CN117879220A - Electronically commutated electric motor in the form of an external rotor structure - Google Patents

Electronically commutated electric motor in the form of an external rotor structure Download PDF

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Publication number
CN117879220A
CN117879220A CN202311309012.8A CN202311309012A CN117879220A CN 117879220 A CN117879220 A CN 117879220A CN 202311309012 A CN202311309012 A CN 202311309012A CN 117879220 A CN117879220 A CN 117879220A
Authority
CN
China
Prior art keywords
current
electric motor
section
current conductors
hollow shaft
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
CN202311309012.8A
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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 CN117879220A publication Critical patent/CN117879220A/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
    • H02K21/222—Flywheel magnetos
    • 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
    • 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
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • H02K1/187—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to inner stators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—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
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/03—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the relationship between the connecting locations
    • H01R11/09—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the relationship between the connecting locations the connecting locations being identical
    • 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

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)
  • Windings For Motors And Generators (AREA)

Abstract

The invention relates to an electronically commutated electric motor (10) in the form of an external rotor structure, comprising a stator (14) which is arranged on a hub (12) in a stationary manner and has an electric coil (20) which is in at least indirect electrical contact with current conductors (31; 31a;31b;31c;31d to 33;33a;33b;33c;33 d), and comprising a rotor (24) which is arranged radially around the stator (14) and is rotatable about an axis (18) of the hub (12), wherein the rotor (24) has a magnetic element (26) which interacts with the coil (20), wherein the hub (12) is designed as a hollow shaft (28) in whose inner cross section (29) current conductors (31; 31a;31b;31c;31d to 33a;33b;33c;33 d) are arranged, wherein the hub (12) has at least one opening (46; 36) for electrical connection between the current conductors (31; 31a;31b;31 c;33 a;33b;33 d) and the coil (20).

Description

Electronically commutated electric motor in the form of an external rotor structure
Technical Field
The invention relates to an electronically commutated electric motor in the form of an external rotor structure, which is distinguished in that its electric coils are advantageously electrically contacted and in that a relatively large cross section using current conductors guided in a hub can be achieved. Such electric motors can for example be component parts of a hub drive in an electric scooter or be used in the field of small engines, in particular for motor vehicle applications.
Background
DE 10201310208228 A1 discloses an electronically commutated electric motor in the form of an external rotor design, which is used in the form of a hub drive in a two-wheeled vehicle, in particular an electric scooter. The known electric motor is characterized by a stator which is fastened in a rotationally fixed manner to the hub. The stator carries, in a known manner, an electric coil, which is constituted by winding wires. No more detailed description is given in the cited document of the contact or connection of the winding wire or the electrical coil with the current lines for actuating or energizing the coil.
Disclosure of Invention
The electronically commutated electric motor in the form of an external rotor structure according to the invention having the features of claim 1 has the advantage that it can advantageously contact its electrical coils with current lines for actuating or energizing the coils. In particular, despite maximizing the cross section of the current conductor, the current conductor can be contacted relatively easily in the direction of the electrical coil by means of at least one opening formed in the hub or hollow shaft. As a result, rigid or semi-rigid current conductors can be used, which are relatively difficult to deform, and if the current conductor has to be guided radially to the outside of the at least one opening of the hollow shaft, it is particularly not possible to bend the current conductor easily with a narrow radius, as is required. The available (inner) cross section of the hollow shaft can thus also be used in order to achieve a high filling degree of the cross section and thus a cross section of the current conductor that is as large as possible. This reduces the electrical losses and, in addition, makes it possible, when using a rigid current conductor, to conduct the current conductor up to the region of the at least one opening in the hollow shaft, in which region an electrical connection to the electrical coil is achieved (usually by means of an intermediate element or connecting element).
In the context of the above explanation, an electronically commutated electric motor in the form of an external rotor structure therefore comprises a stator which is arranged in a stationary manner on a hub and has an electric coil which is in at least indirect electrical contact with a current conductor and a rotor which is arranged radially around the stator and rotatably about the axis of the hub, wherein the rotor has a magnetic element which interacts with the coil, wherein the hub is configured as a hollow shaft in the cross section of which the current conductor is arranged, wherein the hub has at least one opening for the formation of an electrical connection between the current conductor and the coil, and wherein the current conductor is either configured as a rigid current conductor in the region of the hub and is in contact with a separate connecting element which can be introduced into the at least one opening from outside the hollow shaft,
or the current conductor is connected on the side facing the at least one opening to a separate deformable connecting element, which can be guided radially outwards from the hollow shaft through the at least one opening,
the current conductor is either configured as a rigid current conductor, which has a contact section arranged on the side facing the at least one opening, which contact section can be guided radially outwards through the at least one opening.
According to the invention, three different structural embodiments are therefore proposed, which allow at least indirect contact with the electrical coil while avoiding flexible current conductors.
Advantageous developments of an electronically commutated electric motor in the form of an external rotor structure are listed in the dependent claims.
In order to reduce the electrical losses, it is particularly preferred that three current conductors (for forming the electric motor electric phase) are provided, the cross section of which is adapted to the (inner-) cross section of the hollow shaft in such a way that the current conductors at least almost fill the (inner-) cross section of the hollow shaft and are contacted by means of separate connecting elements through at least one opening of the hollow shaft. The current conductor preferably has a cross section which, as a whole, in the case of the assembled current conductor at least almost fills the cross section of the opening of the hollow shaft, as a result of which a particularly high filling of the cross section of the hollow shaft is obtained. Furthermore, a relatively easy contact of the current conductor from the outside of the hub can be achieved by means of a separate connecting element, wherein the current conductor can be pushed into the (inner-) cross section of the hollow shaft in the axial direction.
In a preferred embodiment of such a cross section of the current conductor, a first variant provides that the cross section of the current conductor is configured in the form of a (respectively) circular segment.
As an alternative to the circular-arc segment-shaped cross section of the current conductor, it is also possible for the cross section of the current conductor to be configured flat at least on the sides facing one another, so that the current conductors are arranged one above the other in the cross section of the hollow shaft. Such an arrangement enables, in particular, the following possibilities to be achieved, namely: the contact of the current conductors is achieved by the end sections of the current conductors being arranged offset relative to one another in the axial direction, via only a single opening in the hollow shaft. In order to increase the filling level of the cross section of the hollow shaft, it can be provided that the cross section of the current conductors in the region where they do not abut against each other is adapted to the (inner-) cross section of the hollow shaft, or that they abut against the inner wall of the hollow shaft.
The preferred connection between the connecting element and the current conductor is realized by means of a threaded connection. Such a threaded connection can be realized, for example, in one proposed development by: the threaded connection includes a nut separate from the current conductor, the nut being connected to the current conductor. In an alternative embodiment, the threaded connection can be formed directly in the current line by means of a corresponding threaded section, i.e. the current line is connected directly to the connecting element.
Alternatively, the connection to the current conductor can also be realized by a connecting element in the form of a deformable semi-rigid cable lug which penetrates the at least one opening, wherein the cable lug is connected to the end-side end region of the current conductor.
Such a connection between the cable lug and the current conductor can be embodied in particular in the form of a crimped connection, which is distinguished in that no additional auxiliary material is required, but only a mechanical deformation process for making the electrical contact is required.
Since the cross section of the hollow shaft as explained above is preferably filled to a high extent, preferably as nearly as possible, by the cross section of the current conductor, the cross section of the current conductor typically does not have a rectangular shape or cross section. For this purpose, a preferred production variant of the current conductor is provided, which is designed as an extruded component, in particular consisting of aluminum.
In a further alternative embodiment, which gives up the highest possible filling of the cross section of the hollow shaft by the current wires, but nevertheless enables a relatively easy assembly of the current wires in the hub, three rigid current wires are provided, the cross section of which preferably is rectangular and which generally fills only partially the cross section of the hollow shaft or hub, and in which the end sections of the current wires facing the at least one opening are formed in a curved manner as contact sections. In particular, such a solution makes it possible to push three current conductors into the cross section of the hollow shaft in the axial direction one after the other and then to fix and seal the current conductors in the cross section of the hollow shaft, for example by means of a molded element made of plastic.
In particular, if the current conductors, as described above, almost completely fill the cross section of the hollow shaft, the current conductors are designed as insulated current conductors in order to avoid electrical shorts between the current conductors. Such insulation can be realized, for example, by a coating process or else by separate elements fitted across the cross section of the electrical conductor.
The invention further relates to a hub drive for a vehicle, in particular an electric scooter, having an electric motor of the type described above.
Drawings
Further advantages, features and specific details of the invention result from the following description of preferred embodiments of the invention and from the drawing.
Figure 1 shows a perspective view in partial section of an electronically commutated electric motor in the form of an external rotor structure,
figure 2 shows a longitudinal section through the current supply of the electric motor in the region of the hollow shaft in a first embodiment of the current conductor,
figure 3 shows a cross section in the region of the hollow shaft in a second embodiment using a rigid current conductor,
fig. 4 shows a cross section in the region of the hollow shaft in the case of a threaded section embodied in the current conductor for contacting the current conductor,
figure 5 shows a view of the contact portions of three rigid current conductors in the case of using separate threaded nuts,
figure 6 shows an alternative embodiment and arrangement of the rigid current conductor in the hollow shaft,
figure 7 shows a plan view of the arrangement of the current conductors according to figure 6 in the region of the opening of the hollow shaft,
fig. 8 shows a structural component of three pre-deformed rigid current conductors with centering rings in perspective view, and
fig. 9 shows the structural component shown in fig. 8 in a longitudinal section in the assembled state within the hollow shaft.
The same elements or elements having the same function are provided with the same reference numerals in the figures.
Detailed Description
Fig. 1 shows a simplified illustration of an electronically commutated electric motor 10 in the form of an external rotor structure. The electric motor 10 is used, for example, but not by way of limitation, as a hub drive in a vehicle, particularly an electric scooter. Alternatively, and again without limitation, use in particular in the automotive field can be envisaged.
The electric motor 10 has a hub 12, on which a stator 14 is fastened, which stator is arranged in a stationary manner with respect to the hub 12. The stator 14 has a stator body 16 with a plurality of electrical coils 20 arranged at uniform angular spacing around the axis 18 in a radial spacing from the axis 18 of the hub 12. The electrical coils 20 are coupled by means of a circuit arrangement 22 in order to construct three electrical phases of the electric motor 10.
The stator 14 is surrounded radially by a rotor 24 rotatably mounted on the hub 12, which rotor has, in a known manner and in a known manner, on the side facing the coil 20, at relatively small distances around the axis 18, seen in the circumferential direction, magnetic elements 26 which interact with the coil 20 when it is energized, in order to provide a drive torque for the electric motor 10.
Hub 12 is configured as a hollow shaft 28 having a circular inner cross section 29. Within the inner cross section 29 of the hollow shaft 28, three current conductors 31, 32, 33 are arranged or guided for contacting the electrical phase of the electric motor 10 or of the coil 20, which in the first embodiment according to fig. 2 are formed by preferably rigid or also semi-rigid conductors having a circular cross section, which have an outer insulation 27. The uninsulated end sections of the current conductors 31, 32, 33 are connected to separate connecting elements 38, wherein each of the connecting elements 38 is configured, for example, in the form of a semi-rigid cable connector (Kabelschuhe) 39, which is connected to the circuit arrangement 22 at a first end region and to the uninsulated end sections of the respective current conductors 31 to 33 at a further end region. The connection between the cable lug 39 and the current conductors 31 to 33 is preferably realized by means of a crimp connection 42, respectively. The cable lugs 39 each penetrate the openings 36 of the hub 12 with sections arranged obliquely to the axis 18, wherein the (three) openings are each arranged around the axis 18 with a 120 ° offset in the circumferential direction.
In the exemplary embodiment shown in fig. 3, the three current lines 31a, 32a and 33a are each formed as rigid current lines 31a to 33a. Each of the current conductors 31a to 33a is configured, in cross section, as seen in the circumferential direction about the axis 18, to enclose an arc segment of approximately 120 °, such that the cross section of the three current conductors 31a to 33a overall at least approximately fills the cross section of the hollow shaft 28. The current conductors 31a to 33a likewise have an electrical insulation 35 at their outer circumference in order to prevent an electrical short between the individual current conductors 31a to 33a. The current conductors 31a to 33a can advantageously be embodied as extruded components in the cross-sectional shape shown and consist of aluminum. The circuit arrangement 22 or the coil 20 is contacted by means of separate connecting elements, which are not shown. For this purpose, the connecting element can be screwed at least indirectly from the outside of the hub 12 into a threaded section 41 according to fig. 4, which is formed at an axial end section of the current lines 31a to 33a and which is aligned with the opening 36a in the hub 12.
Fig. 5 shows a modified embodiment in which the current lines 31b to 33b each have a rectangular cross section. On the sides facing the axis 18, threaded nuts 44 are provided, which are connected to the current conductors 31b to 33 b. In addition, the current wires 31b to 33b have through holes 45 in alignment with the threaded holes of the threaded nuts 44.
Fig. 6 and 7 show a further modified embodiment with current lines 31c to 33c, which are each configured as at least partially planar current lines 31c to 33c in such a way that they can be stacked on top of one another in the inner cross section 29 of the hollow shaft 28. In other words, this means that the sides of the respective current lines 31c to 33c facing each other are each configured flat. It is also recognized that hollow shaft 28 has only a single opening 46, in the region of which the axial end sections of current conductors 31c to 33c end offset relative to one another when viewed in the axial direction relative to axis 18. In particular, the current conductors 31c to 33c can again have a threaded section 41 (or threaded nut 44) which enables the current conductors 31c to 33c to be connected to the circuit arrangement 22 by a threaded connection at a connection element which is not shown.
Finally, fig. 8 and 9 show an embodiment in which the three current conductors 31d to 33d each have a rectangular cross section and are formed as a curved component consisting of strips. On the side facing the three openings 36 of the hollow shaft 28, the current conductors 31d to 33d have, as contact sections, end sections 48 which are bent by 90 ° relative to the axis 18 and are insulated, which end sections are so long that, according to the illustration of fig. 9, the end sections 48 protrude from the region of the hollow shaft 28 with the current conductors 31d to 33d fitted in the cross section of the hollow shaft 28. It is also recognized that the three current conductors 31d to 33d are positioned and fixed relative to one another on the side facing away from the end section 48 by means of a molded part 50, which is made of plastic and carries a seal 52. The assembly of the individual current conductors 31d to 33d is carried out gradually by first axially pushing the respective current conductor 31d to 33d into the cross section of the hollow shaft 28 with a subsequent radial movement in order to remove the end section 48 from the hollow shaft 28 via the opening 36, and finally, according to fig. 9, the three current conductors 31d to 33d are connected to the molding 50.
The electric motor 10 described so far can be altered or modified in various ways and manners without departing from the inventive concept.

Claims (13)

1. An electronically commutated electric motor (10) in the form of an external rotor structure, comprising:
a stator (14) arranged in a stationary manner on the hub (12), having an electrical coil (20) which is in at least indirect electrical contact with the current conductors (31; 31a;31b;31c;31d to 33;33a;33b;33c;33 d); and
a mover (24) radially surrounding the stator (14) and rotatably arranged around the axis (18) of the hub (12),
wherein the mover (24) has a magnetic element (26) which interacts with the coil (20), wherein the hub (12) is designed as a hollow shaft (28) in whose inner cross section (29) current lines (31; 31a;31b;31c;31d to 33;33a;33b;33c;33 d) are arranged, wherein the hub (12) has at least one opening (36; 36a; 46) for forming an electrical connection between the current lines (31; 31a;31b;31c;31d to 33;33a;33b;33c;33 d) and the coil (20), and wherein the current lines (31; 31a;31b;31c;31d to 33a;33b;33c;33 d) are designed either as rigid current lines (31 a;31b;31c to 33a;33b;33 c) and are connected to at least one opening (36 a;33 c) which can be introduced from the outside of the hollow shaft (28) and can be separated,
or the current lines (31 to 33) are connected on the side facing the at least one opening (36) to a separate deformable connecting element (38) which can be guided radially outwards from the hollow shaft (28) relative to the axis (18) via the at least one opening (36),
or the current lines (31 d to 33 d) are embodied as rigid current lines (31 d to 33 d) having end sections (48) arranged on the side facing the at least one opening (36), which end sections can be guided radially outwards relative to the axis (18) via the at least one opening (36).
2. The electric motor according to claim 1,
it is characterized in that the method comprises the steps of,
three current conductors (31 a;31c to 33a;33 c) are provided, the cross sections of which are adapted to the inner cross section (29) of the hollow shaft (28) in such a way that the current conductors (31 a;31c to 33a;33 c) at least almost fill the inner cross section (29) of the hollow shaft (28) and contact the current conductors (31 a;31c to 33a;33 c) by means of separate rigid connecting elements through at least one opening (36) of the hollow shaft (28).
3. The electric motor according to claim 2,
it is characterized in that the method comprises the steps of,
the current lines (31 a to 33 a) are of circular-arc-segment-shaped cross-section.
4. The electric motor according to claim 2,
it is characterized in that the method comprises the steps of,
the cross sections of the current conductors (31 c to 33 c) are configured flat at least on the sides facing each other, so that the current conductors (31 c to 33 c) are arranged one above the other in the inner cross section (29) of the hollow shaft (28).
5. The electric motor according to any one of claim 2 to 4,
it is characterized in that the method comprises the steps of,
the connecting element is connected to the current line (31 a;31b;31c to 33a;33b;33 c) by means of a threaded connection.
6. The electric motor according to claim 5,
it is characterized in that the method comprises the steps of,
the threaded connection of the current conductors (31 b to 33 b) has a separate threaded nut (44) which is connected to the current conductors (31 b to 33 b).
7. The electric motor according to claim 5,
it is characterized in that the method comprises the steps of,
the threaded connection has a threaded section (41) embodied in the current line (31 a;33c to 33a;33 c).
8. The electric motor according to claim 1,
it is characterized in that the method comprises the steps of,
the connecting element (38) is embodied in the form of a deformable semi-rigid cable lug (39) which extends through the at least one opening (36), wherein the cable lug (39) is connected to the end regions of the end sides of the current conductors (31 to 33).
9. The electric motor according to claim 8,
it is characterized in that the method comprises the steps of,
the connection between the cable lug (38) and the current conductors (31 to 33) is in each case realized by a crimp connection (42).
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 current wires (31 a;31c to 33a;33 c) are made of aluminum as extrusion members.
11. The electric motor according to claim 1,
it is characterized in that the method comprises the steps of,
three rigid current conductors (31 d to 33 d) are provided, the preferably rectangular cross section of which overall only partially fills the inner cross section (29) of the hub (28), and wherein the end sections (48) of the current conductors (31 d to 33 d) facing the at least one opening (36) are configured in a curved manner as contact sections.
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 current conductors (31; 31a;31b;31c;31d to 33;33a;33b;33c;33 d) are configured as insulated current conductors (31; 31a;31b;31c;31d to 33;33a;33b;33c;33 d).
13. Hub drive for a vehicle, in particular an electric scooter, having an electric motor (10) constructed according to any one of claims 1 to 12.
CN202311309012.8A 2022-10-11 2023-10-10 Electronically commutated electric motor in the form of an external rotor structure Pending CN117879220A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022210699.7 2022-10-11
DE102022210699.7A DE102022210699A1 (en) 2022-10-11 2022-10-11 Electronically commutated electric motor in external rotor design

Publications (1)

Publication Number Publication Date
CN117879220A true CN117879220A (en) 2024-04-12

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Application Number Title Priority Date Filing Date
CN202311309012.8A Pending CN117879220A (en) 2022-10-11 2023-10-10 Electronically commutated electric motor in the form of an external rotor structure

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Country Link
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DE (1) DE102022210699A1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013208226B4 (en) 2013-05-06 2024-01-25 Robert Bosch Gmbh Cooling element for a wheel hub drive and wheel hub drive
CN206471939U (en) 2016-12-29 2017-09-05 杭州畅动智能科技有限公司 Body-sensing slide plate vehicle motor
TWI800990B (en) 2021-11-18 2023-05-01 財團法人工業技術研究院 Stator, motor including the same and stator assembling method

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