Beginners Guide to Processing 18650 Cells | Cell Database


Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Yuneec E-Go2 Battery Upgrade
#1
Hey guys, here I'll be detailing my experiences upgrading the stock battery on the ego2. Stock it's 7S3P. I'm going to be experimenting with 8S4P,9S2P and 9S3P, the first two packs are built and will get road tested this weekend. I'm using the LG MF1 cells from the ebay hoverboard battery auction. 
 

hbpowerwall and The-J-Man like this post
 CyberWall #1 DC2DC 7S80P 2300mAh avg Cell #2 DC2AC 7S80P 2200mAh avg Cell LG MF1
Chargers: 1xEV-Peak CQ3 400W 4 Chan(with DIY 6S cradle allowing 4x6S1-3P) 7x Foxnovo 4S  -- 20xTP4056
Reply


#2
Ok so that was a fun way to blow up the ESC. Everything was good until I applied breaks and then pop and magic smoke. I'm guessing something with the regen breaking went wrong. BMS and battery perfectly fine. Speed was awesome hit 18mph on the 9S, stock goes 13mph

9S pack in casing
 CyberWall #1 DC2DC 7S80P 2300mAh avg Cell #2 DC2AC 7S80P 2200mAh avg Cell LG MF1
Chargers: 1xEV-Peak CQ3 400W 4 Chan(with DIY 6S cradle allowing 4x6S1-3P) 7x Foxnovo 4S  -- 20xTP4056
Reply
#3
Ok so the IC I blew up is the TI TPS5450 its a 5A buck converter.

I"m not seeing why breaking, regen or otherwise wouldve affected this chip.
Anybody have any thoughts? 



TI 5450 IC Datasheet
 CyberWall #1 DC2DC 7S80P 2300mAh avg Cell #2 DC2AC 7S80P 2200mAh avg Cell LG MF1
Chargers: 1xEV-Peak CQ3 400W 4 Chan(with DIY 6S cradle allowing 4x6S1-3P) 7x Foxnovo 4S  -- 20xTP4056
Reply
#4
Replacement ICs are in

IC removed

Already blew up 1 replacement lol
 CyberWall #1 DC2DC 7S80P 2300mAh avg Cell #2 DC2AC 7S80P 2200mAh avg Cell LG MF1
Chargers: 1xEV-Peak CQ3 400W 4 Chan(with DIY 6S cradle allowing 4x6S1-3P) 7x Foxnovo 4S  -- 20xTP4056
Reply
#5
can't help sorry but looks like a cool project
Affiliated links below support forum & YouTube projects.
One click on any (or all) and I'll typically make 4% of the
value of the sale without costing you anything but a mouse click. 
Support in a weird way? Head to https://minergate.com/downloads/gui - download and install mining software on your pc sign in with admin@diypowerwalls.com Smile Doing this will warm your home, create a very small income for me & use a BUNCH of power - so don't do it!  
Reply
#6
Ok so without BMS it works without blowing up the chip, I tried 3 different BMS and all cause the chip to blow up on break. Can't really explain why, stock BMS doesn't seem special.
I'm left with a couple options, bms-less battery(no) BMS on charge & no BMS on discharge (unlikely), new controller(unfortunately yes lol)
It's pricey but a worthy investment I think, my current motor doesn't come anywhere near it limits, it can handle 60A cont,300A peak and my current motor is 15A lol, it can also be doubled up for dual motor
 CyberWall #1 DC2DC 7S80P 2300mAh avg Cell #2 DC2AC 7S80P 2200mAh avg Cell LG MF1
Chargers: 1xEV-Peak CQ3 400W 4 Chan(with DIY 6S cradle allowing 4x6S1-3P) 7x Foxnovo 4S  -- 20xTP4056
Reply
#7
Maybe this is a stupid answer since I don't really know anything about ICs. Your BMS isn't back feeding some weird voltage back into the IC that it doesn't like maybe?
Reply
#8
(06-26-2017, 12:59 PM)2146 Wrote: Maybe this is a stupid answer since I don't really know anything about ICs. Your BMS isn't back feeding some weird voltage back into the IC that it doesn't like maybe?

Not that I can tell, I tried 3 different BMS, that IC provides 5V power to the controller board from what I've traced
Once the new controller comes I'll get back to trying to make this one work, thinking of putting a buffer capacitor on the VIN, see what happens
2146 likes this post
 CyberWall #1 DC2DC 7S80P 2300mAh avg Cell #2 DC2AC 7S80P 2200mAh avg Cell LG MF1
Chargers: 1xEV-Peak CQ3 400W 4 Chan(with DIY 6S cradle allowing 4x6S1-3P) 7x Foxnovo 4S  -- 20xTP4056
Reply
#9
Can you use balance leads instead of bms and charge with imax or similar?
Reply
#10
(06-28-2017, 08:18 AM)Wattsup Wrote: Can you use balance leads instead of bms and charge with imax or similar?

I could but would still need under and over volt protection. It would also require modifying the battery housing which I want to avoid and having a 9s charger in multiple locations or carrying it around isn't worth it, imax is 6s, I could split it 4/5 but that would double charging time
 CyberWall #1 DC2DC 7S80P 2300mAh avg Cell #2 DC2AC 7S80P 2200mAh avg Cell LG MF1
Chargers: 1xEV-Peak CQ3 400W 4 Chan(with DIY 6S cradle allowing 4x6S1-3P) 7x Foxnovo 4S  -- 20xTP4056
Reply


Who read this thread?
77 User(s) read this thread:
accoelho (10-02-2017, 09:07 PM), Jordey Van Zelst (07-01-2017, 02:00 PM), rbrett (07-05-2017, 10:26 PM), maxmusmaarleyy3751 (07-21-2017, 04:36 PM), Stefaan De Ridder (09-02-2017, 08:37 PM), kazbach (06-29-2017, 03:43 PM), ismaildoganw (07-20-2017, 09:47 AM), brobertosdrky9990 (07-23-2017, 04:11 PM), mark sparkz (06-19-2017, 05:49 AM), clarorayen (06-24-2017, 02:53 AM), DrkHrs13 (07-08-2017, 11:58 AM), Mark Daniel Olsen (06-12-2017, 03:19 PM), MetalFang (06-17-2017, 05:29 AM), Hanssing (09-24-2017, 10:40 AM), grgorasswifta5390 (07-13-2017, 05:50 AM), Daggerzz (06-26-2017, 12:26 PM), jesusangel (07-23-2017, 10:21 AM), Chiptosser (07-23-2017, 11:14 AM), Power Up (07-18-2017, 02:56 PM), Inverted 18650 (07-26-2017, 05:23 PM), Tostaki (10-06-2017, 11:45 AM), Grumplestiltskin (09-22-2017, 10:07 PM), DarkRaven (09-25-2017, 12:19 AM), floydR (09-25-2017, 12:15 AM), Jon (09-24-2017, 07:46 PM), Geek (09-04-2017, 03:47 AM), al4sound (08-16-2017, 11:43 PM), KtB (09-02-2017, 07:07 PM), Eric Snyder (09-10-2017, 06:02 PM), bobbyyandxtay9391 (07-23-2017, 11:54 PM), Sun plumber (07-22-2017, 05:43 AM), Xander52 (08-01-2017, 03:16 PM), John.Siler (07-19-2017, 08:52 PM), brafi (07-29-2017, 07:59 PM), nevarm18 (07-09-2017, 08:00 PM), BlueSwordM (09-27-2017, 04:35 PM), Dan Lim (08-05-2017, 02:18 AM), aalexeyjunor7972 (07-03-2017, 10:45 PM), watts-on (09-24-2017, 10:28 AM), jdeadman (09-25-2017, 03:57 AM), badamaspetrovy3728 (07-13-2017, 03:10 AM), Alec_J (09-03-2017, 12:16 PM), egam (06-27-2017, 04:13 AM), Tristan Timmer (07-20-2017, 05:56 AM), eeesOap (09-23-2017, 12:36 PM), Scepterr (10-02-2017, 08:52 PM), Wattsup (11-07-2017, 09:22 AM), FERCSA (06-10-2017, 04:32 AM), A + A (09-24-2017, 11:57 AM), ruby2 (06-27-2017, 02:28 AM), coolfx (06-26-2017, 09:44 AM), Majorphill (06-27-2017, 11:08 AM), opus40 (08-07-2017, 03:14 AM), owitte (07-20-2017, 10:40 AM), Toochi84 (06-08-2017, 11:56 PM), daromer (06-26-2017, 01:28 PM), baelesyswifta798 (07-09-2017, 11:33 PM), 2146 (06-28-2017, 03:21 PM), wim (09-24-2017, 10:34 AM), kaits31 (06-23-2017, 07:43 AM), rebelrider.mike (09-26-2017, 02:04 PM), Tychipowerwall (06-17-2017, 10:07 AM), Kaspars Krumins (09-30-2017, 07:50 PM), milespitt3841 (07-09-2017, 12:01 PM), 1958 greyhound (09-18-2017, 07:32 AM), Jeremy Choy (07-23-2017, 04:58 AM), bgegorasjnr1337 (07-14-2017, 11:10 PM), Robert Baumer (06-09-2017, 01:08 AM), John (06-17-2017, 04:06 AM), annetaesift1959 (07-06-2017, 03:32 PM), The-J-Man (06-14-2017, 11:16 PM), aadamalittlea6744 (07-06-2017, 04:34 PM), typ49 (06-29-2017, 09:15 AM), frnandu (09-25-2017, 11:56 AM), gregrasshulzeay4081 (07-23-2017, 10:16 PM), robertosmarleya1702 (06-30-2017, 10:43 AM), hbpowerwall (10-08-2017, 12:09 AM)

Forum Jump:


Users browsing this thread: 2 Guest(s)