Spacing adhesive tape for lithium battery
By adopting a multi-layer structural design in the lithium battery space tape, including thermal conductivity layer, silicone particles, fill layer, heat-resistant layer and reinforcement layer, the poor heat dissipation effect and tape softening problems of the lithium battery space tape in high temperature environments are solved, and the tape softening problems are achieved. Longer service life and higher safety.
Patent Information
- Application Number
- CN202323574051.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-27
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2033-12-27
AI Technical Summary
The existing lithium battery spacer tape has poor heat dissipation effect in high temperature environments, resulting in a reduced service life and is likely to soften the tape for a long time.
The spacer tape design adopts a multi-layer structure, including thermal conductive layer, silicone particles, fill layer, heat-resistant layer and reinforcement layer. The heat conduction is carried out through the thermal conductive layer. The silicone particles lead to heat, and the heat dissipation layer dissipates heat to avoid heat accumulation, and through the reinforcement layer Improves mechanical properties and chemical stability and prevents softening.
It effectively improves the heat dissipation effect and service life of the lithium battery space tape, avoids the softening of the tape caused by excessive heat, and enhances safety and stability.
Smart Images
Figure CN222274433U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of spacer tapes, in particular to a spacer tape for lithium batteries. Background Art
[0002] Adhesive tape is composed of two parts: base and adhesive. It connects two or more unconnected objects together through bonding. A layer of adhesive is coated on its inner surface. It is widely used in daily life and light industrial packaging. High temperature resistant interval tape is one of the adhesive tapes.
[0003] The Chinese patent with patent number CN202123438314.4 discloses a high-temperature resistant spacing tape for lithium batteries. In view of the problems that the tear end of the existing spacing tape for lithium batteries is not convenient for positioning, the tearing operation of the spacing tape is cumbersome, and the use effect is not good, the following scheme is proposed, which includes a tape roll, the tape roll is arranged in a tubular shape, the outer side of the tape roll is wound with a tape body, the tape body is provided with a tear end, and a rotating tube is rotatably installed inside the tape roll, the front end and the rear end of the rotating tube extend to the front end and the rear end of the tape roll respectively, and the front end and the rear end of the rotating tube are slidably installed with slip rings, and the tops of the two slip rings extend to the top of the tape body. Compared with the conventional high-temperature resistant spacing tape for lithium batteries, the utility model is convenient for positioning the tear end, convenient for tearing and breaking the tape body, simplifies the steps of tearing the tape body, has good use effect, and is conducive to popularization and use.
[0004] The lithium battery spacer tape described in the above patent realizes the installation and wrapping of lithium batteries by using spacer tape. Although the above method can meet the functions of battery fixation, electrical insulation, diaphragm protection and electrolyte leakage prevention of the spacer tape, a certain amount of heat will be generated when the battery is in use. The traditional insulating tape cannot effectively conduct the heat, resulting in poor heat dissipation effect of the lithium battery spacer tape, which greatly reduces the service life of the power battery and the heat dissipation and insulation performance. At the same time, when the tape works for a long time, the heat can easily cause the tape to soften. Utility Model Content
[0005] 1. Technical issues to be resolved
[0006] The technical problem to be solved by the utility model is to provide a lithium battery spacer tape which can resist heat and dissipate heat and avoid tape softening in view of the current status of the prior art.
[0007] (II) Technical solution
[0008] The utility model is achieved through the following technical scheme: the utility model proposes a spacer tape for lithium batteries, including a tape body, a base layer is arranged in the middle part of the tape body, a heat-resistant layer is fixed on the upper end of the base layer, a corrosion-resistant layer is arranged on the upper end of the heat-resistant layer, a heat dissipation layer is installed on the upper end of the corrosion-resistant layer, a reinforcement layer is arranged on the upper end of the heat dissipation layer, a heat-conducting layer is fixed on the lower end of the base layer, a polyacrylate pressure-sensitive adhesive layer is arranged on the bottom end of the heat-conducting layer, a filling layer is fixed in the polyacrylate pressure-sensitive adhesive layer, the filling layer is filled with silica gel particles, a PET polyester film base layer is installed on the lower end of the polyacrylate pressure-sensitive adhesive layer, and an insulating layer is evenly arranged around the outer side of the tape body.
[0009] Furthermore, a PE coating is provided on the inner side of the insulating layer, an oil-proof and anti-fouling coating is provided on the outer side of the insulating layer, and an adhesive layer is fixed on the bottom end of the tape body.
[0010] By adopting the above technical solution, the insulating layer can ensure the insulation of the surface of the tape, thereby facilitating the tape body to fix the battery, electrically insulate, protect the diaphragm, and prevent electrolyte leakage.
[0011] Furthermore, the PE coating is bonded to the insulating layer, the PE coating is a polyethylene particle coating, and the oil-proof and antifouling coating is bonded to the insulating layer.
[0012] By adopting the above technical scheme, the PE coating has the characteristics of good toughness, high burst resistance, good waterproof and oil resistance, and is divided into glossy film and matte film, which can ensure the glossiness of the tape surface. Combined with the design of oil-proof and anti-fouling coating, it can effectively avoid the occurrence of stains on the tape surface and the occurrence of loose adhesion caused by stains.
[0013] Furthermore, the oil-proof and anti-fouling coating is bonded to the insulating layer, the adhesive layer is bonded to the tape body, and the adhesive layer is mainly made of emulsion and resin raw materials.
[0014] By adopting the above technical solution, the adhesive layer realizes the main function of the lithium battery spacer tape body, and the adhesive layer can ensure the viscosity of the lithium battery spacer tape when it is used.
[0015] Furthermore, the base layer is bonded to the tape body, the heat-resistant layer is bonded to the tape body, and the corrosion-resistant layer is bonded to the heat-resistant layer.
[0016] By adopting the above technical solution, the base layer is the main layer of the tape, and the heat-resistant layer can effectively increase the heat-resistant effect of the lithium battery spacer tape.
[0017] Furthermore, the heat dissipation layer is bonded to the corrosion-resistant layer, and the heat dissipation layer is bonded to the reinforcement layer, and the reinforcement layer is made of imide, polyarylether, or polyphenylene ether material.
[0018] By adopting the above technical solution, the corrosion-resistant layer can effectively improve the service life of the lithium battery spacer tape in various environments, and the reinforcement layer has good mechanical properties and chemical stability at high temperatures, which can effectively prevent the tape from softening.
[0019] Furthermore, the heat conductive layer is bonded to the base layer, and the heat conductive layer is bonded to the polyacrylate pressure-sensitive adhesive layer.
[0020] By adopting the above technical solution, the heat-conducting layer can conduct heat to avoid heat accumulation, and the polyacrylate pressure-sensitive adhesive layer can give the tape sufficient cohesive strength and adhesion, and has the characteristic of no harmful gas escape.
[0021] Furthermore, the filling layer is formed on the polyacrylate pressure-sensitive adhesive layer, the silica gel particles are bonded to the filling layer, and the PET polyester film base layer is bonded to the polyacrylate pressure-sensitive adhesive layer.
[0022] By adopting the above technical solution, the filling layer realizes the fixed installation of the silica gel particles, the silica gel particles can effectively realize the heat extraction, the PET polyester film base layer can effectively avoid the generation of static electricity, and improves the stability of the lithium battery spacer tape during use.
[0023] (III) Beneficial effects
[0024] Compared with the prior art, the utility model has the following beneficial effects:
[0025] In order to solve the existing problem of lithium battery spacer tape, the installation and wrapping of lithium batteries is realized by using spacer tape. Although the above method can meet the functions of battery fixing, electrical insulation, diaphragm protection and electrolyte leakage prevention of the spacer tape, a certain amount of heat will be generated when the battery is in use. The traditional insulating tape cannot effectively conduct the heat, resulting in poor heat dissipation effect of the lithium battery spacer tape, which greatly reduces the service life of the power battery and the heat dissipation and insulation performance. At the same time, when the tape works for a long time, the heat easily causes the tape to soften. The utility model is designed with a heat conductive layer, silica gel particles, a filling layer, a heat resistant layer and a reinforcing layer. When the lithium battery spacer tape is used, the heat can be effectively derived from the lithium battery spacer tape by cooperating with the design of the heat conductive layer, silica gel particles and the filling layer, and then dissipated through the heat dissipation layer, thereby ensuring the service life and heat dissipation and insulation performance of the lithium battery spacer tape. At the same time, when the lithium battery spacer tape is used, the design of the reinforcing layer can effectively improve the safety of the lithium battery spacer tape when in use, and can effectively avoid the situation where the lithium battery spacer tape softens due to excessive heat. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 This is a main cross-sectional view of a spacer tape for lithium batteries described in the utility model;
[0027] Figure 2 The utility model is a kind of lithium battery spacer tape Figure 1 Enlarged view of point A in the middle.
[0028] The following are the descriptions of the reference numerals:
[0029] 1. PE coating; 2. Insulation layer; 3. Polyacrylate pressure-sensitive adhesive layer; 4. Thermal conductive layer; 5. Silicone particles; 6. Heat dissipation layer; 7. Filling layer; 8. Adhesive layer; 9. Corrosion-resistant layer; 10. Heat-resistant layer; 11. Base layer; 12. PET polyester film base layer; 13. Oil-proof and anti-fouling coating; 14. Tape body; 15. Reinforcement layer. DETAILED DESCRIPTION
[0030] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0031] like Figure 1-Figure 2 As shown, a spacer tape for lithium batteries in this embodiment includes a tape body 14, a base layer 11 is arranged in the middle of the tape body 14, which is the main layer structure of the tape, a heat-resistant layer 10 is fixed on the upper end of the base layer 11, a corrosion-resistant layer 9 is arranged on the upper end of the heat-resistant layer 10, a heat dissipation layer 6 is installed on the upper end of the corrosion-resistant layer 9, and a reinforcing layer 15 is arranged on the upper end of the heat dissipation layer 6, a heat-conducting layer 4 is fixed on the lower end of the base layer 11, and a polyacrylate pressure-sensitive adhesive layer 3 is arranged on the bottom end of the heat-conducting layer 4. The polyacrylate pressure-sensitive adhesive layer 3 can give the tape sufficient cohesive strength and adhesion, and has the characteristic of no harmful gas escape. The polyacrylate pressure-sensitive adhesive layer 3 has a heat-resistant layer 6. A filling layer 7 is fixed, and the filling layer 7 is filled with silica gel particles 5. The design of the filling layer 7, the heat-resistant layer 10, and the heat-conducting layer 4 ensures that the heat is timely discharged and dissipated when the lithium battery spacer tape is working for a long time, which can effectively avoid heat accumulation and protect the safety of the lithium battery. A PET polyester film base layer 12 is installed at the lower end of the polyacrylate pressure-sensitive adhesive layer 3. The PET polyester film base layer 12 can effectively avoid the generation of static electricity and improve the stability of the lithium battery spacer tape when in use. An insulating layer 2 is evenly arranged around the outer side of the tape body 14. The insulating layer 2 ensures the insulation of the surface of the lithium battery spacer tape.
[0032] like Figure 1-Figure 2As shown, in this embodiment, a PE coating 1 is provided on the inner side of the insulating layer 2, an oil-proof and antifouling coating 13 is provided on the outer side of the insulating layer 2, an adhesive layer 8 is fixed to the bottom end of the tape body 14, the insulating layer 2 can ensure the insulation of the tape surface, thereby facilitating the tape body 14 to fix the battery, electrically insulate, protect the diaphragm, and prevent electrolyte leakage, etc., the PE coating 1 is bonded to the insulating layer 2, the PE coating 1 is a polyethylene particle coating, the oil-proof and antifouling coating 13 is bonded to the insulating layer 2, the PE coating 1 has the characteristics of good toughness, high burst resistance, good waterproof and oil-proof, and is divided into a glossy film and a matte film, which can ensure the glossiness of the tape surface, and cooperate with the oil-proof The design of the anti-fouling coating 13 can effectively avoid the occurrence of loose adhesion caused by stains on the surface of the tape. The oil-proof and anti-fouling coating 13 is bonded to the insulating layer 2, and the adhesive layer 8 is bonded to the tape body 14. The adhesive layer 8 is mainly made of emulsion and resin raw materials. The adhesive layer 8 realizes the main function of the lithium battery spacer tape body. The adhesive layer 8 can ensure the viscosity of the lithium battery spacer tape when used. The base layer 11 is bonded to the tape body 14, the heat-resistant layer 10 is bonded to the tape body 14, and the corrosion-resistant layer 9 is bonded to the heat-resistant layer 10. The base layer 11 is the main layer of the tape, and the heat-resistant layer 10 can effectively increase the heat resistance of the lithium battery spacer tape.
[0033] like Figure 1-Figure 2 As shown, in this embodiment, the heat dissipation layer 6 is bonded to the corrosion-resistant layer 9, and the heat dissipation layer 6 is bonded to the reinforcement layer 15. The reinforcement layer 15 is made of imide, polyarylether, and polyphenylene ether materials. The corrosion-resistant layer 9 can effectively improve the service life of the lithium battery spacer tape in various environments. The reinforcement layer 15 has good mechanical properties and chemical stability at high temperatures, and can effectively prevent the tape from softening. The heat conductive layer 4 is bonded to the base layer 11, and the heat conductive layer 4 is bonded to the polyacrylate pressure-sensitive adhesive layer 3. The heat conductive layer 4 can conduct heat to prevent heat accumulation. In the case of accumulation, the polyacrylate pressure-sensitive adhesive layer 3 can give the tape sufficient cohesive strength and adhesion, and has the characteristic of no harmful gas escape, the filling layer 7 is formed on the polyacrylate pressure-sensitive adhesive layer 3, the silica gel particles 5 are bonded to the filling layer 7, and the PET polyester film base layer 12 is bonded to the polyacrylate pressure-sensitive adhesive layer 3. The filling layer 7 realizes the fixed installation of the silica gel particles 5, the silica gel particles 5 can effectively realize the heat extraction, and the PET polyester film base layer 12 can effectively avoid the generation of static electricity, thereby improving the stability of the lithium battery spacer tape during use.
[0034] The specific implementation process of this embodiment is as follows: when using the lithium battery spacer tape, according to actual needs, the automotive lithium battery tape is cut into the required length and width. When cutting, it is necessary to be careful not to cut the tape too short or too narrow, otherwise it will affect the fixing effect. Then the tape is wrapped around the port of the lithium battery to achieve the spacing effect of the tape. The design of the thermal conductive layer 4, silica gel particles 5, filling layer 7 and heat dissipation layer 6 can facilitate the lithium battery spacer tape to quickly conduct heat and dissipate heat, avoiding heat accumulation and damaging the lithium battery. The design of the heat-resistant layer 10 and the reinforcement layer 15 can effectively avoid the softening of the tape due to excessive heat, greatly improving the practicality of the lithium battery spacer tape.
[0035] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A spacer tape for lithium batteries, characterized in that: The invention comprises an adhesive tape body (14), wherein a base layer (11) is arranged in the middle of the adhesive tape body (14), a heat-resistant layer (10) is fixed on the upper end of the base layer (11), a corrosion-resistant layer (9) is arranged on the upper end of the heat-resistant layer (10), a heat dissipation layer (6) is installed on the upper end of the corrosion-resistant layer (9), a reinforcement layer (15) is arranged on the upper end of the heat dissipation layer (6), a heat-conducting layer (4) is fixed on the lower end of the base layer (11), a polyacrylate pressure-sensitive adhesive layer (3) is arranged on the bottom end of the heat-conducting layer (4), a filling layer (7) is fixed in the polyacrylate pressure-sensitive adhesive layer (3), the filling layer (7) is filled with silica gel particles (5), a PET polyester film base layer (12) is installed on the lower end of the polyacrylate pressure-sensitive adhesive layer (3), and an insulating layer (2) is evenly arranged around the outer side of the adhesive tape body (14).
2. A spacer tape for lithium batteries according to claim 1, characterized in that: The inner side of the insulating layer (2) is provided with a PE coating (1), the outer side of the insulating layer (2) is provided with an oil-proof and anti-fouling coating (13), and the bottom end of the tape body (14) is fixed with an adhesive layer (8).
3. A spacer tape for lithium batteries according to claim 2, characterized in that: The PE coating (1) is bonded to the insulating layer (2), the PE coating (1) is a polyethylene particle coating, and the oil-proof and anti-fouling coating (13) is bonded to the insulating layer (2).
4. A spacer tape for lithium batteries according to claim 2, characterized in that: The oil-proof and anti-fouling coating (13) is bonded to the insulating layer (2), and the adhesive layer (8) is bonded to the tape body (14), wherein the adhesive layer (8) is mainly made of emulsion and resin raw materials.
5. The spacer tape for lithium battery according to claim 1, characterized in that: The base layer (11) is bonded to the tape body (14), the heat-resistant layer (10) is bonded to the tape body (14), and the corrosion-resistant layer (9) is bonded to the heat-resistant layer (10).
6. The spacer tape for lithium battery according to claim 1, characterized in that: The heat dissipation layer (6) is bonded to the corrosion-resistant layer (9), and the heat dissipation layer (6) is bonded to the reinforcement layer (15), and the reinforcement layer (15) is made of imide, polyarylether, or polyphenylene ether material.
7. The spacer tape for lithium battery according to claim 1, characterized in that: The heat-conducting layer (4) is bonded to the base layer (11), and the heat-conducting layer (4) is bonded to the polyacrylate pressure-sensitive adhesive layer (3).
8. The spacer tape for lithium battery according to claim 1, characterized in that: The filling layer (7) is formed on the polyacrylate pressure-sensitive adhesive layer (3), the silica gel particles (5) are bonded to the filling layer (7), and the PET polyester film base layer (12) is bonded to the polyacrylate pressure-sensitive adhesive layer (3).