Electronic battery tester with battery failure temperature determination
First Claim
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1. An electronic battery tester for testing a storage battery, comprising:
- first and second Kelvin connections configured to electrically couple to terminals of the battery;
dynamic parameter measurement circuitry coupled to the Kelvin connections configured to provide a dynamic parameter output related to a dynamic parameter of the battery;
a voltage sensor configured to measure an open circuit voltage of the battery;
a temperature sensor configured to measure a battery temperature; and
calculation circuitry configured to provide a battery failure temperature for a desired output, the battery failure temperature is a function of the dynamic parameter, a battery rating, the open circuit voltage and the battery temperature.
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Abstract
A method and apparatus for testing a storage battery is provided that generates a temperature at which the battery will fail to meet performance criteria. The use of a temperature-based system to rate battery performance provides a clearer understanding to those not skilled in the art of battery testing. The critical failure temperature is obtained using the battery parameters of open circuit voltage, temperature and a dynamic parameter such as conductance or resistance.
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Citations
24 Claims
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1. An electronic battery tester for testing a storage battery, comprising:
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first and second Kelvin connections configured to electrically couple to terminals of the battery;
dynamic parameter measurement circuitry coupled to the Kelvin connections configured to provide a dynamic parameter output related to a dynamic parameter of the battery;
a voltage sensor configured to measure an open circuit voltage of the battery;
a temperature sensor configured to measure a battery temperature; and
calculation circuitry configured to provide a battery failure temperature for a desired output, the battery failure temperature is a function of the dynamic parameter, a battery rating, the open circuit voltage and the battery temperature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for testing a storage battery comprising:
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(a) obtaining a desired output rating of the battery;
(b) measuring a dynamic parameter of the battery;
(c) obtaining a temperature of the battery;
(d) measuring an open circuit voltage of the battery; and
(e) determining a battery failure temperature for the desired output as a function of the dynamic parameter, a rating of the battery, the temperature of the battery and the open circuit voltage of the battery. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification