Vehicle body assembly for assembling battery pack and vehicle

Abstract

The utility model discloses a vehicle body assembly for assembling a battery pack and a vehicle, and relates to the field of vehicles. The assembly frame comprises a plurality of first assembly structures, the plurality of first assembly structures are fixedly arranged on the two chassis girders respectively, and the plurality of first assembly structures are all used for installing the battery pack; each chassis girder comprises an installation part and a first extension part, the installation parts extend in the height direction of the vehicle body assembly, the multiple first assembly structures are fixedly arranged on the installation parts of the two chassis girders correspondingly, and the first extension parts extend in the width direction of the vehicle body assembly and extend in the height direction of the vehicle body assembly. The upper end of the mounting part is connected with the first extension part and located between the two ends of the first extension part, and part of the first extension part is located over the corresponding first assembly structure; or, the chassis girder is a rectangular beam. Therefore, the structural form of the chassis girder is optimally designed, the chassis girder can bear large impact force after being combined with the assembly frame, and the use reliability is good.

Description

[0001] Cross-reference to related applications

[0002] This application is based on and claims priority to Chinese Patent Application No. 202422159700.7, filed on September 2, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This utility model relates to the field of vehicles, and in particular to a body component for assembling a battery pack and a vehicle. Background Technology

[0004] In related technologies, some new energy heavy-duty commercial trucks adopt a bottom-mounted assembly structure to provide mounting points for battery packs in order to cope with their huge power demand and harsh working environment. The assembly structure is fixed to the main beam to improve structural strength. However, the current structural design of new energy heavy-duty commercial trucks using this technical solution is unreasonable. The combination of the assembly structure and the main beam still cannot withstand large impacts, resulting in poor reliability. Utility Model Content

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this invention is to provide a vehicle body component for assembling a battery pack, in which the chassis beam and assembly frame, when combined, can withstand significant impact forces and exhibit superior reliability.

[0006] This utility model further proposes a vehicle.

[0007] According to the present invention, a vehicle body assembly for assembling a battery pack includes: two chassis beams, the two chassis beams being opposite to and spaced apart along the width direction of the vehicle body assembly, and the two chassis beams extending along the length direction of the vehicle body assembly; an assembly frame and a battery pack, the assembly frame including: a plurality of first assembly structures, the plurality of first assembly structures being respectively fixed to the two chassis beams, and the plurality of first assembly structures being used to install the battery pack; the chassis beams including: a mounting portion and a first extension portion, the mounting portion extending along the height direction of the vehicle body assembly, the plurality of first assembly structures being respectively fixed to the mounting portion of the two chassis beams, the first extension portion extending along the width direction of the vehicle body assembly, and along the height direction of the vehicle body assembly, the upper end of the mounting portion connecting to the first extension portion and the upper end of the mounting portion being located between the two ends of the first extension portion, and a portion of the first extension portion being located directly above the corresponding first assembly structure; or, the chassis beams are constructed as rectangular beams.

[0008] According to the present invention, the vehicle body component for assembling a battery pack optimizes the structural design of the chassis beam, enabling the chassis beam and assembly frame to withstand greater impact forces and improve reliability.

[0009] In some examples of this utility model, the chassis beam further includes a second extension, which extends along the width direction of the body assembly and the lower end of the mounting portion is connected to the second extension along the height direction of the body assembly.

[0010] In some examples of this invention, the end of the second extension that is away from the other chassis beam is connected to the lower end of the mounting portion.

[0011] In some examples of this utility model, the lower end of the mounting portion is located between the two ends of the second extension portion.

[0012] In some examples of this utility model, the first extension includes two first sub-extensions, which are spaced apart along the width direction of the vehicle body assembly, and one end of each of the two first sub-extensions is connected to the mounting portion; the second extension includes two second sub-extensions, which are spaced apart along the width direction of the vehicle body assembly, and one end of each of the two second sub-extensions is connected to the mounting portion.

[0013] In some examples of this utility model, the chassis beam is constructed as a rectangular beam, and the rectangular beam has a cavity extending along the length direction of the vehicle body assembly.

[0014] In some examples of this utility model, the assembly frame further includes: a support structure along the width direction of the body assembly, the first assembly structure being located on the outside of the corresponding chassis beam, the support structure being connected to both chassis beams and located between the two chassis beams, and along the width direction of the body assembly, the support structure corresponding to the first assembly structure.

[0015] In some examples of this utility model, the bracket structure has a first mating hole at one end near the chassis beam, the chassis beam has a second mating hole, and the first assembly structure has a third mating hole at one end near the corresponding chassis beam. A first fastener is inserted through the first mating hole, the second mating hole, and the third mating hole to fix the first assembly structure, the bracket structure, and the chassis beam together.

[0016] In some examples of this utility model, the assembly frame further includes: a plurality of connecting brackets, the plurality of connecting brackets being respectively fixed to two chassis beams, each connecting bracket having a first plate and a second plate, the first plate being connected to the second plate, the first plate being fixedly connected to the corresponding chassis beam and the corresponding first assembly structure, and the second plate being fixedly connected to the bracket structure.

[0017] The vehicle according to this utility model includes the above-described body components for mounting a battery pack.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is an assembly diagram of the chassis beam, assembly frame, and battery pack according to an embodiment of the present utility model (the cross-sectional structure of the chassis beam is similar to an "I" shape).

[0021] Figure 2 This is an assembly diagram of the chassis beam and assembly frame according to an embodiment of the present utility model (the cross-sectional structure of the chassis beam is similar to an "I" shape);

[0022] Figure 3 This is a schematic diagram of the chassis beam and support structure according to an embodiment of the present utility model (the cross-sectional structure of the chassis beam is similar to an "I" shape);

[0023] Figure 4 This is a schematic diagram of the chassis beam according to an embodiment of the present utility model (the cross-sectional structure of the chassis beam is similar to an "I" shape);

[0024] Figure 5 This is a schematic diagram of the chassis beam according to an embodiment of the present utility model (the chassis beam is constructed as a rectangular beam);

[0025] Figure 6 This is an assembly diagram of the chassis beam and assembly frame according to an embodiment of the present utility model (the cross-sectional structure of the chassis beam is T-shaped).

[0026] Figure 7 This is an assembly diagram of the chassis beam and assembly frame according to an embodiment of the present utility model (the cross-sectional structure of the chassis beam is J-shaped).

[0027] Figure 8This is a schematic diagram of the support structure according to an embodiment of the present utility model;

[0028] Figure 9 This is a schematic diagram of a floating nut according to an embodiment of the present invention.

[0029] Figure label:

[0030] Chassis beam 10; mounting part 11; first extension 12; first sub-extension 121; second extension 13; second sub-extension 131; cavity 14; second mating hole 15;

[0031] Assembly frame 20; first assembly structure 21; second weight reduction hole 211; bracket structure 22; first weight reduction hole 221; positioning part 222; first mating hole 223; connecting bracket 23; first plate 231; second plate 232;

[0032] Battery pack 30;

[0033] First fastener 41; Second fastener 42; Third fastener 43;

[0034] Floating nut 60; Adjustable space 6; Nut box 61; Welded nut 62; Floating square nut 63. Detailed Implementation

[0035] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0036] The following is for reference. Figures 1-9 This invention describes a vehicle body assembly and a vehicle for assembling a battery pack according to embodiments of the present invention.

[0037] like Figures 1-9 As shown, the vehicle body assembly according to an embodiment of the present utility model includes: two chassis beams 10 and an assembly frame 20.

[0038] Along the width direction of the vehicle (i.e.) Figure 1 (As shown in the Y direction), two chassis beams 10 are arranged opposite each other and spaced apart, and both chassis beams 10 extend along the length direction of the vehicle. The width, length, and height directions of the vehicle are the same as the width, length, and height directions of the body assembly.

[0039] The assembly frame 20 includes a plurality of first assembly structures 21, which are respectively fixed to two chassis beams 10. In some embodiments of this application, the plurality of first assembly structures 21 are fixed to the two chassis beams 10 by welding. In some embodiments of this application, the plurality of first assembly structures 21 are fixed to the two chassis beams 10 by bolting. In some embodiments of this application, the plurality of first assembly structures 21 are located on the outer side of the corresponding chassis beam 10 (i.e., on the side of the corresponding chassis beam 10 away from the other chassis beam 10).

[0040] Multiple first assembly structures 21 are used to install the battery pack 30. As some embodiments of this application, the battery pack 30 can be detachably assembled with multiple first assembly structures 21. For example, the battery pack 30 is assembled with multiple first assembly structures 21 by means of bolt connection, or the battery pack 30 is assembled with multiple first assembly structures 21 by means of snap connection.

[0041] As some embodiments of this application, such as Figure 6 As shown, the chassis beam 10 includes: a mounting portion 11 and a first extension portion 12, wherein, along the height direction of the vehicle (i.e., Figure 1 (As shown in the Z direction), the mounting portion 11 extends and is provided, and a plurality of first assembly structures 21 are respectively fixed to the mounting portions 11 of the two chassis beams 10. That is, among the plurality of first assembly structures 21, some first assembly structures 21 are fixed to the mounting portion 11 of one chassis beam 10, and other first assembly structures 21 are fixed to the mounting portion 11 of the other chassis beam 10. As some embodiments of this application, the plurality of first assembly structures 21 are all provided on the outside of the mounting portion 11 of the corresponding chassis beam 10 (that is, on the side of the corresponding chassis beam 10 away from the other chassis beam 10).

[0042] Along the width direction of the vehicle (i.e.) Figure 1 The first extension 12 extends along the height direction of the vehicle (as shown in the Y direction). Figure 1 (As shown in the Z direction), the mounting portion 11 has an upper end and a lower end. The upper end of the mounting portion 11 is connected to the first extension portion 12. In some embodiments of this application, the upper end of the mounting portion 11 is welded to the first extension portion 12. In some embodiments of this application, the mounting portion 11 and the first extension portion 12 are integrally formed. Furthermore, the upper end of the mounting portion 11 is located between the two ends of the first extension portion 12. Specifically, the connection between the mounting portion 11 and the first extension portion 12 is located between the two ends of the first extension portion 12. In other words, the mounting portion 11 is not connected to the end of the first extension portion 12. This can be understood as the cross-sectional structure of the chassis beam 10 being approximately "T" shaped.

[0043] The first extension 12 is located directly above the corresponding first assembly structure 21. Specifically, a plane is defined that is perpendicular to the height direction of the vehicle (i.e., Figure 1 The Z-direction shown is perpendicular to the plane, meaning the normal to this plane is perpendicular to the vehicle's height direction (i.e., the Z-direction). Figure 1 The Z-direction shown is parallel to the plane. The orthographic projection of a portion of the first extension 12 on the plane overlaps with the orthographic projection of the corresponding first assembly structure 21 on the plane, and the height of a portion of the first extension 12 is higher than that of the first assembly structure 21.

[0044] It should be noted that when the battery pack 30 is subjected to a vertical impact, the impact force will be transmitted through the battery pack 30 to the multiple first assembly structures 21 connected to the battery pack 30. Since the cross-sectional structure of the chassis beam 10 is approximately "T"-shaped, and part of the first extension 12 is located directly above the corresponding first assembly structure 21, the chassis beam 10 can extend along the height direction of the vehicle (i.e.,...). Figure 1 The chassis beam 10 (in the Z direction shown) reliably withstands and transmits impact forces, thereby enabling the chassis beam 10 to withstand greater impact forces after being combined with the assembly frame 20, and reducing the risk of the battery pack 30 intruding into the passenger compartment, resulting in better reliability.

[0045] As some embodiments of this application, such as Figure 5 As shown, the chassis beam 10 is constructed as a rectangular beam. In some embodiments of this application, the chassis beam 10 is constructed as a solid rectangular beam; in other embodiments, it is constructed as a hollow rectangular beam. In some embodiments, the rectangular beam can be formed by interlocking and welding two beams with a U-shaped cross-section, or by welding four plates together, or by integrally die-casting. By constructing the chassis beam 10 as a rectangular beam, the structural strength of the chassis beam 10 can be significantly improved, enabling it to withstand greater impact forces after being combined with the assembly frame 20, resulting in better reliability.

[0046] Therefore, by optimizing the structural design of the chassis beam 10, this application enables the chassis beam 10 to withstand greater impact forces after being combined with the assembly frame 20, resulting in better reliability and improved NVH (Noise, Vibration, Harshness) and durability performance of the vehicle chassis.

[0047] In some embodiments of this utility model, such as Figures 1-4 , Figure 7 As shown, the chassis beam 10 also includes: a second extension 13, extending along the width direction of the vehicle (i.e., Figure 1 The second extension 13 extends along the height direction of the vehicle (as shown in the Y direction). Figure 1(As shown in the Z direction), the mounting portion 11 has an upper end and a lower end. The lower end of the mounting portion 11 is connected to the second extension portion 13. In some embodiments of this application, the lower end of the mounting portion 11 is welded to the second extension portion 13. In some embodiments of this application, the mounting portion 11 and the second extension portion 13 are integrally formed. That is to say, the cross-sectional structure of the chassis beam 10 is J-shaped or I-shaped.

[0048] By connecting the lower end of the mounting section 11 to the second extension section 13, the structural strength of the chassis beam 10 can be significantly improved, thereby enabling the chassis beam 10 to more reliably withstand and transmit impact forces, and further reducing the risk of the battery pack 30 intruding into the passenger compartment, resulting in better reliability.

[0049] In some embodiments of this utility model, such as Figure 7 As shown, the end of the second extension 13 furthest from the other chassis beam 10 is connected to the lower end of the mounting portion 11. Specifically, along the width direction of the vehicle (i.e., Figure 1 (As shown in the Y direction), the second extension 13 has one end close to the other chassis beam 10 and one end away from the other chassis beam 10. The end of the second extension 13 away from the other chassis beam 10 is connected to the lower end of the mounting part 11. That is, the cross-sectional structure of the chassis beam 10 is J-shaped. This configuration makes the chassis beam 10 easier to manufacture, reduces the manufacturing difficulty of the chassis beam 10, and gives the chassis beam 10 higher structural strength, so that the chassis beam 10 can more reliably withstand and transmit impact forces, which is beneficial to improving the NVH (Noise, Vibration, Harshness) and durability performance of the vehicle chassis.

[0050] In some embodiments of this utility model, such as Figures 1-4 As shown, the lower end of the mounting portion 11 is located between the two ends of the second extension 13. Specifically, the connection between the mounting portion 11 and the second extension 13 is located between the two ends of the second extension 13; in other words, the mounting portion 11 is not connected to the end of the second extension 13. This can be understood as the chassis beam 10 having a cross-sectional structure similar to an "I". As some embodiments of this application, the chassis beam 10 with a cross-sectional structure similar to an "I" can be formed by splicing (e.g., welding) two beams with a cross-sectional structure similar to a "C".

[0051] This configuration allows the chassis beam 10 to have higher structural strength, enabling it to more reliably withstand and transmit impact forces. It also further reduces the risk of the battery pack 30 intruding into the passenger compartment, resulting in better reliability and improving the NVH (Noise, Vibration, Harshness) and durability of the vehicle chassis.

[0052] In some embodiments of this utility model, such as Figures 1-4 As shown, the first extension 12 includes two first sub-extensions 121, the two first sub-extensions 121 being along the width direction of the vehicle (i.e., Figure 1 The first sub-extensions 121 are spaced apart in the Y direction as shown, and the opposite ends of the two first sub-extensions 121 are connected to the mounting portion 11. Specifically, each first sub-extension 121 has an end close to the other first sub-extension 121 and an end away from the other first sub-extension 121, and the end of each first sub-extension 121 close to the other first sub-extension 121 is connected to the upper end of the mounting portion 11.

[0053] The second extension 13 includes: two second sub-extensions 131, the two second sub-extensions 131 being along the width direction of the vehicle (i.e. Figure 1 The two second sub-extensions 131 are spaced apart in the Y direction as shown, and the opposite ends of each second sub-extension 131 are connected to the mounting portion 11. Specifically, each second sub-extension 131 has an end close to the other second sub-extension 131 and an end away from the other second sub-extension 131, and the end of each second sub-extension 131 close to the other second sub-extension 131 is connected to the lower end of the mounting portion 11.

[0054] As some embodiments of this application, the chassis beam 10 with an I-shaped cross-section can be formed by splicing two beams with a C-shaped cross-section. Specifically, the mounting part 11 may include two mounting sub-parts, which are located along the width direction of the vehicle (i.e., Figure 1 The mounting sub-sections are arranged in the Y direction as shown, and one of the mounting sub-sections, together with a corresponding first sub-extension 121 and a corresponding second sub-extension 131, are constructed as a C-shaped beam. The other mounting sub-section, together with a corresponding first sub-extension 121 and a corresponding second sub-extension 131, are constructed as another C-shaped beam. The mounting sub-sections of the two C-shaped beams are spliced ​​(e.g., welded) to form a chassis beam 10 with an I-shaped cross-section.

[0055] This design makes the structure of the chassis beam 10 reasonable, facilitates its manufacture, reduces its manufacturing difficulty, improves its production efficiency, and gives it high structural strength, enabling it to reliably withstand and transmit impact forces, resulting in better reliability.

[0056] In some embodiments of this utility model, such as Figures 1-4 As shown, the first extension 12 and the second extension 13 are symmetrically arranged. Specifically, the first extension 12 and the second extension 13 are symmetrically arranged with respect to the width direction of the vehicle (i.e., ...). Figure 1 The first extension 12 and the second extension 13 are symmetrically arranged in the Y direction. By splicing two structurally identical "C"-shaped beams into a chassis beam 10 with an "I"-shaped cross-section, the manufacturing difficulty of the chassis beam 10 can be significantly reduced and the production efficiency of the chassis beam 10 can be significantly improved.

[0057] In some embodiments of this utility model, such as Figure 5 As shown, the chassis beam 10 is constructed as a rectangular beam, and the rectangular beam has a cavity 14 extending along the length direction of the vehicle; that is, the chassis beam 10 is constructed as a hollow rectangular beam. As some embodiments of this application, the rectangular beam can be formed by interlocking and welding two beams with a cross-section similar to a "U" shape, or the rectangular beam can be formed by welding four plates together, or the rectangular beam can be integrally die-cast.

[0058] By incorporating a cavity 14 extending along the length of the vehicle into the rectangular beam, when the battery pack 30 is impacted and the impact force is transmitted to the chassis beam 10, the chassis beam 10 can collapse to absorb energy and reliably absorb the impact force to protect the occupants in the passenger compartment, thereby improving the vehicle's safety performance.

[0059] In some embodiments of this utility model, such as Figures 1-3 , Figures 6-8 As shown, the assembly frame 20 also includes: a support structure 22, along the width direction of the vehicle (i.e., Figure 1 (As shown in the Y direction), the first assembly structure 21 is located on the outside of the corresponding chassis beam 10 (i.e., the side of the corresponding chassis beam 10 away from the other chassis beam 10). The bracket structure 22 is connected to both chassis beams 10 and is located between the two chassis beams 10. As some embodiments of this application, the bracket structure 22 is fixed to the two chassis beams 10 by bolt connection. As some embodiments of this application, the bracket structure 22 is fixed to the two chassis beams 10 by welding connection.

[0060] Along the width direction of the vehicle (i.e.) Figure 1As shown in the Y direction), the bracket structure 22 corresponds to the first assembly structure 21. Specifically, a plane is defined that corresponds to the width direction of the vehicle (i.e., the Y direction). Figure 1 The plane is perpendicular to the Y-direction shown, meaning the normal to this plane is perpendicular to the width direction of the vehicle (i.e., the Y-direction shown). Figure 1 As shown in the Y direction, the support structure 22 and the first assembly structure 21 have an overlapping area in the plane. This arrangement can significantly improve the structural strength of the chassis beam 10 and the assembly frame 20 after they are combined, so that the chassis beam 10 and the assembly frame 20 can withstand a large lateral impact force and have excellent reliability.

[0061] In some embodiments of this utility model, such as Figure 2 and Figure 3 As shown, the bracket structure 22 has a first mating hole 223 at one end near the chassis beam 10, the chassis beam 10 has a second mating hole 15, and the first assembly structure 21 has a third mating hole at one end near the corresponding chassis beam 10. The first fastener 41 passes through the first mating hole 223, the second mating hole 15, and the third mating hole to fix the first assembly structure 21, the bracket structure 22, and the chassis beam 10 together.

[0062] The bracket structure 22 has a first mating hole 223 near the end of the chassis beam 10, a second mating hole 15 on the chassis beam 10, a third mating hole near the end of the first assembly structure 21 near the corresponding chassis beam 10, and a first fastener 41, all of which are identical in number and correspond one-to-one. The first fastener 41 passes through the corresponding first mating hole 223, the corresponding second mating hole 15, and the corresponding third mating hole to fix the first assembly structure 21, the bracket structure 22, and the chassis beam 10 together. As some embodiments of this application, the first fastener 41 passes through the corresponding first mating hole 223, the corresponding second mating hole 15, and the corresponding third mating hole in sequence and mates with a nut to fix the first assembly structure 21, the bracket structure 22, and the chassis beam 10 together.

[0063] This configuration reliably connects the first assembly structure 21, the support structure 22, and the chassis beam 10, resulting in low assembly difficulty and high assembly efficiency. Furthermore, it allows the first assembly structure 21, the support structure 22, and the chassis beam 10 to be aligned along the width direction of the vehicle (i.e.,...). Figure 1 The stacking of the chassis beam 10 and the assembly frame 20 in the Y direction significantly improves the structural strength of the chassis beam 10 after they are combined.

[0064] In some embodiments of this utility model, such as Figure 1 and Figure 2As shown, the assembly frame 20 also includes: multiple connecting brackets 23, which are respectively fixed to two chassis beams 10. Each connecting bracket 23 has a first plate 231 and a second plate 232. The first plate 231 is connected to the second plate 232. The first plate 231 is fixedly connected to the corresponding chassis beam 10 and the corresponding first assembly structure 21. The second plate 232 is fixedly connected to the bracket structure 22.

[0065] As some embodiments of this application, the first plate 231 is along the height direction of the vehicle (i.e. Figure 1 The second plate 232 extends along the width direction of the vehicle (as shown in the Z direction). Figure 1 The first plate 231 is extended in the Y direction as shown, with one end of the first plate 231 near the second plate 232 connected to the other end of the second plate 232 near the first plate 231. In some embodiments of this application, the first plate 231 and the second plate 232 are welded together, or the first plate 231 and the second plate 232 are integrally formed.

[0066] Among them, multiple connecting brackets 23 are respectively fixed to two chassis beams 10. That is to say, among the multiple connecting brackets 23, some connecting brackets 23 are fixed to one chassis beam 10, and the other connecting bracket 23 is fixed to the other chassis beam 10.

[0067] The first plate 231 is fixedly connected to the corresponding chassis beam 10 and the corresponding first assembly structure 21. In some embodiments of this application, a second fastener 42 is sequentially inserted through the first plate 231, the corresponding chassis beam 10, and the corresponding first assembly structure 21, and engages with a nut to fix the first plate 231 to the corresponding chassis beam 10 and the corresponding first assembly structure 21. In some embodiments of this application, the first plate 231 can be fixedly connected to the corresponding chassis beam 10 and the corresponding first assembly structure 21 by three-point welding.

[0068] The second plate 232 is fixedly connected to the support structure 22. In some embodiments of this application, a third fastener 43 is sequentially inserted through the second plate 232 and the support structure 22 and engages with a nut to fix the second plate 232 to the support structure 22. In some embodiments of this application, the second plate 232 can also be fixedly connected to the support structure 22 by welding.

[0069] By setting multiple connecting brackets 23, the connection strength of the chassis beam 10, the first assembly structure 21, and the bracket structure 22 can be significantly enhanced, thereby significantly enhancing the structural strength of the chassis beam 10 after being combined with the assembly frame 20. This allows the chassis beam 10 and the assembly frame 20 to withstand extremely high impact forces, resulting in excellent reliability. Furthermore, it can improve the NVH (Noise, Vibration, Harshness) and durability performance of the vehicle chassis.

[0070] In some embodiments of this utility model, such as Figures 1-3 , Figures 6-8 As shown, the support structure 22 has a first weight-reducing hole 221 and / or the first assembly structure 21 has a second weight-reducing hole 211.

[0071] As some embodiments of this application, the bracket structure 22 has a first weight-reducing hole 221, as some embodiments of this application, the first assembly structure 21 has a second weight-reducing hole 211, as some embodiments of this application, the bracket structure 22 has a first weight-reducing hole 221, and the first assembly structure 21 has a second weight-reducing hole 211.

[0072] The first weight-reducing hole 221 can be constructed as a through hole or a blind hole. Similarly, the second weight-reducing hole 211 can be constructed as a through hole or a blind hole. It is understood that the first weight-reducing holes 221 are located at non-primary stress points of the support structure 22, and there can be one or more first weight-reducing holes 221. The second weight-reducing holes 211 are located at non-primary stress points of the first assembly structure 21, and there can be one or more second weight-reducing holes 211.

[0073] By having the bracket structure 22 have a first weight reduction hole 221 and / or the first assembly structure 21 have a second weight reduction hole 211, it is beneficial to reduce the weight of the assembly frame 20, which helps to achieve the lightweight design of the vehicle and improve the vehicle's driving range.

[0074] In some embodiments of this utility model, such as Figure 1 , Figure 2 , Figure 6 , Figure 7 As shown, each chassis beam 10 is fixed with multiple first assembly structures 21. The multiple first assembly structures 21 corresponding to the corresponding chassis beam 10 are arranged along the length direction of the vehicle. There are multiple support structures 22, and each of the multiple support structures 22 corresponds one-to-one with the multiple first assembly structures 21 fixed to any chassis beam 10.

[0075] In some embodiments of this application, the two chassis beams 10 are provided with the same number of first assembly structures 21, and the plurality of first assembly structures 21 provided with one chassis beam 10 corresponds one-to-one with the plurality of first assembly structures 21 provided with the other chassis beam 10. Furthermore, the number of support structures 22 is the same as and corresponds one-to-one with the number of the plurality of first assembly structures 21 provided with either chassis beam 10. That is, along the width direction of the vehicle (i.e.,...) Figure 1 (as shown in the Y direction), each support structure 22 has two first assembly structures 21 at both ends.

[0076] This configuration can significantly improve the structural strength of the chassis beam 10 and the assembly frame 20 after they are combined, so that the chassis beam 10 and the assembly frame 20 can withstand great impact forces, which is beneficial to improving the safety performance of the vehicle.

[0077] In some embodiments of the present invention, the first assembly structure 21 has an assembly for mounting the battery pack 30, which can be assembled with the assembly. For example, the battery pack 30 can be assembled with the assembly by means of bolts passing through it.

[0078] As some embodiments of this application, the assembly parts of the first assembly structure 21 can be constructed as floating nuts. Floating nuts can ensure the stability of the assembly and effectively absorb the accumulated tolerances during the assembly process, preventing problems such as loose assembly or misalignment caused by the accumulation of tolerances, and ensuring the perpendicularity requirements of each mounting point on the assembly frame 20 and the battery pack 30.

[0079] As some embodiments of this application, such as Figure 9 As shown, the floating nut 60 includes a nut box 61, two welded nuts 62, and a floating square nut 63. An adjustable space 6 is provided inside the nut box 61, and the floating square nut 63 is disposed within the adjustable space 6. This allows the floating square nut 63 to move horizontally within this adjustable space 6, and a threaded hole is formed on the floating square nut 63. Since the threaded hole is not fixed but can be finely adjusted horizontally as needed, this means that by adjusting the horizontal position of the floating square nut 63 within the adjustable space 6, the position of the threaded hole can be finely adjusted. This fine-tuning function not only ensures the stable and reliable installation of the battery pack 30 but also improves the efficiency of the connection between the battery pack 30 and the assembly frame 20.

[0080] As some embodiments of this application, there are multiple support structures 22, arranged sequentially along the length of the vehicle. As some embodiments of this application, such as... Figure 2 and Figure 8As shown, along the length of the vehicle, the bracket structures 22 at both ends have positioning parts 222. The function of the positioning parts 222 is to accurately position the battery pack 30, ensuring its accurate position during assembly. By improving assembly accuracy, it is possible to prevent the battery pack 30 from shifting or tilting during assembly, thereby ensuring the safe use of the battery pack 30.

[0081] As some embodiments of this application, the positioning part 222 includes a square positioning post with a circular positioning hole formed at the center of the square positioning post. The positioning part 222 is integrally formed on the corresponding bracket structure 22. The square positioning post makes the connection between the positioning part 222 and the bracket structure 22 more stable. The circular positioning hole can form a precise match with the corresponding part on the battery pack 30, making the positioning process faster and more accurate. Accordingly, the assembly steps are simplified, the assembly time is reduced, and the possible errors during the assembly process are reduced. By forming the positioning part 222 on the bracket structure 22, the pre-positioning accuracy of the battery pack 30 is ensured, which is beneficial for subsequent installation.

[0082] As some embodiments of this application, the assembly frame 20 further includes: a plurality of second assembly structures, which are respectively fixed to two chassis beams 10. The plurality of second assembly structures are all used to install the battery pack 30. The second assembly structures can be located on the outer or inner side of the corresponding chassis beams 10, and the second assembly structures are extended in the length direction of the vehicle.

[0083] Specifically, along the length of the vehicle, among the multiple first assembly structures 21 connected to the same chassis beam 10, a second assembly structure connected to the same chassis beam 10 is provided between every two adjacent first assembly structures 21. The second assembly structure also has an assembly for mounting the battery pack 30, which can be assembled with the assembly, for example, by bolts passing through the battery pack 30 and assembling it with the assembly.

[0084] As some embodiments of this application, the assembly parts of the second assembly structure can be constructed as floating nuts. Floating nuts can ensure the stability of the assembly and effectively absorb the accumulated tolerances during the assembly process, preventing problems such as loose assembly or misalignment caused by the accumulation of tolerances, and ensuring the perpendicularity requirements of each mounting point on the assembly frame 20 and the battery pack 30.

[0085] The multiple mounting points formed by the first assembly structure 21 and the second assembly structure can be constructed in a double "E" shape. The double "E" type mounting points can improve the mode of the battery pack 30, effectively reduce the vibration amplitude generated when the two sides of the battery pack 30 are subjected to vibration, thereby reducing the risk of electrical circuits on the battery pack 30 becoming disconnected or desoldered, and ensuring the reliability of the battery pack 30.

[0086] The vehicle according to the present invention includes the body assembly for mounting the battery pack 30 in the above embodiments. By optimizing the structural design of the chassis beam 10, the chassis beam 10 can withstand greater impact force after being combined with the mounting frame 20, resulting in better reliability and improved NVH (Noise, Vibration, Harshness) and durability of the vehicle chassis.

[0087] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0088] In the description of this utility model, "first feature" and "second feature" may include one or more of the features.

[0089] In the description of this utility model, "multiple" means two or more.

[0090] In the description of this utility model, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0091] In the description of this utility model, the terms "above", "over" and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0092] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0093] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A body assembly for assembling a battery pack, characterized by, The vehicle body assembly comprises: two chassis beams, the two chassis beams are opposite and spaced apart along a width direction of the vehicle body assembly, and the two chassis beams extend along a length direction of the vehicle body assembly; an assembly frame, the assembly frame comprises: a plurality of first assembly structures, the plurality of first assembly structures are respectively fixed to the two chassis beams, and the plurality of first assembly structures are used for mounting the battery pack; the chassis beam comprises: a mounting portion and a first extension portion, the mounting portion extends along a height direction of the vehicle body assembly, the plurality of first assembly structures are respectively fixed to the mounting portion of the two chassis beams, the first extension portion extends along a width direction of the vehicle body assembly, along the height direction of the vehicle body assembly, an upper end of the mounting portion is connected with the first extension portion, the upper end of the mounting portion is located between two ends of the first extension portion, and part of the first extension portion is located directly above the first assembly structure; or the chassis beam is configured as a rectangular beam.

2. The body assembly for assembling a battery pack according to claim 1, characterized in that, The chassis beam further comprises: a second extension portion, the second extension portion extends along the width direction of the vehicle body assembly, and along the height direction of the vehicle body assembly, a lower end of the mounting portion is connected with the second extension portion.

3. The body assembly for assembling a battery pack according to claim 2, wherein, An end of the second extension portion away from the other chassis beam is connected with the lower end of the mounting portion.

4. The body assembly for assembling a battery pack according to claim 2, wherein, The lower end of the mounting portion is located between the two ends of the second extension portion.

5. The body assembly for assembling a battery pack according to claim 4, wherein, The first extension portion comprises: two first sub-extension portions, the two first sub-extension portions are arranged in a spaced apart manner along the width direction of the vehicle body assembly, and opposite ends of the two first sub-extension portions are connected with the mounting portion. The second extension portion comprises: two second sub-extension portions, the two second sub-extension portions are arranged in a spaced apart manner along the width direction of the vehicle body assembly, and opposite ends of the two second sub-extension portions are connected with the mounting portion.

6. The body assembly for assembling a battery pack of claim 1, wherein, The chassis beam is configured as a rectangular beam, and the rectangular beam has a cavity extending along the length direction of the vehicle body assembly.

7. The body assembly for assembling a battery pack according to any one of claims 1-6, wherein, The assembly frame further comprises: a support structure, along the width direction of the vehicle body assembly, the first assembly structure is located on the outer side of the corresponding chassis beam, the support structure is connected with the two chassis beams and located between the two chassis beams, and along the width direction of the vehicle body assembly, the support structure corresponds to the first assembly structure.

8. The body assembly for assembling a battery pack according to claim 7, wherein, A first matching hole is formed at one end of the support structure close to the chassis beam, the chassis beam is formed with a second matching hole, and a third matching hole is formed at one end of the first assembly structure close to the corresponding chassis beam, a first fastener is arranged in the first matching hole, the second matching hole and the third matching hole, so that the first assembly structure, the support structure and the chassis beam are fixedly connected.

9. The body assembly for assembling a battery pack of claim 7, wherein, The assembly frame further comprises: a plurality of connecting supports, the plurality of connecting supports are respectively fixed to the two chassis beams, the connecting support has a first plate body and a second plate body, the first plate body is connected with the second plate body, the first plate body is fixedly connected with the corresponding chassis beam and the corresponding first assembly structure, and the second plate body is fixedly connected with the support structure.

10. A vehicle characterized by comprising: A vehicle body assembly for assembling a battery pack according to any one of claims 1-9. A vehicle body assembly for assembling a battery pack according to any one of claims 1-9.

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