Separator thickness adjustment device and method, and winding electrode assembly production system

A separator thickness adjustment device, comprising:

• a mounting base;
• an active roller and a passive roller disposed at the mounting base in parallel to each other, each of the active roller and the passive roller being rotatable about its own axis, a gap being formed between the active roller and the passive roller, a separator passing through the gap, and a position of the passive roller relative to the active roller being adjustable to change a size of the gap;
• a first drive component configured to drive the active roller to rotate about its own axis to move the separator;
• a second drive component configured to drive the passive roller to move towards or away from the active roller, to change pressures applied to two sides of the separator by the active roller and the passive roller through adjusting the size of the gap, adjusting a thickness of the separator during the movement of the separator;
• a heating assembly configured to heat at least one of the active roller and the passive roller;
• and
• a controller configured to determine an adjustment amount of the passive roller and a heating temperature of the heating assembly based on an offset of an innermost-layer tab portion from an outermost-layer tab portion of a winding electrode assembly in a winding circumferential direction of the winding electrode assembly.