Why is wireless charging not attached to the transmitter and can not be further opened? This may be a balance between distance and charging efficiency under existing technical conditions. If it is far away, it may affect charging efficiency or not electricity. It may be one reason why wireless charging technology is not popularized at present. Now it is a gimmick that is more than practical, but it is believed that with the development of technology. Wireless charging will certainly be popular.

First of all, we need to know that wireless charger for iPhone is carried out in the form of Qi standard, using the principle of electromagnetic induction. The transmission side (charging pile) generates a magnetic field through the current flowing. The Qi module of the mobile phone (equivalent to the receiving end) transforms the magnetic field into electric current through electromagnetic induction.

The problem is, as the magnetic field gets farther and farther away from the field, the magnetic induction intensity will gradually decrease (or more and more weakly), so the distance will cause the magnetic field to be discounted and the charging rate will be reduced.

So it's the right mobile phone to charge the mobile phone, otherwise, you might be slow to charge or even be able to recharge it. Let's look forward to a new generation of wireless charging. After all, the current wireless charging technology is not perfect.

Because of the current technical constraints, the wireless charger is still able to be charged on the emitter. If it is too far away, it can not be charged. At present, the wireless charging is better. It should be apple, it can charge multiple devices at the same time and can display the charging status of other devices through the mobile phone, but it is expensive. When you charge and play with the mobile phone, you know, I would be more convenient to use the charging line.

At present, the mobile phone market or the wireless charging market is not too mature, it is not as wide as wireless networks, and the electromagnetic wave of the wireless charging device attenuates as far as the distance is. So even though some phones support wireless charging, there is still a data line charging port.

If we want to recharge some distance, we can do it. It's OK to reach 3 meters now, but the other problem is that the volume of the charger is increasing, which is contrary to the convenience and portability of our design.

Another solution is to use the more electric current to produce a stronger electromagnetic field for long distance transmission, which is more unsuitable. Our community will worry about the radiation problem because of a remote transformer, let alone a high-power radiator around you.

So, I think these two points are enough to explain why wireless charging cannot be further opened.

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