Battery module comprising end plates having improved strucutre, and end plate member therefor
The present disclosure discloses a battery module including a cell assembly including a plurality of cells arranged in a direction, and an end plate member configured to cover at least outermost sides of the cell assembly in the cell arrangement direction, wherein the end plate member includes two or more openings configured as holes bored in a thickness direction of end plates, and a frame part located between neighboring openings and having rigidity.
1. A battery module comprising:
a cell assembly comprising a plurality of cells arranged in a first direction;
an end plate member configured to cover at least an outermost side of the cell assembly in the cell arrangement direction, the end plate member having a length in a second direction and a height in a third direction, the length being greater than the height,
wherein the end plate member comprises two or more openings configured as holes bored in a thickness direction of an end plate, and a frame part located between neighboring openings and having rigidity, the two or more holes being arranged symmetrically in the second direction around a center of the end plate, and
wherein the two or more openings having a length in the second direction and a height in the third direction, the length being greater than the height.
2. The battery module of claim 1 , wherein the frame part comprises a first frame extending from a lengthwise center of the end plate member in a height direction of the end plate member, and
wherein the openings are symmetrically provided at two sides of the first frame.
3. The battery module of claim 2 , wherein the frame part comprises a second frame extending perpendicularly from the first frame in a length direction of the end plate member, and
wherein the openings are symmetrically provided above and under the second frame.
4. The battery module of claim 1 , wherein the openings are provided by rectangular holes extending in a length direction of the end plate member.
5. An end plate member of a battery module, the end plate member configured to cover an outermost side of a cell assembly in a cell arrangement direction, the end plate comprising:
a length in a second direction and a height in a third direction, the length being greater than the height; and
two or more openings configured as holes bored in a thickness direction of an end plate, and a frame part located between neighboring openings,
wherein the frame part extends in the third direction of the end plate and through a center of the end plate, and
wherein the two or more openings having a length in the second direction and a height in the third direction, the length being greater than the height.
6. The end plate member of claim 5 , wherein the frame part comprises a first frame extending from a lengthwise center of the end plate member in a height direction of the end plate member, and
wherein the openings are symmetrically provided at two sides of the first frame.
7. The end plate member of claim 6 , wherein the frame part comprises a second frame extending perpendicularly from the first frame in a length direction of the end plate member, and
wherein the openings are symmetrically provided above and under the second frame.
8. The end plate member of claim 5 , wherein the openings are provided by rectangular holes extending in a length direction of the end plate member.