CN213637267U - In-wheel motor, wheel and electric motor car - Google Patents
In-wheel motor, wheel and electric motor car Download PDFInfo
- Publication number
- CN213637267U CN213637267U CN202022393927.XU CN202022393927U CN213637267U CN 213637267 U CN213637267 U CN 213637267U CN 202022393927 U CN202022393927 U CN 202022393927U CN 213637267 U CN213637267 U CN 213637267U
- Authority
- CN
- China
- Prior art keywords
- motor shaft
- outlet
- motor
- cavity section
- wheel
- 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.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Landscapes
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
The utility model provides an in-wheel motor, wheel and electric motor car, in-wheel motor are the single winding motor, and the single winding motor includes stator assembly, rotor assembly and motor shaft, and the stator assembly includes stator core and stator winding, and the stator winding includes first lead-out wire and second lead-out wire, and stator core installs on the motor shaft, and the motor shaft has first end and second end, and first lead-out wire is qualified for the next round of competitions in first end department, and the second lead-out wire is qualified for the next round of competitions in second end department. The utility model provides an in-wheel motor has complete machine weight little, is applicable to the high advantage of heavy current operating mode work and motor shaft intensity.
Description
Technical Field
The utility model relates to the technical field of electric machines, specifically, relate to an in-wheel motor, wheel and electric motor car.
Background
At present, small-size high-rotating-speed hub motors in the market are limited by the working voltage of a battery, three-phase lead-out phase lines of the motors are very thick, most of the hub motors of electric vehicles in the related art are drilled at the single shaft end of the motors, and lead-out wires formed by the lead-out phase lines are led out from shaft holes. Since the outgoing lines formed by all the outgoing phase lines are thick, the motor shaft needs to have a sufficiently large outer diameter so that the diameter of the shaft hole is sufficiently large. However, the whole weight of the hub motor is heavy, the model selection pressure of the high-speed bearing is high, and the shoulder step degree amplitude of the end part of the motor shaft is large, so that the local stress concentration at the shoulder is caused, and the strength of the motor shaft is reduced. On the other hand, if the diameter of the lead-out phase line is reduced due to the size limitation of the shaft hole, the hub motor can generate heat seriously under the heavy-current working condition, and the service life of the hub motor is influenced.
SUMMERY OF THE UTILITY MODEL
The present invention aims at solving at least one of the technical problems in the related art to a certain extent.
Therefore, the embodiment of an aspect of the utility model provides an in-wheel motor, this in-wheel motor have complete machine weight little, be applicable to the advantage that heavy current operating mode work and motor shaft intensity are high.
An embodiment of another aspect of the present invention further provides a wheel.
The embodiment of another aspect of the present invention further provides an electric vehicle.
According to the utility model discloses in-wheel motor is single winding motor, single winding motor includes stator assembly, rotor assembly and motor shaft, stator assembly includes stator core and stator winding, stator winding includes first lead-out wire and second lead-out wire; the stator core is mounted on the motor shaft, the motor shaft has a first end and a second end, the first outgoing line is outgoing at the first end, and the second outgoing line is outgoing at the second end.
According to the utility model discloses in-wheel motor includes first lead-out wire and second lead-out wire through setting up stator winding, compares in stator winding and only includes an lead-out wire, and the cross-sectional area of first lead-out wire and second lead-out wire this moment is littleer. At this time, the first outgoing line and the second outgoing line are respectively extended from the first end and the second end of the motor shaft, instead of extending both the first outgoing line and the second outgoing line from the first end or the second end of the motor shaft.
Therefore, when the motor shaft needs to guide the first outgoing line and the second outgoing line, the cross section area of a channel used for guiding the first outgoing line and the second outgoing line in the motor shaft cannot be too large, and then the outer diameter of each position of the motor shaft can be designed to be smaller, so that the weight of the motor shaft is reduced, and the whole weight of the hub motor is further reduced. And at this moment, the step amplitude of the shaft shoulder of the motor shaft is smaller, namely the difference value of the outer diameters of the shaft shoulder is smaller, so that the local stress concentration of the shaft shoulder is avoided, and the strength of the motor shaft is ensured. In addition, the diameter of the lead-out phase line forming the first lead-out wire and the second lead-out wire does not need to be reduced while the outer diameter of the motor shaft does not need to be increased, normal work of the hub motor under a high-current working condition is guaranteed, and the service life of the hub motor is guaranteed.
In some embodiments, a first outlet hole and a second outlet hole are provided in the motor shaft, the first outlet hole has a first inlet and a first outlet, the first inlet is located on the outer circumferential surface of the motor shaft, the first outlet is located on the first end of the motor shaft, the second outlet hole has a second inlet and a second outlet, the second inlet is located on the outer circumferential surface of the motor shaft, the second outlet is located on the second end of the motor shaft, the first outlet wire enters the first outlet hole from the first inlet and extends out of the first outlet hole through the first outlet, and the second outlet wire enters the second outlet hole from the second inlet and extends out of the second outlet hole through the second outlet.
In some embodiments, the stator winding includes six outgoing phase lines, three of the six outgoing phase lines form the first outgoing line in combination, the remaining three of the six outgoing phase lines form the second outgoing line in combination, and the cross-sectional area of the first outlet hole is equal to the cross-sectional area of the second outlet hole.
In some embodiments, the first and second outlet holes are spaced apart in an axial direction of the motor shaft.
In some embodiments, the first inlet is located at a first side of the stator core, the second inlet is located at a second side of the stator core, and the first side and the second side are opposite in an axial direction of the motor shaft.
In some embodiments, the first outlet is located on an end face of the first end and the second outlet is located on an end face of the second end.
In some embodiments, the first outlet hole comprises a first cavity section and a second cavity section, one end of the first cavity section forms the first inlet, the other end of the first cavity section is connected with one end of the second cavity section, the other end of the second cavity section forms the first outlet, and the axis of the second cavity section is coincident with the axis of the motor shaft; the second wire outlet hole comprises a third cavity section and a fourth cavity section, one end of the third cavity section forms the second inlet, the other end of the third cavity section is connected with one end of the fourth cavity section, the other end of the fourth cavity section forms the second outlet, and the axis of the fourth cavity section is coincident with the axis of the motor shaft.
In some embodiments, the angle between the axis of the first cavity section and the axis of the second cavity section is an obtuse angle, and the angle between the axis of the third cavity section and the axis of the fourth cavity section is an obtuse angle.
In some embodiments, the rotor assembly includes a hub shell and a hub end cap, the hub shell is connected to the hub end cap, a first bearing is disposed in the hub shell, a second bearing is disposed in the hub end cap, the motor shaft is fitted in the first bearing and the second bearing, a first end of the motor shaft extends from a side of the hub shell facing away from the hub end cap, and a second end of the motor shaft extends from a side of the hub end cap facing away from the hub shell.
In some embodiments, the rotor assembly further includes a steel ring fitted within the hub shell, a magnetic steel holder fitted within the steel ring, and magnetic steel coupled to the magnetic steel holder, the magnetic steel and the stator core being spaced apart radially of the stator core.
In some embodiments, the in-wheel motor further comprises a snap ring, the motor shaft is provided with a positioning shoulder, the stator core is matched with the motor shaft, the snap ring is connected with the motor shaft and abuts against a first side of the stator core, and the positioning shoulder abuts against a second side of the stator core.
An electric vehicle according to an embodiment of the second aspect of the present invention includes the wheel according to any of the above embodiments.
An electric vehicle according to an embodiment of the third aspect of the present invention includes the wheel according to the above embodiment.
Drawings
Fig. 1 is a cross-sectional view of an in-wheel motor according to an embodiment of the present invention.
Fig. 2 is a schematic view of an in-wheel motor according to an embodiment of the present invention.
Fig. 3 is another schematic view of an in-wheel motor according to an embodiment of the present invention.
Fig. 4 is a cross-sectional view of a motor shaft in an in-wheel motor according to an embodiment of the present invention.
Reference numerals:
the in-wheel motor 100 is provided with a motor,
the stator assembly comprises a stator assembly 1, a stator core 101, a stator winding 102, a first outgoing line 1021, a second outgoing line 1022, a motor shaft 2, a first outlet 201, a first inlet 2011, a first outlet 2012, a first cavity section 2013, a second cavity section 2014, a second outlet 202, a second inlet 2021, a second outlet 2022, a third cavity section 2023, a fourth cavity section 2024, a positioning shaft shoulder 203, a first end 204, a second end 205, a hub shell 3, a left cavity 301, a right cavity 302, a hub end cover 4, a rotor assembly 5, a steel ring 501, a steel magnet retainer 502, a steel magnet 503, a first bearing 6, a second bearing 7 and a clamping ring 8.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
An in-wheel motor 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 4.
As shown in fig. 1-4, an in-wheel motor 100 according to an embodiment of the present invention is a single-winding motor, which includes a stator assembly 1, a rotor assembly 5 and a motor shaft 2. The stator assembly 1 includes a stator core 101 and a stator winding 102, and the stator winding 102 includes a first lead wire 1021 and a second lead wire 1022.
The stator core 101 is mounted on a motor shaft 2, the motor shaft 2 having a first end 204 and a second end 205, the first lead wire 1021 being out at the first end 204 and the second lead wire 1022 being out at the second end 205.
As shown in fig. 1, the first end 204 is the left end of the motor shaft 2, and the second end 205 is the right end of the motor shaft 2. Both the first end 204 and the second end 205 are exposed outside the in-wheel motor 100. The first lead 1021 extends from the first end 204 to the outside of the hub motor 100, and the second lead 1022 extends from the second end 205 to the outside of the hub motor 100.
According to the embodiment of the present invention, the in-wheel motor 100 includes the first lead wire 1021 and the second lead wire 1022 through the stator winding 102, and the cross-sectional area of the first lead wire 1021 and the second lead wire 1022 is smaller than the case where the stator winding 102 includes only one lead wire. At this time, the first lead wires 1021 and the second lead wires 1022 respectively protrude from the first end 204 and the second end 205 of the motor shaft 2, instead of protruding both the first lead wires 1021 and the second lead wires 1022 from the first end 204 or the second end 205 of the motor shaft 2.
Therefore, when the motor shaft 2 needs to guide the first lead-out wire 1021 and the second lead-out wire 1022, the cross-sectional area of the passage for guiding the first lead-out wire 1021 and the second lead-out wire 1022 in the motor shaft 2 is not too large, and the outer diameter of each position of the motor shaft 2 can be designed to be smaller, so that the weight of the motor shaft 2 is reduced, and the overall weight of the in-wheel motor 100 is reduced. And at this moment, the step amplitude of the shaft shoulder of the motor shaft 2 is smaller, namely the difference value of the outer diameters of the shaft shoulder is smaller, so that the local stress concentration at the shaft shoulder is avoided, and the strength of the motor shaft 2 is ensured. In addition, the diameter of the lead-out phase lines forming the first lead-out line 1021 and the second lead-out line 1022 does not need to be reduced while the outer diameter of the motor shaft 2 does not need to be increased, so that the normal work of the in-wheel motor 100 under a high-current working condition is ensured, and the service life of the in-wheel motor 100 is further ensured.
It should be noted that, the single-winding motor refers to a single-winding structure, that is, only one set of winding is provided, and the set of winding can realize the switching between star connection and angular connection by leading out six outgoing lines. Alternatively, the winding may be connected to form a non-switchable star connection or angle connection by only tapping out three outgoing lines. The double-winding motor is a double-winding structure, namely, the double-winding motor is provided with two sets of three-phase symmetrical windings, the in-phase windings of the two sets of windings are connected in series, and then the two sets of windings are led out in a star connection mode. The double winding structure of the double winding machine may be as follows: the first set of windings is a double-lap winding with unequal turns, the turn ratio is 1: 2, each phase has 8 turns, the turn ratio of each phase is 1 and has 2 turns, the turn ratio of each phase is 2 and has 6 turns, and the turn ratio of each phase is 3 and 24 turns. The second set of windings is a single-layer winding with equal turns, the turn ratio is 1, each phase has 2 turns, 3 phases have 6 turns, the two sets of windings have strict position relation, and the span moment of all the coils is 2.
For convenience of understanding, arrow a in fig. 1 indicates the left-right direction of in-wheel motor 100, and arrow B in fig. 1 indicates the up-down direction of in-wheel motor 100.
In some embodiments, motor shaft 2 has a first wire outlet 201 and a second wire outlet 202. First outlet hole 201 has a first inlet 2011 and a first outlet 2012, first inlet 2011 is located on the outer peripheral surface of motor shaft 2, and first outlet 2012 is located on first end 204 of motor shaft 2. Second outlet hole 202 has a second inlet 2021 and a second outlet 2022, with second inlet 2021 being located on the outer peripheral surface of motor shaft 2 and second outlet 2022 being located on second end 205 of motor shaft 2.
As shown in fig. 1, the first inlet 2011 and the second inlet 2021 are both located within the in-wheel motor 100.
The first lead 1021 enters the first outlet hole 201 from the first inlet 2011 and extends out of the first outlet hole 201 through the first outlet 2012. The second outgoing line 1022 enters the second outlet hole 202 from the second inlet 2021 and extends out of the second outlet hole 202 through the second outlet 2022. As shown in fig. 1, the cross-sectional shape of the first lead wire 1021 matches the cross-sectional shape of the first outlet hole 201, and the cross-sectional shape of the second lead wire 1022 matches the cross-sectional shape of the second outlet hole 202. The first lead wire 1021 extends out of the hub motor 100 through the first lead hole 201, and the second lead wire 1022 extends out of the hub motor 100 through the second lead hole 202.
According to the utility model discloses in-wheel motor 100, because the cross-sectional area of first lead-out wire 1021 and second lead-out wire 1022 is littleer, and then the cross-sectional area that is used for supplying the first wire-out hole 201 that first lead-out wire 1021 passed and is used for supplying the second wire-out hole 202 that second lead-out wire 1022 passed is littleer. The cross-sectional area of the axial hole at the first end 204 is the cross-sectional area of the first outlet 201, and the cross-sectional area of the axial hole at the second end 205 is the cross-sectional area of the second outlet 202.
Therefore, the outer diameters of the positions of the motor shaft 2 can be designed to be smaller, so that the weight of the motor shaft 2 is reduced, and the overall weight of the in-wheel motor 100 is further reduced. Moreover, the step amplitude of the shaft shoulder of the motor shaft 2 is smaller, namely the difference value of the outer diameter of the shaft shoulder is smaller, so that the local stress concentration of the shaft shoulder is avoided, and the strength of the motor shaft 2 is ensured. In addition, the diameter of the lead-out phase lines forming the first lead-out line 1021 and the second lead-out line 1022 does not need to be reduced while the outer diameter of the motor shaft 2 does not need to be increased, so that the normal work of the in-wheel motor 100 under a high-current working condition is ensured, and the service life of the in-wheel motor 100 is further ensured.
In some embodiments, the stator winding 102 includes six outgoing phase lines, three of which combine to form the first outgoing line 1021, and the remaining three of which combine to form the second outgoing line 1022. The cross-sectional area of the first outlet hole 201 is equal to the cross-sectional area of the second outlet hole 202.
As shown in fig. 1, six outgoing phase lines simultaneously extend from the left side of the stator winding 102, any three of the six outgoing phase lines are combined to form a first outgoing line 1021, and the remaining three of the six outgoing phase lines are combined to form a second outgoing line 1022. The cross-sectional area of the first lead line 1021 and the cross-sectional area of the second lead line 1022 are substantially the same, and the cross-sectional area of the first outlet hole 201 is substantially equal to the cross-sectional area of the second outlet hole 202.
Therefore, on the basis of ensuring the strength of motor shaft 2, the outer diameter of motor shaft 2 at the position where first outlet hole 201 is separately provided and the outer diameter of motor shaft 2 at the position where second outlet hole 202 is separately provided can be designed smaller, so as to further reduce the weight of motor shaft 2. Moreover, the outer diameter of the position of the motor shaft 2 where the first wire outlet hole 201 is separately arranged is substantially the same as the outer diameter of the position of the motor shaft 2 where the second wire outlet hole 202 is separately arranged, so that a shaft shoulder with a large step amplitude cannot be generated, and the strength of the motor shaft 2 is ensured.
In some embodiments, first and second outlet holes 201 and 202 are spaced apart in the axial direction of motor shaft 2. As shown in fig. 4, the first inlet 2011 and the second inlet 2021 are spaced apart in the axial direction of the motor shaft 2, and the first inlet 2011 is located on the left side of the second inlet 2021. Therefore, the first wire outlet hole 201 and the second wire outlet hole 202 cannot be overlapped in the radial direction of the motor shaft 2, and the outer diameter of the motor shaft 2 cannot be increased at the overlapped position to meet the strength of the motor shaft 2, so that the weight of the motor shaft 2 is further reduced, and the overall weight of the in-wheel motor 100 is further reduced.
In some embodiments, the first inlet 2011 is located on a first side of the stator core 101, and the second inlet 2021 is located on a second side of the stator core 101, the first and second sides being opposite in the axial direction of the motor shaft 2. As shown in fig. 1 and 4, the stator core 101 divides the inner cavity of the in-wheel motor 100 into a left chamber 301 and a right chamber 302, and the left chamber 301 and the right chamber 302 are communicated through stator slots (lightening holes) of the stator core 101. At this time, the first lead lines 1021 and the second lead lines 1022 of the stator winding 102 are both protruded from the left chamber 301. The first inlet 2011 is located on the left side of the stator core 101, the second inlet 2021 is located on the right side of the stator core 101, the first outgoing line 1021 directly extends into the first outlet hole 201 from the first inlet 2011, and the second outgoing line 1022 passes through the stator slot (weight reduction hole) and then enters the right chamber 302, and then extends into the second outlet hole 202 from the second inlet 2021.
Therefore, the lengths of the first wire outlet hole 201 and the second wire outlet hole 202 are shorter, the motor shaft 2 is more convenient to process, the part of the motor shaft 2 connected with the stator core 101 is of a solid structure, and the strength of the connection part of the motor shaft 2 and the stator core 101 is higher.
In some embodiments, the first outlet 2012 is located on an end face of the first end 204 and the second outlet 2022 is located on an end face of the second end 205. As shown in fig. 1 and 4, the first outlet 2012 is located on the left end surface of the motor shaft 2, and the second outlet 2022 is located on the right end surface of the motor shaft 2. Therefore, the first lead-out wires 1021 extending through the first outlet 2012 and the second lead-out wires 1022 extending through the second outlet 2022 can be better connected with the electric elements outside the in-wheel motor 100. Furthermore, when the motor shaft 2 is connected to a mechanical mechanism (e.g., a frame of an electric vehicle) outside the in-wheel motor 100 through the outer peripheral surface of the first end 204 and the outer peripheral surface of the second end 205, interference between the first lead wire 1021 and the second lead wire 1022 and the mechanical mechanism is effectively avoided.
In some embodiments, the first outlet aperture 201 includes a first section 2013 and a second section 2014, with one end of the first section 2013 defining a first inlet 2011. The other end of the first section 2013 is connected to one end of the second section 2014, the other end of the second section 2014 forms a first outlet 2012, and the axis of the second section 2014 coincides with the axis of the motor shaft 2. The second outlet hole 202 includes a third cavity section 2023 and a fourth cavity section 2024, and an end of the third cavity section 2023 forms a second inlet 2021. The other end of the third chamber section 2023 is connected to one end of a fourth chamber section 2024, the other end of the fourth chamber section 2024 forms a second outlet 2022, and the axis of the fourth chamber section 2024 coincides with the axis of the motor shaft 2. As shown in fig. 1 and 4, the first chamber section 2013, the second chamber section 2014, the third chamber section 2023 and the fourth chamber section 2024 are all cylindrical, and the first inlet 2011 and the second inlet 2021 are both disposed upward to face the first lead-out line 1021 and the second lead-out line 1022. The first section 2013 and the second section 2014 are smoothly connected, and the third section 2023 and the fourth section 2024 are smoothly connected.
Therefore, the first outgoing line 1021 can extend out of the first outgoing line hole 201 through the first outlet 2012 only by bending once in the first outgoing line hole 201, and the second outgoing line 1022 can extend out of the second outgoing line hole 202 through the second outlet 2022 only by bending once in the second outgoing line hole 202, so that the assembly of the in-wheel motor 100 is convenient.
In some embodiments, the angle between the axis of the first section 2013 and the axis of the second section 2014 is obtuse and the angle between the axis of the third section 2023 and the axis of the fourth section 2024 is obtuse. Therefore, the first lead wire 1021 and the second lead wire 1022 can easily penetrate through the first wire outlet hole 201 and the second wire outlet hole 202, and the assembling efficiency of the in-wheel motor 100 is improved.
In some embodiments, the rotor assembly 5 includes a hub shell 3 and a hub end cover 4, and the hub shell 3 is connected to the hub end cover 4. A first bearing 6 is arranged in the hub shell 3, and a second bearing 7 is arranged in the hub end cover 4. The axis of the first bearing 6 and the axis of the second bearing 7 coincide, the motor shaft 2 fits inside the first bearing 6 and the second bearing 7, the first end 204 of the motor shaft 2 extends from the side of the hub shell 3 facing away from the hub cover 4, and the second end 205 of the motor shaft 2 extends from the side of the hub cover 4 facing away from the hub shell 3.
As shown in fig. 1 to 3, an opening is formed in the right side of the hub shell 3, and the hub cover 4 is bolted to the hub shell 3 to close the opening. The first bearing 6 and the second bearing 7 are spaced apart in the left-right direction, the motor shaft 2 is interference-fitted with the first bearing 6, and the first end 204 is located on the left side of the first bearing 6. The motor shaft 2 is interference fitted with the second bearing 7, and the second end 205 is located on the right side of the second bearing 7.
In some embodiments, rotor assembly 5 further includes steel ring 501, steel magnet retainer 502, and steel magnets 503, steel ring 501 fitting within hub shell 3, steel magnet retainer 502 fitting within steel ring 501, steel magnets 503 connected to steel magnet retainer 502, steel magnets 503 spaced radially from stator core 101 with respect to stator core 101. As shown in fig. 1, the inner cavity of the hub shell 3 is cylindrical, the axial direction of the inner cavity is the left-right direction, the steel ring 501 is inserted into the inner cavity, the magnetic steel retainer 502 is inserted into the steel ring 501, the magnetic steel 503 is embedded on the magnetic steel retainer 502, and the connection between the magnetic steel 503 and the magnetic steel retainer 502 is realized through glue. In some embodiments, the in-wheel motor 100 further comprises a retaining ring 8, the motor shaft 2 is provided with a positioning shoulder 203, the stator core 101 is matched with the motor shaft 2, the retaining ring 8 is connected with the motor shaft 2 and abuts against a first side of the stator core 101, and the positioning shoulder 203 abuts against a second side of the stator core 101. As shown in fig. 1, the positioning shoulder 203 is located in the right chamber 302, the stator core 101 is connected with the motor shaft 2 in a key manner, the right side of the stator core 101 abuts against the positioning shoulder 203, and the snap ring 8 is installed on the motor shaft 2 and abuts against the left side of the stator core 101, thereby realizing the installation of the stator core 101 on the motor shaft 2.
An in-wheel motor 100 according to a specific example of an embodiment of the present invention is described below with reference to fig. 1 to 4.
As shown in fig. 1 to 4, an in-wheel motor 100 according to an embodiment of the present invention includes a stator assembly 1, a rotor assembly 5, and a motor shaft 2.
The stator assembly 1 includes a stator core 101 and a stator winding 102, the stator winding 102 has six outgoing phase lines, three outgoing phase lines of the six outgoing phase lines are combined to form a first outgoing line 1021, and the other three outgoing phase lines of the six outgoing phase lines are combined to form the second outgoing line 1022.
An electric vehicle according to an embodiment of the second aspect of the present invention includes the wheel according to any of the above embodiments.
According to the utility model discloses the technical advantage that wheel has is the same with the technical advantage of above-mentioned in-wheel motor 100, and it is no longer repeated here.
An electric vehicle according to an embodiment of the third aspect of the present invention includes the wheel according to the above embodiment.
According to the utility model discloses the technical advantage that electric motor car has is the same with the technical advantage of above-mentioned wheel, and it is no longer repeated here.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (13)
1. An in-wheel motor, characterized in that, in-wheel motor is single winding motor, single winding motor includes:
the stator assembly comprises a stator core and a stator winding, and the stator winding comprises a first outgoing line and a second outgoing line;
a rotor assembly; and
the motor shaft, the stator core is installed on the motor shaft, the motor shaft has first end and second end, first lead-out wire is qualified for the next round of competitions at first end department, the second lead-out wire is qualified for the next round of competitions at second end department.
2. The in-wheel motor of claim 1, wherein a first outlet hole and a second outlet hole are provided in the motor shaft, the first outlet hole has a first inlet and a first outlet, the first inlet is located on the outer peripheral surface of the motor shaft, the first outlet is located on the first end of the motor shaft, the second outlet hole has a second inlet and a second outlet, the second inlet is located on the outer peripheral surface of the motor shaft, the second outlet is located on the second end of the motor shaft, the first outlet wire enters the first outlet hole from the first inlet and extends out of the first outlet hole through the first outlet, and the second outlet wire enters the second outlet hole from the second inlet and extends out of the second outlet hole through the second outlet.
3. The in-wheel motor according to claim 2, wherein the stator winding comprises six outgoing phase lines, three of the six outgoing phase lines form the first outgoing line in combination, the remaining three of the six outgoing phase lines form the second outgoing line in combination, and the cross-sectional area of the first outlet hole is equal to the cross-sectional area of the second outlet hole.
4. The in-wheel motor of claim 2, wherein the first and second outlet holes are spaced apart in an axial direction of the motor shaft.
5. The in-wheel motor of claim 4, wherein the first inlet is located on a first side of the stator core and the second inlet is located on a second side of the stator core, the first and second sides being opposite in an axial direction of the motor shaft.
6. The in-wheel motor of claim 2, wherein the first outlet is located on an end face of the first end and the second outlet is located on an end face of the second end.
7. The in-wheel motor of claim 2, wherein the first outlet hole comprises a first cavity section and a second cavity section, one end of the first cavity section forms the first inlet, the other end of the first cavity section is connected with one end of the second cavity section, the other end of the second cavity section forms the first outlet, and the axis of the second cavity section is coincident with the axis of the motor shaft; the second wire outlet hole comprises a third cavity section and a fourth cavity section, one end of the third cavity section forms the second inlet, the other end of the third cavity section is connected with one end of the fourth cavity section, the other end of the fourth cavity section forms the second outlet, and the axis of the fourth cavity section is coincident with the axis of the motor shaft.
8. The in-wheel motor of claim 7, wherein the angle between the axis of the first cavity section and the axis of the second cavity section is an obtuse angle, and the angle between the axis of the third cavity section and the axis of the fourth cavity section is an obtuse angle.
9. The in-wheel motor according to any one of claims 1-8, wherein the rotor assembly comprises a hub shell and a hub end cover, the hub shell is connected with the hub end cover, a first bearing is arranged in the hub shell, a second bearing is arranged in the hub end cover, the motor shaft is fitted in the first bearing and the second bearing, a first end of the motor shaft extends from one side of the hub shell, which is far away from the hub end cover, and a second end of the motor shaft extends from one side of the hub end cover, which is far away from the hub shell.
10. The in-wheel motor of claim 9, wherein the rotor assembly further comprises a steel ring, a magnetic steel holder, and magnetic steel, the steel ring being fitted within the hub shell, the magnetic steel holder being fitted within the steel ring, the magnetic steel being connected to the magnetic steel holder, the magnetic steel being spaced from the stator core in a radial direction of the stator core.
11. The in-wheel motor of claim 9, further comprising a snap ring, wherein the motor shaft is provided with a positioning shoulder, the stator core is engaged with the motor shaft, the snap ring is connected with the motor shaft and abuts against a first side of the stator core, and the positioning shoulder abuts against a second side of the stator core.
12. A wheel comprising an in-wheel motor according to any of claims 1-11.
13. An electric vehicle comprising the wheel of claim 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022393927.XU CN213637267U (en) | 2020-10-23 | 2020-10-23 | In-wheel motor, wheel and electric motor car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022393927.XU CN213637267U (en) | 2020-10-23 | 2020-10-23 | In-wheel motor, wheel and electric motor car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213637267U true CN213637267U (en) | 2021-07-06 |
Family
ID=76623004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022393927.XU Active CN213637267U (en) | 2020-10-23 | 2020-10-23 | In-wheel motor, wheel and electric motor car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213637267U (en) |
-
2020
- 2020-10-23 CN CN202022393927.XU patent/CN213637267U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101855763B1 (en) | Wrsm motor | |
| US9479020B2 (en) | Electric machine with stator's welded-side pitch less that rotor's pitch | |
| US20140184011A1 (en) | Stator for Rotating Electrical Machine and Rotating Electrical Machine | |
| US20120025642A1 (en) | Rotating electric machine | |
| US20080018193A1 (en) | Terminal for Rotating Armature | |
| US20020047473A1 (en) | Stator for an electrical rotating machine | |
| CN103154514A (en) | A compressor for a vehicle | |
| JP4332128B2 (en) | Motor stator structure | |
| EP2619456B1 (en) | Electric motor-driven compressor for vehicle | |
| CN101416370A (en) | Stator for a polyphase electrical machine, and method for its production | |
| CN102077446B (en) | Electric machine | |
| JP5911034B1 (en) | Rotating electric machine stator | |
| CN103918163B (en) | Rotary electric machine for vehicles | |
| CN104335457A (en) | Stator system for an electric motor | |
| CN102132472A (en) | Electric machine | |
| CN113452179B (en) | Stator and motor | |
| JP2010514406A (en) | Stator for multi-phase rotating electrical machine, multi-phase rotating electrical machine having the stator, and method for manufacturing the stator | |
| US7291948B2 (en) | Alternator with a cooling fan rotated with a rotor | |
| CN213637267U (en) | In-wheel motor, wheel and electric motor car | |
| CN210007489U (en) | Piece together iron core, stator, motor and hauler | |
| EP3979468A1 (en) | Dynamo-electrical machine | |
| JP2008312324A (en) | Cooling structure for stator | |
| KR20200100030A (en) | Electric medium gap machine, and compressor and/or turbine | |
| US20160111931A1 (en) | Rotary machine | |
| CN110168865B (en) | Wound stator for rotating electric machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220105 Address after: 100192 a101b, 1 / F, building B-2, Dongsheng Science Park, Zhongguancun, 66 xixiaokou Road, Haidian District, Beijing Patentee after: Beijing zero Innovation Technology Co.,Ltd. Address before: 100192 301c, 3 / F, C-2 building, Zhongguancun Dongsheng Science Park, 66 xixiaokou Road, Haidian District, Beijing Patentee before: Beijing 66 Interactive Technology Co.,Ltd. |