Title:
LEAD-ACID BATTERY
Document Type and Number:
Japanese Patent JPH01117272
Kind Code:
A
Abstract:
PURPOSE:To improve mechanical strength, storage performance, and cycle life by forming an electrode base board with a lead alloy containing no Sb or Ca and added with a specific weight ratio of Sn and Bi. CONSTITUTION:A Pb alloy containing no Sb or Ca and added with 0.2-3.0wt.% of Sn is further added with 0.005-0.2wt.% of Bi to form an electrode plate base body. This Pb-Sn-Bi alloy does not contain any metal such as Pb that deteriorates overdischarge characteristic. Also, the addition of Bi increases the mechanical strength. While the addition of Sn improves the overdischarge standing characteristic, the addition by 3% or more increases the cost. The more the Bi content within the range of 0.005-0.2wt.%, the more the increase in the mechanical strength. This makes it possible to obtain an electrode plate body excellent in mechanical strength, storage performance, and cycle life.
Inventors:
NOBEYAMA KOICHI
SAITO SHINJI
MIURA ASAHIKO
SAITO SHINJI
MIURA ASAHIKO
Application Number:
JP27423487A
Publication Date:
May 10, 1989
Filing Date:
October 29, 1987
Export Citation:
Assignee:
SHIN KOBE ELECTRIC MACHINERY
International Classes:
H01M4/68; (IPC1-7): H01M4/68
Domestic Patent References:
| JPS6051546A | 1985-03-23 |