High-strength weather-resistant insulation board pultruded sheet

By using epoxy vinyl ester resin substrate and glass fiber reinforcement structure in the battery separator, combined with protective coating and rib design, the problems of insufficient mechanical strength, weather resistance and flame retardancy of the battery separator are solved, thereby improving the stability and safety of the new energy vehicle battery system.

CN224675679UActive Publication Date: 2026-08-25DONGGUAN DONGSHI NEW MATERIAL DEV
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Patent Information

Application Number
CN202521737738.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-08-15
Publication Date
2026-08-25
Estimated Expiration
2035-08-15

AI Technical Summary

Technical Problem

Existing battery separator materials are insufficient in terms of mechanical strength, weather resistance, and flame retardancy, making it difficult to meet the requirements of new energy vehicles for high strength, high modulus, weather resistance, and flame retardancy, thus affecting the stability and safety of the battery system.

Method used

The substrate is made of epoxy vinyl ester resin, with glass fiber reinforcement structure arranged along the length of the interior and a protective coating or film structure on the exterior. Ribs are set on both sides to form a high-strength weather-resistant insulation pultruded board, which enhances structural stability and flame retardant performance.

Benefits of technology

It improves the mechanical strength, weather resistance and flame retardancy of the battery separator, ensuring stability and safety in complex environments, extending service life and reducing fire risk.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a kind of high-strength weather-resistant insulation board pultruded sheet, it is to be combined by first sheet and second sheet, one side of the first sheet is provided with rib one, the other side of the first sheet is provided with connecting groove one, one side of the second sheet is provided with rib two, the other side of the second sheet is provided with connecting protrusion, and the connecting protrusion and connecting groove one buckling connection connect.The pultruded sheet of the utility model is combined by two parts symmetrical sheet, and reinforcing structure is arranged in the length direction of substrate inside substrate, the outside of substrate is provided with protective coating or film structure, and the both sides of two sheets are provided with rib for reinforcing structure stability, so that the pultruded sheet is better in high-pressure resistant performance when using, and the weather resistance and flame-retardant effect of sheet material in the device are good, so that the overall effect of weather resistance, flame retardation and high-pressure resistance of the pultruded sheet is good, and practicality is strong.
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Description

Technical Field

[0001] This utility model relates to the field of battery separator technology for new energy vehicles, specifically a high-strength, weather-resistant, insulating pultruded sheet material. Background Technology

[0002] With the rapid development of the new energy vehicle industry, battery systems, as one of its core technologies, have placed higher demands on material performance. Battery separators, in particular, not only need excellent insulation properties to ensure safe battery operation, but also require high strength and high modulus to withstand mechanical stress under high pressure. Furthermore, in complex and changing external environments, such as high temperature, humidity, or ultraviolet radiation, battery separators must also exhibit excellent weather resistance and flame retardancy to extend service life and improve overall safety.

[0003] While existing battery separator materials and technologies meet some of the above requirements, they still have shortcomings. For example, some traditional materials may have good insulation properties but lack sufficient mechanical strength, making them prone to deformation or even breakage during long-term use; others, while providing high mechanical strength, have poor weather resistance and may age under harsh weather conditions, affecting the stability and reliability of the battery system. Furthermore, since batteries generate a large amount of heat during operation, if the battery separator lacks good flame-retardant properties, the risk of fire will be greatly increased, threatening the safety of the vehicle and its passengers. Therefore, this invention proposes a high-strength, weather-resistant, insulating pultruded sheet. Utility Model Content

[0004] Technical problems to be solved

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a high-strength, weather-resistant, insulating pultruded sheet material that provides high strength, high modulus support, and also has good weather resistance and flame retardancy.

[0006] Technical solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a high-strength weather-resistant insulating pultruded sheet, which is composed of a first sheet and a second sheet. A rib is provided on one side of the first sheet, and a connecting groove is provided on the other side of the first sheet. A rib is provided on one side of the second sheet, and a connecting protrusion is provided on the other side of the second sheet. The connecting protrusion and the connecting groove are fastened together.

[0008] Both the first and second plates are made of a substrate. Reinforcing structures are arranged inside the substrate along its length. A protective coating or film structure is provided on the outside of the substrate. The pultruded plate is composed of two symmetrically arranged plates. Reinforcing structures are arranged inside the substrate along its length. A protective coating or film structure is provided on the outside of the substrate. Ribs are provided on both sides of the two plates to enhance structural stability. This makes the pultruded plate have better high-pressure resistance when used. The plate material in this device has good weather resistance and flame retardancy. The overall effect of the pultruded plate in terms of weather resistance, flame retardancy and high pressure resistance is good, and it is highly practical.

[0009] Preferably, the substrate is made of epoxy vinyl ester resin.

[0010] Preferably, the reinforcing structure is made of glass fiber.

[0011] Preferably, the protective coating is any one of polyurethane coating, fluorocarbon coating or epoxy resin coating.

[0012] Preferably, the coating structure is any one of polyester film, polytetrafluoroethylene coating, or polyimide coating.

[0013] Preferably, the substrate is also doped with flame retardants and / or anti-aging agents.

[0014] Preferably, there are multiple ribs, and the multiple ribs are evenly distributed on both sides of the pultruded sheet.

[0015] Beneficial effects:

[0016] Compared with existing technologies, this high-strength weather-resistant insulation pultruded sheet has the following advantages:

[0017] The pultruded sheet of this utility model is composed of two symmetrically arranged sheets. The substrate has a reinforcing structure arranged along the length of the substrate, and the substrate has a protective coating or film structure on the outside. Both sides of the two sheets are provided with ribs to enhance the structural stability, which makes the pultruded sheet have better high pressure resistance when used. In addition, the sheet material in this device has good weather resistance and flame retardancy, so the pultruded sheet has good overall weather resistance, flame retardancy and high pressure resistance, and is highly practical. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the first plate of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the second plate of this utility model;

[0022] Figure 4 A schematic diagram of an embodiment of the present invention with a protective coating;

[0023] Figure 5 A schematic diagram of an embodiment of the present invention with a coating structure.

[0024] In the picture:

[0025] 1. First sheet material; 2. Second sheet material; 3. Rib 1; 4. Connecting groove 1; 5. Rib 2; 6. Connecting protrusion; 7. Substrate; 8. Reinforcing structure; 9. Protective coating; 10. Film-coated structure. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-5 As shown, this utility model provides a technical solution: a high-strength weather-resistant insulating pultruded sheet, which is composed of a first sheet 1 and a second sheet 2. A rib 3 is provided on one side of the first sheet 1 and a connecting groove 4 is provided on the other side of the first sheet 1. A rib 5 is provided on one side of the second sheet 2 and a connecting protrusion 6 is provided on the other side of the second sheet 2. The connecting protrusion 6 and the connecting groove 4 are fastened together.

[0028] The first plate 1 and the second plate 2 in this utility model both include a substrate 7 and a reinforcing structure 8. The reinforcing structure 8 is arranged along the length of the substrate 7 inside the substrate 7, and a protective coating 9 or a film structure 10 is provided on the outside of the substrate 7. The pultruded plate is composed of two symmetrically arranged plates. The reinforcing structure 8 is arranged along the length of the substrate 7 inside the substrate 7, and a protective coating 9 or a film structure 10 is provided on the outside of the substrate 7. Ribs for strengthening structural stability are provided on both sides of the two plates, which makes the pultruded plate have better high pressure resistance when used. In addition, the material of the plate 1 in this device has good weather resistance and flame retardancy, which makes the overall effect of weather resistance, flame retardancy and high pressure resistance of the pultruded plate good and highly practical.

[0029] Please refer to the following carefully. Figure 4 and Figure 5 The substrate 7 is made of epoxy vinyl ester resin and is also doped with flame retardants and / or anti-aging agents. The reinforcing structure 8 is made of glass fiber. The protective coating 9 is any one of polyurethane coating, fluorocarbon coating or epoxy resin coating. The film structure 10 is any one of polyester film, polytetrafluoroethylene film or polyimide film.

[0030] Please refer to the following carefully. Figure 2 and Figure 3 Both rib 1 (3) and rib 2 (5) are multiple, and these multiple ribs 1 (3) and rib 2 (5) are evenly distributed on both sides of the pultruded sheet.

[0031] Working principle: The pultruded sheet is composed of two symmetrically arranged sheets. The substrate 7 has a reinforcing structure 8 arranged along the length of the substrate 7 inside. The substrate 7 is provided with a protective coating 9 or a film structure 10 on the outside. Ribs are provided on both sides of the two sheets to enhance the structural stability, which makes the pultruded sheet have better high pressure resistance when used. The sheet material in this device has good weather resistance and flame retardancy.

[0032] In summary, this invention overcomes the limitations of traditional battery separators by combining a specific structural design with high-performance materials, providing a safer and more reliable option for the new energy vehicle industry. Specifically, the invention uses a substrate made of epoxy vinyl ester resin, with glass fiber reinforcement arranged along its length inside and a protective coating or film structure on the outside, thereby effectively improving the overall performance of the material, including but not limited to compressive strength, weather resistance, and flame retardancy. Furthermore, to further enhance structural stability, ribs are added to both sides of the sheet, resulting in superior overall performance of the pultruded sheet in practical applications.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-strength, weather-resistant, pultruded insulating sheet, composed of a first sheet (1) and a second sheet (2), characterized in that: The first plate (1) has a rib (3) on one side and a connecting groove (4) on the other side. The second plate (2) has a rib (5) on one side and a connecting protrusion (6) on the other side. The connecting protrusion (6) and the connecting groove (4) are fastened together. The first plate (1) and the second plate (2) both include a substrate (7) and a reinforcing structure (8). The reinforcing structure (8) is arranged inside the substrate (7) along the length direction of the substrate (7). The substrate (7) is provided with a protective coating (9) or a film structure (10) on the outside.

2. The high-strength weather-resistant pultruded insulating sheet according to claim 1, characterized in that: The substrate (7) is made of epoxy vinyl ester resin.

3. The high-strength weather-resistant pultruded insulating sheet according to claim 1, characterized in that: The reinforcing structure (8) is made of glass fiber.

4. The high-strength weather-resistant insulating pultruded sheet according to claim 1, characterized in that: The protective coating (9) is any one of polyurethane coating, fluorocarbon coating or epoxy resin coating.

5. The high-strength weather-resistant pultruded insulating sheet according to claim 1, characterized in that: The coating structure (10) is made of any one of polyester film, polytetrafluoroethylene coating or polyimide coating.

6. The high-strength weather-resistant pultruded insulating sheet according to claim 1, characterized in that: The substrate (7) is also doped with flame retardants and / or anti-aging agents.

7. The high-strength weather-resistant pultruded insulating sheet according to claim 1, characterized in that: Both the first rib (3) and the second rib (5) are multiple, and the multiple first ribs (3) and second ribs (5) are evenly distributed on both sides of the pultruded sheet.