An assembled motor controller

Abstract

The utility model discloses a kind of assembled motor controllers, including: the casing with bottom wall and the cover plate being set on the casing, motor drive circuit board including power circuit board, peripheral and control circuit board located above power circuit board are provided in casing, peripheral and control circuit board are provided with peripheral circuit, power interface, motor interface, signal transmission interface and at least one interboard connection female, peripheral circuit includes several electrolytic capacitors, several power devices and the interboard connection pin corresponding to interboard connection female one-to-one are provided in power circuit board, power interface is arranged in the lateral wall of casing, motor interface and signal transmission interface are arranged in the cover plate. The assembled motor controller of the utility model can be directly plugged into the motor, the structure is very compact, greatly facilitates installation, and saves cost.

Description

Technical Field

[0001] This utility model relates to a motor controller, specifically a motor controller for controlling electric vehicles. Background Technology

[0002] Currently, the motor controller used in electric vehicles and the motor it controls are usually independent entities that need to be placed separately in different locations. This not only increases installation costs but also requires dedicated cables to connect the two, increasing manufacturing costs. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a modular motor controller that can be directly assembled onto a motor.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a modular motor controller, comprising: a housing with a bottom wall and a cover plate disposed on the housing, wherein a motor drive circuit board is disposed in the housing, the motor drive circuit board comprising: a power circuit board disposed on the bottom surface of the housing and a peripheral and control circuit board disposed above the power circuit board, the peripheral and control circuit board comprising: an upper printed circuit board, and peripheral circuits, a power interface, a motor interface, a signal transmission interface and at least one inter-board connection pin disposed on the upper printed circuit board, the peripheral circuit comprising: a plurality of electrolytic capacitors; the power circuit board comprising: a lower printed circuit board and a plurality of power devices disposed on the lower printed circuit board, and inter-board connection pins corresponding one-to-one with the inter-board connection pins; the specific arrangement of the motor drive circuit board is as follows: the lower printed circuit board is provided with at least three mounting pad holes and a... A corresponding electrical connection support post is provided on the annular pad of the mounting pad hole. The electrical connection support post has a hollow structure. The bottom surface of the housing has a fixing mounting hole corresponding to the mounting pad hole. The upper printed circuit board has mounting pad holes corresponding to the corresponding mounting pad holes on the lower printed circuit board. After the screw is fitted with an insulating particle on its top, it is passed through the mounting pad hole on the upper printed circuit board, the corresponding electrical connection support post, and the corresponding mounting pad hole on the lower printed circuit board in sequence, and tightened into the fixing mounting hole on the bottom surface of the housing. Alternatively, an insulating sleeve is placed in the electrical connection support post, and then the screw is passed through the mounting pad hole on the upper printed circuit board, the insulating sleeve in the corresponding electrical connection support post, and the corresponding mounting pad hole on the lower printed circuit board in sequence, and tightened into the fixing mounting hole on the bottom surface of the housing. The power interface is installed in the side wall of the housing, and the motor interface and signal transmission interface are installed in the cover plate.

[0005] As a preferred embodiment, in the assembled motor controller, a rotor through hole corresponding to the motor rotor is provided on the bottom wall of the housing, and a rotor through hole corresponding to the motor rotor is provided on the cover plate. After the motor rotor passes through the cover plate and the bottom wall of the housing in sequence, a fan is provided.

[0006] As a preferred embodiment, in the assembled motor controller, the power circuit board is positioned towards one side of the housing, and the peripheral circuitry is positioned towards the other side of the housing. At least one pad is provided on the bottom surface of the housing, corresponding to the area of ​​the peripheral circuitry on the upper printed circuit board. A mounting hole is provided on the end face of the pad. The upper printed circuit board has mounting through holes corresponding to the mounting holes on the pads. A screw is selected, passes through the mounting through holes on the upper printed circuit board, and is tightened into the mounting holes on the pads.

[0007] As a preferred embodiment, in the assembled motor controller, the specific arrangement of the inter-board connection nut is as follows: the connection nut is located on the side of the first printed circuit board opposite to the inter-board connection pins. Correspondingly, the first printed circuit board has pin holes corresponding to the inter-board connection pins. After passing through the pin holes, the inter-board connection pins are inserted into the corresponding connection nut.

[0008] As a preferred embodiment, in the aforementioned modular motor controller, the lower printed circuit board is provided with three inter-board connection pin headers, and correspondingly, the upper printed circuit board is provided with three inter-board connection female headers.

[0009] As a preferred embodiment, in the assembled motor controller, the peripheral and control circuit boards are of a split structure, namely: the peripheral and control circuit boards include two independent circuit boards, a control circuit board and a peripheral circuit board. Correspondingly, the upper printed circuit board includes: a first upper printed circuit board and a second upper printed circuit board. The first upper printed circuit board and the power circuit board are located on the same side of the housing, while the second upper printed circuit board is located on the other side of the housing. The power interface, motor interface, signal transmission interface, and at least one inter-board connector are located on the first upper printed circuit board, and the peripheral circuits are located on the second upper printed circuit board.

[0010] As a preferred embodiment, in the assembled motor controller, the motor interface and the signal transmission interface are integrated into a single structure, forming a signal transmission and motor interface. The cover plate has an installation window corresponding to the signal transmission and motor interface, and the signal transmission and motor interface passes through the installation window on the cover plate.

[0011] As a preferred embodiment, in the assembled motor controller, an annular protrusion is provided on the bottom surface of the housing around the rotor through hole, forming a guide sleeve structure.

[0012] As a preferred embodiment, in the assembled motor controller, the housing has a cooling channel on the outer side of its bottom wall, and the housing has two cooling connectors that are connected one-to-one with the two ends of the cooling channel.

[0013] As a preferred embodiment, in the assembled motor controller, the cooling channel is specifically configured as follows: the bottom wall of the housing has a cooling cavity and an end cap covering the cooling cavity on its outer side. A barrier dam is provided on the side wall of the cooling cavity between the two cooling joints. The barrier dam has protrusions that open to both sides. The protrusions form guide dikes on both sides of the barrier dam. The two guide dikes form guide grooves between the corresponding parts of the side wall of the cooling cavity and the side of the barrier dam. Several staggered guide dikes are provided on the side of the protrusion away from the barrier dam and the corresponding parts of the side wall of the cooling cavity, thereby forming a meandering channel between the protrusion and the side wall of the cooling cavity. The two ends of the meandering channel are connected to the corresponding guide grooves.

[0014] As a preferred embodiment, in the assembled motor controller, a downwardly recessed heat dissipation platform corresponding to the lower printed circuit board is provided on the bottom surface of the housing, and the lower printed circuit board is an aluminum substrate that is attached to the heat dissipation platform.

[0015] As a preferred embodiment, in the assembled motor controller, the housing has at least three housing mounting ears evenly arranged circumferentially on its mounting edge, and the housing mounting ears have mounting holes. Correspondingly, the cover plate has corresponding cover plate mounting ears on its mounting edge, and the cover plate mounting ears have mounting holes.

[0016] As a preferred embodiment, in the assembled motor controller, the housing has a plurality of heat dissipation fins arranged circumferentially on the outer surface of its sidewall.

[0017] The beneficial effects of this utility model are:

[0018] 1. This utility model incorporates the motor interface and signal transmission interface within the cover plate, allowing direct connection to the corresponding interfaces on the motor. This enables the housing and motor to be assembled together, forming a combined unit. During installation, only this combined unit needs to be installed, reducing space requirements and simplifying installation. Furthermore, this utility model uses electrical connection support columns to support two independent circuit boards into a three-dimensional structure. These support columns not only provide support but also serve as electrical connections, achieving two goals at once. This results in a very compact structure for the motor drive circuit board, making installation convenient and cost-effective.

[0019] 2. This utility model significantly improves the heat dissipation effect of the housing by opening rotor through holes corresponding to the motor rotor in the bottom wall and cover plate of the housing, passing the motor rotor through the cover plate and the bottom wall of the housing in sequence, and setting a fan to cool the housing.

[0020] 3. This utility model moves the power circuit board to one side of the housing and the peripheral circuits on the upper printed circuit board to the other side of the housing. It also sets a pad on the bottom surface of the housing that matches the area where the peripheral circuits on the upper printed circuit board are located. This makes the area where the peripheral circuits on the upper printed circuit board are located supported and fixed on the pad, making the installation of the upper printed circuit board more stable.

[0021] 4. By setting the inter-board connection header on the side of the first printed circuit board away from the inter-board connection header, the spacing between the upper and lower printed circuit boards is only related to the inter-board connection header. The upper printed circuit board is already used to install the motor interface and signal transmission interface on this side, which reduces the height of the entire motor drive circuit board and thus reduces the size of the entire assembled motor controller.

[0022] 5. This utility model increases the strength of the housing at the rotor through hole by providing an annular protrusion around the rotor through hole on the bottom surface of the housing to form a guide sleeve structure, and also makes the positioning of the lower printed circuit board more convenient.

[0023] 6. This utility model provides a cooling channel on the outer side of the bottom wall of the housing and two cooling connectors on the housing that correspond one-to-one with the two ends of the cooling channel, thereby cooling the housing by liquid cooling and greatly improving the heat dissipation effect of the housing.

[0024] 7. This utility model provides a recessed heat dissipation platform on the bottom surface of the housing, and sets the lower printed circuit board in a shape corresponding to the recessed heat dissipation platform. During installation, the lower printed circuit board can be directly placed on the recessed heat dissipation platform for positioning, making installation very convenient. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the internal three-dimensional structure of the motor controller of the present invention in the first embodiment.

[0026] Figure 2 This is a schematic diagram of the three-dimensional structure of the shell.

[0027] Figure 3 This is a three-dimensional structural diagram of a power circuit board.

[0028] Figure 4 This is a schematic diagram of the mounting structure of the power circuit board and the peripheral and control circuit boards.

[0029] Figure 5 This is a three-dimensional structural diagram of the motor controller described in this utility model.

[0030] Figure 6 This is a three-dimensional structural diagram of the motor.

[0031] Figure 7 This is a schematic diagram of the installation structure of the motor and motor controller.

[0032] Figure 8 This is an exploded structural diagram of the motor and motor controller.

[0033] Figures 1 to 8 The reference numerals in the attached drawings are as follows: 1. Housing; 11. Housing mounting ear; 111. Mounting hole; 100. Bottom surface; 101. Heat dissipation platform; 1011. Fixed mounting hole; 109. Rotor through hole; 13. Pad; 15. Annular protrusion; 18. Heat dissipation fins; 19. Cover; 2. Cover plate; 21. Cover plate mounting ear; 211. Mounting hole; 23. Mounting window; 3. Peripheral and control circuit board; 30. Upper printed circuit board; 31. First board connection busbar; 32. Second board connection busbar; 33. Third board connection busbar; 37. Control side signal transmission. 371 Motor interface, 372 Signal transmission interface, 38 Power interface, 39 Rotor through-hole, 41 Electrolytic capacitor, 5 Power circuit board, 50 Lower printed circuit board, 509 Rotor through-hole, 51 First board connection pin header, 52 Second board connection pin header, 53 Third board connection pin header, 55 Electrical connection support column, 56 Insulating sleeve, 58 Power device, 8 Screw, 9 Motor, 91 Motor housing mounting lug, 911 Mounting hole, 97 Motor side signal transmission and motor interface, 98 Fan, 99 Rotor.

[0034] Figure 9 This is a schematic diagram of the internal three-dimensional structure of the second embodiment of the motor controller described in this utility model.

[0035] Figure 10This is a schematic diagram of the mounting structure of the power circuit board and the peripheral circuit board.

[0036] Figure 11 This is a schematic diagram of the installation structure of the power circuit board, peripheral circuit boards, and control circuit boards.

[0037] Figures 9 to 11 The reference numerals in the attached drawings are as follows: 1. Housing, 11. Housing mounting ear, 111. Mounting hole, 15. Annular protrusion, 18. Heat dissipation fins, 19. Cover, 2. Cover plate, 21. Cover plate mounting ear, 211. Mounting hole, 23. Mounting window, 3. Control circuit board, 30. First upper layer printed circuit board, 31. First inter-board connection busbar, 32. Second inter-board connection busbar, 33. Third inter-board connection busbar, 37. Control side signal transmission and motor interface, 371. Motor interface, 372. Signal transmission interface, 38. Power interface, 4. Peripheral circuit board, 40. Second upper layer printed circuit board, 41. Electrolytic capacitor, 5. Power circuit board.

[0038] Figure 12 This is a three-dimensional structural diagram of the third embodiment of the motor controller described in this utility model.

[0039] Figure 12 The reference numerals in the attached drawings are as follows: 1, shell; 12, end cap; 141, first cooling joint; 142, second cooling joint; 17, cooling cavity; 170, barrier dam; 171, first guide dam; 1711, first guide channel; 172, second guide dam; 1721, second guide channel; 173, guide dam; 1731, arc-shaped groove. Detailed Implementation

[0040] The following describes in detail, with reference to the accompanying drawings, a specific implementation scheme of the modular motor controller of this utility model.

[0041] Example 1:

[0042] like Figure 1 , Figure 5 and Figure 6 As shown, the modular motor controller of this utility model comprises: a cylindrical housing 1 with a bottom wall, and a cover plate 2 disposed on the housing 1. A rotor through hole 109 corresponding to the rotor 99 of the motor 9 is formed on the bottom wall of the housing 1, and a rotor through hole corresponding to the rotor 99 of the motor 9 is formed on the cover plate 2 (this is conventional technology in the art and will not be described further here). A motor drive circuit board is disposed in the housing 1, such as... Figure 3 and Figure 4As shown, the motor drive circuit board includes: a power circuit board 5 disposed on the bottom surface 100 of the housing 1, and a peripheral and control circuit board 3 disposed above the power circuit board 5. The peripheral and control circuit board 3 includes: an upper printed circuit board 30, and peripheral circuits including several electrolytic capacitors 41 disposed on the upper printed circuit board 30, a control-side signal transmission and motor interface 37, a power interface 38, and a first inter-board connection busbar 31, a second inter-board connection busbar 32, and a third inter-board connection busbar 33. The upper printed circuit board 30 also has a rotor through hole 39 corresponding to the rotor 99 of the motor 9 in its center. The control-side signal transmission and motor interface 37 is an integrated structure, including a motor interface 371 and a signal transmission interface 372. The cover plate 2 has an installation window 23 corresponding to the signal transmission and control-side motor interface 37 (see Figure 6 As shown), the control-side signal transmission and motor interface 37 is installed in the mounting window 23 on the cover plate 2, and the power interface 38 is installed in the side wall of the housing 1 (see Figure 1). Figure 5 (As shown); the power circuit board 5 includes: a lower printed circuit board 50, and a plurality of power devices 58 disposed on the lower printed circuit board 50, a first inter-board connection pin 51 corresponding to the first inter-board connection nut 31, a second inter-board connection pin 52 corresponding to the second inter-board connection nut 32, and a third inter-board connection pin 53 corresponding to the third inter-board connection nut 33. The lower printed circuit board 50 is also provided with a rotor through hole 509 corresponding to the rotor 99 of the motor 9; the specific arrangement of the motor drive circuit board is as follows: the first inter-board connection nut 31, the second inter-board connection nut 32 and the third inter-board connection nut 33 are disposed on the side opposite to the power circuit board 5 ( Figure 1 The upper printed circuit board 30 (on the upper side) has corresponding pin header vias (common technology in the field, not described further here) that correspond to the first inter-board connection pin header 51, the second inter-board connection pin header 52, and the third inter-board connection pin header 53. The first inter-board connection pin header 51, the second inter-board connection pin header 52, and the third inter-board connection pin header 53 pass through the corresponding pin header vias and are inserted one-to-one into the first inter-board connection nut 31, the second inter-board connection nut 32, and the third inter-board connection nut 33. The lower printed circuit board 50 is located on one side of the housing 1, and the area containing the peripheral circuits on the upper printed circuit board 30 is located on the other side of the housing 1. Figure 2As shown, a recessed heat dissipation platform 101 corresponding to the lower printed circuit board 50 is provided on the bottom surface 100 of the housing 1. The lower printed circuit board 50 is an aluminum substrate and rests on the heat dissipation platform 101. Two pads 13 are provided on the bottom surface 100 of the housing 1, which cooperate with the area where the peripheral circuit of the upper printed circuit board 30 is located. The end face of the pads 13 is provided with a fixing mounting hole (which is conventional technology in the art and will not be described in detail here). The lower printed circuit board 50 is provided with six mounting pad holes and electrical connection support posts 55 corresponding to the annular pads of the mounting pad holes (the mounting pad holes and their annular pads are conventional technology in the art and will not be described in detail here). The electrical connection support posts 55 are hollow structures, and an insulating sleeve 56 is provided in their inner holes. The heat dissipation platform 101 in the housing 1 has fixed mounting holes 1011 corresponding to the six mounting pad holes on the lower printed circuit board 50; the upper printed circuit board 30 has mounting through holes corresponding to the fixed mounting holes on the pad 13, and mounting pad holes corresponding to the corresponding mounting pad holes on the lower printed circuit board 50 (this is conventional technology in the art and will not be described in detail here). Screws 8 are selected and passed through the mounting pad holes on the upper printed circuit board 30, the insulating sleeves 56 in the corresponding electrical connection support pillars 55, and the corresponding mounting pad holes on the lower printed circuit board 50, and are tightened into the fixed mounting holes 1011 on the heat dissipation platform 101 of the housing 1; screws are selected and passed through the mounting through holes on the upper printed circuit board 30 and tightened into the fixed mounting holes on the pad 13.

[0043] In practical applications, instead of placing the insulating sleeve 56 in the electrical connection support column 55, an insulating particle is placed on the top of the screw 8, which then passes through the mounting pad holes on the upper printed circuit board 30, the corresponding electrical connection support column 55, and the corresponding mounting pad holes on the lower printed circuit board 50, and is tightened into the fixing mounting hole 1011 on the heat dissipation platform 101 on the bottom surface of the housing 1. The heat dissipation platform 101 in the housing 1 has an annular protrusion 15 surrounding the rotor through hole 109, forming a guide sleeve structure. The housing 1 has several heat dissipation fins 18 arranged circumferentially on the outer surface of its sidewalls. Six housing mounting ears 11 are evenly arranged circumferentially on the mounting edge of the housing 1, each with a mounting hole 111. Correspondingly, the mounting edge of the cover plate 2 has a corresponding cover plate mounting ear 21, each with a mounting hole 211. Figure 7 As shown, the motor 9 has corresponding motor housing mounting ears 91 on its respective mounting sides, and mounting holes 911 are provided in the motor housing mounting ears 91; the rotor 99 of the motor 9 passes through the rotor through hole 109 on the bottom wall of the housing 1 and is provided with a fan 98 (see Figure 8As shown in the figure, the housing 1 is also provided with a cover 19 that encloses the fan 98.

[0044] During installation, the motor-side signal transmission and motor interface 97 is directly plugged into the control-side signal transmission and motor interface 37. At this time, the motor housing mounting ear 91 is precisely aligned with the corresponding cover plate mounting ear 21 and housing mounting ear 11. Using bolts and nuts, the motor 9 and the cover plate 2 and housing 1 of the motor controller are fixed together (see...). Figure 7 (As shown).

[0045] Example 2:

[0046] like Figure 2 , Figure 3 , Figure 6 , Figures 9 to 11 As shown, the second type of assembled motor controller of this utility model, except that the peripheral and control circuit boards are of a split structure, that is: the peripheral and control circuit boards are divided into a control circuit board 3 and a peripheral circuit board 4. The control circuit board 3 includes: a first upper printed circuit board 30, and a power interface 38, a control side signal transmission and motor interface 37 disposed on the first upper printed circuit board 30, a first inter-board connection busbar 31, a second inter-board connection busbar 32, and a third inter-board connection busbar 33. The peripheral circuit board 4 includes: a second upper printed circuit board 40, and peripheral circuits including nine electrolytic capacitors 41 disposed on the second upper printed circuit board 40; the rest of the structure is the same as that of Embodiment 1, and will not be described again here.

[0047] Example 3:

[0048] like Figure 12As shown, the third type of assembled motor controller of this utility model differs from that of Embodiment 1 in that the cooling structure of the housing 1 is different. Specifically, the housing 1 has a cooling channel on the outer side of its bottom wall. The housing 1 has two first cooling connectors 141 and second cooling connectors 142, which are connected one-to-one to the two ends of the cooling channel. The cooling channel is specifically configured as follows: the bottom wall of the housing 1 has a cooling cavity 17 and an end cap 12 covering the cooling cavity 17 on its outer side. A barrier dam 170 is centrally located on the side wall of the cooling cavity 17 between the first cooling connector 141 and the second cooling connector 142. The barrier dam 170 has protrusions that open to both sides, forming a first guide dam 171 and a second guide dam 172 on both sides of the barrier dam 170. The first guide dam 171... A first guide channel 1711 is formed between the side of the first cooling connector 141 and the corresponding part of the sidewall of the cooling cavity 17. A second guide channel 172 is formed between the side of the second cooling connector 142 and the corresponding part of the sidewall of the cooling cavity 17. The protrusion has several staggered guide dams 173 (three guide dams 173 on the protrusion and two guide dams 173 on the corresponding part of the sidewall of the cooling cavity 17) on the side away from the first cooling connector 141 and the second cooling connector 142, forming a meandering channel. The two ends of the meandering channel are connected to the first guide channel 1711 and the second guide channel 1721 in a one-to-one correspondence. In this embodiment, several arc-shaped grooves 1731 are respectively provided on both sides of the guide dam 173.

[0049] In summary, the above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model. All equivalent variations and modifications made to the shape, structure, features and spirit described in the claims of the present utility model should be included within the scope of the claims of the present utility model.

Claims

1. A modular motor controller, comprising: A housing with a bottom wall and a cover plate disposed on the housing, wherein a motor drive circuit board is disposed within the housing, characterized in that the motor drive circuit board comprises: a power circuit board disposed on the bottom surface of the housing and a peripheral and control circuit board disposed above the power circuit board, the peripheral and control circuit board comprising: an upper printed circuit board, and peripheral circuits, a power interface, a motor interface, a signal transmission interface, and at least one inter-board connection header disposed on the upper printed circuit board, the peripheral circuits comprising: a plurality of electrolytic capacitors; the power circuit board comprising: a lower printed circuit board, and a plurality of power devices disposed on the lower printed circuit board, and inter-board connection pins corresponding one-to-one with the inter-board connection header; the specific arrangement of the motor drive circuit board is as follows: the lower printed circuit board is provided with at least three mounting pad holes, and rings corresponding to the mounting pad holes. The electrical connection support post on the shaped pad has a hollow structure. The bottom surface of the housing has mounting holes corresponding to the mounting pad holes. The upper printed circuit board has mounting pad holes corresponding to the corresponding mounting pad holes on the lower printed circuit board. A screw is selected, with an insulating sleeve on its top, and then sequentially passed through the mounting pad holes on the upper printed circuit board, the corresponding electrical connection support post, and the corresponding mounting pad holes on the lower printed circuit board, and tightened into the mounting holes on the bottom surface of the housing. Alternatively, an insulating sleeve is placed in the electrical connection support post, and then a screw is selected, sequentially passed through the mounting pad holes on the upper printed circuit board, the insulating sleeve in the corresponding electrical connection support post, and the corresponding mounting pad holes on the lower printed circuit board, and tightened into the mounting holes on the bottom surface of the housing. The power interface is located in the side wall of the housing, and the motor interface and signal transmission interface are located in the cover plate.

2. The modular motor controller according to claim 1, characterized in that, The bottom wall of the housing has a rotor through hole corresponding to the motor rotor, and the cover plate has a rotor through hole corresponding to the motor rotor. The motor rotor passes through the cover plate and the bottom wall of the housing in sequence and then a fan is installed.

3. The modular motor controller according to claim 1, characterized in that, The power circuit board is located on one side of the housing, and the peripheral circuit is located on the other side of the housing. At least one pad is provided on the bottom surface of the housing, which corresponds to the area of ​​the peripheral circuit on the upper printed circuit board. The end face of the pad is provided with a fixing mounting hole. The upper printed circuit board is provided with a mounting through hole corresponding to the fixing mounting hole on the pad. A screw is selected, passes through the mounting through hole on the upper printed circuit board, and is tightened into the fixing mounting hole on the pad.

4. The modular motor controller according to claim 1, characterized in that, The specific configuration of the inter-board connection header is as follows: the connection header is located on the side of the first printed circuit board opposite to the inter-board connection header. Correspondingly, the first printed circuit board has a header via corresponding to the inter-board connection header. After the inter-board connection header passes through the header via, it is inserted into the corresponding connection header.

5. A modular motor controller according to claim 1, characterized in that, The lower printed circuit board is provided with three inter-board connection headers, and correspondingly, the upper printed circuit board is provided with three inter-board connection headers.

6. The modular motor controller according to claim 1, characterized in that, The peripheral and control circuit board has a split structure, that is, the peripheral and control circuit board includes two independent circuit boards: a control circuit board and a peripheral circuit board. Correspondingly, the upper printed circuit board includes a first upper printed circuit board and a second upper printed circuit board. The first upper printed circuit board and the power circuit board are located on the same side of the housing, and the second upper printed circuit board is located on the other side of the housing. The power interface, motor interface, signal transmission interface and at least one inter-board connector are located on the first upper printed circuit board, and the peripheral circuit is located on the second upper printed circuit board.

7. A modular motor controller according to claim 1, characterized in that, The motor interface and signal transmission interface are integrated into a single structure, forming a signal transmission and motor interface. The cover plate has an installation window corresponding to the signal transmission and motor interface, and the signal transmission and motor interface passes through the installation window on the cover plate.

8. A modular motor controller according to claim 2, characterized in that, The bottom surface of the housing is provided with an annular protrusion surrounding the rotor through hole, forming a guide sleeve structure.

9. A modular motor controller according to claim 1, characterized in that, The housing has a cooling channel on the outer side of its bottom wall, and two cooling connectors are provided on the housing, which are connected to the two ends of the cooling channel respectively.

10. A modular motor controller according to claim 9, characterized in that, The specific arrangement of the cooling channel is as follows: the bottom wall of the shell has a cooling cavity and an end cap covering the cooling cavity on its outer side. A barrier dam is provided on the side wall of the cooling cavity between the two cooling joints. The barrier dam has a protrusion that opens to both sides. The protrusion forms a guide dam on both sides of the barrier dam. The two guide dams form guide grooves between the corresponding parts of the side wall of the cooling cavity and the side of the barrier dam. The protrusion has several staggered guide dams on the side away from the barrier dam and the corresponding parts of the side wall of the cooling cavity, thereby forming a meandering channel between the protrusion and the side wall of the cooling cavity. The two ends of the meandering channel are connected to the corresponding guide grooves.

11. A modular motor controller according to claim 1, characterized in that, The bottom surface of the housing is provided with a downwardly recessed heat dissipation platform corresponding to the lower printed circuit board. The lower printed circuit board is an aluminum substrate and is attached to the heat dissipation platform.

12. A modular motor controller according to any one of claims 1 to 11, characterized in that, The housing has at least three housing mounting ears evenly arranged circumferentially on its mounting edge, and each housing mounting ear has a mounting hole. Correspondingly, the cover plate has a corresponding cover plate mounting ear on its mounting edge, and each cover plate mounting ear has a mounting hole.

13. A modular motor controller according to claim 12, characterized in that, The shell has several heat dissipation fins arranged circumferentially on the outer surface of its sidewall.

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