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BMW EV achieves 1000km in range using Dual-Chemistry batteries

forbes.com

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Re: BMW EV achieves 1000km in range using Dual-Chemistry batteries

#81

Post by natch »

MostlyStable wrote: post #74
natch wrote: post #49

Earlier quoted context omitted.

I’d rather not swipe a card or use an app.

As opposed to what? Paying with cash? If your concern is trackability, then I'm pretty sure you can buy pre-loaded credit cards that are as anonymous as cash. If you are concerned about convenience, it sure seems to me that swiping a card is easier than buying gas with cash is. -edit- Oh you mean the Tesla thing. That's a nah from me dawg. I don't mind having the option, but having that as the _only_ method of paymen…

It’s not the only way to charge; you could instead charge a Tesla at non-Tesla stations where you swipe a card. But for the Tesla way, why is it anti user? It’s not like they are monetizing your location data. Sure they could in theory but they bend over backwards pretty far not to gather private data in general. I suppose if they got purchased by another company maybe? But I don’t see that happening.

Re: BMW EV achieves 1000km in range using Dual-Chemistry batteries

#82

Post by dangus »

bryanlarsen wrote: post #70
dangus wrote: post #67

Earlier quoted context omitted.

But if you’re at something like 600 miles that’s basically the maximum most anyone is willing to (or should ) drive in a day (10 hours at 60mph average), so that means you can use destination AC charging instead of DC fast charging because you now have 8+ hours of sleeping time instead of wanting to keep your break time under 20-30 minutes or so. This is why I want my first EV to have a range like that. I’ll be able…

Good point. But we didn't always have destination AC charging; sometimes we were charging overnight on 120V instead. If you're driving this theoretical 600 mile vehicle you can't charge it overnight on AC anyways. A level 2 charger is typically 10kW or 40amps. A 600 mile battery is likely at least 200kWh, a 20 hour charge at 10kW.

Still, a 10 hour AC charge would get you a sizable chunk of that total range and eliminate a stop that where must charge at for at least one day of your trip.

Selfishly, I have family in this range where it would be nice to get all the way to their house without needing to charge. I would probably pay to have a decent AC charger installed in their house. Spend the weekend there and I’d leave with a full battery, and never touch a DC fast charger.

Re: BMW EV achieves 1000km in range using Dual-Chemistry batteries

#83

Post by rasz »

tromp wrote: post #45

Mercedes achieved a 1000km range with a regular 100kWh battery by making an extremely efficient car with a drag coefficient of only 0.17 [1] [1] https://en.wikipedia.org/wiki/Mercedes-Benz_Vision_EQXX

This is a one off concept with fake doors. Think Volkswagen XL1 but even more ridiculous.

Re: BMW EV achieves 1000km in range using Dual-Chemistry batteries

#85

Post by jaredhallen »

bwanab wrote: post #66

This seems like cool technology, but I can't help but to believe that people are concentrating on the wrong problem. Range is important up to a point, but the more important problems to solve are 1) a recharging infrastructure that makes it so that EVs don't need such huge batteries in the first place and 2) recharge speed needs to be at the level of plug-in, use the bathroom, un-plug and go.

Well I guess that depends on how long you stay in the bathroom.

Joking aside, though, that's a tough problem. It's just an awful lot of current.

Re: BMW EV achieves 1000km in range using Dual-Chemistry batteries

#86

Post by _ea1k »

adrianN wrote: post #34
_ea1k wrote: post #24

Earlier quoted context omitted.

It is a bit different from the rocket equation. The impact of weight on energy consumed per mile in a car is not particularly large. You can add hundreds of pounds and the impact will be negligible.

At least if you have regenerative brakes. Otherwise weight matters in stop and go traffic quite a bit.

With EVs, they all have regen, but also, efficiency for range purposes primarily matters at highway speeds. There isn't a lot of stop and go there.

Re: BMW EV achieves 1000km in range using Dual-Chemistry batteries

#87

Post by AtlasBarfed »

adastra22 wrote: post #51
blake1 wrote: post #44

Earlier quoted context omitted.

I dunno. Honda doesn’t offer an electric CR-V, but they’re coming out with the Prologue, which is slightly cheaper than the comparable Passport. Passport: $43k Prologue: $48k - $7.5k tax credit.

Tax credit shouldn’t be included as it is inconsistently hard to get, and not available across all markets. Checking Honda dealership near me, g there are configured CRVs that can be driven off the lot for $35k, without even considering that you can almost always haggle for good dealer markdowns on ICE cars but not EVs.

Why not? Environmental effects of carbon aren't accounted for in the cost of an ICE

Re: BMW EV achieves 1000km in range using Dual-Chemistry batteries

#88

Post by AtlasBarfed »

prmoustache wrote: post #21
marcosdumay wrote: post #6

Earlier quoted context omitted.

Well, I really think 500 miles is too high of a lower bound, but when you reach 1000 km, it stops mattering again. This is about how long you can travel before stopping to rest.

At this kind of mileage in a day you just really need to question your decision making skills if you are living in a country with a decent railway network. However that is nice because it means you can do 3 300 miles trips and only charge at home when the price is right. That is the most relevant part to me. One thing is article doesn't mention is the average speed. I looked at a few EV in the constructors websites a…

Have you lived in the Midwest or mountain United states? There won't be good rail there ever. The need for a 500-600 mile range (especially for the pickup truck drivers that tow) is far more apparent.but so will the routine nature of using the long range and dropping the lifetime of this battery scheme.

Which is weird because I think these are the guys who did a Michigan demonstration of range last year, a classic Midwest long miles to drive state for any travel

Also the notion that rail is cheaper over long haul for people transport might be incorrect. Self-driving (highway self driving is much easier than robo taxis) EVs, and roads are cheaper to build and more flexible than rail.

Rail wins only on really high congestion or very large loads.

Also, 18mph on a bike is hard for almost all people that aren't athletes. I'm a former Ironman triathlete and I know the range of performance for heavily trained athletes.

But yeah, doing range calcs at those speeds is ridiculous, unless you are discussing a pure commuter car use case.

Re: BMW EV achieves 1000km in range using Dual-Chemistry batteries

#89

Post by bryanlarsen »

dangus wrote: post #82
bryanlarsen wrote: post #70

Earlier quoted context omitted.

Good point. But we didn't always have destination AC charging; sometimes we were charging overnight on 120V instead. If you're driving this theoretical 600 mile vehicle you can't charge it overnight on AC anyways. A level 2 charger is typically 10kW or 40amps. A 600 mile battery is likely at least 200kWh, a 20 hour charge at 10kW.

Still, a 10 hour AC charge would get you a sizable chunk of that total range and eliminate a stop that where must charge at for at least one day of your trip. Selfishly, I have family in this range where it would be nice to get all the way to their house without needing to charge. I would probably pay to have a decent AC charger installed in their house. Spend the weekend there and I’d leave with a full battery, and…

Assuming that you mean your family is 500-620 miles away, are you saying you'd drive that far without stopping? At the minimum you'd think that'd require 2 10 minute bathroom breaks, and if that was enough to add 300 miles of range to a 300 mile car it wouldn't slow anybody down.

We have a >300 mile range on our car. You can recharge that over a long weekend on 120V; no need to install any extra equipment.

Re: BMW EV achieves 1000km in range using Dual-Chemistry batteries

#90

Post by dangus »

bryanlarsen wrote: post #89
dangus wrote: post #82

Earlier quoted context omitted.

Still, a 10 hour AC charge would get you a sizable chunk of that total range and eliminate a stop that where must charge at for at least one day of your trip. Selfishly, I have family in this range where it would be nice to get all the way to their house without needing to charge. I would probably pay to have a decent AC charger installed in their house. Spend the weekend there and I’d leave with a full battery, and…

Assuming that you mean your family is 500-620 miles away, are you saying you'd drive that far without stopping? At the minimum you'd think that'd require 2 10 minute bathroom breaks, and if that was enough to add 300 miles of range to a 300 mile car it wouldn't slow anybody down. We have a >300 mile range on our car. You can recharge that over a long weekend on 120V; no need to install any extra equipment.

Of course I would stop multiple times, but it would improve the trip if I didn't have to stop in some of the obscure places where many EV chargers are located and instead stop at normal rest stops along the highway. That's supposed to be a short term issue as charging networks expand but truthfully there hasn't been very much movement in that regard.

Try to plan a trip from Atlanta, GA to Miami, FL. You aren't in a Tesla and your charging stops must always include a restroom. I think it might be legitimately impossible.

It's not like a gas car where you can just not plan anything at all and expect to find a place to stop to fuel your vehicle that has a restroom and convenience store all in the same place. You will instead expect to be in places that aren't really designed for short stops like Walmart/Costco/shopping mall parking lots. A 5 minute stop turns into a 20 minute charging stop plus a second stop to use the restroom or get hot foot.

The status quo is that you pay more for an EV and get a worse experience than the people who are paying less.

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