I present you EVAL v1.0

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compa

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Mar 29, 2021
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I was watching this and was thinking to myself, that all 96 slots are 18650, if for instance someone had larger cells such as 32650 or 46800 obviously you could change the slot out to handle the different size cell, can you program the parameters for the different chemistries such as lifepo4 for instance 2.5DC 3.2SC 3.6FC.

Of course you can evaluate the type of cells, you just have to change the holder. We have put the 18650 holder, since we only have 18650. The initial idea was to put a needle probe, but that meant spending more time creating an iron structure, and we value not investing that time at least for now.

The software can modify the discharge and charge voltage value. You can even study putting it as a parameter of options. It is currently fixed at 3V discharge and 4.2V charge.
 

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Bubba

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May 9, 2018
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301
Hello HoleRaven, at the moment it is in beta version (test), as soon as we have about 5,000 batteries evaluated and we do different tests to verify that the mAh are correct, we will study how to do the sales process, is that okay? Think that we do not want to sell anything that can cause failures or errors.
Wait ... you wired all that up but haven't checked if the mAh are correct yet? Brave... or Very confident.
Couldn't you have confirmed that with just 1 module then 5 modules then 10 modules etc. to test the maximum capability?

Looks very good so far and I am looking forward to where you go next.
 
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compa

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Mar 29, 2021
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Before mounting the 96 cell, I have tested with a 12 and 24 cell, but no PCB. The evaluation results have been super good !!!!

Those of us who are opting with the EVAL 96 cells also
 

HolyRaven

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May 16, 2021
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Wait ... you wired all that up but haven't checked if the mAh are correct yet? Brave... or Very confident.
Couldn't you have confirmed that with just 1 module then 5 modules then 10 modules etc. to test the maximum capability?

Looks very good so far and I am looking forward to where you go next.
I’m just an interested potential customer but after watching the video, you can discern that that this tester is actually made up of 48 individual modules connected to a set of controllers that provide data via a web interface, @compa can correct me if I’m wrong but by design you wouldn’t be able to 1 5 or 10 I mean you could but the timeframe becomes astronomical compared to just testing all 48 modules across the 96 ports at the same time.
 

compa

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Mar 29, 2021
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25
The 96-cell EVAL is composed of:

32 CADE PCB, each board allows to connect 3 batteries. 32x3 = 96
4 HUB8 PCB
1 EVAL PCB where the esp8266 is

The good thing about the system that you can connect 1 CADE or all 32 CADES. This is designed so that each one can mount the ones they need.

Although I am developing another board that will be SPLITTER, which will allow to connect more than 250 cells. But this is still under development.

Of course, the idea is that without having to change any plate, you can increase the EVAL to what you want to mount.

I hope I have explained myself correctly.
 

MBF Dan

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May 14, 2021
Messages
30
This is a very cool product. I was just wondering if their is a way to batch the cells so that the cells you are discharging are providing the power for the cells you are charging. With the number of cells you are talking the energy saving would be impressive.
 

compa

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Mar 29, 2021
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25
Thanks for the support.

There isn't. Since in this way the system is much more complicated. In addition to lengthening the processing time, since some cells would have to be unloading and others loading.

If I am thinking of putting a battery. Or else, make 2 EVALs, one connected to the other, and when you start the download process of one the other start the charging process. But a process will always be missing and you will have to use network light. That is why I choose a drum kit.

Well we have no problems, since we have solar panels.
 

emuland-metroman

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Aug 10, 2018
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195
great work. was workin on something similar, but no time to advance. i see only 2 limits : cell size (as another one already wrote) and chemistry limited to li-ion due to TP4056
 

compa

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Mar 29, 2021
Messages
25
The cell size is solved by changing the holder for a tweezers.
If I know that it is now prepared for 18650 cells, which is really what we needed, although we were considering changing the TP4056. But we also have little time to develop further.

Thanks for the support
 
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