Numerical Analysis on Cooling Performances for Connectors Using Immersion Cooling in Ultra-Fast Chargers for Electric Vehicles DOI Open Access

Seong-Guk Hwang,

Moo‐Yeon Lee,

B.D. Ko

et al.

Symmetry, Journal Year: 2025, Volume and Issue: 17(4), P. 624 - 624

Published: April 20, 2025

The increasing demand for ultra-fast charging in electric vehicles (EVs) necessitates advancements thermal management strategies to mitigate Joule heating, which arises due electrical resistance connectors and cable cores. This study presents a numerical analysis of immersion cooling performance chargers under realistic conditions. simulated results are validated by experiments with maximum deviation 5.5% at 600 A 700 currents. novelty this work lies the consideration length 5 m, evaluation temperature characteristics charger connector, geometric symmetry coolant configuration ensure uniform heat distribution. Key operating conditions were systematically analyzed, including applied currents, ambient temperatures, flow rates, core cross-sectional areas, different types coolants. Results indicate that current from 400 800 raised connector 60.73 °C 97.33 °C. As increased 20 50 °C, rose significantly 42.71 74.99 while 65.26 100.61 Increasing area mm2 30 reduced 77.20 Meanwhile, rate 2 LPM had negligible effect on temperature. Among three tested coolants, Novec 7500 exhibited highest efficiency, achieving lowest contact (74.76 °C) criteria (PEC) value 3.8. provides valuable guidelines enhancing symmetry-driven systems demonstrates potential improve safety, operational reliability next-generation high-power EV chargers.

Language: Английский

Numerical Analysis on Cooling Performances for Connectors Using Immersion Cooling in Ultra-Fast Chargers for Electric Vehicles DOI Open Access

Seong-Guk Hwang,

Moo‐Yeon Lee,

B.D. Ko

et al.

Symmetry, Journal Year: 2025, Volume and Issue: 17(4), P. 624 - 624

Published: April 20, 2025

The increasing demand for ultra-fast charging in electric vehicles (EVs) necessitates advancements thermal management strategies to mitigate Joule heating, which arises due electrical resistance connectors and cable cores. This study presents a numerical analysis of immersion cooling performance chargers under realistic conditions. simulated results are validated by experiments with maximum deviation 5.5% at 600 A 700 currents. novelty this work lies the consideration length 5 m, evaluation temperature characteristics charger connector, geometric symmetry coolant configuration ensure uniform heat distribution. Key operating conditions were systematically analyzed, including applied currents, ambient temperatures, flow rates, core cross-sectional areas, different types coolants. Results indicate that current from 400 800 raised connector 60.73 °C 97.33 °C. As increased 20 50 °C, rose significantly 42.71 74.99 while 65.26 100.61 Increasing area mm2 30 reduced 77.20 Meanwhile, rate 2 LPM had negligible effect on temperature. Among three tested coolants, Novec 7500 exhibited highest efficiency, achieving lowest contact (74.76 °C) criteria (PEC) value 3.8. provides valuable guidelines enhancing symmetry-driven systems demonstrates potential improve safety, operational reliability next-generation high-power EV chargers.

Language: Английский

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