Visualization of electrolyte filling process and influence of vacuum during filling for hard case prismatic lithium ion cells by neutron imaging to optimize the production process

Journal article
(Original article)


Publication Details

Author(s): Weydanz WJ, Reisenweber H, Gottschalk A, Schulz M, Knoche T, Reinhart G, Masuch M, Franke J, Gilles R
Journal: Journal of Power Sources
Publication year: 2018
Volume: 380
Pages range: 126 - 134
ISSN: 0378-7753
Language: English


Abstract


Abstract The process of filling electrolyte into lithium ion cells is time consuming and critical to the overall battery quality. However, this process is not well understood. This is partially due to the fact, that it is hard to observe it in situ. A powerful tool for visualization of the process is neutron imaging. The filling and wetting process of the electrode stack can be clearly visualized in situ without destruction of the actual cell. The wetting of certain areas inside the electrode stack can clearly be seen when using this technique. Results showed that wetting of the electrode stack takes place in a mostly isotropic manner from the outside towards a center point of the cell at very similar speed. When the electrolyte reaches the center point, the wetting process can be considered complete. The electrode wetting is a slow but rather steady process for hard case prismatic cells. It starts with a certain speed, which is reduced over the progress of the wetting. Vacuum can assist the process and accelerate it by about a factor of two as was experimentally shown. This gives a considerable time and cost advantage for designing the production process for large-scale battery cell production.



FAU Authors / FAU Editors

Franke, Jörg Prof. Dr.-Ing.
Lehrstuhl für Fertigungsautomatisierung und Produktionssystematik
Masuch, Michael
Lehrstuhl für Fertigungsautomatisierung und Produktionssystematik


External institutions with authors

Forschungs-Neutronenquelle Heinz Maier-Leibnitz (FRM I / II)
Technische Universität München (TUM)


How to cite

APA:
Weydanz, W.J., Reisenweber, H., Gottschalk, A., Schulz, M., Knoche, T., Reinhart, G.,... Gilles, R. (2018). Visualization of electrolyte filling process and influence of vacuum during filling for hard case prismatic lithium ion cells by neutron imaging to optimize the production process. Journal of Power Sources, 380, 126 - 134. https://dx.doi.org/10.1016/j.jpowsour.2018.01.081

MLA:
Weydanz, Wolfgang J., et al. "Visualization of electrolyte filling process and influence of vacuum during filling for hard case prismatic lithium ion cells by neutron imaging to optimize the production process." Journal of Power Sources 380 (2018): 126 - 134.

BibTeX: 

Last updated on 2019-03-01 at 01:10