Title:
LEAD-ACID BATTERY
Document Type and Number:
Japanese Patent JP3069289
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To lengthen the life by placing a fiber mat and a synthetic resin separator between a positive plate formed by filling a pasty positive active material in a grid substrate made of the specified alloy and a negative plate so that the fiber mat is faced to the positive plate.
SOLUTION: A glass fiber mat 3 is closely placed on both sides of a positive plate 1, a polyethylene separator 4 is stacked on the outside of the mat 3, and a negative plate 2 is stacked on the outside of the separator 4 between the positive plate 1 and the negative plate 2 to constitute an electrode plate group A. The positive plate 1 is manufactured by filling a pasty positive active material in a grid substrate cast with an alloy comprising 0.03-0.09wt.% Ca, 1.05-1.50wt.% Sn, and the balance lead. Since the lead grid substrate is easily cast from the specified Pb-Ca-Sn alloy, corrosion resistance is enhanced, a lead-acid battery having a long cycle life at high temperature can be obtained, and the life of the battery such as a car battery used under environment exposed to high temperature is lengthened.
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Inventors:
Shuichi Yabuki
Application Number:
JP12271196A
Publication Date:
July 24, 2000
Filing Date:
April 19, 1996
Export Citation:
Assignee:
Furukawa Battery Co., Ltd.
International Classes:
H01M4/14; H01M2/16; H01M2/18; H01M4/73; H01M10/12; (IPC1-7): H01M4/14; H01M2/16; H01M2/18; H01M4/73; H01M10/12
Domestic Patent References:
| JP714583A | ||||
| JP734555U | ||||
| JP5723868U |
Attorney, Agent or Firm:
Kazuo Kitamura