Box body of battery pack, battery pack, and vehicle

Abstract

The present application relates to a box body of a battery pack, the battery pack, and a vehicle. The box body of the battery pack comprises a side beam and mounting blocks. A side wall of the side beam is provided with mounting slots. The mounting blocks are at least partially accommodated in the mounting slots. The mounting blocks are fixedly connected to the side beam, and the mounting blocks are configured to be connected to an external device.

Description

Battery pack box, battery pack and vehicle

[0001] The present application claims priority to the Chinese patent application No. 202422411090.5, filed on September 30, 2024, to the Chinese Patent Office, the content of the above application being hereby incorporated by reference in its entirety into the present application. TECHNICAL FIELD

[0002] The present application relates to the technical field of battery energy storage, in particular to a battery pack box, a battery pack and a vehicle. BACKGROUND

[0003] In the design of a battery pack, the side beam as a key component connecting the box and the vehicle body is crucial to ensure the installation stability and cost efficiency of the battery pack.

[0004] In the related art, the mounting structure is welded to the side wall of the side beam as an adapter connecting the box and the vehicle body of the battery pack. SUMMARY

[0005] However, the mounting structure is directly welded to the side wall of the side beam, which occupies a large space.

[0006] In a first aspect, the present application provides a battery pack box, comprising:

[0007] a side beam, the side wall of the side beam being provided with a mounting groove; and

[0008] a mounting block, at least partially accommodated in the mounting groove, the mounting block being fixedly connected with the side beam, the mounting block being configured to be connected with an external device.

[0009] In a second aspect, the present application provides a battery pack, comprising the battery pack box according to any one of the above.

[0010] In a third aspect, the present application provides a vehicle, comprising:

[0011] a vehicle body; and

[0012] a battery pack as described above, the mounting block of the battery pack being connected with the vehicle body. ADVANTAGEOUS EFFECTS

[0013] The battery pack box provided by the present application has the mounting groove arranged on the side wall of the side beam, the mounting block is at least partially accommodated in the mounting groove and fixedly connected with the side beam, and the mounting block is partially or entirely embedded in the mounting groove of the side beam. In this way, the mounting structure does not need to be directly welded to the side wall of the side beam as in the related art, avoiding the mounting structure from being entirely protruded outside the battery pack and reducing the space occupation. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 is an exploded view of the battery pack provided by the present application;

[0015] Fig. 2 is a structural view of the side beam and the mounting block in Fig. 1;

[0016] Fig. 3 is an enlarged view of the partial A in Fig. 2;

[0017] Fig. 4 is an exploded view of the side beam and the mounting block in Fig. 2 (without showing the first weld mark and the second weld mark);

[0018] Fig. 5 is an enlarged view of the partial B in Fig. 4.

[0019] Legend:

[0020] 1000, battery pack; 100, box body; 1, side beam; 11, mounting groove; 12, reinforcing protrusion; 2, mounting block; 21, first weight-reducing hole; 22, second weight-reducing hole; 23, avoiding 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, integrated beam; 9, box cover; 10, glue; 20, sealing strip; 200, battery cell module. Embodiments of the present application

[0021] The present application provides a box body of a battery pack. Please refer to Figs. 1-5, which are structural views of the battery pack provided by the present application.

[0022] The box body 100 of the battery pack 1000 includes a side beam 1 and a mounting block 2.

[0023] The side beam 1 serves as the support structure of the box body 100 of the battery pack 1000, and the side wall thereof is provided with mounting grooves 11 (see Figs. 4 and 5). These mounting grooves 11 are designed to cooperate with the mounting block 2 to provide space for positioning and mounting the mounting block 2.

[0024] The mounting block 2 is at least partially accommodated in the mounting groove 11 of the side beam 1 (see Fig. 3) and is fixedly connected with the side beam 1. The mounting block 2 serves to connect with external equipment (such as a vehicle body), thereby ensuring stable mounting of the battery pack 1000. The mounting block 2 can be directly connected with the external equipment or can be connected with the external equipment through an adapter (such as an ear).

[0025] In the technical solution of the present application, the mounting grooves 11 are arranged on the side wall of the side beam 1, and the mounting block 2 is at least partially accommodated in the mounting grooves 11 and fixedly connected with the side beam 1, so that the mounting block 2 is partially or entirely embedded in the mounting grooves 11 of the side beam 1. In this way, the mounting structure does not need to be directly welded on the side wall of the side beam 1 as in the related art, thereby avoiding that the mounting structure entirely protrudes outside the battery pack 1000 and reducing the space occupation.

[0026] As can be understood, referring to FIG. 1, the box body 100 of the battery pack 1000 can further include a bottom plate 5, a front beam 6, a front expansion beam 7, an integrated beam 8, a box cover 9, glue 10, and a sealing strip 20, etc. The main improvement of the present application is the side beam 1, and the other components are not limited, which can be adjusted according to the actual structure design of the box body 100, and thus will not be described herein.

[0027] As can be further understood, the mounting block 2 arranged in the mounting groove 11 can achieve a certain degree of fixed connection, but such connection can not be sufficient to withstand the mechanical load under all working conditions, especially the vibration, impact and acceleration change encountered during vehicle operation, etc. Therefore, in order to provide higher structural strength and connection reliability, a connecting structure can be arranged between the mounting block 2 and the side beam 1, which can be a mechanical fastener, or a structural glue or adhesive, etc.

[0028] In some possible implementations, referring to FIG. 3, a first welding mark 3 is arranged between the mounting block 2 and the side beam 1, and the first welding mark 3 is arranged along the edge of the slot opening of the mounting groove 11. In these possible implementations, the first welding mark 3 can ensure that the mounting block 2 and the side beam 1 form a continuous metal structure, effectively transfer the force, and reduce the risk of connection loosening or breaking caused by vibration or impact. Arranging the first welding mark 3 along the edge of the slot opening of the mounting groove 11 can provide higher structural strength and connection reliability, and ensure the structural integrity and strength between the side beam 1 and the mounting block 2.

[0029] In some possible implementations, referring to FIGS. 3 to 5, the mounting block 2 is provided with a first weight-reducing hole 21, and the first weight-reducing hole 21 penetrates the mounting block 2 in a direction from the slot bottom of the mounting groove 11 to the mounting block 2; a second welding mark 4 is arranged between the mounting block 2 and the side beam 1, and the second welding mark 4 is arranged along the edge of the first weight-reducing hole 21. In these possible implementations, by reducing the amount of material used, the first weight-reducing hole 21 helps to reduce the weight of the mounting block 2, not only reducing the material cost, but also reducing the load of the overall battery pack 1000. Arranging the second welding mark 4 along the edge of the first weight-reducing hole 21 can strengthen the connection stability between the mounting block 2 and the side beam 1, and ensure that the connection between the mounting block 2 and the side beam 1 is still stable even in the presence of the first weight-reducing hole 21, which can effectively transfer and disperse stress, enhance the anti-vibration and anti-impact ability, and ensure the connection strength and reliability between the mounting block 2 and the side beam 1 under various working conditions.

[0030] In some possible implementations, as shown in FIG. 3 and FIG. 5, the mounting block 2 is further provided with a second lightening hole 22, the second lightening hole 22 and the first lightening hole 21 penetrate the mounting block 2 in the same direction; the size of the second lightening hole 22 is smaller than the size of the first lightening hole 21. In these possible implementations, not only the first lightening hole 21 is provided, but also the second lightening hole 22 is provided, the size of the second lightening hole 22 is smaller than the size of the first lightening hole 21, which ensures that the mounting block 2 maintains sufficient structural strength while reducing weight.

[0031] In some possible implementations, the second lightening hole 22 is arranged above and / or below the first lightening hole 21 in the vertical direction, that is, when the box body 100 of the battery pack 1000 is hung on the external equipment, the second lightening hole 22 is not arranged in the left-right direction of the first lightening hole 21, which helps to ensure the bending and torsional deformation resistance of the structure, and at the connection between the mounting block 2 and the edge beam 1, this layout reduces the influence of the mounting moment on the structure, improves the rigidity of the overall structure, and ensures the lightweight of the structure.

[0032] In some possible implementations, as shown in FIG. 5, the edge beam 1 is provided with a reinforcing protrusion 12 at the bottom of the mounting groove 11; the side of the mounting block 2 facing the bottom of the mounting groove 11 is provided with a recess 23, and the recess 23 matches the reinforcing protrusion 12. In these possible implementations, the reinforcing protrusion 12 is arranged at the bottom of the mounting groove 11 of the edge beam 1, which enhances the local structural strength of the edge beam 1 in the area of the mounting groove 11 and improves the rigidity and deformation resistance of the overall structure; the side of the mounting block 2 facing the bottom of the mounting groove 11 is provided with a recess 23, which matches the reinforcing protrusion 12, thereby ensuring the accurate positioning of the mounting block 2 and the edge beam 1 during installation, and through the combination of the recess 23 and the reinforcing protrusion 12, the structure is complemented and strengthened. Specifically, the edge beam 1 is provided with a reinforcing rib, and when the mounting groove 11 is opened, part of the reinforcing rib is removed to form the reinforcing protrusion 12. When the mounting groove 11 is opened, the reinforcing protrusion 12 is formed by selectively retaining part of the reinforcing rib, which avoids the decline of structural strength caused by excessive processing (such as excessive milling) and is also conducive to reducing the processing difficulty.

[0033] In some possible implementations, the material of the edge beam 1 includes aluminum or aluminum alloy. In these implementations, aluminum or aluminum alloy is used as the material of the edge beam 1, which is easy to machine and reduces the processing difficulty; the density of aluminum or aluminum alloy is much lower than that of steel, which can significantly reduce the weight of the edge beam 1 while maintaining sufficient strength, thereby reducing the mass of the box body 100 and improving the energy density of the battery pack 1000. Specifically, the mounting groove 11 is machined on the aluminum profile beam to form the edge beam 1.

[0034] In some possible implementation manners, the material of the mounting block 2 includes aluminum or an aluminum alloy. In these implementations, the use of aluminum or an aluminum alloy as the material of the mounting block 2 facilitates machining and reduces machining difficulty. The density of aluminum or an aluminum alloy is much lower than that of steel, and the weight of the mounting block 2 can be significantly reduced while maintaining sufficient strength, thereby reducing the mass of the box body 100 and improving the energy density of the battery pack 1000. Specifically, the mounting block 2 is formed by an aluminum extrusion process.

[0035] In some possible implementation manners, the box body 100 of the battery pack 1000 further includes a lug, where the lug is made of the same material as the mounting block 2 and is welded to the mounting block 2, or the lug is made of a different material from the mounting block 2 and is detachably connected to the mounting block 2. In these possible implementation manners, the lug can be made of more materials, and the material of the lug can be selected according to specific requirements to select a more economical or better-performing material, thereby reducing costs. For example, when the mounting block 2 is made of aluminum or an aluminum alloy, the material of the lug can also be aluminum or an aluminum alloy to be welded to the mounting block 2, thereby ensuring the integrity and strength of the structure. The material of the lug can also be steel to be detachably connected to the mounting block 2, thereby ensuring the structural strength of the lug and reducing costs.

[0036] In some possible implementation manners, as shown in FIGS. 3 and 5, the side of the mounting block 2 away from the bottom of the mounting groove 11 is provided with a mounting hole 24, and the mounting hole 24 is configured to be inserted with a fastener to detachably connect the mounting block 2 to an external device. In these possible implementation manners, the mounting hole 24 on the side of the mounting block 2 away from the bottom of the mounting groove 11 not only ensures stable connection with the external device, but also realizes flexibility of the structure and convenience of maintenance through use of a detachable fastener (such as a screw or a bolt), thereby improving adaptability and maintenance efficiency of the overall structure while ensuring structural stability and reliable connection. Specifically, the mounting hole 24 is provided with a plurality of mounting holes 24, and the plurality of mounting holes 24 are arranged along the periphery of the first weight-reducing hole 21. The plurality of mounting holes 24 can help optimize load distribution, reduce vibration, and improve stability and performance of the overall structure.

[0037] In some possible implementation manners, the side beam 1 and the mounting block 2 are separately arranged. In these possible implementation manners, by designing the side beam 1 and the mounting block 2 as a separate structure and manufacturing them independently, the design of the side beam 1 is simplified, the use of a large amount of machining and a complex die-casting mold is avoided, the production process is simplified, and the manufacturing cost is reduced. The independent manufacturing mode of the mounting block 2 realizes modularity, and a more economical production mode such as an aluminum extrusion process, small-batch machining, or standard die-casting can be adopted to further reduce the cost. For different mounting positions, only the position of the mounting groove 11 of the side beam 1 needs to be adjusted, and the main body of the side beam 1 does not need to be changed, thereby simplifying the design and production process. For different vehicle models, only the mounting block 2 needs to be replaced or adjusted, and the side beam 1 does not need to be redesigned, thereby greatly improving the universality and installation convenience. That is, by separating the design and manufacturing of the side beam 1 and the mounting block 2, the battery pack 1000 can be flexibly adapted to different vehicle models and mounting positions, the cost is reduced, and the universality and market adaptability are improved.

[0038] In some possible implementation manners, as shown in FIGS. 3 and 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 installed in the fastening hole, and a threaded hole 261 of the threaded bushing 26 forms the mounting hole 24. In these possible implementation manners, the block body 25 is provided with a fastening hole, and the threaded bushing 26 is arranged in the fastening hole. The threaded hole 261 of the threaded bushing 26 directly constitutes the mounting hole 24. That is, the threaded hole 261 is arranged to cooperate with a fastener such as a screw or a bolt to achieve detachable connection. The use of the threaded bushing 26 increases the stability of the connection between the fastener and the mounting block 2. Even after bearing a large load or long-term use, the connection can still maintain a good state, and the connection loosening caused by material fatigue or wear is avoided. By installing the threaded bushing 26 on the block body 25, the material of the block body 25 can be protected from direct wear caused by the installation and removal of the fastener, thereby prolonging the service life of the mounting block 2. As an independent component, the threaded bushing 26 can be replaced alone once it is worn or damaged, without the need to replace the entire mounting block 2, thereby reducing the maintenance cost and operation complexity.

[0039] According to a second aspect of the present application, as shown in FIG. 1, a battery pack 1000 is provided, which includes a box body 100 of the battery pack 1000. The structure of the box body 100 of the battery pack 1000 is as described above. Since the battery pack 1000 adopts all the technical solutions of the above possible implementation manners, at least the beneficial effects brought by the technical solutions of the possible implementation manners are achieved, which will not be repeated here. Of course, the battery pack 1000 includes a battery cell module 200 accommodated in the box body 100.

[0040] According to a third aspect of the present application, a vehicle is provided, comprising a vehicle body and a battery pack 1000, wherein the mounting block 2 of the battery pack 1000 is connected to the vehicle body, and the structure of the battery pack 1000 is as described above. Since the vehicle adopts all the technical solutions of all possible implementation manners described above, it at least has the beneficial effects brought by the technical solutions of the possible implementation manners described above, which will not be repeated here.

Claims

1. A battery pack (1000) case (100) comprising: a side beam (1), a side wall of the side beam (1) being provided with a mounting groove (11) ; and, a mounting block (2), at least partially accommodated in the mounting groove (11), the mounting block (2) being fixedly connected with the side beam (1), the mounting block (2) being configured to be connected with an external device.

2. The battery pack (1000) housing (100) of claim 1, wherein, A first welding mark (3) is arranged between the mounting block (2) and the side beam (1), the first welding mark (3) being arranged along a peripheral edge of a groove opening of the mounting groove (11).

3. The battery pack (1000) housing (100) of claim 1, wherein, The mounting block (2) is provided with a first weight-reducing hole (21), the first weight-reducing hole (21) penetrating through the mounting block (2) in a direction from a groove bottom of the mounting groove (11) to the mounting block (2) ; A second welding mark (4) is arranged between the mounting block (2) and the side beam (1), the second welding mark (4) being arranged along a peripheral edge of the first weight-reducing hole (21).

4. The battery pack (1000) housing (100) of claim 3, wherein, The mounting block (2) is further provided with a second weight-reducing hole (22), the second weight-reducing hole (22) and the first weight-reducing hole (21) penetrating through the mounting block (2) in the same direction; A size of the second weight-reducing hole (22) is smaller than a size of the first weight-reducing hole (21).

5. The battery pack (1000) housing (100) of claim 1, wherein, The side beam (1) is provided with a reinforcing protrusion (12) at a groove bottom of the mounting groove (11) ; A side of the mounting block (2) facing the groove bottom of the mounting groove (11) is provided with an avoiding recess (23), the avoiding recess (23) being matched with the reinforcing protrusion (12).

6. The battery pack (1000) housing (100) of claim 1, wherein, A material of the side beam (1) comprises aluminum or aluminum alloy; and / or, A material of the mounting block (2) comprises aluminum or aluminum alloy.

7. The battery pack (1000) case (100) according to any one of claims 1 to 6, further comprising a hanging ear, wherein, A lug is made of the same material as the mounting block (2), the lug being welded with the mounting block (2) ; or, the lug is made of a different material from the mounting block (2), the lug being detachably connected with the mounting block (2).

8. The battery pack (1000) housing (100) of claim 7, wherein, A side of the mounting block (2) facing away from the groove bottom of the mounting groove (11) is provided with a mounting hole (24), the mounting hole (24) being configured to be inserted with a fastener so as to detachably connect the mounting block (2) with the lug.

9. The battery pack (1000) housing (100) of claim 8, wherein, The mounting block (2) comprises: a block body (25) provided with a fastening hole; and, a threaded bushing (26) mounted in the fastening hole, a threaded hole (261) of the threaded bushing (26) forming the mounting hole (24).

10. The battery pack (1000) housing (100) according to any one of claims 1 to 6, wherein The side beam (1) and the mounting block (2) are provided separately. 11.A battery pack (1000) comprising the battery pack (1000) case (100) according to any one of claims 1 to 10. 12.A vehicle comprising: a vehicle body; and, the battery pack (1000) according to claim 11, the mounting block (2) of the battery pack (1000) being connected with the vehicle body. ​

Images