Audi EV

[dpeilow]

Cool. Wonder if it charges with 3 phase?

[JimmWilks]

Depending on how much of the pack they actually use it could get over 100 miles at 250 wh/mi. They may simply be more realistic with their range figure than most. Unless you do an EV from scratch it's going to be hard to fit much more than 100 miles worth of batteries in your average vehicle.

Well for a 100 mile range at 250 Wh/Mile consumption, and an energy density of 250 Wh/L, you'd only need 100L of battery space, I suppose you need to maybe scale that up some for casings and cooling space but generously maybe to 130L? That's about a tenth of a cubic metre plus a little bit as a rough guess. Surely that doesn't use all of the space freed up by removing the engine, gearbox, driveshaft and exhaust tunnel?

Edit: Just seen the diagram from TEG. Looks like it does use all the space! Very narrow underfloor module though.

[TEG]

Audi A3 e-tron Plug-in electric wagon concept unveiled
Pure EV this time.

[JimmWilks]

A lot of these conversions seem to use the T-shaped battery, even the Leaf. Highlights how efficiently packaged the Model S battery is.

[TEG]

The Leaf battery isn't really "T-shaped":

It is shaped to fit humps under the seats.

[JimmWilks]

The Leaf battery isn't really "T-shaped"

Ah ok so it isn't, I didn't check before posting, and was relying on my apparently faulty memory! Actually looks like quite efficient packaging also.

Judging by this picture, it looks efficiently packaged but TINY compared with the Model S battery size. I suppose with the range difference that is to be expected. Still, if I were building an EV, I would be tempted to fill all available space with battery.

[TEG]

Judging by this picture, it looks efficiently packaged but TINY compared with the Model S battery size. I suppose with the range difference that is to be expected. Still, if I were building an EV, I would be tempted to fill all available space with battery.

I think Nissan put less battery than they could because they were targeting a low price of entry with range on the low side.
If you need a bit more range, and want to spend more you could look at a CODA.

[JRP3]

Still, if I were building an EV, I would be tempted to fill all available space with battery.

It's tempting, until you have to pay for it. I could have put 100 miles worth of battery in my conversion but I didn't want to double my battery cost for range I didn't really need. Nissan probably came to the same conclusion.

[Jaff]

Still, it makes me wonder why Nissan didn't offer more battery as an option though...I'd bet some Leaf buyers would have elected to purchase a higher range battery.

It's tempting, until you have to pay for it. I could have put 100 miles worth of battery in my conversion but I didn't want to double my battery cost for range I didn't really need. Nissan probably came to the same conclusion.

[JRP3]

They are having enough trouble just making enough of one model. You can't just drop some extra cells in place and call it a day, you either have to add cells in parallel to each existing module to keep voltage the same or you add modules in series, which increases voltage, which might be more than the controller, DC/DC, and charger are made to handle. Plus the suspension might have to be different to handle the extra weight, and it might even call for more crash testing because of that.