A sheet feeding device includes a rotation shaft that rotates in synchronism with rotation of the feed member, a spring clutch that is deformable to be in a tightened state and to be in a loosened state, and a pressure-receiving member that becomes displaced from a first position to a second position by receiving a pressing force that is generated as the spring clutch swings. The spring clutch starts to be loosened from the tightened state as a first end portion of the spring clutch becomes engaged with an engagement portion when the pressure-receiving member is displaced to the second position.

A sheet feeding device includes a rotation shaft that rotates in synchronism with rotation of the feed member, a spring clutch that is deformable to be in a tightened state and to be in a loosened state, and a pressure-receiving member that becomes displaced from a first position to a second position by receiving a pressing force that is generated as the spring clutch swings. The spring clutch starts to be loosened from the tightened state as a first end portion of the spring clutch becomes engaged with an engagement portion when the pressure-receiving member is displaced to the second position.

A method for producing accumulators which each have at least one cell stack, wherein to produce the cell stack, individual sheets are stacked via a stacking device in that the individual sheets are fed one after the other via a conveying line of the stacking device to a stacking wheel arrangement of the stacking device. The stacking wheel arrangement has two stacking wheels which are arranged in two planes one above the other. A predefined number of successive individual sheets are fed to one of the two stacking wheels. The predefined number corresponds to the number of individual sheets in a finished cell stack. A plurality of the individual sheets following the predefined number of individual sheets are fed to the other of the two stacking wheels.

A blanks storage unit for storing a stack of blanks includes: inlet and outlet sections of the blanks; a feed device having a support device to restingly receive the blanks of the stack of blanks; and a feed element for moving the blanks along a feed trajectory from the inlet section towards the outlet section. The unit also includes a guide device. At least one of the support device or the guide device is movable with respect to the other along a lifting trajectory between a transport configuration, in which said support device defines in the section a feed plane of the blanks and the blanks rest on the support device, and a sliding configuration in which the guide device is at least partially lifted with respect to the support device and the blanks rest on the guide device to be guided, sliding along the section towards the outlet.