Analysis and prevention of thermal runaway of lithium batteries.
Lithium batteries are one of the widely used batteries currently, with advantages such as high energy density, long lifespan, and lightweight. With the continuous development of technology and the popularization of applications, lithium batteries have also been applied in more and more fields, such as consumer electronics, new energy vehicles, aerospace, etc. However, with the gradual extension of service life and storage requirements, thermal runaway of lithium batteries has also become a highly concerned issue. This article will analyze the causes of thermal runaway in lithium batteries and propose preventive measures.
Wholesale of energy storage power lithium batteries
1、 Analysis of the causes of thermal runaway in lithium batteries
1. Improper charging
Improper charging is one of the common causes of thermal runaway in lithium batteries. If the charging current is too high or the charging time is too long, it will cause the electrolyte to evaporate, the charging temperature to rise, and thus cause thermal runaway.
2. Battery aging
Battery aging is also an important cause of thermal runaway in lithium batteries. As the number of charge and discharge cycles increases and under specific charge and discharge conditions, the lithium content in the electrode materials of lithium-ion batteries gradually decreases, resulting in an increase in internal impedance and a decrease in charge and discharge efficiency, leading to thermal runaway.
3. External environment
The external environment can also affect the performance of lithium batteries. In high temperature environments, the conductivity of electrolytes decreases, their ability to carry decomposition products decreases, and they have an impact on the performance of electrode materials, all of which can lead to thermal runaway.
2、 Prevention of thermal runaway in lithium batteries
1. Standardized use
Standardized use is an important measure to prevent thermal runaway of lithium batteries. To use the lithium battery charger correctly and charge it according to the instructions; Do not exceed the rated charging time or charging current; Do not expose lithium batteries to high or low temperature environments; Do not put lithium batteries together with metal, keys, and other items.
2. Choose high-quality lithium batteries
The quality of lithium batteries is also one of the important measures to prevent thermal runaway. Try to purchase branded and legitimate lithium batteries, choose suitable lithium battery models in different application fields, and use them according to the instructions. Do not change the lithium battery brand at will.
3. Strengthen monitoring
Strengthening monitoring is a necessary measure to prevent thermal runaway of lithium batteries. The voltage, current, temperature and other parameters of lithium batteries need to be monitored in real time, and timely alarms and corresponding measures should be taken.
4. Strengthen environmental management
Strengthening environmental management is also one of the important measures to prevent thermal runaway of lithium batteries. Lithium batteries should be stored in a dry, ventilated, and temperature appropriate place, away from sources of fire and flammable materials.
conclusion
Thermal runaway of lithium batteries is a concern that has attracted widespread attention due to its serious consequences. Starting from the analysis of the causes of thermal runaway of lithium batteries, this article proposes measures to prevent thermal runaway of lithium batteries. Among them, standardized use, selection of high-quality lithium batteries, strengthening monitoring, and enhancing environmental management are all important measures to prevent thermal runaway of lithium batteries, which can help improve the safety performance of lithium battery use.
