Comparative Evaluation of Liquid Cooling-Based Battery Thermal Management Systems: Fin Cooling, PCM Cooling, and Intercell Cooling

Table 2

Physical and thermal properties of the materials used for the BTMS [14, 21, 34].

Item (unit)	Copper	Aluminum	PCM (n-eicosane)	EPDM	Water
Density (kg∙m^-3)	8,978	2,719	776	1,500	998.2
Specific heat, solid (J∙kg^-1∙K^-1)	381	871	2,150	1,900	—
Thermal conductivity, solid (W∙m^-1∙K^-1)	387.6	202.4	0.425	0.29	—
Specific heat, liquid (J∙kg^-1∙K^-1)	—	—	2,275	—	4,182
Thermal conductivity, liquid (W∙m^-1∙K^-1)	—	—	0.152	—	0.6
Melting temperature (°C)	—	—	36.1	—	—
Latent heat (J∙kg^-1)	—	—	247,050	—	—
Volume expansion coefficient	—	—	0.0009	—	—
Viscosity (kg∙m^-1∙s^-1)	—	—		—	0.001003