Battery capacity calculator and method of calculating battery capacity
AssigneeLucent Technologies Inc.
InventorsCharles W. Berthoud, Mohd M. Hobbi, Lakshmi N. Jampanaboyana
Life of this patent
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Abstract
A system for, and method of, calculating a capacity of a rechargeable battery having an initial terminal voltage and a battery power supply incorporating the system or the method. In one embodiment, the system includes: (1) a dummy load couplable to the battery to initiate a battery discharge cycle of a given discharge rate and (2) a controller, coupled to the dummy load, that periodically collects, and generates an accumulation of, terminal voltage samples during the battery discharge cycle until the terminal voltage reaches a predefined terminating level, the capacity being a function of a magnitude of the accumulation.
Claims21
A system for calculating a capacity of a rechargeable battery having an initial terminal voltage, comprising:
- a dummy load couplable to said battery to initiate a battery discharge cycle of a given discharge rate;
- and
- a controller, coupled to said dummy load, that periodically collects, and generates an accumulation of, terminal voltage samples during said battery discharge cycle until said terminal voltage reaches a predefined terminating level, said capacity being a function of a magnitude of said accumulation.
A method of calculating a capacity of a rechargeable battery having an initial terminal voltage, comprising:
- initiating a battery discharge cycle of a given discharge rate;
- and
- periodically collecting, and generating an accumulation of, terminal voltage samples during said battery discharge cycle until said terminal voltage reaches a predefined terminating level, said capacity being a function of a magnitude of said accumulation.
A battery power supply, comprising:
- a rechargeable battery having an initial terminal voltage;
- and
- a system for calculating a capacity of said battery, including:
- a dummy load couplable to said battery to initiate a battery discharge cycle of a given discharge rate, and
- a controller, coupled to said dummy load, that periodically collects, and generates an accumulation of, terminal voltage samples during said battery discharge cycle until said terminal voltage reaches a predefined terminating level, said capacity being a function of a magnitude of said accumulation.
Dependencies are inferred from the claim text.