Apparatus and method for controlling a power source applicable to portable electronic equipment
First Claim
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1. An apparatus for controlling a battery, comprising:
- a memory which stores a realizable capacity and residual capacity of the battery, said realizable capacity of the battery corresponds to a maximum discharge capacity of the battery between a fully charged state and a prescribed discharged end state and said residual capacity value corresponds to a usable residual time for using the battery;
first means for detecting a discharged capacity value of the battery corresponding to a difference between the fully charged state and a final discharged state;
second means for detecting a prescribed low-battery state;
means for discharging the battery to the prescribed discharged end state after said second means for detecting detects said prescribed low-battery state; and
means for updating the battery information stored in the memory by setting the detected discharge capacity value equal to a latest realizable capacity value.
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Abstract
An apparatus and method for controlling a battery power source of an electronic device by resetting battery information stored in a memory. In addition, the battery is discharged until a battery voltage reaches a prescribed discharge end voltage, even when the power source supply to the device is switched from the battery to another source. The battery information includes a realizable capacity and a residual capacity of the battery. The realizable capacity is a parameter used for indicating a battery performance and the residual capacity is used for calculating a usable residual time of the device.
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Citations
26 Claims
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1. An apparatus for controlling a battery, comprising:
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a memory which stores a realizable capacity and residual capacity of the battery, said realizable capacity of the battery corresponds to a maximum discharge capacity of the battery between a fully charged state and a prescribed discharged end state and said residual capacity value corresponds to a usable residual time for using the battery; first means for detecting a discharged capacity value of the battery corresponding to a difference between the fully charged state and a final discharged state; second means for detecting a prescribed low-battery state; means for discharging the battery to the prescribed discharged end state after said second means for detecting detects said prescribed low-battery state; and means for updating the battery information stored in the memory by setting the detected discharge capacity value equal to a latest realizable capacity value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of controlling a battery, comprising the steps of:
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storing a realizable capacity and residual capacity of the battery, said realizable capacity of the battery corresponds to a maximum discharge capacity of the battery between a fully charged state and a prescribed discharged end state and said residual capacity value corresponds to a usable residual time for using the device; detecting a discharged capacity value of the battery corresponding to a difference between the fully charged state and a final discharged state; detecting a prescribed low-battery state; discharging the battery to the prescribed discharged end state after said step of detecting the low-battery state detects said prescribed low-battery state; and updating the battery information stored in the memory by setting the detected discharge capacity value equal to a latest realizable capacity value. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification