SECONDARY BATTERY MANUFACTURING METHOD COMPRISING DIVISIONAL INJECTION OF ELECTROLYTE

The present invention relates to a secondary battery manufacturing method, and the manufacturing method of the secondary battery injects large amount of electrolyte twice, and reflects the average value of the amount of firstly injected electrolyte onto the amount of secondly injected electrolyte so that allows electrolyte to be quantitatively injected in a short time. This can not only greatly reduce the defect rate when manufacturing batteries such as a large-capacity secondary battery or a long cell model secondary battery in which electrolyte 200g or more is injected, but it can also better improve the performance of the secondary battery.