A dual-core hub motor for electric vehicles

Abstract

The utility model discloses a dual-core wheel hub motor for an electric vehicle, comprising a rotor iron ring body, a wheel hub end cover body, a disc brake end cover body and a motor shaft, a heat dissipation component, the heat dissipation component comprising an air collecting pipe detachably mounted in the middle of the inner wall of the wheel hub end cover body, and an air collecting cylinder arranged at the bottom of the air collecting pipe, a fixing component for stabilizing and buffering the air collecting cylinder is arranged on the outside of the air collecting cylinder, an exhaust pipe is arranged in a circular shape and at equal intervals on the outer wall of the air collecting pipe located on one side of the wheel hub end cover body, and an air guide pipe for guiding hot air is arranged on the outer wall of the air collecting cylinder located in the middle of one end of the air collecting pipe. By arranging a heat dissipation component inside the wheel hub end cover body, the centrifugal force generated by the wheel hub end cover body during high-speed operation is used to drive the blocking block away from the exhaust pipe, so as to dredge the exhaust end of the exhaust pipe and discharge the hot air. By using this method, the failure rate of the dual-core wheel hub motor for electric vehicles can be reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of wheel hub motors, and in particular relates to a double-core wheel hub motor for an electric vehicle. Background Art

[0002] The wheel hub motor is a motor designed by integrating the car's "power system, transmission system, and brake system". The working principle of the wheel hub motor is a permanent magnet synchronous motor. "Wheel side motor" and "wheel hub motor" refer to motors installed in different positions of the vehicle. The wheel hub motor has many functions, including load bearing and driving, electronic differential control, brake energy recovery, etc.

[0003] The prior art electric vehicle wheel hub motor is usually a single-core structure, that is, only one set of rotor magnets and one set of stators opposite to the rotor magnets are arranged therein. Electric vehicles using such a single-core wheel hub motor have a slow speed when climbing a slope, and at the same time, the current is large when climbing a slope, which will shorten the service life of the battery.

[0004] In response to the above problems, the China Patent Network has disclosed a patent document with publication number CN203027106U, which adopts two sets of stators and two sets of magnetic steels, and its starting torque and climbing performance can be doubled, so that the car can reach the maximum speed in the shortest time. However, due to the use of two sets of stators and two sets of magnetic steels, the dual-core hub motor of the electric vehicle heats up quickly during use, causing a large amount of heat to accumulate inside it. In addition, the hub end cover lacks an effective heat dissipation mechanism. Therefore, the failure rate of the dual-core hub motor of the electric vehicle is easily increased. For this reason, a dual-core hub motor of an electric vehicle is provided. Utility Model Content

[0005] The utility model aims to provide a dual-core wheel hub motor for an electric vehicle to solve the technical problems raised in the background technology.

[0006] To achieve the above-mentioned purpose, the specific technical scheme of the utility model is as follows: a dual-core wheel hub motor of an electric vehicle, comprising a rotor iron ring body, a wheel hub end cover body, a disc brake end cover body and a motor shaft, wherein the wheel hub end cover body is arranged at one end of the rotor iron ring body, and the disc brake end cover body is arranged at the other end of the rotor iron ring body, and the motor shaft is arranged in the middle of the rotor iron ring body, and also includes: a heat dissipation component for diffusing the hot air accumulated inside the rotor iron ring body, the heat dissipation component comprises an air collecting pipe detachably mounted in the middle of the inner wall of the wheel hub end cover body, and an air collecting cylinder arranged at the bottom of the air collecting pipe, a fixing component for stabilizing and buffering the air collecting cylinder is arranged on the outside of the air collecting cylinder, an outer wall of the air collecting pipe is located on one side of the wheel hub end cover body and an exhaust pipe is arranged at equal intervals in a ring shape, an outer wall of the air collecting cylinder is located in the middle of one end of the air collecting pipe and an air guide pipe for guiding hot air is arranged, a turbine fan is installed inside the air collecting cylinder, and an air inlet is opened in a ring shape and equal intervals through the outer wall of the air collecting cylinder away from the position of the turbine fan.

[0007] Preferably, the wheel hub end cover body and the disc brake end cover body are both connected to the rotor iron ring body through fasteners, and the wheel hub end cover body and the disc brake end cover body are both rotatably arranged with the motor shaft through bearings.

[0008] Preferably, the gas gathering pipe is ring-shaped, the air guide pipe is trumpet-shaped, the exhaust pipe and the gas gathering pipe are integrally formed, one end of the air guide pipe is connected to the gas gathering cylinder, and the other end of the air guide pipe is connected to the gas gathering pipe, and the inner cavity of the gas gathering cylinder, the inner cavity of the air guide pipe, the inner cavity of the gas gathering pipe, and the inner cavity of the exhaust pipe are connected.

[0009] Preferably, rubber rings for sealing the joints are provided on both sides of the inner wall of the gas collecting cylinder, and a cylinder cover is detachably provided on the middle part of the outer wall of the gas collecting cylinder away from one end of the air guide pipe.

[0010] Preferably, the outer wall of the hub end cover body is provided with a track groove at each exhaust pipe position, and a blocking block for blocking and clearing the exhaust end of the exhaust pipe is slidably mounted on the inner wall of the track groove, and a counterweight block is arranged on the top of the blocking block.

[0011] Preferably, the inner wall of the track groove is provided with a guide column for guiding and limiting the blocking block, and the outer wall of the guide column is wound with an extrusion spring for resetting the blocking block, one end of the extrusion spring is connected to the blocking block, and the other end of the extrusion spring is connected to the hub end cover body.

[0012] Preferably, the fixing assembly includes a ring arranged in the middle of the gas collecting cylinder, and a support rod arranged at the bottom of the outer wall of the ring, a buffer ring for buffering and protecting the gas collecting cylinder is arranged in the middle of the inner wall of the ring, and the support rod is designed in an L-shaped structure, one end of the support rod is connected to the ring, and the other end of the support rod is connected to the hub end cover body.

[0013] The dual-core wheel hub motor of an electric vehicle of the utility model has the following advantages:

[0014] 1. The utility model provides a heat dissipation component inside the wheel hub end cover body, and utilizes the centrifugal force generated by the wheel hub end cover body during high-speed operation to drive the blocking block away from the exhaust pipe, thereby clearing the exhaust end of the exhaust pipe and achieving the discharge of hot air. In this way, the failure rate of the dual-core wheel hub motor of the electric vehicle can be reduced.

[0015] 2. The utility model can stabilize and buffer the gas collecting cylinder during operation and improve the overall stability by setting a fixing component. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is an enlarged view of the local structure of the utility model;

[0018] Figure 2 It is a side view of the local structure of the utility model;

[0019] Figure 3 It is an overall plan sectional view of the utility model.

[0020] Explanation of marks in the figure: 1. Rotor iron ring body; 2. Hub end cover body; 3. Disc brake end cover body; 4. Motor shaft; 5. Heat dissipation assembly; 501. Track groove; 502. Extrusion spring; 503. Guide column; 504. Counterweight block; 505. Blocking block; 506. Air collecting pipe; 507. Air collecting cylinder; 508. Exhaust pipe; 509. Air guide pipe; 510. Turbine fan; 511. Cylinder cover; 512. Air inlet; 513. Rubber ring; 6. Fixing assembly; 601. Support rod; 602. Ring; 603. Buffer ring. DETAILED DESCRIPTION

[0021] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0022] In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention 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 cannot be understood as a limitation on the embodiments of the present invention.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0024] In the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0025] The disclosure below provides many different embodiments or examples for realizing different structures of the embodiments of the present utility model. In order to simplify the disclosure of the embodiments of the present utility model, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the embodiments of the present utility model. In addition, the embodiments of the present utility model can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0026] In order to better understand the purpose, structure and function of the utility model, the following is a further detailed description of a dual-core hub motor for an electric vehicle of the utility model in conjunction with the accompanying drawings.

[0027] like Figure 1-3As shown, the utility model is a dual-movement hub motor of an electric vehicle, comprising a rotor iron ring body 1, a hub end cover body 2, a disc brake end cover body 3 and a motor shaft 4, the hub end cover body 2 is arranged at one end of the rotor iron ring body 1, and the disc brake end cover body 3 is arranged at the other end of the rotor iron ring body 1, the hub end cover body 2 and the disc brake end cover body 3 are both connected to the rotor iron ring body 1 through fasteners, the motor shaft 4 is arranged in the middle of the rotor iron ring body 1, the hub end cover body 2 and the disc brake end cover body 3 are both rotatably arranged with the motor shaft 4 through bearings, as a prior art, this case will not be repeated, the device also includes: a heat dissipation component 5 for diffusing the hot air accumulated inside the rotor iron ring body 1.

[0028] Specifically, the heat dissipation component 5 includes an air collecting pipe 506 detachably mounted on the middle of the inner wall of the hub end cover body 2 for collecting hot air, and an air collecting cylinder 507 arranged at the bottom of the air collecting pipe 506 for introducing hot air. The air collecting pipe 506 is annular, and a fixing component 6 for stabilizing and buffering the air collecting cylinder 507 is arranged on the outside of the air collecting cylinder 507. The outer wall of the air collecting pipe 506 is located on one side of the hub end cover body 2 and is provided with exhaust pipes 508 in annular shape and at equal intervals for diverting and discharging the collected hot air. The exhaust pipe 508 is integrally formed with the air collecting pipe 506. The outer wall of the air collecting cylinder 507 is located in the middle of one end of the air collecting pipe 506 and is provided with an air guide pipe 509 for guiding hot air. The air guide pipe 509 is trumpet-shaped. One end of 509 is connected to the gas collecting cylinder 507, and the other end of the air guide pipe 509 is connected to the gas collecting pipe 506. The inner cavity of the gas collecting cylinder 507, the inner cavity of the air guide pipe 509, the inner cavity of the gas collecting pipe 506, and the inner cavity of the exhaust pipe 508 are interconnected. A turbine fan 510 is installed inside the gas collecting cylinder 507 for injecting hot air into the gas collecting pipe 506 through the air guide pipe 509. Rubber rings 513 for sealing the joints are arranged on both sides of the inner wall of the gas collecting cylinder 507. Air inlets 512 are arranged in a circular shape and at equal intervals on the outer wall of the gas collecting cylinder 507 away from the turbine fan 510 for cooperating with the turbine fan 510 to introduce hot air into the gas collecting cylinder 507. A cylinder cover 511 is detachably provided in the middle of one end of the outer wall of the gas collecting cylinder 507 away from the air guide pipe 509.

[0029] Specifically, the outer wall of the hub end cover body 2 is provided with a track groove 501 at the position of each exhaust pipe 508, and the inner wall of the track groove 501 is slidably installed with a blocking block 505 for blocking and clearing the exhaust end of the exhaust pipe 508, and a counterweight block 504 is arranged on the top of the blocking block 505, and the inner wall of the track groove 501 is provided with a guide column 503 for guiding and limiting the blocking block 505, and the outer wall of the guide column 503 is wound with an extrusion spring 502 for resetting the blocking block 505, one end of the extrusion spring 502 is connected to the blocking block 505, and the other end of the extrusion spring 502 is connected to the hub end cover body 2.

[0030] The fixing assembly 6 includes a collar 602 arranged in the middle of the gas collecting cylinder 507 for wrapping the gas collecting cylinder 507, and a support rod 601 arranged at the bottom of the outer wall of the collar 602 for supporting the collar 602. A buffer ring 603 for buffering and protecting the gas collecting cylinder 507 is arranged in the middle of the inner wall of the collar 602. The support rod 601 is designed in an L-shaped structure. One end of the support rod 601 is connected to the collar 602, and the other end of the support rod 601 is connected to the hub end cover body 2.

[0031] According to the above, the utility model is provided with a heat dissipation component 5 inside the wheel hub end cover body 2, and utilizes the centrifugal force generated by the wheel hub end cover body 2 during high-speed operation to drive the blocking block 505 away from the exhaust pipe 508, so as to clear the exhaust end of the exhaust pipe 508 and discharge the hot air. In this way, the failure rate of the dual-movement hub motor of the electric vehicle can be reduced; the utility model is provided with a fixing component 6, so as to stabilize and buffer the gas collecting cylinder 507 during operation and improve the overall stability.

[0032] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A dual-core wheel hub motor for an electric vehicle, comprising a rotor iron ring body (1), a wheel hub end cover body (2), a disc brake end cover body (3) and a motor shaft (4), wherein the wheel hub end cover body (2) is arranged at one end of the rotor iron ring body (1), and the disc brake end cover body (3) is arranged at the other end of the rotor iron ring body (1), and the motor shaft (4) is arranged in the middle of the rotor iron ring body (1), characterized in that: Also includes: A heat dissipation component (5) for diffusing hot air accumulated inside a rotor iron ring body (1), the heat dissipation component (5) comprising an air collecting pipe (506) detachably mounted on the middle of the inner wall of a hub end cover body (2), and an air collecting cylinder (507) arranged at the bottom of the air collecting pipe (506), a fixing component (6) for stabilizing and buffering the air collecting cylinder (507) being arranged outside the air collecting cylinder (507), an exhaust pipe (508) being arranged in a circular shape and at equal intervals on the outer wall of the air collecting pipe (506) located on one side of the hub end cover body (2), an air guide pipe (509) for guiding hot air being arranged on the outer wall of the air collecting cylinder (507) located in the middle of one end of the air collecting pipe (506), a turbine fan (510) being installed inside the air collecting cylinder (507), and an air inlet (512) being arranged in a circular shape and at equal intervals on the outer wall of the air collecting cylinder (507) away from the turbine fan (510).

2. The dual-core hub motor for an electric vehicle according to claim 1, characterized in that: The wheel hub end cover body (2) and the disc brake end cover body (3) are both connected to the rotor iron ring body (1) via fasteners, and the wheel hub end cover body (2) and the disc brake end cover body (3) are both rotatably arranged with the motor shaft (4) via bearings.

3. The dual-core hub motor for an electric vehicle according to claim 1, characterized in that: The gas gathering pipe (506) is ring-shaped, the air guide pipe (509) is trumpet-shaped, the exhaust pipe (508) and the gas gathering pipe (506) are integrally formed, one end of the air guide pipe (509) is connected to the gas gathering cylinder (507), and the other end of the air guide pipe (509) is connected to the gas gathering pipe (506), and the inner cavity of the gas gathering cylinder (507), the inner cavity of the air guide pipe (509), the inner cavity of the gas gathering pipe (506), and the inner cavity of the exhaust pipe (508) are connected.

4. The dual-core wheel hub motor for an electric vehicle according to claim 1, characterized in that: Rubber rings (513) for sealing the joints are arranged on both sides of the inner wall of the gas collecting cylinder (507), and a cylinder cover (511) is detachably arranged at the middle of one end of the outer wall of the gas collecting cylinder (507) away from the air guide pipe (509).

5. The dual-core wheel hub motor for an electric vehicle according to claim 1, characterized in that: The outer wall of the hub end cover body (2) is provided with a track groove (501) at the position of each exhaust pipe (508), and a blocking block (505) for blocking and clearing the exhaust end of the exhaust pipe (508) is slidably mounted on the inner wall of the track groove (501), and a counterweight block (504) is arranged on the top of the blocking block (505).

6. The dual-core wheel hub motor for an electric vehicle according to claim 5, characterized in that: The inner wall of the track groove (501) is provided with a guide column (503) for guiding and limiting the blocking block (505), and the outer wall of the guide column (503) is wound with a compression spring (502) for resetting the blocking block (505), one end of the compression spring (502) is connected to the blocking block (505), and the other end of the compression spring (502) is connected to the hub end cover body (2).

7. The dual-core wheel hub motor for an electric vehicle according to claim 1, characterized in that: The fixing assembly (6) comprises a collar (602) arranged in the middle of the gas collecting cylinder (507), and a support rod (601) arranged at the bottom of the outer wall of the collar (602); a buffer ring (603) for buffering and protecting the gas collecting cylinder (507) is arranged in the middle of the inner wall of the collar (602); the support rod (601) is designed in an L-shaped structure; one end of the support rod (601) is connected to the collar (602), and the other end of the support rod (601) is connected to the hub end cover body (2).

Images