Novel thermal management system and PCM cooling is proposed for high power fast charging pile. Transient thermal analysis model is firstly given by introducing an enthalpy method. Beneficial effect of applying the PCM for the novel thermal management performance is evaluated at different charging conditions.
Charging module performance is evaluated under liquid cooling with or without PCM. When the charging module operates, the inductance module heats up, which results in a fast temperature rising. The PCM temperature on the contact surface of the charging module increases until it reaches the melting point temperature.
The typical cooling system for the high-power direct current EV charging pile available in the market is implemented by utilizing air cooling and liquid cooling. The heat removal rate of the air cooling scheme depends upon the airflow, fans, and heat sinks ( Saechan and Dhuchakallaya, 2022 ).
The heat power of the fast charging piles is recognized as a key factor for the efficient design of the thermal management system. At present, the typical high-power direct current EV charging pile available in the market is about 150 kW with a heat generation power from 60 W to 120 W ( Ye et al., 2021 ).
Sun et al. (2021) report the self-driven liquid metal cooling for higher power charging connectors. Results show significant decrease in the temperature rise for a high charging current can be given in the larger tube diameter. A lower temperature rise of 10.6 °C for the charging cable@1000A is obtained.
This study aims to control the fast charging module temperature rises by combining air cooling, liquid cooling, and PCM cooling. Based on the developed enthalpy method, a comparative analysis of the charging module’s temperature rise with and without the PCM demonstrates the beneficial effect of applying the PCM.
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CN215398238U
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Then the simulation model with high precision is built for ultra-fast charging, and a safe charging range under 5C charging is proposed. The safe charging range under 5C can be increased by 50.1%.
Transient thermal analysis of the thermal management of
This study aims to control the fast charging module temperature rises by combining air cooling, liquid cooling, and PCM cooling. Based on the developed enthalpy …