New energy battery sealing ring double-sided tape

Abstract

The utility model relates to the field of adhesive tapes, and discloses a new energy battery sealing ring double-sided adhesive tape which comprises a rolling shaft, a tape body is wound on the surface of the rolling shaft, and the tape body comprises an isolating layer, an outer side adhesive layer, a surface treatment layer, a self-repairing layer, a reinforcing layer and an inner side adhesive layer which are sequentially stacked from top to bottom. The upper surface of the enhancement layer is connected with the self-repairing layer, and the upper surface of the self-repairing layer is connected with the surface treatment layer. According to the utility model, the flexibility and elasticity of the corrugated strips enable the corrugated strips to perfectly adapt to the thermal expansion and contraction of the battery assembly in the charging and discharging process on the premise of not reducing the strength, and the grid strips provide good strength and stability in two directions; according to the composite structure, a plurality of performance indexes such as strength, flexibility, tear resistance and fatigue resistance of the reinforcing layer reach higher levels, and strict requirements of new energy batteries on the performance of the adhesive tape are met.

Description

Technical Field

[0001] This utility model relates to the field of adhesive tape, and in particular to a double-sided adhesive tape for sealing rings of new energy batteries. Background Technology

[0002] In the field of new energy batteries, double-sided adhesive tape for sealing rings is a key component connecting the battery sealing ring and the battery casing, playing a vital role in the safety, stability and lifespan of the battery.

[0003] With the rapid development of industries such as new energy vehicles and energy storage equipment, the requirements for the performance and reliability of new energy batteries are becoming increasingly stringent. A high-quality double-sided sealing tape can ensure a tight connection between the battery sealing ring and the outer casing, preventing electrolyte leakage and the intrusion of external impurities, while effectively blocking the risk of battery leakage and ensuring the normal operation of the battery.

[0004] Currently, existing double-sided adhesive tapes for sealing rings of new energy batteries have some shortcomings: some double-sided adhesive tapes have unreasonable structural designs, cannot effectively resist external forces from different directions, and are prone to tearing or damage, affecting the safety and reliability of the battery. Therefore, a new type of double-sided adhesive tape for sealing rings of new energy batteries is proposed to solve the above problems. Summary of the Invention

[0005] To overcome the above shortcomings, this utility model provides a double-sided adhesive tape for sealing rings of new energy batteries, which aims to improve the problem that the existing technology cannot effectively resist external forces from different directions, and is prone to tearing or damage, affecting the safety and reliability of the battery.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a double-sided adhesive tape for sealing rings of new energy batteries, comprising a take-up shaft, wherein a tape body is wound around the surface of the take-up shaft;

[0007] The tape body comprises, from top to bottom, a release layer, an outer adhesive layer, a surface treatment layer, a self-healing layer, a reinforcement layer, and an inner adhesive layer. The upper surface of the reinforcement layer is connected to the self-healing layer, the upper surface of the self-healing layer is connected to the surface treatment layer, the upper surface of the surface treatment layer is connected to the outer adhesive layer, the upper surface of the outer adhesive layer is connected to the release layer, and the upper surface of the inner adhesive layer is connected to the reinforcement layer. The reinforcement layer also includes a corrugated strip, and the upper and lower surfaces of the corrugated strip are connected with mesh strips.

[0008] As a further description of the above technical solution:

[0009] The surface treatment layer is provided in two sets, and the self-healing layer is provided in two sets. The two sets of self-healing layers are distributed at the upper and lower ends of the reinforcing layer with the reinforcing layer as the center, and the two sets of surface treatment layers are distributed at the upper and lower ends of the self-healing layer with the self-healing layer as the center.

[0010] As a further description of the above technical solution:

[0011] The release layer is double-sided release paper.

[0012] As a further description of the above technical solution:

[0013] The self-healing layer contains microcapsules, and the microcapsules store cyanoacrylate.

[0014] As a further description of the above technical solution:

[0015] The inner and outer adhesive layers are silicone-modified acrylates.

[0016] As a further description of the above technical solution:

[0017] The outer adhesive layer also contains insulating microspheres, which are silicon dioxide particles.

[0018] This utility model has the following beneficial effects:

[0019] 1. In this utility model, the flexibility and elasticity of the corrugated strip enable it to perfectly adapt to the thermal expansion and contraction of the battery module during charging and discharging without reducing its strength. The grid strip provides good strength and stability in two directions. This composite structure enables the reinforcing layer to achieve a high level in multiple performance indicators such as strength, flexibility, tear resistance and fatigue resistance, thus meeting the strict requirements of new energy batteries for tape performance.

[0020] 2. In this utility model, by using the synergistic effect of the self-healing layer and the isolation layer, the tape can effectively resist the erosion of ultraviolet rays, oxygen, water vapor and microorganisms under various environmental conditions, maintain stable performance, extend the service life of the tape, and provide a reliable guarantee for the safe and stable operation of new energy batteries. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a double-sided adhesive tape for a new energy battery sealing ring proposed in this utility model;

[0022] Figure 2 This is a cross-sectional schematic diagram of a single-layer structure of a double-sided adhesive tape for sealing rings of new energy batteries proposed in this utility model.

[0023] Figure 3 This is a cross-sectional view of the reinforcing layer of a double-sided adhesive tape for a new energy battery sealing ring proposed in this utility model.

[0024] Figure 4 This is a cross-sectional schematic diagram of the double-layer structure of a new energy battery sealing ring double-sided adhesive tape proposed in this utility model.

[0025] Legend:

[0026] 1. Belt body; 11. Reinforcing layer; 111. Corrugated strip; 112. Mesh strip; 12. Inner adhesive layer; 13. Outer adhesive layer; 14. Self-healing layer; 15. Surface treatment layer; 16. Separating layer; 2. Rewinding shaft. Detailed Implementation

[0027] 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.

[0028] Reference Figure 1 - Figure 3 The present invention provides an embodiment of a new energy battery sealing ring double-sided adhesive tape, including a take-up shaft 2. The take-up shaft 2 is a prior art technology. By wrapping the tape body 1 around the surface of the take-up shaft 2, it can be extended and unfolded when used. The surface of the take-up shaft 2 is wrapped with the tape body 1.

[0029] Reference Figure 2 The tape body 1 comprises, from top to bottom, a separator layer 16, an outer adhesive layer 13, a surface treatment layer 15, a self-healing layer 14, a reinforcing layer 11, and an inner adhesive layer 12. The inner adhesive layer 12 contacts the sealing ring, and the outer adhesive layer 13 contacts the battery casing. Both the inner and outer adhesive layers 12 are made of silicone-modified acrylate. Silicone-modified acrylate has high surface energy and affinity, enabling it to bond tightly with various rubber and plastic sealing ring materials, ensuring a strong connection between the sealing ring and the tape. The material used for the outer adhesive layer 13 is similar to that of the inner adhesive layer. The side adhesive layer 12 is the same, and insulating microspheres and other materials are added on the basis of the inner adhesive layer 12 to achieve the insulation function, ensuring a firm bond with the battery shell while effectively blocking the risk of battery leakage. The insulating microspheres are made of silica particles, which have excellent insulation properties and low dielectric constant, effectively preventing current from passing through. During battery use, the tape can provide a reliable insulation barrier while bonding the battery shell, preventing battery leakage. The outer adhesive layer 13 also has insulating microspheres, which are silica particles.

[0030] Reference Figure 2The upper surface of the reinforcing layer 11 is connected to the self-healing layer 14. The self-healing layer 14 contains microcapsules containing cyanoacrylate. The microcapsules of the self-healing layer 14 contain a repair agent. When the tape is subjected to external force and develops microcracks, the repair agent can be released in time to repair the tape. The cyanoacrylate repair agent can cure in a very short time. The upper surface of the self-healing layer 14 is connected to the surface treatment layer 15. The surface treatment layer 15 is a UV absorber, antioxidant, and mildew inhibitor. The use of the surface treatment layer 15 can resist the erosion of ultraviolet rays, oxygen, water vapor, and microorganisms, so that the tape can maintain stable performance under various environmental conditions. The upper surface of the surface treatment layer 15 is connected to the outer adhesive layer 13. The upper surface of the outer adhesive layer 13 is connected to the release layer 16. The release layer 16 is a double-sided release paper. By setting the release layer 16, the adhesive layer can be exposed for pasting when it is peeled off. The upper surface of the inner adhesive layer 12 is connected to the reinforcing layer 11.

[0031] Reference Figure 2 and Figure 3 The reinforcing layer 11 also includes corrugated strips 111. By incorporating corrugated strips 111, it possesses excellent flexibility and elasticity, enabling it to better adapt to the thermal expansion and contraction of the battery assembly during charging and discharging without reducing strength. When the entire assembly is subjected to tension or compression, the corrugated strips 111 can absorb and buffer external forces through their own deformation, reducing damage to the overall structure of the tape. Both the upper and lower surfaces of the corrugated strips 111 are connected to mesh strips 112. By incorporating mesh strips 112, good strength and stability can be provided in both directions, effectively resisting tensile and shear forces from different directions. When the tape is subjected to external forces, the mesh strips 112 can evenly distribute the force in all directions, avoiding local stress concentration, thereby improving the overall tear resistance and load-bearing capacity of the tape. Furthermore, through the composite structure of mesh strips 112 and corrugated strips 111, the reinforcing layer 11 can achieve good levels in multiple performance indicators such as strength, flexibility, tear resistance, and fatigue resistance, meeting the stringent requirements of new energy batteries for tape performance under different usage environments and operating conditions.

[0032] Working principle: The self-healing layer 14 uses microcapsule material, with a repair agent stored inside. When the tape is subjected to external force and develops a tiny crack, the microcapsule at the crack ruptures, releasing the repair agent to fill the crack. The chemical components in the repair agent react with the tape material, causing the molecules at the crack to reconnect, thereby repairing the crack. This self-healing function can promptly repair minor damage to the tape, prevent further damage, and maintain the integrity and performance stability of the tape. The surface treatment layer 15 mainly consists of ultraviolet absorbers, antioxidants, and antifungal agents. The surface treatment layer 15 consists of several components. The UV absorber absorbs ultraviolet light and converts it into other forms of energy (such as heat), thus preventing UV damage to the tape material and avoiding aging and degradation due to UV irradiation. The antioxidant reacts with oxygen, consuming oxygen in the environment and preventing the tape material from being oxidized, maintaining the tape's chemical stability. The antifungal agent inhibits the growth and reproduction of microorganisms, preventing the tape from becoming moldy and deteriorating due to microbial erosion. Through the synergistic effect of these components, the surface treatment layer 15 ensures the tape maintains stable performance under various environmental conditions, extending the tape's service life.

[0033] The composite structure of corrugated strips 111 and mesh strips 112 enables the reinforcing layer 11 to achieve good performance in multiple indicators. The flexibility and elasticity of the corrugated strips 111 combined with the strength and stability of the mesh strips 112 allows the tape to adapt to the thermal expansion and contraction of the battery module and withstand external forces from different directions, improving the tape's fatigue resistance and service life. This meets the stringent performance requirements of new energy batteries for tapes under different operating environments and conditions. Example

[0034] Reference Figure 4 The surface treatment layer 15 is provided in two sets, and the self-healing layer 14 is provided in two sets. The two sets of self-healing layers 14 are distributed at the upper and lower ends of the reinforcing layer 11 as the center, and the two sets of surface treatment layers 15 are distributed at the upper and lower ends of the self-healing layer 14 as the center. Since the reinforcing layer 11 is located between the two sets of surface treatment layers 15 and self-healing layers 14, it can uniformly resist the tensile and shear forces from both sides. The lower self-healing layer 14 and surface treatment layer 15 are the same as those in Embodiment 1. In the winding state, the inner adhesive layer 12 will contact the outside of the upper isolation layer 16 through the isolation layer 16, thereby achieving the effect of isolating the adhesive layer.

[0035] Working principle: When in use, the tape 1 can be pulled out from the surface of the take-up shaft 2. At this time, the inner adhesive layer 12 will separate from the surface of the isolation layer 16 on the outer adhesive layer 13, so that the tape 1 can be pulled outward from the surface of the take-up shaft 2 and the isolation layer 16 can be torn off, so that the outer adhesive layer 13 can contact and stick to the battery shell, and the inner adhesive layer 12 can contact and stick to the sealing ring. In daily use, the two sets of self-healing layers 14 and surface treatment layers 15 can evenly repair the cracks on the upper and lower sides and the damage from regional moisture and ultraviolet rays.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A new energy battery sealing ring double-sided tape, comprising a winding shaft (2), characterized in that: The surface of the winding shaft (2) is provided with a belt (1); The belt (1) comprises, from top to bottom, an isolation layer (16), an outer adhesive layer (13), a surface treatment layer (15), a self-repairing layer (14), a reinforcing layer (11) and an inner adhesive layer (12), the upper surface of the reinforcing layer (11) is connected with the self-repairing layer (14), the upper surface of the self-repairing layer (14) is connected with the surface treatment layer (15), the upper surface of the surface treatment layer (15) is connected with the outer adhesive layer (13), the upper surface of the outer adhesive layer (13) is connected with the isolation layer (16), the upper surface of the inner adhesive layer (12) is connected with the reinforcing layer (11), and the reinforcing layer (11) further comprises a corrugated strip (111), and the upper and lower surfaces of the corrugated strip (111) are connected with grid strips (112).

2. The double-sided adhesive tape for sealing rings of new energy batteries according to claim 1, characterized in that: The surface treatment layer (15) is provided with two groups, and the self-repairing layer (14) is provided with two groups, the two groups of self-repairing layers (14) are distributed at the upper and lower ends of the reinforcing layer (11) as the center, and the two groups of surface treatment layers (15) are distributed at the upper and lower ends of the self-repairing layer (14) as the center.

3. The double-sided adhesive tape for sealing rings of new energy batteries according to claim 1, characterized in that: The isolation layer (16) is double-sided release paper.

4. The double-sided adhesive tape for sealing rings of new energy batteries according to claim 1, characterized in that: The self-repairing layer (14) contains microcapsules, and the microcapsules store cyano acrylate.

5. The double-sided adhesive tape for sealing rings of new energy batteries according to claim 1, characterized in that: The inner adhesive layer (12) and the outer adhesive layer (13) are organic silicon modified acrylates.

6. The double-sided tape of claim 1, wherein the double-sided tape is used for sealing a new energy battery. The outer adhesive layer (13) further adds insulating microspheres, and the insulating microspheres are silica particles.

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