WO2012011765A2 - 전기자동차용 전기모터 - Google Patents

전기자동차용 전기모터 Download PDF

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Publication number
WO2012011765A2
WO2012011765A2 PCT/KR2011/005409 KR2011005409W WO2012011765A2 WO 2012011765 A2 WO2012011765 A2 WO 2012011765A2 KR 2011005409 W KR2011005409 W KR 2011005409W WO 2012011765 A2 WO2012011765 A2 WO 2012011765A2
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WO
WIPO (PCT)
Prior art keywords
rim
rotor
fixed shaft
electric motor
coupled
Prior art date
Application number
PCT/KR2011/005409
Other languages
English (en)
French (fr)
Korean (ko)
Other versions
WO2012011765A3 (ko
Inventor
박계정
Original Assignee
Park Gye-Jeung
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 Park Gye-Jeung filed Critical Park Gye-Jeung
Priority to JP2013520673A priority Critical patent/JP5988052B2/ja
Priority to CN201180033137.1A priority patent/CN102986118B/zh
Publication of WO2012011765A2 publication Critical patent/WO2012011765A2/ko
Publication of WO2012011765A3 publication Critical patent/WO2012011765A3/ko

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • H02K5/225—Terminal boxes or connection arrangements
    • 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
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
    • 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
    • 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

Definitions

  • the present invention relates to an electric motor mainly used in electric vehicles, etc. More specifically, the electric wire drawn into the housing of the electric motor is drawn through the wire inlet hole of the fixed shaft coupling portion is fixed to surround the fixed shaft, not the fixed shaft In this way, a separate through hole is not formed in the fixed shaft to maintain the high strength without increasing the diameter of the fixed shaft, and the wire drawn out from the end of the wire entry hole is protected by the support.
  • the rim can be fixed to the housing by a simple and easy operation by combining the rim fixing the wheels by using the first and second rim side coupling portions which press the rim to press the rim to engage the side of the rim.
  • the first and second rim side coupling portions and the rims are coupled to the rotor using bolts that penetrate through the side coupling portions and are coupled to the first rim side coupling portions so that they can be combined and fixed without welding, thereby deforming the rims due to welding operations. It relates to an electric motor for an electric vehicle that can prevent.
  • Electric vehicles using electric motors are attracting attention due to the adverse effects of air pollution and the depletion of fossil fuels.
  • hybrid cars or even electric motors, which use the engine as the main power source and the electric motor as the auxiliary power source, are attracting attention.
  • electric vehicles using the bay as a main power source have been developed and commercialized, the utilization of electric motors is increasing.
  • FIG. 1 is a reference diagram illustrating a structure in which a wire is drawn through a through hole of a fixed shaft in a conventional electric motor
  • FIG. 2 is a reference diagram illustrating a coupling structure of a fixed shaft and a support in a conventional electric motor
  • FIG. In the conventional electric motor is a reference diagram showing a coupling structure of the housing and the rim of the motor
  • Figure 4 is a reference diagram showing a structure in which a magnet is attached to the inner surface of the housing in the conventional electric motor using an adhesive.
  • the electric wire (c) drawn into the housing (b) of the electric motor Has a structure in which through the through hole a1 formed in the fixed shaft a forming the center of rotation of the rotor b1, the fixed shaft a has a space in which the through hole a1 is formed.
  • the durability is inevitably weakened, and in particular, when the wire c is thickened or the number of the wires c increases in order to generate more magnetism, the fixing shaft a and the through hole formed therein ) Also has to be large, so that the volume and weight of the electric motor also increases.
  • the work between h) and the rotor (b1) by bolts is difficult to proceed smoothly due to the narrow space constraint, and also the welding between the angle (h) and the rim (f) for welding
  • the joining operation is a deformation of the angle (h) as well as the rim (f) by the heat generated during the welding operation so that the shape of the combined rim (f) is further away from the shape of the round, the rim (f) )
  • the rotation balance of the wheel (g) is not a problem, and also Due to the same complex process, there is a problem that it is difficult to proceed an efficient process due to the time and cost required.
  • the structure of attaching the magnet i to the inner circumferential surface of the rotor b1 in the conventional electric motor illustrated in FIG. 4 by using an adhesive uses a single adhesive to the inner circumferential surface of the rotor b1. Since i) is formed by attaching at regular intervals, the attaching process using an adhesive is complicated and inefficient in terms of manufacturing time and cost, and the formation of the magnet (i) accurately at regular intervals also occurs in the manufacturing process. In view of the cumulative tolerance, the magnetic field generated by the magnet (i) and the resulting magnetic force are deteriorated. Of course, the magnet (i) is the rotor (b1) during operation due to a driving shock.
  • the present invention has been made to solve the above problems,
  • An object of the present invention is to allow the electric wire to be introduced into the housing of the electric motor through the wire entry hole of the fixed shaft coupling portion that is fixed and coupled surrounding the fixed shaft, not the fixed shaft, a separate through hole for the introduction of the wire to the fixed shaft It is to provide an electric motor for an electric vehicle so as not to be formed to maintain a high strength without increasing the diameter of the fixed shaft.
  • Another object of the present invention is to provide an electric motor for an electric vehicle which can prevent the electric wire from being easily damaged from external shock by preventing the electric wire drawn out from the end of the electric wire insertion hole to be protected by the support and not exposed to the outside. .
  • Another object of the present invention is an electric motor for an electric vehicle that can adjust the rotational balance of the rotor using a balancing weight, including a balancing weight groove that can insert a balancing weight in the circumferential direction of the housing, in particular, the rotor To provide.
  • Still another object of the present invention is simple by engaging the rim fixing the wheel by using the first and second rim side engaging portion which is coupled and formed along the circumference of the outer circumferential surface of the rotor to contact the side of the rim to press the rim And to provide an electric motor for an electric vehicle that can be fixed to the housing in an easy operation.
  • Still another object of the present invention is to connect the first and second rim side engaging portions and the rim to the rotor using bolts that penetrate through the second rim side engaging portions and are coupled to the first rim side engaging portions, thereby simplifying welding.
  • the rim can be fixed to the housing by an easy coupling operation to provide an electric motor for an electric vehicle that can prevent deformation of the rim due to welding.
  • Still another object of the present invention is that the first rim engaging portion and the second rim engaging portion are formed in a round shape with connecting portions of the first portion abutting the side of the rim and the second portion abutting the bottom of the rim, respectively. It is to provide an electric motor for an electric vehicle that can improve the alignment by supplementing the defects of the rim that is not achieved.
  • Another object of the present invention is to form a downward inclined portion to the first portion to press the side of the rim obliquely, thereby exerting a wedge effect when pressing the side of the rim to more firmly fix the rim It is to provide an electric motor for an electric vehicle.
  • Still another object of the present invention is to increase the amount of magnetic flux in the same area by the magnet insertion grooves formed at a predetermined interval in the core to make the 'V' shape as a whole to repeat the mutually opposite inclination angle between mutually adjacent magnet insertion grooves It is to provide an electric motor for an electric vehicle that can maximize the magnetomotive force.
  • Still another object of the present invention includes a first core coupled to the core and fixed to the outermost inner surface of the rotor, and a second core coupled to the central inner surface of the rotor to maximize press force. It is to provide an electric motor for an electric vehicle that can exert a torque.
  • An electric motor for an electric vehicle for achieving the above object of the present invention includes the following configuration.
  • An electric motor for an electric vehicle includes a fixed shaft; And a housing including a stator coupled to the fixed shaft and a rotor that rotates about the fixed shaft, wherein the stator includes a separate wire through which a wire can be inserted into a fixed shaft coupling portion that is coupled and fixed around the fixed shaft.
  • the stator includes a separate wire through which a wire can be inserted into a fixed shaft coupling portion that is coupled and fixed around the fixed shaft.
  • the wire entry hole is formed so that its end is spaced apart from the support coupled to the fixed shaft by a predetermined interval, withdraw from the end of the wire entry hole
  • the wire is protected by the support so that it is not exposed to the outside, it is characterized in that it is possible to prevent the wire from being easily damaged from external impact.
  • the housing in the electric motor for an electric vehicle according to the present invention, includes a balancing weight groove capable of inserting a balancing weight in the circumferential direction of the rotor, using the balancing weight It is characterized in that to adjust the rotation balance of the rotor.
  • the rotor in the electric motor for an electric vehicle according to the present invention, includes a first rim side engaging portion which is formed along the circumference of the outer circumferential surface and abuts the side of the rim fixing the wheel; And a second rim side engaging portion inserted along the outer circumferential surface of the rotor and spaced apart from the first rim side engaging portion to be in contact with the other side of the rim. While coupled to the first and second rim side engaging portion at the same time by pressing the side of the rim is characterized in that for fixing the rim to the housing.
  • the second rim side coupling part passes through the second rim side coupling part and rotates using a bolt that is bound to the first rim side coupling part.
  • the first rim engaging portion in contact with the side of the rim at the first rim side engaging portion, and the rim at the second rim side engaging portion
  • the second rim engaging portion which is in contact with the side of the rim, is formed in a round shape with the connecting portions of the first portion, which is in contact with the side of the rim, and the second portion, which is in contact with the bottom of the rim, respectively. It can be improved.
  • the first portion is formed to have a predetermined downward slope to press the side of the rim at an angle, so that the side of the rim is formed. It is characterized by being able to fix the rim more firmly by exerting a wedge effect when pressurized.
  • the electric motor for an electric vehicle according to the present invention further includes a core in which magnet insertion grooves capable of inserting magnets while being fixed to the inner surface of the housing are formed at regular intervals, thereby providing a motor of the motor. It is possible to prevent the safety problems due to detachment of the magnet during operation and to maximize the magnetomotive force by maintaining the gap between the magnets accurately.
  • the magnet insertion grooves are formed to have the same inclination angles opposite to each other, so that the 'V' shape is repeated as a whole.
  • the magnetic flux can be maximized by increasing the amount of magnetic flux in the area.
  • the core is coupled to the first core fixed to the outermost inner surface of the rotor and the inner surface of the central portion of the rotor is coupled Including a second core that is fixed, it is characterized in that to maximize the magnetic force to exert a large torque.
  • the present invention can obtain the following effects by the configuration, combination, and use relationship described above with the present embodiment.
  • the electric wire drawn into the housing of the electric motor is introduced through the wire inlet hole of the fixed shaft coupling part which is fixed and coupled around the fixed shaft, not the fixed shaft, thereby forming a separate through hole for the introduction of the wire to the fixed shaft. It does not have the effect of maintaining the high strength without increasing the diameter of the fixed shaft.
  • Another object of the present invention is to prevent the wire is drawn from the end of the wire entry hole is protected by the support so that the wire is not exposed to the outside, thereby preventing the wire from being easily damaged.
  • Still another object of the present invention includes a balancing weight groove capable of inserting a balancing weight in a circumferential direction of the housing, in particular, the rotor, and has the effect of adjusting the rotational balance of the rotor using a balancing weight.
  • the present invention is a simple and easy operation by combining the rim fixing the wheel using the first and second rim side engaging portion which is coupled and formed along the circumference of the outer circumferential surface of the rotor to press the rim in contact with the side of the rim This has the effect of fixing the rim to the housing.
  • the present invention provides a simple and easy joining operation without welding by joining the first and second rim side engaging portions and the rim to the rotor using bolts that penetrate through the second rim side engaging portions and bound to the first rim side engaging portions.
  • the rim can be fixed to the housing, thereby preventing the deformation of the rim due to the welding operation.
  • the first rim engaging portion and the second rim engaging portion are formed in a round shape, respectively, in which the connecting portion of the first portion abutting the side of the rim and the bottom portion of the rim is not rounded. It has the effect of improving the alignment by supplementing the shortcomings.
  • the first portion is formed to be inclined downward by a predetermined portion so as to press the side of the rim at an angle, thereby exerting a wedge effect when pressing the side of the rim to more firmly fix the rim.
  • the present invention further includes a core in which magnet insertion grooves capable of inserting magnets while being coupled to and fixed to the inner surface of the housing are formed at regular intervals without attaching the magnet directly to the inner surface of the housing by using an adhesive. It has the effect of maximizing the magnetomotive force by preventing the safety problem caused by the detachment and maintaining the gap between the magnets accurately.
  • magnet insertion grooves formed at regular intervals in the core are inclined angles mutually adjacent to each other so that the 'V' shape is repeated as a whole, thereby increasing magnetic flux in the same area to maximize magnetomotive force. Has the effect.
  • the present invention includes a first core coupled to the core and fixed to the outermost inner surface of the rotor, and a second core coupled to the inner surface of the central portion of the rotor to maximize the magnetomotive force to exhibit a large torque. It has an effect.
  • 1 is a reference diagram showing a structure in which the wire is drawn through the through hole of the fixed shaft in a conventional electric motor
  • FIG. 2 is a reference diagram showing a coupling structure of the fixed shaft and the support in the conventional electric motor
  • FIG. 3 is a reference diagram showing a coupling structure of a housing and a rim of a motor in a conventional electric motor
  • FIG. 4 is a reference diagram showing a structure in which a magnet is attached to the inner surface of the housing in the conventional electric motor using an adhesive;
  • FIG. 5 is a cross-sectional view showing the structure of an electric motor for an electric vehicle according to an embodiment of the present invention.
  • FIG. 6 is a reference diagram showing a state that the wire is drawn in the fixed shaft coupling portion in the electric motor for an electric vehicle according to an embodiment of the present invention.
  • FIG. 7 is a reference diagram showing a state that the wire drawn out from the fixed shaft coupling portion is protected by the support
  • FIG. 8 is a reference diagram showing a state in which the balancing weight is installed on the outside of the housing in the electric motor for an electric vehicle according to an embodiment of the present invention.
  • FIG. 9 is an exploded perspective view showing a portion in which the fixed shaft and the support in the electric motor for an electric vehicle according to an embodiment of the present invention.
  • FIG. 10 is an exploded perspective view showing another embodiment in which the support and the binding holding part are coupled to each other in FIG. 9;
  • Figure 11 is an exploded perspective view showing an embodiment in which the second support and the second binding retaining portion is coupled to the other side of the fixed shaft;
  • FIG. 12 is a reference diagram showing a relationship that the rim is coupled to the outer peripheral surface of the rotor in the electric motor for an electric vehicle according to an embodiment of the present invention
  • FIG. 13 is an enlarged reference view illustrating a portion where the first and second rim side coupling portions and the rim are coupled to each other;
  • FIG. 14 is a reference diagram showing a relationship in which the core is inserted into the magnet on the inner peripheral surface of the rotor in the electric motor for an electric vehicle according to an embodiment of the present invention
  • 15 is a reference diagram showing a core in which the magnet insertion grooves are formed at regular intervals.
  • 210 rotor (210-1: first rotor, 210-2: second rotor)
  • first rim side engaging portion 2111 first rim engaging portion 21111: first portion 21112: second portion
  • second rim side coupling portion 2121 second rim coupling portion 21211: first portion 21212: second portion
  • stator 221 armature core 222: armature coil
  • FIG 5 is a cross-sectional view showing the structure of an electric motor for an electric vehicle according to an embodiment of the present invention
  • Figure 6 is a wire drawn from the fixed shaft coupling portion in the electric motor for an electric vehicle according to an embodiment of the present invention
  • Figure 7 is a reference diagram showing a state
  • Figure 7 is a reference diagram showing a state that the wire drawn from the fixed shaft coupling portion is protected by the support
  • Figure 8 is an electric motor for an electric vehicle according to an embodiment of the present invention Reference diagram showing the appearance of the balancing weight on the outside of the housing.
  • an electric motor for an electric vehicle includes a housing 20 including a fixed shaft 10, a stator 220, and a rotor 210.
  • the fixed shaft 10 is configured to penetrate the center of the electric motor according to the present invention, the rotor 210 to be described later is coupled to the fixed shaft 10 is rotated about the fixed shaft 10 by electric The rotation center of the motor is achieved. Therefore, it is important to secure durability so that the fixed shaft 10 can firmly support the housing 20 including the rotor 210 even in a driving shock.
  • the housing 20 is configured to form the inner and outer skeleton of the electric motor according to the present invention, the stator 220 is coupled to the fixed shaft 10 and the rotor rotating around the fixed shaft 10 ( 210).
  • the stator 220 is a part fixed to the fixed shaft 10, the fixed shaft coupling portion 223 is fixed to the fixed shaft 10 and coupled to the fixed shaft 10, the fixed shaft coupling An electric magnetic core 221 that protrudes from one side of the unit 223 to allow the electric magnetic coil 222 to be wound, and an electric magnetic coil that is wound around the electric magnetic core 221 to generate a magnetic field when a current is supplied.
  • the armature core 221 is preferably formed by laminating a thin silicon steel sheet in order to pass the magnetic field lines well and reduce the eddy current, and a groove may be formed at one side so that the armature coil 222 may be wound. .
  • the armature coil 222 is wound around the armature core 221 (preferably a groove formed on one side of the armature core 221) while being able to be connected in series or in parallel and using either ⁇ or Y connections.
  • a wire 60 is connected to the armature coil 222 so that a current can be supplied.
  • a magnetic field is generated in the armature coil 222, and the armature coil 222
  • the magnetic field generated by interacts with the magnetic field formed by the magnet 214 formed on the inner surface of the rotor 210, which will be described later, to generate magnetic force, and the rotor 210 to be described later is fixed by the magnetic force. It is rotated about the axis 10.
  • the rotor 210 is a portion that rotates about the fixed shaft 10, the surface is largely open to form a generally cylindrical space in which the fixed shaft 10 and the stator 220 can be inserted therein.
  • the first rotor 210-1 and the first rotor 210-1 are detachably coupled to an open surface of the first rotor 210-1 to fix the shaft 10 and the stator 220 inside the first rotor 210-1.
  • the second rotor 210-2 to close the housing 20 of the electric motor may have a structure in which they are coupled to each other.
  • the magnetic fields generated in the armature coil 222 are disposed on the inner circumferential surface of the rotor 210, more specifically, the first rotor 210-1 so that the magnets 214 cross each other at regular intervals. Due to the electromotive force by the interaction with the entire rotor 210 including the magnet 214 is rotated.
  • the rotor 210 more specifically, the cylindrical outer peripheral surface of the first rotor (210-1) rim 70 for fixing the wheel 80 (this is a configuration commonly referred to as a wheel) is combined
  • the wheels 80 may rotate in accordance with the rotation of the rotor 210.
  • the first rotor 210-1 is fixed to the fixed shaft 10
  • the second rotor 210-2 is fixed shaft 10 which will be described later in more detail than the fixed shaft 10. Coupled to the coupling portion 223 as a bearing, the fixed shaft 10 is rotated to the center of rotation.
  • the stator 220 includes a separate wire entry hole 2231 into which the wire 60 may be inserted into the fixed shaft coupling portion 223.
  • a separate through hole for the introduction of the wire 60 in the fixed shaft 10 is characterized in that to maintain a high strength without increasing the diameter of the fixed shaft (10).
  • the wire (c) drawn into the housing (b) of the electric motor is Since the inlet is formed through the through hole a1 formed in the fixed shaft a that forms the center of rotation of the rotor b1, the fixed shaft a is as durable as a space in which the through hole a1 is formed.
  • the fixed shaft (a) and the through-hole (a1) formed therein according to the thickening of the wire (c) or the number of wires (c) in order to generate more magnetism in particular As the diameter of the through hole (a1) increases, the durability of the fixed shaft (a) is weakened, or when the diameter of the fixed shaft (a) is increased to make up for it, the volume and weight of the electric motor are also increased.
  • the fixed shaft coupling part 223 surrounds a part of the fixed shaft 10 and is fixed to the fixed shaft 10 to form a skeleton foundation of the stator 220. do.
  • the second rotor 210-2 described above is coupled to the fixed shaft coupling part 223 fixed to the fixed shaft 10 to rotate about the fixed shaft 10.
  • the fixed shaft 10 always forms a constant diameter regardless of whether the fixed shaft coupling portion 223 is formed or not.
  • the wire introduction hole 2231 penetrates through the fixed shaft coupling portion 223 surrounding the fixed shaft 10 in the longitudinal direction as shown in FIG. 5 so that the wire 60 from the outside is connected to the wire introduction hole ( In order to be introduced into the housing 20 through the 2231, the fixed by the wire 60 through the wire entry hole (2231) formed separately in the fixed shaft coupling portion 223 to the fixed
  • the shaft 10 is secured to the durability of the fixed shaft 10 by preventing the formation of a separate through-hole for the introduction of the wire 60, unlike the conventional.
  • a plurality of wire drawing holes 2231 may be formed in accordance with the number of wires 60 drawn therein, or may have a large diameter in accordance with the diameter of the wires 60.
  • the present invention includes a bar, In order to solve the above problems, as shown in FIGS.
  • the end of the side toward the outside of the wire inlet hole 2231 is coupled to the fixed shaft 10 (40, which is a fixed shaft ( 10) is configured to be connected to the frame 50 of the electric vehicle, it is formed so as to be spaced apart from a predetermined interval from the reference to be described later, the wire drawn out from the end of the side toward the outside of the wire entry hole (2231) ( 60) As shown in FIG. 7, by being protected by the support 40 so as not to be exposed to the outside, it is possible to prevent the wire 60 from being easily damaged from external shock.
  • the wire entry hole 2231 may have a direction in which the wire entry hole 2231 is formed so that the wire 60 drawn out from the wire entry hole 2231 can be more effectively protected by the support 40.
  • An end of the wire inlet 2223 toward the outside may be inclined in the direction in which the wire 60 is bent.
  • the housing 20 includes a balancing weight groove 215 capable of inserting the balancing weight 216 in the circumferential direction of the rotor 210. 216 to adjust the rotational balance of the rotor (210).
  • the rotor 210 is configured to rotate about the fixed shaft 10 as described above, in particular, the rotor 210 that is rotated at high speed rotates smoothly at high speed when the rotation balance is correct during rotation. And, so that the wheel 80 is fixed to the outer circumferential surface of the rotor 210 is rotated together also can be rotated without rolling the electric vehicle body, the magnet inside the rotor 210 Since many configurations, including 214, are attached, it is difficult for the rotor 210, which includes these configurations, to be balanced by itself.
  • the balancing weight groove 215 to include a balancing weight groove 215 which can insert the balancing weight 216 in the circumferential direction of the rotor 210 from the outside of the rotor 210. Inserted in and adjust the weight of the plurality of balancing weights 216 to be positioned along the circumferential direction of the rotor 210 to adjust the rotational balance of the rotor 210 is not rotating balance itself by itself do.
  • the balancing weight groove 215 is formed to be inserted to insert the balancing weight 216 in the circumferential direction of the rotor 210, in order to precisely adjust the rotation balance of the rotor 210 Bar balancing weight 216 is to be inserted, the balancing weight groove 215 is preferably formed a plurality in the circumferential direction of the rotor 210, the balancing weight groove 215 is a rotor ( It is formed on the outer circumferential surface of the 210 to make the balancing weight 215 detachable from the outside to facilitate the coupling operation.
  • the balancing weight 216 is inserted into the balancing weight groove 215 is inserted into the plurality of plural along the circumferential direction of the rotor 210 by itself rotational balance of the rotor 210 does not match the rotation balance
  • a plurality of balancing weights 216 each having a different weight may be properly inserted into the balancing weight groove 215 to adjust the rotational balance.
  • the balancing weight groove located on one side of the rotor 210 The balancing weight 216 is inserted into the balancing weight 216 having a relatively large weight, and the balancing weight 216 having a relatively small weight is inserted into the balancing weight groove 215 located at the other side of the rotor 210.
  • the rotational balance of the rotor 210 is adjusted.
  • FIG. 9 is an exploded perspective view illustrating a part in which a fixed shaft and a support are coupled to an electric motor for an electric vehicle according to an embodiment of the present invention
  • FIG. 10 is a view illustrating another embodiment in which the support and the coupling maintaining part are coupled to each other in FIG. 9.
  • 11 is an exploded perspective view
  • FIG. 11 is an exploded perspective view showing an embodiment in which the second support and the second binding support unit are coupled to each other on the fixed shaft.
  • the electric motor for an electric vehicle supports the fixed shaft 10 on the end surface of the fixed shaft coupling portion 223 and the frame of the electric vehicle
  • the support 40 which is connected to the support (50) includes a separate support for binding unit 2232 that can be bound, the support 40 in the state in which the support 40 is bound to the support binding unit 2232 And a binding retaining portion 30 which covers the end surface of the fixed shaft coupling portion 223 to prevent the fixed shaft 10 from being separated from the support 40. Coupled with the support 40 by the coupling means 321 is characterized in that the fixed shaft 10 from the support 40 can be prevented from being separated.
  • the fixed shaft (a) on one side of the support (d) for supporting the fixed shaft (a) Since only the nut (e) is screwed to the fixed shaft (a) and the support (d) is only a method of combining the fixed shaft (e) when the nut (e) is loosened by the driving shock caused by frequent driving, etc.
  • additional binding holding unit 30 is added to solve the above problems Including so that the binding holding unit 30 is coupled to the support 40 by the coupling means 321 to prevent the fixed shaft 10 from being separated from the support 40.
  • the support 40 has one end supporting the fixed shaft 10 and the other end is connected to the frame 50 of the electric vehicle so that the fixed shaft 10 can be fixed integrally with the frame 50 of the electric vehicle.
  • one end of the support 40 for supporting the fixed shaft 10 is fixed shaft insertion groove 410 is formed is embedded so that the fixed shaft 10 can be inserted and coupled as shown in FIG. It may include a first end 420 and the second end 430 to form a.
  • the diameter of the fixed shaft insertion groove 410 is preferably formed to correspond to the diameter of the fixed shaft 10 to facilitate the insertion coupling of the fixed shaft (10).
  • the support binding unit 2232 is a portion formed so that the support 40 can be bound to the distal end of the fixed shaft coupling portion 223, the support 40 is inserted as shown in FIG.
  • a groove portion 22321 is formed to be recessed in parallel to each other so that the first end portion 420 and the second end portion 430 of the support 40 can be inserted along the direction, and between the groove portion 22321 is fixed shaft. 10 is protruded to be fitted into the fixed shaft insertion groove 410 formed between the first end portion 420 and the second end portion 430 of the support 40 which is coupled to the groove portion 22321. do.
  • the wire entry hole 2231 described above in the present invention can be effectively protected by the support 40, the wire 60 drawn out from the wire entry hole 2231 is bound to the support binding unit 2232.
  • the wire entry hole (2231) is formed to the position where the groove portion 22321 of the support binding unit 2232 is formed so that the wire 60 drawn from the wire entry hole (2231) naturally It is preferable to be protected from an external shock by the support 40 bound to the support binding unit 2232.
  • the binding holding unit 30 covers the end surface (outer surface) of the support 40 and the fixed shaft coupling portion 223 in a state in which the support 40 is bound to the support binding unit 2232.
  • the central portion of the binding holding portion 30 is formed through the hole so that the fixed shaft 10 can pass through
  • both sides of the binding holding part 30, more specifically, both sides of the first end portion 420 and the second end portion 430 of the support 40 are located in the direction in which the groove portion 22321 is inserted.
  • a first protruding end 310 and a second protruding end 320 may be formed to protrude a predetermined length to cover the outer surface of the support 40 including the first end 420 and the second end 430.
  • the first protruding end 310 is a portion formed by protruding a predetermined length from the binding holding part 30 toward the distal side of the support 40, and the length of the protruding end of the first protruding end 310 is the support ( It is preferably formed to a length that can cover the end of the 40).
  • the second protruding end 320 is formed to protrude a predetermined length to a position facing the first protruding end 310 around the through hole through which the fixed shaft 10 penetrates in the binding holding unit 30. It is a part which covers the outer surface of 40. As shown in FIG.
  • the side between the first protrusion 310 and the second protrusion 320 in the binding holding portion 30 surrounds the outer surface of the fixed shaft coupling portion 223, the fixed shaft coupling portion 223
  • the shape corresponding to the outer surface of the as shown in Figure 9 is formed in a round shape to perform the function of maintaining the binding of the support 40.
  • the coupling means 321 is not limited to a specific means as long as it implements such a function as a configuration for coupling the binding holding portion 30 and the support 40 to each other (that is, a coupling bolt inserted into the through hole) Or a pin or the like), and in a preferred embodiment, the bottom surface of the binding retaining portion 30, more specifically, the abutment holding portion 30 in contact with the outer surface of the support 40
  • the surface forms a coupling protrusion 3211 protruding a predetermined length, and in the outer surface of the support 40 which is in contact with the coupling protrusion 3211 into the length corresponding to the protruding length of the coupling protrusion 3211.
  • the coupling groove 3212 is formed to form the Whereby the engaging projection 3211 is inserted into the coupling groove 3212 can be applied to a structure for coupling the coupling the holding portion 30 and the support 40 between each other.
  • the binding holding unit 30 is merely a simple operation of binding the binding holding unit 30 to a proper position without a separate configuration.
  • the support 40 will have the advantage of being able to combine with each other.
  • the binding holding part 30 is coupled to the support shaft 40 using bolts coupled to the fixed shaft 10.
  • the binding retaining portion 30 is easily fixed from the support 40 even when the coupling of the bolt is loosened somewhat, such as driving shock. It is possible to prevent the departure.
  • the binding holding part 30 may be configured to prevent the first end 420 and the second end 430 of the support 40 from being opened during use.
  • the bent portions 311 are formed on both sides of the one protruding end 310 so that the binding holding portion 30 covers the end surfaces (outer surfaces) of the support 40 and the fixed shaft coupling portion 223. Both sides of the bent first protruding end 310 may be coupled to both sides of the first end 420 and the second end 430 by using the bent part 311. The first and second ends 420 and 430 may be prevented from spreading.
  • the end portion side side of the first and second ends 420 and 430 is further formed with a configuration such as an end recess (not shown) which is formed by a predetermined length so that the bent portion 311 to be described later can be accurately fitted. May be
  • the bent portion 311 is a portion extending and bent from both sides of the first projection end 310 of the binding holding portion 30, as shown in Figure 10 the binding holding portion 30 is the support (
  • the bent portion 311 may be coupled to the distal end side sides of the first end portion 420 and the second end portion 430 while covering the distal end surface (outer side surface) of the 40 and the fixed shaft coupling portion 223.
  • the bent portion 311 may prevent the first and second ends 420 and 430 of the support 40 from being easily opened by the driving impact or the external impact.
  • the bent portion 311 may be further formed on both sides of the second projection end 320 of the binding holding portion 30, as shown in FIG.
  • the other end of the fixed shaft 10 more specifically, the fixed shaft ( 10) and one surface of the second support 40 'in a state in which the second support 40' supporting the caliper 90 and connected to the frame 50 of the electric vehicle supports the other end of the fixed shaft 10.
  • 30 ' may be further included, wherein the second support 40' and the second engagement holding portion 30 'are formed only in the overall shape with the above-described support 40 and the binding holding portion 30, respectively.
  • the function and the components are the fixed shaft insertion groove 410, the first end 420, the second end 430, the first protruding end 310, the second protruding end 320, Bends 311 and Texture
  • the second binding holding portion 30 ′ may be larger than the binding holding portion 30 in the shape as shown in FIG. 11, in which case the second binding holding portion 30 ′.
  • the second coupling protrusion 3211 is the same as the coupling protrusion 3211 and the coupling groove 3212 of the coupling means 321 to securely couple the 30 'to the second support 40'.
  • the second coupling groove 3212' may be further formed on one side of the second binding holding portion 30 '.
  • the second coupling protrusion 3211 ′ and the second coupling groove 3212 ′ are formed on the front surface of the fixed shaft 10, the second coupling protrusion 3211 ′ and the second coupling protrusion 3211 ′ may additionally prevent the fixed shaft 10 from being separated. It becomes possible.
  • FIG. 12 is a reference diagram showing the relationship between the rim is coupled to the outer peripheral surface of the rotor in the electric motor for an electric vehicle according to an embodiment of the present invention
  • Figure 13 is the first and second rim side coupling portion and the rim is coupled
  • Reference is an enlarged view of the part.
  • the electric motor for an electric vehicle according to the present invention is fitted with one side of the rim 70, the rotor 210 is formed along the circumference of the outer circumferential surface to fix the wheel 80. It includes a first rim side engaging portion 211 which is in contact, and is fitted along the outer circumferential surface of the rotor 210 and spaced apart from the first rim side engaging portion 211 by a predetermined distance and the other side of the rim (70)
  • the second rim side engaging portion 212 further includes abutment, so that the first and second rim side engaging portions 212 are coupled to the rotor 210 at the same time.
  • first and second rim side coupling parts without welding work ( 211 and 212 simultaneously pressurize both sides of the rim 70 to fix the rim 70 to the housing 20 so as to solve the inefficiency due to the deformation of the material by the welding operation or a complicated process.
  • the first rim side engaging portion 211 is formed along the circumference of the outer circumferential surface of the rotor 210 to be in contact with one side of the rim 70 for fixing the wheel 80, as shown in FIG.
  • the outer rim of the rotor 210 is formed to protrude a certain height along the circumference of the outer circumferential surface, and may form a first rim engaging portion 2111 contacting the side of the rim 70 on one side of the protruding portion. have.
  • the first rim engaging portion 2111 is a portion formed so that the rim 70 abuts on a protruding side of the first rim side engaging portion 211, as shown in FIG. 13.
  • a first portion 21111 forming a plane in a substantially vertical direction to be in contact with one side of the 70, and a second portion 21112 forming a plane in the horizontal direction to be in contact with a bottom surface of the rim 70. It may be formed to include.
  • the first portion 21111 is a portion that forms a surface in a substantially vertical direction so as to be in contact with one side of the rim 70 in the first rim engaging portion 2111, in particular the first portion 21111 is Rather than forming an exact vertical (vertical), it is preferable to form a predetermined downward inclination ( ⁇ ) so that one side of the rim 70 can be pressed at an angle. This is to exert a wedge effect when pressing the side of the rim 70 together with the one part 2211 to more firmly fix the rim 70.
  • the second portion 21112 is a portion that forms a surface in the horizontal direction so as to contact the bottom surface of the rim 70 in the first rim engaging portion 2111, the second portion 21112 will be described later
  • the rim 70 together with the second portion 221212 of the rim engaging portion 2121 may be seated between the first rim side engaging portion 211 and the second rim side engaging portion 212.
  • 70) Make the width equal to the width of the base.
  • the connecting portion of the first portion 21111 and the second portion 21112 is formed in a round shape, so that between the first rim side engaging portion 211 and the second rim side engaging portion 212.
  • the alignment of the rim 70 and the wheel 80 to be connected can be satisfactorily set and maintained by allowing the rim 70 to be seated on one side to be aligned as much as possible without being caught on one side or unstable.
  • the second rim side engaging portion 212 is fitted along the outer circumferential surface of the rotor 210 to be spaced apart from the first rim side engaging portion 211 by a predetermined distance so as to be in contact with the other side of the rim 70.
  • the rim is formed on one side of the protruding portion that protrudes a predetermined height than the outer circumferential surface of the rotor 210.
  • the second rim engaging portion 2121 may be formed to be in contact with the other side of the 70.
  • the second rim engaging portion 2121 has a surface in a substantially vertical direction so as to be in contact with one side of the rim 70 to correspond to the first rim engaging portion 2111. And a second portion 221212 forming a surface in a horizontal direction so as to contact the bottom surface of the rim 70. Since the first portion 221211 and the second portion 221212 perform the same functions as the first portion 21111 and the second portion 21112 of the first rim coupling portion 2111, respectively, The description is omitted.
  • the second rim side engaging portion 212 is inserted into the outer surface of the second rim side engaging portion 212, as shown in Figure 13, etc.
  • the rim 70 can be fastened to the outer circumferential surface of the bar.
  • the rim 70 can be firmly fastened without a separate welding operation, thereby shortening the manufacturing process and improving the aesthetics seen from the outside.
  • FIG. 14 is a reference diagram illustrating a relationship in which a core inserted with a magnet is coupled to an inner circumferential surface of a rotor in an electric motor for an electric vehicle according to an embodiment of the present invention
  • FIG. 15 is a core in which magnet insertion grooves are formed at regular intervals. Reference is also shown.
  • an electric motor for an electric vehicle includes the rotor 210, more specifically, the first rotor 210-1 or the second rotor 210-2.
  • the magnetic insertion groove 2131 for inserting the magnet 214 while being fixed and fixed to the inner circumferential surface of the magnet 214 may be further included. It is characterized in that it is possible to maximize the magnetic force by preventing the safety problem due to detachment and maintaining the gap between the magnets 214 accurately.
  • the magnet i is attached to the inner circumferential surface of the rotor b1 using an adhesive in the conventional electric motor shown in FIG. 4, the magnet i is conventionally used by using an adhesive on the inner circumferential surface of the rotor b1.
  • the housing 20 may be formed of a lighter material than steel, thereby improving inefficiency due to overweight.
  • the core 213 is coupled to the inner circumferential surface of the rotor 210 and the magnet insertion groove 2131 for inserting the magnet 214 is formed at a predetermined interval, in this case the core 213 is By forming the magnetic path of the magnet 214 to increase the magnetic force.
  • the core 213 forms a tubular tube shape that is capable of being coupled to the inner circumferential surface of the rotor 210 as a whole.
  • the diameter of the outer circumferential surface of the core 213 is inserted into the core 213.
  • the diameter of the inner circumferential surface of the electron 210 is equal to or preferably larger than that of the inner circumferential surface of the electron 210 so as to be firmly fixed by being press-fitted to the inner peripheral surface of the rotor 210.
  • the core 213 forming a diameter slightly larger than the inner circumferential surface of the rotor 210 is fixed to the inner circumferential surface of the rotor 210, heat is applied to the inner circumferential surface of the rotor 210, and then the core 213 is applied.
  • an adhesive may be used as necessary
  • the inner core surface of the rotor 210 is cooled, so that the inserted core 213 is firmly pressed in the rotor 210.
  • the inside of the core 213 penetrates from one side toward the other side and has a magnet insertion groove 2131 into which the magnet 214 can be inserted at a predetermined interval.
  • the material of the rotor 210 and the housing 20 may be made of aluminum instead of steel. Since the weight of the entire electric motor can be reduced, the efficiency can be improved.
  • the magnet insertion groove 2131 penetrates from one side of the core 213 toward the other side and forms a space in which the magnet 214 can be inserted.
  • the core 213 is illustrated in FIG. 15.
  • a plurality of magnet insertion grooves 2131 having a uniform shape at regular intervals in the radial direction of the () are arranged to be aligned.
  • the magnet insertion groove 2131 may be formed to be parallel to the radial direction of the core 213, in particular, as shown in FIG. 'By repeating the shape, it can be formed to maximize the magnetic force by increasing the amount of magnetic flux in the same area.
  • the magnetic flux generated from the magnet 214 increases as the area of the magnet 214 inserted along the circumference of the same core 213 increases, so that the magnet insertion groove 2131 is formed in FIG. 15.
  • the magnets 214 inserted into the magnet insertion grooves 2131 along the circumference of the core 213 are formed such that mutually adjacent magnet insertion grooves 2131 mutually incline to each other to form a 'V' shape. Increase the overall area of the) to increase the geomagnetic force exerted.
  • the distance between the magnets 214 coupled to the inner circumferential surface of the rotor 210 may be maintained uniformly, as well as the magnets 214.
  • the magnet 214 is not directly attached to the inner circumferential surface of the rotor 210, the material of the rotor 210 and the housing 20 can be formed of aluminum instead of steel, thereby reducing the weight of the entire electric motor. This can improve the efficiency.
  • the core 213 inserted into the rotor 210 includes a first core 213-1 coupled to and fixed to the outermost inner circumferential surface of the rotor 210 as shown in FIG. 14, and the rotor.
  • the second core 213-2 may be coupled to and fixed to the inner circumferential surface of the central portion 210.
  • the first core 213-1 and the second core 213-2 differ only in the size and the installed position of the first core 213-1 and the second core 213-2, and are coupled to the rotor 210 or the magnet insertion groove 2131. In including, it is the same structure.
  • the first core 213-1 and the second core 213-2 are simultaneously fixed to the inner circumferential surface of the rotor 210 (that is, the armature coil 222 and the magnet 214 described above) It can be formed in multiple stages, thereby maximizing the magnetic force generated in one electric motor to exert a large torque.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Motor Or Generator Frames (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
PCT/KR2011/005409 2010-07-23 2011-07-22 전기자동차용 전기모터 WO2012011765A2 (ko)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2013520673A JP5988052B2 (ja) 2010-07-23 2011-07-22 電気自動車用の電気モーター
CN201180033137.1A CN102986118B (zh) 2010-07-23 2011-07-22 电动汽车用电动机

Applications Claiming Priority (2)

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KR1020100071268A KR101163108B1 (ko) 2010-07-23 2010-07-23 전기자동차용 전기모터
KR10-2010-0071268 2010-07-23

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WO2012011765A2 true WO2012011765A2 (ko) 2012-01-26
WO2012011765A3 WO2012011765A3 (ko) 2012-05-10

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CN102730148B (zh) * 2011-03-29 2014-09-10 本田技研工业株式会社 电动车辆用的电动机轴的配线结构
US10333362B2 (en) 2014-10-15 2019-06-25 Accelerated Systmes Inc. Internal permanent magnet motor with an outer rotor
CN106938588A (zh) * 2016-01-04 2017-07-11 宁波高新区清水绿山环保科技有限公司 一种无轴电动车车轮
JP7347742B2 (ja) * 2019-02-25 2023-09-20 ニデックアドバンスドモータ株式会社 搬送車
JP7311090B2 (ja) * 2019-02-25 2023-07-19 ニデックアドバンスドモータ株式会社 モータ

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CN102986118A (zh) 2013-03-20
CN102986118B (zh) 2015-05-27
JP2013531465A (ja) 2013-08-01
KR20120009969A (ko) 2012-02-02
KR101163108B1 (ko) 2012-07-06
JP5988052B2 (ja) 2016-09-07
WO2012011765A3 (ko) 2012-05-10

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