WOUND ELECTRODE ASSEMBLY, BATTERY CELL, BATTERY AND ELECTRICAL DEVICE

The present application provides a wound electrode assembly, a battery cell, a battery, an electrical device, and a method and manufacturing apparatus for the wound electrode assembly, and relates to the technical field of batteries. The wound electrode assembly includes an electrode sheet. The electrode sheet includes a winding ending section, the winding ending section is provided with a plurality of first tabs, the plurality of first tabs are laminated, and among the two adjacent first tabs, a width of the first tab close to a winding center of the wound electrode assembly is greater than a width of the first tab away from the winding center. Wherein, among the two adjacent first tabs, a width of the first tab close to the winding center is greater than a width of the first tab away from the winding center. That is, from inside to outside, the widths of the plurality of first tabs gradually decrease. After the winding ending section is wound, the amount of misalignment between the two adjacent first tabs is reduced, so that the total amount of misalignment shown by the plurality of first tabs is small, and a risk of a short circuit caused by the large amount of misalignment of the plurality of first tabs in a width direction of the first tabs is reduced.