SYSTEM AND METHOD FOR CHARGING PLUG-IN HYBRID VEHICLE
First Claim
1. A system for charging a plug-in hybrid vehicle, the system comprising:
- a cooler configured to cool an on-board charger by circulating coolant therethrough, the on-board charger charging a high-voltage battery of a vehicle; and
a controller having voltage information of the high-voltage battery input thereto and a reference voltage range previously stored therein,wherein when a voltage of the high-voltage battery is within the reference voltage range, the controller decreases a frequency of operation and an intensity of cooling of the cooler, and when the voltage of the high-voltage battery is out of the reference voltage range, the controller increases the frequency of operation and the intensity of cooling of the cooler.
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Accused Products
Abstract
A system and method for charging a plug-in hybrid vehicle can improve the on-board charging efficiency of the plug-in hybrid vehicle by adjusting a frequency of operation of a cooler when cooling an on-board charger (OBC) by circulating coolant when the temperature of the OBC rises while a high-voltage battery is being charged. The operations of a water pump and a radiator fan are controlled by determining whether the voltage of the high-voltage battery is within or out of a reference voltage range in which the on-board charging of the high-voltage battery is performed. This consequently prevents power from being unnecessarily consumed by operation of the cooler, such that the efficiency of charging is improved and the OBC is properly cooled.
5 Citations
17 Claims
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1. A system for charging a plug-in hybrid vehicle, the system comprising:
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a cooler configured to cool an on-board charger by circulating coolant therethrough, the on-board charger charging a high-voltage battery of a vehicle; and a controller having voltage information of the high-voltage battery input thereto and a reference voltage range previously stored therein, wherein when a voltage of the high-voltage battery is within the reference voltage range, the controller decreases a frequency of operation and an intensity of cooling of the cooler, and when the voltage of the high-voltage battery is out of the reference voltage range, the controller increases the frequency of operation and the intensity of cooling of the cooler. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of charging a plug-in vehicle, the method comprising:
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measuring, by a controller, a voltage of a high-voltage battery; increasing, by the controller, a frequency of operation and an intensity of cooling of a cooler when the voltage of the high-voltage battery is out of a reference voltage range that is previously stored after measuring the voltage of the high-voltage battery; and reducing, by the controller, the frequency of operation and the intensity of cooling of the cooler when the voltage of the high-voltage battery is within the reference voltage range that is previously stored after measuring the voltage of the high-voltage battery. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A non-transitory computer readable medium containing program instructions executed by a processor, the computer readable medium comprising:
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program instructions that measure a voltage of a high-voltage battery; program instructions that increase a frequency of operation and an intensity of cooling of a cooler when the voltage of the high-voltage battery is out of a reference voltage range that is previously stored after measuring the voltage of the high-voltage battery; and program instructions that reduce the frequency of operation and the intensity of cooling of the cooler when the voltage of the high-voltage battery is within the reference voltage range that is previously stored after measuring the voltage of the high-voltage battery.
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Specification