Vehicle braking system and vehicle having the same

Abstract

The present invention discloses a braking system of a vehicle and a vehicle having the same, wherein the braking system comprises: an air reservoir, the air reservoir having an air outlet, a first air supply port and a second air supply port; a brake valve, the brake valve having an air inlet and an air outlet, the air inlet being connected to the air outlet; an air compressor, the air compressor being connected to the first air supply port to provide air to the air reservoir; a brake gas recovery component, the brake gas recovery component comprising a recovery pipeline, a one-way valve and a gas compression device, the one-way valve and the gas compression device being connected in series on the recovery pipeline, the one-way valve being used to control the one-way flow of air discharged from the brake valve into the second air supply port, and the gas compression device being used to compress the air discharged from the brake valve into the air reservoir. According to the braking system of the vehicle of the present invention, the exhaust gas discharged after braking can be reused and replenished into the air reservoir, thereby reducing the number and time of the air compressor working, and can reduce the noise pollution caused by the exhaust gas after braking, thereby ensuring the working reliability of the braking system.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a braking system of a vehicle and a vehicle having the same. Background Art

[0002] With the rapid growth of the total number of cars, while the whole society is enjoying the huge convenience and benefits brought by cars and the automobile industry, it is also suffering from social problems such as energy consumption, environmental pollution, traffic congestion, etc., which seriously restrict the sustainable development of society.

[0003] In order to solve environmental pollution and other problems, electric vehicles have gradually become the new favorite in the automotive industry. The development of electric vehicles is an important step to enhance the international competitiveness and influence of the automotive industry. Although electric vehicles have made great progress in technology, some bottleneck problems still need to be solved; insufficient mileage, long charging time, etc. In the braking system, electric air brakes need to use electric air compressors to supplement the brake air source. Frequent braking will cause the air compressor to work frequently or for a long time. The power of the air compressor is relatively high. Long-term operation will cause power loss, which will affect the mileage of electric vehicles. The exhaust gas generated after braking needs to be discharged into the atmosphere, which will emit a certain amount of noise during the discharge, causing a certain degree of noise pollution. Summary of the invention

[0004] The present invention proposes a vehicle braking system, which can reuse the exhaust gas discharged after braking and replenish it into the air storage cylinder, thereby reducing the number and time of the air compressor working, thereby increasing the vehicle's endurance, and can reduce the noise pollution caused by the exhaust gas after braking, which plays a positive role in improving the vehicle's braking level, and is conducive to ensuring the reliability of the braking system.

[0005] The present invention also provides a vehicle having the braking system.

[0006] A braking system of a vehicle according to an embodiment of the present invention comprises: an air cylinder, the air cylinder having an air outlet, a first air supply port and a second air supply port, the air outlet, the first air supply port and the second air supply port are all connected to the air storage space of the air cylinder; a brake valve, the brake valve having an air inlet and an exhaust port, the air inlet being connected to the air outlet; an air compressor, the air compressor being connected to the first air supply port to provide air to the air cylinder; a brake gas recovery component, the brake gas recovery component comprising a recovery pipeline, a one-way valve and a gas compression device, one end of the recovery pipeline being connected to the exhaust port of the brake valve, the other end of the recovery pipeline being connected to the second air supply port, the one-way valve and the gas compression device being connected in series on the recovery pipeline, the one-way valve being used to control the one-way flow of air discharged from the brake valve into the second air supply port, and the gas compression device being used to compress the air discharged from the brake valve into the air cylinder.

[0007] According to the braking system of the vehicle in the embodiment of the present invention, a brake gas recovery component is provided, and the brake gas recovery component includes a recovery pipeline, a one-way valve and a gas compression device. As a result, the exhaust gas discharged after braking can be reused and replenished into the air tank, thereby reducing the number and time of the air compressor working, thereby increasing the vehicle's endurance, and can reduce the noise pollution caused by exhaust gas after braking, which plays a positive role in improving the braking level of the vehicle. In addition, by providing a one-way valve, the gas in the air tank can be prevented from flowing back to the brake valve, which is beneficial to ensuring the reliability of the braking system.

[0008] In some embodiments of the present invention, the brake gas recovery component also includes: a vacuum tank, a vacuum pump and a control valve, the vacuum tank, the vacuum pump, the control valve and the gas compression device are sequentially connected in series on the recovery pipeline, the control valve has an inlet, a first outlet and a second outlet, the inlet of the control valve is connected to the vacuum pump, the first outlet is connected to the gas compression device, and the second outlet is connected to the atmosphere, the control valve has a first state and a second state, in the first state, the first outlet is closed and the second outlet is open; in the second state, the first outlet is open and the second outlet is closed.

[0009] In some embodiments of the present invention, the gas compression device includes a stator, a rotor and blades, the stator has an installation cavity, the rotor is connected to the blades and is located in the installation cavity, the rotor is eccentrically arranged, and a plurality of blades are arranged at intervals in the circumferential direction of the rotor. The stator is provided with an air inlet and an air outlet connected to the installation cavity, the air inlet is connected to the first outlet, and the air outlet is connected to the one-way valve.

[0010] In some embodiments of the present invention, the blades are connected to the rotor via an elastic member, and the elastic member often pushes the blades to abut against the inner circumferential wall of the stator.

[0011] In some embodiments of the present invention, the gas compression device further comprises a sealing end cover, which covers the open end of the stator, defines the installation cavity between the sealing end cover and the stator, and is detachably connected to the stator.

[0012] In some embodiments of the present invention, a main shaft of a driving motor of the vehicle is connected to one end of the rotor to drive the blades to rotate, and the other end of the rotor is connected to a transmission shaft of the vehicle.

[0013] In some embodiments of the present invention, the brake gas recovery component also includes: a first detection device, the first detection device is used to detect whether the drive motor of the vehicle is running, when the first detection device detects that the drive motor is stopped, the control valve switches to the first state; when the first detection device detects that the drive motor is running, the control valve switches to the second state.

[0014] In some embodiments of the present invention, a protection valve is also provided on the recovery pipeline, and the protection valve is connected to the brake valve and the vacuum tank. The protection valve has an air inlet end, a first air outlet end and a second air outlet end. The air inlet end is connected to the exhaust port of the brake valve, the first air outlet end is connected to the vacuum tank, and the second air outlet end is connected to the atmosphere. The protection valve has a first mode and a second mode. In the first mode, the first air outlet end is closed and the second air outlet end is opened; in the second mode, the first air outlet end is opened and the second air outlet end is closed.

[0015] In some embodiments of the present invention, the brake system recovery component also includes: a second detection device, which is used to detect whether the vacuum pump is faulty. When the second detection device detects that the vacuum pump is faulty, the control valve switches to the first mode; when the second detection device detects that the vacuum pump is normal, the control valve switches to the second mode.

[0016] A vehicle according to an embodiment of the present invention includes the above-mentioned braking system.

[0017] According to the vehicle of the embodiment of the present invention, by providing the above-mentioned braking system, the exhaust gas discharged after braking can be reused and replenished into the air tank, thereby reducing the number and time of the air compressor working, thereby increasing the vehicle's endurance, and can reduce the noise pollution caused by exhaust gas after braking, which plays a positive role in improving the braking level of the vehicle, and the reliability of the vehicle operation is high.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a gas circuit schematic diagram of a brake system according to an embodiment of the present invention;

[0020] Figure 2 is a control principle diagram of a braking system according to an embodiment of the present invention;

[0021] Figure 3 is a schematic plan view of a partial structure of a gas compression device according to an embodiment of the present invention;

[0022] Figure 4 is a three-dimensional schematic diagram of a partial structure of a gas compression device according to an embodiment of the present invention;

[0023] Figure 5 is a three-dimensional schematic diagram of a gas compression device according to an embodiment of the present invention, wherein a sealing end cover closes the open end of the stator.

[0024] Reference numerals:

[0025] Braking system 100;

[0026] Gas storage cylinder 10; gas outlet 11; first gas replenishment port 12; second gas replenishment port 13;

[0027] Brake valve 20; front axle brake valve 21; rear axle brake valve 22; air inlet 2a; exhaust port 2b;

[0028] Air compressor 30;

[0029] Brake gas recovery assembly 40;

[0030] Recovery pipeline 41; one-way valve 42; vacuum tank 43; vacuum pump 44;

[0031] Control valve 45; inlet 451; first outlet 452; second outlet 453;

[0032] Gas compression device 46; stator 461; mounting cavity 4611; air inlet 4612; air outlet 4613; rotor 462; blade 463; elastic member 4631; compartment 46a; sealing end cover 464; threaded fastener 465;

[0033] Protection valve 50; air inlet end 51; first air outlet end 52; second air outlet end 53. DETAILED DESCRIPTION

[0034] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0035] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific processes and examples of materials, but those of ordinary skill in the art can be aware of the applicability of other processes and / or the use of other materials.

[0036] Please refer to the following Figure 1-5 The braking system 100 of a vehicle and a vehicle having the same according to an embodiment of the present invention are described. For example, the vehicle may be an electric vehicle, and the braking system 100 may be an electric air brake system.

[0037] Reference Figure 5 As shown, the vehicle braking system 100 according to the embodiment of the present invention may include: an air reservoir 10, a brake valve 20, an air compressor 30 and a brake gas recovery assembly 40. For example, referring to Figure 1 As shown, the brake valve 20 may include a front axle brake valve 21 and a rear axle brake valve 22. It can be understood that when the front axle brake valve 21 is opened, the left front wheel brake exhaust and the right front wheel brake exhaust of the vehicle can flow to the brake gas recovery component 40 through the front axle brake valve 21; when the rear axle brake valve 22 is opened, the left rear wheel brake exhaust and the right rear wheel brake exhaust of the vehicle can flow to the brake gas recovery component 40 through the rear axle brake valve 22.

[0038] Reference Figure 1As shown, the air cylinder 10 has an air outlet 11, a first air supply port 12 and a second air supply port 13, and the air outlet 11, the first air supply port 12 and the second air supply port 13 are all connected to the air storage space of the air cylinder 10, the brake valve 20 has an air inlet 2a and an exhaust port 2b, the air inlet 2a is connected to the air outlet 11, the air compressor 30 is connected to the first air supply port 12 to provide air to the air cylinder 10, and the brake gas recovery component 40 includes a recovery pipeline 41, a one-way valve 42 and a gas compression device 46, one end of the recovery pipeline 41 is connected to the exhaust port 2b of the brake valve 20, and the other end of the recovery pipeline 41 is connected to the second air supply port 13, the one-way valve 42 and the gas compression device 46 are connected in series on the recovery pipeline 41, the one-way valve 42 is used to control the one-way flow of air discharged from the brake valve 20 into the second air supply port 13, and the gas compression device 46 is used to compress the air discharged from the brake valve 20 into the air cylinder 10.

[0039] It can be understood that when the user steps on the brake during vehicle driving, the brake valve 20 opens to achieve braking, and the brake valve 20 discharges gas. At the same time, the gas compression device 46 works to reuse the exhaust gas discharged after braking and replenish it into the air cylinder 10. In this way, the number and time of the air compressor 30 working can be reduced, thereby increasing the vehicle's endurance, and reducing the noise pollution caused by exhaust after braking, which plays a positive role in improving the braking level of the vehicle. At the same time, it can be understood that the air pressure in the air cylinder 10 is relatively high. By setting a one-way valve 42, the gas in the air cylinder 10 can be prevented from flowing back to the brake valve 20, which is beneficial to ensure the reliability of the braking system 100.

[0040] In view of this, according to the braking system 100 of the vehicle in an embodiment of the present invention, a brake gas recovery component 40 is provided, and one end of the brake gas recovery component 40 is connected to the exhaust port 2b of the brake valve 20, and the other end of the brake gas recovery component 40 is connected to the second air supply port 13. Therefore, the exhaust gas discharged after braking can be reused and replenished into the air cylinder 10, thereby reducing the number and time of the air compressor 30 working, thereby increasing the vehicle's endurance, and can reduce the noise pollution caused by the exhaust after braking, which plays a positive role in promoting the improvement of the vehicle's braking level. At the same time, by providing a one-way valve 42, the gas in the air cylinder 10 can be prevented from flowing back to the brake valve 20, which is beneficial to ensure the reliability of the braking system 100.

[0041] In some embodiments of the present invention, reference Figure 1As shown, the brake gas recovery component 40 also includes: a vacuum tank 43, a vacuum pump 44 and a control valve 45. The vacuum tank 43, the vacuum pump 44, the control valve 45 and the gas compression device 46 are sequentially connected in series on the recovery pipeline 41. The control valve 45 has an inlet 451, a first outlet 452 and a second outlet 453. The inlet 451 of the control valve 45 is connected to the vacuum pump 44, the first outlet 452 is connected to the gas compression device 46, and the second outlet 453 is connected to the atmosphere. The control valve 45 has a first state and a second state. In the first state, the first outlet 452 is closed and the second outlet 453 is opened; in the second state, the first outlet 452 is opened and the second outlet 453 is closed. For example, the control valve 45 can be a solenoid valve, and there is signal transmission between the solenoid valve and the vehicle control device, which is conducive to improving the intelligence of the brake system 100.

[0042] It is understandable that when the vehicle is started, the vacuum pump 44 is started to make the vacuum tank 43 reach a certain degree of negative pressure. When the negative pressure in the vacuum tank 43 reaches a preset value, the vacuum pump 44 stops working. When the gas compression device 46 is not running, the control valve 45 can be switched to the first state, that is, the first outlet 452 is controlled to be closed and the second outlet 453 is controlled to be open, so that the brake gas extracted by the vacuum pump 44 can be smoothly discharged into the atmosphere through the second outlet 453 of the control valve 45.

[0043] When the brake gas recovery component 40 is operating normally and the vehicle is driving and the brakes are applied, the brake valve 20 discharges gas. At this time, the interior of the vacuum tank 43 is in a negative pressure state, and the gas discharged by the brake valve 20 will smoothly reach the vacuum tank 43. As the gas enters the vacuum tank 43, the internal pressure of the vacuum tank 43 increases. The vacuum pump 44 detects a decrease in the vacuum degree and starts again to extract the gas in the vacuum tank 43. When the gas compression device 46 is working, the control valve 45 can be switched to the second state, that is, the first outlet 452 is opened and the second outlet 453 is closed. The gas is compressed by the gas compression device 46, and after compression, it is transported back to the air storage cylinder 10 through the one-way valve 42 as a supplement to the gas source, thereby making the recovery of the brake gas safe and reliable, which is beneficial to reducing safety hazards.

[0044] In some embodiments of the present invention, reference Figure 3-Figure 5 As shown, the gas compression device 46 includes a stator 461, a rotor 462 and a blade 463. The stator 461 has a mounting cavity 4611. The rotor 462 is connected to the blade 463 and is located in the mounting cavity 4611. The rotor 462 is eccentrically arranged. In other words, the central axis of the rotor 462 and the central axis of the stator 461 are not on the same straight line. A plurality of blades 463 are arranged at intervals in the circumferential direction of the rotor 462. The stator 461 is provided with an air inlet 4612 and an air outlet 4613 communicating with the mounting cavity 4611. The air inlet 4612 is communicated with the first outlet 452 (refer to Figure 1), the outlet hole 4613 is connected to the one-way valve 42. For example, the distance between the central axis of the rotor 462 and the air inlet hole 4612 is greater than the distance between the central axis of the rotor 462 and the air outlet hole 4613. In this way, the gas compression effect of the gas compression device 46 on the gas can be guaranteed, and the structure of the gas compression device 46 can be simplified, which is conducive to reducing the production cost.

[0045] In some embodiments of the present invention, reference Figure 4 As shown, the blade 463 is connected to the rotor 462 through an elastic member 4631, and the elastic member 4631 often pushes the blade 463 to abut against the inner peripheral wall of the stator 461. For example, the elastic member 4631 is a spring, and a mounting groove is provided on the rotor 462. The spring is fixed in the mounting groove. During the rotation of the blade 463, the spring is in a compressed state so that the spring often pushes the blade 463 to abut against the inner peripheral wall of the stator 461. It can be understood that a cavity 46a is defined between two adjacent blades 463, and the elastic member 4631 can keep the blade 463 in contact with the inner wall of the stator 461 through elastic action, and can maintain the sealing of each cavity 46a, which is conducive to improving the working efficiency of the gas compression device 46.

[0046] In some embodiments of the present invention, reference Figure 4 and Figure 5 As shown, the gas compression device 46 further includes a sealing end cover 464, which covers the open end of the stator 461, defines an installation cavity 4611 between the sealing end cover 464 and the stator 461, and the sealing end cover 464 is detachably connected to the stator 461. Thus, the gas compression device 46 is easily installed and removed.

[0047] For example, the sealing end cover 464 is connected to the stator 461 through a threaded fastener 465. It can be understood that the threaded fastener 465 has the advantages of simple structure and easy assembly, and the sealing end cover 464 and the stator 461 can be tightly connected through the threaded fastener 465. In addition, the cost can be reduced while ensuring the connection strength between the sealing end cover 464 and the stator 461. Optionally, the threaded fastener 465 can be a screw, a bolt or a stud.

[0048] In some embodiments of the present invention, reference Figure 3-Figure 5As shown, the main shaft of the driving motor is connected to one end of the rotor 462 to drive the blades 463 to rotate, and the other end of the rotor 462 is connected to the transmission shaft of the vehicle. For example, the gas compression device 46 adopts the main structure of a vane air compressor. The stator 461 is fixed to the frame crossbeam of the vehicle through a bracket. One end of the rotor 462 is connected to the main shaft of the driving motor, and the other end of the rotor 462 is connected to the transmission shaft of the vehicle. When the driving motor is started, the rotor 462 rotates to drive the blade 463 to rotate. A spring is installed in the center of the blade 463 and the rotor 462. The spring makes the blade 463 contact with the inner wall of the stator 462 through elastic action to maintain the sealing of each compartment 46a. The gas discharged from the vacuum pump 44 enters the installation cavity 4611 of the stator 461 from the air inlet 4612. After the blade 463 rotates one circle, the compressed gas is discharged from the air outlet 4613. The air outlet 4613 is connected to the one-way valve 42. The compressed gas enters the air storage cylinder 10 through the one-way valve 42 to complete the gas circulation. It is understandable that the rotor 462 can be rotated by the driving motor to compress the gas, and there is no need to provide a separate driving device to drive the rotor 462 to rotate, which has low energy efficiency and is conducive to reducing production costs and practical costs.

[0049] In some optional embodiments of the present invention, referring to Figure 1 and Figure 2 As shown, the brake gas recovery assembly 40 also includes: a first detection device (not shown), the first detection device is used to detect whether the driving motor of the vehicle is running. When the first detection device detects that the driving motor is stopped, the control valve 45 switches to the first state; when the first detection device detects that the driving motor is running, the control valve 45 switches to the second state. Among them, the first detection device and the control device of the vehicle have signal transmission, which is conducive to realizing the intelligence of the brake system 100.

[0050] It can be understood that when the vehicle is started, the vacuum pump 44 is started to make the vacuum tank 43 reach a certain degree of negative pressure. When the negative pressure in the vacuum tank 43 reaches a preset value, the vacuum pump 44 stops working. If the vehicle's drive motor does not rotate, the control valve 45 can be switched to the first state, that is, the first outlet 452 is closed and the second outlet 453 is opened, so that the brake gas extracted by the vacuum pump 44 can be smoothly discharged through the second outlet 453 of the control valve 45; when the brake gas recovery component 40 is driving normally and the brake is applied, the brake valve 20 discharges the gas. Since the inside of the vacuum tank 43 is in a negative pressure state at this time, the discharged The gas will smoothly reach the vacuum tank 43. As the gas enters the vacuum tank 43, the internal pressure of the vacuum tank 43 increases. The vacuum pump 44 detects the decrease in vacuum degree and starts again to extract the gas in the vacuum tank 43. At this time, due to the rotation of the main shaft of the drive motor, the control valve 45 is in the second state, the first outlet 452 leading to the gas compression device 46 is opened, and the second outlet 453 leading to the atmosphere is closed. The gas is compressed by the gas compression device 46 and then transported back to the air storage cylinder 10 through the one-way valve 42 as a supplement to the gas source, thereby making the control of the brake gas recovery component 40 simple and reliable.

[0051] In some embodiments of the present invention, reference Figure 1 As shown, a protection valve 50 is also provided on the recovery pipeline 41, and the protection valve 50 is connected to the brake valve 20 and the vacuum tank 43. The protection valve 50 has an air inlet end 51, a first air outlet end 52 and a second air outlet end 53. The air inlet end 51 is connected to the exhaust port 2b of the brake valve 20, the first air outlet end 52 is connected to the vacuum tank 43, and the second air outlet end 53 is connected to the atmosphere. The protection valve 50 has a first mode and a second mode. In the first mode, the first air outlet end 52 is closed and the second air outlet end 53 is opened; in the second mode, the first air outlet end 52 is opened and the second air outlet end 53 is closed. For example, the protection valve 50 can be a solenoid valve, and the protection valve 50 has a signal transmission with the control device of the vehicle. It can be understood that by setting the protection valve 50, the brake gas can selectively flow into the atmosphere or into the vacuum tank 43, so as to ensure that the brake gas can still be discharged smoothly in the case of the brake gas recovery component 40.

[0052] In some embodiments of the present invention, the brake gas recovery component 40 also includes: a second detection device, the second detection device is used to detect whether the vacuum pump 44 is faulty. When the second detection device detects that the vacuum pump 44 is faulty, the control valve 45 switches to the first mode, and the vehicle's instrument can report the fault; when the second detection device detects that the vacuum pump 44 is normal, the control valve 45 switches to the second mode. It can be understood that the second detection device and the vehicle's control system have signal transmission. When the second detection device detects that the vacuum pump 44 is faulty, the protection valve 50 is switched to the first mode, that is, the first air outlet end 52 leading to the vacuum pump 44 is closed, and the second air outlet end 53 leading to the atmosphere is opened, which can ensure that the brake gas can still be discharged smoothly when the vacuum pump 44 is damaged, which is conducive to ensuring the reliability of the brake gas recovery component 40. When the brake gas recovery component 40 is not faulty, the protection valve 50 switches to the second mode, the first air outlet end 52 leading to the vacuum tank 43 is opened, and the second air outlet end 53 leading to the atmosphere is closed. When the brake valve 20 is closed, the gas discharged from the brake valve 20 can flow to the vacuum tank 43 through the protection valve 50. As the gas enters the vacuum tank 43, the internal pressure of the vacuum tank 43 increases. The vacuum pump 44 detects the decrease in vacuum degree and starts again to extract the gas in the vacuum tank 43. When the gas compression device 46 is working, the control valve 45 is switched to the second state, that is, the first outlet 452 is opened and the second outlet 453 is closed. The gas is compressed by the gas compression device 46 and then transported back to the air storage cylinder 10 through the one-way valve 42 as a supplement to the gas source, thereby making the recovery of the brake gas safe and reliable, which is beneficial to reducing safety hazards.

[0053] The vehicle according to the embodiment of the present invention includes the braking system 100 according to the above embodiment of the present invention. Therefore, by providing the braking system 100 according to the above embodiment of the present invention, the exhaust gas discharged after braking can be reused and replenished into the air reservoir 10, reducing the number and time of the air compressor 30 working, thereby increasing the endurance of the vehicle, and reducing the noise pollution caused by the exhaust gas after braking, which plays a positive role in promoting the improvement of the vehicle's braking level.

[0054] For example, in some examples, refer to Figure 2 As shown, the vehicle can be controlled in the following ways:

[0055] Power up the vehicle;

[0056] Detect whether the vacuum pump 44 fails. When the second detection device detects that the vacuum pump 44 fails, the protection valve 50 switches to the first mode, that is, the first gas outlet end 52 leading to the vacuum tank 43 is opened, and the second gas outlet end 53 leading to the atmosphere is closed, so as to ensure that the brake gas can still be discharged smoothly when the vacuum pump 44 fails; when the second detection device detects that the vacuum pump 44 has no fault, the protection valve 50 switches to the second mode, that is, the first gas outlet end 52 leading to the vacuum tank 43 is closed, and the second gas outlet end 53 leading to the atmosphere is opened, so that the gas in the protection valve 50 can flow to the vacuum tank 43;

[0057] Detect whether the vehicle's drive motor is running. When the first detection device detects that the drive motor is not running, the control valve 45 switches to the first state, that is, the first outlet 452 is controlled to be closed and the second outlet 453 is opened, so that the brake gas extracted by the vacuum pump 44 can be smoothly discharged into the atmosphere through the second outlet 453 of the control valve 45; when the first detection device detects that the drive motor is running, the control valve 45 switches to the second state, that is, the first outlet 452 is controlled to be opened and the second outlet 453 is closed, and the gas can be compressed by the gas compression device 46, and then transported back to the gas storage cylinder 10 through the one-way valve 42 after compression, so as to complete the recovery of the exhaust gas. In this way, the cruising range of the brake system 100 can be increased, the starting frequency and continuous use time of the air compressor 30 can be reduced, and the noise of the brake system 100 when exhausting can be reduced, which plays a positive role in improving the braking level of the vehicle.

[0058] Other components and operations of the vehicle according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0059] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0061] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A braking system (100) for a vehicle, characterized in that: include: An air storage cylinder (10), the air storage cylinder (10) comprising an air outlet (11), a first air replenishment port (12) and a second air replenishment port (13), the air outlet (11), the first air replenishment port (12) and the second air replenishment port (13) all being in communication with an air storage space of the air storage cylinder (10); A brake valve (20), the brake valve (20) having an air inlet (2a) and an air outlet (2b), the air inlet (2a) being in communication with the air outlet (11); an air compressor (30), the air compressor (30) being in communication with the first air supply port (12) to provide air to the air storage cylinder (10); A brake gas recovery assembly (40), the brake gas recovery assembly (40) comprising a recovery pipeline (41), a one-way valve (42) and a gas compression device (46), one end of the recovery pipeline (41) being in communication with an exhaust port (2b) of the brake valve (20), the other end of the recovery pipeline (41) being in communication with the second air supply port (13), the one-way valve (42) and the gas compression device (46) being connected in series to the recovery pipeline (41), the one-way valve (42) being used to control the one-way flow of air discharged from the brake valve (20) into the second air supply port (13), the gas compression device (46) being used to compress the air discharged from the brake valve (20) into the air storage cylinder (10); the brake gas recovery assembly (40) further comprising: A vacuum tank (43), a vacuum pump (44) and a control valve (45), wherein the vacuum tank (43), the vacuum pump (44), the control valve (45) and the gas compression device (46) are sequentially connected in series on the recovery pipeline (41); the control valve (45) has an inlet (451), a first outlet (452) and a second outlet (453); the inlet (451) of the control valve (45) is connected to the vacuum pump (44); the first outlet (452) is connected to the gas compression device (46); the second outlet (453) is connected to the atmosphere; the control valve (45) has a first state and a second state; in the first state, the first outlet (452) is closed and the second outlet (453) is open; in the second state, the first outlet (452) is open and the second outlet (453) is closed; A first detection device, the first detection device is used to detect whether the driving motor of the vehicle is running, when the first detection device detects that the driving motor is stopped, the control valve (45) switches to the first state; when the first detection device detects that the driving motor is running, the control valve (45) switches to the second state.

2. The braking system (100) according to claim 1, characterized in that: The gas compression device (46) comprises a stator (461), a rotor (462) and blades (463); the stator (461) has a mounting cavity (4611); the rotor (462) is connected to the blades (463) and is located in the mounting cavity (4611); the rotor (462) is eccentrically arranged; a plurality of blades (463) are arranged at intervals in the circumferential direction of the rotor (462); the stator (461) is provided with an air inlet (4612) and an air outlet (4613) which are in communication with the mounting cavity (4611); the air inlet (4612) is in communication with the first outlet (452); and the air outlet (4613) is in communication with the one-way valve (42).

3. The braking system (100) according to claim 2, characterized in that: The blade (463) is connected to the rotor (462) via an elastic member (4631), and the elastic member (4631) often pushes the blade (463) to abut against the inner peripheral wall of the stator (461).

4. The braking system (100) according to claim 2, characterized in that: The gas compression device (46) further comprises a sealing end cover (464), wherein the sealing end cover (464) covers the open end of the stator (461), wherein the sealing end cover (464) and the stator (461) define the mounting cavity (4611), and the sealing end cover (464) is detachably connected to the stator (461).

5. The braking system (100) according to claim 2, characterized in that: The main shaft of the driving motor of the vehicle is connected to one end of the rotor (462) to drive the blades (463) to rotate, and the other end of the rotor (462) is connected to the transmission shaft of the vehicle.

6. The brake system (100) according to any one of claims 1 to 5, characterized in that: The recovery pipeline (41) is also provided with a protection valve (50), the protection valve (50) is connected to the brake valve (20) and the vacuum tank (43), the protection valve (50) has an air inlet end (51), a first air outlet end (52) and a second air outlet end (53), the air inlet end (51) is communicated with the exhaust port (2b) of the brake valve (20), the first air outlet end (52) is connected with the vacuum tank (43), and the second air outlet end (53) is communicated with the atmosphere, the protection valve (50) has a first mode and a second mode, in the first mode, the first air outlet end (52) is closed, and the second air outlet end (53) is opened; In the second mode, the first air outlet port (52) is open, and the second air outlet port (53) is closed.

7. The braking system (100) according to claim 6, characterized in that: Also includes: A second detection device, the second detection device is used to detect whether the vacuum pump (44) is faulty, when the second detection device detects that the vacuum pump (44) is faulty, the control valve (45) switches to the first mode; when the second detection device detects that the vacuum pump (44) is normal, the control valve (45) switches to the second mode.

8. A vehicle, characterized in that: Comprising a braking system (100) according to any one of claims 1-7.

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