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.


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    Title :

    CONTACTLESS POWER TRANSFER SYSTEM


    Additional title:

    SYSTEM FÜR KONTAKTFREIE ENERGIEÜBERTRAGUNG
    SYSTÈME DE TRANSFERT D'ÉNERGIE ÉLECTRIQUE SANS CONTACT


    Contributors:
    YASUDA TOMIO (author) / KISHI HIROYUKI (author) / ABE SHIGERU (author) / SUZUKI AKIRA (author)

    Publication date :

    2018-10-31


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    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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