A123 AMP20M1HD-A Battery pack kit

Here's the eva BMS on 24s figured id share. This is just temp to test still need to figure out what the final product
is going to look like. This BMS is pretty large compared to the signalab. Hopefully it works out good time will tell.

20120805020942900.jpg


Need to apply some load then let the BMS charge/balance to see how it works.
 
ohzee said:
Here's the eva BMS on 24s figured id share. This is just temp to test still need to figure out what the final product is going to look like. This BMS is pretty large compared to the signalab. Hopefully it works out good time will tell.

Need to apply some load then let the BMS charge/balance to see how it works.

...

The BMS I ordered from evassemble was custom. It's 24s 100a 150a max.
Click to expand...

No indicator LED's I think you mentioned ???

Ought to be well matched for your 5404... :)
 
How you going with testing?
Is that the 150A version you ended up with? Yeh they're big boards. Even the 60A's i got are large.
I got the 20 & 24 and there's a heck of a lot of, what appears, wasted space on them. Or a standard for larger layouts too.
Did you manage to get any additional information? I havnt found much, only that if you connect outs and in's wrong, or balance leads at the wrong time in the set up you my have toasted stuff.

Be good to have a bit of a schematic so least got half an idea what exactly it is what we're dealing with and what possibly might go wrong.
Mine are still in there box in the corner sure i can see smoke and havnt even connected them :wink:
 
No testing yet still discharging so I can get it to balance/charge.

http://www.evassemble.com/pdf/BMS/Capacitor-24S-BMS%20instructions%20of%20connection.pdf

Happy to assist you in any way if I can let me know. Mine is all plugged in with no issues I can tell.
There's the diagram I went with. Decent instructions. Pretty much if you have used one bms they
are all pretty much similar in how you install them. Agreed on the wasted space. Need to build
something so I can put a load on it.

Yea no lights only bad thing about anything not signalab. the pretty lights make it so easy to tell
something is happening.

Correct this is supposed to be the 150 amp version tho I am not sure how I can tell. I may ask for some
upclose pictures of yours if you don't mind. The pictures on their website are just wrong. it shows
4 boards with 2 sets of 2 balance adapters which is also wrong.
 
Hi Ohzee,
Hope all is going well with up to now.
Your setup's similar to mine, got kit for 5404 too.

Thought i would extend voltage upward with more volts now and less amps with 2 x bms, but not sure now bms's will work without all cell positions in use, i'm being informed, eg18S won't work on the 20S board, doesn't sound right can you confirm?
Boards i have are AE-LBR25 REV A1 say top board and AE-LMD25 REV A2 bottom.

There might be unpopulated led positions on the board i noticed labelled LE and cell number could ask Michael for info?

Appears to be 14, look like the fets, on the 20S board and only 12 on the 24S hmm dont know as they appear to be for the charge/discharge common bus.

I think you could quite easily make the boards sit in a different arrangement, not sandwiched, i might even dis the current control section if possible or upgrade it if required seems somewhat surplus to my requirements anyhow unless its needed to protect against excessive balance currents, but can't really see that it would be likely for pcb lands size, dont even know why those fets lie down taking up all that space, maybe big is beautiful :p
The cap postions seem populated ok 19 & 23 resp',1 less as expected.
I can't even spot a processor of any sort and balancing switching fets could be small and hidden under all that resin.
The more i look at it the more looks like an everyday cap bms, unless the sophistication is through a novel change in hardware, but i'm no electronics eng' just technician level.
20120805_220521.jpg
 
ohzee, that looks very nice. Nice job on the pack. What amps you intend to pull from this pack max? I need to sort out stuff with youtube, the connection breaks as i have wimax.
 
Thought i would extend voltage upward with more volts now and less amps with 2 x bms, but not sure now bms's will work without all cell positions in use, i'm being informed, eg18S won't work on the 20S board, doesn't sound right can you confirm?
Click to expand...

I know that with Signal lab BMS you can short optos to get fewer channels but not sure about the type you have.
otherDoc
 
Thanks doc. No optos gonna test one Ta!
 
deVries said:
Agniusm has these available on sale again. Order before August 13th to get a kit. He only does small production runs, so you might have to wait a long time between runs. Order now if possible to avoid long waits. :D

Links: Main Info Here

For Sale Thread A123 AMP20M1HD-A Battery pack kit
Click to expand...

Nice ONE. Thanks for BOLD stuff in both threads :) Very involved.

Ohzee, thank you for liking my kit and appreciation.
 
OK I just dropped one too many little screws and ordered a box of 100 3mmx12 socket head stainless. These were about 4 bucks but 10 to ship them by the least costly way from UPS. BoltDepot is a really good place to order from since my last batch of the button head bolts were about the same cost. So I got spares and if you need a few let me know. I, however, do not want to get into the bolt business so try to do a better job than I do at finding bolts that you drop!
otherDoc who used to have the hands of a surgeon, honest! Not these days
Oh yeah! Since I'm a glutton for punishment I am thinking about ordering another 6S kit from agniusm. I have 2 extra cells and could probably buy 4 or 5 more fairly reasonable. That would give me 18S and more speed than I can handle! Hmmmmmmmmm.....................
 
docnjoj said:
OK I just dropped one too many little screws and ordered a box of 100 3mmx12 socket head stainless. These were about 4 bucks but 10 to ship them by the least costly way from UPS. BoltDepot is a really good place to order from since my last batch of the button head bolts were about the same cost. So I got spares and if you need a few let me know. I, however, do not want to get into the bolt business so try to do a better job than I do at finding bolts that you drop!
otherDoc who used to have the hands of a surgeon, honest! Not these days
Oh yeah! Since I'm a glutton for punishment I am thinking about ordering another 6S kit from agniusm. I have 2 extra cells and could probably buy 4 or 5 more fairly reasonable. That would give me 18S and more speed than I can handle! Hmmmmmmmmm.....................
Click to expand...

Sounds like hunger for speed, mmm...:) I need something faster myself as my Meduza scooter does 32kph tops. Have HS3450 + 24S cells and all bits, need to figure out what to build next "out of this world" Hows your second kit doing?
 
Sounds like hunger for speed, mmm...:) I need something faster myself as my Meduza scooter does 32kph tops. Have HS3450 + 24S cells and all bits, need to figure out what to build next "out of this world" Hows your second kit doing?
Click to expand...
[/quote]

About half way there, but much higher quality on my part. I'm using electrical tape instead of the paper for the masking of the tabs and I have all those extra little teeny button screws in case I drop one of them Unfortunately the larger bolts are easier to handle for me, and with the tabs folded they too come right to the end of the lower alloy block. I would use them esclusively and now am using them to hold the blocks in place while I screw the buttons 2 at a time , then remove the socket head and insert the button screw. It does get easier with practice. I think someone with steady hands and my little electric screwdriver could really make an assembly line business for those great cells.
otherDoc
 
agnesium you get about 9mins at 75amp in the video? is that correct? cut off voltage 2.7v ?
 
whatever said:
agnesium you get about 9mins at 75amp in the video? is that correct? cut off voltage 2.7v ?
Click to expand...

No that was second run. Someone here asked me to do 10 min test and i forgot about it so had to do second run.

Have built second 6S battery today. Was making a jig for drilling tabs but it didn't work out. Need to make my punch.. Anyways here are some photo porn as you would say... :
IMAG0276.jpg

IMAG0277.jpg

IMAG0278.jpg

IMAG0279.jpg

Notice drilling errors, but it works, figured would try without precision as the jig did not work. Was trimming tabs without measuring:
IMAG0280.jpg

Just enough to squeeze abolt:
IMAG0281.jpg

Sufficient protection for me:
IMAG0282.jpg

IMAG0283.jpg

Some real porn:
IMAG0284.jpg

IMAG0286.jpg

IMAG0287.jpg

Charging using iChargers balance charge option:
IMAG0288.jpg


[youtube]0EXfkPQoSfM[/youtube]
 
Well done with my second 6S pack except for the details. I was a bit more difficult than I planned afer doing pretty well because my nailpolish failed on one trace and when it hit a tab, poof. So I soldered a jumper in and it works fine .All cells locked in place and show up fine on the Cell log.. Now to charge it with the new Meanwell powering the Hyperion. woo who!
otherDoc
 
docnjoj said:
Well done with my second 6S pack except for the details. I was a bit more difficult than I planned afer doing pretty well because my nailpolish failed on one trace and when it hit a tab, poof. So I soldered a jumper in and it works fine .All cells locked in place and show up fine on the Cell log.. Now to charge it with the new Meanwell powering the Hyperion. woo who!
otherDoc
Click to expand...

Ouch. I think you doing it wrong :) The way i do it is laying it flat on the bottom, kit facing me. Then i lift the cell (starting second cell) and put threaded block while holding it and tightening bolts. It does not go anywhere.
 
I pretty well was doing that but one tab would not go in correctly and I slipped and it hit the next to last trace. Poof! butI do know how to fix stuff and it worked out fine. I agree working on a flat surface may work better than my wooden clamp method. I had to work on it with the circuit board on the bottom to solder the trace and I attached the rest of the battery to a brick with big zip ties. It worked! I think a good part of my problem is bein' old and a bit shakey!
otherDoc
 
OK, got another 6S assembled, 1 more to go, missing two cells. Here is a video on today's work, perhaps it will give someone some ideas:
[youtube]ONvz4hFsPK8[/youtube]

Here is a video for deVries and docnjoj on balance connectors, how easy they are to work with:
[youtube]WRlwmwr3wEw[/youtube]
 
I like your new gadget, agniusm. I would have used delrin or nylon for the body since I am really good a frying things. Am charging up the new battery (6S) to match it before I connect the two for 12 S. Pictures later.
otherDoc
 
I would love to see that video with the euro balance connectors since my 2nd one came out perfect. No shrink tubing and careful soldering made them work fine. They are very tight initially and needed a bit of wiggle with a tiny screwdriver to free them up. They do grip much better than the HXT ones and look a lot stronger. Just in case always check connectivity and conductivity when you assemble any new connector.
otherDoc
 
So after doing some tests i would like to inttoduce copper to my kit. This involves higher cost, adding about 7USD per kit. This is due more than double cost for copper and manufacturing of the bus being slightly more pricy. This adds benefit on pulling 150amps. Tested today, looking good. Anyway, this could be an option. pics later
 
You must log in or register to reply here.

Similar threads

D
Migration from Lipo to A123 Lifepo4 battery pack
Replies
19
Views
3,274
miro13car
M
Back
Top