Xiaomi says that its ‘air charge’ technology works over several meters


Xiaomi has announced “Mi Air Charge Technology”, a wireless charging system that claims the company is capable of charging devices “within a range of several meters”. According to Xiaomi, multiple devices can be charged at 5W at the same time, and physical constraints do not reduce charging efficiency.

Xiaomi says that the technology will also work with smartwatches and fitness bracelets. Another goal is to make the “living room truly wireless”, with speakers, lamps and smart home devices all being operated by the same remote system. A Xiaomi representative confirms this The ledgeHowever, no commercial product will incorporate the technology this year, and declined to provide a deadline for release.

Here in Xiaomi’s words, how Mi Air Charge Technology works:

Xiaomi’s main technology of remote charging lies in space conditions and energy transmission. Xiaomi has a five-stage interference antennas built into the self-developed isolated charging pile, which can accurately locate the location of the smartphone. A phase control array composed of 144 antennas transmits millimeter-wide waves directly to the phone via beamforming.

On the smartphone side, Xiaomi has also developed a small antenna array with built-in “beacon antenna” and “receiving antenna antenna”. Beacon antenna transmits status information with low power consumption. The antenna array array composed of 14 antennas converts the millimeter wave signal emitted by the charging pile into electrical energy via a rectifier circuit, to turn the sci-fi charging experience into reality.

Needless to say, you should be skeptical about the possibilities of this technology until it arrives on the market, unless the evidence suggests otherwise. Companies such as Energous have been making announcements about CES and “truly wireless charging” for years, but still have not severely impacted the technology. Xiaomi has demonstrated wireless charging engineering breakthroughs in the past, and has the advantage of owning a vast hardware ecosystem that it could theoretically benefit from.

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