Brake structure, brake assembly, control method of brake assembly and vehicle

Abstract

The invention discloses a brake structure, a brake assembly, a control method of the brake assembly and a vehicle. The brake device comprises a brake disc and two brake motors, at least part of the brake disc is located between the two brake motors, each brake motor is provided with a brake pad, and the brake pads of the two brake motors are suitable for being selectively clamped to the two sides of the brake disc. According to the brake structure, the response speed is high, more accurate brake control can be achieved, the shorter brake distance is achieved, and the high-order automatic driving requirement is met.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle manufacturing, and particularly to a brake structure, a brake assembly having the brake structure, a control method of the brake assembly, and a vehicle having the brake assembly. Background Art

[0002] In the related art, an electro-hydraulic braking system is mostly adopted in the brakes of vehicles. The hydraulic system has a complex structure, which makes it difficult to arrange the components of the braking system. Moreover, there is a delay in braking response and low braking efficiency. The hydraulic oil needs to be replaced regularly, and there is also a risk of hydraulic oil leakage, which is not environmentally friendly. When the brake is damaged, it is not easy to repair and disassemble. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present invention provides a brake structure. The brake structure has a fast response speed, can achieve more precise braking control, achieve a shorter braking distance, and meet the requirements of high-level autonomous driving.

[0004] According to an embodiment of the present invention, the brake structure includes: a brake disc; two brake motors, at least a part of the brake disc is located between the two brake motors, each brake motor is provided with a brake pad, and the brake pads of the two brake motors are adapted to selectively clamp on both sides of the brake disc.

[0005] According to the brake structure of the embodiment of the present invention, by setting two brake motors to directly control the two brake pads to selectively clamp on both sides of the brake disc, the braking or braking release of the vehicle is realized. The brake structure cancels the hydraulic system of the current electro-hydraulic braking system, simplifies the mechanical structure of the braking system, has a simpler structure, simplifies the difficulty of arranging the components of the braking system, and has a lower cost. Since there is no hydraulic system and connecting brake pipelines, and it is directly controlled by two brake motors, it has a small volume, stable operation, and simple maintenance. There is no hydraulic oil pipeline, so there is no problem of hydraulic oil leakage, and the response speed is faster. It can achieve more precise braking control and achieve a shorter braking distance, meeting the requirements of high-level autonomous driving.

[0006] According to some embodiments of the present invention, the brake motor is configured as a linear motor, and the linear motor is used to drive the corresponding brake pad to move linearly; the brake pads of the two linear motors are adapted to approach or move away from each other to selectively clamp the brake disc.

[0007] According to some embodiments of the present invention, the brake pads of the two brake motors are distributed opposite to each other in the thickness direction of the brake disc; and / or, the brake pads of the two brake motors are configured to move synchronously.

[0008] The brake structure according to some embodiments of the present invention further includes a motor housing, and both of the two brake motors are installed in the motor housing, and at least part of the brake disc is located in the motor housing; and / or, it further includes a knuckle, and the brake disc is rotatably connected to the knuckle.

[0009] The present invention also provides a braking assembly.

[0010] The braking assembly according to an embodiment of the present invention includes a control unit and the brake structure according to any one of the above embodiments. The control unit is electrically connected to the brake motor, and the control unit is configured to control the brake motor to drive the brake pads to move.

[0011] The braking assembly according to some embodiments of the present invention further includes a brake pedal assembly and a first detection assembly. The first detection assembly is configured to detect the braking action of the brake pedal assembly and output a braking signal, and the control unit is configured to control the brake motor according to the braking signal.

[0012] The braking assembly according to some embodiments of the present invention, the brake pedal assembly includes a brake pedal, the first detection assembly includes a braking force sensor, the braking force sensor is installed on the brake pedal, and the braking force sensor is configured to output a braking force signal of the brake pedal to the control unit; and / or, the brake pedal assembly includes a brake pedal arm, the first detection assembly includes a displacement sensor, and the displacement sensor is configured to output a braking displacement signal of the brake pedal arm to the control unit.

[0013] The braking assembly according to some embodiments of the present invention further includes a second detection assembly, the second detection assembly is connected to the brake disc, and is configured to detect the rotation state of the brake disc and output a rotation speed signal, and the control unit selectively controls the brake motor according to the rotation speed signal after the brake pads are braked.

[0014] The braking assembly according to some embodiments of the present invention, there are multiple brake structures, and the brake motors of the multiple brake structures are all electrically connected to the control unit.

[0015] The present invention also provides a control method for a braking assembly.

[0016] The control method for a braking assembly according to an embodiment of the present invention, the control method uses the braking assembly according to any one of the above embodiments, and the control method includes: obtaining a braking signal of the brake pedal assembly; according to the braking signal, controlling the two brake motors of the brake structure to drive the corresponding brake pads to selectively brake the brake disc.

[0017] A control method for a brake assembly according to some embodiments of the present invention, the control method further comprising: after the brake disc is braked, obtaining a rotation signal of the brake disc; obtaining an actual braking force according to the rotation signal; and performing feedback control on a brake pad of the brake motor according to the actual braking force and a target braking force.

[0018] According to a control method for a brake assembly according to some embodiments of the present invention, the obtaining of a braking signal of a brake pedal assembly includes: obtaining a braking force signal of the brake pedal; and obtaining a braking displacement signal of a brake pedal arm.

[0019] The present invention also provides a vehicle.

[0020] The vehicle according to an embodiment of the present invention includes the brake assembly described in any one of the above embodiments.

[0021] The advantages of the brake assembly, the control method of the brake assembly, the vehicle, and the above-described brake structure over the prior art are the same and will not be elaborated herein.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1 is a schematic diagram of the principle of a brake assembly according to an embodiment of the present invention;

[0025] Figure 2 is a schematic structural diagram of a brake structure according to an embodiment of the present invention Figure 1 ;

[0026] Figure 3 is a schematic structural diagram of a brake structure according to an embodiment of the present invention Figure 2 ;

[0027] Figure 4 is Figure 3 a cross-sectional view taken at A-A;

[0028] Figure 5 is a logic flow of a brake assembly according to an embodiment of the present invention Figure 1 ;

[0029] Figure 6 is a logic flow of a brake assembly according to an embodiment of the present invention Figure 2 .

[0030] Reference Signs:

[0031] Brake assembly 1000,

[0032] Brake structure 100,

[0033] Brake disc 1, brake motor 2, brake pad 21, secondary cylinder block 22, primary 23,

[0034] Motor housing 3, knuckle 4, control unit 5, brake pedal 61, brake pedal force arm 62, brake force sensor 71, displacement sensor 72, second detection component 8, wheel hub unit assembly 91, wheel hub bearing 92, pedal feel simulator 93, signal acquisition wire harness 94, signal control wire harness 95. Detailed implementation manners

[0035] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0036] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly defined and limited, the terms "mounted", "connected" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements. 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.

[0038] Reference is made below to Figures 1 - 6Describe a brake structure 100 according to an embodiment of the present invention. The brake structure 100 has a fast response speed, can achieve more precise braking control, achieve a shorter braking distance, and meet the requirements of high-level autonomous driving.

[0039] As Figures 1 - 6 shown, a brake structure 100 according to an embodiment of the present invention includes a brake disc 1 and two brake motors 2.

[0040] The brake disc 1 is a key structural component in the vehicle's braking system. The brake disc 1 can contact the brake pads 21 to generate a frictional force, thereby generating a braking force, converting the kinetic energy of the vehicle into heat energy, and thus achieving deceleration or stopping.

[0041] The two brake motors 2 are used to provide power to generate a braking force. At least part of the brake disc 1 is located between the two brake motors 2. Each brake motor 2 is provided with a brake pad 21, and the brake pads 21 of the two brake motors 2 are adapted to selectively clamp on both sides of the brake disc 1.

[0042] That is to say, a brake pad 21 is respectively arranged on the two brake motors 2, so that the two brake motors 2 can provide power for their respective brake pads 21 to drive the two brake pads 21 to move closer to or away from the brake disc 1 to achieve braking or release of the vehicle. The brake pads 21 of the two brake motors 2 can be respectively arranged on both sides of the brake disc 1. In this way, under the drive of the two brake motors 2, the two brake pads 21 can move simultaneously to approach the brake disc 1 and contact the brake disc 1, and clamp the brake disc 1, so that the moving speed of the brake disc 1 is reduced or it cannot move, thereby achieving braking of the vehicle. The two brake pads 21 can also move simultaneously to loosen and move away from the brake disc 1, so that the brake disc 1 can move, thereby achieving release of the vehicle's braking.

[0043] Thus, by setting two brake motors 2 to directly control the two brake pads 21 to selectively clamp on both sides of the brake disc 1 to achieve braking or release of the vehicle, the brake structure 100 cancels the hydraulic system of the current electronic hydraulic braking system, simplifies the mechanical structure of the braking system, has a simpler structure, and simplifies the difficulty of arranging the components of the braking system, with a lower cost. Since there is no hydraulic system and connecting brake pipelines, it is directly controlled by two brake motors 2, with a small volume, stable operation, simple maintenance, no hydraulic oil pipelines, no problem of hydraulic oil leakage, and a faster response speed, can achieve more precise braking control, achieve a shorter braking distance, and meet the requirements of high-level autonomous driving.

[0044] In some embodiments, the brake motor 2 is configured as a linear motor, and the linear motor is used to drive the corresponding brake pad 21 to move linearly.

[0045] Specifically, a linear motor can directly convert electrical energy into linear motion mechanical energy without an intermediate transmission mechanism. It directly drives a load through electromagnetic force to achieve linear motion. The linear motor features high precision, high speed, high acceleration, and a compact structure.

[0046] The linear motor includes a primary 23 (mover) and a secondary (stator). The primary 23 is the part that generates a magnetic field or induced current in the linear motor, and the secondary is a component that is stationary or in relative motion with respect to the primary. The relative motion between the primary and the secondary converts mechanical energy and electrical energy into each other, with higher transmission efficiency. As Figure 2 shown, the primary 23 can be composed of multiple sets of windings, and the secondary can also be composed of multiple sets of windings. Through the interaction between multiple sets of primary 23 windings and multiple sets of secondary windings, an electromagnetic force is formed to achieve the linear motion of the brake pad 21. Among them, the secondary can be arranged inside the secondary cylinder block 22, and the secondary is stably supported by the secondary cylinder block 22 to ensure that the secondary can perform stable linear motion to drive the brake pad 21 to perform stable linear motion.

[0047] Thus, by configuring the two brake motors 2 as linear motors to drive the respective brake pads 21 of the linear motors to move linearly, the two brake pads 21 can quickly contact the brake disc 1 to achieve braking, reducing the braking distance. Therefore, the braking efficiency is higher, the response speed is faster, and the brake motor 2 is convenient for maintenance, with a simpler structure and a longer service life.

[0048] In practice, as Figure 2 shown, when current flows into the primary 23 (mover) through the high-voltage wire respectively, the DC voltage drives the chip of the H-bridge of the linear motor, changing the current direction through the mos on the H-bridge, making Figure 2 the S and N in constantly change, thereby driving the secondary cylinder block 22 to move, so as to push the brake pad 21 to perform linear motion to contact the brake disc 1 for braking.

[0049] Furthermore, the brake pads 21 of the two linear motors are adapted to approach or move away from each other to selectively clamp the brake disc 1.

[0050] That is to say, when the vehicle needs to decelerate or stop, the two linear motors can drive their respective brake pads 21 to perform linear motion, and the brake pads 21 of the two linear motors move towards each other to gradually approach the brake disc 1 and contact and clamp the brake disc 1, thereby achieving vehicle braking. Correspondingly, when the vehicle needs to drive normally, the two linear motors can drive their respective brake pads 21 to perform linear motion, and the brake pads 21 of the two linear motors move away from each other to leave the brake disc 1 and gradually move away from the brake disc 1, thereby achieving the release of vehicle braking.

[0051] In some embodiments, the brake pads 21 of the two braking motors 2 are distributed opposite to each other in the thickness direction of the brake disc 1.

[0052] Specifically, the brake disc 1 can rotate following the wheel. The thickness direction of the brake disc 1 is the axial direction of the brake disc 1, that is, the direction perpendicular to the rotation plane of the brake disc 1. By distributing the brake pads 21 of the two braking motors 2 opposite to each other in the thickness direction of the brake disc 1, as Figure 4 shown, that is, the two brake pads 21 are respectively located on both sides of the brake disc 1 in the thickness direction and are parallelly distributed, so that the brake disc 1 is clamped between the two brake pads 21. Thus, bilateral braking is formed, enabling the two brake pads 21 on both sides to simultaneously clamp the brake disc 1 for frictional braking, causing the brake disc 1 to decelerate and finally stopping the vehicle.

[0053] Thus, braking is achieved by simultaneously clamping the brake disc 1 with the two brake pads 21 on both sides. Compared with the braking of a single brake pad 21, the frictional force can be significantly increased, the braking distance can be shortened, the braking efficiency can be improved, and the bilateral symmetric force application can avoid excessive unilateral force on the brake disc 1, reducing the risk of uneven wear, thereby extending the service life of the brake disc 1, and can maintain the balance of both sides of the brake disc 1, reducing the jitter or deviation during braking and improving the braking stability.

[0054] In some embodiments, the brake pads 21 of the two braking motors 2 are configured to move synchronously.

[0055] That is to say, the brake pads 21 of the two braking motors 2 move at the same speed and displacement during the braking process to ensure that the two brake pads 21 can contact the brake disc 1 simultaneously and with the same amplitude. Thus, the two brake pads 21 can simultaneously and evenly apply pressure to the brake disc 1, enabling the brake disc 1 to be evenly stressed, improving the braking smoothness, and can provide a consistent braking force, shortening the braking distance, thereby improving the braking response speed and braking efficiency.

[0056] In some embodiments, the brake assembly 1000 further includes a motor housing 3. The two braking motors 2 are both installed inside the motor housing 3, and at least part of the brake disc 1 is located inside the motor housing 3.

[0057] Specifically, as Figure 1 、 Figure 2 and Figure 4As shown, the brake assembly 1000 further includes a motor housing 3, and two brake motors 2 are both installed inside the motor housing 3 to protect the two brake motors 2 from being eroded and damaged by the external environment, so as to ensure the stable operation of the two brake motors 2. Among them, at least part of the brake disc 1 is located inside the motor housing 3, that is, a part of the structure of the brake disc 1 can be installed or integrated into the motor housing 3, so as to facilitate the two brake motors 2 to drive their respective brake pads 21 to control the brake disc 1, shortening the force transmission path between the brake pads 21 and the brake disc 1, improving the braking response speed, and a part of the structure of the brake disc 1 shares space with the motor housing 3, reducing the occupied space and radial dimension of the brake structure 100, and improving the structural compactness of the brake structure 100.

[0058] In actual design, the brake pads 21 of the two brake motors 2 can be fixed to the motor housing 3 through connecting parts such as circlips or screws or bolts to ensure the installation stability of the brake pads 21.

[0059] In some embodiments, the brake assembly 1000 further includes a knuckle 4, and the brake disc 1 is rotatably connected to the knuckle 4.

[0060] Specifically, as Figure 1 、 Figure 3 and Figure 4 shown, the brake assembly 1000 further includes a knuckle 4, and the knuckle 4 is used to support the wheels, transmit loads, achieve steering and wheel alignment to ensure that the vehicle can drive and steer stably. As Figure 1 shown, the brake disc 1 can be rotatably connected to the knuckle 4 through the hub bearing 92 in the hub unit assembly 91. The hub bearing 92 can be installed inside the knuckle 4 so that relative rotation can occur between the hub bearing 92 and the knuckle 4. The hub unit assembly 91 as a whole can be connected to the knuckle 4 by bolts or screws, and the brake disc 1 can be connected to the hub unit assembly 91 through connecting parts such as studs and screws. Thus, the rotational connection between the brake disc 1 and the knuckle 4 is realized, and then the braking force can be transmitted from the brake disc 1 to the knuckle 4, shortening the braking distance, ensuring the efficient transmission of the braking force, and then transmitting it to the vehicle frame to achieve the rapid braking of the vehicle.

[0061] In actual design, the knuckle 4 can also be connected and fixed to the upper and lower swing arms and the steering tie rod through a bushing and ball joint structure, and the motor housing 3 can be connected to the knuckle 4 by bolts or screws. Thus, the overall stability and reliability of the brake structure 100 are ensured, and it can work stably.

[0062] The present invention also proposes a brake assembly 1000.

[0063] The brake assembly 1000 according to an embodiment of the present invention includes a control unit 5 and the brake structure 100 of any one of the above embodiments. The control unit 5 is electrically connected to the brake motor 2, and the control unit 5 is configured to control the brake motor 2 to drive the brake pad 21 to move.

[0064] Specifically, as Figure 1 shown, the brake assembly 1000 includes a control unit 5. The control unit 5 can be a vehicle ECU. The control unit 5 is electrically connected to the brake motor 2, that is, the control unit 5 can transmit electrical signals or currents to and from the brake motor 2. During braking, the control unit 5 can send a braking control signal to the brake motor 2. After receiving the braking control signal, the brake motor 2 is controlled to start moving so that the secondary of the linear motor can push the brake pad 21 to move.

[0065] In some embodiments, the brake assembly 1000 further includes a brake pedal assembly and a first detection assembly. The first detection assembly is configured to detect the braking action of the brake pedal assembly and output a braking signal, and the control unit 5 is configured to control the brake motor 2 according to the braking signal.

[0066] Specifically, as Figure 1 shown, the brake assembly 1000 further includes a brake pedal assembly and a first detection assembly. The brake pedal assembly is configured to receive the pedal action of the driver, that is, the braking action. The first detection assembly can detect the braking action of the brake pedal assembly and convert the braking action into an electrical signal, that is, a braking signal, and transmit the braking signal to the control unit 5. After receiving the braking signal, the control unit 5 controls the brake motor 2 according to the braking signal to achieve braking or release of braking.

[0067] In some embodiments, the brake pedal assembly includes a brake pedal 61, and the first detection assembly includes a braking force sensor 71. The braking force sensor 71 is installed on the brake pedal 61, and the braking force sensor 71 is configured to output a braking force signal of the brake pedal 61 to the control unit 5.

[0068] Specifically, as Figure 1 shown, the brake pedal assembly includes a brake pedal 61. The driver can step on the brake pedal 61 to perform a braking action, that is, the brake pedal 61 is a structural component for the driver to directly perform a braking action. The first detection assembly includes a braking force sensor 71. The braking force sensor 71 is installed on the brake pedal 61 to facilitate real-time detection of the magnitude of the braking force of the braking action. After the driver steps on the brake pedal 61, the braking force sensor 71 can convert the braking force into an electrical signal, that is, a braking force signal, and transmit it to the control unit 5. After receiving the braking force signal, the control unit 5 can analyze and calculate the received braking force signal, and determine the movement displacement of the brake pad 21 of the brake motor 2 based on the magnitude of the braking force.

[0069] In some other embodiments, the brake pedal 61 assembly includes a brake pedal force arm 62, and the first detection assembly includes a displacement sensor 72. The displacement sensor 72 is configured to output a brake displacement signal of the brake pedal force arm 62 to the control unit 5.

[0070] Specifically, as Figure 1 shown, the brake pedal 61 assembly includes a brake pedal force arm 62, and the first detection assembly includes a displacement sensor 72. The displacement sensor 72 is used to detect the displacement data of the brake pedal 61 in real time, that is, the magnitude of the brake displacement of the brake pedal force arm 62. After the driver steps on the brake pedal 61, the displacement sensor 72 can convert the brake displacement into an electrical signal, i.e., a brake displacement signal, and transmit it to the control unit 5. After receiving the brake displacement signal, the control unit 5 can analyze and calculate the received brake displacement signal, and determine the movement displacement of the brake pad 21 of the brake motor 2 based on the magnitude of the brake displacement.

[0071] In actual design, as Figure 1 shown, a pedal feel simulator 93 can be set to convert and feedback the pedal feel of the driver's pedal stepping behavior. During the stepping process, the displacement sensor 72 and the braking force sensor 71 can transmit the braking force signal and the brake displacement signal of the pedal feel curve to the control unit 5.

[0072] In some embodiments, the brake assembly 1000 further includes a second detection assembly 8. The second detection assembly 8 is connected to the brake disc 1 and is configured to detect the rotation state of the brake disc 1 and output a rotation speed signal. The control unit 5 selectively controls the brake motor 2 according to the rotation speed signal after the brake pad 21 brakes.

[0073] Specifically, after the brake pad 21 brakes, the rotation speed of the brake disc 1 changes, and thus the speed of the vehicle changes. During the change of the vehicle speed, the second detection assembly 8 can detect the rotation state of the brake disc 1 in real time to reflect the magnitude of the rotation speed of the brake disc 1, and output a rotation speed signal to the control unit 5. After receiving the rotation speed signal, the control unit 5 can determine whether the vehicle obtains the braking force that meets the pedal stroke, i.e., the braking action, according to the rotation speed signal. If the control unit 5 determines that the braking force does not meet the braking force of the braking action, the control unit 5 needs to recalculate the braking force and send a braking signal to the brake motor 2. The brake motor 2 readjusts the braking force requirement. At the same time, the second detection assembly 8 feeds back the rotation speed signal in a closed loop to determine whether there is a phenomenon of wheel lock-up, and feeds it back to the control unit 5. Then the control unit 5 sends a signal to the controller of the brake motor 2, and the controller controls the movement of the brake motor 2 through current. In this way, it is repeatedly judged whether the braking required conditions are met.

[0074] Thus, finally, it is realized that the vehicle speed reaches the driver's braking requirement according to the road conditions, achieving the anti-lock function.

[0075] In actual design, the second detection component 8 can be installed on the steering knuckle 4 through connecting parts such as bolts and screws, and the second detection component 8 can interact with the magnetic encoder in the hub unit assembly 91, and is connected to the control unit 5 through the signal acquisition wire harness 94 to transmit signals.

[0076] In some embodiments, there are multiple brake structures 100, and the brake motors 2 of the multiple brake structures 100 are all electrically connected to the control unit 5.

[0077] Specifically, as Figure 1 shown, there are four brake structures 100, which are respectively arranged at the positions of the left front wheel, right front wheel, left rear wheel, and right rear wheel, so as to respectively perform braking control on the left front wheel, right front wheel, left rear wheel, and right rear wheel. The brake motors 2 of the four brake structures 100 can be electrically connected to the control unit 5 through the signal control wire harness 95. In this way, after the control unit 5 receives the acquired braking signal, it can be respectively sent to the four brake structures 100 to achieve the precise distribution of the braking signal and improve the deceleration control accuracy.

[0078] Thus, by setting multiple brake structures 100, the control unit 5 can respectively control the multiple brake structures 100, significantly improving the precise distribution of the vehicle braking signal, and further improving the deceleration control accuracy. Furthermore, the brake assembly 1000 can ensure to the greatest extent that the vehicle can make accurate braking positions under various road conditions, realize the ideal braking movement of the four wheels, and at the same time ensure the characteristics of ideal braking of the vehicle when driving at high speed, improving the stability of the vehicle when driving at high speed.

[0079] And the control unit 5 is electrically connected to the multiple brake structures 100, thereby canceling the complex brake hard pipes, brake hoses, brake fluid pots, fluid pot hoses, etc. and replacing them with signal wire harnesses, and integrating the brake assembly 1000 into the vehicle controller, greatly simplifying the component layout difficulty of the brake assembly 1000 and having a lower cost.

[0080] The present invention also proposes a control method for a brake assembly 1000.

[0081] According to the control method of the brake assembly 1000 of the embodiments of the present invention, the control method adopts the brake assembly 1000 of any of the above embodiments, and the control method includes:

[0082] S1: Obtain the braking signal of the brake pedal assembly.

[0083] That is to say, after the driver steps on the brake pedal 61, the first detection component transmits the braking signal of the brake pedal assembly to the control unit 5, and after receiving the braking signal, the control unit 5 obtains the braking signal of the brake pedal assembly.

[0084] S2: According to the braking signal, control the two braking motors 2 of the brake structure 100 to drive the corresponding brake pads 21 to selectively brake the brake disc 1.

[0085] That is to say, after obtaining the braking signal, the control unit 5 performs analysis and calculation to calculate the required braking force of the two braking motors 2, and outputs the braking control signals of the two braking motors 2. After receiving the braking control signals, the two braking motors 2 drive the corresponding brake pads 21 to move linearly towards the direction close to the brake disc 1 by a certain displacement to reach the required braking force, so as to realize the selective braking of the brake disc 1.

[0086] In some embodiments, the control method further includes:

[0087] S3: After the brake disc 1 is braked, obtain the rotational speed signal of the brake disc 1.

[0088] That is to say, after the brake disc 1 is braked, the second detection component 8 detects the rotational state of the brake disc 1 in real time and outputs the rotational speed signal to the control unit 5. After receiving the rotational speed signal, the control unit 5 obtains the rotational speed signal of the brake disc 1.

[0089] S4: Obtain the actual braking force according to the rotational speed signal.

[0090] That is to say, after the control unit 5 obtains the rotational speed signal, the control unit 5 performs analysis and calculation according to the rotational speed signal to obtain the actual braking force.

[0091] S5: Perform feedback control on the brake pads 21 of the braking motor 2 according to the actual braking force and the target braking force.

[0092] That is to say, the braking force calculated by the control unit 5 according to the braking signal transmitted by the brake pedal 61 assembly is the target braking force, and the braking force calculated according to the rotational speed signal transmitted by the second detection component 8 is the actual braking force. After the control unit 5 obtains the actual braking force according to the rotational speed signal, it can analyze and compare the actual braking force and the target braking force to determine whether the vehicle obtains the braking force that meets the target braking force, that is, whether the actual braking force and the target braking force are the same or close. If the actual braking force is not equal to the target braking force, the control unit 5 recalculates and sends a signal to the controller of the braking motor 2. After receiving the signal, the controller adjusts the power demand of the braking motor 2 so that the brake pads 21 of the braking motor 2 continue to move to reach the required braking force. At the same time, the second detection component 8 also feeds back the rotational speed signal to the control unit 5 in a closed loop. After receiving the rotational speed signal, the control unit 5 determines whether there is a phenomenon of wheel locking, and then the control unit 5 sends a signal to the controller of the braking motor 2 again, and repeatedly judges whether the target braking force is reached.

[0093] In some embodiments, obtaining the braking signal of the brake pedal 61 assembly includes:

[0094] S11a: Obtain the braking force signal of the brake pedal 61.

[0095] That is to say, after the driver steps on the brake pedal 61, the braking force sensor 71 transmits the braking force signal to the control unit 5. After receiving the braking force signal, the control unit 5 obtains the braking force signal of the brake pedal 61 assembly.

[0096] S11b: And obtain the braking displacement signal of the lever arm of the brake pedal 61.

[0097] That is to say, after the driver steps on the brake pedal 61, the displacement sensor 72 transmits the braking displacement signal to the control unit 5. After receiving the braking displacement signal, the control unit 5 obtains the braking displacement signal of the brake pedal 61 assembly.

[0098] The present invention also provides a vehicle.

[0099] The vehicle according to the embodiment of the present invention includes the brake assembly 1000 of any one of the above embodiments.

[0100] The vehicle according to the embodiment of the present invention can ensure to the greatest extent that the vehicle can make accurate braking positions under various road conditions, realize the ideal braking movement of the four wheels of the vehicle, and at the same time ensure the characteristics of ideal braking of the vehicle when driving at high speed, improve the stability of the vehicle when driving at high speed, and further improve the user experience and comfort, and ensure the safety of passengers.

[0101] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0102] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A brake structure, characterized in that, Comprising: A brake disc (1); Two brake motors (2), at least part of the brake disc (1) being located between the two brake motors (2), each brake motor (2) being provided with a brake pad (21), and the brake pads (21) of the two brake motors (2) being adapted to selectively clamp on both sides of the brake disc (1).

2. The brake structure according to claim 1, wherein, The brake motor (2) is configured as a linear motor for driving the corresponding brake pad (21) to move linearly; The brake pads (21) of the two linear motors are adapted to approach or move away from each other to selectively clamp the brake disc (1).

3. The brake structure according to claim 1, characterized in that The brake pads (21) of the two brake motors (2) are distributed opposite to each other in the thickness direction of the brake disc (1); And / or, the brake pads (21) of the two brake motors (2) are configured to move synchronously.

4. The brake structure according to claim 1, characterized in that, Further comprising a motor housing (3), the two brake motors (2) being mounted within the motor housing (3), and at least part of the brake disc (1) being located within the motor housing (3); And / or, further comprising a knuckle (4), the brake disc (1) being rotatably connected to the knuckle (4).

5. A braking assembly, characterized in that, Comprising a control unit (5) and a brake structure according to any one of claims 1-4, the control unit (5) being electrically connected to the brake motor (2), and the control unit (5) being configured to control the brake motor (2) to drive the brake pad (21) to move.

6. The brake assembly according to claim 5, wherein, Further comprising a brake pedal assembly and a first detection assembly, the first detection assembly being configured to detect a braking action of the brake pedal assembly and output a braking signal, and the control unit (5) being configured to control the brake motor (2) according to the braking signal.

7. The brake assembly according to claim 6, wherein The brake pedal assembly comprises a brake pedal (61), the first detection assembly comprises a braking force sensor (71), the braking force sensor (71) being mounted on the brake pedal (61) and configured to output a braking force signal of the brake pedal (61) to the control unit (5); And / or, the brake pedal (61) assembly comprises a brake pedal arm (62), the first detection assembly comprises a displacement sensor (72), and the displacement sensor (72) is configured to output a braking displacement signal of the brake pedal arm (62) to the control unit (5).

8. The brake assembly according to claim 5, wherein, Further comprising a second detection assembly (8), the second detection assembly (8) being connected to the brake disc (1) and configured to detect a rotational state of the brake disc (1) and output a rotational speed signal, and the control unit (5) selectively controlling the brake motor (2) according to the rotational speed signal after the brake pads (21) are braked.

9. The brake assembly according to claim 5, wherein, There are a plurality of the brake structures, and the brake motors (2) of the plurality of brake structures are all electrically connected to the control unit (5).

10. A control method for a braking assembly, characterized in that, The control method uses a brake assembly according to any one of claims 5-9, and the control method comprises: Obtaining a braking signal of the brake pedal assembly; According to the braking signal, control the two braking motors (2) of the brake structure to drive the corresponding brake pads (21) to selectively brake the brake disc (1).

11. The control method of the brake assembly according to claim 10, characterized in that, The control method further includes: After the brake disc (1) is braked, obtain the rotational speed signal of the brake disc (1); Obtain the actual braking force according to the rotational speed signal; Perform feedback control on the brake pads (21) of the braking motor (2) according to the actual braking force and the target braking force.

12. The control method of the brake assembly according to claim 10, characterized in that, The obtaining of the braking signal of the brake pedal assembly includes: Obtain the braking force signal of the brake pedal (61); And obtain the braking displacement signal of the brake pedal arm (62).

13. A vehicle, characterized in that, It includes the brake assembly according to any one of claims 5-9.

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