Abstract: A method for manufacturing a battery, the method including: a first step of preparing an electrode body including a substance that is capable of retaining an electrolytic solution and an electrolytic solution that is retained at the substance; a second step of accommodating the electrode body in an exterior body; and a third step of supplying an electrolytic solution to an interior of the exterior body.

Abstract: A battery 10, including an electrode body 30 that includes an electrode and a separator, and an exterior body 20A, 20B that is disposed around the electrode body 30, the battery being restrained by a restraining member, the electrode body 30 having a bonded portion at which the electrode and the separator are bonded to each other, and a non-bonded portion at which the electrode and the separator are not bonded to each other, and at least a part of the non-bonded portion of the electrode body 30 matching a portion of the battery restrained by the restraining member 40.

Abstract: A method of manufacturing a battery that includes an electrode containing a current collector and an electrode layer arranged on the current collector, the method including: a first step of forming an electrode layer on a current collector; and a second step of forming a groove in a surface of the electrode layer, wherein the groove is formed by removing a part of the electrode layer by laser irradiation.

Abstract: A method for manufacturing a battery, the method including: a first step of preparing an electrode body that includes an electrode containing an electrode active material and a solute of an electrolytic solution; and a second step of causing a solvent of the electrolytic solution to penetrate into the electrode body.

Abstract: A method of manufacturing a separator that is disposed between a positive electrode and a negative electrode, the method including immersing a separator in a liquid that contains a surfactant; and drying the separator that has been removed from the liquid.

Abstract: An electrode body, including a first electrode layer, a second electrode layer, and a separator that is disposed between the first electrode layer and the second electrode layer, the first electrode layer having a projecting portion that projects toward a side of the separator, and the second electrode layer having a recessed portion at a position facing the projecting portion of the first electrode layer.

Abstract: A method of producing a battery, the method including: a first process of disposing an electrode body at an internal space of an exterior body; a second process of supplying an electrolytic solution to the internal space of the exterior body at which the electrode body has been disposed; and a third process of pressurizing the exterior body, to which the electrolytic solution has been supplied, at a portion corresponding to a periphery of the electrode body, the internal space of the exterior body being greater in volume than the electrode body.

Abstract: An electrode body including a current collector, a positive electrode layer, and a separator, in this order, the positive electrode layer comprising positive-electrode active material particles and graphite particles, wherein, when the positive electrode layer is divided into two regions in a thickness direction, a number per unit area of the graphite particles in a separator-side region is greater than a number per unit area of the graphite particles in a current collector-side region.

Abstract: A method of manufacturing a battery includes disposing, in an internal space of an exterior body 11, an electrode body 12 and a plate 13 that has a groove formed at a surface of the plate 13; and supplying an electrolytic solution 14 to the exterior body 11 so that at least a part of the electrode body and at least a part of the plate are immersed in the electrolytic solution 14.

Abstract: A method for manufacturing a battery includes: a first step of supplying an electrolytic solution to an internal space of an exterior body in which an electrode body is accommodated; and a second step of supplying the electrolytic solution that has been taken out from the internal space of the exterior body, to the internal space of the exterior body, wherein the second step includes removing bubbles contained in the electrolytic solution that has been taken out from the internal space of the exterior body.

Abstract: A method of manufacturing a battery, comprising, a joining step of joining together superposed peripheral edge portions of an exterior body that accommodates an electrode body at an interior thereof, and nipping and welding one end portion of a resin hollow member between the peripheral edge portions; and a supplying step of supplying an electrolytic solution into the interior of the exterior body from a supply path of the hollow member.

Abstract: A coating step of coating a slurry obtained by dispersing an electrode material on a current collector foil in a solvent to obtain a coating film, and a drying step of drying the coating film while transporting the current collector foil on which the coating film is formed in a drying furnace, the coating film, three regions divided along the transport direction, a central portion disposed in the center of the width direction, and an end portion disposed on both sides of the central portion, respectively, a drying step drying each end portion of the coating film by a heat source of low energy density, drying the central portion of the coating film by a high energy density heat source, an electrode manufacturing method.

Abstract: An electrode manufacturing method includes an application step of obtaining a coating film by coating a slurry obtained by dispersing an electrode material on a current collecting foil in a solvent to obtain a coating film, and a drying step of drying the coating film while transporting the current collecting foil from which the coating film is formed in the drying furnace interior, wherein the drying step irradiates at least one heat source to the coating film, the irradiation range of the heat source irradiated to the coating film has two regions divided by a straight line that divides the length in the transport direction of the irradiation range into two equal parts, and the ratio of the energy density of the heat source irradiated to the upstream region to the energy density of the heat source irradiated to the downstream region is 1.2 or more and 3.0 or less.

Abstract: In the cell case of the power storage cell according to the present disclosure, the cylindrical main body portion is formed by forming a film into a cylindrical shape, and the first opening portion and the second opening portion are formed at both ends thereof, respectively. The first sealing body closes the first opening portion. The second sealing body closes the second opening portion. The first sealing body includes an outer peripheral face that is in contact with an inner peripheral face of the cylindrical main body portion. The outer peripheral face includes a main body surface portion and a protruding portion. The main body surface portion extends in parallel to a first direction in which the first opening portion and the second opening portion are arrayed. The protruding portion protrudes from the main body surface portion toward the cylindrical main body portion.

Abstract: A power storage module has a case including a case body and at least one partition portion. The case body surrounds a plurality of electrode assemblies. The partition portion is located between the electrode assemblies adjacent to each other to partition an accommodation space of the case body. In the accommodation space of the case body, the partition portion forms a first compartment and a second compartment adjacent to the first compartment with the partition portion interposed between the first compartment and the second compartment. A first cooling path and a second cooling path are formed in the case, the first cooling path extends in a portion 10 of the case that faces the first compartment without the second compartment in between, and the second cooling path extends in a portion of the case that faces the second compartment without the first compartment in between.

Abstract: A power storage module includes a case that houses a plurality of electrode assemblies. The case includes a case body and at least one partition portion. The case body surrounds the plurality of electrode assemblies. The partition portion is located between the electrode assemblies adjacent to each other to partition an accommodation space of the case body. The partition portion includes a pair of resin layers and a metal layer. The pair of resin layers is formed integrally with the case body and the resin layers are arranged in a first direction. The metal layer is located between the resin layers and extends in a direction orthogonal to the first direction.

Abstract: The present disclosure provides a battery case that is formed by joining two battery case members to each other to improve the mechanical strength at a joined portion of the members. The battery case disclosed herein is a hexahedral box-shaped battery case including two rectangular wide faces, three rectangular side walls that are present between the two wide faces, and an opening part. The battery case is characterized in that the joined portion is included along the circumference (three sides) of the battery case.

Abstract: A method of manufacturing a battery case includes: preparing a tubular body having a first opening end and a second opening end that are respectively located at opposite sides in one direction; closing the first opening end with a first plate member; closing the second opening end with a second plate member; in a state where the first opening end is closed with the first plate member and the second opening end is closed with the second plate member, cutting the tubular body, the first plate member, and the second plate member along a plane parallel to the one direction, to obtain a case body having an opening formed by respective cut edges of the tubular body, the first plate member, and the second plate member; and closing the opening of the case body with the lid portion.

Abstract: A power storage module includes a plurality of power storage cells, a module case, and a connection member. The plurality of power storage cells each include an electrode assembly, a cell case, and an external terminal. The external terminal is electrically connected to the electrode assembly, located outside the cell case, and disposed at a side of the cell case in a second direction orthogonal to a first direction. The module case includes a bottom surface portion and a peripheral side surface portion. The connection member is in contact with the external terminal of each of power storage cells adjacent to each other, among the plurality of power storage cells. At least a part of the connection member is embedded in the peripheral side surface portion.

Abstract: In a secondary battery, a main body of a housing includes a bottom surface portion, a first side surface portion, a second side surface portion, a first top surface portion, a second top surface portion, and a weld. The first top surface portion extends toward the second side surface portion, from an end of the first side surface portion opposite to the bottom surface portion. The second top surface portion extends toward the first side surface portion, from an end of the second side surface portion opposite to the bottom surface portion. The weld connects respective leading ends of the first top surface portion and the second top surface portion to each other.