The present invention provides a wireless charging device for effectively using a battery of an electric vehicle and a wireless charging method. According to an embodiment of the present invention, the wireless charging device comprises: a transmission coil receiving alternating current (AC) to generate magnetic flux; an inverter receiving direct current (DC) to generate the AC; a DC-DC converter supplying the DC to the inverter; and a controller controlling operation of the DC-DC converter and the inverter to generate a ping signal through the transmission coil. The controller periodically generates a first ping signal, maintains DC supply during a first stabilization section from first ping signal generation, blocks the DC during a predetermined time after the first stabilization section, supplies the current after the predetermined time, and generates a second ping signal after a second stabilization section from the predetermined time.

    실시예에 따른 무선 충전기는 교류를 입력받아 자속(Magnetic flux)을 생성하는 송신 코일과, 직류를 입력받아 상기 교류를 생성하는 인버터와, 상기 인버터에 상기 직류를 공급하는 직류-직류 변환기와, 상기 직류-직류 변환기 및 인버터의 동작을 제어하여 상기 송신 코일을 통해 핑 신호를 생성하는 컨트롤러를 포함하고, 상기 컨트롤러는 제1 핑 신호를 주기적으로 발생시키고, 상기 제1 핑 신호 생성으로부터 제1 안정화 구간 동안 상기 직류 공급을 유지하고, 상기 제1 안정화 구간 이후, 소정 시간 동안 상기 직류를 차단하고, 상기 소정 시간 후에 상기 전류를 공급하고, 상기 소정 시간 후로부터 제2 안정화 구간 후에 제2 핑 신호를 생성하도록 설정될 수 있다.


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    Title :

    WIRELESS CHARGING DEVICE AND WIRELESS CHARGING METHOD


    Additional title:

    무선 충전기 및 무선 충전 방법


    Contributors:

    Publication date :

    2019-07-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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