Connecting structure of front wall lower plate and battery pack and vehicle

Abstract

The utility model provides a connecting structure of a front wall lower plate and a battery pack and a vehicle, and relates to the technical field of vehicles. The connecting structure of the front wall lower plate and the battery pack comprises a front wall lower cross beam, the front wall lower plate, the battery pack, a sealing strip and a fixing piece, the battery pack is connected to the front wall lower cross beam, the front wall lower plate is arranged on the front wall lower cross beam and extends to the position above the battery pack, the sealing strip is arranged between the front wall lower plate and the battery pack so as to seal a gap between the front wall lower plate and the battery pack, and the fixing piece is arranged on the front wall lower plate and connected with the battery pack. The fixing piece is used for fixing the front wall lower plate to the battery pack and located on the side, away from the front wall lower cross beam, of the sealing strip. According to the connecting structure, deformation of the front wall lower plate is avoided, and the sealing effect is improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a connection structure between a front lower panel and a battery pack 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 CTP (Cell to Pack) to CTB (Cell to Body). By integrating the battery pack with the vehicle body structure, CTB reduces the independent space required 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 front end of the vehicle body and the battery pack are sealed by installing a sealing strip between the lower front panel and the battery pack.

[0004] However, the lower front panel will warp up under the rebound force of the sealing strip, causing deformation of the lower front panel and weakening of the sealing effect. Utility Model Content

[0005] The present application provides a connection structure between the front lower panel and the battery pack and a vehicle, which is used to solve the problem that the front lower panel of the vehicle will warp up under the rebound force of the sealing strip, causing deformation of the front lower panel and weakening of the sealing effect.

[0006] On the one hand, the present application provides a connection structure between a front lower panel and a battery pack, comprising a front lower cross member, a front lower panel, a battery pack, a sealing strip, and a fixing member;

[0007] The battery pack is connected to the front lower cross beam, the front lower plate is arranged on the front lower cross beam and extends above the battery pack, the sealing strip is arranged between the front lower plate and the battery pack to seal the gap between the front lower plate and the battery pack, the fixing part is arranged on the front lower plate, the fixing part is connected to the battery pack to fix the front lower plate to the battery pack, and the fixing part is located on the side of the sealing strip away from the front lower cross beam.

[0008] In some embodiments, the front lower panel includes a main body portion, a sealing portion, a connecting portion and a mounting portion connected in sequence, the main body portion is arranged on the front lower cross beam, the sealing portion is located above the battery pack, the sealing strip is arranged between the sealing portion and the battery pack, and the mounting portion is located on the battery pack to be fixed to the battery pack through the fixing member.

[0009] In some embodiments, the bottom surface of the sealing portion is a first sealing surface, the bottom surface of the mounting portion is a first mounting surface, and there is a distance between the first sealing surface and the first mounting surface.

[0010] In some embodiments, the top surface of the battery pack below the sealing portion is a second sealing surface, the top surface of the battery pack below the mounting portion is a second mounting surface, and the second sealing surface and the second mounting surface are located in the same plane.

[0011] In some embodiments, the distance between the first sealing surface and the second sealing surface is equal to the distance between the first sealing surface and the first mounting surface.

[0012] In some embodiments, the side of the front lower cross beam extends to the bottom of the sealing portion and is fixedly connected to the sealing portion, and a sealant is applied between the side of the front lower cross beam and the sealing portion.

[0013] In some embodiments, the sealing strip is disposed between the side of the front lower cross member and the battery pack.

[0014] In some embodiments, the fixing members are provided in plurality, and the plurality of fixing members are evenly distributed on the front lower plate.

[0015] In some embodiments, a connecting cavity is provided on the battery pack, and the fixing member is passed through the connecting cavity and connected to the battery pack.

[0016] On the other hand, the present application provides a vehicle, including the above-mentioned connection structure between the front lower panel and the battery pack.

[0017] The present application provides a connection structure between the front panel lower plate and the battery pack and a vehicle. The connection structure between the front panel lower plate and the battery pack connects the battery pack to the front panel lower cross beam through the arrangement of the front panel lower cross beam, the front panel lower plate, the battery pack, the sealing strip and the fixing parts. The front panel lower plate is installed on the front panel lower cross beam to provide an installation and sealing position for the battery pack and the front end of the vehicle body. The front panel lower plate extends above the battery pack. The sealing strip is arranged between the battery pack and the front panel lower plate to seal the gap between the battery pack and the front panel lower plate, and the front panel lower plate is fixed to the battery pack by the fixing parts. The fixing parts are located on the side of the sealing strip away from the front panel lower cross beam, which not only realizes the connection between the battery pack and the front panel lower plate, but also realizes the fixation of the edge of the front panel lower plate, presses the sealing strip, avoids the front panel lower plate from warping due to the rebound force of the sealing strip, and improves the sealing effect of the vehicle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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.

[0019] Figure 1 A schematic diagram of the connection structure between the front lower panel and the battery pack provided in an embodiment of the present application;

[0020] Figure 2 for Figure 1 Schematic diagram of the connection structure between the middle battery pack and the lower cross member of the front wall;

[0021] Figure 3 for Figure 1 A cross-sectional view of the connection structure of the battery pack;

[0022] Figure 4 for Figure 1 Cross-sectional view of the connection structure of the center front lower panel.

[0023] Description of reference numerals:

[0024] 100, front lower cross member;

[0025] 200, front lower panel; 210, main body; 220, sealing portion; 221, first sealing surface; 230, connecting portion; 240, mounting portion; 241, first mounting surface;

[0026] 300, battery pack; 310, second sealing surface; 320, second mounting surface; 330, connecting cavity; 340, mounting ear;

[0027] 400, sealing strip;

[0028] 500. Fixing parts.

[0029] 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

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

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

[0036] CTB (Cell to Body) 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] Battery pack technology has evolved from CTP (Cell to Pack) to CTB (Cell to Body). By integrating the battery pack with the vehicle body structure, CTB reduces the independent space required 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 front end of the vehicle body and the battery pack are sealed by installing a sealing strip between the lower front panel and the battery pack.

[0038] However, the lower front panel will warp up under the rebound force of the sealing strip, causing deformation of the lower front panel and weakening of the sealing effect.

[0039] In order to solve the above problems, the present application provides a connection structure between the front panel lower plate and the battery pack and a vehicle. The connection structure between the front panel lower plate and the battery pack connects the battery pack to the front panel lower cross beam through the arrangement of the front panel lower cross beam, the front panel lower plate, the battery pack, the sealing strip and the fixing parts. The front panel lower plate is installed on the front panel lower cross beam to provide an installation and sealing position for the battery pack and the front end of the vehicle body. The front panel lower plate extends above the battery pack. The sealing strip is arranged between the battery pack and the front panel lower plate to seal the gap between the battery pack and the front panel lower plate, and the front panel lower plate is fixed to the battery pack by the fixing parts. The fixing parts are located on the side of the sealing strip away from the front panel lower cross beam, which not only realizes the connection between the battery pack and the front panel lower plate, but also realizes the fixation of the edge of the front panel lower plate, presses the sealing strip, avoids the front panel lower plate from warping up due to the rebound force of the sealing strip, and improves the sealing effect of the vehicle body.

[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 connection structure between the front lower plate and the battery pack, referring to Figures 1 to 4 The connection structure between the front lower plate and the battery pack includes a front lower cross beam 100, a front lower plate 200, a battery pack 300, a sealing strip 400 and a fixing part 500.

[0042] The battery pack 300 is connected to the front lower cross beam 100, the front lower panel 200 is arranged on the front lower cross beam 100 and extends above the battery pack 300, the sealing strip 400 is arranged between the front lower panel 200 and the battery pack 300 to seal the gap between the front lower panel 200 and the battery pack 300, the fixing part 500 is arranged on the front lower panel 200, the fixing part 500 is connected to the battery pack 300 to fix the front lower panel 200 on the battery pack 300, and the fixing part 500 is located on the side of the sealing strip 400 away from the front lower cross beam 100.

[0043] Specifically, refer to Figure 2 A plurality of lugs 340 are provided at the end of the battery pack 300, and the lugs 340 are fixedly connected to the front lower cross beam 100 by bolts. The connection between the lugs 340 on the battery pack 300 and the front lower plate 200 plays a major supporting role to support the overall weight of the battery pack 300.

[0044] The dash lower panel 200 is mounted on the upper surface of the dash lower cross member 100, providing a mounting and sealing location. The dash lower panel 200 is thinner than the dash lower cross member 100, thereby reducing overall vehicle weight and costs. The dash lower panel 200 is secured to the dash lower cross member 100 by welding, and sealant is applied between the dash lower panel 200 and the dash lower cross member 100 to achieve the desired connection and sealing. In other embodiments, the dash lower panel 200 and the dash lower cross member 100 can also be secured by bolts.

[0045] In the CTB structure, the battery pack 300 is integrated into the vehicle body structure, and the upper cover of the battery pack 300 serves as the floor of the vehicle body. Therefore, the sealing of the entire vehicle is transferred to the battery pack 300 and the vehicle body structure, that is, the front lower panel 200 must ensure both installation and sealing requirements.

[0046] By adopting the above technical solution, the battery pack 300 is installed on the front lower cross beam 100, the front lower panel 200 extends onto the battery pack 300, and the gap between the front lower panel 200 and the battery pack 300 is sealed by the sealing strip 400 to provide sealing for the entire vehicle. The fixing part 500 is arranged on the front lower panel 200 and connected to the battery pack 300, thereby pressing the sealing strip 400, improving the sealing effect while avoiding the possibility of the front lower panel 200 being tilted up under the action of the rebound force of the sealing strip 400.

[0047] In some embodiments, reference Figure 3 and Figure 4 The front lower panel 200 includes a main body portion 210, a sealing portion 220, a connecting portion 230 and an installation portion 240 connected in sequence. The main body portion 210 is arranged on the front lower cross beam 100, the sealing portion 220 is located above the battery pack 300, the sealing strip 400 is arranged between the sealing portion 220 and the battery pack 300, and the installation portion 240 is located on the battery pack 300 to be fixed to the battery pack 300 through the fixing member 500.

[0048] The main body 210, sealing portion 220, connecting portion 230 and mounting portion 240 are integrally formed, and the main body 210, sealing portion 220, connecting portion 230 and mounting portion 240 are connected in sequence. The main body 210 is fixed to the front lower cross member 100. The main body 210 and the front lower cross member 100 are fixed by welding, and sealant or structural adhesive is applied at the welding point. The sealing portion 220 extends to the battery pack 300, and the sealing strip 400 is set between the sealing portion 220 and the battery pack 300 to form a seal for the entire vehicle. The connecting portion 230 is bent downward so that the mounting portion 240 contacts the top surface of the battery pack 300, and the mounting portion 240 is fixed to the battery pack 300 by the fixing member 500.

[0049] In some embodiments, reference Figure 4 The bottom surface of the sealing portion 220 is the first sealing surface 221 , and the bottom surface of the mounting portion 240 is the first mounting surface 241 . There is a distance between the first sealing surface 221 and the first mounting surface 241 .

[0050] A distance exists between the first sealing surface 221 and the first mounting surface 241, and the first sealing surface 221 and the first mounting surface 241 are parallel to each other. This ensures that the sealing surface and the mounting surface of the dash lower panel 200 are two separate planes. By adjusting the height difference between the first sealing surface 221 and the first mounting surface 241, the requirements for different vehicle ergonomics, range, and sealing can be flexibly met.

[0051] When the distance between the first sealing surface 221 and the first mounting surface 241 increases, that is, the height of the first mounting surface 241 decreases, the passenger compartment space is increased. When the distance between the first sealing surface 221 and the first mounting surface 241 decreases, that is, the height of the first mounting surface 241 increases, the capacity of the battery pack 300 can be increased, thereby improving the vehicle's range.

[0052] Furthermore, adjusting the position of the first sealing surface 221 can change the cross-sectional height of the sealing strip 400 , thereby changing the overall sealing height of the vehicle to meet the needs of vehicles with different wading depths.

[0053] In some embodiments, the top surface of the battery pack 300 below the sealing portion 220 is the second sealing surface 310 , and the top surface of the battery pack 300 below the mounting portion 240 is the second mounting surface 320 . The second sealing surface 310 and the second mounting surface 320 are located in the same plane.

[0054] The second sealing surface 310 and the second mounting surface 320 on the battery pack 300 are both located in the same plane, which is beneficial to the manufacturing of the upper cover of the battery pack 300. At the same time, during the installation process, the positioning points are reduced, which is beneficial to the installation between the battery pack 300 and the front lower panel 200 in the CTB structure.

[0055] The distance between the first sealing surface 221 and the second sealing surface 310 is equal to the distance between the first sealing surface 221 and the first mounting surface 241 .

[0056] By varying the height of the connecting portion 230 at both ends of the cross-section, the distance between the first sealing surface 221 and the first mounting surface 241 is changed, ensuring that the first mounting surface 241 is always aligned with the mounting surface of the battery pack 300. Adjusting the height difference between the first sealing surface 221 and the first mounting surface 241 allows for flexible adaptation to meet the requirements of different vehicle ergonomics, range, and sealing requirements.

[0057] In some embodiments, the side of the front lower cross beam 100 extends to the bottom of the sealing portion 220 and is fixedly connected to the sealing portion 220 , and a sealant is applied between the side of the front lower cross beam 100 and the sealing portion 220 .

[0058] The side of the front lower cross member 100 extends to the bottom of the sealing portion 220 and is welded to the sealing portion 220, and a sealant or structural adhesive is applied at the welding and fixing location.

[0059] Furthermore, the sealing strip 400 is provided between the side of the front lower cross member 100 and the battery pack 300 .

[0060] The sealing strip 400 is located between the front lower cross member 100 and the battery pack 300, and the sealing portion 220 is connected to the side of the front lower cross member 100 to improve the strength of the sealing portion 220 and reduce the deformation of the sealing portion 220, while also providing a better sealing effect for the entire front end of the vehicle body.

[0061] In some embodiments, reference Figure 1 and Figure 4 , the fixing members 500 are provided in plurality, and the plurality of fixing members 500 are evenly distributed on the front lower plate 200 .

[0062] Exemplarily, the fixing members 500 are bolts or screws. The mounting portion 240 has multiple through-holes through which the bolts pass and are threadedly connected to the battery pack 300, thereby securing the mounting portion 240 to the upper surface of the battery pack 300. This secures the connection between the dash lower panel 200 and the battery pack 300 while also tightening the sealing strip 400. This prevents the edges of the dash lower panel 200 from partially warping due to the rebound force of the sealing strip 400, thereby improving the sealing effect.

[0063] In some embodiments, a connecting cavity 330 is provided on the battery pack 300 , and the fixing member 500 is passed through the connecting cavity 330 and connected to the battery pack 300 .

[0064] The connecting cavity 330 is located within the side wall frame structure of the battery pack 300 . The provision of the connecting cavity 330 helps prevent bolts from penetrating into the internal cells of the battery pack 300 , thereby reducing the impact on the cells.

[0065] On the other hand, the present application provides a vehicle, including the connection structure between the front lower panel 200 and the battery pack 300 described above.

[0066] Among them, the connection structure between the front lower panel 200 and the battery pack 300 in this embodiment is the same as the connection structure between the front lower panel 200 and the battery pack 300 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.

[0067] The vehicle provided in this application is characterized in that the battery pack 300 is connected to the front wall lower cross beam 100 through the arrangement of the front wall lower plate 200, the battery pack 300, the sealing strip 400 and the fixing member 500. The front wall lower plate 200 is installed on the front wall lower cross beam 100 to provide an installation and sealing position for the battery pack 300 and the front end of the vehicle body. The front wall lower plate 200 extends above the battery pack 300. The sealing strip 400 is arranged between the battery pack 300 and the front wall lower plate 200 to provide a sealing position for the battery pack 300 and the front end of the vehicle body. The gap between the battery pack 300 and the front lower panel 200 is sealed, and the front lower panel 200 is fixed to the battery pack 300 by the fixing part 500. The fixing part 500 is located on the side of the sealing strip 400 away from the front lower cross beam 100, which not only realizes the connection between the battery pack 300 and the front lower panel 200, but also realizes the fixation of the edge of the front lower panel 200, compressing the sealing strip 400, avoiding the front lower panel 200 from warping up due to the rebound force of the sealing strip 400, and improving the sealing effect of the vehicle body.

[0068] 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.

[0069] 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 connection structure between a front lower panel and a battery pack, characterized in that: It comprises a front wall lower cross beam (100), a front wall lower plate (200), a battery pack (300), a sealing strip (400) and a fixing part (500); The battery pack (300) is connected to the front lower cross beam (100), the front lower plate (200) is arranged on the front lower cross beam (100) and extends above the battery pack (300), the sealing strip (400) is arranged between the front lower plate (200) and the battery pack (300) to seal the gap between the front lower plate (200) and the battery pack (300), the fixing member (500) is arranged on the front lower plate (200), the fixing member (500) is connected to the battery pack (300) to fix the front lower plate (200) to the battery pack (300), and the fixing member (500) is located on the side of the sealing strip (400) away from the front lower cross beam (100).

2. The connection structure between the front lower panel and the battery pack according to claim 1, characterized in that: The front lower plate (200) includes a main body (210), a sealing portion (220), a connecting portion (230) and a mounting portion (240) connected in sequence, wherein the main body (210) is arranged on the front lower cross beam (100), the sealing portion (220) is located above the battery pack (300), the sealing strip (400) is arranged between the sealing portion (220) and the battery pack (300), and the mounting portion (240) is located on the battery pack (300) to be fixed to the battery pack (300) through the fixing member (500).

3. The connection structure between the front lower panel and the battery pack according to claim 2, characterized in that: The bottom surface of the sealing portion (220) is a first sealing surface (221), the bottom surface of the mounting portion (240) is a first mounting surface (241), and a distance is provided between the first sealing surface (221) and the first mounting surface (241).

4. The connection structure between the front lower panel and the battery pack according to claim 3, characterized in that: The top surface of the battery pack (300) located below the sealing portion (220) is a second sealing surface (310), and the top surface of the battery pack (300) located below the mounting portion (240) is a second mounting surface (320). The second sealing surface (310) and the second mounting surface (320) are located in the same plane.

5. The connection structure between the front lower panel and the battery pack according to claim 4, characterized in that: The distance between the first sealing surface (221) and the second sealing surface (310) is equal to the distance between the first sealing surface (221) and the first mounting surface (241).

6. The connection structure between the front lower panel and the battery pack according to claim 2, characterized in that: The side of the front lower cross beam (100) extends to the bottom of the sealing portion (220) and is fixedly connected to the sealing portion (220), and a sealant is applied between the side of the front lower cross beam (100) and the sealing portion (220).

7. The connection structure between the front lower panel and the battery pack according to claim 6, characterized in that: The sealing strip (400) is arranged between the side of the front lower cross beam (100) and the battery pack (300).

8. The connection structure between the front lower panel and the battery pack according to any one of claims 1 to 7, characterized in that: The fixing members (500) are provided in plurality, and the plurality of fixing members (500) are evenly distributed on the front lower plate (200).

9. The connection structure between the front lower panel and the battery pack according to any one of claims 1 to 7, characterized in that: The battery pack (300) is provided with a connection cavity (330), and the fixing member (500) is inserted into the connection cavity (330) and connected to the battery pack (300).

10. A vehicle, characterized in that: The invention comprises the connection structure between the front lower panel and the battery pack according to any one of claims 1 to 9.

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