bike4life
10 W
- Joined
- Apr 10, 2020
- Messages
- 82
I have a 12s a123 cell / lifepo4 battery pack. they suggest 3.6 volts per cell charging. here is the data sheet:
https://www.batteryspace.com/prod-specs/6610.pdf
I am feeding it 42.2 volts from the switching supply to the battery and however when i plug the switch mode supply in to the battery with the positive on the positive and the negative on the bms pack -, it immediately trips and stops generating power.
when i unplug the switching supply from the battery it turns on again and starts generating power.
The ebike battery is 37 volts - empty. Why is the switching supply crapping out when charging?
thanks. my reasoning is I think i remember a long time ago, i needed to add a boost converter to the output of the switching supply to act as an isolation transformer. I believe when charging a battery at 37v, then the voltage drop at the switching suppply will be the same as the battery so it will drop from 42 volts to 37v, tricking the switching supply into tripping out as the voltage is too low, but the boost converter will act as an isolation i think. Is my reasoning false or true.
https://www.batteryspace.com/prod-specs/6610.pdf
I am feeding it 42.2 volts from the switching supply to the battery and however when i plug the switch mode supply in to the battery with the positive on the positive and the negative on the bms pack -, it immediately trips and stops generating power.
when i unplug the switching supply from the battery it turns on again and starts generating power.
The ebike battery is 37 volts - empty. Why is the switching supply crapping out when charging?
thanks. my reasoning is I think i remember a long time ago, i needed to add a boost converter to the output of the switching supply to act as an isolation transformer. I believe when charging a battery at 37v, then the voltage drop at the switching suppply will be the same as the battery so it will drop from 42 volts to 37v, tricking the switching supply into tripping out as the voltage is too low, but the boost converter will act as an isolation i think. Is my reasoning false or true.