NoneWireless charging of mobile phones has the advantages of convenience, flexibility and protection of the interface, but it also has the disadvantages of low charging efficiency, slow charging speed and high cost. The principle of wireless charging is to use electromagnetic induction to transmit electrical energy from the transmitter to the receiver, which contains a transmitter and a receiver. The transmitter converts electrical energy into radio waves, which are then transmitted to the receiver via an electromagnetic field.
Disadvantages of wireless charging: Although the technical content of the equipment is high, the economic cost of the equipment is higher and the maintenance cost is large. Because of the realization of long-distance high-power wireless magnetoelectric conversion, the energy consumption of the equipment is high. Along with theThe greater the distance and power of the wireless charging device, the greater the loss of idle work.
First, the charging speed is slower than that of wired charging. Now mobile phones are popular fast charging, 40 or 50 watts, 50 or 60 watts of output power, basically more than half an hour can be charged to more than 80%, which is wireless charging can not be compared. Second, portability and versatility are worse than wired charging.Wired charging can simply take a charger, or even not take it, borrow a colleague or sweep a charging bank to meet the needs.
Although wireless charging is the research and development direction of mobile phone manufacturers in the future, the charging efficiency of wireless charging is still less than that of wired charging. Coupled with the charging trouble, the cost is too high, so that this once popular charging method has become less popular. But anyway, with the continuous change of technology, I believe that one day wireless charging can solve the problem of low conversion rate.
The first is the high price of mobile phones, salesBengao: The charger needs to have an electronic circuit to push the wireless coil, and the electrical device needs to have an electronic device to change the power, both also need to have a wireless coil, so the cost is higher than the direct contact.
2, first of all, the wireless charging efficiency is slightly low, the early equipment heating problem is serious, resulting in the back of the phone hot, manufacturers have to make compromises on power control. (Balancing safety and efficiency was a challenge in the early days of wireless charging.) Second, wireless charging bases often require additional purchases and are expensive, sacrificing portability. (The trade-off between extra cost and convenience is a big consideration for users. <3, convenience: non-contact, one-to-many charging compared with the general charger, reduce the trouble of plugging, but also to avoid the interface is not applicable, poor contact and other phenomenon, the elderly can also be very convenient to use. (2) Versatility: a charger can charge multiple loads, and a family can buy a charger to meet the needs of the whole family.
4, the shortcomings of mobile phone wireless charging although the technical content of the equipment is high, the economic cost of the equipment is high, and the maintenance cost is large. Because of the realization of long-distance high-power wireless magnetoelectric conversion, the energy consumption of the equipment is high. With wireless charging device distanceWith the increase of the ionization power, the loss of idle work will be greater.