How Qi Wireless Charging Works
ฝัง
- เผยแพร่เมื่อ 26 ก.ย. 2024
- I thought I would get into the fun physics of how wireless charging works. It's actually dead simple, or at least I think so. It's all about electromagnetic induction.
▼ Join the conversation! ▼
Twitter ▻ / thiojoe
Facebook ▻ / thiojoetv
Instagram ▻ / thiojoe
Website ▻ www.thiojoe.com
▼ More Videos ▼
How Can Old Movies be HD?: • How Can Old Movies be ...
Hard Drive Types Compared: • Hard Drive Types Compa...
▬▬▬▬My Channels▬▬▬▬
Comedy ▻ / thiojoe
Gaming ▻ / cachegaming
Extra ▻ / @thio
Get cool merchandise: thiojoe.spread...
Support me on Patreon: / thiojoe
---------------------------------------------------------
Sometimes I have to double check and make sure this is a ThioJoeTech video and not a ThioJoe video.
+imaninja187 Same!
If you're smart enough you don't have to though
Alright, I'm not smart then!
Lol same
+imaninja187 same
Thanks so much for this explanation. I never really thought about how this is possible, and most of the information in the video was brand new to me, and you explained it really well. It all made perfect sense. Thank you!
in case anyone wants to know: it's the magnetism itself (from the primary coil in the charging base) that causes the electrons in the copper wire in the phones secondary coil to move. This interaction of magnets and electrons can also be seen when you place a magnet next to an old TV screen (CRT - cathode ray tube, which is a beam of electrons). The important point here is that the primaries magnetic field is constant changing due to the Alternating Current (AC) going through it. This causes the electrons in the secondary coil to actually move (have a positional offset in sync with the strength of the changing field) in a back and forth manner, rather then at a fixed position by simply placing a magnet on it. This alternating magnetic field has the exact same effect as passing a moving magnet near a coil of wire. This motion of the electrons within the secondary copper coil is the cause of current flow (moving electrons). For those that want more details on the AC to DC conversion process, one method is to use a bridge rectifier, consisting of 4 diodes arranged in a square shape (look in google images for example). A diode will only allow electrons to flow in 1 direction. There are 2 diodes from each AC input each pointing in the opposite direction but on the other AC terminal the 2 diodes are reversed. The 2 top ends and join and the 2 bottom ends join. so whichever way the current is going, there will always be a pair of diagonally opposite diodes conducting. google falstad Full-Wave Rectifier to see a simulation of one in action.
Very good. Next vid should be about Santa Claus and the flying sleigh, please.
Again, it's so hard to take idiots seriously...I spy with my little eye...
qi is the life force all around us and the energy that fills the universe
that was actually something I never thought about. good work! one of the points I think you didn't make clear though is that what happens in the energy transfer. power from the wall goes to the charging plate and is converted to indirectional magnetism. when the coil in the phone comes within the proximity needed, the magnetic field focuses and excites magnetism in the phone. the phone coil then converts it back to electricity. also I have studied the technology and have written a paper on how it may not be able to advance in efficiency for a long time. not really sure what to do with it though.
Awesome video, cool stuff. How about a USB type C connector & USB 3.0 video explaining how it can have higher bandwidth, be split and do power vs USB 2.0
Wow! I like to think that I am really smart. I even went to college for electronics. I guess you just explained it better. Thank you!!! I finally learned something new! You are awesome Joe
Well explained. Other videos don't mention the appliance battery state, and how the inductive charge 'refreshes' the electron (power) state
Great video, simple straight and rich!
"Hey mom, i learned something today."
I know it's kinda randomly asking but does anyone know of a good place to stream new tv shows online ?
@Johnathan Reuben Flixportal
@Major Rhys Thank you, signed up and it seems like they got a lot of movies there :D Appreciate it !!
@Johnathan Reuben Glad I could help :D
Thanks, very much easy to understand explanation
So, would a strong magnetic mount for a phone disrupt the charging process if used at the same time?
This is more like an overview on how ALL wireless charging works. Qi in this case uses a communications protocol as well to talk to the charger. This is why a Qi charger is just pulsing the field now and then until you put something Qi-capable/compatible in it. Until then it has not gotten confirmation it is ok to output much power.
The receiving unit can ask for more or less power through this protocol and even tell the charger how far it has gotten on it's state of charge!
* crickets chirp * ..... WIIITCH! WIIITCH! BURN IT AT THE STAKE!
Do you recommend and educational resources with simple explanations like this? Thanks!
i didn't realise it was this simple and that makes me surprised that wireless charging hasn't been around for longer
1:02 Wire with current running thru it has a magnetic field (induced) around it, not actually an "EM field" (you included an Electric field, incorrectly).
I’m not a scientist at all but your explanation made perfect sense to me. Thanks!
Clear, smart and simple. Nice work! :)
I usually think of the electrons in a battery like water between two glasses and a straw that connects them
The for the video mate
Nice one
is it possible to be able to charge your phone over a small distance or area were the wireless charger could be plugged on the wall and you could just be sitting in a near distance...
Thank you! Good job explaining it in a way that's more understandable! 👍🏼
A good way to explain how charging a battery works is think of rolling a ball up a hill, when it’s up top it has a lot of potential energy and it loses it as it goes down. Then to charge the Potential energy it we have to roll it back up
BRO UR GORGEOUS AFFFFF
I leave now that much smarter. Thanks thiojoe!!! Thumbs up.
Thank you. Brilliantly explained.
so when you've used the cellular battery a few years and it doesn't hold the charge any more... why is this, its still going to the same place so how does it get there so much quicker?
thanks for the cool video. just beginning to learn about wireless charging because of a tech job I took on and your explanation is easy to follow also because of the graphics.
Thanks for this video. It really cleared up my query of the science behind Qi chargers
so is this correct to say? : the wall outlet has AC, which is converted into DC by the power cord, converted back into AC by the qi pad, and then converted yet again to DC by the phone?
If the qi pad is connected to power trough a usb cable then yes, but if its connected directly to the outlet it just steps down the ac voltage and transfer it wirelessly
Easy and very clear for understanding! Thank you!
He is very very good at explaining this in simpleton terms and yet I’m still kinda confused
This was a relatively simple explanation and yet made things quite clear. Thank you! :)
It's a great video.
Froma design point of view, I'd make sure there is a tiny bit more space above your head in the video. Just a little slightly opinionated tip. But truly, the content was great! :D
Brilliant Thio. Can I assume then that if I apply iQ receiver to the back of my iPhone 6 I can use it in my Mercedes wireless charging area?
Thanks
Jim
Great video bro, really drove home that point at the end. haha. Thanks...really helped my explanation to my wife.
hi.. im interested in your video. could you please explain more specifically about how transformer, inductive coupling and reosnant work in wireless charger/ inductive charger
Real easy to understand bro! Great job
So then after a while, after many charge cycles it gets more difficult for the electrons to become more useful again?
I've read that modern cellphone batteries are more efficient than they were just a few years ago. Now the experts say that batteries actually last longer if you top them up frequently throughout the day. I've been using a qi charger on my samsung galaxy s7 edge for 2 1/2 years and going strong.
is it an electro-magnetic field or just an electro-magnetic wave (since it's triggered by alternating current ) that transfers energy (but not mass) in the phone ?
By analogy, when you listen to this vid, your ear drum moves, & although the sound travels at ~1000fps, no air molecules move from your speaker to your ear, only the vibrations. Similarly, the vibrating (alternating) current in the sending coil creates a big alternating field (magnetic wave), and the big alternating field creates an identical (but smaller) alternating current in the 'listening' coil.
just say air core transformer. btw will it charge on induction cooker and can i charge my phone trough the nfc antenna with zvs induction heater or some other shit. are there wave frequency limits
I only got a wireless charger today (because it is located on top of an alarm clock which I needed as my phone wasn't charging via USB and the alarm did't work). Anyway, I plugged in the alarm clock and my phone was still plugged into the USB cord and the charging symbol came on. The phone was on the night stand just next to the charging station. I thought maybe it was just my phone (it is in an otter box, so I don't know if that makes a difference) and I unplugged the USB cord. I put the phone on top of the charging station. The phone seemed to stop charging. I plugged the USB cord in and the phone seemed to start charging again. I haven't checked it as it hasn't been that long and it was only at 0%, but that seems weird - having the USB cord in and it charges on what is supposed to be a wireless charging station and yet it doesn't seem to charge without the USB plug at the wireless charging station. I don't know if the otterbox blocks the charge and somehow the USB cord works to help it with the charge. After all, the phone was charging with just the USB and maybe the charging port isn't clean enough for just the USB and the wireless charger helps because of the USB and the metal charging port?
very good stuff
great video
Batteries are a prison that produces power off of the sadness of electrons. That's dark.
awesome stuff brother. very education. keep this stuff up
This changes everything I’ve ever learned 🤯
its Chi (qi) btw i think?
It is
Well it’s not phonetically, or it would’ve been spelled “Chi “
Same word different variation in how they tried to put it in English letters I believe. I have also seen ki
Thanks Joe. Although i didnt get everything the first time watching this but this video covers thr gist of all the principles involved. I had to watch it 3-4 times (jumping back and forth to referring back to the diagrams in the beginnning) to get it.
AC current and DC current? Alternating current current and Direct current current. Wanna try that again, Joe?
I have an idea for a quick charge device.. could you use lithium ion batteries to pull in the electrical current in order to charge a phone? It’s just a quick charge. Maybe get your phone to 25%? Without it being plugged in? Using the same theory but with batteries?
Nice. Good video
nicely described. thanks
Keep it up strong 💪
Awesome explanation
Great explanation, thanks!
Do electrons have feelings?
You have to get them out of their shell for them to flow.. so maybe
Last time I asked them they did, about an year ago. 🤣
That would be a negative
Brilliant explanation.
I thought the electrons gets converted to photons and emitted as light by the LCD and heat as it run off charge..
ThioJoe making videos about tech that are real... also Marty is at my front door
usefull video to uderstand the concept
Thank you for the reminder
Thanks man this was really cool information.
WOW....He decided to tell the truth! Interesting ...Happy electrons...
how efficient is this compared to plugging it in?
I've read that wireless charging is slightly slower than wired charging.
Awesome job thanks man
Very informative.
I'm fucking jealous of your brain, REALLY +TheoJoeTech
Also I really enjoy these physics videos, haha
if i didn't already know this i would've thought this was another one of his slick prank videos
Can you plug the wireless charger in the wall and charge another phone wile the wireless charger in charging
Is there any energy savings using Qi instead of plugging into a charger?
No, it uses more energy.
Super interesting!
That is so Great. I feel like I have the physics cheat sheet now. The smoke & mirrors age is over. The Truth of the Good Life is now closer for all of us. Thank you so much ThioJoe,
Srs this taught me more than I could have imagined
What I wanted to know is how does Qi work and why is it incompatible with PMA. Surely inductance is inductance? All he explains here (in a round about way) is how a transformer works. We all know that part.
So is this why there are alot of copper rings on an old samsung battery?
GOOD !!
For a moment i thought it was a Linus video when i clicked on it.
Now the question is... if you had the positive battery and the negative battery seperated and a physical switch to stop current when the phone is off, would you get the most efficient battery ever?
+DarkDoesGaming I don't really know about this sort of stuff, but I think the electricity is created when the electrons make contact.
+DarkDoesStuff The phone is never fully off, because the battery must stay connected & supplying some power to detect the "ON" switch, which the CPU uses to turn on other circuits. There are many other ways to optimize battery life, such as reversing colors on the display so that it is mostly dark instead of bright (less light, less electric power used).
wont it create a magnetic field in the coil present in the phone??
thats still some magic right there
Shit it's so hard to take him seriously 😂
its real
Shit, it's so hard to take idiots seriously.
well, I think he made it more complicated. an engineer never takes electrons that seriously because we cannot measure them easily, so for engineers the current and emf matters. however the emf and current is a result of electrons actions.
This was the bes video i ever watched on youtube.
such an eye opener
What is better wiress charg or wire.
It depends on the charger, but typically wired charging will be faster.
Thanks!
That helped. Thanks! :)
Totally
first video that wasn't bullshit lol
Any wire carrying current creates a magnetic field around it.
So nanotechnology can move the electrons back with the same power of the battery making it last almost forever?
Visuals would have greatly helped, but I somewhat understood what he said.
Does this work for Android?
Amazing.
Next will be phones that don't need to be charged.
So that's why flat batteries don't lose weight... :P
Is there another way to rearrange the electrons? (Magnets maybe?) :)
like how they used qi meaning energy
what is the "energy"?
When the electron is stored, it has potential energy from the fact that it can be released and moved to another place automatically. When it arrives, the potential energy is gone and converted to heat or work, such as running your phone. Just like if you are holding up a ball, it has potential energy because when you drop it, it automatically falls to the ground, because the energy was expended to move the ball to the ground by gravity.
so in physical terms a stored electron is a small amount of magnetism?or brightness?
How do they fit that in that small phone (that didn't sound wrong asf)
MERCI
guys you really chose wierless charging over internet everywere you can get a portable charger that you can fit in your pocket and charge things as you walk around what about wifi huh