Degradation determination method for lithium-ion battery, control method for lithium-ion battery, degradation determination apparatus for lithium-ion battery, control apparatus for lithium-ion battery, and vehicle
First Claim
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1. A degradation determination method for a lithium-ion battery, comprising:
- determining a degradation state of the lithium-ion battery based on information about a voltage change in the lithium-ion battery obtained in a diagnosis mode in which the lithium-ion battery is successively charged and discharged at a constant power value.
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Abstract
A degradation state of a lithium-ion battery is determined on the basis of information about a voltage change in the lithium-ion battery obtained in a diagnosis mode in which the lithium-ion battery is successively charged and discharged at a constant power value. The constant power value in the diagnosis mode preferably may vary with the power storage amount and the temperature of the lithium-ion battery. As the information, the degree of a voltage drop in the lithium-ion battery obtained during the discharge can be used.
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Citations
14 Claims
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1. A degradation determination method for a lithium-ion battery, comprising:
determining a degradation state of the lithium-ion battery based on information about a voltage change in the lithium-ion battery obtained in a diagnosis mode in which the lithium-ion battery is successively charged and discharged at a constant power value. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A degradation determination apparatus for a lithium-ion battery, determining a degradation state of the lithium-ion battery, comprising:
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an obtaining section which obtains information about a voltage of the lithium-ion battery; and a determining section which determines the degradation state of the lithium-ion battery based on the information obtained by the obtaining section in a diagnosis mode in which the lithium-ion battery is successively charged and discharged at a constant power value. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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Specification