CN-224204236-U - Battery pack, battery pack and vehicle

Abstract

The disclosure relates to a battery assembly, a battery pack and a vehicle, wherein the battery assembly comprises a battery pack bottom structure, a connecting plate and a reinforcing piece, the battery pack bottom structure is connected with the reinforcing piece, the connecting plate is connected with the battery pack bottom structure, the battery pack bottom structure and the connecting plate are provided with widths in the left-right direction of the battery assembly, the widths of the battery pack bottom structure are larger than those of the connecting plate, the parts, exposed to the connecting plate, of the battery pack bottom structure are configured to be mounting areas, at least one pair of reinforcing ribs are arranged on the reinforcing piece, at least part of the reinforcing ribs are located in the mounting areas, the reinforcing ribs are provided with a first side and a second side which are oppositely arranged, the first side is far away from the connecting plate compared with the second side, and the distance between the two reinforcing ribs in the first side and the second side in the front-rear direction of the battery assembly is smaller than the distance between the two reinforcing ribs in the second side. The battery assembly is suitable for improving the safety performance of the battery pack during side collision.

Inventors

• XU CHENG
• XING ZHIWEI
• LIU TENGYONG
• HUANG YU
• YAN JUNFEI

Assignees

• 比亚迪股份有限公司

Dates

Publication Date

20260505

Application Date

20250325

Claims (14)

1. 1. The battery assembly comprises a battery pack bottom structure, a connecting plate and a reinforcing piece, wherein the battery pack bottom structure is connected with the reinforcing piece, the connecting plate is connected with the battery pack bottom structure, the battery pack bottom structure and the connecting plate are provided with widths in the left-right direction of the battery assembly, the widths of the battery pack bottom structure are larger than those of the connecting plate, the part of the battery pack bottom structure, which is exposed to the connecting plate, in the left-right direction is configured as a mounting area, at least one pair of reinforcing ribs are arranged on the reinforcing piece, and the reinforcing ribs are at least partially positioned in the mounting area; The reinforcing ribs are provided with a first side and a second side which are opposite in the left-right direction, the first side is far away from the connecting plate compared with the second side, and the distance between the two reinforcing ribs on the first side is smaller than the distance between the two reinforcing ribs on the second side in the front-back direction of the battery assembly.
2. 2. The battery pack according to claim 1, wherein the reinforcing ribs are provided at intervals from the outer edge of the battery pack bottom structure in the left-right direction of the battery pack, and the reinforcing ribs are arranged inside the outer edge of the battery pack bottom structure.
3. 3. The battery pack according to claim 1, wherein a second connection part is provided between two of the reinforcing ribs provided in pairs in the front-rear direction of the battery pack, and the battery pack bottom structure and the connection plate are connected by the second connection part.
4. 4. A battery assembly according to any one of claims 1-3, wherein at least one of the opposite sides of the bottom structure of the battery pack is provided with at least two reinforcing members, and wherein the at least two reinforcing members on the same side are connected by a first connecting member.
5. 5. A battery assembly according to any one of claims 1-3, wherein the opposite sides of the bottom structure of the battery pack are provided with at least one reinforcing member, respectively, wherein the reinforcing member of one side is connected to the reinforcing member of the other side by a second connecting member.
6. 6. The battery pack according to claim 5, wherein at least two reinforcing members are provided at opposite sides of the bottom structure of the battery pack, respectively, and at least two of the second connecting members are spaced apart in the front-rear direction of the battery pack.
7. 7. The battery assembly according to any one of claims 1 to 3, wherein the reinforcement has a width in a front-rear direction of the battery assembly, the reinforcement being at least partially located in the mounting region; The reinforcement has a third side and a fourth side disposed opposite to each other in the left-right direction, the third side being farther from the connection plate than the fourth side, and a width of the reinforcement at the third side being smaller than a width of the reinforcement at the fourth side.
8. 8. A battery assembly according to any one of claims 1 to 3, wherein the reinforcing ribs are configured as downwardly projecting ribs.
9. 9. A battery pack comprising the battery assembly of any one of claims 1-8.
10. 10. A vehicle comprising the battery pack of claim 9, the vehicle comprising a body, the body being coupled to the battery assembly.
11. 11. The vehicle according to claim 10, wherein the vehicle body includes a rocker beam, the battery assembly is connected to the rocker beam, and the reinforcing rib is provided at a spacing from an outer side of the rocker beam in a left-right direction of the vehicle.
12. 12. The vehicle according to claim 11, characterized in that the rocker beam has a rocker outer side and a rocker inner side in a left-right direction of the vehicle, the first side of the reinforcing bead being located between the rocker outer side and the rocker inner side.
13. 13. The vehicle according to claim 12, characterized in that the rocker comprises a rocker web and a rocker outer panel, the rocker web being connected to the rocker outer panel and enclosing a rocker cavity, wherein the reinforcement rib is located on the side of the rocker outer panel facing the web in the left-right direction of the vehicle.
14. 14. The vehicle according to claim 10, characterized in that a first connecting portion is provided between two of the reinforcing beads provided in pairs in a front-rear direction of the vehicle; the battery assembly is connected with a threshold beam of the vehicle body through a first connecting part.

Description

Battery pack, battery pack and vehicle Technical Field The disclosure relates to the technical field of power batteries, and in particular relates to a battery assembly, a battery pack and a vehicle. Background In the related art, the safety performance of the battery pack is critical, and at present, it is highly desirable to improve the safety performance of the battery pack in side collision. Disclosure of utility model It is an object of the present disclosure to provide a battery assembly adapted to improve the safety performance of a battery pack at the time of side collision. In order to achieve the above object, the present disclosure provides a battery pack including a battery pack bottom structure, a connection plate and a reinforcement, the battery pack bottom structure and the reinforcement being connected, the connection plate being connected with the battery pack bottom structure, wherein the battery pack bottom structure and the connection plate have a width in a left-right direction of the battery pack, the width of the battery pack bottom structure is greater than that of the connection plate, and a portion of the battery pack bottom structure exposed to the connection plate in the left-right direction is configured as a mounting area, the reinforcement being provided with at least one pair of reinforcing ribs, the reinforcing ribs being at least partially located in the mounting area; The reinforcing ribs are provided with a first side and a second side which are oppositely arranged in the left-right direction, the first side is far away from the connecting plate compared with the second side, and the distance between the two reinforcing ribs in the front-back direction of the battery assembly is smaller than the distance between the two reinforcing ribs in the second side. Optionally, in the left-right direction of the battery assembly, the reinforcing ribs are disposed at intervals from the outer edge of the battery pack bottom structure, and the reinforcing ribs are disposed inside the outer edge of the battery pack bottom structure. Optionally, a second connection part is provided between two of the reinforcing ribs provided in pairs in the front-rear direction of the battery assembly, and the battery pack bottom structure and the connection plate are connected by the second connection part. Optionally, at least one of the opposite sides of the bottom structure of the battery pack is provided with at least two reinforcing members, and at least two reinforcing members on the same side are connected by a first connecting member. Optionally, at least one reinforcing member is disposed on opposite sides of the bottom structure of the battery pack, and the reinforcing member on one side is connected to the reinforcing member on the other side through a second connecting member. Optionally, at least two reinforcing members are respectively disposed on opposite sides of the bottom structure of the battery pack, and at least two second connecting members are arranged at intervals along the front-rear direction of the battery assembly. Optionally, the reinforcement has a width in a front-rear direction of the battery assembly, the reinforcement being at least partially located at the mounting region; the reinforcement has a third side and a fourth side disposed opposite to each other in the left-right direction, the third side being farther from the connection plate than the fourth side, and a width of the reinforcement at the third side being smaller than a width at the fourth side. Optionally, the reinforcing ribs are configured as downwardly convex ribs. According to a second aspect of the present disclosure, there is provided a battery pack including the battery assembly as described above. According to a third aspect of the present disclosure, there is provided a vehicle comprising a battery pack as described above, the vehicle comprising a body, the body being connected with the battery assembly. Optionally, the vehicle body includes a rocker beam, the battery assembly is connected with the rocker beam, and the reinforcing rib is disposed at an interval from an outer side of the rocker beam in a left-right direction of the vehicle. Optionally, the rocker beam has a rocker outer side and a rocker inner side in a left-right direction of the vehicle, and the first side of the reinforcing bead is located between the rocker outer side and the rocker inner side. Optionally, the threshold beam includes a threshold beam connecting plate and a threshold beam outer plate, the threshold beam connecting plate is connected with the threshold beam outer plate and encloses a threshold cavity, wherein, in the left-right direction of the vehicle, the reinforcing rib is located at one side of the threshold beam outer plate towards the connecting plate. Optionally, a first connecting portion is provided between two of the reinforcing ribs provided in pairs in the front-rear direction of the vehicle; the bat