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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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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 considers making a big move with Model Y pricing as demand is skyrocketing

“Trending toward a need to expedite output even further, which could mean adjusting pricing upward in the coming days. Trying hard not to, will see.”

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Credit: Tesla

Tesla is considering making a big move with Model Y pricing as demand is skyrocketing due to the EV tax credit expiring in just over a month.

With the $7,500 EV tax credit set to be removed on September 30, Tesla is experiencing increased demand for its Model 3 and Model Y. Customers are doing whatever they can to take delivery of the car they ordered as soon as possible.

The IRS recently adjusted the EV tax credit’s rules slightly.

Tesla set to win big after IRS adjusts EV tax credit rules

Previously, the vehicle had to be delivered by September 30, but a slight tweak the agency made last week will now allow customers to enter a legally binding contract along with a marginal down payment by that date. The delivery can occur after September 30, and the car can still qualify for the credit.

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However, demand is getting so crazy for the Model Y that Tesla is considering a price increase on the all-electric crossover, as well as a potential boost in production output to keep up with orders.

Inventory is dwindling in several markets across the United States, a good sign for the company, as it could have one of its best quarters in recent history in terms of deliveries.

However, Tesla is thinking of bumping the price slightly, Raj Jegannathan, the company’s VP of IT, AI Infrastructure, Apps, Infosec, and Vehicle Service Operations, said on X:

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The price adjustment would come as a response to increasing production output, Jegannathan’s response seems to indicate.

The bump would help Tesla’s margins, but the idea that the company could adjust pricing by increasing it would not be popular with potential car buyers. It might encourage some buyers to put their orders in sooner, hoping to avoid a new, higher price.

However, it could also steer some buyers away from putting an order in on a vehicle, especially if the price increase is more than a few hundred dollars.

Tesla boosted the price of the Model S, Model X, and Cybertruck recently, but brought in a “Luxe Package” to help justify it.

It comes with Free Full Self-Driving, Free lifetime Supercharging, four years of premium service, and lifetime Premium Connectivity.

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Tesla produces 100,000th new Model Y in Giga Berlin

The milestone was announced on X.

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Credit: Tesla Manufacturing/X

Tesla has produced its 100,000th new Model Y at Gigafactory Berlin. The milestone was announced by the electric vehicle maker through its official Tesla Manufacturing account on social media platform X. 

New Tesla Model Y milestone

The milestone was announced by Tesla on X, when the company wrote “Today, we built the 100,000th New Model Y at Giga Berlin!” The announcement was accompanied by an image of a new Model Y coming off the line.

The milestone was received warmly by members of the Tesla community, many of whom expressed excitement at the further progress of the new Model Y program at Giga Berlin. The facility, after all, only produces Model Y units, which would make it the perfect site to produce new variants like the Model Y Performance and possibly even the Model Y L, which was recently launched in China. 

New Model Y ramp

As noted in a previous report from electrive, the initial production of the new Model Y started in Giga Berlin around mid-January 2025. Since the new Model Y involved a changeover from the legacy Y to the new variant, the ramp of the new Model Y’s production at the Germany-based facility was likely a gradual process over the past months. 

It would then be no surprise if the next 100,000 new Model Y units would be produced in Giga Berlin in a shorter period. Giga Berlin could become an even bigger factor in Tesla’s global sales, after all, especially if it becomes the site that produces the Model Y Performance and the Model Y L for Europe and other territories. Giga Berlin, if any, seems to be quite busy recently, with aerial videos of the facility showing a fleet of mysteriously covered Model Y units being stored within the complex.

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Tesla set to win big after IRS adjusts EV tax credit rules

“For purposes of sections 25E, 30D, and 45W, a vehicle is ‘acquired’ as of the date a written binding contract is entered into and a payment has been made. A payment includes a nominal down payment or a vehicle trade-in.”

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Credit: Tesla

Tesla is set to potentially come out as a big winner as the IRS has adjusted the rules of the $7,500 EV tax credit slightly.

The $7,500 tax credit for electric vehicles is set to expire on September 30, but the IRS has made a slight adjustment to the terms of the credit that will give consumers a bit more time to buy an EV and receive the discount.

The original terms of the EV tax credit were that delivery of an EV must be completed by September 30. Even if you had made a reservation or put a down payment on an EV, if it did not arrive and take delivery by September 30, the credit would not apply to you.

Tesla is ready with a perfect counter to the end of US EV tax credits

This put some people in quite a tough situation. As wait times for some EVs, especially Tesla Model Y and Model 3 vehicles, continue to be pushed back due to an increase in demand as consumers are trying to take advantage of the credit, some car buyers ordered a car that was not the trim level, paint color, or interior color that they wanted.

However, the IRS has adjusted the terms of the tax credit to enable people to have a bit more time to get the vehicle they want.

Late last week, the agency said that the meaning of “acquired” has been changed, and now, if a consumer has entered a legally binding contract to take delivery of the vehicle, which includes a nominal down payment on the car, they can take delivery after the previous September 30 deadline and still qualify for the credit.

The IRS wrote:

“For purposes of sections 25E, 30D, and 45W, a vehicle is ‘acquired’ as of the date a written binding contract is entered into and a payment has been made. A payment includes a nominal down payment or a vehicle trade-in.”

Tesla could come out as a big winner here because of this. The company is experiencing a lot of demand for its cars because of the tax credit’s expiration, and now that the rule has been adjusted to include orders received by the 30th as long as they’re accompanied by a nominal down payment, some of these high-demand deliveries could leak into Q4.

Q3 is likely going to be a very strong quarter for Tesla, and questions remain about how the company will perform in subsequent quarters since the tax credit is going away. However, this slight adjustment is a big plus for Tesla and other EV makers.

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