Apparatus and method for predicting battery capacity and fitness for service from a battery dynamic parameter and a recovery voltage differential
First Claim
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1. A method of testing a storage battery, comprising:
- (a) measuring a dynamic parameter of the battery;
(b) obtaining an open circuit voltage of the battery;
(c) measuring a recovery voltage differential of the battery; and
(d) determining a condition of the battery as a function of the measured battery dynamic parameter, the open circuit voltage, the measured recovery voltage differential and a recovery voltage differential limit, which is a boundary condition for the recovery voltage differential.
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Abstract
A method and apparatus for testing a storage battery is provided in which a battery is measured to obtain a battery dynamic parameter value such as conductance. The battery is measured to obtain an open circuit voltage, a resistance and a recovery voltage differential. A condition of the battery is determined as a function of the measured battery dynamic parameter, the open circuit voltage and the recovery voltage differential.
465 Citations
20 Claims
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1. A method of testing a storage battery, comprising:
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(a) measuring a dynamic parameter of the battery; (b) obtaining an open circuit voltage of the battery; (c) measuring a recovery voltage differential of the battery; and (d) determining a condition of the battery as a function of the measured battery dynamic parameter, the open circuit voltage, the measured recovery voltage differential and a recovery voltage differential limit, which is a boundary condition for the recovery voltage differential. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An electronic battery tester comprising:
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a positive connector configured to couple to a positive terminal of the battery; a negative connector configured to couple to a negative terminal of the battery; a voltage sensor configured to measure an open circuit voltage and a recovery voltage differential of the battery; and battery test circuitry configured to (a) measure a dynamic parameter of the battery using the first and second connectors; and (b) determine a condition of the battery as a function of the measured battery dynamic parameter, the open circuit voltage, the measured recovery voltage differential and a recovery voltage differential limit, which is a boundary condition for the recovery voltage differential. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A method of testing a storage battery, comprising:
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(a) measuring a dynamic parameter of the battery; (b) obtaining an open circuit voltage of the battery; (c) measuring a recovery voltage differential of the battery; and (d) measuring a capacity of the battery as a function of the measured battery dynamic parameter, the open circuit voltage, the recovery voltage differential, a resistance limit of the battery, and a recovery voltage differential limit, which is a boundary condition for the recovery voltage differential.
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Specification