Flame-retardant wear-resistant adhesive tape for protecting new energy battery pack

Abstract

The utility model provides a flame-retardant wear-resistant adhesive tape for protecting a new energy battery pack, which comprises an adhesive tape flame-retardant layer arranged in the middle, flame-retardant soft porcelain layers are arranged on the two sides of the adhesive tape flame-retardant layer, and adhesive tape base material layers are arranged on the outer sides of the upper flame-retardant soft porcelain layer and the lower flame-retardant soft porcelain layer; according to the adhesive tape, polyimide or aramid fiber with excellent wear resistance and high temperature resistance is compounded with a flame-retardant layer which is added with a phosphorus-based flame retardant or a nitrogen-based flame retardant and has excellent flame-retardant performance, then flame-retardant soft porcelain and shielding aluminum foil are compounded and added into the flame-retardant layer, and self-adhesion of the adhesive tape is realized by adopting high-temperature-resistant acrylic resin glue; the adhesive tape can form a stable carbonized layer in a high-temperature or open fire environment, flame spreading is prevented, the safety of a battery pack is improved, mechanical friction and impact of the battery pack in the transportation and use process can be borne, the self-adhesion design simplifies the construction process, the application efficiency is improved, the construction cost is reduced, and the service life of the battery pack is prolonged. And the battery pack can bear a high-temperature environment in a working process and keeps stable performance.

Description

Technical Field

[0001] This utility model relates to the field of adhesive tape technology, specifically to a flame-retardant and wear-resistant adhesive tape for the protection of new energy battery packs. Background Technology

[0002] Lithium-ion battery tape is a type of tape specifically designed for the manufacture and maintenance of lithium-ion batteries. It possesses multiple functions, including insulation, fixation, protection, and sealing. This tape must be able to withstand the thermal expansion and mechanical stress generated during the charging and discharging process of lithium-ion batteries, while also exhibiting high-temperature resistance, electrolyte corrosion resistance, good adhesive strength, and a certain degree of mechanical strength. Lithium-ion battery tape plays a crucial role in the safety and performance of batteries, especially in electric vehicles and portable electronic devices.

[0003] In recent years, with the continuous development of lithium battery technology, the requirements for lithium battery tapes have become increasingly stringent. Especially in terms of preventing sticking to the cutting tool and high-temperature resistance, traditional tapes can no longer meet the demands of modern lithium battery manufacturing. Therefore, anti-sticking, high-temperature resistant lithium battery tapes have emerged. These tapes not only effectively prevent sticking during cutting and coating processes but also maintain stable performance under high-temperature conditions. Currently, some anti-sticking, high-temperature resistant lithium battery tapes are available on the market. They typically use polyimide film, polyamide film, or composite film as the substrate and silicone or acrylic adhesive as the bonding agent. The performance of these tapes can adapt to the thermal expansion and mechanical stress of lithium batteries during charging and discharging, thus improving the efficiency and safety of lithium battery manufacturing to a certain extent.

[0004] However, despite some progress in existing high-temperature resistant anti-sticking tapes for lithium batteries, several problems remain. First, some tapes exhibit insufficient performance stability at high temperatures, easily deforming or losing adhesion, thus affecting the manufacturing quality and safety of lithium batteries. Second, some tapes perform poorly in terms of anti-sticking properties, especially during prolonged use or under high temperatures, still exhibiting sticking to the cutting tool, leading to decreased tape cutting quality. Furthermore, some tapes also lack sufficient mechanical strength and adhesion, unable to withstand the various stresses and impacts encountered during lithium battery manufacturing. These problems limit the application and promotion of existing high-temperature resistant anti-sticking tapes for lithium batteries in the lithium battery manufacturing field. Therefore, there is an urgent need to develop a new high-temperature resistant anti-sticking tape for lithium batteries that addresses the issues of insufficient thermal stability, poor anti-sticking effect, and inadequate mechanical strength and adhesion in existing technologies. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by providing a flame-retardant and wear-resistant tape for protecting new energy battery packs. The tape is a composite of polyimide or aramid fiber with excellent wear resistance and high-temperature resistance, and a flame-retardant layer with excellent flame-retardant properties, incorporating phosphorus-based or nitrogen-based flame retardants. Flame-retardant soft ceramic and shielding aluminum foil are then added. High-temperature resistant acrylic resin adhesive achieves self-adhesion, allowing the tape to form a stable carbonized layer under high-temperature or open-flame conditions, preventing flame spread and improving battery pack safety. It can withstand mechanical friction and impact during transportation and use. The self-adhesive design simplifies the construction process, improves application efficiency, and reduces construction costs. The selection of high-temperature resistant materials and adhesives ensures the tape maintains stable performance under high-temperature conditions during battery pack operation.

[0006] To achieve the objective of this utility model, the technical solution adopted is as follows:

[0007] A flame-retardant and wear-resistant tape for protecting new energy battery packs includes a flame-retardant layer disposed in the middle, flame-retardant soft ceramic layers disposed on both sides of the flame-retardant layer, and a tape substrate layer disposed on the outer side of the upper and lower flame-retardant soft ceramic layers; a shielding aluminum foil layer disposed on the outer side of the upper and lower tape substrate layers, a printing and writing layer disposed on the outer side of the lower shielding aluminum foil layer, a self-adhesive layer disposed on the outer side of the upper shielding aluminum foil layer, and a release paper layer disposed on the outer side of the self-adhesive layer.

[0008] As a preferred technical solution, the thickness of the flame-retardant layer of the tape is 0.05 mm, and the thickness of the flame-retardant layer of the tape is greater than or equal to the thickness of the flame-retardant soft ceramic layer.

[0009] As a preferred technical solution, the thickness of the tape substrate layer is 0.1 mm, and the thickness of the tape substrate layer is greater than or equal to the sum of the thicknesses of the tape flame retardant layer and the tape self-adhesive layer.

[0010] As a preferred technical solution, the thickness of the self-adhesive layer of the tape is 0.04 mm, and the thickness of the self-adhesive layer of the tape is less than or equal to that of the release paper layer of the tape.

[0011] As a preferred technical solution, the thickness of the self-adhesive layer of the tape is greater than or equal to the thickness of the flame-retardant soft ceramic layer, and the thickness of the self-adhesive layer of the tape is greater than or equal to the thickness of the shielding aluminum foil layer.

[0012] As a preferred technical solution, the thickness of the tape substrate layer is greater than or equal to the sum of the thicknesses of the flame-retardant soft ceramic layer, the shielding aluminum foil layer, and the self-adhesive layer of the tape.

[0013] As a preferred technical solution, the thickness of the printed writing layer is less than or equal to the thickness of the tape substrate layer, and the thickness of the printed writing layer is greater than or equal to the thickness of the tape flame retardant layer.

[0014] As a preferred technical solution, the thickness of the flame-retardant soft ceramic layer is greater than or equal to the thickness of the shielding aluminum foil layer, the thickness of the flame-retardant soft ceramic layers on both sides of the flame-retardant tape layer is the same, and the thickness of the shielding aluminum foil layers on the outer sides of the two tape substrate layers is the same.

[0015] This utility model provides a flame-retardant and wear-resistant adhesive tape for protecting new energy battery packs, which has the following advantages:

[0016] This invention relates to a tape that combines polyimide or aramid fiber with excellent abrasion resistance and high-temperature resistance with a flame-retardant layer containing phosphorus-based or nitrogen-based flame retardants. Flame-retardant soft ceramic and shielding aluminum foil are then added. High-temperature resistant acrylic resin adhesive achieves the tape's self-adhesiveness, enabling it to form a stable carbonized layer under high-temperature or open-flame conditions, preventing flame spread and improving battery pack safety. The tape can withstand mechanical friction and impact during transportation and use. The self-adhesive design simplifies the construction process, improves application efficiency, and reduces construction costs. The selection of high-temperature resistant materials and adhesives allows the tape to withstand high-temperature environments and maintain stable performance during battery pack operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the internal structure of the flame-retardant and wear-resistant tape for protecting new energy battery packs according to this utility model.

[0018] In the diagram: 1. Flame-retardant layer of tape; 2. Tape substrate layer; 3. Flame-retardant flexible ceramic layer; 4. Shielding aluminum foil layer; 5. Self-adhesive layer of tape; 6. Release paper layer of tape; 7. Printing and writing layer. Detailed Implementation

[0019] The present invention will be further described and illustrated below with reference to specific embodiments and accompanying drawings.

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0021] In the description of this utility model, it should be understood that the terms "upper", "lower", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Example 1

[0022] like Figure 1 As shown, a flame-retardant and wear-resistant tape for protecting new energy battery packs includes a flame-retardant layer 1 disposed in the middle, flame-retardant soft ceramic layers 3 disposed on both sides of the flame-retardant layer 1, and a tape substrate layer 2 disposed on the outer side of the upper and lower flame-retardant soft ceramic layers 3; a shielding aluminum foil layer 4 disposed on the outer side of the upper and lower tape substrate layers 2, a printing and writing layer 7 disposed on the outer side of the lower shielding aluminum foil layer 4, a tape self-adhesive layer 5 disposed on the outer side of the upper shielding aluminum foil layer 4, and a tape release paper layer 6 disposed on the outer side of the tape self-adhesive layer 5.

[0023] Furthermore, the thickness of the flame-retardant layer 1 of the tape is 0.05 mm, and the thickness of the flame-retardant layer 1 of the tape is greater than or equal to the thickness of the flame-retardant soft ceramic layer 3.

[0024] Furthermore, the thickness of the tape substrate layer 2 is 0.1 mm, and the thickness of the tape substrate layer 2 is greater than or equal to the sum of the thicknesses of the tape flame retardant layer 1 and the tape self-adhesive layer 5.

[0025] Furthermore, the thickness of the self-adhesive layer 5 of the tape is 0.04 mm, and the thickness of the self-adhesive layer 5 of the tape is less than or equal to that of the release paper layer 6 of the tape.

[0026] Furthermore, the thickness of the self-adhesive layer 5 of the tape is greater than or equal to the thickness of the flame-retardant soft ceramic layer 3, and the thickness of the self-adhesive layer 5 of the tape is greater than or equal to the thickness of the shielding aluminum foil layer 4.

[0027] Furthermore, the thickness of the tape substrate layer 2 is greater than or equal to the sum of the thicknesses of the flame-retardant soft ceramic layer 3, the shielding aluminum foil layer 4, and the tape self-adhesive layer 5.

[0028] Furthermore, the thickness of the printed writing layer 7 is less than or equal to the thickness of the tape substrate layer 2, and the thickness of the printed writing layer 7 is greater than or equal to the thickness of the tape flame retardant layer 1.

[0029] Furthermore, the thickness of the flame-retardant soft ceramic layer 3 is greater than or equal to the thickness of the shielding aluminum foil layer 4, the thickness of the flame-retardant soft ceramic layer 3 on both sides of the flame-retardant tape layer 1 is the same, and the thickness of the shielding aluminum foil layer 4 on the outer side of the two tape substrate layers 2 is the same.

[0030] First, the substrate layer and the flame retardant layer are laminated through a hot-pressing process. Then, a layer of high-temperature resistant acrylic resin adhesive is coated on the surface of the flame retardant layer to form a self-adhesive layer, which finally forms a flame retardant and wear-resistant tape for the protection of new energy battery packs. The tape is tested for flame retardant performance, wear resistance, adhesion and high temperature resistance. The tape can maintain stable performance in high temperature environment, and the self-adhesive layer can maintain good adhesion performance in high temperature environment.

[0031] The tape substrate layer 2 is made of polyimide or aramid fiber with a thickness of 0.1 mm. It has excellent wear resistance and high temperature resistance, and can withstand mechanical friction and impact during the transportation and use of the battery pack. The tape flame retardant layer 1 is made of phosphorus-based or nitrogen-based flame retardant with a thickness of 0.05 mm. It has excellent flame retardant properties and can form a stable carbonized layer in high temperature or open flame environments to prevent the spread of flames. The tape self-adhesive layer 5 is made of high temperature resistant acrylic resin adhesive with a thickness of 0.04 mm. It has good self-adhesive properties and high temperature resistant bonding properties. The flame retardant soft ceramic layer 3 can form a flame retardant ceramic to avoid high temperature damage to the internal structure of the tape. The shielding aluminum foil layer 4 is made of aluminum foil to effectively form a strong shielding effect. Example 2

[0032] The difference between this embodiment and Embodiment 1 is that:

[0033] like Figure 1 As shown, a flame-retardant and wear-resistant tape for the protection of new energy battery packs replaces the polyimide or aramid fiber of the tape substrate layer 2 with glass fiber aerogel, which also has excellent wear resistance and high temperature resistance. The flame-retardant layer 1 of the tape is replaced with ceramic fiber without phosphorus-based or nitrogen-based flame retardants, which effectively blocks temperature diffusion in high temperature or open flame environments. Example 3

[0034] The difference between this embodiment and embodiments 1 and 2 is that:

[0035] like Figure 1 As shown, a flame-retardant and wear-resistant tape for protecting new energy battery packs is provided. The two sides of the flame-retardant layer 1 of the tape are provided as tape substrate layers 2. The outer sides of the upper and lower tape substrate layers 2 are provided as shielding aluminum foil layers 4. The upper and lower shielding aluminum foil layers 4 are provided as flame-retardant soft ceramic layers 3, which effectively prevents high temperature or open flame from damaging the inner structure of the tape.

[0036] In this invention, the tape is composited with polyimide or aramid fiber, which has excellent wear resistance and high temperature resistance, and a flame-retardant layer with excellent flame-retardant properties, which contains phosphorus-based or nitrogen-based flame retardants. Flame-retardant soft ceramic and shielding aluminum foil are then added. High-temperature resistant acrylic resin adhesive is used to achieve the tape's self-adhesiveness, enabling the tape to form a stable carbonized layer in high-temperature or open-flame environments, preventing flame spread and improving the safety of the battery pack. It can withstand mechanical friction and impact during transportation and use. The self-adhesive design simplifies the construction process, improves application efficiency, and reduces construction costs. The selection of high-temperature resistant materials and adhesives allows the tape to withstand high-temperature environments during battery pack operation and maintain stable performance.

[0037] The technical solutions disclosed in the embodiments of this utility model have been described in detail above. Specific embodiments have been used to illustrate the principles and implementation methods of the embodiments of this utility model. The descriptions of the embodiments above are only for helping to understand the principles of the embodiments of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the embodiments of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A new energy battery pack protection fire-retardant wear-resistant adhesive tape, characterized in that: The tape flame-retardant layer (1) is arranged in the middle, and flame-retardant soft porcelain layers (3) are arranged on both sides of the tape flame-retardant layer (1); the outer sides of the upper and lower flame-retardant soft porcelain layers (3) are provided with tape base material layers (2); The outer sides of the upper and lower tape base material layers (2) are provided with shielding aluminum foil layers (4); the outer side of the lower shielding aluminum foil layer (4) is provided with a printing and writing layer (7); the outer side of the upper shielding aluminum foil layer (4) is provided with a tape self-adhesive layer (5); and the outer side of the tape self-adhesive layer (5) is provided with a tape release paper layer (6).

2. The new energy battery pack protection fire-retardant wear-resistant adhesive tape according to claim 1, characterized in that: The thickness of the tape flame-retardant layer (1) is 0.05 mm, and the thickness of the tape flame-retardant layer (1) is greater than or equal to the thickness of the flame-retardant soft porcelain layer (3).

3. The new energy battery pack protection fire-retardant wear-resistant adhesive tape according to claim 1, characterized in that: The thickness of the tape base material layer (2) is 0.1 mm, and the thickness of the tape base material layer (2) is greater than or equal to the sum of the thicknesses of the tape flame-retardant layer (1) and the tape self-adhesive layer (5).

4. The new energy battery pack protection fire-retardant wear-resistant adhesive tape according to claim 3, characterized in that: The thickness of the tape self-adhesive layer (5) is 0.04 mm, and the thickness of the tape self-adhesive layer (5) is less than or equal to the tape release paper layer (6).

5. The new energy battery pack protection fire-retardant wear-resistant adhesive tape according to claim 3, characterized in that: The thickness of the tape self-adhesive layer (5) is greater than or equal to the thickness of the flame-retardant soft porcelain layer (3), and the thickness of the tape self-adhesive layer (5) is greater than or equal to the thickness of the shielding aluminum foil layer (4).

6. The new energy battery pack protection fire-retardant wear-resistant adhesive tape according to claim 4, characterized in that: The thickness of the tape base material layer (2) is greater than or equal to the sum of the thicknesses of the flame-retardant soft porcelain layer (3), the shielding aluminum foil layer (4) and the tape self-adhesive layer (5).

7. The new energy battery pack protection fire-retardant wear-resistant adhesive tape according to claim 1, characterized in that: The thickness of the printing and writing layer (7) is less than or equal to the thickness of the tape base material layer (2), and the thickness of the printing and writing layer (7) is greater than or equal to the thickness of the tape flame-retardant layer (1).

8. The new energy battery pack protection fire-retardant wear-resistant adhesive tape according to claim 6, characterized in that: The thickness of the flame-retardant soft porcelain layer (3) is greater than or equal to the thickness of the shielding aluminum foil layer (4), the thicknesses of the flame-retardant soft porcelain layers (3) on both sides of the tape flame-retardant layer (1) are the same, and the thicknesses of the shielding aluminum foil layers (4) on the outer sides of the two tape base material layers (2) are the same.

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