A contactless power transfer core used for a power transmission coil or a power reception coil of a contactless power transfer apparatus includes: a winding core part (81) wound by an electric wire; and a magnetic pole core part (80) constituting a magnetic pole portion provided at both sides of the winding core part. A height of the uppermost part of a ferrite plate (80) arranged on a face of the magnetic pole core part at a side opposing a counterpart coil is equal to or greater than a height of an outer circumference of the electric wire (50) wound around the winding core part (81), and a height of the ferrite plate of a face at a side not opposing the counterpart coil is lower than the height of the outer circumference of the electric wire (50) wound around the winding core part (81). A magnetic gap length D2 can be reduced while maintaining the mechanical gap length D1, thereby the inter-coil coupling factor is improved, and the power feed efficiency and the maximum feed power are increased.
CONTACTLESS POWER TRANSFER SYSTEM
SYSTEM FÜR KONTAKTFREIE ENERGIEÜBERTRAGUNG
SYSTÈME DE TRANSFERT D'ÉNERGIE ÉLECTRIQUE SANS CONTACT
2018-10-31
Patent
Electronic Resource
English
IPC: | H01F MAGNETS , Magnete / 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 / 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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