ฝัง
- เผยแพร่เมื่อ 7 มิ.ย. 2024
- In this video the 3S 40A Battery Management System (BMS )module, all components is explained, battery pack preparation for 18650 Cell shown, how to charge, and tests listed below preformed. OverVoltage Protection OVP, OverCurrent Protection OCP, Undervoltage Protection UVP and Short Circuit Protection SCT have been demonstrated.
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Chapters of this tutorial
00:00 Start
01:27 Introduction
06:15 Components
11:27 Schematic Viewed
13:45 Battery protection (schematic)
15:37 Short Circuit Protection
17:56 Preparing Battery Pack
23:01 How to charge battery
26:06 Charge Current Test
28:23 OverDischarge protection test
30:52 OverVoltage Protection test
31:57 ShortCircuit Protection test
we have over voltage, over discharge, short circuit , under voltage protection
Visit resources page for this video: robojax.com/node/1073
please visit our website wattHour.ca
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#wattHourBMS
Hello, Free and I ship it for free. If you live in Canada or USA, I am giving away this DL24P 180W load and energy meter. Make sure to sign up for it th-cam.com/video/-UblSfUEY-0/w-d-xo.html
How about Papua New Guinea?
Got another one to give? 😂
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15:21 15:21 15:21
There is no way this guy isnt an educator in real life. This was too good.
I've seen many sketchy and questionable videos about BMSes and am happily surprised by the quality of your explanation and your review. Many thanks for your work 👍🏼
You deserve much more subscribers.
One of the most comprehensive videos on BMS. Thank you kindly.
Glad you enjoyed it! Please subscribe. I appreciate it and helps my channel grow. Thank you
@@WattHour Great and detail video! I currently building a 3s pack with samsung vtc5a ( max discharge 35A ). What wires should I use? 8awg are enough? Does this apply to the connections with the bms? Thank you!
THIS CHANNEL NEEDS MORE RECOGNITION !!! HE EXPLAINS IT SOOO WELL
Thank you. please share it with your friend via email and Facebook or other means.
Actualu, I try to seek every youtuber that build batterypack, but they didn't explain about bms as complex as you are
Hats of for you sir, excelent explanation :3
I am glad you found it useful. Please subscribe. I appreciate it and helps my channel grow. Thank you
THANK YOU SO MUCH for this great video! This is exactly the style of board I was going to use in a project for a chirstmas gift but wanted more information to make sure I use it correctly. Great detailed explanation! Thank you so much!
Very in-depth, probably the most in-depth analysis of this module on the internet. It was valuable to see the actual model number of the original design in this video (hx-3s-fl25a-a), because the module I was using was completely nameless, but identical, so it was hard to find info on it.
Earned a subscriber! I’ve been looking for instructions on building a custom 8s charger for 18650 cells and this is what I needed to understand the technical aspects of these boards!
Very nice video , I have used these boards for a few battery packs I build 2 years ago. They haven't failed me yet. I have the version you are holding at 6:35 and the battery terminals have a metal plate on them so you can spot weld nickle strips to them instead of soldering wires. It's set up so the strips line up perfectly to the cells to keep the strips short. I paid about $3 USD for each in a pack of 3. Very cheap.
Your explanation was really helpful for a novice like me in understanding the BMS. Tqvm!
Best explanation on TH-cam. Awesome video. Just subscribed
Lots of good info. Thanks for showing all the features, especially the short-circuit protectdion.
I am sorry to say your pronounciation confused me, on occasion but I thoroughly enjoyed your video because of your details and thorough explanations. As someone who is just getting involved in electronics experimenting after many years working in an unrelated field, I appreciate your explanations. Keep producing these videos!
Finally a guide for newbies, I wish I've found this earlier, very good and in depth explanation. Thanks!
Hello, If you live in Canada or USA, I am giving away this DL24P 180W load and energy meter. Make sure to sign up for it th-cam.com/video/-UblSfUEY-0/w-d-xo.html
best video about bsm's! comprehensive and accurate, yet simply explained.
Hello, If you live in Canada or USA, I am giving away this DL24P 180W load and energy meter. Make sure to sign up for it th-cam.com/video/-UblSfUEY-0/w-d-xo.html
I don't understand all but I can understand some. I want to say it's a great explanation. Thank you so much.
Beautifully explained, in detail and data given and cct demystified,………!
You have done an excellent job , . Many thanks …….!
I’ve been looking for this channel for a while now. I seen it playing but at the time couldn’t sub and later when I went to look at my history it was gone. Finally I have it saved now and subbed. Thanks.
this video was under my other channel youtube.com/@Robojax. I moved it here which is focused on Energy and chargers etc. you are welcome.
@@WattHour 😂 wouldn’t you know.....
I’m subbed there as well.
It was meant to be. ❤️ 😂
Awesome man, very thorough
Great video, explained like no other video I have seen so far. Thank you, Sir.
You are welcome!
Thank you for this video. I learned a lot.
Excellent presentation, Thanks
Great explenation! Thanks for the nice job!
you are welcome. Don't forget to subscribe. I really appreciate it.
Very well explained. Keep up the good work. Subscribed to the channel 😀
Outstanding video sir! Thank you so very very much for taking the time to make such a very good tutorial for everyone to learn from!!! Thank youuuu!!!!
Well explained. Thanks a lot Sir!
Thankyou for a very informative tutorial.
Very interesting and good explanations and nice experiments setups - THANKS.
This is a great channel, we must support this channel subcriber
excellent overview!
Really helped. Thank you so much.
Very informative. Thank you
This is was the best video about BMS! Thanks !
I was figured out about make a test recharging the batteries and consuming it at the same time.
My doubt was if BMS manage it or it's just 2nd Kirchhoff law. Of course with a power supply at the same level of the recharge voltage in BMS.
Hello, If you live in Canada or USA, I am giving away this DL24P 180W load and energy meter. Make sure to sign up for it th-cam.com/video/-UblSfUEY-0/w-d-xo.html
@@WattHour thank you very much. But i'm from Brazil. A little bit far away lool. Thanks for all attention!
Thankyou. I haven't been considering the current I supply when charging. I just connect anything that outputs the correct voltage. Car battery was on the list till you helped me see the light. I've got plenty of Buck converters with current adjust just gathering dust & waiting for a purpose like this.
Very excellent vlog . bro . I will salute your hard work. And the vlog is very informative. Liked from india. Perfect knowledge and very good picturisation . nothing is left very nice and elaborated vlog nicely explained.
Great vídeo. Greetings from Mexico.
good information
love from India🇮🇳
thank you man ;, realy very rich content and very educational so detailed , this was realy helpfull
thanks for detailed video
You are welcome
Great video thanks for this information
Awesome and amazing Video about BMS 🥰
Glad you liked it!
Nice video shot, thanks for sharing, keep it up :)
Clear explanation bro make more like this
Thank you, I will
Excellent video 👍
I searched eBay for "12V 3S 40A Lithium BMS" (without quotes) and results return "Standard", "Enhanced" and "Balanced", but don't know which I should be using. I'm thinking of putting together a few packs for use with my UPS's using the battery boxes on eBay (searched for 12V 10Ah 3S 7P). Thanks for the very educational video!
you are welcome. the more you pay the more features you get.
Excellent, thanks!
The best thank you for me is to subscribe to my channel. Your subscription is stamp of rating to my channel and others can find me too. Thanks
Appreciate the tests! What's a good discharge rate for the thermals for this board? I'm hesitant to buy this and find out I can't do 30A
Great video!
Hi, I don't know but I can't reply to you under other videos you posted. I have a page where I can see all comments on one page and I see your 4more comments under three videos but two of them don't allow me to reply. It does not show your name. your name is just a dot (.) and that could be the reason. Just wanted to tell you because I can't reply for most of your comments.
Awesome video!
You are welcome. Please subscribe. I appreciate it and helps my channel grow. Thank you
Thankyou for explanation.. 👍
Hello, If you live in Canada or USA, I am giving away this DL24P 180W load and energy meter. Make sure to sign up for it th-cam.com/video/-UblSfUEY-0/w-d-xo.html
Well done, thanks
Wow this channel is a hidden gem. Nothing like this on youtube.
2.3v is very low for over discharge protection. I've been trying to find a cheap board like this, but with higher discharge protection voltage (like 2.7-3v), but all of them seem to go so low that I'm worried for the lifespan of the battery
The discharge value is determined by the manufacturer. if they say, it will be okay.
@@BAMB00STER4EVER Exactly! 2.3 is way too low for most 18650s and all of these cheap boards have the same specs. I connected 3 batteries too a board similar and one cell is dead since it let it go way low. Another thing I did was put 2 low 3.4 (ish) voltage cells with a one that was 4.0v and it overcharged the 4.0v cell rather than stop charging it while the other cells caught up.
Thank you!
You are a genius 👏
Thanks from Bangladesh
Thank you very much.
You are welcome!
Thank you very much.very informative vudeo
You are welcome
Good video! thanks for all the detail. Question: Can you use fewer cells than the board is designed for? Can you only install 3cells on a 4 cell board and have it work properly?? Thanks
Very informative
Glad you think so!
Thank you :)
You are welcome. Please don't forget to subscribe. I appreciate it.
Great explanation, Helps a lot. I have one question, What is Q3 used for?? I'm wanting to try to build my own version of this type of BMS but some boards have that transistor and some dont...
I am pretty sure that your TH-cam upcoming star for exploring n testing... i subscribed.
Keep it up sir.
Thanks for the sub!
Thank you Mr. Mohamed for your helpful videos, can we connect these bmss in series
Great directions you've maid.
Would you be kindly tell how about to reduce batteries charge cycles amount?
How to unplug the load from batteries while the charger power supply is on and we need to power on the load from the initial power supply?
How to commence the charging only if voltage dropped to a precise value? For example I don't want to get my batteries charging everytime, but after a certain discharge (voltage drop)?
Thanks
Sensacional explicação.
Excellent video. I have noticed that some BMS boards have a temp sensor input.Can you elaborate on it’s application?
its actually a normally close temperature switch. it go open circuit when it temp rating is exceed. (usually 40C) this will also cause the main mosfet to turn off. after it cools the switch will again close and circuit will resume normal operation. If board does not come with temp switch one can be added but you need to remove the zero ohm resistor that is used to bypass the missing temp switch. it usually next to where temp switch is soldered.
Very helpful thanks
but wanted to know the no. of maximum cells the board can handle as is divided by 3 . 0 v to 4.2 v and 4.2 to 8.4 and 8.4 to 12.6
or is possible to doable the each cell by 2cells in series v will same but capsity will doabled
You are great at this. But i want to ask a dump question. Do we connect the charge discharge on the same p-/+ ?
Best video thank you ❤️ ❤❤❤❤❤❤❤❤❤❤❤❤❤
thank you
Where do you get the documentation for the device marking codes? That is also a hard task to achieve.
Love you from Bangladesh ❤❤❤❤❤❤❤❤❤❤❤
Very nice information
I am glad you found it useful. Please subscribe. I appreciate it and helps my channel grow. Thank you
@@WattHour Thanks
Hello, this video clip was very impressive, is it possible to put a similar clip about the work of the BMS cards for charging the batteries of the 20-volt parkside devices, please?
thanks for this! very helpful. I've been thinking about combining this with a lithium polymer pack for easy charging.
i do have one question though, if your input voltage is at 12.0 for example, will the battery still charge to the maximum of 12.4 volts? or would you need to raise the input voltage. thanks!
Do you have a link for the little volt meters ? Thanks
well detailed information. if i use this then i wont need dc to dc lm2596 step down buck converter right?? cause m using it to charge me 12v 9a lead acid battery using 20w solar panel and with full sun light it gives 19v dc. so if i directly connect the solar panel in this 3s 40amp bmc will it auto step down and charge and auto cut after battery fully charge?? plz plz reply
I realize your video is now over 3 years old but I still have questions. You showed three cells charged to the max and then applied 17 volts to show over voltage protection. I'm wondering what would happen if you applied this same voltage to a drained battery pack. Would the individual cells accept a charge at this point? Is there an internal voltage regulator that would drop it from the 17 volts to the appropriate levels for charging and then cutoff at maximum charge?
And what happens if one of the cells is internally shorted such as the middle battery in this case? Would the BMS still manage to charge the remaining two batteries? Would it simply cutoff all charging? Your individual battery volt meters, are they going to read correctly if the middle battery was shorted internally?
Thanks for the great explanation we needed. Just a small question, as this has overcurrent protection threshold about 200mV, if they add 0.025 ohm(two 0.05 Ohm resistor in parallel) resistor in series , the threshold overcurrent voltage should reach at 8A, then how does this provide 40A or more?
From what I understood, he mentioned the 40A current limit refers to either, (but I'm not sure which) the max charging input current, or the max charging current the module can deliver to the batteries, not the final module maximum output current, but I may be wrong on that.
8A you mentioned sounds more realistic, however, from memory, he did show the mosfets rated at 63A, so perhaps the max module output of 40A is reasonable.
Nice explanation on this topic. I have a question however: I'm using one of these managers to assist a pack of four batteries (4S) to feed a 14.4 cordless drill. There is a problem, the overcurrent (short) protection trips every time I pull the drill trigger. I wonder if I solve it by shorting the current sampling resistors (and shutting down the overcurrent protection) or there is a better solution for that. Could you please advise?
I have been playing with a knock-off set of 18/20 V Dewalt batteries. Dewalt seems to have the charging BMS in the charger rather than the battery pack. They have individual cell voltages as well as the main connections in the connector. When it is in the tool, there is no overcurrent protection such as there is in the BMS. Having the BMS in the charger cuts costs, for the sack of a more complex connector.
The video illustrates just how complex lithium batteries are and the real danger of not charging them properly. There have been a number of house fires locally due to charging scooter batteries.
The Dewalt battery pack has 5 pairs of parallel cells in series. So the BMS works with a pair of cells rather than one.
Try adding a 10-100uF capacitor across the output terminals it should help with the starting current.
when the overcharge was tested, how do we know if the controlled voltage was not a result of internal circuit in the batteries are functioning?
Is there any BMS with over temperature sensor and cell balancing added along with other features?
I made an ups with 3s 25a BMS and 6cells of 18650. My router supports 12v 1.5amp. Can I use a 12v 5amp adapter to charge the ups alongside to power the router.
5a-1.5a=3.5amp for my 3s battery pack (6*18650 batteries total (🔋🔋+🔋🔋+🔋🔋))
Is it alright to use 12v 5a charger? Is it going to quickly reduce the battery lifespan?
Hello, thank you for the video. I am using such 40A bms but with 10mosfets version (REV2.3 was printed on the back side). Suddenly I noticed that battery voltage is 0.4-0.6V higher than output voltage. The voltage difference is noticed between B- and P-. I tried to short B- and P- as some people suggest but no reaction, problem still exist. This was not always like that, at the begging of use it was fine. Have you ever experienced such problem? Any ideas how to solve it?
Thanks for the video. I am still struggling on what type of charger I should use for a 3S 6P Panasonic NCR18650B with a 3S/10A BMS. I have a 12V/3A & a 16.8V/3.3A charger, which charger is more efficient/suitable to charge the pack?
you can use this for 3S. the parallel does not matter. input I forgot what was in the video but it can be I think 15V or watch the video. the 6p means 6 cells are in parallel. so voltage does not change. it just adds the capacity. so it will last longer and it will get charger in longer time.
Hi. I have also a 3s bms but the output is less than the supplied voltage when measuring from the P+ & P-. Does it mean, one of the mosfet is dead? I noticed this issue with few bms I have used before after using for some time. I am curious what could be the problem. thanks
11:03 OC is not Over-Current protection output, but an Over-CHARGE output, which turns the MOSFET off to stop charging once the battery reaches a certain voltage.
Also, I have a BMS board (actually a protection board) which has its P- (negative output for the LOAD) taken from the Drain pins of the MOSFETS.
Hello, If you live in Canada or USA, I am giving away this DL24P 180W load and energy meter. Make sure to sign up for it th-cam.com/video/-UblSfUEY-0/w-d-xo.html
Thanks sir
Welcome
Can I add two cells in parallel in this bms to make a 3s2p pack, to increase capacity?
Appreciated it in making , but my friend would like to ask you if we want to make a 6v 3W 3A and connect it with 3W 8.97v 3A solar panel
So for some reason on my BMS and I have 3 brand new ones when I hook them up the voltage on the pack reads 12.50volts but on the B- B+ it reads 11.50v everything has been hooked up to balance wires and when I test the balance plug each series of cells reads 4.15v so the only thing that’s not the correct voltage is the bms. Can I move the wire from B- to the 0v side of the board? When I do that it reads the 12.50v but I’m not sure if this is bypassing the bms or not.
Does that BMS still dissipate the excess voltage if the charger is disconnected?
Thanks
Do I need to connect (weld, solder) batteries to the BMS board in sequence (from plus to minus or vice versa) how is it in the laptop battery so that the board does not go into protection?
Hi, thank you very much for your guidance, I want to know whether can we connect several BMS seriously on getting more voltages
Hi, you are welcome. you can't comment more. this is for 3S and if you connect more than 3, it will burn.
Hello, If you live in Canada or USA, I am giving away this DL24P 180W load and energy meter. Make sure to sign up for it th-cam.com/video/-UblSfUEY-0/w-d-xo.html
Much appreciate you making this lesson. Great for a beginner like myself.
Can i ask.
If i want to use a .Solar blanket + Solar charge controller. to charge the 12v 18650.
Because the solar can go up/down in current. Would the devices @22:38 still be good to limit current?
Hello, I mentioned that this module does not control the minimum current. it can only prevent the maximum which I mentioned and don't remember the value. Each battery has different maximum value and it you don't control it, it will reduce the life of battery and possibly cause fire due to charge over heat. So you should have a something that controls the current and you set your maximum current there before it comes to this.
The connector with s1,s2 is a temperature sensor input point.
Hi, very informative video, big thank you for the excellent content. The quality of you BMS looks good, can I ask the make and the cost of the 3s 40A BMS please and is there facility to monitor the status of the board? or do you have to buy a different board that affords that option and if so can you recommend some quality products, thanks and carry on with the vlogging you are doing a great job:)
Hi, you are welcome. This has no make or model. I have provided link in the description of the video. I am not sure how much a seller is truthful to ship the exact item photo they present. but our of 1000 purchase I have seen only 1 or 2 incorrect. in regards to the monitoring, Unless we make custom module I am not aware if there is such things. Good luck and stay safe
When you were putting ~17V into the BMS - was it cutting the charge/input off completely, or is it able to step down the voltage to the correct ~12.6V amount?
These units should shut down charge above 12.6v that's half the purpose of the board. Under discharge protection and overcharge protection.