Making A123 anr26650m1b battery pack, need help!

Batteries, Chargers, and Battery Management Systems.
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Pota   100 W

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Making A123 anr26650m1b battery pack, need help!

Post by Pota » Mar 16 2018 8:30am

Hello,

Finaly im making 6x battery packs 6s10p for ANR26650m1b. (3.3v, 2.5ah)
Each pack will then be 19.8v and 25ah.

I need to know where and what Components i need to buy to put each pack together. These packs can burst over 750amps and in totalt 120v together in series. So i believe i need to use 50mm2 cables. Im also going to put them in both series and parallel if i want to, so im therefor having 2x bulletsconnector on each positive and negative cable.

And how should i Connect these batteries, does someone have a schema or Picture?

Ok to sum it up :)
- Where can i buy the copper/tin to Connect the batteries together, and how can this be done easily? Must be thick and wide enough to fir the battery Connector under and also whitstand 750amp for 10sec.
- Can i use these to Connect the batteries together?
https://www.banggood.com/26650-Radiatin ... rehouse=CN
- If i can use above battery holder, how can i then wrap the pack together and how can i easily Connect each battery With the copper/tin
- I dont want BMS, i want some sort of LIPO alarm to tell me if one of the packs are, where can i buy alarm that can go lower volt than a LIPO alarm?

Any other tip? :)

Thanks alot for the help!

Best Regards

Thomas
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999zip999   100 GW

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Re: Making A123 anr26650m1b battery pack, need help!

Post by 999zip999 » Mar 16 2018 11:10am

A123 a great cell very heavy and big. You need a spot welder many many spot welder diy threads here on E.S. what do you need such a powerful battery for ?

Pota   100 W

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Re: Making A123 anr26650m1b battery pack, need help!

Post by Pota » Mar 16 2018 4:20pm

A very powerfull gokart :)

Yes, but where can i buy a cheap spotwelder? And what about all the other items?

Pota   100 W

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Re: Making A123 anr26650m1b battery pack, need help!

Post by Pota » Mar 16 2018 4:27pm


999zip999   100 GW

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Re: Making A123 anr26650m1b battery pack, need help!

Post by 999zip999 » Mar 16 2018 5:37pm

There are many many threads on E.S. on many different spot welders. Probably three on the first page of the battery section itself. With all the pros and cons of these different machines you must research and make these decisions yourself. I would start reading and see how well these different styles types spot welders work there are some real s***** Chinese ones that just blow up.

Pota   100 W

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Re: Making A123 anr26650m1b battery pack, need help!

Post by Pota » Mar 16 2018 6:13pm

Ill check it out :)

But what should i use to connect these batteries?
And how thick layers of copper/tin do i nees to support 750amp for 10sec. Like 50mm2 cable.

Any good pages i can buy these components?

999zip999   100 GW

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Re: Making A123 anr26650m1b battery pack, need help!

Post by 999zip999 » Mar 16 2018 11:15pm

First read what they are using a microwave Transformer, or a dual pause Android device read up read up on Paul sweet up on time read up on nickel strip tape it's all in there. Just bead enjoying in the right thread there's about 20 of them out there on spot welders in Endless sphere. Alone even more . Hundreds of pages of information already here on endless- sphere
Read read read.

I have A123 20ah piuch cells 4.5 years. 1,138 cycles at up to 90amps. Good cells just don't screw thems up.

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nuxland   100 W

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Re: Making A123 anr26650m1b battery pack, need help!

Post by nuxland » Mar 17 2018 2:35pm

I have done that but in one big battery :)
https://endless-sphere.com/forums/viewt ... 14&t=85912

Pota   100 W

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Re: Making A123 anr26650m1b battery pack, need help!

Post by Pota » Mar 17 2018 2:42pm

Hey Nux :)

Where can i buy the copper and batteryholders?

Do you think i can use this
https://www.aliexpress.com/item/High-Qu ... UAEALw_wcB

Thanks
Thomas :)

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nuxland   100 W

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Re: Making A123 anr26650m1b battery pack, need help!

Post by nuxland » Mar 17 2018 2:47pm

Pota wrote:
Mar 17 2018 2:42pm
Hey Nux :)

Where can i buy the copper and batteryholders?
Holder source is in my thread, but i think they were reqular ones. For copper I bought 1mx2m and 0,5mm thick sheet and cut out parts in watercutter.
Pota wrote:
Mar 17 2018 2:42pm
Do you think i can use this
https://www.aliexpress.com/item/High-Qu ... UAEALw_wcB
My pack is not welded, I'm using compression only :)

Pota   100 W

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Re: Making A123 anr26650m1b battery pack, need help!

Post by Pota » Mar 17 2018 3:33pm

nuxland wrote:
Mar 17 2018 2:47pm
Pota wrote:
Mar 17 2018 2:42pm
Hey Nux :)

Where can i buy the copper and batteryholders?
Holder source is in my thread, but i think they were reqular ones. For copper I bought 1mx2m and 0,5mm thick sheet and cut out parts in watercutter.
Pota wrote:
Mar 17 2018 2:42pm
Do you think i can use this
https://www.aliexpress.com/item/High-Qu ... UAEALw_wcB
My pack is not welded, I'm using compression only :)

How many layers did you use? Need to support 50mm2

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nuxland   100 W

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Re: Making A123 anr26650m1b battery pack, need help!

Post by nuxland » Mar 18 2018 2:00am

One layer. 0,5mm thick and 10mm wide per cell is series connection. For 10p it makes 50mm2 :)

Pota   100 W

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Re: Making A123 anr26650m1b battery pack, need help!

Post by Pota » Mar 18 2018 2:50am

Ok, so to understand you right. :)
1mm tgick and 10mm wide copper would equal 50mm2?
Can be 2p, 10p heck even 100p :P

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nuxland   100 W

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Re: Making A123 anr26650m1b battery pack, need help!

Post by nuxland » Mar 18 2018 2:58am

0,5mm thick and 10mm wide would equal 5mm2.
But this is for one cell only.
If you put 10 of these in parallel you get 50mm2.
And that is what I have.

Pota   100 W

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Re: Making A123 anr26650m1b battery pack, need help!

Post by Pota » Mar 18 2018 4:46am

So you mean a layer of 10 copper sheets?

Or a long strip consisting of 10 batteries?

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nuxland   100 W

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Re: Making A123 anr26650m1b battery pack, need help!

Post by nuxland » Mar 18 2018 7:10am

It's all in the my build thread ...
Picture is more than 1000 words :D
Image

Pota   100 W

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Re: Making A123 anr26650m1b battery pack, need help!

Post by Pota » Mar 18 2018 10:00am

I just dont know how one single strip of 0.5mm 10mm copper over 10 batteries can be the same as 50mm2. Wont the amp between two batteries then only be 5mm2. Or is there something i dont understand :P

999zip999   100 GW

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Re: Making A123 anr26650m1b battery pack, need help!

Post by 999zip999 » Mar 18 2018 6:15pm

You need to design your battery for your motor and important your controller and their needs . Meaning if you're going to draw a lot you should spot welder. And if you need more you got to water cool it.
Don't get me wrong I use a 220 amp cell at only 90 amps as it performs well for a long time. Sometimes it's how much money you going to waste. I clip coupons.
Have you priced out the cells the bus bars and the cell holders with the BMS or no BMS but need since wires to monitor cells and need a large capacity battery so you have a good control of Zero voltage. 2.6 volt. Or so ?

Pota   100 W

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Re: Making A123 anr26650m1b battery pack, need help!

Post by Pota » Mar 19 2018 4:40pm

I got hold on a Spot Welder and would like to try that combined with nickelstrip.

So will 0.5mm thick nickelstrips be the same as 0.5mm thick copper?
Or do i need more Nickel or less?

Pota   100 W

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Re: Making A123 anr26650m1b battery pack, need help!

Post by Pota » Mar 21 2018 6:52pm

Does somebody know how much Nickel (0.15mm thick 10mm wide) i need to make this 6s10p be compared to copper (0.5mm thick 1cm wide / Should equal 50mm2 cable thickness if used as picture bellow)

If i make it the same design as the picture?
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Driveless   10 mW

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Re: Making A123 anr26650m1b battery pack, need help!

Post by Driveless » Mar 28 2018 10:44pm

Subscribed.

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thunderheart   100 W

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Re: Making A123 anr26650m1b battery pack, need help!

Post by thunderheart » Mar 29 2018 12:39pm

nuxland wrote:
Mar 18 2018 7:10am
Picture is more than 1000 words :D
It's f#ckin' impressssssive, man!!!!!!
Cheers from Kaliningrad ;)
Miboxer C2-4000 smart charger/discharger review: www.youtube.com/watch?v=jrbJceNXv1g
XTAR DRAGON 4-slot charger/discharger review: www.youtube.com/watch?v=S6yVMsIuauE
Top 21700 cells LG M50 vs Samsung 48G: www.youtube.com/watch?v=KGJDogOG4zw

:arrow: All my reviews in one place: http://ThunderheartReviews.blogspot.com

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