Cooling member for battery module and battery module including same
Provided is a cooling member for a battery module. The cooling member for a battery module according to one embodiment of the present invention is a cooling member for a battery module having a cooling plate that contacts a plurality of battery cells to transfer heat emitted from the battery cells to the outside. The cooling member is implemented by including a predetermined pattern to accommodate at least a part of the outer surface of the battery cells on a main surface along the longitudinal direction thereof, and an insulating heat dissipation layer which covers a part or all of the outer surface of the cooling plate so as to be interposed between the battery cells to be accommodated on the predetermined pattern and the cooling plate.
1. A cooling member for a battery module having a cooling plate in contact with a plurality of battery cells to transfer heat emitted from the battery cells to the outside, the cooling member for a battery module, comprising:
a predetermined pattern formed to accommodate at least a portion of the outer surface of the battery cell on the main surface along the longitudinal direction;
wherein the predetermined pattern has a cross-section, wherein the cross-section comprises a plurality of a peaks and a plurality of valleys formed alternately;
an insulating heat dissipation layer having a thickness of 300 to 1,000 μm and a Shore OO hardness of 35 to 50 for covering at least a part of an outer surface of the cooling plate so as to be interposed between the battery cell to be accommodated on the predetermined pattern and the cooling plate, wherein the insulating heat dissipation layer is a coating layer, wherein the coating layer comprises an insulating heat dissipation filler dispersed within a silicone-based matrix, wherein the silicone-based matrix is cross-linked by addition polymerization of polydimethylsiloxane containing a vinyl group at the terminal; and
a silicone-based primer layer disposed between the coating layer and the cooling plate.
2. The cooling member for a battery module of claim 1 , wherein the pattern is formed by a cooling plate or an insulating heat dissipation layer.
3. The cooling member for a battery module of claim 1 , wherein the battery cell has a cylindrical shape.
4. The cooling member for a battery module of claim 1 , wherein the cooling plate has at least one moving passage through which a refrigerant flows therein.
5. The cooling member for a battery module of claim 1 , wherein the insulating heat dissipation layer has a withstand voltage of 5 kV/mm or more.
6. The cooling member for a battery module of claim 1 , wherein the cooling member further comprises an insulating member provided in close contact with the insulating heat dissipation layer.
7. A battery module comprising:
a cooling member for a battery module according to claim 1 ; and
a plurality of battery cells in which at least a portion of an outer surface of the pattern of the cooling member is accommodated.
8. An electric vehicle comprising a cooling member for a battery module according to claim 1 .