EP 24 - Building a 2P10S Lithium Ion Battery Pack
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- Опубліковано 4 бер 2017
- Today I construct a 2P10S (2 parallel - 10 series) lithium ion battery pack. This battery pack employs the LG HG2 3000 mAh 18650 cell, and is constructed using desoldering braid. This battery pack is designed to perform in a hoverboard and is rated for 15 amps continuous discharge and up to 20 amps peak discharge. Total pack voltage range is 29-42V, and nominal capacity is 6000 mAh. The pack is internally fused at 25 amps.
Disclaimer: My experience building battery packs is limited, so I may make mistakes in this video. Additionally, desoldering braid is not rated for electrical continuity and is not recommended for use in battery packs without adequate testing. Spot welding should be preferably used to connect cells rather than soldering in order to reduce thermal stress when possible. Perform any actions seen in this video with proper equipment and at your own risk. - Наука та технологія
I jumped so bad when the board shut off at the end. lmao
you're the only person on youtube that has successfully build a hoverboard battery nice build.
Thanks! I appreciate it! :)
Great job, man! Really well done video and great information. Thank you.
JMP I'm your biggest fan, keep up the good work!
Thanks! Glad to hear you're enjoying the videos! :D
Trying to find an answer to my question here. Hopefully you see this. I am constrained for space and I need to run them basically 10 over 10 slight askew. Is it possible to connect 10 pairs of 2 parallel modules in series? So (++)(--)(++)(--) etc. Where I essentially have 10 battery pairs that are parallel, running in a 10 series configuration. Thanks!
Is there a pattern when hooking up the bms wires? I first hooked up all the P-,P+,C-,C+,B-,B+, from the bms to the battery, then when I started finishing the balance wires, I noticed little smoke was coming out of the bms. Am I supposed to wired the balance wires first?
good work!!! can you share a wiring scheme?? thanks.
Can you provide a guide to where each balance lead attaches to?
In general, the black lead is connected to the most negative terminal (B-) of the pack. The red lead adjacent to the black lead connects to the first cell-to-cell junction, the red lead adjacent to this one connects to the second cell-to-cell junction, etc. The last red lead should connect to the most positive terminal (B+) of the pack.
If you'd like I could schedule an overview of BMS installation for a future video as well!
That would be great. I'm struggling to work out 1st starting place and which way to go through the pack. It would help if you show each connection point and which lead on the BMS connector.
i want to build a pack xactly like this for a laptop battery to last about ten hrs can u help me pick a good battery the pack will stay in my car for most ove the time so i dont want it to overheat when not in use during the day (in the car).
Bronco Chamo If you're looking for high-capacity cells, here is a link to some good 3400-mAh cells: www.amazon.com/dp/B00DHXY72O/ref=asc_df_B00DHXY72O5279250/?tag=hyprod-20&creative=395033&creativeASIN=B00DHXY72O&linkCode=df0&hvadid=167129443640&hvpos=1o1&hvnetw=g&hvrand=13890622740676244184&hvpone=&hvptwo=&hvqmt=&hvdev=m&hvdvcmdl=&hvlocint=&hvlocphy=9030067&hvtargid=pla-305982328683. You will need to determine the number of series-connected cells based on the pack voltage. If you want even more capacity, you can connect an additional cell in parallel with each series-connected cell. Be sure your laptop battery comes with a BMS/charge controller with balancing capabilities. Lastly, these cells are rated for an absolute maximum temperature of 60 C (140 F), so I would not recommend leaving them in the car. Doing so will shorten lifespan of the pack considerably, and may even start a fire.
Could i make it like that just without BMS
The BMS is required to balance the voltage across all 10 series-connected cell pairs. Without it, some of the cells could become overcharged and could vent or catch fire. For very short-term use it will work without balancing, but beyond 10-20 charge cycles the imbalance will cause the pack to fail catastrophically.
Yes. U can build your own battery without a bms by using a lipo balance charger. I'm currently working on my 8 inch hoverboard with a modified battery. The batteries are gonna be 10s 5p and the cells are gonna be sanyo ncr18650ga 3500mah. Check own my UA-cam channel for more infor.
Does normal battery has fuse too?
I mean premade by hoverboard company.
Typically not, as the BMS generally includes overcurrent protection. I just added the fuse as an extra precaution, in the event of a fault in the BMS.
First