Vehicle charger and control pilot signal detection method thereof
AssigneesKia Motors Corporation, Hyundai Motor Company
InventorsJae Won Lee, Jung Hwan Na, Tae Hwan Chung
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Abstract
A control pilot (CP) signal detection method for a vehicle charger includes: counting CP signals based on signal levels of the CP signals during a set period of time, when an input of the CP signals is detected while an ignition of a vehicle is turned off; determining whether a count of high-level CP signals among the CP signals is within a reference range, when the set period of time elapses; and outputting state information of the CP signals based on the determination of whether the count of high-level CP signals is within the reference range.
Claims14
A control pilot (CP) signal detection method for a vehicle charger, the CP signal detection method comprising:
- counting CP signals based on signal levels of the CP signals during a set period of time, when an input of the CP signals is detected while an ignition of a vehicle is turned off;
- determining whether a count of high-level CP signals among the CP signals is within a reference range, when the set period of time elapses;
- and
- outputting state information of the CP signals based on the determination of whether the count of high-level CP signals is within the reference range.
A vehicle charger for charging a battery mounted in an electric vehicle (EV) by receiving power supplied from an electric vehicle supply equipment (EVSE), the vehicle charger comprising:
- a charging controller configured to control a charging operation of the vehicle charger;
- a main power source configured to supply main power to the charging controller and to cut-off the main power;
- a sub-power source configured to supply power to the battery as sub-power, when CP signals generated by the EVSE are input;
- and
- a power controller configured to monitor the CP signals generated by the EVSE while an ignition of the EV is turned off and to turn the main power source and the sub-power source on or off, respectively.
A CP signal detection method for a vehicle charger, the CP signal detection method comprising:
- classifying CP signals into high-level CP signals and low-level CP signals based on signal levels of the CP signals, and counting the high-level CP signals and the low-level CP signals, respectively, during a set period of time, while an ignition of a vehicle is turned off;
- determining which of a count of the high-level CP signals and a count of the low-level CP signals exceeds a threshold;
- and
- determining that a CP signal with a corresponding level is detected, based on which of the count of the high-level CP signals and the count of the low-level CP signals exceeds the threshold.
Dependencies are inferred from the claim text.