CN219821405U

CN219821405U - Novel full-decoupling electronic hydraulic and mechanical hybrid braking system

Info

Publication number: CN219821405U
Application number: CN202320095438.7U
Authority: CN
Inventors: 陈晶杰; 邓海燕; 黄平宇
Original assignee: Qiangu Automotive Technology Jiangsu Co ltd
Current assignee: Qiangu Automotive Technology Jiangsu Co ltd
Priority date: 2023-02-01
Filing date: 2023-02-01
Publication date: 2023-10-13
Anticipated expiration: 2033-02-01

Abstract

The utility model relates to a novel full-decoupling electro-hydraulic and mechanical hybrid braking system, which relates to the technical field of vehicle braking and comprises a braking pedal body, a first braking disc, a second braking disc, a third braking disc, a fourth braking disc, a first caliper, a second caliper, a third caliper and a fourth caliper which correspond to the braking pedal body, wherein a hydraulic braking unit and a mechanical braking unit are arranged on one side of the braking pedal body, the hydraulic braking unit is connected with the first caliper and the second caliper, and the mechanical braking unit is connected with the third caliper and the fourth caliper. The utility model can realize quick pressurization, has small volume, light weight and low cost, can provide redundant backup when in failure, and ensures the running safety of the vehicle.

Description

Novel full-decoupling electronic hydraulic and mechanical hybrid braking system

Technical Field

The utility model relates to the technical field of vehicle braking, in particular to a novel full-decoupling electro-hydraulic and mechanical hybrid braking system.

Background

In recent years, along with the continuous improvement of the living standard of residents in China, people also put forward new demands on living environments and traveling modes. The country also goes out a series of assistance policies to assist the automobile industry in one-time energy revolution. Currently, the development direction of vehicle dynamism and intellectualization has become a common knowledge of the industry. In this context, the control technology in the automotive field is also advancing synchronously, and the various systems of the automobile also interact and promote, for example, the vehicle power system and the vehicle brake system.

The present chinese patent publication No. CN106965670a discloses a power system for a vehicle, particularly a car, comprising: an internal combustion engine comprising an output shaft; the powertrain is for driving at least one drive wheel of a vehicle by an internal combustion engine, comprising a first powertrain shaft; an alternator; and a coupling device comprising: an engine coupling device for coupling the alternator with the output shaft; and a drive train coupling device for coupling the alternator with the first drive train shaft; wherein the coupling device is adapted to automatically operate the alternator via the first driveline shaft coupled thereto when the internal combustion engine is shut down, in particular during driving of the vehicle.

The prior art chinese patent publication No. CN102947151a discloses a hydraulic vehicle brake system including a brake line connecting a brake pressure generator connected to a pressureless storage container to wheel brakes; further comprising an inlet side pressure regulating valve provided into the brake line between the brake pressure generator and the wheel brake; the hydraulic brake system further comprises an output side pressure regulating valve arranged in a return line which connects the wheel brakes with the low pressure accumulator; the brake system further comprises a pump arranged downstream of the low-pressure reservoir on the return line, which pump takes pressure medium out of the low-pressure reservoir for brake pressure control and feeds it via the inlet-side pressure regulating valve to the wheel brakes and via an isolating valve arranged in the brake circuit upstream of the inlet-side pressure regulating valve in the direction of the brake pressure generator; the hydraulic brake system is characterized in that when the brake pressure generator is actuated, the pressure generated by the brake pressure generator can be fed to the low-pressure reservoir, if desired or required, bypassing the wheel brakes.

In the related art, brake systems have been developed from initial friction braking, to later drum-type disc brakes, to later-occurring mechanical anti-lock brake systems (ABS), analog electronic ABS and digital electronic ABS, until recently emerging vehicle drive-by-wire systems, in which the entire car is connected together by network signals rather than mechanical structures. The traditional hydraulic or air braking system is added with a large number of electronic control systems and additional functions, the structure and the pipeline arrangement are more complicated, the hidden danger of hydraulic circuit or air leakage is also more serious, and the difficulty of assembly and maintenance is also increased. As a new technology which has not been popularized, the electromechanical brake does not need brake fluid and brake lines, and the brake torque is completely generated by motor-driven actuators mounted on four wheel ends. Therefore, a brake master cylinder, a hydraulic pipeline and the like are correspondingly omitted, and the structure of the brake system is greatly simplified.

The inventor believes that although electromechanical braking has many advantages over conventional hydraulic braking, the related technology is still not mature from the viewpoints of safety redundancy, braking heat dissipation, energy consumption and the like, and the running safety of the vehicle cannot be ensured.

Disclosure of Invention

Aiming at the development trend of the electric and intelligent automobiles, a novel full-decoupling electronic hydraulic and mechanical hybrid braking system is provided.

The utility model provides a novel full-decoupling electro-hydraulic and mechanical hybrid braking system, which adopts the following technical scheme:

the utility model provides a novel full decoupling zero electronic hydraulic pressure and mechanical hybrid braking system, includes brake pedal body, first brake disc, second brake disc, third brake disc, fourth brake disc and rather than corresponding first calliper, second calliper, third calliper and fourth calliper, one side of brake pedal body is provided with hydraulic braking unit and mechanical braking unit, hydraulic braking unit with first calliper, second calliper are connected, mechanical braking unit with third calliper, fourth calliper are connected.

Optionally, the hydraulic braking unit comprises an electronic hydraulic braking system and a hydraulic electronic control unit, and the hydraulic electronic control unit is provided with a push rod and a braking switch.

Optionally, a first hydraulic pipeline and a second hydraulic pipeline are arranged between the electronic hydraulic brake system and the corresponding first caliper and second caliper.

Optionally, the first brake disc, the second brake disc, the third brake disc and the fourth brake disc are respectively and correspondingly provided with a first wheel speed sensor, a second wheel speed sensor, a third wheel speed sensor and a fourth wheel speed sensor, and the first wheel speed sensor, the second wheel speed sensor, the third wheel speed sensor and the fourth wheel speed sensor are all connected with the hydraulic electronic control unit.

Optionally, the mechanical braking unit includes a first electromechanical braking system, a second electromechanical braking system, a first electromechanical control unit, and a second electromechanical control unit, where the first electromechanical braking system, the second electromechanical braking system, the first electromechanical control unit, and the second electromechanical control unit are all connected with the hydraulic electronic control unit.

Optionally, a travel sensor is disposed on the brake pedal body, and the travel sensor is connected with the hydraulic brake system.

Optionally, a brake pedal feel simulator is arranged on one side of the brake pedal body.

In summary, the utility model comprises at least one of the following beneficial technical effects:

the utility model can realize quick pressurization, and has small volume, light weight and low cost, and can provide redundant backup when in failure, thereby ensuring the running safety of the vehicle.

Drawings

Fig. 1 is a block diagram of a novel fully-decoupled electro-hydraulic and mechanical hybrid brake system in accordance with the present embodiment.

Reference numerals: 1. a first caliper; 2. a second caliper; 3. a third caliper; 4. a fourth caliper; 5. a first brake disc; 6. a second brake disc; 7. a third brake disc; 8. a fourth brake disc; 9. a first wheel speed sensor; 10. a second wheel speed sensor; 11. a third wheel speed sensor; 12. a fourth wheel speed sensor; 13. a first hydraulic line; 14. a second hydraulic line; 15. a first electromechanical braking system; 16. a second electromechanical braking system; 17. a first mechano-electronic control unit; 18. a second mechano-electronic control unit; 19. a brake pedal body; 20. a stroke sensor; 21. a brake pedal feel simulator; 22. an electro-hydraulic braking system; 23. a hydraulic electronic control unit; 24. a push rod; 25. and a brake switch.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present utility model fall within the protection scope of the present utility model.

Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model belongs. As used in the specification and claims of the present application, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one.

The present utility model will be described in further detail with reference to fig. 1.

The embodiment of the utility model discloses a novel full-decoupling electro-hydraulic and mechanical hybrid braking system.

Referring to fig. 1, a novel full-decoupling electro-hydraulic and mechanical hybrid brake system comprises a brake pedal body 19, a first brake disc 5, a second brake disc 6, a third brake disc 7, a fourth brake disc 8, and a first caliper 1, a second caliper 2, a third caliper 3 and a fourth caliper 4 corresponding to the brake pedal body, wherein a hydraulic brake unit and a mechanical brake unit are arranged on one side of the brake pedal body 19, the hydraulic brake unit is connected with the first caliper 1 and the second caliper 2, and the mechanical brake unit is connected with the third caliper 3 and the fourth caliper 4. When the device is used, the rapid pressurization can be realized, the volume is small, the weight is light, the cost is low, the redundant backup can be provided when the device fails, and the running safety of the vehicle is ensured.

The first brake disc 5, the second brake disc 6, the third brake disc 7 and the fourth brake disc 8 are respectively mounted on the vehicle, and when in use, the first brake disc 5, the second brake disc 6, the third brake disc 7 and the fourth brake disc 8 are respectively braked by the first caliper 1, the second caliper 2, the third caliper 3 and the fourth caliper 4.

The hydraulic braking unit comprises an electronic hydraulic braking system 22 and a hydraulic electronic control unit 23, a travel sensor 20 is arranged on the brake pedal body 19, the travel sensor 20 is arranged on the brake pedal body 19, and the travel sensor 20 is connected with the electronic hydraulic braking system 22. The hydraulic electronic control unit 23 is provided with a push rod 24 and a brake switch 25, and preferably the brake switch 25 is an EPB switch. The EPB switch is a control switch used in the electronic parking brake system, replaces the traditional mechanical lever and a tire steel cable, can provide better help for a driver, is safer than the traditional electronic hand brake button for the hand brake of the pull rod, does not change the braking effect due to the strength of the driver, changes the traditional hand brake of the pull rod into a button which is accessible by a tentacle, and releases the space between front seats.

A first hydraulic pipeline 13 and a second hydraulic pipeline 14 are arranged between the electro-hydraulic brake system 22 and the corresponding first caliper 1 and second caliper 2.

In use, a driver depresses the brake pedal body 19, the travel sensor 20 on the brake pedal body 19 transmits the travel force information of the pedal body to the hydraulic electronic control unit 23 in the electronic hydraulic brake system 22, the hydraulic electronic control unit 23 calculates the driver desired braking force, and the first brake disc 5 and the second brake disc 6 are braked through the first hydraulic line 13 and the second hydraulic line 14 and the first caliper 1 and the second caliper 2.

The brake pedal body 19 is further provided with a brake pedal feel simulator 21, pedal force feedback is provided for a driver through the brake pedal feel simulator 21, so that driving feel of the driver is improved, and the driver can adjust force for stepping on the brake pedal body 19 according to the driving feel, so that driving safety of the vehicle is improved.

The mechanical braking unit comprises a first electronic mechanical braking system 15, a second electronic mechanical braking system 16, a first mechanical electronic control unit 17 and a second mechanical electronic control unit 18, wherein the first electronic mechanical braking system 15 and the first mechanical electronic control unit 17 are correspondingly arranged on the third caliper 3, the second electronic mechanical braking system 16 and the second mechanical electronic control unit 18 are correspondingly arranged on the fourth caliper 4, and the first electronic mechanical braking system 15, the second electronic mechanical braking system 16, the first mechanical electronic control unit 17 and the second mechanical electronic control unit 18 are all connected with the hydraulic electronic control unit 23.

In the prior art, the hydraulic braking unit is simply called EHB, the mechanical braking unit is simply called EMB, and the EMB mainly comprises a power supply, a motor, a wire, a motion conversion device, a sensor, a first mechano-electronic control unit 17, a second mechano-electronic control unit 18, and the like, wherein the first mechano-electronic control unit 17 and the second mechano-electronic control unit 18 are simply called ECU, and the ECU is a microcomputer controller special for an automobile. It is composed of micro controller, memory, input/output interface (I/O), A/D converter (A/D) and shaping and driving large-scale integrated circuits.

Each loop of the EMB is provided with a control module and a power source, and each loop is provided with a storage battery. The two central control modules work relatively independently, meanwhile, the two-way signal wires are communicated with each other, and when one set of braking circuit fails or breaks down, the other set of circuit can work normally, so that the braking safety is ensured. The utility model directly applies the EHB and the EMB and combines the EHB and the EMB.

The first, second, third, and fourth brake discs 5, 6, 7, and 8 are provided with first, second, third, and fourth wheel speed sensors 9, 10, 11, and 12, respectively, and the first, second, third, and fourth wheel speed sensors 9, 10, 11, and 12 are connected to the hydraulic electronic control unit 23.

The hybrid brake system has three modes of operation:

the first mode of operation is a brake assist mode: in this mode, the driver depresses the brake pedal body 19, the stroke sensor 20 on the brake pedal body 19 transmits the stroke force information of the pedal body to the hydraulic electronic control unit 23 in the electronic hydraulic brake system 22, and the hydraulic electronic control unit 23 calculates the driver's desired braking force and brakes the first brake disc 5 and the second brake disc 6 through the first hydraulic line 13 and the second hydraulic line 14 and the first caliper 1 and the second caliper 2. At the same time, the first 17 and second 18 electro-mechanical control units of the first 15 and second 16 electro-mechanical brake systems are also subjected to a braking request and command the third 3 and fourth 4 calipers to generate a braking force.

The second working mode is a vehicle body stability control mode: the mode means that the vehicle is under-turned or oversteered when the vehicle turns emergently or is in emergency obstacle avoidance, and if the vehicle is uncontrollable due to development of the vehicle, the vehicle posture can be improved by pressurizing a single wheel at the moment, so that the vehicle is ensured to stably run. The first brake disc 5 and the second brake disc 6 are braked by the first hydraulic line 13 or the second hydraulic line 14 only by acquiring vehicle attitude information from the hydraulic electronic control unit 23. For the third brake disc 7 and the fourth brake disc 8, after the brake pressure request is calculated by the hydraulic electronic control unit 23, the first ecu 17 or the second ecu performs braking after receiving the brake request.

The third mode of operation is a fail-redundancy mode: when the hydraulic braking unit or the mechanical braking unit fails or is not powered, the braking system is in a single failure state, and the rest actuators which can work normally coordinate to perform partial braking execution, so that the requirement of redundant braking is met.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. The utility model provides a novel full decoupling zero electronic hydraulic pressure and mechanical hybrid braking system, includes brake pedal body (19), first brake disc (5), second brake disc (6), third brake disc (7), fourth brake disc (8) and in its corresponding first calliper (1), second calliper (2), third calliper (3) and fourth calliper (4), its characterized in that: one side of the brake pedal body (19) is provided with a hydraulic braking unit and a mechanical braking unit, the hydraulic braking unit is connected with the first caliper (1) and the second caliper (2), and the mechanical braking unit is connected with the third caliper (3) and the fourth caliper (4).

2. The novel fully decoupled electro-hydraulic and mechanical hybrid brake system of claim 1, wherein: the hydraulic braking unit comprises an electronic hydraulic braking system (22) and a hydraulic electronic control unit (23), and a push rod (24) and a braking switch (25) are arranged on the hydraulic electronic control unit (23).

3. The novel fully decoupled electro-hydraulic and mechanical hybrid brake system of claim 2, wherein: a first hydraulic pipeline (13) and a second hydraulic pipeline (14) are arranged between the electronic hydraulic brake system (22) and the corresponding first calipers (1) and second calipers (2).

4. The novel fully decoupled electro-hydraulic and mechanical hybrid brake system of claim 2, wherein: the hydraulic electronic control unit is characterized in that a first wheel speed sensor (9), a second wheel speed sensor (10), a third wheel speed sensor (11) and a fourth wheel speed sensor (12) are correspondingly arranged on the first brake disc (5), the second brake disc (6), the third brake disc (7) and the fourth brake disc (8) respectively, and the first wheel speed sensor (9), the second wheel speed sensor (10), the third wheel speed sensor (11) and the fourth wheel speed sensor (12) are connected with the hydraulic electronic control unit (23).

5. The novel fully decoupled electro-hydraulic and mechanical hybrid brake system of claim 2, wherein: the mechanical braking unit comprises a first electronic mechanical braking system (15), a second electronic mechanical braking system (16), a first mechanical electronic control unit (17) and a second mechanical electronic control unit (18), wherein the first electronic mechanical braking system (15), the second electronic mechanical braking system (16), the first mechanical electronic control unit (17) and the second mechanical electronic control unit (18) are connected with the hydraulic electronic control unit (23).

6. The novel fully decoupled electro-hydraulic and mechanical hybrid brake system of claim 2, wherein: a travel sensor (20) is arranged on the brake pedal body (19), and the travel sensor (20) is connected with the hydraulic brake system.

7. The novel fully decoupled electro-hydraulic and mechanical hybrid brake system of claim 1, wherein: a brake pedal feel simulator (21) is arranged on one side of the brake pedal body (19).