I am modeling a Li-ion NMC (Nickel-Manganese-Cobalt) 18650 battery cell with a graphite anode. In order to be able to model temperature increases when charging or discharging, I want to use an simple, first-order temperature model. For this however, I would need to obtain (at least) an estimation of the heat capacity of such a battery cell.
Would anyone have any idea where I can encounter this data?
Thank you very much!
Jonas
For a generic 18650 cell, it's around 950J/kgK , Ref here:
https://www.google.co.uk/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0ahUKEwiQsLib1PDYAhVJYo8KHWQfCscQFgguMAA&url=http%3A%2F%2Fdigitalcommons.calpoly.edu%2Ftheses%2F912%2F&usg=AOvVaw2dunV83rLpHrWU68iSsTPb
Regards,
Robert
For details:
http://www.inforlab-chimie.fr/doc/document_fichier_279.pdf
website:
http://www.thtuk.com
There is an experiment to determine the specific heat and heat capacity of 18650 battery pack, consisting of 12 ‘18650’ size
rechargeable lithium-ion batteries (18 mm in diameter, 65mm in height) over a temperature range in one
rapid test. The test was carried out over the temperature range of interest; 25°C to 55°C.
You see attached picture or file for more information.
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