Contactless power transmission device
First Claim
1. A contactless power transmission device, comprising:
- a plurality of power transmission coil units;
a detection unit configured to detect a foreign substance on and around each power transmission coil unit;
a communication unit configured to communicate with a vehicle; and
a control unit configured to select one of the plurality of power transmission coil units based on information about a mounting position of a power reception device from the vehicle obtained by the communication unit, and to guide, when the detection unit detects a foreign substance at the selected power transmission coil unit, the vehicle toward a power transmission coil unit different from the selected power transmission coil unit, before the vehicle, which moves for positioning to the selected power transmission coil unit, stops.
1 Assignment
0 Petitions
Accused Products
Abstract
A contactless power transmission device includes: a plurality of power transmission coil units; a plurality of detection units configured to detect a foreign substance on and around each power transmission coil unit; a communication unit configured to communicate with a vehicle; and a control unit configured to select one of the plurality of power transmission coil units based on information about a mounting position of a power reception device from the vehicle obtained by the communication unit, and to guide, when a detection unit detects a foreign substance at the selected power transmission coil unit, the vehicle toward a power transmission coil unit different from the selected power transmission coil unit, before the vehicle stops. This can prevent a reduction in power transfer efficiency due to a foreign substance or the like in a power transmission device including a plurality of power transmission coils.
-
Citations
4 Claims
-
1. A contactless power transmission device, comprising:
-
a plurality of power transmission coil units; a detection unit configured to detect a foreign substance on and around each power transmission coil unit; a communication unit configured to communicate with a vehicle; and a control unit configured to select one of the plurality of power transmission coil units based on information about a mounting position of a power reception device from the vehicle obtained by the communication unit, and to guide, when the detection unit detects a foreign substance at the selected power transmission coil unit, the vehicle toward a power transmission coil unit different from the selected power transmission coil unit, before the vehicle, which moves for positioning to the selected power transmission coil unit, stops. - View Dependent Claims (2, 3, 4)
-
Specification