Production method of battery cover plate provided with explosion-proof structure

Abstract

The invention discloses a production method of a battery cover plate provided with an explosion-proof structure. The production method comprises installation of an electrode terminal and installation of the explosion-proof structure. The production method specifically comprises the following steps of preparing parts; punching on a cover plate body to form a vent hole and an electrode through hole; installing an explosion-proof valve body; installing a lower protection film structure; installing an explosion-proof membrane structure; installing an upper protection film structure; nesting an electrode sealing ring into an electrode column; installing lower ceramic; nesting the electrode column into the cover plate body; putting upper ceramic and a snap spring in sequence; and carrying out vertical encapsulation, sealing and stabilizing treatment on the electrode terminal. The invention provides the production method of the battery cover plate provided with the explosion-proof structure, the method has a simple process, each step is easy to control, the battery cover plate has good overall sealing property and insulating property, the leakage phenomenon cannot occur, the produced battery cover plate has stable explosion-proof property, the overall performance stability of a battery is improved, the reject ratio of the battery in a production process is reduced and the cost is saved.

Description

technical field [0001] The invention relates to the technical field of battery cover production, in particular to a method for producing a battery cover with an explosion-proof structure. Background technique [0002] Nowadays, electronic products have spread to various industries and fields, and are also a necessity for daily household. Due to the high capacity and load characteristics of lithium-ion steel-cased fully enclosed batteries and their batteries, lithium-ion batteries are widely used. With the continuous development of power technology, the current power battery has the advantages of small size, large capacity and high power. At present, the production method of the power lithium battery cover plate is to seal and insulate the electrode terminal and the cover plate body by injection molding. For the explosion-proof structure, a central positioning step hole is punched on the cover plate body, and then the stepped hole Welding or riveting the explosion-proof mem...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above technical problems, the present invention provides a method for manufacturing a battery cover plate with an explosion-proof structure, which solves the existing technical problems such as complex processing methods, easy liquid leakage, and unstable battery performance.

Images