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Aluminum shell battery thermal insulation protective film

A technology of aluminum shell battery and protective film, which is applied in the direction of pressure-sensitive film/sheet, film/sheet release liner, film/sheet adhesive, etc. Energy and heat preservation and other issues, to achieve the effect of strong heat insulation and heat preservation, which is beneficial to battery capacity

Inactive Publication Date: 2020-06-16
KUNSHAN BYE MACROMOLECULE MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But it does not have the function of energy storage and heat preservation. At present, the temperature environment control of the power battery is mainly through the external heating source, cold source or blasting, but this itself will consume the energy of the battery and affect the battery life.

Method used

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  • Aluminum shell battery thermal insulation protective film

Examples

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Effect test

Embodiment 1

[0022] see figure 1 , the present invention provides the following technical solutions: an aluminum shell battery heat preservation protective film, comprising a closed-cell foam layer 1, an energy storage layer 2, a plastic substrate 3, a pressure-sensitive adhesive layer 4 and a release film 5;

[0023] The closed-cell foam layer 1 is a polyethylene closed-cell foam material;

[0024] The energy storage layer 2 is a cross-linked polymer of hexamethylene diisocyanate and polyethylene glycol;

[0025] The plastic substrate 3 is one of polyethylene, polypropylene, polyvinyl chloride, polyolefin, polyester, and polyimide;

[0026] The pressure-sensitive adhesive layer 4 is one of silicone, polyurethane, polyacrylate, and rubber-type pressure-sensitive adhesives;

[0027] The release film 5 is one of a silicon release film or release paper, a fluorine release film or release paper, and a non-silicon and non-fluorine release film.

[0028] Specifically, the thickness of the clo...

Embodiment 2

[0035] see figure 1 , the present invention provides the following technical solutions: an aluminum shell battery heat preservation protective film, comprising a closed-cell foam layer 1, an energy storage layer 2, a plastic substrate 3, a pressure-sensitive adhesive layer 4 and a release film 5;

[0036] The closed-cell foam layer 1 is a closed-cell foam material of polyethylene or ethylene-propylene copolymer;

[0037] The energy storage layer 2 is a cross-linked polymer of HDI trimer and polyethylene glycol;

[0038] The plastic substrate 3 is polyethylene;

[0039] The pressure-sensitive adhesive layer 4 is one of silicone, polyurethane, polyacrylate, and rubber-type pressure-sensitive adhesives;

[0040] The release film 5 is one of a silicon release film or release paper, a fluorine release film or release paper, and a non-silicon and non-fluorine release film.

[0041] Specifically, the thickness of the closed-cell foam layer 1 is 20 μm.

[0042] Specifically, the t...

Embodiment 3

[0048] see figure 1 , the present invention provides the following technical solutions: an aluminum case battery thermal insulation protective film, comprising a closed-cell foam layer 1, an energy storage layer 2, a plastic substrate 3, a pressure-sensitive adhesive layer 4 and a release film 5;

[0049] The closed-cell foam layer 1 is one of closed-cell foam materials such as polyethylene, polypropylene, ethylene-propylene copolymer, polystyrene, and rubber;

[0050] The energy storage layer 2 is a cross-linked polymer of polyisocyanate and polyethylene glycol;

[0051] The plastic substrate 3 is one of polyethylene, polypropylene, polyvinyl chloride, polyolefin, polyester, and polyimide;

[0052] The pressure-sensitive adhesive layer 4 is one of silicone, polyurethane, polyacrylate, and rubber-type pressure-sensitive adhesives;

[0053] The release film 5 is one of a silicon release film or release paper, a fluorine release film or release paper, and a non-silicon and non...

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Abstract

The invention discloses an aluminum shell battery thermal insulation protective film which comprises a closed-cell foaming layer, an energy storage layer, a plastic base material, a pressure-sensitiveadhesive layer and a release film which are five layers. The closed-cell foaming layer is one of polyethylene, polypropylene, ethylene-propylene copolymer, polystyrene, rubber and other closed-cell foaming materials; the energy storage layer is a cross-linked polymer of polyisocyanate and polyethylene glycol; the plastic base material is one of polyethylene, polypropylene, polyvinyl chloride, polyolefin, polyester and polyimide. The thermal insulation protective film has a phase change energy storage function and a certain temperature adjusting function, and when the temperature of the battery rises, crystallized and melted solid-solid phase change occurs to absorb heat; when the temperature of the battery is reduced, crystallized solid-solid phase change occurs, and energy is released, so that the battery is in a relatively stable temperature environment, and the capacity of the battery is favorably exerted and the service life of the battery is favorably prolonged. In addition, theprotective film has good insulation and puncture resistance.

Description

technical field [0001] The invention belongs to the technical field of new energy materials, and in particular relates to a thermal insulation protection film for an aluminum shell battery. Background technique [0002] Lithium-ion batteries are afraid of cold and heat. When the temperature is too low, the capacity of the battery will decrease. When the temperature is too high, there will be more side reactions inside the battery, which will damage the service life of the battery. During the production process of aluminum shell batteries, a protective film of plastic substrate is generally wrapped on the surface of the aluminum shell to play the role of insulation protection. But it does not have the function of energy storage and heat preservation. At present, the temperature environment control of the power battery is mainly through the external heating source, cold source or blasting, but this itself will consume the energy of the battery and affect the battery life. Co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/38C09J7/29C09J7/40C09J7/26
CPCC09J2203/33C09J7/26C09J7/29C09J7/38C09J7/385C09J7/40
Inventor 喻四海车荣升施法宽
Owner KUNSHAN BYE MACROMOLECULE MATERIAL CO LTD
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