A kind of battery and its packaging method

Abstract

The present invention relates to a battery and a battery packaging method. The battery includes a battery cell, a metal sheet, and a front plastic cover and a rear plastic cover that are sealed and assembled at opposite ends of the battery cell, wherein the metal sheet is wound around the battery cell. And cover the area of ​​the cell except where the front plastic cover and the rear plastic cover are located, it is characterized in that the battery also includes an elastic reinforcement, and the elastic reinforcement has a first abutting portion, a second The abutting part and the first connecting section, the first connecting section has opposite first end and second end, the first end is connected with the first abutting part, the second end is connected with the second abutting part The holding portion is connected, and the first abutting portion abuts against the front plastic cover, and the second abutting portion abuts against the rear plastic cover. In the present invention, by virtue of the resisting effect of the first resisting part and the second resisting part of the elastic reinforcement and the supporting function of the connecting section, the collapse caused by the deformation of the metal sheet when the battery is impacted by an external force is prevented. Effectively improve the safety of battery packaging.

Description

technical field [0001] The invention relates to a combined battery, especially a combined battery with improved structural design aimed at the overall thickness of the battery structure and the safety of packaging. Background technique [0002] Under the premise of the same capacity, polymer lithium-ion batteries are widely used in mobile phones due to their small size, light weight, long cycle life (more than 1000 times), and no memory effect (can be used and charged without affecting performance). , Handheld computers, laptop computers, camcorders, DVD players, electric bicycles and automobiles and other products. At present, with the rapid development of ultra-thin mobile phones, PDAs, and laptops, it is bound to require polymer lithium-ion battery cells to maintain high capacity while developing towards a thinner and lighter appearance. It is known that the battery cells of polymer lithium-ion batteries belong to the flexible packaging structure, and the batteries need ...

AI Technical Summary

Problems solved by technology

[0005] However, there are following problems in the use of the battery 10 obtained by using the above-mentioned known method of packaging. For example, when the battery 10 is dropped or subjected to external impact, the metal sheet 15 is easily deformed due to its own insufficient rigidity and is separated from the front and rear plastic covers. , so that the metal sheet 15 collapses at the corners of the battery 10, and the collapse of the corners of the metal sheet 15 often leads to damage to the internal structure of the battery cell 11, thereby affecting the safety of the battery

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