P3-012
Degradation Mode Analysis (DMA) is increasing in popularity as a tool for diagnosing the state-of-health (SOH) of a cell in more detail than capacity-based methods. Assuming degradation modes can define the cell state, error quantification for DMA methods is usually done with datasets generated from known degradation mode combinations [1, 2]. This work instead uses […]
P5-061
Li-ion batteries have become an integral part of modern technology in recent decades, particularly in mobile devices and the automotive industry. The demand for higher energy density per unit of weight or volume has led to considerable progress in recent years. At the same time, various innovations in battery shape, size and electrochemistry have been […]
P3-020
Over the past three decades, the energy density of lithium-ion batteries (LIB) has steadily increased to meet the growing demand for portable energy storage. This increase in energy density has made LIBs a potential safety hazard. In the worst-case scenario, uncontrolled heating in a LIB, known as thermal runaway, can result in serious damage or […]
P3-041
The continued electrification of the automotive sector is bringing the challenges of battery electric vehicles (BEVs) into focus, particularly in terms of fast charging capability, safety aspects and range. High-energy cells offer potential solutions to these challenges, but are associated with reduced thermal stability, which increases the risk of thermal runaway (TR) and thermal propagation […]
P5-060
Lithium plating is a key degradation mechanism which results from operating in cold temperatures (or high C-rates) and can ultimately contribute to catastrophic failure of lithium-ion batteries via short circuit. Predicting the onset of Li plating via non-invasive methods could allow for BMS’s to modify cell operating conditions to minimise cell degradation and extend cell […]
P1-022
LiNiO2 (LNO) is one of the most assuring substitutes to LiCoO2 in Li ion batteries (LIBs). Research is underway to improve the cycle life of LNO for its commercial use. This investigation involves the doping of Molybdenum (Mo), Niobium (Nb) and Zirconium (Zr) in lithium nickel oxide (LNO), marked difference in primary particle size morphology […]
074
The integration of advanced battery technologies is crucial for the success of More Electric Aircraft (MEA), enabling network stability and high-power supply for electrified aviation propulsion. This paper presents a novel adaptive battery protection circuit with self-controlled precharge for versatile load management. The circuit ensures the safe operating area (SOA) of battery cells under all […]
P2-023_Kiel
High-voltage batteries consist of a network of individual battery cells, where the number of series-connected cells is significantly larger than the number of parallel-connected cells (s>>p). Understanding and controlling the short-circuit behavior of such systems is crucial for designing safe and efficient high-voltage battery pack systems. Applications aiming for operating voltages above 1500V may, depending […]
P5-008
To produce battery cells ever more cheaply, the production processes must be optimised continuously. With a throughput of 0.6 to 0.7 GWh/a per electrolyte filling system, the process is a bottleneck in cell assembly and must be highly parallelized to keep up with the throughput of a gigafactory. Additionally, electrolyte filling is decisive for the […]
P5-024
The lithium sulfur (Li-S) cell chemistry is promising due to the high specific capacity of its active materials resulting in high specific energy cells. Consequently, this battery type is notably suitable for lightweight applications such as aviation. Sulfurized polyacrylonitrile (SPAN) is one of the currently highly prominent materials offering the advantages of the active material […]