鉛蓄電池用エキスパンド格子体の製造法 - Matsushita Electric Industrial Co., Ltd

Title:

鉛蓄電池用エキスパンド格子体の製造法

Document Type and Number:

Japanese Patent JP4069674

Kind Code:

B2

Abstract:

To reduce variations in the developed dimensions of an expanded grid for a lead-acid storage battery produced by reciprocal expanding, and restrain a short storage battery lifetime due to corrosion when the grid body is used as a positive electrode.

In a manufacturing method for expanded grid body for a lead- acid storage battery by a reciprocal expanding method using a die cutter 10 on which a plurality of processing blades are laid out in line, the die cutter 10 has the first blade B1for forming slits placed at a side edge of a lead alloy sheet and the second to Nth blades (N is a natural number not less than 3) laid out to form slits in a direction of an inside of the alloy sheet sequentially from the side edge, and a blade tip angle αkof the kth blade (2≤k≤N-1) except for the first blade B1and a blade tip angle αk+1of the (k+1)th blade are expressed as αk<αk+1.

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Inventors:

Yuki Masayoshi
Toshihiro Inoue

Application Number:

JP2002145834A

Publication Date:

April 02, 2008

Filing Date:

May 21, 2002

Export Citation:

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Assignee:

Matsushita Electric Industrial Co., Ltd

International Classes:

C22C11/06; H01M4/74; B21D31/04; H01M4/68

Domestic Patent References:

JP8273673A
JP57044428A
JP53014333A
JP52125457A

Attorney, Agent or Firm:

Fumio Iwahashi
Hiroki Naito
Daisuke Nagano

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