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Structural design of soft package for the core of lithium ion cell, and fabricating method

A technology of packaging structure and battery core, applied to the flexible packaging structure of polymer lithium ion battery core, the field of manufacturing this structure can solve the problem that the battery does not have multiple edge sealing, and achieve the effect of improving edge sealing performance

Inactive Publication Date: 2007-12-26
DANLIAN BATTERY SHENZHEN
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Problems solved by technology

[0005] However, the batteries in the prior art do not have the functions of multiple edge sealing and the function of folding the opposite side and the side intersecting the side with the side.

Method used

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  • Structural design of soft package for the core of lithium ion cell, and fabricating method

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0017] As shown in FIG. 3 (including FIG. 3(1), FIG. 3(2), FIG. 3(3) and FIG. 3(4)), there are four embodiments of the battery core flexible packaging structure of the present invention. As shown in Figure 3(1), a battery core flexible packaging structure is sealed with an aluminum-plastic composite packaging film, one side of which is used to embed the battery core 1 (see the shaded part in the drawing) and then folded in half, heat-sealed tab 2 The side of and 3 is the ear side A, and the sides intersecting with the ear side A are B and C. The part of the ear near the battery core is A1, and the part of the ear far away from the battery core is A2 (see Figure 2 for the parts A1 and A2 of the ear).

[0018] The components of the battery core flexible packaging structure in the accompanying drawings are described as follows:

[0019] 1---Batt...

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Abstract

Increasing width of sealed edge for pole ear side and folded side, and making multiple times of sealed edge raises performance for sealing edge markedly, and reduces risk of leaking electrolyte from sealing edges of battery. Folding sealed edge for pole ear side makes unchanged ratio between pole ear side and length of battery. The disclosed method gathers advantages of current batteries in soft package for the battery prepared by using the invention. Moreover, under condition of not changing side utilized by sealed edge of battery, the invention raises performance of sealed edge markedly.

Description

technical field [0001] The invention relates to a flexible packaging structure of a lithium ion battery core, in particular to a soft packaging structure of a polymer lithium ion battery core. The invention also relates to a method of manufacturing the structure. Background technique [0002] Polymer lithium-ion battery is a new type of rechargeable battery that uses soft packaging materials, is small in size, light in weight, safe and pollution-free. People are further improving the volume capacity ratio of the battery and improving the performance of the battery itself to meet market demand. [0003] Regarding the flexible packaging structure of lithium-ion battery cores, reference may be made to Chinese Patent No. ZL03137057.8 and Chinese Patent Application Publication No. CN1340444A (Application No. 00126905.4). [0004] Lithium-ion battery core flexible packaging is located in the outer casing of the battery to seal and protect the battery core. Suitable for lithium-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/40H01M10/38H01M2/02B65D85/88H01M10/058H01M10/0587H01M50/105
CPCY02E60/122Y02E60/10Y02P70/50
Inventor 薛志强黄揭旭谢德明冯灿芬利志伟林日晖黄文威冯干伟邱志云林汉民欧万强
Owner DANLIAN BATTERY SHENZHEN
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