BATTERY MODULE
A battery module including a first end plate and a second end plate that face each other, wherein the first and second end plate each include a protrusion; a plurality of battery cells stacked together between the first and second end plates, each of the battery cells having a vent thereon; and a degassing cover covering the vent of each of the battery cells, wherein the degassing cover includes an accommodating unit accommodating the protrusion.
1 . A battery module comprising:
a first end plate and a second end plate facing each other, wherein at least one of the first and second end plates comprises a protrusion;
a plurality of battery cells stacked together between the first end plate and the second end plate, each of the battery cells having a vent thereon; and
a degassing cover covering the vent of each of the battery cells, wherein the degassing cover comprises an accommodating unit accommodating the protrusion.
2 . The battery module as claimed in claim 1 , wherein the protrusion directly contacts the degassing cover.
3 . The battery module as claimed in claim 1 , wherein the accommodating unit comprises a double wall, and wherein the protrusion contacts the double wall.
4 . The battery module as claimed in claim 3 , wherein the protrusion is shaped to generally correspond to a space within the double wall of the accommodating unit.
5 . The battery module as claimed in claim 1 , wherein at least one surface of the protrusion is a roughened surface.
6 . The battery module as claimed in claim 5 ,
wherein the roughened surface is provided on a surface of the protrusion that faces away from the battery cells, and
wherein the accommodating unit further comprises a roughened surface on a surface corresponding to the roughened surface of the protrusion.
7 . The battery module as claimed in claim 1 , further comprising an adhesive member between the protrusion and the accommodating unit.
8 . The battery module as claimed in claim 7 , wherein the adhesive member is double-sided tape.
9 . The battery module as claimed in claim 1 , further comprising fastening units in the protrusion and in the accommodating unit corresponding to the protrusion.
10 . The battery module as claimed in claim 9 , wherein the fastening unit is a groove-protrusion assembly or a hook assembly.
11 . The battery module as claimed in claim 1 ,
wherein the degassing cover contacts each of the battery cells to form a gas channel, and
wherein the degassing cover has a discharge hole coupled to the gas channel.
12 . The battery module as claimed in claim 11 , wherein the discharge hole is T-shaped to protrude from one side of the degassing cover and to have through holes oriented in opposing directions.
13 . The battery module as claimed in claim 11 , wherein the protrusion comprises an opening generally corresponding to the discharge hole.
14 . The battery module as claimed in claim 13 , wherein the opening is U-shaped having an open side.
15 . The battery module as claimed in claim 1 , wherein the battery module further comprises coupling members coupling the first and second end plates to each other.
16 . The battery module as claimed in claim 15 , wherein the coupling members comprise side brackets for supporting sides of the plurality of battery cells and a bottom bracket for supporting a bottom of the battery cells