Combinational battery

Abstract

The invention relates to a combinational battery. The combinational battery comprises a cell assembly and a first shell, wherein the first shell covers the outer surface of the cell assembly and comprises a first substrate, a first side wall and a second side wall; the first side wall extends from a first edge of the first substrate along a first direction, and the first direction is vertical to the direction of the first substrate; the second side wall extends from a second edge of the first substrate along the first direction, the first edge and the second edge are arranged on different sides of the first substrate and adjacent to each other, the first side wall is adjacent to the second side wall and connected with the second side wall, the first side wall is provided with a first connecting part, the first connecting part is provided with a first through hole which runs through from the outer side of the first connecting part to the inner side of the first connecting part, so that the first side wall is partially connected with the second side wall. The connecting part is arranged between the side walls of the shell, so that the side walls are partially connected with each other, the upwarp and deformation of the side walls of the shell when the battery is impacted by an external force can be avoided, and the packaging safety of the battery can be improved.

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 battery cells n...

AI Technical Summary

Problems solved by technology

[0007] The above-mentioned way of realizing battery packaging through the cooperation of metal plates and plastic frames has the following problems: 1) the plastic frame itself has a certain thickness, which increases the overall thickness of the battery structure, which deviates from the development needs of light and thin; 2) the metal plate side There are discontinuous fitting pieces on the side. When the battery is subjected to external impact, the fitting pieces are easily deformed and lifted, which affects the safety of the packaging.

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