(JP11073984-A)      NOVELTY - Electrode (1) is wound as a roll on a hollow cylindrical inner receptacle (2) and is axially placed inside an outer receptacle (4). Ring-shaped end face boards (5) are welded to close ends of the receptacles. The electrode terminals passing through the electrically insulated end face boards.    USE -   For lithium ion secondary battery used in electric vehicle.    ADVANTAGE -   Heat generated inside the battery is radiated efficiently through hollow inner cylindrical receptacle unit. The electrode is arranged insulated about the receptacle units without need for insulation cover and this eliminates inhibition of thermolysis by insulation cover. Air-tight leakage by elevation of internal pressure is minimized with the welding of end face plate to ends of both the receptacle units.    DESCRIPTION OF DRAWING - The diagram shows sectional view of secondary battery. (1) Electrode; (2) Inner receptacle unit; (4) Outer receptacle unit; (5) End face board.    (EP887876-B1)      Rolled electrodes and separators are enclosed in a battery container comprising a cylindrical inner portion (2) and a cylindrical outer portion (4) with ring-shaped end plates (5). During manufacture, electrolyte solution is injected via a hole in an end plate and the hole is sealed subsequently.    In one example, 100 cells are connected in series to provide about 300V for an electric motor in an electric powered vehicle.    ADVANTAGE -   Internal pressure and electrolyte leakage are avoided and heat developed in the cells is readily dissipated as insulating covers are not required.    (US6114059-A)      Rolled electrodes and separators are enclosed in a battery container comprising a cylindrical inner portion (2) and a cylindrical outer portion (4) with ring-shaped end plates (5). During manufacture, electrolyte solution is injected via a hole in an end plate and the hole is sealed subsequently.    In one example, 100 cells are connected in series to provide about 300V for an electric motor in an electric powered vehicle.    ADVANTAGE -   Internal pressure and electrolyte leakage are avoided and heat developed in the cells is readily dissipated as insulating covers are not required.