3, this limitation doomed this wireless charging technology is only a transitional state. The real wireless charging technology must develop in the direction of "air charging", and if it is mature, air charging will fully replace wired charging. Most of the mobile phone wireless chargers on the market now are flat, and the mobile phone must be close to the charger.
4, can achieve no power contact design, to avoid the danger of electric shock. Disadvantages of mobile phone wireless charger: slow charging speed, low charging efficiency. Compared with the current wireless charging speed of wired is not fast, wired has high power and high current fast charging, and even 40W fast charging has appeared; However, the wireless fast charge is still in 5W, 10w low power. The cost of wireless charging is relatively high, and the phone and charger need to have wireless coils to charge.
5, the coil diameter used in the experiment reached 50cm, can not be commercialized, if you want to reduce the size of the coil, the receiving power will naturally be lowerDescend. Radio wave type. This is a more mature technology, similar to the early use of ore radios, mainly composed of microwave transmitters and microwave receivers, can capture the radio wave energy bouncing off the wall, while adjusting with the load while maintaining a stable DC voltage.
6, its advantage is that the conversion efficiency is high, but the charging distance is short, and it can only be charged one-on-one. Magnetic resonance can charge multiple vehicles at the same time, and no precise alignment is required. However, the energy loss in transmission is large. The advantage of automobile wireless charging technology is that electric vehicle wireless charging has no exposed connector and can be adapted