NXP Releases Battery Management System ICs to Improve Full Lifecycle Performance and Battery Pack Safety for Electric Vehicles and Energy Storage Syst
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Update time : 2023-11-06 09:44:20
NXP Semiconductors N.V. (NASDAQ: NXPI) has introduced a next-generation battery controller IC designed to optimize battery management system (BMS) performance and safety. NXP's MC33774 18-channel analog front-end device provides cell measurement accuracy as low as 0.8 mV over a wide temperature range and excellent cell equalization force, supporting functional safety level ASIL-D, making it suitable for use in high-voltage lithium-ion batteries, which are closely related to safety, to fully exploit the available capacity.
Lithium-ion batteries are widely used in electric vehicles due to their high energy density per unit volume and weight, low self-discharge rate, low maintenance costs, and ability to withstand thousands of charge/discharge cycles. Batteries account for about thirty to forty percent of the total cost of an electric vehicle. A typical 800V lithium-ion battery system consists of about 200 individual cells connected in series. It is critical to accurately estimate the state of charge (SoC) of the battery pack at any given temperature and instant over a life cycle of several years. NXP's MC33774 provides accurate battery measurements over the full life cycle over the full temperature range of -40°C to +125°C, enabling highly accurate mileage predictions. The MC33774 has undergone a rigorous design and validation process to ensure its safety and reliability in automotive applications," said Xiaohe Li, vice president and general manager of NXP's New Energy and Drive Systems product line. This includes testing for electromagnetic compatibility, electrostatic discharge performance, transient immunity and communication reliability in demanding scenarios through system-level validation. the MC33774 is designed to reduce the cost of OEM systems while maintaining their reliability, ensuring that the electric vehicle industry can bring vehicles to market safely even in shorter development cycles." The MC33774 lithium-ion battery cell controller utilizes NXP's SmartMOS SOI (silicon-on-insulator) technology, which provides battery measurement accuracy down to ±0.8 mV, helping to ensure the lifetime performance of nickel-manganese-cobalt (NCM) and lithium-iron phosphate (LFP) battery chemistries. The NXP MC33774's precision design and calibration technology saves customers the cost of off-line inspection (EOL) calibration. The NXP MC33774 18-channel lithium-ion battery management system IC is part of NXP's high-voltage BMS chipset solution, which includes future products such as the MC33777, a battery junction box controller for pack-level measurements, and the already released MC33665 battery management communication gateway. This comprehensive and robust BMS system solution provides a one-time successful development of a battery system while working to avoid field surprises. The complete design package includes production-grade software and functional safety libraries to help speed development of functional safety systems and save system costs.
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