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Patent Searching and Data


Title:
MANUFACTURING METHOD OF GRID FOR LEAD ACID STORAGE BATTERY
Document Type and Number:
Japanese Patent JP2008071619
Kind Code:
A
Abstract:

To provide a lead acid storage battery having a current collector manufactured by machining process in which welding reliability between a current collecting ear and a strap and productivity can be improved.

The manufacturing method of a grid having a current collecting ear with a thick portion is provided with a process in which a lead or lead alloy sheet having a first thick portion 21 to form a current collecting ear and a second thick portion thinner than the first thick portion is formed, a process in which the second thick portion is expansion or punching worked to obtain a grid precursor sheet, and a process in which the grid precursor sheet is cutting worked.


Inventors:
Funato, Takayuki
Application Number:
JP2006000249149
Publication Date:
March 27, 2008
Filing Date:
September 14, 2006
Export Citation:
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Assignee:
GS YUASA CORPORATION:KK
International Classes:
H01M4/74; B21D31/04; H01M4/82