Nested coupling double-rotor generator

Abstract

The utility model discloses a nested coupling birotor generator, which comprises an inner rotor, an outer rotor and a transmission assembly, the outer rotor is sleeved outside the inner rotor, the inner rotor and the outer rotor are in transmission connection through the transmission assembly, the inner rotor can be driven to rotate, and the transmission assembly can be driven to rotate. The inner rotor drives the outer rotor to rotate reversely through a transmission assembly. According to the nested coupling double-rotor generator, the generator is provided with the double rotors which are mutually nested inside and outside and are opposite in rotation direction, when the motor works, the inner rotor and the outer rotor synchronously rotate and are opposite in rotation direction, and the relative rotation of the inner rotor and the outer rotor improves the speed of cutting a magnetic field by a power generation coil, so that the generator works more efficiently; and the requirement on the material is lower.

Description

Technical Field

[0001] The utility model belongs to the technical field of generators and relates to a nested coupled double-rotor generator. Background Art

[0002] Automobile generators are mainly used to charge the battery or power battery of the car to ensure the power demand of the vehicle. Existing generators are in the form of stator plus single rotor, and generate electricity by cutting the magnetic field through the generating coil. Therefore, the power generation efficiency of the generator is greatly affected by the speed of the rotor. Therefore, if you want to improve the power generation efficiency, you need to increase the speed of the generator. For existing single-rotor generators, due to the limited speed that can be achieved, under this premise, if you want to increase the speed, higher requirements are placed on the material strength, which requires higher process, material, manufacturing and other costs.

[0003] In order to solve the above problems, a generator is needed, which, based on conventional materials, can further increase the speed at which the generating coil cuts the magnetic field, so as to achieve the purpose of improving the power generation efficiency of the generator. Utility Model Content

[0004] In view of this, the utility model provides a nested coupled dual-rotor generator, which is provided with dual rotors that are nested inside and outside each other and rotate in opposite directions. When the motor is working, the inner rotor and the outer rotor rotate synchronously and in opposite directions, thereby improving the speed at which the generating coil cuts the magnetic field, making the generator work more efficiently and with lower requirements on materials.

[0005] The utility model discloses a nested coupled double-rotor generator, comprising an inner rotor, an outer rotor and a transmission assembly, wherein the outer rotor is externally mounted on the inner rotor, the inner rotor and the outer rotor are connected through the transmission assembly, the inner rotor can be driven to rotate, and the inner rotor drives the outer rotor to perform reverse rotation through the transmission assembly.

[0006] Furthermore, the transmission assembly includes a driving gear, an outer gear ring and a plurality of reversing gears, the inner rotor is provided with a power input shaft along the central axis, the driving gear is mounted on the power input shaft, the outer gear ring is mounted on the outer rotor, the plurality of reversing gears are evenly distributed along the circumference of the driving gear, and the driving gear and the outer gear ring form a transmission fit through the reversing gear.

[0007] Furthermore, it also includes a mounting frame mounted on the outer rotor, and the outer rotor is mounted on the power input shaft through the mounting frame in a manner that it can rotate around the power input shaft.

[0008] Furthermore, it also includes a retaining frame, which is installed on the power input shaft and is externally mounted on the outer rotor.

[0009] Furthermore, it also includes a shell and an end cover installed on the axial end of the shell, the shell is sleeved on the retaining frame, one end of the power input shaft is supported by the end cover, and the other end extends axially outward and passes through the shell.

[0010] Furthermore, the inner rotor is provided with a power generation coil, and the outer rotor is provided with a permanent magnet.

[0011] Furthermore, the end cover is provided with an armature chamber, and the power input shaft is provided with an outlet channel along the central axis, and the outlet channel is connected to the armature chamber.

[0012] Furthermore, the outer gear ring is mounted on an axial end of the outer rotor, and the retaining frame is supported by the outer gear ring.

[0013] Furthermore, the retaining frame and the mounting frame are arranged on both sides of the inner rotor in the axial direction.

[0014] Beneficial effects of the utility model:

[0015] The utility model discloses a nested coupled dual-rotor generator, which is provided with an inner rotor and an outer rotor which are nested with each other, and the inner rotor and the outer rotor are coupled with each other and rotate relatively when working through a transmission component. Within the tolerable strength range of the material, the generator disclosed by the utility model has a higher magnetic field cutting speed, so that the power generation system runs more efficiently, that is, conventional materials can be used to achieve the strength requirements of the generator with a higher speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front cross-sectional view of the utility model;

[0017] Figure 2 This is a schematic diagram of the installation structure of the transmission assembly of the utility model;

[0018] Figure 3 It is a schematic diagram of the axial side of the utility model. DETAILED DESCRIPTION

[0019] It should be noted that, in the description of this specification, the terms "upper", "lower", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0020] As shown in the figure, the utility model discloses a nested coupled dual-rotor generator, including an inner rotor 1, an outer rotor 2 and a transmission assembly, wherein the outer rotor 2 is externally mounted on the inner rotor 1, and the inner rotor 1 and the outer rotor 2 are transmission-connected via the transmission assembly, and the inner rotor 1 can be driven to rotate, and the inner rotor 1 drives the outer rotor 2 to perform reverse rotation through the transmission assembly. As shown in the figure, the inner rotor 1 and the outer rotor 2 in this embodiment are coaxially arranged, and the outer rotor 2 is outermostly arranged on the inner rotor 1, so that an inner-outer-outer double rotor structure is formed between the inner rotor 1 and the outer rotor 2. The transmission assembly in this embodiment is arranged as a whole on one end of the inner rotor 1 and the outer rotor 2, that is, the side of the power input. The inner rotor 1 can be driven to rotate by a power source such as an engine or a range extender. While the inner rotor 1 rotates, the outer rotor 2 is driven to rotate synchronously through the transmission assembly, and the rotation direction of the outer rotor 2 is opposite to that of the inner rotor 1. In this way, under the same material, the generator of the utility model has a greater number of times that the power generation coil cuts the magnetic field per unit time, and has a higher magnetic field cutting speed, which makes the power generation system run more efficiently. Although the generator has a higher speed, it has lower requirements for materials.

[0021] In this embodiment, the transmission assembly includes a driving gear 3, an outer gear ring 5 and a plurality of reversing gears 4. The inner rotor 1 is provided with a power input shaft 6 along the central axis. The driving gear 3 is installed on the power input shaft 6. The outer gear ring 5 is installed on the outer rotor 2. The plurality of reversing gears 4 are evenly distributed along the circumference of the driving gear 3. The driving gear 3 and the outer gear ring 5 form a transmission match through the reversing gear 4. As shown in the figure, there are three reversing gears 4 in this embodiment. The driving gear 3, the outer gear ring 5 and the reversing gear 4 in this embodiment constitute a planetary gear train. The driving gear 3 rotates synchronously with the inner rotor 1 in the same direction and at the same speed. The reversing gear 4 meshes with the driving gear 3 and the outer gear ring 5 at the same time, so that the outer gear ring 5 rotates in opposite directions to the driving gear 3, thereby realizing the reverse rotation of the inner rotor 1 and the outer rotor 2. The structure is simple and efficient. By adjusting the speed ratio of the transmission assembly, a wider efficiency matching range with the input power can be achieved.

[0022] In this embodiment, a mounting frame 11 mounted on the outer rotor 2 is further included, and the outer rotor 2 is mounted on the power input shaft 6 through the mounting frame 11 in a manner that it can rotate around the power input shaft 6. As shown in the figure, the mounting frame 11 is mounted on the power input shaft 6 through a bearing. In order to make the outer rotor 2 rotate more smoothly, the mounting frame 11 is provided to support the outer rotor 2, and at the same time, the coaxiality of the rotation can be ensured to prevent eccentric rotation.

[0023] In this embodiment, a retainer 12 is further included, and the retainer 12 is mounted on the power input shaft 6 and is outer-mounted on the outer rotor 2. In this embodiment, the outer gear ring 5 is mounted on the axial end of the outer rotor 2, and the retainer 12 abuts against the outer gear ring 5. The retainer 12 is mounted on the power input shaft 6 through a bearing, and is also abutted against the outer gear ring 5. Such an arrangement allows the retainer 12 to limit the inner rotor 1 and the outer rotor 2 in both the radial and axial directions, and does not affect the rotation of the inner rotor 1 and the outer rotor 2.

[0024] In this embodiment, it also includes a housing 7 and an end cover 8 installed on the axial end of the housing 7. The housing 7 is sleeved on the retaining frame 12. One end of the power input shaft 6 is supported by the end cover 8, and the other end extends outward in the axial direction and passes through the housing 7. The housing 7 in this embodiment is a cylindrical structure with an open end, and the end cover 8 is arranged at the open end to close it. The power input shaft 6 passes through the housing 7 and extends outside the housing 7 to facilitate connection with the drive device to input power. The housing 7 is provided with a bearing to support the power input shaft 6. At the same time, the power input shaft 6 is also supported by the end cover 8 through the bearing, and the support effect at both ends is higher and the rotation is more stable.

[0025] In this embodiment, the inner rotor 1 is provided with a power generation coil, and the outer rotor 2 is provided with a permanent magnet. In this embodiment, the end cover 8 is provided with an armature chamber 9, and the power input shaft 6 is provided with an outlet channel 10 along the central axis, and the outlet channel 10 is connected to the armature chamber 9. In this embodiment, the power input shaft 6 extends into the armature chamber 9, and the outlet wire of the power generation coil extends into the armature chamber 9 through the outlet channel 10. A corresponding armature assembly is provided in the armature chamber 9, and the outlet wire of the power generation coil is connected to the armature assembly. The specific structure of the armature assembly is a conventional technical means in this technical field, which will not be repeated here.

[0026] In this embodiment, the retaining frame 12 and the mounting frame 11 are arranged on both sides of the axial direction of the inner rotor 1. The retaining frame 12 and the mounting frame 11 are arranged on both sides of the axial direction of the inner rotor 1, and are also used to limit the inner rotor 1 and the outer rotor 2 in the axial direction to ensure that the generator works smoothly. In this embodiment, retaining rings are also arranged at both ends of the inner rotor 1 to further position and limit the inner rotor 1.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A nested coupled dual-rotor generator, characterized in that: The invention comprises an inner rotor, an outer rotor and a transmission assembly, wherein the outer rotor is fitted onto the inner rotor, the inner rotor and the outer rotor are connected to each other through the transmission assembly, the inner rotor can be driven to rotate, and the inner rotor drives the outer rotor to rotate in the opposite direction through the transmission assembly.

2. The nested coupled dual-rotor generator according to claim 1, characterized in that: The transmission assembly includes a driving gear, an outer gear ring and a plurality of reversing gears. The inner rotor is provided with a power input shaft along the central axis, the driving gear is mounted on the power input shaft, the outer gear ring is mounted on the outer rotor, and the plurality of reversing gears are evenly distributed along the circumference of the driving gear. The driving gear and the outer gear ring form a transmission fit through the reversing gear.

3. The nested coupled dual-rotor generator according to claim 2, characterized in that: It also includes a mounting frame mounted on the outer rotor, and the outer rotor is mounted on the power input shaft through the mounting frame in a manner that it can rotate around the power input shaft.

4. The nested coupled dual-rotor generator according to claim 3, characterized in that: It also includes a retaining frame, which is installed on the power input shaft and is externally mounted on the outer rotor.

5. The nested coupled dual-rotor generator according to claim 4, characterized in that: It also includes a shell and an end cover installed on the axial end of the shell. The shell is sleeved on the retaining frame. One end of the power input shaft is supported by the end cover, and the other end extends axially outward and passes through the shell.

6. The nested coupled dual-rotor generator according to claim 1, characterized in that: The inner rotor is provided with a power generation coil, and the outer rotor is provided with a permanent magnet.

7. The nested coupled dual-rotor generator according to claim 5, characterized in that: The end cover is provided with an armature chamber, and the power input shaft is provided with an outlet channel along the central axis, and the outlet channel is communicated with the armature chamber.

8. The nested coupled dual-rotor generator according to claim 4, characterized in that: The outer gear ring is installed at an axial end of the outer rotor, and the retaining frame is supported by the outer gear ring.

9. The nested coupled dual-rotor generator according to claim 4, characterized in that: The retaining frame and the mounting frame are arranged on both sides of the inner rotor in the axial direction.

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