ELECTRODE PLATE, ELECTROCHEMICAL DEVICE, AND ELECTRICAL DEVICE

An electrode plate, including a base portion and a tab. The base portion includes a first edge connected to the tab. The tab includes an extension portion and a connecting portion. The extension portion includes a first side edge and a second side edge. The connecting portion includes a third side edge and a fourth side edge. An extension line of the first side edge intersects the first edge at a first intersection point. An angle between a ray from the first intersection point to a first connection point between the third side edge and the first side edge and a ray from the first intersection point to a fourth connection point between the fourth side edge and the first edge is α, α