Suspension motor, suspension assembly, and vehicle

Abstract

A suspension motor, a suspension assembly, and a vehicle. The suspension motor comprises a stator assembly, a mover assembly sleeved on the stator assembly, and a volume compensator, wherein an accommodating cavity for accommodating a cooling liquid is provided in the mover assembly, and the stator assembly divides the accommodating cavity into a first chamber and a second chamber that are communicated with each other. When the mover assembly moves axially relative to the stator assembly by a unit distance, the volume change of the second chamber is greater than the volume change of the first chamber. The volume compensator comprises a liquid chamber, wherein the liquid chamber is in communication with the first chamber, so as to store a portion of the cooling liquid from the accommodating cavity or replenish the cooling liquid to the accommodating cavity when the mover assembly moves axially relative to the stator assembly.

Description

Suspension motor, suspension assembly and vehicle

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure claims priority to Chinese patent application number 202420629974.5, filed with the China Patent Office 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, when a linear motor is working, current needs to flow through the winding coil. The winding coil will generate heat when energized. Coolant can be injected into the interior of the linear motor to cool the coil, but the coolant will affect the movement stroke of the linear motor during normal use.

[0005] Summary of the Invention

[0006] The purpose of the present disclosure is to provide a suspension motor, a suspension assembly and a vehicle, so that the coolant can be cooled while reducing the impact on the movement stroke of the motor, so as to at least partially solve the above technical problems.

[0007] In order to achieve the above objectives, according to a first aspect of the present disclosure, a suspension motor is provided, comprising:

[0008] stator assembly;

[0009] a mover assembly sleeved on the stator assembly, the mover assembly being provided with a housing for accommodating coolant, the stator assembly dividing the housing into a first chamber and a second chamber that are in communication with each other, and when the mover assembly moves a unit distance in the axial direction relative to the stator assembly, a volume change of the second chamber is greater than a volume change of the first chamber; and

[0010] The volume compensator includes a liquid chamber, which is connected to the first chamber and is used to store coolant from the accommodating cavity or replenish the coolant to the accommodating cavity when the movable component moves axially relative to the stator component.

[0011] Optionally, the volume compensator comprises a compensating component for adjusting the volume of the liquid chamber.

[0012] Optionally, the compensation assembly includes a gas chamber for filling with gas and a compensation piston, and the liquid chamber and the gas chamber are separated by the compensation piston.

[0013] Optionally, the maximum volume of the liquid chamber is greater than or equal to the difference between the maximum and minimum values ​​of the sum of the volumes of the first chamber and the second chamber.

[0014] Optionally, the mover assembly includes a housing, and the volume compensator is arranged on the housing.

[0015] Optionally, the first chamber and the second chamber are connected through a flow channel, and the flow channel is located between the stator assembly and the mover assembly and / or passes through the stator assembly. The suspension motor also includes a cooling assembly, and the cooling assembly includes a heat dissipation flow path, and the heat dissipation flow path is formed in the mover assembly and / or located outside the mover assembly. The heat dissipation flow path is respectively connected to the first chamber and the second chamber.

[0016] Optionally, the cooling assembly further includes a heat dissipation portion, which is arranged on the heat dissipation flow path.

[0017] 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.

[0018] 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.

[0019] 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.

[0020] Optionally, the mover assembly is provided with a first inlet and outlet, the first inlet and outlet are in communication with the first chamber, and the first inlet and outlet are in communication with the first heat exchange channel through the first flow path;

[0021] The movable subassembly is provided with a second inlet and outlet, the second inlet and outlet are communicated with the second chamber, and the second inlet and outlet are communicated with the first heat exchange channel through the second flow path.

[0022] 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.

[0023] Optionally, the mover assembly includes a housing, and the cooler is connected to the housing.

[0024] Optionally, the stator assembly includes a center rod and a first magnetic component, the mover assembly includes a shell and a second magnetic component arranged on the shell, the first magnetic component and the second magnetic component are spaced apart, one of the first magnetic component and the second magnetic component includes a stator coil, and the other includes a magnet.

[0025] Optionally, the first magnetic member includes a stator core arranged on the center rod and a stator coil arranged on the stator core, the second magnetic member includes 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.

[0026] 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.

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

[0028] According to a third aspect of the present disclosure, a vehicle is further provided, comprising the suspension assembly as described above.

[0029] Through the above technical solution, the relative movement of the movable assembly and the stator assembly allows the coolant to circulate between the first chamber and the second chamber to cool the suspension motor. The liquid chamber of the volume compensator can temporarily store the coolant, for example, it can store the coolant from the accommodating chamber or replenish the coolant to the accommodating chamber to reduce the impact on the movement stroke of the suspension motor. In the process of the movable assembly moving axially relative to the stator assembly, the volume change of the second chamber is not the same as the volume change of the first chamber per unit distance of movement. Specifically, the volume change of the second chamber is greater than the volume change of the first chamber. As a result, the volume of the accommodating chamber will also change, so when the movable assembly moves relative to the stator assembly, the volume change of the second chamber is greater than the volume change of the first chamber. When the stator assembly moves axially, if the volume of the second chamber decreases and the volume of the first chamber increases, the coolant flows from the second chamber to the first chamber, and part of the coolant in the first chamber flows into the liquid chamber. Conversely, if the volume of the second chamber increases and the volume of the first chamber decreases, the coolant flows from the first chamber to the second chamber, and part of the coolant in the liquid chamber flows into the first chamber. In this way, the accommodating chamber can always be kept full of coolant, ensuring that the coolant continuously and effectively plays a cooling role on the suspension motor. At the same time, during the movement of the mover assembly relative to the stator assembly, due to the presence of the volume compensator, the coolant can reduce the resistance to the mover assembly, that is, reduce the impact on the normal motion stroke of the suspension motor. In addition, since the volume change of the first chamber is smaller than the volume change of the second chamber when the movable assembly moves a unit distance, when the movable assembly moves so that the volume of the first chamber increases and the volume of the second chamber decreases, the volume of the accommodating chamber decreases. Therefore, in the present disclosure, the liquid chamber of the volume compensator is connected to the first chamber, which can increase the speed at which part of the coolant in the accommodating chamber is filled into the liquid chamber due to the reduction in the volume of the accommodating chamber, so as to quickly reduce the resistance to the movable assembly and optimize the performance 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 diagram of the overall structure of a levitation motor provided in an exemplary embodiment of the present disclosure.

[0033] FIG. 2 is an internal cross-sectional view of a levitation motor provided in an exemplary embodiment of the present disclosure.

[0034] FIG3 is a schematic structural diagram of a heat dissipation portion connected to a housing provided in an exemplary embodiment of the present disclosure.

[0035] FIG4 is an enlarged schematic diagram of portion A in FIG2 . DETAILED DESCRIPTION

[0036] 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.

[0037] In this disclosure, unless otherwise specified, "inside" and "outside" refer to the inside and outside of the corresponding component's outline; "far" and "near" refer to the spatial distance of the corresponding component relative to another component. Furthermore, the terms "first," "second," and so on, used in this disclosure, are intended to distinguish one element from another and do not convey sequential or significant meanings. In the following description, unless otherwise indicated, identical numerals in different figures represent identical or similar elements.

[0038] In related technologies, linear motors can generate linear relative motion between the stator and the mover through the action of electromagnetic force. When the linear motor is working, current needs to be passed through the winding coil. The electromagnetic field formed by the winding coil after power is applied interacts with the magnetic field of the magnet to control the movement of the mover. However, the winding coil generates heat when it is powered on. When too much heat accumulates, it will burn the coil and affect the service life of the linear motor. Coolant can be injected into the interior of the linear motor to cool the coil, but the coolant will affect the movement range of the linear motor during normal use.

[0039] The following describes the levitation motor and vehicle in exemplary embodiments of the present disclosure with reference to the accompanying drawings.

[0040] According to a first aspect of the present disclosure, with reference to Figures 1 to 4, the present disclosure provides a levitation motor, comprising a stator assembly 1, a mover assembly 2 sleeved on the stator assembly 1, and a volume compensator 3. The mover assembly 2 is provided with a housing chamber 21 for accommodating coolant. The stator assembly 1 divides the housing chamber 21 into a first chamber 211 and a second chamber 212 that are connected. When the mover assembly 2 moves axially relative to the stator assembly 1 per unit distance, the volume change of the second chamber 212 is greater than the volume change of the first chamber 211. The volume compensator 3 includes a liquid chamber 31 that is connected to the first chamber 211 and is used to store coolant from the housing chamber 21 or replenish coolant to the housing chamber 21 when the mover assembly 2 moves axially relative to the stator assembly 1. It will be understood that during the axial movement of the mover assembly 2 relative to the stator assembly 1, the volumes of the first chamber 211 and the second chamber 212 will change, thereby causing coolant to flow between the first chamber 211 and the second chamber 212 to cool the levitation motor. Among them, the suspension motor may include but is not limited to a linear motor, such as a permanent magnet synchronous linear motor. The liquid chamber 31 of the volume compensator 3 can be connected to the first chamber 211 by setting a pipe. In addition, the coolant mentioned above can be cooling oil, which can be used to directly cool the heat source, and the boiling point and freezing point of the cooling oil are higher than those of the cooling water, so the operating temperature range of the cooling oil is larger than that of the cooling water. For example, in the present disclosure, insulating oil can be filled into the accommodating cavity 21 as a coolant. At the same time, during the relative movement of the mover assembly 2 and the stator assembly 1, the insulating oil can lubricate the linear motion structure, such as the sliding bearings and the guide rod 24 (which will be described in detail below) provided between the mover assembly 2 and the stator assembly 1, thereby improving its reliability and life.

[0041] Through the above technical solution, the relative movement of the movable assembly 2 and the stator assembly 1 allows the coolant to circulate between the first chamber 211 and the second chamber 212 to cool the suspension motor, and the liquid chamber 31 of the volume compensator 3 can temporarily store the coolant. For example, it can store the coolant from the accommodating chamber 21 or replenish the coolant to the accommodating chamber 21 to reduce the impact on the movement stroke of the suspension motor. In the process of the movable assembly 2 moving axially relative to the stator assembly 1, the volume change of the second chamber 212 is different from the volume change of the first chamber 211 per unit distance of movement. Specifically, the volume change of the second chamber 212 is greater than the volume change of the first chamber 211. As a result, the volume of the accommodating chamber 21 will also change. Here, the volume of the accommodating chamber 21 is the sum of the volumes of the first chamber 211, the second chamber 212, and the flow channel 4 connecting the first chamber 211 and the second chamber 212 (to be described below, the flow channel 4 includes the first gap 41 and the second gap 42). Therefore, when the movable assembly 2 moves axially relative to the stator assembly 1, if the volume of the second chamber 212 decreases and the volume of the first chamber 211 increases, the coolant flows from the second chamber 212 to the first chamber 211, and part of the coolant in the first chamber 211 flows into the liquid chamber 31. Conversely, if the volume of the second chamber 212 increases and the volume of the first chamber 211 decreases, the coolant flows from the first chamber 211 to the second chamber 212, and part of the coolant in the liquid chamber 31 flows into the first chamber 211. In this way, the accommodating chamber 21 can always be filled with coolant, ensuring that the coolant continuously and effectively cools the suspension motor. At the same time, during the movement of the movable assembly 2 relative to the stator assembly 1, due to the presence of the volume compensator 3, the coolant can reduce the resistance to the movable assembly 2, that is, reduce the impact on the normal movement stroke of the suspension motor. In addition, since the volume change of the first chamber 211 is less than the volume change of the second chamber 212 when the mover assembly 2 moves a unit distance, when the mover assembly 2 causes the volume of the first chamber 211 to increase and the volume of the second chamber 212 to decrease, the volume of the accommodating chamber 21 is reduced. Therefore, in the present disclosure, the liquid chamber 31 of the volume compensator 3 is connected to the first chamber 211, which can increase the speed of filling part of the coolant in the accommodating chamber 21 into the liquid cavity due to the reduction in the volume of the accommodating chamber 21, so as to quickly reduce the resistance to the mover assembly 2 and optimize the performance of the suspension motor.

[0042] In addition, the center rod 11 has a guide channel 14 extending in the axial direction, and the movable subassembly 2 includes a guide rod 24, which is movably inserted into the center rod 11 in the axial direction to guide the movement of the movable subassembly 2. For example, the guide rod 24 can be connected to an actuator such as a fork arm to perform linear motion to meet the movement requirements. It can be understood that the radial dimension of the guide rod 24 is smaller than the radial dimension of the center rod 11. Therefore, in the axial direction of the center rod 11, the cross-sectional area of ​​the first chamber 211 corresponding to the position of the center rod 11 is smaller than the cross-sectional area of ​​the second chamber 212 corresponding to the position of the guide rod 24. Therefore, when the movable subassembly 2 moves a unit distance, the volume change of the second chamber 212 is different from the volume change of the first chamber 211. Specifically, the volume change of the second chamber 212 is greater than the volume change of the first chamber 211.

[0043] For ease of description, the position of the movable assembly 2 relative to the stator assembly 1 when the volume of the accommodating chamber 21 is the largest is set as the first position, and the position of the movable assembly 2 relative to the stator assembly 1 when the volume of the accommodating chamber 21 is the smallest is set as the second position. For example, in the drawing direction shown in FIG2 , when the movable assembly 2 moves to the lowest position relative to the stator assembly 1, the volume of the accommodating chamber 21 is the largest. At this time, the movable assembly 2 is located in the first position relative to the stator assembly 1, and when the movable assembly 2 moves to the highest position relative to the stator assembly 1, the volume of the accommodating chamber 21 is the smallest. At this time, the movable assembly 2 is located in the second position relative to the stator assembly 1. In some embodiments, referring to FIG1 and FIG2 , the volume compensator 3 may include a compensation component 32 for adjusting the volume of the liquid chamber 31. For example, when the coolant in the first chamber 211 flows into the liquid chamber 31 or the coolant in the liquid chamber 31 flows into the first chamber 211, the volume of the liquid chamber 31 can be adaptively increased or decreased by the compensation component 32. It is understood that the compensation assembly 32 can be constructed in any suitable manner. For example, in one embodiment, the compensation assembly 32 may include a gas chamber 321 for filling with gas and a compensation piston 322. The liquid chamber 31 and the gas chamber 321 are separated by the compensation piston 322. In this way, when the movable assembly 2 moves from the first position to the second position relative to the stator assembly 1, some of the coolant in the first chamber 211 flows into the liquid chamber 31, and the compensation piston 322 moves to increase the volume of the liquid chamber 31. At this time, the volume of the gas chamber 321 decreases and the gas is compressed. When the movable assembly 2 moves from the second position to the first position relative to the stator assembly 1, some of the coolant in the liquid chamber 31 flows into the first chamber 211, decompressing the gas and pushing the compensation piston 322 to return to its original position, thereby reducing the volume of the liquid chamber 31 accordingly, and also facilitating the movement of the levitation motor to a certain extent. In addition, in some other possible embodiments not shown in the drawings, the compensation assembly 32 may also include a push plate and a spring disposed in the liquid chamber 31. In this way, when the movable assembly 2 moves from the first position to the second position relative to the stator assembly 1, part of the coolant in the first chamber 211 flows into the liquid chamber 31, and the push plate moves to increase the volume of the liquid chamber 31. At this time, the spring is compressed. When the movable assembly 2 moves from the second position to the first position relative to the stator assembly 1, part of the coolant in the liquid chamber 31 flows into the first chamber 211, and the spring rebounds and pushes the push plate to reset. Similarly, the volume of the liquid chamber 31 can be reduced accordingly and the movement of the suspension motor can be facilitated to a certain extent. The present disclosure is not limited to this.

[0044] In some embodiments, referring to Figures 1 and 2, the maximum volume of the liquid chamber 31 is greater than or equal to the difference between the maximum and minimum values ​​of the sum of the volumes of the first chamber 211 and the second chamber 212. It is understood that the volume of the flow channel 4 does not change due to the movement of the mover assembly 2 relative to the stator assembly 1. Thus, when the sum of the volumes of the first chamber 211 and the second chamber 212 is at its maximum, the mover assembly 2 is in its first position relative to the stator assembly 1, and when the sum of the volumes of the first chamber 211 and the second chamber 212 is at its minimum, the mover assembly 2 is in its second position relative to the stator assembly 1. Thus, during the movement of the mover assembly 2 from its first position to its second position relative to the stator assembly 1, the liquid chamber 31 can receive the coolant flowing in from the first chamber 211 until the mover assembly 2 moves to its second position relative to the stator assembly 1, thereby not affecting the normal motion of the suspension motor. When the mover assembly 2 is placed in the second position relative to the stator assembly 1, the volume of the liquid chamber 31 can be a pre-set maximum value, or it can be a state that has not reached the maximum value, so as to avoid liquid bursting, thereby avoiding damage to the volume compensator 3 or the suspension motor and affecting the normal use of the suspension motor. The present disclosure does not make specific restrictions on this.

[0045] In some embodiments, referring to Figures 1 and 2, the mover assembly 2 may include a housing 22, and the volume compensator 3 may be disposed on the housing 22. For example, a support structure may be provided on the housing 22 to fix the volume compensator 3, wherein the support structure may be an inherent structure of the housing 22 or a support frame externally connected to the housing 22. At the same time, a connecting plate may be provided between the housing 22 and the volume compensator 3 to improve the stability of the connection. In addition, in some other possible embodiments not shown in the accompanying drawings, the volume compensator 3 may also be provided on the stator assembly 1 so as not to affect the relative movement between the mover assembly 2 and the stator assembly 1. The present disclosure is not limited thereto.

[0046] The stator assembly 1 includes a center rod 11 and a first magnetic component 10, and the movable component 2 includes a shell 22 and a second magnetic component 20 arranged on the shell 22. The first magnetic component 10 and the second magnetic component 20 are arranged at intervals. One of the first magnetic component 10 and the second magnetic component 20 includes a stator coil 13, and the other includes a magnet 23.

[0047] The following embodiments will be specifically described as follows: the first magnetic component 10 includes a stator coil 13 , and the second magnetic component 20 includes a magnetic steel 23 .

[0048] In some embodiments, referring to Figures 1 to 4, the first chamber 211 and the second chamber 212 can be connected through a flow channel 4. The flow channel 4 can be located between the stator assembly 1 and the mover assembly 2, and / or the flow channel 4 can pass through the stator assembly 1. For example, the stator assembly 1 may include a center rod 11, a stator core 12 disposed on the center rod 11, and a stator coil 13 disposed on the stator core 12. The mover assembly 2 may include a housing 22 and a magnet 23 disposed on the inner sidewall of the housing 22. The flow channel 4 includes a first gap 41 between the stator core 12 and the magnet 23 or the housing 22, and a second gap 42 between the stator coil 13 and the magnet 23 or the housing 22. In this way, during the movement of the movable assembly 2 relative to the stator assembly 1 from the first position to the second position, the coolant in the second chamber 212 can flow toward the first chamber 211 through the first gap 41 and the second gap 42. In the process of flowing through the first gap 41 and the second gap 42, the coolant directly contacts the stator coil 13, the stator core 12 and the magnetic steel 23 to enable cooling. Similarly, during the movement of the movable assembly 2 relative to the stator assembly 1 from the second position to the first position, the coolant in the first chamber 211 can flow toward the second chamber 212 through the first gap 41 and the second gap 42 to enable cooling of the stator coil 13, the stator core 12 and the magnetic steel 23. It should be noted that in the axial direction, the first gap 41 and the second gap 42 can be arranged alternately, and in the radial direction, the length of the first gap 41 is smaller than the length of the second gap 42. It is understandable that, due to the limited structural dimensions, the radial length of the second gap 42 is relatively small. Due to the Venturi effect, the coolant's velocity increases sharply when flowing within the first gap 41. Since the radial length of the second gap 42 is greater than the radial length of the first gap 41, the coolant's flow velocity within the second gap 42 also increases, but the flow velocity is less than the flow velocity within the first gap 41. As a result, the coolant forms a vortex flow within the second gap 42. At the point where the coolant directly contacts the stator coil 13 and the stator core 12, the coolant flows in a turbulent state, with a high flow velocity, a large convective heat transfer coefficient, and excellent cooling performance. The axial direction can refer to the axial direction of the center rod 11, and the radial direction can refer to the radial direction of the center rod 11.

[0049] In some embodiments, referring to Figures 1 to 3, the suspension motor may further include a cooling assembly 5, the cooling assembly 5 including a heat dissipation flow path 51, and the heat dissipation flow path 51 may be formed in the mover assembly 2, or located outside the mover assembly 2. Of course, the heat dissipation flow path 51 may also be formed both on the mover assembly 2 and outside the mover assembly 2. The heat dissipation flow path 51 is connected to the first chamber 211 and the second chamber 212, respectively, so that the coolant can flow through the heat dissipation flow path 51 to be cooled and cooled, thereby ensuring the cooling effect on the suspension motor. For example, the heat dissipation flow path 51 may be formed inside the housing 22, so that the coolant can flow in the heat dissipation flow path 51 formed in the housing 22 to dissipate heat and cool through the housing 22. Alternatively, the heat dissipation flow path 51 may include a heat dissipation pipeline connected to the first chamber 211 and the second chamber 212, so that the coolant can flow in the heat dissipation pipeline to dissipate heat and cool down the coolant through the heat dissipation pipeline. In addition, the cooling assembly 5 may also include a heat dissipation portion 52, which is arranged on the heat dissipation flow path 51 to act on the heat dissipation flow path 51 to cool the coolant flowing inside. Specifically, the heat dissipation portion 52 may include a fan to cool the above-mentioned housing 22 or heat dissipation pipeline by air cooling. Alternatively, the heat dissipation portion 52 may include a nozzle to cool the above-mentioned housing 22 or heat dissipation pipeline by water cooling through spraying, thereby cooling the coolant. Of course, air cooling and water cooling may be used simultaneously, or any other method that can cool the heat dissipation flow path 51 may be used, and this is not specifically limited in the present disclosure. It is understandable that the heat dissipation flow path 51 is arranged in parallel with the flow path of the coolant through the first gap 41 and the second gap 42, which plays a role in diversion. In addition, the lengths of the first gap 41 and the second gap 42 are relatively small, so the provision of the heat dissipation flow path 51 can effectively reduce the damping force generated when the coolant flows, thereby playing a role in damping regulation.

[0050] In one embodiment, referring to Figures 1 to 3, the heat dissipation portion 52 may include a cooler 521, such as a shell and tube heat exchanger or a plate-fin heat exchanger, and the cooler 521 includes at least one first heat exchange channel connected to the heat dissipation channel 51. The cooler 521 can dissipate heat from the coolant flowing through the first heat exchange channel in any suitable manner, for example, air cooling can be used, such as natural wind or wind from a fan. Alternatively, water cooling can be used. For example, the cooler 521 also 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 to circulate a cooling medium. In this way, the cooling medium circulates in the second heat exchange channel to exchange heat with the first heat exchange channel, thereby being able to cool the coolant in the first heat exchange channel. The cooling medium can be cooling water, cooling oil, or other cooling media with higher thermal conductivity and higher heat capacity, but the present disclosure is not limited thereto. It is understandable that a liquid inlet and a liquid outlet for replacing the cooling medium are provided on the second heat exchange flow channel to ensure the heat exchange and cooling effect on the coolant. Among them, the cooler 521 can be set at any suitable position so as not to affect the normal movement stroke of the suspension motor. For example, the cooler 521 can be connected to the shell 22. Similar to the volume compensator 3, a support structure can be provided on the shell 22 to fix the cooler 521. The support structure can be an inherent structure of the shell 22 or a support frame externally connected to the shell 22. At the same time, a connecting plate can be provided between the shell 22 and the cooler 521 to improve the stability of the connection. In addition, in some other possible embodiments not shown in the accompanying drawings, the cooler 521 can also be provided on the stator assembly 1, which is not specifically limited in this disclosure.

[0051] In some embodiments, referring to Figures 1 to 3, the heat dissipation flow path 51 may include at least one first flow path 511 and at least one second flow path 512. One end of the first heat exchange flow path is connected to the first chamber 211 through the at least one first flow path 511, and the other end of the first heat exchange flow path is connected to the second chamber 212 through the at least one second flow path 512. In addition, the mover assembly 2 is provided with a first inlet and outlet 221 and / or a second inlet and outlet 222. The first inlet and outlet 221 is connected to the first chamber 211 and is connected to the first heat exchange flow path through the first flow path 511. The second inlet and outlet 222 is connected to the second chamber 212 and is connected to the first heat exchange flow path through the second flow path 512. The first inlet and outlet 221 and / or the second inlet and outlet 222 can be provided on the housing 22. Taking the movement of the movable assembly 2 relative to the stator assembly 1 from the first position to the second position as an example, during this process, the coolant in the second chamber 212 flows into the second flow path 512 through the second inlet and outlet 222, and then flows into the first heat exchange channel via the second flow path 512. The coolant is then cooled and dissipated by the cooling medium in the second heat exchange channel, and finally flows through the first flow path 511 and into the first chamber 211 through the first inlet and outlet 221. Simultaneously, the coolant flowing into the first chamber 211 through the first gap 41 and the second gap 42 has a relatively high flow rate, allowing for better mixing with the coolant flowing through the external first flow path 511 and the second flow path 512 and cooled by the cooler 521, thereby cooling the entire coolant. When the movable assembly 2 moves relative to the stator assembly 1 from the second position to the first position, the coolant flows in the opposite direction, which will not be further described in this disclosure.

[0052] It can be understood that in order to ensure the external flow path's function of diverting and damping the coolant, as well as the cooling efficiency of the coolant, the first flow path 511 and the second flow path 512 can be set to multiple. Similarly, the number of the first inlet and outlet 221 can be set to multiple according to the use requirements, and the multiple first inlets and outlets 221 are arranged at intervals along the circumference. The number of the second inlet and outlet 222 can be set to multiple according to the use requirements, and the multiple second inlets and outlets 222 are arranged at intervals along the circumference. The present disclosure exemplarily sets the number of the first flow path 511 and the second flow path 512, the first inlet and outlet 221 and the second inlet and outlet 222 to two, wherein the two first flow paths 511 and the corresponding first inlet and outlet 221 can be arranged symmetrically about the axis. Similarly, in order to facilitate the setting and installation of the pipeline, the two second flow paths 512 and the corresponding second inlet and outlet 222 can also be arranged symmetrically about the axis, thereby ensuring the cooling efficiency of the coolant.

[0053] According to a second aspect of the present disclosure, a suspension assembly is provided, comprising the aforementioned suspension motor 100, adapted to be connected between a wheel and a vehicle body. The suspension assembly has all the advantages of the aforementioned suspension motor 100, which are not further elaborated herein.

[0054] According to a third aspect of the present disclosure, a vehicle is provided, comprising the aforementioned suspension assembly. The vehicle exhibits all the benefits 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.

[0055] This disclosure exemplarily describes the cooling process of a levitation motor.

[0056] When the mover assembly 2 moves from the first position to the second position relative to the stator assembly 1, the coolant in the second chamber 212 can flow through the first and second gaps 41, 42 toward the first chamber 211. While flowing through the first and second gaps 41, 42, the coolant directly contacts the stator coil 13, stator core 12, and magnet 23, thereby cooling them. Simultaneously, the coolant in the second chamber 212 flows through the second inlet and outlet 222 into the second flow path 512, and then through the second flow path 512 into the first heat exchange channel. There, the coolant is cooled and dissipated by the cooling medium in the second heat exchange channel. Finally, the coolant flows through the first flow path 511 and through the first inlet and outlet 221 into the first chamber 211. The coolant mixes within the first chamber 211, thereby reducing its temperature. During this process, some of the coolant in the first chamber 211 flows into the liquid chamber 31, causing the compensating piston 322 to move, increasing the volume of the liquid chamber 31. This reduces the volume of the gas chamber 321, compressing the gas.

[0057] When the mover assembly 2 moves from the second position to the first position relative to the stator assembly 1, the coolant in the first chamber 211 can flow toward the second chamber 212 through the first gap 41 and the second gap 42, thereby cooling the stator coil 13, the stator core 12, and the magnet 23. Simultaneously, the coolant in the first chamber 211 flows into the first flow path 511 through the first inlet and outlet 221, and then flows into the first heat exchange channel via the first flow path 511. Then, under the action of the cooling medium in the second heat exchange channel, the coolant is cooled and dissipated. Finally, it flows through the second flow path 512 and flows into the second chamber 212 through the second inlet and outlet 222. The coolant is mixed in the second chamber 212 to reduce the temperature. During this process, some of the coolant in the liquid chamber 31 flows into the first chamber 211, decompressing the gas and pushing the compensation piston 322 to reset.

[0058] 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.

[0059] 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.

[0060] 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 (100), characterized in that: include: stator assembly (1); A movable subassembly (2) is sleeved on the stator subassembly (1); a housing cavity (21) for housing a cooling liquid is provided in the movable subassembly (2); the stator subassembly (1) divides the housing cavity (21) into a first chamber (211) and a second chamber (212) that are connected; when the movable subassembly (2) moves a unit distance in the axial direction relative to the stator subassembly (1), a volume change of the second chamber (212) is greater than a volume change of the first chamber (211); as well as The volume compensator (3) comprises a liquid chamber (31), wherein the liquid chamber (31) is in communication with the first chamber (211) and is used for storing cooling liquid from the accommodating chamber (21) or replenishing the cooling liquid to the accommodating chamber (21) when the movable assembly (2) moves axially relative to the stator assembly (1).

2. The levitation motor according to claim 1, characterized in that: The volume compensator (3) comprises a compensating component (32) for adjusting the volume of the liquid chamber (31).

3. The levitation motor according to claim 2, characterized in that: The compensation component (32) comprises a gas chamber (321) for filling gas and a compensation piston (322), and the liquid chamber (31) and the gas chamber (321) are separated by the compensation piston (322).

4. The suspension motor according to claim 2 or 3, characterized in that: The maximum volume of the liquid chamber (31) is greater than or equal to the difference between the maximum and minimum values ​​of the sum of the volumes of the first chamber (211) and the second chamber (212).

5. The levitation motor according to any one of claims 1 to 4, characterized in that: The mover assembly (2) comprises a housing (22), and the volume compensator (3) is arranged on the housing (22).

6. The levitation motor according to any one of claims 1 to 5, characterized in that: The first chamber (211) and the second chamber (212) are connected via a flow channel (4), the flow channel (4) being located between the stator assembly (1) and the mover assembly (2) and / or passing through the stator assembly (1). The suspension motor further comprises a cooling assembly (5), the cooling assembly (5) comprising a heat dissipation flow path (51), the heat dissipation flow path (51) being formed in the mover assembly (2) and / or located outside the mover assembly (2), and the heat dissipation flow path (51) being respectively connected to the first chamber (211) and the second chamber (212).

7. The levitation motor according to claim 6, characterized in that: The cooling assembly (5) further includes a heat dissipation portion (52), and the heat dissipation portion (52) is arranged on the heat dissipation flow path (51).

8. The levitation motor according to claim 7, characterized in that: The heat dissipation portion (52) includes a cooler (521), and the cooler (521) includes at least one first heat exchange channel connected to the heat dissipation channel (52).

9. The levitation motor according to claim 8, characterized in that: The cooler (521) 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.

10. The levitation motor according to claim 8 or 9, characterized in that: The heat dissipation flow path (51) includes at least one first flow path (511) and at least one second flow path (512), one end of the first heat exchange flow path is connected to the first chamber (211) through at least one first flow path (511), and the other end of the first heat exchange flow path is connected to the second chamber (212) through at least one second flow path (512).

11. The levitation motor according to claim 10, characterized in that: The movable subassembly (2) is provided with a first inlet and outlet (221), the first inlet and outlet (221) is in communication with the first chamber (211), and the first inlet and outlet (221) is in communication with the first heat exchange channel via the first flow path (511); The movable subassembly (2) is provided with a second inlet and outlet (222), the second inlet and outlet (222) is in communication with the second chamber (212), and the second inlet and outlet (222) is in communication with the first heat exchange channel via the second flow path (512).

12. The levitation motor according to claim 11, characterized in that: The movable subassembly (2) comprises a housing (22), and the first inlet and outlet (221) and / or the second inlet and outlet (222) are arranged on the housing (22).

13. The levitation motor according to any one of claims 8 to 12, characterized in that: The movable subassembly (2) comprises a housing (22), and the cooler (521) is connected to the housing (22).

14. The levitation motor according to any one of claims 6 to 13, characterized in that: The stator assembly (1) includes a center rod (11) and a first magnetic component (10); the mover assembly (2) includes a housing (22) and a second magnetic component (20) arranged on the housing (22); the first magnetic component (10) and the second magnetic component (20) are arranged at intervals; one of the first magnetic component (10) and the second magnetic component (20) includes a stator coil (13), and the other includes a magnetic steel (23).

15. The levitation motor according to claim 14, characterized in that: The first magnetic member (10) includes a stator core (12) arranged on the center rod (11) and a stator coil (13) arranged on the stator core (12); the second magnetic member (20) includes the magnetic steel (23); the flow channel (4) includes a first gap (41) between the stator core (12) and the magnetic steel (23) or the housing (22); and a second gap (42) between the stator coil (13) and the magnetic steel (23) or the housing (22).

16. The levitation motor according to claim 15, characterized in that: In the axial direction, the first gaps (41) and the second gaps (32) are alternately arranged, and in the radial direction, the length of the first gaps (41) is smaller than the length of the second gaps (42).

17. A suspension assembly, characterized in that: The invention comprises a suspension motor (100) according to any one of claims 1 to 16, wherein the suspension motor (100) is suitable for being connected between a wheel and a vehicle body.

18. A vehicle, characterized in that: Includes the suspension assembly described in claim 17.

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