Vehicle brake cooling device and method and vehicle

Abstract

The invention relates to the field of vehicles, in particular to a vehicle brake cooling device and method and a vehicle, the cooling device comprises a storage system, the storage system comprises a gas storage device and a water storage device, the gas storage device is connected with the water storage device through a pressure regulating valve, a water level detector is arranged in the water storage device, and the water level detector can detect the water level of the water storage device; the action system comprises water outlet pipelines and water injection nozzles, one end of each water outlet pipeline is provided with a plurality of water injection nozzles, the water injection nozzles are aligned with vehicle wheels, the other end of each water outlet pipeline is provided with an electromagnetic valve, and the two electromagnetic valves are connected with the water storage device through a three-way valve; the control system comprises a temperature sensor and a controller, the temperature sensor can detect temperature information of a wheel brake pad / brake wheel with the maximum brake heat fading performance in a non-contact mode, the controller can control opening and closing of the electromagnetic valve according to the temperature information, and the controller can control opening and closing of the pressure regulating valve according to the water level information. Therefore, automatic temperature monitoring and vehicle cooling starting can be realized.

Description

Technical Field

[0001] The present invention relates to the field of vehicles, and in particular to a vehicle brake cooling device, method and vehicle. Background Art

[0002] Currently, large vehicles on the market are rarely equipped with devices that can monitor the temperature of the brake system in real time and accurately. Especially in the application of key parts such as brake pads and brake discs, most of them rely on the user's experience to perform manual cooling, which cannot be completed in a timely manner. In the long run, it is easy to accelerate the aging of vehicle brake system components. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art that manual cooling cannot be completed in a timely manner and easily accelerates the aging of vehicle brake system components, and to provide a vehicle brake cooling device, method and vehicle.

[0004] In a first aspect, the present invention provides a vehicle brake cooling method, comprising the following steps:

[0005] S1: Determine the wheel with the greatest brake thermal fade performance on the vehicle;

[0006] S2: Installing a vehicle brake cooling device on a vehicle, wherein the vehicle brake cooling device comprises:

[0007] A storage system, comprising an air storage device and a water storage device, wherein the air storage device is connected to the water storage device via a pressure regulating valve, and a water level detector is provided in the water storage device, and the water level detector can detect the water level of the water storage device;

[0008] The action system includes a water outlet pipeline and a water spraying port, wherein one end of each of the water outlet pipelines is provided with a plurality of the water spraying ports, the water spraying ports are aimed at the vehicle wheels, and the other end of each of the water outlet pipelines is provided with a solenoid valve, and two of the solenoid valves are connected to the water storage device through a three-way valve;

[0009] A control system, comprising a temperature sensor and a controller, wherein the temperature sensor can non-contactly detect the temperature information of the wheel brake pad / brake wheel with the greatest brake thermal decay performance, the controller can control the opening and closing of the solenoid valve according to the temperature information, and the controller can control the opening and closing of the pressure regulating valve according to the water level information;

[0010] S3: When the water level information is higher than a first threshold, the controller controls to open the pressure regulating valve, and the gas storage device pushes the water in the water storage device to the three-way valve;

[0011] When the temperature information is higher than a second threshold, the controller controls the solenoid valve to be opened, and the water stored in the three-way valve is sprayed to the vehicle wheels through the water outlet pipeline and the water spray port.

[0012] The present invention first determines the wheel with the greatest thermal decay performance of the vehicle brake, and then uses a temperature sensor to detect the temperature information of the brake pad / brake wheel with the greatest thermal decay performance in a non-contact detection manner, and further determines the opening and closing of the action system through the detected temperature information. In this way, compared with the existing method of setting temperature sensors on all vehicle wheels, the present invention can save the number of temperature sensors and reduce costs; compared with the existing method of randomly setting temperature sensors, the present invention sets the temperature sensor on the wheel with the greatest thermal decay performance of the vehicle brake, which can more accurately reflect the actual situation of the highest temperature of the wheel and perform brake cooling more timely.

[0013] The present invention collects water level information of a water storage device by arranging a water level detector. When the water level information is higher than a first threshold value, a controller controls the opening of a pressure regulating valve, and an air storage device pushes the water in the water storage device to the three-way valve, so that a large amount of water can be stored in the three-way valve and the pipeline in advance. Then, when the temperature information is higher than a second threshold value, the controller controls the opening of the solenoid valve, and the water stored in the three-way valve can be sprayed to the vehicle wheels more quickly through a water outlet pipeline and a water spray port, so that brake cooling can be performed more timely.

[0014] Preferably, in S3, the water stored in the three-way valve is sprayed only to the wheel with the largest brake thermal decay performance of the vehicle through the water outlet pipeline and the water spraying port. The wheel with the largest brake thermal decay performance of the vehicle is the wheel of the vehicle that needs to be cooled the most. In some embodiments, the water pipeline and the water spraying port are only arranged near the wheel with the largest brake thermal decay performance of the vehicle, and only sprayed to the wheel with the largest brake thermal decay performance of the vehicle, which can reduce costs to a certain extent.

[0015] Preferably, in S3, the water stored in the three-way valve is sprayed to all wheels of the vehicle through the water outlet pipeline and the water spraying port. In some embodiments, the water outlet pipeline and the water spraying port are arranged at all wheels, and when it is detected that the temperature information of the brake pad / brake wheel with the greatest brake thermal decay performance is higher than the second threshold, the water outlet pipeline and the water spraying port are sprayed to all wheels of the vehicle in time, which can further improve the comprehensiveness of vehicle cooling and improve driving safety.

[0016] Preferably, the temperature sensor is an infrared sensor, which can better realize non-contact detection.

[0017] Preferably, in S1, a brake thermal fade performance comparison test is performed to determine the wheel of the vehicle with the greatest brake thermal fade performance.

[0018] In a second aspect, the present invention provides a vehicle brake cooling device, comprising:

[0019] A storage system, comprising an air storage device and a water storage device, wherein the air storage device is connected to the water storage device via a pressure regulating valve, and a water level detector is provided in the water storage device, and the water level detector can detect the water level of the water storage device;

[0020] The action system includes a water outlet pipeline and a water spraying port, wherein one end of each of the water outlet pipelines is provided with a plurality of the water spraying ports, the water spraying ports are aimed at the vehicle wheels, and the other end of each of the water outlet pipelines is provided with a solenoid valve, and two of the solenoid valves are connected to the water storage device through a three-way valve;

[0021] The control system includes a temperature sensor and a controller, wherein the temperature sensor can non-contactly detect the temperature information of the wheel brake pad / brake wheel with the largest brake thermal decay performance, the controller can control the opening and closing of the solenoid valve according to the temperature information, and the controller can control the opening and closing of the pressure regulating valve according to the water level information.

[0022] The air storage device of the present invention is directly connected to the water storage device with a pressure regulating valve, which can timely ensure the air pressure of the water storage device and avoid the problem of insufficient air pressure during continuous long-term use; the present invention adopts a non-contact temperature sensor to avoid direct installation on the brake, reducing the impact of vibration and adverse conditions on the detection accuracy of the temperature sensor. The present invention sets the temperature sensor on the wheel with the largest thermal decay performance of the vehicle brake, which can more accurately reflect the actual situation of the highest temperature of the wheel and perform brake cooling more timely.

[0023] The present invention collects water level information of a water storage device by arranging a water level detector. When the water level information is higher than a first threshold value, a controller controls the opening of a pressure regulating valve, and an air storage device pushes the water in the water storage device to the three-way valve, so that a large amount of water can be stored in the three-way valve and the pipeline in advance. Then, when the temperature information is higher than a second threshold value, the controller controls the opening of the solenoid valve, and the water stored in the three-way valve can be sprayed to the vehicle wheels more quickly through a water outlet pipeline and a water spray port, so that brake cooling can be performed more timely.

[0024] Preferably, when the water level information is lower than the third threshold, the water level detector and / or the controller can give an alarm, thereby reminding the staff to replenish the water in the water storage device, thereby ensuring that the action system can discharge water in time.

[0025] Preferably, the pressure regulating valve is provided with a check valve and a filter. The pressure regulating valve can control the pressure to avoid danger caused by pressure overload and affect the service life. The pressure regulating valve is equipped with a filter element to clean the air medium to ensure the use condition and service life of the pipeline and nozzle.

[0026] In a third aspect, the present invention provides a vehicle, including any one of the vehicle brake cooling devices, which can timely cool down the brakes and improve driving safety.

[0027] Preferably, the water jets are directed only at the wheels of the vehicle having the greatest brake thermal fade performance.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] The present invention first determines the wheel with the greatest thermal decay performance of the vehicle brake, and then uses a temperature sensor to detect the temperature information of the brake pad / brake wheel with the greatest thermal decay performance in a non-contact detection manner, and further determines the opening and closing of the action system through the detected temperature information. In this way, compared with the existing method of setting temperature sensors on all vehicle wheels, the present invention can save the number of temperature sensors and reduce costs; compared with the existing method of randomly setting temperature sensors, the present invention sets the temperature sensor on the wheel with the greatest thermal decay performance of the vehicle brake, which can more accurately reflect the actual situation of the highest temperature of the wheel and perform brake cooling more timely.

[0030] The present invention collects water level information of a water storage device by arranging a water level detector. When the water level information is higher than a first threshold value, a controller controls the opening of a pressure regulating valve, and an air storage device pushes the water in the water storage device to the three-way valve, so that a large amount of water can be stored in the three-way valve and the pipeline in advance. Then, when the temperature information is higher than a second threshold value, the controller controls the opening of the solenoid valve, and the water stored in the three-way valve can be sprayed to the vehicle wheels more quickly through a water outlet pipeline and a water spray port, so that brake cooling can be performed more timely.

[0031] The air storage device of the present invention is directly connected to the water storage device with a pressure regulating valve, which can timely ensure the air pressure of the water storage device and avoid the problem of insufficient air pressure during continuous long-term use; the present invention adopts a non-contact temperature sensor to avoid direct installation on the brake, reducing the impact of vibration and harsh conditions on the detection accuracy of the temperature sensor.

[0032] The present invention can realize automatic temperature monitoring and vehicle cooling start through a storage system, an action system and a control system, thereby improving vehicle driving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 The present invention is a schematic structural diagram of a vehicle brake cooling device.

[0034] Figure 2 It is a schematic diagram of the structure of the controller described in the present invention.

[0035] Figure 3 It is a schematic diagram of a semi-trailer train used for a comparative test of brake thermal decay performance of the present invention.

[0036] Markings in the figure:

[0037] 1-air storage device, 2-pressure regulating valve, 3-water inlet, 4-water storage device, 5-water outlet, 6-water outlet pipeline, 7-water spray outlet, 8-air pipe quick-connect conversion port, 9-filter, 10-three-way valve, 11-solenoid valve, 12-controller, 121-temperature display screen, 122-first wiring port, 123-second wiring port, 124-controller switch, 125-sensor access port, 13-temperature sensor, 14-vehicle power supply, 15-safety valve, 16-pressure gauge. DETAILED DESCRIPTION

[0038] The present invention is further described in detail below in conjunction with specific embodiments. However, this should not be understood as the scope of the above subject matter of the present invention being limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

[0039] Unless otherwise specified, in the description of the specific embodiments of the present invention, the terms indicating the orientation or position relationship such as "up", "down", "left", "right", "center", "inside", "outside", etc. are all expressions based on the orientation or position relationship shown in the drawings, or are the orientation or position relationship when the invented product / equipment / device is usually used. These terms of orientation or position relationship are only for the convenience of describing the scheme of the present invention or simplifying the description in the specific embodiments, so as to facilitate the technicians to quickly understand the scheme, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific position relationship, and therefore cannot be understood as a limitation on the present invention.

[0040] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel" and the like appear, it does not mean that the corresponding devices / components / elements are required to be absolutely horizontal or vertical or overhanging or parallel, but may be slightly tilted or have deviations. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but may be slightly tilted. Alternatively, it can be simplified to mean that the corresponding devices / components / elements are set in directions such as "horizontal", "vertical", "overhanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the scheme of the present invention.

[0041] In addition, the expressions “first”, “second”, “third”, etc., which appear in the terms, are merely used to distinguish the description of the same or similar components and should not be understood as emphasizing or implying the relative importance of specific components.

[0042] In addition, in the description of the embodiments of the present invention, "several", "plurality" and "a number" represent at least 2. It can be any number such as 2, 3, 4, 5, 6, 7, 8, 9, and even more than 9.

[0043] In addition, in the description of the technical solution of the present invention, unless otherwise clearly specified / defined / restricted, the terms "set", "install", "connect", "connected", "provided with", "laid", and "arranged" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, and can be welding, riveting, bolting, threading, and other commonly used connection means in the field. This connection can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal connection of two elements.

[0044] Example 1

[0045] The present invention provides a vehicle brake cooling method, comprising the following steps:

[0046] S1: Determine the wheel on the vehicle with the greatest brake fade performance.

[0047] In some embodiments, a brake thermal fade performance comparison test may be performed to determine the wheel with the greatest brake thermal fade performance on the vehicle.

[0048] The test system can be composed of a vehicle train performance tester, a pedal dynamometer, a multi-channel temperature recorder, a thermocouple, a tire pressure gauge, and an electronic truck scale. In addition, it can also include a laptop computer and a power supply device. The vehicle train performance tester mainly measures the driving braking performance, including braking distance, average braking deceleration, and braking time; the pedal dynamometer mainly measures the braking force applied to the brake pedal during braking; the multi-channel temperature recorder mainly continuously collects and stores the temperature value of the thermocouple; the thermocouple is used to measure the temperature of the brake disc and brake drum; the tire pressure gauge measures the tire pressure before the test; and the electronic truck scale measures the axle load of the test vehicle when it is empty and fully loaded.

[0049] Tire pressure gauge and electronic truck scale shall ensure that the tire pressure and axle load of the test vehicle meet the technical requirements before the test. Automobile performance tester can be installed on the upper part of the center console of the cab, and can be fixed on the front windshield with a large suction cup. Pedal force meter can be installed on the upper surface of brake pedal. Multi-channel temperature recorder can be installed in the storage box on the left side of the semi-trailer and fixed with soft foam material. Thermocouples can be installed on the brake linings of disc brakes and drum brakes respectively. The linings are punched with holes, and the thermocouples are fixed with copper sleeves equipped with springs to adjust the gap caused by the wear of the brake pads and ensure that the copper sleeves and the brake disc surface are in contact during the measurement process.

[0050] The test semi-trailer train consists of a 6×4 tractor and a three-axle box semi-trailer. The test vehicle schematic (including the distance between each axle) is as follows: Figure 3 shown.

[0051] The thermal decay performance test method is as follows: the semi-trailer train brakes at an initial speed of 60km / h, releases the brakes when the speed drops to 30km / h, then accelerates to a stable speed of 60km / h and brakes again, releases the brakes when the speed drops to 30km / h, and repeats the test 20 times. During the test, the temperature data of the six brakes of the semi-trailer are continuously collected.

[0052] The brake temperature at the end of the full-load test of the vehicle train is shown in Table 1.

[0053] Table 1 Brake temperature of vehicle train full load test (℃)

[0054]

[0055] It can be seen from Table 1 that for a semi-trailer with disc brakes, the left / right axle 1 is the wheel with the largest brake thermal decay performance; for a semi-trailer with drum brakes, the left / right axle 3 is the wheel with the largest brake thermal decay performance.

[0056] S2: Install a vehicle brake cooling device on the vehicle, wherein the vehicle brake cooling device is as follows: Figure 1-2 As shown, it includes a storage system, a motion system and a control system.

[0057] The storage system includes an air storage device 1 and a water storage device 4 . The air storage device 1 is connected to the water storage device 4 via a pressure regulating valve 2 . A water level detector is provided in the water storage device 4 . The water level detector can detect the water level of the water storage device 4 .

[0058] The gas storage device 1 may be a gas cylinder or a gas storage box. The gas storage device 1 may be provided with a safety valve 15 and a pressure gauge 16. The pressure gauge 16 is used to detect the internal air pressure of the gas storage device 1, and the safety valve 15 is used to achieve monitoring protection.

[0059] The water storage device 4 may be a water tank, and is provided with a water inlet 3 and a water outlet 5. The water inlet 3 may be a 6-way inlet, and the water outlet 5 may be a 4-way inlet. The water outlet 5 of the water storage device 4 is connected to a water outlet pipeline 6 of the action system.

[0060] The gas storage device 1 can be provided with the pressure regulating valve 2, and directly connected to the water storage device 4 through the pressure regulating valve 2. In this way, the gas storage device 1 is provided with a pressure regulating valve 2 with controllable pressure, which can avoid danger caused by pressure overload and affect the service life. At the same time, the air pressure of the water storage device 4 can be guaranteed in time to avoid the problem of insufficient air pressure during continuous long-term use. In a further preferred solution, the pressure regulating valve 2 can be provided with a check valve and a filter 9, and can be provided with a filter element to clean the air medium, so as to ensure the use condition and life of the pipeline and nozzle. In a further preferred solution, the pressure regulating valve 2 can also be connected to the water storage device 4 through the air pipe quick-connect conversion port 8.

[0061] The water level detector can adopt a ball valve detection water level system, etc. The present invention collects the water level information of the water storage device 4 by setting a water level detector. When the water level information is higher than the first threshold, the controller 12 controls the opening of the pressure regulating valve 2, and the gas storage device 1 pushes the water in the water storage device 4 to the three-way valve 10, so that a large amount of water can be stored in the three-way valve 10 and the pipeline in advance. Then, when the temperature information is higher than the second threshold, the controller 12 controls the opening of the solenoid valve 11, and the water stored in the three-way valve 10 can be sprayed to the vehicle wheels more quickly through the water outlet pipeline 6 and the water spray port 7, so that the brake cooling can be carried out more timely. In a further preferred scheme, when the water level information is lower than the third threshold, the water level detector and / or the controller 12 can alarm. Thereby, the staff can be reminded to replenish the water in the water storage device 4, thereby ensuring that the action system can discharge water in time.

[0062] The action system includes a water outlet pipeline 6 and a water spray outlet 7. A plurality of water spray outlets 7 are arranged at one end of each of the water outlet pipelines 6. The water spray outlets 7 are aimed at the vehicle wheels. A solenoid valve 11 is arranged at the other end of each of the water outlet pipelines 6. The two solenoid valves 11 are connected to the water storage device 4 via a three-way valve 10.

[0063] At least three water spray ports 7 are disposed at one end of each of the water outlet pipelines 6 . Usually, the number of the water spray ports 7 may be 3-10, and the water spray ports 7 are aimed at the vehicle wheels.

[0064] The control system includes a temperature sensor 13 and a controller 12. The temperature sensor 13 can detect the temperature information of the wheel brake pad / brake wheel with the largest brake thermal decay performance in a non-contact manner. The controller 12 can control the opening and closing of the solenoid valve 11 according to the temperature information, and the controller 12 can control the opening and closing of the pressure regulating valve 2 according to the water level information. The controller 12 and the temperature sensor 13 can be powered by a vehicle-mounted power supply 14.

[0065] The present invention adopts a non-contact temperature sensor 13 to avoid direct installation on the brake, reducing the impact of vibration and adverse conditions on the detection accuracy of the temperature sensor 13. The present invention sets the temperature sensor 13 on the wheel with the largest thermal decay performance of the vehicle brake, which can more accurately reflect the actual situation of the highest temperature of the wheel and perform brake cooling more timely.

[0066] In some preferred solutions, the temperature sensor 13 may be an infrared sensor, which can better implement non-contact detection.

[0067] In some preferred schemes, the controller 12 may include a temperature display screen 121, a first socket 122, a second socket 123, a controller switch 124 and a sensor access port 125. The controller 12 can be installed in the driver's cab so that the vehicle driver can timely grasp the temperature information of the vehicle wheels, which can play a certain early warning role.

[0068] S3: When the water level information is higher than the first threshold, the controller 12 controls to open the pressure regulating valve 2, and the gas storage device 1 pushes the water in the water storage device 4 to the three-way valve 10;

[0069] When the temperature information is higher than the second threshold, the controller 12 controls the solenoid valve 11 to be opened, and the water stored in the three-way valve 10 is sprayed to the vehicle wheels through the water outlet pipeline 6 and the water spray port 7 .

[0070] The present invention first determines the wheel with the greatest thermal decay performance of the vehicle brake, and then uses the temperature sensor 13 to detect the temperature information of the brake pad / brake wheel with the greatest thermal decay performance in a non-contact detection manner, and further determines the start and close of the action system through the detected temperature information. In this way, compared with the existing method of setting the temperature sensor 13 on all vehicle wheels, the present invention can save the number of temperature sensors 13 and reduce costs; compared with the existing method of randomly setting the temperature sensor 13, the present invention sets the temperature sensor 13 on the wheel with the greatest thermal decay performance of the vehicle brake, which can more accurately reflect the actual situation of the highest temperature of the wheel and perform brake cooling more timely.

[0071] The present invention collects water level information of the water storage device 4 by setting a water level detector. When the water level information is higher than a first threshold value, the controller 12 controls the opening of the pressure regulating valve 2, and the air storage device 1 pushes the water in the water storage device 4 to the three-way valve 10, so that a large amount of water can be stored in the three-way valve 10 and the pipeline in advance. Then, when the temperature information is higher than a second threshold value, the controller 12 controls the opening of the solenoid valve 11, and the water stored in the three-way valve 10 can be sprayed to the vehicle wheels more quickly through the water outlet pipeline 6 and the water nozzle 7, so that the brake cooling can be performed more timely.

[0072] In some embodiments, in S3, the water stored in the three-way valve 10 is sprayed only to the wheel with the largest brake thermal decay performance of the vehicle through the water outlet line 6 and the water spray port 7. The wheel with the largest brake thermal decay performance of the vehicle is the wheel of the vehicle that needs to be cooled the most. In some embodiments, the water outlet line 6 and the water spray port 7 are only arranged near the wheel with the largest brake thermal decay performance of the vehicle, and only sprayed to the wheel with the largest brake thermal decay performance of the vehicle, which can reduce costs to a certain extent.

[0073] In some embodiments, in S3, the water stored in the three-way valve 10 is sprayed to all wheels of the vehicle through the water outlet line 6 and the water spray port 7. In some embodiments, the water outlet line 6 and the water spray port 7 are arranged at all wheels, and when it is detected that the temperature information of the brake pad / brake wheel with the largest brake thermal decay performance is higher than the second threshold, the water outlet line 6 and the water spray port 7 are sprayed to all wheels of the vehicle in time, which can further improve the comprehensiveness of vehicle cooling and improve driving safety.

[0074] Example 2

[0075] A vehicle is provided, wherein brake cooling is performed using the vehicle brake cooling method of embodiment 1. The vehicle is usually driven on an outdoor road, either at high speed or low speed, and may include a mixer truck, etc.

[0076] Example 3

[0077] A vehicle uses the vehicle brake cooling device of embodiment 1 to perform brake cooling. The vehicle is usually driven on outdoor roads, either at high speed or low speed, and may include a mixer truck, etc.

[0078] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vehicle brake cooling method, characterized in that: The following steps are involved: S1: Determine the wheel with the greatest brake thermal fade performance on the vehicle; S2: Installing a vehicle brake cooling device on a vehicle, wherein the vehicle brake cooling device comprises: A storage system, comprising an air storage device and a water storage device, wherein the air storage device is connected to the water storage device via a pressure regulating valve, and a water level detector is provided in the water storage device, and the water level detector can detect the water level of the water storage device; The action system includes a water outlet pipeline and a water spraying port, wherein one end of each of the water outlet pipelines is provided with a plurality of the water spraying ports, the water spraying ports are aimed at the vehicle wheels, and the other end of each of the water outlet pipelines is provided with a solenoid valve, and two of the solenoid valves are connected to the water storage device through a three-way valve; A control system, comprising a temperature sensor and a controller, wherein the temperature sensor can non-contactly detect the temperature information of the wheel brake pad / brake wheel with the greatest brake thermal decay performance, the controller can control the opening and closing of the solenoid valve according to the temperature information, and the controller can control the opening and closing of the pressure regulating valve according to the water level information; S3: When the water level information is higher than a first threshold, the controller controls to open the pressure regulating valve, and the gas storage device pushes the water in the water storage device to the three-way valve; When the temperature information is higher than a second threshold, the controller controls the solenoid valve to be opened, and the water stored in the three-way valve is sprayed to the vehicle wheels through the water outlet pipeline and the water spray port.

2. A vehicle brake cooling method according to claim 1, characterized in that: In S3, the water stored in the three-way valve is sprayed only to the wheel with the largest thermal decay performance of the vehicle brake through the water outlet pipeline and the water spray port.

3. A vehicle brake cooling method according to claim 1, characterized in that: In S3, the water stored in the three-way valve is sprayed to all wheels of the vehicle through the water outlet pipeline and the water spray port.

4. A vehicle brake cooling method according to claim 1, characterized in that: The temperature sensor is an infrared sensor.

5. A vehicle brake cooling method according to any one of claims 1 to 4, characterized in that: In S1, a brake thermal fade performance comparison test is performed to determine the wheel of the vehicle with the greatest brake thermal fade performance.

6. A vehicle brake cooling device, characterized in that: include: A storage system, comprising an air storage device and a water storage device, wherein the air storage device is connected to the water storage device via a pressure regulating valve, and a water level detector is provided in the water storage device, and the water level detector can detect the water level of the water storage device; The action system includes a water outlet pipeline and a water spraying port, wherein one end of each of the water outlet pipelines is provided with a plurality of the water spraying ports, the water spraying ports are aimed at the vehicle wheels, and the other end of each of the water outlet pipelines is provided with a solenoid valve, and two of the solenoid valves are connected to the water storage device through a three-way valve; The control system includes a temperature sensor and a controller, wherein the temperature sensor can non-contactly detect the temperature information of the wheel brake pad / brake wheel with the largest brake thermal decay performance, the controller can control the opening and closing of the solenoid valve according to the temperature information, and the controller can control the opening and closing of the pressure regulating valve according to the water level information.

7. A vehicle brake cooling device according to claim 6, characterized in that: When the water level information is lower than a third threshold, the water level detector and / or the controller may issue an alarm.

8. A vehicle brake cooling device according to claim 6, characterized in that: The pressure regulating valve is provided with a check valve and a filter.

9. A vehicle, characterized in that: It comprises a vehicle brake cooling device as described in any one of claims 6-8.

10. A vehicle according to claim 9, characterized in that: The water jets are directed only at the wheels of the vehicle that have the greatest brake fade performance.

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