A ground power supply device (1) for contactlessly transmitting power to a vehicle (5) is provided with: a plurality of resonant circuits (20); and one power supply source that supplies AC power having the same frequency to all of the resonant circuits. Each resonance circuit has: a coil 23 that is embedded in the road and transmits power in a non-contact manner; and a wiring (22) that connects each coil and a power supply source. The wiring of each resonant circuit is formed to have a length at least partially different from that of the wiring of the other resonant circuit, and an inductance parasitic in the wiring due to the difference in the length is at least partially different from that of the wiring of the other resonant circuit. The resonant circuits are further provided with capacitors having different capacitances such that the resonant frequencies of all the resonant circuits are the same even if parasitic inductances in the wiring differ.
向车辆5非接触地传输电力的地上供电装置1具备:多个谐振电路20;以及一个电力供给源,向所有谐振电路供给具有相同频率的交流电力。各谐振电路具有:线圈23,埋入道路内且用于非接触地传输电力;以及布线22,将各线圈和电力供给源连接。各谐振电路的布线形成为,具有与其它谐振电路的布线至少部分地不同的长度,并且由于该长度不同而在该布线中寄生的电感与其它谐振电路的布线至少部分地不同。谐振电路还具备具有不同电容的电容器,以使得即使布线中寄生的电感不同,所有谐振电路的谐振频率也相同。
Overground power supply device and wiring
地上供电装置及布线
2025-04-11
Patent
Electronic Resource
Chinese
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