Bottom guard plate structure and vehicle

Abstract

The invention relates to a bottom guard plate structure and a vehicle. The bottom protection plate structure comprises a first bottom protection plate which is fixedly arranged at the rear end of a battery pack of the vehicle, and the height of the lowest point of the first bottom protection plate is larger than that of the lowest point of the battery pack. The scheme can prevent the bottom guard plate from shoveling water and snow as much as possible.

Description

Technical Field

[0001] The present application relates to the technical field of underbody guard plates of vehicles, and in particular to an underbody guard plate structure and a vehicle. Background Art

[0002] An underbody guard is a protective structure installed on the bottom of a car. It protects important components on the vehicle's underside from intrusion or damage from external objects such as road debris, sand, and puddles. Furthermore, because it covers the components located on the underside of the vehicle, the underbody guard also serves to enhance its appearance.

[0003] However, when the vehicle is traveling on a road with accumulated water or snow, the bottom guard plate is prone to shoveling water and snow, and is prone to breaking or a large amount of snow entering. Summary of the Invention

[0004] The present application provides a bottom guard plate structure and a vehicle, which can avoid the bottom guard plate from shoveling water and snow as much as possible.

[0005] In a first aspect, the present application provides a bottom guard plate structure, comprising: a first bottom guard plate fixedly arranged at the rear end of a battery pack of a vehicle, wherein the height of the lowest point of the first bottom guard plate is higher than the height of the lowest point of the battery pack.

[0006] Optionally, the bottom guard plate structure further includes a second bottom guard plate fixedly mounted on the first rear sub-frame, and the height of the lowest point of the second bottom guard plate is higher than the height of the lowest point of the battery pack.

[0007] Optionally, a second water retaining portion is provided at one end of the second bottom guard plate close to the first bottom guard plate, and the second water retaining portion extends upward.

[0008] Optionally, a first water retaining portion is provided at one end of the first bottom guard plate close to the second bottom guard plate, and the first water retaining portion cover is provided on the second water retaining portion.

[0009] Optionally, the first water retaining portion includes a first part and a second part that are connected, the first part is covered above the second water retaining portion, and the second part is covered at the front side of the second water retaining portion.

[0010] Optionally, the first water retaining portion and the second water retaining portion are provided with an avoidance gap, and the second bottom guard plate has an upper limit position and a lower limit position. When the second bottom guard plate moves between the upper limit position and the lower limit position, the second water retaining portion and the first water retaining portion are always separated by the avoidance gap.

[0011] Optionally, the bottom guard plate structure further includes a third bottom guard plate fixedly installed on the second rear subframe. The third bottom guard plate is located behind the second bottom guard plate, and the height of the lowest point of the third bottom guard plate is higher than the height of the lowest point of the battery pack.

[0012] Optionally, one end of the third bottom guard plate close to the second bottom guard plate is bent upward to form a third water blocking portion, and one end of the second bottom guard plate close to the third bottom guard plate is provided with a fourth water blocking portion, and the fourth water blocking portion covers the third water blocking portion.

[0013] In a second aspect, the present application provides a vehicle, including: the bottom guard plate structure according to any one of the above; a battery pack, and the first bottom guard plate is fixedly arranged at the rear end of the battery pack.

[0014] Optionally, the vehicle further includes a first rear subframe and a reinforcing bracket. The bottom guard plate structure further includes a second bottom guard plate fixedly installed on the first rear subframe. The height of the lowest point of the second bottom guard plate is higher than the height of the lowest point of the battery pack; wherein, the reinforcing bracket connects the first rear subframe and the battery pack.

[0015] The technical solution provided by the present application at least includes the following beneficial effects:

[0016] Since the lowest point of the first bottom guard plate is higher than the lowest point of the battery pack, the first bottom guard plate can scoop as little water and snow as possible under the shielding of the battery pack, preventing a large amount of rain and snow from entering the first bottom guard plate. At the same time, during the driving of the vehicle, the battery pack can also block the wind for the first bottom guard plate, which is beneficial to reducing the wind resistance during the driving of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram showing the mating manner of the first bottom guard plate and the battery pack shown in an embodiment of the present application;

[0018] Figure 2 is a top view schematic diagram of the bottom guard plate structure shown in an embodiment;

[0019] Figure 3 is a schematic diagram showing the mating manner of the first bottom guard plate and the second bottom guard plate shown in an embodiment;

[0020] Figure 4 is a top view schematic diagram of the bottom guard plate structure shown in another embodiment;

[0021] Figure 5 is a schematic diagram showing the mating manner of the second bottom guard plate and the third bottom guard plate shown in an embodiment;

[0022] Figure 6 is a top view schematic diagram of the bottom guard plate structure of a pure electric vehicle shown in an embodiment;

[0023] Figure 7 It is a structural schematic diagram of a reinforcement bracket shown in an embodiment.

[0024] Explanation of the accompanying drawings: 10, first bottom guard plate; 11, first water retaining portion; 111, first part; 112, second part; 12, avoidance gap; 20, second bottom guard plate; 21, second water retaining portion; 22, fourth water retaining portion; 221, third part; 222, fourth part; 23, second avoidance gap; 30, third bottom guard plate; 31, third water retaining portion; 40, battery pack; 50, reinforcement bracket. DETAILED DESCRIPTION

[0025] Exemplary embodiments are described in detail herein, with examples illustrated in the accompanying drawings. When the following description refers 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 apparatuses and methods consistent with certain aspects of the present application.

[0026] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. Unless otherwise defined, technical or scientific terms used in this application should have the ordinary meaning understood by a person of ordinary skill in the art to which this application belongs. The terms "first," "second," and similar terms used in this application do not denote any order, quantity, or importance, but are simply used to distinguish different components. Similarly, terms such as "a" or "an" do not denote a quantitative limitation, but rather indicate the presence of at least one. If only "a" is referred to, this will be separately stated. "Multiple" or "several" means two or more. Unless otherwise indicated, terms such as "front," "rear," "lower," and / or "upper," "top," and "bottom" are used for convenience of description only and are not limited to a single position or spatial orientation. Terms such as "include" or "comprising" mean that the elements or objects listed before "include" or "comprising" include the elements or objects listed after "include" or "comprising" and their equivalents, and do not exclude other elements or objects. The words “connected” or “connected” and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0027] The present application provides an underbody guard plate structure and a vehicle. The underbody guard plate structure and the vehicle are described in detail below with reference to the accompanying drawings. The technical features in the following implementation modes and embodiments can be combined with each other unless there is any conflict.

[0028] Embodiments of the present application provide a bottom guard structure, which can be applied to vehicles. Among them, the vehicle can be a sedan, a truck, a freight car, a sport utility vehicle or any other type of vehicle with a battery. In one embodiment, the vehicle is a high-voltage traction battery-powered electric vehicle (for example, a battery electric vehicle (BEV), a hybrid electric vehicle (HEV), a plug-in hybrid electric vehicle (PHEV), etc.). In another embodiment, the vehicle is an autonomous vehicle, which can control the maneuvering functions of the vehicle by itself without direct input from a human driver.

[0029] Reference Figure 1 , the bottom guard structure includes a first bottom guard 10, and the first bottom guard 10 is fixedly arranged at the rear end of the battery pack 40 of the vehicle. Specifically, the first bottom guard 10 can be fixedly connected to two longitudinal beams arranged at intervals in the vehicle width direction, so that the first bottom guard 10 is located at the rear end of the battery pack 40; or, the first guard 10 can be connected to two sill beams arranged at intervals in the vehicle width direction, and the first bottom guard 10 can also be arranged at the rear end of the battery pack 40, but not limited thereto. The height of the lowest point of the first bottom guard 10 is higher than the height of the lowest point of the battery pack 40. In this way, when the vehicle is driving on a road surface with water accumulation, snow accumulation, etc., since the lowest point of the first bottom guard 10 is higher than the lowest point of the battery pack 40, the first bottom guard 10 can shovel as little water and snow as possible under the shielding of the battery pack 40, preventing a large amount of rain and snow from entering the first bottom guard 10. At the same time, during the driving process of the vehicle, the battery pack 40 can also block the wind for the first bottom guard 10, which is beneficial to reducing the wind resistance during the driving process of the vehicle. Among them, the distance between the height of the lowest point of the first bottom guard 10 and the height of the lowest point of the battery pack 40 can be 2mm, 3mm, 4mm, 5mm, 10mm, etc., but not limited thereto.

[0030] Reference Figure 2 and Figure 3 , in one embodiment, the bottom guard structure further includes a second bottom guard 20 fixedly installed on the first rear subframe, and the height of the lowest point of the second bottom guard 20 is higher than the height of the lowest point of the battery pack 40. Similarly, when the second bottom guard 20 protects the components at the bottom of the vehicle, it can also shovel as little water and snow as possible, preventing a large amount of rain and snow from entering the second bottom guard 20, and at the same time is beneficial to reducing the wind resistance.

[0031] It should be noted that since the second underbody guard 20 is fixedly connected to the first rear subframe, it will follow the first rear subframe in the vehicle's height direction during driving. Therefore, the second underbody guard 20 has an upper limit position and a lower limit position. The upper limit position refers to the position where the second underbody guard 20 moves to its highest point, and the lower limit position refers to the position where the second underbody guard 20 moves to its lowest point. The above-mentioned "the height of the lowest point of the second underbody guard 20 is higher than the height of the lowest point of the battery pack 40" means that the height of the lowest point of the second underbody guard 20 when in the lower limit position is higher than the height of the lowest point of the battery pack 40.

[0032] refer to Figure 3 In one embodiment, a second water retaining portion 21 is provided at one end of the second bottom guard plate 20 adjacent to the first bottom guard plate 10. The second water retaining portion 21 extends upward. The second water retaining portion 21 forms an upwardly extending water barrier at the edge of the second bottom guard plate 20, preventing water flowing due to vehicle movement from flowing into the second bottom guard plate 20, thereby improving the vehicle's waterproof performance in flooded road conditions.

[0033] In one embodiment, a first water retaining portion 11 is provided at one end of the first bottom guard plate 10 near the second bottom guard plate 20, and the first water retaining portion 11 covers the second water retaining portion 21. Thus, on the one hand, the first water retaining portion 11 can prevent accumulated water from flowing from the first water retaining portion 11 to the first bottom guard plate 10; on the other hand, the first water retaining plate covers the second water retaining portion 21, forming two water barriers, which can prevent accumulated water splashed by the movement of the vehicle from flowing onto the first bottom guard plate 10 and the second bottom guard plate 20.

[0034] In a specific embodiment, the first water retaining portion 11 includes a first portion 111 and a second portion 112 connected to each other. The first portion 111 is positioned above the second water retaining portion 21, and the second portion 112 is positioned in front of the second water retaining portion 21. The first portion 111 is positioned above the second water retaining portion 21 to effectively block water from directly below the vehicle, preventing it from flowing vertically over the first and second bottom guard plates 10, 20. The second portion 112 is positioned in front of the second water retaining portion 21 to prevent water splashing from the rear of the vehicle from entering the first bottom guard plate 10.

[0035] like Figure 3 In the illustrated embodiment, the first water retaining portion 11 is integrally formed with the first bottom guard plate 10. The first water retaining portion 11 is an inverted L-shaped plate-like structure. Specifically, the second portion 112 bends upward and extends from the edge of the first bottom guard plate 10, and the first portion 111 extends horizontally from the second portion 112 toward an end away from the first bottom guard plate 10. The second water retaining portion 21 is integrally formed with the second bottom guard plate 20. The second water retaining portion 21 is a plate-like structure and bends upward from the edge of the second bottom guard plate 20.

[0036] In one embodiment, the first water baffle portion 11 and the second water baffle portion 21 are provided with a clearance gap 12. When the second bottom guard plate 20 moves between the above-mentioned upper limit position and lower limit position, the first water baffle portion 11 and the second water baffle portion 21 are always separated through the clearance gap 12. In other words, during the movement of the second bottom guard plate 20, the second water baffle portion 21 located at the edge of the second bottom guard plate 20 and the first water baffle portion 11 located at the edge of the first bottom guard plate 10 will not interfere with each other, that is, the first water baffle portion 11 and the second water baffle portion 21 will never come into contact, thereby avoiding mutual interference between the first water baffle portion 11 and the second water baffle portion 21.

[0037] The size of the clearance gap 12 is related to different vehicle body architectures. Therefore, the specific value of the clearance gap 12 is not limited in this embodiment.

[0038] In the embodiment shown in the figure, the second bottom guard plate 20 also has a natural position, which refers to the position where the second bottom guard plate 20 is located when the vehicle is stationary on a flat road section. When the second bottom guard plate 20 is in the natural position: in the height direction of the vehicle, the clearance gap 12 between the first part 111 of the first water baffle portion 11 and the top end of the second water baffle portion 21 is not less than 10 mm; in the length direction of the vehicle, the clearance gap 12 between the second part 112 of the first water baffle portion 11 and the front end of the second water baffle portion 21 is not less than 10 mm, but it is not limited thereto. It is easy to understand that the minimum value of the clearance gap 12 is related to the maximum movement amplitude of the second bottom guard plate 20. That is to say, in this embodiment, the movement amplitude of the second bottom guard plate 20 in the up and down direction is not greater than 10 mm, and the movement amplitude in the front and back direction is also not greater than 10 mm. It should be noted that the maximum value of the above-mentioned clearance gap 12 is not limited, but its maximum value is limited by the actual specific wheelbase, vehicle length and other data of the vehicle. Those skilled in the art can design the specific value of the clearance gap 12 according to the actual situation.

[0039] Reference Figure 4 and Figure 5 In some embodiments, when the vehicle is a six-wheel drive model, the vehicle further includes a second rear subframe, and the bottom guard plate structure further includes a third bottom guard plate 30 fixedly installed on the second rear subframe. The third bottom guard plate 30 is located behind the second bottom guard plate 20, and the height of the lowest point of the third bottom guard plate 30 is higher than the height of the lowest point of the battery pack 40. Thus, when the vehicle is driving on a road surface with water accumulation, snow accumulation, etc., since the lowest point of the third bottom guard plate 30 is higher than the lowest point of the battery pack 40, under the shielding of the battery pack 40, the third bottom guard plate 30 can shovel as little water and snow as possible, preventing a large amount of rain and snow from entering the third bottom guard plate 30. At the same time, during the driving of the vehicle, the battery pack 40 can also block the wind for the third bottom guard plate 30, which is beneficial to reducing the wind resistance during the driving of the vehicle.

[0040] Similarly, because the third underbody guard 30 is fixedly connected to the second rear subframe, it will follow the second rear subframe in the vehicle's height direction during driving. Therefore, the third underbody guard 30 has a second upper limit position and a second lower limit position, where the second upper limit position refers to the position where the third underbody guard 30 moves to its highest point, and the second lower limit position refers to the position where the third underbody guard 30 moves to its lowest point. The phrase "the lowest point of the third underbody guard 30 is higher than the lowest point of the battery pack 40" means that the lowest point of the third underbody guard 30 in the second lower limit position is higher than the lowest point of the battery pack 40.

[0041] refer to Figure 5 In one embodiment, the third bottom guard plate 30 has a third water retaining portion 31 bent upward at one end close to the second bottom guard plate 20, and the second bottom guard plate 20 has a fourth water retaining portion 22 at one end close to the third bottom guard plate 30, and the fourth water retaining portion 22 is covered on the third water retaining portion 31.

[0042] like Figure 5 In the illustrated embodiment, the third water retaining portion 31 and the fourth water retaining portion 22 are both plate-like structures. Specifically, the third water retaining portion 31 extends upward from the front edge of the third bottom guard plate 30, and the fourth water retaining portion 22 is an inverted L-shaped structure. The fourth water retaining portion 22 includes a connected third portion 221 and a fourth portion 222. The third portion 221 is located above the third water retaining portion 31, and the fourth portion 222 is located in front of the third water retaining portion 31. In this way, the third portion 221 can effectively block water from directly below the vehicle, preventing it from crossing the second bottom guard plate 20 and the third bottom guard plate 30 in the vertical direction; the fourth portion 222 is located in front of the third water retaining portion 31, which can prevent water splashing from the rear of the vehicle from jumping into the second bottom guard plate 20.

[0043] In one embodiment, the third water retaining portion 31 and the fourth water retaining portion 22 are provided with a second avoidance gap 23 for avoiding each other. When the second bottom guard plate 20 moves between the upper limit position and the lower limit position and when the third bottom guard plate 30 moves between the second upper limit position and the second lower limit position, the third water retaining portion 31 and the fourth water retaining portion 22 are always separated by the second avoidance gap 23. That is, during the respective movements of the second bottom guard plate 20 and the third bottom guard plate 30, the third water retaining portion 31 located at the front edge of the third bottom guard plate 30 and the fourth water retaining portion 22 located at the rear edge of the second bottom guard plate 20 will not interfere with each other.

[0044] In a specific embodiment, the third bottom guard plate 30 further has a second natural position, which refers to the position of the third bottom guard plate 30 when the vehicle is stationary on a flat road section. When the second bottom guard plate 20 is in the natural position and the third bottom guard plate 30 is in the second natural position, in the height direction of the vehicle, the third part 221 of the fourth water blocking part 22 and the second avoidance gap 23 at the top of the third water blocking part 31 are not less than 15 mm; in the length direction (front-back direction) of the vehicle, the second avoidance gap 23 between the rear end of the fourth part 222 and the front end of the third water blocking part 31 is not less than 15 mm. For the specific principle and effect, reference can be made to the above description of the first water blocking part 11 and the second water blocking part 21, and this embodiment will not be elaborated herein. It should be noted that there is no limit on the maximum value of the second avoidance gap 23, but its maximum value is limited by the actual specific wheelbase, vehicle length and other data of the vehicle, and those skilled in the art can design the specific value of the second avoidance gap 23 according to the actual situation.

[0045] The embodiment of the present application provides a vehicle, including the bottom guard plate structure described in any of the above embodiments. Among them, when the wheelbase, vehicle length, etc. of the vehicle change, those skilled in the art can adjust the length of the first bottom guard plate 10 to meet the requirements of different vehicle models.

[0046] In one embodiment, referring to Figures 1 to 5 , when the vehicle is an extended-range vehicle, the vehicle includes a fuel tank and a battery pack 40, and the first bottom guard plate 10 is fixedly connected to the two longitudinal beams of the vehicle by bolts, so that the first bottom guard plate 10 is fixed at the rear end (not shown) of the fuel tank and the battery pack 40. In another embodiment, referring to Figure 6 and Figure 7 shown, when the vehicle is a pure electric vehicle, the vehicle includes a battery pack 40, a first rear subframe and a reinforcing bracket 50; wherein, the reinforcing bracket 50 connects the first rear subframe and the battery pack 40, and the first bottom guard plate 10 is fixedly connected to the reinforcing bracket 50 by bolts, that is, the first bottom guard plate 10 is fixedly arranged at the rear end of the battery pack 40 through the reinforcing bracket 50. By arranging the reinforcing bracket 50 between the first rear subframe and the battery pack 40, the overall connection strength of the battery pack 40, the first rear subframe and the vehicle body is strengthened, the stiffness of the mounting point of the first rear subframe is improved, and at the same time, vibration can be reduced and noise can be lowered. At the same time, the reinforcing bracket 50 also provides an installation space and position for the first bottom guard plate 10, so that the first bottom guard plate 10 can be relatively easily arranged at the rear end of the battery pack 40.

[0047] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the scope of protection of the present application.

Claims

1. A bottom guard plate structure, characterized in that, Comprising: A first bottom guard plate, fixedly arranged at the rear end of the battery pack of the vehicle, and the height of the lowest point of the first bottom guard plate is higher than the height of the lowest point of the battery pack.

2. The bottom guard plate structure according to claim 1, characterized in that, The bottom guard plate structure further includes a second bottom guard plate fixedly installed on the first rear subframe, and the height of the lowest point of the second bottom guard plate is higher than the height of the lowest point of the battery pack.

3. The bottom guard plate structure according to claim 2, characterized in that, One end of the second bottom guard plate close to the first bottom guard plate is provided with a second water blocking part, and the second water blocking part extends upward.

4. The bottom guard plate structure according to claim 3, wherein, One end of the first bottom guard plate close to the second bottom guard plate is provided with a first water blocking part, and the first water blocking part covers the second water blocking part.

5. The bottom guard plate structure according to claim 4, characterized in that, The first water blocking part includes a first part and a second part connected to each other. The first part covers above the second water blocking part, and the second part covers the front side of the second water blocking part.

6. The bottom guard plate structure according to claim 4, wherein An avoidance gap is provided between the first water blocking part and the second water blocking part. The second bottom guard plate has an upper limit position and a lower limit position. When the second bottom guard plate moves between the upper limit position and the lower limit position, the second water blocking part and the first water blocking part are always separated through the avoidance gap.

7. The bottom guard plate structure according to any one of claims 2 to 6, characterized in that The bottom guard plate structure further includes a third bottom guard plate fixedly installed on the second rear subframe. The third bottom guard plate is located behind the second bottom guard plate, and the height of the lowest point of the third bottom guard plate is higher than the height of the lowest point of the battery pack.

8. The bottom guard plate structure according to claim 7, characterized in that One end of the third bottom guard plate close to the second bottom guard plate is bent upward to form a third water blocking part. One end of the second bottom guard plate close to the third bottom guard plate is provided with a fourth water blocking part, and the fourth water blocking part covers the third water blocking part.

9. A vehicle, characterized in that, Comprising: The bottom guard plate structure according to any one of claims 1 to 8; A battery pack, and the first bottom guard plate is fixedly arranged at the rear end of the battery pack.

10. The vehicle according to claim 9, characterized in that, The vehicle further includes a first rear subframe and a reinforcing bracket. The bottom guard plate structure further includes a second bottom guard plate, and the second bottom guard plate is fixedly installed on the first rear subframe. The height of the lowest point of the second bottom guard plate is higher than the height of the lowest point of the battery pack; wherein, the reinforcing bracket connects the first rear subframe and the battery pack.

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