Alkaline storage battery, and method for producing alkaline storage battery

Patent metadata

Field	Value
Publication number	US-2015093618-A1
Application number	US-201414496717-A
Country	US
Kind code	A1
Filing date	Sep 25, 2014
Priority date	Sep 30, 2013
Publication date	Apr 2, 2015
Grant date	—

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.

First claim

What is claimed is:

1 . An alkaline storage battery comprising:
a spiral electrode group with a positive plate and a negative plate spirally wound with a separator interposed therebetween, wherein the separator comprises a plurality of sulfone group-containing regions, and 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.

2 . The alkaline storage battery according to claim 1 , wherein at least one of the plurality of sulfone group-containing regions is disposed between an outer periphery of the electrode group and a case storing the electrode group.

3 . The alkaline storage battery according to claim 1 , wherein the separator is one sheet-shaped article, and comprises a plurality of sulfone group-containing regions separated from one another in a longitudinal direction of the sheet-shaped article.

4 . The alkaline storage battery according to claim 1 , wherein at least one of the plurality of sulfone group-containing regions is formed on one surface of the separator, the region formed on the one surface being disposed to face the positive plate or the negative plate.

5 . The alkaline storage battery according to claim 1 , wherein some of the plurality of sulfone group-containing regions are disposed to face both the positive plate and the negative plate.

6 . The alkaline storage battery according to claim 1 , wherein at least one of the plurality of sulfone group-containing regions is provided at an end of the separator in the longitudinal direction.

7 . The alkaline storage battery according to claim 1 , wherein at least one of the plurality of sulfone group-containing regions other than the end are disposed on one side with substantially a center of the separator in the longitudinal direction as a boundary.

8 . The alkaline storage battery according to claim 7 , wherein at least one of the plurality of sulfone group-containing regions other than the end is disposed to face an inner periphery side of the positive plate.

9 . The alkaline storage battery according to claim 1 , wherein a total of areas of the plurality of sulfone group-containing regions is less than 30% of an area of the positive plate.

10 . A method for producing an alkaline storage battery, the method comprising:
layering a positive plate, a negative plate and a separator comprising a plurality of sulfone group-containing regions separated from one another such that the plurality of sulfone group-containing regions are disposed to face the positive plate or the negative plate.

11 . The method for producing an alkaline storage battery according to claim 10 , wherein the positive plate, the negative plate and the separator are spirally wound and layered.

Assignees

• Gs Yuasa Int Ltd

Inventors

• Kanemoto Manabu
• Kakeya Tadashi
• Kodama Mitsuhiro

Classifications

• H01M50/417

  Polyolefins · CPC title

• Y02P70/50

  Manufacturing or production processes characterised by the final manufactured product · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M2/162 Primary

  Electricity · mapped topic

• H01M2220/20

  Batteries in motive systems, e.g. vehicle, ship, plane · CPC title