Lithium-ion batteries are currently considered to be the most promising advanced battery technology for electric vehicles that require high energy capacity. A lot of research and development activities have been focused on their development to achieve efficient mass production capabilities and to successfully commercialize the technology. This paper discusses the laser cutting process for coated anode/cathode and uncoated copper/aluminum tabs for both cylindrical and prismatic Li-ion cell designs. A number of different cutting strategies have been investigated using IR (fiber/disc) and UV laser sources in pulsed/cw configurations. An in-depth development study has been performed to understand the effect of different processing parameters on the maximum cutting speed, cut edge quality and overall energy efficiency of the process. Results show that excellent cut quality can be achieved using optimal processing parameters with cutting speeds ranging from several m/min up to 300 m/min depending on the processing requirements and the corresponding cutting approach.
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ICALEO 2012: 31st International Congress on Laser Materials Processing, Laser Microprocessing and Nanomanufacturing
September 23–27, 2012
Anaheim, California, USA
ISBN:
978-0-912035-96-3
PROCEEDINGS PAPER
Investigation of different laser cutting strategies for sizing of Li-ion battery electrodes Available to Purchase
Rahul Patwa;
Rahul Patwa
1
Fraunhofer Center for Laser Technology
, 46025 Port Street, Plymouth, 48170, MI
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Hans Herfurth;
Hans Herfurth
1
Fraunhofer Center for Laser Technology
, 46025 Port Street, Plymouth, 48170, MI
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Stefan Heinemann;
Stefan Heinemann
1
Fraunhofer Center for Laser Technology
, 46025 Port Street, Plymouth, 48170, MI
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Jyoti Mazumder;
Jyoti Mazumder
2
The University of Michigan, College of Engineering
, Ann Arbor, MI
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Dongkyoung Lee
Dongkyoung Lee
2
The University of Michigan, College of Engineering
, Ann Arbor, MI
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Published Online:
September 01 2012
Citation
Rahul Patwa, Hans Herfurth, Stefan Heinemann, Jyoti Mazumder, Dongkyoung Lee; September 23–27, 2012. "Investigation of different laser cutting strategies for sizing of Li-ion battery electrodes." Proceedings of the ICALEO 2012: 31st International Congress on Laser Materials Processing, Laser Microprocessing and Nanomanufacturing. ICALEO 2012: 31st International Congress on Laser Materials Processing, Laser Microprocessing and Nanomanufacturing. Anaheim, California, USA. (pp. pp. 908-914). ASME. https://doi.org/10.2351/1.5062562
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