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Joined 2 years ago
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Cake day: August 24th, 2023

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  • I don’t know how many electrical components there are where you can just multiply the power by 500 or 1000 without frying them

    They put an inverter on the battery and can route power more cleanly than from the front of the vehicle in the small battery, without worrying about draining the 12v in front and killing the car from starting. It also lets them do more than the could before as all the new tech is power hungry. (Edit: Think more spiderweb directly to locations, instead of routing everything from 1 point in the front)

    I do agree with you that they all should have started sooner when there were better incentives.

    Edit: Like you aren’t watching Netflix and/or camping in a cooled or heated car for hours on end unless it’s a battery hybrid or BEV and it’s running off the HV battery through an inverter.

    Edit: here’s an article talking about wiring and Ford having 1.6km of extra wiring vs tesla/chinese OEMs who rethought the electronics system specifically for EVs. It’s new thinking like this where you have the HV battery (which is/was expensive) to get your costs down and make it profitable. Less weight, cheaper for parts, and cheaper to install/maintain. This is hundreds of dollars in savings when they’re already struggling on profitability. https://finance.yahoo.com/news/ford-tore-apart-tesla-found-160356371.html









  • It really is as simple as a big battery with a bit of temperature management, couple of electric motors (breathtakingly simple, very old technology), recharge the 12V battery for all your regular car electronics for which you reuse all your existing parts, and now you have an electric car.

    Lol dude.

    If you want to have a shitty ass car sure.

    Its a whole new way of thinking about heating and cooling the battery which has to be a car wide system, otherwise you waste so much heat and end up having an inefficient car that needs more batteries, which adds more weight which lowers range which makes it harder to sell.

    And ignoring the HV battery and doing everything off the 12v is also a waste, they all redesign the electrical system to work off the HV battery through an inverter. Some is still off of the 12v battery but its not optimized if you do that only using the 12v.

    Then you gotta totally rethink aerodynamics because every bit counts towards getting good efficiency, otherwise you’re once again adding more batteries which further increases cost while lowering efficiency.

    Same for motors, ya, we have motors, but efficient motors for cars, wasn’t a thing. All the EV companies are iterating heavily on making a super efficient motor and for the first few iterations, they weren’t as efficient as they could be, meaning more batteries, so more weight more expensive less efficient. Rare earth magnets for permanent magnet motors aren’t cheap, and there are trade offs to not using them in motors, to the point where some use a mix of different types of motors, which again is a complicated process to work through.

    Then they gotta do the whole HV charging architecture which has led to multiple recalls across many brands. We have Hyundai with controller problems for years now.

    We have cars being recalled due to fire risk not from the cells themselves which would be the OEM like LGs fault, but from bad battery architecture as well which is the car manufacturers fault.

    We have cars like the mustang mach e originally overheating and being throttled.

    We have early tries like Nisan with air cooling on the leaf which lead to batteries going bad early.

    The list goes on and on, its not simple, or easy to make profitable.

    Companies like Hyundai have at least committed and gone through the many years of losses to get to where they are now, and we have more knowledge today, but its still hard and complicated and expensive.

    Edit: its not like Tesla started with the Model Y. They had to figure out how to do things in the Model S cost effectively while building wholly new supply chains which was expensive, which gave them more leeway on margins. GM went the opposite route and started with the Bolt, but it was a money loser even though it had appeal. The bolt was very good for learning though.