A capacitor-type power supply unit including: a positive bus to which a plurality of capacitor is connected in parallel at each positive-electrode terminal thereof with maintaining equal intervals therebetween, and extends in a parallel direction; and an negative bus to which the plurality of capacitor is connected in parallel, at each negative-electrode terminal thereof with maintaining equal intervals therebetween, and extends in the parallel direction, in which the positive bus has a positive-electrode-side external connection part that is set at a position (SD) separated from the positive-electrode first end by a range of 20% to 30% of the total length in the longitudinal direction thereof, and the negative bus has an negative-electrode-side external connection part that is set at a position (SD) separated from the negative-electrode second end by a range of 20% to 30% of the total length in the longitudinal direction thereof.

The present invention provides a process for fabricating an n-cell supercapacitor stack, including a step of providing at least n+1 identical, or substantially identical, electrically inert conductive sheets having a defined perimeter, n identical, or substantially identical, ion-permeable insulating sheets having a defined perimeter, n identical, or substantially identical, first electrodes having a defined perimeter, n identical, or substantially identical, second electrodes having a defined perimeter, and at least n matching dielectric frames having an outer perimeter, which is larger than the perimeter of the conductive sheet and the perimeter of the insulating sheet; a step of assembling the supercapacitor stack, a step of disposing an additional conductive sheet on top of the nth second electrode; and a step of attaching adjacent units onto one another, such that at least one of the frames within each unit is attached to at least one of the frames within each respective unit adjacent thereto. Further provided is a sealing system for use in fabricating a supercapacitor stack, which includes matching current collectors and separators having externally extending framing structures.

An electric energy storage device in which a cell assembly having electrode leads is installed in a metal case. The electric energy storage device includes an internal terminal formed with a support, connection ribs and thorough portions, and the electrode leads include a part of electrode leads compressed by the support and the connection ribs of the internal terminal and a part of electrode leads located at the thorough portions of the internal terminal to maintain a shape thereof.

An electric energy storage device in which a cell assembly having electrode leads is installed in a metal case. The electric energy storage device includes an internal terminal formed with a support, connection ribs and thorough portions, and the electrode leads include a part of electrode leads compressed by the support and the connection ribs of the internal terminal and a part of electrode leads located at the thorough portions of the internal terminal to maintain a shape thereof.

A connector for connecting cellular electrical elements is disclosed. The connector has a ribbon-shaped support element, a ribbon-shaped retaining element, and a contact element arranged between the support element and the retaining element.

A connector for connecting cellular electrical elements is disclosed. The connector has a ribbon-shaped support element, a ribbon-shaped retaining element, and a contact element arranged between the support element and the retaining element.

A rechargeable battery includes: an electrode assembly including first and second electrodes including coated regions and uncoated region tabs, the first and second electrodes arranged and spiral-wound at opposite sides of a separator; a case to accommodate the electrode assembly; a cap plate to be combined to an opening of the case; an insulator to be arranged between the electrode assembly and the cap plate; electrode terminals to be arranged at the cap plate and to be electrically connected to the uncoated region tabs; and current collecting tabs to connect the uncoated region tabs and the electrode terminals and to be arranged between the insulator and the electrode assembly, and the current collecting tab includes an elastic protrusion protruding in a direction toward the insulator.

A rechargeable battery includes: an electrode assembly including first and second electrodes including coated regions and uncoated region tabs, the first and second electrodes arranged and spiral-wound at opposite sides of a separator; a case to accommodate the electrode assembly; a cap plate to be combined to an opening of the case; an insulator to be arranged between the electrode assembly and the cap plate; electrode terminals to be arranged at the cap plate and to be electrically connected to the uncoated region tabs; and current collecting tabs to connect the uncoated region tabs and the electrode terminals and to be arranged between the insulator and the electrode assembly, and the current collecting tab includes an elastic protrusion protruding in a direction toward the insulator.

A battery and supercapacitor hybrid can include a first hybrid electrode. The first hybrid electrode can include a first electrode, a first current collector, and a first supercapacitor. The battery and supercapacitor hybrid can further include a second hybrid electrode and a separator interposed between the first hybrid electrode and the second hybrid electrode.

A battery and supercapacitor hybrid can include a first hybrid electrode. The first hybrid electrode can include a first electrode, a first current collector, and a first supercapacitor. The battery and supercapacitor hybrid can further include a second hybrid electrode and a separator interposed between the first hybrid electrode and the second hybrid electrode.