Electrode sheet coating deviation correction method and system

A coating system, the coating system comprising:

• an unwinding mechanism, configured to unwind an electrode plate;
• a first coating mechanism, configured to coat a first coating surface of the unwound electrode plate;
• a second coating mechanism, disposed behind the first coating mechanism and configured to coat a second coating surface of the electrode plate;
• a drying mechanism, configured to dry the electrode plate coated by the first coating mechanism and the second coating mechanism;
• a rewinding mechanism, configured to rewind the dried electrode plate;
• and
• a visual detection system, wherein the visual detection system is capable of performing acquisition of two opposite coating surfaces of the electrode plate to obtain coating images, determining coating misalignment information by using the coating images, and performing deviation correction on at least two of the coating mechanisms of the two coating surfaces and the electrode plate based on the coating misalignment information, so as to enable coated regions on the two coating surfaces after the deviation correction to be aligned and both located at standard coating positions on the coating surfaces, wherein the coating misalignment information comprises first misalignment information, and the first misalignment information characterizes misalignment between a coated region on a coating surface and a standard coating position on the coating surface.