| Patent application number | Description | Published |
|---|
| 20090029259 | BATTERY - A battery of this invention includes: a separator which is folded in a zigzag manner, thereby forming a layered structure having at least one first-electrode holding part and at least one second-electrode holding part which are alternately aligned; a first electrode accommodated in the first-electrode holding part; and a second electrode accommodated in the second-electrode holding part. At least one of the first electrode and the second electrode has at least one protruding part. The first electrode is connected to a first terminal, and the second electrode is connected to second terminal. | 01-29-2009 |
| 20090053592 | BATTERY - A battery of the present invention has a strip-shaped electrode group. The electrode group includes a first electrode, a second electrode, and a separator interposed therebetween. The first electrode has a strip-shaped first current collector and a first active material layer carried on one surface thereof. The first active material layer faces the separator. The second electrode has a strip-shaped second current collector and a second active material layer carried on one surface thereof. The second active material layer faces the separator. The electrode group is folded in a zigzag pattern to form a laminate having a plurality of flat portions, at least one first bent portion located on a first end side of the plurality of flat portions in which the first current collector is located on the outermost side, and at least one second bent portion located on a second end side that is opposite to the first end side in which the second current collector is located on the outermost side. The laminate has a first terminal connected to the at least one first bent portion and a second terminal connected to the at least one second bent portion. | 02-26-2009 |
| 20090104528 | Electrode for Lithium Secondary Battery, Lithium Secondary Battery and Method for Producing the Same - An electrode for a lithium secondary battery including a sheet-like current collector and an active material layer carried on the current collector. The active material layer is capable of absorbing and desorbing lithium, and the active material layer includes a plurality of columnar particles having at least one bend. An angle θ | 04-23-2009 |
| 20090117462 | ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD FOR PRODUCING SAME, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY COMPRISING SUCH ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - An electrode for a non-aqueous electrolyte secondary battery | 05-07-2009 |
| 20090176158 | NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME - A negative electrode for a lithium secondary battery of the present invention includes a current collector and a negative electrode active material layer carried on the current collector. The negative electrode active material layer includes a plurality of columnar particles. The current collector has a surface including a depression and a plurality of projected regions defined by the depression. The projected regions carry the columnar particles. Further, the present invention relates to a lithium secondary battery using the foregoing negative electrode. According to the present invention, it is possible to provide a high-capacity negative electrode excellent mainly in cycle characteristics for a lithium secondary battery, and a lithium secondary battery including the same. | 07-09-2009 |
| 20090202906 | LITHIUM SECONDARY BATTERY - A negative electrode of a lithium secondary battery has a negative electrode active material including at least one element of silicon and tin. Capacities of the positive electrode and the negative electrode of the lithium secondary battery are set as follows. In a completely charged state of the lithium secondary battery charged by a predetermined charging method, the positive electrode active material and the negative electrode active material are in a first partially charged state, respectively. In a completely discharged state of the lithium secondary battery discharged by a predetermined discharging method, the negative electrode active material is in a second partially charged state. | 08-13-2009 |
| 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 |
| 20090311601 | NEGATIVE ELECTRODE AND LITHIUM ION SECONDARY BATTERY - In the negative electrode of the present invention, the negative electrode current collector includes a substrate and a plurality of protrusions, and the protrusions are formed on the surface of the substrate. The negative electrode active material layer includes a columnar active material layer and a stacked active material layer containing an alloy-based negative electrode active material. The columnar active material layer includes one or more columns that extend outwardly from the surface of the protrusions. The stacked active material layer is formed by stacking a thin film in a zigzag manner on the substrate surface between the protrusions. By using this negative electrode, negative electrode deformation, and separation of the negative electrode active material layer from the negative electrode current collector are suppressed, and a lithium ion secondary battery that has excellent charge and discharge cycle performance and output performance can be obtained. | 12-17-2009 |
| 20090317721 | NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A non-aqueous electrolyte secondary battery has at least negative electrode, a positive electrode, and a separator between the positive electrode and negative electrode. Negative electrode has columnar first negative electrode active materials that are discretely formed on the outer peripheral surface of negative electrode current collector in the winding direction and can reversibly insert and extract lithium ions, and columnar second negative electrode active materials discretely formed on the inner peripheral surface. The positive electrode has positive electrode mixture layers containing a positive electrode active material capable of reversibly inserting and extracting lithium ions, on both surfaces of a positive electrode current collector. The difference between the porosity generated between first negative electrode active materials in negative electrode and that generated between the second negative electrode active materials in winding is set within 1.1%. | 12-24-2009 |
| 20100075217 | LITHIUM ION SECONDARY BATTERY AND METHOD FOR PRODUCING THE SAME - A positive electrode, a separator, and a negative electrode including an alloy-type negative electrode active material are stacked in this order, to form an electrode unit. Such electrode units are stacked with a separator interposed between each pair of the electrode units, to form a stacked electrode assembly. The stacked electrode assembly is fabricated, and the stacked electrode assembly is pressed during an initial charge and an initial discharge. As a result, a rate of increase of the thickness of the stacked electrode assembly due to a predetermined number of charge and discharge cycles becomes equal to or less than 10%. It is thus possible to obtain a lithium ion secondary battery having high capacity and high output, capable of maintaining battery performance such as charge/discharge cycle characteristics at a high level for a long time, and having long service life. | 03-25-2010 |
| 20100099029 | LITHIUM ION SECONDARY BATTERY - Disclosed is a lithium ion secondary battery including: a positive electrode including a positive electrode active material layer containing a positive electrode active material, and a positive electrode current collector; a negative electrode including a thin film negative electrode active material layer containing an alloy-based negative electrode active material, and a negative electrode current collector; a separator interposed between the positive electrode and the negative electrode; and an ion-permeable resin layer formed on a surface of the thin film negative electrode active material layer. In this lithium ion secondary battery, despite the use of the alloy-based negative electrode active material, the deterioration in battery performance such as cycle characteristics and output characteristics is prevented. | 04-22-2010 |
| 20100119948 | NEGATIVE ELECTRODE FOR LITHIUM SECONDARY CELL, LITHIUM SECONDARY CELL USING THE SAME, AND METHOD FOR MANUFACTURING NEGATIVE ELECTRODE FOR LITHIUM SECONDARY CELL - A negative electrode for a lithium secondary battery according to the present invention includes a current collector | 05-13-2010 |
| 20100129711 | NEGATIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD FOR PRODUCING THE SAME, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - This invention provides a negative electrode and a non-aqueous electrolyte secondary battery including the negative electrode. The negative electrode includes a Li-absorbing element as a negative electrode active material, is free from deformation, separation of the negative electrode active material layer from the negative electrode current collector, and deposition of lithium on the negative electrode current collector, and is excellent in cycle characteristic, large-current discharge characteristic, and low-temperature discharge characteristic. | 05-27-2010 |
| 20100151320 | NEGATIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD FOR MANUFACTURING THE SAME, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY USING THE SAME - A negative electrode for nonaqueous electrolyte secondary battery capable of reversible occlusion and release of lithium ions, comprising current collector ( | 06-17-2010 |
| 20100151330 | NEGATIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD OF MANUFACTURING THE SAME, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY USING THE SAME - A negative electrode for a non-aqueous electrolyte secondary battery, which reversibly inserts/extracts lithium ions includes a current collector ( | 06-17-2010 |
| 20100156351 | DETERIORATION DETECTING METHOD AND DETERIORATION SUPPRESSING METHOD FOR RECHARGEABLE LITHIUM BATTERIES, DETERIORATION DETECTOR, DETERIORATION SUPPRESSOR, BATTERY PACK, AND CHARGER - According to a deterioration detecting method for rechargeable lithium batteries, battery voltages of a rechargeable lithium battery before and after the completion of charging or discharging are measured. An evaluation value is calculated based on the measured battery voltages. This evaluation value is compared with a reference value of the rechargeable lithium battery stored in advance. A deterioration level of the rechargeable lithium battery is estimated based on this comparison result. In addition, further deterioration can be suppressed by controlling charging and discharging of the rechargeable lithium battery based on the estimated deterioration level. | 06-24-2010 |
| 20100190060 | ELECTRODE FOR ELECTROCHEMICAL ELEMENT, ITS MANUFACTURING METHOD, AND ELECTROCHEMICAL ELEMENT USING THE SAME - Having a current collector having a concave portion and a convex portion at least on one side, and a columnar body formed on the convex portion of the current collector, the columnar body contains an active material for inserting and extracting lithium ions bonding at least with oxygen, and the oxygen content ratio of the active material of the columnar body becomes smaller as going away from the interface of the current collector. | 07-29-2010 |
| 20100203387 | ELECTRODE FOR LITHIUM RECHARGEABLE BATTERY AND LITHIUM RECHARGEABLE BATTERY COMPRISING THE ELECTRODE - An electrode for a lithium secondary battery | 08-12-2010 |
| 20100247990 | BATTERY PACK - A battery pack | 09-30-2010 |
| 20100264929 | LIFETIME ESTIMATING METHOD AND DETERIORATION SUPPRESSING METHOD FOR RECHARGEABLE LITHIUM BATTERY, LIFETIME ESTIMATING APPARATUS, DETERIORATION SUPPRESSOR, AND BATTERY PACK AND CHARGER USING THE SAME - In a lifetime estimating method for a rechargeable lithium battery, the open circuit voltages of the rechargeable lithium battery after discharging for at least two different charge/discharge cycle numbers are detected while charge/discharge cycles go on. Next, at least the two of the voltage values are plotted for respective cycle numbers, and a circular arc passing the plotted points is drawn. Furthermore, the lifetime of the rechargeable lithium battery is estimated based on a size of the circular arc. The progression of deterioration can be suppressed by controlling the charge and discharge of the rechargeable lithium battery based on the lifetime estimation. | 10-21-2010 |
| 20100285367 | NEGATIVE ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD FOR PRODUCING THE SAME, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A negative electrode active material for a non-aqueous electrolyte secondary battery includes an element capable of forming an intermetallic compound with lithium. The negative electrode active material has a water content of 0 to 0.04 molecule per atom of the element. The non-aqueous electrolyte secondary battery includes a negative electrode including the negative electrode active material, a positive electrode, a separator separating the negative electrode and the positive electrode, and a non-aqueous electrolyte. | 11-11-2010 |
| 20100285368 | LITHIUM ION BATTERY - A lithium ion battery includes: a positive electrode; a negative electrode that includes a negative electrode active material layer that contains an alloy-formable active material; an ion permeable insulating layer that is interposed between the positive electrode and the negative electrode; and an ion conductive polymer layer that is interposed between the negative electrode and the ion permeable insulating layer, in which the ion conductive polymer layer is configured to include a negative electrode-side portion and an ion permeable insulating layer-side portion that have different compositions, and the ion permeable insulating layer-side portion is configured to have higher ion conductivity than the negative electrode-side portion. With such a lithium ion battery, charge/discharge cycle characteristics and rate characteristics can be improved. | 11-11-2010 |
| 20100291441 | NEGATIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD OF MANUFACTURING THE SAME, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY USING THE SAME - A negative electrode includes current collector in which concave portion and convex portion are formed at least one surface thereof, and columnar body which is formed by laminating n (n≧2) stages of columnar body portions which are formed on convex portion of current collector, and includes columnar body portions in which variation direction of content ratios of elements of odd-numbered stages of columnar body portions and that of even-numbered stages of columnar body portions are different from each other, and plural protruding bodies are provided on the surfaces of columnar body portions at the side in which intersection angles between central lines of obliquely erected directions of columnar body portions and a central line of a thickness direction of current collector, and space is provided in columnar body by protruding bodies of the laminated columnar body portions. | 11-18-2010 |
| 20100297339 | ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD FOR PRODUCING SAME, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY COMPRISING SUCH ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - An electrode for a non-aqueous electrolyte secondary battery | 11-25-2010 |
| 20110003208 | NEGATIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A negative electrode for a non-aqueous electrolyte secondary battery including: a current collector; and an active material layer including at least two alloy-based active materials selected from the group consisting of silicon, tin, a silicon oxide, and a tin oxide. The active material layer includes a first portion supported on a surface of the current collector, a second portion supported on a surface of the first portion, and a third portion supported on a surface of the second portion. The first portion includes the silicon oxide or the tin oxide, and the oxygen content in the silicon oxide or the tin oxide in the first portion decreases continuously or stepwise as approaching the second portion. The second portion includes silicon or tin. The third portion includes the silicon oxide or the tin oxide, and the oxygen content in the silicon oxide or the tin oxide in the third portion increases continuously or stepwise with distance from the second portion. | 01-06-2011 |
| 20110008673 | NEGATIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - In a non-aqueous electrolyte secondary battery | 01-13-2011 |
| 20110027650 | NEGATIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - Provided are a negative electrode | 02-03-2011 |
| 20110033735 | BATTERY PACK - A battery pack | 02-10-2011 |
| 20110070492 | ELECTRODE FOR A LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY EQUIPPED WITH SAME - A method for producing an electrode for a lithium secondary battery according to the present invention includes (A) a step of causing a vaporized vapor deposition material to be incident on a surface of a current collector | 03-24-2011 |
| 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 |
| 20110143195 | NEGATIVE ELECTRODE FOR LITHIUM ION BATTERY, METHOD FOR PRODUCING THE SAME, AND LITHIUM ION BATTERY - A negative electrode | 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 |
