H - Electricity – 02 – J
Patent
H - Electricity
02
J
H02J 7/00 (2006.01)
Patent
CA 2272393
The charging method includes providing a current to the battery pack, sensing battery temperature, determining temperature change rate, and disabling termination of the charging method based on a temperature-based scheme if the temperature change rate exceeds a first predetermined threshold within a first predetermined period of time. Termination of the charging method based on a temperature-based scheme may be re-enabled if the temperature change rate is less than a second predetermined threshold. Preferably the second predetermined threshold is equal to the first predetermined threshold. Alternatively, termination of the charging method based on a temperature-based scheme may be re-enabled after a second predetermined period of time has elapsed. Also disclosed herein is a battery charging method comprising providing a current to the battery pack, sensing battery temperature, determining temperature change rate, and suspending the current if the temperature change rate exceeds a first predetermined threshold within a first predetermined period of time. Current will be re-sent if the temperature change rate is less than a second predetermined threshold. Preferably the second predetermined threshold is equal to the first predetermined threshold. Alternatively, current will be re-sent after a second predetermined period of time has elapsed.
Black & Decker Inc.
Gowling Lafleur Henderson Llp
LandOfFree
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