CN111404297A - Outer rotor of hub motor of electric vehicle - Google Patents
Outer rotor of hub motor of electric vehicle Download PDFInfo
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- CN111404297A CN111404297A CN202010093513.7A CN202010093513A CN111404297A CN 111404297 A CN111404297 A CN 111404297A CN 202010093513 A CN202010093513 A CN 202010093513A CN 111404297 A CN111404297 A CN 111404297A
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- annular body
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- outer rotor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2786—Outer rotors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention discloses an outer rotor of an electric vehicle hub motor, which belongs to the technical field of motor equipment and comprises a rim (1), magnetic conductive iron cores (2) and permanent magnets (3), wherein the rim (1) comprises a first annular body (101) and a fixed block (104), the width of the interval of the part, close to the first annular body (101), on the fixed block (104) is smaller than the width of the maximum interval of the part, far away from the first annular body (101), on the magnetic conductive iron cores (2), groove bodies (201) are arranged, the fixed block (104) is installed in the groove bodies (201), gaps are formed between the adjacent magnetic conductive iron cores (2), and the permanent magnets (3) are arranged in the gaps.
Description
Technical Field
The invention belongs to the technical field of motor equipment, and particularly relates to an outer rotor of an electric vehicle hub motor, which is used for driving an electric vehicle and the like.
Background
Electric bicycles are the mainstream of personal urban transportation means at present due to the advantages of economy, convenience, environmental protection and the like, gradually replace the traditional bicycles and motorcycles to enter the market in large quantity, and the quantity of the electric bicycles in the market is gradually increased. However, the key factor restricting the development of the electric vehicle and the bicycle at present is that the power performance and the continuous running capability of the electric vehicle need to be further improved, and the fundamental reason is that the magnetic leakage of the magnet in the motor rotor is serious. Therefore, how to improve the efficiency of the motor and reduce the energy consumption of the motor becomes the development direction of the motor. The permanent magnet motor has the advantages of simple structure, reliable operation, small volume, light weight, small loss, high efficiency, low noise, easy change of the shape and the size of the motor and the like, thereby being widely used in various fields.
The Chinese invention patent with application number 2018113064512, which is filed on 2018, 11 and 05, discloses a concavo-convex pole magnetic suspension hub motor and a control method thereof, wherein the concavo-convex pole magnetic suspension hub motor comprises a stator winding assembly, a connecting assembly used for connecting the stator winding assembly with a steering mechanism, a permanent magnet rotor assembly coaxially arranged on the outer side of the stator winding assembly and a tire assembly arranged on the outer side of the permanent magnet rotor assembly, the stator winding assembly comprises a stator shaft, an annular non-magnetic conductive body fixedly arranged on the outer side of the stator shaft and used for shielding a magnetic field and a plurality of groups of windings radially arranged on the outer side of the stator shaft by taking the axis of the stator shaft as the center; the permanent magnet rotor component comprises a plurality of permanent magnets and spaced non-magnetic conducting sheets arranged between two adjacent permanent magnets; the permanent magnets and the spaced non-magnetic-conductive sheets form an annular structure with the axis of the stator shaft as the axis; wherein, the directions of the magnetic fields taking the axis of the stator shaft as the axis of any two adjacent permanent magnets are opposite; the motor leads three-phase power with the phase difference of 120 degrees to a plurality of groups of windings arranged on the outer side of the stator shaft, so that any group of the plurality of groups of windings arranged on the outer side of the stator shaft generates longitudinal suspension force and rotary driving force which are periodically and alternately changed on the permanent magnet rotor assembly, and the permanent magnet rotor assembly is suspended and rotates around the axis of the stator shaft. The tire assembly is arranged on the outer circumferential surface of the permanent magnet rotor assembly to form the magnetic suspension motor, so that the structure is simple, and the cost is reduced.
The above method, like the conventional method, cannot solve the problem of serious magnetic flux leakage of the magnet in the rotor. In order to solve the problem of magnetic flux leakage of a magnet in a rotor, the applicant applies application number 2019218170734 on 27.10.2019, and the name of the patent is a utility model of a hub motor, which comprises a bearing, a stator, a rotor and an end cover, the hub motor is provided with a non-magnetic conductive material at the periphery of the magnetic conductive material, and a permanent magnet is arranged between adjacent magnetic conductive materials.
Disclosure of Invention
The invention aims to overcome the technical problems that the fixing capacity between a magnetic conducting iron core and a ring body I is not strong enough and the magnetic conducting iron core is easy to fall off in the prior art, and provides the outer rotor of the hub motor of the electric vehicle, which can effectively fix the magnetic conducting iron core and the ring body I, prevent the magnetic conducting iron core from falling off, effectively reduce the magnetic leakage of a magnet and effectively improve the use efficiency of electric energy.
In order to solve the technical problems, the invention provides an outer rotor of an electric vehicle hub motor, which comprises a rim, a magnetic conductive iron core and a permanent magnet, wherein the rim comprises a first annular body, second annular bodies are respectively arranged at the two ends close to the circumferential outer side of the first annular body, flanges are respectively arranged at the two side ends of the circumferential outer side of the first annular body, the second annular body and the flanges are of an integrated structure, a fixed block is arranged in the circumferential direction of the inner side wall of the first annular body, the fixed block and the first annular body are of an integrated structure, the width of the interval close to the part of the first annular body on the fixed block is smaller than the maximum interval far away from the part of the first annular body, the magnetic conductive iron core layer is fixedly arranged at the inner side of the first annular body after being overlapped, a groove body matched with the fixed block is arranged at the position of the first magnetic conductive iron core, and a columnar permanent magnet is arranged in the gap. The fixing block is used for fixing the magnetic conductive iron core, and in the prior art, the fixing effect is not good enough because the magnetic conductive iron core and the ring body I are fixed only by anaerobic adhesive; in the hub motor that the applicant has applied, although the recess is arranged at the position where the magnetic conductive iron core is opposite to the ring body, the number of the anaerobic adhesives is increased, and the combination capability is enhanced, the problem that the magnetic conductive iron core falls off cannot be thoroughly solved because the torsion of the magnetic conductive iron core is larger and the self weight of the magnetic conductive iron core is larger in the process of high-speed rotation of the rotor.
As a further improvement measure of the invention, in the outer rotor of the hub motor of the electric vehicle, a third annular body is arranged at one end in the circumferential direction of the inner side of the first annular body, the third annular body and the first annular body are of an integral structure, the thickness between the third inner side wall and the first outer side wall of the third annular body is smaller than that between the second inner side wall and the second outer side wall of the magnetic conductive iron core, and the third annular body can play a role in positioning the magnetic conductive iron cores, so that the magnetic conductive iron cores are arranged orderly, and anaerobic adhesive is conveniently added and coated to achieve a further fixing effect.
As a further improvement measure of the invention, the fixing block of the outer rotor of the hub motor of the electric vehicle is in a long strip shape, the axis direction of the long strip shape is parallel to the axis direction of the outer rotor, and the long strip shape fixing block can be inserted into the groove body of the magnetic conducting iron core to play a role in fixing.
As a further improvement measure of the invention, the radians between adjacent fixing blocks on the inner side wall of the first annular body are equal, so that the fixing blocks are uniformly arranged, and the magnetic conductive iron cores can also be uniformly arranged.
As a further improvement measure of the invention, in the outer rotor of the hub motor of the electric vehicle, the magnetic conductive iron core groove body is arranged on one side opposite to the first inner side wall of the annular body, an opening is arranged at the position, opposite to the first annular body, of the groove body, and the distance between the opening in the groove body is smaller than the maximum distance between the opening in the groove body, namely the opening in the groove body is small and the inner distance is large, so that the fixed block can be prevented from falling off from the opening in the groove body; the opposite position of the opening of the magnetic conductive iron core groove body is arc-shaped, so that the fixing block can be inserted into the groove body conveniently.
As a further improvement measure of the invention, in the outer rotor of the hub motor of the electric vehicle, the magnetic conductive iron cores are provided with the fastening points, one surface of each fastening point is provided with the groove, the other surface of each fastening point is provided with the protrusion, and the fastening points between the upper magnetic conductive iron core and the lower magnetic conductive iron core are in interference fit with each other, namely, the protrusion of the upper magnetic conductive iron core is in interference fit with the groove of the lower magnetic conductive iron core, so that the purpose of self-fastening is achieved, and the magnetic conductive iron cores are fixed more firmly.
As a further improvement measure of the invention, in the outer rotor of the hub motor of the electric vehicle, the two side edges of the magnetic conductive iron core are inclined by taking the central shaft as a symmetry axis, and the two sides of the end surface of one side of the magnetic conductive iron core, which is far away from the opening of the groove body, are provided with the transverse convex blocks, so that the convex blocks can reduce the cogging torque, improve the salient polarity of the motor, and have the function of limiting the installation of the magnet.
As a further improvement measure of the invention, in the outer rotor of the hub motor of the electric vehicle, the first annular body, the second annular body, the third annular body and the fixed block are arranged into an integral structure formed by non-magnetic conducting materials. The non-magnetic material is set to be one of thermosetting resin material, carbon fiber composite material and metal alloy material; the thermosetting resin material is phenolic resin or epoxy resin or unsaturated polyester resin; the non-magnetic material is set to be a non-magnetic carbon fiber composite material; the non-magnetic conductive material is made of metal alloy material, and the metal alloy material is one or more of aluminum-zinc alloy, aluminum-magnesium alloy and aluminum-copper alloy. The thermosetting resin material is set to be phenolic resin or epoxy resin or unsaturated polyester resin. The material has diamagnetism, so that magnetic flux leakage of the magnetic steel can be reduced. The non-magnetic material can also be arranged into a non-magnetic conductive carbon fiber composite material; the non-magnetic conductive material can also be set to be a metal alloy material, the metal alloy material is set to be one or more of aluminum-zinc alloy, aluminum-magnesium alloy and aluminum-copper alloy, the magnetic flux leakage of the magnetic steel can be reduced by the materials, and the effect is good.
As a further improvement measure of the invention, the cross section of the outer rotor of the hub motor of the electric vehicle is arranged in an inclined shape at the opposite position of the two annular bodies II and is used for placing the tire, and an inclined through hole which is mutually communicated is arranged between the annular body III and the annular body II and is used for installing the valve.
As a further improvement measure of the invention, the outer rotor of the hub motor of the electric vehicle is provided with grooves on the side surfaces of two ends of the second annular body for reducing the weight; and reinforcing ribs are arranged between the grooves, and fixing holes are formed in the reinforcing ribs and used for fixing the motor end cover.
Compared with the prior art, the invention has the beneficial effects that: 1. be provided with the fixed block through inside wall a circumferencial direction at ring bodies one, set up the cell body on magnetic conduction iron core, utilize fixed block and cell body to cooperate, reach the effect at the fixed magnetic conduction iron core of inside wall one of ring bodies, the anaerobism of scribbling is added in the deuterogamy, and the fixed effect of magnetic conduction iron core is better like this, can further improve electric motor car in-wheel motor's quality.
2. The third annular body is arranged at one end of the inner side of the first annular body in the circumferential direction, so that the magnetic conductive iron core and the permanent magnet can be conveniently installed, the processing efficiency of the outer rotor is improved, and the product quality of the outer rotor is improved.
3. The first annular body made of the non-magnetic material is arranged, the magnetic conductive iron cores made of the magnetic conductive material are arranged on the inner side of the first annular body, the permanent magnets are arranged between the magnetic conductive iron cores, and the permanent magnets are fixed between the magnetic conductive iron cores, so that the concentrated distribution of a magnetic field is facilitated, and the magnetic flux leakage phenomenon of the magnetic steel can be reduced.
4. The first annular body, the second annular body, the third annular body and the fixed block are arranged into an integral structure formed by non-magnetic-conductive materials, and magnetic flux leakage of the magnetic steel can be reduced.
5. The hub motor manufactured by the outer rotor has the advantages of simple structure, capability of controlling torque in a wide speed range, high response speed, capability of improving the utilization rate of electric energy and capability of improving the endurance mileage of an electric vehicle.
Drawings
Fig. 1 is one of perspective views of the present invention.
Fig. 2 is a front view of the present invention.
Fig. 3 is a top view of the present invention.
Fig. 4 is a sectional view taken along line a-a in fig. 3.
Fig. 5 is a second perspective view of the present invention.
Fig. 6 is a top view of the magnetically permeable core of the present invention.
FIG. 7 is a top view of the rim of the present invention.
Fig. 8 is a sectional view taken along line B-B in fig. 7.
Fig. 9 is a sectional view taken along line C-C in fig. 7.
The reference numbers illustrate: 1-rim, 101-ring body I, 102-ring body II, 103-flange, 104-fixed block, 105-ring body III, 106-inner side wall III, 107-outer side wall I, 108-inner side wall I, 109-through hole, 110-groove, 111-reinforcing rib, 112-fixed hole, 2-magnetic conductive iron core, 201-groove body, 202-inner side wall II, 203-outer side wall II, 204-opening, 205-fastening point, 206-central shaft, 207-lug and 3-permanent magnet.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
On the contrary, the invention is intended to cover alternatives, modifications, equivalents and alternatives which may be included within the spirit and scope of the invention as defined by the appended claims. Furthermore, in the following detailed description of the present invention, certain specific details are set forth in order to provide a better understanding of the present invention. It will be apparent to one skilled in the art that the present invention may be practiced without these specific details.
The outer rotor of the hub motor of the electric vehicle shown in fig. 1 and 3 comprises a rim 1, wherein a tire is placed on the circumferential outer side of the rim 1, magnetic conductive iron cores 2 are placed on the inner side of the rim 1, permanent magnets 3 are arranged between the adjacent magnetic conductive iron cores 2, and a stator is arranged on the inner side of each magnetic conductive iron core 2.
As shown in fig. 1 to 6, the rim 1 includes a first annular body 101 as a main body portion, second annular bodies 102 are respectively provided at both ends of the circumferential outer side of the first annular body 101, the opposing cross sections of the two second annular bodies 102 are arranged in an inclined shape, openings 204 in the inclined shape are provided outward, and flanges 103 are respectively provided at both side end portions of the circumferential outer side of the second annular bodies 102, so that the rim 1 constituted by the first annular body 101, the second annular bodies 102, and the flanges 103 is used for placing a tire.
As shown in fig. 1 to 9, the first ring-shaped body 101, the second ring-shaped body 102 and the flange 103 are integrated, the fixing block 104 is arranged in the circumferential direction of the first inner side wall 108 of the first ring-shaped body 101, the fixing block 104 and the first ring-shaped body 101 are also integrated, the first ring-shaped body 101, the second ring-shaped body 102, the third ring-shaped body 105 and the fixing block 104 are made of non-magnetic materials, and the purpose of making the magnetic flux of the permanent magnet 3 concentrate on the side opposite to the stator is to reduce the magnetic steel leakage phenomenon, which is beneficial to improving the electric energy utilization efficiency and the motor efficiency, so that the endurance mileage of the electric vehicle can be improved. The non-magnetic material is set to be thermosetting resin material, such as phenolic resin or epoxy resin or unsaturated polyester resin, and the material has diamagnetism, so that the magnetic flux leakage effect of the magnetic steel can be reduced; the non-magnetic conductive material can also be made of carbon fiber composite material, the carbon fiber composite material has small weight and high strength, and can reduce magnetic flux leakage of the magnetic steel, so that the effect is better; the non-magnetic conductive material can also be made of metal alloy materials, for example, one or more of aluminum-zinc alloy, aluminum-magnesium alloy and aluminum-copper alloy is utilized, and the magnetic steel has the advantages of low density, weight reduction and magnetic flux leakage reduction of magnetic steel.
In order to solve the technical problems that the fixing capacity between the magnetic conductive iron core 2 and the first ring body 101 is not strong enough and the magnetic conductive iron core 2 is easy to fall off in the prior art, a fixing block 104 is arranged in the circumferential direction of a first inner side wall 108 of the first ring body 101, the width of the interval between the first ring body 101 and the fixing block 104 is smaller than the width of the maximum interval between the first ring body 101 and the fixing block 104, if the cross section of the fixing block 104 is trapezoidal, the two sides of the cross section of the fixing block 104 can also be arc-shaped; the fixing block 104 is long, and the axis direction of the long strip is parallel to the axis direction of the outer rotor. As shown in fig. 1 to 5, the magnetic conductive iron cores 2 are stacked and then fixedly disposed on the inner side of the first ring body 101, the number of layers and the height of the magnetic conductive iron cores 2 are designed according to the requirement of the rotor, two magnetic conductive iron cores 2 adjacent to each other up and down are stacked and fixed by using the mutual fastening point 205, a slot 201 matched with the fixing block 104 is disposed at a position where the magnetic conductive iron cores 2 are opposite to the first ring body 101, the slot 201 of the magnetic conductive iron cores 2 is disposed at a side opposite to the first inner side wall 108 of the first ring body 101, an opening 204 is disposed at a position where the slot 201 is opposite to the first ring body 101, the distance between the opening 204 in the slot 201 is smaller than the distance between the maximum positions in the slot 201, for example, the distance between the slot 201 and the opening 204 is gradually increased from the inner side, the cross section of the cavity is in a ladder shape, and the cross section of the fixing block 104 is in a ladder shape, so that the cross In the slot 201 of the core 2, the distance opening 204 in the slot 201 is smaller, so that when the rotor rotates around the axis, the fixing block 104 cannot fall off from the slot 201, and the fixing block 104 can play a role in fixing the magnetic conductive iron core 2, thereby preventing the magnetic conductive iron core 2 from falling off. In order to further achieve the fixing effect, anaerobic adhesive can be added between the magnetic conductive iron core 2 and the first ring body 101 before the fixing block 104 is inserted into the magnetic conductive iron core 2, so that the fixing effect is further achieved. In order to facilitate the magnetic conductive iron core 2 to be inserted into the slot 201, the position opposite to the opening 204 of the slot 201 of the magnetic conductive iron core 2 is set to be arc-shaped, and the connecting position of the first ring-shaped body 101 and the fixing block 104 is also set to be arc-shaped.
As shown in fig. 1, fig. 3, and fig. 6, a fastening point 205 is provided on the magnetic conductive iron core 2 by stamping, the fastening point 205 may be set to be circular, or may be set to be rectangular or square, the fastening point 205 forms a recess and a protrusion on the magnetic conductive iron core 2, the recess and the protrusion between the upper and lower adjacent magnetic conductive iron cores 2 are in interference fit with each other, and the two adjacent magnetic conductive iron cores 2 are pressed against each other by using a pressing device, so as to achieve the purpose of self-fastening, and thus, the magnetic conductive iron cores 2 are fixed more firmly to form the columnar magnetic conductive iron cores 2. The fastening point 205 of the magnetic core 2 at the bottom layer needs to be set to be through hole shape to match with the protrusion of the fastening point 205 of the magnetic core 2 at the upper layer, and at the same time, the magnetic core 2 at the bottom layer can be kept to be plane and not protrude outwards.
As shown in fig. 1, 3, and 6, two side edges of each magnetic conductive iron core 2 are arranged in an inclined shape with the central axis 206 as a symmetry axis, so that after two adjacent magnetic conductive iron cores 2 are fixed on the fixed block 104, a gap is formed between the side edges of the adjacent magnetic conductive iron cores 2, the gap forms a cylindrical cavity, and a cylindrical permanent magnet 3 can be arranged in the gap. The two sides of the end face of the side of the magnetic conductive iron core 2 far away from the opening 204 of the slot body 201 are provided with the lugs 207 in the transverse direction, so that the cogging torque can be reduced, the salient polarity of the motor is improved, meanwhile, the installation limiting effect on the magnet is achieved, and the position of the permanent magnet 3 can be determined.
As shown in fig. 4 to 9, a third ring body 105 is arranged at one end of the inner side of the first ring body 101 in the circumferential direction, the third ring body 105 and the first ring body 101 are of an integral structure, one end surface of the third ring body 105 is arranged to be a plane, and the plane is opposite to the fixed block 104, so that the magnetic conductive iron core 2 and the permanent magnet 3 are convenient to mount; when the rim 1 is installed, after being horizontally placed, one end face of the ring body III 105 is also in a horizontal state, and as long as the magnetic conductive iron core 2 is inserted into the fixing block 104 from top to bottom, the ring body III 105 can play a role in positioning the magnetic conductive iron core 2, so that the magnetic conductive iron cores 2 are orderly arranged, and anaerobic adhesive is conveniently added and coated to further fix the rim. According to the invention, the annular body III 105 is arranged, so that the processing speed of the outer rotor can be increased, and the product quality of the outer rotor is improved. The cross section of the annular body III 105 can be rectangular, square, trapezoidal or triangular, and can be changed as required. The thickness between the inner side wall three 106 and the outer side wall one 107 of the annular body three 105, that is, the width of which one end surface is a plane, is smaller than the thickness between the inner side wall two 202 and the outer side wall two 203 of the magnetic conductive iron core 2, so that the annular body three 105 can be prevented from colliding with the stator iron core when the outer rotor rotates, the rotation of the outer rotor is influenced, and the quality of a product is influenced.
As shown in fig. 1, 3, and 5, the fixing blocks 104 are disposed in the circumferential direction on the inner sidewall 108 of the first annular body 101, and the radians between the adjacent fixing blocks 104 on the first annular body 101 are equal, that is, the adjacent fixing blocks 104 are arranged at equal intervals, so that the magnetic cores 2 are arranged uniformly in the circumferential direction, and the permanent magnets 3 between the magnetic cores 2 are arranged uniformly, thereby improving the quality of the product.
As shown in fig. 1 and 9, a through hole 109 is provided between the third annular body 105 and the second annular body 102 to allow the valve to be mounted therein.
As shown in fig. 1, 3, 5, 7 and 9, the recesses 110 are provided on both end side surfaces of the second annular body 102, so that the weight of the entire rim 1 can be reduced. The ribs 111 are provided between the recesses 110, so that the strength of the connection between the first annular body 101 and the third annular body 105 can be increased while reducing the overall weight of the rim 1. The reinforcing ribs 111 are provided with fixing holes 112 for fixing a motor end cover, and the motor end cover can be fixedly connected with the rim 1 through screws and has protection and dustproof functions.
The number of pairs of the outer rotor is 40 poles, 46 poles, 48 poles, 56 poles and the like, and the pairs are set according to the requirements of the hub motor, and the diameter of the stator and the laminated thickness of the magnetic conductive iron core 2 are set according to the requirements of the motor.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and it will be apparent to those skilled in the art that several modifications and improvements may be made without departing from the present invention, and these should be construed as falling within the scope of the present invention.
Claims (10)
1. The utility model provides an electric motor car in-wheel motor external rotor, includes rim (1), magnetic core (2) and permanent magnet (3), rim (1) include annular body one (101), be close to both ends department in the circumference outside of annular body one (101) respectively set up annular body two (102), be provided with flange (103) respectively in the both sides tip in the circumference outside of annular body two (102), its characterized in that: the magnetic conductive iron cores (2) are fixedly arranged on the inner side of the first ring body (101) after being stacked, groove bodies (201) matched with the fixing blocks (104) are arranged at the positions, opposite to the first ring body (101), of the magnetic conductive iron cores (2), the fixing blocks (104) are arranged in the groove bodies (201), gaps are formed between the adjacent magnetic conductive iron cores (2), and columnar permanent magnets (3) are arranged in the gaps.
2. The outer rotor of the electric vehicle hub motor as claimed in claim 1, wherein: and a third annular body (105) is arranged at one end of the inner side of the first annular body (101) in the circumferential direction, the third annular body (105) and the first annular body (101) are of an integral structure, and the thickness between the third inner side wall (106) and the first outer side wall (107) of the third annular body (105) is smaller than the thickness between the second inner side wall (202) and the second outer side wall (203) of the magnetic core (2).
3. The outer rotor of the electric vehicle hub motor as claimed in claim 1 or 2, wherein: the fixing block (104) is in a long strip shape, and the axis direction of the long strip shape is parallel to the axis direction of the outer rotor.
4. The outer rotor of the electric vehicle hub motor as claimed in claim 3, wherein: the radian among the adjacent fixed blocks (104) of the first inner side wall (108) of the first annular body (101) is equal.
5. The outer rotor of the electric vehicle hub motor as claimed in claim 4, wherein: the magnetic iron core (2) slot body (201) is arranged on one side opposite to a first inner side wall (108) of a first annular body (101), an opening (204) is formed in the slot body (201) opposite to the first annular body (101), the distance between the opening (204) in the slot body (201) is smaller than the distance between the maximum positions in the slot body (201), and the opposite position of the opening (204) of the slot body (201) of the magnetic iron core (2) is arc-shaped.
6. The outer rotor of the electric vehicle hub motor as claimed in claim 5, wherein: the magnetic conductive iron cores (2) are provided with buckling points (205), and the buckling points (205) between the upper and lower adjacent magnetic conductive iron cores (2) are in interference fit with each other.
7. The outer rotor of the electric vehicle hub motor as claimed in claim 6, wherein: the two sides of the magnetic conductive iron core (2) are arranged to be inclined by taking the central shaft (206) as a symmetry axis, and the two sides of the end surface of one side of the magnetic conductive iron core (2) far away from the opening (204) of the tank body (201) are provided with lugs (207) in the transverse direction.
8. The outer rotor of the electric vehicle hub motor as claimed in claim 3, wherein: the first annular body (101), the second annular body (102), the third annular body (105) and the fixed block (104) are arranged to be of an integral structure formed by non-magnetic materials.
9. The outer rotor of the electric vehicle hub motor as claimed in claim 3, wherein: the cross sections of the two second annular bodies (102) at the opposite positions are arranged in an inclined shape, and an inclined through hole (109) which penetrates through the third annular body (105) and the second annular body (102) is formed in the annular bodies.
10. The outer rotor of the electric vehicle hub motor as claimed in claim 9, wherein: grooves (110) are arranged on the side surfaces of two ends of the second annular body (102), reinforcing ribs (111) are arranged between the grooves (110), and fixing holes (112) are arranged on the reinforcing ribs (111).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010093513.7A CN111404297A (en) | 2020-02-14 | 2020-02-14 | Outer rotor of hub motor of electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010093513.7A CN111404297A (en) | 2020-02-14 | 2020-02-14 | Outer rotor of hub motor of electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111404297A true CN111404297A (en) | 2020-07-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010093513.7A Pending CN111404297A (en) | 2020-02-14 | 2020-02-14 | Outer rotor of hub motor of electric vehicle |
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| CN (1) | CN111404297A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112701822A (en) * | 2020-12-31 | 2021-04-23 | 上海雅迪信息技术有限公司 | In-wheel motor |
-
2020
- 2020-02-14 CN CN202010093513.7A patent/CN111404297A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112701822A (en) * | 2020-12-31 | 2021-04-23 | 上海雅迪信息技术有限公司 | In-wheel motor |
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