Electricity: battery or capacitor charging or discharging – Battery or cell charging – With thermal condition detection
Patent
1996-09-24
1998-05-05
Wong, Peter S.
Electricity: battery or capacitor charging or discharging
Battery or cell charging
With thermal condition detection
320155, H02J 704, G01N 272116
Patent
active
057479704
ABSTRACT:
A circuit (103) for charging a battery (101) is connected to an input (126) for inputting a signal indicative of a temperature of the battery. A switch (108) selectively supplies power to the battery under the control of a control signal. A microcontroller (140) calculates a rate of change of the temperature signal and stores a peak rate of change during a battery charging interval. The microcontroller is operable to control the switch to disable charging of the battery when the temperature rate of change drops below the peak value by a rate of change threshold amount.
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Gilot Monefax Joseph
Johnson, Jr. Robert Michael
Motorola Inc.
Toatley , Jr. Gregory J.
Vaas Randall S.
Wong Peter S.
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