Circuit to Automaticaly Swap Batteries on the SSG?

[tjnlsn255]

Voltage regulator?

Would it not work to use a voltage regulator to turn a charging battery on and off based on it's charge voltage like in a car battery/alternator system?

My old Ford pick up has an external voltage regulator why not something like that?

I was thinking that in a PMM with no rotor field windings to turn on and off that maybe the VR could turn on and off a relay that ties the ground connection to the Bridge circuit.... just a thought.....

Have a most excellent day....

Todd

[muttdogg]

Switch batteries

Hey Sephiroth,
If I remember correctly, it isn't the switching of the batteries that is the problem. It is the stopping of the voltage before batteries are switched out. So, the motor needs to be stopped, or the voltage needs to be dumped to a dummy load before the switch happens. So, a manual 3-way switch would be my first try.
Dan

[vzon17]

Battery swap circuit ideas

Well some ideas tha crossed my mind on this is to use a 4ple DT relay like someone mentioned. but make it a latching relay. then you just need a short pulse to flip it from one side to the other and the rest of the time it does not use any power. then you can use a zener diode of the right voltage to dump a cap to turn on the relay coil momentarily when the voltage in the batteries goes low or high.
just some ideas for simplicity.