CN107947512A - A kind of In-wheel motor driving wheel - Google Patents
A kind of In-wheel motor driving wheel Download PDFInfo
- Publication number
- CN107947512A CN107947512A CN201711301991.7A CN201711301991A CN107947512A CN 107947512 A CN107947512 A CN 107947512A CN 201711301991 A CN201711301991 A CN 201711301991A CN 107947512 A CN107947512 A CN 107947512A
- Authority
- CN
- China
- Prior art keywords
- stator
- middle casing
- base
- stator axis
- ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
Landscapes
- 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 both sides；The outer end of left shell and right shell body is fixedly connected with middle casing respectively, and three forms the electric machine casing of boss shape, and tire is installed 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 both sides of supporting item；Left stator assembly includes first base, base spacing ring and spoke-like connector, right field frame assembly includes second base and loop connecting disk, the outer end of connector and terminal pad is equipped with the annular stator groove with stator axis concentric, two stator slots close to and live apart in the both sides of supporting item, 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 wheel, belong to electric car drive area.
Background technology
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 Main way of Chinese automobile technology development.In past 10 years, new-energy automobile subtracts to energy saving
Row's contribution is notable, and deteriorates with progressively ripe and the further of environmental problem of existing new-energy automobile key technology, people
The power conservation requirement of new-energy automobile is also stepped up, the differentiation of this point from national support policy has some idea of.For example, 2009
Year, entering initial stage in new-energy automobile industrialization epoch, mild hybrid electric vehicle can obtain public subsidies；2012, state
The energy-saving effect of family's policy requirements hybrid power passenger car, which have to be larger than 10%, to be subsidized；2014, Ministry of Industry and Information etc. five
Committee issues jointly《Strengthen the notice of passenger car enterprise average fuel consumption management》, it is desirable to domestic passenger car enterprise average fuel
Consumption realizes the target for being down to 6.9L/100km in 2015, and for enterprise not up to standard, before being also proposed five dynamics, institute is not
Some punitive actions, only realize that the target is difficult by traditional vehicle with hybrid vehicle, thus develop pure electric vehicle into
For the inevitable choice of China automotive enterprises, while new-energy automobile is also always the key support object of Chinese Government.
By development for many years, colleges and universities/scientific research institutions/enterprise is in critical component, vehicle integrates, demonstrating running etc. with
Two-wheeled centralized driving formula electric car is done a lot of work for object, and technology is progressively ripe, this also causes in assemblies such as motor, batteries
Under conditions of certain, its 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, vehicle transmission efficiency is improved from configuration aspects, second, from
Optimization vehicle drive efficiency in terms of full-vehicle control, third, 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, simplify chassis knot
Structure, possibility is provided 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 set are directly incorporated into by it
Inside wheel, limited space limit driving motor size, and then limit the driving force of motor, how to meet size
Its driving force is improved on 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 wheel 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, and burn-down of electrical machinery can be caused when serious.Therefore, how to ensure that volume and stator current are constant
Under the premise of, improving the power density of wheel hub motor and torque density becomes the key factor for influencing its performance.
The content of the invention
The purpose of the present invention is to solve the above problems, providing a kind of on the premise of ensureing that volume and stator current are constant
Improve the In-wheel motor driving wheel of wheel hub motor power density and torque density.Its technical solution is：
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 both 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 inner of left shell is through 2 angular contact balls into annular shape
Bearings are in stator axis, and the right side of left shell is equipped with the first locating ring and spacing ring successively, and the inner of wherein spacing ring leads to
Cross cylinder roller bearing to be supported in stator axis, contradicted on the right side of cylinder roller bearing with the convex shoulder in stator axis, the first locating ring
It is fixedly set in stator axis and is clamped between angular contact ball bearing and cylinder roller bearing, with the first locating ring stack pile
The second locating ring gap package be fixedly connected on the first locating ring, and with left shell and spacing ring through bolt；Left shell and
The outer end of right shell body is fixedly connected with middle casing respectively, and three forms the electric machine casing of boss shape, and tire is installed on centre
On the outer wall of housing；
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 item, 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 both sides of supporting item；
Field frame assembly includes left stator assembly and right field frame assembly, and left stator assembly includes being sleeved on the first bottom of stator axis
Seat, base spacing ring and spoke-like connector, first base and stator axis pass through key connection, and base spacing ring is fixedly mounted on the
The inner of one base, 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 and the loop connecting disk being fixedly set on second base outer end on axis, second base is with stator axis by key company
Connect；The outer end of spoke-like connector and terminal pad is equipped with the annular stator groove with stator axis concentric, two annular stator grooves
Close to and live apart in the both sides of supporting item, it is equal in two annular stator grooves and positioned at inner ring permanent magnet and outer ring permanent magnet between
The stator winding of narrow wide structure under cloth, it is uniformly distributed in two annular stator grooves under narrow wide structure stator winding quantity phase
Deng and it is opposite two-by-two；
Suspension joint arm is added, suspension joint arm is sleeved in stator axis and positioned at the outside of terminal pad, and is fixed with terminal pad
Connection.
Its operation principle is：When entire car controller judges that vehicle needs to enter drive pattern according to gas pedal aperture,
Control electric machine controller and inverter are passed through three-phase alternating current to stator winding, are respectively at this time N poles inside and outside stator winding
With S poles (or S poles and N poles), wherein, respectively on the outside of the stator winding with 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 produced, outer ring permanent magnet electromagnetic power pushes directly on middle casing rotation, inner ring
Permanent magnet electromagnetic power promotes middle casing to rotate by cylindrical base body and circular supporting item, and middle casing drives left shell and the right side
Housing, is rotated by two bearings around stator axis, so as to fulfill the rotation of wheel.
Stator winding is subject to the electromagnetic force of opposite direction at the same time, and left stator assembly electromagnetic force passes to by column connector
One base, 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 ensures that stationary part remains static.
Compared with prior art, the present invention it the advantage is that：
1st, by inside and outside two circle permanent magnets among set stator winding structure, can fully improve Energizing unit with forever
Magnetic force between magnets magnetic fields, in the case where volume and exciting current are constant, electromagnetic force is significantly increased, increase
Wheel hub motor power density, torque density；
2nd, middle casing uses the structure of both sides thickness intermediate thin, while ensureing load ability and mitigating weight, increase
Permanent magnet volume, so as to strengthen magnetic field intensity, so as to increase wheel hub motor power density and torque density, reduces wheel hub motor weight
Amount, and then reduce vehicle unsprung mass, improve vehicle ride comfort；
3rd, more connectors are installed radially the structure on the same circumference of first base in left stator assembly, are ensureing
On the premise of support strength, reduce weight, and then reduce vehicle unsprung mass, improve vehicle ride comfort.
Brief description of the drawings
Fig. 1 is the structure diagram of the embodiment of the present invention；
Fig. 2 is the A-A sectional views of embodiment illustrated in fig. 1；
Fig. 3 is the B-B sectional views of embodiment illustrated in fig. 1.
In figure：1st, tire 2, stator axis 3, middle casing 4, matrix 5, inner ring permanent magnet 6, outer ring permanent magnet 7, a left side
Housing 8, right shell body 9, angular contact ball bearing 10, the first locating ring 11, spacing ring 12, cylinder roller bearing 13, second
Locating ring 14, nut 15, supporting item 16, first base 17, base spacing ring 18, connector 19, key 20, stator slot
21st, second base 22, terminal pad 23, stator winding 24, suspension joint arm 25, bolt
Embodiment
Technical solution of the present invention is described further with reference to the accompanying drawings and embodiments.In the embodiment shown in Fig. 1-3
In：
Rotor assembly includes middle casing 3,4,2 groups of matrix, 5,2 groups of the inner ring permanent magnet outer ring permanent magnet 6 of tubular of tubular
And separation uses the structure of both sides thickness intermediate thin in the left shell 7 and right shell body 8 of 3 both sides of middle casing, middle casing 3.Its
In：Left shell 7 and right shell body 8 are sleeved on the both ends of stator axis 2, the inner of left shell 7 is through 2 angular contact balls into annular shape
Bearing 9 is supported in stator axis 2, and the right side of left shell 7 is equipped with the first locating ring 10 and spacing ring 11, wherein spacing ring 11 successively
The inner be supported on by cylinder roller bearing 12 in stator axis 2, the convex shoulder of the right side of cylinder roller bearing 12 and stator axis 2 supports
Touching, the first locating ring 10 is fixedly set in stator axis 2 and is clamped between angular contact ball bearing 9 and cylinder roller bearing 12,
13 gap package of the second locating ring with 10 stack pile of the first locating ring on the first locating ring 10, and with left shell 7 and spacing
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 forms wheel
The electric machine casing of hub shape, tire 1 are installed on the outer wall of middle casing 3；So both defined the axially position of electric machine casing,
It in turn ensure that the rotation that electric machine casing can be stablized around stator axis 2.4 diameter of matrix is less than middle casing 3, same with middle casing 3
Axes sleeve is fixedly connected, 2 groups of outer rings are forever in stator axis 2 between middle casing 3 and matrix 4 through circular supporting item 15
Magnet 6 and 2 groups of inner ring permanent magnets 5, which correspond to, to be fixed on middle casing 3 and the opposite side wall of matrix 4 and lives apart in supporting item
15 both sides.
Field frame assembly includes left stator assembly and right field frame assembly, and left stator assembly includes being sleeved on the first of stator axis 2
Base 16, base spacing ring 17 and spoke-like connector 18, first base 16 are connected with stator axis 2 by key 19, and base is spacing
Ring 17 is fixedly mounted on the inner 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 loop connecting being fixedly set on 21 outer end of second base
Disk 22, second base 21 are connected with stator axis 2 by key 19；The outer end of spoke-like connector 18 and terminal pad 22 is equipped with determining
The annular stator groove 20 of sub- 2 concentric of axis, two annular stator grooves 20 close to and live apart in the both sides of supporting item 15, and positioned at interior
Enclose between permanent magnet 5 and outer ring permanent magnet 6, the stator winding 23 of narrow wide structure counts under uniformly distributed in two annular stator grooves 20
Measure equal and opposite two-by-two.
Suspension joint arm 24 is sleeved in stator axis 2 and positioned at the outside of terminal pad 22, and is fixedly connected with terminal pad 22, is hanged
Frame joint arm 24 is connected by suspension with vehicle, finally ensures 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 uses both sides thickness intermediate thin in the left shell (7) and right shell body (8) of middle casing (3) both sides, middle casing (3)
Structure；
Left shell (7) and right shell body (8) are sleeved on the both ends of stator axis (2), the inner of left shell (7) is through 2 into annular shape
Angular contact ball bearing (9) is supported in stator axis (2), and the right side of left shell (7) is equipped with the first locating ring (10) and spacing successively
The inner of ring (11), wherein spacing ring (11) is supported in stator axis (2) by cylinder roller bearing (12), cylinder roller bearing
(12) right side is contradicted with the convex shoulder in stator axis (2), and the first locating ring (10) is fixedly set in stator axis (2) and is clamped in
Between angular contact ball bearing (9) and cylinder roller bearing (12), the second locating ring (13) with the first locating ring (10) stack pile
Gap package is fixedly connected on the first locating ring (10), and with left shell (7) and spacing ring (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 forms the electric machine casing of boss shape, tire
(1) 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 in stator axis (2), middle casing
(3) it is fixedly connected between matrix (4) through circular supporting item (15), 2 groups of outer ring permanent magnets (6) and 2 groups of inner ring permanent magnets
(5) it is corresponding to be fixed on middle casing (3) and the opposite side wall of matrix (4) and live apart in the both sides of supporting item (15)；
Field frame assembly includes left stator assembly and right field frame assembly, and left stator assembly includes being sleeved on the first bottom of stator axis (2)
Seat (16), base spacing ring (17) and spoke-like connector (18), first base (16) connect with stator axis (2) by key (19)
Connect, base spacing ring (17) is fixedly mounted on the inner of first base (16), and spoke-like connector (18) is fixedly set in first
On the outer end of base (16), right field frame assembly includes the second base (21) that is sleeved in stator axis (2) and is fixedly set in the
Loop connecting disk (22) on two bases (21) outer end, second base (21) are connected with stator axis (2) by key (19)；Spoke-like
The outer end of connector (18) and terminal pad (22) is equipped with and the annular stator groove (20) of stator axis (2) concentric, two ring-types
Stator slot (20) close to and live apart in the both sides of supporting item (15), and positioned at inner ring permanent magnet (5) and outer ring permanent magnet (6) it
Between, stator winding (23) quantity of narrow wide structure is equal and opposite two-by-two under uniformly distributed in two annular stator grooves (20)；
Suspension joint arm (24) is added, suspension joint arm (24) is sleeved in stator axis (2) and positioned 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 true CN107947512A (en) | 2018-04-20 |
| CN107947512B 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) |
Cited By (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 |
| CN112217367A (en) * | 2019-07-09 | 2021-01-12 | 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 |
Cited By (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 |
| CN112217367A (en) * | 2019-07-09 | 2021-01-12 | 大族激光科技产业集团股份有限公司 | Combined linear motor end cover |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107947512B (en) | 2019-10-08 |
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