Abstract: The power supply device 10 including: a power transmission unit 40 that is provided on the floor part F and that extends along a slide direction in which the seat S slides; and a power receiving unit 70 that is provided to the seat S and that receives power from the power transmission unit 40 in a contactless fashion. The power transmission unit 40 is provided so that the length dimension thereof in the slide direction is longer than the length dimension thereof in a direction that is orthogonal to the slide direction, and a part of the power receiving unit 70 that receives power from the power transmission unit 40 is positioned close to the power transmission unit 40 within an installation area of the power transmission unit 40 while the seat S slides and rotates.

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.

Abstract: A technology disclosed in the present specification is a power supply device 10 configured to supply electric power to a seat S that can slide and rotate with respect to a floor part F of a vehicle. The power supply device 10 comprises: a power transmission unit 40 that is provided on the floor part F and extends along a sliding direction in which the seat S slides; and a power reception unit 70 that is provided on the seat S and receives electric power from the power transmission unit 40 in a contactless manner, wherein the power transmission unit 40 is provided such that the length dimension in the sliding direction is longer than the length dimension in a direction orthogonal to the sliding direction, and a portion of the power reception unit 70, which receives electric power from the power transmission unit 40, is disposed within an installation range of the power transmission unit 40 in a state of being close to the power transmission unit 40 while the seat S is sliding and rotating.

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.