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Cylindrical nickel-hydrogen storage battery

A nickel-metal hydride storage battery, cylindrical technology, applied in the direction of alkaline storage battery, alkaline storage battery electrode, secondary battery, etc., can solve the problem of low discharge energy density and other problems

Inactive Publication Date: 2012-03-21
SANYO ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, according to the studies of the inventors of the present invention, it has been confirmed that in the cylindrical nickel-metal hydride storage battery proposed in the above-mentioned patent document 1, in the predetermined numerical range, that is, D / C is 16 to 24, C is 30 mm to 45 mm, and the battery capacity is In the numerical range of 4~7Ah, the discharge energy density of SOC20% relative to SOC50% is greatly reduced

Method used

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Embodiment Construction

[0034] Hereinafter, the embodiments of the present invention will be described in detail, but the present invention is not limited to this, and can be suitably modified and implemented within a scope that does not change the spirit.

[0035] 1. Nickel anode

[0036] (1) Sintered substrate

[0037] As the nickel sintered substrate, the substrate produced as follows was used. For example, nickel powder is mixed with methyl cellulose (MC) as a thickener, polymer hollow microspheres (for example, small spheres with a pore diameter of 60 μm), and water, and kneaded to prepare a nickel slurry. Then, nickel paste is coated with a predetermined thickness on both sides of the punching metal formed of nickel-plated steel sheet, and then heated at 1000°C in a reducing environment to make the coated thickener and polymer hollow microspheres disappear. And the nickel powder is sintered to produce it. Here, the nickel sintered substrate α is made so that the thickness after sintering is 0.36 mm...

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Abstract

The invention is directed to provide a cylindrical nickel-hydrogen storage battery having high discharge power densities both at SOC 50% and at SOC 20%. In an alkaline storage battery according to an embodiment of the invention, a nickel positive electrode formed into a rectangular shape has a short side length of X and a long side length of Y, the ratio (Y / X) of the long side length to the short side length is 25 or more and 40 or less (25<=Y / X<=40), the short side length is 25 mm or more and 45 mm or less (25 mm<=X<=45 mm), and the battery capacity is 3 Ah or more and 7 Ah or less.

Description

Technical field [0001] The present invention relates to alkaline batteries suitable for use in vehicles such as hybrid electric vehicles (HEV) and electric vehicles (PEV). In particular, it relates to a nickel positive electrode filled with a positive electrode active material and formed into a rectangular shape, and a negative electrode active material filled and formed into a rectangular shape The negative electrode, the spiral electrode group formed by the rectangular separator and the alkaline electrolyte are housed in a sealed cylindrical nickel-hydrogen storage battery in a battery container. Background technique [0002] In recent years, secondary batteries have been used in many branches, such as mobile phones, personal computers, power tools, hybrid vehicles (HEV), and electric vehicles (PEV), and alkaline batteries are used for these applications. Among them, especially in alkaline batteries used in vehicles such as hybrid electric vehicles (HEV) and electric vehicles (...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/24H01M4/32H01M10/26
CPCY02E60/124C01B3/0057H01M4/383H01M4/242H01M10/345Y02E60/327H01M2300/0014Y02E60/10Y02E60/32
Inventor 杉井裕政越智诚西田晶北冈和洋
Owner SANYO ELECTRIC CO LTD
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