Integrated battery case

An integrated battery case comprising:

• an intermediate panel provided under a plurality of battery cells and configured to cool the battery cells;
• a cooling channel member provided under the intermediate panel and including channels formed in an internal space of the cooling channel member;
• and
• a lower cover provided under the cooling channel member, including a composite material-based double layer to protect the battery case when a collision occurs in a lower portion of a vehicle, and integrally connected to the intermediate panel and the cooling channel member by a plurality of mounting portions and a through portion,
• wherein the double layer includes a composite material including long fiber and continuous fiber, the long fiber is disposed outside the battery case, the continuous fiber is disposed inside the battery case, and the long fiber is thicker than the continuous fiber,
• wherein an engraved portion of the lower cover meshes with an embossed portion of the cooling channel member to form a load path from the lower cover through the cooling channel member to the intermediate panel when the collision occurs in the lower portion of the vehicle,
• wherein the integrated battery case further includes a reinforcing rib that forms a reinforcing structure for connecting the plurality of mounting portions and the through portion to support the lower cover,
• wherein the reinforcing rib is formed by the engraved portion of the lower cover and the embossed portion of the cooling channel member, and
• wherein the reinforcing rib includes a continuous fiber.