Briefly describe the effects of polar film manufacturing on the consistency of lithium ion battery performance -Lithium - Ion Battery Equipment
The coating process is divided into three sections, one is the slurry system, the other is the coating system, and the third is the polar dried system. The triple -in -one requires each system to maintain stability to ensure the consistency of the pole. This article will affect the consistency of lithium battery performance from the perspective of coating.
The slurry system is transferred to the slurry tank after the mixing is completed, and the diaphragm pump is transferred to the transition cylinder, and the screw pump is used to stabilize the pulp output through the filtering device and the iron removal device to the coating equipment. Apply. Several points that need to be paid attention to in the automatic grown -up system of the slurry are: prevent the layers of the slurry in the storage tank, the slurry level of the slurry in the transition cylinder, the stability of the screw pump, and the blockage of the filter tank should be cleaned in time. The figure below is a schematic diagram of a certain automatic feeding system, see the reference in detail.(Lithium - Ion Battery Equipment)
The coating method of lithium battery slurry mainly includes comma scraper type, metastasis, and slit extrusion coating. The three methods of coating each have their own characteristics. The scraper type is mainly used in the laboratory conditions. The transfer type coating is mainly used in the production of 3C batteries. The parameters that characterize the stability of the pole are extremely one -sided density, polar thickness, and adhesion. In the coating system, the factors that affect pole consistency are mainly coating head manufacturing accuracy, screw pump conveying pulp stability, compressed gas stability, speed stability, and control of dynamic tension.
Scraper
Metastatic
Slit squeeze
The polar drying system is mainly composed of a oven with different temperature distribution. The purpose is to dry the pole. In the drying system, it is necessary to pay attention to the setting of the drying temperature. If the temperature is too high during the coating process, it will easily cause the polar turtle cracks. If the temperature is low, the pole will not be completely dry, which will cause the battery to local polarization. In addition, pay attention to the problem of preventing adhesives from floating.
The problems that often occur in the coating process are defects such as thickness and thin tails, bilateral thick edges, dot -shaped dark spots, rough surfaces, and exposed foil. The thickness of the head and tail can be adjusted by the switch time of the coating valve or the intermittent valve. The thick edge problem can be improved from the aspects of the slurry nature, the coating gap adjustment, and the flow rate of the slurry. , Reduce speed, adjust the angle of the wind knife, and so on.
The slurry system is transferred to the slurry tank after the mixing is completed, and the diaphragm pump is transferred to the transition cylinder, and the screw pump is used to stabilize the pulp output through the filtering device and the iron removal device to the coating equipment. Apply. Several points that need to be paid attention to in the automatic grown -up system of the slurry are: prevent the layers of the slurry in the storage tank, the slurry level of the slurry in the transition cylinder, the stability of the screw pump, and the blockage of the filter tank should be cleaned in time. The figure below is a schematic diagram of a certain automatic feeding system, see the reference in detail.(Lithium - Ion Battery Equipment)
The coating method of lithium battery slurry mainly includes comma scraper type, metastasis, and slit extrusion coating. The three methods of coating each have their own characteristics. The scraper type is mainly used in the laboratory conditions. The transfer type coating is mainly used in the production of 3C batteries. The parameters that characterize the stability of the pole are extremely one -sided density, polar thickness, and adhesion. In the coating system, the factors that affect pole consistency are mainly coating head manufacturing accuracy, screw pump conveying pulp stability, compressed gas stability, speed stability, and control of dynamic tension.
Scraper
Metastatic
Slit squeeze
The polar drying system is mainly composed of a oven with different temperature distribution. The purpose is to dry the pole. In the drying system, it is necessary to pay attention to the setting of the drying temperature. If the temperature is too high during the coating process, it will easily cause the polar turtle cracks. If the temperature is low, the pole will not be completely dry, which will cause the battery to local polarization. In addition, pay attention to the problem of preventing adhesives from floating.
The problems that often occur in the coating process are defects such as thickness and thin tails, bilateral thick edges, dot -shaped dark spots, rough surfaces, and exposed foil. The thickness of the head and tail can be adjusted by the switch time of the coating valve or the intermittent valve. The thick edge problem can be improved from the aspects of the slurry nature, the coating gap adjustment, and the flow rate of the slurry. , Reduce speed, adjust the angle of the wind knife, and so on.
