With the rapid development of electric vehicles, energy storage systems and other fields, soft pack ternary lithium ion batteries are widely used due to their high energy density, lightweight and other characteristics. However, the battery may lose control of heat under abnormal circumstances, resulting in toxic substances and potential harm to the environment and human body. Therefore, it is of great significance to analyze the toxic products produced by the soft-pack ternary lithium ion battery under the condition of thermal runaway, and to study the influence of battery structure changes on the process of thermal runaway.

Analysis of toxic products of thermal runaway of soft pack ternary lithium ion battery

1. gas Product Analysis: When the Soft Pack ternary lithium ion battery is out of control of heat, it may release gas products, such as hydrogen, oxygen, carbon dioxide, etc. The generation of these gases may increase the risk of fire, and may also cause harm to the surrounding environment and human body.

2. Liquid product analysis: when the heat is out of control, the electrolyte inside the battery may decompose and produce toxic substances. It is very important for the safety assessment of batteries to analyze the chemicals produced in electrolyte and understand their toxicity and harm degree.

3. Solid product analysis: soft pack ternary lithium ion battery may decompose the electrode material when the heat is out of control, resulting in harmful solid products. Analyzing the composition and characteristics of these solid products is of great significance for evaluating the potential impact of battery thermal runaway on the environment and human body.

Study on battery structure changes

1. electrode expansion and rupture: in the process of thermal runaway, the electrode material may expand and break, resulting in changes in the internal structure of the battery. Studying the mechanism of electrode expansion and rupture is helpful to understand the behavior of the battery under abnormal conditions.

2. Electrolyte leakage: When the battery is out of control of heat, the electrolyte may leak out of the battery and react with the external environment. Studying the influence and mechanism of electrolyte leakage can provide improvement suggestions for battery design and reduce the risk of thermal runaway.

3. Thermal stability of battery structure: by studying the thermal stability of battery materials, we can understand the performance and safety of the battery under high temperature conditions, and provide reference for improving the thermal runaway resistance of the battery.