Numerical Investigation of Novel Cylindrical Lithium-Ion Battery Pack Mini-Channel Cooling Plate

Lithium-ion batteries find extensive use in electric vehicles (EVs), and their performance heavily relies on temperature control. Sustaining a lithium-ion battery pack's optimal temperature, which depends heavily on the BTMS, ensures enhanced performance, extended lifespan, and safety. While liquid cooling has been the subject of extensive research for prismatic cells, limited work is in the field of utilization for cylindrical cells (round and hollow cells). To assess how flow velocity, specifically the Reynolds number, affects the distribution of temperature and pressure within the system during 3C and 4C discharge rates, CFD analysis is conducted on a 3D model of the battery pack. The research reveals that the flow directions within the mini-channels enhance thermal efficiency. These results offer knowledge on improving thermal performance and preserving temperature uniformity, which is useful in the design and enhancement of cylindrical battery cells liquid cooling and thermal management systems.