Vehicle body rear end structure and vehicle

Abstract

The utility model provides a vehicle body rear end structure and a vehicle, and relates to the technical field of vehicles. The vehicle body rear end structure comprises a vehicle body rear end structure main body, and a mounting boss is arranged on the vehicle body rear end structure main body; the first sealing rib is located below the mounting boss, the first sealing rib comprises a connecting part and a sealing part connected with the connecting part, the thickness of the bottom face of the sealing part is larger than that of the connecting part, the connecting part is arranged on the vehicle body rear end structure body, and the sealing part is used for abutting against a sealing strip of the vehicle; the second sealing rib is arranged on the vehicle body rear end structure main body and connected with the vehicle body rear end structure main body, the second sealing rib is located on the outer side of the mounting boss, and a flanging part is arranged on the second sealing rib and used for abutting against the sealing strip. According to the vehicle body rear end structure, the demolding requirement is met, and meanwhile the light weight effect is achieved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a vehicle body rear end structure and a vehicle. Background Art

[0002] With the development of new energy vehicles, significant progress has been made in technology development and market penetration in recent years. Battery technology, as the core part of electric vehicles, is also constantly innovating and optimizing.

[0003] Battery pack technology has evolved from cell-to-pack (CTP) to cell-to-body (CTB). By integrating the battery pack with the vehicle body, CTB technology reduces the required independent space for the battery pack, allowing it to fit more closely within the vehicle body, thereby reducing the vehicle's overall size. In existing technology, the rear floor of the vehicle body is a die-cast part, and a sealing strip is required between the rear floor and the battery pack to meet the sealing requirements of the entire vehicle.

[0004] However, only the shorter lower area of ​​the rear floor of the vehicle body cooperates with the sealing strip, and the sealing part of the rear floor of the vehicle body requires sufficient thickness to ensure the sealing function, resulting in increased weight and increased costs. Utility Model Content

[0005] The present application provides a vehicle body rear end structure and a vehicle, which are used to solve the problem that the sealing part of the rear floor of the vehicle body is heavy and the cost increases after the sealing thickness is met.

[0006] In one aspect, the present application provides a vehicle body rear end structure, comprising a vehicle body rear end structure main body, wherein the vehicle body rear end structure main body has a mounting boss;

[0007] a first sealing rib, the first sealing rib being located below the mounting boss, the first sealing rib comprising a connecting portion and a sealing portion connected to the connecting portion, the connecting portion being provided on the vehicle body rear end structural body, the bottom surface thickness of the sealing portion being greater than the thickness of the connecting portion, and the sealing portion being configured to abut against a sealing strip;

[0008] The second sealing rib is arranged on the rear end structural body of the vehicle body and connected to the rear end structural body of the vehicle body. The second sealing rib is located on the outside of the mounting boss. The second sealing rib is provided with a flange portion, and the flange portion is used to abut against the sealing strip.

[0009] In some embodiments, a surface of the sealing portion facing the sealing strip and a surface of the flange portion facing the sealing strip are located in the same plane.

[0010] In some embodiments, the connecting portion includes an inclined section and an arcuate section, the arcuate section is arranged on the vehicle body rear end structural body, the inclined section is arranged on the arcuate section, the sealing portion is arranged on the inclined section, and the inclined section is inclined toward the direction away from the vehicle body rear end structural body.

[0011] In some embodiments, the inclined section and the side of the sealing portion away from the vehicle body rear end structural body are located in the same plane, and the inclination angle of the side of the inclined section close to the vehicle body rear end structural body is greater than the inclination angle of the side of the sealing portion close to the vehicle body rear end structural body.

[0012] In some embodiments, the inclination angle of the inclined section close to the side surface of the vehicle body rear end structural body is a, 5°≤a≤15°.

[0013] In some embodiments, the sealing portion has an inclination angle b at a side surface close to the vehicle body rear end structural body, and 1.5°≤a≤5°.

[0014] In some embodiments, the thickness of the connecting portion is 5 mm, and the bottom thickness of the sealing portion is 6 mm.

[0015] In some embodiments, the vehicle body rear end structural body, the first sealing rib and the second sealing rib are integrally die-cast.

[0016] In some embodiments, two second sealing ribs are provided, and the two second sealing ribs are provided on both sides of the mounting boss, and the two second sealing ribs are connected to the first sealing rib.

[0017] On the other hand, the present application provides a vehicle comprising the above-mentioned vehicle body rear end structure.

[0018] The present application provides a rear end structure of a vehicle body and a vehicle. The rear end structure of the vehicle body arranges a first sealing rib and a second sealing rib, and the first sealing rib is arranged below the mounting boss. The first sealing rib is divided into a connecting portion and a sealing portion. The bottom surface thickness of the sealing portion is greater than the thickness of the connecting portion. By increasing the thickness of the bottom of the sealing portion to increase the contact area with the sealing strip, the required sealing effect is achieved, the thickness of the connecting portion is reduced, the weight of the vehicle body is reduced, and the cost is reduced; the second sealing rib increases the contact area with the sealing strip by the arrangement of the flange portion, thereby reducing the thickness of the second sealing rib, reducing the weight of the vehicle body, and reducing the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0020] Figure 1A schematic diagram of the connection structure of the rear end structure of the vehicle body provided in an embodiment of the present application;

[0021] Figure 2 for Figure 1 Schematic diagram of the structure of the second sealing strip;

[0022] Figure 3 for Figure 1 A schematic structural diagram of the first sealing strip;

[0023] Figure 4 for Figure 3 Schematic diagram of the partial enlarged structure of the first sealing strip.

[0024] Description of reference numerals:

[0025] 100. The rear end structural body of the vehicle body; 110. The mounting boss;

[0026] 200, first sealing rib; 210, connecting portion; 211, arc segment; 212, inclined segment; 220, sealing portion;

[0027] 300, second sealing rib; 310, flange portion;

[0028] 400, battery pack;

[0029] 500. Sealing strip.

[0030] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0031] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0032] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0033] In this application, unless otherwise specified or limited, the terms "installed," "connected," "fixed," and the like should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections, electrical connections, or communication between them; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0034] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0035] Cell to Pack (CTP) technology is a battery pack integration technology that directly integrates cells into the battery pack, skipping the traditional module link, thereby improving space utilization and energy density.

[0036] Cell to Body (CTB) technology is a technology that directly integrates the battery pack into the vehicle body structure, using the upper cover of the battery pack as the body floor.

[0037] With the development of new energy vehicles, significant progress has been made in technological development and market penetration in recent years. Battery technology, as the core part of electric vehicles, is also constantly innovating and optimizing. Battery pack technology has evolved from cell-to-pack (CTP) to body-integrated battery pack (CTB). CTB technology reduces the independent space requirement for the battery pack by integrating the battery pack with the body structure, allowing the battery pack to fit more closely to the body, thereby reducing the overall size of the vehicle. In the existing technology, the rear floor of the vehicle body is a die-cast part, and a sealing strip needs to be set between the rear floor of the vehicle body and the battery pack for sealing to meet the sealing requirements of the entire vehicle.

[0038] However, only the shorter lower area of ​​the rear floor of the vehicle body cooperates with the sealing strip, and the sealing part of the rear floor of the vehicle body requires sufficient thickness to ensure the sealing function, resulting in increased weight and increased costs.

[0039] In order to solve the above problems, the present application provides a rear end structure of the vehicle body and a vehicle. The rear end structure of the vehicle body arranges the first sealing rib and the second sealing rib, and the first sealing rib is arranged below the mounting boss. The first sealing rib is divided into a connecting part and a sealing part. The bottom surface thickness of the sealing part is greater than the thickness of the connecting part. By increasing the thickness of the bottom of the sealing part to increase the contact area with the sealing strip, the required sealing effect is achieved, the thickness of the connecting part is reduced, the weight of the vehicle body is reduced, and the cost is reduced; the second sealing rib increases the contact area with the sealing strip by the arrangement of the flange part, thereby reducing the thickness of the second sealing rib, reducing the weight of the vehicle body, and reducing the cost.

[0040] The following specific embodiments describe in detail the technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0041] On the one hand, the present application provides a vehicle body rear end structure, referring to Figures 1 to 4 The rear end structure of the vehicle body includes: a rear end structure body 100, and a mounting boss 110 is provided on the rear end structure body 100;

[0042] A first sealing rib 200 is located below the mounting boss 110 and includes a connecting portion 210 and a sealing portion 220 connected to the connecting portion 210. The connecting portion 210 is disposed on the vehicle body rear end structural body 100. The bottom surface thickness of the sealing portion 220 is greater than that of the connecting portion 210. The sealing portion 220 is used to abut against the vehicle's sealing strip 500.

[0043] The second sealing rib 300 is provided on the rear end structural body 100 of the vehicle body and is connected to the rear end structural body 100 of the vehicle body. The second sealing rib 300 is located on the outside of the mounting boss 110. The second sealing rib 300 is provided with a flange portion 310, which is used to abut against the sealing strip 500.

[0044] Specifically, the mounting boss 110 is located in the center of the rear-end structural body 100. It protrudes beyond the edge of the body's rear-end structural body 100 and the first sealing rib 200. Mounting boss 110 is used to mount the upper structure of the body's rear-end structural body 100. The connecting portion 210 and the sealing portion 220 are smoothly connected along the height of the cross section. The rear-end structural body 100 is used to mount rear-end structures such as rear seats and seatbelts, and is equivalent to the rear floor structure of other vehicles.

[0045] In CTB technology, the battery pack 400 is integrated with the vehicle body structure, with the upper housing of the battery pack 400 serving as the vehicle floor. The vehicle seal is located between the upper housing of the battery pack 400 and the vehicle body structure. In this embodiment, the seal between the rear end structure and the vehicle body is located on the battery pack 400, that is, between the rear end structure main body 100 and the battery panels. This seal is achieved through a sealing strip 500.

[0046] The first sealing rib 200 is arranged below the mounting boss 110. The first sealing rib 200 is divided into a connecting portion 210 and a sealing portion 220 along the height direction of the cross section. The bottom surface thickness of the sealing portion 220 is greater than the thickness of the connecting portion 210. By increasing the thickness of the bottom of the sealing portion 220 to increase the contact area with the sealing strip 500, the required sealing effect is achieved. The thickness of the connecting portion 210 is reduced, which reduces the weight of the vehicle body and reduces the cost. The second sealing rib 300 increases the contact area with the sealing strip 500 through the setting of the flange portion 310, thereby reducing the thickness of the second sealing rib 300, reducing the weight of the vehicle body and reducing the cost.

[0047] In the embodiment of the present application, the vehicle body rear end structural body 100, the first sealing rib 200 and the second sealing rib 300 are integrally die-cast.

[0048] Reference Figure 2 The second sealing rib 300 and the flange portion 310 are also integrally formed, and the flange portion 310 is located at the bottom of the second sealing rib, so that the bottom surface of the flange portion 310 serves as a sealing surface with the battery pack 400.

[0049] The rear end structure of the vehicle body is a die-cast part. To facilitate smooth demolding of the rear end structure, the connection between the connecting portion 210 and the sealing portion 220 of the first sealing rib 200 is smoothly transitioned. The thickness of the end of the sealing portion 220 where it connects to the connecting portion 210 is equal to the thickness of the connecting portion 210, and the thickness of the sealing portion 220 away from the connecting portion 210 is greater than the thickness of the connecting portion 210. The sidewalls of the sealing portion 220 are inclined to smoothly increase the thickness of the bottom surface of the sealing portion 220. The cross-section of the sealing portion 220 is trapezoidal in height.

[0050] In the rear-end structure of the vehicle body, the mounting boss 110 protrudes beyond the edge of the rear floor panel, so the first sealing rib 200 at the bottom of the mounting boss 110 can only be demolded in one direction, downward. By adopting the above technical solution, the thickness of the connecting portion 210 in the first sealing rib 200 is reduced, and the impact of one-way demolding is reduced. Only the mold on both sides of the first sealing rib 200 needs to be split into two parts, and the first sealing rib 200 can be smoothly demolded from the bottom by utilizing the slight elasticity of the first sealing rib 200. This meets the sealing requirements while achieving a lightweight effect.

[0051] In the rear-end structure, the second sealing rib 300 is located on the side of the mounting boss 110, ensuring that there are no obstacles to demolding on either side. The flange 310 on the second sealing rib 300 is released from the upper and lower molds, respectively, to achieve demolding of the second sealing rib 300. This reduces the thickness of the second sealing rib 300 while meeting sealing requirements, without hindering demolding and achieving a lightweight effect.

[0052] In some embodiments, the surface of the sealing portion 220 facing the sealing strip and the surface of the flange portion 310 facing the sealing strip are located in the same plane.

[0053] The bottom surface of the sealing portion 220 and the bottom surface of the flange portion 310 are located in the same plane, so that the sealing strip 500 is installed in the same plane. While facilitating installation, it reduces the span of the sealing strip 500 between different planes, which is beneficial to reducing damage to the sealing strip 500 and improving the sealing effect.

[0054] In some embodiments, the connecting portion 210 includes an inclined section 211 and an arcuate section 212. The arcuate section 211 is provided on the vehicle body rear end structural main body 100, and the inclined section 212 is provided on the arcuate section 211. The sealing portion 220 is provided on the inclined section 212, and the inclined section 212 is provided in an inclined direction away from the vehicle body rear end structural main body 100.

[0055] Compared with the vertical setting, the inclined setting of the first sealing rib 200 allows the first sealing rib 200 to be able to spring outward away from the rear end structural body 100 of the vehicle body, so as to facilitate the one-way release of the mold at the first sealing rib 200 during the demolding process.

[0056] In some embodiments, reference Figure 3 and Figure 4 The inclined section 212 and the side of the sealing portion 220 away from the vehicle body rear end structural main body 100 are located in the same plane, and the inclination angle of the side of the inclined section 212 close to the vehicle body rear end structural main body 100 is greater than the inclination angle of the side of the sealing portion 220 close to the vehicle body rear end structural main body 100.

[0057] Specifically, the inclined section 212 and the sealing portion 220 have the same inclination angle on the side facing away from the rear end structural body 100. The inclination angle on the side of the sealing portion 220 closer to the rear floor is reduced, resulting in a trapezoidal cross-section of the sealing portion 220. The bottom thickness of the sealing portion 220 is greater than that of the connecting portion 210. Furthermore, the transition between the sealing portion 220 and the inclined section 212 is smooth, with no sharp corners that may occur during demolding. This reduces the thickness of the connecting portion 210 while maintaining the required strength, achieving a lightweight effect.

[0058] In some embodiments, reference Figure 3 and Figure 4 The inclination angle of the inclined section 212 close to the side surface of the vehicle body rear end structural main body 100 is a, 5°≤a≤15°.

[0059] The inclination angle a of the side of the inclined section 212 close to the vehicle body rear end structural main body 100 is the angle between the side of the inclined section 212 close to the vehicle body rear end structural main body 100 and the vertical direction, that is, the demolding angle.

[0060] Preferably, the inclination angle a of the inclined section 212 close to the vehicle body rear end structural main body 100 is 10°.

[0061] In some embodiments, reference Figure 3 and Figure 4 The inclination angle of the sealing portion 220 close to the side surface of the vehicle body rear end structural body 100 is b, 1.5°≤a≤5°.

[0062] The inclination angle of the sealing portion 220 close to the vehicle body rear end structural main body 100 is b, which is the angle between the sealing portion 220 close to the vehicle body rear end structural main body 100 and the vertical direction, that is, the demoulding angle.

[0063] Preferably, the inclination angle b of the sealing portion 220 on the side close to the vehicle body rear end structural main body 100 is 2°.

[0064] In some embodiments, the thickness of the connecting portion 210 is 5 mm, and the bottom thickness of the sealing portion 220 is 6 mm.

[0065] In one embodiment, referring to Figure 3 and Figure 4 The draft angle a of the inclined section 212 is 10°, the draft angle b of the sealing portion 220 is 2°, the thickness c of the connecting portion 210 is 5 mm, the bottom thickness d of the sealing portion 220 is 6 mm, and the height h of the sealing portion 220 is 8 mm. This ensures that the strength requirements of the first sealing rib 200 are met while reducing the weight of the first sealing rib 200, thereby achieving a lightweight effect.

[0066] In other embodiments, the angle difference and the height h of the sealing portion 220 can be flexibly adjusted to achieve a specific wall thickness combination based on the required wall thickness difference between the connecting portion 210 and the sealing portion 220. The draft angle a is defined based on the depth of the rib. When the depth of the first sealing rib 200 (i.e., the height of the first sealing rib 200) is greater than 80 mm, the draft angle a of the inclined section 212 is ≥5°; the draft angle b of the sealing portion 220 is ≥1.5°. On this basis, the height h of the sealing portion 220 is increased, and the wall thickness is thickened. The thickness of the bottom surface of the sealing portion 220 can thus be adjusted as required.

[0067] In some embodiments, two second sealing ribs 300 are provided. The two second sealing ribs 300 are provided on both sides of the mounting boss 110 and are connected to the first sealing rib 200 .

[0068] Specifically, the mounting boss 110 is located in the middle of the vehicle body rear end structural body 100, so that the first sealing rib 200 is set in the middle of the vehicle body rear end structural body 100. Therefore, the areas on both sides of the mounting boss 110 are set as the second sealing rib 300. Figure 1 The dotted-line boxes on both sides are the areas where the second sealing rib 300 is set, and the area between the two dotted-line boxes is the area where the first sealing rib 200 is set.

[0069] On the other hand, the present application provides a vehicle including the aforementioned rear-end structure. The rear-end structure is mounted on the vehicle and a sealing strip 500 is provided between the rear-end structure and the upper housing of the battery pack 400 to form a seal for the entire vehicle.

[0070] Among them, the rear end structure of the vehicle body in this embodiment is the same as the structure of the rear end structure of the vehicle body provided in any of the above embodiments, and can bring the same or similar technical effects. They will not be described one by one here, and please refer to the description of the above embodiments for details.

[0071] The present application provides a vehicle in which a first sealing rib 200 is arranged below the mounting boss 110 in the rear end structure of the vehicle body. The first sealing rib 200 is divided into a connecting portion 210 and a sealing portion 220. The bottom surface thickness of the sealing portion 220 is greater than the thickness of the connecting portion 210. By increasing the thickness of the bottom of the sealing portion 220 to increase the contact area with the sealing strip 500, the desired sealing effect is achieved, and the thickness of the connecting portion 210 is reduced; the second sealing rib 300 increases the contact area with the sealing strip 500 by the setting of the flange portion 310, thereby reducing the thickness of the second sealing rib 300, reducing the weight of the vehicle body, and reducing costs.

[0072] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the present invention. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered merely as exemplary, and the true scope and spirit of the present invention are indicated by the following claims.

[0073] It should be understood that the present application is not limited to the exact structure described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A rear end structure of a vehicle body, characterized in that: include: A vehicle body rear end structural body (100), wherein the vehicle body rear end structural body (100) has a mounting boss (110); a first sealing rib (200), the first sealing rib (200) being located below the mounting boss (110), the first sealing rib (200) comprising a connecting portion (210) and a sealing portion (220) connected to the connecting portion (210), the connecting portion (210) being provided on the vehicle body rear end structural body (100), the bottom surface thickness of the sealing portion (220) being greater than the thickness of the connecting portion (210), and the sealing portion (220) being used to abut against a sealing strip (500) of the vehicle; A second sealing rib (300) is provided on the vehicle body rear end structural body (100) and connected to the vehicle body rear end structural body (100). The second sealing rib (300) is located outside the mounting boss (110). A flange portion (310) is provided on the second sealing rib (300). The flange portion (310) is used to abut against the sealing strip (500).

2. The vehicle body rear end structure according to claim 1, characterized in that: The surface of the sealing portion (220) facing the sealing strip (500) and the surface of the flange portion (310) facing the sealing strip (500) are located in the same plane.

3. The vehicle body rear end structure according to claim 1, characterized in that: The connecting portion (210) comprises an inclined section (212) and an arc section (211); the arc section (211) is arranged on the vehicle body rear end structural main body (100); the inclined section (212) is arranged on the arc section (211); the sealing portion (220) is arranged on the inclined section (212); and the inclined section (212) is arranged inclined in a direction away from the vehicle body rear end structural main body (100).

4. The vehicle body rear end structure according to claim 3, characterized in that: The inclined section (212) and the side of the sealing portion (220) away from the vehicle body rear end structural main body (100) are located in the same plane, and the inclined angle of the side of the inclined section (212) close to the vehicle body rear end structural main body (100) is greater than the inclined angle of the side of the sealing portion (220) close to the vehicle body rear end structural main body (100).

5. The vehicle body rear end structure according to claim 4, characterized in that: The inclined angle of the inclined section (212) close to the side surface of the vehicle body rear end structural main body (100) is a, 5°≤a≤15°.

6. The vehicle body rear end structure according to claim 4, characterized in that: The sealing portion (220) has an inclination angle b at a side surface close to the vehicle body rear end structural main body (100), and the angle is 1.5°≤a≤5°.

7. The vehicle body rear end structure according to claim 4, characterized in that: The thickness of the connecting portion (210) is 5 mm, and the bottom surface thickness of the sealing portion (220) is 6 mm.

8. The vehicle body rear end structure according to any one of claims 1 to 7, characterized in that: The vehicle body rear end structural body (100), the first sealing rib (200) and the second sealing rib (300) are integrally die-cast.

9. The vehicle body rear end structure according to any one of claims 1 to 7, characterized in that: The second sealing ribs (300) are provided in two numbers, the two second sealing ribs (300) are provided on both sides of the mounting boss (110), and the two second sealing ribs (300) are connected to the first sealing rib (200).

10. A vehicle, characterized in that: The vehicle body rear end structure comprises the vehicle body rear end structure as described in any one of claims 1 to 9.

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