Enzipu releases a battery management system IC to improve the full lifecycle performance and battery pack safety of electric vehicles and energy storage systems
Time:2023-10-26
Views:599
The measurement accuracy of the battery cells in the new generation battery management system IC of Enzhipu is as low as 0.8 mV, and its design robustness is considered throughout its lifecycle, which can enhance the performance of the battery management system, fully tap into the available capacity of lithium-ion batteries and energy storage systems in electric vehicles, and improve safety
NXP Semiconductors N.V. (Nasdaq stock code: NXPI) has launched the next generation battery controller IC, aimed at optimizing the performance and safety of battery management systems (BMS). Enzhipu‘s MC33774 18-channel analog front-end device can provide cell measurement accuracy as low as 0.8 mV and excellent cell balancing force over a wide temperature range, supporting functional safety level ASIL-D, suitable for use in high-voltage lithium-ion batteries closely related to safety, to fully tap into available capacity.
Product Importance
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 cost, and ability to withstand thousands of charging and discharging cycles. Batteries account for approximately 30-40% of the total cost of electric vehicles. A typical 800V lithium-ion battery system consists of approximately 200 individual battery units connected in series. Accurately estimating the state of charge (SoC) of a battery pack at any specific temperature and instant is crucial during its lifespan that spans several years. Enzipu‘s MC33774 can provide accurate battery measurement data throughout its entire life cycle within the full temperature range of -40 ° C to+125 ° C, achieving highly accurate mileage prediction.
Vice President of Enzipu Li Xiaohe, General Manager of the New Energy and Drive System Product Line, stated: MC33774 has undergone a rigorous design and verification process to ensure its safety and reliability in automotive applications. This includes testing electromagnetic compatibility, electrostatic discharge performance, transient immunity, and communication reliability in demanding scenarios through system level verification. MC33774 aims to reduce the cost of OEM systems while maintaining their reliability, ensuring that the electric vehicle industry can safely market vehicles even within a short development cycle
more details
The MC33774 lithium-ion battery unit controller adopts Enzipu‘s SmartMOS SOI (Insulated Silicon) technology, which can provide battery measurement accuracy as low as ± 0.8 mV, helping to ensure the lifespan performance of nickel manganese cobalt (NCM) and lithium iron phosphate (LFP) battery chemicals. The precision design and calibration technology of Enzipu MC33774 can save customers the cost of offline inspection (EOL) calibration.
The Enzhipu MC33774 18 channel lithium-ion battery management system IC is part of the Enzhipu high-voltage BMS chipset solution, which includes future products such as MC33777 (battery junction box controller for battery pack level measurement), as well as the already released MC33665 battery management communication gateway. This comprehensive and powerful BMS system solution provides a successfully developed battery system at once, while striving to avoid the occurrence of on-site accidents. The complete design package includes production level software and functional safety libraries, which helps to accelerate the development speed of functional safety systems and save system costs.
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