CN111448745A - Rotor for an electric machine - Google Patents
Rotor for an electric machine Download PDFInfo
- Publication number
- CN111448745A CN111448745A CN201880067783.1A CN201880067783A CN111448745A CN 111448745 A CN111448745 A CN 111448745A CN 201880067783 A CN201880067783 A CN 201880067783A CN 111448745 A CN111448745 A CN 111448745A
- Authority
- CN
- China
- Prior art keywords
- rotor
- laminated core
- damper
- rubber
- elastic element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/16—Centering rotors within the stator; Balancing rotors
- H02K15/165—Balancing the rotor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
- F16F15/131—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon the rotating system comprising two or more gyratory masses
- F16F15/13107—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon the rotating system comprising two or more gyratory masses for damping of axial or radial, i.e. non-torsional vibrations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/14—Suppression of vibrations in rotating systems by making use of members moving with the system using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers
- F16F15/1407—Suppression of vibrations in rotating systems by making use of members moving with the system using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers the rotation being limited with respect to the driving means
- F16F15/1414—Masses driven by elastic elements
- F16F15/1435—Elastomeric springs, i.e. made of plastic or rubber
- F16F15/1442—Elastomeric springs, i.e. made of plastic or rubber with a single mass
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/30—Flywheels
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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
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
- H02K1/30—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures using intermediate parts, e.g. spiders
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/003—Couplings; Details of shafts
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/02—Additional mass for increasing inertia, e.g. flywheels
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/04—Balancing means
-
- 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
-
- 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
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The invention relates to a rotor (10) for arrangement in an electric machine (11), having a hollow-cylindrical laminated core carrier (12), on the outer peripheral surface (16) of which a rotor laminated core (14) can be arranged, and at each axial end of the laminated core carrier (12) an end flange (18) is arranged, wherein each end flange (18) has a journal (20), and a damper (24) is arranged and/or formed in the hollow-cylindrical laminated core carrier (12).
Description
The invention relates to a rotor for arrangement in an electric machine, wherein the rotor has an integrated vibration damper. The invention also relates to an electric machine having a rotor according to the invention, and to a motor vehicle having an electric machine according to the invention.
It is well known to have electrical machines with rotors. Known electric machines generally comprise a stator, and a rotor rotatable in the stator about a rotor rotation axis.
Furthermore, it is known that during operation flexural vibrations are continuously generated in the rotor shaft of the rotor. The main cause for this may be the large variation in the shaft rotation speed during acceleration and braking. However, an imbalance of the rotor can also trigger bending vibrations. Therefore, rotors with vibration dampers are also known, which are designed to avoid or reduce harmful torsional vibrations in the rotatable shaft of the electric machine during start-up or shut-down, or during normal operation of the electric machine.
For example, US 2010/0225121 a1 describes a rotating electrical machine in which a torsional vibration damper is integrated in the rotating electrical machine. The motor has a rotor laminated core having a first end and a second end. The integrated torsional vibration damper consists of a rotationally elastic coupling part and a torsional damper
Make up and ensure mechanical damping. The integrated torsional vibration damper is attached to the rotatable shaft of the motor by a flange. The first end of the rotor laminated core is attached to the integrated torsional vibration damper by a suitable structural element (e.g., a mounting flange) and is not directly fixedly mounted on the rotatable shaft.
The known rotor or the known electric machine has the disadvantage that an increased installation space is required in the axial direction, since the torsional vibration damper is flanged to the rotor laminated core in the axial direction and therefore requires a correspondingly large installation space in the longitudinal direction of the electric machine.
It is an object of the present invention to provide a rotor for an electrical machine with improved operating performance and reduced installation space requirements.
This object is achieved by means of the subject matter of the independent claims. Advantageous refinements of the invention are specified in the dependent claims, in the description and in the drawings, wherein each feature can individually and in combination form an aspect of the invention.
According to the invention, a rotor for arrangement in an electric machine is provided, having a hollow-cylindrical laminated core carrier, on the outer peripheral surface of which a rotor laminated core can be arranged and at each axial end of which an end flange is arranged, wherein each end flange has a journal and in which a damper is arranged and/or formed.
In other words, an aspect of the present invention is to provide a rotor for an electric machine having a hollow cylindrical laminated core holder. The laminated core carrier may be, for example, a hollow rotor shaft. At least one rotor laminated core can be arranged and/or arranged on the laminated core carrier. The rotor laminated core can therefore preferably be arranged rotatably fixed on the laminated core carrier and transmit the torque to the laminated core carrier. An end flange is arranged at each axial end of the laminated core carrier, wherein each end flange has a journal which is usually formed coaxially to the rotor axis of rotation.
The damper is arranged inside the hollow cylindrical laminated core carrier or the hollow rotor shaft. The damper acts directly on the rotor or hollow rotor shaft, so that the damper can reduce undesirable vibrations and/or noise during power generation and thus positively influence the operating behavior of the rotor. The natural vibration of the rotor causing noise may be transmitted to the damper. The design of the vibration damper is preferably adapted to the frequencies which may occur during operation of the rotor. These may preferably be predetermined by simulation and/or experimentation. In this way, a rotor with an integrated damper is provided, which may require a reduced installation space and have improved operating performance. The space structure is saved, and meanwhile, the production cost can be reduced. In addition, the service life and/or reliability of the rotor or the motor may be improved.
A vibration damper refers to a vibratable mass-spring damping system which in principle can be configured in many different ways. An advantageous development of the invention provides that the damper comprises a rubber-elastic element with at least one absorption mass arranged and/or embedded in the rubber-elastic element. The rubber-elastic element is preferably an elastomer, in particular a silicone elastomer, and very particularly preferably a vulcanized silicone elastomer. The silicone elastomer is adapted and configured for converting vibrational energy into heat. The absorption mass can be configured arbitrarily. Typically, the absorption mass has a higher density than the rubber-elastic element. Preferably, the absorption mass is formed as a metal core, wherein, however, the absorption mass is not limited to only metal cores. The advantage of a metal core is that it is simple and cheap to produce.
An advantageous development of the invention provides that the absorption mass is held inside the rubber-elastic element in the axial direction of the rotor and in the radial direction of the rotor, wherein at least part of the rubber-elastic element can vibrate in the radial direction as a result of the rotation of the rotor about its axis of rotation and the absorption mass vibrates in the radial direction. This means that the absorption mass is positioned inside the rubber-elastic element in the radial direction and in the axial direction. The absorption mass serves as a vibrating mass inside the rubber-elastic element, and the rubber-elastic element performs the functions of a spring and a damper. The undesired vibration excitation of the rotor caused by its rotation absorbs the mass to vibrate in the radial direction. Because the absorbing mass extracts energy from the excitation vibrations, the vibrations are damped.
The absorption mass can be connected to the rubber-elastic element in a number of different ways. A preferred development of the invention provides that the absorption mass is arranged in the rubber-elastic element by means of a substance bond and/or form fit. For example, the absorbent mass and the rubber-elastic element may be vulcanized together, pressed together and/or bonded together. In this way, the absorption mass can be positioned in the rubber-elastic element.
An advantageous development of the invention provides that the absorber mass is arranged centrally in the longitudinal direction of the laminated core carrier, wherein this does not mean that the absorber mass lies on the rotor rotation axis. Instead, the absorption mass is arranged spaced apart from the rotor axis of rotation in the radial direction.
A preferred refinement of the invention provides that the vibration damper has a rectilinear shape in a longitudinal section through the rotor. In this way, the damper is preferably arranged coaxially in the laminated core carrier and clamped between the end flanges. In the radial direction, the damper is spaced apart over its entire length from the inner housing surface of the laminated core carrier, so that the absorber mass can vibrate in the radial direction.
Alternatively, a preferred refinement of the invention provides that the vibration damper has a dumbbell shape in a longitudinal section through the rotor. The damper thus has an intermediate portion between the respective end portions, which intermediate portion has a reduced outer diameter compared to the respective end portions. The end portion of the damper rests at least partially against the inner shell surface of the laminated core support, whereby the damper can be arranged securely in place on the laminated core support. The intermediate portion is configured such that it can vibrate in a radial direction. Thus, the absorption mass is arranged in the intermediate portion.
An advantageous development of the invention provides that the vibration damper is arranged in the laminated core carrier and/or is connected to the inner housing surface of the laminated core carrier by means of a mass bond and/or form fit. The substance-bound connection is preferably a glue connection. A form-fitting connection means that the rubber-elastic element bears against the laminated core carrier and/or the end flange and is thus fixed in position.
According to a preferred refinement of the invention, it is provided that the face flange and the journal have coaxial first bores, that the damper has coaxial second bores, and that the first bores and the second bores are connected together to form a continuous cooling channel. Thus, a cooling channel extends through the rotor, through which cooling medium can be conveyed. The cooling channels are formed continuously. This means that the second bore formed in the damper is adjacent to the first bore formed in the end flange and the journal. It is essential here that the damper itself forms part of the cooling channel, i.e. the peripheral surface of the cooling channel. In this way, a rotor is provided which can be easily cooled and which can have improved running properties, requires less installation space and has a lighter weight.
The cooling medium preferably refers to a cooling fluid. The cooling fluid is particularly preferably oil.
Against this background, an advantageous development of the invention provides that each journal has at least one radial bore which extends as far as the axial first bore. The cooling medium can thus exit the cooling channel via the radial bores and preferably be sprayed against the winding heads of the stator surrounding the rotor. Therefore, the winding heads of the stator can be easily cooled by the cooling medium supplied to the rotor and emitted via the radial holes.
The invention also relates to an electric machine having a rotor according to the invention, wherein at least part of the rotor is surrounded by a stator.
Finally, the invention also includes a motor vehicle having an electric machine according to the invention.
Further features and advantages of the invention will emerge from the dependent claims and the following exemplary embodiments. The exemplary embodiments should not be construed as limiting, but rather as examples. They are intended to enable those skilled in the art to practice the invention. The applicant reserves the right to claim one or more features disclosed in the exemplary embodiment as subject of a patent claim or to include such features in an existing patent claim. Exemplary embodiments will be discussed in more detail with reference to the accompanying drawings.
These figures show:
figure 1 is a longitudinal section through a rotor with an integrated damper according to a first exemplary embodiment of the present invention,
fig. 2 is a longitudinal section through a rotor with an integrated vibration damper according to a first exemplary embodiment, wherein the vibration damper is positioned inside in the radial direction,
fig. 3 is a longitudinal section through a rotor with an integrated vibration damper according to a second exemplary embodiment of the present invention, and fig. 4 is a motor with a rotor according to a second exemplary embodiment of the present invention.
Fig. 1 shows a rotor 10 for an electric machine 11. The rotor 10 has a hollow cylindrical laminated core holder 12. The laminated core carrier 12 may be, for example, a hollow rotor shaft. The laminated core support 12 preferably has an inner diameter >30 mm. The rotor laminated core 14 is disposed on the laminated core support 12. Preferably, the rotor laminated core 14 is rotationally fixedly attached to the laminated core support 12. This means that the rotor laminated core 14 bears at least partially on the outer peripheral surface 16 of the laminated core support 12 and/or is preferably connected to this by friction fit and/or by substance bonding. Thus, the rotational movement and/or torque of the rotor laminated core 14 can be transmitted to the laminated core holder 12.
An end flange 18 is arranged at each axial end of the laminated core carrier 12, wherein each end flange 18 has a journal 20 which is formed coaxially to the rotor axis of rotation 22. The damper 24 is disposed inside the hollow cylindrical laminated core holder 12 or the hollow rotor shaft.
In this way, a rotor 10 with an integrated damper 24 is provided, which may require reduced installation space and have improved operating performance. The production costs can also be reduced while the space-saving construction of the rotor 10 with the integrated damper 24 is achieved.
The shock absorber 24 is a vibratable mass-spring damping system. It is provided here that the damper 24 comprises a rubber-elastic element 26 with at least one absorption mass 28 arranged and/or embedded in the rubber-elastic element 26. The rubber elastic member 26 is a silicone elastomer. The silicone elastomer is adapted and configured for converting vibrational energy into heat. In the present exemplary embodiment, the absorption mass 28 is designed as a metal core. The advantage of a metal core is that it is simple and cheap to manufacture and has a higher density than silicone elastomers.
The absorber masses 28 are held inside the rubber-elastic element 26 in the axial direction of the rotor 10 and in the radial direction of the rotor 10, wherein at least parts of the rubber-elastic element 26 can vibrate in the radial direction as a result of the rotation of the rotor 10 about its rotor rotation axis 22 and the absorber masses 28 vibrate in the radial direction. This means that the absorber masses 28 are positioned inside the rubber-elastic element 26 in the radial direction and in the axial direction inside the laminated core carrier 12. The absorber mass 28 serves as a vibrating mass inside the rubber-elastic element 26, and the rubber-elastic element 26 performs the functions of a spring and a damper. The undesired vibration excitation of the rotor 10 caused by its rotation absorbs the mass 28 to vibrate in the radial direction. Because the absorber mass 28 extracts energy from the excitation vibrations, the vibrations are damped.
The absorber mass 28 is arranged centrally in the longitudinal direction of the laminated core carrier 12, wherein this does not mean that the absorber mass 28 lies on the rotor rotation axis 22. Instead, the absorption mass 28 is arranged spaced apart from the rotor rotation axis 22 in the radial direction. In the present exemplary embodiment, the absorption masses 28 are arranged radially outward.
The absorber mass 28 is bonded to the rubber-elastic element 26 so as to be fixedly or captively connected to the rubber-elastic element 26.
According to a first embodiment, it is provided that the damper 24 has a rectilinear profile in a longitudinal section through the rotor 10. In this way, the damper 24 is arranged coaxially in the laminated core holder 12 and clamped between the end flanges 18. In the radial direction, the damper 24 is spaced apart over its entire length from the inner housing surface 30 of the laminated core support 12, so that the absorber mass 28 can vibrate in the radial direction. The outer diameter of the damper 24 in the region of the absorption mass 28 is at least 5mm smaller than the inner diameter of the laminated core carrier 12.
Fig. 2 shows the rotor 10 known from fig. 1 according to a first exemplary embodiment, wherein the absorption masses 28 are offset inward in the radial direction compared to fig. 1. In this way, the natural frequency of the damper 24 can be adapted. In addition, the natural frequency of the damper 24 can be varied and established by the weight and/or size of the absorber mass 28.
Furthermore, it can be seen that the face flange 18 and the journal 20 have coaxial first bores 32. The damper 24 has a coaxial second bore 34, wherein the first bore 32 and the second bore 34 are connected together to form a continuous cooling passage 36. Thus, a portion of the cooling passage 36 is formed by the damper 24. The cooling channels 36 are configured to direct a cooling medium 38, preferably oil, through the cooling channels 36 for cooling the rotor 10. Accordingly, the rotor 10 that can be easily cooled, and that can have improved operation performance and requires less installation space is provided.
Each journal 20 has at least one radial bore 40 extending up to the axial first bore 32. Thus, the cooling medium 38 may exit the cooling channels 36 via the radial holes 40 and preferably be ejected against winding heads 42 of a stator 44 surrounding the rotor 10. Therefore, the winding head 42 of the stator 44 can be easily cooled by the cooling medium 38 supplied to the rotor 10.
Fig. 3 shows a rotor 10 with an integrated vibration damper 24 according to a second preferred exemplary embodiment. In contrast to the first exemplary embodiment shown in fig. 1 and 2, in the second exemplary embodiment, the damper 24 does not have a straight shape but a dumbbell shape in a longitudinal section through the rotor 10. Thus, the damper 24 has an intermediate portion 48 between the respective end portions 46 that has a reduced outer diameter as compared to the respective end portions 46. The end portion 46 of the damper 24 rests at least partially against the inner housing surface 30 of the laminated core support 12, whereby the damper 24 can be securely positioned in the laminated core support 12. The intermediate portion 48 is configured such that it can vibrate in a radial direction. Thus, the absorption mass 28 is arranged in the middle portion. Furthermore, it is evident that the absorber mass 28 is arranged centrally in the radial direction inside the rubber-elastic element 26. The outer diameter of the damper 24 in the middle portion is smaller than the inner diameter of the laminated core holder 12 by at least 5 mm.
Fig. 4 shows an electric machine 11 with a rotor 10 and an integrated damper 24 according to a second exemplary embodiment. The rotor 10 is mounted inside the housing 50 so as to be rotatable about the rotor rotation axis 22, wherein the rotor 10 is surrounded by the stator 44 in the circumferential direction. The journal 20 of the rotor 10 is coupled to the gearbox input shaft 52 of the gear mechanism 54 such that the rotational movement of the rotor can be transferred to the gear mechanism 54 via the gearbox input shaft 52.
The cooling medium 38 conveyed through the coaxially formed cooling channels 36 is sprayed radially outward by the rotation of the rotor 10 via radial bores 40 in the shaft journal 20 and against a winding head 42 of a stator 44 in order to cool the winding head 42. The bending vibration of the rotor 10 can be effectively reduced by the damper 24 disposed in the laminated core support 12, whereby the operation performance of the motor can be improved. By disposing the damper 24 in the hollow cylindrical laminated core holder 12, the installation space of the motor 11 can be reduced.
Reference numerals
10 rotor
11 electric machine
12 laminated core support
14-rotor laminated core
Peripheral surface of 16 laminated core support
18 end face flange
20 axle journal
22 rotor axis of rotation
24 vibration damper
26 rubber elastic element
28 absorption mass
30 inner shell surface of laminated core support
32 first hole
34 second hole
36 cooling channel
38. Cooling medium
40 radial holes
42 winding head
44 stator
46 end portion
48 middle part
50 casing
52 gearbox input shaft
54 gear mechanism
Claims (11)
1. A rotor (10) for arrangement in an electric machine (11) has
A hollow-cylindrical laminated core carrier (12), on the outer peripheral surface (16) of which a rotor laminated core (14) can be arranged, and at each axial end of which laminated core carrier (12) an end flange (18) is arranged, wherein each end flange (18) has a shaft journal (20), and
a damper (24) is arranged and/or formed in the hollow cylindrical laminated core carrier (12).
2. The rotor as recited in claim 1, characterized in that the damper (24) comprises a rubber-elastic element (26) having at least one absorption mass (28) arranged and/or embedded in the rubber-elastic element (26).
3. The rotor as recited in claim 2, characterized in that the absorption mass (28) is held inside the rubber-elastic element (26) in an axial direction of the rotor (10) and in a radial direction of the rotor (10), wherein at least a part of the rubber-elastic element (26) is capable of vibrating in the radial direction and the absorption mass (28) vibrates in the radial direction as a result of the rotation of the rotor (10) about the rotor rotation axis (22).
4. The rotor as recited in claim 2 or 3, characterized in that the absorption mass (28) is arranged in the rubber-elastic element (26) by means of a substance bond and/or form fit.
5. The rotor as recited in any one of claims 1 to 4, characterized in that the damper (24) has a rectilinear shape in a longitudinal cross-section through the rotor (10).
6. The rotor as recited in any one of claims 1 to 4, characterized in that the damper (24) has a dumbbell shape in a longitudinal cross section through the rotor (10).
7. The rotor as recited in any one of the preceding claims, characterized in that the damper (24) is arranged in the laminated core holder (12) and/or is connected to an inner shell surface (30) of the laminated core holder (12) by means of a mass bond and/or a form fit.
8. The rotor as recited in any one of the preceding claims, characterized in that the end flanges (18) and the journals (20) have coaxial first bores (32) and the damper (24) has coaxial second bores (34), and the first bores (32) and the second bores (34) are connected together to form a continuous cooling channel (36).
9. The rotor as recited in claim 8, characterized in that each journal (20) has at least one radial hole (40) extending up to the axial first hole (32).
10. An electrical machine (11) having a rotor (10) as claimed in any one of the preceding claims.
11. A motor vehicle having an electric machine (11) as claimed in claim 10.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017220422.2 | 2017-11-16 | ||
| DE102017220422.2A DE102017220422A1 (en) | 2017-11-16 | 2017-11-16 | Rotor for an electric machine |
| PCT/EP2018/079554 WO2019096569A1 (en) | 2017-11-16 | 2018-10-29 | Rotor for an electrical machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111448745A true CN111448745A (en) | 2020-07-24 |
| CN111448745B CN111448745B (en) | 2022-07-15 |
Family
ID=64051563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880067783.1A Active CN111448745B (en) | 2017-11-16 | 2018-10-29 | Rotor for an electric machine |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN111448745B (en) |
| DE (1) | DE102017220422A1 (en) |
| WO (1) | WO2019096569A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102020114608A1 (en) | 2020-06-02 | 2021-12-02 | Winkelmann Powertrain Components GmbH & Co. KG. | rotor |
| DE102022119704A1 (en) | 2022-08-05 | 2024-02-08 | Vibracoustic Se | Electric motor rotor assembly |
| DE102022122183A1 (en) * | 2022-09-01 | 2024-03-07 | Bayerische Motoren Werke Aktiengesellschaft | Electric machine |
Citations (15)
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|---|---|---|---|---|
| EP1124058A2 (en) * | 2000-02-09 | 2001-08-16 | Continental ISAD Electronic Systems GmbH & Co. oHG | Drive device with a drive shaft and an electrical machine, e.g. in a vehicle |
| US6312340B1 (en) * | 1997-06-20 | 2001-11-06 | Contitech Formteile Gmbh | Hollow drive shaft with integrated vibration absorber |
| CN1741352A (en) * | 2004-08-25 | 2006-03-01 | 萱场工业株式会社 | Motor and damper using the same |
| JP2008253039A (en) * | 2007-03-30 | 2008-10-16 | Jtekt Corp | Motor and electric power steering device equipped therewith |
| CN201181867Y (en) * | 2008-04-07 | 2009-01-14 | 广东威灵电机制造有限公司 | Permanent-magnet motor rotor |
| JP2009118714A (en) * | 2007-11-09 | 2009-05-28 | Toyota Motor Corp | Rotary electric machine |
| US20100024571A1 (en) * | 2008-07-30 | 2010-02-04 | Horiba Ltd. | Rotational testing system |
| US20100225121A1 (en) * | 2009-02-11 | 2010-09-09 | Converteam Technology Ltd. | Rotating Electrical Machines |
| JP2012042017A (en) * | 2010-08-20 | 2012-03-01 | Tokai Rubber Ind Ltd | Active damper and method of manufacturing the same |
| DE102010062250A1 (en) * | 2010-12-01 | 2012-06-06 | Robert Bosch Gmbh | Rotor for e.g. electromotor used in hybrid drive of hybrid vehicle, has vibration damper that is arranged along the region of rotational axis for damping axial oscillation of rotor |
| WO2012168419A1 (en) * | 2011-06-10 | 2012-12-13 | Carnehammar, Lars Bertil | Method, apparatus and system for reducing vibration in a rotary system of a power generator |
| CN105121898A (en) * | 2012-11-23 | 2015-12-02 | 威格曼汽车有限两合公司 | Counter weight and materials, method for balancing a wheel and method for preparing counter weight materials |
| CN106416011A (en) * | 2014-06-04 | 2017-02-15 | 蒂森克虏伯普利斯坦技术中心股份公司 | Oil distribution element |
| CN106464085A (en) * | 2014-06-04 | 2017-02-22 | 蒂森克虏伯普利斯坦技术中心股份公司 | Media transport in rotor shaft |
| CN108475968A (en) * | 2015-11-30 | 2018-08-31 | 蒂森克虏伯普利斯坦技术中心股份公司 | The hollow rotor shaft of assembling with cooling medium distribution member |
-
2017
- 2017-11-16 DE DE102017220422.2A patent/DE102017220422A1/en active Pending
-
2018
- 2018-10-29 WO PCT/EP2018/079554 patent/WO2019096569A1/en active Application Filing
- 2018-10-29 CN CN201880067783.1A patent/CN111448745B/en active Active
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| JP2012042017A (en) * | 2010-08-20 | 2012-03-01 | Tokai Rubber Ind Ltd | Active damper and method of manufacturing the same |
| DE102010062250A1 (en) * | 2010-12-01 | 2012-06-06 | Robert Bosch Gmbh | Rotor for e.g. electromotor used in hybrid drive of hybrid vehicle, has vibration damper that is arranged along the region of rotational axis for damping axial oscillation of rotor |
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| CN105121898A (en) * | 2012-11-23 | 2015-12-02 | 威格曼汽车有限两合公司 | Counter weight and materials, method for balancing a wheel and method for preparing counter weight materials |
| CN106416011A (en) * | 2014-06-04 | 2017-02-15 | 蒂森克虏伯普利斯坦技术中心股份公司 | Oil distribution element |
| CN106464085A (en) * | 2014-06-04 | 2017-02-22 | 蒂森克虏伯普利斯坦技术中心股份公司 | Media transport in rotor shaft |
| CN108475968A (en) * | 2015-11-30 | 2018-08-31 | 蒂森克虏伯普利斯坦技术中心股份公司 | The hollow rotor shaft of assembling with cooling medium distribution member |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111448745B (en) | 2022-07-15 |
| WO2019096569A1 (en) | 2019-05-23 |
| DE102017220422A1 (en) | 2019-05-16 |
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