Space charging technology mainly includes two core technologies: space positioning and space energy transmission. Firstly, the space charging pile needs to accurately detect the position of the mobile phone, and then send millimeter waves to the position through beamforming. Through the built-in antenna array of the mobile phone, the emitted millimeter wave is received and converted into electric energy to realize the function of long-distance charging.
According to the official introduction, the remote charging system independently developed by Xiaomi has 17 technical patents, which is a demonstration of Xiaomi's technical strength. So far, Xiaomi's long-distance charging technology can realize 5W long-distance charging of a single device within a radius of several meters. At the same time, it also supports multiple devices to charge at the same time (each device supports 5W), which is not affected by foreign objects and is not affected when using the mobile phone.
Xiaomi charging technology not only brings real wireless charging technology, but also opens up a new space for mobile phone wireless charging technology. With the continuous maturity of this technology, charging technology from space will become the standard for future smartphones. By then, the technology of charging from space will be more mature: higher power, longer distance, lower cost and lower price. Think about the wireless charging street lamps in Wuhan, and the future is infinite.
In addition to smartphones, smart homes and smart wearable devices will also support air charging technology. Space charging technology makes the living room wireless, and makes smart homes and smart wearable devices officially enter the real wireless charging era. At that time, there is no need to worry about finding a smart watch/ring charger. People who speak Xiao Ai can move freely and be online 24 hours a day. This is what smart homes should look like in the future.
Mobile phones use electricity quickly and have large battery capacity. The most critical and influential factor in mobile phone charging must be the charging speed. The charging speed is determined by power, and the charging efficiency is low, which undoubtedly becomes one of the most important obstacles between air charging and mobile phone charging.
Another big challenge of charging a mobile phone in the air is that the mobile phone may be in a state of constant motion, so the accurate positioning of the mobile phone becomes very critical. More accurate positioning can also significantly improve the charging efficiency and avoid energy waste.
In addition to technical difficulties, in fact, in the early development of air-to-air charging, there are still many doubts about this technology, some of which focus on whether it will have an impact on human health.
In the early years, many people even thought that cell phone signals and WiFi signals would radiate to the body and affect health, but in fact, these radio waves are almost harmless to people's health.
For example, millimeter wave, unlike α, γ and β rays, will not produce chemical reaction to the irradiated object, so it will not cause any DNA changes to the object. At present, there is no experimental data showing that millimeter wave radiation will bring negative effects on human health.
Today, Xiaomi launched the air charging technology. The first appearance of this technology is more conceptual. The commercialization of air charging technology in the field of smart phones still needs to solve a series of problems including safety, regulations and cost, and it is conservatively estimated that it will take several years.