With the popularity of new energy vehicles, the demand for Power Battery System Display is growing. However, the recent occurrence of new energy vehicle fires has occurred frequently. The survey results show that it is related to power batteries. Therefore, the safety of power lithium batteries has become a hot topic for people.
There are many factors that affect the safety of Power Battery System Display, and battery materials have a significant impact on the safety of lithium batteries. Secondly, the manufacturing process of the battery is also an important factor affecting the safety performance of the battery. The most important ones are three factors: positive and negative volume ratio, slurry uniformity control, and coating quality control. The positive and negative capacitance ratios are related to the service life and safety performance of the battery. In order to ensure the safety performance of the battery, it is necessary to fully consider the positive and negative cycle characteristics of the battery when charging and the ability of the negative electrode to accept lithium. The uniformity of the slurry directly affects the uniformity of the distribution of the active material of the battery on the electrode, the slurry is not uniform, and the phenomenon of expansion and contraction of the negative electrode material occurs when the battery is charged and discharged. However, poor coating quality control can easily cause internal short circuit of the battery. In addition, the thickness and uniformity of the coating affect the embedding and extraction of the active material.