Featured Tesla applies for patents for improved batteries

I was reading that one earlier. Sounds like it's the missing link for their class 8 tractor.

 

We already have a million-mile battery. The issue isn't longevity, it's energy storage at a particular longevity. The Lithium Ion batteries on the ISS are going to last over 100,000 cycles, but at low capacity utilization (low energy storage). The problem with Lithium Ion batteries is that they don't store enough energy even at 100% capacity utilization and poor longevity (under 500 cycles), much less at 70% and good longevity (>5,000 cycles).

100% is too low already, at least with present day charging infrastructure. A Model S needs a 200kWh battery, or so, and it needs to cost around $4,000.

 

musk is a genius, and making the world a better place in so many ways. with this patent, the competition will be 10 years behind

 

A patent is nice wall dressing. My name is the lead on one. But a patent is entirely different from a selling and making a profit product. Until that emerges from the labs and into the real world, I don't get excited.

 

i'm just watching the teardown progressions, amazing

 

If 100% is too low you probably don't understand the math.

80% on a model 3 LR RWD is about 277 miles (numbers are not published so from engineering tear downs). 500 cycles x 277 miles = 138 thousand miles. We know it can do a lot more than that. It is probably something like 1500 cycles in 10 years, longer time frames may prove worse. I do not understand how that is not good enough.

That long range pack is about 3.5" thick. The pack in the cyber truck is going to be a double stack which will probably be approximately twice as thick. Is 555 mile range at 80% still not good enough? That's 2016 technology. We know with the R&D and maxwell acquisition tesla can do much better. Maxwell tech should lower the cost/kwh and increase energy density. Since most daily drives are less than 40 miles it seems pretty straight forward that a standard plus type pack (250 mile rangre) charged normally to 200 miles with 2500 cycles = 500 thosand miles. Make the pack larger and you get your million miles but I'm sure as years go by the cells age and this is for a period of time.

 

I'm a Power Electrical Engineer. Trust me, I understand the math.

Which is about half what is needed.

The problem isn't the total, it's the peaks - the times when you need to drive hundreds of miles through no-charger-land, possibly in the winter when the range is cut by 40-50%.

Now you do.

Not for a truck. It's a little closer, but when you add in towing and cold temperatures, it's still not close.

Watch this:

 

Do current Teslas have tow mode yet?
I'll assume, or maybe not! it's on the schedule for cyberturck.

 

The Model S had a fair to rating, but I think it was dropped when the Model X came out. If the Model 3 has one, it will likely be the same once the Y arrives.

 

you know what they say, when you assume .......



the non- wiseguy answer is yes, it's got a nice tow rating. It's an option - the X only.

basing that on?
longest range Model S is now over 90% of the way to one million kilometers (~560K miles) and it's still ticking. Several other Model S's have over 400K miles racked up on them ... with very acceptable levels of low capacity loss (not to say they'll run for ever ... but comparable to ICE at least.
Tesla Owner Breaks Record, Drives Car 900,000 Kilometers
That Model S has over 2,300 charges on it so far .... so .... not sure i understand the complaint ... is it because these cannon-ballers are 'only' 6 & 7 years old? or because they're 'only' doing a half million miles (like so many of us really keep cars that long anyway).
Heck, there are over 1/4 million crappy 100 mile leafs on the road .... & isn't that because such a small percent of folk ever need to go that far (100's & hundreds of miles each day) in any car? But heck, if you need to drive 1,000 miles a day a few times a year .... there's always the gasser, right?

.

 

Lousy range especially in cold, wet or snowy conditions or when towing. I'll bet that Model X with the kluge had a range of under 100 miles.

 

I wonder how often he water skis in rainy snowy conditions

.

 

I've towed a boat, through the mountains in the snow from the Denver area to Blue Mesa reservoir - a 5 hour drive over two big passes - and waterskied when we got there, mostly because fishing is so boring. I've driven from the Denver area to Turquoise reservoir (above 10,000 feet and an over 2 hour drive), camped, fished and waterskied in 40 degree water, several times.

 

In your Prius??!?

 

Not hardly.

 

If your Prius can’t handle 100% of your needs, why did you buy it??

No need to answer, it is a rhetorical question

 

assumption = root of all evil
or sometin like that

 

It can, and it does. I no longer need to tow. But it does hold my family of four, my model airplanes, the cargo I need to carry, and it has taken me on numerous trouble-free trips across 10 states, all without the need to spend more than 2 minutes charging or driving more than 1 block out of my way.