Development of electric field-combined wireless power transmission system

　

　　Murata Manufacturing has developed an electric field combined power transmission system that can supply power wirelessly . This system allows devices to be charged simply by placing them on a charger, without the need for power cords, etc. This system is highly efficient and has a high degree of freedom in positioning, making it a very convenient system.

　　

Recently, with the popularization of mobile devices, wireless power transmission systems are being developed. The electromagnetic induction method, which has a lot of development cases, has the problem that charging cannot be performed if the charging position is slightly deviated. Our company adopted the technology of TMMS, which has electric field combined wireless power transmission technology, and jointly developed a wireless power transmission system with TMMS. This method allows charging without paying attention to the charging position.

　　

The electric field coupling method is a method of transmitting energy by setting electrodes on the power transmission side and the power reception side, and using the electric field generated between the electrodes. Since capacitance is generated between the electrodes, it is also called the capacitive coupling method.

　　

By combining our circuit design technology with TMMS's power transmission technology and further carefully designing the electrode structure, we have achieved wireless power transmission with high positional freedom and high efficiency.

　　・One charging station can charge multiple electronic devices.

　　・Our unique safety control method has realized a highly reliable system.

　　・Since the heat generated in the transmission part is small, the impact on the equipment is reduced.

　　・Since the device can be positioned freely, it can also be charged while on the move.

　　・Since the electrode portion of the power transmission interface can be formed into an extremely thin layer, it can be easily incorporated into the device.

　　・The charging stand can be made of a variety of materials, including transparent and flexible resin, to achieve high design.

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Mobile devices such as mobile phones, portable music players, digital cameras, notebook computers, lighting, decorations, residential equipment, etc.

　　・By using the office desk itself as a charger, a smart desk can be created where laptops, mobile phones, digital cameras, etc. can be charged simply by placing them on it.

　　・By adopting this system in all places, including transportation facilities and accommodation facilities, it will be possible to realize a society where charging can be done anywhere without the need for an AC adapter.

　　LXWS series, transmission power 1~10W, transmission efficiency in wireless transmission part is over 90%