Thermal switch for battery protection

Details Thermal switch for battery protection Thermal switch for battery protection

1990-01-31

1991-12-03

Pellinen, A. D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Circuit interruption by thermal sensing

361103, 337407, 307144, 320 36, H02H 504

Patent

active

050704273

ABSTRACT:
Lithium batteries are protected from a runaway condition marked by over-current and high temperature by a temperature sensor having a thermally conductive housing in thermal contact with all the cells of the battery and containing a fusible column which melts when a limit temperature is reached to open a switch in series with the battery. The switch may be the same switch which activates the circuit.

REFERENCES:
patent: 2006810 (1935-07-01), Kunz
patent: 4144532 (1979-03-01), Boyd
patent: 4186366 (1980-01-01), McVey
patent: 4771270 (1988-09-01), Kelso

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