P3-054
A database of test vectors with simulated real-world driving was created within a pre-competitive working group, supported by Consortium for Battery Innovation (CBI). Its purpose is the validation of algorithms for performance prediction of the 12V PbA battery in vehicles for safety-relevant profiles (Safety State-of-Function, SSoF). Here, a small subset was analyzed for parameter changes […]
P2-062
Water and hydrofluoric acid cause the electrolyte to decompose, and as the water content in the electrolyte increases, the SEI layer becomes thicker and rich in lithium carbonate. This affects the battery with increased battery resistance, safety problems and loss of capacity. Therefore, limit values of 20 ppm for water and 50 ppm for HF […]
P2-042_Buch
Kems4Bats, a research group funded by the BMBF’s NanoMatFutur program at Hochschule Mannheim, applies well-established experimental techniques to analyze thermal and gas emissions in lithium-ion batteries. Working in a state-of-the-art laboratory outfitted with high-precision equipment, the team investigates how electrode composition and particle size variations affect diffusion processes and gas production. Core research areas include […]
P5-047_Mueller
Will be delivered soon.
P1-059
The economic viability of vanadium flow batteries (VFBs) depends on maintaining optimal power output and energy capacity throughout their lifespan. A key factor in achieving this is the precise monitoring of the electrolyte-specific state of charge (SoC). This work presents a novel open-circuit-potential (OCP) cell designed for real-time, cost-effective, and reliable SoC monitoring in VFBs. […]
P1-067
The quick characterization of materials plays an important role in both the development of new compounds as well as in quality control purposes. Therefore, it can be critical to be able to evaluate materials on the base level way before they have even been electrochemically tested. Electrical conductivity is the most obvious property that needs […]
P1-067
The quick characterization of materials plays an important role in both the development of new compounds as well as in quality control purposes. Therefore, it can be critical to be able to evaluate materials on the base level way before they have even been electrochemically tested. Electrical conductivity is the most obvious property that needs […]
P5-036
Lithium plating is a safety and performance concern in lithium-ion cells. This study investigates the effects of temperature and charging current rate on lithium plating, aiming to develop an index to assess a cell’s susceptibility to plating. A quick electrical test was designed to induce lithium plating under varying conditions. For this, a constant temperature […]
P2-040
Lithium-ion batteries in battery-electric vehicles must balance charging speed, degradation, and safety to ensure optimal performance. High charging speeds can lead to lithium plating, resulting in lithium inventory loss, solid electrolyte interphase (SEI) build-up, and dendrite formation. These phenomena contribute to capacity reduction, increased resistance, and potential safety risks. Controlling the charging current based on […]
P3-062
The increasing demand for electric mobility underscores the need for precise and efficient battery diagnostics, particularly within Battery Management Systems (BMS) that monitor important parameters such as State of Charge (SoC) and State of Health (SoH). Conventional methods like Coulomb Counting and Open-Circuit Voltage measurements provide limited precision and fail to capture the underlying chemical […]