Power Supply Apparatus, Vehicle Door Assembly, Vehicle, and Electronic Device

A vehicle door assembly, comprising:

• vehicle door glass;
• and
• a power supply apparatus comprising:
• a slide rail;
• a slider movably disposed on the slide rail and configured to fasten the vehicle door glass;
• a drag chain harness groove disposed parallel to the slide rail;
• and
• a drag chain harness disposed in the drag chain harness groove, wherein the drag chain harness comprises:
• a fastened end fastened to the drag chain harness groove and configured to electrically connect to a power supply;
• and
• a movable end configured to electrically connect to the vehicle door glass.

A vehicle, comprising:

• a power supply;
• a to-be-moved apparatus;
• and
• a power supply apparatus comprising:
• a slide rail;
• a slider movably disposed on the slide rail and configured to fasten the to-be-moved apparatus;
• a drag chain harness groove disposed parallel to the slide rail;
• and
• a drag chain harness disposed in the drag chain harness groove, wherein the drag chain harness comprises:
• a fastened end fastened to the drag chain harness groove and configured to electrically connect to the power supply;
• and
• a movable end configured to electrically connect to the to-be-moved apparatus.