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

This application discloses an electrode assembly and related battery, device, manufacturing method, and manufacturing device. The electrode assembly according to embodiments of this application includes: a first electrode plate and a second electrode plate that are of opposite polarities, where an active material region of the first electrode plate and an active material region of the second electrode plate are wound to form a body portion, a non-active material region of the first electrode plate or a non-active material region of the second electrode plate is wound to form a tab, and the tab includes a bend portion bent against the body portion; and a guide piece. At least a part of the guide piece is located in the bend portion, and the guide piece is configured to guide an electrolytic solution into an interior of the body portion. The electrode assembly according to embodiments of this application improves the infiltration effect of the electrolytic solution for an active material, and effectively enhances battery performance when applied to the battery.