CN218162179U

CN218162179U - Double-stator permanent magnet synchronous motor of new energy automobile

Info

Publication number: CN218162179U
Application number: CN202221992162.4U
Authority: CN
Inventors: 吴文叶; 华俊; 张传杨; 朱俊骥; 张以龙
Original assignee: Wuxi Hslt Electric Drive System Co ltd
Current assignee: Wuxi Hslt Electric Drive System Co ltd
Priority date: 2022-07-28
Filing date: 2022-07-28
Publication date: 2022-12-27
Anticipated expiration: 2032-07-28

Abstract

The utility model discloses a two stator PMSM of new energy automobile, including outer stator silicon steel sheet, outer stator groove, outer stator winding, outer stator tooth, V type magnetism isolation groove, a style of calligraphy magnet steel, interior stator tooth, interior stator groove, interior stator winding, outer air gap, inlayer air gap and interior stator body, the inside outer stator groove that is provided with of outer stator silicon steel sheet, the inside outer stator winding that is provided with of outer stator groove the inside outer stator tooth that is provided with of outer stator silicon steel sheet, the inside V type magnetism isolation groove of having seted up of outer stator silicon steel sheet, the inside style of calligraphy magnet steel that is provided with of outer stator silicon steel sheet. The utility model discloses an outer stator silicon steel sheet, outer stator winding, a style of calligraphy magnet steel, inner stator groove, inner stator winding and inner stator body; the hybrid power vehicle has the advantages that the independent work of the inner motor and the outer motor is realized, the hybrid power vehicle is suitable for occasions with different torque outputs, the working flexibility of the motors is improved, and the hybrid power vehicle is favorably used.

Description

Double-stator permanent magnet synchronous motor of new energy automobile

Technical Field

The utility model relates to a two stator permanent magnet electricity technical field, concretely relates to two stator PMSM of new energy automobile.

Background

The double-stator permanent magnet synchronous motor of the new energy automobile is provided with an inner motor and an outer motor which can work independently, is suitable for occasions with different torque outputs, increases the working flexibility of the motors and is beneficial to the use of hybrid electric vehicles; the novel energy automobile motor adopts an inner-outer double-stator motor structure, so that the novel energy automobile motor effectively improves the permanent magnetic circuit of the motor through an inner-outer air gap, and greatly reduces the external magnetic flux leakage and the interpolar magnetic flux leakage of the novel energy automobile motor, thereby increasing the permanent magnet utilization rate of the motor; the invention adopts a double-stator structure, the stators of the inner motor and the outer motor are both provided with a set of windings, only the middle rotor is used as a rotating part, the capacity distribution form of the motor is improved, and when the inner motor and the outer motor work simultaneously, the armature magnetic density of the motor is increased, which is beneficial to increasing the torque output of the motor.

With the increasing problem of environmental pollution, new energy vehicles powered by clean energy have been developed rapidly. The new energy automobile is widely applied by the advantages of high energy conversion efficiency, no waste pollution emission, convenient operation and the like. In order to meet the use requirements of climbing, heavy load and the like of the electric automobile, a driving motor needs larger torque output. At present, in the traditional industrial occasions requiring low speed and large torque, a speed change mode combining a motor and a mechanical gear box is adopted in most occasions, the output rotating speed of the motor is reduced through a mechanical gear, the torque output is improved, and the requirements of the low speed and large torque of a power system can be met to a certain extent.

The existing double-stator permanent magnet synchronous motor is not suitable for occasions with different torque outputs, reduces the working flexibility of the motor and is not beneficial to a hybrid electric vehicle, for example, a double-stator permanent magnet synchronous motor disclosed in the publication No. CN202111115329.9 comprises: the device comprises a base, a sleeve, a fixed shaft and a rotating shaft. The engine base is of a cylindrical structure, an outer stator is fixedly mounted on the inner side of the engine base, and supporting flanges are arranged at two axial ends of the engine base; the sleeve is sleeved outside the base and is connected with the two supporting flanges; a closed annular cavity is formed between the sleeve and the base in an enclosing manner and is used for containing cooling liquid; one end of the fixed shaft is fixedly connected with the base, and the other end of the fixed shaft extends into the base; the fixed shaft is fixedly provided with an inner stator, and a first cooling cavity is arranged inside the fixed shaft; the rotating shaft is rotatably arranged on the base; one end of the rotating shaft is rotatably connected with the fixed shaft, the other end of the rotating shaft extends to the outside of the machine base, a rotor is fixedly mounted on the rotating shaft, and a second cooling cavity is arranged in the rotating shaft. The double-stator permanent magnet synchronous motor provided by the invention can meet the heat dissipation index and the weight index and meet the actual use requirement.

Therefore, the invention discloses a double-stator permanent magnet synchronous motor of a new energy automobile, which solves the problems that the double-stator permanent magnet synchronous motor is not suitable for occasions with different torque outputs, the working flexibility of the motor is reduced, and the double-stator permanent magnet synchronous motor is not suitable for a hybrid electric vehicle.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a two stator PMSM of new energy automobile to be not suitable for the occasion of different torque output in the solution technique, reduced the flexibility ratio of motor work, be unfavorable for the problem that hybrid vehicle used.

In order to achieve the above object, the present invention provides the following technical solutions: a double-stator permanent magnet synchronous motor of a new energy automobile comprises an outer stator silicon steel sheet, an outer stator groove, an outer stator winding, outer stator teeth, a V-shaped magnetism isolating groove, linear magnetic steel, inner stator teeth, an inner stator groove, an inner stator winding, an outer air gap, an inner air gap and an inner stator body, wherein the outer stator groove is arranged inside the outer stator silicon steel sheet, the outer stator winding is arranged inside the outer stator groove, the outer stator teeth are arranged inside the outer stator silicon steel sheet, the V-shaped magnetism isolating groove is formed inside the outer stator silicon steel sheet, the linear magnetic steel is arranged inside the outer stator silicon steel sheet, the outer air gap is formed outside the linear magnetic steel, the inner air gap is formed inside the linear magnetic steel, the inner stator teeth are arranged inside the inner stator body, the inner stator groove is formed in the outer surface of the inner stator body, and the inner stator winding is arranged inside the inner stator groove.

Preferably, the outer stator slots are connected with the outer air gap, and the outer stator slots are in a position relation with the outer air gap.

Preferably, the V-shaped magnetism isolating groove is positioned between the outer layer air gap and the inner layer air gap and in a position relation with the outer layer air gap and the inner layer air gap.

Preferably, two V-shaped magnetism isolating grooves are formed in the same linear magnetic steel and are symmetrical, and two V-shaped magnetism isolating grooves are formed in the same linear magnetic steel.

Preferably, the linear magnetic steel is provided with ten linear magnetic steels, every two linear magnetic steels are in a group, and five groups of linear magnetic steels are symmetrical and are in the same number.

Preferably, V-shaped magnetism isolating grooves are formed in two sides of the linear magnetic steel, and the linear magnetic steel and the V-shaped magnetism isolating grooves are in a position relation.

Preferably, the inner stator slot is connected with the inner layer air gap, and the inner stator slot is in a position relation with the inner layer air gap.

In the technical scheme, the utility model provides a technological effect and advantage: the technical effect is that the outer stator silicon steel sheet, the outer stator winding, the linear magnetic steel, the inner stator slot, the inner stator winding and the inner stator body; the hybrid power vehicle has the advantages that the independent work of the inner motor and the outer motor is realized, the hybrid power vehicle is suitable for occasions with different torque outputs, the work flexibility of the motors is improved, and the hybrid power vehicle is favorably used.

The utility model provides a technical advantage, the inside and outside double stator motor structure of adoption is invented to the invention for new energy automobile motor effectively improves motor permanent magnetism magnetic circuit through inside and outside two-layer air gap, very big reduction this new energy automobile motor's outside magnetic leakage and interelectrode magnetic leakage, thereby increased the permanent magnetism utilization ratio of motor.

The utility model provides a technical advantage, the invention adopts two stator structures, all has one set of winding on the interior outer motor stator, and only interrotor has improved the ability distribution form of motor as rotary part, and interior outer motor during operation has increased the armature magnetic density of motor simultaneously, is favorable to increasing motor torque output.

Drawings

Fig. 1 is a cross-sectional view of the linear magnetic steel of the utility model.

Description of the reference numerals:

1. an outer stator silicon steel sheet; 2. an outer stator slot; 3. an outer stator winding; 4. an outer stator tooth; 5. a V-shaped magnetism isolating groove; 6. a linear magnetic steel; 7. inner stator teeth; 8. an inner stator slot; 9. an inner stator winding; 10. an outer air gap; 11. an inner layer air gap; 12. inner stator body

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the attached drawings.

The utility model provides a two stator permanent magnet synchronous motor of new energy automobile as shown in figure 1, including outer stator silicon steel sheet 1, outer stator slot 2, outer stator winding 3, outer stator tooth 4, V type magnetism isolation groove 5, a style of calligraphy magnet steel 6, inner stator tooth 7, inner stator slot 8, inner stator winding 9, outer air gap 10, inlayer air gap 11 and inner stator body 12, outer stator slot 2 is provided with to outer stator silicon steel sheet 1 inside, outer stator slot 2 is inside to be provided with outer stator winding 3 outer stator silicon steel sheet 1 inside is provided with outer stator tooth 4, V type magnetism isolation groove 5 has been seted up to outer stator silicon steel sheet 1 inside, outer stator silicon steel sheet 1 inside is provided with a style of calligraphy magnet steel 6, outer air gap 10 has been seted up in the 6 outside of a style of calligraphy magnet steel, inlayer air gap 11 has been seted up to a style of calligraphy magnet steel 6 inboard, outer stator sheet 1 inside is provided with stator inner tooth 7, inner stator tooth 7 inside is provided with inner stator body 12, inner stator body 12 has been seted up to inner stator body 12 surface, inner stator slot 8 inside is provided with inner stator winding 8.

The outer stator slot 2 is connected with the outer air gap 10, the V-shaped magnetism isolating slot 5 is located between the outer air gap 10 and the inner air gap 11, the V-shaped magnetism isolating slot 5 is located on the same linear magnetic steel 6 and is provided with two, the two V-shaped magnetism isolating slots 5 are symmetrical, the linear magnetic steel 6 is provided with ten, every two of the ten linear magnetic steels 6 form a group, the five groups of the linear magnetic steels 6 are symmetrical, the V-shaped magnetism isolating slots 5 are arranged on two sides of the linear magnetic steel 6, and the inner stator slot 8 is connected with the inner air gap 11.

This practical theory of operation:

referring to the attached figure 1 of the specification, when the device is used, an outer stator silicon steel sheet 1, an outer stator groove 2 and an outer stator winding 3 of the double-stator permanent magnet synchronous motor are used for winding copper wires, an inner stator groove 8 and an inner stator winding 9 are used for winding copper wires, and the double-stator permanent magnet synchronous motor is distributed with the outer stator silicon steel sheet 1, the outer stator winding 3, outer stator teeth 4, linear magnetic steel 6, inner stator teeth 7, the inner stator winding 9 and an inner stator body 12, so that a high-speed light-load working condition is achieved, and the inner motor works; under the medium-speed and medium-load working condition, the outer motor works; under the low-speed heavy-load working condition, the inner motor and the outer motor work simultaneously, the inner motor and the outer motor can work independently, the motor is suitable for occasions with different torque outputs, the working flexibility of the motor is improved, and the hybrid electric vehicle is favorably used; the novel energy automobile motor adopts an inner and outer double-stator motor structure, so that the permanent magnet magnetic circuit of the motor is effectively improved through an inner and outer air gap, the external magnetic flux leakage and the interelectrode magnetic flux leakage of the novel energy automobile motor are greatly reduced, and the permanent magnet utilization rate of the motor is increased; the invention adopts a double-stator structure, the stators of the inner motor and the outer motor are both provided with a set of windings, only the middle rotor is used as a rotating part, the capacity distribution form of the motor is improved, and when the inner motor and the outer motor work simultaneously, the armature magnetic density of the motor is increased, which is beneficial to increasing the torque output of the motor.

Claims

1. The utility model provides a two stator PMSM of new energy automobile, includes outer stator silicon steel sheet (1), outer stator groove (2), outer stator winding (3), outer stator tooth (4), V type magnetism isolation groove (5), style of calligraphy magnet steel (6), inner stator tooth (7), inner stator groove (8), inner stator winding (9), outer air gap (10), inlayer air gap (11) and inner stator body (12), its characterized in that: the improved motor stator structure is characterized in that an outer stator groove (2) is formed in an outer stator silicon steel sheet (1), an outer stator winding (3) is arranged in the outer stator groove (2), outer stator teeth (4) are arranged in the outer stator silicon steel sheet (1), a V-shaped magnetism isolating groove (5) is formed in the outer stator silicon steel sheet (1), a linear magnetic steel (6) is arranged in the outer stator silicon steel sheet (1), an outer air gap (10) is formed in the outer side of the linear magnetic steel (6), an inner air gap (11) is formed in the inner side of the linear magnetic steel (6), inner stator teeth (7) are arranged in the outer stator silicon steel sheet (1), an inner stator body (12) is arranged in the inner stator teeth (7), an inner stator groove (8) is formed in the outer surface of the inner stator body (12), and an inner stator winding (9) is arranged in the inner stator groove (8).

2. The double-stator permanent magnet synchronous motor of the new energy automobile according to claim 1, characterized in that: the outer stator slots (2) are connected with an outer air gap (10).

3. The double-stator permanent magnet synchronous motor of the new energy automobile according to claim 1, characterized in that: the V-shaped magnetic isolation groove (5) is positioned between the outer layer air gap (10) and the inner layer air gap (11).

4. The double-stator permanent magnet synchronous motor of the new energy automobile according to claim 1, characterized in that: two V-shaped magnetism isolating grooves (5) are arranged on the same linear magnetic steel (6), and the two V-shaped magnetism isolating grooves (5) are symmetrical.

5. The double-stator permanent magnet synchronous motor of the new energy automobile according to claim 1, characterized in that: the linear magnetic steel (6) is provided with ten, every two linear magnetic steels (6) form a group, and five groups of linear magnetic steels (6) are symmetrical.

6. The double-stator permanent magnet synchronous motor of the new energy automobile according to claim 1, characterized in that: v-shaped magnetic isolation grooves (5) are formed in two sides of the linear magnetic steel (6).

7. The double-stator permanent magnet synchronous motor of the new energy automobile according to claim 1, characterized in that: the inner stator slot (8) is connected with the inner layer air gap (11).