H - Electricity – 02 – J
Patent
H - Electricity
02
J
H02J 7/10 (2006.01) H02J 7/00 (2006.01)
Patent
CA 2115367
2115367 9305560 PCTABS00020 A charging system monitors the rate of change in battery voltage, adjusts the rate of charging, and checks the changes in battery voltage following adjustments in the rate of charging to observe a predetermined sequence of voltage changes that signifies when a battery is fully charged. The charging system determines the slope between consecutive battery voltage measurements. The charging system charges a battery at the full battery capacity in response to positive or zero voltage slope measurements and reduces the charging rate in response to negative voltage slope measurements. A nickel-cadmium battery is fully charged when at least one sequence of a negative slope, followed by a decrease in charging rate, then a positive or flat slope, followed by an increase in charge rate, and finally another negative slope is observed.
Leppo Lee E.
Rinkes Charles A.
Gowling Lafleur Henderson Llp
Telxon Corporation
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