ELECTRODE ASSEMBLY AND MANUFACTURING METHOD AND MANUFACTURING SYSTEM THEREFOR, BATTERY CELL, BATTERY AND ELECTRICAL DEVICE

An electrode assembly (50) and a manufacturing method and a manufacturing system therefor, a battery cell (40), a battery (10) and an electrical device. The electrode assembly (50) comprises: a first electrode sheet (51) comprising a plurality of bending sections (511) and a plurality of stacked first stacking sections (512), wherein each bending section (511) is used for connecting two adjacent first stacking sections (512), the bending section (511) is provided with a guide portion (514), and the guide portion (514) is used for guiding the bending section (511) to be bent during production; a plurality of second electrode sheets (52), wherein the second electrode sheets (52) have a polarity that is opposite to that of the first electrode sheet (51), and comprise second stacking sections (522), and the second stacking section (522) of each second electrode sheet (52) is arranged between two adjacent first stacking sections (512); and an isolating membrane (53) used for isolating the first electrode sheet (51) from the second electrode sheets (52), wherein the isolating membrane (53) comprises a plurality of isolating sections (531), and each isolating section (531) is arranged between the adjacent first stacking section (512) and second stacking section (522). The guide portions (514) can guide the first electrode sheet (51) to be bent in a preset area, so as to reduce the risk that the first electrode sheet (51) and the second electrode sheets (52) deviate from preset positions, and also to reduce precipitation of lithium.