Abstract: A positive plate for a nonaqueous rechargeable battery includes a positive electrode substrate and a positive electrode mixture layer that contains at least a positive electrode active material. Particles of the positive electrode active material having a specific surface area of a range of 1.5 m2/g to 3.0 m2/g prior to manufacture of the positive plate for the nonaqueous rechargeable battery are used. A difference between a specific surface area of the positive plate for the nonaqueous rechargeable battery after manufacturing the positive plate for the nonaqueous rechargeable battery and the specific surface area of the particles of the positive electrode active material prior to manufacture of the positive plate for the nonaqueous rechargeable battery is in a range of 0.66 m2/g to 1.8 m2/g.

Abstract: This sealed battery is provided with a bottomed tubular outer can for accommodating an electrode body, and a sealing body for sealing an opening part of the outer can. The outer can has a gas exhaust valve which ruptures when the pressure inside the battery reaches a predetermined value. The gas exhaust valve includes a plurality of linear grooves. The sealed battery is characterized in that; the cross-sectional shape of the grooves is a tapering shape in which the width of open ends on the side of the surface of the outer can is shorter than the width of the bottom; the grooves have at least one crossing part; and the crossing part has a flat section in the bottom.

Abstract: This non-aqueous electrolyte secondary battery is characterized by comprising: a wound electrode body in which a positive electrode and a negative electrode are wound via a separator. Said battery is also characterized in that: when the separator is divided into five parts in the width direction and the five divided regions are defined as a region A positioned on one end of the separator in the width direction, a region B positioned on the other end of the separator in the width direction, a region C positioned in the center of the separator in the width direction, a region D positioned between the region A and the region C, and a region E positioned between the region B and the region C, then the void ratio of the region D and the region E is greater than the void ratio of the region A, the region B, and the region C.

Abstract: A battery with a laminate film outer package, configured by bonding film materials; and a flat electrode body contained in the laminate film outer package having a positive electrode with a positive electrode non-coated part, without a positive electrode mixture layer and an exposed positive electrode core body midway in the longitudinal direction; and a negative electrode has a negative electrode non-coated part without a negative electrode mixture layer and an exposed negative electrode core body midway in the longitudinal direction; and a positive electrode tab is bonded and electrically connected to the positive electrode non-coated part; and a negative electrode tab is bonded and electrically connected to the negative electrode non-coated part, both tabs generally pass through the center of the flat electrode body in the thickness direction, while being positioned on the same side of a virtual plane perpendicular to the thickness direction of the flat electrode body.

Abstract: A non-aqueous electrolyte rechargeable battery includes an electrode body, a negative electrode current collector, and a positive electrode current collector. The electrode body includes a stack of a negative electrode sheet, a positive electrode sheet, and a separator. The negative electrode sheet includes a negative electrode base, a negative electrode mixture layer, and a negative electrode connecting portion. The positive electrode sheet includes a positive electrode base, a positive electrode mixture layer, a positive electrode connecting portion, and an insulating protective layer. The insulating protective layer includes an outer insulating protective layer on a surface relatively far from the positive electrode current collector in a stacking direction of the electrode body and an inner insulating protective layer on a surface relatively close to the positive electrode current collector in the direction.

Abstract: An insulating plate for a secondary battery includes a wound electrode group, an electrolyte, a cylindrical battery case that houses the electrode group and the electrolyte, and a sealing body that seals an opening of the battery case and includes a discharge valve. The insulating plate is disposed between the electrode group and the sealing body and has a disk shape with a thickness T of 0.1 mm or more. The insulating plate has a first hole formed centrally therein and at least one second hole formed around the first hole so as to extend along the outer periphery of the disk shape. The ratio (=T/D) of the thickness T to a diameter D of the insulating plate is 0.016 or less, and the insulating plate has an opening ratio of 36% or less.

Abstract: A method for manufacturing a battery pack includes forming a positive electrode plate; forming a negative electrode plate; forming an electrode body; forming a battery cell; applying a binding load to battery cells; and initially charging the battery cells. When “A mg/cm2” represents a mass of a positive electrode active material on the positive electrode substrate, “C cm3/cm2” represents a volume of pores in the positive electrode substrate, “B mg/cm2” represents a mass of a negative electrode active material on the negative electrode substrate, “D cm3/cm2” represents a volume of pores in the negative electrode substrate, “E cm3/cm2” represents a volume of pores in the separator, and “F N/mm2” represents pressure applied to an opposing portion of a case of the electrode body facing a flat surface of the electrode body, a value of (A+B)/{(C+D+E)/F} is between 1300 and 3000, inclusive.

Abstract: A method for joining a current collector includes (1) providing an electrode body that includes electrode plate end portions overlapping each other in a thickness-wise direction of the electrode plate end portions, (2) providing a current collector including a folded portion, where the folded portion includes two opposing holding walls that hold the electrode plate end portions of the electrode body in between, and a top part that connects the two holding walls and includes an opening, and (3) brazing edges of the electrode plate end portions, exposed from the opening of the top part, to the two holding walls to join the current collector to the electrode body.

Abstract: A nonaqueous electrolyte secondary battery is provided with a bottomed tubular outer can accommodating an electrode body, and a sealing body for sealing an opening portion of the outer can. A crimped portion for crimping and securing the sealing body is formed in the outer can by bending the edge portion of the opening portion inward in the radial direction, and the sealing body includes a rupture disk, a cathode cap including a flange, and a metal height adjusting portion for adjusting the height of the crimped portion.

Abstract: A roll exchange mechanism for a reduction roll apparatus, capable of contributing to simplifying work for replacing a roller is provided. A roll exchange mechanism for a reduction roll apparatus according to the present disclosure includes a rail member disposed parallel to a rotation shaft of a roller of the reduction roll apparatus, a placement part disposed in a support frame of a roll unit and configured to be placed on the rail member, a receiving part disposed in an apparatus frame of the reduction roll apparatus and configured so that the rail member is placed thereon, and an opening formed in the apparatus frame of the reduction roll apparatus and configured so that the roll unit can be inserted therein and removed therefrom.

Abstract: Disclosed is a blade apparatus for wind power generation, which includes: a blade body, one end thereof being provided with a blade-root connecting portion; and a blade root assembly, including a plurality of blade root segments arranged in a circumferential direction of the blade body to form a body of revolution, each blade root segment being detachably connected to a corresponding portion of the blade-root connecting portion. The blade root assembly with a plurality of blade root segments is adopted, so that the dimension of a single blade root segment is greatly reduced, thus effectively reducing the difficulties in manufacture and transportation. Meanwhile, the overall dimension of the blade root assembly can be further increased to match with a larger blade body, which is beneficial to further improve the swept area of blade and generated output of wind power generation device.

Abstract: A nonaqueous electrolyte secondary battery (10) in an example embodiment includes a positive electrode (11) having a lithium metal composite oxide, and a negative electrode (12) having graphite. The lithium metal composite oxide includes first composite oxide particles which are secondary particles formed by aggregation of primary particles having an average particle size of 50 nm to 5 ?m, and second composite oxide particles which are non-aggregated particles having an average particle size of 2 ?m to 20 ?m. The positive electrode (11) has lower initial charge/discharge efficiency than the initial charge/discharge efficiency of the negative electrode (12).

Abstract: A battery system includes a nickel-metal hydride battery and an ECU that controls charging and discharging of the nickel-metal hydride battery. The ECU calculates a discharge electricity amount showing an integrated value of a current discharged from the nickel-metal hydride battery, and further calculates ?SOC of the nickel-metal hydride battery in a prescribed time period. The ECU calculates a charge reserve capacity of the nickel-metal hydride battery based on a temperature of the nickel-metal hydride battery, the discharge electricity amount, and the ?SOC.

Abstract: A non-aqueous electrolyte secondary battery positive electrode that is characterized by comprising a positive electrode collector and a positive electrode mixture layer that is provided on the positive electrode collector and includes a positive electrode active material and a conductive material that includes carbon nanotubes. The non-aqueous electrolyte secondary battery positive electrode is also characterized in that, when the positive electrode mixture layer is bisected in the thickness direction, the mass ratio of carbon nanotubes to positive electrode active material in an upper-half region that is on a top surface side is smaller than the mass ratio of carbon nanotubes to positive electrode active material in a lower-half region that is on the positive electrode collector side.

Abstract: An inspection apparatus includes a support, an image capturing unit, and a controller. The support supports a workpiece. The image capturing unit generates captured image data including an image of the workpiece. The controller executes image processing on the captured image data to evaluate the workpiece. The support includes an engraved portion, including a groove and serving as a reference for inspection, on a surface of the support in a non-contact region that is free from contact with the workpiece. The engraved portion is included in an image capturing range of the image capturing unit. The controller evaluates the workpiece using a dimension of the engraved portion that is stored in the controller in advance and a reference image that is an image of the engraved portion.

Abstract: A battery including: a battery can having a cylindrical portion, a bottom wall closing one end of the cylindrical portion, and an open rim continuous with the other end of the cylindrical portion; an electrode body housed in the cylindrical portion; and a sealing body fixed to the open rim so as to seal an opening defined by the open rim. The sealing body includes a sealing plate and a gasket disposed at a peripheral portion of the sealing plate. The gasket has at least one protruding portion configured to restrict insertion of the sealing body into the open rim.

Abstract: A non-aqueous electrolyte secondary battery is characterized by comprising an electrode body in which a positive electrode and a negative electrode face each other with a separator therebetween, and a battery case that accommodates the electrode body, wherein: the positive electrode has a positive electrode mixture layer containing a positive electrode active material; and when the non-aqueous electrolyte secondary battery is used in a fixed state, and the electrode body in the fixed state is bisected in the vertical direction, a dibutyl phthalate oil absorption amount of the positive electrode active material contained in the positive electrode mixture layer disposed in the top half region is higher than a dibutyl phthalate oil absorption amount of the positive electrode active material contained in the positive electrode mixture layer disposed in the bottom half region.

Abstract: A sealed battery including a battery case that includes a cylindrical exterior can having a bottom and an opening sealing body that closes an opening of the outer can; a gasket that is arranged between the exterior can and the opening sealing body; and an electrode body. The opening sealing body includes: a metal plate with an annular part to which an electrode lead is electrically connected, and a disconnecting part that is separated from the annular part when the inner pressure of the battery case exceeds a predetermined threshold; a valve body that is arranged further to the outside of the battery case than the metal plate; and an insulating plate that is arranged between the metal plate and the valve body. The insulating plate or the gasket is provided with an elastic deformation part that deforms in the direction of the valve body.

Abstract: A material core (100) for wind turbine blade, comprising: a core body (101); a first groove (102) extending from a first side (104) of the core body (101), in a first direction (106), into a depth d1 in the core body (101); and a second groove (103) extending from a second side (105) of the core body (101) facing away from the first side (104), in a direction opposite to the first direction (106), into a depth d2 in the core body (101), wherein the second groove (103) is parallel to the first groove (102), and wherein: d2=t?d1+x, 1 mm?x<d1, wherein t is a thickness of the core body (101), and wherein a distance between the first and second grooves is o, wherein: 1 mm?o?5 mm.

Abstract: A method for extracting heat includes: during a first period: opening a first passage between a first chamber and a third chamber to compress gas in the third chamber; and opening a second passage between a second chamber and a fourth chamber to decompress gas in the fourth chamber. The method further includes during a second period following the first period: closing the first passage and the second passage; enabling a gas flow into the first chamber, the gas flow comprising gas having a first temperature; and outputting gas having a temperature that is lower than the first temperature of the gas in the second chamber.