Full
Outline
Temperature is the main factor affecting the safety and operating efficiency of lithium-ion battery energy storage systems, and an excellent thermal management design is helpful in improving the operating temperature environment of batteries, which is the basic guarantee for the safety and high efficiency of energy storage systems. To improve the operating temperature environment of batteries, an open-type air-cooled heat dissipation battery module used in lithium-ion battery energy storage systems was designed, and a numerical simulation method was used to study the effects of fanflow rate, cross-sectional shape of heat dissipation harmonica tubes and the contact heat transfer coefficient between the battery and harmonica tubes on the heat dissipation performance of the air-cooled battery module. Results showed that as the fan flow rate increased from 0.400 m3/min to 2.400 m3/min, both the maximum and minimum temperatures of the air-cooled heat dissipation battery module decreased considerably until an equilibrium was reached. The maximum temperature difference of the battery module decreased from 9.3 ℃ to 6.6 ℃, with a decrease of 2.7 ℃. The air flow distribution rationality of harmonica tubes was improved by changing the harmonica tube cross-sectioal shape from uniform distribution state to partitioned layout, which reduced the maximum temperature difference of the battery module from 6.8 ℃ to 4.5 ℃ at a fan flow rate of 2.000 m3/min, with a substantial decrease of 33.8%. In addition, the overall temperature rise of the air-cooled heat dissipation battery module can be effectively reduced by increasing the contact heat transfer coefficient between the battery and harmonica tubeswithin a certain range.
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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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