Diaphragm gluing mechanism for lithium ion battery and operation method thereof

Abstract

The invention discloses a diaphragm gluing mechanism for a lithium ion battery and an operation method thereof. The diaphragm gluing mechanism comprises a dustproof assembly, a first roller, a conveying belt, a second roller, a third roller, a collecting box, a box body, an inclined block, a feeding opening, a discharging opening, a spraying head, a connecting column, a conveying pipe, a discharging pipe, a scraping plate, a connecting rod, a stop rod, a screw rod, a pointer and a graduated scale rod. According to the diaphragm gluing mechanism, the distance between the scraping plate and a diaphragm can be advantageously adjusted by using the installed screw rod, so that glue scraping treatment is conveniently conducted according to the diaphragms of different specifications, the application range of the diaphragm gluing mechanism is enlarged, meanwhile, glue on the diaphragms is scraped away through the installed scraping plate, unbalanced diaphragm gluing is avoided, therefore the quality of the diaphragms is improved, redundant glue is advantageously collected by using the installed collecting box, meanwhile, the entering amount of dust entering the box body is effectively reduced by using the installed dustproof assembly, and therefore the yield of diaphragm gluing is increased.

Description

technical field [0001] The invention relates to the technical field of a diaphragm gluing mechanism, in particular to a diaphragm gluing mechanism for a lithium-ion battery and an operating method thereof. Background technique [0002] In the structure of lithium batteries, the separator is one of the key inner components. The performance of the separator determines the interface structure and internal resistance of the battery, which directly affects the capacity, cycle and safety performance of the battery. A separator with excellent performance plays an important role in improving the overall performance of the battery. The main function of the diaphragm is to separate the positive and negative electrodes of the battery, prevent the two electrodes from contacting and short circuit, and also have the function of allowing electrolyte ions to pass through. The separator material is non-conductive, and its physical and chemical properties have a great influence on the perfor...

AI Technical Summary

Problems solved by technology

For the lithium battery series, because the electrolyte is an organic solvent system, a diaphragm material resistant to organic solvents is required. Generally, a high-strength thin-film polyolefin porous film is used. In the process of manufacturing and using the diaphragm, the diaphragm is often required Carry out gluing treatment to make the required diaphragm, so in the process of gluing the diaphragm, it is often necessary to use a diaphragm gluing mechanism to facilitate better gluing treatment of the diaphragm, but the traditional gluing mechanism, in the process of Summary of the process of spraying the diaphragm Due to the difference in the amount of glue sprayed, the diaphragm glue is uneven, which reduces the quality of the diaphragm. In the process of using the diaphragm spraying mechanism, in order to facilitate the processing of the film, the entrance and exit of the film are usually for the convenience of work. It is opened by personnel to carry out the membrane penetration process, and the opening of the membrane inlet and outlet is easy to cause dust to enter the box, make the dust contact with the diaphragm, and cause the dust to remain on the diaphragm, thereby reducing the yield of diaphragm glue coating.

Images