CN108880125A - A kind of controller assemblies of motor - Google Patents

Abstract

The invention discloses a kind of controller assemblies of motor, including shell, conducting bracket and PCBA board, the front of radiating seat is provided with central axis, there are three through holes for setting on radiating seat, mounting hole is provided on conducting bracket, the conducting bracket back is provided with positioning embeded groove, conductive link has been filled in each mounting hole, through hole is run through in the front end of the conductive link, it is embedded into positioning embeded groove after the endpiece bending of the conductive link, one end of conducting bracket is provided with harness mounting plate portion, there are four harness conductive pins for harness mounting plate portion setting, PCBA board is provided on the thermally conductive platform of radiating seat, positioning support structure is provided on radiating seat and conducting bracket, inductance, capacitor, conductive link, harness conductive pin is welded and fixed with the conductive hole in PCBA board.The controller assemblies eliminate conductive connecting piece, and can preferably fix conductive link, reduce welding position at one, improve electrical efficiency.

Description

A motor controller component

technical field

The invention relates to a controller assembly, in particular to a motor controller assembly.

Background technique

Motors are commonly used power devices and are used in various industries. At present, brushless motors can be controlled by PCBA boards. The structure of the brushless motor mainly includes a controller assembly, a stator assembly, and a rotor assembly, wherein the controller assembly includes a shell composed of a heat sink and a rear end cover, and a conductive support and a PCBA board are arranged in the shell, and the heat sink There is a central axis on the front of the heat sink, and the heat sink is provided with a capacitor installation area, an inductance installation area, a conductive bracket installation area, and a harness joint area. The conductive bracket is installed in the conductive bracket installation area, and the capacitor and inductor are installed in the corresponding area. , the PCBA board is located on the back of the conductive bracket. However, the current controller component has the following disadvantages:

1. The main structure of the current conductive bracket includes a conductive connecting piece and a plastic bracket member coated on the outside of the conductive connecting piece. The conductive connecting piece has pointed pins bent toward the direction, and the pointed pins are inserted into the connection holes of the PCBA board The inner part is welded and fixed, and the plastic bracket component exposes part of the conductive connecting piece, and then three conductive connecting rods are welded on the exposed part of the conductive connecting piece, and the other ends of the three conductive connecting rods pass through the heat sink and are electrically connected with the stator winding. However, the conductive connecting rod is welded with the conductive connecting piece, the connecting piece is welded with the PCBA board, and the other end of the conductive connecting rod is welded with the winding. There are many welding parts, and the production is difficult; especially the pointed pins on the connecting piece need to be connected with the PCBA board. The alignment of the tiny connection holes makes assembly difficult. At the same time, the connection between the connecting piece of the current conductive bracket and the conductive connecting rod is only fixed by welding, and the length of the conductive connecting rod is relatively long. In the actual assembly process, it may Because the position of the connecting rod is incorrect or deformed, the connecting rod needs to be moved. Like this, it is easy to loosen between the connecting rod and the conductive connecting piece, resulting in poor point contact.

2. In the current controller assembly, there is a heat-conducting adhesive between the PCBA board and the heat sink for heat conduction, but due to fluctuations in the amount of glue applied, the bonding between the PCBA board and the heat sink is uneven, and the PCBA board The support is unreasonable, the flatness is more difficult to guarantee, and the heat conduction is uneven.

3. In the current controller components, the conductive bracket is provided with wire harness conductive pins, which are used to connect and conduct electricity with the wire harness, while the conductive bracket is only placed in the conductive bracket placement area of the heat sink, and the wire harness is connected to the wire harness conductive pins. , the wire harness may be pulled during subsequent use, and the pulling force may deform the conductive bracket, and then the conductive pins of the wire harness may contact with the heat sink to short circuit.

4. In the current controller assembly, the conductive connecting rod directly passes through the through hole and is welded with the stator winding, and the motor will vibrate during operation. During the vibration process, the conductive connecting rod may contact the through hole, resulting in intermittent the short circuit,

5. When assembling between the central shaft and the heat sink in the current controller assembly, the central shaft is pressed into the fixed cylinder of the heat sink by a press to fit tightly with the fixed cylinder. However, due to the extension length of the central shaft directly The assembly gap between the stator winding and the rotor assembly is affected. Therefore, the central shaft needs to be axially positioned for the insertion depth, and the current positioning is to control the insertion depth of the central shaft by controlling the stroke of the press head of the press. Although this can To achieve the purpose of control, but there may be errors in the detection of the stroke of the pressure head, and absolute positioning cannot be realized.

Contents of the invention

The technical problem to be solved by the present invention is to provide a motor controller assembly, which saves the conductive connecting piece, and can better fix the conductive connecting rod, reduce one welding position, and improve the conductive efficiency.

In order to solve the above technical problems, the technical solution of the present invention is: a controller assembly of a motor, including a housing composed of a heat sink and a rear end cover, a conductive support and a PCBA board are arranged in the housing, and the heat sink A central axis is provided on the front, and the heat sink is provided with a capacitor installation area, an inductor installation area, a conductive bracket installation area, a wire harness joint area and a heat conduction platform, the conductive bracket is placed in the conductive bracket installation area, and the capacitor installation area is installed Inductors are provided in the installation area of capacitors and inductances, and three through holes are arranged on the conductive support area on the heat sink, and three installation holes corresponding to the positions of the through holes are provided on the conductive support. The back is provided with a positioning slot extending along the back which communicates with the three mounting holes, and a conductive connecting rod is inserted in each mounting hole. The front end of the conductive connecting rod passes through the through hole, and the tail section of the conductive connecting rod is bent After being folded, it is inserted into the positioning slot, and the tail end of each conductive link protrudes from the positioning slot after being bent. One end of the conductive bracket is provided with a wiring harness mounting plate, which is located in the wiring harness joint area and Wire harness conductive pins are provided, a PCBA board is arranged on the heat conduction platform of the heat sink, a positioning support structure for positioning and supporting the PCBA board is provided on the heat sink and the conductive support, and the inductance, capacitance, and conductive connecting rod , The conductive pins of the wiring harness are welded and fixed with the corresponding conductive holes on the PCBA board.

As a preferred solution, the positioning support structure includes a plurality of positioning support blocks on the shelf arranged on the conductive support and a plurality of positioning support blocks on the seat arranged on the heat dissipation seat, and the positioning support blocks on the shelf and the seat The back surfaces of the upper positioning support blocks are flush, and the back surfaces of at least two upper positioning support blocks are provided with positioning columns. Fixed screw holes are provided, the PCBA board is set on the heat conduction platform through thermal conductive glue, the PCBA board is supported by the positioning support block on the frame and the positioning support block on the seat, and the positioning hole matching the positioning column is provided on the PCBA board , the PCBA board is fixed on the heat sink by screws installed in the fixing screw holes.

As a preferred solution, the positioning support block on the seat includes several positioning support blocks on the platform arranged on the heat conduction platform. The back surfaces of the upper positioning support block and the upper positioning support block are flush.

As a preferred solution, the wiring harness installation plate portion includes a vertical plate portion and wing plate portions located on both sides of the vertical plate portion, the wing plate portion and the vertical plate portion are arranged at an obtuse angle, and the wing plate portion A guide brace is provided on the outer surface, and the thickness of the front part of the guide brace is thinner than that of the back to form a guide slope. The wiring harness joint area is provided with a positioning plate adapted to the wing plate. The positioning plate The part is tightly matched with the guide block.

As a preferred solution, at least two insulating support push rods are arranged on the board surface of the vertical board part, and the conductive pin of the wire harness includes a pin body and a connecting cylinder part, and the pin body extends to the reverse side, so One end of the connecting tube part is connected to the pin half, the other end penetrates through the vertical plate part and protrudes from the vertical plate part, and the end of the insulating support push rod exceeds the other end of the connecting tube part.

As a preferred solution, the positioning slot includes a first groove wall and a second groove wall that cooperate with each other. The ends of the two groove walls far away from the installation hole are provided with limit flanges, and the opposite sides of the first groove wall and the second groove wall are provided with anti-loosening protrusions for placing the conductive connecting rods out.

As a preferred solution, a fixed cylinder is arranged in the center of the front of the heat dissipation seat, and the central axis is fixed in the fixed cylinder, and an adjustment hole for adjusting the axial position of the central axis is arranged on the back of the heat dissipation seat. The hole communicates with the inner hole of the fixing cylinder.

As a preferred solution, a sealing plug is provided in the through hole, and the conductive connecting rod is insulated and installed between the sealing plug and the through hole.

As a preferred solution, the sealing plug includes a sealing plug body and a wiring collet each having a central hole, the sealing plug body includes a first installation cylinder section and a second installation cylinder section, and the first installation cylinder section plug and fixed in the through hole, the wiring collet is provided with a mounting step hole, the outer peripheral surface of the second mounting tube section is provided with an annular or thread-shaped anti-slip protrusion, and the second mounting tube section is plugged into and fixed In the mounting step hole, the conductive connecting rod passes through the central hole of the sealing plug body and the wiring collet.

As a preferred solution, the outer periphery of the heat sink is provided with a fixed connection seat fixed with the harness plug, the fixed connection seat is adapted to the position of the harness joint area, and the outer periphery of the fixed connection seat is provided with a convenient connection with the harness plug. The clamping protrusion is provided, and at least two mounting screw holes are provided on the outer periphery of the fixed connection seat.

After adopting the above technical solution, the effect of the present invention is: since the heat sink is provided with three through holes in the area of the conductive support, and the conductive support is provided with three mounting holes corresponding to the positions of the through holes, The back of the conductive bracket is provided with a positioning slot that communicates with the three mounting holes and extends along the back. A conductive connecting rod is inserted into each mounting hole, and the front end of the conductive connecting rod passes through the through hole. The tail section is bent and embedded in the positioning slot, and the tail end of each conductive connecting rod protrudes from the positioning slot after being bent, so that the conductive connecting rod is inserted and fixed through the mounting hole, and positioned through the positioning slot In this way, the conductive connection is directly welded to the PCBA board and the stator winding, saving the conductive connecting piece embedded in the conductive bracket, the forming of the conductive bracket is simpler, and at the same time, the welding position between the conductive connecting rod and the conductive connecting piece is saved , reduce internal resistance, avoid loosening between the conductive connecting rod and the conductive connecting piece, and at the same time, the positioning slot can accurately limit the position of the conductive connecting rod, avoiding the deflection of the conductive connecting rod, which facilitates the stable welding of the conductive connecting rod and the PCBA board.

And because the positioning support structure includes a plurality of positioning support blocks on the frame arranged on the conductive support and a plurality of positioning support blocks on the seat arranged on the heat sink, the positioning support blocks on the frame and the positioning support blocks on the seat The back surface is flush, and at least two positioning support blocks on the frame are provided with positioning columns on the back, and the positioning columns form positioning steps with the back surface of the positioning support blocks on the frame, and at least three positioning support blocks on the seat are provided with fixing screw holes , the PCBA board is arranged on the heat conduction platform through the heat conduction glue, the PCBA board is supported by the positioning support block on the frame and the positioning support block on the seat, the positioning hole matching the positioning column is arranged on the PCBA board, and the PCBA board The screws installed in the fixing screw holes are fixed on the heat sink, and the positioning support structure can be used to accurately position and support the PCBA board, thus ensuring the flatness of the PCBA board and reducing deformation.

And because the positioning support blocks on the seat include several positioning support blocks on the heat conduction platform, the height of the positioning support blocks on the platform is higher than the heat conduction platform by one heat conduction adhesive layer thickness, the positioning support blocks and the The back surface of the positioning support block on the table is even, and the positioning support block on the table can effectively support the PCBA board, and limit the heat-conducting adhesive layer to make its thickness uniform.

Since the wiring harness installation plate part includes a vertical plate part and wing plate parts located on both sides of the vertical plate part, the wing plate part and the vertical plate part are arranged at an obtuse angle, and the outer surface of the wing plate part is provided with A guide brace block, the thickness of the front part of the guide brace block is thinner than the thickness of the back to form a guide slope, the wiring harness joint area is provided with a positioning plate part adapted to the wing plate, and the positioning plate part is tightened with the guide brace In this way, the guide slope can be used to guide the wiring harness installation plate when placing the conductive bracket, reducing insertion resistance, and after installation, the guide bracket can be tightened with the positioning plate, so that the conductive bracket can be positioned Avoid loosening.

And because at least two insulating support push rods are arranged on the board surface of the vertical board part, the conductive pin of the wire harness includes a pin body and a connecting cylinder part, the pin body extends to the reverse side, and the connecting cylinder part One end is connected with the half body of the pin, and the other end runs through the vertical plate and protrudes from the vertical plate. The end of the insulating support rod exceeds the other end of the connecting cylinder. The insulating support rod can effectively support the heat sink. Internally, avoid the short circuit caused by the contact between the connecting cylinder and the inside of the heat sink. Especially when the wire harness is pulled, the conductive bracket may be deformed and the connecting cylinder will move closer to the inner wall of the heat sink. At this time, due to the existence of the insulating support rod, it can Prevent the connecting cylinder from contacting the inner wall of the heat sink.

And because the positioning slot includes a first groove wall and a second groove wall that cooperate with each other, the first groove wall and the second groove wall are close to the opening of one end of the installation hole, and the first groove wall and the second groove wall are away from the mounting hole. One end of the hole is provided with a limit flange, and the side of the first groove wall and the second groove wall are provided with an anti-off protrusion for placing the conductive connecting rod out. The existence of the protrusion can prevent the conductive connecting rod from coming out of the positioning slot.

And because the front center of the heat dissipation seat is provided with a fixed cylinder, the central axis is fixed in the fixed cylinder, and the back of the heat dissipation seat is provided with an adjustment hole for adjusting the axial position of the central axis. The inner hole is connected, and the positioning can be performed from the back of the central shaft through the adjustment hole. When the central shaft is pressed into the fixed cylinder, it is pressed in through the front of the press head of the press, and at the same time, the positioning shaft can be extended from the adjustment hole, so that the press The press-in depth of the central shaft can be more accurately determined during press-in, and the press-in depth of the central shaft directly affects the installation gap between the rotor and the stator assembly. Therefore, the more accurate the press-in depth, the better the positioning and installation between the rotors. The gap meets the installation requirements, reducing installation errors.

Since the through hole is provided with a sealing plug, and the conductive connecting rod is insulated between the sealing plug and the through hole, the sealing plug can effectively prevent the conductive connecting rod from contacting the through hole and avoid short circuit.

In addition, since the outer periphery of the heat sink is provided with a fixed connection seat fixed to the wire harness plug, the fixed connection seat is adapted to the position of the wire harness joint area, and the outer periphery of the fixed connection seat is provided with a clamping protrusion that is convenient for fixing with the wire harness plug. Moreover, at least two mounting screw holes are provided on the outer periphery of the fixed connection seat, and the fixed connection seat can be suitable for two installation methods of card installation and screw installation, and the installation is firmer and more adaptable.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is the rear perspective view of the embodiment of the present invention;

Fig. 2 is the front perspective view of the embodiment of the present invention;

Fig. 3 is the rear perspective view after removing the rear end cover of the embodiment of the present invention;

Fig. 4 is the rear perspective view of the controller assembly of the embodiment of the present invention without the rear end cover and the PCBA board;

5 is a perspective view of a conductive support;

Fig. 6 is another perspective view of the conductive support;

7 is a schematic diagram of the back structure of the heat sink;

Fig. 8 is a sectional view at A-A place of Fig. 7;

Figure 9 is a cross-sectional view of the sealing plug;

In the attached drawings: 100. Controller component; 1. Radiator seat; 101. Thermal conduction platform; 102. Capacitor installation area; 103. Through hole; 104. Inductor installation area; 107. Positioning support block on the platform; 108. Positioning support block on the seat; 109. Adjustment hole; 110. Fixing screw hole; 111. Fixing cylinder; 112. Positioning plate part; 2. Rear end cover; 3. Wire harness; 4. Central axis; 5. Conductive connecting rod; 6. Sealing plug; 61. Wiring collet; 62. Sealing plug body; 7. Harness plug; 8. PCBA board; 9. Capacitor; 10. Inductance; 11. Conductive bracket; 1101 .Installation hole; 1102. Positioning slot; 11021. First groove wall; 11022. Second groove wall; 11041. Riser part; 11042. Wing part; 1105. Wire harness conductive pin; 11051. Connecting cylinder part; 11052. Pin body; block; 1109. positioning support block on the shelf.

Detailed ways

The present invention will be described in further detail below through specific examples.

As shown in Figures 1 to 9, a controller assembly 100 of a motor includes a housing composed of a heat sink 1 and a rear end cover 2, a conductive support 11 and a PCBA board 8 are arranged inside the housing, and the heat sink The front of 1 is provided with a central axis 4, and the heat sink 1 is provided with a capacitor 9 installation area 102, an inductor 10 installation area 104, a conductive support 11 installation area 106, a harness joint area 105, and a heat conduction platform 101. The conductive support 11 Placed in the installation area 106 of the conductive support 11, the capacitor 9 is installed in the installation area 102 of the capacitor 9, the inductor 10 is installed in the installation area 104 of the inductor 10, and the heat sink 1 is provided with three through holes in the area of the conductive support 11, The conductive bracket 11 is provided with three installation holes 1101 corresponding to the positions of the through holes 103 one by one, and the back of the conductive bracket 11 is provided with a positioning slot 1102 extending along the back that communicates with the three installation holes 1101, and each installation A conductive connecting rod 5 is inserted into the hole 1101. The front end of the conductive connecting rod 5 passes through the through hole 103. The tail section of the conductive connecting rod 5 is bent and inserted into the positioning slot 1102. Each conductive connecting rod 5 After being bent, the tail end protrudes from the positioning slot 1102, and one end of the conductive bracket 11 is provided with a wire harness mounting plate portion 1104, which is located in the wire harness joint area 105 and is provided with four wire harness conductive pins 1105 , the heat conduction platform 101 of the heat sink 1 is provided with a PCBA board 8, the heat sink 1 and the conductive support 11 are provided with a positioning support structure for positioning and supporting the PCBA board 8, the inductor 10, capacitor 9, conductive Both the connecting rod 5 and the conductive pin 1105 of the wiring harness are welded and fixed to the corresponding conductive holes on the PCBA board 8 .

The conductive support 11 is provided with an inductance inserting groove body 1106 which is convenient for embedding the pins of the inductor 10; the conductive support 11 is formed by a mold and is a plastic hollow structure.

The positioning support structure includes a plurality of positioning support blocks 1109 on the shelf arranged on the conductive support 11 and a plurality of positioning support blocks 108 on the seat provided on the heat sink 1, and the positioning support blocks 1109 on the shelf and the positioning support blocks 1109 on the seat The back surfaces of the support blocks 108 are flush, and the backs of the positioning support blocks 1109 on at least two frames are provided with positioning columns 1103, and the corresponding PCBA boards 8 are provided with positioning holes that are set on the positioning columns 1103, so as to realize positioning of the PCBA boards 8. position. The positioning column 1103 forms a positioning step with the back surface of the positioning support block 1109 on the frame, and at least three positioning support blocks 108 on the seat are provided with fixing screw holes 110, and the PCBA board 8 is arranged on the heat conduction platform 101 through heat conduction glue. The PCBA board 8 is supported by the positioning support block 1109 on the frame and the positioning support block 108 on the seat. The PCBA board 8 is provided with a positioning hole matching the positioning column 1103, and the PCBA board 8 is installed in the fixing screw hole 110. The screws are fixed on the heat sink 1.

The positioning support block 108 on the seat includes several positioning support blocks 107 on the platform arranged on the heat conduction platform 101. The back surface of the support block 108 and the positioning support block 107 on the stage are flush. The PCBA board 8 is just supported by the positioning support block 108 on the seat, the positioning support block 107 on the stage, and the positioning support block 1109 on the shelf like this, thereby the distribution is wider, and the support is stable, and the PCBA board 8 is not easily deformed.

As shown in Figure 5 and Figure 6, the wiring harness installation plate portion 1104 includes a vertical plate portion 11041 and wing plate portions 11042 located on both sides of the vertical plate portion 11041, the wing plate portion 11042 forms an obtuse angle with the vertical plate portion 11041 Setting, the outer surface of the wing plate part 11042 is provided with a guiding and tightening block 1108, the thickness of the front part of the guiding and tightening block 1108 is thinner than the thickness of the back to form a guiding slope, and the wiring harness joint area 105 is provided with a wing. The plate portion 11042 is adapted to the positioning plate portion 112 , and the positioning plate portion 112 is tightly matched with the guide brace block 1108 . As shown in Figure 5, the front side of the guide support block is thin, so it is convenient to directly insert and stretch the positioning plate part 112, and when it is fully put in place, the conductive support 11 is relatively stably positioned due to the tightening effect of the guide support block 1108. Between the two positioning plate parts 112, it is not easy to loosen.

As shown in Fig. 3 to Fig. 6, at least two insulating supporting push rods 1107 are arranged on the board surface of the vertical board part 11041, and the conductive pin 1105 of the wire harness includes a pin body 11052 and a connecting cylinder part 11051, the lead The script body 11052 extends to the reverse side, one end of the connecting cylinder part 11051 is connected to the half body of the pin, and the other end penetrates the vertical plate part 11041 and protrudes from the vertical plate part 11041, and the end of the insulating support rod 1107 exceeds the connecting cylinder The other end of the part 11051 , the insulating support rod 1107 is used to support the vertical plate part 11041 to prevent the connecting cylinder part 11051 from contacting the inner wall of the heat sink 1 .

The positioning slot 1102 includes a first groove wall 11021 and a second groove wall 11022 that cooperate with each other. The first groove wall 11021 and the second groove wall 11022 are open near one end of the installation hole 1101. The first groove wall 11021 and the second groove wall 11021 are The end of the second groove wall 11022 far away from the installation hole 1101 is provided with a limit flange 11023, and the opposite side of the first groove wall 11021 and the second groove wall 11022 is provided with an anti-off protrusion 11024 for placing the conductive connecting rod 5 to escape. Both ends of the first groove wall 11021 and the second groove wall 11022 are disconnected, therefore, it is convenient to expand when the conductive connecting rod 5 is embedded, and after expanding, the anti-off protrusion 11024 can play an anti-off effect .

As shown in Figure 9, a fixed cylinder 111 is provided at the center of the front of the heat sink 1, and the central shaft 4 is fixed in the fixed cylinder 111. An adjustment hole 109 , the adjustment hole 109 communicates with the inner hole of the fixing cylinder 111 .

A sealing plug 6 is disposed in the through hole 103 , and the conductive connecting rod 5 is insulated through the sealing plug 6 and the through hole 103 . The sealing plug 6 includes a sealing plug body 62 and a wiring collet 61 each having a central hole. The sealing plug body 62 includes a first installation barrel section and a second installation barrel section, and the first installation barrel section is plugged into and fixed on the In the through hole 103, the wiring collet 61 is provided with an installation step hole, and the outer peripheral surface of the second installation cylinder section is provided with an annular or threaded anti-slip protrusion, and the second installation cylinder section is plugged into and fixed on the In the installation step hole, the conductive connecting rod 5 passes through the central hole of the sealing plug body 62 and the wiring collet 61 . The outer periphery of the heat sink 1 is provided with a fixed connection seat fixed with the wire harness plug 7, and the fixed connection seat is adapted to the position of the wire harness joint area 105. and at least two mounting screw holes are provided on the outer periphery of the fixed connection seat. As shown in Figures 2 to 4, the wire harness plug 7 is directly fixed on the fixed connection seat, and its fixing method can be clamped or screwed, or both can be fixed at the same time.

The above-described embodiments are only descriptions of the preferred implementations of the present invention, and are not intended to limit the scope of the present invention. On the basis of not departing from the design spirit of the present invention, various deformations and transformations made to the technical solutions of the present invention shall be implemented. Into the scope of protection determined by the claims of the present invention.

Claims (10)

1. A controller assembly of a motor, comprising a shell made of a heat sink and a rear end cover, a conductive support and a PCBA board are arranged in the shell, the front of the heat sink is provided with a central axis, and it is characterized in that: The heat sink is provided with a capacitor installation area, an inductance installation area, a conductive support installation area, a wire harness joint area and a heat conduction platform. An inductance is provided, and three through-holes are arranged in the area of the conductive support on the heat sink, and three mounting holes corresponding to the positions of the through-holes are provided on the conductive support, and three mounting holes are provided on the back of the conductive support. The holes are connected to the positioning slots extending along the back, and a conductive connecting rod is inserted into each mounting hole. The front end of the conductive connecting rods passes through the through holes, and the tail section of the conductive connecting rods is bent and inserted into the positioning slots. Inside, the tail end of each conductive link protrudes from the positioning slot after being bent, and one end of the conductive bracket is provided with a wiring harness mounting plate, which is located in the wiring harness joint area and is provided with a wiring harness conductive pin, The heat conduction platform of the heat sink is provided with a PCBA board, and the heat sink and the conductive support are provided with a positioning support structure for positioning and supporting the PCBA board. The inductance, capacitance, conductive connecting rod, and wire harness conductive pins are all connected The corresponding conductive holes on the PCBA board are soldered and fixed. 2. The controller assembly of a motor according to claim 1, wherein the positioning support structure includes a plurality of positioning support blocks on the shelf arranged on the conductive support and a plurality of seats arranged on the heat dissipation seat The upper positioning support block, the back surface of the positioning support block on the frame and the positioning support block on the seat are flush, and the back surfaces of at least two positioning support blocks on the frame are provided with positioning columns, and the positioning columns are aligned with the back surface of the positioning support block on the frame. A positioning step is formed, at least three positioning support blocks on the seat are provided with fixing screw holes, the PCBA board is arranged on the heat conduction platform through a heat conduction glue, and the PCBA board is supported by the positioning support block on the shelf and the positioning support block on the seat, The PCBA board is provided with a positioning hole matched with the positioning column, and the PCBA board is fixed on the heat sink by the screw installed in the fixing screw hole. 3. The controller assembly of a kind of motor as claimed in claim 2, characterized in that: the positioning support block on the seat includes several positioning support blocks on the platform arranged on the heat conduction platform, and the positioning support block on the platform The height of the heat conduction platform is higher than the thickness of a heat conduction adhesive layer, and the back surfaces of the positioning support blocks on each seat and the positioning support blocks on the platform are flush. 4. A controller assembly for a motor according to claim 1, wherein the wiring harness mounting plate portion comprises a vertical plate portion and wing plate portions located on both sides of the vertical plate portion, and the wing plate portion is connected to the vertical plate portion The plate parts are arranged at an obtuse angle, and a guide tightening block is arranged on the outer surface of the wing part. The thickness of the front part of the guide tightening block is thinner than that of the back to form a guide slope. The harness joint area is provided with A positioning plate part adapted to the wing plate part, and the positioning plate part is tightened and matched with the guide brace block. 5. The controller assembly of a motor as claimed in claim 4, wherein at least two insulating supporting push rods are arranged on the board surface of the vertical board part, and the conductive pin of the wire harness includes a pin body and the connecting cylinder, the pin body extends to the opposite side, one end of the connecting cylinder is connected to the half of the pin, the other end penetrates the vertical plate and protrudes from the vertical plate, and the end of the insulating support push rod exceeds Connect the other end of the barrel. 6. The controller assembly of a motor according to claim 1, wherein the positioning slot includes a first groove wall and a second groove wall that cooperate with each other, and the first groove wall and the second groove One end of the wall adjacent to the installation hole is open, and the ends of the first groove wall and the second groove wall away from the installation hole are provided with limit flanges. Anti-off protrusions. 7. A motor controller assembly according to claim 1, characterized in that: a fixed cylinder is arranged in the center of the front of the heat sink, the central axis is fixed in the fixed cylinder, and a useful The adjustment hole is located at the axial position of the adjustment central axis, and the adjustment hole communicates with the inner hole of the fixed cylinder. 8. A controller assembly for a motor according to any one of claims 1 to 7, characterized in that: a sealing plug is provided in the through hole, and the conductive connecting rod runs through the insulation between the sealing plug and the through hole. set up. 9. A controller assembly of a motor as claimed in claim 8, wherein the sealing plug comprises a sealing plug body and a wiring collet each having a central hole, and the sealing plug body includes a first mounting cylinder section and a wiring collet. The second installation cylinder section, the first installation cylinder section is plugged into and fixed in the through hole, the wiring collet is provided with an installation step hole, and the outer peripheral surface of the second installation cylinder section is provided with a ring or thread-shaped The anti-slip protrusion, the second installation cylinder section is plugged and fixed in the installation step hole, and the conductive connecting rod passes through the central hole of the sealing plug body and the wiring collet. 10. A controller assembly for a motor according to claim 9, characterized in that: the outer periphery of the heat sink is provided with a fixed connection seat fixed to the wire harness plug, and the fixed connection seat is adapted to the position of the wire harness joint area, The outer periphery of the fixed connection seat is provided with snap-in protrusions for fixing with the wire harness plug, and the outer periphery of the fixed connection seat is also provided with at least two installation screw holes.