Stator assembly, linear motor, suspension assembly and vehicle

Abstract

The utility model discloses a stator assembly, a linear motor, a suspension assembly and a vehicle, the stator assembly comprises a stator winding, a stator core shaft and a first detection part, the shaft wall of the stator core shaft is internally provided with a first cooling water channel and a second cooling water channel which extend along the axial direction of the stator core shaft; the first cooling water channel and the second cooling water channel are at least used for cooling the stator winding; the first detection part is arranged on the shaft wall of the stator core shaft, and the first detection part is used for detecting the position of the rotor assembly; and in the circumferential direction of the stator core shaft, the first detection part, the first cooling water channel and the second cooling water channel are arranged at intervals. According to the stator assembly provided by the embodiment of the utility model, through reasonably arranging the positions of the first detection part, the first cooling water channel and the second cooling water channel on the stator core shaft, the structure compactness of the stator assembly can be improved, and the cooling effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a stator assembly, a linear motor, a suspension assembly and a vehicle. Background Art

[0002] Generally, the motor includes a primary component, a secondary component and a position detection component, and the position detection component includes a first detection component and a second sensing component, and the first detection component and the second sensing component cooperate to detect the relative movement between the primary component and the secondary component. In the related art, a water channel is also provided on the primary component, and the arrangement of the water channel and the detection component is unreasonable, which reduces the space utilization and is not conducive to simplifying the motor structure. Utility Model Content

[0003] The utility model aims to at least solve the technical problems existing in the prior art. To this end, the utility model proposes a stator assembly, which can improve the structural compactness of the stator assembly by arranging the water channel and the first detection component at intervals in the circumferential direction, which is conducive to simplifying the motor structure.

[0004] According to the stator assembly of the embodiment of the utility model, it includes: a stator winding, a stator core shaft, and a first detection component, wherein a first cooling water channel and a second cooling water channel extending in the axial direction of the stator core shaft are provided in the shaft wall of the stator core shaft, and the first cooling water channel and the second cooling water channel are at least used to cool the stator winding; the first detection component is provided on the shaft wall of the stator core shaft, and the first detection component is used to detect the position of the mover assembly; wherein, in the circumferential direction of the stator core shaft, the first detection component, the first cooling water channel and the second cooling water channel are arranged at intervals.

[0005] According to the stator assembly of the embodiment of the utility model, by reasonably arranging the positions of the first detection component, the first cooling water channel and the second cooling water channel on the stator core shaft, the structural compactness of the stator assembly can be improved and the cooling effect can be improved.

[0006] In addition, the stator assembly according to the above embodiment of the utility model may also have the following additional technical features:

[0007] In some examples of the present invention, a water channel inlet is provided at the first end of the first cooling water channel, a water channel outlet is provided at the first end of the second cooling water channel, the water channel inlet and the water channel outlet are located on the same side of the stator core shaft, and the second end of the first cooling water channel is connected to the second end of the second cooling water channel.

[0008] In some examples of the utility model, the inner circumferential wall of the stator core shaft is also provided with a first boss, a second boss and a third boss which protrude radially inward, and the first boss, the second boss and the third boss are arranged at intervals in the circumferential direction of the stator core shaft, the first cooling water channel is arranged in the first boss, the second cooling water channel is arranged in the second boss, and the first detection component is arranged on the outer circumferential wall of the stator core shaft corresponding to the third boss.

[0009] In some examples of the present invention, the stator assembly also includes a conductive assembly, which includes a conductive member, and the conductive member is used to electrically connect the stator winding and the motor controller; the first cooling water channel and the second cooling water channel jointly exchange heat with the conductive assembly and the stator winding.

[0010] In some examples of the present invention, an outer peripheral wall of the stator core shaft is provided with a placement groove, and the first detection component is arranged in the placement groove.

[0011] In some examples of the present invention, a covering member is further included, wherein the covering member covers the opening of the placement slot.

[0012] In some examples of the present invention, a portion of the peripheral wall of the stator core shaft forms the placement groove.

[0013] In some examples of the present invention, one axial end of the placement slot is open to define a mounting opening of the first detection component, and the stator assembly further includes a blocking member for blocking the mounting opening.

[0014] In some examples of the present invention, the cover is disposed on an outer peripheral wall of the stator core shaft.

[0015] In some examples of the present invention, the covering member includes a main body and a cover plate, the main body and the cover plate are separate parts, the main body is fixed to the stator core shaft and is a magnetic conductive material, the cover plate is fixed to the main body and is radially opposite to the first detection component, and the cover plate is a non-magnetic conductive material.

[0016] The linear motor according to the embodiment of the present invention comprises the aforementioned stator assembly and mover assembly, wherein the mover assembly is provided with a second detection component, and the second detection component cooperates with the first detection component to detect the position of the mover assembly.

[0017] According to the linear motor of the embodiment of the present invention, by providing the aforementioned stator assembly, the structural compactness of the structural motor can be improved, which is conducive to simplifying the motor structure.

[0018] The suspension assembly according to the embodiment of the utility model includes the aforementioned linear motor.

[0019] According to the suspension assembly of the embodiment of the utility model, by arranging the aforementioned linear motor on the suspension assembly, and the first detection component, the first cooling water channel and the second cooling water channel in the linear motor are arranged at circumferential intervals along the stator core shaft, the compactness of the structure can be improved, which is beneficial to simplifying the structure of the suspension assembly and improving the stability of the operation of the suspension assembly.

[0020] The vehicle according to the embodiment of the utility model comprises a front suspension assembly according to .

[0021] According to the vehicle of the embodiment of the utility model, by applying the aforementioned suspension assembly to the vehicle, the vehicle structure can be simplified and the vehicle running stability can be improved.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1 It is a schematic diagram of the structure of the stator assembly in some embodiments of the utility model;

[0025] Figure 2 is a cross-sectional view of the stator assembly and the conductive assembly in some embodiments of the utility model;

[0026] Figure 3 is a partial structural schematic diagram of a stator assembly in some embodiments of the utility model (wherein the conductive assembly and the stator winding are not shown);

[0027] Figure 4 It is a schematic diagram of the structure of the stator assembly in some embodiments of the utility model;

[0028] Figure 5 It is a schematic diagram of the structure of the stator core shaft in some embodiments of the utility model;

[0029] Figure 6 is a schematic structural diagram of a stator assembly in some embodiments of the utility model (showing a state where the cover plate covers the first detection component);

[0030] Figure 7 It is a schematic diagram of the structure of the stator assembly in some embodiments of the utility model (showing the state when the cover plate and the body are separated);

[0031] Figure 8 It is a schematic diagram of the structure of the base in some embodiments of the utility model;

[0032] Fig. 9It is a model diagram of the first cooling water channel and the second cooling water channel in some embodiments of the utility model.

[0033] Reference numerals:

[0034] 100, stator assembly; 11, stator core shaft; 111, first boss; 112, second boss; 113, third boss; 115, first shaft section; 116, second shaft section; 117, first mounting surface; 118, second mounting surface; 110, first cooling water channel; 110a, first water inlet section; 110b, second water inlet section; 101, water channel inlet; 120, second cooling water channel; 120a, first water outlet section; 120b, second water outlet section ; 102, waterway outlet; 103, placement groove; 104, side hole; 105, middle hole; 12, stator winding; 121, lead wire; 13, stator core; 30, detection device; 31, first detection component; 40, conductive component; 41, base; 411, rib; 412, positioning and matching part; 401, connecting groove; 42, conductive part; 50, covering part; 51, main body; 52, cover plate; 53, mounting boss; 60, blocking part. DETAILED DESCRIPTION

[0035] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0036] Reference below Figure 1-Figure 9 Description According to the stator assembly 100 of the embodiment of the utility model, the stator assembly 100 includes: a stator winding 12 and a stator core shaft 11, and a first cooling water channel 110 and a second cooling water channel 120 extending along the axial direction of the stator core shaft 11 are provided in the axial wall of the stator core shaft 11, and a cooling medium can flow through the first cooling water channel 110 and the second cooling water channel 120 to cool the stator winding 12, which can reduce the temperature of the stator winding 12 when working, and is conducive to improving the motor power and ensuring the stability of the motor operation. Among them, the first cooling water channel 110 and the second cooling water channel 120 extend along the axial direction of the stator core shaft 11, which can increase the extension length of the cooling water channel and increase the matching area between the cooling water channel and the stator core shaft 11, thereby improving the heat exchange efficiency and cooling effect.

[0037] Furthermore, combined with Figure 3 and Figure 4, the stator assembly 100 also includes a first detection component 31, which is arranged on the shaft wall of the stator core shaft 11, and the first detection component 31 is used to detect the position of the moving subassembly; wherein, in the circumferential direction of the stator core shaft 11, the first detection component 31, the first cooling water channel 110 and the second cooling water channel 120 are arranged at intervals. Specifically, when the motor is working, the moving subassembly and the stator assembly 100 will produce relative movement. By setting the first detection component 31, the position change of the moving subassembly can be detected, which is conducive to improving the stability and accuracy of the detection, thereby improving the running stability of the motor. wherein, in the circumferential direction of the stator core shaft 11, the first detection component 31, the first cooling water channel 110 and the second cooling water channel 120 are arranged at intervals, thereby, the circumferential space of the stator core shaft 11 can be fully utilized, and the first detection component 31, the first cooling water channel 110 and the second cooling water channel 120 can be reasonably arranged, which can improve the structural compactness of the stator assembly 100, and can also achieve the effects of position detection and cooling at the same time. In addition, the first detection component 31, the first cooling water channel 110, and the second cooling water channel 120 are arranged at intervals, which can also improve the balance of the stator core shaft 11. The intervals between the first detection component 31, the first cooling water channel 110, and the second cooling water channel 120 can be the same to improve the structural stability of the stator core shaft 11; or the first detection component 31, the first cooling water channel 110, and the second cooling water channel 120 can be arranged in a form with different intervals according to actual application conditions, and the utility model is not limited thereto.

[0038] According to the stator assembly 100 of the embodiment of the utility model, by reasonably arranging the positions of the first detection component 31, the first cooling water channel 110 and the second cooling water channel 120 on the stator core shaft 11, the structural compactness of the stator assembly 100 can be improved and the cooling effect can be improved.

[0039] Combination Figure 2In some embodiments of the utility model, a water channel inlet 101 is provided at the first end of the first cooling water channel 110, a water channel outlet 102 is provided at the first end of the second cooling water channel 120, and the second end of the first cooling water channel 110 is connected to the second end of the second cooling water channel 120. In other words, the first cooling water channel 110 is connected to the second cooling water channel 120, and the cooling medium can enter from the water channel inlet 101 of the first cooling water channel 110, flow through the first cooling water channel 110 and the second cooling water channel 120, and then flow out from the water channel outlet 102 of the second cooling water channel 120. The cooling medium can fully flow through the first cooling water channel 110 and the second cooling water channel 120, which can increase the flow time of the cooling medium in the cooling water channel, improve the heat exchange efficiency, and thus improve the cooling effect. Among them, the water channel inlet 101 and the water channel outlet 102 are located on the same side of the stator core shaft 11, that is, the cooling medium can surround the stator core shaft 11 for heat exchange. In addition, the water channel inlet 101 and the water channel outlet 102 are located on the same side of the stator core shaft 11. On the one hand, it is convenient to inject cooling medium into the cooling water channel and recover cooling medium, and it is convenient to connect the water channel inlet 101 and the water channel outlet 102 with other structural parts, for example, it is convenient to connect the water channel inlet 101 and the water channel outlet 102 with external pipes or connectors, so as to improve the assembly efficiency of the stator assembly 100; on the other hand, it is possible to reduce the possibility of interference between the water channel inlet 101 and the water channel outlet 102 and the structural parts on the peripheral wall of the stator core shaft 11 (such as the stator core 13 or the stator winding 12, etc.), thereby ensuring the normal assembly of the stator assembly 100. Optionally, the stator core shaft 11 has a first end and a second end in the axial direction, and the water channel inlet 101 and the water channel outlet 102 can be arranged at the first end or the second end of the stator core shaft 11 .

[0040] Combination Figure 2 and Figure 3In some embodiments of the utility model, the first detection component 31 is located between the first cooling water channel 110 and the second cooling water channel 120, which can improve space utilization and help improve structural balance. That is, the first detection component 31 separates the first cooling water channel 110 and the second cooling water channel 120, or the first detection component 31, the first cooling water channel 110 and the second cooling water channel 120 are staggered in the circumferential direction. Specifically, since the first cooling water channel 110 and the second cooling water channel 120 are arranged in the axial wall of the stator core shaft 11, the strength of the position where the water channel is located is slightly weak. Therefore, by separating the arrangement positions of the first cooling water channel 110 and the second cooling water channel 120 through the first detection component 31, the low local structural strength of the stator assembly 100 can be avoided, and the stability and balance of the overall structure of the stator assembly 100 can be improved. In addition, the first cooling water channel 110 and the second cooling water channel 120 are not likely to interfere with each other in the circumferential direction of the stator core shaft 11, and the areas of the first cooling water channel 110 and the second cooling water channel 120 can be appropriately increased so that the cooling medium in the cooling water channel can fully exchange heat. In actual application, the sizes of the first cooling water channel 110 and the second cooling water channel 120 can be set according to the size of the first detection component 31, so that the circumferential space of the stator core shaft 11 can be fully utilized.

[0041] Specifically, combined Fig. 9 According to a stator assembly 100 of a specific embodiment of the utility model, the first cooling water channel 110 and the second cooling water channel 120 are connected at the second end to form a "U"-shaped structure, that is, the first cooling water channel 110 and the second cooling water channel 120 are arranged opposite to each other along the radial sides of the stator core shaft 11, and are connected at the axial ends of the stator core shaft 11, and the water channel inlet 101 and the water channel outlet 102 are arranged at the other axial end of the stator core shaft 11, or the open end of the "U"-shaped structure. In this way, the first cooling water channel 110 and the second cooling water channel 120 can be arranged around the stator core shaft 11, which is conducive to increasing the flow time of the cooling medium in the cooling water channel, thereby achieving sufficient heat exchange, improving the cooling effect, and avoiding energy waste.

[0042] Since the waterway is a virtual entity, for ease of understanding, Fig. 9 The model diagram of the first cooling water channel 110 and the second cooling water channel 120 is shown. Fig. 9The first cooling water channel 110 includes a first water inlet section 110a and a second water inlet section 110b, which are connected in the axial direction of the stator core shaft 11, and a water channel inlet 101 is provided at the first end of the first water inlet section 110a, and the second end of the first water inlet section 110a is connected to the first end of the second water inlet section 110b. The second cooling water channel 120 includes a first water outlet section 120a and a second water outlet section 120b, which are connected in the axial direction, and a water channel outlet 102 is provided at the first end of the first water outlet section 120a, and the second end of the first water outlet section 120a is connected to the first end of the second water outlet section 120b. The second end of the second water inlet section is connected to the second end of the second water outlet section 120b.

[0043] Combination Figure 3 In some embodiments of the utility model, the inner circumferential wall of the stator core shaft 11 is further provided with a first boss 111, a second boss 112 and a third boss 113 which are radially inwardly protruding. In the circumferential direction of the stator core shaft 11, the first boss 111, the second boss 112 and the third boss 113 are arranged at intervals. Specifically, by providing a plurality of bosses on the inner wall of the stator core shaft 11 and the plurality of bosses are arranged at intervals, support can be provided for the stator core shaft 11 to enhance the structural strength. In addition, the first cooling water channel 110 can be provided in the first boss 111, the second cooling water channel 120 can be provided in the second boss 112, and the first detection component 31 is provided on the outer circumferential wall of the stator core shaft 11 corresponding to the third boss 113. In this way, the space where the first boss 111 and the second boss 112 protrude relative to the peripheral wall of the stator core shaft 11 can be fully utilized, the cooling water channel is arranged in the boss, and the boss can also protect the cooling water channel, further improving the structural stability, and the first detection component 31 and the third boss 113 are arranged relative to each other, which can also improve the structural stability of the installation position of the first detection component 31 and facilitate the positioning of the first detection component 31. Therefore, the first boss 111, the second boss 112 and the third boss 113 can not only facilitate the positioning of the first cooling water channel 110, the second cooling water channel 120 and the first detection component 31 in the circumferential direction, but also improve the structural compactness and structural strength of the stator assembly 100.

[0044] Furthermore, combined with Figure 2 and Figure 3In the circumferential direction of the stator core shaft 11, the first boss 111, the second boss 112 and the third boss 113 form three side holes 104. In the radial direction of the stator core shaft 11, the radial inner sides of the first boss 111, the second boss 112 and the third boss 113 form a middle hole 105. The middle hole 105 is located radially inside the first cooling water channel 110 and the second cooling water channel 120. The three side holes 104 are respectively arranged between the first cooling water channel 110 and the second cooling water channel 120, between the first cooling water channel 110 and the first detection component 31, and between the second cooling water channel 120 and the first detection component 31. The three side holes 104 can separate the first detection component 31, the first cooling water channel 110 and the second cooling water channel 120 in the circumferential direction.

[0045] Combination Figure 2 In some embodiments of the present invention, the stator assembly 100 further includes a conductive assembly 40 , wherein the conductive assembly 40 includes a conductive member 42 , and the conductive member 42 is used to electrically connect the stator winding 12 and the motor controller to transfer electrical energy.

[0046] The first cooling water channel 110 and the second cooling water channel 120 jointly exchange heat with the conductive component 40 and the stator winding 12. That is, the first cooling water channel 110 and the second cooling water channel 120 can both exchange heat with the stator winding 12 and the conductive component 40, and the first cooling water channel 110 and the second cooling water channel 120 cooperate with each other to improve the cooling effect.

[0047] Specifically, combined Figure 2 and Figure 5 The stator core shaft 11 includes a first shaft segment 115 and a second shaft segment 116 . The shaft diameter of the first shaft segment 115 is larger than the shaft diameter of the second shaft segment 116 . The conductive component 40 is disposed in the first shaft segment 115 , and the stator winding 12 is sleeved in the second shaft segment 116 .

[0048] The bottom end of the first shaft segment 115 is connected to the top end of the second shaft segment 116. Since the axial diameter of the first shaft segment 115 is larger than the axial diameter of the second shaft segment 116, the conductive component 40 can be arranged in the first shaft segment 115 to ensure that the conductive component 40 has sufficient installation space. The stator winding 12 is sleeved on the radial outside of the second shaft segment 116, and the end of the conductive component 40 close to the second shaft segment 116 in the axial direction is electrically connected to the stator winding 12. By arranging the conductive component 40 in the first shaft segment 115, the conductive component 40 is electrically connected to the stator winding 12 and the motor controller.

[0049] Further integration Figure 1 , Figure 5 and Fig. 9The first water inlet section 110a and the first water outlet section 120a are arranged on the first shaft section 115, and the second water inlet section 110b and the second water outlet section 120b are arranged on the second shaft section 116. Thus, the first cooling water channel 110 can respectively exchange heat with the conductive component 40 and the stator winding 12, and the second cooling water channel 120 can respectively exchange heat with the conductive component 40 and the stator winding 12.

[0050] Combination Figure 2 , the lead wire 121 of the stator winding 12 is located radially outside the stator core shaft 11; the axial wall of the stator core shaft 11 is formed with a connecting hole 106, and the motor controller is inserted into the connecting hole 106 and is electrically connected to the lead wire 121 and the conductive component 40 respectively. Among them, the conductive member 42 is electrically connected to the stator winding 12 and the motor controller respectively. After assembly, at least part of the conductive component 40 is arranged inside the stator core shaft 11 (or the first shaft section 115), which can reduce the possibility of mechanical damage to the conductive component 40 on the one hand, improve the insulation of the conductive component 40, and ensure the normal operation of the stator assembly 100; on the other hand, it can reduce the space occupied by the conductive component 40 and the stator core shaft 11, improve the structural compactness of the stator assembly 100, and is conducive to the miniaturization of the stator assembly 100 and the stator assembly 100.

[0051] Combination Figure 2 and Figure 8 The conductive component 40 includes a base 41 and three conductive members 42. The base 41 wraps the conductive members 42. The base 41 has a rib 411 extending axially along the stator core shaft 11. The rib 411 stops at the first boss 111 to position the conductive component 40. A positioning fitting portion 412 is also provided at the end of the base 41 to limit the circumferential rotational freedom of the conductive component 40. A connecting groove 401 is provided on the positioning fitting portion 412. Specifically, one end of the motor controller is inserted into the connecting groove 401 through the connecting hole 106 and connected to the conductive member 42 to achieve electrical connection between the motor controller and the conductive component 40. Similarly, the other end of the motor controller is welded and connected to the lead wire 121 of the stator winding 12, thereby achieving electrical connection between the motor controller and the lead wire 121. Optionally, the base 41 is an insulating material, such as plastic.

[0052] More specifically, combined with Figure 3The base 41 is arranged in the middle hole 105, and the three conductive members 42 are arranged in the three side holes 104 in a one-to-one correspondence, wherein the middle hole 105 can be used to position the base 41 to improve the stability of the connection. Among them, the three side holes 104 can separate the first detection component 31, the first cooling water channel 110 and the second cooling water channel 120. In this way, the setting position of the three side holes 104 can make full use of the interval between the first detection component 31, the first cooling water channel 110 and the second cooling water channel 120, thereby facilitating the improvement of the spatial arrangement effect and the improvement of the spatial utilization rate. In addition, the first cooling water channel 110 and the second cooling water channel 120 arranged in the first boss 111 and the second boss 112 can also be used to cool the conductive component 40, and the structure is compact, which is conducive to improving the cooling effect.

[0053] In some embodiments of the present invention, Figure 2 and Figure 7 The outer wall of the stator core shaft 11 is provided with a placement groove 103, and the first detection component 31 is arranged in the placement groove 103, which can facilitate the first detection component 31 to be assembled on the stator core shaft 11. For example, when installing the first detection component 31, the first detection component 31 can be inserted into the placement groove 103, which can facilitate quick assembly and improve the accuracy of the assembly position.

[0054] Combination Figure 4 and Figure 6 In some embodiments of the present invention, a covering member 50 is further included, and the covering member 50 covers the opening of the placement groove 103. Thus, the covering member 50 can position the first detection component 31 in the placement groove 103, protect and fix the first detection component 31, and improve the stability after assembly.

[0055] In some embodiments of the present invention, a portion of the circumferential wall of the stator core shaft 11 is deformed inward to define a placement groove 103, whereby the first detection component 31 can be directly connected to the stator core shaft 11, and the first detection component 31 can be directly positioned on the stator core shaft 11 without setting up a separate assembly structure, which is conducive to simplifying the structure and improving detection accuracy.

[0056] Specifically, combined Figure 2 The bottom wall of the placement groove 103 forms a first mounting surface 117, and the second mounting surfaces 118 are connected to the opposite sides of the first mounting surface 117, wherein the first mounting surface 117 is in contact with the first detection component 31, and the second mounting surface 118 limits the opposite sides of the first detection component 31 along the circumferential direction. Both the first mounting surface 117 and the second mounting surface 118 are planes, which is conducive to forming a stable connection between the first detection component 31 and the placement groove 103.

[0057] In some embodiments of the present invention, Figure 4 and Figure 5One axial end of the placement groove 103 is open to define an installation opening of the first detection component 31, so that the first detection component 31 can be assembled in the placement groove 103 from the installation opening. The stator assembly 100 also includes a blocking member 60 for blocking the installation opening, which can block the installation opening after assembly, and can stably position the first detection component 31 in the placement groove 103, and can also protect the sensing component from being interfered by the external environment, which is beneficial to improving the detection effect of the first detection component 31.

[0058] In some embodiments of the present invention, the cover 50 is externally mounted on the outer peripheral wall of the stator core shaft 11 , so that the cover 50 can protect the stator core shaft 11 and enhance the overall structural strength of the stator core shaft 11 .

[0059] In some embodiments of the present invention, Figure 6 and Figure 7 The covering member 50 includes a main body portion 51 and a cover plate 52. The main body portion 51 and the cover plate 52 are separate parts. The main body portion 51 is fixed to the stator core shaft 11 and is a magnetic conductive material part, that is, the main body portion 51 can improve the structural stability of the stator core shaft 11, and is conducive to guiding and concentrating the magnetic field, and is conducive to improving the working efficiency and performance of the stator assembly 100.

[0060] The cover plate 52 is fixed to the main body 51 and is arranged radially opposite to the first detection component 31. The cover plate 52 is a non-magnetic material. Specifically, the magnetic field generated by the magnetic strip of the first detection component 31 will not pass through the non-magnetic material, so that the second detection component on the movable component can read the waveform of the first detection component 31. In other words, the cover 50 can be constructed in the form of a part of a magnetic material and a part of a non-magnetic material, which can improve the structural strength while ensuring the detection effect. In order to improve the overall hardness and strength of the stator core shaft 11, the cover 50 can be sleeved on the outer peripheral wall of the stator core shaft 11. The cover 50 includes a main body 51 and a cover plate 52. During assembly, the main body 51 with higher hardness and strength, that is, a magnetic stainless steel material, can be sleeved on the outer peripheral wall of the stator core shaft 11. Furthermore, an opening can be set on the main body 51, and the position of the opening is opposite to the first detection component 31. The cover plate 52 is assembled at the opening. The cover plate 52 can be made of non-magnetic steel material, and the main body 51 and the cover plate 52 can be welded as a whole. Figure 6 4 shows the state when the cover plate 52 covers the first detection component 31. Figure 7 The state in which the cover plate 52 and the main body 51 are separated is shown.

[0061] The first detection component 31 can detect the position by detecting the change of the magnetic field. By setting the cover plate 52 as a non-magnetic conductive member, it is possible to avoid interference with the first detection component 31 due to the magnetization of the cover plate 52, thereby ensuring that the magnetic field of the first detection component 31 is not affected and improving the accuracy of the detection. The first detection component 31 can be a magnetic position sensor.

[0062] Combination Figure 4 The outer peripheral wall of the cover 50 is formed with a mounting boss 53, which can provide a stable support point for the stator core shaft 11, for example, it can provide a stable support point when the stator core shaft 11 is assembled with other components, so as to facilitate fixing and supporting the stator core shaft 11, thereby facilitating the assembly of the stator core shaft 11 with other components. A plurality of mounting bosses 53 can be arranged at intervals along the circumference of the stator core shaft 11 to improve the support effect and improve the structural stability.

[0063] According to the linear motor of the embodiment of the present invention, it includes the aforementioned stator assembly 100 and mover assembly, and the mover assembly is provided with a second detection component, and the second detection component cooperates with the first detection component 31 to detect the position of the mover assembly. Specifically, the mover assembly and the stator assembly 100 cooperate to move back and forth, and can drive the load to achieve linear motion, and the first detection component 31 provided on the stator assembly 100 and the second detection component provided on the mover assembly can detect the relative position between the stator assembly 100 and the mover assembly. For example, the first detection component 31 can detect the position of the mover assembly relative to the stator assembly 100, and the second detection component can detect the position of the stator assembly 100 relative to the mover assembly. The first detection component 31 cooperates with the second detection component to improve the accuracy of the detection.

[0064] According to the linear motor of the embodiment of the present invention, by providing the aforementioned stator assembly 100, the structure of the stator assembly 100 is more compact, thereby improving the structural compactness of the structural motor, which is beneficial to simplifying the motor structure and improving the motor performance.

[0065] It should be noted that, according to the stator assembly 100 of the embodiment of the present invention, the movable assembly may move relative to the stator assembly 100 , or the stator assembly 100 may move relative to the movable assembly.

[0066] According to the suspension assembly of the embodiment of the utility model, including the aforementioned linear motor, by arranging the aforementioned linear motor on the suspension assembly, and the first detection component 31, the first cooling water channel 110 and the second cooling water channel 120 in the linear motor are arranged at circumferential intervals along the stator core shaft 11, the compactness of the structure can be improved, which is beneficial to simplify the structure of the suspension assembly and improve the stability of the operation of the suspension assembly.

[0067] The suspension assembly of the embodiment of the present application includes the linear motor of any of the above embodiments. It is understandable that since the suspension assembly in this embodiment includes the linear motor of the above embodiments, the suspension assembly at least includes the same beneficial effects as the motor, which will not be described in detail here.

[0068] The vehicle according to the embodiment of the utility model comprises the front suspension assembly according to the present invention. By applying the aforementioned suspension assembly to the vehicle, the vehicle structure can be simplified and the vehicle running stability can be improved.

[0069] The vehicle of the embodiment of the present application includes the suspension assembly of the above embodiment. The vehicle includes but is not limited to passenger vehicles such as pure electric vehicles and hybrid vehicles or large engineering vehicles with not very bad working conditions. It can be understood that since the vehicle in this embodiment includes the suspension assembly of the above embodiment, the vehicle at least includes the same beneficial effects as the suspension assembly, which will not be described in detail here.

[0070] Specifically, in some embodiments, the vehicle further includes a body and a wheel, the wheel is arranged on the wheel and can move relative to the body. The suspension assembly further includes a suspension, the linear motor is arranged on the suspension, and one end of the linear motor is connected to the body. Wherein, when the linear motor is stably running, the linear motor can drive the wheel to move relative to the body, thereby, the detection device can determine the relative displacement between the body and the wheel according to the position change between the stator assembly 100 and the mover assembly (or the primary assembly and the secondary assembly).

[0071] In the description of the present utility model, it should be understood that the terms "length", "upper", "lower", "front", "rear", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0072] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0073] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0074] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A stator assembly, characterized in that: include: Stator winding; A stator core shaft, wherein a first cooling water channel and a second cooling water channel extending in the axial direction of the stator core shaft are provided in the shaft wall of the stator core shaft, wherein the first cooling water channel and the second cooling water channel are at least used to cool the stator winding; A first detection component, the first detection component is arranged on the shaft wall of the stator core shaft, and the first detection component is used to detect the position of the moving component; Wherein, in the circumferential direction of the stator core shaft, the first detection component, the first cooling water channel and the second cooling water channel are arranged at intervals.

2. The stator assembly according to claim 1, characterized in that A water channel inlet is provided at the first end of the first cooling water channel, a water channel outlet is provided at the first end of the second cooling water channel, the water channel inlet and the water channel outlet are located on the same side of the stator core shaft, and the second end of the first cooling water channel is connected to the second end of the second cooling water channel.

3. The stator assembly according to claim 2, characterized in that: The inner circumferential wall of the stator core shaft is also provided with a first boss, a second boss and a third boss which protrude radially inward. In the circumferential direction of the stator core shaft, the first boss, the second boss and the third boss are arranged at intervals, the first cooling water channel is arranged in the first boss, the second cooling water channel is arranged in the second boss, and the first detection component is arranged on the outer circumferential wall of the stator core shaft corresponding to the third boss.

4. The stator assembly according to claim 3, characterized in that: The stator assembly further includes a conductive assembly, wherein the conductive assembly includes a conductive member, and the conductive member is used to electrically connect the stator winding and the motor controller; The first cooling water channel and the second cooling water channel are in heat exchange with the conductive component and the stator winding.

5. The stator assembly according to any one of claims 1 to 4, characterized in that: The outer peripheral wall of the stator core shaft is provided with a placement groove, and the first detection component is arranged in the placement groove.

6. The stator assembly according to claim 5, characterized in that A covering member is also included, and the covering member covers the opening of the placement groove.

7. The stator assembly according to claim 6, characterized in that A portion of the peripheral wall of the stator core shaft forms the placement groove.

8. The stator assembly according to claim 7, characterized in that One axial end of the placement groove is open to define a mounting opening of the first detection component, and the stator assembly further includes a blocking member for blocking the mounting opening.

9. The stator assembly according to claim 7, characterized in that: The cover is externally mounted on the outer peripheral wall of the stator core shaft.

10. The stator assembly according to claim 9, characterized in that The covering member includes a main body and a cover plate, wherein the main body and the cover plate are separate members, the main body is fixed to the stator core shaft and is a magnetic conductive material member, the cover plate is fixed to the main body and is radially opposite to the first detection component, and the cover plate is a non-magnetic conductive material member.

11. A linear motor, characterized in that: include: The stator assembly according to any one of claims 1 to 10, A movable subassembly is provided with a second detection component, and the second detection component cooperates with the first detection component to detect the position of the movable subassembly.

12. A suspension assembly, characterized in that: The invention comprises a stator assembly according to any one of claims 1 to 10 or a linear motor according to claim 11.

13. A vehicle, characterized in that: Comprising a suspension assembly according to claim 12.

Images