POWER TRANSMISSION DEVICE AND METHOD FOR PRODUCING SAME, AND POWER RECEPTION DEVICE AND METHOD FOR PRODUCING SAME

A power transmission device (50) that transmits electric power to a power reception device in a contactless manner includes a power transmission coil unit (400), an electrical device connected to the power transmission coil unit (400), and an enclosure (600) storing the power transmission coil unit (400) and the electrical device. The enclosure (600) includes an installation wall (610) located on the side of an installation surface, an outer wall (601) provided to cover the installation wall (610) from the side of a side surface and leaving space in the enclosure (600), a partitioning wall (660) partitioning the space, and a cover portion (620A) closing an opening (601a) formed in a power transmission surface of the outer wall (601) and allowing transmission of electric power by the power transmission coil unit (400). The partitioning wall (660) is provided to partition the space in the enclosure (600) into a coil-unit storing portion (510) in which the cover portion (620A) is located and the power transmission coil unit (400) is stored, and an electrical-device storing portion (520) in which the electrical device is stored. The outer wall (601) and the partitioning wall (660) are made of metal.