this post was submitted on 11 Feb 2024
435 points (97.6% liked)
Technology
59575 readers
3475 users here now
This is a most excellent place for technology news and articles.
Our Rules
- Follow the lemmy.world rules.
- Only tech related content.
- Be excellent to each another!
- Mod approved content bots can post up to 10 articles per day.
- Threads asking for personal tech support may be deleted.
- Politics threads may be removed.
- No memes allowed as posts, OK to post as comments.
- Only approved bots from the list below, to ask if your bot can be added please contact us.
- Check for duplicates before posting, duplicates may be removed
Approved Bots
founded 1 year ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
Looking forward to the upcoming Toyota announcement that they believe in the future of hydrogen more than ever
Toyota, and Japan as a whole, are in a tricky situation with their electric grid. It's been developed separately by nine different companies in each region; the southern regions use 60 Hz supply cycles, where-as the northern regions (including Tokyo Electric) use 50 Hz. Add to this the populations reluctance for nuclear power after Fukushima, and you get a very fragile supply grid with limited capacity. Toyota is gunning hard for Hydrogen because Japan itself can't support EVs and for some reason it doesn't want to/can't manufacture both.
Okay, but if they don't have the electricity for EVs they definitely don't have enough electricity to waste 2/3 of it turning it into hydrogen and back.
Over 75% of Japanese energy is imported under current circumstances and they have a reluctance to use geothermal for social and economic reasons. Wind is another good choice but they're restricted in where they can deploy it by social and economic concerns
And this is the same country that wanted to mine cobalt off the nearby ocean floor a decade ago. What a strange world.
I mean yeah, but on the other hand with hydrogen you have much more control over when and where you use the electricity as you can choose to manufacture most of it during off-peak periods and when renewables create excess energy. Then you can transport it by pipes or by trucks/ships without overwhelming the electric grid.
You can do off-peak charging with EVs too, that's not a magical hydrogen thing. My hot water system is on its own circuit which can be turned off by the power company whenever they need to cut demand, providers have been doing that sort of thing for decades.
I’m not sure I buy that. Yes, their electrical grid is a mismatched nightmare, that they should have taken the hit on decades ago. However I see that small chargers for things like phones can adjust to pretty much any electrical grid: why shouldn’t we expect the charger in the car to be equally flexible? Either way, it’s converting to DC
Edit: the article didn’t talk about the differences, except frequency: if the only difference is 50Hz vs 60Hz, most analog electrical stuff probably also works on both. The real problem is they don’t have interconnects nor do they have a regulatory structure allowing separate generating oroviders
My main point was about capacity, and how the separate grid(s?) hinder attempts to add the capacity needed for EVs. I wasn't really clear on that though. mb
I thought auto ranging power supplies were typically for voltage but not frequency.
Every one I’ve seen gives ranges like 100-240v ac, at 50-60 Hz.
Then electrical grids are large complex systems defined in analog days and subject to variances for weather, usage, distances, etc, so they also need to support that variability
Even larger appliances like refrigerators, ovens/ranges, etc? Some of these might be 10+ years old.
Digital power supplies usually support most electrical grids
Analog electrical stuff must handle the allowed variability in the grid and may be able to adjust from 60Hz to 50 Hz: for example a clock probably uses a crystal to establish a reliable frequency instead of relying on the grid frequency. Some labels may include this info, especially since everything has been globalized. However it’s going to depend. Some will. Some won’t.
However analog electrical can’t usually adjust between 120v and 240v, or similar, depending on where you are. This is the part where things can fail spectacularly
They also recently announced an anhydrous ammonia engine.
They really really don’t want to do an electric car. Anhydrous ammonia is insanely toxic. You ever spill a like a few drops of gas at the pump and get it on your pants or shoe? Annoying but not a big deal. Do that with anhydrous ammonia and you’ll be in the hospital.
It can also be used to make methamphetamine.
Erm..so...the need to speed, for speed, by speed precursor?
Going to guess this will not change their goal of 200k hydrogen vehicles by 2030. They currently have about 14k out on roads.