Battery condition detecting apparatus that detect cancellation of a polarization of a battery
First Claim
1. An apparatus for detecting a condition of a battery, the apparatus comprising:
- means for detecting discharging and charging current of the battery;
means for detecting whether or not a negative acceleration of the charging current of the battery changes in sign from negative to zero during charging of the battery based on the charging current detected by the discharging and charging current detecting means;
means for calculating an integrated charged capacity of the battery by integrating the charging current of the battery until the negative acceleration of the charging current changes in its sign from negative to zero during the charging of the battery;
means for controlling output electric power of an alternator, which is electrically connected to charge the battery so as to keep the discharging current of the battery constant during discharging of the battery that occurs following the charging of the battery; and
means for determining, when an integrated discharged capacity of the battery becomes equal to the integrated charged capacity, that charge polarization of the battery generated during the charging of the battery is cancelled.
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Abstract
There is provided a battery condition detecting apparatus which comprises: means for detecting a discharging and charging current from the battery; means for detecting whether or not a negative acceleration of charging current changes in its sign from negative to zero during charging of the battery based on a result of detecting the discharge current; means for calculating an integrated charged capacity of the battery by integrating an instantaneous charging current during charging of the battery; means for controlling an alternator mounted in an automotive vehicle so as to control an output electric power generated by the alternator such that a discharging current from the battery is kept to be constant; and means for determining that the charge polarization is cancelled, if the integrated discharged capacity becomes to be equal to the integrated charged capacity.
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Citations
6 Claims
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1. An apparatus for detecting a condition of a battery, the apparatus comprising:
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means for detecting discharging and charging current of the battery; means for detecting whether or not a negative acceleration of the charging current of the battery changes in sign from negative to zero during charging of the battery based on the charging current detected by the discharging and charging current detecting means; means for calculating an integrated charged capacity of the battery by integrating the charging current of the battery until the negative acceleration of the charging current changes in its sign from negative to zero during the charging of the battery; means for controlling output electric power of an alternator, which is electrically connected to charge the battery so as to keep the discharging current of the battery constant during discharging of the battery that occurs following the charging of the battery; and means for determining, when an integrated discharged capacity of the battery becomes equal to the integrated charged capacity, that charge polarization of the battery generated during the charging of the battery is cancelled. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification