To provide a power-transmission coil unit having suppressed parasitic inductance.SOLUTION: A power-transmission coil unit 1 comprises a power transmission coil 2, and a power supply member 3 for supplying power from a power source to the power transmission coil 2, the power supply member being electrically connected to each of the power source and the power transmission coil 2. The power supply member 3 has a first metal plate 31 and a second metal plate 32 which are insulated to one another via an isolation layer 34. When power is supplied from the power source, a current flows to the power transmission coil 2 via one of the first metal plate 31 and the second metal plate 32, and the current having passed through the transmission coil 2 returns to the power source via the other of the first metal plate 31 and the second metal plate 32. The direction of the current flowing in the first metal plate 31 and the direction of the current flowing in the second metal plate 32 are opposite to one another.SELECTED DRAWING: Figure 1
【課題】送電コイルユニットの寄生インダクタンスを低く抑えることができるようにする。【解決手段】送電コイルユニット1は、送電コイル2と、電源及び送電コイル2のそれぞれと電気的に接続され、電源から供給された電力を送電コイル2に供給する電力供給部材3と、を備える。電力供給部材3は、絶縁層34を介して絶縁された第1金属板31及び第2金属板32を備え、電源から電力が供給されたときに、第1金属板31又は第2金属板32の一方を介して送電コイル2に電流が流れ、送電コイル2を流れた電流が、第1金属板31又は第2金属板32の他方を介して電源に戻るように構成されると共に、第1金属板31を流れる電流の向きと、第2金属板32を流れる電流の向きとが逆向きになるように構成される。【選択図】図1
POWER TRANSMISSION COIL UNIT
送電コイルユニット
2024-03-25
Patent
Electronic Resource
Japanese
IPC: | H01F MAGNETS , Magnete / B60M Speiseleitungen oder Vorrichtungen am Gleis für elektrisch angetriebene Fahrzeuge , POWER SUPPLY LINES, OR DEVICES ALONG RAILS, FOR ELECTRICALLY-PROPELLED VEHICLES / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung |
POWER TRANSMISSION COIL UNIT, POWER RECEIVING COIL UNIT, AND WIRELESS POWER TRANSMISSION SYSTEM
European Patent Office | 2021
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