System and method for detecting and preventing cable theft in electric vehicle supply equipment
First Claim
Patent Images
1. An electric vehicle supply equipment (EVSE) comprising:
- a cable comprising at least two power conductors, at least one ground conductor, and at least one pilot conductor;
a sensor configured to sense a pilot-to-ground short between the at least one ground conductor and the at least one pilot conductor, wherein the pilot-to-ground short is sensed when a pilot signal voltage value associated with the at least one pilot conductor remains zero for a particular period of time;
a processor configured to;
determine that the cable associated with the EVSE is being cut in response to the sensing of the pilot-to-ground short; and
generate an alert in response to a determination that the cable is being cut.
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Abstract
A system and method is provided for preventing cable theft in electric vehicle supply equipment (EVSE). A sensor may be configured to sense a short between at least two components of a cable in the EVSE. A processor may be configured to determine that the cable is being cut in response to the sensing. The processor may be further configured to generate an alert in response to a determination that the cable is being cut.
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Citations
20 Claims
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1. An electric vehicle supply equipment (EVSE) comprising:
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a cable comprising at least two power conductors, at least one ground conductor, and at least one pilot conductor; a sensor configured to sense a pilot-to-ground short between the at least one ground conductor and the at least one pilot conductor, wherein the pilot-to-ground short is sensed when a pilot signal voltage value associated with the at least one pilot conductor remains zero for a particular period of time; a processor configured to; determine that the cable associated with the EVSE is being cut in response to the sensing of the pilot-to-ground short; and generate an alert in response to a determination that the cable is being cut. - View Dependent Claims (2, 3, 4, 5)
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6. An electric vehicle supply equipment (EVSE) comprising:
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a cable comprising at least two power conductors, at least one ground conductor, and at least one pilot conductor, wherein the at least two power conductors are configured to supply AC power to an electric vehicle; a sensor configured to sense a loss of the AC power; a processor configured to; observe a pilot signal voltage associated with the at least one pilot conductor; determine whether the pilot signal voltage is in an abnormal range; in response to a determination that the pilot signal voltage is in the abnormal range, determine that the loss of the AC power is due to the cable associated with the EVSE being cut; and generate an alert in response to the determination that the loss of the AC power is due to the cable being cut. - View Dependent Claims (7, 8, 9)
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10. An electric vehicle supply equipment (EVSE) comprising:
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a sensor configured to; sense a short between at least two components of a cable in the EVSE when the EVSE is not supplying AC power to an electric vehicle, and sense a loss of the AC power to the electric vehicle when the EVSE is supplying the AC power to the electric vehicle; and a processor configured to; determine that the cable is being cut in response to the sensing of the short between the at least two components of the cable or the sensing of the loss of the AC power to the electric vehicle; and generate an alert in response to a determination that the cable is being cut. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A method for preventing cable theft in an electric vehicle supply equipment (EVSE), the method comprising:
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sensing a pilot-to-ground short between a pilot conductor and a ground conductor of a cable in the EVSE, wherein the pilot-to-ground short is sensed when a pilot signal voltage value associated with the pilot conductor remains zero for a particular period of time; determining that the cable is being cut in response to the sensing of the pilot-to-round short; and generating an alert in response to a determination that the cable is being cut. - View Dependent Claims (18, 19, 20)
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Specification