VEHICLE POWER SUPPLY DEVICE AND ROADBED UNIT

To efficiently supply power by making a primary coil and a secondary coil face each other accurately with a simple structure.SOLUTION: In a vehicle power supply device 2, a roadbed unit 4 is embedded in the ground surface. In the roadbed unit 4, an upper stage part 13 provided with a top plate 8 and a lower stage part 14 are laminated. The upper stage part 13 comprises: a hollow primary coil movement area 12 which stores a primary coil 3 in a movable manner; and a compression member 16 on the periphery thereof. The lower stage part 14 comprises: a columnar body 23a for load support which supports the compression member 16; and a columnar body 23b for cooling which radiates the heat generated by the primary coil 3 into the ground. A car stop 25 provided on the top plate 8 and sensors 27a, 27b of a console unit 26 detect the positions of tires 7 of an electric vehicle 1 to calculate the position of the secondary coil 5 provided on the bottom part. With an instruction signal from the console unit 26, a carriage 20 of the primary coil 3 is driven and the primary coil 3 is moved to the position immediately under the secondary coil 5.SELECTED DRAWING: Figure 1 【課題】簡単な構造で一次コイルと二次コイルを精度良く対向させて効率よく電力を充電させる。【解決手段】車両給電装置２は路盤ユニット４を地表面に埋設している。路盤ユニット４は天板８を設けた上段部１３と下段部１４を積層した。上段部１３は、一次コイル３を移動可能に収納した中空の一次コイル移動エリア１２と、その周囲の圧縮部材１６と、を有する。下段部１４には圧縮部材１６を支持する荷重支持用円柱体２３ａと一次コイル３の発熱を地中に放熱する冷却用円柱体２３ｂとを有する。天板８に設けた車止め２５とコンソールユニット２６のセンサー２７ａ、２７ｂで電気自動車１のタイヤ７の位置を検出し、底部に設けた二次コイル５の位置を演算する。コンソールユニット２６からの指示信号により、一次コイル３の台車２０を駆動し、一次コイル３を二次コイル５の真下に移動させる。【選択図】図１