| 摘要 |
PURPOSE: Disclosed is a battery minimized in deformation by charge and discharge, having less possibility of deformation or breakage of the battery, even if the internal pressure is raised, superior in stability and particularly suitable for a thin lightweight one by including at least one preliminary charging process for performing a charging, while applying pressure. CONSTITUTION: In preliminary charging process, pressurization is performed by putting a battery between two opposed plates and applying a pressure from both sides thereof, and the pressure is preferably applied to the plates nipping the battery via an elastic body. Otherwise, in the preliminary charging process, the pressurizing is performed by utilizing hydrostatic pressure, and the battery before preliminary charging is suitably put in an insulating liquid followed by pressurization. The pressure applied in the preliminary charging process is preferably 0.05 MPa or higher. A battery (prior to charging) with a generating element trimmed with an exterior film(7) is put between two opposed plates(8), and an external extraction electrode is charged at a fixed current and a fixed voltage, while applying a pressure to the plates(8) via a spring(9). |
