CN211995537U - Electric control brake power assisting system with redundant modules - Google Patents
Electric control brake power assisting system with redundant modules Download PDFInfo
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- CN211995537U CN211995537U CN201922250468.7U CN201922250468U CN211995537U CN 211995537 U CN211995537 U CN 211995537U CN 201922250468 U CN201922250468 U CN 201922250468U CN 211995537 U CN211995537 U CN 211995537U
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Abstract
The utility model relates to an automatically controlled braking helping hand system of redundant module of area, including conventional helping hand module and redundant module two parts, conventional helping hand module mainly wraps the piece and integrates valve block, serial-type brake master cylinder, servo cylinder, simulator, helping hand source, footboard input rod, valve system, automatically controlled unit, sensor part and oilcan part; the redundancy module mainly comprises a power-assisted redundancy brake, a simulator redundancy, an external pedal angle sensor and a liquid storage oil can. The redundant module of the utility model can be started and realize normal brake assistance when the conventional assistance module has faults such as failure of a driving unit, leakage of a servo cylinder, control failure and the like and brake assistance failure, and can ensure pedal feel during normal braking when the conventional assistance module fails, a pedal simulation valve cannot be powered on and opened, and a pedal simulator fails; under the condition that the redundant modules fail simultaneously, the double-cavity tandem type brake master cylinder can be driven manually to realize the brake deceleration of the whole vehicle.
Description
Technical Field
The utility model relates to an automobile brake system field especially relates to an automatically controlled braking helping hand system of redundant module in area.
Background
At present, the safety of automatic driving is concerned by people, in order to meet the requirement of automatic driving, each safety component needs more than two sets of redundancy backup schemes to ensure that the normal working mode of an automobile can still be completed after a single subsystem fails, and a brake system is used as a primary subsystem of the safety component, so that the arrangement of two sets of systems must be completed, and meanwhile, the integration work of the two sets of systems can be ensured.
The utility model discloses a utility model and utility model patent that the name that this company had previously applied for patent numbers 201721732695.8 and 201711330769.X is an automatically controlled arresting gear of car, what adopt is the structure that integrates, its inside brake master cylinder is the plunger cylinder of serial-type, the simulator is that spring cluster parallel mechanism constitutes force feedback mechanism, the helping hand unit includes motor, ball and ECU, and be coaxial arrangement with servo cylinder, it integrates highly, all concentrate on an integrated base member with each part and each subsystem.
Therefore, a set of redundant modules needs to be added and integrated together for the existing brake device.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that an automatically controlled braking helping hand system of redundant module in area is provided, and the integration has redundant module, has two kinds of redundant modes moreover, and redundant module starts when guaranteeing the brake helping hand inefficacy, realizes normal brake helping hand.
The utility model provides a technical scheme that its technical problem adopted is: the electric control brake power-assisted system with the redundant module comprises a conventional power-assisted module and the redundant module;
the conventional power assisting module comprises a brake oil can, a power assisting source with a servo cylinder, a traditional brake master cylinder with a brake pedal, a pedal simulator and an ECU (electronic control Unit);
the redundant module comprises a redundant power assisting source, a redundant pedal simulator or a redundant pedal simulator valve and an auxiliary brake oil can;
the redundant module has two redundancy modes, wherein the two redundancy modes mainly differ in that the whole pedal simulator is redundant, namely the redundant pedal simulator is the same as the pedal simulator in the redundant module, and the pedal simulator valve is a single redundant pedal simulator valve which is a normally closed valve, namely the redundant module is not provided with the pedal simulator and is provided with the redundant pedal simulator valve, and the safety level of the second redundancy mode is lower than that of the first redundancy mode.
The traditional brake master cylinder is a tandem plunger cylinder, a first cavity of the traditional brake master cylinder is respectively connected with a first isolating valve, a pedal simulator and a redundant pedal simulator or a redundant pedal simulator valve through a first pipeline, a second pipeline and a third pipeline, a second cavity of the traditional brake master cylinder is connected with a second isolating valve through a fourth pipeline, the first isolating valve is connected with a third isolating valve through a sixth pipeline, the second isolating valve is connected with a fourth isolating valve through a seventh pipeline, the servo cylinder is simultaneously connected with a first control valve and a second control valve through an eighth pipeline, the servo cylinder of the redundant power assisting source is simultaneously connected with a third control valve and a fourth control valve through a ninth pipeline, an auxiliary brake oil pot is communicated with the servo cylinder of the redundant power assisting source through a tenth pipeline, and the brake oil pot is communicated with the servo cylinder of the power assisting source through an eleventh pipeline, the redundant pedal simulator valve is communicated with the pedal simulator through a twentieth pipeline;
the conventional power assisting module further comprises normally-open valves controlled in one-to-one correspondence with each wheel, the four normally-open valves are respectively connected with a fourteenth pipeline, a fifteenth pipeline, a sixteenth pipeline and a seventeenth pipeline, the fourteenth pipeline and the fifteenth pipeline are communicated with a third control valve, a third isolating valve and a first control valve, the sixteenth pipeline and the seventeenth pipeline are communicated with a fourth control valve, a fourth isolating valve and a second control valve, each wheel is further connected with four normally-closed valves in one-to-one correspondence, and the four normally-closed valves are connected with a brake oil can through an eighteenth pipeline.
The tenth pipeline and the eleventh pipeline are respectively provided with a one-way valve, and oil in the tenth pipeline and the eleventh pipeline can not flow back to the oil return kettle due to the one-way valves.
The piston in the first cavity of the traditional brake master cylinder is connected with a pedal displacement sensor, the piston in the second cavity of the traditional brake master cylinder is connected with a master cylinder pressure sensor, the servo cylinders are connected with servo cylinder pressure sensors, and an external pedal angle sensor is installed at the brake pedal.
After a normal use system is powered on, a pedal simulator is powered on and opened, when a brake pedal is stepped, a first piston in a first cavity of a traditional brake master cylinder moves, a pedal displacement sensor connected with the first piston detects the braking intention of a driver, a third isolation valve and a fourth isolation valve are closed, and a first control valve and a second control valve are opened; at the moment, liquid in the first cavity of the traditional brake master cylinder enters the pedal simulator through the second pipeline; the liquid in the second cavity of the traditional brake master cylinder is sealed in the fourth pipeline; meanwhile, a motor of the servo cylinder is powered on, liquid in the servo cylinder enters the first control valve and the second control valve through the eighth pipeline, and one of the liquid enters the corresponding 4 wheels through the fourteenth pipeline, the fifteenth pipeline, the sixteenth pipeline and the seventeenth pipeline after passing through a normally open valve, so that actual braking force is formed.
The role of the redundant module is as follows: when the conventional power assisting module has faults of failure of a driving unit, leakage of a servo cylinder, control failure and the like, and the brake power assisting module fails, the independent redundant module is started, and a third control valve and a fourth control valve of the redundant module are opened; at the moment, liquid in the first cavity of the traditional brake master cylinder enters the pedal simulator through the second pipeline; the liquid in the second cavity of the traditional brake master cylinder is sealed in the fourth pipeline; meanwhile, a servo cylinder motor in the redundancy module is powered on, liquid in the servo cylinder enters a third control valve and a fourth control valve through a ninth pipeline, one of the third control valve and the fourth control valve enters 4 corresponding wheels through a fourteenth pipeline, a fifteenth pipeline, a sixteenth pipeline and a seventeenth pipeline after passing through a normally open valve, actual braking force is formed, and actual braking force is formed.
As a supplement, when the pedal simulator of the conventional power-assisted module fails, the redundant module system is powered on, the redundant pedal simulator is powered on and opened, and when the brake pedal is stepped on, the liquid in the first cavity of the conventional brake master cylinder enters the redundant pedal simulator through the third pipeline, so that the phenomenon of short and hard pedal can be avoided.
Further, when the conventional boosting module fails, the redundant module system is powered on, the redundant pedal simulator is powered on and opened, and the brake pedal is stepped on, the first piston in the first cavity of the conventional brake master cylinder moves, the pedal stroke sensor connected with the first piston detects the braking intention of a driver, the third isolation valve and the fourth isolation valve in the redundant module are closed, and the third control valve and the fourth control valve are opened at the same time; at the moment, liquid in the first cavity of the traditional brake master cylinder enters a redundant pedal simulator in the redundant module through a third pipeline; the liquid in the second cavity of the traditional brake master cylinder is sealed in the fourth pipeline; meanwhile, a servo cylinder motor in the redundancy module is powered on, liquid in the servo cylinder enters a third control valve and a fourth control valve through a ninth pipeline, one of the third control valve and the fourth control valve enters 4 corresponding wheels through a fourteenth pipeline, a fifteenth pipeline, a sixteenth pipeline and a seventeenth pipeline after passing through a normally open valve, actual braking force is formed, and actual braking force is formed.
Furthermore, when the conventional power assisting module and the redundant module of the system fail to be powered on simultaneously, the system is switched into a mechanical backup mode, the pedal simulator and the redundant pedal simulator are always closed, the first isolation valve, the second isolation valve, the third isolation valve and the fourth isolation valve are normally opened, and the first control valve, the second control valve, the third control valve and the fourth control valve are normally closed; liquid in a first cavity of a traditional brake master cylinder passes through a first pipeline, a sixth pipeline, a third isolating valve and a first isolating valve, and one path of liquid passes through a fourteenth pipeline and a fifteenth pipeline and enters a corresponding wheel through a normally open valve; the liquid in the second cavity of the traditional brake master cylinder passes through the fourth pipeline, the seventh pipeline, the second isolation valve and the fourth isolation valve, and one way of the liquid enters the corresponding wheel through the sixteenth pipeline and the seventeenth pipeline, so that the actual braking force is formed.
Then, when the wheel needs to be depressurized, the NO corresponding to the normally open valve is electrically closed, while the corresponding normally closed valve NC is electrically opened, and the high-pressure liquid normally closed valve NC and the eighteenth pipeline return to the brake oil can, the operation is the same for each wheel.
When the brake fluid in the servo cylinder of the conventional power assisting module is continuously reduced, after the brake fluid in the servo cylinder is completely discharged, the motor drives the piston in the servo cylinder to retreat, the brake fluid in the brake oil pot and the auxiliary brake oil pot is supplemented with the brake fluid through the one-way valve, if the brake power assisting conventional power assisting module is still required to be in a fluid supplementing state at the moment, the brake power assisting conventional power assisting module cannot work normally, at the moment, the third control valve and the fourth control valve in the redundant module are opened, and the motor in the redundant module works to drive the servo cylinder to pressurize the wheel cylinder, so that the normal brake power assisting is realized.
The first cavity of the traditional brake master cylinder, the second cavity of the traditional brake master cylinder, the servo cylinder, the redundant pedal simulator and the pedal simulator are respectively subjected to liquid return and liquid supplement through corresponding pipelines.
The redundant power assisting source and the power assisting source respectively comprise a motor, a ball screw, a motor angle sensor and a temperature sensor, and the rotation of the motor can be converted into the linear movement of the servo cylinder through the ball screw.
In order to reduce the volume of the boosting system, a boosting source of the conventional boosting module, a conventional brake master cylinder, a pedal simulator and an ECU are integrated in an integrated valve block, meanwhile, various pipelines of the conventional boosting module are arranged in the integrated valve block, a valve system consisting of various valves comprises a plurality of different electromagnetic valves which are arranged at a certain position of the pipelines according to a specific position, the specific pedal feeling and the required brake deceleration of liquid according to the brake intention of a driver are ensured, and a redundancy module is arranged outside the integrated valve block.
And the servo cylinders on the conventional power-assisted module and the redundant module are communicated with the liquid leakage cavity on the integrated valve block through a nineteenth pipeline.
The first cavity of the traditional brake master cylinder is communicated with the brake oil can through a twenty-first pipeline.
Has the advantages that: the utility model relates to an automatically controlled braking helping hand system of redundant module of area, the integration has redundant module, and has two kinds of redundant modes, and redundant module can start and realize normal brake helping hand when the trouble such as drive unit became invalid, servo cylinder leaked, control became invalid, brake helping hand became invalid in conventional helping hand module to can be when conventional helping hand module became invalid, the footboard simulation valve can't be the electricity open, the footboard simulator will be invalid when guaranteeing the normal brake pedal sense; under the condition that the redundant modules fail simultaneously, the double-cavity tandem type brake master cylinder can be driven manually to realize the brake deceleration of the whole vehicle.
Drawings
Fig. 1 is a schematic structural view of a redundancy mode of the present invention;
fig. 2 is a schematic configuration diagram of another redundancy mode of the present invention.
The figure is as follows: i, a conventional power assisting module; II, redundant modules; 1. a brake oil can; 2. a conventional brake master cylinder; 3. A brake pedal; 4. a pedal simulator; 5. a servo cylinder; 6. a redundant boost source; 7. a redundant pedal simulator; 8. a redundant pedal simulator valve; 9. an auxiliary brake oil can; 10. a power assisting source; A. a first pipeline; a', a sixth pipeline; a1, fourteenth line; a2, fifteenth pipeline; B. a fourth pipeline; b' and a seventh pipeline; b1, sixteenth pipeline; b2, seventeenth line; C. an eighth pipeline; c', a ninth pipeline; d1, twenty-first pipeline; d4, eleventh line; d4', tenth pipe; d5, a twelfth pipeline; d5', thirteenth line; d6, twentieth line; E. an eighteenth pipeline; F. a second pipeline; f' and a third pipeline; G. a nineteenth pipeline; CV-1, a first control valve; CV-2, a second control valve; CV-3, a third control valve; CV-4, a fourth control valve; ISO-1, first isolation valve; ISO-2, second isolation valve; ISO-3, third isolation valve; ISO-4, fourth isolation valve; NC, normally closed valve; NO, normally open valve; SS, pedal displacement sensor; SP1, master cylinder pressure sensor; SP2, servo cylinder pressure sensor; MPS, external pedal angle sensor.
Detailed Description
The present invention will be further described with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope of the appended claims.
As shown in fig. 1-2, the technical solution adopted by the utility model for solving the technical problem is: the electric control brake power-assisted system with the redundant module comprises a conventional power-assisted module I and a redundant module II;
the conventional power assisting module I comprises a brake oil can 1, a power assisting source 10 with a servo cylinder 5, a traditional brake master cylinder 2 with a brake pedal 3, a pedal simulator 4 and an ECU (electronic control Unit);
in addition, the redundancy module II comprises a redundancy boosting source 6, a redundancy pedal simulator 7 or a redundancy pedal simulator valve 8 and an auxiliary brake oil can 9;
the utility model provides a redundant module II has two kinds of redundant modes, both main differences lie in one kind and all carry out redundantly by whole footboard simulator, as shown in FIG. 1, it has the redundant footboard simulator 7 the same with footboard simulator 4 in redundant module II to say, another kind is a single redundant footboard simulator valve, as shown in FIG. 2, footboard simulator valve is a normally closed valve, it does not have footboard simulator 4 in redundant module II to say, but has a redundant footboard simulator valve 8, the security level of the second kind of redundant mode is less than first kind of redundant mode.
The traditional brake master cylinder 2 is a tandem plunger cylinder, a first cavity of the traditional brake master cylinder is respectively connected with a first isolating valve ISO-1, a pedal simulator 4 and a redundant pedal simulator 7 or a redundant pedal simulator valve 8 through a first pipeline A, a second pipeline F and a third pipeline F ', a second cavity of the traditional brake master cylinder 2 is connected with a second isolating valve ISO-2 through a fourth pipeline B, the first isolating valve ISO-1 is connected with a third isolating valve ISO-3 through a sixth pipeline A', the second isolating valve ISO-2 is connected with a fourth isolating valve ISO-4 through a seventh pipeline B ', the servo cylinder 5 is simultaneously connected with a first control valve CV-1 and a second control valve CV-2 through an eighth pipeline C, the servo cylinder 5 of the redundant power assisting source 6 is simultaneously connected with a third control valve CV-3 and a fourth control valve CV-4 through a ninth pipeline C', the auxiliary brake oil pot 9 is communicated with the servo cylinder 5 of the redundant power assisting source 6 through a tenth pipeline D4 ', the brake oil pot 1 is communicated with the servo cylinder 5 of the power assisting source 10 through an eleventh pipeline D4, the pedal simulator 4 and the brake oil pot 1, the redundant pedal simulator 7 and the auxiliary brake oil pot 9 are respectively communicated through a twelfth pipeline D5 and a thirteenth pipeline D5', and the redundant pedal simulator valve 8 is communicated with the pedal simulator 4 through a twentieth pipeline D6;
the conventional power assisting module I further comprises normally-open valves NO controlled in one-to-one correspondence with each wheel, the four normally-open valves are respectively connected with a fourteenth pipeline A1, a fifteenth pipeline A2, a sixteenth pipeline B1 and a seventeenth pipeline B2, the fourteenth pipeline A1 and the fifteenth pipeline A2 are respectively communicated with a third control valve CV-3, a third isolating valve ISO-3 and a first control valve CV-1, the sixteenth pipeline B1 and the seventeenth pipeline B2 are respectively communicated with a fourth control valve CV-4, a fourth isolating valve ISO-4 and a second control valve CV-2, each wheel is further connected with four normally-closed valves NC in one-to-one correspondence, and the four normally-closed valves NC are connected with the brake oilcan 1 through an eighteenth pipeline E.
Check valves are installed on the tenth pipeline D4 'and the eleventh pipeline D4, so that oil in the tenth pipeline D4' and the eleventh pipeline D4 cannot flow back to the oil kettle due to the check valves.
The piston in the first cavity of the traditional brake master cylinder 2 is connected with a pedal displacement sensor SS, the piston in the second cavity of the traditional brake master cylinder is connected with a master cylinder pressure sensor SP1, the servo cylinders 5 are connected with servo cylinder pressure sensors SP2, and an external pedal angle sensor MPS is installed at the brake pedal 3.
As an embodiment of the present invention, after the normal use system is powered on, the pedal simulator 4 is powered on and opened, when the brake pedal 3 is stepped on, the first piston in the first cavity of the conventional master cylinder 2 moves, the pedal displacement sensor SS connected to the first piston detects the braking intention of the driver, the third isolation valve ISO-3 and the fourth isolation valve ISO-4 are closed, and the first control valve CV-1 and the second control valve CV-2 are opened; at the moment, the liquid in the first cavity of the traditional brake master cylinder 2 enters the pedal simulator 4 through the second pipeline F; the liquid in the second cavity of the traditional brake master cylinder 2 is sealed in the fourth pipeline B; meanwhile, a motor of the servo cylinder 5 is powered on, liquid in the servo cylinder 5 enters the first control valve CV-1 and the second control valve CV-2 through the eighth pipeline C, and enters the corresponding 4 wheels through the fourteenth pipeline A1, the fifteenth pipeline A2, the sixteenth pipeline B1 and the seventeenth pipeline B2 after passing through a normally open valve NO, so that actual braking force is formed.
And the role of the redundant module is: when the conventional power assisting module I has faults of driving unit failure, servo cylinder leakage, control failure and the like, and the brake power assisting is failed, the independent redundancy module II is started, and a third control valve CV-3 and a fourth control valve CV-4 of the redundancy module are opened; at this time, the liquid in the first cavity of the conventional brake master cylinder 2 enters the pedal simulator 4 through the second pipeline F; the liquid in the second cavity of the traditional brake master cylinder 2 is sealed in the fourth pipeline B; meanwhile, a motor of a servo cylinder 5 in the redundancy module II is electrified, liquid in the servo cylinder 5 enters a third control valve CV-3 and a fourth control valve CV-4 through a ninth pipeline C', one of the third control valve CV-3 and the fourth control valve CV-4 enters corresponding 4 wheels through a fourteenth pipeline A1, a fifteenth pipeline A2, a sixteenth pipeline B1 and a seventeenth pipeline B2 after passing through a normally open valve NO, and actual braking force is formed.
As a supplement, when the pedal simulator 4 of the conventional power-assisted module i fails, the redundant module ii is powered on, the redundant pedal simulator 7 is powered on and opened, and the brake pedal 3 is stepped on, the liquid in the first cavity of the conventional brake master cylinder 2 enters the redundant pedal simulator 7 through the third pipeline F', so that the phenomenon of short and hard pedal can be avoided.
Further, when the conventional power assisting module I fails, the redundant module II system is powered on, the redundant pedal simulator 7 is powered on and opened, and the brake pedal 3 is stepped down, the first piston in the first cavity of the conventional brake master cylinder 2 moves, the pedal stroke sensor SS connected with the first piston detects the braking intention of a driver, the third isolation valve ISO-3 and the fourth isolation valve ISO-4 in the redundant module II are closed, and the third control valve CV-3 and the fourth control valve CV-4 are opened at the same time; at the moment, the liquid in the first cavity of the traditional brake master cylinder 2 enters a redundant pedal simulator 7 in a redundant module II through a third pipeline F'; the liquid in the second cavity of the traditional brake master cylinder 2 is sealed in the fourth pipeline B; meanwhile, a motor of a servo cylinder 5 in the redundancy module II is electrified, liquid in the servo cylinder 5 enters a third control valve CV-3 and a fourth control valve CV-4 through a ninth pipeline C', one of the third control valve CV-3 and the fourth control valve CV-4 enters corresponding 4 wheels through a fourteenth pipeline A1, a fifteenth pipeline A2, a sixteenth pipeline B1 and a seventeenth pipeline B2 after passing through a normally open valve NO, and actual braking force is formed.
Further, when the conventional power assisting module I and the redundant module II of the system fail to be powered on simultaneously, the system is switched into a mechanical backup mode, the pedal simulator 4 and the redundant pedal simulator 7 are always closed, the first isolation valve ISO-1, the second isolation valve ISO-2, the third isolation valve ISO-3 and the fourth isolation valve ISO-4 are normally open, and the first control valve CV-1, the second control valve CV-2, the third control valve CV-3 and the fourth control valve CV-4 are normally closed; the liquid in the first cavity of the traditional brake master cylinder 2 passes through a first pipeline A, a sixth pipeline A', a third isolation valve ISO-3 and a first isolation valve ISO-1, and one of the liquid passes through a fourteenth pipeline A1 and a fifteenth pipeline A2 and enters a corresponding wheel through a normally open valve NO; the liquid in the second cavity of the conventional brake master cylinder 2 passes through the fourth pipeline B, the seventh pipeline B', the second isolation valve ISO-2 and the fourth isolation valve ISO-4, and one of the liquid passes through the sixteenth pipeline B1 and the seventeenth pipeline B2 to enter the corresponding wheel, so that the actual braking force is formed.
Then, when the wheel needs to be depressurized, the NO corresponding to the normally open valve is electrically closed, while the corresponding normally closed valve NC is electrically opened, and the high-pressure liquid normally closed valve NC and the eighteenth pipeline E return to the brake oil can 1, the operation being the same for each wheel.
When the brake fluid in the servo cylinder 5 of the conventional power assisting module I is continuously reduced, after the brake fluid in the servo cylinder 5 is completely discharged, the motor drives the piston in the servo cylinder 5 to retreat, the brake fluid in the brake oil pot 1 and the auxiliary brake oil pot 9 is supplemented with the brake fluid through the one-way valve, if the conventional power assisting module for brake assistance is still required to be in a fluid supplementing state at the moment, the conventional power assisting module cannot work normally, at the moment, the third control valve CV-3 and the fourth control valve CV-4 in the redundant module II are opened, and the motor in the redundant module II works to drive the servo cylinder 5 to pressurize the wheel cylinder, so that the normal brake assistance is realized.
The first cavity of the traditional brake master cylinder 2, the second cavity of the traditional brake master cylinder 2, the servo cylinder 5, the redundant pedal simulator 7 and the pedal simulator 4 are respectively subjected to liquid return and liquid supplement through corresponding pipelines.
In addition, the redundant power assisting source 6 and the power assisting source 10 each include a motor, a ball screw, a motor angle sensor, and a temperature sensor, and the rotation of the motor can be converted into the linear movement of the servo cylinder 5 through the ball screw.
In order to reduce the volume of the boosting system, a boosting source 10 of a conventional boosting module I, a conventional brake master cylinder 2, a pedal simulator 4 and an ECU are integrated in an integrated valve block, meanwhile, various pipelines of the conventional boosting module I are arranged in the integrated valve block, a valve system consisting of various valves comprises a plurality of different electromagnetic valves which are arranged at a certain position of the pipelines according to a specific position, so that the specific pedal feeling and the required braking deceleration of liquid according to the braking intention of a driver are ensured, and a redundancy module II is arranged outside the integrated valve block.
And the servo cylinders 5 on the conventional power-assisted module I and the redundant module II are communicated with the liquid leakage cavities on the integrated valve block through nineteenth pipelines G.
The first cavity of the conventional brake master cylinder 2 is communicated with the brake oil can 1 through a twenty-first pipeline D1.
The structure of the utility model is highly integrated and has good controllability; the brake output force is accurately controlled, and through a standby scheme, under the condition that the whole system is out of power, enough brake force can be provided, so that the whole vehicle is decelerated until the vehicle stops. Meanwhile, the pipeline control system and the pressure acquisition unit are combined in various ways, so that the system is suitable for vehicles with various vehicle conditions and different costs, and can meet various requirements of different manufacturers.
Claims (8)
1. The utility model provides an automatically controlled braking helping hand system of redundant module in area, includes conventional helping hand module (I) and redundant module (II), its characterized in that:
the conventional power assisting module (I) comprises a brake oil can (1), a power assisting source (10) with a servo cylinder (5), a traditional brake master cylinder (2) with a brake pedal (3), a pedal simulator (4) and an ECU (electronic control unit);
the redundancy module (II) comprises a redundancy boosting source (6), a redundancy pedal simulator (7) or a redundancy pedal simulator valve (8) and an auxiliary brake oil can (9);
the traditional brake master cylinder (2) is a tandem plunger cylinder, a first cavity of the traditional brake master cylinder is respectively connected with a first isolating valve (ISO-1), a pedal simulator (4) and a redundant pedal simulator (7) or a redundant pedal simulator valve (8) through a first pipeline (A), a second pipeline (F) and a third pipeline (F '), a second cavity of the traditional brake master cylinder (2) is connected with a second isolating valve (ISO-2) through a fourth pipeline (B), the first isolating valve (ISO-1) is connected with a third isolating valve (ISO-3) through a sixth pipeline (A '), the second isolating valve (ISO-2) is connected with a fourth isolating valve (ISO-4) through a seventh pipeline (B '), the servo cylinder (5) is simultaneously connected with a first control valve (CV-1) and a second control valve (CV-2) through an eighth pipeline (C), the servo cylinder (5) of the redundant power assisting source (6) is simultaneously connected with a third control valve (CV-3) and a fourth control valve (CV-4) through a ninth pipeline (C '), the auxiliary brake oil pot (9) is communicated with the servo cylinder (5) of the redundant power assisting source (6) through a tenth pipeline (D4 '), the brake oil pot (1) is communicated with the servo cylinder (5) of the power assisting source (10) through an eleventh pipeline (D4), the pedal simulator (4) is communicated with the brake oil pot (1) and the redundant pedal simulator (7) is communicated with the auxiliary brake oil pot (9) through a twelfth pipeline (D5) and a thirteenth pipeline (D5 '), and the redundant pedal simulator valve (8) is communicated with the pedal simulator (4) through a twentieth pipeline (D6);
the conventional power assisting module (I) further comprises normally open valves (NO) which are controlled in a one-to-one correspondence mode with each wheel, the four normally open valves are respectively connected with a fourteenth pipeline (A1), a fifteenth pipeline (A2), a sixteenth pipeline (B1) and a seventeenth pipeline (B2), the fourteenth pipeline (A1) and the fifteenth pipeline (A2) are communicated with a third control valve (CV-3), a third isolation valve (ISO-3) and a first control valve (CV-1), and the sixteenth pipeline (B1) and the seventeenth pipeline (B2) are communicated with the fourth control valve (CV-4), the fourth isolating valve (ISO-4) and the second control valve (CV-2), each wheel is further connected with four normally-closed valves (NC) in a one-to-one correspondence mode, and the four normally-closed valves (NC) are connected with the brake oil pot (1) through an eighteenth pipeline (E).
2. The electronically controlled brake boosting system with redundant modules according to claim 1, wherein: check valves are arranged on the tenth pipeline (D4') and the eleventh pipeline (D4).
3. The electronically controlled brake boosting system with redundant modules according to claim 1, wherein: the piston in the first cavity of the traditional brake master cylinder (2) is connected with a pedal displacement sensor (SS), the piston in the second cavity of the traditional brake master cylinder is connected with a master cylinder pressure sensor (SP1), and the servo cylinders (5) are connected with servo cylinder pressure sensors (SP 2).
4. The electronically controlled brake boosting system with redundant modules according to claim 3, wherein: and an external pedal angle sensor (MPS) is arranged at the brake pedal (3).
5. The electronically controlled brake boosting system with redundant modules according to any one of claims 1 to 4, wherein: the redundant power assisting source (6) and the power assisting source (10) respectively comprise a motor, a ball screw, a motor angle sensor and a temperature sensor.
6. The electronically controlled brake boosting system with redundant modules according to claim 1, wherein: a power assisting source (10) of the conventional power assisting module (I), a traditional brake master cylinder (2), a pedal simulator (4) and an ECU are integrated in an integrated valve block, and a redundant module (II) is arranged on the outer side of the integrated valve block.
7. The electronically controlled brake boosting system with redundant modules according to claim 6, wherein: and the servo cylinders (5) on the conventional power-assisted module (I) and the redundant module (II) are communicated with the liquid leakage cavities on the integrated valve block through nineteenth pipelines (G).
8. The electronically controlled brake boosting system with redundant modules according to claim 1, wherein: the first cavity of the traditional brake master cylinder (2) is communicated with the brake oil can (1) through a twenty-first pipeline (D1).
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| CN201922250468.7U CN211995537U (en) | 2019-12-16 | 2019-12-16 | Electric control brake power assisting system with redundant modules |
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| CN201922250468.7U CN211995537U (en) | 2019-12-16 | 2019-12-16 | Electric control brake power assisting system with redundant modules |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112557938A (en) * | 2020-12-21 | 2021-03-26 | 宁波拓普集团股份有限公司 | Diagnosis method for power supply circuit of intelligent brake system |
| CN112638730A (en) * | 2020-12-03 | 2021-04-09 | 华为技术有限公司 | Hydraulic adjusting unit, brake-by-wire system and control method |
| CN113954803A (en) * | 2021-11-29 | 2022-01-21 | 万向钱潮股份有限公司 | Electronic braking boosting system for large vehicle |
| CN113954802A (en) * | 2021-11-19 | 2022-01-21 | 万向钱潮股份有限公司 | Braking device with double sets of electronic braking power-assisted modules |
| WO2024113891A1 (en) * | 2022-11-30 | 2024-06-06 | 比亚迪股份有限公司 | Vehicle brake system and vehicle having same |
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2019
- 2019-12-16 CN CN201922250468.7U patent/CN211995537U/en active Active
Cited By (5)
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| CN113954802A (en) * | 2021-11-19 | 2022-01-21 | 万向钱潮股份有限公司 | Braking device with double sets of electronic braking power-assisted modules |
| CN113954803A (en) * | 2021-11-29 | 2022-01-21 | 万向钱潮股份有限公司 | Electronic braking boosting system for large vehicle |
| WO2024113891A1 (en) * | 2022-11-30 | 2024-06-06 | 比亚迪股份有限公司 | Vehicle brake system and vehicle having same |
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