Tesla battery researchers showed updated test results pointing to batteries equivalent to 2 million miles (million. Million million km) in more than 15,000 cycles or electric cars.
Last year, we reported to Jeff Dan and his lab, who are under contract to do battery research for Tefla, releasing an interesting paper showing the latest Li-ion battery technology, how it travels 1 million miles in electric vehicles.
In the new release, Dahn discusses the updated test results of this new battery, which he hopes will become the new standard Li-ion battery benchmarking new battery technologies.
The scientist, who is widely known as a pioneer in Li-ion batteries, referred to our article last year about his paper and said that this new battery aroused great interest in chemistry and battery life.
They continue to test batteries, some with 3 years of testing and more than 10,000 cycles:
Dahn has now concluded that these batteries in mid-range electric cars will travel 3.5 million kilometers or more than 20 million miles.
He also showed results based on different depressions of discharge, which means what percentage they charge before recharging the battery, and shows that Li-ion batteries are performing very well after 15,000 cycles so far:
Most impressively, batteries show very little of any capacity degradation when discharged between 25% and 50% of their capacity, which is how most people use their cars.
On average, American drivers use their vehicles for less than 30 miles a day.
For example, with this battery in a Tesla vehicle with a range of 400 miles, you can use it to travel miles0 miles a day, and charging results in, on average, between 0% and 0% per day, greatly reducing battery degradation.
Considering that this would mean that the battery lasts virtually forever or may be longer than the actual useful life of the car, Dahan raises a question: do we really need a battery that is good?
Tesla CEO Elon Musk says they have a battery that will run more than 10 million miles for the “robotoxis” of the consumer tomer, which has a higher utilization rate than consumer vehicles.
Kasturi has also said in the past how long-lasting batteries are crucial for Tesla’s other programs, such as PowerVals, PowerPacks and Tesla Semi-Electric Trucks.
Dahn also brought that this new super long-lasting battery could be useful for enabling vehicle-to-grid features.
In the past, Tesla owners have been able to use batteries inside their cars to dissipate energy in the grid, due to the impact on battery longevity, but this new battery will fix those issues.
Interestingly, one of Tesla’s top engineering leaders, Drew Baglino, recently said that future Tesla vehicles will have two-way chargers to enable vehicle-to-grid or vehicle-to-everything technologies.
Dahn brought some other interesting potential uses of the battery with a very long lifespan and briefly commented on Tesla’s ‘Battery Day’ in the presentation:
“Tesla is moving at the speed of light. They are up-scaling their factory. They know they will need terawatt-battery batteries for both energy storage and vehicles. It’s an incredibly exciting time. ”
Here is Jeff Dahn’s new release:
Take the electric
Very interesting and impressive new test results here.
That’s especially interesting because Tesla talked a lot during the Battery Day presentation.
It focused primarily on cost and scale, but Tesla has been guiding for a while now that they are making great improvements in longevity and many of those improvements seem to be coming from Jeff Dahn’s lab.
Older Tesla vehicles have already shown limited battery reduction and in general, batteries in Tesla vehicles already seem to hold up very well, but it is interesting to think that in the near future, life may be so great that it enables new features and variations. Is. Use case.
As always, Jeff Dahn isn’t announcing when Tefla will implement these changes, but now that the company is building its own cells, I wouldn’t be surprised if some crazy longevity is shown in the Tesla 4680 cells.
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