Brake control system and vehicle

Abstract

The invention discloses a brake control system and a vehicle, and the brake control system comprises a wheel cylinder which is used for braking wheels; the energy storage device is communicated with the wheel cylinder and is used for pressurizing the wheel cylinder; and the first braking module communicates with the energy storage device and is used for pressurizing the energy storage device. According to the brake control system, the energy storage device can be pressurized and charged by arranging the first brake module, and when the pressure of the energy storage device reaches the set value, the energy storage device can pressurize the wheel cylinders, so that the wheel cylinders can brake the wheels, the brake function of the vehicle is achieved, the use safety of the vehicle is improved, and the service life of the vehicle is prolonged. By additionally arranging the energy storage device on the basis of arranging the EPB caliper brake, the ramp parking capacity of the vehicle can be improved, and long-time ramp parking of the vehicle when the slope is large is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle manufacturing, and in particular to a braking control system and a vehicle having the braking control system. Background Art

[0002] With the development of new energy vehicle models, the usage scenarios of new energy vehicles have become more diversified, and the demand for parking on steep slopes is getting stronger and stronger. However, the current intelligent power braking system cannot meet the needs of long-term parking on large slopes and can only participate in short-term parking and service braking functions. There is room for improvement. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a braking control system, which can realize the braking function of a vehicle, improve the safety of the vehicle, and improve the slope parking ability of the vehicle, so as to realize long-term slope parking of the vehicle when the slope is large.

[0004] A braking control system according to an embodiment of the present invention includes: a wheel cylinder for braking a wheel; an accumulator, the accumulator being connected to the wheel cylinder and being used to pressurize the wheel cylinder; and a first braking module, the first braking module being connected to the accumulator and being used to pressurize the accumulator.

[0005] According to the braking control system of the embodiment of the present invention, by setting the first braking module, the energy accumulator can be pressurized and charged. When the pressure of the energy accumulator reaches the set value, the energy accumulator can pressurize the wheel cylinder so that the wheel cylinder can brake the wheel, so as to realize the braking function of the vehicle and improve the safety of the vehicle. In addition, by adding an energy accumulator on the basis of setting the EPB caliper brake, the slope parking ability of the vehicle can be improved, so that the vehicle can be parked on a slope for a long time when the slope is large.

[0006] The braking control system according to some embodiments of the present invention comprises a third normally open valve, wherein the third normally open valve is arranged between the accumulator and the first brake module and / or between the accumulator and the wheel cylinder.

[0007] According to some embodiments of the present invention, a brake control system comprises a second brake module, which is connected to the wheel cylinder and is used for applying brake pressure to the wheel cylinder when the first brake module fails.

[0008] The brake control system according to some embodiments of the present invention includes a fourth normally closed valve disposed between the second brake module and the wheel cylinder.

[0009] According to the braking control system of some embodiments of the present invention, the second braking module is communicated with the energy accumulator, and a fifth normally closed valve is further provided between the second braking module and the energy accumulator.

[0010] According to some embodiments of the present invention, the brake control system comprises a cylinder simulation module, and the cylinder simulation module is respectively connected to the second brake module and the wheel cylinder.

[0011] According to some embodiments of the present invention, the braking control system includes a first normally closed valve, a seventh normally closed valve is provided between the first brake module and the wheel cylinder, and the first normally closed valve is arranged between the oil cylinder simulation module and the wheel cylinder and / or between the oil cylinder simulation module and the seventh normally closed valve.

[0012] According to some embodiments of the present invention, the brake control system comprises a third normally closed valve, and the third normally closed valve is arranged between the cylinder simulation module and the second brake module.

[0013] According to the brake control system of some embodiments of the present invention, the first brake module is further communicated with the wheel cylinder for applying pressure to the wheel cylinder.

[0014] According to some embodiments of the present invention, the braking control system has at least one of a normal driving braking mode, a hill-charging parking mode, and a driving braking mode when the first braking module fails.

[0015] According to the braking control system of some embodiments of the present invention, in the normal driving braking mode, the driver presses the brake pedal, the seventh normally closed valve opens after the vehicle is powered on, the cylinder simulation module simulates the brake pedal force and transmits it to the first brake module, the first brake module pressurizes the wheel cylinder, and the wheel cylinder brakes the wheel.

[0016] According to the braking control system of some embodiments of the present invention, in the ramp energized parking mode, the seventh normally closed valve opens after the vehicle is powered on, the driver steps on the brake pedal, the first braking module charges and pressurizes the wheel cylinder and the accumulator, and the wheel cylinder brakes the wheel.

[0017] According to the braking control system of some embodiments of the present invention, after the pressures of the energy accumulator and the wheel cylinder reach extreme values, the vehicle completes energy charging, the first braking module controls the seventh normally closed valve to close, and the wheel cylinder locks the wheel to achieve parking.

[0018] According to the braking control system of some embodiments of the present invention, the first braking module includes a main motor. In the driving braking mode when the first braking module fails, when the main motor fails, the seventh normally closed valve and the third normally open valve are closed, the first normally closed valve is opened, the driver presses the brake pedal, the cylinder simulation module pressurizes the wheel cylinder, and the wheel cylinder brakes the wheel.

[0019] According to the braking control system of some embodiments of the present invention, the first braking module includes a main controller. In the driving braking mode when the first braking module fails, when the main controller fails, the third normally open valve and the seventh normally closed valve are closed, the second braking module controls the third normally closed valve and the fourth normally closed valve to open, the driver steps on the brake pedal, the cylinder simulation module simulates the brake pedal force and transmits it to the second braking module, the second braking module pumps out the liquid in the brake fluid pot and pressurizes the wheel cylinder, and the wheel cylinder brakes the wheel.

[0020] The present invention also provides a vehicle.

[0021] A vehicle according to an embodiment of the present invention comprises a braking control system as described in any one of the above embodiments.

[0022] According to the vehicle of the embodiment of the present invention, a braking control system is provided in the vehicle. By providing a first braking module, the energy accumulator can be pressurized and charged. When the pressure of the energy accumulator reaches a set value, the energy accumulator can pressurize the wheel cylinder so that the wheel cylinder can brake the wheel, thereby realizing the braking function of the vehicle and improving the safety of the vehicle. In addition, by adding an energy accumulator on the basis of providing an EPB caliper brake, the slope parking ability of the vehicle can be improved, thereby realizing long-term slope parking of the vehicle when the slope is large.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0025] Figure 1 is a schematic diagram of a brake control system according to an embodiment of the present invention;

[0026] Figure 2 is a schematic diagram of a brake control system in a normal service braking mode according to an embodiment of the present invention;

[0027] Figure 3 is a schematic diagram of a braking control system in a ramp charging parking mode according to an embodiment of the present invention;

[0028] Figure 4 is a schematic diagram of a hill parking brake control system according to an embodiment of the present invention;

[0029] Figure 5 The principle of the service braking mode when the first brake module fails in a braking control system according to an embodiment of the present invention is Figure 1 ;

[0030] Figure 6 The principle of the service braking mode when the first brake module fails in a braking control system according to an embodiment of the present invention is Figure 2 .

[0031] Reference numerals:

[0032] Braking control system 100,

[0033] The first brake module 1, the main motor 11, the main controller 12, the seventh normally closed valve 13,

[0034] Energy storage device 2, third normally open valve 21,

[0035] Cylinder simulation module 4, first normally closed valve 41, connecting oil circuit 42, first normally open valve 421, third normally closed valve 43, simulation cylinder 44,

[0036] Simulated brake oil circuit 5, second normally closed valve 51,

[0037] The second brake module 6, the auxiliary motor 61, the fourth normally closed valve 611, the fifth normally closed valve 612, the auxiliary oil return line 62, the second normally open valve 621,

[0038] Main oil return circuit 7, sixth normally closed valve 71, brake pedal 8, wheel cylinder 9, fourth normally open valve 91, one-way valve 92, wheel 93, brake fluid pot 10. DETAILED DESCRIPTION

[0039] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] Reference below Figure 1-Figure 6 A braking control system 100 according to an embodiment of the present invention is described. By setting a first braking module 1, the energy accumulator 2 can be pressurized and charged. When the pressure of the energy accumulator 2 reaches a set value, the energy accumulator 2 can pressurize the wheel cylinder 9, so that the wheel cylinder 9 can brake the wheel 93, so as to realize the braking function of the vehicle and improve the safety of the vehicle. In addition, by adding the energy accumulator 2 on the basis of setting the EPB caliper brake, the slope parking ability of the vehicle can be improved, so that the vehicle can be parked on a slope for a long time when the slope is large.

[0043] like Figure 1-Figure 6 As shown, a brake control system 100 according to an embodiment of the present invention includes: a wheel cylinder 9 , an energy accumulator 2 and a first brake module 1 .

[0044] The wheel cylinder 9 is used to brake the wheel 93 ; the accumulator 2 is connected to the wheel cylinder 9 for pressurizing the wheel cylinder 9 ; the first brake module 1 is connected to the accumulator 2 for pressurizing the accumulator 2 .

[0045] Specifically, the braking control system 100 is used to realize the braking function of the vehicle. The braking control system 100 includes a wheel cylinder 9, an accumulator 2 and a first braking module 1. The wheel cylinder 9 is used to brake the wheel 93 to realize the braking function of the vehicle. The accumulator 2 is used to store pressure for release when needed. The accumulator 2 is connected to the wheel cylinder 9 so that the accumulator 2 can transfer pressure to the wheel cylinder 9 when needed to pressurize the wheel cylinder 9 so that the wheel cylinder 9 can brake the wheel 93 to realize the braking function of the vehicle and improve the safety of the vehicle. The first braking module 1 is used to provide braking pressure. The first braking module 1 is connected to the accumulator 2 so that the brake fluid in the first braking module 1 can flow to the accumulator 2 to pressurize and charge the accumulator 2 to ensure that the accumulator 2 can pressurize the wheel cylinder 9.

[0046] Among them, the pressure of the energy accumulator 2 has a set value. When the pressure of the energy accumulator 2 reaches the set value, the hydraulic oil in the energy accumulator 2 can flow to the wheel cylinder 9 to release the pressure to pressurize the wheel cylinder 9, thereby realizing the braking function of the vehicle and improving the safety of the vehicle.

[0047] Also, it should be noted that the braking control system 100 of the present invention also includes an EPB caliper brake, which can brake the wheel 93 by clamping the wheel 93, that is, the energy accumulator 2 can serve as a supplement to the EPB caliper brake, and together with the EPB caliper brake, provide braking force to the vehicle, so as to effectively increase the braking force and improve the vehicle's hill parking ability, thereby enabling the vehicle to park on a slope for a long time when the slope is large.

[0048] According to the braking control system 100 of the embodiment of the present invention, by setting the first braking module 1, the energy accumulator 2 can be pressurized and charged. When the pressure of the energy accumulator 2 reaches the set value, the energy accumulator 2 can pressurize the wheel cylinder 9 so that the wheel cylinder 9 can brake the wheel 93 to realize the braking function of the vehicle and improve the safety of the vehicle. In addition, by adding the energy accumulator 2 on the basis of setting the EPB caliper brake, the slope parking ability of the vehicle can be improved, so that the vehicle can be parked on a slope for a long time when the slope is large.

[0049] In some embodiments, the brake control system 100 includes a third normally open valve 21 , which is disposed between the accumulator 2 and the first brake module 1 and / or between the accumulator 2 and the wheel cylinder 9 .

[0050] That is to say, a third normally open valve 21 may be provided between the first brake module 1 or the wheel cylinder 9 and the accumulator 2, or a third normally open valve 21 may be provided between the first brake module 1, the wheel cylinder 9 and the accumulator 2 at the same time. The third normally open valve 21 may be opened or closed, so that the third normally open valve 21 may be used to control the on / off connection between the first brake module 1 and / or the wheel cylinder 9 and the accumulator 2. When the third normally open valve 21 is opened, the first brake module 1 may pressurize and charge the accumulator 2, and / or the accumulator 2 may pressurize the wheel cylinder 9. When the third normally closed valve 21 is closed, the first brake module 1 may not pressurize and charge the accumulator 2, and / or the accumulator 2 may not pressurize the wheel cylinder 9.

[0051] For example, Figure 3 As shown, a third normally open valve 21 is provided between the first brake module 1 and the wheel cylinder 9 and the accumulator 2, that is, the third normally open valve 21 can be used to control the on-off between the first brake module 1 and the wheel cylinder 9 and the accumulator 2. When the third normally open valve 21 is opened, the first brake module 1 can pressurize the accumulator 2, and the accumulator 2 can pressurize the wheel cylinder 9. When the third normally closed valve 21 is closed, the first brake module 1 cannot pressurize the accumulator 2, and the accumulator 2 cannot pressurize the wheel cylinder 9.

[0052] In some embodiments, the brake control system 100 includes a second brake module 6 , which is in communication with the wheel cylinder 9 , and is configured to apply brake pressure to the wheel cylinder 9 when the first brake module 1 fails.

[0053] Specifically, the second brake module 6 can realize the braking function of the vehicle. The second brake module 6 is connected to the wheel cylinder 9 so that the second brake module 6 can pressurize the wheel cylinder 9 to realize the braking function of the vehicle. The second brake module is used to pressurize the wheel cylinder 9 when the first brake module 1 fails. That is, when the first brake module 1 fails due to power outage or malfunction, the second brake module 6 can pressurize the wheel cylinder 9 to ensure the reliability of the vehicle's braking function and improve the safety of vehicle use.

[0054] In some embodiments, the brake control system 100 includes a fourth normally closed valve 611 , which is disposed between the second brake module 6 and the wheel cylinder 9 .

[0055] Specifically, the fourth normally closed valve 611 can be opened or closed. The fourth normally closed valve 611 is set between the second brake module 6 and the wheel cylinder 9, so that the fourth normally closed valve 611 can be used to control the connection and disconnection between the second brake module 6 and the wheel cylinder 9. When the fourth normally closed valve 611 is opened, the second brake module 6 can pressurize the wheel cylinder 9. When the fourth normally closed valve 611 is closed, the second brake module 6 cannot pressurize the wheel cylinder 9.

[0056] It should be noted that the second brake module 6 is used to pressurize the wheel cylinder 9 when the first brake module 1 fails, that is, when the first brake module 1 is in a normal state, the fourth normally closed valve 611 is closed, and when the first brake module 1 is in a failed state, the fourth normally closed valve 611 can be opened, so that the second brake module 6 can pressurize the wheel cylinder to ensure the reliability of the vehicle's braking function.

[0057] In some embodiments, the second brake module 6 is in communication with the energy accumulator 2 , and a fifth normally closed valve 612 is further provided between the second brake module 6 and the energy accumulator 2 .

[0058] Specifically, the fifth normally closed valve 612 can be opened or closed. The fifth normally closed valve 612 is set between the second brake module 6 and the accumulator 2, so that the fifth normally closed valve 612 can be used to control the connection and disconnection between the second brake module 6 and the accumulator 2. When the fifth normally closed valve 612 is opened, the second brake module 6 is connected to the accumulator 2, and the second brake module 6 can pressurize and charge the accumulator 2. When the fifth normally closed valve 612 is closed, the second brake module 6 is disconnected from the accumulator 2, and the second brake module 6 cannot pressurize and charge the accumulator 2. The fifth normally closed valve 612 is used to open when the second brake module 6 pressurizes the wheel cylinder 9, that is, the second brake module 6 can pressurize the wheel cylinder 9 and the accumulator 2 at the same time, so as to reduce additional operating steps and improve the convenience of operation.

[0059] In some embodiments, the brake control system 100 includes a cylinder simulation module 4 , which is in communication with the second brake module 6 and the wheel cylinder 9 , respectively.

[0060] Specifically, the cylinder simulation module 4 can be used to realize the braking function of the vehicle. The cylinder simulation module 4 includes a simulation cylinder 44. The cylinder simulation module 4 is connected to the wheel cylinder 9, that is, the simulation cylinder 44 is connected to the wheel cylinder 9, so that the cylinder simulation module 4 can directly pressurize the wheel cylinder 9 through the simulation cylinder 44, and the cylinder simulation module 4 is connected to the second brake module 6, so that the braking pressure of the cylinder simulation module 6 can also be transmitted to the second brake module 6, and then the second brake module 6 can pressurize the wheel cylinder 9, that is, the braking pressure of the cylinder simulation module 4 can be transmitted to the wheel cylinder 9 through the second brake module 6, so that the cylinder simulation module 4 can directly pressurize the wheel cylinder 9, or pressurize the wheel cylinder 9 through the second brake module 6, so as to realize the braking function of the vehicle.

[0061] In some embodiments, the braking control system 100 includes a first normally closed valve 41, a seventh normally closed valve 13 is provided between the first braking module 1 and the wheel cylinder 9, and the first normally closed valve 41 is arranged between the cylinder simulation module 4 and the wheel cylinder 9 and / or between the cylinder simulation module 4 and the seventh normally closed valve 13.

[0062] Specifically, the first normally closed valve 41 can be opened or closed. The first normally closed valve 41 is set between the cylinder simulation module 4 and the wheel cylinder 9, so that the first normally closed valve 41 can be used to control the connection and disconnection between the cylinder simulation module 4 and the wheel cylinder 9. When the first normally closed valve 41 is opened, the cylinder simulation module 4 is connected to the wheel cylinder 9, and the cylinder simulation module 4 can directly pressurize the wheel cylinder 9. When the first normally closed valve 41 is closed, the cylinder simulation module 4 is disconnected from the wheel cylinder 9, and the cylinder simulation module 4 cannot directly pressurize the wheel cylinder 9.

[0063] At the same time, a seventh normally closed valve 13 is provided between the first brake module 1 and the wheel cylinder 9, and the seventh normally closed valve 13 can be opened or closed. When the seventh normally closed valve 13 is opened, the first brake module 1 is connected to the wheel cylinder 9, and when the seventh normally closed valve 13 is closed, the first brake module 1 is disconnected from the wheel cylinder 9, and the first normally closed valve 41 is set between the oil cylinder simulation module 4 and the seventh normally closed valve 13, that is, the first normally closed valve 41 is set between the simulation cylinder 44 and the seventh normally closed valve 13, that is, the simulation cylinder 44 is connected to the first brake module 1, so that the simulation cylinder 44 can transmit the braking pressure to the first brake module 1, or when the first brake module 1 fails, the seventh normally closed valve 13 can be closed, so that the oil cylinder simulation module 4 can directly pressurize the wheel cylinder 9 through the simulation cylinder 44, or pressurize the wheel cylinder 9 through the second brake module 6, so as to ensure the reliability of the vehicle's braking function.

[0064] In some embodiments, the brake control system 100 includes a third normally closed valve 43 , which is disposed between the cylinder simulation module 4 and the second brake module 6 .

[0065] Specifically, the third normally closed valve 43 can be opened or closed. The third normally closed valve 43 is set between the second brake module 6 and the cylinder simulation module 4, so that the third normally closed valve 43 can be used to control the connection and disconnection between the second brake module 6 and the cylinder simulation module 4. When the third normally closed valve 43 is opened, the braking pressure of the cylinder simulation module 4 can be transmitted to the second brake module 6. When the third normally closed valve 43 is closed, the braking pressure of the cylinder simulation module 4 cannot be transmitted to the second brake module 6, and the third normally closed valve 43 is used to open when the second brake module 6 pressurizes the wheel cylinder 9, that is, when the second brake module 6 pressurizes the wheel cylinder, the cylinder simulation module 4 is connected with the second brake module 6, so that the second brake module 6 can transmit the braking pressure of the cylinder simulation module 4 to the wheel cylinder 9 to pressurize the wheel cylinder 9.

[0066] In some embodiments, the first brake module 1 is also in communication with the wheel cylinder 9 for applying pressure to the wheel cylinder 9 .

[0067] Specifically, the first brake module 1 is connected to the wheel cylinder 9 so that the first brake module 1 can also pressurize the wheel cylinder 9 to realize the braking function of the vehicle, and the first brake module 1 can be connected to the wheel cylinder 9 and the accumulator 2 at the same time so that the first brake module 1 can pressurize the wheel cylinder 9 and the accumulator 2 at the same time, which can reduce additional operations and improve the convenience of operation.

[0068] At the same time, a seventh normally closed valve 13 is provided between the first brake module 1 and the wheel cylinder 9. When the seventh normally closed valve 13 is closed, the first brake module 1 cannot pressurize the wheel cylinder 9. When the seventh normally closed valve 13 is opened, the first brake module 1 can pressurize the wheel cylinder.

[0069] In some embodiments, the brake control system 100 has at least one of a normal service braking mode, a hill-charging parking mode, and a service braking mode when the first brake module fails.

[0070] Specifically, normal driving braking mode: the first brake module 1 can pressurize the wheel cylinder 9 so that the wheel cylinder 9 can brake the wheel 93 to achieve driving braking of the vehicle; slope charging parking mode: when it is detected that the vehicle is on a slope, the first brake module 1 can pressurize the wheel cylinder 9 and the accumulator 2 at the same time, so as to pressurize and charge the accumulator 2 while performing driving braking, which can reduce additional operating steps and improve the convenience of operation, and when the pressure of the accumulator 2 reaches the set value, the accumulator 2 can pressurize the wheel cylinder 9 to achieve parking braking; driving braking mode when the first brake module fails: when the first brake module fails, the cylinder simulation module 4 can directly pressurize the wheel cylinder 9, or pressurize the wheel cylinder 9 through the second brake module 6 to brake the wheel 93, so as to ensure the reliability of the vehicle's braking function.

[0071] It should be noted that the braking control system 100 includes at least one of the normal driving braking mode, the slope charging parking mode, and the driving braking mode when the first braking module fails. These three modes can be selectively set to adapt to different vehicle models and increase the scope of application of the braking control system 100.

[0072] In some embodiments, in normal driving braking mode, the driver presses the brake pedal 8, and the seventh normally closed valve 13 opens after the vehicle is powered on. The cylinder simulation module 4 simulates the brake pedal force and transmits it to the first brake module 1. The first brake module 1 pressurizes the wheel cylinder 9, and the wheel cylinder 9 brakes the wheel 93.

[0073] Specifically, in the normal driving braking mode, the first brake module 1 can pressurize the wheel cylinder 9, such as Figure 2As shown, when the driver steps on the brake pedal 8 and the vehicle is powered on, the seventh normally closed valve 13 opens, and the cylinder simulation module 4 can simulate the brake pedal force and transmit the brake pressure to the first brake module 1, so that the first brake module 1 can pressurize the wheel cylinder 9, and then the wheel cylinder 9 can brake the wheel 93, thereby realizing normal driving braking of the vehicle. When braking is completed and the brake pedal 8 is released, the hydraulic oil can return along the original path.

[0074] In some embodiments, in the hill charging parking mode, the seventh normally closed valve 13 opens after the vehicle is powered on, the driver steps on the brake pedal 8, the first brake module 1 charges and pressurizes the wheel cylinder 9 and the accumulator 2, and the wheel cylinder 9 brakes the wheel.

[0075] Specifically, in the ramp charging parking mode, the first brake module 1 can pressurize the wheel cylinder 9 and the energy accumulator 2 at the same time. Figure 3 As shown, when it is detected that the vehicle is on a slope, when the driver steps on the brake pedal 8, the vehicle is powered on, the seventh normally closed valve 13 opens, and the first brake module 1 can pressurize the wheel cylinder 9 and the energy accumulator 2 at the same time, that is, the energy accumulator 2 can be pressurized and charged while performing service braking, so that the wheel cylinder 9 can brake the wheel 93, and the user can pressurize and charge the energy accumulator 2 without performing additional operations, which can improve the convenience of operation.

[0076] In some embodiments, after the pressure of the energy accumulator 2 and the wheel cylinder 9 reaches the extreme value, the vehicle completes charging, the first brake module 1 controls the seventh normally closed valve 13 to close, and the wheel cylinder 9 locks the wheel to achieve parking.

[0077] Specifically, in the ramp charging parking mode, the first brake module 1 can pressurize the wheel cylinder 9 and the accumulator 2 at the same time. When the pressure of the accumulator 2 and the wheel cylinder 9 reach the extreme value, the vehicle is charged. At this time, the wheel cylinder 9 can lock the wheel 93 to stop the vehicle on the ramp, and the first brake module 1 can control the seventh normally closed valve 13 to close, so that the first brake module 1 will not continue to pressurize the wheel cylinder 9 and the accumulator 2, thereby improving the safety of vehicle use.

[0078] Also, after completing the pressurization and charging of the energy accumulator 2, the user pre-parks the vehicle and leaves the vehicle, presses the P gear switch, the EPB caliper brake performs the clamping action, and the seventh normally closed valve 13 is closed. At this time, the pressure stored in the energy accumulator 2 can perform parking brake on the wheel cylinder 9, and after the vehicle is powered off, the first normally closed valve 41, the fourth normally closed valve 611, the fifth normally closed valve 612 and the seventh normally closed valve 13 are all in a closed state. At this time, the pressure of the energy accumulator 2 is sufficient, and the pressure of the energy accumulator 2 can fully realize the parking brake of the vehicle, so that the vehicle can be parked on the slope for a long time.

[0079] Among them, it should be noted that no matter the vehicle is in P gear without power being disengaged or in power-off state on a steep slope, the vehicle's hill-holding force includes two parts, one part is the hydraulic pressure provided by the energy accumulator 2, and the other part is the clamping force of the EPB caliper brake, which can effectively improve the vehicle's hill parking ability.

[0080] In some embodiments, the first brake module 1 includes a main motor 11. When the first brake module fails in the service braking mode, the main motor 11 fails, the seventh normally closed valve 13 and the third normally open valve 21 are closed, the first normally closed valve 41 is opened, the driver steps on the brake pedal 8, the cylinder simulation module 4 pressurizes the wheel cylinder 9, and the wheel cylinder 9 brakes the wheel.

[0081] Specifically, the first brake module 1 includes a main motor 11, and the main motor 11 can drive the first brake module 1 to pressurize the wheel cylinder 9 and the energy accumulator 2, such as Figure 5 As shown, in the service braking mode when the first brake module fails, when the main motor 11 fails, the first brake module 1 cannot pressurize the wheel cylinder 9, and the seventh normally closed valve 13 and the third normally open valve 21 can be closed, and the first normally closed valve 41 can be opened. When the driver steps on the brake pedal 8, the cylinder simulation module 4 can pressurize the wheel cylinder 9 so that the wheel cylinder 9 can brake the wheel 93, so as to realize the service braking of the vehicle when the main motor 11 fails, ensure the reliability of the vehicle's braking function, and improve the safety of vehicle use.

[0082] In some embodiments, the first brake module 1 includes a main controller 12. When the first brake module fails in the driving brake mode, when the main controller 12 fails, the third normally open valve 21 and the seventh normally closed valve 13 are closed, the second brake module 6 controls the third normally closed valve 43 and the fourth normally closed valve 611 to open, the driver steps on the brake pedal, the cylinder simulation module 4 simulates the brake pedal force and transmits it to the second brake module 6, the second brake module 6 pumps out the liquid in the brake fluid pot 10 and pressurizes the wheel cylinder 9, and the wheel cylinder 9 brakes the wheel.

[0083] Specifically, Figure 6As shown, the first brake module 1 also includes a main controller 12, which is used to control the on-off between the first brake module 1 and the simulation cylinder 44 and the wheel cylinder 9. In the driving braking mode when the first brake module fails, when the main controller 12 fails, the first brake module 1 cannot pressurize the wheel cylinder 9 and the accumulator 2, and the cylinder simulation module 4 cannot directly pressurize the wheel cylinder 9, and the third normally open valve 21 and the seventh normally closed valve 13 can be closed, and the third normally closed valve 43 and the fourth normally closed valve 611 can be opened. At this time, the fifth normally closed valve 612 is in a closed state. When the driver steps on the brake pedal 8, the cylinder simulation module 4 simulates the brake pedal force and transmits it to the second brake module 6, so that the second brake module 6 can pump out the hydraulic oil in the brake fluid pot 10, so that the hydraulic oil can flow to the wheel cylinder 9 to pressurize the wheel cylinder 9, and then the wheel cylinder 9 can brake the wheel 93, thereby realizing driving braking when the main controller 12 fails, ensuring the reliability of the vehicle's braking function, and improving the safety of vehicle use.

[0084] In addition, it should be noted that the braking control system 100 also includes a simulated braking oil circuit 5, which is arranged between the cylinder simulation module 4 and the brake fluid pot 10. A second normally closed valve 51 is provided in the simulated braking oil circuit 5. The second normally closed valve 51 is used to open when the first brake module 1 pressurizes the wheel cylinder 9 to release the pressure in the cylinder simulation module 4 when the first brake module 1 pressurizes the wheel cylinder 9. A connecting oil circuit 42 is also provided between the cylinder simulation module 4 and the brake fluid pot 10. A first normally open valve 421 is provided in the connecting oil circuit 42. The first normally open valve 421 is used to close after the brake fluid pot 10 completes the oil supply to the cylinder simulation module 4 to ensure that the pressure in the cylinder simulation module 4 is sufficient, thereby ensuring the reliability of the cylinder simulation module 4 pressurizing the wheel cylinder 9.

[0085] It should be noted that the hydraulic oil can flow from the cylinder simulation module 4 to the brake fluid pot 10 along the simulated brake oil circuit 5, or flow from the brake fluid pot 10 to the cylinder simulation module 4 along the connecting oil circuit 42, thereby realizing the circulation of the hydraulic oil and ensuring the normal operation of the brake control system 100.

[0086] In addition, the second brake module 6 includes an auxiliary motor 61 and an auxiliary oil return circuit 62. The auxiliary motor 61 and the auxiliary oil return circuit 62 are distributed in parallel. The auxiliary motor 61 is used to transmit the braking pressure of the cylinder simulation module 4 to the wheel cylinder 9. The auxiliary oil return circuit 62 is used to return the hydraulic oil of the wheel cylinder 9 to the cylinder simulation module 4. A second normally open valve 621 is provided in the auxiliary oil return circuit 62. The second normally open valve 621 is closed after the oil return of the auxiliary oil return circuit 62 is completed.

[0087] At the same time, the wheel cylinder 9 is provided with a fourth normally open valve 91, which can be used to control the on-off connection between the wheel cylinder 9 and the first brake module 1, the cylinder simulation module 4 and the accumulator 2. When the fourth normally open valve 91 is opened, the hydraulic oil in any one of the first brake module 1, the cylinder simulation module 4 and the accumulator 2 can flow to the wheel cylinder 9 to pressurize the wheel cylinder 9, and the wheel cylinder 9 is also provided with a one-way valve 92 distributed in parallel with the fourth normally open valve 91. The one-way valve 92 is constructed to conduct unidirectionally from the wheel cylinder 9 to the outside to ensure the reliability of the pressure release of the wheel cylinder 9 to facilitate the next pressurization.

[0088] Moreover, the braking control system 100 also includes a main return oil circuit 7, which is arranged between the wheel cylinder 9 and the brake fluid pot 10. The main return oil circuit 7 is used to return the oil in the wheel cylinder 9 to the brake fluid pot 10. A sixth normally closed valve 71 is provided in the main return oil circuit 7. The sixth normally closed valve 71 can control the on-off of the main return oil circuit 7, so that the return path of the hydraulic oil in the wheel cylinder 9 can be controlled by controlling the state of the sixth normally closed valve 71, so that the hydraulic oil in the wheel cylinder 9 can be returned to the brake fluid pot 10 along the main return oil circuit 7, or returned to the cylinder simulation module 4 along the auxiliary return oil circuit 62 to adapt to different braking conditions.

[0089] In such Figure 1-Figure 6 In the illustrated embodiment, the number of wheel cylinders 9 and wheels 93 is four, and the four wheel cylinders 9 correspond one to one to the four wheels 93, that is, the braking control system 100 can brake the four wheels 93 by braking the four wheel cylinders 9, thereby improving the reliability of braking the four wheels 93, and further improving the reliability of the vehicle's braking function and the hill parking capability.

[0090] The present invention also provides a vehicle.

[0091] The vehicle according to the embodiment of the present invention includes the brake control system 100 of any one of the above embodiments. By providing the first brake module 1 and the energy accumulator 2, the wheel cylinder 9 can be pressurized and braked to realize the braking function of the vehicle and improve the safety of the vehicle. In addition, the first brake module 1 and the energy accumulator 2 can respectively pressurize and brake the wheel cylinder 9 to ensure the reliability of the vehicle's braking function. In addition, by adding the energy accumulator 2, the slope parking capability of the vehicle can be improved to realize long-term slope parking of the vehicle.

[0092] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0093] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A braking control system, characterized in that: include: A wheel cylinder (9) for braking a wheel (93); An energy accumulator (2), the energy accumulator (2) being in communication with the wheel cylinder (9) and being used for pressurizing the wheel cylinder (9); A first braking module (1), the first braking module (1) being in communication with the energy accumulator (2) and being used for pressurizing the energy accumulator (2).

2. The brake control system according to claim 1, characterized in that: It comprises a third normally open valve (21), wherein the third normally open valve (21) is arranged between the energy accumulator (2) and the first brake module (1) and / or between the energy accumulator (2) and the wheel cylinder (9).

3. The brake control system according to claim 2, characterized in that: It comprises a second brake module (6), the second brake module (6) being in communication with the wheel cylinder (9) and being used for applying pressure to the wheel cylinder (9) for braking when the first brake module (1) fails.

4. The brake control system according to claim 3, characterized in that: It comprises a fourth normally closed valve (611), wherein the fourth normally closed valve (611) is arranged between the second brake module (6) and the wheel cylinder (9).

5. The brake control system according to claim 3, characterized in that: The second braking module (6) is in communication with the energy accumulator (2), and a fifth normally closed valve (612) is provided between the second braking module (6) and the energy accumulator (2).

6. The brake control system according to claim 3, characterized in that: It comprises an oil cylinder simulation module (4), wherein the oil cylinder simulation module (4) is respectively connected to the second brake module (6) and the wheel cylinder (9).

7. The brake control system according to claim 6, characterized in that: The invention comprises a first normally closed valve (41), a seventh normally closed valve (13) is arranged between the first brake module (1) and the wheel cylinder (9), and the first normally closed valve (41) is arranged between the oil cylinder simulation module (4) and the wheel cylinder (9) and / or between the oil cylinder simulation module (4) and the seventh normally closed valve (13).

8. The brake control system according to claim 6, characterized in that: It comprises a third normally closed valve (43), wherein the third normally closed valve (43) is arranged between the oil cylinder simulation module (4) and the second brake module (6).

9. The brake control system according to claim 1, characterized in that: The first brake module (1) is also in communication with the wheel cylinder (9) for applying pressure to the wheel cylinder (9).

10. The brake control system according to any one of claims 1 to 9, characterized in that: The vehicle has at least one of a normal driving braking mode, a hill-charging parking mode, and a driving braking mode when the first braking module fails.

11. The brake control system according to claim 10, characterized in that: In the normal driving braking mode, the driver presses the brake pedal (8), the seventh normally closed valve (13) opens after the vehicle is powered on, the oil cylinder simulation module (4) simulates the brake pedal force and transmits it to the first brake module (1), the first brake module (1) pressurizes the wheel cylinder (9), and the wheel cylinder (9) brakes the wheel (93).

12. The brake control system according to claim 10, characterized in that: In the ramp charging parking mode, the seventh normally closed valve (13) opens after the vehicle is powered on, the driver steps on the brake pedal (8), the first brake module (1) charges and pressurizes the wheel cylinder (9) and the energy accumulator (2), and the wheel cylinder (9) brakes the wheel (93).

13. The brake control system according to claim 12, characterized in that: After the pressures of the energy storage device (2) and the wheel cylinder (9) reach extreme values, the vehicle completes energy charging, the first brake module (1) controls the seventh normally closed valve (13) to close, and the wheel cylinder (9) locks and brakes the wheel (93) to achieve parking.

14. The brake control system according to claim 10, characterized in that: The first brake module (1) comprises a main motor (11). In a driving brake mode when the first brake module fails, when the main motor (11) fails, the seventh normally closed valve (13) and the third normally open valve (21) are closed, the first normally closed valve (41) is opened, the driver steps on the brake pedal (8), the cylinder simulation module (4) pressurizes the wheel cylinder (9), and the wheel cylinder (9) brakes the wheel (93).

15. The brake control system according to claim 10, characterized in that: The first brake module (1) includes a main controller (12). In the driving brake mode when the first brake module fails, when the main controller (12) fails, the third normally open valve (21) and the seventh normally closed valve (13) are closed, the second brake module (6) controls the third normally closed valve (43) and the fourth normally closed valve (611) to open, the driver steps on the brake pedal (8), the cylinder simulation module (4) simulates the brake pedal force and transmits it to the second brake module (6), the second brake module (6) pumps out the liquid in the brake fluid pot (10) and pressurizes the wheel cylinder (9), and the wheel cylinder (9) brakes the wheel (93).

16. A vehicle, characterized in that: A brake control system comprising the brake control system according to any one of claims 1 to 15.

Images