A brake device

Abstract

The utility model relates to automatic driving vehicle brake technical field discloses a kind of brake devices, comprising: first control part;Second control part;Gas storage part;First brake part, first air inlet is communicated with gas storage part, first control port is electrically connected with first control part, for receiving the electrical signal of first control part, to connect first air inlet with first air outlet;First on-off part, second air inlet is communicated with gas storage part, second control port is electrically connected with second control part, for receiving the electrical signal of second control part, to connect second air inlet with second air outlet;Wheel, the brake air cavity of wheel is communicated with first air outlet and second air outlet, for braking wheel.The utility model can carry out redundant braking to wheel with first on-off part when first control part fails, to avoid the failure of first control part in extreme case, and brake device loses active deceleration ability, causes security risk to vehicle in travel.

Description

Technical Field

[0001] This utility model relates to the field of braking technology for autonomous vehicles, and specifically to a braking device. Background Technology

[0002] As a core component of automotive safety, the braking system is typically integrated into the vehicle's chassis structure. Its core function is to convert frictional energy into vehicle deceleration and parking. With the development of autonomous driving technology, current Level 3 and above autonomous vehicles generally employ Electronic Braking Systems (EBS) as the execution vehicle. This system integrates high-precision solenoid valves, pressure sensors, and an Electronic Control Unit (ECU) to achieve millisecond-level dynamic response and precise closed-loop control of braking pressure. Therefore, optimizing the braking performance of autonomous vehicles mainly relies on the coordinated upgrading of the EBS brake valve's hardware performance (such as valve body pressure resistance rating and sealing reliability) and intelligent control strategies (such as predictive braking algorithms and multi-objective collaborative optimization).

[0003] However, under extreme conditions, such as valve body overheating due to continuous high-intensity braking, failure of sealing materials in low-temperature environments, and signal disturbances caused by electromagnetic interference, the EBS brake valve may experience functional degradation or even complete failure. Once the core braking unit fails, the autonomous driving system will lose its active deceleration capability and can only rely on mechanical redundancy devices (such as traditional handbrake cables) or passive safety systems (such as collision energy absorption structures) to mitigate limited risks, which can easily pose safety hazards to vehicles in motion. Utility Model Content

[0004] In view of this, the present invention provides a braking device to solve the problem that when the existing EBS brake valve fails, the automatic driving system loses its active deceleration capability, which can easily cause safety hazards to the vehicle in motion.

[0005] This utility model provides a braking device for braking a vehicle, comprising: First control element; Second control element; Gas storage components; The first braking component includes a first air inlet, a first air outlet, and a first control port. The first air inlet is connected to the air storage component, and the first control port is electrically connected to the first control component to receive an electrical signal from the first control component to connect the first air inlet and the first air outlet. The first switching element includes a second air inlet, a second air outlet, and a second control port. The second air inlet is connected to the gas storage device, and the second control port is electrically connected to the second control device to receive an electrical signal from the second control device to connect the second air inlet and the second air outlet. The wheel has a brake air chamber that is connected to the first air outlet and the second air outlet for braking the wheel.

[0006] Beneficial effects: By setting a second control component, when the first control component fails, it can cooperate with the first switching component to perform redundant braking on the wheels, thereby avoiding the failure of the first control component in extreme cases, which would cause the braking device to lose its active deceleration capability and pose a safety hazard to the vehicle in motion.

[0007] In one optional embodiment, the braking device includes: The second braking component includes a third air inlet, a third air outlet, and a third control port. The third air inlet is connected to the first air outlet and the second air outlet. The third air outlet is connected to the brake air chamber of the wheel. The third control port is electrically connected to the first control component and is used to receive electrical signals from the first control component to adjust the opening of the third air outlet.

[0008] Beneficial effect: By setting a second braking component, the opening of the third air outlet can be adjusted according to the braking condition of the wheels to avoid wheel lock-up and potential danger.

[0009] In one optional embodiment, the braking device includes: The connecting component includes a fourth air inlet, a fifth air inlet, and a fourth air outlet. The fourth air inlet is connected to the first air outlet, the fifth air inlet is connected to the second air outlet, and the fourth air outlet is connected to the brake air chamber of the wheel.

[0010] Beneficial effects: By setting up connecting parts, the structural and gas path design can be simplified, making assembly and maintenance easier.

[0011] In one optional embodiment, the fourth air inlet and the fourth air outlet, as well as the fifth air inlet and the fourth air outlet, are both unidirectional channels.

[0012] Beneficial effects: By setting one-way channels between the fourth air inlet and the fourth air outlet, as well as between the fifth air inlet and the fourth air outlet, the two channels can be isolated to improve safety and accuracy during braking.

[0013] In one alternative embodiment, the first braking element includes a sixth air inlet; The braking device includes: The second switching device includes a seventh air inlet, a fifth air outlet, and a fourth control port. The seventh air inlet is connected to the gas storage device, the fifth air outlet is connected to the sixth air inlet, and the fourth control port is electrically connected to the second control device to receive the electrical signal from the second control device, so as to connect the seventh air inlet and the fifth air outlet, and then connect the first air inlet and the first air outlet.

[0014] Beneficial effect: By setting a second switch, the first air inlet and the first air outlet can be connected in cooperation with the second control component only when the first brake component cannot receive the electrical signal from the first control component, thereby improving the utilization rate of the first brake component.

[0015] In one optional embodiment, the first switching element and / or the second switching element are normally closed structures; And / or, the first on / off element and / or the second on / off element is a solenoid valve.

[0016] In one optional embodiment, the first air inlet and / or the second air inlet and / or the seventh air inlet are normally open to the air storage device.

[0017] Beneficial effects: By setting the first air inlet and / or the second air inlet and / or the seventh air inlet to a normally open state with the air storage component, the speed at which gas enters the first braking component and / or the first on / off component and / or the second on / off component can be shortened, thereby improving braking efficiency.

[0018] In one optional embodiment, the first brake element includes at least two first air outlets, and the at least two first air outlets are configured to correspond one-to-one with the wheels; And / or, at least two second brake elements are provided, and at least two second brake elements are provided in a one-to-one correspondence with the wheels; And / or, the second braking component is an ABS solenoid valve.

[0019] Beneficial effects: By setting the second braking component to correspond one-to-one with each wheel, the braking status of each wheel can be monitored individually, thereby improving the safety of the vehicle during braking.

[0020] In one alternative embodiment, the braking device includes two braking units, each of the braking units including a first braking element and a first switching element, and each of the braking units is used to brake the two wheels.

[0021] Beneficial effects: By setting up two braking units, it is possible to adjust according to the different braking states of the front and rear wheels, thereby improving the braking effect.

[0022] In one optional embodiment, the braking device includes two air storage units, each of which is connected to the first braking element and the first switching element of a braking unit. And / or, the first control element is an electronic controller; And / or, the second control component is a vehicle controller; And / or, the first braking element is an EBS brake valve.

[0023] Beneficial effects: By setting two air storage components, the distance between the air storage components and the first braking component and the first switching component can be shortened, thereby improving braking efficiency. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of a braking device according to an embodiment of the present utility model.

[0026] Explanation of reference numerals in the attached figures: 1. First control component; 2. Second control component; 3. Air storage component; 4. First braking component; 41. First air inlet; 42. First air outlet; 43. First control port; 44. Sixth air inlet; 5. First on / off component; 51. Second air inlet; 52. Second air outlet; 53. Second control port; 6. Wheel; 7. Second braking component; 71. Third air inlet; 72. Third air outlet; 73. Third control port; 8. Connecting component; 81. Fourth air inlet; 82. Fifth air inlet; 83. Fourth air outlet; 9. Second on / off component; 91. Seventh air inlet; 92. Fifth air outlet; 93. Fourth control port. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] The following is combined Figure 1 The following describes embodiments of the present invention.

[0029] According to an embodiment of the present invention, a braking device is provided for braking a vehicle, comprising: a first control element 1; a second control element 2; an air storage element 3; a first braking element 4, including a first air inlet 41, a first air outlet 42, and a first control port 43, wherein the first air inlet 41 is connected to the air storage element 3, and the first control port 43 is electrically connected to the first control element 1 for receiving an electrical signal from the first control element 1 to connect the first air inlet 41 and the first air outlet 42; a first switching element 5, including a second air inlet 51, a second air outlet 52, and a second control port 53, wherein the second air inlet 51 is connected to the air storage element 3, and the second control port 53 is electrically connected to the second control element 2 for receiving an electrical signal from the second control element 2 to connect the second air inlet 51 and the second air outlet 52; and a wheel 6, wherein the braking air chamber of the wheel 6 is connected to the first air outlet 42 and the second air outlet 52 for braking the wheel 6.

[0030] By setting the second control element 2, when the first control element 1 fails, it can cooperate with the first on / off element 5 to perform redundant braking on the wheel 6, thereby avoiding the failure of the first control element 1 in extreme cases, which would cause the braking device to lose its active deceleration capability and pose a safety hazard to the vehicle in motion.

[0031] In one embodiment, the first control element 1 is an electronic controller. As an alternative implementation, the first control element 1 can also be a domain controller or a central computing platform, or other control structures, without further limitations.

[0032] In one embodiment, the second control element 2 is a vehicle controller. As an alternative implementation, the second control element 2 can also be a domain controller or a central computing platform, or other control structures; no further restrictions are imposed here.

[0033] In one embodiment, the gas storage component 3 is a gas tank. As an alternative implementation, the gas storage component 3 can also be other gas storage structures such as gas cylinders, and no further restrictions are imposed here.

[0034] In one embodiment, the first braking element 4 is an EBS brake valve. As an alternative implementation, the first braking element 4 can also be other braking structures such as an electro-hydraulic brake valve, and no further restrictions are imposed here.

[0035] In one embodiment, the first air inlet 41 and the air storage device 3 are normally open. By making the first air inlet 41 and the air storage device 3 normally open, the speed at which gas enters the first braking device 4 can be shortened, thereby improving braking efficiency. As an alternative implementation, the first air inlet 41 and the air storage device 3 can also be normally closed, with the air storage device 3 electrically connected to the first control device 1 to receive an electrical signal from the first control device 1 to open the air storage device 3 and supply air to the first air inlet 41.

[0036] like Figure 1 As shown, in one embodiment, the first brake element 4 includes two first air outlets 42, each corresponding to one of the two wheels 6. Alternatively, the first brake element 4 may include four first air outlets 42, each corresponding to one of the four wheels 6.

[0037] In one embodiment, the first on / off element 5 is a normally closed structure; the first on / off element 5 is a first solenoid valve. When the second control element 2 cooperates with the first on / off element 5 to perform redundant braking on the wheel 6, the first on / off element 5 provides braking force to the wheel 6 with maximum gas pressure. As an alternative implementation, the first on / off element 5 can also be an on / off valve, a regulating valve, or other structures, without further limitations.

[0038] In one embodiment, the second air inlet 51 and the air storage device 3 are normally open. By making the second air inlet 51 and the air storage device 3 normally open, the speed at which gas enters the first on / off device 5 can be shortened, thereby improving braking efficiency. As an alternative implementation, the second air inlet 51 and the air storage device 3 can also be normally closed, with the air storage device 3 electrically connected to the first control device 1 to receive an electrical signal from the first control device 1 to open the air storage device 3 and supply air to the second air inlet 51.

[0039] like Figure 1 As shown, in one embodiment, the braking device includes two braking units, each including a first braking element 4 and a first switching element 5. Each braking unit is used to brake two wheels 6. One braking unit brakes the two front wheels, and the other braking unit brakes the two rear wheels. By providing two braking units, adjustments can be made according to different braking states of the front and rear wheels, thereby improving the braking effect. As an alternative implementation, the braking device may also include four braking units, each braking unit braking one wheel 6.

[0040] like Figure 1 As shown, in one embodiment, the braking device includes two air storage components 3, each air storage component 3 being connected to a first braking component 4 and a first switching component 5 of a braking unit. By providing two air storage components 3, the distance between the air storage component 3 and the first braking component 4 and the first switching component 5 can be shortened, thereby improving braking efficiency. As an alternative implementation, the braking device may also include only one air storage component 3 or four air storage components 3; the specific number is determined according to the actual situation, and no further restrictions are imposed here.

[0041] like Figure 1As shown, in one embodiment, the braking device includes a second braking element 7, comprising a third air inlet 71, a third air outlet 72, and a third control port 73. The third air inlet 71 is connected to the first air outlet 42 and the second air outlet 52, the third air outlet 72 is connected to the braking air chamber of the wheel 6, and the third control port 73 is electrically connected to the first control element 1 to receive an electrical signal from the first control element 1 to adjust the opening of the third air outlet 72. The second braking element 7 is an ABS (Anti-lock Braking System) solenoid valve. By setting the second braking element 7, the opening of the third air outlet 72 can be adjusted according to the braking condition of the wheel 6 to prevent the wheel 6 from locking up and causing danger. As an alternative implementation, the second braking element 7 can also be an inertia valve or a proportional valve, or other adjustment structures, which are not limited here.

[0042] like Figure 1 As shown, in one embodiment, four second brake elements 7 are provided, and each of the four second brake elements 7 is arranged in a one-to-one correspondence with a wheel 6. By arranging the second brake elements 7 in a one-to-one correspondence with the wheels 6, the braking status of each wheel 6 can be monitored individually, thereby improving the safety of the vehicle during braking. As an alternative implementation, the second brake elements 7 may also be arranged in a one-to-one correspondence with only the two front wheels or only with only the two rear wheels; no further restrictions are imposed here.

[0043] like Figure 1 As shown, in one embodiment, the braking device includes a connecting member 8, comprising a fourth air inlet 81, a fifth air inlet 82, and a fourth air outlet 83. The fourth air inlet 81 is connected to the first air outlet 42, the fifth air inlet 82 is connected to the second air outlet 52, and the fourth air outlet 83 is connected to the brake air chamber of the wheel 6. By providing the connecting member 8, the structure and air circuit design can be simplified, facilitating assembly and maintenance. As an alternative implementation, the connecting member 8 may not be provided.

[0044] like Figure 1 As shown, in one embodiment, the fourth air outlet 83 is connected to the third air inlet 71; four connecting members 8 are provided, and the four connecting members 8 are arranged one-to-one with the second braking member 7.

[0045] In one embodiment, the space between the fourth air inlet 81 and the fourth air outlet 83, as well as the space between the fifth air inlet 82 and the fourth air outlet 83, are both unidirectional channels. By making the space between the fourth air inlet 81 and the fourth air outlet 83, as well as the space between the fifth air inlet 82 and the fourth air outlet 83, the two channels can be isolated, thereby improving safety and accuracy during braking.

[0046] like Figure 1As shown, in one embodiment, the first braking element 4 includes a sixth air inlet 44; the braking device includes a second switching element 9, including a seventh air inlet 91, a fifth air outlet 92 and a fourth control port 93. The seventh air inlet 91 is connected to the air storage element 3, the fifth air outlet 92 is connected to the sixth air inlet 44, and the fourth control port 93 is electrically connected to the second control element 2 for receiving electrical signals from the second control element 2 to connect the seventh air inlet 91 and the fifth air outlet 92, thereby connecting the first air inlet 41 and the first air outlet 42.

[0047] By providing a second switching element 9, the first brake element 4 can be connected to the first air inlet 41 and the first air outlet 42 only when the first brake element 4 cannot receive the electrical signal from the first control element 1, thereby improving the utilization rate of the first brake element 4. Alternatively, the first control port 43 can be electrically connected to the second control element 2 to receive the electrical signal from the second control element 2, thereby connecting the first air inlet 41 and the first air outlet 42.

[0048] like Figure 1 As shown, each braking unit includes a second on / off element 9; the second on / off element 9 is a normally closed structure; the second on / off element 9 is a second solenoid valve. As an alternative implementation, the second on / off element 9 can also be an on / off valve or a regulating valve, or other structures, without further restrictions.

[0049] In one embodiment, the seventh air inlet 91 and the air storage device 3 are normally open. By making the seventh air inlet 91 and the air storage device 3 normally open, the speed at which gas enters the second on / off device 9 can be shortened, thereby improving braking efficiency. As an alternative implementation, the seventh air inlet 91 and the air storage device 3 can also be normally closed, with the air storage device 3 electrically connected to the first control device 1 to receive an electrical signal from the first control device 1 to open the air storage device 3 and supply air to the seventh air inlet 91.

[0050] In one embodiment, nylon hoses are used to connect the air reservoir 3 to the first brake 4, the air reservoir 3 to the first switch 5, the air reservoir 3 to the second switch 9, the first brake 4 to the connecting member 8, the first switch 5 to the connecting member 8, the connecting member 8 to the second brake 7, and the second brake 7 to the brake air chamber of the wheel 6. As an alternative implementation, other connecting structures such as steel pipes can also be used to connect the air reservoir 3 to the first brake 4, the air reservoir 3 to the first switch 5, the air reservoir 3 to the second switch 9, the first brake 4 to the connecting member 8, the first switch 5 to the connecting member 8, the connecting member 8 to the second brake 7, and the second brake 7 to the brake air chamber of the wheel 6; no further restrictions are imposed here.

[0051] In one embodiment, the braking principle of the braking device is as follows: Under normal conditions, the electronic controller sends braking deceleration requests of different magnitudes to the EBS brake valve to connect the first air inlet 41 and the first air outlet 42. The gas in the air storage device 3 passes through the ABS solenoid valve and reaches the brake air chamber of the wheel 6 to provide adjustable braking force. When the electrical signal between the electronic controller and the EBS brake valve fails, the vehicle controller sends a braking deceleration request to the second solenoid valve to connect the seventh air intake 91 and the fifth air outlet 92, so that the air storage device 3 supplies air to the sixth air intake 44. When the EBS brake valve does not receive the braking deceleration request from the electronic controller and there is air in the sixth air intake 44, the first air intake 41 and the first air outlet 42 are connected. The gas in the air storage device 3 passes through the ABS solenoid valve and reaches the brake air chamber of the wheel 6 to brake, so as to provide an adjustable braking force. When the EBS brake valve itself fails, the vehicle controller sends a braking deceleration request to the first solenoid valve to connect the second air inlet 51 and the second air outlet 52. The gas in the air storage device 3 passes through the ABS solenoid valve and reaches the brake chamber of the wheel 6 to provide maximum braking force.

[0052] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A braking device for braking a vehicle, characterized in that, include: First control element (1); Second control element (2); Gas storage component (3); The first braking component (4) includes a first air inlet (41), a first air outlet (42) and a first control port (43). The first air inlet (41) is connected to the air storage component (3), and the first control port (43) is electrically connected to the first control component (1) to receive the electrical signal of the first control component (1) to connect the first air inlet (41) and the first air outlet (42). The first switching element (5) includes a second air inlet (51), a second air outlet (52), and a second control port (53). The second air inlet (51) is connected to the gas storage element (3), and the second control port (53) is electrically connected to the second control element (2) to receive the electrical signal of the second control element (2) to connect the second air inlet (51) and the second air outlet (52). The wheel (6) has a brake air chamber that is connected to the first air outlet (42) and the second air outlet (52) for braking the wheel (6).

2. The braking device according to claim 1, characterized in that, The braking device includes: The second braking component (7) includes a third air inlet (71), a third air outlet (72) and a third control port (73). The third air inlet (71) is connected to the first air outlet (42) and the second air outlet (52). The third air outlet (72) is connected to the brake air chamber of the wheel (6). The third control port (73) is electrically connected to the first control component (1) and is used to receive the electrical signal from the first control component (1) to adjust the opening of the third air outlet (72).

3. The braking device according to claim 1, characterized in that, The braking device includes: The connecting component (8) includes a fourth air inlet (81), a fifth air inlet (82) and a fourth air outlet (83). The fourth air inlet (81) is connected to the first air outlet (42), the fifth air inlet (82) is connected to the second air outlet (52), and the fourth air outlet (83) is connected to the brake air chamber of the wheel (6).

4. The braking device according to claim 3, characterized in that, The fourth air inlet (81) and the fourth air outlet (83), as well as the fifth air inlet (82) and the fourth air outlet (83), are both unidirectional channels.

5. The braking device according to claim 1, characterized in that, The first braking element (4) includes a sixth air inlet (44); The braking device includes: The second switching component (9) includes a seventh air inlet (91), a fifth air outlet (92), and a fourth control port (93). The seventh air inlet (91) is connected to the gas storage component (3), the fifth air outlet (92) is connected to the sixth air inlet (44), and the fourth control port (93) is electrically connected to the second control component (2) to receive the electrical signal from the second control component (2) to connect the seventh air inlet (91) and the fifth air outlet (92), thereby connecting the first air inlet (41) and the first air outlet (42).

6. The braking device according to claim 5, characterized in that, The first switching element (5) and / or the second switching element (9) are normally closed structures; And / or, the first on / off element (5) and / or the second on / off element (9) are solenoid valves.

7. The braking device according to claim 5, characterized in that, The first air inlet (41) and / or the second air inlet (51) and / or the seventh air inlet (91) are normally open to the air storage device (3).

8. The braking device according to claim 2, characterized in that, The first brake component (4) includes at least two first air outlets (42), and the at least two first air outlets (42) are arranged in a one-to-one correspondence with the wheel (6); And / or, at least two second brake elements (7) are provided, and at least two second brake elements (7) are provided in a one-to-one correspondence with the wheels (6); And / or, the second braking element (7) is an ABS solenoid valve.

9. The braking device according to any one of claims 1 to 7, characterized in that, The braking device includes two braking units, each of which includes a first braking element (4) and a first switching element (5), and each braking unit is used to brake the two wheels (6).

10. The braking device according to claim 9, characterized in that, The braking device includes two air storage components (3), each of which is connected to the first braking component (4) and the first switching component (5) of a braking unit. And / or, the first control element (1) is an electronic controller; And / or, the second control unit (2) is a vehicle controller; And / or, the first braking element (4) is an EBS braking valve.

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