INTERNAL RESISTANCE MEASUREMENT DEVICE AND METHOD FOR STACKED BATTERY
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Abstract
An internal resistance measurement device for stacked battery includes an AC power supply part for outputting an AC current to an measurement-object, which includes at least a stacked battery made of a plurality of stacked power generating elements, by being connected to the measurement-object, an AC adjusting part for adjusting an AC current so that a positive-electrode AC potential difference, which is a potential difference obtained by subtracting potential in a middle portion from potential in a portion connected to a load device on the positive side of the measurement-object, matches a negative-electrode AC potential difference, which is a potential difference obtained by subtracting potential in the middle portion from potential in a portion connected to the load device on the negative side of the measurement-object, and a resistance calculating part for calculating resistance of the battery based on the adjusted AC current and the AC potential difference.
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Citations
28 Claims
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1-12. -12. (canceled)
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13. An internal resistance measurement device for stacked battery comprising:
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an AC power supply part for outputting an AC current to an internal resistance measurement object comprising a stacked battery made of a plurality of stacked power generating elements by being connected to the internal resistance measurement object; a positive portion connected to a positive electrode of the internal resistance measurement object; a negative portion connected to a negative electrode of the internal resistance measurement object; a middle portion connected to a middle part of the internal resistance measurement object; an AC adjusting part for adjusting an AC current output to the positive electrode and the negative electrode of the internal resistance measurement object; and a resistance calculating part for calculating resistance of the stacked battery based on the adjusted AC current and the AC potential difference.
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14. An internal resistance measurement device for stacked battery comprising:
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an AC power supply part for outputting an AC current to an internal resistance measurement object comprising a stacked battery made of a plurality of stacked power generating elements by being connected to the internal resistance measurement object; an AC adjusting part for adjusting an AC current so that a positive electrode AC potential difference, being a potential difference obtained by subtracting potential in a middle portion from potential in a portion connected to a load device on the positive electrode side of the internal resistance measurement object, matches a negative electrode AC potential difference, being a potential difference obtained by subtracting potential in the middle portion from potential in a portion connected to the load device on the negative electrode side of the internal resistance measurement object; and a resistance calculating part for calculating resistance of the stacked battery based on the adjusted AC current and the AC potential difference.
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15. An internal resistance measurement device for stacked battery comprising:
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an AC power supply part for outputting an AC current to an internal resistance measurement object including at least a stacked battery made of a plurality of stacked power generating elements by being connected to the internal resistance measurement object; an AC adjusting part for adjusting an AC current so that a positive electrode AC potential difference, being a potential difference obtained by subtracting potential in a middle portion from potential in a portion connected to a load device on the positive electrode side of the internal resistance measurement object, matches a negative electrode AC potential difference, being a potential difference obtained by subtracting potential in the middle portion from potential in a portion connected to the load device on the negative electrode side of the internal resistance measurement object; and a resistance calculating part for calculating resistance of the stacked battery based on the adjusted AC current and the AC potential difference. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. An internal resistance measurement method for stacked battery comprising:
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an AC output step of outputting an AC current to an internal resistance measurement object comprising a stacked battery made of a plurality of stacked power generating elements by being connected to the internal resistance measurement object; an AC adjusting step of adjusting an AC current so that a positive electrode AC potential difference, being a potential difference obtained by subtracting potential in a middle portion from potential in a portion connected to a load device on the positive electrode side of the internal resistance measurement object, matches a negative electrode AC potential difference, being a potential difference obtained by subtracting potential in the middle portion from potential in a portion connected to the load device on the negative electrode side of the internal resistance measurement object; and a resistance calculating step of calculating resistance of the stacked battery based on the adjusted AC current and the AC potential difference.
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28. An internal resistance measurement method for stacked battery by outputting an AC power supply part for outputting an AC current to an internal resistance measurement object including at least a stacked battery made of a plurality of stacked power generating elements, comprising:
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providing a middle electrode for providing a common AC voltage of a positive electrode and a negative electrode at a middle portion between the positive electrode side and the negative electrode side of the internal resistance measurement object; supplying an AC current to the positive electrode side and the negative electrode side of the internal resistance measurement object; adjusting an AC current so that a positive electrode AC potential difference, being a potential difference obtained by subtracting potential in the middle electrode from potential on the positive electrode of the internal resistance measurement object, matches a negative electrode AC potential difference, being a potential difference obtained by subtracting potential in the middle electrode from potential on the negative electrode of the internal resistance measurement object; and calculating resistance of the stacked battery based on the adjusted AC current and the AC potential difference.
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Specification