Pouch lithium battery is a kind of lithium battery packaged in aluminum-plastic film, and its electrolyte is liquid or gelatinous, and no metal hard shell is used as the shell. Compared with traditional metal-shell lithium batteries, pouch lithium batteries have higher energy density, lighter weight and better safety. It has been widely used in electric vehicles, mobile power supplies, intelligent terminals and other fields.
X-ray inspection technology is a non-destructive testing technology, through X-ray penetration of the detected object, using different substances to absorb and scatter X-rays to different degrees, so as to detect the internal structure and defects of the object. X-ray detection technology has the characteristics of non-destructive, high efficiency, high precision and high reliability, and is widely used in lithium battery manufacturing, electronic components, auto parts and other fields.
Internal structure inspection: The distribution of electrodes, separators and electrolytes inside pouch lithium batteries, as well as the pores and impurities inside the battery can be clearly observed through X-ray detection technology. This helps to identify and resolve problems in the battery manufacturing process in a timely manner, improving battery consistency and reliability.
Welding quality inspection: In the manufacturing process of pouch lithium battery, the welding process is a very important part. Through X-ray detection technology, the internal structure of the welding part can be clearly observed, and whether the welding quality is qualified, whether there are defects such as virtual welding and unwelded penetration. This helps to improve the safety and reliability of the battery.
Porosity and internal defect detection: If porosity or internal defects occur during the use of pouch lithium batteries, it will have an impact on the safety and performance of the battery. Through X-ray inspection technology, porosity and defects inside the battery can be detected, and batteries with potential safety hazards can be prevented from entering the market.