Patent ID: 11894691
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A power transmission device for supplying power in a contactless manner to a power reception device having a power reception electrode, the power transmission device comprising:
a DC power supply to output DC power;
a power converter to convert the DC power outputted from the DC power supply to AC power;
a power transmission electrode to receive the AC power converted by the power converter;
a voltage detector to detect a voltage of the power transmission electrode; and
a controller to control the DC power supply or the power converter on the basis of the voltage detected by the voltage detector, wherein
power is supplied to the power reception device through capacitive coupling between the power transmission electrode and the power reception electrode, and
the voltage detector has a voltage detection electrode and a capacitor connected in parallel with the voltage detection electrode,
a capacitance of the capacitor connected in parallel with the voltage detection electrode is greater than a coupling capacitance between the voltage detection electrode and the power transmission electrode, and
the voltage detector detects the voltage of the power transmission electrode through capacitive coupling between the power transmission electrode and the voltage detection electrode.