My current tasks: a cheating device for the original BMS and an homemade BMS

Ich arbeite mit Busbars. An der Stelle an der bei mir der Stromsensor sitzt hat diese 2,5x20mm -> 50mm².
Also lege ich parallel eine Busbar mit 2x20mm.

Back to the topic, with an update.

Cheating device:
Second test completed.
I switched off the cheating device, to compare results: I drove 73 kms, all in town (more or less 10km a day), then I had the canister effect when arrived at SOC 0%.
I suppose the parking for many hours between each trip delayed a little the arrival of the canister effect.
Next weekend I'll start the third test: I'll install a <50% SOH BMS (kindly sent me by a friend), switch On the device again with the correct conversion factor set according to the SOH stored in the "new" BMS.
Let's see if the canister effect will be avoided like in the first test.

Another update.

Cheating device:
It took me some time to complete the tests, because I had to remove the battery for installing a 39% SOC BMS and after I repeated the test two times.
Now I have:
SOC 3,7%
83,3 km. driven
48,4V battery pack
3km left on the ODO.
I'm pretty sure that I can arrive to 90 km, but driving my Twizy in this low SOC condition isn't so funny and I don't want to overstress my new battery.
Considering the bad condition of the BMS (in terms of SOC), the external temperature around 0/3°, and my driving style in town not so "light" (frequently restart from quiet position at full throttle), I judge the results successful.
SOC decreased not very lineary, faster with high SOC and slower with low SOC, with some SOC jumps (down) after parking. But this test is an extreme situation, so jumps can be justified.
Tomorrow I'll restart the test, without Cheating hw, for a counterproof.
If someone is interested in testing the device, I can make a few units available at special conditions.

Homemade BMS:
Since are announced or will be available in a short time alternative BMS with professional manufacturing (they look so to my eyes...), I came to the decision to share my project, so also the hobbyists like me with a basic soldering iron skill will have the oppurtunity to build it.
For this reason I redesigned the pcb layout, for using preassembled modules (easily available at very low prices) and original BMS connectors (for those who prefer them).
But before, I want to complete the project and I have to find enough free time to organize the material.
Now I'm trying to improve the SOC calculation of the original Klautz code (the voltage based SOC), using a sigmoid function which I hope will accurately follow the discharge curve of the cells.
And in the meantime I'm working on the BT app, for BMS monitor/setting.
Despite my "brute force" experiments, my prototype BMS is still aliving in perfect conditions!
This is just a preview of the BT app.

Cheating device:

Delvecchio schrieb: Tomorrow I'll restart the test, without Cheating hw, for a counterproof.

Counterproof test completed.
Now I have:
SOC 3,5%
46,1 km. driven
51,3V battery pack
2km left on the ODO.

SOC decreased very fast.
At my second-last restart, after parking the Twizy with SOC 13%, it jumped to 28%, but only after a few kms (3 or 4) it was again down to 13%.
RKE is already clearly visible. There is no reason to arrive to 0%.