Joey
100 W
I have a 24-72V 35A analog clyte controller and CA from ebikes.ca, and EV Tech BMC hub motor with shortened wiring. I have a 36V LiFEPO4 pack on order but until it arrives, I want to use a 36V Li-Mn battery pack with internal BMS from an eZee hub kit to power the clyte controller and BMC motor.
I programmed the CA basic settings to limit current to 15A max and left the default cutoff at 19 volts. When I apply throttle very slowly, the bike accelerates smoothly to 21 mph on the flat, and climbs hills with no problem. However, when I twist the throttle a bit more quickly, the Li-Mn pack BMS trips and instantly shuts down the battery. The CA reports a battery voltage of approximately 38 volts just before the shutdown occurs, so I think the problem is not voltage sag, but rather a current spike that peaks quicker than the CA can limit it. Are there some changes I can make to the CA advanced settings to prevent the battery BMS shutdown? What advanced settings need to be tweaked and what range of values should I try?
-- Joey
I programmed the CA basic settings to limit current to 15A max and left the default cutoff at 19 volts. When I apply throttle very slowly, the bike accelerates smoothly to 21 mph on the flat, and climbs hills with no problem. However, when I twist the throttle a bit more quickly, the Li-Mn pack BMS trips and instantly shuts down the battery. The CA reports a battery voltage of approximately 38 volts just before the shutdown occurs, so I think the problem is not voltage sag, but rather a current spike that peaks quicker than the CA can limit it. Are there some changes I can make to the CA advanced settings to prevent the battery BMS shutdown? What advanced settings need to be tweaked and what range of values should I try?
-- Joey
