Airflow generating device, vehicle and control method

Abstract

The invention discloses an airflow generating device, a vehicle and a control method. The technical problem that in the prior art, the aerodynamic management effect of the vehicle is poor is solved. The airflow generating device is applied to the vehicle, the airflow generating device is suitable for being arranged on the vehicle, the airflow generating device can generate first airflow or second airflow, the first airflow is used for reducing resistance borne by the vehicle, and the second airflow is used for increasing downward pressure of the vehicle.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to an airflow generating device, a vehicle and a control method. Background Art

[0002] When a car is driving, airflow has a significant impact on the vehicle. Airflow not only increases fuel consumption and reduces the vehicle's driving economy, but also interferes with handling stability. Wind noise also seriously affects driving comfort. In the existing technology, vehicle aerodynamic management cannot achieve the ideal improvement level, and the effect of aerodynamic management is not good. Summary of the invention

[0003] The object of the present invention is to provide an airflow generating device, a vehicle and a control method, aiming to solve the technical problem of poor vehicle aerodynamic management effect in the prior art.

[0004] In order to achieve the above object, the present invention adopts the following technical scheme:

[0005] In a first aspect, the present invention provides an airflow generating device, which is applied to a vehicle. The airflow generating device is suitable for being arranged on the vehicle. The airflow generating device can generate a first airflow or a second airflow. The first airflow is used to reduce the resistance of the vehicle, and the second airflow is used to increase the downforce of the vehicle.

[0006] When the vehicle is traveling, the first airflow generated by the airflow generating device can reduce the resistance encountered by the vehicle, reduce fuel or battery power consumption, improve the economy of the vehicle, and allow the vehicle to travel a longer distance with the same amount of fuel or power.

[0007] Alternatively, the second airflow generated by the airflow generating device can increase the downforce of the vehicle, which can enhance the adhesion between the vehicle and the ground when the vehicle is traveling at high speed or turning, thereby greatly improving the handling stability.

[0008] Based on this, the present application effectively optimizes the interaction between the vehicle and the airflow, significantly improves the ability to suppress the negative impact of the airflow, greatly improves the vehicle's performance in terms of economy, handling stability, and driving comfort, and solves the technical problem of poor aerodynamic management effects.

[0009] In some embodiments, the airflow generating device includes at least one vortex generating device, and the first airflow or the second airflow includes a partial vortex generated by the at least one vortex generating device.

[0010] In some embodiments, the vortex generating device has a first state, in which the vortex generating device is suitable for generating a first vortex rotating around the length direction of the vehicle, and the first airflow includes a portion of the first vortex flowing downward along the height direction of the vehicle.

[0011] In some embodiments, the vortex generating device has a second state, in which the vortex generating device generates a second vortex rotating around the length direction of the vehicle, and the second airflow includes a portion of the second vortex flowing upward along the height direction of the vehicle.

[0012] In some embodiments, the vortex generating device includes a shell and a plurality of blades, wherein the plurality of blades are disposed in the shell and arranged along the circumference of the shell.

[0013] In some embodiments, the vortex generating device includes a driving assembly connected to the plurality of blades, and the driving assembly is used to drive the plurality of blades to rotate so that the vortex generating device switches between a first state and a second state.

[0014] In some embodiments, the driving assembly includes a rotating member and a driving member, and the plurality of blades are all transmission-connected to the rotating member. The driving member is used to drive the rotating member to rotate, thereby driving the plurality of blades to rotate synchronously.

[0015] In some embodiments, the drive assembly further includes a first annular rack disposed on the housing, a second annular rack disposed on the rotating member, and a blade gear disposed on each blade, and the blade gear is meshed with the first annular rack and the second annular rack for transmission.

[0016] In a second aspect, an embodiment of the present application provides a vehicle, which includes an airflow generating device according to the first aspect or any corresponding embodiment thereof.

[0017] In some embodiments, a vehicle includes an airflow generating device according to any one of the above corresponding embodiments, the airflow generating device includes two vortex generating devices, the two vortex generating devices are suitable for being arranged at the rear of the vehicle, and are respectively arranged at both ends of the rear of the vehicle along the vehicle width direction; in a first state, the vortex generating device is suitable for generating a first vortex rotating around the length direction of the vehicle, and the first airflow includes a portion of the first vortex flowing downward along the height direction of the vehicle;

[0018] In the second state, the vortex generating device generates the second vortex rotating around the length direction of the vehicle, and the second airflow includes a portion of the second vortex flowing upward in the height direction of the vehicle.

[0019] In some embodiments, in the first state, the first vortex includes first sub-vortices generated by two vortex generating devices, and the first sub-vortices generated by the two vortex generating devices rotate in opposite directions.

[0020] In some embodiments, within the viewing angle from the rear of the vehicle to the head of the vehicle, along the width direction of the vehicle, in a first state, a first sub-vortex generated by a vortex generating device located on the left side of the two vortex generating devices rotates in a clockwise direction.

[0021] In some embodiments, in the second state, the second vortex includes second sub-vortices generated by two vortex generating devices, and the second sub-vortices generated by the two vortex generating devices rotate in opposite directions.

[0022] In some embodiments, within the viewing angle from the rear of the vehicle to the head of the vehicle, along the width direction of the vehicle, in the second state, the second sub-vortex generated by the vortex generating device located on the left side of the two vortex generating devices rotates counterclockwise.

[0023] In some embodiments, the vehicle in the present application also includes an air duct assembly, which extends along the length direction of the vehicle, and the side of the air duct assembly facing the front end of the vehicle forms an air inlet end, and the end facing the rear side of the vehicle forms an air outlet end, and the airflow generating device is arranged at the air outlet end of the air duct assembly.

[0024] In some embodiments, the air duct assembly further includes an adjusting member, which is disposed at the air outlet end and is suitable for adjusting the air outlet direction of the air outlet end.

[0025] In some embodiments, the vehicle further includes a first rear wheel and a second rear wheel; along the length direction of the vehicle, the vortex generating device is located at the rear side of the first rear wheel and / or the second rear wheel.

[0026] In a third aspect, the present application provides a control method, which is used to control the airflow generating device of the first aspect or any corresponding embodiment thereof or the vehicle of the second aspect or any corresponding embodiment thereof, and the control method includes:

[0027] When the first preset condition is met, the airflow generating device is controlled to switch to the first state so that the airflow generating device generates a first airflow.

[0028] In some embodiments, the airflow generating device includes at least one vortex generating device;

[0029] Controlling the airflow generating device to switch to a first state includes:

[0030] At least one vortex generating device is controlled to switch to a first state so that the at least one vortex generating device generates a first vortex rotating around the length direction of the vehicle, and the first airflow includes a portion of the first vortex flowing downward along the height direction of the vehicle.

[0031] In some embodiments, the vortex generating device includes a housing and a plurality of blades disposed in the housing, wherein the plurality of blades are arranged along the circumference of the housing;

[0032] Controlling at least one vortex generating device to switch to a first state comprises:

[0033] When the driving speed of the vehicle is within a first preset range, the plurality of blades are controlled to rotate by a first angle in a first direction relative to the axial direction of the housing;

[0034] When the driving speed of the vehicle is within a second preset range, the plurality of blades are controlled to rotate by a second angle along the first direction relative to the axial direction of the housing;

[0035] The maximum value in the first preset range is smaller than the minimum value in the second preset range, and the first angle is smaller than the second angle.

[0036] In some embodiments, the control method further comprises:

[0037] When the second preset condition is met, the airflow generating device is controlled to switch to the second state so that the airflow generating device generates a second airflow.

[0038] In some embodiments, controlling the airflow generating device to switch to the second state includes:

[0039] At least one vortex generating device is controlled to switch to a second state so that the at least one vortex generating device generates a second vortex rotating around the length direction of the vehicle, and the second airflow includes a portion of the second vortex flowing upward along the height direction of the vehicle.

[0040] In some embodiments, controlling the airflow generating device to switch to the second state includes:

[0041] When the driving speed of the vehicle is within a third preset range, the plurality of blades are controlled to rotate by a third angle along a second direction relative to the axial direction of the housing;

[0042] When the driving speed of the vehicle is within a fourth preset range, the plurality of blades are controlled to rotate by a fourth angle along the second direction relative to the axial direction of the housing;

[0043] The first direction is opposite to the second direction, the maximum value in the third preset range is smaller than the minimum value in the fourth preset range, and the third angle is smaller than the fourth angle.

[0044] In some embodiments, the airflow generating device or the vehicle further includes an input device, and controlling the airflow generating device to switch to the first state or the second state includes:

[0045] When an input signal is received from an input device, the plurality of blades are controlled to rotate relative to the axial direction of the housing to an angle corresponding to the input signal.

[0046] In a fourth aspect, the present application provides a controller, the controller is used to control the airflow generating device of the first aspect or any corresponding embodiment thereof or the vehicle of the second aspect or any corresponding embodiment thereof, and the controller is configured as:

[0047] When a first preset condition is met, the airflow generating device is controlled to switch to a first state so that the airflow generating device generates a first airflow;

[0048] When the second preset condition is met, the airflow generating device is controlled to switch to the second state so that the airflow generating device generates a second airflow.

[0049] In a fifth aspect, the present application provides a computer device, which includes a memory and a processor, the memory and the processor are communicatively connected to each other, computer instructions are stored in the memory, and the processor executes the control method of the third aspect or any corresponding embodiment thereof by executing the computer instructions.

[0050] In a sixth aspect, the present application provides a computer-readable storage medium having computer instructions stored thereon, the computer instructions being used to enable a computer to execute the control method of the third aspect or any corresponding embodiment thereof.

[0051] It should be noted that the technical effects brought about by the implementation methods of the second to sixth aspects can refer to the technical effects brought about by the corresponding implementation methods in the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0053] Figure 1 One of the side views of a vehicle provided in an embodiment of the present application;

[0054] Figure 2 This is a second side view of a vehicle provided in an embodiment of the present application;

[0055] Figure 3 This is a third side view of a vehicle provided in an embodiment of the present application;

[0056] Figure 4 A schematic diagram of gas flow in a vehicle chassis provided in an embodiment of the present application;

[0057] Figure 5 This is one of the working schematic diagrams of the gas generating device under the low wind resistance state provided in the embodiment of the present application;

[0058] Figure 6 The second working schematic diagram of the gas generating device under low wind resistance state provided in the embodiment of the present application;

[0059] Figure 7 An oblique view of a vehicle provided in an embodiment of the present application;

[0060] Figure 8 Another oblique view of a vehicle provided in an embodiment of the present application;

[0061] Fig. 9 This is one of the working schematic diagrams of the gas generating device in the down pressure mode provided in the embodiment of the present application;

[0062] Fig.10 The second working schematic diagram of the gas generating device in the down pressure mode provided in the embodiment of the present application;

[0063] Fig.11 A schematic diagram of the structure of a vortex generating device provided in an embodiment of the present application;

[0064] Fig.12 This is one of the schematic diagrams of the working state of a vortex generating device provided in the embodiment of the present application;

[0065] Fig.13 This is a second schematic diagram of a working state of a vortex generating device provided in an embodiment of the present application;

[0066] Fig.14 The third schematic diagram of the working state of a vortex generating device provided in the embodiment of the present application;

[0067] Fig.15 This is a fourth schematic diagram of the working state of a vortex generating device provided in an embodiment of the present application;

[0068] Fig.16 The present invention provides a flow chart of a control method according to an embodiment of the present application.

[0069] Reference numerals:

[0070] 100, vehicle; 101, air duct assembly; 1011, air inlet end; 1012, air outlet end; 102, first rear wheel; 103, second rear wheel; 104, chassis; 200, vortex generating device; 201, shell; 2011, first annular rack; 202, blade; 2021, blade body; 2022, connecting column; 2023, blade gear; 203, rotating member; 2031, second annular rack; 204, driving member; 205, first vortex; 205a / 205b, first sub-vortex; 2051, first airflow; 206, second vortex; 206a / 206b, second sub-vortex; 2061, second airflow. DETAILED DESCRIPTION

[0071] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0072] In the description of this application, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", "inside", "outside", etc. indicate directions or positional relationships based on the directions or relative positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on this application. Unless otherwise specified, the above-mentioned directional description can be flexibly set in the process of actual application under the condition that the relative positional relationship shown in the accompanying drawings is met.

[0073] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0074] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "connected" 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 directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0075] In the present application, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, article or device including the element.

[0076] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0077] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0078] Vehicles traveling at high speed in an airflow environment have to consume a lot of energy to overcome air resistance.

[0079] Taking a common driving scenario as an example, when the vehicle speed reaches 90 kilometers per hour, air resistance accounts for about 55% of all forces that hinder the vehicle's progress, and has become a key factor in energy consumption.

[0080] The airflow from the chassis interacts with the airflow from other directions around the vehicle as it flows toward the rear of the vehicle. If the speed and direction of the airflow from the chassis are not well controlled, it may form a complex vortex at the rear of the vehicle with the airflow from the top and sides of the vehicle, affecting the vehicle's driving.

[0081] Based on this, see Figure 1 The present application provides a vehicle 100. The vehicle 100 in the present application may be a pure electric vehicle, a hybrid electric vehicle, a plug-in hybrid vehicle, a fuel vehicle, etc. The vehicle types in the present application include sedans, off-road vehicles, buses, semi-trailers, trucks, container vehicles, etc. The present application does not specifically limit the above.

[0082] Exemplarily, the arrangement direction of the front and the rear of the vehicle is the length direction of the vehicle 100 , the arrangement direction of the roof and the bottom of the vehicle is the height direction of the vehicle 100 , and the width direction of the vehicle 100 is perpendicular to the length direction of the vehicle 100 and the height direction of the vehicle 100 .

[0083] In some embodiments, the present application further provides an airflow generating device, which is applied to the above-mentioned vehicle 100, and the airflow generating device can actively intervene in the airflow around the vehicle 100. Different from the traditional method of guiding the airflow only by the body shape, it can generate appropriate airflow according to the driving state of the vehicle 100 (such as speed, road conditions, etc.), change the air pressure distribution around the vehicle 100, and thus effectively reduce air resistance.

[0084] Turbines are usually generated when an object moves in a fluid, and the flow state of the fluid changes due to factors such as the shape and surface texture of the object. It is not difficult to see that in the above process, the airflow generating device in the present application plays a turbulent role. The airflow generating device can generate a suitable airflow at the rear of the vehicle 100 to improve the wake and vortex conditions. It can guide the originally turbulent wake into a more orderly airflow, reduce energy loss, and reduce air resistance.

[0085] In some embodiments, see Figure 1 Combined with Figure 2 The vehicle 100 includes an air duct assembly 101, which extends along the length direction of the vehicle 100, and a side of the air duct assembly 101 facing the front end of the vehicle 100 forms an air inlet end 1011, and an end facing the rear side of the vehicle 100 forms an air outlet end 1012, and an airflow generating device is arranged at the air outlet end 1012 of the air duct assembly 101.

[0086] Exemplarily, the air inlet end 1011 is disposed at the front end of the vehicle 100 , for example, near a water channel of a front hood.

[0087] It should be noted that the airflow generating device is disposed in the air outlet end 1012 of the air duct assembly 101, and can also be disposed on the outer peripheral side of the air outlet end 1012 of the air duct assembly 101, and this application does not limit this.

[0088] During the driving process of the vehicle 100, relative movement will be generated between the air and the vehicle 100 to form an airflow, and the airflow flows from the air inlet end 1011 to the air outlet end 1012. The airflow generating device changes the flow direction of the airflow and generates a turbulent effect on it. The turbulent effect generated by the airflow generating device can adjust the original airflow state around the vehicle 100, change the pressure distribution of the airflow at the rear of the vehicle, etc., so as to improve the aerodynamic performance of the vehicle 100, thereby reducing air resistance and improving the handling stability of the vehicle 100.

[0089] This application takes the airflow after the turbulence of the airflow generating device changing the airflow of the chassis 104 at the rear of the vehicle as an example for illustrative explanation. In this application, the airflow generating device can disturb the original flow vortex structure and the flow of the airflow at the rear of the vehicle.

[0090] Specifically, the air inlet end 1011 of the air duct assembly 101 may be an air inlet opened on the vehicle body, and the air inlet may be arranged around the D-pillar or C-pillar of the vehicle 100. The air outlet end 1012 of the air duct assembly 101 may be an air outlet opened on the vehicle body, and the air outlet is arranged at the rear of the vehicle.

[0091] In addition, the present application may also set the airflow generating device at other air duct components 101 to play a spoiler role. The present application only uses the vehicle 100 as an example to illustrate the specific application, and does not constitute a limitation to the present application.

[0092] In some embodiments, the distance between the air inlet end 1011 of the air duct assembly 101 and the C-pillar or the D-pillar of the vehicle 100 is less than or equal to 100 mm.

[0093] On this basis, when the vehicle 100 is traveling, the flow of air around the vehicle body has a great influence on the wind resistance. Placing the air inlet end 1011 of the air duct assembly 101 close to the C-pillar or D-pillar can make the air flow transition from the side of the vehicle body to the rear more smoothly, reduce the separation of air flow and the generation of vortices, thereby reducing wind resistance and improving the fuel economy and driving stability of the vehicle 100.

[0094] In some embodiments, see Figure 3 The vehicle 100 further includes a chassis 104, which is located at the bottom of the vehicle 100. The chassis 104 mainly includes a frame, a suspension system, a transmission system component, a steering system, and a braking system. When the vehicle 100 is running, airflow will pass under the chassis 104. When the speed of the vehicle 100 is low, the airflow under the chassis 104 is relatively stable. As the speed increases, the speed of the airflow under the chassis 104 will also increase.

[0095] Before introducing the airflow generating device in the present application, the present application first specifically introduces the flowing gas flowing from the bottom of the chassis 104 of the vehicle 100 to the rear of the vehicle 100 during the driving process of the vehicle 100. It should be noted that during the actual driving process of the vehicle 100, due to the irregular motion characteristics of gas molecules, the flow direction of the flowing gas is by no means limited to a single, fixed direction, but presents a more complex dynamic change. The limitations made on various directions in the present application are only relative limitations based on the general trend of the gas flow direction, and are not absolutely accurate and unbiased definitions.

[0096] For ease of explanation, the present application uses three different directions of flowing gas at the rear of the vehicle as an example, but it does not mean that the airflow generating device in the present application only affects the gas in these three directions.

[0097] See also Figure 3 Combined with Figure 4 When the flowing gas flows from the chassis 104 of the vehicle 100 to the rear of the vehicle, at least three paths of flowing gas are formed. The gas flowing along the first path is the flowing gas with the same flow direction as the driving direction of the vehicle 100, that is, the gas flowing along the first path is the flowing gas with the same flow direction as the driving direction of the vehicle 100. Figure 6The gas flowing along the second path is the gas flowing upward along the height direction of the vehicle 100, that is, along Figure 6 The gas flowing along the third path is the gas flowing in the opposite direction of the vehicle 100, that is, along Figure 6 Gas flowing in the S3 direction.

[0098] In some embodiments, the airflow generating device in the present application is suitable for being arranged on the vehicle 100 , and the airflow generating device can generate a first airflow 2051 or a second airflow 2061 , the first airflow 2051 is used to reduce the resistance of the vehicle 100 , and the second airflow 2061 is used to increase the downforce of the vehicle 100 .

[0099] The working process of the airflow generating device in the present application is described below by taking the airflow generating device in the present application generating the first airflow 2051 in the first state and generating the second airflow 2061 in the second state.

[0100] In some embodiments, the first airflow 2051 flows downward along the height direction of the vehicle 100, see Figure 5 Combined with Figure 6 In the first state, the airflow generating device can generate a first airflow 2051 located at the rear side of the vehicle 100 and flowing downward along the height direction of the vehicle 100, wherein the airflow generated by the airflow generating device includes but is not limited to the first airflow 2051, and the direction of the first airflow 2051 is not limited to flowing downward along the height direction of the vehicle 100. The airflow generating device can also generate gas flowing in other directions. This application only takes the first airflow 2051 flowing downward along the height direction of the vehicle 100 as an example.

[0101] For the sake of convenience of explanation, the first state of the present application is that the vehicle 100 is in a low wind resistance state for exemplary purposes. It should be noted that the low wind resistance state means that the air resistance encountered by the vehicle 100 during driving is relatively small, but is not limited to the vehicle 100 being in a low speed state. The wind resistance encountered by the vehicle 100 is also affected by factors such as the appearance design, driving posture and environment.

[0102] See also Figure 5 Combined with Figure 6 When the first airflow 2051 flows from top to bottom along the height direction of the vehicle 100, it will Figure 6 In this process, due to the impact of the first airflow 2051, the gas originally flowing in the direction S2 collides with the gas originally flowing in the direction S3. Figure 6 The gas flowing in the S2 direction is blocked and can no longer flow smoothly along the original path. According to the law of conservation of mass, during this dynamic change, the total amount of the entire gas system is constant. Figure 6When the gas flowing in the S2 direction is blocked, more gas will inevitably be diverted along Figure 6 The flow in the S1 direction makes the Figure 6 The amount of gas flowing in the direction S1 increases significantly. The increase in gas flow means that the driving force generated on the rear of the vehicle will also increase, and this driving force can effectively promote the vehicle 100 to continue moving along the originally predetermined driving direction without causing any obstacles to the forward movement of the vehicle 100.

[0103] In other words, through the changes in the above-mentioned gases, it is not difficult to see that under the action of the first airflow 2051, in the dynamic process of low wind resistance driving of the vehicle 100, the gas generating device successfully optimizes the airflow field at the rear of the vehicle 100, and effectively reduces the wind resistance of the vehicle 100 in the low wind resistance state, creating more favorable conditions for energy saving and fast driving of the vehicle 100.

[0104] On this basis, the present application further explains the above contents of the present application by taking the airflow generating device as the vortex generating device 200 .

[0105] In some embodiments, see Figure 5 Combined with Figure 7 The airflow generating device includes at least one vortex generating device 200, and the first airflow 2051 includes a partial vortex generated by at least one vortex generating device 200. In other words, the vortex generating device has a first state. In the first state, the vortex generating device 200 is suitable for generating a first vortex 205 rotating around the length direction of the vehicle 100, and the first airflow 2051 includes a partial first vortex 205 flowing downward along the height direction of the vehicle 100.

[0106] Eddy current is a kind of rotational motion of a fluid, which is characterized by the fluid moving in a circular or quasi-circular manner around a central axis or a local area. Figure 5 as well as Figure 6 From the perspective of FIG. 1 , the vortex generating device 200 can cause the gas at the air outlet of the air duct assembly 101 to rotate around the axis of the air outlet to generate a first airflow 2051 located at the rear side of the vehicle 100 and flowing downward along the height direction of the vehicle 100 .

[0107] By utilizing the mutual mixing effect between the vortex generating device 200 and the vortex near the vehicle body, the flow vortex generated by the vehicle body can be weakened, the induced resistance can be reduced, and the drag reduction function can be effectively achieved.

[0108] It should be noted that the vortex generating device 200 in the present application can be one, two or more than two, and the present application does not limit this. When there are two or more vortex generating devices 200, at least two vortex generating devices 200 are arranged opposite to each other and the first vortex 205 generated by the two vortex generating devices 200 are generated in different directions, so that the first airflows 2051 generated by the two vortex generating devices 200 can converge together. The present application is exemplified by taking the number of the vortex generating devices 200 as two.

[0109] In some embodiments, see Figure 8 There are two vortex generating devices 200, and the two vortex generating devices 200 are suitable for being arranged at the rear of the vehicle 100, and are respectively arranged at both ends of the rear of the vehicle 100 along the vehicle width direction to balance the gas pressure at the rear of the vehicle 100 and enhance the stability of the vehicle during driving.

[0110] In some embodiments, in the first state, the first vortex 205 includes a first sub-vortex generated by both vortex generating devices 200, and the rotation directions of the first sub-vortices generated by the two vortex generating devices 200 are opposite. At this time, the first sub-vortices generated by the two vortex generating devices 200 both rotate toward the interior of the vehicle.

[0111] For the sake of distinction, the present application marks the first sub-vortex generated by the vortex generating device 200 located on the left side as the first sub-vortex 205a, and the first sub-vortex generated by the vortex generating device 200 located on the right side as the first sub-vortex 205b within the viewing angle from the rear of the vehicle 100 to the head of the vehicle 100. Along the width direction of the vehicle 100, in the first state, the first sub-vortex 205a generated by the vortex generating device 200 located on the left side of the two vortex generating devices 200 rotates in a clockwise direction, and the first sub-vortex 205b generated by the vortex generating device 200 located on the left side of the two vortex generating devices 200 rotates in a counterclockwise direction.

[0112] For ease of explanation, this application describes the direction of the vortex in clockwise and counterclockwise terms, but this is merely a simplified way of expression for ease of explanation. The basis for determining the direction of the first vortex 205 will depend on many complex factors and is not limited to this simple clockwise or counterclockwise description. Its actual direction may be dynamically adjusted with changes in conditions such as the driving condition of the vehicle 100 and the surrounding airflow environment.

[0113] On this basis, see Figure 5, two vortex generating devices 200 are arranged at intervals along the width direction of the vehicle 100, the first sub-vortex 205a rotates in the clockwise direction, and the first sub-vortex 205b rotates in the counterclockwise direction. The first sub-vortex 205a and the first sub-vortex 205b are located in the middle part of the rear of the vehicle 100 and can form a first airflow 2051. The two first airflows 2051 formed can both flow downward along the height direction of the vehicle 100, that is, the two first airflows 2051 can converge in the middle part of the two vortex generating devices 200 into airflows that flow downward at the same time, so as to act on the gas flowing upward under the chassis 104 of the vehicle 100.

[0114] In some embodiments, see Fig. 9 Combined with Fig.10 The airflow generating device also has a second state and can switch between the first state and the second state. In the second state, the airflow generating device can generate a second airflow 2061 located at the rear side of the vehicle 100 and flowing upward along the height direction of the vehicle 100.

[0115] Taking the airflow generating device in the present application as a vortex generating device 200 as an example, the second airflow 2061 includes at least one partial vortex generated by the vortex generating device 200 .

[0116] Correspondingly, the vortex generating device 200 has a second state, in which the vortex generating device 200 generates a second vortex 206 rotating around the length direction of the vehicle 100 .

[0117] In other embodiments, the vortex generating device 200 can be switched between a first state and a second state to implement different functions for the vehicle 100 .

[0118] For ease of explanation, the second state of the present application is that the vehicle 100 is in the downforce mode for exemplary purposes. The vehicle 100 being in the downforce mode means that when the vehicle 100 is traveling, when it is necessary to increase the adhesion of the vehicle 100 to the ground, the downward pressure of the vehicle 100 is increased. This downward pressure can increase the adhesion of the tires to the ground, thereby improving the handling performance of the vehicle 100.

[0119] It should be noted that the downforce mode is by no means limited to the single state of the vehicle 100 being in high-speed driving. In many daily driving scenarios, as long as there are situations where there are high requirements for the handling stability of the vehicle 100, such as driving on a slippery road, the vehicle 100 faces water and mud, and is prone to the risk of slipping; or when the mountain road is winding and there are frequent turns, the vehicle 100 needs to be closely attached to the road surface to ensure safety, the downforce mode can play its key role and help the driver calmly deal with various complex road conditions. This application only takes the vehicle 100 in a high-speed state as an example.

[0120] The operation of the airflow generating device in the second state in the present application is described in detail below.

[0121] See also Fig. 9 , Fig.10 Combined with the above Figure 6 When the first airflow 2051 flows upward along the height direction of the vehicle 100, it will Figure 6 In this process, the first airflow 2051 can combine with the gas flowing in the direction of S2 by virtue of its own kinetic energy and flow characteristics. Figure 6 The gas flowing in the S2 direction exerts a significant driving force, Figure 6 The flow rate of the gas flowing in the direction S2 is greatly accelerated. In this way, the gas under the chassis 104 of the vehicle 100 can also flow quickly under the drive of this accelerated airflow, and according to the basic principles of fluid mechanics (such as Bernoulli's principle), the acceleration of the gas flow rate will inevitably lead to a decrease in the air pressure in the area where it is located. Therefore, the air pressure under the chassis 104 of the vehicle 100 becomes lower, forming a clear pressure difference with the relatively high air pressure above the vehicle 100. The existence of this pressure difference can effectively increase the adhesion between the vehicle 100 and the ground, thereby enhancing the stability of the vehicle 100 during driving.

[0122] In some embodiments, see Fig. 9 Combined with Figure 5 In the second state, the vortex generating device 200 is used to generate a second vortex 206 rotating around the length direction of the vehicle 100. In the second state, the second vortex 206 includes a second sub-vortex generated by both vortex generating devices 200, and the second sub-vortices generated by the two vortex generating devices 200 have opposite rotation directions to form a second airflow 2061 flowing upward along the height direction of the vehicle at the middle position of the two vortex generating devices 200.

[0123] In some embodiments, see Fig. 9 Combined with Figure 5 , within the viewing angle from the tail of the vehicle 100 to the head of the vehicle 100, along the width direction of the vehicle 100, in the second state, the second sub-vortex generated by the vortex generating device 200 located on the left side of the two vortex generating devices 200 rotates in a counterclockwise direction, and the second sub-vortex generated by the vortex generating device 200 located on the right side of the two vortex generating devices 200 rotates in a clockwise direction.

[0124] For the sake of distinction, the present application marks the second sub-vortex generated by the vortex generating device 200 located on the left side as the second sub-vortex 206a, and the second sub-vortex generated by the vortex generating device 200 located on the right side as the second sub-vortex 206b within the viewing angle from the rear of the vehicle 100 to the head of the vehicle 100. Along the width direction of the vehicle 100, in the first state, the second sub-vortex 206a generated by the vortex generating device 200 located on the left side of the two vortex generating devices 200 rotates in the counterclockwise direction, and the second sub-vortex 206b generated by the vortex generating device 200 located on the right side of the two vortex generating devices 200 rotates in the clockwise direction.

[0125] On this basis, the second airflow 2061 includes a portion of the second vortex 206 flowing upward along the height direction of the vehicle 100. In other words, the second sub-vortex 206a and the second sub-vortex 206b converge in the middle of the two vortex generating devices 200 to form the second airflow 2061 flowing upward along the height direction of the vehicle.

[0126] It should be noted that, in the first state, the first vortex 205 (including the first sub-vortex 205a and the second sub-vortex 205b) as a whole is relative to the second vortex 206 (including the second sub-vortex 206a and the second sub-vortex 206b) in the second state. The first vortex 205 as a whole presents an "inward" rotation trend, that is, the rotation directions of the first sub-vortex 205a and the first sub-vortex 205b cooperate, so that the rotation trajectory of the entire first vortex 205 is gathered toward the direction of the vehicle center axis. In the second state, the second vortex 206 generated by the same or related vortex generating device, which is composed of the second sub-vortex 206a and the second sub-vortex 206b, is completely different from the first vortex 205 in that the second vortex 206 presents an "outward" rotation state, that is, the rotation directions of the second sub-vortex 206a and the second sub-vortex 206b work together, so that the rotation trajectory of the entire second vortex 206 is diffused away from the direction of the vehicle center axis.

[0127] The second vortex 206 is generated in the same manner as the first vortex 205, which will not be described in detail in this application. For a vortex generating device 200, by changing the direction of the vortex generated by the vortex generating device 200, a second airflow 2061 opposite to the direction of the first airflow 2051 can be generated at the position where the first airflow 2051 is generated. The first airflow 2051 and the second airflow 2061 with different directions can have completely different effects on the operation requirements of the vehicle 100, providing diversified possibilities for performance optimization of the vehicle 100.

[0128] For example, the first airflow 2051 is directed toward Figure 6The second airflow 2061 blocks the gas flowing in the direction S2, disrupting its original flow path and changing the distribution of the airflow. Figure 6 The gas flowing in the S2 direction plays a driving role, causing its flow rate to increase and flow more smoothly.

[0129] On this basis, the vortex generating device 200 can meet the needs of the vehicle 100 in different driving processes. On the one hand, the first airflow 2051 generated by the first vortex 205 can more finely regulate the airflow distribution around the vehicle 100, especially in key areas such as the rear of the vehicle and under the chassis 104, reduce the generation of turbulence, reduce wind resistance, and improve the fuel economy of the vehicle 100; on the other hand, the second airflow 2061 generated by the second vortex 206 can enhance the stability of the vehicle 100 under conditions such as high-speed driving and cornering of the vehicle 100, optimize the adhesion between the tire and the ground, and ensure the safety and comfort of the driver and passengers.

[0130] In some embodiments, the air duct assembly 101 also includes an adjusting member, which is arranged at the air outlet end 1012, and the adjusting member is suitable for adjusting the air outlet direction of the air outlet end 1012 to further adjust the direction of the airflow generated by the airflow generating device, thereby better regulating the rear airflow of the vehicle 100.

[0131] It should be noted that the adjustment member can adjust the air outlet direction of the air outlet end 1012 left and right, and can also adjust the air outlet direction of the air outlet end 1012 up and down, and this application does not limit this.

[0132] In some embodiments, see Fig.11 The vortex generating device 200 includes a housing 201 and a plurality of blades 202. The plurality of blades 202 are disposed in the housing 201 and arranged along the circumference of the housing 201. The housing 201 plays the role of wrapping and fixing the blades 202, and also provides a certain space restriction for the flow of the internal airflow.

[0133] Exemplarily, the shell 201 may be a pipe of the air duct assembly 101 , and the shell 201 may also be a hollow shell disposed at the rear of the vehicle and connected to the air outlet end 1012 of the air duct assembly 101 , and this application does not make any limitation on this.

[0134] The vortex generating device 200 further includes a driving component, which is connected to the plurality of blades 202 , and is used to drive the plurality of blades 202 to rotate, so that the vortex generating device 200 switches between the first state and the second state.

[0135] It should be noted that, in order to ensure the stability of the first airflow 2051 or the second airflow 2061 , the rotation directions of the multiple blades 202 in the present application are the same.

[0136] On this basis, see Fig.11 Combined with Fig. 9 as well as Figure 5 As the driving component drives the blades 202 to rotate, the airflow will begin to form a first vortex 205 or a second vortex 206 under the limitation of the pipe-shaped shell 201, so that the vortex generating device 200 switches between the first state and the second state, and then use these vortices to affect the subsequent airflow direction of the entire air duct system and its effect on the external environment.

[0137] In some embodiments, see Fig.11 The driving component includes a rotating member 203 and a driving member 204. The plurality of blades 202 are all connected to the rotating member 203 in a transmission manner. The driving member 204 is used to drive the rotating member 203 to rotate, so as to drive the plurality of blades 202 to rotate synchronously.

[0138] It should be noted that the vortex device in the present application can be any device capable of generating vortexes, and the following embodiments in the present application do not constitute a limitation on the implementation methods in the present application.

[0139] For example, the driving member 204 may be a motor. The entire vortex generating device 200 can control the direction of the blades 202 of the vortex generating device 200 only by using a motor, and does not require additional energy driving, which has extremely high practicality.

[0140] When the driving member 204 drives the rotating member 203 to rotate, the rotating member 203 transmits power to the multiple blades 202, and the multiple blades 202 rotate in the same direction to form a first vortex 205 or a second vortex 206 to meet the needs of the vehicle 100 during driving, thereby ensuring the stability of the vehicle 100 during driving.

[0141] Of course, the driving assembly may also include a plurality of driving members 204, and the output end of a driving member 204 is connected to a blade 202 so that the blade 202 can rotate. This application is only an exemplary description, and under the influence of factors such as different requirements, cost budgets, technical levels, and application fields, those skilled in the art may use other technologies to drive the blade 202 to rotate to generate eddy currents, and this application does not limit this.

[0142] Exemplarily, the rotating member 203 and the plurality of blades 202 are connected via toothed transmission.

[0143] In some embodiments, see Fig.11The driving assembly further includes a first annular rack 2011 disposed on the housing 201, a second annular rack 2031 disposed on the rotating member 203, and a blade gear 2023 disposed on each blade 202, wherein the blade gear 2023 is meshed with the first annular rack 2011 and the second annular rack 2031 for transmission. The first annular rack 2011 is fixedly connected to the housing 201.

[0144] Among them, the blade 202 includes a connecting column 2022 and a blade 202 body, the connecting column 2022 is fixedly connected to the blade gear 2023 of each blade 202, and the connecting column 2022 and the blade gear 2023 of each blade 202 are rotationally connected to the shell 201, so that during the rotation of the second annular rack 2031, power can be transmitted to the blade gear 2023 arranged on each blade 202.

[0145] This application uses the driving member 204 as an example of a motor, and the output shaft of the motor is connected to a driving gear, which is the rotating member 203 in this application. When the motor is started, the output shaft of the motor drives the driving gear to rotate, and the driving gear meshes with the second annular rack 2031 for transmission, so that the second annular rack 2031 rotates.

[0146] The blade gear 2023 of each blade 202 is disposed between the first annular rack 2011 and the second annular rack 2031 , and is clamped by the first annular rack 2011 and the second annular rack 2031 , so that the blade gear 2023 of each blade 202 can rotate during the rotation of the second annular rack 2031 .

[0147] During the above transmission process, the first annular rack 2011 limits the displacement of the blade gear 2023 in a direction perpendicular to the plane of the first annular rack 2011, ensuring that the blade gear 2023 of each blade 202 is always accurately meshed between the first annular rack 2011 and the second annular rack 2031, maintaining the stability and accuracy of the transmission.

[0148] On the other hand, since the blade gear 2023 is also in a meshing state with the first annular rack 2011, in the process of the blade gear 2023 of each blade 202 following the revolution of the second annular rack 2031, the relative movement between the blade gear 2023 of each blade 202 and the first annular rack 2011 causes the blade gear 2023 of each blade 202 to rotate, thereby driving the connecting column 2022 to rotate, thereby driving the blade 202 body to rotate.

[0149] In the above process, when the vortex generated by the vortex generating device 200 needs to switch between the first vortex 205 and the second vortex 206, it is only necessary to change the rotation direction of the output shaft of the motor. In the present application, by simply adjusting the rotation direction of the output shaft of the motor, the power source, the state of the vortex generated by the entire vortex generating device 200 can be easily changed, and the switching from the first vortex 205 to the second vortex 206 or the second vortex 206 to the first vortex 205 can be achieved, so as to meet the differentiated needs for vortices in different vehicle 100 driving scenarios.

[0150] In some embodiments, see Figure 8 Combined with Fig. 9 The vehicle 100 in the present application further includes a first rear wheel 102 and a second rear wheel 103 ; along the length direction of the vehicle 100 , the vortex generating device 200 is located at the rear side of the first rear wheel 102 and / or the second rear wheel 103 .

[0151] The airflow generating device includes at least one vortex generating device 200; in a first state, the vortex generating device 200 is used to generate a first vortex 205 rotating around the length direction of the vehicle 100, a portion of the first vortex 205 is located at the rear side of the vehicle 100, and flows downward along the height direction of the vehicle 100, and a portion of the first vortex 205 located at the rear side of the vehicle 100 forms a first airflow 2051. Along the length direction of the vehicle 100, the vortex generating device 200 is located at the rear side of the first rear wheel 102 or the second rear wheel 103.

[0152] On this basis, during the driving process of the vehicle 100, turbulence is easily generated at the rear part of the vehicle. After the vortex generating device 200 generates the first vortex 205, the first airflow 2051 of the first vortex 205 flows downward along the height direction of the vehicle 100, which can meet the driving requirements of the vehicle 100 in a low wind resistance state. After the vortex generating device 200 generates the second vortex 206, the second airflow 2061 of the second vortex 206 flows upward along the height direction of the vehicle 100, which can meet the driving requirements of the vehicle 100 in the downforce mode. For the specific process, please refer to the previous description, and this application will not repeat it.

[0153] In some embodiments, see Figure 8 Combined with Fig. 9 There are two vortex generating devices 200, and the two vortex generating devices 200 are suitable for being respectively arranged at both ends of the width direction of the rear part of the vehicle 100. In the first state, the directions of the first vortices 205 generated by the two vortex generating devices 200 are opposite, so that the first airflows 2051 correspondingly generated by the two vortex generating devices 200 have the same direction when converging, and can jointly act on the airflow of the chassis 104 of the vehicle 100.

[0154] Along the length direction of the vehicle 100, one vortex generating device 200 is located at the rear side of the first rear wheel 102, and the other vortex generating device 200 is located at the rear side of the second rear wheel 103. The first rear wheel 102 and the second rear wheel 103 do not generate much airflow, that is, the vortex generating device 200 does not occupy the space where the first airflow 2051 plays a role, that is, it does not interfere with the specific space required for the first airflow 2051 to play a role. As a result, the first airflow 2051 generated by the vortex generating device 200 can better play a role in the gas flowing upward from the chassis 104 of the vehicle 100. This can enhance the stability of the vehicle 100 when driving at high speeds, reduce the drag coefficient, and bring a more excellent control experience to the driver.

[0155] In some embodiments, the present application also provides a control method, which can be used to control the above-mentioned vortex generating device 200 or vehicle 100.

[0156] Among them, the subject executing the method can be the vehicle 100 controller, or it can be various device modules in the vehicle 100 controller, such as an integrated circuit or a chip, and the embodiment of the present application does not make specific limitations on this.

[0157] See also Fig.16 In some embodiments, the control method in the present application includes:

[0158] S100, mode selection.

[0159] In some embodiments, the mode selection includes the vehicle satisfying a first preset condition or the vehicle satisfying a second preset condition.

[0160] S201 . When a first preset condition is met, control the airflow generating device to switch to a first state so that the airflow generating device generates a first airflow 2051 .

[0161] For example, the first preset condition may be to select the vehicle 100 to be in a low wind resistance state according to the driver's demand.

[0162] On this basis, the working state of the vortex generating device 200 in the present application can be adaptively changed according to the driver's choice, which can reduce fuel or battery power consumption, improve the economy of the vehicle 100, and allow the vehicle 100 to travel a longer distance with the same amount of fuel or power.

[0163] In some embodiments, the airflow generating device includes at least one vortex generating device 200;

[0164] Controlling the airflow generating device to switch to a first state includes:

[0165] At least one vortex generating device 200 is controlled to switch to the first state so that at least one vortex generating device 200 generates a first vortex 205 rotating around the length direction of the vehicle 100 , and the first airflow 2051 includes a portion of the first vortex 205 flowing downward along the height direction of the vehicle 100 .

[0166] As can be seen from the foregoing, under the action of the first airflow 2051, the airflow at the rear of the vehicle 100 can be converted into the driving force of the vehicle 100 itself, thereby reducing the wind resistance of the vehicle 100 during driving and improving the riding experience of the driver and passengers.

[0167] In some embodiments, see Fig.16 When the vortex generating device 200 in the present application includes a housing 201 and a plurality of blades 202 disposed in the housing 201, the plurality of blades 202 are arranged along the circumference of the housing 201. The control method of the present application controls at least one vortex generating device 200 to switch to the first state, including:

[0168] When the driving speed of the vehicle 100 is within a first preset range, the plurality of blades 202 are controlled to rotate by a first angle along a first direction relative to the axial direction of the housing 201;

[0169] When the driving speed of the vehicle 100 is within a second preset range, the plurality of blades 202 are controlled to rotate by a second angle along the first direction relative to the axial direction of the housing 201;

[0170] The maximum value in the first preset range is smaller than the minimum value in the second preset range, and the first angle is smaller than the second angle.

[0171] For the sake of convenience, the present application provides an exemplary description of the first preset range, the second preset range, the first angle and the second angle, but does not constitute a limitation on the present application. The first preset range is greater than or equal to 0 km / h and less than or equal to 80 km / h; the second preset range is greater than 80 km / h and less than or equal to 120 km / h. The first angle is 15° and the second angle is 30°.

[0172] The second angle may be an angle at which the blade 202 continues to rotate based on the first angle, or may be an angle at which the blade 202 rotates based on the initial position.

[0173] When the driving speed of the vehicle 100 is within the first preset range, i.e., greater than or equal to 0 km / h and less than or equal to 80 km / h, which is a low-speed section commonly seen in daily driving, the vehicle 100 control system will give precise instructions to control the plurality of blades 202 to rotate by a first angle of 15° along a first direction relative to the axial direction of the housing 201. At this time, the chassis 104 and the tail airflow of the vehicle 100 are preliminarily combed by using the relatively gentle airflow force, thereby reducing the wind resistance that still exists due to low-speed driving, and at the same time, unnecessary energy consumption will not be increased due to excessive disturbance of the airflow.

[0174] When entering the second preset range, the vehicle 100 travels at a medium-to-high speed range of greater than 80 km / h and less than or equal to 120 km / h. The system quickly switches the control mode to rotate the blade 202 to a second angle of 30° along the first direction relative to the axial direction of the shell 201. Regardless of whether the second angle continues to rotate based on the first angle or rotates directly from the initial position to this point, the blade 202 can strengthen the vortex generated in the air duct corresponding to the air duct assembly 101. In other words, in the first state, after the blade 202 rotates to a second angle of 30° along the first direction relative to the axial direction of the shell 201, the generated first airflow 2051 can further reduce the wind resistance encountered by the vehicle 100 during driving.

[0175] See also Fig.12 as well as Fig.13 , Fig.12 as well as Fig.13 Schematic diagrams of the blade 202 at different viewing angles when the blade 202 is in the initial position (ie, the blade extends along the axis of the shell 201 ), at which time the gas generating device is not working.

[0176] See also Fig.14 as well as Fig.15 , Fig.12 as well as Fig.13 Schematic diagrams at different viewing angles after the blade 202 rotates. At this time, the gas generating device generates vortex by controlling the rotation of the blade 202.

[0177] In some embodiments, see Fig.16 , controlling at least one vortex generating device 200 to switch to the first state further includes:

[0178] When the driving speed of the vehicle 100 is within a fifth preset range, the plurality of blades 202 are controlled to rotate by a fifth angle along the first direction relative to the axial direction of the housing 201 .

[0179] The maximum value in the second preset range is smaller than the minimum value in the fifth preset range, and the second angle is smaller than the fifth angle.

[0180] Exemplarily, the fifth preset range is greater than 120 km / h, and the fifth angle is 45 degrees.

[0181] Based on this, the present application can further enhance the vortex effect generated by the vortex generating device 200 when the vehicle 100 is traveling at a high speed.

[0182] In some embodiments, see Fig.16 , the control method further includes:

[0183] S202 . When a second preset condition is met, the airflow generating device is controlled to switch to a second state so that the airflow generating device generates a second airflow 2061 .

[0184] On this basis, the present application can further flexibly control the working state of the airflow generating device according to the needs of the vehicle 100.

[0185] In some embodiments, controlling the airflow generating device to switch to the second state in the control method of the present application includes:

[0186] Control at least one vortex generating device 200 to switch to the second state so that at least one vortex generating device 200 generates a second vortex 206 rotating around the length direction of the vehicle 100, and the second airflow 2061 includes a portion of the second vortex 206 flowing upward along the height direction of the vehicle 100 to increase the downforce of the vehicle 100.

[0187] In some embodiments, see Fig.16 , the control method of the present application for controlling the airflow generating device to switch to the second state includes:

[0188] When the driving speed of the vehicle 100 is within a third preset range, the plurality of blades 202 are controlled to rotate by a third angle along the second direction relative to the axial direction of the housing 201;

[0189] When the driving speed of the vehicle 100 is within a fourth preset range, the plurality of blades 202 are controlled to rotate by a fourth angle along the second direction relative to the axial direction of the housing 201;

[0190] The first direction is opposite to the second direction, the maximum value in the third preset range is smaller than the minimum value in the fourth preset range, and the third angle is smaller than the fourth angle.

[0191] For ease of explanation, the present application exemplifies that the third preset range is the same as the first preset range, and the fourth preset range is the same as the second preset range. Of course, the third preset range and the first preset range, and the fourth preset range and the second preset range may also be different, and the present application does not limit this.

[0192] Based on this, the present application can achieve flexible adjustment of the airflow generating device in the second state, enhance the handling performance of the vehicle 100 under various working conditions, and further improve the overall performance of the vehicle 100 and the driving experience of the driver and passengers.

[0193] In some embodiments, see Fig.16 , controlling at least one vortex generating device 200 to switch to the second state further includes:

[0194] When the driving speed of the vehicle 100 is within a sixth preset range, the plurality of blades 202 are controlled to rotate by a sixth angle along the second direction relative to the axial direction of the housing 201 .

[0195] The maximum value within the fourth preset range is smaller than the minimum value within the sixth preset range, and the fourth angle is smaller than the sixth angle.

[0196] Correspondingly, the sixth preset range and the fourth angle may be consistent with the fifth preset range and the fifth angle.

[0197] In some embodiments, the airflow generating device or the vehicle 100 further includes an input device, and controlling the airflow generating device to switch to the first state or the second state includes:

[0198] When receiving an input signal from the input device, the plurality of blades 202 are controlled to rotate relative to the axial direction of the housing 201 to an angle corresponding to the input signal, so as to adjust the tail airflow of the vehicle 100 .

[0199] Exemplarily, the input device may be a human-computer interaction device, such as a vehicle-mounted display screen.

[0200] Based on this, the driver and passengers can choose whether the airflow generating device is in the first state or the second state on the vehicle display screen to meet the different riding needs of the driver and passengers.

[0201] Furthermore, the vehicle 100 in the present application further includes a vehicle-mounted sensor. In any of the above-mentioned achievable implementations, the vehicle-mounted sensor can transmit the sensed vehicle speed to the controller, and the controller determines the range of the vehicle speed to adjust the rotation angle of the blade 202 .

[0202] The driver and passengers can manually control the working mode of the airflow generating device, or the controller can control the working mode of the airflow generating device based on the vehicle speed sensed by the vehicle-mounted sensor. The present application can provide both manual and automatic modes for the driver and passengers to choose.

[0203] In addition, it should be noted that in order to ensure the stability of the vehicle 100, the present application also includes a protection mode. When the driving speed of the vehicle 100 is greater than 270 km / h, the manual mode in the present application cannot be turned on to avoid potential risks caused by human misoperation or improper manipulation, thereby ensuring the safety of the vehicle 100.

[0204] In some embodiments, the present application further includes a controller for controlling any of the airflow generating devices or vehicles mentioned above. The controller is configured to:

[0205] When the first preset condition is met, the controller controls the airflow generating device to switch to the first state so that the airflow generating device generates a first airflow;

[0206] When the second preset condition is met, the controller controls the airflow generating device to switch to the second state, so that the airflow generating device generates a second airflow.

[0207] Based on this, the present application realizes automatic control of the airflow generating device. In addition, the controller can also be configured to control the airflow generating device or the vehicle to perform any step in the above control method.

[0208] In some embodiments, the present application provides a computer device, which includes a memory and a processor. The memory and the processor are communicatively connected to each other. Computer instructions are stored in the memory. The processor executes the above-mentioned control method by executing the computer instructions.

[0209] The processor may be a central processing unit, a network processor or a combination thereof. The processor may further include a hardware chip. The hardware chip may be a dedicated integrated circuit, a programmable logic device or a combination thereof. The programmable logic device may be a complex programmable logic device, a field programmable gate array, a general purpose array logic or any combination thereof.

[0210] The memory stores instructions executable by at least one processor, so that the at least one processor executes the method shown in the above embodiment.

[0211] The memory may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function; the data storage area may store data created according to the use of the computer device, etc. In addition, the memory may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some optional embodiments, the memory may optionally include a memory remotely arranged relative to the processor, and these remote memories may be connected to the computer device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0212] The memory may include volatile memory, such as random access memory; the memory may also include non-volatile memory, such as flash memory, hard disk or solid state drive; the memory may also include a combination of the above types of memory.

[0213] In some embodiments, the present application further provides a computer-readable storage medium, on which computer instructions are stored, and the computer instructions are used to enable a computer to execute the above-mentioned control method.

[0214] The above-mentioned method according to the embodiment of the present invention can be implemented in hardware, firmware, or can be implemented as a computer code that can be recorded in a storage medium, or can be implemented as a computer code that is originally stored in a remote storage medium or a non-temporary machine-readable storage medium and will be stored in a local storage medium and downloaded through a network, so that the method described herein can be stored in such software processing on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. Among them, the storage medium can be a magnetic disk, an optical disk, a read-only storage memory, a random access memory, a flash memory, a hard disk or a solid-state hard disk, etc.; further, the storage medium can also include a combination of the above-mentioned types of memory. It can be understood that a computer, a processor, a microprocessor controller or programmable hardware includes a storage component that can store or receive software or computer code. When the software or computer code is accessed and executed by a computer, a processor or hardware, the method shown in the above embodiment is implemented.

[0215] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An airflow generating device, applied to a vehicle (100), characterized in that: The airflow generating device is suitable for being arranged on the vehicle (100), and the airflow generating device can generate a first airflow (2051) or a second airflow (2061), wherein the first airflow (2051) is used to reduce the resistance experienced by the vehicle (100), and the second airflow (2061) is used to increase the downforce of the vehicle (100).

2. The airflow generating device according to claim 1, characterized in that: The airflow generating device comprises at least one vortex generating device (200), and the first airflow (2051) or the second airflow (2061) comprises a portion of the vortex generated by the at least one vortex generating device (200).

3. The airflow generating device according to claim 2, characterized in that: The vortex generating device (200) has a first state. In the first state, the vortex generating device (200) is suitable for generating a first vortex (205) rotating around the length direction of the vehicle (100), and the first airflow (2051) includes a portion of the first vortex (205) flowing downward along the height direction of the vehicle (100).

4. The airflow generating device according to claim 2, characterized in that: The vortex generating device (200) has a second state. In the second state, the vortex generating device (200) generates a second vortex (206) rotating around the length direction of the vehicle (100), and the second airflow (2061) includes a portion of the second vortex (206) flowing upward along the height direction of the vehicle (100).

5. The airflow generating device according to any one of claims 1 to 4, characterized in that: The vortex generating device (200) comprises: Housing (201); A plurality of blades (202) are disposed in the shell (201) and arranged along the circumference of the shell (201).

6. The airflow generating device according to claim 5, characterized in that: The vortex generating device (200) further comprises: A drive assembly is connected to the plurality of blades (202), and the drive assembly is used to drive the plurality of blades (202) to rotate so as to switch the vortex generating device (200) between a first state and a second state.

7. The airflow generating device according to claim 6, characterized in that: The driving assembly comprises a rotating member (203) and a driving member (204), the plurality of blades (202) are all in transmission connection with the rotating member (203), and the driving member (204) is used to drive the rotating member (203) to rotate, thereby driving the plurality of blades (202) to rotate synchronously.

8. The airflow generating device according to claim 7, characterized in that: The driving assembly further comprises a first annular rack (2011) provided on the housing (201), a second annular rack (2031) provided on the rotating member (203), and a blade gear (2021) provided on each blade (202); the blade gear (2021) is meshed with the first annular rack (2011) and the second annular rack (2031) for transmission.

9. A vehicle (100), characterized in that: include: At least one airflow generating device according to any one of claims 1 to 8.

10. The vehicle (100) according to claim 9, characterized in that The airflow generating device comprises two vortex generating devices (200), and the two vortex generating devices (200) are suitable for being arranged at the rear of the vehicle (100), and are respectively arranged at two ends of the rear of the vehicle (100) along the vehicle width direction; In a first state, the vortex generating device (200) is suitable for generating a first vortex (205) rotating around the length direction of the vehicle (100), and the first airflow (2051) includes a portion of the first vortex (205) flowing downward along the height direction of the vehicle (100); In the second state, the vortex generating device (200) generates a second vortex (206) rotating around the length direction of the vehicle (100), and the second airflow (2061) includes a portion of the second vortex (206) flowing upward along the height direction of the vehicle (100).

11. The vehicle (100) according to claim 10, characterized in that In the first state, the first vortex (205) comprises first sub-vortices generated by both of the two vortex generating devices (200), and the first sub-vortices generated by the two vortex generating devices (200) have opposite rotation directions.

12. The vehicle (100) according to claim 11, characterized in that Within the viewing angle from the rear of the vehicle (100) to the head of the vehicle (100), along the width direction of the vehicle (100), in the first state, the first sub-vortex generated by the vortex generating device (200) located on the left side of the two vortex generating devices (200) rotates in a clockwise direction.

13. The vehicle (100) according to claim 10, characterized in that In the second state, the second vortex (206) comprises second sub-vortices generated by both of the two vortex generating devices (200), and the second sub-vortices generated by the two vortex generating devices (200) rotate in opposite directions.

14. The vehicle (100) according to claim 13, characterized in that Within the viewing angle from the rear of the vehicle (100) to the head of the vehicle (100), along the width direction of the vehicle (100), in the second state, the second sub-vortex generated by the vortex generating device (200) located on the left of the two vortex generating devices (200) rotates in a counterclockwise direction.

15. The vehicle (100) according to claim 9, characterized in that Also includes: An air duct component (101), the air duct component (101) extending along the length direction of the vehicle (100), and a side of the air duct component (101) facing the front end of the vehicle (100) forms an air inlet end (1011), and an end facing the rear side of the vehicle (100) forms an air outlet end (1012), and the airflow generating device is arranged at the air outlet end (1012) of the air duct component (101).

16. The vehicle (100) according to claim 15, characterized in that The air duct assembly (101) further comprises: An adjusting member, wherein the adjusting member is arranged at the air outlet end (1012), and the adjusting member is suitable for adjusting the air outlet direction of the air outlet end (1012).

17. The vehicle (100) according to claim 9, characterized in that The vehicle also includes a first rear wheel (102) and a second rear wheel (103); along the length direction of the vehicle (100), the vortex generating device (200) is located at the rear side of the first rear wheel (102) and / or the second rear wheel (103).

18. A control method, characterized in that: Used to control the airflow generating device according to any one of claims 1 to 8 or the vehicle (100) according to any one of claims 9 to 17, the control method comprising: When a first preset condition is met, the airflow generating device is controlled to switch to a first state so that the airflow generating device generates the first airflow (2051).

19. The control method according to claim 18, characterized in that: The airflow generating device comprises at least one vortex generating device (200); Controlling the airflow generating device to switch to a first state includes: The at least one vortex generating device (200) is controlled to switch to the first state so that the at least one vortex generating device (200) generates a first vortex (205) rotating around the length direction of the vehicle (100), and the first airflow (2051) includes a portion of the first vortex (205) flowing downward along the height direction of the vehicle (100).

20. The control method according to claim 19, characterized in that: The vortex generating device (200) comprises a housing (201) and a plurality of blades (202) arranged in the housing (201), wherein the plurality of blades (202) are arranged along the circumference of the housing (201); The controlling the at least one vortex generating device (200) to switch to the first state comprises: When the travel speed of the vehicle (100) is within a first preset range, controlling the plurality of blades (202) to rotate by a first angle in a first direction relative to the axial direction of the housing (201); When the travel speed of the vehicle (100) is within a second preset range, controlling the plurality of blades (202) to rotate by a second angle along the first direction relative to the axial direction of the housing (201); The maximum value in the first preset range is smaller than the minimum value in the second preset range, and the first angle is smaller than the second angle.

21. The control method according to claim 20, characterized in that: The control method further comprises: When the second preset condition is met, the airflow generating device is controlled to switch to a second state so that the airflow generating device generates the second airflow (2061).

22. The control method according to claim 21, characterized in that: Controlling the airflow generating device to switch to the second state includes: The at least one vortex generating device (200) is controlled to switch to a second state so that the at least one vortex generating device (200) generates a second vortex (206) rotating around the length direction of the vehicle (100), and the second airflow (2061) includes a portion of the second vortex (206) flowing upward along the height direction of the vehicle (100).

23. The control method according to claim 21, characterized in that: Controlling the airflow generating device to switch to the second state includes: When the travel speed of the vehicle (100) is within a third preset range, controlling the plurality of blades (202) to rotate by a third angle in a second direction relative to the axial direction of the housing (201); When the travel speed of the vehicle (100) is within a fourth preset range, controlling the plurality of blades (202) to rotate by a fourth angle along the second direction relative to the axial direction of the housing (201); The first direction is opposite to the second direction, the maximum value in the third preset range is smaller than the minimum value in the fourth preset range, and the third angle is smaller than the fourth angle.

24. The control method according to claim 23, characterized in that: The airflow generating device or the vehicle (100) further comprises an input device, and the controlling the airflow generating device to switch to the first state or the second state comprises: When an input signal is received from the input device, the plurality of blades (202) are controlled to rotate axially relative to the housing (201) to an angle corresponding to the input signal.

25. A controller, characterized in that: For controlling the airflow generating device according to any one of claims 1 to 8 or the vehicle (100) according to any one of claims 9 to 17, the controller is configured as follows: When a first preset condition is met, controlling the airflow generating device to switch to a first state so that the airflow generating device generates the first airflow (2051); When the second preset condition is met, the airflow generating device is controlled to switch to a second state so that the airflow generating device generates the second airflow (2061).

26. A computer device, characterized in that: include: A memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the control method described in any one of claims 18 to 24 by executing the computer instructions.

27. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a computer to execute the control method described in any one of claims 18-24.

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