The present invention relates to a busbar assembly capable of implementing various circuit configurations for connecting electrode leads of a plurality of battery cells by using simple and unified parts. The busbar assembly according to an embodiment of the present invention can comprise: a frame; a plurality of sensing busbars integrally provided on the frame; an inter-busbar configured to connect any one pair of sensing busbars among the plurality of sensing busbars; and a terminal busbar configured to connect one of the plurality of sensing busbars to an external terminal.
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