Thanks, lots of preparation and ordering parts thus far but now that most of the parts have arrived I be starting the real work. Time to build!Very nice project
Thanks, lots of preparation and ordering parts thus far but now that most of the parts have arrived I be starting the real work. Time to build!Very nice project
Is there any latest news?For those who would like to see the test results I received from the manufacturer I have attached them to the post. From my perspective the results look reasonable but I don't have much experience purchasing NMC cells. Variation in capacity of 1.3Ah/1.8% and IR of 0.02mOhm/4.3%. Keen to hear from the group if these match people's expectations for A grade cells.
Deligreen (TC Elcon) 2kW charger has also arrived. Has an additional 12V supply and output contacts but I haven't figured out the exact use for them yet. I may use the 12V supply and contacts as part of the fail safe circuit for if the CANBUS locks up and the BMS needs to disconnect the charger. Max charger voltage is set to 117.6v.
View attachment 350047
I'll post up some news on the bms and battery once I start bench testing, hopefully this weekendIs there any latest news?
If it is installed on the front, the current will pass through the screw column to the shunt path. If it is installed on the shunt, the current will flow directly through the shunt. There is nothing wrong with either, but it seems that installing it directly on the shunt is also good.I'll post up some news on the bms and battery once I start bench testing, hopefully this weekend
I did have a question about the mounting of the LV bms with regard to the 500A rating. I note that the MAXKGO version terminates the cable lugs on the top of the PCB rather than directly on the contactor and shunt as per the ENNOID design. This requires the current to flow through the PCB.
I noticed there were no through hole vias but I wasn't sure if the PCB pads/terminals were sold copper inserts. Could you confirm if it would be preferable to mount the cable lugs to the underside of the shunt to reduce PCB heating?
Engineering gifs are what's up.Design is at 90%View attachment 353794