Got really sad then my favourite calculator which I was opening more than once a day got closed so I spent today’s evening trying to my own small implementation which I will try to add lots of features.
Todo List:
Shareable URL which would save your inputs
Recommended VESC current ratings based on inputs
Add many style graphs for e.g. (motor/bat current duty cycle relationship), (battery voltage/speed relationship)
If someone has some more ideas hit them up I will try to implement them all
I always counted Wh with max voltage as it’s still usable watt hours
I will implement this later on, this was quick iteration I wanted to keep simple. I don’t know many other 18650 cells which allow more than for e.g. 2C charging current and lipos are all C rated
What does the currents section mean? My 10S4P 20A 2500mah cells are saying 350A constant discharge? I think that should be 80? Something to look at there?
Same with the power, the numbers seem off by a power of ten, but if corrected still slightly lower than I’d expect.
Wow well done already
I have it that the numbers of the results are cut in half because the borders are very little (if you understand what i say) I see that you don’t have that so how can I fix it? or is it a bug
Seems wrong to me - Wh is the total energy in your pack. You don’t use the pack at 42V all the time. The reason to use the nominal voltage is that it gives a good estimate for the average voltage the pack will be at. Some time will be at higher than nominal while around the same time will be spent below the nominal voltage.
See this for a quick and dirty illustration of what I mean.
Edit2: Even more obvious: an actual Wh graph from lygyte
I don’t think the lipo selection is working, I can’t seem to get data to work while using a lipo set up. I did just change to 18650 and put in the correct values and it’s great. Love how it displays torque output, that would be fun for comparing. IDK how you are making 72Nm mine says 7Nm lol
I think the range estimation is wrong by a factor of 2, maybe something do with the number of motors, a 370Wh battery is only giving me 19km of range using 10 Wh/km
I would like to have maximum grade and what speed it can climb that maximum grade based on the maximum duty cycle that respects the battery maximum current proportional to motor max current
If you want I have the formulas ready in my own spreadsheet