Patent application number | Description | Published |
20120015238 | NON-AQUEOUS ELECTROLYTE SECONDARY CELL - There is provided a non-aqueous electrolyte secondary cell that exhibits excellent cycle characteristics over a wide temperature range from low to high temperature. This object can be realized by adopting the following configuration. | 01-19-2012 |
20130196189 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD FOR MANUFACTURING NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND VEHICLE COMPRISING NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A nonaqueous electrolyte secondary battery includes a current interruption mechanism in at least one of a conductive pathway from the positive electrode sheet to the outside of the outer body and a conductive pathway from the negative electrode sheet to the outside of the outer body. The current interruption mechanism interrupts electric current when the pressure in the outer body exceeds a predetermined value. The nonaqueous electrolyte contains an overcharge inhibitor. The overcharge inhibitor is contained in an amount of 3.0% or more and 4.5% or less with respect to the spatial volume in the outer body in terms of volume ratio. The nonaqueous electrolyte secondary battery has excellent output characteristics in a low temperature condition and can sufficiently ensure reliability even when the battery is overcharged through two-step charging in a low temperature condition. | 08-01-2013 |
20130230748 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD FOR MANUFACTURING NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND VEHICLE COMPRISING NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A method for manufacturing a nonaqueous electrolyte secondary battery including a current interruption mechanism that interrupts electric current includes disposing, in the outer body, an electrode assembly and a nonaqueous electrolyte containing a compound having at least one of a cyclohexyl group and a phenyl group, adjusting the nonaqueous electrolyte to contain the compound having at least one of a cyclohexyl group and a phenyl group in an amount of from 2.5 g/m | 09-05-2013 |
20140023898 | NON-AQUEOUS ELECTROLYTE SECONDARY CELL - The present invention aims to productively provide a non-aqueous electrolyte secondary cell having excellent safety and high capacity. The above object can be achieved by adopting the following configuration. The non-aqueous electrolyte secondary cell comprises a wound electrode assembly formed by winding a positive electrode having a positive electrode active material layer, a negative electrode having a negative electrode active material layer and a separator separating the positive and negative electrodes, wherein: the filling density of the positive electrode active material layer is 2.0-2.8 g/cc; the filling density of the negative electrode active material layer is 1.0-1.5 g/cc; each thickness of the positive electrode and the negative electrode is 100-200 μm; the thickness of the separator is 10-30% of each thickness of the positive and negative electrodes; and the air permeability per unit thickness of the separator is 7.0-27.0 sec/100 cc•μm. | 01-23-2014 |
20140023915 | NON-AQUEOUS ELECTROLYTE SECONDARY CELL - The present invention aims to productively provide a non-aqueous electrolyte secondary cell having high capacity. This object can be achieved by adopting the following configuration. A non-aqueous electrolyte secondary cell comprises a non-aqueous electrolyte and an electrode assembly having a positive electrode, a negative electrode and a separator; the positive electrode has a positive electrode core and a positive electrode active material layer; the negative electrode has a negative electrode core and a negative electrode active material layer; a protective layer is provided on the positive electrode active material layer and/or the negative electrode active material layer; the total thickness of the protective layers is 10 to 40% of that of the separator; a porosity of the protective layer is larger than that of any of the positive and negative electrode active material layer; and the non-aqueous electrolyte contains a non-aqueous solvent and two or more kinds of lithium compounds. | 01-23-2014 |
20140023919 | NON-AQUEOUS ELECTROLYTE SECONDARY CELL - The present invention aims to provide the following non-aqueous electrolyte secondary cell having excellent safety. A non-aqueous electrolyte secondary cell comprises an electrode assembly having positive and negative electrodes. The positive electrode has a core exposed portion (formed by exposing at least one side edge of a belt-shaped core along the longitudinal direction of the core), a active material layer formed on the core, and a protective layer (formed on the core exposed portion near the active material layer and having a lower conductivity than the core). The negative electrode has first and second negative electrode core exposed portions, in which both side edges of a belt-shaped negative electrode core are exposed along the longitudinal direction of the core, and a negative electrode active material layer formed on the negative electrode core. And the whole of the second negative electrode core exposed portion is opposite to the protective layer. | 01-23-2014 |
20140041209 | METHOD OF MANUFACTURING NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - Provided is a method of manufacturing a nonaqueous electrolyte secondary battery. The method includes: forming an electrode assembly including a positive electrode plate and a negative electrode plate disposed with a separator interposed therebetween; arranging the electrode assembly and a nonaqueous electrolyte containing LiBOB (lithium bis(oxalato)borate) and LiPF | 02-13-2014 |
20140045012 | NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - To provide a non-aqueous electrolyte secondary battery having high capacity and superior safety and cycle characteristics. | 02-13-2014 |
20140045013 | NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - To provide a non-aqueous electrolyte secondary battery having high capacity and superior safety. | 02-13-2014 |
20140045017 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - In a prismatic nonaqueous electrolyte secondary battery according to an embodiment of the invention, a flat winding electrode assembly and a nonaqueous electrolyte are housed in a prismatic outer body. A positive electrode includes a positive electrode substrate exposed portion formed along the longitudinal direction. A negative electrode includes a negative electrode substrate exposed portion formed along the longitudinal direction. The nonaqueous electrolyte contains a lithium salt having an oxalate complex as an anion at the time of making the nonaqueous electrolyte secondary battery. The winding electrode assembly has a winding end of the negative electrode disposed on a further outer side than that of the positive electrode. The winding number of the positive electrode and the negative electrode are each 15 or more. | 02-13-2014 |
20140045018 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A nonaqueous electrolyte secondary battery according to an embodiment of the present invention includes an electrode assembly and a nonaqueous electrolyte. The electrode assembly is formed by winding a positive electrode, a negative electrode, and a separator. The negative electrode is opposed to the positive electrode. The separator is disposed between the positive electrode and the negative electrode. The capacity of the battery is not less than 4 Ah. The number of stacked layers of the positive electrode in a section that includes the center of the nonaqueous electrolyte secondary battery is not less than 50. The positive and negative electrode opposed capacity ratio is 1.1 to 1.4. The nonaqueous electrolyte contains lithium difluorophosphate. | 02-13-2014 |
20140045032 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A nonaqueous electrolyte secondary battery includes: a stacked electrode assembly formed by stacking a plurality of layers of a positive electrode plate and a plurality of layers of a negative electrode plate with a separator interposed therebetween; a nonaqueous electrolyte; and an aluminum laminated outer body that stores the stacked electrode assembly and into which the nonaqueous electrolyte is poured. The positive electrode plate contains a positive electrode active material. The negative electrode plate contains a negative electrode active material. The stacked electrode assembly includes an inorganic particle layer containing a binder and inorganic particles between the positive electrode plate and the separator or between the negative electrode plate and the separator, or both. The nonaqueous electrolyte is also prepared by adding LiPF | 02-13-2014 |
20140045034 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A nonaqueous electrolyte secondary battery includes: a stacked electrode assembly formed by stacking a plurality of layers of a positive electrode plate and a plurality of layers of a negative electrode plate with a separator interposed therebetween; a nonaqueous electrolyte formed by dissolving LiPF | 02-13-2014 |
20140045042 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A nonaqueous electrolyte secondary battery includes: a stacked electrode assembly formed by stacking a plurality of layers of a positive electrode plate and a plurality of layers of a negative electrode plate with a separator interposed therebetween; a nonaqueous electrolyte formed by dissolving LiPF | 02-13-2014 |
20140045043 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A nonaqueous electrolyte secondary battery according to an embodiment of the present invention includes an electrode assembly and a nonaqueous electrolyte. The electrode assembly includes a positive electrode, a negative electrode, and a separator. The negative electrode is opposed to the positive electrode. The separator is disposed between the positive electrode and the negative electrode. The capacity of the battery is not less than 21 Ah. The negative electrode is provided on the outer periphery side of the electrode assembly. The nonaqueous electrolyte contains lithium difluorophosphate. | 02-13-2014 |
20140045044 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A nonaqueous electrolyte secondary battery according to an embodiment of the present invention includes an electrode assembly, a nonaqueous electrolyte, and a container. The electrode assembly has a positive electrode, a negative electrode, and a separator. The positive electrode contains particles of a lithium transition metal compound as a positive electrode active material. The negative electrode is opposed to the positive electrode. The separator is disposed between the positive electrode and the negative electrode. The nonaqueous electrolyte contains lithium difluorophosphate. The container houses the electrode assembly and the nonaqueous electrolyte. The battery capacity is not less than 21 Ah. The mean particle diameter (D | 02-13-2014 |
20140045045 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A nonaqueous electrolyte secondary battery includes: a stacked electrode assembly formed by stacking a plurality of layers of a positive electrode plate and a plurality of layers of a negative electrode plate with a separator interposed therebetween; a nonaqueous electrolyte; and an aluminum laminated outer body that stores the stacked electrode assembly and into which the electrolyte is poured. The positive electrode plate contains a positive electrode active material. The negative electrode plate contains a negative electrode active material. The nonaqueous electrolyte contains LiBOB (lithium bis(oxalato)borate) and/or a boron-containing substance derived from the LiBOB. The aluminum laminated outer body has an outer surface area of 300 cm | 02-13-2014 |
20140045049 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A stacked electrode assembly is arranged inside an aluminum laminated outer body. At least one of a positive electrode terminal and a negative electrode terminal satisfies Formula (1) below. A nonaqueous electrolyte contains LiBOB and/or a boron-containing substance derived from LiBOB. The battery has a capacity of 10 Ah or larger. | 02-13-2014 |
20140045057 | NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - To provide with high productivity a non-aqueous electrolyte secondary battery having high capacity. | 02-13-2014 |
20140045077 | NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - To provide a high-capacity non-aqueous electrolyte secondary battery having superior cycle properties and safety. | 02-13-2014 |
20140080010 | NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - To provide with high productivity a non-aqueous electrolyte secondary battery having high capacity and superior low temperature characteristics. | 03-20-2014 |