An all-solid-state battery includes: a positive electrode layer including a positive electrode current collector and a positive electrode mixture layer; a negative electrode layer including a negative electrode current collector and a negative electrode mixture layer; and a solid electrolyte layer. The solid electrolyte layer is disposed between the positive electrode mixture layer and the negative electrode mixture layer. On a plane perpendicular to a stacking axis, an area of the negative electrode mixture layer is larger than an area of the positive electrode mixture layer. On the stacking axis, an entire portion of the positive electrode mixture layer overlaps a portion of the negative electrode mixture layer.

The present invention relates to a method of manufacturing an electrode assembly, the method including: preparing an electrode laminate including at least one negative electrode, at least one positive electrode, and at least one separation film; generating a separation film assembly by bonding remaining portions of the separation film positioned in regions not corresponding to shapes of the negative electrode and the positive electrode; and cutting the separation film assembly so as to correspond to the shapes of the negative electrode and the positive electrode, and an electrode assembly manufactured by the method.

A laminated battery includes a stacked electrode group including a positive electrode, a negative electrode, a dummy electrode, a first separator interposed between the positive and negative electrodes, and a second separator interposed between the positive and/or negative electrode and the dummy electrode; and an electrolyte. At least one positive electrode and/or at least one negative electrode includes a single-sided electrode including a current collector and an electrode active material layer formed on a first surface of the current collector. A second surface of the current collector is exposed. The dummy electrode is a metal foil facing the second surface of the current collector of the single-sided electrode and having a polarity opposite to that of the single-sided electrode. Adhesive strengths F.sub.1 and F.sub.2 on both sides of the first separator and adhesive strengths F.sub.3 and F.sub.4 on both sides of the second separator satisfy F.sub.1+F.sub.2>F.sub.3+F.sub.4.

An electronic device includes a base substrate, and a plurality of battery substrates constructed from mica and being attached to the base substrate. An aggregate area of the base substrate is greater than an aggregate area of the plurality of battery substrates. The electronic device also includes a plurality of active battery layers, each active battery layer being attached to a different respective battery substrate, with each active battery layer having a smaller area than its corresponding battery substrate. A film is disposed over the plurality of active battery layers and sized such that the film extends beyond each active battery layer to contact each battery substrate, and such that the film extends beyond each battery substrate to contact the base substrate.

A positive collector and a negative collector are arranged such that connecting surfaces of the positive collector and the negative collector that are connected to collection groups face an electrode assembly. An insulator is arranged in a case between the positive and negative collectors and a terminal wall of the case. The insulator separates an opposing surface from the terminal wall. This reduces useless space and insulates the collectors and the power collection groups from the case.

A miniature electrochemical cell having a volume of less than 0.5 cc is described. The cell casing comprises an open-ended ceramic container having first and second via holes providing respective first and second electrically conductive pathways extending through the container. A metal lid secured to the open-end of the container by a gold seal provides the cell casing. An electrode assembly housed inside the casing comprises a cathode active material deposited on an inner surface of the ceramic container in contact with a current collector in electrical continuity with one of the conductive pathways. A solid electrolyte, preferably of LiPON (Li.sub.xPO.sub.yN.sub.z), is deposited on the cathode active material followed by an anode active material in contact with the other conductive pathway. The first and second conductive pathways can comprise platinum or gold. That way, the first and second conductive pathways serve as negative and positive terminals for the cell. The negative and positive terminals are configured for electrical connection to a load.

A cell includes a case designed to form a housing, an assembly of stacked electrodes placed inside the housing and including one or more units each having a positive electrode, a negative electrode, a separator between the positive and negative electrodes and an electrolyte. The assembly is held together, and at least each negative electrode of the one or more units includes one or more notches, vertically aligned along the height of the assembly so to design a substantially flat contact surface.

A nonaqueous electrolyte secondary battery includes a rectangular electrode group, a nonaqueous electrolyte, a band-shaped positive electrode collector lead, a band-shaped negative electrode collector lead, a flat plate-shaped positive terminal, a flat plate-shaped negative terminal and an outer body.

Provided is a light-transmissive battery that transmits visible light. A light-transmissive battery includes a positive electrode including an insulating transparent cover body and a positive-electrode current collector layer and a positive electrode layer sequentially stacked over the insulating transparent cover body; a negative electrode including an insulating transparent cover body and a negative-electrode current collector layer and a negative electrode layer sequentially stacked over the insulating transparent cover body; and a transparent electrolyte disposed between the positive electrode layer and the negative electrode layer that are opposed to each other. Each of the positive-electrode current collector layer, the negative-electrode current collector layer, the positive electrode layer, and negative electrode layer is formed to a thickness that allows the layer to transmit visible light.

An energy storage module may include first and second energy storage devices each including: an electrode assembly; an external member accommodating the electrode assembly therein; and electrode leads joined to electrodes provided in the electrode assembly, in which the first and second energy storage devices are stacked in a vertical direction V so that a positive electrode lead of the first energy storage device and a negative electrode lead of the second energy storage device are electrically connected to each other.