BorgWarner’s battery management system (BMS) has secured an expanded series-production contract with a global OEM, building on a partnership that began in 2023. The extended agreement will cover additional B- and C-segment passenger vehicles as well as light commercial vehicles, supporting both battery-electric (BEV) and plug-in hybrid (PHEV) models starting in 2029.
Dr. Stefan Demmerle, Vice President of BorgWarner and President and General Manager of BorgWarner PowerDrive Systems, said the expansion reflects the customer’s trust in the company’s production-proven technology already operating in vehicles. As the automaker broadens its electrified lineup, BorgWarner is enhancing system compatibility to enable efficient scaling while maintaining high standards of safety, durability, and performance.
The modular BMS features a central battery monitoring unit (BMU) linked to multiple cell monitoring units (CMUs) within the battery pack. The system tracks state of charge, battery health, and temperature, measures individual cell voltages, and performs passive cell balancing to optimize performance and support long-term reliability.
The system supports fast direct current (DC) charging communication and includes built-in controls and diagnostics designed to help meet demanding safety expectations, including Automotive Safety Integrity Level D (ASIL D) functional safety goals. The scalable architecture can be configured for a wide range of BEV and PHEV battery pack designs and is suitable for applications operating up to 800 volts. The compact module-level units enable flexible packaging options, and the electronics platform can be upgraded to support future functions.
Building on decades of global automotive electronics experience, the expanded program promotes a design that has been validated in series production, helping customers scale electrified vehicle portfolios while leveraging established functionality and a proven supply footprint.
