Detection of On-Board Charger Connection to Electric Vehicle Supply Equipment
First Claim
1. A vehicle comprising:
- a charger;
a charge port including circuitry configured to interface with a control pilot and a proximity sense conductor of electric vehicle supply equipment (EVSE) to respectively establish, when connected, a pilot signal between the charger and EVSE to control the charger and a proximity signal indicative of a state of engagement between the charge port and EVSE; and
at least one controller programmed to, in response to a valid pilot signal and a proximity signal indicative of disengagement between the charge port and EVSE, prevent driving of the vehicle.
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Accused Products
Abstract
Electric and plug-in hybrid vehicles connect to Electric Vehicle Supply Equipment (EVSE) to recharge a traction battery. Existing standards define the signal interface between the vehicle and EVSE including control pilot and proximity detect signals. The vehicle may use the status of these signals to detect when a connection is established with EVSE. The vehicle may indicate a connection when the signals provide conflicting statuses. The vehicle may prevent driving off and permit charging in the event of a proximity detect signal indicating a state of engagement other than connected as long as a valid control pilot signal is present. The status of the control pilot signal may be utilized to prevent drive-off and permit charging.
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Citations
14 Claims
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1. A vehicle comprising:
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a charger; a charge port including circuitry configured to interface with a control pilot and a proximity sense conductor of electric vehicle supply equipment (EVSE) to respectively establish, when connected, a pilot signal between the charger and EVSE to control the charger and a proximity signal indicative of a state of engagement between the charge port and EVSE; and at least one controller programmed to, in response to a valid pilot signal and a proximity signal indicative of disengagement between the charge port and EVSE, prevent driving of the vehicle. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A vehicle comprising:
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a charger; a charge port including circuitry configured to interface with a control pilot and a proximity sense conductor of electric vehicle supply equipment (EVSE) to respectively establish, when connected, a pilot signal between the charger and EVSE to control the charger and a proximity signal indicative of a state of engagement between the charge port and EVSE; and at least one controller programmed to, in response to a valid pilot signal and a proximity signal indicative of disengagement between the charge port and EVSE, permit charging of a traction battery. - View Dependent Claims (8, 9, 10)
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11. A method of controlling a vehicle comprising:
by at least one controller, receiving a proximity signal indicative of a state of engagement between a charge port and electric vehicle supply equipment (EVSE); receiving a pilot signal between a charger and EVSE; and enabling charging of a traction battery in response to a valid pilot signal and a proximity signal indicative of disengagement between the charge port and EVSE. - View Dependent Claims (12, 13, 14)
Specification