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Hybrid Thermal Management System for Prismatic Lithium-Ion Batteries Based on Alternating Inlet Flow and Simplified Porous-Structured Fins
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DOI：10.1002/ente.70552.png)
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Abstract
En 中文
This study introduces a hybrid battery thermal management system (BTMS) for prismatic lithium-ion batteries, combining a semi-enclosed liquid cooling plate (S-ELCP) with alternating inlet channels and simplified porous-structured fins (SPSF). Validated via experimental electrochemical-thermal modeling under a 3C discharge rate, the system simultaneously optimizes heat dissipation, temperature uniformity, and hydraulic efficiency. Findings indicate the alternating inlet strategy reduces Inlet-outlet pressure drop (ΔP) by 76.9% and significantly improves temperature distribution over single-inlet baselines. Furthermore, the continuous thermal pathways of the SPSF1 topology provide superior heat removal compared to SPSF2. Parametric optimization reveals that a 0.25 g·s−1 coolant flow rate and 70.56% fin porosity achieve the ideal balance between thermal conduction and latent heat storage. Under these optimal conditions, the maximum temperature (Tmax) is restricted to 310.65 K and the maximum temperature difference (ΔTmax) to 3.48 K—reductions of 5.72 and 5.41 K versus conventional designs—while maintaining a low ΔP of 94.98 Pa. This configuration ensures highly efficient, energy-saving thermal regulation within a compact footprint.
Keywords:
battery thermal management system
fin structure
Li-ion battery
liquid cooling
phase change material
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