Xiaomi and Motorola both announced that they would charge in the air: what is the difference

Today’s digital circle is extremely lively.

What everyone did not expect was that before Xiaomi officially announced the air charging technology, it was actually “cut off” by Motorola.

I believe that all netizens have already watched a video about charging over the air released by Motorola this morning.

It can be seen from the video that Motorola’s air-to-air charging technology can enable two mobile phones to achieve true wireless charging without touching the charging pad.

Soon, Xiaomi followed suit and officially announced the Mi Air Charge technology (Mi Air Charge) that has 17 technology patents and is self-developed by Xiaomi.

According to the official introduction, the mobile phone does not need a charging cable, and the mobile phone can be charged within a few meters without touching the base.

So what is the difference between Xiaomi and Motorola’s air charging?

It is understood that Xiaomi’s air charging technology is completed by relying on Xiaomi’s self-developed air charging pile.

Through the built-in 5 phase interference antennas, the mobile phone can be positioned in millisecond space, and the position of the mobile phone can be accurately detected.

At the same time, a phase control array composed of 144 antennas transmits millimeter waves to the mobile phone through beamforming, and the mobile phone receives it through a micro beacon antenna, which can achieve 5 watts of remote charging within a few meters.

Motorola relies on a desktop millimeter wave transmitter to achieve directional charging with a range of 80-100 cm.

It is worth noting that, in the Motorola video, the charging of the transmitter is stopped immediately when the transmitter is blocked by hand.

Chen Jin, general manager of Lenovo’s mobile phone business department in China, said that this is a safety setting specially developed for the health of users. It is a safety protection provided when the human body is detected at the transmitting end of the charger with higher power. This is an engineering design. Machine protection common sense.