off grid in germany

[binkino]

For the settings for the 10kWh battery I have the attached datasheet

I can go up to 100 Amps in dis/charging (so also later I can change to a more powerfull inverter with no problems)
and the charging volts are 52,50 to 54,75 volts.

I will start at 52,5 volts and limit each classic to 40 amps.
Start with end amps at 10, and try out what's the best value.
Then observe it's behaviour and do small changes.

This battery doesnät have "dry contacts" ... why ever ... possible it is just unpolupalted and inside the battery on the BMS PCB.
But hope I donät need them

We also thought about, to add s routine to the ESP program, that gives a signal out, can be connected to a relais, that is connected to the classic, to stop charging ...

Just thoughts.

[ClassicCrazy]

Some thoughts on the battery you are getting.
I notice they only use 15 cells instead of 16 like many other packs on market.
So  your settings will be a bit different that what others have been using or talking about on some forums ( you will be able to subtract one cell voltage to compare though ).
Not so sure that software you linked may work with the bms you are getting - guess you will find out.
That may be a Seplos type bms , if it is then the esp project that the other german guy linked earlier in discussion may work with the esp8266 - though you would need a rs485 converter board if you went to rs-485 port. But that esp software may work via the rs-232 port too - not sure on that.
He had a nice webpage interface on his compared to the one that you just linked.
Larry

[binkino]

Yes thanks, that's correct, there are only 15 in series. A bit disappointing, as 16S would have a bit more energy and small more voltage range.
My inverter switches back to grid at 47 volts...
But it is like it is now, better then nothing. Makes no sense to wait and search any longer

Yes so the voltage for charging is lower, 52,50 to 54,75 volts.

Thanks


The ESP is designed to get the datas via the serial port, so the MAX3232 is there to "translate" the datas (voltages...) ... I am interested how it will work

[binkino]

so far, so good.

Today I picked up the battery.

Brought it in the basement (cellar?) and first try to activate it was a fail endet in a lit error led.
mh... after some tries, I removed the screw fuses from the 48v line of each Classic.
Then the inverter also started. Great.
So this battery does no "pre charge" and goes in protect mode, if the ballast on torning on is too high?
Anyhow. The caps were then enough charged so I had no more problems.
But good to know and I have to remember this for in the future.

The seller also told me, inside it is the same like the Pylontech.
Ok, what we assumed.

Today also the D1 MINI arrived, but not the MAX3232.
So I only can test trying to install the software on it today and find a western RJ plug with cable (phone line) sure have a lot in a box ... from the old times haha


Looks clean now, much better.
Tomorrow I will have to get up early again and watch it while charging so if something goes wrong I can quick react


Some pictures in attachment

[ClassicCrazy]

Glad you got your battery and installed already !
You can probably try a windows software ( unless you run apple stuff )  from seplos in the rs232 port - just use a usb to rs232 adapter if you have one and then make the connections from that to the phone plug as it showed in your other wiring diagram .
Worth a try .
Larry

[binkino]

yes thank you


but ... dumb me ... I didn't realize, that I only have RS485/CAN there (dough where is the facepalm smiley...)

There is a short video in the post:
https://www.youtube.com/post/UgkxoF_q-Jn4-o3sNTcU8nIUuEJmOb9R4kW_

I also had to wire the relay in the power line to the inverter, as this dumb thing only switches to battery, if the battery voltage has reached 56,8 volts. (I forgot this...) so quickly rewired it again.
I thought, I don't need this anymore. Yes, was teached better when I found out (again) haha



Last night I also found this (german) forum page:
https://www.photovoltaikforum.com/thread/130061-pylontech-us2000b-daten-protokolle-programme/?postID=1748895#post1748895

and this:
http://www.multisibcontrol.net/
"MultiSIBControl is a software tool for monitoring and control of PIP/Axpert inverters and Pylon tech batteries."


Now I have to look for a Can solution.

The MAX3232 haven't arrived yet, I could cancel the order, but ... who knows, one day they come in handy.

[ClassicCrazy]

Here is esp to 485 hookup video I made.
It is for PZEM-017 energy monitor but should be the same setup for your rs485 port. This I used adapter board as shown in video.
You could also use usb to rs485 converter directly to your computer - those are only a few bucks.
I have a canbus board ordered but haven't gotten it yet so never tried that port.
https://youtu.be/TbLLrlZ3deI

Larry

[binkino]

Hey thanks

Still watching your videos

(I am "A68k" in YT)


This shown converter could make the ESPs I have not useless, so ordered some of them now

Then I have the USB one and these boards and I can try different ways.

This MQTT could be a good way to send the datas to the PI (collects datas from the Classics, and also privides me the LCARS style screen)

That is all new for me



First google search result is https://pimylifeup.com/raspberry-pi-mosquitto-mqtt-server/
ok that is easy to do

[ClassicCrazy]

In the opensource section of the forums here we have it all documented how to use Grahams software to get Classic data onto a pi as mqtt.
https://github.com/ClassicDIY/ClassicMQTT
That way you can get the data from Classic with more than one device at the same time and not have the one ip connection at a time restriction. I run mosquitto , telegraf, influxdb, and grafana . Once you have all that set up it is easy to use the same process to send esp mqtt data to the same pi and structure and then also graph on grafana. So I have been adding Tasmota esp devices with temperature or Sonoff devices reflashed with Tasmota .  That other german fellow had an esp app that would connect to a seplos bms and it also would send it all to mqtt.

Larry

[binkino]

I am sorry, I apologize, that was misleading ...
Not Graham (he made this great ANdroid app, I also use and send the data to PVoutput)

Wade ... thanks to him, I have this great solution on my PI.



I ordered this adaptor: https://amzn.to/3vthVUF
"DSD TECH SH-U10L USB an RS485 Kabel für Windows 10 8 7 Mac OS Linux 5FT"

Converts RS485 to USB (as a serial device)

I searched thru the web and found this software:
https://www.lithiumbatterypcb.com/smart-bms-software-download/
https://signaturesolar.com/eg4-lifepower4-lithium-battery-48v-100ah/
but shops me nothing.

Then this project on Github:
https://gitlab.com/bms-tools/bms-tools
expects a 64bit computer (why??? Why does someone do this?)
My laptops all only have a 32bit Windos. Do I really have to setup a new machine with 64 bit ...
Still not sure, this will be able to read the datas.

Someone has the Pylontech software ? ;-)


Ideal soluten for me would be, I can connect the RS485-USB to my PI,
there a script runs and stores the data, wich I can read and implement in my page or so a new page to view the datas.

But this can also be a solution with the ESP and the RS485-TTL adaptors, they arrived today, too.


now have to go to work... ;-)

[binkino]

Larry,

seplos software ...


I found this:
https://s3.us-west-2.amazonaws.com/linquip.equipment/275516/equipment_275516_catalog_43f4cdcba17a9ea4ddefcfbe317bfef73e974b90.pdf
https://drive.google.com/drive/folders/10pxgNLHovcDZRVGrCZsSkfecBrRw-AdW

I have downloaded the files, will try them later.




What sketch do you have installed on your ESP?


Thanks

[binkino]

Larry,

seplos software ...

I found this:
https://s3.us-west-2.amazonaws.com/linquip.equipment/275516/equipment_275516_catalog_43f4cdcba17a9ea4ddefcfbe317bfef73e974b90.pdf
https://drive.google.com/drive/folders/10pxgNLHovcDZRVGrCZsSkfecBrRw-AdW

I have downloaded the files, will try them later.


(I could reanimate my Lattepanda ... for this software or take an old netbook. Wasn't there a way to show a programs window via network in a website...)



What sketch do you have installed on your ESP?


Thanks

[binkino]

Great Scott!

That works!


My Laptop still running.
Still thinking about wich netbook I will install a W7 and nail it there for the next time...

In attachment a screenshot via VNC connection.

Thank you so much for this tip!!!


As this is working, I know the cable is good, it uses the Pylon protocol, so it will (should) also work with other solutions.
Or can the program ... it can write "RealTime Record" - if the PI reads that file via network share ... mh ... must sleep over this idea.

[binkino]

This program is very cpu hungry.
But i have installed one of my netbooks now with w10, as there were problems wirth framework installation on w7 ...
the w10 really eats the cpu power.
But the battery program is running on it and this needs less energy.

It can write a file while logging (example attachment)

But as this is too much cpu hungry, I will wait for a solution vie the ESP or direct to my PI

[boB]

Interesting XLS view of the cells !

boB