Battery pack structure including cooling duct outside pack case connected to chamber inside pack case by connector and first and second sealing members

An battery pack structure comprising:

• a battery module including a plurality of battery cells;
• a pack case in which a plurality of the battery modules are housed;
• a plurality of chambers that serves as an air flow passage to each one of the plurality of the battery modules inside the pack case;
• a cooling duct that is arranged outside the pack case and serves as a second air flow passage;
• and
• a plurality of connectors that connects the cooling duct and the pack case with each other, the plurality of the connectors communicating the plurality of chambers and the cooling duct with each other,
• wherein the cooling duct is connected to the plurality of the connectors,
• wherein each of the plurality of connectors includes a first opening, a second opening, a first sealing surface, and a second sealing surface,
• wherein for each of the plurality of connectors:
• the first opening is connected with an inlet part of a respective one of the plurality of chambers in a state of being sealed by a first sealing member,
• the second opening is connected with an outlet part of the cooling duct in a state of being sealed by a second sealing member,
• the first sealing surface is formed in a peripheral part of the first opening, the first sealing surface facing a chamber inlet surface through the first sealing member, the first sealing surface formed in a shape of a tube or a plane, the chamber inlet surface being formed in a peripheral part of the inlet part, and the chamber inlet surface formed in a same shape of the tube or the plane as the first sealing surface, and
• the second sealing surface is formed in a peripheral part of the second opening, the second sealing surface facing a duct outlet surface through the second sealing member, the second sealing surface formed in a shape of a tube or a plane, the duct outlet surface being formed in a peripheral part of the outlet part, and the duct outlet surface formed in a same shape of the tube or the plane as the second sealing surface.