High-buffering and heat-insulating mica composite part for new energy vehicle battery

Abstract

The invention discloses a high-buffering and heat-insulating mica composite part for a new energy vehicle battery, and the high-buffering and heat-insulating mica composite part comprises a buffering and heat-insulating layer which is used for buffering and heat insulating, is arranged at the bottom of a mica layer and is used for improving thermal runaway protection of a lithium battery cell module; according to the invention, through the arrangement of the buffer thermal insulation layer, the damping and basic thermal insulation capabilities of the composite part are greatly improved, the vibration impact when the battery cell works or is out of control can be buffered, the boron nitride fiber layer and the expanded graphite are mounted in the second organic silicon modified polyurethane foaming buffer thermal insulation layer, and when thermal runaway occurs, the expanded graphite is combusted to form carbon residues, so that the thermal runaway is avoided. Boron nitride fibers and a second organic silicon modified polyurethane foaming buffering and heat-insulating layer are covered with the first organic silicon modified polyurethane foaming buffering and heat-insulating layer, so that the flame-retardant and fireproof performance of a composite part is greatly improved, the damping and heat-insulating capacity of the composite part is enhanced, and the thermal runaway protection effect on a lithium battery cell module is effectively improved; and the safety of the battery of the new energy vehicle and the safety of a driver are better guaranteed.

Description

Technical Field

[0001] This invention belongs to the technical field of thermal runaway protection composite materials for new energy vehicle batteries, and more specifically, it relates to a high-buffering, heat-insulating mica composite component for new energy vehicle batteries. Background Technology

[0002] With the rapid development of the new energy vehicle industry, battery safety has become an increasingly important concern. As the core power source for new energy vehicles, lithium batteries are highly susceptible to thermal runaway, a critical factor threatening their safety. Mica paper, due to its excellent flame retardancy, fire safety, and electrical insulation properties, is widely used in various fields. In particular, three-dimensional irregularly shaped components made of semi-flexible or flexible mica paper hold great potential for thermal runaway protection in new energy vehicles.

[0003] In new energy vehicle battery modules, mica composite components are required between lithium battery cells, demanding excellent flame retardant, fireproof, shock-absorbing, and heat-insulating properties. However, existing mica composite components have suboptimal performance, failing to meet the requirements of consumers and new energy vehicle manufacturers for thermal runaway protection in lithium battery cell modules. Therefore, we need to propose a high-buffering, heat-insulating mica composite component for new energy vehicle batteries. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies where mica composite components have poor performance and fail to meet the requirements of consumers and new energy vehicle manufacturers for thermal runaway protection of lithium battery cell modules. Therefore, this invention proposes a high-buffering, heat-insulating mica composite component for new energy vehicle batteries.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A high-buffering and heat-insulating mica composite component for new energy vehicle batteries includes: a mica layer with multiple sets of protrusions at its bottom, and an adhesive layer on the bottom of the mica layer and on the multiple sets of protrusions; a buffer and heat-insulating layer for buffering and heat insulation, disposed at the bottom of the mica layer, for improving thermal runaway protection of the lithium battery cell module, wherein multiple sets of grooves corresponding to the protrusions are formed on the buffer and heat-insulating layer, the protrusions are inserted into the inside of the grooves, and the buffer and heat-insulating layer is fixed to the bottom of the mica layer by the adhesive layer.

[0006] Through the above technical solution, by combining the adhesive layer, groove and protrusion, the adhesive layer not only covers the bottom of the mica layer, but also covers the surface of the protrusion. When the protrusion is inserted into the groove, the adhesive layer at the bottom of the mica layer will contact the top of the buffer insulation layer, and the adhesive layer on the surface of the protrusion will contact the inner wall of the groove, thereby increasing the contact area between the mica layer and the buffer insulation layer and improving the connection effect between the buffer insulation layer and the mica layer. The bumps are made of the same material as the mica layer.

[0007] Preferably, the buffer insulation layer includes a first silicone-modified polyurethane foam buffer insulation layer, a second silicone-modified polyurethane foam buffer insulation layer, a boron nitride fiber layer, expanded graphite, and spacers. The second silicone-modified polyurethane foamed buffer insulation layer is integrally formed at the bottom of the first silicone-modified polyurethane foamed buffer insulation layer. An installation groove is provided in the second silicone-modified polyurethane foamed buffer insulation layer. Multiple sets of expanded graphite and spacers are provided. Multiple sets of spacers are evenly arranged inside the installation groove. Placement channels are left between adjacent spacers. Multiple sets of expanded graphite are correspondingly arranged inside multiple placement channels. The boron nitride fiber layer is arranged inside the installation groove, and multiple sets of expanded graphite and spacers are in contact with the boron nitride fiber layer.

[0008] Through the above technical solution, by combining the first silicone-modified polyurethane foam buffer and heat insulation layer with the second silicone-modified polyurethane foam buffer and heat insulation layer, the double silicone-modified polyurethane foam buffer and heat insulation layers are stacked, which greatly improves the shock absorption and basic heat insulation capabilities of the composite component, and can buffer the vibration and impact when the battery cell is working or running out of control. By combining boron nitride fiber layers, expanded graphite, and spacers, the synergistic effect of the boron nitride fiber layers and expanded graphite forms a core protection system. The boron nitride fiber layers exhibit excellent high-temperature resistance and thermal conductivity regulation performance, while the carbon residue layer formed after the expanded graphite burns can tightly cover the surface of the boron nitride fiber layers and the second organosilicon-modified polyurethane foam buffer insulation layer, constructing a highly efficient flame-retardant barrier to block heat transfer and flame spread. The overall structure achieves synergistic optimization of flame-retardant, fireproof, shock-absorbing, and heat-insulating performance, significantly enhancing the thermal runaway protection effect of lithium battery cell modules, providing reliable protection for the safety of new energy vehicle batteries, and meeting the stringent requirements of manufacturers and consumers.

[0009] Preferably, the spacer is integrally formed on the second silicone-modified polyurethane foam buffer insulation layer.

[0010] Through the above technical solution, the partition is made of the same material as the first organosilicon-modified polyurethane foam buffer insulation layer and the second organosilicon-modified polyurethane foam buffer insulation layer. The partition serves to separate multiple groups of expanded graphite. In the event of thermal runaway, the char residue formed by the combustion of expanded graphite can be sealed in the placement channel, thus protecting the top boron nitride fiber layer. This constructs a highly efficient flame-retardant barrier, blocking heat transfer and flame spread, and achieving flame retardancy and fire prevention.

[0011] Preferably, the cross-section of the protrusion is square, the groove is adapted to the protrusion, the groove is a square groove, and the protrusion contacts the inner wall of the groove.

[0012] By using the above technical solution, through the cooperation of grooves and protrusions, after the protrusions are fixed inside the buffer insulation layer by the adhesive layer, the protrusions penetrate deep into the buffer insulation layer, which can improve the connection effect between the mica layer and the buffer insulation layer.

[0013] Preferably, the mica layer further includes a first mica paper and a second mica paper; The first mica paper is fixedly connected above the second mica paper, and a second fiberglass mesh is provided between the first mica paper and the second mica paper. The second fiberglass mesh is hot-pressed and laminated between the first mica paper and the second mica paper.

[0014] The above technical solution, through the setting of the second fiberglass mesh, can effectively improve the overall mechanical strength, tear resistance, and wear resistance.

[0015] Preferably, it also includes multiple sets of connecting parts, all of which are fixedly connected to the second fiberglass mesh cloth. The connecting parts are arranged correspondingly to the protrusions and are located inside the protrusions.

[0016] By using the above technical solution, and by setting the connecting part inside the protrusion, the strength of the protrusion installed on the bottom of the second mica paper can be increased, and the tear resistance of the protrusion can be improved.

[0017] Preferably, the top of the first mica paper is hot-pressed with a first fiberglass mesh.

[0018] Through the above technical solution, the first fiberglass mesh, the second fiberglass mesh, and the connecting part are all treated with silicone-modified polyurethane resin to form a silicone-modified polyurethane adhesive layer, which ensures that the whole has good flame retardant and fireproof performance, cushioning and heat insulation performance, tear resistance performance, and mechanical properties.

[0019] Preferably, both the first silicone-modified polyurethane foam buffer insulation layer and the second silicone-modified polyurethane foam buffer insulation layer are made of silicone-modified polyurethane foam resin.

[0020] Preferably, the cross-section of the protrusion is tapered, and the groove is adapted to the protrusion, and the groove is also tapered.

[0021] By using the above technical solution, by setting the cross-section of the protrusion to be conical and the groove to be conical, it is easy to align the protrusion with the groove when the mica layer is installed on the buffer insulation layer, and it is easy for the protrusion to be inserted into the inside of the groove.

[0022] Technical effects and advantages of the present invention: The high-buffering and heat-insulating mica composite component for new energy vehicle batteries provided by the present invention has the following advantages compared with the prior art: This invention utilizes a buffer insulation layer. A second silicone-modified polyurethane foam buffer insulation layer is positioned at the bottom of the first silicone-modified polyurethane foam buffer insulation layer. This dual-layer configuration significantly enhances the composite component's shock absorption and basic thermal insulation capabilities, buffering vibrations and impacts during battery cell operation or runaway. A boron nitride fiber layer and expanded graphite are installed within the second silicone-modified polyurethane foam buffer insulation layer. Through the interaction of the boron nitride fiber and expanded graphite, in the event of thermal runaway, the expanded graphite burns to form char residue, which covers the boron nitride fiber and the second silicone-modified polyurethane foam buffer insulation layer. This not only greatly improves the flame-retardant and fire-resistant properties of the composite component but also enhances its shock absorption and thermal insulation capabilities, effectively improving the protection against thermal runaway of lithium battery cell modules and better ensuring the safety of new energy vehicle batteries and drivers. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the structure of the buffer insulation layer in Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the mica layer structure in Embodiment 1 of the present invention; Figure 4 This is a schematic diagram of the structure of the mica layer, the second fiberglass mesh, and the connecting part in Embodiment 1 of the present invention; Figure 5 This is a schematic diagram of the structure of the second glass fiber mesh and the connecting part in Embodiment 1 of the present invention; Figure 6 This is a schematic diagram of the overall structure of Embodiment 2 of the present invention.

[0024] In the diagram: 1. Mica layer; 11. First mica paper; 12. Second mica paper; 2. Buffer insulation layer; 21. First silicone-modified polyurethane foam buffer insulation layer; 22. Second silicone-modified polyurethane foam buffer insulation layer; 23. Mounting groove; 24. Boron nitride fiber layer; 25. Expanded graphite; 26. Spacer; 3. Adhesive layer; 4. Groove; 5. Protrusion; 6. First fiberglass mesh; 7. Second fiberglass mesh; 8. Connecting part. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without inventive effort are within the scope of protection of this invention.

[0026] Example 1 This invention provides, for example Figure 1-5 The invention relates to a high-buffering and heat-insulating mica composite component for new energy vehicle batteries, comprising: a mica layer 1 with multiple sets of protrusions 5 at its bottom, and an adhesive layer 3 on the bottom of the mica layer 1 and on the multiple sets of protrusions 5; a buffer and heat-insulating layer 2 for buffering and heat insulation, located at the bottom of the mica layer 1, for improving thermal runaway protection of the lithium battery cell module, wherein the buffer and heat-insulating layer 2 has multiple sets of grooves 4 corresponding to the protrusions 5, the protrusions 5 are inserted into the grooves 4, and the buffer and heat-insulating layer 2 is fixed to the bottom of the mica layer 1 by the adhesive layer 3.

[0027] Through the above technical solution, mica layer 1 provides basic electrical insulation and high-temperature insulation; Through the cooperation of the adhesive layer 3, the groove 4 and the protrusion 5, the adhesive layer 3 not only covers the bottom of the mica layer 1, but also covers the surface of the protrusion 5. When the protrusion 5 is inserted into the groove 4, the adhesive layer 3 at the bottom of the mica layer 1 will contact the top of the buffer insulation layer 2, and the adhesive layer 3 on the surface of the protrusion 5 will contact the inner wall of the groove 4. This can increase the contact area between the mica layer 1 and the buffer insulation layer 2, improve the strong adhesion between the buffer insulation layer 2 and the mica layer 1, and the cooperation between the protrusion 5 and the groove 4 physically prevents horizontal misalignment and peeling between the mica layer 1 and the buffer insulation layer 2, thus enhancing the structural integrity of the part under vibration environment. The bump 5 is made of the same material as the mica layer 1.

[0028] In an optional embodiment: such as Figure 2 As shown, the buffer insulation layer 2 includes a first silicone-modified polyurethane foam buffer insulation layer 21, a second silicone-modified polyurethane foam buffer insulation layer 22, a boron nitride fiber layer 24, expanded graphite 25, and spacers 26. The second silicone-modified polyurethane foamed buffer insulation layer 22 is integrally formed at the bottom of the first silicone-modified polyurethane foamed buffer insulation layer 21. An installation groove 23 is provided in the second silicone-modified polyurethane foamed buffer insulation layer 22. Multiple sets of expanded graphite 25 and spacers 26 are provided. Multiple sets of spacers 26 are evenly arranged inside the installation groove 23. Placement channels are left between adjacent spacers 26. Multiple sets of expanded graphite 25 are correspondingly arranged inside multiple placement channels. The boron nitride fiber layer 24 is arranged inside the installation groove 23, and multiple sets of expanded graphite 25 and spacers 26 are in contact with the boron nitride fiber layer 24. Both the first silicone-modified polyurethane foamed buffer insulation layer 21 and the second silicone-modified polyurethane foamed buffer insulation layer 22 are made of silicone-modified polyurethane foam resin.

[0029] Through the above technical solution, by combining the first silicone-modified polyurethane foam buffer insulation layer 21 with the second silicone-modified polyurethane foam buffer insulation layer 22, the double silicone-modified polyurethane foam buffer insulation layers are stacked, which greatly improves the shock absorption and basic heat insulation capabilities of the composite component, and can buffer the vibration impact when the battery cell is working or running out of control. The boron fiber layer 24 has high thermal conductivity and good mechanical strength. When added to the second silicone-modified polyurethane foam buffer insulation layer 22, it can improve the thermal conductivity of the material without reducing the buffer performance, so that heat can be dissipated quickly, thereby achieving a better heat insulation effect. At the same time, it can also enhance the overall strength of the second silicone-modified polyurethane foam buffer insulation layer 22.

[0030] By combining the boron nitride fiber layer 24, expanded graphite 25, and spacer 26, the synergistic effect of the boron nitride fiber layer 24 and expanded graphite 25 forms a core protection system. The boron nitride fiber layer 24 exhibits excellent high-temperature resistance and thermal conductivity regulation performance. The carbon residue layer formed after the expanded graphite 25 burns can tightly cover the surface of the boron nitride fiber layer 24 and the second organosilicon-modified polyurethane foam buffer insulation layer 22, constructing a highly efficient flame-retardant barrier to block heat transfer and flame spread. The overall structure achieves synergistic optimization of flame-retardant, fireproof, shock-absorbing, and heat-insulating performance, significantly enhancing the thermal runaway protection effect of the lithium battery cell module, providing reliable protection for the safety of new energy vehicle batteries, and meeting the stringent requirements of manufacturers and consumers.

[0031] In an optional embodiment: such as Figure 2 As shown, the spacer 26 is integrally formed on the second silicone-modified polyurethane foam buffer insulation layer 22.

[0032] Through the above technical solution, the partition 26 is made of the same material as the first silicone-modified polyurethane foamed buffer insulation layer 21 and the second silicone-modified polyurethane foamed buffer insulation layer 22. The partition 26 serves to separate multiple groups of expanded graphite 25. It can separate multiple groups of expanded graphite 25. In the event of thermal runaway, the carbon residue formed by the combustion of expanded graphite can be sealed in the placement channel. After the graphite in each unit expands, it can more effectively seal its own channel, forming a continuous and dense overall flame-retardant barrier to prevent the flame and heat from breaking through from one point and spreading.

[0033] In an optional embodiment: such as Figures 1 to 4 As shown, the cross-section of the protrusion 5 is set to square, the groove 4 is adapted to the protrusion 5, the groove 4 is set to square groove, and the protrusion 5 is in contact with the inner wall of the groove 4.

[0034] Through the above technical solution, by cooperating with the groove 4 and the protrusion 5, after the protrusion 5 is fixed inside the buffer insulation layer 2 by the adhesive layer 3, the protrusion 5 can penetrate into the buffer insulation layer 2, which can improve the connection effect between the mica layer 1 and the buffer insulation layer 2.

[0035] In an optional embodiment: such as Figure 2 and Figure 3 As shown, the mica layer 1 further includes a first mica paper 11 and a second mica paper 12; The first mica paper 11 is fixedly connected above the second mica paper 12. A second fiberglass mesh 7 is provided between the first mica paper 11 and the second mica paper 12. The second fiberglass mesh 7 is hot-pressed and laminated between the first mica paper 11 and the second mica paper 12.

[0036] Through the above technical solution, the setting of the second fiberglass mesh 7 can effectively improve the overall mechanical strength, tear resistance and wear resistance.

[0037] In an optional embodiment: such as Figure 4 and Figure 5 As shown, it also includes multiple sets of connecting parts 8, all of which are fixedly connected to the second fiberglass mesh 7. The connecting parts 8 are arranged correspondingly to the protrusions 5, and the connecting parts 8 are located inside the protrusions 5.

[0038] Through the above technical solution, by setting the connecting part 8 inside the protrusion 5, the strength of the protrusion 5 installed at the bottom of the second mica paper 12 can be increased, and the tear resistance of the protrusion 5 can be improved.

[0039] In an optional embodiment: such as Figure 1 , Figure 2 and Figure 3 As shown, the top of the first mica paper 11 is hot-pressed with a first fiberglass mesh 6.

[0040] Through the above technical solution, the first fiberglass mesh 6, the second fiberglass mesh 7 and the connecting part 8 are all treated with silicone-modified polyurethane resin to form a silicone-modified polyurethane adhesive layer, which ensures that the whole has good flame retardant and fireproof performance, buffering and heat insulation performance, tear resistance performance and mechanical properties. The silicone-modified polyurethane foaming resin is a commercially available silicone-modified polyurethane foaming resin. Its formulation is based on existing technology (the formulation is as follows: 1.05 mol MDI (262.78 g), 0.2 mol IPDI (44.46 g), 0.08 mol of anhydride-modified polyester polyol with a molecular weight of 2000 (160 g), 0.08 mol of polytetrahydrofuran diol with a molecular weight of 3000 (240 g), 0.06 mol of polycarbonate diol with a molecular weight of 2000 (120 g PCDL1012 Polycarbonate). The following substances were purchased from Shenzhen Jipeng Silicon Fluorine Materials Co., Ltd.: diol (polycarbonate diol, molecular weight 2000), 0.2 mol of 1,4-butenediol (35.25 g), 0.40 mol of 1,4-butanediol (36.05 g), 0.4 mol of 1,6-hexanediol (47.27 g), and 0.06 mol of dihydroxyvinyl silicone oil (hydroxyl-terminated methyl vinyl silicone oil, hydroxyl content: 6.0 ± 0.5%, vinyl content: 6.5 ± 0.5 mol). The following ingredients were added: 60g DMF, 2.4g triethanolamine, 4.8g glycerol, 0.24g bismuth caprylate, 0.08g amine catalyst A-33, 2.4g antioxidant 1010, 0.4g antioxidant 168, 18g deionized water, 6g HFC-245fa, 3.2g silicone surfactant B4113, 12g 2000-mesh aluminum hydroxide, 4g nano magnesium oxide, 4g nano silica powder, and 4g titanium nitride whiskers. (The remaining ingredients are:) organosilicon-modified polyurethane foam resin. The preparation method of the resin is also disclosed in the prior art (such as application number 202323050186.5, which discloses a high buffer and heat insulation mica composite component for new energy vehicle batteries). It is something that a person skilled in the art can prepare according to the formula and preparation method. In this application document, this part is not the innovation of the present invention. Moreover, this application document is mainly used to protect the structure and shape and their combination. Therefore, this application document will not explain the preparation method of organosilicon modified polyurethane foam resin in detail.

[0041] Example 2 Please see Figure 6 The present invention provides a technical solution: Unlike Embodiment 1, the cross-section of the protrusion 5 is set to be conical, and the groove 4 is adapted to the protrusion 5, and the groove 4 is set to be conical.

[0042] By using the above technical solution, by setting the cross section of the protrusion 5 to be conical and the groove 4 to be conical, it is easy to align the protrusion 5 with the groove 4 when the mica layer 1 is installed on the buffer insulation layer 2, and it is also easy to align and insert the protrusion 5 into the groove 4 during production assembly, thereby improving production efficiency.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-buffering, heat-insulating mica composite part for a new energy vehicle battery, characterized in that, Include: Mica layer (1), the bottom is provided with a plurality of groups of convex blocks (5), the bottom of the mica layer (1) and a plurality of groups of convex blocks (5) are provided with tacky glue layer (3); The buffer and heat insulation layer (2) is arranged on the bottom of the mica layer (1), and is used for improving the thermal runaway protection of the lithium battery cell module, a plurality of groups of grooves (4) corresponding to the convex blocks (5) are arranged on the buffer and heat insulation layer (2), the convex blocks (5) are inserted into the grooves (4), and the buffer and heat insulation layer (2) is fixed on the bottom of the mica layer (1) through the tacky glue layer (3).

2. A high cushioning, heat-insulating mica composite part for a new energy vehicle battery according to claim 1, characterized in that: The buffer and heat insulation layer (2) includes a first organic silicon modified polyurethane foaming buffer and heat insulation layer (21), a second organic silicon modified polyurethane foaming buffer and heat insulation layer (22), a boron nitride fiber layer (24), expanded graphite (25) and a partition block (26). The second organic silicon modified polyurethane foaming buffer and heat insulation layer (22) is integrally formed on the bottom of the first organic silicon modified polyurethane foaming buffer and heat insulation layer (21), the second organic silicon modified polyurethane foaming buffer and heat insulation layer (22) is provided with a mounting groove (23), the expanded graphite (25) and the partition block (26) are provided with a plurality of groups, the plurality of groups of partition blocks (26) are evenly arranged in the mounting groove (23), the adjacent partition blocks (26) are provided with a placing channel, the plurality of groups of expanded graphite (25) are arranged in the plurality of placing channels, the boron nitride fiber layer (24) is arranged in the mounting groove (23), and the plurality of groups of expanded graphite (25) and partition blocks (26) are in contact with the boron nitride fiber layer (24).

3. The high cushioning and heat insulating mica composite part for a new energy vehicle battery according to claim 2, characterized in that: The partition block (26) is integrally formed on the second organic silicon modified polyurethane foaming buffer and heat insulation layer (22).

4. The high cushioning and heat insulating mica composite part for a new energy vehicle battery according to claim 1, characterized in that: The cross section of the convex block (5) is square, and the groove (4) is matched with the convex block (5).

5. The high cushioning and heat insulating mica composite part for a new energy vehicle battery according to claim 1, characterized in that: The groove (4) is a square groove, and the convex block (5) is in contact with the inner wall of the groove (4).

6. The high cushioning and heat insulating mica composite part for a new energy vehicle battery according to claim 1, characterized in that: The mica layer (1) further includes a first mica paper (11) and a second mica paper (12). The first mica paper (11) is fixedly connected above the second mica paper (12), and the second glass fiber mesh cloth (7) is arranged between the first mica paper (11) and the second mica paper (12).

7. The high cushioning and heat insulating mica composite part for a new energy vehicle battery according to claim 6, characterized in that: Further comprising a plurality of connecting parts (8), and the plurality of connecting parts (8) are fixedly connected on the second glass fiber mesh cloth (7), the connecting part (8) is correspondingly arranged with the convex block (5), and the connecting part (8) is arranged in the convex block (5).

8. The high cushioning and heat insulating mica composite part for a new energy vehicle battery according to claim 6, characterized in that: The top of the first mica paper (11) is hot-pressed and combined with the first glass fiber mesh cloth (6).

9. The high cushioning and heat insulating mica composite part for a new energy vehicle battery according to claim 2, characterized in that: The first organic silicon modified polyurethane foaming buffer and heat insulation layer (21) and the second organic silicon modified polyurethane foaming buffer and heat insulation layer (22) are integrally formed by the organic silicon modified polyurethane foaming resin.

10. A high cushioning, heat-insulating mica composite part for a new energy vehicle battery according to claim 1, characterized in that: The cross section of the convex block (5) is tapered, the groove (4) is matched with the convex block (5), and the groove (4) is tapered.

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