CN114567101A - Oil-cooled motor rotor - Google Patents
Oil-cooled motor rotor Download PDFInfo
- Publication number
- CN114567101A CN114567101A CN202210207033.8A CN202210207033A CN114567101A CN 114567101 A CN114567101 A CN 114567101A CN 202210207033 A CN202210207033 A CN 202210207033A CN 114567101 A CN114567101 A CN 114567101A
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- Prior art keywords
- oil
- rotor
- iron core
- groove
- integrated
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- 238000004080 punching Methods 0.000 claims abstract description 69
- 238000002347 injection Methods 0.000 claims abstract description 60
- 239000007924 injection Substances 0.000 claims abstract description 60
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 51
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 30
- 239000010959 steel Substances 0.000 claims abstract description 30
- 238000001816 cooling Methods 0.000 claims abstract description 27
- 230000000712 assembly Effects 0.000 claims abstract description 21
- 238000000429 assembly Methods 0.000 claims abstract description 21
- 238000010030 laminating Methods 0.000 claims abstract description 8
- 239000008358 core component Substances 0.000 claims abstract description 7
- 238000003475 lamination Methods 0.000 claims abstract description 6
- 238000000926 separation method Methods 0.000 claims description 16
- 238000004804 winding Methods 0.000 abstract description 13
- 125000006850 spacer group Chemical group 0.000 abstract 1
- 239000007921 spray Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Images
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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
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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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
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- 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
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention provides an oil-cooled motor rotor which can well solve the problems of cooling of a central iron core of a rotor and magnetic steel and cooling of a winding at the central part of a stator iron core. The rotor comprises a rotor iron core assembly, a rotor integrated oil circuit iron core assembly and an oil-cooled motor shaft; the rotor iron core assemblies and the rotor integrated oil circuit iron core assemblies are sequentially sleeved and fixedly arranged in the axial area of the oil-cooled motor shaft through spacers, the rotor integrated oil circuit iron core assemblies are arranged between the adjacent rotor iron core assemblies, and the rotor iron core assemblies are arranged between the adjacent rotor integrated oil circuit iron core assemblies; rotor core components are respectively arranged at the axial two ends of the oil cooling motor shaft; each group of rotor core components is formed by laminating a plurality of rotor punching sheets and is provided with magnetic steel; each group of rotor integrated oil circuit core assembly comprises an oil circuit lamination assembly, an oil inlet is arranged on the ring of the inner diameter of the oil circuit lamination assembly, a plurality of oil injection ports are arranged on the ring of the outer diameter of the oil circuit lamination assembly, and the oil inlet is arranged corresponding to the oil injection ports respectively.
Description
Technical Field
The invention relates to the technical field of motor rotor structures, in particular to an oil-cooled motor rotor.
Background
Along with the promotion of new energy automobile PMSM power density requirement, traditional water-cooling mode can't satisfy the cooling requirement because of the heat-conduction path is long, and oil-cooled motor promotes the heat transfer effect greatly because of the adoption be the heat transfer mode of cooling oil with the motor part direct contact that generates heat for motor power density promotes by a wide margin. The heating source of the permanent magnet motor during working is mainly concentrated in the motor stator core, the stator winding, the motor rotor core, the magnetic steel and other parts, and the heating of the stator core and the stator winding is the largest under the common condition. The highest point of the temperature of the traditional water-cooled motor is located at the end part of the winding, and the traditional oil-cooled motor cools the winding at the end part of the stator by adopting a stator spraying mode, so that the highest point of the temperature of the motor is located at the central parts of the stator core and the rotor core, the high-load continuous power of the oil-cooled motor is severely limited by local high temperature, and the magnetic steel is overheated and demagnetized under severe conditions, thereby affecting the performance, reliability and service life of the motor.
Most of the existing oil-cooled motors spray the end windings of the motor stator, and cannot cool the iron core and the windings in the motor rotor and the center of the stator iron core.
In order to solve the technical problems in the prior art, the invention aims to provide an oil-cooled motor rotor, wherein an oil circuit is integrated in a motor rotor core assembly, so that the interior of a rotor core, magnetic steel and a stator core central winding are cooled.
Disclosure of Invention
Aiming at the problems, the invention provides an oil-cooled motor rotor which can well solve the problems of cooling of a rotor center iron core and magnetic steel and cooling of a stator core center part winding.
An oil-cooled electric machine rotor, characterized in that it comprises:
a rotor core assembly;
the rotor is integrated with an oil way core assembly;
and an oil-cooled motor shaft;
the rotor iron core assemblies and the rotor integrated oil circuit iron core assemblies are sequentially sleeved in an axial area of the oil-cooled motor shaft in a spacing mode, the rotor integrated oil circuit iron core assemblies are arranged between the adjacent rotor iron core assemblies, and the rotor iron core assemblies are arranged between the adjacent rotor integrated oil circuit iron core assemblies;
the rotor core components are respectively arranged at the two axial ends of the oil cooling motor shaft;
each group of the rotor core components is formed by laminating a plurality of rotor punching sheets and is provided with magnetic steel;
each group of the rotor integrated oil circuit core assembly comprises an oil circuit laminated assembly, an oil inlet is arranged on the inner diameter of the oil circuit laminated assembly, a plurality of oil injection ports are arranged on the outer diameter of the oil circuit laminated assembly, the oil inlets are respectively arranged corresponding to the oil injection ports, an oil guide cavity is arranged between each group of the oil inlets and the oil injection ports corresponding to the oil circuit laminated assembly, and the oil inlets are communicated with the oil injection ports through the oil guide cavity;
the oil-cooled motor shaft is provided with radial oil outlet holes corresponding to the oil inlet of the oil circuit laminated assembly, the radial oil outlet holes are communicated with the corresponding oil inlets respectively, the oil-cooled motor shaft comprises an oil inlet hole, the oil inlet hole is communicated to an oil cavity, and cooling oil is injected into the oil inlet through the radial oil outlet holes.
It is further characterized in that:
the oil-cooled motor shaft, the rotor iron core assembly and the rotor integrated oil circuit iron core assembly are fixedly arranged in the circumferential direction through a key groove structure;
an axial oil guide groove is further formed in the outer ring position, corresponding to each radial oil outlet hole, of the oil cooling motor shaft, so that smooth circulation of cooling oil can be guaranteed even if errors occur in axial alignment during size assembly;
each punching sheet in the rotor integrated oil path iron core component is integrated with a magnetic steel;
the rotor integrated oil circuit iron core assembly is formed by laminating rotor punching sheets, rotor oil separation punching sheets, rotor oil guide punching sheets and rotor oil injection punching sheets, each rotor integrated oil circuit iron core assembly comprises at least one rotor oil guide punching sheet and one rotor oil injection punching sheet, the rotor oil guide punching sheets and the rotor oil injection punching sheets are adjacently laminated to form an oil circuit laminated assembly during laminating, the rotor oil separation punching sheets are arranged on two sides adjacent to the oil circuit laminated assembly, and the rotor punching sheets are arranged on the outer sides of the lamination direction of the rotor oil separation punching sheets;
a plurality of oil inlets are annularly distributed on a radial inner ring of the rotor oil injection stamped sheet, a radial outer ring of the rotor oil injection stamped sheet is concave inwards in the thickness direction to form a plurality of oil injection ports, and the oil inlets and the oil injection ports are arranged in a one-to-one correspondence manner;
the rotor oil injection stamped sheet is provided with a plurality of oil guide grooves at intervals corresponding to the area between each group of oil inlets and oil injection ports, each rotor oil guide stamped sheet is combined in the areas between the oil inlets and the oil guide grooves, the oil guide grooves and the oil guide grooves, and the oil guide grooves and the oil injection ports to form communicated oil guide grooves, the communicated oil guide grooves are used for communicating adjacent oil inlets and oil guide grooves, adjacent oil guide grooves and oil guide grooves, and adjacent oil guide grooves and oil injection ports, so that cooling oil is guaranteed to be smoothly thrown out radially outwards after passing through the stamped sheet of the rotor;
the rotor punching sheet, the rotor oil separation punching sheet, the rotor oil guide punching sheet and the rotor oil injection punching sheet are punching sheets with the same shape and the same thickness;
the rotor punching sheet is provided with magnetic steel grooves which are symmetrically arranged, and the magnetic steel is arranged in the corresponding magnetic steel groove;
the rotor punching sheet is provided with lightening holes;
the rotor oil-separation stamped sheet has the same characteristics and dimensions as the rotor stamped sheet except no lightening hole;
the rotor oil injection stamped sheet is provided with an oil inlet, an oil guide groove and an oil injection port on the basis of the rotor stamped sheet;
the rotor oil guide punching sheet is provided with an oil guide groove on the basis of the rotor punching sheet.
After the structure of the invention is adopted, the oil-cooled motor rotor integrates the oil circuit in the rotor core, a cooling oil circuit branch is formed by an oil inlet, a corresponding oil guide groove and an oil injection port in the oil circuit laminated assembly of the rotor integrated oil circuit core assembly, and the cooling oil circuit branches can be arranged at different axial positions in the rotor core according to the heat dissipation requirement, so that a plurality of parallel smooth oil circuits are formed in the motor rotor, and the oil flow direction of each cooling oil circuit branch is as follows: oil in the inner cavity of the oil-cooled motor rotor enters an oil inlet through a radial oil hole, the oil guide grooves are communicated and communicated through the communicated oil guide grooves, the oil guide grooves are communicated and communicated with adjacent oil guide grooves through the communicated oil guide grooves, and finally the oil is sprayed out of an oil nozzle through the oil nozzle, cooling oil flows among grooves of the oil path laminated assembly in the whole process and cools a rotor core and magnetic steel, and finally the cooling stator core and a stator winding are radially thrown out of the oil nozzle, so that the internal temperature distribution of the motor rotor core is more balanced, the continuous working power of the motor is improved, the high temperature of the winding at the center part of the oil-cooled motor stator is eliminated, and the reliability of the system is improved.
Drawings
FIG. 1 is a schematic cross-sectional view of an oil cooled electric machine rotor according to an embodiment of the present invention;
FIG. 2 is a perspective view of a rotor core assembly of an embodiment of the present invention;
FIG. 3 is a perspective view of a rotor integrated oil gallery core assembly in accordance with an embodiment of the present invention;
FIG. 4 is a perspective view of an oil cooled motor shaft of an embodiment of the present invention;
FIG. 5 is a perspective view of a rotor plate according to an embodiment of the present invention;
FIG. 6 is a perspective view of a rotor oil-barrier sheet according to an embodiment of the present invention;
FIG. 7 is a perspective view of a rotor oil guiding sheet according to an embodiment of the present invention;
FIG. 8 is a perspective view of a rotor oil injection punch according to an embodiment of the present invention;
the names corresponding to the sequence numbers in the figure are as follows:
1, a rotor iron core assembly, 101 rotor punching sheets, 102 magnetic steels, 103 magnetic steels, 10101 rotor punching sheet inner holes, 10102 rotor punching sheet convex keys, 10103 magnetic steel grooves, 10104 magnetic steel grooves and 10105 weight reducing holes;
2, rotor integrated oil circuit iron core assembly, 201 rotor oil separation punching sheet, 20101 rotor oil separation punching sheet inner hole, 20102 rotor oil separation punching sheet convex key, 20103 magnetic steel groove, 20104 magnetic steel groove, 202 rotor oil guide punching sheet, 20201 rotor oil guide punching sheet inner hole, 20202 rotor oil guide punching sheet convex key, 20203 communication oil guide groove, 203 rotor oil spray punching sheet, 20301 rotor oil spray punching sheet inner hole, 20302 oil inlet, 20303 convex key, 20304 oil guide groove and 20305 oil spray opening;
3, a motor rotor shaft, a 301 oil inlet hole, a 302 axial oil guide groove, a 303 radial oil outlet hole and a 304 key groove.
Detailed Description
A kind of oil-cooled electrical machinery trochanter, the concrete embodiment is shown in fig. 1-8, it is made up of trochanter iron core assembly 1, trochanter integrated oil circuit iron core assembly 2, oil-cooled electrical machinery shaft 3;
the rotor iron core assembly 1 is formed by laminating rotor punching sheets 101 and is provided with magnetic steel 102 and magnetic steel 103, a protruding key is arranged in an inner hole of the rotor iron core assembly, and the key can be tightly matched with a key groove 304 on the oil-cooled motor shaft 3 through the key in the inner hole of the rotor iron core;
the rotor integrated oil circuit iron core assembly 2 forms an oil circuit passage in the rotor integrated oil circuit iron core through the combination of rotor punching sheets with different structures. In specific implementation, each rotor integrated oil circuit iron core assembly 2 is formed by laminating a rotor punching sheet 101, a rotor oil separation punching sheet 201, a rotor oil guide punching sheet 202 and a rotor oil injection punching sheet 203, each rotor integrated oil circuit iron core assembly 2 at least comprises one rotor oil guide punching sheet 202 and one rotor oil injection punching sheet 203, the rotor oil guide punching sheets 202 and the rotor oil injection punching sheets 203 are adjacently laminated to form an oil circuit laminated assembly in the laminating process, the rotor oil separation punching sheets 201 are adjacent to two sides of the oil circuit laminated assembly, a magnetic steel 102 and a magnetic steel 103 are installed on an iron core, a protruding key is arranged in an inner hole of the rotor integrated oil circuit iron core, and the protruding key can be tightly matched with a key groove 304 on an oil cooling motor shaft 3 through the key in the inner hole of the rotor iron core.
In a specific embodiment, the rotor sheet 101 is made of a soft magnetic material with the thickness of 0.15 mm-0.5 mm.
The inner hole of the rotor punching sheet 101 is provided with a rotor punching sheet convex key 10102 which is tightly matched with a key groove 304 of the motor shaft.
The rotor punching sheet 101 is provided with a magnetic steel groove 10103 and a magnetic steel groove 10104 which are symmetrically arranged.
The rotor punching sheet is provided with a lightening hole 10105.
Except the characteristic that the rotor oil-separating punching sheet 201 does not have the lightening hole 10105, other characteristics and dimensions are the same as those of the rotor punching sheet 101.
The rotor oil injection stamped sheet 203 is provided with an oil inlet 20302, an oil guide groove 20304 and an oil injection port 20305 on the basis of the rotor stamped sheet 101.
The oil inlet 20302 of the rotor oil injection stamped piece 203 is located on the inner hole 20301 of the rotor oil injection stamped piece, the number of the oil inlet is the same as the number of poles of the motor, and the oil inlet is circumferentially and symmetrically distributed.
The oil spray ports 20305 of the rotor oil spray stamped piece 203 are located on the outer circle of the rotor oil spray stamped piece 203 and are circumferentially and symmetrically distributed.
The oil guiding groove 20304 of the rotor oil jet punching sheet 203 is located between the oil inlet 20302 and the oil jet 20305, and is circumferentially and symmetrically distributed.
Each oil inlet 20302 of the rotor oil injection stamped sheet 203 corresponds to one oil injection port 20305, and at least one oil guide groove 20304 is arranged between the oil inlet 20302 and each oil injection port 20305, so that a group of oil inlets 20302, the oil guide grooves 20304 and the oil injection ports 20305 belong to the same oil circuit branch.
The rotor oil guiding punching sheet 202 is provided with a communicating oil guiding groove 20203 on the basis of the rotor punching sheet 101.
The communicating oil guide groove 20203 on the rotor oil guide punching sheet 202 is in a radial direction, each radial direction belongs to the same oil path branch, and the number of the branches is the same as the number of oil inlets of the rotor oil injection punching sheet 203 and is circumferentially and symmetrically distributed.
The number of the communicating oil guide grooves 20203 of each branch of the rotor oil guide punching sheet 202 is at least two.
When the rotor oil guiding stamped sheet 202 and the rotor oil injection stamped sheet 203 are stacked, the communicating oil guiding groove 20203 on each oil path branch on the rotor oil guiding stamped sheet 202 communicates the oil inlet 20302, the oil guiding groove 20304 and the oil injection port 20305 on the rotor oil injection stamped sheet 203, and the communicating passages are isolated by the surface of the rotor oil separation stamped sheet 201 to form an integral oil path.
The oil-cooled motor shaft 3 is provided with an oil inlet 301, cooling oil enters an inner oil cavity of the motor shaft from the oil inlet 301, a plurality of symmetrical radial oil outlet holes 303 are formed in the position, corresponding to an oil inlet 20302 of the rotor oil-injection stamped sheet 203 of the rotor integrated oil core assembly 2, on the oil-cooled motor shaft 3, and the inner oil cavity of the shaft is communicated with the oil inlet 20302 of the rotor oil-injection stamped sheet 203 through the oil outlet holes 303.
In specific implementation, an axial oil guiding groove 302 is formed on the surface of the motor shaft outside each radial oil outlet hole 303 of the motor shaft 3.
Symmetrical key grooves are formed in the surface of the outer circle of the oil cooling motor shaft 3.
In the specific embodiment, the number of the rotor core assemblies 1 is three, the number of the rotor integrated oil circuit core assemblies 2 is two, and one rotor integrated oil circuit core assembly 2 is arranged between every two rotor core assemblies 1, as shown in fig. 1.
The oil way enters an oil cavity in the motor shaft through an oil inlet hole 301 on the oil-cooled motor shaft 3, and the oil cavity in the shaft is communicated with an oil inlet hole 20302 of the rotor oil-injection stamped sheet 203 through a radial oil outlet hole 303 on the oil-cooled motor shaft 3, which corresponds to the oil inlet hole 20302 of the rotor oil-injection stamped sheet of the rotor integrated oil way core assembly 2.
The oil-cooled motor rotor of the invention integrates an oil circuit in the rotor core, and three punching sheets are adopted: rotor oil removal towards piece 201, rotor oil guide towards piece 202, rotor oil spout towards the simple combination of piece 203 and form cooling oil circuit branch road to can arrange the oil circuit according to the heat dissipation demand in the inside different positions of axial of rotor core, make the inside unblocked oil circuit that forms the multichannel parallelly connected of electric motor rotor, every oil circuit branch road cooling oil flow direction is: oil in an oil cavity in the motor rotor shaft 3 enters an oil inlet of the rotor oil injection stamped sheet 203 through radial oil 303 on the radial oil, further enters a communicated oil guide groove 20203 of the rotor oil guide stamped sheet, further enters an oil guide groove 20304 of the rotor oil injection stamped sheet, enters a communicated oil guide groove 20203 of the rotor oil guide stamped sheet, then enters an oil injection port 20305 of the rotor oil injection stamped sheet and is injected from an oil injection port 20305; in the whole process, cooling oil flows between the grooves of the rotor oil injection stamped sheet 203 and the rotor oil guide stamped sheet 202 and cools the rotor core and the magnetic steel, and finally the stator core and the stator winding are thrown out from an oil injection port of the rotor oil injection stamped sheet along the radial direction, so that the internal temperature distribution of the rotor core of the motor is more balanced, the continuous working power of the motor is improved, the high temperature of the winding at the central part of the stator of the oil-cooled motor is eliminated, and the reliability of the system is improved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. An oil-cooled electric machine rotor, comprising:
a rotor core assembly;
the rotor is integrated with an oil-way iron core assembly;
and an oil-cooled motor shaft;
the rotor iron core assemblies and the rotor integrated oil circuit iron core assemblies are sequentially sleeved in an axial area of the oil-cooled motor shaft in a spacing mode, the rotor integrated oil circuit iron core assemblies are arranged between the adjacent rotor iron core assemblies, and the rotor iron core assemblies are arranged between the adjacent rotor integrated oil circuit iron core assemblies;
the rotor core assembly is respectively arranged at the axial two ends of the oil cooling motor shaft;
each group of the rotor iron core components is formed by laminating a plurality of rotor punching sheets and is provided with magnetic steel;
each group of the rotor integrated oil circuit core assembly comprises an oil circuit laminated assembly, an oil inlet is arranged on the inner diameter of the oil circuit laminated assembly, a plurality of oil injection ports are arranged on the outer diameter of the oil circuit laminated assembly, the oil inlets are respectively arranged corresponding to the oil injection ports, an oil guide cavity is arranged between each group of the oil inlets and the oil injection ports corresponding to the oil circuit laminated assembly, and the oil inlets are communicated with the oil injection ports through the oil guide cavity;
the oil-cooled motor shaft is provided with radial oil outlet holes corresponding to the oil inlet of the oil circuit laminated assembly, the radial oil outlet holes are communicated with the corresponding oil inlets respectively, the oil-cooled motor shaft comprises an oil inlet hole, the oil inlet hole is communicated to an oil cavity, and cooling oil is injected into the oil inlet through the radial oil outlet holes.
2. An oil-cooled electric machine rotor as claimed in claim 1, wherein: the oil-cooled motor shaft, the rotor iron core assembly and the rotor integrated oil circuit iron core assembly are fixedly arranged in the circumferential direction through a key groove structure.
3. An oil-cooled electric motor rotor as claimed in claim 1, characterized in that: and an axial oil guide groove is also arranged at the outer ring position of the oil cooling motor shaft corresponding to each radial oil outlet hole.
4. An oil-cooled electric motor rotor as claimed in claim 1, characterized in that: and magnetic steel is integrated on each punching sheet in the rotor integrated oil path iron core component.
5. An oil-cooled electric motor rotor as claimed in claim 1, characterized in that: rotor integrated oil circuit iron core subassembly is folded by rotor towards piece, rotor oil separation towards piece, rotor oil guide towards piece, rotor oil spout towards piece and is folded and press to form, every group rotor integrated oil circuit iron core subassembly includes that at least one rotor leads oil and towards piece, a rotor oil spout towards piece, and the rotor leads oil towards piece and rotor oil spout towards piece is adjacent folds and presses the setting, forms oil circuit lamination subassembly when folding, and with the adjacent both sides of oil circuit lamination subassembly rotor oil separation towards piece, the rotor oil separation towards the piece fold the outside of pressing the direction do the rotor is towards the piece.
6. An oil-cooled electric motor rotor as claimed in claim 5, wherein: the radial inner ring of the rotor oil injection stamped sheet is annularly provided with a plurality of oil inlets, the radial outer ring of the rotor oil injection stamped sheet is recessed in the thickness direction to form a plurality of oil injection ports, and the oil inlets and the oil injection ports are arranged in a one-to-one correspondence manner.
7. An oil-cooled electric machine rotor as claimed in claim 6, wherein: the rotor oil spout is stamped regional interval between corresponding to every group oil inlet and the nozzle and is provided with a plurality of oil grooves of leading, every the rotor is led the oil and is stamped the oil inlet and lead the oil groove, lead the oil groove and lead the oil groove, lead the combination in the region between oil groove and the nozzle and form the intercommunication and lead the oil groove, the intercommunication is led the oil groove and is used for communicateing adjacent oil inlet and lead the oil groove, adjacent lead the oil groove and lead the oil groove, adjacent lead oil groove and nozzle.
8. An oil-cooled electric motor rotor as claimed in claim 5, wherein: the rotor punching sheet, the rotor oil separation punching sheet, the rotor oil guide punching sheet and the rotor oil injection punching sheet are punching sheets with the same shape and the same thickness.
9. An oil cooled electric machine rotor as claimed in claim 8, wherein: the rotor punching sheet is provided with magnetic steel grooves which are symmetrically arranged, and the magnetic steel is arranged in the corresponding magnetic steel groove; and the rotor punching sheet is provided with lightening holes.
10. An oil-cooled electric motor rotor as claimed in claim 9, wherein: the rotor oil-separation stamped sheet has the same characteristics and dimensions as the rotor stamped sheet except no lightening hole; the rotor oil injection stamped sheet is provided with an oil inlet, an oil guide groove and an oil injection port on the basis of the rotor stamped sheet; the rotor oil guide punching sheet is provided with an oil guide groove on the basis of the rotor punching sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210207033.8A CN114567101A (en) | 2022-03-03 | 2022-03-03 | Oil-cooled motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210207033.8A CN114567101A (en) | 2022-03-03 | 2022-03-03 | Oil-cooled motor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114567101A true CN114567101A (en) | 2022-05-31 |
Family
ID=81717428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210207033.8A Pending CN114567101A (en) | 2022-03-03 | 2022-03-03 | Oil-cooled motor rotor |
Country Status (1)
| Country | Link |
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| CN (1) | CN114567101A (en) |
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|---|---|---|---|---|
| JP2013013182A (en) * | 2011-06-28 | 2013-01-17 | Aisin Seiki Co Ltd | Cooling structure for motor |
| JP2015053831A (en) * | 2013-09-09 | 2015-03-19 | トヨタ自動車株式会社 | Rotor of rotating electrical machine |
| JP2016054608A (en) * | 2014-09-03 | 2016-04-14 | トヨタ自動車株式会社 | Rotor for rotary electric machine |
| US20160372983A1 (en) * | 2015-06-16 | 2016-12-22 | Toyota Jidosha Kabushiki Kaisha | Rotor of rotary electric machine |
| CN109742883A (en) * | 2019-01-28 | 2019-05-10 | 曲阜天科电动科技有限公司 | A kind of cooling oil path of oil-cooled motor rotor |
| CN113241880A (en) * | 2021-05-27 | 2021-08-10 | 智新科技股份有限公司 | Oil-cooled motor with built-in oil way structure |
-
2022
- 2022-03-03 CN CN202210207033.8A patent/CN114567101A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013013182A (en) * | 2011-06-28 | 2013-01-17 | Aisin Seiki Co Ltd | Cooling structure for motor |
| JP2015053831A (en) * | 2013-09-09 | 2015-03-19 | トヨタ自動車株式会社 | Rotor of rotating electrical machine |
| JP2016054608A (en) * | 2014-09-03 | 2016-04-14 | トヨタ自動車株式会社 | Rotor for rotary electric machine |
| US20160372983A1 (en) * | 2015-06-16 | 2016-12-22 | Toyota Jidosha Kabushiki Kaisha | Rotor of rotary electric machine |
| CN109742883A (en) * | 2019-01-28 | 2019-05-10 | 曲阜天科电动科技有限公司 | A kind of cooling oil path of oil-cooled motor rotor |
| CN113241880A (en) * | 2021-05-27 | 2021-08-10 | 智新科技股份有限公司 | Oil-cooled motor with built-in oil way structure |
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