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Richie`s Modular Powerwall (Germany) 21kWh+
#21
(11-27-2019, 04:44 PM)richie241 Wrote: I pur this guys under my pack holders to give it extra safty.



Hope that i can finish the packs in the next days.
Next step is to order my Batrium.
Do you have a STL link to beef up the bottom pack holder? Your progress is coming alone nicely!
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#22
Nice and clean job!

How does the negative side of your packs look like?
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#23
(12-02-2019, 02:08 PM)owitte Wrote: Hi Richie,

very nice and clean setup, keep up the good work Smile . Would be very interesting to learn from your long-term experience with new cells.

Btw, your solar setup somehowlooks familiar to me Big Grin 
 

Have sun Cool und Grüße aus Braunschweig

Vielen Dank :-)
I have still 3 Packs to go, hope that i can start the system in the next 6 weeks.
Nice, what's your experience with the modules on the facade?  


Quote:Do you have a STL link to beef up the bottom pack holder? Your progress is coming alone nicely!

of course, you find it here:
https://www.thingiverse.com/thing:3517096
i scaled it a little bit for the pack holders and use 50% infill. Unbreakible i think  Tongue



Quote:Nice and clean job!

How does the negative side of your packs look like?


Thanks! The negativ side looks like the possitive side, both fused with 3A axial glass fuses (from AliExpress).
I do more pictures / video when i finished all packs the next days.


A Question about Batrium:
can i cut and extend the last pack's longmon cable to route it back to the CMU? I need more than the 25cm..
2013: 40x PhonoSolar 250Wp @SMA Tripower 10000 || 2016: LG Chem RESU 12kW @SMA SunnyIsland 4.4 || 2019/20: DIY POWER :-)
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#24
Last Update for 2019 :-)

All packs are finished, my Batrium received.
I have to hook up the LongMon Cabels and the main Battery connecting cables.



I used such spacers to Mount the LongMons on the Packs.



Is this ok with respect to the Cell Temp Monitoring of the LongMons?
2013: 40x PhonoSolar 250Wp @SMA Tripower 10000 || 2016: LG Chem RESU 12kW @SMA SunnyIsland 4.4 || 2019/20: DIY POWER :-)
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#25
I use higher since i want a Good Bond. To low bad they dont Bond enough

I would not attach it to the cells. The longmon Will be very very hot when balancing. using a distance is goos

Yes you can extend. Use Twisted psir cable like from ethernet.

I have extended several meter s
richie241 likes this post
The Ultimate DIY Solar and build place
YouTube / Forum system setup / My webpage  Diy Tech & Repairs

Current: 10kW Mpp Hybrid | 4kW PIP4048 | 2x PCM60x | 83kWh LiFePo4 | 10kWh 14s 18650 |  66*260W Poly
Upcoming: 14S 18650~30kWh | Automatic trip breakers, and alot more
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#26
Sooo.. Batrium is hooked up since last weekend and everything works well.
At the beginning i had some trouble with the SolaX integration - the both SolaX CAN Bus Protocols seems to be
for the G1 devices / or they are buggy.
I tryed the 'Leechi Project' Protocol an now everything looks right :-)
My inverter tells me 'LG BMS connected' - right!  Big Grin

For the moment i use 30A charge / discharge current (max. 500mA/cell in my 14S60P Setup)

I use the range 3.10V - 4.00V right now, that gives me round about 150A
For Bypass voltage i set 4.05V and cut off voltage to 4.20V - this should work out, right?
I still have to tweak the SoC for my range, has someone a idea?

Next steps are adding more Fans in the cabinet (Summer is comming..) and to add
the next 840 cells in parallel. Than will to to max. Inverter current of 50A.

I printed a little cover for the ABB Shunt to prevent touching the terminals,
maybe you can also use it: https://www.thingiverse.com/thing:4091376



rottenkiwi and tango like this post
2013: 40x PhonoSolar 250Wp @SMA Tripower 10000 || 2016: LG Chem RESU 12kW @SMA SunnyIsland 4.4 || 2019/20: DIY POWER :-)
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#27
Hi richi,

i read that the best cycle life would be 3.2 V -3.9 Volt. With that you loose some useable power but make the cycle life again alot greater.
Still wanted to write you since you are also in Germany and just 70 minutes away.

Maybe we can meet at some point when i am coming closer to get building my packs.

So far everything looks very very good and like a pretty good installation.

Greeting
Nils
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#28
(01-10-2020, 03:17 PM)caosmen Wrote: Hi richi,

i read that the best cycle life would be 3.2 V -3.9 Volt. With that you loose some useable power but make the cycle life again alot greater.
Still wanted to write you since you are also in Germany and just 70 minutes away.

Maybe we can meet at some point when i am coming closer to get building my packs.

So far everything looks very very good and like a pretty good installation.

Greeting
Nils

Hi Nils,

yes, this was the original plan - i think i chance back to it. Doing some more tests.
BTW: i did come discharging tests for the LG INR18650-M36 with a SKYRC MC3000, see charts.
The min. top level is 4.00V, so i have to test 3.90 - 3.20 in my Powerwall with the live system.
All charge/discharge with 500mA, 50mA end current.

Ah, nice - i sent you a pn :-)

4.00V - 3.20V


4.05V - 3.10V


4.00V - 3.00V


4.00 - 3.10V
2013: 40x PhonoSolar 250Wp @SMA Tripower 10000 || 2016: LG Chem RESU 12kW @SMA SunnyIsland 4.4 || 2019/20: DIY POWER :-)
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#29
(01-10-2020, 11:46 AM)richie241 Wrote: ...
I tryed the 'Leechi Project' Protocol an now everything looks right :-)
My inverter tells me 'LG BMS connected' - right!  Big Grin
...
Hi Richie, some Questions:
  • What was the reason you did not take the Solax Hybrid X3?
  • What battery voltage do you have on the inverter?
  • What is meant by "Leechi Project Protocol? Would this also work on the X3?
  • What is your general impression of the SolaX inverters? The service does not seem to be very good, the manuals are lousily translated, but the datasheet looks very interesting.
  • Do you have, or are you planning to have, an uninterruptible power supply?
  • What are your experiences with the BMS of Batrium?
    How many BatMons do you work with?
    Where did you buy this?
Sorry for this many questions. Your project gives me new impulse for my project. I wait for the Megacellcharger from Alex so that I cam start selecting my zells.
The day of 100% renewable energy will come. It won't be long now.
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#30
Batrium is from batrium.com
The Ultimate DIY Solar and build place
YouTube / Forum system setup / My webpage  Diy Tech & Repairs

Current: 10kW Mpp Hybrid | 4kW PIP4048 | 2x PCM60x | 83kWh LiFePo4 | 10kWh 14s 18650 |  66*260W Poly
Upcoming: 14S 18650~30kWh | Automatic trip breakers, and alot more
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