New Energy

Application of Compressed Air Technology in New Energy Vehicle Industry

In the production of lithium-ion batteries for new energy vehicles, the manufacturing process of battery cells involves multiple stages where compressed air plays a crucial role, particularly in material handling and the preparation of cell components such as anodes, cathodes, and electrolytes.

During these processes, dryers are essential for ensuring that the compressed air used is free from moisture. Moisture can cause contamination and negatively impact the quality and performance of the battery cells. For instance, in the preparation of electrode materials, even trace amounts of moisture can lead to the degradation of materials, affecting the efficiency and lifespan of the battery.

Dryers, such as refrigerated and desiccant dryers, remove moisture from the compressed air, ensuring that the air used in sensitive processes remains dry. This is particularly important in stages like coating, where the electrode materials are applied to the current collector foils. If the air used here contains moisture, it could lead to defects in the coating, such as poor adhesion or uneven distribution, which would compromise the battery's performance.

First of all, in the process of raw material processing, airflow grinding is a key link. This process requires the use of oil-free, low-dew point compressed air to ensure the purity and efficiency of the grinding process. The presence of any oil or moisture in the airflow grinding may cause contamination of the grinding material, which in turn affects the subsequent battery performance. Therefore, choosing high-quality compressed air equipment that can provide a stable and pollution-free air source is the basis for ensuring the quality of battery materials.

In the production process of positive and negative electrode materials of batteries, the demand for purified gas is particularly important. Carbon dioxide (CO2) in compressed air must be effectively removed, otherwise it may cause changes in the physical and chemical properties of the material, thereby affecting the electrochemical performance of the battery. The high-quality purification equipment provided by Risheng Company can reduce the concentration of carbon dioxide in compressed air to below 1ppm, ensuring that the positive and negative electrode materials produced reach the highest standard of purity and ensuring the stability and efficiency of the battery during use.

In the battery assembly and processing stage, compressed air is more widely used. For example, in the battery cell baking process, high-quality nitrogen preparation is crucial, which is also inseparable from the support of compressed air. Nitrogen is not only needed to ensure the stability of the material in an oxygen-free environment, but also plays a protective role during the baking and sintering process. The power source and pure air environment provided by compressed air ensure the purity and stability of nitrogen, making the assembly process of the battery cell more reliable and the quality of the final product guaranteed.

In addition, compressed air is used throughout the production line as instrument gas and production line power source throughout the various process stages of battery manufacturing. Whether it is used to drive mechanical equipment, control automated production lines, or operate precision instruments, the quality of compressed air directly affects the efficiency of the entire production process and the accuracy of the product. High-quality compressed air can reduce the wear of production equipment, extend the service life of equipment, and also improve the stability and reliability of the production line.