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US 6,307,377 B1Granted
Battery charge determination
AssigneeDell USA, L.P.
InventorsJohn A. Cummings, Barry K. Kates
Life of this patent
Estimating the term…
Abstract
A battery charge determination device including at least one battery cell voltage measurement device, at least one battery cell internal resistance measurement device, and at least one battery charge assessment device operably connected to the at least one battery cell voltage measurement device and the at least one battery cell internal resistance measurement device.
Claims29
A method of determining the capacity of a battery, the method comprising:
- (a) applying a first voltage to the battery during a first interval;
- (b) acquiring battery operational data during the first interval;
- (c) applying a second voltage to the battery during a second interval;
- (d) acquiring battery operational data during the second interval;
- (e) determining a value of a first battery characteristic from the battery operational data that is acquired during the first interval;
- and
- (f) determining a value of a second battery characteristic from the battery operational data that is acquired during the second interval.
4 more elements
A battery charge determination device comprising:
- first means for applying a first signal level to a battery during a first interval and for applying a second signal level to the battery during a second interval;
- second means for determining a value of a first battery characteristic from battery operational data acquired during the first interval;
- third means for determining a value of a second battery characteristic from battery operational data acquired during the second interval;
- and
- a memory device that stores battery charge data that corresponds to values of the first battery characteristic and values of the second battery characteristic.
2 more elements
A computer system comprising;
- a processor;
- power management means coupled to the processor for monitoring a battery condition and responding thereto;
- and
- a battery charge determination device coupled to the power management means, the battery charge determination device COMPRISING:
- first means for applying a first signal level to a battery during a first interval and for applying a second signal level to the battery during a second interval;
- second means for determining a value of a first battery characteristic from battery operational data acquired during the first interval;
- third means for determining a value of a second battery characteristic from battery operational data acquired during the second interval;
- and
- a memory device that stores battery charge data that corresponds to values of the first battery characteristic and values of the second battery characteristic.
6 more elements
Dependencies are inferred from the claim text.