Battery module, battery pack having the same, and manufacturing method of battery module

A battery module comprising:

• a cell stack in which a plurality of battery cells are stacked;
• a busbar assembly including at least one busbar electrically connected to the plurality of battery cells, and a busbar support member disposed between the at least one busbar and the cell stack to support the at least one busbar;
• and
• a housing having a plurality of accommodation spaces partitioned by a partition member, to accommodate the cell stack,
• wherein the cell stack includes a first stack disposed in a first accommodation space located on a first side of the partition member, and a second stack disposed in a second accommodation space located on a second side of the partition member;
• the busbar assembly includes a first assembly electrically connected to the first stack, and a second assembly electrically connected to the second stack and structured to be separate from the first assembly;
• the first assembly and the second assembly are electrically connected to at least one of both ends of the plurality of accommodation spaces,
• the first assembly includes a first busbar support member including a first connection portion to be connected to the partition member,
• the second assembly includes a second busbar support member including a second connection portion to be connected to the partition member and structured to be separate from the first busbar support member,
• the first assembly is fastened to the partition member through the first connection portion and the second assembly is fastened to the partition member through the second connection portion,
• wherein the first connection portion and the second connection portion are arranged to oppose each other, and
• wherein the first connection portion and the second connection portion have concave-convex shapes in directions opposite to each other.