High temperature nickel-hydrogen battery

A nickel-metal hydride battery, high temperature technology, applied in the direction of nickel storage battery, alkaline storage battery, battery pack components, etc., can solve the problem of poor charging efficiency and achieve the effect of improving high temperature performance

Active Publication Date: 2015-10-21
MEIZHOU LIANGNENG NEW ENERGY SCI & TECHCO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The battery will generate gas during charging and discharging, but because the battery is a closed structure, the internal pressure of the battery needs to be maintained near normal pressure, so it is required that the negative electrode of the battery can quickly absorb and release hydrogen gas. Difference

Method used

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Embodiment Construction

[0015] The present invention will be further described below with reference to the accompanying drawings and in combination with preferred embodiments.

[0016] The present invention provides a high-temperature nickel-metal hydride battery, which includes a shell, an electric core and an electrolyte disposed in the shell in some specific embodiments; the electric core includes a positive electrode sheet, a separator, and In the negative electrode sheet, a plurality of first holes are distributed on the positive electrode sheet, and second holes having the same number as the first holes are distributed on the diaphragm, and each of the first holes completely covers one of the second holes, The area of ​​each of the first holes is greater than the area of ​​the corresponding covered second holes.

[0017] In the embodiments of the present invention, any battery with an ambient temperature higher than 45° C. can be called a high-temperature nickel-metal hydride battery.

[0018]...

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Abstract

The present invention discloses a high temperature nickel-hydrogen battery, comprising a housing, and an electrical core and an electrolyte disposed within the housing. The electrical core comprises a positive electrode sheet, a diaphragm and a negative electrode sheet, which are sequentially overlapped and wound together; a plurality of first holes are distributed on the positive electrode sheet; second holes in the same number as the first holes are distributed on the diaphragm; each first hole completely corresponds and covers a second hole; and each of first hole has a larger area than the corresponding overlapped second hole. The battery can accelerate the flow of gas within the battery, so that the negative electrode of the rapid absorbs gas to improve the charging efficiency of the battery.

Description

technical field [0001] The invention relates to a secondary battery, in particular to a high-temperature nickel-hydrogen battery. Background technique [0002] Since it was researched and successfully prepared in 1984, nickel-metal hydride batteries have been more and more widely used in daily life because of their excellent charge-discharge cycle performance and no environmental pollution. With the increasing use of Ni-MH batteries, more and more electrical appliances are required to be used at higher temperatures, such as emergency lights, electric tools, etc. The positive electrode active material of the Ni-MH battery is nickel hydroxide, and the negative electrode active material is hydrogen storage alloy powder. The battery will generate gas during charging and discharging, but because the battery is a closed structure, the internal pressure of the battery needs to be maintained near normal pressure, so it is required that the negative electrode of the battery can quic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/30H01M2/14H01M50/463
CPCH01M10/30H01M50/40Y02E60/10
Inventor 梁德声唐蔚曹胜龙苏杏华
Owner MEIZHOU LIANGNENG NEW ENERGY SCI & TECHCO
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