Wheel protection system and control method

Abstract

The invention relates to the technical field of automobile wheel protection, in particular to a wheel protection system and a control method. The wheel protection system comprises a wheel protection cover, a water mist spraying device, a water tank, a controller, a tire pressure sensor and a power supply device; the power supply device comprises a battery module and a kinetic energy recovery device, and the battery module and the kinetic energy recovery device are both electrically connected with the water mist spraying device and the controller. The method comprises the steps that a tire pressure initial value is preset, and a vehicle is started; the current tire pressure is continuously monitored, and whether the tire pressure value exceeds the limit or not is judged; if it is monitored that the current tire pressure value exceeds the preset range, a water mist spraying device is started for spraying, and the change condition of the tire pressure value is detected after the first detection period; if the detected tire pressure value is reduced, continuously spraying; and continuously spraying for a second detection period, detecting the change condition of the tire pressure value again, and taking corresponding measures. The problems that in the prior art, a wheel cooling system cannot be accurately controlled, and tire pressure rising reason judgment and early warning are lacked are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile wheel protection, and in particular to a wheel protection system and a control method. Background Art

[0002] As the main working part of a car, tires are mainly used to support the car body, cushion external impacts, achieve contact with the road surface and ensure the driving performance of the vehicle. Since they are mainly rubber products and contain gas, temperature has a greater impact on tires. Compared with ideal working conditions, high temperature conditions will cause the gas in the tire to expand due to heat, increase the air pressure in the tire, reduce the elasticity of the outer tire, and have the risk of tire blowout.

[0003] Wheel guards are generally installed at the wheel openings of vehicles and have the function of improving the vehicle's NVH performance and protecting body components. The purpose of tire thermal management is to keep the tires at a good working temperature under long-distance conditions. Overheating of tires will cause abnormally high tire pressure, which can easily lead to a reduction in the area of ​​tire contact with the ground, and thus cause vehicle accidents.

[0004] CN108516016B discloses a car wheel cover for cooling, including an arc-shaped wheel cover body, a cooling cavity is provided in the wheel cover body, a support plate is provided in the cooling cavity, a first tension spring is provided at one end of the support plate, a first arc-shaped slider is fixedly provided at one end of the first tension spring, the first arc-shaped slider is provided with a second through hole, and a first sponge is connected to one end of the first arc-shaped slider; a second tension spring is fixedly provided at the other end of the support plate, a second arc-shaped slider is fixedly connected to one end of the second tension spring, the second arc-shaped slider is provided with a third through hole, and a second sponge is connected to one end of the second arc-shaped slider; a one-way valve is provided in the cooling cavity; and a leakage hole is provided in the inner circle of the wheel cover body. The sudden change in speed of the car causes the first arc-shaped slider and the second arc-shaped slider to squeeze out more cooling water to absorb heat and cool down. However, this prior art cannot detect the tire pressure of the tire and cannot accurately control the cooling system of the wheel.

[0005] CN114454853B discloses a brake cooling control device and control method for automobiles. The control device includes a vehicle body controller, an air reservoir, a water storage barrel, a control valve assembly, a plurality of water spraying devices arranged on each tire, and a plurality of tire pressure sensors arranged on each tire. The air inlet of the water storage barrel is connected to the air reservoir, the water outlet of the water storage barrel is connected to the water inlet of the control valve assembly, and the water outlet of the control valve assembly is connected to the water inlet of each water spraying device. The control method is as follows: when the vehicle is driving, the vehicle body controller determines whether the actual tire pressure value received from each tire pressure sensor is higher than the corresponding tire pressure reference value and the difference between the two is greater than the set value. If so, the vehicle body controller controls the control valve assembly to open and cool the brake at the tire. However, the prior art cannot determine whether the increase in tire pressure is caused by the increase in tire temperature, and there is a risk of misjudgment. Misjudgment of the cause of the increase in tire pressure will also lead to a tire blowout. Summary of the invention

[0006] The purpose of the present invention is to provide a wheel protection system and control method, which can perform cooling operations according to changes in tire pressure in combination with a water mist injection automatic control system, and can also calibrate the initial tire pressure value and alarm for abnormal tire pressure; the water mist injection device can be directly powered by a kinetic energy recovery device, which saves energy and simplifies the traditional power supply workflow; and solves the problems of the prior art in being unable to accurately control the cooling system of the wheel and lacking judgment and early warning of the cause of tire pressure increase.

[0007] The present invention provides the following solution

[0008] A wheel protection system comprises a wheel protection cover, a water mist spray device is fixedly connected to the top surface of the wheel protection cover, the water mist spray device is a loop structure with multiple bends to form parallel pipelines, a plurality of nozzles are arranged at the lower end of the loop structure, one end of the water mist spray device is connected to a water tank, the water mist spray device is electrically connected to a controller, the controller is electrically connected to a tire pressure sensor and a power supply device, respectively, the power supply device is also electrically connected to the water mist spray device; the power supply device comprises a battery module, the battery module is electrically connected to a kinetic energy recovery device, the battery module and the kinetic energy recovery device are both electrically connected to the water mist spray device and the controller.

[0009] Furthermore, the wheel guard is a U-shaped structure as a whole, and a downwardly recessed receiving groove is provided on the top surface of the wheel guard; the water mist spraying device includes a water pipe, and the water pipe is received in the receiving groove; the water pipe is a loop structure of parallel pipelines formed by multiple bends, and a nozzle is provided at the bottom of each parallel pipeline, and a through hole is opened at a position corresponding to each nozzle on the receiving groove, and the spraying end of each nozzle is arranged inside the wheel guard through the corresponding through hole.

[0010] The top surface of the wheel guard is provided with a accommodating groove to accommodate the water pipe, so that the top surface of the water pipe will not protrude too much, reducing bumps; the water pipe is a parallel pipeline structure with multiple bends, and a nozzle is provided at the bottom of each parallel pipeline. This structure can make the water mist cover a larger area and spray more evenly.

[0011] Furthermore, a water inlet is provided at one end of the water pipe, and the water inlet is connected to the water tank through a pipe; a water inlet pump is provided in the water inlet, and the water inlet pump is electrically connected to the controller; a fixing strip is provided on the upper surface of the water pipe, and the two ends of the fixing strip are fixedly connected to the upper surfaces of the two side edges of the accommodating groove of the wheel guard, and a slot matching the water pipe is provided in the middle of the fixing strip, and the fixing strip is in limited contact with the water pipe through the slot.

[0012] The water inlet pump is electrically connected to the controller, and the controller controls the switch and power of the water inlet pump, thereby controlling the opening, closing and water output of the water mist spraying device; the water mist spraying device is fixed with a fixing strip, which is convenient and firm to install.

[0013] Furthermore, the controller is used to receive the signal sent by the tire pressure sensor, perform calculations and judgments based on the signal, and then control the water mist spray device to perform spraying operations, and control the power supply device to switch the power supply mode.

[0014] Furthermore, the tire pressure sensor is a built-in tire pressure sensor, and is connected to the controller via a wireless signal.

[0015] The built-in tire pressure sensor has high measurement accuracy, good stability and strong anti-theft performance.

[0016] A wheel protection system control method, based on the above wheel protection system, comprises the following steps:

[0017] S1. Preset the initial tire pressure value and start the vehicle;

[0018] S2, continuously monitor the current tire pressure and determine whether the tire pressure value exceeds the limit;

[0019] S3. If the current tire pressure value monitored exceeds the preset range, the water mist spray device is activated to spray, and the change of the tire pressure value is detected after the first detection cycle;

[0020] S4. If the detected tire pressure value decreases, continue spraying;

[0021] S5. Continue spraying for the second detection cycle and then detect the change of tire pressure value again and take corresponding measures.

[0022] Furthermore, after step S2, if the monitored current tire pressure value is less than the initial value, the current tire pressure value is set to the initial value and step S2 is repeated;

[0023] It also includes, after step S3, if the detected tire pressure value remains unchanged, stopping the spraying, setting the current tire pressure value to the initial value and repeating step S2, and sending a tire pressure warning at the same time to remind the user of abnormal tire pressure; if the detected tire pressure value increases, stopping the spraying, and sending a tire pressure warning to remind the user to check for wheel abnormalities.

[0024] Furthermore, the step S4 comprises the following steps:

[0025] S41, if the detected tire pressure value decreases and the decrease value is greater than or equal to 50% of the excess difference, continue spraying;

[0026] S42, if the detected tire pressure value decreases and the decrease value is less than 50% of the excess difference, increase the spraying water volume and continue spraying;

[0027] The over-limit difference is equal to the difference between the current tire pressure value detected in step S2 and the upper limit of the preset range.

[0028] Furthermore, the step S5 comprises the following steps:

[0029] S51, if the detected tire pressure value is within the preset range, stop spraying;

[0030] S52: If the detected tire pressure value exceeds the preset range, stop spraying, set the current tire pressure value as the initial value and repeat step S2.

[0031] Furthermore, after step S2, if the water mist spray device needs to be started during the braking process of the vehicle, the kinetic energy recovery device is controlled to provide the converted electric energy directly to the water mist spray device; if the water mist spray device does not need to be started during the braking process of the vehicle, the kinetic energy recovery device is controlled to store the converted electric energy in the battery module.

[0032] Compared with the prior art, the present invention has the following advantages:

[0033] The wheel protection system and control method provided by the present invention can perform cooling operations according to changes in tire pressure in combination with a water mist injection automatic control system, and can also perform tire pressure initial value calibration and tire pressure abnormality alarm; the water mist injection device can be directly powered by a kinetic energy recovery device, simplifying the traditional work process of charging the battery from the kinetic energy recovery device and then the battery powering the water mist injection system, making the power conversion efficiency higher; it solves the problems of the prior art in which the cooling system of the wheel cannot be accurately controlled and the lack of judgment on the cause of tire pressure increase, parameter calibration and early warning leading to vehicle tire blowout. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Attached Figure 1 is a schematic diagram of the wheel protection system of the present invention;

[0036] Attached Figure 2 It is a schematic diagram of the wheel protection cover and the water mist spraying device of the present invention;

[0037] Attached Figure 3 A bottom view schematic diagram of the wheel protection cover of the present invention;

[0038] Attached Figure 4This is a schematic diagram of the wheel protection system control method of the present invention.

[0039] In the figure:

[0040] 1-wheel guard, 11-receiving groove, 12-fixing bar, 2-water mist spray device, 21-water pipe, 22-water inlet, 23-nozzle, 3-water tank, 4-controller, 5-tire pressure sensor, 6-power supply device, 61-battery module, 62-kinetic energy recovery device. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0042] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings, and "multiple" generally includes at least two.

[0043] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0044] It should be understood that although the terms first, second, third, etc. may be used to describe in the embodiments of the present application, these descriptions should not be limited to these terms. These terms are only used to distinguish the descriptions. For example, without departing from the scope of the embodiments of the present application, the first may also be referred to as the second, and similarly, the second may also be referred to as the first.

[0045] As used herein, the words "if" and "if" may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0046] It should also be noted that the term "includes", "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, so that a commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprising a ..." do not exclude the existence of other identical elements in the commodity or device including the elements.

[0047] It should be particularly noted that any symbols and / or numbers in the specification that are not marked in the accompanying drawings are not drawing marks.

[0048] Example 1, please refer to Figure 1 As shown, this embodiment provides a wheel protection system, including a wheel protection cover 1, a water mist spray device 2 is fixedly connected to the top surface of the wheel protection cover 1, a water inlet 22 of the water mist spray device 2 is connected to a water tank 3, the water mist spray device 2 is electrically connected to a controller 4, the controller 4 is also electrically connected to a tire pressure sensor 5 and a power supply device 6, respectively, and the power supply device 6 is also electrically connected to the water mist spray device 2.

[0049] Specifically, see Figure 2 As shown, the wheel guard 1 is a U-shaped structure as a whole, and its cross-section is arc-shaped. The wheel guard 1 is arranged above the automobile wheel and surrounds the wheel circumferentially to prevent damage to the vehicle body due to splashing mud and rocks and improve the NVH performance of the vehicle; the top surface of the wheel guard 1 is provided with a downwardly recessed receiving groove 11 for installing and accommodating the water mist spray device 2.

[0050] See also Figure 3 As shown, the water mist spraying device 2 includes a water pipe 21, which is accommodated in the receiving groove 11 and fixed by a fixing strip 12; the water pipe 21 is a parallel pipe structure with multiple bends, and a nozzle 23 is provided at the bottom of each parallel pipe for spraying water mist. In this embodiment, there are six parallel pipes, each of which is provided with two nozzles 23, a total of 12 nozzles 23, such a structure can make the water mist cover a larger range and spray more evenly; through holes are opened at positions corresponding to each nozzle 23 on the receiving groove 11, and the spraying end of each nozzle 23 passes through the through hole and is arranged on the wheel Inside the protective cover 1; a water inlet 22 is provided at one end of the water pipe 21, and the water inlet 22 is connected to the water tank 3; a water inlet pump is provided at the water inlet 22, which is electrically connected to the controller 4, and the controller 4 controls the switch and power of the water inlet pump, thereby controlling the opening, closing and water output of the water mist spraying device 2; fixing strips 12 are respectively provided at the front and rear of the water pipe 21, and the two ends of the fixing strip 12 are welded to the upper surfaces of the edges of both sides of the accommodating groove 11, and a card slot matching the water pipe 21 is provided in the middle of the fixing strip 12, and the card slot is contacted with the water pipe 21 through the limiting contact.

[0051] The tire pressure sensor 5 is a built-in tire pressure sensor, which is installed in the tire of the car, and can detect the tire pressure in real time and send a wireless signal to the controller 4. The built-in tire pressure sensor is a sensor installed on the air nozzle inside the tire, which directly measures the air pressure, temperature and other data inside the tire, and transmits these data to the receiver in the car in real time, so that the driver can understand the condition of the tire in time; its advantages are high measurement accuracy, good stability and strong anti-theft performance.

[0052] The controller 4 receives the signal sent by the tire pressure sensor 5, makes calculations and judgments, and controls the water mist spraying device 2 to perform the spraying operation.

[0053] The power supply device 6 is used to provide electric energy to the water mist spray device 2 and the controller 4. The power supply device 6 includes a battery module 61 and a kinetic energy recovery device 62, both of which are electrically connected to the water mist spray device 2 and the controller 4. The battery module 61 can be a power battery of the vehicle body or an independently powered battery for storing and providing electric energy; the kinetic energy recovery device 62 can convert kinetic energy into electric energy during the vehicle braking process; the tire temperature and tire pressure of a car often rise sharply during braking. If spraying is required at this time, the controller 4 controls the kinetic energy recovery device 62 to directly provide the converted electric energy to the water mist spray device 2, which can simplify the traditional work process of charging the battery from the kinetic energy recovery device 62 and then supplying power to the water mist spray system, thereby making the electric energy conversion efficiency higher; if spraying for cooling is not required during braking, the controller 4 controls the kinetic energy recovery device 62 to store the converted electric energy in the battery module 61.

[0054] See also Figure 4 As shown, this embodiment also provides a wheel protection system control method, comprising the following steps:

[0055] S1. Preset the initial tire pressure value and start the vehicle;

[0056] S2, continuously monitor the current tire pressure and determine whether the tire pressure value exceeds the limit;

[0057] S3, if the current tire pressure value monitored exceeds the preset range, start the water mist spray device 2 to spray, and detect the change of the tire pressure value after the first detection cycle;

[0058] S4. If the detected tire pressure value decreases, continue spraying;

[0059] S5. Continue spraying for the second detection cycle and then detect the change of tire pressure value again and take corresponding measures.

[0060] The method further includes, after step S2, if the monitored current tire pressure value is less than the initial value, setting the current tire pressure value to the initial value;

[0061] The method further includes, after step S3, if the detected tire pressure value is unchanged, stopping the spraying, setting the current tire pressure value to the initial value, and continuously monitoring the tire pressure again, and sending a tire pressure warning to remind the user that the tire pressure is abnormal;

[0062] If the detected tire pressure value increases, the spraying will stop and a tire pressure warning will be sent to remind the user to check the wheel abnormality;

[0063] Step S4 includes the following steps:

[0064] S41, if the detected tire pressure value decreases and the decrease value is greater than or equal to the excess difference value, continue spraying;

[0065] S42, if the detected tire pressure value decreases and the decrease value is less than the excess difference value, increase the spraying water volume and continue spraying;

[0066] The over-limit difference is equal to the difference between the current tire pressure value detected in step S2 and the upper limit of the preset range.

[0067] Step S5 includes the following steps:

[0068] S51, if the detected tire pressure value is within the preset range, stop spraying;

[0069] S52: If the detected tire pressure value exceeds the preset range, stop spraying, set the current tire pressure value to the initial value, and continue to monitor the tire pressure again.

[0070] The preset range of the tire pressure value mentioned above can be set according to different tire types and user habits, and the detection cycle is usually 50s to 70s; the preset range of the tire pressure value preferably used in this embodiment is from the initial value to 110% of the initial value, the first detection cycle is 60s, and the second detection cycle is 70s.

[0071] Specifically, in this embodiment, when the customer uses the wheel protection system for the first time, he first presets the initial tire pressure value to 2.5 bar on the controller 4; after starting the car, the tire pressure sensor 5 automatically detects the current tire pressure value and sends it to the controller 4, and the controller 4 determines whether the current tire pressure value is greater than 2.75 bar; at a certain moment, the tire pressure value is detected to be 3.0 bar, which is greater than 2.75 bar, and the water mist spray device 2 is started to spray water mist on the tire for 60 seconds; after 60 seconds, the tire pressure sensor 5 detects that the tire pressure value is less than 2.875 bar, and the current water volume is continued to spray for 70 seconds. When the tire pressure value is detected to be less than 2.75 bar, the controller 4 controls the water mist spray device 2 to stop spraying.

[0072] At another moment when the car is driving, if the tire pressure is detected to be 3.0 bar, which is greater than 2.75 bar, the water mist spray device 2 is started to spray water mist on the tire for 60 seconds; after 60 seconds, the tire pressure sensor 5 detects that the tire pressure is between 2.875 bar and 30 bar. At this time, the controller 4 controls the water mist spray device 2 to increase the water spraying amount and continue spraying for 70 seconds. If it is detected that the tire pressure is still greater than 2.75 bar, it continues to spray, sets the current tire pressure to the initial value, and continues to monitor the tire pressure again.

[0073] At another moment when the car is driving, if the tire pressure is detected to be 3.0 bar, which is greater than 2.75 bar, the water mist spray device 2 is started to spray water mist on the tire for 60 seconds; after 60 seconds, the tire pressure sensor 5 detects that the tire pressure is still 3.0 bar, then the controller 4 determines that the tire pressure increase is not caused by temperature, then stops spraying and sends a tire pressure warning to remind the user that the tire pressure is abnormal, and sets the current tire pressure value to the initial value, and continues to detect the tire pressure value again.

[0074] At another moment when the car is driving, if the tire pressure is detected to be 3.0 bar, which is greater than 2.75 bar, the water mist spray device 2 is started to spray water mist on the tire for 60 seconds; after 60 seconds, the tire pressure sensor 5 detects that the tire pressure is greater than 3.0 bar, then the controller 4 determines that the tire pressure increase is not caused by temperature and there is a risk of tire blowout. At this time, the spraying is stopped and a tire pressure warning is sent to remind the user to check the wheel abnormality.

[0075] If it is detected at another time when the vehicle is traveling that the current tire pressure is less than the initial value, the controller 4 sets the current tire pressure value as the initial value and continues to detect the tire pressure again.

[0076] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wheel protection system, characterized in that: The invention comprises a wheel guard (1), a water mist spray device (2) is fixedly connected to the top surface of the wheel guard (1), the water mist spray device (2) is a loop structure formed by multiple bends to form parallel pipelines, a plurality of nozzles (23) are arranged at the lower end of the loop structure, one end of the water mist spray device (2) is connected to a water tank (3), the water mist spray device (2) is electrically connected to a controller (4), the controller (4) is electrically connected to a tire pressure sensor (5) and a power supply device (6), and the power supply device (6) is also electrically connected to the water mist spray device (2); the power supply device (6) comprises a battery module (61), the battery module (61) is electrically connected to a kinetic energy recovery device (62), and the battery module (61) and the kinetic energy recovery device (62) are both electrically connected to the water mist spray device (2) and the controller (4).

2. The wheel protection system according to claim 1, characterized in that: The wheel guard (1) is a U-shaped structure as a whole, and a downwardly recessed receiving groove (11) is provided on the top surface of the wheel guard (1); the water mist spraying device (2) comprises a water pipe (21), and the water pipe (21) is received in the receiving groove (11); the water pipe (21) is a loop structure formed by multiple bends to form parallel pipelines, and a nozzle (23) is provided at the bottom of each parallel pipeline, and a through hole is opened at a position corresponding to each nozzle (23) on the receiving groove (11), and the spray end of each nozzle (23) passes through the corresponding through hole and is arranged inside the wheel guard (1).

3. The wheel protection system according to claim 2, characterized in that: A water inlet (22) is provided at one end of the water pipe (21), and the water inlet (22) is connected to the water tank (3) through a pipeline; a water inlet pump is provided in the water inlet (22), and the water inlet pump is electrically connected to the controller (4); a fixing strip (12) is provided on the upper surface of the water pipe (21), and the two ends of the fixing strip (12) are fixedly connected to the upper surfaces of the two side edges of the receiving groove (11) of the wheel guard (1); a clamping groove matching the water pipe (21) is provided in the middle of the fixing strip (12), and the fixing strip (12) is contacted with the water pipe (21) through the clamping groove.

4. The wheel protection system according to claim 3, characterized in that: The controller (4) is used to receive the signal sent by the tire pressure sensor (5), perform calculations and judgments based on the signal, and then control the water mist spraying device (2) to perform a spraying operation, and control the power supply device (6) to switch the power supply mode.

5. The wheel protection system according to claim 4, characterized in that: The tire pressure sensor (5) is a built-in tire pressure sensor and is connected to the controller (4) via a wireless signal.

6. A wheel protection system control method, characterized in that: The wheel protection system according to any one of claims 1 to 5 comprises the following steps: S1. Preset the initial tire pressure value and start the vehicle; S2, continuously monitor the current tire pressure and determine whether the tire pressure value exceeds the limit; S3, if the current tire pressure value monitored exceeds the preset range, the water mist spraying device (2) is started to spray, and the change of the tire pressure value is detected after the first detection cycle; S4. If the detected tire pressure value decreases, continue spraying; S5. Continue spraying for the second detection cycle and then detect the change of tire pressure value again and take corresponding measures.

7. The wheel protection system control method according to claim 6, characterized in that: The method further includes, after step S2, if the monitored current tire pressure value is less than the initial value, setting the current tire pressure value to the initial value and repeating step S2; It also includes, after step S3, if the detected tire pressure value remains unchanged, stopping the spraying, setting the current tire pressure value to the initial value and repeating step S2, and sending a tire pressure warning at the same time to remind the user of abnormal tire pressure; if the detected tire pressure value increases, stopping the spraying, and sending a tire pressure warning to remind the user to check for wheel abnormalities.

8. The wheel protection system control method according to claim 6, characterized in that: The step S4 comprises the following steps: S41, if the detected tire pressure value decreases and the decrease value is greater than or equal to 50% of the excess difference, continue spraying; S42, if the detected tire pressure value decreases and the decrease value is less than 50% of the excess difference, increase the spraying water volume and continue spraying; The over-limit difference is equal to the difference between the current tire pressure value detected in step S2 and the upper limit of the preset range.

9. The wheel protection system control method according to claim 6, characterized in that: The step S5 comprises the following steps: S51, if the detected tire pressure value is within the preset range, stop spraying; S52: If the detected tire pressure value exceeds the preset range, stop spraying, set the current tire pressure value as the initial value and repeat step S2.

10. The wheel protection system control method according to claim 6, characterized in that: The method further includes, after step S2, if the water mist spray device (2) needs to be activated during the braking process of the vehicle, controlling the kinetic energy recovery device (62) to directly provide the converted electric energy to the water mist spray device (2); if the water mist spray device (2) does not need to be activated during the braking process of the vehicle, controlling the kinetic energy recovery device (62) to store the converted electric energy in the battery module (61).

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