ELECTRIC VEHICLE SUPPLY EQUIPMENT AND CONTROL METHOD THEREOF
First Claim
1. An electric vehicle supply equipment control method comprising:
- detecting a voltage at an output end of a switch of the electric vehicle supply equipment before charging an electric vehicle;
tripping an earth leakage circuit breaker for cutting off power inputted to the switch and preventing the output end from outputting the power when the voltage at the output end is higher than a first predetermined value;
detecting a current at the output end; and
cutting off power inputted to the switch for preventing the output end from outputting the power when the current at the output end is higher than a second predetermined value.
1 Assignment
0 Petitions
Accused Products
Abstract
A voltage at an output end of a switch of an electric vehicle supply equipment is detected before charging an electric vehicle. An earth leakage circuit breaker is tripped for cutting off power inputted to the switch and preventing the output end from outputting the power when the voltage is higher than a first predetermined value. The switch is turned on for outputting the power from the output end to charge the electric vehicle when the voltage is lower than the first predetermined value. A current is detected at the output end. Power inputted to the switch is cut off for preventing the output end from outputting the power when the current is higher than a second predetermined value.
-
Citations
13 Claims
-
1. An electric vehicle supply equipment control method comprising:
-
detecting a voltage at an output end of a switch of the electric vehicle supply equipment before charging an electric vehicle; tripping an earth leakage circuit breaker for cutting off power inputted to the switch and preventing the output end from outputting the power when the voltage at the output end is higher than a first predetermined value; detecting a current at the output end; and cutting off power inputted to the switch for preventing the output end from outputting the power when the current at the output end is higher than a second predetermined value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. An electric vehicle supply equipment comprising:
-
a switch; a voltage detector for detecting a voltage at an output end of the switch; a first relay coupled to the switch for controlling the switch; a first relay controller coupled to the first relay for controlling the first relay; a second relay for tripping an earth leakage circuit breaker when the voltage at the output end is higher than a predetermined value; a second relay controller coupled to the second relay for controlling the second relay; a controller coupled to the voltage detector, the first relay controller, and the second relay controller for controlling the first relay controller and the second relay controller according to the voltage at the output end; a current detector coupled to the controller for detecting a current at the output end; and a communication unit coupled to the controller for communicating with an electric vehicle. - View Dependent Claims (10, 11, 12, 13)
-
Specification