The extraction portion is configured to include a first piece portion extending in a direction orthogonal to the first direction from an outer edge portion provided on an edge of the flat plate portion when viewed from the first direction, a second piece portion extending in the first direction and having an attachment portion that attaches the extraction portion, and a bent portion being where a plate material configuring the extraction portion bends, and connecting the first piece portion and the second piece portion. A spring portion that is configured to relieve a stress acting on the extraction portion is provided between the connection portion to the outer edge portion and the attachment portion in the extraction portion. The spring portion includes at least a first bent portion being where the plate material bends other than at the bent portion.

A battery manufacturing method includes forming a unit cell having a positive electrode that is obtained by a positive electrode active material layer containing an electrolytic solution being disposed on a positive electrode current collector, a negative electrode that is obtained by a negative electrode active material layer containing an electrolytic solution being disposed on a negative electrode current collector, and a separator interposed between the positive electrode and the negative electrode. The battery manufacturing method further includes applying pressure to one unit cell or with two or more stacked unit cells from the stacking direction, and charging the one unit cell or the two or more stacked unit cells after applying of the pressure. The method is performed such that the positive electrode and the negative electrode are formed without an application film being subjected to a drying process performed through heating.

A battery includes: an electrode body including a positive electrode having a positive electrode active material layer formed on a positive electrode collector and a negative electrode having a negative electrode active material layer formed on a negative electrode collector. At one end of the electrode body, a positive electrode collector laminated part, in which a positive electrode collector exposed part is stacked, is present. At another end thereof, a negative electrode collector laminated part, in which a negative electrode collector exposed part is stacked, is present. The positive electrode collector laminated part and the negative electrode collector laminated part are divided into groups while the groups being shifted in position so as not to overlap on a same line in the stacking direction in the electrode body. The groups are mutually independently integrated in one unit, and all tip parts of the groups are joined with one collector terminal.

The power storage device includes a power storage module and a conductive plate. The power storage module includes an electrode laminate including current collectors stacked on each other in a first direction. At least one of the positive electrode terminal electrode, the negative electrode terminal electrode, and the bipolar electrode includes an active material layer including grooves arranged in a second direction orthogonal to the first direction, and the grooves extend in a third direction crossing the second direction. The conductive plate includes an outer surface including depressions depressed in the first direction and extending in the second direction, the current collector arranged at the stack end of the electrode laminate includes an exposed face in contact with the outer surface, the exposed surface includes protrusions overlapping the active material layer in the first direction, and the protrusions protrude in the first direction and extend in the third direction.

Provided is a terminal assembly for an electrochemical battery comprising a terminal connector; a conductive flat-plate with an electrically conducting perimeter; an electrically insulating tape member; and a terminal bipolar electrode plate. The electrically insulating tape member is in between the conductive flat-plate and the terminal bipolar electrode plate such that the electrically insulating tape member does not cover the entire surface area of the conductive flat-plate. The electrically conducting perimeter enables bi-directional uniform current flow through the conductive flat-plate between the terminal connector and the terminal bipolar electrode plate. Also provided is a battery frame member for a static rechargeable battery comprising a liquid diversion system; a gutter; a sealing member; a gas channel; and a ventilation hole. Also provided is a static rechargeable electrochemical battery comprising a pair of terminal assemblies, at least one bipolar electrode interposed between the pair of terminal assemblies, and a battery frame member.

A solid-state battery comprising at least one electrode stack that includes a solid-state electrolyte, cathode, and optionally an anode. The electrolyte can be an oxygen-free and carbon-free solid-state and alkali-conducting electrolyte that is processable in oxygen-containing atmospheres with room temperature ionic conductivity greater than 1 mS/cm and room temperature shear modulus greater between 1 GPa and 20 GPa. The cathode can be composed of an electrochemically-active material from Group 16 of the periodic table having a high surface area greater than 10 m2/g and contact with a conductive carbon material. The anode can be comprised of any material that can reversibly accommodate group 1 or group 2 elements or the base group 1 or group 2 element. The solid-state battery can utilize a solid-state electrolyte having a lithium-conducting sulfide electrolyte, of the formula U6PS5X (X=Cl, Br, I) with argyrodite structure and exhibiting ionic conductivity over 1 mS cm-1 at room temperature.

A battery includes a stacked arrangement of electrochemical cells. Each electrochemical cell is free of a cell housing and includes a bipolar plate having a substrate, a first active material layer formed on a first surface of the substrate, and a second active material layer formed on a second surface of the substrate. Each cell includes a solid electrolyte layer that encapsulates at least one of the active material layers, and electrically insulates a given cell of the cell stack from an adjacent cell of the cell stack including along a periphery of the cells.

An electricity storage device according to one embodiment is an electricity storage device in which a plurality of bipolar electrodes in which a positive electrode layer is provided on one surface of a collector plate and a negative electrode layer is provided on the other surface of the collector plate are stacked via separators and includes a plurality of spacers arranged along peripheral edges of the collector plates between the respective collector plates adjacent to each other in a stacking direction and a resin frame covering outer peripheries of the plurality of spacers.

A battery includes positive and negative electrode terminals, positive and negative electrode layers, a positive electrode current collector electrically connected to the positive electrode layer and the positive electrode terminal, a negative electrode current collector electrically connected to the negative electrode layer and the negative electrode terminal, a bipolar current collector positioned between the positive and negative electrode current collectors, a solid electrolyte layer positioned between the positive and negative electrode current collectors, and an insulating sealing member positioned between the positive and negative electrode current collectors and surrounding the solid electrolyte layer, wherein the positive electrode current collector and the negative electrode terminal are electrically isolated with a gap, the negative electrode current collector and the positive electrode terminal are electrically isolated with a gap, and the bipolar current collector is electrically isolated from the positive and negative electrode terminals with gaps.

A battery according to the present disclosure includes a plurality of cells electrically connected in parallel, a positive electrode terminal, and a negative electrode terminal, each of the plurality of cells including a positive electrode layer, a negative electrode layer, a positive electrode current collector electrically connected to each of the positive electrode layer and the positive electrode terminal, a negative electrode current collector electrically connected to each of the negative electrode layer and the negative electrode terminal, and a solid electrolyte layer positioned between the positive electrode current collector and the negative electrode current collector, wherein the positive electrode current collector and the negative electrode terminal are electrically isolated from each other with a gap, and the negative electrode current collector and the positive electrode terminal are electrically isolated from each other with a gap.