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Tesla patent hints at more reliable batteries through ‘dynamic’ management system

Published

7 years ago

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It is no exaggeration to state that Tesla’s business hinges on its battery technology. Fortunately for the company, its batteries are among the best in the industry today. This is particularly notable in the case of Tesla’s electric cars, as well as its energy storage products. In terms of vehicles, Tesla’s battery tech has reached a point where it is capable of supporting the demands of closed circuit driving, as is the case with the Model 3 Performance’s Track Mode. In terms of battery storage, the quality and performance of Tesla’s batteries have been so impressive in South Australia that it appears to have started an energy storage movement.

Considering Tesla’s reputation for never staying still, though, it is almost certain that the company’s batteries will improve over time. This was mentioned by Tesla’s President of Automotive Jerome Guillen to CNBC last November, when he noted that the company’s technology consistently evolves. In his segment, the executive noted that “the design of the (battery) cell is not frozen,” indicating upcoming improvements in the near future.

A recently published patent points to one of these battery tech improvements. Titled “Multi-Channel and Bi-Directional Battery Management System,” the patent describes a way for Tesla to push the envelope on its battery management system even further. In the patent’s description, Tesla noted that the increasing demand for battery-based power is putting an emphasis on the performance demands of management systems, which ensure proper operation within a range of products like electric vehicles and energy storage units.

While battery management systems perform vital functions, the units themselves could be subject to various external factors. In the case of electric cars, the system could be subject to mechanical vibration and shock, varying environmental temperature, multiple power domains and a large number of interference sources that could deteriorate signals between the centralized management controller and multiple battery integrated circuits. Considering that batteries are the only power source for electric vehicles, instances involving a failure of the system could render an electric vehicle inoperable. With this in mind, Tesla notes that there is a need for a battery management system that is “more robust and dynamic.”

Diagrams of Tesla’s battery management system. (Photo: US Patent Office)

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Tesla’s patent describes what could be dubbed as a redundant battery management system, comprising a first client coupled within a multi-channel, bi-directional and daisy-chained communication loop. The electric car maker also outlined a method for identifying a failure location within a battery management system. Tesla describes these as follows.

“The battery management system may include a host (such as a microcontroller that manages at a system level) and clients (such as battery management integrated circuits that manage battery cells within the system). In embodiments, the host may be implemented in various structures including the previously mentioned microcontroller and manages the system by transmitting commands and receiving responses from one or more of the clients. Each client may monitor and control corresponding battery cells to measure the electrical and physical status of the cells, such as voltage, amount of remaining electrical charge and temperature of each cell. For instance, the client 120a may monitor the cells 130a. It is noted that each client may monitor a different number of battery cells. The client 120a may perform measurements (e.g., voltage, charge, temperature, etc.) as well as perform certain functions (e.g., bleed-off charge from a battery cell, etc).”

Tesla further discussed its rationale behind its use of daisy-chain loops for its battery management system.

“The host and each client may communicate commands and responses via a daisy-chain transmission path loop, where the daisy-chain loop may include a pair of wires that transmit electrical signals therethrough. In embodiments, the daisy-chain loop may connect the interface of the host to the interfaces of the clients in series so that communication may serially occur on one or multiple channels within the loop. “

“The battery management system is able to provide redundant communication paths because of its ability to bi-directionally communicate along the daisy-chain loop and because the two channels used on the daisy-chain loop each allow access to completely separate and redundant battery management systems. Specifically, the host is able to communicate in a clockwise direction around the serially connected clients as well as communicate in a counter-clockwise direction along the loop. This bi-directionality allows the host to communicate with each client in case there is a single failure within the daisy-chain loop. This redundancy applies to both channels.”

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Ultimately, Tesla notes that these systems will result in what could only be described as “dynamic redundancy” across its battery management systems. This, of course, could foster a new generation of battery packs that are more reliable than the company’s already stellar batteries.

“One skilled in the art will recognize the use of a multi-channel signaling system as well as a bi-directional signaling architecture within the battery management system results in dynamic redundancy across the system itself. For example, if a primary or secondary circuit should fail on a client, the host may communicate a redundant command to the client using a different and fully operational channel. The multiple channel architecture ensures that even egregious malfunction of a sub-system, such as the transmission of spurious data, will not be able to interfere with normal operation of a complementary subsystem operating on a different channel. In addition, the bi-directionality of the system allows for compensation to occur in the event of a complete path failure somewhere within the loop.”

The past months have seen an influx of published patents for Tesla. Among these include an automatic tire inflation system patent that can pave the way for off-road capabilities for the company’s vehicles, a clever patent that would allow Tesla to address panel gaps during vehicle assembly, a patent that describes colored solar roof tiles, and even a system that uses electric cars as a way to improve vehicle positioning.

Tesla’s recently published patent on its Multi-Channel and Bi-Directional Battery Management System could be accessed in full here.

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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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Here’s what changed in the Tesla Cybercab since last year’s unveiling

The latest sightings suggest that the fully autonomous two-seater is now moving closer to production.

Published

13 minutes ago

on

November 6, 2025

By

Credit: wudapig/Reddit

An apparent production-ready prototype of the Tesla Cybercab has been spotted testing in public, and it revealed several subtle but notable design updates compared to its 2024 prototype. 

The latest sightings suggest that the fully autonomous two-seater is now moving closer to production.

Subtle design refinements

The new photo of the Cybercab prototype was initially posted on the r/TeslaLounge subreddit, where it proceeded to receive numerous responses. As per the user who posted the image, the photo was taken in California, and the vehicle was reportedly fitted with a steering wheel. 

Based on the image, the Cybercab appears to have received a revised tail design, which now rises slightly, likely to improve aerodynamics. Tesla also appears to have shortened the rear body panel below the lighting section. Other updates include a slightly redesigned rear bumper, red reflectors repositioned farther from the wheel arches, and unpainted side repeater cameras that seemed to have been moved slightly forward, likely for better visibility.

The Cybercab’s B-pillar has also been shifted forward and now sits slightly lower, accompanied by larger door panels that likely make entry and exit easier. The vehicle’s tires are no longer painted either, nor do they have an extended wheel cover. Interestingly enough, the prototype was also fitted with side mirrors, though these are likely just for regulatory testing purposes and would be removed in the vehicle’s final production version.

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An In-and-Out tease

At the end of October, the Tesla AI team teased some of the Cybercab’s progress with a lighthearted “Animal Style” Halloween post featuring the autonomous two-seater being driven through an In-N-Out drive-through by employees in costume. Longtime Tesla watchers noted that the In-and-Out photos continue a long-standing tradition of Tesla driving its prototypes through the fast food chain’s drive-throughs.

The In-and-Out photos of the Cybercab also revealed some updates that have been implemented on the vehicle’s front end. These included what appears to be segmented DRLs and headlamps, actual turn signals, and a splitter that’s a lot sharper. Some noted that the vehicle looks sharper than the prototypes from last year’s We, Robot event, but this also resulted in the Cybercab looking a bit less “Cyber” now.

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Tesla MultiPass in Europe expands, allowing ease of access to non-Tesla chargers

Published

6 hours ago

on

November 5, 2025

By

Credit: TeslaCharging | X

The Tesla MultiPass program in Europe is expanding to new countries. The program was launched earlier this year to assist Tesla owners in having an easier charging experience at non-Tesla EV chargers.

In September, Tesla launched the MultiPass program to owners in the Netherlands, which aimed to enable charging for Tesla owners at third-party stations using the app or keycard. It was developed to avoid having to use multiple apps for each charging manufacturer.

Tesla launches MultiPass to simplify charging at non-Tesla stations

Both access and payment would be performed through the Tesla app, streamlining the entire process.

Today, Tesla expanded the program to Sweden, Germany, the United Kingdom, France, and Belgium, building on its initial rollout and partnering with companies like Fastned to improve EV roaming coverage across the continent.

The program is still in its early stages, and it appears to have some issues, which were highlighted by owners.

Some state that the different designs between chargers can create a bit of a hassle, especially as some do not properly display charging rates and inconsistent pricing displays.

Additionally, Tesla’s Trip Planner and other route planner integrations are not as descriptive as they should be, so some owners suggested reliability and visibility improvements.

Tesla partnered with Electrify America, Rivian’s Adventure Network, and other networks to expand charging availability and make options more readily available.

Tesla’s Supercharger presence in Europe has expanded quite a bit over the past few years, but EVs are much more prevalent there than they are here in the U.S. The company has done a great job of growing the Supercharger presence this year, and there are currently over 11,000 stalls on the continent.

This year, Tesla added 200 total stations and roughly 1,250 total stalls, a 16 percent increase from last year. Europe also has a high concentration of V4 Superchargers, as nearly 42 percent of the stalls on the continent are V4, giving higher charging rates of up to 500 kW.

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Cybertruck

Tesla announces delivery timeline for Cybertruck in new market

“Coming soon! Estimated deliveries in Q1 for UAE.”

Published

18 hours ago

on

November 5, 2025

By

Credit: Tesla

Tesla announced its delivery timeline for the Cybertruck as it heads to a new market.

Tesla Cybertruck deliveries started in the United States and Canada back in late 2023. However, the company has been looking to expand the all-electric pickup to new markets, including the Middle East, for which it opened up orders for earlier this year.

Initially, Tesla planned to launch deliveries late this year, but there has been a slight adjustment to the timeline, and the company now anticipates the pickup to make its way to the first adopters in the United Arab Emirates in Q1 2026.

This was confirmed by the Tesla Cybertruck program’s lead engineer, Wes Morrill:

Tesla first opened orders for the Cybertruck in the Middle East in mid-September of this year. It will be priced at AED 404,900 for the Dual Motor All-Wheel-Drive ($110,254) and AED 454,900 ($123,869) for the Cyberbeast trim.

The Cybertruck has been a highly anticipated vehicle in many parts of the world, but its ability to be sold in various regions is what is truly causing delays in the company’s efforts to bring the electric pickup worldwide.

Tesla confirms Cybertruck will make its way out of North America this year

In Europe, various agencies have challenged the design of the Cybertruck, arguing that it is unsafe for pedestrians due to its sharp edges and “boxy” design.

Agencies in the EU have said the vehicle’s “blade-like” protrusions are a violation of rules that ban sharp exterior edges that could cause severe injuries.

In Asia, Tesla will likely have to develop a smaller, more compact version of the vehicle as it does not align with local standards for urban environments. However, Tesla filed for energy consumption approval for the Cybertruck in December 2024, but there has been no real update on the status of this particular inquiry.

Overall, these issues highlight a real bottleneck in futuristic vehicle designs and the out-of-date regulations that inhibit the vehicle from becoming more widely available. Of course, Tesla has teased some other designs, including a more traditional pickup or even a compact Cybertruck build, but the company is not one to shy away from its commitments.

Nevertheless, the Cybertruck will appear in the Middle East for the first time in 2026.

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