Vehicle braking system and vehicle

Abstract

The utility model provides a vehicle braking system and a vehicle, the vehicle braking system comprises braking assemblies arranged on four wheels of the vehicle, and each braking assembly comprises a caliper body and brake pad parts arranged on the two sides of the interior of the caliper body and used for abutting against a brake disc structure. The brake pad component comprises a plurality of friction plates which are arranged from top to bottom according to the area size equal difference sequence, a piston structure is further arranged on the caliper body, and the multiple friction plates form a first brake structure, a second brake structure and a third brake structure which are equal in area. A first signal receiving device in communication connection with the first brake structure, a second signal receiving device in communication connection with the second brake structure and a third signal receiving device in communication connection with the third brake structure are arranged on the vehicle body.

Description

Technical Field

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

[0002] The EPB (Electronic Parking Brake System) system of a vehicle refers to an electronic parking brake system. The EPB system controls the action of the brake through electronic signals, uses an acceleration sensor to collect data in real time, and after being calculated by a computer, increases or eliminates the corresponding acting force to achieve the parking and braking functions of the vehicle.

[0003] In the prior art, during the automatic parking and braking process of a vehicle, generally, a piston is used to control the brake pads to press on the brake disc, thereby generating frictional force to decelerate or stop the vehicle. However, the overall contact area between the brake pads and the brake disc cannot be distributed according to the actually required braking force, resulting in a low utilization rate of the brake disc. Summary of the Utility Model

[0004] Based on this, the purpose of the present utility model is to provide a vehicle braking system and a vehicle, which can effectively solve the deficiencies in the above prior art.

[0005] A vehicle braking system includes:

[0006] A braking component arranged on the four wheels of the vehicle for braking the vehicle;

[0007] The braking component includes a caliper body and brake pad components arranged on both sides inside the caliper body for abutting against the brake disc structure. The brake pad components include a plurality of friction plates arranged in an arithmetic sequence according to the area size from top to bottom. A piston structure for controlling the extension and retraction of the friction plates is also arranged on the caliper body;

[0008] Among them, several of the friction plates form a first braking structure, a second braking structure, and a third braking structure with equal areas;

[0009] A first signal receiving device arranged on the vehicle body and communicatively connected to the first braking structure, a second signal receiving device communicatively connected to the second braking structure, and a third signal receiving device communicatively connected to the third braking structure;

[0010] The first signal receiving device is used to increase the line of sight range, eliminate blind spots, provide clear parking space information, and form a reverse image. The second signal receiving device is used to measure the distance between the vehicle and obstacles around it. The third signal receiving device is used to measure the relative distance, relative speed, and specific azimuth of a moving obstacle in front.

[0011] The beneficial effects of the present utility model are as follows: During the automatic parking process of the vehicle, parking obstacle information is received through the first signal receiving device, the second signal receiving device, and the third signal receiving device. When only a single piece of parking obstacle information from the first signal receiving device, the second signal receiving device, or the third signal receiving device is received, the received single piece of parking obstacle information is transmitted to the terminal, and the terminal directly calculates the braking force required for the vehicle to brake and avoid the parking obstacle. Then, through the piston structure, the braking structure communicatively connected to the signal receiving device is controlled to lean against the brake disc, thereby generating frictional force to decelerate or stop the vehicle. When multiple pieces of parking obstacle information from the first signal receiving device, the second signal receiving device, or the third signal receiving device are received, the received multiple pieces of parking obstacle information are respectively transmitted to the terminal, and the terminal calculates the braking forces required for the vehicle to brake and avoid the parking obstacles respectively. By comparing the calculated braking forces through the terminal, the maximum value of the braking forces for avoiding the parking obstacles among the multiple braking forces is taken, and then through the piston structure, the braking structure communicatively connected to the signal receiving device is controlled to lean against the brake disc, thereby generating frictional force to decelerate or stop the vehicle. Furthermore, the contact area between the brake pads and the brake disc can be reduced, and the utilization rate of the brake disc can be increased.

[0012] Further, the first signal receiving device includes a front view camera and a fish-eye camera, the second signal receiving device includes a millimeter-wave radar, and the third signal receiving device includes an ultrasonic radar.

[0013] Further, the vehicle braking system further includes a parking signal generating device for generating parking-related signals. The parking signal generating device includes a braking switch and a signal generating device, and the braking switch includes a braking touch button and a parking button.

[0014] Further, the signal generating device includes some of a hydraulic power steering controller, a brake pedal, a vehicle speed sensor, a wheel train sensor, and a brake light.

[0015] Further, the vehicle braking system further includes an electronic control unit for calculating and comparing braking forces and transmitting braking signals. The electronic control unit is communicatively connected to the first signal receiving device, the second signal receiving device, the third signal receiving device, and the parking signal generating device.

[0016] Further, the electronic control unit includes an input circuit, a microcomputer, a memory, an A / D converter, and an output circuit. The microcomputer is used for calculating and comparing braking forces, and the A / D converter is used for converting analog signals into digital signals and inputting them into the microcomputer.

[0017] Further, the vehicle braking system further includes a braking control unit for controlling the braking assembly. The braking control unit is communicatively connected to the parking signal generating device and electrically connected to the braking assembly.

[0018] Further, the vehicle braking system further includes a first CAN bus and a second CAN bus. Both the first CAN bus and the second CAN bus are communicatively connected to the first signal receiving device, the second signal receiving device, the third signal receiving device, the electronic control unit, the parking signal generating device, and the braking control unit.

[0019] Further, the vehicle braking system further includes a power supply device for supplying power to the vehicle braking system. The power supply device includes a high-voltage battery, a DC conversion circuit, a low-voltage battery, and a power controller. The high-voltage battery is connected to the vehicle braking system through the DC conversion circuit and is also connected to the low-voltage battery for charging the low-voltage battery. The low-voltage battery is connected to the vehicle braking system.

[0020] On the other hand, the present utility model also provides a vehicle, including the above-mentioned vehicle braking system. Description of the Drawings

[0021] Figure 1 It is a schematic flow chart of the vehicle braking system in an embodiment of the present utility model;

[0022] Figure 2 It is a schematic block diagram of the vehicle braking system in an embodiment of the present utility model;

[0023] Figure 3 It is a schematic structural diagram of the braking assembly in an embodiment of the present utility model;

[0024] Figure 4 It is a partial schematic structural diagram of the braking assembly in an embodiment of the present utility model;

[0025] Main Element Symbol Description:

[0026]

[0027]

[0028] The following specific embodiments will further illustrate the present utility model in conjunction with the above-mentioned drawings. Specific Embodiments

[0029] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present utility model are shown in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present utility model more thorough and comprehensive.

[0030] It should be noted that when an element is referred to as being "fixedly provided on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0032] Please refer to Figures 1 to 4 , the vehicle braking system in the embodiment of the present utility model includes a braking assembly 10 provided on the four wheels of the vehicle for braking the vehicle. The braking assembly 10 includes a caliper body 11 and brake pad components 12 provided on both sides inside the caliper body 11 for abutting against the brake disc structure. The brake pad components 12 include six friction plates 13 arranged in an arithmetic sequence according to the area size from top to bottom. A piston structure 14 for controlling the extension and retraction of the friction plates 13 is also provided on the caliper body 11. Among them, the six friction plates 13 form a first braking structure 131, a second braking structure 132 and a third braking structure 133 with equal areas. A first signal receiving device 20 communicatively connected to the first braking structure 131, a second signal receiving device 30 communicatively connected to the second braking structure 132 and a third signal receiving device 40 communicatively connected to the third braking structure 133 are provided on the vehicle body. The first signal receiving device 20 is used to increase the line of sight range, eliminate blind spots, provide clear parking space information and form a reverse image. The second signal receiving device 30 is used to measure the distance between the vehicle and obstacles around it. The third signal receiving device 40 is used to measure the relative distance, relative speed and specific azimuth of the moving obstacle in front.

[0033] Further, the first signal receiving device includes a front-view camera and a fish-eye camera, the second signal receiving device includes a millimeter-wave radar, and the third signal receiving device includes an ultrasonic radar.

[0034] Further, the vehicle braking system further includes a parking signal generating device 50 for generating parking-related signals. The parking signal generating device 50 includes a braking switch 51 and a signal generating device 52. The braking switch 51 includes a braking touch button and a parking button.

[0035] It can be understood that if one of the braking touch button or the parking button is invalid, the other will send a parking-related signal to the electronic control unit 60.

[0036] Further, the signal generating device 52 includes some of a hydraulic power assist controller, a brake pedal, a vehicle speed sensor, a wheel system sensor, and a brake light.

[0037] Further, the vehicle braking system further includes an electronic control unit 60 for calculating and comparing braking forces and transmitting braking signals. The electronic control unit 60 is communicatively connected to the first signal receiving device 20, the second signal receiving device 30, the third signal receiving device 40, and the parking signal generating device 50.

[0038] Further, the electronic control unit 60 includes an input circuit, a microcomputer, a memory, an A / D converter, and an output circuit. The microcomputer is used for calculating and comparing braking forces, and the A / D converter is used for converting analog signals into digital signals and inputting them into the microcomputer.

[0039] Further, the vehicle braking system further includes a brake control unit 70 for controlling the brake assembly 10. The brake control unit 70 is communicatively connected to the parking signal generating device 50 and is electrically connected to the brake assembly 10.

[0040] Further, the vehicle braking system further includes a first CAN bus 80 and a second CAN bus 90. Both the first CAN bus 80 and the second CAN bus 90 are communicatively connected to the first signal receiving device 20, the second signal receiving device 30, the third signal receiving device 40, the electronic control unit 60, the parking signal generating device 50, and the brake control unit 70.

[0041] It can be understood that if the first CAN bus 80 is not failed, the first signal receiving device 20, the second signal receiving device 30, and the third signal receiving device 40 communicate with the electronic control unit 60, the parking signal generating device 50, and the brake control unit 70 through the first CAN bus 80. If the first CAN bus fails, the first signal receiving device 20, the second signal receiving device 30, and the third signal receiving device 40 communicate with the electronic control unit 60, the parking signal generating device 50, and the brake control unit 70 through the second CAN bus 90.

[0042] Further, the vehicle braking system further includes a power supply device 100 for supplying power to the vehicle braking system. The power supply device 100 includes a high-voltage battery 101, a DC conversion circuit 102, a low-voltage battery 103, and a power supply controller 104. The high-voltage battery 101 is connected to the vehicle braking system through the DC conversion circuit 102 and is also connected to the low-voltage battery 103 for charging the low-voltage battery 103. The low-voltage battery 103 is connected to the vehicle braking system.

[0043] It should be noted that if the high-voltage battery 101 and the DC conversion circuit 102 are not failed, the power supply controller 104 is used to control the high-voltage battery 101 to supply power to the vehicle braking system through the DC conversion circuit 102. If the high-voltage battery 101 and the DC conversion circuit 102 fail, the power supply control device 104 is used to control the low-voltage battery 103 to supply power to the vehicle braking system.

[0044] It can be understood that if only a single parking obstacle information among the first signal receiving device 20, the second signal receiving device 30, and the third signal receiving device 40 is received, the received parking obstacle information is transmitted to the electronic control unit 60. The electronic control unit 60 then calculates the braking force required for the vehicle to brake and avoid the parking obstacle based on the received parking obstacle information, and outputs the braking force required for the vehicle to brake and avoid the parking obstacle to the parking signal generating device 50 through the electronic control unit 60. The parking signal generating device 50 generates a braking command indicating braking, outputs the braking command to the brake control unit 70, executes the calculated braking force, and then controls the brake structure communicatively connected to the signal receiving device to abut against the brake disc structure through the piston structure 14 to generate frictional force, so that the vehicle decelerates or stops, thereby reducing the contact area between the brake pads and the brake disc and increasing the utilization rate of the brake disc.

[0045] It should be noted that when the parking obstacle information of the first signal receiving device 20 is received, the first brake structure 131 is controlled by the piston structure 14 to abut against the brake disc structure. When the parking obstacle information of the second signal receiving device 30 is received, the second brake structure 132 is controlled by the piston structure 14 to abut against the brake disc structure. When the parking obstacle information of the third signal receiving device 40 is received, the third brake structure 133 is controlled by the piston structure 14 to abut against the brake disc structure.

[0046] It can be understood that if multiple parking obstacle information of the first signal receiving device 20, the second signal receiving device 30, and the third signal receiving device 40 are received, the multiple received parking obstacle information is respectively transmitted to the electronic control unit 60. The electronic control unit 60 then respectively calculates the braking forces required for the vehicle to brake and avoid the parking obstacles based on the multiple received parking obstacle information, and compares them. The maximum value of the braking forces required for the vehicle to brake and avoid the parking obstacles is taken, and the calculated and compared braking force is output to the parking signal generating device 50 through the electronic control unit 60. The parking signal generating device 50 generates a braking command indicating braking, outputs the braking command to the brake control unit 70, executes the calculated and compared braking force, and then controls the brake structure communicatively connected to the signal receiving device to abut against the brake disc structure through the piston structure 14 to generate frictional force, so that the vehicle decelerates or stops, and thus the contact area between the brake pads and the brake disc can be reduced, and the utilization rate of the brake disc can be increased.

[0047] It should be noted that when multiple parking obstacle information of the first signal receiving device 20, the second signal receiving device 30, and the third signal receiving device 40 are received, when the braking force required to avoid the parking obstacle information received by the first signal receiving device 20 is the largest, the first brake structure 131 is controlled by the piston structure 14 to abut against the brake disc structure. When the braking force required to avoid the parking obstacle information received by the second signal receiving device 30 is the largest, the second brake structure 132 is controlled by the piston structure 14 to abut against the brake disc structure. When the braking force required to avoid the parking obstacle information received by the third signal receiving device 40 is the largest, the third brake structure 133 is controlled by the piston structure 14 to abut against the brake disc structure.

[0048] On the other hand, the present invention also provides a vehicle, including the above-mentioned vehicle braking system.

[0049] In summary, in the vehicle braking system and the vehicle in the above-mentioned embodiments of the present utility model, during the automatic parking process of the vehicle, parking obstacle information is received through the first signal receiving device, the second signal receiving device, and the third signal receiving device; when only a single piece of parking obstacle information from the first signal receiving device, the second signal receiving device, or the third signal receiving device is received, the received single piece of parking obstacle information is transmitted to the terminal, and the terminal directly calculates the braking force required for the vehicle to brake and avoid the parking obstacle. Then, the piston structure controls the brake structure communicatively connected to the signal receiving device to abut against the brake disc to generate frictional force, so that the vehicle decelerates or stops; when multiple pieces of parking obstacle information from the first signal receiving device, the second signal receiving device, or the third signal receiving device are received, the received multiple pieces of parking obstacle information are respectively transmitted to the terminal, and then the terminal calculates the braking forces required for the vehicle to brake and avoid the parking obstacles respectively. By comparing the calculated braking forces through the terminal, the maximum value of the braking forces for avoiding the parking obstacles among the multiple braking forces is taken, and then the piston structure controls the brake structure communicatively connected to the signal receiving device to abut against the brake disc to generate frictional force, so that the vehicle decelerates or stops. Furthermore, the contact area between the brake pads and the brake disc can be reduced, and the utilization rate of the brake disc can be increased.

[0050] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", 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 utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0051] The above-described embodiments merely represent several implementation manners of the present utility model, and the description thereof is relatively specific and detailed, but should not be construed as a limitation on the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model shall be subject to the appended claims.

Claims

1. A vehicle braking system, characterized in that, Comprising: A braking assembly provided on the four wheels of a vehicle for braking the vehicle; The braking assembly includes a caliper body and brake pad components provided on both sides inside the caliper body for abutting against the brake disc structure. The brake pad components include a plurality of friction pads arranged in an arithmetic sequence according to area size from top to bottom. A piston structure for controlling the extension and retraction of the friction pads is also provided on the caliper body; Among them, several of the friction pads form a first braking structure, a second braking structure, and a third braking structure with equal areas; A first signal receiving device provided on the vehicle body and communicatively connected to the first braking structure, a second signal receiving device communicatively connected to the second braking structure, and a third signal receiving device communicatively connected to the third braking structure; The first signal receiving device is used to increase the line of sight range, eliminate blind spots, provide clear parking space information, and form a reverse image. The second signal receiving device is used to measure the distance between the vehicle and obstacles around it. The third signal receiving device is used to measure the relative distance, relative speed, and specific orientation of a moving obstacle in front; 2. The vehicle braking system according to claim 1, wherein The first signal receiving device includes a front view camera and a fish-eye camera. The second signal receiving device includes a millimeter-wave radar. The third signal receiving device includes an ultrasonic radar; 3. The vehicle braking system according to claim 1, characterized in that, The vehicle braking system further includes a parking signal generating device for generating parking-related signals. The parking signal generating device includes a brake switch and a signal generating device. The brake switch includes a brake touch button and a parking button; 4. The vehicle braking system according to claim 3, wherein, The signal generating device includes some of a hydraulic power assist controller, a brake pedal, a vehicle speed sensor, a wheel train sensor, and a brake light; 5. The vehicle braking system according to claim 4, characterized in that, The vehicle braking system further includes an electronic control unit for calculating and comparing braking forces and transmitting braking signals. The electronic control unit is communicatively connected to the first signal receiving device, the second signal receiving device, the third signal receiving device, and the parking signal generating device; 6. The vehicle braking system according to claim 5, wherein The electronic control unit includes an input circuit, a microcomputer, a memory, an A / D converter, and an output circuit. The microcomputer is used to calculate and compare braking forces. The A / D converter is used to convert analog signals into digital signals and input them into the microcomputer; 7. The vehicle braking system according to claim 6, wherein, The vehicle braking system further includes a brake control unit for controlling the braking assembly. The brake control unit is communicatively connected to the parking signal generating device and electrically connected to the braking assembly; 8. The vehicle braking system according to claim 7, wherein The vehicle braking system further includes a first CAN bus and a second CAN bus. Both the first CAN bus and the second CAN bus are communicatively connected to the first signal receiving device, the second signal receiving device, the third signal receiving device, the electronic control unit, the parking signal generating device, and the brake control unit; 9. The vehicle braking system according to claim 8, characterized in that, The vehicle braking system further includes a power supply device for supplying power to the vehicle braking system. The power supply device includes a high-voltage battery, a DC conversion circuit, a low-voltage battery, and a power supply controller. The high-voltage battery is connected to the vehicle braking system through the DC conversion circuit and is also connected to the low-voltage battery for charging the low-voltage battery. The low-voltage battery is connected to the vehicle braking system.

10. A vehicle, characterized in that, Comprising the vehicle braking system according to any one of claims 1-9.

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