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Numerical investigation of phase change material utilization options for the thermal management of cylindrical Li-Ion-batteries

: Gamisch, S.; Gschwander, S.

Fulltext urn:nbn:de:0011-n-5039469 (1.0 MByte PDF)
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Created on: 17.8.2018

Europäische Vereinigung für Erneuerbare Energien e.V. -EUROSOLAR-, Bonn; EnergieAgentur.NRW, Wuppertal:
11th International Renewable Energy Storage Conference, IRES 2017. Proceedings. CD-ROM : 14 to 16 March 2017, Düsseldorf; In Cooperation with Energy Storage Europe (conference & expo)
Bonn: EUROSOLAR, 2017
12 pp.
International Renewable Energy Storage Conference (IRES) <11, 2017, Düsseldorf>
Energy Storage Europe (ESE Conference & Expo) <6, 2017, Düsseldorf>
Conference Paper, Electronic Publication
Fraunhofer ISE ()
Thermische Systeme und Gebäudetechnik; parametric study; numerical simulation; phase change material; Gebäudeenergietechnik; Energiesystemtechnik; Batteriesysteme für stationäre und mobile Anwendungen; Wärme- und Kältespeicher

The long term stability of a Li-ion-battery suffers from excess temperature as well as from an inhomogeneous temperature distribution within a battery pack. A possibility to overcome these challenges is the utilization of phase change material (PCM) as thermal buffer. Due to the latent heat storage PCM offer the potential to keep cells within a narrow temperature range. In the present study three PCM integration options for the thermal management of battery modules containing 18650-type cylindrical Li-ion cell are compared. The PCM is either coupled to the terminals, the shell or to both. A parametric study is carried out to investigate the effect of the anisotropic thermal conductivity within the cell. Further the dissipated heat rate is varied. Independent of the anisotropic thermal conductivity of the cell mounting the PCM at the shell and terminals is the most beneficial for compensating the dissipated heat, especially for high load periods. Beyond the phase transition the PCM acts as insulator. Therefore regeneration periods are necessary.