To heighten the efficiency of power transmission from a contactless power feeding device to a power receiving device.SOLUTION: A variable diameter coil 14-1 includes a spiral conducting wire 42 drawing a spiral shape so as to be shifted to the outside by 1 pitch for each round, and a contact part 44A. The contact part 44A includes a movable part 66 that is provided with a first contact 54 and a second contact 56. The first contact 54 is in contact with the spiral conducting wire 42 at one of first positions of the spiral conducting wire 42 and connects the spiral conducting wire 42 to a first terminal 58. The second contact 56 is in contact with the spiral conducting wire 42 at a position N rounds outside from the first position and connects the spiral conducting wire 42 to a second terminal 62. The variable diameter coil 14-1 is provided with a rotation drive mechanism 68 for moving the first contact 54 and the second contact 56 in the circumferential direction.SELECTED DRAWING: Figure 1
【課題】本発明は、非接触給電装置から受電装置への電力伝送効率を高めることを目的とする。【解決手段】可変径コイル14-1は、周回するごとに1ピッチだけ外側にずれるように渦巻き形状を描く渦巻き導線42と、接触部44Aを備えている。接触部44Aは、第1接点54および第2接点56を有する可動部66を備えている。第1接点54は、渦巻き導線42におけるいずれかの第1位置で渦巻き導線42に接触し渦巻き導線42を第1端子58に接続する。第2接点56は、第1位置よりもN周だけの外側の位置で渦巻き導線42に接触し、渦巻き導線42を第2端子62に接続する。可変径コイル14-1は、第1接点54および第2接点56を周方向に移動させる回転駆動機構68を備えている。【選択図】図1
COIL FOR CONTACTLESS POWER FEEDING
非接触給電用コイル
2023-08-23
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 |
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