Levitation motor, suspension assembly, and vehicle

Abstract

A levitation motor, a suspension assembly, and a vehicle. The levitation motor comprises a stator assembly, a mover assembly, and a volume compensator. The mover assembly is sleeved on the stator assembly, an accommodating cavity used for accommodating cooling liquid is formed in the mover assembly, and the stator assembly divides the accommodating cavity into a first chamber and a second chamber in communication with each other. The volume compensator is provided with a first buffer cavity in communication with the first chamber and a second buffer cavity in communication with the second chamber, and the first buffer cavity and the second buffer cavity are used for storing cooling liquid from the accommodating cavity or supplying cooling liquid to the accommodating cavity when the mover assembly moves in the axial direction relative to the stator assembly.

Description

Suspension motor, suspension assembly and vehicle

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure claims priority to Chinese patent application number 202410372579.8, filed with the Patent Office of China on March 29, 2024, entitled “Suspension Motor, Suspension Assembly and Vehicle,” the entire contents of which are incorporated by reference into this disclosure. Technical Field

[0003] The present disclosure relates to the technical field of vehicle accessories, and in particular, to a suspension motor, a suspension assembly, and a vehicle. Background Art

[0004] In related technologies, linear motors can generate linear relative motion between the stator and mover through the action of electromagnetic force. When the linear motor is operating, current must flow through the winding coil. The electromagnetic field formed by the energized winding coil interacts with the magnetic field of the magnet to generate a force to control the movement of the mover. However, the winding coil generates heat when energized. When excessive heat accumulates, it will burn the coil and shorten the service life of the linear motor. Therefore, coolant can be injected into the linear motor to cool the coil, but the coolant will affect the motion range of the linear motor during normal use.

[0005] Summary of the Invention

[0006] The purpose of the present disclosure is to provide a suspension motor, a suspension assembly, and a vehicle, so that the coolant can be cooled while reducing the impact on the movement stroke of the motor, which is beneficial to quickly reduce the resistance of the mover assembly and optimize the performance of the suspension motor.

[0007] To achieve the above-mentioned objectives, a first aspect of the present disclosure provides a suspension motor, comprising a stator assembly, a mover assembly, and a volume compensator. The mover assembly is sleeved on the stator assembly, a housing chamber for accommodating coolant is provided in the mover assembly, and the stator assembly divides the housing chamber into a first chamber and a second chamber that are connected. The volume compensator has a first temporary storage chamber connected to the first chamber, and a second temporary storage chamber connected to the second chamber. The first temporary storage chamber and the second temporary storage chamber are used to store coolant from the housing chamber or replenish the coolant to the housing chamber when the mover assembly moves axially relative to the stator assembly.

[0008] Optionally, when the mover assembly moves a unit distance in the axial direction relative to the stator assembly, the volume change of the second chamber is greater than the volume change of the first chamber.

[0009] Optionally, the volume compensator includes a compensation component for adjusting the volumes of the first temporary storage chamber and the second temporary storage chamber.

[0010] Optionally, the compensation component includes a gas chamber for filling gas and a compensation piston, the number of the compensation pistons is two, and the first temporary storage chamber, the gas chamber and the second temporary storage chamber are separated in sequence by the two compensation pistons.

[0011] Optionally, the maximum value of the sum of the volumes of the first temporary storage chamber and the second temporary storage chamber is greater than or equal to the difference between the maximum value and the minimum value of the sum of the volumes of the first chamber and the second chamber.

[0012] Optionally, the movable subassembly includes a first shell, the volume compensator includes a second shell, the second shell is connected to the first shell and has an opening facing upward, the opening is sealed and detachably covered with a cover, and the first temporary storage chamber and the second temporary storage chamber are formed in the second shell.

[0013] Optionally, the first chamber and the second chamber are connected through a flow channel located between the stator assembly and the mover assembly and / or passing through the stator assembly; the suspension motor also includes a cooling assembly, the cooling assembly includes a heat dissipation flow path, the heat dissipation flow path is formed in the mover assembly and / or located outside the mover assembly, and the heat dissipation flow path is respectively connected to the first chamber and the second chamber.

[0014] Optionally, the cooling assembly further includes a heat dissipation portion, which is arranged on the heat dissipation flow path.

[0015] Optionally, the heat dissipation part includes a cooler, the cooler includes at least one first heat exchange channel connected to the heat dissipation channel; the cooler includes at least one second heat exchange channel that conducts heat with the first heat exchange channel, and the at least one second heat exchange channel is used for circulating cooling medium.

[0016] Optionally, the heat dissipation flow path includes at least one first flow path and at least one second flow path, and the first heat exchange flow channel is connected to the first chamber through at least one first flow path, and is connected to the second chamber through at least one second flow path.

[0017] Optionally, a first inlet and outlet are provided on the movable subassembly, the first inlet and outlet are connected to the first chamber, and are connected to the first heat exchange channel through the first flow path; a second inlet and outlet are provided on the movable subassembly, the second inlet and outlet are connected to the second chamber, and are connected to the first heat exchange channel through the second flow path.

[0018] Optionally, there are multiple first inlets and outlets, and at least two of them are symmetrically arranged about the axis; and / or there are multiple second inlets and outlets, and at least two of them are symmetrically arranged about the axis.

[0019] Optionally, the mover assembly includes a first shell, and the first inlet and outlet and / or the second inlet and outlet are arranged on the first shell.

[0020] Optionally, the mover assembly includes a first shell, and the cooler is connected to the first shell.

[0021] Optionally, the stator assembly includes a center rod and a first magnetic component arranged on the center rod, the mover assembly includes a first shell and a second magnetic component arranged on the first shell, one of the first magnetic component and the second magnetic component includes a stator coil, and the other includes a magnet.

[0022] Optionally, the first magnetic member includes a stator core arranged on the center rod and a stator coil arranged on the stator core, the second magnetic member includes magnetic steel, and the flow channel includes a first gap between the stator core and the magnetic steel or the first shell and a second gap between the stator coil and the magnetic steel or the first shell.

[0023] Optionally, in the axial direction, the first gaps and the second gaps are alternately arranged, and in the radial direction, the length of the first gap is smaller than the length of the second gap.

[0024] Optionally, the stator assembly includes a center rod having a channel extending in the axial direction, and the mover assembly includes a guide rod, which is movably inserted into the center rod in the axial direction.

[0025] Optionally, a first end cover is sealedly provided at one end of the central rod away from the guide rod, and a wire hole communicating with the channel is provided on the first end cover.

[0026] Optionally, the suspension motor further includes a displacement sensor, which is used to measure a distance when the mover assembly moves axially relative to the stator assembly.

[0027] Optionally, the mover assembly includes a first shell, the stator assembly includes a center rod, the center rod is axially movably inserted into the first shell, the displacement sensor is connected to the rod body of the center rod located outside the first shell, and the displacement sensor is used to detect the position of the first shell relative to the center rod.

[0028] According to a second aspect of the present disclosure, a suspension assembly is further provided. The suspension assembly includes the aforementioned suspension motor, and the suspension motor is suitable for being connected between the wheel and the vehicle body.

[0029] According to a third aspect of the present disclosure, a vehicle is provided, comprising the above-mentioned suspension assembly.

[0030] Through the above technical solution, when the mover assembly moves axially relative to the stator assembly, the coolant can flow between the first chamber and the second chamber to cool the suspension motor. Furthermore, by providing a volume compensator having a first temporary storage chamber connected to the first chamber and a second temporary storage chamber connected to the second chamber, the coolant can be temporarily stored in the first and second temporary storage chambers. For example, coolant from the accommodating chamber can be stored or coolant can be replenished to the accommodating chamber to reduce the impact on the movement stroke of the suspension motor. In addition, because the first and second chambers are each independently configured with a temporary storage chamber, the coolant flow efficiency is higher, which is conducive to quickly reducing the resistance of the mover assembly, optimizing the performance of the suspension motor, and having higher applicability.

[0031] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0033] FIG1 is a schematic structural diagram of a suspension motor provided in an exemplary embodiment of the present disclosure;

[0034] FIG2 is a schematic structural diagram of a suspension motor provided in an exemplary embodiment of the present disclosure from another angle;

[0035] FIG3 is a cross-sectional view of a levitation motor provided in an exemplary embodiment of the present disclosure;

[0036] FIG4 is a partial enlarged schematic diagram of position A in FIG3 ;

[0037] FIG5 is a partial enlarged schematic diagram of position B in FIG3 ;

[0038] FIG6 is a partial enlarged schematic diagram of position C in FIG3 ;

[0039] FIG7 is a partial enlarged schematic diagram of position D in FIG3 ;

[0040] FIG8 is a schematic structural diagram of a cooler for a suspension motor provided in an exemplary embodiment of the present disclosure.

[0041] Explanation of the reference numerals 1- stator assembly; 110- center rod; 111- channel; 120- stator core; 130- stator coil; 140- guide rod; 2- mover assembly; 210- accommodating chamber; 211- first chamber; 212- second chamber; 220- first housing; 230- first inlet and outlet; 240- second inlet and outlet; 250- magnet; 3- volume compensator; 310- first temporary storage chamber; 320- second temporary storage chamber; 330- compensating assembly; 331- gas chamber; 332- compensating piston; 340- second housing; 341- opening; 342- cover; 4- flow channel; 410- first gap; 420- second gap; 5- cooling assembly; 510- heat dissipation flow Path; 511-first flow path; 512-second flow path; 520-heat dissipation part; 521-cooler; 5211-first heat exchange flow channel; 5212-second heat exchange flow channel; 6-bearing; 7-liquid injection port; 8-first end cover; 9-wire hole; 10-displacement sensor; 11-inflating port; 12-support structure; 13-reinforcement rib; 14-second seal; 15-first pipeline; 16-second pipeline; 17-fork arm; 18-third seal; 19-first seal; 20-mounting bracket. DETAILED DESCRIPTION

[0042] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0043] It should be noted that all actions of acquiring signals, information or data in the present disclosure are carried out in compliance with the corresponding data protection laws and policies of the country where they are located and with the authorization given by the owner of the corresponding device.

[0044] In this disclosure, unless otherwise indicated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions within the space of the suspension motor when in use. "Inside" and "outside" refer to the inside and outside relative to the outline of the component or structure itself. Furthermore, it should be noted that terms such as "first" and "second" are used to distinguish one element from another and do not imply order or importance. Furthermore, in the description with reference to the accompanying drawings, the same reference numerals in different drawings represent the same element.

[0045] The inventors have discovered that in related technologies, linear motors usually use electromagnetic drive to drive linear relative motion between the stator and the mover. During the movement of the linear motor, the coolant can flow with the relative motion between the stator and the mover of the linear motor to absorb heat through contact with the stator coil and reduce the temperature of the stator coil. However, in this process, the total volume of the space inside the linear motor for accommodating the coolant will change. Therefore, when the amount of coolant injected into the interior of the linear motor is small, it will affect the cooling effect of the winding coil. When the amount of coolant injected into the interior of the linear motor is large, it will affect the movement stroke of the linear motor during normal use.

[0046] Based on this, according to the first aspect of the present disclosure, a suspension motor is provided, as shown in Figures 1 to 8, the suspension motor includes a stator assembly 1, a mover assembly 2 and a volume compensator 3. The mover assembly 2 is sleeved on the stator assembly 1, and a accommodating chamber 210 for accommodating coolant is provided in the mover assembly 2. The stator assembly 1 divides the accommodating chamber 210 into a first chamber 211 and a second chamber 212 that are connected; the volume compensator 3 has a first temporary storage chamber 310 that is connected to the first chamber 211, and a second temporary storage chamber 320 that is connected to the second chamber 212. The first temporary storage chamber 310 and the second temporary storage chamber 320 are used to store coolant from the accommodating chamber 210 or replenish coolant to the accommodating chamber 210 when the mover assembly 2 moves axially relative to the stator assembly 1.

[0047] Through the above technical solution, that is, the suspension motor provided by the present disclosure, when the mover assembly 2 moves axially relative to the stator assembly 1, the coolant can flow between the first chamber 211 and the second chamber 212 to cool the suspension motor, and by providing a volume compensator 3, the volume compensator 3 has a first temporary storage chamber 310 connected to the first chamber 211, and a second temporary storage chamber 320 connected to the second chamber 212, so that the coolant can be temporarily stored through the first temporary storage chamber 310 and the second temporary storage chamber 320, for example, the coolant from the accommodating chamber 210 can be stored or the coolant can be replenished to the accommodating chamber 210 to reduce the impact on the movement stroke of the suspension motor. In addition, since the first chamber 211 and the second chamber 212 are each independently configured with a temporary storage chamber, the flow efficiency of the coolant is higher, which is conducive to quickly reducing the resistance of the mover assembly 2, optimizing the performance of the suspension motor, and having higher applicability.

[0048] The suspension motor may include but is not limited to a linear motor, such as a permanent magnet synchronous linear motor. In addition, the axial direction may refer to the upper and lower directions of FIG. 3 .

[0049] Furthermore, the coolant can be cooling oil. In the present disclosure, the accommodating cavity 210 is filled with cooling oil as the coolant. Because cooling oil has high insulation properties, it can be used to directly cool the heat source, thereby improving the cooling effect. Furthermore, because cooling oil has high boiling and freezing points, it has a wider operating temperature range and is more suitable for use.

[0050] The cooling oil may be, for example, lubricating oil or insulating oil, which can achieve heat dissipation through heat exchange, but the present disclosure is not limited thereto.

[0051] In addition, in the axial direction, FIG3 exemplarily shows that the first chamber 211 can be arranged above the second chamber 212. Of course, the above-mentioned specific embodiment in which the first chamber 211 is arranged above the second chamber 212 is exemplary. In other embodiments not shown in the figures, the first chamber 211 can also be arranged below the second chamber 212. The present disclosure does not specifically limit such deformation methods, and those skilled in the art can adaptively design according to actual application requirements.

[0052] The present disclosure is exemplarily described in detail with the first chamber 211 being located above the second chamber 212:

[0053] In some embodiments, when the mover assembly 2 moves axially relative to the stator assembly 1 per unit distance, the volume change of the second chamber 212 may be greater than the volume change of the first chamber 211. Since in the process of the mover assembly 2 moving axially relative to the stator assembly 1, the volume change of the second chamber 212 is different from the volume change of the first chamber 211 per unit distance, specifically, the volume change of the second chamber 212 is greater than the volume change of the first chamber 211. As a result, the volume of the accommodating chamber 210 will also change. Therefore, by providing the above-mentioned volume compensator 3, the change in the coolant in the accommodating chamber 210 when the mover assembly 2 moves axially relative to the stator assembly 1 can be stored or replenished through the first temporary storage chamber 310 and the second temporary storage chamber 320 of the volume compensator 3, which is beneficial to reducing the resistance to the mover assembly 2, that is, reducing the impact on the normal movement stroke of the suspension motor.

[0054] It should be noted that, since the volume change of the second chamber 212 is greater than the volume change of the first chamber 211, as the movable assembly 2 moves axially relative to the stator assembly 1, the volume of the accommodating chamber 210 will also change. Here, the volume of the accommodating chamber 210 is the sum of the volumes of the first chamber 211, the second chamber 212, and the flow channel 4 connecting the first chamber 211 and the second chamber 212 (to be explained below, the flow channel 4 includes the first gap 410 and the second gap 420). Therefore, when the movable subassembly 2 moves axially relative to the stator subassembly 1, for example, when the first housing 220 of the movable subassembly 2 moves upward axially relative to the center rod 110 of the stator subassembly 1, the volume of the second chamber 212 will be reduced, the volume of the first chamber 211 will increase, and the volume of the accommodating chamber 210 will be reduced. Part of the coolant in the first chamber 211 and the second chamber 212 will be stored in the first temporary storage chamber 310 and the second temporary storage chamber 320. Conversely, when the first housing 220 of the movable subassembly 2 moves downward axially relative to the center rod 110 of the stator subassembly 1, the volume of the second chamber 212 will be reduced. The volume of the chamber 212 increases, the volume of the first chamber 211 decreases, and the volume of the accommodating chamber 210 increases. Part of the coolant in the first temporary storage chamber 310 and the second temporary storage chamber 320 will be replenished into the first chamber 211 and the second chamber 212. As a result, the accommodating chamber 210 can always be in a state of being filled with coolant, ensuring that the coolant continuously and effectively plays a cooling role on the suspension motor. At the same time, during the movement of the mover assembly 2 relative to the stator assembly 1, due to the presence of the volume compensator 3, the coolant can reduce the resistance to the mover assembly 2, that is, reduce the impact on the normal movement stroke of the suspension motor.

[0055] In addition, for the convenience of description, the position of the movable assembly 2 relative to the stator assembly 1 when the volume of the accommodating cavity 210 is the largest is set as the first position, and the position of the movable assembly 2 relative to the stator assembly 1 when the volume of the accommodating cavity 210 is the smallest is set as the second position. For example, in the drawing direction shown in Figure 3, when the movable assembly 2 moves to the bottom relative to the stator assembly 1, the volume of the accommodating cavity 210 is the largest. At this time, the movable assembly 2 is located in the first position relative to the stator assembly 1. When the movable assembly 2 moves to the top relative to the stator assembly 1, the volume of the accommodating cavity 210 is the smallest. At this time, the movable assembly 2 is located in the second position relative to the stator assembly 1.

[0056] In some embodiments, as shown in FIG3 , the volume compensator 3 may include a compensation component 330 for adjusting the volumes of the first temporary storage chamber 310 and the second temporary storage chamber 320. For example, when the coolant in the first chamber 211 and the second chamber 212 is stored in the first temporary storage chamber 310 and the second temporary storage chamber 320 or the coolant in the first temporary storage chamber 310 and the second temporary storage chamber 320 is replenished into the first chamber 211 and the second chamber 212, the volumes of the first temporary storage chamber 310 and the second temporary storage chamber 320 are adaptively increased or decreased by the compensation component 330, which is beneficial to improving the flow efficiency of the coolant, thereby quickly reducing the resistance of the mover assembly 2, improving the smoothness of the axial movement of the suspension motor, and optimizing the performance of the suspension motor.

[0057] The compensation component 330 can be adaptively designed according to actual application requirements. For example, in some embodiments, as shown in FIG3 , the compensation component 330 may include a gas chamber 331 for filling gas and a compensation piston 332. There are two compensation pistons 332. The first temporary storage chamber 310, the gas chamber 331, and the second temporary storage chamber 320 are separated in sequence by the two compensation pistons 332. In this way, when the movable assembly 2 moves from the first position to the second position relative to the stator assembly 1, that is, when the first shell 220 of the movable assembly 2 moves upward axially relative to the center rod 110 of the stator assembly 1, part of the coolant in the first chamber 211 and the second chamber 212 will be stored in the first temporary storage chamber 310 and the second temporary storage chamber 320, and push the compensation piston 332 to move to increase the volume of the first temporary storage chamber 310 and the second temporary storage chamber 320. When the piston 2 is in the air, the volume of the gas chamber 331 decreases and the gas is compressed. When the movable assembly 2 moves from the second position to the first position relative to the stator assembly 1, that is, when the first housing 220 of the movable assembly 2 moves downward in the axial direction relative to the center rod 110 of the stator assembly 1, part of the coolant in the first temporary storage chamber 310 and the second temporary storage chamber 320 is replenished into the first chamber 211 and the second chamber 212. At this time, the gas in the gas chamber 331 is decompressed and pushes the compensation piston 332 to reset, thereby reducing the volume of the first temporary storage chamber 310 and the second temporary storage chamber 320 accordingly. At the same time, in the process of the gas decompression pushing the compensation piston 332 to reset, it is also beneficial to improve the flow efficiency of the coolant in the first temporary storage chamber 310 and the second temporary storage chamber 320, so as to quickly reduce the resistance of the movable assembly 2, improve the smoothness of the axial movement of the suspension motor, and optimize the performance of the suspension motor.

[0058] 3 exemplarily shows that an air filling port 11 communicating with the gas chamber 331 is provided on the outer wall of the first shell 220. In this way, the air filling port 11 can be used to fill and discharge the gas chamber 331, and after the gas chamber 331 is inflated, the air filling port 11 can be sealed by, for example, a plug (not shown in the figure) to avoid air leakage. Of course, the above embodiment is exemplary, and those skilled in the art can adaptably design it according to actual application requirements, with the purpose of being able to fill and discharge the gas chamber 331 and ensure a high degree of airtightness of the gas chamber 331. The present disclosure is not limited to this.

[0059] Of course, the specific embodiments of the compensation component 330 described above are also exemplary. In other embodiments not shown in the figures, the compensation component 330 may also include a push plate and a spring arranged in the gas chamber 331. In this way, when the movable component 2 moves from the first position to the second position relative to the stator component 1, that is, when the first shell 220 of the movable component 2 moves upward axially relative to the center rod 110 of the stator component 1, part of the coolant in the first chamber 211 and the second chamber 212 will be stored in the first temporary storage chamber 310 and the second temporary storage chamber 320, and push the push plate to move to increase the volume of the first temporary storage chamber 310 and the second temporary storage chamber 320. At this time, the volume of the gas chamber 331 is reduced and the spring is compressed; and when the movable component 2 moves relative to the stator component 1 When the stator assembly 1 moves from the second position to the first position, that is, when the first housing 220 of the mover assembly 2 moves axially downward relative to the center rod 110 of the stator assembly 1, part of the coolant in the first temporary storage chamber 310 and the second temporary storage chamber 320 is replenished into the first chamber 211 and the second chamber 212. At this time, the spring in the gas chamber 331 is decompressed and pushes the push plate to return to its original position, thereby correspondingly reducing the volume of the first temporary storage chamber 310 and the second temporary storage chamber 320. At the same time, the process of the spring decompressing and pushing the push plate to return to its original position is also conducive to improving the flow efficiency of the coolant in the first temporary storage chamber 310 and the second temporary storage chamber 320, thereby quickly reducing the resistance of the mover assembly 2, improving the smoothness of the axial movement of the suspension motor, and optimizing the performance of the suspension motor. The present disclosure is not limited to this.

[0060] In some embodiments, the maximum value of the sum of the volumes of the first temporary storage chamber 310 and the second temporary storage chamber 320 may be greater than or equal to the difference between the maximum value and the minimum value of the sum of the volumes of the first chamber 211 and the second chamber 212, wherein it can be understood that the volume of the flow channel 4 does not change due to the movement of the mover assembly 2 relative to the stator assembly 1. Thus, when the sum of the volumes of the first chamber 211 and the second chamber 212 is the maximum, the mover assembly 2 is in the first position relative to the stator assembly 1, and when the sum of the volumes of the first chamber 211 and the second chamber 212 is the minimum, the mover assembly 2 is in the second position relative to the stator assembly 1. In this way, when the mover assembly 2 moves relative to the stator assembly 1 from the first position In the process of moving to the second position, the first temporary storage chamber 310 and the second temporary storage chamber 320 can store part of the coolant flowing out of the first chamber 211 and the second chamber 212 until the mover assembly 2 moves to the second position relative to the stator assembly 1, so as not to affect the normal movement stroke of the suspension motor. When the mover assembly 2 is placed in the second position relative to the stator assembly 1, the sum of the volumes of the first temporary storage chamber 310 and the second temporary storage chamber 320 can be a preset maximum value, or can be a state that does not reach the maximum value, thereby avoiding liquid flooding, so as to avoid damage to the volume compensator 3 or the suspension motor and affecting the normal use of the suspension motor. The present disclosure does not make specific limitations on this.

[0061] In some embodiments, as shown in FIG3 , the mover assembly 2 may include a first housing 220 , and the volume compensator 3 may include a second housing 340 , which is connected to the first housing 220 . FIG1 to FIG3 each exemplarily illustrate that the first housing 220 may be provided with, for example, a support structure 12 for supporting and fixing the volume compensator 3 , which has a simple structure and high reliability. The support structure may be an inherent structure of the first housing 220 or a support frame externally connected to the first housing 220 . Furthermore, a reinforcing rib 13 may be provided between the first housing 220 and the volume compensator 3 and / or between the support structure 12 and the first housing 220 to improve the stability of the connection. The present disclosure is not limited thereto.

[0062] In addition, it should be noted that in other embodiments not shown in the figures, the volume compensator 3 may also be provided on the stator assembly 1 so as not to affect the relative movement between the mover assembly 2 and the stator assembly 1 , but the present disclosure is not limited thereto.

[0063] Optionally, in some embodiments, as shown in FIG3 , the second shell 340 may have an upward opening 341, and the opening 341 may be sealed and detachably covered with a cover 342, forming a first temporary storage chamber 310 and a second temporary storage chamber 320 in the second shell 340. The overall structure is simple and the detachable connection of the cover 342 also facilitates, for example, the installation operation of the compensation piston 332 in the second shell 340.

[0064] 6 exemplarily shows that in order to ensure that the cover body 342 and the second shell 340 have a high degree of airtightness, a second sealing member 14 such as a sealing ring or a sealing gasket can be provided between the second shell 340 and the cover body 342 to achieve sealing between the second shell 340 and the cover body 342, thereby ensuring that the volume compensator 3 has a high degree of airtightness.

[0065] In addition, the first temporary storage chamber 310 and the second temporary storage chamber 320 can be respectively connected to the first chamber 211 and the second chamber 212 through at least one first pipeline 15 and at least one second pipeline 16, wherein those skilled in the art can adaptively design the specific connection structure of the first pipeline 15 and the second pipeline 16 according to actual application requirements, the purpose of which is to enable the first chamber 211 to be connected to the first temporary storage chamber 310, and the second chamber 212 to be connected to the second temporary storage chamber 320, while ensuring a high degree of airtightness. The present disclosure does not make any specific limitations on this.

[0066] In some embodiments, referring to Figures 3 and 7, the first chamber 211 and the second chamber 212 can be connected through the flow channel 4 located between the stator assembly 1 and the movable assembly 2, that is, the flow channel 4 can be located between the stator assembly 1 and the movable assembly 2. Of course, the flow channel 4 can also pass through the stator assembly 1, and the present disclosure does not make any specific limitations on this.

[0067] Exemplarily, the stator assembly 1 may include a center rod 110 and a first magnetic member arranged on the center rod 110, the mover assembly 2 includes a first shell 220 and a second magnetic member arranged on the first shell 220, one of the first magnetic member and the second magnetic member includes a stator coil 130, and the other includes a magnet 250.

[0068] The following embodiments will be specifically described as follows: the first magnetic component includes the stator coil 130 , and the second magnetic component includes the magnetic steel 250 .

[0069] Optionally, in some embodiments, referring to FIG3 and FIG7 , the stator assembly 1 may include a center rod 110, a stator core 120 disposed on the center rod 110, and a stator coil 130 disposed on the stator core 120, the mover assembly 2 may include a first housing 220 and a magnetic steel 250 disposed on the inner side wall of the first housing 220, the flow channel 4 may include a first gap 410 between the stator core 120 and the magnetic steel 250 or the first housing 220, and a second gap 420 between the stator coil 130 and the magnetic steel 250 or the first housing 220, so that, for example, when the mover assembly 2 moves from the first position toward the second position relative to the stator assembly 1 During the movement, part of the coolant in the second chamber 212 can flow toward the first chamber 211 through the first gap 410 and the second gap 420. In the process of flowing through the first gap 410 and the second gap 420, the coolant directly contacts the stator coil 130, the stator core 120 and the magnet 250 to enable cooling. Similarly, in the process of the mover assembly 2 moving from the second position to the first position relative to the stator assembly 1, the coolant in the first chamber 211 can flow toward the second chamber 212 through the first gap 410 and the second gap 420 to enable cooling the stator coil 130, the stator core 120 and the magnet 250.

[0070] In which, in the axial direction, the first gap 410 and the second gap 420 can be arranged alternately, and in the radial direction, the length b of the first gap 410 is smaller than the length a of the second gap 420. It can be understood that, due to the limitation of the structural size, the length b of the first gap 410 is relatively small. Due to the Venturi effect, the speed of the coolant increases sharply when flowing in the first gap 410. Since the length b of the first gap 410 is smaller than the length a of the second gap 420, the flow speed of the coolant in the second gap 420 will also increase, but the flow speed is smaller than the flow speed in the first gap 410. Therefore, the coolant forms a vortex flow in the first gap 410. At the direct contact position between the coolant and the stator coil 130 and the stator core 120, the flow state of the coolant is turbulent, the flow speed is relatively high, the convection heat transfer coefficient is relatively large, and the cooling performance is better.

[0071] The radial direction mentioned above can refer to the left and right directions in FIG. 7 .

[0072] In addition, the magnetic steel 250 can be a permanent magnet with high magnetic properties, the stator core 120 can be composed of, for example, silicon steel sheets, and the stator coil 130 can be, for example, a three-phase winding assembly. In this way, by winding the three-phase winding assembly around the stator core 120, after energizing the stator coil 130, it is possible to achieve axial movement of the mover assembly 2 relative to the stator assembly 1 by means of electromagnetic force. Of course, the above specific embodiments are exemplary, and those skilled in the art can also adaptably design according to actual application requirements, with the purpose of enabling the mover assembly 2 to move axially relative to the stator assembly 1. The present disclosure is not limited to this.

[0073] In some embodiments, as shown in Figures 1 to 3, the suspension motor may further include a cooling assembly 5, which includes a heat dissipation flow path 510. The heat dissipation flow path 510 may be formed in the movable assembly 2 or located outside the movable assembly 2. Of course, the heat dissipation flow path 510 may also be formed on the movable assembly 2 or provided outside the movable assembly 2. The heat dissipation flow path 510 is respectively connected to the first chamber 211 and the second chamber 212. In this way, the coolant can flow through the heat dissipation flow path 510 to be cooled and cooled, thereby ensuring the cooling effect on the suspension motor. For example, the heat dissipation flow path 510 may be formed inside the first shell 220. In this way, the coolant can flow in the heat dissipation flow path 510 formed in the first shell 220 to dissipate heat and cool through the first shell 220. Alternatively, the heat dissipation flow path 510 may also include a heat dissipation pipe connected to the first chamber 211 and the second chamber 212. In this way, the coolant can flow in the heat dissipation pipe to dissipate heat and cool through the heat dissipation pipe.

[0074] In some embodiments, referring to Figures 1 to 3, the cooling assembly 5 may further include a heat dissipation portion 520, which is disposed on the heat dissipation flow path 510 to act on the heat dissipation flow path 510 to cool the coolant flowing inside. The heat dissipation portion 520 can remove the heat remaining in the coolant, thereby preventing the heat from remaining in the coolant, causing the coolant temperature to continue to rise, and resulting in a problem of reduced cooling effect.

[0075] The heat dissipation unit 520 may include a fan to cool the first housing 220 or the heat dissipation pipe by blowing air, or the heat dissipation unit 520 may include a nozzle to cool the first housing 220 or the heat dissipation pipe by spraying water, thereby cooling the coolant. Of course, air cooling and water cooling may be used simultaneously, or any other method capable of cooling the heat dissipation flow path 510 may be used, and this disclosure does not specifically limit this. It is understood that the heat dissipation flow path 510 is arranged in parallel with the flow path of the coolant through the first gap 410 and the second gap 420, thereby playing a diversion role. In addition, the length of the first gap 410 and the second gap 420 is relatively small, so the arrangement of the heat dissipation flow path 510 can effectively reduce the damping force generated when the coolant flows, thereby playing a damping adjustment role.

[0076] Optionally, in some embodiments, as shown in FIG1 to FIG3, the heat dissipation portion 520 may include a cooler 521, such as a shell and tube heat exchanger or a plate-fin heat exchanger, etc. The cooler 521 includes at least one first heat exchange channel 5211 connected to the heat dissipation channel 510. The cooler 521 can dissipate heat from the coolant flowing through the first heat exchange channel 5211 in any suitable manner, for example, air cooling, such as natural wind or wind from a fan, may be used; or water cooling, for example, the cooler 521 may include at least one second heat exchange channel 5212 that conducts heat with the first heat exchange channel 5211, and at least one second heat exchange channel 5212 is used to allow the cooling medium to circulate. In this way, the cooling medium circulates in the second heat exchange channel 5212 to act on the first heat exchange channel 5211 through heat exchange, thereby being able to cool the coolant in the first heat exchange channel 5211. The cooling medium may be cooling water, cooling oil, or other cooling media that can achieve heat dissipation effects through heat exchange, but the present disclosure is not limited to this.

[0077] It is understandable that, as shown in Figures 1, 2 and 8, a liquid inlet and a liquid outlet for the cooling medium are provided on the second heat exchange channel 5212 to ensure the heat exchange and cooling effect on the coolant. Among them, the cooler 521 can be set at any suitable position so as not to affect the normal movement stroke of the suspension motor. For example, the cooler 521 can be connected to the first shell 220. For example, the support structure 12 of the first shell 220 can be used to simultaneously support and fix the volume compensator 3 and the cooler 521. The specific arrangement of the support structure 12 has been discussed in detail above and will not be repeated in this disclosure. In addition, in some embodiments not shown in the figure, the cooler 521 can also be provided on the stator assembly 1. The present disclosure is not limited to this.

[0078] In some embodiments, as shown in Figures 1 to 8, the heat dissipation flow path 510 may include at least one first flow path 511 and at least one second flow path 512. The first heat exchange flow path 5211 is connected to the first chamber 211 through at least one first flow path 511, and is connected to the second chamber 212 through at least one second flow path 512. In addition, a first inlet and outlet 230 and / or a second inlet and outlet 240 are provided on the movable subassembly 2. The first inlet and outlet 230 is connected to the first chamber 211 and is connected to the first heat exchange flow path 5211 through the first flow path 511. The second inlet and outlet 240 is connected to the second chamber 212 and is connected to the first heat exchange flow path 5211 through the second flow path 512. Among them, the first inlet and outlet 230 and / or the second inlet and outlet 240 can be set on the first shell 220, and at least part of the space in the first shell 220 can be directly used to replace the pipeline, so the structure is simpler and the space occupancy rate is lower. In this way, take the movement of the movable component 2 relative to the stator component 1 from the first position to the second position as an example. During this process, the coolant in the second chamber 212 flows into the second flow path 512 through the second inlet and outlet 240, and flows into the first heat exchange channel 5211 through the second flow path 512, and then cools down and dissipates heat under the action of the cooling medium in the second heat exchange channel 5212, and finally flows through the first flow path 511 and flows into the first chamber 211 through the first inlet and outlet 230. At the same time, the coolant flowing into the first chamber 211 through the first gap 410 and the second gap 420 has a faster flow rate, so that it can be better mixed with the coolant flowing through the external first flow path 511 and the second flow path 512 and cooled by the cooler 521, so that the overall coolant is cooled. When the mover assembly 2 moves from the second position toward the first position relative to the stator assembly 1 , the flow direction of the coolant is reversed, which will not be further described in this disclosure.

[0079] It is understood that, in order to ensure that the external flow path can divert and damp the coolant, as well as to ensure efficient cooling of the coolant, the first flow path 511 and the second flow path 512 can be provided in multiple numbers. Similarly, the number of the first inlet and outlet 230 can be provided in multiple numbers according to usage requirements, with the multiple first inlet and outlet 230 spaced circumferentially. The number of the second inlet and outlet 240 can be provided in multiple numbers according to usage requirements, with the multiple second inlet and outlet 240 spaced circumferentially. In the present disclosure, the number of the first flow path 511 and the second flow path 512, and the number of the first inlet and outlet 230 and the second inlet and outlet 240 are each provided in two numbers. The two first flow paths 511 and the corresponding first inlet and outlet 230 can be arranged axially symmetrically. Similarly, to facilitate the arrangement and installation of the pipelines, the two second flow paths 512 and the corresponding second inlet and outlet 240 can also be arranged axially symmetrically. This ensures efficient cooling of the coolant, facilitates diversion of the coolant, improves coolant flow efficiency, and facilitates rapid reduction of the resistance of the mover assembly 2, thereby facilitating movement of the suspended motor. The present disclosure is not limited to this.

[0080] In some embodiments, referring to Figures 3 and 4, the stator assembly 1 may include a center rod 110 having an axially extending channel 111, and the mover assembly 2 includes a guide rod 140, which is axially movably plugged into the center rod 110 to guide the movement of the mover assembly 2, thereby preventing the stator core 120 from easily damaging the magnet 250 due to magnetic bias force, and improving reliability.

[0081] 3 exemplarily shows that the guide rod 140 can be connected to an actuator such as a fork arm 17 to perform linear motion to meet motion requirements, wherein a bearing 6 is provided between the center rod 110 and the guide rod 140 to facilitate relative sliding of the center rod 110 and the guide rod 140, and can be lubricated and cooled by a coolant, and a third seal 18 such as a sealing ring or a sealing gasket can be provided between the fork arm 17 and the first shell 220 to ensure that the suspension motor as a whole has a high degree of airtightness. The present disclosure does not specifically limit the specific structure of the fork arm 17, and those skilled in the art can adaptively design it according to actual application requirements, with the purpose of being able to achieve the connection and fixation of the guide rod 140 and ensuring that the suspension motor as a whole has a high degree of airtightness.

[0082] It can be understood that the radial dimension of the guide rod 140 can be smaller than the radial dimension of the center rod 110. Therefore, in the axial direction along the center rod 110, the cross-sectional area of ​​the first chamber 211 corresponding to the guide rod 140 position is smaller than the cross-sectional area of ​​the second chamber 212 corresponding to the center rod 110 position. Therefore, when the movable assembly 2 moves a unit distance, the volume change of the second chamber 212 is not the same as the volume change of the first chamber 211. Specifically, the volume change of the second chamber 212 is greater than the volume change of the first chamber 211.

[0083] In addition, in some embodiments, referring to Figures 3 and 4, a first end cover 8 is sealedly provided at one end of the center rod 110 away from the guide rod 140, and a wire hole 9 connected to the channel 111 is provided on the first end cover 8, so that the wiring harness passes through the above-mentioned wire hole 9, the channel 111 and the center rod 110 and is electrically connected to the stator coil 130 of the stator assembly 1, thereby meeting the wiring requirements of the suspension motor, wherein wiring holes for the wiring harness to pass through can be provided on the center rod 110, and can be sealed, and the present disclosure does not make specific limitations on this.

[0084] Among them, it should be noted that while ensuring the wiring requirements of the suspension motor, a high degree of airtightness needs to be ensured between the wiring hole, the wire hole 9, the first end cover 8 and the center rod 110. The specific sealing structure is not specifically limited in this disclosure. Those skilled in the art can choose sealing structures such as plugs or sealing rings that are well known in the art to achieve sealing operations in various places. The purpose is to ensure that the suspension motor as a whole has a high degree of airtightness. This disclosure does not make specific limitations on this.

[0085] In addition, to ensure a high degree of sealing between the center rod 110 and the first housing 220, a first sealing member 19, such as a sealed bearing or a sealing gasket, may be provided between the center rod 110 and the first housing 220. This ensures a high degree of sealing while also facilitating relative sliding between the first housing 220 and the center rod 110. The present disclosure is not limited thereto.

[0086] In some embodiments, as shown in Figures 1 to 3, the suspension motor may further include a displacement sensor 10, which is used to measure the distance when the mover assembly 2 moves axially relative to the stator assembly 1, thereby facilitating the measurement of the movement stroke of the suspension motor.

[0087] 1 to 3 exemplarily show that the center rod 110 is movably inserted into the first shell 220 along the axial direction, and the displacement sensor 10 is connected to the rod body of the center rod 110 located outside the first shell 220. For example, the displacement sensor 10 can be a laser sensor and is fixedly connected to the center rod 110 through the mounting bracket 20. In this way, the laser of the laser sensor is irradiated on the top wall of the first shell 220, and the internal receiver of the laser sensor receives the reflected laser signal. In this way, the displacement sensor 10 can be used to detect the position of the first shell 220 relative to the center rod 110 to measure the motion stroke of the suspension motor. The structure is simple and easy to install and manufacture.

[0088] Of course, the specific embodiment of the displacement sensor 10 described above is merely exemplary. Those skilled in the art may adaptively design the specific structures of the displacement sensor 10 and the mounting bracket 20 according to actual application requirements. The purpose is to enable the displacement sensor 10 to measure the distance of the mover assembly 2 relative to the stator assembly 1 when the mover assembly 2 moves axially. The present disclosure is not limited thereto.

[0089] In addition, in other embodiments not shown in the figures, the above-mentioned displacement sensor 10 can also be connected to the first shell 220. For example, the laser sensor is installed on the first shell 220, and the center rod 110 can be provided with a convex rib (not shown in the figure). In this way, the laser of the laser sensor can be irradiated on the convex rib and the movement stroke of the suspension motor can be measured based on the reflected laser signal. The present disclosure does not specifically limit this type of deformation method, and those skilled in the art can design it adaptively according to actual application requirements.

[0090] In addition, in some embodiments, as shown in FIG5 , a liquid filling port 7 may be provided on the first shell 220 to facilitate the filling of coolant into the accommodating cavity 210 of the first shell 220 , and when the accommodating cavity 210 is filled with liquid, the liquid filling port 7 may be sealed by, for example, a plug or an oiling screw to avoid leakage.

[0091] According to a second aspect of the present disclosure, a suspension assembly is provided, comprising the aforementioned suspension motor, adapted to be connected between the wheels and the vehicle body. The suspension assembly has all the advantages of the aforementioned suspension motor, which are not further elaborated herein.

[0092] According to a third aspect of the present disclosure, a vehicle is provided, comprising the aforementioned suspension assembly. The vehicle exhibits all the beneficial effects of the aforementioned suspension assembly, which are not further detailed herein. The vehicle may be a gasoline-powered vehicle, a plug-in hybrid vehicle, or a new energy vehicle, without specific limitation in this disclosure.

[0093] Based on the above embodiments, the present disclosure exemplarily describes the cooling process of the suspension motor, as follows:

[0094] 3 , when the movable assembly 2 moves from the first position to the second position relative to the stator assembly 1, that is, when the first housing 220 of the movable assembly 2 moves upward in the axial direction relative to the center rod 110 of the stator assembly 1, the volume of the second chamber 212 decreases, and part of the coolant in the second chamber 212 flows into the first chamber 211 through the first gap 410 and the second gap 420. At this time, the coolant can directly cool the stator coil 130, the stator core 120 and the magnetic steel 250 in the process of flowing through the first gap 410 and the second gap 420. At the same time, part of the coolant in the second chamber 212 will also flow into the first chamber 211 through the first heat exchange channel 5211. At this time, the coolant can achieve cooling and heat dissipation under the action of the cooling medium in the second heat exchange channel 5212 in the process of flowing through the first heat exchange channel 5211. At the same time, part of the coolant in the second chamber 212 will also be directly stored in the second temporary storage chamber 320.

[0095] Since part of the coolant in the second chamber 212 flows into the first chamber 211, and as the first housing 220 of the mover assembly 2 moves upward in the axial direction relative to the center rod 110 of the stator assembly 1, the volume of the first chamber 211 increases, but since the volume change of the second chamber 212 is greater than the volume change of the first chamber 211, when the mover assembly 2 moves a unit distance in the axial direction relative to the stator assembly 1, the volume change of the first chamber 211 cannot completely accommodate the coolant flowing out of the second chamber 212 due to the volume change. For this reason, part of the coolant in the first chamber 211 is also stored in the first temporary storage chamber 310. Therefore, due to the presence of the volume compensator 3, the coolant can reduce the resistance to the mover assembly 2, which is beneficial to the movement of the suspension motor;

[0096] It can be understood that when the first housing 220 of the movable assembly 2 moves upward in the axial direction relative to the center rod 110 of the stator assembly 1, the volume of the accommodating chamber 210 is reduced, and as the coolant in the accommodating chamber 210 is stored in the volume compensator 3, the coolant pushes the compensating piston 332 to move to increase the volume of the first temporary storage chamber 310 and the second temporary storage chamber 320. At this time, the volume of the gas chamber 331 is reduced and the gas is compressed. At the same time, since the volume change of the second chamber 212 is greater than the volume change of the first chamber 211, and since the first housing 220 moves upward relative to the center rod 110, the coolant in the second chamber 212 flows into the second temporary storage chamber 320 at a faster flow rate. Therefore, the lower compensation piston 332 of the two compensation pistons 332 moves faster than the upper compensation piston 332.

[0097] On the contrary, when the movable assembly 2 moves from the second position to the first position relative to the stator assembly 1, that is, when the first housing 220 of the movable assembly 2 moves downward in the axial direction relative to the center rod 110 of the stator assembly 1, the volume of the first chamber 211 decreases, and part of the coolant in the first chamber 211 flows into the second chamber 212 through the first gap 410 and the second gap 420. At this time, the coolant can directly cool the stator coil 130, the stator core 120 and the magnetic steel 250 in the process of flowing through the first gap 410 and the second gap 420. At the same time, part of the coolant in the first chamber 211 will also flow into the second chamber 212 through the first heat exchange channel 5211. At this time, the coolant can be cooled and dissipated under the action of the cooling medium in the second heat exchange channel 5212 in the process of flowing through the first heat exchange channel 5211. At the same time, part of the coolant in the first chamber 211 will also be directly stored in the first temporary storage chamber 310.

[0098] Since part of the coolant in the first chamber 211 flows into the second chamber 212, and as the first housing 220 of the mover assembly 2 moves downward in the axial direction relative to the center rod 110 of the stator assembly 1, the volume of the second chamber 212 increases, but since the volume change of the second chamber 212 is greater than the volume change of the first chamber 211, when the mover assembly 2 moves a unit distance in the axial direction relative to the stator assembly 1, the coolant flowing out due to the volume change of the first chamber 211 cannot completely meet the volume change of filling the second chamber 212. Therefore, the second chamber 21 2, the cooling liquid is drawn from the second temporary chamber 320 and the first chamber 211 into the second chamber 212. Therefore, the second temporary chamber 320 and the first chamber 211 will further replenish the cooling liquid into the second chamber 212. Since the first chamber 211 is further replenished with cooling liquid, the pressure in the first chamber 211 is also reduced. Therefore, the cooling liquid is replenished from the first temporary chamber 310 into the first chamber 211. Therefore, due to the presence of the volume compensator 3, the cooling liquid can reduce the resistance to the mover assembly 2, which is beneficial to the movement of the suspension motor.

[0099] Among them, it can be understood that when the first shell 220 of the movable assembly 2 moves downward in the axial direction relative to the center rod 110 of the stator assembly 1, the volume of the accommodating chamber 210 increases, and as the coolant in the temporary storage chamber is replenished into the accommodating chamber 210, the gas decompression will push the compensation piston 332 to move to reduce the volume of the first temporary storage chamber 310 and the second temporary storage chamber 320. At the same time, since the volume change of the second chamber 212 is greater than the volume change of the first chamber 211, and since the second chamber 212 can directly draw coolant into the second temporary storage chamber 320 at a faster speed, the compensation piston 332 located at the bottom of the two compensation pistons 332 has a faster reset movement speed than the compensation piston 332 located at the top.

[0100] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0101] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0102] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A suspension motor, characterized in that: include: stator assembly (1); A mover assembly (2) is sleeved on the stator assembly (1), wherein a housing cavity (210) for housing a cooling liquid is provided in the mover assembly (2), and the stator assembly (1) divides the housing cavity (210) into a first chamber (211) and a second chamber (212) that are in communication with each other; as well as The volume compensator (3) has a first temporary storage chamber (310) connected to the first chamber (211), and a second temporary storage chamber (320) connected to the second chamber (212), wherein the first temporary storage chamber (310) and the second temporary storage chamber (320) are used to store coolant from the accommodating chamber (210) or to replenish the coolant to the accommodating chamber (210) when the movable assembly (2) moves axially relative to the stator assembly (1).

2. The levitation motor according to claim 1, characterized in that: When the mover assembly (2) moves a unit distance in the axial direction relative to the stator assembly (1), the volume change of the second chamber (212) is greater than the volume change of the first chamber (211).

3. The suspension motor according to claim 1 or 2, characterized in that: The volume compensator (3) comprises a compensation component (330) for adjusting the volumes of the first temporary storage chamber (310) and the second temporary storage chamber (320).

4. The levitation motor according to claim 3, characterized in that: The compensation component (330) includes a gas chamber (331) for filling gas and a compensation piston (332), the number of the compensation pistons (332) is two, and the first temporary storage chamber (310), the gas chamber (331) and the second temporary storage chamber (320) are separated in sequence by the two compensation pistons (332).

5. The levitation motor according to claim 3 or 4, characterized in that: The maximum value of the sum of the volumes of the first temporary storage chamber (310) and the second temporary storage chamber (320) is greater than or equal to the difference between the maximum value and the minimum value of the sum of the volumes of the first chamber (211) and the second chamber (212).

6. The levitation motor according to any one of claims 1 to 5, characterized in that: The movable subassembly (2) includes a first housing (220), and the volume compensator (3) includes a second housing (340). The second housing (340) is connected to the first housing (220) and has an opening (341) facing upward. The opening (341) is sealed and detachably covered with a cover (342). The first temporary storage chamber (310) and the second temporary storage chamber (320) are formed in the second housing (340).

7. The levitation motor according to any one of claims 1 to 6, characterized in that: The first chamber (211) and the second chamber (212) are in communication via a flow channel (4) located between the stator assembly (1) and the mover assembly (2) and / or passing through the stator assembly (1); The suspension motor further comprises a cooling assembly (5), wherein the cooling assembly (5) comprises a heat dissipation flow path (510). (510) is formed in the movable subassembly (2) and / or is located outside the movable subassembly (2), and the heat dissipation flow path (510) is respectively connected to the first chamber (211) and the second chamber (212).

8. The levitation motor according to claim 7, characterized in that: The cooling assembly (5) further includes a heat dissipation portion (520), and the heat dissipation portion (520) is arranged on the heat dissipation flow path (510).

9. The levitation motor according to claim 8, characterized in that: The heat dissipation portion (520) includes a cooler (521), and the cooler (521) includes at least one first heat exchange channel (5211) connected to the heat dissipation channel (510); The cooler (521) includes at least one second heat exchange channel (5212) that conducts heat with the first heat exchange channel (5211), and the at least one second heat exchange channel (5212) is used for circulating a cooling medium.

10. The levitation motor according to claim 9, characterized in that: The heat dissipation flow path (510) includes at least one first flow path (511) and at least one second flow path (512); the first heat exchange flow channel (5211) is connected to the first chamber (211) through at least one first flow path (511), and is connected to the second chamber (212) through at least one second flow path (512).

11. The levitation motor according to claim 10, characterized in that: The movable subassembly (2) is provided with a first inlet and outlet (230), the first inlet and outlet (230) being in communication with the first chamber (211), and being in communication with the first heat exchange channel (5211) through the first flow path (511); The movable subassembly (2) is provided with a second inlet and outlet (240), the second inlet and outlet (240) being in communication with the second chamber (212), and being in communication with the first heat exchange channel (5211) via the second flow path (512).

12. The levitation motor according to claim 11, characterized in that: There are multiple first inlets and outlets (230), and at least two of the first inlets and outlets (230) are symmetrically arranged about the axial direction; and / or, There are a plurality of second inlets and outlets (240), and at least two of the second inlets and outlets (240) are symmetrically arranged about the axial direction.

13. The levitation motor according to claim 11 or 12, characterized in that: The movable subassembly (2) comprises a first housing (220), and the first inlet and outlet (230) and / or the second inlet and outlet (240) are arranged on the first housing (220).

14. The levitation motor according to any one of claims 9 to 13, characterized in that: The movable subassembly (2) comprises a first housing (220), and the cooler (521) is connected to the first housing (220).

15. The levitation motor according to any one of claims 7 to 14, characterized in that: The stator assembly (1) includes a center rod (110) and a first magnetic component arranged on the center rod (110); the mover assembly (2) includes a first shell (220) and a second magnetic component arranged on the first shell (220); one of the first magnetic component and the second magnetic component includes a stator coil (130), and the other includes a magnetic steel (250).

16. The levitation motor according to claim 15, characterized in that: The first magnetic member includes a stator core (120) arranged on the center rod (110) and a stator coil (130) arranged on the stator core (120); the second magnetic member includes a magnetic steel (250); the flow channel (4) includes a first gap (410) between the stator core (120) and the magnetic steel (250) or the first shell (220); and a second gap (420) between the stator coil (130) and the magnetic steel (250) or the first shell (220).

17. The levitation motor according to claim 16, characterized in that: In the axial direction, the first gaps (410) and the second gaps (420) are alternately arranged, and in the radial direction, the length of the first gaps (410) is smaller than the length of the second gaps (420).

18. The levitation motor according to any one of claims 1 to 17, characterized in that: The stator assembly (1) includes a center rod (110) having a channel (111) extending in the axial direction; the mover assembly (2) includes a guide rod (140) which is movably plugged into the center rod (110) in the axial direction.

19. The levitation motor according to claim 18, characterized in that: An end of the center rod (110) away from the guide rod (140) is sealed with a first end cover (8), and the first end cover (8) is provided with a wire hole (9) communicating with the channel (111).

20. The levitation motor according to any one of claims 1 to 19, characterized in that: The suspension motor further comprises a displacement sensor (10), and the displacement sensor (10) is used to measure the distance when the mover assembly (2) moves axially relative to the stator assembly (1).

21. The levitation motor according to claim 20, characterized in that: The movable subassembly (2) includes a first housing (220), the stator assembly (1) includes a center rod (110), the center rod (110) is axially movably plugged into the first housing (220), the displacement sensor (10) is connected to a rod body of the center rod (110) located outside the first housing (220), and the displacement sensor (10) is used to detect the position of the first housing (220) relative to the center rod (110).

22. A suspension assembly, characterized in that: The suspension motor comprises the suspension motor according to any one of claims 1 to 21, wherein the suspension motor is suitable for being connected between the wheel and the vehicle body.

23. A vehicle, characterized in that: Including the suspension assembly as claimed in claim 22.

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