Disclosed herein relates to an electrode sheet drying device including a guide roller having a plurality of perforated holes formed on the outer circumferential surface, and the guide roller is configured to vacuum cling an electrode sheet to prevent an electrode sheet from being lifted from the guide roller during a drying process, thereby having an effect of mitigating the occurrence of creases in a non-coated part and preventing lifting of a current collector and the occurrence of cracks.

An infrared heat source module is configured to minimize problems such as wrinkles or cracks in electrodes even if the patterns of a coated part and an uncoated part of the electrodes present in a current collector vary. The module improves a drying efficiency of the coated part of the current collector. An electrode using the infrared heat source module is manufactured by a process.

A drying device includes an automatically adjustable shield film, a shielding region which can be automatically set according to the extent that a shield film part opens and closes an opening, a time loss of shield film replacement can be reduced, and drying defects due to improper installation of the shield film can be improved.

The present invention relates to an electrode sheet drying apparatus capable of preventing thermal wrinkles in a non-coated portion, and more particularly to an electrode sheet drying apparatus for drying an electrode sheet including a pair of coated portions each having an electrode active material applied to one surface of metal foil and a non-coated portion located between the pair of coated portions, the apparatus including a chamber configured to dry the electrode sheet therein, a heater provided at an upper part of the chamber, the heater being configured to adjust the temperature in the chamber to a temperature necessary to dry the electrode sheet, and at least one guide roll configured to guide movement of the electrode sheet in the chamber and to maintain tension of the electrode sheet, wherein a part of the electrode sheet is moved in a state of being spaced apart from the guide roll.

An electrode sheet drying apparatus includes a drying structure including a transfer path through which an electrode sheet is transferred, and a plurality of rod-type lamps arranged parallel to each other along the transfer path and configured to radiate electromagnetic waves of a certain wavelength band to the electrode sheet transferred through the transfer path. The plurality of rod-type lamps include a first rod-type lamp having a length sufficient to cover both edge portions of the electrode sheet in a width direction and a central portion between the both edge portions, and a second rod-type lamp having a length less than the length of the first rod-type lamp and sufficient to cover only the central portion of the electrode sheet. An electrode manufacturing system using the same is also provided.

A system for drying a battery electrode coating includes two laser diode arrays and a laser module. Each laser diode array emits multi-beam laser radiation to an edge region including a respective edge of a coating lane deposited on a metal foil. The laser module emits a diverging laser beam to an interior area of the coating lane between the two edges. The intensity distribution of the diverging laser beam at the coating lane spans a gap in the widthwise dimension between respective intensity distributions of the multi-beam laser radiation from the two laser diode arrays. The use of laser diode arrays to perform the edge drying allows for tailoring the intensity distribution of the combined laser irradiation to dry the coating lane without over-drying and delaminating the edges. The use of a single, diverging laser beam in the interior area allows for optimizing affordability and energy efficiency.

A negative electrode manufacturing device for lithium secondary battery that is capable of simultaneously performing crystal surface orientation and pre-drying of a carbon-based negative electrode active material at an edge end of a negative electrode slurry is provided. The negative electrode manufacturing device provides a drying part using light at an edge of a magnetic part that aligns the crystal surface of the carbon-based negative electrode active material. A negative electrode manufactured by the device has a high orientation of the crystal surface of the carbon-based negative electrode active material contained in a sliding region of the negative electrode active layer, and high uniformity of orientation between the sliding region and a flat region of the negative electrode active material.