• @Gingerlegs@lemmy.world
    link
    fedilink
    English
    185 months ago

    For some reason this reminds me of a cheap Chinese knockoff rotary tool I got from Amazon which the instructions said: “use until loud bang and smoke. Then replace.”

  • dual_sport_dork 🐧🗡️
    link
    fedilink
    English
    845 months ago

    This horseshit again? Physical product available for independent analysis, or it didn’t happen.

    It’s not like the Chinese are famous for lying about the specs on things they manufacture or anything. Every week we hear about some Chinese company poised to “revolutionize” the EV with pie-in-the-sky range figures and yet the market continues to remain resolutely un-revolutionized.

    And as usual, this article harps on “range” as if that’s not an easily fudged figure. The real numbers we need to see are watts per volume, or watts per mass. And number of charge cycles tolerated, and how many before it loses what percentage of capacity. Any idiot can claim to make a 1,300 mile, 2,000 mile, 5,000 mile, 1,000,000 mile battery pack – just make the pack bigger, or the vehicle lighter, or both. That tells us nothing meaningful whatsoever about the battery chemistry itself. Advertising us what hypothetical ranges someone thinks a pack made of these “could” build is meaningless. We could build a 1300 mile battery pack right now with LiFePo cells if we wanted to, via the simple expedient of filling a dump truck with the things.

    • @ilmagico@lemmy.world
      link
      fedilink
      English
      35 months ago

      The real numbers we need to see are watts per volume, or watts per mass

      You have to chase it down, following the link to electrek.co, but then it says: “the prototype cells house an energy density of 720 Wh/kg”

      (of course, I’m just stating what is claimed, no idea how true)

        • @ilmagico@lemmy.world
          link
          fedilink
          English
          15 months ago

          You’re right, I didn’t see it! I just saw a bunch of chinese writings, which I cannot read, so didn’t bother trying to read even the only thing I could 😅

          • @GreyEyedGhost@lemmy.ca
            link
            fedilink
            English
            15 months ago

            Yeah, I’m really sick of the hype train, so that was the only info I looked for. Honestly, I was a little surprised it was that easy to find, and that is still no guarantee it’s accurate.

      • @UnderpantsWeevil@lemmy.world
        link
        fedilink
        English
        1
        edit-2
        5 months ago

        Battery density has been improving steadily for the last three decades.

        Battery costs keep falling while quality rises. As volumes increased, battery costs plummeted and energy density — a key metric of a battery’s quality — rose steadily. Over the past 30 years, battery costs have fallen by a dramatic 99 percent; meanwhile, the density of top-tier cells has risen fivefold

        With regards to anodes, a number of chemistry changes have the potential to improve energy density (watt-hour per kilogram, or Wh/kg). For example, silicon can be used to replace all or some of the graphite in the anode in order to make it lighter and thus increase the energy density. Silicon-doped graphite already entered the market a few years ago, and now around 30% of anodes contain silicon. Another option is innovative lithium metal anodes, which could yield even greater energy density when they become commercially available.

        What’s more, the Chinese market is both the leading producer and consumer of battery technology. So its weird to reflexively doubt that a Chinese firm would release a new higher-efficiency battery design.

        Given that this is a prototype, its entirely unclear if the model is cost-efficient to mass manufacture or efficiently scalable based on available resources. But I’m hard pressed to discount the claim on its face simply because its got “China” in the headline.

          • @UnderpantsWeevil@lemmy.world
            link
            fedilink
            English
            05 months ago

            Its not even like “China” invented a new battery tech. It’s some battery plant in China which is the place where most batteries are created that’s innovated on a design.

            There are battery plants in Atlanta, Georgia and Heide, Germany who are pursuing similar advancements. They just don’t have the money or the manpower equal to their Chinese peers.

          • gian
            link
            fedilink
            English
            65 months ago

            I think you are seeing this as racism when it is just some old good skepticism about a country that is famous for faking everything.

            Maybe they really done what they say, or maybe it is just some proof of concept that need to be ported, if possible, to a viable product stage or maybe it is just a fake, we will see.

        • @michaelmrose@lemmy.world
          link
          fedilink
          English
          15 months ago

          I would instantly discount it based purely on not having third party verification or enough details for a third party to replicate.

    • billwashere
      link
      fedilink
      English
      45 months ago

      Exactly. It’s like an article I saw about some new internet tech that was “X times faster than broadband”. Broadband is a type of transmission using multiple frequency carrier waves to transmit data. It ain’t a speed.

      Wh/kg or yes maybe volume Wh/cm^3…

      The only other thing I’d care about it charge speed. Maybe it doesn’t last as long but I can fully charge in 10 seconds? Yeah I’m interested. Hell I’ve never had a car yet get the estimated miles per gallon on the sticker. It’s all bistromathics as far as I’m concerned.

  • @chronicledmonocle@lemmy.world
    link
    fedilink
    English
    185 months ago

    If the company is able to scale this technology large enough for consumer vehicles while keeping prices down, it could easily double the range of the farthest-driving EVs on the road today.

    That’s a big IF. TL;DR: They haven’t developed a means of making this scalable and able to be mass manufactured. Until they do, this is another “revolutionary” battery tech that may or may not actually be used due to cost of production. Most likely in the “not” category.

    If you want to make EVs more popular, make them with Sodium-Ion batteries that are cheaper than ICE vehicles. They’ll sell better as a result.

    Hardly anybody needs an EV with more than 200 miles of range if they’re plugging in each night. Most people’s commute is round-trip sub-50 miles. “Range anxiety” is 95%+ of the time a “problem” that stupid people have for their theoretical future that never actually happens. Most people are impractical idiots.

    • @CalcProgrammer1@lemmy.ml
      link
      fedilink
      English
      115 months ago

      Range anxiety isn’t about your daily commute, it’s about the few times a year road trip you make across multiple states to see family on holidays. Having to stop and charge every 150 miles (as I wouldn’t trust letting it go below 50) sucks if you’re trying to go 500+ miles. Owning a gas car taking up space in your garage and costing you taxes and registration just to use a handful of times a year is wasteful. Renting a car is an option, but it’s cumbersome and if you plan to stay a while, expensive. I would not want an EV with less than 300 miles range. You have to factor in worst case scenarios as well, sometimes it gets dreadfully cold and windy in the winter. When it’s -10F and the wind is howling you’re cranking the (usually resistive) heat and driving head first into the wind kills your efficiency. These are real scenarios I have had to drive in my current car (Volt, so plug in hybrid) and my battery range can be halved (from 35+ miles under 20) in these worst case scenarios, but at least I can fall back on gas. I want to go EV for my next car but if I can’t reliably make it to and from my parents’ house 300 miles away on a bad winter’s Christmas break then it’s just not a feasible option yet, even if my drive to work is maybe 15 miles round trip. Also, charging station density is an issue. I would need to go half way to their house, 150 miles, to reach a charging station. You can’t just stop anywhere to recharge if you have a low range EV.

    • Billiam
      link
      fedilink
      English
      65 months ago

      Hardly anybody needs an EV with more than 200 miles of range if they’re plugging in each night.

      Speaking of big IFs. Not everybody lives where a charger is convenient or can have one installed in their residence.

      • @chronicledmonocle@lemmy.world
        link
        fedilink
        English
        -15 months ago

        Most people have the option of plugging in where they live and/or work. The only argument would be for apartment complexes. Townhouses, single family homes, etc. are easy to switch to electric.

    • @Gregorech@lemmy.world
      link
      fedilink
      English
      45 months ago

      Range anxiety is in the what if scenario, can I go from Los Angeles to Las Vegas on one charge, batteries need to last longer and be cheaper or charge quicker. being universal and swappable wouldalso work.

  • @jordanlund@lemmy.world
    link
    fedilink
    English
    85 months ago

    Take EVs out of the equation and the ramifications of this tech (or Toyota’s) is huge, if true.

    Imagine an electric wheelchair you only had to charge monthly, or that could run on one charge effectively forever.

    • @werefreeatlast@lemmy.world
      link
      fedilink
      English
      55 months ago

      First they need Toyota to test their chemistry and develop their battery production system…it’s part of the way Chinese companies develop technology.

      If Toyota can do it, China will too! A win-win!

    • @ryrybang@lemmy.world
      link
      fedilink
      English
      135 months ago

      Ha, why was this downvoted? Sketchy website “reports” proprietary Chinese research firm’s accomplishment by rehashing the firm’s press release about an unbelievable claim with no other evidence. This got more red flags than the beach before a hurricane.

      At best, this is something they actually did approximate in some kind of lab setting that might be years and years away from being some kind of marketable product.

      The (translated) press release even has a stench all on its own:

      It is expected to fundamentally solve the battery life and safety anxiety of traditional lithium-ion batteries.

  • @Num10ck@lemmy.world
    link
    fedilink
    English
    -55 months ago

    i wonder if/how the EU and US would trust China not to remotely turn massive fleets of electric smart cars into suicide bonbers.

    • @ChicoSuave@lemmy.world
      link
      fedilink
      English
      55 months ago

      Has China done that before? How does a battery seize control of a parent device when it is only connected by power wires?

      • gian
        link
        fedilink
        English
        15 months ago

        How does a battery seize control of a parent device when it is only connected by power wires?

        It does not need to. Just set the battery on fire. Now set 100.000 batteries on fire, simultaneously, in a city, at night.

    • @UnderpantsWeevil@lemmy.world
      link
      fedilink
      English
      25 months ago

      Over the past 30 years, battery costs have fallen by a dramatic 99 percent; meanwhile, the density of top-tier cells has risen fivefold

      • @GreyEyedGhost@lemmy.ca
        link
        fedilink
        English
        15 months ago

        We’ve gone from the most reliable battery being an alkaline through 3 different rechargeable technologies as well. Too bad that research never pans out…

        • @UnderpantsWeevil@lemmy.world
          link
          fedilink
          English
          1
          edit-2
          5 months ago

          Too bad that research never pans out…

          That’s not true

          Better performance in driving electronics and huge money saving are the two major reasons to buy NiMH (Nickel metal Hydride) rechargeable batteries. They can be charged up to 500-1000 times and last longer than alkaline or NiCd batteries. NiMH batteries are ideally compatible with most consumer devices such as digital cameras, game boys, CD players, RC vehicles, PDA’s, portable two-way radios, flash units and many more high drain devices. One set of relatively inexpensive NiMH rechargeable batteries can save you from buying thousands if throwaway alkaline batteries.

  • @pr06lefs@lemmy.ml
    link
    fedilink
    English
    -75 months ago

    Its kind of insane that EV manufacturers are making battery packs out of a lot of individual cells, rather than one integrated unit like this.

    • dual_sport_dork 🐧🗡️
      link
      fedilink
      English
      12
      edit-2
      5 months ago

      That’s how battery chemistry works. Even this, if it is real, is a bunch of individual cells in a bank. There is no alternative; you can’t have sufficient reactivity between dissimilar materials to generate the types of voltages required in a single cell. You need multiples of them in series to hit 200 volts, 400, 600, whatever is required by the vehicle’s drive hardware.

    • Billiam
      link
      fedilink
      English
      45 months ago

      Batteries, being containers for chemical reactions, are subject to the core concepts of chemistry. Namely, that increased surface area increases the speed of the reaction. You could make one enormous battery instead of multiple smaller cells, but you’d never get it to discharge fast enough to make it functionally useful.

    • @halcyoncmdr@lemmy.world
      link
      fedilink
      English
      2
      edit-2
      5 months ago

      Like the other responses, the battery chemistry and design voltage are the major reasons for cell sizes, but also, smaller cells means they can be isolated if necessary.

      In a Tesla battery pack for instance, each cell is connected by a single small wire that also doubles as a fuse. If there is an issue with the cell the wire will heat up and break. opening the circuit and separating that battery cell from the rest of the pack. This also means that a failed cell doesn’t take out a significant portion of battery capacity. Other manufacturers do this as well, but not all, and some implement similar capability in other ways. This method functions as a sort of “passive” option since it doesn’t require the BMS to make a decision to remove those bad batteries from the pack, physics just does it and the BMS adjusts to compensate when the cell no longer is connected.

      Good battery management systems that handle things like charge leveling individual cells, can mean the difference between batteries degrading noticeably in a few years and the pack as a whole lasting a decade before that noticeable degradation. There are a lot of poor battery management systems on the market, EVs are no exception and if anything they make this issue more noticeable because of the increased usage.

  • mechoman444
    link
    fedilink
    English
    35 months ago

    A couple of years ago I saw an article on Toyota inventing something called solid state battery’s… Never heard anything about that again.

    • @GreyEyedGhost@lemmy.ca
      link
      fedilink
      English
      135 months ago

      So I went to my search engine of choice, typed in solid state battery, set the time range to 1 month, went to the news tab, and this is the first link. 2 days old.

      Just because no one went out of their way to remind you that researchers are continuing their research doesn’t mean they stopped doing it. And when the bar is this low to satisfy your curiosity, it really is on you. It would have taken less time to get the highlights than it would to post your comment.

      • mechoman444
        link
        fedilink
        English
        -45 months ago

        You went on google and found an article indicating LG is still trying to develop solid state batteries.

        Here an article I googled about a cure for cancer.

        Congratulations on your ability to find things to confirm your bias on google. You’ve just entered the same arena creationists and flat earthers plow around in.

        Not to mention the article you provided was nothing more than “LG is researching solid state batteries” with no supplementary information and feels like it was generated by an AI.

        It’s the internet doofus. People generate articles about anything and everything as long as someone will click on it. Just make sure you also click on the ads as well.

        • @GreyEyedGhost@lemmy.ca
          link
          fedilink
          English
          25 months ago

          Sorry, I forgot that some people say quaint little phrases like “never heard about them again” to mean “still haven’t seen a product released to market.” I also don’t live in a world where companies start multi-billion dollar partnerships with no belief that the corporations will get a return on that investment.

          • mechoman444
            link
            fedilink
            English
            05 months ago

            Sorry, I forgot to say that some people forgot what confirmation bias is.

            That’s all those articles talk about, how they’re going to research this and that. Millions of internet articles are generated every day. They use AI to make them now.

            Of course solid state batteries are a topic of research, people are talking about them all the time. And nothing ever comes of it. Same with “the cure for cancer” or “room temperature super conductors”

            Are you not understanding what I’m eluding to? Or are you intentionally acting obtuse to trigger me?

            • @GreyEyedGhost@lemmy.ca
              link
              fedilink
              English
              2
              edit-2
              5 months ago

              Then I’ll go to the basics. This which is asserted without evidence can be dismissed without evidence. You made your assertion, I provided evidence. You dismissed it with “Well, everybody knows.” And yet, new discoveries are made all the time, research continues apace, and technology advances. Believe what you will. Your faith, or mine, makes no difference.

              Edit: I’m so sorry, I forgot to read a little further for you in my search the first time. Nissan is building a factory and plans on having their first batteries produced in 2025. That’s just one article I saw about it, there were others. My apologies if you find this triggering, as well.