NXP Semiconductors has announced a new Battery Cell Controller portfolio suitable for automotive Battery Management Systems.

The Battery Cell Controllers combined with NXP’s portfolio of automotive microcontrollers (MCUs), power management system basis chips (SBCs) and communication transceivers provide reference design platforms for controlling energy storage in Electric Vehicles.

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The energy required to power the main traction motors in electric vehicles is stored in batteries made up of many individual Lithium-Ion cells. The accurate measurement and management of each of these cells is critical to the safety and dependability of the complete battery pack.

Battery Management Systems are designed to monitor the critical state-of-charge, state-of-health and battery temperature of the individual cells, while precisely measuring currents into and out of the battery pack.

NXP’s new Battery Cell Controller ICs pair with NXP’s portfolio of functional safety System Basis Chips and Microcontrollers to enable scalable Battery Management Solutions based on communication and functional safety up to ASIL-D. The new Battery Cell Controllers (MC33771B and MC33772B) advance measurement capability and functional integration.

“Volkswagen is working to address the increasingly demanding performance and functional safety requirements in the next generation of battery management systems,” said manager PEP Electronics and Testing by Volkswagen Kompetenz Centre, Elektromobilitat, Michal Bruna.

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“We undertook an extended evaluation process to approve NXP’s MC33771B Battery Cell Controller for our future system. We trust NXP’s leadership and innovation to enable us to realise these important goals towards a green and safe society.”

More than a dozen automotive Tier-1 customers have adopted NXP’s Battery Management Solutions globally for use in production and are currently in development with multiple carmakers.

Implementations span multiple applications including battery management of 14V batteries, 48V systems for Mild-Hybrid vehicles and high voltage battery stacks and junction boxes with up to 96 cells for 200 to 800 V Hybrid and Pure Electric vehicles.

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