NON-CONTACT WIRELESS COMMUNICATION COIL, TRANSMISSION COIL, AND PORTABLE WIRELESS TERMINAL

A coil unit is disposed by having laminated therein a first magnetic body (11), a first coil (12) for non-contact power transmission, a second magnetic body (21), a substrate (30), and a second coil (22) for non-contact wireless communication in this order in the thickness direction of the coils. Th...

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Bibliographic Details
Main Authors KOYANAGI, YOSHIO, UEJIMA, HIROYUKI, HIROBE, TAKANORI
Format Patent
LanguageEnglish
French
Japanese
Published 10.05.2013
Subjects
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Summary:A coil unit is disposed by having laminated therein a first magnetic body (11), a first coil (12) for non-contact power transmission, a second magnetic body (21), a substrate (30), and a second coil (22) for non-contact wireless communication in this order in the thickness direction of the coils. The first coil (12) and the second coil (22) have at least parts thereof overlapping each other, have a region where the second coil does not overlap, said region being on the inner circumferential side of the first coil, and have portions close to the outer circumference of the first coil (12) overlapping the second coil (22). The resonance frequency of the first coil (12) is lower than that of the second coil (22), and the magnetic permeability of the first magnetic body (11) is higher than that of the second magnetic body (21). Selon l'invention, une unité de bobine est disposée de sorte que sont stratifiés dans l'ordre, et dans une direction épaisseur de bobine : un premier corps magnétique (11); une première bobine (12) pour transmission de puissance sans contact; un second corps magnétique (21); un substrat (30); et une seconde bobine (22) pour communication sans fil sans contact. La première et la seconde bobine (12, 22) se superposent au moins partiellement, possèdent une région dans laquelle la seconde bobine ne se superpose pas côté périphérie interne de la première bobine, et la seconde bobine (22) se superpose à la première bobine (12) vers la périphérie externe de cette dernière. La fréquence de résonnance de la première bobine (12) est plus faible que celle de la seconde bobine (22), et la perméabilité magnétique du premier corps magnétique (11) est plus élevée que celle du second corps magnétique (21).
Bibliography:Application Number: WO2012JP06644