1 Million mile EV battery

The upcoming battery should be very exciting.

Elon said, "Battery day is going to be one of the most exciting day in the history of Tesla".

This current article highlights the improvements in next-gen cathode materials that are likely to be used in stationary products such as Powerwall and Grid storage.

electrek.co

Tesla improves on its 'million-mile battery' with less cobalt and higher energy density

Tesla has made even more battery improvements on its new ‘million-mile battery’ now with less cobalt, which could result in...
electrek.co electrek.co
 
Ravi Kempaiah said:
Canadian contribution to the EV world.

www.reuters.com

How Tesla tapped a tiny Canadian lab for battery breakthroughs

Tesla Inc <TSLA.O> is a leader in electric vehicle battery technology, but the company doesn't do all its own research.
www.reuters.com www.reuters.com
Click to expand...

Thanks for sharing the article... looks like the first practical application may be produced in Tesla's new China plant.

electrek.co

Tesla's secret Roadrunner project: new battery production at $100 per kWh on a massive scale

Electrek has learned more about Tesla’s secret project “Roadrunner”: applying “the machine that builds the machine” strategy to produce cheaper...
electrek.co electrek.co

electrek.co

Tesla will launch its new battery in China first and partner with CATL to make them, report says

According to a new report, Tesla will launch its new million-mile battery cell in China first, and it will partner...
electrek.co electrek.co

According to a new report, Tesla will launch its new million-mile battery cell in China first, and it will partner with CATL to make them. Electrek previously revealed that Tesla is working on an internal secret Roadrunner project. The goal is for Tesla to produce its own battery cells using technologies developed by Tesla’s internal teams, including work from Jeff Dahn’s team in Canada, and new technologies recently acquired through the acquisition of Maxwell, on a massive scale and at a cost below $100 per kWh.

Recently, we reported Tesla has been applying for a lot of intellectual property related to battery cells, like a new electrode for its 1-million-mile battery. In a new report, Reuters claims to have new details about the plan for Tesla’s new battery: Electric car maker Tesla Inc plans to introduce a new low-cost, long-life battery in its Model 3 sedan in China later this year or early next that it expects will bring the cost of electric vehicles in line with gasoline models, and allow EV batteries to have second and third lives in the electric power grid.
 
News that Tesla has delayed it's planned Battery Day... with a 2Q webcast and live event in 3Q.

electrek.co

Elon Musk delays Tesla 'Battery Day' to next month

Elon Musk is again delaying Tesla’s upcoming ‘Battery Day’ and says that the automaker might do the presentation in two...
electrek.co electrek.co

As we previously reported, Electrek revealed that Tesla will present the result of its internal secret Roadrunner project at the battery event.

The goal is for Tesla to produce its own battery cells using technologies developed by Tesla’s internal teams, including work from its research lab in Canada led by Jeff Dahn, and new technologies recently acquired through the acquisition of Maxwell, on a massive scale and at a cost below $100 per kWh. A plan to mass-produce the cells at several locations is also expected to be part of the announcement.

Now Musk said on Twitter last night that they are pushing the date and suggested that it even might be in two parts:

“We’re going to have to push out the date or attendance will be very low. Maybe do in two parts: webcast next month & in-person event a few months later?”
If Tesla goes through with this plan, there would be a live cast in June and a live event during the third quarter.
 
Last edited:
Here is another update from Electrek.

electrek.co

Tesla to get new million-mile battery ready for production at CATL

CATL announced that it is ready to produce the new million-mile battery and Tesla’s Model 3 made at Gigafactory Shanghai...
electrek.co electrek.co

"CATL announced that it is ready to produce the new million-mile battery and Tesla’s Model 3 made at Gigafactory Shanghai is reportedly going to be first to get the new battery.Electrek previously revealed that Tesla is working on an internal secret Roadrunner project. The goal is for Tesla to produce its own battery cells using technologies developed by Tesla’s internal teams, including work from Jeff Dahn’s team in Canada, and new technologies recently acquired through the acquisition of Maxwell, on a massive scale and at a cost below $100 per kWh.

Recently, we reported Tesla has been applying for a lot of intellectual property related to battery cells, like a new electrode for its 1-million-mile battery. Tesla plans to produce this new million-mile battery itself, but it apparently also plans to have production partners. Last month, Reuters reported that Tesla is working with CATL to produce a million-mile battery cell in China and that it will first be used in the Model 3 vehicles produced at Gigafactory Shanghai. Now Bloomberg is out with a similar report corroborating some Reuters’ previous claims.
 
So, the battery will last longer than the car; will they allow you to buy new cars in the future and use the battery from your existing car?
 
CityExplorer said:
So, the battery will last longer than the car; will they allow you to buy new cars in the future and use the battery from your existing car?
Click to expand...

In the future, you'll be able to power your home and utilities using your electric car. So, while one may not drive a million miles, the extraordinary cycle life of this battery will help power homes and reduce the grid load. Coal powered plants (peaker plants) pollute a lot and if we can reduce the load on the grid during peak hours by using electricity from the car, it makes a huge difference. A step in right direction for the future.
 
you could, but... your car will be dead in the morning unless you only need to go 5 miles, and the existing cars will need some electrical upgrades to do that.

This sounds like mostly marketing. More range, is what we (I) need right now.
 
CityExplorer said:
your car will be dead in the morning unless you only need to go 5 miles
Click to expand...

May I know what electric car you have?
On some of the newer generation cars, you could program how much charge you would like to have in the morning before you leave. It can be done using your phone app with a few taps.
The Tesla Powerwall has features that will optimize the discharge based on your electricity rates, solar capture for that particular day, daily usage pattern etc.

CityExplorer said:
This sounds like mostly marketing. More range, is what we (I) need right now.
Click to expand...

Thanks for your opinion.

Tesla Model S has 400 miles of range and it recharge to about 80% in 45 mins.
Regarding marketing :
Tesla was at $230 exactly an year ago and today it is at $1485. I guess thousands of large investment firms bought into this marketing :rolleyes:




1596677614661.png
 
Ravi Kempaiah said:
In the future, you'll be able to power your home and utilities using your electric car. So, while one may not drive a million miles, the extraordinary cycle life of this battery will help power homes and reduce the grid load.

Coal powered plants (peaker plants) pollute a lot and if we can reduce the load on the grid during peak hours by using electricity from the car, it makes a huge difference. A step in right direction for the future.
Click to expand...

Full disclosure... I am a long term Tesla investor, shareholder, and owner. 😉

That said, I am very interested that Tesla is working on Vehicle to Grid, V2G technology.

electrek.co

Tesla quietly adds bidirectional charging capability for game-changing new features [Updated]

Electrek has learned that Tesla has quietly made Model 3, and likely Model Y, ready for bidirectional charging, which should...
electrek.co electrek.co
 
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More speculation on the new tech announcement for Tesla Battery day... September 22nd. ;)

electrek.co

Tesla teases nanowire technology in Battery Day announcement

Tesla is teasing some sort of nanotechnology in a new Battery Day announcement ahead of the presentation next month. The...
electrek.co electrek.co
One of the main companies developing the technology is Amprius:
“Developed on a patented technology platform that includes a 100% silicon nanowire anode, Amprius Technologies batteries provide significantly more energy and power with less weight and volume than any other lithium-ion battery technology. Amprius Technologies batteries provide up to 50% higher energy density than standard lithium ion batteries with carbon anodes”
Click to expand...
Interestingly, Amprius is based right next to Tesla’s 901 Page Ave. building in Fremont, California. That building is actually where Tesla plans to hold battery day and it is also home to Tesla’s “Tera battery manufacturing facility” using the company’s Roadrunner battery manufacturing process. There’s no other clear link between Tesla and Amprius, but we found out that Tesla hired Yi-Lei Chow last year from Amprius where he had been a long-time engineering and manufacturing leader. Tesla will hold its Battery Day on September 22.

That would be an interesting turn of events. We know that Tesla is planning to announce its own plan for large-scale battery manufacturing of its own cells. We also know that Tesla plans to announce some updated battery chemistry, but the extent of the improvements Tesla plans to announce is unclear. If it would be a new battery based on the Amprius technology, it could potentially mean a massive improvement:
energy-density-comparison-02-1.jpg
 
FlatSix911 said:
More speculation on the new tech announcement for Tesla Battery day
Click to expand...

I know Fred and he has helped write several articles based on the research coming out of Canada but I have to respectfully disagree with the author.
Amprius technology is not suitable for large scale EVs. They are currently used in high-capacity, low-cycle life applications like the drones.
 
Ravi Kempaiah said:
I know Fred and he has helped write several articles based on the research coming out of Canada but I have to respectfully disagree with the author.
Amprius technology is not suitable for large scale EVs. They are currently used in high-capacity, low-cycle life applications like the drones.
Click to expand...

Good to know... does Fred have a STEM background?
 
Ravi Kempaiah said:
In the future, you'll be able to power your home and utilities using your electric car. So, while one may not drive a million miles, the extraordinary cycle life of this battery will help power homes and reduce the grid load. Coal powered plants (peaker plants) pollute a lot and if we can reduce the load on the grid during peak hours by using electricity from the car, it makes a huge difference. A step in right direction for the future.
Click to expand...
What are the transmission losses from storing and releasing energy? Eg if you use 100 kwh to fill a Tesla battery, how much does the Tesla have and how much would you get out if you drained it?
 
Asher said:
What are the transmission losses from storing and releasing energy? Eg if you use 100 kwh to fill a Tesla battery, how much does the Tesla have and how much would you get out if you drained it?
Click to expand...

Charging efficiency is about ~80%.
Some folks claims as high as 90% and few other claim 70% but average is about 80% considering some of the losses you mentioned. (I^2R, wiring etc)
So, if you use 100kWr to charge, your car will hold 80 kWhr.

Batteries are exceptionally efficient. Their Coulombic efficiency is 99.9% or more. Tesla's million mile battery has something like 99.995% efficiency at room temperature.
So, 100kWhr from the grid gets converted to 80 kWhr at the vehicle level and when you discharge it (or drive your car around), you get 80kWhr back for usage. Then you have some losses in the motor and wiring but that's negligible compared to the losses in a gasoline car.

It is for this reason, gasoline vehicles can't compete when it comes to efficiency. Even the best internal combustion engine is only 35% and they do have other losses as well. Whereas the worst electric motor is 80% efficient. The motors used in Tesla/Chevy Bolt etc are >90% efficient.


1598295376450.png


Source of this image: https://www.nature.com/articles/s41560-020-0648-z
 
So, why would E. Musk tweet a pic of nanowire lines regarding battery improvements ? They must have a strong ACE in their cards and will pull it off on 09/22/20

Actually he said that is doable a 400wh/kg rate for electric planes in 3-4years . A model 3 has 260wh/kg capacity,21700 cells.
 
FlatSix911 said:
Good to know... does Fred have a STEM background?
Click to expand...

I am not sure but he is very passionate and he spent few months early this year shooting a sequel to the movie "Who killed the electric car".
Recently, there has been a lot of talk about Vertical Take-off and Landing (VTOL) vehicles and the battery needed to make that happen.

https://twitter.com/i/web/status/1298017332904620033

Coincidentally, Jeff's team in Halifax published this breakthrough paper highlighting next-gen batteries that could enable electric airplanes.

electrek.co

Tesla battery researchers mention enabling electric aircraft with new batteries

Tesla battery researchers are pointing to enabling electric aircraft with new next-generation battery cells. Yesterday, we reported on Tesla’s battery...
electrek.co electrek.co

And the actual research paper: https://www.nature.com/articles/s41560-020-0668-8

Another news article:

observer.com

A Tesla Electric Plane? Elon Musk Hints It’s Not Far Away

Tesla will be able to produce an “aircraft-grade” battery in three or four years, Musk said.
observer.com observer.com
 
FlatSix911 said:
Interestingly, Amprius is based right next to Tesla’s 901 Page Ave. building in Fremont, California. That building is actually where Tesla plans to hold battery day and it is also home to Tesla’s “Tera battery manufacturing facility” using the company’s Roadrunner battery manufacturing process. There’s no other clear link between Tesla and Amprius, but we found out that Tesla hired Yi-Lei Chow last year from Amprius where he had been a long-time engineering and manufacturing leader. Tesla will hold its Battery Day on September 22.
Click to expand...

Now, Elon himself confirms --> no nanowire news in the upcoming battery day announcement.

https://twitter.com/i/web/status/1298869205853515776

https://twitter.com/i/web/status/1298874856210149376
 
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