Electrode active material coating device and method for coating electrode active materials

An electrode active material coating device comprising:

• a transfer unit configured to continuously transfer a substrate in a first direction;
• a coating die configured to form a coated portion by ejecting an electrode active material slurry on the substrate;
• and
• a guide unit including a guide portion that moves along the first direction when between the coating die and the substrate,
• wherein the guide portion includes a first guide portion that moves in correspondence with a start part of the coated portion and a second guide portion that moves in correspondence with an end part of the coated portion,
• wherein the first guide portion and the second guide portion block the electrode active material slurry from being coated on the substrate, and
• wherein the guide unit includes:
• a first circular frame connected to a first end of the guide portion, a second circular frame connected to a second end of the guide portion;
• wherein the first guide portion extends between a first point on the first circular frame and a first point on the second circular frame;
• wherein the second guide portion extends between a second point on the first circular frame and a second point on the second circular frame;
• a first bar frame on the first circular frame connected to diametrically opposed points on the first circular frame;
• a first bar frame on the second circular frame connected to diametrically opposed points on the second circular frame;
• and
• a central axle connecting a central part of the first circular frame and a central part of the second circular frame.