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 |
20080213668 | Nonaqueous Electrolyte Secondary Battery - A nonaqueous electrolyte secondary battery has a positive electrode including an active material of complex oxides capable of storing and emitting lithium ions, a negative electrode, a separator, and an electrolytic solution made of a nonaqueous solvent. A discharge curve of this battery when being discharged with a constant power has two or more points of step-like flections near the end of electrical discharge in a range of 5% to 20% of a discharge capacity thereof as determined from an initial discharge voltage in a state of full charge to a discharge-end voltage. | 09-04-2008 |
20080241684 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME - A lithium ion secondary battery includes a positive electrode, a negative electrode, a porous insulating layer and a nonaqueous electrolyte. The porous insulating layer is provided between the positive electrode material mixture layer and the negative electrode material mixture layer and contains a material which does not have a shutdown function. The positive electrode is provided with a PTC layer extending substantially parallel to the positive electrode collector and the negative electrode is provided with a PTC layer extending substantially parallel to the negative electrode collector. Each of the PTC layers contains a material having a positive temperature coefficient of resistance. | 10-02-2008 |
20080254355 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A lithium ion secondary battery includes a positive electrode, a negative electrode, a porous insulating layer and a nonaqueous electrolyte. The porous insulating layer is provided between the positive electrode and the negative electrode and contains a material which does not have a shutdown function. Each of the positive electrode and the negative electrode includes an expandable element. | 10-16-2008 |
20080299457 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR MANUFACTURING POSITIVE ELECTRODE OF NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A nonaqueous electrolyte secondary battery including a positive electrode including a positive electrode current collector carrying a positive electrode material mixture layer thereon, a negative electrode including a negative electrode current collector carrying a negative electrode material mixture layer thereon, a separator provided between the positive electrode and the negative electrode and a nonaqueous electrolyte solution, wherein the positive electrode current collector is a conductive body containing aluminum and the positive electrode material mixture layer includes a first material mixture layer and a second material mixture layer formed on the first material mixture layer. The first material mixture layer is made of a first material mixture containing a first organic material which is soluble or dispersible in water and the second material mixture layer is made of a second material mixture containing a second organic material which is soluble or dispersible in an organic solvent. | 12-04-2008 |
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 |
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 |
20090202907 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR MANUFACTURING ELECTRODE OF NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A nonaqueous electrolyte secondary battery comprising a positive electrode | 08-13-2009 |
20090242072 | POSITIVE ELECTRODE PLATE FOR ALKALINE STORAGE BATTERY AND METHOD FOR PRODUCING THE SAME - An alkaline storage battery including a strip-shaped porous metal substrate and a material mixture filled into the substrate. The substrate has an unfilled portion where the material mixture is not filled along at least one of two longitudinal sides of the substrate. The substrate has a weight per unit area of 150 to 350 g/m | 10-01-2009 |
20090274951 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR PRODUCING THE SAME - A nonaqueous electrolyte secondary battery includes an electrode group in which a positive electrode plate including a positive electrode active material formed on a positive electrode current collector and a negative electrode plate including a negative electrode active material formed on a negative electrode current collector are wound with a separator interposed therebetween, and a tensile elongation rate of the positive electrode plate is larger than a tensile elongation rate of the negative electrode plate. | 11-05-2009 |
20090311585 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A nonaqueous electrolyte secondary battery includes: a positive electrode | 12-17-2009 |
20100045236 | DISCHARGE CONTROLLER - A discharge controller includes secondary battery, a switch section for opening/closing a discharge path from the secondary battery to a load, a voltage detector for detecting a terminal voltage of the secondary battery, and a cut-off voltage control section for controlling the switch section to be opened when the terminal voltage as detected by the voltage detector is not more than a predetermined cut-off voltage of discharge V | 02-25-2010 |
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 |
20100136429 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A nonaqueous electrolyte secondary battery includes a positive electrode ( | 06-03-2010 |
20110008679 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR FABRICATING THE SAME - A nonaqueous electrolyte secondary battery includes an electrode group | 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 |
20110076563 | POSITIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR PRODUCING THE SAME - A positive electrode for a non-aqueous electrolyte secondary battery includes a current collector including Al, and a positive electrode active material layer adhering to the current collector. The positive electrode active material layer includes a composite oxide containing Li and a transition metal element Me. The positive electrode active material layer has, at least on the current collector side, a region in which Al is diffused from the current collector. | 03-31-2011 |
20110104569 | POSITIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY USING THE SAME, AND METHOD FOR PRODUCING THE SAME - A method for producing a positive electrode for non-aqueous electrolyte secondary battery of the present invention includes the steps of: (1) producing a positive electrode precursor by applying a positive electrode slurry including a positive electrode active material comprising a lithium-containing composite oxide including nickel, a binder, and a conductive agent on a positive electrode core material, the positive electrode active material including secondary particles having an average particle diameter of 8 μm or more, and then drying the positive electrode slurry to form a positive electrode material mixture layer; and (2) rolling while heating the positive electrode precursor to produce a positive electrode in which 3.5 g or more of the positive electrode active material is included per 1 cm | 05-05-2011 |
20110111302 | ELECTRODE PLATE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD FOR FABRICATING THE SAME, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - Winding dislocation in forming an electrode group of a nonaqueous electrolyte secondary battery is prevented. | 05-12-2011 |
20110129736 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME - A nonaqueous electrolyte secondary battery includes: a positive electrode | 06-02-2011 |
20110135982 | NEGATIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND FABRICATION METHOD THEREOF, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A negative electrode, whose tensile strength is 15 N/cm or lower when the percentage elongation in the longitudinal direction is 1%, is used in a non-aqueous electrolyte secondary battery including: a flat electrode group | 06-09-2011 |
20110135997 | SECONDARY BATTERY, BATTERY PACK INCLUDING SECONDARY BATTERY, AND METHOD FOR FABRICATING SECONDARY BATTERY - The disclosed secondary battery is a flat secondary battery | 06-09-2011 |
20110136010 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME - A nonaqueous electrolyte secondary battery includes: a positive electrode 4 including a positive electrode current collector and a positive electrode material mixture layer containing a positive electrode active material and a binder and provided on the positive electrode current collector; a negative electrode 5; a porous insulating layer 6 interposed between the positive electrode 4 and the negative electrode 5; and a nonaqueous electrolyte. The positive electrode 4 has a tensile extension percentage of 3.0% or more. The binder is made of copolymer containing vinylidene fluoride and hexafluoropropylene. | 06-09-2011 |
20110136015 | METHOD OF PRODUCING NEGATIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, NEGATIVE ELECTRODE, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY USING THE SAME - A method of producing a non-aqueous electrolyte secondary battery of the present invention includes the steps of: (1) producing a negative electrode precursor by applying a negative electrode slurry including graphite particles and a binder onto a negative electrode core material and drying the same to form a negative electrode material mixture layer; and (2) producing a negative electrode by compressing while heating the negative electrode precursor at a temperature at which the binder softens. In the step (2), a temperature at which the negative electrode precursor is heated and a force with which the negative electrode precursor is compressed are controlled such that the compressed negative electrode material mixture layer in the negative electrode includes 1.5 g or more of the graphite particles per 1 cm | 06-09-2011 |
20110143199 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME - A nonaqueous electrolyte secondary battery includes: a positive electrode 4 including a positive electrode current collector and a positive electrode material mixture layer containing a positive electrode active material and a binder and provided on the positive electrode current collector; a negative electrode 5; a porous insulating layer 6 interposed between the positive electrode 4 and the negative electrode 5; and a nonaqueous electrolyte. The positive electrode 4 has a tensile extension percentage of 3.0% or more. The binder is made of polyvinylidene fluoride. The positive electrode current collector has a softening temperature lower than a crystalline melting point of the binder. | 06-16-2011 |
20110151296 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR FABRICATING NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A nonaqueous electrolyte secondary battery includes an electrode group ( | 06-23-2011 |
20110165445 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR FABRICATING THE SAME - An electrode group | 07-07-2011 |
20110183173 | RECTANGULAR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME - A rectangular nonaqueous electrolyte secondary battery includes a positive electrode ( | 07-28-2011 |
20110195307 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR FABRICATING THE SAME - A nonaqueous electrolyte secondary battery includes a positive electrode ( | 08-11-2011 |
20110223456 | ELECTRODE, SECONDARY BATTERY, AND FABRICATION METHOD OF SECONDARY BATTERY - Disclosed is an electrode used in a wound electrode assembly, the electrode including: a current collector; a first material mixture layer including a first active material, which is formed on one surface of the current collector; and a second material mixture layer including a second active material, which is formed on the other surface of the current collector. When an electrode assembly is assembled, the first material mixture layer is wound in a manner such that it is positioned on the outer side of the second material mixture layer. In a part corresponding to a predetermined region of a cross section of said electrode assembly perpendicular to the winding axis thereof, the radius of curvature of the predetermined region being 3.0×10 | 09-15-2011 |
20110244323 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR FABRICATING THE SAME - A nonaqueous electrolyte secondary battery includes a positive electrode | 10-06-2011 |
20110244325 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR FABRICATING THE SAME - A nonaqueous electrolyte secondary battery includes a positive electrode ( | 10-06-2011 |
20110287288 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY FABRICATING METHOD - A nonaqueous electrolyte secondary battery includes an electrode group ( | 11-24-2011 |
20120007564 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR CHARGING THE SAME - A nonaqueous electrolyte secondary battery includes: a positive electrode | 01-12-2012 |
20140020242 | METHOD FOR FABRICATING A NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A nonaqueous electrolyte secondary battery includes: a positive electrode | 01-23-2014 |
20140141305 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - In a wound electrode group, a positive electrode | 05-22-2014 |
20140178732 | NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - Provided is a non-aqueous electrolyte secondary battery having a high capacity and an improved cycle life. The battery includes an electrode group and a non-aqueous electrolyte, and has a volume energy density of 650 Wh/L or more. The electrode group includes wound positive and negative electrodes with a separator interposed therebetween. The positive and negative electrodes each include a current collector and a material mixture layer adhering thereto. The positive and negative electrode material mixture layers each have a porosity P | 06-26-2014 |
20140322591 | NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - Disclosed is a non-aqueous electrolyte secondary battery including a positive electrode, a negative electrode, a non-aqueous electrolyte, and a battery case containing them. The negative electrode includes SiO | 10-30-2014 |
20140331485 | METHOD FOR FABRICATING A NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A nonaqueous electrolyte secondary battery includes: a positive electrode | 11-13-2014 |