A vehicle-mounted permanent magnet synchronous motor

Abstract

The utility model discloses a kind of vehicle permanent magnet synchronous motor, it is related to the technical field of permanent magnet synchronous motor, including motor shell, front end cover, rear end cover and rotor core, the side of the motor shell is provided with front end cover, the side of the front end cover is connected with rolling bearing and penetrates, the both sides of the motor shell are connected with fin piece, the side of the front end cover is provided with exhaust mechanism, the internal heat of motor shell is exhaust treated by the exhaust mechanism, while taking away the internal water cooling liquid heat of motor shell, the side of the motor shell is provided with cooling mechanism, the air of outside is directly sucked into the inside of motor shell by the cooling mechanism. Rear end cover is purified to inhaled air by filter screen, remove impurities such as dust or particulate matter, prevent them from gathering on coil surface and reduce heat exchange efficiency;Subsequently flowing air forced convection flows through coil surface, absorbs the heat of liquid inside coil.

Description

Technical Field

[0001] This utility model relates to the technical field of permanent magnet synchronous motors, specifically to a permanent magnet synchronous motor for vehicles. Background Technology

[0002] The permanent magnet synchronous motor is the core drive component of electric vehicles. It mainly undertakes the task of converting electrical energy into mechanical energy, efficiently converting battery electrical energy into mechanical energy, directly driving the wheels to rotate and enabling the vehicle to move. By precisely controlling the phase and amplitude of the stator current, the motor speed and torque are adjusted to meet dynamic requirements such as acceleration and climbing.

[0003] With the bearing cover obstructing the heat generated by the motor bearing during operation, it is difficult to dissipate the heat. Since the rear end cover of the motor has an exhaust port, dust from the outside air can enter the motor with the airflow, affecting the operation of the internal components and also affecting the heat dissipation of the internal components. Utility Model Content

[0004] The purpose of this invention is to provide a permanent magnet synchronous motor for vehicles to solve the aforementioned defects caused by the prior art.

[0005] A permanent magnet synchronous motor for vehicles includes a motor housing, a front cover, a rear cover, and a rotor core. The front cover is located on one side of the motor housing, and a rolling bearing is connected through one side of the front cover. Finned components are connected to both sides of the motor housing. An exhaust mechanism is located on one side of the front cover to exhaust internal heat from the motor housing and remove heat from the internal water-cooled liquid. A cooling mechanism is located on one side of the motor housing to draw outside air directly into the motor housing, thereby dissipating the heat generated by the operation of the rotor core and stator core inside the motor housing.

[0006] Preferably, the exhaust mechanism includes a front cover, a positioning hole, an arc-shaped groove, an exhaust hole, a filter element, and a ventilation slot. The front cover and the rear cover are both provided with positioning holes on their outer sides. The front cover is symmetrically provided with arc-shaped grooves on its outer side. The arc-shaped grooves are provided with exhaust holes at equal intervals inside. The outer side of the arc-shaped grooves is fitted with a filter element. The ventilation slots are symmetrically provided at the inner end of the motor housing.

[0007] Preferably, the front end cover is engaged with the outer side of the filter element through symmetrically formed arc-shaped grooves.

[0008] Preferably, the cooling mechanism includes an air intake hood, a rear end cover, a coil groove, a rotor core, a guide fan, and a filter screen. The rear end cover is connected to one side of the air intake hood, and a motor housing is attached to one side of the rear end cover. The motor housing has a coil groove spirally distributed inside, and a rotor core is disposed inside the motor housing. A guide fan is disposed inside the air intake hood, and a filter screen is disposed on one side of the guide fan. The filter screen is connected through the inner end of the air intake hood.

[0009] Preferably, the motor housing is connected to the other side of the rear end cover through symmetrically through ventilation slots, and the rear end cover and the air intake cover are welded together as an integral structure.

[0010] Preferably, the front end cover is connected to the other side of the motor housing through rectangularly distributed positioning holes.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] 1. The rear cover purifies the intake air through a filter screen, removing impurities such as dust or particulate matter to prevent them from accumulating on the surface of the coil and reducing heat exchange efficiency. Subsequently, the flowing air is forced to convect across the surface of the coil, absorbing the heat of the liquid inside the coil and accelerating the drop in liquid temperature, thereby significantly shortening the cooling time. The symmetrically arranged arc-shaped ventilation slots enhance the airflow efficiency inside the motor housing.

[0013] 2. After absorbing heat, the air flows through a special exhaust filter element, which can capture dust, fibers and other particles carried during the heat exchange process, preventing them from accumulating in the exhaust port and causing blockage. The front cover uses a slot structure to enable quick positioning and assembly of the filter element. During installation, the forced guidance of the slot and the locking block ensures accurate matching of the filter element and avoids misalignment. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a side view of the rear cover structure in this utility model.

[0016] Figure 3 This is a schematic diagram of the internal structure of the motor housing in this utility model.

[0017] Figure 4 This is a side view of the front cover structure in this utility model.

[0018] Figure 5 This is a schematic diagram of the internal structure of the air intake cover in this utility model.

[0019] in:

[0020] 1. Motor housing; 2. Rolling bearing; 3. Front cover; 4. Air intake hood; 5. Rear cover; 6. Positioning hole; 7. Exhaust mechanism; 8. Cooling mechanism; 9. Fins; 10. Arc-shaped groove; 11. Exhaust port; 12. Filter element; 13. Ventilation slot; 14. Coil slot; 15. Rotor core; 16. Guide fan; 17. Filter screen. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] like Figures 1 to 5 As shown, a permanent magnet synchronous motor for vehicles includes a motor housing 1, a front cover 3, a rear cover 5, and a rotor core 15. The front cover 3 is provided on one side of the motor housing 1, and a rolling bearing 2 is connected through one side of the front cover 3. Finned components 9 are connected to both sides of the motor housing 1. An exhaust mechanism 7 is provided on one side of the front cover 3. The exhaust mechanism 7 exhausts the internal heat of the motor housing 1 and removes the heat from the internal water-cooled liquid of the motor housing 1. A cooling mechanism 8 is provided on one side of the motor housing 1. The cooling mechanism 8 draws outside air directly into the interior of the motor housing 1, thereby dissipating the heat generated by the operation of the rotor core 15 and stator core inside the motor housing 1.

[0023] In this embodiment, the exhaust mechanism 7 includes a front cover 3, a positioning hole 6, an arc-shaped groove 10, an exhaust hole 11, a filter element 12, and a ventilation slot 13. The front cover 3 and the rear cover 5 are both provided with positioning holes 6 on their outer sides. The front cover 3 is symmetrically provided with arc-shaped grooves 10 on its outer side. The arc-shaped grooves 10 are provided with exhaust holes 11 at equal intervals inside. The outer side of the arc-shaped grooves 10 is fitted with a filter element 12. The ventilation slots 13 are symmetrically provided at the inner end of the motor housing 1. The symmetrically provided ventilation slots 13 are used to ventilate the inside of the motor housing 1, thereby cooling the internal circulating water pipe of the motor housing 1.

[0024] In this embodiment, the front cover 3 is engaged with the outer side of the filter element 12 through symmetrically opened arc-shaped grooves 10. The arc-shaped grooves 10 precisely match the inner wall curvature of the filter element 12 to ensure that the filter element 12 is not stress-deformed when inserted.

[0025] In this embodiment, the cooling mechanism 8 includes an air intake hood 4, a rear end cover 5, a coil groove 14, a rotor core 15, a guide fan 16, and a filter screen 17. The rear end cover 5 is connected to one side of the air intake hood 4, and the motor housing 1 is attached to one side of the rear end cover 5. The coil groove 14 is spirally distributed inside the motor housing 1, and the rotor core 15 is disposed inside the motor housing 1. The guide fan 16 is disposed inside the air intake hood 4, and the filter screen 17 is disposed on one side of the guide fan 16. The filter screen 17 is connected through the inner end of the air intake hood 4. The air intake hood 4 filters the intake air before it is injected for cooling, reducing the dust and impurities in the air.

[0026] In this embodiment, the motor housing 1 is connected to the other side of the rear end cover 5 through symmetrically through ventilation slots 13. The rear end cover 5 and the air intake hood 4 are welded into an integral structure. The air intake hood 4 provides sufficient filtration space for the filtered air, avoiding the narrow filtration space from affecting the filtration effect.

[0027] In this embodiment, the front cover 3 is connected to the other side of the motor housing 1 through rectangularly distributed positioning holes 6, and is fitted and locked to the motor housing 1 through the positioning holes 6 opened on the outer side of the front cover 3.

[0028] In practical applications, this type of automotive permanent magnet synchronous motor includes the following tasks:

[0029] Step 1: During use, first install the two sets of exhaust filter elements 12 inside the arc-shaped groove 10. By pressing the filter element 12, the filter element 12 filters and discharges one side of the multiple exhaust holes 11, so that the front cover 3 fits against one side of the motor housing 1. Wrap the pipe around the outside of the coil groove 14. Then, inject liquid into the pipe through the liquid injection end and discharge end of the motor housing 1. Utilize the liquid circulation inside the pipe to circulate and cool the rotor core 15 and stator core inside the motor housing 1.

[0030] Step 2: During use, by turning on the air guide fan 16, the air guide fan 16 generates axial airflow by rotating the fan blades, drawing outside air into the air intake hood 4 in a specific direction. The air is then filtered by the filter element 12 inside the air intake hood 4 and injected into the cavity opened inside the motor housing 1. This allows the flowing air to carry away the heat from the rotor core 15 and the stator core. At the same time, the flowing liquid inside the pipe assists in heat dissipation, thereby shortening the time for the liquid to cool down.

[0031] Step 3: After the internal heat dissipation of the motor housing 1 is completed, the operator filters the intake air through the filter element 12 set on one side, and then discharges the hot air directly through multiple sets of exhaust holes 11, thereby reducing the dust content of the hot air and preventing the dust in the hot air from being deposited on the surface of the fins 9 set on the outside of the motor housing 1. Normally, the fins 9 are used to conduct heat out of the motor housing 1.

[0032] Therefore, the above-disclosed embodiments are merely illustrative in all respects and are not the only ones. All modifications within the scope of this utility model or its equivalents are included in this utility model.

Claims

1. A permanent magnet synchronous motor for vehicles, characterized in that: The motor housing includes a motor housing (1), a front cover (3), a rear cover (5), and a rotor core (15). A front cover (3) is provided on one side of the motor housing (1), and a rolling bearing (2) is connected through one side of the front cover (3). Fins (9) are connected to both sides of the motor housing (1). An exhaust mechanism (7) is provided on one side of the front cover (3). The exhaust mechanism (7) exhausts the internal heat of the motor housing (1) and removes the heat from the internal water-cooled liquid of the motor housing (1). A cooling mechanism (8) is provided on one side of the motor housing (1). The cooling mechanism (8) draws outside air directly into the interior of the motor housing (1) to dissipate the heat generated by the operation of the rotor core (15) and stator core inside the motor housing (1).

2. The permanent magnet synchronous motor for vehicles according to claim 1, characterized in that: The exhaust mechanism (7) includes a front cover (3), a positioning hole (6), an arc-shaped groove (10), an exhaust hole (11), a filter element (12), and a ventilation slot (13). The front cover (3) and the rear cover (5) are both provided with positioning holes (6). The front cover (3) is symmetrically provided with arc-shaped grooves (10) on the outside. The arc-shaped grooves (10) are provided with exhaust holes (11) at equal intervals inside. The arc-shaped grooves (10) are fitted and connected to the outside of the arc-shaped grooves (10). The ventilation slots (13) are symmetrically provided at the inner end of the motor housing (1).

3. A permanent magnet synchronous motor for vehicles according to claim 2, characterized in that: The front cover (3) is engaged with the outer side of the filter element (12) through symmetrically opened arc-shaped grooves (10).

4. A permanent magnet synchronous motor for vehicles according to claim 1, characterized in that: The cooling mechanism (8) includes an air intake hood (4), a rear end cover (5), a coil groove (14), a rotor core (15), a flow guide fan (16), and a filter screen (17). The rear end cover (5) is connected to one side of the air intake hood (4). The motor housing (1) is attached to one side of the rear end cover (5). The coil groove (14) is spirally distributed inside the motor housing (1). The rotor core (15) is installed inside the motor housing (1). The flow guide fan (16) is installed inside the air intake hood (4). The filter screen (17) is installed on one side of the flow guide fan (16). The filter screen (17) is connected through the inner end of the air intake hood (4).

5. A permanent magnet synchronous motor for vehicles according to claim 4, characterized in that: The motor housing (1) is connected to the other side of the rear end cover (5) through a symmetrically through ventilation slot (13), and the rear end cover (5) and the air intake cover (4) are welded together as an integral structure.

6. A permanent magnet synchronous motor for vehicles according to claim 2, characterized in that: The front cover (3) is connected to the other side of the motor housing (1) through rectangularly distributed positioning holes (6).

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