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Old 05-03-2017, 08:20 AM   #1
felix_fetche
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Default Battery Communcation Utility Project

Hi,

Here are one of the first results of my project:

https://www.youtube.com/edit?o=U&video_id=-oevROzBgAg

Intending to measure cells inside battery pack before to open the casing.

Be back with updates.
Felix.
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Old 05-03-2017, 11:50 AM   #2
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Your link doesn't work for me

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Old 05-03-2017, 01:15 PM   #3
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Yeah, link doesn't work. I think it goes to his account's video edit page.

I have chargers that monitor each battery cell in an electric model but they are only two to six cells. Each cell has its own wires to a separate plug the charger can connect to for monitoring. So, the battery pack has a power plug and a monitor/balancing plug. The dozens of cells in a Segway do not have that kind of wiring so I wonder how they can check individual cells without a voltmeter put on each one (case opened).
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Old 05-03-2017, 03:51 PM   #4
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I would guess he can't monitor individual cells either - Probably only the 23 groups of 4 cells in parallel

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Old 05-04-2017, 04:41 AM   #5
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here is new link:
https://youtu.be/-oevROzBgAg

of course not each cell, but 23 groups,
(23 raw values, scaled , but for the moment not offseted, working on it...).
and:
-average temperature
-four temperature sensors,
-state of charge bar graph,
-chemistry and Rev.XX,
-statuses registers, and so on...



Be back with updates!

Last edited by felix_fetche; 05-04-2017 at 04:53 AM.. Reason: update
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Old 05-08-2017, 12:47 PM   #6
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We have software that does this as well along with many other functions. It looks like your doing a great job so far!
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Warm Regards,
Jason Abel
Battery Builders / MTO Battery
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Old 05-09-2017, 06:26 PM   #7
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Hiello MTO,

Is only a beginning, I'm working on it, now i have implemented a touchscreen TFT display, the 20x4 was very poor for this application.
Basically is about challenge an ambition to do that, but on the other side i really need this tool in my workshop. Will implement charge/discharge function to integrate the current and calculate the real capacity of the battery, useful function when i have to sort the best or weakest batteries from a lot.
be back soon!
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Old 05-10-2017, 01:50 PM   #8
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https://youtu.be/VJa-NJ7qd3Q

New TFT Display implemented.
Next is the menu and a nice look, good page arrangement and alignment.
Most of the parameters are ready calculated and good to be displayed.
Cheers!
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Old 05-12-2017, 05:03 AM   #9
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New graphics
Attached Images
File Type: jpg IMG_0661.jpg (197.6 KB, 31 views)
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Old 05-12-2017, 02:16 PM   #10
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Nice display.

Take a look at the old Cellpro 4s lithium battery chargers FMA used to make (might still). It is just a circuit board with standoffs that hold a metal face plate/display with heavy clear shrink wrap around the whole assembly.

A nice sticker covered the face plate so it looked professional. No case needed (shrink wrap is the case) and easy access to the mode switch and cable connectors. I think that is how they made them when they were a start up.

Cellpro 4s pics:
http://www.bing.com/images/search?vi...x=4&ajaxhist=0

http://www.bing.com/images/search?vi...=17&ajaxhist=0
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