Brake system and vehicle

Abstract

The utility model discloses a braking system and a vehicle, the braking system comprises: an electronic brake pedal, a control unit, a first brake execution unit and a second brake execution unit, the control unit is electrically connected with the electronic brake pedal, the first brake execution unit is electrically connected with the control unit, and the second brake execution unit is electrically connected with the control unit. The first brake execution unit brakes wheels in a hydraulic driving mode, the second brake execution unit is electrically connected with the control unit, and the second brake execution unit brakes the wheels in an electric driving mode. The electronic brake pedal is connected with the control unit, and the control unit is connected with the first brake execution unit and the second brake execution unit, so that a user can control the first brake execution unit and the second brake execution unit by controlling the electronic brake pedal, and the first brake execution unit hydraulically drives wheels. And the second brake execution unit electrically drives the wheels, so that the vehicle can be braked in different modes, and the driving experience of a driver can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a braking system and a vehicle. Background Art

[0002] At present, wire control brake technology leads the development direction of the current automotive braking field, but the currently widely used electro-hydraulic and electronic mechanical composite brake technology has certain limitations. In related technologies, when the driver steps on the brake pedal, the brake pedal is transmitted to the brake master cylinder through a mechanical transmission structure, and the brake master cylinder delivers oil to the caliper to brake. The brake master cylinder and the caliper are dispersed in different positions of the vehicle, the distance is far, and the layout is difficult. In addition, this mechanical transmission structure is relatively complex and the cost is high. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a braking system, which can enable a vehicle to achieve different braking modes.

[0004] The utility model further provides a vehicle.

[0005] According to the braking system of the utility model, it includes: an electronic brake pedal, a control unit, a first brake execution unit and a second brake execution unit, the control unit is electrically connected to the electronic brake pedal, the first brake execution unit is electrically connected to the control unit, the first brake execution unit brakes the wheel in a hydraulically driven manner, the second brake execution unit is electrically connected to the control unit, and the second brake execution unit brakes the wheel in an electrically driven manner.

[0006] According to the braking system of the utility model, by connecting the electronic brake pedal and the control unit, and the control unit is respectively connected to the first brake execution unit and the second brake execution unit, the user can control the first brake execution unit and the second brake execution unit by controlling the electronic brake pedal, and the first brake execution unit hydraulically drives the wheel, and the second brake execution unit electrically drives the wheel, so that the vehicle can achieve different braking methods, thereby improving the driver's driving experience.

[0007] In some examples of the present invention, the braking system further includes: a pressure building unit, the pressure building unit is electrically connected to the control unit, and the first brake execution unit is connected to the pressure building unit through a fluid circuit.

[0008] In some examples of the present invention, the first brake execution unit includes: a first caliper and a pressure regulating module, and the pressure regulating module is connected between the pressure building unit and the first caliper fluid circuit.

[0009] In some examples of the present invention, there are at least two first calipers; the pressure regulating module includes: at least two boosting fluid circuits, one end of each of the boosting fluid circuits is connected to the pressure building unit fluid circuit, the other end of each of the boosting fluid circuits is connected to the corresponding first caliper, and each of the boosting fluid circuits is provided with a first control valve.

[0010] In some examples of the present utility model, the pressure building unit is connected to the two pressurized liquid circuits via a first pipeline liquid circuit, and a third control valve is provided on the first pipeline.

[0011] In some examples of the utility model, there are at least two first calipers; one end of each of the pressure relief fluid circuits is connected to the pressure building unit fluid circuit, the other end of each of the pressure relief fluid circuits is connected to the first caliper, and each of the pressure relief fluid circuits is provided with a second control valve.

[0012] In some examples of the present utility model, the pressure building unit is connected to the two pressure relief fluid circuits via a second pipeline fluid circuit, and a fourth control valve is provided on the second pipeline.

[0013] In some examples of the present invention, the fourth control valve is a one-way valve, and a guide path of the one-way valve is from the two pressure relief fluid paths to the pressure building unit.

[0014] In some examples of the present utility model, the pressure building unit includes: a brake master cylinder and a driving component, the brake master cylinder and the first brake execution unit are fluidically connected, the driving component is transmission-connected to the brake master cylinder to drive the medium from the brake master cylinder to the first brake execution unit, and the driving component is electrically connected to the control unit.

[0015] In some examples of the present invention, the brake master cylinder includes: a cylinder body and a piston, the piston is movably arranged in the cylinder body to form a medium containing chamber with a variable volume in the cylinder body, the medium containing chamber is used to connect with the first brake execution unit, and the piston is transmission connected to the driving member.

[0016] In some examples of the present invention, the brake system further includes: a reset member, which is respectively abutted against the cylinder body and the piston to provide a reset force to the piston.

[0017] In some examples of the present invention, the pressure building unit further includes: a fluid reservoir, which can be in communication with the medium containing chamber when not braking.

[0018] In some examples of the present invention, the pressure building unit also includes: a position sensor and a speed sensor, the position sensor is used to detect the position of the driving member, the position sensor is electrically connected to the control unit, and the speed sensor is used to detect the speed of the driving member, and the speed sensor is electrically connected to the control unit.

[0019] In some examples of the present invention, the pressure building unit further includes: a pressure sensor, and the pressure sensor is used to detect the pressure in the brake master cylinder.

[0020] In some examples of the present invention, the voltage regulating module and the pressure building unit are arranged in the same housing.

[0021] In some examples of the present invention, the electronic brake pedal includes: a brake pedal and at least one sensor, the at least one sensor is electrically connected to the control unit, and the at least one sensor is used to detect braking information of the brake pedal.

[0022] In some examples of the present invention, at least one of the sensors includes: a displacement sensor, an angle sensor and a force sensor, the displacement sensor is used to detect the braking displacement of the brake pedal, the angle sensor is used to detect the rotation angle of the brake pedal, and the force sensor is used to detect the force acting on the brake pedal.

[0023] In some examples of the present invention, the second brake execution unit includes: at least two second calipers and at least two electronic mechanical brakes, at least two of the electronic mechanical brakes correspond one-to-one to at least two of the second calipers, and the electronic mechanical brake includes: a motor and a transmission mechanism, the motor is transmission-connected to the transmission mechanism, and the transmission mechanism is transmission-connected to the second calipers.

[0024] In some examples of the present invention, the first brake execution unit includes a first caliper, which is used to brake one of the front wheels and the rear wheels; the second brake execution unit includes a second caliper, which is used to brake the other of the front wheels and the rear wheels.

[0025] In some examples of the present invention, the first brake execution unit is used to brake the front wheels, and the second brake execution unit is used to brake the rear wheels.

[0026] In some examples of the present invention, the braking system further includes: a brake switch, wherein the brake switch is electrically connected to the control unit.

[0027] The vehicle according to the utility model comprises: the braking system described above.

[0028] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0030] Figure 1 It is a structural schematic diagram of a braking system according to an embodiment of the utility model.

[0031] Reference numerals:

[0032] 100. Braking system; 110. Pressure building unit; 111. Fluid reservoir; 112. Master brake cylinder; 113. Driving member; 114. Cylinder body; 115. Piston; 116. Reset member; 117. Position sensor; 118. Speed ​​sensor; 120. First brake execution unit; 121. Pressure regulating module; 122. First caliper; 123. Pressurizing fluid circuit; 124. First control valve; 125. Pressure relief fluid circuit; 126. Second control valve; 127. Third control valve; 128. One-way valve; 129. Pressure sensor; 130. Electronic brake pedal; 131. Brake pedal; 132. Sensor; 140. Control unit; 150. Second brake execution unit; 151. Second caliper; 152. Electromechanical brake; 160. Brake switch. DETAILED DESCRIPTION

[0033] The embodiments of the present utility model are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present utility model are described in detail below.

[0034] Reference below Figure 1 A braking system 100 according to an embodiment of the present invention is described. The braking system 100 is applied in a vehicle.

[0035] like Figure 1 As shown, according to the brake system 100 of the utility model, it includes: an electronic brake pedal 130, a control unit 140, a first brake execution unit 120 and a second brake execution unit 150, the control unit 140 is electrically connected to the electronic brake pedal 130, the first brake execution unit 120 is electrically connected to the control unit 140, the first brake execution unit 120 brakes the wheel in a hydraulically driven manner, the second brake execution unit 150 is electrically connected to the control unit 140, and the second brake execution unit 150 brakes the wheel in an electrically driven manner.

[0036] It can be understood that the electronic brake pedal 130 and the control unit 140 are electrically connected, so that the signal of the electronic brake pedal 130 can be transmitted to the control unit 140, and the control unit 140 is respectively connected to the first brake execution unit 120 and the second brake execution unit 150, so that the control unit 140 can use the first brake execution unit 120 or the second brake execution unit 150 to perform braking operations according to actual conditions, and the first brake execution unit 120 uses hydraulic drive to brake the wheel, and the second brake execution unit 150 uses electric drive to brake the wheel, so as to meet the braking needs of the vehicle in different environments, thereby improving the driving experience of the driver and passengers.

[0037] Therefore, by connecting the electronic brake pedal 130 and the control unit 140, and the control unit 140 is respectively connected to the first brake execution unit 120 and the second brake execution unit 150, the user can control the first brake execution unit 120 and the second brake execution unit 150 by controlling the electronic brake pedal 130, and the first brake execution unit 120 hydraulically drives the wheels, and the second brake execution unit 150 electrically drives the wheels, so that the vehicle can achieve different braking methods, thereby improving the driver's driving experience.

[0038] In addition, if Figure 1 As shown, the brake system 100 further includes: a pressure building unit 110, the pressure building unit 110 is electrically connected to the control unit 140, and the first brake execution unit 120 is connected to the pressure building unit 110 through a fluid circuit. That is, the pressure building unit 110 is connected to the control unit 140, so that the control unit 140 can control the pressure building unit 110 to build pressure, and a fluid circuit is set between the first brake execution unit 120 and the pressure building unit 110, so that the pressure building unit 110 can build pressure on the first brake execution unit 120, and then the first brake execution unit 120 can brake the wheel.

[0039] In addition, if Figure 1As shown, the first brake execution unit 120 includes: a first caliper 122 and a pressure regulating module 121, and the pressure regulating module 121 is connected between the pressure building unit 110 and the first caliper 122. It can be understood that the pressure regulating module 121 and the first caliper 122 constitute the main structure of the first brake execution unit 120, the pressure building unit 110 is used to build pressure for the first brake execution unit 120, the pressure regulating module 121 is located between the pressure building unit 110 and the first caliper 122, and the first caliper 122 brakes the wheel, so that the vehicle can be braked according to actual conditions. Moreover, the pressure regulating module 121 is connected to the first caliper 122 in a fluid circuit, so that the brake fluid in the pressure building unit 110 can flow into the pressure regulating module 121, and then the wheel is braked through the first caliper 122 after being adjusted by the pressure regulating module 121. Such a setting allows the pressure regulating module 121 to control the on-off of the fluid circuit between the pressure building unit 110 and the first caliper 122.

[0040] When the driver needs to brake the vehicle, the pressure building unit 110 inputs the brake fluid into the first caliper 122 through the pressure regulating module 121, so that the vehicle can be braked. When the pressure regulating module 121 blocks the fluid path between the pressure building unit 110 and the first caliper 122, the normal driving of the vehicle can be guaranteed.

[0041] When the driver steps on the electronic brake pedal 130, the electronic brake pedal 130 transmits a signal to the control unit 140, and the control unit 140 controls the pressure building unit 110 after analysis and calculation, so that the brake fluid in the pressure building unit 110 can be transmitted to the first caliper 122 to brake the vehicle. In this way, there is no need to set a mechanical transmission mechanism between the electronic brake pedal 130 and the control unit 140, which can reduce the complexity and cost of the braking system 100 and improve the braking accuracy of the braking system 100.

[0042] In particular, the pressure regulating module 121 and the pressure building unit 110 are integrally formed, so there is no need to arrange the two in a dispersed manner, and they only need to be arranged in a suitable position in the vehicle. This can improve the integration standardization of the vehicle and optimize the space, thereby improving the braking stability of the vehicle, and also improve the layout efficiency of the braking system 100, thereby improving the safety performance of the vehicle and meeting the needs of future autonomous driving.

[0043] Among them, Figure 1As shown, there are at least two first calipers 122; the pressure regulating module 121 includes: at least two boosting liquid circuits 123 and at least two pressure relief liquid circuits 125, one end of each boosting liquid circuit 123 is connected to the pressure building unit 110 liquid circuit, and the other end of each boosting liquid circuit 123 is connected to the corresponding first caliper 122, each boosting liquid circuit 123 is provided with a first control valve 124, the pressure building unit 110 is connected to the two boosting liquid circuits 123 through a first pipeline liquid circuit, and a third control valve 127 is provided on the first pipeline, one end of each pressure relief liquid circuit 125 is connected to the pressure building unit 110 liquid circuit, and the other end of each pressure relief liquid circuit 125 is connected to the corresponding first caliper 122, each pressure relief liquid circuit 125 is provided with a second control valve 126, the pressure building unit 110 is connected to the two pressure relief liquid circuits 125 through a second pipeline liquid circuit, and a fourth control valve is provided on the second pipeline.

[0044] It can be understood that at least two pressurizing fluid circuits 123 and at least two pressure relief fluid circuits 125 constitute the main structure of the pressure regulating module 121. For example, there may be two at least two first calipers 122, and there may be two at least two pressurizing fluid circuits 123. The two first calipers 122 control the left and right wheels of the vehicle respectively, so that the first calipers 122 can brake the vehicle.

[0045] When the driver brakes the vehicle, the pressure building unit 110 is connected to the two pressure boosting fluid circuits 123 through the first pipeline fluid circuit, the third control valve 127 is opened, and the pressure boosting fluid circuit 123 is connected to the pressure building unit 110 fluid circuit and the first caliper 122, so that the brake fluid in the pressure building unit 110 is delivered to the first caliper 122, and the first caliper 122 brakes the wheel, and the pressure boosting fluid circuit 123 is provided with a first control valve 124, so that the first control valve 124 controls the on and off of the pressure boosting fluid circuit 123, and the pressure building unit 110 is connected to the two pressure relief fluid circuits 125 through the second pipeline fluid circuit, When the fourth control valve is opened, each pressure relief fluid circuit 125 is connected to the pressure building unit 110 and the pressure boosting fluid circuit 123, so that the pressure relief fluid circuit 125 can recycle the brake fluid to the pressure building unit 110. When the driver releases the brake, the pressure relief fluid circuit 125 is connected to the pressure building unit 110 and the pressure boosting fluid circuit 123, and the brake fluid flows back to the pressure building unit 110 through the pressure relief fluid circuit 125, so that the brake fluid can be recycled. In addition, the pressure relief fluid circuit 125 is located between the second control valve 126 and the first caliper 122, so that the second control valve 126 can control the opening and closing of the pressure relief fluid circuit 125. For example, the first control valve 124 and the second control valve 126 are both solenoid valves, so as to facilitate the control of the opening and closing of the pressure boosting fluid circuit 123 and the pressure relief fluid circuit 125. With such a configuration, at least two pressure boosting fluid circuits 123 and at least two pressure relief fluid circuits 125 can share the pressure building unit 110, which can simplify the structure of the brake system 100. The fourth control valve can be a one-way valve 128, and the guiding path of the one-way valve 128 is from the two pressure relief fluid circuits 125 to the pressure building unit 110. In this way, the flow direction of the oil can be restricted, and the pressure relief fluid circuit 125 is only allowed to flow to the pressure building unit 110, thereby achieving pressure relief and releasing the brake, and ensuring the safety of the use of the braking system 100.

[0046] In addition, if Figure 1As shown, the pressure building unit 110 includes: a brake master cylinder 112 and a driving member 113. The brake master cylinder 112 and the first brake execution unit 120 are fluidically connected. The driving member 113 is transmission-connected to the brake master cylinder 112, so that the medium can be driven from the brake master cylinder 112 to the first brake execution unit 120. The driving member 113 is electrically connected to the control unit 140. It can be understood that the master cylinder 112 is connected to the first brake actuating unit 120, so that the master cylinder 112 can build pressure on the first brake actuating unit 120, and the driving member 113 is connected to one side of the master cylinder 112. This arrangement allows the driving member 113 to provide driving force to the master cylinder 112, so that the master cylinder 112 can deliver the medium to the first brake actuating unit 120, thereby facilitating the first brake actuating unit 120 to brake, and the driving member 113 is electrically connected to the control unit 140, so that the control unit 140 can control the driving member 113 to drive the master cylinder 112 after analysis and calculation, thereby facilitating the braking system 100 to brake the vehicle. The driving member 113 can be a motor.

[0047] Among them, Figure 1 As shown, the master brake cylinder 112 includes: a cylinder body 114 and a piston 115. The piston 115 is movably arranged in the cylinder body 114 to form a medium accommodating chamber with a variable volume in the cylinder body 114. The medium accommodating chamber is used to connect with the first brake actuating unit 120. The piston 115 is in transmission connection with the driving member 113. In other words, the cylinder body 114 and the piston 115 constitute the main structure of the master brake cylinder 112. The cylinder body 114 is located between the reservoir 111 and the fluid path of the first brake actuating unit 120. A medium accommodating chamber with a variable volume is formed in the cylinder body 114, so that the medium can be stored in the cylinder body 114. The piston 115 is located in the cylinder body 114, and the piston 115 can move relative to the cylinder body 114, so that the medium in the medium accommodating chamber can flow to the first brake actuating unit 120, and then the piston 115 can move the master brake cylinder 112 to assist in building pressure. For example, the cylinder body 114 is a single-chamber cylinder. This configuration can simplify the structure of the brake master cylinder 112 and also ensure the pressure building stability of the brake master cylinder 112 .

[0048] In addition, if Figure 1 As shown, the brake system 100 further includes: a reset member 116, which is respectively in contact with the cylinder 114 and the piston 115, so as to provide a reset force to the piston 115. It is understandable that the reset member 116 is located between the piston 115 and the cylinder 114, so that the reset member 116 can provide a reciprocating force to the piston 115, thereby facilitating the reciprocating motion of the piston 115 in the cylinder 114.

[0049] In addition, if Figure 1As shown, the pressure building unit 110 further includes: a fluid reservoir 111, which can be communicated with the medium containing chamber when not braking. That is, the brake master cylinder 112 is located between the fluid reservoir 111 and the first brake actuating unit 120 fluid circuit, and the fluid reservoir 111 is communicated with the medium containing chamber, so that the brake master cylinder 112 can transfer the medium in the fluid reservoir 111 to the first brake actuating unit 120, thereby facilitating the first brake actuating unit 120 to brake.

[0050] In addition, if Figure 1 As shown, the pressure building unit 110 further includes: at least one of a position sensor 117 and a speed sensor 118, the position sensor 117 is used to detect the position of the driving member 113, the position sensor 117 is electrically connected to the control unit 140, and the speed sensor 118 is used to detect the speed of the driving member 113, and the speed sensor 118 is electrically connected to the control unit 140. It can be understood that the position sensor 117 is connected to one side of the driving member 113, so that the position sensor 117 can detect the position of the driving member 113, and the position sensor 117 is electrically connected to the control unit 140, so that the position of the driving member 113 is fed back to the control unit 140, and the speed sensor 118 is connected to the other side of the driving member 113, so that the speed sensor 118 can detect the speed of the driving member 113, and the speed sensor 118 is electrically connected to the control unit 140, so that the speed of the driving member 113 is fed back to the control unit 140, so that the control unit 140 can analyze and calculate the corresponding braking method.

[0051] In addition, if Figure 1 As shown, the pressure building unit 110 also includes: a pressure sensor 129, which is used to detect the pressure in the brake master cylinder 112. Such a configuration allows the pressure sensor 129 to detect the pressure in the brake master cylinder 112, that is, to detect the pressure in the cylinder body 114 when the piston 115 assists in building pressure, thereby facilitating the control unit 140 to analyze and calculate the corresponding braking method.

[0052] In particular, if Figure 1 As shown, the pressure regulating module 121 and the pressure building unit 110 are arranged in the same shell, so there is no need to arrange them in a dispersed manner, and they only need to be arranged in a suitable position in the vehicle. This can improve the integration standardization of the vehicle and optimize the space, thereby improving the braking stability of the vehicle, and also improve the layout efficiency of the braking system 100, thereby improving the safety performance of the vehicle and meeting the needs of future autonomous driving.

[0053] In addition, if Figure 1As shown, the electronic brake pedal 130 includes: a brake pedal 131 and at least one sensor 132, at least one sensor 132 is electrically connected to the control unit 140, and at least one sensor 132 is used to detect the braking information of the brake pedal 131. That is to say, the brake pedal 131 and the at least one sensor 132 constitute the main structure of the electronic brake pedal 130, the brake pedal 131 is located at the driver's stepping part, the at least one sensor 132 is located between the brake pedal 131 and the control unit 140, and the brake pedal 131, the at least one sensor 132 and the control unit 140 are electrically connected. This arrangement allows the at least one sensor 132 to detect the movement of the brake pedal 131 and the braking intention after the driver steps on the brake pedal 131, and then integrates the movement of the brake pedal 131 and the braking intention into corresponding braking information, and then transmits the electrical signal to the control unit 140, so that the control unit 140 can perform a suitable braking method on the vehicle after analysis and calculation.

[0054] Alternatively, if Figure 1 As shown, at least one sensor 132 includes: a displacement sensor, an angle sensor and a force sensor. The displacement sensor is used to detect the braking displacement of the brake pedal 131 , the angle sensor is used to detect the rotation angle of the brake pedal 131 , and the force sensor is used to detect the force acting on the brake pedal 131 .

[0055] It can be understood that the sensor 132 can be one or more of a displacement sensor, an angle sensor and a force sensor, and the displacement sensor, the angle sensor and the force sensor correspondingly detect the displacement, the rotation angle and the force applied to the brake pedal 131. When the displacement sensor, the angle sensor and the force sensor are used, the displacement sensor, the angle sensor and the force sensor are redundant with each other. When one of the sensors is damaged, the other sensors can still detect the movement of the brake pedal 131 and the braking intention, so that the control unit 140 can perform appropriate braking on the vehicle after analysis and calculation, thereby improving the safety performance of the vehicle.

[0056] In addition, if Figure 1As shown, the electronic brake pedal 130 further includes: a force feedback device, which is connected to the brake pedal 131, and the force feedback device generates a reaction force to the driver's action of stepping on the brake pedal 131 through the brake pedal 131. In other words, the force feedback device is connected to the brake pedal 131, and such a configuration facilitates the force feedback device to collect the driver's action of stepping on the brake pedal 131 to generate a reaction force, thereby giving the driver a stepping feeling, and facilitating the driver to know the magnitude of the braking force, and transmitting the reaction force information collected by the force feedback device to the control unit 140, thereby facilitating the control unit 140 to define and judge the driver's braking intention, and then facilitating the sending of a brake system 100 start signal and lighting of the brake lights and other systems.

[0057] Among them, Figure 1 As shown, the second brake execution unit 150 includes: at least two second calipers 151 and at least two electronic mechanical brakes 152, the at least two electronic mechanical brakes 152 correspond one-to-one to the at least two second calipers 151, and the electronic mechanical brake 152 includes: a motor and a transmission mechanism, the motor is transmission-connected to the transmission mechanism, and the transmission mechanism is transmission-connected to the second calipers 151.

[0058] It can be understood that at least two second calipers 151 and at least two electronic mechanical brakes 152 constitute the main structure of the second brake execution unit 150, at least two second calipers 151 respectively control the left wheel and the right wheel of the vehicle, the two electronic mechanical brakes 152 correspond to the two second calipers 151 one by one, so that the electronic mechanical brake 152 controls the second caliper 151 to brake the wheel, and the motor and the transmission mechanism constitute the main structure of the electronic mechanical brake 152, the motor, the transmission mechanism and the second caliper 151 are connected in sequence, so that the force provided by the motor to the transmission mechanism can be transmitted to the second caliper 151, thereby facilitating the second caliper 151 to brake the wheel.

[0059] Alternatively, if Figure 1As shown, the first brake actuating unit 120 includes a first caliper 122, and the first caliper 122 is used to brake one of the front wheels and the rear wheels; the second brake actuating unit 150 includes a second caliper 151, and the second caliper 151 is used to brake the other of the front wheels and the rear wheels. For example, the first caliper 122 brakes the front wheels, and the second caliper 151 brakes the rear wheels, so that the first brake actuating unit 120 brakes the front wheels, and the second brake actuating unit 150 brakes the rear wheels. This arrangement can make the vehicle have at least two braking force systems, so that the first brake actuating unit 120 and the second brake actuating unit 150 can be precisely controlled and distributed, and this arrangement has the characteristics of small size, light weight, low cost, and zero drag of the second brake actuating unit 150, so that when one of the brake actuating units fails, the other brake actuating unit can be ensured to continue braking, thereby improving the safety performance of the vehicle.

[0060] In particular, if Figure 1 As shown, the first brake execution unit 120 is used to brake the front wheel, and the second brake execution unit 150 is used to brake the rear wheel. This arrangement enables the first brake execution unit 120 and the second brake execution unit 150 to brake the front wheel and the rear wheel respectively, thereby achieving precise regulation and allocation of the first brake execution unit 120 and the second brake execution unit 150, thereby improving the safety performance of the vehicle.

[0061] In addition, if Figure 1 As shown, the brake system 100 further includes a brake switch 160, which is electrically connected to the control unit 140, so that the electronic parking brake system 100 of the vehicle can be implemented, and the parking effect will not be affected by the handbrake force of the driver, thereby further improving the safety performance of the vehicle. The brake switch 160 can be an EPB (electronic parking brake system of the vehicle) switch.

[0062] Specifically, when the vehicle is in normal braking mode, the pressure building unit 110 controls the first control valve 124 and the third control valve 127 to be turned on, and the second control valve 126 to be closed, so that the brake fluid in the reservoir 111 flows into the master brake cylinder 112. When the driver steps on the brake pedal 131, the sensor 132 recognizes the driver's braking intention and sends a signal to the control unit 140. The control unit 140 calculates and analyzes the braking force that the first brake execution unit 120 and the second brake execution unit 150 should provide based on the state of the vehicle at this time, and then transmits the execution signal to the control unit 140 respectively. To the driving member 113 and the electronic mechanical brake 152, the driving member 113 in the first brake execution unit 120 transfers the brake fluid in the reservoir 111 to the cylinder 114 through the rotation of the motor, and then the driving member 113 pushes the piston 115 to transfer the brake fluid in the cylinder 114 to the first caliper 122 through the booster fluid circuit 123. After the electronic mechanical brake 152 in the second brake execution unit 150 receives the execution signal, it builds up pressure on the second caliper 151, so that the first brake execution unit 120 and the second brake execution unit 150 can brake the vehicle.

[0063] When the vehicle is in the failure braking mode, the first brake execution unit 120 or the second brake execution unit 150 fails and has no power supply, that is, the brake system 100 is in a single failure state, the control unit 140 detects the hydraulic pressure of the first caliper 122 and the second caliper 151 and analyzes the fault point, so as to control the normally working brake execution unit to perform coordinated braking, thereby meeting the demand for redundant braking and improving the safety of the vehicle. In addition, when a single failure occurs in the control-related parts such as the control unit 140, the sensor 132, the communication bus, and the power supply, the backup control is completed by relying on the backup control unit 140, the sensor 132, the line and the power supply.

[0064] The vehicle according to the embodiment of the utility model comprises: the braking system 100 of the above embodiment, which can realize braking decoupling and precise adjustment and distribution of braking force, so that the driver can experience different braking experiences.

[0065] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0066] In the description of the present utility model, "first feature" and "second feature" may include one or more of the features. In the description of the present utility model, "plurality" means two or more. In the description of the present utility model, the first feature "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact not directly but through another feature between them. In the description of the present utility model, the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.

[0067] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" 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 utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0068] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate 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, characterized in that: include: Electronic brake pedal; a control unit, the control unit being electrically connected to the electronic brake pedal; a first brake execution unit, the first brake execution unit is electrically connected to the control unit, and the first brake execution unit brakes the wheel in a hydraulically driven manner; A second brake execution unit is electrically connected to the control unit, and the second brake execution unit brakes the wheel in an electrically driven manner.

2. The braking system according to claim 1, characterized in that: Also includes: A pressure building unit, wherein the pressure building unit is electrically connected to the control unit, and the first brake execution unit is connected to the pressure building unit through a fluid circuit.

3. The braking system according to claim 2, characterized in that: The first brake execution unit (120) comprises: First caliper; A pressure regulating module is connected between the pressure building unit and the first caliper fluid circuit.

4. The braking system according to claim 3, characterized in that: There are at least two first calipers; The voltage regulating module comprises: At least two boosting fluid circuits, one end of each boosting fluid circuit is connected to the pressure building unit fluid circuit, the other end of each boosting fluid circuit is connected to the corresponding first caliper, and each boosting fluid circuit is provided with a first control valve.

5. The braking system according to claim 4, characterized in that: The pressure building unit is connected to the two pressurizing liquid circuits via a first pipeline, and a third control valve is provided on the first pipeline.

6. The braking system according to claim 3, characterized in that: There are at least two first calipers; The voltage regulating module comprises: At least two pressure relief fluid circuits, one end of each of the pressure relief fluid circuits is connected to the pressure building unit fluid circuit, the other end of each of the pressure relief fluid circuits is connected to the first caliper, and each of the pressure relief fluid circuits is provided with a second control valve.

7. The braking system according to claim 6, characterized in that: The pressure building unit is connected to the two pressure relief fluid circuits via a second pipeline fluid circuit, and a fourth control valve is provided on the second pipeline.

8. The braking system according to claim 7, characterized in that: The fourth control valve is a one-way valve, and a guide path of the one-way valve is from the two pressure relief fluid paths to the pressure building unit.

9. The braking system according to claim 2, characterized in that: The pressure building unit comprises: A brake master cylinder, the brake master cylinder and the first brake actuating unit are fluidly connected; A driving member is transmission-connected with the master brake cylinder to drive a medium to flow from the master brake cylinder to the first brake actuation unit, and the driving member is electrically connected to the control unit.

10. The braking system according to claim 9, characterized in that: The brake master cylinder comprises: Cylinder body; A piston is movably disposed in the cylinder body to form a medium accommodating chamber with a variable volume in the cylinder body, wherein the medium accommodating chamber is used to be connected to the first brake execution unit, and the piston is drivingly connected to the driving member.

11. The brake system according to claim 10, characterized in that: Also includes: A reset member is respectively abutted and matched with the cylinder body and the piston to provide a reset force to the piston.

12. The brake system according to claim 10, characterized in that: The pressure building unit further includes: A fluid reservoir is capable of communicating with the medium accommodating chamber when the brake is not applied.

13. The braking system according to claim 9, characterized in that: The pressure building unit further includes: a position sensor, the position sensor being used to detect the position of the driving member, the position sensor being electrically connected to the control unit; and / or A speed sensor is used to detect the speed of the driving member, and the speed sensor is electrically connected to the control unit.

14. The braking system according to claim 9, characterized in that: The pressure building unit further includes: A pressure sensor is used to detect the pressure in the brake master cylinder.

15. The braking system according to claim 3, characterized in that: The voltage regulating module and the pressure building unit are arranged in the same housing.

16. The brake system according to any one of claims 1 to 15, characterized in that: The electronic brake pedal comprises: Brake pedal; At least one sensor is electrically connected to the control unit, and at least one sensor is used to detect braking information of the brake pedal.

17. The braking system according to claim 16, characterized in that: At least one of the sensors comprises: a displacement sensor, the displacement sensor being used to detect the braking displacement of the brake pedal; and / or a rotation angle sensor, the rotation angle sensor being used to detect the rotation angle of the brake pedal; and / or A force sensor is used to detect the force applied to the brake pedal.

18. The braking system according to any one of claims 1 to 15, characterized in that: The second brake execution unit comprises: at least two second calipers; At least two electronic mechanical brakes, at least two of the electronic mechanical brakes correspond one-to-one to at least two of the second calipers, the electronic mechanical brakes include: a motor and a transmission mechanism, the motor is transmission-connected to the transmission mechanism, and the transmission mechanism is transmission-connected to the second calipers.

19. The braking system according to claim 1, characterized in that: The first brake actuation unit includes a first caliper, and the first caliper is used to brake one of the front wheel and the rear wheel; The second brake actuating unit includes a second caliper for braking the other of the front wheel and the rear wheel.

20. The braking system according to claim 1, characterized in that The first brake actuating unit is used for braking the front wheels, and the second brake actuating unit is used for braking the rear wheels.

21. The brake system according to claim 1, characterized in that Also includes: A brake switch is electrically connected to the control unit.

22. A vehicle, characterized in that: include: The braking system according to any one of claims 1 to 21.

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