A hub motor with good heat dissipation

Abstract

This utility model relates to the field of hub motor technology, specifically disclosing a hub motor with good heat dissipation effect. It includes a motor housing and a mounting outer ring located outside the motor housing. A tire is mounted on the outer wall of the mounting outer ring. A rotor is disposed inside the motor housing. An air passage is provided between the motor housing and the mounting outer ring. Heat generated by the hub motor is absorbed by a heat-conducting bushing and conducted to multiple heat-conducting fins. Airflow is used to dissipate heat from the multiple heat-conducting fins located on the left and right sides. Simultaneously, multiple support plates of a fan blade structure and the air passage draw air through the air passage, which then dissipates heat from the multiple heat-conducting fins located within the air passage. Thus, through the interaction between the multiple heat-conducting fins and the air passage, the heat dissipation efficiency of the hub motor is effectively improved, increasing the service life of the hub motor.

Description

Technical Field

[0001] This utility model relates to the field of hub motor technology, and specifically discloses a hub motor with good heat dissipation effect. Background Technology

[0002] As a core drive component of electric vehicles and high-end electric bicycles, the performance of the in-wheel motor directly determines the vehicle's power and reliability. However, the in-wheel motor highly integrates the motor, braking system, and other components within the limited space of the wheel hub, resulting in poor heat dissipation. Under high load, high speed, or long-term operation conditions, the heat generated by copper and iron losses inside the motor accumulates rapidly, easily leading to overheating of the motor windings.

[0003] Existing hub motors mostly rely on natural air cooling for heat dissipation, which is inefficient. Heat inside the motor cannot be quickly transferred to the outer casing, resulting in a significant heat dissipation bottleneck. Overheating of the windings can lead to a series of problems such as magnet demagnetization, insulation material aging, and decreased efficiency, severely limiting the service life of hub motors. Utility Model Content

[0004] This invention proposes a hub motor with good heat dissipation effect. Through the cooperation between multiple heat-conducting heat sinks and air passages, the heat dissipation efficiency of the hub motor can be effectively improved, and the service life of the hub motor can be increased.

[0005] This utility model is implemented as follows: a hub motor with good heat dissipation includes a motor housing and a mounting outer ring located outside the motor housing. A tire is provided on the outer wall of the mounting outer ring. A rotor is provided inside the motor housing. An air passage is provided between the motor housing and the mounting outer ring. A heat-conducting bushing that matches the rotor is fixedly connected to the inner wall of the motor housing. A plurality of evenly distributed heat-conducting fins are fixedly connected to the outer wall of the heat-conducting bushing. The other ends of the plurality of heat-conducting fins extend to the outside of the motor housing, and a portion of the heat-conducting fins are located within the air passage.

[0006] As a preferred embodiment of the present invention, a hub motor with good heat dissipation is provided, wherein a plurality of support plates located inside the air passage and distributed in an array are fixedly connected between the motor housing and the mounting outer ring.

[0007] As a preferred embodiment of the present invention, the hub motor with good heat dissipation effect has one end of the multiple heat-conducting bushings on the left and right sides facing away from each other flush with the outer wall of the tire.

[0008] As a preferred embodiment of the present invention, a hub motor with good heat dissipation effect is provided, wherein the other end of multiple heat-conducting heat sinks located inside the air passage is fixedly connected to the inner wall of the outer ring.

[0009] As a preferred embodiment of the present invention for a hub motor with good heat dissipation, the heat-conducting bushing and the multiple heat-conducting fins are all made of copper alloy.

[0010] As a preferred embodiment of the present invention, the multiple support plates and the multiple heat-conducting fins located inside the air passage are all configured as fan blade structures.

[0011] The beneficial effects of this utility model are:

[0012] The heat generated by the hub motor is absorbed by the heat-conducting bushing and transferred to multiple heat-conducting fins. The heat is then dissipated by the airflow from the multiple heat-conducting fins located on the left and right sides. At the same time, the multiple support plates of the fan blade structure and the airflow channel draw air through the airflow channel, which in turn dissipates heat from the multiple heat-conducting fins located within the airflow channel. Through the cooperation between the multiple heat-conducting fins and the airflow channel, the heat dissipation efficiency of the hub motor is effectively improved, and the service life of the hub motor is increased. Attached Figure Description

[0013] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0014] Figure 1 This is a front cross-sectional view of the present invention.

[0015] Figure 2 This is a side view sectional structural diagram of the present invention;

[0016] Figure 3 This is a side view of the external structure of this utility model.

[0017] The markings in the diagram are: 1. Motor housing; 2. Mounting ring; 3. Tire; 4. Air passage; 5. Heat-conducting bushing; 6. Heat-conducting fins; 7. Support plate; 8. Rotor. Detailed Implementation

[0018] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0019] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0020] Please see Figure 1-3 A hub motor with good heat dissipation includes a motor housing 1 and a mounting outer ring 2 located outside the motor housing 1. A tire 3 is provided on the outer wall of the mounting outer ring 2. A rotor 8 is provided inside the motor housing 1. An air passage 4 is provided between the motor housing 1 and the mounting outer ring 2. A heat-conducting bushing 5 that matches the rotor 8 is fixedly connected to the inner wall of the motor housing 1. A plurality of evenly distributed heat-conducting fins 6 are fixedly connected to the outer wall of the heat-conducting bushing 5. The other ends of the plurality of heat-conducting fins 6 extend to the outside of the motor housing 1, and a portion of the heat-conducting fins 6 are located inside the air passage 4.

[0021] In this embodiment: when the hub motor generates heat during operation, the heat generated by the hub motor is absorbed by the heat-conducting bushing 5, and then the heat is conducted to multiple heat-conducting heat sinks 6 through the heat-conducting bushing 5. The heat is then conducted to the outside of the motor housing 1 through the multiple heat-conducting heat sinks 6 located on the left and right sides by airflow. At the same time, since the multiple support plates 7 and the multiple heat-conducting heat sinks 6 located inside the air passage 4 are all set as fan blade structures, during the rotation of the motor housing, the mounting outer ring 2 and the tire 3, the multiple support plates 7 with fan blade structures and the air passage 4 can draw air through the air passage 4, and then the air passing through the air passage 4 can dissipate heat from the multiple heat-conducting heat sinks 6 located in the air passage 4. Thus, through the mutual cooperation between the multiple heat-conducting heat sinks and the air passage, the heat dissipation efficiency of the hub motor is effectively improved, and the service life of the hub motor is increased.

[0022] As a technical optimization of this utility model, a plurality of support plates 7 located inside the air passage 4 and distributed in an array are fixedly connected between the motor housing 1 and the mounting outer ring 2.

[0023] In this embodiment, a plurality of support plates 7 located inside the air passage 4 and arranged in an array are fixedly connected between the motor housing 1 and the mounting outer ring 2. The plurality of support plates 7 can support and fix the motor housing 1 and the mounting outer ring 2.

[0024] As a technical optimization of this utility model, the opposite ends of the multiple heat-conducting bushings 5 ​​on the left and right sides are flush with the outer wall of the tire 3.

[0025] In this embodiment, the opposite ends of the multiple heat-conducting bushings 5 ​​located on the left and right sides are flush with the outer wall of the tire 3, which can prevent the multiple heat-conducting bushings 5 ​​located on the left and right sides from colliding with the vehicle frame.

[0026] As a technical optimization of this utility model, the other end of the multiple heat-conducting fins 6 located inside the air passage 4 is fixedly connected to the inner wall of the mounting outer ring 2.

[0027] In this embodiment: the other end of the multiple heat-conducting fins 6 located inside the air passage 4 is fixedly connected to the inner wall of the mounting outer ring 2. Through the multiple heat-conducting fins 6 located inside the air passage 4, heat dissipation can be achieved, while further supporting and fixing the motor housing 1 and the mounting outer ring 2.

[0028] As a technical optimization of this utility model, the heat-conducting bushing 5 and the multiple heat-conducting heat sinks 6 are both made of copper alloy.

[0029] In this embodiment, the heat-conducting bushing 5 and the multiple heat-conducting fins 6 are both made of copper alloy. Copper alloy has good thermal conductivity and can efficiently conduct the heat generated by the hub motor.

[0030] As a technical optimization of this utility model, the multiple support plates 7 and the multiple heat-conducting heat sinks 6 located inside the air passage 4 are all configured as fan blade structures.

[0031] In this embodiment, multiple support plates 7 and multiple heat-conducting fins 6 located inside the air passage 4 are all configured as fan blade structures. During the rotation of the motor housing 1, the mounting outer ring 2 and the tire 3, the multiple support plates 7 of the fan blade structure and the air passage 4 can draw air through the air passage 4, thereby dissipating heat from the multiple heat-conducting fins 6 located inside the air passage 4.

[0032] The working principle and usage process of this utility model are as follows: When the hub motor generates heat during operation, the heat generated by the hub motor is absorbed by the heat-conducting bushing 5, and then the heat is conducted to multiple heat-conducting heat sinks 6 through the heat-conducting bushing 5. The heat is then conducted to the outside of the motor housing 1 through the multiple heat-conducting heat sinks 6. Then, the heat is dissipated by the airflow through the multiple support plates 7 of the fan blade structure and the airflow channel 4. At the same time, the airflow through the airflow channel 4 can draw air through the airflow channel 4, and then dissipate heat through the multiple heat-conducting heat sinks 6 located in the airflow channel 4.

[0033] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A hub motor with good heat dissipation, comprising a motor housing (1) and a mounting outer ring (2) located outside the motor housing (1), wherein a tire (3) is disposed on the outer wall of the mounting outer ring (2), and a rotor (8) is disposed inside the motor housing (1), characterized in that: An air passage (4) is provided between the motor housing (1) and the mounting outer ring (2). A heat-conducting bushing (5) matching the rotor (8) is fixedly connected to the inner wall of the motor housing (1). A plurality of uniformly distributed heat-conducting fins (6) are fixedly connected to the outer wall of the heat-conducting bushing (5). The other end of the plurality of heat-conducting fins (6) extends to the outside of the motor housing (1), and a portion of the heat-conducting fins (6) are located in the air passage (4).

2. The hub motor with good heat dissipation according to claim 1, characterized in that: The motor housing (1) and the mounting outer ring (2) are fixedly connected by multiple support plates (7) located inside the air passage (4) and distributed in an array.

3. The hub motor with good heat dissipation according to claim 1, characterized in that: The opposite ends of the multiple heat-conducting bushings (5) located on the left and right sides are flush with the outer wall of the tire (3).

4. The hub motor with good heat dissipation according to claim 1, characterized in that: The other end of the multiple heat-conducting fins (6) located inside the air passage (4) is fixedly connected to the inner wall of the mounting outer ring (2).

5. A hub motor with good heat dissipation according to claim 1, characterized in that: The thermally conductive bushing (5) and the multiple thermally conductive heat sinks (6) are both made of copper alloy.

6. A hub motor with good heat dissipation according to claim 2, characterized in that: The multiple support plates (7) and the multiple heat-conducting fins (6) located inside the air passage (4) are all configured as fan blade structures.

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