ELECTRODE ASSEMBLY AND RELATED BATTERY, DEVICE, MANUFACTURING METHOD, AND MANUFACTURING DEVICE

The present disclosure provides an electrode assembly and a related battery, device, manufacturing method and manufacturing device thereof. The electrode assembly comprises a plurality of first electrode plates and at least one second electrode plate, wherein the polarity of the first electrode plate is opposite to the polarity of the second electrode plate, the plurality of first electrode plates and the at least one second electrode plate are wound around a winding axis to form a winding structure, in the winding structure, the plurality of first electrode plates and the at least one second electrode plate are arranged in a superimposing manner along a direction vertical to the winding axis. Each first electrode plate in the plurality of first electrode plates comprises a first current collector and a first active substance layer arranged on a superimposing surface of the first current collector, and the first current collector comprises a first main body portion provided with a first active substance layer and at least one first tab which protrudes from the first main body portion along the direction of the winding axis; wherein each first tab in the at least one first tab and the first main body portion are arranged in parallel along the winding axis. The number of winding turns of the electrode assembly of the present disclosure is reduced, and the amount of misplacement of the first tab on the circumferential direction after winding can be reduced.