Power-on protection device of motor controller

Abstract

The invention belongs to the technical field of motor control, and discloses a motor controller power-on protection device, which comprises a supporting table, a power supply, a microcontroller, a protection cover and a micro draft fan, the protective covers are arranged in the supporting table, and an air channel is formed in the side wall of the supporting table. A micro draft fan is arranged in the air duct; the protective cover comprises an inner container and a shell, and the inner container and the shell are hollow and communicate with the air duct through a second connecting hole; a capacitor is arranged in the inner container.

Description

Technical Field

[0001] The invention belongs to the technical field of motor control, and in particular relates to a power-on protection device for a motor controller. Background Art

[0002] At present, the existing Chinese patent with publication number CN204119110U discloses a motor controller, including a control box body, a plurality of IGBT modules and a capacitor module. A cavity is opened in the middle of the control box body, and the plurality of IGBT modules are installed on the bottom wall of the cavity. The capacitor module includes a shell, a plurality of capacitors installed in the shell, a positive conductive electrode sheet and a negative conductive electrode sheet, and the positive conductive electrode sheet and the negative conductive electrode sheet are respectively connected at both ends of each capacitor. The positive conductive electrode sheet and the negative conductive electrode sheet extend outward from the shell. The capacitor module is installed on the top surface of the plurality of IGBT modules and the capacitor module and the IGBT module are electrically connected together through a conductive mechanism. The structure is simple and compact, which reduces the length of the motor controller and realizes the miniaturization of the product. It can also effectively reduce the inductance of the input end loop of the IGBT module, and the operation is stable and reliable. However, the device also has the following defects: 1. The device cannot protect the capacitor separately. As a consumable part, the capacitor will explode when affected by high temperature and electric arc. 2. The device cannot quickly open the top cover, which is inconvenient for users to detect. Summary of the invention

[0003] The purpose of the present invention is to provide a motor controller power-on protection device to solve the problem that the conventional motor controller cannot protect the capacitor separately. As a consumable part, the capacitor will explode when affected by high temperature and electric arc, and the conventional device cannot open the top cover quickly, so it is inconvenient for the user to detect.

[0004] Technical Solution

[0005] A motor controller power-on protection device, comprising: a support platform, a power supply, a microcontroller, a protection cover, and a micro exhaust fan;

[0006] A plurality of protective covers are arranged in the support platform, and a wind duct is arranged on the side wall of the support platform; a micro exhaust fan is arranged in the wind duct;

[0007] The protective cover comprises an inner shell and an outer shell, wherein the inner shell and the outer shell are hollow and connected to the air duct through a second connecting hole;

[0008] The capacitor is arranged inside the inner tank. When the exhaust fan 22 is turned on, the air flow between the inner tank 6 and the outer shell 7 can be driven to accelerate the removal of the heat on the surface of the inner tank 6, thereby achieving the cooling of the capacitor.

[0009] Furthermore, the support platform is a rectangular frame structure composed of a bottom plate and door-shaped side plates, and a plurality of slots are provided near the side plates on the bottom plate of the support platform;

[0010] A first sliding groove is provided on the side plate of the support platform near the clamping groove.

[0011] Furthermore, contact blocks are evenly distributed on the inner surface of the inner liner, a capacitor is sleeved inside the inner liner, and the capacitor is connected to the support platform;

[0012] A connecting ring protruding outward is provided at the top of the inner container along the radial direction, and a clamping block is fixed at the top of the connecting ring, and the clamping block matches the clamping slot;

[0013] A first connecting hole is axially formed at the top of the block, and the first connecting hole penetrates the connecting ring. The hollow area between the inner liner and the outer shell is connected through the first connecting hole, and the first connecting hole serves as an air inlet.

[0014] Furthermore, the outer shell is a cylinder, a placement groove is provided on the top of the outer shell, a first slider is provided on the side wall of the outer shell, the first slider is provided with a second connection hole, the second connection hole penetrates into the placement groove, and the liner is placed in the placement groove;

[0015] The first sliding block is matched with the first sliding groove. The second connecting hole connects the hollow area between the inner container and the outer shell, and the second connecting hole serves as an air outlet.

[0016] Furthermore, a connecting pipe is provided on the side plate of the support platform, one end of the connecting pipe passes through the first slide slot and is connected to the second connecting hole, and the other end is connected to the connecting pipe, which is connected to the support pipe after converging, and a micro exhaust fan is provided in the support pipe. The micro exhaust fan drives the air flow in the central control area between the inner tank and the outer shell.

[0017] Furthermore, the inner tank is made of metal material for transferring heat. The inner tank 6 made of metal material can achieve the effect of transferring heat well, and the explosion of the capacitor 9 will not cause damage to other electrical components.

[0018] Furthermore, the housing is made of bulk molding compound for insulation. The housing 7 made of bulk molding compound can achieve the function of insulation, and the bulk molding compound has strong arc resistance and is not easily broken down by arc, so it can achieve the effect of protecting the capacitor.

[0019] Furthermore, an output interface and an input interface are provided on the outer side wall of the support platform side plate.

[0020] Furthermore, the top ends of the two parallel side plates of the support platform are provided with second sliding grooves, the top end of the support platform is provided with a top cover, the top cover is L-shaped, and the bottom end of the long side of the top cover is provided with a second sliding block movably connected to the second sliding groove;

[0021] The front ends of the two side plates of the support platform are provided with clamping columns, which are made of magnetic materials, and the short sides of the top cover are provided with clamping holes that cooperate with the clamping columns. When it is necessary to check the inside of the support platform 1, the top cover 24 is slid along the direction of the second sliding groove 23 so that the clamping column 26 is separated from the clamping hole 27, and the top cover 24 can be opened to check the inside of the support platform 1. The second slider 25 slides inside the second sliding groove 23 to fix the movement direction of the top cover 24. When the top cover 24 is slid closed, the clamping hole 27 and the clamping column 26 are adsorbed to fix the top cover 24 so that it is not easy to slide.

[0022] Furthermore, the top of the top cover is provided with evenly distributed heat sinks, and the surface of the heat sinks is provided with heat dissipation holes penetrating therethrough; the heat sinks are made of metal material. The heat sinks 28 can enhance the heat dissipation inside the support platform 1, and the heat dissipation holes 29 provided can enhance the heat dissipation performance of the heat sink 28.

[0023] Beneficial effects:

[0024] The present invention provides a motor controller power-on protection device, which can achieve the effect of independent heat dissipation for a capacitor, and the heat dissipation will not bring air dust into the device, and the explosion of the capacitor will not cause damage to other electrical components, and the shell made of bulk molding material can achieve the effect of insulation, the bulk molding material has strong arc resistance and is not easily punctured by the arc, so the capacitor can be protected, and the top cover can be quickly opened for users to conduct inspections. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention includes 5 drawings, and the drawings and the descriptions of the drawings are as follows:

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the overall structure of the present invention after the protective cover is removed;

[0028] Figure 3 It is a schematic diagram of the protective cover structure of the present invention;

[0029] Figure 4 It is a schematic diagram of the protective cover split structure of the present invention;

[0030] Figure 5 It is a schematic diagram of the planar structure of the support tube of the present invention;

[0031] In the figure: 1. support platform; 2. power supply; 3. microcontroller; 4. protective cover; 5. card slot; 6. liner; 7. outer shell; 8. contact block; 9. capacitor; 10. connecting ring; 11. card block; 12. output interface; 13. input interface; 14. first connecting hole; 15. placement slot; 16. first slider; 17. second connecting hole; 18. first slide slot; 19. connecting pipe; 20. connecting pipe; 21. supporting pipe; 22. exhaust fan; 23. second slide slot; 24. top cover; 25. second slider; 26. card column; 27. card hole; 28. heat sink; 29. ​​heat dissipation hole. DETAILED DESCRIPTION

[0032] The present invention provides a motor controller power-on protection device, comprising a support platform, a power supply and a microcontroller, wherein a protective cover is arranged inside the support platform, a card slot is arranged through the inner bottom end of the support platform, the protective cover comprises an inner shell and an outer shell, the inner surface of the inner shell is provided with evenly distributed contact blocks, a capacitor is sleeved inside the inner shell, and the capacitor is connected to the support platform, a connecting ring is arranged at the top of the inner shell, a card block is fixedly arranged at the top of the connecting ring, the card block matches the card slot, a first connecting hole is opened at the top of the card block, and the first connecting hole passes through the connecting ring, a placement slot is opened at the top of the outer shell, a first slider is arranged on one side of the outer shell, a second connecting hole is arranged on one side of the first slider, and the second connecting hole passes through the placement slot, a first slide slot is opened on one side of the inner shell, and the first slide slot is movably connected to the first slider, a connecting pipe is arranged on one side of the support platform, one end of the connecting pipe passes through the support platform and the first slide slot and is connected to the second connecting hole, the other end of the connecting pipe is connected to a connecting pipe, one end of the connecting pipe is provided with a supporting pipe, and an exhaust fan is arranged inside the supporting pipe.

[0033] As a preferred technical solution of a motor controller power-on protection device of the present invention, second sliding grooves are opened on both sides of the top of the support platform, a top cover is provided at the top of the support platform, a second slider is provided at the bottom end of the top cover, the second slider is movably connected to the second sliding groove, a clamping column is provided on one side of the support platform, the clamping column is made of magnetic material, and a clamping hole matching the clamping column is opened on one side of the top cover.

[0034] As a preferred technical solution of a motor controller power-on protection device of the present invention, the top cover of the top cover is provided with evenly distributed heat sinks, and heat dissipation holes are opened through the surface of the heat sinks.

[0035] As a preferred technical solution of a motor controller power-on protection device of the present invention, the space between the inner shell and the outer shell is hollow.

[0036] As a preferred technical solution of a motor controller power-on protection device of the present invention, the inner shell is made of metal material, and the outer shell is made of bulk molding compound.

[0037] As a preferred technical solution of the motor controller power-on protection device of the present invention, the heat sink is made of metal material.

[0038] As a preferred technical solution of the motor controller power-on protection device of the present invention, the exhaust fan is connected to a power supply.

[0039] As a preferred technical solution of a motor controller power-on protection device of the present invention, an output interface and an input interface are provided at one end of the support platform.

[0040] Embodiment 1:

[0041] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the present invention discloses a motor controller power-on protection device, including a support platform 1, a power supply 2 and a microcontroller 3. A protective cover 4 is arranged inside the support platform 1, and a card slot 5 is arranged through the inner bottom end of the support platform 1. The protective cover 4 includes an inner liner 6 and an outer shell 7. The inner surface of the inner liner 6 is provided with uniformly distributed contact blocks 8. A capacitor 9 is sleeved inside the inner liner 6, and the capacitor 9 is connected to the support platform 1. A connecting ring 10 is arranged at the top of the inner liner 6. A card block 11 is fixedly arranged at the top of the connecting ring 10. The card block 11 matches the card slot 5. A first connecting hole 14 is opened at the top of the card block 11, and the first connecting hole 14 passes through the connecting ring 10. 10. A placement groove 15 is provided at the top of the shell 7, a first slider 16 is provided on one side of the shell 7, a second connecting hole 17 is provided on one side of the first slider 16, and the second connecting hole 17 penetrates into the placement groove 15. A first slide groove 18 is provided on one side of the inner part of the support platform 1, and the first slide groove 18 is movably connected with the first slider 16. A connecting pipe 19 is provided on one side of the support platform 1, one end of the connecting pipe 19 penetrates the support platform 1 and the first slide groove 18 and is connected with the second connecting hole 17, and the other end of the connecting pipe 19 is connected with a connecting pipe 20, and a support pipe 21 is provided at one end of the connecting pipe 20, and a micro exhaust fan 22 is provided inside the support pipe 21.

[0042] Furthermore, the space between the inner liner 6 and the outer shell 7 is hollow, and the heat generated by the capacitor is transferred to the surface of the inner liner 6. The air flowing between the inner liner 6 and the outer shell 7 will take away the heat on the surface of the inner liner 6, thereby cooling the capacitor.

[0043] The inner liner 6 is made of metal material, and the outer shell 7 is made of bulk molding compound. The inner liner 6 made of metal material can achieve the effect of transferring heat well, and the explosion of the capacitor 9 will not cause damage to other electrical components. The outer shell 7 made of bulk molding compound can achieve the effect of insulation, and the bulk molding compound has strong arc resistance and is not easily punctured by arc, so it can achieve the effect of protecting the capacitor.

[0044] The exhaust fan 22 is electrically connected to the power supply 2. When the exhaust fan 22 is turned on, it can drive the air flow between the inner tank 6 and the outer shell 7, and accelerate the removal of heat from the surface of the inner tank 6, thereby achieving the purpose of cooling the capacitor.

[0045] An output interface 12 and an input interface 13 are disposed at one end of the support platform 1 .

[0046] Specifically, the opening direction of the protective cover is downward, and the first slider 16 is slid along the direction of the first slide groove 18, and the block 11 is installed inside the slot 5. The block is engaged with the slot 15. At this time, the inner tank 6 will be completely covered on the surface of the capacitor 9, and the exhaust fan 22 is connected to the power supply 2. The fan 22 is turned on, so that the first connecting hole 14 draws air to the bottom end of the support platform 1, and the gas flows between the tank 6 and the outer shell 7 to drive the capacitor 9 to transfer heat to the surface of the inner tank 6. The heat is transferred to the inside of the connecting tube 19 through the second connecting hole 17, and continues to be transferred to the support tube 21 through the connecting tube 20, and finally discharged, so as to achieve the effect of heat dissipation of the capacitor 9 alone. The outer shell 7 made of bulk molding compound can achieve the effect of insulation, and the bulk molding compound has strong arc resistance and is not easily punctured by arc, so as to achieve the effect of protecting the capacitor 9.

[0047] Embodiment 2:

[0048] like Figure 1 , Figure 2 As shown, the present invention discloses a motor controller power-on protection device, wherein second sliding grooves 23 are provided on both sides of the top of the support platform 1, a top cover 24 is provided on the top of the support platform 1, a second slider 25 is provided at the bottom of the top cover 24, and the second slider 25 is movably connected with the second sliding groove 23, a clamping column 26 is provided on one side of the support platform 1, and the clamping column 26 is made of magnetic material, and a clamping hole 27 matching the clamping column 26 is provided on one side of the top cover 24

[0049] Furthermore, evenly distributed heat sinks 28 are provided on the top of the top cover 24 , and heat dissipation holes 29 are opened through the surface of the heat sink 28 . The heat sink 28 can enhance the heat dissipation inside the support platform 1 , and the heat dissipation holes 29 can enhance the heat dissipation performance of the heat sink 28 .

[0050] The heat sink 28 is made of metal material, and the heat sink 28 made of metal material can achieve the effect of transferring heat well.

[0051] Specifically, when it is necessary to check the interior of the support platform 1, the top cover 24 is slid along the direction of the second sliding groove 23 so that the clamping column 26 is disengaged from the clamping hole 27, and the top cover 24 can be opened to check the internal situation of the support platform 1. The second slider 25 slides inside the second sliding groove 23 to fix the movement direction of the top cover 24. When the top cover 24 is slid closed, the clamping hole 27 and the clamping column 26 are adsorbed to fix the top cover 24 so that it is not easy to slide. The heat sink 28 made of metal material can well achieve the effect of transferring heat. The heat sink 28 can enhance the heat dissipation inside the support platform 1, and the heat dissipation holes 29 provided can enhance the heat dissipation performance of the heat sink 28.

Claims

1. A motor controller power-on protection device, characterized in that: The device comprises: a support platform, a power supply, a microcontroller, a protective cover, and a micro exhaust fan; A plurality of protective covers are arranged in the support platform, and a wind duct is arranged on the side wall of the support platform; a micro exhaust fan is arranged in the wind duct; The protective cover comprises an inner shell and an outer shell, wherein the inner shell and the outer shell are hollow and connected to the air duct through a second connecting hole; A capacitor is arranged inside the inner tank.

2. The device according to claim 1, characterized in that: The support platform is a rectangular frame structure consisting of a bottom plate and door-shaped side plates, and a plurality of slots are provided near the side plates on the bottom plate of the support platform; A first sliding groove is provided on the side plate of the support platform near the clamping groove.

3. The device according to claim 2, characterized in that: The inner surface of the inner tank is evenly distributed with contact blocks, the inner tank is sleeved with a capacitor, and the capacitor is connected to the support platform; A connecting ring protruding outward is provided at the top of the inner container along the radial direction, and a clamping block is fixed at the top of the connecting ring, and the clamping block matches the clamping slot; A first connecting hole is axially formed at the top of the clamping block, and the first connecting hole penetrates the connecting ring.

4. The device according to claim 3, characterized in that: The outer shell is a cylinder, a placement groove is opened at the top of the outer shell, a first slider is provided on the side wall of the outer shell, the first slider is provided with a second connecting hole, the second connecting hole penetrates into the placement groove, and the liner is placed in the placement groove; The first sliding block cooperates with the first sliding groove.

5. The device according to claim 4, characterized in that: The side plate of the support platform is provided with a connecting pipe, one end of the connecting pipe passes through the first slide groove and is connected to the second connecting hole, and the other end is connected to the connecting pipe. After the connecting pipe converges, it is connected to the supporting pipe, and a micro exhaust fan is arranged in the supporting pipe.

6. The device according to claim 5, characterized in that: The inner tank is made of metal material and is used to transfer heat.

7. The device according to claim 6, characterized in that: The housing is made of bulk molding compound for insulation.

8. The device according to claim 7, characterized in that: An output interface and an input interface are arranged on the outer side wall of the support platform side plate.

9. The device according to claim 8, characterized in that: The top ends of the two parallel side plates of the support platform are provided with second sliding grooves, and the top end of the support platform is provided with a top cover, which is L-shaped, and the bottom end of the long side of the top cover is provided with a second sliding block movably connected with the second sliding groove; The front ends of the two side plates of the support platform are provided with clamping columns, which are made of magnetic materials, and the short sides of the top cover are provided with clamping holes that match the clamping columns.

10. The device according to claim 9, characterized in that: The top of the top cover is provided with evenly distributed heat sinks, and the surface of the heat sinks is provided with penetrating heat dissipation holes; The heat sink is made of metal material.

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