| dc.description.abstract | With the rise of environmental awareness, renewable energy will become one of the primary sources of energy in the future. Since renewable energy is not always available, energy storage systems play a crucial role in storing energy. Lithium-ion battery energy storage systems are widely utilized for this purpose. However, due to the demand for fast charging and discharging, the increased heat generated during fast discharging in lithium-ion batteries has made thermal management of lithium-ion battery modules a critical issue.
Among the current cooling methods, direct air cooling has the lowest cost. However, its main issue in the complexity of its flow channels, resulting in a larger pressure drop in the battery module and requiring more energy consumption for heat dissipation. In this study, we insert thermosiphon into the battery module to export the heat inside the battery module, reducing the pressure drop associated with air cooling.
Based on the experimental results, at a frontal air velocity of 1.97m/s, the direct air cooling module can maintain temperature below 60°C during 9C discharge, while the finned-tube module can achieve the same below 60°C during 11C discharge, increase of 1.2 times. When using the finned-tube module, the fan only needs 30.5Hz to dissipate heat during 9C discharge, the direct air cooling module requires 59.5Hz. Therefore, using the finned-tube module can reduce the energy consumption required for heat dissipation. | en_US |