The present invention relates to an apparatus for evaluating drying quality of an electrode, and the apparatus includes: an oven configured to provide a space in which an electrode is dried; a measuring unit configured to be positioned at an outlet of the oven and measure a color coordinate value of an electrode active material layer with respect to the dried electrode; and an determination unit configured to determine whether the electrode is dry from the color coordinate value, wherein the determination unit sets a reference value, and determines that a dry state of the electrode is defective if the measured color coordinate value is less than the reference value, and a difference between the measured color coordinate value and the reference value is more than a preset value.

A system for drying an electrode includes a drying unit which dries an electrode which is moving on a transfer line; a thermal imaging camera which photographs a surface of the electrode in real time; a calculation unit which stores an image taken by the thermal imaging camera, and generates temperature distribution data in a width direction of the electrode from the image; and an output unit which outputs the image and the temperature distribution data in a width direction of the electrode.

A system for drying an electrode includes: an oven which applies hot air and radiant heat to an electrode sheet; and a controller which receives information on drying standby time, and controls an amount of heat supplied into the oven. Herein, the controller controls to supply a reduced amount of heat to the oven during an initial drying time right after the supply of the electrode sheet after the drying standby time.

A system for automatically controlling an electrode drying includes: an oven which provides a space where an electrode sheet is moved and dried, includes a dryer which applies hot air and/or radiant heat to the electrode sheet, and is divided into a plurality of drying sections; a measuring unit which collects information on a dried amount of the electrode sheet and transmits the collected information to a controller; and the controller which determines a dried level of the electrode sheet based on the information on the dried amount received from the measuring unit, and control a drying intensity of the oven according to the determined dried level. Herein, the controller independently controls the plurality of drying sections.

An apparatus for drying an electrode plate includes a drying furnace configure to dry an electrode plate having a slurry coated thereon, an over-heated steam supplier configured to supply the drying furnace with over-heated steam as a drying heat source, a circulation fan configured to inhale at least some of the over-heated steam discharged from the drying furnace and to introduce the inhaled over-heated steam back into the drying furnace, an exhaust fan configured to inhale at least some of the gas exhausted from the drying furnace, and a heat exchanger configured to exchange heat of the exhaust gas supplied from the exhaust fan.

An electrode sheet drying apparatus includes a plurality of hot air blowers each having a nozzle. The nozzle has a first hot air guide having a first guide surface, a second hot air guide having a second guide surface. The nozzle is configured to blow band hot air toward an obliquely upstream side. An angle formed between the first guide surface and an undried active material layer is set to an angle at which the band hot air travels toward an upstream side along the undried active material layer over a distance longer than or equal to 15 times as large as a gap from a first upstream-side edge to the undried active material layer even without a spread prevention part.

The present invention provides a conveyor belt tracking system for a dryer having a web of a mesh material having a protrusion extending along the length proximal one lateral edge and above a flat surface and a first generally cylindrical roller having a three-tiered slot for receiving the protrusion and two flanking shallow tracks for receiving base flanges.

The present invention provides a conveyor belt tracking system for a dryer having a web of a mesh material having a protrusion extending along the length proximal one lateral edge and above a flat surface and a first generally cylindrical roller having a three-tiered slot for receiving the protrusion and two flanking shallow tracks for receiving base flanges.

The present invention provides a conveyor belt tracking system for a dryer having a web of a mesh material having a protrusion extending along the length proximal one lateral edge and above a flat surface and a first generally cylindrical roller having a three-tiered slot for receiving the protrusion and two flanking shallow tracks for receiving base flanges.

A manufacturing method for a functional film provided on an upper surface of a long substrate, includes coating an ink containing a material of the functional film on the upper surface of the substrate to form a coating film, and drying the coating film while conveying the substrate. The drying process includes a first process in which the substrate is conveyed for a first distance and a temperature of the substrate is raised from a first temperature to a second temperature during conveyance. In the first process, assuming that the first distance is d.sub.1 (m), the first temperature is T.sub.1 (° C.), and the second temperature is T.sub.2 (° C.), the following expression is satisfied: (T.sub.2−T.sub.1)/d.sub.1≥10 (1a). A maximum value of an instantaneous temperature change rate of the substrate is 5° C./sec or less.