Abstract: A nonaqueous electrolyte secondary battery that is an aspect of the present disclosure comprises a positive electrode, a negative electrode, and a nonaqueous electrolyte solution. The negative electrode comprises a negative electrode current collector and a negative electrode active material layer disposed on the negative electrode current collector. The negative electrode active material layer contains graphite particles A and graphite particles B as negative electrode active materials. The graphite particles A have an internal void ratio of 5% or less. The graphite particles B have an internal void ratio of 8-20%. When the negative electrode active material layer is divided in half in the thickness direction, the region of the half to the side of the outer surface contains more graphite particles A than the region of the half to the side of the negative electrode current collector.

Abstract: A battery pack includes a battery assembly including battery cells parallel to one another and an outer case. Each battery cell includes a discharge valve provided on an end surface thereof, and an end-surface electrode provided at an end portion thereof. A welding surface of the lead plate is connected to the end-surface electrode arranged on the same plane. The battery pack includes a backflow-restricting layer disposed on a non-welding surface of the lead plate in the outer case. The lead plate has a gas permeation gap therein allowing a gas discharged from the discharge valve to pass in a discharge direction of the backflow-restricting layer. The backflow-restricting layer includes a resistance part configured to allow the gas passing through gas permeation gap to pass in the discharge direction, and to suppress or prevent the exhaust gas from passing in a direction opposite to the discharge direction.

Abstract: W1/T1 is equal to or greater than 5, assuming that the width of an electrode body in a direction perpendicular to a winding axis direction and a thickness direction of the electrode body is W1 (mm) and the thickness of the electrode body 3 is T1 (mm).

Abstract: The non-aqueous electrolyte secondary cell according to an embodiment of the present disclosure has a positive electrode, a negative electrode, and a non-aqueous electrolytic solution. The negative electrode has a negative electrode collector and a negative electrode active material layer provided on the negative electrode collector. The negative electrode active material layer contains graphite particles A and graphite particles B as negative electrode active materials. The graphite particles A have an internal void rate of 5% or below. The graphite particles B have an internal void rate of 8 to 20%. When the negative electrode active material layer is halved in the thickness direction, a region on the half closer to the outer surface contains more graphite particles A than a region on the half closer to the negative electrode collector.

Abstract: A non-aqueous electrolyte secondary battery according to an aspect of the present disclosure is provided with a negative electrode having: a negative electrode collector: a first negative electrode mixture layer provided on the surface of the negative electrode collector; and a second negative electrode mixture layer provided on the surface of the first negative electrode mixture layer. Each of the first negative electrode mixture layer and the second negative electrode mixture layer contains graphite particles. The ratio (S2/S1) of the inter-particle porosity (S2) of the graphite particles in the second negative electrode mixture layer to the inter-particle porosity (S1) of the graphite particles in the first negative electrode mixture layer is 1.1-2.0. The ratio (D2/D1) of the filling density (D2) of the second negative electrode mixture layer to the filling density (D1) of the first negative electrode mixture layer is 0.9-1.1.

Abstract: A circuit board soldering structure includes lead a plate inserted into a slit hole of a circuit board and soldered to a conductive pattern provided along the slit hole. The lead plate is made of an elastically-deformable metal plate thinner than an opening width (W) of slit hole. The lead plate includes insertion section inserted into the slit hole. The insertion section includes a bent section approaching from one of opposing inner surfaces of the slit hole facing each other toward another of the opposing inner surfaces of the slit hole. The bent section is disposed in the slit hole. The insertion section has both surfaces that are close to or contact corresponding opposing inner surfaces of the slit hole to solder the insertion section to the conductive pattern.

Abstract: This electrode plate for a non-aqueous electrolyte secondary battery has: an electrode core having an undercoat layer formed on the surface thereof; an electrode mixture layer formed on the undercoat layer of the electrode core. The undercoat layer is obtained by applying an undercoat dispersion on the surface of the electrode core and drying the same. A conductive auxiliary agent used for the undercoat layer is formed of carbon nanotubes. The average diameter of the conductive auxiliary agent is 12 nm or less. The aspect ratio (average length/average diameter) of the conductive auxiliary agent is 4000 or greater. The thickness of the undercoat layer is 0.10 ?m or less.

Abstract: According to the present disclosure, a sealed battery comprises a cylindrical exterior can having a bottom, a sealing body closing one end of the exterior can, and an electrode assembly disposed in the exterior can. The sealing body includes a valve body. The valve body includes an annular or C-shaped first frangible portion, and an annular second frangible portion having an inside-portion area smaller than an inside-portion area of the first frangible portion. The valve body is configured such that a vent pressure when the second frangible portion is fractured is lower than a vent pressure when the first frangible portion is fractured.

Abstract: A first negative electrode mixture layer contains a first negative electrode active material and a first water-soluble polymer material; and a second negative electrode mixture layer contains a second negative electrode active material and a second water-soluble polymer material. The ratio of the amount (S1) of the first water-soluble polymer material present on the surface of the first negative electrode active material to the amount (V1) of the first water-soluble polymer material present in voids among particles of the first negative electrode active material, namely S1/V1 is larger than the ratio of the amount (S2) of the second water-soluble polymer material present on the surface of the second negative electrode active material to the amount (V2) of the second water-soluble polymer material present in voids among particles of the second negative electrode active material, namely S2/V2.

Abstract: A material for endobronchial occlusion capable of repairing or replacing tissue is disclosed. The material contains a protein (A), wherein the protein (A) contains at least one of a polypeptide chain (Y) or a polypeptide chain (Y?), a total number of the polypeptide chain (Y) and the polypeptide chain (Y?) in the protein (A) is 1 to 100, the polypeptide chain (Y) is a polypeptide chain consisting of 2 to 200 tandem repeats of at least one amino acid sequence (X) among an amino acid sequence VPGVG, an amino acid sequence GVGVP 4, GPP, GAP, and an amino acid sequence GAHGPAGPK, the polypeptide chain (Y?) is a polypeptide chain in which each of a total of 5% or less of amino acids in the polypeptide chain (Y) is replaced by at least one of a lysine residue or an arginine residue, with a total number of the lysine and arginine residues being 1 to 100.

Abstract: The secondary cell—includes an exterior can, a sealing body closing one end of the exterior can, an electrode group disposed inside the exterior can, and an insulating plate disposed between the sealing body and the electrode group. In the electrode group, a positive electrode and a negative electrode are wound in a spiral shape with a separator interposed between. The insulating plate is shaped as a disc having a lead hole penetrated by a positive electrode lead drawn out from the electrode group, and a center hole penetrating the center part of the insulating plate. The outer edge of the lead hole includes a curve part positioned along an arc that is concentric with respect to the outer circumference of the insulating plate as seen in plan view, and linear parts-positioned along a chord linking the two ends of the arc.

Abstract: This electrode plate for a non-aqueous electrolyte secondary battery comprises: an electrode core with an undercoat layer formed on the surface thereof; and an electrode composite layer formed on the undercoat layer of the electrode core. The undercoat layer can be obtained by applying an undercoat dispersion liquid on the surface of the electrode core and drying the dispersion liquid. The average diameter of an electroconductive auxiliary agent used for the undercoat layer is no greater than 12 nm. The molecular weight of a binder used for the undercoat layer is no less than 900,000. The thickness of the undercoat layer is no greater than 20 ?m. The molecular weight of a binder used for the electrode composite layer is no less than 900,000.

Abstract: This nonaqueous electrolyte secondary battery is provided with an electrode body that is obtained by alternately laminating a plurality of positive electrodes and a plurality of negative electrodes, with separators being interposed therebetween. Each separator is configured of a porous resin substrate and a porous heat-resistant layer that is formed on one surface of the resin substrate and has a larger surface roughness than the resin substrate. The electrode body comprises: bonding particles that bond a negative electrode and a heat-resistant layer with each other; and bonding particles that bond a positive electrode and a resin substrate with each other. The mass of the bonding particles per unit area in a first interface between the negative electrode and the heat-resistant layer is larger than the mass of the bonding particles per unit area in a second interface between the positive electrode and the resin substrate.

Abstract: A secondary battery production method is provided, with which deformation of a current collector is reduced. The method produces a secondary battery including: an electrode assembly having positive and negative electrode plates; and a positive electrode current collector. The positive electrode plate includes a positive electrode core and a positive electrode active material layer, and the electrode assembly includes a positive electrode core-stacked portion. The method includes: an electrode assembly production step of producing the electrode assembly; and an ultrasonic bonding step of ultrasonically bonding the positive electrode current collector to the positive electrode core-stacked portion. The positive electrode current collector has a thin-walled portion.

Abstract: A negative-electrode core laminate of a portion of a negative-electrode core on which no negative-electrode active material layer is formed is bonded to a negative-electrode current collector by ultrasonic bonding. A core recess is formed in a bonding region of the negative-electrode core laminate bonded to the negative-electrode current collector by ultrasonic bonding, a region of the negative-electrode core laminate in which the core recess is formed includes a solid-state bonding layer and a central layer, the solid-state bonding layer being formed by solid-state bonding between layers of the negative-electrode core, the central layer being disposed between the solid-state bonding layers formed on both faces of the negative-electrode core. The average grain size of metal crystal grains constituting the solid-state bonding layer is smaller than the average grain size of metal crystal grains constituting the central layer.

Abstract: A positive-electrode core laminate of a portion of a positive-electrode core on which no positive-electrode active material layer is formed is bonded to a positive-electrode current collector by ultrasonic bonding. A core recess is formed in a bonding region of the positive-electrode core laminate bonded to the positive-electrode current collector by ultrasonic bonding, a region of the positive-electrode core laminate in which the core recess is formed includes a solid-state bonding layer and a central layer, the solid-state bonding layer being formed by solid-state bonding between layers of the positive-electrode core, the central layer being disposed between the solid-state bonding layers formed on both faces of the positive-electrode core, and the first average grain size of metal crystal grains constituting the solid-state bonding layer is smaller than the second average grain size of metal crystal grains constituting the central layer.

Abstract: The sealed battery according to the present disclosure is provided with: an electrode body including a negative electrode and a positive electrode having a positive electrode tab; a bottomed cylindrical exterior body for housing the electrode body; and a sealing body for sealing the opening portion of the exterior body via a gasket. The sealing body includes a metal valve body. The valve body has a peripheral edge portion and a reverse portion more protruding to the electrode body side than the peripheral edge portion. The positive electrode tab is led out from the electrode body, is connected to the reverse portion, and has a non-linear portion in a range surrounded by the electrode body and the reverse portion. The non-linear portion has a recess portion and a protrusion portion facing each other at both ends along the led-out direction of the positive electrode tab in a plan view.

Abstract: An antistatic agent for thermoplastic resins (Z) containing a block polymer (A) having a block of a hydrophobic polymer (a) and a block of a hydrophilic polymer (b) as structure units, and a C6-C18 branched alkylbenzenesulfonate (S); an antistatic resin composition (Y) containing the antistatic agent (Z) and a thermoplastic resin (E); and a molded article of the antistatic resin composition (Y).

Abstract: A battery pack includes: a connector holder that is fixed to an exterior case and has two main surfaces that include a first main surface exposed through an opening of the exterior case; a floating connector connected with a center of the connector holder in such a manner that the floating connector floats in such a manner that an orientation or a position of the floating connector is variable upward, downward, leftward, and rightward; a lead wire fixed to an inner surface of the floating connector, the lead wire extending through an inside of the exterior case, and the lead wire connecting floating connector with a circuit board; and a positioning buffer that pushes the floating connector, and positions the floating connector at a predetermined original state when an external force is not applied to the floating connector.

Abstract: A non-aqueous electrolyte secondary cell according to the present invention comprises: an electrode body constituted by a plurality of positive electrodes and a plurality of negative electrodes alternately layered one by one with separators interposed therebetween; a non-aqueous electrolyte solution; and a case that houses the electrode body and the non-aqueous electrolyte solution. A solution injection port for injecting the electrolyte solution is provided in the case. The density of a first region separated from the solution injection port is less than the density of a second region, which is near the solution injection port, in positive electrode compound layers of the positive electrodes and/or negative electrode compound layers of the negative electrodes constituting the electrode body.