SYSTEM AND METHOD FOR A RECHARGEABLE BATTERY
First Claim
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1. A method for a rechargeable battery comprising:
- applying a charge voltage to the rechargeable battery;
monitoring a battery voltage and a battery current of the rechargeable battery; and
identifying a top of charge condition when for a defined time period the battery voltage is within a voltage tolerance of the charge voltage and the battery current is within a current tolerance of a threshold current.
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Abstract
A method for a rechargeable battery is disclosed that includes applying a charge voltage to the rechargeable battery; monitoring a battery voltage and a battery current of the rechargeable battery; and identifying a top of charge condition when for a defined time period the battery voltage is within a voltage tolerance of the charge voltage and the battery current is within a current tolerance of a threshold current. Also disclosed is a rechargeable battery system.
13 Citations
26 Claims
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1. A method for a rechargeable battery comprising:
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applying a charge voltage to the rechargeable battery; monitoring a battery voltage and a battery current of the rechargeable battery; and identifying a top of charge condition when for a defined time period the battery voltage is within a voltage tolerance of the charge voltage and the battery current is within a current tolerance of a threshold current. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for a rechargeable battery comprising:
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applying a charge voltage to the rechargeable battery; monitoring a battery voltage and a battery current of the rechargeable battery; calculating a battery resistance from the battery voltage and the battery current; and identifying a top of charge condition when for a defined time period the battery voltage is within a tolerance of the charge voltage and the calculated battery resistance is greater than a threshold resistance. - View Dependent Claims (13, 14)
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15. A method for a rechargeable battery comprising:
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monitoring a battery voltage and battery current of the rechargeable battery; applying a charge voltage to the rechargeable battery at a voltage level that is greater than a float voltage of the rechargeable battery; reducing the charge voltage to the float voltage; and identifying a top of charge condition when for a defined time period the battery voltage is within a voltage tolerance of the float voltage and the battery current is within a tolerance of zero amps. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A rechargeable battery system comprising:
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means for applying a charge voltage to the rechargeable battery; means for monitoring a battery voltage and a battery current of the rechargeable battery; and means for identifying a top of charge condition when for a defined time period the battery voltage is within a voltage tolerance of the charge voltage and the battery current is within a current tolerance of a threshold current.
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26. A rechargeable battery system comprising:
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a rechargeable battery; a source configured to apply a charge voltage to the rechargeable battery; a voltage sensor configured to monitor a battery voltage of the rechargeable battery; a current sensor configured to monitor a battery current of the rechargeable battery; and a controller in communication with the voltage sensor and the current sensor, the controller configured to identify a top of charge condition of the rechargeable battery when for a defined time period the battery voltage is within a voltage tolerance of the charge voltage and the battery current is within a current tolerance of a threshold current.
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Specification