Wind resistance reducing device for vehicle and vehicle

Abstract

The utility model relates to a vehicle wind resistance reducing device and a vehicle. The vehicle wind resistance reducing device comprises a vehicle body. The air duct is formed in the vehicle body and is provided with an air inlet and an air outlet; the air inlet is formed in the side face of the vehicle body and used for leading high-speed airflow on the side face of the vehicle body into the air duct, and the air outlet is formed in the tail of the vehicle body and used for leading high-speed airflow in the air duct into the tail of the vehicle body. When the automobile runs at a high speed, the vortex range at the tail of the automobile body is reduced, vortexes at the tail of the automobile body are far away from the surface of the automobile body, wind resistance during high-speed running of the automobile is reduced, and the cruising ability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile structures, in particular to a wind resistance reducing device for a vehicle and a vehicle. Background Art

[0002] In recent years, with the rapid development of the global automobile industry, new energy vehicles have become the focus of research and development of major automobile companies around the world. As one of the important indicators of electric vehicles, cruising range has always been the focus of consumers. In addition to the power battery capacity, vehicle weight and rolling resistance, aerodynamic resistance is also one of the main factors that determine the cruising range of electric vehicles. Especially when the car is driving at high speed, aerodynamic resistance accounts for more than 70% of all driving resistance. Therefore, reducing the drag coefficient and reducing aerodynamic resistance is one of the more effective means to increase the cruising range of electric vehicles.

[0003] When existing new energy vehicles are traveling at high speeds, the airflow outside the vehicle body will flow along the surface of the vehicle body. However, the vehicle is a non-infinitely extended structure, so the airflow sticking to the surface of the vehicle body will flow separated at the rear of the vehicle body, forming vortex patterns of different sizes and regularity. The larger the vortex at the rear of the vehicle body and the closer it is to the surface of the vehicle body, the greater the drag force generated by the vortex at the rear, resulting in greater wind resistance of the entire vehicle, affecting the vehicle's range. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a vehicle wind resistance reduction device and a vehicle, so as to solve the technical problem in the prior art that when a car is driving at high speed, vortices will be generated at the rear of the car body, resulting in large wind resistance of the entire vehicle and affecting the car's cruising range.

[0005] The utility model provides a vehicle wind resistance reducing device, comprising:

[0006] Car body;

[0007] An air duct is provided on the vehicle body and has an air inlet and an air outlet;

[0008] The air inlet is arranged at the side of the vehicle body, and is used to introduce the high-speed airflow on the side of the vehicle body into the air duct. The air outlet is arranged at the rear of the vehicle body, and is used to introduce the high-speed airflow in the air duct into the rear of the vehicle body.

[0009] Optionally, the air duct is configured to be streamlined.

[0010] Optionally, the air inlet is arranged below the triangular window on the side of the vehicle body.

[0011] Optionally, the air inlet is configured to be elliptical.

[0012] Optionally, the end point of the air inlet toward the head of the vehicle body extends into the vehicle body, so that the distance between the end point of the air inlet toward the head of the vehicle body and the axis of the vehicle body is smaller than the distance between the end face of the air inlet toward the rear of the vehicle body and the axis of the vehicle body.

[0013] Optionally, the air outlet is configured to be elliptical or circular.

[0014] Optionally, a separation line is provided between the rear portion of the vehicle body and the side of the vehicle body having the air inlet, and the air outlet is provided between the separation line and a seam line of a trunk lid at the rear portion of the vehicle body.

[0015] Optionally, the air outlet is located in the middle between the separation line and the edge seam of the trunk lid at the rear of the vehicle body.

[0016] Optionally, the air outlet of the air duct transitions to the rear surface of the vehicle body in a circular arc.

[0017] The utility model also provides a vehicle, comprising the vehicle wind resistance reducing device.

[0018] The technical solution of the utility model has the following advantages:

[0019] The vehicle wind resistance reducing device provided by the utility model has the following advantages: when the vehicle is traveling at high speed, the high-speed airflow in contact with the side of the vehicle body enters into the air duct through the air inlet arranged on the side of the vehicle body, and the high-speed airflow on the side of the vehicle body is discharged from the air outlet along the air duct and introduced into the rear of the vehicle body. At this time, the high-speed airflow flowing out from the air outlet of the air duct will impact the vortex at the rear of the vehicle body, thereby reducing the vortex at the rear of the vehicle body, reducing the vortex range at the rear of the vehicle body when the vehicle is traveling at high speed, and at the same time making the vortex at the rear of the vehicle body stay away from the surface of the vehicle body, thereby reducing the wind resistance of the vehicle when traveling at high speed and improving the endurance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is a schematic diagram of the overall structure of the vehicle wind resistance reduction device of the utility model;

[0022] Figure 2 It is a top view of the vehicle wind resistance reducing device in the utility model;

[0023] Figure 3 It is a schematic diagram of the rear part of the vehicle body in the present invention.

[0024] Description of reference numerals:

[0025] 1. Car body; 2. Air duct; 3. Air inlet; 4. Air outlet; 5. Separation line; 6. Trunk lid side seam; 7. Rear door side seam; 8. Triangular window; 9. Arc. DETAILED DESCRIPTION

[0026] The following will describe in detail a specific embodiment of the utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the utility model, not all of the embodiments. Based on the description of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Unless otherwise clearly specified and limited, the terms "disposed", "installed", "connected" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0028] The directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the utility model.

[0029] The terms "first", "second", "third" and the like are merely used to distinguish elements of similar nature, and do not indicate or imply relative importance or a particular order.

[0030] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of the elements listed and may also include additional elements not expressly listed.

[0031] Example 1

[0032] Reference Figure 1-Figure 3The utility model provides a vehicle wind resistance reduction device, comprising a vehicle body 1 and an air duct 2, wherein the vehicle body 1 is arranged in a long strip shape, and the vehicle body 1 has a head in the forward direction of vehicle travel and a tail in the backward direction of vehicle travel, the air duct 2 is opened on the vehicle body 1 and arranged along the length direction of the vehicle body 1, the air duct 2 has an air inlet 3 and an air outlet 4, the air inlet 3 is arranged on the side of the vehicle body 1, and is used to introduce the high-speed airflow on the side of the vehicle body 1 into the air duct 2, and the air outlet 4 is arranged at the tail of the vehicle body 1, and is used to introduce the high-speed airflow in the air duct 2 into the tail of the vehicle body 1.

[0033] When the vehicle is traveling at high speed, the high-speed airflow that is in contact with the side of the vehicle body 1 enters the air duct 2 through the air inlet 3 arranged on the side of the vehicle body 1, and the high-speed airflow on the side of the vehicle body 1 is discharged from the air outlet 4 along the air duct 2 and introduced into the rear of the vehicle body 1. At this time, the high-speed airflow flowing out of the air outlet 4 of the air duct 2 will impact the vortex at the rear of the vehicle body 1, thereby reducing the vortex at the rear of the vehicle body 1, reducing the range of the vortex at the rear of the vehicle body 1 when the car is traveling at high speed, and at the same time making the vortex at the rear of the vehicle body 1 away from the surface of the vehicle body 1, thereby effectively reducing the wind resistance of the vehicle when traveling at high speed and improving the endurance.

[0034] At the same time, from the visual perspective of the entire vehicle shape, the setting of the air duct 2 is conducive to the design space of the side and rear of the vehicle body 1, and it is easier to form the innovative features of the newly developed vehicle model. At the same time, when the weather is bad, the setting of the air duct 2 can introduce the high-speed airflow on the side of the vehicle body 1 when the vehicle is driving at high speed into the rear of the vehicle body 1, thereby alleviating the dust pollution at the rear of the vehicle body 1.

[0035] Specifically, the inner wall of the air duct 2 is set to be streamlined. Considering that if the inner wall of the air duct 2 is an irregular curved structure, the high-speed airflow will not flow smoothly in the air duct 2, which will cause diversion pressure loss and increase wind resistance, and will also increase the manufacturing mold cost; the setting of the streamlined air duct 2 can smoothly transition the high-speed airflow introduced from the air inlet 3 to the air outlet 4 when the vehicle is traveling at high speed, thereby reducing the wind resistance of the high-speed airflow in the air duct 2. In addition, the length of the air duct 2 can be set to 800m, and can also be adjusted according to the differences in vehicle models. Within a reasonable range, the length of the air duct 2 is set to the minimum.

[0036] The air inlet 3 can be set below the triangular window 8 on the side of the vehicle body 1, and the horizontal distance between the air inlet 3 and the end point on the bottom side of the triangular window 8 closest to the head of the vehicle body 1 is 40 mm, so that there is a gap between the air inlet 3 and the seam line 7 of the rear door of the vehicle body 1, so that the setting of the air inlet 3 will not be affected by the rear door of the vehicle body 1. The shape of the air inlet 3 can be set to an ellipse with a length of 250 mm extending along the length direction of the vehicle body 1 according to the side shape of the vehicle body 1.

[0037] Furthermore, since the side of the vehicle body 1 is streamlined, in order to better introduce the high-speed airflow flowing along the side of the vehicle body 1 into the air duct 2, the end point of the air inlet 3 toward the head of the vehicle body 1 extends toward the inside of the vehicle body 1. At this time, the end point of the air inlet 3 toward the head of the vehicle body 1 is set to be concave, so that the end point of the air inlet 3 toward the rear of the vehicle body 1 is relatively close to the end point of the head of the vehicle body 1 and protrudes out of the vehicle body 1. The distance between the end point of the air inlet 3 toward the head of the vehicle body 1 and the axis of the vehicle body 1 is set to L1, and the distance between the end point of the air inlet 3 toward the rear of the vehicle body 1 and the axis of the vehicle body 1 is L2. L1 is smaller than L2, and there is a difference of 10mm between L1 and L2, so that when the vehicle is traveling at high speed, the high-speed airflow on the side of the vehicle body 1 can enter the air duct 2 more to impact the vortex at the rear of the vehicle body 1, further reduce the wind resistance of the vehicle when traveling at high speed, and improve the endurance.

[0038] Reference Figure 2 and 3 As shown, a specific implementation is provided, a separation line 5 is provided between the rear of the vehicle body 1 and the side of the vehicle body 1 having the air inlet 3, and the air outlet 4 is provided between the separation line 5 and the side seam line 6 of the trunk lid at the rear of the vehicle body 1. Further, the air outlet 4 is located in the middle between the separation line 5 and the side seam line 6 of the trunk lid at the rear of the vehicle body 1, so that the air outlet 4 will not be affected by the trunk lid. At the same time, being provided in the middle of the two, the high-speed airflow in the air duct 2 can better impact the vortex at the rear of the vehicle, thereby reducing the wind resistance of the whole vehicle. At the same time, the shape of the air outlet 4 can be set to an elliptical shape or a circular shape, and a reasonable selection can be made according to the overall shape of the vehicle.

[0039] Furthermore, the air outlet 4 of the air duct 2 and the rear surface of the vehicle body 1 are transitioned by an arc 9 at the junction. The Coanda effect principle in fluid mechanics is cited to set the air outlet 4 of the air duct 2 into a notch shape with an arc 9. The radius of the arc 9 can be 15 mm. When the high-speed airflow in the air duct 2 is introduced into the air outlet 4, the high-speed airflow flowing along the inner wall of the air duct 2 will change the direction of the high-speed airflow at the arc 9, so that the high-speed airflow flows along the surface of the arc 9 and is dispersed along the surface of the arc 9 to the rear surface of the vehicle body 1 around the air outlet 4, thereby increasing the aerodynamic pressure at the rear of the vehicle body 1, further impacting the vortex at the rear of the vehicle body 1, reducing the vortex at the rear of the vehicle body 1, reducing the vortex range at the rear of the vehicle body 1 when the car is traveling at high speed, and keeping the vortex at the rear of the vehicle body 1 away from the surface of the vehicle body 1, further reducing the wind resistance of the vehicle when traveling at high speed, and improving the endurance.

[0040] Example 2

[0041] Reference Figure 1-Figure 3As shown, this embodiment provides a vehicle, including the vehicle wind resistance reducing device in embodiment 1. When the vehicle is traveling at high speed, the high-speed airflow that is in contact with the side of the vehicle body 1 enters the air duct 2 through the air inlet 3 arranged on the side of the vehicle body 1, and the high-speed airflow on the side of the vehicle body 1 is discharged from the air outlet 4 along the air duct 2 and introduced into the rear of the vehicle body 1. At this time, the high-speed airflow flowing out of the air outlet 4 of the air duct 2 will impact the vortex at the rear of the vehicle body 1, thereby reducing the vortex at the rear of the vehicle body 1, reducing the vortex range at the rear of the vehicle body 1 when the car is traveling at high speed, and at the same time making the vortex at the rear of the vehicle body 1 away from the surface of the vehicle body 1, thereby reducing the wind resistance of the vehicle when traveling at high speed and improving the endurance.

[0042] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0043] The above is only a specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A vehicle wind resistance reduction device, characterized in that: include: Car body; An air duct is provided on the vehicle body and has an air inlet and an air outlet; The air inlet is arranged at the side of the vehicle body, and is used to introduce the high-speed airflow on the side of the vehicle body into the air duct, and the air outlet is arranged at the rear of the vehicle body, and is used to introduce the high-speed airflow in the air duct into the rear of the vehicle body; The air outlet of the air duct transitions to the rear surface of the vehicle body in an arc.

2. The vehicle wind resistance reducing device according to claim 1, characterized in that: The air duct is configured to be streamlined.

3. The vehicle wind resistance reducing device according to claim 1, characterized in that: The air inlet is arranged below the triangular window on the side of the vehicle body.

4. The vehicle wind resistance reducing device according to claim 1, characterized in that: The air inlet is arranged in an elliptical shape.

5. The vehicle wind resistance reducing device according to claim 4, characterized in that: The end point of the air inlet toward the head of the vehicle body extends into the vehicle body, so that the distance between the end point of the air inlet toward the head of the vehicle body and the axis of the vehicle body is smaller than the distance between the end face of the air inlet toward the rear of the vehicle body and the axis of the vehicle body.

6. The vehicle wind resistance reducing device according to claim 1, characterized in that: The air outlet is configured to be elliptical or circular.

7. The vehicle wind resistance reducing device according to claim 1, characterized in that: A separation line is arranged between the rear portion of the vehicle body and the side surface of the vehicle body having the air inlet, and the air outlet is arranged between the separation line and the side seam line of the trunk lid at the rear portion of the vehicle body.

8. The vehicle wind resistance reducing device according to claim 7, characterized in that: The air outlet is located in the middle between the separation line and the side seam line of the trunk lid at the rear of the vehicle body.

9. A vehicle, characterized in that: It comprises the vehicle wind resistance reducing device as described in any one of claims 1 to 8.

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