Is there a thread that summarizes/tracks everything we've been told by EM/JB/other primary sources? If not, let's start one here.
You can install our site as a web app on your iOS device by utilizing the Add to Home Screen feature in Safari. Please see this thread for more details on this.
Note: This feature may not be available in some browsers.
but Elon doesn't have total control of the design
Elon has bactracked off the Model 3 will be unlike any other car on the road to Tesla is leaning toward a less "adventurous design."
Some news today:
http://insideevs.com/analyst-note-new-details-on-tesla-model-3/
“The official unveiling will be March 31, 2016, in Hawthorn, California, and according to recent research Chowdhry gathered after attending numerous Deep Learning Hackathons, the Autonomous Driving Symposium, the Material Science Symposium and the Battery Technology Summit, production and deliveries for the Model 3 are likely to be on schedule.”
“Chowdhry explained two elements of the Model 3 that are unique and support the timeline for vehicle delivery by 2017: The vehicle architecture and composition.”
“Vehicle Architecture: Chowdhry stated that the Model 3 will have “completely different vehicle architecture – both the chassis and the battery chemistry – hence will have different power density and energy density trade off.”
“Vehicle Composition: Unlike the Model X and Model S, the Model 3 body and chassis will be completely built of steel as opposed to aluminum. Chowdhry highlighted the key advantages of steel over aluminum as being the lower production equipment costs, the lower worker training/skill needed to work/operate steel, the lower compensation and cost savings of steel workers versus aluminum workers, and the lower repair costs.”
Thanks for this!
Now, would you or anyone else be able to explain in layman's terms what the "different power density and energy density trade off" might mean, practically, to someone who wants a Model 3 and has driven a Model S?
I will add this but however that seems to be missing in discussions about Model 3: given the car will be smaller than a Model S, Tesla has stated the cells will be a bit bigger than the 18650s in use currently (think 20700). On the order of 10% bigger in volume which should result in about a 33% increase in storage density. This slightly larger cell will make up for the smaller pack that has to go into the car so as to offer similar battery capacities offered on the Model S. It's the massive economies of scale with this new format made in the US for the same if not less than an 18650 which is the magic sauce.
Thanks for this!
Now, would you or anyone else be able to explain in layman's terms what the "different power density and energy density trade off" might mean, practically, to someone who wants a Model 3 and has driven a Model S?
Quick hi-jack if I may,
Complete battery tech newb here... Can you explain to me (perhaps like I'm 5 as the internet loves to do) why if increasing them 10% in size yields a 33% density increase (or just a generic X% size increase yields y% density increase), why dont they increase them in size by more than that? Obviously there is a reason, or many, I'm just not educated enough to know it. Why dont they double the size of the cell?
As Trev mentioned, he is commenting on the new battery format. That format allows for maximizing the power and energy density. The new format also saves in cost. Altogether, it allows for a minimum of 30% increase in density over the original Model S batteries while reducing cost by 30% as well. We have heard that the chemistry and format can be up to 50% better. I only heard that once from Elon. I wouldn't count on it.
Some news today:
http://insideevs.com/analyst-note-new-details-on-tesla-model-3/
“The official unveiling will be March 31, 2016, in Hawthorn, California, and according to recent research Chowdhry gathered after attending numerous Deep Learning Hackathons, the Autonomous Driving Symposium, the Material Science Symposium and the Battery Technology Summit, production and deliveries for the Model 3 are likely to be on schedule.”
“Chowdhry explained two elements of the Model 3 that are unique and support the timeline for vehicle delivery by 2017: The vehicle architecture and composition.”
“Vehicle Architecture: Chowdhry stated that the Model 3 will have “completely different vehicle architecture – both the chassis and the battery chemistry – hence will have different power density and energy density trade off.”
“Vehicle Composition: Unlike the Model X and Model S, the Model 3 body and chassis will be completely built of steel as opposed to aluminum. Chowdhry highlighted the key advantages of steel over aluminum as being the lower production equipment costs, the lower worker training/skill needed to work/operate steel, the lower compensation and cost savings of steel workers versus aluminum workers, and the lower repair costs.”
Any information given by Trip Chowdhry is not real information.