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Batteries 2017, 3(1), 3; doi:10.3390/batteries3010003

Test Method for Thermal Characterization of Li-Ion Cells and Verification of Cooling Concepts

Institute for Development of Mechatronic Systems, NTB Interstate University of Applied Sciences of Technology, Werdenbergstrasse 4, CH-9471 Buchs, Switzerland
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Academic Editor: Carlos Ziebert
Received: 29 November 2016 / Revised: 18 January 2017 / Accepted: 19 January 2017 / Published: 26 January 2017
(This article belongs to the Special Issue Thermal Properties of Materials, Cells and Batteries)
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Abstract

Temperature gradients, thermal cycling and temperatures outside the optimal operation range can have a significant influence on the reliability and lifetime of Li-ion battery cells. Therefore, it is essential for the developer of large-scale battery systems to know the thermal characteristics, such as heat source location, heat capacity and thermal conductivity, of a single cell in order to design appropriate cooling measures. This paper describes an advanced test facility, which allows not only an estimation of the thermal properties of a battery cell, but also the verification of proposed cooling strategies in operation. To do this, an active measuring unit consisting of a temperature and heat flux density sensor and a Peltier element was developed. These temperature/heat flux sensing (THFS) units are uniformly arranged around a battery cell with a spatial resolution of 25 mm. Consequently, the temperature or heat flux density can be controlled individually, thus forming regions with constant temperature (cooling) or zero heat flux (insulation). This test setup covers the whole development loop from thermal characterization to the design and verification of the proposed cooling strategy. View Full-Text
Keywords: testing; cell characterization; thermal management; heat generation testing; cell characterization; thermal management; heat generation
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Christen, R.; Rizzo, G.; Gadola, A.; Stöck, M. Test Method for Thermal Characterization of Li-Ion Cells and Verification of Cooling Concepts. Batteries 2017, 3, 3.

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