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In order to solve the problem of thermal diffusion of lithium-ion battery pack in use, this paper selects a certain type of square ternary lithium-ion battery, choosing glycol aqueous solution as the cooling medium to pour and cool the thermal runaway cell actively, so as to explore the temperature change law of the thermal runaway cell and its adjacent cells under different pouring amount, also the influences of water pump on the pouring speed are studied by stimulating a real vehicle environment. The experiment results show that the pouring amount and pouring flow rate of coolant are important variables affecting the occurrence of thermal diffusion. When the pouring amount is 1.5 L and the flow rate is 0.69 L/min, the maximum temperature of the thermal runaway cell is reduced from 713 ℃ to 556 ℃, effectively reducing the heat transfer from the thermal runaway cell to the adjacent cells, avoiding the thermal runaway of the adjacent cells, and preventing the occurrence of thermal diffusion in the battery pack.
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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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