Battery recharger using taper charge
First Claim
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1. A method of recharging a lead acid cell, comprising:
- applying to the cell through a power supply current, wherein said current declines as a function of increasing cell voltage; and
terminating or converting said current to a maintenance charge, wherein said function is a substantially straight line function, and wherein said function is defined as;
##EQU2## where;
I=second currentVp =fixed voltage of the power supplyVc =cell voltageR=impedance of a resistor in series with the cellx=a tolerance.
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Abstract
An electrochemical cell is recharged in series with a constant voltage source and a resistor, wherein the charging current declines as a function of increasing cell voltage. When the change in voltage of the battery with respect to time decreases to near zero, the changing cycle is ended or converted to a maintenance charge.
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Citations
9 Claims
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1. A method of recharging a lead acid cell, comprising:
- applying to the cell through a power supply current, wherein said current declines as a function of increasing cell voltage; and
terminating or converting said current to a maintenance charge, wherein said function is a substantially straight line function, and wherein said function is defined as;
##EQU2## where;
I=second currentVp =fixed voltage of the power supply Vc =cell voltage R=impedance of a resistor in series with the cell x=a tolerance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- applying to the cell through a power supply current, wherein said current declines as a function of increasing cell voltage; and
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9. A device for recharging a lead acid cell, comprising:
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means for applying to the cell through a power supply a current, said current declining as a function of increasing cell voltage; means for terminating or converting said current to a maintenance charge; said function being a substantially straight line function defined by ##EQU3## where;
I=second currentVp =fixed voltage of the power supply Vc =cell voltage R=impedance of a resistor in series with the cell x=a tolerance.
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Specification