Controlled method for battery charging in electric vehicle for improving battery life
First Claim
1. A method for controlling the battery charge of an electric vehicle, the method comprising the steps of:
- measuring a battery charge state before starting charging of the battery;
calculating an anticipated current for charging and outputting a control signal for charging a battery according to a predetermined charge control program;
determining whether charging should be completed after the charge is started by comparing the anticipated charging current with an actual charging current to determine whether the actual charging current is larger than the anticipated charging current; and
terminating the charging if it is determined that the actual charging current is larger than the anticipated charging current.
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Abstract
A method for controlling charging the battery of an electric vehicle, wherein upon commencement of charging, a current charged state of a battery is measured to calculate an anticipated charging current to enable the completion of the battery charging. The degree of an undercharged state is determined in consideration of current battery aging to overcharge the battery as much as the undercharge, thereby preventing a battery performance degradation caused by continuous undercharging. A battery aging state in consideration of battery cycling is determined to increase calculation accuracy of the battery charging state, to thereby improve a running distance of the electric vehicle by maintaining an initial charge state.
23 Citations
9 Claims
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1. A method for controlling the battery charge of an electric vehicle, the method comprising the steps of:
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measuring a battery charge state before starting charging of the battery;
calculating an anticipated current for charging and outputting a control signal for charging a battery according to a predetermined charge control program;
determining whether charging should be completed after the charge is started by comparing the anticipated charging current with an actual charging current to determine whether the actual charging current is larger than the anticipated charging current; and
terminating the charging if it is determined that the actual charging current is larger than the anticipated charging current. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification