Abstract: In an embodiment, a battery includes a container, a lid member, an electrode group, an electrode terminal and an electrode group retainer. The lid member is attached to a peripheral wall of the container with an opening of an inner cavity being closed. The electrode terminal is electrically connected to the current collecting tab. The electrode group retainer is arranged between the electrode group and the lid member. A proximity plate portion of the electrode group retainer is close to the electrode group from a side where the lid member is located and forms a space between the lid member and thereof. A facing surface of the proximity plate portion is formed to have a shape that is along an outer surface of an end portion of the electrode group on a side where the lid member is located.

Abstract: In an embodiment, a battery includes a container, a lid member, an electrode group, a current collecting tab, an electrode terminal, a lead and a spacer. The lid member is attached to a peripheral wall of the container with an opening of an inner cavity being closed. The current collecting tab protrudes in the electrode group toward a side where the lid member is located, and the lead electrically connects the current collecting tab and the electrode terminal. The spacer is integrally formed of an electrically insulating material. The spacer includes a top plate portion sandwiched between the lead and the lid member, and a peripheral plate portion extending from the top plate portion toward a side where the electrode group is located and covering the lead and the current collecting tab in the inner cavity from an outer peripheral side.

Abstract: In one embodiment, a connecting lead connecting between a current collecting tab of an electrode group and an electrode terminal in a battery is provided. The connecting lead includes a top plate portion and a leg portion, a leg portion is bent relative to the top plate portion to one side in a thickness direction of the top plate portion, and a bend line at a bend position to the top plate portion is along a width direction of the top plate portion. The leg portion includes an extension portion located apart from the bend position to the top plate portion. The extension portion includes, on an outer surface, a side face relaying between a pair of main faces and facing one side in the width direction of the top plate portion. The side face is joined to the current collecting tab.

Abstract: A battery module including a plurality of battery cells, a first chassis, and a connection member. The battery cells are aligned in a first direction. The first chassis includes a plurality of first compartments in which the battery cells are housed one by one, and at least one second compartment that is partitioned in the first direction. The connection member includes a body that is housed in the second compartment, a pair of connection terminals that is mounted on a first face of the body and is electrically connectable to the electrodes of the battery cells via a conductive member. The first face faces in a second direction intersecting with the first direction, and a conductor that extends across the pair of connection terminals.

Abstract: A square secondary battery of an embodiment includes an outer can formed in a shape of a bottomed cylinder having a cross-sectional shape of a substantially quadrangular shape, the outer can having an opening, a power generation element contained in the outer can, and a lid having a positive electrode terminal and a negative electrode terminal, the lid covering the opening of the outer can. Two or more convex portions exist on each of one or more surfaces of a side surface of an outer surface of the outer can, a bottom surface of the outer surface of the outer can, and a surface having the positive electrode terminal and the negative electrode terminal of an outer surface of the lid.

Abstract: According to one embodiment, an electrode is provided. The electrode includes a current collector and an active material-containing layer formed on the current collector. The active material-containing layer contains a lithium nickel cobalt manganese composite oxide and a lithium cobalt composite oxide. Pore size distribution obtained by mercury intrusion porosimetry for the active material-containing layer has a first peak top indicating a highest intensity I1 within a pore size range of from 0.1 ?m to 1 ?m and a second peak top indicating an intensity I2 which is a second highest intensity after the highest intensity I1 within the pore size range of from 0.1 ?m to 1 ?m. A pore size at the first peak top is smaller than a pore size at the second peak top.

Abstract: According to one embodiment, a lid assembly includes a plate-shaped lid, a pair of leads, an insulating member, and a valve. The insulating member is provided between the lid and base portions of the pair of leads. The insulating member includes opposing faces facing an electrode group, a pair of support face groups protruding with respect to the opposing faces, and an intermediate region provided between the pair of support face groups and having an opening facing the lid. The valve is adjacent to the opening of the intermediate region, and is configured to open when a pressure on a side where the leads and the insulating member are disposed reaching a predetermined pressure. A maximum possible opening area with which the valve is configured to open is equal to or smaller than an area of the opposing faces.

Abstract: A battery includes a casing, a terminal, an electrode assembly, a collector, and a joint. The terminal is supported by the casing. The electrode assembly is housed in the casing and includes an electrode pair of a sheet form having different polarities from each other and a separator located between the electrode pair, the electrode pair and the separator laminated and wound around an axis. The collector is located at an axial end of the electrode assembly, electrically connected to the terminal, and includes a plurality of collector tabs. The collector tabs are part of one of the electrodes and laminated on each other with no other electrode and the separator placed in-between. The joint joins fringes of the laminated collector tabs.

Abstract: A battery includes a casing, a terminal, an electrode assembly, a collector, and a joint. The joint joins laminated fringes of the electrode assembly. The collector includes a cut part including the fringes. The cut part includes the joint. The electrode assembly includes a turnback pair formed by folding back the electrodes from one of an extension pair to the other. The collector includes a connection electrically connected to the terminal, including part of the extension pair, and not including at least one of the turnback pair.

Abstract: A square secondary battery of an embodiment includes an outer can formed in a shape of a bottomed cylinder having a cross-sectional shape of a substantially quadrangular shape, the outer can having an opening, a power generation element contained in the outer can, and a lid having a positive electrode terminal and a negative electrode terminal, the lid covering the opening of the outer can. Two or more convex portions exist on each of one or more surfaces of a side surface of an outer surface of the outer can, a bottom surface of the outer surface of the outer can, and a surface having the positive electrode terminal and the negative electrode terminal of an outer surface of the lid.

Abstract: According to one embodiment, a battery is provided. The battery includes an electrode body, a lead, a container member, and a terminal. The container member includes a main part and a terminal-connecting part adjacent to the main part. The electrode body is housed in the main part of the container member. The lead is electrically connected to the electrode body. The lead is housed in the terminal-connecting part of the container member. The terminal is electrically connected to the lead. The terminal is provided on the terminal-connecting part. A thickness of the main part of the container member is larger than a thickness of the terminal-connecting part of the container member.

Abstract: According to one embodiment, a battery is provided. The battery includes an electrode body, a lead, a container member, and a terminal. The container member includes a main part and a terminal-connecting part adjacent to the main part. The electrode body is housed in the main part of the container member. The lead is electrically connected to the electrode body. The lead is housed in the terminal-connecting part of the container member. The terminal is electrically connected to the lead. The terminal is provided on the terminal-connecting part. A thickness of the main part of the container member is larger than a thickness of the terminal-connecting part of the container member.

Abstract: According to an embodiment, an electrode is provided. The electrode group includes a stack. The stack includes a positive electrode, a negative electrode or negative electrodes, and separator. Each negative electrode includes a negative electrode current collector and a negative electrode layer provided on the negative electrode current collector. The electrode group satisfies following relational formulae (I) to (III): 10?a1/b1?16 (I); 0.7?D1/E1?1.4 (II); E1?85 (III). Here, the a1 [mm] is a thickness of the stack. The b1 [mm] is a thickness of the negative electrode current collector, or is a total thickness of the negative electrode current collectors. The D1 [?m] is a thickness of the positive electrode. The E1 [?m] is a thickness of the negative electrode.

Abstract: The nonaqueous electrolyte battery according to an embodiment includes a positive electrode, a negative electrode, and a nonaqueous electrolyte. The positive electrode contains a lithium cobalt composite oxide. The negative electrode contains a lithium titanium composite oxide. The positive electrode and the negative electrode satisfy a formula (1): 1.25?p/n?1.6. Here, p is a capacity of the positive electrode, and n is a capacity of the negative electrode. The nonaqueous electrolyte contains propionate ester. The nonaqueous electrolyte battery satisfies a formula (2): 13<w/(p/n)?40. w is the content of propionate ester in the nonaqueous electrolyte. Here, 20% by weight?w<64% by weight, with respect to the weight of the nonaqueous electrolyte.

Abstract: According to one embodiment, there is provided a nonaqueous electrolyte battery including a positive electrode, a negative electrode and a nonaqueous electrolyte. The positive electrode includes a positive electrode active material layer including a lithium nickel cobalt manganese composite oxide. The negative electrode includes a negative electrode active material layer including a spinel type lithium titanate. The nonaqueous electrolyte has an ion conductivity of not less than 7 mS/cm and not more than 10 mS/cm at 25° C. A capacity ratio p/n is within a range of not less than 1.4 and not more than 1.8. A thickness ratio Tp/Tn is within a range of not less than 1.05 and less than 1.3. A ratio Pp/Pn is within a range of not less than 0.55 and less than 0.8.

Abstract: According to one embodiment, a battery includes a flat-shaped electrode group, a package member and a terminal section. The package member includes a stainless steel-made first package having a flange at an opening and a stainless steel-made second package. The electrode group is stored in a space formed by welding the flange of the first package to the second package. The terminal section includes a through-hole that is open to the first package, a ring-shaped rising portion that extends from a periphery of the through-hole toward an inside of the package member, a ring-shaped member that is arranged on an outer surface of the rising portion, an insulation gasket, and an external terminal. The external terminal is fixed to the first package by caulking.

Abstract: A secondary battery according to one embodiment includes, an electrode group which is a cathode and an anode wound with a separator being interposed therebetween, a first lead having a first welding surface, a second lead having a second welding surface which is bent with respect to a winding axial direction of the electrode group, a first current collecting tab which is extended from one end of the electrode group on the winding axial direction, and welded onto the first welding surface of the first lead, a second current collecting tab which is extended from the other end of the electrode group on the winding axial direction, and welded onto the second welding surface of the second lead, a first terminal connected to the first lead, and a second terminal connected to the second lead.

Abstract: According to an embodiment, a battery module includes, for example, a plurality of battery cells, a first chassis, and a connection member. The battery cells are aligned in a first direction. The first chassis includes a plurality of first compartments in which the battery cells are housed one by one, and at least one second compartment that is partitioned in the first direction. The connection member includes a body that is housed in the second compartment; a pair of connection terminals that is mounted on a first face of the body and is electrically connectable to the electrodes of the battery cells via a conductive member, the first face facing in a second direction intersecting with the first direction; and a conductor that extends across the pair of connection terminals.

Abstract: A battery disclosed herein includes a container member housing an electrode body and a lead, a gasket, an external terminal, and a restraining member. The container member includes a terminal-connecting part having a thickness of 0.3 mm or less. The terminal-connecting part includes a through hole including a rising part. The gasket includes a hollow shaft inserted into the rising part. The external terminal includes a terminal shaft. The terminal shaft includes a diameter-reduction part. The restraining member restrains at least a part of the diameter-reduction part of the terminal shaft via the diameter-reduction part of the rising part and the shaft of the gasket. The inclination angle of the rising part is larger than the inclination angle of the terminal shaft.

Abstract: According to one embodiment, a battery includes a flat-shaped electrode group, a package member and a terminal section. The package member includes a stainless steel-made first package having a flange at an opening and a stainless steel-made second package. The electrode group is stored in a space formed by welding the flange of the first package to the second package. The terminal section includes a through-hole that is open to the first package, a ring-shaped rising portion that extends from a periphery of the through-hole toward an inside of the package member, a ring-shaped member that is arranged on an outer surface of the rising portion, an insulation gasket, and an external terminal. The external terminal is fixed to the first package by caulking.