CN117060614A - Stator assembly and motorized equipment - Google Patents

Abstract

The application provides a stator assembly and a motor-driven device. The stator assembly comprises a stator winding and at least one stator core group, wherein the stator core group is sleeved on the stator winding and works in cooperation with the stator winding to convert a rotating magnetic field into current. Wherein, every stator core group can include two at least iron core structures, and every iron core structure has all seted up the oil guide hole, simultaneously, in two at least iron core structures, the oil guide hole of every iron core structure and the oil guide hole intercommunication setting each other of another iron core structure adjacent to it. It can be appreciated that at least two core structures can form an oil guide channel for flowing cooling oil to realize an oil cooling effect on the stator winding, and can further improve the cooling effect of the cooling oil on the stator winding by extending the cooling oil flow path. Meanwhile, the oil guide channel is divided into a plurality of sections, so that a plurality of iron core structures can be combined according to actual requirements to form a stator iron core group with corresponding size, and the manufacturing cost is saved.

Description

Stator assembly and motorized equipment

Technical Field

The application relates to the technical field of motor equipment parts, in particular to a stator assembly and motor equipment.

Background

Nowadays, with the vigorous development of new energy electric vehicles, the requirement for the performance of a driving motor serving as a power supply unit of the new energy electric vehicle is also becoming severe. From the technical development of the motor, the development trend of high power density and high speed of the motor makes the motor adopting oil cooling heat dissipation a necessary choice. The good motor stator oil cooling structure can effectively take away heat generated by the stator iron core and the stator winding, reduce the temperature of the motor and ensure the running reliability and performance output of the motor.

However, in the related art, the oil passages of the oil passage structure of the stator of the motor are generally integrally formed, but the sizes of the stator windings are not uniform, which results in that the stator assembly needs to design different oil passages according to the stator windings with different sizes to realize the oil cooling effect on the stator windings, so that the manufacturing cost is too high.

Disclosure of Invention

The embodiment of the application provides a stator assembly and motor equipment, which are used for solving the problem that the manufacturing cost is too high because different oil channels are required to be designed according to stator windings with different sizes by the stator assembly due to the fact that the size of an oil channel of an existing motor stator oil circuit structure is fixed.

In a first aspect, embodiments of the present application provide a stator assembly comprising:

a stator winding; and

at least one stator core set, the said stator core set is set up in the said stator winding; wherein each of the stator core groups includes:

at least two iron core structures, at least two iron core structures are assembled to form a stator iron core group, and each iron core structure is provided with an oil guide hole; in at least two iron core structures, the oil guide hole of each iron core structure is communicated with the oil guide hole of the other adjacent iron core structure.

In an embodiment, at least two the iron core structure includes first iron core structure, second iron core structure, third iron core structure and fourth iron core structure, first iron core structure the second iron core structure the third iron core structure and fourth iron core structure is followed stator winding's centre section extremely stator winding's tip direction is laminating connection in proper order and is set up, and a plurality of the oil guide hole all is located one side setting near the iron core structure outer circumference.

In an embodiment, the second core structure includes a plurality of second stator laminations, and each two of the second stator laminations are arranged in a staggered manner, so that oil holes on each two of the second stator laminations are partially overlapped.

In an embodiment, the third core structure includes at least one third stator punching sheet, and the oil guiding hole on each third stator punching sheet is a T-shaped oil guiding hole, where the T-shaped oil guiding hole includes a communicating hole and a guiding portion that are mutually communicated, the communicating hole is used for communicating with the oil guiding hole on the second stator punching sheet, and the guiding portion is located inside the communicating hole in a radial direction of the third stator punching sheet.

In an embodiment, the number of the T-shaped oil guiding holes and the number of the oil guiding holes on the second stator punching sheet are all multiple, the T-shaped oil guiding holes are distributed at intervals on one side close to the outer circumference of the third iron core structure, the oil guiding holes on the second stator punching sheet are distributed at intervals on one side close to the outer circumference of the second stator punching sheet, and the aperture of each communication hole along the interval distribution direction is larger than the aperture of each oil guiding hole on the second stator punching sheet along the interval distribution direction.

In an embodiment, the fourth core structure includes a fourth stator punching sheet and a fifth stator punching sheet, the fifth stator punching sheet is attached to one side of the fourth stator punching sheet away from the T-shaped oil guiding hole, the fourth stator punching sheet and the fifth stator punching sheet are both provided with a plurality of third oil guiding holes and a plurality of fourth oil guiding holes, the third oil guiding holes and the fourth oil guiding holes are alternately arranged one by one, the third oil guiding holes are communicated with the T-shaped oil guiding holes, and the distance between the third oil guiding holes and the end part of the stator winding is greater than the distance between the fourth oil guiding holes and the end part of the stator winding, wherein the fourth stator punching sheet and the fifth stator punching sheet are arranged in a dislocation mode, so that the third oil guiding holes of the fourth stator punching sheet and the fourth oil guiding holes of the fifth stator punching sheet are communicated with the T-shaped oil guiding holes to form a stepped channel.

In an embodiment, the number of the stator core groups is two, two oil inlet grooves communicated with the oil guide holes of the stator core groups are formed in the first core structures of the stator core groups, the two first core structures are arranged in a staggered mode so that the two oil inlet grooves form Z-shaped oil inlet grooves, and the second core structures, the third core structures and the fourth core structures of the stator core groups are arranged in a mirror image mode.

In an embodiment, the outer surface of the first core structure, the outer surface of the second core structure, the outer surface of the third core structure and the outer surface of the fourth core structure are provided with welding grooves, and the welding grooves are in one-to-one communication.

In an embodiment, each iron core structure includes a plurality of stator teeth and a plurality of stator slots, each two adjacent iron core structures are assembled one by one through the plurality of stator teeth and the plurality of stator slots to form a plurality of stator connecting structures, and the number of oil guide holes of each iron core structure is a plurality, wherein the number of oil guide holes of the first iron core structure and the number of oil guide holes of the second iron core structure are larger than the number of stator connecting structures; the number of the T-shaped oil guide holes is smaller than that of the stator connecting structures; the number of oil guide holes in the fourth iron core structure is equal to the number of stator connecting structures.

In a second aspect, embodiments of the present application also provide a motorized apparatus, comprising:

the shell is internally provided with an installation area;

and the driving motor comprises the stator assembly in any embodiment, and the driving motor is arranged in the mounting area.

The stator assembly provided by the embodiment of the application comprises a stator winding and at least one stator core group, wherein the stator core group is sleeved on the stator winding and is matched with the stator winding to convert a rotating magnetic field into current. Wherein, every stator core group can include two at least iron core structures, and every iron core structure has all seted up the oil guide hole, simultaneously, in two at least iron core structures, the oil guide hole of every iron core structure and the oil guide hole intercommunication setting each other of another iron core structure adjacent to it.

It can be understood that when the at least two core structures are assembled in pairs to form the stator core group, and the oil guide holes of the at least two core structures are mutually communicated, the at least two core structures can form an oil guide channel for flowing cooling oil so as to realize an oil cooling effect on the stator winding, and the plurality of core structures are communicated to form the oil guide channel which is compared with the oil guide channel with a specific size, the cooling effect of the cooling oil on the stator winding can be further improved by prolonging the cooling oil flow path.

Meanwhile, the oil guide channel is divided into a plurality of sections, so that when oil cooling and heat dissipation are needed to be carried out on stator windings with different sizes, a plurality of iron core structures can be combined according to actual requirements to form a stator iron core group with corresponding sizes, the problem that a plurality of stator iron core dies are required to be arranged for a plurality of stator windings with different sizes when a stator assembly is manufactured is avoided, and the manufacturing cost is further saved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is evident that the figures in the following description are only some embodiments of the application, from which other figures can be obtained without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of an overall structure of a stator assembly according to an embodiment of the present application.

Fig. 2 is a schematic front view of a first core structure of the stator assembly shown in fig. 1.

Fig. 3 is a schematic overall structure of the assembled two first core structures in the stator assembly shown in fig. 1.

Fig. 4 is an enlarged schematic view of a portion a of the stator assembly shown in fig. 3.

Fig. 5 is an enlarged schematic view of a portion B of the stator assembly shown in fig. 3.

Fig. 6 is a schematic diagram of the overall structure of a second core structure in the stator assembly shown in fig. 1.

Fig. 7 is an enlarged schematic view of a portion C of the stator assembly shown in fig. 6.

Fig. 8 is a schematic front view of a third core structure of the stator assembly shown in fig. 1.

Fig. 9 is a schematic diagram of the overall structure of the stator assembly shown in fig. 1 after concealing the stator windings and the fourth core structure.

Fig. 10 is an enlarged schematic view of a portion D of the stator assembly shown in fig. 9.

Fig. 11 is a schematic front view of a fourth core structure in the stator assembly shown in fig. 1.

Fig. 12 is a schematic view of a fourth core structure of the stator assembly shown in fig. 1 from another perspective.

Fig. 13 is an enlarged schematic view of a portion E of the stator assembly shown in fig. 12.

Fig. 14 is a schematic view showing the overall structure of the stator assembly shown in fig. 1 after the third core structure and the fourth core structure are assembled.

Fig. 15 is an enlarged schematic view of a portion F of the stator assembly shown in fig. 14.

Reference numerals illustrate:

100. a stator assembly; 110. a stator winding; 120A, a first stator core group; 120B, a second stator core group; 121. a first core structure; 1211. a first stator punching sheet; 1212. a first oil guide hole; 122. a second core structure; 1221. a second stator lamination; 1222. a second oil guide hole; 123. a third core structure; 1231. a third stator punching sheet; 1232. t-shaped oil guide holes; 1233. a communication hole; 1234. a guide part; 124. a fourth core structure; 1241. a fourth stator lamination; 1242. a fifth stator lamination; 1243. a third oil guide hole; 1244. a fourth oil guide hole; 125A, a first oil inlet groove; 125B, a second oil inlet groove; 126. a weld groove; 127. stator teeth; 128. stator slot.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to fall within the scope of the application.

Nowadays, with the vigorous development of new energy electric vehicles, the requirement for the performance of a driving motor serving as a power supply unit of the new energy electric vehicle is also becoming severe. From the technical development of the motor, the development trend of high power density and high speed of the motor makes the motor adopting oil cooling heat dissipation a necessary choice. The good motor stator oil cooling structure can effectively take away heat generated by the stator iron core and the stator winding, reduce the temperature of the motor and ensure the running reliability and performance output of the motor.

However, in the related art, the oil passages of the oil passage structure of the stator of the motor are generally integrally formed, but the sizes of the stator windings are not uniform, which results in that the stator assembly needs to design different oil passages according to the stator windings with different sizes to realize the oil cooling effect on the stator windings, so that the manufacturing cost is too high.

Based on the above technical problems, the embodiment of the application provides a stator assembly 100, which can be applied to the technical field of driving motors. Specifically, referring to fig. 1, fig. 1 is a schematic diagram illustrating an overall structure of a stator assembly 100 according to an embodiment of the application.

As shown in fig. 1, in the present embodiment, the stator assembly 100 includes a stator winding 110 and at least one stator core set that is disposed around the stator winding 110 and cooperates with the stator winding 110 to convert a rotating magnetic field into an electric current.

With continued reference to fig. 1 in combination with fig. 2, fig. 2 is a schematic front view of the first core structure 121 in the stator assembly 100 shown in fig. 1. Wherein, every stator core group can include two at least iron core structures, and every iron core structure has all seted up the oil guide hole, simultaneously, in two at least iron core structures, the oil guide hole of every iron core structure and the oil guide hole intercommunication setting each other of another iron core structure adjacent to it.

It can be understood that when the at least two core structures are assembled in pairs to form the stator core assembly as shown in fig. 1, and the oil guiding holes of the at least two core structures are mutually communicated, the at least two core structures can form an oil guiding channel for flowing cooling oil, so as to achieve an oil cooling effect on the stator winding 110, and the plurality of core structures are communicated to form the oil guiding channel, compared with the oil guiding channel with a specific size, the cooling effect of the cooling oil on the stator winding 110 can be further improved by extending the cooling oil flowing path.

Meanwhile, since the oil guide channel is divided into a plurality of sections (i.e., a plurality of core structures), when the stator windings 110 with different sizes are required to be subjected to oil cooling and heat dissipation, the plurality of core structures can be combined according to actual requirements to form a stator core group with corresponding sizes, so that the problem that a plurality of stator core dies need to be opened for the plurality of stator windings 110 with different sizes when the stator assembly 100 is manufactured is avoided, and the manufacturing cost is further saved.

In some embodiments, as shown in fig. 1, the at least two core structures may include a first core structure 121, a second core structure 122, a third core structure 123, and a fourth core structure 124, wherein the first core structure 121, the second core structure 122, the third core structure 123, and the fourth core structure 124 are sequentially disposed in a lamination connection along a direction from a central section of the stator winding 110 to an end of the stator winding 110, so that cooling oil can flow along the direction from the central section of the stator winding 110 to the end of the stator winding 110 to dissipate heat of the stator winding 110; meanwhile, the plurality of oil guide holes are all arranged on one side close to the outer circumference of the iron core structure, so that the torque and the power loss rate of the first iron core structure 121, the second iron core structure 122, the third iron core structure 123 and the fourth iron core structure 124 can be greatly reduced, the magneto-electric conversion efficiency of the stator assembly 100 is further improved, and the problem that the oil guide holes are blocked by insulating paint can be better avoided when the stator assembly 100 is subjected to subsequent production of paint dropping or paint dipping processes.

Note that, in the present embodiment, the specific number of the first core structure 121, the second core structure 122, the third core structure 123, and the fourth core structure 124 is not limited, and each core structure may be formed by combining a plurality of stator laminations. In this embodiment, the first core structure 121 may have only one stator punching sheet (i.e., the first stator punching sheet 1211), and a plurality of first oil guide holes 1212 may be provided on a side of the first stator punching sheet 1211 near its outer circumference to implement a corresponding cooling oil guiding function.

By way of example, the at least one stator core group mentioned in the present embodiment may be a first stator core group 120A and a second stator core group 120B as shown in fig. 1; however, the present embodiment is not limited to a specific number of stator core groups, and for example, the plurality of first stator core groups 120A and the plurality of second stator core groups 120B may be assembled with each other to form the stator assembly 100.

Meanwhile, please continue to refer to fig. 1 in combination with fig. 3 and fig. 4, fig. 3 is a schematic diagram illustrating an overall structure of the assembled two first core structures in the stator assembly shown in fig. 1. Fig. 4 is an enlarged schematic view of a portion a of the stator assembly 100 shown in fig. 3.

As shown in fig. 1, 3 and 4, in another embodiment of the present application, the first core structure 121 of the first stator core group 120A (i.e., the first stator core plate 1211 of the first stator core group 120A) is provided with a first oil inlet groove 125A that is communicated with the oil guiding hole thereof (i.e., the first oil guiding hole 1212 of the first stator core group 120A), the first core structure 121 of the second stator core group 120B (i.e., the first stator core plate 1211 of the second stator core group 120B) is provided with a second oil inlet groove 125B that is communicated with the oil guiding hole thereof (i.e., the first oil guiding hole 1212 of the second stator core group 120B), and both the first oil inlet groove 125A and the second oil inlet groove 125B are used for guiding cooling oil into the stator assembly 100 to achieve the heat dissipation effect on the stator winding 110. The first stator punching sheet 1211 of the first stator core group 120A and the first stator punching sheet 1211 of the second stator core group 120B are connected in a staggered manner, so that the first oil inlet groove 125A and the second oil inlet groove 125B are arranged in a staggered manner and form a Z-shaped oil inlet groove.

Referring to fig. 5 in conjunction with fig. 1 and 4, fig. 5 is an enlarged schematic view of a portion B of the stator assembly 100 shown in fig. 3. It can be appreciated that, in the present embodiment, the Z-shaped oil inlet grooves formed after the first oil inlet groove 125A and the second oil inlet groove 125B are arranged in a staggered manner can enable the first oil inlet groove 125A and the second oil inlet groove 125B to form an inclined groove body, so that the cooling oil in the first oil inlet groove 125A flows toward the left side of the first stator punching sheet 1211 (this is the first stator punching sheet 1211 of the first stator core group 120A) under the action of gravity, and the cooling oil in the second oil inlet groove 125B flows toward the right side of the first stator punching sheet 1211 (this is the first stator punching sheet 1211 of the second stator core group 120B) under the action of gravity, and at the same time, because of the staggered arrangement between the two stator punching sheets, each two first oil guiding holes 1212 on the two stator punching sheets can be partially overlapped to achieve a communication effect, so that the cooling liquid can flow in the direction of arrow direction as shown in fig. 4 and flow through all the first oil guiding holes 1212. The present embodiment further enhances the oil cooling effect of the cooling oil on the stator winding 110 by accelerating the flow of the cooling oil and extending the flow path of the cooling oil, so as to ensure the high-load operation of the stator assembly 100.

It should be noted that, in the present embodiment, the first stator core 1211 located in the first stator core group 120A may rotate with the first stator core 1211 located in the second stator core group 120BDegree (where n is the number of stages of the stator assembly) to create a misalignment effect, when the number of pole slots of the stator assembly is 6 pole 54 slots, the first stator laminations 1211 positioned within the first stator core group 120A can be rotated 6.66 degrees with the first stator laminations 1211 positioned within the second stator core group 120B to create a misalignment effect.

In addition, referring to fig. 1, in the above embodiment, the second core structure 122, the third core structure 123 and the fourth core structure 124 of the two stator core groups may be arranged in mirror image, so that the cooling oil can flow along the direction from the central section of the stator winding 110 to the two ends of the stator winding 110 to dissipate heat of the stator winding 110, so as to further improve the cooling effect of the cooling oil on the stator assembly 100.

In some embodiments, as shown in fig. 1, the outer surface of the first core structure 121, the outer surface of the second core structure 122, the outer surface of the third core structure 123, and the outer surface of the fourth core structure 124 may be provided with welding grooves 126, and the plurality of welding grooves 126 are disposed in one-to-one communication to form a welding channel. It can be appreciated that, since the existing welding process generally forms the protruding portion on the welding surface after the welding is completed, the present embodiment sets a plurality of welding grooves 126, and the plurality of welding grooves 126 are arranged in a one-to-one communication manner to form a welding channel, so that not only the welding purpose between the four of the first core structure 121, the second core structure 122, the third core structure 123 and the fourth core structure 124 can be achieved, but also the appearance flatness and the appearance consistency of the four can be ensured.

In some embodiments, referring to fig. 6 and 7, fig. 6 is a schematic overall structure of the second core structure 122 in the stator assembly 100 shown in fig. 1, and fig. 7 is an enlarged schematic structure of a portion C of the stator assembly 100 shown in fig. 6.

As shown in fig. 6 and 7, in an embodiment, the second core structure 122 may include a plurality of second stator laminations 1221, and a plurality of second oil holes 1222 are formed in a side of each second stator lamination 1221 near an outer circumference thereof, and each two second stator laminations 1221 are adjacent to each other and are offset from each other, so that the oil holes on each two second stator laminations 1221 are partially overlapped to achieve a communication effect, so that the cooling liquid flowing from the first core structure 121 to the second core structure 122 can flow along the outer circumference direction of each second stator lamination 1221 and flow through all the second oil holes 1222 to achieve a heat dissipation effect on the stator winding 110 located in the area of the second core structure 122. Meanwhile, since the oil guide holes on each two second stator punching sheets 1221 are partially overlapped to achieve the communication effect, the oil cooling effect of the cooling oil on the stator winding 110 can be further enhanced by extending the cooling oil flow path.

It should be noted that, when the number of pole slots of the stator assembly is 6 pole 54 slots, the offset angle of each two second stator laminations 1221 can be 60 °.

In some embodiments, referring to fig. 8-10, fig. 8 is a schematic front view of a third core structure 123 in the stator assembly 100 shown in fig. 1, fig. 9 is a schematic overall structure of the stator assembly 100 shown in fig. 1 after the stator winding 110 and the fourth core structure 124 are hidden, and fig. 10 is a schematic enlarged structure of a portion D of the stator assembly 100 shown in fig. 9.

As shown in fig. 8 to 10, in an embodiment, the third core structure 123 may include at least one third stator punching piece 1231, and the oil guiding hole on each third stator punching piece 1231 is a T-shaped oil guiding hole 1232, where the T-shaped oil guiding holes 1232 may include a communication hole 1233 and a guiding part 1234 that are communicated with each other, and the communication hole 1233 is used to communicate with the second oil guiding hole 1222 located on the second stator punching piece 1221, so that cooling oil can flow through the communication hole 1233 to face the third core structure 123 after flowing through the second oil guiding hole 1222, thereby achieving a heat dissipation effect on the stator winding 110 located in the area of the third core structure 123.

Meanwhile, with continued reference to fig. 8 and 9, in the above embodiment, the second guide portion 1234 may be located inside the communication holes 1233 in the radial direction of the third stator punching plate 1231, so that the cooling oil after flowing through the plurality of communication holes 1233 can flow toward the stator winding 110 and finally flow toward the stator winding 110 and contact with the outer surface of the stator winding 110, so as to achieve a further heat dissipation effect on the stator winding 110.

It is understood that in the present embodiment, since the hole area of the T-shaped oil guide hole 1232 is larger than those of the first and second oil guide holes 1212 and 1222, when the cooling oil flows through the plurality of communication holes 1233, the cooling oil can flow in the circumferential direction of the T-shaped oil guide hole 1232 to lengthen the flow path of the cooling oil on the third core structure 123, thereby improving the heat dissipation effect to the stator winding 110.

In some embodiments, as shown in fig. 10, the plurality of T-shaped oil guiding holes 1232 are spaced on a side close to the outer circumference of the third core structure 123, and the plurality of oil guiding holes on the second stator core 1221 are spaced on a side close to the outer circumference of the second stator core 1221, where the aperture of each through hole 1233 along the direction of the spacing distribution is larger than the aperture of each oil guiding hole on the second stator core 1221 along the direction of the spacing distribution, so that the cooling oil in the second core structure 122 can flow more easily towards the third core structure 123, and the situation that the cooling oil loss causes the heat dissipation effect on the stator winding 110 to be reduced is avoided.

In some embodiments, referring to fig. 11-15, fig. 11 is a schematic front view of a fourth core structure 124 in the stator assembly 100 shown in fig. 1, fig. 12 is a schematic view of a structure of another view of the fourth core structure 124 in the stator assembly 100 shown in fig. 1, fig. 13 is an enlarged schematic view of a portion E of the stator assembly 100 shown in fig. 12, fig. 14 is a schematic overall structure of the stator assembly 100 shown in fig. 1 after the third core structure 123 and the fourth core structure 124 are assembled, and fig. 15 is an enlarged schematic view of a portion F of the stator assembly 100 shown in fig. 14.

As shown in fig. 11-15, the fourth core structure 124 may include a fourth stator punching 1241 and a fifth stator punching 1242, where the fifth stator punching 1242 is attached to one side of the fourth stator punching 1241 away from the T-shaped oil guiding hole 1232, the fourth stator punching 1241 and the fifth stator punching 1242 are each provided with a plurality of third oil guiding holes 1243 and a plurality of fourth oil guiding holes 1244, the plurality of third oil guiding holes 1243 and the plurality of fourth oil guiding holes 1244 are alternately arranged one by one, the third oil guiding holes 1243 are communicated with the T-shaped oil guiding holes 1232, and a distance between the third oil guiding holes 1243 and an end of the stator winding 110 is greater than a distance between the fourth oil guiding holes 1244 and an end of the stator winding 110 (i.e., the fourth oil guiding holes 1244 are disposed closer to an end of the stator winding 110). The fourth stator punching piece 1241 and the fifth stator punching piece 1242 are arranged in a staggered manner, so that the third oil guide hole 1243 located in the fourth stator punching piece 1241 and the fourth oil guide hole 1244 located in the fifth stator punching piece 1242 are communicated, and form a stepped channel with the T-shaped oil guide hole 1232, so that the cooling oil flowing out of the guide part 1234 can flow into the third oil guide hole 1243, gradually flow into the fourth oil guide hole 1244, and finally be sprayed towards the end part of the stator winding 110 at the fourth oil guide hole 1244, so as to form an inclined oil path sprayed towards the end part of the stator winding 110, thereby realizing the heat dissipation effect on the specific area of the stator winding 110.

It should be noted that, in the present embodiment, the fourth stator lamination 1241 may rotate with the fifth stator lamination 1242Degree (where n is the number of stages of the stator assembly) to create a misalignment effect, the fourth stator plate 1241 may be rotated 6.66 degrees with the fifth stator plate to create a misalignment effect when the number of pole slots of the stator assembly is 6 pole 54 slots.

In an embodiment, each of the first core structure 121, the second core structure 122, the third core structure 123, and the fourth core structure 124 may include a plurality of stator teeth 127 and a plurality of stator slots 128, and each two adjacent core structures are assembled one by the plurality of stator teeth 127 and the plurality of stator slots 128 to form a plurality of stator connection structures. Preferably, in this embodiment, there may be 54 stator teeth 127 and 54 stator slots 128.

Wherein, the number of oil guiding holes in the first core structure 121 and the number of oil guiding holes in the second core structure 122 are both greater than the number of stator connecting structures. Specifically, the number of oil guiding holes in the first core structure 121 and the number of oil guiding holes in the second core structure 122 may beAnd (s is the number of stator teeth 127 or stator slots 128, and a is a positive integer).

Meanwhile, the number of the T-shaped oil guide holes 1232 is smaller than the number of the stator connection structures. Specifically, the number of the T-shaped oil guide holes 1232 may beAnd s is the number of the stator teeth 127 or the stator slots 128, a is a positive integer), and preferably the number of the T-shaped oil guide holes 1232 is 27.

In addition, the number of oil guide holes in the fourth core structure 124 may be equal to the number of stator connection structures. Specifically, the number of the third oil guide holes 1243 and the number of the fourth oil guide holes 1244 may beAnd (s is the number of stator teeth 127 or stator slots 128, and a is a positive integer).

Embodiments of the present application also provide a motorized apparatus comprising a housing and a drive motor comprising a stator assembly 100 as described in any of the embodiments above. Wherein, be provided with the installation district in the casing, driving motor sets up in the installation district. It should be understood that the motor apparatus provided in this embodiment may be a motor vehicle such as a pick-up card or an automobile, or a motor vessel such as a ship or a yacht, that is, it is only required to include the above-mentioned stator assembly 100, which is included in the scope of the present application.

In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.

In the description of the present application, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more features.

The stator assembly and the motor apparatus provided by the embodiments of the present application are described in detail, and specific examples are applied herein to illustrate the principles and embodiments of the present application, and the description of the above examples is only for helping to understand the method and core idea of the present application; meanwhile, as those skilled in the art will vary in the specific embodiments and application scope according to the ideas of the present application, the present description should not be construed as limiting the present application in summary.

Claims (10)

1. A stator assembly, comprising:

a stator winding; and

at least one stator core set, the said stator core set is set up in the said stator winding; wherein each of the stator core groups includes:

at least two iron core structures, at least two iron core structures are assembled to form a stator iron core group, and each iron core structure is provided with an oil guide hole; in at least two iron core structures, the oil guide hole of each iron core structure is communicated with the oil guide hole of the other adjacent iron core structure.

2. The stator assembly according to claim 1, wherein at least two of the core structures include a first core structure, a second core structure, a third core structure, and a fourth core structure, the first core structure, the second core structure, the third core structure, and the fourth core structure are sequentially attached to each other along a direction from a center section of the stator winding to an end portion of the stator winding, and the plurality of oil guide holes are all located at one side near an outer circumference of the core structures.

3. The stator assembly of claim 2, wherein the second core structure includes a plurality of second stator laminations, each two of the second stator laminations being offset such that the oil guide holes on each two of the second stator laminations are partially overlapping.

4. A stator assembly according to claim 3, wherein the third core structure includes at least one third stator plate, each of the oil guide holes in the third stator plate being a T-shaped oil guide hole including a communication hole for communicating with the oil guide hole in the second stator plate and a guide portion located inside the communication hole in a radial direction of the third stator plate.

5. The stator assembly of claim 4, wherein the number of T-shaped oil guide holes and the number of oil guide holes on the second stator plate are plural, the plural T-shaped oil guide holes are spaced apart on a side close to an outer circumference of the third core structure, the plural oil guide holes on the second stator plate are spaced apart on a side close to the outer circumference of the second stator plate, and wherein a hole diameter of each communication hole in a direction along the spaced apart direction is larger than a hole diameter of each oil guide hole on the second stator plate in the direction along the spaced apart direction.

6. The stator assembly of claim 4, wherein the fourth core structure includes a fourth stator punching sheet and a fifth stator punching sheet, the fifth stator punching sheet is attached to a side of the fourth stator punching sheet away from the T-shaped oil guiding hole, the fourth stator punching sheet and the fifth stator punching sheet are each provided with a plurality of third oil guiding holes and a plurality of fourth oil guiding holes, the plurality of third oil guiding holes and the plurality of fourth oil guiding holes are alternately arranged one by one, the third oil guiding holes are communicated with the T-shaped oil guiding holes, and a distance between the third oil guiding holes and an end of the stator winding is greater than a distance between the fourth oil guiding holes and an end of the stator winding, wherein the fourth stator punching sheet and the fifth stator punching sheet are arranged in a staggered manner, so that the third oil guiding holes of the fourth stator punching sheet and the fourth oil guiding holes of the fifth stator punching sheet are communicated with the T-shaped oil guiding holes to form a stepped channel.

7. The stator assembly of claim 2, wherein the number of stator core groups is two, the first core structures of the two stator core groups are each provided with an oil inlet groove communicated with the oil guide holes of the two stator core groups, the two first core structures are arranged in a staggered manner so that the two oil inlet grooves form a Z-shaped oil inlet groove, and the second core structures, the third core structures and the fourth core structures of the two stator core groups are arranged in mirror images.

8. The stator assembly of claim 2, wherein the outer surface of the first core structure, the outer surface of the second core structure, the outer surface of the third core structure, and the outer surface of the fourth core structure are provided with weld grooves, and a plurality of the weld grooves are arranged in one-to-one communication.

9. The stator assembly of any one of claims 4-8, wherein each of the core structures includes a plurality of stator teeth and a plurality of stator slots, each two adjacent core structures are assembled one by the plurality of stator teeth and the plurality of stator slots to form a plurality of stator connection structures, and the number of oil guide holes of each core structure is a plurality, wherein the number of oil guide holes of the first core structure and the number of oil guide holes of the second core structure are both greater than the number of stator connection structures; the number of the T-shaped oil guide holes is smaller than that of the stator connecting structures; the number of oil guide holes in the fourth iron core structure is equal to the number of stator connecting structures.

10. A motorized apparatus, comprising:

the shell is internally provided with an installation area;

a drive motor comprising a stator assembly according to any one of claims 1-9, said drive motor being arranged in said mounting area.