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        home > news > Automakers > GM Highlights Innovations in New Battery Technology

        GM Highlights Innovations in New Battery Technology

        Company shows off new wireless battery management tech.

        Joseph Szczesny
        Joseph Szczesny , Executive Editor
        Sept. 10, 2020
        GM’s wireless battery management system is expected to drive the company’s Ultium-powered EVs to market faster.

        General Motors has been in a rush during the past week to stake out a larger territory in the emerging market for electric vehicles, announcing alliances with Honda, Nikola and Uber that are expected to help expand its ambitious plans for EVs.

        GM also touting its electric vehicle-oriented innovations by announcing it will be the first automaker to use an almost completely wireless battery management system, or wBMS, for production electric vehicles.

        This wireless system, developed with Analog Devices Inc., will be a primary driver of GM’s ability to ultimately power many different types of electric vehicles from a common set of battery components.

        (GM teams up to help Uber go 100% electric.)

        “Scalability and complexity reduction are a theme with our Ultium batteries – the wireless battery management system is the critical enabler of this amazing flexibility,” said Kent Helfrich, GM executive director of Global Electrification and Battery Systems.

        GM officials claim that wBMS will bring its Ultium battery technology to market more quickly.

        “The wireless system represents the epitome of Ultium’s configurability and should help GM build profitable EVs at scale,” he added.

        The wire-free system is expected to drive GM’s Ultium-powered EVs to market faster, as time won’t be needed to develop specific communications systems or redesign complex wiring schemes for each new vehicle. Instead, the wBMS helps to ensure the scalability of Ultium batteries across GM’s future line-up, encompassing different brands and vehicle segments, from heavy-duty trucks to performance vehicles.

        GM’s Ultium batteries, which are flexible enough to incorporate new chemistry over time as technology changes, the wBMS’ basic structure can easily receive new features as software becomes available. With expanded over-the-air updates provided by GM’s all-new Vehicle Intelligence Platform, the system could even be upgraded over time with new software-based features via smartphone-like updates.

        (GM forges $2B deal with Nikola to build trucks, develop new electric and fuel cell technology.)

        The wBMS will help GM’s electric vehicles balance chemistry within the individual battery cell groups for optimal performance. It can also conduct real-time battery pack health checks and refocus the network of modules and sensors as needed – this helps safeguard battery health throughout the vehicle’s lifespan.

        General Motors’ Ultium battery system will be the cornerstone of the company’s EV efforts going forward.

        By reducing wires within the batteries by up to 90%, the wireless system can help extend charging range by creating lighter vehicles overall and opening extra room for more batteries. The space and flexibility created by this reduction in wires not only enables a cleaner design, but also simpler and more streamlined battery restructuring as needed and more robust manufacturing processes.

        This wireless system also provides a unique repurposing capability for battery reuse in secondary applications more easily than conventional wired monitoring systems. When the wireless packs are capacity-reduced to the point where they are no longer ideal for optimum vehicle performance, but still functional as consistent power supplies, they can be combined with other wireless battery packs to form clean power generators. This can be done without a redesign or overhaul of the battery management system traditionally required in second-life usage.

        GM’s wireless battery management system is protected by cybersecurity measures that are foundational to the company’s all-new electrical architecture or Vehicle Intelligence Platform. The DNA of this system includes protective features within the hardware and software layers, including protection of wireless communications.

        “General Motors is paving the way toward an all-electric future, and Analog Devices is proud to work with this highly respected automotive leader on the next generation of electric vehicles,” said Greg Henderson, Analog Devices Inc. senior vice president of Automotive, Communications and Aerospace & Defense. “Our collaboration is aimed at accelerating the transition to electric vehicles and a sustainable future.”

        (GM, Honda strengthen existing partnership.)

        The wireless battery monitoring system will be standard on all planned GM vehicles powered by Ultium batteries.

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