Abstract: The present invention provides a solid-state battery cell and a solid-state battery module including the same. The solid-state battery cell includes: a laminate including a positive electrode layer, a negative electrode layer, and a solid electrolyte layer present between the positive electrode layer and the negative electrode layer; a positive electrode tab connected to the positive electrode layer; a negative electrode tab connected to the negative electrode layer; and a pair of conductive clamping plates clamping the laminate from both sides in a laminating direction of the laminate. One of the pair of clamping plates is electrically connected to the positive electrode tab, and the other clamping plate is electrically connected to the negative electrode tab.

Abstract: What is provided is a solid state battery and a solid state battery manufacturing method capable of more reliably preventing short-circuiting. A solid state battery includes: a first electrode piece in which a first electrode active material layer is formed on a first current collector layer; a second electrode piece in which a second electrode active material layer is formed on a second current collector layer; and a bag-shaped solid electrolyte layer which accommodates the first electrode piece, wherein the first electrode piece accommodated in the bag-shaped solid electrolyte layer and the second electrode piece are laminated so as to overlap each other in a plan view so that the first electrode active material layer and the second electrode active material layer are disposed so as to face each other with the solid electrolyte layer interposed therebetween.

Abstract: Provided is a battery pack having excellent energy density and durability. A battery pack 100 includes solid-state battery modules 102 each configured such that a plurality of solid-state battery cells containing a solid electrolyte is stacked and electrolytic solution-based battery modules 32 each configured such that a plurality of electrolytic solution-based battery cells containing an electrolytic solution is stacked, the solid-state battery modules 102 and the electrolytic solution-based battery modules 32 being combined and housed in the pack. The solid-state battery modules 102 are arranged to surround the electrolytic solution-based battery modules 32.

Abstract: Provided is a secondary battery and a comb-type electrode. A negative electrode layer sheet formed by stacking a negative electrode active material layer on two surfaces of a negative electrode current collector and a positive electrode layer sheet formed by stacking a positive electrode active material layer on two surfaces of a positive electrode current collector are alternately stacked, and an electrolyte body is interposed between the negative electrode layer sheet and the positive electrode layer sheet adjacent in a stacking direction. Each of the negative electrode current collector and the positive electrode current collector includes a bent connecting part sandwiching a notch part and formed by bending two sides in directions opposite to each other. The bent connecting parts of the negative electrode current collectors adjacent in the stacking direction and the bent connecting parts of the positive electrode current collectors adjacent in the stacking direction are connected.

Abstract: The disclosure provides a laminated battery that can realize a laminated structure in which electrode composite material portions are not displaced, can simplify the manufacturing process, and has improved production yield, and provides a manufacturing method thereof. A positive electrode structure and a negative electrode structure in comb shapes are respectively produced with electrode composite material layers positioned in advance, and these are fitted to produce a laminate serving as a battery.

Abstract: A battery unit includes at least one battery module that includes at least one battery cell, at least one battery heat flow detector that detects a heat flow of the at least one battery cell and the battery unit, at least one reference heat flow detector that detects a heat flow of the battery unit as a reference heat flow, and a battery state estimator that estimates a state of the at least one battery cell, based on a heat flow of the at least one battery cell given by subtracting the reference heat flow detected by the at least one reference heat flow detector from the heat flow detected by the at least one battery heat flow detector. The at least one reference heat flow detector is disposed in the battery unit at a location where temperature fluctuation is small and heat capacity is large.

Abstract: The present invention provides a battery cell capable of uniformly holding an electrode laminate and speeding up a manufacturing process. A battery cell includes an electrode laminate including positive and negative electrodes and an electrolyte layer, in which the positive and negative electrodes are alternately laminated with the electrolyte layer interposed between them; and a tube-shaped insulating member that is heat-shrinkable and holds the electrode laminate, wherein the insulating material has at least two folded parts for positioning a member disposed in the internal space of the insulating member. The insulating member preferably has two portions each between the two folded parts, and the two portions are preferably equal in circumferential length.

Abstract: A battery cell capable of: holding an electrode laminate uniformly and improving lamination dislocation as well as the durability of an electrode is provided. A battery cell includes an electrode laminate in which a positive electrode and a negative electrode are alternately laminated via an electrolyte layer. The battery cell includes a tube-shaped insulating member that holds the electrode laminate, and the insulating member is heat-shrinkable mainly in a direction parallel to the lamination direction of the electrode laminate. The insulating member preferably has a heat shrinkage percentage of to ?5% to 5% in a direction in which the current collector tab of the electrode laminate extends.

Abstract: Provided is an all-solid-state battery cell by which a battery module with good cooling efficiency can be obtained. The battery cell has a configuration in which an all-solid-state battery cell not using an electrolytic solution is used, a heat transfer material is disposed on a lower surface of an electrode laminate inside the battery cell, and heat is conducted from the heat transfer material through an exterior material to be dissipated.

Abstract: The disclosure provides a cell structure of a solid state battery capable of uniformly holding a solid state battery cell in a battery case and a manufacturing method of a solid state battery. In a process of manufacturing a can cell of the solid state battery, a shock absorber is disposed in the battery case after the solid state battery cell is inserted into the battery case and before a can lid is welded. Then, the lid is provided to seal the case. At the time of sealing, the solid state cell and a terminal are fastened by using an engaging member, and the airtightness is improved.

Abstract: A pouch cell includes: a storage discharge element having a substantially cuboid shape; a power collection tab lead that is thinner than the storage discharge element and is externally drawn from the storage discharge element; and an exterior film that packages the storage discharge element in a state where the power collection tab lead is externally drawn, wherein the exterior film includes: a holding part that sandwiches the power collection tab lead from front and rear surfaces in a thickness direction; a fold part along an outline of the holding part; and a reinforcement part that is folded from the fold part and is joined to at least the holding part, the fold part is joined to a side portion that extends in a thickness direction of the holding part, the reinforcement part is folded back in a direction of sandwiching the power collection tab lead by the fold part, and the reinforcement part includes an extension portion that extends from the fold part along a drawn direction of the power collection tab l

Abstract: A pouch cell includes: a charging and discharging element; a current collecting tab lead configured to be thinner than the charging and discharging element and drawn out of the charging and discharging element to an outside; an exterior film configured to wrap the charging and discharging element in a state in which the current collecting tab lead is drawn out to an outside; a clamping part configured to clamp the current collecting tab lead from the exterior film by front and back surfaces in a thickness direction; and an airtightness maintaining member mounted to cover an end portion of the clamping part, wherein the airtightness maintaining member is separated from the exterior film, has a slit through which the current collecting tab lead is drawn out to the outside and has a bent part which covers an end portion of the clamping part, and a dimension of the bent part in the thickness direction of the clamping part is larger than a width dimension of the slit.

Abstract: A pouch cell includes: a storage discharge element; and an exterior film that packages the storage discharge element, wherein the storage discharge element includes a corner part, the exterior film includes a bend part that is bent to face the corner part, and a recess groove part that is spaced from the corner part is formed on the bend part at a position that faces the corner part along the corner part.

Abstract: What is provided is a solid state battery which can be manufactured with a high yield, has little variation in initial performance, and has a long lifespan and a method of manufacturing the same. A solid state battery includes a flat laminated structure which is obtained by winding an electrode laminated sheet extending from a first end to a second end.

Abstract: To reduce influence of external force on a current collection tab lead and a current collection tab in a laminated cell type battery. A single film of an exterior body contacts and covers a top surface, a bottom surface, and two side surfaces of a battery perpendicular to an end surface of the battery from which a current collection tab and a current collection tab lead are provided to extend, covers the end surface of the battery from which the current collection tab and the current collection tab lead protrude, and is folded in from both short sides of the end surface such that triangular pyramid-shaped spaces are formed on both sides. A reinforcement member is arranged in and joined to each triangular pyramid-shaped space.

Abstract: There is provided an electrode including: a current collector; an electrode material mixture; a plate-shaped metal body having a through-hole formed therethrough; a resin provided inside the through-hole; and an electrode tab, the current collector being a porous metal body, the current collector having pores filled with the electrode material mixture, the electrode tab being an extending portion extending from the plate-shaped metal body, wherein the current collector has an inner region in which the through-hole of the metal plate-shaped body is located in top view. There is also provided an electricity storage device including the electrode.

Abstract: Provided is an electrode for lithium ion secondary batteries in which an electrode material mixture is packed in porous metal, which electrode has excellent penetration of electrolyte solution and improved ion diffusivity. The electrode for lithium ion secondary batteries includes a current collector made of porous metal; and an electrode layer including an electrode material mixture including at least an electrode active material, in which the current collector is filled with the electrode material mixture, the current collector has an intermediate region and two surface regions in its thickness direction and m the electrode layer, the intermediate region has a porosity lower than that of the two surface region, and the intermediate region is filled with a first electrode active material, and the two surface regions are filled with a second electrode active material having a particle size larger than that of the first electrode active material.

Abstract: A battery includes one or more stacks, an outer packaging body, a lead terminal, and a plurality of overcurrent breaking portions. The one or more stacks each include a positive electrode including a positive electrode current collector, an electrolyte, and a negative electrode including a negative electrode current collector arranged in a repeating pattern. At least the positive electrode current collector or the negative electrode current collector includes a current collector tab that extends from an end face thereof. The tab constitutes a plurality of current collector tab groups. The lead terminal at least partially extends from the outer packaging body to an outside. The plurality of overcurrent breaking portions are disposed inside the outer packaging body and electrically connected to the lead terminal. The plurality of current collector tab groups are respectively electrically connected to the plurality of overcurrent breaking portions.

Abstract: To prevent the breakage of a bonding portion when current collector tabs are converged and bonded, and thereby maintain a current path. A plurality of electrode current collectors each including a metal porous body, a plurality of tabs each extending from an end of the metal porous body of each of the electrode current collectors, and a connecting tab lead that electrically connects the tabs, are included. The connecting tab lead is cross-bonded with each of the tabs to form a first compression bonding portion, and is further folded from a first of the tabs to a second of the tabs, for example, the connecting tab lead is arranged in a bellows shape. At a tab convergence location where the first compression bonding portions are stacked, the tabs are converged by forming a second compression bonding portion by ultrasonic waves or other means.

Abstract: To provide a current collecting structure capable of reliably collecting current while maintaining a pressurized and constrained state of a coin-type all-solid-state battery. A coin-type all-solid-state battery includes a solid electrolyte layer; a pair of first electrode current collectors each including a metal porous body, the first electrode current collectors being respectively disposed on both sides of the solid electrolyte layer; a pair of second electrode current collectors each including a metal porous body, the second electrode current collectors being respectively disposed on outer sides of the first electrode current collectors; and a pair of lid members being respectively disposed on outer sides of the pair of second electrode current collectors.