Future GM EVs To Be Equipped With High-Tech Wireless Battery Management SystemSeptember 10, 2020
General Motors is working on a number of electric vehicles, including the Cadillac Lyriq and GMC Hummer EV. While we know a little about them already, the company has announced that future models will have a near-wireless battery management system (wBMS).
While that doesn’t sound too exciting, GM said the new battery management system should accelerate the development of electric vehicles, as it means engineers won’t have to “design specific communications systems or redesign complex wiring diagrams for each new vehicle.” New technology can also receive updates over the air, which means that new features can be added over time.
While the system is not completely wireless, it cuts battery wires by up to 90 percent. This helps reduce weight and also frees up space that can be used to increase battery capacity.
In addition to these benefits, wBMS will help “balance the chemistry of individual battery cell groups for optimal performance.” It can also perform real-time battery health checks and “refocus the network of modules and sensors as needed” to help maintain battery health.
When the battery is ready to be reused in the vehicle, wBMS makes it easy to use in secondary applications such as a battery pack. As GM explained, “When the capacity of the wireless units is reduced to the point where they are no longer ideal for optimal vehicle performance but still function as stable power supplies, they can be combined with other wireless battery packs to create clean energy generators. This can be done without redesigning or overhauling the battery management system traditionally required for secondary use. ”
A wireless battery monitoring system will be standard on electric vehicles with Ultium batteries, and GM CEO of Global Electrification and Battery Systems Kent Helfrich said, “The wireless system is the epitome of Ultium configurability and should help GM create profitable electric vehicles on a large scale.”
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