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Temperature-sensing color-changing type aluminum plastic film capable of being used for battery

A technology of temperature-sensitive discoloration and aluminum-plastic film, which is applied in secondary batteries, battery pack components, applications, etc., and can solve problems such as lack of

Pending Publication Date: 2021-12-31
浙江锂盾新能源材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing aluminum-plastic film focuses on the protection of the battery inner core by the material, but there is still a lack of corresponding technical methods for the external sensing of the temperature change of the battery inner core during charging and discharging, and the establishment of a battery safety early warning mechanism

Method used

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  • Temperature-sensing color-changing type aluminum plastic film capable of being used for battery

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Embodiment Construction

[0017] In order to make the objects and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0018] like figure 1 As shown, the present invention provides a kind of aluminum-plastic film that can be used for temperature-sensitive discoloration of batteries, including a copolymerized polypropylene layer CPP (1), a first adhesive layer (2), an aluminum foil layer AL (3), a second adhesive layer (4), thermochromic layer (5), third adhesive layer (6), nylon layer PA (7).

[0019] The thickness of the copolymerized polypropylene layer is 15-60um, the thickness of the aluminum foil layer AL is 30-60um, the thickness of the thermochromic layer CPP is 15-60um, the thickness of the nylon layer PA is 15-60um, and the thickness of the copolymeriz...

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Abstract

The invention relates to a temperature-sensitive color-changing type aluminum plastic film for a battery. The aluminum-plastic film comprises a co-polypropylene layer CPP, an adhesive layer, an aluminum foil layer AL, an adhesive layer, a temperature-sensing color-changing layer, an adhesive layer and a nylon layer PA, wherein the co-polypropylene layer CPP, the adhesive layer, the aluminum foil layer AL, the adhesive layer, the temperature-sensing color-changing layer, the adhesive layer and the nylon layer PA are sequentially arranged from inside to outside. According to the invention, by utilizing the unique advantage of the temperature sensing discoloration layer composite film on temperature sensing discoloration, the internal temperature rise and temperature drop in the charging and discharging process of the battery can be intuitively and rapidly sensed through the change of the apparent color of the aluminum plastic film, so that the stable operation and danger early warning of the battery can be intuitively predicted. The temperature-sensing color-changing type aluminum plastic film not only can be used for soft package batteries and hard-shell batteries, but also can be used for decorating batteries.

Description

Technical field [0001] The invention relates to the field of battery packaging materials, and in particular to a temperature-sensitive color-changing aluminum-plastic film that can be used in batteries. Background technique [0002] In recent years, with the increase in lithium battery technology and production, the demand for lithium battery packaging materials is also increasing. In addition to the traditional steel shell or metal shell, soft-packed aluminum-plastic film is also an important way of battery packaging. , Aluminum-plastic film packaging materials have become the mainstream in the application and development of lithium battery packaging materials in the future. [0003] The traditional aluminum-plastic film is basically composed of an outer protective layer, a middle aluminum foil barrier layer and an inner heat-sealing layer. The layers are bonded with adhesive. The outer protective layer is generally made of nylon for composite. Now there are also options. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/32B32B27/34B32B27/30B32B27/20B32B27/08B32B15/20B32B15/085B32B15/082B32B7/12B32B33/00H01M50/129H01M10/48
CPCB32B27/32B32B27/34B32B27/304B32B27/306B32B27/20B32B27/08B32B15/20B32B15/085B32B15/082B32B7/12B32B33/00H01M50/129H01M10/486H01M10/488B32B2457/10B32B2307/4023B32B2307/4026B32B2307/31B32B2307/404Y02E60/10
Inventor 夏文进石亚丽章结兵
Owner 浙江锂盾新能源材料有限公司