Hydraulic stabilizer bar system, control method of hydraulic stabilizer bar system and vehicle

Abstract

The present invention discloses a hydraulic stabilizer bar system, a control method for the hydraulic stabilizer bar system, and a vehicle. The hydraulic stabilizer bar system includes: a stabilizer bar assembly; an actuator; a hydraulic oil circuit, the hydraulic oil circuit being disposed outside the actuator and having an open state and a closed state; a one-way valve assembly; and a bidirectional electronic oil pump. Thus, by connecting one end of the hydraulic oil circuit to a first oil chamber and the other end to a second oil chamber, and disposing the one-way valve assembly and the bidirectional electronic oil pump in the hydraulic oil circuit so that the hydraulic oil circuit has an open state and a closed state, the hydraulic stabilizer bar system can not only disconnect the stabilizer bar assembly in off-road conditions, thereby improving the vehicle's wheel contact and off-road performance, but also enable the bidirectional electronic oil pump to provide active force when the vehicle turns, counteracting roll and achieving active anti-rolling of the vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a hydraulic stabilizer bar system, a control method for the hydraulic stabilizer bar system, and a vehicle. Background Art

[0002] A vehicle's anti-roll bar connects both sides of the wheel suspension system, making it more rigid and stable. This effectively reduces vehicle shake and pitch during driving, improving driving stability and safety. The anti-roll bar also helps the vehicle better cope with varying road conditions and speeds, maintaining stability and enhancing vehicle handling responsiveness and agility.

[0003] In the prior art, a stabilizer bar is a relatively thick metal rod, secured to the vehicle body or subframe via bushings or bearings. When the vehicle turns, suspension bounce causes the stabilizer bar to twist, generating a torque to counteract roll and suspension bounce, thereby reducing roll. However, while the stabilizer bar reduces roll, it also inhibits the rebound travel of the left and right suspensions. This inhibitory effect can adversely affect off-road performance, particularly for off-road vehicles. This reduces wheel contact and vehicle support in rough off-road conditions, resulting in reduced off-road performance. In other words, conventional stabilizer bars struggle to resolve the conflict between suppressing vehicle roll and relieving rebound travel. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a hydraulic stabilizer bar system that can simultaneously take into account off-road disconnection and active anti-roll in cornering.

[0005] The present invention further provides a vehicle.

[0006] The present invention further proposes a control method for a hydraulic stabilizer bar system.

[0007] According to an embodiment of the present invention, a hydraulic stabilizer bar system includes: a stabilizer bar group, the stabilizer bar group including a first stabilizer bar and a second stabilizer bar, one end of the first stabilizer bar is used to be connected to one of the left suspension and the right suspension of the vehicle, and one end of the second stabilizer bar is used to be connected to the other of the left suspension and the right suspension of the vehicle; an actuator, the actuator including a housing and a blade, the blade being rotatably arranged inside the housing and separating the interior of the housing into a first oil chamber and a second oil chamber, the other end of the first stabilizer bar is connected to the housing, and the other end of the second stabilizer bar is connected to the blade; a hydraulic oil circuit, the hydraulic oil circuit is arranged on the outside of the actuator, one end of the hydraulic oil circuit is connected to the first oil chamber, and the other end is connected to the second oil chamber, the hydraulic oil circuit has an open state and a closed state, and when the hydraulic oil circuit is in the open state, the first oil chamber and the second oil chamber The oil chambers are connected, and the blades are rotatable relative to the outer shell so that the first stabilizer bar and the second stabilizer bar can rotate relative to each other; when the hydraulic oil circuit is in a closed state, the first oil chamber and the second oil chamber are disconnected, and the blades are locked and cannot rotate relative to the outer shell, so that the first stabilizer bar and the second stabilizer bar are locked and cannot rotate relative to each other; a one-way valve group, the one-way valve group is arranged in the hydraulic oil circuit and includes a first one-way valve and a second one-way valve, the first one-way valve and the second one-way valve are arranged at intervals, the first one-way valve is connected to the first oil chamber, and the second one-way valve is connected to the second oil chamber, the first one-way valve and the second one-way valve are selectively opened and closed at the same time to switch the hydraulic oil circuit between an open state and a closed state; a two-way electronic oil pump, the two-way electronic oil pump is arranged in the hydraulic oil circuit and connected between the first one-way valve and the second one-way valve.

[0008] Therefore, by connecting one end of the hydraulic oil circuit with the first oil chamber and the other end of the hydraulic oil circuit with the second oil chamber, and arranging a one-way valve group and a two-way electronic oil pump in the hydraulic oil circuit, so that the hydraulic oil circuit has an open state and a closed state, the hydraulic stabilizer bar system can not only disconnect the stabilizer bar group under off-road conditions, improve the vehicle's wheel ground contact, and improve the vehicle's off-road performance, but also the two-way electronic oil pump can provide active power when the vehicle turns to resist roll and realize active anti-roll of the vehicle.

[0009] In some examples of the present invention, the bidirectional electronic oil pump includes an oil pump body and a drive motor. The oil pump body is connected between the first one-way valve and the second one-way valve. The drive motor is selectively connected to the oil pump body in a transmission manner.

[0010] In some examples of the present invention, the hydraulic stabilizer bar system also includes a first anti-roll oil circuit, one end of which is selectively connected to a portion of the hydraulic oil circuit corresponding to the first one-way valve and the bidirectional electronic oil pump, and the other end of the first anti-roll oil circuit is connected to the second one-way valve to selectively open the second one-way valve.

[0011] In some examples of the present invention, the hydraulic stabilizer bar system also includes a second anti-roll oil circuit, one end of which is selectively connected to a portion of the hydraulic oil circuit corresponding to the second one-way valve and the bidirectional electronic oil pump, and the other end of the second anti-roll oil circuit is connected to the first one-way valve to selectively open the first one-way valve.

[0012] In some examples of the present invention, the hydraulic stabilizer bar system also includes a pressure sensor and a controller, and there are two pressure sensors, one of the two pressure sensors is arranged at a position near one end of the hydraulic oil circuit, and the other is arranged at a position near the other end of the hydraulic oil circuit, and both of the pressure sensors are electrically connected to the controller, and the controller is electrically connected to the first one-way valve, the second one-way valve and the bidirectional electronic oil pump.

[0013] According to an embodiment of the present invention, a vehicle includes: a left-side suspension, which is provided with a first angle sensor; a right-side suspension, which is provided with a second angle sensor; and the hydraulic stabilizer bar system described above, wherein the hydraulic stabilizer bar system is arranged between the left-side suspension and the right-side suspension, and the hydraulic stabilizer bar system is provided with a controller, and the controller is electrically connected to both the first angle sensor and the second angle sensor.

[0014] According to an embodiment of the present invention, a control method for a hydraulic stabilizer bar system is applicable to the above-mentioned vehicle, and includes: obtaining pressure signals from two pressure sensors; when the difference between the pressure signals of the two pressure sensors is less than a preset pressure difference value, the first one-way valve and the second one-way valve are closed at the same time, and the hydraulic oil circuit is in a closed state; when the difference between the pressure signals of the two pressure sensors is not less than the preset pressure difference value, the first one-way valve and the second one-way valve are opened at the same time, and the hydraulic oil circuit is in an open state.

[0015] In some examples of the present invention, the control method of the hydraulic stabilizer bar system also includes: obtaining the angle signals of the first angle sensor and the second angle sensor; when the angle signal difference between the first angle sensor and the second angle sensor is greater than the angle difference preset value, controlling the drive motor to drive the oil pump body to drive the oil flow in the hydraulic oil circuit; when the angle signal difference between the first angle sensor and the second angle sensor is not greater than the angle difference preset value, controlling the drive motor and the oil pump body to disconnect transmission.

[0016] In some examples of the present invention, when the angle signal difference between the first angle sensor and the second angle sensor is greater than a preset angle difference value, the step of controlling the drive motor to drive the oil pump body to drive the oil in the hydraulic oil circuit to flow includes: the drive motor drives the oil pump body to drive the oil in the hydraulic oil circuit to flow from the first oil chamber to the second oil chamber, or drives the oil in the hydraulic oil circuit from the second oil chamber to the first oil chamber.

[0017] In some examples of the present invention, the step of the drive motor driving the oil pump body to drive the oil in the hydraulic oil circuit to flow from the first oil chamber to the second oil chamber, or driving the oil in the hydraulic oil circuit to flow from the second oil chamber to the first oil chamber includes: when the bidirectional electronic oil pump drives the oil in the hydraulic oil circuit to flow from the first oil chamber to the second oil chamber, one end of the second anti-roll oil circuit is connected to the part of the hydraulic oil circuit corresponding to the second one-way valve and the two-way electronic oil pump, and the other end is connected to the first one-way valve to selectively open the first one-way valve; when the bidirectional electronic oil pump drives the oil in the hydraulic oil circuit to flow from the second oil chamber to the first oil chamber, one end of the first anti-roll oil circuit is connected to the part of the hydraulic oil circuit corresponding to the first one-way valve and the two-way electronic oil pump, and the other end is connected to the second one-way valve to selectively open the second one-way valve.

[0018] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0020] Figure 1 is a schematic diagram of a vehicle according to an embodiment of the present invention;

[0021] Figure 2 is a control diagram of a vehicle according to an embodiment of the present invention;

[0022] Figure 3is a schematic diagram of the flow of oil in a vehicle in a locking mode according to an embodiment of the present invention;

[0023] Figure 4 is a schematic diagram of the flow of oil in a vehicle in disconnect mode according to an embodiment of the present invention;

[0024] Figure 5 is a schematic diagram of the flow of oil when a vehicle switches from a locking mode to a disconnected mode according to an embodiment of the present invention;

[0025] Figure 6 is a schematic diagram of the flow of oil in an active anti-roll mode of a vehicle according to an embodiment of the present invention;

[0026] Figure 7 is a schematic diagram of the flow of oil in a vehicle in protection mode according to an embodiment of the present invention;

[0027] Figure 8 is a flow chart of a control method of a hydraulic stabilizer bar system according to an embodiment of the present invention;

[0028] Figure 9 is a flow chart of a control method of a hydraulic stabilizer bar system according to an embodiment of the present invention;

[0029] Figure 10 is a flowchart of step S5 according to an embodiment of the present invention.

[0030] Reference numerals:

[0031] 1000. Vehicle;

[0032] 100, hydraulic stabilizer bar system; 200, left suspension; 300, right suspension; 400, first angle sensor; 500, second angle sensor;

[0033] 10. Stabilizer bar assembly; 11. First stabilizer bar; 12. Second stabilizer bar;

[0034] 20. Actuator; 21. First oil chamber; 22. Second oil chamber;

[0035] 30. Hydraulic oil circuit; 31. One-way valve group; 311. First one-way valve; 312. Second one-way valve; 32. Bidirectional electronic oil pump; 321. Oil pump body; 322. Drive motor; 33. Second switch solenoid valve;

[0036] 40. Accumulator; 41. First switch solenoid valve; 42. Third one-way valve;

[0037] 50. First anti-roll oil circuit; 60. Second anti-roll oil circuit; 70. Pressure sensor. DETAILED DESCRIPTION

[0038] The embodiments of the present invention will be described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention will be described in detail below.

[0039] Reference below Figures 1-10 A hydraulic stabilizer bar system 100 according to an embodiment of the present invention is described. The hydraulic stabilizer bar system 100 may be applied to a vehicle 1000 , and the vehicle 1000 may adopt a control method of the hydraulic stabilizer bar system 100 .

[0040] Combine Figure 1 As shown, the hydraulic stabilizer bar system 100 according to the present invention can mainly include: a stabilizer bar group 10, an actuator 20 and a hydraulic oil circuit 30, wherein the stabilizer bar group 10 can mainly include a first stabilizer bar 11 and a second stabilizer bar 12, one end of the first stabilizer bar 11 is used to be connected to one of the left suspension 200 and the right suspension 300 of the vehicle 1000, and one end of the second stabilizer bar 12 is used to be connected to the other of the left suspension 200 and the right suspension 300 of the vehicle 1000, the actuator 20 can mainly include a shell and a blade, the blade is rotatably arranged inside the shell and separates the inside of the shell into a first oil chamber 21 and a second oil chamber 22, the other end of the first stabilizer bar 11 is connected to the shell, and the other end of the second stabilizer bar 12 is connected to the blade, and the hydraulic oil circuit 30 is arranged on the outside of the actuator 20, one end of the hydraulic oil circuit 30 is connected to the first oil chamber 21, and the other end is connected to the second oil chamber 22.

[0041] Specifically, one end of the first stabilizer bar 11 is used to be connected to one of the left side suspension 200 and the right side suspension 300 of the vehicle 1000, and one end of the second stabilizer bar 12 is used to be connected to the other of the left side suspension 200 and the right side suspension 300 of the vehicle 1000. By rigidly connecting the other end of the first stabilizer bar 11 to the housing of the actuator 20 and rigidly connecting the other end of the second stabilizer bar 12 to the blade of the actuator 20, the selective rotation of the blade relative to the housing can correspondingly achieve the relative rotation or locking of the first stabilizer bar 11 and the second stabilizer bar 12.

[0042] Furthermore, the blades divide the interior of the housing into a first oil chamber 21 and a second oil chamber 22. The first oil chamber 21 and the second oil chamber 22 are not connected to each other inside the actuator 20. By arranging the hydraulic oil circuit 30 on the outside of the actuator 20, one end of the hydraulic oil circuit 30 is connected to the first oil chamber 21, and the other end of the hydraulic oil circuit 30 is connected to the second oil chamber 22, and the hydraulic oil circuit 30 has an open state and a closed state. In this way, the oil in the first oil chamber 21 and the second oil chamber 22 can be selectively connected through the hydraulic oil circuit 30, and the oil can selectively push the blades to rotate relative to the housing, thereby correspondingly realizing the relative rotation or locking of the first stabilizer bar 11 and the second stabilizer bar 12.

[0043] When the hydraulic oil circuit 30 is in the open state, the first oil chamber 21 and the second oil chamber 22 are connected, and the oil in the first oil chamber 21 and the second oil chamber 22 can be connected through the hydraulic oil circuit 30. The blade can rotate relative to the housing, so that the first stabilizer bar 11 and the second stabilizer bar 12 can be disconnected, so that one end of the first stabilizer bar 11 is connected to one of the left suspension 200 and the right suspension 300 of the vehicle 1000, and one end of the second stabilizer bar 12 is connected to the other of the left suspension 200 and the right suspension 300 of the vehicle 1000. After being connected, the first stabilizer bar 11 and the second stabilizer bar 12 can respectively rotate relative to each other in accordance with the rebound stroke of the left suspension 200 and the right suspension 300, and the force cannot be transmitted between the first stabilizer bar 11 and the second stabilizer bar 12, thereby releasing the suppression of the rebound stroke of the left suspension 200 and the right suspension 300 by the stabilizer bar group 10, and releasing the rebound stroke of the left suspension 200 and the right suspension 300, thereby improving the ground contact of the wheels under large undulating off-road conditions and enhancing the off-road performance of the vehicle 1000.

[0044] When the hydraulic oil circuit 30 is in a closed state, the oil in the first oil chamber 21 and the oil in the second oil chamber 22 cannot circulate, the blades are locked and cannot rotate relative to the outer casing, so that the first stabilizer bar 11 and the second stabilizer bar 12 are locked and cannot rotate. Therefore, after connecting one end of the first stabilizer bar 11 to one of the left suspension 200 and the right suspension 300 of the vehicle 1000, and connecting one end of the second stabilizer bar 12 to the other of the left suspension 200 and the right suspension 300 of the vehicle 1000, the stabilizer bar group 10 can be connected as a whole between the left suspension 200 and the right suspension 300. The stabilizer bar group 10 can adapt to the driving of the vehicle 1000 on a flat road, improve the suspension stiffness of the vehicle 1000, reduce the shaking and tilting of the vehicle 1000 during driving, improve driving stability and safety, and enhance the control responsiveness and sensitivity of the vehicle 1000.

[0045] Combine Figure 1 As shown, the hydraulic stabilizer bar system 100 according to the present invention may further include: a one-way valve group 31 and a two-way electronic oil pump 32. The one-way valve group 31 and the two-way electronic oil pump 32 are both arranged in the hydraulic oil circuit 30. The one-way valve group 31 may mainly include a first one-way valve 311 and a second one-way valve 312. The first one-way valve 311 and the second one-way valve 312 are arranged at intervals. The first one-way valve 311 is connected to the first oil chamber 21, and the second one-way valve 312 is connected to the second oil chamber 22. The first one-way valve 311 and the second one-way valve 312 are selectively opened and closed at the same time to switch the hydraulic oil circuit 30 between an open state and a closed state. The two-way electronic oil pump 32 is connected between the first one-way valve 311 and the second one-way valve 312.

[0046] Specifically, by spacing the first one-way valve 311 and the second one-way valve 312, and connecting the first one-way valve 311 to the first oil chamber 21, and connecting the second one-way valve 312 to the second oil chamber 22, when the first one-way valve 311 and the second one-way valve 312 are both in the closed state, the oil in the first oil chamber 21 cannot flow through the first one-way valve 311, and the oil in the second oil chamber 22 cannot flow through the second one-way valve 312, thereby achieving the closed state of the hydraulic oil circuit 30, and ... When both the first and second one-way valves 311 and 312 are in the open state, the oil in the first oil chamber 21 can flow through the first one-way valve 311, and the oil in the second oil chamber 22 can also flow through the second one-way valve 312, thereby realizing the open state of the hydraulic oil circuit 30. In this way, by controlling the selective opening and closing of the first and second one-way valves 311 and 312 at the same time, the hydraulic oil circuit 30 can be switched between the open state and the closed state, which can make the hydraulic stabilizer bar system 100 simpler and more reliable.

[0047] Furthermore, the two-way electronic oil pump 32 is connected between the first one-way valve 311 and the second one-way valve 312. On the one hand, the two-way electronic oil pump 32 can be used as a hydraulic motor driven by oil. After the first one-way valve 311 and the second one-way valve 312 are opened at the same time, the oil can flow to the two-way electronic oil pump 32 and push the two-way electronic oil pump 32 to open, thereby ensuring the normal opening state of the hydraulic oil circuit 30 and the normal operation of the hydraulic stabilizer bar system 100. On the other hand, the two-way electronic oil pump 32 can also be used as a pressure pump to the hydraulic oil circuit 30 output power. When the vehicle 1000 turns and the stabilizer bar group 10 is subjected to torque, the oil in the first oil chamber 21 or the second oil chamber 22 will be compressed, controlling the steering of the two-way electronic oil pump 32, and simultaneously opening the first one-way valve 311 and the second one-way valve 312. The two-way electronic oil pump 32 can pump oil into the compressed one of the first oil chamber 21 or the second oil chamber 22 to increase the pressure of the cavity, thereby resisting the torque applied to the stabilizer bar group 10 when turning, providing additional torque support, reducing roll, and realizing the active anti-roll function of the hydraulic stabilizer bar system 100.

[0048] Combine Figure 1As shown, the bidirectional electronic oil pump 32 may mainly include an oil pump body 321 and a drive motor 322. The oil pump body 321 is connected between the first one-way valve 311 and the second one-way valve 312, and the drive motor 322 is selectively connected to the oil pump body 321. Specifically, by connecting the oil pump body 321 between the first one-way valve 311 and the second one-way valve 312, and selectively connecting the drive motor 322 to the oil pump body 321, oil can selectively drive the gears in the oil pump body 321, and the oil can flow through the oil pump body 321 in the hydraulic oil circuit 30. Alternatively, the drive motor 322 can drive the gears in the oil pump body 321 to rotate, outputting active power to the hydraulic oil circuit 30. Therefore, the bidirectional electronic oil pump 32 can be selected to operate in different operating states according to different driving conditions of the vehicle 1000, thereby ensuring the reliability of the hydraulic stabilizer bar system 100.

[0049] Combine Figure 1 As shown, the hydraulic stabilizer bar system 100 can also include a first anti-roll oil circuit 50, one end of the first anti-roll oil circuit 50 is selectively connected to the part of the hydraulic oil circuit 30 corresponding to the first one-way valve 311 and the two-way electronic oil pump 32, and the other end of the first anti-roll oil circuit 50 is connected to the second one-way valve 312 to selectively open the second one-way valve 312.

[0050] Specifically, by selectively connecting one end of the first anti-roll oil circuit 50 to the part between the first one-way valve 311 and the two-way electronic oil pump 32 corresponding to the hydraulic oil circuit 30, the other end of the first anti-roll oil circuit 50 is connected to the second one-way valve 312. In this way, when the vehicle 1000 turns, the stabilizer bar group 10 is subjected to torque, and the oil in the first oil chamber 21 is compressed, the drive motor 322 is connected to the oil pump body 321 in a transmission manner, and the steering direction of the drive motor 322 in the two-way electronic oil pump 32 is controlled, so that the oil can not only open the first one-way valve 311 through the hydraulic oil circuit 30, but also open the second one-way valve 312 through the first anti-roll oil circuit 50. The two-way electronic oil pump 32 can pump oil into the first oil chamber 21 to increase the pressure in the chamber, thereby resisting the torque applied to the stabilizer bar group 10 when turning, providing additional torque support, and reducing roll.

[0051] Combine Figure 1 As shown, the hydraulic stabilizer bar system 100 may further include a second anti-roll oil circuit 60, one end of which is selectively connected to the portion of the hydraulic oil circuit 30 corresponding to the second one-way valve 312 and the two-way electronic oil pump 32, and the other end of the second anti-roll oil circuit 60 is connected to the first one-way valve 311 to selectively open the first one-way valve 311.

[0052] Specifically, by selectively connecting one end of the second anti-roll oil circuit 60 to the part between the second one-way valve 312 and the two-way electronic oil pump 32 corresponding to the hydraulic oil circuit 30, the other end of the second anti-roll oil circuit 60 is connected to the first one-way valve 311. In this way, when the vehicle 1000 turns, the stabilizer bar group 10 is subjected to torque, and the oil in the second oil chamber 22 is compressed, the drive motor 322 is connected to the oil pump body 321 in a transmission manner, and the steering direction of the drive motor 322 in the two-way electronic oil pump 32 is controlled, so that the oil can not only open the second one-way valve 312 through the hydraulic oil circuit 30, but also open the first one-way valve 311 through the second anti-roll oil circuit 60. The two-way electronic oil pump 32 can pump oil into the second oil chamber 22 to increase the pressure in the cavity, thereby resisting the torque applied to the stabilizer bar group 10 when turning, providing additional torque support, and reducing roll.

[0053] In this way, by connecting the drive motor 322 to the oil pump body 321 in a transmission manner, the forward and reverse rotation of the drive motor 322 is controlled, and the oil pump body 321 outputs the main force to the hydraulic oil circuit 30, selectively pumping oil to the first oil chamber 21 or the second oil chamber 22, thereby providing additional torque support for the stabilizer bar group 10, thereby realizing the active anti-roll function of the hydraulic stabilizer bar system 100, resisting the roll of the vehicle 1000 when turning, and further improving the roll stability of the vehicle 1000.

[0054] Furthermore, when the turn is completed, the wheels return to the center position and the vehicle body only moves vertically. Since the two-way electronic oil pump 32 fills oil into the compressed first oil chamber 21 or the second oil chamber 22 during the turn, the first stabilizer bar 11 and the second stabilizer bar 12 have been slightly twisted. At this time, the drive motor 322 can be connected to the oil pump body 321 for transmission, and the drive motor 322 is started to enable the two-way electronic oil pump 32 to transport the excess oil in the compressed one of the first oil chamber 21 and the second oil chamber 22 back to the uncompressed one of the first oil chamber 21 and the second oil chamber 22 until the pressure difference between the first oil chamber 21 and the second oil chamber 22 is small, and the drive motor 322 is controlled to stop, so that the stabilizer bar group 10 can return to the center position in time, complete the return to the center position of the stabilizer bar group 10, and ensure the normal operation of the hydraulic stabilizer bar system 100.

[0055] Combine Figure 1 and Figure 2 As shown, the hydraulic stabilizer bar system 100 may further include a pressure sensor 70 and a controller. There are two pressure sensors 70, one of which is disposed near one end of the hydraulic oil circuit 30, and the other is disposed near the other end of the hydraulic oil circuit 30. Both pressure sensors 70 are electrically connected to the controller, and the controller is electrically connected to the first one-way valve 311, the second one-way valve 312 and the bidirectional electronic oil pump 32.

[0056] Specifically, the pressure difference between the first oil chamber 21 and the second oil chamber 22 can reflect the relative movement state of the first stabilizer bar 11 and the second stabilizer bar 12. When the pressure difference between the first oil chamber 21 and the second oil chamber 22 is small, it means that the relative rotation between the first stabilizer bar 11 and the second stabilizer bar 12 is small, and the stabilizer bar group 10 is in a return-to-normal state. By electrically connecting the two pressure sensors 70 to the controller, one of the two pressure sensors 70 is set at a position near one end of the hydraulic oil circuit 30, and the other is set at a position near the other end of the hydraulic oil circuit 30. Both pressure sensors 70 are electrically connected to the controller. Since the two ends of the hydraulic oil circuit 30 are respectively connected to the first oil chamber 21 and the second oil chamber 22, the two pressure sensors 70 can respectively detect the pressures of the first oil chamber 21 and the second oil chamber 22, and can transmit the detected pressure signals to the controller.

[0057] Furthermore, by electrically connecting the controller to the bidirectional electronic oil pump 32, when the vehicle 1000 turns and returns to the center, the controller can control the bidirectional electronic oil pump 32 to stop when the pressure difference detected by the two pressure sensors 70 is small, thereby ensuring that the stabilizer bar group 10 is in a return-to-center state, thereby making the hydraulic stabilizer bar system 100 more intelligent and controllable.

[0058] Furthermore, by electrically connecting the controller to the first one-way valve 311 and the second one-way valve 312, the opening and closing of the first one-way valve 311 and the second one-way valve 312 can be controlled by the controller, and the circulation of oil can be selectively controlled, thereby making the hydraulic stabilizer bar system 100 more intelligent and controllable.

[0059] Combine Figure 1 As shown, the hydraulic stabilizer bar system 100 may further include an accumulator 40 and a first switching solenoid valve 41. The accumulator 40 is provided with an oil outlet. The first switching solenoid valve 41 is provided at the oil outlet. The oil outlet is connected to both the first one-way valve 311 and the second one-way valve 312. The first switching solenoid valve 41 selectively opens and closes the oil outlet to switch the hydraulic oil circuit 30 between an open state and a closed state.

[0060] Specifically, the first one-way valve 311 and the second one-way valve 312 are pilot-operated hydraulic one-way valves. The outlet of the first one-way valve 311 is connected to the first oil chamber 21, and the inlet of the first one-way valve 311 is connected to an oil port of the two-way electronic oil pump 32. The outlet of the second one-way valve 312 is connected to the second oil chamber 22, and the inlet of the second one-way valve 312 is connected to the other oil port of the two-way electronic oil pump 32. By arranging the first switch solenoid valve 41 at the oil outlet of the accumulator 40, the control chambers of the first one-way valve 311 and the second one-way valve 312 are both connected to the oil outlet, and the accumulator 40 is pre-charged with pressure. In this way, when the first switch solenoid valve 41 is opened, The oil in the accumulator 40 can flow to the first one-way valve 311 and the second one-way valve 312 to open the first one-way valve 311 and the second one-way valve 312, and the hydraulic oil circuit 30 is in an open state. When the first switch solenoid valve 41 is closed, the oil cannot flow through the first one-way valve 311 and the second one-way valve 312, and the hydraulic oil circuit 30 is in a closed state. Therefore, by selectively closing the oil outlet of the first switch solenoid valve 41, the hydraulic oil circuit 30 can be switched between an open state and a closed state, which can make the switching of the hydraulic oil circuit 30 between an open state and a closed state simpler and more reliable, and can make the hydraulic stabilizer bar system 100 simpler and more reliable.

[0061] Combine Figure 1 As shown, the accumulator 40 has an oil storage port, which is connected to the first one-way valve 311 and the second one-way valve 312, and a third one-way valve 42 is provided at the oil storage port. In this way, when the first switch solenoid valve 41 is switched from the open state to the closed state, so that the hydraulic oil circuit 30 is switched from the open state to the closed state, the oil in the first oil chamber 21 and the second oil chamber 22 can correspondingly push the first one-way valve 311 and the second one-way valve 312 to return to their positions, and the oil in the corresponding control chambers of the first one-way valve 311 and the second one-way valve 312 can return to the accumulator 40 through the third one-way valve 42, and the oil in the accumulator 40 cannot flow out through the third one-way valve 42, so that the closed state of the hydraulic oil circuit 30 can be finally achieved, thereby improving the stability and reliability of the hydraulic oil circuit 30 switching from the open state to the closed state.

[0062] Further, combined with Figure 1 and Figure 2 As shown, by electrically connecting the controller to the first switch solenoid valve 41, when the vehicle 1000 travels from an off-road condition to a flat road, it is necessary to switch the first switch solenoid valve 41 from an open state to a closed state, so that the hydraulic oil circuit 30 is switched from an open state to a closed state. If the controller obtains the pressure signals of the two pressure sensors 70 and determines that the difference between the pressure signals of the two pressure sensors 70 is small, it means that the stabilizer bar group 10 has returned to the center position. At this time, the controller can control the closing of the first switch solenoid valve 41, thereby making the hydraulic stabilizer bar system 100 more intelligent and controllable.

[0063] Combine Figure 1 As shown, the hydraulic stabilizer bar system 100 may further include a second switch solenoid valve 33, which is connected between the first one-way valve 311 and the end of the second one-way valve 312 facing away from the actuator 20. The second switch solenoid valve 33 is arranged in parallel with the bidirectional electronic oil pump 32, and the second switch solenoid valve 33 is electrically connected to the controller. When the bidirectional electronic oil pump 32 fails, the second switch solenoid valve 33 opens.

[0064] Specifically, the second switching solenoid valve 33 is connected between the first one-way valve 311 and the second one-way valve 312 facing away from the actuator 20, and the second switching solenoid valve 33 is arranged in parallel with the two-way electronic oil pump 32. When the two-way electronic oil pump 32 is operating normally, the second switching solenoid valve 33 is closed, and the two-way electronic oil pump 32 forms part of the hydraulic oil circuit 30, ensuring communication between the first one-way valve 311 and the second one-way valve 312 facing away from the actuator 20. When the two-way electronic oil pump 32 fails, the second switching solenoid valve 33 is opened, and the second switching solenoid valve 33 forms part of the hydraulic oil circuit 30, ensuring communication between the first one-way valve 311 and the second one-way valve 312 facing away from the actuator 20. In this way, by providing the second switching solenoid valve 33, a protection strategy for the hydraulic stabilizer bar system 100 can be implemented. When the two-way electronic oil pump 32 fails, the system still has the function of disconnecting the stabilizer bar assembly 10, thereby improving the safety and reliability of the hydraulic stabilizer bar system 100.

[0065] Furthermore, by electrically connecting the controller to the second switch solenoid valve 33, when the hydraulic oil circuit 30 is in an open state, if the bidirectional electronic oil pump 32 is stuck or stops, the hydraulic oil circuit 30 cannot be connected, resulting in the first stabilizer bar 11 and the second stabilizer bar 12 being unable to rotate relative to each other. At this time, the pressure of the two pressure sensors 70 will be different, and the controller can control the second switch solenoid valve 33 to open accordingly, and conduct the oil, thereby ensuring that the first stabilizer bar 11 and the second stabilizer bar 12 can be disconnected normally, which can make the hydraulic stabilizer bar system 100 more intelligent and controllable.

[0066] Combine Figure 1 As shown, there are multiple blades, which separate the interior of the shell into multiple first oil chambers 21 and multiple second oil chambers 22. The multiple first oil chambers 21 are connected, and one of the multiple first oil chambers 21 is connected to one end of the hydraulic oil circuit 30. The multiple second oil chambers 22 are connected, and one of the multiple second oil chambers 22 is connected to the other end of the hydraulic oil circuit 30.

[0067] Specifically, by connecting multiple first oil chambers 21, one of the multiple first oil chambers 21 is connected to one end of the hydraulic oil circuit 30, so that when one of the multiple first oil chambers 21 is subjected to pressure, the pressure will be further transmitted to other first oil chambers 21, thereby forming a torque to drive the blades to rotate. Similarly, by connecting multiple second oil chambers 22, one of the multiple second oil chambers 22 is connected to the other end of the hydraulic oil circuit 30, when one of the multiple second oil chambers 22 is subjected to pressure, the pressure will be further transmitted to other second oil chambers 22, thereby forming a torque to drive the blades to rotate. In this way, the rotation of the blades relative to the outer casing can be realized, and the normal operation of the actuator 20 can be guaranteed.

[0068] Further, combined with Figure 1 As shown, the number of first oil chambers 21 and second oil chambers 22 is the same, and the plurality of first oil chambers 21 and the plurality of second oil chambers 22 are staggered circumferentially within the housing. Specifically, by setting the number of first oil chambers 21 and the second oil chambers 22 to be the same and staggering the plurality of first oil chambers 21 and the plurality of second oil chambers 22 circumferentially within the housing, the distribution of the plurality of first oil chambers 21 and the plurality of second oil chambers 22 on the housing can be made more uniform and reasonable. Thus, when the first oil chamber 21 or the second oil chamber 22 is subjected to force, the force applied to the blade can also be more uniform, making the rotation of the blade relative to the housing more stable and reliable, thereby improving the stability and reliability of the hydraulic stabilizer bar system 100.

[0069] Combine Figure 1-Figure 7 As shown, the vehicle 1000 according to the present invention may include: a left suspension 200 and a right suspension 300 and the above-mentioned hydraulic stabilizer bar system 100, wherein a first angle sensor 400 is provided on the left suspension 200, and a second angle sensor 500 is provided on the right suspension 300, and the hydraulic stabilizer bar system 100 is provided between the left suspension 200 and the right suspension 300 and is provided with a controller, and the controller is electrically connected to the first angle sensor 400 and the second angle sensor 500.

[0070] Specifically, the hydraulic stabilizer bar system 100 is disposed between the left suspension 200 and the right suspension 300. One end of the first stabilizer bar 11 is connected to one of the left suspension 200 and the right suspension 300 of the vehicle 1000, and one end of the second stabilizer bar 12 is connected to the other of the left suspension 200 and the right suspension 300 of the vehicle 1000. This not only effectively meets the off-road requirements of the vehicle 1000, but also improves the roll stability and ride comfort of the vehicle 1000, thereby enhancing the user experience and improving the product competitiveness of the vehicle 1000. In addition, in addition to the actuator 20, the bidirectional electronic oil pump 32, the first switching solenoid valve 41, the one-way valve group 31, the accumulator 40, and the like can be integrated into the design, thereby improving the structural compactness of the hydraulic stabilizer bar system 100 and facilitating its assembly and application on the vehicle.

[0071] Furthermore, when the vehicle 1000 turns, the left suspension 200 and the right suspension 300 rotate to different degrees. By setting a first angle sensor 400 on the left suspension 200, the first angle sensor 400 can detect the rotation angle of the left suspension 200, and setting a second angle sensor 500 on the right suspension 300, the second angle sensor can detect the rotation angle of the right suspension 300, and the controller is electrically connected to the first angle sensor 400 and the second angle sensor 500. In this way, when the vehicle 1000 turns, the controller can obtain the first angle sensor The two-way electronic oil pump 32 can be controlled to start according to the angle signal of the first angle sensor 400 and the second angle sensor 500, and the two-way electronic oil pump 32 can be used to selectively pump oil into the first oil chamber 21 or the second oil chamber 22, so that the hydraulic stabilizer bar system 100 can actively resist roll, and the hydraulic stabilizer bar system 100 can be made more intelligent and controllable.

[0072] When a vehicle 1000 according to an embodiment of the present invention is in motion, the hydraulic stabilizer bar system 100 has multiple operating modes, which can be switched between to adapt to different driving conditions and application scenarios. The following describes the various operating modes of the hydraulic stabilizer bar system 100, taking into account the flow of oil in the hydraulic stabilizer bar system 100.

[0073] Combine Figure 3As shown, the hydraulic stabilizer bar system 100 has a locking mode, in which the first stabilizer bar 11 and the second stabilizer bar 12 cannot be disconnected. Specifically, after the stabilizer bar assembly 10 is leveled on a flat surface, the controller closes the first and second switching solenoid valves 41 and 33, and the first and second check valves 311 and 312 close. This prevents oil from flowing through the actuator 20, locking the stabilizer bar assembly 10 and preventing it from rotating. The stabilizer bar assembly 10 maintains its normal stabilizer bar function.

[0074] Combine Figure 4 As shown, the hydraulic stabilizer bar system 100 has a disconnect mode. In this mode, the first stabilizer bar 11 and the second stabilizer bar 12 are disconnected, releasing the rebound travel of the left and right suspensions 200 and 300, allowing the wheels to better contact the ground and enhancing off-road capability. Specifically, when the disconnect function of the stabilizer bar assembly 10 is activated, the controller controls the first switching solenoid valve 41 to open. The oil in the accumulator 40 flows into the control chambers of the first and second check valves 311 and 312, pushing the first and second check valves 311 and 312 to open. Assuming that the left front wheel falls into a pothole and the right front wheel is on flat ground, the oil in the first oil chamber 21 of the actuator 20 flows through the first check valve 311 and the hydraulic oil circuit 30 to the two-way electronic oil pump 32. The oil drives the gears within the two-way electronic oil pump 32 to rotate. The oil then flows out of the other oil port of the two-way electronic oil pump 32, passes through the hydraulic oil circuit 30 and the second check valve 312, and returns to the second oil chamber 22 of the actuator 20, completing the cycle. The reason why the other wheel fell into the pit is the same as above and will not be elaborated here.

[0075] Combine Figure 5 As shown, when the vehicle 1000 travels onto a flat road, the button to close the stabilizer bar group 10 is activated, and the controller obtains the pressure signals of the two pressure sensors 70. When the controller determines that the pressure difference between the two pressure sensors 70 is small, it means that the stabilizer bar group 10 has returned to the center position, and the controller closes the first switch solenoid valve 41. Due to the excitation of the road surface, the actuator 20 twists left and right, and the blades squeeze the first oil chamber 21 and the second oil chamber 22 to generate liquid pressure, pushing the first one-way valve 311 and the second one-way valve 312 on the left and right sides to return to their positions. The oil in the control chamber corresponding to the first one-way valve 311 and the second one-way valve 312 returns to the accumulator 40 through the third one-way valve 42, and the hydraulic stabilizer bar system 100 switches from the disconnection mode to the locking mode.

[0076] Combine Figure 6As shown, the hydraulic stabilizer bar system 100 has an active anti-roll mode. Specifically, when the vehicle 1000 turns, the controller can obtain the angle signals from the first angle sensor 400 and the second angle sensor 500, namely, the rotation angles of the left suspension 200 and the right suspension 300. The controller can then determine the turning direction of the vehicle 1000 based on the difference between the angle signals from the first angle sensor 400 and the second angle sensor 500. This allows the controller to control the steering of the bidirectional electronic oil pump 32 according to the actual turning direction of the vehicle 1000. For example, when turning right, the left wheel jumps, compressing the first oil chamber 21. To offset this torque, the controller controls the bidirectional electronic oil pump 32 based on the determination result to drive the oil flow in the hydraulic oil circuit 30. This allows the oil to not only open the first one-way valve 311 through the hydraulic oil circuit 30, but also open the second one-way valve 312 through the first anti-roll oil circuit 50. This pumps oil into the first oil chamber 21, increasing the pressure in the chamber, providing additional torque support, and reducing roll.

[0077] Furthermore, when the right turn is completed and the wheels are straightened, the first stabilizer bar 11 and the second stabilizer bar 12 have slightly twisted relative to each other due to the two-way electronic oil pump 32 filling the first oil chamber 21 with oil. At this time, the controller can reversely start the drive motor 322 of the two-way electronic oil pump 32 based on the angle signals from the first angle sensor 400 and the second angle sensor 500. The drive motor 322 is in transmission connection with the oil pump body 321 and transfers the excess oil in the first oil chamber 21 back to the second oil chamber 22. When the pressure difference between the two pressure sensors 70 is small, the stabilizer bar assembly 10 is restored and the controller controls the drive motor 322 to stop. The same principle applies to the left turn and is not further described here.

[0078] Combine Figure 7 As shown, the hydraulic stabilizer bar system 100 has a protection mode. Even if the bidirectional electronic oil pump 32 fails, the system still has the function of disconnecting the stabilizer bar assembly 10. Specifically, if the bidirectional electronic oil pump 32 becomes stuck or fails to operate normally under low-temperature conditions, the protection mode is activated. The controller controls the first on-off solenoid valve 41 to open, allowing oil from the accumulator 40 to flow into the control chambers of the first and second check valves 311 and 312, pushing the first and second check valves 311 and 312 to open. For example, if the left front wheel falls into a pothole and the right front wheel is on flat ground, the oil in the first oil chamber 21 of the actuator 20 flows through the first check valve 311 and the hydraulic oil circuit 30 to the bidirectional electronic oil pump 32. Since the bidirectional electronic oil pump 32 cannot rotate, the controller controls the second on-off solenoid valve 33 to open, and the oil flows through the second on-off solenoid valve 33 and the second check valve 312 back to the second oil chamber 22 of the actuator 20, completing the circulation. The same process applies to the other wheel falling into a pothole and is not described here.

[0079] Combine Figure 8As shown, the vehicle 1000 of the present application may adopt a control method of the hydraulic stabilizer bar system 100 , and the control method of the hydraulic stabilizer bar system 100 may mainly include the following steps:

[0080] S1, obtaining pressure signals from two pressure sensors 70;

[0081] S2. When the difference between the pressure signals of the two pressure sensors 70 is less than the preset pressure difference value, the first one-way valve 311 and the second one-way valve 312 are closed at the same time, and the hydraulic oil circuit 30 is in a closed state;

[0082] S3. When the difference between the pressure signals of the two pressure sensors 70 is greater than the preset pressure difference value, the first one-way valve 311 and the second one-way valve 312 are opened at the same time, and the hydraulic oil circuit 30 is in an open state.

[0083] Specifically, during the driving of the vehicle 1000, the two pressure sensors 70 can detect the pressure of the first oil chamber 21 and the second oil chamber 22 respectively. The controller can obtain the pressure signals of the two pressure sensors 70, and judge the size relationship between the difference between the pressure signals of the two pressure sensors 70 and the preset value of the pressure difference, and then control the opening and closing of the first one-way valve 311 and the second one-way valve 312 based on it.

[0084] When the difference between the pressure signals of the two pressure sensors 70 is less than the preset pressure difference value, it means that the vehicle 1000 is in a flat road non-turning condition. The controller can control the first one-way valve 311 and the second one-way valve 312 to be closed at the same time, so that the hydraulic oil circuit 30 is closed and the hydraulic stabilizer bar system 100 is in a locking mode, thereby ensuring the suspension stiffness of the vehicle 1000 and the driving stability of the vehicle 1000.

[0085] When the difference between the pressure signals of the two pressure sensors 70 is not less than the preset pressure difference value, it means that the vehicle 1000 is in an off-road condition or a flat road turning condition. The controller can control the first one-way valve 311 and the second one-way valve 312 to open at the same time, so that the hydraulic oil circuit 30 is in an open state, thereby selectively putting the hydraulic stabilizer bar system 100 in a disconnected mode according to the actual working conditions to ensure the ground contact of the wheels and the off-road performance of the vehicle 1000, or putting the hydraulic stabilizer bar system 100 in an active anti-roll mode to make the two-way electronic oil pump 32 output the main force to the hydraulic oil circuit 30 to ensure the anti-roll ability of the vehicle 1000.

[0086] Combine Figure 9 As shown, the control method of the hydraulic stabilizer bar system 100 may further include:

[0087] S4, obtaining angle signals of the first angle sensor 400 and the second angle sensor 500;

[0088] S5. When the angle signal difference between the first angle sensor 400 and the second angle sensor 500 is greater than the preset angle difference value, the drive motor 322 is controlled to drive the oil pump body 321 to drive the oil in the hydraulic oil circuit 30 to flow;

[0089] S6. When the angle signal difference between the first angle sensor 400 and the second angle sensor 500 is not greater than the preset angle difference value, the driving motor 322 and the oil pump body 321 are controlled to disconnect transmission.

[0090] Specifically, when the vehicle 1000 is driving on a flat road, the first angle sensor 400 and the second angle sensor 500 can respectively detect the turning angles of the left suspension 200 and the right suspension 300. The controller can obtain the angle signals of the first angle sensor 400 and the second angle sensor 500, and determine the size relationship between the difference between the angle signals of the first angle sensor 400 and the second angle sensor 500 and the preset value of the angle difference, and then control the rotation of the drive motor 322 accordingly.

[0091] When the angle signal difference between the first angle sensor 400 and the second angle sensor 500 is greater than the preset angle difference value, it means that the vehicle 1000 is in a turning state. The drive motor 322 can be controlled to drive the gears in the oil pump body 321 to rotate, and output the main force to the hydraulic oil circuit 30, thereby driving the oil in the hydraulic oil circuit 30 to flow, and realizing the active anti-roll function of the hydraulic stabilizer bar system 100, thereby improving the roll stability of the vehicle 1000.

[0092] When the angle signal difference between the first angle sensor 400 and the second angle sensor 500 is not greater than the preset angle difference value, it means that the vehicle 1000 is not in a turning state. At this time, there is no need to start the active anti-roll function of the hydraulic stabilizer bar system 100. The drive motor 322 and the oil pump body 321 can be controlled to disconnect the transmission, so that the bidirectional electronic oil pump 32 can participate in the construction of the hydraulic oil circuit 30 as a hydraulic motor.

[0093] Combine Figure 10As shown, step S5 may include: S5-1, the driving motor 322 drives the oil pump body 321 to drive the oil in the hydraulic oil circuit 30 to flow from the first oil chamber 21 to the second oil chamber 22, or to drive the oil in the hydraulic oil circuit 30 to flow from the second oil chamber 22 to the first oil chamber 21. Specifically, when the controller controls the driving motor 322 to drive the oil pump body 321, thereby driving the oil in the hydraulic oil circuit 30 to flow, the controller can determine the turning direction of the vehicle 1000 based on the angle signals of the first angle sensor 400 and the second angle sensor 500, and thus control the rotation direction of the driving motor 322 accordingly, so that the oil pump body 321 selectively drives the oil in the hydraulic oil circuit 30 to flow from the first oil chamber 21 to the second oil chamber 22, or to drive the oil in the hydraulic oil circuit 30 to flow from the second oil chamber 22 to the first oil chamber 21.

[0094] Further, combined with Figure 10 As shown, step S5-1 may include:

[0095] S5-1-1. When the bidirectional electronic oil pump 32 drives the oil in the hydraulic oil circuit 30 to flow from the first oil chamber 21 to the second oil chamber 22, one end of the second anti-roll oil circuit 60 is connected to the portion of the hydraulic oil circuit 30 between the corresponding second one-way valve 312 and the bidirectional electronic oil pump 32, and the other end is connected to the first one-way valve 311 to selectively open the first one-way valve 311.

[0096] S5-1-2. When the bidirectional electronic oil pump 32 drives the oil in the hydraulic oil circuit 30 to flow from the second oil chamber 22 to the first oil chamber 21, one end of the first anti-roll oil circuit 50 is connected to the part of the hydraulic oil circuit 30 corresponding to the first one-way valve 311 and the bidirectional electronic oil pump 32, and the other end is connected to the second one-way valve 312 to selectively open the second one-way valve 312.

[0097] Specifically, when the driving motor 322 drives the oil pump body 321 to drive the oil in the hydraulic oil circuit 30 to flow from the first oil chamber 21 to the second oil chamber 22, or drives the oil in the hydraulic oil circuit 30 to flow from the second oil chamber 22 to the first oil chamber 21, the bidirectional electronic oil pump 32 outputs the main force to the hydraulic oil circuit 30, thereby driving the oil in the hydraulic oil circuit 30 to flow, and also drives the oil in the hydraulic oil circuit 30 to selectively open the second one-way valve 312 through the first anti-roll oil circuit 50, or open the first one-way valve 311 through the second anti-roll oil circuit 60.

[0098] When the two-way electronic oil pump 32 drives the oil in the hydraulic oil circuit 30 to flow from the first oil chamber 21 to the second oil chamber 22, the oil can not only be pumped to the second one-way valve 312 to open the second one-way valve 312, but also can flow to the first one-way valve 311 through the second anti-roll oil circuit 60 to open the first one-way valve 311, thereby ensuring that the oil in the first oil chamber 21 can be pumped to the second oil chamber 22 through the first one-way valve 311, the two-way electronic oil pump 32 and the second one-way valve 312 on the hydraulic oil circuit 30 in sequence, ensuring the normal operation of the hydraulic stabilizer bar system 100, and making the control logic of the hydraulic stabilizer bar system 100 simpler and more reliable.

[0099] When the two-way electronic oil pump 32 drives the oil in the hydraulic oil circuit 30 to flow from the second oil chamber 22 to the first oil chamber 21, the oil can not only be pumped to the first one-way valve 311 to open the first one-way valve 311, but also can flow to the second one-way valve 312 through the first anti-roll oil circuit 50 to open the second one-way valve 312, thereby ensuring that the oil in the second oil chamber 22 can be pumped to the first oil chamber 21 in turn through the second one-way valve 312, the two-way electronic oil pump 32 and the first one-way valve 311 on the hydraulic oil circuit 30, ensuring the normal operation of the hydraulic stabilizer bar system 100, and making the control logic of the hydraulic stabilizer bar system 100 simpler and more reliable.

[0100] 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 to indicate orientations or positional relationships based on the orientations 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 should not be understood as limiting the present invention.

[0101] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0102] While 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 invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A hydraulic stabilizer bar system, characterized in that: include: A stabilizer bar group (10), the stabilizer bar group (10) comprising a first stabilizer bar (11) and a second stabilizer bar (12), one end of the first stabilizer bar (11) being connected to one of a left suspension (200) and a right suspension (300) of a vehicle (1000), and one end of the second stabilizer bar (12) being connected to the other of the left suspension (200) and the right suspension (300) of the vehicle (1000); An actuator (20), the actuator (20) comprising a housing and a blade, the blade being rotatably disposed inside the housing and separating the interior of the housing into a first oil chamber (21) and a second oil chamber (22), the other end of the first stabilizing rod (11) being connected to the housing, and the other end of the second stabilizing rod (12) being connected to the blade; a hydraulic oil circuit (30), wherein the hydraulic oil circuit (30) is arranged outside the actuator (20), one end of the hydraulic oil circuit (30) is connected to the first oil chamber (21), and the other end is connected to the second oil chamber (22), and the hydraulic oil circuit (30) has an open state and a closed state. When the hydraulic oil circuit (30) is in the open state, the first oil chamber (21) and the second oil chamber (22) are connected, and the blade is rotatable relative to the housing so that the first stabilizer bar (11) and the second stabilizer bar (12) can rotate relative to each other; when the hydraulic oil circuit (30) is in the closed state, the first oil chamber (21) and the second oil chamber (22) are disconnected, and the blade is locked and cannot rotate relative to the housing, so that the first stabilizer bar (11) and the second stabilizer bar (12) are locked and cannot rotate relative to each other; a one-way valve group (31), the one-way valve group (31) being arranged in the hydraulic oil circuit (30) and comprising a first one-way valve (311) and a second one-way valve (312), the first one-way valve (311) and the second one-way valve (312) being arranged at intervals, the first one-way valve (311) being in communication with the first oil chamber (21), the second one-way valve (312) being in communication with the second oil chamber (22), the first one-way valve (311) and the second one-way valve (312) being selectively opened and closed simultaneously to switch the hydraulic oil circuit (30) between an open state and a closed state; a bidirectional electronic oil pump (32), the bidirectional electronic oil pump (32) being arranged in the hydraulic oil circuit (30) and communicating between the first one-way valve (311) and the second one-way valve (312); An accumulator (40), the accumulator (40) being provided with an oil outlet and an oil storage port, the oil outlet being in communication with both the first one-way valve (311) and the second one-way valve (312), and the oil storage port being in communication with the first one-way valve (311) and the second one-way valve (312); a first switch solenoid valve (41), the first switch solenoid valve (41) being arranged at the oil outlet; A third one-way valve (42) is provided at the oil storage port. When the first switch solenoid valve (41) is switched from an open state to a closed state, the oil in the corresponding control chambers of the first one-way valve (311) and the second one-way valve (312) is returned to the accumulator (40) through the third one-way valve (42), and the oil in the accumulator (40) cannot flow out through the third one-way valve (42).

2. The hydraulic stabilizer bar system according to claim 1, characterized in that: The bidirectional electronic oil pump (32) comprises an oil pump body (321) and a drive motor (322); the oil pump body (321) is connected between the first one-way valve (311) and the second one-way valve (312); and the drive motor (322) is selectively connected to the oil pump body (321) in a transmission manner.

3. The hydraulic stabilizer bar system according to claim 2, characterized in that: The invention also includes a first anti-roll oil circuit (50), one end of which is selectively connected to a portion of the hydraulic oil circuit (30) corresponding to the first one-way valve (311) and the bidirectional electronic oil pump (32), and the other end of which is connected to the second one-way valve (312) to selectively open the second one-way valve (312).

4. The hydraulic stabilizer bar system according to claim 2, characterized in that: The invention also includes a second anti-roll oil circuit (60), one end of which is selectively connected to a portion of the hydraulic oil circuit (30) corresponding to the second one-way valve (312) and the two-way electronic oil pump (32), and the other end of which is connected to the first one-way valve (311) to selectively open the first one-way valve (311).

5. The hydraulic stabilizer bar system according to claim 2, characterized in that: It also includes a pressure sensor (70) and a controller, wherein there are two pressure sensors (70), one of the two pressure sensors (70) is arranged at a position adjacent to one end of the hydraulic oil circuit (30), and the other is arranged at a position adjacent to the other end of the hydraulic oil circuit (30), and both of the two pressure sensors (70) are electrically connected to the controller, and the controller is electrically connected to the first one-way valve (311), the second one-way valve (312) and the bidirectional electronic oil pump (32).

6. A vehicle, characterized in that: include: A left-side suspension (200), wherein the left-side suspension (200) is provided with a first angle sensor (400); a right side suspension (300), wherein the right side suspension (300) is provided with a second angle sensor (500); The hydraulic stabilizer bar system (100) according to any one of claims 1 to 5, wherein the hydraulic stabilizer bar system (100) is arranged between the left suspension (200) and the right suspension (300), and the hydraulic stabilizer bar system (100) is provided with a controller, and the controller is electrically connected to both the first angle sensor (400) and the second angle sensor (500).

7. A control method for a hydraulic stabilizer bar system, applicable to the vehicle according to claim 6, characterized in that: include: Obtaining pressure signals from two pressure sensors (70); When the difference between the pressure signals of the two pressure sensors (70) is less than a preset pressure difference value, the first one-way valve (311) and the second one-way valve (312) are closed simultaneously, and the hydraulic oil circuit (30) is in a closed state; When the difference between the pressure signals of the two pressure sensors (70) is not less than a preset pressure difference value, the first one-way valve (311) and the second one-way valve (312) are opened simultaneously, and the hydraulic oil circuit (30) is in an open state.

8. The control method of the hydraulic stabilizer bar system according to claim 7, characterized in that: Also includes: Acquiring angle signals from the first angle sensor (400) and the second angle sensor (500); When the angle signal difference between the first angle sensor (400) and the second angle sensor (500) is greater than a preset angle difference value, controlling the drive motor (322) to drive the oil pump body (321) to drive the oil in the hydraulic oil circuit (30) to flow; When the angle signal difference between the first angle sensor (400) and the second angle sensor (500) is not greater than a preset angle difference value, the drive motor (322) and the oil pump body (321) are controlled to disconnect transmission.

9. The control method of the hydraulic stabilizer bar system according to claim 8, characterized in that: The step of controlling the drive motor (322) to drive the oil pump body (321) to drive the oil in the hydraulic oil circuit (30) to flow when the angle signal difference between the first angle sensor (400) and the second angle sensor (500) is greater than a preset angle difference value comprises: The driving motor (322) drives the oil pump body (321) to drive the oil in the hydraulic oil circuit (30) to flow from the first oil chamber (21) to the second oil chamber (22), or drives the oil in the hydraulic oil circuit (30) to flow from the second oil chamber (22) to the first oil chamber (21).

10. The control method of the hydraulic stabilizer bar system according to claim 9, characterized in that: The step of driving the oil pump body (321) with the driving motor (322) to drive the oil in the hydraulic oil circuit (30) to flow from the first oil chamber (21) to the second oil chamber (22), or driving the oil in the hydraulic oil circuit (30) to flow from the second oil chamber (22) to the first oil chamber (21) comprises: When the bidirectional electronic oil pump (32) drives the oil in the hydraulic oil circuit (30) to flow from the first oil chamber (21) to the second oil chamber (22), one end of the second anti-roll oil circuit (60) is connected to the portion of the hydraulic oil circuit (30) corresponding to the second one-way valve (312) and the bidirectional electronic oil pump (32), and the other end is connected to the first one-way valve (311) to selectively open the first one-way valve (311); When the bidirectional electronic oil pump (32) drives the oil in the hydraulic oil circuit (30) to flow from the second oil chamber (22) to the first oil chamber (21), one end of the first anti-roll oil circuit (50) is connected to the portion of the hydraulic oil circuit (30) corresponding to the first one-way valve (311) and the bidirectional electronic oil pump (32), and the other end is connected to the second one-way valve (312) to selectively open the second one-way valve (312).

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