Linear motor, suspension system and vehicle

Abstract

The utility model discloses a linear motor, a suspension system and a vehicle, the linear motor comprises a stator assembly, a cooling cavity is arranged in the stator assembly, the stator assembly comprises a cooling assembly, the cooling assembly comprises a mounting part, a liquid inlet channel and a liquid outlet channel, the mounting part is arranged in the cooling cavity, and the liquid outlet channel is arranged in the cooling cavity. A first space is formed between the peripheral wall of the mounting part and the inner wall of the cooling cavity, and the liquid inlet channel and the liquid outlet channel communicate with the first space. According to the linear motor provided by the embodiment of the utility model, the cooling assembly is arranged to cool the stator assembly, the working performance of the linear motor can be ensured, and the service life of the linear motor is prolonged.

Description

[0001] Cross-references to related applications

[0002] This application is based on and claims priority to Chinese Patent Application No. 202311872148X, filed on December 29, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This utility model relates to the field of vehicle technology, and in particular to a linear motor, a suspension system, and a vehicle. Background Technology

[0004] The suspension system, which is mainly connected between the vehicle's wheels and body, can control the relative movement of the mover assembly and stator assembly within a certain period of time according to road conditions, thereby suppressing body vibration, ensuring vehicle stability, and improving vehicle comfort.

[0005] During the relative motion between the mover assembly and the stator assembly, both generate heat. However, existing technologies lack structures for actively cooling the mover assembly and stator assembly. This prevents the linear motor from operating under high current conditions, resulting in lower peak and rated thrust outputs, which affects the motor's performance. Furthermore, the lack of active cooling for the mover assembly and stator assembly can cause the internal temperature of the linear motor to exceed limits, leading to phenomena such as high-temperature demagnetization of permanent magnets and winding burnout. This significantly reduces the reliability and durability of the linear motor and shortens its service life. Utility Model Content

[0006] This utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the first objective of this utility model is to provide a linear motor in which a cooling component is integrated within the stator assembly. This cooling component can cool the stator assembly itself, thereby cooling the linear motor, ensuring its working performance, and extending its service life. This solves the technical problem in the prior art where the lack of an active cooling structure for the stator assembly leads to reduced performance and significantly shortened service life.

[0007] The second objective of this invention is to provide a suspension system having the aforementioned linear motor.

[0008] The third objective of this invention is to provide a vehicle having the aforementioned suspension system.

[0009] According to an embodiment of the present invention, the linear motor includes a stator assembly, the stator assembly having a cooling cavity, the stator assembly including a cooling component, the cooling component including a mounting part, a liquid inlet channel and a liquid outlet channel, the mounting part being disposed within the cooling cavity, a first space being provided between the outer peripheral wall of the mounting part and the inner wall of the cooling cavity, the liquid inlet channel and the liquid outlet channel being respectively connected to the first space.

[0010] According to the embodiments of the present invention, a linear motor is provided with a cooling component, and the mounting part of the cooling component is located in the cooling cavity, so as to achieve the purpose of cooling the stator assembly, thereby cooling down the linear motor, ensuring the working performance of the linear motor, improving the reliability and durability of the linear motor, and extending the service life of the linear motor.

[0011] In some embodiments, the cooling assembly further includes a flow guide, which is disposed on the outside of the mounting portion, and a flow guide groove is provided between the flow guide and the mounting portion, and the liquid inlet channel communicates with the flow guide groove.

[0012] In some embodiments, the end of the liquid inlet channel extends into the guide groove.

[0013] In some embodiments, the cooling assembly further includes a first manifold, the first manifold having a plurality of spaced-apart branch ports, the plurality of branch ports being respectively connected to the guide channel, and the end of the liquid inlet channel being connected to the first manifold.

[0014] In some embodiments, the guide groove is disposed around the outer peripheral wall of the mounting portion.

[0015] In some embodiments, the cooling assembly further includes a second manifold, which is connected to the end of the liquid outlet channel, and the second manifold has a plurality of spaced-apart manifolds.

[0016] In some embodiments, the inner peripheral wall of the cooling chamber is provided with a positioning groove, and a portion of the mounting portion extends into the positioning groove.

[0017] In some embodiments, the mounting portion includes a positioning boss, a portion of which extends into the positioning groove.

[0018] In some embodiments, the cooling assembly further includes a storage tank and a circulation pump. The storage tank is filled with coolant and is connected to the inlet channel and the outlet channel, respectively. The circulation pump is used to drive the coolant to circulate between the storage tank and the first space.

[0019] In some embodiments, the linear motor further includes a mover assembly coupled to the stator assembly, the mover assembly being provided with a guide rod; and the mounting portion having a guide cavity that moves in coordination with the guide rod.

[0020] In some embodiments, the linear motor further includes a bearing disposed in the cooling cavity and fitted over the guide rod.

[0021] In some embodiments, the inlet channel and the outlet channel are spaced apart.

[0022] In some embodiments, the inlet channel and the outlet channel are nested.

[0023] The suspension system according to an embodiment of the present invention includes the aforementioned linear motor.

[0024] The suspension system according to the present invention employs the aforementioned linear motor to ensure the working performance of the suspension system, reduce the temperature of the suspension system during operation, and extend the service life of the suspension system.

[0025] The vehicle according to an embodiment of the present invention includes the aforementioned suspension system.

[0026] The vehicle according to the present invention, by adopting the aforementioned suspension system, can effectively improve the smoothness of vehicle driving and ensure the driving experience.

[0027] Additional aspects and advantages of this invention will become apparent from the description which follows, or may be learned by practice of this invention. Attached Figure Description

[0028] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0029] Figure 1 This is a schematic diagram of a linear motor according to some embodiments of the first aspect of this utility model.

[0030] Figure 2 for Figure 1 A sectional view along line AA.

[0031] Figure 3 for Figure 2 A magnified view of a portion of region I.

[0032] Figure 4 for Figure 3 A magnified view of a portion of region II in the middle.

[0033] Figure 5 This is a schematic diagram of the cooling assembly and guide rod in cooperation with some embodiments of the first aspect of this utility model.

[0034] Figure 6 This is a cross-sectional view of a cooling assembly according to some embodiments of the first aspect of this utility model.

[0035] Figure 7 This is a cross-sectional view of a cooling assembly according to some embodiments of the first aspect of this utility model from another angle.

[0036] Figure 8 This is a schematic diagram of a linear motor according to some embodiments of the second aspect of this utility model.

[0037] Figure 9 for Figure 8 Sectional view along line BB.

[0038] Figure 10 for Figure 9 A magnified view of a portion of region III.

[0039] Figure 11 This is a schematic diagram of a linear motor according to some embodiments of the third aspect of this utility model.

[0040] Figure 12 for Figure 11 A sectional view along line CC.

[0041] Figure label:

[0042] 1000, Linear Motor;

[0043] 100. Stator assembly;

[0044] 110. Install the base;

[0045] 111. Cooling chamber; 1111. Positioning groove;

[0046] 112. Mounting slot;

[0047] 120. Coil winding;

[0048] 130. Cooling components;

[0049] 131. Mounting part; 1311. Guide cavity; 1312. Positioning boss;

[0050] 132. Liquid inlet channel;

[0051] 133. Liquid outlet channel;

[0052] 134. Flow guide; 1341. Flow guide channel; 1342. Liquid outlet;

[0053] 135. First manifold; 1351. Diverter port;

[0054] 136. Second manifold cavity; 1361. Manifold opening;

[0055] 140. First Space;

[0056] 150. Sealing ring;

[0057] 200. Guide rod;

[0058] 300. Bearings. Detailed Implementation

[0059] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0060] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0061] The linear motor 1000 of this utility model is described below with reference to the accompanying drawings.

[0062] The linear motor 1000 includes a stator assembly 100, which has a cooling chamber 111 and a cooling component 130.

[0063] Combination Figure 1 and Figure 2 As shown, the cooling assembly 130 includes a mounting portion 131, a liquid inlet channel 132, and a liquid outlet channel 133. The mounting portion 131 is disposed within the cooling chamber 111. A first space 140 is provided between the outer peripheral wall of the mounting portion 131 and the inner wall of the cooling chamber 111. The liquid inlet channel 132 and the liquid outlet channel 133 are respectively connected to the first space 140. In this way, the liquid inlet channel 132 can introduce coolant into the first space 140. Since the first space 140 is located between the outer peripheral wall of the mounting portion 131 and the inner wall of the cooling chamber 111, the coolant in the first space 140 can be used to cool and dissipate heat on the inner wall of the cooling chamber 111, thereby achieving the purpose of cooling and dissipating heat on the stator assembly 100, and thus maintaining the temperature of the stator assembly 100 within a suitable temperature range.

[0064] Meanwhile, an outlet channel 133 is provided and is also configured to communicate with the first space 140. Since the coolant in the first space 140 increases its own temperature after cooling and dissipating heat on the inner wall of the cooling chamber 111, the outlet channel 133 can be used to discharge the coolant with a higher temperature after heat exchange, so that new coolant with a suitable temperature can be introduced into the first space 140 through the inlet channel 132. This ensures that the temperature of the coolant in the first space 140 can always be maintained within a suitable range, thus guaranteeing the cooling performance of the cooling component 130.

[0065] It is worth noting that this application places the first space 140 between the outer peripheral wall of the mounting part 131 and the inner wall of the cooling cavity 111, so that the coolant can directly contact the inner surface of the stator assembly 100, thereby ensuring the heat exchange effect between the coolant and the stator assembly 100, ensuring that the coolant can quickly remove the heat on the stator assembly 100, and ensuring that the stator assembly 100 operates within the normal temperature range.

[0066] In some embodiments, the outer peripheral wall of the mounting portion 131 and the inner wall of the cooling cavity 111 are spaced apart. This means that when the mounting portion 131 is disposed in the cooling cavity 111, the outer peripheral wall of the mounting portion 131 and the inner wall of the cooling cavity 111 are spaced apart, so that a first space 140 is formed between the outer peripheral wall of the mounting portion 131 and the inner wall of the cooling cavity 111. This ensures that the coolant in the first space 140 can directly contact the inner surface of the stator assembly 100, while also reducing the molding difficulty of the first space 140.

[0067] As can be seen from the above structure, the linear motor 1000 of this utility model embodiment has a first space 140 provided in the mounting part 131. The first space 140, the liquid inlet channel 132 and the liquid outlet channel 133 cooperate to realize the circulation of low temperature coolant. The circulating coolant exchanges heat with the stator assembly 100 to prevent the temperature of the stator assembly 100 from exceeding the upper limit value, thereby improving the reliability and durability of the linear motor 1000, that is, extending the service life of the linear motor 1000.

[0068] Meanwhile, since the temperature of the stator assembly 100 will not exceed the upper limit, the linear motor 1000 of this application can operate under high current conditions, thereby improving the peak thrust and rated thrust output of the linear motor 1000 and ensuring the working performance of the linear motor 1000.

[0069] Understandably, compared to the prior art, this application integrates a cooling component 130 within the stator assembly 100 of the linear motor 1000. This cooling component 130 is used to dissipate heat from the stator assembly 100 itself, ensuring that the temperature of the linear motor 1000 can be maintained within a suitable range during operation, thereby guaranteeing the working performance of the linear motor 1000 and extending its service life.

[0070] In some embodiments, the linear motor 1000 further includes a mover assembly coupled to the stator assembly 100, and the mover assembly is provided with a guide rod 200 (the specific structure of the guide rod 200 can be found in [reference]). Figure 1 and Figure 2 ).

[0071] It should be noted that the coupling between the mover assembly and the stator assembly 100 mentioned above can be understood as the mover assembly and the stator assembly 100 working together to form a linear motor 1000. During the operation of the linear motor 1000, the mover assembly can move relative to the stator assembly 100. In this way, when the linear motor 1000 is applied to a vehicle, it can buffer the impact transmitted from the road surface and isolate the noise input from the road surface and tires to ensure the comfort of the vehicle.

[0072] Furthermore, by setting a guide rod 200 on the mover assembly, the movement direction of the mover assembly can be guided by the guide rod 200, avoiding deviation of the mover assembly during movement, thereby ensuring that the mover assembly can move in a predetermined direction and ensuring the accuracy of the mover assembly movement. To a certain extent, this can ensure that the relative axial distance between the stator assembly 100 and the mover assembly remains unchanged during mutual movement, so that the wheel can move in a predetermined direction, ensuring the stability of the vehicle when driving, which can also be understood as ensuring the working performance of the linear motor 1000.

[0073] In some embodiments, such as Figure 1 and Figure 2 As shown, the stator assembly 100 includes a mounting base 110 for mounting the coil winding 120, and a cooling cavity 111 is provided inside the mounting base 110. That is to say, the mounting base 110 is not only used to mount the coil winding 120, but also forms a cooling cavity 111 to facilitate the mounting of the cooling assembly 130, ensuring the heat dissipation performance of the stator assembly 100, and at the same time facilitating the cooling of the coil winding 120 mounted on the mounting base 110, thereby preventing the coil winding 120 and the various sensor wiring harnesses from being burned out, and also preventing the heat of the coil winding 120 from being transferred to the permanent magnet of the mover assembly, causing the permanent magnet to demagnetize.

[0074] It should be noted that by placing the coil winding 120 on the mounting base 110, the mounting base 110 can support the coil winding 120, thereby improving the positional stability of the coil winding 120, ensuring the working performance of the coil winding 120, and reducing the installation difficulty of the coil winding 120.

[0075] In some embodiments, combined with Figure 1 and Figure 2 As shown, the mounting base 110 is provided with a mounting groove 112, and the coil winding 120 is disposed in the mounting groove 112, so as to realize the mounting of the coil winding 120 on the mounting base 110 and reduce the installation difficulty of the coil winding 120.

[0076] In some embodiments, the mover assembly is provided with a permanent magnet, which cooperates with the coil winding 120 to achieve coupling between the mover assembly and the stator assembly 100, ensuring that the mover assembly can move relative to the stator assembly 100 during the operation of the linear motor 1000, so as to buffer the impact transmitted from the road surface.

[0077] In some embodiments, combined with Figure 1 and Figure 2 As shown, the mounting part 131 is provided with a guide cavity 1311, which is adapted to move and cooperate with the guide rod 200. That is to say, this application realizes the moving cooperation between the stator assembly 100 and the mover assembly by setting the guide rod 200, and uses the guide rod 200 to limit the moving direction of the mover assembly, so as to prevent the mover assembly from deviating during the movement, thereby ensuring that the mover assembly can move in a predetermined direction and ensuring the accuracy of the movement of the mover assembly.

[0078] In other words, the mounting part 131 of this application can not only install the cooling component 130 on the stator assembly 100, but also cooperate with the cooling cavity 111 to form the first space 140. At the same time, it can also move and cooperate with the guide rod 200 to improve the integration of the stator assembly 100, reduce the number of structural components of the stator assembly 100, thereby reducing the manufacturing difficulty and manufacturing cost of the stator assembly 100.

[0079] Meanwhile, by configuring the guide rod 200 to move and cooperate with the guide cavity 1311, the guide rod 200 can be positioned close to the first space 140. This allows the coolant in the first space 140 to cool and dissipate heat from the guide rod 200, which in turn cools and dissipates heat from part of the mover assembly. This ensures that the temperature of the mover assembly can be maintained within a suitable temperature range, thereby ensuring that the linear motor 1000 operates within a suitable temperature range, guaranteeing the working performance of the linear motor 1000, and extending the service life of the linear motor 1000.

[0080] In other words, by configuring the stator assembly 100 to have a cooling cavity 111, the cooling cavity 111 provides clearance space for the installation of the cooling component 130, so as to ensure that the mounting part 131 of the cooling component 130 can be located in the mounting base 110, thereby facilitating the cooling of the stator assembly 100 by using the cooling component 130.

[0081] In addition, this application also provides a guide cavity 1311 in the mounting section 131, which is suitable for moving and cooperating with the guide rod 200. While ensuring that the guide rod 200 can be used for guidance during the movement of the mover assembly, the circulating coolant can also be used to exchange heat with the guide rod 200 to reduce the temperature of the mover assembly. This allows the temperature of the linear motor 1000 to be maintained within a suitable range during operation, so as to ensure the working performance of the linear motor 1000.

[0082] In other words, the stator assembly 100 of this application can not only dissipate heat and cool itself, but also dissipate heat and cool the guide rod 200 of the mover assembly.

[0083] In some examples, the coolant is cooling water, which can reduce the cost of using the coolant while achieving heat exchange between the coolant and the stator assembly 100, thereby reducing the cost of using the linear motor 1000.

[0084] In some embodiments, the cooling assembly 130 includes an inlet pipe and an outlet pipe. An inlet channel 132 is formed in the inlet pipe, and an outlet channel 133 is formed in the outlet pipe. The inlet pipe and the outlet pipe are respectively connected to the first space 140 to realize the connection between the inlet channel 132 and the outlet channel 133 and the first space 140, thereby realizing the circulation of the low-temperature coolant.

[0085] In some embodiments, such as Figure 2 As shown, the inlet of the liquid inlet channel 132 and the outlet of the liquid outlet channel 133 are both located at the top of the stator assembly 100. This allows the coolant to enter through the top of the stator assembly 100 and exit through the top of the stator assembly 100, ensuring that the coolant can cover multiple parts of the stator assembly 100. In other words, it ensures that the cooling component 130 can dissipate heat from multiple parts of the stator assembly 100, thereby ensuring the cooling effect of the cooling component 130.

[0086] Optionally, such as Figure 2 As shown, the coil winding 120 is arranged around the cooling cavity 111, so that the cooling cavity 111 is formed in the high-temperature part of the stator assembly 100, that is, so that the first space 140 can be directly facing the high-temperature part of the stator assembly 100, thereby facilitating the use of coolant to cool the coil winding 120 and ensuring the heat dissipation effect of the stator assembly 100.

[0087] In some embodiments, combined with Figure 2 , Figure 3 and Figure 12 As shown, the end of the liquid inlet channel 132 extends into the first space 140. This enables communication between the liquid inlet channel 132 and the first space 140, facilitating the introduction of coolant into the first space 140 via the liquid inlet channel 132.

[0088] Optionally, combined Figure 2 , Figure 3 and Figure 12 As shown, the end of the liquid outlet channel 133 is connected to the first space 140. This connection between the liquid outlet channel 133 and the first space 140 allows the coolant in the first space 140 to be discharged through the liquid outlet channel 133, enabling the coolant to circulate between the liquid inlet channel 132, the first space 140, and the liquid outlet channel 133, thereby facilitating the cooling of the stator assembly 100.

[0089] In some embodiments, combined with Figure 3 , Figure 5 and Figure 6 As shown, the cooling assembly 130 also includes a flow guide 134, which is located on the outside of the mounting portion 131. A flow guide groove 1341 is provided between the flow guide 134 and the mounting portion 131, and the liquid inlet channel 132 communicates with the flow guide groove 1341. The liquid inlet channel 132 is used to guide the coolant into the flow guide groove 1341. Because the flow guide 134 itself has a certain extension length, the flow guide groove 1341 can be used to guide the flow of coolant, so that the coolant can cover multiple parts of the mounting base 110, thereby facilitating the cooling of multiple parts of the stator assembly 100 with coolant and ensuring the cooling effect of the cooling assembly 130.

[0090] In some embodiments, combined with Figure 2 , Figure 5 and Figure 6 As shown, the guide member 134 is located on the outside of the mounting part 131 and extends along the axial direction of the mounting part 131, so that the guide groove 1341 extends along the axial direction of the mounting part 131. In this way, the guide groove 1341 can guide the coolant to flow to the bottom of the mounting part 131, that is, to the bottom of the first space 140. Subsequently, as the coolant in the first space 140 increases, the coolant level increases. When the level rises to the end of the outlet channel 133, the coolant is discharged through the outlet channel 133, so as to ensure that the coolant can cool down multiple parts of the stator assembly 100 and ensure the cooling effect.

[0091] Optionally, combined Figure 3 , Figure 6 and Figure 7As shown, the flow guide 134 is positioned opposite the side wall of the mounting portion 131 and spaced apart from the mounting portion 131, so that a flow guide groove 1341 is provided between the flow guide 134 and the mounting portion 131, thereby facilitating the flow of coolant by using the flow guide groove 1341.

[0092] Optionally, such as Figure 5 As shown, the guide element 134 is provided on the radial side of the mounting part 131. This facilitates the use of the guide groove 1341 to guide the coolant to the bottom of the mounting part 131, while also reducing the material used for the guide element 134, thereby reducing the cost of using the guide element 134.

[0093] In some embodiments, such as Figure 3 As shown, the end of the liquid inlet channel 132 extends into the guide groove 1341. This enables the liquid inlet channel 132 to communicate with the guide groove 1341, thereby facilitating the introduction of coolant into the guide groove 1341 using the liquid inlet channel 132.

[0094] Optionally, combined Figure 2 and Figure 3 As shown, the end of the liquid outlet channel 133 extends into the first space 140 to achieve communication between the liquid outlet channel 133 and the first space 140, thereby facilitating the discharge of coolant from the first space 140 using the liquid outlet channel 133, so that the coolant can circulate between the liquid inlet channel 132, the first space 140 and the liquid outlet channel 133.

[0095] In some embodiments, combined with Figure 2 , Figure 4 and Figure 6 As shown, the bottom of the guide member 134 has a liquid outlet 1342, which connects the guide channel 1341 and the first space 140, so that the coolant in the guide channel 1341 can be transported to the first space 140 through the liquid outlet 1342, thereby allowing the coolant to circulate between the liquid inlet channel 132, the first space 140 and the liquid outlet channel 133, so as to cool the stator assembly 100.

[0096] In a specific example, when it is necessary to cool the stator assembly 100, the low-temperature coolant can be introduced from the inlet of the inlet channel 132. At this time, the coolant enters the guide groove 1341 along the inlet channel 132. Under the guidance of the guide groove 1341, the coolant flows to the outlet 1342 and enters the first space 140 through the outlet 1342. At this time, the heat generated by the coil winding 120 is transferred to the coolant through the mounting base 110. The heat is absorbed by the coolant and carried away through the outlet channel 133, so as to achieve the purpose of heat dissipation of the stator assembly 100 by using the cooling component 130.

[0097] In summary, the cryogenic coolant of this application enters the first space 140 from the bottom and flows out from the top of the first space 140, ensuring that all high-temperature parts on the stator assembly 100 can be cooled, giving full play to the role of the coolant and ensuring the cooling effect.

[0098] In some embodiments, combined with Figure 2 and Figure 6 As shown, the inlet channel 132 and the outlet channel 133 are spaced apart. This ensures sufficient clearance between the inlet channel 132 and the outlet channel 133. On the one hand, this facilitates connection of the inlet channel 132 and the outlet channel 133 to external pipelines. On the other hand, it prevents the coolant temperatures in the inlet channel 132 and the outlet channel 133 from affecting each other. In other words, it prevents the heat from the higher-temperature coolant in the outlet channel 133 from being transferred to the inlet channel 132. This ensures that the coolant temperature in the inlet channel 132 is maintained within a suitable range, guaranteeing the cooling effect of the cooling component 130.

[0099] Optionally, such as Figure 2 As shown, the inlet channel 132 and the outlet channel 133 are welded to the mounting part 131 respectively, so as to fix the inlet channel 132 and the outlet channel 133 to the mounting part 131, thereby facilitating the communication between the inlet channel 132 and the outlet channel 133 and the first space 140 respectively. In addition, welding the inlet channel 132 and the outlet channel 133 to the mounting part 131 respectively can also ensure the connection strength and reliability of the inlet channel 132 and the outlet channel 133 and the mounting part 131.

[0100] In some embodiments, such as Figure 2 As shown, the mounting base 110 is also provided with a mounting cavity that communicates with the cooling chamber 111. The liquid inlet channel 132 and the liquid outlet channel 133 are located in the mounting cavity so that the liquid inlet channel 132 and the liquid outlet channel 133 can be set close to the mounting part 131, thereby facilitating the fixed connection between the liquid inlet channel 132, the liquid outlet channel 133 and the mounting part 131.

[0101] Optionally, combined Figure 2 and Figure 3 As shown, a sealing ring 150 is provided between the cooling component 130 and the mounting base 110 to achieve a sealed fit between the cooling component 130 and the mounting base 110, thereby preventing leakage at the connection between the cooling component 130 and the mounting base 110 and ensuring that the low-temperature coolant can circulate between the inlet channel 132, the outlet channel 133 and the first space 140.

[0102] Optionally, combined Figure 2 and Figure 4As shown, the inner peripheral wall of the cooling chamber 111 is provided with a positioning groove 1111, and a part of the mounting part 131 extends into the positioning groove 1111. This further achieves a sealed fit between the cooling assembly 130 and the mounting base 110, preventing leakage at the connection between the cooling assembly 130 and the mounting base 110.

[0103] In some embodiments, such as Figure 4 As shown, the mounting part 131 includes a positioning boss 1312, a portion of which extends into the positioning groove 1111 to allow a portion of the mounting part 131 to extend into the positioning groove 1111, thereby enabling the mounting part 131 to be connected with the mounting base 110, which means achieving a sealed fit between the cooling assembly 130 and the mounting base 110.

[0104] In some embodiments, combined with Figure 2 , Figure 4 and Figure 5 As shown, the positioning boss 1312 has a stepped surface, which cooperates with the positioning groove 1111 to allow a part of the positioning boss 1312 to extend into the positioning groove 1111, thereby realizing the connection between the mounting part 131 and the mounting base 110.

[0105] In some embodiments, such as Figure 5 As shown, in the axial direction of the mounting part 131, the positioning boss 1312 and the guide member 134 are spaced apart to form the liquid outlet 1342. The liquid outlet 1342 connects the guide groove 1341 and the first space 140, so that the coolant in the guide groove 1341 can be transported to the first space 140 through the liquid outlet 1342, so that the coolant can circulate between the liquid inlet channel 132, the first space 140 and the liquid outlet channel 133, so as to achieve the purpose of cooling the stator assembly 100 with the coolant.

[0106] Optionally, a portion of the positioning boss 1312 extends into the positioning groove 1111 and is welded to the mounting base 110 to ensure the reliability of the connection between the mounting part 131 and the mounting base 110, and effectively prevent leakage at the connection between the cooling assembly 130 and the mounting base 110.

[0107] In some embodiments, combined with Figure 2 , Figure 3 and Figure 4 As shown, the sealing ring 150 is located at the upper end of the cooling cavity 111, and the positioning groove 1111 is formed at the lower end of the cooling cavity 111. Since the hydraulic pressure at the upper end of the cooling cavity 111 is relatively small, the sealing ring 150 can effectively achieve the sealing fit between the cooling component 130 and the mounting base 110, and reduce the sealing difficulty between the cooling component 130 and the mounting base 110.

[0108] Meanwhile, because the hydraulic pressure at the lower end of the cooling chamber 111 is too high, the inner peripheral wall of the cooling chamber 111 located at the lower end is fastened and sealed to the mounting part 131 by welding, so as to effectively ensure the sealing effect between the cooling component 130 and the mounting base 110.

[0109] Of course, in some other embodiments, combined with Figure 11 and Figure 12 As shown, the cooling component 130 is integrally formed with the mounting base 110. That is, the mounting part 131, liquid inlet channel 132, liquid outlet channel 133, etc. of the cooling component 130 are integrally formed on the mounting base 110, which reduces the molding difficulty of the cooling component 130. At the same time, it can also eliminate the need for sealing connection between the cooling component 130 and the mounting base 110, reduce the molding difficulty of the stator assembly 100, and ensure the cooling effect of the cooling component 130.

[0110] In some embodiments, combined with Figure 8 , Figure 9 and Figure 10 As shown, the cooling assembly 130 also includes a first manifold 135, which has multiple spaced-apart branch ports 1351. These branch ports 1351 are respectively connected to the guide channel 1341. The end of the liquid inlet channel 132 is connected to the first manifold 135. This allows for communication between the liquid inlet channel 132 and the guide channel 1341, facilitating the introduction of coolant into the guide channel 1341 via the liquid inlet channel 132.

[0111] In other words, the connection between the liquid inlet channel 132 and the guide channel 1341 is not limited to extending the end of the liquid inlet channel 132 into the guide channel 1341. Alternatively, a first manifold 135 can be provided at the end of the liquid inlet channel 132. The liquid inlet channel 132 introduces the low-temperature coolant into the first manifold 135, and then the coolant is introduced into the guide channel 1341 through multiple branch ports 1351 on the first manifold 135. This allows the low-temperature coolant to be introduced into the guide channel 1341, facilitating the cooling of the stator assembly 100 using the low-temperature coolant.

[0112] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0113] In some embodiments, combined with Figure 8 , Figure 9 and Figure 10As shown, the flow guide 1341 is arranged around the outer peripheral wall of the mounting portion 131. That is to say, it is not limited to the flow guide 134 being provided on the radial side of the mounting portion 131, but the flow guide 1341 can also be arranged around the outer peripheral wall of the mounting portion 131, that is, the flow guide 134 is sleeved on the outer periphery of the mounting portion 131. In this way, it is convenient to guide the coolant to the bottom of the mounting portion 131 using the flow guide 1341, while also ensuring the amount of coolant flowing to the bottom of the mounting portion 131, thereby ensuring the cooling effect of the coolant.

[0114] In some embodiments, combined with Figure 8 , Figure 9 and Figure 10 As shown, the cooling assembly 130 also includes a second manifold 136, which is connected to the end of the liquid outlet channel 133. The second manifold 136 is provided with a plurality of spaced-apart manifolds 1361. The plurality of spaced-apart manifolds 1361 are mainly used to connect the second manifold 136 with the first space 140. In this way, the coolant in the first space 140 can enter the second manifold 136 through the plurality of manifolds 1361. The coolant in the second manifold 136 then enters the liquid outlet channel 133 through the end of the liquid outlet channel 133, thereby connecting the first space 140 with the liquid outlet channel 133. This facilitates the discharge of the coolant with a higher temperature in the first space 140 through the liquid outlet channel 133, so that the temperature of the coolant in the first space 140 can always be maintained within a suitable range, which is convenient for cooling the stator assembly 100 with low-temperature coolant.

[0115] In the description of this utility model, features defined as "first" and "second" may explicitly or implicitly include one or more of the features, used to distinguish and describe features, without any order or importance.

[0116] In other words, instead of simply extending the end of the outlet channel 133 into the first space 140 to achieve communication between the outlet channel 133 and the first space 140, a second manifold 136 can also be provided at the end of the outlet channel 133. The coolant in the first space 140 enters the second manifold 136 through multiple manifolds 1361, and then the coolant is guided into the outlet channel 133 through the second manifold 136. This facilitates the discharge of the coolant with a higher temperature, thereby ensuring that the coolant with a lower external temperature can enter the first space 140, so as to use the low-temperature coolant to cool the stator assembly 100.

[0117] In some embodiments, such as Figure 9As shown, the inlet channel 132 and the outlet channel 133 are nested. That is to say, it is not limited to setting the inlet channel 132 and the outlet channel 133 separately; the nested arrangement can also allow the cryogenic coolant to circulate between the inlet channel 132, the outlet channel 133 and the first space 140.

[0118] It should be noted that when the liquid inlet channel 132 and the liquid outlet channel 133 are nested, only one liquid inlet pipe or one liquid outlet pipe can be set to reduce the number of pipes, further simplify the structure of the stator assembly 100, and reduce the manufacturing cost of the stator assembly 100.

[0119] Optionally, such as Figure 9 As shown, the mounting base 110 has a mounting cavity that communicates with the cooling cavity 111. The liquid inlet channel 132 is located in the mounting cavity and is located in the radial center of the mounting cavity. The inner wall of the mounting cavity and the outer wall of the liquid inlet channel 132 form a liquid outlet channel 133, so as to realize the nested arrangement of the liquid inlet channel 132 and the liquid outlet channel 133, and eliminate the need for the liquid outlet pipe, simplifying the structure of the stator assembly 100.

[0120] In other words, when the inlet channel 132 and the outlet channel 133 are nested, the cooling assembly 130 can adopt a single-pipe structure. Coolant enters the inlet channel 132 and enters the guide channel 1341 through the branch port 1351 of the first confluence chamber 135. The guide channel 1341 guides the coolant to the bottom of the cooling chamber 111, and then flows through the first space 140 to the top of the cooling chamber 111. The coolant at the top of the cooling chamber 111 enters the second confluence chamber 136 through multiple confluence ports 1361, and enters the outlet channel 133 through the second confluence chamber 136, and is discharged through the outlet channel 133 to achieve the circulation of coolant.

[0121] In some embodiments, the cooling assembly 130 further includes a reservoir and a circulation pump (not shown). The reservoir is filled with coolant and is connected to an inlet channel 132 and an outlet channel 133. The circulation pump drives the coolant to circulate between the reservoir and the first space 140. This allows the cryogenic coolant to circulate between the inlet channel 132, the outlet channel 133, and the first space 140, facilitating the cooling of the stator assembly 100.

[0122] In a specific example, when the circulation pump is working, the circulation pump first drives the coolant in the storage tank into the inlet channel 132, and uses the inlet channel 132 to introduce the low-temperature coolant into the first space 140. The coolant in the first space 140 exchanges heat with the stator assembly 100 to reduce the temperature of the stator assembly 100, especially the temperature of the coil winding 120. At the same time, during the heat exchange process between the coolant and the stator assembly 100, the coolant communicates with the outlet channel 133 and flows to the storage tank through the outlet channel 133 to realize the circulation of the coolant and ensure the heat exchange effect of the coolant.

[0123] Optionally, the cooling assembly 130 also includes an external cooling component for heat exchange with the coolant in the reservoir, so that the temperature of the coolant in the reservoir can be maintained within a suitable range, thereby maintaining the temperature of the coolant entering the first space 140 within a suitable range, improving the heat exchange effect, which is beneficial to improving the heat dissipation effect of the coolant.

[0124] In some embodiments, the mover assembly includes a permanent magnet, and the permanent magnet and the coil winding 120 cooperate to achieve the coupling between the stator assembly 100 and the mover assembly, thereby enabling the mover assembly to reciprocate so as to effectively buffer the impact transmitted by the road surface using the linear motor 1000 and improve the ride comfort of the vehicle.

[0125] In a specific example, the coil winding 120 is energized, and the energized coil winding 120 generates a variable magnetic field, causing the permanent magnet to move in a straight line. The permanent magnet and the coil winding 120 cooperate to achieve the coupling between the stator assembly 100 and the mover assembly (the working principle of the cooperation between the permanent magnet and the coil winding 120 to realize the linear motor 1000 is existing technology and will not be described in detail). This enables the mover assembly to reciprocate, thereby achieving the purpose of vibration reduction.

[0126] In some embodiments, combined with Figure 2 , Figure 4 and Figure 9 As shown, the linear motor 1000 also includes a bearing 300, which is located in the cooling chamber 111 and sleeved on the guide rod 200. The bearing 300 and the guide rod 200 cooperate to guide the movement direction of the mover assembly, preventing the mover assembly from deviating during movement, thereby ensuring that the mover assembly can move in a predetermined direction and guaranteeing the accuracy of the mover assembly's movement. This allows the vehicle's wheels to move in a predetermined direction, ensuring the vehicle's stability during driving.

[0127] It is worth noting that this application uses a guide rod 200 to guide the mover assembly, which can effectively improve the accuracy of the mover assembly movement compared to the prior art which does not have a guide rod 200.

[0128] It should be noted that this application does not limit the specific location of the bearing 300 and the guide rod 200, that is, the bearing 300 and the guide rod 200 can be located below the stator assembly 100 or above the stator assembly 100.

[0129] Where the bearing 300 and guide rod 200 are located below the stator assembly 100, the liquid inlet channel 132 and liquid outlet channel 133 extend from above the stator assembly 100 (e.g., Figure 2 (As shown); When the bearing 300 and guide rod 200 are located above the stator assembly 100, the liquid inlet channel 132 and liquid outlet channel 133 are led out from below the stator assembly 100 (not shown in this example figure) to avoid the bearing 300, guide rod 200 and cooling assembly 130 affecting each other's positions, so as to facilitate the use of bearing 300 and guide rod 200 to ensure the positional accuracy of the mover assembly when it moves, thereby ensuring the working performance of the linear motor 1000.

[0130] The suspension system of this utility model is described below.

[0131] A suspension system according to an embodiment of the present invention includes: a linear motor 1000.

[0132] Among them, the linear motor 1000 is the aforementioned linear motor 1000, and the specific structure of the linear motor 1000 will not be described in detail here.

[0133] As can be seen from the above structure, the suspension system of this utility model embodiment, by adopting the aforementioned linear motor 1000, ensures the working performance of the suspension system, reduces the temperature of the suspension system during operation, and extends the service life of the suspension system.

[0134] In some examples, the stator assembly 100 is adapted to be connected to the vehicle body end, and the mover assembly is adapted to be connected to the vehicle wheel end. As the wheel moves up and down relative to the vehicle body, the mover assembly moves relative to the stator assembly 100 to buffer the impact transmitted from the road surface and isolate the noise input from the road surface and tires to ensure the comfort of the vehicle.

[0135] Of course, in some examples, the stator assembly 100 may be connected to the wheel end of the vehicle, and the mover assembly may be connected to the body end of the vehicle. This application does not impose any specific restrictions.

[0136] The vehicle according to an embodiment of the present invention is described below.

[0137] A vehicle according to an embodiment of the present invention includes: a suspension system.

[0138] The suspension system is the aforementioned linear motor 1000; the specific structure of the suspension system will not be described in detail here.

[0139] As can be seen from the above structure, the vehicle of this utility model embodiment, by adopting the aforementioned suspension system, can effectively improve the smoothness of vehicle driving and ensure the driving experience.

[0140] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0141] The linear motor 1000, suspension system, and other components of the vehicle according to the embodiments of this utility model, such as other structures and working principles of the linear motor 1000, are known to those skilled in the art and will not be described in detail here.

[0142] In this specification, the terms "embodiment," "example," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0143] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A linear motor, characterized in that, The linear motor includes a stator assembly, the stator assembly having a cooling cavity, and the stator assembly comprising: A cooling assembly includes a mounting part, a liquid inlet channel, and a liquid outlet channel. The mounting part is disposed inside the cooling chamber. A first space is provided between the outer peripheral wall of the mounting part and the inner wall of the cooling chamber. The liquid inlet channel and the liquid outlet channel are respectively connected to the first space.

2. The linear motor according to claim 1, characterized in that, The cooling assembly also includes a flow guide, which is located on the outside of the mounting portion. A flow guide groove is provided between the flow guide and the mounting portion, and the liquid inlet channel is connected to the flow guide groove.

3. The linear motor according to claim 2, characterized in that, The end of the liquid inlet channel extends into the guide groove.

4. The linear motor according to claim 2, characterized in that, The cooling assembly further includes a first manifold, which has a plurality of spaced-apart branch outlets. The plurality of branch outlets are respectively connected to the guide groove, and the end of the liquid inlet channel is connected to the first manifold.

5. The linear motor according to claim 4, characterized in that, The guide groove is arranged around the outer peripheral wall of the mounting part.

6. The linear motor according to claim 1, characterized in that, The cooling assembly further includes a second manifold, which is connected to the end of the liquid outlet channel, and the second manifold has a plurality of spaced-apart manifolds.

7. The linear motor according to claim 1, characterized in that, The inner peripheral wall of the cooling chamber is provided with a positioning groove, and a part of the mounting part extends into the positioning groove.

8. The linear motor according to claim 7, characterized in that, The mounting part includes a positioning boss, a portion of which extends into the positioning groove.

9. The linear motor according to claim 1, characterized in that, The cooling assembly also includes a storage tank and a circulation pump. The storage tank is filled with coolant and is connected to the inlet channel and the outlet channel. The circulation pump is used to drive the coolant to circulate between the storage tank and the first space.

10. The linear motor according to claim 1, characterized in that, It also includes a mover assembly, which is coupled to the stator assembly, and the mover assembly is provided with a guide rod; The mounting section is provided with a guide cavity that moves in conjunction with the guide rod.

11. The linear motor according to claim 10, characterized in that, It also includes a bearing, which is disposed in the cooling cavity and sleeved on the guide rod.

12. The linear motor according to any one of claims 1-11, characterized in that, The inlet channel and the outlet channel are spaced apart.

13. The linear motor according to any one of claims 1-11, characterized in that, The inlet channel and outlet channel are nested together.

14. A suspension system, characterized in that, Includes the linear motor according to any one of claims 1-13.

15. A vehicle, characterized in that, Includes the suspension system according to claim 14.

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