Battery state monitoring device and its method, and dischargeable capacity detecting method
First Claim
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1. A battery condition monitor for monitoring a condition of a battery, monitoring a capacity not to be discharged caused by an internal resistance of the battery.
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Abstract
A microcomputer 23 monitors a dischargeable capacity corresponding to a value by subtracting a capacity not to be discharged caused by an internal resistance of a battery from a charge capacity of the battery 13 based on outputs of a current sensor 15 and a voltage sensor 17.
22 Citations
19 Claims
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1. A battery condition monitor for monitoring a condition of a battery, monitoring a capacity not to be discharged caused by an internal resistance of the battery.
- 2. A battery condition monitor for monitoring a condition of a battery, comprising a dischargeable capacity detector for detecting a dischargeable capacity corresponding to a value of subtracting a capacity not to be discharged caused by an internal resistance of the battery from a charged capacity, and monitoring the condition of the battery based on said detected dischargeable capacity.
- 3. A battery condition monitor for monitoring a condition of a battery, comprising a charged capacity detector for detecting a charged capacity and a dischargeable capacity detector for detecting a dischargeable capacity corresponding to a value of subtracting a capacity not to be discharged caused by an internal resistance of the battery from the charged capacity of the battery, and monitoring the condition of the battery based on said detected charged capacity and said detected dischargeable capacity.
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8. A battery condition monitoring method of monitoring a condition of a battery comprising the step of monitoring a capacity not to be discharged caused by an internal resistance of the battery as a capacity not to be discharged from the battery.
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9. A battery condition monitoring method of monitoring a condition of a battery comprising the step of monitoring the condition of the battery based on a dischargeable capacity corresponding to a value of subtracting a capacity not to be discharged caused by an internal resistance of the battery from a charged capacity of the battery.
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10. A battery condition monitoring method of monitoring a condition of a battery comprising the step of monitoring the condition of the battery based on a charged capacity of the battery, and a dischargeable capacity corresponding to a value of subtracting a capacity not to be discharged caused by an internal resistance of the battery from the charged capacity.
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11. A method of detecting a dischargeable capacity of a battery comprising the step of obtaining the dischargeable capacity based on a value of subtracting a voltage drop caused by the internal resistance during discharging from an open-circuit voltage corresponding to a charged capacity of the battery.
Specification