Built-in maintenance-free cadmium nickel alkalescent accumulator

Abstract

A built-in maintenance-free Ni-Cd alkaline storage battery mainly comprises a positive plate, a negative plate, a spacer, a battery container, an assembling air plug, auxiliary parts and electrolyte. The storage battery is characterized in that: a pored absorption box with dehydrogenation catalyst arranged inside is also arranged above the electrolyte inside the battery container; the assembling air plug is preferably a valve-controlled assembling air plug. The adoption of the present invention can maintain the advantages of the prior Ni-Cd alkaline storage battery, improve charge efficiency by 20 percent, ensure discharge rate can meet the discharge requirements of a Ni-Cd alkaline storage battery at high, middle and low rate, and guarantee stable discharge voltage as well as safe and reliable quality. Liquid adding maintenance period can reach twenty times more than the prior Ni-Cd storage batteries, so as to realize the real maintenance exemption of Ni-Cd storage batteries.

Description

technical field [0001] The invention relates to a cadmium-nickel alkaline storage battery, in particular to a built-in maintenance-free cadmium-nickel alkaline storage battery. It is an improvement of the prior art. In addition to the characteristics of traditional nickel-cadmium alkaline batteries, this kind of battery also has the advantages of greatly extending the maintenance-free period of nickel-cadmium alkaline batteries. Background technique [0002] Nickel-cadmium alkaline batteries not only have a large output in the world today, but also have a wide range of applications. In addition to the electrolyte, the traditional cadmium-nickel alkaline battery generally has the following structure: (1) the positive and negative plates are filled or impregnated with the positive and negative active materials in the plate skeleton to make the positive and negative plates; (2) ) Separator: Use separators, isolation sticks (sheets), and diaphragms to separate the positive and...

AI Technical Summary

Problems solved by technology

The nickel-cadmium alkaline battery with this structure has many advantages such as solid structure, good mechanical and electrical resistance, long cycle life, and strong charge retention ability; however, the nickel-cadmium alkaline battery with this structure, due to the use of ordinary Vinylon non-woven fabric, the oxygen generated by the positive plate of the battery during the charging process will reach the negative electrode in large quantities to recombine, generate too much heat, the temperature of the electrolyte will rise, and the battery will pose a safety hazard; due to the use of traditional straight-through assembly gas The hydrogen and oxygen generated during the charging process of the battery run directly into the atmosphere through the gas plug, which is not conducive to the catalytic combination of hydrogen and oxygen on the absorber plate. At the same time, the carbon dioxide in the atmosphere will enter the battery through the straight-through assembly gas plug The interior reacts with the electrolyte, so that the electrolyte is carbonated, which will seriously affect the performance of the battery; because the absorption box is not used, the hydrogen and oxygen generated during the charging process of the battery directly escape from the inside of the battery and enter the atmosphere. There is no compensation for the loss of water in the battery. In order to ensure the safe and reliable use of the battery, the user needs to add purified water to the battery frequently, which greatly increases the user's use and maintenance costs, and the maintenance-free period of the battery is short.

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