Method of Controlling Battery Charging
First Claim
1. A machine implemented method for controlling the charging of a battery comprising:
- receiving current and voltage output information for the battery during a charging/discharging cycle at a certain time interval,using a model to determine charging efficiency of the battery and the overpotential for a side reaction,determining whether the charging efficiency is less than a first given value,determining whether the overpotential of the side reaction is less than a second given value, andsuspending the charging of the battery if either charging efficiency or overpotential is less than their respective given values.
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Accused Products
Abstract
The present teachings are directed toward methods of controlling the charging of a battery. The method includes the steps of receiving current and voltage output information for the battery during a charging/discharging cycle at a certain time interval, and using a model to determine both charging efficiency of the battery and the overpotential for a side reaction. These values for the charging efficiency and the overpotential of the side reaction are then compared to respective first and second given values. If either the charging efficiency or the overpotential is less than their respective given values, then the charging of the battery is suspended. The present method is particularly applicable to Li-ion batteries.
42 Citations
20 Claims
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1. A machine implemented method for controlling the charging of a battery comprising:
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receiving current and voltage output information for the battery during a charging/discharging cycle at a certain time interval, using a model to determine charging efficiency of the battery and the overpotential for a side reaction, determining whether the charging efficiency is less than a first given value, determining whether the overpotential of the side reaction is less than a second given value, and suspending the charging of the battery if either charging efficiency or overpotential is less than their respective given values. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A battery charging device for a battery comprising:
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a battery; a battery charger for charging the battery; and a charging control means comprising receiving current and voltage output information for the battery during a charging/discharging cycle at a certain time interval, using a model to determine charging efficiency of the battery and the overpotential for a side reaction, determining whether the charging efficiency is less than a first given value, determining whether the overpotential of the side reaction is less than a second given value, and suspending the charging of the battery if either charging efficiency or overpotential is less than their respective given values. - View Dependent Claims (11, 12)
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13. A machine implemented method for controlling the charging of a battery comprising:
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receiving current and voltage output information for the battery during a charging/discharging cycle at a certain time interval, using a model to determine charging efficiency of the battery, determining whether the charging efficiency is less than a first given value, and suspending the charging of the battery if the charging efficiency is less than the first given value. - View Dependent Claims (14, 15, 16)
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17. A machine implemented method for controlling the charging of a battery comprising:
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receiving current and voltage output information for the battery during a charging/discharging cycle at a certain time interval, using a model to determine the overpotential for a side reaction, determining whether the overpotential of the side reaction is less than a first given value, and suspending the charging of the battery if the overpotential is less than the first given value. - View Dependent Claims (18, 19, 20)
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Specification