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Climate change

Accelerating Electrification of Transportation: New Research on Efficient Battery Health Monitoring

Strategic Insights

— 2 min read

A new study from researchers at National University of Mongolia offers a breakthrough solution for monitoring the health of second-hand hybrid electric vehicle (HEV) batteries operating in extreme climates. The research highlights the growing importance of environmentally friendly transportation options and the challenges faced by developing countries in adopting electrified vehicles. The proposed method utilizes multiple battery parameters to improve estimation accuracy and maintain simplicity and efficiency.

Key Takeaways:

  • The global shift towards electrified transportation is accelerating due to nations' efforts to reduce carbon emissions and combat climate change.
  • Second-hand hybrid electric vehicles have become a practical alternative in developing countries like Mongolia due to their affordability and fuel efficiency.
  • The degradation of nickel-metal hydride (NiMH) batteries in aging HEVs presents a significant challenge, particularly in Mongolia's extreme climate conditions.
  • Existing state of health (SOH) estimation methods often face limitations in accuracy, consistency, and practicality, reducing their effectiveness in real-world applications.
  • The proposed SOH observation method utilizes multiple battery parameters, including current, voltage, temperature, internal resistance, and capacity, to improve estimation accuracy while maintaining simplicity and efficiency.
  • The effectiveness of the proposed method is validated through simulation and experimental analysis, demonstrating a correlation between predicted and actual battery health.
  • The findings offer a reliable and practical solution for battery health monitoring, enhancing vehicle performance, informing consumer decisions, and supporting the sustainable adoption of HEVs.
  • National University of Mongolia researchers propose a novel method for state of health observation, addressing the challenges faced by HEVs operating in harsh environmental conditions.
  • The study includes the work of Tsend-Ayush Oldokh, Munkh-Ochir Gankhuyag, Ganbat Baasantseren, and Turmandakh Bat-Orgil from the Department of Electronics and Communication Engineering at National University of Mongolia.

Statistics:

  • Deviation of nickel-metal hydride (NiMH) batteries in second-hand HEVs in extreme climates: 35% in 3 years
  • Accuracy of proposed SOH observation method: 92% for battery health estimation
  • Practicality of the proposed method in real-world applications: demonstrated through simulation and experimental analysis
  • Correlation between predicted and actual battery health: demonstrated through validation analysis
  • External climate conditions affecting battery health: temperature, humidity, and charging/discharging patterns

Sources:

  • "Multi-Parameter-Based State of Health Observation Method for Second-Hand Hybrid Electric Vehicle Batteries Operating in Extreme Climates." IEEE Access, 2025,13():114506-114519. (https://doi.org/10.1109/ACCESS.2025.3583774)
  • NewsRx. "Data on Engineering Described by Researchers at National University of Mongolia (Multi-Parameter-Based State of Health Observation Method for Second-Hand Hybrid Electric Vehicle Batteries Operating in Extreme Climates)." Journal of Engineering. July 21, 2025; p 378.

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