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Xiaomi has today revealed its "Mi Air Charge Technology," which is able to wirelessly charge devices from across a room with 5W of power.



Mi Air Charge Technology offers a "true wireless charging" solution, with no cables or stands. Devices charge remotely with 5W of power, using advanced spatial positioning and beamforming energy transmission.

Xiaomi has developed an isolated charging pile unit with five phase interference antennas, which can accurately detect the location of a smartphone. A phase control array with 144 antennas then transmits millimeter-wide waves directly to the phone through beamforming.

For smartphones, Xiaomi has developed a corresponding miniaturized antenna array with a "beacon antenna" and a "receiving antenna array." The beacon antenna broadcasts low-power positional information, while the receiving antenna array uses 14 antennas to convert the millimeter wave signal emitted by the charging pile directly into electric energy via a rectifier circuit.

The remote charging technology is capable of charging multiple devices within a radius of several meters, with each device able to receive 5W of power. Xiaomi also notes that physical objects placed in between the charging pile and the device do not reduce the charging efficiency.

Xiaomi says that it is looking to expand the technology to smartwatches, wristbands, and other wearables, as well as smart home speakers, desk lamps, and more in the future. It is unclear how close Xiaomi is to bringing its Mi Air Charge Technology and charging pile to the consumer market, but today's reveal may suggest that it is sooner rather than later.

The announcement indicates that progress on remote wireless charging technology within the industry is steadily developing. Several years ago, Apple was rumored to be partnering with Energous to deliver its own remote wireless charging solution. Apple is still believed to be researching new wireless charging technologies, and with the advent of MagSafe on iPhone 12 models, the company is clearly interested in new ways to power devices.

Article Link: Xiaomi Announces 'Mi Air Charge' Remote Wireless Charging Technology
 

Mcckoe

macrumors member
Jan 15, 2013
39
18
Lol, without quantumly accelerated electrons, how do you plan to generate enough charge to even start a chain reaction flow? Years away, and in its current scope, you’d need two or three of these in every room... static generated capacitance fabrics hold more of a chance of charging your phone through a carbon discharged case; than this has to becoming mainstream... Tech needs to get better, before this is really possible.
 
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NMBob

macrumors 65816
Sep 18, 2007
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Is there going to be a kitchen plate that you can just lay a hot dog on and cook it "wirelessly"? How about a coffee cup? Wasn't this in an episode of The Avengers?
 
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Brandon42

macrumors member
Jul 24, 2019
30
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Lol, without quantumly accelerated electrons, how do you plan to generate enough charge to even start a chain reaction flow? Years away, and in its current scope, you’d need two or three of these in every room... static generated capacitance fabrics hold more of a chance of charging your phone through a carbon discharged case; than this has to becoming mainstream... Tech needs to get better, before this is really possible.
It is not delivering electricity through the beam but rather some frequency of radio waves in a tight beam. The technology is not impossible. I’d think the hardest part is guarding the tight beam so it shuts down safely when someone walks into it (or you could aim a bunch of low powered beams from many directions, then a single beam might be a tiny fraction of a watt and safe to walk through.)
 
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The Cappy

macrumors 6502
Nov 9, 2015
389
708
Dunwich Fish Market
Yeah but while your around the house your phone's not going to drain down before you go out.. 5w is plenty for the moment.. No more "oh, I forgot to charge my phone before going out" problem...
Of course, I didn't have that problem before. Charging is so much easier than it used to be, and still people complain it's too hard. Oh well.
 
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