Electronic battery tester
First Claim
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1. A device for testing a battery, comprising:
- measurement circuitry adapted to apply a signal to cells of the battery and measure a response signal of the cells that make up the battery; and
a microprocessor coupled to the measurement circuitry adapted to determine a statistical parameter of a first portion of a string of cells that make up the battery as a function of the response signal, measure a first dynamic parameter of a second portion of the string of cells that make up the battery as a function of the response signal, and provide an output based upon a comparison of the statistical parameter to the dynamic parameter.
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Abstract
A device for testing a battery of the type which consists of a string of individual cells includes circuitry adapted to measure a dynamic parameter of the cells or groups of cells that make up the battery. Measurements are used to construct a reference standard or to calculate a statistical parameter of a cell or group of cells that make up the battery. A output is provided which relates to the condition of the battery.
371 Citations
47 Claims
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1. A device for testing a battery, comprising:
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measurement circuitry adapted to apply a signal to cells of the battery and measure a response signal of the cells that make up the battery; and
a microprocessor coupled to the measurement circuitry adapted to determine a statistical parameter of a first portion of a string of cells that make up the battery as a function of the response signal, measure a first dynamic parameter of a second portion of the string of cells that make up the battery as a function of the response signal, and provide an output based upon a comparison of the statistical parameter to the dynamic parameter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A device for testing a battery, comprising:
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measurement circuitry adapted to apply a signal to cells of the battery and measure a response signal of the cells that make up the battery; and
a microprocessor coupled to the measurement circuitry adapted to measure a first dynamic parameter of a first portion of a string of cells that make up the battery, adapted to measure a second dynamic parameter of a second portion of the string of cells that make up the battery, compute a statistical parameter of the first and second dynamic parameters and provide an output based upon a comparison of the statistical parameter to a reference. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A method of testing a battery with an electronic battery tester, comprising:
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determining a statistical parameter for a first portion of cells in a string of cells that make up the battery;
measuring a first dynamic parameter of a second portion of the string of cells that make up the battery;
comparing the statistical parameter to the first dynamic parameter; and
providing an output as a function of the comparison. - View Dependent Claims (35, 36, 37, 38, 39, 40)
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41. A method of testing a battery with an electronic battery tester, comprising:
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obtaining a first dynamic parameter of a first portion of a string of cells that make up the battery;
obtaining a second dynamic parameter of a second portion of the string of cells that make up the battery;
computing a statistical parameter of the first and second dynamic parameters;
comparing the statistical parameter to a reference; and
providing an output as a function of the comparison. - View Dependent Claims (42, 43, 44, 45, 46)
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47. A device for testing a battery, comprising:
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measurement circuitry adapted to apply a signal to cells of the battery and measure a response signal of the cells that make up the battery; and
a microprocessor coupled to the measurement circuitry adapted to measure an initial first dynamic parameter of a first portion of a string of cells that make up the battery as a function of the response signal, store the initial dynamic parameter in memory, measure a subsequent dynamic parameter of the first portion of the string of cells that make up the battery as a function of the response signal, and provide an output based upon a comparison of the initial dynamic parameter to the subsequent dynamic parameter.
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Specification