Active damping device, active suspension and vehicle

Abstract

The utility model provides an active damping device, an active suspension and a vehicle, the active damping device comprises a damper, a lifting oil way and a bypass oil way, the damper comprises an inner cylinder body and an outer cylinder body, the inner cylinder body is arranged in a first cavity of the outer cylinder body in a penetrating mode, and the inner cylinder body is provided with a second cavity; the lifting oil way communicates with the first cavity and the second cavity and is connected with a hydraulic pump in series. The hydraulic pump is used for driving hydraulic oil to flow into the first cavity and the second cavity so as to drive the inner cylinder body to move relative to the outer cylinder body. The bypass oil way communicates with the first cavity and the second cavity and is connected with an electromagnetic valve in series, and the electromagnetic valve is used for opening and closing the bypass oil way. According to the active damping device provided by the embodiment of the invention, damping can be performed through the bypass oil way when the damper is lifted, so that a vehicle can still have a better damping effect after the ground clearance is changed; and moreover, the shock absorber can have multiple shock absorption modes, so that the shock absorber can adapt to more driving working conditions, and the applicability of the shock absorber is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of vehicle engineering technology, and in particular to an active vibration reduction device, an active suspension and a vehicle. Background Art

[0002] In the related art, an active shock absorber with a solenoid valve disposed on the channel between the inner cylinder and the outer cylinder actively controls the inner diameter of the flow channel through the solenoid valve to change the damping to adapt to the corresponding road surface and improve the shock absorption effect; when the vehicle is traveling on a road with large ups and downs, the shock absorber is required to close the oil circuit to increase the ground clearance of the vehicle body so that the vehicle can pass through the road with large ups and downs; however, after the shock absorber's oil circuit is closed, the shock absorption function of the shock absorber is also shut down, and the shock absorber cannot perform effective vibration reduction adjustment. Utility Model Content

[0003] In order to solve the above technical problems or at least partially solve the above technical problems, the present disclosure provides an active vibration reduction device, an active suspension and a vehicle.

[0004] The present application discloses an active vibration reduction device, comprising: a shock absorber, comprising an inner cylinder body and an outer cylinder body, the inner cylinder body being inserted into a first cavity of the outer cylinder body, and the inner cylinder body having a second cavity; a lifting oil circuit, connecting the first cavity with the second cavity, and having a hydraulic pump in series, the hydraulic pump being used to drive hydraulic oil to flow into the first cavity and driving hydraulic oil to flow into the second cavity, so as to drive the inner cylinder body to move relative to the outer cylinder body; a bypass oil circuit, connecting the first cavity with the second cavity, and having a solenoid valve in series, the solenoid valve being used to open and close the bypass oil circuit.

[0005] Optionally, an oil delivery channel is provided on the inner cylinder body, the oil delivery channel is connected to the first chamber and is separated from the second chamber, and the oil delivery channel is connected to the lifting oil circuit.

[0006] Optionally, a first communication port through which the oil delivery passage communicates with the first chamber is disposed at one axial end of the inner cylinder body.

[0007] Optionally, an oil inlet connected to the second chamber is provided on the radial outer surface of the inner cylinder body, and a second connecting port connecting the oil delivery channel and the lifting oil circuit is provided on the radial outer surface of the inner cylinder body, and the oil inlet and the second connecting port are both provided at one end of the inner cylinder body away from the outer cylinder body.

[0008] Optionally, the solenoid valve is a CDC solenoid valve, and is suitable for adjusting the flow area of ​​the bypass oil passage when the bypass oil passage is opened.

[0009] The present application also discloses an active suspension, comprising: a subframe; two connecting rod assemblies, respectively connected to the left and right sides of the subframe and used to connect the steering knuckles on the corresponding sides; two active vibration damping devices arranged corresponding to the connecting rod assemblies, the active vibration damping device is the active vibration damping device provided according to the above disclosure, one end of the shock absorber is connected to the connecting rod assembly on the corresponding side, and the other end is used to connect to the vehicle body frame.

[0010] Optionally, the connecting rod assembly includes multiple connecting rods, the multiple connecting rods include a first connecting rod and a second connecting rod, one end of the shock absorber is connected to the first connecting rod on the corresponding side, and the other end is used to connect to the vehicle body frame; the active suspension also includes a lateral stabilizer bar, and the two ends of the lateral stabilizer bar are respectively connected to the two second connecting rods.

[0011] Optionally, the active suspension also includes: two shock-absorbing springs arranged corresponding to the connecting rod assembly, one end of the shock-absorbing spring is connected to the first connecting rod on the corresponding side, and the other end is used to connect to the vehicle body frame; the active suspension also includes a lateral stabilizer bar, and both ends of the lateral stabilizer bar are respectively connected to the two second connecting rods.

[0012] Optionally, the lateral stabilizer bar is an active lateral stabilizer bar.

[0013] The present application also discloses a vehicle, comprising: the active suspension provided according to the above disclosure.

[0014] Compared with the prior art, the technical solution provided by the embodiments of the present disclosure has the following advantages:

[0015] The active vibration reduction device provided by the embodiment of the present disclosure, by providing a bypass oil circuit and a lifting oil circuit to connect the shock absorber, can raise and lower the shock absorber through the lifting oil circuit, thereby increasing the ground clearance of the vehicle and improving the passability of the vehicle, and can reduce vibration through the bypass oil circuit when the shock absorber is raised, so that the vehicle can still have a good vibration reduction effect after the ground clearance changes, thereby improving the vibration reduction performance of the vehicle and improving the comfort of the vehicle; moreover, the shock absorber can reduce vibration of the vehicle only through the lifting oil circuit, or can reduce vibration of the vehicle only through the bypass oil circuit, or can reduce vibration of the vehicle through the lifting oil circuit and the bypass oil circuit, so that the shock absorber can have multiple vibration reduction modes, so that the shock absorber can adapt to more driving conditions, improve the applicability of the shock absorber, and improve the overall performance of the active vibration reduction device.

[0016] The active suspension provided in the embodiment of the present disclosure has multiple vibration reduction modes by setting the active vibration reduction device provided in the above disclosure, which can make the vehicle still have a good vibration reduction effect after the ground clearance changes, improve the vibration reduction performance of the vehicle, make the active suspension adapt to more driving conditions, improve the applicability of the active suspension, and improve the overall performance of the active suspension.

[0017] The vehicle provided by the embodiment of the present disclosure can achieve a change in the ground clearance of the vehicle by setting the active suspension provided by the above disclosure. At the same time, it can still have good vibration reduction performance after the ground clearance changes, thereby improving the comfort of the vehicle. It can also enable the vehicle to adapt to more driving conditions, improve the applicability of the vehicle, and improve the overall performance of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] Figure 1 A perspective view of an active suspension according to some embodiments of the present disclosure;

[0021] Figure 2 for Figure 1 A three-dimensional view of the active suspension from another perspective;

[0022] Figure 3 for Figure 1 Exploded view of the active suspension in;

[0023] Figure 4 for Figure 1 Structural diagram of active suspension in FIG.

[0024] Figure 5 for Figure 1 Exploded view of the active vibration reduction device in the figure.

[0025] Among them, 100, active suspension;

[0026] 10. Active vibration reduction device;

[0027] 1. shock absorber; 11. inner cylinder body; 111. oil inlet; 112. second connecting port; 12. outer cylinder body;

[0028] 2. Lifting oil circuit; 21. Hydraulic pump; 22. Bracket;

[0029] 30. Subframe; 31. Front crossbeam; 32. Rear crossbeam;

[0030] 40. Link assembly; 41. First link; 42. Second link; 43. Front lower control arm; 44. Front upper control arm; 45. Rear lower control arm; 46. Rear upper control arm; 47. Rear steering tie rod;

[0031] 50. Damping spring;

[0032] 60. Lateral stabilizer bar;

[0033] 70. Rear wheel steering motor;

[0034] 80. Steering knuckle. DETAILED DESCRIPTION

[0035] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0036] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0037] Reference Figure 1-Figure 5 The present application discloses an active vibration reduction device 10 including a shock absorber 1, a lifting oil circuit 2 and a bypass oil circuit. The shock absorber 1 includes an inner cylinder body 11 and an outer cylinder body 12. The inner cylinder body 11 is arranged in a first cavity of the outer cylinder body 12, and the inner cylinder body 11 has a second cavity. For example, the shock absorber 1 may also include a piston, which is arranged in the first cavity and movably cooperates with the first cavity, and the piston is connected to the inner cylinder body 11.

[0038] The lifting oil circuit 2 connects the first chamber and the second chamber, and is connected in series with a hydraulic pump 21, which is used to drive the hydraulic oil to flow into the first chamber and drive the hydraulic oil to flow into the second chamber to drive the inner cylinder body 11 to move relative to the outer cylinder body 12; for example, an oil storage chamber can also be connected in series in the lifting oil circuit 2, and the oil storage chamber is used to store hydraulic oil. The hydraulic pump 21 is suitable for replenishing the hydraulic oil in the oil storage chamber into the first chamber and the second chamber to increase the pressure of the hydraulic oil in the cylinder body; the hydraulic oil in the first chamber and the second chamber is suitable for being depressurized to the oil storage chamber through the lifting oil circuit 2 to reduce the pressure of the hydraulic oil in the first chamber or the second chamber.

[0039] When the ground clearance of the vehicle needs to be increased, the hydraulic pump 21 can be started to drive the hydraulic oil to flow into the first chamber, drive the inner cylinder 11 to move toward the outside of the first chamber, change the height of the shock absorber 1, and increase the ground clearance of the vehicle.

[0040] When the vehicle requires higher maneuverability (for example, when the vehicle is traveling on a curve or at high speed), higher damping is required for vibration reduction, and the hydraulic pump 21 can be started. By controlling the hydraulic pump 21 to drive the hydraulic oil to flow to the first chamber or drive the hydraulic oil to flow to the second chamber at a higher speed, the pressure of the hydraulic oil in the first chamber is increased or the pressure of the hydraulic oil in the second chamber is increased, so that the shock absorber 1 has higher damping to meet the vehicle's motion performance requirements.

[0041] When the vehicle requires higher comfort (for example, when the vehicle is traveling on a slightly uneven road surface, or when the vehicle is traveling at a low speed), moderate damping is needed for vibration reduction, and the hydraulic pump 21 can be started. By controlling the hydraulic pump 21 to drive the hydraulic oil to flow to the first chamber or to drive the hydraulic oil to flow to the second chamber at a lower speed, the pressure of the hydraulic oil in the cylinder body is adjusted to be more moderate or smaller, so that the shock absorber 1 has moderate or smaller damping, so that the shock absorber 1 can perform a large-scale vibration reduction adjustment to meet the vehicle's comfort requirements.

[0042] By connecting the hydraulic pump 21 in series in the lifting oil circuit 2, the hydraulic pump 21 can actively control the pressure of the hydraulic oil in the first chamber and the second chamber to change the damping of the shock absorber 1, thereby achieving the vibration reduction effect of the active shock absorber 1 and improving the comfort of the vehicle; moreover, the hydraulic pump 21 can control the flow direction of the hydraulic oil to control the lifting and lowering of the shock absorber 1, so that the active suspension 100 can adapt to the road surface with large undulations and improve the vehicle's passability.

[0043] The bypass oil circuit communicates the first chamber with the second chamber and is connected in series with a solenoid valve, which is used to open and close the bypass oil circuit.

[0044] When the ground clearance of the vehicle needs to be increased, the hydraulic pump 21 can be started first to drive the hydraulic oil to flow into the first chamber, drive the inner cylinder 11 to move toward the outside of the first chamber, change the height of the shock absorber 1, and increase the ground clearance of the vehicle to a preset height; then, the solenoid valve is started to open the bypass oil circuit, so that the bypass oil circuit and the shock absorber 1 form a circulating shock-absorbing oil circuit, so that the shock absorber 1 can perform vibration reduction through the bypass oil circuit, so that the vehicle still has a good vibration reduction effect when the ground clearance changes, thereby improving the vibration reduction performance of the vehicle and improving the comfort of the vehicle.

[0045] For example, the solenoid valve is a CDC solenoid valve, and the solenoid valve is suitable for adjusting the flow area of ​​the bypass oil circuit when the bypass oil circuit is opened, that is, adjusting the damping of the circulating vibration damping oil circuit formed by the bypass oil circuit and the shock absorber 1 .

[0046] After the ground clearance of the vehicle changes, the active vibration reduction device 10 can actively adjust the damping of the shock absorber 1 through the solenoid valve, so that the vehicle still has a good vibration reduction effect when the ground clearance changes, thereby improving the vibration reduction performance of the vehicle and improving the comfort of the vehicle.

[0047] When the ground clearance of the vehicle does not need to be raised or lowered and only vibration reduction is needed, the active vibration reduction device 10 can be adjusted by opening the lifting oil circuit 2, closing the bypass oil circuit through the solenoid valve, and only performing vibration reduction adjustment through the lifting oil circuit 2, thereby realizing active vibration reduction of the active vibration reduction device 10 and improving the vibration reduction effect of the active vibration reduction device 10.

[0048] When the ground clearance of the vehicle does not need to be raised or lowered and only vibration reduction is needed, the active vibration reduction device 10 can also close the lifting oil circuit 2, open the bypass oil circuit through the solenoid valve, and perform vibration reduction adjustment only through the bypass oil circuit, thereby realizing passive vibration reduction of the active vibration reduction device 10, reducing the energy consumption of the active vibration reduction device 10, and extending the vehicle's cruising range.

[0049] When the ground clearance of the vehicle does not need to be raised or lowered and only vibration reduction is needed, the active vibration reduction device 10 can also be implemented by connecting the lifting oil circuit 2, opening the bypass oil circuit through the solenoid valve, and using the lifting oil circuit 2 and the bypass oil circuit to perform vibration reduction adjustment at the same time, thereby realizing the two-stage vibration reduction of the active vibration reduction device 10 and further improving the vibration reduction effect of the active vibration reduction device 10.

[0050] For example, the active vibration reduction device 10 may further include a road surface recognition system, which is used to recognize the road surface conditions in the vehicle's forward direction, and control the opening and closing of the lifting oil circuit 2 and the bypass oil circuit according to the road surface conditions. Optionally, the road surface recognition system may include a camera module, an analysis module, and a control module, wherein the camera module is used to capture the road surface in the vehicle's forward direction, and transmit the captured images to the analysis module, wherein the analysis module is used to determine the pothole degree of the road surface according to the road surface images captured by the camera module, and the control module is used to control the opening and closing of the lifting oil circuit 2 and the bypass oil circuit according to the pothole degree of the road surface.

[0051] When the road surface is relatively flat, the road surface recognition system can control the lifting oil circuit 2 to close and control the bypass oil circuit to open, so that the active vibration reduction device 10 only reduces vibration through the bypass oil circuit, thereby reducing the energy consumption of the active vibration reduction device 10 and extending the vehicle's cruising range.

[0052] When the road surface is undulating, the road surface recognition system can control the opening of the lifting oil circuit 2 and the bypass oil circuit, so that the active vibration reduction device 10 can increase the ground clearance of the vehicle through the lifting oil circuit 2, and the active vibration reduction device 10 can reduce vibration through the bypass oil circuit, thereby ensuring the vehicle's passability and stability.

[0053] The active vibration reduction device 10 provided in the embodiment of the present disclosure connects the shock absorber 1 by setting a bypass oil circuit and a lifting oil circuit 2. The shock absorber 1 can be raised and lowered through the lifting oil circuit 2 to increase the ground clearance of the vehicle and improve the passability of the vehicle. The shock absorber 1 can be reduced by the bypass oil circuit when it is raised, so that the vehicle can still have a good vibration reduction effect after the ground clearance changes, thereby improving the vibration reduction performance of the vehicle and improving the comfort of the vehicle. Moreover, the shock absorber 1 can reduce the vibration of the vehicle only through the lifting oil circuit 2, or only through the bypass oil circuit, or through the lifting oil circuit 2 and the bypass oil circuit, so that the shock absorber 1 can have multiple vibration reduction modes, so that the shock absorber 1 can adapt to more driving conditions, improve the applicability of the shock absorber 1, and improve the overall performance of the active vibration reduction device 10.

[0054] According to some embodiments provided by the present disclosure, an oil delivery channel is provided on the inner cylinder body 11, the oil delivery channel is connected to the first chamber, and the oil delivery channel is separated from the second chamber, and the oil delivery channel is connected to the lifting oil circuit 2. In this way, the hydraulic pipelines of the lifting oil circuit 2 can be connected to the inner cylinder body 11, so as to prevent the hydraulic pipes from being damaged by following the lifting of the shock absorber 1, improve the reliability of the hydraulic pipes, extend the service life of the hydraulic pipes, and improve the reliability of the active vibration reduction device 10.

[0055] According to some embodiments provided by the present disclosure, the first communication port through which the oil delivery channel communicates with the first chamber is disposed at one axial end of the inner cylinder body 11. This allows the shock absorber 1 to have a larger telescopic range, so that the shock absorber 1 can meet the vehicle's demand for a large ground clearance change, improve the applicability of the shock absorber 1, increase the range of change of the vehicle's ground clearance, and improve the vehicle's passability.

[0056] Reference Figure 5 According to some embodiments provided by the present disclosure, an oil inlet 111 communicating with the second chamber is provided on the radial outer surface of the inner cylinder body 11, and a second communicating port 112 communicating with the oil delivery passage and the lifting oil circuit 2 is provided on the radial outer surface of the inner cylinder body 11, and the oil inlet 111 and the second communicating port 112 are both provided at one end of the inner cylinder body 11 away from the outer cylinder body 12.

[0057] This can prevent the hydraulic pipe of the lifting oil circuit 2 from interfering with the outer cylinder 12, improve the reliability of the hydraulic pipe, extend the service life of the hydraulic pipe, and improve the reliability of the active vibration reduction device 10. At the same time, this allows the shock absorber 1 to have a larger telescopic range, so that the shock absorber 1 can meet the vehicle's demand for large ground clearance changes, improve the applicability of the shock absorber 1, increase the range of change of the vehicle's ground clearance, and improve the vehicle's passability.

[0058] For example, the outer cylinder 12 is connected to the connecting rod of the active suspension 100, the outer cylinder 12 is connected to the vehicle frame, the hydraulic pump 21 is arranged on the sub-frame 30 of the active suspension 100, and part of the hydraulic pipe of the lifting oil circuit 2 is arranged on the sub-frame 30. In this way, the range of movement of the hydraulic pipe of the lifting oil circuit 2 relative to the sub-frame 30 can be further reduced, the hydraulic pipe of the lifting oil circuit 2 can be prevented from being pulled off from the hydraulic pump 21, or the hydraulic pipe of the lifting oil circuit 2 can be prevented from being pulled off from the shock absorber 1, the degree of wear between the hydraulic pipe of the lifting oil circuit 2 and the sub-frame 30 can be reduced, the reliability of the lifting oil circuit 2 can be improved, and the reliability of the active vibration reduction device 10 can be improved.

[0059] For example, one end of the bypass oil circuit is connected to the second connecting port 112, and the other end is connected to the oil inlet 111, so that the bypass oil circuit can be led out of the shock absorber 1 to avoid interference between the bypass oil circuit and the shock absorber 1, the shock absorber 1 and the connecting rod.

[0060] Reference Figure 1-Figure 4 The present application also discloses an active suspension 100, comprising: a subframe 30, two connecting rod assemblies 40 and two active vibration damping devices 10; the two connecting rod assemblies 40 are respectively connected to the left and right sides of the subframe 30, and the two connecting rod assemblies 40 are respectively used to connect the steering knuckles 80 on the corresponding sides; the two active vibration damping devices 10 are arranged in a one-to-one correspondence with the two connecting rod assemblies 40, and the active vibration damping device 10 is the active vibration damping device 10 provided above according to the present disclosure, one end of the shock absorber 1 is connected to the connecting rod assembly 40 on the corresponding side, and the other end is used to connect to the vehicle body frame.

[0061] For example, the subframe 30 includes a front crossbeam 31 and a rear crossbeam 32, the rear wheel steering motor 70 is arranged on the rear crossbeam 32, and the rear wheel steering motor 70 is located at the rear lower part of the rear crossbeam 32, the hydraulic pump 21 of the active vibration reduction device 10 is suspended on the rear crossbeam 32 through the bracket 22, and avoids the rear wheel steering motor 70, and the horizontal and vertical sections of the lateral stabilizer bar 60 are arranged close to the front crossbeam 31 and are located at the front lower part of the front crossbeam 31. In this way, the overall structure of the active suspension 100 can be arranged more compactly.

[0062] The active suspension 100 provided in the embodiment of the present disclosure has a plurality of vibration reduction modes by setting the active vibration reduction device 10 provided in the disclosure above, so that the vehicle can still have a good vibration reduction effect after the ground clearance changes, thereby improving the vibration reduction performance of the vehicle, and enabling the active suspension 100 to adapt to more driving conditions, thereby improving the applicability of the active suspension 100 and improving the overall performance of the active suspension 100.

[0063] Reference Figure 1-Figure 3According to some embodiments provided by the present disclosure, the connecting rod assembly 40 includes a plurality of connecting rods, the plurality of connecting rods include a first connecting rod 41 and a second connecting rod 42, one end of the shock absorber 1 is connected to the first connecting rod 41 on the corresponding side, and the other end is used to connect to the vehicle body frame;

[0064] It should be explained that the term "plurality" in this article means two or more than two.

[0065] The active suspension 100 further includes a lateral stabilizer bar 60, and both ends of the lateral stabilizer bar 60 are respectively connected to the two second connecting rods 42. This can reduce the roll of the vehicle body, improve the anti-roll performance of the vehicle, enhance the ride comfort, increase the contact pressure between the tire and the ground, and obtain better passing performance.

[0066] By arranging the stabilizer bar 60 and the shock absorber 1 on different links, it is possible to prevent the stabilizer bar 60 and the shock absorber 1 from interfering with each other, thereby improving the reliability of the active suspension 100 .

[0067] For example, when there are two connecting rods, the active suspension 100 is a double wishbone structure. At this time, the multiple connecting rods only include a first connecting rod 41 and a second connecting rod 42. The first connecting rod 41 is arranged below the second connecting rod 42, so that the shock absorber 1 can have a larger installation space.

[0068] For example, when there are three or more connecting rods, the connecting rod located below the other two connecting rods is the first connecting rod 41, and the connecting rod located in front of the first connecting rod 41 is the second connecting rod 42. Figure 1-Figure 3 When there are five connecting rods, the five connecting rods are a front lower control arm 43, a front upper control arm 44, a rear lower control arm 45, a rear upper control arm 46 and a rear steering tie rod 47;

[0069] The front lower control arm 43 and the front upper control arm 44 are arranged in front of the rear lower control arm 45, the rear upper control arm 46 and the rear steering tie rod 47, and the front lower control arm 43 is arranged below the front upper control arm 44, and the rear lower control arm 45 is arranged below the rear upper control arm 46. In the up-down direction, the rear steering tie rod 47 is arranged at a position between the rear lower control arm 45 and the rear upper control arm 46;

[0070] Among them, the rear lower control arm 45 is the first link 41, the front lower control arm 43 and the front upper control arm 44 can both be the second link 42, and preferably, the two ends of the lateral stabilizer bar 60 are respectively connected to the two front upper control arms 44, so that the space occupied by the subframe 30 and the lateral stabilizer bar 60 in the height direction can be reduced, so that the overall structure of the active suspension 100 is more compact.

[0071] Reference Figure 1-Figure 3According to some embodiments provided by the present disclosure, the lateral stabilizer bar 60 is an active lateral stabilizer bar 60. In this way, the torsional stiffness at both ends of the active lateral stabilizer bar 60 can be actively changed to reduce the roll of the vehicle body and improve the anti-roll performance of the vehicle; the vehicle body roll angular velocity can be actively controlled to reduce the vehicle roll angular velocity caused by road excitation or steering input and enhance ride comfort; and the active lateral stabilizer bar 60 can apply a reverse anti-roll moment to actively increase the suspension travel, increase the contact pressure between the tire and the ground and obtain better passing performance.

[0072] Reference Figure 1 According to some embodiments provided by the present disclosure, the active suspension 100 further includes: two damping springs 50 arranged corresponding to the connecting rod assembly 40, one end of the damping spring 50 is connected to the first connecting rod 41 on the corresponding side, and the other end is used to connect to the vehicle body frame; the active suspension 100 further includes a lateral stabilizer bar 60, and the two ends of the lateral stabilizer bar 60 are respectively connected to the two second connecting rods 42.

[0073] By connecting the shock absorbing spring 50 and the shock absorber 1 to the first connecting rod 41, the degree of freedom of the active suspension 100 can be reduced, the number of parameters that need to be adjusted during the tuning process of the active suspension 100 can be reduced, the tuning time of the active suspension 100 can be shortened, and the R&D cost of the active suspension 100 can be reduced.

[0074] The present application also discloses a vehicle, comprising: the active suspension 100 provided above according to the present disclosure. For example, the vehicle may be a car.

[0075] The vehicle provided by the embodiment of the present disclosure can achieve a change in the ground clearance of the vehicle by setting the active suspension 100 provided by the above disclosure. At the same time, it can still have good vibration reduction performance after the ground clearance changes, thereby improving the comfort of the vehicle. It can also make the vehicle adapt to more driving conditions, improve the applicability of the vehicle, and improve the overall performance of the vehicle.

[0076] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0077] The above description is only a specific embodiment of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An active vibration reduction device, characterized in that: include: A shock absorber, comprising an inner cylinder and an outer cylinder, wherein the inner cylinder is disposed in a first cavity of the outer cylinder, and the inner cylinder has a second cavity; a lifting oil circuit, communicating the first chamber with the second chamber, and being connected in series with a hydraulic pump, the hydraulic pump being used to drive hydraulic oil to flow into the first chamber and to drive hydraulic oil to flow into the second chamber, so as to drive the inner cylinder body to move relative to the outer cylinder body; The bypass oil circuit communicates the first chamber with the second chamber and is connected in series with a solenoid valve, wherein the solenoid valve is used to open and close the bypass oil circuit.

2. The active vibration reduction device according to claim 1, characterized in that: The inner cylinder body is provided with an oil delivery channel, the oil delivery channel is connected to the first chamber and is separated from the second chamber, and the oil delivery channel is connected to the lifting oil circuit.

3. The active vibration reduction device according to claim 2, characterized in that: The first communication port of the oil delivery passage communicating with the first chamber is disposed at one axial end of the inner cylinder body.

4. The active vibration reduction device according to claim 2, characterized in that: An oil inlet connected to the second chamber is provided on the radial outer surface of the inner cylinder body, and a second connecting port connecting the oil delivery channel and the lifting oil circuit is provided on the radial outer surface of the inner cylinder body, and the oil inlet and the second connecting port are both provided at one end of the inner cylinder body away from the outer cylinder body.

5. The active vibration reduction device according to claim 1, characterized in that: The solenoid valve is a CDC solenoid valve and is suitable for adjusting the flow area of ​​the bypass oil passage when the bypass oil passage is opened.

6. An active suspension, characterized in that: include: Subframe; Two connecting rod assemblies, respectively connected to the left and right sides of the sub-frame, and used to connect the steering knuckles on the corresponding sides; Two active vibration reduction devices are arranged corresponding to the connecting rod assembly, and the active vibration reduction device is the active vibration reduction device according to any one of claims 1-5, one end of the shock absorber is connected to the connecting rod assembly on the corresponding side, and the other end is used to connect to the vehicle body frame.

7. The active suspension according to claim 6, characterized in that: The connecting rod assembly includes a plurality of connecting rods, the plurality of connecting rods include a first connecting rod and a second connecting rod, one end of the shock absorber is connected to the first connecting rod on the corresponding side, and the other end is used to connect to the vehicle body frame; The active suspension further includes a lateral stabilizer bar, and two ends of the lateral stabilizer bar are respectively connected to the two second connecting rods.

8. The active suspension according to claim 7, characterized in that: Also includes: Two damping springs are arranged corresponding to the connecting rod assembly, one end of the damping spring is connected to the first connecting rod on the corresponding side, and the other end is used to connect to the vehicle body frame.

9. The active suspension according to claim 7, characterized in that: The lateral stabilizer bar is an active lateral stabilizer bar.

10. A vehicle, characterized in that: include: An active suspension according to any one of claims 6 to 9.

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