Provided is a power storage element including: an outer collector including outer opposing walls facing each other with a gap therebetween in an opposition direction, an inner collector including inner opposing walls, and an electrode member disposed in a space defined between the opposing walls. The electrode member includes: an electrode laminate having a sheet-like shape and including a positive electrode body, a negative electrode body, and a separator interposed between the positive and negative electrode bodies. The electrode laminate forms a plurality of unit electrode layers laminated in a lamination direction perpendicular to the opposition direction, and adjacent unit electrode layers in the lamination direction are continued in a bending manner at end portions of the unit electrode layers in an extension direction. The positive electrode body and the negative electrode body are in contact with a first collector and a second collector, respectively, to be electrically connected thereto.

A wiring module to be attached to a plurality of power storage elements each having an electrode terminal and arranged in an arrangement direction, the wiring module including: an insulative sheet; and a plurality of electric wires disposed along the arrangement direction, on a surface of the sheet. The electric wires are respectively electrically connected to bus bars that are connected to electrode terminals of the plurality of power storage elements.

A wiring module to be attached to a plurality of power storage elements each having an electrode terminal, the wiring module including: a bus bar to be connected to the electrode terminals; and a flexible substrate that is flexible, wherein the bus bar has an extension portion that extends toward the flexible substrate, the extension portion has a through hole, the flexible substrate side of the through hole is closed off by the flexible substrate, the flexible substrate has a first conductive path for detecting the temperature of an object, and the first conductive path is connected to a thermistor, and the thermistor is disposed in the through hole, the through hole is filled with a resin, and the thermistor is covered with the resin.

An energy storage apparatus includes: an energy storage device; an adjacent member arranged adjacent to the energy storage device; and an adhesive material which adheres the energy storage device and the adjacent member to each other, in which the energy storage device includes an adhesive surface to be adhered to the adjacent member by the adhesive material, and the adhesive surface includes an uneven surface on which an uneven shape spreads in a planar shape.

An energy storage apparatus includes: an energy storage device including an electrode assembly in which plates are laminated; a pair of end plates disposed at a position sandwiching the energy storage device in a layering direction of the plates; and a side plate connecting the pair of end plates. At least one end plate of the pair of end plates includes: a second plate portion opposed to a first direction (X-axis direction); and an extension member that is attached to the second plate portion to extend the second plate portion in a second direction (Y-axis direction) intersecting with the first direction, the extension member being connected to the side plate in the first direction.

A multi-material electrode device is disclosed. The multi-material electrode device includes a first electrode, a dielectric material coupled to the first electrode, and a second electrode coupled to the dielectric material. In the multi-material electrode device, the first electrode and the second electrode do not include the same material.

In the embodiment, an energy storage apparatus includes: an energy storage device including a metal external terminal; and a metal bus bar that is laminated on the external terminal and welded to the external terminal. A welded portion that welds the bus bar and the external terminal is formed on the bus bar, the welded portion is extended from the bus bar to the external terminal, the external terminal includes a clad material including a first metal layer adjacent to the bus bar and a second metal layer adjacent to the first metal layer, the welded portion welds the bus bar and the first metal layer, and an end of the welded portion does not reach an interface between the first metal layer and the second metal layer.

An electrolyte is introduced into an electrochemical device, passed, via a first corrugation feature, through a first electrode of the electrochemical device, passed through an ion permeable separator, and contacted with a second electrode. The first or second electrode comprises a second corrugation feature in fluid communication with the first corrugation feature to contact the electrolyte across a portion of an active surface of the first or second electrode.

An electrolyte is introduced into an electrochemical device, passed, via a first corrugation feature, through a first electrode of the electrochemical device, passed through an ion permeable separator, and contacted with a second electrode. The first or second electrode comprises a second corrugation feature in fluid communication with the first corrugation feature to contact the electrolyte across a portion of an active surface of the first or second electrode.

A substrate-type multi-layer polymer capacitor (MLPC), including a casing, a core, a first electroplated terminal and a second electroplated terminal. The core is arranged in an inner cavity of the casing. The casing is formed by joining two first packaging plates with two second packaging plates. The first and second electroplated terminals are formed by electroplating. The first electroplated terminal is configured to cover one end of the casing to form an anode electrically led out from the core, and the second electroplated terminal is configured to the other end of the casing to form a cathode electrically led out from the core. The first packaging plate includes a substrate, an electrode plate and two metal plates. The first and second electroplated terminals are integrally sealed with the casing.