Motor

Abstract

The utility model relates to the technical field of motors, and provides a motor which comprises a motor body, a controller and a heat dissipation piece, the controller is installed on one side of the motor body, and a heat dissipation opening is reserved between the controller and the motor body; the motor body comprises a rotor shaft, and the heat dissipation piece is installed at the end, close to the controller, of the rotor shaft. When the motor works, the rotor shaft drives the heat dissipation piece to move so as to play a role in heat dissipation. Therefore, the heat dissipation capability of the motor can be improved, and the service life of the motor is prolonged.

Description

Technical Field

[0001] This application relates to the field of electric motors, and more particularly to an electric motor. Background Technology

[0002] In traditional motor designs, the controller is typically mounted directly above or near the motor body. While this layout offers advantages in terms of compactness and ease of installation, it suffers from significant shortcomings in heat dissipation management. During operation, both the stator and rotor within the motor body release substantial amounts of heat due to resistive losses from current flow, core losses caused by magnetic field changes, and mechanical friction. Simultaneously, the controller, as a core component of the motor drive system, also generates heat during the adjustment of current and voltage and the execution of control algorithms.

[0003] When the controller is directly mounted on the motor body, the heat generated by both will combine, causing the temperature in that area to rise rapidly. This poor heat dissipation not only reduces the operating efficiency of the motor and controller and increases energy consumption, but may also trigger the overheat protection mechanism, leading to frequent motor shutdowns, affecting the stability and reliability of the system, and shortening the motor's lifespan.

[0004] Therefore, this application studies an electric motor that improves the motor's heat dissipation capacity, thereby extending the motor's service life. Utility Model Content

[0005] In order to improve the heat dissipation capacity of the motor and extend its service life, this application provides a motor.

[0006] The electric motor provided in this application adopts the following technical solution:

[0007] An electric motor includes a motor body, a controller, and a heat sink. The controller is installed on one side of the motor body, and a heat dissipation vent is provided between the controller and the motor body. The motor body includes a rotor shaft, and the heat sink is installed on the end of the rotor shaft near the controller. When the motor is working, the rotor shaft drives the heat sink to move, thereby achieving the function of heat dissipation.

[0008] By adopting the above technical solution, when the motor is working, the rotation of the rotor shaft not only transmits torque and power, but also drives the heat sink installed on it to move together. The movement of the heat sink increases airflow, thereby improving heat dissipation efficiency. At the same time, airflow through the heat dissipation vents enables heat dissipation between the motor body and the controller, which can dissipate the heat inside the controller in a timely manner and avoid the accumulation of heat between the motor body and the controller, thereby improving the motor's heat dissipation capacity and extending the motor's service life.

[0009] Optionally, the heat sink is a fan, and the fan rotation limit is set at one end of the rotor shaft.

[0010] Optionally, the controller has guides spaced circumferentially on the side facing the motor body.

[0011] By adopting the above technical solution, the guide component can play the role of guiding airflow and at the same time guide the airflow for better heat dissipation.

[0012] Optionally, the ends of the guide members that are close to each other form an air guide groove, and the center line of the air guide groove is on the same straight line as the center line of the rotor shaft.

[0013] Optionally, a diverter is provided between adjacent guide members, and the extension line of the diverter passes through the intersection of the extension lines of adjacent guide members.

[0014] Optionally, the motor body also includes a housing, which has an air collection chamber and an air outlet that communicates with the air collection chamber on the side facing the controller. The heat dissipation component is located inside the air collection chamber.

[0015] By adopting the above technical solution, the air collection cavity can concentrate the heat dissipation capacity of the heat sink to dissipate heat from the controllers and motor bodies on both sides.

[0016] Optionally, an air outlet plate can be detachably installed on one side of the housing. The air outlet plate and the housing form an air collection chamber. The air outlet plate is detachably connected to the housing, and the air outlet is opened on the air outlet plate.

[0017] Optionally, the controller has a connecting part on the side facing the motor body, and the connecting part is connected to the housing.

[0018] In summary, this application includes at least one of the following beneficial technical effects:

[0019] 1. When the motor is working, the rotation of the rotor shaft not only transmits torque and power, but also drives the heat sink installed on it to move. The movement of the heat sink increases airflow, thereby improving heat dissipation efficiency. At the same time, airflow through the heat dissipation vents enables heat dissipation between the motor body and the controller. This allows the heat inside the controller to be discharged in a timely manner, and also avoids the accumulation of heat between the motor body and the controller, thereby improving the motor's heat dissipation capacity and extending the motor's service life.

[0020] 2. The guide component can guide the airflow and promote better heat dissipation;

[0021] 3. The air collection chamber can concentrate the heat dissipation capacity of the heat sink to dissipate heat from the controllers and motor bodies on both sides. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of an electric motor according to an embodiment of this application;

[0023] Figure 2 This is a cross-sectional schematic diagram of an electric motor according to an embodiment of this application;

[0024] Figure 3 This is a schematic diagram illustrating the structure of the motor body in an embodiment of this application;

[0025] Figure 4 This is a schematic diagram of the structure of an electric motor body with the air outlet plate removed, according to an embodiment of this application.

[0026] Figure 5 This is a schematic diagram of the controller structure in a motor according to an embodiment of this application.

[0027] Reference numerals in the attached drawings: 1. Motor body; 1a. Rotor shaft; 1b. Housing; 2. Controller; 3. Heat sink; 4. Heat sink vent; 5. Air collection chamber; 6. Air outlet; 7. Air outlet plate; 8. Guide component; 9. Air guide groove; 10. Flow divider; 11. Connecting part. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0029] This application discloses an electric motor. (Refer to...) Figure 1 and Figure 2 The motor includes a motor body 1, a controller 2 and a heat sink 3. The controller 2 is installed on one side of the motor body 1, and a heat sink 4 is provided between the controller 2 and the motor body 1 to allow air to circulate and dissipate heat from the controller 2.

[0030] Reference Figure 2 The motor body 1 includes a rotor shaft 1a, and a heat sink 3 is installed at one end of the rotor shaft 1a near the controller 2. When the motor is working, the rotor shaft 1a drives the heat sink 3 to move, thereby achieving heat dissipation. By setting the heat sink 3 between the controller 2 and the motor body, heat can be dissipated from both sides simultaneously, and heat accumulation on both sides is avoided, resulting in better heat dissipation. This reduces the heat generated during motor operation, better protects internal components, and extends the service life of the motor.

[0031] In some embodiments, the motor body 1 further includes a housing 1b, within which an air collecting cavity 5 is formed, and an air outlet 6 communicating with the air collecting cavity 5 is formed on the side facing the controller 2. The heat sink 3 is located within the air collecting cavity 5. Installing the heat sink 3 through the air collecting cavity 5 saves space and provides better heat dissipation.

[0032] In some embodiments, an air outlet plate 7 is detachably provided on one side of the housing 1b. In this embodiment, the air outlet plate 7 is screwed to the housing 1b, and the air outlet plate 7 and the housing 1b form an air collection cavity 5, which makes it easy to install the heat sink 3. The air outlet 6 is opened on the air outlet plate 7.

[0033] Reference Figure 4 In some embodiments, the heat sink 3 is a fan, and the fan rotation limit is set at one end of the rotor shaft 1a. When the motor is working, the rotor shaft 1a rotates and drives the fan to rotate, drawing air from the heat sink 4 to cool the controller 2, and the fan blows air to one side of the motor body 1 to cool the motor body 1. Therefore, it can achieve the effect of cooling both the controller 2 and the motor body 1 at the same time; and by using the rotor shaft 1a that rotates when the motor is working to drive the fan to rotate at the same time, the power source can be saved.

[0034] Reference Figure 5 In some embodiments, the controller 2 is integrally connected with guide members 8 at even intervals along the circumference on the side facing the motor body 1. The width of the guide members 8 gradually increases from the center of the controller 2 to the outer periphery, so as to better guide the airflow and make the airflow pass through the controller 2 evenly, so as to better dissipate heat.

[0035] In some embodiments, the ends of the guide members 8 that are close to each other form air guide grooves 9, which cooperate with... Figure 2 The centerline of the air guide slot 9 is on the same straight line as the centerline of the rotor shaft 1a. After the airflow enters the air guide slot 9 along the guide member 8 and is concentrated, it is drawn to one side of the motor body 1 by the fan, so that while cooling the controller 2, the airflow can be better delivered to the side of the motor body 1 for cooling.

[0036] In some embodiments, a diverter 10 is provided between adjacent guide members 8, and the diverter 10 is also integrally provided with the controller 2. The length of the diverter 10 is shorter than the length of the guide member 8, and the extension line of the diverter 10 passes through the intersection of the extension lines of adjacent guide members 8. The diverter 10 can better guide the concentrated airflow into the air guide trough 9, and better uniformly dissipate heat from the controller 2.

[0037] In some embodiments, the controller 2 has a connecting portion 11 on the side facing the motor body 1. The connecting portion 11 is integrally connected to the controller 2. At least two connecting portions 11 are provided and are located at one end of some guide members 8 near the outer periphery of the controller 2. Specifically, two connecting portions 11 are grouped together, and two of the two in a group are respectively connected to two adjacent guide members 8. Four groups are evenly spaced along the periphery of the controller 2. The connecting portion 11 is detachably connected to the housing 1b. The controller 2 is screwed to the housing 1b through the connecting portion 11, which facilitates the installation and removal of the controller 2 from the housing 1b.

[0038] The implementation principle of an electric motor according to an embodiment of this application is as follows: When the motor is working, the rotation of the rotor shaft 1a not only transmits torque and power, but also drives the heat sink 3 installed on it to move together. The movement of the heat sink 3 increases airflow, thereby improving heat dissipation efficiency. At the same time, airflow is achieved through the heat dissipation port 4, realizing heat dissipation between the motor body 1 and the controller 2. The heat inside the controller 2 can be discharged in time, and the mutual accumulation of heat between the motor body 1 and the controller 2 is also avoided, thereby improving the heat dissipation capacity of the motor and extending the service life of the motor.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An electric motor, characterized in that: The device includes a motor body (1), a controller (2) and a heat sink (3). The controller (2) is installed on one side of the motor body (1), and a heat sink (4) is provided between the controller (2) and the motor body (1). The motor body (1) includes a rotor shaft (1a), and the heat sink (3) is installed on the end of the rotor shaft (1a) near the controller (2). When the motor is working, the rotor shaft (1a) drives the heat sink (3) to move, thereby playing a role in heat dissipation.

2. The motor according to claim 1, characterized in that: The heat sink (3) is a fan, and the fan rotation limit is set at one end of the rotor shaft (1a).

3. The motor according to claim 1, characterized in that: The controller (2) has guides (8) connected at circumferential intervals on the side facing the motor body (1).

4. The motor according to claim 3, characterized in that: The guide members (8) form an air guide groove (9) at their close ends, and the center line of the air guide groove (9) is on the same straight line as the center line of the rotor shaft (1a).

5. The motor according to claim 3, characterized in that: A diverter (10) is provided between each adjacent guide (8), and the extension line of the diverter (10) passes through the intersection of the extension lines of the adjacent guide (8).

6. The motor according to claim 1, characterized in that: The motor body (1) also includes a housing (1b), an air collection cavity (5) is provided inside the housing (1b), and an air outlet (6) is provided on the side facing the controller (2) that communicates with the air collection cavity (5). The heat sink (3) is located inside the air collection cavity (5).

7. The motor according to claim 6, characterized in that: An air outlet plate (7) is detachably provided on one side of the housing (1b). The air outlet plate (7) and the housing (1b) form an air collection chamber (5). The air outlet plate (7) is detachably connected to the housing (1b). An air outlet (6) is opened on the air outlet plate (7).

8. The motor according to claim 6, characterized in that: The controller (2) has a connecting part (11) on the side facing the motor body (1), and the connecting part (11) is connected to the housing (1b).

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