labpadre-lurker t1_is3z3ml wrote on October 13, 2022 at 3:07 AM

Reply to comment by SemanticTriangle in A breakthrough in electric vehicle battery design has enabled a 10-minute charge time for a typical EV battery. The record-breaking combination of a shorter charge time and more energy acquired for longer travel range was announced today by Wagamaga

This, and how reliable is it? I would assume it would have at least the life expectancy of older methods.

astrangeparrot t1_is4c6dc wrote on October 13, 2022 at 5:15 AM

This was my first question. Faster charging generates heat quicker and heat is the primary enemy of batteries.

Bozzzzzzz t1_is4dx34 wrote on October 13, 2022 at 5:36 AM

Sounds like a key breakthrough is the nickel foil, which self regulates the temp and reactivity of the battery.

astrangeparrot t1_is4fwkj wrote on October 13, 2022 at 6:00 AM

I am unconvinced by just an article that a few grams of nickel can regulate the temperature generated by 50~ish mWh being shot into a box of 18650s in the space of 10 minutes, but I do hope that I'm wrong.

ExcerptsAndCitations t1_is5uqd9 wrote on October 13, 2022 at 2:58 PM

The heat will be towed outside of the environment.

Bozzzzzzz t1_is4g72g wrote on October 13, 2022 at 6:03 AM

Well I’m not here to convince anyone but it does state that from what I read, as well as saying the nickel foil cools from the inside somehow vs outside, as is the usual approach, so it is fundamentally different at least.

astrangeparrot t1_is4gop3 wrote on October 13, 2022 at 6:09 AM

Oh, certainly. I've grown sadly skeptical of advances in the tech sector when it comes to batteries. The steam engine and internal combustion engines have had slow, steady, measured progress over the years, and batteries... Well... We got electric cars to work, mostly.

In 20 more years we might be there for everyone. That's the dream.

40for60 t1_is5r4p9 wrote on October 13, 2022 at 2:34 PM

I think what they are saying is that this specific system would be used on a vehicle with a smaller battery so the heat would be less of a factor. Maybe something like a delivery vehicle that makes short trips and might sit often. If you never intend on taking the vehicle on a long trip then the larger battery wouldn't be necessary and an unneeded cost.

tkenben t1_is6in88 wrote on October 13, 2022 at 5:35 PM

This. Plus batteries are heavy. Less mass is always better.