CN219010207U - Flame-retardant electrolyte-resistant lithium battery adhesive tape - Google Patents
Flame-retardant electrolyte-resistant lithium battery adhesive tape Download PDFInfo
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- CN219010207U CN219010207U CN202320074977.2U CN202320074977U CN219010207U CN 219010207 U CN219010207 U CN 219010207U CN 202320074977 U CN202320074977 U CN 202320074977U CN 219010207 U CN219010207 U CN 219010207U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model provides a fire-retardant electrolyte-resistant lithium battery sticky tape, including the substrate layer, fire-retardant layer, the insulating layer, first electrolyte-resistant gluing layer, second electrolyte-resistant gluing layer, first release layer and second release layer, fire-retardant layer and insulating layer set up respectively on two surfaces of substrate layer, first electrolyte-resistant gluing layer and second electrolyte-resistant gluing layer set up respectively on the other surface of fire-retardant layer and insulating layer, first electrolyte-resistant gluing layer includes a plurality of first gluing strips and the second gluing strips that set up along the width direction interval of sticky tape, the second electrolyte-resistant gluing layer includes a plurality of third gluing strips and the fourth gluing strips of width direction interval along the sticky tape, be provided with the clearance between two gluing strips, each gluing strip is the pressure-sensitive adhesive material of different types. The utility model ensures that the adhesive tape has certain flame retardance and electrical insulation, can be adhered to two surfaces with different properties to balance the defects of a single adhesive type, and improves the comprehensive performance of the electrolyte-resistant adhesive layer so as to adapt to different adhesive materials.
Description
Technical Field
The utility model relates to the technical field of adhesive tapes, in particular to a flame-retardant electrolyte-resistant lithium battery adhesive tape.
Background
Lithium batteries are broadly divided into two categories: the lithium metal battery and the lithium ion battery are rechargeable, the electrolyte can cause oxidation reduction after the lithium battery is used for a long time, so that the service time of elements of the battery is reduced, and a special adhesive tape is generally used for fixing and protecting the battery core, the electrode lug and the termination part of the lithium ion battery. The lithium battery tape contacts the electrolyte of the lithium ion battery in the battery assembly process and the later application process, so the tape applied to the lithium ion battery needs to withstand the electrolyte and long-term soaking at high temperature. The electrolyte still maintains enough adhesive property (not less than 85%) after being soaked for a long time, prevents leakage of the electrolyte, and does not pollute the electrolyte by the dissolved matters. The lithium battery adhesive tape is required to have certain flame retardance, insulativity and good adhesive property, the types of materials to be adhered in the fields are different, and the adhesive force of the same adhesive on the surfaces of different materials is different, so that the general adhesive tape made of the same material is difficult to meet the requirements; meanwhile, for long-term soaking at high temperature, the adhesive tape is also required to have certain temperature resistance. It is therefore challenging to develop a lithium battery tape that addresses such issues.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide the flame-retardant electrolyte-resistant lithium battery adhesive tape which can be soaked in high-temperature electrolyte for a long time without degumming and has insulating and flame-retardant properties.
The utility model is realized by the following technical scheme:
the utility model provides a fire-retardant electrolyte-resistant lithium battery sticky tape, includes substrate layer, fire-retardant layer, insulating layer, first electrolyte-resistant gluing layer, second electrolyte-resistant gluing layer, first from type layer and second from type layer, fire-retardant layer and insulating layer set up respectively on two upper and lower surfaces of substrate layer, first electrolyte-resistant gluing layer sets up on the other surface of fire-retardant layer, second electrolyte-resistant gluing layer sets up on the other surface of insulating layer, first from type layer sets up on the other surface of first electrolyte-resistant gluing layer, second from type layer sets up on the other surface of second electrolyte-resistant gluing layer; the substrate layer comprises a nylon layer, a foaming material layer and an aluminum foil layer which are sequentially arranged, and all the layers are bonded into a whole through a composite process; the first electrolyte-resistant adhesive layer comprises a plurality of first adhesive strips and second adhesive strips, the first adhesive strips and the second adhesive strips are arranged on the flame-retardant layer at intervals along the width direction of the adhesive tape, and gaps are arranged between the first adhesive strips and the second adhesive strips; the second electrolyte-resistant adhesive layer comprises a plurality of third adhesive strips and fourth adhesive strips, the third adhesive strips and the fourth adhesive strips are arranged on the insulating layer along the width direction of the adhesive tape at intervals, and gaps are also formed between the third adhesive strips and the fourth adhesive strips. Through setting up banding gluing strip at two electrolyte resistant gluing layers, set up the clearance between each gluing strip, be favorable to the heat dissipation. The two sides of the base material are respectively provided with the flame retardant layer and the insulating layer, so that the adhesive tape has certain flame retardance and insulativity.
The types of materials of the two electrolyte-resistant adhesive layers can be set according to the material properties of two surfaces to be adhered and specific application occasions, for example, for the adhesion of two plastic surfaces, the first electrolyte-resistant adhesive layer and the second electrolyte-resistant adhesive layer can be acrylic pressure-sensitive adhesives, and for occasions needing temperature resistance, the first adhesive strip and the second adhesive strip can be set to be different types of acrylic pressure-sensitive adhesives, wherein one type of acrylic pressure-sensitive adhesives is high-temperature resistant, so that the temperature resistance and the adhesive strength performance are balanced, and the electrolyte-resistant adhesive layer with excellent comprehensive performance is obtained. For the adhesion of the two rubber surfaces, the first electrolyte-resistant adhesive layer and the second electrolyte-resistant adhesive layer can both be rubber pressure-sensitive adhesives, and one of the adhesive tapes can be selected from silicone rubber pressure-sensitive adhesives or crosslinking rubber pressure-sensitive adhesives for improving the temperature resistance. For the adhesion of the metal surface and the plastic or rubber surface, the electrolyte-resistant adhesive layer contacted with the metal surface can be an acrylic pressure-sensitive adhesive, the electrolyte-resistant adhesive layer contacted with the plastic or rubber surface can be an organosilicon pressure-sensitive adhesive, a rubber pressure-sensitive adhesive or an acrylic pressure-sensitive adhesive, and the pressure-sensitive adhesive type of each adhesive strip is selected according to specific use requirements.
In order to ensure that the first electrolyte-resistant adhesive layer and the second electrolyte-resistant adhesive layer have good comprehensive performance and balance the performances in all aspects, further, the first adhesive strip and the second adhesive strip are made of two different pressure-sensitive adhesive materials, and the third adhesive strip and the fourth adhesive strip are made of two different pressure-sensitive adhesive materials. Such as temperature-resistant and common staggered arrangement, and staggered arrangement with high raw material price and low raw material price.
In order to improve the overall performance of the whole adhesive structure, further, the first adhesive strip and the third adhesive strip are made of the same pressure-sensitive adhesive material, the second adhesive strip and the fourth adhesive strip are made of the same pressure-sensitive adhesive material, the first adhesive strip and the third adhesive strip are arranged in a staggered mode in the direction of the width of the adhesive tape, and the second adhesive strip and the fourth adhesive strip are arranged in a staggered mode in the direction of the width of the adhesive tape.
Further, the first adhesive strip and the third adhesive strip are acrylate pressure-sensitive adhesives, the second adhesive strip and the fourth adhesive strip are organic silicon pressure-sensitive adhesives, the comprehensive performance of the acrylate pressure-sensitive adhesives is good, and the organic silicon pressure-sensitive adhesives can have good temperature resistance and weather resistance and durability; or, the first adhesive strip and the third adhesive strip are acrylate pressure-sensitive adhesives, the second adhesive strip and the fourth adhesive strip are rubber pressure-sensitive adhesives, and the rubber pressure-sensitive adhesives can have excellent self-adhesion.
Further, the first adhesive strip and the second adhesive strip are two different types of acrylic pressure-sensitive adhesive materials, and the third adhesive strip and the fourth adhesive strip are two different types of rubber pressure-sensitive adhesive materials, so that the adhesive can adapt to the requirements of two different adhesive surfaces, such as the adhesion between a plastic or metal surface and a rubber surface.
Further, the widths of the first adhesive strip and the second adhesive strip are equal, the widths of the third adhesive strip and the fourth adhesive strip are equal, the width of the lithium battery tape is 10-30mm, the width of the first adhesive strip or the second adhesive strip is 2-8mm, and the width of the third adhesive strip and the fourth adhesive strip is 2-8mm.
The base material layer can be a common plastic film, a common fiber fabric and the like, such as PET, PI, PU, PVC, PE, polyester fiber cloth, glass fiber cloth and the like, and is further a foaming material, such as a foaming polyurethane material, an EVA foaming material, an EPS foaming material and the like, so as to meet the requirement of shock resistance. In order to improve the tensile property and the tear resistance of the foaming material, the substrate layer is embedded with net-shaped reinforcing ribs, and the net surface of the reinforcing ribs is parallel to the plane of the adhesive tape.
Further, the flame-retardant layer is glass fiber flame-retardant cloth, polyacrylonitrile flame-retardant cloth or nitrile-chloridion fiber cloth, and the materials have ideal flame-retardant effect.
Further, the insulating layer is made of polyimide film, polyaramid fiber paper, polyester fiber insulating cloth, PET film and the like, and the materials endow the insulating layer with a good insulating effect.
Further, the thickness of the substrate layer is 20-60 mu m, the thicknesses of the first electrolyte-resistant adhesive layer and the second electrolyte-resistant adhesive layer are 15-50 mu m, the thickness of the flame-retardant layer is 50-100 mu m, and the thickness of the insulating layer is 50-100 mu m.
The adhesive tape has certain flame retardance and electrical insulation through the arrangement of the flame retardant layer and the insulating layer, can be applied to the assembly and later application of a lithium battery, and can be adhered to two surfaces with different properties by arranging a plurality of adhesive strips on the first electrolyte-resistant adhesive layer and the second electrolyte-resistant adhesive layer at intervals respectively, so that the pertinence is stronger, the defects of a single adhesive type can be further balanced through the arrangement of the adhesive strips with two different materials at intervals, the comprehensive performance of the electrolyte-resistant adhesive layer is improved, and the adhesive tape is suitable for different adhesive materials; the performance of the whole adhesive structure is further balanced through the mutual arrangement sequence of the adhesive strips on the first electrolyte-resistant adhesive layer and the second electrolyte-resistant adhesive layer; the base material layer is arranged to be of a foaming structure, so that the base material layer has certain buffering and shock resistance, and the reinforcing ribs are arranged in the base material layer, so that the tear resistance of the adhesive tape is further improved.
Drawings
Fig. 1 is a schematic cross-sectional view of an embodiment of the present utility model along the width direction of an adhesive tape.
Fig. 2 is a schematic front view of a first electrolyte-resistant adhesive layer according to an embodiment of the present utility model.
Fig. 3 is a schematic partial cross-sectional view of another embodiment of the present utility model along the width direction of the adhesive tape.
FIG. 4 is a schematic diagram of a substrate layer according to an embodiment of the utility model.
Reference numerals: 1-a substrate layer; 2-a flame retardant layer; 3-an insulating layer; 4-a first electrolyte resistant adhesive layer; 5-a second electrolyte-resistant adhesive layer; 6-a first release layer; 7-a second release layer; 8-reinforcing ribs; 41-a first gap; 42-a first adhesive strip; 43-a second adhesive strip; 51-a second gap; 52-a third adhesive strip; 53-fourth adhesive strips.
Detailed Description
1-3, the flame-retardant electrolyte-resistant lithium battery adhesive tape comprises a substrate layer 1, a flame-retardant layer 2, an insulating layer 3, a first electrolyte-resistant adhesive layer 4, a second electrolyte-resistant adhesive layer 5, a first release layer 6 and a second release layer 7, wherein the flame-retardant layer 2 and the insulating layer 3 are respectively arranged on the upper surface and the lower surface of the substrate layer 1, the first electrolyte-resistant adhesive layer 4 is arranged on the other surface of the flame-retardant layer 2, the second electrolyte-resistant adhesive layer 5 is arranged on the other surface of the insulating layer 3, the first release layer 6 is arranged on the other surface of the first electrolyte-resistant adhesive layer 4, and the second release layer 7 is arranged on the other surface of the second electrolyte-resistant adhesive layer 5; the substrate layer 1 comprises a nylon layer 11, a foaming material layer 12 and an aluminum foil layer 13 which are sequentially arranged, and all the layers are adhered into a whole through a composite process; the first electrolyte-resistant adhesive layer 4 comprises a plurality of first adhesive strips 42 and second adhesive strips 43, the first adhesive strips 42 and the second adhesive strips 43 are arranged on the flame-retardant layer 2 at intervals along the width direction of the adhesive tape, and gaps (first gaps 41) are arranged between the first adhesive strips 42 and the second adhesive strips 43; the second electrolyte-resistant adhesive layer 5 comprises a plurality of third adhesive strips 52 and fourth adhesive strips 53, the third adhesive strips 52 and the fourth adhesive strips 53 are arranged on the insulating layer 3 along the width direction of the adhesive tape at intervals, and gaps are also arranged between the third adhesive strips 52 and the fourth adhesive strips 53. By arranging strip-shaped adhesive strips on the two electrolyte-resistant adhesive layers, gaps (second gaps 51) are arranged between the adhesive strips, so that heat dissipation is facilitated. The two sides of the base material are respectively provided with the flame retardant layer 2 and the insulating layer 3, so that the adhesive tape has certain flame retardance and insulativity.
The types of materials of the two electrolyte-resistant adhesive layers can be set according to the material properties of the two surfaces to be adhered and specific application occasions, for example, for the adhesion of the two plastic surfaces, the first electrolyte-resistant adhesive layer 4 and the second electrolyte-resistant adhesive layer 5 can be acrylic pressure-sensitive adhesives, and for occasions needing temperature resistance, the first adhesive strip 42 and the second adhesive strip 43 can be acrylic pressure-sensitive adhesives of different types, one of which is high-temperature-resistant, so that the temperature resistance and the adhesive strength are balanced, and the electrolyte-resistant adhesive layer with excellent comprehensive performance is obtained. For the adhesion of the two rubber surfaces, the first electrolyte-resistant adhesive layer 4 and the second electrolyte-resistant adhesive layer 5 can both be rubber pressure-sensitive adhesives, and one of the adhesive tapes can be selected from silicone rubber pressure-sensitive adhesives or crosslinking rubber pressure-sensitive adhesives for improving the temperature resistance. For the adhesion of the metal surface and the plastic or rubber surface, the electrolyte-resistant adhesive layer contacted with the metal surface can be an acrylic pressure-sensitive adhesive, the electrolyte-resistant adhesive layer contacted with the plastic or rubber surface can be an organosilicon pressure-sensitive adhesive, a rubber pressure-sensitive adhesive or an acrylic pressure-sensitive adhesive, and the pressure-sensitive adhesive type of each adhesive strip is selected according to specific use requirements.
As one embodiment, the first adhesive strip 42 and the second adhesive strip 43 are two different pressure-sensitive adhesive materials, and the third adhesive strip 52 and the fourth adhesive strip 53 are two different pressure-sensitive adhesive materials. For example, the heat-resistant and common-type staggered arrangement, the staggered arrangement of high raw material price and low raw material price can enable the first electrolyte-resistant adhesive layer 4 and the second electrolyte-resistant adhesive layer 5 to have good comprehensive performance so as to balance the performances of heat resistance, initial adhesion, holding adhesion, adhesive strength, cost and the like.
As one embodiment, as shown in fig. 3, the first adhesive strip 42 and the third adhesive strip 52 are made of the same pressure-sensitive adhesive material, the second adhesive strip 43 and the fourth adhesive strip 53 are made of the same pressure-sensitive adhesive material, the first adhesive strip 42 and the third adhesive strip 52 are arranged in a staggered manner in the direction of the width of the adhesive tape, and the second adhesive strip 43 and the fourth adhesive strip 53 are arranged in a staggered manner in the direction of the width of the adhesive tape, so as to improve the overall performance of the whole adhesive structure.
Specifically, the first adhesive strips 42 and the third adhesive strips 52 may be acrylate pressure-sensitive adhesives, the second adhesive strips 43 and the fourth adhesive strips 53 are organosilicon pressure-sensitive adhesives, the comprehensive performance of the acrylate pressure-sensitive adhesives is better, and the organosilicon pressure-sensitive adhesives may have better temperature resistance and weather resistance. Alternatively, the first adhesive strips 42 and the third adhesive strips 52 are acrylate pressure-sensitive adhesives, and the second adhesive strips 43 and the fourth adhesive strips 53 are rubber pressure-sensitive adhesives, which may have excellent self-adhesion.
As one embodiment, the first adhesive strip 42 and the second adhesive strip 43 are two different types of acrylic pressure-sensitive adhesive materials, and the third adhesive strip 52 and the fourth adhesive strip 53 are two different types of rubber pressure-sensitive adhesive materials, so as to adapt to the requirements of two different adhesion surfaces, such as adhesion between a plastic or metal surface and a rubber surface. Further, the widths of the first adhesive strip 42 and the second adhesive strip 43 are equal, the widths of the third adhesive strip 52 and the fourth adhesive strip 53 are equal, the width of the lithium battery tape is 10-30mm, the width of the first adhesive strip 42 or the second adhesive strip 43 is 2-8mm, and the width of the third adhesive strip 52 and the fourth adhesive strip 53 is 2-8mm.
The base material layer 1 may be a common plastic film, a fiber fabric, etc., such as PET, PI, PU, PVC, PE, polyester fiber fabric, glass fiber fabric, etc., to improve the shock resistance of the adhesive tape, and as one embodiment, the base material layer 1 is a foam material, such as a foamed polyurethane material, an EVA foam material, an EPS foam material, etc., so as to meet the requirement of shock resistance. In order to improve the tensile property and tear resistance of the foaming material, as shown in fig. 4, the substrate layer 1 is embedded with a net-shaped reinforcing rib 8, and the net surface of the reinforcing rib 8 is parallel to the plane of the adhesive tape.
As one of the embodiments, the flame retardant layer 2 is glass fiber flame retardant cloth, polyacrylonitrile flame retardant cloth or nitrile-chloron fiber cloth, and the materials have better flame retardant effect. The insulating layer 3 is a polyimide film, a polyaramid fiber paper, a polyester fiber insulating cloth, a PET film and the like, and the materials can endow the insulating layer 3 with a good insulating effect.
As one embodiment, the thickness of the substrate layer 1 is 20-60 μm, the thicknesses of the adhesive layers of the first electrolyte-resistant adhesive layer 4 and the second electrolyte-resistant adhesive layer 5 are 15-50 μm, the thickness of the flame-retardant layer 2 is 50-100 μm, and the thickness of the insulating layer 3 is 50-100 μm.
The foregoing detailed description is directed to embodiments of the utility model which are not intended to limit the scope of the utility model, but rather to cover all modifications and variations within the scope of the utility model.
Claims (10)
1. The flame-retardant electrolyte-resistant lithium battery adhesive tape is characterized by comprising a substrate layer, a flame-retardant layer, an insulating layer, a first electrolyte-resistant adhesive layer, a second electrolyte-resistant adhesive layer, a first release layer and a second release layer, wherein the flame-retardant layer and the insulating layer are respectively arranged on the upper surface and the lower surface of the substrate layer; the first electrolyte-resistant adhesive layer comprises a plurality of first adhesive strips and second adhesive strips, the first adhesive strips and the second adhesive strips are arranged on the flame-retardant layer at intervals along the width direction of the adhesive tape, and gaps are arranged between the first adhesive strips and the second adhesive strips; the second electrolyte-resistant adhesive layer comprises a plurality of third adhesive strips and fourth adhesive strips, the third adhesive strips and the fourth adhesive strips are arranged on the insulating layer along the width direction of the adhesive tape at intervals, and gaps are also formed between the third adhesive strips and the fourth adhesive strips.
2. The flame retardant electrolyte resistant lithium battery tape of claim 1, wherein the first and second adhesive strips are of two different pressure sensitive adhesive materials, and the third and fourth adhesive strips are of two different pressure sensitive adhesive materials.
3. The flame-retardant electrolyte-resistant lithium battery adhesive tape according to claim 1 or 2, wherein the first adhesive tape and the third adhesive tape are made of the same pressure-sensitive adhesive material, the second adhesive tape and the fourth adhesive tape are made of the same pressure-sensitive adhesive material, the first adhesive tape and the third adhesive tape are arranged in a staggered manner in the direction of the width of the adhesive tape, and the second adhesive tape and the fourth adhesive tape are arranged in a staggered manner in the direction of the width of the adhesive tape.
4. The flame-retardant electrolyte-resistant lithium battery adhesive tape according to claim 3, wherein the first adhesive strip and the third adhesive strip are acrylate pressure-sensitive adhesives, and the second adhesive strip and the fourth adhesive strip are organic silicon pressure-sensitive adhesives;
or, the first adhesive strip and the third adhesive strip are acrylate pressure-sensitive adhesives, and the second adhesive strip and the fourth adhesive strip are rubber pressure-sensitive adhesives.
5. The flame retardant electrolyte-resistant lithium battery tape according to claim 2, wherein the first adhesive strip and the second adhesive strip are two different types of acrylic pressure sensitive adhesive materials, and the third adhesive strip and the fourth adhesive strip are two different types of rubber pressure sensitive adhesive materials.
6. The flame-retardant electrolyte-resistant lithium battery adhesive tape according to claim 1 or 2, wherein the first adhesive tape and the second adhesive tape have the same width, the third adhesive tape and the fourth adhesive tape have the same width, the lithium battery adhesive tape has the width of 10-30mm, the first adhesive tape or the second adhesive tape has the width of 2-8mm, and the third adhesive tape and the fourth adhesive tape have the width of 2-8mm.
7. The flame-retardant electrolyte-resistant lithium battery adhesive tape according to claim 1, wherein the base material layer is a foaming material, and net-shaped reinforcing ribs are embedded in the foaming material, and the net surface of the reinforcing ribs is parallel to the plane of the adhesive tape.
8. The flame-retardant electrolyte-resistant lithium battery adhesive tape according to claim 1, wherein the flame-retardant layer is glass fiber flame-retardant cloth, polyacrylonitrile flame-retardant cloth or nitrile-chloridion fiber cloth.
9. The flame-retardant electrolyte-resistant lithium battery tape according to claim 1, wherein the insulating layer is one of a polyimide film, a polyaramid fiber paper, a polyester fiber insulating cloth and a PET film.
10. The flame-retardant electrolyte-resistant lithium battery tape according to claim 1, wherein the thickness of the base material layer is 20-60 μm, the thicknesses of the first electrolyte-resistant adhesive layer and the second electrolyte-resistant adhesive layer are 15-50 μm, the thickness of the flame-retardant layer is 50-100 μm, and the thickness of the insulating layer is 50-100 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320074977.2U CN219010207U (en) | 2023-01-09 | 2023-01-09 | Flame-retardant electrolyte-resistant lithium battery adhesive tape |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320074977.2U CN219010207U (en) | 2023-01-09 | 2023-01-09 | Flame-retardant electrolyte-resistant lithium battery adhesive tape |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219010207U true CN219010207U (en) | 2023-05-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320074977.2U Active CN219010207U (en) | 2023-01-09 | 2023-01-09 | Flame-retardant electrolyte-resistant lithium battery adhesive tape |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219010207U (en) |
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2023
- 2023-01-09 CN CN202320074977.2U patent/CN219010207U/en active Active
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