Vehicle side portion structure

A vehicle side portion structure, comprising:

• a battery case disposed at a lower side of a floor panel of a vehicle;
• and
• a lower hinge provided at a lower portion of a sliding door that opens and closes a side portion of the vehicle, the lower hinge configured to support the sliding door such that the sliding door is slidable in a vehicle longitudinal direction, and, in a state in which the sliding door is closed, at least an inner side portion in a vehicle left-right direction of the lower hinge being disposed at a position overlapping with the battery case as seen in a side view,
• wherein a concave portion is formed at a portion of the battery case that the inner side portion of the lower hinge faces in the vehicle left-right direction in the state in which the sliding door is closed, and the concave portion has a size such that at least a portion of the inner side portion of the lower hinge is insertable into the concave portion.