Housing, stator assembly, mover assembly, suspension motor, suspension assembly, and vehicle

Abstract

A housing, a stator assembly, a mover assembly, a suspension motor, a suspension assembly, and a vehicle. The housing is provided with a first heat exchange flow channel and a heat dissipation structure. The first heat exchange flow channel is in communication with an accommodating cavity which is provided in the housing and configured to accommodate a first cooling medium. The heat dissipation structure is configured to dissipate heat of the first cooling medium flowing through the first heat exchange flow channel.

Description

Housing, stator assembly, mover assembly, suspension motor, suspension assembly and vehicle

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure claims priority to a Chinese patent application filed with the Patent Office of China on March 29, 2024, with application number 202420629973.0 and titled “Casing, stator module, mover module, 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 housing, a stator assembly, a mover assembly, a suspension motor, a suspension assembly, and a vehicle. Background Art

[0004] In related technologies, linear motors typically use electromagnetic drive to generate linear relative motion between the stator and mover. When a linear motor is operating, current must flow through the stator coils. The electromagnetic field generated by the energized stator coils interacts with the magnetic field of the magnets to control the movement of the mover. However, the stator coils generate heat when energized. Excessive heat accumulation can burn the stator coils, shortening the lifespan of the linear motor.

[0005] Summary of the Invention

[0006] The purpose of the present disclosure is to provide a housing, a stator assembly, a mover assembly, a suspension motor, a suspension assembly and a vehicle, which can dissipate heat from a first cooling medium through a heat dissipation structure, so that the first cooling medium can always maintain a low temperature, which is conducive to ensuring that the first cooling medium has a high cooling effect and improving the heat dissipation effect and space utilization of the suspension motor.

[0007] In order to achieve the above-mentioned purpose, the first aspect of the present disclosure provides a shell, which is provided with a first heat exchange channel and a heat dissipation structure. The first heat exchange channel is connected to the accommodating cavity in the shell for accommodating a first cooling medium, and the heat dissipation structure is used to dissipate heat of the first cooling medium flowing through the first heat exchange channel.

[0008] Optionally, the heat dissipation structure includes a second heat exchange channel provided on the housing, so that a second cooling medium flowing through the second heat exchange channel is heat-conducted with a first cooling medium flowing through the first heat exchange channel.

[0009] Optionally, the shell has a partition structure, and the first heat exchange channel and the second heat exchange channel are separated by the partition structure.

[0010] Optionally, the accommodating chamber includes a first accommodating chamber and a second accommodating chamber that are connected to each other, the first heat exchange channel includes a first channel section, the first channel section and the second heat exchange channel are separated by the partition structure, the first channel section is connected to the first accommodating chamber through at least one second channel section, and is connected to the second accommodating chamber through at least one third channel section.

[0011] Optionally, a first inlet and outlet are provided on the shell, the first inlet and outlet are connected to the first accommodating cavity, and are connected to the first flow channel section through the second flow channel section; a second inlet and outlet are provided on the shell, the second inlet and outlet are connected to the second accommodating cavity, and are connected to the first flow channel section through the third flow channel section.

[0012] 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.

[0013] Optionally, the second heat exchange channel has at least one inlet and at least one outlet formed on the outer wall of the shell.

[0014] Optionally, the shell is provided with an opening communicating with the accommodating cavity, and a blocking piece is detachably provided at the opening.

[0015] A second aspect of the present disclosure provides a stator assembly, comprising the housing provided by the first aspect.

[0016] A third aspect of the present disclosure provides a suspension motor, which includes the stator assembly provided by the second aspect.

[0017] A fourth aspect of the present disclosure provides a mover assembly, which includes the housing provided by the first aspect.

[0018] A fifth aspect of the present disclosure provides a suspension motor, comprising a stator assembly and a mover assembly provided in the fourth aspect. The housing is sleeved on the stator assembly. The accommodating chamber is divided into a first accommodating chamber and a second accommodating chamber connected to each other by the stator assembly. The first accommodating chamber and the second accommodating chamber are connected via a flow channel located between the stator assembly and the mover assembly and / or passing through the stator assembly.

[0019] Optionally, when the mover assembly moves a unit distance axially relative to the stator assembly, the volume change of the second accommodating cavity is greater than the volume change of the first accommodating cavity, and the first cooling medium includes coolant and gas filled in the accommodating cavity.

[0020] Optionally, the stator assembly includes a center rod, a stator core arranged on the center rod, and a stator coil arranged on the stator core. The mover assembly also includes a magnet arranged on the inner wall of the shell. The flow channel includes a first gap between the stator core and the magnet or the shell and a second gap between the stator coil and the magnet or the shell.

[0021] 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.

[0022] Optionally, the stator assembly includes a center rod having a channel extending in the axial direction, and the mover assembly further includes a guide rod, which is movably inserted into the center rod in the axial direction.

[0023] 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.

[0024] 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.

[0025] Optionally, the stator assembly includes a center rod, which is axially movably inserted into the shell, and the displacement sensor is connected to the rod body of the center rod located outside the shell, and the displacement sensor is used to detect the position of the shell relative to the center rod.

[0026] A sixth aspect of the present disclosure provides a suspension assembly, which includes the suspension motor provided in the third aspect or the fifth aspect, and the suspension motor is suitable for being connected between the wheel and the vehicle body.

[0027] A seventh aspect of the present disclosure provides a vehicle, comprising the above-mentioned suspension assembly.

[0028] Through the above-mentioned technical solution, the housing provided by the present disclosure is provided with a first heat exchange channel, and the first heat exchange channel is connected to the housing cavity for accommodating the first cooling medium within the housing. As a result, when the first cooling medium flows through the first heat exchange channel, heat is dissipated from the first cooling medium via the heat dissipation structure. This allows the first cooling medium to maintain a relatively low temperature, preventing heat accumulation in the housing cavity and affecting the cooling effect, thereby facilitating the first cooling medium to have a high cooling effect. Thus, when the housing is applied to, for example, a suspension motor, the heat dissipation effect of the suspension motor can be improved, facilitating the long-term and stable operation of the suspension motor. Furthermore, by providing the above-mentioned first heat exchange channel and heat dissipation structure on the housing, at least a portion of the space within the housing can be directly utilized, resulting in a simpler structure and a lower space occupancy rate. Thus, when the housing is applied to, for example, a suspension motor, the installation space occupied by the suspension motor can be reduced, thereby achieving a higher space utilization rate.

[0029] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] 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:

[0031] FIG1 is a schematic structural diagram of a suspension motor provided in an exemplary embodiment of the present disclosure;

[0032] FIG2 is a cross-sectional view of a levitation motor provided in an exemplary embodiment of the present disclosure;

[0033] FIG3 is a cross-sectional view of a levitation motor provided in an exemplary embodiment of the present disclosure from another angle;

[0034] FIG4 is a partial enlarged schematic diagram of position A in FIG2 ;

[0035] FIG5 is a partial enlarged schematic diagram of position B in FIG3 ;

[0036] FIG6 is a partial enlarged schematic diagram of position C in FIG3 ;

[0037] FIG7 is a partial enlarged schematic diagram of position D in FIG3 ;

[0038] FIG8 is a partial enlarged schematic diagram of position E in FIG3 .

[0039] Description of reference numerals 1-housing; 110-first heat exchange channel; 111-first channel section; 120-heat dissipation structure; 121-second heat exchange channel; 122-inlet; 123- Outlet; 130-accommodating chamber; 131-first accommodating chamber; 132-second accommodating chamber; 140-partition structure; 150-second flow channel section; 160-third flow channel section; 170-first inlet and outlet; 180-second inlet and outlet; 190-opening; 2-stator assembly; 210-center rod; 211-channel; 220-stator core; 230-stator coil; 240-first end cover; 241-wire hole; 3-moving subassembly; 310-magnet; 320-guide rod; 4-flow channel; 410-first gap; 420-second gap; 5-displacement sensor; 6-fork arm; 7-bearing; 8-first seal; 9-second seal; 10-mounting bracket. DETAILED DESCRIPTION

[0040] 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.

[0041] 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.

[0042] The inventors have discovered that in related technologies, linear motors typically use electromagnetic drive to generate linear relative motion between the stator and the mover. When the linear motor is working, current needs to flow through the stator coil. The electromagnetic field formed by the stator coil after power is applied interacts with the magnetic field of the magnet to control the motion of the mover. However, the stator coil generates heat when power is applied. When too much heat accumulates, the stator coil will burn, affecting the service life of the linear motor. Related technologies typically use a method of filling coolant between the stator and the mover. During the motion 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, thereby reducing the temperature of the stator coil. However, after the linear motor has been running for a long time, the temperature of the coolant will continue to rise, resulting in poor heat dissipation of the linear motor, affecting the service life of the linear motor.

[0043] Based on this, according to the first aspect of the present disclosure, a housing is provided, as shown in Figures 1 to 8, a first heat exchange channel 110 and a heat dissipation structure 120 are provided on the housing 1, the first heat exchange channel 110 is connected to the accommodating cavity 130 in the housing 1 for accommodating the first cooling medium, and the heat dissipation structure 120 is used to dissipate heat from the first cooling medium flowing through the first heat exchange channel 110.

[0044] Through the above technical solution, that is, the housing provided by the present disclosure, the housing 1 is provided with a first heat exchange channel 110, and the first heat exchange channel 110 is connected to the housing cavity 130 for accommodating the first cooling medium in the housing 1, so that when the first cooling medium flows through the first heat exchange channel 110, the heat dissipation structure 120 can be used to dissipate heat from the first cooling medium. This can keep the first cooling medium at a low temperature at all times, avoid heat accumulation in the housing cavity and affect the cooling effect, thereby ensuring that the first cooling medium has a high cooling effect. In this way, when the housing 1 is applied to, for example, a suspension motor, the heat dissipation effect of the suspension motor can be improved, which is conducive to ensuring that the suspension motor operates stably for a long time. In addition, the provision of the above-mentioned first heat exchange channel 110 and the heat dissipation structure on the housing 1 can directly utilize at least part of the space of the housing 1, resulting in a simpler structure and a lower space occupancy rate. In this way, when the housing 1 is applied to, for example, a suspension motor, the installation space occupied by the suspension motor can be reduced, thereby achieving a higher space utilization rate.

[0045] It should be noted that the housing 1 can be applied to, for example, a mover assembly 3 , but is not limited thereto. For example, the housing 1 can also be applied to, for example, a stator assembly.

[0046] Taking the application of the housing 1 to the mover assembly 3 as an example, the accommodating cavity 130 in the housing of the mover assembly 3 can be divided into a first accommodating cavity 131 and a second accommodating cavity 132 that are connected by the stator assembly 2. Thus, when, for example, the housing 1 of the mover assembly 3 moves axially relative to the center rod 210 of the stator assembly 2, a first cooling medium, for example, including a coolant, can flow repeatedly between the first accommodating cavity 131 and the second accommodating cavity 132. At the same time, the heat generated between the mover assembly 3 and the stator assembly 2 can be taken away by, for example, the coolant to achieve cooling of, for example, a suspended motor. Moreover, when, for example, the housing 1 of the mover assembly 3 moves axially relative to the center rod 210 of the stator assembly 2, if the volume of the first accommodating chamber 131 decreases and the volume of the second accommodating chamber 132 increases, a portion of the coolant in the first accommodating chamber 131 will flow to the second accommodating chamber 132 through, for example, the flow channel 4. During this process, the coolant can absorb, for example, the heat generated by the suspension motor. At the same time, another portion of the coolant in the first accommodating chamber 131 will flow to the second accommodating chamber 132 through the first heat exchange flow channel 110. In the process of the coolant flowing through the first heat exchange flow channel 110, it can be cooled by heat conduction with the heat dissipation structure 120. In this way, when the two portions of coolant are mixed in the second accommodating chamber 132, the temperature of the coolant flowing through the first heat exchange flow channel 110 is lower after cooling, so it can absorb the heat of the coolant flowing to the second accommodating chamber 132 through the flow channel 4. The amount of coolant is increased, so that the temperature of the mixed coolant is reduced. Conversely, if the volume of the first accommodating chamber 131 increases and the volume of the second accommodating chamber 132 decreases, a portion of the coolant in the second accommodating chamber 132 will flow into the first accommodating chamber 131 through, for example, the flow channel 4. In this process, the coolant can absorb, for example, the heat generated by the suspension motor. At the same time, another portion of the coolant in the second accommodating chamber 132 will flow into the first accommodating chamber 131 through the first heat exchange flow channel 110. In the process of the coolant flowing through the first heat exchange flow channel 110, it can be cooled by heat conduction with the heat dissipation structure 120. In this way, when the two portions of coolant are mixed in the first accommodating chamber 131, the temperature of the coolant flowing through the first heat exchange flow channel 110 is lower after cooling, so it can absorb the heat of the coolant flowing to the first accommodating chamber 131 through the flow channel 4, so that the temperature of the mixed coolant is reduced. In addition, providing the first heat exchange channel 110 on the housing 1 of the mover assembly 3 can reduce the overall volume of the mover assembly 3. When applied to, for example, a suspension motor, it can reduce the installation space occupied by the suspension motor, thereby achieving higher space utilization.

[0047] Therefore, the housing 1 of the mover assembly 3 can dissipate heat for the first cooling medium through the heat dissipation structure 120, so that the first cooling medium, for example, including the coolant, can always maintain a low temperature, which is beneficial to ensuring that the coolant has a high cooling effect, avoiding the problem that the temperature of the coolant will continue to rise after the suspension motor has been running for a long time in the related technology, improving the heat dissipation effect of the suspension motor, and helping to ensure that the suspension motor can work stably for a long time.

[0048] It is understood that in an embodiment not shown, when the housing 1 is applied to a stator assembly, the housing cavity within the stator assembly can also be divided into a first housing cavity and a second housing cavity that are interconnected by the mover assembly. The cooling principle is similar to that when the housing 1 is applied to the mover assembly. Similarly, the first cooling medium, for example, including a coolant, can be kept at a relatively low temperature, thereby ensuring that the coolant has a high cooling effect. This avoids the problem of the coolant temperature continuously rising after the suspension motor has been running for a long time, as is the case in the related art. This improves the heat dissipation effect of the suspension motor and helps ensure that the suspension motor operates stably for a long time. This disclosure will not be elaborated on here.

[0049] 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. 2 .

[0050] Furthermore, the coolant can be cooling oil. In the present disclosure, the accommodating cavity 130 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.

[0051] 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.

[0052] In addition, in the axial direction, Figure 2 exemplarily shows that the first accommodating cavity 131 can be arranged above the second accommodating cavity 132. Of course, the above-mentioned specific embodiment in which the first accommodating cavity 131 is arranged above the second accommodating cavity 132 is exemplary. In other embodiments not shown in the figures, the first accommodating cavity 131 can also be arranged below the second accommodating cavity 132. The present disclosure does not specifically limit this type of deformation method, and those skilled in the art can adaptively design it according to actual application requirements.

[0053] The present disclosure is specifically described in an exemplary manner by assuming that the first accommodating cavity 131 is located above the second accommodating cavity 132:

[0054] In addition, for the convenience of description, the position of the movable assembly 3 relative to the stator assembly 2 when the volume of the accommodating cavity 130 is the largest is set as the first position, and the position of the movable assembly 3 relative to the stator assembly 2 when the volume of the accommodating cavity 130 is the smallest is set as the second position. For example, in the drawing direction shown in Figure 2, when the movable assembly 3 moves to the bottom relative to the stator assembly 2, the volume of the accommodating cavity 130 is the largest. At this time, the movable assembly 3 is located in the first position relative to the stator assembly 2. When the movable assembly 3 moves to the top relative to the stator assembly 2, the volume of the accommodating cavity 130 is the smallest. At this time, the movable assembly 3 is located in the second position relative to the stator assembly 2.

[0055] In some embodiments, as shown in Figure 6, the heat dissipation structure 120 may include a second heat exchange channel 121 arranged on the outer shell 1, so that the second cooling medium flowing through the second heat exchange channel 121 and the first cooling medium flowing through the first heat exchange channel 110, for example, including a coolant, are heat-conducted, thereby achieving heat dissipation of the coolant flowing through the first heat exchange channel 110.

[0056] Optionally, in some embodiments, referring to Figures 4 and 6, the shell 1 may have a partition structure 140, and the first heat exchange channel 110 and the second heat exchange channel 121 are separated by the partition structure 140 to achieve stable flow of the coolant in the first heat exchange channel 110 and the second cooling medium in the second heat exchange channel 121 and achieve heat conduction through the partition structure 140. The structure is simple and easy to install and manufacture.

[0057] Among them, those skilled in the art can adaptively design the specific structure of the partition structure 140 according to actual application requirements, and the present disclosure does not make specific restrictions on this. The purpose is to enable the first heat exchange channel 110 and the second heat exchange channel 121 to be separated by the partition structure 140 and to achieve heat conduction through the partition structure 140. For example, the above-mentioned shell 1 may have a chamber, which is divided into a first chamber and a second chamber by the partition structure 140. The first chamber forms at least part of the first heat exchange channel 110, and the second chamber forms at least part of the second heat exchange channel 121, and the partition structure 140 can be constructed as, for example, a first partition structure that separates the first chamber and the second chamber, or the partition structure 140 can also include a second partition structure that separates the first chamber and the second chamber, and a first heat-conducting fin arranged on the second partition structure and located in the first chamber and a second heat-conducting fin located in the second chamber. The present disclosure does not make specific restrictions on such deformation methods, and those skilled in the art can adaptively design according to actual application requirements.

[0058] For example, the housing 1, along with the first heat exchange channel 110, the second heat exchange channel 121, and the partition structure 140, can be integrally formed using a 3D printing process, for example, to simplify manufacturing. Alternatively, the second cooling medium can be cooling water, cooling oil, or another cooling medium capable of achieving heat dissipation through heat exchange. The present disclosure is not limited thereto.

[0059] Of course, it should be noted that in other embodiments not shown in the figures, the heat dissipation structure 120 may also include a fan to cool the above-mentioned housing 1 or the first heat exchange channel 110 by air cooling, or the heat dissipation structure 120 may also include a nozzle to cool the above-mentioned housing 1 or the first heat exchange channel 110 by water cooling, thereby cooling the coolant, or the heat dissipation structure 120 may also include heat dissipation fins to achieve heat dissipation with the help of external wind, for example. Of course, air cooling, water cooling or heat dissipation fins may be used simultaneously, or any other method capable of cooling the first heat exchange channel 110 may be used, and this disclosure does not specifically limit this.

[0060] In some embodiments, with reference to Figures 1 to 8, the accommodating chamber 130 may include a first accommodating chamber 131 and a second accommodating chamber 132 that are connected to each other. The first heat exchange channel 110 may include a first channel section 111. The first channel section 111 and the second heat exchange channel 121 are separated by a partition structure 140. The first channel section 111 is connected to the first accommodating chamber 131 through at least one second channel section 150, and is connected to the second accommodating chamber 132 through at least one third channel section 160. In addition, a first inlet and outlet 170 and / or a second inlet and outlet 180 are provided on the housing 1. The first inlet and outlet 170 is connected to the first accommodating chamber 131 and is connected to the first channel section 111 through the second channel section 150. The second inlet and outlet 180 is connected to the second accommodating chamber 132 and is connected to the first channel section 111 through the third channel section 160.

[0061] The first inlet and outlet 170 and / or the second inlet and outlet 180 are directly provided on the housing 1. By directly utilizing at least a portion of the space within the housing 1 to replace the pipeline, the structure is simpler and the space occupancy rate is lower. Taking the movement of the movable assembly 3 relative to the stator assembly 2 from the first position to the second position as an example, during this process, part of the coolant in the second accommodating chamber 132 flows into the first heat exchange channel 110 through the second inlet and outlet 180, and is cooled by heat conduction with the heat dissipation structure 120, and finally flows into the first accommodating chamber 131 through the first inlet and outlet 170. At the same time, part of the coolant flowing into the first accommodating chamber 131 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 after the heat is dissipated by the heat dissipation structure 120, so that the mixed coolant is cooled. When the movable assembly 3 moves relative to the stator assembly 2 from the second position to the first position, the flow direction of the coolant is reversed, which will not be described in detail in this disclosure.

[0062] It can be understood that in order to ensure the diversion and damping adjustment effects of the first heat exchange channel 110 on the coolant, as well as the cooling efficiency of the coolant, the second channel section 150 and the third channel section 160 can be set to multiple. Similarly, the number of the first inlet and outlet 170 can be set to multiple according to usage requirements, and the multiple first inlets and outlets 170 are arranged at intervals along the circumferential direction. The number of the second inlet and outlet 180 can be set to multiple according to usage requirements, and the multiple second inlets and outlets 180 are arranged at intervals along the circumferential direction. The present disclosure exemplarily sets the number of the second channel section 150 and the third channel section 160, the first inlet and outlet 170 and the second inlet and outlet 180 to two, wherein the two second channel sections 150 and the corresponding first inlet and outlet 170 can be arranged symmetrically about the axial direction. Similarly, in order to facilitate the setting and installation of the pipeline, the two third channel sections 160 and the corresponding second inlet and outlet 180 can also be arranged symmetrically about the axial direction. Thus, the cooling efficiency of the coolant can be guaranteed, and it is beneficial to realize the diversion of the coolant, improve the flow efficiency of the coolant, and quickly reduce the resistance of the mover assembly 3, so as to facilitate the movement of the suspended motor. The present disclosure is not limited thereto.

[0063] In some embodiments, as shown in Figures 1, 3, and 6, the second heat exchange channel 121 may have at least one inlet 122 and at least one outlet 123 formed on the outer wall of the housing 1 to facilitate the guidance of the second cooling medium into the second heat exchange channel 121 to ensure the heat exchange and cooling effect on the coolant. The specific arrangement and number of the inlet 122 and outlet 123 are not specifically limited in this disclosure, and those skilled in the art can adaptably design them according to actual application requirements, as long as the second cooling medium can be guided into the second heat exchange channel 121.

[0064] In some embodiments, as shown in reference figure 7, the housing 1 may be provided with an opening 190 that communicates with the accommodating chamber 130. For example, the opening 190 may be communicated with the first accommodating chamber 131, or the opening 190 may be communicated with the second accommodating chamber 132. The present disclosure does not make any specific limitations on this, so as to facilitate the filling of coolant and gas into the accommodating chamber 130 of the housing 1, and when the accommodating chamber 130 is filled with liquid and gas, the opening 190 may be detachably provided with, for example, a plug or an oiling screw to seal the opening 190, thereby ensuring a high degree of airtightness.

[0065] As described above, the housing 1 can be applied to a stator assembly or a mover assembly.

[0066] For example, according to the second aspect of the present disclosure, a stator assembly (not shown) is provided, which may include the housing 1 of the first aspect above, wherein, for example, a stator core and a stator coil, etc. may be arranged on the housing 1. The stator assembly provided by the second aspect is not shown in the figure, but those skilled in the art can understand the structure of the stator assembly and the inventive concept of arranging a heat dissipation structure and a first heat exchange channel on the housing based on the stator assembly of the existing linear motor.

[0067] Accordingly, the stator assembly provided in the second aspect can be applied to a suspension motor, such as a linear motor. Thus, according to a third aspect of the present disclosure, a suspension motor is provided, comprising the stator assembly provided in the second aspect.

[0068] In addition, according to the fourth aspect of the present disclosure, a movable subassembly is provided, which includes the above-mentioned shell 1. For example, with reference to Figures 1 to 8, the shell 1 of the movable subassembly 3 can be sleeved on the center rod 210 of the stator assembly 2. The shell 1 of the movable subassembly 3 is provided with a first heat exchange channel 110 and a heat dissipation structure 120. The first heat exchange channel 110 is connected to the accommodating cavity 130 in the shell 1 for accommodating the first cooling medium, and the accommodating cavity 130 can be divided into a first accommodating cavity 131 and a second accommodating cavity 132 that are connected by, for example, the stator assembly 2. The heat dissipation structure 120 is used to dissipate heat from the first cooling medium flowing through the first heat exchange channel 110.

[0069] According to a fifth aspect of the present disclosure, a suspension motor is provided. Referring to Figures 1 to 8 , the suspension motor includes a stator assembly 2 and a mover assembly 3 according to the fourth aspect. A housing 1 is sleeved onto the stator assembly 2. A housing 1 is separated by the stator assembly 2 into a first housing chamber 131 and a second housing chamber 132, which are connected to each other. The first housing chamber 131 and the second housing chamber 132 are connected by a flow channel 4 located between the stator assembly 2 and the mover assembly 3 and / or passing through the stator assembly 2. The suspension motor is capable of dissipating heat from a first cooling medium via a heat dissipation structure, which can maintain a low temperature for the first cooling medium, such as a coolant, at all times. This helps ensure a high cooling effect of the coolant, avoids the problem of the coolant temperature continuously rising after long-term operation of suspension motors in the related art, improves the heat dissipation effect of the suspension motor, and helps ensure the long-term stable operation of the suspension motor. Furthermore, the suspension motor has all the beneficial effects of the mover assembly provided in the fourth aspect, which will not be further elaborated in this disclosure.

[0070] In some embodiments, the first cooling medium may include a coolant and a gas filled in the accommodating cavity 130. It should be noted that when the accommodating cavity 130 is filled with the coolant and the gas, the first heat exchange channel 110 of the housing 1 is also filled with the coolant and the gas. For example, the coolant may be first filled into the accommodating cavity 130 through the opening 190 so that the coolant submerges 4 / 5 of the cavity of the accommodating cavity 130, and at the same time, the first heat exchange channel 110 is filled with the coolant to the same liquid level as the accommodating cavity 130. Subsequently, the remaining space in the accommodating cavity 130 and the first heat exchange channel 110 is filled with gas through the opening 190. Of course, it should be noted that the volume of coolant filled in the present disclosure is exemplary, and those skilled in the art may adaptively adjust the coolant level according to actual application requirements.

[0071] Among them, as the movable component 3 moves a unit distance axially relative to the stator component 2, the volume of the accommodating chamber 130 will also change because the volume change of the second accommodating chamber 132 is greater than the volume change of the first accommodating chamber 131. Here, the volume of the accommodating chamber 130 is the sum of the volumes of the first accommodating chamber 131, the second accommodating chamber 132, and the flow channel 4 connecting the first accommodating chamber 131 and the second accommodating chamber 132 (to be explained below, the flow channel 4 includes the first gap 410 and the second gap 420). Therefore, when the movable component 3 moves axially relative to the stator component 2, for example, when the outer shell 1 of the movable component 3 moves upward axially relative to the center rod 210 of the stator component 2, the volume of the second accommodating chamber 132 will decrease, the volume of the first accommodating chamber 131 will increase, and the volume of the accommodating chamber 130 will decrease. Therefore, part of the coolant in the accommodating chamber 130 will flow into the first heat exchange channel 110, which will cause the first heat exchange channel to Part or even all of the gas in 110 is discharged into the first accommodating chamber 131, and since the volume change of the second accommodating chamber 132 is greater than the volume change of the first accommodating chamber 131, and since the first accommodating chamber 131 also receives part of the coolant flowing through the flow channel 4, the volume change of the first accommodating chamber 131 cannot completely accommodate the coolant and gas flowing out of the second accommodating chamber 132 due to the volume change. However, since the gas is compressible, additional space can be further provided by compressing the gas to ensure sufficient flow space for the coolant. Therefore, due to the presence of the gas, the coolant can reduce the resistance to the mover assembly 3, that is, reduce the impact on the normal movement stroke of the suspension motor, which is beneficial to the movement of the suspension motor. At the same time, by using compressed gas to achieve volume compensation of the coolant in the motor cavity, the structure is simpler and can reduce the overall volume of the motor, reduce the installation space occupied by the suspension motor, and have a higher space utilization rate.

[0072] On the contrary, when the housing 1 of the movable assembly 3 moves downward axially relative to the center rod 210 of the stator assembly 2, the volume of the second accommodating chamber 132 will increase, the volume of the first accommodating chamber 131 will decrease, and the volume of the accommodating chamber 130 will increase. Therefore, part of the coolant in the first heat exchange channel 110 will be replenished into the accommodating chamber 130. At the same time, the compressed gas in the first accommodating chamber 131 is decompressed, thereby pushing part of the coolant in the first accommodating chamber 131 to flow through the first heat exchange channel 110 to the second accommodating chamber 132, and at the same time, it can push another part of the coolant in the first accommodating chamber 131 to flow through the channel 4 to the second accommodating chamber 132, so as to improve the flow efficiency of the coolant, quickly reduce the resistance of the movable assembly 3, improve the smoothness of the axial movement of the suspension motor, and optimize the performance of the suspension motor.

[0073] In some embodiments, as shown in Figure 8, the first accommodating cavity 131 and the second accommodating cavity 132 can be connected through the flow channel 4 located between the stator assembly 2 and the movable assembly 3, that is, the flow channel 4 can be located between the stator assembly 2 and the movable assembly 3. Of course, the flow channel 4 can also pass through the stator assembly 2, and the present disclosure does not make specific limitations on this.

[0074] Optionally, in some embodiments, referring to FIG3 and FIG8 , the stator assembly 2 may include a center rod 210, a stator core 220 disposed on the center rod 210, and a stator coil 230 disposed on the stator core 220, the mover assembly 3 further includes a magnetic steel 310 disposed on the inner side wall of the housing 1, the flow channel 4 includes a first gap 410 between the stator core 220 and the magnetic steel 310 or the housing 1, and a second gap 420 between the stator coil 230 and the magnetic steel 310 or the housing 1, so that, for example, during the process of the mover assembly 3 moving from the first position to the second position relative to the stator assembly 2, the second accommodating cavity 1 Part of the coolant in 32 can flow toward the first accommodating cavity 131 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 230, the stator core 220 and the magnetic steel 310 to enable cooling. Similarly, in the process of the movable component 3 moving from the second position to the first position relative to the stator component 2, the coolant in the first accommodating cavity 131 can flow toward the second accommodating cavity 132 through the first gap 410 and the second gap 420 to enable cooling the stator coil 230, the stator core 220 and the magnetic steel 310.

[0075] In addition, it should be noted that the first heat exchange channel 110 is arranged in parallel with the flow path of the coolant through the first gap 410 and the second gap 420 of the flow channel 4, which also plays a role in diversion. In addition, the length of the first gap 410 and the second gap 420 is relatively small, so the setting of the first heat exchange channel 110 can also effectively reduce the damping force generated when the coolant flows, play a role in damping adjustment, and is beneficial to the axial movement of the suspension motor.

[0076] 8 , in the axial direction, the first gap 410 and the second gap 420 may be arranged alternately, and in the radial direction, the length b of the first gap 410 between the stator core 220 and the magnetic steel 310 is smaller than the length a of the second gap 420 between the stator coil 230 and the magnetic steel 310. It is understandable that, due to the limitation of the structural size, the length b of the first gap 410 between the stator core 220 and the magnetic steel 310 is smaller. Due to the Venturi effect, the speed of the coolant increases sharply when flowing in the first gap 410. The length b of the first gap 410 between the stator coil 20 and the magnetic steel 310 is smaller than the length a of the second gap 420 between the stator coil 230 and the magnetic steel 310. The flow velocity of the coolant in the second gap 420 also increases, but the flow velocity is smaller than the flow velocity 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 230 and the stator core 220, the flow state of the coolant is turbulent, the flow velocity is high, the convection heat transfer coefficient is large, and the cooling performance is better.

[0077] The radial direction mentioned above can refer to the left and right directions in FIG. 8 .

[0078] In addition, the magnetic steel 310 can be a permanent magnet with high magnetic properties, the stator core 220 can be composed of, for example, silicon steel sheets, and the stator coil 230 can be, for example, a three-phase winding assembly. In this way, by winding the three-phase winding assembly around the stator core 220, after energizing the stator coil 230, it is possible to achieve axial movement of the mover assembly 3 relative to the stator assembly 2 by means of electromagnetic force. Of course, the above specific embodiments are exemplary, and those skilled in the art can also adapt the design according to actual application requirements, with the purpose of enabling the mover assembly 3 to move axially relative to the stator assembly 2. The present disclosure is not limited to this.

[0079] In addition, since the design lengths of the magnetic steel 310 and the stator core 220 generally need to be adaptively designed according to the motion stroke of the suspension motor, in some embodiments, such as shown in FIG2 , the magnetic steel 310 may block the first inlet and outlet 170 and / or the second inlet and outlet 180. Therefore, in some embodiments not shown, a bypass hole may be provided on the magnetic steel 310 to allow the coolant to flow into the first heat exchange channel 110 through the bypass hole. Alternatively, the axial length of the housing 1 may be increased so that the first inlet and outlet 170 and / or the second inlet and outlet 180 can avoid the magnetic steel 310. The present disclosure is not limited to this, and its purpose is to enable the coolant and gas in the accommodating cavity 130 to be introduced into the first heat exchange channel 110. Those skilled in the art can design adaptively according to actual application requirements.

[0080] In some embodiments, referring to Figures 2, 3 and 5, the stator assembly 2 may include a center rod 210 having an axially extending channel 211, and the mover assembly 3 includes a guide rod 320, which is axially movably plugged into the center rod 210 to guide the movement of the mover assembly 3, thereby preventing the stator core 220 from easily damaging the magnet 310 due to magnetic bias force, and improving reliability.

[0081] 3 and 8 exemplarily show that the guide rod 320 can be connected to an actuator such as a fork arm 6 to perform linear motion to meet motion requirements, wherein a bearing 7 is provided between the center rod 210 and the guide rod 320 to facilitate relative sliding of the center rod 210 and the guide rod 320, and can be lubricated and cooled by a coolant, and a first seal 8 such as a sealing ring or a sealing gasket can be provided between the fork arm 6 and the housing 1 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 6, and those skilled in the art can adaptively design it according to actual application requirements, with the purpose of enabling the connection and fixation of the guide rod 320 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 320 can be smaller than the radial dimension of the center rod 210. Thus, in the axial direction along the center rod 210, the cross-sectional area of ​​the first accommodating cavity 131 corresponding to the center rod 210 position is smaller than the cross-sectional area of ​​the second accommodating cavity 132 corresponding to the guide rod 320 position. Therefore, when the movable sub-assembly 3 moves a unit distance, the volume change of the second accommodating cavity 132 is not the same as the volume change of the first accommodating cavity 131. Specifically, the volume change of the second accommodating cavity 132 is greater than the volume change of the first accommodating cavity 131.

[0083] In addition, in some embodiments, referring to Figures 3 and 5, a first end cover 240 is sealedly provided at one end of the center rod 210 away from the guide rod 320, and a wire hole 241 connected to the channel 211 is provided on the first end cover 240, so that the wiring harness passes through the above-mentioned wire hole 241, the channel 211 and the center rod 210 and is electrically connected to the stator coil 230 of the stator assembly 2, thereby meeting the wiring requirements of the suspension motor. The center rod 210 can be provided with a wiring hole for the wiring harness to pass through, and can be sealed, and the present disclosure does not make any specific restrictions 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 241, the first end cover 240 and the center rod 210. 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 airtightness between the center rod 210 and the housing 1, a second sealing member 9 such as a sealed bearing or a sealing gasket may be provided between the center rod 210 and the housing 1. This ensures a high degree of airtightness while facilitating relative sliding between the housing 1 and the center rod 210. The present disclosure is not limited thereto.

[0086] In some embodiments, as shown in FIG. 1 to FIG. 3 , the suspension motor may further include a displacement sensor 5 , which is used to measure the distance when the mover assembly 3 moves axially relative to the stator assembly 2 , thereby facilitating measurement of the motion stroke of the suspension motor.

[0087] 1 to 3 exemplarily show that the center rod 210 is movably inserted into the housing 1 along the axial direction, and the displacement sensor 5 is connected to the rod body of the center rod 210 located outside the housing 1. For example, the displacement sensor 5 can be a laser sensor and is fixedly connected to the center rod 210 through the mounting bracket 10. In this way, the laser of the laser sensor is irradiated on the top wall of the housing 1, and the internal receiver of the laser sensor receives the reflected laser signal. In this way, the displacement sensor 5 can be used to detect the position of the housing 1 relative to the center rod 210 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 5 described above is merely exemplary. Those skilled in the art may adaptively design the specific structure of the displacement sensor 5 and the mounting bracket 10 according to actual application requirements. The purpose is to enable the displacement sensor 5 to measure the distance of the mover assembly 3 relative to the stator assembly 2 when the mover assembly 3 moves axially. The present disclosure is not limited thereto.

[0089] In addition, in other embodiments not shown in the figures, the displacement sensor 5 can also be connected to the housing 1. For example, a laser sensor is installed on the housing 1, and a convex rib (not shown in the figure) can be provided on the center rod 210 accordingly. In this way, the laser of the laser sensor can be irradiated on the convex rib and the motion 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] According to a sixth aspect of the present disclosure, a suspension assembly is provided, comprising the suspension motor provided in the third or fifth aspect, adapted to be connected between a wheel and a vehicle body. This suspension assembly has all the advantages of the aforementioned suspension motors, and the present disclosure will not elaborate further here.

[0091] According to a seventh 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.

[0092] Based on the above embodiments, the present disclosure exemplarily describes the cooling process of the suspension motor provided in the fifth aspect, as follows:

[0093] 2 and 3 , the interior of the suspension motor is first vacuumed, for example. Coolant is then filled into the accommodating chamber 130 through the opening 190 , illustratively, so that the coolant covers 4 / 5 of the volume of the accommodating chamber 130 . Simultaneously, the first heat exchange channel 110 is filled with coolant to the same level as the accommodating chamber 130 . Subsequently, the remaining space within the accommodating chamber 130 and the first heat exchange channel 110 is filled with gas through the opening 190 .

[0094] When the mover assembly 3 moves axially relative to the stator assembly 2, that is, when the housing 1 of the mover assembly 3 moves upward axially relative to the center rod 210 of the stator assembly 2, the volume of the second accommodating chamber 132 decreases, and the volume of the first accommodating chamber 131 increases. Part of the coolant in the second accommodating chamber 132 flows to the first accommodating chamber 131 through the first gap 410 and the second gap 420. At this time, the coolant can directly cool the stator coil 230, the stator core 220 and the magnetic steel 310 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 accommodating chamber 132 will also flow into the first heat exchange channel 110. At this time, the coolant can be cooled by heat conduction with the heat dissipation structure 120 in the process of flowing through the first heat exchange channel 110.

[0095] As the coolant flows through the first heat exchange channel 110, part or even all of the gas in the first heat exchange channel 110 will be discharged into the first accommodating chamber 131, and as the housing 1 of the movable assembly 3 moves upward axially relative to the center rod 210 of the stator assembly 2, the volume of the first accommodating chamber 131 increases. However, since the volume change of the second accommodating chamber 132 is greater than the volume change of the first accommodating chamber 131, and since the first accommodating chamber 131 also receives part of the coolant flowing through the channel 4, the volume change of the first accommodating chamber 131 cannot completely accommodate the coolant and gas flowing out of the second accommodating chamber 132 due to the volume change. However, since the gas is compressible, additional space can be further provided by compressing the gas to ensure sufficient flow space for the coolant. Therefore, due to the presence of the gas, the coolant can reduce the resistance to the movable assembly 3, that is, reduce the impact on the normal movement stroke of the suspension motor, which is beneficial to the movement of the suspension motor. Moreover, when, for example, two parts of coolant are mixed in the first accommodating chamber 131, the coolant flowing through the first heat exchange channel 110 has a lower temperature after cooling, so it can absorb the heat of the coolant flowing through the channel 4 to the first accommodating chamber 131, thereby reducing the temperature of the mixed coolant.

[0096] On the contrary, when the movable assembly 3 moves axially relative to the stator assembly 2, that is, when the housing 1 of the movable assembly 3 moves downward axially relative to the center rod 210 of the stator assembly 2, the volume of the second accommodating chamber 132 increases, and the volume of the first accommodating chamber 131 decreases. Part of the coolant in the first accommodating chamber 131 flows to the second accommodating chamber 132 through the first gap 410 and the second gap 420. At this time, the coolant can directly cool the stator coil 230, the stator core 220 and the magnetic steel 310 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 accommodating chamber 131 will also flow into the first heat exchange channel 110. At this time, the coolant can be cooled by heat conduction with the heat dissipation structure 120 in the process of flowing through the first heat exchange channel 110.

[0097] As the coolant flows through the first heat exchange channel 110, and as the housing 1 of the mover assembly 3 moves downward axially relative to the center rod 210 of the stator assembly 2, the volume of the second accommodating chamber 132 increases. However, since the volume change of the second accommodating chamber 132 is greater than the volume change of the first accommodating chamber 131, when the mover assembly 3 moves a unit distance axially relative to the stator assembly 2, the coolant flowing out due to the volume change of the first accommodating chamber 131 cannot completely meet the volume change of the second accommodating chamber 132. Therefore, the pressure in the second accommodating chamber 132 decreases, and the coolant in the second accommodating chamber 132 flows from the first accommodating chamber 131. 1 and the first heat exchange channel 110, thereby accelerating the flow rate of the coolant, decompressing the compressed gas. This process further propels a portion of the coolant in the first accommodating chamber 131 to flow through the first heat exchange channel 110 into the second accommodating chamber 132 during the gas decompression process. Simultaneously, during the gas decompression process, another portion of the coolant in the first accommodating chamber 131 can be propelled through the channel 4 into the second accommodating chamber 132, thereby further improving the flow efficiency of the coolant, rapidly reducing the resistance of the rotor assembly 3, improving the smoothness of the axial movement of the suspension motor, and optimizing the performance of the suspension motor. Furthermore, when the two portions of coolant are mixed in the second accommodating chamber 132, the coolant flowing through the first heat exchange channel 110 is cooled to a lower temperature after cooling. Therefore, the coolant can absorb the heat of the coolant flowing through the channel 4 to the second accommodating chamber 132, thereby lowering the temperature of the mixed coolant.

[0098] 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.

[0099] 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.

[0100] 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 housing, characterized in that: The housing (1) is provided with a first heat exchange channel (110) and a heat dissipation structure (120); the first heat exchange channel (110) is connected to a receiving cavity (130) in the housing (1) for receiving a first cooling medium; the heat dissipation structure (120) is used to dissipate heat from the first cooling medium flowing through the first heat exchange channel (110).

2. The housing according to claim 1, wherein The heat dissipation structure (120) comprises a second heat exchange channel (121) provided on the housing (1), so that a second cooling medium flowing through the second heat exchange channel (121) and a first cooling medium flowing through the first heat exchange channel (110) are heat-conducted.

3. The housing according to claim 2, wherein: The housing (1) has a partition structure (140), and the first heat exchange channel (110) and the second heat exchange channel (121) are separated by the partition structure (140).

4. The housing according to claim 3, wherein: The accommodating chamber (130) includes a first accommodating chamber (131) and a second accommodating chamber (132) that are connected to each other. The first heat exchange channel (110) includes a first channel section (111). The first channel section (111) and the second heat exchange channel (121) are separated by the partition structure (140). The first channel section (111) is connected to the first accommodating chamber (131) through at least one second channel section (150), and is connected to the second accommodating chamber (132) through at least one third channel section (160).

5. The housing according to claim 4, wherein: The housing (1) is provided with a first inlet and outlet (170), the first inlet and outlet (170) being in communication with the first accommodating cavity (131), and being in communication with the first flow channel section (111) via the second flow channel section (150); The housing (1) is provided with a second inlet and outlet (180), the second inlet and outlet (180) being in communication with the second accommodating cavity (132), and being in communication with the first flow channel section (111) via the third flow channel section (160).

6. The housing according to claim 5, wherein There are multiple first inlets and outlets (170), and at least two of the first inlets and outlets (170) are symmetrically arranged about the axial direction; and / or, There are a plurality of second inlets and outlets (180), and at least two of the second inlets and outlets (180) are symmetrically arranged about the axial direction.

7. The housing according to any one of claims 2 to 6, wherein: The second heat exchange channel (121) has at least one inlet (122) and at least one outlet (123) formed on the outer wall of the shell (1).

8. The housing according to any one of claims 1 to 7, wherein: The housing (1) is provided with an opening (190) communicating with the accommodating cavity (130), and a blocking piece is detachably provided at the opening (190).

9. A stator assembly, characterized in that: The invention comprises a housing (1) according to any one of claims 1 to 8.

10. A suspension motor, characterized in that: Includes the stator assembly according to claim 9.

11. A mover assembly, characterized in that: The invention comprises a housing (1) according to any one of claims 1 to 8.

12. A suspension motor, characterized in that: include: stator assembly (2); and The movable subassembly (3) according to claim 11, the housing (1) is sleeved on the stator assembly (2), the accommodating chamber (130) is divided into a first accommodating chamber (131) and a second accommodating chamber (132) that are connected by the stator assembly (2), and the first accommodating chamber (131) and the second accommodating chamber (132) are connected by a flow channel (4) located between the stator assembly (2) and the movable subassembly (3) and / or passing through the stator assembly (2).

13. The levitation motor according to claim 12, characterized in that: When the movable component (3) moves a unit distance in the axial direction relative to the stator component (2), the volume change of the second accommodating cavity (132) is greater than the volume change of the first accommodating cavity (131), and the first cooling medium includes a cooling liquid and a gas filled in the accommodating cavity (130).

14. The levitation motor according to claim 12 or 13, characterized in that: The stator assembly (2) comprises a center rod (210), a stator core (220) arranged on the center rod (210), and a stator coil (230) arranged on the stator core (220); the mover assembly (3) further comprises a magnetic steel (310) arranged on the inner side wall of the housing (1); the flow channel (4) comprises a first gap (410) between the stator core (220) and the magnetic steel (310) or the housing (1), and a second gap (420) between the stator coil (230) and the magnetic steel (310) or the housing (1).

15. The levitation motor according to claim 14, 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).

16. The levitation motor according to any one of claims 12 to 15, characterized in that: The stator assembly (2) includes a center rod (210) having a channel (211) extending in the axial direction. The mover assembly (3) further includes a guide rod (320) which is movably plugged into the center rod (210) in the axial direction.

17. The levitation motor according to claim 16, characterized in that: An end of the center rod (210) away from the guide rod (320) is sealed with a first end cover (240), and the first end cover (240) is provided with a wire hole (241) communicating with the channel (211).

18. The levitation motor according to any one of claims 12 to 17, characterized in that: The suspension motor further comprises a displacement sensor (5), and the displacement sensor (5) is used to measure the distance when the mover assembly (3) moves axially relative to the stator assembly (2).

19. The levitation motor according to claim 18, characterized in that: The stator assembly (2) comprises a center rod (210), the center rod (210) being movably plugged into the housing (1) along the axial direction, the displacement sensor (5) being connected to a rod body of the center rod (210) located outside the housing (1), and the displacement sensor (5) being used to detect the position of the housing (1) relative to the center rod (210).

20. A suspension assembly, characterized in that: The suspension motor comprises the suspension motor according to claim 10 or any one of claims 12-19, wherein the suspension motor is suitable for being connected between the wheel and the vehicle body.

21. A vehicle, characterized in that: Including the suspension assembly as claimed in claim 20.

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