Patent application number | Description | Published |
20080233477 | POSITIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY AND LITHIUM ION SECONDARY BATTERY USING THE SAME - According to a positive electrode for a lithium ion secondary battery comprising a current collector and a mixture layer containing a transition metal-containing complex oxide as a positive electrode active material formed on the current collector, wherein the mixture layer has surface roughness of 0.1 μm or more and 0.5 μm or less in terms of a Ra value and the mixture layer has a surface treated layer treated with a coupling agent on the surface, it is possible to obtain a positive electrode which is excellent in suppression of moisture absorption. By using the positive electrode, it is possible to obtain a lithium ion secondary battery which is excellent in storage characteristics and causes less battery swelling since the amount of a gas generated upon charging and discharging decreases. | 09-25-2008 |
20080285193 | POWER SUPPLY APPARATUS - A power supply apparatus includes: a plurality of batteries; a changeover portion switching the connection between the plurality of batteries; a short-circuit battery detection portion, if an internal short-circuit is produced in any of the plurality of batteries, detecting this internal short-circuit battery; and a changeover control portion, if the short-circuit battery detection portion detects the internal short-circuit battery, allowing the changeover portion to switch the connection between the plurality of batteries in such a way that this internal short-circuit battery and at least one of the other batteries are connected in series to thereby form a closed circuit. | 11-20-2008 |
20100040940 | ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND PRODUCTION METHOD THEREOF - An electrode in sheet form includes a current collector and an electrode mixture layer carried on each side thereof. The electrode is bent in the longitudinal direction thereof, to cause a large number of cracks in at least the electrode mixture layer to be positioned on the inner side of the current collector when wound, such that the cracks extend from the surface of the electrode mixture layer to the current collector in the direction intersecting with the longitudinal direction of the electrode. This bending process includes the steps of: bending the electrode at a curvature that is smaller than that of the winding core at least once; and thereafter bending the electrode at a curvature that is equal to or larger than that of the winding core. For example, this process is performed by arranging rollers such that their diameters decrease gradually and pressing the electrode against these rollers. This invention provides an electrode that does not break when wound to form an electrode assembly. | 02-18-2010 |
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 |
20100136412 | METHOD FOR PRODUCING LITHIUM-CONTAINING COMPOSITE OXIDE AND NON-AQUEOUS SECONDARY BATTERY - A method for producing a lithium-containing composite oxide represented by General Formula (1): | 06-03-2010 |
20110111276 | ELECTRODE PLATE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - An electrode plate for a nonaqueous electrolyte secondary battery includes: a current collector made of metal foil in the shape of a band; a mixture layer containing an active material and provided on each surface of the current collector; and an extension lead connected to the current collector. The current collector has an exposed portion having first and second surfaces on each of which the mixture layer is not provided. The exposed portion extends perpendicularly to a longitudinal direction of the current collector. The extension lead is connected to the first surface of the exposed portion. A portion of the first surface on which the mixture layer is not provided has a width larger than that of a portion of the second surface on which the mixture layer is not provided. | 05-12-2011 |
20110111297 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A nonaqueous electrolyte secondary battery including: an electrode group which includes a positive electrode containing lithium-containing composite oxide, a negative electrode capable of inserting and extracting lithium ions, and a porous insulator interposed between the positive electrode and the negative electrode, and is sealed in a battery case together with a nonaqueous electrolyte, wherein the porous insulator has a Gurley number of 100 sec/100 ml to 1000 sec/100 ml, both inclusive, and an average pore diameter of 0.05 μm to 0.15 μm, both inclusive. | 05-12-2011 |
20110117437 | POSITIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD FOR FABRICATING THE SAME, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - The invention provides a positive electrode for a nonaqueous electrolyte secondary battery which is capable of alleviating generation of gas during charge/discharge with a nonaqueous electrolyte solution penetrated therein, and a method for fabricating the same. | 05-19-2011 |
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 |
20110200869 | LITHIUM SECONDARY BATTERY AND METHOD FOR FABRICATING THE SAME - An electrode group | 08-18-2011 |
20110287297 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A separator ( | 11-24-2011 |
20120032647 | METHOD FOR DETERMINING COMPLETION OF CHARGE OF LITHIUM ION SECONDARY BATTERY, METHOD FOR DETERMINING TERMINATION OF DISCHARGE OF LITHIUM ION SECONDARY BATTERY, CHARGE CONTROL CIRCUIT, DISCHARGE CONTROL CIRCUIT, AND POWER SUPPLY - A method for determining completion of charge of a long-duration lithium ion secondary battery is provided. | 02-09-2012 |
20140331485 | METHOD FOR FABRICATING A NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A nonaqueous electrolyte secondary battery includes: a positive electrode | 11-13-2014 |
20140342230 | POSITIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - Disclosed is a positive electrode for a non-aqueous electrolyte secondary battery, including a current collector and a mixture layer attached thereto. The mixture layer includes an active material including particles of a first active material, i.e., a lithium-manganese composite oxide, and particles of a second active material, i.e., a lithium-nickel composite oxide. A proportion of the first active material particles in the active material is 51 vol % to 90 vol %. A volume-based particle size distribution of the first active material particles has a first peak on a larger particle side and a second peak on a smaller particle side. A first particle size D | 11-20-2014 |