Lower vehicle body assembly and carrier

Abstract

The utility model relates to the technical field of carriers, and particularly provides a lower vehicle body assembly and a carrier. The lower vehicle body assembly comprises a doorsill beam, a battery assembly, an exhaust pipe and a boundary beam structure. The battery assembly comprises a battery frame, and the battery frame and the threshold beam are arranged at intervals; the exhaust pipe is arranged between the threshold beam and the battery frame; one end of the boundary beam structure is connected with the battery frame, and the other end crosses the exhaust pipe and is connected with the threshold beam. According to the invention, the mounting structure space occupied by the longitudinal beam of the vehicle body is cancelled, so that the in-pack space of the power battery can be increased, and the endurance of the vehicle is improved; meanwhile, the battery frame is directly connected to the doorsill beam through the boundary beam structure, so that the battery assembly is stably connected, and the torsional rigidity of the whole vehicle can be improved through the rigidity of the battery assembly; in addition, a safety gap is reserved around the exhaust pipe, so that the heat dissipation condition of the exhaust pipe is considered, and the influence of the exhaust pipe on other components such as the battery assembly is reduced.

Description

Technical Field

[0001] This application relates to the technical field of vehicles, and specifically proposes an underbody assembly and a vehicle. Background Technology

[0002] Hybrid electric vehicles (HEVs) are cars that use both an internal combustion engine and an electric motor as power sources, and are also equipped with a battery and an exhaust pipe. Currently, to improve the driving range of hybrid vehicles, it is necessary to increase the capacity of the battery pack, which in turn requires increasing the internal space of the battery pack.

[0003] However, during the operation of a hybrid vehicle, the exhaust pipe temperature is relatively high, and sufficient safety clearance needs to be reserved around the exhaust pipe. Since the power battery and the exhaust pipe are generally arranged side by side, when the space occupied by the power battery is increased, it will encroach on the safety clearance reserved around the exhaust pipe, thus causing the contradiction of "space overlap". Utility Model Content

[0004] The purpose of this application is to solve at least some of the technical problems mentioned above, and this purpose is achieved through the following technical solutions:

[0005] In a first aspect, this application proposes a lower body assembly, which includes a sill beam, a battery assembly, an exhaust pipe, and a side beam structure. The battery assembly includes a battery frame, which is spaced apart from the sill beam; the exhaust pipe is located between the sill beam and the battery frame; one end of the side beam structure is connected to the battery frame, and the other end crosses the exhaust pipe and is connected to the sill beam.

[0006] In some embodiments, the side beam structure includes a first part, a second part, and a third part connected in sequence. The first part extends along the width direction of the vehicle body, the second part extends along the height direction of the vehicle body, and the third part extends along the width direction of the vehicle body. The first part is connected to the battery frame, and the third part is connected to the sill beam. The battery frame, the first part, and the second part form an enclosure structure with an opening facing downwards. The exhaust pipe is located within the enclosure structure.

[0007] In some embodiments, the second part has a first gap d1 with respect to the sill beam, and satisfies 3mm≤d1≤15mm. And / or, the distance between the exhaust pipe and the battery frame is a1, the distance between the exhaust pipe and the first part is b1, and the distance between the exhaust pipe and the second part is c1, and satisfies 15mm≤a1≤50mm, and / or 15mm≤b1≤50mm, and / or 15mm≤c1≤50mm.

[0008] In some embodiments, the lower edge of the sill beam is provided with a clearance groove, and at least part of the third part of the structure is located within the clearance groove.

[0009] In some embodiments, the sill beam has a protrusion toward the battery frame, the side beam structure is located above the exhaust pipe, and one end of the side beam is connected to the battery frame and the other end is connected to the protrusion.

[0010] In some embodiments, the protrusion dimension of the protrusion toward the battery frame is d2, and satisfies 30mm≤d2≤90mm. And / or, the distance between the exhaust pipe and the battery frame is a2, the distance between the exhaust pipe and the side beam structure is b2, and the distance between the exhaust pipe and the sill beam is c2, and satisfies 15mm≤a2≤50mm, and / or 15mm≤b2≤50mm, and / or 15mm≤c2≤50mm.

[0011] In some embodiments, the lower edge of the sill beam is provided with a clearance groove, the side beam structure is located below the exhaust pipe, and one end of it is connected to the battery frame, while the other end is located in the clearance groove and connected to the sill beam.

[0012] In some embodiments, the portion of the side beam structure corresponding to the exhaust pipe is provided with a heat dissipation vent. And / or, the distance between the exhaust pipe and the battery frame is a3, the distance between the exhaust pipe and the side beam structure is b3, and the distance between the exhaust pipe and the sill beam is c3, and satisfying 15mm≤a3≤50mm, and / or 15mm≤b3≤50mm, and / or 15mm≤c3≤50mm.

[0013] In some embodiments, a reinforcing rib is provided between the side beam structure and the battery frame.

[0014] Secondly, this application proposes a vehicle that includes the lower body assembly of the first aspect.

[0015] The technical solution proposed in this application has at least the following technical effects:

[0016] In this application, the space occupied by the vehicle body longitudinal beams for mounting structures is eliminated, thereby increasing the internal space of the power battery pack and improving the vehicle's range. At the same time, the side beam structure allows the battery frame to be directly connected to the sill beam, making the battery assembly connection stable. Moreover, the rigidity of the battery assembly can improve the torsional rigidity of the entire vehicle. In addition, this application also reserves a safety gap around the exhaust pipe to take into account the heat dissipation of the exhaust pipe and reduce the impact of the exhaust pipe on the battery assembly and other components. Attached Figure Description

[0017] To better integrate the content illustrated in the accompanying drawings with the description of the specific embodiments, a brief introduction to the drawings is provided below. It is understood that the accompanying drawings mentioned below are merely schematic illustrations of some embodiments of the relevant technical solutions and the technical solutions of this application. Without creative effort, those skilled in the art can create drawings illustrating other embodiments.

[0018] Specifically, the annotations for the accompanying drawings are as follows:

[0019] Figure 1 This is a structural diagram of the lower body assembly before the improvement.

[0020] Figure 2 This is a schematic diagram of the structure of the first type of undercarriage assembly described in some embodiments of this application;

[0021] Figure 3 This is a structural schematic diagram of the second type of undercarriage assembly described in some embodiments of this application;

[0022] Figure 4 This is a structural schematic diagram of the third type of undercarriage assembly described in some embodiments of this application;

[0023] Figure 5 This is an isometric schematic diagram of the third type of undercarriage assembly described in some embodiments of this application.

[0024] Specifically, the annotations for the figure marks in the instruction manual are as follows:

[0025] Before improvement: 10', door sill beam; 20', battery frame; 30', exhaust pipe; 70', vehicle floor; 80', fasteners; 90', vehicle longitudinal beams;

[0026] Improved components: 10. Sill beam; 101. Clearance groove; 102. Protrusion; 20. Battery frame; 30. Exhaust pipe; 301. Heat shield; 40. Side beam structure; 401. First part; 402. Second part; 403. Third part; 404. Opening; 405. Heat dissipation vent; 50. Reinforcing rib; 60. Battery top cover; 70. Vehicle floor; 80. Fastener; X: Length direction; Y: Width direction; Z: Height direction. Detailed Implementation

[0027] To make the embodiments of this application clearer, they will be described below in conjunction with the accompanying drawings. It should be understood that the content mentioned below represents only some embodiments of this application, and not all embodiments are listed exhaustively. Therefore, other embodiments that can be obtained based on the following embodiments without any inventive effort fall within the protection scope of this application.

[0028] It should be understood that the terminology used herein is for the purpose of describing specific embodiments only and is not intended to impose strict limitations on the technical solutions unless the context clearly indicates otherwise. For example, the use of "a," "an," and "the" to modify a feature does not preclude the possibility that the feature may be plural in other embodiments.

[0029] It should be understood that the terms "comprising," "including," and "having" are open-ended, indicating the presence of the stated features but not excluding the possibility of other features in the embodiment. Similarly, the use of terms such as "first," "second," etc., to describe multiple features only indicates the distinction between one feature and another, and such terms do not imply order or sequence unless explicitly stated in the context.

[0030] It should be understood that, unless the context clearly indicates otherwise, the terms "setup," "connection," and "installation" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integrated connection; they can refer to a direct connection or an indirect connection via a medium. Those skilled in the art will understand the specific meaning of these terms in this document based on the specific circumstances.

[0031] In addition, for ease of description, the text will use terms of spatial relative relationship to describe the position of one feature relative to another feature, such as "inner", "outer", "end", "side", "upper", "middle", "lower", "high", "low", "axial", "circumferential", "radial", "horizontal", "vertical", "first direction", "second direction", etc. It can be understood that the spatial relative relationship between two features should include other specific situations besides those shown in the accompanying drawings of the specification.

[0032] The background technology of this application is further explained below with reference to the accompanying drawings.

[0033] in, Figure 1 This diagram representatively illustrates the arrangement of the power battery and exhaust pipe 30' in a traditional hybrid vehicle. Specifically, the power battery includes a battery frame 20', and the vehicle body longitudinal beam 90 is connected to the vehicle body floor 70' to form a mounting structure. The battery frame 20' is mounted on the vehicle body longitudinal beam 90 using fasteners 80'. Further, along the vehicle width direction Y, the external space W of the power battery refers to the distance between the battery frame 20' and the door sill beam 10', specifically composed of the safety clearance S, the diameter D of the exhaust pipe 30', and the mounting structure space G.

[0034] Analysis shows that to increase the internal space of the power battery pack, the external space W must be reduced. However, the diameter D of the exhaust pipe 30' and the safety clearance S cannot be compressed. Therefore, to increase the internal space of the power battery pack, the space of the mounting structure G can be reduced.

[0035] The embodiments of this application are described below with reference to the accompanying drawings. It can be understood that the technical features involved in the different embodiments described below can be combined with each other as long as they do not conflict with each other.

[0036] Reference Figures 2 to 4This application provides an embodiment of a vehicle body assembly, which includes a sill beam 10, a battery assembly, an exhaust pipe 30, and a side beam structure 40. The battery assembly includes a battery frame 20, which is spaced apart from the sill beam 10. The exhaust pipe 30 is located between the sill beam 10 and the battery frame 20. One end of the side beam structure 40 is connected to the battery frame 20, and the other end crosses the exhaust pipe 30 and is connected to the sill beam 10.

[0037] In this embodiment, the mounting structure space occupied by the vehicle body longitudinal beam is eliminated, thereby increasing the internal space of the power battery pack and improving the vehicle's range. At the same time, the side beam structure 40 allows the battery frame 20 to be directly connected to the sill beam 10, making the battery assembly connection stable. Moreover, the rigidity of the battery assembly can improve the torsional rigidity of the entire vehicle. In addition, this application also reserves a safety gap around the exhaust pipe 30 to take into account the heat dissipation of the exhaust pipe 30 and reduce the impact of the exhaust pipe 30 on the battery assembly and other components.

[0038] Understandably, referring to Figures 2 to 4 The battery assembly also includes other components, such as the battery cover 60. It should be noted that, along the length X of the vehicle body, a portion of the exhaust pipe 30 may extend between the sill beam 10 and the battery frame 20.

[0039] In addition, in some embodiments not shown in the figures, the vehicle longitudinal beams may be retained, but the dimensions of the vehicle longitudinal beams along the Z direction of vehicle height need to be reduced to ensure that the vehicle longitudinal beams do not interfere with the side beam structure 40, battery components, etc. That is, in this embodiment, the vehicle longitudinal beams are not used as mounting points for the battery frame 20, but exist to increase the strength of the vehicle floor 70.

[0040] In some embodiments, refer to Figure 2 The side beam structure 40 includes a first part 401, a second part 402, and a third part 403 connected in sequence. The first part 401 extends along the width direction Y of the vehicle body, the second part 402 extends along the height direction Z of the vehicle body, and the third part 403 extends along the width direction Y of the vehicle body. The first part 401 is connected to the battery frame 20, and the third part 403 is connected to the sill beam 10. The battery frame 20, the first part 401, and the second part 402 form an enclosure structure with an opening 404, and the opening 404 faces downward. The exhaust pipe 30 is located inside the enclosure structure.

[0041] This embodiment relates to a specific implementation of the first type of lower body assembly, wherein the extension direction of the first part 401 is parallel to or slightly inclined relative to the vehicle width direction Y; similarly, the extension direction of the second part 402 is parallel to or slightly inclined relative to the vehicle height direction Z, and the extension direction of the second part 402 is parallel to or slightly inclined relative to the vehicle width direction Y.

[0042] In addition, the battery frame 20, the first part 401 and the second part 402 form a surrounding structure with the opening 404 facing downwards, which not only provides installation space for the exhaust pipe 30, but also protects the exhaust pipe 30. The exhaust pipe 30 can also dissipate heat to the lower part of the vehicle body through the opening 404, reducing the impact on the passenger compartment above the vehicle floor 70.

[0043] In some embodiments, refer to Figure 2 The second part 402 has a first gap d1 with the sill beam 10, and satisfies 3mm≤d1≤15mm. And / or, the distance between the exhaust pipe 30 and the battery frame 20 is a1, the distance between the exhaust pipe 30 and the first part 401 is b1, and the distance between the exhaust pipe 30 and the second part 402 is c1, and satisfies 15mm≤a1≤50mm, and / or 15mm≤b1≤50mm, and / or 15mm≤c1≤50mm.

[0044] In the first specific embodiment of the lower body assembly, if d1 is too small, the second part 402 and the sill beam 10 are prone to frictional noise; if d1 is too large, it will occupy the safety clearance around the exhaust pipe 30. Therefore, d1 should be moderate. For example, d1 can be any one of 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, and 15mm, or within any two of these values. Furthermore, in this embodiment, a suitable distance is provided between the exhaust pipe 30 and the battery frame 20, the first part 401, and the second part 402, thereby ensuring the heat dissipation effect of the exhaust pipe 30 without occupying excessive space.

[0045] In some embodiments, refer to Figure 2 The lower edge of the threshold beam 10 is provided with a relief groove 101, and at least part of the structure of the third part 403 is located in the relief groove 101.

[0046] In a specific embodiment of the first type of lower body assembly, the third part 403 cooperates with the clearance groove 101 of the sill beam 10, increasing space utilization and improving structural integration. Specifically, refer to... Figure 2 The third part 403 and the threshold beam 10 can be fixed from bottom to top by fasteners 80, which are securely assembled and easy to operate.

[0047] In some embodiments, refer to Figure 3 The sill beam 10 has a protrusion 102 facing the battery frame 20. The side beam structure 40 is located above the exhaust pipe 30, and one end of it is connected to the battery frame 20, while the other end is connected to the protrusion 102.

[0048] This embodiment relates to a specific implementation of the second type of lower body assembly. In this embodiment, the exhaust pipe 30 can also dissipate heat downwards, thereby reducing the impact on the passenger compartment above the vehicle floor 70. Specifically, refer to... Figure 3 One end of the side beam structure 40 and the protrusion 102 can be fixed from bottom to top by fasteners 80, ensuring a secure assembly and convenient operation. Furthermore, in this embodiment, the end face of the side beam structure 40 and the side wall of the sill beam 10 are spaced apart to form an assembly gap, which also prevents frictional noise between them.

[0049] In some embodiments, refer to Figure 3 The protrusion dimension of the protrusion 102 toward the battery frame 20 is d2, and satisfies 30mm≤d2≤90mm. And / or, the distance between the exhaust pipe 30 and the battery frame 20 is a2, the distance between the exhaust pipe 30 and the side beam structure 40 is b2, and the distance between the exhaust pipe 30 and the sill beam 10 is c2, and satisfies 15mm≤a2≤50mm, and / or 15mm≤b2≤50mm, and / or 15mm≤c2≤50mm.

[0050] In the second specific embodiment of the lower body assembly, if d2 is too large, the protrusion 102 may easily interfere with other components connected to the lower surface of the vehicle floor 70; if d2 is too small, the protrusion 102 may be difficult to assemble with the side beam structure 40. Therefore, d2 should be moderate. For example, d2 can be any one of 30mm, 35mm, 40mm, 45mm, 50mm, 55mm, 60mm, 65mm, 70mm, 75mm, 80mm, 85mm, and 90mm, or fall within the range of any two of these values. Furthermore, in this embodiment, the exhaust pipe 30 is provided with appropriate spacing between itself and the battery frame 20, the side beam structure 40, and the sill beam 10, thereby ensuring the heat dissipation effect of the exhaust pipe 30 without occupying excessive space.

[0051] In some embodiments, refer to Figure 4 The lower edge of the sill beam 10 is provided with a relief groove 101. The side beam structure 40 is located below the exhaust pipe 30, and one end of it is connected to the battery frame 20, while the other end is located in the relief groove 101 and connected to the sill beam 10.

[0052] This embodiment relates to a specific implementation of the third type of lower body assembly. In this embodiment, one end of the side beam structure 40 cooperates with the clearance groove 101 of the sill beam 10, increasing space utilization and improving structural integration. Specifically, refer to... Figure 4 The side beam structure 40 and the threshold beam 10 can be fixed from bottom to top by fasteners 80, which are firmly assembled and easy to operate.

[0053] In some embodiments, refer to Figure 5The portion of the side beam structure 40 corresponding to the exhaust pipe 30 is provided with a heat dissipation vent 405. And / or, refer to... Figure 4 The distance between the exhaust pipe 30 and the battery frame 20 is a3, the distance between the exhaust pipe 30 and the side beam structure 40 is b3, and the distance between the exhaust pipe 30 and the sill beam 10 is c3, and these conditions are met: 15mm≤a3≤50mm, and / or 15mm≤b3≤50mm, and / or 15mm≤c3≤50mm.

[0054] In a specific embodiment of the third lower body assembly, the heat dissipation vent 405 facilitates downward heat dissipation from the exhaust pipe 30. Specifically, refer to... Figure 5 Along the length X of the vehicle body, the side beam structure 40 and the portion corresponding to the exhaust pipe 30 are provided with multiple heat dissipation vents 405 at intervals. In addition, in this embodiment, the exhaust pipe 30 is provided with appropriate intervals between itself and the battery frame 20, the side beam structure 40, and the sill beam 10, thereby ensuring the heat dissipation effect of the exhaust pipe 30 without occupying too much space.

[0055] In some embodiments, refer to Figures 2 to 4 A reinforcing rib 50 is provided between the side beam structure 40 and the battery frame 20.

[0056] In this embodiment, the reinforcing rib 50 can enhance the strength of the side beam structure 40, provide a certain supporting force for the side beam structure 40, and prevent it from breaking due to its own weight or impact.

[0057] In addition, refer to Figures 2 to 4 In some embodiments, the exhaust pipe 30 is provided with a heat insulation cover 301. The heat insulation cover 301 can cover the entire circumferential direction of the exhaust pipe 30, or a gap can be reserved below it to facilitate the exhaust pipe 30 to dissipate heat downward.

[0058] Secondly, embodiments of this application propose a vehicle that includes the lower body assembly of the first aspect. Therefore, the vehicle of the second aspect possesses all the technical effects of the lower body assembly of the first aspect, the specific technical effects of which will not be elaborated here. It should be understood that the vehicle includes other components besides the lower body assembly, such as a power system and a vehicle body, which will not be described in detail here.

[0059] Optionally, the vehicle may include hybrid vehicles, range-extended vehicles, flying cars, etc.

[0060] In particular, the term "and / or" in this application should be understood as follows:

[0061] In the first case, the term “and / or” between the first subject and the second subject includes any of the following meanings: (1) only the first subject; (2) only the second subject; and (3) both the first subject and the second subject.

[0062] In the second case, the term "and / or" between the last two of three or more subjects means including at least any one of the subjects. For example, "first subject, second subject and / or third subject" has the same meaning as "first subject and / or second subject and / or third subject", specifically including the following combinations: (1) only the first subject; (2) only the second subject; (3) only the third subject; (4) first subject and second subject and no third subject; (5) first subject and third subject and no second subject; (6) second subject and third subject and no first subject; and (7) first subject, second subject and third subject;

[0063] Furthermore, the character " / " in this application indicates that the objects before and after it are in an "or" relationship.

[0064] Finally, although the embodiments of this application have been described above in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the concept of this application, and such modifications and variations all fall within the scope of protection of this application.

Claims

1. A lower car body assembly, characterized by, include: Threshold beam (10); The battery assembly includes a battery frame (20) spaced apart from the sill beam (10); An exhaust pipe (30) is provided between the sill beam (10) and the battery frame (20); The side beam structure (40) is connected at one end to the battery frame (20) and at the other end across the exhaust pipe (30) to the sill beam (10).

2. The lower car body assembly of claim 1, wherein, The side beam structure (40) includes a first part (401), a second part (402) and a third part (403) connected in sequence. The first part (401) extends along the width direction (Y) of the vehicle body, the second part (402) extends along the height direction (Z) of the vehicle body, and the third part (403) extends along the width direction (Y) of the vehicle body. The first part (401) is connected to the battery frame (20), and the third part (403) is connected to the sill beam (10); The battery frame (20), the first portion (401) and the second portion (402) form an enclosure structure with an opening (404) facing downwards, and the exhaust pipe (30) is located within the enclosure structure.

3. The lower car body assembly of claim 2, wherein, The second part (402) has a first gap d1 with the threshold beam (10), and satisfies 3mm≤d1≤15mm; And / or, the distance between the exhaust pipe (30) and the battery frame (20) is a1, the distance between the exhaust pipe (30) and the first part (401) is b1, and the distance between the exhaust pipe (30) and the second part (402) is c1, and satisfy 15mm≤a1≤50mm, and / or 15mm≤b1≤50mm, and / or 15mm≤c1≤50mm.

4. The lower car body assembly of claim 2, wherein, The lower edge of the threshold beam (10) is provided with a relief groove (101), and at least part of the third part (403) is located in the relief groove (101).

5. The lower car body assembly of claim 1, wherein, The threshold beam (10) has a protrusion (102) facing the battery frame (20). The side beam structure (40) is located above the exhaust pipe (30), with one end connected to the battery frame (20) and the other end connected to the protrusion (102).

6. The lower car body assembly of claim 5, wherein, The protrusion dimension of the protrusion (102) toward the battery frame (20) is d2, and satisfies 30mm≤d2≤90mm; And / or, the distance between the exhaust pipe (30) and the battery frame (20) is a2, the distance between the exhaust pipe (30) and the side beam structure (40) is b2, and the distance between the exhaust pipe (30) and the threshold beam (10) is c2, and satisfy 15mm≤a2≤50mm, and / or 15mm≤b2≤50mm, and / or 15mm≤c2≤50mm.

7. The undercarriage assembly according to claim 1, characterized in that, The lower edge of the threshold beam (10) is provided with a relief groove (101). The side beam structure (40) is located below the exhaust pipe (30), and one end of it is connected to the battery frame (20), while the other end is located in the relief groove (101) and connected to the threshold beam (10).

8. The lower car body assembly of claim 1, wherein, The portion of the side beam structure (40) corresponding to the exhaust pipe (30) is provided with a heat dissipation port (405); And / or, the distance between the exhaust pipe (30) and the battery frame (20) is a3, the distance between the exhaust pipe (30) and the side beam structure (40) is b3, and the distance between the exhaust pipe (30) and the threshold beam (10) is c3, and satisfying 15mm≤a3≤50mm, and / or 15mm≤b3≤50mm, and / or 15mm≤c3≤50mm.

9. The lower car body assembly according to any one of claims 1 to 8, characterized in that A reinforcing rib (50) is provided between the side beam structure (40) and the battery frame (20).

10. A carrier, characterized by Includes the undercarriage assembly as described in any one of claims 1 to 9.

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