WOUND-TYPE ELECTRODE ASSEMBLY, BATTERY CELL, BATTERY, AND ELECTRIC DEVICE

The present application belongs to the technical field of battery manufacturing and relates to a wound-type electrode assembly, a battery cell, a battery, and an electric device. The wound-type electrode assembly comprises a first electrode sheet; the first electrode sheet comprises a plurality of first electrode tabs; the plurality of first electrode tabs are stacked once the first electrode sheet is wound; the width of the plurality of first electrode tabs gradually increases from an inner ring to an outer ring of the first electrode sheet; the height of the first electrode tabs (1211) is H1, and the width of a base portion of the first electrode tabs (1211) is L1, where 0.3 < H1/L1 < 1. The service life of the battery cell can be prolonged once the battery cell is assembled. La présente demande se rapporte au domaine technique de la fabrication de batterie et concerne un ensemble électrode de type enroulé, une cellule de batterie, une batterie et un dispositif électrique. L'ensemble électrode de type enrou