System and method for redundantly controlling a dual electric vehicle supply equipment
First Claim
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1. A dual electric vehicle supply equipment (EVSE) comprising:
- a first alternating current (AC) charging circuit configured to receive AC power from a first AC voltage (ACV) input;
a second AC charging circuit configured to receive AC power from a second ACV input;
a low-voltage direct current (LVDC) circuit configured to provide LVDC to one or more control circuits of the dual EVSE, wherein the LVDC is derived from the AC power associated with either the first ACV input or the second ACV input; and
a double pole, double throw (DPDT) AC relay provided at an input of the LVDC circuit, wherein the DPDT AC relay is configured to switch the AC power to the LVDC circuit from either the first ACV input or the second ACV input.
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Abstract
A system and method is provided for creating a redundantly controlled dual electric vehicle supply equipment (EVSE). A double pole, double throw (DPDT) AC relay is provided on a power input to a low-voltage direct current (LVDC) circuit. The DPDT AC relay switches the AC power to the LVDC circuit automatically from either a LEFT ACV input or RIGHT ACV input such that operation of LVDC circuit remains uninterrupted.
11 Citations
17 Claims
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1. A dual electric vehicle supply equipment (EVSE) comprising:
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a first alternating current (AC) charging circuit configured to receive AC power from a first AC voltage (ACV) input; a second AC charging circuit configured to receive AC power from a second ACV input; a low-voltage direct current (LVDC) circuit configured to provide LVDC to one or more control circuits of the dual EVSE, wherein the LVDC is derived from the AC power associated with either the first ACV input or the second ACV input; and a double pole, double throw (DPDT) AC relay provided at an input of the LVDC circuit, wherein the DPDT AC relay is configured to switch the AC power to the LVDC circuit from either the first ACV input or the second ACV input. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for creating a redundantly controlled dual electric vehicle supply equipment (EVSE), the method comprising:
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providing a first alternating current (AC) power from a first AC voltage input to a low-voltage direct current (LVDC) circuit; sensing a loss of the first AC power from the first AC voltage input; and in response to sensing the loss, providing a second AC power from a second AC voltage input to the LVDC circuit, wherein LVDC provided by the LVDC circuit is derived from either the first AC power or the second AC power and wherein the LVDC is provided to one or more control circuits of the redundantly controlled dual EVSE. - View Dependent Claims (9)
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10. A dual electric vehicle supply equipment (EVSE) comprising:
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a low-voltage direct current (LVDC) circuit configured to receive a first alternating current (AC) power from a first AC voltage input; and a double pole, double throw (DPDT) AC relay configured to; sense a loss of the first AC power from the first AC voltage input, and provide a second AC power from a second AC voltage input to the LVDC circuit in response to the loss of the first AC power, wherein the LVDC circuit is configured to provide LVDC to one or more control circuits of the dual EVSE. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification