EV adoption in US is happening faster than predicted • Hacker News Board

Re: EV adoption in US is happening faster than predicted

#221

Post by silverspoonin » Mon, Sep 05, 2022, 5:01 AM UTC

yurishimo wrote: post #190

reaperducer wrote: post #183

Earlier quoted context omitted.

88,000 people in perhaps 50,000 vehicles all taking the ONE road out of town. That's an interesting point. We see this a couple of times a year in the United States — tens, or even hundreds of thousands of people evacuating because of an approaching hurricane. It takes hours and hours and hours to go not very far. And when you finally get someplace with an open hotel room, it's hundreds of miles away. Although I beli…

At a minimum we need some sort of fast charger that can add 50+ miles in 5 minutes. Granted, in a gas car that's a full tank usually, but let's be reasonable about what we can expect in the near-ish future. Having wireless tech that can charge that fast would be even better. Maybe get on a little conveyer belt similar to an automated carwash and by the time you exit, you have 50 more miles than before. Hell, imagine…

We already have those fast chargers. The average EV gets 3-4 miles/kwh. 50 miles would be about 15 kwh. To deliver 15kwh in 5 minutes, you'd need 180kw charging. The fastest widely available chargers currently go up to 350kw. Kia EV6/Hyundai Ioniq 5 charge from 10-80% (>200 miles) in 18 minutes (due to battery limitations).

Re: EV adoption in US is happening faster than predicted

#222

Post by katbyte » Mon, Sep 05, 2022, 5:02 AM UTC

seanmcdirmid wrote: post #206

al_mandi wrote: post #177

Earlier quoted context omitted.

Part of planning for very long road trips should be to carry a spare can of gas with you to account for incidents.

I never expected to run out of gas on an interstate. We aren't talking about a highway in the middle of nowhere Nevada, supposedly Kansas is populated with little towns everywhere (which seem to close their gas stations at night). And ya, when you are at some place like Crater Lake National Park, you don't really think too deeply about how the next gas station might be 100 miles out. If I was going into the Australia…

Running out of gas is an easy fix, go get a jerry can of petrol. What happens to an ev? Tow to the nearest charger?

Re: EV adoption in US is happening faster than predicted

#223

Post by osigurdson » Mon, Sep 05, 2022, 5:02 AM UTC

epistasis wrote: post #151

sandworm101 wrote: post #138

Earlier quoted context omitted.

The next time I see a farmer I'll pass along that it is "fine" that he continue growing the food people eat. He will appreciate having permission so to do.

I don't think you understand what I was saying "fine" too. But people need to pay for the damage they inflict on the world. Nobody is so "special" or snowflake that they get exempted. Farmers are adults, they can be treated like any other adult in our society.

It seems that we are redefining things such that the only way to cause "damage" to the world is via carbon emissions (humans are very good at focusing on one metric to the exclusion of all others). Is there any "damage" done in having greater numbers of the world's poor die of starvation since we've reduced agricultural output in our quest to reduce carbon emissions? Perhaps we can dabble in fertilizer reduction after we've exhausted carbon capture from coal fired electricity plants (particularly in China and the US who are the largest emitters and still use a lot of coal) or at least converted those to natural gas. Messing with agriculture, particularly right now with the current geopolitical situation is very stupid.

Re: EV adoption in US is happening faster than predicted

#224

Post by josephcsible » Mon, Sep 05, 2022, 5:04 AM UTC

AmericanChopper wrote: post #56

josephcsible wrote: post #48

Earlier quoted context omitted.

It's unfair to ask for an un-networked EV when basically nobody is even making un-networked ICE vehicles anymore.

It’s very simple to find a high quality ICE vehicle that is not substantially networked to remote services, or at least that you can easily disconnect. I brought a brand new one very recently, nobody is able to remotely control the vehicle, and the only surveillance instruments in the car are the ones I choose to carry around with me.

What make and model?

Re: EV adoption in US is happening faster than predicted

#225

Post by notjulianjaynes » Mon, Sep 05, 2022, 5:08 AM UTC

endisneigh wrote: post #74

I love EVs. That being said I wish someone would make an enclosed bicycle/motorcycle that costs less than $2000. Something like that which can go 30mph and had space for 2 days of groceries would be enough for me to eliminate my car all together. I'm cobbling something similar now with a Class 3 cargo ebike, but rain sucks =/ The idealist in me says that electric ebikes could eliminate most of Americas problems in on…

A 30 mph ebike under $2k is absolutely doable. That's the top speed of mine, built with a Craigslist hardtail MTB and a $200 hub motor kit, powered by an electric lawn mower battery I found in an ewaste bin (14s, 7.5ah Samsung 25R cells). This battery can propel me about 8-10 miles (depending on wind, hills, etc.) at full throttle without much pedaling.

The problem is 60 miles range @ 30 mph needs a lot of battery. You can't really pedal fast enough to add a meaningful amount of leg power here, and even if you could, the extra wind resistance compared to tucking your legs in is a wash at best.

There's certainly room for efficiency improvements on my bike, but either way, enough battery to do 60 miles at 30mph SHOULD cost at least $1200-1500. Now if you want to go 20 mph that's a different story.

Re: EV adoption in US is happening faster than predicted

#226

Post by katbyte » Mon, Sep 05, 2022, 5:09 AM UTC

crooked-v wrote: post #164

kevin_thibedeau wrote: post #145

Earlier quoted context omitted.

In remote areas of the US you very well could have only one ambulance.

In the extremely contrived example where two calls come in back to back from locations that are 400 miles apart, the need to charge an EV in the middle of driving for 6 hours straight is going to be a pretty minor factor.

Lol maybe take a look at Canada where towns are 100km apart and an ambulance can potentially be driving constantly on an 8 hour shift. Not to mention the Fact they have huge alternators on them to power all the medical stuff.

Re: EV adoption in US is happening faster than predicted

#227

Post by minhazm » Mon, Sep 05, 2022, 5:10 AM UTC

yurishimo wrote: post #190

reaperducer wrote: post #183

Earlier quoted context omitted.

88,000 people in perhaps 50,000 vehicles all taking the ONE road out of town. That's an interesting point. We see this a couple of times a year in the United States — tens, or even hundreds of thousands of people evacuating because of an approaching hurricane. It takes hours and hours and hours to go not very far. And when you finally get someplace with an open hotel room, it's hundreds of miles away. Although I beli…

At a minimum we need some sort of fast charger that can add 50+ miles in 5 minutes. Granted, in a gas car that's a full tank usually, but let's be reasonable about what we can expect in the near-ish future. Having wireless tech that can charge that fast would be even better. Maybe get on a little conveyer belt similar to an automated carwash and by the time you exit, you have 50 more miles than before. Hell, imagine…

We can already do more than 50 miles of range in 5 minutes. For example a Tesla Model Y is rated at about 0.234 kWh/mile, round up to 0.25 kWh/mile. To get 50 miles of range you need 12.5 kWh, in order to get that in 5 minutes you need a charging speed of 150 kW. Tesla V2 superchargers already do 150 kW and V3 does 250 kW, which would only take 3 minutes to get 50 miles of range. Of course the actual charging curve depends on your battery state of charge but 50 miles in 5 minutes is very achievable in most cases, at least with Tesla.

Now doing this in a portable way is the difficult part. There are a few trucks now that can do 7-10 kW output to charge cars, but that's only about 30-40 miles of range per hour, which is still quite slow. But it might be enough to top you up for 15-20 mins to get you 10-15 miles down the road to a charger. I imagine this will improve though quite a bit as more EVs are adopted. I think if we can get to 50 kW chargers from service vehicles that's good enough. On a 50 kW charger 15 minutes of charging will give you 50 miles of range on a Tesla, and on less efficient cars it will still give you at 30+ miles.

Re: EV adoption in US is happening faster than predicted

#228

Post by [deleted] » Mon, Sep 05, 2022, 5:11 AM UTC

sephamorr wrote: post #130

dixie_land wrote: post #110

Earlier quoted context omitted.

speaking of doomsday, I can stock up on fuel with reasonable effort (storage tank, fuel stabilizer). But you can't easily build your own battery farm

Interesting perspective. Another view: solar panels on your roof, using your car battery for your house nighttime needs means that during doomsday your energy intensive lifestyle doesn't have to change at all.

[deleted]

Re: EV adoption in US is happening faster than predicted

#229

Post by potatochup » Mon, Sep 05, 2022, 5:11 AM UTC

reaperducer wrote: post #194

therealrootuser wrote: post #187

As someone that is currently in the market for a new car, I would love to get an EV, but I also don't have a good way to charge. Seems like most EV owners just charge at their house, but what about people that don't have access to a good power tap? (apartment dwellers, renters, etc.) Sometimes it feels like there is a group of EV elites out there that are predicting the complete demise of ICEs while conveniently down…

what about people that don't have access to a good power tap? (apartment dwellers, renters, etc.) I've lived in two apartment buildings that had electric car chargers. In both buildings, the chargers were constantly engaged. Hopefully some of that electric infrastructure money ends up putting chargers in private and public parking garages. I think that would give people more confidence that they could switch. Related…

Depends on what is doing (see, Tesla sentry mode which keeps the cameras on) but otherwise self-discharge is well under 1%/day for most EVs

Re: EV adoption in US is happening faster than predicted

#230

Post by katbyte » Mon, Sep 05, 2022, 5:12 AM UTC

adgjlsfhk1 wrote: post #195

sandworm101 wrote: post #171

Earlier quoted context omitted.

It is dangerous to assume that everyone lives in a house with a roof, or that they are free to reconfigure thier home's electrical systems. I certainly cannot.

Well if you live in an apartment complex, I'm pretty sure storing large amounts of gasoline in your apartment isn't allowed either, so there's not a difference.

I keep a jerry fan on the back of my truck in the parking garage.