Cathode piece of hydrogen-nickel battery, and method for fabricating hydrogen-nickel battery by using the cathode pieces

Abstract

Cathode piece includes long piece of single negative pole and short piece of single negative pole. Through connection basal body of negative pole, the method welds end of the long piece to the short piece so as to produce piece of dual negative poles. Small block of protective membrane with width being larger than width of the said connection basal body is welded to diaphragm corresponding to connection seam of piece of dual negative poles. Then, piece of dual negative poles, diaphragm, and positive pole are rolled into battery container. Hydrogen-nickel battery is assembled after injecting electrolyte, and installing seal ring of nut cap to the seal. The method could control and produce pole pieces with different thick nesses, and quantities of cathode active material. The method raises use ratio of cathode active material, reduces thickness of pole, and occupied volume, and raises efficiency for manufacturing battery.

Description

Technical field [0001] The invention relates to the manufacture of electrodes for batteries for directly converting chemical energy into electrical energy, and in particular to a nickel-hydrogen battery negative electrode sheet and a method for manufacturing the nickel-hydrogen battery using the same. Background technique [0002] Nickel-hydrogen battery is a new generation of high-energy alkaline secondary battery after cadmium-nickel battery. It has the characteristics of high capacity, high power, and pollution-free. It is one of the important development directions of secondary battery today. The structure of the existing AA-type hydrogen nickel battery with a single negative electrode is shown in Fig. 1, which is mainly composed of positive electrode plate 2, negative electrode plate 4, separator 3, battery case 5, electrolyte and cap sealing ring. The separator 3 completely wraps the positive electrode sheet 2 from the length direction and the width direction, and the negat...

AI Technical Summary

Problems solved by technology

[0003] A technical problem to be solved by the present invention is to overcome the defects of excess capacity and low utilization rate of the active material at the tail of the existing negative electrode, and propose a negative electrode sheet for a nickel-hydrogen battery from the aspects of internal structure and process improvement of the battery, which can not only improve The utilization rate of the negative electrode active material can improve the performance of the battery

[0004] Another technical problem to be solved by the present invention is to overcome the defects of excess capacity and low utilization rate of the active material at the tail of the existing negative electrode, and propose a hydrogen battery using the above-mentioned nickel-hydrogen battery negative plate from the aspects of internal structure and process improvement of the battery. A method for manufacturing a nickel battery, which can not only improve the utilization rate of the negative electrode active material, but also reduce the amount of the negative electrode active material on the basis of ensuring the performance of the battery, reduce the cost of the battery, and improve the performance of the battery

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