MANUFACTURING METHOD OF SECONDARY BATTERY

PROBLEM TO BE SOLVED: To provide a manufacturing method of a secondary battery which can raise the battery characteristic. SOLUTION: A battery element, which is equipped with a positive electrode, a negative electrode, and an electrolyte, is enclosed inside of a film-like coating component to assemble a secondary battery 1. After that, the assembled secondary battery 1 is heated while applying hydrostatic pressure on it. By this, an electrolyte layer, the positive electrode, and the negative electrode can be uniformly stuck, and moreover the electrode active materials can be mutually stuck uniformly. In addition, after applying hydrostatic pressure, if one-axis pressurization is added, distortion of the secondary battery 1 produced by the hydrostatic pressure can be corrected. Then, adhesion nature with the electrolyte layer, the positive electrode, and the negative electrode and the adhesion nature of the mutual electrode active materials can be raised further, more.