Box body of battery pack, battery pack and vehicle

Abstract

The utility model relates to a box body of a battery pack, the battery pack and a vehicle, the box body of the battery pack comprises an edge beam and a mounting block, and a mounting groove is formed in the side wall of the edge beam; the mounting block is at least partially contained in the mounting groove, the mounting block is fixedly connected with the edge beam, and the mounting block is used for being connected with external equipment. The mounting groove is formed in the side wall of the edge beam, and the mounting block is at least partially contained in the mounting groove and fixedly connected with the edge beam, so that the mounting block is partially or completely embedded into the mounting groove of the edge beam, and occupied space is reduced.

Description

Technical Field

[0001] The present application relates to the field of battery energy storage technology, and in particular to a battery pack box, a battery pack, and a vehicle. Background Art

[0002] In battery pack design, the side beam is a key component connecting the box and the vehicle body. Its design is crucial to ensuring the installation stability and cost efficiency of the battery pack.

[0003] In the prior art, the mounting structure is directly welded to the side wall of the side beam, which occupies a large space. Utility Model Content

[0004] The embodiments of the present application provide a battery pack case, a battery pack, and a vehicle, which reduce space occupation and at least partially solve the above-mentioned technical problems.

[0005] In order to achieve the above-mentioned object, according to a first aspect of the present application, a battery pack box is provided, comprising:

[0006] side beams, wherein the side walls of the side beams are provided with mounting grooves; and

[0007] A mounting block is at least partially accommodated in the mounting groove, the mounting block is fixedly connected to the side beam, and the mounting block is used to connect to an external device.

[0008] Optionally, a first weld mark is provided between the mounting block and the side beam, and the first weld mark is provided along the periphery of the slot of the mounting slot.

[0009] Optionally, the mounting block is provided with a first weight-reducing hole, and the first weight-reducing hole passes through the mounting block along the direction from the bottom of the mounting slot to the mounting block;

[0010] A second weld mark is provided between the mounting block and the side beam, and the second weld mark is provided along the periphery of the first weight-reducing hole.

[0011] Optionally, the mounting block is further provided with a second weight-reducing hole, and the second weight-reducing hole and the first weight-reducing hole pass through the mounting block in the same direction;

[0012] The size of the second weight-reducing hole is smaller than that of the first weight-reducing hole.

[0013] Optionally, the side beam is provided with a reinforcing protrusion at the bottom of the installation groove;

[0014] A relief recess is provided on one side of the mounting block facing the bottom of the installation groove, and the relief recess matches the reinforcement protrusion.

[0015] Optionally, the material of the side beam includes aluminum or aluminum alloy; and / or,

[0016] The material of the mounting block includes aluminum or aluminum alloy.

[0017] Optionally, the box of the battery pack further includes an ear, wherein the ear is made of the same material as the mounting block, and the ear is welded with the mounting block; or the ear is made of different material from the mounting block, and the ear is detachably connected with the mounting block.

[0018] Optionally, a mounting hole is arranged on the side of the mounting block away from the bottom of the installation groove, and the mounting hole is used for inserting a fastener to detachably connect the mounting block with the ear.

[0019] Optionally, the mounting block includes:

[0020] a block body provided with a fastening hole; and

[0021] a threaded bushing installed in the fastening hole, and a threaded hole of the threaded bushing forms the mounting hole.

[0022] Optionally, the edge beam and the mounting block are separately arranged.

[0023] According to a second aspect of the present application, a battery pack is provided, which includes the box of the battery pack according to any one of the above.

[0024] According to a third aspect of the present application, a vehicle is provided, which includes:

[0025] a vehicle body; and

[0026] a battery pack as described above, and the mounting block of the battery pack is connected with the vehicle body.

[0027] In the box of the battery pack of the embodiments of the present application, the installation groove is arranged on the side wall of the edge beam, the mounting block is at least partially accommodated in the installation groove, and the mounting block is fixedly connected with the edge beam, so that the mounting block is partially or entirely embedded in the installation groove of the edge beam. In this way, the mounting structure does not need to be directly welded on the side wall of the edge beam as in the prior art, and the mounting structure is avoided from being entirely protruded outside the battery pack, thereby reducing the space occupation.

[0028] Other features and advantages of the present application will be described in detail in the following detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the following embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0030] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same drawing numbers represent the same parts in the following description.

[0031] Figure 1 is a schematic exploded view of the structure of a battery pack provided in an exemplary embodiment of the present disclosure;

[0032] Figure 2 yes Figure 1 Schematic diagram of the structure of the side beam and mounting block;

[0033] Figure 3 yes Figure 2 A magnified schematic diagram of the local area A in FIG;

[0034] Figure 4 yes Figure 2 Exploded schematic diagram of the side beam and mounting block (without showing the first and second weld marks);

[0035] Figure 5 yes Figure 4 Enlarged schematic diagram of local B in the figure.

[0036] Description of reference numerals:

[0037] 1000, battery pack; 100, box body; 1, side beam; 11, mounting groove; 12, reinforcement protrusion; 2, mounting block; 21, first weight-reducing hole; 22, second weight-reducing hole; 23, avoidance recess; 24, mounting hole; 25, block body; 26, threaded bushing; 261, threaded hole; 3, first weld mark; 4, second weld mark; 5, bottom plate; 6, front beam; 7, front expansion beam; 8, integral beam; 9, box cover; 10, glue; 20, sealing strip; 200, battery cell module. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0039] This application provides a battery pack box, please refer to Figures 1 to 5 , Figures 1 to 5 A schematic diagram of the structure of the battery pack provided in an embodiment of the present application.

[0040] The box body 100 of the battery pack 1000 includes side beams 1 and mounting blocks 2 .

[0041] The side beam 1 serves as a supporting structure for the box body 100 of the battery pack 1000, and its side wall is provided with a mounting groove 11 (seeFigure 4 and Figure 5 ), these mounting grooves 11 are designed to cooperate with the mounting block 2 to provide space for positioning and installation of the mounting block 2.

[0042] The mounting block 2 is at least partially accommodated in the mounting groove 11 of the side beam 1 (see Figure 3 ) and forms a fixed connection with the side beam 1. The function of the mounting block 2 is to connect with external equipment (such as the vehicle body) to ensure that the battery pack 1000 is firmly installed. The mounting block 2 can be directly connected to the external equipment, and can also be connected to the external equipment through an adapter (such as a hanging ear).

[0043] In the technical solution of the present application, mounting grooves 11 are provided on the side walls of the side beams 1. The mounting block 2 is at least partially accommodated in the mounting grooves 11 and fixedly connected to the side beams 1, so that the mounting block 2 is partially or completely embedded in the mounting grooves 11 of the side beams 1. This eliminates the need to directly weld the mounting structure to the side walls of the side beams 1 as in the prior art, prevents the mounting structure from completely protruding from the outside of the battery pack 1000, and reduces space usage.

[0044] Understandable, see Figure 1 The box body 100 of the battery pack 1000 may also include a bottom plate 5, a front beam 6, a front expansion beam 7, an integral beam 8, a box cover 9, glue 10 and a sealing strip 20, etc. The main improvement point of this application lies in the side beam 1. There is no limitation on these. They can be adjusted according to the actual structural design of the box body 100 and will not be elaborated.

[0045] It can also be understood that the mounting block 2 arranged in the mounting groove 11 itself can achieve a certain degree of fixed connection, but this connection may not be sufficient to withstand the mechanical loads under all working conditions, especially the vibrations, shocks and acceleration changes encountered during the operation of the vehicle. Therefore, in order to provide higher structural strength and connection reliability, a connecting structure can be set between the mounting block 2 and the side beam 1. The connecting structure can be a mechanical fastener, or it can be a structural glue or adhesive, etc.

[0046] In some embodiments, see Figure 3 A first weld mark 3 is provided between the mounting block 2 and the side beam 1, and the first weld mark 3 is disposed along the periphery of the notch of the mounting slot 11. In these embodiments, the first weld mark 3 ensures a continuous metal structure between the mounting block 2 and the side beam 1, effectively transmitting force and reducing the risk of loosening or breaking the connection due to vibration or impact. Providing the first weld mark 3 along the periphery of the notch of the mounting slot 11 provides greater structural strength and connection reliability, thereby ensuring the structural integrity and strength between the side beam 1 and the mounting block 2.

[0047] In some embodiments, see Figures 3 to 5The mounting block 2 is provided with a first weight-reducing hole 21, which penetrates the mounting block 2 in a direction from the groove bottom of the mounting groove 11 to the mounting block 2. The mounting block 2 and the edge beam 1 are provided with a second welding mark 4, which is arranged along the periphery of the first weight-reducing hole 21. In these embodiments, the first weight-reducing hole 21 helps to reduce the weight of the mounting block 2 by reducing the amount of material used, not only reducing the cost of materials, but also reducing the load of the overall battery pack 1000. The second welding mark 4 is arranged along the periphery of the first weight-reducing hole 21 to strengthen the connection stability between the mounting block 2 and the edge beam 1, ensuring that the connection between the mounting block 2 and the edge beam 1 is still stable even in the presence of the first weight-reducing hole 21, effectively transmitting and dispersing stress, enhancing anti-vibration and impact resistance, and ensuring the connection strength and reliability between the mounting block 2 and the edge beam 1 under various working conditions.

[0048] In some embodiments, see Figure 3 and Figure 5 The mounting block 2 is also provided with a second weight-reducing hole 22, which penetrates the mounting block 2 in the same direction as the first weight-reducing hole 21. The size of the second weight-reducing hole 22 is smaller than that of the first weight-reducing hole 21. In these embodiments, not only is the first weight-reducing hole 21 provided, but also the second weight-reducing hole 22, which has a size smaller than that of the first weight-reducing hole 21, ensuring that the mounting block 2 maintains sufficient structural strength while reducing weight.

[0049] In some embodiments, the second weight-reducing hole 22 is arranged above and / or below the first weight-reducing hole 21 in the vertical direction, i.e., when the box 100 of the battery pack 1000 is hung on an external device, no second weight-reducing hole 22 is arranged in the left-right direction of the first weight-reducing hole 21, which helps to ensure the bending and torsional deformation resistance of the structure. At the connection between the mounting block 2 and the edge beam 1, this layout reduces the impact of the mounting moment on the structure, improving the rigidity of the overall structure while ensuring the lightweight of the structure.

[0050] In some embodiments, see Figure 5The side beam 1 is provided with a reinforcing protrusion 12 at the bottom of the mounting groove 11; the mounting block 2 is provided with an avoidance recess 23 on the side facing the bottom of the mounting groove 11, and the avoidance recess 23 matches the reinforcing protrusion 12. In these embodiments, the reinforcing protrusion 12 is provided at the bottom of the side beam 1 in the mounting groove 11, which enhances the local structural strength of the side beam 1 in the area of ​​the mounting groove 11 and improves the rigidity and deformation resistance of the overall structure. The mounting block 2 is provided with an avoidance recess 23 on the side facing the bottom of the mounting groove 11, which matches the reinforcing protrusion 12, ensuring the precise alignment of the mounting block 2 and the side beam 1 during installation. At the same time, the combination of the avoidance recess 23 and the reinforcing protrusion 12 achieves structural complementarity and reinforcement. Specifically, reinforcing ribs are provided in the side beam 1. When the mounting groove 11 is opened, part of the reinforcing ribs is removed, and the remaining part forms the reinforcing protrusion 12. When the installation groove 11 is formed, a portion of the reinforcing ribs is selectively retained to form the reinforcing protrusion 12, thereby avoiding a decrease in structural strength caused by excessive processing (such as over-milling) and also helping to reduce processing difficulty.

[0051] In some embodiments, the side beam 1 is made of aluminum or an aluminum alloy. Using aluminum or an aluminum alloy as the side beam 1 material facilitates machining and reduces processing difficulty. The density of aluminum or an aluminum alloy is much lower than that of steel, significantly reducing the weight of the side beam 1 while maintaining sufficient strength. This reduces the mass of the box 100 and increases the energy density of the battery pack 1000. Specifically, mounting slots 11 are machined into the aluminum profile beam to form the side beam 1.

[0052] In some embodiments, the mounting block 2 is made of aluminum or an aluminum alloy. In these implementations, the use of aluminum or an aluminum alloy as the mounting block 2 material is easy to machine and reduces processing difficulty. The density of aluminum or an aluminum alloy is much lower than that of steel, which can significantly reduce the weight of the mounting block 2 while maintaining sufficient strength, thereby reducing the mass of the box 100 and improving the energy density of the battery pack 1000. Specifically, the mounting block 2 is formed by an aluminum extrusion process.

[0053] In some embodiments, the case 100 of the battery pack 1000 further includes a hanging ear, wherein the hanging ear is made of the same material as the mounting block 2, and the hanging ear is welded to the mounting block 2; or, the hanging ear is made of a different material from the mounting block 2, and the hanging ear is detachably connected to the mounting block 2. In these embodiments, there are more choices for the hanging ear material, and the material of the hanging ear can be selected according to specific needs to be more economical or have better performance, thereby reducing costs. For example, when the mounting block 2 is made of aluminum or aluminum alloy, the material of the hanging ear can be aluminum or aluminum alloy so as to be welded to the mounting block 2 to ensure the integrity and strength of the structure. The material of the hanging ear can also be steel so as to be detachably connected to the mounting block 2. Steel has high strength and is inexpensive, which ensures the structural strength of the hanging ear and reduces costs.

[0054] In some embodiments, see Figure 3 andFigure 5 , a mounting hole 24 is provided on the side of the mounting block 2 away from the bottom of the mounting slot 11, and the mounting hole 24 is used to insert a fastener so that the mounting block 2 can be detachably connected to the external device. In these embodiments, the design of the mounting hole 24 on the side of the mounting block 2 away from the bottom of the mounting slot 11 not only ensures a stable connection with the external device, but also achieves structural flexibility and convenience of maintenance through the use of detachable fasteners (such as screws or bolts, etc.), while ensuring structural stability and connection reliability, while improving the adaptability and maintenance efficiency of the overall structure. Specifically, there are multiple mounting holes 24, and multiple mounting holes 24 are arranged along the periphery of the first weight-reducing hole 21. Multiple mounting holes 24 can help optimize load distribution, reduce vibration, and improve the stability and performance of the overall structure.

[0055] In some embodiments, the side beam 1 and the mounting block 2 are provided separately. In these embodiments, by designing the side beam 1 and the mounting block 2 as separate structures and manufacturing them independently, the design of the side beam 1 is simplified, avoiding extensive machining and the use of complex die-casting molds, simplifying the production process, and reducing manufacturing costs. The independent manufacturing mode of the mounting block 2 achieves modularization, enabling the use of more economical production methods such as aluminum extrusion, small-batch machining, or standard die-casting, further reducing costs. For different mounting positions, only the position of the mounting slot 11 of the side beam 1 needs to be fine-tuned, without modifying the main body of the side beam 1, simplifying the design and production process. For different vehicle models, only the mounting block 2 needs to be replaced or adjusted, without redesigning the side beam 1, greatly improving versatility and installation convenience. That is, through the separate design and independent manufacturing of the side beam 1 and the mounting block 2, the battery pack 1000 can flexibly adapt to different vehicle models and mounting positions, reducing costs while improving versatility and market adaptability.

[0056] In some embodiments, see Figure 3 and Figure 5 The mounting block 2 includes a block body 25 and a threaded bushing 26. The block body 25 is provided with a fastening hole. The threaded bushing 26 is mounted in the fastening hole, and the threaded hole 261 of the threaded bushing 26 forms the mounting hole 24. In these embodiments, the block body 25 is provided with a fastening hole for mounting the threaded bushing 26, and the threaded hole 261 of the threaded bushing 26 directly constitutes the mounting hole 24. That is, the threaded hole 261 is used to cooperate with a fastener (such as a screw or bolt) to achieve a detachable connection. The use of the threaded bushing 26 increases the stability of the connection between the fastener and the mounting block 2, maintaining a good connection even after bearing a large load or long-term use, and preventing the connection from loosening due to material fatigue or wear. By installing the threaded bushing 26 on the block body 25, the material of the block body 25 can be protected from direct wear and tear caused by the installation and removal of the fastener, thereby extending the service life of the mounting block 2. As an independent component, the threaded bushing 26 can be replaced separately once worn or damaged, without replacing the entire mounting block 2, thereby reducing maintenance costs and operational complexity.

[0057] According to the second aspect of this application, see Figure 1 A battery pack 1000 is provided, including a housing 100 of the battery pack 1000. The structure of the housing 100 of the battery pack 1000 is as described above. Since the battery pack 1000 adopts all the technical solutions of all the above embodiments, it has at least the beneficial effects brought by the technical solutions of the above embodiments, which will not be described in detail here. Of course, the battery pack 1000 includes a cell module 200 housed in the housing 100.

[0058] According to the third aspect of the present application, a vehicle is provided, including a vehicle body and a battery pack 1000. The mounting block 2 of the battery pack 1000 is connected to the vehicle body. The structure of the battery pack 1000 is as described above. Since the vehicle adopts all the technical solutions of all the above embodiments, it at least has the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0059] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0060] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0061] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0062] The above are merely preferred embodiments of the present application and do not constitute any form of limitation to the present application. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A battery pack box, characterized in that: include: Side beams, wherein the side walls of the side beams are provided with mounting grooves; as well as, A mounting block is at least partially accommodated in the mounting groove, the mounting block is fixedly connected to the side beam, and the mounting block is used to connect to an external device.

2. The battery pack box according to claim 1, characterized in that: A first weld mark is provided between the mounting block and the side beam, and the first weld mark is provided along the periphery of the notch of the mounting slot.

3. The battery pack box according to claim 1, characterized in that: The mounting block is provided with a first weight-reducing hole, and the first weight-reducing hole passes through the mounting block along the direction from the bottom of the mounting slot to the mounting block; A second weld mark is provided between the mounting block and the side beam, and the second weld mark is provided along the periphery of the first weight-reducing hole.

4. The battery pack box according to claim 3, characterized in that: The mounting block is further provided with a second weight-reducing hole, and the second weight-reducing hole and the first weight-reducing hole penetrate the mounting block in the same direction; The size of the second weight-reducing hole is smaller than that of the first weight-reducing hole.

5. The battery pack box according to claim 1, characterized in that: The side beam is provided with a reinforcing protrusion at the bottom of the installation groove; A relief recess is provided on one side of the mounting block facing the bottom of the installation groove, and the relief recess matches the reinforcement protrusion.

6. The battery pack box according to claim 1, characterized in that: The material of the side beam includes aluminum or aluminum alloy; and / or, The material of the mounting block includes aluminum or aluminum alloy.

7. The battery pack box according to any one of claims 1 to 6, characterized in that: The box of the battery pack further includes a hanging ear, wherein the hanging ear and the mounting block are made of the same material and are welded to the mounting block; or the hanging ear and the mounting block are made of different materials and are detachably connected to the mounting block.

8. The battery pack box according to claim 7, characterized in that: A mounting hole is provided on a side of the mounting block away from the bottom of the mounting slot, and the mounting hole is used to insert a fastener so that the mounting block and the hanging ear are detachably connected.

9. The battery pack box according to claim 8, characterized in that: The mounting block includes: The block body is provided with a fastening hole; and A threaded bushing is installed in the fastening hole, and the threaded hole of the threaded bushing forms the installation hole.

10. The battery pack box according to any one of claims 1 to 6, characterized in that: The side beam and the mounting block are arranged separately.

11. A battery pack, characterized in that: A box comprising a battery pack as claimed in any one of claims 1 to 10.

12. A vehicle, characterized in that: include: Vehicle body; as well as, According to the battery pack as claimed in claim 11, the mounting block of the battery pack is connected to the vehicle body.

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