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Tesla patent points to battery cell improvements with clever deformation detection process

Tesla's 2170 battery cells. (Credit: Tesla)

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A recent patent published late August has revealed that Tesla is working on a monitoring system and apparatus that will allow the electric car maker to detect deformations in battery cells in a more effective manner. 

Tesla’s patent application, titled “Apparatus and Method for Detection of Deformation in Battery Cells,” notes that battery cycle life is among the most crucial parameters to ensure optimal performance in machines such as electric vehicles and energy storage devices. Over the course of their lifetime, battery cells will be subjected to multiple charge and discharge cycles, at times in vastly varying conditions and environments.  

As noted by the company in its patent application, there are instances when cells operate in an environment where the ambient temperature may intermittently surge to levels above the stable thermal temperature for normal operations. Cells could also be subjected to high charge and discharge rates and large periodic loads, which could result in significant heating, among other reactions. 

Subjected to these factors, battery cells could experience several effects, such as the thickening of electrodes or the volume expansion of electrochemically active materials within the cell itself. These expansions could ultimately result in cells experiencing deformation, which could, in turn, result in both reversible and irreversible mechanical strain, as well as the potential degradation of the battery’s electrodes. 

An illustration depicting Tesla’s apparatus and method for detecting deformations in battery cells. (Credit: US Patent Office)

These battery cell deformations are traditionally monitored using strain gauges or optical gauges that exclusively detect and evaluate deformations at single points in a cell. Tesla noted that this system has space for improvements, since optical evaluations might not provide the correct status of deformation across the entire surface of a battery. This could result in strain and deformation measurements that are inaccurate. 

With these factors in mind, Tesla has come up with a deformation detection apparatus that enables the contactless detection of deformations and/or swelling of the battery across the entire surface of the cell itself. Tesla describes the deformation detection apparatus as follows. 

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“A deformation detection apparatus includes a cell movement-control assembly to handle a linear motion and a rotational motion of a battery cell, a body that supports the cell movement-control assembly, a digital micrometer, and control circuitry. The control circuitry controls a displacement of the battery cell between a first position and a second position along a longitudinal axis through a scanning region of the digital micrometer and a plurality of rotational positions of the battery cell at a plurality of charge states and a plurality of discharge states. The control circuitry measures a plurality of outer diameter values of the battery cell for a plurality of linear positions and a plurality of rotational positions along the longitudinal axis of the battery cell and determines a change in a geometrical shape (deformation and/or strain) of the battery cell for the plurality of linear positions and the plurality of rotational positions.”

An illustration depicting Tesla’s apparatus and method for detecting deformations in battery cells. (Credit: US Patent Office)

According to the electric car maker, the battery cell deformation monitoring process outlined in its patent will provide advantages over traditional monitoring methods. 

“The disclosed apparatus, such as the apparatus 100 and method of determination of deformations in the battery cell 112 advantageously provides a contactless solution for deformation detection in the battery cells, as compared to conventional contact-based solutions. Further, instead of measuring the plurality of outer diameter values/strain values at a specific point in time, the disclosed apparatus 100 advantageously facilitates measurement of the plurality of outer diameter values/strain values at a plurality of points on the battery cell 112. The apparatus 100 enables detection of localized/non-localized deformation regions on the battery cell 112, which may exhibit signs of deformation at different charge/discharge states at different points in time.”

Tesla’s recently published patent application for its new battery cell deformation detection apparatus could be accessed in full here

The implications of Tesla’s recent patent are notable. By adopting its deformation detection system, the company would be able to evaluate the quality of its cells and their operating limits more effectively. This could open the doors to improvements in the company’s batteries, which could, in turn, result in even more range and performance for Tesla’s electric vehicles. 

Tesla holds a notable lead among automakers in terms of battery technology, as exhibited by the company’s electric vehicles’ vastly superior range compared to the competition. This is represented by Tesla’s recent “Raven” update to the 100 kWh Model X, which allowed the SUV to travel 325 miles in one charge. This is notably impressive, considering that the Audi e-tron, a smaller, lighter vehicle equipped with a 95 kWh battery pack (5% smaller than the Model X), is only EPA-rated for 204 miles per charge (38% less range than Tesla’s larger, heavier vehicle). A report from German business newspaper Wirtschaftswoche has also determined that Tesla’s batteries for the Model 3 have over four times less cobalt compared to the batteries utilized by Volkswagen today.

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Simon is an experienced automotive reporter with a passion for electric cars and clean energy. Fascinated by the world envisioned by Elon Musk, he hopes to make it to Mars (at least as a tourist) someday. For stories or tips--or even to just say a simple hello--send a message to his email, simon@teslarati.com or his handle on X, @ResidentSponge.

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Elon Musk to file lawsuit against former US Rep Jamaal Bowman: “I’ve had enough”

Bowman called the Tesla CEO a “Nazi” and a “thief” during a segment on CNN.

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MINISTÉRIO DAS COMUNICAÇÕES, CC BY 2.0 , via Wikimedia Commons

Elon Musk has announced that he is filing a lawsuit against former United States Representative Jamaal Bowman over his recent comments in a CNN segment.

Musk shared his legal intentions in a post on social media platform X.

Bowman’s Comments

During an appearance on CNN, Bowman, who made news in 2023 by triggering a fire alarm while Congress was in session, strongly criticized Elon Musk. Unlike other Musk critics, Bowman went straight for the jugular, calling the CEO a “Nazi” and a “thief.” Bowman’s comments received polarizing reactions in social media, with some users stating that such words could be used to sue for defamation.

“The American people do not trust Elon Musk. And Elon Musk is incompetent in his position. And how do we know? Because they fired tens of thousands of people, it was challenged in court, the court said people have to go back, and now the people are coming back. He’s incompetent, he’s a thief, he’s a Nazi, and people don’t trust him,” Bowman said.

“I’ve Had Enough”

In a comment to a video of Bowman’s CNN segment that was shared on X, Musk stated that the former Democratic Congressman’s words have crossed a line. “I’ve had enough. Lawsuit inbound,” Musk wrote in a post on X. Musk’s post received some support from X users, several of whom noted that it’s high time the CEO fought back against the vitriol that is consistently thrown his way.

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Musk has been on the receiving end of protests from critics who oppose his work with U.S. President Donald Trump and the Department of Government Efficiency (DOGE). Opposition against Musk has spilled over to Tesla, resulting in stores being shot, firebombed by Molotov cocktails, vandalized, and vehicles and Superchargers being subjected to arson. Even regular Tesla owners have reported a growing wave of vandalism incidents.

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Tesla aiming to produce first “legion” of Optimus robots this 2025

Tesla is aiming to start the production of Optimus this year, and its first run will be no joke.

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Credit: Tesla

Tesla’s Q1 2025 All-Hands meeting saw CEO Elon Musk share a key update about the company’s most ambitious product yet — Optimus. As per Musk, Tesla is aiming to start the production of Optimus this year, and its first run will be no joke. 

Tesla Optimus’ Quick Evolution

Tesla initially announced Optimus during its AI Day event in 2021. At the time, Tesla only had a mockup of the robot and a literal person in a suit to demonstrate what Optimus could look like. By 2022, Tesla had a working prototype of the robot. Optimus’ progress has been rapid since then, with several dozens of the humanoid robots interacting with attendees at the Cybercab’s unveiling last October.

Optimus’ Potential

During the recent All-Hands meeting, Elon Musk reiterated the idea that Optimus could very well be the biggest product of all time, likely being ten times larger than the next-biggest product. Musk also shared an update about Optimus’ production, stating that the first humanoid robot has been manufactured at the Fremont Factory.

A Legion for 2025

When discussing Optimus’ ramp, Musk clarified that Tesla is internally aiming for enough parts to produce 10,000 to 12,000 Optimus robots this year. However, since Optimus is a completely different product, even half of 10,000 units would be a huge victory for Tesla. Tesla also plans to ramp Optimus to a notable degree in 2026, with the company aiming for 50,000 units, or 10 “legions” of humanoid robots, next year.

“So this year, we hopefully will be able to make about 5,000 Optimus robots.  We’re technically aiming for enough parts to make 10,000, maybe 12,000, but since it’s a totally new product with a totally new, like everything is totally new, I’ll say we’re succeeding if we get to half go the 10,000.

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“But even 5,000 robots, that’s the size of a Roman legion, FYI, which is like a little scary thought. Like a whole legion of robots, I’ll be like ‘whoa.’ But I think we will literally build a legion, at least one legion of robots this year, and then probably 10 legions next year. I think it’s kind of a cool unit, you know? Units of legion. So probably 50,000-ish next year,” Musk said.

Tesla’s Q1 2025 All-Hands Meeting can be viewed below.

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Tesla Shanghai Megafactory starts exporting Megapacks, first to Australia

Tesla Asia celebrated the Shanghai Megafactory’s first Megapack exports on X.

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Credit: Tesla Asia/X

Tesla has begun exporting Megapack battery systems from its Shanghai Megafactory, with the first shipment departing for Australia on Friday. This marks a key step in Tesla Energy’s expansion into the global energy storage industry, utilizing its new China-based Megafactory to supply several new markets.

Tesla Asia celebrated the Shanghai Megafactory’s first Megapack exports through its official social media account on X.

Tesla Megapacks in Focus

The Tesla Megapack is capable of storing 3.9 MWh of energy, and they are designed for grid use. As per Tesla in its official website, each Megapack battery has enough energy to power an average of 3,600 homes for one hour. The Megapack is designed to be infinitely scalable as well, making it a good fit for large-scale sustainable energy projects.

The Shanghai Megafactory

The Shanghai Megafactory began production in early 2025, a record eight months after its May 2024 groundbreaking. With an initial output of 10,000 units annually, equal to about 40 GWh, the Shanghai Megafactory has the potential to significantly boost Tesla’s battery storage deployments.

As per a report from Xinhua News Agency, Tesla is expecting its energy deployments to rise 50% year-over-year this 2025.

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Tesla Leaders on the Shanghai Megafactory

Mike Snyder, vice president of energy and charging at Tesla, previously outlined the potential of the Shanghai Megafactory. “Megafactory gives us the ability to scale production and efficiency. We can lower logistics costs as well as product costs, and grow the business to new markets,” he stated. 

The Shanghai Megafactory also seems to be part of Tesla’s efforts to grow its presence in China, which was highlighted by CEO Elon Musk during a meeting with Chinese Premier Li Qiang. During their meeting, Musk reportedly stated that “Tesla is willing to deepen cooperation with China and achieve more win-win results.”

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