Lithium Battery Cell Balancer Explained charger 18650 and BMS
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- Опубліковано 25 лип 2024
- How Cell Balancing works and how to use this BMS Lithium Battery cell balancer .
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Jump to different section of video by clicking on the time:
00:00 Start
00:53 What is a cell balancer
06:21 other Charger Balancers
09:18 How and when to use
11:27 Demonstration
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Related videos:
3S 40A Balanced BMS Charger: • Video
1000mA USB Lithium charger: • Video
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great video and explenation ;) will definetly use one of these balancers for my 12v 18650s ;)
Thank you so much! Video is very useful!
Thank you for the excellent demonstration.
I think there is lot of misconception regarding the function of BMSs on the internet. I always though that the balancer keeps the same voltage on each cell connected in series no matter what state of charge they are in.
Thank you very much for clearing this up for me.
You are very welcome. I am glad you found it useful.
superb explanation !!!!! thank u
Herzamanki gibi mükemmel bir video olmuş. Her saniyesini keyifle izledim.
Çok teşekkür ederim. Onları sevmene sevindim.
Another great video!
Thanks.
Thanks Robojax for a top presentation. I was educated and entertained.
My pleasure. Stay safe.
You are a genius and a gifted teacher
so how can we use this ?? add this to a bms with no balancer ?? i have a 4s 40A bms enhanced version without balance ..can i solder this to the bms ??
Can you review the 5 amp active balancer capacitor type
خسته نباشی احمد جان عالی بود
سلامت باشی . این هم مجرای فارسی من
youtube.com/@ilmofan?si=XcO6kmPs2n2lxsZp
I am a beginner in this topic. You have excellent videos and they are all very informative. I watched the full length of this video and you said that this balancer when used should not be connected to a charger. What can you recommend to use as a balancer at the same time a charger with OV, OC, UV protection features? Sorry for the newbie question.
before coming to this, you should have watched the charging process. I have so many videos, but here is one ua-cam.com/video/0mOqpCfAdy4/v-deo.html where you learn how charging works. if you want to know how battery protection works, then check this out ua-cam.com/video/3dwA8A8VrrE/v-deo.html
Is there a way to changing the balancing voltage on these balancers, by replacing the R5 resistor maybe?
No you can’t change it. I had to watch the video yo reply. There are different version of the chip for different voltages but you can change them using a resistor
Thanks for the effort in creating this informative video. I am searching for how BMS balancing works and your video gave me a very good concept. In your video, you demonstrated how the balancing works and showed the 66mA current for one battery. Do you know how much would be the current or how it would flow when two batteries (say, battery 1 and 2 which are next to each other) are doing balancing? How much would be the current value and what are their direction on B0, B1 and B2 lines? I am new in learning electronic so please forgive me if this is a dumb question.
Here is the full details on my other channel. Please subscribe as I need that channel to grow so I make more videos ua-cam.com/video/QNENyu97w2A/v-deo.html
When battery1 and battery2 are being balanced, I believe B1 and B2 lines would both carry 66mA. Then, where do these current go? Back to the batteries via B0? If yes, then B0 would be -132mA and -132mA would then go through battery1.....it doesn't make sense if this is the case. Anyone can help to answer this?
@@robojax Subscribed. Look forward to more informative video!
Great video nicely explained. Thank you.
Could you please explain how to connect charging module and balancing module in to a 3S battery pack
then what did I explain this video?
@@robojax couple both modules as a 1 circuit
Dear Robojax. I have a question for you please. I am trying to use the same 40A 3S balancing board on my 3S pack. It has 43 Ohm balancing resistors also. My pack is off balanced and C1=3.6V, C2=4.1V and C3=4.0V. When I supply the charging voltage (12.6V), the C2 reaches 4.2V after some time and starts dissipating heat through it's balancing resistors. At this time, the charging is also becomes OFF and the other two batteries don't get a chance to raise their voltage. So, I am worried about how the balancing is supposed to work in a well off-balanced pack like mine. Can you please explain.
We have one channel for each cell. One battery should not affect the other.
@@robojax Hi Robojax, thanks for your answer. Does that mean, when one cell reaches 4.2V, it turns off "only that cell" and keep charging the other cells ?
@@kamaledirisinghe After several discharge-and-charge cycles the batteries will finally achieve balance. The cells that reach 4.2 V first will repeatedly discharge to the recover voltage (about 4.0 V) and so the whole stack approaches balance.
can you add a parallel resistor with the 62 ohm, to increase the balance current? say a 220ohm to get a slightly higher balancing current? it looks like the FET would be able to take it.
no you can't. the resistor is connected/disconneced by a transistor/mosfet and all the current will pass through that transistor. The transistor has rearting for certain current and it will burn. unless you change the transistor to higher current value.
@@robojax hi. I have a question is If the mosfet handled the current so the resistor is not. Right?
So why its so bigger then other resistor
Amazing.
Explanation was very useful.
Sir I have question, I've been looking for the answer.
Does it support balance discharging, as it use to balance charge, because I have a 3s4p battery which I use for backup of my router, but I also want to add a mobile power bank board which uses 3.7 to 4.2 voltage, can I connect it's terminals with B- and B1 whare voltage are 3.7 to 4.2 (1st cell) while also using 12.6 voltage also for sometimes,also tell me if I do something like this and charge my stuff using that powerbank module then will it consume first parallel 4 cell or the whole battery pack by synchronizing with other cells in series. Please tell me , or please test this for me and others if you can.
I'll be very thankful to you.
And also one more thing.
it does not care about charge or discharge. when you connect the battery it starts balancing. You are welcome. Please subscribe. I appreciate it and helps my channel grow. Thank you
if i repair laptop battery and using brand new battery for replace old battery can i simple them balance without any electronic only connecting them in parralel and then replace cells?
Yes you can balance them. This is very slow. Here a video on my other channel on balancing using active balancer ua-cam.com/video/0yo4lzxENrk/v-deo.html
Can you add two 5 balance circuit board to make a 10 batteries balanced in series?
Yes you can
Nice explanation anw, -
so it usually called bms, right? & what's diferent with battery equalizer??
Hello, I have separate channel on energy and batteries.
here is cell equalizer/balancer video ua-cam.com/video/0yo4lzxENrk/v-deo.html and here is BMS video ua-cam.com/video/QNENyu97w2A/v-deo.html the current video is cell balancer/equalizer.
Can I connect in parallel another resistors for faster discharge and balancing?
No you can’t
Can i use this 8s board for 8s Lifepo4 battery?
Hi, no you can't.
When do the balance only boards start balancing? Most BMS only balance at near 4 volts, id like the balance to start early, maybe anytime it is charging, although I guess it is more efficient when the charge current is greatly reduced, at near full charge. I think anytime it is charging would be better, (* sorry you answered most of my questions,* )
If you watch it you will see the demonstration. I spend almost 2 days to make this video. The blancer starts at 4.2V. Watch it.
@@robojax He is looking for a balancer that starts balancing at below 4V.
What you want is called an "active balancer", they will take power from cells with more voltage and delivery it to those with less power. They also have the benefit of not balancing by wasting power via a resistor too.
And the active balancer inductor type
Can you do active balancing?
this is the main question that I made this video for. If you watch it fully you will know. I have spent almost two days to make this video. Studying, reading tones of pages and testing it.
Hi Ahnad, very interesting your channel. I whish to know if you have any project whitch charge a Li-Ion 18650 arrangement 1S 5P or more parallel Cells, using a different board from TP4056. Thanks. A best regards from Argentina
Hi, See our other channel focused on energy and battery ua-cam.com/users/watthour the channel is new and I have purchased lots of batteries and lab equipment to do experiments and post results.
@@robojax Thank you Ahnad
What does balancing a single cell actually mean? Isn't the point of balancing to even out the difference in voltages between cells in a series pack? If there's just one cell then what's the point of using a balancer? I'm new to working with batteries and want to learn as much as I can before even actually touching one.
you are right. when it comes to 1 cell, it has no meaning. Please watch this to learn about the charger ua-cam.com/video/0mOqpCfAdy4/v-deo.html or this video to learn about battery protection ua-cam.com/video/3dwA8A8VrrE/v-deo.html
that's means all of balancer power loss of all cell!
so it's passive cell balancer!
what's solution about active types cell balancer
Here is better solution. Active Cell balancer ua-cam.com/video/0yo4lzxENrk/v-deo.html
Can we use it as 2s balancer??
Please reply
Yes you can use it. just connect two cells.
@@robojax another help
Can u say why lithium cell is heating after charge it is a 2s battery pack with bms and no balance charge
It is a 18650 battery pack containing 4cells
2 in series 2 in parallel
So in conclusion, is this balancing module worth it or not (66mA version)?
I don't remember what was the value. to answer I have to watch the video. so you watch and get the answer.
It depends on the size of Batterie pack, the usecase, And also the price of the Module(Only Balancer or whith addet Protektion Features,... ) . If you only change it via an rc Balancing charger it isnt needet.
66 mah of balance in 4.23 is not very little it does not reach 10% of the capacity of the battery. To properly balance a battery it needs to operate at 4.1 volts at a current of 10% of the battery.
Where is turkish subtitle ????!!!!
😑😣
Güzel Türk dili dahil çoğu dile altyazı ekledim.
happy Ramadan Ahmad
Thank you Tommy. Ramadan Mubarak.
Please replace “charger” word in your video with the proper one, which is “BMS”.
Thanks you I just did
Can you add two 5 balance circuit board to make a 10 batteries balanced in series?
Yes