CN212412982U - Self-excitation conductive motor - Google Patents
Self-excitation conductive motor Download PDFInfo
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- CN212412982U CN212412982U CN202021607042.9U CN202021607042U CN212412982U CN 212412982 U CN212412982 U CN 212412982U CN 202021607042 U CN202021607042 U CN 202021607042U CN 212412982 U CN212412982 U CN 212412982U
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Abstract
The utility model relates to a self-excitation magnetic motor, which comprises a rotating shaft, a rotor, a stator and a fan; the fan is installed rotor both ends, the material of fan is the magnetic conduction material. The utility model discloses in set up the fan, install the fan at the rotor both ends, can cool off the rotor. And the fan is magnetic conduction material, can make stator winding tip magnetic line of force closed, make full use of stator winding's magnetic leakage, make the magnetic leakage closed to produce the working torque, improved the power density of motor.
Description
Technical Field
The utility model relates to the technical field of electric machines, especially, relate to a self-excitation nature magnetic motor.
Background
With the development of a main drive motor of a new energy automobile, the power density of the main drive motor is continuously improved while the whole automobile weight of the electric automobile is continuously reduced and the endurance mileage is improved. However, in the process of improving the power density, the heat productivity of the motor is continuously increased, so that the duration time of the peak torque of the motor is shortened, the rated working condition operation temperature is increased, and particularly for the permanent magnet synchronous motor which is widely used at present, the permanent magnet is poor in thermal stability and serious in heat generation, so that the thermal demagnetization of the permanent magnet is caused, and the service life of the motor is greatly reduced.
In order to ensure that the temperature rise of the motor is within a reasonable range and improve the cooling performance of the liquid cooling motor, three methods are generally adopted: (1) flow resistance optimization is carried out on the cooling water channel of the machine shell, flow resistance of fluid along the way is reduced, and flow rate of cooling liquid is improved; (2) the power of a cooling water pump is improved, the flow of cooling liquid is increased, and the flow of the fluid is forced to increase the speed; (3) independent fans are added inside two sides of the rotor, so that the fans can perform forced convection heat exchange on the rotor. The hydraulic radius of the shell in the method (1) is basically determined without larger increase due to the restriction of the space in the vehicle, and the effect of reducing the flow resistance along the path is not obvious, so that the cooling is not obviously increased. While the method (2) increases the flow rate of the fluid by increasing the power of the water pump, the cooling is improved to a certain extent, but the cost is increased greatly. The method (3) is a rotor cooling mode commonly used in the motor, and can effectively cool the motor rotor, thereby indirectly improving the power density of the motor and ensuring that the temperature rise of the permanent magnet is controlled within an acceptable range. But because the installation of independent fan needs to leave enough big space in the motor inner chamber, and to the serious constraint in whole car space of car driving motor volume, if the motor increases, then can lose the space in whole car interior storehouse and experience.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a self-excitation nature magnetic conduction motor has improved the power density of motor when can making the rotor refrigerated.
In order to achieve the above object, the utility model provides a following scheme:
a self-excitation magnetic conduction motor comprises a rotating shaft, a rotor, a stator and a fan; the fan is installed rotor both ends, the material of fan is the magnetic conduction material.
Optionally, the fan is of a magnetic line closed structure.
Optionally, the fan includes flabellum, inner circle and baffle, the flabellum is installed on the inner circle, the flabellum with the inner circle is fixed on the baffle.
Optionally, the number of the fan blades is 2 times of the number of pole pairs of the self-excited magnetic motor.
Optionally, a fan mounting hole is formed in the baffle, and the fan blade and the inner ring are fixed to the fan mounting hole.
Optionally, the fan mounting hole and the fan blade and the inner ring form an excessive or interference fit so that the fan blade and the inner ring are fixed on the fan mounting hole.
Optionally, the rotor further comprises a retainer ring, and the retainer ring is installed between the rotor and the baffle.
Optionally, the rotor is mounted on the rotating shaft, and the rotating shaft is mounted inside the stator.
According to the utility model provides a concrete embodiment, the utility model discloses a following technological effect:
the utility model discloses a self-excitation magnetic conduction motor, which comprises a rotating shaft, a rotor, a stator and a fan; the fan is installed rotor both ends, the material of fan is the magnetic conduction material. The utility model discloses in set up the fan, install the fan at the rotor both ends, can cool off the rotor. And the fan is magnetic conduction material, can make stator winding tip magnetic line of force closed, make full use of stator winding's magnetic leakage, make the magnetic leakage closed to produce the working torque, improved the power density of motor.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is an exploded view of a self-excited magnetic motor according to an embodiment of the present invention;
fig. 2 is a structural diagram of a fan according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a fan according to an embodiment of the present invention.
Description of the symbols: the fan comprises a rotating shaft 1, a rotor 2, a stator 3, fan blades 4, a baffle 5, a fan mounting hole 6, an inner ring 7 and a retainer ring 8.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing a self-excitation nature magnetic conduction motor has improved the power density of motor when making the rotor refrigerated.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
Fig. 1 is a structural explosion diagram of a self-excited magnetic motor according to an embodiment of the present invention, and fig. 2 is a fan structure diagram according to an embodiment of the present invention. As shown in fig. 1 and 2, the self-excited magnetic motor includes a rotating shaft 1, a rotor 2, a stator 3, and a fan. Rotor 2 is installed on pivot 1, and pivot 1 is installed inside stator 3, and the fan is installed at rotor 2 both ends. The rotating shaft 1 is used for supporting the rotor 2 to rotate, and the rotor 2 and the stator 3 are used for electric-magnetic energy conversion of the motor. The fan comprises fan blades 4, a baffle plate 5, a fan mounting hole 6 and an inner ring 7, wherein the fan blades 4 are fixed on the inner ring 7 and then fixed on the baffle plate 5 through the fan mounting hole 6. Wherein, the fan blades 4 and the inner ring 7 are in excessive or interference fit with the fan mounting hole 6. The baffle 5 is fixed at two ends of the rotor 2, and the baffle 5 can fix the fan blades 4 and the inner ring 7, and can also fix the rotor 2 and the stator 3. In this embodiment, a retainer ring 8 is further provided, the retainer ring 8 being mounted between the rotor 2 and the baffle 5, the retainer ring 8 being used to prevent axial play of the motor.
The utility model discloses in, the fan material is the magnetic conduction material, and the structure is magnetic line of force enclosed construction, and the quantity of flabellum 4 is 2 times of motor pole pair number. Each stage can be one path of magnetic conduction fan blade or multiple paths, and can close the magnetic leakage at the end part of the winding of the stator 3. Fig. 3 is the embodiment of the utility model provides a fan schematic diagram, as shown in fig. 3, the magnetic conduction fan can force 3 winding head magnetic lines of force of closed stator in the use, and make full use of stator end winding's magnetic leakage makes the magnetic leakage close to produce working torque, improve motor torque and motor power density. And when the rotor 2 needs to be subjected to dynamic balance treatment, the purpose of dynamic balance of the rotor can be achieved by cutting the number of the fan blades 4.
On the other hand, when the fan rotates centrifugally, air near the end winding of the stator 3 can be fully disturbed, so that the convection heat exchange between the air and the winding of the stator 3 is accelerated, and the cold extraction effect is further improved. There is no interference between the ends of the fan blades 4 and the winding ends when mounted. The installation distance cannot be too far, otherwise the magnetic conduction can be failed. The pneumatic profile of the fan blades 4 can be designed differently according to different use conditions.
According to the utility model provides a concrete embodiment, the utility model discloses a following technological effect:
(1) the utility model discloses set up the fan and be the magnetic conduction material, the structure is magnetic line of force enclosed construction, and the quantity of flabellum 4 is 2 times of motor pole pair number. When the motor is used, the leakage flux can be closed, working torque is generated, and the motor torque and the motor power density are improved.
(2) The utility model discloses in, when rotor 2 need do the dynamic balance and handle, can reach rotor dynamic balance purpose through cutting 4 quantity of flabellum.
(3) The utility model discloses during well fan centrifugation is rotatory, can also cool off rotor 2, stator 3 and 3 windings of stator. Therefore, the power density of the motor is indirectly improved, and the temperature rise of the permanent magnet is controlled within an acceptable range.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principle and the implementation of the present invention are explained herein by using specific examples, and the above description of the embodiments is only used to help understand the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (8)
1. A self-excitation magnetic conduction motor comprises a rotating shaft, a rotor, a stator and a fan; the fan is characterized in that the fan is installed at two ends of the rotor, and the fan is made of a magnetic material.
2. The self-exciting conductive motor according to claim 1, wherein said fan is configured as a flux containment structure.
3. The self-exciting conductive motor according to claim 1, wherein said fan comprises a fan blade, an inner ring and a baffle, said fan blade being mounted on said inner ring, said fan blade and said inner ring being fixed to said baffle.
4. The self-exciting conductive motor according to claim 3, wherein the number of said fan blades is 2 times the number of pole pairs of said self-exciting conductive motor.
5. The self-exciting magnetic conductive motor according to claim 3, wherein said baffle has a fan mounting hole formed therein, and said fan blade and said inner ring are fixed to said fan mounting hole.
6. The self-exciting conductive motor according to claim 5, wherein said fan mounting hole forms an over or interference fit with said fan blade and said inner ring to fix said fan blade and said inner ring to said fan mounting hole.
7. The self-exciting conductive motor according to claim 3, further comprising a retainer ring mounted between said rotor and said baffle.
8. The self-exciting conductive motor according to claim 1, wherein said rotor is mounted on said shaft, said shaft being mounted inside said stator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021607042.9U CN212412982U (en) | 2020-08-05 | 2020-08-05 | Self-excitation conductive motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021607042.9U CN212412982U (en) | 2020-08-05 | 2020-08-05 | Self-excitation conductive motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212412982U true CN212412982U (en) | 2021-01-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021607042.9U Active CN212412982U (en) | 2020-08-05 | 2020-08-05 | Self-excitation conductive motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212412982U (en) |
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2020
- 2020-08-05 CN CN202021607042.9U patent/CN212412982U/en active Active
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