Lithium battery core flexible packaging film and battery
A technology for packaging film and lithium batteries, which is applied in the direction of lithium batteries, secondary batteries, battery pack components, etc., can solve problems that limit the application and development of lithium-ion batteries, and achieve the effects of ensuring performance, avoiding pollution, and improving service life
Active Publication Date: 2016-09-28
深圳市安博瑞新材料科技有限公司
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- Abstract
- Description
- Claims
- Application Information
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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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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 core soft packaging film and a battery. Wherein, the lithium battery core flexible packaging film includes an isolation layer, an aluminum foil layer, and a sealing layer arranged in sequence, and a protective layer is arranged between the aluminum foil layer and the sealing layer. Through the above method, the present invention can prevent the corrosive liquid of the battery from infiltrating through the sealant layer to corrode the surface of the aluminum foil layer, ensure that the sealant layer on the surface of the aluminum foil layer does not fall off, the battery does not leak, and improve the service life of the packaging film; the heat seal layer No adhesive is used between the layers of the aluminum foil layer to prevent the electrolyte from polluting the electrolyte due to the penetration of the heat-sealed layer and contacting the adhesive to ensure the performance of the battery.
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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IPC IPC(8): H01M2/02H01M10/052H01M50/105H01M50/124
CPCH01M10/052H01M10/0525H01M50/124Y02E60/10
Inventor 石保庆
Owner 深圳市安博瑞新材料科技有限公司