Lithium-ion battery controlling apparatus and electric vehicle
First Claim
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1. A lithium-ion battery controlling apparatus comprising:
- a controller configured to raise an upper-limit voltage of a lithium-ion battery by increasing a potential of a positive electrode of the lithium-ion battery in response to capacity degradation occurring at a negative electrode of the lithium-ion battery, wherein the capacity degradation is defined as an increase in internal resistance within the lithium-ion battery over time that results in a reduction in charge storage capacity of the lithium-ion battery when measured by charging the lithium-ion battery at a same charging voltage for a same length of time, and wherein the lithium ion battery is configured to supply power to a load and receive power from the load.
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Abstract
A lithium-ion battery controlling apparatus includes a controller. The controller is configured to raise an upper-limit voltage in response to capacity degradation of a lithium-ion battery which is configured to supply power to a load and receive power from the load.
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10 Claims
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1. A lithium-ion battery controlling apparatus comprising:
a controller configured to raise an upper-limit voltage of a lithium-ion battery by increasing a potential of a positive electrode of the lithium-ion battery in response to capacity degradation occurring at a negative electrode of the lithium-ion battery, wherein the capacity degradation is defined as an increase in internal resistance within the lithium-ion battery over time that results in a reduction in charge storage capacity of the lithium-ion battery when measured by charging the lithium-ion battery at a same charging voltage for a same length of time, and wherein the lithium ion battery is configured to supply power to a load and receive power from the load. - View Dependent Claims (2, 3, 4, 5, 6, 7, 9)
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8. An electric vehicle comprising:
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a motor; a lithium-ion battery configured to supply power to the motor and receive power from the motor; a degradation detector configured to detect or estimate a degree of degradation of the lithium-ion battery; and an upper-limit voltage controller configured to raise an upper-limit voltage of the lithium-ion battery during regeneration in accordance with the degree of degradation of the lithium-ion battery, wherein the degree of degradation is defined as an increase in internal resistance within the lithium-ion battery over time that results in a reduction in charge storage capacity of the lithium-ion battery when measured by charging the lithium-ion battery at a same charging voltage for a same length of time. - View Dependent Claims (10)
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Specification