Secondary battery electrode notching apparatus

A method of notching a secondary battery electrode, the method comprising:

• supplying a secondary battery electrode including a composite portion coated with an electrode active material and an uncoated portion not coated with the electrode active material to a die portion of a notching apparatus;
• operating a composite portion stripper of the notching apparatus such that the composite portion stripper moves toward the die and presses the composite portion into close contact with the die;
• operating an uncoated portion stripper of the notching apparatus including an elastic pad formed of an elastic material such that the uncoated portion stripper moves toward the die, presses the uncoated portion into close contact with the die, and thereby elastically deforms the elastic pad while making surface contact with the uncoated portion;
• and
• operating a punch of the notching apparatus such that the punch moves toward the die and cuts the uncoated portion so that scraps for disposal are formed from the uncoated portion,
• wherein a thickness of the elastic pad becomes thinner the further away the elastic pad is from the composite portion stripper in a direction parallel to a width direction of the secondary battery electrode.

A secondary battery electrode notching apparatus, comprising:

• a die configured to support a secondary battery electrode including a composite portion coated with an electrode active material and an uncoated portion not coated with the electrode active material;
• a composite portion stripper configured to move toward the die and press the composite portion into close contact with the die;
• an uncoated portion stripper configured to move toward the die and press the uncoated portion into close contact with the die, the uncoated portion stripper including an elastic pad formed of an elastic material and configured to elastically deform to make surface contact with the uncoated portion;
• and
• a punch configured to move toward the die and cut the uncoated portion so that scrap for disposal is formed from the uncoated portion,
• wherein a thickness of the elastic pad becomes thinner the further away the elastic pad is from a center of the uncoated portion stripper in a direction parallel to a longitudinal direction of the secondary battery electrode.