H - Electricity – 02 – J
Patent
H - Electricity
02
J
320/10
H02J 7/04 (2006.01) H01M 10/44 (2006.01) H02J 7/00 (2006.01)
Patent
CA 1292510
ABSTRACT "RECHARGEABLE BATTERY PACK AND CHARGER COMBINATION" A battery pack containing a rechargeable battery is detachable to a charger unit for charging under the control of a charging circuit in the charger unit. The battery pack includes a sensor output circuit which comprises a temperature sensor for sensing the temperature of the battery being charged. A voltage dividing resistor network is formed in the sensor output circuit and receives a constant current from the charging circuit upon attachment of the battery pack to the charger unit such that it provides an enable signal of a first voltage level to the charging circuit for allowing the charging of the battery at a first charge rate so long as the sensed battery temperature is below a predetermined reference level. When the sensed battery temperature exceeds the reference level, the voltage dividing resistor network responds to provide a stop signal of a second voltage level for inhibiting the charging at the first charge rate. Also included in the sensor output circuit is a hold circuit which holds to provide the stop signal to the charging circuit once the sensed temperature exceeds the reference level.
569824
Iwanaga Kouichi
Kitamura Masami
Nakamura Katsuji
Marks & Clerk
Matsushita Electric Works Ltd.
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