The Ulsan National Institute of Science and Technology team proposedElectric resonance wireless power transfer technology, claiming to be able to achieve high-power charging for devices at any location in three-dimensional space.
Traditional wireless charging technology uses electromagnetic principles to generate power coupling, enabling wireless power transmission within a certain distance, thereby charging devices within a specific range. However, because the wireless charging technology currently used in daily life is still limited in transmission distance, it is mostly only capable of charging in a fixed position. Even the slightest deviation from the device's position will prevent wireless charging.
The electric resonance wireless power transmission technology proposed by the Ulsan National Institute of Science and Technology in South Korea usesCharge characteristics, combined with an open dual-coil design to produce an electric resonance effect, it is claimed to be able to transmit 2W of power at 46% power within a distance of 50 meters. It can even charge multiple devices at the same time and is not restricted by a fixed charging location.
Previously, the market mostly used magnetic resonance to achieve wireless charging, allowing devices to remain usable during the charging process. However, the charging power was usually not high, so it was mainly used to replenish power in small IoT devices or sensor component application equipment for edge computing.
Including Xiaomi, OPPO and other industries have previously proposedLong-distance wireless charging technology, but the charging power is mostly between 5W-7.5W. Although it is advertised to be used for charging mobile phones, there may still be a big gap compared to the user's actual psychological expectations.
The new wireless power transmission technology proposed this time may be able to realize wireless charging design for daily life in the next few years while ensuring its safe use.
