Power receiving device, experimental animal biological information acquisition device, and experimental animal biological information acquisition system
PROBLEM TO BE SOLVED: To transmit electric power to a laboratory animal biometric information acquisition device 12 embedded in a plurality of laboratory animals in a breeding cage 14 in a non-contact manner. To provide a power receiving device capable of observing behavior and continuously feeding power regardless of the direction and position of a laboratory animal. A secondary side coil portion (22) has a magnetic core (31) having a circular cross section perpendicular to the longitudinal direction, and a plurality of spiral coils (40a) formed by winding a conductor so as to have a substantially rectangular outer shape. The plurality of spiral coils 40a, 40b each have a side (40a1 and 40b1) and (40a2 and 40b2) close to each other so as to cover the entire peripheral surface of the magnetic core 31 and to form a magnetic body. The cores 31 are arranged in an annular shape (to form a ring) in the circumferential direction. [Selection diagram]【課題】飼育ケージ１４内の複数匹の実験動物に埋め込まれた実験動物生体情報取得装置１２に非接触で電力伝送する技術であり、飼育ケージ１４を送電側が覆うことが無く外部から実験動物の行動を観察でき、実験動物の向きや位置によらず継続的に給電できる受電装置を提供すること。【解決手段】２次側コイル部２２は、長手方向に垂直な断面形状が円形の磁性体コア３１と、外形が略四角形となるように導体を巻回して構成された複数のスパイラルコイル４０ａ、４０ｂを有し、複数のスパイラルコイル４０ａ、４０ｂは、それぞれその辺同士（４０ａ１と４０ｂ１）、（４０ａ２と４０ｂ２）を近接させて、磁性体コア３１の周面全体を覆うようにして、磁性体コア３１の周方向に環状に（リングを形成するように）配置されている。【選択図】 図４
