A cost and time effective novel methodology to determine specific heat capacity of lithium-ion cells
Journal article, 2021

A cost and time-effective novel method for determining the specific heat capacity of prismatic and pouch lithium-ion cells using a simple setup and easily available equipment is presented in this paper. Specific heat capacity is an important thermal parameter of lithium-ion cells which is not readily available or provided by the cell manufacturers. The results found in this work are compared with the calorimetrically determined values of the specific heat capacity and a maximum error of 5% and 1.4% have been found for the pouch and the prismatic cells, respectively. The minimum error in the specific heat capacity for the pouch and the prismatic cells are 0.7% and 0.1%, respectively. The thermal parameters obtained using this methodology have been used to model the surface temperature of a prismatic cell during the application of a dynamic pulsed power as well as New European Driving Cycle (NEDC) and Worldwide harmonized Light vehicles Test Cycle (WLTC) drive cycles-based power traces. The excellent matching of the measured and simulated cell's surface temperature during both the NEDC and WLTC drive cycles demonstrates that the thermal parameters determined using this new method can be used to model the surface temperature of the cell.

Specific heat capacity

Cost effective method

Time effective method

Lithium-ion cell

Thermal modeling

Author

Shrisha Balkur

Student at Chalmers

Niladri Roy Chowdhury

Chalmers, Electrical Engineering, Electric Power Engineering, Electrical Machines and Power Electronics

Jens Groot

Volvo Group

Torbjörn Thiringer

Chalmers, Electrical Engineering, Electric Power Engineering, Electrical Machines and Power Electronics

Journal of Power Sources

0378-7753 (ISSN)

Vol. 500 229981

Ageing of Lithium-ion Batteries with Nickel-Rich Cathodes for Electromobility (ALINE)

Swedish Energy Agency (45538-1), 2019-01-01 -- 2022-12-31.

Areas of Advance

Transport

Subject Categories

Energy Engineering

Other Chemical Engineering

Other Physics Topics

DOI

10.1016/j.jpowsour.2021.229981

More information

Latest update

6/24/2021