Current interrupt device for secondary batteries

Chemistry: electrical current producing apparatus – product – and – With nonbattery electrical component electrically connected...

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429 61, H01M 200

Patent

active

058009370

ABSTRACT:
A secondary battery (100) includes a cell (110) having a positive terminal (115) and a negative terminal (120), a device (130, 140) for coupling the positive terminal (115) to the negative terminal (120) in response to swelling of the cell (100), and a fuse (125) coupled between the positive terminal (115) and the negative terminal (120) in response to swelling of the cell (110).
According to another aspect of the present invention, a secondary battery (700) has external contacts (150, 155) and includes a cell (110) having a positive terminal (115) and a negative terminal (120) that are coupled to the external contacts (150, 155) during normal cell operation. In response to swelling of the cell (110), a device (705, 720, 725, 730, 735) decouples at least one of the positive and negative terminals (115, 120) from at least one of the external contacts (150, 155) in response to swelling of the cell (110).

REFERENCES:
patent: 2876271 (1959-03-01), Cahoon
patent: 3811944 (1974-05-01), Liang et al.
patent: 4209571 (1980-06-01), Bessett et al.
patent: 4315364 (1982-02-01), Leffingwell
patent: 4452867 (1984-06-01), Conforti
patent: 5358798 (1994-10-01), Kleinert, III et al.

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