Journal
APPLIED THERMAL ENGINEERING
Volume 184, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.applthermaleng.2020.116380
Keywords
Hybrid battery thermal management system; Thermal runaway; Phase change material; Liquid cooling
Funding
- Zhejiang Natural Science Foundation [LY18E050024]
- National Natural Science Foundation of China [51909037]
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This paper introduces a novel hybrid battery thermal management system based on phase change material (PCM) and liquid cooling, which utilizes PCM for maintaining operating temperature of the battery and liquid cooling system for preventing thermal runaway propagation. Numerical analysis shows that the system can meet heat dissipation demand under extreme operating conditions.
In order to maintain the proper operating temperature and avoid thermal runaway propagation of lithium-ion power battery module, this paper proposes a novel hybrid battery thermal management system based on phase change material (PCM) and liquid cooling. In the proposed system, the operating temperature of the battery is maintained mainly by latent heat of PCM. In the case of thermal runaway condition, PCM acts as a heat buffer, and the heat dissipates through the liquid cooling system to avoid the thermal runaway propagation. The heat transfer model and the thermal runaway model are established and then verified. The performance of system is numerically analyzed under extreme operating and thermal abuse conditions. The results show that the proposed system combines the advantages of PCM and liquid thermal management schemes, which can fully meet the heat dissipation demand under extreme operating conditions. The high thermal conductivity of PCM is beneficial to the reduction of battery temperature but may cause thermal runaway propagation. The proposed system also have good heat dissipation capacity in avoiding the thermal runaway by optimizing some parameters, such as thethermal conductivity of PCM and water velocity.
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