Battery condition detection method
First Claim
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1. A battery condition detecting method comprising:
- setting a current required during standard discharge of a battery as a set current;
determining a battery voltage when said battery discharges said set current;
defining battery charge index numbers assuming that a first index number represents a time immediately after said battery discharges from a fullycharged level and a second index number represents a time when unserviceable battery voltage is reached; and
determining a battery charge index number between said first index number and said second index number based on said battery voltage determined by said battery voltage determining step at a time when said discharge current is said set current.
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Abstract
A battery condition detecting method is provided which includes the steps of setting a current required during standard discharge of a battery as a set current, detecting a discharge current and a voltage of the battery, determining a battery voltage when the battery discharges the set current based on the discharge current and the voltage of die battery, and projecting an actual voltage of the battery based on the battery voltage determined.
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Citations
13 Claims
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1. A battery condition detecting method comprising:
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setting a current required during standard discharge of a battery as a set current; determining a battery voltage when said battery discharges said set current; defining battery charge index numbers assuming that a first index number represents a time immediately after said battery discharges from a fullycharged level and a second index number represents a time when unserviceable battery voltage is reached; and determining a battery charge index number between said first index number and said second index number based on said battery voltage determined by said battery voltage determining step at a time when said discharge current is said set current. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 11, 12, 13)
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10. A battery condition detecting method as set forth in claime1, wherein said step of determining said battery voltage comprises:
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measuring an amount of charge to said battery and an amount of discharge from said battery; detecting said discharge current and said battery voltage of said battery when said amount of discharge after a charge to said battery exceeds said amount of charge; and projecting a battery voltage when said battery discharges said set current based on said discharge current and said battery voltage; and said battery charge index is based on said projected battery voltage and is indicative of a condition of said battery.
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Specification