CN222440738U - Battery box and vehicle - Google Patents

Abstract

The utility model relates to the technical field of vehicle parts, and provides a battery box and a vehicle, wherein the battery box includes a frame, a cold plate assembly and an integrally formed shell, wherein the frame is located in the external space of the shell, the cold plate assembly is located in the internal space of the shell, the shell includes a bottom wall and a side wall arranged around the bottom wall, the frame is arranged along the circumference of the shell and connected to the side wall of the shell, and the cold plate assembly is connected to the bottom wall and the side wall of the shell. In this way, by arranging the shell of the battery box to be integrally formed, it is possible to achieve sealing and ensure the reliability of sealing, and it is also possible to reduce the difficulty of achieving sealing, reduce welding operations and the demand for assembly stations such as welding stations, and improve the convenience of battery box assembly, so that the battery box has the characteristics of good sealing, simple assembly, less time consumption, less demand for assembly stations, and low manufacturing cost.

Description

Battery box and vehicle

Technical Field

The utility model relates to the technical field of vehicle parts, in particular to a battery box and a vehicle.

Background

The power battery is an important component of the new energy automobile and is used for providing running power for the new energy automobile. The conventional power battery mainly comprises a battery module, a battery box and a bottom guard plate, wherein the battery box and the bottom guard plate are connected by bolts generally, a frame of the battery box is mainly formed by assembling and welding frames of extruded aluminum profiles or rolled steel profiles, the frames and a cold plate (or a bottom plate) are connected in a sealing manner by FSW (Friction STIR WELDING, namely friction stir welding) or FDS (Flow DRILL SCREW, namely Flow riveting) to form a shell, and meanwhile, the extruded aluminum profiles or the rolled steel profiles are adopted as internal cross beams and longitudinal beams for fixing other elements.

At present, most of the components of the battery box body are usually connected and fastened in a welding mode or in a mode of riveting and bolting by adopting castings and rivets. For the welding mode, the battery box body is in heavy load and vibration working conditions for a long time, so that the welding part of the battery box body is easy to fatigue crack, and the reliability is low. For the mode of casting, rivet riveting and bolt connection, although the connection reliability is high, the assembly process is complex, the consumed working hours are long, the precision requirement is high, and the manufacturing cost is high.

Disclosure of utility model

The utility model solves the problem of improving the convenience of assembling the battery box under the condition of ensuring the reliability of connection among all the component parts of the battery box.

In order to solve the above problems, the present utility model provides a battery box, including a frame, a cold plate assembly and an integrally formed housing, wherein the frame is located in an external space of the housing, the cold plate assembly is located in an internal space of the housing, the housing includes a bottom wall and a side wall disposed around the bottom wall, the frame is disposed along a circumferential direction of the housing and is connected to the side wall of the housing, and the cold plate assembly is connected to the bottom wall and the side wall of the housing.

Optionally, the cold plate subassembly includes first stiffening beam, second stiffening beam and cold plate, the cold plate connect in the diapire of casing with the lateral wall, first stiffening beam with the crisscross setting of second stiffening beam, and connect in respectively the cold plate back of the body in one side of diapire.

Optionally, the cold plate comprises a flat part and a bending part, the flat part and the bottom wall are arranged in parallel, the bending parts are oppositely arranged at two ends of the flat part, the second reinforcing beam is positioned between the two bending parts, a first connecting hole is formed in the flat part, the middle part of the second reinforcing beam and the flat part are connected at the first connecting hole through a fastener, and/or a second connecting hole is formed in the bending part, and two ends of the second reinforcing beam are respectively connected with the corresponding bending parts at the second connecting hole through fasteners.

Optionally, the cold plate includes first runner sheet layer, second runner sheet layer that piles up the setting in proper order, first runner sheet layer connect in the diapire of casing, first stiffening beam with the second stiffening beam connect respectively in the sheet layer.

Optionally, when the first connecting hole is formed in the flattening portion, the first connecting hole penetrates through the first flow channel plate layer, the second flow channel plate layer and the flat plate layer, and when the second connecting hole is formed in the bending portion, the second connecting hole penetrates through the second flow channel plate layer and the flat plate layer.

Optionally, the first reinforcing beam is connected with the second reinforcing beam through a mortise and tenon structure.

Optionally, the battery case further includes a cushion pad disposed between the cold plate and the bottom wall of the case.

Optionally, the first stiffening beam, the second stiffening beam and the cold plate enclose a plurality of cavities, the blotter with the cavity one-to-one sets up.

Optionally, a side of the bottom wall of the housing facing away from the cold plate assembly is provided with a resin layer and/or the rim is welded to the side wall of the housing.

In order to solve the above problems, the present utility model also provides a vehicle including the battery case as described above.

Compared with the prior art, the utility model has the following beneficial effects:

According to the battery box body, the frame is arranged along the circumferential direction of the shell, the frame is connected to the side wall of the shell in a welding mode, the cold plate assembly is placed on the bottom wall of the shell, and the cold plate assembly is connected to the bottom wall and the side wall of the shell in a welding mode, so that the battery box body is assembled, and connection reliability among all components of the battery box body is guaranteed. Meanwhile, the shell is integrally formed, so that the adjacent side walls and the bottom wall and the side walls of the shell are in seamless connection, sealing can be achieved, sealing reliability can be guaranteed, and compared with the prior art that the frame and the cold plate are sealed through welding to form a shell structure, sealing difficulty can be reduced, welding operation and requirements on assembly stations such as a welding station are reduced, convenience in assembling the battery box is improved, and the battery box has the advantages of being good in sealing performance, simple in assembling, less in labor hour consumption, less in requirements on the assembly station, low in manufacturing cost and the like.

Drawings

Fig. 1 is a schematic structural diagram of a battery case according to an embodiment of the present utility model;

fig. 2 is a schematic diagram of an assembly structure of a battery case according to an embodiment of the present utility model;

FIG. 3 is a schematic view showing a cold plate assembly assembled inside a housing according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a cold plate assembly, a housing, and a cushion according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a cold plate assembly according to an embodiment of the present utility model;

FIG. 6 is a schematic view of a cold plate according to an embodiment of the present utility model;

FIG. 7 is a schematic structural view of a first reinforcing beam and a second reinforcing beam according to an embodiment of the present utility model;

Fig. 8 is a schematic view showing a partial structure of a cold plate at a second connecting hole according to an embodiment of the present utility model.

Reference numerals illustrate:

1. The cooling plate comprises a frame, a cooling plate assembly, a first reinforcing beam, a second reinforcing beam, a mortise, a cold plate, a cooling plate, a flat part, a 2311, a first connecting hole, a 232, a bending part, a 2321, a second connecting hole, a 233, a first flow channel plate layer, a 234, a second flow channel plate layer, a 235, a flat plate layer, a 24, a cavity, a 25, a third reinforcing beam, a 3, a shell, a 31, a bottom wall, a 32, a side wall, a4, a buffer pad, a 5 and a cooling pipeline.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

The Z-axis in the drawing indicates a vertical direction, that is, an up-down position, and the forward direction of the Z-axis indicates an up direction, and the reverse direction of the Z-axis indicates a down direction, the X-axis in the drawing indicates a horizontal direction and is designated as a front-rear position, and the forward direction of the X-axis indicates a front side, and the reverse direction of the X-axis indicates a rear side, and the Y-axis in the drawing indicates a left-right position, and the forward direction of the Y-axis indicates a left side, and the reverse direction of the Y-axis indicates a right side. It should also be noted that the foregoing Z-axis, Y-axis, and X-axis are meant to be illustrative only and not indicative or implying that the apparatus or component in question must be oriented, configured or operated in a particular orientation, and therefore should not be construed as limiting the utility model.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein.

Referring to fig. 1 and 2, an embodiment of the present utility model provides a battery box, which includes a frame 1, a cold plate assembly 2 and an integrally formed housing 3, wherein the frame 1 is located in an outer space of the housing 3, the cold plate assembly 2 is located in an inner space of the housing 3, the housing 3 includes a bottom wall 31 and a side wall 32 disposed around the bottom wall 31, the frame 1 is disposed along a circumferential direction of the housing 3 and is connected to the side wall 32 of the housing 3, and the cold plate assembly 2 is connected to the bottom wall 31 and the side wall 32 of the housing 3.

Specifically, the case 3 of the battery case is generally a hollow rectangular parallelepiped structure having an open upper end, and is generally formed by integrally punching a plate material such as a high-strength steel plate. The frame 1 is usually a rolled steel profile, which may be arranged around the side wall 32 of the housing 3 in a complete circle, wherein the frame 1 is in a closed ring-shaped structure, and the frame 1 may also be arranged around a part of the side wall 32 of the housing 3, wherein the frame 1 is in a ring-shaped structure with a notch, as shown in fig. 2. In addition, the side walls 32 of the frame 1 and the casing 3 are usually welded to form a fixed connection, so that the frame 1 and the casing 3 are connected into a whole, and the rigidity of the battery box is improved. The cold plate assembly 2 is arranged in the shell 3 and placed on the bottom wall 31 of the shell 3, and meanwhile, the cold plate assembly 2 and the side wall 32 of the shell 3 are fixedly connected in a welding mode, so that the cold plate assembly 2 and the shell 3 are connected into a whole, and the rigidity of the battery box is improved.

The battery box in this embodiment may be assembled by arranging the frame 1 along the circumferential direction of the housing 3 and connecting the frame to the side wall 32 of the housing 3 by, for example, welding, placing the cold plate assembly 2 on the bottom wall 31 of the housing 3 and connecting the frame to the side wall 32 of the housing 3 by, for example, welding, so as to ensure reliable connection between the constituent components of the battery box. Meanwhile, through setting the shell 3 as integrated into one piece for between for example adjacent lateral wall 32 and between diapire 31 and the lateral wall 32 of shell 3 be seamless connection, in this way, both can realize sealedly, can guarantee sealed reliability again, moreover, compare with the frame and cold plate in order to form shell structure by the welding in the prior art, can also reduce the degree of difficulty that realizes sealedly, reduce welding operation and the demand to assembly stations such as welding station, improve the convenience of battery box equipment, make the battery box in this embodiment have that the leakproofness is good, the assembly is simple, consume man-hour less, to assembly station demand less, low in manufacturing cost etc. characteristics. In addition, since the cold plate 23 in the cold plate assembly 2 is not required to provide a seal for the battery case, for example, the size of the cold plate 23 may be controlled to the mounting region of the battery module, so that the volume and weight of the cold plate 23 may be reduced, and the manufacturing cost of the cold plate 23 may be reduced.

Optionally, the side of the bottom wall 31 of the housing 3 facing away from the cold plate assembly 2 is provided with a resin layer.

Because the battery box body is connected with the bottom guard plate of the power battery through bolts, a large number of riveting nuts (also called blind riveting nuts) are needed to be added on the battery box body, so that the weight of the battery box body is large, the cost is high, and the time is long. In this embodiment, a resin layer such as polyvinyl chloride (Polyvinyl Chloride, abbreviated as PVC in english) is sprayed on the outer surface of the bottom wall 31 of the housing 3 (i.e., the surface of the bottom wall 31 facing away from the cold plate assembly 2), so that the bottom of the housing 3 has higher rigidity and higher corrosion resistance. In this way, the bottom wall 31 of the shell 3 can be used for replacing the bottom guard plate of the power battery, so that the battery box body can meet the bottom protection of the power battery by using the shell 3, the production process of the power battery is simplified to a great extent, and the bottom guard plate is not required to be arranged and installed independently, which is equivalent to the fact that the bottom guard plate, the sealing gasket and related fasteners can be omitted, so that the material types, the working hours and the cost can be reduced, and the whole weight of the power battery can be effectively reduced.

Alternatively, as shown in connection with fig. 3, the cold plate assembly 2 includes a first reinforcing beam 21, a second reinforcing beam 22 and a cold plate 23, the cold plate 23 is connected to a bottom wall 31 and a side wall 32 of the housing 3, and the first reinforcing beam 21 and the second reinforcing beam 22 are staggered and connected to sides of the cold plate 23 facing away from the bottom wall 31 of the housing 3, respectively.

In this embodiment, the first reinforcing beam 21 and the second reinforcing beam 22 are typically rolled steel profiles and are disposed in an intersecting manner, that is, the first reinforcing beam 21 and the second reinforcing beam 22 may be perpendicular to each other on a horizontal plane (i.e., XY plane in fig. 1), or may form an acute angle or an obtuse angle. In practical applications, the first reinforcement beam 21 is generally disposed along a longitudinal direction, i.e. along an X-axis direction in fig. 1, and the second reinforcement beam 22 is generally disposed along a transverse direction, i.e. along a Y-axis direction in fig. 1, i.e. the first reinforcement beam 21 and the second reinforcement beam 22 are disposed vertically. The first reinforcement beam 21 and the second reinforcement beam 22 may be provided with one or more, for example, as shown in fig. 3, one first reinforcement beam 21 and three second reinforcement beams 22 are provided, and the three second reinforcement beams 22 are respectively connected to both ends and the middle position of the first reinforcement beam 21 to form a "king" shaped structure. The shape of the cold plate 23 is generally the same as the shape of the bottom wall 31 of the housing 3, and the size of the cold plate 23 may be equal to the size of the bottom wall 31 or smaller than the size of the bottom wall 31, and may be set as required in practical applications. Further, the first reinforcement beam 21 and the cold plate 23 are typically connected by welding, and the second reinforcement beam 22 and the cold plate 23 are typically riveted by rivets.

In this way, the first reinforcing beam 21 and the second reinforcing beam 22 are arranged on one side, which is far away from the bottom wall 31 of the shell 3, of the cold plate 23, and the first reinforcing beam 21 and the second reinforcing beam 22 are arranged in a staggered manner, so that the area for accommodating the battery module is formed in the battery box body by using the first reinforcing beam 21 and the second reinforcing beam 22, the functions of improving the strength, the rigidity and fixing the cold plate 23 are achieved, and the reliability of the battery module when the battery module is installed in the battery box body is ensured. In addition, through adopting the welding between first stiffening beam 21 and the cold plate 23 and adopting the rivet riveting between second stiffening beam 22 and the cold plate 23 for only need can realize equipment and seal through ordinary punching press, welding, rivet between each component part of battery box, thereby can simplify the production technology of battery box, reduce the requirement of battery box to assembly fixture to a great extent, reduce the demand of battery box to assembly station, reduce assembly man-hour, reduce manufacturing cost when improving sealed reliability.

Further, as shown in fig. 3, the cold plate 23 has a first end and a second end along a set direction, the first reinforcement beam 21 extends from the first end to the second end of the cold plate 23, and two ends of the first reinforcement beam 21 are respectively connected with the second reinforcement beam 22, and two ends of the second reinforcement beam 22 are respectively connected with the opposite side walls 32 of the housing 3.

In this embodiment, the setting direction is generally the X-axis direction in fig. 1, that is, the front-rear direction, that is, the first end and the second end of the cold plate 23 are the front end and the rear end of the cold plate 23, respectively. The first reinforcement beam 21 generally extends from the front end to the rear end of the cold plate 23, and one second reinforcement beam 22 is connected to each of the front end and the rear end of the first reinforcement beam 21. In this way, the reinforcement range of the first reinforcement beam 21 is increased by extending the first reinforcement beam 21 from the first end to the second end of the cold plate 23, so that the rigidity of the cold plate 23 is further improved, and the two ends of the second reinforcement beam 22 are respectively connected to the opposite side walls 32 of the housing 3 by, for example, welding, so that the second reinforcement beam 22 and the housing 3 are integrally connected, so that the overall structural strength of the battery case is further improved.

Further, as shown in connection with fig. 1, the cold plate assembly 2 further comprises a third reinforcement beam 25, one end of the third reinforcement beam 25 being connected to the side wall 32 of the housing 3, and the other end being connected to the second reinforcement beam 22 at the first or second end of the cold plate 23.

In this embodiment, the size of the cold plate 23 is smaller than the size of the bottom wall 31 of the housing 3, that is, the rear end of the cold plate 23 abuts against the rear side wall of the housing 3, and a space is provided between the front end of the cold plate 23 and the front side wall of the housing 3. The third reinforcement beam 25 is provided in parallel with the second reinforcement beam 22, and the second reinforcement beam 22 at the rear end of the cold plate 23 is welded to the rear side wall of the housing 3, and the second reinforcement beam 22 at the front end of the cold plate 23 is welded to the rear end of the third reinforcement beam 25, and the front end of the third reinforcement beam 25 is welded to the front side wall of the housing 3. In this way, when the size of the cold plate 23 is smaller than the size of the bottom wall 31 of the housing 3, the third reinforcing beam 25 can be added between the cold plate 23 and the side wall 32 of the housing 3 to further improve the reliability of the connection between the cold plate assembly 2 and the housing 3, thereby further improving the overall structural strength of the battery case.

Alternatively, as shown in fig. 4, 5 and 6, the cold plate 23 includes a flat portion 231 and a bending portion 232, the flat portion 231 is disposed parallel to the bottom wall 31, the bending portion 232 is disposed at two ends of the flat portion 231, the second reinforcing beam 22 is disposed between the two bending portions 232, the flat portion 231 is provided with a first connecting hole 2311, a middle portion of the second reinforcing beam 22 is connected with the flat portion 231 at the first connecting hole 2311 through a fastener, and/or the bending portion 232 is provided with a second connecting hole 2321, and two ends of the second reinforcing beam 22 are respectively connected with the corresponding bending portion 232 at the second connecting hole 2321 through a fastener.

In the present embodiment, the left and right ends of the cold plate 23 are bent upward to form bent portions 232, and the second reinforcing beam 22 extends from the left end to the right end of the flat portion 231. The non-flow path region around and in the middle of the flat portion 231 is provided with a first connection hole 2311 and/or the bent portion 232 is provided with a second connection hole 2321. At the time of assembly, the flat portion 231 of the cold plate 23 and the second reinforcing beam 22 are riveted as a whole by passing a fastener such as a rivet through the first connection hole 2311, and/or the bent portion 232 of the cold plate 23 and the second reinforcing beam 22 are riveted as a whole by passing a fastener such as a rivet through the second connection hole 2321, thus achieving a rivet assembly between the second reinforcing beam 22 and the cold plate 23 with firm connection and high reliability. Further, by providing the bending portion 232 on the cold plate 23, not only the rigidity of the cold plate 23 but also the connection area between the cold plate 23 and the case 3 can be increased, and the connection reliability can be improved.

Alternatively, as shown in fig. 4 and 8, the cold plate 23 includes a first flow path plate layer 233, a second flow path plate layer 234, and a plate layer 235 stacked in this order, the first flow path plate layer 233 being connected to the bottom wall 31 of the housing 3, and the first reinforcement beam 21 and the second reinforcement beam 22 being connected to the plate layer 235, respectively.

In this embodiment, the cold plate 23 is generally a steel-aluminum composite structure, that is, the cold plate 23 is formed by stacking steel plate layers and aluminum plate layers in sequence, and the sizes and shapes of the steel plate layers and the aluminum plate layers are the same, wherein the first flow channel plate layer 233 is a steel plate layer, the second flow channel plate layer 234 and the plate layer 235 are aluminum plate layers, and the first flow channel plate layer 233 and the second flow channel plate layer 234 are stacked in sequence from bottom to top, meanwhile, flow channels for flowing cooling liquid are arranged in the first flow channel plate layer 233 and the second flow channel plate layer 234, and no flow channel is arranged on the plate layer 235. In this way, the cold plate 23 is configured to be formed by stacking the first flow channel plate layer 233, the second flow channel plate layer 234 and the plate layer 235 in order to manufacture the cold plate 23 in a steel-aluminum composite structure, so that the cold plate 23 itself has high rigidity while achieving a cooling function by using the first flow channel plate layer 233 and the second flow channel plate layer 234.

Alternatively, as shown in fig. 5, 6 and 8, when the first connection hole 2311 is provided in the flat portion 231, the first connection hole 2311 penetrates the first flow path slab 233, the second flow path slab 234 and the slab 235, and when the second connection hole 2321 is provided in the bent portion 232, the second connection hole 2321 penetrates the second flow path slab 234 and the slab 235.

In this embodiment, the first connection hole 2311 on the flat portion 231 penetrates through the entire cold plate 23, that is, the first connection hole 2311 has a through hole structure, so that the middle position of the second reinforcement beam 22 and the cold plate 23 are riveted by rivets under the flat portion 231. The second connection hole 2321 on the bending part 232 only penetrates through the aluminum plate layer of the cold plate 23, namely the second flow channel plate layer 234 and the plate layer 235, but does not penetrate through the rigid plate layer, namely the first flow channel plate layer 233, that is, the second connection hole 2321 is of a blind hole structure, namely through holes coaxially arranged are formed in two aluminum plate layers of the cold plate 23, and the through holes in the two aluminum plate layers jointly form the second connection hole 2321. In this way, resistance welding is facilitated to weld the steel plate layer of the cold plate 23 with the sidewall 32 of the case 3 through the second connection hole 2321, thereby avoiding welding between steel and aluminum.

Alternatively, as shown in connection with fig. 7, the first reinforcing beam 21 and the second reinforcing beam 22 are connected by a mortise and tenon structure.

In this embodiment, as shown in fig. 7, the second reinforcement beam 22 disposed transversely is provided with a mortise 221 with a downward notch, and correspondingly, the first reinforcement beam 21 disposed longitudinally is provided with a tenon, which may be a local part in the middle of the first reinforcement beam 21, so that the tenon on the first reinforcement beam 21 is inserted into the mortise 221 by assembling the second reinforcement beam 22 from top to bottom to the local part in the middle of the first reinforcement beam 21, so as to complete the assembly. When the middle part and two ends of the first reinforcing beam 21 are respectively connected with one second reinforcing beam 22, a mortise and tenon structure may be arranged between the first reinforcing beam 21 and each second reinforcing beam 22, or a mortise and tenon structure may be arranged between the first reinforcing beam 21 and a part of the second reinforcing beams 22, for example, a mortise and tenon structure is adopted between the first reinforcing beam 21 and the second reinforcing beam 22 located at the middle position, and a welded fastening is adopted between the first reinforcing beam 21 and the second reinforcing beam 22 located at the two ends, or a mortise and tenon structure is adopted between the first reinforcing beam 21 and the second reinforcing beam 22 located at the two ends, and a welded fastening is adopted between the first reinforcing beam 21 and the second reinforcing beam 22 located at the middle position. In practical application, the design can be selected according to the needs, and the design is not particularly limited herein. Thus, the first reinforcing beam 21 and the second reinforcing beam 22 are assembled through the mortise and tenon structure, so that the assembly is simple and convenient, the labor hour is less, and the welding and the requirements on welding stations can be reduced.

Optionally, as shown in connection with fig. 4, the battery case further includes a cushion 4, the cushion 4 being disposed between the cold plate 23 and the bottom wall 31 of the housing 3.

In this embodiment, the cushion pad 4 is fixed to the bottom wall 31 of the housing 3, and is located between the cold plate 23 and the bottom wall 31. In this way, the cushion pad 4 can not only block heat transfer between the cold plate 23 and the bottom wall 31 of the housing 3 to perform a heat insulating function, but also support the cold plate 23 and the module mounted on the cold plate 23 by the cushion pad 4.

Optionally, as shown in fig. 4, the first reinforcement beam 21, the second reinforcement beam 22 and the cold plate 23 enclose a plurality of cavities 24, and the cushion pads 4 are disposed in one-to-one correspondence with the cavities 24.

In this embodiment, the cavity 24 surrounded by the first reinforcing beam 21, the second reinforcing beam 22 and the cold plate 23 is used for installing a battery module of a power battery, the number of the cushioning pads 4 is the same as that of the cavities 24, and the shape of the cushioning pads 4 is matched with that of the cavities 4, that is, the first reinforcing beam 21 and the second reinforcing beam 22 which are arranged in a staggered manner divide the flat portion 231 of the cold plate 23 into a plurality of areas (i.e. the positions corresponding to the cavities 24 on the flat portion 231), and the cushioning pads 4 are arranged corresponding to the plurality of areas. For example, as shown in fig. 4, a first reinforcing beam 21, three second reinforcing beams 22 and a cold plate 23 together enclose four rectangular cavities 24, and then the cushion pad 4 is rectangular and provided with four cushion pads 4, and at the same time, the four cushion pads 4 are respectively disposed right under the four cavities 24. Thus, the plurality of cushion pads 4 are arranged according to the positions and the number of the cavities 24 instead of the whole cushion pads 4, so that the cushion pads 4 can be prevented from shielding the first connecting holes 2311 in the middle area of the cold plate 23, or the cushion pads 4 are prevented from being provided with through hole structures coaxially arranged with the first connecting holes 2311, and convenience in assembling the battery box body is improved.

Further, as shown in fig. 2, the battery box further includes a cooling pipeline 5, a cooling liquid flow channel is arranged on the cooling plate 23, a liquid inlet connector and a liquid outlet connector are arranged on the side wall 32 of the shell 3, and the liquid inlet connector and the liquid outlet connector are respectively communicated with the cooling liquid flow channel through the cooling pipeline.

In this embodiment, the cold plate 23 is a hollow plate body structure, the inner space of the cold plate body structure forms a cooling liquid flow channel, a liquid inlet connector and a liquid outlet connector are arranged on the side wall 32 of the shell 3, and the liquid inlet connector and the liquid outlet connector are respectively communicated with the cooling liquid flow channel through cooling pipelines, so that the circulating flow of cooling liquid in the cold plate 23 is realized, and further the cooling and heat dissipation of the cold plate 23 to the battery module are realized.

Another embodiment of the present utility model provides a vehicle including the battery case as described above.

The beneficial effects of the vehicle in this embodiment compared to the prior art are the same as those of the battery case described above, and are not described here again.

Although the utility model is disclosed above, the scope of the utility model is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the utility model, and these changes and modifications will fall within the scope of the utility model.

Claims (10)

1. The utility model provides a battery box, its characterized in that includes frame (1), cold plate subassembly (2) and integrated into one piece's casing (3), frame (1) are located the outside space of casing (3), cold plate subassembly (2) are located the inside space of casing (3), casing (3) include diapire (31) and around lateral wall (32) that diapire (31) set up, frame (1) are followed the circumference setting of casing (3), and connect in lateral wall (32) of casing (3), cold plate subassembly (2) connect in diapire (31) of casing (3) with lateral wall (32).

2. The battery box according to claim 1, characterized in that the cold plate assembly (2) comprises a first stiffening beam (21), a second stiffening beam (22) and a cold plate (23), the cold plate (23) being connected to the bottom wall (31) and the side walls (32) of the housing (3), the first stiffening beam (21) and the second stiffening beam (22) being staggered and connected to a side of the cold plate (23) facing away from the bottom wall (31) of the housing (3), respectively.

3. The battery box body according to claim 2, wherein the cold plate (23) comprises a flat portion (231) and a bending portion (232), the flat portion (231) and the bottom wall (31) are arranged in parallel, the bending portion (232) is oppositely arranged at two ends of the flat portion (231), the second reinforcing beam (22) is located between the two bending portions (232), a first connecting hole (2311) is formed in the flat portion (231), the middle portion of the second reinforcing beam (22) and the flat portion (231) are connected through a fastener at the first connecting hole (2311), and/or a second connecting hole (2321) is formed in the bending portion (232), and two ends of the second reinforcing beam (22) are respectively connected with the corresponding bending portion (232) at the second connecting hole (2321) through a fastener.

4. A battery compartment according to claim 3, wherein the cold plate (23) comprises a first flow channel plate layer (233), a second flow channel plate layer (234) and a plate layer (235) stacked in sequence, the first flow channel plate layer (233) being connected to the bottom wall (31) of the housing (3), the first reinforcement beam (21) and the second reinforcement beam (22) being connected to the Ping Banceng (235), respectively.

5. The battery case according to claim 4, wherein when the first connection hole (2311) is provided in the flat portion (231), the first connection hole (2311) penetrates through the first flow path plate layer (233), the second flow path plate layer (234) and the flat plate layer (235), and when the second connection hole (2321) is provided in the bent portion (232), the second connection hole (2321) penetrates through the second flow path plate layer (234) and the flat plate layer (235).

6. The battery box according to claim 2, characterized in that the first reinforcement beam (21) and the second reinforcement beam (22) are connected by a mortise and tenon structure.

7. The battery box according to claim 2, further comprising a cushion (4), said cushion (4) being provided between said cold plate (23) and said bottom wall (31) of said housing (3).

8. The battery box according to claim 7, wherein the first reinforcement beam (21), the second reinforcement beam (22) and the cold plate (23) enclose a plurality of cavities (24), and the cushion pads (4) are disposed in one-to-one correspondence with the cavities (24).

9. Battery compartment according to claim 1, characterized in that the side of the bottom wall (31) of the housing (3) facing away from the cold plate assembly (2) is provided with a resin layer;

and/or the frame (1) is welded to the side wall (32) of the housing (3).

10. A vehicle comprising a battery compartment as claimed in any one of claims 1 to 9.