Levitation electric motor, suspension assembly and vehicle

Abstract

A levitation electric motor, a suspension assembly and a vehicle. The levitation electric motor comprises a stator assembly, a rotor assembly and a cooling assembly, wherein the rotor assembly is sleeved on the stator assembly and is capable of moving axially relative to the stator assembly; the inside of the rotor assembly is provided with an accommodating cavity used for accommodating coolant, and the stator assembly divides the accommodating cavity into a first cavity and a second cavity, the first cavity being in communication with the second cavity through a flow channel that passes through the stator assembly; and the cooling assembly comprises a heat dissipation flow path, the heat dissipation flow path being formed on the rotor assembly and / or located outside the rotor assembly, and the heat dissipation flow path being in communication with at least one of the first cavity and the second cavity. The levitation electric motor enables the coolant to be cooled down by means of the cooling assembly, thereby improving the heat dissipation effect of the levitation electric motor.

Description

Suspension motor, suspension assembly and vehicle

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure claims priority to Chinese patent application number 202420629971.1, 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 vehicles and suspension motors, and in particular, to a suspension motor, a suspension assembly, and a vehicle. Background Art

[0004] In related technologies, a permanent magnet synchronous linear motor consists of a stator assembly and a mover assembly. Symmetrical three-phase sinusoidal current is applied to the stator assembly's winding coils. The winding coils interact with the permanent magnets on the inner wall of the mover assembly's housing to produce a traveling wave magnetic field, generating electromagnetic thrust. This in turn drives the mover assembly in linear motion relative to the stator assembly. However, during motor motion, the winding coils generate heat loss. The motor's heat dissipation performance is a key factor affecting its motion performance.

[0005] Summary of the Invention

[0006] The purpose of the present disclosure is to provide a suspension motor, a suspension assembly and a vehicle, which can cool the suspension motor by using a coolant and cool the coolant by using a cooling component, thereby improving the heat dissipation effect of the suspension motor and at least partially solving the above-mentioned technical problems.

[0007] To achieve the above-mentioned objectives, the present disclosure provides, in a first aspect, a levitation motor, comprising: a stator assembly; a mover assembly, sleeved on the stator assembly and capable of moving axially relative to the stator assembly, the mover assembly being provided with a accommodating chamber for accommodating coolant, the stator assembly dividing the accommodating chamber into a first chamber and a second chamber connected by a flow channel flowing through the stator assembly; and a cooling assembly, comprising a heat dissipation flow path, the heat dissipation flow path being formed in the mover assembly and / or located outside the mover assembly, the heat dissipation flow path being connected to at least one of the first chamber and the second chamber.

[0008] Optionally, the cooling assembly further includes a heat dissipation portion, which is arranged on the heat dissipation flow path.

[0009] Optionally, the heat dissipation portion includes a cooler, and the cooler includes at least one first heat exchange channel connected to the heat dissipation channel.

[0010] Optionally, 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 a cooling medium.

[0011] Optionally, the heat dissipation flow path includes at least one first flow path and at least one second flow path, one end of the first heat exchange flow path is connected to the first chamber through at least one first flow path, and the other end of the first heat exchange flow path is connected to the second chamber through at least one second flow path.

[0012] Optionally, the movable subassembly is provided with a first inlet and a second inlet, the first inlet and the second inlet are in communication with the first chamber, and the first inlet and the second inlet are in communication with the first heat exchange channel through the first flow path;

[0013] The second inlet and outlet are in communication with the second chamber, and the second inlet and outlet are in communication with the first heat exchange channel through the second flow path.

[0014] Optionally, a plurality of the first inlet and outlet and a plurality of the second inlet and outlet are provided, and the plurality of the first inlet and outlet and the plurality of the second inlet and outlet are arranged at intervals along the circumferential direction.

[0015] Optionally, at least two of the first inlets and outlets are symmetrically arranged about the axial direction; and / or at least two of the second inlets and outlets are symmetrically arranged about the axial direction.

[0016] Optionally, the mover assembly includes a housing, and the first inlet and outlet and / or the second inlet and outlet are arranged on the housing.

[0017] Optionally, the mover assembly includes a housing, and the cooler is connected to the housing.

[0018] Optionally, the flow channel is located between the stator assembly and the mover assembly and / or passes through the stator assembly.

[0019] Optionally, the stator assembly includes a center rod and a first magnetic member disposed on the center rod, and the mover assembly includes a housing and a second magnetic member disposed on the housing;

[0020] The flow channel is formed at least between the first magnetic member and the second magnetic member;

[0021] One of the first magnetic component and the second magnetic component includes a stator coil, and the other includes a magnetic steel.

[0022] Optionally, the first magnetic component includes a stator core arranged on the center rod and a stator coil arranged on the stator core, the second magnetic component includes a magnetic steel, and the flow channel includes a first gap between the stator core and the magnetic steel or the shell and a second gap between the stator coil and the magnetic steel or the 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 gaps is greater than the length of the second gaps.

[0024] Optionally, the suspension motor further includes a volume compensator having a liquid chamber, wherein the liquid chamber is in communication with the first chamber or the second chamber.

[0025] Optionally, the volume compensator includes a piston and the liquid chamber and the gas chamber separated by the piston.

[0026] Optionally, the stator assembly includes a center rod having a guide channel extending in the axial direction, and the mover assembly includes a guide rod that is movably inserted into the center rod in the axial direction.

[0027] According to a second aspect of the present disclosure, a suspension assembly is provided, comprising the aforementioned suspension motor, wherein the suspension motor is suitable for being connected between a vehicle body and a wheel.

[0028] A third aspect of the present disclosure provides a vehicle comprising the above-mentioned suspension assembly.

[0029] Through the above technical solution, that is, the suspension motor provided by the present disclosure, when the movable assembly moves back and forth in the axial direction relative to the stator assembly, the coolant will repeatedly flow between the first chamber and the second chamber of the accommodating cavity through the flow channel flowing through the stator assembly, and can take away the heat generated between the stator assembly and the movable assembly. At the same time, in order to further improve the cooling effect of the coolant, when the movable assembly moves relative to the stator assembly, for example, when it moves axially from the first chamber to the second chamber, a part of the coolant in the second chamber will flow to the first chamber through the flow channel, and in this process will absorb the heat generated by the suspension motor. The heat generated by the suspension motor is absorbed by the cooling channel. On the contrary, when the movable assembly moves axially along the second chamber toward the first chamber relative to the stator assembly, a portion of the coolant in the first chamber will flow to the second chamber through the flow channel, and absorb the heat generated by the suspension motor in this process, thereby achieving the purpose of cooling the suspension motor. In addition, during the operation of the suspension motor, the coolant in the first chamber or the second chamber can flow into the heat dissipation flow path to dissipate heat and cool the coolant, so as to reduce or even avoid heat accumulation of the coolant, and keep the coolant at a lower temperature to improve the cooling effect and the heat dissipation effect of the suspension motor.

[0030] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] 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.

[0032] FIG1 is a schematic structural diagram of a levitation motor provided in an exemplary embodiment of the present disclosure.

[0033] FIG2 is a schematic diagram of the bottom structure of a levitation motor provided in an exemplary embodiment of the present disclosure.

[0034] FIG. 3 is a side view of a levitation motor provided in an exemplary embodiment of the present disclosure.

[0035] FIG. 4 is a top view of a levitation motor provided in an exemplary embodiment of the present disclosure.

[0036] FIG5 is a cross-sectional view of the DD position in FIG4.

[0037] FIG6 is a cross-sectional view taken along line BB in FIG3 .

[0038] FIG7 is a partial enlarged view of position A in FIG6 . DETAILED DESCRIPTION

[0039] 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.

[0040] In the present disclosure, unless otherwise specified, directional words such as "inside" and "outside" refer to the inside and outside relative to the outline of the component or structure itself, and "first" and "second" are used to distinguish one element from another and do not have sequentiality or importance. In addition, the same figure marks in different reference drawings represent the same elements.

[0041] In a first aspect of the present disclosure, a suspension motor 100 is provided. Referring to Figures 1 to 7 , the suspension motor 100 includes a stator assembly 1, a mover assembly 2, and a cooling assembly 3. The mover assembly 2 is sleeved on the stator assembly 1 and is movable in the axial direction relative to the stator assembly 1. A accommodating chamber 10 for accommodating coolant is provided in the mover assembly 2. The stator assembly 1 divides the accommodating chamber 10 into a first chamber 201 and a second chamber 202. The first chamber 201 and the second chamber 202 are connected by a flow channel 2b flowing through the stator assembly 1. The cooling assembly 3 includes a heat dissipation flow path 20, which is formed in the mover assembly 2 and / or is located outside the mover assembly 2. The heat dissipation flow path 20 is connected to at least one of the first chamber 201 and the second chamber 202.

[0042] The suspension motor 100 may include but is not limited to a linear motor, such as a permanent magnet synchronous linear motor.

[0043] Through the above-mentioned method, that is, the suspension motor 100 provided by the present disclosure, when the movable component 2 moves back and forth in the axial direction relative to the stator component 1, the coolant will flow repeatedly between the first chamber 201 and the second chamber 202 of the accommodating chamber 10 by flowing through the flow channel 2b of the stator component 1, and can take away the heat generated between the stator component 1 and the movable component 2. At the same time, in order to further improve the cooling effect of the coolant, referring to Figure 6, when the movable component 2 moves upward relative to the stator component 1, a portion of the coolant in the second chamber 202 will flow to the first chamber 201 through the flow channel 2b, and in this process will absorb the heat generated by the suspension motor 100. Conversely, when the movable component 2 moves downward relative to the stator component 1, a portion of the coolant in the first chamber 201 will flow to the second chamber 202 through the flow channel 2b, and in this process will absorb the heat generated by the suspension motor 100, thereby achieving the purpose of cooling the suspension motor 100. In addition, during the operation of the suspension motor 100, the coolant in the first chamber 201 or the second chamber 202 can flow into the heat dissipation path 20 to dissipate heat and cool the coolant, thereby reducing or even avoiding heat accumulation in the coolant. The coolant can be kept at a low temperature to improve the cooling effect and the heat dissipation effect of the suspension motor 100.

[0044] The heat dissipation flow path 20 can be connected to the first chamber 201, or the heat dissipation flow path can be connected to the second chamber 202, or the heat dissipation flow path 20 can be connected to the first chamber 201 and the second chamber 202 respectively. Taking the heat dissipation flow path 20 being connected to the first chamber 201 and the second chamber 202 respectively as an example, referring to FIG6 , when the mover assembly 2 moves upward relative to the stator assembly 1, a portion of the coolant in the second chamber 202 will flow to the first chamber 201 through the flow channel 2b, and in this process will absorb the heat generated by the suspension motor. The other portion of the coolant will flow to the first chamber 201 through the heat dissipation flow path 20. The two portions of coolant will mix in the first chamber 201. Since the temperature of the coolant flowing through the heat dissipation flow path is lower after heat dissipation, it can absorb the heat of the coolant flowing to the first chamber 201 through the flow channel 2b, thereby reducing the temperature of the mixed coolant. Conversely, when the mover assembly 2 moves downward relative to the stator assembly 1, a portion of the coolant in the first chamber 201 will flow through the flow channel 2b to the second chamber 202, absorbing the heat generated by the suspension motor 100 in the process. Another portion of the coolant will flow through the heat dissipation flow path 20 to the second chamber 202. The two portions of coolant will mix in the second chamber 202. Since the coolant flowing through the heat dissipation flow path 20 has a lower temperature after heat dissipation, it can absorb the heat of the coolant flowing through the flow channel 2b to the second chamber 202, thereby reducing the temperature of the mixed coolant. Both of the above methods can achieve the effect of cooling the coolant, allowing the coolant to maintain a lower temperature to improve the cooling effect and the heat dissipation effect of the suspension motor 100.

[0045] In addition, in an alternative embodiment not shown in the figure, when, for example, the heat dissipation flow path 20 is connected to the first chamber 201 or the second chamber 202, a pump or the like can be provided on the heat dissipation flow path 20 to extract part of the coolant from the cooling chamber to cool the coolant, and then the coolant can be transported to the accommodating chamber 10 after cooling. Alternatively, the thrust or suction force generated when the movable component 2 moves relative to the stator component 1 can be used to realize the process of the coolant flowing from the accommodating chamber 10 into the heat dissipation flow path 20 or flowing back to the accommodating chamber 10. The present disclosure is not limited to this.

[0046] It should be noted that the heat dissipation flow path 20 can be arranged in any suitable position according to actual application requirements, and this disclosure does not specifically limit this. For example, as described in the above embodiment, the heat dissipation flow path 20 can be formed on the movable subassembly 2, such as formed on the housing 2a of the movable subassembly 2. Furthermore, a channel for coolant circulation can be provided on the housing 2a to form the above-mentioned flow channel 2b. Alternatively, it can be formed outside the movable subassembly 2, for example, by an external pipeline to allow coolant to flow back and forth between the first chamber 201 and the second chamber 202.

[0047] The coolant mentioned in the above method can be any suitable liquid, for example, cooling oil, insulating cooling water, fluorinated liquid, etc.

[0048] Furthermore, based on the above-described specific embodiments, the coolant within the levitation motor 100 can also provide a buffering effect. For example, when the levitation motor 100 is subjected to a significant external impact, the coolant within the accommodating cavity 10 of the levitation motor 100 can also provide a damping force in the form of a buffer, thereby improving the levitation motor 100's ability to resist collisions.

[0049] In some embodiments, as shown in Figures 1 to 5, the cooling assembly 3 further includes a heat dissipation portion 310, which is disposed on the heat dissipation flow path 20. In this manner, after the coolant is heated by heat exchange with the stator assembly 1 and the rotor assembly 2, the coolant can dissipate heat and cool down through the heat dissipation portion 310 on the heat dissipation flow path 20 as it flows through the heat dissipation flow path 20, thereby lowering the coolant's own temperature. Ultimately, the coolant at a lower temperature can flow back to the first chamber 201 or the second chamber 202 to mix with the coolant that has absorbed heat and flows through the flow channel 2b, thereby further improving the heat dissipation effect on the suspension motor 100. The heat dissipation portion 310 can also include any specific structure with a heat dissipation function. For example, the heat dissipation portion 310 can include specific devices such as heat dissipation fins and a cooler 311. One or more of these devices can be disposed on the heat dissipation flow path 20 to cool down the coolant at a higher temperature.

[0050] In some embodiments, as shown in Figures 1 to 5, the heat dissipation portion 310 includes a cooler 311, and the cooler 311 includes at least one first heat exchange channel connected to the heat dissipation channel 20. In this way, the first heat exchange channel can be used for cooling liquid to circulate, so as to achieve the purpose of heat dissipation and cooling, thereby improving the cooling effect of the suspension motor 100. It should be noted that the cooler 311 can adopt a cooler 311 of any suitable structure, such as an air-cooled cooler, a liquid-cooled cooler, or a cooler 311 of any other suitable structure, as long as it can cool the higher temperature coolant in the first heat exchange channel. The number of first heat exchange channels can also be one or more. When the number of first heat exchange channels is multiple, the coolant can flow through multiple first heat exchange channels at the same time, thereby increasing the heat exchange area with the cooler 311, so as to further improve the cooling effect of the coolant. The present disclosure does not specifically limit the above methods.

[0051] Furthermore, in some specific embodiments, the cooler 311 can adopt the liquid-cooled cooler mentioned in the above specific embodiments. When this embodiment is adopted, with reference to Figures 1 to 5, the cooler 311 can include at least one second heat exchange channel 320 that conducts heat with the first heat exchange channel, and the second heat exchange channel 320 is used to circulate the cooling medium. In this cooling mode, when the higher temperature coolant flows through the first heat exchange channel, it can exchange heat with the cooling medium flowing through the second heat exchange channel 320. For example, the cooling medium can absorb the heat of the coolant to cool the coolant. Thus, the temperature of the coolant in the first heat exchange channel can be reduced by liquid cooling, and the number of the second heat exchange channel 320 can also be one or more. When the number of the second heat exchange channel 320 is multiple, more external cooling medium can be circulated, thereby improving the heat exchange effect of the higher temperature coolant in the first heat exchange channel. This disclosure does not specifically limit this. In addition, the cooler 311 may be a plate cooler or a shell-and-tube cooler having a first heat exchange channel and a second heat exchange channel 320 , and the present disclosure does not make any specific limitation thereto.

[0052] To make it easier for those skilled in the art to understand the above-mentioned specific embodiments, with reference to Figures 1, 2, and 4, the second heat exchange channel 320 may include a liquid inlet 321 and a liquid outlet 322. When an external cooling medium flows through the second heat exchange channel 320, it can flow into the second heat exchange channel 320 from the liquid inlet 321 and be discharged from the liquid outlet 322. During this flow process, the cooling medium can be driven by any suitable external power source. For example, an external liquid pump can be used to drive the cooling medium through the liquid inlet 321 into the second heat exchange channel 320 and can be discharged from the liquid outlet 322. At the same time, the cooling medium can also be any suitable medium, such as water or cooling oil, etc., and this disclosure does not specifically limit this.

[0053] In some embodiments, as shown in Figures 1 to 6 , the heat dissipation flow path 20 includes at least one first flow path 301 and at least one second flow path 302. One end of the first heat exchange flow path is connected to the first chamber 201 through the at least one first flow path 301, and the other end of the first heat exchange flow path is connected to the second chamber 202 through the at least one second flow path 302. In this way, when the coolant heats up and enters the first heat exchange flow path, it can enter through the first flow path 301 or the second flow path 302. After passing through the first heat exchange flow path, the coolant can also flow into the second chamber 202 or the first chamber 201 through the second flow path 302 or the first flow path 301. It can be understood that, since the movable component 2 can reciprocate in the axial direction relative to the stator component 1 during the actual operation of the suspension motor 100, the movable component 2 will repeatedly squeeze the coolant in the first chamber 201 or the second chamber 202, that is, as shown in Figures 2 and 6, in Figure 5, when the movable component 2 moves upward relative to the stator component 1, the coolant in the second chamber 202 below will be squeezed, and as shown in Figures 2 and 6, at this time, part of the coolant will flow from the flow channel between the second chamber 202 and the first chamber 201 to the first chamber 201, and the other part of the coolant will be discharged along the second flow path 302 to the first heat exchange channel. After being cooled by the cooler, it will be discharged into the first chamber 201 from the first flow path 301 connected to the other end of the first heat exchange channel. On the contrary, in Figure 6, when the movable subassembly 2 moves downward relative to the stator subassembly 1, the coolant in the upper first chamber 201 will be squeezed, and at this time, a portion of the coolant will also flow from the flow channel between the first chamber 201 and the second chamber 202 to the second chamber 202, and the other portion of the coolant will be discharged along the first flow path 301 to the first heat exchange channel, and after being cooled by the cooler 311, it will be discharged into the second chamber 202 from the second flow path 302 connected to the other end of the first heat exchange channel. Therefore, the flow of the above-mentioned coolant does not require an external power source. It only needs to move the movable subassembly 2 up and down relative to the stator subassembly 1 to drive the coolant to flow, achieving the effect of coolant self-circulation, and thus can better provide the coolant to pass through the first heat exchange channel and be cooled.

[0054] Furthermore, in some specific embodiments, in order to improve the efficiency of coolant discharge from or input to the first chamber 201 or the second chamber 202, as well as the cooling effect on the coolant, with reference to FIG1 and FIG2 , the number of the first flow path 301 and the second flow path 302 can be two, and the two first flow paths 301 can be connected to one end of the first heat exchange channel via a tee 330, and the two second flow paths 302 can also be connected to the other end of the first heat exchange channel via another tee 330. In this way, the coolant flow can flow through the two first flow paths 301 or the two second flow paths 302 simultaneously, and merge through the tee 330 before entering the first heat exchange channel for cooling. After cooling, it can also be split through the tee 330 and flow through the two first flow paths 301 or the two second flow paths 302 again into the first chamber 201 or the second chamber 202. It should be noted that the three-way pipe 330 shown in FIG. 2 of the present disclosure is exemplary, and the number of first flow paths 301 and second flow paths 302 may be greater, for example, three, four, or more. Adaptively, the device communicating with the plurality of first flow paths 301 or the plurality of second flow paths 302 may also be a four-way pipe, a five-way pipe, or the like. The number of the plurality of first flow paths 301 and the plurality of second flow paths 302 may be the same or different, and may be arranged and combined in any suitable number, and the present disclosure does not impose any specific limitation on this.

[0055] In some embodiments, as shown in Figures 1 to 6, the movable subassembly 2 is provided with a first inlet and outlet 210 and a second inlet and outlet 220. The first inlet and outlet 210 is connected to the first chamber 201 and is connected to the first heat exchange channel via the first flow path 301; the second inlet and outlet 220 is connected to the second chamber 202 and is connected to the first heat exchange channel via the second flow path 302. In this way, the first inlet and outlet 210 and the second inlet and outlet 220 can be used for coolant to be discharged or entered, so that the coolant can flow and cool better. For example, as shown in Figures 5 and 6, when the movable subassembly 2 moves downward and squeezes the coolant in the first chamber 201, the coolant will be discharged from the first inlet and outlet 210 and discharged into the second chamber 202 from the second inlet and outlet 220 along the first flow path 301 and the second flow path 302. On the contrary, when the movable subassembly 2 moves upward and squeezes the coolant in the second chamber 202 , the coolant is discharged from the second inlet and outlet 220 and flows along the second flow path 302 and the first flow path 301 and into the first chamber 201 from the first inlet and outlet 210 .

[0056] In some embodiments, as shown in Figures 1 to 6 , there are multiple first inlet and outlet 210 and multiple second inlet and outlet 220, and the multiple first inlet and outlet 210 and multiple second inlet and outlet 220 are arranged at intervals along the circumference. In this way, when the coolant circulates between the first chamber 201 and the second chamber 202, it can flow through the multiple first inlet and outlet 210 and the multiple second inlet and outlet 220 in the first chamber 201 and the second chamber 202. In this way, the flow rate of the coolant can be increased. That is, as shown in Figure 2 , in the embodiment given in Figure 2 , there are two first inlet and outlet 210 and the second inlet and outlet 220, and they are arranged symmetrically about the axis of the suspension motor. In this way, while increasing the flow rate of the coolant, it can also ensure that the heat exchange of the coolant is more uniform when it flows between the first chamber 201 and the second chamber 202.

[0057] Furthermore, in the aforementioned specific embodiment, to further increase the cooling liquid flow rate between the first chamber 201 and the second chamber 202 and enhance the heat exchange effect, the number of first inlet and outlet 210 and second inlet and outlet 220 is not limited to two as in the aforementioned specific embodiment. Specifically, the number of first inlet and outlet 210 and second inlet and outlet 220 in Figures 1 to 6 is exemplary, and the number of first inlet and outlet 210 and second inlet and outlet 220 can also be any suitable number greater than two, such as three, four, or more. Furthermore, a single first flow path 301 can be connected to a single first inlet and outlet 210, and a single second flow path 302 can be connected to a single second inlet and outlet 220. This is not specifically limited in the present disclosure.

[0058] In other embodiments, the number of the first inlet and outlet 210 and the second inlet and outlet 220 may be one.

[0059] In the above-mentioned specific embodiment, the arrangement positions of the first inlet and outlet 210 and the second inlet and outlet 220 on the suspension motor can be arbitrarily appropriate. For example, referring to Figures 1 to 6, when the number of the first inlet and outlet 210 is at least two, the at least two first inlet and outlet 210 are arranged symmetrically about the axis; and / or, when the number of the second inlet and outlet 220 is at least two, the at least two second inlet and outlet 220 are also arranged symmetrically about the axis. In this way, when the coolant enters the first chamber 201 through the two first inlet and outlet 210, the two first inlet and outlet 210 that are symmetrical about the axis can discharge the coolant more evenly into the first chamber 201, thereby improving the heat exchange effect. Similarly, when the coolant enters the second chamber 202 through the two second inlet and outlet 220, the two second inlet and outlet 220 that are symmetrical about the axis can also discharge the coolant more evenly into the second chamber 202, thereby improving the heat exchange effect.

[0060] In some embodiments, as shown in Figures 1 to 7 , the mover assembly 2 includes a housing 2a, with a first inlet and outlet 210 and / or a second inlet and outlet 220 disposed on the housing 2a. By disposing the first inlet and outlet 210 and / or the second inlet and outlet 220 on the housing 2a, external piping can be used to connect the first inlet and outlet 210 and the second inlet and outlet 220. Specifically, referring to Figures 1 to 7 , the first flow path 301 and the second flow path 302 are each configured as a pipeline, which can allow coolant to flow, facilitating manufacturing, assembly, disassembly, and maintenance.

[0061] In some embodiments, the housing 2a included in the mover assembly 2 can also be connected to a cooler. For example, as shown in Figures 1 to 5, the cooler is connected to the housing 2a. Furthermore, the housing 2a can be provided with a mounting platform 240 for mounting the cooler. In this way, connecting the cooler to the housing 2a can further reduce the occupied space of the suspension motor and achieve a higher level of integration. As shown in Figure 1, the cooler 311 can be mounted on the mounting platform 240, which can further stably connect the cooler 311 to the housing 2a to better cool the coolant.

[0062] In some embodiments, as shown in Figures 6 and 7, the flow channel 2b is located between the stator assembly 1 and the mover assembly 2 and / or passes through the stator assembly 1. In this way, when the coolant cools the stator assembly 1 and the mover assembly 2, the heat generated between the stator assembly 1 and the mover assembly 2 can be cooled by flowing through the flow channel 2b. In the suspension motor 100, the stator assembly 1 is usually a heat source. The flow channel 2b is set on the stator assembly 1 to cool the heat from the source, and / or, the flow channel 2b is set between the stator assembly 1 and the mover assembly 2 to cool the stator assembly 1 and the mover assembly 2 at the same time, thereby achieving a better cooling effect. It should be noted that the flow channel 2b can adopt any one of the above methods, or both of the above methods at the same time, and the present disclosure does not make specific limitations on this.

[0063] In some embodiments, the stator assembly 1 includes a center rod 110 and a first magnetic member 140 disposed on the center rod 110. The mover assembly includes a housing 2a and a second magnetic member 150 disposed on the housing 2a. The flow channel 2b is formed at least between the first magnetic member 140 and the second magnetic member 150. One of the first magnetic member 140 and the second magnetic member 150 includes a stator coil 130, and the other includes a magnetic steel 230.

[0064] The following description will be made in detail assuming that the first magnetic component 140 includes the stator coil 130 and the second magnetic component 150 includes the magnetic steel 230 .

[0065] In some embodiments, as shown in Figures 5 to 7 , the first magnetic member 140 includes a stator core 120 disposed on the center rod 110 and a stator coil 130 disposed on the stator core 120. The second magnetic member 150 includes a magnetic steel 230. The flow channel 2b includes a first gap 2b1 between the stator core 120 and the magnetic steel 230 or the housing 2a, and a second gap 2b2 between the stator coil 130 and the magnetic steel 230 or the housing 2a. In this manner, when the mover assembly 2 moves up and down relative to the stator assembly 1, the stator core 120 and the stator coil 130 also move up and down relative to the mover assembly 2. In the levitation motor 100, the stator coil 130 generates a large amount of heat, which is transferred to the stator core 120 for heat conduction. In this operating state, when the coolant flows through the first gap 2b1 and the second gap 2b2, forced convection can effectively remove heat from the stator core 120, the stator coil 130, and the magnet 230. The heat can also be dissipated into the environment through the cooler 311, thereby improving the heat dissipation effect of the levitation motor 100.

[0066] It should be noted that the principle of the reciprocating motion of the movable component 2 relative to the stator component 1 is that the stator coil 130 is energized by an external power supply. The excitation magnetic field of the magnet 230 on the shell 2a interacts with the traveling wave magnetic field generated by the stator coil 130, which will generate electromagnetic thrust. The electromagnetic thrust can drive the movable component 2 to reciprocate relative to the stator component 1.

[0067] In some embodiments, as shown in Figures 6 and 7 , the first gaps 2b1 and second gaps 2b2 are arranged alternately in the axial direction, and in the radial direction, the length of the first gaps 2b1 is greater than the length of the second gaps 2b2. The axial direction can refer to the axial direction of the center rod 110, such as the vertical direction in Figures 6 or 7 ; the radial direction can refer to the radial direction of the center rod 110, such as the horizontal direction in Figures 6 or 7 . This approach can increase the intensity of forced convection of the coolant in the first gaps 2b1 and second gaps 2b2, thereby improving the cooling effect. That is, referring to Figure 7, in the example given in the figure, it can be clearly seen that the stator core 120 is closer to the inner wall of the shell 2a, the length of the second gap 2b2 is smaller, the stator coil 130 is farther from the inner wall of the shell 2a, and the length of the first gap 2b1 is longer. Under this arrangement, when the coolant passes through multiple first gaps 2b1 and multiple second gaps 2b2 alternately in sequence, the coolant can generate a turbulent effect when flowing through the flow channel 2b, and generate an eddy effect when flowing through the first gap 2b1, thereby enhancing the effect of convective heat transfer, taking away more heat, and thus forming a better cooling effect for the suspension motor.

[0068] Furthermore, the arrangement of the flow channel 2b can be any suitable arrangement. For example, the flow channel 2b can form an annular gap between the stator core 120, the stator coil 130, and the magnetic steel 230. When the annular gap is small, the externally provided first flow path 301 and second flow path 302 can effectively reduce the damping force generated by the flow of the coolant, thereby providing a damping adjustment function and also dissipating heat from the coolant.

[0069] In some embodiments, as shown in Figures 1 to 5, the levitation motor 100 further includes a volume compensator 4, which has a liquid chamber 410. The liquid chamber 410 is connected to the first chamber 201 or the second chamber 202, so as to store coolant from the accommodating chamber 10 or replenish coolant to the accommodating chamber 10 when the mover assembly 2 moves axially relative to the stator assembly 1. Under this arrangement, when the mover assembly 2 moves relative to the stator assembly 1, due to the presence of the volume compensator 4, the coolant can be prevented from being compressed and expanded during the movement of the shell, that is, the impact on the normal movement stroke of the levitation motor is reduced.

[0070] As shown in FIG5 , the volume compensator 4 includes a piston 401 and a liquid chamber 410 and an air chamber 420 separated by the piston 401. In this way, as the mover assembly 2 reciprocates relative to the stator assembly 1, the volume of the accommodating chamber 10 is constantly changing. That is, when the mover assembly 2 moves upward relative to the stator assembly 1, the overall volume of the accommodating chamber 10 decreases. At this time, the total volume of the first chamber 201 and the second chamber 202 is insufficient to store a fixed volume of coolant. The excess coolant will flow from the first chamber 201 or the second chamber 202 into the liquid chamber 410 of the volume compensator 4 to store this excess coolant. Before the levitation motor 100 is operated, the air chamber 420 can be filled with gas at a specified pressure through an external inflation device to adaptively increase or decrease the volume of the liquid chamber 410 through the air chamber 420.

[0071] It should be noted that when the mover assembly 2 moves a unit distance axially relative to the stator assembly 1, the volume change of the second chamber 202 is greater than the volume change of the first chamber 201. For example, when the mover assembly 2 moves upward relative to the stator assembly 1, the volume of the first chamber 201 increases, while the volume of the second chamber 202 decreases, and the overall volume of the accommodating chamber 10 decreases. In this case, the volume compensator 4 can increase the speed at which a portion of the coolant in the accommodating chamber 10 is filled into the liquid chamber 410 due to the decrease in the volume of the accommodating chamber 10, thereby quickly reducing the resistance to the mover assembly 2 and optimizing the performance of the levitation motor.

[0072] In order to facilitate those skilled in the art to understand the reasons for the volume changes in the accommodating chamber 10 mentioned in the above specific embodiments, the present disclosure uses an embodiment for specific explanation: for example, reference can be made to Figure 5, from which it can be clearly seen that the diameter of the guide rod 2c (which will be described in detail below) is smaller than the diameter of the center rod 110, so the cross-sectional area of ​​the first chamber 201 is smaller than the cross-sectional area of ​​the position corresponding to the center rod 110 in the second chamber 202. Therefore, when the mover assembly 2 moves a unit distance relative to the stator assembly 1, the volume change of the second chamber 202 is greater than the volume change of the first chamber 201. Therefore, the use of the volume compensator 4 can not only accelerate the flow rate of the coolant and reduce the resistance to the mover assembly 2, but also prevent the phenomenon of liquid bursting in the suspended motor.

[0073] In some embodiments, as shown in Figures 5 and 6 , the center rod 110 has a guide channel extending axially, and the mover assembly 2 includes a guide rod 2c that is axially movably plugged into the center rod 110. In this way, when the mover assembly 2 reciprocates relative to the stator assembly 1, the guide rod 2c can guide the center rod 110, thereby allowing the housing 2a of the mover assembly 2 to always reciprocate along the axis of the guide rod 2c, thereby improving the stability of the levitation motor during operation.

[0074] A second aspect of the present disclosure provides a suspension assembly, including a suspension motor 100 , and having all the beneficial effects of the suspension motor 100 in the above-mentioned specific embodiment, wherein the suspension motor 100 can be adapted to be connected between the body and wheels of the suspension assembly.

[0075] A third aspect of the present disclosure provides a vehicle comprising the above-mentioned suspension assembly and having the beneficial effects of the suspension assembly in the above-mentioned specific embodiment, wherein the vehicle may be a pure electric vehicle, a plug-in hybrid electric vehicle, an extended-range electric vehicle or a fuel vehicle, etc., and the present disclosure does not make specific limitations on this.

[0076] The present disclosure exemplarily describes the specific working process of the suspension motor. The following describes the two different directions of reciprocating movement of the mover assembly 2 relative to the stator assembly 1 separately, for example, including the following steps:

[0077] Referring to Figure 6 , the mover assembly 2 moves upward relative to the stator assembly 1: When the stator coil 130 is energized, the electromagnetic thrust generated by the stator core 120 and the magnets 230 on the inner wall of the housing 2a causes the mover assembly 2 to move upward relative to the stator assembly 1. During this movement, a portion of the coolant flows from the gap between the mover assembly 2 and the stator assembly 1, that is, from the second chamber 202 through the flow channel 2b into the first chamber 201. During this movement, the alternating first gaps 2b1 and second gaps 2b2 force convection of the coolant in the flow channel 2b, absorbing the heat generated by the stator coil 130 and the magnets 230 before entering the first chamber 201.

[0078] The other portion of the coolant can be discharged from the second inlet and outlet 220, enter the two second flow paths 302, and enter the first heat exchange channel through one of the three-way pipes 330, where it undergoes heat exchange with the cooling medium flowing through the second heat exchange channel 320 to reduce its temperature. After cooling, the coolant can flow out from the other end of the first heat exchange channel, flow through another three-way pipe 330 to the first flow path 301, and enter the first chamber 201 through the first inlet and outlet 210. At this time, the two portions of coolant merge, and the lower-temperature coolant can be mixed and cooled with the higher-temperature coolant passing through channel 2b, thereby maintaining the coolant at a lower temperature.

[0079] In the above process, when the mover assembly 2 moves axially upward relative to the stator assembly 1, the total volume in the accommodating chamber will continue to decrease. At this time, a part of the coolant will enter the liquid chamber 410 of the volume compensator 4 from the second chamber 202 for temporary storage, and the piston 401 will also move upward and compress the gas in the air chamber 420.

[0080] Referring to Figure 6, the mover assembly 2 moves downward relative to the stator assembly 1: the stator coil 130 is energized, and the stator core 120 and the magnet 230 on the inner wall of the shell 2a interact with the electromagnetic thrust, so that the mover assembly 2 can move downward relative to the stator assembly 1. During the movement, a portion of the coolant will pass through the gap between the mover assembly 2 and the stator assembly 1, that is, the coolant will enter the second chamber 202 from the first chamber 201 through the flow channel 2b. During this movement, the alternating first gaps 2b1 and second gaps 2b2 will force the coolant to convect at the flow channel 2b, and after absorbing the heat generated by the stator coil 130 and the magnet 230, it will first enter the second chamber 202.

[0081] The other part of the coolant can be discharged from the first inlet and outlet 210, enter the two first flow paths 301, and enter the first heat exchange channel through one of the three-way pipes 330, and be discharged into the external cooling medium through the liquid inlet 321 of the cooler 311, and then pass through the second heat exchange channel 320 to exchange heat with the coolant with a higher temperature in the first heat exchange channel for cooling, and then be discharged from the liquid outlet 322. At this time, after the coolant has been cooled, it can flow out from the other end of the first heat exchange channel, and flow to the second flow path 302 through another three-way pipe 330, and enter the second chamber 202 through the second inlet and outlet 220. At this time, the two parts of the coolant are merged, and the coolant with a lower temperature can neutralize and cool the coolant with a higher temperature passing through the channel 2b, thereby keeping the coolant at a lower temperature.

[0082] In the above process, when the mover assembly 2 moves axially downward relative to the stator assembly 1, the total volume in the accommodating chamber 10 will continue to increase. At this time, a part of the coolant will also flow out of the liquid chamber 410 of the volume compensator 4 and enter the second chamber 202. The piston 401 will also move downward under the action of the compressed gas in the air chamber 420, and push the coolant in the liquid chamber 410 to be discharged into the second chamber 202.

[0083] 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.

[0084] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0085] 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 movable subassembly (2) is sleeved on the stator subassembly (1) and is movable in an axial direction relative to the stator subassembly (1); a housing cavity (10) for housing a coolant is provided in the movable subassembly (2); the stator subassembly (1) divides the housing cavity (10) into a first chamber (201) and a second chamber (202); the first chamber (201) and the second chamber (202) are connected via a flow channel (2b) flowing through the stator subassembly (1); and A cooling assembly (3) includes a heat dissipation flow path (20), wherein the heat dissipation flow path (20) is formed in the movable assembly (2) and / or is located outside the movable assembly (2), and the heat dissipation flow path (20) is connected to at least one of the first chamber (201) and the second chamber (202).

2. The levitation motor according to claim 1, characterized in that: The cooling assembly (3) further includes a heat dissipation portion (310), and the heat dissipation portion (310) is arranged on the heat dissipation flow path (20).

3. The levitation motor according to claim 2, characterized in that: The heat dissipation portion (310) includes a cooler (311), and the cooler (311) includes at least one first heat exchange channel connected to the heat dissipation channel (20).

4. The levitation motor according to claim 3, characterized in that: The cooler (311) includes at least one second heat exchange channel (320) that conducts heat with the first heat exchange channel, and the at least one second heat exchange channel (320) is used for circulating a cooling medium.

5. The levitation motor according to claim 3 or 4, characterized in that: The heat dissipation flow path (20) includes at least one first flow path (301) and at least one second flow path (302), one end of the first heat exchange flow path is connected to the first chamber (201) through at least one first flow path (301), and the other end of the first heat exchange flow path is connected to the second chamber (202) through at least one second flow path (302).

6. The levitation motor according to claim 5, characterized in that: The movable subassembly (2) is provided with a first inlet and outlet (210) and a second inlet and outlet (220), the first inlet and outlet (210) being in communication with the first chamber (201), and the first inlet and outlet (210) being in communication with the first heat exchange channel via the first flow path (301); The second inlet and outlet (220) is in communication with the second chamber (202), and the second inlet and outlet (202) is in communication with the first heat exchange channel via the second flow path (302).

7. The levitation motor according to claim 6, characterized in that: There are multiple first inlets and outlets (210) and multiple second inlets and outlets (220), and the multiple first inlets and outlets (210) and the multiple second inlets and outlets (220) are arranged at intervals along the circumferential direction.

8. The levitation motor according to claim 7, characterized in that: At least two of the first inlets and outlets (210) are symmetrically arranged about the axial direction; and / or, At least two of the second inlets and outlets (220) are symmetrically arranged about the axial direction.

9. The levitation motor according to any one of claims 6 to 8, characterized in that: The movable subassembly (2) comprises a housing (2a), and the first inlet and outlet (210) and / or the second inlet and outlet (220) are arranged on the housing (2a).

10. The levitation motor according to any one of claims 3 to 8, characterized in that: The movable subassembly (2) comprises a housing (2a), and the cooler (311) is connected to the housing (2a).

11. The levitation motor according to any one of claims 1 to 10, characterized in that: The flow channel (2b) is located between the stator assembly (1) and the mover assembly (2) and / or passes through the stator assembly (1).

12. The levitation motor according to any one of claims 1 to 11, characterized in that: The stator assembly (1) comprises a center rod (110) and a first magnetic member (140) disposed on the center rod (110); the mover assembly (2) comprises a housing (2a) and a second magnetic member (150) disposed on the housing (2a); The flow channel (2b) is formed at least between the first magnetic member (140) and the second magnetic member (150); One of the first magnetic component (140) and the second magnetic component (150) includes a stator coil (130), and the other includes a magnetic steel (230).

13. The levitation motor according to claim 12, characterized in that: The first magnetic member (140) 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 (150) includes a magnetic steel (230); the flow channel (2b) includes a first gap (2b1) and a second gap (2b2); the first gap (2b1) is located between the stator core (120) and the magnetic steel (230) or the housing (2a); and the second gap (2b2) ​​is located between the stator coil (130) and the magnetic steel (230) or the housing (2a).

14. The levitation motor according to claim 13, characterized in that: In the axial direction, the first gaps (2b1) and the second gaps (2b2) ​​are alternately arranged, and in the radial direction, the length of the first gaps (2b1) is greater than the length of the second gaps (2b2).

15. The levitation motor according to any one of claims 1 to 14, characterized in that: The levitation motor further comprises a volume compensator (4), wherein the volume compensator (4) has a liquid chamber (410), and the liquid chamber (410) is in communication with the first chamber (201) or the second chamber (202).

16. The levitation motor according to claim 15, characterized in that: The volume compensator (4) includes a piston (401) and the liquid chamber (410) and the air chamber (420) separated by the piston (401).

17. The levitation motor according to any one of claims 1 to 16, characterized in that: The stator assembly (1) includes a center rod (110) having a guide channel (160) extending in the axial direction; the mover assembly (2) includes a guide rod (2c) movably plugged into the center rod (110) in the axial direction.

18. A suspension assembly, characterized in that: The suspension assembly comprises the suspension motor (100) according to any one of claims 1 to 17, and the suspension motor (100) is suitable for being connected between a vehicle body and a wheel.

19. A vehicle, characterized in that: Includes the suspension assembly as claimed in claim 18.

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