Battery pack assembly and vehicle

Abstract

The embodiment of the invention provides a battery pack assembly and a vehicle, the battery pack assembly comprises a battery pack, the battery pack comprises a mounting frame, and a battery is arranged in the mounting frame; and the number of the mounting support assemblies is multiple, one end of each mounting support assembly is connected with the side wall, in the width direction and the length direction, of the mounting frame at the same time, and the other end of each mounting support assembly is used for being connected with a rear longitudinal beam of the vehicle. By increasing the number of connecting points of the battery pack and the mounting bracket assembly, the purpose of improving the overall rigidity of the connecting structure is achieved, so that the technical effects of reducing in-vehicle noise and vibration caused by vibration of the battery pack and improving NVH (Noise Vibration and Harshness) performance are achieved; therefore, the technical problem that the mounting structure of the vehicle battery pack is insufficient in strength is solved.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more specifically, to a battery pack assembly and a vehicle. Background Technology

[0002] In the field of electric vehicles, the battery pack, as a core component, directly affects the vehicle's NVH (Noise, Vibration, and Harshness) performance and safety through its installation structure. Currently, most electric vehicles use a method of mounting the battery pack in the middle or rear of the chassis to achieve optimal weight distribution and handling.

[0003] The battery pack mounting structure is the only mounting structure between the battery pack and the vehicle body, and its structural strength has a significant impact on the vehicle's NVH performance. The connection method between the battery pack and the vehicle body, as well as the strength of the mounting structure, will alter the transfer function from the excitation source load input point to the target vibration and noise point inside the vehicle.

[0004] There is currently no good solution to the above problems. Summary of the Invention

[0005] This application provides a battery pack assembly and a vehicle to at least solve the technical problem of insufficient strength in the mounting structure of the vehicle battery pack.

[0006] According to one aspect of the embodiments of this application, a battery pack assembly is provided, including: a battery pack, the battery pack including a mounting frame, a battery disposed within the mounting frame; and a mounting bracket assembly, wherein there are multiple mounting bracket assemblies, one end of each mounting bracket assembly is connected to the sidewalls of the mounting frame in both the width and length directions, and the other end of each mounting bracket assembly is used to connect to the rear longitudinal beam of a vehicle.

[0007] Furthermore, at least one mounting bracket assembly includes: a multi-directional connector, one end of which is connected to the sidewalls of the mounting frame in both the width and length directions; an adapter, one end of which is connected to the other end of the multi-directional connector; and a mounting bracket, one end of which is connected to the other end of the adapter, the other end of which is used to connect to the rear longitudinal beam.

[0008] Furthermore, some of the multi-directional connectors extend along the width direction of the mounting frame, while others extend along the length direction of the battery pack.

[0009] Furthermore, the multi-directional connector includes: a first connecting segment extending along the width direction of the mounting frame, the first connecting segment having multiple first flange structures spaced apart circumferentially along the first connecting segment, one end of the first connecting segment being connected to the side wall of the mounting frame in the width direction via the multiple first flange structures, and an adapter being connected to the first connecting segment; and a second connecting segment, one end of the second connecting segment being connected to the other end of the first connecting segment, the other end of the second connecting segment extending along the length direction of the mounting frame, the second connecting segment having multiple second flange structures spaced apart circumferentially along the second connecting segment, and the other end of the second connecting segment being connected to the side wall of the mounting frame in the length direction via the multiple second flange structures.

[0010] Furthermore, the adapter includes: an adapter bracket, one end of which is connected to a multi-directional connector; a portion of the adapter bracket extends away from the multi-directional connector along the thickness direction of the mounting frame, and another portion extends away from the mounting frame along the length direction of the mounting frame; a reinforcing plate connected to the adapter bracket, the reinforcing plate being located on the side of the adapter bracket away from the mounting frame, and multiple reinforcing plates being spaced apart along the thickness direction of the mounting frame; and an extension section, one end of which is connected to the other end of the adapter bracket, the other end of which extends away from the adapter bracket along the width direction of the mounting frame, and the extension section being connected to the mounting bracket.

[0011] Furthermore, the mounting frame includes: a top plate, which is connected to the adapter; a first side plate, which is connected to the top plate, with one end of the first side plate away from the top plate for connection to the rear longitudinal beam; a second side plate, which is connected to the top plate and the first side plate, with one end of the second side plate away from the top plate for connection to the rear longitudinal beam; a third side plate, which is connected to the top plate and the second side plate; and a fourth side plate, which is connected to the top plate, the third side plate, and the first side plate, with one end of the fourth side plate away from the top plate for connection to the rear longitudinal beam; wherein the top plate, the first side plate, the second side plate, the third side plate, and the fourth side plate are arranged to form a box-shaped structure with an opening on one side.

[0012] Furthermore, the end of the first side plate away from the top plate has a third flange structure, which extends away from the first side plate along the length direction of the top plate, and the first side plate is connected to the rear longitudinal beam through the third flange structure; and / or, the end of the second side plate away from the top plate has a fourth flange structure, which extends away from the second side plate along the width direction of the top plate, and the second side plate is connected to the rear longitudinal beam through the fourth flange structure.

[0013] Furthermore, the length of the fourth side plate is greater than the length of the third side plate, and / or the fourth side plate has reinforcing ribs arranged along the length direction of the fourth side plate.

[0014] Furthermore, there are two mounting bracket assemblies, both located on the same side of the mounting frame, and the two mounting bracket assemblies are spaced apart along the width direction of the mounting frame, and / or, the two mounting bracket assemblies are respectively located at both ends of the side wall of the mounting frame along the width direction of the mounting frame.

[0015] According to another aspect of the embodiments of this application, a vehicle is also provided, including the battery pack assembly described above, comprising: a rear longitudinal beam, a mounting frame connected to the rear longitudinal beam via a mounting bracket assembly; a trailing arm connected to the rear longitudinal beam, the mounting bracket assembly being disposed adjacent to the trailing arm.

[0016] In this embodiment, one end of multiple mounting bracket assemblies is connected to the sidewalls of the battery pack mounting frame in the width and length directions. By increasing the number of connection points between the battery pack and the mounting bracket assemblies, the overall rigidity of the connection structure is improved. This achieves the technical effect of reducing in-vehicle noise and vibration caused by battery pack vibration, improving NVH performance, and thus solving the technical problem of insufficient strength of the vehicle battery pack mounting structure. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0018] Figure 1 This is a schematic diagram of an optional battery pack assembly according to an embodiment of this application;

[0019] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0020] Figure 3 This is a schematic diagram of an optional battery pack assembly according to an embodiment of this application;

[0021] Figure 4 This is a schematic diagram of an optional battery pack assembly according to an embodiment of this application;

[0022] Figure 5 This is a schematic diagram of an optional battery pack assembly according to an embodiment of this application;

[0023] Figure 6 This is a schematic diagram of an optional mounting bracket according to an embodiment of this application;

[0024] Figure 7 This is a schematic diagram of an optional battery pack assembly according to an embodiment of this application.

[0025] The above figures include the following reference numerals:

[0026] 10. Battery pack; 11. Mounting frame;

[0027] 20. Install the bracket assembly;

[0028] 21. Multi-directional connectors;

[0029] 211. First connecting section; 2111. First flange structure;

[0030] 212. Second connecting section; 2121. Second flange structure;

[0031] 22. Mounting bracket;

[0032] 221. First side panel; 2211. Third flange structure;

[0033] 222. Second side panel; 2221. Fourth flange structure;

[0034] 223. Third side panel;

[0035] 224. Fourth side plate; 2241. Reinforcing rib;

[0036] 225. Top slab;

[0037] 23. Adapter; 230. Adapter bracket; 231. Reinforcing plate; 232. Extension section;

[0038] 30. Rear longitudinal beam;

[0039] 40. Trailing arm. Detailed Implementation

[0040] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0041] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0042] Combination Figures 1 to 7 In a specific embodiment of this application, a battery pack assembly is provided.

[0043] Specifically, the battery pack assembly includes a battery pack 10 and a mounting bracket assembly 20. The battery pack 10 includes a mounting frame 11, in which a battery is disposed. There are multiple mounting bracket assemblies 20, one end of each mounting bracket assembly 20 is connected to the side wall of the mounting frame 11 in both the width and length directions, and the other end of each mounting bracket assembly 20 is used to connect to the rear longitudinal beam 30 of the vehicle.

[0044] In this embodiment, by connecting one end of multiple mounting bracket assemblies 20 to the side walls of the mounting frame 11 of the battery pack 10 in both the width and length directions, the number of connection points between the battery pack and the rear longitudinal beam of the vehicle body is effectively increased, thereby improving the overall rigidity of the connection structure. This multi-point connection design helps to distribute the load of the battery pack on the vehicle body, reducing the pressure borne by a single connection point, thereby reducing vibration and abnormal noise caused by vehicle body deformation, as well as the vibration response of the vehicle body on bumpy roads. This effectively reduces in-vehicle noise and vibration caused by the vibration of the battery pack 10, and improves NVH performance.

[0045] Furthermore, at least one mounting bracket assembly 20 includes a multi-directional connector 21, an adapter 23, and a mounting bracket 22. One end of the multi-directional connector 21 is connected to the sidewalls of the mounting frame 11 in both the width and length directions. One end of the adapter 23 is connected to the other end of the multi-directional connector 21. One end of the mounting bracket 22 is connected to the other end of the adapter 23, and the other end of the mounting bracket 22 is used to connect to the rear longitudinal beam 30.

[0046] Combination Figure 2As shown, one end of the multi-directional connector 21 is connected to the sidewalls of the mounting frame 11 in both the width and length directions. The multi-directional connector 21 is also connected to the rear end of the mounting frame 11 (when the battery pack 10 is installed on the vehicle, the end closer to the front of the vehicle along the length of the body is the front end of the mounting frame 11, and the end farther from the front of the vehicle along the length of the body is the rear end of the mounting frame 11). Its multi-directional nature ensures a stable connection with the battery pack 10. One end of the adapter 23 is connected to the other end of the multi-directional connector 21, enhancing the transition and coordination between structures. One end of the mounting bracket 22 is connected to the other end of the adapter 23, while the other end is connected to the rear longitudinal beam 30. This design ensures a tight connection between the battery pack 10 and the vehicle body, improving the overall rigidity of the mounting point. The mounting bracket assembly 20, through the interaction between the multi-directional connector 21, the adapter 23, and the mounting bracket 22, effectively disperses the stress borne by the mounting frame 11, avoiding stress concentration that could compress the internal wiring harness. Meanwhile, by connecting with the rear longitudinal beam 30, the high structural rigidity of the rear longitudinal beam 30 is fully utilized, thereby significantly enhancing the rigidity of the rear mounting point of the battery pack 10. This has a positive effect on improving the body modal rigidity, subsystem modes, and overall vehicle NVH performance, especially on optimizing the steering wheel yaw mode and low-frequency road noise peak.

[0047] Furthermore, part of the multi-directional connector 21 extends along the width direction of the mounting frame 11, and another part of the multi-directional connector 21 extends along the length direction of the battery pack 10.

[0048] In this embodiment, the rear portion of the mounting frame 11 optimizes the connection strength and stiffness distribution between the battery pack 10 and the vehicle body through the coordinated design of the multi-directional connector 21, adapter 23, and mounting bracket 22. The multi-directional connector 21 increases the stability of the mounting frame 11 in both the width and length directions, ensuring effective dispersion and resistance to external forces in different dimensions. This design not only enhances the overall rigidity of the battery pack but also helps improve the modal stiffness of the vehicle body. Overall, the rear portion of the battery pack 10 in this embodiment effectively improves the vehicle's NVH performance and safety by enhancing the connection stiffness of each component and dispersing the stress.

[0049] Furthermore, the multi-directional connector 21 includes a first connecting segment 211 and a second connecting segment 212. The first connecting segment 211 extends along the width direction of the mounting frame 11 and has a plurality of first flange structures 2111. The plurality of first flange structures 2111 are arranged at intervals along the circumference of the first connecting segment 211. One end of the first connecting segment 211 is connected to the side wall of the mounting frame 11 in the width direction through the plurality of first flange structures 2111. The adapter 23 is connected to the first connecting segment 211. One end of the second connecting segment 212 is connected to the other end of the first connecting segment 211. The other end of the second connecting segment 212 extends along the length direction of the mounting frame 11 and has a plurality of second flange structures 2121. The plurality of second flange structures 2121 are arranged at intervals along the circumference of the second connecting segment 212. The other end of the second connecting segment 212 is connected to the side wall of the mounting frame 11 in the length direction through the plurality of second flange structures 2121.

[0050] Combination Figure 3 and Figure 4 As shown, the multi-directional connector 21 includes a first connecting segment 211 and a second connecting segment 212. The first connecting segment 211 extends along the width direction of the mounting frame 11, and one end of it is connected to the side wall of the mounting frame 11 in the width direction through multiple circumferentially spaced first flange structures 2111, while the adapter 23 is connected to its other end. One end of the second connecting segment 212 is connected to the other end of the first connecting segment 211, and it extends along the length direction of the mounting frame 11. Its other end is connected to the side wall of the mounting frame 11 in the length direction through multiple circumferentially spaced second flange structures 2121. This arrangement enables the mounting frame 11 to be effectively connected and supported in multiple directions, enhancing the stability and rigidity of the mounting structure. It also expands the contact area with the mounting frame 11, which helps to disperse stress and avoids the pressure that local stress concentration may cause to the internal wiring harness of the battery pack 10. Through the synergistic effect of the first connecting segment 211 and the second connecting segment 212, the overall rigidity of the battery pack mounting structure can be effectively improved, its dynamic performance optimized, and it contributes to improving the NVH performance of the entire vehicle.

[0051] In one embodiment of this application, the multi-directional connector 21 is made of 1.2mm thick DC51D+Z steel plate and is formed by single-process stamping. Multiple first flange structures 2111 are welded to the sidewalls of the mounting frame 11 in the width direction, and multiple second flange structures 2121 are welded to the sidewalls of the mounting frame 11 in the length direction. This allows the force to be more evenly distributed along the width and length directions of the mounting frame 11 when the battery pack is subjected to external impact, reducing local stress concentration in the battery pack, avoiding damage to the battery pack structure, and improving the durability and safety of the battery pack. Compared with other complex connection methods, such as riveting or bolting, the welded flange structure simplifies the production process, reduces assembly time, and also reduces material and labor costs. While enhancing the rigidity of the connection part, it also avoids direct compression of the internal wiring harness of the battery pack 10, improving the reliability of the connection.

[0052] Furthermore, the adapter 23 includes an adapter bracket 230, a reinforcing plate 231, and an extension section 232. The adapter bracket 230 is connected to the multi-directional connector 21. Part of the adapter bracket 230 extends away from the multi-directional connector 21 along the thickness direction of the mounting frame 11, and another part of the adapter bracket 230 extends away from the mounting frame 11 along the length direction of the mounting frame 11. The reinforcing plate 231 is connected to the adapter bracket 230 and is located on the side of the adapter bracket 230 away from the mounting frame 11. There are multiple reinforcing plates 231, which are spaced apart along the thickness direction of the mounting frame 11. One end of the extension section 232 is connected to the other end of the adapter bracket 230, and the other end of the extension section 232 extends away from the adapter bracket 230 along the width direction of the mounting frame 11. The extension section 232 is connected to the mounting bracket 22.

[0053] In this embodiment, the adapter 23 mainly includes an adapter bracket 230. One end of the adapter bracket 230 is connected to the multi-directional connector 21. Part of the adapter bracket 230 extends along the thickness direction of the mounting frame 11, and part of the adapter bracket 230 extends along the length direction of the mounting frame 11, thereby distributing and optimizing the load borne during installation. A reinforcing plate 231 is connected to the adapter bracket 230, and multiple reinforcing plates 231 are spaced apart along the thickness direction of the mounting frame 11, enhancing the rigidity of the overall structure and thus improving the stability and load-bearing capacity of the adapter bracket 230. One end of the extension section 232 is connected to the other end of the adapter bracket 230, and the extension section 232 extends along the width direction of the mounting frame 11. The other end of the extension section 232 is connected to the mounting bracket 22, making the structure of the adapter 23 resemble an "L" shape, which is beneficial for achieving a tight fit between the battery pack and the vehicle body longitudinal beam. By setting up the reinforcing plate 231 and the extension section 232, the fatigue resistance and NVH performance of the battery pack mounting structure are improved, which has a positive effect on improving the overall rigidity of the vehicle body and the ability to reduce vibration and noise.

[0054] In one embodiment of this application, the adapter 23 is cast from A380 aluminum alloy. Its L-shaped design, combined with the transverse reinforcing plate 231, enhances the stability and strength of the structure. After implementing this solution, the structural rigidity of the rear mounting point of the battery pack 10 is improved. Simultaneously, due to the introduction of the adapter 23, the battery pack 10 can be better integrated into the vehicle body structure, participating in the load-bearing process and significantly contributing to the improvement of vehicle body modal stiffness and NVH performance. Furthermore, the design of the adapter 23 facilitates production and assembly, reducing manufacturing difficulty.

[0055] Furthermore, the mounting bracket 22 includes a top plate 225, a first side plate 221, a second side plate 222, a third side plate 223, and a fourth side plate 224. The top plate 225 is connected to the adapter 23. The first side plate 221 is connected to the top plate 225, and the end of the first side plate 221 away from the top plate 225 is used to connect to the rear longitudinal beam 30. The second side plate 222 is connected to the top plate 225 and the first side plate 221. The end of the second side plate 222 away from the top plate 225 is used to connect to the rear longitudinal beam 30. The third side plate 223 is connected to the top plate 225 and the second side plate 222; the fourth side plate 224 is connected to the top plate 225, the third side plate 223, and the first side plate 221, and the end of the fourth side plate 224 away from the top plate 225 is used to connect to the rear longitudinal beam 30; wherein, the top plate 225, the first side plate 221, the second side plate 222, the third side plate 223, and the fourth side plate 224 are arranged to form a box-shaped structure with an opening on one side.

[0056] Combination Figures 5 to 7 As shown, the top plate 225 and the adapter 23 are connected by screws and bolts. The top plate 225, the first side plate 221, the second side plate 222, the third side plate 223 and the fourth side plate 224 are arranged into a box-shaped structure with an opening on one side, which enhances the strength and rigidity of the mounting bracket 22, effectively reduces vibration and noise, optimizes the vehicle's NVH performance, reduces vibration and noise caused by the battery pack during driving, and improves the driving experience.

[0057] In one specific embodiment of this application, the mounting bracket 22 is made of 1.5mm thick DC51D+Z steel plate, which is first stamped and then self-welded. Specifically, one leg of the first side plate 221 is bent and welded to the second side plate 222, and the other leg of the first side plate 221 is bent and welded to the fourth side plate 224; one leg of the third side plate 223 is bent and welded to the second side plate 222, and the other leg of the third side plate 223 is bent and welded to the fourth side plate 224; the top plate 225 and the extension section 232 are connected by screws and bolts, and the end of the fourth side plate 224 away from the top plate 225 is welded to the rear longitudinal beam 30. This arrangement improves the dynamic stiffness and overall rigidity of the mounting point, ensuring a firm connection between the battery pack 10 and the rear longitudinal beam 30 of the vehicle body.

[0058] Furthermore, the first side plate 221 has a third flange structure 2211 at the end away from the top plate 225. The third flange structure 2211 extends away from the first side plate 221 along the length direction of the top plate 225. The first side plate 221 is connected to the rear longitudinal beam 30 through the third flange structure 2211. The second side plate 222 has a fourth flange structure 2221 at the end away from the top plate 225. The fourth flange structure 2221 extends away from the second side plate 222 along the width direction of the top plate 225. The second side plate 222 is connected to the rear longitudinal beam 30 through the fourth flange structure 2221.

[0059] Combination Figure 6 As shown, the third flange structure 2211 extends away from the first side plate 221 along the length of the top plate 225, and the fourth flange structure 2221 extends away from the second side plate 222 along the width of the top plate 225. This increases the interface size between the first and second side plates 221 and the rear longitudinal beam 30, which not only improves the stability of the connection but also enhances the rigidity of the entire mounting bracket 22. When the vehicle suffers a side collision, the third flange structure 2211 and the fourth flange structure 2221 can absorb more impact energy, reduce the impact force directly borne by the battery pack, protect the battery from damage, and thus improve the overall passive safety of the vehicle.

[0060] Furthermore, the length of the fourth side plate 224 is greater than the length of the third side plate 223, and the fourth side plate 224 has a reinforcing rib 2241, which is arranged along the length direction of the fourth side plate 224.

[0061] Combination Figure 6 As shown, the fourth side plate 224 is longer than the third side plate 223, and a reinforcing rib 2241 along its length is provided thereon, which enhances the resistance of the fourth side plate to dynamic loads in order to cope with the lateral forces generated when the vehicle turns or accelerates. The presence of the reinforcing rib 2241 increases the bending resistance and torsional resistance of the fourth side plate 224, ensuring the stability of the battery pack 10 under various operating conditions.

[0062] Furthermore, there are two mounting bracket assemblies 20, both of which are located on the same side of the mounting frame 11, and the two mounting bracket assemblies 20 are spaced apart along the width direction of the mounting frame 11. The two mounting bracket assemblies 20 are respectively located at both ends of the side wall of the mounting frame 11 along the width direction of the mounting frame 11.

[0063] Combination Figure 1 As shown, there are two mounting bracket assemblies 20, which are spaced apart along the width direction of the mounting frame 11 and located at both ends of the sidewall of the mounting frame 11 in the width direction. By increasing the distance between the two mounting bracket assemblies 20 in the width direction of the battery pack 10, the structural rigidity of the battery pack 10 itself is effectively utilized to enhance the rigidity of the vehicle body. Compared with a small-pitch mounting point arrangement, the large-pitch mounting structure can better maintain the stability of the vehicle body when subjected to external excitations, such as uneven road surfaces or wind resistance changes during high-speed driving. Through the synergistic effect of the battery pack 10 and the vehicle body, the modal stiffness of the vehicle body is significantly improved. This increase in stiffness means that the vehicle body can more effectively resist deformation, reduce vibration and noise in dynamic environments, and thus improve the NVH performance of the vehicle. At the same time, the large-pitch mounting point distribution can also distribute the weight of the battery pack 10, avoid structural fatigue caused by local overload, extend the service life of the vehicle and battery system, provide more stable support for the battery pack 10, reduce the risk of battery displacement due to collision, and enhance driving safety.

[0064] In another embodiment of this application, a vehicle is also provided, including the battery pack assembly in the above embodiment, including a rear longitudinal beam 30 and a trailing arm 40, wherein the mounting frame 11 is connected to the rear longitudinal beam 30 via a mounting bracket assembly 20; the trailing arm 40 is connected to the rear longitudinal beam 30, and the mounting bracket assembly 20 is disposed adjacent to the trailing arm 40.

[0065] In this embodiment, the vehicle includes a battery pack assembly, a rear longitudinal beam 30, and a trailing arm 40. The rear longitudinal beam 30 is connected to the mounting frame 11 via a mounting bracket assembly 20, while the trailing arm 40 is connected to the rear longitudinal beam 30. The connection point between the mounting bracket assembly 20 and the mounting frame 11 is located close to the trailing arm 40, which strengthens the structural strength near the trailing arm 40 and contributes to the dynamic stiffness of the trailing arm 40, as well as the dynamic stiffness of the nearby rear shock absorber point and the rear shock absorber spring pad. In addition, the sill longitudinal beam of the existing installation scheme has a significant impact on the side impact of the vehicle. Compared with the existing scheme in which the mounting bracket assembly 20 is set on both sides of the battery pack 10 and connected to the sill longitudinal beam, the installation of the battery pack 10 at the sill longitudinal beam will result in excessive installation strength, which will affect the energy absorption and collapse effect at the sill longitudinal beam. In this application, the connection point between the mounting bracket assembly 20 and the mounting frame 11 is set close to the trailing arm 40, and the mounting bracket assembly 20 is connected to the rear end of the mounting frame 11 (when the battery pack 10 is installed on the vehicle, the end closer to the front of the vehicle along the length of the vehicle body is the front end of the mounting frame 11, and the end farther away from the front of the vehicle along the length of the vehicle body is the rear end of the mounting frame 11), which helps to improve the NVH performance of the whole vehicle.

[0066] As can be seen from the above description, the embodiments of this application achieve the following technical effects:

[0067] 1) By optimizing the rear mounting structure of the battery pack, the steering system mode and the bending mode of the body-in-white were improved, and the low-frequency road noise peak was reduced, which effectively improved the NVH performance of the whole vehicle and enhanced the comfort of passengers.

[0068] 2) Multi-directional connector 21, adapter 23 and mounting bracket 22 are provided. By adjusting the position and structure of the components, they can be adapted to different wheelbase models, realizing the reusability of the electrification platform and improving the reusability and economic benefits of the design.

[0069] 3) Utilize chassis space to balance vehicle weight: By providing a mounting bracket assembly 20 at the rear of the battery pack 10 and the rear longitudinal beam 30 of the vehicle body, the chassis space is maximized, avoiding the problem of the weight of the battery pack 10 being concentrated at the front, which helps to achieve better dynamic balance and handling performance of the whole vehicle.

[0070] 4) The mounting bracket assembly 20 is positioned near the tow arm 40, which significantly improves the amount of side impact intrusion into the occupant position and enhances the vehicle's safety protection capability in side collisions.

[0071] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0072] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0073] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0074] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0075] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, read-only memory (ROM), random access memory (RAM), portable hard drive, magnetic disk, or optical disk.

[0076] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A battery pack assembly, characterized in that, include: A battery pack (10) includes a mounting frame (11) in which a battery is disposed; Mounting bracket assembly (20), there are multiple mounting bracket assemblies (20), one end of each mounting bracket assembly (20) is connected to the side wall of the mounting frame (11) in both the width and length directions, and the other end of each mounting bracket assembly (20) is used to connect to the rear longitudinal beam (30) of the vehicle.

2. The battery pack assembly according to claim 1, characterized in that, At least one of the mounting bracket assemblies (20) includes: A multi-directional connector (21) is provided, one end of which is connected to the sidewalls of the mounting frame (11) in both the width and length directions. Adapter (23), one end of which is connected to the other end of the multi-directional connector (21); Mounting bracket (22), one end of which is connected to the other end of the adapter (23), and the other end of which is used to connect to the rear longitudinal beam (30).

3. The battery pack assembly according to claim 2, characterized in that, One portion of the multi-directional connector (21) extends along the width direction of the mounting frame (11), and the other portion of the multi-directional connector (21) extends along the length direction of the battery pack (10).

4. The battery pack assembly according to claim 3, characterized in that, The multi-directional connector (21) includes: The first connecting segment (211) extends along the width direction of the mounting frame (11). The first connecting segment (211) has a plurality of first flange structures (2111). The plurality of first flange structures (2111) are arranged at intervals along the circumference of the first connecting segment (211). One end of the first connecting segment (211) is connected to the side wall of the mounting frame (11) in the width direction through the plurality of first flange structures (2111). The adapter (23) is connected to the first connecting segment (211). The second connecting segment (212) has one end connected to the other end of the first connecting segment (211), and the other end of the second connecting segment (212) extends along the length direction of the mounting frame (11). The second connecting segment (212) has a plurality of second flange structures (2121), which are spaced apart circumferentially along the second connecting segment (212). The other end of the second connecting segment (212) is connected to the side wall of the mounting frame (11) along the length direction through the plurality of second flange structures (2121).

5. The battery pack assembly according to claim 2, characterized in that, The adapter (23) includes: The adapter bracket (230) is connected at one end to the multi-directional connector (21). A portion of the adapter bracket (230) extends away from the multi-directional connector (21) along the thickness direction of the mounting frame (11), while another portion of the adapter bracket (230) extends away from the mounting frame (11) along the length direction of the mounting frame (11). A reinforcing plate (231) is connected to the adapter bracket (230). The reinforcing plate (231) is located on the side of the adapter bracket (230) away from the mounting frame (11). There are multiple reinforcing plates (231), and the multiple reinforcing plates (231) are arranged at intervals along the thickness direction of the mounting frame (11). An extension section (232) is provided, one end of which is connected to the other end of the adapter bracket (230), and the other end of which extends away from the adapter bracket (230) along the width direction of the mounting frame (11). The extension section (232) is connected to the mounting bracket (22).

6. The battery pack assembly according to claim 2, characterized in that, The mounting bracket (22) includes: Top plate (225), which is connected to the adapter (23); The first side plate (221) is connected to the top plate (225), and the end of the first side plate (221) away from the top plate (225) is used to connect to the rear longitudinal beam (30); The second side plate (222) is connected to the top plate (225) and the second side plate (222) is connected to the first side plate (221). The end of the second side plate (222) away from the top plate (225) is used to connect to the rear longitudinal beam (30). The third side plate (223) is connected to the top plate (225) and the third side plate (223) is connected to the second side plate (222); The fourth side plate (224) is connected to the top plate (225), the fourth side plate (224) is connected to the third side plate (223), the fourth side plate (224) is connected to the first side plate (221), and the end of the fourth side plate (224) away from the top plate (225) is used to connect to the rear longitudinal beam (30); The top plate (225), the first side plate (221), the second side plate (222), the third side plate (223), and the fourth side plate (224) are arranged to form a box-shaped structure with an opening on one side.

7. The battery pack assembly according to claim 6, characterized in that, The first side plate (221) has a third flange structure (2211) at one end away from the top plate (225). The third flange structure (2211) extends away from the first side plate (221) along the length direction of the top plate (225). The first side plate (221) is connected to the rear longitudinal beam (30) through the third flange structure (2211); and / or, The second side plate (222) has a fourth flange structure (2221) at one end away from the top plate (225). The fourth flange structure (2221) extends away from the second side plate (222) along the width direction of the top plate (225). The second side plate (222) is connected to the rear longitudinal beam (30) through the fourth flange structure (2221).

8. The battery pack assembly according to claim 6 or 7, characterized in that, The length of the fourth side plate (224) is greater than the length of the third side plate (223), and / or, The fourth side plate (224) has a reinforcing rib (2241) which is arranged along the length direction of the fourth side plate (224).

9. The battery pack assembly according to claim 1, characterized in that, There are two mounting bracket assemblies (20), both of which are located on the same side of the mounting frame (11), and the two mounting bracket assemblies (20) are spaced apart along the width direction of the mounting frame (11), and / or, the two mounting bracket assemblies (20) are respectively located at both ends of the side wall of the mounting frame (11) along the width direction of the mounting frame (11).

10. A vehicle comprising a battery pack assembly according to any one of claims 1 to 9, characterized in that, include: The rear longitudinal beam (30) is connected to the mounting frame (11) via the mounting bracket assembly (20); The trailing arm (40) is connected to the rear longitudinal beam (30), and the mounting bracket assembly (20) is disposed adjacent to the trailing arm (40).

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