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#1 |
Member
![]() ![]() ![]() Join Date: Mar 2010
Location: Baia Mare, Romania.
Posts: 166
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![]() 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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#2 |
Member
![]() ![]() ![]() Join Date: Jun 2016
Location: Ocean Springs MS
Posts: 242
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![]() Your link doesn't work for me
Don |
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#3 |
Member
![]() ![]() ![]() Join Date: Dec 2016
Location: USA
Posts: 168
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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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#4 |
Member
![]() ![]() ![]() Join Date: Jun 2016
Location: Ocean Springs MS
Posts: 242
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![]() I would guess he can't monitor individual cells either - Probably only the 23 groups of 4 cells in parallel
Don |
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#5 |
Member
![]() ![]() ![]() Join Date: Mar 2010
Location: Baia Mare, Romania.
Posts: 166
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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 03:53 AM.. Reason: update |
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#6 |
Member
![]() ![]() ![]() ![]() ![]() Join Date: Jan 2008
Location: York, PA
Posts: 644
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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!
__________________
Warm Regards, Jason Abel Battery Builders / MTO Battery |
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#7 |
Member
![]() ![]() ![]() Join Date: Mar 2010
Location: Baia Mare, Romania.
Posts: 166
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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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#8 |
Member
![]() ![]() ![]() Join Date: Mar 2010
Location: Baia Mare, Romania.
Posts: 166
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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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#9 |
Member
![]() ![]() ![]() Join Date: Mar 2010
Location: Baia Mare, Romania.
Posts: 166
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![]() New graphics
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#10 |
Member
![]() ![]() ![]() Join Date: Dec 2016
Location: USA
Posts: 168
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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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