송전 코일(14)을 갖는 송전 장치(10c), 수전 코일(41)을 갖는 수전 장치(40)를 구비한다. 그리고, 송전 코일(14)로부터 수전 코일(41)에 비접촉으로 전력을 송전하여, 수전 장치(40)에 탑재된 배터리(44)에 전력을 공급한다. 수전 장치(40)는, 송전 전력 지령값과 배터리(44)에 공급되는 급전 전력으로부터 제1 효율을 연산하는 제1 효율 연산부(55)를 갖는다. 송전 장치(10c)는, 송전 코일(14)에 공급되는 전압과 전류의 위상차로부터 제2 효율을 연산하는 제2 효율 연산부(31)를 갖는다. 또한, 송전 전력 지령값에 기초하여 송전 코일(14)에 공급하는 전력을 제어하고, 또한 제1 효율이 미리 설정한 제1 역치 효율 이하로 된 경우, 혹은 제2 효율이 미리 설정한 제2 역치 효율 이하로 된 경우에, 송전 코일(14)에 공급하는 전력을 억제하는 제어량 연산부(29)를 갖는다.

    A wireless power supply system includes a power transmission device (10c) having a power transmission coil (14) and a power receiving device (40) having a power receiving coil (41). The power transmission coil (14) transmits electric power to the power receiving coil (41) via a wireless connection, so as to supply the electric power to a battery (44) installed in the power receiving device (40). The power receiving device (40) includes a first efficiency calculator (55) configured to calculate a first efficiency based on a transmission power command value and the electric power supplied to the battery (44). The power transmission device (10c) includes a second efficiency calculator (31) configured to calculate a second efficiency based on a phase difference between a voltage and a current supplied to the power transmission coil (14). The power transmission device (10c) further includes a control amount calculator (29) configured to control electric power supplied to the power transmission coil (14) according to the transmission power command value, and regulate the electric power supplied to the power transmission coil (14) when the first efficiency falls to a predetermined first threshold efficiency or less or when the second efficiency falls to a predetermined second threshold efficiency or less.


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    Titel :

    WIRELESS POWER SUPPLY SYSTEM AND POWER TRANSMISSION DEVICE


    Weitere Titelangaben:

    비접촉 급전 시스템 및 송전 장치


    Beteiligte:

    Erscheinungsdatum :

    12.09.2016


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Koreanisch


    Klassifikation :

    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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