The utility model discloses a
battery cell diaphragm detection device and
battery cell preparation equipment, and the
battery cell diaphragm detection device comprises a quality detection
assembly which is used for detecting and identifying at least one surface abnormal part of a battery
cell diaphragm; the length metering
assembly is used for metering the transmission length of the battery
cell diaphragm from the surface abnormal part; the battery
cell diaphragm sequentially passes through the quality detection
assembly, the length metering assembly and the
cutting assembly, the
cutting assembly is used for
cutting the battery cell diaphragm with the transmission length being metered to obtain the battery cell diaphragm with the length not smaller than the preset length and without the surface abnormal part, and the cutting assembly is further used for cutting off the battery cell diaphragm with the surface abnormal part. Through the cutting assembly, the normal battery cell diaphragm which can be used for lamination and conforms to the required lamination length is
cut, and the abnormal battery cell diaphragm is
cut off, so that the diaphragm containing an abnormal part is prevented from being used for laminating a roll core, meanwhile, the whole roll of battery cell diaphragm containing the abnormal part is prevented from being directly discarded, the
utilization rate of the abnormal battery cell diaphragm is improved, and the production cost is reduced. The waste problem is avoided.