What is the principle of mobile phone wireless charging
Now the development of smart phones is very rapid, in the past, we did not dare to think of wireless charging, but now it has been rotten street, so why the principle of wireless charging is what? Let's talk about it today.
Let's first understand what is wireless charging technology, which is a new type of charging technology that uses near-field induction to send the electric power of the charging seat to the mobile phone. Since the energy is transmitted through coupling, there is no wired connection.
The current wireless charging scheme is no more than three.
1. Electromagnetic induction charging
This scheme is by far the most used scheme, is the use of the power supply side (charging seat) and the receiving side (mobile phone) generated by the induced magnetic flux for power transmission, this circuit structure in comparison with the other two to prime Minister simple, low cost. However, high efficiency also brings inconvenience, that is, the transmission distance is short, affected by the placement.
2. Magnetic resonance transmission
This is currently being studied a wireless charging scheme, but so far can not be commercialized, this is the resonator at both ends of the magnetic field resonance, to carry out power transmission, simply in a frequency vibration, they can exchange energy with each other, the advantage of this is the transmission distance is far, but low efficiency, which is why it can not be promoted one of the reasons.
3. Radio wave charging
This scheme is now a more mature scheme, composed of a microwave transmitter and a receiver, he can sense the radio wave energy bounced back by the wall, can adjust the voltage. This solution is more convenient, just install a transmitter in the wall plug, and install a receiver on the receiver.
In fact, wireless charging has a lot of uses in our lives, and we must be clear about its principle. Did you know you were using one of those
Wireless charging has appeared for so many years, few mobile phones support it, and few people rarely see it
The first reason is that the experience is very poor. We should also know more or less about the principle of wireless charging, when the first time to hear wireless charging, feel that the phone is free, no longer subject to the limitations and constraints of the charging line, there is no need to look for the charging line when charging, but this is not the case. In fact, wireless charging technology must be charged in contact with the wireless charging board, and it does not achieve the effect of free charging in the true sense.
And the wireless charger is large. We should also have seen the wireless charger on the Internet, its volume is very large compared to the wired charger, is not convenient to carry, and because of the large size to carry inconvenience, but also easy to squeeze damage, or accidentally fall off when taking, it is also very easy to damage, after all, large volume, high vulnerability.
There is also a lot of time in the process of charging, very people like to play with mobile phones, although the risk factor will increase, but many people feel that it does not matter, while charging while playing I think many people have done such things. Because wireless charging technology is based on the contact between the mobile phone and the charging plate to complete the charging, then charging while playing is obviously impossible to complete, so many people prefer to use wired charging.
Then there's the cost of wireless charging. First of all, wireless chargers must be bought by themselves, and the price of wireless chargers is much higher than the price of wired chargers, some mobile phone wireless chargers may not match all support wireless charging mobile phones, so in cost, is very high, for ordinary people basically no one will buy this charger luxury.
The most important point is that the charging effect is poor. We all know that the current mobile phone charging technology is very high, that is, we often say that fast charging technology. Although Samsung and Apple wireless chargers support 10W wireless fast charging technology, but relative to wired fast charging, there is obviously a gap, and now the mobile phone fast charging technology is basically 18W, 25W and even 40W charging technology, obviously in the charging time gap is too big, so few people will use wireless chargers.
Whether it is the charging experience effect, or the cost of the charger, it is a very, very big reason that few people use wireless chargers now. Although wireless charging technology has many flaws, but this technology is still very good, after all, the sense of the future is very strong, wireless charging technology further, may be accepted by more people in the future.