| Patent application number | Description | Published |
|---|
| 20100081042 | SECONDARY BATTERY - An electrode body of a secondary battery is formed by superimposing a positive electrode and a negative electrode upon each other with a belt-shaped separator interposed between the electrodes, and rolling up the positive and negative electrodes and the separator into a spiral shape. At least one side edge of a positive electrode current collector of the positive electrode in the longitudinal direction thereof includes a plurality of step parts discontinuously formed in the longitudinal direction at unequal intervals, and extends at both sides of each step part with a deviation of 0.2 mm or more. At least one side edge of a negative electrode current collector of the negative electrode in the longitudinal direction thereof includes a plurality of step parts discontinuously formed in the longitudinal direction at unequal intervals, and extends on both sides of each step part with a deviation of 0.2 mm or more. | 04-01-2010 |
| 20100081052 | NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, ELECTRODE USED FOR SECONDARY BATTERY, AND METHOD OF MANUFACTURING ELECTRODE - A non-aqueous electrolyte secondary battery includes an electrode body including a positive electrode and a negative electrode superimposed upon each other with a separator interposed therebetween. The negative electrode is superimposed upon the positive electrode in a state where a negative electrode active material layer, except the part on a proximal end part of a negative electrode tab, is positioned inside an outer edge of a positive electrode active material layer of the positive electrode. A width H | 04-01-2010 |
| 20100124694 | NONAQUEOUS ELECTROLYTE BATTERY, CUTTER AND METHOD OF MANUFACTURING ELECTRODE - A nonaqueous electrolyte battery includes a case, an electrode group, positive electrode tabs and negative electrode tabs. The electrode group comprises a positive electrode, a negative electrode and a separator. The positive electrode, the negative electrode and the separator are spirally coiled in a flat form. The positive electrode tabs are electrically connected to at least two positions among tab positions P | 05-20-2010 |
