Patent application number | Description | Published |
20080199768 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - In a nonaqueous electrolyte secondary battery in which an electrode plate group including a positive electrode plate and a negative electrode plate which have a positive electrode mixture layer formed on a positive electrode current collector to contain a positive electrode active material and a negative electrode mixture layer formed on a negative electrode current collector to contain a negative electrode active material, respectively, and are spirally wound or stacked with a separator interposed therebetween is encapsulated in a battery exterior packaging body with an electrolyte, the battery exterior packaging body includes a gas releasing valve for releasing gas in the battery exterior packaging body to the outside when a gas pressure in the battery exterior packaging body reaches a working pressure and is formed to be deformable where the gas pressure in the battery exterior packaging body is lower than the working pressure of the gas releasing valve. | 08-21-2008 |
20080213647 | Fuel Cell System - A fuel cell system, comprising a fuel cell having an anode, a cathode, and an electrolyte interposed therebetween and a purification device having a catalyst layer purifying substances discharged from the anode. The fuel cell system is characterized in that the purification device comprises a porous sheet having a catalyst layer and two flow passages disposed on both sides of the porous sheet, an inlet to which the substances discharged from the anode is led is formed in one flow passage, an inlet to which air is led and an outlet are formed in the other flow passage, and the substances discharged from the anode are discharged from the outlet after being purified through the porous sheet. | 09-04-2008 |
20080213670 | NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - In a non-aqueous electrolyte secondary battery including an electrode assembly including a positive electrode containing a positive electrode active material, a negative electrode containing a negative electrode active material, and a separator interposed therebetween; and a non-aqueous electrolyte, 80 wt % or more of the positive electrode active material is primary particles, and the separator is formed by a porous film, or the porous film is formed at at least one position from the following: between the positive electrode and the separator main body, between the negative electrode and the separator main body, and inside the separator main body, to capture the metal ions leached from the positive electrode active material. Such an arrangement enables a non-aqueous electrolyte secondary battery with significantly less decline in battery capacity, excellent charge and discharge cycle life performance, and capable of stable output for a longer period of time. | 09-04-2008 |
20090017356 | PROTON CONDUCTING MATERIAL, AND ELECTRODE AND FUEL CELL USING THE SAME - To provide a proton conducting material with which an electrode and a fuel cell capable of functioning in a stable manner even without humidification in a temperature range from room temperature to about 200° C. can be achieved. The proton conducting material includes a porous structural material having pores and a heterocyclic organic compound having proton conductivity. The organic compound contained inside the pores has a crystallite size D of 50 nm or less. | 01-15-2009 |
20090021097 | PERMANENT MAGNET ROTATOR AND MOTOR USING THE SAME - A motor generally has a contradictory relation between decrease of cogging torque and increase of torque density. To overcome this problem, continuous direction control is provided for anisotropy with modification of magnetic poles so that the average absolute value of differences between Mθ and 90×sin [φ{2π/(360/p)}] is set to be 3° or less, where Mθ is a direction of anisotropy with respect to a radial tangent line of a magnetic pole plane, φ is a mechanical angle, and p is the number of pole pairs. | 01-22-2009 |
20090023073 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode, a porous insulating layer, and nonaqueous electrolyte. The porous insulating layer is interposed between the positive electrode and the negative electrode. The nonaqueous electrolyte is contained at least in the porous insulating layer. The mixture layer of the positive electrode and the porous insulating layer each include a structure retainer. | 01-22-2009 |
20090061304 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A center pin is inserted in a hollow cavity of an electrode group of a lithium ion secondary battery. The center pin includes a center portion, a perimeter portion and an end portion. The center portion extends in the radial direction of the hollow cavity. The perimeter portion extends along an inner wall surface of the hollow cavity from an end of the center portion in the radial direction of the hollow cavity. The end portion extends from an end of the perimeter portion in the circumferential direction toward the inside of the hollow cavity to be away from the inner wall surface of the hollow cavity but separated from the center portion. | 03-05-2009 |
20090098446 | SECONDARY BATTERY - The secondary battery of this invention includes: an electrode assembly comprising a first electrode and a second electrode which are wound or laminated with only a heat-resistant porous insulating layer interposed between the first electrode and the second electrode; and a first current collector plate electrically connected to the first electrode. The first electrode includes a first electrode mixture layer formed on a first electrode core member. The second electrode includes a second electrode mixture layer formed on a second electrode core member. An end of the first electrode protrudes from an end of the second electrode and an end of the porous insulating layer at an end face of the electrode assembly. The protruding end of the first electrode has a part where the first electrode core member is exposed. The part where the first electrode core member is exposed is welded to the first current collector plate. The end of the porous insulating layer protrudes from an end of the first electrode mixture layer and an end of the second electrode mixture layer. The distance between the first current collector plate and the end of the porous insulating layer on the first current collector plate side is 3 mm or less. | 04-16-2009 |
20090167253 | Charging circuit, charging system and charging method - A charging circuit includes: a connecting terminal for connection to a nonaqueous-electrolyte secondary battery; a heating portion heating the nonaqueous-electrolyte secondary battery; a charging portion charging the nonaqueous-electrolyte secondary battery connected to the connecting terminal; and a control unit which allows the charging portion to charge the nonaqueous-electrolyte secondary battery after allowing the heating portion to heat the nonaqueous-electrolyte secondary battery, lowers the temperature of the nonaqueous-electrolyte secondary battery, and allows the charging portion to further charge the nonaqueous-electrolyte secondary battery. | 07-02-2009 |
20090239150 | POSITIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A Ni-containing positive electrode active material for a nonaqueous electrolyte secondary battery is formed of secondary particles each constituted by aggregated primary particles. In cross sections of the secondary particles, a total cross-sectional area of part of the primary particles at least partially exposed at the surfaces of the secondary particles is at least 40% of a total cross-sectional area of the primary particles constituting the secondary particles. | 09-24-2009 |
20090286164 | NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A non-aqueous electrolyte secondary battery includes a positive electrode, a negative electrode, a non-aqueous electrolyte, and an insulating layer formed on a surface of the positive electrode. The positive electrode includes a lithium nickel composite oxide having a layer structure, and the lithium nickel composite oxide is represented by the general formula: Li | 11-19-2009 |
20090305123 | SECONDARY BATTERY AND METHOD FOR PRODUCING THE SAME - A secondary battery includes an electrode group | 12-10-2009 |
20090311585 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A nonaqueous electrolyte secondary battery includes: a positive electrode | 12-17-2009 |
20100066192 | RADIAL-DIRECTION GAP TYPE MAGNET MOTOR - In a radial-direction gap type magnet motor, when an energy density increases, a direction change Mθ/φp of a static magnetic field with respect to a mechanic angle between different poles increases in an exponential manner and thus to decrease a cogging torque of the motor is not compatible to increase a torque density. In order to solve the problem, assuming that φt denotes a mechanic angle of a stator iron core teeth, φp denotes a mechanical angle of a magnetic pole, and Mθ denotes an angle of a static magnetic field with respect to a circumferential tangential line of a radial magnetic pole center, a radial-direction type magnet motor in which φt<φp, Mθ in a magnetic pole center region is 75 to 90°, and Mθ/φp≦7 is satisfied in the magnetic pole end region of φp×0.1°, and further, a static magnetic field generating source is configured as a magnetic anisotropic magnetic pole having an energy density (BH) max≧150 kJ/m | 03-18-2010 |
20100068627 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR FABRICATING THE SAME ( as amended - A nonaqueous electrolyte secondary battery includes: a positive electrode | 03-18-2010 |
20100112449 | POSITIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - In a positive electrode active material layer, 80% by weight or more of the total amount of a positive electrode active material is in the form of primary particles, and a conductive coating layer is provided on the surfaces of the primary particles. This sufficiently suppresses the collapse of the active material itself associated with repeated charge and discharge and the changes in volume of the active material layer associated with the collapse, without the need of increasing the content of conductive agent in the positive electrode active material layer. This particularly prevents part of the positive electrode active material particles from being isolated from the electrically conductive network in the positive electrode active material. As a result, the conductive network firmly formed among the primary particles is maintained, and therefore, both the output characteristics and the life characteristic can be improved to a high degree, and a higher output power and a longer life of the battery can be achieved. | 05-06-2010 |
20100136429 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A nonaqueous electrolyte secondary battery includes a positive electrode ( | 06-03-2010 |
20100209749 | SEALED SECONDARY BATTERY - A battery casing | 08-19-2010 |
20100218365 | MANUFACTURING METHOD OF RARE EARTH-IRON RING MAGNET WITH CONTINUOUS ORIENTATION CONTROLLED ANISOTROPY - A process of manufacturing segments, an anisotropic direction of which is continuously changed in a plane vertically by a uniform magnetic field maintained in a constant direction and a process of arranging a plurality of segments on a circumference, extruding the segments in a ring shape by rheology based on the viscous deformation of the segments, from one thrust-direction end surface of the segments, and subsequently compressing the segments from both thrust-direction end surfaces of the segments are necessarily included. A ring magnet, anisotropy of which is controlled in a continuous direction, is provided, and a source for generating a static magnetic field has energy density (BH) max≧160 to 180 kJ/m | 09-02-2010 |
20100247991 | BATTERY AND METHOD FOR PRODUCING THE SAME - It is possible to ensure welding of an exposed portion of an electrode core member protruding from one end surface of an electrode group to a desired connection portion of a current collector plate by constituting a battery wherein an end portion of a first electrode is protruding from an end portion of a second electrode and an end portion of a separator on one end surface of an electrode group, the protruding end portion of the first electrode includes an exposed portion of a first electrode core member, the exposed portion of the first electrode core member is welded to a connection portion on one surface of the first current collector plate, and an insulating layer is formed in an area except for a reverse face portion of the connection portion on the other surface of the first current collector plate. | 09-30-2010 |
20100310938 | NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - The present invention mainly relates to non-aqueous electrolyte secondary batteries. The present invention intends to provide a non-aqueous electrolyte secondary battery having excellent cycle characteristics and excellent storage characteristics. | 12-09-2010 |
20100316897 | SECONDARY BATTERY - A secondary battery has a so-called tabless structure. An electrode group ( | 12-16-2010 |
20110008661 | LITHIUM ION SECONDARY BATTERY AND METHOD FOR PRODUCING THE SAME - A lithium ion secondary battery of the invention includes an electrode structure including an electrode group composed of a strip-shaped laminate or winding including a positive electrode in which a positive electrode active material layer is attached to a positive electrode current collector, a negative electrode, and a separator; a positive electrode current collector plate including aluminum foil; and a negative electrode current collector plate electrically connected to the negative electrode. The positive electrode has, at one longitudinally extending end edge of the laminate, a positive electrode current collector-exposed portion protruding beyond the negative electrode. The positive electrode current collector plate is electrically connected to the positive electrode by applying a non-corrosive flux containing a fluoride to at least one of the positive electrode current collector-exposed portion and the positive electrode current collector plate, and then welding the positive electrode current collector plate to the positive electrode current collector-exposed portion. | 01-13-2011 |
20110027635 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME - The nonaqueous electrolyte secondary battery of the invention includes: a wound-type electrode group including a long positive electrode, a long negative electrode, and a separator disposed between the positive electrode and the negative electrode; a nonaqueous electrolyte; and a prismatic battery case accommodating the electrode group and the nonaqueous electrolyte. A horizontal cross-section of the electrode group has a major axis and a minor axis. The positive electrode includes a positive electrode current collector and a positive electrode active material layer disposed thereon, and the negative electrode includes a negative electrode current collector and a negative electrode active material layer disposed thereon. A tensile strength of the positive electrode when an elongation percentage in a longitudinal direction of the positive electrode is 1% is not greater than 15 N/cm. | 02-03-2011 |
20110033750 | POSITIVE ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD FOR PRODUCING THE SAME, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A positive electrode active material for a non-aqueous electrolyte secondary battery of the present invention includes composite oxide particles including lithium, nickel, and an element M, the element M being at least one of aluminum and cobalt. The composite oxide particles include primary particles and each particle of the primary particles includes a surface portion and an inner portion. A content of the element M in the surface portion is higher than a content of the element M in the inner portion, and a proportion of the primary particles relative to all of the composite oxide particles is 80 to 100 wt %. According to the invention, a positive electrode active material for a non-aqueous electrolyte secondary battery that has excellent cycle characteristics and storage characteristics and is suitable for use in a wide range of the state of charge and in a high-temperature environment and a non-aqueous electrolyte secondary battery using the same can be obtained. | 02-10-2011 |
20110091795 | FUEL CONTAINER FOR STORING FUEL LIQUID FOR FUEL CELL AND FUEL CELL PACK - A fuel container for storing a fuel liquid for a fuel cell has a double wall structure including an inner container for storing a fuel liquid and an outer container for housing the inner container, and a material capable of retaining the fuel between the inner container and the outer container. A fuel cell pack includes a fuel cell and a fuel container for storing a fuel liquid for the fuel cell. The fuel cell pack includes a double wall exterior casing having an inner casing for housing the fuel cell and the fuel container and an outer casing for housing the inner casing, and a material capable of retaining the fuel between the inner casing and the outer casing. | 04-21-2011 |
20130293058 | CORE MATERIAL, STATOR CORE, AND MOTOR PROVIDED WITH STATOR CORE - In a core material according to the present invention, a predetermined number of core pieces, each having a tooth portion and a yoke portion, are connected to each other via connecting portions. Each of the connecting portions includes: a V-shaped notch portion; a through hole that is formed at a tapered portion of the notch portion with a diameter elongated in a connection direction; and a thin portion that is formed outside of the through hole and connects the core pieces to each other. The width of the thin portion is more increased apart from the axis of symmetry of two sides constituting the V shape of the notch portion, and further, an intersection between extension lines of the two sides constituting the V shape lies within 0.3 W from the inner side of the thin portion in a notch direction and within the thin portion when W designates the width of the thin portion along the axis of symmetry. | 11-07-2013 |
20140331485 | METHOD FOR FABRICATING A NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A nonaqueous electrolyte secondary battery includes: a positive electrode | 11-13-2014 |