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Lithium battery cell soft packaging membrane and battery

A packaging film, lithium battery technology, applied in the direction of lithium batteries, secondary batteries, battery pack components, etc., can solve the problems of restricting the application and development of lithium ion batteries, and achieve the effect of ensuring performance, improving service life, and avoiding pollution

Active Publication Date: 2014-06-04
深圳市安博瑞新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current situation of the above-mentioned flexible packaging film restricts and limits the application and development of lithium-ion batteries, and a new flexible packaging film that solves the above problems is extremely needed

Method used

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  • Lithium battery cell soft packaging membrane and battery
  • Lithium battery cell soft packaging membrane and battery
  • Lithium battery cell soft packaging membrane and battery

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Embodiment Construction

[0024] see figure 2 , figure 2 It is a schematic structural diagram of a flexible packaging film for lithium battery cores provided in an embodiment of the present invention. The flexible packaging film for lithium battery cores provided in an embodiment of the present invention includes an isolation layer 1, an aluminum foil layer 2, and a sealing layer 3 arranged in sequence, wherein the aluminum foil layer A protective layer 4 is arranged between 2 and the sealant layer 3 .

[0025] Wherein, the isolation layer 1 may be a nylon layer or a polyester layer, and the isolation layer 1 and the aluminum foil layer 2 are bonded together through an adhesive layer (not shown in the figure).

[0026] Considering the performance of the packaging film, the embodiment of the present invention controls the thickness of the isolation layer 1 to be between 20 and 30 microns, the thickness of the aluminum foil layer 2 to be between 30 and 90 microns, and the thickness of the protective l...

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Abstract

The invention discloses a lithium battery cell soft packaging membrane and a battery, wherein the lithium battery cell soft packaging membrane comprises an isolating layer, an aluminum foil layer and a sealing compound layer which are arranged in sequence, and a protective layer is arranged between the aluminum foil layer and the sealing compound layer. Through the mode, the corrosive liquid of the battery can be prevented from infiltrating through the sealing compound layer and corroding the surface of the aluminum foil layer, the sealing compound layer on the surface of the aluminum foil layer can be prevented from falling, the battery does not leak liquid, and the service life of the packaging membrane can be prolonged; binder is not used between a heat seal layer and the aluminum foil layer, so that electrolyte is prevented from infiltrating the heat seal layer to contact with the binder and pollute the electrolyte, and the performance of the battery can be ensured.

Description

technical field [0001] The invention relates to the field of batteries, in particular to a lithium battery core soft packaging film and a battery. Background technique [0002] Aiming at the problem that lithium batteries packaged in metal hard shells (steel shells or aluminum shells) are easy to release gas during use, and the pressure increases will cause explosions. A new type of flexible packaging material, namely aluminum-plastic film, has been introduced on the market. This kind of flexible packaging film can expand to release pressure, thereby preventing explosion; and it is light in weight, which can produce lithium batteries with higher capacity; lithium batteries using flexible packaging films can produce thinner and wider lithium batteries than lithium batteries with metal hard cases battery, expanding the scope of use of lithium batteries. Therefore, lithium batteries using flexible packaging films are the main direction for the development of lithium batteries....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/02H01M10/052H01M50/105H01M50/124
CPCY02E60/122H01M10/052H01M10/0525H01M50/124Y02E60/10
Inventor 石保庆
Owner 深圳市安博瑞新材料科技有限公司
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