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Hybrid to EV

Posted: Mon Mar 08, 2021 9:47 pm
by BaronVonBurgman
Hi everyone, new to the world of EV and looking for information please.
Recently bought a Toyota Estima hybrid AHR20 and it set me to wondering. Having seen the results with a Lexus transmission, how feasible is it to convert this car to a full EV?
I'm learning all the time but haven't really got my head round it properly. Can I use the existing inverter? It would be ever so convenient, especially as the car has a motor on the rear axle as well. What about the existing cooling system? There's 2 on the car, one for the engine, the other for the electrics.

If I'm going to do this, I will source another car to convert. Not going into the specifics right now, just wondering what's possible.

Thanks in advance...

Re: Hybrid to EV

Posted: Tue Mar 09, 2021 12:00 pm
by arber333
BaronVonBurgman wrote: Mon Mar 08, 2021 9:47 pm Hi everyone, new to the world of EV and looking for information please.
Recently bought a Toyota Estima hybrid AHR20 and it set me to wondering. Having seen the results with a Lexus transmission, how feasible is it to convert this car to a full EV?
I'm learning all the time but haven't really got my head round it properly. Can I use the existing inverter? It would be ever so convenient, especially as the car has a motor on the rear axle as well. What about the existing cooling system? There's 2 on the car, one for the engine, the other for the electrics.

If I'm going to do this, I will source another car to convert. Not going into the specifics right now, just wondering what's possible.

Thanks in advance...
There is allready a debate about this here. Might give you some insights...
viewtopic.php?f=9&t=398

There is some philosophy on how to add more battery here.
viewtopic.php?f=4&t=301

On my EV one cooling system seems to be enough to cool down inverter, DCDC, motor and charger in that order. I do have a temp sensor behind motor outlet which should warn me if temp would go above 60deg. As of yet it never had.
Webasto diesel heater i use needs to be on different loop because its nominal temp is more like 80degC.