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CN-224217563-U - Battery blue film and battery

CN224217563UCN 224217563 UCN224217563 UCN 224217563UCN-224217563-U

Abstract

The utility model relates to the technical field of battery production, and discloses a battery blue film and a battery, wherein the battery blue film comprises a substrate layer and a glue layer, the glue layer is attached to one side surface of the substrate layer, the glue layer comprises a plurality of raised areas, the plurality of protruding district arrays are arranged to form the recess district between arbitrary adjacent two protruding district, a plurality of recess district intercommunication each other, in the thickness direction of battery blue membrane, the thickness of protruding district is greater than the thickness of recess district. The battery blue film is used for coating the battery body, the adhesive layer is abutted with the battery body, and the convex area and the concave area are uniformly adhered to the battery body through a hot pressing process. When the battery blue film is used for coating the battery body, bubbles or bulges between the battery body and the battery blue film can be reduced, and when the film is required to be torn again for returning, the generation of large-area residual glue on the surface of the battery body can be avoided, meanwhile, the bonding effect of the battery blue film and the battery body is ensured, and the production efficiency is improved.

Inventors

  • HAN BO
  • CHEN KAI
  • LI ZHENG
  • FENG YUCHUAN

Assignees

  • 苏州清陶新能源科技有限公司

Dates

Publication Date
20260508
Application Date
20250430

Claims (10)

  1. 1. Cell blue membrane, its characterized in that includes: a base material layer (1); The adhesive layer (2), the adhesive layer (2) is attached to one side surface of the substrate layer (1), the adhesive layer (2) comprises a plurality of raised areas (21), the raised areas (21) are arranged in an array mode to form a groove area (22) between any two adjacent raised areas (21), the groove areas (22) are mutually communicated, and in the thickness direction of the battery blue film, the thickness of the raised areas (21) is larger than that of the groove areas (22); The battery blue film is used for coating the battery body, the adhesive layer (2) is abutted with the battery body, and the protruding area (21) and the groove area (22) are uniformly adhered to the battery body through a hot pressing process.
  2. 2. The cell blue film according to claim 1, characterized in that the groove region (22) does not penetrate the glue layer (2) in the thickness direction of the cell blue film, the groove region (22) has a thickness D1, and the protrusion region (21) has a thickness D2,4 μm ∈d2_d1 ∈10 μm.
  3. 3. The cell blue film according to claim 1, wherein the groove region (22) has a thickness D1 and 15 μm-D1-18 μm and the projection region (21) has a thickness D2 and 22 μm-D2-25 μm in the thickness direction of the cell blue film.
  4. 4. The battery blue film according to claim 3, wherein the thickness of the base material layer (1) is D3 and 85 μm D3 90 μm or less and the thickness of the battery blue film after hot pressing is D4 and 108 μm D4 112 μm or less in the thickness direction of the battery blue film.
  5. 5. The cell blue film according to claim 1, wherein the projected area of each of the convex regions (21) onto the base material layer (1) in the thickness direction of the cell blue film is S and 0.1mm 2 ≤S≤1mm 2 , and the width of the groove region (22) is L and 0.1 mm+.l+.0.5 mm.
  6. 6. The cell blue film according to claim 1, characterized in that the shape of the raised area (21) is an equilateral polygon.
  7. 7. The cell blue film according to claim 6, wherein the shape of the raised areas (21) is an equilateral triangle, square or diamond.
  8. 8. The cell blue film according to claim 1, characterized in that the cell blue film comprises a first heating zone (10) and a second heating zone (20) arranged from the center outwards.
  9. 9. The cell blue film according to claim 1, characterized in that it comprises a first heating zone (10) and a second heating zone (20) distributed in sequence from one end to the other.
  10. 10. The battery is characterized by comprising a battery body and the battery blue film according to any one of claims 1 to 9, wherein the battery blue film is coated on the battery body, and the battery blue film is adhered and fixed with the battery body.

Description

Battery blue film and battery Technical Field The utility model relates to the technical field of battery production, in particular to a battery blue film and a battery. Background The battery blue film is an insulating material and is generally coated on the surface of the battery body to insulate and protect the battery, so that the battery is prevented from being electrically connected with an adjacent battery or other metal structures to be short-circuited, and the use safety of the battery is prevented from being influenced. The battery blue film generally comprises a substrate layer and a glue layer, wherein the substrate layer has insulativity, and the glue layer has strong adhesiveness and can be adhered to the surface of the battery body. However, in the current process of coating the battery blue film, due to poor application of the battery blue film, bubbles or bulges are generated between the battery body and the battery blue film, the film is required to be torn again for reworking, and the surface of the battery body is easy to generate large-area residual glue after the film is torn, so that the film can be pasted again after cleaning, and the production efficiency is affected. Therefore, a blue battery film and a battery are needed to solve the above problems. Disclosure of utility model An object of the present utility model is to provide a battery blue film, which can reduce the generation of bubbles or bulges between a battery body and the battery blue film when the battery body is coated with the blue film, and can avoid the generation of large-area residual glue on the surface of the battery body when the battery body needs to be torn back again, and can ensure the bonding effect of the battery blue film and the battery body and improve the production efficiency. The technical scheme adopted by the utility model is as follows: Provided is a battery blue film including: a substrate layer; The adhesive layer is attached to one side surface of the substrate layer, the adhesive layer comprises a plurality of raised areas, the raised areas are arranged in an array mode to form a groove area between any two adjacent raised areas, the groove areas are mutually communicated, and in the thickness direction of the blue film of the battery, the thickness of the raised areas is larger than that of the groove areas; The battery blue film is used for coating the battery body, the adhesive layer is abutted with the battery body, and the protruding area and the groove area are uniformly adhered to the battery body through a hot pressing process. Optionally, along the thickness direction of the blue film of the battery, the groove area does not penetrate through the adhesive layer, the thickness of the groove area is D1, and the thickness of the protruding area is D2, wherein D2-D1 is more than or equal to 4 microns and less than or equal to 10 microns. Alternatively, the thickness of the groove region is D1 and 15 μm≤D1≤18 μm, and the thickness of the projection region is D2 and 22 μm≤D2≤25 μm in the thickness direction of the battery blue film. Alternatively, the thickness of the substrate layer is D3 and is 85 μm≤D3≤90 μm along the thickness direction of the battery blue film, and the thickness of the battery blue film after hot pressing is D4 and is 108 μm≤D4≤112 μm. Optionally, the projected area of each convex area on the substrate layer along the thickness direction of the cell blue film is S and 0.1mm 2≤S≤1mm2, and the width of the groove area is L and 0.1 mm≤L≤0.5 mm. Optionally, the shape of the raised area is an equilateral polygon. Optionally, the shape of the raised area is an equilateral triangle, square or diamond. Optionally, the battery blue film includes a first heating region and a second heating region disposed outward from a center. Optionally, the battery blue film comprises a first heating area and a second heating area which are distributed from one end to the other end in sequence. Another object of the present utility model is to provide a battery, which can reduce the generation of bubbles or bulges between the battery body and the battery blue film when the battery body is coated with the blue film, and can avoid the generation of a large-area adhesive residue on the surface of the battery body when the battery body needs to be re-torn and returned, and can ensure the adhesive effect between the battery blue film and the battery body and improve the production efficiency. The technical scheme adopted by the utility model is as follows: The battery comprises a battery body and the battery blue film, wherein the battery blue film is coated on the battery body, and the battery blue film is fixedly bonded with the battery body. The beneficial effects of the utility model are as follows: The battery blue film comprises a substrate layer and an adhesive layer, wherein the adhesive layer is attached to one side surface of the substrate layer, the adhesive layer comprises a plurality