Researchers at Finland’s Aalto University have developed remote wireless charging technology capable of maintaining 80% charging efficiency at a distance of 18 cm.
Once fast charging has become almost a standard and a large number of Android smartphones in the market already have this technology, now some mobile manufacturers such as Xiaomi or Motorola are working to develop it. Your own remote wireless charging standardAlthough at the moment they are facing stumbling blocks: Maintain charging efficiency.
But now recent research from a Finnish university has created a remote wireless charging system that is capable Maintain more than acceptable charging efficiencyWhich means this new technology can Implanting his first device sooner than we thought.
This is a remote wireless charging technology developed by Aalto University
A group of researchers from Aalto University A study published in the journal Physical Review which works with a remote wireless charging technology that enables Increase charging efficiency over long distances.
As a general rule, the efficiency of wireless charging decreases rapidly as the distance between the transmitter and receiver increases, since Radiation from the transmitting and receiving coils interferes with transmissionBut scientists from this Finnish university managed to overcome this problem Two loop antennas, each 7.2 cm (2.8 in) wide.
These are the two 7.2 cm diameter coils that Aalto University researchers used to conduct their research.
Thus, by adjusting the currents in these antennas, these researchers were able to suppress the radiation resistance in the loops and increase the efficiency of wireless charging, even when these coils Placed 7 inches (18 cm) apart, the energy transfer efficiency was greater than 80%.
Nam Ha-Van, lead author of the study, explained How they managed to develop this new remote wireless charging technology:
“We wanted to effectively balance the power transfer with the radiation loss that always occurs over long distances. It turns out that when the currents of the loop antennas have equal amplitude and opposite phases, we can cancel the radiation loss, thus increasing the efficiency”.
This research can identify the before and after of remote wireless charging, as it can alleviate one of the major problems that this technology has been dragging down and Speed up your startup on a real device.
