Motor

Abstract

The motor is used for driving a vehicle and comprises a shell, the shell is provided with a containing cavity, the motor further comprises a stator and a rotor which are arranged in the containing cavity, the stator and the rotor are sequentially arranged in the width direction of the vehicle, the shell extends towards the lower portion of the vehicle to form a windward part, and the windward part is provided with at least one drainage opening. The motor further comprises an air door rotationally arranged at the drainage opening, and the air door has a sealing state for sealing the drainage opening and a drainage state for exposing at least part of the drainage opening. The utility model provides a motor to solve the technical problems that an existing motor is poor in heat dissipation effect, and the dynamic balance of a rotor is affected due to the fact that the rotor is provided with an air duct.

Description

Technical Field

[0001] This application belongs to the field of vehicle drive technology, specifically relating to an electric motor. Background Technology

[0002] New energy vehicles are driven by electric motors. The motor includes a housing with a cavity, a stator, and a rotor housed within the cavity. The rotor has magnets, and the stator has coils. When the stator coils are energized, they drive the rotor to rotate. The rotor is connected to an output shaft, which is then connected to the vehicle's wheels, thus enabling the vehicle to move. However, when a vehicle operates at high speeds for extended periods, the motor can overheat. In this case, the vehicle will enter a power-limiting mode, affecting its usability.

[0003] One existing technical solution utilizes an air-cooling structure to dissipate heat from the stator and rotor. This structure includes stator air ducts running through both ends of the stator and rotor air ducts running through both ends of the rotor, as well as air inlets and outlets at both ends of the motor. Heat dissipation is achieved by connecting the stator and rotor air ducts to the air inlets and outlets, respectively. While the rotor air ducts optimize heat dissipation, they also alter the rotor's mass distribution, making dynamic balancing more difficult. Furthermore, during long-term operation, the presence of the rotor air ducts makes it easier for rotor wear to disrupt the rotor's dynamic balance, causing motor vibration and affecting its performance and stability. Utility Model Content

[0004] This application provides an electric motor to solve the technical problems of poor heat dissipation in existing electric motors and the impact of air ducts on the dynamic balance of the rotor.

[0005] The technical solution adopted in this application is as follows:

[0006] An electric motor for driving a vehicle includes a housing with a receiving cavity. The motor also includes a stator and a rotor disposed in the receiving cavity, the stator and rotor being arranged sequentially along the width direction of the vehicle. The housing extends downward toward the vehicle to form a windward component, the windward component having at least one air inlet for introducing airflow into the receiving cavity. The motor also includes a damper rotatably disposed in the air inlet, the damper having a sealed state that closes the air inlet and a flow-in state that exposes at least a portion of the air inlet.

[0007] The motor in this application also includes the following additional technical features:

[0008] The damper includes a shielding member that can block the air intake and a rotating member connected to the shielding member. Rotating members are provided on both sides of the shielding member along the width direction of the vehicle. The air intake extends to both sides along the width direction of the vehicle to form a mounting wall for mounting the rotating members. The rotating members are rotatably mounted on the mounting wall.

[0009] The motor also includes a drive component that drives the rotating parts to rotate, and the inner wall of the receiving cavity is provided with a mounting groove for fixing the drive component.

[0010] There are two drive components along the width direction of the vehicle. The shielding component has two oppositely arranged connecting walls. One end of the rotating component is connected to the middle position of the connecting wall, and the other end is connected to the output shaft of the drive component.

[0011] The motor also includes a protective component covering the air intake, the protective component having a protective cavity for protecting the air intake, the protective component having an air intake pipe communicating with the protective cavity, the air intake pipe having an air intake facing the front of the vehicle, and a filter being installed inside the air intake pipe.

[0012] The protective component is also equipped with an air outlet duct that communicates with the protective cavity. The air outlet duct has an air outlet facing the rear of the vehicle, and the air intake duct and the air outlet duct are spaced apart along the width of the vehicle.

[0013] The air outlet duct includes an extension section extending toward the side away from the motor and an air outlet section connected to the extension section and extending toward the rear and underside of the vehicle. The air outlet is located in the air outlet section. The protective component also includes a deflector plate located in the protective cavity, which guides the airflow through the air outlet duct into the receiving cavity.

[0014] The air duct includes a guide section extending toward the side away from the motor and an air duct connected to the guide section and facing the front of the vehicle. The end of the air duct is provided with an air duct outlet. The air duct is provided with an air duct fan. A filter element is provided between the air duct fan and the air duct outlet. The filter element is detachably installed in the air duct.

[0015] The air duct has a storage tank below the filter element, and the bottom of the storage tank has multiple cleaning holes, which are spaced apart at the bottom of the storage tank.

[0016] The air intake section extends towards the front and bottom of the vehicle, while the storage tank extends towards the air intake. The depth of the storage tank near the filter element is less than the depth of the storage tank near the air intake.

[0017] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0018] 1. This application incorporates a windward component formed by extending the outer casing downwards towards the vehicle. The windward component has at least one air intake. The motor includes a damper rotatably positioned at the air intake. When the motor requires cooling, the damper is switched from a sealed state to a flow-in state, allowing external airflow to enter the receiving cavity through the air intake and dissipate heat from the stator and rotor. Simultaneously, the air intake is located radially outwards from the stator and rotor, minimizing the impact of the airflow entering through it on rotor operation. The cooling airflow can directly contact the stator and rotor, and is more easily driven by the rotor's rotation, ensuring sufficient contact with heat-generating components and high-temperature airflow during rotor rotation, thus improving the heat exchange rate. In one embodiment, as the vehicle moves forward, the airflow impacts the windward component. By switching the damper to the flow-in state, the high-speed airflow generated by the vehicle's movement is introduced into the receiving cavity, rapidly dissipating heat from the stator and rotor and preventing the high temperature of the motor from affecting vehicle operation.

[0019] 2. In a preferred embodiment of this application, rotating members are provided on both sides of the shield along the width direction of the vehicle. An air intake extending to both sides forms a mounting wall for the rotating members, making the installation of the rotating members more stable. During rotation, the shield can maintain balance, avoiding swaying or tilting, thus ensuring the reliability and stability of the damper's operation. Simultaneously, the rotating members on both sides share the force on the shield, enabling the shield to stably withstand the impact of airflow.

[0020] Furthermore, the mounting slot provides a precise installation position for the drive component, ensuring that it can be accurately installed in the predetermined position. This guarantees that the drive component can effectively drive the rotating component, making the damper's operation accurate and reliable. Installing the drive component in the mounting slot on the inner wall of the receiving cavity fully utilizes the internal space of the cavity, making the motor structure more compact. Moreover, by fixing the drive component in the mounting slot, the drive component remains stable during operation and vehicle movement, preventing loosening and improving the stability and reliability of the motor.

[0021] Furthermore, one end of the rotating component is connected to the middle position of the connecting wall, so that when the rotating component drives the blocking component to rotate, the force transmission is more uniform and symmetrical, effectively reducing the shaking and deflection of the blocking component during rotation, ensuring the stability of the blocking component during rotation, thereby improving the accuracy of the blocking or opening action of the drainage port and ensuring the stability of airflow control.

[0022] 3. As a preferred embodiment of this application, by setting a protective component, the protective component can prevent dust or water from splashing into the inlet during vehicle operation. By setting an air duct and a filter inside the air duct, on the one hand, the air duct can introduce the airflow during vehicle operation into the protective cavity, and then realize heat exchange between the inside of the motor and the outside through the inlet, thereby improving the heat dissipation capacity of the motor. On the other hand, the filter filters the airflow entering the protective cavity, thereby improving the purity of the airflow.

[0023] Furthermore, the protective component is equipped with an air outlet duct that connects to the protective cavity. By designing the air outlet duct to face the rear of the vehicle, when the damper is opened, part of the airflow within the cavity rises and is discharged through the air outlet, while the other part, drawn in by the air inlet duct, forces the high-temperature airflow out of the cavity and then discharges through the air outlet. When the vehicle is traveling at high speed, the air pressure in front of the vehicle is higher than the air pressure behind it. The air outlet's orientation towards the rear of the vehicle utilizes the low-pressure area behind the vehicle to ensure smooth discharge of the high-temperature airflow from the cavity. Simultaneously, it ensures that the direction of the discharged airflow is largely consistent with the prevailing airflow direction around the vehicle, preventing the airflow from impacting the airflow discharged through the air outlet during vehicle movement. The air outlet duct and the intake duct are spaced apart along the width of the vehicle, allowing the introduced cooling airflow to flow fully within the protective cavity, uniformly mixing with the high-temperature airflow within the cavity and exchanging heat, thus improving heat dissipation efficiency.

[0024] 4. In a preferred embodiment of this application, by providing an extension section, the high-temperature airflow from the receiving cavity can be quickly discharged. By extending the air outlet section towards the rear and under the vehicle, condensate generated when the high-temperature airflow impacts the air outlet section is effectively prevented from falling into the protective cavity. When the high-temperature airflow impacts the air outlet section, the condensate adheres to it and is discharged through the air outlet section by gravity. The guide plate inside the protective component guides the cooling airflow through the air duct into the receiving cavity, making the cooling airflow more evenly distributed within the cavity, avoiding turbulence and short-circuiting of the cooling airflow, ensuring sufficient contact between the cooling airflow and the high-temperature components, increasing the heat exchange area and efficiency, and effectively reducing the temperature of the receiving cavity.

[0025] 5. In a preferred embodiment of this application, by setting a guide section extending away from the motor, airflow can be guided into the exhaust duct in a specific direction, allowing the airflow to enter the motor's housing more smoothly and improving the efficiency and stability of airflow introduction. The exhaust section is positioned facing forward of the vehicle, utilizing the positive pressure zone in front of the vehicle during travel to facilitate the guidance of external air into the exhaust duct. When the vehicle moves forward, the exhaust port at the end of the exhaust section can more effectively collect external air, providing sufficient cooling airflow to the housing. By installing an exhaust fan in the exhaust section, the exhaust fan actively draws external air into the exhaust duct, overcoming the resistance of airflow within the duct, increasing airflow rate and velocity, ensuring sufficient cooling airflow enters the protective cavity, improving ventilation and cooling effects, and effectively reducing the temperature inside the protective cavity. A filter element is installed between the exhaust fan and the exhaust port, filtering the airflow before it enters the exhaust fan, ensuring the purity of the airflow entering the protective cavity, which is beneficial to improving the reliability and service life of the motor and the exhaust fan. The filter element is detachable and installed in the exhaust section, facilitating regular inspection, cleaning, or replacement of the filter element.

[0026] 6. As a preferred embodiment of this application, multiple cleaning holes spaced apart at the bottom of the storage tank allow impurities and liquids accumulated in the storage tank to be discharged through the ventilation pipe under gravity. This prevents excessive accumulation of debris in the storage tank from clogging the ventilation pipe and ensures the normal operation of the ventilation system. Simultaneously, the spaced cleaning holes evenly distribute the discharge path of impurities, avoiding impact on the overall impurity removal effect due to localized blockages.

[0027] Furthermore, the storage tank extends towards the air inlet, with the depth of the storage tank near the filter element being less than the depth of the end near the air inlet. During airflow, impurities and liquids move towards the air inlet under the influence of the airflow. The increased depth of the storage tank provides a larger capacity, making it easier for impurities to accumulate within it, reducing the possibility of impurities flowing back or being carried away again by the airflow, and improving the efficiency of impurity collection. Moreover, the shallower depth of the storage tank near the filter element, combined with the sloping bottom of the tank, further facilitates the discharge of impurities. Attached Figure Description

[0028] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0029] Figure 1 This is a schematic diagram of the motor installation according to one embodiment of this application;

[0030] Figure 2 This is a schematic diagram of the structure of the downdraft door according to one embodiment of this application;

[0031] Figure 3 This is a schematic diagram of the installation of the air intake pipe and the air outlet pipe according to one embodiment of this application;

[0032] Figure 4 This is a schematic diagram of the protective component, the air intake pipe, and the air outlet pipe according to one embodiment of this application;

[0033] Figure 5 This is a schematic diagram of the installation of the drainage plate according to one embodiment of this application;

[0034] Figure 6 This is a schematic diagram of the exhaust pipe structure according to one embodiment of this application;

[0035] Figure 7 for Figure 6 Cross-sectional view along the AA direction;

[0036] Figure 8 This is a schematic diagram of the air outlet duct according to one embodiment of this application.

[0037] Figure label:

[0038] 1. Motor; 2. Housing; 21. Receiving cavity; 3. Air intake; 31. Air outlet; 311. Mounting wall; 4. Air damper; 41. Shielding component; 411. Connecting wall; 42. Rotating component; 5. Driving component; 6. Protective component; 61. Protective cavity; 62. Air duct; 621. Guide section; 622. Air intake section; 6212. Storage tank; 6213. Cleaning hole; 623. Air outlet; 624. Filter; 63. Air outlet duct; 631. Extension section; 632. Air outlet section; 633. Air outlet; 64. Air intake plate; 7. Exhaust fan; 8. Drive axle. Detailed Implementation

[0039] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0040] Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below. It should be noted that, unless otherwise specified, the embodiments of this application and the features thereof can be combined with each other.

[0041] Furthermore, it should be understood in the description of this application that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0042] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0043] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0044] like Figure 1 As shown, an electric motor 1 is used to drive a vehicle (not shown in the figure). The electric motor 1 includes a housing 2, which has a receiving cavity 21. The electric motor 1 also includes a stator (not shown in the figure) and a rotor (not shown in the figure) disposed in the receiving cavity 21. The stator and the rotor are arranged sequentially along the width direction of the vehicle. The housing 2 extends downward toward the vehicle to form a windward component 3. The windward component 3 has at least one air inlet 31 for introducing airflow into the receiving cavity 21. The electric motor 1 also includes a damper 4 rotatably disposed in the air inlet 31. The damper 4 has a sealed state that closes the air inlet 31 and a flow-in state that exposes at least part of the air inlet 31.

[0045] This application establishes a windward component 3 by extending the outer casing 2 downwards towards the vehicle. The windward component 3 has at least one air inlet 31. The motor 1 includes a damper 4 rotatably disposed at the air inlet 31. When the motor 1 needs heat dissipation, the damper 4 is switched from a sealed state to a flow-in state, allowing external airflow to enter the receiving cavity 21 through the air inlet 31, thus dissipating heat from the stator and rotor. Simultaneously, the air inlet 31 is located radially outwards from the stator and rotor, minimizing the impact of the airflow entering through it on rotor operation. The cooling airflow can directly contact the stator and rotor, and is more easily driven by the rotor's rotation, ensuring sufficient contact with heat-generating components and high-temperature airflow during rotor rotation, thereby increasing the heat exchange rate. In one embodiment, as the vehicle moves forward, the airflow impacts the windward component 3. By switching the damper 4 to the flow-in state, the high-speed airflow generated by the vehicle's movement is introduced into the receiving cavity 21, rapidly dissipating heat from the stator and rotor and preventing the high temperature of the motor 1 from affecting vehicle operation.

[0046] exist Figure 1 In this application, the motor 1 is mounted on the drive axle 8 of the vehicle, and the length direction of the drive axle 8 is the width direction of the vehicle. The housing 2 extends downwards towards the vehicle. Specifically, existing vehicles include a chassis and wheels, with the wheels creating a space between the chassis and the ground. The housing 2 extends downwards towards the space between the chassis and the ground, maintaining a distance from the ground. Simultaneously, since the rotor and stator are arranged along the width direction of the vehicle, an air intake 31 is provided on the windward component 3 extending downwards towards the vehicle. The air intake 31 is located radially outwards from the stator and rotor. The damper 4 can be switched in the following ways: it can be opened when the vehicle's operating environment, such as air humidity, meets the opening conditions, allowing the vehicle to move forward; or, by setting the motor 1 temperature to a certain range, the damper 4 can be opened after the vehicle stops or decelerates, achieving rapid heat dissipation for the motor 1.

[0047] As a preferred embodiment of this application, such as Figure 1 , Figure 2As shown, the damper 4 includes a shielding member 41 that can block the air intake 31 and a rotating member 42 connected to the shielding member 41. Rotating members 42 are arranged on both sides of the shielding member 41 along the width direction of the vehicle. The air intake 31 extends to both sides along the width direction of the vehicle to form a mounting wall 311 for mounting the rotating member 42. The rotating member 42 is rotatably mounted on the mounting wall 311. The arrangement of rotating members 42 on both sides of the shielding member 41 along the width direction of the vehicle, and the formation of mounting walls 311 for mounting the rotating member 42 by extending the air intake 31 to both sides, makes the installation of the rotating member 42 more stable. During rotation, the shielding member 41 can maintain balance, avoiding swaying or tilting, thus ensuring the reliability and stability of the damper 4. At the same time, the rotating members 42 on both sides share the force of the shielding member 41, enabling the shielding member 41 to stably withstand the impact of airflow.

[0048] As a preferred embodiment of the implementation method, such as Figure 1 , Figure 2 As shown, the motor 1 also includes a drive component 5 that drives the rotating component 42 to rotate. The inner wall of the receiving cavity 21 is provided with a mounting groove (not shown in the attached figure) for fixing the drive component 5. The mounting groove provides a precise installation position for the drive component 5, ensuring that the drive component 5 can be accurately installed in the predetermined position, thereby ensuring that the drive component 5 can effectively drive the rotating component 42 to rotate, making the operation of the damper 4 accurate and reliable. Installing the drive component 5 in the mounting groove on the inner wall of the receiving cavity 21 can fully utilize the internal space of the receiving cavity 21, making the structure of the motor 1 more compact. Moreover, by fixing the drive component 5 with the mounting groove, the drive component 5 can remain stable during operation and vehicle movement, preventing loosening and improving the stability and reliability of the motor 1. Those skilled in the art will understand that the method of fixing the drive component 5 is not limited in this application; it can be achieved by engaging the drive component 5 with the mounting groove, or by welding, bolting, etc.

[0049] In Embodiment 1, the number of driving components 5 can be any of the following specific examples.

[0050] Specific example 1: if Figure 1 , Figure 2As shown, there are two drive components 5. Along the width direction of the vehicle, the shield 41 has two oppositely arranged connecting walls 411. One end of the rotating component 42 is connected to the middle position of the connecting wall 411, and the other end is connected to the output shaft of the drive component 5. Preferably, the mounting wall 311 is provided with a clearance hole (not shown in the figure) to avoid the rotating component 42. One end of the rotating component 42 is connected to the middle position of the connecting wall 411, so that when the rotating component 42 drives the shield 41 to rotate, the force transmission is more uniform and symmetrical, effectively reducing the shaking and deflection of the shield 41 during rotation, ensuring the stability of the shield 41 during rotation, thereby improving the accuracy of the shielding or opening action of the inlet 31 and ensuring the stability of airflow control.

[0051] Specific Example 2: This specific example 2 is not illustrated. There is a drive component, and along the width direction of the vehicle, the shielding component has two connecting walls arranged opposite to each other. One of the two rotating components is connected at one end to the middle position of the connecting wall and at the other end to the output shaft of the drive component. The other rotating component is connected at one end to the middle position of the connecting wall and at the other end to the mounting wall.

[0052] As a preferred embodiment 3 in implementation 1 (not shown in the figure), the motor also includes a sensor for detecting the relative humidity of the outside air. The sensor has a conducting state and an open-circuit state. When the relative humidity meets the standard value, the sensor enters the conducting state, and the drive unit can drive the damper to rotate. When the air humidity does not meet the standard value, the sensor enters the open-circuit state, and the damper remains sealed. The sensor realizes the auxiliary control of the damper. Preferably, the standard value is 30%-50%.

[0053] In this application, the protective device for the drainage port 31 can be any of the following embodiments:

[0054] Implementation Method Two: (e.g.) Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7As shown, the motor 1 also includes a protective member 6 covering the air intake 31. The protective member 6 has a protective cavity 61 protecting the air intake 31. The protective member 6 has an air intake pipe 62 communicating with the protective cavity 61. The air intake pipe 62 has an air intake 623 facing the front of the vehicle. A filter 624 is installed inside the air intake pipe 62. By setting the protective member 6, the protective member 6 can prevent dust or water from splashing into the air intake 31 during vehicle operation. By setting the air intake pipe 62 and the filter 624 inside the air intake pipe 62, on the one hand, the air intake pipe 62 can introduce the airflow during the vehicle's forward movement into the protective cavity 61, thereby realizing heat exchange between the inside of the motor 1 and the outside through the air intake 31, improving the heat dissipation capacity of the motor 1. On the other hand, the filter 624 filters the airflow entering the protective cavity 61, improving the purity of the airflow. The connection method between the protective member 6 and the outer shell 2 is not limited in this application. It can be welding or by setting a threaded countersunk hole in the outer shell, and the protective member 6 and the outer shell 2 are connected by bolts, etc.

[0055] Implementation Method 3: This implementation method is not illustrated. The windward component is provided with two air inlets. The motor also includes a protective component. The protective component covers the two air inlets. The protective component is provided with a protective cavity to protect the two air inlets. The protective component is provided with an air duct that communicates with the protective cavity. The air duct is provided with an air inlet facing the front of the vehicle. A filter is provided inside the air duct.

[0056] Implementation Method 4: This implementation method 4 is not illustrated. The difference from implementation method 3 is that the motor also includes two protective components. The two protective components are respectively covered with two air inlets. One of the two protective components is provided with an air inlet pipe, and the other is provided with an air outlet pipe.

[0057] In this application, the filter element 624 is configured to filter both impurities and moisture in the air. The filter element 624 may be made of fiber filter material or be a microporous filter membrane, etc. This application does not impose any restrictions.

[0058] In the second embodiment, the air outlet configuration of motor 1 can be any one of the following embodiments:

[0059] Example 2: As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 8As shown, the protective component 6 is also equipped with an air outlet 63 connected to the protective cavity 61. The air outlet 63 has an air outlet 633 facing the rear of the vehicle. The air intake duct 62 and the air outlet 63 are spaced apart along the width direction of the vehicle. The protective component 6 is equipped with an air outlet 63, which is connected to the protective cavity 61. By setting the air outlet 63 to have an air outlet 633 facing the rear of the vehicle, after the damper 4 is opened, part of the airflow in the receiving cavity 21 rises and is discharged through the air outlet 633, and another part of the airflow entering through the air intake duct squeezes the high-temperature airflow out of the receiving cavity 21 and is then discharged through the air outlet 633. When the vehicle is traveling at high speed, the air pressure in front of the vehicle is higher and the air pressure behind the vehicle is lower. The air outlet 633 is set to face the rear of the vehicle, utilizing the low-pressure area behind the vehicle to allow the high-temperature airflow in the receiving cavity 21 to be discharged smoothly. At the same time, it can also make the direction of the discharged airflow basically consistent with the mainstream direction of the surrounding airflow when the vehicle is moving forward, avoiding the impact of the airflow on the airflow discharged from the air outlet 633 during the vehicle's forward movement. The exhaust duct 63 and the intake duct 62 are spaced apart along the width of the vehicle, so that the introduced cooling airflow can flow fully in the protective cavity 61, mix evenly with the high-temperature airflow in the receiving cavity 21 and exchange heat, thereby improving the heat dissipation efficiency.

[0060] Furthermore, such as Figure 3 , Figure 4 , Figure 8As shown, the air outlet duct 63 includes an extension section 631 extending towards the side opposite to the motor 1 and an air outlet section 632 connected to the extension section 631 and extending towards the rear and underside of the vehicle. An air outlet 633 is disposed in the air outlet section 632. The protective component 6 also includes a guide plate 64 disposed within the protective cavity 61, which guides the airflow through the air outlet duct 62 into the receiving cavity 21. Preferably, the guide plate 64 is arranged along the front-rear direction of the vehicle and has a guide hole (not shown in the attached figure) for the avoidance damper 4. By providing the extension section 631, the high-temperature airflow flowing out of the receiving cavity 21 can be quickly discharged. By utilizing the air outlet section 632 extending towards the rear and underside of the vehicle, condensate generated when the high-temperature airflow impacts the air outlet section 632 is effectively prevented from falling into the protective cavity 61. When the high-temperature airflow impacts the air outlet section 632, the condensate adheres to the air outlet section 632, and is discharged through the air outlet section 632 by gravity. The guide plate 64 installed inside the protective component 6 guides the cooling airflow through the air duct 62 into the receiving cavity 21, making the cooling airflow more evenly distributed within the receiving cavity 21. This avoids turbulence and short-circuiting of the cooling airflow, ensuring sufficient contact between the cooling airflow and the high-temperature components, increasing the area and efficiency of heat exchange, and effectively reducing the temperature of the receiving cavity 21. Those skilled in the art will understand that, in this application, by staggering the air outlet duct 63 and the air duct 62 along the longitudinal direction of the vehicle, the guide plate 64 can be positioned along the width direction of the vehicle. Simultaneously, a heating element for the air outlet duct 63 can be installed to prevent condensation from forming in the high-temperature airflow within the air outlet duct 63.

[0061] Example 3: This example 3 is not shown in the figure. The difference from Example 2 is that the air outlet duct extends to the side and under the vehicle. The protective component also includes a deflector plate disposed in the protective cavity. The deflector plate guides the airflow through the air outlet duct into the receiving cavity.

[0062] As a preferred embodiment of implementation method two: such as Figure 3 , Figure 4 , Figure 6 , Figure 7As shown, the air duct 62 includes a guide section 621 extending towards the side opposite to the motor 1 and an air duct 622 connected to the guide section 621 and facing the front of the vehicle. An air duct 623 is located at the end of the air duct 622. An air duct fan 7 is provided in the air duct 622, and a filter 624 is disposed between the air duct fan 7 and the air duct 623. The filter 624 is detachably mounted on the air duct 622. Preferably, the air duct fan 7 is a turbine with fan blades. By setting the guide section 621 to extend towards the side opposite to the motor 1, airflow can be guided into the air duct 62 in a specific direction, allowing the airflow to enter the receiving cavity 21 of the motor 1 more smoothly, improving the efficiency and stability of airflow introduction. The air duct 622 is positioned facing the front of the vehicle, utilizing the positive pressure zone in front of the vehicle during travel to facilitate the guidance of external air into the air duct 62. When the vehicle is moving forward, the air duct 623 at the end of the air duct 622 can more effectively collect external air, providing sufficient cooling airflow to the receiving cavity 21. By installing an induced draft fan 7 in the induced draft section 622, the induced draft fan 7 actively draws in external air into the induced draft duct 62, overcoming the airflow resistance within the duct, increasing airflow rate and velocity, ensuring sufficient cooling airflow enters the protective cavity 61, improving ventilation and cooling effect, and effectively reducing the temperature inside the protective cavity 61. A filter element 624 is installed between the induced draft fan 7 and the air outlet 623, filtering the airflow before it enters the induced draft fan 7, ensuring the purity of the airflow entering the protective cavity 61, which is beneficial to improving the reliability and service life of the motor 1 and the induced draft fan 7. The filter element 624 is detachable from the induced draft section 622, facilitating regular inspection, cleaning, or replacement of the filter element 624.

[0063] Furthermore, such as Figure 3 , Figure 4 , Figure 6 , Figure 7As shown, the air duct 62 has a storage tank 6212 below the filter element 624. The bottom of the storage tank 6212 has multiple cleaning holes 6213, which are spaced apart. Preferably, the air duct 622 extends towards the front and bottom of the vehicle, and the storage tank 6212 extends towards the air inlet 623. The depth of the storage tank 6212 near the filter element 624 is less than the depth of the storage tank 6212 near the air inlet 623. The multiple cleaning holes 6213 spaced apart at the bottom of the storage tank 6212 allow impurities and liquids accumulated in the storage tank 6212 to be discharged from the air duct 62 under gravity, preventing excessive accumulation of debris and clogging of the air duct 62, thus ensuring the normal operation of the air duct system. Simultaneously, the spaced cleaning holes 6213 evenly distribute the discharge path of impurities, avoiding localized blockages that could affect the overall impurity removal effect. Furthermore, the storage tank 6212 extends towards the air inlet 623. The depth of the storage tank 6212 near the filter element 624 is less than the depth of the storage tank 6212 near the air inlet 623. During the air intake process, impurities and liquids move towards the air inlet 623 under the action of airflow. The increased depth of the storage tank 6212 provides a larger holding space, making it easier for impurities to accumulate in the storage tank 6212, reducing the possibility of impurities flowing back or being carried away again by the airflow, and improving the efficiency of impurity collection. Moreover, the shallow depth of the storage tank 6212 near the filter element 624, which is less than the depth of the storage tank 6212 near the air inlet 623, forms an inclined surface at the bottom of the storage tank 6212, which further facilitates the discharge of impurities.

[0064] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0065] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0066] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. An electric motor for driving a vehicle, characterized by comprising: The motor includes a housing with a receiving cavity. The motor also includes a stator and a rotor disposed in the receiving cavity. The stator and the rotor are arranged sequentially along the width direction of the vehicle. The housing extends downward toward the vehicle to form a windward component. The windward component has at least one air inlet for introducing airflow into the receiving cavity. The motor also includes a damper rotatably disposed in the air inlet. The damper has a sealed state that closes the air inlet and a flow-in state that exposes at least a portion of the air inlet.

2. An electric machine according to claim 1, characterized in that The damper includes a shielding member capable of blocking the inlet and a rotating member connected to the shielding member. The rotating members are arranged on both sides of the shielding member along the width direction of the vehicle. The inlet extends to both sides along the width direction of the vehicle to form a mounting wall for mounting the rotating members. The rotating members are rotatably mounted on the mounting wall.

3. An electric machine according to claim 2, characterised in that The motor also includes a driving component that drives the rotating component to rotate, and the inner wall of the receiving cavity is provided with a mounting groove for fixing the driving component.

4. An electric machine as claimed in claim 3, characterised in that The drive unit is provided in two parts. Along the width direction of the vehicle, the shielding member has two oppositely arranged connecting walls. One end of the rotating member is connected to the middle position of the connecting wall, and the other end is connected to the output shaft of the drive unit.

5. An electric machine as recited in claim 1, wherein The motor also includes a protective component covering the inlet, the protective component having a protective cavity for protecting the inlet, the protective component having an air duct communicating with the protective cavity, the air duct having an air inlet facing the front of the vehicle, and a filter component inside the air duct.

6. An electric machine according to claim 5, characterised in that The protective component is also provided with an air outlet pipe communicating with the protective cavity. The air outlet pipe has an air outlet facing the rear of the vehicle. The air intake pipe and the air outlet pipe are spaced apart along the width direction of the vehicle.

7. An electric machine according to claim 6, characterised in that The air outlet duct includes an extension section extending toward the side away from the motor and an air outlet section connected to the extension section and extending toward the rear and underside of the vehicle. The air outlet is disposed in the air outlet section. The protective component also includes a guide plate disposed in the protective cavity. The guide plate guides the airflow through the air outlet duct into the receiving cavity.

8. An electric machine as recited in claim 5, characterized in that The air duct includes a guide section extending toward the side away from the motor and an air duct connected to the guide section and arranged toward the front of the vehicle. The air duct is provided at the end of the air duct and is provided with a fan. The filter is disposed between the fan and the air duct and is detachably disposed in the air duct.

9. An electric machine according to claim 8, characterised in that The air duct is provided with a storage tank below the filter element, and the bottom of the storage tank is provided with multiple cleaning holes, which are spaced apart at the bottom of the storage tank.

10. An electric machine according to claim 9, characterized in that The air intake section extends toward the front and below the vehicle, the storage tank extends toward the air intake, and the depth of the storage tank near the filter element is less than the depth of the storage tank near the air intake.

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