Battery module
A battery module includes: a plurality of secondary battery cells; and a housing unit having an internal space in which the plurality of secondary battery cells are accommodated and including a plate member extending a flame or gas path.
1. A battery module comprising:
a plurality of secondary battery cells; and
a housing unit having an internal space in which the plurality of secondary battery cells are accommodated and including a plate member extending a flame or gas path,
wherein the plate member includes:
a first plate portion and a second plate portion facing each other in a first direction; and
a core portion comprising a plurality of unit column portions disposed between the first plate portion and the second plate portion and an opening portion formed on each of the plurality of unit column, the plurality of unit column portions disposed in a direction perpendicular to the first direction and communicated with each other through the opening portion,
wherein the plurality of unit column portions comprises:
a first unit column portion communicated with the flame or gas path;
a plurality of second unit column portions disposed along a circumference of the first unit column portion; and
a plurality of third unit column portion disposed along a circumference of each of the plurality of second unit column portion,
wherein the first unit column portion has an opening portion communicating with the plurality of second unit column portions, and wherein each of the plurality of second column portions has an opening portion communicating with the plurality of third unit column potions, and
wherein the opening portion of the first column portion and the opening portion of each of the plurality of second column portions are formed on each surface not to face each other in the direction perpendicular to the first direction to dissipate a flame or gas.
2. The battery module of claim 1 , wherein
at least one of the plurality of unit column portion is provided in the form of a hollow polygonal column, and is configured to form the flame or gas path.
3. The battery module of claim 1 , wherein the core portion is formed in a pattern in which the plurality of unit column portions are repeated.
4. The battery module of claim 1 , wherein the opening portion is formed on a column surface of each of the plurality of unit column portions.
5. The battery module of claim 1 , wherein the opening portion of the first unit column portion is formed adjacent to the first plate portion and the opening portion of each of the second unit column portions is formed adjacent to the second plate portion to form the flame or gas path in a zigzag form.
6. The battery module of claim 1 , wherein the plate member includes an opening/closing plate portion connected to the second plate portion and opening or closing an entrance portion formed on the second plate portion to communicate the core portion with the internal space.
7. The battery module of claim 6 , wherein the opening/closing plate portion is formed to be broken by heat or pressure caused by an explosion of any one of the secondary battery cells.
8. The battery module of claim 6 , wherein one end of the opening/closing plate portion is hinge-coupled to the second plate portion so that the opening/closing plate portion is rotated by pressure caused by an explosion of any one of the secondary battery cells to open the entrance portion.
9. The battery module of claim 1 , wherein the plate member includes an accommodation member accommodated in at least one of the plurality of unit column portions and formed of a material for performing at least one of an extinguishing function, a heat absorption function, and a fire resistance function.
10. The battery module of claim 1 ,
wherein the first plate portion disposed to expose to outside of the housing portion, and the second plate portion faces the internal space.
11. The battery module of claim 1 , wherein the housing unit includes:
a bottom member on which the plurality of secondary battery cells are seated;
sidewall members provided at edges of the bottom member; and
a cover member provided on upper ends of the sidewall members, and
the plate member is provided for at least one of the bottom member, the sidewall members, and the cover member.
12. The battery module of claim 1 , wherein the housing unit includes a partition member disposed in the internal space to divide the internal space, and
the plate member is provided for the partition member.