To provide a secondary battery that can be mounted on a substrate and can easily select a voltage to be output in manufacture and a manufacturing method thereof. A secondary battery in which small cells with substantially the same form are stacked and whose voltage to be output is easily selected in manufacture by changing the number of stacked layers is manufactured. In the cell, an electrolytic solution including a spacer and a polymer is used to keep at least a certain distance between the positive electrode active material layer and the negative electrode active material layer with the spacer. Furthermore, the electrolytic solution is made to gelate by the polymer to be an electrolytic solution that can be formed in the form of a sheet. Furthermore, the positive electrode active material layer and the negative electrode active material layer are formed using a printing method typified by screen printing.

Provided herein is an electrochemical cell designed for high current discharge, which includes a cathode strip, an anode strip, and at least two separator strips, being longitudinally stacked to form an electrodes set that is folded into at least four segments and designed to exhibit a ratio of its nominal capacity per its active area lower than 12 mAh/cm.sup.2, such that the cell is characterized by a discharge efficiency at room temperature of at least 30% to a cut-off voltage of of its original voltage at a discharge current of 1,250 m A. Also provided are process of manufacturing, and uses of the cell, which is particularly useful in high drain-rate applications as charging a cellular phone.

A continuous electric/electronic device and a method of manufacturing the same are disclosed. The method of manufacturing a continuous electric/electronic device having a serial connection structure comprises (a) disposing a first electrode current collection unit, (b) disposing first organicinorganic material in regard to the first electrode current collection unit, (c) laminating a first area of a second electrode current collection unit on the disposed first organicinorganic material, (d) disposing second organicinorganic material in regard to a second area of the second electrode current collection unit and (e) laminating a third electrode current collection unit on the disposed second organicinorganic material. Here, the first area and the second area of the second electrode current collection unit operate as current collection units having different polarity in regard to adjoining first organicinorganic material and second organicinorganic material.

The present invention relates to an electric double layer capacitor basic cell having a separator-including electrode, the cell having improved conductivity of an electric double layer capacitor basic cell by using a separator-including electrode without a separation membrane so as to have excellent electric energy storage and output performance. In addition, the present invention relates to an electric double layer capacitor cell having a separator-including electrode, the cell allowing a plurality of electrode pairs to be stacked such that current collector plates of the same polarity are connected and allowing the current collector plates of the plurality of stacked electrode pairs connected while having the same polarity to be mutually connected, thereby having improved electric energy storage density and output performance of an electric double layer capacitor cell. In addition, the present invention relates to an energy storage device in which electric double layer capacitor cells having a separator-including electrode are connected in series, the device having a plurality of electric double layer capacitor cells connected in series without an external separate circuit board so as to reduce characteristic distortion caused by an increase in contact resistance, thereby remarkably reducing the necessity of a separate correction circuit. The electric double layer capacitor basic cell having a separator-including electrode of the present invention can be formed by using a current collector plate and an electrode, which comprises a separator convexly protruding from the current collector plate with a continuous pattern of a certain design so as to form a convex shape having a pattern repeated in lengthwise and widthwise directions of the current collector plate, or convexly protruding with a pattern continuous in the lengthwise direction of the current collector plate, and having a pattern repeated in the widthwise direction of the current collector plate. The electric double layer capacitor basic cell having a separator-including electrode, according to the present invention, reduces the distance between facing electrodes so as to improve conductivity over that of a conventional electric double layer capacitor basic cell, thereby having excellent electric energy storage and output performance. The electric double layer capacitor cell having a separator-including electrode, of the present invention, allows electrode pairs of the plurality of double layer capacitor basic cells having a separator-including electrode, of the present invention, to be stacked by alternating such that the electrode pairs of the same polarity are connected by adjoining and comin

In some examples, an assembly for a medical device. The assembly includes a first electrode comprising a first conductive tab, and a first current collector; a second electrode including a second conductive tab, a second current collector, a third current collector, and at least one connector connecting the second current collector to the third current collector, wherein the second current collector and the third current collector are folded over each other about the at least one connector, wherein the second conductive tab is coupled to the second current collector, and wherein the third current collector is electrically coupled to second conductive tab via the at least one connector and the second current collector; and a foil package being sealed over the first conductive tab and the second conductive tab to partially enclose the first electrode and second electrode.

The energy storage device of the present invention includes: a negative electrode including a negative composite layer and a composite layer non-forming portion on both surfaces of a negative electrode current collecting foil respectively; a positive electrode including a positive composite layer on both surfaces of a positive electrode current collecting foil respectively; and a separator including an insulation layer which faces the positive electrode and is interposed between the negative electrode and the positive electrode. The negative electrode, the separator and the positive electrode are stacked in a first direction. The negative composite layer and the composite layer non-forming portion are disposed adjacently to each other in a second direction orthogonal to the first direction on the respective surfaces of the negative electrode. The separator is configured to project in the second direction from the positive composite layer at one end of the separator in the second direction. The separator contains a first bent portion including a recessed surface on a surface thereof which faces the negative electrode at a portion projecting in the second direction from the negative composite layer. The first bent portions of the separators disposed adjacently to each other in the first direction are brought into contact with each other.

The energy storage device of the present invention includes: a negative electrode including a negative composite layer and a composite layer non-forming portion on both surfaces of a negative electrode current collecting foil respectively; a positive electrode including a positive composite layer on both surfaces of a positive electrode current collecting foil respectively; and a separator including an insulation layer which faces the positive electrode and is interposed between the negative electrode and the positive electrode. The negative electrode, the separator and the positive electrode are stacked in a first direction. The negative composite layer and the composite layer non-forming portion are disposed adjacently to each other in a second direction orthogonal to the first direction on the respective surfaces of the negative electrode. The separator is configured to project in the second direction from the positive composite layer at one end of the separator in the second direction. The separator contains a first bent portion including a recessed surface on a surface thereof which faces the negative electrode at a portion projecting in the second direction from the negative composite layer. The first bent portions of the separators disposed adjacently to each other in the first direction are brought into contact with each other.

A rechargeable battery includes positive and negative electrodes and first and second separator portions. The positive electrode includes a positive metal foil and a positive active material layer. A positive active material-free portion is formed on a first end of the positive electrode. The positive active material layer extends to a second end. The negative electrode includes a negative metal foil and a negative active material layer. A negative active material-free portion is formed on a third end of the negative electrode. The negative active material layer extends to a fourth end. Each of the first and second separator portions includes a strong bonding portion and a weak bonding portion. The strong bonding portion is located proximate to the first end and extends along the first end. The weak bonding portion is located proximate to the second end and extends along the second end.

A rechargeable battery includes positive and negative electrodes and first and second separator portions. The positive electrode includes a positive metal foil and a positive active material layer. A positive active material-free portion is formed on a first end of the positive electrode. The positive active material layer extends to a second end. The negative electrode includes a negative metal foil and a negative active material layer. A negative active material-free portion is formed on a third end of the negative electrode. The negative active material layer extends to a fourth end. Each of the first and second separator portions includes a strong bonding portion and a weak bonding portion. The strong bonding portion is located proximate to the first end and extends along the first end. The weak bonding portion is located proximate to the second end and extends along the second end.

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.