Lithium battery diaphragm drying system

The utility model provides a lithium battery diaphragm drying system, and belongs to the technical field of lithium battery diaphragm production. The system comprises a first-stage drying device, an airtight device and a second-stage drying device which are connected in sequence; a plurality of groups of driving rollers are arranged in the first-stage drying device and the second-stage drying device; and at least one group of heat exchange rollers I is arranged in the airtight device. The system adopts two-stage drying and isolates the two-stage drying device through the airtight device, so that the problems of watermarks and bright spots on the surface of the diaphragm are reduced to the greatest extent, and a process setting window is improved. 本实用新型提供了一种锂电隔膜干燥系统，属于锂电隔膜生产技术领域。该系统包括依次连接的一级干燥装置、气密装置和二级干燥装置；所述一级干燥装置和二级干燥装置内设有若干组传动辊，所述气密装置内设有至少一组换热辊一。该系统通过采用两级干燥并通过气密装置隔绝两级干燥装置，最大程度降低隔膜表面的水印、亮斑问题，提升工艺设置窗口。