Power supply apparatus

A power supply apparatus that supplies electric power to an electric outboard motor for a hull through a cable, the power supply apparatus comprising:

• a battery pack;
• a battery pack mount unit to or from which the battery pack is attached or detached;
• a battery pack controller that manages a state of the battery pack;
• and
• a battery pack case that has a box-shape structure and houses the battery pack, the battery pack mount unit, and the battery pack controller,
• wherein the battery pack case includes:
• a case body having an opening through which the battery pack is inserted or removed,
• a cover member that closes the opening of the case body so as to be liquid tight, a ventilation hole penetrating through one side surface of an outer wall of the case body,
• a filter apparatus provided in the ventilation hole that prohibits liquid to pass therethrough but allows gas to pass therethrough,
• an electric power take-out section formed in the one side surface and supplying the electric power from the battery pack to the electric outboard motor through the cable,
• a seal material having a liquid-tight function and provided to the electric power take-out section, a carrying handle including a pair of expandable and contractible tubular shaft portions that extends in a vertical direction of the battery pack case, is attached to the one side surface from outside, and is positioned at each of a expanded position and a contracted position, and including a handle section bridged between leading ends of the shaft portions, and
• wheels disposed in a lower corner portion of the one side surface to assist movement using the carrying handle, and
• wherein a gap is provided between the battery pack case and the battery pack, and the ventilation hole is formed in each of an upper portion and a lower portion of the one side surface so as to communicate with the gap, the upper portion being located on the upper side of the one side surface in a vertical direction and the lower portion being located on the lower side of the one side surface in the vertical direction, and
• wherein the ventilation hole formed in each of the upper portion and the lower portion of the one side surface and the electric power take-out section formed in the one side surface are formed in an area of the one side surface defined below the handle section in the contracted position and between the pair of shaft portions.