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Nickel hydrogen quick charging battery and its making method

A rechargeable battery, nickel metal hydride technology, applied in the manufacture of alkaline batteries, nickel batteries, battery electrodes, etc., can solve the problems of low safety performance, small charging current, long charging time, etc.

Inactive Publication Date: 2010-07-28
MCNAIR TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing Ni-MH secondary rechargeable battery can withstand a small charging current, takes a long time to charge, has low charging efficiency and low safety performance when charging with a large current

Method used

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  • Nickel hydrogen quick charging battery and its making method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The special Ni(OH) 2 , CoO, and nickel powder are mixed and stirred evenly according to the weight ratio of 100:6:6, and evenly coated on the substrate made of foamed nickel, and the positive electrode sheet is made through rolling, cutting, welding and other processes (because the positive electrode of the battery The manufacturing method of the plate is a well-known technology, and is not the focus of the present invention, so it will not be described in detail herein). .

[0023] Mix hydrogen storage alloy powder, acetylene black, and nickel powder in a weight ratio of 100:0.5:0.5, add an appropriate amount of binder and water, stir evenly, and evenly coat the nickel-plated steel strip, after drying, rolling, Cutting, welding and other processes to make the negative electrode sheet (because the manufacturing method of the negative electrode plate of the battery is a known technology and is not the focus of the present invention, so it will not be described in detail...

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PUM

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Abstract

The invention provides an Ni-MH fast charge battery which comprises an anode, a cathode, electrolyte and a battery separator; the anode comprises an active material, an additive and an adhesive; the active substance contains 3.7 to 4.3 percent of Zn<2+> and 1.3 to 1.7 percent of Co<2+> by weight proportion and is added with 6 percent of Ni(OH)2 of CoO by weight proportion; the additive is simple substance Ni which takes up 1 to 10 percent of total weight of Ni(OH)2; the electrolyte is two-element electrolyte consisting of two substances of KOH, NaOH or LiOH; the density of the electrolyte is 1.28g / ml, and molar concentration of OH<-> is 9.5mol / L. The Ni-MH fast charge battery can be charged with strong current in short time with high charging efficiency. The invention also provides a preparation method of the Ni-MH fast charge battery.

Description

technical field [0001] The invention relates to the field of secondary battery manufacturing, in particular to a nickel-metal hydride battery that can be charged quickly with a large current. Background technique [0002] Ni-MH battery is an early substitute product of Ni-Cd battery. The appearance of Ni-MH battery and Ni-Cd battery is similar, and the positive pole of Ni-MH battery is basically the same as that of Ni-Cd battery. They both use nickel hydroxide as the positive pole. The main difference is that The negative plate of the nickel-cadmium battery uses cadmium active material, while the nickel-metal hydride battery uses a high-energy hydrogen storage alloy as the negative electrode, so the nickel-metal hydride battery has greater energy. At the same time, nickel-metal hydride batteries are basically similar to nickel-cadmium batteries in terms of electrochemical characteristics, so nickel-hydrogen batteries can completely replace nickel-cadmium batteries in use wit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/28H01M10/30H01M4/24H01M4/62H01M10/26
CPCY02E60/124Y02E60/10Y02P70/50
Inventor 李中延李群杰陈华春
Owner MCNAIR TECH