CN216599153U - Stator and motor with same - Google Patents
Stator and motor with same Download PDFInfo
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- CN216599153U CN216599153U CN202123125412.2U CN202123125412U CN216599153U CN 216599153 U CN216599153 U CN 216599153U CN 202123125412 U CN202123125412 U CN 202123125412U CN 216599153 U CN216599153 U CN 216599153U
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- stator
- end cover
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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Abstract
The utility model provides a stator and a motor with the same, wherein the stator comprises a stator core, a stator winding, a stator outer end cover and a cooling system, the stator winding is inserted into a stator groove formed in the inner wall of the stator core, the stator core is connected with the stator outer end cover, the cooling system is provided with a cooling flow channel for communicating the stator outer end cover with the stator groove, and cooling liquid can cool the part of the stator winding in the stator core through the cooling flow channel. The utility model also provides a motor which comprises the stator. Above-mentioned stator is owing to including cooling system for the inside and outside whole stator winding of stator core is directly cooled off to the stator, and the high-efficient temperature rise that reduces the motor realizes promoting the output performance of motor under the unchangeable circumstances of motor size.
Description
Technical Field
The utility model relates to the technical field of automobiles, in particular to a stator and a motor with the same.
Background
The motor can generate heat after operating for a period of time, and the motor can continuously generate heat after operating for a long time, so that the temperature of the motor winding is greatly increased, and the motor winding insulation can be inevitably damaged, the aging is aggravated and the service life is greatly shortened by using for a long time. To avoid this, the motor needs to be cooled so that it is within a safe operating temperature range. The current major motor cooling methods have limited cooling capacity.
SUMMERY OF THE UTILITY MODEL
In view of the above, there is a need to provide a stator with a reasonable design, which can cool the windings of the motor completely and efficiently to overcome the deficiencies of the prior art.
The utility model provides a stator which comprises a stator core, a stator winding, a stator outer end cover and a cooling system, wherein the stator winding is inserted into a stator groove formed in the inner wall of the stator core, the stator core is connected with the stator outer end cover, and the cooling system is provided with a cooling flow channel for communicating the stator outer end cover with the stator groove, so that cooling liquid can cool the part, located in the stator core, of the stator winding through the cooling flow channel.
Furthermore, the two side walls of the stator slot are symmetrically provided with raised lines, the raised lines divide the stator slot into an inner slot and an outer slot, and the raised lines can prevent the stator winding from entering the inner slot and being limited in the outer slot.
Furthermore, the inner groove, the protruding strip and the stator winding limited in the outer groove by the protruding strip form a stator core flow passage, an outer end cover oil inlet is formed in the outer side of the outer end cover of the stator, an outer end cover inner oil port is formed in the inner side of the outer end cover of the stator, the outer end cover oil inlet and the outer end cover inner oil port are communicated through an outer end cover oil duct inside the outer end cover of the stator, and the outer end cover inner oil port is communicated with the stator core flow passage.
Further, the stator winding comprises an inner winding located in the stator core and an outer winding located outside the stator core, an outer end cover outer oil port is further arranged on the outer side of the outer end cover of the stator, the outer end cover outer oil port is communicated with the outer end cover oil duct, and cooling liquid in the outer end cover oil duct can flow to the outer winding through the outer end cover outer oil port.
The stator further comprises a stator inner end cover, the stator inner end cover is arranged between the stator core and the stator outer end cover, an inner end cover oil hole is formed in the stator inner end cover, and the inner end cover oil hole is communicated with the stator core flow passage and the outer end cover oil hole.
Furthermore, one side, far away from the stator core, of the inner end cover of the stator is provided with an annular boss, one side, close to the stator core, of the outer end cover of the stator is provided with a second annular boss, the annular boss and the second annular boss are separated by a certain gap to form a channel, and the channel is communicated with the oil hole in the inner end cover and the oil hole in the outer end cover.
Further, the stator also comprises a stator inner end cover, and the cooling liquid flows through the stator outer end cover, the stator inner end cover and the stator slots, so that the part of the stator winding located in the stator iron core is cooled.
Further, the outer end cover of the stator is provided with an outer end cover oil inlet, an outer end cover oil passage and an outer end cover inner oil port, the inner end cover is provided with an inner end cover oil hole, and the cooling liquid enters from the outer end cover oil inlet and flows to the stator slot after flowing through the outer end cover oil passage, the outer end cover inner oil port and the inner end cover oil hole.
Furthermore, one side, far away from the stator core, of the inner end cover of the stator is provided with an annular boss, one side, close to the stator core, of the outer end cover of the stator is provided with a second annular boss, a certain gap is formed between the annular boss and the second annular boss to form a channel, the channel is communicated with the oil hole in the inner end cover and the oil hole in the outer end cover, and the cooling liquid flows out of the oil hole in the outer end cover and then flows to the channel, and flows into the oil hole in the inner end cover from the channel.
Further, the stator winding comprises an inner winding located in the stator core and an outer winding located outside the stator core, an outer end cover outer oil port is further arranged on the outer side of the outer end cover of the stator, the outer end cover outer oil port is communicated with the outer end cover oil duct, and cooling liquid in the outer end cover oil duct can flow to the outer winding through the outer end cover outer oil port.
The utility model also provides a motor which comprises the stator.
The technical scheme of the utility model has the following beneficial effects: above-mentioned stator owing to including cooling system for the whole stator winding in the stator direct cooling stator iron core, the high-efficient temperature rise that reduces the motor, thereby realize promoting the output performance of motor under the unchangeable circumstances of motor size.
Drawings
Fig. 1 is a schematic structural view of a stator of the present invention.
Fig. 2 is an exploded view of the stator of the present invention.
Fig. 3 is an enlarged sectional view of fig. 1.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of a stator of the present invention, fig. 2 is an exploded view of the stator of the present invention, and fig. 3 is an enlarged sectional view of fig. 1. Referring to fig. 1 to 3, a stator 10 of the present invention includes a stator core 12, a stator winding 13, a stator inner end cover 14, a stator outer end cover 16, and a cooling system 17.
The stator core 12 has a tubular structure with a certain thickness, a cavity is formed inside the stator core 12, and the stator core 12 can be processed by using a magnetic material, such as a silicon steel sheet, an amorphous alloy, and other soft magnetic materials. A plurality of stator slots 121 are uniformly formed in the inner wall of the stator core 12, the stator slots 121 are slots, the stator slots 121 are axially parallel to the center of the stator core 12, and the stator slots 121 penetrate through the inner wall of the stator core 12. The stator slots 121 are provided with protruding strips 124, the protruding strips 124 are symmetrically arranged on two side walls of the stator slots 121, the protruding strips 124 can divide the stator slots 121 into inner slots 123 and outer slots 122, the outer slots 122 are close to the notches of the stator slots 121, the inner slots 123 are far away from the notches of the stator slots 121, the outer slots 122 are used for inserting and accommodating the stator windings 13, the protruding strips 124 limit the stator windings 13 in the outer slots 122 to prevent the stator windings from entering the inner slots 123, and the inner slots 123 are flow channels for cooling media.
The stator winding 13 is disposed in the stator core 12, the stator winding 13 is inserted into the stator slot 121, and the stator winding 13 is in an annular structure as a whole. The length of the stator winding 13 is greater than that of the stator core 12, the part of the stator winding 13 located inside the stator core 12 (the stator slot 121) is an inner winding 131, the part of the stator winding 13 located outside the stator core 12 (the stator slot 121) is an outer winding, outer windings are arranged outside two ends of the stator core 12, wherein the outer winding outside one end is a first outer winding 132, the first outer winding 132 is in an annular boss structure, the first outer winding 132 protrudes out of the outer periphery of the inner winding 131 and can be limited outside the stator core 12 (the stator slot 121), the outer winding outside the other end is a second outer winding 133, the second outer winding 133 is in a torsional winding structure, the second outer winding 133 is twisted through a twisting device, the twisted second outer winding 133 cannot move along the stator slot 121, the second outer winding 133 is limited outside the stator core 12 (the stator slot 121), and the two outer windings (the first outer winding 132 and the second outer winding 133) are limited outside the stator core 12 (the stator slot 121) so as to realize the winding around the stator slot 121 Fixation between the group 13 and the stator core 12. Need carry out insulation treatment between stator winding 13 and stator core 12 (stator slot 121), in this embodiment, at the outer cladding insulating layer of stator winding 13, the insulating layer adopts the material that the heat conductivity is good, and stator winding 13 can promote heat transmission efficiency through the insulating layer, promotes stator winding 13 and coolant liquid heat exchange effect, and then stator winding 13's cooling effect.
The inner end cover 14 of the stator is of an annular structure, the inner end cover 14 of the stator is matched with the end face of the stator core 12, namely the outer diameter of the inner end cover 14 of the stator is equal to the outer diameter of the end face of the stator core 12, and the inner diameter of the inner end cover 14 of the stator is larger than the inner diameter of the end face of the stator core 12. The stator inner end cover 14 is sleeved outside the second outer winding 133 of the stator winding 13, and the stator inner end cover 14 is in contact with the end face of the stator core 12. An annular boss 142 is arranged on one side (outer side) of the stator inner end cover 14 far away from the stator core 12, the annular boss 142 is coaxially and fixedly connected with the stator inner end cover 14, the annular boss 142 protrudes out of the surface of the stator inner end cover 14, the inner diameter of the annular boss 142 is equal to the inner diameter of the stator inner end cover 14, and the outer diameter of the annular boss 142 is smaller than the outer diameter of the stator inner end cover 14.
The outer end cover 16 of the stator is of an annular structure, the outer end cover 16 of the stator is matched with the inner end cover 14 of the stator, the inner diameter of the outer end cover 16 of the stator is equal to that of the inner end cover 14 of the stator, and the outer diameter of the outer end cover 16 of the stator is equal to that of the inner end cover 14 of the stator. A second annular boss 162 is arranged on one side (inner side) of the outer stator end cover 16 close to the stator core 12, the second annular boss 162 is coaxially and fixedly connected with the outer stator end cover 16, the second annular boss 162 protrudes out of the surface (inner side) of the outer stator end cover 16, the outer diameter of the second annular boss 162 is equal to the outer diameter of the outer stator end cover 16, the inner diameter of the second annular boss 162 is larger than the inner diameter of the outer stator end cover 16, the inner diameter of the second annular boss 162 is larger than the outer diameter of the annular boss 142, and the second annular boss 162 is equal to the annular boss 142 in height.
The stator inner end cover 14 and the stator outer end cover 16 are sequentially sleeved on the second outer winding 133 of the stator winding 13, the stator inner end cover 14 is clamped between the stator core 12 and the stator outer end cover 16, and the stator core 12, the stator inner end cover 14 and the stator outer end cover 16 are detachably and fixedly connected. One side of the stator inner end cover 14 without the annular boss 142 is in contact with the end surface of the stator core 12, one side (outer side) of the stator inner end cover 14 with the annular boss 142 is in surface contact with one side (inner side) of the stator outer end cover 16 provided with the second annular boss 162, specifically, the annular boss 142 is in surface contact with the part of the stator outer end cover 16 without the second annular boss 162, the second annular boss 162 is in contact with the part of the stator inner end cover 14 without the annular boss 142, and the annular boss 142 and the second annular boss 162 form a channel 176 with a certain gap.
The stator core 12, the inner stator end cap 14, and the outer stator end cap 16 are detachably and fixedly connected, and the detachable and fixed connection may be a bolt connection, a snap connection, or the like, in this embodiment, the detachable and fixed connection is a bolt connection, specifically, hole type connection portions are respectively disposed at corresponding positions on the outer peripheries of the stator core 12, the inner stator end cap 14, and the outer stator end cap 16, and the hole type connection portions are fastened and fixed integrally by bolts, but is not limited thereto. Sealing gaskets (not shown) can be arranged among the stator core 12, the stator inner end cover 14 and the stator outer end cover 16 (at the contact position), so that the pressure resistance and the sealing property are ensured, and the connectivity of the cooling system 18 is not influenced.
The outer end cover oil inlet 172 is disposed outside the outer end cover 16 of the stator, the outer end cover oil inlet 172 is a pipe structure that can be conveniently used externally, in this embodiment, the outer end cover oil inlets 172 are two and symmetrically disposed, and in other embodiments, a corresponding number of outer end cover oil inlets 172 may be disposed according to specific needs. An annular outer end cover oil passage 175 is formed in the stator outer end cover 16, and an outer end cover oil inlet 172 is communicated with the outer end cover oil passage 175. The outer side of the outer end cover 16 of the stator is provided with outer end cover oil ports 173 at uniform intervals, and the outer end cover oil ports 173 are communicated with the outer end cover oil passage 175. The inner annular surface of the second annular boss 162 is provided with outer end cover inner oil ports 174 at regular intervals, the outer end cover inner oil ports 174 are communicated with the outer end cover oil passage 175, in this embodiment, the positions and the number of the outer end cover inner oil ports 174 correspond to the positions and the number of the outer end cover outer oil ports 173, in other embodiments, the positions of the outer end cover inner oil ports 174 and the outer end cover outer oil ports 173 may be staggered, but the utility model is not limited thereto. The annular boss 142 is spaced from the second annular boss 162 to form an annular passage 176, and the passage 176 is in communication with the outer end cap internal oil port 174. Inner end cover oil holes 177 are uniformly spaced on the portion of the stator inner end cover 14 forming the channel 176, that is, a plurality of inner end cover oil holes 177 are uniformly distributed on the stator inner end cover 14 with a radius between the outer diameter of the annular boss 142 and the inner diameter of the second annular boss 162. The positions and the number of the inner end cover oil holes 177 correspond to the positions and the number of the stator core flow passages 178, and the inner end cover oil holes 177 are communicated with the stator core flow passages 178. Stator core flow passages 178 are formed between the inner slots 123, the convex strips 124, and the stator windings 13 (inner windings 131) retained in the outer slots 122 by the convex strips 124. The cooling system 17 uses a cooling liquid having good fluidity, such as engine oil, water, etc., and the cooling medium is usually selected from liquids having a large specific heat capacity, good thermal conductivity, a low melting point, and a high boiling point.
The communicated outer end cap oil inlet 172, outer end cap oil outlet 173, outer end cap oil inlet 174, outer end cap oil gallery 175, passage 176, inner end cap oil hole 177, and stator core flow passage 178 form a cooling flow passage that runs through the stator core 12, the stator inner end cap 14, and the stator outer end cap 16.
The working principle of the cooling system 17 is as follows: the cooling liquid enters the outer end cover oil passage 175 through the outer end cover oil inlet 172, a part of the cooling liquid in the outer end cover oil passage 175 is uniformly sprayed onto the second outer winding 133 through the outer end cover oil outlet 173 and cools the second outer winding, the other part of the cooling liquid in the outer end cover oil passage 175 flows into the passage 176 through the outer end cover oil inlet 174 and then flows into the stator core flow passage 178 through the inner end cover oil hole 177, the inner winding 131 is directly cooled and cooled in the process that the cooling liquid flows in the stator core flow passage 178, and finally the cooling liquid flows out from the other end of the stator core flow passage 178 and is uniformly sprayed onto the first outer winding 132 to cool the first outer winding. The cooling system 17 penetrates the stator core 12, the stator inner end cover 14, and the stator outer end cover 16. The cooling system 17 directly contacts the second outer winding 133, the inner winding 131, and the first outer winding 132 with the cooling liquid to cool down the entire stator winding 13 (heat generating source). The cooling system 17 directly cools the whole stator winding 13 inside and outside the stator core 12, and the temperature rise of the motor is efficiently reduced, so that the output performance of the motor is improved under the condition that the size of the motor is not changed.
The utility model also includes providing an electric machine comprising a stator 10.
The technical scheme of the utility model has the following beneficial effects: above-mentioned stator 10 is owing to including cooling system 17 for inside and outside whole stator winding 13 of stator core 12 is cooled off in stator 10 direct cooling, and the high-efficient temperature rise that reduces the motor realizes promoting the output performance of motor under the unchangeable circumstances of motor size keeping.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (11)
1. A stator (10), characterized by: the stator (10) comprises a stator core (12), a stator winding (13), a stator outer end cover (16) and a cooling system (17), wherein the stator winding (13) is inserted into a stator groove (121) formed in the inner wall of the stator core (12), the stator core (12) is connected with the stator outer end cover (16), and the cooling system (17) is provided with a cooling flow channel for communicating the stator outer end cover (16) with the stator groove (121), so that cooling liquid can cool the part, located in the stator core (12), of the stator winding (13) through the cooling flow channel.
2. The stator (10) of claim 1, wherein: the stator winding is characterized in that protruding strips (124) are symmetrically arranged on two side walls of the stator slot (121), the protruding strips (124) divide the stator slot (121) into an inner slot (123) and an outer slot (122), and the protruding strips (124) can prevent the stator winding (13) from entering the inner slot (123) and being limited in the outer slot (122).
3. The stator (10) of claim 2, wherein: the inner groove (123), the convex strip (124) and the stator winding (13) limited in the outer groove (122) by the convex strip (124) form a stator core flow passage (178), an outer end cover oil inlet (172) is arranged on the outer side of the outer end cover (16) of the stator, an outer end cover inner oil port (174) is arranged on the inner side of the outer end cover (16) of the stator, the outer end cover oil inlet (172) and the outer end cover inner oil port (174) are communicated through an outer end cover oil passage (175) inside the outer end cover (16) of the stator, and the outer end cover inner oil port (174) is communicated with the stator core flow passage (178).
4. A stator (10) according to claim 3, wherein: the stator winding (13) comprises an inner winding (131) located in the stator iron core (12) and an outer winding located outside the stator iron core (12), an outer end cover outer oil port (173) is further arranged on the outer side of the outer end cover (16) of the stator, the outer end cover outer oil port (173) is communicated with the outer end cover oil duct (175), and cooling liquid in the outer end cover oil duct (175) can flow to the outer winding through the outer end cover outer oil port (173).
5. The stator (10) of claim 4, wherein: the stator (10) further comprises a stator inner end cover (14), the stator inner end cover (14) is arranged between the stator iron core (12) and the stator outer end cover (16), an inner end cover oil hole (177) is formed in the stator inner end cover (14), and the inner end cover oil hole (177) is communicated with the stator iron core flow passage (178) and the outer end cover oil hole (174).
6. The stator (10) of claim 5, wherein: the stator structure is characterized in that an annular boss (142) is arranged on one side, away from the stator core (12), of the inner end cover (14) of the stator, a second annular boss (162) is arranged on one side, close to the stator core (12), of the outer end cover (16) of the stator, a channel (176) is formed between the annular boss (142) and the second annular boss (162) at a certain interval, and the channel (176) is communicated with the oil hole (177) of the inner end cover and the oil hole (174) in the outer end cover.
7. The stator (10) of claim 1, wherein: the stator (10) further comprises a stator inner end cover (14), and the cooling liquid flows through the stator outer end cover (16), the stator inner end cover (14) and the stator slots (121) so as to cool the part of the stator winding (13) located in the stator iron core (12).
8. The stator (10) of claim 7, wherein: the stator outer end cover (16) is provided with an outer end cover oil inlet (172), an outer end cover oil passage (175) and an outer end cover inner oil port (174), the inner end cover is provided with an inner end cover oil hole (177), and the cooling liquid enters from the outer end cover oil inlet (172) and flows to the stator slot (121) after flowing through the outer end cover oil passage (175), the outer end cover inner oil port (174) and the inner end cover oil hole (177).
9. The stator (10) of claim 8, wherein: one side of the inner end cover (14) of the stator, which is far away from the stator core (12), is provided with an annular boss (142), one side of the outer end cover (16) of the stator, which is close to the stator core (12), is provided with a second annular boss (162), the annular boss (142) and the second annular boss (162) are separated by a certain gap to form a channel (176), the channel (176) is communicated with the oil hole (177) of the inner end cover and the oil hole (174) in the outer end cover, and cooling liquid flows out of the oil hole (174) in the outer end cover and then flows to the channel (176), so that the channel (176) flows into the oil hole (177) of the inner end cover.
10. The stator (10) of claim 8, wherein: the stator winding (13) comprises an inner winding (131) located in the stator iron core (12) and an outer winding located outside the stator iron core (12), an outer end cover outer oil port (173) is further arranged on the outer side of the outer end cover (16) of the stator, the outer end cover outer oil port (173) is communicated with the outer end cover oil duct (175), and cooling liquid in the outer end cover oil duct (175) can flow to the outer winding through the outer end cover outer oil port (173).
11. An electric machine characterized by: the electrical machine comprises a stator (10) according to any of claims 1-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123125412.2U CN216599153U (en) | 2021-12-10 | 2021-12-10 | Stator and motor with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123125412.2U CN216599153U (en) | 2021-12-10 | 2021-12-10 | Stator and motor with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216599153U true CN216599153U (en) | 2022-05-24 |
Family
ID=81612808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123125412.2U Active CN216599153U (en) | 2021-12-10 | 2021-12-10 | Stator and motor with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216599153U (en) |
-
2021
- 2021-12-10 CN CN202123125412.2U patent/CN216599153U/en active Active
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