CN117879217A - Electric motor having an external rotor structure and hub drive for a vehicle - Google Patents

Electric motor having an external rotor structure and hub drive for a vehicle Download PDF

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Publication number
CN117879217A
CN117879217A CN202311309558.3A CN202311309558A CN117879217A CN 117879217 A CN117879217 A CN 117879217A CN 202311309558 A CN202311309558 A CN 202311309558A CN 117879217 A CN117879217 A CN 117879217A
Authority
CN
China
Prior art keywords
electric motor
hub
stator
method comprises
steps
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.)
Pending
Application number
CN202311309558.3A
Other languages
Chinese (zh)
Inventor
M·梅尔
P·马穆施金
P·莱珀特
F·福斯特
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of CN117879217A publication Critical patent/CN117879217A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/22—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/28—Layout of windings or of connections between windings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • B60B27/0047—Hubs characterised by functional integration of other elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • B60B27/02—Hubs adapted to be rotatably arranged on axle
    • B60B27/04—Hubs adapted to be rotatably arranged on axle housing driving means, e.g. sprockets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K7/0007—Disposition of motor in, or adjacent to, traction wheel the motor being electric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
    • B62M6/40—Rider propelled cycles with auxiliary electric motor
    • 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
    • H02K1/2786—Outer rotors
    • H02K1/2787—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/2789—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2791—Surface mounted magnets; Inset magnets
    • 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
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/52—Fastening salient pole windings or connections thereto
    • H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
    • H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
    • 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
    • H02K7/006—Structural association of a motor or generator with the drive train of a motor vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • B60B27/06—Hubs adapted to be fixed on axle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K2007/0092—Disposition of motor in, or adjacent to, traction wheel the motor axle being coaxial to the wheel axle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/10—Road Vehicles
    • B60Y2200/12—Motorcycles, Trikes; Quads; Scooters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/90—Vehicles comprising electric prime movers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
    • B62M6/40—Rider propelled cycles with auxiliary electric motor
    • B62M6/60—Rider propelled cycles with auxiliary electric motor power-driven at axle parts
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
    • H02K2203/09—Machines characterised by wiring elements other than wires, e.g. bus rings, for connecting the winding terminations
    • 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)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)

Abstract

The invention relates to an electric motor (12) designed in the form of an external rotor structure, comprising a stator (15) arranged on a hub (14), comprising at least one stator wire (21 to 23), wherein the at least one stator wire (21 to 23) forms an electric coil (28) in the circumferential direction about an axis (17) of the hub (14), wherein the coil (28) is arranged at a first radial distance (R) relative to the axis (17) and is coupled to one another for forming an electric phase (U, V, W) of the electric motor (12), and comprising a rotor (30) having a magnetic element (32), which radially surrounds the electric coil (28) and is rotatably mounted on the hub (14).

Description

Electric motor having an external rotor structure and hub drive for a vehicle
Technical Field
The invention relates to an electric motor in the form of an external rotor structure, which is distinguished by a particularly high effective power during advantageous processing. This can be achieved by optimizing the cooling by means of advantageously arranging and designing the coupling of the coils of the stator of the electric motor. The invention further relates to a hub drive for a vehicle with an electric motor constructed according to the invention.
Background
An electric motor having the features of the preamble of claim 1, which is designed as a component of a wheel hub drive for a two-wheeled vehicle, and which is constructed in the form of an external rotor structure is known from DE 10 2013 208 226 A1. The known electric motor has a stator arranged on the hub, which stator has an electric coil. The coil is formed by a stator wire and cooperates with a rotor rotatably arranged around the hub, which rotor has a plurality of magnetic elements, viewed in a circumferential direction around the axis of the hub, in a known manner.
Disclosure of Invention
The electric motor according to the invention in the form of an external rotor structure with the features of claim 1 has the advantage that the coupling of the individual electrical phases is achieved in an advantageous manner by means of the connection unit. The connection unit offers the following possibilities: the electrical coils or phases are formed by means of individual or continuous stator wires, and at the same time at least one stator wire is guided between the coils and the connection unit in such a way that the stator can be advantageously (in air) flowed through and thus cooled. This results in more points in the region of the coil for effective cooling of the coil, so that the maximum available power of the electric motor during operation is positively influenced, since the coil can be flown through with a relatively large current, which correspondingly results in a strong magnetic field and thus a high power. Furthermore, the phase coupling is achieved in a particularly robust manner, which requires relatively low (additional) material outlay.
In the context of the above explanation, the electric motor according to the invention in the form of an outer rotor structure having the features of claim 1 therefore has the feature that the coupling of the electrical phases is achieved by means of a connection unit having a plurality of connection elements, wherein the connection elements are arranged at a radial distance from the axis of the hub, which is smaller than the radial distance of the coils, and the connection elements are arranged at receiving elements having guide elements, in particular arranged in a star-like manner, for arranging at least one stator wire between the coils and the connection elements.
Advantageous developments of the electric motor according to the invention in the form of an outer rotor structure are specified in the dependent claims.
In order to be able to achieve particularly effective cooling of the coil, it is advantageous if the connection unit and the connection element are arranged as close to the hub as possible, or if an intermediate space is formed between the coil and the connection unit as large as possible. A preferred geometry is thus provided, namely: the connection elements of the connection unit are located at an average pitch of less than 30% of the radial pitch of the coils with respect to the axis of the hub.
In order to cool the coil effectively, it is also advantageous if the guide element for at least one stator wire is arranged in the region of the stator carrier and the stator carrier has spokes for arranging the guide element, wherein a through-gap for the air to flow through is formed between the spokes.
In a preferred embodiment of the connecting element and the receiving element, it is provided that the connecting element is configured as a flat stamping/bending made of sheet metal, that the connecting element is configured in the form of a circular segment and is arranged in a first recess of the receiving element, wherein at least the coupling region for the at least one stator wire protrudes from the first recess, and that the guide element has a groove-shaped second recess for receiving the at least one stator wire. Such a design makes it possible in an advantageous manner to easily fasten and fix not only the connecting element in the receiving element, but also at least one stator wire in the region between the coil and the connecting element.
In a preferred constructional refinement of the last proposed proposal, it is provided that the at least one stator wire is fixedly received in the second recess of the guide element by a clamping fit. No additional fastening or element for fastening the at least one stator wire in the guide element is thereby required.
The receiving element is preferably constructed as a plastic injection molding. The first recess and the second recess mentioned can thus be produced in a particularly easy and advantageous manner, wherein the receiving element has a relatively low weight and electrical insulation properties at the same time, in order to electrically separate the connecting elements arranged in the receiving element from one another in particular.
An increased robustness of the arrangement of the at least one stator wire in the receiving element can be achieved by: at least one stator wire is connected to the connecting element on the side facing the guiding element near the coil by a traction force eliminating section having two curved sections.
Preferably, it is provided that the traction force eliminating section is arranged perpendicular to a plane extending perpendicularly with respect to the axis of the hub.
The fastening of the at least one stator wire at the coupling region of the connecting element can be achieved in different ways. The following embodiments are preferred, wherein the coupling region has a clamping cutting element (klemmschneiideelemente) or a welding fork element for fastening the at least one stator wire.
It is furthermore preferred that the connecting elements are arranged at different radial distances with respect to the axis. This enables the use of a total of only four connecting elements for coupling three electrical phases from at least one stator wire.
A further structurally preferred embodiment provides that the receiving element (composed of plastic) is connected to the stator carrier in a form-fitting manner.
The connection element is preferably connected to the electrical conductor with respect to the control unit or the electrical connection to the current supply, wherein the electrical conductor protrudes from the connection element toward the hub (and is guided within the hub).
The invention further relates to a hub drive for a vehicle, in particular for an electric scooter, having an electric motor constructed according to the invention.
Drawings
Further advantages, features and specific details of the invention result from the following description of a preferred embodiment of the invention and from the drawing. Wherein:
fig. 1 shows an electric motor, which is configured as a component of a hub drive for a vehicle, in a perspective, partially cut-away view, in addition to a main component of the vehicle, and
fig. 2 shows a partial view of fig. 1 in an enlarged perspective view for explaining the guidance of the stator wire and its coupling in the region of the connecting element.
Detailed Description
The same elements or elements having the same function are provided with the same reference numerals in the figures.
Fig. 1 shows the main components of a hub drive 10 for a vehicle, in particular for an electric scooter. The hub drive 10 has an electronically commutated electric motor 12 in the form of an external rotor structure, which comprises a stator 15 connected in a rotationally fixed manner to a hub 14. The stator 15 has a stator carrier 16, which is in particular formed as an aluminum die cast part, with spokes 18 which protrude radially outwards at uniform angular distances around an axis 17 of the hub 14, with through-gaps 13 between the spokes for air to flow through. The spoke ring 19, which in turn is surrounded by a ring-shaped winding carrier 20, is connected to the spokes 18, viewed radially outwards. The winding carrier 20 and the spoke ring 19 can be formed either integrally or monolithically with the stator carrier 16 or as separate components.
In the region of the winding carrier 20, a plurality of windings 25 to 27, which are formed from at least one stator wire 21 to 23 and each form an electrical coil 28, are arranged. The respective three windings 25, 26 or 27 or coils 28, which are connected next to one another as seen in the circumferential direction about the axis 17, are each connected in series and form the phase U, V or W of the electrical circuit of the electric motor 12.
The stator 15 is surrounded radially by a rotor 30 which is rotatably arranged around the hub 14 and which has a plurality of (permanent-) magnetic elements 32 which are arranged in the rotor 30 in a known manner and which cooperate with the coil 28 when the phase U, V, W of the coil 28 is energized in order to provide a driving torque to the driving wheels of the vehicle. For this purpose, the rotor 30 of the hub drive 10 is connected, for example, to the rim of the drive wheel, as is known per se.
The electrical coupling of the at least one stator wire 21 to 23 or coil 28 to the stator 15 is achieved by means of a connection unit 45, which has a receiving element 35, which is preferably embodied as a plastic injection molding. The receiving element 35 has an annular central region 36, from which a radially outwardly projecting strip-shaped guide element 38 begins. The guide elements 38 have a groove-shaped recess for example for a positive-locking or clamping-locking connection with the spokes 18 of the stator carrier 16, so that the guide elements 38 of the receiving element 35 can be placed on or connected to the spokes 18 axially parallel to the axis 17, as can be seen particularly clearly in fig. 2.
In the central region 36 of the receiving element 35, a groove-shaped first recess 39 is formed, which serves to receive four connecting elements 41 to 44, which are likewise constituent parts of a connecting unit 45. The four connecting elements 41 to 44 are each formed as flat stamping/bending elements made of sheet metal and are inserted into the first recess 39 by form-fitting or clamping fit, or are glued into the first recess. The three connecting elements 41 to 43 are each used for the phases U, V and W of the coupling structure of the electric motor 12 and each comprise, for example, a rotational angle range of approximately 300 °, whereas the fourth connecting element 44, which radially surrounds the connecting elements 41 to 43, has a rotational angle range of, for example, 350 ° about the axis 17.
The connecting elements 41 to 44, which are embodied in the form of circular-arc segments, furthermore have coupling areas 46 for the at least one stator wire 21 to 23, which in the exemplary embodiment shown are embodied in the form of clamping cutting elements 47. However, instead of clamping the cutting element 47, the coupling element 46 can also be configured, for example, as a welded fork element (not shown), wherein the coupling element 46 protrudes from the first recess 39 of the receiving element 35.
Furthermore, the coupling element 46 is oriented with the guide element 38. The guide element 38 has second recesses 48, 49 for guiding at least one stator wire 21 to 23. In particular, the groove-shaped second recess 48, 49 is adapted to the size or diameter of the at least one stator wire 21 to 23 in such a way that the at least one stator wire 21 to 23 is positioned or held in the second recess 48, 49 by a form fit or a clamping fit.
Three phases U, V, W are formed by connecting or connecting at least one stator line 21 to 23 to the connecting elements 41 to 43, which phases are electrically connected to a control unit, not shown, via electrical conductors 51 to 53. The electrical conductors 51 to 53 are connected as (planar) electrical conductors 51 to 53 with the respective connection elements 41 to 43. The electrical conductors 51 to 53 are guided in the hub 14 embodied as a hollow shaft, for example, from the region of the stator 15 in the direction of the axis 17, by means of recesses 54 embodied in the hub 14.
The four connecting elements 41 to 44 of the connecting unit 45, which are arranged at different radial distances with respect to the axis 17, are spaced apart from the axis 17 by an average radial distance R, which is typically less than 30% of the average radial distance R at which the coils 28 are arranged. In other words, this means that the coupling of the at least one stator line 21 to 23 to the connecting elements 41 to 44 takes place at a radially inner region of the stator 15 or at a relatively large distance from the coil 28.
In the embodiment of the electric motor 12 shown in the figures, the respective three coils 28 following one another are coupled in series, as seen in the circumferential direction about the axis 17. The regions of at least one stator wire 21 to 23 of the respective third coil 28, which in fig. 2 constitute the outgoing wires 56, are coupled in a star shape by the connecting element 44. The outgoing lines 56 are guided radially inwards by the respective guide element 38 and contact the connecting element 44, then contact the immediately following connecting element 41 to 43 of the respective phase U, V, W, and then are guided radially outwards again in the next wire guide in the guide element 38 in order to wind the next three coils 28, so that a single stator wire 21 to 23 is sufficient for a complete connection or connection.
As can also be seen from fig. 2, at least one stator line 21 to 23 is not guided in a straight line or in a shortest path from the region of the guide element 38 to the region of the coil 28, but rather via a traction force elimination section 58 arranged in the vicinity of the coil 28, which is connected to the respective coil 28 or to the connecting element 41 to 44 via two bending sections 59, 60. The traction force relief section 58 here extends perpendicularly to a plane extending perpendicularly relative to the axis 17 of the hub 14.
The hub drive device 10 described thus far can be altered or modified in various ways and manners without departing from the inventive concept. This consists in electrically coupling the individual phases U, V, W of the electric motor 12 or of the coil 28 by means of the connection unit 45, preferably in the region near the hub, and in bridging the radial region between the coil 28 and the connection unit 45 receiving the connection elements 41 to 44 by means of the guide element 38 for guiding the at least one stator wire 21 to 23. In particular, the invention should not be limited to hub drives 10 for vehicles, but can in principle be applied to all electric motors 12 which are configured in other rotor designs.

Claims (13)

1. An electric motor (12) which is designed in the form of an external rotor structure and has a stator (15) which is arranged on a hub (14) and has at least one stator wire (21 to 23), wherein the at least one stator wire (21 to 23) forms an electric coil (28) in the circumferential direction about an axis (17) of the hub (14), wherein the coil (28) is arranged at a first radial distance (R) relative to the axis (17) and is coupled to one another for the design of an electric phase (U, V, W) of the electric motor (12), and has a rotor (30) which has a magnetic element (32) and which radially surrounds the electric coil (28) and is rotatably mounted on the hub (14),
it is characterized in that the method comprises the steps of,
the coupling of the phases (U, V, W) is achieved by means of a connection unit (45) having a plurality of connection elements (41 to 44), wherein the connection elements (41 to 44) are arranged at a second average radial distance (R) from the axis (17) of the hub (14), which is smaller than the first radial distance (R) of the coils (28), and the connection elements (41 to 44) are arranged at a receiving element (35) having guide elements (38), in particular arranged in a star shape, for arranging the at least one stator wire (21 to 23) between the coils (28) and the connection elements (41 to 44).
2. The electric motor according to claim 1,
it is characterized in that the method comprises the steps of,
the second average radial spacing (R) is less than 30% of the first radial spacing (R).
3. An electric motor according to claim 1 or 2,
it is characterized in that the method comprises the steps of,
the guide elements (38) are arranged in the region of the stator carrier (16), and the stator carrier (16) has spokes (18) along which the guide elements (38) are arranged in the radial direction, wherein a through-gap (13) for the air to flow through is formed between the spokes (18) in the axial direction, wherein in particular the guide elements (38) have an axial recess in which the at least one stator wire (21 to 23) extends in the radial direction.
4. An electric motor according to any one of claims 1 to 3,
it is characterized in that the method comprises the steps of,
the connecting elements (41 to 44) are designed as flat stamping/bending parts made of sheet metal, the connecting elements (41 to 44) are designed in the form of circular segments and are arranged in first recesses (39) of the receiving element (35), wherein at least the coupling regions (46) of the connecting elements (41 to 44) for the at least one stator wire (21 to 23) protrude from the first recesses (39), and the guide element (38) has groove-shaped second recesses (48, 49) for receiving the at least one stator wire (21 to 23).
5. The electric motor according to claim 4,
it is characterized in that the method comprises the steps of,
the at least one stator wire (21 to 23) is fixedly received in a second recess (48, 49) of the guide element (38) by a clamping fit.
6. The electric motor according to any one of claims 1 to 5,
it is characterized in that the method comprises the steps of,
the receiving element (35) is designed as a plastic injection piece.
7. The electric motor according to any one of claims 1 to 6,
it is characterized in that the method comprises the steps of,
the at least one stator wire (21 to 23) has a traction force elimination section (58) between the guide element (38) and the coil (28), which traction force elimination section has two curved sections (59, 60).
8. The electric motor according to claim 7,
it is characterized in that the method comprises the steps of,
the traction force eliminating section (58) is arranged perpendicular to a plane extending perpendicularly with respect to an axis (17) of the hub (14).
9. The electric motor according to any one of claims 4 to 8,
it is characterized in that the method comprises the steps of,
the coupling region (46) has a clamping cutting element (47) or a welding fork element for fastening the at least one stator wire (21 to 23).
10. The electric motor according to any one of claims 1 to 9,
it is characterized in that the method comprises the steps of,
the connecting elements (41 to 44) are arranged at different radial distances in the region of the second average radial distance (r).
11. The electric motor according to any one of claims 1 to 10,
it is characterized in that the method comprises the steps of,
the receiving element (35) is connected to the stator carrier (16) in a positive-locking manner.
12. The electric motor according to any one of claims 1 to 11,
it is characterized in that the method comprises the steps of,
the connection elements (41 to 44) are connected to electrical conductors (51 to 53) which protrude from the connection elements (41 to 43) toward the hub (14) and are guided partially within the hub (14).
13. Hub drive (10) for a vehicle, in particular for an electric scooter, having an electric motor (12) configured according to any one of claims 1 to 12.
CN202311309558.3A 2022-10-11 2023-10-10 Electric motor having an external rotor structure and hub drive for a vehicle Pending CN117879217A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022210701.2 2022-10-11
DE102022210701.2A DE102022210701A1 (en) 2022-10-11 2022-10-11 External rotor electric motor and wheel hub drive for a vehicle

Publications (1)

Publication Number Publication Date
CN117879217A true CN117879217A (en) 2024-04-12

Family

ID=90355315

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311309558.3A Pending CN117879217A (en) 2022-10-11 2023-10-10 Electric motor having an external rotor structure and hub drive for a vehicle

Country Status (2)

Country Link
CN (1) CN117879217A (en)
DE (1) DE102022210701A1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011120413A (en) 2009-12-07 2011-06-16 Nippon Densan Corp Motor
DE102012023477A1 (en) 2012-11-28 2014-05-28 Ziehl-Abegg Se Shift element for electromotor has base having outer rim and/or edge of passage opening designed as sealing edge
DE102013208226B4 (en) 2013-05-06 2024-01-25 Robert Bosch Gmbh Cooling element for a wheel hub drive and wheel hub drive
KR101604915B1 (en) 2014-08-04 2016-03-21 뉴모텍(주) Motor with Bus-bar Assembly
FR3083024B1 (en) 2018-06-26 2022-04-22 Valeo Equip Electr Moteur INTERCONNECTION DEVICE FOR A ROTATING ELECTRIC MACHINE INTENDED FOR A MOTOR VEHICLE

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