CN-224232867-U - Box assembly, battery and power utilization device

Abstract

The application discloses a box body assembly, a battery and an electric device, wherein the box body assembly comprises a frame, at least one heat exchange beam and at least one heat exchange beam, wherein the frame comprises a bottom plate and side plates arranged around the bottom plate, the bottom plate and the side plates jointly surround to form a containing cavity, the heat exchange beam is arranged in the containing cavity to divide the containing cavity into a plurality of containing subchambers, and a heat exchange channel for heat exchange medium to flow is arranged in the heat exchange beam, so that the heat exchange beam not only can improve the integral rigidity of the frame, but also can integrate heat exchange functions due to the heat exchange channel for heat exchange medium to flow, and the space utilization rate of the box body assembly is improved, thereby improving the energy density of the battery.

Inventors

• LI XING
• TANG YU
• JIN HAIZU
• ZHANG CHENCHEN
• LI ZHENHUA
• XU CHENYI

Assignees

• 宁德时代新能源科技股份有限公司

Dates

Publication Date

20260512

Application Date

20220817

Claims (20)

1. 1. A tank assembly, comprising: The frame comprises a bottom plate and side plates arranged around the bottom plate, and the bottom plate and the side plates jointly surround to form a containing cavity; The heat exchange beam is arranged in the accommodating cavity to divide the accommodating cavity into a plurality of accommodating subchambers, and a heat exchange channel for heat exchange medium to flow is arranged in the heat exchange beam; Wherein, the heat exchange beam includes: a beam body having opposite first and second sidewalls in a thickness direction thereof; at least one first heat exchange plate, wherein the first heat exchange plate is arranged on the first side wall; and/or at least one second heat exchange plate, wherein the second heat exchange plate is arranged on the second side wall.
2. 2. The housing assembly of claim 1, wherein the first side wall is recessed to form at least one first receiving groove, and any one of the first heat exchange plates is disposed in one of the first receiving grooves; And/or, at least one second accommodating groove is formed in the second side wall in a concave manner, and any one of the second heat exchange plates is arranged in one of the second accommodating grooves.
3. 3. A tank assembly according to any one of claims 1-2, wherein a first flow channel is provided in the bottom plate for the flow of a heat exchange medium.
4. 4. The cabinet assembly according to any one of claims 1-2, further comprising at least one first heat dissipating plate, wherein the first heat dissipating plate is disposed on a surface of the bottom plate facing or facing away from the receiving cavity.
5. 5. The cabinet assembly according to any one of claims 1-2, further comprising at least one first heat dissipating plate, wherein at least one first receiving cavity is provided in the bottom plate, and wherein the first heat dissipating plate is provided in the first receiving cavity.
6. 6. The cabinet assembly according to any one of claims 1-2, wherein the frame further comprises a cover plate disposed at an end of the side plate remote from the bottom plate to seal the receiving cavity.
7. 7. The tank assembly of claim 6, wherein a second flow channel is provided in the cover plate for flow of a heat exchange medium.
8. 8. The housing assembly of claim 6, further comprising at least one second heat sink plate disposed on a surface of the cover plate facing toward or away from the receiving cavity.
9. 9. The cabinet assembly of claim 6, further comprising at least one second heat sink, wherein at least one second receiving cavity is disposed in the cover plate, and wherein the second heat sink is disposed in the second receiving cavity.
10. 10. A battery comprising a battery cell and a housing assembly as claimed in any one of claims 1 to 9, wherein the receiving subchamber is adapted to receive the battery cell.
11. 11. The battery according to claim 10, wherein the heat exchange beam is configured as a heat exchange cross beam and/or a heat exchange side beam, and the dimension of the battery cell in the height direction of the heat exchange beam is smaller than the dimension of the battery cell in the extending direction of the heat exchange beam and the dimension of the battery cell in the thickness direction of the heat exchange beam.
12. 12. The battery of claim 10, wherein the battery cells are provided with a pressure relief mechanism, and wherein the pressure relief mechanism faces the heat exchange beam.
13. 13. The battery of claim 12, wherein each of the battery cells is disposed adjacent at least one of the heat exchange beams and the pressure relief mechanism faces at least one of the heat exchange beams adjacent thereto.
14. 14. The battery according to claim 12 or 13, wherein the battery cell is further provided with an electrode terminal, and the electrode terminal and the pressure release mechanism are provided on two adjacent or opposite surfaces of the battery cell, respectively.
15. 15. The battery of claim 12, wherein the battery comprises a battery row formed by a plurality of the battery cells arranged along a first direction, and the heat exchange beam extends along the first direction.
16. 16. The battery of claim 15, wherein a vent cavity is disposed within the heat exchange beam, the vent cavity adapted to receive a vent of the battery cell from the pressure relief mechanism.
17. 17. The battery of claim 16, wherein the heat exchange beam is provided with at least one docking portion through which the vent lumen is adapted to receive the venting of the battery cell from the pressure relief mechanism.
18. 18. The battery of claim 17, wherein the plurality of docking portions are provided in plurality and the plurality of docking portions are spaced apart along the first direction, wherein any one of the docking portions is configured to correspond to the pressure relief mechanism of at least one of the battery cells.
19. 19. The battery of claim 15, wherein the battery rows have a plurality of rows, at least two of the plurality of rows being stacked in a height direction of the heat exchange beam.
20. 20. The battery of claim 19, wherein the heat exchange beam is provided with a plurality of docking portions at intervals along a height direction thereof, wherein any one of the docking portions is configured to be provided corresponding to the pressure release mechanism of at least one of the battery cells.

Description

Box assembly, battery and power utilization device Technical Field The application relates to the field of batteries, in particular to a box assembly, a battery and an electric device. Background At present, power batteries have been widely used in various fields related to energy storage, and as the application fields of power batteries are continuously expanded, the market demands thereof are also continuously expanding. In order to ensure safe operation of the power battery, a thermal management component is generally required to be arranged in the box assembly so as to improve the heat dissipation effect of the battery. However, in the existing power battery, the thermal management component is generally disposed at the bottom inside the case assembly, resulting in a reduction in space utilization of the case assembly, reducing battery energy density, and seriously affecting battery performance. Content of the application In view of the above, the present application provides a case assembly, a battery and an electric device, which are beneficial to improving the space utilization of the case assembly while meeting the heat dissipation requirement. The application provides a box body assembly which comprises a frame, at least one heat exchange beam and a plurality of heat exchange channels, wherein the frame comprises a bottom plate and side plates arranged around the bottom plate, the bottom plate and the side plates jointly surround to form a containing cavity, the heat exchange beam is arranged in the containing cavity to divide the containing cavity into a plurality of containing subchambers, and the heat exchange beam is internally provided with the heat exchange channels for heat exchange media to flow. In the technical scheme of the embodiment of the application, after the battery monomer is placed in the accommodating cavity, the battery monomer can exchange heat with the heat exchange beam so as to realize heat dissipation or temperature rise treatment of the battery monomer, the heat exchange beam not only can improve the overall rigidity of the frame, but also can integrate a heat exchange function due to the heat exchange channel for the heat exchange medium to flow in the heat exchange beam, and when the box body assembly is applied to a battery, the space utilization rate in the battery can be improved, so that the energy density of the battery is improved. In combination with the first aspect, in some embodiments, the heat exchange beam comprises a beam body having opposite first and second side walls along a thickness direction thereof, at least one first heat exchange plate disposed on the first side wall, and/or at least one second heat exchange plate disposed on the second side wall. By means of the structural design, the beam body, the first heat exchange plate and the second heat exchange plate can be assembled after being independently molded, and molding difficulty of the heat exchange beam is reduced. In combination with the first aspect, in some embodiments, the first side wall is recessed with at least one first receiving groove and any one of the first heat exchange plates is disposed within one of the first receiving grooves, and/or the second side wall is recessed with at least one second receiving groove and any one of the second heat exchange plates is disposed within one of the second receiving grooves. The thickness of the heat exchange beam can be reduced by the aid of the structural design, so that the volume of the heat exchange beam can be reduced, and the space utilization rate of the box assembly when the box assembly is applied to a battery is further improved. With reference to the first aspect, in some embodiments, the heat exchange beam includes a beam body and at least one heat exchange plate, wherein the beam body is provided with a mounting cavity, and the heat exchange plate is disposed in the mounting cavity. The structural design can not only reduce the thickness of the heat exchange beam to improve the space utilization rate of the box body assembly when the box body assembly is applied to a battery, but also improve the assembly efficiency of the heat exchange beam. With reference to the first aspect, in some embodiments, the heat exchange beam further comprises a stiffener, and the stiffener is connected between the heat exchange plate and the inner wall of the mounting cavity. The structural design not only can increase the structural strength of the heat exchange beam, but also can play a role in heat conduction so as to improve the heat exchange performance between the beam body and the heat exchange plate. With reference to the first aspect, in some embodiments, a first flow channel is provided in the bottom plate for the flow of the heat exchange medium. The structural design makes the bottom plate and the heat exchange beam respectively exchange heat with the battery monomer after the battery monomer is placed in the accommodating cavity, so that