Causes of excessive gas production in lithium batteries

1.overcharge

     When a lithium battery is overcharged, the lithium ions become over-embedded in the negative electrode, which can cause the electrolyte to decompose and produce gas. Overcharging will increase the internal pressure of the battery, affecting the stability and safety of the battery.

2. overdischarge

     Deep discharges can destroy the structure of the negative electrode material, thus generating gases. Over-discharge reduces the capacity and life of the battery and also increases the safety risk.

3.high temperature

     High temperature environments can accelerate chemical reactions within the battery, leading to electrolyte decomposition and gassing. High temperatures also affect the performance and life of the battery, and may even trigger thermal runaway.

4.internal short circuit

     An internal short circuit in the battery can lead to a high current, which generates a lot of heat and gas. Internal short circuits can be caused by manufacturing defects, impurities or mechanical damage.

5.Battery aging

     As the life of the battery increases, the internal materials of the battery may gradually decompose and produce gas. Battery aging reduces the performance and life of the battery and increases safety risks.

6.manufacturing defect

     Defects in the battery manufacturing process, such as impurities and micro-short circuits, may also lead to gas generation. Manufacturing defects can affect the quality and reliability of the battery.