ELEMENT FOR THERMAL FUSE, THERMAL FUSE AND BATTERY INCLUDING THE SAME

WIPO Patent Application WO/2004/031426

A1

A thermal fuse comprising a first insulating film fitted with a pair of metal terminals; a fusible alloy positioned above the first insulating film and connected to distal ends of the pair of metal terminals so as to lie therebetween; and a second insulating film positioned above the fusible alloy and fitted to the first insulating film so as to provide space between the first insulating film and the second insulating film. The fusible alloy consists of an Sn-Bi-In alloy comprising 20 to 39.5 wt.% of Sn, 11.5 to 31 wt.% of Bi and 49 to 68.5 wt.% of In. This fusible alloy does not contain Pb and Cd, so that leaching of Pb and Cd even after disposal thereof can be avoided.

Senda, Kenji (4-14-20-302, Miyuki Fukui-shi, Fukui, 910-0854, JP)
Mukai, Takahiro (2-3-19-102, Jinguhigashi Miyazaki-shi, Miyazaki, 880-0056, JP)
Izaki, Masatoshi (8-136, Niinazume Miyazaki-shi, Miyazaki, 880-0124, JP)

PCT/JP2003/012769

April 15, 2004

October 06, 2003

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MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (1006, Oaza Kadoma Kadoma-shi, Osaka, 571-8501, JP)
Senda, Kenji (4-14-20-302, Miyuki Fukui-shi, Fukui, 910-0854, JP)
Mukai, Takahiro (2-3-19-102, Jinguhigashi Miyazaki-shi, Miyazaki, 880-0056, JP)
Izaki, Masatoshi (8-136, Niinazume Miyazaki-shi, Miyazaki, 880-0124, JP)

C22C28/00; C22C30/04; H01H37/76; H01M2/34; H01M6/50; (IPC1-7): C22C30/00; H01H37/76; H01M2/34

Iwahashi, Fumio (Matsushita Electric Industrial Co. Ltd, 1006, Oaza Kadom, Kadoma-shi Osaka, 571-8501, JP)

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