MANUFACTURING METHOD OF SECONDARY BATTERY

To provide a manufacturing method of a secondary battery capable of impregnating the inside of an electrode body with an electrolyte more appropriately and in a short time.SOLUTION: A manufacturing method of a secondary battery includes a preparation step and an impregnation promotion step. In the p...

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1. Verfasser: NAKATAKE AKEMI
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:To provide a manufacturing method of a secondary battery capable of impregnating the inside of an electrode body with an electrolyte more appropriately and in a short time.SOLUTION: A manufacturing method of a secondary battery includes a preparation step and an impregnation promotion step. In the preparation step, a battery case, and a secondary battery stored in the battery case and comprising an electrode body and an electrolyte stored are prepared. In the impregnation promotion step, a charge/discharge cycle is executed iteratively 60 times or more with respect to the secondary battery prepared in the preparation step. As a result, the electrode body is alternately expanded and shrunk, and the impregnation of the inside of the electrode body with the electrolyte is promoted. Therefore, by executing the impregnation promotion step, the inside of the electrode body is impregnated with the electrolyte more appropriately and in a short time.SELECTED DRAWING: Figure 3 【課題】電解液をより適切に短時間で電極体の内部に含浸させることが可能な二次電池の製造方法を提供する。【解決手段】二次電池の製造方法には、準備工程および含浸促進工程が含まれる。準備工程では、電池ケースと、電池ケース内に収容された電極体および電解液とを有する二次電池が準備される。含浸促進工程では、準備工程において準備された二次電池に対して、充放電サイクルが60回以上繰り返し実行される。その結果、電極体の膨張および収縮が交互に発生し、電極体の内部への電解液の含浸が促進される。従って、含浸促進工程が実行されることで、電解液がより適切に短時間で電極体の内部に含浸される。【選択図】図3