Quote:
Originally Posted by Isaac Zachary
Doesn't Mazda put 48V super capacitors in it's cars nowadays that charge up quickly from the alternator when you slow down (which it converts from 48V down to 12V)? It seems like a system like that would work great for a start-stop system in a non-hybrid, plus the fact that the alternator doesn't start charging while you're driving until it has too.
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I've not aware of any company using super capacitors in a production car. 48V systems have a motor/generator that replaces the alternator. That charges a 48V Li-Ion battery when the vehicle is slowing through regenerative braking and pulls power from the battery under acceleration. The motor can also be used as a regular generator on long flat sections without regen.
The 12V battery is charged from the 48V battery with a DC/DC converter.
