Search

KR-102964057-B1 - V2L CONNECTER WITH PROTECTION FUNCTION AND OPERATING METHOD THEREOF

KR102964057B1KR 102964057 B1KR102964057 B1KR 102964057B1KR-102964057-B1

Abstract

The present invention relates to a V2L connector equipped with a protection function and a method of operation thereof, comprising an overcurrent sensor that detects an overcurrent of AC power supplied from a vehicle, a leakage current sensor that detects leakage of the AC power, a relay that interrupts the connection with the vehicle, and a processor that determines that the AC power is faulty when a detection signal is input from at least one of the overcurrent sensor and the leakage current sensor, and controls the relay to cut off the supply of the AC power, thereby preventing the occurrence of an accident caused by leakage current or overcurrent.

Inventors

  • 황정우

Assignees

  • 주식회사 경신

Dates

Publication Date
20260513
Application Date
20240805

Claims (15)

  1. An overcurrent sensor that detects overcurrent of AC power supplied from a vehicle; A leakage current sensor that detects leakage of the above AC power; A relay for interrupting the connection with the above-mentioned vehicle; and A processor that determines that the AC power is faulty when a detection signal is input from at least one of the overcurrent sensor and the leakage current sensor, and controls the relay to cut off the supply of the AC power; When the supply of the above AC power is cut off, the processor controls the contact connection of the relay so that the discharge of the vehicle's battery is stopped by the vehicle charging management system (VCMS) of the vehicle, and A V2L connector equipped with a protection function, characterized in that the above relay changes the contact connection according to the control command of the above processor to open the CP terminal connection of the above vehicle charging management system (VCMS).
  2. delete
  3. In Article 1, The above Vehicle Charging Management System (VCMS) stops the discharge of the battery when the connection is disconnected by the above relay, and A V2L connector equipped with a protection function, characterized in that the supply of the AC power from an integrated charging system (ICCU) that converts the DC power of the battery into AC power is stopped when the discharge of the battery is stopped.
  4. In Article 1, The above relay is a 3-contact relay, and the V2L connector equipped with a protection function is characterized by changing the contact connection in response to a control command of the processor to disconnect the connection with the vehicle.
  5. In Article 1, An output unit including at least one LED lamp; further comprising, A V2L connector equipped with a protection function, characterized in that the above processor controls the output unit to output a power supply status through the LED lamp.
  6. In Article 5, A V2L connector equipped with a protection function, characterized in that when a detection signal is input from at least one of the overcurrent sensor and the leakage current sensor, the processor controls the output unit to output a power failure state through the LED lamp.
  7. In Article 1, A V2L connector equipped with a protection function, characterized in that the overcurrent sensor is a current transformer (CT) that applies an overcurrent detection signal to the processor when a current exceeding a set current value is detected.
  8. In Article 1, A V2L connector equipped with a protection function, characterized in that the above leakage current sensor is a Zero Current Transformer (ZCT) that applies a leakage current detection signal to the processor when an imbalance in the AC power occurs.
  9. In Article 1, It further includes a leakage circuit breaker connected to the above AC power source and cutting off the above AC power source, A V2L connector equipped with a protection function, characterized in that the processor controls the leakage circuit breaker to cut off the AC power when a detection signal is input from at least one of the overcurrent sensor and the leakage current sensor.
  10. A step in which, when AC power is supplied from a vehicle, an overcurrent sensor detects an overcurrent of the AC power; A step in which a leakage current sensor detects the leakage current of the AC power source; A step in which the processor determines that the AC power supply is faulty when a detection signal is input from at least one of the overcurrent sensor and the leakage current sensor; and The step of the processor controlling a relay to cut off the supply of the AC power when a fault is detected; is included. In the step of cutting off the supply of the above AC power, The above processor controls the contact connection of the above relay so that the battery discharge of the vehicle is stopped by the vehicle charging management system (VCMS) of the vehicle, and A method of operation of a V2L connector equipped with a protection function, characterized in that the above relay changes the contact connection in response to a control command of the above processor to open the CP terminal connection of the above vehicle charging management system (VCMS).
  11. delete
  12. delete
  13. In Article 10, A method of operation of a V2L connector equipped with a protection function, further comprising the step of, when the above AC power is supplied, the processor controls the output unit to output the power supply status through an LED lamp.
  14. In Article 13, After the step of determining that the above AC power is faulty, A method of operation of a V2L connector equipped with a protection function, further comprising the step of the processor controlling the output unit to output a power failure state through the LED lamp.
  15. In Article 10, A method of operation of a V2L connector equipped with a protection function, further comprising the step of, when a detection signal is input from at least one of the overcurrent sensor and the leakage current sensor, the processor controls a leakage circuit breaker connected to the AC power source to cut off the supply of the AC power source.

Description

V2L Connector with Protection Function and Operating Method Thereof The present invention relates to a V2L connector equipped with a protection function for supplying battery power of an automobile to a load, and a method of operation thereof. Electric vehicles can not only charge their batteries using external power but also output the power stored in the battery externally. V2L stands for Vehicle to Load and refers to a technology that supplies power from the vehicle to a load. When a connector equipped with this V2L technology is connected, an electric vehicle can supply power from the battery to an external device through the connector. The V2L connector is installed in the charging port of an electric vehicle and can convert power supplied from the vehicle's battery and then supply it to a power strip or electronic device connected to an outlet. The usage of V2L connectors is on the rise as outdoor activities, such as camping and car camping, increase. However, although the V2L connector supplies AC power to electronic devices through its own power converter, it lacks a separate safety device, which may cause problems such as leakage current or overcurrent being applied to electronic devices. Leakage current or overcurrent poses a risk as it can cause vehicle fire or electric shock accidents. Accordingly, V2L connectors require a safety device capable of detecting leakage and cutting off overcurrent. A related background technology is Korean Patent Publication No. 10-2024-0105159, "Wired and wireless integrated charging device providing V2L function and charging method using the same." FIG. 1 is a diagram showing the configuration of a V2L connector connected to a vehicle according to one embodiment of the present invention. FIG. 2 is a block diagram briefly illustrating the control configuration of a V2L connector according to one embodiment of the present invention. FIG. 3 is a diagram showing a protection circuit of a V2L connector according to one embodiment of the present invention. FIG. 4 is a diagram showing the configuration according to another embodiment of a V2L connector according to one embodiment of the present invention. FIG. 5 is a flowchart illustrating the operation method of a V2L connector according to an embodiment of the present invention. The present invention will be described below with reference to the attached drawings. In this process, the thickness of lines or the size of components depicted in the drawings may be exaggerated for the sake of clarity and convenience of explanation. Furthermore, the terms described below are defined considering their functions in the present invention, and these may vary depending on the intent or convention of the user or operator. Therefore, the definitions of these terms should be based on the content throughout this specification. FIG. 1 is a diagram showing the configuration of a V2L connector connected to a vehicle according to one embodiment of the present invention. As illustrated in FIG. 1, the V2L connector (100) of the present invention includes a V2L (Vehicle to Load) function and can discharge the battery of a vehicle (10) to supply power to a connected load (20). The V2L connector (100) is connected to the vehicle (10) and receives power from the battery of the vehicle (10). The V2L connector (100) may be connected to the charging port of the vehicle (10). The V2L connector (100) supplies power from the battery to a load (20) connected to the other side, for example, a power strip (21) or an electronic device (22). The V2L connector (100) may include an outlet on the other side. The load (20) is connected to the outlet of the V2L connector (100) and is located outside the vehicle (10). The V2L connector (100) can receive AC power when the DC power supplied from the battery of the vehicle (10) is converted into AC, and supply it to the load (20). The V2L connector (100) can measure the current and detect leakage current or overcurrent while supplying power to the load (20). If leakage current or overcurrent is detected, the V2L connector (100) can cut off the power supplied from the vehicle (10). Accordingly, the V2L connector (100) can prevent electric shock accidents or fires caused by leakage current or overcurrent. FIG. 2 is a block diagram briefly illustrating the control configuration of a V2L connector according to one embodiment of the present invention. As illustrated in FIG. 2, the V2L connector (100) may include a memory (120), a communication unit (130), a sensor (140), a relay (150), an input unit (170), an output unit (180), and a processor (110). The memory (120) can store data measured through the sensor (140). Additionally, the memory (120) can store at least one of power data, battery data of the vehicle (10), battery charge state data, overcurrent setting data, and relay control data. Additionally, the memory (120) can store data regarding at least one of a leakage current detection algorithm, an overcurrent de