Button battery for improving utilization rate of radial space

Abstract

The invention discloses a button battery for improving the utilization rate of radial space, which comprises a metal housing and an electric core arranged in the metal housing, wherein the electric core comprises a positive plate and a negative plate. The button battery further comprises a cover plate arranged on the metal housing, wherein the cover plate and the metal housing have the same polarity, and the cover plate and the metal housing are welded into a whole by laser, so that the sealing property of the battery housing is more reliable. The outer side of the cover plate is provided witha convex cap, the cover plate and the cap are provided with an insulating piece therebetween which prevents a short circuit between the cover plate and the cap, one of the positive plate and the negative plate is electrically connected with the metal housing or the cover plate, the other of the positive plate and the negative plate is electrically connected with the cap, and the electric core andthe outside are only separated by the single-layer metal housing, so that the utilization rate of the radial space of the battery is improved. Meanwhile, the process of the button battery is simpler,the requirement of full-automatic production of the battery is met, the production efficiency of the battery is improved, and the qualification rate is also well guaranteed.

Description

technical field [0001] The invention relates to the field of button batteries, in particular to a button battery that improves radial space utilization. Background technique [0002] The shells of button batteries currently on the market are not integrated designs, and there is a technical problem of poor sealing reliability. For example, a button battery disclosed in application number 201920094848. The sealed sealing ring main body, through the R angle sealing technology of the shell, compresses the sealing ring body in an interference fit manner to realize the sealing function between the positive shell and the negative shell, but the measurement of the R angle by the existing technical means is not very accurate , the good sealing of the battery shell cannot be fully guaranteed, and there is a technical problem that the quality pass rate cannot be guaranteed. At the same time, looking at the circumferential direction of the battery, the outer ring of the battery is the p...

AI Technical Summary

Problems solved by technology

[0002] The shells of button batteries currently on the market are not integrated designs, and there is a technical problem of poor sealing reliability. For example, a button battery disclosed in application number 201920094848. The sealed sealing ring main body, through the R angle sealing technology of the shell, compresses the sealing ring body in an interference fit manner to realize the sealing function between the positive shell and the negative shell, but the measurement of the R angle by the existing technical means is not very accurate , the good sealing of the battery shell cannot be fully guaranteed, and there is a technical problem that the quality pass rate cannot be guaranteed. At the same time, looking at the circumferential direction of the battery, the outer ring of the battery is the positive shell, the inner ring is the negative shell, the positive shell and the negative shell There is also a sealing ring main body between them. This multi-layer structure occupies too much space in the radial direction of the battery, and there is a technical problem that the radial space cannot be fully utilized.

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