| CPC H01M 50/3425 (2021.01) [H01M 50/211 (2021.01); H01M 50/367 (2021.01)] | 15 Claims |
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1. A battery pack, comprising:
a plurality of cell units including a plurality of secondary battery cells; and
a frame unit including an internal space accommodating the plurality of cell units, a side frame dividing the internal space and forming a plurality of compartments respectively accommodating at least one of the plurality of cell units, and a vent pipe portion configured to discharge flames or gas to outside of the internal space,
wherein the vent pipe portion includes:
a hollow space formed inside the vent pipe portion to provide a path for the flames or gas to discharge;
a first sidewall facing the plurality of compartments and including a plurality of first connection holes communicating with the hollow space and the plurality of compartments;
a second sidewall opposite to the first sidewall and including a plurality of second connection holes communicating with the hollow space and the outside of the internal space; and
a blocking plate disposed to traverse the hollow space at a position corresponding to a location between adjacent plurality of compartments, dividing the hollow space into a plurality of partitioned regions that are separated from each other,
wherein each of the plurality of compartments is in communication with a different region of the plurality of partitioned regions;
wherein at least one of the plurality of first connection holes and at least one of the plurality of second connection holes are disposed between a plurality of blocking plates and provided in each of the partitioned regions of the hollow space; and
wherein each of the plurality of first connection holes is disposed to overlap a respective one of the plurality of cell units.
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