To suppress a primary coil and its periphery from becoming hot in the charging.SOLUTION: In a vehicle power supply device, 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 by receiving the load of an electric vehicle 1. The plurality of columnar bodies 23b for cooling in the lower stage part 14 have the upper end parts that are exposed to the primary coil movement area 12 by penetrating a vertical partition plate 21 and the lower end parts that are fixed to a bottom plate 9. When the electricity is conducted to the primary coil 3, the induction current is generated, the primary coil generates heat, and the heat is transmitted into the primary coil movement area 12, but the heat is radiated into the ground through the columnar bodies 23b for cooling and the bottom plate 9.SELECTED DRAWING: Figure 1
【課題】充電時に一次コイルや周辺が高温になることを抑制する。【解決手段】車両給電装置は路盤ユニット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と電気自動車1の荷重を受けて一次コイル3の発熱を地中に放熱する冷却用円柱体23bとを有する。下段部14における複数の冷却用円柱体23bは、上端部が上下仕切り板21を貫通して一次コイル移動エリア12に露出し、下端部は底板9に固定されている。一次コイル3に通電すると誘導電流が発生して発熱し一次コイル移動エリア12内に熱が伝わるが、冷却用円柱体23b及び底板9を介して地中に放熱させる。【選択図】図1
VEHICLE POWER SUPPLY DEVICE AND ROADBED UNIT
車両給電装置及び路盤ユニット
2021-11-01
Patent
Electronic Resource
Japanese
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