CN217904721U - Low-cost anti-vibration compact motor controller - Google Patents
Low-cost anti-vibration compact motor controller Download PDFInfo
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- CN217904721U CN217904721U CN202221105977.6U CN202221105977U CN217904721U CN 217904721 U CN217904721 U CN 217904721U CN 202221105977 U CN202221105977 U CN 202221105977U CN 217904721 U CN217904721 U CN 217904721U
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- copper
- circuit board
- motor controller
- heat dissipation
- aluminum plate
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Abstract
A low-cost anti-vibration compact motor controller is characterized by comprising a circuit board, a motor controller and a motor controller, wherein the circuit board at least comprises copper layers on the top surface and the bottom surface; the bottom surface is tightly attached to the heat dissipation aluminum plate, and a thin layer of insulating material is arranged between the bottom surface and the heat dissipation aluminum plate; a plurality of power devices are welded on the top surface of the circuit board in a patch mode, and at least 10 through holes are formed below a bonding pad of each power device and used for connecting copper layers on the top surface and the bottom surface; a plurality of copper columns are welded on the top surface of the circuit board in a patch mode, the copper columns are connected with output phase lines and positive and negative lines, holes are formed in the lower end surfaces of the copper columns, and screws can be screwed into the holes after penetrating through the heat dissipation aluminum plate, so that the heat dissipation aluminum plate, the circuit board and the copper columns are fastened into a whole; an insulating gasket is arranged between the screw and the heat dissipation aluminum plate to separate the screw and the heat dissipation aluminum plate; the copper column bonding pad is provided with a hole in the middle.
Description
Technical Field
The present invention relates to a motor controller.
Background
In recent years, the development of electric motorcycles and electric tools is rapid, and the requirement on motor controllers is higher and higher. Meanwhile, power devices are developed day by day, new patch power devices show strong performance, and old direct-insertion power devices are challenged greatly. The present invention addresses this situation by providing a new low cost vibration resistant compact motor controller.
Disclosure of Invention
1) Solves the technical problem
With the increasing requirements on cost and performance, the direct-insertion device is used for the motor controller and cannot meet the performance requirements. The patch device is used for the motor controller, the scheme that a plurality of circuit boards are adopted is mostly adopted, the power device is attached to one circuit board, the control system is attached to the other circuit board, and the circuit boards are connected through the connectors, so that the motor controller is poor in reliability, high in cost, poor in vibration resistance and not compact enough in structure, and the scheme provides the low-cost vibration-resistant compact motor controller aiming at the problems.
2) Technical scheme
The invention provides a low-cost anti-vibration compact motor controller, which mainly adopts a Surface Mounted Device (SMD) power device to integrate a control system and a power system on a circuit board; the phase line, the positive line and the negative line are led out by adopting the copper column, and the copper column is also used as a fastener for fixing the circuit board and the heat-radiating aluminum plate, so that the structure is more compact, the cost is reduced, and meanwhile, the vibration resistance is good.
There are 6 at least via holes on the pad of welding copper post for connecting circuit board top surface and bottom surface copper layer, lead the top surface through the via hole with the electric current of bottom surface, reduce and generate heat, help to strengthening the welding strength of copper post simultaneously.
Welding power device's pad links to each other with copper sheet around, and the copper sheet area is not less than 25 square millimeters, has the via hole of connecting top layer and bottom copper sheet on the copper sheet, and 10 are no less than to quantity, further derives the heat through the copper sheet, helps power device's heat dissipation.
At least 3 slotted holes are formed in the circuit board and used for welding a negative copper bar, and the copper bar is connected with the cathodes of all power devices, so that the current-conducting capacity is enhanced.
The circuit board is welded with a sampling resistor, and the current of each phase or bus can be collected through the sampling resistor.
The control chip is welded on the circuit board, and the control system and the power system are arranged on one circuit board, so that the structure is compact, the circuit connection is reliable, the cost is low, and the vibration resistance is good.
3) Advantageous effects
The low-cost anti-vibration compact motor controller provided by the invention has the advantages of compact structure, low cost, excellent anti-contention performance and good heat dissipation.
Drawings
Fig. 1 is a schematic diagram of a circuit board, fig. 2 is an assembly diagram of the circuit board and a heat-dissipating aluminum plate, and fig. 3 is a cross-sectional diagram of the assembly diagram. In the figure, 1 is a power device, 2, 3, 4, 5 and 6 are copper column welding pads, 7, 8 and 9 are negative copper bar welding slots, 10 and 11 are sampling resistors, 12, 13, 14, 15 and 16 are copper columns, 17 are screws, 18 are insulating gaskets, and 19 is a radiating aluminum plate.
Detailed Description
A low-cost anti-vibration compact motor controller is characterized by comprising a circuit board, a motor controller and a motor controller, wherein the circuit board at least comprises copper layers on the top surface and the bottom surface; the bottom surface is tightly attached to the heat dissipation aluminum plate, and a thin layer of insulating material is arranged between the bottom surface and the heat dissipation aluminum plate; the circuit board is characterized in that a plurality of power devices (1) are welded on the top surface of the circuit board in a patch mode, at least 10 through holes are formed below a bonding pad of each power device and used for connecting copper layers on the top surface and the bottom surface, and heat can be quickly transferred to the bottom surface of the circuit board through the method and further transferred to a heat dissipation aluminum plate; a plurality of copper columns (12, 13, 14, 15 and 16) are welded on the top surface of the circuit board in a patch mode, the copper columns are connected with an output phase line and an anode and cathode line, holes are formed in the lower end faces of the copper columns, and screws (17) can be screwed into the holes after penetrating through a heat dissipation aluminum plate (20), so that the heat dissipation aluminum plate, the circuit board and the copper columns are fastened into a whole; an insulating spacer (18) is disposed between the screw and the aluminum heat sink plate to space the screw from the aluminum heat sink plate. The copper column bonding pads (2, 3, 4, 5, 6) are provided with holes in the middle.
There are 6 at least via holes on the pad (2, 3, 4, 5, 6) of welding copper post for connecting circuit board top surface and bottom surface copper layer, lead the top surface through the via hole with the electric current of bottom surface, reduce and generate heat, help to strengthening the welding strength of copper post simultaneously.
Welding power device's pad links to each other with copper sheet around, and the copper sheet area is not less than 25 square millimeters, has the via hole of connecting top layer and bottom copper sheet on the copper sheet, and 10 are no less than to quantity, further derives the heat through the copper sheet, helps power device's heat dissipation.
At least 3 slotted holes are formed in the circuit board and used for welding a negative copper bar, and the copper bar is connected with the cathodes of all power devices, so that the current-conducting capacity is enhanced.
The circuit board is welded with a sampling resistor, and the current of each phase or bus can be collected through the sampling resistor.
The control chip is welded on the circuit board, and the control system and the power system are arranged on one circuit board, so that the structure is compact, the circuit connection is reliable, the cost is low, and the vibration resistance is good.
Claims (6)
1. A low-cost anti-vibration compact motor controller is characterized by comprising a circuit board, a motor controller and a controller, wherein the circuit board at least comprises copper layers on the top surface and the bottom surface; the bottom surface is tightly attached to the heat dissipation aluminum plate, and a thin layer of insulating material is arranged between the bottom surface and the heat dissipation aluminum plate; a plurality of power devices are welded on the top surface of the circuit board in a patch mode, and at least 10 through holes are formed below a bonding pad of each power device and used for connecting copper layers on the top surface and the bottom surface; a plurality of copper columns are welded on the top surface of the circuit board in a patch mode, the copper columns are connected with output phase lines and positive and negative lines, holes are formed in the lower end surfaces of the copper columns, and screws can be screwed into the holes after penetrating through the heat dissipation aluminum plate, so that the heat dissipation aluminum plate, the circuit board and the copper columns are fastened into a whole; an insulating gasket is arranged between the screw and the heat dissipation aluminum plate to separate the screw and the heat dissipation aluminum plate; the copper column bonding pad is provided with a hole in the middle.
2. A low cost vibration resistant compact motor controller as recited in claim 1, wherein the pads of the solder copper posts have at least 6 vias for connecting the top and bottom copper layers of the circuit board.
3. A low cost vibration resistant compact motor controller according to claim 1 wherein the pads of the solder power devices are connected to the surrounding copper pads, the copper pads have an area of not less than 25 square millimeters, and the copper pads have vias connecting the top and bottom copper pads, the number of vias being not less than 10.
4. A low cost vibration resistant compact motor controller according to claim 1 wherein the circuit board has at least 3 slots for soldering the negative copper bars.
5. A low cost vibration resistant compact motor controller as recited in claim 1, wherein the circuit board has a sampling resistor soldered thereto.
6. A low cost vibration resistant compact motor controller as recited in claim 1, wherein the control chip is soldered to the circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221105977.6U CN217904721U (en) | 2022-05-10 | 2022-05-10 | Low-cost anti-vibration compact motor controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221105977.6U CN217904721U (en) | 2022-05-10 | 2022-05-10 | Low-cost anti-vibration compact motor controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217904721U true CN217904721U (en) | 2022-11-25 |
Family
ID=84110897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221105977.6U Active CN217904721U (en) | 2022-05-10 | 2022-05-10 | Low-cost anti-vibration compact motor controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217904721U (en) |
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2022
- 2022-05-10 CN CN202221105977.6U patent/CN217904721U/en active Active
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