Electrode tab alignment mechanism and X-ray inspection apparatus comprising same for inspecting cylindrical secondary battery

An X-ray inspection apparatus for a cylindrical secondary battery, said X-ray inspection apparatus comprising:

• an inspection chamber;
• a transfer unit for transferring the cylindrical secondary battery into the inspection chamber;
• a rotational inspection body that rotates with the secondary battery held thereon;
• an X-ray source;
• an X-ray detector;
• and
• a discharge unit for discharging an inspected secondary battery to outside of the inspection chamber;
• wherein the X-ray inspection apparatus further comprising an alignment mechanism arranged along a rotation path of the rotational inspection body to align the cylindrical secondary battery;
• wherein the alignment mechanism includes at least one sensing unit for detecting a position of a specific portion of the cylindrical secondary battery, and at least one contact unit operable between a standby position incapable of contacting with the secondary battery and a contact position capable of contacting with the secondary battery;
• and
• wherein the at least one contact unit is configured to be operated based on a detection result of the at least one sensing unit, and when the at least one contact unit is operated to the contact position, the secondary battery is turned by a contact frictional force generated between the secondary battery and the at least one contact unit while the secondary battery continues to rotate with the rotational inspection body.