CN108429421A - A kind of mixed excitation electric machine for new-energy automobile - Google Patents
A kind of mixed excitation electric machine for new-energy automobile Download PDFInfo
- Publication number
- CN108429421A CN108429421A CN201810529473.9A CN201810529473A CN108429421A CN 108429421 A CN108429421 A CN 108429421A CN 201810529473 A CN201810529473 A CN 201810529473A CN 108429421 A CN108429421 A CN 108429421A
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- Prior art keywords
- stator
- electric machine
- stator core
- new
- energy automobile
- 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.)
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Links
- 230000005284 excitation Effects 0.000 title claims abstract description 38
- 238000004804 winding Methods 0.000 claims abstract description 26
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 6
- 239000000696 magnetic material Substances 0.000 claims description 4
- 230000035699 permeability Effects 0.000 claims description 3
- 239000011162 core material Substances 0.000 description 45
- 230000001360 synchronised effect Effects 0.000 description 5
- 239000002131 composite material Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 235000000396 iron Nutrition 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
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
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
- H02K21/16—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having annular armature cores with salient poles
-
- 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
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K19/00—Synchronous motors or generators
- H02K19/02—Synchronous motors
- H02K19/10—Synchronous motors for multi-phase current
- H02K19/12—Synchronous motors for multi-phase current characterised by the arrangement of exciting windings, e.g. for self-excitation, compounding or pole-changing
-
- 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
- H02K21/02—Details
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Synchronous Machinery (AREA)
Abstract
The invention discloses a kind of mixed excitation electric machines for new-energy automobile, including casing and the rotor core and stator core that are set in casing, stator core is divide into upper part and lower part, three-phase windings carry out coiling by upper and lower stator core, and the magnetic conduction holder for being wound with DC excitation winding is arranged between upper and lower two parts stator core.The present invention is applied to the mixed excitation electric machine in new energy driving motor field, in addition to have the characteristics that it is mixed encourage electric machine speed regulation performance is good, anti-demagnetization capability is strong, stock utilization is high, it is efficient other than, the magnetic conduction holder being arranged on stator can effectively reduce the mixed complexity for encouraging motor stator structure, reduce stator core difficulty of processing；And magnetic conduction rack mechanical strength is better than stator core, can effectively reduce the risk that stator module is deformed in coiling three-phase windings；And when magnetic conduction holder outer diameter is more than stator outer diameter, the space of Exciting Windings for Transverse Differential Protection coiling can be effectively improved, to improve the ratio of electrical excitation.
Description
Technical field
The present invention relates to a kind of mixed excitation electric machine, more particularly to a kind of mixed excitation electric machine for new-energy automobile,
Belong to technical field of motors.
Background technology
Current new-energy automobile driving motor, generally three kinds of permanent magnet synchronous motor, asynchronous machine and switched reluctance machines.
Due to the use of the demand of environment, to the more demanding of automobile drive electric motor, it is big that driving motor needs to meet instantaneous power, overloads energy
Power is strong, and accelerating ability is good, and speed adjustable range is wide, automobile start high-torque and the demand run at high speed, and within the scope of whole service,
Efficiency optimization, to improve course continuation mileage, and service life is long, and power density is high, low noise.
Permanent magnet synchronous motor disclosure satisfy that the above-mentioned overwhelming majority requires, but since the excitation field of permanent magnet synchronous motor is
Permanent magnet, magnetic field of permanent magnet are difficult to change, and when low speed starts, torque causes motor feels hot big compared with high, electric current is big；In vapour
Complicated, weak magnetic energy force difference is controlled when vehicle high-speed cruising, makes that efficiency is low when high-speed cruising or speed reduces；And use rare-earth permanent magnet
Permanent magnet synchronous motor cost it is higher, there is permanent magnet demagnetization in when high temperature, reduce the reliability of product.
Axial/radial magnetic circuit mixed excitation synchronous motor can effectively solve the problem that the above problem, but the motor of the type is general
All it is directly to place Exciting Windings for Transverse Differential Protection again behind stator outer ring directly fluting.In order to increase the space of Exciting Windings for Transverse Differential Protection placement, fluting
Cross-sectional area needs sufficiently large.But it, can if the cross-sectional area of slot is excessive since stator core is formed by silicon steel plate stacking
Cause stator core intensity insufficient, when coiling three-phase windings, easily leads to iron core deformation；And the mixed excitation electric machine major diameter of the type
Than needing to be made smaller, i.e., motor be made " short and stout " some, if place Exciting Windings for Transverse Differential Protection slot open wide, motor can be made
It is axial to increase, it is unfavorable for playing the optkmal characteristics of the type motor.
Invention content
For the above-mentioned problems in the prior art, the present invention provides a kind of composite excitation electricity for new-energy automobile
Machine.
Technical scheme is as follows：
A kind of mixed excitation electric machine for new-energy automobile, including casing and the rotor core that is set in casing and
Stator core, the stator core are divide into upper part and lower part, and three-phase windings carry out coiling by upper and lower stator core, upper and lower two
Setting is wound with the magnetic conduction holder of DC excitation winding between partial stator iron core.
As a further improvement on the present invention, the internal diameter of the magnetic conduction holder is identical as stator slot bottom circular diameter.
As a further improvement on the present invention, the outer diameter of the magnetic conduction holder is equal to stator outer diameter.
As a further improvement on the present invention, the outer diameter of the magnetic conduction holder is more than stator outer diameter.
As a further improvement on the present invention, the stator core of two parts up and down after the completion of coiling is connected by stator magnetic guiding loop
It connects, stator magnetic guiding loop is assembled with casing, forms stator module.
As a further improvement on the present invention, the material of the casing is set as permeability magnetic material, direct with stator core
Assembly.
As a further improvement on the present invention, the stator core of two parts up and down after the completion of coiling is connected by stator magnetic guiding loop
It connects, stator magnetic guiding loop is divide into upper part and lower part to be assembled with stator core, and stator magnetic guiding loop is assembled with casing, forms stator module.
As a further improvement on the present invention, it is provided with the material annular consistent with stator magnetic guiding loop in the magnetic conduction holder
Magnetic guiding cycle.
As a further improvement on the present invention, the rotor is divide into upper part and lower part, be provided on rotor the poles N permanent magnet and
The poles S permanent magnet, the poles N permanent magnet and the poles S permanent magnet are respectively arranged at two parts up and down of rotor.
As a further improvement on the present invention, the iron core pole that the permanent magnet with rotor core of same polarity are formed is staggered.
Beneficial effects of the present invention are as follows：
The present invention mixed excitation electric machine one magnetic conduction holder is set in the stator, magnetic conduction rack inner wall coiling excitation around
Group can effectively reduce the mixed complexity for encouraging motor stator structure, reduce stator core difficulty of processing；Magnetic conduction rack mechanical strength is excellent
In stator core, the intensity of mixed excitation electric machine stator is effectively increased, can effectively reduce stator module in coiling three-phase windings
When the risk that deforms；When magnetic conduction holder outer diameter is more than stator outer diameter, the space of Exciting Windings for Transverse Differential Protection coiling can be effectively improved, to carry
The ratio of high electrical excitation；Stator split settings effectively reduce the difficulty of processing of stator core.
Description of the drawings
Fig. 1 is the structure sectional view of present invention when magnetic conduction holder outer diameter is identical as stator core outer diameter.
Fig. 2 is structure of the invention sectional view when magnetic conduction holder outer diameter is more than stator core outer diameter.
Fig. 3 is electric machine structure axonometric drawing of the present invention.
Fig. 4 is magnetic circuit figure when magnetic conduction holder outer diameter is equal to stator outer diameter.
Fig. 5 is magnetic circuit figure when magnetic conduction holder outer diameter is more than stator outer diameter.
It is marked in figure：1- bearings, 2- end caps, 3- casings, the poles 4-N permanent magnet, 5- Exciting Windings for Transverse Differential Protection, 6- magnetic conductions holder, 6-1-
Inner ring, 6-2- upper brackets, 6-3- lower brackets, 7- magnetic pole irons (N), 8- armature spindles, 9- magnetic pole irons (S), 10- three-phase alternating currents winding,
The poles 11-S permanent magnet, 12- stator cores, 13- stators magnetic guiding loop, 14, rotor core, 15- annular magnetic guiding cycles.
Specific implementation mode
Invention is further described in detail below in conjunction with the accompanying drawings.
The present invention provides a kind of mixed excitation electric machine applied to new energy driving motor field, and motor is encouraged in addition to having to mix
Outside good speed adjustment features, the feature that anti-demagnetization capability is strong, stock utilization is high, efficient, the magnetic conduction holder being arranged on stator can have
Effect reduces the mixed complexity for encouraging motor stator structure, reduces stator core difficulty of processing；And magnetic conduction rack mechanical strength is better than fixed
Sub- iron core can effectively reduce the risk that stator module is deformed in coiling three-phase windings；And when magnetic conduction holder outer diameter is more than stator
When outer diameter, the space of Exciting Windings for Transverse Differential Protection coiling can be effectively improved, to improve the ratio of electrical excitation.
Embodiment one
As shown in Figure 1, Figure 3, stator core 12 is divide into upper part and lower part, between upper and lower two parts stator core place around
There are the magnetic conduction holder 6 of DC excitation winding 5, three-phase windings 10 to carry out coiling by upper and lower iron core, pass through stator after the completion of coiling
Magnetic guiding loop 13 connects, and stator magnetic guiding loop 13 is assembled with casing 3, forms stator module.Correspondingly, rotor is also classified into two parts, the poles N
Permanent magnet 4 and the poles S permanent magnet 11 are individually positioned in two parts up and down of rotor, as a kind of preferred structure of the present embodiment, together
Rotor core pole (the magnetic pole iron (N) 7 for being overrided to form for punching, being integrated with rotor core 14 between the two panels permanent magnet of grade property
Or magnetic pole iron (S) 9), it can also be made of the preferable soft magnetic materials of magnetic property, i.e.,：The permanent magnet of same polarity is formed with iron core
Iron core pole 7 be staggered.It should be noted that the rotor structure in the present invention be not limited to the present embodiment in the example above,
Every stator core that can coordinate in the prior art in the present invention realizes the rotor structure of composite excitation function, should be included in this
Within the protection domain of invention.Rotor core 14 forms rotor assembly after being assembled with shaft 8,8 front and back ends of shaft are filled with bearing 1
It after matching, is put into the stator module assembled, after coordinating with end cap 2, is formed to mix and encourage motor.
In the present embodiment, the outer diameter of magnetic conduction holder 6 is equal with 12 outer diameter of stator core, as shown in Figure 1, stator magnetic guiding loop 13
It is assembled for cylindric entirety and stator core 12.Magnetic circuit principle is as shown in figure 4, when DC excitation winding 5 is powered, the magnetic of generation
It is logical to be introduced into 6 inner ring 6-1 of magnetic conduction holder and entered in stator magnetic guiding loop 13 by the teeth portion of stator core 12, yoke portion, then
By the yoke portion of stator core 12, teeth portion, 6 inner ring 6-1 of magnetic conduction holder is returned to, forms magnetic loop.One kind as the present embodiment
The internal diameter of preferred structure, magnetic conduction holder 6 is identical as stator slot bottom circular diameter.
In the present embodiment, i.e., when magnetic conduction holder outer diameter is identical as stator core outer diameter, stator magnetic guiding loop 13 can be cancelled, by machine
3 material of shell is set as permeability magnetic material, and casing 3 is made to play the role of axial magnetic conduction, is directly assembled with stator core.
Embodiment two
The mixed excitation electric machine structure and the structure of embodiment one of the present embodiment are essentially identical, and the main distinction is magnetic conduction branch
The outer diameter of frame 6 is more than 12 outer diameter of stator core.The main part just distinguished with embodiment one is described in detail below, other
Part repeats no more.
As shown in figures 2 and 5, the outer diameter of magnetic conduction holder 6 is more than 12 outer diameter of stator core, and an annular is placed in magnetic conduction holder 6
Magnetic guiding cycle 15, material are consistent with stator magnetic guiding loop 13.Stator magnetic guiding loop 13 is divide into upper part and lower part to be assembled with stator core 12, is made
The magnetic flux that generates of DC excitation winding 5, be introduced into 6 inner ring 6-1 of magnetic conduction holder, by the teeth portion of stator core 12, yoke portion,
It enters in stator magnetic guiding loop 13, after the upper bracket 6-2 (or lower bracket 6-3) of magnetic conduction holder 6, then passes through lower bracket
6-3 (or upper bracket 6-2) is entered in stator magnetic guiding loop 13, using the yoke portion of stator core 12, teeth portion, returns to magnetic conduction holder
6 inner ring 6-1 forms magnetic loop.
In the present embodiment, i.e., when magnetic conduction holder outer diameter is more than stator core outer diameter, annular magnetic guiding cycle 15 can be increased, placed
It is assembled into magnetic conduction holder 6, then with two-part magnetic guiding loop is divided into, is finally assembled with casing 3, can effectively improve Exciting Windings for Transverse Differential Protection
Coiling space, improve weak magnetic ability.
In conclusion the present invention proposes a kind of composite excitation driving motor for new-energy automobile, stator is in the axial direction
It is made of identical two parts, is the magnetic conduction holder for placing Exciting Windings for Transverse Differential Protection between upper and lower two parts stator, the machinery of magnetic conduction holder is strong
Degree is better than stator core material and has preferable magnetic property, and internal diameter is identical as stator core slot bottom circular diameter, and outer diameter can
According to the demand of Exciting Windings for Transverse Differential Protection, stator core outer diameter is set greater than or is equal to；Corresponding rotor is also divided into two in the axial direction
Point, the consistent poles permanent-magnet pole N of size, the poles S are individually positioned in upper and lower two parts of rotor, and are staggeredly placed radially, together
When, up and down on two-part rotor, it is staggeredly placed radially with permanent-magnet pole with permanent-magnet pole iron pole consistent in length.It is positioned over
Magnetic conduction holder among lower two parts stator, instead of the mode directly slotted among stator core, it is fixed to can effectively improve
Sub- intensity, and reduce the difficulty of processing of stator；When magnetic conduction holder outer diameter is identical as stator core outer diameter, stator magnetic guiding loop is one
Body forms to mix after directly assembling with casing after assembling with stator core and encourages motor；When the outer diameter of magnetic conduction holder is more than stator core
When outer diameter, magnetic guiding loop can be set in the axial direction upper and lower two parts, then be placed into casing after being assembled with stator core, it can
To effectively improve the coiling space of Exciting Windings for Transverse Differential Protection, the ratio of electrical excitation is improved.
Claims (10)
1. a kind of mixed excitation electric machine for new-energy automobile, including casing and the rotor core that is set in casing and fixed
Sub- iron core, it is characterised in that：The stator core is divide into upper part and lower part, three-phase windings by upper and lower stator core carry out around
The magnetic conduction holder for being wound with DC excitation winding is arranged in system between upper and lower two parts stator core.
2. a kind of mixed excitation electric machine for new-energy automobile according to claim 1, it is characterised in that：The magnetic conduction
The internal diameter of holder is identical as stator slot bottom circular diameter.
3. a kind of mixed excitation electric machine for new-energy automobile according to claim 1 or 2, it is characterised in that：It is described
The outer diameter of magnetic conduction holder is equal to stator outer diameter.
4. a kind of mixed excitation electric machine for new-energy automobile according to claim 1 or 2, it is characterised in that：It is described
The outer diameter of magnetic conduction holder is more than stator outer diameter.
5. a kind of mixed excitation electric machine for new-energy automobile according to claim 3, it is characterised in that：Coiling is completed
The stator core of two parts up and down afterwards is connected by stator magnetic guiding loop, and stator magnetic guiding loop is assembled with casing, forms stator module.
6. a kind of mixed excitation electric machine for new-energy automobile according to claim 3, it is characterised in that：The casing
Material be set as permeability magnetic material, directly assembled with stator core.
7. a kind of mixed excitation electric machine for new-energy automobile according to claim 4, it is characterised in that：Coiling is completed
The stator core of two parts up and down afterwards is connected by stator magnetic guiding loop, and stator magnetic guiding loop is divide into upper part and lower part to be filled with stator core
Match, stator magnetic guiding loop is assembled with casing, forms stator module.
8. a kind of mixed excitation electric machine for new-energy automobile according to claim 7, it is characterised in that：The magnetic conduction
The material annular magnetic guiding cycle consistent with stator magnetic guiding loop is provided in holder.
9. a kind of mixed excitation electric machine for new-energy automobile according to claim 1, it is characterised in that：The rotor
It is divide into upper part and lower part, the poles N permanent magnet and the poles S permanent magnet, the poles N permanent magnet and the poles S permanent magnet difference is provided on rotor
It is set to two parts up and down of rotor.
10. a kind of mixed excitation electric machine for new-energy automobile according to claim 9, it is characterised in that：Same polarity
The iron core pole that is formed with rotor core of permanent magnet be staggered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810529473.9A CN108429421B (en) | 2018-05-29 | 2018-05-29 | Mixed excitation motor for new energy automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810529473.9A CN108429421B (en) | 2018-05-29 | 2018-05-29 | Mixed excitation motor for new energy automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108429421A true CN108429421A (en) | 2018-08-21 |
| CN108429421B CN108429421B (en) | 2024-04-30 |
Family
ID=63164406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810529473.9A Active CN108429421B (en) | 2018-05-29 | 2018-05-29 | Mixed excitation motor for new energy automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108429421B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114465407A (en) * | 2022-03-29 | 2022-05-10 | 宁波朝一电子有限公司 | Novel fan motor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103703660A (en) * | 2010-12-21 | 2014-04-02 | 新特太奇公司 | Rotating electrical machine with so-called double homopolar structure |
| CN106655553A (en) * | 2017-03-15 | 2017-05-10 | 东南大学 | Motor with composite structure |
| CN106981937A (en) * | 2017-03-10 | 2017-07-25 | 东南大学 | A kind of rotor misconstruction motor |
| CN208174507U (en) * | 2018-05-29 | 2018-11-30 | 珠海格力电器股份有限公司 | A kind of mixed excitation electric machine for new-energy automobile |
-
2018
- 2018-05-29 CN CN201810529473.9A patent/CN108429421B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103703660A (en) * | 2010-12-21 | 2014-04-02 | 新特太奇公司 | Rotating electrical machine with so-called double homopolar structure |
| CN106981937A (en) * | 2017-03-10 | 2017-07-25 | 东南大学 | A kind of rotor misconstruction motor |
| CN106655553A (en) * | 2017-03-15 | 2017-05-10 | 东南大学 | Motor with composite structure |
| CN208174507U (en) * | 2018-05-29 | 2018-11-30 | 珠海格力电器股份有限公司 | A kind of mixed excitation electric machine for new-energy automobile |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114465407A (en) * | 2022-03-29 | 2022-05-10 | 宁波朝一电子有限公司 | Novel fan motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108429421B (en) | 2024-04-30 |
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