CN107947512B - A kind of In-wheel motor driving wheel - Google Patents
A kind of In-wheel motor driving wheel Download PDFInfo
- Publication number
- CN107947512B CN107947512B CN201711301991.7A CN201711301991A CN107947512B CN 107947512 B CN107947512 B CN 107947512B CN 201711301991 A CN201711301991 A CN 201711301991A CN 107947512 B CN107947512 B CN 107947512B
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- China
- Prior art keywords
- stator
- middle casing
- stator axis
- ring permanent
- groups
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/22—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
-
- 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
-
- 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
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The present invention provides a kind of In-wheel motor driving wheel, it is characterized in that: rotor assembly includes the left shell and right shell body of the middle casing of tubular, the matrix of tubular, 2 groups of inner ring permanent magnets, 2 groups of outer ring permanent magnets and separation in middle casing two sides；The outer end of left shell and right shell body is fixedly connected with middle casing respectively, and three constitutes the electric machine casing of boss shape, and tire is mounted on the outer wall of middle casing；2 groups of outer ring permanent magnets and 2 groups of inner ring permanent magnets, which correspond to, to be fixed on middle casing and the opposite side wall of matrix and lives apart in the two sides of supporting element；Left stator assembly includes first base, pedestal stop collar and spoke-like connector, right field frame assembly includes second base and terminal pad, the outer end of connector and terminal pad is equipped with the annular stator slot with stator axis concentric, two stator slots close to and live apart in the two sides of supporting element, and between inner ring permanent magnet and outer ring permanent magnet, uniformly distributed stator winding quantity is equal and opposite two-by-two in two stator slots.
Description
Technical field
The present invention relates to a kind of In-wheel motor driving wheels, belong to electric vehicle drive area.
Background technique
With increasing year by year for China's automobile guarantee-quantity and becoming increasingly conspicuous for energy security and problem of environmental pollution seriousness,
New-energy automobile has become one of the Main way of Chinese automobile technology development.In past 10 years, new-energy automobile subtracts energy conservation
Row's contribution is significant, and with gradually mature and environmental problem the further deterioration of existing new-energy automobile key technology, people
The power conservation requirement of new-energy automobile is also stepped up, this point has some idea of from the differentiation of national support policy.For example, 2009
Year, entering new-energy automobile industrialization initial stage in epoch, mild hybrid electric vehicle can be obtained public subsidies；2012, state
The energy-saving effect of family's policy requirements hybrid power passenger car, which has to be larger than 10%, to be subsidized；2014, Ministry of Industry and Information etc. five
Committee issues " notice for reinforcing the average fuel consumption management of passenger car enterprise " jointly, it is desirable that domestic passenger car enterprise average fuel
Consumption, which is realized, is down to the target of 6.9L/100km for 2015, and for enterprise not up to standard, before being also proposed five dynamics, institute is not
Some punitive actions only with hybrid vehicle realize that the target is difficult by traditional vehicle, thus development pure electric vehicle at
For the inevitable choice of China automotive enterprises, while new-energy automobile is also always the key support object of Chinese Government.
By the development of many years, colleges and universities/scientific research institutions/enterprise is in critical component, vehicle is integrated, in terms of with
Two-wheeled centralized driving formula electric vehicle is done a lot of work for object, and technology is gradually mature, this also causes in assemblies such as motor, batteries
Under conditions of certain, vehicle economy is basicly stable, and room for promotion is little.Whole electric vehicle economy is improved, except raising
Outside the efficiency characteristic of existing assembly, mainly there are following three kinds of approach: first is that vehicle transmission efficiency is improved from configuration aspects, second is that from
Optimize vehicle drive efficiency in terms of full-vehicle control, third is that optimization vehicle Brake energy recovery rate.Hub-type independent drive electric vehicle
Because eliminating the transmission parts such as speed changer, clutch, differential mechanism, semiaxis, and vehicle transmission efficiency is improved, simplifies chassis knot
Structure provides possibility for above-mentioned three energy saving ways, becomes one of the important directions of new-energy automobile development.
In-wheel motor driving wheel is the core assembly of hub-type independent drive electric vehicle, and power device is directly integrated by it
Inside wheel, limited space limit driving motor size, and then limit the driving capability of motor, how to meet size
Its driving capability is improved under the premise of it is required that becomes the key for influencing its performance.The size of In-wheel motor driving power and rotor field
There is direct relation with the size of stator field, rotor field and stator field are bigger, and the driving force of hub motor is bigger.From theory
On say, although can increase the magnetic field of stator coil winding by increasing stator current, after input current increase, motor is produced
Raw heat can also increase therewith, will lead to motor when serious and burn.Therefore, how to guarantee that volume and stator current are constant
Under the premise of, the power density and torque density for improving hub motor become the key factor for influencing its performance.
Summary of the invention
The purpose of the present invention is to solve the above problems, providing a kind of under the premise of guaranteeing volume and constant stator current
Improve the In-wheel motor driving wheel of hub motor power density and torque density.Its technical solution are as follows:
A kind of In-wheel motor driving wheel, including tire, stator axis, rotor assembly and field frame assembly, it is characterised in that: rotor
Assembly includes the middle casing of tubular, the matrix of tubular, 2 groups of inner ring permanent magnets, 2 groups of outer ring permanent magnets and separation in middle case
The left shell and right shell body of body two sides, middle casing use the structure of both sides thickness intermediate thin；
Left shell and right shell body are sleeved on the both ends of stator axis, the angular contact ball of inner end 2 of left shell at annular shape
Bearing support is successively arranged the first positioning ring and stop collar in stator axis, on the right side of left shell, and wherein the inner end of stop collar is logical
It crosses cylinder roller bearing to be supported in stator axis, be contradicted on the right side of cylinder roller bearing with the convex shoulder in stator axis, the first positioning ring
It is fixedly set in stator axis and is clamped between angular contact ball bearing and cylinder roller bearing, with the first positioning ring stack pile
The second positioning ring gap package be fixedly connected on the first positioning ring, and with left shell and stop collar through bolt；Left shell and
The outer end of right shell body is fixedly connected with middle casing respectively, and three constitutes the electric machine casing of boss shape, and tire is mounted on centre
On the outer wall of shell；
Base diameter is less than middle casing, and middle casing is concentric is sleeved in stator axis, middle casing and matrix it
Between be fixedly connected through circular supporting element, 2 groups of outer ring permanent magnets and 2 groups of inner ring permanent magnets it is corresponding be fixed on middle casing with
On the opposite side wall of matrix and separation is in the two sides of supporting element；
Field frame assembly includes left stator assembly and right field frame assembly, and left stator assembly includes the first bottom for being sleeved on stator axis
By being keyed, pedestal stop collar is fixedly mounted on for seat, pedestal stop collar and spoke-like connector, first base and stator axis
The inner end of one pedestal, spoke-like connector are fixedly set on the outer end of first base, and right field frame assembly includes being sleeved on stator
Second base on axis and the terminal pad being fixedly set on second base outer end, second base and stator axis are by being keyed；
The outer end of spoke-like connector and terminal pad is equipped with the annular stator slot with stator axis concentric, two annular stator slots close to
And live apart in the two sides of supporting element, and between inner ring permanent magnet and outer ring permanent magnet, it is uniformly distributed in two annular stator slots
Under narrow wide structure stator winding, it is uniformly distributed in two annular stator slots under narrow wide structure stator winding quantity it is equal and
It is opposite two-by-two；
Suspension joint arm is added, suspension joint arm is sleeved on the outside in stator axis and being located at terminal pad, and fixes with terminal pad
Connection.
Its working principle is that: when entire car controller judges that vehicle needs to enter drive mode according to gas pedal aperture,
It controls electric machine controller and inverter and is passed through three-phase alternating current to stator winding, be at this time respectively the pole N inside and outside stator winding
With the pole S (or the pole S and the pole N), wherein respectively on the outside of the stator winding on the inside of outer ring permanent magnet and stator winding with inner ring permanent magnetism
Under the interaction of body, equidirectional two electromagnetic forces are generated, outer ring permanent magnet electromagnetic power pushes directly on middle casing rotation, inner ring
Permanent magnet electromagnetic power pushes middle casing rotation by cylindrical base body and circular supporting element, and middle casing drives left shell and the right side
Shell is rotated by two bearings around stator axis, to realize the rotation of wheel.
Stator winding electromagnetic force by opposite direction simultaneously, left stator assembly electromagnetic force pass to the by column connector
One pedestal, then stator axis is passed to by key；Right field frame assembly electromagnetic force passes to second base by terminal pad, then passes through key
Pass to stator axis.Suspension joint arm is connected by suspension with vehicle, finally guarantees that stationary part remains static.
Compared with prior art, the present invention the advantage is that:
1, by it is inside and outside two circle permanent magnet among be arranged stator winding structure, can sufficiently improve Energizing unit with forever
Magnetic force between magnets magnetic fields, in the case where volume and constant exciting current, electromagnetic force is significantly increased, and is increased
Hub motor power density, torque density；
2, middle casing uses the structure of both sides thickness intermediate thin, while guaranteeing load ability and mitigating weight, increases
Permanent magnet volume, to increase hub motor power density and torque density, reduces hub motor weight to enhance magnetic field strength
Amount, and then reduce vehicle unsprung mass, improve vehicle ride comfort；
3, more connectors are installed radially the structure on the same circumference of first base in left stator assembly, are guaranteeing
Under the premise of support strength, reduces weight, and then reduce vehicle unsprung mass, improve vehicle ride comfort.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention；
Fig. 2 is the A-A cross-sectional view of embodiment illustrated in fig. 1；
Fig. 3 is the B-B cross-sectional view of embodiment illustrated in fig. 1.
In figure: 1, tire 2, stator axis 3, middle casing 4, matrix 5, inner ring permanent magnet 6, outer ring permanent magnet 7, a left side
Shell 8, right shell body 9, angular contact ball bearing 10, the first positioning ring 11, stop collar 12, cylinder roller bearing 13, second
Positioning ring 14, nut 15, supporting element 16, first base 17, pedestal stop collar 18, connector 19, key 20, stator slot
21, second base 22, terminal pad 23, stator winding 24, suspension joint arm 25, bolt
Specific embodiment
Technical solution of the present invention is described further with reference to the accompanying drawings and embodiments.The embodiment shown in Fig. 1-3
In:
Rotor assembly includes 4,2 groups of matrix, 5,2 groups of the inner ring permanent magnet outer ring permanent magnet 6 of the middle casing 3 of tubular, tubular
And separation, in the left shell 7 and right shell body 8 of 3 two sides of middle casing, middle casing 3 uses the structure of both sides thickness intermediate thin.Its
In: left shell 7 and right shell body 8 are sleeved on the both ends of stator axis 2, the angular contact ball of inner end 2 of left shell 7 at annular shape
Bearing 9 is supported in stator axis 2, and the right side of left shell 7 is successively arranged the first positioning ring 10 and stop collar 11, wherein stop collar 11
Inner end be supported in stator axis 2 by cylinder roller bearing 12,12 right side of cylinder roller bearing and the convex shoulder of stator axis 2 support
Touching, the first positioning ring 10 are fixedly set in stator axis 2 and are clamped between angular contact ball bearing 9 and cylinder roller bearing 12,
13 gap package of the second positioning ring with 10 stack pile of the first positioning ring on the first positioning ring 10, and with left shell 7 and limit
Ring 11 is fixedly connected through bolt 25；The outer end of left shell 7 and right shell body 8 is fixedly connected with middle casing 3 respectively, and three constitutes wheel
The electric machine casing of hub shape, tire 1 are mounted on the outer wall of middle casing 3；The axially position of electric machine casing had both been defined in this way,
In turn ensure the rotation that electric machine casing can be stable around stator axis 2.4 diameter of matrix is less than middle casing 3, same with middle casing 3
Axes sleeve is fixedly connected between middle casing 3 and matrix 4 through circular supporting element 15,2 groups of outer rings are forever in stator axis 2
Magnet 6 and 2 group inner ring permanent magnet 5 is corresponding to be fixed on middle casing 3 and the opposite side wall of matrix 4 and lives apart in supporting element
15 two sides.
Field frame assembly includes left stator assembly and right field frame assembly, and left stator assembly includes be sleeved on stator axis 2 first
Pedestal 16, pedestal stop collar 17 and spoke-like connector 18, first base 16 are connect with stator axis 2 by key 19, pedestal limit
Ring 17 is fixedly mounted on the inner end of first base 16, and spoke-like connector 18 is fixedly set on the outer end of first base 16, right
Field frame assembly includes the second base 21 being sleeved in stator axis 2 and the terminal pad that is fixedly set on 21 outer end of second base
22, second base 21 is connect with stator axis 2 by key 19；The outer end of spoke-like connector 18 and terminal pad 22 is equipped with and stator
The annular stator slot 20 of 2 concentric of axis, two annular stator slots 20 close to and live apart in the two sides of supporting element 15, and be located at inner ring
Between permanent magnet 5 and outer ring permanent magnet 6,23 quantity of stator winding of narrow wide structure under uniformly distributed in two annular stator slots 20
It is equal and opposite two-by-two.
Suspension joint arm 24 is sleeved on the outside in stator axis 2 and being located at terminal pad 22, and is fixedly connected with terminal pad 22, hangs
Frame joint arm 24 is connected by suspension with vehicle, finally guarantees that stationary part remains static.
Claims (1)
1. a kind of In-wheel motor driving wheel, including tire (1), stator axis (2), rotor assembly and field frame assembly, it is characterised in that:
Rotor assembly includes the middle casing (3) of tubular, the matrix (4) of tubular, 2 groups of inner ring permanent magnets (5), 2 groups of outer ring permanent magnets (6)
And separation, in the left shell (7) and right shell body (8) of middle casing (3) two sides, middle casing (3) is using both sides thickness intermediate thin
Structure；
Left shell (7) and right shell body (8) are sleeved on the both ends of stator axis (2), the inner end of left shell (7) 2 at annular shape
Angular contact ball bearing (9) is supported on stator axis (2), and the first positioning ring (10) and limit are successively arranged on the right side of left shell (7)
Ring (11), wherein the inner end of stop collar (11) is supported on stator axis (2) by cylinder roller bearing (12), cylinder roller bearing
(12) right side is contradicted with the convex shoulder on stator axis (2), and the first positioning ring (10) is fixedly set on stator axis (2) and is clamped in
The second positioning ring (13) between angular contact ball bearing (9) and cylinder roller bearing (12), with the first positioning ring (10) stack pile
Gap package is fixedly connected on the first positioning ring (10), and with left shell (7) and stop collar (11) through bolt (25)；Left shell
(7) it is fixedly connected respectively with middle casing (3) with the outer end of right shell body (8), three constitutes the electric machine casing of boss shape, tire
(1) it is mounted on the outer wall of middle casing (3)；
Matrix (4) diameter is less than middle casing (3), and middle casing (3) is concentric is sleeved on stator axis (2), middle casing
(3) it is fixedly connected between matrix (4) through circular supporting element (15), 2 groups of outer ring permanent magnets (6) and 2 groups of inner ring permanent magnets
(5) corresponding to be fixed on middle casing (3) and matrix (4) opposite side wall and live apart in the two sides of supporting element (15)；
Field frame assembly includes left stator assembly and right field frame assembly, and left stator assembly includes the first bottom for being sleeved on stator axis (2)
Seat (16), pedestal stop collar (17) and spoke-like connector (18), first base (16) and stator axis (2) connect by key (19)
It connects, pedestal stop collar (17) is fixedly mounted on the inner end of first base (16), and spoke-like connector (18) is fixedly set in first
On the outer end of pedestal (16), right field frame assembly includes the second base (21) that is sleeved on stator axis (2) and is fixedly set in the
Terminal pad (22) on two pedestals (21) outer end, second base (21) are connect with stator axis (2) by key (19)；Spoke-like connection
The outer end of part (18) and terminal pad (22) is equipped with and the annular stator slot (20) of stator axis (2) concentric, two annular stators
Slot (20) close to and live apart in the two sides of supporting element (15), and between inner ring permanent magnet (5) and outer ring permanent magnet (6), two
In a annular stator slot (20) it is uniformly distributed under narrow wide structure stator winding (23) quantity it is equal and opposite two-by-two；
It adds suspension joint arm (24), suspension joint arm (24) is sleeved on stator axis (2) and is located at the outside of terminal pad (22), and with
Terminal pad (22) is fixedly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711301991.7A CN107947512B (en) | 2017-12-10 | 2017-12-10 | A kind of In-wheel motor driving wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711301991.7A CN107947512B (en) | 2017-12-10 | 2017-12-10 | A kind of In-wheel motor driving wheel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107947512A CN107947512A (en) | 2018-04-20 |
| CN107947512B true CN107947512B (en) | 2019-10-08 |
Family
ID=61945396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711301991.7A Active CN107947512B (en) | 2017-12-10 | 2017-12-10 | A kind of In-wheel motor driving wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107947512B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109291783A (en) * | 2018-08-30 | 2019-02-01 | 宁波史河机器人科技有限公司 | A kind of climbing robot |
| CN112217367B (en) * | 2019-07-09 | 2022-07-19 | 大族激光科技产业集团股份有限公司 | Combined linear motor end cover |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5798887A (en) * | 1994-09-30 | 1998-08-25 | Fujitsu Limited | Apparatus for absorbing stator vibrations in computer storage apparatus |
| CN202014158U (en) * | 2011-03-16 | 2011-10-19 | 潍坊帅克新能源汽车技术有限公司 | Disk type motor hub assembly of electric automobile |
-
2017
- 2017-12-10 CN CN201711301991.7A patent/CN107947512B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5798887A (en) * | 1994-09-30 | 1998-08-25 | Fujitsu Limited | Apparatus for absorbing stator vibrations in computer storage apparatus |
| CN202014158U (en) * | 2011-03-16 | 2011-10-19 | 潍坊帅克新能源汽车技术有限公司 | Disk type motor hub assembly of electric automobile |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107947512A (en) | 2018-04-20 |
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