A sheet cutting and bending apparatus for cutting a wavy sheet and forming trapezoidal notches required for installation includes a base, two cutters at an end of the base, and a force applying mechanism for driving the two cutters. A knife of the cutters has no handle but just has a curved force receiving edge at the rear edge. The force applying mechanism has two rocker aims driven by a rocker rod and a force applying rod bridging between the two rocker arms for abutting a force receiving edge of the knife to produce a shear force and pushing the knife efficiently to cut two incisions at an edge of the sheet. In addition, a bending mechanism is linked with the force applying mechanism and provided for flipping a plate between the two incisions inwardly to form trapezoidal notches required for installation at the edge of the sheet.

A push-breaking device has: a placement stand; a pressing mechanism; and at least one cutting blade tool. By the cutting blade tool, which moves along a first direction with respect the placement stand, the device pushes and bends, and breaks, a portion of a protruding region, which protrudes outward from the placement stand and the pressing mechanism, of the layered electrode sheet, which is pressed by the pressing mechanism in a second direction. An angle of a blade portion of the cutting blade tool with respect to the second direction is 15-30. An angle of the blade portion with respect to the first direction is an acute angle. A length, in the second direction, of a clearance between the blade portion and an end, at the cutting blade tool side, of the placement stand is 10%-35% of a length of the layered electrode sheet in the first direction.