Benchmark Xiaomi!Huawei’s “space charging” patent exposure: using antennas to transmit power

Some time ago, Xiaomi led the industry and released a wireless charging solution in the air, which can completely free the mobile phone from the shackles of the charging cable, and realize the effect of charging while using and charging at any time. Although it has not yet been applied to mass-produced models, it is still impressive. Bright eyes. Now, Huawei is also following up on this technology.


Source: Screenshot of Qichacha

According to data from the national patent website, Huawei Technologies Co., Ltd. disclosed an invention patent titled “A transmitter, receiver and system for long-distance wireless charging” on April 20, publication number CN112689938A, application date 2020 April.

The patent abstract shows that this application discloses a transmitter for long-distance wireless charging, which is characterized in that it is used to wirelessly charge the receiver; the transmitter includes a transmitter processor, a baseband radio frequency conversion unit, and a transmitter antenna.

Among them, the transmitter processor is used to generate a composite signal according to the control signal and the power signal and send it to the baseband radio frequency conversion unit; the control signal is used to control the working state of the receiver end, and the power signal is used to charge the receiver end; the baseband radio frequency conversion unit , which is used to convert the composite signal into a radio frequency signal and send it to the transmitter antenna; the transmitter antenna is used to transmit the radio frequency signal corresponding to the composite signal.

The transmitter can realize the wireless charging and control functions of the receiver through a composite signal transmission path. The transmitter simplifies the internal hardware structure and reduces the cost of the entire transmitter.

From the patent introduction, Huawei’s “space charging” technology uses a special “antenna” technology, which is slightly different from the previous solutions of Xiaomi and OPPO, but it should be able to achieve a more flexible charging effect, and the charger’s The cost will also be reduced, which is more conducive to popularization.


The Links:   1DI400A-120 LM215WF3-SDB1