Abstract: A service system includes a reservation section by which a reservation for a commodity or a service in a commercial facility can be made and specific information for an electric vehicle that visits the commercial facility can be set, a connection confirmation section that detects that an electric vehicle corresponding to the specific information set by the reservation section has been connected to a charge and discharge device of the commercial facility, and a notification section that notifies the commercial facility that connection of the electric vehicle corresponding to the specific information to the charge and discharge device has been detected by the connection confirmation section.

Abstract: The method for producing an electrode disclosed here is a method for producing an electrode having an electrode current collector and an electrode active substance layer, and includes the following steps: a step for preparing a powdery electrode material containing at least an electrode active substance and a binder; a step for passing the electrode material between a pair of opposing rollers so as to form the electrode active substance layer comprising the electrode material; a step for pressing the electrode active substance layer, wherein the pressing comprises pressing at a linear pressure of 1 ton/cm or more; a step for coating an adhesive liquid containing at least an adhesive resin on the electrode current collector; and a step for supplying the electrode active substance layer to the current collector on which the adhesive liquid has been coated so as to construct an electrode.

Abstract: Disclosed here is a battery including: an exterior body having a bottom wall; and a winding electrode body in which positive electrode, negative electrode and separator are wound about a winding axis. The winding electrode body has a flat shape having a pair of curvature parts having a curved outside surface and a flat part that connects the pair of curvature parts to each other and has a flat outside surface. When a line perpendicular to the winding axis of the winding electrode body and perpendicular to the bottom wall of the exterior body is assumed as L1, a portion positioned at an outermost periphery of the negative electrode in at least one of the pair of the curvature parts faces a portion positioned on a winding inner peripheral side of the negative electrode via the separator and not via the positive electrode on the line L1.

Abstract: Provided is a nonaqueous electrolyte secondary battery having excellent initial resistance characteristics and storage characteristics despite small pores of a positive electrode active material layer. The nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a nonaqueous electrolyte. The positive electrode includes a positive electrode current collector, and a positive electrode active material layer supported on the positive electrode current collector. The positive electrode active material layer includes a positive electrode active material and a conductive material. The positive electrode active material layer has a peak pore diameter of 0.50 ?m to 0.70 ?m. A content of the conductive material in the positive electrode active material layer is 0.2% by mass to 1.0% by mass. 80% by mass or more of the conductive material is carbon nanotubes. The nonaqueous electrolyte includes a nonaqueous solvent, an electrolyte salt, and a positive electrode film forming agent.

Abstract: The present disclosure relates to a reproduction method for obtaining a negative electrode active material with improved rapid charge-discharge property, from a used lithium ion secondary battery. A technology disclosed herein is directed to a reproduction method for a negative electrode active material from a used lithium ion secondary battery, including: a preparation step of preparing the used lithium ion secondary battery including a positive electrode, a negative electrode including a negative electrode active material containing a carbon material, and an electrolyte; a charging step of charging the lithium ion secondary battery; a discharging step of discharging the lithium ion secondary battery obtained after the charging step, at a discharge rate higher than a charge rate of the charging step; and a recovery step of recovering the negative electrode active material containing the carbon material from the negative electrode in the lithium ion secondary battery obtained after the discharging step.

Abstract: Provided is a high-performance, high-quality battery module including plurality of electrode bodies connected in series. The battery module disclosed herein has a plurality of electrode bodies that include positive electrodes and negative electrodes, connecting terminals that connect the plurality of electrode bodies in series, and a film exterior body that covers the plurality of electrode bodies and the connecting terminals. The electrode bodies each includes a pair of flat surfaces and are made into a module by being superimposed on each other, such that the flat surfaces face each other. The connecting terminal is made up of a cladding material resulting from joining of a first metal, which is a metal of identical type to that of the positive electrode, and a second metal, which is a metal of identical type to that of the negative electrode.

Abstract: A battery includes: a conductive member provided with a through hole; and a terminal member inserted in the through hole and having a tip portion exposed on the conductive member. A joined portion of the tip portion of the terminal member to the conductive member is formed. The joined portion includes a thick portion at which a thickness of the terminal member is relatively thick, and a thin portion at which the thickness of the terminal member is relatively thin.

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 battery pack includes: a stack including a plurality of battery cells arranged side by side in a first direction; a case that has a side wall facing the stack in the first direction and that accommodates the stack; and a bus bar module disposed on the stack, the bus bar module including a bus bar that electrically connects the plurality of battery cells and a plate member that accommodates the bus bar, wherein the plate member has a first positioning mechanism that positions the bus bar module in the first direction by biasing the side wall of the case.

Abstract: A terminal includes a first conductive member and a second conductive member. The first conductive member includes a first recessed portion. The second conductive member includes a flange portion and a shaft portion. At least a portion of the flange portion is arranged in the first recessed portion. The first conductive member includes a metal joining portion metallically joined to the flange portion. The flange portion includes a large diameter portion and a small diameter portion. An outer diameter of the small diameter portion is equal to or less than 9/10 of an outer diameter of the large diameter portion. An outer peripheral side surface of the small diameter portion includes a fastening portion mechanically fastened to an inner surface of the first recessed portion.

Abstract: At least one of a first bus bar module and a second bus bar module has a protrusion that protrudes toward the other of the first bus bar module and the second bus bar module, the protrusion hindering incorrect assembling of the first bus bar module or the second bus bar module by interference, the protrusion causing no interference when the first bus bar module and the second bus bar module are correctly assembled.

Abstract: A terminal includes a first conductive member formed of a first metal and a second conductive member formed of a second metal that is different from the first metal. The second conductive member includes a flange portion and a shaft portion provided on one surface of the flange portion. The second conductive member includes a first metal joining portion metallically joined to the first conductive member on an upper surface of the flange portion. The second conductive member includes a protrusion at a side closer to an outer periphery than the first metal joining portion. The first conductive member includes a first recessed portion that is fitted to the protrusion. The second conductive member includes a second metal joining portion where the first conductive member and the second conductive member are metallically joined to each other at the first recessed portion and the protrusion.

Abstract: At least one of a first bus bar module and a second bus bar module has a positioning mechanism that is inserted between a first stack and a second stack and that positions the first bus bar module or the second bus bar module in a direction (second direction) orthogonal to a stacking direction (first direction) of battery cells.

Abstract: A method for producing a power storage device includes: compressively deforming in which case long-side walls of the power storage device after initial charging and aging but before permanent sealing are pressed toward an electrode body to compress the electrode body and further plastically deform at least one of the case long-side walls so that the case long-side walls continue to press the electrode body even after the pressing is released; after this compressively deforming, hermetically permanently sealing the case of the power storage device in which the inside of the case is in communication with the outside; and releasing the pressing applied in the compressively deforming.

Abstract: The present disclosure relates to a reproduction method for obtaining a negative electrode active material with improved cycle characteristics from a secondary battery. The technology disclosed herein is a reproduction method for a negative electrode active material, including: a preparation step of preparing a secondary battery including a positive electrode, a negative electrode, an electrolyte, and a phosphorus-containing compound; a charging step of charging the secondary battery in a temperature environment that is at or above a decomposition temperature of the phosphorus-containing compound; and a recovery step of recovering a negative electrode active material from the negative electrode in the secondary battery obtained after the charging step.

Abstract: An electricity storage device includes an electrode assembly, a case main body, a lid, a terminal, a current collector, an insulating member, and an insulating film. The electrode assembly includes a tab. The insulating film is disposed inside the case main body so as to cover the electrode assembly. The insulating film is made of a resin film that electrically insulates the case main body and the electrode assembly from each other. The insulating film is joined to at least one of the lid, the insulating member attached to the lid, and the current collector.

Abstract: A power supply system includes a solar light power generation device; a power storage apparatus; a charge/discharge device connected with the solar light power generation device and the power storage apparatus and connectable with power loads, the charge/discharge device storing power generated by the solar light power generation device on the power storage apparatus and discharging the power stored on the power storage apparatus to the power loads; a first setter setting a standard power storage amount as an amount of power to be stored on the power storage apparatus, the standard power storage amount being smaller than a power storage amount thereof in a fully charged state; and a first charge/discharge controller controlling the charge/discharge device to store the power generated by the solar light power generation device on the power storage apparatus at a level of the standard power storage amount or smaller.

Abstract: A power storage device includes: a power storage module in which a plurality of power storage cells are stacked along a stacking direction; and a case that accommodates the power storage module, wherein each of the power storage cells in the power storage module has a main surface extending in a direction substantially orthogonal to the stacking direction, and the case includes a supporting portion that supports, along the stacking direction, the power storage module accommodated in the case, and the case is provided with a recess that is provided at a position different from the supporting portion and that opens toward the main surface.

Abstract: An electricity storage device disclosed herein includes: an exterior body having an opening; a closing plate closing the opening; an electrode terminal having one end electrically connected to an electrode body inside the exterior body and the other end exposed outside the closing plate; and an insulating member made of resin and insulating the electrode terminal from an outer surface of the closing plate. The closing plate, the electrode terminal, and the insulating member are insert-molded, the closing plate has a groove at a boundary portion with the insulating member on the outer surface side, and the groove is provided over an entire periphery of the electrode terminal.

Abstract: A method of manufacturing a secondary battery includes: inserting an electrode assembly into a case main body from the second end portion side of the electrode assembly through a first opening after electrically connecting a first electrode terminal and a first electrode tab to each other; electrically connecting a second electrode terminal and a second electrode tab to each other after inserting the electrode assembly into the case main body, a second electrode terminal being provided on a second sealing plate; sealing the first opening with a first sealing plate after inserting the electrode assembly into the case main body; and sealing a second opening with the second sealing plate after electrically connecting the second electrode terminal and the second electrode tab to each other.