Plug-in motor controller

Abstract

The utility model discloses a plug-in motor controller, include: by bottom cover and set up on the shell of bottom cover constitute the shell, be provided with the motor drive circuit board including power circuit board, control circuit board and peripheral circuit board in the shell of being located power circuit board top, control circuit board leans to one side of the shell, peripheral circuit board leans to the other side of the shell, be provided with power connection, motor interface, signal transmission interface and at least one board interconnect connection female head in control circuit board, be provided with several electrolytic capacitors in peripheral circuit board, be provided with several power devices and with board interconnect connection female head one to one corresponding board interconnect connection male head in power circuit board, power connection, motor interface and signal transmission interface wear and set in the shell, the motor controller of the utility model, and its motor interface can be directly plugged on the motor, and the structure is very compact, and greatly facilitates the installation, and saves the cost.

Description

Technical Field

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

[0002] Currently, motor controllers used in electric vehicles, although they separate the motor drive circuit board into two separate circuit boards, the control board and the power board, are still relatively large and require a lot of installation space. As a result, motor controllers usually have to be placed separately from the motor in different locations, which 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 plug-in motor controller that can be further reduced in size and whose motor interface can be directly plugged into the motor.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a plug-in motor controller, comprising: a housing, the housing including: a bottom cover and a casing disposed on the bottom cover, a motor drive circuit board disposed in the housing, the motor drive circuit board including: a power circuit board disposed on the bottom surface of the casing, and a control circuit board and a peripheral circuit board disposed above the power circuit board, the control circuit board including: a first printed circuit board, and a power interface, a motor interface, a signal transmission interface and at least one inter-board connector disposed on the first printed circuit board; the peripheral circuit board including: a second The system comprises a printed circuit board and several electrolytic capacitors disposed on a second printed circuit board; the power circuit board includes a third printed circuit board and several power devices disposed on the third printed circuit board, and inter-board connection pins corresponding one-to-one with the inter-board connection pin headers; the motor drive circuit board is specifically configured such that the control circuit board is positioned towards one side of the housing, the peripheral circuit board is positioned towards the other side of the housing, at least one positioning post is provided on the corresponding side of the bottom surface of the housing to cooperate with the peripheral circuit board, and the third printed circuit board is provided with at least two peripheral electrical connection pad holes and at least four control electrical connection pad holes. The system includes peripheral electrical connection support posts corresponding to the annular pads on the peripheral electrical connection pad holes and control electrical connection support posts corresponding to the annular pads on the control electrical connection pad holes. Both the peripheral and control electrical connection support posts have through-holes. The bottom surface of the housing has mounting holes corresponding to the peripheral and control electrical connection pad holes. The second printed circuit board has positioning holes corresponding to the positioning posts and mounting pad holes corresponding to the peripheral electrical connection pad holes on the third printed circuit board. The first printed circuit board has corresponding control electrical connection holes on the third printed circuit board. The mounting pad holes corresponding to the disc holes are selected by screws fitted with insulating sleeves, passing through the mounting pad holes on the first printed circuit board, the corresponding control electrical connection support posts, and the corresponding control electrical connection pad holes on the third printed circuit board, and tightening them into the fixing mounting holes on the bottom surface of the housing. The positioning holes on the second printed circuit board are fitted onto the corresponding positioning posts, and screws fitted with insulating sleeves are selected by screws fitted with insulating sleeves, passing through the mounting pad holes on the second printed circuit board, the corresponding peripheral electrical connection support posts, and the corresponding peripheral electrical connection pad holes on the third printed circuit board, and tightening them into the fixing mounting holes on the bottom surface of the housing. The power interface, motor interface, and signal transmission interface are installed inside the housing.

[0005] As a preferred embodiment, in the aforementioned plug-in motor controller, the third printed circuit board is an aluminum substrate that is attached to the bottom surface of the housing.

[0006] As a preferred embodiment, in the aforementioned plug-in motor controller, the third printed circuit board is provided with three inter-board connection headers, and correspondingly, the first printed circuit board is provided with three inter-board connection headers.

[0007] As a preferred embodiment, in the aforementioned plug-in motor controller, the bottom cover is provided with a first mounting window corresponding to the motor interface and a second mounting window corresponding to the signal transmission interface, with the motor interface and the signal transmission interface respectively disposed in the first and second mounting windows on the bottom cover; the housing is provided with a third mounting window corresponding to the power interface, with the power interface disposed in the third mounting window of the housing.

[0008] As a preferred embodiment, in the aforementioned plug-in motor controller, a removable cover plate is provided above the third mounting window on the housing. The cover plate and the housing are provided with at least two snap-fit ​​slots on their respective sides for passing power cables. A sealing ring with wire holes corresponding one-to-one with the snap-fit ​​slots is provided between the cover plate and the housing.

[0009] As a preferred embodiment, in the plug-in motor controller, the control circuit board further includes a functional interface disposed on the first printed circuit board, and a fourth mounting window corresponding to the functional interface is provided on the housing.

[0010] As a preferred embodiment, in the aforementioned plug-in motor controller, the bottom cover has two through holes for potting glue, one serving as an vent hole and the other as a potting glue hole, and a fixing plug is provided in the potting glue through hole.

[0011] As a preferred embodiment, in the aforementioned plug-in motor controller, one of the two through holes for potting is located near one end of the bottom cover, and the other is located near the other end of the bottom cover.

[0012] As a preferred embodiment, in the aforementioned plug-in motor controller, the housing has at least one support post for supporting the first printed circuit board on the outer side of the third mounting window. The end face of the support post has a fixing mounting hole, and the first printed circuit board has a mounting through hole corresponding to the fixing mounting hole on the end face of the support post. A screw is selected, passes through the mounting through hole on the first printed circuit board, and is tightened into the fixing mounting hole on the corresponding support post.

[0013] As a preferred embodiment, in the aforementioned plug-in motor controller, the bottom cover is provided with at least two downwardly protruding mounting ears, and the mounting ears are provided with mounting through holes.

[0014] As a preferred embodiment, in the aforementioned plug-in motor controller, both the housing and the bottom cover are provided with a number of heat dissipation fins.

[0015] The beneficial effects of this utility model are:

[0016] 1. This utility model greatly reduces the area by dividing the motor drive circuit board into three independent circuit boards: a power circuit board, a control circuit board located above the power circuit board, and a peripheral circuit board. The electrical connection support column not only supports the three independent circuit boards into a three-dimensional structure, but also plays the role of electrical connection, which can be described as killing two birds with one stone. This makes the motor drive circuit board very compact, no longer requiring a large installation space, and can be directly installed on the motor housing.

[0017] 2. This utility model greatly improves the heat dissipation effect by setting a heat dissipation platform on the bottom surface of the housing and using an aluminum-based plate as the third printed circuit board, which is attached to the heat dissipation platform.

[0018] 3. This utility model provides a removable cover plate on the third mounting window of the housing, which can cover the power interface without obstructing wiring; and at the same time avoids safety and corrosion problems caused by exposed power connectors.

[0019] 4. This utility model provides an exhaust hole and a glue-filling hole on the bottom cover, allowing glue to be poured into the outer shell through the exhaust hole and glue-filling hole. Then, the exhaust hole and glue-filling hole are blocked with a fixing plug, forming a sealed body in the inner cavity of the outer shell, isolating it from the outside world, and further improving the heat dissipation effect.

[0020] 5. This utility model improves the venting effect during glue filling by placing the vent hole near one end of the bottom cover and the glue filling hole near the other end of the bottom cover, thereby venting the gas in the shell as much as possible.

[0021] 6. This utility model expands the heat dissipation area and improves the heat dissipation effect by simultaneously providing heat dissipation fins on the shell and the bottom cover. Attached Figure Description

[0022] Figures 1 to 4 This is an exploded structural diagram of the motor controller described in this utility model from multiple perspectives.

[0023] Figure 5 and Figure 6 This is a three-dimensional structural diagram of the motor controller described in this utility model from two perspectives.

[0024] Figure 7 This is a schematic diagram of the motor controller of this utility model in use.

[0025] Figures 1 to 7The reference numerals in the attached diagrams are as follows: 1. Bottom cover; 11. Mounting ear; 12. Heat sink fins; 13. Through hole for potting; 14. Through hole for potting; 15. Fixing plug; 2. Screw; 25. Insulating sleeve; 3. Control circuit board; 30. First printed circuit board; 35. Inter-board connection header; 36. Signal transmission interface; 37. Motor interface; 38. Power interface; 39. Function interface; 4. Peripheral circuit board; 40. Second printed circuit board; 41. Electrolytic capacitor; 44. Positioning hole; 5. 50. Power circuit board, 53. Third printed circuit board, 54. Control electrical connection support column, 55. Peripheral electrical connection support column, 56. Inter-board connection pin header, 57. Power device, 78. Sealing ring, 79. Cover plate, 80. Terminal block, 81. Housing, 82. Bottom surface, 83. Fixing mounting hole, 84. Heat sink fins, 85. Support column, 86. Positioning column, 87. Third mounting window, 88. Fourth mounting window, 99. Motor, 90. Signal transmission interface, 91. Motor interface. Detailed Implementation

[0026] The following describes in detail, with reference to the accompanying drawings, a specific implementation scheme of the plug-in motor controller of this utility model.

[0027] like Figures 1 to 6As shown, the plug-in motor controller of this utility model includes: a housing consisting of a bottom cover 1 and a shell 8 disposed on the bottom cover 1; a motor drive circuit board disposed in the shell 8; the motor drive circuit board includes: a power circuit board 5 disposed on the bottom surface 81 of the shell 8; a control circuit board 3 and a peripheral circuit board 4 disposed above the power circuit board 5; the control circuit board 3 includes: a first printed circuit board 30; and a signal transmission interface 36, a motor interface 37, a power interface 38, a function interface 39, and three inter-board connection headers 35 disposed on the first printed circuit board 30; the peripheral circuit board 4 includes: a second printed circuit board 40; and a... The power circuit board 5 includes a third printed circuit board 50 and a number of power devices 58 disposed on the third printed circuit board 50, and three inter-board connection pins 55 corresponding one-to-one with the inter-board connection pins 35; the specific arrangement of the motor drive circuit board is as follows: the control circuit board 3 is close to one side of the housing 8, the peripheral circuit board 4 is close to the other side of the housing 8, and two positioning posts 84 that cooperate with the peripheral circuit board 4 are provided on the corresponding side of the bottom surface 81 of the housing 8; the third printed circuit board 50 is provided with two peripheral electrical connection pad holes, four control electrical connection pad holes, and two peripheral electrical connection pads that are correspondingly disposed on the annular pads of the peripheral electrical connection pad holes. The outer electrical connection support column 54 and four control electrical connection support columns 53 are respectively set on the annular pads of the control electrical connection pad holes. Both the outer electrical connection support column 54 and the control electrical connection support column 53 are hollow structures, that is, they are all provided with through holes. The bottom surface 81 of the housing 8 is provided with fixing mounting holes 811 corresponding to the outer electrical connection pad holes and the control electrical connection pad holes. The second printed circuit board 40 is provided with positioning holes 44 corresponding to the positioning column 84 and mounting pad holes corresponding to the outer electrical connection pad holes on the third printed circuit board 40 (which are conventional techniques in this field and will not be described in detail here). The first printed circuit board 30 is provided with corresponding control electrical connection pad holes on the third printed circuit board 50. The corresponding mounting pad holes (which are conventional techniques in this field and will not be described in detail here) are selected. After the insulating sleeve 25 is fitted, the screw 2 passes through the mounting pad holes on the first printed circuit board 30, the corresponding control electrical connection support post 53 and the corresponding control electrical connection pad holes on the third printed circuit board 50, and is tightened into the corresponding fixing mounting holes 811 on the bottom surface 81 of the housing 8. The positioning holes 44 on the second printed circuit board 40 are fitted onto the corresponding positioning posts 84. After the insulating sleeve 25 is fitted, the screw 2 passes through the mounting pad holes on the second printed circuit board 40, the corresponding peripheral electrical connection support post 54 and the corresponding peripheral electrical connection pad holes on the third printed circuit board 50, and is tightened into the corresponding fixing mounting holes 811 on the bottom surface 80 of the housing 8.The bottom cover 1 has a first mounting window corresponding to the motor interface 37 and a second mounting window corresponding to the signal transmission interface 36. The housing 8 has a third mounting window 88 corresponding to the power interface 38 and a fourth mounting window 89 corresponding to the functional interface 39. Above the third mounting window 88, the housing 8 has a removable cover plate 78. The cover plate 78 and the housing 8 have two snap-fit ​​slots on their respective sides for threading power cables. A connecting strip is provided between the cover plate 78 and the housing 8. A sealing ring 77 with two wire holes (a common technique in the art, not described further here); the bottom cover 1 has two through holes 13 and 14 for potting, one through hole 13 near one end of the bottom cover 1 and the other through hole 14 near the other end of the bottom cover 1. When the through hole 13 is used as a vent, the through hole 14 is used as a potting hole, or vice versa; the bottom cover 1 has two downwardly protruding mounting ears 11, and each mounting ear 11 has a mounting through hole 111.

[0028] In practical applications, the third printed circuit board 50 is an aluminum substrate that is attached to the bottom surface 81 of the housing 8. The housing 8 is provided with a plurality of heat dissipation fins 82, and the bottom cover 1 is provided with a plurality of heat dissipation fins 12. The housing 8 is provided with two support columns 83 for supporting the first printed circuit board 30 on the outside of the third mounting window 88. The end face of the support column 83 is provided with a fixing mounting hole. The first printed circuit board 30 is provided with a mounting through hole corresponding to the fixing mounting hole on the end face of the support column 83. Screws are selected, pass through the mounting through hole of the first printed circuit board 30, and tightened into the fixing mounting hole on the corresponding support column 83.

[0029] After assembly, glue is injected into the housing 8 through two glue-filling through holes 13 and 14. After the glue is filled, the glue-filling through holes 13 and 14 are blocked with a fixing plug 15.

[0030] In actual use, such as Figure 7 As shown, the motor interface 97 on the motor 9 is inserted into the motor interface 37 in the control circuit board 3, and the signal transmission interface 96 on the motor 9 is inserted into the signal transmission interface 36 in the control circuit board 3; then, the plug-in motor controller is fixed to the motor 9 through the four mounting ears 11; when the power cord is connected to the power interface 38, the cover plate 78 can be opened, and the wiring terminal 79 on the power cord can be connected to the corresponding wiring terminal of the power interface 38 through the through hole on the sealing ring 77.

[0031] 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 changes 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 plug-in motor controller, comprising: The housing comprises: a bottom cover and a housing disposed on the bottom cover, wherein a motor drive circuit board is disposed within the housing. The motor drive circuit board comprises: a power circuit board disposed on the bottom surface of the housing, and a control circuit board and a peripheral circuit board disposed offset above the power circuit board. The control circuit board comprises: a first printed circuit board, and a power interface, a motor interface, a signal transmission interface, and at least one inter-board connector on the first printed circuit board. The peripheral circuit board comprises: a second printed circuit board, and a plurality of electrolytic capacitors disposed on the second printed circuit board. The power circuit board comprises: a third printed circuit board, and a plurality of power devices disposed on the third printed circuit board, and inter-board connector pins corresponding one-to-one with the inter-board connector pins. The motor drive circuit board is specifically configured such that: the control circuit board is positioned towards one side of the housing, and the peripheral circuit board is positioned towards the other side of the housing; at least one positioning post is disposed on the corresponding side of the bottom surface of the housing to cooperate with the peripheral circuit board; the third printed circuit board has at least two peripheral electrical connection pads, at least four control electrical connection pads, and corresponding peripheral electrical connection pads. The outer electrical connection support pillars on the annular pads and the control electrical connection support pillars corresponding to the annular pad holes on the control electrical connection pads are provided. Both the outer electrical connection support pillars and the control electrical connection support pillars have through-holes. The bottom surface of the housing has mounting holes corresponding to the outer electrical connection pad holes and the control electrical connection pad holes. The second printed circuit board has positioning holes corresponding to the positioning pillars and mounting pad holes corresponding to the outer electrical connection pad holes on the third printed circuit board. The first printed circuit board has mounting holes corresponding to the corresponding control electrical connection pad holes on the third printed circuit board. The mounting pad holes are fitted with insulating sleeves, and screws are passed through the mounting pad holes on the first printed circuit board, the corresponding control electrical connection support posts, and the corresponding control electrical connection pad holes on the third printed circuit board, and tightened into the fixing mounting holes on the bottom surface of the housing. The positioning holes on the second printed circuit board are fitted onto the corresponding positioning posts, and screws are fitted with insulating sleeves, and screws are passed through the mounting pad holes on the second printed circuit board, the corresponding peripheral electrical connection support posts, and the corresponding peripheral electrical connection pad holes on the third printed circuit board, and tightened into the fixing mounting holes on the bottom surface of the housing. The power interface, motor interface, and signal transmission interface are installed inside the housing.

2. A plug-in motor controller according to claim 1, characterized in that, The third printed circuit board is an aluminum substrate and is attached to the bottom surface of the housing.

3. A plug-in motor controller according to claim 1, characterized in that, The third printed circuit board is provided with three inter-board connection headers, and correspondingly, the first printed circuit board is provided with three inter-board connection headers.

4. A plug-in motor controller according to claim 1, characterized in that, The bottom cover has a first mounting window corresponding to the motor interface and a second mounting window corresponding to the signal transmission interface. The motor interface and the signal transmission interface are respectively set in the first and second mounting windows on the bottom cover. The housing has a third mounting window corresponding to the power interface. The power interface is set in the third mounting window of the housing.

5. A plug-in motor controller according to claim 4, characterized in that, The housing is provided with a detachable cover plate above the third mounting window. The cover plate and the housing are provided with at least two snap-fit ​​slots for passing power cables through on the corresponding sides. A sealing ring with a wire-passing hole corresponding to the snap-fit ​​slot is provided between the cover plate and the housing.

6. A plug-in motor controller according to claim 4, characterized in that, The control circuit board further includes a functional interface on the first printed circuit board, and a fourth mounting window corresponding to the functional interface is provided on the housing.

7. A plug-in motor controller according to claim 1, characterized in that, The bottom cover has two through holes for dispensing glue, one as an air vent and the other as a glue dispensing hole, and a fixing plug is provided in the dispensing through hole.

8. A plug-in motor controller according to claim 7, characterized in that, Of the two through holes for dispensing glue, one is located near one end of the bottom cover, and the other is located near the other end of the bottom cover.

9. A plug-in motor controller according to claim 4, characterized in that, The housing has at least one support column for supporting the first printed circuit board on the outside of the third mounting window. The end face of the support column is provided with a fixing mounting hole. The first printed circuit board is provided with a mounting through hole corresponding to the fixing mounting hole on the end face of the support column. A screw is selected, passes through the mounting through hole on the first printed circuit board, and is tightened into the fixing mounting hole on the corresponding support column.

10. A plug-in motor controller according to claim 1, characterized in that, The bottom cover is provided with at least two downward protruding mounting ears, and the mounting ears are provided with mounting through holes.

11. A plug-in motor controller according to any one of claims 1 to 10, characterized in that, Both the housing and the bottom cover are provided with several heat dissipation fins.

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