A secondary battery for cycling between a charged and a discharged state, wherein a 2D map of the median vertical position of the first opposing vertical end surface of the electrode active material in the X-Z plane, along the length L.sub.E of the electrode active material layer, traces a first vertical end surface plot, E.sub.VP1, a 2D map of the median vertical position of the first opposing vertical end surface of the counter-electrode active material layer in the X-Z plane, along the length L.sub.C of the counter-electrode active material layer, traces a first vertical end surface plot, CE.sub.VP1, wherein for at least 60% of the length L.sub.c of the first counter-electrode active material layer (i) the absolute value of a separation distance, S.sub.Z1, between the plots E.sub.VP1 and CE.sub.VP1 measured in the vertical direction is 1000 ?m?|S.sub.Z1|?5 ?m.

Infiltration of an electrolyte solution into a through hole is prevented or minimized to suppress the occurrence of a liquid junction, so that battery performance is less likely to deteriorate, and the life is prolonged. A cell member includes a positive electrode, a negative electrode, and an electrolyte layer interposed therebetween. The cell member is stacked and disposed at an interval. A space forming member includes a substrate and a frame body. A through hole penetrates between a positive electrode side and a negative electrode side in the space forming member, and a conductor inserted into the through hole electrically connects them. A liquid junction prevention member is provided in a vicinity of an opening on the positive electrode side, a vicinity of an opening on the negative electrode side, or both.

A manufacturing method of a power storage module includes a stacking process of stacking a plurality of bipolar electrodes, a positive terminal electrode, and a negative terminal electrode, a sealing process of forming a sealing member that seals a space on a peripheral edge portion of each electrode in an electrode laminate such that sealing member is formed while holding a liquid injection member, an insulation inspection process of inspecting an insulation state between a positive electrode uncoated portion and a negative electrode uncoated portion, by applying a voltage to electrode laminate in a state where the inside of sealing member is depressurized from liquid injection member, a liquid injection process of supplying an electrolyte solution from liquid injection member into sealing member after the insulation inspection process, and a charging process of charging electrode laminate.

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 an edge insulating device that is disposed between the peripheral edges of the substrates of each pair of adjacent cells. A support frame surrounds the cell stack and is configured to receive and support the outer peripheral edge of the edge insulating device of each cell.

A main object of the present disclosure is to provide a method for producing a battery in which the degrade of sealability in a liquid injection frame is inhibited. The present disclosure achieves the object by providing the method including: a preparing step of preparing an electrode member that includes an electrode layered body including a plurality of electrode layered in a z axis direction, and a liquid injection frame made of a resin arranged in a side surface of the electrode layered body; a liquid injection step of injecting a liquid electrolyte into the electrode layered body in the electrode member via the liquid injection frame; a temporary sealing step of temporary sealing the liquid injection frame by arranging a gas pack to cover an entire outer periphery of the liquid injection frame when viewed from an x axis direction orthogonal to the z axis direction; a gas storing step of storing a gas generated due to charging or aging in a space inside the gas pack; a degassing step of degassing the gas by opening the gas pack after the gas storing step; and a sealing step of sealing the liquid injection frame with a sealing member.

A stack-type electrode assembly includes a lowermost electrode in a lowermost portion of the electrode assembly; an uppermost electrode in an uppermost portion of the electrode assembly; at least one unit stack between the lowermost electrode and the uppermost electrode, the at least one unit stack comprising a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode; and a plurality of separators between the lowermost electrode and unit stack, between the unit stacks, and between the unit stack and the uppermost electrode.

Provided is a lithium ion secondary battery including: a positive electrode having a positive electrode active material layer disposed on a positive electrode current collector; a negative electrode having a negative electrode active material layer disposed on a negative electrode current collector; and an electrolyte solution. The positive electrode active material layer includes a positive electrode active material containing a lithium nickel composite oxide. The positive electrode contains an alkaline component by less than 1% relative to a weight of the positive electrode active material. The electrolyte solution includes an additive containing a cyclic carbonate additive with an unsaturated bond. A molar ratio of the cyclic carbonate additive with an unsaturated bond relative to a total molar amount of the additive is 78% or less.

A secondary battery for cycling between a charged and a discharged state, wherein a 2D map of the median vertical position of the first opposing vertical end surface of the electrode active material in the X-Z plane, along the length L.sub.E of the electrode active material layer, traces a first vertical end surface plot, E.sub.VP1, a 2D map of the median vertical position of the first opposing vertical end surface of the counter-electrode active material layer in the X-Z plane, along the length L.sub.C of the counter-electrode active material layer, traces a first vertical end surface plot, CE.sub.VP1, wherein for at least 60% of the length L.sub.c of the first counter-electrode active material layer (i) the absolute value of a separation distance, S.sub.Z1, between the plots E.sub.VP1 and CE.sub.VP1 measured in the vertical direction is 1000 ?m?|S.sub.Z1|?5 ?m.

Disclosed herein is an electronic device including a substrate, with an active layer stack on the substrate. A cover is on the active layer stack and has a surface area greater than that of the active layer so as to encapsulate the active layer stack. A conductive pad layer is on the cover. At least one conductive via extends between the active layer stack and the conductive pad layer.

A main object of the present disclosure is to provide a method for producing a method for producing a battery module wherein batteries are well joined. The present disclosure achieves the object by providing the method including: a preparing step of preparing a plurality of battery; a layered body forming step of forming a layered body by arranging an intermediate member between a pair of the battery adjacent to each other in a thickness direction; and a joining step of joining the pair of the battery in the layered body using an adhesive agent, wherein the intermediate member includes a frame structure when viewed from the thickness direction; the intermediate member includes a communicating part that communicates an inside and an outside of the frame structure; and the joining step includes an injecting treatment of injecting the adhesive agent into the inside of the frame structure via the communicating part.