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Long-life wide-temperature nickel-hydrogen battery

A nickel-metal hydride battery, longevity technology, applied in nickel batteries, battery electrodes, alkaline batteries and other directions, can solve the problems of poor low temperature performance, poor high temperature performance, unable to meet the requirements of use, etc., to achieve a wide operating temperature range and long service life , the effect of good charge-discharge performance and storage performance

Active Publication Date: 2012-06-27
麻城市众盈电源电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current high-temperature nickel-metal hydride batteries add titanium, yttrium, aluminum and other elements to the positive electrode material. Since this process cannot be made by wet method, it can only be made by dry method, so its low temperature performance is poor
However, the existing low-temperature batteries use neodymium-free hydrogen storage alloy materials. Although their low-temperature performance is good, their high-temperature performance is poor.
The working temperature of the Ni-MH battery produced in the prior art is still limited between -15°C and 45°C. With the widespread use of this product, the requirements for its working ability in a special temperature environment are getting higher and higher. Existing Ni-MH batteries are still unable to meet these usage requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Provided in this embodiment is a long-life and wide-temperature nickel-metal hydride battery, including a positive electrode sheet, a negative electrode sheet, a separator paper, an electrolyte, a sealing ring, a steel case and a cap, and the positive electrode sheet is composed of a substrate and a positive electrode material attached to the substrate , the positive electrode material is composed of high-temperature spherical nickel, cobalt element and its compound, yttrium oxide, manganese oxide, nickel powder, CMC, PTFE and purified water. The contents of each component are 81%, 4%, 0.6%, 3.8%, respectively. 0.7%, 0.2%, 3%, and 6.7%. The main material of the negative electrode material is a hydrogen storage alloy, the content of the hydrogen storage alloy is 86wt%, and the raw material of the hydrogen storage alloy is neodymium-free rare earth; the negative electrode material is added with 4wt% zinc oxide, 5.5wt% magnesium boride and 4.5wt% % graphite. The electroly...

Embodiment 2

[0021] Provided in this embodiment is a long-life and wide-temperature nickel-metal hydride battery, including a positive electrode sheet, a negative electrode sheet, a separator paper, an electrolyte, a sealing ring, a steel case and a cap, and the positive electrode sheet is composed of a substrate and a positive electrode material attached to the substrate , the positive electrode material is composed of high-temperature spherical nickel, cobalt element and its compound, yttrium oxide, manganese oxide, nickel powder, CMC, PTFE and purified water. The contents of each component are 88%, 2.5%, 1.8%, 0.9%, respectively. 3.8%, 0.1%, 1.9% and 1%. The main material of the negative electrode material is a hydrogen storage alloy, the content of the hydrogen storage alloy is 90wt%, and the raw material of the hydrogen storage alloy is neodymium-free rare earth; the negative electrode material is added with 2wt% zinc oxide, 4wt% magnesium boride and 4wt% graphite. The electrolyte is...

Embodiment 3

[0024] Provided in this embodiment is a long-life and wide-temperature nickel-metal hydride battery, including a positive electrode sheet, a negative electrode sheet, a separator paper, an electrolyte, a sealing ring, a steel case and a cap, and the positive electrode sheet is composed of a substrate and a positive electrode material attached to the substrate , the positive electrode material is composed of high-temperature spherical nickel, cobalt element and its compound, yttrium oxide, manganese oxide, nickel powder, CMC, PTFE and purified water. The contents of each component are 85%, 3.7%, 1.3%, 2.8%, respectively. 2.2%, 0.3%, 2%, and 2.7%. The main material of the negative electrode material is a hydrogen storage alloy, the content of the hydrogen storage alloy is 93wt%, and the raw material of the hydrogen storage alloy is neodymium-free rare earth; the negative electrode material is added with 1wt% of zinc oxide, 4wt% of magnesium boride and 2wt% of graphite. The elec...

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PUM

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Abstract

The invention discloses a long-life wide-temperature nickel-hydrogen battery. The long-life wide-temperature nickel-hydrogen battery comprises a positive plate, a negative plate, a diaphragm paper, electrolyte, a sealing ring, a steel shell and a nut cap, wherein the positive plate comprises a substrate and positive substances attached on the substrate; the negative plate comprises a substrate and negative substances attached on the substrate. The positive substances are added with yttrium oxide, manganese oxide and nickel powder, which are respectively 0.5-2wt%, 0.5-4wt% and 0.5-4wt% of the total mass of the positive substances; the negative substances are added with zinc oxide, magnesium borate and graphite, which are respectively 0.5-4wt%, 0.5-6wt% and 0.5-5wt% of the total mass of thenegative substances. With a wide working temperature range, the nickel-hydrogen battery can achieve good charge-discharge performances and storage performances with a temperature range of (-) 40 DEG C to 60 DEG C, and has a long service life, with charge-discharge cycle life more than 600 times.

Description

technical field [0001] The invention relates to a nickel-hydrogen battery, in particular to a nickel-hydrogen battery capable of normal charging and discharging in a wide temperature range. Background technique [0002] Ni-MH batteries have been quite mature after years of development, and are widely used because of their advantages such as high capacity ratio, no pollution, long service life, and wide operating temperature range. The current high-temperature nickel-metal hydride batteries add titanium, yttrium, aluminum and other elements to the positive electrode material. Since this process cannot be wet-processed, it can only be dry-processed, so its low-temperature performance is poor. However, the existing low-temperature batteries use neodymium-free hydrogen storage alloy materials, although their low-temperature performance is good, their high-temperature performance is poor. The working temperature of the Ni-MH battery produced in the prior art is still limited bet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/30H01M4/62H01M4/32
CPCY02E60/124Y02E60/10
Inventor 汪志强余旭东
Owner 麻城市众盈电源电子有限公司