Oxidization-resistant nickel-hydrogen battery and fabrication method thereof

Abstract

The invention provides an oxidization-resistant nickel-hydrogen battery. The oxidization-resistant nickel-hydrogen battery comprises a battery shell, a battery cell and an electrolyte, wherein the battery cell and the electrolyte both are arranged in the battery shell, the battery shell comprises a steel shell, a metal plating layer covers each surface of the steel shell, an oxidization-resistantlayer covers the metal plating layer arranged outside the steel shell, and the oxidization-resistant layer comprises the constituents based on percent by mass: 70-78% of nickel acetate, 18-25% of complexing agent and 3-10% of surfactant. The invention also discloses a fabrication method of the oxidization-resistant nickel-hydrogen battery. The fabrication method comprises the following steps of forming the steel shell; fabricating the battery shell; fabricating the battery cell; assembling the battery; fabricating a hole sealing agent; fabricating a cleaning agent; performing oxidization-resistant cleaning; and performing formation. By arranging the metal plating layers, the steel shell can be effectively prevented from being corroded by the electrolyte; and the oxidization-resistant layerhaving high resistance covers the surface, in contact with the external environment, of the metal plating layer, thus, the metal plating layers can be effectively prevented from being scratched, andthe probability that the steel shell is oxidized and gets rust can be remarkably reduced.

Description

technical field [0001] The invention relates to a battery and a manufacturing method thereof, and specifically discloses an oxidation-resistant nickel-hydrogen battery and a manufacturing method thereof. Background technique [0002] Ni-MH batteries are made of two main materials, hydrogen storage alloy and spherical nickel hydroxide, with good performance, strong reliability, safety and pollution-free, good low temperature performance, fast charge and discharge, high discharge rate, long service life, etc. Excellent performance, the discharge capacity is 1.5 to 2 times that of nickel-cadmium batteries, and it has no pollution to the environment. [0003] During the production process of Ni-MH batteries, the battery case will be damaged and damaged to varying degrees. The damaged battery case is prone to oxidation and rust, which will affect the overall performance of the Ni-MH battery and shorten the life of the Ni-MH battery. The battery shell is used to accommodate the b...

AI Technical Summary

Problems solved by technology

[0003] During the production process of Ni-MH batteries, the battery case will be damaged and damaged to varying degrees. The damaged battery case is prone to oxidation and rust, which will affect the overall performance of the Ni-MH battery and shorten the life of the Ni-MH battery.

The battery shell is used to accommodate the battery cell and the electrolyte. The battery shell of the traditional Ni-MH battery is made of steel, and the electrolyte is corrosive to a certain extent, so the battery shell is easily corroded by the internal electrolyte; in addition, the battery is made of Afterwards, chemical conversion treatment is required. During the chemical conversion process, the battery case may be damaged to varying degrees, causing the exterior of the battery case to be extremely prone to oxidation and rust, resulting in unqualified products and reducing the pass rate of the final product.

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