Box body, battery pack and vehicle

Abstract

The utility model discloses a box body, a battery pack and a vehicle, the box body comprises a water cooling plate and a frame which are connected, the water cooling plate is arranged at the bottom of the frame in the first direction and defines a mounting area together with the frame, the surface, facing the mounting area, of the frame is provided with a supporting structure, the supporting structure comprises a supporting part and a reinforcing part, and the supporting part is arranged in the first direction; the height of the supporting part is larger than or equal to that of the water cooling plate, in the plane perpendicular to the first direction, the projection of the supporting part and the projection of the water cooling plate both fall within the projection range of the installation area, and the reinforcing part is connected to the included angle between the supporting part and the frame. According to the box body, the battery pack and the vehicle, the weight of the battery cells can be prevented from being completely concentrated on the water cooling plate, and the overall stability of the box body is guaranteed.

Description

Technical Field

[0001] The present application belongs to the technical field of electric vehicles, and in particular, relates to a box, a battery pack and a vehicle. Background Art

[0002] With the development of electric vehicles, the requirements for the endurance of electric vehicles have also increased. In the structure of traditional battery modules, the entire battery module is required to encapsulate the battery cells, and then the battery module is placed in the battery pack box. The setting of the battery module leads to a small number of battery cells and low battery energy density, which seriously affects the endurance of the vehicle.

[0003] At present, in order to solve the problem of battery modules occupying too much space, CTP (Cell to Pack) technology is usually used, that is, the step of encapsulating the battery cells in the battery module is eliminated, and the battery cells are directly integrated on the water cooling plate, so that the battery pack box can accommodate more battery cells, so that the vehicle's endurance can be improved. However, when the battery cells are directly installed on the water cooling plate, the water cooling plate directly bears the weight of all the battery cells, which makes the water cooling plate prone to breakage and reduces the overall stability of the box. Utility Model Content

[0004] The present application provides a box, a battery pack and a vehicle, which can prevent the weight of the battery cells from being concentrated entirely on the water cooling plate, thereby ensuring the overall stability of the box.

[0005] The present application provides a box body, which includes a water-cooling plate and a frame that are connected and arranged. Along a first direction, the water-cooling plate is arranged at the bottom of the frame and defines an installation area together with the frame. The surface of the frame facing the installation area has a supporting structure. The supporting structure includes a supporting part and a reinforcing part. Along the first direction, the height of the supporting part is greater than or equal to the height of the water-cooling plate. In a plane perpendicular to the first direction, the projection of the supporting part and the projection of the water-cooling plate both fall within the projection range of the installation area. The reinforcing part is connected at the angle between the supporting part and the frame.

[0006] As above, the box also includes a support beam assembly, which is arranged in the installation area and connected to the inner surface of the frame. The surface of the support beam assembly facing the frame is provided with a support structure, and the reinforcement part of the support structure is connected at the angle between the support part and the support beam assembly.

[0007] As in the box body above, the support beam assembly includes at least one transverse beam extending along the second direction and at least one longitudinal beam extending along the third direction, the extension length of the longitudinal beam is greater than the extension length of the transverse beam, and the support structure is connected to the two side surfaces of the longitudinal beam facing the installation area.

[0008] As in the box body above, the reinforcing part includes a plurality of connecting segments connected at preset angles, adjacent connecting segments are fixedly connected, the connecting segments at both ends are fixedly connected to the frame and the supporting part respectively, and the reinforcing part, the frame and the supporting part together enclose an internal hollow frame structure.

[0009] As in the box above, the connecting section near the installation area extends along the first direction, and in a plane perpendicular to the first direction, the projection of the reinforcement part is outside the projection range of the installation area, and there is a preset gap between the connecting section near the installation area and the installation area.

[0010] A box as above, wherein the frame includes two first frames and two second frames, the two first frames are arranged at intervals and are parallel to the cross beam, the two second frames are arranged at intervals and are parallel to the longitudinal beam, the second frame includes a first connecting portion and a second connecting portion connected along a second direction, the supporting structure is connected to a side of the second connecting portion away from the first connecting portion, the upper surface of the first connecting portion is provided with a first mounting point for connecting to a frame of a vehicle, and the upper surface of the second connecting portion is provided with a connecting point for connecting to an upper cover of a battery pack.

[0011] As the box body above, the first connecting part has at least one first reinforcing rib and at least one second reinforcing rib arranged vertically, the first reinforcing rib and the second reinforcing rib are connected, and the second connecting part has a plurality of third reinforcing ribs arranged at intervals along the height direction of the box body.

[0012] As in the box body above, the cross beam has a first plug-in portion and a plurality of second mounting points, the longitudinal beam has a second plug-in portion, the first plug-in portion and the second plug-in portion are arranged relative to each other and connected by plug-in fitting; the surface of the water-cooling plate has a plurality of connecting holes, the plurality of connecting holes and the plurality of second mounting points are arranged relative to each other, the plurality of connecting holes and the plurality of second mounting points are connected to the vehicle frame through a plurality of connecting members, and the connecting members are sequentially passed through the corresponding second mounting points and the corresponding connecting holes.

[0013] On the other hand, the present application also provides a battery pack, which includes the above-mentioned box body, the battery pack also includes a battery cell assembly, an upper cover and a lower cover, the battery cell assembly is arranged in the installation area, the battery cell assembly includes multiple battery cells, and the two ends of each battery cell along the second direction are respectively mounted on the support structure of the frame and the support structure of the longitudinal beam, the upper cover is arranged on the top of the battery cell assembly and connected to the frame, and the lower cover is arranged on the bottom of the water cooling plate.

[0014] On the other hand, the present application also provides a vehicle, which includes the above-mentioned battery pack, and the vehicle also includes a frame, and the battery pack is installed on the frame.

[0015] The box body of the present application includes a water-cooling plate and a frame that are connected and arranged. Along a first direction, the water-cooling plate is arranged at the bottom of the frame and defines an installation area together with the frame. The battery cell assembly is arranged inside the installation area for installation. The surface of the frame facing the installation area has a supporting structure. The supporting structure includes a supporting part and a reinforcing part. In a plane perpendicular to the first direction, the projection of the supporting part and the projection of the water-cooling plate both fall within the projection range of the installation area. When the battery cell assembly is installed inside the installation area, it can be supported by the supporting part and the water-cooling plate, so that the battery cell assembly can be stably installed, and the height of the supporting part is greater than or equal to the height of the water-cooling plate. Such an arrangement ensures that the battery cell assembly will inevitably be supported by the supporting part during installation. The supporting part can bear a part of the weight of the battery cell assembly to avoid the weight of the battery cell assembly being concentrated entirely on the water-cooling plate. Moreover, the reinforcing part of the supporting structure is connected to the angle between the supporting part and the frame, which increases the connection stability of the supporting part, ensures the installation stability of the battery cell assembly installed in the installation area, and ensures the overall stability of the box body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 An exploded view of a box body according to an embodiment of the present application;

[0018] Figure 2 This is a schematic structural diagram of a second frame of a box body according to an embodiment of the present application;

[0019] Figure 3 This is a schematic diagram of the installation of the box and the battery cell assembly according to an embodiment of the present application;

[0020] Figure 4 This is a cross-sectional view of the box and the battery cell assembly after installation according to the embodiment of the present application;

[0021] Figure 5 This is a schematic structural diagram of the longitudinal beam of the box body of the embodiment of the present application;

[0022] Figure 6 This is a schematic structural diagram of a first frame of a box body according to an embodiment of the present application;

[0023] Figure 7 A schematic structural diagram of another embodiment of the second frame of the box body of the embodiment of the present application;

[0024] Figure 8 This is a schematic diagram of the structure of the cross beam and longitudinal beam of the box body of the embodiment of the present application;

[0025] Fig. 9This is a schematic diagram of the coordination between the water cooling plate and supporting structure of the box and the battery cell assembly according to an embodiment of the present application.

[0026] Description of Figure Numbers:

[0027] 10. Water-cooled plate; 11. Connecting hole; 20. Frame; 21. First frame; 22. Second frame; 221. First connecting part; 2211. First reinforcing rib; 2212. Second reinforcing rib; 222. Second connecting part; 2221. Third reinforcing rib; 223. First mounting point; 224. Connecting point; 225. Fourth reinforcing rib; 30. Support beam assembly; 31. Crossbeam; 311. First plug-in part; 312. Second mounting point; 32. Longitudinal beam; 321. Second plug-in part; 40. Support structure; 41. Support part; 42. Reinforcement part; 421. Connecting section; 50. Installation area;

[0028] 100, box body; 200, battery cell assembly; 210, battery cell;

[0029] X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0030] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0031] like Figures 1 to 9 As shown, an embodiment of the present application provides a box body, which includes a water-cooled plate 10 and a frame 20 that are connected and arranged. Along a first direction X, the water-cooled plate 10 is arranged at the bottom of the frame 20 and defines an installation area 50 together with the frame 20. The surface of the frame 20 facing the installation area 50 has a supporting structure 40, and the supporting structure 40 includes a supporting portion 41 and a reinforcing portion 42. Along the first direction X, the height of the supporting portion 41 is greater than or equal to the height of the water-cooled plate 10. In a plane perpendicular to the first direction X, the projection of the supporting portion 41 and the projection of the water-cooled plate 10 both fall within the projection range of the installation area 50, and the reinforcing portion 42 is connected to the angle between the supporting portion 41 and the frame 20.

[0032] In a specific implementation, the box body of the embodiment of the present application includes a water-cooled plate 10 and a frame 20 that are connected and arranged. Along the first direction X, the water-cooled plate 10 is arranged at the bottom of the frame 20 and defines an installation area 50 together with the frame 20. The battery cell assembly 200 is arranged inside the installation area 50 for installation. The surface of the frame 20 facing the installation area 50 has a support structure 40. The support structure 40 includes a support portion 41 and a reinforcement portion 42. In a plane perpendicular to the first direction X, the projection of the support portion 41 and the projection of the water-cooled plate 10 both fall within the projection range of the installation area 50. When the battery cell assembly 200 is installed inside the installation area 50, it can be supported by the support portion 41 and the water-cooled plate 10, so that the battery cell assembly 200 can be stably The battery pack 200 is fixedly installed, and the height of the support part 41 is greater than or equal to the height of the water-cooled plate 10. Such an arrangement ensures that the battery cell assembly 200 will be supported by the support part 41 during installation. The support part 41 can bear a part of the weight of the battery cell assembly 200, avoiding that all the weight of the battery cell assembly 200 is concentrated on the water-cooled plate 10. During the long-term operation of the battery pack, the risk of cracking of the water-cooled plate 10 is reduced, and the fatigue life of the water-cooled plate 10 is extended. Moreover, the reinforcement part 42 of the support structure 40 is connected to the angle between the support part 41 and the frame 20, which increases the connection stability of the support part 41, ensures the installation stability of the battery cell assembly 200 installed in the installation area 50, and ensures the overall stability of the box body 100.

[0033] Specifically, along the second direction Y, the length of the support portion 41 is greater than or equal to one tenth of the overall length of the battery cell assembly 200 , so that it can be ensured that the support portion 41 has a sufficiently stable supporting effect on the battery cell assembly 200 .

[0034] like Figure 1 and Figure 5 As shown, the box body of an embodiment of the present application, wherein the box body 100 also includes a support beam assembly 30, the support beam assembly 30 is arranged in the installation area 50 and connected to the inner surface of the frame 20, and the surface of the support beam assembly 30 facing the frame 20 is provided with a support structure 40, and the reinforcement portion 42 of the support structure 40 is connected to the angle between the support portion 41 and the support beam assembly 30.

[0035] During specific implementation, the support beam assembly 30 is arranged in the installation area 50 and connected to the frame 20, so as to support the frame 20 and improve the strength of the box 100, and the support beam assembly 30 can divide the installation area 50 into multiple blocks, so that the volume of the battery cell assembly 200 installed in each installation area 50 is smaller, and the support beam assembly 30 also has a support structure 40. The support structure 40 of the support beam assembly 30 and the support structure 40 of the corresponding frame 20 can simultaneously support the smaller battery cell assembly 200, thereby ensuring the installation stability of the battery cell assembly 200 installed in the installation area 50 and ensuring the overall stability of the box 100.

[0036] Specifically, the frame 20 and the support beam assembly 30 are made of high-strength aluminum profile 6061, both of which are formed by aluminum extrusion and have a hollow structure inside; the water-cooling plate 10 is made of aluminum alloy 3003 core material, the solder layer is 4 series alloy, and the sacrificial layer is 7 series aluminum alloy.

[0037] like Figure 1 and Figure 5 As shown, a box body of an embodiment of the present application, wherein the support beam assembly 30 includes at least one transverse beam 31 extending along a second direction Y and at least one longitudinal beam 32 extending along a third direction Z, the extension length of the longitudinal beam 32 is greater than the extension length of the transverse beam 31, and the support structure 40 is connected to the two side surfaces of the longitudinal beam 32 facing the installation area 50.

[0038] In a specific implementation, the provision of at least one transverse beam 31 and at least one longitudinal beam 32 can enhance the overall stability of the box body 100 in its transverse and longitudinal directions, and the support structure 40 is provided on the longitudinal beam 32 with a longer length, which can provide more stable support for the battery cell assembly 200 and reduce the weight of the battery cell assembly 200 acting on the water cooling plate 10.

[0039] like Figure 1 , Figure 2 and Figure 5 As shown, the box body of the embodiment of the present application, wherein the reinforcing portion 42 includes a plurality of connecting segments 421 connected at preset angles, adjacent connecting segments 421 are fixedly connected, and the connecting segments 421 at both ends are fixedly connected to the frame 20 and the supporting portion 41 respectively, and the reinforcing portion 42, the frame 20 and the supporting portion 41 together enclose a hollow frame structure inside.

[0040] In a specific implementation, the support of the fixedly connected connecting section 421 can improve the connection strength between the frame 20 and the support portion 41 or between the longitudinal beam 32 and the support portion 41, thereby preventing the support portion 41 from bending or breaking when the weight of the battery cell assembly 200 acts on the support portion 41. In addition, the reinforcing portion 42, the frame 20 and the support portion 41 together form an internal hollow frame structure with a lighter weight. While ensuring the connection strength between the frame 20 and the support portion 41, the overall weight of the box can be reduced.

[0041] Alternatively, if Figure 7 As shown, Figure 7 This is a schematic structural diagram of another embodiment of the second frame of the box body of the embodiment of the present application, wherein the interior of the frame structure has a plurality of spaced-apart reinforcing members so that the support portion 41 will not break when supporting the battery cell assembly 200.

[0042] like Fig. 9As shown, a box body of an embodiment of the present application, wherein a connecting section 421 close to the installation area 50 is extended along a first direction X, and in a plane perpendicular to the first direction X, a projection of the reinforcing portion 42 is outside the projection range of the installation area 50, and a preset gap is provided between the connecting section 421 close to the installation area 50 and the installation area 50.

[0043] In a specific implementation, the battery cell assembly 200 is connected to the support portion 41 by means of structural adhesive, and a preset gap is set between the connecting section 421 near the installation area 50 and the installation area 50. The amount of the overflowed adhesive can be judged according to the height of the structural adhesive overflowing into the preset gap during the bonding process, thereby avoiding leakage of the structural adhesive. Moreover, the overflowed structural adhesive is filled in the preset gap, and the connecting section 421 and the side wall of the battery cell assembly 200 can be bonded, thereby increasing the installation stability of the battery cell assembly 200 in the installation area 50.

[0044] like Figure 1 As shown, a box body of an embodiment of the present application, wherein the frame 20 includes two first frames 21 and two second frames 22, the two first frames 21 are arranged at intervals and are parallel to the cross beam 31, the two second frames 22 are arranged at intervals and are parallel to the longitudinal beam 32, the second frame 22 includes a first connection portion 221 and a second connection portion 222 connected along a second direction Y, the support structure 40 is connected to a side of the second connection portion 222 away from the first connection portion 221, the upper surface of the first connection portion 221 is provided with a first mounting point 223 for connecting to a frame of a vehicle, and the upper surface of the second connection portion 222 is provided with a connection point 224 for connecting to an upper cover of a battery pack.

[0045] During specific implementation, the first frame 21 is arranged parallel to the cross beam 31, and the second frame 22 is arranged parallel to the longitudinal beam 32, so that the two first frames 21 and the two second frames 22 together form a rectangular frame, and a first mounting point 223 is arranged on the upper surface of the first connecting portion 221 of the second frame 22, so that the box 100 can be mounted on the bottom of the frame, and a connecting point 224 is arranged on the upper surface of the second connecting portion 222 of the second frame 22, so that the upper cover can be connected, so that the upper cover is arranged on the box 100 to protect the internal battery cell assembly 200, and the length of the second frame 22 is the same as the length of the longitudinal beam 32, which is greater than the length of the first frame 21, thereby increasing the connection stability between the first mounting point 223 and the frame and the connection stability between the connecting point 224 and the upper cover.

[0046] The box body of the embodiment of the present application, wherein the first connecting portion 221 has at least one first reinforcing rib 2211 and at least one second reinforcing rib 2212 arranged vertically therein, the first reinforcing rib 2211 and the second reinforcing rib 2212 are connected to each other, and the second connecting portion 222 has a plurality of third reinforcing ribs 2221 arranged at intervals along the height direction of the box body 100.

[0047] During specific implementation, the first reinforcing rib 2211 and the second reinforcing rib 2212 in the first connecting portion 221 support the first connecting portion 221 in two directions, thereby ensuring the cavity strength of the first connecting portion 221. When the first connecting portion 221 is mounted on the frame through the first mounting point 223, it can withstand the entire weight of the box body 100; the multiple third reinforcing ribs 2221 spaced apart in the second connecting portion 222 can enhance the cavity strength of the second connecting portion 222, thereby providing sufficient supporting strength when the second connecting portion 222 is connected to the upper cover through the connecting point 224.

[0048] Specifically, Figure 2 As shown, a fourth reinforcing rib 225 is further provided at the angle between the first connecting portion 221 and the second connecting portion 222. One end of the fourth reinforcing rib 225 is connected to the first connecting portion 221, and the other end is connected to the second connecting portion 222, which can ensure the connection strength between the first connecting portion 221 and the second connecting portion 222 and avoid bending of the first connecting portion 221 when mounted on the frame.

[0049] like Figure 1 and Figure 8 As shown, the box body of the embodiment of the present application, wherein the cross beam 31 has a first plug-in portion 311 and a plurality of second mounting points 312, the longitudinal beam 32 has a second plug-in portion 321, the first plug-in portion 311 and the second plug-in portion 321 are arranged relative to each other and connected by plug-in fitting; the surface of the water-cooling plate 10 has a plurality of connecting holes 11, the plurality of connecting holes 11 and the plurality of second mounting points 312 are arranged relative to each other, the plurality of connecting holes 11 and the plurality of second mounting points 312 are connected to the frame of the vehicle through a plurality of connecting members, and the connecting members are sequentially penetrated through the corresponding second mounting points 312 and the corresponding connecting holes 11.

[0050] During specific implementation, the cross beam 31 and the longitudinal beam 32 are plugged together through the first plug-in portion 311 and the second plug-in portion 321, which can facilitate the installation of the box body 100 and also ensure the connection stability between the cross beam 31 and the longitudinal beam 32; the connecting parts are sequentially passed through the corresponding second mounting points 312 and the corresponding connecting holes 11, and the cross beam 31 can be mounted on the frame through the second mounting point 312. At the same time, the water-cooling plate 10 can also be stably connected to the cross beam 31 through the connecting hole 11, thereby ensuring the connection stability between the water-cooling plate 10, the cross beam 31 and the frame.

[0051] Specifically, the plug-in fitting manner between the first plug-in portion 311 and the second plug-in portion 321 is a mortise and tenon fitting, which enhances the stability of the first plug-in portion 311 and the second plug-in portion 321 when connected.

[0052] Specifically, the water cooling plate 10 is connected to the longitudinal beam 32, the first frame 21 and the second frame 22 by rotary tapping and riveting. Such a connection method can better control the flatness of the water cooling plate 10, thereby ensuring that it can fully contact with the battery cell assembly 200 and achieve a better cooling effect.

[0053] The embodiment of the present application also provides a battery pack, which includes the above-mentioned box body, the battery pack also includes a battery cell assembly 200, an upper cover and a lower cover, the battery cell assembly 200 is arranged in the installation area 50, the battery cell assembly 200 includes a plurality of battery cells 210, and the two ends of each battery cell 210 along the second direction Y are respectively mounted on the support structure 40 of the frame 20 and the support structure 40 of the longitudinal beam 32, the upper cover is arranged on the top of the battery cell assembly 200 and connected to the frame 20, and the lower cover is arranged on the bottom of the water cooling plate 10.

[0054] An embodiment of the present application also provides a vehicle, which includes the above-mentioned battery pack, and the vehicle also includes a frame, and the battery pack is installed on the frame.

[0055] In a specific implementation, the vehicle includes a battery pack, the battery pack includes a box body, the box body includes a water-cooling plate 10 and a frame 20 that are connected and arranged. Along a first direction X, the water-cooling plate 10 is arranged at the bottom of the frame 20 and defines an installation area 50 together with the frame 20. The battery cell assembly 200 is arranged inside the installation area 50 for installation. The surface of the frame 20 facing the installation area 50 has a support structure 40, and the support structure 40 includes a support portion 41 and a reinforcement portion 42. In a plane perpendicular to the first direction X, the projection of the support portion 41 and the projection of the water-cooling plate 10 both fall within the projection range of the installation area 50. When the battery cell assembly 200 is installed inside the installation area 50, it can be supported by the support portion. 41 and the water-cooling plate 10, so that the battery cell assembly 200 can be stably installed, and the height of the support part 41 is greater than or equal to the height of the water-cooling plate 10. This arrangement ensures that the battery cell assembly 200 will be supported by the support part 41 during installation. The support part 41 can bear a part of the weight of the battery cell assembly 200, avoiding that all the weight of the battery cell assembly 200 is concentrated on the water-cooling plate 10, and the reinforcement part 42 of the support structure 40 is connected to the angle between the support part 41 and the frame 20, which increases the connection stability of the support part 41, ensures the installation stability of the battery cell assembly 200 installed in the installation area 50, and ensures the overall stability of the box body 100.

[0056] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0057] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

Claims

1. A box, characterized in that: The invention comprises a water-cooling plate (10) and a frame (20) which are connected and arranged. Along a first direction (X), the water-cooling plate (10) is arranged at the bottom of the frame (20) and defines an installation area (50) together with the frame (20). The surface of the frame (20) facing the installation area (50) has a support structure (40). The support structure (40) comprises a support portion (41) and a reinforcement portion (42). Along the first direction (X), the height of the support portion (41) is greater than or equal to the height of the water-cooling plate (10). In a plane perpendicular to the first direction (X), the projection of the support portion (41) and the projection of the water-cooling plate (10) both fall within the projection range of the installation area (50). The reinforcement portion (42) is connected to the angle between the support portion (41) and the frame (20).

2. The box according to claim 1, characterized in that: The box body (100) further comprises a support beam assembly (30), wherein the support beam assembly (30) is arranged in the installation area (50) and connected to the inner surface of the frame (20), the surface of the support beam assembly (30) facing the frame (20) is provided with the support structure (40), and the reinforcement portion (42) of the support structure (40) is connected to the angle between the support portion (41) and the support beam assembly (30).

3. The box according to claim 2, characterized in that: The support beam assembly (30) comprises at least one transverse beam (31) extending along a second direction (Y) and at least one longitudinal beam (32) extending along a third direction (Z), wherein the extension length of the longitudinal beam (32) is greater than the extension length of the transverse beam (31), and the support structure (40) is connected to two side surfaces of the longitudinal beam (32) facing the installation area (50).

4. The box according to claim 1, characterized in that: The reinforcing portion (42) comprises a plurality of connecting segments (421) connected at a preset angle, adjacent connecting segments (421) are fixedly connected to each other, and the connecting segments (421) at both ends are respectively fixedly connected to the frame (20) and the supporting portion (41), and the reinforcing portion (42), the frame (20) and the supporting portion (41) are jointly enclosed to form an internal hollow frame structure.

5. The box according to claim 4, characterized in that: The connecting section (421) close to the installation area (50) is extended along the first direction (X); in a plane perpendicular to the first direction (X), the projection of the reinforcing portion (42) is outside the projection range of the installation area (50); and there is a preset gap between the connecting section (421) close to the installation area (50) and the installation area (50).

6. The box according to claim 3, characterized in that: The frame (20) comprises two first frames (21) and two second frames (22); the two first frames (21) are arranged at intervals and are parallel to the cross beam (31); the two second frames (22) are arranged at intervals and are parallel to the longitudinal beam (32); the second frame (22) comprises a first connecting portion (221) and a second connecting portion (222) connected along the second direction (Y); the support structure (40) is connected to a side of the second connecting portion (222) away from the first connecting portion (221); the upper surface of the first connecting portion (221) is provided with a first mounting point (223) for connecting to a frame of a vehicle; the upper surface of the second connecting portion (222) is provided with a connecting point (224) for connecting to an upper cover of a battery pack.

7. The box according to claim 6, characterized in that: The first connecting portion (221) has at least one first reinforcing rib (2211) and at least one second reinforcing rib (2212) arranged perpendicularly to each other, the first reinforcing rib (2211) and the second reinforcing rib (2212) are connected to each other, and the second connecting portion (222) has a plurality of third reinforcing ribs (2221) arranged at intervals along the height direction of the box body (100).

8. The box according to claim 3, characterized in that: The cross beam (31) has a first plug-in portion (311) and a plurality of second mounting points (312), the longitudinal beam (32) has a second plug-in portion (321), the first plug-in portion (311) and the second plug-in portion (321) are arranged relative to each other and connected by plug-in fitting; the surface of the water-cooling plate (10) has a plurality of connecting holes (11), the plurality of connecting holes (11) and the plurality of second mounting points (312) are arranged relative to each other, the plurality of connecting holes (11) and the plurality of second mounting points (312) are connected to a vehicle frame via a plurality of connecting members, the connecting members are sequentially inserted through the corresponding second mounting points (312) and the corresponding connecting holes (11).

9. A battery pack, characterized in that: A box body comprising any one of claims 1 to 8, wherein the battery pack further comprises a battery cell assembly (200), an upper cover and a lower cover, wherein the battery cell assembly (200) is arranged in the installation area (50), and the battery cell assembly (200) comprises a plurality of battery cells (210), and both ends of each of the battery cells (210) along the second direction (Y) are respectively mounted on the support structure (40) of the frame (20) and the support structure (40) of the longitudinal beam (32), the upper cover is arranged on the top of the battery cell assembly (200) and connected to the frame (20), and the lower cover is arranged on the bottom of the water cooling plate (10).

10. A vehicle, characterized in that: Including the battery pack as described in claim 9, the vehicle also includes a frame, and the battery pack is installed on the frame.

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