ELECTRODE ASSEMBLY AND ITS FORMING METHOD AND MANUFACTURING SYSTEM, SECONDARY BATTERY, BATTERY MODULE AND DEVICE

The disclosure relates to an electrode assembly and its forming method and a manufacturing system, a secondary battery, a battery module and a device. The electrode assembly includes: a first electrode plate including a plurality of bending sections and a plurality of stacked first stacking sections, each bending section being configured to connect two adjacent first stacking sections, herein the bending section includes a guiding portion for guiding the bending section to be bent during production; and a second electrode plate with a polarity opposite to that of the first electrode plate, the second electrode plate including a plurality of second stacking sections, and each second stacking section being disposed between two adjacent first stacking sections. The electrode assembly according to embodiments of the disclosure can ensure that the first electrode plate and the second electrode plate are at predetermined positions after being stacked, thereby ensuring that the secondary battery has a good electrochemical performance.