WIRELESS POWER TRANSMISSION SYSTEM, POWER TRANSMITTING DEVICE, AND POWER RECEIVING DEVICE

• Main Author: KANNO, Hiroshi
• Format: Patent
• Language: English; French; German
• Published: 30.09.2020
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRICITY; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; GENERATION; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; SYSTEMS FOR STORING ELECTRIC ENERGY; TRANSPORTING; VEHICLES IN GENERAL

A power transmitting system in an embodiment is usable in a wireless power transmission system based on an electric field coupling method. The power transmitting system includes a first power transmitting device; and a second power transmitting device. The first power transmitting device includes a first power transmitting electrode pair, and a first matching circuit connected with the first power transmitting electrode pair. The second power transmitting device includes a second power transmitting electrode pair, and a second matching circuit connected with the second power transmitting electrode pair. A parasitic capacitance between the electrodes of the first power transmitting electrode pair is smaller than a parasitic capacitance between the electrodes of the second power transmitting electrode pair. The first matching circuit has a parallel capacitance larger than a parallel capacitance of the second matching circuit.