Apparatus and method for coating functional layer

• Main Authors: HWANG JEE-SANG, KIM SU-HWAN, LEE HYOUNG-NO, MOON SO-IL
• Format: Patent
• Language: Chinese; English
• Published: 10.08.2011
• Subjects: APPARATUS FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; BASIC ELECTRIC ELEMENTS; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; PERFORMING OPERATIONS; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; SPRAYING OR ATOMISING IN GENERAL; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING

The invention discloses an apparatus and a method for coating a functional layer on a current collector with an active material layer thereon. The apparatus comprises a first roll and a second roll which are used for advancing the current collector, a gravure roll configured to coat the functional layer on the active material layer, a thickness measurer configured to measure at least one of a thickness of the active material layer and a sum thickness of the active material layer and the functional layer, and a controller being in communication with the thickness measurer and being configured to control a rotation speed of the gravure roll.