Full
Outline
To overcome the shortcomings of phase change materials (PCM) such as a low coefficient of heat conductivity, a novel axial extended corrugated fin is designed to improve the heat dissipation performance of lithium-ion batteries. Subsequently, the effects of the types of fins, convective heat transfer coefficient, number of fins, extended fin length and ambient temperature on the heat dissipation performance of batteries are studied by simulations using computational fluid dynamics (CFD). Results demonstrate that the introduction of corrugated fins can improve the heat dissipation performance of lithium-ion batteries. Compared with the traditional trapezoidal fins, the corrugated fins can further reduce the maximum temperature of batteries by 1.7 °C. In addition, the heat dissipation performance of batteries is improved by increasing the heat transfer coefficient, as well as the number and extended length of fins. With a trade-off between the cooling performance of the heat dissipation model and its weight, the maximum temperature and temperature difference of the lithium-ion battery are 39.9 °C and 4 °C respectively when the convective heat transfer coefficient, the number of fins and fin length separately take their optimal values of 35 W/m2K, 8 and 15 mm. Moreover, when the ambient temperature rises from 25 °C to 30 °C, the maximum temperature of the battery is 46 °C, which still remains within a safe range, indicating that the thermal management system presents good thermal stability.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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