Comment Re:Acting like Broadcom (Score 1) 161
You are generalizing everyone to your personal usecase. Someone who lives in hot climate could argue heated seats and steering wheel are useless, so manufacturer should be entitled to just disable them at will to reduce their warranty costs?
I'm not generalizing at all. There are real grid stability reasons why you don't want someone drawing that much power to charge their car fully in four hours. If your use case requires fast charging, you need to have grid batteries to spread your impact out over time, or else you are causing significant problems. A few people doing that isn't a big deal, but if everybody did it, it would be apocalyptic. That's why the target for automakers should be fully charging the car overnight, or 10+ hours.
Additionally:
- You're dragging around the extra weight of additional/larger charger hardware, which wastes energy.
- Everyone who doesn't have the three-phase connection and high-amperage breaker setup will be using the charging hardware at a fraction of its rated capacity, which is likely to be less efficient.
- Compared with a dedicated HVDC charger, you're drawing power at a higher amperage and lower voltage for a longer distance, which wastes even more energy.
- It probably involves an entire additional charging board, which means one more set of components that can fail and require service.
- Most of the the locations where you would charge likely do not support such fast AC charging speeds, so chances are you'll mostly benefit from it at home anyway.
And while the folks who take advantage of that extra charging speed might save a little money in the manufacturing cost compared with installing an external HVDC charger, it still adds up to far less than the amount of money wasted on bigger hardware by everyone who got that hardware but doesn't need it.
It's not even close to being a reasonable engineering tradeoff, IMO. You're far better off focusing on making HVDC chargers cheap. And for the amount of effort required to keep the unnecessarily complex hardware going long-term (manufacturing replacement parts, stocking them, etc.), the manufacturer would probably be better off just buying HVDC chargers wholesale and giving them to customers who complain. A HVDC charger with 22kW output costs only about $3k.