Thermal management for lithium-ion battery energy storage system
Liu, Jingyuan (2026)
Kandidaatintyö
2026
School of Energy Systems, Energiatekniikka
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi-fe2026052553626
https://urn.fi/URN:NBN:fi-fe2026052553626
Tiivistelmä
Lithium-ion battery energy storage is widely used in renewable energy integration, grid regulation, microgrids, electric vehicles and backup power applications because of its high energy density, high efficiency, long lifespan and rapid response capability. However, heat generated during charging and discharging can cause excessive temperature rise, uneven temperature distribution, capacity degradation and thermal runaway risk if it is not effectively removed.
Therefore, this thesis mainly looks at single-phase immersion cooling for lithium-ion battery energy storage systems. It compares different coolants, flow speeds, and battery spacings to see how they affect cooling performance and temperature uniformity. It compares how coolant type, flow speed, and battery spacing affect cooling performance. Direct coolant contact improves heat removal and temperature uniformity. Effective thermal control can reduce peak battery temperature and cell temperature differences, thereby improving system safety, stability and operating performance.
Therefore, this thesis mainly looks at single-phase immersion cooling for lithium-ion battery energy storage systems. It compares different coolants, flow speeds, and battery spacings to see how they affect cooling performance and temperature uniformity. It compares how coolant type, flow speed, and battery spacing affect cooling performance. Direct coolant contact improves heat removal and temperature uniformity. Effective thermal control can reduce peak battery temperature and cell temperature differences, thereby improving system safety, stability and operating performance.