Lithium–air battery, they could make electric cars practical.

I don’t know if anyone caught this:

:cry:

I took this to mean each individual cell. As it is stated it would be the battery pack on a whole that is bigger.

As a side note the GM EV car is named the Volt; is the name being used in the last few comments has been ‘Bolt’. Is this a tongue in cheek expression?

They are going to 21700 cells, this has been extensively covered including on BLF

Two different cars, the volt is a battery/gas hybrid, first 60 miles (new version) is electric then switches to gas engine
Bolt is pure EV

Bort

Thank you!

I am getting so jaded. :slight_smile:

The article, and everybody else uses the words “cell” and “battery” as though they are the same thing.
Even though they always use the word battery, meaning cell, I understood they were going to use a size larger than the current 18650 cell. My hope was that a better 18650 would come out of the giga factory.
As the cell size goes up, the surface to volume ratio goes down. As that number goes down, so does the ability to shed heat.
On the other hand, I think, as the size goes up the ability to pack more volume in a given space goes down. I suppose there would be an optimal size and I guess 21700 is closer to it than 18650.

I am a bit long in the tooth and many might already know these figures on the Tesla S:

Li-ion Panasonic 18650A NCA cells

60, 85, 85-performance kWh 85-kWh = 16 modules with 6 groups in series (402 volts, 7104 cells) 60-kWh = 14 modules (352 volts, 6216 cells) Groups contain 74 cells.

I think cost per cell might affect the equation as well. It might take fewer cells to have the same energy even though they take up more space.

+1

If battery energy could be as efficient while reducing both weight and reduced area needed to house them, it would be another big step in the evolution of EV.

Bear in mind that the battery only lasts so long, and the range graduallly reduces, so after a given mileage you will have to buy a new battery, which is expensive. And your calculation is based on current electricity costs and taxation. Any significant increase in electric vehicle usage would lead to a change in road vehicle taxation, without any doubt, especially since we will not have to follow regulations from Brussels.

Tesla has an eight year and unlimited distance on their batteries; I would think in the future that will increase.

I read about someone who drive over 100k and battery range had decreased by about 3%, so they have thought ahead and designed the car accordingly

You call that a battery? This is a battery:

But its range and passenger capacity is extremely poor for the purposes of transportation

Those are the one’s that are supposed to go BOOM! :slight_smile:

Already under discussion is the secondary market for used batteries, much as we reuse laptop and power pack pull only for aftermarket power wall use where capacity is less of an issue.

That’s going to be awesome. And I read that recycling can claim back virtually all the lithium. nice.

I agree this will be a big benefit when we better utilize the full potential of lithium batteries from manufacture to recycle.

> aftermarket power wall use
Once they figure out how to keep them from exploding.
For sure, next time.
Absolutely, positively, not boom.

Meanwhile, there’s room for improvement in fire fighting protection suits …

I posted today a video of the new Samsung Note 7 battery shown to catch fire with with small punctures made to the battery. There needs to better training and products available for extinguishing lithium battery firers.