Study on the Effectiveness of Water Mist on Suppressing Thermal Runaway in LiFePO<sub>4</sub> Batteries
Lithium-ion batteries experience rapid temperature increases with a high risk of combustion and explosion during thermal runaway, and water mist has been considered as one of the most effective cooling strategies. The water mist field can be impacted by the safety valve airflow, subsequently affecti...
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| Format: | Article |
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MDPI AG
2023-09-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/13/9/1346 |
| _version_ | 1797580707004940288 |
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| author | Qian Li Jinshan Yu Guangzhen Liu Xiaoguang Ma Wei Si Xiangyu Hu Guoqing Zhu Tong Liu |
| author_facet | Qian Li Jinshan Yu Guangzhen Liu Xiaoguang Ma Wei Si Xiangyu Hu Guoqing Zhu Tong Liu |
| author_sort | Qian Li |
| collection | DOAJ |
| description | Lithium-ion batteries experience rapid temperature increases with a high risk of combustion and explosion during thermal runaway, and water mist has been considered as one of the most effective cooling strategies. The water mist field can be impacted by the safety valve airflow, subsequently affecting the cooling characteristics. In this paper, the water mist nozzle with a fixed working pressure is located 1 m above the 100 Ah LiFePO<sub>4</sub> battery to suppress the thermal runaway, and the cooling characteristics under various stages have been compared and analyzed. The results show that the development of thermal runaway can be inhibited before thermal runaway is initiated, and the water mist presents a better cooling effect after the battery safety valve is opened. The critical accumulation heat density of 155 kJ/kg has been identified, which is the threshold for thermal runaway suppression. The confrontation between water mist and the flame has been analyzed, and the water mist droplets cannot fall on the battery surface, resulting in a poor cooling rate of 0.57 kW. This means the suppression effect of water mist will be affected by the airflow impact of the safety valve. |
| first_indexed | 2024-03-10T22:54:45Z |
| format | Article |
| id | doaj.art-f2bd760051e74477ab8faacc65798d2a |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-10T22:54:45Z |
| publishDate | 2023-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-f2bd760051e74477ab8faacc65798d2a2023-11-19T10:09:25ZengMDPI AGCrystals2073-43522023-09-01139134610.3390/cryst13091346Study on the Effectiveness of Water Mist on Suppressing Thermal Runaway in LiFePO<sub>4</sub> BatteriesQian Li0Jinshan Yu1Guangzhen Liu2Xiaoguang Ma3Wei Si4Xiangyu Hu5Guoqing Zhu6Tong Liu7STATE GRID Tianjin Electric Power Company, Tianjin 300022, ChinaSTATE GRID Tianjin Electric Power Company, Tianjin 300022, ChinaSTATE GRID Tianjin Electric Power Company, Tianjin 300022, ChinaSTATE GRID Tianjin Electric Power Company, Tianjin 300022, ChinaSTATE GRID Tianjin Electric Power Company, Tianjin 300022, ChinaSchool of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaSchool of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaSchool of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaLithium-ion batteries experience rapid temperature increases with a high risk of combustion and explosion during thermal runaway, and water mist has been considered as one of the most effective cooling strategies. The water mist field can be impacted by the safety valve airflow, subsequently affecting the cooling characteristics. In this paper, the water mist nozzle with a fixed working pressure is located 1 m above the 100 Ah LiFePO<sub>4</sub> battery to suppress the thermal runaway, and the cooling characteristics under various stages have been compared and analyzed. The results show that the development of thermal runaway can be inhibited before thermal runaway is initiated, and the water mist presents a better cooling effect after the battery safety valve is opened. The critical accumulation heat density of 155 kJ/kg has been identified, which is the threshold for thermal runaway suppression. The confrontation between water mist and the flame has been analyzed, and the water mist droplets cannot fall on the battery surface, resulting in a poor cooling rate of 0.57 kW. This means the suppression effect of water mist will be affected by the airflow impact of the safety valve.https://www.mdpi.com/2073-4352/13/9/1346LiFePO<sub>4</sub> batterythermal runawaywater mistaccumulated heat densityconfrontation phenomenon |
| spellingShingle | Qian Li Jinshan Yu Guangzhen Liu Xiaoguang Ma Wei Si Xiangyu Hu Guoqing Zhu Tong Liu Study on the Effectiveness of Water Mist on Suppressing Thermal Runaway in LiFePO<sub>4</sub> Batteries Crystals LiFePO<sub>4</sub> battery thermal runaway water mist accumulated heat density confrontation phenomenon |
| title | Study on the Effectiveness of Water Mist on Suppressing Thermal Runaway in LiFePO<sub>4</sub> Batteries |
| title_full | Study on the Effectiveness of Water Mist on Suppressing Thermal Runaway in LiFePO<sub>4</sub> Batteries |
| title_fullStr | Study on the Effectiveness of Water Mist on Suppressing Thermal Runaway in LiFePO<sub>4</sub> Batteries |
| title_full_unstemmed | Study on the Effectiveness of Water Mist on Suppressing Thermal Runaway in LiFePO<sub>4</sub> Batteries |
| title_short | Study on the Effectiveness of Water Mist on Suppressing Thermal Runaway in LiFePO<sub>4</sub> Batteries |
| title_sort | study on the effectiveness of water mist on suppressing thermal runaway in lifepo sub 4 sub batteries |
| topic | LiFePO<sub>4</sub> battery thermal runaway water mist accumulated heat density confrontation phenomenon |
| url | https://www.mdpi.com/2073-4352/13/9/1346 |
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