Experimental study of battery passive thermal management system using copper foam-based phase change materials

Lithium-ion batteries (LiBs) have been widely applied in electric vehicles (EVs) and energy storage devices. The battery thermal management system (BTMS) critically impacts the safety degradation of LiBs. Phase change material (PCM) is a promising passive BTMS solution owing to its high latent heat non-parasitic power consumption requirements. In this paper, paraffin (PA) as PCM was embedded copper foam enhance dissipation cooling material. responses module were comparatively investigated under different solutions, including natural air, pure PCM, foam-PCM. A consisting 16 dummy cells (TDC) designed, built, calibrated replace real commercial 21,700 NMC cells. findings indicate that proposed foam-PCM effectively enhances improves temperature uniformity module. For instance, condition intensive operation (60% depth discharge 3C discharge), composite reduces maximum rise from 57.4 °C 51.4 (-10.4%) compared PCM. At ambient temperatures 25 35 °C, inhomogeneity with maintained within 5 2 respectively. Besides, effect on cell-to-pack conversion efficiency evaluated. gravimetric ratio (GCTP) volumetric (VCTP) pack employing reached 53.1% 45.6%,