How to improve the safety of lithium batteries？

Causes of lithium battery explosion

The reason why lithium batteries are prone to explosion is closely related to their chemical properties and usage conditions.

Overcharging and short circuit are one of the main causes of lithium battery explosion. When the voltage of a lithium battery exceeds its designed upper limit during charging, a large amount of heat will be generated inside the battery. This heat will cause the electrolyte and other materials to decompose and produce gas, which will cause the battery shell or pressure valve to swell and rupture. If oxygen enters the battery at this time and reacts with the lithium atoms accumulated on the surface of the negative electrode, it is very easy to cause an explosion. In addition, if the positive and negative electrodes inside the battery are in direct contact, or if the battery is short-circuited due to external factors, a large amount of heat will be generated quickly, which will cause the battery to explode.

Secondly, when a lithium battery is collided or squeezed, the internal structure may be damaged, resulting in contact between the positive and negative electrodes, which will cause a short circuit and explosion. In addition, lithium batteries are exposed to high temperatures for a long time.

Preventive measures

In order to prevent the occurrence of lithium battery explosion accidents, we can start from the following aspects:

1. Strictly control the charging process: set a reasonable charging voltage and current upper limit to avoid overcharging. Use a charger with overcharge protection function to ensure that the battery does not exceed the safety range during charging.

2. Strengthen battery safety management: Regularly conduct safety inspections and maintenance of lithium batteries to promptly identify and deal with potential safety hazards. During storage and transportation, ensure that the battery is in a safe state to avoid collisions and extrusion.

3. Improve the safety of energy storage facilities: Use advanced monitoring and early warning technologies in energy storage systems to monitor the working status and environmental conditions of batteries in real time. Establish a sound safety management system and emergency plan to ensure rapid response and effective disposal in the event of an accident.

4. Enhance public safety awareness: Strengthen the popularization and education of lithium battery safety knowledge to improve the public's awareness and attention to lithium battery safety. Encourage users to comply with safety operating procedures when using lithium battery products to avoid accidents caused by improper use and storage methods.

Importance of energy storage safety

With the rapid development of renewable energy and the popularity of electric vehicles, lithium batteries, as an important energy storage system, play an increasingly important role in the energy field. However, the safety of lithium batteries is directly related to the safety of people's lives and property and social stability. Therefore, it is of great significance to strengthen the research and management of lithium battery energy storage safety.

On the one hand, by improving the safety performance and technical level of lithium batteries, the probability of accidents and the degree of losses can be reduced; on the other hand, establishing a sound energy storage safety management system and emergency response mechanism can enable rapid and effective disposal and rescue work when accidents occur, minimizing casualties and property losses.