SECONDARY CELL AND ASSEMBLY SEALING PLATE FOR SECONDARY CELL

Title:

SECONDARY CELL AND ASSEMBLY SEALING PLATE FOR SECONDARY CELL

Document Type and Number:

WIPO Patent Application WO/1998/001913

Kind Code:

A1

Abstract:

A secondary cell in which a flexible wiring board which has a through hole and is mounted with a safety circuit, an anode for controlled input-output and a cathode for safety circuit which respectively have gas vent holes and are in face contact with the upper surface of the wiring board, a PTC element which is in face contact with the lower surface of the wiring board, and a slitted valve body are united using inner gasket in one body. A sealing section is constituted at the central part by caulking a sub-filter which is welded to the valve body and has a through hole and the inner gasket at the periphery of a filter having a through hole. The cell can be handled similarly to the conventional single cell. When the gas pressure in the cell becomes abnormally high, the bursting of the cell is prevented by quickly discharging the gas.

Inventors:

IWAZONO YOSHINORI (JP)
MASUMOTO KENJIN (JP)
TSURUTANI SHINJI (JP)

Application Number:

PCT/JP1997/002363

Publication Date:

January 15, 1998

Filing Date:

July 08, 1997

Export Citation:

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Assignee:

MATSUSHITA ELECTRIC IND CO LTD (JP)
IWAZONO YOSHINORI (JP)
MASUMOTO KENJIN (JP)
TSURUTANI SHINJI (JP)

International Classes:

H01M10/48; H01M6/50; H01M10/0525; H01M50/583; (IPC1-7): H01M2/34

Foreign References:

JPH06215747A	1994-08-05
JPH087866A	1996-01-12
JPH0864197A	1996-03-08
JPH07254401A	1995-10-03
JPH0278151A	1990-03-19

Other References: