A landslide type vehicle body chassis structure suitable for new energy vehicle models

Abstract

The application relates to a landslide type vehicle body chassis structure suitable for a new energy vehicle type and belongs to the field of new energy vehicles. The landslide type vehicle body chassis structure comprises a vehicle body frame and a battery pack mounting mechanism, the battery pack mounting mechanism is fixedly installed on the vehicle body frame, and a battery pack is slidably installed in the battery pack mounting mechanism. The application reduces the dismounting time of the battery pack, shortens the production line beat time, avoids the tightening torque attenuation problem caused by repeated assembly and disassembly of bolts and nuts, guarantees the mounting strength of the battery pack, and reduces the safety hidden danger in the later use process.

Description

Technical Field

[0001] This invention relates to the field of new energy vehicles, and in particular to a ramp-type chassis structure adapted to new energy vehicle models. Background Technology

[0002] In the automobile manufacturing process, the continuous pursuit of innovative and optimized structural design plays a crucial role in improving vehicle production efficiency, reducing production costs, and enhancing overall vehicle comfort. Nowadays, with the increasing popularity of new energy vehicles, the design requirements for battery pack installation structures are also becoming increasingly stringent.

[0003] In battery pack installation structures, most adopt a structure in which the battery pack is tightened to the vehicle chassis with bolts. The battery pack installation point is usually designed to be tightened to the vehicle chassis with 16-24 fastening bolts. Some battery packs are usually designed with a pre-installation line, which connects the battery pack with a transition bracket and then fixes it to the vehicle chassis. This process often takes more than 10 minutes.

[0004] In addition, when the vehicle is repaired or the battery pack and other related parts are replaced, the fastening bolts need to be removed one by one. The nuts welded to the vehicle body are prone to stripping during repeated disassembly and reassembly, which affects the tightening torque of the battery pack.

[0005] Therefore, the aforementioned battery pack installation structure and method are particularly cumbersome in both production line assembly and subsequent maintenance processes, which seriously affects the current high-speed production capacity requirements. At the same time, the excessive reliance on manual labor during assembly makes it difficult to control installation consistency, which seriously affects the reliability of battery pack installation. During repeated assembly and disassembly, bolts and nuts are prone to a decrease in tightening torque, which affects the installation strength of the battery pack and poses serious safety hazards in the later stages. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a slope-type chassis structure adapted to new energy vehicle models, so as to solve the above-mentioned problem.

[0007] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a slope-type vehicle chassis structure adapted to new energy vehicle models, comprising: a vehicle frame and a battery pack mounting mechanism, wherein the battery pack mounting mechanism is fixedly mounted on the vehicle frame, and the battery pack is slidably mounted in the battery pack mounting mechanism.

[0008] The beneficial effects of this invention are: the battery pack can be slidably installed in the battery pack mounting mechanism, which facilitates the sliding of the battery pack into or out of the battery pack mounting mechanism, reduces the battery pack assembly and disassembly time, shortens the production line cycle time, and avoids the problem of torque attenuation caused by repeated assembly and disassembly of bolts and nuts, ensuring the installation strength of the battery pack and reducing safety hazards during later use.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Furthermore, the battery pack mounting mechanism includes battery pack support plates, two of which are spaced apart and fixedly installed at both ends of the vehicle frame in the Y direction, forming a space between the two battery pack support plates for slidably installing and removing the battery pack.

[0011] The beneficial effects of adopting the above-mentioned further solution are: the two battery pack support plates are arranged opposite each other, which helps to provide space for the disassembly and assembly of the battery pack, and at the same time, the battery pack support plates help to provide support for the assembly of the battery pack.

[0012] Furthermore, the battery pack support plate is an L-shaped plate, with its long side fixedly installed on the vehicle frame, and an installation guide limiting block for limiting the battery pack in the Y direction is fixedly provided on its short side, so as to form an installation guide groove for the battery pack to slide on its short side. The installation guide groove is located between the long side of the battery pack support plate and the installation guide limiting block.

[0013] The beneficial effects of adopting the above-mentioned further solution are: installing guide limit blocks is beneficial for limiting the Y-axis of the battery pack after the battery pack is assembled, thereby making the battery pack stably installed between the two battery pack support plates; installing guide grooves in conjunction with the sliders on the battery pack is beneficial for enabling the battery pack to be slidably installed in the battery pack mounting mechanism.

[0014] Furthermore, the mounting guide groove is inclined downward along the length direction of the battery pack support plate.

[0015] The beneficial effects of adopting the above-mentioned further solution are: it facilitates the free sliding of the battery pack between the two battery pack support plates by utilizing its own weight, thereby reducing the battery pack installation time and shortening the production line cycle time.

[0016] Furthermore, both ends of the battery pack support plate are equipped with sealing plates for X-axis positioning of the battery pack.

[0017] The beneficial effect of adopting the above-mentioned further solution is that the sealing plate helps to limit the two ends of the installed battery pack in the X direction, thereby improving the stability of the battery pack in the battery pack installation mechanism.

[0018] Furthermore, guide markers are fixedly installed on the long sides of the two battery pack support plates that are arranged opposite each other.

[0019] The beneficial effect of adopting the above-mentioned further solutions is that the directional signs help provide directional guidance for workers when sliding the battery pack for installation.

[0020] Furthermore, the battery pack mounting mechanism also includes: a vehicle body floor, support beams, and floor crossbeams. The vehicle body floor is adapted to and fixedly installed inside the vehicle body frame. The two support beams are respectively fixedly installed at both ends of the vehicle body floor. Both ends of the support beams are fixedly connected to the inner wall of the vehicle body frame. The two battery pack support plates are respectively fixedly installed on both sides of the vehicle body floor. The two floor crossbeams are spaced apart and fixedly installed on the bottom surface of the vehicle body floor.

[0021] The beneficial effects of adopting the above-mentioned further solutions are that the vehicle floor, support beams, and floor crossbeams help to improve the strength of the two battery pack support plates on the vehicle frame, thereby ensuring the reliability of the battery pack installation between the two battery pack support plates.

[0022] Furthermore, the vehicle body floor is provided with a plurality of adjustment holes spaced apart. The adjustment holes are strip-shaped through holes and are located above the floor crossbeam.

[0023] The beneficial effect of adopting the above-mentioned further solution is that the adjustment hole, in conjunction with the external fastener, facilitates the adjustment during the Z-axis locking and fixing process of the battery pack.

[0024] Furthermore, the battery pack is located below the floor beam, and fasteners pass through the vehicle floor and the floor beam in sequence and are fixedly connected to the battery pack for Z-axis limiting of the battery pack.

[0025] The beneficial effects of adopting the above-mentioned further solution are: it facilitates Z-axis limiting of the battery pack and improves the stability of the battery pack after installation.

[0026] Furthermore, the vehicle body frame is a one-piece die-cast ring structure, with reinforcing beams fixedly installed at both ends.

[0027] The beneficial effects of adopting the above-mentioned further solutions are: strengthening the beams helps to improve the strength of the vehicle body and frame, and provides connection positions for the installation and mating of the vehicle body and frame with other automotive components. Attached Figure Description

[0028] Figure 1 A schematic diagram of the overall structure provided for an embodiment of the present invention. Figure 1 ; Figure 2 A schematic diagram of the overall structure provided for an embodiment of the present invention. Figure 2 ; Figure 3 This is a schematic diagram showing the connection between the vehicle floor, battery pack support plate, and floor beam provided in an embodiment of the present invention.

[0029] in, Figure 3 The arrows in the diagram indicate the installation orientation of each component.

[0030] The attached diagram lists the components represented by each number as follows: 1. Vehicle body frame; 2. Battery pack mounting mechanism; 11. Reinforcing beam; 21. Vehicle body floor; 22. Support beam; 23. Battery pack support plate; 24. Floor crossbeam; 211. Adjustment hole; 231. Guide marker; 232. Installation guide limit block; 233. Installation guide groove; 234. Sealing plate. Detailed Implementation

[0031] The principles and features of the present invention are described below. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0032] like Figures 1 to 3 As shown, this embodiment provides a ramp-type chassis structure adapted to new energy vehicle models, including: a vehicle frame 1 and a battery pack mounting mechanism 2. The battery pack mounting mechanism 2 is fixedly mounted on the vehicle frame 1, and the battery pack is slidably mounted in the battery pack mounting mechanism 2.

[0033] The beneficial effects of this embodiment are: the battery pack can be slidably installed in the battery pack mounting mechanism, which facilitates the sliding of the battery pack into or out of the battery pack mounting mechanism, reduces the battery pack assembly and disassembly time, shortens the production line cycle time, and avoids the problem of torque attenuation caused by repeated assembly and disassembly of bolts and nuts, ensuring the installation strength of the battery pack and reducing safety hazards during later use.

[0034] Preferred, such as Figures 1 to 3 As shown, the battery pack mounting mechanism 2 includes a battery pack support plate 23. Two battery pack support plates 23 are spaced apart from each other and fixedly installed at both ends of the vehicle frame 1 in the Y direction. A space is formed between the two battery pack support plates 23 for slidably installing and removing the battery pack.

[0035] The advantages of adopting the above preferred solution are: the two battery pack support plates are arranged opposite each other, which helps to provide space for the disassembly and assembly of the battery pack, and at the same time, the battery pack support plates help to provide support for the assembly of the battery pack.

[0036] Preferred, such as Figures 1 to 3 As shown, the battery pack support plate 23 is an L-shaped plate with its long side fixedly installed on the vehicle frame 1. An installation guide limiting block 232 for limiting the battery pack in the Y direction is fixedly provided on its short side, so that an installation guide groove 233 for the battery pack to slide is formed on its short side. The installation guide groove 233 is located between the long side of the battery pack support plate 23 and the installation guide limiting block 232.

[0037] It should be noted that in this embodiment, the installation guide limiting block 232 and the battery pack support plate 23 are an integrated structure. The Y direction refers to the direction of the line connecting the two battery pack support plates 23; The Y-axis width of the mounting guide groove 233 is adapted to the Y-axis width of the slider on the battery pack that is used for sliding connection with the mounting guide groove 233.

[0038] The advantages of adopting the above preferred solution are: installing guide limit blocks is beneficial for limiting the Y-axis of the battery pack after the battery pack is assembled, thereby making the battery pack stably installed between the two battery pack support plates; installing guide grooves in conjunction with the sliders on the battery pack is beneficial for enabling the battery pack to be slidably installed in the battery pack mounting mechanism.

[0039] Preferred, such as Figures 1 to 3 As shown, the mounting guide groove 233 is inclined downward along the length direction of the battery pack support plate 23.

[0040] It should be noted that in this embodiment, the installation guide groove 233 is inclined downward at an angle of 0.5 degrees along the length direction of the battery pack support plate 23. This ensures that the battery pack can slide freely between the two battery pack support plates 23 under its own weight, thereby reducing the battery pack installation time and shortening the production line cycle time. It also prevents the sealing plate 234 or the battery pack itself from being damaged when it slides freely between the two battery pack support plates 23 due to excessive weight. The mounting guide groove 233 is coated with lubricating oil to further facilitate the sliding of the battery pack within the mounting guide groove 233.

[0041] The advantages of adopting the above-mentioned preferred solution are: it allows the battery pack to slide freely between the two battery pack support plates using its own weight, thereby reducing the battery pack installation time and shortening the production line cycle time.

[0042] Preferred, such as Figures 1 to 3 As shown, both ends of the battery pack support plate 23 are equipped with sealing plates 234 for X-direction limiting of the battery pack.

[0043] It should be noted that in this embodiment, the X direction refers to the length direction of the battery pack support plate 23; Both sealing plates 234 can be detachably connected to both ends of the battery pack support plate 23 in the X direction by bolts; alternatively, one sealing plate 234 can be detachably connected to one end of the battery pack support plate 23 in the X direction by bolts, and the other sealing plate 234 can be welded to the other end of the battery pack support plate 23 in the X direction. However, the sealing plate 234 detachably connected to one end of the battery pack support plate 23 in the X direction by bolts must be located at the end above the inclined direction of the mounting guide groove 233. This allows the sealing plate 234 to be removed from one end of the battery pack support plate 23 in the X direction before assembling the battery pack, facilitating the insertion of the battery pack slider from one end of the battery pack support plate 23 in the X direction into the mounting guide groove 233 during subsequent sliding assembly of the battery pack, and allowing the battery pack to slide freely within the mounting guide groove 233 using its own weight. After the battery pack is installed, the sealing plate 234 is locked and fixed from one end of the battery pack support plate 23 in the X direction by bolts, thereby limiting the two ends of the installed battery pack in the X direction.

[0044] The advantages of adopting the above preferred solution are: the sealing plate helps to limit the two ends of the installed battery pack in the X direction, thereby improving the stability of the battery pack in the battery pack installation mechanism.

[0045] Preferred, such as Figures 1 to 3 As shown, guide signs 231 are fixedly installed on the long sides of the two battery pack support plates 23 that are arranged opposite each other.

[0046] It should be noted that in this embodiment, the guide mark 231 is located at one end above the inclined direction of the mounting guide groove 233.

[0047] The advantage of adopting the above preferred solution is that the directional signs help provide directional guidance for workers when sliding the battery pack for installation.

[0048] Preferred, such as Figures 1 to 3 As shown, the battery pack mounting mechanism 2 further includes: a vehicle body floor 21, support beams 22, and floor crossbeams 24. The vehicle body floor 21 is adapted to and fixedly installed inside the vehicle body frame 1. The two support beams 22 are respectively fixedly installed at both ends of the vehicle body floor 21. Both ends of the support beams 22 are fixedly connected to the inner wall of the vehicle body frame 1. The two battery pack support plates 23 are respectively fixedly installed on both sides of the vehicle body floor 21. The two floor crossbeams 24 are spaced apart and fixedly installed on the bottom surface of the vehicle body floor 21.

[0049] It should be noted that in this embodiment, the vehicle floor 21 is a quadrilateral plate, the two ends of the vehicle floor 21 refer to the two ends in the X direction, and the two sides of the vehicle floor 21 refer to the two sides in the Y direction. In this embodiment, the vehicle frame 1, the vehicle floor 21, and the support beam 22 can be integrally die-cast, thereby reducing splicing welds, reducing errors and defects in the manufacturing process, and improving the overall integrity and reliability of the structure. The top ends of the long sides of the two battery pack supports 23 are respectively fixedly connected to the two sides of the vehicle floor 21; The battery pack support 23 and the floor beam 24 are reinforced with carbon fiber composite material in addition to high-strength aluminum alloy. The battery pack support 23 and the floor beam 24 can be connected as follows: Figure 3 The connection can be fixed as shown, or it can be left unfixed. like Figure 3 As shown in this embodiment, both ends of the vehicle floor 21 in the Y direction are fixedly provided with bent edges. The long side of the battery pack support 23 and the end of the floor beam 24 are respectively fixedly connected to the bent edges, thereby realizing the fixed connection between the battery pack support 23 and the floor beam 24. The connection between the battery pack support 23, the floor beam 24 and the bent edges is circumferentially sprayed with sealant to prevent oxidation and corrosion at the connection between metal parts.

[0050] The advantages of adopting the above-mentioned preferred solution are: the vehicle floor, support beam and floor crossbeam help to improve the strength of the two battery pack support plates on the vehicle frame, thereby ensuring the reliability of the battery pack installation between the two battery pack support plates.

[0051] Preferred, such as Figures 1 to 3 As shown, the vehicle floor 21 is provided with a plurality of adjustment holes 211 spaced apart. The adjustment holes 211 are strip-shaped through holes and are located above the floor beam 24.

[0052] The advantages of adopting the above preferred solution are: the adjustment hole, in conjunction with the external fastener, facilitates adjustment during the Z-axis locking and fixing process of the battery pack.

[0053] Preferred, such as Figures 1 to 3 As shown, the battery pack is located below the floor beam 24. Fasteners pass through the vehicle floor 21 and the floor beam 24 in sequence and are fixedly connected to the battery pack to limit the battery pack in the Z direction.

[0054] It should be noted that in this embodiment, the fastener is a bolt. After passing through the adjustment hole 211 on the vehicle floor 21 and the through hole on the floor beam 24 for the fastener to pass through, the fastener is threadedly connected and fixed to the battery pack.

[0055] The advantages of adopting the above preferred scheme are: it helps to limit the battery pack in the Z direction and improves the stability of the battery pack after installation.

[0056] Preferred, such as Figures 1 to 3 As shown, the vehicle frame 1 is an integral die-cast ring structure, with reinforcing beams 11 fixedly installed at both ends.

[0057] It should be noted that, in this embodiment, the fixed installation is at both ends of the vehicle frame 1 in the X direction; The main body of the chassis assembly 1 is made of high-strength aluminum alloy, which can provide sufficient structural strength support and reduce the lightweight coefficient of the body-in-white.

[0058] The advantages of adopting the above preferred solution are: the strengthening beam helps to improve the strength of the vehicle body frame and provides connection positions for the installation and mating of the vehicle body frame and other automotive parts.

[0059] The working process of this embodiment is described below: like Figures 1 to 3 As shown, when it is necessary to remove the battery pack, first remove the sealing plate 234 at the end above the inclined direction of the mounting guide groove 233 from the battery pack support plate 23, then loosen the fasteners to remove the Z-direction limit on the battery pack, and then pull the battery pack to slide it out from the mounting guide groove 233 of the two battery pack support plates 23.

[0060] When assembling the battery pack, first insert the two sliders of the battery pack into the two mounting guide grooves 233 from the end of the mounting guide groove 233 that is above the inclined direction. Under the weight of the battery pack, the battery pack slides downward in the mounting guide groove 233 until it abuts against the sealing plate 234 at the end of the mounting guide groove 233 that is below the inclined direction. Then, the sealing plate 234 at the end of the mounting guide groove 233 that is above the inclined direction is installed on the battery pack support plate 23, thereby limiting the X-direction of the battery pack. As for limiting the Y-direction of the battery pack, it can be achieved by matching the Y-direction width of the two sliders of the battery pack with the Y-direction width of the mounting guide groove 233. Next, the fasteners are threaded through the adjustment hole 211 and the floor beam 24 and then threaded into the corresponding holes on the battery pack, thereby limiting the Z-direction of the battery pack. Afterwards, the battery pack and the chassis are combined into a large assembly and connected to the vehicle body, which significantly improves the torsional rigidity of the vehicle body.

[0061] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0062] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0063] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0064] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0065] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0066] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A ramp-type chassis structure adapted for new energy vehicle models, characterized in that, include: The vehicle body frame (1) and the battery pack mounting mechanism (2) are fixedly mounted on the vehicle body frame (1) and the battery pack is slidably mounted in the battery pack mounting mechanism (2).

2. The slope-type chassis structure adapted for new energy vehicle models according to claim 1, characterized in that, The battery pack mounting mechanism (2) includes a battery pack support plate (23). The two battery pack support plates (23) are spaced apart from each other and fixedly installed at both ends of the vehicle frame (1) in the Y direction. A space is formed between the two battery pack support plates (23) for slidably installing and removing the battery pack.

3. The slope-type chassis structure adapted for new energy vehicle models according to claim 2, characterized in that, The battery pack support plate (23) is an L-shaped plate with its long side fixedly installed on the vehicle frame (1). A mounting guide limiting block (232) for limiting the battery pack in the Y direction is fixedly provided on its short side, which forms a mounting guide groove (233) for the battery pack to slide on its short side. The mounting guide groove (233) is located between the long side of the battery pack support plate (23) and the mounting guide limiting block (232).

4. The slope-type chassis structure adapted for new energy vehicle models according to claim 3, characterized in that, The mounting guide groove (233) is inclined downward along the length direction of the battery pack support plate (23).

5. The slope-type chassis structure adapted for new energy vehicle models according to claim 3, characterized in that, Both ends of the battery pack support plate (23) are equipped with sealing plates (234) for X-direction limiting of the battery pack.

6. The slope-type chassis structure adapted for new energy vehicle models according to claim 2, characterized in that, Guide markers (231) are fixedly installed on the long sides of the two battery pack support plates (23) that are arranged opposite each other.

7. The slope-type chassis structure adapted for new energy vehicle models according to claim 2, characterized in that, The battery pack mounting mechanism (2) further includes: a vehicle floor (21), support beams (22) and floor crossbeams (24). The vehicle floor (21) is adapted to and fixedly installed inside the vehicle frame (1). The two support beams (22) are respectively fixedly installed at both ends of the vehicle floor (21). Both ends of the support beams (22) are fixedly connected to the inner wall of the vehicle frame (1). The two battery pack support plates (23) are respectively fixedly installed on both sides of the vehicle floor (21). The two floor crossbeams (24) are spaced apart and fixedly installed on the bottom surface of the vehicle floor (21).

8. The slope-type chassis structure adapted for new energy vehicle models according to claim 7, characterized in that, The vehicle floor (21) is provided with a plurality of adjustment holes (211) spaced apart. The adjustment holes (211) are strip-shaped through holes and are located above the floor beam (24).

9. The slope-type chassis structure adapted for new energy vehicle models according to claim 7, characterized in that, The battery pack is located below the floor beam (24), and fasteners pass through the vehicle floor (21) and the floor beam (24) in sequence and are fixedly connected to the battery pack for Z-direction limiting of the battery pack.

10. The slope-type chassis structure adapted for new energy vehicle models according to claim 1, characterized in that, The vehicle frame (1) is an integral die-cast ring structure, with reinforcing beams (11) fixedly installed at both ends.

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