i2 Battery Communcation Utility Project

felix_fetche · 05-03-2017, 07:20 AM

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.

Don M · 05-03-2017, 10:50 AM

Your link doesn't work for me

Don

Pescador12 · 05-03-2017, 12:15 PM

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).

Don M · 05-03-2017, 02:51 PM

I would guess he can't monitor individual cells either - Probably only the 23 groups of 4 cells in parallel

Don

felix_fetche · 05-04-2017, 03:41 AM

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!

MTOBATTERY · 05-08-2017, 11:47 AM

We have software that does this as well along with many other functions. It looks like your doing a great job so far!

felix_fetche · 05-09-2017, 05:26 PM

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!

felix_fetche · 05-10-2017, 12:50 PM

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!

felix_fetche · 05-12-2017, 04:03 AM

New graphics

Pescador12 · 05-12-2017, 01:16 PM

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

05-03-2017, 07:20 AM	#1
felix_fetche Member Join Date: Mar 2010 Location: Baia Mare, Romania. Posts: 166	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.

05-04-2017, 03:41 AM	#5
felix_fetche Member Join Date: Mar 2010 Location: Baia Mare, Romania. Posts: 166	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

05-08-2017, 11:47 AM	#6
MTOBATTERY Member Join Date: Jan 2008 Location: York, PA Posts: 641	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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05-03-2017, 10:50 AM	#2
Don M Member Join Date: Jun 2016 Location: Ocean Springs MS Posts: 242	Your link doesn't work for me Don

05-03-2017, 12:15 PM	#3
Pescador12 Member Join Date: Dec 2016 Location: USA Posts: 168	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).

05-03-2017, 02:51 PM	#4
Don M Member Join Date: Jun 2016 Location: Ocean Springs MS Posts: 242	I would guess he can't monitor individual cells either - Probably only the 23 groups of 4 cells in parallel Don

05-09-2017, 05:26 PM	#7
felix_fetche Member Join Date: Mar 2010 Location: Baia Mare, Romania. Posts: 166	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!

05-10-2017, 12:50 PM	#8
felix_fetche Member Join Date: Mar 2010 Location: Baia Mare, Romania. Posts: 166	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!

05-12-2017, 01:16 PM	#10
Pescador12 Member Join Date: Dec 2016 Location: USA Posts: 168	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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