Disclosed herein is a mandrel configured to be used in a winding process for manufacturing a jelly roll type electrode assembly using a long sheet type stack of a cathode/separator/anode structure, wherein the mandrel is oval in a section perpendicular to ...

An electrode assembly (30) is formed by combining a positive electrode plate (14), a separator (15), and a negative electrode plate (18), and the electrode assembly (30) was wound. An insulating member (21) having a hollow portion (22) is placed on the pos...

Provided are a method for manufacturing a cell that does not require a deformation process by pressing to provide a cell that is inexpensive and has high strength, and a method and apparatus for manufacturing a core. The method for manufacturing a cell inc...

A secondary battery and a method of manufacturing the secondary battery. A secondary battery includes an electrode assembly formed through winding a positive electrode plate including a positive electrode uncoated portion, a negative electrode plate includ...

A wound electrode assembly 12 includes a columnar conductive winding core 14, a negative electrode sheet 15, a positive electrode sheet 16, a separator 17 interposed between the negative electrode sheet 15 and the positive electrode sheet 16, and a conduct...

A secondary battery manufacturing apparatus according to this invention includes mechanisms for delivering a positive electrode sheet and a negative electrode sheet, a first coating mechanism and a second coating mechanism for applying electrolyte-containi...

A positive electrode plate (8), a negative electrode plate (4), and a separator (7) respectively having lengths required for constituting one spiral electrode group (103) are mounted on individual mount jigs (30, 32, 28) for pulling out or for winding, the...

First, a positive electrode plate and a negative electrode plate, each having a flat-plate shape, are wound with a separator is sandwiched between the electrode plates, while being pressed in a diametral direction by means of a pair of winding rolls (6), t...

To provide a method of manufacturing a battery capable of enhancing productivity and preventing deterioration of the battery performance. After attaching a positive electrode terminal to a belt-shaped electrode, electrolyte layers are formed. This can decr...