In this study, numerical models of an active thermal management system (TMS) using a two-phase refrigerant and a passive TMS using phase change material (PCM) for lithium ion batteries in electric vehicles (EVs) and hybrid electric vehicles (HEVs) are developed. The models are validated by comparing the predictions with the measured data. The effects of the refrigerant temperature and mass flow rate on the cooling performance of the refrigerant-cooled active TMS are analyzed. Moreover, the cooling performance characteristics of the refrigerant-cooled active and PCM-based passive TMSs are compared under various single discharge and cyclic operating conditions. The passive and active TMSs show excellent performances under mild and stressful operating conditions where discharge occurs. However, in the cyclic operation where charge and discharge are merged, the refrigerant-cooled active TMS shows better cooling performance than the PCM-based passive TMS.
|Number of pages||11|
|Journal||International Journal of Heat and Mass Transfer|
|Publication status||Published - 2019 Jun|
Bibliographical noteFunding Information:
This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry and Energy (MOTIE) of the Republic of Korea (No. 20173010013220).
© 2019 Elsevier Ltd
- Cooling performance
- Lithium ion battery
- PCM-based passive TMS
- Refrigerant-cooled active TMS
- Thermal management system
ASJC Scopus subject areas
- Condensed Matter Physics
- Mechanical Engineering
- Fluid Flow and Transfer Processes