Abstract: A power storage device includes a case lid with a terminal inserting hole, a current collecting terminal having a hole insertion portion inserted in the terminal inserting hole in a case front-back direction and an external connection portion continuous with the hole insertion portion and placed in parallel to the case lid on the case front-surface side, and an insulating resin member integrally molded with the current collecting terminal and the case lid to connect the hole insertion portion and the external connection portion to a hole outer edge portion and a hole surrounding portion. The insulating resin member includes a back-surface side insulating resin portion connecting a back surface of the external connection portion and the hole insertion portion to the hole outer edge portion and the hole surrounding portion. The back-surface side insulating resin portion is formed with a recessed portion opening on a case back-surface side.

Abstract: A power storage device includes a case lid with a terminal inserting hole, a current collecting terminal having a hole insertion portion inserted in the terminal inserting hole and an external connection portion placed on a front surface side of the case lid, and an insulating resin member integrally molded with the current collecting terminal and the case lid. The insulating resin member includes an outer-periphery-side insulating resin portion and a back-surface side insulating resin portion connecting the current collecting terminal and the case lid. The back-surface side insulating resin portion is formed with a hollow portion penetrating through a back surface of the back-surface side insulating resin portion to a back surface of the outer connecting portion. The back surface of the outer connecting portion is formed with an annular band-shaped sealing portion along the outer edge portion of the hollow portion.

Abstract: A power storage device includes a case lid member, a terminal member, and a resin member. The resin member includes a resin outer portion, a resin inner portion, and a resin inside-hole portion. The case lid member and the resin member are configured that, when the power storage device is placed under a temperature environment of ?40° C., the resin member forms an outward convex warp in a lid thickness direction with respect to a lid longitudinal direction so that a pair of longitudinal joint faces of the resin inner portion press the terminal member in the lid longitudinal direction.

Abstract: Provided is a lid body including: a terminal member being mainly made up of a first metal; a sealing plate mainly made up of a second metal; and a sealing material. The sealing plate has a mounting hole for attaching the terminal member. The terminal member is inserted into the mounting hole and is attached to the sealing plate in a state where the sealing material is joined to a peripheral edge portion of the mounting hole. With as ?S a coefficient of linear expansion at 25° C. of the sealing material, ?1 as a coefficient of linear expansion at 25° C. of the first metal and ?2 as a coefficient of linear expansion at 25° C. of the second metal, ?L??S??H is satisfied, where ?H is the higher value and ?L is the lower value from among the ?1 and ?2.

Abstract: In a battery, a lid member of a battery case is provided with a terminal part and a resin member. The terminal part has a terminal plate-shaped portion located inside the battery case, which extends wider than a through hole along an inner surface of the lid member. The resin member has an inner resin plate-shaped portion located between the inner surface of the lid member and the terminal plate-shaped portion. The lid member, on the inner surface side around the through hole, includes a protruding portion defined by a protruding inner surface joined to the inner resin plate-shaped portion and protruding toward the inside of the battery case relative to a non-protruding inner surface farther from the through hole than the protruding inner surface. Side surfaces of the protruding portion and the terminal plate-shaped portion do not project outward beyond a side surface of the inner resin plate-shaped portion.

Abstract: A power storage device has a case member, a terminal member, and a resin member subjected to insert molding to fix the terminal member to the case member. The resin member is made of a resin material including a thermoplastic main resin having a first glass transition temperature equal to or higher than 70° C., a thermoplastic elastomer, and a filler. The elastomer has a second glass transition temperature that is equal to or higher than ?10° C. and equal to or lower than 20° C. and a third glass transition temperature equal to or lower than ?40° C.

Abstract: A power storage device includes a current collecting terminal, a case member having a terminal insertion hole, and an insulating resin member connecting the current collecting terminal with a hole periphery and a hole surrounding portion of the terminal insertion hole. The current collecting terminal and the case member have seal portions that ensure airtightness in a case, at connecting portions connecting with the insulating resin member, and each of the seal portions is a roughened surface. The insulating resin member has a thermoplastic resin material including high molecular weight particles with a molecular weight of 10,000 or more and low molecular weight particles with a molecular weight of 500 to 5,000, and the low molecular weight particles are included 5 to 15% by weight in the thermoplastic resin material and are unevenly distributed closer to the roughened surface.

Abstract: A power storage device has a case member, a first terminal member, a second terminal member, a first resin member hermetically joined to the case member and the first terminal member, and a second resin member hermetically joined to the case member and the second terminal member. The first resin member is made of a first resin material having a resin material linear expansion coefficient ? within the range of 1.6×10?5 to 2.7×10?5 (1/K), and the second resin member is made of a second resin material that is different from the first resin material and has a resin material flexural modulus E of 17 GPa or less.

Abstract: A method of manufacturing a power storage device includes a laser welding step in which a laser beam is irradiated to an opening portion of a case body and a peripheral portion of a case lid member of a lid assembly over the entire circumference to laser weld them while the opening portion of the case body is closed by the case lid member, a shielding step, prior to the laser welding step, in which a shield member is placed in position on the lid assembly to prevent scattered light of the laser beam from reaching a resin member, and a removing step, after the laser welding step, in which the shield member is removed.

Abstract: Provided is a technique of making it easier to separate a bus bar from an electrical energy storage device. An electrical energy storage module includes a plurality of electrical energy storage devices and a bus bar. The electrical energy storage devices are arranged in a first direction. The bus bar is provided to link two of the electrical energy storage devices that are adjacent to each other in the first direction. The bus bar includes a grip part. The grip part is a projection protruding from a surface of the bus bar or a penetration hole.

Abstract: A metal member (a lid member and a positive terminal member) has a surface with a joining region to be joined to a resin member (a positive-electrode resin member) to seal between the first space and the second space (outside and inside of a battery) in combination with the resin member. The joining region includes a roughened region formed on the surface and constituted of a base layer composed of accumulated debris particles, and a column group layer composed of nano columnar bodies standing densely in two dimensions, each being formed of the debris particles bonding to one another like strings of beads extending in the height direction from the base layer. The nano columnar bodies in the resin member have an average height of 84 nm or more.

Abstract: A herein disclosed electrode body is a wound body in which, via a first separator 30A and a second separator 30B, a positive electrode plate 10 and a negative electrode plate 20 are wound therein. The first separator 30A is adhered to the positive electrode plate 10, but not adhered to the negative electrode plate 20. On the other hand, the second separator 30B is adhered to the negative electrode plate 20, but not adhered to the positive electrode plate 10. Then, both of a second terminal end part 30Be of the second separator 30B and a first terminal end part 30Ae of the first separator 30A are exposed to an outer surface of the wound body. In addition, a separator wound part 40s in which the first separator 30A and the second separator 30B are wound therein includes a non-adhesion area 30X where the separators are not adhered to each other.

Abstract: A battery is a lithium-ion battery including a case, an electrode body and an electrolytic solution which are housed inside the case, and a resin member fixed to the case and having an inner exposed surface which is exposed inside the case. The electrolytic solution is a non-aqueous electrolytic solution containing fluorine. The resin member includes glass filler formed of glass which contains silicon oxide as a main body and added with group 2 elements. A number of atoms ratio of the group 2 elements to silicon in component elements of the glass filler is 0.12% or more and 65% or less.

Abstract: A method of recovering electrode materials includes: a preparing step of preparing an electrode assembly or an electrode sheet, the electrode assembly and the electrode sheet including a current collector and an electrode active material layer formed on the current collector and containing an electrode active material; a dissolving step of immersing the electrode assembly or the electrode sheet in an etchant solution that dissolves the current collector; and a separating step of separating a precipitate containing the electrode active material from the etchant solution in which the current collector is dissolved.

Abstract: In an aluminum member, a member body made of metal aluminum (a lid member and a positive terminal member) is formed, on its member surface, with protrusions (a lid upper-surface protrusion layer, a lid lower-surface protrusion layer, a terminal side-surface protrusion layer, a terminal lower-surface protrusion layer) having a nano-order diameter of less than 1 ?m and a nano-order height of less than 1 ?m, which are densely arranged. Proximal end portions of the protrusions, continuous to the member surface, contains amorphous alumina and ?-alumina.

Abstract: A battery module includes a plurality of batteries each including: an electrode body; a non-aqueous electrolyte; a battery case made of a liquid-junction preventing resin film including no metal foil and accommodating and hermetically sealing the electrode body and the electrolyte to block penetration of the electrolyte; and a plurality of electrode terminal plates which include at least one positive terminal plate and at least one negative terminal plate, each hermetically extending from inside to outside of the battery case through a peripheral portion of the battery case, the electrode terminal plate of one of the batteries that are adjacently located being electrically connected to the electrode terminal plate of the other battery; and a module container made of metal, housing and hermetically sealing the batteries.

Abstract: A power storage device includes a case having conductivity and an electrode body housed in the case. The electrode body includes a first current collecting portion and a second current collecting portion having a different polar from the first current collecting portion. The case and the first current collecting portion of the electrode body are conductively connected by a swaged joint portion where these are swaged and joined. The power storage device is provided with an electrode external terminal that is fixed to the case and insulated from the case. The electrode external terminal is connected to the second current collecting portion of the electrode body inside the case.

Abstract: A power storage module includes a power storage device pair having a first power storage device having a first case electrically connected to a negative current collector of an electrode body, and a positive external terminal connected to a positive current collector of the electrode body, and a second power storage device having a second case electrically connected to a positive current collector of an electrode body, and a negative external terminal connected to a negative current collector of the electrode body, and the first case and the second case are electrically connected to each other, while the first power storage device and the second power storage device are connected in series.

Abstract: A power storage device includes a rectangular box-shaped case and an electrode body housed therein. An opening peripheral portion of a case body of the case is bent to the inside of the opening. A lid peripheral portion of the lid member is bent on an inner surface side. The lid peripheral portion and the opening peripheral portion are hermetically jointed together while the lid peripheral portion stacked on the opening peripheral portion on the outside in its thickness direction over a ring-band shaped range. An electrode laminated portion of the electrode body is elastically compressed in an electrode-body thickness direction by a first main wall portion and a second main wall portion of the case having the elasticity.

Abstract: A power storage device is provided with a case and an electrode body housed in the case. The case includes a bottomed prismatic shaped case body with an opening, and a plate-shaped lid member closing the opening. The case body includes an opening peripheral portion that is bent to the inside of the opening over the entire circumference. The lid member includes a lid peripheral portion that is bent toward an inner surface over the entire circumference. While the lid peripheral portion is stacked, over a ring-band shaped range, on the opening peripheral portion on the outside in the thickness direction, the lid peripheral portion and the opening peripheral portion are hermetically joined to each other.