Vehicle interface with non-local return to ground
First Claim
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1. A vehicle charging system comprising:
- a reference circuit configured to receive a control pilot signal output from an Electronic Vehicle Supply Equipment (EVSE) system, the reference circuit processing the control pilot signal to generate reference signals;
a shunt configured to connect the reference circuit in series with a vehicle chassis ground; and
a charger controller configured to output a control signal to a charger power plant that facilitates controlling a charging of a high voltage battery based on the control signal, the charge controller including a compensation device and being configured to generate the control signal in response to the compensation device processing the reference signal and the compensation device being configured to compensate for noise within the reference signal resulting from the reference circuit being connected in series with the shunt.
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Abstract
A vehicle interface is contemplated to be operable with an Electronic Vehicle Supply Equipment (EVSE) system and a vehicle charging system to facilitate vehicle charging related operations. The vehicle interface may include a noise compensation configured to facilitate compensating for noise within the reference signal resulting from the reference circuit. The vehicle interface may be configured to adapted to common mode interference and other influences resulting from connections between the vehicle interface and EVSE being referenced to earth ground and connections between the vehicle interface and other vehicle electronics being reference to a vehicle chassis ground.
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Citations
20 Claims
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1. A vehicle charging system comprising:
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a reference circuit configured to receive a control pilot signal output from an Electronic Vehicle Supply Equipment (EVSE) system, the reference circuit processing the control pilot signal to generate reference signals; a shunt configured to connect the reference circuit in series with a vehicle chassis ground; and a charger controller configured to output a control signal to a charger power plant that facilitates controlling a charging of a high voltage battery based on the control signal, the charge controller including a compensation device and being configured to generate the control signal in response to the compensation device processing the reference signal and the compensation device being configured to compensate for noise within the reference signal resulting from the reference circuit being connected in series with the shunt. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A vehicle charging apparatus comprising:
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a charge controller being operable with a reference circuit that (i) is connected in series with a shunt to a vehicle chassis ground of a vehicle, (ii) is configured to generate reference signals in response to receipt of a control pilot signal from an Electronic Vehicle Supply Equipment (EVSE) system that facilities powering a charger power plant included within a vehicle to charge a high voltage battery within the vehicle, (iii) includes a control pilot input operable to receive the control pilot signal of the EVSE system and an earth ground input operable to connect to an earth ground of the EVSE system, (iv) includes a first resistor connected in series between the control pilot input and the earth ground input, and (v) includes a first switch, a second resistor, and a second switch connected in series and in parallel to the first resistor in which the first switch and the second switch are each independently operable between an open position and a closed position; and a compensation device operable to process the reference signals into a charger control signal, the charger control signal for use with the charger power plant to facilitate controlling the charging of the high voltage battery, the compensation device being configured to limit noise of the charger control signal by compensating for noise within the reference signals that results from the reference circuit being connected in series with the shunt. - View Dependent Claims (16, 17, 18)
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19. A vehicle charging system comprising:
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a reference circuit configured to receive a control pilot signal output from an Electronic Vehicle Supply Equipment (EVSE) system, the reference circuit processing the control pilot signal to generate reference signals, the reference circuit being connected in series through a shunt to a vehicle chassis ground, the reference circuit including i) a control pilot input operable to receive the control pilot signal of the EVSE system; ii) an earth ground input operable to connect to an earth ground of the EVSE system; iii) a first resistor connected in series to the control pilot input, the earth ground input, the shunt, and the vehicle chassis ground; iv) a first switch, a second resistor, and a second switch connected in series to the control pilot input, the earth ground input, the shunt, and the vehicle chassis ground and in parallel to the first resistor, the first and second switches each being independently operable between an open position and a closed position according to corresponding first and second switch signals; and a charger controller being operable to (i) output a control signal to a charger power plant that relies on the control signal to facilitate controlling the charging of the high voltage battery and (ii) output the first and second switch signals to the first and second switches, wherein the charger controller includes a compensation device and is further operation to generate the control signal by processing the reference signals with the compensation device, and wherein the compensation device is configured to compensate for noise within the reference signal that results from the reference circuit being connected in series with the shunt. - View Dependent Claims (20)
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Specification