Apparatus for measuring remaining capacity of a battery
First Claim
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1. A battery remaining capacity measuring apparatus comprising:
- first means for collecting values of a plurality of voltages of a battery and values of a plurality of currents passing through a load during a first time period occurring before a start of continuous running of said load;
second means coupled to said first means for obtaining a line corresponding to said values of said plurality of voltages and said values of said plurality of currents, said line showing a relationship between voltage and current from a plurality of points within a range from a first point near where voltage begins to decrease sharply during said first time period to a second point near a minimum voltage occurring during said first time period;
third means coupled to said second means for finding an initial remaining capacity voltage at which a reference current value intersects said line; and
fourth means coupled to said third means for displaying said initial remaining capacity voltage.
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Abstract
A battery remaining capacity measuring apparatus including a remaining capacity operation portion 3 for collecting a voltage of a battery 3 and a current passing through a load until an accelerator is on when turning an accelerator on and once turning an accelerator off after starting an ignition, obtaining a line from 2 points having a strongest relationship between the voltage and the current, and displaying an initial remaining capacity according to this line and a reference value.
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Citations
2 Claims
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1. A battery remaining capacity measuring apparatus comprising:
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first means for collecting values of a plurality of voltages of a battery and values of a plurality of currents passing through a load during a first time period occurring before a start of continuous running of said load; second means coupled to said first means for obtaining a line corresponding to said values of said plurality of voltages and said values of said plurality of currents, said line showing a relationship between voltage and current from a plurality of points within a range from a first point near where voltage begins to decrease sharply during said first time period to a second point near a minimum voltage occurring during said first time period; third means coupled to said second means for finding an initial remaining capacity voltage at which a reference current value intersects said line; and fourth means coupled to said third means for displaying said initial remaining capacity voltage. - View Dependent Claims (2)
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Specification