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Lithium-Ion Batteries: Latest Advances and Prospects
Article

Key Figure Based Incoming Inspection of Lithium-Ion Battery Cells

1
elenia Institute for High Voltage Technology and Power Systems, Technische Universität Braunschweig, Schleinitzstraße 23, 38106 Braunschweig, Germany
2
Battery LabFactory Braunschweig, Technische Universität Braunschweig, Langer Kamp 19, 38106 Braunschweig, Germany
3
Physikalisch-Technische Bundesanstalt, National Metrology Institute of Germany, Bundesallee 100, 38116 Braunschweig, Germany
*
Author to whom correspondence should be addressed.
Received: 5 November 2020 / Revised: 15 January 2021 / Accepted: 20 January 2021 / Published: 26 January 2021
(This article belongs to the Special Issue Lithium-Ion Batteries: Latest Advances and Prospects II)
The cell characterization in the incoming inspection is an important but time and cost intensive process step. In order to obtain reliable parameters to evaluate and classify the cells, it is essential to design the test procedures in such a way that the parameters derived from the data allow the required statements about the cells. Before the focus is placed on the evaluation of cell properties, it is therefore necessary to design the test procedures appropriately. In the scope of the investigations two differently designed incoming inspection routines were carried out on 230 commercial lithium-ion battery cells (LIBs) with the aim of deriving recommendations for optimal test procedures. The derived parameters of the test strategies were compared and statistically evaluated. Subsequently, key figures for the classification were identified. As a conclusion, the capacity was confirmed as an already known important parameter and the average cell voltage was identified as a possibility to replace the usually used internal resistance. With regard to capacity, the integration of CV steps in the discharging processes enables the determination independently from the C-rate. For the average voltage cycles with high C-rates are particularly meaningful because of the significant higher scattering due to the overvoltage parts. View Full-Text
Keywords: lithium-ion batteries; automotive pouch cells; cell characterization; classification; incoming inspection lithium-ion batteries; automotive pouch cells; cell characterization; classification; incoming inspection
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MDPI and ACS Style

Ryll, K.; Hoffmann, L.; Landrath, O.; Lienesch, F.; Kurrat, M. Key Figure Based Incoming Inspection of Lithium-Ion Battery Cells. Batteries 2021, 7, 9. https://0-doi-org.brum.beds.ac.uk/10.3390/batteries7010009

AMA Style

Ryll K, Hoffmann L, Landrath O, Lienesch F, Kurrat M. Key Figure Based Incoming Inspection of Lithium-Ion Battery Cells. Batteries. 2021; 7(1):9. https://0-doi-org.brum.beds.ac.uk/10.3390/batteries7010009

Chicago/Turabian Style

Ryll, Kerstin, Louisa Hoffmann, Oliver Landrath, Frank Lienesch, and Michael Kurrat. 2021. "Key Figure Based Incoming Inspection of Lithium-Ion Battery Cells" Batteries 7, no. 1: 9. https://0-doi-org.brum.beds.ac.uk/10.3390/batteries7010009

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