To provide a technique capable of suppressing or preventing such a defect that power supply from a power transmission device to a power reception device does not start when the power reception device changes from a non-opposite state to an opposite state with respect to the power transmission device, in the power transmission device.SOLUTION: A power transmission device 100 for supplying power in a non-contact manner to a movable power reception device 200 includes: a power transmission resonant circuit 110 having a power transmitting coil 112 and a power transmission resonant capacitor; a power transmission circuit 130 for supplying AC power to the power transmission resonant circuit; a power transmission request signal reception section 172 for receiving a power transmission request signal originating from the power reception device; and a switching section 174 for switching the value of a current flowing through the power transmitting coil, the switching section switching the value of current flowing through the power transmitting coil to the value of a current that can be supplied to the power reception device, by changing the input impedance of the power transmission resonant circuit upon reception of the power transmission request signal.SELECTED DRAWING: Figure 1
【課題】送電装置において、受電装置が送電装置に対して非対向状態から対向状態に変化した場合に送電装置から受電装置への給電が開始されない不具合を抑制または防止することができる技術を提供する。【解決手段】移動可能な受電装置200に非接触で給電を行うための送電装置100は、送電コイル112および送電共振コンデンサを有する送電共振回路110と、送電共振回路に交流電力を供給するための送電回路130と、受電装置から発信される送電要求信号を受信するための送電要求信号受信部172と、送電コイルに流れる電流値を切り替えるための切替174)であって、送電要求信号を受信した場合に、送電共振回路の入力インピーダンスを変化させることによって、送電コイルに流れる電流値を、受電装置に給電可能な電流値に切り替える切替部と、を備える。【選択図】図1
POWER TRANSMISSION DEVICE, NON-CONTACT POWER SUPPLY SYSTEM, AND POWER TRANSMISSION METHOD
送電装置、非接触給電システム、および送電方法
2023-09-14
Patent
Elektronische Ressource
Japanisch
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 / B60M Speiseleitungen oder Vorrichtungen am Gleis für elektrisch angetriebene Fahrzeuge , POWER SUPPLY LINES, OR DEVICES ALONG RAILS, FOR ELECTRICALLY-PROPELLED VEHICLES |
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