A battery module including a plurality of battery cells and a cover, each battery cell having a vent portion aligned in one direction, and the cover being over the vent portions, the cover including an internal cavity and at least a portion of the internal cavity including a heat-resistance member.
1. A battery module, comprising:
a plurality of battery cells aligned in one direction, each battery cell having a vent portion; and
a cover over the vent portions of the battery cells, the cover including:
an internal cavity, at least a portion of the internal cavity including a heat-resistance member, and
at least one rib including non-contact portions on a surface thereof facing and covering the vent portions.
2. The battery module as claimed in claim 1 , further comprising an insulation member interposed between the vent portions and the cover.
3. The battery module as claimed in claim 1 , wherein:
the cover is mounted on the battery cells,
the cover has a hexahedral shape defining the internal cavity, the hexahedral shape having one side open, and
the open side faces the vent portions.
4. The battery module as claimed in claim 3 , wherein the heat-resistance member covers the entire internal cavity of the cover.
5. The battery module as claimed in claim 3 , wherein the heat-resistance member is only on portions of the internal cavity of the cover corresponding in position to the vent portions.
6. The battery module as claimed in claim 3 , wherein the at least one rib extends along a length of the cover in a length direction.
7. The battery module as claimed in claim 6 , wherein the at least one rib includes contact portions adjacent to the non-contact portions, the contact portions contacting and pressing against an insulation member, and the non-contact portions vertically aligned with the vent portions.
8. The battery module as claimed in claim 7 , wherein the heat resistance member is on outer surfaces of the at least one rib and an entire inner surface of the internal cavity.
9. The battery module as claimed in claim 7 , wherein the heat-resistance member is only on the non-contact portion.
10. The battery module as claimed in claim 1 , wherein the heat-resistance member is configured to withstand a high temperature of about 100° C. to about 700° C. and is at least one of a heat-resistance tape, an insulation coated metal plate, and a heat-resistance paint.
11. The battery module as claimed in claim 1 , further comprising an insulation member interposed between the vent portions and the cover, the insulation member being a single unit.
12. The battery module as claimed in claim 1 , further comprising an insulation member interposed between the vent portions and the cover, the insulation member including a plurality of openings corresponding in position to the vent portions.
13. The battery module as claimed in claim 12 , wherein a size of an opening of the insulation member is the same as or larger than a size of a corresponding vent portion.
14. The battery module as claimed in claim 1 , further comprising an insulation member interposed between the vent portions and the cover, the insulation member including a heat-resistance material.
15. The battery module as claimed in claim 1 , further comprising an insulation member interposed between the vent portions and the cover, the insulation member being a gasket.
16. The battery module as claimed in claim 1 , further comprising an insulation member interposed between the vent portions and the cover, the insulation member being wider than a width of the cover.
17. The battery module as claimed in claim 1 , further comprising an insulation member interposed between the vent portions and the cover, the cover including a flow path of gas exiting the insulation member, wherein the cover further comprises an outlet extending from one side of the cover.
18. The battery module as claimed in claim 1 , further comprising a housing accommodating the plurality of battery cells,
wherein the housing includes a pair of end plates spaced apart from each other to accommodate the plurality of battery cells therebetween, side brackets that connect side surfaces of the end plates to each other, and a bottom bracket that connects bottom surfaces of the end plates to each other.
19. The battery module as claimed in claim 1 , wherein at least a portion of the heat resistance member overlaps the vent portions.
20. The battery module as claimed in claim 7 , wherein the non-contact portions are shorter than the contact portions in a height direction of the cover, the height direction being perpendicular to both the length direction of the cover and a width direction of the cover.