POWER TRANSMISSION DEVICE

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POWER TRANSMISSION DEVICE

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MISAWA TAKAHIRO / NAKAMURA TORU / YAMADA HIDEAKI

PROBLEM TO BE SOLVED: To provide a power transmission device capable of suppressing variations in detection accuracy depending on the position of metallic foreign matter.SOLUTION: A power transmission device 3 includes: a power transmission coil 21 that transmits electric power in a non-contact manner to a power reception coil provided outside; and a plurality of detection coils 26, 27 provided around the power transmission coil 21. At a center of the detection coils 26, 27, at least one of a low permeability member having a magnetic permeability lower than that of air and a reflection member reflecting a magnetic flux passing through the detection coil is provided so as to suppress variations in detection precision depending on the position of metallic foreign matter.SELECTED DRAWING: Figure 2

【課題】金属異物の位置による検知精度のばらつきの抑制が図られた送電装置を提供する。【解決手段】送電装置３は、外部に設けられた受電コイルに非接触で電力を送電する送電コイル２１と、送電コイル２１の周囲に設けられた複数の検知コイル２６，２７とを備え、検知コイル２６，２７の中央部には、空気よりも透磁率が小さい低透磁率部材と、検知コイルを通る磁束を反射する反射部材との少なくとも一方が設けられ、金属異物の位置による検知精度のばらつきの抑制を図ることができる。【選択図】図２

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Document information

Title :

POWER TRANSMISSION DEVICE

Additional title:

送電装置

Contributors:

MISAWA TAKAHIRO (author) / NAKAMURA TORU (author) / YAMADA HIDEAKI (author)

Publication date :

2017-06-01

Type of media :

Patent

Type of material :

Electronic Resource

Language :

Japanese

Classification :

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 / H01F MAGNETS , Magnete