CN217088477U

CN217088477U - Motor controller

Info

Publication number: CN217088477U
Application number: CN202220473285.0U
Authority: CN
Inventors: 曹柏锋; 杨迪斯
Original assignee: Hangzhou Shiteng Technology Co ltd
Current assignee: Hangzhou Shiteng Technology Co ltd
Priority date: 2022-03-07
Filing date: 2022-03-07
Publication date: 2022-07-29
Anticipated expiration: 2032-03-07

Abstract

The application discloses a motor controller, which comprises a shell, wherein a connecting plate is arranged in the shell; the radiator is connected with the shell and is positioned on one side of the connecting plate of the shell; the radiator is characterized in that a through hole is formed in the connecting plate, a threaded hole corresponding to the radiator is formed in the radiator, and a bolt penetrates through the through hole from the other side of the connecting plate to be connected with the threaded hole. The connecting plate is also provided with an opening for penetrating the capacitor, so that at least part of the capacitor is positioned in an open area at one side of the radiator to obtain better heat dissipation capacity. And the opening is provided with a sealing structure, so that dust, water vapor and the like are prevented from entering from the gap. The design of the motor controller reduces gaps among the radiator, the capacitor and the shell, so that the motor controller can obtain better sealing performance, water and dust are prevented from entering, and the reliability of the motor controller is improved.

Description

Motor controller

Technical Field

The utility model relates to the technical field of motors, more specifically relates to a motor controller.

Background

An existing motor is generally required to be controlled and driven by a motor controller, the motor controller generally adopts a frequency conversion mode to drive the motor to run, a power module in the motor controller generally has high heat productivity, and a stretched aluminum material is generally used as a heat radiator of the power module at the present stage. Although the heat dissipation effect is good, the processing is convenient; however, there is usually a gap between the heat sink and the controller case, and water and dust may enter the inside of the controller case through the gap, thereby affecting the reliability of the motor controller.

Therefore, in order to solve the above technical problems, it is an urgent need to design a motor controller with good heat dissipation, simple structure and good sealing performance.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a motor controller to solve current technical problem, strengthen the leakproofness, improve the reliability of motor controller operation.

The utility model provides a motor controller, include: the shell is internally provided with a connecting plate; the radiator is connected with the shell and is positioned on one side of the connecting plate of the shell; the radiator is connected with the connecting plate of the shell, and a first sealing ring is arranged between the radiator and the contact surface of the connecting plate.

Preferably, the connecting plate is provided with a connecting hole, the radiator is provided with a threaded hole corresponding to the connecting plate, and a bolt penetrates through the connecting hole from the other side of the connecting plate to be connected with the threaded hole.

Preferably, the motor controller further comprises a clamp, and the clamp clamps the heat sink and the connecting plate.

Preferably, a buckle is arranged on one of the radiator and the connecting plate, a bayonet is arranged on the other of the radiator and the connecting plate, and the radiator and the connecting plate are clamped with each other.

Preferably, the connecting plate is further provided with a first opening, the connecting hole is arranged around the first opening, the size of the first opening is smaller than that of the radiator, and the connecting hole is located in the projection range of the radiator on the connecting plate.

Preferably, the threaded hole comprises a through hole or a blind hole.

Preferably, the heat sink includes a bottom plate and fins, the fins are perpendicular to the bottom plate, and the extending direction of the fins faces away from the connecting plate.

Preferably, at least one of the connecting plate and the bottom plate is provided with a groove for arranging the first sealing ring.

Preferably, the connection hole is located within the groove surrounding area or outside the groove surrounding area.

Preferably, the motor controller further comprises a capacitor substrate and a capacitor located on the capacitor substrate, a second opening is formed in the connecting plate, the capacitor substrate is connected with the connecting plate on one side, away from the heat sink, of the connecting plate, and at least part of the capacitor penetrates through the second opening.

Preferably, a guide sleeve is arranged on the second opening, and at least part of the capacitor is inserted into the guide sleeve.

Preferably, the guide sleeve is horn-shaped, and the end with the larger size of the guide sleeve faces one side of the capacitor substrate.

Preferably, the motor controller further comprises a second sealing ring, and the second sealing ring is located between the capacitor and the guide sleeve.

The utility model provides a machine controller has adopted the design of setting up the screw hole on the radiator for the intensity of screw hole is higher, and the bolt is inserted by casing one side and is connected, has strengthened being connected between casing and the radiator, and the leakproofness is better, and this screw hole still can set up to the blind hole, and this screw hole can not thoroughly run through the radiator promptly, thereby obtains better sealed effect. Certainly, still can set up the recess on radiator or casing, further promote the sealed effect of junction through the mode of setting up first sealing washer in the recess, when the screw thread was located the region that the recess encloses, the bolt also can obtain effectual sealed protection. Further, a second opening for penetrating the capacitor is further formed in the connecting plate, so that at least part of the capacitor is located in an open area on one side of the radiator, and better heat dissipation capacity is obtained. Still through set up guide pin bushing and second sealing washer on the connecting plate, fill the gap between connecting plate and electric capacity and seal, avoided the entering from the gap of dust, steam etc.. The motor controller has the advantages of simple structure, convenience in installation, low cost, better sealing performance and improvement on the running stability of the motor controller.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings.

Fig. 1 shows an exploded schematic view of a motor controller according to a first embodiment of the present invention;

fig. 2 shows an exploded schematic view of a motor controller according to a second embodiment of the present invention;

fig. 3 shows an exploded schematic view of a motor controller according to a third embodiment of the present invention;

fig. 4 shows a schematic view of a housing of a motor controller according to a third embodiment of the present invention;

fig. 5 shows a partially enlarged schematic view of a motor controller housing according to a third embodiment of the present invention;

fig. 6 shows a schematic partial cross-sectional view of a motor controller housing according to a third embodiment of the present invention;

fig. 7a and 7b are schematic cross-sectional views of second sealing rings in different forms of a motor controller according to a third embodiment of the present invention.

Detailed Description

The invention will be described in more detail below with reference to the accompanying drawings. Like elements in the various figures are denoted by like reference numerals. For purposes of clarity, the various features in the drawings are not necessarily drawn to scale. In addition, certain well known components may not be shown.

It will be understood that when an element or region is referred to as being "on" or "over" another element or region in describing a structure, it can be directly on the other element or region or intervening elements or regions may also be present. Also, if an element is turned over, that element or region may be "under" or "beneath" another element or region.

If it is intended to describe the situation as being directly above another element, another region, the expression "directly above … …" or "above and adjacent to … …" will be used herein.

In the following description, numerous specific details of some embodiments of the invention, such as structure, materials, dimensions, processing techniques and techniques of components, are set forth in order to provide a more thorough understanding of the invention. However, as will be understood by those skilled in the art, the present invention may be practiced without these specific details.

The present invention may be presented in a variety of forms, some of which are described below.

Fig. 1 shows an exploded schematic view of a motor controller according to a first embodiment of the present invention; it can be seen that the motor controller comprises: the heat sink comprises a housing 110, a heat sink 120 and a first sealing ring 130, wherein a connecting plate 111 for connecting with the heat sink 120 is arranged on the housing 110, a first opening 114 is arranged on the connecting plate 111, one side of the heat sink 120 facing the housing 110 is provided with a substrate with a power device, for example, the first opening 114 is smaller than the size of the heat sink 120 and larger than the size of the substrate thereon, for example, the first opening 114 is used for the substrate and the power device to pass through.

The casing 110 is, for example, a rounded rectangle, a connecting plate 111 is disposed in the casing 110, a rectangular first opening 114 is disposed on the connecting plate 111, a connecting hole 112 is disposed at an edge of the first opening 114, the connecting hole 112 is, for example, a circular through hole, the connecting hole 112 is located in a projection range of the heat sink 120 on the connecting plate 111, the connecting hole 112 is, for example, six, three connecting holes are divided into two rows and three connecting holes are respectively arranged on left and right sides of the first opening 114 in an array manner, a groove 113 is further disposed on a periphery of the plurality of connecting holes 112 arranged in an array manner, the groove 113 is, for example, used for accommodating a first sealing ring 130, and the connection between the heat sink 120 and the casing 110 is better in sealing performance through the first sealing ring 130.

The heat sink 120 is made of a metal material, the material of the heat sink includes, for example, aluminum, iron, copper, and the like, the heat sink 120 includes a bottom plate 121 and fins 122, the bottom plate 121 is, for example, a rectangular sheet, the fins 122 are, for example, plural, the plural fins 122 extend perpendicular to the bottom plate 121 to a side away from the bottom plate 121, a threaded hole 123 is provided on a side of the bottom plate 121 facing the housing 110, the threaded hole 123 is, for example, a through hole, and of course, the threaded hole 123 may also be a blind hole that does not penetrate through the bottom plate 121, so as to obtain a better sealing effect. When the motor controller is assembled, the first sealing ring 130 is pressed into the groove 113 on the connecting plate 111, the heat sink 120 is aligned with the first opening 114 on the connecting plate 111, a bolt is inserted into the connecting hole 112 from the side of the connecting plate 111 away from the heat sink 120, the bolt passes through the connecting hole 112 and is screwed into the threaded hole 123 on the bottom plate 121 of the heat sink 120, and the heat sink 120 is connected with the housing 110 by screwing the bolt. By tightening the bolts, the bottom plate 121 of the heat sink 120 is pressed against the connecting plate 111 of the housing 110, thereby compressing the first sealing ring 130, and the connection between the heat sink 120 and the housing 110 has better sealing performance. Of course, the groove 113 for receiving the first sealing ring 130 may also be provided on the bottom plate 121 of the heat sink 120, which also has a similar effect.

Compared with the commonly adopted bolt inserted into the side of the heat sink 120, the threaded hole is arranged on the shell, the threaded hole 123 is arranged on the heat sink 120 made of metal materials, the threaded hole 123 is higher in strength and is not easy to damage, the threaded hole 123 can also be a blind hole which does not penetrate through the bottom plate 121 of the heat sink 120, and the bolt does not penetrate through the heat sink 120, so that the connection tightness is better.

Further, fig. 2 shows a motor controller according to a second embodiment of the present invention, as shown in fig. 2, the structure of each part of the motor controller in the second embodiment is the same as that of the motor controller in the first embodiment, and will not be described herein again, and the difference between the second embodiment and the first embodiment is that the groove 213 is disposed inside the region surrounded by the connection hole 212, which, of course, also can play a role in enhancing the sealing performance.

Naturally, although in the first embodiment and the second embodiment, the heat sink and the connecting plate are connected by using bolts, according to the actual situation and the requirement, the heat sink and the connecting plate may also be connected by using other connection methods, for example, an elastic clamp is additionally arranged at the edge of the heat sink, and the heat sink and the connecting plate are clamped and connected by the elastic clamp; a buckle or a tenon can be arranged on one of the radiator and the connecting plate, and a bayonet is arranged on the other of the radiator and the connecting plate, so that the radiator and the connecting plate are connected in a clamping manner.

Fig. 3 shows an exploded schematic view of a motor controller according to a third embodiment of the present invention, the motor controller in this embodiment includes: the heat sink comprises a shell 310, a heat sink 320 and a first sealing ring 330, wherein a connecting plate 311 is arranged on the shell 310, a first opening 314 and a second opening 315 are arranged on the connecting plate 311, a through hole 312 for connecting with the heat sink 320 is arranged around the first opening 314, and a groove 313 for arranging the first sealing ring 330 is arranged on the periphery of the through hole 312. The structure of the above portion similar to that of the first embodiment is not repeated, and the following description focuses on the difference between the third embodiment and the first embodiment, where the motor controller further includes a capacitor substrate 352 and a cylindrical capacitor 351 located on the capacitor substrate 352, and the second opening 315 on the connection board 311 is used for passing through at least part of the capacitor 351, so that at least part of the capacitor 351 and the heat sink 320 are located on the same side of the connection board 311, thereby obtaining better heat dissipation capability. In order to enhance the sealing between the second opening 315 and the capacitor 351, referring to fig. 4 and 5, a guide sleeve 316 is disposed at the second opening 315, the shape of the guide sleeve 316 matches the cross-sectional shape of the capacitor 351, in this embodiment, the capacitor 351 is, for example, a cylinder, 4 capacitors are disposed on the same capacitor substrate 352, correspondingly, the second opening 315 is, for example, four circular openings, correspondingly, the guide sleeve 316 is also four cylindrical guide sleeves, the edge of the guide sleeve 316 is further provided with a threaded hole 317 for connection, and a screw fixes the capacitor substrate to the housing via 317 while pressing the second sealing ring 340. To further enhance the sealing, referring to fig. 6, one end of the guide sleeve 316 is larger than the other end, the larger end is located on the side of the connection plate 311 away from the heat sink 320, and the capacitor 351 is inserted from the larger end. Further, a second sealing ring 340 may be disposed between the capacitor 351 and the guide sleeve 316, as shown in fig. 7a, a cross section 341 of the second sealing ring 340 is similar to an egg, and one side of the second sealing ring is larger than the other side; certainly, as shown in fig. 7b, the cross section 342 of the second sealing ring 340 may also be trapezoidal, and the same size of one side is larger than that of the other side, so as to better fill the gap between the capacitor 351 and the guide sleeve 316 and enhance the sealing performance.

In the above description, technical details such as position combinations and connection modes of the respective components are not described in detail. It will be understood by those skilled in the art that the desired connection relationships, etc., may be formed by various technical means. In addition, in order to have the same function, those skilled in the art may also design a structure that is not exactly the same as the structure described above. In addition, although the embodiments are described separately above, this does not mean that the measures in the embodiments cannot be used in advantageous combination.

The embodiments of the present invention have been described above. However, these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof. Various alternatives and modifications can be devised by those skilled in the art without departing from the scope of the present invention, and these alternatives and modifications are intended to fall within the scope of the present invention.

Claims

1. A motor controller, comprising:

the shell is internally provided with a connecting plate;

the radiator is connected with the shell and is positioned on one side of the connecting plate of the shell;

the radiator is connected with the connecting plate of the shell, and a first sealing ring is arranged between the radiator and the contact surface of the connecting plate.

2. The motor controller according to claim 1, wherein the connecting plate is provided with a connecting hole, the heat sink is provided with a threaded hole corresponding to the connecting hole, and a bolt passes through the connecting hole from the other side of the connecting plate and is connected with the threaded hole.

3. The motor controller of claim 1, further comprising a clamp that clamps said heat sink to said connection plate.

4. The motor controller according to claim 1, wherein one of the heat sink and the connection plate is provided with a snap, and the other is provided with a bayonet, and the heat sink and the connection plate are engaged with each other.

5. The motor controller according to claim 2, wherein the connection plate further has a first opening, the connection hole is disposed around the first opening, the size of the first opening is smaller than that of the heat sink, and the connection hole is located in a projection range of the heat sink on the connection plate.

6. The motor controller of claim 2, wherein the threaded hole comprises a through hole or a blind hole.

7. The motor controller of claim 2, wherein said heat sink comprises a base plate and fins, said fins being perpendicular to said base plate, said fins extending in a direction away from said connecting plate.

8. The motor controller of claim 7, wherein at least one of said connecting plate and said base plate is provided with a groove for positioning a first sealing ring.

9. The motor controller of claim 8 wherein said attachment aperture is located within or outside of said groove-surrounding area.

10. The motor controller according to claim 1, further comprising a capacitor substrate and a capacitor disposed on the capacitor substrate, wherein a second opening is disposed on the connecting plate, the capacitor substrate is connected to the connecting plate on a side of the connecting plate away from the heat sink, and at least a portion of the capacitor passes through the second opening.

11. The motor controller of claim 10, wherein a guide sleeve is disposed over said second opening, at least a portion of said capacitor being inserted into said guide sleeve.

12. The motor controller of claim 11 wherein said guide sleeve is flared such that said larger dimension end of said guide sleeve faces said capacitor substrate.

13. The motor controller of claim 11 further comprising a second seal positioned between said capacitor and said guide sleeve.