CN115384468B - Braking systems and vehicles - Google Patents

Abstract

The invention discloses a braking system and a vehicle, wherein the vehicle comprises the braking system, the braking system comprises a pedal simulator, a hydraulic braking component, an electronic braking component and a controller, the controller is respectively and electrically connected with the pedal simulator, the hydraulic braking component and the electronic braking component, the pedal simulator comprises a single-cavity cylinder body, a piston, a liquid storage tank and a push rod, brake liquid is stored in the single-cavity cylinder body, the piston is movably arranged in the single-cavity cylinder body, the liquid storage tank is connected with the single-cavity cylinder body, at least part of the push rod stretches into the single-cavity cylinder body to be connected with the piston, the push rod is configured to push the piston to move, the brake liquid flows to the liquid storage tank to generate braking strokes, and the controller is used for respectively controlling the hydraulic braking component and the electronic braking component to generate braking according to the braking strokes. Therefore, the hydraulic pipelines are reduced, the arrangement of the whole vehicle framework is facilitated, and when any braking mode fails, the other braking mode can work normally, so that the vehicle is braked, and the driving safety of the vehicle is effectively improved.

Description

Braking systems and vehicles

Technical field

The present invention relates to the field of automobile braking technology, and in particular to a braking system and a vehicle.

Background technique

Modern automobiles are becoming more and more electronic, and the development of new energy vehicles has further accelerated this trend. At present, brake-by-wire systems, as a new and efficient braking system, are increasingly used in vehicles.

The brake-by-wire system is divided into electronic hydraulic brake (ElectronicHydraulicBrake, EHB) and electronic mechanical brake (ElectronicMechanicalBrake, EMB). Among them, EHB uses hydraulic pressure as the braking energy source. The generation and electronic control of hydraulic pressure are relatively difficult, and it is not easy to integrate with other electronic control systems. Moreover, the layout of a large number of brake pipelines affects the vehicle's performance. Overall layout. Compared with EHB, EMB can greatly reduce the number of hydraulic pipelines, which can greatly simplify the structure of the braking system and facilitate layout, assembly and maintenance. However, because EMB is controlled through electronic components, it is easy to fail to brake normally if it is disturbed. Influence safety hazards.

Contents of the invention

The invention provides a braking system and a vehicle.

The embodiment of the present invention provides a braking system. The braking system includes a pedal simulator, a hydraulic braking assembly, an electronic braking assembly and a controller. The controller is respectively connected with the pedal simulator, hydraulic braking assembly, The electronic braking component is electrically connected, and the pedal simulator includes:

A single-cavity cylinder, which stores brake fluid;

A piston movably arranged in the single-chamber cylinder;

A liquid storage tank is connected to the single-cavity cylinder;

a push rod that at least partially extends into the single-cavity cylinder and is connected to the piston, and the push rod is configured to push the piston to move so that the brake fluid flows to the reservoir to generate a braking stroke;

The controller is used to respectively control the hydraulic brake assembly and the electronic brake assembly to generate braking according to the braking stroke.

In this way, the braking system provides the driver with a pedal feel through the pedal simulator, and the controller controls the hydraulic braking components and electronic braking components to achieve rapid braking and precise braking of each wheel of the vehicle, using hydraulic braking and The two braking modes of electronic braking brake the vehicle simultaneously. On the one hand, it reduces the number of hydraulic pipelines and facilitates the layout of the vehicle structure. On the other hand, when any one braking method fails, the other braking method can also work normally to brake the vehicle, effectively improving the driving safety of the vehicle.

In some embodiments, the pedal simulator includes:

A first elastic return member is located in the single-cavity cylinder and is in contact with the single-cavity cylinder and the piston respectively.

In some embodiments, the push rod includes an abutting portion and a connecting portion extending from the abutting portion to the piston, the connecting portion is movably connected to the piston, and the pedal simulator further includes:

A second elastic return member is sleeved on the connecting part and contacts the single-cavity cylinder and the contact part respectively.

In some embodiments, the pedal simulator further includes:

a second hydraulic pipeline, the single-chamber cylinder is connected to the liquid storage tank through the second hydraulic pipeline;

A second control valve is provided on the second hydraulic pipeline.

In some embodiments, the hydraulic brake assembly includes a first driving member, a hydraulic pump, a third hydraulic pipeline and a hydraulic brake, and the first driving member is connected to the controller and the hydraulic pump respectively, so The hydraulic pump is also connected to the hydraulic brake through the third hydraulic pipeline;

The first driving member is configured to drive the hydraulic pump to provide brake fluid to the hydraulic brake through the third hydraulic pipeline according to the brake control signal of the controller to cause the hydraulic brake to brake.

In some embodiments, the pedal simulator further includes:

The first hydraulic pipeline is connected to the single-cavity cylinder and the hydraulic brake assembly respectively;

A first control valve is provided on the first hydraulic pipeline. The first control valve is closed when the hydraulic brake assembly and the controller are normal, and when the first driving member and/or Unicom in case of abnormality of the controller.

In some embodiments, the hydraulic brakes include multiple hydraulic brakes, and the third hydraulic pipeline includes a hydraulic main pipeline and a plurality of hydraulic branch pipelines connected to the hydraulic main pipeline, and each of the hydraulic branch pipelines is connected to a hydraulic brake. The hydraulic brake, the hydraulic main circuit is also connected to the hydraulic pump.

In some embodiments, the hydraulic brake assembly further includes a hydraulic circuit, the hydraulic circuit includes a main circuit and a plurality of branch circuits connected to the main circuit, and each of the branch circuits is connected to one of the hydraulic brakes. , the main circuit is also connected to the liquid storage tank.

In some embodiments, the hydraulic brake assembly further includes:

A third control valve is provided in the main hydraulic circuit;

A plurality of fourth control valves are respectively provided on a plurality of the hydraulic branches;

A plurality of fifth control valves are respectively provided on a plurality of the branch circuits.

In some embodiments, the hydraulic brake assembly further includes:

There are a plurality of one-way flow pipes, each of which corresponds to one of the hydraulic branch lines. One end of the one-way flow pipe is connected to the hydraulic brake, and the other end is connected to the main hydraulic line.

In some embodiments, the electronic braking assembly includes a second driving member and an electronic brake, and the second driving member is configured to drive the electronic brake to brake according to a braking control signal from the controller.

In some embodiments, both the second driving member and the electronic brake include multiple ones, and each second driving member corresponds to one electronic brake.

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

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of the drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

Figure 1 is a schematic structural diagram of a braking system according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a vehicle according to an embodiment of the present invention.

Description of main component symbols:

Vehicle 1000, braking system 100, pedal simulator 10, single-chamber cylinder 11, piston 12, reservoir 13, push rod 14, contact part 141, connection part 142, first hydraulic pipeline 15, first control Valve 151, first elastic return member 16, second elastic return member 17, second hydraulic pipeline 18, second control valve 181, hydraulic brake assembly 20, first driving member 21, hydraulic pump 22, hydraulic brake 23, Third hydraulic pipeline 24, hydraulic main circuit 241, third control valve 2411, hydraulic branch circuit 242, fourth control valve 2421, hydraulic circuit 25, main circuit 251, branch circuit 252, fifth control valve 2521, one-way flow Pipeline 26, one-way valve 261, electronic brake assembly 30, second driving component 31, electronic brake 32, controller 40.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and are not to be construed as limitations of the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " The directions indicated by "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" etc. or The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as a limitation of the present invention. In addition, the terms “first” and “second” are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, features defined as “first” and “second” may explicitly or implicitly include one or more of the described features. In the description of the present invention, "plurality" means two or more than two, unless otherwise explicitly and specifically limited.

In the description of the present invention, it should be noted that, unless otherwise clearly stated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. Connection, or integral connection; it can be mechanical connection, electrical connection or mutual communication; it can be direct connection, or indirect connection through an intermediary, it can be internal connection of two elements or interaction of two elements relation. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

In the present invention, unless otherwise expressly provided and limited, the term "above" or "below" a first feature of a second feature may include direct contact between the first and second features, or may also include the first and second features. Not in direct contact but through additional characteristic contact between them. Furthermore, the terms "above", "above" and "above" a first feature on a second feature include the first feature being directly above and diagonally above the second feature, or simply mean that the first feature is higher in level than the second feature. “Below”, “under” and “under” the first feature is the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature is less horizontally than the second feature.

The following disclosure provides many different embodiments or examples of various structures for implementing the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numbers and/or reference letters in different examples, such repetition being for purposes of simplicity and clarity and does not itself indicate a relationship between the various embodiments and/or arrangements discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

Please refer to Figures 1-2 together. The present invention provides a braking system 100 and a vehicle 1000. The vehicle 1000 includes a braking system 100. The braking system 100 includes a pedal simulator 10, a hydraulic brake assembly 20, and an electronic brake. Component 30 and controller 40. The controller 40 is electrically connected to the pedal simulator 10, the hydraulic brake component 20, and the electronic brake component 30 respectively. The pedal simulator 10 includes a single-cavity cylinder 11, a piston 12, and a liquid storage tank 13. and push rod 14. Brake fluid is stored in the single-cavity cylinder 11. The piston 12 is movably arranged in the single-cavity cylinder 11. The liquid storage tank 13 is connected to the single-cavity cylinder 11. The push rod 14 at least partially extends into the single cavity. The cylinder 11 is connected to the piston 12, and the push rod 14 is configured to push the piston 12 to move so that the brake fluid flows to the reservoir 13 to generate a braking stroke. The controller 40 is used to control the hydraulic brake assembly 20 respectively according to the braking stroke. and electronic braking assembly 30 to generate braking.

Specifically, the braking system 100 is used to brake the vehicle 1000 to decelerate or stop the vehicle 1000 . The brake system 100 is mainly composed of four parts: a pedal simulator 10, a hydraulic brake assembly 20, an electronic brake assembly 30 and a controller 40. The pedal simulator 10 is connected to the brake pedal on the vehicle 1000. The pedal simulator 100 is connected to the brake pedal of the vehicle 1000. 10 is used to provide pedal feel to the driver.

The pedal simulator 10 is composed of a single-cavity cylinder 11, a piston 12, a liquid storage tank 13 and a push rod 14. The single-cavity cylinder 11 refers to a cylinder containing only one chamber. The single-cavity cylinder 11 stores brake fluid. The brake pedal is connected to the push rod 14. When the driver steps on the brake pedal, the brake pedal drives the push rod 14. The push rod 14 pushes the piston 12 to move toward the single-cavity cylinder 11, causing the brake fluid to flow from the single-cavity cylinder 11. It flows to the fluid storage tank 13, thereby causing the push rod 14 to generate a braking stroke, providing the driver with a pedal feeling experience.

The push rod 14 is also provided with a displacement sensor. The displacement sensor is electrically connected to the controller 40 . The displacement sensor is used to detect the stroke of the push rod 14 and send a stroke signal to the controller 40 . When the driver depresses the brake pedal and the brake pedal drives the push rod 14, the displacement sensor detects the braking stroke of the push rod 14, generates a braking stroke signal and sends it to the controller 40. The controller 40 controls the push rod 14 according to the braking stroke signal. Hydraulic brake assembly 20 and electronic brake assembly 30 produce braking.

The hydraulic brake assembly 20 may be located in front of the wheel for front wheel braking, and the electronic brake assembly 30 may be located at the rear of the wheel for rear wheel braking, or the hydraulic brake assembly 20 may be disposed at the rear of the wheel. For rear wheel braking, the electronic braking assembly 30 is disposed in front of the wheel for front wheel braking. That is, the specific arrangement manner of the hydraulic braking assembly 20 and the electronic braking assembly is not limited.

The hydraulic brake assembly 20 and the electronic brake assembly 30 do not interfere with each other. For example, in some examples, the hydraulic brake assembly 20 is in a failed state. When the push rod 14 generates a braking stroke and the controller 40 receives the braking stroke signal, the controller 40 may control the electronic braking assembly 30 to brake the vehicle 1000 . move. For another example, in other examples, the electronic braking assembly 30 is in a failed state. When the push rod 14 generates a braking stroke and the controller 40 receives the braking stroke signal, the controller 40 will control the hydraulic braking assembly 20 to move the vehicle. 1000 brakes.

In this way, the braking system 100 provides the driver with a pedal feel through the pedal simulator 10, and the controller 40 controls the hydraulic braking assembly 20 and the electronic braking assembly 30 to achieve rapid braking and precise braking of each wheel of the vehicle 1000. , using two braking methods, hydraulic braking and electronic braking, to brake the vehicle 1000 times at the same time. On the one hand, it reduces the hydraulic pipeline and facilitates the layout of the vehicle structure. On the other hand, when any one of the braking methods fails, the other braking method can also work normally to brake the vehicle 1000, effectively improving the driving safety of the vehicle 1000.

Referring to FIG. 1 , in some embodiments, the pedal simulator 10 further includes a first elastic return member 16 . The first elastic return member 16 is located in the single-cavity cylinder 11 and contacts the single-cavity cylinder 11 and the piston 12 respectively.

Specifically, the first elastic return member 16 may be a spring or other element with elastic potential energy. When the driver depresses the brake pedal, the push rod 14 pushes the piston 12 so that the piston 12 presses against the first elastic return member 16. The first The elastic return member 16 produces elastic deformation. When the driver releases the brake pedal, the elastic force of the first elastic return member 16 causes the piston 12 to return to its original position.

In some examples, the first elastic return member 16 resets the piston 12, thereby causing the push rod 14 to generate a reset stroke. Furthermore, the displacement sensor located on the push rod 14 sends a reset stroke signal to the controller 40, thereby causing the hydraulic brake assembly to 20 and the electronic braking assembly 30 complete the braking work.

In other examples, the first elastic return member 16 resets the piston 12, so that the single-chamber cylinder 11 stops delivering brake fluid to the hydraulic brake assembly 20, so that the hydraulic brake assembly 20 ends the braking work.

It can be understood that the first elastic return member 16 may be one or multiple first elastic return members 16. The plurality of first elastic return members 16 constitute the brake pedal feel under different braking strokes. The specific model of the first elastic return member 16 and The quantity is not limited here.

In this way, by arranging the first elastic return member 16, on the one hand, the piston 12 can be reset, the push rod 14 can have a reset stroke, the braking can be ended, and the brake pedal can be reset without affecting the next use. On the other hand, it can provide the driver with different travel brake pedal feel.

Please refer to FIG. 1 . In some embodiments, the push rod 14 includes a contact portion 141 and a connecting portion 142 . The connecting portion 142 extends from the contact portion 141 toward the piston 12 . The connecting portion 142 is movably connected to the piston 12 . The pedal simulator 10 also includes a second elastic return member 17. The second elastic return member 17 is sleeved on the connecting portion 142 and contacts the single-cavity cylinder 11 and the abutment portion 141 respectively.

Specifically, the connecting portion 142 and the piston 12 can be movably connected by abutting or snapping. The second elastic restoring member 17 is sleeved on the connecting portion 142 . The second elastic restoring member 17 can be a spring or other element with elastic potential energy. , the second elastic return member 17 is in contact with the single-cavity cylinder 11 and the contact portion 141 respectively. When the driver depresses the brake pedal, the contact portion 141 presses the second elastic return member 17 to cause the second elastic return. The member 17 produces elastic deformation. When the second elastic return member 17 reaches the elastic limit, the connecting portion 142 will push the piston 12 to move.

It can be understood that the elastic potential energy of the second elastic restoring member 17 is smaller than the elastic potential energy of the first elastic restoring member 16, and is not specifically limited here.

In this way, by arranging the second elastic return member 17 on the connecting portion 142, the driver's brake pedal feel can be increased.

Please refer to Figure 1. In some embodiments, the pedal simulator 10 also includes a second hydraulic pipeline 18 and a second control valve 181. The single-cavity cylinder 11 is connected to the liquid storage tank 13 through the second hydraulic pipeline 18. Two control valves 181 are provided on the second hydraulic pipeline 18 .

Specifically, the second hydraulic pipeline 18 is used for brake fluid circulation, so that the brake fluid can flow from the single-chamber cylinder 11 to the fluid storage tank 13 , and the second control valve 181 is used to control the internal brake of the second hydraulic pipeline 18 . Dynamic fluid flow size.

In some examples, when the braking system 100 is in a normal state, the driver depresses the brake pedal, and the push rod 14 pushes the piston 12 to move, causing the brake fluid in the single-chamber cylinder 11 to flow into the second hydraulic pipeline 18. The dynamic fluid enters the fluid storage tank 13 through the second control valve 181. When the driver releases the brake pedal, the piston 12 is reset, and the brake fluid in the fluid storage tank 13 enters the single-chamber cylinder 11, causing brake fluid backflow.

Furthermore, the opening of the second control valve 181 is adjustable. By adjusting the opening of the second control valve 181, the flow of brake fluid in the second hydraulic pipeline 18 can be controlled, thereby achieving various pedal feel changes.

In other examples, the braking system 100 is in an abnormal state, the second control valve 181 is closed, and when the driver depresses the brake pedal, the brake fluid flows from the single-chamber cylinder 11 into the first hydraulic pipeline 15 .

In this way, by arranging the second hydraulic pipeline 18 and the second control valve 181 , on the one hand, the brake fluid can be caused to flow back between the single-chamber cylinder 11 and the fluid storage tank 13 . On the other hand, various changes in pedal feel can be achieved by adjusting the opening of the second control valve 181 to control the flow rate of the brake fluid.

Please refer to Figure 1. In some embodiments, the hydraulic brake assembly 20 includes a first driving member 21, a hydraulic pump 22, a third hydraulic pipeline 24 and a hydraulic brake 23. The first driving member 21 is connected to the controller 40 and the hydraulic brake 23 respectively. The hydraulic pump 22 is also connected to the hydraulic brake 23 through a third hydraulic pipeline 24 . The first driving member 21 is configured to drive the hydraulic pump 22 to provide brake fluid to the hydraulic brake 23 through the third hydraulic pipeline 24 according to the brake control signal of the controller 40 to brake the hydraulic brake 23 .

Specifically, the hydraulic brake assembly 20 is used to brake the left and right front wheels of the vehicle 1000. The first driving member 21 can be a motor, and there can be multiple hydraulic brakes 23. The hydraulic brakes 23 are connected with the wheels. The left front wheel and The right front wheels are respectively connected to a hydraulic brake 23. When the driver depresses the brake pedal, the push rod 14 generates a braking stroke, and the displacement sensor sends a braking control signal corresponding to the braking stroke to the controller 40. The controller 40 controls the first driving member according to the braking control signal. 21, thereby driving the hydraulic pump 22 to provide brake fluid to the hydraulic brake 23 through the third hydraulic pipeline 24 to brake the left front wheel and the right front wheel.

In some examples, there may be multiple first driving members 21 , and each first driving member 21 is connected to a hydraulic brake 23 . For example, there may be two first driving members 21 and two hydraulic brake assemblies 20 respectively. The vehicle 1000 The left front wheel and the right front wheel are respectively connected to a hydraulic brake assembly 20. The controller 40 controls the two first driving members 21 to pressurize the brake fluid and make the brake fluid flow to the hydraulic brake assembly 20, thereby The left front wheel and right front wheel can be controlled separately to generate braking.

It should be noted that the hydraulic pump 22 is connected to the fluid storage tank 13. When the hydraulic pump 22 participates in braking, the brake fluid flows out, and the fluid storage tank 13 will replenish the brake fluid to the hydraulic pump 22, thereby ensuring the continuation of hydraulic braking. . A one-way valve 261 is provided between the hydraulic pump 22 and the fluid storage tank 13 so that the brake fluid can flow in one direction from the fluid storage tank 13 to the hydraulic pump 22 .

In this way, the controller 40 can control the first driving member 21 to drive the hydraulic pump 22 to output the brake fluid amount corresponding to the braking stroke signal, thereby controlling the hydraulic brake 23 located at the wheel to brake the wheel.

Referring to FIG. 1 , in some embodiments, the pedal simulator 10 further includes a first hydraulic pipeline 15 and a first control valve 151 . The first hydraulic pipeline 15 is connected to the single-chamber cylinder 11 and the hydraulic brake assembly 20 respectively. The first control valve 151 is provided on the first hydraulic pipeline 15 . The first control valve 151 is between the hydraulic brake assembly 20 and the controller 40 It is closed under normal circumstances, and connected when the first driving member 21 and/or the controller 40 are abnormal.

Specifically, the first hydraulic pipeline 15 is used to circulate brake fluid so that the brake fluid can flow from the single-chamber cylinder 11 to the hydraulic brake assembly 20. The first control valve 151 is located on the first hydraulic pipeline 15. A control valve 151 is used to control the opening and closing of the first hydraulic pipeline 15 .

It can be understood that the controller 40 , the hydraulic brake assembly 20 and the electronic brake assembly 30 contain electronic components. When the electronic components are disturbed and fail, the vehicle 1000 cannot be braked, thereby affecting driving safety.

In some examples, the braking system 100 is in a normal state, the first control valve 151 is closed, the single-chamber cylinder 11 is disconnected from the hydraulic brake assembly 20 , and the brake fluid cannot flow to the hydraulic brake through the first hydraulic pipeline 15 . Moving component 20. When at least one of the controller 40 and the first driving part 21 fails, the braking system 100 is in an abnormal state, the first control valve 151 is opened, and when the driver steps on the brake pedal, the push rod 14 pushes the brake fluid to self-discharge. The flow out of the chamber cylinder 11 flows to the hydraulic brake 23 through the first hydraulic pipeline 15, thereby braking the left front wheel and the right front wheel of the vehicle 1000.

In this way, by arranging the first hydraulic pipeline 15 and the first control valve 151 and connecting the first hydraulic pipeline 15 to the hydraulic brake 23 and the single-chamber cylinder 11 respectively, the vehicle 1000 can operate between the controller 40 and the first driving member 21 When at least one item fails, the single-cavity cylinder 11 can provide an amount of brake fluid that meets the braking and deceleration requirements to the hydraulic brake 23 , thereby decelerating or stopping the vehicle 1000 and improving the driving safety of the vehicle 1000 .

Please refer to Figure 1. In some embodiments, the hydraulic brake 23 includes multiple third hydraulic pipelines 24 including a hydraulic main pipeline 241 and a plurality of hydraulic branch pipelines 242 connected to the hydraulic main pipeline 241. Each hydraulic branch pipeline 242 is connected to a hydraulic brake 23, and the hydraulic main circuit 241 is also connected to the hydraulic pump 22.

Specifically, the third hydraulic pipeline 24 is used for the circulation of brake fluid. The hydraulic main pipeline 241 is connected to the hydraulic pump 22 and the hydraulic branch pipeline 242 respectively. The hydraulic branch pipeline 242 includes a plurality of hydraulic branch pipelines 242. The plurality of hydraulic branch pipelines 242 are respectively connected to the hydraulic main pipeline. 241 and one hydraulic brake 23. For example, there can be two hydraulic brakes 23 and two hydraulic branch circuits 242. The brake fluid flows out from the hydraulic pump 22 into the hydraulic main circuit 241, and the brake fluid is diverted in the hydraulic main circuit 241. It enters two hydraulic branches 242 respectively, thereby flowing to two hydraulic brakes 23, so that the two hydraulic brakes 23 brake the left front wheel and the right front wheel respectively.

It can be understood that the plurality of hydraulic branches 242 are also connected to the first hydraulic pipeline 15. When the braking system 100 is in an abnormal state, the brake fluid flows from the first hydraulic pipeline 15 to some of the hydraulic branches 242, thereby entering the brake system 100. The hydraulic brake 23 performs braking.

In this way, by arranging multiple hydraulic brakes 23 and multiple hydraulic branches 242, on the one hand, rapid braking and precise braking of the left front wheel and right front wheel of the vehicle 1000 can be achieved. On the other hand, when one of the hydraulic brakes 23 fails, the other hydraulic brake 23 can also work normally to brake the vehicle 1000, which effectively improves the driving safety of the vehicle 1000.

Please refer to Figure 1. In some embodiments, the hydraulic brake assembly 20 also includes a hydraulic circuit 25. The hydraulic circuit 25 includes a main circuit 251 and a plurality of branch circuits 252 connected to the main circuit 251. Each branch circuit 252 is connected to a Hydraulic brake 23, the main circuit 251 is also connected to the liquid storage tank 13.

Specifically, the hydraulic circuit 25 is used for brake fluid circulation. The main circuit 251 is connected to multiple branch circuits 252 and the liquid storage tank 13. The multiple branch circuits 252 are respectively connected to multiple hydraulic brakes 23 and the main circuit 251. When the brake fluid enters After multiple hydraulic brakes 23 participate in braking the vehicle 1000, the brake fluid will enter the main circuit 251 through the multiple branch circuits 252, and return to the fluid storage tank 13 from the main circuit 251.

In this way, by providing the hydraulic circuit 25, the brake fluid can flow back to the fluid storage tank 13 after participating in the braking of the hydraulic brake 23, forming a brake fluid circulation.

Referring to FIG. 1 , in some embodiments, the hydraulic brake assembly 20 further includes a third control valve 2411 , a plurality of fourth control valves 2421 and a plurality of fifth control valves 2521 . The third control valve 2411 is provided in the main hydraulic circuit 241 , and the plurality of fourth control valves 2421 are respectively provided in the plurality of hydraulic branch circuits 242 . The plurality of fifth control valves 2521 are respectively provided on the plurality of branch circuits 252.

Specifically, the third control valve 2411 is used to control the hydraulic main circuit 241 to be on-off, the fourth control valve 2421 is used to control the hydraulic branch circuit 242 to be on-off, and the fifth control valve 2521 is used to control the branch circuit 252 to be on-off.

In some examples, the braking system 100 is in a normal state, and the third control valve 2411, the plurality of fourth control valves 2421, and the plurality of fifth control valves 2521 are all in the open state. When the braking system 100 takes braking measures, The brake fluid provided by the hydraulic pump 22 enters the plurality of fourth control valves 2421 respectively through the third control valve 2411. After the brake fluid participates in the braking of the hydraulic brake 23, it flows into the plurality of fifth control valves 2521 respectively, thereby returning to the liquid storage. Can 13.

It should be noted that the braking force generated by the hydraulic brake 23 is determined by the flow rate of the brake fluid. The greater the flow rate of the brake fluid, the greater the braking force generated by the hydraulic brake 23. By adjusting the openings of the plurality of fourth control valves 2421 and the plurality of fifth control valves 2521 to control the flow of brake fluid, the braking force of the left front wheel and the right front wheel can be adjusted respectively.

In other examples, when the braking system 100 is in an abnormal state, the third control valve 2411 and the plurality of fifth control valves 2521 are closed, and the plurality of fourth control valves 2421 are opened. When the driver depresses the brake pedal, the brake pedal The hydraulic fluid flows from the single-chamber cylinder 11 to the plurality of fourth control valves 2421 respectively, and flows to the hydraulic brake 23 through the fourth control valves 2421, thereby generating braking.

In this way, by arranging the third control valve 2411, the plurality of fourth control valves 2421 and the plurality of fifth control valves 2521, on the one hand, the flow of brake fluid to the hydraulic brake 23 and backflow can be controlled. On the other hand, the braking force of the left front wheel and the right front wheel can be adjusted by adjusting the opening degrees of the plurality of fourth control valves 2421 and the plurality of fifth control valves 2521 .

Please refer to Figure 1. In some embodiments, the hydraulic brake assembly 20 also includes a plurality of one-way flow pipes 26, each one-way flow pipe 26 corresponds to a hydraulic branch 242, and the one-way flow pipe 26 One end is connected to the hydraulic brake 23, and the other end is connected to the hydraulic main circuit 241.

Specifically, the one-way flow pipe 26 is used for the one-way flow of brake fluid. The number of the one-way flow pipe 26 is the same as the number of the hydraulic branches 242. Each one-way flow pipe 26 is connected to a hydraulic brake 23 and The hydraulic main circuit 241 is used for brake fluid to flow from the hydraulic main circuit 241 to the hydraulic brake 23 through the one-way flow pipe 26 .

In some examples, a pressure sensor may be provided on the hydraulic brake 23. During the hydraulic braking process, when the pressure sensor detects that the pressure of the hydraulic brake 23 does not meet the braking requirements and the opening of the fourth control valve 2421 reaches the limit, The hydraulic pump 22 can be controlled to increase the brake fluid flow, and the brake fluid flows from the hydraulic main circuit 241 to the hydraulic brake 23 through the one-way flow pipe 26 to increase the pressure of the hydraulic brake 23 to meet the braking demand.

It can be understood that after the brake fluid participates in the braking of the hydraulic brake 23, the brake fluid will flow back. The one-way circulation pipeline 26 is provided with a one-way valve 261. The one-way valve 261 can ensure the one-way circulation of the brake fluid and prevent The brake fluid returns to the hydraulic main circuit 241.

In this way, by arranging multiple one-way flow pipes 26, when the pressure of the hydraulic brake 23 does not meet the braking requirements, the brake fluid can flow to the hydraulic brake 23 through the one-way flow pipes 26. By increasing the amount of brake fluid flow, thereby increasing the braking pressure of the hydraulic brake 23 to meet the braking demand and improve driving safety.

Referring to FIG. 1 , in some embodiments, the electronic braking assembly 30 includes a second driving member 31 and an electronic brake 32 . The second driving member 31 is configured to drive the electronic brake 32 according to the braking control signal of the controller 40 . move.

Specifically, the second driving member 31 may be a motor, and the controller 40 may drive the electronic brake 32 by controlling the second driving member 31. The electronic brake 32 is located at the left rear wheel and the right rear wheel. The electronic brake 32 is used for the left rear of the vehicle 1000. When the controller 40 receives the braking stroke signal, the controller 40 controls the second driving member 31 to provide the electronic brake 32 with a braking force corresponding to the braking stroke signal, so that the electronic brake 32 Brake the left and right rear wheels.

In this way, by arranging the second driving member 31 and the electronic brake 32, when the hydraulic brake 23 fails, the electronic brake 32 can be used to brake the vehicle 1000, which effectively improves the driving safety of the vehicle 1000.

Please refer to FIG. 1 . In some embodiments, there are multiple second driving members 31 and electronic brakes 32 , and each second driving member 31 corresponds to one electronic brake 32 .

Specifically, both the second driving member 31 and the electronic brake 32 include multiple ones. The plurality of electronic brakes 32 are respectively located at the left rear wheel and the right rear wheel. Each electronic brake 32 is connected to a corresponding second driving member 31. The controller 40 can By controlling the plurality of second driving members 31, the plurality of electronic brakes 32 are driven to brake corresponding wheels respectively. For example, there may be two electronic brakes 32. The two electronic brakes 32 are respectively connected to the left rear wheel and the right rear wheel of the vehicle 1000. The controller 40 provides braking force for the two electronic brakes 32 by controlling the two second driving members 31. The two electronic brakes 32 are driven to brake the left rear wheel and the right rear wheel respectively.

In this way, by arranging a plurality of second driving members 31 and a plurality of electronic brakes 32, rapid and precise braking of the left rear wheel and the right rear wheel of the vehicle 1000 can be achieved.

In the description of this specification, reference to the terms "one embodiment," "certain embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the description in conjunction with the terms The specific features, structures, materials or characteristics described in the above embodiments or examples are included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and purposes of the invention. The scope of the invention is defined by the claims and their equivalents.

Claims (9)

1. A braking system, characterized in that it includes a pedal simulator, a hydraulic braking assembly, an electronic braking assembly and a controller, and the controller is connected to the pedal simulator, the hydraulic braking assembly, the electronic braking assembly respectively. The components are electrically connected, and the pedal simulator includes: A single-cavity cylinder, which stores brake fluid; A piston movably arranged in the single-chamber cylinder; A liquid storage tank is connected to the single-cavity cylinder; a push rod that at least partially extends into the single-cavity cylinder and is connected to the piston, and the push rod is configured to push the piston to move so that the brake fluid flows to the reservoir to generate a braking stroke; The controller is used to respectively control the hydraulic brake assembly and the electronic brake assembly to generate braking according to the braking stroke; The hydraulic brake assembly includes a first driving member, a hydraulic pump, a third hydraulic pipeline and a hydraulic brake. The first driving member is connected to the controller and the hydraulic pump respectively. The hydraulic pump also passes through the A third hydraulic pipeline is connected to the hydraulic brake; The first driving member is configured to drive the hydraulic pump to provide brake fluid to the hydraulic brake through the third hydraulic pipeline according to the brake control signal of the controller to cause the hydraulic brake to brake; The pedal simulator also includes: The first hydraulic pipeline is connected to the single-cavity cylinder and the hydraulic brake assembly respectively; A first control valve is provided on the first hydraulic pipeline. The first control valve is closed when the hydraulic brake assembly and the controller are normal, and when the first driving member and/or Unicom in case of abnormality of the controller; The hydraulic brakes include multiple, the third hydraulic pipeline includes a hydraulic main pipeline and a plurality of hydraulic branch pipelines connected to the hydraulic main pipeline, each of the hydraulic branch pipelines is connected to one of the hydraulic brakes, and the The main hydraulic circuit is also connected to the hydraulic pump; The hydraulic brake assembly also includes: There are a plurality of one-way flow pipes, each of which corresponds to one of the hydraulic branch lines. One end of the one-way flow pipe is connected to the hydraulic brake, and the other end is connected to the main hydraulic line. 2. The braking system of claim 1, wherein the pedal simulator includes: A first elastic return member is located in the single-cavity cylinder and is in contact with the single-cavity cylinder and the piston respectively. 3. The braking system according to claim 1, wherein the push rod includes a contact portion and a connecting portion extending from the contact portion to the piston, and the connecting portion is movable with the piston. Connected, the Pedal Simulator also includes: A second elastic return member is sleeved on the connecting part and contacts the single-cavity cylinder and the contact part respectively. 4. The braking system of claim 1, wherein the pedal simulator further includes: a second hydraulic pipeline, the single-chamber cylinder is connected to the liquid storage tank through the second hydraulic pipeline; A second control valve is provided on the second hydraulic pipeline. 5. The braking system according to claim 1, wherein the hydraulic brake assembly further includes a hydraulic circuit, the hydraulic circuit includes a main circuit and a plurality of branch circuits connected to the main circuit, each of which The branch circuit is connected to one of the hydraulic brakes, and the main circuit is also connected to the liquid storage tank. 6. The braking system of claim 5, wherein the hydraulic braking assembly further includes: A third control valve is provided in the main hydraulic circuit; A plurality of fourth control valves are respectively provided on a plurality of the hydraulic branches; A plurality of fifth control valves are respectively provided on a plurality of the branch circuits. 7. The braking system of claim 1, wherein the electronic braking assembly includes a second driving member and an electronic brake, the second driving member being configured to control braking according to the controller. The signal drives the electronic brake to brake. 8. The braking system according to claim 7, wherein the second driving member and the electronic brake each include a plurality of second driving members, and each second driving member corresponds to one electronic brake. 9. A vehicle, characterized by comprising the braking system according to any one of claims 1-8.