System and method for manufacturing secondary battery

Abstract

The present invention provides a system for manufacturing a secondary battery, and the system comprises a positive electrode cell manufacturing line for sequentially manufacturing a positive electrodesingle cell obtained by processing a tab at one end of a positive electrode and bonding a separator to one surface thereof; a negative electrode cell manufacturing line for sequentially manufacturinga negative electrode single cell obtained by processing a tab at one end of a negative electrode and bonding a separator to one surface thereof; and a stacking portion for alternately receiving the positive electrode single cell and the negative electrode single cell transferred from the positive electrode cell manufacturing line and the negative electrode cell manufacturing line and stacking thesame, as a stack cell, up to a predetermined layer.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from Korean Patent Application No. 10-2017-0179347 filed on December 26, 2017, the entire contents of which are hereby incorporated by reference. technical field [0003] The present invention relates to a system and method for manufacturing secondary batteries, and more particularly, to a method for manufacturing secondary batteries in a continuous process from the processing of electrode substrates (positive electrode substrates and negative electrode substrates) to packaging. Systems and methods for manufacturing secondary batteries. Background technique [0004] Demand for secondary batteries as energy sources is rapidly increasing in various fields including the fields of personal portable terminals and electric vehicles. [0005] Unlike primary batteries, rechargeable secondary batteries are being developed not only for digital devices but also for vehicles such as electric vehic...

AI Technical Summary

Problems solved by technology

First, in the case where a defect occurs when a unit cell b provided as a full cell or a bicell is manufactured or when the unit cell b is mounted on a folded separator a, it may occur in the entire electrode assembly manufactured by folding the folded separator a Defects thereby increasing waste loss

Also, it may be difficult to grasp the position of the unit cell b disposed in the center and whether the unit cell b is folded when the folding separator is folded

Therefore, there may be flaws

In addition, when the unit cell b is placed on the folded separator a, the completed electrode separator may be distorted due to the initial slight error

In addition, since the unit cell b sits on the separator a after being delivered in a semi-finished state, the process may be delayed during delivery

In the case of providing the unit cell as a dual battery, there may be disadvantages in terms of inventory management, as the dual cells need to be matched

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