Stator permanent magnet type double-rotor motor structure for hybrid electric vehicle

Abstract

The utility model discloses a stator permanent magnet type double-rotor motor structure for a hybrid electric vehicle, which comprises an outer stator iron core unit, an outer rotor, an inner rotor iron core unit and a rotating shaft which are coaxial, the inner rotor iron core unit is fixedly sleeved on the rotating shaft, and the outer rotor is sleeved outside the inner rotor iron core unit in a clearance mode. The stator permanent magnet type birotor motor relates to the technical field of stator permanent magnet type birotor motors, first heat dissipation through holes are formed in the inner rotor iron core unit, and the surface area of the inner rotor iron core unit is increased through the first heat dissipation through holes, so that the heat dissipation performance of the inner rotor iron core unit is enhanced; the outer rotor is provided with the second heat dissipation through holes, and the surface area of the outer rotor is increased through the second heat dissipation through holes, so that the heat dissipation performance of the outer rotor is enhanced, the heat dissipation of the outer rotor is better, the temperature of the outer rotor is reduced, the outer rotor can better conduct the heat of the inner rotor iron core unit, and the heat dissipation of the inner rotor iron core unit is indirectly enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to stator permanent magnet type double rotor motor technical field, concretely is a kind of stator permanent magnet type double rotor motor structure for hybrid electric vehicle. BACKGROUND

[0002] The driving component of hybrid electric vehicle is motor, and the performance of motor plays a vital influence on the performance of hybrid electric vehicle.The motor for hybrid electric vehicle includes switched reluctance double rotor motor, stator permanent magnet type double rotor motor and permanent magnet flux switching motor.The outer stator and inner rotor of switched reluctance double rotor motor have winding, and the outer rotor is double salient pole structure and has no winding and permanent magnet, and the structure is simple, with the characteristics of wide constant power range, but its efficiency is lower than that of permanent magnet motor, and high power density and small and light weight are required in hybrid electric vehicle application.The stator permanent magnet type double rotor motor can refer to the stator permanent magnet type double rotor motor disclosed in the patent document with publication number CN101106308, and the permanent magnet and winding are located on the outer stator and inner rotor, and the double salient pole outer rotor has no permanent magnet and winding, and the structure is simple, avoiding the problems of heat dissipation and permanent magnet fixation on the outer rotor.The magnetic field coupling of inner and outer motor is much smaller than that of double rotor motor with permanent magnet on the outer rotor, and the efficiency and power density are higher than those of switched reluctance double rotor motor.

[0003] The utility model patent with publication number CN203617864U discloses a stator permanent magnet type double rotor motor structure for hybrid electric vehicle, but since the inner rotor has permanent magnet, the heat dissipation and fixation of inner rotor are still problems, and the working reliability cannot be guaranteed when applied to hybrid electric vehicle system. UTILITY MODEL CONTENT

[0004] In view of the problems existing in the prior stator permanent magnet type double rotor motor structure for hybrid electric vehicle, the utility model is proposed.

[0005] Therefore, the utility model aims to provide a stator permanent magnet type double rotor motor structure for hybrid electric vehicle, which solves the problems of heat dissipation and fixation of inner rotor due to permanent magnet on the inner rotor, and the working reliability cannot be guaranteed when applied to hybrid electric vehicle system.

[0006] To solve the above technical problems, according to one aspect of the utility model, the utility model provides the following technical scheme:

[0007] A stator permanent magnet type double rotor motor structure for hybrid electric vehicle includes coaxial outer stator core unit, outer rotor, inner rotor core unit and rotating shaft, the inner rotor core unit is fixedly sleeved on the rotating shaft, the outer rotor is gap-sleeved on the outer stator core unit, and the outer rotor or inner rotor core unit is provided with heat dissipation through hole.

[0008] As a preferred scheme of the utility model discloses a kind of hybrid electric vehicle with stator permanent magnet type double rotor motor structure, wherein: the outer stator core unit is opened with the outer stator groove with opening direction axis.

[0009] As a preferred scheme of the utility model discloses a kind of hybrid electric vehicle with stator permanent magnet type double rotor motor structure, wherein: the first heat dissipation through-hole is opened on the inner rotor core unit, and the aperture of the first heat dissipation through-hole is between 1-1.5mm.

[0010] As a preferred scheme of the utility model discloses a kind of hybrid electric vehicle with stator permanent magnet type double rotor motor structure, wherein: the second heat dissipation through-hole is opened on the outer rotor, and the aperture of the second heat dissipation through-hole is between 1.5-2mm.

[0011] As a preferred scheme of the utility model discloses a kind of hybrid electric vehicle with stator permanent magnet type double rotor motor structure, wherein: the second heat dissipation through-hole is opened on the outer rotor, and the aperture of the second heat dissipation through-hole is between 1.5-2mm.

[0012] As a preferred scheme of the utility model discloses a kind of hybrid electric vehicle with stator permanent magnet type double rotor motor structure, wherein: the inner wall of the outer rotor has blade, and the gap between the one end of the blade close to the inner rotor core unit and the inner rotor core unit.

[0013] As a preferred scheme of the utility model discloses a kind of hybrid electric vehicle with stator permanent magnet type double rotor motor structure, wherein: the inner wall of the outer rotor has blade, and the gap between the one end of the blade close to the inner rotor core unit and the inner rotor core unit.

[0014] As a preferred scheme of the utility model discloses a kind of hybrid electric vehicle with stator permanent magnet type double rotor motor structure, wherein: the inner wall of the outer rotor has blade, and the gap between the one end of the blade close to the inner rotor core unit and the inner rotor core unit.

[0015] Compared with prior art:

[0016] 1, by opening the first heat dissipation through-hole on the inner rotor core unit, the surface area of the inner rotor core unit is increased, so that the heat dissipation performance of the inner rotor core unit is enhanced.

[0017] 2. By opening a second heat dissipation through hole on the outer rotor, the surface area of ​​the outer rotor is increased, thereby enhancing the heat dissipation performance of the outer rotor. The outer rotor dissipates heat better, so the temperature of the outer rotor is lowered. As a result, the outer rotor can better conduct heat from the inner rotor core unit, thereby indirectly enhancing the heat dissipation of the inner rotor core unit.

[0018] 3. By setting blades on the inner wall of the outer rotor, the outer rotor drives the blades to rotate, and the blades generate wind power, thereby further enhancing the heat dissipation performance of the inner rotor core unit. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present utility model;

[0020] Figure 2 This is a structural schematic diagram of Embodiment 2 of the present invention;

[0021] Figure 3 This is a structural schematic diagram of Embodiment 3 of the present utility model;

[0022] Figure 4 This is a structural schematic diagram of Embodiment 4 of the present utility model;

[0023] Figure 5 This is a structural schematic diagram of Embodiment 5 of the present invention;

[0024] Figure 6 This is a structural schematic diagram of Embodiment 6 of the present invention.

[0025] In the figure: outer stator core unit 1, outer stator permanent magnet 2, outer rotor 3, second heat dissipation through hole 31, inner rotor core unit 4, first heat dissipation through hole 41, blade 42, outer stator groove 5, rotating shaft 6. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0027] This utility model provides a stator permanent magnet type dual rotor motor structure for hybrid electric vehicles, including...

[0028] The device includes a coaxial outer stator core unit 1, an outer rotor 3, an inner rotor core unit 4, and a rotating shaft 6. The inner rotor core unit 4 is fixedly sleeved on the rotating shaft 6. The outer rotor 3 is sleeved on the inner rotor core unit 4 with a gap, and the outer stator core unit 1 is sleeved on the outer rotor 3 with a gap. The device is characterized in that: heat dissipation through holes are provided on the outer rotor 3 or the inner rotor core unit 4, and an outer stator groove 5 with an opening facing the axis is provided on the outer stator core unit 1.

[0029] Example 1:

[0030] Please see Figure 1 The inner rotor core unit 4 is provided with a first heat dissipation through hole 41, the diameter of which is between 1 and 1.5 mm.

[0031] In practical use, the first heat dissipation through hole 41 increases the surface area of ​​the inner rotor core unit 4, thereby enhancing the heat dissipation performance of the inner rotor core unit 4.

[0032] Example 2:

[0033] See attached document Figure 2 Unlike Embodiment 1, the outer rotor 3 is provided with a second heat dissipation through hole 31, the diameter of which is between 1.5-2mm. At the same time, the first heat dissipation through hole 41 increases the surface area of ​​the inner rotor core unit 4, thereby enhancing the heat dissipation performance of the inner rotor core unit 4.

[0034] In practical use, the second heat dissipation through hole 31 increases the surface area of ​​the outer rotor 3, thereby enhancing the heat dissipation performance of the outer rotor 3. The outer rotor 3 dissipates heat better, so the temperature of the outer rotor 3 decreases. As a result, the outer rotor 3 can better conduct the heat of the inner rotor core unit 4, thereby indirectly enhancing the heat dissipation of the inner rotor core unit 4.

[0035] Example 3:

[0036] See attached document Figure 3 Unlike Embodiment 1, the outer rotor 3 is provided with a second heat dissipation through hole 31, the diameter of which is between 1.5-2mm, and the inner rotor core unit 4 is provided with a first heat dissipation through hole 41, the diameter of which is between 1-1.5mm.

[0037] In practical use, the first heat dissipation through hole 41 increases the surface area of ​​the inner rotor core unit 4, thereby enhancing the heat dissipation performance of the inner rotor core unit 4; the second heat dissipation through hole 31 increases the surface area of ​​the outer rotor 3, thereby enhancing the heat dissipation performance of the outer rotor 3. The outer rotor 3 dissipates heat better, so the temperature of the outer rotor 3 decreases, and the outer rotor 3 can better conduct the heat of the inner rotor core unit 4, thereby indirectly enhancing the heat dissipation of the inner rotor core unit 4.

[0038] Example 4:

[0039] See attached document Figure 4 Unlike Embodiment 1, the outer rotor 3 has blades 42 on its inner wall, and there is a gap between the end of the blades 42 near the inner rotor core unit 4 and the inner rotor core unit 4.

[0040] In practical use, the first heat dissipation through hole 41 increases the surface area of ​​the inner rotor core unit 4, thereby enhancing the heat dissipation performance of the inner rotor core unit 4; the outer rotor 3 drives the blades 42 to rotate, and the blades 42 generate wind force, which further enhances the heat dissipation performance of the inner rotor core unit 4.

[0041] Example 5:

[0042] See attached document Figure 5 Unlike Embodiment 1, the outer rotor 3 has blades 42 on its inner wall, and there is a gap between the end of the blades 42 near the inner rotor core unit 4 and the inner rotor core unit 4.

[0043] In practical use, the second heat dissipation through hole 31 increases the surface area of ​​the outer rotor 3, thereby enhancing the heat dissipation performance of the outer rotor 3. The outer rotor 3 dissipates heat better, so the temperature of the outer rotor 3 decreases. As a result, the outer rotor 3 can better conduct the heat of the inner rotor core unit 4, thereby indirectly enhancing the heat dissipation of the inner rotor core unit 4. The outer rotor 3 drives the blades 42 to rotate, and the blades 42 generate wind force, thereby further enhancing the heat dissipation performance of the inner rotor core unit 4.

[0044] Example 6:

[0045] See attached document Figure 6 Unlike Embodiment 1, the outer rotor 3 has blades 42 on its inner wall, and there is a gap between the end of the blades 42 near the inner rotor core unit 4 and the inner rotor core unit 4.

[0046] In practical use, the first heat dissipation through hole 41 increases the surface area of ​​the inner rotor core unit 4, thereby enhancing the heat dissipation performance of the inner rotor core unit 4; the second heat dissipation through hole 31 increases the surface area of ​​the outer rotor 3, thereby enhancing the heat dissipation performance of the outer rotor 3. The outer rotor 3 dissipates heat better, so the temperature of the outer rotor 3 decreases, and the outer rotor 3 can better conduct the heat of the inner rotor core unit 4, thereby indirectly enhancing the heat dissipation of the inner rotor core unit 4; the outer rotor 3 drives the blades 42 to rotate, and the blades 42 generate wind force, thereby further enhancing the heat dissipation performance of the inner rotor core unit 4.

[0047] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A stator permanent magnet dual-rotor motor structure for hybrid electric vehicles, comprising a coaxial outer stator core unit (1), an outer rotor (3), an inner rotor core unit (4), and a rotating shaft (6), wherein the inner rotor core unit (4) is fixedly sleeved on the rotating shaft (6), the outer rotor (3) is sleeved with a gap around the inner rotor core unit (4), and the outer stator core unit (1) is sleeved with a gap around the outer rotor (3), characterized in that: The outer rotor (3) or inner rotor core unit (4) is provided with heat dissipation holes.

2. The stator permanent magnet type dual rotor motor structure for hybrid electric vehicles according to claim 1, characterized in that, The outer stator core unit (1) has an outer stator groove (5) with an opening facing the axis.

3. The stator permanent magnet type dual rotor motor structure for hybrid electric vehicles according to claim 2, characterized in that, The inner rotor core unit (4) is provided with a first heat dissipation through hole (41), the diameter of which is between 1 and 1.5 mm.

4. The stator permanent magnet type dual rotor motor structure for hybrid electric vehicles according to claim 2, characterized in that, The outer rotor (3) is provided with a second heat dissipation through hole (31), the diameter of which is between 1.5-2mm.

5. The stator permanent magnet type dual rotor motor structure for hybrid electric vehicles according to claim 3, characterized in that, The outer rotor (3) is provided with a second heat dissipation through hole (31), the diameter of which is between 1.5-2mm.

6. The stator permanent magnet type dual rotor motor structure for hybrid electric vehicles according to claim 3, characterized in that, The outer rotor (3) has blades (42) on its inner wall, and there is a gap between the end of the blade (42) near the inner rotor core unit (4) and the inner rotor core unit (4).

7. The stator permanent magnet type dual rotor motor structure for hybrid electric vehicles according to claim 4, characterized in that, The outer rotor (3) has blades (42) on its inner wall, and there is a gap between the end of the blade (42) near the inner rotor core unit (4) and the inner rotor core unit (4).

8. The stator permanent magnet type dual rotor motor structure for hybrid electric vehicles according to claim 5, characterized in that, The outer rotor (3) has blades (42) on its inner wall, and there is a gap between the end of the blade (42) near the inner rotor core unit (4) and the inner rotor core unit (4).

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