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Re: All "Future" battery technology thread

Posted: Mon Nov 19, 2018 11:23 am
by JRP3
Why would anyone do that when Tesla already makes full sized vehicles with 100kwh packs?

Re: All "Future" battery technology thread

Posted: Thu Apr 11, 2019 5:41 pm
by GRA
GCC:
Ford partnering with Solid Power to develop solid-state batteries for next-gen EVs
https://www.greencarcongress.com/2019/0 ... power.html
. . . Solid Power’s solid-state technology combines a cathode, metallic lithium anode, and a safe, inorganic solid electrolyte layer. Solid-state batteries offer improved energy and safety as compared to current industry-standard lithium-ion batteries.

This partnership will heavily leverage Solid Power’s first fully automated, roll-to-roll production facility, which is anticipated to be fully operational in Q2 2019. . . .

Potential benefits of Solid Power’s ASSBs include:
  • Fifty percent higher energy vs. current state-of-the-art (SOTA) lithium-ion, which can increase at the module- and pack-level due to design simplicity.

    Substantially improved safety due to the elimination of the flammable liquid electrolyte as used in lithium-ion.

    Low-cost battery-pack designs through minimization of safety features and simplified thermal management.

    High manufacturability due to significant compatibility with automated, industry-standard, roll-to-roll production. . . .
There's a comparison chart. Biggest issue I see is the minimum operating temp, only 0 deg. C for these batteries (but 150 deg. C max). They claim -20 - +60C for current Li-ion, although most I'm aware of are -30C.

Re: All "Future" battery technology thread

Posted: Wed Jul 29, 2020 10:05 pm
by GRA
ABG:
Toyota says it’s on track to produce solid-state batteries by 2025

It had planned to showcase them at the 2020 Tokyo Summer Olympics, which were postponed

https://www.autoblog.com/2020/07/28/toy ... ries-2025/

Toyota has developed a working prototype of its long-promised solid-state batteries that are operating in running concept vehicles, and the company remains on track for limited production of them by 2025. . . .

Solid-state batteries, which replace liquid electrolyte with a solid, are seen by some as the “holy grail” of electric vehicle technology. They have the potential for higher energy density and range, greater safety, faster recharging and longer lifespan, in addition to being less prone to problems with extreme temperatures. But the technology presents many challenges, some of which Kaita discussed. Toyota has been talking about solid-state batteries for at least a decade, but appears to have backed off some of its earlier, ambitious goals. Its current goal is reportedly to develop a battery that hangs on to more than 90% of its original performance over as long as 30 years.

According to AN, Toyota has developed prototype cells shaped like plates that are about the size and thickness of a thin spiral notebook, sealed in pouches and arranged in modules. It’s using a sulfur-based electrolyte that appears to more efficiently transfer lithium ions between negative and positive electrodes, and charging from zero to full takes less than 15 minutes. But one of the challenges is reportedly developing an electrolyte that can be densely compacted while remaining flexible, all without negatively affecting battery performance over time. One other challenge: how to manufacture the cells in an ultra-dry environment in high volumes. . . .

Re: All "Future" battery technology thread

Posted: Wed Jul 29, 2020 10:56 pm
by LeftieBiker
One other challenge: how to manufacture the cells in an ultra-dry environment in high volumes. .

Maybe they should visit a lithium battery factory...

Re: All "Future" battery technology thread

Posted: Thu Jul 30, 2020 12:52 am
by GRA
LeftieBiker wrote:
Wed Jul 29, 2020 10:56 pm
One other challenge: how to manufacture the cells in an ultra-dry environment in high volumes. .

Maybe they should visit a lithium battery factory...

I presume that the requirements are considerably more stringent. Toyota has plenty of engineering talent and know how, so if the answer were as obvious as you suggest, I think they would have figured that out already.

It's not as if they have no experience with Li-ion batteries - the Prius and RAV4 Primes both use them, as did the PiP. The PiP used Panasonic cells. I've been unable to find who supplies the cells for the current PHEVs. I presume Toyota designed the packs.

Re: All "Future" battery technology thread

Posted: Fri Oct 23, 2020 7:57 pm
by GRA
GCR:
Battery supplier SKI: 500 miles of range with 20 minutes of fast-charging, ready in 2021
https://www.greencarreports.com/news/11 ... dy-in-2021

The South Korean supplier SK Innovation revealed Thursday that it’s developing cells that will only need two quick 10-minute charges to cover more than 500 miles of range when installed in an EV.

SKI said that it expects to complete the development of the new cells by the first half of next year—or as soon as the end of the year—after which they “can play a significant role in the spread of EVs,” the company said in an accompanying press release. . . .

For SKI's near-future tech, EVs might be able to pack a more modest cell capacity—in a small-car footprint, for instance—and still be able to do long-distance road trips with a minimum of break time for charging.

The supplier says that it has decided to focus its development efforts on “long-life batteries that enable long-range driving,” and early this year revealed a new “SK Inside” branding strategy aiming for more awareness. . . .

Re: All "Future" battery technology thread

Posted: Sat Oct 24, 2020 7:05 am
by JRP3
Another meaningless announcement. "500 miles" in Korea is not EPA so that needs to be de-rated, probably closer to 400 miles, and the wording "500 miles with 2 charges" is purposely misleading to make it seem as if it has 500 miles of range when it's really closer to 200 miles on a charge. This is a nothing burger.

Re: All "Future" battery technology thread

Posted: Sat Oct 24, 2020 7:57 am
by SageBrush
JRP3 wrote:
Sat Oct 24, 2020 7:05 am
Another meaningless announcement. "500 miles" in Korea is not EPA so that needs to be de-rated, probably closer to 400 miles, and the wording "500 miles with 2 charges" is purposely misleading to make it seem as if it has 500 miles of range when it's really closer to 200 miles on a charge. This is a nothing burger.
My impression from the blurb is that SKI is focusing on charge rate, stating 25 miles of range per minute of charging. That sounds super impressive although more details are needed to really know what they have achieved. I presume the advert sleight of hand describing two charge sessions is a reflection of the slower speeds after ~ 50% SoC so the advert is saying charge speeds at low SoC.

For now, the tabless cell Tesla approach which relies on heat removal is reaching 15+ EPA miles per minute of added range from 5 - 60% SoC is a lot more credible and does not introduce any unwanted side-effects into the battery chemistry.