Patent ID: 11984730

Abstract:
This is a technology for non-contact power transmission to the laboratory animal biological information acquisition device 12 embedded in the multiple laboratory animals in the breeding cage 14, and provides the power reception device, which can observe the behavior of laboratory animals from outside without covering the breeding cage 14 with the power transmission side, and which can continuously supply power regardless of the direction and position of the laboratory animals.The secondary coil part 22 includes a magnetic core 31 having a circular cross-section perpendicular to the longitudinal direction, and a plurality of spiral coils 40a and 40b formed by winding a conductor so that the outer shape is substantially rectangular. The spiral coils 40a and 40b are arranged annularly in the circumferential direction of the magnetic core 31 so that the sides (40a1 and 40b1) and (40a2 and 40b2) are close to each other so as to cover the entire circumferential surface of the magnetic core 31 (arranged to form a ring).