Casing for accommodating battery module and battery pack

1. A casing for accommodating battery module, wherein the casing comprises:

a housing comprising a bottom plate and a side plate connected to the bottom plate, wherein the bottom plate and the side plate enclose an accommodating space, and the bottom plate is provided with a plurality of recesses opening to the accommodating space; and

a buffer assembly comprising at least a first buffer member, which is filled in the recess,

wherein the bottom plate comprises an inner surface and an outer surface opposite to each other, wherein the recess is located on the inner surface,

wherein the buffer assembly further comprises a second buffer member disposed at a side of the first buffer member away from the bottom plate,

wherein the second buffer member comprises an elastic sheet, there are one or more elastic sheets, and when there are two or more elastic sheets, they are spaced apart from each other, and

wherein the second buffer member further comprises a plurality of limiting strips, the limiting strips are spaced apart along an outer periphery of the elastic sheet for limiting a distance between the battery module and the bottom plate.

2. The casing according to claim 1 , wherein a top surface of the first buffer member is flush with the inner surface or protrudes from the inner surface.

3. The casing according to claim 1 , wherein the recess is a strip-shaped recess, the strip-shaped recesses are spaced apart on the bottom plate and extend in a same direction, and the first buffer member comprises a plurality of elastic strips, which are disposed corresponding to the strip-shaped recesses.

4. The casing according to claim 1 , wherein the recess is a block-shaped recess, the block-shaped recesses are spaced apart on the bottom plate, and the first buffer member comprises a plurality of elastic blocks, which are disposed corresponding to the block-shaped recesses.

5. The casing according to claim 1 , wherein the recesses are distributed on the bottom plate to form a grid distribution, and the first buffer member are mesh-shaped elastomers, which are arranged in the respective recesses in the grid distribution.

6. The casing according to claim 1 , wherein a plurality of through holes are formed in the elastic sheet.

7. The casing according to claim 2 , wherein the recess is a strip-shaped recess, the strip-shaped recesses are spaced apart on the bottom plate and extend in a same direction, and the first buffer member comprises a plurality of elastic strips, which are disposed corresponding to the strip-shaped recesses.

8. The casing according to claim 2 , wherein the recess is a block-shaped recess, the block-shaped recesses are spaced apart on the bottom plate, and the first buffer member comprises a plurality of elastic blocks, which are disposed corresponding to the block-shaped recesses.

9. The casing according to claim 2 , wherein the recesses are distributed on the bottom plate to form a grid distribution, and the first buffer member are mesh-shaped elastomers, which are arranged in the respective recesses in the grid distribution.

10. A battery pack comprising:

one or more battery modules; and

a casing for accommodating the one or more battery modules, wherein the casing comprises:

a housing comprising a bottom plate and a side plate connected to the bottom plate, wherein the bottom plate and the side plate enclose an accommodating space, and the bottom plate is provided with a plurality of recesses opening to the accommodating space; and

a buffer assembly comprising at least a first buffer member, which is filled in the recess,

wherein the buffer assembly is located between the battery module and the bottom plate,

wherein the bottom plate comprises an inner surface and an outer surface opposite to each other, wherein the recess is located on the inner surface,

wherein the buffer assembly further comprises a second buffer member disposed at a side of the first buffer member away from the bottom plate,

wherein the second buffer member comprises an elastic sheet, there are one or more elastic sheets, and when there are two or more elastic sheets, they are spaced apart from each other, and

wherein the second buffer member further comprises a plurality of limiting strips, the limiting strips are spaced apart along an outer periphery of the elastic sheet for limiting a distance between the battery module and the bottom plate.

11. The battery pack according to claim 10 , wherein the battery pack further comprises an adhesive for fixing the one or more battery modules to the bottom plate.

12. The battery pack according to claim 10 , wherein a top surface of the first buffer member is flush with the inner surface or protrudes from the inner surface.

13. The battery pack according to claim 10 , wherein the recess is a strip-shaped recess, the strip-shaped recesses are spaced apart on the bottom plate and extend in a same direction, and the first buffer member comprises a plurality of elastic strips, which are disposed corresponding to the strip-shaped recesses.

14. The battery pack according to claim 10 , wherein the recess is a block-shaped recess, the block-shaped recesses are spaced apart on the bottom plate, and the first buffer member comprises a plurality of elastic blocks, which are disposed corresponding to the block-shaped recesses.

15. The battery pack according to claim 10 , wherein the recesses are distributed on the bottom plate to form a grid distribution, and the first buffer member are mesh-shaped elastomers, which are arranged in the respective recesses in the grid distribution.