Determination of the Time Dependent Parasitic Heat Flow in Lithium Ion Cells Using Isothermal Microcalorimetry

2014 ◽  
Vol 118 (51) ◽  
pp. 29533-29541 ◽  
Author(s):  
L. E. Downie ◽  
S. R. Hyatt ◽  
A. T. B. Wright ◽  
J. R. Dahn
Keyword(s):  
Heat Flow ◽  
Lithium Ion ◽  
Time Dependent ◽  
Isothermal Microcalorimetry ◽  
Lithium Ion Cells

Low-effort determination of heat capacity and thermal conductivity for cylindrical 18650 and 21700 lithium-ion cells

2021 ◽  
Vol 42 ◽  
pp. 103065
Author(s):  
Marco Steinhardt ◽  
Elisabeth Irene Gillich ◽  
Alexander Rheinfeld ◽  
Ludwig Kraft ◽  
Markus Spielbauer ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Heat Capacity ◽  
Lithium Ion ◽  
Lithium Ion Cells

Determining Parasitic Reaction Enthalpies in Lithium-Ion Cells Using Isothermal Microcalorimetry

2018 ◽  
Vol 165 (14) ◽  
pp. A3449-A3458 ◽  
Author(s):  
S. L. Glazier ◽  
S. A. Odom ◽  
A. P. Kaur ◽  
J. R. Dahn
Keyword(s):  
Lithium Ion ◽  
Isothermal Microcalorimetry ◽  
Lithium Ion Cells ◽  
Parasitic Reaction

scholarly journals Algorithm to Determine the Knee Point on Capacity Fade Curves of Lithium-Ion Cells

Energies ◽  
2019 ◽  
Vol 12 (15) ◽  
pp. 2910 ◽  
Author(s):  
Weiping Diao ◽  
Saurabh Saxena ◽  
Bongtae Han ◽  
Michael Pecht
Keyword(s):  
Lithium Ion ◽  
Storage Conditions ◽  
Capacity Fade ◽  
Lithium Ion Cells ◽  
Knee Point ◽  
Extended Charge ◽  
Definition Of ◽  
And Storage ◽  
Charge Discharge

Lithium-ion batteries typically exhibit a transition to a more rapid capacity fade trend when subjected to extended charge–discharge cycles and storage conditions. The identification of the knee point can be valuable to identify the more severe degradation trend, and to provide guidance when scheduling battery replacements and planning secondary uses of the battery. However, a concise and repeatable determination of a knee point has not been documented. This paper provides a definition of the knee point which can be used as a degradation metric, and develops an algorithm to identify it. The algorithm is implemented on various data cases, and the results indicate that the approach provides repeatable knee point identification.

Sign in / Sign up

Export Citation Format

Share Document