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Author Topic: 2way battery system  (Read 6334 times)

Offline fritz

  • Sr. Member
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  • Posts: 424
2way battery system
« on: July 27, 2010, 07:29:50 PM »
One major problem of battery systems with electric vehicles is the efficiency on stop go - discharge-charge(regeneration) cycles.
The battery system is designed for less leakage and high capacity.
Even if its possible to have high discharge currents - the overall efficiency on electric breaking with regeneration and recharging the battery is poor and /or wears out the batteries.

This is why I think that a concept with a 2-way battery system might be interesting.
The storage system is optimized for no leakage and high capacity - but less peak current -
which is connected to a second system optimized for peak currents, with less storage and high leakage but almost no wear-out.
Stop and Go would be operated by the peak current system - if you are on speed - the energy would come from the storage system.
If you start the car - the peak-current system gets charged by the storage system - and here we go.

For stop-go you need a storage capacity of maybe 50-200Wh - not that much. It should be possible to make an optimized electrochemical or whatever system that fits this needs.

What do you think ?