Electromagnetic suspension and vehicle

Abstract

The present invention discloses an electromagnetic suspension and a vehicle. The electromagnetic suspension includes a linear motor unit and an elastic unit. The linear motor unit includes a stator assembly and a mover assembly. One of the stator assembly and the mover assembly is suitable for connecting to a vehicle body and the other is suitable for connecting to a wheel. The stator assembly includes a plurality of stators. The mover assembly includes a plurality of movers. The number of movers is the same as the number of stators and corresponds one to one. Each pair of stators and movers constitutes a sub-linear motor. At least part of the stators are independently controlled. The elastic unit is connected to the linear motor unit. According to the electromagnetic suspension of an embodiment of the present invention, by providing a plurality of stators and a plurality of movers and each pair of stators and movers constitutes a sub-linear motor, the linear motor unit can have a plurality of sub-linear motors, which can increase the overall thrust of the linear motor unit and expand the thrust range, thereby improving the vibration reduction effect of the electromagnetic suspension on the vehicle and improving the stability of the vehicle.

Description

Technical Field

[0001] The present invention relates to the field of vehicles, and in particular to an electromagnetic suspension and a vehicle. Background Art

[0002] The electromagnetic suspension is installed between the vehicle body and wheels, and attenuates the vibration of the vehicle body through the thrust generated by the motor. In the related art, the overall thrust of the linear motor unit is too small and the thrust range is small, so that the overall vibration reduction effect of the electromagnetic suspension is poor, which is not conducive to ensuring the stability of the vehicle during driving. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present invention is to provide an electromagnetic suspension, by providing a plurality of stators and a plurality of movers, and each pair of stators and movers constitutes a sub-linear motor, so that the linear motor unit can have a plurality of sub-linear motors, and the plurality of sub-linear motors can increase the thrust of the linear motor unit as a whole, expand the thrust range of the linear motor as a whole, thereby improving the vibration reduction effect of the electromagnetic suspension on the vehicle and improving the stability of the vehicle.

[0004] The present invention also provides a vehicle having the electromagnetic suspension.

[0005] The electromagnetic suspension according to the first aspect of the present invention comprises: a linear motor unit, the linear motor unit comprising a stator assembly and a mover assembly, one of the stator assembly and the mover assembly being suitable for connection to a vehicle body and the other being suitable for connection to a wheel, the stator assembly comprising a plurality of stators, the mover assembly comprising a plurality of movers, the number of the movers being the same as the number of the stators and corresponding one to one, each pair of the stators and the movers constituting a sub-linear motor, and at least part of the stators being independently controlled; and an elastic unit connected to the linear motor unit.

[0006] According to the electromagnetic suspension of the embodiment of the present invention, by setting multiple stators and multiple movers and each pair of stators and movers constituting a sub-linear motor, the linear motor unit can have multiple sub-linear motors. The multiple sub-linear motors can increase the overall thrust of the linear motor unit and expand the overall thrust range of the linear motor, thereby improving the vibration reduction effect of the electromagnetic suspension on the vehicle and improving the stability of the vehicle.

[0007] According to some embodiments of the invention, each of the stators is independently controlled.

[0008] According to some embodiments of the present invention, the sub-linear motor is in the shape of a flat plate.

[0009] According to some embodiments of the present invention, the stator assembly includes a shell and a plurality of stators, the stator and the mover are both disposed in the shell, the stator is connected to the shell, the axial direction of the shell extends in the up and down directions, and the plurality of sub-linear motors are arranged along the circumference of the shell.

[0010] According to some embodiments of the present invention, a plurality of the sub-linear motors are arranged in a polygonal shape.

[0011] According to some embodiments of the present invention, there are three sub-linear motors, and the three sub-linear motors are arranged in a triangle.

[0012] According to some embodiments of the present invention, the stator is in the shape of a flat plate; and / or the mover is in the shape of a flat plate.

[0013] According to some embodiments of the present invention, the stator of the sub-linear motor is arranged parallel to and opposite to the corresponding mover.

[0014] According to some embodiments of the present invention, the mover assembly further includes: a mounting member, a plurality of the movers are disposed on the mounting member, and the mounting member is suitable for being connected to the wheel.

[0015] According to some embodiments of the present invention, a plurality of movers are arranged along the circumference of the mounting member.

[0016] According to some embodiments of the present invention, the outer peripheral surface of the mounting member has a plurality of mounting surfaces arranged along the circumference of the mounting member, the mounting surfaces are planes, the number of the mounting surfaces is the same as the number of the movers and corresponds one to one, and the movers are mounted and fixed on the corresponding mounting surfaces.

[0017] According to some embodiments of the present invention, there are three movers, there are three mounting surfaces, and the cross-section of the mounting member is triangular.

[0018] According to some embodiments of the present invention, the electromagnetic suspension further includes: a guide rod extending in an up-down direction, the mounting member forming a guide groove extending in an up-down direction, one end of the guide rod being connected to the stator assembly and the other end being a free end, and the other end of the guide rod being located in the guide groove.

[0019] According to some optional embodiments of the present invention, the elastic unit includes a spring, which is sleeved on the outer circumference of the linear motor unit, the upper end of the spring is connected to the stator assembly, and the lower end of the spring is connected to the mover assembly.

[0020] According to some embodiments of the present invention, the vehicle electromagnetic suspension further includes: an upper support and a lower support, the upper support being arranged at the upper end of the stator assembly, the lower support being arranged at the lower end of the mover assembly, the upper end of the spring being connected to the upper support, and the lower end of the spring being connected to the lower support.

[0021] A vehicle according to an embodiment of a second aspect of the present invention comprises: an electromagnetic suspension according to an embodiment of the first aspect of the present invention.

[0022] According to the vehicle of the embodiment of the present invention, by setting the above-mentioned electromagnetic suspension, by setting multiple stators and multiple movers and each pair of stators and movers constituting a sub-linear motor, the linear motor unit can have multiple sub-linear motors. The multiple sub-linear motors can increase the overall thrust of the linear motor unit and expand the overall thrust range of the linear motor, thereby improving the vibration reduction effect of the electromagnetic suspension on the vehicle and improving the stability of the vehicle.

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

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

[0025] Figure 1 is a schematic diagram of assembling an electromagnetic suspension and a brake on a wheel according to some embodiments of the present invention;

[0026] Figure 2 yes Figure 1 A longitudinal sectional view of the electromagnetic suspension in FIG.

[0027] Figure 3 yes Figure 1 Transverse cross-sectional view of the electromagnetic suspension.

[0028] Reference numerals:

[0029] 100. Electromagnetic suspension;

[0030] 10. Linear motor unit; 1. Stator assembly; 11. Stator; 12. Housing; 2. Mover assembly; 21. Mover; 22. Mounting piece; 221. Mounting surface; 222. Guide groove; 3. Sub-linear motor; 4. Mounting flange; 5. Guide rod;

[0031] 20. Elastic unit; 61. Spring; 62. Upper support; 63. Lower support;

[0032] 30. Connecting rod structure;

[0033] 40. Brake. DETAILED DESCRIPTION

[0034] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0035] Reference below Figure 1-Figure 3 An electromagnetic suspension 100 according to an embodiment of the present invention is described.

[0036] like Figure 1-Figure 3 As shown, the electromagnetic suspension 100 according to the first embodiment of the present invention includes: a linear motor unit 10 and an elastic unit 20.

[0037] The linear motor unit 10 includes a stator assembly 1 and a mover assembly 2, one of which is suitable for connection with the vehicle body and the other is suitable for connection with the wheel. For example, when the stator assembly 1 is connected to the vehicle body, the mover assembly 2 is connected to the wheel; when the stator assembly 1 is connected to the wheel, the mover assembly 2 is connected to the vehicle body. When the linear motor unit 10 is working, an interaction force can be generated between the stator assembly 1 and the mover assembly 2, so that the stator assembly 1 and the mover assembly 2 can move relative to each other in the up and down directions. One of the stator assembly 1 and the mover assembly 2 is suitable for connection with the vehicle body and the other is suitable for connection with the wheel, so that when the linear motor unit 10 is working, the distance between the vehicle body and the wheel can be controlled, so that when the vehicle is driving on an uneven road, it is beneficial to achieve the vibration reduction effect of the linear motor unit 10 on the vehicle body.

[0038] For example, in some embodiments of the present invention, the vehicle can independently control the linear motor units 10 on different sides of the vehicle to improve the vibration reduction effect of the electromagnetic suspension 100 on the vehicle. When the vehicle is driving on the road, the vehicle speed sensor, the vehicle height position sensor, and the vehicle acceleration sensor collect real-time information of the vehicle at all times, and transmit the collected information to the control module in real time. The control module compares the information feedback with the pre-set index height, and outputs the corresponding signal to the electromagnetic control module and the power module according to the comparison result. The power module outputs control information such as different current magnitudes, directions, and the number of control actuator linear motors 3 to the linear motor units 10 on different sides of the vehicle, so that the linear motor units 10 on different sides output the corresponding required force to suppress the up and down movement of the vehicle body, so that the actual height of the vehicle body is adjusted to the required index height, so that the vibration reduction effect of the electromagnetic suspension 100 on the vehicle can be better achieved, and the stability of the vehicle during driving can be improved.

[0039] In addition, the vehicle can also improve the vehicle's passability and escape ability by independently controlling the linear motor units 10 on different sides of the vehicle. When a wheel on one side encounters a low-adhesion road surface and slips, the control module can output a corresponding direction and magnitude current to the linear motor unit 10 on the corresponding side through the battery control module and the power module, so that the linear motor unit 10 can lift the wheel on one side, thereby improving the vehicle's passability and escape ability.

[0040] The stator assembly 1 includes a plurality of stators 11, and the mover assembly 2 includes a plurality of movers 21. The number of movers 21 is the same as the number of stators 11 and corresponds one to one, so that each mover 21 can be opposite to a stator 11 in position. Each pair of stators 11 and movers 21 constitutes a sub-linear motor 3. The stator 11 may include an electromagnetic coil, and the mover 21 may include a permanent magnet. When the sub-linear motor 3 is working, when current passes through the electromagnetic coil in the stator 11, the electromagnetic coil will generate a magnetic field. According to the interaction between the magnetic field of the stator 11 and the magnetic field of the permanent magnet in the mover 21, a repulsive or attractive magnetic force is generated between the stator 11 and the mover 21, so that the stator 11 and the mover 21 produce relative movement in the up and down directions.

[0041] Such an arrangement allows the linear motor unit 10 to have multiple sub-linear motors 3. When the linear motor unit 10 is working, compared with a single sub-linear motor 3 in the related technology, the multiple sub-linear motors 3 can increase the overall thrust of the linear motor unit 10 and expand the overall thrust range of the linear motor unit 10, thereby improving the vibration reduction effect of the linear motor unit 10 on the vehicle and improving the stability of the vehicle.

[0042] At least part of the stator 11 is independently controlled, for example, part of the stator 11 can be independently controlled or all of the stators 11 can be independently controlled. Independent control of the stator 11 means that the electromagnetic coil of the stator 11 can be independently controlled. The independent control of the electromagnetic coil of the stator 11 includes controlling the connection or disconnection of the current in the electromagnetic coil, and can further include the current size and current direction in the electromagnetic coil. When the linear motor unit 10 is working, since at least part of the stator 11 can be independently controlled, the number of stators 11 powered on in the stator assembly 1 can be changed, thereby changing the number of working sub-linear motors 3, and adjusting the overall thrust of the linear motor unit 10, so that the electromagnetic suspension 100 meets the vibration reduction requirements of the vehicle and improves the overall vibration reduction effect.

[0043] When the vehicle body is under different vibration amplitudes, the thrust required by the electromagnetic suspension 100 on the vehicle body will also be different. For example, when the vibration amplitude of the vehicle body is large, the thrust required to be provided by the electromagnetic suspension 100 is large. When the vibration amplitude of the vehicle body is small, the thrust required to be provided by the electromagnetic suspension 100 is small. Therefore, at least part of the stators 11 can be controlled independently, and the electromagnetic suspension 100 can have a suitable thrust by changing the number of stators 11 energized in the stator assembly 1, so that the electromagnetic suspension 100 can better meet the overall vibration reduction requirements and achieve a better vibration reduction effect. At the same time, when the vibration amplitude of the vehicle body is small, the thrust required to be provided by the electromagnetic suspension 100 is small, and the number of stators 11 energized can be reduced, thereby reducing the energy consumption of the electromagnetic suspension 100 and making the overall more energy-efficient.

[0044] For example, when the electromagnetic suspension 100 needs to provide a larger thrust, all or most of the stators 11 can be energized, that is, the number of energized stators 11 is increased, so that the linear motor unit 10 has a larger thrust and a better vibration reduction effect on the vehicle body is achieved; when the electromagnetic suspension 100 needs to provide a smaller thrust, a small number of stators 11 can be energized, that is, the number of energized stators 11 is reduced, so that the linear motor unit 10 has a smaller thrust, which can ensure a better vibration reduction effect on the vehicle body and reduce the overall energy consumption of the linear motor unit 10.

[0045] The elastic unit 20 is connected to the linear motor unit 10. The elastic unit 20 can support the vehicle body and at the same time attenuate some of the vibrations transmitted from the wheels to the vehicle body. The elastic unit 20 is connected to the linear motor unit 10, so that the electromagnetic suspension 100 can achieve a better vibration reduction effect on the vehicle body. It can also facilitate the damping effect of the linear motor unit 10 on the elastic unit 20 and reduce the vibration amplitude of the elastic unit 20.

[0046] According to the electromagnetic suspension 100 of the embodiment of the present invention, by setting a plurality of stators 11 and a plurality of movers 21 and each pair of stators 11 and movers 21 forming a sub-linear motor 3, the linear motor unit 10 can have a plurality of sub-linear motors 3. The plurality of sub-linear motors 3 can increase the overall thrust of the linear motor unit 10 and expand the overall thrust range of the linear motor, thereby improving the vibration reduction effect of the electromagnetic suspension 100 on the vehicle and improving the stability of the vehicle.

[0047] According to some embodiments of the present invention, referring to Figure 2-Figure 3, each stator 11 is independently controlled. When the linear motor unit 10 is working, the power on and off of each stator 11 can be controlled, so as to increase the overall thrust range of the electromagnetic suspension 100. When the linear motor unit 10 is working, the working state of each stator 11 can be reasonably controlled according to the vibration amplitude of the vehicle body, so that the electromagnetic suspension 100 as a whole has a suitable thrust to reduce the vibration amplitude, meet the overall vibration reduction requirements, and ensure that the electromagnetic suspension 100 as a whole has a good vibration reduction effect on the vehicle body.

[0048] According to some embodiments of the present invention, referring to Figure 2-Figure 3 The sub-linear motor 3 is in a flat plate shape, which can make the sub-linear motor 3 have the advantages of greater thrust and high precision, and the structure is simple, and the extension of the motion stroke is more convenient. At the same time, the sub-linear motor 3 can occupy a smaller space as a whole, making the structure more compact.

[0049] According to some embodiments of the present invention, referring to Figure 2-Figure 3 The stator assembly 1 includes a housing 12 and a plurality of stators 11. The stators 11 and the movers 21 are both arranged in the housing 12. The housing 12 can protect the stators 11 and the movers 21, and prevent debris from falling between the stators 11 and the movers 21, causing damage to the sub-linear motor 3, thereby ensuring the normal use of the linear motor unit 10 as a whole. The stator 11 is connected to the housing 12. Therefore, when the sub-linear motor 3 is working, the stator 11 can be fixed as a whole, so as to facilitate the movement of the drive mover 21.

[0050] The axial direction of the housing 12 extends in the up-down direction, and the plurality of sub-linear motors 3 are arranged along the circumference of the housing 12. Thus, on the one hand, the internal structure of the housing 12 can be made more compact, so that the housing 12 as a whole occupies less space in the vehicle. On the other hand, the sub-linear motors 3 can be used to adjust the height of the vehicle body relative to the wheels in the up-down direction, thereby ensuring the vibration reduction effect of the electromagnetic suspension 100 on the vehicle body.

[0051] For example, in a specific embodiment of the present invention, a mounting flange 4 is provided at the upper end of the linear motor unit 10, and the mounting flange 4 is connected to the vehicle body by bolts, so that the linear motor unit 10 is fixed relative to the vehicle body. The stator assembly 1 can be connected to the mounting flange 4 through the housing 12, so that the stator assembly 1 can be fixed relative to the vehicle body.

[0052] According to some embodiments of the present invention, referring to Figure 2-Figure 3 The plurality of sub-linear motors 3 are arranged in a polygonal shape, so that the electromagnetic suspension 100 as a whole can withstand forces in all directions during vehicle driving, making the overall structure of the electromagnetic suspension 100 more stable and improving the stability of the electromagnetic suspension 100.

[0053] According to some embodiments of the present invention, referring to Figure 3There are three sub-linear motors 3, which can ensure that the linear motor unit 10 has a larger thrust range, so that the electromagnetic suspension 100 has a better vibration reduction effect on the entire vehicle. It can also reduce the overall cost and save costs. The three sub-linear motors 3 are arranged in a triangle, which can enhance the structural strength and rigidity of the linear motor unit 10 and improve the stability of the linear motor unit 10.

[0054] According to some embodiments of the present invention, referring to Figure 2-Figure 3 The stator 11 is in a flat plate shape, which can facilitate the arrangement and installation of the stator 11, make the overall structure more compact, and be conducive to the rational use of the overall space. When the stator 11 is in a flat plate shape, the mover 21 can be in other shapes, and the movement of the mover 21 can be achieved under the action of the magnetic force between the stator 11 and the mover 21. For example, the projection shape of the mover 21 on the horizontal plane can be an arc, or the mover 21 can be cylindrical or other shapes.

[0055] According to some embodiments of the present invention, referring to Figure 2-Figure 3 The mover 21 is in the shape of a flat plate, which can make the force-bearing area of ​​the mover 21 larger, so that the mover 21 is subjected to greater magnetic force from the stator 11, thereby ensuring the vibration reduction effect of the electromagnetic suspension 100. When the mover 21 is in the shape of a flat plate, the stator 11 can be in other shapes, and the movement of the mover 21 can be achieved under the action of the magnetic force between the stator 11 and the mover 21. For example, the projection shape of the stator 11 on the horizontal plane can be an arc, or the stator 11 can be cylindrical or other shapes.

[0056] According to some embodiments of the present invention, referring to Figure 2-Figure 3 The stator 11 and the mover 21 are both in the shape of a plate, which can facilitate the arrangement and installation of the stator 11 and the mover 21, making the overall structure of the linear motor 3 more compact, and can make the area of ​​magnetic interaction between the stator 11 and the mover 21 larger, so that the mover 21 is subjected to a greater magnetic force from the stator 11, and the vibration reduction effect of the electromagnetic suspension 100 is better.

[0057] According to some embodiments of the present invention, referring to Figure 2-Figure 3 The stator 11 of the sub-linear motor 3 is parallel to and relatively arranged with the corresponding mover 21, so that the distances between each position of the mover 21 facing the stator 11 and each position of the stator 11 facing the mover 21 are the same, so that when the sub-linear motor 3 is working, the overall force on the mover 21 is more uniform, thereby improving the stability of the movement of the mover 21.

[0058] According to some embodiments of the present invention, referring to Figure 1-Figure 3The mover assembly 2 further includes: a mounting member 22, on which the multiple movers 21 are all arranged, and the mounting member 22 is suitable for connecting with the wheel. For example, in a specific embodiment of the present invention, a mounting flange 4 is provided at the upper end of the linear motor unit 10, and the mounting flange 4 is connected to the vehicle body by bolts. The stator assembly 1 includes a housing 12 and multiple stators 11, and the housing 12 of the stator assembly 1 is connected to the vehicle body by the mounting flange 4. For example, the mounting member 22 is connected to the brake 40 of the wheel through the connecting rod structure 30, so that the mounting member 22 is connected to the wheel.

[0059] Thus, multiple movers 21 are all arranged on the mounting member 22 and the mounting member 22 is suitable for connecting with the wheel. Multiple movers 21 can be integrated on the mounting member 22, which is convenient for installing multiple movers 21 and convenient for all movers 21 to be connected with the wheel through the mounting member 22. The stator 11 is fixed relative to the vehicle body. When the sub-linear motor 3 is working, the current flows through the stator 11, so that the stator 11 and the mover 21 generate an interactive magnetic force. The mover 21 moves under the action of the magnetic force, and the movement of the mover 21 drives the movement of the mounting member 22. The mounting member 22 is connected to the wheel, and the movement of the mounting member 22 causes the wheel to move relative to the vehicle body, so that the distance between the vehicle body and the wheel can be adjusted, which can be conducive to achieving the overall vibration reduction effect of the linear motor unit 10 on the vehicle body and improving the vehicle's passability during driving.

[0060] According to some embodiments of the present invention, referring to Figure 3 The multiple movers 21 are arranged along the circumferential direction of the mounting member 22, which can facilitate the connection between the multiple movers 21 and the mounting member 22, and at the same time make the overall structure of the mover assembly 2 more compact, so that the mover assembly 2 occupies a smaller overall space.

[0061] According to some embodiments of the present invention, referring to Figure 2-Figure 3 The outer peripheral surface of the mounting member 22 has a plurality of mounting surfaces 221 arranged along the circumference of the mounting member 22. The mounting surfaces 221 are planes. The number of mounting surfaces 221 is the same as the number of movers 21 and corresponds one to one. The movers 21 are fixed to the corresponding mounting surfaces 221. For example, if the mover 21 is in the shape of a plate and the mounting surface 221 is a plane, the contact area between the mover 21 and the mounting surface 221 can be larger, which facilitates the fixation of the mover 21 to the mounting surface 221, thereby improving the safety and stability of the mover 21 when the sub-linear motor 3 is working. The position and number of the movers 21 correspond one to one with the mounting surface 221, which can make the connection between the mover 21 and the mounting member 22 more stable and make the overall movement of the linear motor unit 10 more reliable.

[0062] According to some embodiments of the present invention, referring to Figure 3There are three movers 21, which can ensure that the linear motor unit 10 has a larger thrust range, so that the electromagnetic suspension 100 has a better vibration reduction effect on the vehicle as a whole. It can also make the overall cost lower and save costs. There are three mounting surfaces 221, and the cross-section of the mounting piece 22 is triangular. With this arrangement, on the one hand, the mounting piece 22 can be subjected to force in all directions. When a single or multiple movers 21 move, the mounting piece 22 can be moved under the action of the mover 21. On the other hand, the cross-section of the mounting piece 22 is triangular, which can enhance the overall structural strength and rigidity of the mounting piece 22 and ensure the safety and stability of the mounting piece 22.

[0063] According to some embodiments of the present invention, referring to Figure 2-Figure 3 The electromagnetic suspension 100 further includes: a guide rod 5, the guide rod 5 extends in the up-down direction, the mounting member 22 is formed with a guide groove 222 extending in the up-down direction, one end of the guide rod 5 is connected to the stator assembly 1 and the other end is a free end, and the other end of the guide rod 5 is located in the guide groove 222. One end of the guide rod 5 is connected to the stator assembly 1 and can be fixed relative to the vehicle body through the stator assembly 1. The other end of the guide rod 5 is located in the guide groove 222 of the mounting member 22 and cooperates with the guide groove 222, so that the mounting member 22 can be guided and moved in the up-down direction along the guide rod 5.

[0064] When the linear motor unit 10 is working, the mover 21 of the mover assembly 2 moves under the action of the stator assembly 1, and the mounting member 22 can move together with the mover 21. Since the other end of the guide rod 5 is located in the guide groove 222 of the mounting member 22, the mounting member 22 can be moved in the up and down direction along the guide rod 5. The stator assembly 1 is relatively fixed to the vehicle body, and the mounting member 22 is connected to the wheel. The movement of the mounting member 22 in the up and down direction can adjust the distance between the vehicle body and the wheel, thereby changing the height of the vehicle body relative to the wheel, and better realizing the overall vibration reduction effect of the electromagnetic suspension 100 on the vehicle body.

[0065] According to some optional embodiments of the present invention, referring to Figure 1-Figure 3 The elastic unit 20 includes a spring 61, which is sleeved on the outer peripheral side of the linear motor unit 10, so that the overall space of the electromagnetic suspension 100 can be more compact, and the electromagnetic suspension 100 occupies less space in the up and down directions, thereby improving the overall space utilization. The upper end of the spring 61 is connected to the stator assembly 1, and the lower end of the spring 61 is connected to the mover assembly 2. Since the stator assembly 1 is connected to the vehicle body, and the mover assembly 2 is connected to the wheel. Therefore, the upper end of the spring 61 can be connected to the vehicle body through the stator assembly 1, and the lower end of the spring 61 can be connected to the wheel through the mover assembly 2. In this way, the spring 61 can support the vehicle body and can buffer part of the vibration transmitted from the wheel to the vehicle body.

[0066] When the vehicle is traveling on a flat road, the linear motor unit 10 may not work, and the spring 61 supports the vehicle body and buffers part of the vibration transmitted from the wheel to the vehicle body. The small vibration of the wheel in the up and down direction can drive the mover assembly 2 to move up and down, so that the magnetic flux lines of the mover assembly 2 continuously cut the electromagnetic coil in the stator assembly 1, generating part of the current, so that part of the vibration energy can be converted into electrical energy, achieving energy saving effect.

[0067] When the vehicle is traveling on an uneven road, the linear motor unit 10 works and the spring 61 supports the vehicle body. The linear motor will continuously change the direction and magnitude of the current according to the amplitude and direction of the up and down vibration of the wheel, and change the movement direction and thrust magnitude of the mover assembly 2, so that the thrust direction is opposite to the vibration direction of the wheel, so that the electromagnetic suspension 100 as a whole can achieve attenuation of the vibration transmitted from the wheel to the vehicle body, making the vehicle more stable and safe during driving.

[0068] According to some embodiments of the present invention, referring to Figure 1-Figure 3 The electromagnetic suspension 100 further includes: an upper support 62 and a lower support 63, wherein the upper support 62 is disposed at the upper end of the stator assembly 1, and the lower support 63 is disposed at the lower end of the mover assembly 2, wherein the upper end of the spring 61 is connected to the upper support 62, and the lower end of the spring 61 is connected to the lower support 63. The spring 61 is installed between the upper support 62 and the lower support 63, and the upper support 62 and the lower support 63 can fix and support the spring 61, thereby facilitating the connection between the spring 61 and the stator assembly 1 and the mover assembly 2. For example, the upper support 62 can be connected to the housing 12 of the stator assembly 1 by fasteners, and the lower support 63 can be connected to the mounting member 22 of the mover assembly 2 by fasteners or welding.

[0069] A vehicle according to an embodiment of a second aspect of the present invention comprises: an electromagnetic suspension 100 according to an embodiment of the first aspect of the present invention.

[0070] According to the vehicle of the present invention, by setting the above-mentioned electromagnetic suspension 100, by setting a plurality of stators 11 and a plurality of movers 21 and each pair of stators 11 and movers 21 forming a sub-linear motor 3, the linear motor unit 10 can have a plurality of sub-linear motors 3, and the plurality of sub-linear motors 3 can increase the overall thrust of the linear motor unit 10 and expand the overall thrust range of the linear motor, thereby improving the vibration reduction effect of the electromagnetic suspension 100 on the vehicle and improving the stability of the vehicle.

[0071] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0072] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An electromagnetic suspension, characterized in that: include: A linear motor unit, the linear motor unit comprising a stator assembly and a mover assembly, one of the stator assembly and the mover assembly being suitable for connection with a vehicle body and the other being suitable for connection with a wheel, the stator assembly comprising a plurality of stators, the mover assembly comprising a plurality of movers, the number of the movers being the same as the number of the stators and corresponding one to one, each pair of the stators and the movers constituting a sub-linear motor, at least part of the stators being independently controlled; An elastic unit, wherein the elastic unit is connected to the linear motor unit; The stator assembly includes a housing and a plurality of stators, the stator and the mover are both arranged in the housing, the stator is connected to the housing, the axial direction of the housing extends in the up-down direction, and the plurality of sub-linear motors are arranged along the circumference of the housing; At least part of the independent stator control refers to independent control of the electromagnetic coils of the stator, and the independent control of the electromagnetic coils of the stator includes controlling the connection or disconnection of the current in the electromagnetic coils, and the current size and current direction in the electromagnetic coils.

2. The electromagnetic suspension according to claim 1, characterized in that: Each of the stators is independently controlled.

3. The electromagnetic suspension according to claim 1, characterized in that: The sub-linear motor is in a flat plate shape.

4. The electromagnetic suspension according to claim 1, characterized in that: The plurality of sub-linear motors are arranged in a polygonal shape.

5. The electromagnetic suspension according to claim 4, characterized in that: There are three sub-linear motors, and the three sub-linear motors are arranged in a triangle.

6. The electromagnetic suspension according to claim 1, characterized in that: The stator is in the shape of a flat plate; and / or the mover is in the shape of a flat plate.

7. The electromagnetic suspension according to claim 6, characterized in that: The stator of the sub-linear motor is parallel to and opposite to the corresponding mover.

8. The electromagnetic suspension according to claim 1, characterized in that: The mover assembly further includes: a mounting member, a plurality of movers are arranged on the mounting member, and the mounting member is suitable for being connected to the wheel.

9. The electromagnetic suspension according to claim 8, characterized in that: The plurality of movers are arranged along the circumferential direction of the mounting member.

10. The electromagnetic suspension according to claim 9, characterized in that: The outer peripheral surface of the mounting member has a plurality of mounting surfaces arranged along the circumference of the mounting member, the mounting surfaces are planes, the number of the mounting surfaces is the same as the number of the movers and corresponds one to one, and the movers are mounted and fixed on the corresponding mounting surfaces.

11. The electromagnetic suspension according to claim 10, characterized in that: There are three movers, three mounting surfaces, and the cross section of the mounting piece is triangular.

12. The electromagnetic suspension according to claim 8, characterized in that: Also includes: A guide rod extending in the up-down direction, the mounting member is formed with a guide groove extending in the up-down direction, one end of the guide rod is connected to the stator assembly and the other end is a free end, and the other end of the guide rod is located in the guide groove.

13. The electromagnetic suspension according to any one of claims 1 to 12, characterized in that: The elastic unit comprises a spring, and the spring is sleeved on the outer peripheral side of the linear motor unit. The upper end of the spring is connected to the stator assembly, and the lower end of the spring is connected to the mover assembly.

14. The electromagnetic suspension according to claim 13, characterized in that: Also includes: An upper support and a lower support, wherein the upper support is arranged at the upper end of the stator assembly, and the lower support is arranged at the lower end of the mover assembly, the upper end of the spring is connected to the upper support, and the lower end of the spring is connected to the lower support.

15. A vehicle, characterized in that: include: An electromagnetic suspension according to any one of claims 1 to 14.

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