Your comments
Hi Eric,
Nissan batteries are a bit old and not the biggest capacity but technically they are fine. For more capacity one of the best solutions today are the ID.3 cells but they come with a price.
There is no firmware for the ESD charger that supports Li-ion as far as I know, only the EVPS Runke V2 (gold) and TC chargers are compatible.
The BMS question is tricky since - apart from the standard battery management tasks - it must talk to the other units on the CAN bus as well therefore only a very few custom solutions exist. To my knowledge there are 3 teams in Europe who are capable to address this, located in Spain, Italy and Hungary.
/ Azzuro
Cool, so the question of firmware is off the list. I've looked once more at your video showing the power lines driving the motor and started to wonder why the shape of the A,B and C signals became quite different while the motor was revving up. Honestly I would expect them to be pretty much identical regarless of the rpm or load. Let me check these on my spare scooter and come back to you with the findings.
Similar remark for the calibration process, I've done the last one long time ago but I can't recall it just quitting during the process. I'd rather assume there was a message confirming the success at the end of the process. Let me check this as well (btw I haven't seen a link to your video showing this one).
Please allow me a few days to collect the forementioned results.
/ Azzuro
Salut,
Thank you, I've looked at them at first glance they look good (earlier I've assumed the Hall signals are not in use, but wasn't completely sure).
In fact in the background of the video I hear the wheel spinning, so what is the problem exactly ? Is it the power not being sufficient to drive the scooter on the road under real life conditions ?
Has been the firmware issue addressed yet ?
/ Azzuro
Bonjour Lionel,
Apparently the access to the documents you wished to share is restricted, if you could grant permission please. Regarding the firmware, I haven't seen a note if it was replaced yet however if you still have the Framuga version that needs to be changed according to me as stated earlier.
Bien à vous, Azzuro
Hi,
Usually the ICMs are very reliable, personally I never had any problems with them. The 5V voltage regulator chip (U5) is Sharp 05DZ11.
/ Azzuro
Bonjour Lionel,
Great, thank you. We could use emails indeed for exchanging files which may not be of interest of the wider community indeed.
Meanwhile I've checked the encoder and I see conflicting statements if Hall sensors are in use or the angular detection only relies on the optical sensor. Some claim it is not in use and I don't see Hall elements on the pictures of the board either (I am not in the position here in Antibes to check it myself). On the other hand I see references to the Hall functionality in the pre-production versions of the MC firmware.
Salut Lionel,
I haven't had any problems with the encoder yet therefore I have little experience with it, however I will check the background this week to figure out how it works. In general I would expect signals on all 5 input ports (Hall A/B/C and ENC A/B).
Regarding the IGBT block, I don't have a layout diagram but it is fairly easy to find the respective optocouplers, they are next to the IGBT control pins on the PCB. On the other hand I have the circuit diagrams for the MC, please drop me an (email : vectrixshare@gmail.com) regarding those.
No worries for the patience, we are here to help each other :)
Bonjour Sylvain,
Yes I have the complete file, please send an email to the following address : vectrixshare@gmail.com
No probs at all - please find the page showing the relevant part of the MC. It is a fairly simple design with 3-3 opto gates driving the positive and negative sides of the IGBT for the 3 phases (U,V,W). B+ stands for the positive voltage of the battery.
As shown in theory the IGBT fault should be detected (and the respective error displayed in the application and on the dashboard) but as far as I know this does not happen in all the cases. It is basically a logical OR function realized with the 4 gates shown.
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Salut, pas de soucis - meanwhile I have checked the details in question;
Regarding the calibration I've initiated the command in VectrixDiag and indeed there is no status message at the end of process. The orignal value on my scooter has been 65 (by reading manually with the application). During the calibration process which took only a few seconds the counter started from 1 and quickly reached the value of 62 while the wrench light on the bike has been also illumunated then went dark after a few seconds once the process has finished. I've repeated the calibration 2-3 more times and the results have been identical. If yours was similar (apart from the value) then this aspect should be fine I'd say.
Unfortunately concerning the power signals I could not retrieve consistent results yet since I only see a 15 kHz high voltage signal which obviously slightly changes with RPM as expected. This also explains why you've decided to use a low pass filter (which I don't have one at hand). Accordingly this part is still "work in progress".
/ Azzuro