Experimental Study on Phase Change Material Based Thermal Management Design with Adjustable Fins for Lithium-Ion Battery

•Thermal management using phase change material, fins and air cooling is proposed.•Experiments on its efficiency for battery are conducted at different temperatures.•Its passive PCM cooling well dissipates battery heat in mild thermal conditions.•Forced convection of liquid PCM and air protects battery from high-temperature harm.•The design fulfills diverse cooling needs of battery at various room temperatures.