TY - JOUR
T1 - Development of an all kapton-based thin-film thermocouple matrix for in situ temperature measurement in a lithium ion pouch cell
AU - Martiny, Nora
AU - Rheinfeld, Alexander
AU - Geder, Jan
AU - Wang, Yuxi
AU - Kraus, Werner
AU - Jossen, Andreas
PY - 2014/10
Y1 - 2014/10
N2 - Based on the design of a lithium ion battery cell and the resulting thermophysical properties, considerable temperature gradients may form within the cell not only during abusive scenarios. While the temperature gradients during normal operation are mostly negligible for small cells, which are commonly employed in mobile applications, the discrepancy between the temperature inside a battery cell and the cell's surface can be significant for larger scaled cells, which are employed, e.g., in automotive applications. Battery management systems that rely on a monitoring of the cell's surface temperature may consequently lead to an unfavorable operation of the whole battery in terms of aging and safety aspects. Thus, we hereby present an approach of designing, producing, and incorporating an all Kapton-based temperature sensor for an in situ temperature monitoring of lithium ion pouch cells. First prototypes are developed as a proof of concept when using a common potential for a thermocouple matrix that will later allow for a spatially resolved temperature monitoring within a lithium ion pouch cell. The interactions between the sensor and the cell are investigated and further design steps for improvements in functionality are elaborated.
AB - Based on the design of a lithium ion battery cell and the resulting thermophysical properties, considerable temperature gradients may form within the cell not only during abusive scenarios. While the temperature gradients during normal operation are mostly negligible for small cells, which are commonly employed in mobile applications, the discrepancy between the temperature inside a battery cell and the cell's surface can be significant for larger scaled cells, which are employed, e.g., in automotive applications. Battery management systems that rely on a monitoring of the cell's surface temperature may consequently lead to an unfavorable operation of the whole battery in terms of aging and safety aspects. Thus, we hereby present an approach of designing, producing, and incorporating an all Kapton-based temperature sensor for an in situ temperature monitoring of lithium ion pouch cells. First prototypes are developed as a proof of concept when using a common potential for a thermocouple matrix that will later allow for a spatially resolved temperature monitoring within a lithium ion pouch cell. The interactions between the sensor and the cell are investigated and further design steps for improvements in functionality are elaborated.
KW - Kapton
KW - Lithium ion batteries
KW - common potential
KW - in-situ
KW - pouch cell
KW - sensor matrix
KW - temperature monitoring,thin-film
KW - temperature sensor
KW - thermocouple
UR - http://www.scopus.com/inward/record.url?scp=84906662201&partnerID=8YFLogxK
U2 - 10.1109/JSEN.2014.2331996
DO - 10.1109/JSEN.2014.2331996
M3 - Article
AN - SCOPUS:84906662201
SN - 1530-437X
VL - 14
SP - 3377
EP - 3384
JO - IEEE Sensors Journal
JF - IEEE Sensors Journal
IS - 10
M1 - 6840303
ER -