Beginners Guide to Processing 18650 Cells | Cell Database


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My Battery Database
#1
Hey guys, great forum here. My name is Brett I am currently living in Raglan, New Zealand (originally from Australia). I have been recycling batteries for a bit over a year now. I have created a Web Based Database where I can add battery types, batteries, battery packs, faulty batteries and discharge records. I barcode label every battery (except for the ones that fail initial tests, I still add the battery in the database with the fault code) and I use a barcode scanner to input and output the information of each battery. I am currently working on a bulk 16x Charger Dis-charger that has a barcode scanner attached and an Ethernet connection to the Database where it will be fully automated.

Ah bugger this is my first post can't post links ye will put it in a second one.  Smile

Cheers Brett
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#2
Welcome...

Did i see this barcode thing already a time ago somewhere? Or was it you? Like the idea very much...

I do have a bad memory Wink
___________________________________
18x 300Wp solar off grid and 10x 180Wp solar tracker grid-tie
10KW 3phase hybrid inverter. 25Kwh 18650 storage (for now)
My setup: http://www.diypowerwalls.com/t-Instant-powerwall
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#3
I am thinking exactly the same thing, Trying to find a reliable printer for pre-numbered bar-codes on polyurethane labels. I would love to combine this with my project and share datapoints.

I will be utilizing FERCSA's FCDMS design: FERCSA FCDMS


Some of the other threads pulling data are:

Pack Cycle Testing

Cell Testing

Would be wonderful to cumulatively get enough data points that a battery could be profiled in ~60 minutes with ~95% accuracy.
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#4
Checkout my stats page: http://vortexit.co.nz/battery_statistics.php

My youTube Channel: https://www.youtube.com/user/brettwatty101

(11-20-2017, 09:00 PM)wim Wrote: Welcome...

Did i see this barcode thing already a time ago somewhere? Or was it you? Like the idea very much...

I do have a bad memory Wink

Not sure mate, I did suggest it to NERDVille on YouTube. It is a bit tedious at the moment but once I complete my Arduino Charger Discharger it will upload all the stats automatically.

(11-21-2017, 12:45 AM)neurocis Wrote: I am thinking exactly the same thing, Trying to find a reliable printer for pre-numbered bar-codes on polyurethane labels. I would love to combine this with my project and share datapoints.

I will be utilizing FERCSA's FCDMS design: FERCSA FCDMS


Some of the other threads pulling data are:

Pack Cycle Testing

Cell Testing

Would be wonderful to cumulatively get enough data points that a battery could be profiled in ~60 minutes with ~95% accuracy.

I just bought a Label Printer from AliExpress and waiting for it to arrive. I am currently using A4 Avery Paper but it does not stick properly. Cheers for the links.
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#5
If you have some free time, please check your data against our cell database and let me know if you have any cells we're missing.
http://diypowerwalls.com/celldatabase.php

If you do, you just need to take two pictures of the new cells Smile
http://www.diypowerwalls.com/t-Cell-Data...nd-Updates
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#6
(11-20-2017, 07:56 PM)brettwatty Wrote: Hey guys, great forum here. My name is Brett I am currently living in Raglan, New Zealand (originally from Australia). I have been recycling batteries for a bit over a year now. I have created a Web Based Database where I can add battery types, batteries, battery packs, faulty batteries and discharge records. I barcode label every battery (except for the ones that fail initial tests, I still add the battery in the database with the fault code) and I use a barcode scanner to input and output the information of each battery. I am currently working on a bulk 16x Charger Dis-charger that has a barcode scanner attached and an Ethernet connection to the Database where it will be fully automated.

Ah bugger this is my first post can't post links ye will put it in a second one.  Smile

Cheers Brett

Charger update-

Temperature sensors configured
LCD 20x4 configured

No - barcode scanner or Ethernet yet
owitte, Korishan, Geek And 1 others like this post
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#7
Great idea! I am discovering that cell management is really important. I have wasted quite a lot of time by mixing up good and bad cells and having to retest and resort them!!
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#8
Hi Brett,
Nice work on your database and tester and overall process.  I started a thhread on using barcodes if you would like to share the model number of your ethernet scanner and how you get the barcode for a cell associated to the tester slot, and then follow the cell through the repacker processing.

Hrere is the link:
http://www.diypowerwalls.com/t-Barcodes-...ht=Barcode

Great work. One look at your database was enough to train me a new habit. I atarted sorting my cells by model and factory mAh so I can process the stronger candidates first.
Regards,
Gary G.

Just starting out... One Opus tester with some parts on order to build a larger system.

Join DIY Powerwalls today ==> http://www.diypowerwalls.com/member.php?action=register&referrer=7349
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#9
(Yesterday, 02:01 PM)SecondHandPower Wrote: Hi Brett,
Nice work on your database and tester and overall process.  I started a thhread on using barcodes if you would like to share the model number of your ethernet scanner and how you get the barcode for a cell associated to the tester slot, and then follow the cell through the repacker processing.

Hrere is the link:
http://www.diypowerwalls.com/t-Barcodes-...ht=Barcode

Great work. One look at your database was enough to train me a new habit. I atarted sorting my cells by model and factory mAh so I can process the stronger candidates first.

Hey mate,

I barcode each battery before testing. I group each battery into Model Type and scan into a CSV/Text file then import it into my database via a PHP script. Currently I am manually entering the discharge record through another CSV "Barcode,mAH" but the current charger I am building will have a barcode scanner so it first check if there is a battery in the slot then it will prompt for the barcode to be scanned. It will check the database if the battery barcode exists in the database then it will get the cutoff discharge voltage. It charges the battery, tests the mill ohms resistance, rests the battery, discharges the battery, recharges the battery then uploads the data to the database (DischargerID, milli ohms, capacity mAh, Highest temperature variation, fault code if faulty).

The Ethernet module I am using is a W5500. I am using a USB Host shield to connect to the USB Barcode scanner.

Cheers,
Brett
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#10
(12-07-2017, 09:03 PM)brettwatty Wrote:
(11-20-2017, 07:56 PM)brettwatty Wrote: Hey guys, great forum here. My name is Brett I am currently living in Raglan, New Zealand (originally from Australia). I have been recycling batteries for a bit over a year now. I have created a Web Based Database where I can add battery types, batteries, battery packs, faulty batteries and discharge records. I barcode label every battery (except for the ones that fail initial tests, I still add the battery in the database with the fault code) and I use a barcode scanner to input and output the information of each battery. I am currently working on a bulk 16x Charger Dis-charger that has a barcode scanner attached and an Ethernet connection to the Database where it will be fully automated.

Ah bugger this is my first post can't post links ye will put it in a second one.  Smile

Cheers Brett

Charger update-

Temperature sensors configured
LCD 20x4 configured

No - barcode scanner or Ethernet yet

Hi Brett,

nice work so far, congrats. The temperature sensors on your pics, are those DS18B20 1Wire-Bus? If so, what's your experince with more than 10 on a bus? Do you use the parasite power mode? I'm planning to use them for my next battery pack generation and will have 25-100 on one bus...

Cheers
Oliver

Cells tested: 4338 (overall: 8281 Ah, average: 1909 mAh)
Cells in production: 2240 (overall: 4704 Ah, average: 2100 mAh)
Powerwall config: 7s320p, 672 Ah, 16 kWh
What's left: my current grid consumption

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