AI-powered cloud-connected EV battery management system

2 mins read

NXP Semiconductors has developed a new solution that connects its high-voltage battery management system (HVBMS) through its S32G GoldBox vehicle networking reference design to the cloud to leverage an AI powered battery digital twin.

NXP is using Electra Vehicles’ EVE-Ai 360 Adaptive Controls technology to use digital twin models in the cloud to predict and control the physical BMS in real time, to improve battery performance, battery state of health of up to 12% and enable multiple new applications, such as EV fleet management.

Batteries remain the costliest element in an electric vehicle (EV), and AI-powered digital twin cloud services have the potential to improve estimations of the battery’s state of health (SOH) and state of charge (SOC) to deliver improved efficiency, lifetime and cost.

Battery digital twins adapt to ongoing changes in battery health due to operating conditions and provide updated figures back to the BMS for continuously improving control decisions.

Carmakers can use the technology to provide driver insights, such as range and speed recommendations. In addition, adaptive battery control can improve the battery’s performance and safely extend its lifespan, reducing warranty costs for the carmaker.

Another potential application is EV fleet management, providing fleet operators with usage insights, such as vehicle charging times and battery predictive diagnostics. Battery care centres can also use this information to reduce downtimes with rapid diagnostics, and EV charging station operators can effectively optimise their charging service and energy efficiency.

As the EV market grows, so will the supply of second-life batteries. Although they may have reached the end of their ‘automotive life’, these batteries have a significant residual capacity of up to 80%. Tapping into that remaining useful battery life (RUL) in energy storage systems (ESS) for homes has the potential to reduce homeowners’ energy bills.

The AI-powered battery digital twin solution with Electra Vehicles, operates using highly accurate sensors, real-time closed-loop control of the BMS and network connectivity combined with predictive algorithms. The solution comprises three elements.

NXP’s S32K3-based HVBMS Reference Design offers high precision and accuracy to extend battery life safely. Having precise measurements of the battery’s SOH and SOC leverages the full potential of the battery and thus maximizes driving range with accurate diagnostics.

The second element is NXP’s S32G-based vehicle networking processing solutions. NXP GoldBox provides safe high-performance computing capacity and real-time network performance with secure cloud connectivity for data-driven cloud-based automotive services.

NXP is collaborating with Electra Vehicles for the third and final element of the digital twin solution, which is to implement its EVE-A adaptive digital twin and connect its electrification solutions seamlessly to the cloud.

“NXP's contribution to the digital twin technology lies in the access to accurate sensor data, real-time closed-loop control of the BMS, high-performance in-vehicle processing and secure connectivity to the cloud for services and over-the-air (OTA) updates. By integrating Electra’s EVE-Ai architecture, we address the two main challenges associated with the digital twin approach,” said Dr. Andreas Schlapka, Director & Segment Manager Battery Management Systems, NXP Semiconductors. “These are coping with the abundance of data from our electrification solutions, which requires cleansing and appropriate feature selection, and the variance of use cases, which requires model selection and adaptive training.”