Brushless fan rotor structure of new energy automobile

Abstract

The utility model belongs to the technical field of brushless fans, and particularly relates to a rotor structure of a brushless fan of a new energy automobile. The brushless draught fan comprises a brushless draught fan shell, and a stator containing cavity is formed in the brushless draught fan shell. In the use process, the stator is arranged in the brushless fan shell, the stator is positioned and fixed through the stator positioning part, so that the stator can axially rotate along the stator positioning part, the stator is driven to rotate through the matching between the equipartition type rotor assembly and the stator, and the equipartition type rotor assembly adopts a uniform distribution structure, so that the uniform distribution of the stator is realized. According to the brushless fan, the distribution density of the rotor is increased, the rotating speed of the brushless fan can be further increased, in the operation process, large-area heat dissipation of the inner side and the outer side can be achieved through the inner side heat dissipation part and the outer side heat dissipation part, the heat dissipation effect is improved, meanwhile, the back connection type connecting part is conveniently connected with a connecting piece and staggered with a stator containing cavity, and an abdicating space is achieved; and the installation of the stator is not influenced and the structure is compact and reasonable.

Description

Technical Field

[0001] The utility model belongs to the technical field of brushless fans and relates to a brushless fan rotor structure for a new energy vehicle. Background Art

[0002] At present, automotive fans use brushed DC motors with a power of 90W-800W. The structure of the brushed DC motor includes a stator, a rotor with a commutator, and a brush holder assembly. The brush holder assembly includes carbon brushes, springs, a brush house, and a vibration reduction part. At the same time, the processing of parts for brushed DC motors is prone to cold welding, which makes it difficult to inspect. The structure of the commutator and the carbon brush is complex, and the installation space is large. In addition, the contact resistance of the commutator and the carbon brush of the brushed DC motor is large, which greatly affects the working reliability and life of the motor, and the efficiency is relatively low.

[0003] The industry now uses brushless permanent magnet DC motors, which have good reliability and are suitable for automotive fans. The existing brushless motor rotor structure generally adopts a bidirectional symmetrical structure. The distribution density of the rotor in this structure is low, which affects the further improvement of the brushless motor speed. When running at high speed, heat is easily accumulated inside, which affects the service life. Therefore, it is urgent to design a brushless fan rotor structure for new energy vehicles that can overcome the above defects.

[0004] In order to overcome the shortcomings of the prior art, people have proposed various solutions through continuous exploration, such as a Chinese patent that discloses a fan and a single-phase outer rotor brushless motor thereof [application number: 201510502469.X], including a stator and a rotor. The stator includes a stator core and a winding wound on the stator core, the stator core includes a yoke, a plurality of teeth extending radially outward from the yoke, each tooth includes a tooth body and a tooth crown formed by the end of the tooth body extending circumferentially, the rotor includes a rotor yoke, and a permanent magnet disposed on the inner wall of the rotor yoke, the inner surface of the permanent magnet is opposite to the outer surface of the tooth crown, and an air gap is formed between the inner surface of the permanent magnet and the outer surface of the tooth crown. Utility Model Content

[0005] The purpose of the utility model is to provide a brushless fan rotor structure for a new energy vehicle in view of the above problems.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A brushless fan rotor structure for a new energy vehicle comprises a brushless fan housing, wherein the brushless fan housing has a stator accommodating chamber, the brushless fan housing is provided with a stator positioning portion integrally formed with the brushless fan housing, the brushless fan housing is provided with a plurality of equally divided rotor assemblies distributed in a circular array along the center point of the brushless fan housing, the equally divided rotor assemblies and the stator positioning portion are arranged alternately, the brushless fan housing is further provided with an inner heat dissipation portion, an outer heat dissipation portion and a back-connecting portion, and the inner heat dissipation portion, the outer heat dissipation portion and the back-connecting portion are arranged alternately.

[0008] In the above-mentioned brushless fan rotor structure of new energy vehicles, the evenly divided rotor assembly includes eight brushless fan rotors arranged in a brushless fan housing, and the eight brushless fan rotors are distributed in a circular array along the center point of the brushless fan housing, and the brushless fan rotor is located in the inner circle of the brushless fan housing.

[0009] In the above-mentioned brushless fan rotor structure for new energy vehicles, a step gap is formed between the outer side surface of the brushless fan rotor and the inner ring surface of the brushless fan housing.

[0010] In the above-mentioned brushless fan rotor structure of the new energy vehicle, a spacing area is formed between two adjacent brushless fan rotors, and the plurality of spacing areas are distributed in a circular array along the center point of the brushless fan housing.

[0011] In the above-mentioned brushless fan rotor structure for new energy vehicles, the stator positioning part includes a stator positioning shaft arranged on the brushless fan housing, and a weight reduction part is arranged inside the stator positioning shaft, and the weight reduction part passes through the stator positioning shaft.

[0012] In the above-mentioned brushless fan rotor structure for new energy vehicles, the weight-reducing portion includes a weight-reducing through hole arranged in the stator positioning shaft, and the weight-reducing through hole passes through the stator positioning shaft.

[0013] In the above-mentioned brushless fan rotor structure for new energy vehicles, a reinforcement convex ring is provided between the stator positioning shaft and the brushless fan housing, and the outer diameter of the reinforcement convex ring is larger than the outer diameter of the stator positioning shaft.

[0014] In the above-mentioned brushless fan rotor structure of new energy vehicles, the inner heat dissipation part includes a plurality of inner heat dissipation grooves arranged in the brushless fan housing, and the plurality of inner heat dissipation grooves are distributed in a circular array along the center point of the brushless fan housing, and the inner heat dissipation grooves are fan-shaped.

[0015] In the above-mentioned brushless fan rotor structure of new energy vehicles, the outer heat dissipation part includes a plurality of outer heat dissipation slots arranged in the brushless fan housing, and the plurality of outer heat dissipation slots are distributed in a circular array along the center point of the brushless fan housing.

[0016] In the above-mentioned brushless fan rotor structure for new energy vehicles, the back-connecting connection portion includes a plurality of back connection protrusions arranged in the brushless fan housing, and the back connection protrusions are provided with internal threads.

[0017] Compared with the existing technology, the advantages of the utility model are: during use, the stator is installed into the brushless fan housing, and the stator is positioned and fixed by the stator positioning part, so that the stator can rotate axially along the stator positioning part, and the stator is driven to rotate through the cooperation between the evenly divided rotor assembly and the stator. The evenly divided rotor assembly adopts a uniform distribution structure, which increases the distribution density of the rotor and can further improve the speed of the brushless fan. During operation, large-area heat dissipation inside and outside can be achieved through the inner heat dissipation part and the outer heat dissipation part, thereby improving the heat dissipation effect. At the same time, the back-connected connection part is convenient for connection with the connecting piece, and is offset from the stator accommodating chamber to achieve clearance space, which will not affect the installation of the stator, and the structure is compact and reasonable.

[0018] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] Figure 2 It is a structural schematic diagram of the utility model in another direction.

[0021] Figure 3 It is a structural schematic diagram of the utility model in another direction.

[0022] In the figure: a brushless fan housing 1, a stator accommodating chamber 2, a stator positioning portion 3, an evenly divided rotor assembly 4, an inner heat dissipation portion 5, an outer heat dissipation portion 6, a back-connecting portion 7, a brushless fan rotor 8, a drop gap 9, a spacing area 10, a stator positioning shaft 11, a weight reduction portion 12, a weight reduction through hole 13, a reinforcement convex ring 14, an inner heat dissipation groove 15, an outer heat dissipation groove 16, and a back connecting protrusion 17. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings.

[0024] like Figure 1-3As shown, a brushless fan rotor structure for a new energy vehicle comprises a brushless fan housing 1, wherein the brushless fan housing 1 has a stator accommodating chamber 2, wherein the brushless fan housing 1 is provided with a stator positioning portion 3 integrally formed with the brushless fan housing 1, wherein the brushless fan housing 1 is provided with a plurality of equally divided rotor assemblies 4 distributed in a circular array along the center point of the brushless fan housing 1, wherein the equally divided rotor assemblies 4 are staggered with the stator positioning portion 3, wherein the brushless fan housing 1 is further provided with an inner heat dissipation portion 5, an outer heat dissipation portion 6 and a back-connecting portion 7, wherein the inner heat dissipation portion 5, the outer heat dissipation portion 6 and the back-connecting portion 7 are staggered.

[0025] In this embodiment, during use, the stator is installed into the brushless fan housing 1, and the stator is positioned and fixed by the stator positioning portion 3, so that the stator can rotate axially along the stator positioning portion 3, and the stator is driven to rotate through the cooperation between the evenly divided rotor assembly 4 and the stator. The evenly divided rotor assembly 4 adopts a uniformly distributed structure, which increases the distribution density of the rotor and can further increase the speed of the brushless fan. During operation, large-area heat dissipation inside and outside can be achieved through the inner heat dissipation portion 5 and the outer heat dissipation portion 6, thereby improving the heat dissipation effect. At the same time, the back-connected connection portion 7 is convenient for connection with the connecting piece, and is offset from the stator accommodating chamber 2 to achieve space for making way, which will not affect the installation of the stator, and the structure is compact and reasonable.

[0026] Combination Figure 1-3 As shown, the evenly divided rotor assembly 4 includes eight brushless fan rotors 8 arranged in the brushless fan housing 1, and the eight brushless fan rotors 8 are distributed in a circular array along the center point of the brushless fan housing 1, and the brushless fan rotors 8 are located in the inner circle of the brushless fan housing 1.

[0027] Specifically, the stator is driven to rotate through the cooperation between the eight brushless fan rotors 8 and the stator. The eight brushless fan rotors 8 are distributed in a circular array along the center point of the brushless fan housing 1, and adopt a uniform distribution structure, which increases the distribution density of the rotor and can further improve the rotation speed of the brushless fan.

[0028] A drop gap 9 is formed between the outer side surface of the brushless fan rotor 8 and the inner ring surface of the brushless fan housing 1 .

[0029] In this embodiment, the height gap 9 facilitates the installation of the cover structure and realizes the installation space.

[0030] Combination Figure 1 , Figure 2 As shown, a spacing area 10 is formed between two adjacent brushless fan rotors 8 , and the plurality of spacing areas 10 are distributed in a circular array along the center point of the brushless fan housing 1 .

[0031] In this embodiment, the spacing area 10 can facilitate the interaction of magnetic fields.

[0032] The stator positioning part 3 includes a stator positioning shaft 11 disposed on the brushless blower housing 1 . A weight-reducing part 12 is disposed inside the stator positioning shaft 11 . The weight-reducing part 12 passes through the stator positioning shaft 11 .

[0033] In this embodiment, during use, the stator is installed in the brushless fan housing 1, and the stator is positioned and fixed by the stator positioning shaft 11, so that the stator can rotate axially along the stator positioning shaft 11, and the weight reduction part 12 plays a role in reducing the weight of the stator positioning shaft 11.

[0034] Combination Figure 1 As shown, the weight-reducing portion 12 includes a weight-reducing through hole 13 disposed in the stator positioning shaft 11 , and the weight-reducing through hole 13 passes through the stator positioning shaft 11 .

[0035] In this embodiment, the weight-reducing through hole 13 serves to reduce the weight of the stator positioning shaft 11 .

[0036] A reinforcement collar 14 is disposed between the stator positioning shaft 11 and the brushless blower housing 1 , and the outer diameter of the reinforcement collar 14 is greater than the outer diameter of the stator positioning shaft 11 .

[0037] In this embodiment, the reinforcing convex ring 14 serves to reinforce the connection surface between the stator positioning shaft 11 and the brushless blower housing 1, thereby increasing the service life.

[0038] Combination Figure 1-3 As shown, the inner heat dissipation portion 5 includes a plurality of inner heat dissipation slots 15 arranged in the brushless fan housing 1. The plurality of inner heat dissipation slots 15 are distributed in a circular array along the center point of the brushless fan housing 1, and the inner heat dissipation slots 15 are fan-shaped.

[0039] In this embodiment, during operation, the inner side of the housing can be cooled by the inner cooling slots 15 .

[0040] Combination Figure 1-2 As shown, the outer heat dissipation portion 6 includes a plurality of outer heat dissipation slots 16 disposed in the brushless fan housing 1 , and the plurality of outer heat dissipation slots 16 are distributed in a ring array along the center point of the brushless fan housing 1 .

[0041] In this embodiment, during operation, the outer side of the housing can be cooled by the outer side cooling slots 16 .

[0042] Combination Figure 1-3 As shown, the back-connecting portion 7 includes a plurality of back-connecting protrusions 17 disposed in the brushless blower housing 1 , and the back-connecting protrusions 17 are provided with internal threads.

[0043] In this embodiment, the back connection protrusion 17 is convenient for connection with the connecting piece, and is offset from the stator accommodating chamber 2 to achieve a clearance space, which will not affect the installation of the stator and has a compact and reasonable structure.

[0044] The working principle of the utility model is:

[0045] During use, the stator is installed into the brushless fan housing 1, and the stator is positioned and fixed by the stator positioning shaft 11, so that the stator can rotate axially along the stator positioning shaft 11. The weight-reducing through hole 13 plays a role in reducing the weight of the stator positioning shaft 11. The stator is driven to rotate through the cooperation between the eight brushless fan rotors 8 and the stator. The eight brushless fan rotors 8 are distributed in a circular array along the center point of the brushless fan housing 1. The uniform distribution structure is adopted to increase the distribution density of the rotor, which can further improve the speed of the brushless fan.

[0046] The drop gap 9 facilitates the installation of the cover structure and realizes the installation space, and the spacing area 10 facilitates the interaction of the magnetic field.

[0047] The reinforcement convex ring 14 serves to strengthen the connection surface between the stator positioning shaft 11 and the brushless fan housing 1, thereby increasing the service life.

[0048] During operation, the inner side of the shell can be cooled by the inner heat dissipation groove 15, and the outer side of the shell can be cooled by the outer heat dissipation groove 16, so that a large area of ​​heat dissipation inside and outside can be achieved, thereby improving the heat dissipation effect.

[0049] The back connection protrusion 17 is convenient for connection with the connecting piece, and is offset from the stator accommodating chamber 2 to achieve a clearance space, which will not affect the installation of the stator and has a compact and reasonable structure.

[0050] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways without departing from the spirit of the present invention.

[0051] Although this article uses more terms such as brushless fan housing 1, stator accommodating chamber 2, stator positioning part 3, equally divided rotor assembly 4, inner heat dissipation part 5, outer heat dissipation part 6, back-connecting part 7, brushless fan rotor 8, drop gap 9, spacing area 10, stator positioning shaft 11, weight reduction part 12, weight reduction through hole 13, reinforcement convex ring 14, inner heat dissipation groove 15, outer heat dissipation groove 16, back connection protrusion 17, etc., it does not exclude the possibility of using other terms. The use of these terms is only for more convenient description and explanation of the essence of the utility model. It is contrary to the spirit of the utility model to interpret them as any additional restrictions.

Claims

1. A brushless fan rotor structure for a new energy vehicle, comprising a brushless fan housing (1), characterized in that: The brushless fan housing (1) has a stator accommodating chamber (2) therein; the brushless fan housing (1) is provided with a stator positioning portion (3) formed integrally with the brushless fan housing (1); the brushless fan housing (1) is provided with a plurality of equally divided rotor assemblies (4) distributed in a circular array along the center point of the brushless fan housing (1); the equally divided rotor assemblies (4) and the stator positioning portion (3) are arranged in a staggered manner; the brushless fan housing (1) is further provided with an inner heat dissipation portion (5), an outer heat dissipation portion (6) and a back-connecting portion (7); the inner heat dissipation portion (5), the outer heat dissipation portion (6) and the back-connecting portion (7) are arranged in a staggered manner.

2. The brushless fan rotor structure for new energy vehicles according to claim 1 is characterized in that: The equally divided rotor assembly (4) comprises eight brushless fan rotors (8) arranged in a brushless fan housing (1); the eight brushless fan rotors (8) are distributed in a circular array along the center point of the brushless fan housing (1); and the brushless fan rotors (8) are located in the inner ring of the brushless fan housing (1).

3. The brushless fan rotor structure for new energy vehicles according to claim 2 is characterized in that: A drop gap (9) is formed between the outer side surface of the brushless fan rotor (8) and the inner ring surface of the brushless fan housing (1).

4. The brushless fan rotor structure for new energy vehicles according to claim 3 is characterized in that: A spacing area (10) is formed between two adjacent brushless fan rotors (8), and a plurality of the spacing areas (10) are distributed in a ring array along the center point of the brushless fan housing (1).

5. The brushless fan rotor structure for new energy vehicles according to claim 4 is characterized in that: The stator positioning part (3) comprises a stator positioning shaft (11) arranged on the brushless fan housing (1), a weight reduction part (12) is arranged inside the stator positioning shaft (11), and the weight reduction part (12) passes through the stator positioning shaft (11).

6. The brushless fan rotor structure for new energy vehicles according to claim 5 is characterized in that: The weight-reducing portion (12) comprises a weight-reducing through hole (13) arranged in the stator positioning shaft (11), and the weight-reducing through hole (13) penetrates through the stator positioning shaft (11).

7. The brushless fan rotor structure for new energy vehicles according to claim 6 is characterized in that: A reinforcing convex ring (14) is provided between the stator positioning shaft (11) and the brushless fan housing (1), and the outer diameter of the reinforcing convex ring (14) is greater than the outer diameter of the stator positioning shaft (11).

8. The brushless fan rotor structure for new energy vehicles according to claim 7 is characterized in that: The inner heat dissipation portion (5) comprises a plurality of inner heat dissipation slots (15) arranged in the brushless fan housing (1); the plurality of inner heat dissipation slots (15) are distributed in a ring array along the center point of the brushless fan housing (1); and the inner heat dissipation slots (15) are fan-shaped.

9. The brushless fan rotor structure for new energy vehicles according to claim 8, characterized in that: The outer heat dissipation portion (6) comprises a plurality of outer heat dissipation slots (16) arranged in the brushless fan housing (1), and the plurality of outer heat dissipation slots (16) are distributed in a ring array along the center point of the brushless fan housing (1).

10. The brushless fan rotor structure for new energy vehicles according to claim 9, characterized in that: The back-connecting connection part (7) comprises a plurality of back-connecting protrusions (17) arranged in the housing (1) of the brushless fan, and the back-connecting protrusions (17) are provided with internal threads.

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