Abstract: A first electrode foil having a pinhole, a second electrode foil, a method of manufacturing a current collector foil to obtain a current collecting foil for a liquid-based battery by laminating, the first electrode foil and the second electrode foil, one is a positive electrode foil, the other is a negative electrode foil, the application step of applying an adhesive to the first electrode foil, suction from the surface side opposite to the surface to which the adhesive is applied in the first electrode foil, a suctioning step of impregnating the adhesive into the pinhole, a drying step of drying the adhesive, and a heat welding step of thermal welding by bonding the second electrode foil to the surface to which the adhesive is applied in the first electrode foil, the method of manufacturing a current collector foil.

Abstract: A current collector foil for a liquid cell includes: one first electrode foil having a pinhole; a first intervening layer; another first electrode foil having a pinhole; a second intervening layer; and a second electrode foil, the one first electrode foil, the first intervening layer, the other first electrode foil, the second intervening layer, and the second electrode foil being stacked in this order. Either the one first electrode foil and the other first electrode foil or the second electrode foil is a positive electrode foil, and either the one first electrode foil and the other first electrode foil or the second electrode foil, whichever is not the positive electrode foil, is a negative electrode foil.

Abstract: A battery module includes: a plurality of battery cells each including a metal layer and a heat seal layer, the plurality of battery cells having a laminate film in which an electrode body is accommodated and a heat seal layer in a peripheral edge portion is joined; a case in which the battery cells are accommodated in a state of being laminated in a thickness direction; and a heat conductive member provided on an inner wall of the case so as to be in contact with the metal layer exposed from the peripheral edge portion and configured to dissipate heat from the battery cells.

Abstract: A battery module comprising: a plurality of battery cells; and a container containing the battery cells, wherein the container includes a housing containing the battery cells; and a plate-shaped member thermally connected to the housing and partitioning a space in which the battery cells of the housing are accommodated into a plurality of spaces, wherein the plate-shaped member includes a thermally conductive elastic body and a thermally conductive plate disposed on one or both sides of the thermally conductive elastic body.

Abstract: A case constituting an outer shape of a second cooler disposed between the battery cells and containing a second fluid having a lower thermal conductivity than the first fluid therein is constituted by a buffer member capable of expanding and contracting in accordance with a flow rate of the second fluid in the case, and the control unit increases a flow rate of the second fluid to be supplied to the second cooler when the temperature of the battery cell is equal to or higher than a predetermined threshold value than when the temperature of the battery cell is lower than the threshold value.

Abstract: A battery module includes a battery cell and a heat dissipation member that is in contact with a battery cell case. The battery cell includes an electrode body including plural layered structures layered one on another, each including a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode, and the battery cell case that hermetically encloses the electrode body inside the battery cell case. The battery cell case includes at least a metal layer and a fusion resin layer disposed at the inner face side of the metal layer and has an exposed portion, at which the metal layer is exposed, at at least part of the outer face of the battery cell case. The heat dissipation member is in contact with the exposed portion.

Abstract: A battery cell includes: an electrode body including plural layered structures, each including a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode; and a battery cell case that hermetically encloses the electrode body inside the battery cell case. At least one of the current collector in the positive electrode or the current collector in the negative electrode has, on a peripheral portion of a surface thereof, an uncoated portion at which the mix is not coated. A current collector of which the distance from the surface of the battery cell case is the greatest among current collectors each having an uncoated portion has a first uncoated portion, and the first uncoated portion extends to the outside of the battery cell case, thereby forming a first exposed portion.

Abstract: The present disclosure provides a method for manufacturing a bipolar electrode laminate in which a positive electrode active material layer and a negative electrode active material layer can each have a desired density and a small manufacturing process. The method of the present disclosure for manufacturing a bipolar electrode laminate comprising, providing a first electrode mixture, and the second electrode mixture comprising an electrolyte component, forming the first electrode mixture on a first surface of a current collector layer to form a first electrode active material layer precursor, and forming the second electrode mixture on a second surface of the current collector layer to form a second electrode active material layer precursor, pressing a laminate comprising the first electrode active material layer precursor, the current collector layer, and the second electrode active material layer precursor, and dissolving the electrolyte component with a solvent to produce an electrolytic solution.

Abstract: A battery component comprises: a first component; an adhesive layer; and a second component, in this order, wherein the adhesive layer includes an adhesive agent, a conductive aid, and porous particles, and the adhesive agent includes a main agent and a curing agent.

Abstract: An electrode includes an active material layer. The active material layer is provided with a first groove portion and a second groove portion on a surface. The first groove portion has a first depth. The second groove portion has a second depth. The second depth is shallower than the first depth. Each of the first groove portion and the second groove portion extends linearly along the surface of the active material layer. The second groove portion is adjacent to the first groove portion.

Abstract: An electrode is manufactured by forming an active material layer on a surface of an electrode current collector, forming a groove portion on a surface of the active material layer, and peeling off a part of the active material layer. An electrode current collector includes a metal foil and an adhesive layer. The metal foil includes a first region and a second region. The adhesive layer covers the first region. In the second region, the metal foil is exposed. The active material layer includes a first portion that covers the adhesive layer and a second portion that covers the second region. The groove portion is formed in each of the first portion and the second portion. The second portion is peeled off.

Abstract: An electrode includes a base material and an active material layer. The active material layer is disposed on a base material surface. One or more grooves are formed on an active material layer surface. The one or more grooves linearly extend along the surface of the active material layer. In a plan view, each of the one or more grooves includes an inlet region, an intermediate region, and an outlet region. Each of the inlet region and the outlet regions is configured such that a first pressure loss occurring when a fluid flows in a forward direction is smaller than a second pressure loss occurring when the fluid flows in a backward direction.

Abstract: An electrode manufacturing apparatus includes a film forming device that forms an electrode layer on a surface of a substrate. The film forming device includes a first roll that rotates, a second roll that is spaced apart from and opposed to the first roll and rotates in an opposite direction of the first roll, a third roll that is spaced apart from and opposed to the second roll and rotates in the opposite direction of the second roll, and a temperature adjusting unit that reduces a temperature difference between a central portion and an end portion in an axial direction of at least one roll of the first roll, the second roll, and the third roll.

Abstract: An electrode manufacturing apparatus includes a shaping roll and an opposed roll that sandwich an electrode therebetween and rotate in opposite directions, and a temperature adjusting unit. The temperature adjusting unit reduces a temperature difference between a central portion and an end portion in an axial direction, of at least one roll of the shaping roll and the opposed roll.

Abstract: A slurry is prepared by mixing an active material particle, a binder, and a dispersion medium. The slurry is applied to a surface of a substrate to form a first film. The first film is dried to form a second film. A convex die is pressed against a surface of the second film to form a depressed portion in the surface. After the depressed portion is formed, the second film is dried to form an active material layer. In the second film, a solid phase, a liquid phase, and a gas phase form a pendular state or a funicular state.

Abstract: Disclosed is an all-solid-state lithium ion secondary battery being excellent in cycle characteristics. The all-solid-state lithium ion secondary battery may be an all-solid-state lithium ion secondary battery, wherein an anode comprises an anode active material, an electroconductive material and a solid electrolyte; wherein the anode active material comprises at least one active material selected from the group consisting of a metal that is able to form an alloy with Li, an oxide of the metal, and an alloy of the metal and Li; and wherein a bulk density of the solid electrolyte is 0.3 g/cm3 or more and 0.6 g/cm3 or less.

Abstract: Disclosed is an all-solid-state lithium ion secondary battery including an anode that contains, as an anode active material, at least one selected from the group consisting of a metal that is able to form an alloy with Li, an oxide of the metal, and an alloy of the metal and Li, and being excellent in cycle characteristics. The all-solid-state lithium ion secondary battery may be an all-solid-state lithium ion secondary battery, wherein an anode comprises an anode active material, an electroconductive material and a solid electrolyte; wherein the anode active material comprises at least one active material selected from the group consisting of a metal that is able to form an alloy with Li, an oxide of the metal, and an alloy of the metal and Li; and wherein the solid electrolyte is particles with a BET specific surface area of from 1.8 m2/g to 19.7 m2/g.

Abstract: Provided are an anode mixture configured to provide excellent cycle characteristics when used in an all-solid-state lithium ion secondary battery, an anode containing the anode mixture, and an all-solid-state lithium ion secondary battery containing the anode. Disclosed is an anode mixture for an all-solid-state lithium ion secondary battery, wherein the anode mixture contains an anode active material, a solid electrolyte and an electroconductive material; wherein the anode active material contains at least one active material selected from the group consisting of a metal that is able to form an alloy with Li and an oxide of the metal; and wherein a value obtained by dividing, by a BET specific surface area (m2/g) of the solid electrolyte, a volume percentage (%) of the electroconductive material when a volume of the anode mixture is determined as 100 volume %, is 0.09 or more and 1.61 or less.

Abstract: A method for efficiently producing sulfide solid electrolyte particles which are particles in spherical form and which have a small particle diameter. The method comprises: preparing a sulfide solid electrolyte material, grinding the sulfide solid electrolyte material by mechanical milling to obtain particles in flattened form (a first grinding step), and grinding the particles in flattened form by mechanical milling to obtain sulfide solid electrolyte particles in spherical form (a second grinding step), wherein a relationship A (J)>B (J) is satisfied, where A (J) is a kinetic energy (½(mv2)) per grinding medium used in the first grinding step, and B (J) is a kinetic energy (½(mv2)) per grinding medium used in the second grinding step.

Abstract: Disclosed is an all-solid-state lithium ion secondary battery being excellent in cycle characteristics. The all-solid-state lithium ion secondary battery may be an all-solid-state lithium ion secondary battery, wherein an anode comprises an anode active material, an electroconductive material and a solid electrolyte; wherein the anode active material comprises at least one active material selected from the group consisting of a metal that is able to form an alloy with Li, an oxide of the metal, and an alloy of the metal and Li; and wherein a bulk density of the solid electrolyte is 0.3 g/cm3 or more and 0.6 g/cm3 or less.