Thermal switch disc for short circuit protection of batteries

Details Thermal switch disc for short circuit protection of batteries Thermal switch disc for short circuit protection of batteries

1989-04-27

1990-11-27

Reynolds, Bruce A.

Electrical resistors

Resistance value responsive to a condition

Magnetic field or compass

320 51, 338221, H01L 4300

Patent

active

049739360

ABSTRACT:
A protective device for one battery or serially arranged battery cells is adapted to fit between one battery and its terminal connector or between adjacent battery cells. The device incorporates a disk of positive temperature coefficient material having a pair of circular end faces for contact. The disk is supported by a ring adhesively joined thereto, the ring having a central axial opening to enable the button terminal of a battery cell to contact against the disk as the disk and battery cell are arranged in a single battery application or in serial contact with similar battery cells.

REFERENCES:
patent: 3467937 (1969-09-01), Norton
patent: 4255698 (1981-03-01), Simon
patent: 4327282 (1982-04-01), Nauerth
patent: 4426573 (1984-01-01), Fudickar et al.
patent: 4635026 (1987-01-01), Takeuchi

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