H - Electricity – 01 – M
Patent
H - Electricity
01
M
H01M 10/50 (2006.01) E04C 2/34 (2006.01) E04H 15/20 (2006.01)
Patent
CA 2126321
ABSTRACT OF THE DISCLOSURE The object of the invention is a battery heating device with a temperature sensor and at least one heating element in a liquid and acid-proof arrangement inside the battery. The heating element is a power transistor secured to a cooling plate which can be powered by the battery, the emitter of which is powered by a temperature control circuit when the battery temperature falls below a predetermined reference temperature and the battery voltage is higher than a lower threshold and lower than a higher threshold. A trigger circuit is fitted which responds to the rise in the battery voltage after the current in a user with a high current consumption has been switched off. The trigger circuit actuates a time circuit which conductively controls the power transistor for a set time if the battery voltage is under or at the lower threshold.
Braun Dieter
Marks & Clerk
LandOfFree
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