CN116054441A - Driving motor stator oil cooling structure and oil cooling method thereof - Google Patents
Driving motor stator oil cooling structure and oil cooling method thereof Download PDFInfo
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- CN116054441A CN116054441A CN202310339167.XA CN202310339167A CN116054441A CN 116054441 A CN116054441 A CN 116054441A CN 202310339167 A CN202310339167 A CN 202310339167A CN 116054441 A CN116054441 A CN 116054441A
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- hole
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- 238000001816 cooling Methods 0.000 title claims abstract description 94
- 238000004804 winding Methods 0.000 claims abstract description 36
- 238000002347 injection Methods 0.000 claims abstract description 23
- 239000007924 injection Substances 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000005507 spraying Methods 0.000 claims description 35
- 238000007789 sealing Methods 0.000 claims description 13
- 239000007921 spray Substances 0.000 abstract description 25
- 230000000694 effects Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000001360 synchronised effect Effects 0.000 abstract description 3
- 239000000446 fuel Substances 0.000 description 4
- 238000004080 punching Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000003491 array Methods 0.000 description 2
- 239000000110 cooling liquid Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/24—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
- H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
- H02K9/193—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil with provision for replenishing the cooling medium; with means for preventing leakage of the cooling medium
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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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention relates to the technical field of cooling of driving motors, and provides a driving motor stator oil cooling structure and an oil cooling method thereof, wherein the structure comprises the following components: the stator core, the stator winding and the oil injection ring are respectively positioned in the shell; wherein, the stator winding is positioned at two sides of the stator core; the shell is provided with an oil inlet, a first annular groove and a first oil spray hole, and the oil inlet, the first annular groove and the first oil spray hole are communicated in sequence; the oil injection ring is provided with a second annular groove and a second oil injection hole, and the second annular groove and the second oil injection hole are communicated with each other; the stator core is provided with an axial through hole which is respectively communicated with the first annular groove and the second annular groove. The invention can realize deep cooling of the stator core, synchronous cooling of the stator core and the stator winding, has high overall cooling efficiency and simple process, can greatly reduce the production and application cost, and can ensure that the cooling effect of the stator core and the stator winding is more uniform during cooling.
Description
Technical Field
The invention relates to the technical field of driving motor cooling, in particular to a driving motor stator oil cooling structure and an oil cooling method thereof.
Background
In the high-speed rotation working process of the driving motor, the heat source is mainly concentrated on the motor stator, the motor rotor winding and the iron core, and if the driving motor works in a high-temperature environment for a long time, the working efficiency of the driving motor is seriously affected and the service life of the driving motor is reduced. The limit of the working efficiency of the driving motor is generally limited by the thermal limit capability, and the power density and the torque density of the driving motor can be improved under the same size by a stronger heat dissipation technology, so that the working performance and the service life of the driving motor are improved. The existing driving motors, especially in new energy automobiles, often do not pay attention to cooling of the motor stator.
In the existing driving motor stator cooling mode, when the stator core is cooled, cooling liquid flows through channels arranged on the outer annular surface of the stator core to finish cooling the stator core, and the cooling part of the cooling liquid mainly acts on the outer annular surface of the stator core and cannot deeply cool the stator core; in addition, the axial channel is arranged on the outer ring surface of the stator core, so that the processing complexity of a single core punching sheet can be greatly increased, and when a plurality of core punching sheets are spliced to form a coherent long channel, higher requirements are also put on the assembly precision of the plurality of core punching sheets. The existing driving motor stator cooling scheme has low overall cooling efficiency and complex technological process.
In view of this, overcoming the defects in the prior art is a problem to be solved in the art.
Disclosure of Invention
The invention preferably provides a solution to the technical problems of low cooling efficiency and complex process in the existing driving motor stator cooling scheme.
In order to solve the technical problems, the invention adopts the following technical scheme:
in a first aspect, the present invention provides a driving motor stator oil cooling structure, comprising:
the stator comprises a shell 1, a stator core 2, a stator winding 3 and an oil spraying ring 4, wherein the stator core 2, the stator winding 3 and the oil spraying ring 4 are respectively positioned in the shell 1; wherein the stator windings 3 are positioned at two sides of the stator core 2;
the shell 1 is provided with an oil inlet 11, a first annular groove 12 and a first oil spray hole 13, and the oil inlet 11, the first annular groove 12 and the first oil spray hole 13 are communicated in sequence; the oil spraying ring 4 is provided with a second annular groove 41 and a second oil spraying hole 42, and the second annular groove 41 and the second oil spraying hole 42 are communicated with each other; the stator core 2 is provided with an axial through hole 21, and the axial through hole 21 is respectively communicated with the first annular groove 12 and the second annular groove 41;
the cooling oil is divided into two paths after being injected from the oil inlet hole 11, one path flows along the circumferential direction of the first annular groove 12, and when flowing through the first oil nozzle 13, the stator winding 3 at one side of the stator core 2 is radially cooled through the first oil nozzle 13; the other path of the air flows along the axial through hole 21, axially cools the stator core 2, enters the second annular groove 41, flows along the circumferential direction of the second annular groove 41, and radially cools the stator winding 3 at the other side of the stator core 2 through the second oil spray hole 42 when flowing through the second oil spray hole 42.
Preferably, the first fuel injection holes 13, the second fuel injection holes 42, and the axial through holes 21 are respectively arranged in a circumferential array.
Preferably, the first oil jet 13 and the second oil jet 42 are the same in number.
Preferably, the first oil jet 13 and the second oil jet 42 are respectively at equal angles to the axial vertical plane of the housing 1.
Preferably, the axial through hole 21 has a rectangular, circular or sector-shaped cross section.
Preferably, the method further comprises:
a seal ring 5; the sealing ring 5 is respectively arranged in the third annular groove 14 of the shell 1 and the fourth annular groove 43 of the oil injection ring 4; wherein the notch directions of the third annular groove 14 and the fourth annular groove 43 are respectively directed toward the stator core 2.
Preferably, the housing 1 and the stator core 2 are interference fit.
In a second aspect, the present invention provides a method for cooling a stator of a drive motor, comprising:
s10, injecting cooling oil; injecting cooling oil into the stator of the driving motor through the oil inlet hole 11 of the shell 1;
s20, determining a flow path of cooling oil; the cooling oil injected from the oil inlet hole 11 of the shell 1 is divided into two paths, one path flows along the circumferential direction of the first annular groove 12 of the shell 1, and when flowing through the first oil nozzle 13 of the shell 1, the stator winding 3 on one side of the stator core 2 is radially cooled through the first oil nozzle 13; the other path of the air flows along the axial through hole 21 of the stator core 2, axially cools the stator core 2, enters the second annular groove 41 of the oil spraying ring 4, flows along the circumferential direction of the second annular groove 41, and radially cools the stator winding 3 at the other side of the stator core 2 through the second oil spraying hole 42 when flowing through the second oil spraying hole 42 of the oil spraying ring 4.
Preferably, the first fuel injection holes 13, the second fuel injection holes 42, and the axial through holes 21 are respectively arranged in a circumferential array.
Preferably, in S20, the determining a flow path of the cooling oil further includes:
a sealing ring 5 is arranged; the sealing ring 5 is respectively arranged in the third annular groove 14 of the shell 1 and the fourth annular groove 43 of the oil injection ring 4, and the sealing ring 5 prevents the cooling oil from seeping out of the stator of the driving motor.
Aiming at the defects in the prior art, the invention has the following beneficial effects:
according to the invention, the stator core is provided with the axial through hole, and the axial through hole is used as a through hole of cooling oil, so that the deep cooling of the stator core can be realized; meanwhile, the cooling oil is divided into two paths, so that the stator core and the stator windings on two sides of the stator core can be synchronously cooled, the overall cooling efficiency is high, and the technological process is simple.
Furthermore, the oil spraying holes are directly formed in the shell through ingenious shell structural design, and compared with the partial prior art scheme that the oil spraying rings with the oil spraying holes are respectively arranged on two sides of the stator iron core, the oil spraying ring can greatly reduce production and application cost.
Furthermore, the oil spray holes and the axial through holes are respectively arranged along the circumferential array, so that the stator core and the stator windings on two sides of the stator core can be cooled more uniformly in the synchronous cooling process of the stator core and the stator windings on two sides of the stator core.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings that are required to be used in the embodiments of the present invention will be briefly described below. It is evident that the drawings described below are only some embodiments of the present invention and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
Fig. 1 is a partial sectional view of a stator oil cooling structure of a driving motor provided in embodiment 1;
FIG. 2 is a partial three-dimensional view of a driving motor stator oil cooling structure provided in embodiment 1;
FIG. 3 is an overall three-dimensional cross-sectional view of a drive motor stator oil cooling structure provided in embodiment 1;
fig. 4 is a sectional view of a casing of a stator oil cooling structure of a driving motor provided in embodiment 1;
fig. 5 is a partial three-dimensional view of an oil spray ring of a stator oil cooling structure of a driving motor provided in embodiment 1;
fig. 6 is a partial front view of a driving motor stator oil cooling structure provided in embodiment 1.
In the drawings, like reference numerals are used to designate like parts or structures, wherein:
1-a shell, 11-an oil inlet hole, 12-a first annular groove, 13-a first oil injection hole and 14-a third annular groove; 2-stator core, 21-axial through hole; 3-stator windings; 4-oil spraying rings, 41-second annular grooves, 42-second oil spraying holes and 43-fourth annular grooves; and 5-sealing rings.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
In the description of the present invention, the terms "inner", "outer", "longitudinal", "transverse", "upper", "lower", "top", "bottom", etc. refer to an orientation or positional relationship based on that shown in the drawings, merely for convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Example 1:
in order to solve the technical problems of low cooling efficiency and complex process in the existing cooling scheme of the stator of the driving motor, embodiment 1 provides an oil cooling structure of the stator of the driving motor, as shown in fig. 1-3, which comprises: the stator comprises a shell 1, a stator core 2, a stator winding 3 and an oil spraying ring 4, wherein the stator core 2, the stator winding 3 and the oil spraying ring 4 are respectively positioned in the shell 1; wherein the stator windings 3 are located on both sides of the stator core 2.
The shell 1 and the stator core 2 are in interference fit, and the interference fit mode has the characteristics of simple structure, good centering, easy realization and the like, and other auxiliary fastening parts and materials are not required in the assembly process; in addition, the stator core 2 is of an integral structure, and is not required to be assembled in advance during interference fit.
The specific implementation is as follows: as shown in fig. 4, the casing 1 is provided with an oil inlet 11, a first annular groove 12 and a first oil injection hole 13, and the oil inlet 11, the first annular groove 12 and the first oil injection hole 13 are communicated in sequence; as shown in fig. 5, the oil spray ring 4 is provided with a second annular groove 41 and a second oil spray hole 42, and the second annular groove 41 and the second oil spray hole 42 are communicated with each other; as shown in fig. 6, the stator core 2 is provided with axial through holes 21, and the axial through holes 21 communicate with the first annular groove 12 and the second annular groove 41, respectively.
After the above paths are connected, as shown in fig. 1, the cooling mode is as follows: the cooling oil is divided into two paths after being injected from the oil inlet hole 11, one path flows along the circumferential direction of the first annular groove 12, and when flowing through the first oil nozzle 13, the stator winding 3 at one side of the stator core 2 is radially cooled through the first oil nozzle 13; the other path of the air flows along the axial through hole 21, axially cools the stator core 2, enters the second annular groove 41, flows along the circumferential direction of the second annular groove 41, and radially cools the stator winding 3 at the other side of the stator core 2 through the second oil spray hole 42 when flowing through the second oil spray hole 42.
In the present embodiment, by providing the axial through hole 21 on the stator core, the axial through hole 21 is used as a through hole for cooling oil, and deep cooling of the stator core 2 can be achieved; meanwhile, by dividing the cooling oil into two paths, the stator core 2 and the stator windings 3 at two sides of the stator core 2 can be synchronously cooled, the overall cooling efficiency is high, and the process is simple; in addition, through ingenious shell structure design, directly set up the nozzle opening on the casing, reducible nozzle ring's use quantity can reduce production application cost greatly.
In order to make the stator core and the stator windings on both sides of the stator core more uniform in cooling effect, the first oil spray holes 13, the second oil spray holes 42 and the axial through holes 21 are arranged in circumferential arrays, respectively.
In the practical application process, the number of the first oil spray holes 13 and the number of the second oil spray holes 42 are the same, preferably, the apertures of the first oil spray holes 13 and the second oil spray holes 42 are kept consistent, so that in order to enable the cooling oil to be sprayed to the proper positions of the stator windings, as an adjustable implementation manner, as shown in fig. 1 and fig. 4, the first oil spray holes 13 and the second oil spray holes 42 respectively have a predetermined included angle with the axial vertical plane of the casing 1, preferably, the included angle between the first oil spray holes 13 and the second oil spray holes 42 respectively is equal to the axial vertical plane of the casing 1.
In the practical application process, the cross section of the axial through hole 21 is rectangular, circular or fan-shaped, as shown in fig. 6, the cross section of the axial through hole 21 is shown in a rectangular manner, and further, in order to increase the contact area between the cooling oil and the stator core 2, and further improve the cooling capacity of the stator core 2, the cross section of the axial through hole 21 can also be circular or fan-shaped without affecting the rigidity of the axial through hole 21, wherein the fan-shaped is better, and the center of the fan-shaped is located on the central axis of the stator core 2.
Considering that there may be a small gap between the parts of the driving motor, the cooling oil may ooze out from the stator of the driving motor, which may adversely affect the cooling effect of the stator of the driving motor, and may pollute other parts of the driving motor, in order to prevent the cooling oil from oozing out from the stator of the driving motor, as one implementation manner, embodiment 1 provides an oil cooling structure of the stator of the driving motor, as shown in fig. 1-3, further including: a seal ring 5; the sealing ring 5 is respectively arranged in the third annular groove 14 of the shell 1 and the fourth annular groove 43 of the oil injection ring 4; wherein the notch directions of the third annular groove 14 and the fourth annular groove 43 are respectively directed toward the stator core 2.
Example 2:
based on the same general technical concept as embodiment 1, embodiment 2 provides a driving motor stator oil cooling method, using the driving motor stator oil cooling structure described in embodiment 1, including:
s10, injecting cooling oil; cooling oil is injected into the stator of the driving motor through the oil inlet hole 11 of the shell 1.
Wherein, casing 1 is equipped with inlet port 11, first ring channel 12 and first nozzle opening 13, and inlet port 11, first ring channel 12 and first nozzle opening 13 communicate in proper order, in the direction towards stator core 2, casing 1 still is equipped with third ring channel 14.
S20, determining a flow path of cooling oil; the cooling oil injected from the oil inlet hole 11 of the shell 1 is divided into two paths, one path flows along the circumferential direction of the first annular groove 12 of the shell 1, and when flowing through the first oil nozzle 13 of the shell 1, the stator winding 3 on one side of the stator core 2 is radially cooled through the first oil nozzle 13; the other path of the air flows along the axial through hole 21 of the stator core 2, axially cools the stator core 2, enters the second annular groove 41 of the oil spraying ring 4, flows along the circumferential direction of the second annular groove 41, and radially cools the stator winding 3 at the other side of the stator core 2 through the second oil spraying hole 42 when flowing through the second oil spraying hole 42 of the oil spraying ring 4.
The injection ring 4 is further provided with a fourth annular groove 43 in the direction of the stator core 2.
In order to make the stator core and the stator windings on both sides of the stator core more uniform in cooling effect, the first oil spray holes 13, the second oil spray holes 42 and the axial through holes 21 are arranged in circumferential arrays, respectively.
In order to prevent the cooling oil from oozing out of the driving motor stator, in S20, the determining a flow path of the cooling oil further includes: a sealing ring 5 is arranged; the sealing ring 5 is respectively arranged in the third annular groove 14 of the shell 1 and the fourth annular groove 43 of the oil injection ring 4, and the sealing ring 5 prevents the cooling oil from seeping out of the stator of the driving motor.
In summary, the invention provides the driving motor stator oil cooling structure and the driving motor stator oil cooling method, which can realize deep cooling of the stator core, synchronous cooling of the stator core and the stator winding, and has the advantages of high overall cooling efficiency, simple process, greatly reduced production and application costs, and more uniform cooling effect of the stator core and the stator winding during cooling.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (10)
1. A drive motor stator oil cooling structure, comprising:
the stator comprises a shell (1), a stator core (2), a stator winding (3) and an oil spraying ring (4), wherein the stator core (2), the stator winding (3) and the oil spraying ring (4) are respectively positioned in the shell (1); wherein, the stator winding (3) is positioned at two sides of the stator core (2);
the shell (1) is provided with an oil inlet hole (11), a first annular groove (12) and a first oil spraying hole (13), and the oil inlet hole (11), the first annular groove (12) and the first oil spraying hole (13) are communicated in sequence; the oil spraying ring (4) is provided with a second annular groove (41) and a second oil spraying hole (42), and the second annular groove (41) and the second oil spraying hole (42) are communicated with each other; the stator core (2) is provided with an axial through hole (21), and the axial through hole (21) is respectively communicated with the first annular groove (12) and the second annular groove (41);
the cooling oil is divided into two paths after being injected from the oil inlet hole (11), one path flows along the circumferential direction of the first annular groove (12), and when flowing through the first oil nozzle (13), the stator winding (3) at one side of the stator core (2) is radially cooled through the first oil nozzle (13); the other path of the air flows along the axial through hole (21), axially cools the stator core (2), enters the second annular groove (41), flows along the circumferential direction of the second annular groove (41), and radially cools the stator winding (3) at the other side of the stator core (2) through the second oil spraying hole (42) when flowing through the second oil spraying hole (42).
2. The drive motor stator oil cooling structure according to claim 1, wherein the first oil jet (13), the second oil jet (42) and the axial through hole (21) are respectively arranged in a circumferential array.
3. The drive motor stator oil cooling structure according to claim 2, wherein the first oil injection holes (13) and the second oil injection holes (42) are equal in number.
4. The driving motor stator oil cooling structure according to claim 2, wherein the first oil injection hole (13) and the second oil injection hole (42) are respectively equal in included angle with the axial vertical plane of the housing (1).
5. A drive motor stator oil cooling structure according to claim 2, characterized in that the axial through hole (21) has a rectangular, circular or sector cross section.
6. The drive motor stator oil cooling structure of claim 1, further comprising:
a seal ring (5); the sealing ring (5) is respectively arranged in a third annular groove (14) of the shell (1) and a fourth annular groove (43) of the oil spraying ring (4); wherein the notch directions of the third annular groove (14) and the fourth annular groove (43) face the stator core (2) respectively.
7. The drive motor stator oil cooling structure according to claim 1, characterized in that the housing (1) and the stator core (2) are interference fit.
8. A method of oil cooling a stator of a drive motor, comprising:
s10, injecting cooling oil; injecting cooling oil into a stator of the driving motor through an oil inlet hole (11) of the shell (1);
s20, determining a flow path of cooling oil; the method comprises the steps that cooling oil injected from an oil inlet hole (11) of a shell (1) is divided into two paths, one path flows along the circumferential direction of a first annular groove (12) of the shell (1), and when flowing through a first oil injection hole (13) of the shell (1), a stator winding (3) on one side of a stator core (2) is cooled radially through the first oil injection hole (13); the other path of the air flows along the axial through hole (21) of the stator core (2), axially cools the stator core (2), enters the second annular groove (41) of the oil spraying ring (4), flows along the circumferential direction of the second annular groove (41), and radially cools the stator winding (3) at the other side of the stator core (2) through the second oil spraying hole (42) when flowing through the second oil spraying hole (42) of the oil spraying ring (4).
9. The method of oil cooling of a drive motor stator according to claim 8, characterized in that the first oil jet (13), the second oil jet (42) and the axial through holes (21) are arranged in a circumferential array, respectively.
10. The driving motor stator oil cooling method according to claim 8, wherein in S20, the determining a flow path of cooling oil further includes:
a sealing ring (5) is arranged; the sealing ring (5) is respectively arranged in a third annular groove (14) of the shell (1) and a fourth annular groove (43) of the oil injection ring (4), and cooling oil is prevented from seeping out of the stator of the driving motor through the sealing ring (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310339167.XA CN116054441A (en) | 2023-04-01 | 2023-04-01 | Driving motor stator oil cooling structure and oil cooling method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310339167.XA CN116054441A (en) | 2023-04-01 | 2023-04-01 | Driving motor stator oil cooling structure and oil cooling method thereof |
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| CN116054441A true CN116054441A (en) | 2023-05-02 |
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| CN202310339167.XA Pending CN116054441A (en) | 2023-04-01 | 2023-04-01 | Driving motor stator oil cooling structure and oil cooling method thereof |
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Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207939353U (en) * | 2018-03-30 | 2018-10-02 | 长城汽车股份有限公司 | A kind of motor and vehicle |
| CN212649253U (en) * | 2020-06-29 | 2021-03-02 | 威睿电动汽车技术(宁波)有限公司 | Motor oil cooling device, motor assembly and vehicle |
| CN112448524A (en) * | 2019-08-31 | 2021-03-05 | 比亚迪股份有限公司 | Motor and vehicle |
| CN113612351A (en) * | 2021-06-29 | 2021-11-05 | 臻驱科技（上海）有限公司 | Cooling structure and method of driving motor, oil-cooled motor and automobile |
| CN113644784A (en) * | 2020-05-11 | 2021-11-12 | 上海汽车集团股份有限公司 | Oil cooling driving motor and automobile |
| CN113708525A (en) * | 2021-08-26 | 2021-11-26 | 广东美芝制冷设备有限公司 | Motor and vehicle |
| CN113708524A (en) * | 2021-07-29 | 2021-11-26 | 博格华纳汽车零部件（武汉）有限公司 | Motor stator cooling system |
| CN114268178A (en) * | 2021-12-23 | 2022-04-01 | 苏州汇川控制技术有限公司 | Stator core and oil-cooled motor |
| CN114301200A (en) * | 2021-11-16 | 2022-04-08 | 云度新能源汽车有限公司 | Oil-cooled motor stator core and oil-cooled motor |
| CN216751437U (en) * | 2021-12-02 | 2022-06-14 | 长沙湘电电气技术有限公司 | Oil-cooled motor cooling system |
| CN114915056A (en) * | 2022-05-19 | 2022-08-16 | 中国第一汽车股份有限公司 | Cooling structure of stator and automotive permanent magnet synchronous motor |
| CN217642899U (en) * | 2022-04-22 | 2022-10-21 | 浙江吉利控股集团有限公司 | Stator assembly, motor and vehicle |
| CN217984747U (en) * | 2022-08-05 | 2022-12-06 | 小米汽车科技有限公司 | Cooling oil ring, motor and vehicle |
| CN115580071A (en) * | 2022-10-31 | 2023-01-06 | 安徽江淮汽车集团股份有限公司 | Cooling structure and cooling method for oil-cooled motor stator and winding |
| CN218783636U (en) * | 2022-10-27 | 2023-03-31 | 联合汽车电子有限公司 | Driving motor stator core cooling structure and driving motor |
-
2023
- 2023-04-01 CN CN202310339167.XA patent/CN116054441A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207939353U (en) * | 2018-03-30 | 2018-10-02 | 长城汽车股份有限公司 | A kind of motor and vehicle |
| CN112448524A (en) * | 2019-08-31 | 2021-03-05 | 比亚迪股份有限公司 | Motor and vehicle |
| CN113644784A (en) * | 2020-05-11 | 2021-11-12 | 上海汽车集团股份有限公司 | Oil cooling driving motor and automobile |
| CN212649253U (en) * | 2020-06-29 | 2021-03-02 | 威睿电动汽车技术(宁波)有限公司 | Motor oil cooling device, motor assembly and vehicle |
| CN113612351A (en) * | 2021-06-29 | 2021-11-05 | 臻驱科技（上海）有限公司 | Cooling structure and method of driving motor, oil-cooled motor and automobile |
| CN113708524A (en) * | 2021-07-29 | 2021-11-26 | 博格华纳汽车零部件（武汉）有限公司 | Motor stator cooling system |
| CN216356140U (en) * | 2021-07-29 | 2022-04-19 | 博格华纳汽车零部件（武汉）有限公司 | Motor stator cooling system |
| CN113708525A (en) * | 2021-08-26 | 2021-11-26 | 广东美芝制冷设备有限公司 | Motor and vehicle |
| CN114301200A (en) * | 2021-11-16 | 2022-04-08 | 云度新能源汽车有限公司 | Oil-cooled motor stator core and oil-cooled motor |
| CN216751437U (en) * | 2021-12-02 | 2022-06-14 | 长沙湘电电气技术有限公司 | Oil-cooled motor cooling system |
| CN114268178A (en) * | 2021-12-23 | 2022-04-01 | 苏州汇川控制技术有限公司 | Stator core and oil-cooled motor |
| CN217642899U (en) * | 2022-04-22 | 2022-10-21 | 浙江吉利控股集团有限公司 | Stator assembly, motor and vehicle |
| CN114915056A (en) * | 2022-05-19 | 2022-08-16 | 中国第一汽车股份有限公司 | Cooling structure of stator and automotive permanent magnet synchronous motor |
| CN217984747U (en) * | 2022-08-05 | 2022-12-06 | 小米汽车科技有限公司 | Cooling oil ring, motor and vehicle |
| CN218783636U (en) * | 2022-10-27 | 2023-03-31 | 联合汽车电子有限公司 | Driving motor stator core cooling structure and driving motor |
| CN115580071A (en) * | 2022-10-31 | 2023-01-06 | 安徽江淮汽车集团股份有限公司 | Cooling structure and cooling method for oil-cooled motor stator and winding |
Non-Patent Citations (1)
| Title |
|---|
| 刘马林: "直接喷油式永磁同步电机温度场研究", 硕士学位论文, no. 2017, pages 19 - 20 * |
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Application publication date: 20230502 |