CN214491900U

CN214491900U - Novel laminate film for laminate polymer battery

Info

Publication number: CN214491900U
Application number: CN202023213252.2U
Authority: CN
Inventors: 沈晓宇
Original assignee: Zhejiang Tony Electronic Co ltd
Current assignee: Zhejiang Tony Electronic Co ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-10-26
Anticipated expiration: 2030-12-28

Abstract

The utility model provides a novel laminate film for laminate polymer battery, includes heat-seal layer, metal-based layer, insulating layer, adhesive layer, first graphite heat dissipation layer, metallic coating, second graphite heat dissipation layer, protective layer, the composite film stacks gradually from inside to outside heat-seal layer, metal-based layer, insulating layer, adhesive layer, first graphite heat dissipation layer, metallic coating, second graphite heat dissipation layer, protective layer, first graphite heat dissipation layer with second graphite heat dissipation layer is equipped with evenly distributed's radiating groove, the radiating groove is followed first graphite heat dissipation layer with the border on second graphite heat dissipation layer extends to the middle part, first graphite heat dissipation layer with the middle part on second graphite heat dissipation layer is equipped with the louvre, the louvre with the radiating groove intercommunication, the louvre diameter is greater than the radiating groove width. The utility model discloses a heat dispersion compares traditional material and can obtain promoting by a wide margin, has guaranteed the safety and the life-span of battery.

Description

Novel laminate film for laminate polymer battery

Technical Field

The utility model relates to a battery packaging material technical field, especially a novel laminate film for laminate polymer battery.

Background

The aluminum-plastic composite film is a core material of the soft package battery, has the advantages of light weight, thin thickness, flexible appearance design and the like, and is widely applied to the fields of 3C consumer electronics, power batteries, energy storage and the like. The aluminum-plastic composite film is formed by compounding high-barrier aluminum foil and a plastic film with chemical resistance, heat resistance and flexibility. At present, lithium ion battery can produce high temperature after long-term use, and domestic because plastic-aluminum membrane extranal packaging material's limitation, difficult effectual heat dissipation is handled, and lithium cell electronic product uses for a long time and will generate heat and scald, and this kind of phenomenon can all appear from 3C class battery to power automobile battery group. The soft package aluminum plastic film for the lithium battery has heat resistance, but can not well dissipate heat, has the defects of battery life loss and even danger of explosion at high temperature when the battery generates heat and scalds for a long time.

Disclosure of Invention

The utility model aims at providing a novel laminate film for laminate polymer battery to solve the problem that proposes in the background art.

The technical solution of the utility model is that: a novel composite film for a soft package battery comprises a heat sealing layer, a metal base layer, an insulating layer, an adhesive layer, a first graphite heat dissipation layer, a metal coating layer, a second graphite heat dissipation layer and a protective layer, the composite film is sequentially laminated with the heat sealing layer, the metal base layer, the insulating layer, the adhesive layer, the first graphite heat dissipation layer, the metal coating, the second graphite heat dissipation layer and the protective layer from inside to outside, the first graphite heat dissipation layer and the second graphite heat dissipation layer are provided with heat dissipation grooves, the heat dissipation grooves extend to the middle part from the edges of the first graphite heat dissipation layer and the second graphite heat dissipation layer, heat dissipation holes are arranged in the middle of the first graphite heat dissipation layer and the second graphite heat dissipation layer and are communicated with the heat dissipation grooves, the diameter of the heat dissipation hole is larger than the width of the heat dissipation groove, the thickness of the first graphite heat dissipation layer is 15 mu-30 mu m, and the thickness of the second graphite heat dissipation layer is 10 mu-20 mu m.

Preferably, the thickness of the metal base layer is 5 to 40 μm

Preferably, the heat-seal layer has a thickness of 5 to 20 μm.

Preferably, the metal base layer is a metal foil made of any one of nickel, steel, aluminum alloy, and copper.

Preferably, the adhesive layer is an epoxy resin adhesive.

Preferably, the adhesive layer has a thickness of 5 to 10 μm.

Preferably, the insulating layer is LCP.

Preferably, the thickness of the insulating layer is 5 μm to 20 μm.

Preferably, the protective layer is PET.

Preferably, the thickness of the protective layer is 5 μm to 10 μm.

The utility model has the advantages that:

compared with the prior art, the utility model discloses a heat dispersion is compared traditional material and can be promoted by a wide margin, has guaranteed the safety and the life-span of battery.

Drawings

FIG. 1 is a schematic structural diagram of embodiments 1-3 of the present invention;

fig. 2 is a schematic view of a first graphite heat dissipation layer according to embodiments 1-3 of the present invention;

fig. 3 is a schematic view of a second graphite heat dissipation layer according to embodiments 1-3 of the present invention;

Detailed Description

The present invention will be further described with reference to the following embodiments in conjunction with the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Example 1, as shown in fig. 1 to 3, a novel composite film for a pouch battery comprises a heat sealing layer 1, a metal base layer 2, an insulating layer 7, an adhesive layer 3, a first graphite heat dissipation layer 4, a metal plating layer 5, a second graphite heat dissipation layer 6, and a protective layer 8, wherein the composite film sequentially laminates the heat sealing layer 1, the metal base layer 2, the insulating layer 7, the adhesive layer 3, the first graphite heat dissipation layer 4, the metal plating layer 5, the second graphite heat dissipation layer 6, and the protective layer 8 from inside to outside, the first graphite heat dissipation layer 4 and the second graphite heat dissipation layer 6 are provided with heat dissipation grooves 9, preferably, the heat dissipation grooves 9 can be distributed in a staggered manner, the heat dissipation grooves 9 extend from the edges of the first graphite heat dissipation layer 4 and the second graphite heat dissipation holes 6 to the middle portions, the middle portions of the first graphite heat dissipation layer 4 and the second graphite heat dissipation layer 6 are provided with heat dissipation holes 10, the heat dissipation grooves 9 are communicated with the heat dissipation holes 10, the diameter of the heat dissipation holes 10 is larger than the width of the heat dissipation grooves 9, the thickness of the first graphite heat dissipation layer 4 is 15 μm, and the thickness of the second graphite heat dissipation layer 6 is 10 μm.

Further, the thickness of the metal base layer 2 is 5 μm.

Further, the thickness of the heat-seal layer 1 was 5 μm.

Further, the metal base layer 2 is a metal foil made of any one of nickel, steel, aluminum alloy, and copper.

Further, the adhesive layer 3 is an epoxy resin adhesive.

Further, the adhesive layer 3 has a thickness of 5 μm.

Further, the insulating layer 7 is LCP.

Further, the thickness of the insulating layer 7 was 5 μm.

Further, the protective layer 8 is PET.

Further, the thickness of the protective layer 8 is 5 μm.

Example 2, as shown in fig. 1 to 3, a novel composite film for a pouch battery comprises a heat sealing layer 1, a metal base layer 2, an insulating layer 7, an adhesive layer 3, a first graphite heat dissipation layer 4, a metal plating layer 5, a second graphite heat dissipation layer 6, and a protective layer 8, wherein the composite film sequentially laminates the heat sealing layer 1, the metal base layer 2, the insulating layer 7, the adhesive layer 3, the first graphite heat dissipation layer 4, the metal plating layer 5, the second graphite heat dissipation layer 6, and the protective layer 8 from inside to outside, the first graphite heat dissipation layer 4 and the second graphite heat dissipation layer 6 are provided with heat dissipation grooves 9, preferably, the heat dissipation grooves 9 are distributed in a staggered manner, the heat dissipation grooves 9 extend from the edges of the first graphite heat dissipation layer 4 and the second graphite heat dissipation holes 6 to the middle portions, the middle portions of the first graphite heat dissipation layer 4 and the second graphite heat dissipation layer 6 are provided with heat dissipation holes 10, the heat dissipation grooves 9 are communicated with the heat dissipation holes 10, the diameter of the heat dissipation holes 10 is larger than the width of the heat dissipation grooves 9, the thickness of the first graphite heat dissipation layer 4 is 20 μm, and the thickness of the second graphite heat dissipation layer 6 is 15 μm.

Further, the thickness of the metal base layer 2 is 20 μm.

Further, the thickness of the heat-seal layer 1 was 15 μm.

Further, the adhesive layer 3 is an epoxy resin adhesive.

Further, the adhesive layer 3 has a thickness of 8 μm.

Further, the insulating layer 7 is LCP.

Further, the thickness of the insulating layer 7 was 10 μm.

Further, the protective layer 8 is PET.

Further, the thickness of the protective layer 8 is 8 μm.

Example 3, as shown in fig. 1 to 3, a novel composite film for a pouch battery comprises a heat sealing layer 1, a metal base layer 2, an insulating layer 7, an adhesive layer 3, a first graphite heat dissipation layer 4, a metal plating layer 5, a second graphite heat dissipation layer 6, and a protective layer 8, wherein the composite film sequentially laminates the heat sealing layer 1, the metal base layer 2, the insulating layer 7, the adhesive layer 3, the first graphite heat dissipation layer 4, the metal plating layer 5, the second graphite heat dissipation layer 6, and the protective layer 8 from inside to outside, the first graphite heat dissipation layer 4 and the second graphite heat dissipation layer 6 are provided with heat dissipation grooves 9, preferably, the heat dissipation grooves 9 are distributed in a staggered manner, the heat dissipation grooves 9 extend from the edges of the first graphite heat dissipation layer 4 and the second graphite heat dissipation holes 6 to the middle portions, the middle portions of the first graphite heat dissipation layer 4 and the second graphite heat dissipation layer 6 are provided with heat dissipation holes 10, the heat dissipation grooves 9 are communicated with the heat dissipation holes 10, the diameter of the heat dissipation holes 10 is larger than the width of the heat dissipation grooves 9, the first graphite heat dissipation layer 4 has a thickness of 30 μm and the second graphite heat dissipation layer 6 has a thickness of 20 μm.

Further, the thickness of the metal base layer 2 is 40 μm.

Further, the thickness of the heat-seal layer 1 was 20 μm.

Further, the adhesive layer 3 is an epoxy resin adhesive.

Further, the adhesive layer 3 has a thickness of 10 μm.

Further, the insulating layer 7 is LCP.

Further, the thickness of the insulating layer 7 was 20 μm.

Further, the protective layer 8 is PET.

Further, the thickness of the protective layer 8 is 10 μm.

Claims

1. The utility model provides a novel laminate film for laminate polymer battery which characterized in that: comprises a heat sealing layer (1), a metal base layer (2), an insulating layer (7), an adhesive layer (3), a first graphite heat dissipation layer (4), a metal coating (5), a second graphite heat dissipation layer (6) and a protective layer (8), wherein the composite film is sequentially laminated from inside to outside, the heat sealing layer (1), the metal base layer (2), the insulating layer (7), the adhesive layer (3), the first graphite heat dissipation layer (4), the metal coating (5), the second graphite heat dissipation layer (6) and the protective layer (8) are arranged, the first graphite heat dissipation layer (4) and the second graphite heat dissipation layer (6) are provided with heat dissipation grooves (9), the heat dissipation grooves (9) extend to the middle part from the edges of the first graphite heat dissipation layer (4) and the second graphite heat dissipation layer (6), heat dissipation holes (10) are arranged in the middle parts of the first graphite heat dissipation layer (4) and the second graphite heat dissipation layer (6), the heat dissipation holes (10) are communicated with the heat dissipation groove (9), the diameter of each heat dissipation hole (10) is larger than the width of the heat dissipation groove (9), the thickness of the first graphite heat dissipation layer (4) is 15-30 mu m, and the thickness of the second graphite heat dissipation layer (6) is 10-20 mu m.

2. The novel composite film for the soft package battery according to claim 1, is characterized in that: the thickness of the metal base layer (2) is 5-40 mu m.

3. The novel composite film for the soft package battery according to claim 1, is characterized in that: the thickness of the heat sealing layer (1) is 5-20 mu m.

4. The novel composite film for the soft package battery according to claim 1, is characterized in that: the metal base layer (2) is a metal foil and is made of any one of nickel, steel, aluminum alloy and copper.

5. The novel composite film for the soft package battery according to claim 1, is characterized in that: the adhesive layer (3) is an epoxy resin adhesive.

6. The novel composite film for the soft package battery according to claim 1, is characterized in that: the thickness of the adhesive layer (3) is 5-10 μm.

7. The novel composite film for the soft package battery according to claim 1, is characterized in that: the insulating layer (7) is LCP.

8. The novel composite film for the soft package battery according to claim 1, is characterized in that: the thickness of the insulating layer (7) is 5-20 mu m.

9. The novel composite film for the soft package battery according to claim 1, is characterized in that: the protective layer (8) is PET.

10. The novel composite film for the soft package battery according to claim 1, is characterized in that: the thickness of the protective layer (8) is 5-10 mu m.