Electromagnetic hydraulic mount, control method thereof and vehicle

Abstract

The invention relates to an electromagnetic hydraulic mount, a control method thereof and a vehicle, and belongs to the technical field of vibration isolation devices. The electromagnetic hydraulic suspension comprises a containing structure, a coil assembly, a main spring and an auxiliary spring. The coil assembly is arranged in the containing structure. The main spring is connected with the containing structure, and a first liquid cavity is formed between the main spring and the containing structure. The auxiliary spring is connected with the containing structure, and a second liquid cavity is formed between the auxiliary spring and the containing structure. Two first damping channels and a second damping channel are arranged in the containing structure, the two first damping channels communicate with the second damping channel, and the two first damping channels communicate with the first liquid cavity and the second liquid cavity correspondingly. The two first damping channels are located at the two opposite ends of the coil assembly respectively, and liquid flowing through the first damping channels cuts magnetic induction lines at the corresponding ends of the coil assembly. According to the electromagnetic hydraulic mount, the control method thereof and the vehicle, the vibration excitation attenuation effect can be improved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of vibration isolation devices, in particular to an electromagnetic hydraulic mount, a control method thereof and a vehicle. BACKGROUND

[0002] Magnetorheological medium is a kind of suspension medium composed of micron-sized magnetizable particles dispersed in a base medium, the viscosity and yield stress of which can change with the change of an applied magnetic field, and the change has the characteristics of rapidity, reversibility and controllability. Some electromagnetic hydraulic mounts utilize the characteristics of magnetorheological medium to realize real-time adjustment of the stiffness and damping of the electromagnetic hydraulic mount under the control of an external magnetic field, so as to improve the attenuation effect of the electromagnetic hydraulic mount on vibration excitation in a certain frequency band. However, the electromagnetic hydraulic mount in the related art has the problem of low precision in realizing damping adjustment, which reduces the controllability of damping force and makes the attenuation effect of the electromagnetic hydraulic mount on vibration excitation unsatisfactory. SUMMARY

[0003] In view of this, the embodiments of the present disclosure provide an electromagnetic hydraulic mount, a control method thereof and a vehicle, which can improve the effect of attenuating vibration excitation. The technical solutions are as follows: In a first aspect, an electromagnetic hydraulic mount is provided, which comprises a containing structure, a coil assembly, a main spring and a secondary spring. The coil assembly is arranged inside the containing structure. The main spring is connected to the containing structure and forms a first liquid cavity with the containing structure. The secondary spring is connected to the containing structure and forms a second liquid cavity with the containing structure. Two first damping channels and a second damping channel are arranged in the containing structure, the two first damping channels are in communication with the second damping channel, and the two first damping channels are in communication with the first liquid cavity and the second liquid cavity respectively. The two first damping channels are located at opposite ends of the coil assembly respectively, and the liquid flowing through the first damping channels cuts the magnetic induction lines of the corresponding end of the coil assembly.

[0004] In some possible implementation manners, the containing structure comprises an outer shell, a first partition plate and a second partition plate, the first partition plate and the second partition plate are arranged at intervals in the outer shell to divide the outer shell into a first containing cavity, a second containing cavity and a third containing cavity. The main spring is installed in the first containing cavity, and a first end cover of the main spring is arranged on the first partition plate to form the first liquid cavity together with the first partition plate, and a second end of the main spring is opposite to the first end of the main spring and penetrates out of the outer shell. The secondary spring is installed in the third accommodating cavity, and a first end cover of the secondary spring is arranged on the second partition plate to form the second liquid cavity together with the second partition plate; The coil assembly is installed in the second accommodating cavity, the two first damping channels are respectively located between two ends of the coil assembly and the first partition plate and the second partition plate, and the second damping channel is located between a circumferential side of the coil assembly and the shell; The first partition plate has a first communication hole for communicating the first liquid cavity and the corresponding first damping channel; The second partition plate has a second communication hole for communicating the second liquid cavity and the corresponding first damping channel; Preferably, the shell is made of magnetically isolating material.

[0005] In some possible embodiments, the first partition plate and the second partition plate are both made of magnetically isolating material.

[0006] In some possible embodiments, the coil assembly comprises a coil shell and a coil; The coil shell is installed in the second accommodating cavity; The coil is installed in the coil shell; Preferably, the outer contour of the coil shell is cylindrical, the cylindrical coil shell is coaxial with the coil, the gap between the coil shell and the shell is annular, and the gaps between the coil shell and the first partition plate and the second partition plate are both disc-shaped; Preferably, the first communication hole and the second communication hole are both coaxial with the coil; Preferably, the coil assembly further comprises a magnetic column, which is installed in the coil shell and located inside the coil.

[0007] In some possible embodiments, the main spring comprises, in sequence from inside to outside, a limiting connection part, an annular deformation part, and a first annular connection part; A first end of the limiting connection part is located in the first accommodating cavity, and a second end of the limiting connection part penetrates out of the shell; The annular deformation part and the first annular connection part are both located in the first accommodating cavity and are arranged together with the first end of the limiting connection part on the first partition plate to form the first liquid cavity together with the first partition plate; An outer wall of the first annular connection part is fixedly connected with an inner wall of the shell.

[0008] In some possible embodiments, the shell has a through port for communicating the first accommodating cavity with the outside; The second end of the limiting connection part passes out of the first accommodating cavity through the through port, and the maximum dimension of the first end of the limiting connection part perpendicular to the axis of the through port is greater than the radial dimension of the through port.

[0009] In some possible embodiments, a second end of the auxiliary spring is opposite to the first end of the auxiliary spring and forms an air cavity with the shell. The shell is provided with a gas permeation port for communicating the air cavity with the outside.

[0010] In some possible embodiments, a throttling channel is arranged in the accommodating structure, and a throttle valve is arranged in the throttling channel. Of the first liquid cavity and the second liquid cavity, one is in communication with the first end of the throttling channel, and the other is in communication with the second end of the throttling channel through the corresponding first damping channel. Preferably, when the accommodating structure comprises a first partition plate and a second partition plate, one of the first communication hole of the first partition plate and the second communication hole of the second partition plate is opposite to the first end of the throttling channel, and the other is distributed in a staggered manner with the second end of the throttling channel. Preferably, when the coil assembly comprises a coil shell and a coil, the throttling channel is arranged in the coil shell and located on the inner side of the coil. Preferably, when the coil shell is cylindrical, the throttling channel is coaxial with the cylindrical coil shell, one of the first communication hole and the second communication hole is coaxial with the coil shell, and the other comprises a plurality of holes and is uniformly distributed around the axis of the coil shell. Preferably, the throttle valve is a solenoid valve, the coil shell has a magnetic shielding part, the magnetic shielding part is located on the inner side of the coil, and the throttling channel is arranged in the magnetic shielding part.

[0011] In a second aspect, a control method of an electromagnetic hydraulic suspension is provided, the control method is used for controlling the electromagnetic hydraulic suspension of the second aspect, and the electromagnetic hydraulic suspension further comprises a controller which is in signal connection with the coil assembly and the throttle valve of the electromagnetic hydraulic suspension. The control method comprises the following steps. When the relative amplitude between the accommodating structure and the main spring of the electromagnetic hydraulic suspension is less than a first preset value, the controller sends an opening instruction to the throttle valve and a power-off instruction to the coil assembly. When the relative amplitude between the accommodating structure and the main spring is greater than or equal to the first preset value and less than a second preset value, the controller sends a closing instruction to the throttle valve and a power-off instruction to the coil assembly. When the relative amplitude between the accommodating structure and the main spring is greater than or equal to a second preset value, the controller sends a closing instruction to the throttle valve, the controller sends an energizing instruction to the coil assembly, and the controller controls the size of the energizing current of the coil assembly according to the size of the amplitude.

[0012] In a third aspect, a vehicle is provided, and the vehicle comprises the electromagnetic hydraulic suspension of any one of the first aspect.

[0013] In the scheme shown in the present disclosure, the first liquid cavity, the second liquid cavity, the two first damping channels and the second damping channel can be filled with the magneto-rheological medium, and one of the main spring and the accommodating structure can be connected with the vehicle body and the other can be connected with the vehicle frame. In this way, when the vehicle frame vibrates and relative displacement occurs between the vehicle frame and the vehicle body, the main spring can deform to reduce or increase the volume of the first liquid cavity, and thus the magneto-rheological medium can flow back and forth between the first liquid cavity and the second liquid cavity through the two first damping channels and the second damping channel, so that the volume of the second liquid cavity changes correspondingly to cause the secondary spring to deform. Thus, through the deformation of the main spring and the secondary spring and the flow of the magneto-rheological medium in the two first damping channels and the second damping channel, the vibration excitation can be weakened. At the same time, the coil assembly can generate a magnetic field when energized, and the magneto-rheological medium flowing through the first damping channel can cut the magnetic induction lines to change the damping force when the magneto-rheological medium flows. By adjusting the size of the energizing current in the coil assembly, the change amplitude of the damping force when the magneto-rheological medium flows can be adjusted, so that the vibration excitation can be effectively attenuated in a wide frequency band, meeting the needs of vibration damping of the vehicle in different working conditions. Moreover, since the first damping channel can guide the flow of the magneto-rheological medium, the flow of the magneto-rheological medium in the first damping channel at a certain frequency is relatively regular, so that the flow can be accurately determined, and thus the size of the energizing current in the coil assembly can be controlled in real time to more accurately control the change amplitude of the damping force when the magneto-rheological medium flows, thereby improving the effect of the vehicle body electromagnetic hydraulic suspension on vibration excitation attenuation. Not only can the adjustable range of the damping force be increased and the vibration isolation capacity of the electromagnetic hydraulic suspension be improved, but also the controllability of the damping force is good and the output is stable. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creating any labor.

[0015] Figure 1 is a structural schematic diagram of an electromagnetic hydraulic suspension provided by an embodiment of the present disclosure; Figure 2This is a cross-sectional structural schematic diagram of an electromagnetic hydraulic suspension provided in an embodiment of this disclosure; Figure 3 This is a cross-sectional structural diagram of a shell provided in an embodiment of this disclosure; Figure 4 This is a cross-sectional structural schematic diagram of a coil assembly provided in an embodiment of this disclosure; Figure 5 This is a schematic cross-sectional view of a main spring provided in an embodiment of this disclosure; Figure 6 This is a schematic cross-sectional view of a secondary spring provided in an embodiment of this disclosure; Figure 7 This is a schematic diagram of a structure provided in this disclosure, showing the magnetorheological medium flowing from the first liquid chamber to the second liquid chamber when the throttle valve is opened; Figure 8 This is a schematic diagram of a structure provided in this disclosure, showing the magnetorheological medium flowing from the second liquid chamber to the first liquid chamber when the throttle valve is opened; Figure 9 This is a schematic diagram of a structure provided in this disclosure, showing the magnetorheological medium flowing from the first liquid chamber to the second liquid chamber when the throttle valve is closed; Figure 10 This is a schematic diagram of a structure provided in this disclosure, showing the magnetorheological medium flowing from the second liquid chamber to the first liquid chamber when the throttle valve is closed; Figure 11 This is a schematic diagram of the structure of a first partition plate provided in an embodiment of this disclosure; Figure 12 This is a schematic diagram of the structure of a second partition plate provided in an embodiment of this disclosure; Figure 13 This is a flowchart illustrating a control method for an electromagnetic hydraulic suspension provided in an embodiment of this disclosure.

[0016] Explanation of reference numerals in the attached figures 1. Receiving structure; 11. Outer shell; 111. First receiving cavity; 112. Second receiving cavity; 113. Third receiving cavity; 114. Through port; 115. Vent port; 116. Upper shell; 117. Lower shell; 118. Second connecting lug; 119. Fourth connecting lug; 101. First damping channel; 102. Second damping channel; 103. Throttling channel; 1031. Throttling valve; 104. Injection port; 1041. Sealing plug; 12. First partition plate; 121. First connecting hole; 13. Second partition plate; 131. 2. Second connecting hole; 2. Coil assembly; 21. Coil shell; 211. Magnetic shielding part; 212. Third connecting ear; 22. Coil; 23. Magnetic post; 3. Main spring; 31. Limiting connecting part; 311. Connecting plate; 3111. First connecting ear; 312. Rigid member; 313. Wrapping layer; 314. Reinforcing member; 32. Annular deformation part; 33. First annular connecting part; 4. Secondary spring; 41. Concave deformation part; 42. Second annular connecting part; 5. First liquid cavity; 6. Second liquid cavity; 7. Air cavity; 8. Controller; 9. Isolation layer. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.

[0018] Firstly, this embodiment relates to an electromagnetic hydraulic suspension, as shown in the reference. Figure 1 and Figure 2 As shown, the electromagnetic hydraulic suspension includes a housing structure 1, a coil assembly 2, a main spring 3, and a secondary spring 4.

[0019] refer to Figure 2 As shown, the coil assembly 2 is disposed inside the receiving structure 1. The main spring 3 is connected to the receiving structure 1, and a first liquid cavity 5 is formed between the main spring 3 and the receiving structure 1. The auxiliary spring 4 is connected to the receiving structure 1, and a second liquid cavity 6 is formed between the main spring 4 and the receiving structure 1. Two first damping channels 101 and a second damping channel 102 are provided inside the receiving structure 1. Both first damping channels 101 are connected to the second damping channel 102, and both first damping channels 101 are connected to the first liquid cavity 5 and the second liquid cavity 6, respectively.

[0020] The first liquid cavity 5, the second liquid cavity 6, the two first damping channels 101 and the second damping channel 102 can all be filled with magnetorheological medium. The main spring 3 can deform to reduce or increase the volume of the first liquid cavity 5, thereby allowing the magnetorheological medium to flow back and forth between the first liquid cavity 5 and the second liquid cavity 6 through the two first damping channels 101 and the second damping channel 102, causing the volume of the second liquid cavity 6 to change accordingly and causing the auxiliary spring 4 to deform.

[0021] Combination Figure 3As shown, when the electromagnetic hydraulic suspension is compressed, causing the main spring 3 to deform under pressure, the volume of the first liquid cavity 5 can decrease, and the magnetorheological medium in the first liquid cavity 5 can flow to the second liquid cavity 6, causing the volume of the second liquid cavity 6 to increase, and the auxiliary spring 4 can undergo compressive deformation. When the electromagnetic hydraulic suspension is stretched, causing the main spring 3 to deform under tension, the volume of the first liquid cavity 5 can increase, and the magnetorheological medium in the second liquid cavity 6 can flow to the first liquid cavity 5, causing the volume of the second liquid cavity 6 to decrease, and the auxiliary spring 4 can undergo tensile deformation.

[0022] Therefore, damping force can be output through the deformation of the main spring 3 and the auxiliary spring 4, as well as the flow of the magnetorheological medium in the two first damping channels 101 and the second damping channel 102, thereby weakening the vibration excitation.

[0023] For example, in the main spring 3 and the receiving structure 1, one can be connected to the vehicle body, and the other can be connected to the vehicle frame. When the frame vibrates and there is relative displacement between it and the vehicle body, the electromagnetic hydraulic suspension of this embodiment can weaken the vibration excitation transmitted from the frame to the vehicle body, thereby improving the vehicle's ride comfort.

[0024] Continue to refer to Figure 2 As shown, the two first damping channels 101 are located at opposite ends of the coil assembly 2, and the liquid flowing through the first damping channel 101 cuts the magnetic field lines of the coil assembly 2 at one end.

[0025] In this way, when the coil assembly 2 is energized, it can generate a magnetic field, which can cut the magnetic field lines when the magnetorheological medium flows through the first damping channel 101, thereby changing the damping force when the magnetorheological medium flows. By adjusting the magnitude of the current in the coil assembly 2, the change range of the damping force when the magnetorheological medium flows can be adjusted. Thus, the electromagnetic hydraulic suspension can effectively attenuate vibration excitation in a wide frequency band, meeting the vibration reduction needs of vehicles under different operating conditions.

[0026] Moreover, since the first damping channel 101 can guide the flow of the magnetorheological medium, the flow of the magnetorheological medium in the first damping channel 101 at a certain frequency is more regular, and the flow rate can be determined more accurately. Based on this, the magnitude of the current in the coil assembly 2 can be controlled in real time to more accurately control the change amplitude of the damping force when the magnetorheological medium flows, thereby improving the effect of the vehicle body electromagnetic hydraulic suspension on vibration excitation attenuation. It can not only increase the adjustable range of the damping force and improve the vibration isolation capability of the electromagnetic hydraulic suspension, but also has good controllability of the damping force and stable output.

[0027] For example, the two first damping channels 101 can be located at the N pole and S pole of the magnetic field when the coil assembly 2 is energized, respectively. When the coil assembly 2 is energized, the magnetorheological medium flowing through the two first damping channels 101 can cut the magnetic field lines at the N pole and S pole of the coil assembly 2, respectively.

[0028] In some examples, reference Figure 3 As shown, the housing structure 1 includes a shell 11, a first partition plate 12, and a second partition plate 13.

[0029] Among them, reference Figure 3 and combined Figure 2 As shown, the first partition plate 12 and the second partition plate 13 are arranged at intervals inside the outer casing 11 to divide the outer casing 11 into a first receiving cavity 111, a second receiving cavity 112, and a third receiving cavity 113. For example, the first partition plate 12 and the second partition plate 13 can be fixedly connected to the inner wall of the outer casing 11 by means of bolts, welding, etc.

[0030] refer to Figure 2 and combined Figure 3 As shown, the main spring 3 is installed in the first receiving cavity 111, and the first end of the main spring 3 covers the first partition plate 12 to form a first liquid cavity 5 together with the first partition plate 12. The second end of the main spring 3 is opposite to the first end and extends out of the outer shell 11. When the second end of the main spring 3 is subjected to force, it can cause the first end of the main spring 3 to deform, thereby changing the volume of the first liquid cavity 5.

[0031] For example, the second end of the main spring 3 and the housing 11 can be connected to the vehicle body and the vehicle frame, respectively. Specifically, as shown... Figure 1 As shown, the second end of the main spring 3 may have a connecting plate 311, and the two opposite sides of the peripheral side of the connecting plate 311 may each have a first connecting ear 3111. The connecting plate 311 may be bolted to one of the body and the frame through the first connecting ear 3111. The two opposite sides of the outer wall of the outer shell 11 may each have a second connecting ear 118. The outer shell 11 may be bolted to the other of the body and the frame through the second connecting ear 118.

[0032] Continue to refer to Figure 2 and combined Figure 3 As shown, the auxiliary spring 4 is installed in the third receiving cavity 113, and the first end of the auxiliary spring 4 is covered by the second partition plate 13 to form the second liquid cavity 6 together with the second partition plate 13.

[0033] Continue to refer to Figure 2 and combined Figure 3As shown, the coil assembly 2 is installed within the second receiving cavity 112. Two first damping channels 101 are respectively located between the two ends of the coil assembly 2 and the first partition plate 12 and the second partition plate 13, and a second damping channel 102 is located between the periphery of the coil assembly 2 and the outer shell 11. For example, the two ends of the coil assembly 2 have a first gap between the first partition plate 12 and the second partition plate 13, and the first gap can serve as the first damping channel 101. The periphery of the coil assembly 2 has a second gap between the periphery and the outer shell 11, and the second gap can serve as the second damping channel 102.

[0034] refer to Figure 2 As shown, the first partition plate 12 has a first connecting hole 121 to connect the first liquid cavity 5 with the corresponding first damping channel 101.

[0035] refer to Figure 3 As shown, the second partition plate 13 has a second connecting hole 131 to connect the second liquid cavity 6 with the corresponding first damping channel 101.

[0036] As shown above, the structure of the receiving structure 1 and the forming of the first damping channel 101 and the second damping channel 102 are relatively simple, which can reduce the manufacturing difficulty and manufacturing cost of the electromagnetic hydraulic suspension.

[0037] In some examples, the outer casing 11 is made of a magnetically shielding material, which can reduce the magnetic leakage problem of the coil assembly 2.

[0038] In some examples, both the first partition plate 12 and the second partition plate 13 are made of magnetically shielding material. This can greatly reduce the cutting of magnetic field lines by the irregularly flowing magnetorheological medium in the first liquid cavity 5 and the second liquid cavity 6, thereby improving the accuracy of damping force control and the stability of damping force output.

[0039] In some examples, reference Figure 4 As shown, the coil assembly 2 includes a coil housing 21 and a coil 22. (Referring to...) Figure 2 and combined Figure 3 As shown, the coil housing 21 is installed in the second receiving cavity 112.

[0040] For example, the coil housing 21 can be fixedly connected to the outer casing 11 by means of bolts, welding, etc. Specifically, such as Figure 4 As shown, the circumference of the coil housing 21 may have a third connecting lug 212, such as Figure 3 As shown, the inner wall of the outer casing 11 may have a fourth connecting lug 119. The third connecting lug 212 and the fourth connecting lug 119 can be connected by bolts, thereby realizing a fixed connection between the coil shell 21 and the outer casing 11.

[0041] Continue to refer to Figure 4As shown, the coil 22 is installed inside the coil housing 21. For example, the coil 22 can be fixedly installed inside the coil housing 21 by means of adhesive, snap-fit, or other methods.

[0042] In this way, the coil shell 21 can prevent the magnetorheological medium from entering the coil 22 and affecting the normal operation of the coil 22, and at the same time, it can also guide the flow of the magnetorheological medium.

[0043] In some examples, the coil housing 21 and the third connecting lug 212 can be integrally formed, which can reduce the number of parts and reduce assembly complexity.

[0044] In some examples, the outer contour of the coil housing 21 is cylindrical. (See reference) Figure 2 and combined Figure 4 As shown, the cylindrical coil shell 21 is coaxial with the coil 22. The gap between the coil shell 21 and the outer shell 11 is annular, and the gaps between the coil shell 21 and the first partition plate 12 and the second partition plate 13 are both disc-shaped.

[0045] In this way, the magnetorheological medium can cut the magnetic field lines relatively uniformly within the first damping channel 101, resulting in a more uniform force on the electromagnetic suspension and improving its stability. Simultaneously, the flow direction of the magnetorheological medium can be nearly perpendicular to or perpendicular to the direction of the magnetic field lines, which helps to increase the effective area of ​​the magnetorheological medium cutting the magnetic field lines, improving the output efficiency of the damping force of the electromagnetic suspension. This allows for the output of a larger damping force with a smaller current flowing through the coil 22.

[0046] In some examples, both the first connecting hole 121 and the second connecting hole 131 are coaxial with the coil 22. In this way, the magnetorheological medium can cut the magnetic field lines more uniformly within the first damping channel 101, resulting in a more uniform force on the electromagnetic suspension and further improving the stability of the electromagnetic suspension.

[0047] In some examples, reference Figure 4 As shown, the coil assembly 2 also includes a magnetic post 23, which is installed inside the coil housing 21 and located inside the coil 22. For example, the magnetic post 23 can be fixedly installed inside the coil housing 21 by means of adhesive, snap-fit, etc., and the coil 22 can be wound around the periphery of the magnetic post 23.

[0048] In this way, the magnetic column 23 can enhance the magnetic field strength of the coil 22, improve the output efficiency of the electromagnetic hydraulic suspension damping force, and output a large damping force with a small current passing through the coil 22.

[0049] In some examples, reference Figure 5 As shown, the main spring 3 includes a limiting connection part 31, an annular deformation part 32 and a first annular connection part 33 connected sequentially from the inside to the outside.

[0050] refer to Figure 2 and combined Figure 5 As shown, the first end of the limiting connection portion 31 is located inside the first receiving cavity 111, and the second end of the limiting connection portion 31 extends out of the outer shell 11. For example, the connecting plate 311 can be connected to the second end of the limiting connection portion 31.

[0051] Continue to refer to Figure 2 and combined Figure 5 As shown, the annular deformation part 32 and the first annular connecting part 33 are both located in the first receiving cavity 111, and together with the first end of the limiting connecting part 31, they cover the first partition plate 12 to form the first liquid cavity 5.

[0052] Continue to refer to Figure 2 and combined Figure 5 As shown, the outer wall of the first annular connecting portion 33 is fixedly connected to the inner wall of the outer casing 11. For example, the outer wall of the first annular connecting portion 33 is vulcanized together with the inner wall of the outer casing 11.

[0053] Thus, the outer wall of the first annular connecting part 33 is fixedly connected to the inner wall of the outer shell 11, which can improve the stability of the connection between the main spring 3 and the outer shell 11 and help prevent the main spring 3 from separating from the outer shell 11.

[0054] In some examples, reference Figure 3 As shown, the outer casing 11 has a through-hole 114, which is used to connect the first receiving cavity 111 with the outside.

[0055] Combination Figure 2 and Figure 5 As shown, the second end of the limiting connection part 31 passes through the opening 114 and exits the first receiving cavity 111. The maximum dimension of the first end of the limiting connection part 31 perpendicular to the axis of the opening 114 is greater than the radial dimension of the opening 114.

[0056] In this way, the first end of the limiting connection 31 cannot pass through the opening 114, thereby preventing the main spring 3 from detaching from the housing 11 or causing the connection between the first annular connection 33 and the housing 11 to fail when the amplitude is too large. Thus, it can play the role of overload protection and improve the service life of the electromagnetic hydraulic suspension.

[0057] In some examples, reference Figure 5 As shown, the limiting connection portion 31 may include a rigid member 312 and a wrapping layer 313. The wrapping layer 313 may at least wrap around the first end of the rigid member 312 and may be connected to the annular deformation portion 32. Figure 5 As shown, the first end of the rigid member 312 can be located inside the first receiving cavity 11, and the second end of the rigid member 312 can pass through the first receiving cavity 11 via the through-hole 114.

[0058] For example, rigid component 312 can be made of rigid metal. Figure 2 and combined Figure 5 As shown, the second end of the rigid member 312 is fixedly connected to the connecting plate 311 by bolts, welding, or other means. The wrapping layer 313 can be made of rubber, and the wrapping layer 313 and the rigid member 312 can be vulcanized together.

[0059] Thus, the limiting connection 31 can effectively prevent the main spring 3 from detaching from the outer shell 11. Furthermore, since the wrapping layer 313 is wrapped around the first end of the rigid member 312, the impact between the first end of the limiting connection 31 and the outer shell 11 can be buffered to a certain extent, which helps to prevent the rigid member 312 from being damaged by direct impact with the outer shell 11 and reduces the noise emitted.

[0060] In some examples, the wrapping layer 313 may extend from the first end of the rigid member 312 to the second end of the rigid member 312, thereby preventing direct friction that may occur between the rigid member 312 and the housing 11, which helps to reduce noise.

[0061] In some examples, the wrapping layer 313, the annular deformation portion 32, and the first annular connecting portion 33 can be integrally molded rubber materials. This can improve the reliability of the connection between the limiting connecting portion 31 and the annular deformation portion 32 and the first annular connecting portion 33.

[0062] In some examples, reference Figure 2 As shown, the second end of the auxiliary spring 4 is opposite to the first end of the auxiliary spring 4 and forms an air cavity 7 between itself and the outer casing 11. When the volume of the second liquid cavity 6 changes, the first end of the auxiliary spring 4 can be subjected to force, causing the second end of the auxiliary spring 4 to deform, thus changing the volume of the air cavity 7. For example, when the volume of the second liquid cavity 6 increases, the volume of the air cavity 7 can decrease. When the volume of the second liquid cavity 6 decreases, the volume of the air cavity 7 can increase.

[0063] Continue to refer to Figure 2 As shown, the outer casing 11 is provided with a vent 115, which connects the air chamber 7 to the outside. During the process of the air chamber 7 decreasing in volume, the gas inside the air chamber 7 can be discharged to the outside through the vent 115, providing a certain damping force to the deformation of the auxiliary spring 4. During the process of the air chamber 7 increasing in volume, outside gas can be drawn into the air chamber 7 through the vent 115, providing a certain damping force to the deformation of the auxiliary spring 4.

[0064] Thus, the air chamber 7 can increase the damping force of the electromagnetic hydraulic suspension, playing a role in assisting in attenuating vibration excitation. The vent 115 can prevent the auxiliary spring 4 from being unable to deform, which would lead to excessive stiffness of the electromagnetic hydraulic suspension.

[0065] In some examples, referenceFigure 6 As shown, the auxiliary spring 4 may include a concave deformation portion 41 and a second annular connecting portion 42 connected together. The concave deformation portion 41 may be recessed toward the second liquid cavity 6. The second annular connecting portion 42 surrounds the concave deformation portion 41, and the outer wall of the second annular connecting portion 42 is connected to the inner wall of the outer casing 11.

[0066] For example, the concave deformation portion 41 and the second annular connecting portion 42 can be integrally molded rubber structures, and the outer wall of the second annular connecting portion 42 and the inner wall of the outer shell 11 can be vulcanized together.

[0067] This improves the stability of the connection between the auxiliary spring 4 and the outer shell 11.

[0068] In some examples, an isolation layer 9 is provided on the surface of the main spring 3 facing the first liquid cavity 5 and the surface of the auxiliary spring 4 facing the second liquid cavity 6 to prevent the main spring 3 and the auxiliary spring 4 from directly contacting the magnetorheological medium and reacting. The isolation layer 9 can be an isolation coating or an isolation film bonded to the corresponding surface.

[0069] In some examples, the electromagnetic hydraulic suspension is provided with a fluid inlet 104, and a sealing plug 1041 is sealed inside the fluid inlet 104. The fluid inlet 104 is used to connect the outside to the first fluid chamber 5 or the second fluid chamber 6. For example, in Figure 2 and Figure 5 In this embodiment, the injection port 104 can be a through hole penetrating the outer shell 11 and the first annular connecting portion 33. However, in other possible examples, the injection port 104 can be a through hole penetrating the outer shell 11 and the second annular connecting portion 42. In this way, the magnetorheological medium can be injected into the first liquid cavity 5 and the second liquid cavity 6, the two first damping channels 101 and the second damping channel 102 through the injection port 104.

[0070] In some examples, reference Figure 3 As shown, the outer casing 11 may include an upper casing 116 and a lower casing 117. The upper casing 116 and the lower casing 117 together form the outer casing 11, and the upper casing 116 and the lower casing 117 can be fixedly connected together by welding, bolts, or other means. This facilitates the assembly of the electromagnetic hydraulic suspension.

[0071] In some examples, reference Figure 3 As shown, the second connecting ear 118 and the fourth connecting ear 119 can be connected to the upper housing 116. For example, the second connecting ear 118 and the fourth connecting ear 119 can be integrally formed when connected to the upper housing 116.

[0072] In some examples, reference Figure 3 As shown, the vent 114 is located on the top wall of the upper housing 116. The vent 115 is located on the bottom wall of the lower housing 117.

[0073] In some examples, reference Figure 3 As shown, the first partition plate 12 and the second partition plate 13 are distributed vertically and horizontally within the upper housing 116. The first receiving cavity 111 is located between the top wall of the upper housing 116 and the first partition plate 12, the second receiving cavity 112 is located between the first partition plate 12 and the second partition plate 13, and the third receiving cavity 113 is located between the second partition plate 13 and the bottom wall of the lower housing 117.

[0074] In some examples, reference Figure 4 As shown, a throttling channel 103 is provided inside the accommodating structure 1, and a throttling valve 1031 is provided inside the throttling channel 103.

[0075] Among them, one of the first liquid chamber 5 and the second liquid chamber 6 is connected to the first end of the throttling channel 103, and the other is connected to the second end of the throttling channel 103 through the corresponding first damping channel 101.

[0076] For example, in Figure 2 In one embodiment, the first liquid chamber 5 is directly connected to the first end of the throttling channel 103, and the second liquid chamber 6 is connected to the second end of the throttling channel 103 through a corresponding first damping channel 101. However, in other possible examples, the second liquid chamber 6 is also directly connected to the first end of the throttling channel 103, and the first liquid chamber 5 is connected to the second end of the throttling channel 103 through a corresponding first damping channel 101.

[0077] Thus, when the throttle valve 1031 is open, the magnetorheological medium can flow between the first liquid chamber 5 and the second liquid chamber 6 via the throttle channel 103. Furthermore, in the first liquid chamber 5 and the second liquid chamber 6, one is connected to the first end of the throttle channel 103, which can reduce the damping force of the electromagnetic suspension when the throttle valve 1031 is open; the other is connected to the second end of the throttle channel 103 via the corresponding first damping channel 101, which can prevent insufficient output of the damping force of the electromagnetic suspension when the throttle valve 1031 is open.

[0078] Therefore, with the throttle valve 1031 open, the flow rate of the magnetorheological medium between the first liquid chamber 5 and the second liquid chamber 6 can be relatively large. This allows for a suitable reduction in the damping force of the electromagnetic hydraulic mount, which helps to mitigate the dynamic hardening phenomenon under high-frequency, low-amplitude conditions and improves its high-frequency vibration isolation performance. With the throttle valve 1031 closed, the damping force of the electromagnetic hydraulic mount can be increased, and this force can be adjusted by regulating the current flowing through the control coil assembly 2. This broadens the vibration isolation frequency range of the electromagnetic hydraulic mount.

[0079] In some examples, when the housing structure 1 includes a first partition plate 12 and a second partition plate 13, one of the first connecting holes 121 of the first partition plate 12 and the second connecting holes 131 of the second partition plate 13 are directly opposite to the first end of the throttling channel 103, and the other is offset from the second end of the throttling channel 103.

[0080] For example, in Figure 2 In this configuration, the first connecting hole 121 is directly opposite to the first end of the throttling channel 103, so that the first liquid chamber 5 is directly connected to the first end of the throttling channel 103. The second connecting hole 131 is offset from the second end of the throttling channel 103, so that the second liquid chamber 6 is connected to the second end of the throttling channel 103 through the corresponding first damping channel 101.

[0081] However, in other possible examples, the second connecting hole 131 may be directly opposite the first end of the throttling channel 103, so that the second liquid chamber 6 is directly connected to the first end of the throttling channel 103. The first connecting hole 121 may be offset from the second end of the throttling channel 103, so that the first liquid chamber 5 is connected to the second end of the throttling channel 103 through the corresponding first damping channel 101.

[0082] In this embodiment, Figure 2 The first connecting hole 121 is directly opposite to the first end of the throttling channel 103, and the second connecting hole 131 is offset from the second end of the throttling channel 103, as shown in the example.

[0083] When the throttle valve 1031 is open, combined with Figure 7 As shown, when the volume of the first liquid chamber 5 decreases, the magnetorheological medium can flow from the first liquid chamber 5 through the first connecting hole 121 into the first first damping channel 101 and the throttling channel 103. The flow into the first first damping channel 101 can, after passing through the second damping channel 102, merge with the flow into the throttling channel 103 into the second first damping channel 101, and then enter the second liquid chamber 6 through the second connecting hole 131. Figure 8 As shown, when the volume of the first liquid chamber 5 increases, the magnetorheological medium can flow from the second liquid chamber 6 into the second first damping channel 101 via the second connecting hole 131, and then be diverted into the throttling channel 103 and the second damping channel 102. The diverted flow into the second damping channel 102 can merge with the diverted flow into the throttling channel 103 after passing through the first first damping channel 101, and then enter the first liquid chamber 5 via the first connecting hole 121.

[0084] When the throttle valve 1031 is closed, combined with Figure 9As shown, when the volume of the first liquid cavity 5 decreases, the magnetorheological medium can enter the second liquid cavity 6 from the first liquid cavity 5 sequentially through the first connecting hole 121, the first first damping channel 101, the second damping channel 102, the second first damping channel 101, and the second connecting hole 131. Combined with... Figure 10 As shown, when the volume of the first liquid cavity 5 increases, the magnetorheological medium can enter the first liquid cavity 5 from the second liquid cavity 6 sequentially through the second connecting hole 131, the second first damping channel 101, the second damping channel 102, the first first damping channel 101 and the first connecting hole 121.

[0085] In some examples, reference Figure 4 As shown, when the coil assembly 2 includes a coil housing 21 and a coil 22, the throttling channel 103 is disposed in the coil housing 21, located inside the coil 22. For example, the throttling channel 103 can be a through hole penetrating the center of the coil housing 21. When the coil assembly 2 also includes a magnetic post 23, the magnetic post 23 can be annular and can surround the throttling channel 103. This helps save space occupied by the throttling channel 103, reduces the volume of the electromagnetic suspension, and improves the integration of the electromagnetic suspension.

[0086] In some examples, when the coil housing 21 is cylindrical, such as Figure 2 As shown, the throttling channel 103 is coaxial with the cylindrical coil shell 21. Of the first connecting hole 121 and the second connecting hole 131, one is coaxial with the coil shell 21, and the other comprises multiple holes evenly spaced around the axis of the coil shell 21.

[0087] For example, refer to Figure 2 and combined Figure 11 and Figure 12 As shown, the first connecting hole 121 may be coaxial with the coil shell 21, and the second connecting holes 131 may include multiple holes evenly spaced around the axis of the coil shell 21. The number of the second connecting holes 131 can be... Figure 12 The six shown could also be three, four, five, or seven, etc.

[0088] However, in other possible examples, the second connecting hole 131 may be coaxial with the coil shell 21, and the first connecting hole 121 may include multiple holes evenly spaced around the axis of the coil shell 21. The number of first connecting holes 121 may be six, three, four, five, or seven, etc.

[0089] This will help to further improve the uniformity of the magnetorheological medium cutting magnetic field lines, improve the stress condition of the electromagnetic hydraulic suspension, and enhance the stability and service life of the electromagnetic hydraulic suspension.

[0090] In some examples, the throttle valve 1031 is a solenoid valve, see reference. Figure 4As shown, the coil housing 21 has a magnetic shielding part 211 located inside the coil 22, and a throttling channel 103 is disposed in the magnetic shielding part 211. For example, the throttling channel 103 can be a through hole penetrating the center of the magnetic shielding part 211. When the coil assembly 2 also includes an annular magnetic post 13, the annular magnetic post 13 can surround the magnetic shielding part 211. Thus, due to the fast response speed of the solenoid valve, the accuracy of the throttling valve 103 control is improved. The magnetic shielding part 211 prevents the magnetic fields between the solenoid valve and the coil 22 from interfering with each other and affecting normal operation.

[0091] In this embodiment, the first liquid cavity 5, the second liquid cavity 6, the two first damping channels 101, and the second damping channel 102 can all be filled with magnetorheological medium. Of the main spring 3 and the receiving structure 1, one can be connected to the vehicle body, and the other can be connected to the vehicle frame. Thus, when the vehicle frame vibrates and a relative displacement occurs between it and the vehicle body, the main spring 3 can deform, causing the volume of the first liquid cavity 5 to decrease or increase. This allows the magnetorheological medium to flow back and forth between the first liquid cavity 5 and the second liquid cavity 6 through the two first damping channels 101 and the second damping channel 102, causing a corresponding change in the volume of the second liquid cavity 6 and resulting in deformation of the auxiliary spring 4. Therefore, through the deformation of the main spring 3 and the auxiliary spring 4, and the flow of the magnetorheological medium within the two first damping channels 101 and the second damping channel 102, the vibration excitation can be weakened. Simultaneously, when the coil assembly 2 is energized, it generates a magnetic field. When the magnetorheological medium flows through the first damping channel 101, it cuts the magnetic field lines, thus changing the damping force of the magnetorheological medium. By adjusting the magnitude of the current flowing through the coil assembly 2, the variation range of the damping force during the flow of the magnetorheological medium can be adjusted, thereby achieving effective attenuation of vibration excitation over a wide frequency band and meeting the vibration reduction needs of vehicles under different operating conditions. Moreover, since the first damping channel 101 can guide the flow of the magnetorheological medium, the flow of the magnetorheological medium within the first damping channel 101 is relatively regular at a certain frequency, and the flow rate can be determined more accurately. Based on this, the magnitude of the current flowing through the coil assembly 2 can be controlled in real time to more precisely control the variation range of the damping force during the flow of the magnetorheological medium, thereby improving the vibration excitation attenuation effect of the vehicle body electromagnetic hydraulic suspension. This not only increases the adjustable range of the damping force and improves the vibration isolation capability of the electromagnetic hydraulic suspension, but also provides good controllability and stable output of the damping force.

[0092] Secondly, this disclosure also provides a control method for an electromagnetic hydraulic mount, which is used to control the electromagnetic hydraulic mount of the first aspect. The electromagnetic hydraulic mount further includes a controller 8, which is signal-connected to both the coil assembly 2 and the throttle valve 1031 of the electromagnetic hydraulic mount. (Reference) Figure 13 As shown, the control methods include: When the relative amplitude between the housing structure 1 of the electromagnetic hydraulic suspension and the main spring 3 is less than the first preset value, the controller 8 sends an opening command to the throttle valve 1031 and a power-off command to the coil assembly 2.

[0093] When the relative amplitude between the housing structure 1 and the main spring 3 is greater than or equal to the first preset value and less than the second preset value, the controller 8 sends a closing command to the throttle valve 1031 and a power-off command to the coil assembly 2.

[0094] When the relative amplitude between the housing structure 1 and the main spring 3 is greater than or equal to the second preset value, the controller 8 sends a closing command to the throttle valve 1031, the controller 8 sends a power-on command to the coil assembly 2, and controls the magnitude of the current supplied to the coil assembly 2 according to the magnitude of the amplitude.

[0095] In the embodiments of this disclosure, the control method can broaden the frequency range of electromagnetic hydraulic suspension vibration isolation and achieve effective attenuation of vibration excitation in a wider frequency band, thereby meeting the vibration reduction needs of vehicles under different operating conditions.

[0096] Thirdly, a vehicle is provided, the vehicle including any of the electromagnetic hydraulic suspensions of the first aspect.

[0097] In this embodiment, the first liquid cavity 5, the second liquid cavity 6, the two first damping channels 101, and the second damping channel 102 can all be filled with magnetorheological medium. Of the main spring 3 and the receiving structure 1, one can be connected to the vehicle body, and the other can be connected to the vehicle frame. Thus, when the vehicle frame vibrates and a relative displacement occurs between it and the vehicle body, the main spring 3 can deform, causing the volume of the first liquid cavity 5 to decrease or increase. This allows the magnetorheological medium to flow back and forth between the first liquid cavity 5 and the second liquid cavity 6 through the two first damping channels 101 and the second damping channel 102, causing a corresponding change in the volume of the second liquid cavity 6 and resulting in deformation of the auxiliary spring 4. Therefore, through the deformation of the main spring 3 and the auxiliary spring 4, and the flow of the magnetorheological medium within the two first damping channels 101 and the second damping channel 102, the vibration excitation can be weakened. Simultaneously, when the coil assembly 2 is energized, it generates a magnetic field. When the magnetorheological medium flows through the first damping channel 101, it cuts the magnetic field lines, thus changing the damping force of the magnetorheological medium. By adjusting the magnitude of the current flowing through the coil assembly 2, the variation range of the damping force during the flow of the magnetorheological medium can be adjusted, thereby achieving effective attenuation of vibration excitation over a wide frequency band and meeting the vibration reduction needs of vehicles under different operating conditions. Moreover, since the first damping channel 101 can guide the flow of the magnetorheological medium, the flow of the magnetorheological medium within the first damping channel 101 is relatively regular at a certain frequency, and the flow rate can be determined more accurately. Based on this, the magnitude of the current flowing through the coil assembly 2 can be controlled in real time to more precisely control the variation range of the damping force during the flow of the magnetorheological medium, thereby improving the vibration excitation attenuation effect of the vehicle body electromagnetic hydraulic suspension. This not only increases the adjustable range of the damping force and improves the vibration isolation capability of the electromagnetic hydraulic suspension, but also provides good controllability and stable output of the damping force.

[0098] It should be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0099] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0100] In the description of this specification, the references to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" refer to specific features, structures, materials, or characteristics described in connection with the embodiments or examples that are included in at least one embodiment or example of this application.

[0101] The above are merely embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this application should be included within the protection scope of this application.

Claims

1. An electromagnetic hydraulic suspension, characterized in that, The electromagnetic hydraulic suspension includes a housing structure (1), a coil assembly (2), a main spring (3), and a secondary spring (4). The coil assembly (2) is disposed inside the housing structure (1); The main spring (3) is connected to the receiving structure (1) and forms a first liquid cavity (5) between the main spring (3) and the receiving structure (1). The auxiliary spring (4) is connected to the receiving structure (1) and forms a second liquid cavity (6) between the spring and the receiving structure (1). The accommodating structure (1) is provided with two first damping channels (101) and a second damping channel (102). Both first damping channels (101) are connected to the second damping channel (102), and the two first damping channels (101) are connected to the first liquid cavity (5) and the second liquid cavity (6) respectively. Two first damping channels (101) are located at opposite ends of the coil assembly (2), and the liquid flowing through the first damping channel (101) cuts the magnetic field lines at the corresponding end of the coil assembly (2).

2. The electromagnetic hydraulic suspension according to claim 1, characterized in that, The housing structure (1) includes a shell (11), a first partition plate (12) and a second partition plate (13). The first partition plate (12) and the second partition plate (13) are arranged at intervals inside the shell (11) to divide the shell (11) into a first housing cavity (111), a second housing cavity (112) and a third housing cavity (113). The main spring (3) is installed in the first receiving cavity (111), and the first end of the main spring (3) is covered by the first partition plate (12) to form the first liquid cavity (5) together with the first partition plate (12). The second end of the main spring (3) is opposite to the first end of the main spring (3) and extends out of the outer shell (11). The auxiliary spring (4) is installed in the third receiving cavity (113), and the first end of the auxiliary spring (4) is covered on the second partition plate (13) to form the second liquid cavity (6) together with the second partition plate (13). The coil assembly (2) is installed in the second receiving cavity (112), the two first damping channels (101) are respectively located between the two ends of the coil assembly (2) and the first partition plate (12) and the second partition plate (13), and the second damping channel (102) is located between the periphery of the coil assembly (2) and the outer shell (11); The first partition plate (12) has a first connecting hole (121) to connect the first liquid cavity (5) with the corresponding first damping channel (101). The second partition plate (13) has a second connecting hole (131) to connect the second liquid cavity (6) with the corresponding first damping channel (101). Preferably, the outer shell (11) is made of a magnetically shielding material.

3. The electromagnetic hydraulic suspension according to claim 2, characterized in that, Both the first partition plate (12) and the second partition plate (13) are made of magnetic shielding material.

4. The electromagnetic hydraulic suspension according to claim 2, characterized in that, The coil assembly (2) includes a coil housing (21) and a coil (22); The coil housing (21) is installed in the second receiving cavity (112); The coil (22) is installed inside the coil housing (21); Preferably, the outer contour of the coil shell (21) is cylindrical, the cylindrical coil shell (21) is coaxial with the coil (22), the gap between the coil shell (21) and the outer shell (11) is annular, and the gap between the coil shell (21) and the first partition plate (12) and the second partition plate (13) is disc-shaped; Preferably, both the first connecting hole (121) and the second connecting hole (131) are coaxial with the coil (22); Preferably, the coil assembly (2) further includes a magnetic post (23), which is installed inside the coil housing (21) and located inside the coil (22).

5. The electromagnetic hydraulic suspension according to claim 2, characterized in that, The main spring (3) includes a limiting connection part (31), an annular deformation part (32) and a first annular connection part (33) connected sequentially from the inside to the outside. The first end of the limiting connection part (31) is located inside the first receiving cavity (111), and the second end of the limiting connection part (31) extends out of the outer shell (11). The annular deformation part (32) and the first annular connecting part (33) are both located in the first receiving cavity (111), and together with the first end of the limiting connecting part (31), they cover the first partition plate (12) to form the first liquid cavity (5) together with the first partition plate (12). The outer wall of the first annular connecting part (33) is fixedly connected to the inner wall of the outer shell (11).

6. The electromagnetic hydraulic suspension according to claim 5, characterized in that, The outer shell (11) has a through-hole (114) for connecting the first receiving cavity (111) with the outside; The second end of the limiting connection part (31) extends out of the first receiving cavity (111) through the through-hole (114), and the maximum dimension of the first end of the limiting connection part (31) perpendicular to the axis of the through-hole (114) is greater than the radial dimension of the through-hole (114).

7. The electromagnetic hydraulic suspension according to claim 2, characterized in that, The second end of the auxiliary spring (4) is opposite to the first end of the auxiliary spring (4) and forms an air cavity (7) between it and the outer shell (11). The outer shell (11) is provided with a vent (115) for connecting the air chamber (7) to the outside.

8. The electromagnetic hydraulic suspension according to any one of claims 1 to 7, characterized in that, The accommodating structure (1) is provided with a throttling channel (103), and a throttling valve (1031) is provided in the throttling channel (103). In the first liquid chamber (5) and the second liquid chamber (6), one is connected to the first end of the throttling channel (103), and the other is connected to the second end of the throttling channel (103) through the corresponding first damping channel (101); Preferably, when the receiving structure (1) includes a first partition plate (12) and a second partition plate (13), one of the first connecting hole (121) of the first partition plate (12) and the second connecting hole (131) of the second partition plate (13) is directly opposite to the first end of the throttling channel (103), and the other is offset from the second end of the throttling channel (103). Preferably, when the coil assembly (2) includes a coil housing (21) and a coil (22), the throttling channel (103) is disposed in the coil housing (21) and located inside the coil (22); Preferably, when the coil shell (21) is cylindrical, the throttling channel (103) is coaxial with the cylindrical coil shell (21), and one of the first connecting hole (121) and the second connecting hole (131) is coaxial with the coil shell (21), while the other includes multiple holes that are evenly spaced around the axis of the coil shell (21). Preferably, the throttle valve (1031) is a solenoid valve, the coil housing (21) has a magnetic shielding part (211), the magnetic shielding part (211) is located inside the coil (22), and the throttle channel (103) is disposed in the magnetic shielding part (211).

9. A control method for an electromagnetic hydraulic suspension, characterized in that, The control method is used to control the electromagnetic hydraulic suspension according to claim 8, and the electromagnetic hydraulic suspension further includes a controller (8), which is signal connected to the coil assembly (2) and the throttle valve (1031) of the electromagnetic hydraulic suspension; The control method includes: When the relative amplitude between the receiving structure (1) of the electromagnetic hydraulic suspension and the main spring (3) is less than the first preset value, the controller (8) sends an opening command to the throttle valve (1031) and a power-off command to the coil assembly (2); When the relative amplitude between the receiving structure (1) and the main spring (3) is greater than or equal to the first preset value and less than the second preset value, the controller (8) sends a closing command to the throttle valve (1031) and a power-off command to the coil assembly (2); When the relative amplitude between the receiving structure (1) and the main spring (3) is greater than or equal to the second preset value, the controller (8) sends a closing command to the throttle valve (1031), the controller (8) sends a power-on command to the coil assembly (2), and controls the magnitude of the current supplied to the coil assembly (2) according to the magnitude of the amplitude.

10. A vehicle, characterized in that, The vehicle includes the electromagnetic hydraulic suspension as described in any one of claims 1 to 8.

Images