Wireless charging for mobile phones
Chargins a smartphone is associated with cables, but it is not the only option.
The induction phenomenon allows the energy to be supplied to the battery wirelessly. How to
charge the phone like that? You will find it out in this presentation.
The Wireless Power Consortium is the universal, actually the only one worth noting the
wireless charging standard. It is the entity developing and promoting the Qi standard which is
already commonly known. Yet, few years ago we heard about the efforts of A4WP (Qualcomm
and Samsung), where the method of magnetic resonance charging was used. PMA, however,
dealt with electromagnetic induction.
How does wireless charging work? Qi standard
The essence of this method lies wireless charger that has to be plugged in the power source
and put on a desk, for example. It is equipped with a coil, which is responsible for generating
the appropriate electromagnetic field. It works similarly on the principle of fluorescent lighting
near high voltage lines - heavy cables through which electricity with huge voltage flows are a
source of strong electromagnetic field. The electric charge "accumulates" in the air, which is
induced to its receiver ( in the case of a fluorescent lamp - neon or argon), thanks to which,
standing directly under the transmission line, we obtain a "free glow".
In the phone, we have another coil, which by the induction receives energy from the generated
magnetic field and it is converted directly to the current flowing straight to the battery. Of
course, the phone must comply with the accepted standard, which is expressed through
certification and the use of a suitable coil, and systems responsible for receiving energy in this
way.
Wireless charging is conventient, but only in a few applications
Wireless charging of mobile phones is associated with a loss of energy as a result of
transforming the current into an electromagnetic field. If it was possible to charge devices over
long distances, the losses would be so large that it would not be profitable any more. Therefore
it is possible only after applying the device to a special induction hob. Only in its area
compatible with the standard the device will start the charging procedure .Therefore, a certain
limitation is that the phone whose battery is replenished is a wireless way, rather, we can not
use. Strictly speaking - we can, but this process will be interrupted
If the disadventages of wireless charging do not discourage you - trying this solution is highly
recommended.
Ideally, if there is an induction plate integrated with the smartphone shelf in the car. But yes
not only this scenario of using wireless charging is convenient. As well, this charger can be
placed on a desk or on the bedside table. If the noticeably longer charging time and less
convenience are not discouraging - it is worth a try.
- Do you think wireless charging is useful?
- Would you buy an inuction charger?
- How wireless charging could be improved?
The sources used:
Comments
devices at once. I would buy an induction charger especially one for multiple devices. I guess it would be cool if it would charge faster :)
I would not buy induction charger(in the development).
I don't know how to be improved :)
In my opinion wireless charging is very useful but It can be very expensive in Poland. It's the easiest way to charge our devices. I hate my phone cable because I always forget about that!
I would like to buy induction charger but firstly... I need to buy device which can be charged by that :P
About last question? I don't know how wireless charging could be improved. It's hard to say.
I would do so if my phone had supported it.
Improvement of wireless charging will come with its popularity i believe that it could be improved in interchangeability area one wirelesses pad or dock for every major gadget u use.
If i know that my phone will be compatible with this charger for sure i will buy it.
When i think about how this charger should be improved i think about charging speed but i'm not sure if it's major diffrence between the charging a standard charger and wireless. I rather think taht we should wait for adapt our phones to wireless charging options.
cost-effective only in about 5 years or even more, everything depends on the world trends, for example, nowadays the most famous world trend in programming is machine-learning and making AI. So if people would start investing in wireless charging system it we would have them way faster than I expect.
I'm not one of Thomas Edison haters, but I do think that we would have a more efficient energy system if Tesla's ideas were persuaded instead of Edison's. Tesla pioneered the wireless electricity research using the findings of earlier scientists like Ørsted and Faraday. He built what is now known as Tesla coil that uses sparks to create high voltages and radio waves to carry the magnetic field. Using this Tesla coil he could wireless light up a bulb from across the room.
The wireless charging technology could be improved by building larger coils. We could charge our devices just by entering our houses.
I probably wouldn't buy it now, it's too expensive for a think that I can totally live without. It's not perfect in the current state and I doubt that it will ever be.
The thing that could encourage me to buy such charger would probably be a price drop. It would be nice to have something like that on the desk, but then again - not for the current price.
One thing, that can be improved it's basically speed of charging.
I think is useful, it could be using in place whew we put our smartphones usually like in car, office desk, night table etc.
Would you buy an inuction charger?
I would prefer that kind of charger that could be stick to a furniture, and take small amounts of place.
How wireless charging could be improved?
There a many ways to improve that, for example size, energy efficiency.
I also like wireless mice and headphones, but it's annoying when it comes to charging. And they can stop working at any time.
I think wireless charging can be very useful. Charging the phone or even the car will be much easier without the possibility of damaging the socket. This will allow you to safely load and lessen sensitive plugins.
I wouldn't buy an inuction charger now, but maybe I would by it when te technology will be improved.
Wireless charging can be improved by inreasing the speed of charging.
I don't think I will. I don't have smartphone which can be charged by wireless charger and it's not comfortable to use phone while charging with one.
I believe the first thing that needs to be improved is speed of charging.
2. At the moment I don’t need this, so I wouldn’t.
3. I have no idea, in particular, but generally it should work indefectibly so as we could rely on this. I guess more popular it is, more quality in working shall be achieved. Wireless tools and processes are our future, that’s for sure.
The technology itself might however have some interesting applications for short range data transfer. If you encode enough data into the coil power fluctuations, to achieve some decent transfer speed, the phone could load its battery and exchange data at the same time. I know we already have Wi-Fi and USB cables for that, but this could allow short distance undetectable (unlike radio wave base technologies) data transfer, so maybe some espionage applications :D
I hope that in the future companies will developed not only "fast charge" system but also "low charge". In my opinion it will improve the battery life.
I can't help to think if it's possible to have a charger that would work when I move around the house with my phone in my pocket without any side effects. I think that Nicola Tesla worked on something that could've helped. Too bad he died before finishing his work.
I think that as for now I wouldn't, because it is quite expensive and I've got a phone with long lasting battery, so charging a phone at night, while I'm sleeping is not a problem. But I would buy it as a present, because it is useful and technical good.
Of course it may be improved and it definitely will. Maybe charging surfaces will be bigger, as worktop, so while chopping an onion your phone will be charging?
One place I could think of right now is my desk, I would use a spot for charging my phone.
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