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Packaging seal structure, preparation method of packaging seal structure and flexibly packaged cell

A soft packaging battery and packaging film technology, applied in structural parts, battery pack parts, battery boxes/jackets, etc., can solve problems such as being unsuitable for industrial mass production, and achieve the purpose of preventing external short circuits, reducing costs, and improving insulation effects. Effect

Active Publication Date: 2014-02-12
DONGGUAN AMPEREX TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in actual production, it is often necessary to cut the entire roll of packaging bags (formed with a required number of packaging and sealing structures) to the required size, so this one-by-one design is not suitable for industrial mass production

Method used

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  • Packaging seal structure, preparation method of packaging seal structure and flexibly packaged cell
  • Packaging seal structure, preparation method of packaging seal structure and flexibly packaged cell
  • Packaging seal structure, preparation method of packaging seal structure and flexibly packaged cell

Examples

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preparation example Construction

[0042]The method for preparing a package seal structure according to the second aspect of the present invention is used to prepare the package seal structure 1 according to the first aspect of the present invention, which includes the steps of: providing a package seal structure 1 to be processed, the package seal structure 1 to be processed includes Two layers of packaging film 11 heat-sealed together, each layer of packaging film 11 includes an insulating protection layer 111 located on the outside, a heat-sealing layer 112 located on the inside, and a core metal layer located between the insulating protection layer 111 and the heat-sealing layer 112 113 The end faces of the insulating protection layer 111, the core metal layer 113 and the heat-sealing layer 112 in the two-layer packaging film 11 are on the same plane (refer to Figure 7 and Figure 8 ); the end faces of the insulating protective layer 111, the core metal layer 113 and the heat-sealing layer 112 of the two-l...

Embodiment 1

[0053] The packaging seal structure 1 of the packaged soft packaged battery with the electric core 5 (refer to image 3 and Figure 4 , wherein the insulating protective layer 111 is nylon, the core metal layer 113 is aluminum, the heat-sealing layer 112 is polypropylene, and the thickness T of the packaging seal structure 1 is 150 μm) in the trimming of the two-layer packaging film 11 (refer to Figure 5 to Figure 8 ), the trimming method adopts the roller cutter 2 for trimming;

[0054] Place the end faces of the insulating protective layer 111, the core metal layer 113 and the heat-sealing layer 112 of the two-layer packaging film 11 after trimming in an corrosive solution so that the core metal layer 113 of each layer of packaging film 11 undergoes a corrosion reaction, The corrosion solution is 0.01mol / L hydrochloric acid solution, the reaction temperature is 25°C, and the reaction time is 10 hours (refer to Figure 9 and Figure 10 );

[0055] Ultrasonic cleaning is ...

Embodiment 2

[0057] Except following difference, all the other are with embodiment 1.

[0058] The difference from Example 1 is that

[0059] The corrosion solution for corrosion reaction is 10mol / L hydrochloric acid solution, and the reaction time is 5 seconds.

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Abstract

The invention provides a packaging seal structure, a preparation method of the packaging seal structure and a flexibly packaged cell. The packaging seal structure comprises two layers of packaging films heat-sealed together. Each one of the two layers of packaging films comprises an insulating protective layer located at the outer side, a heat-sealing layer located at the inner side, and a core metal layer located between the insulating protective layer and the heat-sealing layer. In each one of the two layers of packaging films, the core metal layer shrinks by corrosion so that the length of the core metal layer is shorter than those of the insulating protective layer and the heat-sealing layer. The packaging seal structure can improve insulating effects of edges of the packaging seal structure, prevent short circuit, is simply and effectively suitable for large-scale production and can improve cell energy density in the flexibly packaged cell.

Description

technical field [0001] The invention relates to the field of packaging, in particular to a packaging seal structure, a preparation method thereof, and a soft packaging battery. Background technique [0002] Most mobile consumer electronics are equipped with built-in power supplies now, and the built-in power supplies of these mobile consumer electronics usually use soft-package lithium-ion batteries. [0003] figure 1 It is a commonly used packaging and sealing structure for flexible packaging lithium-ion batteries. Each packaging film 11 of the packaging and sealing structure 1 of the battery cell 5 of the soft-packaged lithium-ion battery is usually composed of multiple layers of materials, including an insulating protective layer 111 located on the outside; a heat-sealing layer 112 located on the inside; and a core metal layer 113 located on the insulation layer. between the protective layer 111 and the heat-sealing layer 112 . After the packaging and sealing structure...

Claims

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Application Information

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IPC IPC(8): H01M2/02H01M50/145
CPCH01M50/10H01M50/116H01M50/124Y02E60/10
Inventor 陈绍宇游从辉方宏新李升高段栋张柏清
Owner DONGGUAN AMPEREX TECH