An electric machine that is easy to dissipate heat
By designing the stator to be directly fixed on the stator base plate in the motor, and utilizing the structure of multiple accommodating spaces and heat pipes, the problem of the motor's inability to effectively dissipate heat is solved, achieving efficient heat dissipation and sealing protection of the motor.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI XILI ELECTRONICS TECH CO LTD
- Filing Date
- 2026-06-17
- Publication Date
- 2026-07-24
AI Technical Summary
The existing motor structure cannot effectively, evenly and quickly dissipate heat from the sealed motor housing, resulting in heat accumulation and reduced motor performance.
A motor structure including a stator, an outer rotor, a stator base plate, a cover plate, and heat pipes was designed. The stator is directly fixed to the stator base plate, and multiple accommodating spaces and heat pipes are used to uniformly transfer and dissipate heat. A pressure regulating mechanism is combined to prevent the sealing structure from failing.
This achieves uniform and rapid heat dissipation from the motor, improving the motor's heat dissipation efficiency and service life, while also reducing wiring costs and preventing external debris from entering.
Smart Images
Figure CN224555397U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of motor structure technology, specifically to a motor that is easy to dissipate heat. Background Technology
[0002] Due to the development of new energy technologies, electric motorcycles have received increasing attention. Within an electric motorcycle, the motor is one of the most important structural components. In current technology, because the motor is generally housed within the casing near the wheel, it often encounters harsh environments during operation. Therefore, the motor has relatively strict requirements for its sealing performance.
[0003] Motors generate a lot of heat when they are running, and this amount of heat is directly proportional to the motor's power; the higher the power, the more heat is generated. Therefore, a heat dissipation structure must be installed inside the motor.
[0004] When dissipating heat, the heat inside the motor is usually drawn to the casing through natural heat dissipation, and then the heat is dissipated.
[0005] However, due to the strict sealing of traditional motor structures, it is not possible to effectively and quickly guide the heat generated by the motor to the housing. As a result, heat will accumulate inside the motor, reducing its performance. Utility Model Content
[0006] This invention provides a heat-dissipating motor that can dissipate heat evenly and quickly.
[0007] To achieve the above objectives, this utility model provides the following technical solution: This utility model provides a heat-dissipating motor, including a stator, an outer rotor, a stator base plate, a first cover plate, a second cover plate, and a rotating shaft. The rotating shaft is rotatably inserted inside the stator. The stator is fixed to the stator base plate. The outer rotor covers the stator from the side away from the stator base plate and is fixedly connected to the rotating shaft. The first cover plate covers the stator and the outer rotor from the side away from the stator and is connected to the stator base plate. The second cover plate is connected to the stator base plate from the side away from the stator. The plates are connected, and a first accommodating space is formed between the first cover plate and the stator base plate. A second accommodating space is formed between the second cover plate and the stator base plate. A stator support plate is formed on the side of the stator base plate facing the outer rotor. The stator support plate is arranged around the rotating shaft. The inner surface of the stator is supported on the stator support plate. A heat-conducting pipe is provided on the inner sidewall of the stator support plate. The heat-conducting pipe extends along the axial direction of the rotating shaft and extends from the side of the stator close to the outer rotor to the side of the stator away from the outer rotor.
[0008] Preferably, a plurality of cutouts are provided on the stator substrate, and the first accommodating space and the second accommodating space are connected through the cutouts.
[0009] Preferably, a first connecting plate is formed on the side of the stator substrate away from the outer rotor, protruding away from the stator substrate, and a plurality of heat dissipation fins are spaced apart on the first connecting plate.
[0010] Preferably, a first connecting plate is formed on the side of the stator base plate away from the outer rotor, protruding away from the stator base plate. The heat-dissipating motor further includes a support arm for connecting to the vehicle body. The support arm is connected to the stator base plate. The second cover plate is connected to the first connecting plate and the support arm. A second accommodating space is formed between the second cover plate and the first connecting plate. A third accommodating space is formed between the support arm and the second cover plate. The third accommodating space communicates with the second accommodating space.
[0011] Preferably, the heat-dissipating motor further includes a circuit board for controlling the heat-dissipating motor, the circuit board being disposed within the third accommodating space and fixed to one of the support arm and the second cover plate.
[0012] Preferably, the heat-dissipating motor further includes a pressure regulating mechanism, which includes a fixed cylinder and a piston. The fixed cylinder is disposed inside the heat-dissipating motor, and one end of the fixed cylinder is connected to the outside through a first connecting hole. The piston is slidably disposed inside the fixed cylinder along the axis of the fixed cylinder. The fixed cylinder is also provided with a second connecting hole that communicates with the interior of the heat-dissipating motor. The first connecting hole and the second connecting hole are respectively disposed on both sides of the piston.
[0013] Preferably, the second connecting hole is disposed on the side wall of the fixed cylinder at the end away from the first connecting hole.
[0014] Preferably, a filter screen is provided on the first connecting hole.
[0015] In summary, in this invention, since the stator is directly fixed to the stator substrate, the heat generated on the stator can be transferred to the stator substrate relatively evenly and quickly, and then dissipated through the second accommodating space and the second cover plate. That is, this easily heat-dissipating motor can evenly and quickly draw out the heat from within the motor.
[0016] Furthermore, by utilizing the space within the support arm to connect the third accommodating space with the second accommodating space, the effective space inside the motor is expanded, thereby improving heat dissipation efficiency.
[0017] Furthermore, the inclusion of a third accommodating space provides room for the circuit board layout, ensuring heat dissipation while shortening the length of connecting lines and reducing costs.
[0018] Furthermore, the air pressure regulating mechanism can prevent the motor's sealing structure from failing due to a rapid drop in air pressure, prevent the intake of external debris, and improve the motor's service life.
[0019] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description
[0020] Figure 1 The diagram shown is a schematic diagram of the shaft side structure of a motor that is easy to dissipate heat according to an embodiment of the present invention.
[0021] Figure 2 As shown Figure 1 A front view schematic diagram of a motor that facilitates heat dissipation.
[0022] Figure 3 As shown Figure 2 Schematic diagram of the cross-sectional structure in the middle III-III direction.
[0023] Figure 4 As shown Figure 1 A schematic diagram of the axle side structure of the motor with easy heat dissipation after removing the tires and the second cover.
[0024] Figure 5 As shown Figure 4 A schematic diagram of the shaft side structure of a motor that is easy to dissipate heat, after removing the fan mechanism.
[0025] Figure 6 As shown Figure 4 A schematic diagram of the axial structure of the middle stator substrate and support arm.
[0026] Figure 7 As shown Figure 1 A schematic diagram of the axial structure of the middle stator mounted on the stator base plate.
[0027] Figure 8 As shown Figure 7 A schematic diagram of the axial structure of the middle stator substrate.
[0028] Figure 9 As shown Figure 1 Schematic diagram of the shaft side structure of the inner and outer rotors.
[0029] Figure 10 As shown Figure 2 A schematic diagram of the cross-sectional structure in the XX direction.
[0030] Reference numerals: 10, stator; 20, outer rotor; 21, passive fan blade; 22, connecting plate; 23, magnetic ring; 24, magnet; 25, sealing ring; 30, stator base plate; 31, hollowed-out part; 32, first connecting plate; 321, heat dissipation fins; 33, stator support plate; 331, heat pipe; 332, mounting groove; 34, second connecting plate; 41, first cover plate; 42, second cover plate; 43, rotating shaft; 51, first accommodating space; 52, second accommodating space; 53, third accommodating space; 60, support arm; 61, circuit board; 62, first connecting hole; 621, filter screen; 70, fan mechanism; 71, air duct isolation cover; 72, active fan; 80, air pressure regulating mechanism; 81, fixed cylinder; 811, second connecting hole; 82, piston. Detailed Implementation
[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0032] This invention provides a heat-dissipating motor that can dissipate heat evenly and quickly.
[0033] like Figures 1 to 3 As shown, the heat-dissipating motor provided in this embodiment includes a stator 10, an outer rotor 20, a stator base plate 30, a first cover plate 41, a second cover plate 42, and a rotating shaft 43. The rotating shaft 43 is rotatably inserted into the stator 10, and the stator 10 is fixed to the stator base plate 30. The outer rotor 20 covers the stator 10 from the side away from the stator base plate 30 and is fixedly connected to the rotating shaft 43. The first cover plate 41 covers the stator 10 and the outer rotor 20 from the side away from the stator 10 and is connected to the stator base plate 30. The second cover plate 42 is connected to the stator base plate 30 from the side away from the stator 10. A first accommodating space 51 for accommodating the stator 10 and the outer rotor 20 is formed between the first cover plate 41 and the stator base plate 30. A second accommodating space 52 is formed between the second cover plate 42 and the stator base plate 30. The pivot 43 passes through the first cover plate 41 to extend out of the first accommodating space 51.
[0034] In this embodiment, the stator 10 is supported on the rotating shaft 43, for example, by bearings. The outer rotor 20 is connected to the rotating shaft 43. When the motor is working, the stator 10 drives the outer rotor 20 to rotate, and the outer rotor 20 transmits power through the rotating shaft 43. In this embodiment, the stator 10 is directly fixed to the stator substrate 30. The stator 10 and the outer rotor 20 are housed in the first accommodating space 51, and a second accommodating space 52 is formed on the side of the stator substrate 30 away from the stator 10 and the outer rotor 20. During operation, the heat generated by the stator 10 (for ease of display, the stator coils on the stator 10 are omitted in this embodiment) is directly conducted to the stator substrate 30, and then transferred from the stator substrate 30 to the second accommodating space 52. The heat in the second accommodating space 52 is dissipated from the second cover plate 42.
[0035] In this embodiment, since the stator 10 is directly fixed to the stator substrate 30, the heat generated on the stator 10 can be transferred to the stator substrate 30 relatively evenly and quickly, and then dissipated through the second accommodating space 52 and the second cover plate 42. That is, the easily heat-dissipating motor can evenly and quickly draw out the heat inside the motor.
[0036] Furthermore, in this embodiment, a plurality of cutout portions 31 are provided on the stator substrate 30 to facilitate communication between the first accommodating space 51 and the second accommodating space 52 and to facilitate heat exchange.
[0037] like Figures 3 to 6 As shown, in this embodiment, a first connecting plate 32 is formed protruding from the side of the stator substrate 30 away from the outer rotor 20, in a direction away from the stator substrate 30. The first connecting plate 32 is disposed around the rotating shaft 43 on the stator substrate 30. A plurality of heat dissipation fins 321 are spaced apart on the first connecting plate 32. Heat on the stator substrate 30 can be dissipated more quickly and evenly through the first connecting plate 32 and the heat dissipation fins 321.
[0038] Please continue to refer to Figures 3 to 8 In this embodiment, a stator support plate 33 is formed on the side of the stator substrate 30 facing the outer rotor 20. The stator support plate 33 is arranged around the rotating shaft 43, and the inner surface of the stator 10, that is, the surface near the rotating shaft 43, is supported on the stator support plate 33. With the stator support plate 33, the stator support plate 33 contacts the stator 10 from the inner sidewall of the stator 10, while the stator substrate 30 contacts the stator 10 from the side of the stator 10 away from the outer rotor 20. This is more conducive to the heat transfer on the stator 10.
[0039] Furthermore, a heat-conducting pipe 331 is provided on the inner wall of the stator support plate 33, that is, on the surface near the rotating shaft 43. The heat-conducting pipe 331 extends along the axial direction of the rotating shaft 43 and extends from the side of the stator 10 near the outer rotor 20 to the side of the stator 10 away from the outer rotor 20. This is to transfer the heat from the side of the stator 10 away from the stator substrate 30 to the stator substrate 30 more quickly.
[0040] More specifically, an installation groove 332 is provided on the inner side wall of the stator support plate 33, and the aforementioned heat pipe 331 is disposed in the installation groove 332.
[0041] In this embodiment, the heat pipe 331 can be made of a material with good thermal conductivity, such as graphite or copper, so that heat can be transferred more quickly.
[0042] In other embodiments, the heat pipe 331 may also extend directly to the first connecting plate 32 or the second cover plate 42.
[0043] Please continue to refer to Figures 3 to 10 A second connecting plate 34 is also provided on the stator substrate 30. The second connecting plate 34 is arranged around the rotating shaft 43. The first cover plate 41 is connected to the second connecting plate 34 to form a first accommodating space 51 between the first cover plate 41 and the stator substrate 30.
[0044] Furthermore, the heat-dissipating motor also includes a support arm 60 for connection to the vehicle body, and the support arm 60 is connected to the stator base plate 30. In this embodiment, the support arm 60 and the stator base plate 30 are integrally formed. The second cover plate 42 is connected to the first connecting plate 32 and the support arm 60, and a second accommodating space 52 is formed between the second cover plate 42 and the first connecting plate 32. A third accommodating space 53 is formed between the support arm 60 and the second cover plate 42, and the third accommodating space 53 communicates with the second accommodating space 52.
[0045] That is, in this embodiment, the first connecting plate 32 can, on the one hand, dissipate heat to the outside through the heat dissipation fins 321 provided thereon, and on the other hand, it is connected to the second cover plate 42 to seal the second accommodating space 52. Further, since the support arm 60 is connected to the stator substrate 30, after the second cover plate 42 is connected to the support arm 60, a third accommodating space 53 is formed between the second cover plate 42 and the support arm 60, communicating with the second accommodating space 52. At this time, the heat in the second accommodating space 52 can enter the third accommodating space 53, and then be dissipated through the support arm 60 and the portion of the second cover plate 42 connected to the support arm 60.
[0046] In other words, the first cover plate 41, the stator base plate 30, the support arm 60 and the second cover plate 42 together complete the sealing of the stator 10 and the outer rotor 20, and form an additional third accommodating space 53, so as to dissipate the heat generated by the stator 10 in a larger space.
[0047] Furthermore, the first cover plate 41, the second cover plate 42, and the support arm 60 can be made of aluminum alloy to increase heat dissipation efficiency.
[0048] Furthermore, in this embodiment, the easily heat-dissipating motor also includes a circuit board 61 for controlling the motor. The circuit board 61 is disposed within the third accommodating space 53 and fixed to either the support arm 60 or the second cover plate 42. In this embodiment, the circuit board 61 is fixed to the support arm 60. Because the expansion forms the third accommodating space 53, the third accommodating space 53 has sufficient space to accommodate the circuit board 61. This shortens the length of the connection lines between the circuit board 61 and the stator 10, reducing the cost of the connection lines. Furthermore, the heat generated by the circuit board 61 can be quickly transferred to the support arm 60 or the second cover plate 42 and dissipated to the outside, which is beneficial for heat dissipation.
[0049] Please continue to refer to Figures 3 to 10 In this embodiment, multiple passive fan blades 21 are formed on the side of the outer rotor 20 facing the stator 10. While the outer rotor 20 rotates, it drives the passive fan blades 21 to generate airflow toward the second accommodating space 52. The airflow can quickly transfer heat from the air in the first accommodating space 51 into the second accommodating space 52, and then dissipate it to the outside through the first connecting plate 32, the support arm 60, or the second cover plate 42.
[0050] Furthermore, a fan mechanism 70 is provided on the side of the stator substrate 30 away from the outer rotor 20. The fan mechanism 70 includes an air duct isolation cover 71 and an active fan 72. The air duct isolation cover 71 is disposed on the stator substrate 30, and a space for airflow is formed within the air duct isolation cover 71. The active fan 72 is configured to send airflow from the second accommodating space 52 into the first accommodating space 51 through the air duct isolation cover 71.
[0051] In this embodiment, the active fan 72 is directly fixed to the air duct isolation cover 71. In other embodiments, it can also be located at the boundary between the first accommodating space 51 and the second accommodating space 52. In yet another embodiment, the active fan 72 can also be located near the boundary between the first accommodating space 51 and the second accommodating space 52. That is, the active fan 72 can be located in multiple positions, as long as it can drive the airflow to flow along a set path.
[0052] In this embodiment, the arrangement of the passive fan blades 21 and the fan mechanism 70 on the outer rotor 20 facilitates the formation of a circulating airflow within the first accommodating space 51 and the second accommodating space 52, thereby improving heat dissipation.
[0053] Furthermore, a temperature sensor (not shown) can be installed inside the motor, such as on the stator coils of stator 10, and then the active fan controller can control the active fan 72 based on the temperature of stator 10. That is, the opening and closing of the active fan 72 can be unaffected by the motion state between stator 10 and outer rotor 20. In fact, even when the outer rotor 20 is stationary, turning on the active fan 72 can still agitate the air inside the motor, which is more conducive to heat dissipation.
[0054] It should be noted that the active fan controller can be a standalone controller or a controller integrated on the aforementioned circuit board 61.
[0055] In other embodiments, the motion state of the active fan 72 can also be directly associated with the motion of the outer rotor 20. For example, the active fan 72 can be set to start when the outer rotor 20 starts and stop when the outer rotor 20 stops. Or it can start when the outer rotor 20 starts and stop after a set delay time after the outer rotor 20 stops.
[0056] More specifically, in this embodiment, the outer rotor 20 includes a connecting disk 22, a magnetic coil 23, and a magnet 24. The magnetic coil 23 is arranged around the stator 10, and the magnet 24 is fixed to the inner sidewall of the magnetic coil 23. The connecting disk 22 connects the magnetic coil 23 and the rotating shaft 43. From the side closer to the rotating shaft 43 to the side farther away from the rotating shaft 43, the connecting disk 22 gradually tilts away from the stator 10 to form an inclined surface. The passive fan blade 21 is arranged on this inclined surface along the circumference of the rotating shaft 43. This arrangement facilitates the delivery of the airflow generated by the passive fan blade 21 in a direction away from the rotating shaft 43, and allows it to pass through the gaps in the stator coils and the cutouts 31 of the stator substrate 30 into the second accommodating space 52.
[0057] Furthermore, the air duct isolation cover 71 is also arranged around the rotating shaft 43. On the inner side (i.e., the side closer to the rotating shaft 43) and the outer side (i.e., the side farther from the rotating shaft 43) of the air duct isolation cover 71, corresponding perforations 31 are provided on the stator substrate 30. This structure allows the airflow of the active fan 72 to enter the first accommodating space 51 through the perforations 31 corresponding to the inner side of the air duct isolation cover 71, and then return to the second accommodating space 52 through the perforations 31 corresponding to the outer side of the air duct isolation cover 71. That is, through the arrangement of the passive fan blades 21 and the active fan 72, a cyclical and orderly airflow path can be formed inside the motor.
[0058] In this embodiment, the first cover plate 41, the stator substrate 30, and the second cover plate 42 can be sealed to each other by providing stepped surfaces and / or sealing rings. The first cover plate 41 and the rotating shaft 43 can be sealed by a sealing ring 25. The sealing structures between the various components can be found in existing technology and will not be described in detail here.
[0059] Please continue to refer to Figures 3 to 10 The heat-dissipating motor also includes a pressure regulating mechanism 80, which comprises a fixed cylinder 81 and a piston 82. The fixed cylinder 81 is disposed within the third accommodating space 53, and one end of the fixed cylinder 81 communicates with the outside of the motor through a first communicating hole 62 on the support arm 60. The piston 82 is slidably disposed within the fixed cylinder 81 along its axis, and the fixed cylinder 81 also has a second communicating hole 811 communicating with the third accommodating space 53. The first communicating hole 62 and the second communicating hole 811 are respectively located on both sides of the piston 82.
[0060] Understandably, during assembly, a mounting hole can be first made in the support arm 60, and the fixing cylinder 81 can be placed into the third accommodating space 53 through the mounting hole, and then a cover plate can be placed over the mounting hole. The aforementioned first connecting hole 62 can be made on the aforementioned cover plate.
[0061] In other embodiments, the fixed cylinder 81 of the air pressure regulating mechanism 80 may not be located in the third accommodating space 53, but may be located in the first accommodating space 51 or the second accommodating space 52. This is as long as the fixed cylinder 81 is connected to the outside of the motor through a first connecting hole 62 located at any position, and connected to the inside of the motor through a second connecting hole 811.
[0062] The applicant discovered that in existing technology, electric motorcycles often travel on complex road conditions, frequently encountering flooded or muddy roads, or environments with significant temperature fluctuations. Furthermore, the motor's internal temperature is high during operation, resulting in high internal air pressure; conversely, after stopping operation, or when in flooded or cold conditions, the temperature drops, leading to lower internal air pressure. Even with seals such as gaskets at the joints of various components, the rapid decrease in internal air pressure can still draw in external debris, potentially damaging the motor.
[0063] With the air pressure regulating mechanism 80, when the air pressure inside the motor is high, the gas inside the motor enters the fixed cylinder 81 through the second connecting hole 811, which in turn pushes the piston 82 away from the second connecting hole 811. This increases the volume of the third accommodating space 53, thereby reducing the air pressure inside the motor. Conversely, when the air pressure inside the motor is low, external gas pushes the piston 82 from the end facing the first connecting hole 62, causing the piston 82 to move towards the second connecting hole 811, thus reducing the volume of the third accommodating space 53. As the volume of the third accommodating space 53 decreases, the air pressure in the third accommodating space 53 increases. This effectively prevents the sealing structure from failing due to low air pressure inside the motor, thus preventing the intake of external debris and improving the service life of the motor.
[0064] Furthermore, in this embodiment, the second connecting hole 811 can be provided on the side wall of the fixed cylinder 81 at the end away from the first connecting hole 62, and located outside the stroke of the piston 82. When the piston 82 moves to the end where the second connecting hole 811 is located, the piston 82 can still isolate the connection between the first connecting hole 62 and the second connecting hole 811 to ensure the sealing inside the motor.
[0065] A filter screen 621 can also be provided on the first connecting hole 62 to prevent dust from entering the fixed cylinder 81.
[0066] In summary, in this invention, since the stator 10 is directly fixed to the stator substrate 30, the heat generated on the stator 10 can be transferred to the stator substrate 30 relatively evenly and quickly, and then dissipated through the second accommodating space 52 and the second cover plate 42. That is, this easily heat-dissipating motor can evenly and quickly draw out the heat inside the motor.
[0067] Furthermore, by utilizing the space within the support arm 60 to connect the third accommodating space 53 with the second accommodating space 52, the effective space inside the motor is expanded, thereby improving heat dissipation efficiency.
[0068] Furthermore, the third accommodating space 53 provides space for the layout of the circuit board 61, which shortens the length of the connection lines and reduces costs while ensuring heat dissipation.
[0069] Furthermore, the arrangement of the passive fan blades 21 and the active fan 72 creates a space for airflow within the motor, which is beneficial for heat dissipation.
[0070] Furthermore, the air pressure regulating mechanism 80 can prevent the motor from failing due to a rapid drop in air pressure, prevent the intake of external debris, and improve the service life of the motor.
[0071] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of this utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.
Claims
1. A motor that facilitates heat dissipation, characterized in that: The system includes a stator, an outer rotor, a stator base plate, a first cover plate, a second cover plate, and a rotating shaft. The rotating shaft is rotatably disposed within the stator. The stator is fixed to the stator base plate. The outer rotor covers the stator from the side away from the stator base plate and is fixedly connected to the rotating shaft. The first cover plate covers the stator and the outer rotor from the side away from the stator and is connected to the stator base plate. The second cover plate is connected to the stator base plate from the side away from the stator. A first accommodating space is formed between the cover plate and the stator substrate, and a second accommodating space is formed between the second cover plate and the stator substrate. A stator support plate is formed on the side of the stator substrate facing the outer rotor. The stator support plate is arranged around the rotating shaft. The inner surface of the stator is supported on the stator support plate. A heat-conducting pipe is arranged on the inner sidewall of the stator support plate. The heat-conducting pipe extends along the axial direction of the rotating shaft and extends from the side of the stator close to the outer rotor to the side of the stator away from the outer rotor.
2. The heat-dissipating motor according to claim 1, characterized in that: Multiple cutouts are provided on the stator substrate, and the first accommodating space and the second accommodating space are connected through the cutouts.
3. The heat-dissipating motor according to claim 1, characterized in that: On the side of the stator substrate away from the outer rotor, a first connecting plate is formed protruding away from the stator substrate, and a plurality of heat dissipation fins are spaced apart on the first connecting plate.
4. The heat-dissipating motor according to claim 1, characterized in that: On the side of the stator base plate away from the outer rotor, a first connecting plate is formed protruding in a direction away from the stator base plate. The heat-dissipating motor also includes a support arm for connecting to the vehicle body. The support arm is connected to the stator base plate. The second cover plate is connected to the first connecting plate and the support arm. A second accommodating space is formed between the second cover plate and the first connecting plate. A third accommodating space is formed between the support arm and the second cover plate. The third accommodating space communicates with the second accommodating space.
5. The heat-dissipating motor according to claim 4, characterized in that: The heat-dissipating motor also includes a circuit board for controlling the heat-dissipating motor. The circuit board is disposed in the third accommodating space and fixed to one of the support arm and the second cover plate.
6. The heat-dissipating motor according to claim 4, characterized in that: The heat-dissipating motor also includes a pressure regulating mechanism, which includes a fixed cylinder and a piston. The fixed cylinder is disposed inside the heat-dissipating motor, and one end of the fixed cylinder is connected to the outside through a first connecting hole. The piston is slidably disposed inside the fixed cylinder along the axis of the fixed cylinder. The fixed cylinder is also provided with a second connecting hole that communicates with the interior of the heat-dissipating motor. The first connecting hole and the second connecting hole are respectively disposed on both sides of the piston.
7. The heat-dissipating motor according to claim 6, characterized in that: The second connecting hole is located on the side wall of the fixed cylinder at the end away from the first connecting hole.
8. The heat-dissipating motor according to claim 6, characterized in that: A filter screen is provided on the first connecting hole.