H - Electricity – 02 – J
Patent
H - Electricity
02
J
320/10, 320/2.5
H02J 7/10 (2006.01) G01R 31/36 (2006.01) G06F 1/26 (2006.01) H01M 10/44 (2006.01) H01M 10/48 (2006.01) H02J 7/00 (2006.01) H02J 9/06 (2006.01) H01M 10/42 (2006.01)
Patent
CA 2022802
ABSTRACT OF THE DISCLOSURE In an exemplary fast charging system, a hand-held computerized terminal with rechargeable batteries therein may have volatile memory and other components requiring load current during charging. The system may automatically identify battery type and automatically adjust to different levels of load current. The battery temperature may be brought into a relationship to surrounding temperature such that by applying a suitable magnitude of current to the battery for a limited time, and observing any resultant temperature increase, any overcharge condition of the battery can be determined. For example, if the battery is found not to be in an overcharge state, a relatively high fast-charge rate may be safely applied while monitoring battery temperature. If the battery is initially in the overcharge state or reaches such a state during fast charge, the system may automatically dynamically control the current supplied to the battery such that battery temperature is maintained generally somewhat above ambient temperature, thereby maintaining the battery in an optimum state of charge and in readiness to provide a maximum duration of portable operation. .D86
Becker Ronald D.
Koenck Steven E.
Miller Phillip
Norand Corporation
Smart & Biggar
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