A battery box

Abstract

The application discloses a battery box, comprising a frame, a reinforcing piece and at least two battery packs. The frame is internally formed with a battery mounting space, each battery pack is arranged in the battery mounting space, and each battery pack is sequentially arranged in a horizontal direction and fixed to the frame. The reinforcing piece is arranged between two adjacent battery packs, and the reinforcing piece has two side connecting parts which are respectively extended to the two adjacent battery packs. Each side connecting part comprises two extension pieces which are connected to the corresponding battery pack. In the embodiment of the application, the reinforcing piece connects and fixes the two adjacent battery packs in the horizontal direction to form an integrated whole, the battery pack is reinforced and fixed, the concentrated stress point is avoided at the lower part of the gap between the two battery packs, the bottom structure of the frame is protected, and the service life of the battery box is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a battery box. Background Technology

[0002] In related technologies, the battery box includes a frame and multiple battery packs. The frame contains battery mounting spaces, and each battery pack is housed within it. Each battery pack is fixed to the frame and arranged sequentially. There are gaps between adjacent battery packs, and these packs are not connected. The lower edge of the gap between adjacent battery packs is a stress-concentrated point, making the bottom of the frame prone to damage and deformation, severely impacting the battery box's lifespan. For example, utility model patent application number 202121989052.8 provides a vehicle energy system with a replaceable battery box, but the adjacent battery packs are not connected, resulting in poor integration and making the frame prone to deformation.

[0003] Furthermore, battery boxes typically consist of an upper frame and a lower frame, with the battery pack positioned between the upper and lower frames. The top of the battery pack is connected to the upper frame, and the bottom is connected to the lower frame. The battery pack lacks sufficient horizontal constraint, leading to relative movement and swaying among the battery packs in the horizontal direction, which affects the overall structural stability of the battery box. Utility Model Content

[0004] To solve one of the above-mentioned technical problems, this utility model provides a battery box.

[0005] The present invention adopts the following technical solution:

[0006] A battery box, comprising:

[0007] A frame, the interior of which forms a battery mounting space;

[0008] At least two battery packs are provided, each battery pack is disposed within the battery mounting space, and each battery pack is arranged sequentially along the horizontal direction, and the battery packs are fixed to the frame;

[0009] A reinforcing member is located between two adjacent battery packs. The reinforcing member has two side connecting portions that extend to the two adjacent battery packs respectively. Each side connecting portion includes two extension pieces with an included angle between them. Each extension piece is respectively attached to and connected to the corresponding battery pack.

[0010] Optionally, the included angle between the two extension pieces of the side connection portion is an acute angle.

[0011] Optionally, the reinforcing member is sheet-shaped, and the extension trajectory of the peripheral edge of the reinforcing member is a smoothly transitioning arc.

[0012] Optionally, each of the extension pieces has a connecting hole at one end away from the center of the reinforcing member;

[0013] One end of the fastener passes through the connection hole and is connected to the battery pack, while the other end of the fastener is confined to the extension piece.

[0014] Optionally, at least two reinforcing members are provided on both sides of the battery box;

[0015] Each of the reinforcing members is arranged at intervals along the height direction of the frame.

[0016] Optionally, the frame includes a longitudinal beam disposed between the two battery packs;

[0017] The reinforcing member is connected to the longitudinal beam.

[0018] Optionally, the battery box includes a cover plate connected to the frame, the cover plate covering the battery pack, the reinforcement and the longitudinal beam.

[0019] Optionally, the sealing plate is connected to the reinforcement by fasteners.

[0020] Optionally, the side of the reinforcing member facing away from the battery pack is provided with a connecting portion, and the connecting portion has a threaded groove;

[0021] One end of the fastener passes through the sealing plate and is threaded into the threaded groove, while the other end of the fastener is confined to the sealing plate.

[0022] Optionally, the reinforcing member is a one-piece molded part.

[0023] By adopting the above technical solution, this application has the following beneficial effects:

[0024] In this embodiment, the reinforcing member connects and fixes two adjacent battery packs in the horizontal direction to form a whole, thereby strengthening and fixing the battery packs and preventing the lower edge of the gap between the two battery packs from becoming a concentrated stress point, protecting the bottom structure of the frame and extending the service life of the battery box.

[0025] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0026] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but do not constitute an undue limitation of the present invention. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0027] Figure 1 This shows a front view of the battery compartment concealment panel provided in an embodiment of this application;

[0028] Figure 2 This image shows a perspective view of the battery box provided in an embodiment of this application;

[0029] Figure 3 Show Figure 2 Enlarged view of section B in the middle;

[0030] Figure 4 This is a front view of the battery box enclosure provided in an embodiment of this application;

[0031] Figure 5 This diagram shows a state where part of the battery box cover is hidden, as provided in an embodiment of this application.

[0032] Figure 6 Show Figure 5 Enlarged view of section C;

[0033] Figure 7 This shows another perspective view of the battery box provided in the embodiment of this application;

[0034] Figure 8 Show Figure 7 Enlarged view of section D in the middle.

[0035] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0037] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] Example 1

[0040] Combination Figure 1 as well as Figure 8 As shown, this application embodiment provides a battery box 100, including: a frame 1, a reinforcing member 8, and at least two battery packs 2. A battery mounting space is formed inside the frame 1, and each battery pack 2 is disposed within the battery mounting space, with each battery pack 2 arranged sequentially in a horizontal direction. The battery packs 2 are fixed to the frame 1. The reinforcing member 8 is located between two adjacent battery packs 2, and the reinforcing member 8 has two side connecting portions, each extending to one of the two adjacent battery packs 2. Each side connecting portion includes two extension pieces 81, with an included angle between the two extension pieces 81, and each extension piece 81 is respectively attached to and connected to the corresponding battery pack 2.

[0041] In this embodiment, the reinforcing member 8 connects and fixes two adjacent battery packs 2 in the horizontal direction to form a whole, thereby strengthening and fixing the battery packs 2, avoiding the formation of concentrated stress points at the lower edge of the gap between the two battery packs 2, protecting the bottom structure of the frame 1, and extending the service life of the battery box 100.

[0042] The reinforcing member 8 of this application is X-shaped. Compared with the straight strip structure, the side connection parts on both sides of the reinforcing member 8 of this application are V-shaped structures, which have the effect of connection and fastening in both the horizontal and vertical directions. Simulation experiments have verified that the X-shaped connection structure makes the connection structure of adjacent battery packs 2 more stable and reliable.

[0043] In some possible implementations, the included angle between the two extension pieces 81 of the side connection is an acute angle. The included angle between the two extension pieces 81 of the side connection is small. When the two extension pieces 81 are respectively connected to the battery pack 2, the connection parts are close together and can cooperate to share the force, which significantly improves the connection structure strength and stability of the two adjacent battery packs 2.

[0044] In some possible implementations, the reinforcing member 8 is sheet-like, and the peripheral edge of the reinforcing member 8 extends along a smoothly transitioning arc. The entire peripheral edge of the reinforcing member 8 has no sharp or pointed structures, avoiding the formation of stress concentration points and extending the service life of the reinforcing member 8.

[0045] In some possible implementations, each extension piece 81 has a fixing hole 811 at one end away from the center of the reinforcing member 8, one end of a fastener passes through the fixing hole 811 and is connected to the battery pack 2, and the other end of the fastener is confined to the extension piece 81.

[0046] The end of the extension piece 81 is provided with a fixing hole 811, which can be easily connected to the outer shell of the battery pack 2 by a fastener. For example, the fastener can be a bolt, and the outer shell of the battery pack 2 can be provided with a threaded hole. The stud of the bolt passes through the fixing hole 811 on the extension piece 81 and is threaded to the threaded hole on the battery pack 2. The head of the bolt is confined to the surface of the extension piece 81.

[0047] In some possible implementations, at least two reinforcing members 8 are provided on both sides of the battery box 100 (both sides of the battery box 100 along the thickness direction), and the reinforcing members 8 are arranged sequentially at intervals along the height direction of the frame 1. This allows the two sides of adjacent battery packs 2 to be connected by multiple reinforcing members 8, thereby enhancing the strength of the connection structure.

[0048] In some possible implementations, the frame 1 includes a longitudinal beam 131 disposed between the two battery packs 2, and a reinforcement 8 connected to the longitudinal beam 131.

[0049] Frame 1 may further include a top frame 12, a bottom frame 11, and a middle frame 13. The middle frame 13 includes a longitudinal beam 131 and two side frames 132. The middle frame 13 is located between the top frame 12 and the bottom frame 11. The side frames 132 of the middle frame 13 are located at both ends of the bottom frame 11 along its length, and the side frames 132 are respectively connected to the top frame 12 and the bottom frame 11. The longitudinal beam 131 of the middle frame 13 is located between the two side frames 132, and each battery pack 2 is located between the longitudinal beam 131 and the side frames 132. The reinforcing member 8 is connected to the longitudinal beam 131 in the middle, thereby achieving that the top of each battery pack 2 is fixed to the top frame 12, the bottom is fixed to the bottom frame 11, and the two sides are fixed to the side frames 132 and the longitudinal beam 131 respectively, effectively fixing each side of the battery pack 2. Multiple locking grooves 1153 can be provided on the bottom frame 11 of the frame 1 for cooperating with the locking mechanism. The locking tongue of the locking mechanism can be inserted into the locking groove to lock the battery box.

[0050] In some possible implementations, such as Figure 4 As shown, the battery box 100 includes a cover plate 91, which is connected to the frame 1 and covers the battery pack 2, the reinforcing member 8, and the longitudinal beam 131. The cover plate 91 serves to protect the battery pack 2, the reinforcing member 8, and the longitudinal beam 131, and also has an aesthetic function.

[0051] An observation port 91a can be provided on the sealing plate 91, such as Figure 4 As shown, the observation port 91a allows for easy observation of whether the locking mechanism's bolt and battery box are properly engaged. Furthermore, in the event of a bolt failure to retract, the observation port allows for easy application of external force to the bolt using an external structure to release the bolt from its lock.

[0052] In some possible implementations, the sealing plate 91 is connected to the reinforcement 8 by fasteners. There may be a gap between the sealing plate 91 and the battery pack 2. By connecting and securing the sealing plate 91 and the reinforcement 8, vibration in the middle of the sealing plate 91 can be prevented from striking the housing of the battery pack 2.

[0053] In some possible implementations, such as Figure 3 As shown, the reinforcing member 8 has a connecting portion 82 on the side facing away from the battery pack 2. The connecting portion 82 has a threaded groove. One end of a fastener passes through the sealing plate 91 and is threaded into the threaded groove, while the other end of the fastener is confined to the sealing plate 91. The connecting portion 82 can be a nut portion protruding from the surface of the sealing plate 91, and the nut portion has a threaded groove. The fastener can be a bolt, with the stud of the bolt passing through the sealing plate 91 and threaded into the threaded groove of the nut portion. The head of the bolt is confined to the sealing plate 91, and by tightening the bolt, the sealing plate 91 can be made to fit against the reinforcing member 8.

[0054] In some possible implementations, the reinforcing member 8 is an integrally molded part, which is a sheet that can be smoothly attached to the outer surface of the battery pack 2 shell without occupying a large space and without affecting the assembly of other structural parts of the battery box 100, such as the sealing plate 91.

[0055] Example 2

[0056] See Figures 1 to 8 As shown in the embodiment of this application, the battery box 100 is further described. The battery box 1 includes a frame 1, a battery pack 2, and a sealing plate assembly 9. A battery mounting space is formed inside the frame 1. The battery pack 2 is disposed in the battery mounting space and connected to the frame 1. The sealing plate assembly 9 includes a plurality of sealing plates 91. Each sealing plate 91 is connected to the frame 1 and / or the battery pack 2. Each sealing plate 91 cooperates to cover the battery pack 2. At least some of the adjacent sealing plates 91 have a main board portion 911 and an overlapping edge 912 connecting the main board portion 911. An overlapping groove is formed between the overlapping edge 912 and the main board portion 911. The edge of the other sealing plate is embedded in the overlapping groove. The overlapping edge 912 covers the gap between the main board portion 911 and the adjacent sealing plate 91.

[0057] The battery box 100 provided in this embodiment has recessed overlapping edges 912 on at least some of the sealing plates 91, forming overlapping grooves. These grooves serve a limiting function, facilitating the quick assembly of adjacent sealing plates 91. The overlapping edges 912 also cover the gaps between adjacent sealing plates 91, protecting the internal battery pack 2 and preventing external impurities from entering the inside of the sealing plates 91. Furthermore, they provide comprehensive protection for the battery pack 2. The overlapping fit of the sealing plates 91 seals the gaps, preventing the battery pack 2's casing from being exposed, thus contributing to an aesthetically pleasing appearance.

[0058] In some possible implementations, such as Figure 6 As shown, a clearance hole 9121 is provided on the overlapping edge 912. The fastener passes through the edge of one sealing plate 91 and the clearance hole 9121 on the overlapping edge 912 of another sealing plate 91 in sequence and is connected to the battery pack 2. The other end of the fastener is limited to the sealing plate 91 outside the overlapping edge 912.

[0059] In this embodiment, it is not necessary to use individual fasteners to fix the edges of each sealing plate 91. In this embodiment, the edges of two adjacent sealing plates 91 share a fastener, which reduces the number of parts, improves assembly efficiency, and facilitates the disassembly and assembly of the sealing plates 91 and the maintenance of the battery pack 2. The fastener can be a bolt, with the bolt stud threaded through the clearance hole 9121 on the edge of one sealing plate 91 and the overlapping edge 912 of the other sealing plate 91 and threadedly connected to the housing of the battery pack 2.

[0060] In some possible implementations, such as Figure 6As shown, a protrusion 9122 is provided on the side of the overlapping edge 912 facing the battery pack 2, and the protrusion 9122 fits against the outer surface of the battery pack 2. The protrusion 9122 increases the local thickness of the overlapping edge 912, allowing it to fit snugly against the battery pack 2's shell after the overlapping edge 912 is fixed to the battery pack 2. This prevents a large cavity from forming between the sealing plate 91 and the battery pack 2, which could cause the sealing plate 91 to vibrate and strike the battery pack 2.

[0061] In some possible implementations, the clearance hole 9121 extends through the boss portion 9122. Fasteners are provided through the boss portion 9122, and the fasteners can directly act on the boss portion 9122, so that the boss portion 9122 fits tightly against the surface of the outer casing of the battery pack 2.

[0062] In some possible implementations, the boss 9122 and the overlapping edge 912 are integrally formed, resulting in a simple structure, high structural strength, and resistance to tearing and breakage. Alternatively, the boss 9122 and the overlapping edge 912 can be separate components, with the boss 9122 being welded to the overlapping edge 912 later.

[0063] In some possible implementations, the main board portion 911 and the overlapping edge 912 are formed by bending a single piece of sealing plate 91. For example, the bent edge 125b is formed by stamping and bending the edge of a single piece of sealing plate 91. The manufacturing process of the sealing plate 91 with the overlapping edge 912 is simple and does not increase the number of processes and costs much compared to a straight sealing plate 91.

[0064] In some possible implementations, the frame 1 includes a bottom frame 11, a top frame 12, and a middle frame 13. The bottom frame 11 and the top frame 12 are spaced apart, and the middle frame 13 is located between the bottom frame 11 and the top frame 12. The middle frame 13 connects the top frame 12 and the bottom frame 11 respectively, and a battery mounting space is formed between the bottom frame 11 and the top frame 12. Part of the sealing plate 91 covers the top frame 12 and / or the bottom frame 11, and part of the sealing plate 91 covers the middle frame 13. Among the sealing plates 91 covering the middle frame 13, at least part of the sealing plate 91 is provided with an overlapping edge 912.

[0065] The battery pack 2 is disposed within the central frame 13. Therefore, at least some of the sealing plates 91 covering the central frame 13 are provided with overlapping edges 912. The edge of the adjacent sealing plate 91 is embedded in the overlapping plate, which can effectively shield and protect the battery pack 2. Furthermore, the adjacent sealing plates 91 share fasteners, reducing the number of fasteners used.

[0066] Specifically, among the sealing plates 91 covering the central frame 13, in each sealing plate 91 located in the same plane, one of two adjacent sealing plates 91 is provided with an overlapping edge 912. This achieves complete shielding and protection of the battery pack 2 inside the central frame 13.

[0067] In some possible implementation schemes, combined Figure 5 and Figure 7 As shown, the overall structure formed by each battery pack 2 has two large surfaces 21 and two narrow surfaces 22 on its peripheral side. The two large surfaces 21 are parallel, and the two narrow surfaces 22 are parallel. The narrow surfaces 22 are perpendicular to the large surfaces 21, and the two narrow surfaces 22 are located at both ends of the large surfaces 21. Three sealing plates 91 are connected to each large surface 21 on the central frame 13. The three sealing plates 91 are arranged in sequence to cover the large surface 21. Among the three sealing plates 91, one of the two adjacent ones is provided with an overlapping edge 912.

[0068] When the battery box 100 is installed on a heavy truck, the large side 21 of the battery box 100 faces the front of the heavy truck, and the large side 21 of the other side faces the rear of the truck. The two narrow sides 22 (which can be called the width sides) of the battery box 100 face (perpendicular to) the width direction of the vehicle.

[0069] In some possible implementation schemes, combined Figure 4 and Figure 5 As shown, of the three end plates 91, the end plates 91 are connected to the middle frame 13 by fasteners along one side edge away from the middle end plate 91. For example, the middle frame 13 includes two side frames 132, which are located at both ends of the bottom frame 11 and are respectively connected to the top frame 12 and the bottom frame 11. Of the three end plates 91, the end plates 91 are connected to the side frames 132 by bolts along one side edge, and the other side and the middle end plate 91 are connected to the housing of the battery pack 2 by fasteners.

[0070] Example 3

[0071] See Figures 1 to 8As shown in the embodiment of this application, the battery box 100 is further described. The battery box 100 includes a frame 1 and a plurality of battery packs 2. The frame 1 includes a bottom frame 11, a top frame 12, and a middle frame 13. The bottom frame 11 and the top frame 12 are spaced apart. The middle frame 13 is located between the bottom frame 11 and the top frame 12. The middle frame 13 includes two side frames 132, which are located on both sides of the bottom frame 11 along its length and are respectively connected to the top frame 12 and the bottom frame 11. The side frames 132 are provided with a plurality of weight-reducing grooves 1323. A battery mounting space is formed between the bottom frame 11, the top frame 12, and the two side frames 132. The top frame 12 is used to connect to a hoisting device. Each battery pack 2 is disposed within the battery mounting space.

[0072] The battery box 100 of this application can be installed on a heavy truck. One surface of the battery box 100 perpendicular to its thickness direction faces the front of the heavy truck, and the other surface of the battery box 100 perpendicular to its thickness direction faces the rear of the truck. The side brackets 132 on both sides of the battery box 100 face (perpendicular) to the width direction of the truck. The side brackets 132 serve to protect the battery pack 2.

[0073] The lightweight battery box 100 provided in this embodiment is equipped with a side frame 132, which protects the battery box 100 from both sides of the battery pack 2, preventing the battery pack 2 from being directly impacted by external forces and thus avoiding deformation and damage. The side frame 132 also facilitates the installation of the sealing plate 91, which can cover the side frame 132 and shield and protect the surface of the battery pack 2. The side frame 132 is provided with weight-reducing grooves 1323, forming a hollow structure, which is beneficial for weight reduction and realizes the lightweight design of the battery box 100, reducing the weight of the battery box 100.

[0074] In some possible implementations, each battery pack 2 is arranged sequentially along the length of the bottom frame 11. The peripheral side of the overall structure formed by each battery pack 2 has two large surfaces 21 and two narrow surfaces 22. The two large surfaces 21 are parallel to each other, and the two narrow surfaces 22 are parallel to each other. The narrow surfaces 22 are perpendicular to the large surfaces 21. The two narrow surfaces 22 are located at both ends of the large surfaces 21. The two side frames 132 respectively cover the two narrow surfaces 22 of the overall structure.

[0075] When the battery box 100 is installed on a heavy truck, the large surface 21 on one side of the battery box 100 faces the front of the heavy truck, and the large surface 21 on the other side of the battery box 100 faces the rear of the truck. The two narrow surfaces 22 (which can be called the width surfaces) of the battery box 100 face (perpendicular to) the width direction of the vehicle, and the narrow surfaces 22 are exposed on both sides of the heavy truck. The side frame 132 serves to protect the narrow surfaces 22 on both sides of the battery pack 2.

[0076] In some possible implementations, the side frame 132 has two uprights 1321 and several crossbeams 1322, each crossbeam 1322 being located between two uprights 1321, and the two ends of the crossbeams 1322 being connected to the corresponding uprights 1321 respectively, with weight-reducing grooves 1323 provided on the uprights 1321 and / or crossbeams 1322.

[0077] Weight-reducing grooves 1323 can be opened on both the crossbeam 1322 and the column, and the side frame 132 forms a hollow lightweight frame 1, which is conducive to reducing the weight of the battery box 100.

[0078] In some possible implementations, the battery box 100 includes a cover plate 91, at least partially covering the side frame 132, and the cover plate 91 is fastened to the side frame 132 by fasteners. The side frame 132 provides a mounting position for the side cover plate 91, facilitating its installation and allowing it to cover the narrow surface 22 of each battery pack 2, thus shielding and protecting the battery pack 2.

[0079] In some possible implementations, multiple rivet nuts are provided on the column and / or beam 1322, and a weight-reducing groove 1323 is provided on the column and / or beam 1322 between two adjacent rivet nuts. One end of the fastener passes through the sealing plate 91 and is connected to the rivet nut, and the other end of the fastener is limited to the sealing plate 91.

[0080] The fasteners can be bolts. By setting rivet nuts on the crossbeam 1322 and the column, the bolt studs can pass through the end plate 91 and be threaded into the rivet nuts, while the bolt heads are confined to the end plate 91. Weight-reducing grooves 1323 are formed between adjacent rivet nuts, and the structural design is reasonable, which significantly reduces weight.

[0081] In some possible implementations, the lightweight battery box 100 includes a water-cooled unit 3, which is disposed on the top frame 12. The battery pack 2 has a water inlet and a water outlet. The water-cooled unit 3 is connected to an outlet pipe and a return pipe, with the outlet pipe connected to the inlet and the return pipe connected to the outlet.

[0082] In this embodiment, the water-cooled unit 3 is mounted on the top frame 12, which results in a more rational structural layout compared to mounting it on the bottom frame 11. Mounting the water-cooled unit 3 on the top frame 12 simplifies the structure of the bottom frame 11, thereby reducing its height and ultimately decreasing the overall height of the battery box 100.

[0083] In some possible implementations, the water inlet and outlet are located at the top of the battery pack 2. Since the water-cooled unit 3 is mounted on the top frame 12, in this embodiment, the water inlet and outlet of the battery pack 2 are both located at the top of the battery pack 2, i.e., on the side close to the top frame 12, which facilitates connection with the water outlet and return pipes of the water-cooled unit 3 and simplifies the assembly structure of the water-cooled pipes.

[0084] In some possible implementations, such as Figure 2 As shown, the water-cooled unit 3 has a casing. The bottom shell of the casing is supported on the top frame 12, and the top shell of the casing is exposed to the top frame 12. An air outlet 31 is provided on the top shell. The rotation axis of the cooling fan inside the water-cooled unit 3 can pass through the air outlet 31, allowing the airflow driven by the cooling fan to be smoothly discharged from the casing through the air outlet 31. The water-cooled unit 3 has a peripheral shell connecting the top shell and the bottom shell, and an air inlet 34 is provided on the peripheral shell. The air inlet 34 is positioned unobstructed, allowing for smooth air intake.

[0085] In some possible implementations, the battery box 100 includes a high-voltage box disposed on the bottom frame 11 and electrically connected to the battery pack 2. The high-voltage box is electrically connected to the water-cooled unit 3 to provide power to the water-cooled unit 3 and to communicate with the water-cooled unit 3 to manage and control the water-cooled unit 3.

[0086] In some possible implementations, the middle frame 13 includes a longitudinal beam 131 located between two adjacent battery packs 2, and the longitudinal beam 131 connects the bottom frame 11 and the top frame 12 respectively. The water-cooled unit 3 is connected to the high-voltage box by a cable extending along the longitudinal beam 131.

[0087] The longitudinal beam 131 serves to connect and fix the top frame 12 and the bottom frame 11, increasing the structural strength of the frame 1, and also facilitates cable laying. The cables can be located on the side of the longitudinal beam 131 facing the gap between the two battery packs 2, and the cables are hidden and protected.

[0088] Multiple cable bundles can be installed on the longitudinal beam 131, with each cable bundle spaced apart along the length of the longitudinal beam 131. Each cable bundle is connected to and fixes a cable, ensuring that the cable remains tightly attached to the longitudinal beam 131. The cable bundles can be cable ties, ropes, or other structural components.

[0089] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A battery box, characterized in that, include: A frame, the interior of which forms a battery mounting space; At least two battery packs are provided, each battery pack is disposed within the battery mounting space, and each battery pack is arranged sequentially along the horizontal direction, and the battery packs are fixed to the frame; A reinforcing member is located between two adjacent battery packs. The reinforcing member has two side connecting portions that extend to the two adjacent battery packs respectively. Each side connecting portion includes two extension pieces with an included angle between them. Each extension piece is respectively attached to and connected to the corresponding battery pack.

2. The battery box according to claim 1, characterized in that, The included angle between the two extension pieces of the side connection is an acute angle.

3. The battery box according to claim 1, characterized in that, The reinforcing member is sheet-shaped, and the extension trajectory of the peripheral edge of the reinforcing member is a smoothly transitioning arc.

4. The battery box according to claim 1, characterized in that, Each of the extension pieces has a fixing hole at one end away from the center of the reinforcing member; One end of the fastener passes through the fixing hole and is connected to the battery pack, while the other end of the fastener is confined to the extension piece.

5. The battery box according to claim 1, characterized in that, At least two reinforcing members are provided on both sides of the battery box; Each of the reinforcing members is arranged at intervals along the height direction of the frame.

6. The battery box according to claim 1, characterized in that, The frame includes longitudinal beams disposed between the two battery packs; The reinforcing member is connected to the longitudinal beam.

7. The battery box according to claim 6, characterized in that, Includes a sealing plate, which is connected to the frame and covers the battery pack, the reinforcement, and the longitudinal beam.

8. The battery box according to claim 7, characterized in that, The sealing plate is connected to the reinforcing member by fasteners.

9. The battery box according to claim 8, characterized in that, The reinforcing member has a connecting portion on the side facing away from the battery pack, and the connecting portion has a threaded groove; One end of the fastener passes through the sealing plate and is threaded into the threaded groove, while the other end of the fastener is confined to the sealing plate.

10. The battery box according to any one of claims 1-9, characterized in that, The reinforcing component is a one-piece molded part.

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