Relay device and electric vehicle charging controller comprising same
AssigneeLG Innotek Co., Ltd.
InventorIl Jong SONG
Life of this patent
Estimating the term…
Abstract
A relay device according to an embodiment of the present invention comprises: a relay unit in which a switch operates according to a voltage applied to a coil; a first control unit that controls a voltage applied to the coil by turning on and off a first switching element according to a first control signal; a first discharge unit and a second discharge unit that discharge a back electromotive force generated in the coil when the relay unit is turned off; and a second control unit including a second switching element, and controlling the back electromotive force to be discharged through the first discharge unit or the second discharge unit by turning on and off the switching element according to a second control signal.
Claims10
A relay device comprising:
- a relay unit in which a switch operates according to a magnitude of a voltage applied to a coil;
- a first control unit configured to control the voltage applied to the coil by turning on and off a first switching element according to a first control signal;
- a first discharge unit and a second discharge unit configured to discharge a back electromotive force generated in the coil when the relay unit is turned off;
- and
- a second control unit including a second switching element and configured to control the back electromotive force to be discharged through the first discharge unit or the second discharge unit by turning on and off the switching element according to a second control signal.
A relay device comprising:
- a switch;
- a coil disposed adjacent to the switch;
- a first diode having an anode terminal connected to a first end of the coil;
- a second diode having a cathode terminal connected to a cathode terminal of the first diode, and an anode terminal connected to a second end of the coil;
- a third diode having a cathode terminal connected to the first end of the coil;
- a first switching element having a first end connected to the anode terminal of the second diode, and a second end connected to a ground terminal;
- and
- a second switching element having a first end connected to an anode terminal of the third diode, and a second end connected to the anode terminal of the second diode.
An electric vehicle charging controller comprising:
- a first signal detection unit connected to a first signal line and configured to detect a first charging sequence signal;
- a second signal detection unit connected to a second signal line and configured to detect a second charging sequence signal;
- a relay unit in which a switch operates according to a magnitude of a voltage applied to a coil;
- a first control unit configured to control the voltage applied to the coil by turning on and off a first switching element according to a first control signal;
- a first discharge unit and a second discharge unit configured to discharge a back electromotive force generated in the coil when the relay unit is turned off;
- and
- a second control unit including a second switching element, and configured to control the back electromotive force to be discharged through the first discharge unit or the second discharge unit by turning on and off the switching element according to a second control signal,
- wherein the coil is disposed between the first signal line and the second signal line, and has one end connected to a relay of a junction box.
An electric vehicle comprising:
- a relay unit in which a switch operates according to a magnitude of a voltage applied to a coil;
- a first control unit configured to control the voltage applied to the coil by turning on and off a first switching element according to a first control signal;
- a first discharge unit and a second discharge unit configured to discharge a back electromotive force generated in the coil when the relay unit is turned off;
- and
- a second control unit including a second switching element, and configured to control the back electromotive force to be discharged through the first discharge unit or the second discharge unit by turning on and off the switching element according to a second control signal,
- wherein the switch is disposed between a battery of the electric vehicle and an inverter configured to drive a motor.
Dependencies are inferred from the claim text.