Diaphragm coating device having online thickness measuring function

Abstract

The invention discloses a diaphragm coating device having an online thickness measuring function. The device comprises a diaphragm coating mechanism, a thickness detection mechanism and a control panel. The diaphragm coating mechanism comprises a coating roller used for coating coating onto the diaphragm and a motor for driving the coating roller to rotate. The thickness detection mechanism comprises a stand, a detection guide roller and an infrared detector. The detection guide roller comprises a first detection guide roller and a second detection guide roller, which are arranged on the stand at intervals; and the infrared detector is arranged above the space between the first detection guide roller and the second detection guide roller. The control panel is in communication connection with the infrared detector and the motor, and controls the motor to rotate according to the thickness information measured by the infrared detector. The device can control the coating thickness in the diaphragm coating process, achieves a purpose of online improving the surface flatness of the diaphragm, improves product qualified rate, reduces enterprise production cost and improves enterprise production efficiency.

Description

technical field [0001] The invention relates to the technical field of diaphragm production equipment for lithium batteries, in particular to a diaphragm coating device with an online thickness measurement function. Background technique [0002] In recent years, with the continuous deepening and development of lithium-ion battery applications, people have higher and higher requirements for its safety. Lithium-ion batteries generally include a packaging bag, a battery cell placed in the packaging bag, and an electrolyte filled in the packaging bag and filled in the battery cell. The battery cell is composed of a positive electrode sheet, a negative electrode sheet, and The diaphragm between. As an important part of the lithium-ion battery, the separator separates the positive and negative plates to prevent short circuits, and its safety performance is particularly important. [0003] At present, in order to improve the performance of the separator, it is necessary to apply ...

AI Technical Summary

Problems solved by technology

Then, it is unavoidable that there will be irregularities such as wavy edges on the surface of the diaphragm. When coating with the same thickness, the unevenness of the diaphragm cannot be improved, and it is easy to increase the defect rate and scrap rate of the diaphragm product, resulting in an increase in production costs. Reduced production efficiency of the enterprise

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