I’m not really sure what a DC/DC converter is good for, but all the electric vehicle website I’ve been looking at have them on there parts list. So I’m curious, what exactly is it used for and is it applicable for my situation?
Asked by:Fred Brown
I’m building a 48V electric bike with four 12V batteries. Do I need to buy a DC/DC converter?
4x 12V batteries in SERIES will give you 48V
DC/DC converters are analogous to Power Transformers in AC circuits.
no, you put the 4 batteries in series to get 48 volts, and connect that to the 48 volt motor. But you need a speed controller of some sort between the battery and the motor, else it will run at full speed all the time.
If you have a 24 volt motor, wire the batteries in series parallel to get 24 volts. Or just use 2 batteries.
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How will you control the speed of the bike? The DC/DC converter can be designed to adjust the voltage to the motor to control its speed but it would not waste much battery power.