CN116896193A - Rotor lamination, rotor core and rotor - Google Patents
Rotor lamination, rotor core and rotor Download PDFInfo
- Publication number
- CN116896193A CN116896193A CN202311159622.4A CN202311159622A CN116896193A CN 116896193 A CN116896193 A CN 116896193A CN 202311159622 A CN202311159622 A CN 202311159622A CN 116896193 A CN116896193 A CN 116896193A
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- China
- Prior art keywords
- magnetic steel
- rotor
- steel groove
- dimension
- groove
- Prior art date
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- Granted
Links
- 238000003475 lamination Methods 0.000 title claims abstract description 58
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 137
- 239000010959 steel Substances 0.000 claims abstract description 137
- 239000002826 coolant Substances 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 7
- 230000005489 elastic deformation Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000006185 dispersion Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 7
- 239000004033 plastic Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000004382 potting Methods 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000005347 demagnetization Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920006335 epoxy glue Polymers 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- 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
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
-
- 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]
- H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model provides a rotor lamination, a rotor core and a rotor. The rotor lamination is formed with a plurality of magnet steel grooves (11) that are used for supplying the magnet steel to pass through, the edge of magnet steel groove (11) is formed with one or more elasticity fixed knot constructs (12), every elasticity fixed knot constructs (12) including two at least holes (121), be formed with protruding boss (123) to magnet steel groove (11) between hole (121) and magnet steel groove (11), on length direction (L) of magnet steel groove (11), center pillar (122) do not surpass boss (123), under the circumstances that magnet steel inserted magnet steel groove (11), boss (123) and magnet steel (11) interference fit, the interference is 0.01mm ~0.03mm, and elastic deformation takes place for boss (123). The rotor lamination according to the utility model can provide a stable and reliable fixing force for the magnetic steel in an elastically deformable manner by using the elastic fixing structure. The rotor core has low manufacturing cost and high reliability. The rotor is convenient to assemble, and the magnetic steel is not easy to loosen from the iron core.
Description
Technical Field
The present utility model relates to the field of electric machines, and more particularly to rotor laminations, rotor cores and rotors for permanent magnet electric machines.
Background
The rotor of the existing permanent magnet motor is usually fixed by adopting potting epoxy glue or injection nylon resin, so that the cost is high and the production time is long.
Chinese utility model CN218498905U discloses a magnetic steel fixing structure, which provides a spring plate comprising a side plate, wherein the side plate is clamped between the magnetic steel and the rotor core, and provides a clamping force for the magnetic steel. Disadvantages of this approach include: the side plates occupy the space inside the iron core, and the gap between the magnetic steel and the iron core is increased, so that the magnetic resistance of the magnetic circuit is increased, and the torque provided by the rotor is reduced.
Chinese utility model CN211239490U, CN208835867U and chinese patent publication CN116131490a disclose a series of improvements to rotor laminations that have protrusions on the laminations at the locations of the magnet steel slots that can be squeezed during the magnet steel insertion process to create a force for fixing the magnet steel. However, in these solutions, the protrusion and the magnetic steel are usually plastically deformed after being extruded, and the magnetic steel is fixed by means of the plastic deformation; however, the reliability of the fatigue and durability of the plastically deformed material is not high, so that the fixing force that can be provided for the magnetic steel is limited, and the reliability of such a solution is to be improved, especially in view of the high-speed rotation of the rotor that is required during operation.
Disclosure of Invention
The object of the present utility model is to overcome or at least alleviate the above-mentioned drawbacks of the prior art and to provide a rotor lamination, a rotor core and a rotor which are simple in construction and which provide a fixing force by elastic deformation.
According to a first aspect of the present utility model, there is provided a rotor lamination formed with a plurality of magnetic steel grooves for passing magnetic steel, the edges of the magnetic steel grooves being formed with one or more elastic fixing structures, wherein,
each elastic fixing structure comprises at least two holes, a center column is formed between two adjacent holes,
a convex part protruding towards the magnetic steel groove is formed between the hole and the magnetic steel groove, the center column does not exceed the area where the convex part is positioned in the length direction of the magnetic steel groove,
under the condition that the magnetic steel is inserted into the magnetic steel groove, the protruding portion is in interference fit with the magnetic steel, the interference is 0.01 mm-0.03 mm, and the protruding portion is elastically deformed.
In at least one embodiment, at least one of the apertures includes an inner portion and an outer portion,
in the longitudinal direction of the magnetic steel groove, the inner side portion is located in a region where the convex portion is located, and the outer side portion is located in a region beyond the convex portion in a direction away from the center pillar.
In at least one embodiment, the dimension of the outer portion in the length direction of the magnetic steel groove is 0.9 to 1.1 times the dimension of the inner portion in the thickness direction of the magnetic steel groove.
In at least one embodiment, the size of the hole is larger than the size of the center pillar in the length direction of the magnetic steel groove.
In at least one embodiment, in the thickness direction of the magnetic steel groove, a distance from an edge of the inner portion near the magnetic steel groove to an edge of the magnetic steel groove is equal to a distance from an edge of the outer portion near the magnetic steel groove to an edge of the magnetic steel groove.
In at least one embodiment, in the length direction of the magnetic steel groove, the size of the protruding portion is 2.5 to 3.5 times the size of the middle column, and/or
In the thickness direction of the magnetic steel groove, the dimension covered by the hole is 1.5-2.5 times of the distance between the hole and the magnetic steel groove, and/or
The dimension of the center column in the length direction of the magnetic steel groove is equal to the distance between the holes and the magnetic steel groove in the thickness direction of the magnetic steel groove.
In at least one embodiment, the dimension of the convex portion in the length direction of the magnetic steel groove is not less than 1mm.
According to a second aspect of the present utility model, there is provided a rotor core comprising a plurality of laminations, at least some of the laminations of the plurality of laminations being rotor laminations according to the first aspect of the present utility model.
According to a third aspect of the present utility model, there is provided a rotor comprising magnetic steel and a rotor core provided according to the second aspect of the present utility model, the magnetic steel being inserted in a magnetic steel groove of a rotor lamination of the rotor core.
In at least one embodiment, the ends in the longitudinal direction of the magnetic steel groove form a gap for the coolant to pass through.
The rotor lamination according to the utility model can provide a stable and reliable fixing force for the magnetic steel in an elastically deformable manner by using the elastic fixing structure. The rotor core has low manufacturing cost and high reliability. The rotor is convenient to assemble, and the magnetic steel is not easy to loosen from the iron core.
Drawings
Fig. 1 is a schematic view of a rotor according to one embodiment of the utility model.
Fig. 2 is a schematic view of an iron core stack of a rotor according to an embodiment of the present utility model.
Fig. 3 is a schematic view of a magnetic steel of a rotor according to an embodiment of the present utility model.
Fig. 4 is a schematic view of a part of the structure of a rotor lamination according to a first embodiment of the utility model.
Fig. 5 and 6 are partially enlarged schematic views of fig. 4.
Fig. 7 shows stress-strain curves of the material of which the laminate is made according to an embodiment of the utility model.
Fig. 8 is a schematic view of a part of the structure of a rotor lamination according to a second embodiment of the utility model.
Fig. 9 is a schematic view of a part of the structure of a rotor lamination according to a third embodiment of the utility model.
Reference numerals illustrate:
10. an iron core stack; 10a lamination; 11. a magnetic steel groove; 12. an elastic fixing structure; 121. a hole; 1211. an inner portion; 1212. an outer portion; 122. a center column; 123. a convex portion; 12a first stress-dispersing region; 12b second stress-dispersing region; 20. an end plate; 30. magnetic steel;
g gap; l length direction; and D, the thickness direction.
Detailed Description
Exemplary embodiments of the present utility model are described below with reference to the accompanying drawings. It should be understood that these specific illustrations are for the purpose of illustrating how one skilled in the art may practice the utility model, and are not intended to be exhaustive of all of the possible ways of practicing the utility model, nor to limit the scope of the utility model.
First embodiment
Referring to fig. 1 to 9, a rotor lamination, a rotor core, and a rotor according to a first embodiment of the utility model are described.
Referring to fig. 1 to 4, the rotor according to the present utility model includes a core, magnetic steels 30 inserted in the core, and end plates 20 provided to both axial ends of the core. Wherein each core comprises one or more (in this embodiment 6) core stacks 10. Each core stack 10 includes a plurality of rotor laminations (referred to as laminations 10a, also referred to as silicon steel sheets).
Specifically, each lamination 10a is formed with a plurality of magnetic steel grooves 11, and edges of the magnetic steel grooves 11 are formed with one or more (2 in this embodiment) elastic fixing structures 12. In the case where the magnetic steel 30 is inserted into the magnetic steel groove 11, the magnetic steel 30 is interference-fitted with the lamination 10a, so that the elastic fixing structure 12 is elastically deformed to generate an elastic force, which can serve as a stable fixing force for clamping the magnetic steel 30.
Next, the specific structure of the elastic fixing structure 12 and its operation principle will be described in detail with reference to fig. 4 to 6.
In the following description, the length direction L and the thickness direction D of the magnetic steel groove 11 are introduced. The length direction L is the overall extending direction of the magnetic steel groove 11, and corresponds to the length direction of the magnetic steel 30; the thickness direction D is perpendicular to the length direction L, and corresponds to the thickness direction of the magnetic steel 30. It should be understood that the length direction L and the thickness direction D are defined for each individual magnetic steel groove 11, and that, referring to fig. 4, their length direction L may be different for different magnetic steel grooves 11, and their thickness direction D may be different.
In this embodiment, each elastic fixing structure 12 includes two holes 121, and a center pillar 122 is formed between the two holes 121. Along the thickness direction D of the magnetic steel groove 11, a convex portion 123 protruding toward the magnetic steel groove 11 is formed on the opposite side of the center pillar 122. Along the length direction L of the magnetic steel groove 11, the convex portions 123 extend beyond both sides of the center pillar 122 and partially cover the areas where the holes 121 on both sides are located.
In the case where the magnetic steel 30 is inserted into the magnetic steel groove 11, the magnetic steel 30 is interference-fitted with the lamination 10a, the interference being expressed as a dimension W1 of the projection 123 in the thickness direction D, optionally, the interference being 0.01mm to 0.03mm.
When the protrusion 123 interacts with the magnetic steel 30 to generate force, the stress around the protrusion 123 is dispersed around the two holes 121 opposite to the protrusion 123, so that the force received by the protrusion 123 is in the elastic deformation region of the corresponding material. Or, in the visual sense, the hole 121 may absorb a part of the stress, thereby preventing the protrusion 123 from being plastically deformed due to the excessive stress. Meanwhile, the center column 122 plays a role in preventing the middle of the convex part 123 from being sunken, so that stress concentration can not occur on the surface of the convex part 123, and the magnetic steel is prevented from being pressed due to the stress concentration.
The bore 121 includes an inner portion 1211 and an outer portion 1212. The inner portion 1211 is adjacent to the center pillar 122 and does not protrude beyond the protrusion 123 in the longitudinal direction L, or in other words, the longitudinal direction L, the inner portion 1211 is located in a region where the protrusion 123 is located. The outer portion 1212 meets the inner portion 1211 on a side facing away from the center pillar 122, and the outer portion 1212 extends beyond the region where the protrusion 123 is located in the longitudinal direction L.
A first stress dispersion region 12a (i.e., portions at both ends of the protrusion 123) is formed between the inner portion 1211 and the magnetic steel groove 11, and a second stress dispersion region 12b is formed between the outer portion 1212 and the magnetic steel groove 11. The second stress dispersing region 12b can disperse stress to a region away from the edge of the protrusion 123, avoiding concentration of stress at the edge of the protrusion 123.
Alternatively, in the thickness direction D, the dimension W3 of the first stress dispersion region 12a (or the distance from the edge of the inner portion 1211 near the magnetic steel groove 11 to the edge of the magnetic steel groove 11) and the dimension W4 of the second stress dispersion region 12b (or the distance from the edge of the outer portion 1212 near the magnetic steel groove 11 to the edge of the magnetic steel groove 11) are equal, so that the effects of the first stress dispersion region 12a and the second stress dispersion region 12b to disperse stresses are equivalent.
Alternatively, the dimension L3 of the outer portion 1212 in the length direction L of the magnetic steel groove 11 is 0.9 to 1.1 times the dimension W2 of the inner portion 1211 in the thickness direction D of the magnetic steel groove 11; preferably, l3=w2.
Alternatively, in the thickness direction D of the magnetic steel groove 11, the dimension W2 covered by the hole 121 is 1.5 to 2.5 times the dimension W3 of the first stress dispersion region 12a (or the distance from the edge of the inner portion 1211 near the magnetic steel groove 11 to the edge of the magnetic steel groove 11); preferably, w2=2×w3.
Alternatively, the dimension L1 of the center pillar 122 in the longitudinal direction L is equal to the dimension W3 of the first stress dispersion region 12a, so that the dispersion effect of the center pillar 122 on the stress is also equivalent to the first stress dispersion region 12 a.
Alternatively, the dimension L2 of the protrusion 123 in the length direction L is 2.5 to 3.5 times, preferably 3 times, the dimension L1 of the center pillar 122 in the length direction L. Alternatively, L2 is not less than 1mm.
Alternatively, in the length direction L, the dimension L4 of the hole 121 is larger than the dimension L1 of the center pillar 122.
Fig. 7 shows the stress-strain curve of the material from which laminate 10a is made, as can be seen from the figure, the yield strength of the material is 392MPa. It is considered that, in a case where the force distributed to the convex portion 123 does not exceed 392MPa, the deformation of the convex portion 123 is simply an elastic deformation.
Applicant uses simulation software ANSYS Workbench to simulate the equivalent stress and equivalent plastic deformation of laminate 10a under force from the internal magnet steel with 0.01mm interference produced by the protrusions for simulation analysis. The maximum value of the equivalent stress shown by the simulation result is not more than 100MPa and is far less than the yield strength 392MPa; and the plastic deformation is 0, and no plastic deformation occurs around the magnetic steel groove. The simulation results show that the elastic fixing structure of the rotor lamination can not easily generate fatigue and durability failure caused by plastic deformation in the running process of the motor, and can keep the fixing force unchanged.
It should be noted that, since the elastic fixing structure 12 of the rotor lamination according to the present utility model can provide a sufficient and reliable fixing force for the magnetic steel, the structure for bonding the magnetic steel 30 may not be provided in the magnetic steel groove 11 by, for example, potting or the like. Referring to fig. 2, both ends of the inside of the magnetic steel groove 11 in the longitudinal direction may be left free to form a gap G. The gap G may allow coolant to pass through, for example, in an oil-cooled motor, cooling oil may be passed through the gap G, thereby allowing the magnetic steel 30 to be directly cooled in contact with the cooling oil, avoiding the problem of magnetic steel demagnetization due to high temperature.
Second embodiment
A second embodiment of the present utility model is described with reference to fig. 8. The second embodiment is a modification of the first embodiment, the same reference numerals are given to the same or similar components as those in the first embodiment in terms of structure or function, and detailed description of these components is omitted.
The main difference between this embodiment and the first embodiment is that each elastic fixing structure 12 includes two center posts 122; accordingly, there are three holes 121, wherein the hole 121 located in the middle is opposite to the convex portion 123, or is located in the middle of the convex portion 123, and the dimension of the hole 121 in the thickness direction D is not affected by the different positions in the length direction L.
This approach is applicable to situations where a large holding force is required to be provided to the magnetic steel. More holes 121 and more center posts 122 may distribute stress more evenly to areas away from the protrusions 123.
Third embodiment
A third embodiment of the present utility model is described with reference to fig. 9. The third embodiment is a modification of the first embodiment, the same reference numerals are given to the same or similar components as those in the first embodiment in terms of structure or function, and detailed description of these components is omitted.
The main difference between this embodiment and the first embodiment is the specific shape of the aperture 121. The present utility model is not limited to the specific shape of the holes 121, and the principle of arranging the holes 121 is to distribute stress as uniformly as possible.
In the present embodiment, the inner portion 1211 has a substantially circular shape, the outer portion 1212 has an oblong shape, and the entire hole 121 has an axisymmetric shape, so that stress is uniformly distributed.
It will be appreciated that the above-described embodiments and portions of aspects or features thereof may be suitably combined.
The present utility model has at least one of the following advantages:
(i) The rotor lamination provided by the utility model is provided with the elastic fixing structure, and the elastic fixing structure is elastically deformed by interference fit of the magnetic steel and the iron core. The elastic fixing structure can ensure that the elastic fixing structure can not locally concentrate stress by dispersing the stress of the contact area around the hole, so that the elastic force provided for the magnetic steel is stable and reliable, and the magnetic steel can not fall off in the working process of the rotor.
(ii) The rotor lamination is convenient to manufacture, and the elastic fixing structure can be formed by blanking once; when the rotor is assembled, the magnetic steel can be directly inserted into the magnetic steel groove without additional adhesive, so that the assembly process is simple, and the material consumption is saved.
(iii) Because the elastic fixing structure can provide enough fixing force for the magnetic steel, other materials or structures for fixing the magnetic steel can be omitted, for example, potting epoxy glue or injection nylon resin can be omitted for fixing the magnetic steel. Therefore, the space originally used for filling glue or resin in the magnetic steel groove can be left, and the gap can be used for supplying the coolant of the cold motor. The coolant directly cools the magnetic steel in a contact mode, so that the problem of demagnetization of the magnetic steel caused by high temperature is solved.
Of course, the present utility model is not limited to the above-described embodiments, and various modifications may be made to the above-described embodiments of the present utility model by those skilled in the art in light of the present teachings without departing from the scope of the present utility model. For example:
(i) The rotor laminations comprised by the core according to the present utility model may each comprise a resilient mounting structure 12 or only a portion of the rotor laminations may comprise a resilient mounting structure 12. In the case where a portion of the rotor laminations include the elastic securing structure 12 (such rotor laminations are referred to as fixed structure laminations) and another portion of the rotor laminations do not include the elastic securing structure 12 (such rotor laminations are referred to as fixed structure-less laminations), the fixed structure laminations and the fixed structure-less laminations may be spaced apart; or a plurality of lamination sheets with fixed structures are stacked to form a lamination group with fixed structures, a plurality of lamination sheets without fixed structures are stacked to form a lamination group without fixed structures, and the lamination group with fixed structures and the lamination group without fixed structures are arranged at intervals.
(ii) The dimensions of the various parts of the elastic fixing structure 12 can be adaptively adjusted according to the specific structure and dimensions of the motor, for example, by changing the interference of the protrusion 123 and the shape and dimensions of the hole 121, to adjust the magnetic steel fixing pressure.
Claims (10)
1. A rotor lamination, which is formed with a plurality of magnetic steel grooves for passing magnetic steel, the edges of the magnetic steel grooves are formed with one or a plurality of elastic fixing structures, characterized in that,
each elastic fixing structure comprises at least two holes, a center column is formed between two adjacent holes,
a convex part protruding towards the magnetic steel groove is formed between the hole and the magnetic steel groove, the center column does not exceed the area where the convex part is positioned in the length direction of the magnetic steel groove,
under the condition that the magnetic steel is inserted into the magnetic steel groove, the protruding portion is in interference fit with the magnetic steel, the interference is 0.01 mm-0.03 mm, and the protruding portion is elastically deformed.
2. The rotor lamination of claim 1, wherein at least one of the apertures comprises an inner portion and an outer portion,
in the longitudinal direction of the magnetic steel groove, the inner side portion is located in a region where the convex portion is located, and the outer side portion is located in a region beyond the convex portion in a direction away from the center pillar.
3. The rotor lamination according to claim 2, characterized in that the dimension of the outer portion in the length direction of the magnetic steel groove is 0.9 to 1.1 times the dimension of the inner portion in the thickness direction of the magnetic steel groove.
4. The rotor lamination according to claim 2, characterized in that the dimension of the hole in the length direction of the magnetic steel groove is larger than the dimension of the center post.
5. The rotor lamination according to claim 2, characterized in that a distance from an edge of the inner portion near the magnetic steel groove to an edge of the magnetic steel groove in a thickness direction of the magnetic steel groove is equal to a distance from the edge of the outer portion near the magnetic steel groove to the edge of the magnetic steel groove.
6. The rotor lamination according to claim 2, characterized in that the dimension of the protrusion in the length direction of the magnetic steel groove is 2.5-3.5 times the dimension of the middle post, and/or
In the thickness direction of the magnetic steel groove, the dimension covered by the hole is 1.5-2.5 times of the distance between the hole and the magnetic steel groove, and/or
The dimension of the center column in the length direction of the magnetic steel groove is equal to the distance between the holes and the magnetic steel groove in the thickness direction of the magnetic steel groove.
7. The rotor lamination according to any one of claims 1 to 6, characterized in that the dimension of the projection in the length direction of the magnetic steel groove is not less than 1mm.
8. A rotor core comprising a plurality of laminations, at least some of the laminations of the plurality of laminations being the rotor laminations of any one of claims 1 to 7.
9. A rotor comprising magnetic steel and the rotor core according to claim 8, the magnetic steel being inserted in a magnetic steel groove of a rotor lamination of the rotor core.
10. The rotor as set forth in claim 9 wherein ends in the length direction within the magnetic steel grooves form gaps for passing coolant therethrough.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311159622.4A CN116896193B (en) | 2023-09-11 | 2023-09-11 | Rotor lamination, rotor core and rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311159622.4A CN116896193B (en) | 2023-09-11 | 2023-09-11 | Rotor lamination, rotor core and rotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116896193A true CN116896193A (en) | 2023-10-17 |
| CN116896193B CN116896193B (en) | 2023-12-12 |
Family
ID=88315235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311159622.4A Active CN116896193B (en) | 2023-09-11 | 2023-09-11 | Rotor lamination, rotor core and rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116896193B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111555487A (en) * | 2019-02-12 | 2020-08-18 | 广东威灵电机制造有限公司 | Motor rotor and motor with same |
| CN115021500A (en) * | 2022-04-20 | 2022-09-06 | 苏州范斯特机械科技有限公司 | Exempt from to mould plastics automatic gear magnet steel motor core |
| WO2023285455A1 (en) * | 2021-07-14 | 2023-01-19 | Zf Friedrichshafen Ag | Rotor lamination, rotor having a plurality of rotor laminations and method for producing a rotor |
| CN116131490A (en) * | 2023-01-03 | 2023-05-16 | 合肥巨一动力系统有限公司 | Rotor core structure for mechanically fixing magnetic steel |
-
2023
- 2023-09-11 CN CN202311159622.4A patent/CN116896193B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111555487A (en) * | 2019-02-12 | 2020-08-18 | 广东威灵电机制造有限公司 | Motor rotor and motor with same |
| WO2023285455A1 (en) * | 2021-07-14 | 2023-01-19 | Zf Friedrichshafen Ag | Rotor lamination, rotor having a plurality of rotor laminations and method for producing a rotor |
| CN115021500A (en) * | 2022-04-20 | 2022-09-06 | 苏州范斯特机械科技有限公司 | Exempt from to mould plastics automatic gear magnet steel motor core |
| CN116131490A (en) * | 2023-01-03 | 2023-05-16 | 合肥巨一动力系统有限公司 | Rotor core structure for mechanically fixing magnetic steel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116896193B (en) | 2023-12-12 |
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