| 摘要 |
PURPOSE:To lower current collecting resistance by joining the U shape bottom section of a plate in an U shape to a side conductive current collector. CONSTITUTION:A negative plate 6 mainly composed of carbon, and a positive plate 8 mainly composed of lithium cobalt oxide are separately formed into an U shape. These plates 6 and 8 are combined with each other while a microporous separator 9 made of polypropylene is being held in between, the U shape bottom section of the plate 8 is welded to the welding section 81 of a positive electrode side conductive current collector 5, and the U shape bottom section of the plate 6 is also welded to the welding section 61 of a negative electrode side conductive current collector 9. The current collector 5 is insulated by an insulating plate 4, and is welded to the positive electrode 21 at a positive electrode welding section 52. The current collector 9 is welded so as to be fixed to a battery jar 1 concurrently acting as the terminal of the negative electrode at a welding section 10. By this constitution, internal resistance can be reduced, so that the battery capable of being charged/discharged under large current, can thereby be obtained. |
