Automobile cooling fan motor assembly

Abstract

The utility model discloses a motor assembly of a car cooling fan, including a controller component, the controller component including a heat dissipation base, a rear end cover, a PCBA board and an armature component, the armature component including a stator core and a stator winding, the stator core is also provided with a connecting protrusion, a phase ring component is installed inside the stator core, the phase ring component includes a phase ring body, a first conductive sheet, a second conductive sheet and a third conductive sheet are embedded and fixed in the phase ring body, the first conductive sheet, the second conductive sheet and the third conductive sheet are also respectively provided with a first conductive rod, a second conductive rod and a third conductive rod, a matching avoidance hole is provided on the phase ring body, the phase ring body is fixed in the center hole of the stator core by a clamping structure, and the first conductive rod, the second conductive rod and the third conductive rod are fixed to the PCBA board. The motor assembly is not only convenient for the installation of the phase ring body, but also the stator winding and the PCBA board can be better connected, and the structure is simpler.

Description

Technical Field

[0001] The utility model relates to the technical field of fan motors, in particular to an automobile cooling fan motor assembly. Background Art

[0002] The motor is a commonly used power device used in various industries, and patent publication number 202111286404.8 discloses an outer rotor motor for driving an automobile cooling fan, including an intermediate phase ring, on which three metal guard hooks are evenly mounted, each of which is provided with two wiring harness hooks and one connecting hook. A conductive bracket and a conductive connecting rod are also required to be provided on the heat dissipation base. The stator winding is wound on the metal guard hook, and then the conductive bracket is installed on the back of the heat dissipation base. One end of the conductive connecting rod passes through the heat dissipation base and is welded to the connecting hook, and the other end is directly welded to the PCBA board. This motor still has some defects: 1. The molding of this phase ring is relatively complicated. Several insertion pins need to be molded on the phase ring, especially the insertion pins need to be provided with inverted teeth. The insertion pins need to be accurately inserted into the holes of the stator core and fit tightly. The assembly resistance is relatively large, so the molding of the overall phase ring is difficult; 2. A metal guard hook needs to be inserted into the intermediate phase ring. When installing the metal guard hook, an embedded pin is provided on the metal guard hook. Therefore, the intermediate phase ring needs to be provided with an embedded hole corresponding to the embedded pin, which greatly increases the precision required for manufacturing the intermediate phase ring; 3. After the wiring harness and the wiring harness hook are clamped and welded, the guide wire is The electric connecting rod also needs to be welded with the connecting hook for conductivity; and in order to ensure the insulation between the conductive connecting rod and the heat dissipation base, an additional conductive bracket is required. The overall parts are relatively large and the assembly process is more complicated; 3. The conductive rod passes through the through hole. Since a sink area is provided on the heat dissipation base, the through hole is provided in the sink area. Even if a sealing sleeve is provided in the through hole, the sealing sleeve is only squeezed in the through hole, and there is no squeezing in the axial direction. In this way, the sealing is difficult to guarantee over time, especially for motors used in automobiles. Especially when the automobile is used, there will be bumps, which will also aggravate the failure of the seal. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an automobile cooling fan motor assembly, which is not only convenient for the installation of the phase ring body, but also enables better connection between the stator winding and the PCBA board, and has a simpler structure.

[0004] In order to solve the above technical problems, the technical solution of the utility model is: an automobile cooling fan motor assembly, including a controller component, the controller component including a shell composed of a heat dissipation base and a rear end cover, a PCBA board is fixedly arranged in the shell, a central axis is arranged on the front of the heat dissipation base, an armature component is installed on the front of the heat dissipation base, an outer rotor assembly is rotatably installed on the central axis, the armature component includes a stator core and a stator winding wound on the stator core, a central hole is arranged at the center of the stator core, the central axis is located in the central hole, a plurality of radially extending connecting protrusions are also arranged on the stator core, a phase ring component is installed inside the stator core, the phase ring component includes a phase ring body made of insulating material, a first Conductive sheet, second conductive sheet and third conductive sheet, a plurality of metal hooks are respectively arranged on the first conductive sheet, the second conductive sheet and the third conductive sheet, the stator winding is wound on the metal hooks according to a set winding method, the first conductive sheet, the second conductive sheet and the third conductive sheet are also respectively provided with a first conductive rod, a second conductive rod and a third conductive rod, the phase ring body is provided with a matching avoidance hole matched with the connecting protrusion on the center hole of the stator core, the connecting protrusion extends into the matching avoidance hole and is fixedly connected to the heat dissipation base by bolts, the outer periphery of the phase ring body is provided with a clamping structure, the phase ring body is clamped and fixed in the center hole of the stator core by the clamping structure, the first conductive rod, the second conductive rod and the third conductive rod pass through the heat dissipation base and are fixed to the PCBA board.

[0005] As a preferred solution, the clamping structure includes a plurality of axially extending clamping protrusions arranged on the outer periphery of the phase ring body, and the ends of the clamping protrusions are provided with guiding inclined surfaces for facilitating insertion into the center hole of the stator core.

[0006] As a preferred solution, a U-shaped matching hole wall is provided on the phase ring body, and the matching hole wall encloses a matching avoidance hole adapted to the shape of the connecting protrusion, and a positioning notch is provided on the matching hole wall. Correspondingly, a positioning protrusion which is inserted into the positioning notch is provided on the connecting protrusion.

[0007] As a preferred solution, the phase ring body is also provided with hollow holes for partially exposing the first conductive sheet, the second conductive sheet and the third conductive sheet, the position of the metal guard hook corresponds to the hollow hole, and the first conductive sheet, the second conductive sheet and the third conductive sheet are provided with spot welding protrusions corresponding to the one-to-one positions of the metal guard hooks.

[0008] As a preferred solution, the phase ring body is further provided with a plurality of reinforcing ribs spanning the hollow holes, the first conductive sheet, the second conductive sheet and the third conductive sheet respectively penetrate the reinforcing ribs, the first conductive sheet, the second conductive sheet and the third conductive sheet are provided with connecting and accommodating holes corresponding to the reinforcing ribs, and the phase ring body is also provided with an avoidance gap connected to the hollow hole on the outer side of the metal guard hook.

[0009] As a preferred solution, three lower sealing columns extending toward the front are provided on the heat dissipation base, three upper sealing columns extending toward the back are provided on the phase ring assembly, upper sealing cavities and lower sealing cavities are provided on the upper sealing columns and lower sealing columns, respectively, the first conductive rod, the second conductive rod and the third conductive rod respectively penetrate the corresponding upper sealing columns and lower sealing columns and are welded and fixed to the PCBA board, the first conductive rod, the second conductive rod and the third conductive rod are all provided with sealing plugs, and each sealing plug is extruded and set in the corresponding upper sealing cavity and lower sealing cavity.

[0010] As a preferred solution, the upper sealing cavity is a conical cavity with a small top and a large bottom, and the lower sealing cavity is a conical cavity with a large top and a small bottom. The sealing plug includes an upper frustum body and a lower frustum body connected to each other, and a step surface is formed between the upper frustum body and the lower frustum body. The upper frustum body is inserted into the upper sealing cavity, and the lower frustum body is inserted into the lower sealing cavity. The sealing plug is provided with a through-hole.

[0011] As a preferred solution, an annular groove is further provided on the upper edge of the lower sealing cavity.

[0012] As a preferred solution, a bottom cavity whose size is larger than the lower sealing hole is provided at the bottom of the lower sealing column, and the lower end of the lower frustum body is located in the bottom cavity.

[0013] As a preferred solution, heat dissipation reinforcing ribs are arranged around the lower sealing column on the heat dissipation base.

[0014] After adopting the above technical scheme, the effect of the utility model is as follows: since a phase ring assembly is installed inside the stator core, the phase ring assembly includes a phase ring body made of insulating material, a first conductive sheet, a second conductive sheet and a third conductive sheet are embedded and fixed in the phase ring body, a plurality of metal hooks are respectively provided on the first conductive sheet, the second conductive sheet and the third conductive sheet, the stator winding is wound on the metal hooks according to a set winding method, the first conductive sheet, the second conductive sheet and the third conductive sheet are also respectively provided with a first conductive rod, a second conductive rod and a third conductive rod, a matching avoidance hole matching with a connecting protrusion on the center hole of the stator core is provided on the phase ring body, the connecting protrusion extends into the matching avoidance hole and is fixedly connected to the heat dissipation base by bolts. The outer periphery of the phase ring body is provided with a clamping structure, and the phase ring body is clamped and fixed in the center hole of the stator core through the clamping structure. The first conductive rod, the second conductive rod and the third conductive rod penetrate the heat dissipation base and are fixed to the PCBA board. Therefore, compared with the existing fan motor, the motor assembly has the following advantages: 1. The phase ring body is clamped in the center hole of the stator core through the outer periphery of the clamping structure. Compared with the previous insertion that requires multiple insertion pins, the installation is simpler and the molding difficulty of the phase ring body is also reduced; 2. The first conductive rod, the second conductive rod and the third conductive rod of the phase ring assembly are directly connected to the first conductive sheet, the second conductive sheet and the third conductive sheet, which is convenient for direct connection with the PCBA board, so that the assembly steps can be omitted and the number of parts is saved.

[0015] Furthermore, since the clamping structure includes a plurality of axially extending clamping protrusions arranged on the outer periphery of the phase ring body, the ends of the clamping protrusions are provided with guiding slopes for convenient insertion into the central hole of the stator core. The guiding slopes can play a guiding role when the phase ring body is inserted, and the insertion resistance is smaller and more convenient.

[0016] Furthermore, since the phase ring body is provided with a U-shaped matching hole wall, the matching hole wall encloses a matching avoidance hole that matches the shape of the connecting protrusion, and the matching hole wall is provided with a positioning notch, correspondingly, the connecting protrusion is provided with a positioning protrusion that snaps into the positioning notch. Therefore, when the phase ring body is snapped into the center hole of the stator core, the snap-in protrusion on the connecting protrusion of the stator core will also snap into the positioning notch, which can further limit the axial position. Of course, the installation angle positioning can be achieved by optimizing the number of positioning notches, wherein at least one matching avoidance hole has no positioning notch on its matching hole wall, so that when installing the phase ring assembly, it must be snapped in at the set angle, which can ensure the accurate position of the first conductive rod, the second conductive rod and the third conductive rod, and avoid misalignment between the stator core and the phase ring.

[0017] Furthermore, since the phase ring body is also provided with hollow holes for partially exposing the first conductive sheet, the second conductive sheet and the third conductive sheet, the position of the metal hook is corresponding to the hollow hole, and the first conductive sheet, the second conductive sheet and the third conductive sheet are provided with spot welding protrusions corresponding to the one-to-one positions of the metal hooks. This can not only reduce the overall weight of the phase ring body and save materials, but also make the spot welding of the metal hook and the wiring harness more reliable, thereby ensuring the quality of welding.

[0018] Since the phase ring body is also provided with a plurality of reinforcing ribs spanning the hollow holes, the first conductive sheet, the second conductive sheet and the third conductive sheet respectively penetrate the reinforcing ribs, the first conductive sheet, the second conductive sheet and the third conductive sheet are provided with connection and accommodation holes corresponding to the reinforcing ribs, and the phase ring body is also provided with an escape notch connected to the hollow holes on the outer side of the metal hook. The use of the reinforcing ribs can improve the strength of the phase ring body, and the escape notch can increase the distance between the metal hook and the plastic of the phase ring body, so as to avoid the excessive temperature of the metal hook and cause the plastic to melt during the upper and lower spot welding.

[0019] Furthermore, since the heat dissipation base is provided with three lower sealing columns extending toward the front, and the phase ring assembly is provided with three upper sealing columns extending toward the back, the upper sealing columns and the lower sealing columns are respectively provided with upper sealing cavities and lower sealing cavities, the first conductive rod, the second conductive rod and the third conductive rod respectively penetrate the corresponding upper sealing columns and the lower sealing columns and are welded and fixed to the PCBA board, and the first conductive rod, the second conductive rod and the third conductive rod are all provided with sealing plugs, and each sealing plug is extruded and set in the corresponding upper sealing cavity and the lower sealing cavity. Therefore, after assembly, the sealing plug is always squeezed in the upper sealing cavity and the lower sealing cavity, and the sealing plug is not only subjected to radial pressure, but also to axial pressure, so that the sealing effect is better and the sealing effect can be guaranteed for a long time.

[0020] Since the upper sealing cavity is a conical cavity with a small top and a large bottom, and the lower sealing cavity is a conical cavity with a large top and a small bottom, the sealing plug includes an upper frustum body and a lower frustum body connected to each other, a step surface is formed between the upper frustum body and the lower frustum body, the upper frustum body is inserted into the upper sealing cavity, and the lower frustum body is inserted into the lower sealing cavity, and a through sleeve hole is provided on the sealing plug. After adopting the above structure, the upper frustum body and the lower frustum body of the sealing plug will be squeezed by the conical cavity, and the overall sealing effect is better.

[0021] Furthermore, since an annular groove is provided at the upper edge of the lower sealing cavity, the annular groove can further accommodate the deformation of the lower frustum.

[0022] Since the bottom of the lower sealing column is provided with a bottom cavity whose size is larger than the lower sealing hole, the lower end of the lower frustum body is in the bottom cavity, so that the entire lower frustum body can be better inserted into the lower sealing hole. After the sealing plug is squeezed by the lower sealing hole, the upper end of the sealing plug can accommodate the deformation by the annular groove, while the lower end can accommodate the deformation by the bottom cavity, thereby further ensuring the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0024] Figure 1 It is a structural stereogram of an embodiment of the utility model;

[0025] Figure 2 This is a three-dimensional view with the outer rotor assembly hidden;

[0026] Figure 3 This is a top view with the outer rotor assembly hidden;

[0027] Figure 4 yes Figure 3 Sectional view at AA;

[0028] Figure 5 yes Figure 4 An enlarged schematic diagram at B;

[0029] Figure 6 This is a schematic diagram of the front structure of the heat dissipation base;

[0030] Figure 7 It is a stereogram of the phase ring assembly;

[0031] Figure 8 It is a stereogram of the phase ring assembly from another angle;

[0032] Fig. 9 is a three-dimensional diagram of a first conductive sheet, a second conductive sheet, and a third conductive sheet;

[0033] Fig.10 is a three-dimensional diagram of the sealing plug;

[0034] Fig.11 is a cross-sectional view of the sealing plug;

[0035] In the attached drawings: 1. heat dissipation base; 101. lower sealing column; 102. bottom cavity; 103. lower sealing cavity; 104. annular groove; 105. heat dissipation reinforcement rib; 2. phase ring assembly; 21. phase ring body; 22. first conductive sheet; 23. second conductive sheet; 24. third conductive sheet; 25. first conductive rod; 26. second conductive rod; 27. third conductive rod; 28. metal hook; 29. ​​upper sealing column; 291. upper sealing cavity; 210. fixed Positioning groove; 211, reinforcing rib plate; 212, matching avoidance hole; 213, positioning notch; 214, avoidance notch; 215, spot welding protrusion; 216, connection accommodating hole; 217, hollow hole; 3, sealing plug; 31, upper frustum body; 32, lower frustum body; 33, conical guide section; 34, sleeve hole; 4, PCBA board; 5, stator core; 51, connecting protrusion; 52, positioning protrusion; 6, stator winding; 7, outer rotor assembly; 8, center axis. DETAILED DESCRIPTION

[0036] The present invention is further described in detail below through specific embodiments.

[0037] like Figures 1 to 11 As shown, an automobile cooling fan motor assembly includes a controller component, the controller component includes a shell composed of a heat dissipation base 1 and a rear end cover, a PCBA board 4 is fixedly arranged in the shell, a central axis 8 is arranged on the front of the heat dissipation base 1, an armature assembly is installed on the front of the heat dissipation base 1, and an outer rotor assembly 7 is rotatably installed on the central axis 8.

[0038] The upper and lower parts mentioned in this embodiment are according to Figure 4 The placement state in the drawing is determined by the top of the drawing, and the bottom of the drawing is the bottom. Obviously, the front side is on the top of the drawing, and the back side is on the bottom of the drawing.

[0039] The armature assembly includes a stator core 5 and a stator winding 6 wound on the stator core 5. A center hole is provided at the center of the stator core 5, and the center axis 8 is located in the center hole. The stator core 5 is also provided with a plurality of radially extending connecting protrusions 51. In this embodiment, the number of the connecting protrusions 51 is three. A phase ring assembly 2 is installed inside the stator core 5. The phase ring assembly 2 includes a phase ring body 21 made of insulating material, generally plastic material. A first conductive sheet 22, a second conductive sheet 23 and a third conductive sheet 24 are embedded and fixed in the phase ring body 21. A plurality of metal hooks 28 are respectively provided on the first conductive sheet 22, the second conductive sheet 23 and the third conductive sheet 24. The stator winding 6 is wound on the metal hooks 28 according to a set winding method. A first conductive rod 25, a second conductive rod 26 and a third conductive rod 27 are also respectively provided on the first conductive sheet 22, the second conductive sheet 23 and the third conductive sheet 24, wherein the first conductive rod 25, the second conductive rod 26 and the third conductive rod 27 can be formed by bending.

[0040] The phase ring body 21 is provided with a matching avoidance hole 212 that matches with the connecting protrusion 51 on the center hole of the stator core 5. The connecting protrusion 51 extends into the matching avoidance hole 212 and is fixedly connected to the heat dissipation base 1 by bolts, so that the armature assembly is fixed on the heat dissipation base 1 as a whole. The outer periphery of the phase ring body 21 is provided with a clamping structure. The phase ring body 21 is clamped and fixed in the center hole of the stator core 5 by the clamping structure. The first conductive rod 25, the second conductive rod 26 and the third conductive rod 27 pass through the heat dissipation base 1 and are fixed to the PCBA board 4.

[0041] In this embodiment, the clamping structure includes a plurality of axially extending clamping protrusions arranged on the outer periphery of the phase ring body 21. The clamping protrusions are axially extending clamping protrusions, and the ends of the clamping protrusions are provided with guiding inclined surfaces for convenient insertion into the center hole of the stator core 5. The number of clamping protrusions is multiple, respectively arranged on the outer periphery of the phase ring body 21, so that the phase ring body 21 can be better clamped in the center hole of the stator core 5. Of course, the outer periphery of the phase ring body 21 of this embodiment is also provided with a positioning groove 210, and correspondingly, a positioning convex strip is also provided on the hole wall of the center hole of the stator core 5, so as to further limit the installation position of the phase ring body 21.

[0042] The phase ring body 21 is provided with a U-shaped matching hole wall, and the matching hole wall encloses a matching avoidance hole 212 that matches the shape of the connecting protruding portion 51. The matching hole wall is provided with a positioning notch 213, and correspondingly, the connecting protruding portion 51 is provided with a positioning protrusion 52 that is inserted into the positioning notch 213. Among them, the number of matching avoidance holes 212 in this embodiment is three, and positioning notches 213 are provided on the matching hole walls of two matching avoidance holes 212, so the phase ring body 21 needs to be installed at a specific angle, thereby limiting the angular position between the first conductive rod 25, the second conductive rod 26 and the third conductive rod 27 and the stator core 5, and thus ensuring that the first conductive rod 25, the second conductive rod 26 and the third conductive rod 27 are more accurately welded and fixed to the PCBA board 4.

[0043] like Fig. 9 As shown, the phase ring body 21 is also provided with a hollow hole 217 for partially exposing the first conductive sheet 22, the second conductive sheet 23 and the third conductive sheet 24. The position of the metal hook 28 corresponds to the hollow hole 217. The first conductive sheet 22, the second conductive sheet 23 and the third conductive sheet 24 are provided with spot welding protrusions 215 corresponding to the positions of the metal hooks 28 one by one. The spot welding of the metal hook 28 and the wiring harness is more reliable, ensuring the quality of welding.

[0044] like Figure 7 As shown, the phase ring body 21 is further provided with a plurality of reinforcing ribs 211 spanning the hollow holes 217, the first conductive sheet 22, the second conductive sheet 23 and the third conductive sheet 24 respectively penetrate the reinforcing ribs 211, and the first conductive sheet 22, the second conductive sheet 23 and the third conductive sheet 24 are provided with connecting and accommodating holes 216 corresponding to the reinforcing ribs 211, and the phase ring body 21 is further provided with an avoidance gap 214 connected with the hollow holes 217 on the outer side of the metal hook 28. The avoidance gap 214 can increase the gap between the outer side of the metal hook 28 and the phase ring body 21, thereby avoiding the excessive temperature of the phase ring body 21 caused by the excessive temperature of the metal hook 28 during welding.

[0045] like Figure 5 and Figure 7As shown, the heat dissipation base 1 is provided with three lower sealing columns 101 extending toward the front, and the phase ring assembly 2 is provided with three upper sealing columns 29 extending toward the back. The upper sealing columns 29 and the lower sealing columns 101 are respectively provided with upper sealing cavities 291 and lower sealing cavities 103. The first conductive rod 25, the second conductive rod 26 and the third conductive rod 27 respectively penetrate the corresponding upper sealing columns 29 and the lower sealing columns 101 and are welded and fixed to the PCBA board 4. The first conductive rod 25, the second conductive rod 26 and the third conductive rod 27 are all provided with sealing plugs 3, and each sealing plug 3 is extruded and set in the corresponding upper sealing cavity 291 and the lower sealing cavity 103.

[0046] The upper sealing cavity 291 is a conical cavity with a small upper part and a large lower part, and the lower sealing cavity 103 is a conical cavity with a large upper part and a small lower part. The sealing plug 3 includes an upper frustum body 31 and a lower frustum body 32 connected to each other, and a step surface is formed between the upper frustum body 31 and the lower frustum body 32. The upper frustum body 31 is inserted into the upper sealing cavity 291, and the lower frustum body 32 is inserted into the lower sealing cavity 103. A through-hole 34 is provided on the sealing plug 3. The upper end of the hole 34 is provided as a conical guide section 33 to facilitate the insertion of three conductive rods.

[0047] The upper edge of the lower sealing cavity 103 is also provided with an annular groove 104. The bottom of the lower sealing column 101 is provided with a bottom cavity 102 whose size is larger than the lower sealing cavity 103, and the lower end of the lower frustum body 32 is located in the bottom cavity 102. The heat dissipation base 1 is provided with heat dissipation reinforcement ribs 105 around the lower sealing column 101.

[0048] The motor assembly in this embodiment has at least the following advantages over the current motors: 1. The first conductive rod 25, the second conductive rod 26 and the third conductive rod 27 of the motor in this embodiment are directly connected to the first conductive sheet 22, the second conductive sheet 23 and the third conductive sheet 24, which can save a step of welding; 2. The first conductive rod 25, the second conductive rod 26 and the third conductive rod 27 in the motor of this embodiment directly penetrate the heat dissipation base 1 and are welded to the PCBA board 4, and there is no need to use a conductive bracket, which reduces the difficulty of assembly and reduces the cost; 3. In the motor of the present invention, the sealing sleeve can be better squeezed between the phase ring assembly 2 and the heat dissipation base 1, thereby further improving the sealing performance.

[0049] The above-described embodiments are merely descriptions of preferred implementations of the present invention and are not intended to limit the scope of the present invention. Various modifications and alterations to the technical solution of the present invention, without departing from the design spirit of the present invention, should fall within the scope of protection defined in the claims of the present invention.

Claims

1. An automobile cooling fan motor assembly, comprising a controller component, the controller component comprising a housing consisting of a cooling base and a rear end cover, a PCBA board being fixedly arranged in the housing, a central axis being arranged on the front of the cooling base, an armature assembly being installed on the front of the cooling base, an outer rotor assembly being rotatably installed on the central axis, characterized in that: The armature assembly includes a stator core and a stator winding wound on the stator core. A center hole is provided at the center of the stator core, and the center axis is located in the center hole. The stator core is also provided with a plurality of radially extending connecting protrusions. A phase ring assembly is installed inside the stator core. The phase ring assembly includes a phase ring body made of insulating material. A first conductive sheet, a second conductive sheet and a third conductive sheet are embedded and fixed in the phase ring body. A plurality of metal hooks are respectively provided on the first conductive sheet, the second conductive sheet and the third conductive sheet. The stator winding is wound around the metal ring body according to a set winding method. On the protective hook, the first conductive sheet, the second conductive sheet and the third conductive sheet are respectively provided with a first conductive rod, a second conductive rod and a third conductive rod, the phase ring body is provided with a matching avoidance hole matched with the connecting protrusion on the central hole of the stator core, the connecting protrusion extends into the matching avoidance hole and is fixedly connected to the heat dissipation base by bolts, the outer periphery of the phase ring body is provided with a clamping structure, the phase ring body is clamped and fixed in the central hole of the stator core by the clamping structure, the first conductive rod, the second conductive rod and the third conductive rod penetrate the heat dissipation base and are fixed to the PCBA board.

2. The automotive cooling fan motor assembly according to claim 1, characterized in that: The clamping structure comprises a plurality of axially extending clamping protrusions arranged on the outer periphery of the phase ring body, and the ends of the clamping protrusions are provided with guiding inclined surfaces for convenient insertion into the central hole of the stator core.

3. The automotive cooling fan motor assembly according to claim 1, characterized in that: The phase ring body is provided with a U-shaped matching hole wall, which encloses a matching avoidance hole adapted to the shape of the connecting protrusion. The matching hole wall is provided with a positioning notch, and correspondingly, the connecting protrusion is provided with a positioning protrusion which is inserted into the positioning notch.

4. The automotive cooling fan motor assembly according to claim 1, characterized in that: The phase ring body is also provided with hollow holes for partially exposing the first conductive sheet, the second conductive sheet and the third conductive sheet. The positions of the metal hooks correspond to the hollow holes. The first conductive sheet, the second conductive sheet and the third conductive sheet are provided with spot welding protrusions corresponding to the positions of the metal hooks.

5. The automotive cooling fan motor assembly according to claim 4, characterized in that: The phase ring body is also provided with a plurality of reinforcing ribs spanning the hollow holes, the first conductive sheet, the second conductive sheet and the third conductive sheet respectively penetrate the reinforcing ribs, the first conductive sheet, the second conductive sheet and the third conductive sheet are provided with connecting and accommodating holes corresponding to the reinforcing ribs, and the phase ring body is also provided with an avoidance gap connected to the hollow holes on the outer side of the metal protective hook.

6. The automotive cooling fan motor assembly according to claim 1, characterized in that: The heat dissipation base is provided with three lower sealing columns extending toward the front, the phase ring assembly is provided with three upper sealing columns extending toward the back, the upper sealing columns and the lower sealing columns are respectively provided with upper sealing cavities and lower sealing cavities, the first conductive rod, the second conductive rod and the third conductive rod respectively penetrate the corresponding upper sealing columns and the lower sealing columns and are welded and fixed to the PCBA board, the first conductive rod, the second conductive rod and the third conductive rod are all provided with sealing plugs, and each sealing plug is extruded and arranged in the corresponding upper sealing cavity and the lower sealing cavity.

7. An automotive cooling fan motor assembly as claimed in claim 6, characterized in that: The upper sealing cavity is a conical cavity with a small upper part and a large lower part, and the lower sealing cavity is a conical cavity with a large upper part and a small lower part. The sealing plug includes an upper frustum body and a lower frustum body connected to each other, and a step surface is formed between the upper frustum body and the lower frustum body. The upper frustum body is inserted into the upper sealing cavity, and the lower frustum body is inserted into the lower sealing cavity. The sealing plug is provided with a through sleeve hole.

8. The automotive cooling fan motor assembly according to claim 7, characterized in that: The upper edge of the lower sealing cavity is also provided with an annular groove.

9. The automotive cooling fan motor assembly according to claim 8, characterized in that: The bottom of the lower sealing column is provided with a bottom cavity whose size is larger than the lower sealing hole cavity, and the lower end of the lower frustum body is located in the bottom cavity.

10. The automotive cooling fan motor assembly according to claim 9, characterized in that: Heat dissipation reinforcing ribs are arranged around the lower sealing column on the heat dissipation base.

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