Battery pack and vehicle

1. A battery pack, comprising:

a battery accommodation box, comprising a box body and a cover body, wherein the box body fits with the cover body to form an accommodation space;

a partition beam, disposed in the accommodation space to partition the accommodation space into a plurality of accommodation units, wherein the partition beam comprises a hitch beam that extends in a first direction parallel to a bottom wall of the box body, a bottom of the hitch beam is fixed to the bottom wall of the box body in a third direction perpendicular to the bottom wall of the box body, and a top of the hitch beam is connected to the cover body; and

a plurality of battery modules, wherein the battery modules comprise a plurality of battery cells, and each battery module is disposed in a corresponding accommodation unit;

wherein, in the third direction, the top of the hitch beam is higher than a top of the battery cells;

wherein a first hitch point configured to connect the battery pack to a vehicle body is disposed at the top of the hitch beam; and

wherein the hitch beam comprises:

a hitch beam top wall, connected to the cover body, wherein the first hitch point is disposed on the hitch beam top wall;

hitch beam side walls, located on two sides of the hitch beam top wall in a second direction and connected to the hitch beam top wall, wherein the second direction is perpendicular to the first direction and parallel to the bottom wall of the box body, and the hitch beam side walls extend from the hitch beam top wall toward the bottom wall of the box body; and

a hitch beam mounting edge, connected to a bottom of one of the hitch beam side walls, wherein the hitch beam mounting edge extends from the one of the hitch beam side walls toward a side away from the one of the hitch beam side walls, and the hitch beam is connected to the bottom wall of the box body through the hitch beam mounting edge.

2. The battery pack according to claim 1 , wherein the partition beam further comprises a reinforcing beam extending in a second direction, the reinforcing beam is connected to the hitch beam, and the second direction is perpendicular to the first direction and parallel to the bottom wall of the box body.

3. The battery pack according to claim 2 , wherein a bottom of the reinforcing beam is fixed to the bottom wall of the box body, and a top of the reinforcing beam is spaced apart from the cover body.

4. The battery pack according to claim 3 , wherein the reinforcing beam comprises:

a reinforcing beam top wall, spaced apart from the cover body;

reinforcing beam side walls, located on two sides of the reinforcing beam top wall in the first direction and connected to the reinforcing beam top wall, wherein the reinforcing beam side walls extend from the reinforcing beam top wall toward the bottom wall of the box body; and

a reinforcing beam mounting edge, connected to a bottom of one of the reinforcing beam side walls, wherein the reinforcing beam mounting edge extends from the one of the reinforcing beam side walls toward a side away from the one of the reinforcing beam side walls, and the reinforcing beam is connected to the bottom wall of the box body through the reinforcing beam mounting edge.

5. The battery pack according to claim 2 , wherein

the hitch beam is integrally disposed in the first direction, and the reinforcing beam comprises a plurality of reinforcing beam sections that are partitioned by the hitch beam and disposed sequentially in the second direction; or

the reinforcing beam is integrally disposed in the second direction, and the hitch beam comprises a plurality of hitch beam sections that are partitioned by the reinforcing beam and disposed sequentially in the first direction.

6. The battery pack according to claim 2 , wherein, in the third direction, the top of the hitch beam is higher than the top of the reinforcing beam.

7. The battery pack according to claim 6 , wherein the battery pack further comprises a connecting member electrically connected to output ends of different battery modules and a signal collecting member electrically connected to the battery cells, and the connecting member and the signal collecting member are disposed at the top of the reinforcing beam.

8. The battery pack according to claim 7 , wherein an avoidance notch configured to avoid the connecting member and the signal collecting member is disposed at a position of joint between the hitch beam and the reinforcing beam.

9. The battery pack according to claim 1 , wherein the cover body comprises a via hole corresponding to the first hitch point.

10. The battery pack according to claim 1 , wherein the first hitch point comprises a connecting hole disposed at the top of the hitch beam.

11. The battery pack according to claim 1 , wherein the battery accommodation box further comprises a cantilever beam, the cantilever beam is fixedly connected to an outer side of a bottom of the box body, bulges protruding outward from side walls of the box body are disposed at two ends of the cantilever beam, and second hitch points configured to connect the battery pack to a vehicle body are disposed on the bulges.

12. The battery pack according to claim 11 , wherein the cantilever beam extends in the first direction and is arranged alternately with the hitch beam in a second direction, and the second direction is perpendicular to the first direction and parallel to the bottom wall of the box body.

13. A vehicle, comprising a vehicle body, a battery pack, and a first hitch component, wherein a first hitch point is disposed at a top of the hitch beam, the first hitch component is configured to connect the battery pack to the vehicle body through the first hitch point, and the battery pack comprises:

a battery accommodation box, comprising a box body and a cover body, wherein the box body fits with the cover body to form an accommodation space;

a partition beam, disposed in the accommodation space to partition the accommodation space into a plurality of accommodation units, wherein the partition beam comprises a hitch beam that extends in a first direction parallel to a bottom wall of the box body, a bottom of the hitch beam is fixed to the bottom wall of the box body in a third direction perpendicular to the bottom wall of the box body, and a top of the hitch beam is connected to the cover body; and

a plurality of battery modules, wherein the battery modules comprise a plurality of battery cells, and each battery module is disposed in a corresponding accommodation unit;

wherein, in the third direction, the top of the hitch beam is higher than a top of the battery cells;

wherein a first hitch point configured to connect the battery pack to a vehicle body is disposed at the top of the hitch beam; and

wherein the hitch beam comprises:

a hitch beam top wall, connected to the cover body, wherein the first hitch point is disposed on the hitch beam top wall;

hitch beam side walls, located on two sides of the hitch beam top wall in a second direction and connected to the hitch beam top wall, wherein the second direction is perpendicular to the first direction and parallel to the bottom wall of the box body, and the hitch beam side walls extend from the hitch beam top wall toward the bottom wall of the box body; and

a hitch beam mounting edge, connected to a bottom of one of the hitch beam side walls, wherein the hitch beam mounting edge extends from the one of the hitch beam side walls toward a side away from the one of the hitch beam side walls, and the hitch beam is connected to the bottom wall of the box body through the hitch beam mounting edge.