WIRELESS POWER SUPPLY DEVICE

• Main Author: YONEZAWA, Satoshi
• Format: Patent
• Language: English; French; German
• Published: 04.08.2021
• Subjects: BASIC ELECTRIC ELEMENTS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; CYCLES; ELECTRICITY; GENERATION; INDUCTANCES; LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS; MAGNETS; MEASURING; MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE; PERFORMING OPERATIONS; PHYSICS; POWERED PROPULSION OF SLEDGES OR; RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; SYSTEMS FOR STORING ELECTRIC ENERGY; TESTING; TRANSFORMERS; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES; TRANSPORTING

There is provided a wireless power supply device capable of being assembled through an easy process of electrically connecting both ends of a power transmitting LC circuit to an electrically-conductive case that forms a resonant cavity. The wireless power supply device includes the electrically-conductive case that accommodates a power transmitting circuit board and a power receiving LC circuit in the resonant cavity formed therein and surrounded by an electrically-conductive plate with the both ends of the power transmitting LC circuit being connected to the electrically-conductive plate. In the resonant cavity, a power transmitting coil and a power receiving coil resonate magnetically so as to supply power of an AC voltage signal to a load. The both ends of the power transmitting LC circuit are electrically connected to the electrically-conductive case using a pair of electrically-conductive attachment units configured to attach the power transmitting circuit board to an inner wall surface of the electrically-conductive case. In the step of attaching the power transmitting circuit board to the electrically-conductive case, the both ends of the power transmitting LC circuit can be electrically connected to the electrically-conductive case.