Ahmed Chahbaz

RWTH Aachen University · Institute for Power Electronics and Electrical Drives

A comprehensive electric vehicle model is developed to characterize the behavior of the Smart e.d. (2013) while driving, charging and providing vehicle-to-grid services. To facilitate vehicle-to-grid strategy development, the EV model is completed with the measurement of the on-board charger efficiency and the charging control behavior upon externa...

Lithium titanate oxide (LTO) based batteries are one of the most promising technologies for various types of future applications with high-power demands due to their long cyclic stability and superior safety. In this further analysis we investigated different mechanisms influencing the ageing behaviour of LTO cells. Our analysis shows, that in cont...

Today’s most commonly used binder material for Li-ion batteries is PVDF, whose disadvantages are low elasticity and the need of NMP usage as an organic solvent, which is toxic, expensive and not recyclable. Water-soluble binder materials offer advantages due to their non-toxicity, making them biologically degradable. Chitosan is a newly water-solub...

An electric vehicle model is developed to characterize the behavior of the Smart e.d. (2013) while driving, charging and providing vehicle-to-grid services. The battery model is an electro-thermal model with a dual polarization equivalent circuit electrical model coupled with a lumped thermal model with active liquid cooling. The aging trend of the...

Lithium-titanate-oxide (LTO) batteries are one of the most promising technologies for various types of future applications in electric mobility, stationary storage systems and hybrid applications with high-power demands due to their long cyclic stability and superior safety. This paper investigates the cyclic and calendar ageing of 43 same-typed LT...

The electrical and thermal behaviour of a prismatic LTO cell is analyzed and modelled for different operation ranges. Afterwards the validated models are used to simulate a complete traction battery compromising of over 1000 interconnected cells for a high-power railway application. Under consideration of side cooling pipes and cell-to cell variati...