Starter-generator structure

Abstract

The utility model relates to a starter-generator structure which comprises a casing, a winding stator is arranged on the inner wall of the casing, a rotor is arranged in the casing, and the rotor is connected with an engine. The casing is an axial short casing, the rotor in the casing is a rotary drum, and the outer cylindrical surface of the rotary drum is provided with a motor magnet to form a structure for enlarging the blank space of the rotor; an impeller sleeves the right end of the rotary drum; an output shaft is fixed at the center of the left end of the rotary drum through a supporting disc, and a rotary encoder is arranged at the center of the right end of the rotary drum through an auxiliary frame; when the engine drives the rotor to rotate through the output shaft, the impeller can enable air to sequentially flow in the axial direction from a gap between the winding stator and the motor magnet and holes of the porous cover, and can also enable the air to sequentially pass through the supporting disc and the auxiliary frame to cool the rotary encoder, and meanwhile cooling of the machine and the rotary encoder is achieved. The beneficial effects of the utility model are that the space size is increased, the air flowing time is reduced, the heating part of the motor and the heating part of the spinning are cooled in a centralized manner, and the heat dissipation effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of heuristic motors, in particular to a structure of a heuristic motor. Background Art

[0002] Motors and generators are reverse to each other, and their working principles are exactly opposite. A motor drives a rotating mechanical device through electricity, while a generator generates electricity by using a rotating mechanical device. A heuristic motor utilizes both the principle of a motor and the principle of a generator.

[0003] For example, in a fuel vehicle, when starting the vehicle, the electricity in the battery makes the heuristic motor rotate. When the heuristic motor rotates, it drives the fuel engine. At this time, the motor principle is executed. After the fuel engine works normally, the fuel engine drives the heuristic motor to rotate, making the heuristic motor generate electricity, and the generator principle is executed.

[0004] According to customer feedback, the current heuristic motor has an unsatisfactory heat dissipation effect and occupies a large installation space axially. Therefore, it is required to increase the heat dissipation effect and reduce the axial space as much as possible without affecting the motor performance.

[0005] Therefore, in view of the above situation, our company designs a new structure based on the existing heuristic motor. Content of the Utility Model

[0006] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a heuristic motor structure with an increased space size, a reduced air flow time, a centralized cooling of the motor heating part and the rotary encoder heating part, and a good heat dissipation effect.

[0007] The purpose of the utility model is achieved by the following technical solutions: a heuristic motor structure includes a machine shell, a winding stator is arranged on the inner wall of the machine shell, and a rotor is arranged in the machine shell. The rotor is connected to the engine;

[0008] The machine shell is an axially short shell, and the rotor in the machine shell is a rotating cylinder. The outer cylindrical surface of the rotating cylinder is provided with motor magnets, forming a structure that increases the blank space of the rotor. An impeller is sleeved outside the right end of the rotating cylinder;

[0009] For the rotating cylinder, an output shaft is fixed at the center of its left end through a support disk, and a rotary encoder is arranged at the center of its right end through an auxiliary frame;

[0010] When the engine drives the rotor to rotate through the output shaft, the impeller can make air flow axially through the gaps between the winding stator and the motor magnets and the holes of the porous cover in sequence, and can also make air cool the rotary encoder through the support disk and the auxiliary frame in sequence, while realizing the cooling of the machine and the rotary encoder.

[0011] As a preferred technical solution of the present application, a rotary magnetic body is installed at the center of the auxiliary frame. A rotary winding is sleeved outside the rotary magnetic body. The rotary winding is installed on a porous cover, and the porous cover is installed at the right end face of the casing. When the rotor drives the impeller to rotate, air can flow axially in sequence through the gaps between the support disk, the auxiliary frame, the rotary winding and the rotary magnetic body.

[0012] As a preferred technical solution of the present application, the left end of the rotating cylinder has a flanging. An aluminum strip is fixed on the flanging through a screw, and a motor magnet is embedded in the aluminum strip; there is a gap A between the aluminum strip and the outer cylindrical surface of the rotating cylinder, and there is a spacing B between adjacent aluminum strips, forming a structure convenient for the heat dissipation of the motor magnet.

[0013] Further, an annular groove is formed between the impeller and the flanging. The aluminum strip and the motor magnet are arranged in the annular groove; the annular groove is sealed by a non-magnetic thin cylinder; after the impeller is sleeved and fixed on the right end of the rotating cylinder, there is an annular gap between the two, so that the annular groove communicates with the outside; when the motor magnet generates heat, part of the heat dissipates through the aluminum strip - annular groove - the gap between the impeller and the rotating cylinder, and the other part of the heat dissipates directly through the non-magnetic thin cylinder.

[0014] Further, a keyway is opened on the outer cylindrical surface of the rotating cylinder, and the impeller has a protrusion; when the protrusion abuts against the bottom surface of the keyway in a matching manner, an annular gap can be formed between the inner ring of the impeller and the rotating cylinder; the impeller is also fixedly connected to the flanging through bolts.

[0015] As a preferred technical solution of the present application, the support disk is in a disk shape and is fixed integrally with the rotating cylinder; an output shaft is fixedly installed at the center of the support disk, and the support disk is supported on the inner wall of the rotating cylinder through ribs; through holes are opened on the support disk along the circumference of the output shaft, and the through holes are opposite to the position of the rotary braid; when air flows, it flows to the rotary braid through the through holes.

[0016] As a preferred technical solution of the present application, the auxiliary frame is in a flange frame shape and is fixed to the rear end of the rotating cylinder through screws; the center of the auxiliary frame has an integral central cylinder, and the rotary magnetic body is sleeved on the central cylinder; the central cylinder has a flared channel with a larger left side and a smaller right side.

[0017] For the convenience of understanding, the core design points and principles of this solution are described:

[0018] a. Expand the internal cavity of the motor to avoid heat concentration: By increasing the radial dimension of the casing, heat concentration is avoided;

[0019] b. Reduce the air flow path and improve the heat dissipation effect: Shorten the dimension of the casing axially. By arranging the impeller to make the air flow axially, the path of the air passing through the inside of the casing becomes shorter, and it is easier to take away the heat, avoiding the heat flowing in the casing and improving the heat dissipation effect;

[0020] c. Through the design of the support disk and the auxiliary frame, when air flows, it is easier for the air to flow through the gaps between the stator winding and the motor magnet, and between the rotating magnet and the rotating winding.

[0021] The utility model has the following advantages: good heat dissipation effect;

[0022] By increasing the radial dimension of the casing, the heat per unit volume is reduced; by reducing the axial dimension of the casing, when axial air is generated after setting the impeller, the time for the air to pass through the casing is short, and the air can quickly discharge the heat in the casing axially; by setting the support disk and the auxiliary frame, the axial air can be concentrated to dissipate heat at the gaps between the stator winding and the motor magnet, and between the rotating magnet and the rotating winding. Description of the Drawings

[0023] Figure 1 It is a schematic structural diagram of the utility model;

[0024] Figure 2 It is a schematic structural diagram of the utility model from another angle;

[0025] Figure 3 It is a cross-sectional view of the utility model;

[0026] Figure 4 It is the first exploded view of the utility model;

[0027] Figure 5 It is the second exploded view of the utility model;

[0028] Figure 6 It is a schematic structural diagram of the casing with a winding stator inside;

[0029] Figure 7 It is a schematic structural diagram of the casing without a winding stator inside;

[0030] Figure 8 It is a schematic structural diagram of the rotating cylinder;

[0031] Figure 9 It is a schematic structural diagram of the rotating cylinder from another angle;

[0032] Figure 10 It is a schematic structural diagram of the rotating cylinder after removing the non-magnetic thin cylinder, motor magnet, aluminum strip, and auxiliary frame;

[0033] Figure 11 It is a schematic structural diagram of the setting between the impeller, auxiliary frame, and rotating magnet;

[0034] Figure 12 It is a schematic structural diagram of the porous cover and the rotating winding;

[0035] In the figure: 10 - casing;

[0036] 20 - Rotating cylinder, 2001 - Keyway, 21 - Motor magnet, 22 - Support disk, 2201 - Through hole, 23 - Output shaft, 24 - Auxiliary frame, 2401 - Central cylinder, 25 - Flange, 26 - Aluminum strip, 27 - Non - magnetic thin cylinder;

[0037] 31 - Rotary encoder magnet, 32 - Rotary encoder winding;

[0038] 40 - Porous cover;

[0039] 50 - Impeller, 5001 - Protrusion. Detailed implementation mode

[0040] The following further describes the present utility model in conjunction with the attached drawings, but the protection scope of the present utility model is not limited to the following description.

[0041] It should be noted that the orientation or positional relationship indicated by "left", "right", etc. is based on the orientation or positional relationship shown in the attached drawings, or the orientation or positional relationship in which the invention product is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0042] It should be noted that, without conflict, the embodiments and the features and technical solutions in the embodiments of the present utility model can be combined with each other.

[0043] As Figures 1-7 shown, a kind of heuristic motor structure proposed in this implementation mode includes a machine shell 10. A winding stator is arranged on the inner wall of the machine shell 10. A rotor coaxial with the machine shell 10 is arranged in the machine shell 10. The rotor is directly connected to the engine, and there is no bearing support between the rotor and the machine shell 10;

[0044] Among them, for the machine shell 10, its diameter is increased along the radial direction and its length is shortened along the axial direction, making it a short shell;

[0045] Among them, the rotor is designed as a rotating cylinder 20. A motor magnet 21 is arranged on the outer cylindrical surface of the rotating cylinder 20. An output shaft 23 is fixedly installed at the left end of the rotating cylinder 20 through a support disk 22. A rotary encoder - that is, a rotating encoder is arranged at the center of the rotating cylinder 20. In this way, the spatial structure of the entire rotor is increased, and there is a relatively large blank space inside the rotor;

[0046] In addition, an impeller 50 is sleeved on the right end of the rotating cylinder 20;

[0047] During installation, directly connect the output shaft 23 to the rotating shaft of the engine, and fix the housing 10 to the engine body.

[0048] During operation, when the rotating shaft of the engine drives the rotating cylinder 20 to rotate via the output shaft 23, the impeller 50 rotates, causing air to flow axially successively through the gap between the winding stator and the motor magnet 21 and the holes of the porous cover 40. In addition, air can also flow through the support disk 22 and the auxiliary frame 24 in sequence to cool the rotary encoder, thereby cooling the motor and the rotary encoder simultaneously.

[0049] It should be noted that the output shaft 23 has a central jack, and the inner wall of the jack has a spline groove shape; the rotating shaft of the engine is inserted into the central jack, and the rotating shaft has corresponding splines.

[0050] Refer to Figure 2 and Figure 12 , in order to better cool the rotary encoder, a rotary encoder magnet 31 is installed at the center of the auxiliary frame 24, and a rotary encoder winding 32 is sleeved outside the rotary encoder magnet 31. The rotary encoder winding 32 is installed on the porous cover 40, and the porous cover 40 is installed at the right end face of the housing 10. When the rotor drives the impeller 50 to rotate, air can flow axially successively through the support disk 22, the auxiliary frame 24, and the gap between the rotary encoder winding 32 and the rotary encoder magnet 31.

[0051] In order to further cool the rotary encoder well, the support disk 22 and the auxiliary frame 24 are designed as follows:

[0052] Refer to Figure 2 , Figure 8 and Figure 10 : The support disk 22 is in a disk shape and is fixed integrally with the rotating cylinder 20; the output shaft 23 is fixedly installed at the center of the support disk 22, and a frustum is provided at the center of the back surface of the support disk 22. The frustum is supported on the inner wall of the rotating cylinder 20 via ribs; through holes 2201 are provided on the support disk 25 along the circumferential direction of the output shaft 23, and the through holes 2201 are opposite to the position of the rotary encoder.

[0053] Refer to Figure 2 , Figure 9 and Figure 11 : The auxiliary frame 24 is in a flange frame shape and is fixed to the rear end of the rotating cylinder 20 via screws; a central cylinder 2401 is integrally provided at the center of the auxiliary frame 24, and the rotary encoder magnet 31 is sleeved on the central cylinder 2401; the central cylinder 2401 has a flared channel with a larger left side and a smaller right side.

[0054] During operation, when the impeller 50 rotates, a part of the air flows axially through the through holes 2201, and the air flows to the gap between the rotary encoder magnet 31 and the rotary encoder winding 32, thereby performing concentrated cooling on this part.

[0055] Refer toFigure 2 and Figure 10 In order to cool the motor magnet 21 well, corresponding designs are made as follows: there is a flange 25 at the left end of the rotary drum 20, and an aluminum strip 26 is fixed on the flange 25 by screws. The motor magnet 21 is embedded in the aluminum strip 26; there is a gap A between the aluminum strip 26 and the outer cylindrical surface of the rotary drum 20, and there is a distance B between adjacent aluminum strips 26;

[0056] In addition, an annular groove is formed between the impeller 50 and the flange 25, and the aluminum strip 26 and the motor magnet 21 are arranged in this annular groove; this annular groove is sealed by a non-magnetic thin cylinder 27; after the impeller 50 is sleeved and fixed on the right end of the rotary drum 20, there is an annular gap between the two, so that the annular groove communicates with the outside;

[0057] When the motor magnet 21 gets hot, part of the heat dissipates through the aluminum strip - annular groove - the gap between the impeller 50 and the rotary drum 20, and the other part of the heat dissipates directly through the non-magnetic thin cylinder 27.

[0058] In this embodiment, referring to Figure 10 , a keyway 2001 is formed on the outer cylindrical surface of the rotary drum 20, and the impeller 50 has a protrusion 5001; when the protrusion 5001 abuts against the bottom surface of the keyway 2001 appropriately, an annular gap can be formed between the inner ring of the impeller 50 and the rotary drum 20; the impeller 50 is also fixedly connected to the flange 25 by bolts.

[0059] In this article, specific examples are used to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the core idea of the present utility model. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present utility model, several improvements and modifications can still be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. An induction motor structure, comprising a housing (10), a winding stator being arranged on the inner wall of the housing (10), a rotor being arranged in the housing (10), and the rotor being connected to an engine, characterized in that: The housing (10) is an axially short housing, the rotor in the housing (10) is a drum (20), and the outer cylindrical surface of the drum (20) is provided with a motor magnet (21), forming a structure that increases the blank space of the rotor; An impeller (50) is disposed on the outer sleeve at the right end of the rotating drum (20); The rotating drum (20) has an output shaft (23) fixed at the center of its left end via a support plate (22), and a rotary encoder is provided at the center of its right end via an auxiliary frame (24); When the engine drives the rotor to rotate via the output shaft (23), the impeller (50) allows air to flow axially through the gap between the winding stator and the motor magnet (21) and the holes of the porous cover (40) in sequence, and also allows air to cool the rotary encoder through the support plate (22) and the auxiliary frame (24) in sequence, thereby achieving cooling of the machine and the rotary encoder at the same time.

2. The electric motor structure according to claim 1, characterized in that: A rotary woven magnet (31) is installed at the center of the auxiliary frame (24), a rotary woven winding (32) is arranged on the outer cover of the rotary woven magnet (31), the rotary woven winding (32) is installed on a porous cover (40), and the porous cover (40) is installed on the right end surface of the casing (10); When the rotor drives the impeller (50) to rotate, air can flow axially through the gaps between the support disk (22), the auxiliary frame (24), the rotary winding (32) and the rotary magnet (31) in sequence.

3. An inspiration motor structure according to claim 1 or 2, characterized in that: The left end of the rotating drum (20) is provided with a flange (25), an aluminum bar (26) is fixed on the flange (25) via a screw, and a motor magnet (21) is embedded on the aluminum bar (26); There is a gap A between the aluminum strip (26) and the outer cylindrical surface of the rotating drum (20), and there is a spacing B between adjacent aluminum strips (26), forming a structure that facilitates heat dissipation of the motor magnets.

4. The electric motor structure according to claim 3, characterized in that: The impeller (50) and the flange (25) form an annular groove, and the aluminum strip (26) and the motor magnet (21) are arranged in the annular groove; the annular groove is sealed by a non-magnetic thin cylinder (27); After the impeller (50) is sleeved and fixed on the right end of the rotating drum (20), an annular gap is formed between the two, so that the annular groove is connected to the outside world; when the motor magnet (21) generates heat, part of the heat is dissipated through the gap between the aluminum strip-the annular groove-the impeller (50) and the rotating drum (20), and the other part of the heat is directly dissipated through the non-magnetic thin cylinder (27).

5. The electric motor structure according to claim 4, characterized in that: The outer cylindrical surface of the rotating drum (20) is provided with a keyway (2001), and the impeller (50) has a protrusion (5001); when the protrusion (5001) fits against the bottom surface of the keyway (2001), an annular gap is formed between the inner ring of the impeller (50) and the rotating drum (20); The impeller (50) is also fixedly connected to the flange (25) via bolts.

6. An inspired motor structure according to any one of claims 2, 4 and 5, characterized in that: The support plate (22) is in the shape of a circular plate and is fixed integrally with the rotating drum (20); An output shaft (23) is fixedly mounted at the center of the support disk (22), and the support disk (22) is supported on the inner wall of the rotating drum (20) via ribs; a through hole (2201) is opened on the support disk (22) along the circumference of the output shaft (23), and the through hole (2201) is opposite to the position of the rotary knitting; when air flows, it flows to the rotary knitting through the through hole (2201).

7. An inspired motor structure according to any one of claims 2, 4 and 5, characterized in that: The auxiliary frame (24) is in the shape of a flange frame and is fixed to the rear end of the rotating drum (20) by screws; The auxiliary frame (24) has an integrated central tube (2401) at its center, and a rotary-woven magnet (31) is sleeved on the central tube (2401); the central tube (2401) has an expanded channel that is larger on the left and smaller on the right.

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