Panel Assembly, Battery Cell Block Comprising Same, Battery Module And Battery Pack

Abstract: A panel assembly of the present invention is provided on a battery cell stack, in which a plurality of battery cells are stacked, so as to absorb swelling pressure of the battery cells, and comprises: a first panel which has at least one first protrusion protruding in the thickness direction of the battery cells, and which is connected to the bottom of the first protrusion so as to encompass the first protrusion; and a second panel which has at least one first through hole, and which is disposed to face the first panel, wherein opposing inner surfaces of the first panel and the second panel are coupled to each other while the first protrusion is inserted into the first through hole such that the front end of the first protrusion protrudes through the first through hole, and, when the front end of the first protrusion is pressed by the swelling pressure of the battery cells, the first protrusion is elastically displaced in the opposite direction of protrusion so that the swelling pressure can be absorbed. In addition, the present invention provides a battery cell block comprising the panel assembly, and a battery module comprising the battery cell block. In addition, the present invention provides a battery pack comprising the battery module.

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