Motor and vehicle

Abstract

The invention discloses a motor and a vehicle. The motor comprises a stator and a cooling assembly, the stator comprises a stator winding and a stator iron core, the stator winding is connected with the stator iron core, and the area, close to the stator end face of the stator iron core, of the face, close to the central axis of the stator, of the stator winding is provided with an inwards-concave area; the cooling assembly comprises a plurality of sealing pieces which are detachably connected, the sealing pieces cover the stator winding, the sealing pieces are provided with containing cavities, the containing cavities of the sealing pieces are communicated, the stator end face abuts against the sealing pieces and shields openings, facing the stator end face, of the containing cavities, and therefore a sealed space is formed. A sealing part is arranged in the first side wall, close to the center shaft of the stator, of the sealing piece and close to the end face of the stator, the sealing part extends towards the containing cavity, and the sealing part corresponds to the inwards-concave area. Thus, a sealed space is formed between the plurality of sealing elements and the stator end face, and the sealing effect of the sealed space is good, thereby facilitating the improvement of the heat dissipation efficiency of the stator winding, and further facilitating the guarantee of the normal operation of the motor.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and more particularly to a motor and a vehicle. Background Art

[0002] The stator in the motor is mainly used to generate a rotating magnetic field, and the stator winding in the stator is the component that generates the magnetic field. The stator winding will generate a certain amount of heat in the process of generating the magnetic field. When the temperature of the stator winding is too high, it will affect the normal operation of the motor and even burn the motor. Therefore, in order to ensure the normal operation of the motor, some heat dissipation measures need to be taken to reduce the temperature of the stator winding. Summary of the invention

[0003] Embodiments of the present application provide a motor and a vehicle.

[0004] The motor of the embodiment of the present application includes a stator and a cooling assembly, the stator includes a stator winding and a stator core, the stator winding is connected to the stator core, and a concave area is provided in a region close to a stator end face of the stator core in a side of the stator winding close to a central axis of the stator; the cooling assembly includes a plurality of seals, the plurality of seals are detachably connected, a plurality of the seals are covered on the stator winding, the seals are provided with a accommodating cavity, the accommodating cavities of the plurality of seals are connected, the stator end face abuts against the seals and blocks an opening of the accommodating cavity toward the stator end face to form a sealed space, a sealing portion is provided in a first side wall of the seal close to the central axis of the stator and a region close to the stator end face, the sealing portion extends toward the accommodating cavity, and the sealing portion corresponds to the concave area.

[0005] In some embodiments, along the radial direction of the stator, the length of the accommodating cavity is greater than the length of the stator winding.

[0006] In some embodiments, along the radial direction of the stator, the width of the sealing portion is less than or equal to the distance between a side of the stator winding close to the central axis of the stator and a side of the stator end surface close to the central axis of the stator.

[0007] In some embodiments, the first side wall includes a side wall body connected to the sealing portion, and a side of the sealing portion facing the central axis of the stator is farther away from the central axis of the stator than a side of the side wall body facing the central axis of the stator.

[0008] In some embodiments, the seal also includes a second side wall and a top plate, wherein two ends of the top plate are respectively connected to the first side wall and the second side wall, and the top plate, the first side wall and the second side wall together form an accommodating cavity, and the stator winding is located in the accommodating cavity, wherein the distance between the second side wall and the central axis of the stator is greater than the distance between the first side wall and the central axis of the stator.

[0009] In some embodiments, the stator core includes a stator slot, which is connected to the stator end surface. The bottom of the first side wall is provided with a sealing tooth extending along the central axis direction of the stator, and the sealing tooth is used to combine with the stator slot to seal the stator slot.

[0010] In some embodiments, a limiting member is provided on an outer surface of the second side wall, and a coupling member is provided on an outer surface of the stator core, and the limiting member is used to be coupled with the coupling member to fix the second side wall.

[0011] In some embodiments, the cooling assembly includes a boss, and a boss is provided on a side of the top plate of each seal facing away from the accommodating cavity. The cooling assembly is also provided with a fixing member, and the fixing member cover is provided on the bosses of all the seals, and the sizes of the boss and the fixing member match so that all the seals are connected.

[0012] In some embodiments, the boss is provided with a first boss and a second boss, the first boss is connected to the second boss, and in the axial direction of the stator, the height of the first boss is greater than the height of the second boss, and each of the sealing members is provided with at least one of the first boss and the second boss; the fixing member includes a first fixing portion and a second fixing portion, the first fixing portion is connected to the second fixing portion, and in the axial direction of the stator, the height of the first fixing portion is greater than the height of the second fixing portion, the first fixing portion is covered on the first boss, and the second fixing portion is covered on the second boss.

[0013] In some embodiments, the fixing member further includes a reinforcing rib installed between the first fixing portion and the second fixing portion.

[0014] In some embodiments, in the axial direction of the stator, the tops of the various regions of the boss are of the same height, the tops of the various regions of the fixing portion are of the same height, and the fixing portion is covered on the boss.

[0015] In some embodiments, the cooling component includes a snap-fit ​​piece and a snap-fit ​​piece, the snap-fit ​​piece is provided with a recess, the recess is used to combine with the snap-fit ​​piece, the outer surface of the seal is provided with at least one of the snap-fit ​​piece and the snap-fit ​​piece, and among two adjacent seals, the snap-fit ​​piece can be rotatably installed on the outer surface of one of them, and the outer surface of the other is provided with a snap-fit ​​piece extending from the outer surface in a direction away from the accommodating cavity, and the positions of the snap-fit ​​pieces and the snap-fit ​​pieces of the two adjacent seals correspond to each other, so that the two adjacent seals can be connected by using the corresponding snap-fit ​​piece and the snap-fit ​​piece.

[0016] The vehicle according to the embodiment of the present application includes the motor described in any one of the above embodiments.

[0017] The motor and vehicle of the embodiment of the present application, the motor includes a stator and a cooling assembly, the cooling assembly includes a plurality of seals, the plurality of seals are detachably connected, and the plurality of seals can cover the stator winding of the stator. In one side of the stator winding close to the central axis of the stator, the area close to the stator end face is provided with a concave area, and at the same time, in the first side wall of the seal close to the central axis of the stator, the area close to the stator end face is provided with a sealing portion, and the sealing portion extends toward the accommodating cavity, so that the shape and position of the sealing portion and the concave area are matched. Therefore, each seal can be installed independently when installing the seal. First, the seal is randomly covered on the stator winding to ensure that the stator winding is located in the accommodating cavity. Then the seal can be pushed along the central axis of the stator toward the stator end face. Since the shape and position of the sealing portion and the concave area are matched, the sealing portion can contact the stator end face, so that the stator end face can block the opening of the accommodating cavity toward the stator end face. After each seal is installed, multiple seals can be connected. The accommodating cavities of the multiple seals are connected, and the seals are in contact with the stator end faces, so that a sealed space is formed between the multiple seals and the stator end faces, and the sealing effect of the sealed space is better. Therefore, after the cooling oil is injected into the sealed space, the risk of cooling oil leakage is small, so that the cooling oil wraps the stator winding and effectively dissipates the heat of the stator winding, thereby improving the heat dissipation efficiency of the stator winding, and then ensuring that the motor can operate normally.

[0018] Additional aspects and advantages of the embodiments of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 is a schematic diagram of the three-dimensional structure of a motor in some embodiments of the present application;

[0021] Figure 2 yes Figure 1 The three-dimensional structural diagram of the motor shown;

[0022] Figure 3 yes Figure 1 A cross-sectional view of the motor shown;

[0023] Figure 4 yes Figure 1 A cross-sectional view of the motor shown;

[0024] Figure 5 yes Figure 1 A schematic diagram of the three-dimensional structure of the seal of the motor shown;

[0025] Figure 6 is a schematic diagram of a three-dimensional structure of a seal of a motor according to other embodiments of the present application;

[0026] Figure 7 yes Figure 1 A schematic diagram of the three-dimensional structure of a fixing member of the motor shown;

[0027] Figure 8 yes Figure 1 A schematic diagram of the planar structure of the fixing member of the motor shown;

[0028] Fig. 9 It is a schematic diagram of the structure of a vehicle of certain embodiments of the present application.

[0029] Description of main component symbols:

[0030] 1000. Vehicles;

[0031] 100. Motor;

[0032] 10. stator; 11. stator winding; 111. inner concave area; 12. stator core; 121. stator end surface; 122. stator notch; 123. coupling piece; 13. insulator;

[0033] 20. Cooling assembly; 21. Sealing member; 211. Accommodating cavity; 212. First side wall; 2121. Sealing portion; 2122. Side wall body; 2123. Sealing teeth; 213. Top plate; 214. Second side wall; 2141. Stopper; 22. Fixing member; 221. First fixing portion; 2211. Groove of first fixing portion; 222. Second fixing portion; 2212. Groove of second fixing portion; 223. Reinforcing rib;

[0034] 30, boss; 31, first boss; 32, second boss; 50, engaging member; 60, buckle member;

[0035] 110, sealed space; X1, center axis. DETAILED DESCRIPTION

[0036] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of the present application, and cannot be understood as limiting the embodiments of the present application.

[0037] The stator in the motor is mainly used to generate a rotating magnetic field, and the stator winding in the stator is the component that generates the magnetic field. The stator winding will generate a certain amount of heat in the process of generating the magnetic field. When the temperature of the stator winding is too high, it will affect the normal operation of the motor and even burn the motor. Therefore, in order to ensure the normal operation of the motor, some heat dissipation measures need to be taken to reduce the temperature of the stator winding.

[0038] Common cooling methods include oil-immersion cooling of the stator winding. In this case, a sealing cover can be used to wrap the stator winding to form a sealed cavity so that the stator winding can be immersed in cooling oil for cooling. However, the hairpin winding will have a part of the inward shrinkage area (i.e., the concave area described below), which will cause radial assembly interference problems. It is easy to cause the two ends of the sealing cover to fail to contact the stator end face when the sealing cover is installed. One end of the sealing cover may extend into the area of ​​the stator slot, resulting in the inability to form a sealed space. There is a risk of cooling oil leakage, thereby reducing the cooling effect of the stator winding.

[0039] In order to solve the above problems, the embodiment of the present application provides a motor 100 and a vehicle 1000. The motor 100 and the vehicle 1000 of the present application will be described in detail below:

[0040] See also Figure 1 , Figure 3 and Figure 5 The embodiment of the present application provides a motor 100, which includes a stator 10 and a cooling assembly 20. The stator 10 includes a stator winding 11 and a stator core 12, the stator winding 11 is connected to the stator core 12, and a concave area 111 is provided in a region close to a stator end surface 121 of the stator core 12 on a side of the stator winding 11 close to the central axis X1 of the stator. The cooling assembly 20 includes a plurality of seals 21, which are detachably connected and covered on the stator winding 11. The seals 21 are provided with a receiving cavity 211. The receiving cavities 211 of the plurality of seals 21 are connected. The stator end face 121 abuts against the seals 21 and blocks the opening of the receiving cavity 211 toward the stator end face 121 to form a sealed space 110. A sealing portion 2121 is provided in a first side wall 212 of the seal 21 close to the center axis X1 of the stator and in an area close to the stator end face 121. The sealing portion 2121 extends toward the receiving cavity 211 and corresponds to the recessed area 111.

[0041] Specifically, the motor 100 (Motor) is a device that converts electrical energy into mechanical energy. It uses an energized coil (i.e., a stator winding 11) to generate a rotating magnetic field and acts on a rotor (such as a squirrel-cage closed aluminum frame) to form a magneto-electrical power rotation torque.

[0042] The stator 10 is a device for generating a rotating magnetic field in the motor 100. The stator 10 includes a stator core 12 and a stator winding 11, and the stator winding 11 is installed at the end of the stator core 12. The stator winding 11 can generate a rotating magnetic field when power is supplied. The stator core 12 is a component constituting the magnetic circuit of the stator 10, and is made of silicon steel sheets coated with insulating paint on the surface, and is in the shape of a circular ring. The stator core 12 includes a stator end face 121 and a stator slot 122, and the stator end face 121 is connected to the stator slot 122, and the distance between the stator slot 122 and the central axis X1 of the stator is smaller than the distance between the stator end face 121 and the central axis X1 of the stator. The stator end face 121 is mainly used to fix and support the stator winding 11. When the motor 100 is running, the stator end face 121 can ensure the stability of the position of the stator winding 11 and prevent it from being displaced or falling off during high-speed rotation, thereby ensuring the normal operation and stability of the motor 100. The stator slot 122 is a groove on the stator core 12, which is mainly used to place the coil. When current passes through the coil, a magnetic field is generated, which then interacts with the magnetic field on the rotor of the motor 100, causing the motor 100 to generate torque and drive the device to operate. Among them, in one side of the stator winding 11 close to the central axis X1 of the stator, the area close to the stator end face 121 is usually provided with a concave area 111, that is, the area extends in the direction of the central axis of the stator winding 11.

[0043] The cooling assembly 20 includes a plurality of seals 21, and a receiving cavity 211 is provided inside the seal 21. The receiving cavity 211 is provided with an opening toward the stator end surface 121, and the stator winding 11 can extend into the receiving cavity 211 through the opening, so that the seal 21 can be covered on the stator winding 11, and the end of the seal 21 close to the stator end surface 121 can contact the stator end surface 121, so that the stator end surface 121 can block the opening of the receiving cavity 211 toward the stator end surface 121. Among them, in the first side wall 212 of the seal 21 close to the central axis X1 of the stator, a sealing portion 2121 is provided in the area close to the stator end surface 121, and the sealing portion 2121 extends toward the receiving cavity 211, so that the shape and position of the sealing portion 2121 match the shape and position of the inner concave area 111. In the axial cross section of the stator 10 , the accommodating cavity 211 is further provided with a through opening, and the accommodating cavity 211 of the sealing member 21 is connected with the accommodating cavity 211 of other sealing members 21 by means of the through opening.

[0044] The plurality of seals 21 are detachably connected, and the detachable connection methods include but are not limited to threaded connection, snap connection and hinge connection. When installing the seals 21, each seal 21 is installed independently. Figure 3 First, the seal 21 can be buckled onto the stator winding 11 along the axial direction of the stator 10. At this time, the relative position between the stator winding 11 and the seal 21 is not limited, as long as the entire stator winding 11 is located in the accommodating cavity 211. It can be understood that at this time, the end of the seal 21 close to the stator end face 121 and the area close to the central axis X1 of the stator may not contact the stator end face 121, but extend into the stator slot 122. Then, the seal 21 can be pushed in a direction away from the central axis X1 of the stator to increase the contact area between the end of the seal 21 close to the stator end face 121 and the stator end face 121. The effect after the push is completed is as follows. Figure 4 shown.

[0045] The stator winding 11 is usually placed close to the center axis X1 of the stator, so the side of the stator winding 11 away from the center axis X1 of the stator is usually farther away from the edge of the stator end face 121 away from the center axis X1 of the stator. As long as the length of the sealing portion 2121 in the radial direction of the stator 10 is not too large, the end of the sealing portion 2121 close to the stator end face 121 and the area away from the center axis X1 of the stator will definitely contact the stator end face 121.

[0046] At the same time, since the shape of the sealing portion 2121 matches the shape and position of the recessed area 111, the sealing portion 2121 can fit the recessed area 111 to a greater extent after movement. In the radial direction of the stator 10, there is usually a distance between the edge of the recessed area 111 facing the center axis X1 of the stator and the edge of the stator end face 121 facing the center axis X1 of the stator. Therefore, when the sealing portion 2121 fits the recessed area 111 to a greater extent, it can be ensured that the sealing portion 2121 can stay in this middle area and contact with the stator end face 121, so that the stator end face 121 can block the opening of the accommodating cavity 211 toward the stator end face 121.

[0047] When each seal 21 is installed, that is, the sealing portion 2121 of each seal 21 is fitted with the inner concave area 111, multiple seals 21 are connected end to end. Then multiple seals 21 can be connected to fix multiple seals 21 and form a unified sealing device. At this time, the accommodating cavities 211 of all seals 21 are connected, and the sealing device can cover the entire stator winding 11. The stator end face 121 can contact the seal 21 and block the opening of the accommodating cavity 211 toward the stator end face 121 to form a sealed space 110. Connecting multiple seals 21 at the same time is also convenient for preventing the seal 21 from shifting. It should be noted that the shape of the sealing device matches the shape of the stator winding 11. For example, when the stator winding 11 is annular, the sealing device is usually also an annular device.

[0048] The seal 21 is usually also provided with an oil inlet and an oil outlet. After connecting multiple seals 21, cooling oil can be input into the sealed space 110 through the oil inlet. Since the stator end face 121 can completely cover the opening of the sealed space 110, the sealing effect of the sealed space 110 is better, and the risk of leakage of the cooling oil is lower. Therefore, the oil level of the cooling oil in the accommodating cavity 211 can rise to a higher height, and even the cooling oil fills or almost fills the entire accommodating cavity 211, so that the cooling oil can wrap the stator winding 11 in the accommodating cavity 211 and dissipate the heat of the stator winding 11, so as to increase the heat dissipation area of ​​the stator winding 11, thereby facilitating the improvement of the heat dissipation efficiency of the stator winding 11, and thus ensuring the sustainable normal operation of the motor 100. At the same time, the separate installation of multiple seals 21 can also realize the safe assembly of the seal 21, ensuring that the seal 21 or the stator winding 11 will not be damaged during the installation of the seal 21.

[0049] When the stator winding 11 or the seal 21 needs to be repaired, it is only necessary to release the connection of the seal 21, and then move the seal 21 toward the direction close to the center axis to remove the seal 21, thereby facilitating the repair or replacement of the stator winding 11 or the seal 21.

[0050] The motor 100 of the embodiment of the present application includes a stator 10 and a cooling assembly 20, and the cooling assembly 20 includes a plurality of seals 21, and the plurality of seals 21 are detachably connected, and the plurality of seals 21 can cover the stator winding 11 of the stator 10. In one side of the stator winding 11 close to the central axis X1 of the stator, the area close to the stator end face 121 is provided with a concave area 111, and at the same time, in the first side wall 212 of the seal 21 close to the central axis X1 of the stator, the area close to the stator end face 121 is provided with a sealing portion 2121, and the sealing portion 2121 extends toward the accommodating cavity 211, so that the shape and position of the sealing portion 2121 and the concave area 111 are matched. Therefore, each seal 21 can be installed independently when installing the seal 21. First, the seal 21 is randomly covered on the stator winding 11, and it is ensured that the stator winding 11 is located in the accommodating cavity 211. Then, the seal 21 can be pushed along the central axis X1 of the stator toward the stator end face 121. Since the shape and position of the seal portion 2121 and the concave area 111 match, the seal portion 2121 can contact the stator end face 121, so that the stator end face 121 can block the opening of the accommodating cavity 211 toward the stator end face 121. After each seal 21 is installed, multiple seals 21 can be connected. The accommodating cavities 211 of the multiple seals 21 are connected, and the seals 21 are in contact with the stator end face 121, so that a sealed space 110 is formed between the multiple seals 21 and the stator end face 121, and the sealing effect of the sealed space 110 is better. Therefore, after the cooling oil is injected into the sealed space 110, the risk of leakage of the cooling oil is small, so that the cooling oil can wrap the stator winding 11 and effectively dissipate the heat of the stator winding 11, thereby facilitating the improvement of the heat dissipation efficiency of the stator winding 11, and further facilitating the normal operation of the motor 100.

[0051] See also Figure 3 and Figure 5In some embodiments, along the radial direction of the stator 10, the width of the accommodating cavity 211 is greater than the width of the stator winding 11. In this way, it can be ensured that in the first step of the installation step, when the seal 21 is covered on the stator winding 11, there is sufficient space in the accommodating cavity 211, and the side wall of the seal 21 will not contact the stator winding 11. At the same time, it can also be ensured that after the seal 21 is covered on the stator winding 11, there is sufficient space in the accommodating cavity 211 for the seal 21 to move without damaging the stator winding 11 and the seal 21, so that the sealing portion 2121 can fit the inner concave area 111 as much as possible. That is to say, along the radial direction of the stator 10, the width of the accommodating cavity 211 is greater than the width of the stator winding 11, which can ensure that the sealing portion 2121 can move to the area that fits with the recessed area 111, so that the seal 21 and the stator end face 121 can form a sealed space 110. At the same time, it can ensure that the seal 21 and the stator winding 11 will not contact each other during the movement of the seal 21, thereby ensuring the safety of the seal 21 and the stator winding 11.

[0052] See also Figure 3 and Figure 5 In some embodiments, along the radial direction of the stator 10, the width of the sealing portion 2121 is less than or equal to the distance between the side of the stator winding 11 close to the central axis X1 of the stator and the side of the stator end surface 121 close to the central axis X1 of the stator. In this way, when the sealing portion 2121 is moved in a direction away from the central axis X1 of the stator so that the sealing portion 2121 fits the stator winding 11 as closely as possible, it is ensured that there is sufficient space between the edge of the stator winding 11 and the edge of the stator end surface 121 for the sealing portion 2121 to stay, thereby ensuring that the sealing portion 2121 can contact the stator end surface 121 after moving, and further ensuring that a sealed space 110 can be formed between the seal 21 and the stator end surface 121.

[0053] See also Figure 4 In some embodiments, the first side wall 212 includes a side wall body 2122, and the side wall body 2122 is connected to the sealing portion 2121. The positional relationship between the side of the sealing portion 2121 facing the central axis X1 of the stator and the side of the side wall body 2122 facing the central axis X1 of the stator can be various.

[0054] In some embodiments, the side of the sealing portion 2121 facing the central axis X1 of the stator is flush with the side of the side wall body 2122 facing the central axis X1 of the stator, that is, the outer surface of the first side wall 212 will not form a depression. It is only necessary to ensure that the sealing portion 2121 can fit the concave area 111, the side of the sealing portion 2121 facing the concave area 111 can stably contact with the stator end face 121, and the stator end face 121 can block the opening of the accommodating cavity 211 toward the stator end face 121.

[0055] In other embodiments, the side of the sealing portion 2121 facing the center axis X1 of the stator is farther away from the center axis X1 of the stator than the side of the side wall body 2122 facing the center axis X1 of the stator, that is, the distance between the side of the sealing portion 2121 facing the center axis X1 of the stator and the center axis X1 of the stator is greater than the distance between the side of the side wall body 2122 facing the center axis X1 of the stator and the center axis X1 of the stator.

[0056] A stator cavity is formed inside the stator 10, and the rotor is installed in the stator cavity. After the rotor is assembled with the stator 10, some areas of the rotor may be located relatively close to the areas of the insulator 13 of the stator 10. The insulator 13 of the stator 10 is located between the stator end face 121 and the stator winding 11, that is, the sealing portion 2121 also corresponds to the insulator 13. After the sealing portion 2121 is extended, the side of the sealing portion 2121 facing the central axis X1 of the stator is farther from the central axis X1 of the stator than the side of the side wall body 2122 facing the central axis X1 of the stator, that is, the distance between the sealing portion 2121 and the central axis X1 of the stator is farther, so that the sealing portion 2121 is provided with an avoidance space for the rotor to avoid the rotor, thereby ensuring that the stator 10 and the rotor will not interfere with each other.

[0057] See also Figure 4 and Figure 5 In some embodiments, the seal 21 also includes a second side wall 214 and a top plate 213, the two ends of the top plate 213 are respectively connected to the first side wall 212 and the second side wall 214, the distance between the second side wall 214 and the central axis X1 of the stator is greater than the distance between the first side wall 212 and the central axis X1 of the stator. It can be understood that the first side wall 212 is the inner circle portion, the second side wall 214 is the outer circle portion, the top plate 213, the first side wall 212 and the second side wall 214 together form a accommodating cavity 211, and the stator winding 11 is located in the accommodating cavity 211.

[0058] When all the seals 21 are connected, the through openings of each accommodating cavity 211 are connected. When all the seals 21 are connected to form a whole, there is only one opening of the sealed space 110 formed by the plurality of accommodating cavities 211 being connected, and the sealing portion 2121 corresponds to the recessed area 111, so the stator end face 121 can completely cover the opening. This ensures that the entire stator winding 11 can be located in the accommodating cavity 211 and the sealing effect of the sealed space 110 is better.

[0059] At this time, the shapes of the first side wall 212 and the second side wall 214 match the shape of the winding. For example, when the winding is annular, the first side wall 212 and the second side wall 214 are arc-shaped, and the length of the first side wall 212 is less than the length of the second side wall 214. When the winding is rectangular, the first side wall 212 and the second side wall 214 are linear, and the length of the first side wall 212 is equal to the length of the second side wall 214.

[0060] In this way, it can be ensured that there is only one opening in the sealed space 110, and the stator winding 11 can extend into the sealed space 110 through the opening. At the same time, the opening of the sealed space 110 can be completely blocked by the stator end face 121 to ensure that the cooling oil will not leak from the sealed space 110, thereby improving the heat dissipation effect of the cooling oil on the stator winding 11.

[0061] See also Figure 4 and Figure 5 In some embodiments, the stator core 12 includes a stator slot 122 , which is connected to the stator end surface 121 , and a sealing tooth 2123 extending along the central axis X1 of the stator is provided at the bottom of the first side wall 212 , and the sealing tooth 2123 is used to combine with the stator slot 122 .

[0062] Specifically, a groove extending along the central axis X1 of the stator may be formed in the stator slot 122, and a sealing tooth 2123 extending along the central axis X1 of the stator is provided at the bottom of the first side wall 212. In addition, in the axial direction of the stator 10, the cross-sectional area and shape of the groove of the stator slot 122 match the area and shape of the sealing tooth 2123, so that during the installation of the seal 21, the sealing tooth 2123 can be combined with the groove of the stator slot 122 and seal the stator slot 122. In this way, the provision of the sealing tooth 2123 can improve the sealing effect of the stator slot 122, thereby further reducing the possibility of leakage of the cooling oil.

[0063] See also Figure 1 and Figure 5 In some embodiments, a stopper 2141 is provided on the outer surface of the second side wall 214, and a coupling member 123 is provided on the outer surface of the stator 10, for example, a coupling member 123 is provided at the end of the outer surface of the stator core 12, so as to reduce the distance between the coupling member 123 and the stopper 2141. The number of the stopper 2141 and the coupling member 123 can be one or more, for example, 1, 3 or 5, and the number of the stopper 2141 and the number of the coupling member 123 are equal.

[0064] The stopper 2141 is used to be combined with the coupling member 123. In the radial direction of the stator 10, the distance between the stopper 2141 and the first side wall 212 needs to be determined according to the length of the stator end face 121 and the position of the stator winding 11 on the stator end face 121, so as to ensure that the stopper 2141 can be combined with the coupling member 123 when the sealing portion 2121 is in contact with the inner concave area 111 and the first side wall 212 and the second side wall 214 are in contact with the stator end face 121. When the stopper 2141 and the coupling member 123 are combined, the coupling member 123 can limit the movement of the stopper 2141 in the direction of the central axis X1 of the stator, so as to limit the movement of the second side wall 214 and even the sealing member 21 in the direction of the central axis X1 of the stator, thereby fixing the second side wall 214 and even the entire sealing member 21 to limit the axial displacement of the sealing member 21.

[0065] See also Figures 1 to 3 In some embodiments, the cooling assembly 20 includes a boss 30. In the top plate 213 of each sealing member 21, a boss 30 is provided on a side facing away from the accommodating cavity 211. The cooling assembly 20 is also provided with a fixing member 22. A groove is formed inside the fixing member 22. The size of the groove of the fixing member 22 matches the size of the boss 30. For example, the length, width and height of the two are matched, so that the boss 30 can extend into the groove of the fixing member 22. After the boss 30 extends into the groove of the fixing member 22, the fixing member 22 can be stably covered on the boss 30, and the fixing member 22 can be used to limit the movement of the boss 30, thereby limiting the movement of the sealing member 21. For example Figure 2 This is a scene diagram when the fixings and bosses are not installed. Figure 1 A scene diagram showing a fixing cover being arranged on a boss.

[0066] The shape of the fixing member 22 matches the shape of the bosses 30 of all the sealing members 21 after all the sealing members 21 are installed in place. For example, when all the bosses 30 are ring-shaped after being connected, the shape of the fixing member 22 is also ring-shaped, so that the fixing member 22 covers the bosses 30 of all the sealing members 21, thereby connecting all the sealing members 21 and limiting the movement of the sealing members 21.

[0067] It should be noted that, along the axial direction of the stator 10, the fixing part 22 can cover the entire area of ​​the boss 30 and abut against the top plate 213, or the fixing part 22 can only cover a partial area of ​​the boss 30. In this case, the height of the fixing part 22 is less than the height of the boss 30, and the fixing part 22 does not abut against the top plate 213. It is only necessary to ensure that after the fixing part 22 covers the boss 30, the fixing part 22 can be stably connected to the seal 21 and stably limit the movement of the seal 21.

[0068] Therefore, after all the seals 21 are installed in place, it is only necessary to cover the fixing member 22 on the boss 30 to complete the connection of all the seals 21 and limit the movement of the seals 21, thereby preventing the seals 21 from scattering.

[0069] In this way, the boss 30 and the fixing member 22 can be used to achieve a detachable connection between multiple seals 21, ensuring that the multiple seals 21 can be installed independently, and after being installed in place, the boss 30 and the fixing member 22 can be used to connect and fix the multiple seals 21, thereby preventing the seals 21 from shifting or scattering, and at the same time ensuring that the relative positions between the multiple seals 21 and the stator end face 121 are fixed, that is, the first side wall 212 and the second side wall 214 of the multiple seals 21 are always in contact with the stator end face 121, thereby ensuring the sealing effect of the sealed space 110, reducing the possibility of leakage of the cooling oil, and further ensuring the heat dissipation effect of the stator winding 11.

[0070] See also Figure 1 , Figure 3 and Figure 7 In some embodiments, the boss 30 includes a first boss 31 and a second boss 32, the first boss 31 is connected to the second boss 32, and in the axial direction of the stator 10, the height of the first boss 31 is greater than the height of the second boss 32, and each seal 21 is provided with at least one of the first boss 31 and the second boss 32. Each seal 21 is provided with at least one of the first boss 31 and the second boss 32, that is, each seal 21 may be provided with only the first boss 31, only the second boss 32, or both the first boss 31 and the second boss 32.

[0071] The fixing member 22 includes a first fixing portion 221 and a second fixing portion 222. The first fixing portion 221 is connected to the second fixing portion 222, and in the axial direction of the stator 10, the height of the first fixing portion 221 is greater than the height of the second fixing portion 222. The first fixing portion 221 is covered on the first boss 31, and the second fixing portion 222 is covered on the second boss 32.

[0072] Specifically, the motor 100 further includes a housing, and the cooling assembly 20 and the stator 10 are both installed inside the housing. After installation, the top plate 213 in the cooling assembly 20 is opposite to the end cover in the housing, and the heights of various regions on the side of the end cover facing the cooling assembly 20 are different. Therefore, in the case where the boss 30 and the fixing member 22 are used to connect multiple sealing members 21, in order to prevent the cooling assembly 20 and the end cover from contacting each other, the top plate 213 of the cooling assembly 20 may also be provided with bosses 30 of different heights.

[0073] The boss 30 is provided with a first boss 31 and a second boss 32, the first boss 31 is connected to the second boss 32, and the height between the top end of the first boss 31 and the top plate 213 is greater than the height between the top end of the second boss 32 and the top plate 213, that is, in the axial height of the stator 10, the height of the first boss 31 is higher than the second boss 32, each seal 21 is provided with at least one of the first boss 31 and the second boss 32, and multiple first bosses 31 are continuous, and multiple second bosses 32 are continuous.

[0074] Correspondingly, the fixing member 22 includes a first fixing portion 221 and a second fixing portion 222, the first fixing portion 221 is connected to the second fixing portion 222, and the height between the top end of the first fixing portion 221 and the top plate 213 is greater than the height between the top end of the second fixing portion 222 and the top plate 213, that is, in the axial height of the stator 10, the height of the first fixing portion 221 is higher than the second fixing portion 222, and multiple first fixing portions 221 are continuous, and multiple second fixing portions 222 are continuous.

[0075] The size of the groove 2211 formed inside the first fixing portion 221 matches the size of the first boss 31, and the size of the groove 2221 formed inside the second fixing portion 222 matches the size of the second boss 32, so that the first fixing portion 221 can be covered on the first boss 31, and the second fixing portion 222 can be covered on the second boss 32. The first fixing member 22 can be used to limit the movement of the first boss 31, and the second fixing member 22 can be used to limit the movement of the second boss 32, so that the first fixing member 22 and the second fixing member 22 can be used to limit the movement of the sealing member 21 and connect all the sealing members 21.

[0076] It should be noted that when the device assembled with the stator 10 and the cooling component 20 is installed in the shell, the relative positions of the first fixing portion 221 and the second fixing portion 222 and the end cover need to be determined according to the height of the end cover toward each area in the cooling component 20 to ensure that there is sufficient distance between the cooling component 20 and the end cover to prevent interference and collision between the two during operation.

[0077] In this way, by providing the first boss 31 and the second boss 32 of different heights on the seal 21, and providing the first fixing part 221 and the second fixing part 222 of different heights on the fixing part, it can ensure that the fixing part 22 and the seal 21 can be connected smoothly on the one hand, thereby ensuring that the fixing part 22 can connect all the seals 21, and limit the movement of the seal 21 to prevent the seal 21 from scattering, and on the other hand, ensure that after the device after the stator 10 and the cooling component 20 are assembled is installed in the housing, there is a sufficient distance between the cooling component 20 and the end cover, thereby ensuring the safety between the cooling component 20 and the end cover during the operation of the motor 100. At the same time, since the device after the stator 10 and the cooling component 20 are assembled can itself prevent the interference between the cooling component 20 and the end cover during the operation, it is not necessary to set an additional avoidance space between the cooling component 20 and the end cover at this time, which is conducive to alleviating the space compactness problem inside the housing of the motor 100.

[0078] See also Figure 1 , Figure 3 , Figure 7 and Figure 8 In some embodiments, the fixing member 22 further includes a reinforcing rib 223 , and the reinforcing rib 223 is installed between the first fixing portion 221 and the second fixing portion 222 .

[0079] Specifically, there is a certain height difference between the first fixing portion 221 and the second fixing portion 222. At this time, the load that the connection surface between the first fixing portion 221 and the second fixing portion 222 can withstand is limited. Therefore, reinforcing ribs 223 can be set on the connection surface to increase the strength of the connection surface, thereby increasing the strength of the fixing member 22 and ensuring that the fixing member 22 can be stably covered on the boss 30.

[0080] See also Figure 2 and Figure 3 In some embodiments, in the axial direction of the stator 10 , the tops of various regions of the boss 30 have the same height, the tops of various regions of the fixing portion have the same height, and the fixing portion is covered on the boss 30 .

[0081] Specifically, the various areas of the boss 30 may not be set with height differences, and correspondingly, the various areas of the fixing part may not be set with height differences, that is, the heights of the tops of the various areas of the boss 30 are consistent, and the heights of the tops of the fixing parts are consistent. As long as the sizes of the fixing part and the boss 30 are matched, the fixing part can be stably covered on the boss 30, so that the fixing part can stably connect all the seals 21 and limit the movement of the seals 21.

[0082] In this way, when there is sufficient space inside the motor 100, an avoidance space can be directly set between the device after the stator 10 and the cooling assembly 20 are assembled and the end cover of the motor 100. At this time, the height difference may not be set in various areas of the boss 30, and the height difference may not be set in various areas of the fixing part. This can simplify the manufacturing process of the fixing part and the boss 30 while ensuring that the fixing part and the boss 30 can be stably combined.

[0083] See also Figure 4 and Figure 6 In some embodiments, the cooling assembly 20 includes a snap-fit ​​member 50 and a snap-fit ​​member 60. The snap-fit ​​member 50 is provided with a notch. The notch of the snap-fit ​​member 50 is used to be combined with the snap-fit ​​member 60. The combination and separation between the notch and the snap-fit ​​member 60 can be controlled by controlling the movement of the notch, that is, the notch can be selectively combined with the snap-fit ​​member 60. Therefore, the snap-fit ​​member 50 and the snap-fit ​​member 60 can be used to realize a detachable connection between multiple sealing members 21.

[0084] Since the seal 21 needs to be connected end to end, at least two elements (the elements are the engaging element 50 or the snap element 60) are provided on the seal 21 for connecting with other seals 21. The types of elements are not limited, and the outer surface of the seal 21 is provided with at least one of the engaging element 50 and the snap element 60. For example, the outer surface of a seal 21 may be provided with only the engaging element 50, only the snap element 60, or both the engaging element 50 and the snap element 60.

[0085] Among the two adjacent seals 21, the engaging member 50 is rotatably installed on the outer surface of one of them, and the outer surface of the other one is provided with a engaging member 60 extending from the outer surface in a direction away from the accommodating cavity 211. The positions of the engaging member 50 and the engaging member 60 of the two adjacent seals 21 correspond to each other, so that the corresponding engaging member 50 and the engaging member 60 can be used to connect the two adjacent seals 21.

[0086] Therefore, after all the seals 21 are installed in place (i.e., after the first side walls 212 and the second side walls 214 of all the seals 21 are in contact with the stator end surface 121), the engaging members 50 on the seals 21 can be rotated to connect with the corresponding snap members 60, thereby connecting all the seals 21. When it is necessary to release the connection between the seals 21, it is only necessary to rotate the engaging members 50 on the seals 21 to contact with the connection on the corresponding engaging members 50.

[0087] In this way, the snap-fitting parts 50 and the snap-fitting parts 60 can be used to realize a detachable connection between the multiple seals 21, ensuring that the multiple seals 21 can be installed independently, and after being installed in place, the snap-fitting parts 50 and the snap-fitting parts 60 can be used to connect the multiple seals 21, thereby preventing the seals 21 from shifting, and at the same time ensuring that the relative positions between the multiple seals 21 and the stator end face 121 are fixed, that is, the first side walls 212 and the second side walls 214 of the multiple seals 21 are always in contact with the stator end face 121, thereby ensuring the sealing effect of the sealed space 110, reducing the possibility of leakage of the cooling oil, and further ensuring the heat dissipation effect of the stator winding 11.

[0088] See also Figure 1 , Figure 4 and Fig. 9 The vehicle 1000 of the embodiment of the present application includes the motor 100 described in any of the above embodiments.

[0089] Specifically, the motor 100 is used to power other devices of the vehicle 1000, such as lights or screens. The motor 100 includes a stator 10 and a cooling assembly 20, and the cooling assembly 20 includes a plurality of seals 21, and each seal 21 is provided with a sealing portion 2121 corresponding to the inner recessed area 111 of the stator winding 11. Therefore, each seal 21 can be installed independently, and the seal 21 can be moved relative to the stator end face 121, so that the sealing portion 2121 can fit the inner recessed area 111 of the stator winding 11 as closely as possible, so that the stator end face 121 can cover the opening of the accommodating cavity 211 in the seal 21 toward the stator end face 121, and a sealed space 110 can be formed between the seal 21 and the stator end face 121. The vehicle 1000 can inject cooling oil into the sealed space 110 to cool the stator winding 11 to ensure that the temperature of the stator winding 11 is not too high during operation and the stator winding 11 can always operate normally, thereby ensuring that the motor 100 can stably supply power to the vehicle 1000.

[0090] The motor 100 of the vehicle 1000 of the embodiment of the present application includes a stator 10 and a cooling assembly 20, and the cooling assembly 20 includes a plurality of seals 21, and the plurality of seals 21 are detachably connected, and the plurality of seals 21 can cover the stator winding 11 of the stator 10. In one side of the stator winding 11 close to the central axis X1 of the stator, the region close to the stator end face 121 is provided with an inner concave area 111, and at the same time, in the first side wall 212 of the seal 21 close to the central axis X1 of the stator, the region close to the stator end face 121 is provided with a sealing portion 2121, and the sealing portion 2121 extends toward the accommodating cavity 211, so that the shape and position of the sealing portion 2121 and the inner concave area 111 are matched. Therefore, when installing the seal 21, each seal 21 can be installed independently. First, the seal 21 is randomly covered on the stator winding 11. Then the seal 21 can be pushed along the central axis X1 of the stator toward the stator end face 121. Since the shape and position of the seal portion 2121 and the concave area 111 match, the seal portion 2121 can contact the stator end face 121, so that the area of ​​the seal 21 close to the stator end face 121 after movement can be completely in contact with the stator end face 121. After each seal 21 is installed, multiple seals 21 can be connected, and the accommodating cavities 211 of the multiple seals 21 are connected, and the seals 21 are completely in contact with the stator end face 121, so as to form a sealed space 110 between the multiple seals 21 and the stator end face 121, and the sealing effect of the sealed space 110 is better. Therefore, after the cooling oil is injected into the sealed space 110, the risk of leakage of the cooling oil is small, so that the cooling oil can wrap the stator winding 11 and effectively dissipate the heat of the stator winding 11, thereby facilitating the improvement of the heat dissipation efficiency of the stator winding 11, thereby ensuring that the motor 100 can operate normally.

[0091] In the description of this specification, the descriptions with reference to the terms "certain embodiments", "in an example", "exemplarily", etc., mean that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0092] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0093] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A motor, characterized in that: include: A stator, the stator comprising a stator winding and a stator core, the stator winding being connected to the stator core, and a concave area being provided in a region close to a stator end face of the stator core on a side of the stator winding close to a central axis of the stator; A cooling component, wherein the cooling component includes a plurality of seals, the plurality of seals are detachably connected, the plurality of seals are covered on the stator winding, the seals are provided with a receiving cavity, the receiving cavities of the plurality of seals are connected, the stator end face abuts against the seals and blocks the opening of the receiving cavity toward the stator end face to form a sealed space, a sealing portion is provided in a first side wall of the seal close to the central axis of the stator and a region close to the stator end face, the sealing portion extends toward the receiving cavity, and the sealing portion corresponds to the concave area.

2. The motor according to claim 1, characterized in that: Along the radial direction of the stator, the length of the accommodating cavity is greater than the length of the stator winding.

3. The motor according to claim 1, characterized in that Along the radial direction of the stator, the width of the sealing portion is less than or equal to the distance between a side of the stator winding close to the central axis of the stator and a side of the stator end surface close to the central axis of the stator.

4. The motor according to claim 1, characterized in that The first side wall includes a side wall body, the side wall body is connected to the sealing portion, and a side of the sealing portion facing the central axis of the stator is farther away from the central axis of the stator than a side of the side wall body facing the central axis of the stator.

5. The motor according to claim 1, characterized in that The seal also includes a second side wall and a top plate, wherein two ends of the top plate are respectively connected to the first side wall and the second side wall, and the top plate, the first side wall and the second side wall together form an accommodating cavity, wherein the stator winding is located in the accommodating cavity, wherein the distance between the second side wall and the central axis of the stator is greater than the distance between the first side wall and the central axis of the stator.

6. The motor according to claim 5, characterized in that The stator core includes a stator slot connected to the stator end surface. The bottom of the first side wall is provided with a sealing tooth extending along the central axis direction of the stator. The sealing tooth is used to combine with the stator slot to seal the stator slot.

7. The motor according to claim 5, characterized in that A limiting piece is disposed on the outer surface of the second side wall, and a combining piece is disposed on the outer surface of the stator core. The limiting piece is used to be combined with the combining piece to fix the second side wall.

8. The motor according to claim 1, characterized in that The cooling assembly includes a boss, and a boss is provided on a side of the top plate of each seal facing away from the accommodating cavity. The cooling assembly is also provided with a fixing member, and the fixing member covers the bosses of all the seals, and the sizes of the boss and the fixing member match so that all the seals are connected.

9. The motor according to claim 8, characterized in that The boss is provided with a first boss and a second boss, the first boss is connected to the second boss, and in the axial direction of the stator, the height of the first boss is greater than the height of the second boss, and each of the sealing members is provided with at least one of the first boss and the second boss; The fixing member includes a first fixing portion and a second fixing portion, the first fixing portion is connected to the second fixing portion, and in the axial direction of the stator, the height of the first fixing portion is greater than the height of the second fixing portion, the first fixing portion is covered on the first boss, and the second fixing portion is covered on the second boss.

10. The motor according to claim 9, characterized in that The fixing member further includes a reinforcing rib installed between the first fixing portion and the second fixing portion.

11. The motor according to claim 8, characterized in that In the axial direction of the stator, the tops of the various regions of the boss have the same height, the tops of the various regions of the fixing portion have the same height, and the fixing portion is covered on the boss.

12. The motor according to claim 1, characterized in that The cooling component includes a snap-fit ​​piece and a snap-fit ​​piece, the snap-fit ​​piece is provided with a recess, and the recess is used to combine with the snap-fit ​​piece. The outer surface of the seal is provided with at least one of the snap-fit ​​piece and the snap-fit ​​piece. Among the two adjacent seals, the snap-fit ​​piece can be rotatably installed on the outer surface of one of them, and the outer surface of the other is provided with a snap-fit ​​piece extending from the outer surface toward a direction away from the accommodating cavity. The positions of the snap-fit ​​pieces and the snap-fit ​​pieces of the two adjacent seals correspond to each other, so that the two adjacent seals can be connected by using the corresponding snap-fit ​​pieces and the snap-fit ​​pieces.

13. A vehicle, characterized in that: include: A motor as claimed in any one of claims 1 to 12.

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