Alkaline storage battery, and method for producing alkaline storage battery

A storage battery and alkaline technology, applied in the field of alkaline storage batteries, can solve the problems of high cycle life characteristics, high efficiency discharge characteristics, high manufacturing cost of separators, and difficulty in fully sulfonating fibers, etc., and achieves the effect of excellent capacity preservation characteristics.

Active Publication Date: 2015-04-15
GS YUASA INT LTD
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the sulfonation treatment for introducing sulfonic groups, after immersing the separator in concentrated sulfuric acid, neutralization, washing with a large amount of water, and drying are performed, so the treatment is cumbersome and time-consuming.
Therefore, the production cost of the separator into which the sulfo group is introduced by sulfonation treatment etc. is high.
[0006] In addition, if the sulfonation treatment is performed, the carbon-carbon bond of the polyolefin fiber is cut, so the mechanical strength of the separator having the sulfo group tends to decrease.
[0007] Furthermore, even by sulfonation treatment, it is difficult to sulfonate sufficiently into the inside of the fiber, so the separator having a sulfo group has low liquid retention, and poor cycle life characteristics or high-efficiency discharge characteristics (Patent Document 1)

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Alkaline storage battery, and method for producing alkaline storage battery
  • Alkaline storage battery, and method for producing alkaline storage battery
  • Alkaline storage battery, and method for producing alkaline storage battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] The present invention will be described in detail below.

[0043] The separator according to the present invention is composed of a long sheet.

[0044] Examples of the sheet-like article include nonwoven fabrics made of fibers made of polyolefin-based resins such as polyethylene-based resins and polypropylene-based resins. Although this nonwoven fabric can be produced by, for example, a dry method, a wet method, a spunbond method, a melt blow method, or the like, it is preferably produced by a wet method from the viewpoint of compactness.

[0045] The separator according to the present invention is a separator having a sulfo group in a plurality of regions where the sheets are separated from each other.

[0046] With such a separator, the nitrogen-based impurities dissolved in the electrolytic solution can be efficiently captured by dispersing and forming regions having a sulfo group in the separator.

[0047] In the separator according to the present invention, sulf...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

An alkaline storage battery includes a spiral electrode group with a positive plate and a negative plate spirally wound with a separator interposed therebetween. The separator includes a plurality of sulfone group-containing regions. The plurality of sulfone group-containing regions are separated from one another in a winding direction, and disposed to face the positive plate or the negative plate.

Description

technical field [0001] The invention relates to an alkaline storage battery and a manufacturing method of the alkaline storage battery. Background technique [0002] Recently, high-power alkaline storage batteries such as nickel-metal hydride storage batteries and nickel-cadmium storage batteries have been used as power sources for electric vehicles, hybrid vehicles, electric bicycles, electric tools, and the like. [0003] As separators used in alkaline storage batteries, for example, nonwoven fabrics made of polyolefin fibers with excellent alkali resistance are used. However, due to the hydrophilicity of polyolefin fibers with alkaline electrolytes Since the aspect is poor, it is necessary to perform a hydrophilization treatment to improve the hydrophilicity. Therefore, nonwoven fabrics made of polyolefin fibers are used as separators for alkaline storage batteries after being subjected to various hydrophilization treatments such as sulfonation treatment, fluorine gas tr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H01M2/10H01M10/30H01M10/28H01M50/417
CPCH01M10/0431H01M2/162H01M2220/20H01M10/30H01M10/286H01M50/44H01M50/417Y10T29/49115Y02E60/10Y02P70/50
Inventor 金本学挂谷忠司儿玉充浩
Owner GS YUASA INT LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap