Battery top cover structure

Abstract

The invention discloses a battery top cover structure, which comprises: a top cover plate, which is provided with a positive electrode column installation hole, a negative electrode column installation hole, a first limiting part surrounding the positive electrode column installation hole, and a second limiting part surrounding the negative electrode column installation hole; wherein the positiveelectrode column is suitable for being matched in the positive electrode column installation hole, the negative electrode column is suitable for being matched in the negative electrode column installation hole, and third limiting parts are formed on the positive electrode column and the negative electrode column; two pieces of upper insulating plastic, which are arranged between the positive electrode column and the first limiting part and between the negative electrode column and the second limiting part respectively, and a first limiting groove matched with the first limiting part or the second limiting part is formed in the side, facing the first limiting part or the second limiting part, of each piece of the upper insulating plastic; and second limiting grooves matched with the third limiting parts are formed in one sides, facing the third limiting parts, of the two pieces of upper insulating plastic. The battery top cover structure provided by the embodiment of the invention has the advantages of simple structure, convenient installation, difficulty in micro short circuit and firm assembly of the positive and negative electrode columns.

Description

technical field [0001] The invention relates to the field of electronic batteries, in particular to a battery top cover structure. Background technique [0002] In the prior art, the fixing of the positive and negative poles of the battery top cover is generally realized by riveting the connection structure on the upper and lower surfaces of the top cover sheet, and sealing rings, insulating plastics, ceramics, etc. are arranged on the top and bottom of the top cover sheet, and there are many components, so that There are many assembly processes in mass production, which are easy to cause micro-short circuit, the internal resistance value is not stable enough and the weight is large, which is not conducive to improving the energy density of the battery. There is also an electrode assembly under the top cover sheet, which affects the available space inside the battery; Under complex working conditions, the loosening of the electrodes leads to poor contact, which seriously aff...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the fixing of the positive and negative poles of the battery top cover is generally realized by riveting the connection structure on the upper and lower surfaces of the top cover sheet, and sealing rings, insulating plastics, ceramics, etc. are arranged on the top and bottom of the top cover sheet, and there are many components, so that There are many assembly processes in mass production, which are easy to cause micro-short circuit, the internal resistance value is not stable enough and the weight is large, which is not conducive to improving the energy density of the battery. There is also an electrode assembly under the top cover sheet, which affects the available space inside the battery; Under complex working conditions, the electrode loosens and leads to poor contact, which seriously affects the normal power supply. Therefore, it is necessary to provide a new pole-type lightweight battery top cover with high space utilization to solve the above problems

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