A coupling electrode of a communication coupler intersects with an orthogonal plane that is orthogonal to a coil axial line direction of a power transmission coil. That is, the coupling electrode of the communication coupler is not in parallel with the orthogonal plane orthogonal to the coil axial line direction of the power transmission coil. For example, the coupling electrode of the communication coupler is perpendicular to the orthogonal plane being orthogonal to the coil axial line direction, and includes the coil axial line direction in a plane of the coupling electrode.