EV ESS ONE SIDE OR DOUBLE SIDE COATING EQUIPMENT FOR MANUFACTURING COATING SEPARATOR FOR MIDDLE OR LARGE SIZED SECONDARY BATTERY OF ELECTRIC VEHICLE OR ENERGY STORAGE SYSTEM

摘要

The present invention relates to a single-sided and double-sided combined coating facility for manufacturing a coating separator for medium and large secondary batteries of EV or ESS, an unwinder for continuously supplying fabrics; For conveying the fabric supplied through the unwinder, it includes a plurality of rolls for tension control and wrinkle prevention when feeding the fabric, and is equipped with an EPC sensor to prevent running in the direction of travel to ensure normal running A first infeeder to enable; A heating roll for increasing the coating efficiency during coating by increasing heat conductivity by applying heat to the fabric supplied through the first feeder; A corona processor for increasing the surface energy through surface treatment by corona discharge and activating the fabric transferred via the heating roll, and having hydrophilicity through surface cleaning of the fabric to increase adhesion during coating; A second infeeder having the same configuration as the first infeeder, which is used for continuous conveyance of the fabric passing through the corona processor; A micro-gravure coating machine comprising a gravure roll having a cell structure by a mesh and a scraper blade, for coating a predetermined thickness by applying a separator coating in the form of an aqueous slurry on the fabric side supplied by the second infeeder; It is for carrying out hot air drying while transferring to the coating separator, which is a fabric having a coating layer, via the micro gravure coating machine, and is designed as a hot air drying arch type chamber to provide positive pressure management, thereby increasing internal thermal conductivity while drying. A drying chamber having a foreign body preventing function; It is used for continuous transfer of the coating separator that has passed through the drying chamber, and has the same configuration as the first infeeder, and has a first outfeeder and a second outfeeder for transporting the coating separator to the rewinder side; It is installed between the first out feeder and the second out feeder, and is subjected to a function of dispersing and unfolding the fabric by applying vibration by high-frequency oscillation to the side of the coating separator processed by the first out feeder, thereby winding up the rewinder. Oscillator for preventing the occurrence of wrinkles in addition to the rise of the edge portion; To measure the thickness of the coating separator supplied to the rewinder side through the second outfeeder and use it as data to check the thickness distribution in real time when coating, a thickness meter that combines an X-Ray and an infrared sensor; A trimming unit for trimming by cutting both ends with respect to a width direction with respect to a coating separator to be transported through the thickness meter; And a rewinder for winding the coating separation membrane trimmed by the trimming unit. According to the present invention, it is possible to satisfy the mass production properties such as increasing the mass production or production yield by enabling continuous operation by the roll-to-roll operation method, and increase the coating efficiency by applying the coating method using micro gravure. In addition, it is possible to manufacture a high quality coating separator having a smooth surface and no curling, and can provide an advantage of easily manufacturing a coating separator for a secondary battery, which has improved thermal properties and safety at high temperatures. have.