Thirty years of Hedong thirty years of Hexi, wireless charging was once the standard feature of Android flagship, Apple since the iPhone 8 after the whole series of mobile phones with standard wireless charging, and in the iPhone 12 began to open up a new way of play, the whole series upgraded to MagSafe magnetic wireless charging, a change in wireless charging many times placed in the bad experience of inaccurate alignment. Now the pressure has come to the Android formation, at the beginning, Android manufacturers are continuing to improve the wireless charging power, but it is difficult to compete with the magnetic wireless charge of the Apple formation.
In recent years, the Android formation has also tried to launch a charge to the magnetic wireless charging position, such as realme 50W MagDart magnetic wireless flash charge, Meizu 40W magic magnetic ice energy supercharge, Nubia Z40 Pro gravitational version, etc. On February 27, 2022, Xiaomi released the "small sensitivity + magnetic" wireless charging pre-research technology, magnetic wireless charging power up to 50W, and launched 50W, 30W two magnetic charger.
Xiaomi released 50W magnetic wireless charging technology
The technology display uses a Xiaomi Mi 11Pro magic version, as can be seen from the disassembly diagram, a wireless charging module has been added to the battery, and the module is surrounded by a full circle of strong magnets, and the middle is a wireless charging coil.
In recent years, although the wireless charging function has been used as an indispensable function on flagship mobile phones as standard, the common traditional wireless charging power is only 5W-10W, which is like a chicken rib. The receiving coil of the traditional wireless charging mobile phone terminal generally adopts a large inductive coil, and the impedance value is high and the energy transmission loss is large, resulting in a large number of temperature rises in the coil module, and wireless charging is very sensitive to temperature, which leads to a long period of time, and the wireless charging power is difficult to break through upwards.
In order to clear the way for wireless charging power to climb, Xiaomi uses a small inductance coil with only 1/3 of the traditional solution, which greatly reduces the energy transmission loss, and the temperature rise is also reduced accordingly, and the Xiaomi magnetic wireless charging technology supports the maximum 50W charging power, which is comparable to wired fast charging in experience.
Xiaomi Mi 30W ultra-thin magnetic wireless charge
The Xiaomi Mi 30W ultra-thin magnetic wireless charger uses a flat form factor design, but it can provide up to 30W wireless charging output. If you look at it according to the previous "experience", the power of this ultra-thin wireless charger is generally relatively low, and it is difficult to associate with the performance of 30W.
Xiaomi Mi 30W ultra-thin magnetic wireless charging outer edge is set up with 17 poly magnetic cores arranged in a ring, and the magnetic components on the back of the phone are aligned and attracted, supporting 360-degree rotation of magnetic suction, adjusting the angle at will. The surface is covered with tempered glass to avoid heat transfer to the mobile phone, and the shell part is made of aluminum alloy with efficient heat conductivity, with foreign object protection, over-temperature protection, over-current protection, electromagnetic field protection and other safety protection measures.
Xiaomi officially claims that the 30W ultra-thin magnetic wireless charge can be fully charged with a 5000mAh battery in only 86 minutes, while the original Apple MagSafe charger, which is also a thin and light design, charges the iPhone 12 equipped with a 2815mAh battery, and it takes up to 3 hours and 21 minutes (201 minutes) to charge.
Xiaomi Mi 50W active cooling magnetic wireless charge
Xiaomi 50W active refrigeration magnetic wireless charge will be efficient heat dissipation and high-power wireless charging into one, the internal use of semiconductor refrigeration technology with fans for active refrigeration, combined with the advantages of magnetic convenience, the wireless charging power increased to 50W, 49 minutes can be fully charged 5000mAh battery, this speed has caught up with some mobile phone wired charging speed.
The interior is equipped with 17 ring array poly magnetic cores and the magnetic components on the back of the mobile phone are aligned and attracted to each other, supporting 360 degrees of rotation magnetic suction, the back of the coil is a semiconductor refrigeration sheet, after applying the current, the semiconductor refrigeration sheet will have a temperature drop on one side, a temperature rise on the other side of the heat transfer phenomenon, the cold end is used to suppress the heat of the wireless charging coil, and the hot end is actively dissipated tropical heat by covering the heat sink + fan.
Charging head net summary
Xiaomi's small-capacity charging solution solves the problem of low efficiency and high heat generation of traditional wireless charging, and cooperates with the ring array poly magnetic core to create a 50W high-power magnetic wireless charging solution. In terms of accessories, 30W ultra-thin magnetic wireless charging and 50W active heat dissipation magnetic wireless charging were launched to meet the needs of two user groups of lightweight and portable, extreme performance. In terms of speed, Xiaomi magnetic wireless charging has greatly surpassed Apple, and the heat control is appropriate.
Xiaomi released 50W magnetic wireless charging will drive other manufacturers to join the magnetic wireless charging array, magnetic back clip battery, magnetic protective sleeve, magnetic vehicle equipment, magnetic bracket and other related ecological accessories will be more abundant, and jointly develop a better and more playable charging endurance experience for users.