Method for serially connecting square polymer batteries in length direction

Abstract

The invention discloses a method for serially connecting square polymer batteries in the length direction. In the process that a battery is manufactured and coiled, one tab faces up, the other tab faces down, the two tabs are respectively arranged on two sides of a coiled core body, and thus double sealing, side trimming and folding of the battery are implemented; for a final product of a single battery, the sealed top of the battery is folded up, the top and the bottom of the battery are fixed by using a brown high-temperature adhesive tape, and two sides of the battery are wrapped with high-temperature adhesive paper; the anodes and the cathodes are connected end to end, the anode (or cathode) of a previous battery is directly spot welding or tin soldering connection with the cathode (or anode) of a next battery, and no complex wiring connection is needed. The method has the advantages that as the tabs of the batteries are respectively arranged on two sides of the battery body, the anode (or cathode) of the previous battery is in direct spot welding or tin soldering connection with the cathode (or anode) of the next battery, and no complex wiring operation is needed, the operation of serially connecting two or more batteries is simple, convenient and rapid, and the appearance is attractive.

Description

technical field [0001] The invention relates to a square polymer battery, in particular to a method for connecting the square polymer battery in series in the longitudinal direction. Background technique [0002] Lithium-ion battery is a new type of high-performance storage battery that has developed rapidly in the past ten years. It is small in size, light in weight and high in energy density. , electric vehicles, satellite positioning systems and national defense expansion, lithium-ion batteries are a new generation of high-energy batteries with the most development prospects and market space. [0003] The conventional square polymer battery is a kind of lithium-ion battery. The positive and negative tabs on it are at the same end of the battery, and there is a top seal position of the battery. This position has the disadvantage that it is obviously thinner than the battery body. This battery The assembly in series in the length direction is generally completed by connect...

AI Technical Summary

Problems solved by technology

[0003] Conventional square polymer battery is a kind of lithium-ion battery. The positive and negative tabs on it are at the same end of the battery, and there is a top seal position of the battery. This position has the disadvantage that it is obviously thinner than the battery body. This kind of battery The assembly in series in the length direction is generally completed by wiring, but the more batteries in series, the more lines need to be connected, the operation is very cumbersome, and the efficiency is greatly reduced if production is not utilized.

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