With wBMS, OEMs and battery suppliers are liberated to design and produce as many battery pack variants as they like without ever designing a harness. They can leverage a common wBMS platform that’s software configurable for individual vehicle models, at lower overall development costs. This remains the heart of the wBMS value proposition: OEMs gain increased flexibility to scale their EV fleets into volume production across a wide range of vehicle classes to meet evolving consumer demand. In adopting wBMS to underpin its breakthrough Ultium battery platform, GM can scale the platform across its brands and vehicle segments, from work trucks to performance vehicles. More broadly, GM credits wBMS technology for enabling the more widespread electrification of its fleet.
But there’s much more that can be done to lower the carbon footprint of a battery pack over its usable lifetime, while extending the associated revenue potential. This
is achieved through a “reduce, repair, and reuse” strategy whereby wBMS can help reduce costly vehicle recalls, streamline repairs, and promote battery reusage as a
preferred alternative to scrapping and recycling.
wBMS makes it considerably easier to maintain a stock of spare modules, and they are a lot easier to swap in/out of battery packs during vehicle service. There’s no time loss or frustration associated with tracking and locating inventory, or attempting to remove the battery harness (without breaking it) during a service call. Modules are simply scanned in/out as they migrate through the supply chain, and finally from stock shelf to vehicle, with installation ease that traditional wired BMS could never match. This impacts more than just service at the EV development phase. Pack designers no longer need to spend precious time and space to accommodate how the harness will be removed and replaced, resulting in faster design and more energy dense packs.
wBMS features can also enable batteries to measure and report their own performance, increasing early failure detection and helping avoid costly vehicle recalls,
while enabling optimized battery pack assembly. The data can be monitored remotely throughout the battery life cycle—from assembly to warehouse and transport, through installation and maintenance.
For OEMs interested in maximizing the usable life—and revenue potential—of their battery packs, wBMS makes second life battery repurposing much more
efficient. Minus the harness, battery packs are much easier to repair and reuse to ensure the longest possible lifetime and a more environmentally friendly carbon
footprint overall. OEMs can readily resell their used batteries for applications like solar or wind energy storage once they reach a determined state of health.
Analog Devices estimates that OEMs pursuing this reduce, repair, and reuse strategy can eliminate 7 tons of carbon emissions per battery pack if it’s repaired and not recycled. In terms of cost savings, OEMs typically earmark approximately $1000 to recycle each individual EV’s battery pack—this can exceed the profit the OEM made on the original vehicle sale, so it makes good business sense for OEMs to explore ways to resell their used EV batteries as quickly as possible so as to get the most value out of them.