Punching oil coater and notching apparatus including the same

A notching apparatus for secondary battery manufacturing, the notching apparatus comprising:

• feed rollers configured to:
• contact an electrode plate having a surface including a coated portion that is coated with an electrode active material and a pair of uncoated portions that are not coated with the electrode active material, and
• convey the electrode plate by rotation;
• a punching oil coater configured to coat the pair of uncoated portions of mutually symmetrical surfaces of the electrode plate together with punching oil;
• a die having an opening corresponding to a set punch shape and to support the electrode plate coated with the punching oil;
• and
• a press configured to punch the pair of uncoated portions corresponding to the punch shape to form an electrode tab connected to the coated portion,
• wherein the punching oil coater includes:
• a coating device configured to:
• correspond to the feed rollers that contact the electrode plate and move the electrode plate and are at different positions from each other, and
• rotate to contact and coat the pair of uncoated portions of mutually symmetrical surfaces of the electrode plate with punching oil as the feed rollers press the pair of uncoated portions against the coating device and move the electrode plate;
• a sprayer configured to spray the punching oil onto the coating device;
• a punching oil supply device configured to uniformly control a flow amount and flow rate of the punching oil supplied to the sprayer;
• and
• a coating controller configured to control a punching oil coating operation for the electrode plate.