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Rivian patent application hints at 900V fast charging capabilities

The Rivian R1T. | Image: Dacia J. Ferris/Teslarati

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7 years ago

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A recently published Rivian patent application titled “Configurable Battery Pack for Fast Charge” describes a method of switching between battery pack connection types to allow for both 450V and 900V fast charging without the need for specialized components. The invention was filed in both the US and internationally, and both applications just published today as US Patent Publication No. 2019/0126761 A1 and International Publication No. WO/2019/084507 A1.

Rivian’s application sets out to solve three specific issues with electric vehicle battery charging. First, increases in charging rates typically require more expensive parts that are rated for the higher current requirements. Second, electronic devices operated while a battery is charging may be impacted via increased voltage when a battery’s charging rate is increased. Finally, when a fault occurs in a battery module, a battery system often needs to be completely disconnected from any loads or the charging voltage must be changed.

The basic concept of the application purports to solve the above-referenced problems. As described, the invention claims that battery modules connected in parallel achieve a targeted maximum high voltage for an electric load (such as 450V), but when connected in series that voltage can be doubled (900V). Details of why this is advantageous are explained in the application as follows:

“A configurable battery system allows the techniques of [this invention] to be applied to an electric vehicle…to more fully utilize a battery charger’s potential [where] it is desirable to achieve a particular charging target. For example, a charging target of 150 kW at 450 V may require a current of 334 A…[and] components may need to be sourced to handle up to 400 A continuously to handle the charging….If a battery system were able to take advantage of charging at 900 V, the charging target of 150 kW could be achieved at just 167 A, which may allow for more numerous, better quality, or cheaper options for charging components. For example, a current of 167 A may allow different hardware to be used than if the current were nearer to 400 A.“

The application also includes a battery management system to determine which connection should be used at a given point and switch the connection type accordingly. This same management system is also used to detect faults in the system while charging and use the switching capability to handle them accordingly rather than disconnecting any battery loads.

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The US application for this invention was filed June 8, 2018 and thus has not yet been examined. However, in the international version, an examiner has already searched for related inventions based on the first 10 claims of Rivian’s application. These claims only describe “a configurable battery system in which connection of two batteries can be switched between a series and a parallel connection”, which is not considered novel on its own.

This kind of finding is not uncommon for applications undergoing the international filing process and will be further addressed once filed in specific countries. Three other inventions were determined to be present in the application which will likely be incorporated with the first ten as the invention’s proceedings continue.

Rivian Battery Lab Pack Assembly | Image: Rivian

Rivian aims to be the leading expert on battery technology, and patent applications such as this one are a nod towards that innovation goal. The Michigan-based all-electric car maker runs a battery lab in Irvine, California where it has picked up several engineers from renowned supercar brand McLaren. This talent pool includes hypercar engineer Richard Farquhar who is their VP of Propulsion, leading Rivian’s battery and powertrain development.

Currently, each Rivian battery module holds 864 cells, stacked evenly on top of one another, with a thin 7mm aluminum plate with liquid coolant in between. In addition to connection testing, the company uses machine learning to adjust battery cell settings to build predictive models and tune the cells based on situations that may be encountered, such as weather conditions.

Altogether, Rivian’s aim to achieve a level of battery technology that’s reliable and optimal for the electric outdoor adventure branding it has embraced looks to be moving in a promising direction.

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Accidental computer geek, fascinated by most history and the multiplanetary future on its way. Quite keen on the democratization of space. | It's pronounced day-sha, but I answer to almost any variation thereof.

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Tesla begins production of new Model Y trim at Giga Berlin

Tesla announced on Monday that its Model Y Standard configuration was officially being built at Giga Berlin, less than one month after the company officially announced the configuration early last month.

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1 hour ago

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November 4, 2025

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Credit: Tesla

Tesla has begun production of the new Model Y trim at Gigafactory Berlin, the company’s production plant in Germany.

Tesla announced on Monday that its Model Y Standard configuration was officially being built at Giga Berlin, less than one month after the company officially announced the configuration early last month.

On October 7, Tesla announced the launch of the Model 3 and Model Y Standard trim levels, its answer to the call for affordable EVs within its lineup and its response to the loss of the $7,500 electric vehicle tax credit.

On October 3, Tesla started production of the vehicles in Germany:

The Standard iteration of the Model Y is void of many of the more premium features that are available in the Rear-Wheel-Drive, All-Wheel-Drive, and Performance trims of the vehicle are equipped with.

A few of the features of the Model Y Standard are:

  • Single Motor configuration
  • No rear touchscreen
  • Textile seats with vegan leather, instead of all vegan leather
  • 320-mile range
  • No glass roof

The launch of the Model Y Standard was truly a move to help Tesla get vehicles into the sub-$40,000 price point, and although many consumers were hoping to see the company get closer to $30,000 with these cars, this is a great starting point.

Deliveries in the United States have already started, and it seems it will be a vehicle that will do one of two things: either push some consumers to finally make the jump to Tesla, or it will give car buyers another reason to buy the Premium trims, as they may feel the lack of features is not a good enough deal.

This is something we saw with the Cybertruck’s Rear-Wheel-Drive configuration, which launched last year and ended up being more of the latter option listed above.

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The Tesla Model Y Standard is actually a great deal in Europe

It was only a $10,000 discount from the All-Wheel-Drive Cybertruck, but it also did not have adaptive air suspension, premium interiors, or the powered tonneau cover, which many people felt was too much of a sacrifice.

The Rear-Wheel-Drive Cybertruck was discontinued only a few months later.

It does not seem as if this is the case with the Model Y Standard, which already seems to be an attractive option to some buyers.

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Tesla begins wide rollout of Full Self-Driving v14 to Cybertruck

Published

16 hours ago

on

November 3, 2025

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Credit: Weibo (via YYDS on X)

Tesla has officially begun the wide rollout of Full Self-Driving (Supervised) v14 to the Cybertruck about a month after the company started rolling it out to other vehicles in the fleet.

On Monday, Tesla officially started rolling out v14.1.5 to Cybertruck owners, the first FSD v14 rollout for owners of the all-electric pickup.

Owners have been anxiously waiting for Tesla to begin the wide release of v14 to Cybertruck, as the company said it would refine the suite for the vehicle.

Tesla has finally started rolling out to many owners, who are reporting that their Cybertrucks are downloading Software Update 2025.38.8.5, which contains FSD v14.1.5:

Tesla has to be more cautious with rolling out FSD on the Cybertruck than on other vehicles for a few reasons. Initially, the Cybertruck utilizes an all-wheel steering system that turns differently than the S3XY lineup. This creates a challenge for the Tesla AI team as they have to cater to this specific maneuvering change.

Additionally, the Cybertruck is much larger, and the exterior cameras responsible for seeing the vehicle’s surroundings are placed differently than those of the other vehicles.

This requires additional calibration to ensure safety.

The full release notes for Full Self-Driving v14.1.5 are as follows:

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  • Added Arrival Options for you to select where FSD should park: in a Parking Lot, on the Street, in a Driveway, in a Parking Garage, or at the Curbside.
  • Added handling to pull over or yield for emergency vehicles (e.g. police cars, fire trucks, ambulances).
  • Added navigation and routing into the vision-based neural network for real-time handling of blocked roads and detours.
  • Added additional Speed Profile to further customize driving style preference.
  • Improved handling for static and dynamic gates.
  • Improved offsetting for road debris (e.g. tires, tree branches, boxes).
  • Improve handling of several scenarios including: unprotected turns, lane changes, vehicle cut-ins, and school buses.
  • Improved FSD’s ability to manage system faults and recover smoothly from degraded operation for enhanced reliability.
  • Added alerting for residue build-up on interior windshield that may impact front camera visibility. If affected, visit Service for cleaning!

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Elon Musk shuts down Tesla ‘AMG’ division speculation: ‘Focus is autonomy’

“I think it’s best to leave that to the custom shops. Tesla’s focus is autonomous cars, building futuristic autonomous cars. We want the future to look like the future.”

Published

18 hours ago

on

November 3, 2025

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Credit: Unplugged Performance

Tesla CEO Elon Musk was asked by Joe Rogan late last week whether the company would ever consider establishing an “AMG division” like Mercedes-Benz has established for powerful, race-inspired vehicles.

However, Musk turned down any talk of that, highlighting that the company is laser-focused on autonomous vehicles, seemingly hinting that any distraction from autonomy would be a detriment to the future.

Rogan drives a Tesla Model S himself, but it is not your run-of-the-mill all-electric sedan. Already outfitted with the Plaid powertrain that Tesla developed, Rogan took his vehicle to Unplugged Performance for a true performance outfitting.

The vehicle is completely overhauled with performance parts and seats. Known as the Model S-APEX, Rogan took delivery of it from Unplugged in January.

Rogan asked Musk on Friday during his most recent appearance on the Joe Rogan Experience podcast whether Tesla would ever establish an “AMG division” that would focus on catering Teslas to performance-based standards.

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Musk said:

“I think it’s best to leave that to the custom shops. Tesla’s focus is autonomous cars, building futuristic autonomous cars. We want the future to look like the future.”

Tesla fans have said for years that the company should consider acquiring Unplugged Performance and its Upfit Tesla division, which recently outfitted the Las Vegas Metropolitan Police Department’s fleet of Cybertruck cruisers.

However, it seems Tesla will keep things separate. Musk is primarily focused on autonomy, which will drive the technology forward and drive shareholder growth. Something like an outfitter for performance would be a cool thing for the owners who have the interest and the money.

It’s not a tremendous revenue driver or anything that would contribute to the financial state of the company. Mercedes-Benz, for example, is more accessible for consumers as it sold over 140,000 units from its AMG brand in 2024.

Tesla Model Y driver starts race in reverse, still wins against AMG SUV

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It helps with driving revenue higher by as much as 15 percent compared to similar models that are not AMGs. However, would Tesla see this much of a benefit? Likely not, because the Performance trim already caters to many owners.

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