[jqpabc123]

That said, a lot of EV have transmission and more fluids due to the need to improve temperature control.

Most EV's don't even have a transmission. And any battery cooling fluids are often sealed up inside the battery pack.

Some EVs have air cooled battery packs, Nissan Leaf for example.

If anything, you must be thinking about hybrids.

[agumonkey]

No, Porsche added gears for better efficiency. Other manufactures talked about similar ideas since.

Battery cooling I'm not sure though, it's still circulating right ? which would mean a pump of some sort.

Anyway things are not as vanilla as they used to be in the early days, I hope that trend doesn't keep up.

[jqpabc123]

No, Porsche added gears for better efficiency.

Only applicable at autobahn speeds --- which explains why Porsche is the only manufacturer thus far to see a need for this.

I seriously doubt this will become typical --- simply due to cost reasons.

Battery cooling I'm not sure though, it's still circulating right

No, natural thermal convention in most cases.

[agumonkey]

Oh ok the liquid is passively cooled ? what the "heatsink" here ? the lower surface of the pack ?

[jqpabc123]

the lower surface of the pack ?

Yes. In some cases, the battery pack also serves as a structural component.

https://electrek.co/2021/01/19/tesla-structural-battery-pack...

[agumonkey]

Yeah, I guess we all saw the structural battery annoucement.