Bold claims on Density/Range
Bold claims on Density/Range
Chinese giant joins list of automakers exploring solid-state options
Bold claims, but that energy density would be amazing.
What’s more, the company theorizes that it is able to eke some 1,864 miles of range from its battery technology, as well as complete the industry standard 10-80% charge in less than five minutes.
Bullshit claim. A car has a range, a battery has capacity.
It's a matter of capacity per unit of weight and level of safety that makes the range feasible within the limits of the weight of a normal car.
So it's not bullshit, and other battery manufacturers use similar standards in PR releases.
The correct number would be kWh/kg, but I think most people don't recognize the meaning of such a number as easily."This battery can go 3x as far as current ones" is perfectly understood by anyone.
solid-state battery architecture with energy densities between 400 and 500 Wh/kg, which is two or three times that of the current EV battery landscape.
So 3x is the upper limit, comparing probably to the worst of current cells, which I think is LFP. So let's be generous and use the 3x figure, and not the lower end of the spectrum.
1864 miles / 3 = 621.3 miles, which comes close to the recent figure of 607 achieved in a test for the Escalade IQ. Important to note that GM only claims 465 miles of range that, and that test only achieved that by limiting speed to 60 mph.
So, the highest range "common" car, which definitely does not use the least dense battery, can achieve reliably only 465 miles. So if that switched to this new tech, it would get some 1000 miles at best (which is great, but close to half what's promised). Which begs the question: what currently in production car were they thinking of when touting a 3000 km range?
And now comes my assertion: that car doesn't exist. They're full of it and they know, they just wanted something for headlines. And the specialized media was supposed to catch that but didn't, because journalism has been reduced to parroting press releases, devoid of any critical thinking.
Note that headline says "we have questions", but didn't ask any of that, which would be the first thing to ask: is this true? If it wasn't for the very sane point at the end that nobody wants a 1800 mile range vehicle, the whole article would be little more than a puff piece for Huawei. Bottom tier journalism.
Yeah, I'm sure it'll all drop in practical use. But if the energy density is anywhere near that, the making smaller batteries would be great.
What I mean is that a battery doesn't have wheels. It can't go anywhere, so you can't give it a range rating unless you put it in a vehicle. Any battery range rating is bullshit.
If you take an ebike with a range of 200 km and take it's battery out and put it on a Nissan Leaf, it won't go 20 km. If you take a Cadillac Escalade battery and put in a Leaf somehow, it will definitely achieve a lot more than the 600 miles it did on the SUV.