Temperature Monitoring of Lithium-Ion Cells with Printed Sensors for Automotive Battery Packs

Konferenz: Sensoren und Messsysteme - 19. ITG/GMA-Fachtagung
26.06.2018 - 27.06.2018 in Nürnberg, Deutschland

Tagungsband: ITG-Fb. 281: Sensoren und Messsysteme

Seiten: 4Sprache: EnglischTyp: PDF

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Autoren:
Reimers, Marcel; Lang, Walter; Dumstorff, Gerrit (Institute for Microsensors, -actuators and -systems (IMSAS), University of Bremen, Bremen, Germany)

Inhalt:
We present a printed temperature sensor for state of health measurement of an automotive battery. The sensor is printed on a PCB close to the cylindrical lithium-ion battery and the battery connection. With our solution, the temperature is detected more precise than conventional placed temperature sensors. A real-time temperature measurement during discharging is compared with a NTC placed on the battery connection for validation of a precise temperature measurement. This improves the safety, aging and temperature range of the battery. A cost-efficient screen-printed sensor with a good TCR was found and placed in an automotive lithium-ion battery pack.