US 12,135,220 B2
Power transmission device, non-contact power transmission system, and method for controlling power transmission device
Masaki Ito, Toyota (JP); Akihiro Kusumoto, Susono (JP); Takahiro Hirano, Gotemba (JP); Ryunosuke Yamashita, Susono (JP); Daiki Tajima, Miyoshi (JP); Katsuya Kobayashi, Okazaki (JP); and Toshihiro Nakamura, Sunto-gun (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Oct. 12, 2022, as Appl. No. 17/964,126.
Claims priority of application No. 2021-198555 (JP), filed on Dec. 7, 2021.
Prior Publication US 2024/0167835 A1, May 23, 2024
Int. Cl. G01C 21/36 (2006.01); B60L 53/12 (2019.01); G08G 1/0962 (2006.01); H02J 50/10 (2016.01); H02J 50/40 (2016.01); H02J 50/90 (2016.01)
CPC G01C 21/3632 (2013.01) [B60L 53/12 (2019.02); G01C 21/365 (2013.01); G08G 1/0962 (2013.01); H02J 50/10 (2016.02); H02J 50/402 (2020.01); H02J 50/90 (2016.02)] 9 Claims
OG exemplary drawing
 
1. A power transmission device comprising:
a plurality of power transmission coils arranged in a predetermined direction on a road and configured to transmit electric power in a non-contact manner to a power receiving coil mounted on a vehicle;
a display unit provided above the power transmission coils; and
a control unit that controls a display mode of the display unit so as to guide the vehicle in accordance with a traveling state of the vehicle, wherein:
when a traveling speed of the vehicle is slower than a specified speed of the road, the control unit controls the display unit such that the display unit emits light in a light emission pattern flowing in a traveling direction of the road on which the power transmission coils are installed;
the control unit increases a speed at which the light emission pattern flows as the traveling speed of the vehicle is slower; and
the power transmission coils are configured to transmit the electric power in the non-contact manner to the power receiving coil while the vehicle is moving on the road.