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Battery Management Systems for Vehicle Electrification
Submission status
Closed
Submission deadline
The world is actively optimizing and adjusting its energy infrastructure and implementing carbon-neutral policies. Globally, the automotive industry is moving towards electrification and intelligent transformation. The lithium-ion battery is the main energy storage component in electric vehicles due to its high energy density. However, large large-scale lithium-ion batteries still face many challenges. Degradation, instability at high temperatures, performance degradation at low temperatures, risk of overcharge and over-discharge, and difficulty in fault diagnosis and prognosis, all weaken the market competitiveness of electric vehicles. Monitoring and management are required to ensure safety and reliability during operation. Common tasks of battery management systems include accurate state estimation, battery balancing, safe and efficient charge/discharge strategies, thermal management, fault diagnosis, and prediction.
Advanced battery management systems are expected to improve the performance of the battery at the cell, module, and pack levels. With this in mind, we open this Collection with the goal of developing advanced battery management systems for electric vehicles. The Collection will publish high-quality Research, Reviews Perspectives and Commentary. Potential topics include, but are not limited to, the following research areas:
Battery management system: design, control and simulation.
State estimation: modelling, state estimation including the state of charge, state of health, state of power and energy, equalization, charge/discharge strategy.
Max Naylor Marlow and coworkers investigate the effects of thermal gradients on lifetime degradation of parallel-string battery systems. They experimentally demonstrate previously overlooked cathode impedance growth is a key contributor to the heterogeneities on pack degradation, providing insights for battery developers.
Shen Li and colleagues investigate the effect of thermal gradients on battery inhomogeneous degradation using a 3D electro-thermal-degradation model. They find a positive feedback mechanism responsible for the accelerated rate of degradation, which improves the accuracy of battery degradation rate prediction.
A 3D model of a lithium-ion battery reveals that in-plane temperature nonuniformity within electrodes as they charge and discharge is strongly affected by solid-state diffusion processes. The findings hint at methods to diagnose the microscopic mechanisms underlying battery performance.
Alexander Blömeke and colleagues investigate the conditions under which the balancing resistors in battery systems can be used for impedance measurements. This helps to improve state estimation and results in safer and more sustainable battery systems.