Research and Demonstration Center for the Production of Large-Area Lithium-Ion Cells

Reinhart, Gunther; Zeilinger, Tobias; Kurfer, Jakob; Westermeier, Markus; Thiemann, C.; Glonegger, M.; Wunderer, M.; Tammer, Christoph; Schweier, M.; Heinz, Merrill

doi:10.1007/978-3-642-24491-9_1

Cited by 29 publications

(29 citation statements)

References 4 publications

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“…The electrodes were compacted using different calenders to investigate the differences in machine behavior (see Table ). In the pilot line at the Institute for Machine Tools and Industrial Management (iwb) at the Technical University of Munich (TUM), the model EA 102 from Coatema Coating Machinery GmbH (calender 1) was used . The same machine was used for investigations concerning electrode defects .…”

Section: Methodsmentioning

confidence: 99%

Modelling of the Calendering Process of NMC‐622 Cathodes in Battery Production Analyzing Machine/Material–Process–Structure Correlations

et al. 2019

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The shift in the transport sector from internal combustion engines to battery‐powered electric vehicles and the continued demand for portable applications increases the need for batteries in the coming years. To optimize battery technologies, it is essential to fully understand the production process and the associated parameters as well as their influence on the chemical processes within the cell. At the Institute for Machine Tools and Industrial Management (iwb), extensive knowledge of the calendering process is gathered including the investigation of the displacement behavior for both the calender rolls and the bearing, as well as the adhesion strength. The process parameters such as roll temperature and velocity, structure parameters (e. g., coating thickness, adhesion strength), and machine behavior parameters (displacement and bending line) are investigated using three calender models. The achieved porosities are verified via porosity consistency measurements. Based on the collected data, qualitative machine/material–process–structure models are built up. Scanning electron microscopy (SEM) and light microscopy support the relations made. In addition, a connection between vertical displacement and line load is established.

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Section: Methodsmentioning

confidence: 99%

Modelling of the Calendering Process of NMC‐622 Cathodes in Battery Production Analyzing Machine/Material–Process–Structure Correlations

et al. 2019

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“…The attenuation through titanium and aluminum foils of known measured thickness (14 µm for aluminium and 20 µm for titanium) has firstly been measured using equation (3) and measurements of I and I0 from radiographs such as those shown in Fig 1 . µ was found to be equal to 0.0023µm -1 for Ti and 0.00043µm -1 for Al.…”

Section: Equivalent Photon Energy and Attenuation Coefficientsmentioning

confidence: 99%

“…a low thickness deviation). The coating method and the slurry properties are the main factors playing a role on process efficiency [3]. Also, appropriate slurry rheological characteristics, density, porosity, viscosity, adhesion have to be optimized [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Quality control tool of electrode coating for lithium-ion batteries based on X-ray radiography

Etiemble

Besnard

Adrien

et al. 2015

Journal of Power Sources

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“…Cell level joining: The fabrication of prismatic cells involves similar joining operations to cylindrical and pouch cells (i) between current collector tabs and electrode foil(s), (ii) between collector tab and battery terminal, and (iii) case sealing. Ultrasonic welding is most commonly used for joining current collector tabs with electrode foil(s) [31]. Resistance spot welding is used to connect current collector tabs with the case or with the top cap of the case [27].…”

Section: Joining Of Prismatic Cell Based Battery Packmentioning

confidence: 99%

“…Cell level joining: During fabrication of pouch cells, the joining operations are (i) electrode current collectors to positive and negative terminal tabs, and (ii) case sealing of pouch cell-an automated and standard process under vacuum [31]. Electrode-to-tab welds are conventionally made using ultrasonic technology because of the need to create a joint through a stack of foils.…”

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confidence: 99%

Joining Technologies for Automotive Battery Systems Manufacturing

Das

Williams

et al. 2018

WEVJ

185

105

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An automotive battery pack for use in electric vehicles consists of a large number of individual battery cells that are structurally held and electrically connected. Making the required electrical and structural joints represents several challenges, including, joining of multiple and thin highly conductive/reflective materials of varying thicknesses, potential damage (thermal, mechanical, or vibrational) during joining, a high joint durability requirement, and so on. This paper reviews the applicability of major and emerging joining techniques to support the wide range of joining requirements that exist during battery pack manufacturing. It identifies the advantages, disadvantages, limitations, and concerns of the joining technologies. The maturity and application potential of current joining technologies are mapped with respect to manufacturing readiness levels (MRLs). Further, a Pugh matrix is used to evaluate suitable joining candidates for cylindrical, pouch, and prismatic cells by addressing the aforementioned challenges. Combining Pugh matrix scores, MRLs, and application domains, this paper identifies the potential direction of automotive battery pack joining.

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Research and Demonstration Center for the Production of Large-Area Lithium-Ion Cells

Cited by 29 publications

References 4 publications

Modelling of the Calendering Process of NMC‐622 Cathodes in Battery Production Analyzing Machine/Material–Process–Structure Correlations

Modelling of the Calendering Process of NMC‐622 Cathodes in Battery Production Analyzing Machine/Material–Process–Structure Correlations

Quality control tool of electrode coating for lithium-ion batteries based on X-ray radiography

Joining Technologies for Automotive Battery Systems Manufacturing

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