Light and thin top cover assembly and battery

Abstract

The present invention relates to the technical field of battery manufacturing, and particularly discloses a light and thin top cover assembly and a battery. The light and thin top cover assembly comprises a top cover plate which is provided with mounting holes, and pole piece units which comprise conductive bodies positioned in the mounting holes and rubber rings positioned between the conductivebodies and the hole walls of the mounting holes. The hole walls of the mounting holes and the conductive bodies are fixedly connected with the rubber rings in an in-mold injection molding manner. Thelight and thin top cover assembly and the battery provided by the invention have the advantage of relatively small thickness of the pole piece units, and the energy density of the battery can be improved.

Description

technical field [0001] The invention relates to the technical field of battery manufacturing, in particular to a light and thin top cover assembly and a battery. Background technique [0002] see figure 1 , the top of the battery generally includes a pole piece assembly 1 and a top cover plate 2 . see Figure 2 ~ Figure 3 The pole piece assembly 1 generally includes an aluminum block 101 for connecting the electric core, a rubber part 102 for insulation and an aluminum ring 103 for welding with the top cover plate 2 from the inside to the outside. During production, the aluminum ring 103 is generally put into the lower mold first, then the aluminum block 101 is put into the lower mold, then the upper mold and the lower mold are pressed together, and finally the rubber is injected into the mold cavity, and the rubber can be cured. Obtain the pole piece assembly 1; take out the pole piece assembly 1, then put the sealing ring 3 and the pole piece assembly 1 into the pole pi...

AI Technical Summary

Problems solved by technology

[0004] Due to the reliable connection between the pole piece assembly 1 and the top cover plate 2 for convenience, the current pole piece assembly 1 is provided with an aluminum ring 103 (the aluminum ring 103 can be welded with the top cover plate 2), however, the role of the aluminum ring 103 It is only convenient to realize the welding with the top cover plate 2, and it is not beneficial to the performance of the battery. Moreover, since both the aluminum ring 103 and the top cover plate 2 are rigid parts, in order to achieve effective sealing, it is also necessary to seal the aluminum ring 103 A sealing ring 3 is arranged between the top cover plate 2, which greatly increases the thickness of the pole piece assembly 1. When the overall height of the battery remains the same, the thicker the pole piece assembly 1 is, the thicker the top cover assembly is. The smaller the volume that can be occupied, the lower the energy density of the battery

[0005] Therefore, it is necessary to improve the existing top cover assembly to solve the problem of its large thickness

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