Gradient hemmed battery

Abstract

According to a gradient hemmed battery disclosed by the invention, a battery top shell, a shell sealing suite and a battery cell suite are arranged. In an actual application process, a plurality of hem groups are arranged, each hem group comprises a plurality of layers of hems, and the hem curvature of each layer of hem is gradually reduced or gradually increased. The layer of hem with the maximumhem curvature is used for jacking a sealing ring body to the step edge, namely, the layered hem with the maximum hem curvature is used for fastening the battery top shell to prevent relative displacement of the battery top shell relative to the battery shell and prevent the situation in which the height of the gradient hemmed battery is changed, the other layers of hems are combined and used forassisting in enhancing the structural force of the gradient hemmed battery, so that the structural stability of the gradient hemmed battery is enhanced, the gradient hemmed battery is not prone to deformation, and the service life of the gradient hemmed battery is greatly prolonged.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a gradient curling battery. Background technique [0002] At present, a battery refers to a cup, tank or other container or part of a composite container that contains an electrolyte solution and a metal electrode to generate an electric current, and is a device that can convert chemical energy into electrical energy. It has positive pole and negative pole. As technology advances, batteries generally refer to small devices that can generate electricity. Such as solar cells. The performance parameters of the battery mainly include electromotive force, capacity, specific energy and resistance. Using the battery as the energy source can obtain stable voltage, stable current, stable power supply for a long time, and a current that is little affected by the outside world, and the battery structure is simple, easy to carry, easy to charge and discharge, and is not affected by the ...

AI Technical Summary

Problems solved by technology

[0003] For existing batteries, in order to improve the safety performance of the battery and improve the stripping process of the battery sealing process, some battery manufacturers have partially crimped the battery. Although the above method can complete the sealing of the battery, it also improves the safety and explosion-proof performance of the battery. , but the structural stability of the battery after sealing is not strong

Due to the partial sealing method, the height of the battery is not easy to control, that is, the battery top case and the battery case in the battery are prone to relative displacement, and the battery top case is easy to come out of the battery case under certain conditions, for example, when the battery inside When the pressure is at a certain value, because the battery is partially sealed, the top case of the battery is easy to move relative to the battery case under the action of internal pressure, thereby causing damage to the battery; in addition, due to the weak structural stability of the partially sealed battery, the battery is easy to Deformation occurs, which leads to damage to the battery

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