This study investigates phase change materials(PCMs)for lithium battery thermal management.A PCM cooling model was developed and experimentally validated,showing≤1.5 K temperature error and≤5%PCM melting simulation ...This study investigates phase change materials(PCMs)for lithium battery thermal management.A PCM cooling model was developed and experimentally validated,showing≤1.5 K temperature error and≤5%PCM melting simulation deviation.A non-uniform battery arrangement was proposed to optimize temperature distribution.Key PCM parameters(melting point,conductivity,latent heat)were analyzed for thermal performance.A hybrid liquid-PCM cooling system was designed and optimized via an entropy-weighted TOPSIS-NSWOA strategy.At 4 C discharge,the optimized system achieved 311.41 K maximum temperature(5.89 K reduction)and 4.71 K temperature difference,meeting 18650 battery safety standards.The findings guide PCM selection and integrated thermal management design,balancing heat dissipation and temperature uniformity.展开更多
文摘This study investigates phase change materials(PCMs)for lithium battery thermal management.A PCM cooling model was developed and experimentally validated,showing≤1.5 K temperature error and≤5%PCM melting simulation deviation.A non-uniform battery arrangement was proposed to optimize temperature distribution.Key PCM parameters(melting point,conductivity,latent heat)were analyzed for thermal performance.A hybrid liquid-PCM cooling system was designed and optimized via an entropy-weighted TOPSIS-NSWOA strategy.At 4 C discharge,the optimized system achieved 311.41 K maximum temperature(5.89 K reduction)and 4.71 K temperature difference,meeting 18650 battery safety standards.The findings guide PCM selection and integrated thermal management design,balancing heat dissipation and temperature uniformity.
