Control method of vehicle spraying system and vehicle spraying system

Abstract

The invention discloses a control method of a vehicle spraying system and the vehicle spraying system.The vehicle spraying system comprises a spraying assembly and a vehicle body part located above a hub of a vehicle, the vehicle body part is provided with a through hole, and the spraying assembly comprises a first nozzle and a second nozzle which are different in spraying kinetic energy; the first nozzle and the second nozzle are used for spraying mist in the spraying assembly out of the through hole in the direction from the inner surface of the vehicle body part to the outer surface of the vehicle body part, the control method comprises the steps that a target scene where the vehicle is located is obtained, and the target scene is one of a welcome scene, a night driving scene and a rapid acceleration scene; a corresponding target nozzle is determined based on the target scene, the target nozzle is controlled to spray, and the target nozzle comprises at least one of the first nozzle and the second nozzle. According to the technical scheme, the driving safety of the vehicle in a specific environment can be improved, and the function of auxiliary heat dissipation of the vehicle is achieved.

Description

Technical Field

[0001] This application relates to the fields of automotive aerodynamics and human-vehicle interaction technology, specifically to a control method for a vehicle spray system and a vehicle spray system. Background Technology

[0002] Existing vehicle exterior components are highly functionally limited, generally serving only static roles such as covering, protection, and decoration. However, they lack aerodynamic adjustment capabilities, thermal management response capabilities, and human-vehicle interaction capabilities. For example, traditional front fenders cannot actively guide the expulsion of hot air from the tire cavity during long downhill driving, leading to a continuous increase in brake disc temperature and a decrease in the coefficient of friction. In nighttime or low-visibility environments, it is difficult to recognize the vehicle's lateral contours, making it difficult for other road users to accurately predict the vehicle's width and movement trend. At the same time, there is a lack of lifelike biomimetic feedback mechanisms between users and vehicles. In scenarios such as greetings and acceleration, only flashing lights or horn prompts are used, resulting in a mechanical and cold interaction that fails to establish an emotional connection. Summary of the Invention

[0003] In view of the above problems, this application provides a control method for a vehicle spray system and a vehicle spray system, which can improve the driving safety of the vehicle in a specific environment and play a role in assisting the vehicle's heat dissipation.

[0004] According to one aspect of the embodiments of this application, a control method for a vehicle spraying system is provided. The vehicle spraying system includes a spraying assembly and a body portion located above the wheel hub of the vehicle. The body portion has a through hole. The spraying assembly includes a first nozzle and a second nozzle for spraying mist from the inner surface of the body portion toward the outer surface to the outside of the through hole. The spraying kinetic energy of the first nozzle and the spraying kinetic energy of the second nozzle are different. The control method includes: acquiring a target scene where the vehicle is located, the target scene being one of three scenes: a welcoming scene, a night driving scene, and a rapid acceleration scene; determining a corresponding target nozzle based on the target scene, and controlling the target nozzle to spray, the target nozzle including at least one of the first nozzle and the second nozzle.

[0005] In an optional exemplary embodiment, the vehicle further includes a guide vane for guiding the mist ejected by the first nozzle and the second nozzle. The control method further includes: obtaining a preset rotation angle value of the guide vane relative to the vehicle body in the target scenario; and controlling the guide vane to rotate to the preset rotation angle value.

[0006] In an optional exemplary embodiment, the control method further includes: if there are multiple preset rotation angle values, obtaining a preset sorting strategy for each preset rotation angle value; and controlling the guide vane to rotate sequentially to each preset rotation angle value based on the preset sorting strategy.

[0007] In an optional exemplary embodiment, the control method further includes: obtaining a preset rotation speed value of the guide vane rotating to the preset rotation angle value under the target scenario; and controlling the guide vane to rotate to the preset rotation angle value based on the preset rotation speed value.

[0008] In an optional exemplary embodiment, the control method further includes: obtaining a preset duration for which the guide vane is located at the preset rotation angle value in the target scenario; and controlling the guide vane to pause based on the preset duration.

[0009] In an optional exemplary embodiment, the vehicle further includes a light source for illuminating the mist ejected by the target nozzle and capable of emitting light of different colors. The control method further includes: acquiring a preset light emission mode of the light source in the target scene, the preset light emission mode including at least a monochromatic light mode and a multicolor light mode with different emission colors; and controlling the light source to emit light based on the preset light emission mode.

[0010] According to another aspect of the embodiments of this application, a vehicle spraying system is provided, comprising a vehicle body portion located above a wheel hub and having a through hole; a spraying assembly including an atomizing mechanism and a nozzle assembly, the atomizing mechanism being located on the inner surface of the vehicle body portion and used to atomize liquid; the nozzle assembly including a first nozzle and a second nozzle, both the first nozzle and the second nozzle being installed within the through hole, both the first nozzle and the second nozzle being connected to the atomizing mechanism and used to spray the mist output by the atomizing mechanism from the inner surface of the vehicle body portion toward the outer surface of the vehicle body portion; wherein the spray kinetic energy of the first nozzle is greater than the spray kinetic energy of the second nozzle.

[0011] In an optional exemplary embodiment, the vehicle spray system further includes a guide vane installed within the through hole; the guide vane includes a hinged end and a movable end disposed along the vehicle wheelbase direction, the hinged end being hinged to the vehicle body, and the movable end having a locked state and an unlocked state; wherein, when the movable end is in the unlocked state, the movable end can rotate relative to the vehicle body to open the through hole; when the movable end is in the locked state, the movable end covers the through hole.

[0012] In one optional exemplary embodiment, the vehicle spray system further includes a light source mounted within the through-hole.

[0013] In one optional exemplary embodiment, the vehicle body includes a hood or a front fender; the through hole is provided in the hood or the front fender.

[0014] In this application, the control method of the vehicle spray system sets up a first nozzle and a second nozzle with different spray kinetic energies, and determines the corresponding target nozzle based on the target scenario (for example, in a welcoming scenario, a gentle low-energy spray can be selected to create a warm atmosphere, while in a rapid acceleration scenario, a high-energy spray can be activated to create a strong visual impact). This allows the vehicle spray system to select the appropriate spray mode according to the needs of different scenarios. Ultimately, this not only improves the vehicle's driving safety in specific environments (such as low-visibility scenarios like night driving, where the fog can form an effective lateral visual marker), but also provides auxiliary cooling for the vehicle (for example, in a rapid acceleration scenario, activating the spray can provide auxiliary cooling for the wheel hub and surrounding areas). Furthermore, it provides differentiated and layered visual feedback to enhance the user's driving experience.

[0015] The above description is merely an overview of the technical solutions of the embodiments of this application. In order to better understand the technical means of the embodiments of this application and to implement them in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the embodiments of this application more obvious and understandable, specific implementation methods of this application are described below. Attached Figure Description

[0016] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 A schematic diagram of a scenario where the vehicle spray system provided in this application is spraying is shown.

[0017] Figure 2 A top view of the vehicle spray system provided in this application is shown.

[0018] Figure 3 A bottom view of the vehicle spray system provided in this application is shown.

[0019] Figure 4 A partially enlarged structural schematic diagram of the vehicle spray system provided in this application is shown.

[0020] Figure 5 A schematic diagram of the structure of the spray assembly of the vehicle spray system provided in this application is shown.

[0021] Figure 6 This application shows Figure 5 A structural schematic diagram of the spray assembly of the provided vehicle spray system from another perspective.

[0022] Figure 7 This application shows Figure 5 Another structural schematic diagram of the spray assembly of the provided vehicle spray system.

[0023] Figure 8 A flowchart of steps S110-S120 of the control method for the vehicle spray system provided in this application is shown.

[0024] Icon labels: 10. Body section; 21. Atomizing mechanism; 22. Nozzle assembly; 221. First nozzle; 222. Second nozzle; 23. Guide vane; 24. Light source; 25. Liquid storage tank; 101. Through hole; 102. Mist. Detailed Implementation

[0025] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0026] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices.

[0027] The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all content and operations / steps, nor do they necessarily have to be performed in the described order. For example, some operations / steps can be broken down, while others can be combined or partially combined; therefore, the actual execution order may change depending on the specific circumstances.

[0028] In this application, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0029] Existing vehicle exterior systems are generally static structures, lacking dynamic responsiveness and contextualized interactive functions. In typical human-vehicle interactions or special driving conditions such as welcoming guests, nighttime driving, and rapid acceleration, vehicles cannot actively output meaningful external signals, making it difficult to establish an emotional connection with the user or improve driving safety or thermal management efficiency. For example, traditional welcoming systems rely solely on lights or pop-out door handles, lacking dynamic spatial atmosphere creation; during nighttime driving, the wheel arch area lacks effective contour enhancement, making it easy for other road users to misjudge the vehicle's width and dynamic posture; during rapid acceleration, the heat dissipation demand in the tire and brake disc areas increases sharply, but existing front fender structures cannot actively guide cooling airflow.

[0030] Based on this, combined Figures 1 to 8 As shown, this embodiment provides a control method for a vehicle spraying system. The vehicle spraying system includes a spraying assembly and a body part 10 located above the wheel hub of the vehicle. The body part 10 is provided with a through hole 101. The spraying assembly includes an atomizing mechanism 21 (such as a piezoelectric ceramic atomizing plate or a centrifugal atomizing rotor) and a nozzle assembly 22 in fluid communication with it. The nozzle assembly 22 includes a first nozzle 121 and a second nozzle 122 for spraying mist from the inner surface of the body part 10 toward the outer surface to the outside of the through hole 101. The spray kinetic energy of the first nozzle 121 is different from that of the second nozzle 122.

[0031] It should be understood that the vehicle spray system refers to a modular atomizing actuator integrated into the body section 10 above the wheel hub, such as the front fender or hood of the vehicle.

[0032] In this embodiment, the spray assembly is arranged in the inner space of the vehicle body 10, and the inside and outside are connected through the through hole 101.

[0033] It should be understood that the body section 10 located above the wheel hub of the vehicle specifically refers to any sheet metal / composite material component covering the upper half of the tire in the front fender (including the left front fender and the right front fender) or hood, which can both avoid direct splashing of mud and water and allow the spray to naturally diffuse under the disturbance of airflow to form a visible fog curtain.

[0034] In this embodiment, the through hole 101 is a circular, elliptical or polygonal opening that penetrates the thickness direction of the body part 10, and the edge is provided with a chamfer or rubber sealing ring to take into account both air tightness and movement clearance.

[0035] It should be understood that the difference in spray kinetic energy between the first nozzle 221 and the second nozzle 222 means that, under the same liquid supply pressure and flow rate, the two nozzles have significant differences in initial velocity, momentum density and range of the outlet droplets due to differences in internal flow channel cross-section, nozzle cone angle, atomization chamber structure or pressurization method.

[0036] For example, the first nozzle 221 adopts a small-diameter straight cylindrical nozzle (0.3mm inner diameter), coupled with a 0.5-0.8MPa high-pressure unit, with a measured center range ≥1.2m and an average droplet size of 50-100μm, suitable for directional impact and long-distance visual enhancement; the second nozzle 222 adopts a fan-shaped diffusion micro-orifice array (6 orifices with a single orifice inner diameter of 0.15mm), with a working pressure of 0.2-0.4MPa, a center range ≤0.6m, and an average droplet size of 30-50μm, suitable for soft diffusion and near-field atmosphere rendering. The first nozzle 221 and the second nozzle 222 can be connected in parallel to the output end of the same atomizing mechanism 21, or they can be connected to independent micro-pump sets to achieve complete decoupled control of pressure and start / stop.

[0037] It should be understood that spraying from the inner surface of the vehicle body 10 towards the outer surface indicates that the spray path is unidirectional and penetrating, which avoids the accumulation and condensation of the mist 102 in the vehicle body interlayer. At the same time, the vehicle's airflow (especially at speeds above 30 km / h) is used to perform secondary shearing and stretching of the mist 102, enhancing visual extensibility and dynamic feel.

[0038] The control method for the vehicle spray system includes steps S110-S120, which are detailed below: Step S110: Obtain the target scene where the vehicle is located. The target scene is one of three scenes: welcoming scene, night driving scene, and rapid acceleration scene.

[0039] It should be understood that acquiring the target scene is a closed-loop perception process achieved through the fusion and identification of multiple onboard sensors.

[0040] For example, the trigger signal for the welcome scene comes from the keyless entry system antenna detecting electromagnetic field disturbance signals when a legitimate key enters within 3 meters of the vehicle body, or from the 360° surround view camera combined with the corresponding model to recognize preset gestures such as waving or standing, or from the remote activation command reported by the mobile APP via Bluetooth Low Energy beacon.

[0041] For example, the criteria for determining a nighttime driving scenario include an ambient light sensor output value that is consistently below 50 lux, a low beam headlight activation signal from the instrument cluster, and GPS location information indicating that the current time is between 30 minutes after sunset and 30 minutes before sunrise.

[0042] For example, in a rapid acceleration scenario, the wheel speed sensor detects that the difference in wheel speed between the front and rear axles exceeds 15% and the change rate of the accelerator pedal opening is greater than 80% / s. At the same time, the longitudinal acceleration sensor reading remains above 0.4g for more than 0.8s. The three factors combined are considered to establish the condition.

[0043] Step S120: Determine the corresponding target nozzle based on the target scene, and control the target nozzle to spray. The target nozzle includes at least one of the first nozzle 221 and the second nozzle 222.

[0044] In this embodiment, when the target scenario is determined to be a welcoming scenario, the vehicle spray system is controlled to call the "Welcoming Ceremony Mode" pre-installed in the vehicle spray system's strategy library, activating only the second nozzle 222 (low-pressure fine atomizing nozzle) to continuously spray for 3 seconds at a constant pressure of 0.25MPa and a steady flow rate of 80mL / min, forming a uniform thin mist layer on the outer surface of the vehicle body. When the target scenario is determined to be a rapid acceleration scenario, the "Performance Mode" is activated, and the first nozzle 221 (high-pressure directional spray nozzle) is simultaneously activated. The first nozzle 221 intermittently sprays at a pulse pressure of 0.65MPa (duty cycle 40%, frequency 5Hz) to form a high-speed mist beam penetrating the airflow, simulating the visual effect of a wake vortex. When the target scenario is determined to be a night driving scenario, the "Safety Mode" is entered, dynamically switching according to the real-time vehicle speed: when the vehicle speed is <40km / h, only the second nozzle 222 is activated to create a soft contour mist band; when the vehicle speed is ≥40km / h, the dual-nozzle collaborative mode is automatically switched to improve the reflectivity of the mist 102 to oncoming vehicles. Therefore, the control method of vehicle spray system can not only improve the driving safety of vehicle in specific environments and play a role in assisting vehicle heat dissipation (for example, in the case of rapid acceleration, the spray can be activated to assist heat dissipation of the wheel hub and surrounding area), but also provide differentiated and rich visual feedback to enhance the user's driving experience.

[0045] The vehicle also includes a guide vane 23, which is used to guide the mist 102 sprayed by the first nozzle 221 and the second nozzle 222.

[0046] In this embodiment, the guide vane 23 is a movable air guiding structure, installed inside the through hole 101 of the vehicle body 10 or nested around the periphery of the through hole 101. The guide vane 23 can be made of lightweight, high-rigidity composite material, such as carbon fiber reinforced polyamide or aluminum alloy, with a thickness of 1.2-2.5 mm. It is generally arc-shaped and thin, with its contour adapted to the cross-sectional shape of the through hole 101 (elliptical or rectangular, optional). Its length direction is arranged along the vehicle wheelbase direction to match the mainstream airflow direction.

[0047] Furthermore, one end of the guide vane 23 is driven by a miniature brushless DC motor (rated voltage 12V, stall torque ≥0.8N·m, positioning accuracy ±0.5°), and connected to the hinge shaft via a reduction gear set or harmonic transmission mechanism; the other end is a free movable end, which can rotate around the hinge shaft in the unlocked state, with a maximum theoretical rotation range of 0° (fully closed sealing through hole 101) to 90° (fully unfolded perpendicular to the outer surface of the vehicle body).

[0048] It should be understood that the guide vane 23, by changing the effective flow cross-section of the through hole 101 and the local flow field pressure gradient, regulates the trajectory, diffusion angle, and residence time of the mist 102 jointly ejected by the first nozzle 221 and the second nozzle 222, thereby affecting the morphological distribution of the mist 102 in the external space of the vehicle body. The guide vane 23 is used to guide the mist 102 ejected by the first nozzle 221 and the second nozzle 222, indicating that the guide vane 23 does not only act on the ambient airflow, but is specifically designed to coordinate the atomization output of the dual nozzles.

[0049] The control method for the vehicle spray system also includes obtaining a preset rotation angle value of the guide vane 23 relative to the vehicle body 10 in the target scenario.

[0050] In this embodiment, obtaining the preset rotation angle value of the guide vane 23 relative to the vehicle body 10 in the target scene means that the vehicle spray system retrieves angle parameters strictly bound to the scene from the local embedded memory based on the identified target scene type. This preset rotation angle value is not a fixed constant, but a three-dimensional mapping result: the horizontal axis represents the target scene category (welcoming / night driving / rapid acceleration), the vertical axis represents the vehicle's real-time status parameters (such as vehicle speed, ambient light, battery SOC), and the depth dimension represents the user preference configuration (such as setting "welcoming intensity" to high / medium / low).

[0051] For example, in a welcoming scenario, if the vehicle speed is 0 km / h and the ambient illuminance is >100 lux, the preset angle value is 70°; if the rain mode is detected to be activated in the same scenario, it will be automatically corrected to 60° to reduce the risk of fog 102 being washed away by rain; in a rapid acceleration scenario, if the vehicle speed accelerates from 0 to 60 km / h in ≤3.2s, the preset angle value is 75°; if the acceleration process is accompanied by a regenerative braking signal, it will be lowered to 68° to balance heat dissipation and energy efficiency.

[0052] Furthermore, the control method for the vehicle spray system also includes: controlling the guide vane 23 to rotate to a preset rotation angle value.

[0053] For example, controlling the guide vane 23 to rotate to the preset rotation angle value means that the control system outputs a PWM drive signal to the motor drive chip, and adjusts the motor torque and speed through current closed-loop feedback, so that the actual angle of the guide vane 23 approaches the target value at a controllable rate of ≤5° / 0.1s, and starts the position holding mode after reaching the target value (by sampling the angle signal in real time through a Hall sensor or potentiometer).

[0054] In this invention, during a welcoming scene, the guide vanes 23 open slowly to 70° in a breathing rhythm and close to 50°, working in conjunction with low-pressure nozzles to form a soft, full, and clearly defined vertical fog curtain. During rapid acceleration, the vanes instantly open to 75°, directing high-pressure nozzles (e.g., the first nozzle 221) to the area above and behind the tires, enhancing the visual impact and continuously guiding hot air from the tire cavity upwards along the guide channel in a fog-free state, improving the brake disc's heat dissipation efficiency. During nighttime driving, the vanes maintain a small opening of 25°, avoiding excessive airflow disturbance that increases wind resistance and providing appropriate constraint for the fog 102. Thus, the guide vanes 23 are no longer merely passive decorative parts or single-function components, but achieve anthropomorphic interaction, aerodynamic optimization, and enhanced thermal management, effectively solving the fundamental technical problem that it is difficult to achieve controllable flow direction, malleable shape, and scene-variable characteristics of the fog 102 using only the nozzles themselves.

[0055] Furthermore, the control method for the vehicle spray system also includes: if there are multiple preset rotation angle values, then obtain a preset sorting strategy for each preset rotation angle value, and control the guide vane 23 to rotate sequentially to each preset rotation angle value based on the preset sorting strategy.

[0056] It should be understood that multiple preset rotation angle values ​​refer to the fact that for the same target scenario (such as a welcoming scenario, a night driving scenario, or a rapid acceleration scenario), the vehicle spray system control system has pre-configured two or more discrete or continuous angle values.

[0057] For example, in a welcoming scenario, the angle values ​​are set to four stages: 0°→70°→50°→0°, or in a nighttime driving scenario, the angle values ​​are set to three independent angle values: 30°, 60°, and 45°.

[0058] It should be understood that the preset sorting strategy refers to the defined rules for executing the timing logic of multiple preset rotation angle values, including but not limited to: sequential execution (such as sorting by numerical ascending / descending order), cyclic execution (such as repeating 70°→50°→0°→70°), alternating execution (such as taking angle A for odd-numbered actions and angle B for even-numbered actions), event-triggered jump (such as skipping intermediate angles and directly entering the final state if a sudden change in vehicle speed is detected), time-driven segmentation (such as rotating to 70° in the 1st second, holding in the 2nd second, and rotating to 50° in the 3rd second), and conditional branch execution (such as enabling sequence A when the light intensity is <50 lux, otherwise enabling sequence B).

[0059] In this invention, after multiple preset rotation angle values ​​are set and have a clear sorting logic, not only is the technical problem of rigid interactive performance and lack of life rhythm caused by a single fixed angle solved, but also the instantaneous peak power demand of the motor is reduced by adjusting in stages, thereby reducing the power consumption of the whole machine in a single welcoming sequence.

[0060] Furthermore, the control method for the vehicle spray system also includes: obtaining a preset rotation speed value of the guide vane 23 rotating to a preset rotation angle value under the target scenario; and controlling the guide vane 23 to rotate to the preset rotation angle value based on the preset rotation speed value.

[0061] It should be understood that the preset rotational speed value refers to the angular velocity parameter of the guide vane 23 pre-configured for a specific target scenario. It characterizes the instantaneous angular velocity change law followed by the guide vane 23 as it rotates from the initial angle to the preset rotational angle value. This speed value is not a single constant value, but a set of speed curve data with a time dimension, stored in the controller Flash, including the initial acceleration, steady-state angular velocity range, final deceleration, and corresponding duration.

[0062] For example, in a welcoming scenario, the preset rotation speed value corresponds to an S-shaped speed change curve: the angular acceleration is +8° / s² within 0-0.3s, reaching a peak angular velocity of 12° / s and maintaining it for 0.4s, then... The speed deceleration from 10° / s² to 0 takes 1.1s, thus forming a breathing rhythm of slow start, steady movement, and gentle stop. In the case of rapid acceleration, the preset rotation speed value corresponds to a step response curve: the angular acceleration reaches +120° / s² within 0.05s, the full stroke rotation from 0° to 75° is completed within 0.15s, and the peak angular velocity is ≥65° / s, which meets the aerodynamic response time requirements.

[0063] In this invention, during the welcoming scene, the slow and smooth variable speed rotation gives the leaf-like organism a human-like breathing rhythm of "expansion-pause-slight contraction", significantly enhancing the emotional connection with the user; during the rapid acceleration scene, the high-speed transient response ensures that the airflow channel is constructed before the brake disc temperature rises to the critical point, improving the forced convection heat transfer efficiency in the tire area; during the night driving scene, the speed regulation logic is coupled with the vehicle speed, which avoids mechanical wear caused by frequent starts and stops, and maintains continuous airflow disturbance to suppress local condensation of fog 102, ensuring the stability of the optical path.

[0064] Furthermore, the control method for the vehicle spray system also includes: obtaining a preset duration for which the guide vane 23 is located at a preset rotation angle value in the target scenario; and controlling the guide vane 23 to pause based on the preset duration.

[0065] It should be understood that the preset duration is used to define the duration for which the guide vane 23 remains stationary after reaching the target angle. Its value is dynamically set according to the scenario: in the welcoming scenario, the preset duration is 1 second to simulate the physiological pause of the "staring" action; in the night driving scenario, the preset duration is 0.5 seconds to take into account both visual recognition and airflow stability; in the rapid acceleration scenario, the preset duration is 0.2 seconds to ensure a rapid response to subsequent dynamic adjustment needs.

[0066] In this invention, a controllable static maintenance phase is introduced after the guide vane 23 reaches the preset rotation angle value, giving the originally transient mechanical motion a clear time scale and behavioral rhythm, thereby solving the technical problems of the static front fender lacking a sense of life, the fragmented movement of existing dynamic components, and the difficulty for users to establish behavioral expectations and emotional feedback; therefore, in the welcoming scene, a human-like interactive link of "opening eyes - staring - responding" is successfully constructed, which improves the user's experience of vehicle response; in the night driving and rapid acceleration scene, the residence time of fog 102 in a specific airflow field and the light effect superposition window are optimized by controllable pauses, which significantly enhances the visual stability and recognizability of the fog curtain outline.

[0067] The vehicle also includes a light source 24, which is used to illuminate the mist 102 ejected from the target nozzle and can emit light of different colors.

[0068] In this embodiment, the vehicle's light source 24 refers to an independently controllable optical emission unit integrated inside the through hole 101 of the vehicle body 10 or in the mounting area adjacent to the nozzle assembly 22. The light source 24 does not rely on the vehicle's original lighting system (such as headlights or position lights) but is an interactive light source 24 specifically designed to enhance the visual performance of the spray. Its physical installation position is located on the outer edge of the nozzle assembly 22 or the inner side of the root of the guide vane 23 to ensure that the incident angle of the light covers the main diffusion path of the fog 102 and avoids being blocked by the vehicle body structure.

[0069] Optionally, the light source 24 may be a surface-mount (SMD) RGB three-chip LED, a Mini-LED array, or a laser-fluorescent hybrid light source 24.

[0070] It should be understood that the light source 24 is used to illuminate the mist 102 sprayed from the target nozzle in the following way: the light output axis of the light source 24 is arranged at an angle of 15°-75° with the center line of the mist 102 jet from the target nozzle, and is projected obliquely at 30°-45°, so that the light is scattered when it penetrates the mist 102, forming a visible beam, light curtain or contour halo; this arrangement is different from direct illumination (which is prone to glare) or backlighting (which results in low contrast of the mist 102), and takes into account both the visibility efficiency of the mist 102 and the comfort of the human eye.

[0071] Optionally, the light source 24 can also be configured with a microlens group to expand the point light source 24 into a strip or fan-shaped light spot to match the three-dimensional diffusion cloud shape formed by the fog 102 outside the through hole 101.

[0072] It should be understood that the ability of light source 24 to emit light of different colors means that light source 24 has dynamic color gamut control capability, and its emission spectrum covers the visible light band of 400nm-700nm; in addition to the basic red (R), green (G), and blue (B) three primary color combination, it also supports the output of warm white / cool white light with high color rendering index (Ra>90) by exciting phosphors with white LEDs, or adopts a four-channel (RGBW) architecture to add independent white light channels to improve the illumination uniformity of fog 102.

[0073] In another alternative embodiment, the light source 24 can be replaced with an OLED flexible light-emitting film, which is attached to the arc-shaped area of ​​the inner surface of the vehicle body 10 to achieve uniform diffusion of the surface light source 24, reduce the intensity of hot spots and enhance the edge softening effect of the fog 102.

[0074] The control method for the vehicle spray system also includes: acquiring a preset light emission mode of the light source 24 in the target scene, wherein the preset light emission mode includes at least a monochromatic light mode and a multicolor light mode with different emission colors; and controlling the light source 24 to emit light based on the preset light emission mode.

[0075] It should be understood that acquiring the preset illumination mode of light source 24 in the target scene refers to the control system retrieving the associated light effect configuration file from the local strategy library based on the target scene identifier (welcoming scene, night driving scene, or rapid acceleration scene) output by the scene recognition module. This light effect configuration file may contain parameter fields such as mode type identifier, color sequence, brightness time-series curve, flicker frequency, and gradient rate. The strategy library supports OTA remote updates, allowing automakers to dynamically issue differentiated light effect solutions based on vehicle model, user preferences, or regional regulations.

[0076] For example, in a welcoming scenario, the preset illumination mode corresponds to the "rainbow gradient" sub-mode, which is defined as a seven-color cycle (red → orange → yellow → green → blue → indigo → violet), with each color lasting for 0.3 seconds. The brightness increases from 300 cd / m² to 800 cd / m² according to a sine function and then falls back. In a night driving scenario, the "red outline light band" sub-mode is called, which outputs a fixed 625nm±5nm narrowband red light with a constant brightness of 650 cd / m² to enhance the recognition of the vehicle's lateral boundaries.

[0077] In this invention, the light source 24 is not an isolated decorative component, but rather a visual enhancement subsystem for the fog 102. Its spatial arrangement, spectral characteristics, dynamic modes, and closed-loop control are all systematically designed around the core objective of improving the visibility and expressiveness of the fog 102 in complex lighting environments.

[0078] It should be understood that, because the light source 24 illuminates the fog 102 at a specific angle, making the fog droplets secondary light sources, the outline of the fog 102 is significantly enhanced against a strong daylight background; and the light source 24 supports dynamic switching between monochrome and multicolor and is strictly bound to the target scene, so that the same hardware platform can present an artistic fog screen when welcoming guests, construct a high-contrast side light strip when driving at night, and simulate a motion trail with high-pressure spray when accelerating rapidly, thereby solving the technical problems of poor visibility, lack of color appeal, and difficulty in conveying emotional expression in simple sprays during the day or in strong light environments.

[0079] Therefore, without adding any additional mechanical structures, the accuracy of vehicle lateral recognition and the user experience can be improved simply by using light-fog coupling.

[0080] Combination Figures 1 to 7 As shown, this embodiment also provides a vehicle spraying system to implement the above-described vehicle spraying system control method.

[0081] It should be understood that there may be two sets of vehicle spray systems, symmetrically arranged on both sides of the vehicle along the wheel track direction. Both sets of spray systems may share a single atomizing mechanism 21 and a liquid reservoir 25. Correspondingly, the control method described above can simultaneously control both sets of vehicle spray systems, enabling them to operate synchronously.

[0082] Furthermore, the vehicle spray system includes a body section 10 located above the wheel hub of the vehicle, and the body section 10 is provided with a through hole 101.

[0083] In this embodiment, the body part 10 refers to the structural cover on the front or side of the vehicle located directly above the wheel hub.

[0084] For example, the body section 10 includes a hood, the upper edge area of ​​the front fender, or a wheel arch cover. Its material can be high-strength steel, aluminum alloy stampings, or carbon fiber composite materials. This part, in the overall vehicle aerodynamic model, is located at the intersection of the tire cavity hot air rising path and the lateral airflow, possessing natural potential for heat exchange and airflow guidance.

[0085] In other words, the through hole 101 is provided on the hood, the upper edge of the front fender, or the wheel arch cover.

[0086] In this embodiment, the through hole 101 is a circular, elliptical, or biomimetic contour-shaped opening that penetrates the body part 10, with a diameter ranging from Φ30 to Φ80 mm. The axis of the through hole 101 is perpendicular to the main surface of the body part 10, and the deviation between its geometric center line and the vertical projection of the wheel center does not exceed ±15 mm, so as to ensure that the spray direction of the mist 102 forms an effective angle with the tire rotation plane, which is conducive to the mist 102 spreading backward under the action of airflow rather than directly rolling back into the wheel cavity.

[0087] Furthermore, the vehicle spray system also includes a spray assembly, which includes an atomizing mechanism 21 and a nozzle assembly 22. The atomizing mechanism 21 is located on the inner surface of the vehicle body 10 and is used to atomize liquid. The nozzle assembly 22 includes a first nozzle 221 and a second nozzle 222. Both the first nozzle 221 and the second nozzle 222 are installed in the through hole 101. Both the first nozzle 221 and the second nozzle 222 are connected to the atomizing mechanism 21 and are used to spray the mist 102 output by the atomizing mechanism 21 from the inner surface of the vehicle body 10 toward the outer surface of the vehicle body 10. The spray kinetic energy of the first nozzle 221 is greater than that of the second nozzle 222.

[0088] In this embodiment, the atomizing mechanism 21 is located on one side of the inner surface of the vehicle body 10, maintaining a distance of 5-20mm from the through hole 101. The atomizing mechanism 21 includes a liquid storage chamber, a pressurizing pump, a pressure regulating valve, and an ultrasonic transducer or a vortex atomizing core. Its working pressure can be steplessly adjusted within the range of 0.2-0.8MPa, corresponding to a droplet particle size distribution of 30-100μm. The liquid storage chamber has a volume of 150-300mL and is connected to the vehicle windshield washer fluid reservoir 25 through a one-way valve, supporting compatibility with antifreeze additives. The pressurizing pump is driven by a brushless DC motor with a rated power of 3-6W and has overload protection and dry-burning self-stop function.

[0089] It should be understood that the liquid used by the atomizing mechanism 21 to atomize into mist 102 can be directly derived from the windshield washer fluid reservoir 25. In other words, the windshield washer fluid reservoir 25 can be connected to the atomizing mechanism 21 and thus be used by the atomizing mechanism 21.

[0090] In this embodiment, both the first nozzle 221 and the second nozzle 222 in the nozzle assembly 22 are made of stainless steel or ceramic and are embedded in the circumferential positioning groove inside the through hole 101. Their axes are parallel and coplanar, and both are deflected 5°-15° towards the normal of the outer surface of the vehicle body 10 to avoid rain and enhance the residence time of the mist 102 in the lateral airflow. The first nozzle 221 is a high-pressure directional type with a tapered-throat-expanding internal flow channel. With a nozzle diameter of 0.15-0.25mm and a cone angle of 30-45°, it achieves high kinetic energy and low diffusion angle spray (range ≥1.2m, mist cone angle ≤25°). The second nozzle 222 is a low-pressure fine type, using a micro-hole array or multi-stage swirling structure with a nozzle diameter of 0.08-0.12mm and a mist cone angle of 40°-60°, focusing on atomization uniformity and near-field diffusion effect (range 0.4-0.8m).

[0091] In this embodiment, the first nozzle 221 and the second nozzle 222 are connected to the atomizing mechanism 21 through independent solenoid valves, supporting three control modes: individual opening and closing, synchronous opening and closing, and pulse alternating spray. Their installation position can be replaced with a shared nozzle seat + switchable nozzle module structure, that is, the nozzle switcher is driven by a stepper motor to switch nozzles with different kinetic energy characteristics in the same installation position, realizing hardware reuse.

[0092] It should be understood that the spray kinetic energy of the first nozzle 221 is greater than that of the second nozzle 222. This difference in kinetic energy is reflected in the difference in kinetic energy density per unit mass of mist 102, and its numerical relationship is determined by the injection pressure, flow rate, and nozzle outlet velocity. Under the same liquid supply pressure, the first nozzle 221 has a larger flow channel contraction ratio and a higher outlet velocity, resulting in an average outlet velocity of 12-18 m / s, while the second nozzle 222 has a velocity of 6-9 m / s. Under the system calibration conditions (output pressure of atomizing mechanism 21 0.5 MPa), the spray kinetic energy of the first nozzle 221 is approximately 2.1-2.8 times that of the second nozzle 222. This kinetic energy gradient is not a fixed value and can be dynamically matched by adjusting the output pressure of atomizing mechanism 21.

[0093] For example, when the vehicle spray system needs to balance long-range wake simulation and near-field atmosphere creation, the pressure of the first nozzle 221 can be increased to 0.7MPa and the pressure of the second nozzle 222 can be maintained at 0.3MPa, thereby increasing the kinetic energy ratio to about 4.5 times. Conversely, when emphasizing a soft feel in a welcoming scene, the pressure is uniformly reduced to 0.25MPa and 0.2MPa, and the kinetic energy ratio is narrowed to about 1.6 times.

[0094] In this invention, a vehicle spray system with both passive ventilation and active atomization functions is constructed within a limited space above the wheel hub. When the vehicle is stationary in a welcoming state, the control system activates the second nozzle 222 to perform low-pressure fine spraying at 0.25 MPa. The mist 102 diffuses outward through the through-hole 101, forming a semi-transparent fog curtain under the influence of ambient light and lateral airflow, highlighting the vehicle body lines. At this time, the through-hole 101 itself also promotes natural convection of hot air within the tire cavity, assisting in cooling the brake disc. When the vehicle enters a rapid acceleration condition, the control system switches to the first nozzle 221, which sprays at high speed at 0.6 MPa. The mist 102 penetrates the boundary layer with a high initial velocity, is captured by the negative pressure area behind the vehicle body, and is stretched backward, forming a dynamic wake visual effect, enhancing the expression of acceleration intent. At the same time, the through-hole 101 continues to serve as an airflow channel, reducing the turbulence intensity in the tire area. Because the body part 10 is located above the wheel hub, the through hole 101 can avoid interference from the complex pipeline of the chassis and is in the airflow acceleration zone, ensuring the effective diffusion of the mist 102. Due to the design of the difference in kinetic energy between the first nozzle 221 and the second nozzle 222, the vehicle spray system can achieve graded control of spray distance, concentration and shape without the need to add an additional actuator.

[0095] The vehicle spray system also includes a guide vane 23, which is installed in the through hole 101. The guide vane 23 includes a hinged end and a movable end arranged along the vehicle wheelbase direction. The hinged end is hinged to the vehicle body 10, and the movable end has a locked state and an unlocked state. When the movable end is in the unlocked state, the movable end can rotate relative to the vehicle body 10 to open the through hole 101. When the movable end is in the locked state, the movable end covers the through hole 101.

[0096] In this embodiment, the guide vane 23 is installed in the through hole 101, which means that the guide vane 23 is integrally embedded in the through hole 101 provided in the body part 10. Its installation position is between the inner surface and the outer surface of the body part 10, and it is arranged along the axial direction of the through hole 101.

[0097] Furthermore, the guide vane 23 includes a hinged end and a movable end arranged along the vehicle wheelbase direction, which means that the guide vane 23 is a long strip-shaped thin plate structure, and its length direction is parallel to the vehicle front-rear direction (i.e., the wheelbase direction). The hinged end is located at one end of the vane and is rotatably connected to the hinge seat reserved in the body part 10 through a pin, a rotating shaft or a miniature bearing assembly. The movable end is the other end of the vane, which extends cantilevered to the opening area of ​​the through hole 101. Its contour shape is adapted to the cross section of the through hole 101 (when the through hole 101 is circular, the movable end has an arc segment contour; when the through hole 101 is rectangular or elliptical, the movable end is matched with a straight line segment or an elliptical arc segment). The edge of the movable end is provided with a flexible sealing lip (made of silicone rubber or TPV thermoplastic elastomer) to form a surface contact seal with the edge of the through hole 101 of the body part 10 in the locked state.

[0098] Optionally, the hinged end can also be set in the middle of the blade to form a double-arm symmetrical structure, with the two movable ends extending to both sides of the through hole 101, which is suitable for large-size through holes 101 or multi-zone spraying scenarios.

[0099] It should be understood that the articulation between the articulated end and the body section 10 refers to the constraint through the articulated structure, which achieves a deterministic rotational degree of freedom. The articulated structure includes, but is not limited to: pin-shoulder fit, miniature ball joint, torsion spring type elastic hinge or magnetic positioning hinge; an integrated articulated module with brushless motor direct drive and harmonic reducer with angle feedback is adopted, which not only meets the high-precision positioning (within ±0.5°), but also has a built-in Hall sensor to monitor the blade angle in real time; Furthermore, when the movable end is in the unlocked state, it can rotate relative to the vehicle body 10 to open the through hole 101. When the movable end is in the locked state, the movable end covering the through hole 101 means that the main body outline of the movable end completely covers the opening surface of the through hole 101 when it is locked.

[0100] In this invention, during the operation of the vehicle spray system, the guide vane 23 reliably switches between locked and unlocked states according to control commands. When unlocked, the movable end rotates around the hinged end to open the through hole 101, allowing the mist 102 sprayed by the first nozzle 221 and the second nozzle 222 to be guided to the outside of the vehicle as needed. When locked, the movable end tightly seals the through hole 101, restoring the integrity of the original sealing structure of the vehicle body 10. Therefore, under normal vehicle driving conditions (non-spraying conditions), it can effectively prevent rainwater, dust, gravel, and other external foreign objects from entering the wheel arch cavity through the through hole 101, avoiding contamination of the brake disc.

[0101] The vehicle spray system also includes a light source 24, which is installed in the through hole 101.

[0102] In this embodiment, light source 24 refers to a light-emitting device that can actively emit visible light.

[0103] Optionally, the light source 24 is a surface-mount LED (Light Emitting Diode) with integrated RGB three-chip; it can also be an OLED (Organic Light-Emitting Diode) flexible light strip or a micro laser diode array (LDArray) to meet differentiated needs such as high brightness, narrow beam angle or dynamic scanning.

[0104] For example, the operating voltage of the light source 24 is DC 12V, the rated power of a single unit is ≤0.8W, it supports PWM (Pulse Width Modulation) dimming and I²C bus protocol control, and has independent address encoding capability, which facilitates multi-point communication with the vehicle controller.

[0105] In this embodiment, the light source 24 can be arranged in a linear pattern along the circumference of the through hole 101, or it can be distributed in a dot matrix pattern at specific geometric points on the inner wall of the through hole 101 (such as the top center, symmetrical positions on the left and right sides).

[0106] In this invention, because the light source 24 illuminates the fog 102 at a specific angle, the fog droplets become secondary light emitters, significantly enhancing the outline recognition of the fog 102 against a strong daytime background; and the light source 24 supports dynamic switching between monochrome and multicolor and is strictly bound to the target scene, so that the same hardware platform can present an artistic fog screen when welcoming guests, construct a high-contrast side light strip when driving at night, and simulate a motion trail with high-pressure spray when accelerating rapidly, thereby solving the technical problems of poor visibility, lack of color appeal, and difficulty in conveying emotional expression in simple sprays during the day or in strong light environments.

[0107] In this application, unless otherwise expressly specified and limited, the terms "assembly," "connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0108] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. "A plurality of" means two or more, unless otherwise explicitly specified. The terms "some embodiments," "exemplarily," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application.

[0109] The illustrative expressions of the terms used above do not necessarily refer to the same embodiments or examples. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, those skilled in the art can combine and integrate the different embodiments or examples described herein, as well as the features of those different embodiments or examples, without contradiction.

[0110] Although embodiments of this application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application. Therefore, any changes or modifications made in accordance with the claims and description of this application should fall within the scope of the patent coverage of this application.

Claims

1. A control method for a vehicle spray system, characterized in that, The vehicle spraying system includes a spraying assembly and a body section located above the vehicle's wheel hubs. The body section has through holes. The spraying assembly includes a first nozzle and a second nozzle for spraying mist from the inner surface of the body section toward the outer surface to the outside of the through holes. The spray kinetic energy of the first nozzle is different from that of the second nozzle. The control method includes: The target scene where the vehicle is located is obtained, and the target scene is one of three scenes: a welcoming scene, a night driving scene, and a rapid acceleration scene. Based on the target scene, a corresponding target nozzle is determined, and the target nozzle is controlled to spray. The target nozzle includes at least one of the first nozzle and the second nozzle.

2. The control method for a vehicle spray system according to claim 1, characterized in that, The vehicle further includes guide vanes for guiding the mist ejected by the first nozzle and the second nozzle. The control method further includes: Obtain the preset rotation angle value of the guide vane relative to the vehicle body in the target scenario; Control the guide vanes to rotate to the preset rotation angle value.

3. The control method for the vehicle spray system according to claim 2, characterized in that, The control method further includes: If there are multiple preset rotation angle values, then obtain the preset sorting strategy for each preset rotation angle value; Based on the preset sorting strategy, the guide vanes are controlled to rotate sequentially to each preset rotation angle value.

4. The control method for the vehicle spray system according to claim 2 or 3, characterized in that, The control method further includes: Obtain the preset rotation speed value of the guide vane as it rotates to the preset rotation angle value in the target scenario; The guide vanes are controlled to rotate to the preset rotation angle value based on the preset rotation speed value.

5. The control method for a vehicle spray system according to claim 2 or 3, characterized in that, The control method further includes: The preset duration for which the guide vane is located at the preset rotation angle value in the target scenario is obtained; The guide vanes are controlled to pause based on the preset duration.

6. The control method for a vehicle spray system according to any one of claims 1-3, characterized in that, The vehicle also includes a light source for illuminating the mist ejected from the target nozzle and capable of emitting light of different colors. The control method further includes: Obtain a preset emission mode of the light source in the target scene, wherein the preset emission mode includes at least a monochromatic light mode and a multicolor light mode with different emission colors; The light source is controlled to emit light based on the preset light emission mode.

7. A vehicle spraying system, characterized in that, include: The body section is located above the wheel hub of the vehicle and has through holes; A spray assembly includes an atomizing mechanism and a nozzle assembly. The atomizing mechanism is located on the inner surface of the vehicle body and is used to atomize liquid. The nozzle assembly includes a first nozzle and a second nozzle, both of which are installed in the through hole. Both the first nozzle and the second nozzle are connected to the atomizing mechanism and are used to spray the mist output by the atomizing mechanism from the inner surface of the vehicle body toward the outer surface of the vehicle body. The spray kinetic energy of the first nozzle is greater than that of the second nozzle.

8. The vehicle spraying system according to claim 7, characterized in that, The vehicle spray system also includes guide vanes, which are installed inside the through hole; The guide vane includes a hinged end and a movable end arranged along the wheelbase direction of the vehicle. The hinged end is hinged to the vehicle body, and the movable end has a locked state and an unlocked state. When the movable end is in the unlocked state, the movable end can rotate relative to the vehicle body to open the through hole; When the movable end is in the locked state, the movable end covers the through hole.

9. The vehicle spraying system according to any one of claims 7-8, characterized in that, The vehicle spray system also includes a light source, which is installed inside the through hole.

10. The vehicle spraying system according to any one of claims 7-8, characterized in that, The vehicle body includes a hood or a front fender; the through hole is provided in the hood or the front fender.

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