ELECTRIC VEHICLE
First Claim
1. An electric vehicle propelled by drive power from an electric motor, which is energized by electric power from an electric storage device, comprising:
- an electric receiving coil disposed above a vehicle underfloor panel, for supplying electric power to the electric storage device; and
a relay for transmitting electric power from an electric transmitting coil disposed underneath a road surface to the electric receiving coil through at least one of an electromagnetic induction wireless coupling and a resonant wireless coupling, wherein;
the relay comprises a first coil, a second coil, and a capacitor that jointly constitute a resonant circuit;
the first coil and the electric receiving coil jointly constitute a first wireless coupling;
the second coil and the electric transmitting coil jointly constitute a second wireless coupling;
the first coil is disposed above the vehicle underfloor panel and beneath the electric receiving coil in close proximity thereto, in order to make a coupling strength k of the first wireless coupling greater than a coupling strength k of the second wireless coupling; and
the second coil is disposed beneath the vehicle underfloor panel, and an index Q of the second wireless coupling concerning energy retained thereby is greater than an index Q of the first wireless coupling concerning energy retained thereby.
1 Assignment
0 Petitions
Accused Products
Abstract
Disclosed is an electric vehicle which receives power from a road surface by means of a wireless connection, in which an optimal configuration of a repeater (which is a resonator) and a receiving coil relative to the vehicle body is clarified. A first coil configuring the repeater forms a first wireless connection with a receiver coil, and a second coil forms a second wireless connection with a transmitting coil. The first coil is proximally arranged below the receiving coil and is aligned with the receiving coil, which is on the top side of a vehicle underbody panel; the second coil is arranged on the bottom side of the vehicle underbody panel. A performance indicator k*Q of the path from the transmitting coil below the road surface to the receiving coil of the electric vehicle is increased.
-
Citations
4 Claims
-
1. An electric vehicle propelled by drive power from an electric motor, which is energized by electric power from an electric storage device, comprising:
-
an electric receiving coil disposed above a vehicle underfloor panel, for supplying electric power to the electric storage device; and a relay for transmitting electric power from an electric transmitting coil disposed underneath a road surface to the electric receiving coil through at least one of an electromagnetic induction wireless coupling and a resonant wireless coupling, wherein; the relay comprises a first coil, a second coil, and a capacitor that jointly constitute a resonant circuit; the first coil and the electric receiving coil jointly constitute a first wireless coupling; the second coil and the electric transmitting coil jointly constitute a second wireless coupling; the first coil is disposed above the vehicle underfloor panel and beneath the electric receiving coil in close proximity thereto, in order to make a coupling strength k of the first wireless coupling greater than a coupling strength k of the second wireless coupling; and the second coil is disposed beneath the vehicle underfloor panel, and an index Q of the second wireless coupling concerning energy retained thereby is greater than an index Q of the first wireless coupling concerning energy retained thereby. - View Dependent Claims (2, 3, 4)
-
Specification