Battery charge cycle counter
First Claim
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1. An electronic counting device for counting the charge cycles accumulated on a multicell battery by monitoring for a corresponding reversal in polarity of the IR drop produced across a resistor in series with the cells of said multicell battery, said reversal in polarity resulting from the reversal in current flow through the battery between charge and discharge comprising:
- sensing means for sensing the IR drop produced across two points along the length of said resistor in series with the cells of said multicell battery,detecting means for detecting a first condition where said IR drop is of a predetermined polarity and has exceeded a predetermined minimum magnitude and a second condition where said IR drop has reversed from said predetermined polarity and has exceeded a predetermined minimum magnitude,counting means for incrementing a stored count upon a transition from said first condition to said second condition, said counting means thereby accumulating a count equal to the amount of charge cycles accumulated on said multicell battery,display means for providing a visual readout of the amount of charge cycles accumulated by said counting means.
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Abstract
An electronic counting device for counting the charge cycles accumulated on a battery. The counting device is mounted on a battery intercell connector and senses the reversal in current through the battery which corresponds to a charge cycle.
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Citations
20 Claims
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1. An electronic counting device for counting the charge cycles accumulated on a multicell battery by monitoring for a corresponding reversal in polarity of the IR drop produced across a resistor in series with the cells of said multicell battery, said reversal in polarity resulting from the reversal in current flow through the battery between charge and discharge comprising:
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sensing means for sensing the IR drop produced across two points along the length of said resistor in series with the cells of said multicell battery, detecting means for detecting a first condition where said IR drop is of a predetermined polarity and has exceeded a predetermined minimum magnitude and a second condition where said IR drop has reversed from said predetermined polarity and has exceeded a predetermined minimum magnitude, counting means for incrementing a stored count upon a transition from said first condition to said second condition, said counting means thereby accumulating a count equal to the amount of charge cycles accumulated on said multicell battery, display means for providing a visual readout of the amount of charge cycles accumulated by said counting means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. In a multicell battery having cells serially connected by intercell connectors of a predetermined length, an electronic counting device for counting the charge cycles accumulated on said multicell battery by monitoring for a corresponding reversal in polarity of the IR drop produced across one of said intercell connectors, said reversal in polarity resulting from the reversal in current flow through the battery between charge and discharge comprising;
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sensing means for sensing the IR drop produced across two points along the length of said intercell connector, detecting means for detecting a first condition where said IR drop is of a predetermined polarity and has exceeded a predetermined minimum magnitude and a second condition where said IR drop has reversed from said predetermined polarity and has exceeded a predetermined minimum magnitude, counting means for incrementing a stored count upon a transition from said first condition to said second condition, said counting means thereby accumulating a count equal to the amount of charge cycles accumulated on said multicell battery, display means for providing a visual readout of the amount of charge cycles accumulated by said counting means. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification