is uniform array, gradient density, or local centralized arrangement; The geometric shape of the component includes flat shape, arc shape, variable cross-section shape, or bending shape, with a thickness of 1 mm - 6 mm, and the surface is encapsulated with prepreg to form a continuous fiber-reinforced layer, and the fiber volume fraction is 50% - 70%.

6. An integrated molding system for energy storage-bearing thin-walled components, characterized in that, Comprising: Module M1: Based on thermo-mechanical coupled forming simulation, select the areas with strain less than the preset threshold during the forming process to arrange the distribution of energy storage elements in the component, and make cuts or wrap tapes around the fiber-reinforced resin prepreg according to the preset positions to reserve openings and then perform layup; Module M2: Embed multiple high-temperature resistant soft-pack energy storage elements in the gaps of the fiber-reinforced resin preform; Module M3: Wrap the positive and negative electrodes of the high-temperature resistant soft-pack energy storage elements with termination tapes, lead them out from between the prepreg layers, and then use prepreg for outer encapsulation and perform pre-compaction to obtain an energy storage-bearing composite material preform; Module M4: Heat the energy storage-bearing composite material preform to 80°C - 200°C to soften it, place it in a medium and low-temperature mold with a temperature lower than that of the preform, apply a pressure of 5 MPa - 30 MPa and keep it warm for 5 - 30 minutes and then cool it to integrally form an energy storage-bearing composite material component; Module M5: Uncover the termination tapes on the energy storage-bearing composite material component, connect the positive and negative electrodes of each energy storage element in parallel or in series to the battery management system, and perform small current charge and discharge cycles at a rate of 0.1C - 1C to obtain a stable energy storage-bearing integrated component.

7. The integrated compression molding system for energy storage - load - bearing thin - walled components according to claim 6, characterized in that, The fiber-reinforced resin prepreg in Module M1 includes a thermosetting resin or a thermoplastic resin matrix, where the thermosetting resin is selected from one of epoxy resin, bismaleimide resin, and polyimide resin, and the thermoplastic resin is selected from one of polypropylene, polyetheretherketone, and polyaryletherketone; the fiber is selected from carbon fiber, glass fiber, or aramid fiber, and the layup form is unidirectional, plain weave, or three-dimensional fabric; The high-temperature resistant soft-pack energy storage element in Module M2 is a lithium-ion battery, a sodium-ion battery, or a supercapacitor, with a capacity range of 50 mAh - 500 mAh, a thickness of 1 mm - 6 mm, and the distance between adjacent energy storage elements is 1 - 3 times the thickness of the component to optimize heat dissipation and mechanical properties; The termination tape in Module M3 is a high-temperature resistant insulating tape, with a thickness of 0.05 mm - 0.2 mm and a width of 5 mm - 15 mm, and the edge of the tape is thermally bonded to the prepreg layer, and the bonding temperature is 80°C - 120°C.

8. The integrated compression molding system for energy storage - load - bearing thin - walled components according to claim 6, characterized in that, The cooling process in Module M4 adopts gradient temperature reduction control, with an initial cooling rate of 5°C / min - 10°C / min, and natural cooling after the temperature drops below 50°C to avoid stress concentration inside the component; The heating method of the mold in Module M4 is electric heating, oil heating, or electromagnetic induction heating, and the surface of the mold is coated with a high-temperature resistant release agent, and the release agent is composed of silicone oil or fluororesin-based material.

9. The integrated molding system for energy storage and load-bearing thin-walled components according to claim 6, characterized in that, The battery management system in Module M5 is configured to monitor the voltage, temperature, and charge and discharge status of the energy storage elements in real time, and control the charge and discharge consistency of each element through an equalization circuit.

10. The integrated molding system for energy storage - load - bearing thin - walled components according to claim 6, characterized in that, The distribution pattern of the energy storage elements in the component is uniform array, gradient density, or local centralized arrangement; The geometric shape of the component includes flat plate shape, arc shape, variable cross-section shape, or bending shape, with a thickness of 1 mm - 6 mm, and the surface is encapsulated with prepreg to form a continuous fiber-reinforced layer, and the fiber volume fraction is 50% - 70%.

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