Automotive and mobile applications


Novel barriers for preventing thermal propagation – From research to market

The overall increasing application of lithium-ion batteries, driven by the field of electric vehicles and stationary storage systems forcing a permanently increase of energy and power density. Hence, new cell chemistries with thermally sensitive materials are developed by battery industry to meet the customers’ requirements in driving range. Therefore, thermal

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Fast-charging in practice – a way to get it done!

The ability to fast-charge Lithium-Ion batteries is a key requirement for the success of electric vehicles. One main problem when fast-charging Lithium-Ion batteries is Lithium-plating. There, the Lithium-Ions are not intercalated into the anode but are deposited on its surface. This leads not only to safety issues, but also reduces

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Toolchain for advanced modeling of rechargeable lithium-ion batteries

Battery electrical and thermal modeling is a fundamental task in understanding cell and system performance and degradation during the development of battery system for application. This is generally accomplished by i) cell and system test analysis and evaluation, ii) model selection, iii) parameterization, and iv) validation. In the frame of

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PCCM for Peak Thermal Load Shaving of LIB During 6C Fast Charge

Lithium-Ion Secondary Batteries (LIB) have a narrow operational window in terms of cell temperature. The optimum working temperature is between 15 and 45°C. Thus, modern battery systems for electric vehicles have complex active thermal management systems allowing for heating and cooling to operate the LIB in its desired temperature range.

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Experimental study on detecting and quantifying lithium-deposition with differential voltage analysis and coulomb-counting

High currents during fast charging of lithium-ion cells at elevated states of charge (SOC) induce undesired lithium deposition (LD), which leads to rapid loss of cyclable lithium and therewith an accelerated capacity fade. Furthermore, dendritic LD may penetrate the separator and can cause safety-critical conditions. Much research effort has been

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Electrochemical modeling, validation and parameter identification under high current discharge conditions for a commercial Li-ion battery.

Extreme scenarios of high discharge current must be understood for better battery management system design. Physics-based modeling can give a better insight into the battery response compared to equivalent circuit models but can be challenging due to the large number of parameters. In this work, an electrochemical pseudo-2D model is

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Calendric Ageing of 18650 Lithium-Ion Cells with Si/C Anode

Although the quality of Lithium-Ion Cells is improving tremendously over the years, the prediction of the lifetime of lithium-ion batteries is still a topic of interest. Economically the lifetime estimation is needed for guarantee issues and mitigating cost risks, when designing electric vehicles and storage applications. For electric vehicles driven

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