Heat dissipation mechanism and controller thereof

Abstract

The utility model discloses a heat dissipation mechanism and a controller thereof, which belong to the field of heat dissipation technology, and the heat dissipation mechanism comprises a box body with a cavity and a heat dissipation assembly with a plurality of heat conduction surfaces. And the plurality of heat conduction surfaces and at least part of the inner wall of the cavity are enclosed together to form a heat conduction part for accommodating a heating device. According to the heat dissipation mechanism, the heat dissipation area can be increased, and the heat dissipation performance is improved.

Description

Technical Field

[0001] The utility model relates to the field of heat dissipation technology, in particular to a heat dissipation mechanism and a controller thereof. Background Art

[0002] In automation equipment, controllers are generally used to achieve automatic control. For example, in the field of brushless DC motor control, the controller is used to control the rotational output of the motor. By controlling the input current or voltage of the motor, different working states of the motor are achieved. The circuit part of the controller is located in the box body. The circuit part of the controller is different modules such as rectification, filtering, inversion, and control unit. Because the control continuously converts energy during the entire working process, the internal heating device will generate a lot of heat. The current controller generally achieves heat dissipation of the controller by installing the heat-conducting surface on one side of the heat sink on the heating device. The heat-conducting surface of the heat sink absorbs the heat of the heating device. When the internal space of the box body is limited, the space for arranging the heat sink is limited, and the area of ​​the heat-conducting surface will also be limited, resulting in a slow heat dissipation speed and poor heat dissipation performance. Utility Model Content

[0003] One purpose of the embodiments of the present utility model is to provide a heat dissipation mechanism that can increase the heat dissipation area and improve the heat dissipation performance.

[0004] Another purpose of the embodiment of the utility model is to provide a controller that uses a heat dissipation mechanism to increase the heat dissipation area and improve the heat dissipation performance, thereby increasing the service life of the controller.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] In one aspect, a heat dissipation mechanism is provided, comprising:

[0007] A box body having a cavity;

[0008] as well as

[0009] A heat dissipation component having a plurality of heat conducting surfaces;

[0010] The plurality of heat-conducting surfaces and at least a portion of the inner wall of the cavity together form a heat-conducting portion for exchanging heat with a heat-generating device.

[0011] The heat of the heating device can be dissipated by using multiple heat-conducting surfaces and at least part of the inner wall of the cavity, thereby increasing the heat dissipation area and improving the heat dissipation performance.

[0012] Optionally, the heat dissipation mechanism further includes a heat conducting member;

[0013] The box body also has a heat dissipation port; the cavity is connected to the outside of the box body through the heat dissipation port;

[0014] At least part of the heat dissipation component is located in the cavity and is used to be installed on the heat-generating device, and at least part of the heat dissipation component is located at the heat dissipation port;

[0015] The heat conducting member is clamped between the heat dissipation assembly and the inner wall of the cavity.

[0016] Improve heat dissipation performance through heat conduction parts and heat dissipation vents.

[0017] Optionally, the heat dissipation assembly includes a first heat dissipation member and a second heat dissipation member; the second heat dissipation member is located at the heat dissipation port, the first heat dissipation member and the second heat dissipation member are arranged at intervals, and the first heat dissipation member and the second heat dissipation member are both provided with a heat conducting surface;

[0018] At least part of the heat conducting member is clamped between the first heat dissipating member and the box body, and at least part of the heat conducting member is clamped between the second heat dissipating member and the box body. By providing the first heat dissipating member and the second heat dissipating member to increase the heat dissipation area and heat dissipation efficiency, the heat conducting member can improve the heat conduction performance between the heat dissipating assembly and the box body, thereby improving the heat dissipation performance.

[0019] Optionally, the first heat sink has a plurality of first heat dissipation ribs extending in a direction away from the second heat sink, the plurality of first heat dissipation ribs are arranged at intervals, and at least part of the heat conductor is clamped between one of the first heat dissipation ribs and the inner wall of the cavity. By providing the first heat dissipation ribs, the heat dissipation area of ​​the first heat sink is further increased, and the heat transfer efficiency is improved.

[0020] The second heat sink has a plurality of second heat dissipation ribs extending from the heat dissipation opening to the outside of the box body in a direction away from the first heat sink, the plurality of second heat dissipation ribs are arranged at intervals, and at least part of the heat conductive member is clamped between one of the second heat dissipation ribs and the inner wall of the cavity. The heat dissipation performance at the heat dissipation opening is improved by providing the second heat dissipation ribs.

[0021] Optionally, the box body includes a shell and a cover; the cover is mounted on the shell and together with the shell, forms the cavity and the heat dissipation port. By opening the cover, the installation of the heat dissipation assembly is facilitated.

[0022] Optionally, the heat dissipation component is in contact with the cover or the heat conductive member is clamped between the heat dissipation component and the cover, and the heat dissipation component is in contact with the cover directly or in contact with the box body indirectly through the heat conductive member, thereby achieving heat dissipation through the cover.

[0023] Optionally, the housing and / or the cover is a metal piece. The metal piece can improve the heat transfer efficiency, thereby improving the heat dissipation performance.

[0024] Optionally, the heat dissipation mechanism further includes a heat dissipation fan; the box body further includes a vent, the cavity is connected to the outside of the box body through the vent, and the heat dissipation fan is installed on the box body and located at the vent. Adding a heat dissipation fan can discharge internal heat from the vent, further improving the heat dissipation effect.

[0025] On the other hand, a controller is provided, comprising a circuit board, a heating device integrated on the circuit board, and the above-mentioned heat dissipation mechanism; the heating device is located at the heat conduction part. The heating device uses each heat conduction surface and the inner wall of the cavity of the box body to dissipate heat, thereby increasing the heat dissipation area.

[0026] Optionally, there are several heating devices arranged at intervals, each of which is located at the heat conducting portion, and at least part of the heat conducting surface is in contact with the heating device. Multiple heating devices are cooled simultaneously to improve efficiency and save installation space.

[0027] The beneficial effects of the utility model are as follows: the heat dissipation mechanism of the utility model is provided with a heat dissipation component, and the heat dissipation component is provided with multiple heat-conducting surfaces. The heat-generating device is surrounded by the multiple heat-conducting surfaces and the inner wall of the cavity of the box body. The heat of the heat-generating device can be dissipated through the heat conduction of the multiple heat-conducting surfaces and the box body, thereby increasing the heat dissipation area and improving the heat dissipation performance. The controller of the utility model increases the heat dissipation area and improves the heat dissipation performance by adopting the above-mentioned heat dissipation mechanism, thereby increasing the service life of the controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The utility model is further described in detail below based on the drawings and embodiments.

[0029] Figure 1 It is a schematic diagram of the structure of the controller;

[0030] Figure 2 for Figure 1 A schematic diagram of the structure from another perspective;

[0031] Figure 3 for Figure 1 Side view of

[0032] Figure 4 It is a heat dissipation path diagram of the heat dissipation mechanism;

[0033] Figure 5 It is a schematic diagram of the coordination of the housing, the heat dissipation component, and the circuit board;

[0034] Figure 6 It is a schematic diagram of the coordination between the heat dissipation component and the heating device;

[0035] Figure 7 for Figure 6 Top view of the .

[0036] Description of the accompanying drawings:

[0037] 11. Box body; 12. Heat dissipation assembly; 13. Heat conducting member; 14. Circuit board; 15. Heating element; 16. Fourth threaded connector;

[0038] 111, housing; 112, cover; 113, second threaded connector; 114, third threaded connector; 115, support column; 116, cavity; 117, heat dissipation port; 118, U-shaped groove;

[0039] 121. First heat sink; 122. Second heat sink; 123. Heat conduction portion; 124. First heat dissipation rib; 125. Second heat dissipation rib; 126. First threaded connector; 127. Heat conduction surface; 128. Mounting groove. DETAILED DESCRIPTION

[0040] In order to make the technical problems solved by the utility model, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the utility model will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0041] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "fixed", "connected", "communicated", "abutted", "clamped" and the like should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0043] In the description of this article, it should be understood that the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0044] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0045] In addition, it should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0046] Unless specifically stated or defined otherwise, the term “and / or” used in the present invention includes any and all combinations of one or more of the associated listed items.

[0047] For the convenience of description, unless otherwise specified, the up and down directions mentioned below are the same as Figure 3 The up and down directions are consistent.

[0048] In the related art, a controller refers to a main command device that changes the wiring of the main circuit or control circuit and the resistance value in the circuit in a predetermined order to control the start, speed regulation, braking and reversal of the motor. The controller includes a circuit part. In order to protect the circuit of the controller and facilitate the installation of the controller, the circuit part is generally installed in a box. The circuit part of the controller is composed of different modules such as rectification, filtering, inversion, and control unit. Each module includes different power devices, among which the power device is a heating device. When the controller is working, the heating device will generate a lot of heat. Therefore, in addition to considering the circuit design, the design of the heat dissipation mechanism of the controller is also very important. It is necessary to design a heat dissipation mechanism with a reasonable spatial structure and good heat dissipation performance to reduce the temperature of the module and the heating device.

[0049] In current controllers, the heat sink of the heat dissipation mechanism is installed on the heating device, and the heat is dissipated and guided out by the heat radiation of the heat sink to achieve the heat dissipation of the controller. However, due to the heat dissipation area of ​​the heat sink and the size of the heat dissipation port of the box body, the heat dissipation effect is not ideal, which leads to a large amount of heat easily accumulating inside the box body and affecting other components of the controller. The heat is dissipated by heat radiation from the air in the cavity of the box body, and the heat dissipation speed is slow and the heat dissipation performance is poor. Some controllers increase the heat sink or add a fan to the box body. The fan is used to drive the air on the surface of the heat sink to flow out of the heat dissipation port quickly, thereby accelerating the temperature reduction speed of the heating device. However, this heat dissipation structure requires a large space inside the box body to arrange the heat sink and the fan. When the space of the box body is limited, it is impossible to improve the heat dissipation effect in this way.

[0050] In order to solve the problems of limited internal space of the controller box, slow heat dissipation speed and poor heat dissipation performance in the related art, the embodiment of the present application provides a heat dissipation mechanism. The heat dissipation component of the embodiment of the present application has multiple heat-conducting surfaces, and uses multiple heat-conducting surfaces and the inner wall of the cavity of the box body to dissipate heat at the same time, thereby improving the heat dissipation efficiency. The multiple heat-conducting surfaces and the inner wall of the cavity of the box body jointly surround the heating device to prevent the heating device from accumulating a large amount of heat in the cavity of the box body and affecting other components of the controller.

[0051] like Figures 1 to 4 As shown, the heat dissipation mechanism provided by the present application includes a box body 11 and a heat dissipation assembly 12. The box body has a cavity 116, and the cavity 116 of the box body 11 is used to accommodate the electronic components of the controller to protect the electronic components of the controller. The electronic components include a circuit part, and the circuit part includes a heating device 15.

[0052] The heat dissipation component 12 has a plurality of heat-conducting surfaces 127. The plurality of heat-conducting surfaces 127 are located in the cavity 116, and the plurality of heat-conducting surfaces 127 are arranged along the circumference of the heating device 15. The plurality of heat-conducting surfaces 127 and the inner wall of the cavity 116 are enclosed together to form a heat-conducting portion 123. The heat-conducting portion 123 is used to accommodate the heating device 15. When the heating device 15 is installed in the heat-conducting portion 123, a portion of the heat of the heating device 15 can be discharged from the plurality of heat-conducting surfaces 127 to achieve heat dissipation, and a portion of the heat is discharged through the inner wall of the cavity and dissipated by the box body 11. Specifically, in the present embodiment, two heat-conducting surfaces 127 are located on both sides of the heating device 15, and the heating device 15 is located between the two heat-conducting surfaces 127. The upper end of the heat dissipation assembly 12 is in contact with the upper inner wall of the cavity 116, and the two heat-conducting surfaces 127 and a part of the upper inner wall of the cavity 116 are enclosed together to form a heat-conducting portion 123. The heat-conducting portion 123 can be a cavity or a slot body, which can accommodate the heating device 15, or it can be a space area formed by multiple heat-conducting surfaces 12 arranged at intervals and enclosed together with a part of the upper inner wall of the cavity 116. The inner wall of the heat-conducting portion 123 can absorb the heat of the heating device 15 and transfer it to the outside of the guide box body 11.

[0053] The present application utilizes multiple heat-conducting surfaces 127 and the box body 11 for heat dissipation, thereby increasing the heat dissipation area, improving heat dissipation efficiency and performance, and preventing the heating device 15 from accumulating a large amount of heat in the cavity of the box body and affecting other components of the controller.

[0054] Optionally, at least part of the heat-conducting surface 127 abuts against the heat-generating device 15 to improve the heat transfer efficiency.

[0055] In one embodiment, the heat dissipation mechanism further includes a heat conductor 13. The box body 11 also has a heat dissipation port 117. The heat conductor 13 is a good conductor of heat. The heat dissipation component 12 is a heat dissipation component such as a heat dissipation block. The heat dissipation component 12 and the heat conductor 13 are connected, and the heat generated by the heating device 15 is transferred to the heat dissipation component. A portion of the heat on the heat dissipation component 12 is dissipated from the heat dissipation port 117, and the remaining heat on the heat dissipation component 12 is transferred to the box body 11 through the heat conductor 13, and then transferred from the inside of the box body 11 to the outside, thereby increasing the heat conduction area of ​​the heat dissipation component 12, thereby improving the heat dissipation performance. The heat dissipation mechanism of the embodiment of the present application has high integration and space utilization. The heat dissipation component 12 is mounted on the heating device 15 through the heat-conducting portion 123 to achieve the installation of the heat dissipation component 12. Part of the heat on the heat dissipation component 12 is dissipated from the heat dissipation port 117, and the remaining heat on the heat dissipation component 12 and the heat in the box body 11 are radiated to the box body 11 through the heat-conducting member 13. The heat is exported through the box body 11, and the heat dissipation efficiency can be improved without increasing the area of ​​the heat dissipation component 12, so that more different modules can be installed in the space in the box body 11, thereby improving the space utilization of the box body.

[0056] The cavity 116 is connected to the outside of the box body 11 through the heat dissipation port 117, and the heat dissipation to the outside of the box body 11 can be accelerated through the heat dissipation port 117. The heat dissipation component 12 has a heat conduction function, and the heat of the heating device 15 can be quickly transferred to the heat dissipation component 12, which can accelerate the heat dissipation of the heating device 15.

[0057] The heat conducting member 13 is clamped between the heat dissipation component 12 and the inner wall of the cavity 116. The heat conducting member 13 can transfer a part of the heat on the heat dissipation component 12 to the box body 11, so that the heat can be transferred through the box body 11.

[0058] At least part of the heat dissipation component 12 is located in the cavity 116 and is used to be mounted on the heating device 15, and at least part of the heat dissipation component 12 is located at the heat dissipation port 117. The heat dissipation path when the heat dissipation mechanism is working is as follows Figure 4 As shown, a part of the heat dissipation component 12 is located at the heat dissipation port 117 and covers the heat dissipation port 117, and the heat in this area is dissipated from the heat dissipation port 117 to the air outside the box body 11. The rest of the heat dissipation component 12 is located in the cavity 116, and this area is connected to the inner wall of the cavity 116 through the heat conductive member 13, so that a part of the heat on the heat dissipation component 12 can be dissipated by the box body 11, and the heat is transferred from the heat dissipation component 12 through the heat conductive member 13 and the inside of the box body 11 to the outside of the box body 11. Compared with heat radiation using air, the heat dissipation efficiency and heat dissipation effect are better.

[0059] like Figure 1 , Figures 5 to 7 As shown, in one embodiment, the heat dissipation component 12 has a mounting groove 128 for accommodating the heating device 15. The mounting groove 128 of the heat dissipation component 12 is located in the cavity 116. The heat dissipation component 12 is clamped on the heating device 15 through the mounting groove 128. Specifically, the thermal conductive surface 127 is located on the inner wall of the mounting groove 128. The side surfaces of the heating device 15 are in contact with the thermal conductive surface 127, thereby improving the heat transfer efficiency, so that most of the heat on the heating device 15 can be transferred to the heat dissipation component 12 through the thermal conductive surface 127, thereby reducing the heat entering the cavity 116.

[0060] In one embodiment, the heat dissipation assembly 12 includes a first heat dissipation member 121 and a second heat dissipation member 122. A heat conducting surface 127 is provided on each of the first heat dissipation member 121 and the second heat dissipation member 122. The first heat dissipation member 121 and the second heat dissipation member 122 are arranged in a horizontal direction to form a mounting groove 128, and the heat conducting surface 127 is located on the inner wall of the mounting groove 128. The second heat dissipation member 122 is close to the inner wall of the cavity 116 and is located at the heat dissipation port 117, so as to facilitate heat dissipation by using the heat dissipation port 117. The first heat dissipation member 121 is close to the inside of the cavity 116. At least part of the heat conducting member 13 is clamped between the first heat dissipation member 121 and the inner wall of the cavity 116, and at least part of the heat conducting member 13 is clamped between the second heat dissipation member 122 and the inner wall of the cavity 116. Specifically, one end of the heat conductor 13 is located between the first heat sink 121 and the inner wall of the cavity 116, and the other end of the heat conductor 13 is located between the second heat sink 122 and the inner wall of the cavity 116. The middle area of ​​the heat conductor 13 is located above the mounting groove 128, and the heating device 15 is inserted into the mounting groove 128 from the bottom of the mounting groove 128, which facilitates the installation of the heat dissipation assembly 12. During installation, the first heat sink 121 and the second heat sink 122 are first fixed relatively to form the mounting groove 128, and then the mounting groove 128 is put on the heating device 15 to achieve quick installation. The inner wall of the mounting groove 128 and the inner wall of part of the cavity together form the heat conducting part 123. The first heat sink 121 and the second heat sink 122 can be relatively fixed by means of a connecting plate, a connecting bolt, etc. Optionally, the materials of the first heat sink 121 and the second heat sink 122 are both aluminum, which has a good thermal conductivity.

[0061] In this embodiment, the heat conducting surface 127 on the first heat dissipation element 121 and the heat conducting surface 127 on the second heat dissipation element 122 are arranged opposite to each other, and the heating device is located between the two heat conducting surfaces 127 .

[0062] Furthermore, the first heat sink 121 has a plurality of first heat dissipation ribs 124 extending in a direction away from the second heat sink 122, and the second heat sink 122 extends into the cavity 116. The plurality of first heat dissipation ribs 124 are arranged at intervals from top to bottom, and at least part of the heat conductor 13 is clamped between one of the first heat dissipation ribs 124 and the inner wall of the cavity 116. Specifically, one end of the heat conductor 13 is clamped between the first heat dissipation rib 124 located at the top and the inner wall at the top of the cavity 116. Through the plurality of first heat dissipation ribs 124, the area of ​​the first heat sink 121 is increased, so that the heat of the heating device 15 is better transferred to the first heat sink 121, and then the heat of each part of the first heat sink 121 is slowly transferred upward to the first heat dissipation rib 124 at the top, and finally dissipated to the air outside the box body 11 through the heat conductor 13 and the box body 11, thereby increasing the overall heat dissipation area of ​​the heat dissipation assembly 12 and improving the heat dissipation efficiency.

[0063] In one embodiment, the second heat dissipation member 122 has a plurality of second heat dissipation ribs 125 extending from the heat dissipation port 117 to the outside of the box body 11 in a direction away from the first heat dissipation member 121, the plurality of second heat dissipation ribs 125 are arranged at intervals from top to bottom, and at least part of the heat conductive member 13 is clamped between one of the second heat dissipation ribs 125 and the inner wall of the cavity 116. Specifically, the other end of the heat conductive member 13 is clamped between the second heat dissipation rib 125 located at the top and the inner wall of the top of the cavity 116. By means of a plurality of second heat dissipating ribs 125, the area of ​​the second heat dissipating element 122 is increased, so that the heat of the heating device 15 is better transferred to the second heat dissipating element 122, and then the heat of each part of the second heat dissipating element 122 is slowly transferred upward to the second heat dissipating rib 125 at the top, and finally dissipated to the air outside the box body 11 through the heat conducting element 13 and the box body 11. The end of the second heat dissipating rib 125 extends from the heat dissipating port 117 to the outside of the box body 11. Therefore, a part of the heat is transferred to the end of the second heat dissipating rib 125 and dissipated to the outside of the box body 11, thereby increasing the overall heat dissipation area of ​​the heat dissipating assembly 12 and achieving a better heat dissipation effect.

[0064] In this way, the first heat sink 121 and the second heat sink 122 have the same structure, and the first heat sink 121 and the second heat sink 122 are distributed in a mirror-symmetrical manner with the heating device 15 as the center. Through the cooperation between the first heat dissipation rib 124 and the second heat dissipation rib 125 and the heat conducting member 13, the heat dissipation area of ​​the first heat sink 121 and the second heat sink 122 is most effectively utilized, that is, the convection between the inner wall of the cavity 116 of the box body 11, the second heat dissipation rib 125 and the external air is utilized, and the heat dissipation effect is greatly enhanced.

[0065] Optionally, the heat dissipation assembly 12 also includes a first threaded connector 126. The first threaded connector 126 is a component such as a bolt or a screw. The first heat dissipation member 121 is connected to the second heat dissipation member 122 through the first threaded connector 126. The first heat dissipation member 121 and the second heat dissipation member 122 are both provided with a plurality of threaded holes, and there are a plurality of first threaded connectors 126. The threaded holes on the first threaded connector 126, the first heat dissipation member 121, and the threaded holes on the second heat dissipation member 122 correspond one to one. The first threaded connector 126 passes through the threaded holes on the first heat dissipation member 121 and the threaded holes on the second heat dissipation member 122 to achieve quick connection between the first heat dissipation member 121 and the second heat dissipation member 122. The size of the mounting groove 128 can also be adjusted according to the size of the heating device 15, so as to facilitate the assembly of the heat dissipation assembly 12 and the heating device 15.

[0066] Optionally, the box body 11 includes a shell 111 and a cover 112. The shell 111 is provided with a receiving groove, and the cover 112 is mounted on the shell 111 and together with the inner wall of the receiving groove of the shell 111, forms a cavity 116 and a heat dissipation port 117. The cover body 112 is located above the shell body 111, and the cover body 112 covers the shell body 111. The heat dissipation port 117 is located on the side of the box body 11. The shell body 111 and the cover body 112 facilitate the installation of the heating component and the heat-conducting member 13. When installing the heat dissipation mechanism, first install the circuit part of the controller in the accommodating groove, and then assemble the first heat sink 121 and the second heat sink 122 to form a heating component, and then install the heating component on the heating device 15 of the circuit part, and then install the heat-conducting member 13 on the first heat sink 121 and the second heat sink 122. Finally, install the cover body 112 so that the lower end surface of the heat-conducting member 13 abuts against the first heat sink 121 and the second heat sink 122, and the upper end surface of the heat-conducting member 13 abuts against the cover body 112.

[0067] Optionally, the heat dissipation port 117 is provided on the housing 111, and the heat dissipation assembly 12 has two installation modes, one of which is that the upper end of the heat dissipation assembly 12 directly contacts the cover 112, and directly transfers the heat to the cover 112. The other is that the upper end of the heat dissipation assembly 12 contacts the cover 112 through the heat conductive member 13, and indirectly transfers the heat to the cover 112. In the second mode, the heat conductive member 13 is clamped between the heat dissipation assembly 12 and the cover 112. The heat dissipation port is provided on the side of the housing to achieve side heat dissipation, and the heat conductive member is clamped between the heat dissipation assembly and the cover, and the upper cover is used to achieve top surface heat dissipation.

[0068] In addition, in some other embodiments, the heat conducting member is sandwiched between the heat dissipation assembly and the housing, so that heat dissipation can be achieved by utilizing the housing.

[0069] Optionally, the housing 111 and / or the cover 112 are good conductors of heat. The housing 111 and / or the cover 112 are metal parts, such as copper, aluminum, etc., to improve the efficiency of heat dissipation. Specifically, in this embodiment, the material of the cover 112 is an aluminum plate, and the cover 112 abuts against the heat conducting member 13 to achieve rapid heat dissipation.

[0070] Optionally, the box body 11 further includes a second threaded connector 113. The second threaded connector 113 is a bolt, a screw or other component. The cover body 112 is connected to the housing 111 through the second threaded connector 113. The cover body 112 and the housing 111 are both provided with a plurality of threaded holes. There are a plurality of second threaded connectors 113. The threaded holes on the second threaded connector 113, the cover body 112 and the housing 111 correspond to each other one by one. The cover body 112 and the housing 111 are quickly connected by the second threaded connector 113 passing through the threaded holes on the cover body 112 and the threaded holes on the housing 111.

[0071] The box body 11 also includes a third threaded connector 114. The third threaded connector 114 is a bolt, a screw or other component. The heat dissipation component 12 is installed on the housing 111 through the third threaded connector 114, and the heat conducting member 13 is clamped between the heat dissipation component 12 and the cover body 112. There are multiple third threaded connectors 114, and the heat dissipation component 12 is provided with multiple threaded holes corresponding to the third threaded connectors 114 one by one. The third threaded connector 114 cooperates with the threaded holes on the heat dissipation component 12 to achieve the installation of the heat dissipation component 12.

[0072] Specifically, a U-shaped groove 118 is provided on the shell 111, and the U-shaped groove 118 is located at the edge of the heat dissipation port 117. A threaded hole adapted to the third threaded connector 114 is provided on the second heat dissipation member 122 of the heat dissipation assembly 12. The third threaded connector 114 passes through the threaded hole on the heat dissipation assembly 12 and the U-shaped groove 118 on the shell 111. The relative position of the heat dissipation assembly 12 and the shell 111 can be adjusted through the U-shaped groove 118, thereby avoiding the installation of the heat dissipation assembly 12 being affected by manufacturing errors or changes in the model of the heat dissipation assembly 12, and facilitating the installation of the heat dissipation assembly 12.

[0073] In one embodiment, the heat dissipation mechanism further includes a heat dissipation fan. The box body 11 also has a vent, and the cavity 116 is connected to the outside of the box body 11 through the vent. The heat dissipation fan is installed on the box body 11 and located at the vent. If space permits, a heat dissipation fan can be added to quickly discharge the heat in the cavity 116 to further improve the heat dissipation efficiency.

[0074] At the same time, the embodiment of the present application also provides a controller that can be used in the field of brushless DC motor control and can also be applied in other fields of automatic control equipment.

[0075] The controller includes a circuit board 14, a heating device 15 integrated on the circuit board 14, and the above-mentioned heat dissipation mechanism. The circuit board 14 is a circuit board, the heating device 15 is welded on the circuit board 14 to achieve electrical connection with the circuit board 14, and the heat dissipation assembly 12 is installed on the heating device 15 to achieve rapid heat dissipation. The heating device 15 is located at the heat conducting portion 123, and the heating device 15 is located in the area enclosed by multiple heat conducting surfaces 127 and at least part of the inner wall of the cavity 116. Specifically, the heating device 15 is located in the mounting groove 128.

[0076] Optionally, there are several heating devices 15 and they are arranged at intervals, and multiple heat-conducting surfaces 127 are located on the inner wall of the mounting groove 128 of the heat dissipation assembly 12. Multiple heat-conducting surfaces 127 jointly enclose and clamp each heating device 15, and at least part of the heat-conducting surfaces 127 abut against each heating device 15. A heat dissipation mechanism can dissipate heat for multiple heating devices 15 at the same time. Compared with the prior art in which each heater is equipped with a heat dissipation mechanism, the overall structure of the controller of this embodiment is simpler, smaller in size, and lower in cost. The controller achieves a better heat dissipation effect without changing the basic structure and space of the box body 11, reduces the use requirements of the heating device 15, reduces the temperature of the controller, and increases the service life of the controller.

[0077] In one embodiment, the controller further includes a fourth threaded connector 16. The fourth threaded connector 16 is a bolt, a screw or other component. A support column 115 is provided on the inner wall of the cavity 116, and the circuit board 14 abuts against the support column 115 and is connected to the box body 11 through the fourth threaded connector 16. A threaded hole is provided on the inner wall of the cavity 116 or the support column 115. Specifically, in this embodiment, a threaded hole is provided on the support column 115, and the fourth threaded connector 16 is threadedly connected to the threaded hole on the support column 115 to achieve the installation of the circuit board 14. The support column 115 allows a certain reduction between the circuit board 14 and the inner wall of the cavity 116, so that a small part of the heat generated by the circuit board 14 can flow out to the cavity 116 to be absorbed by the heat dissipation component 12.

[0078] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementation methods of the present invention without creative work, and these methods will fall within the protection scope of the present invention.

Claims

1. A heat dissipation mechanism, characterized in that: include: The box body (11) has a cavity (116); as well as A heat dissipation component (12) having a plurality of heat conducting surfaces (127); The plurality of heat-conducting surfaces (127) and at least a portion of the inner wall of the cavity (116) together form a heat-conducting portion (123) for exchanging heat with a heating device (15).

2. The heat dissipation mechanism according to claim 1, characterized in that: Also includes a heat conducting member (13); The box body (11) also has a heat dissipation port (117); the cavity (116) is connected to the outside of the box body (11) through the heat dissipation port (117); At least part of the heat dissipation component (12) is located in the cavity (116) and is used to be installed on the heating device (15), and at least part of the heat dissipation component (12) is located at the heat dissipation port (117); The heat conducting member (13) is clamped between the heat dissipating assembly (12) and the inner wall of the cavity (116).

3. The heat dissipation mechanism according to claim 2, characterized in that: The heat dissipation assembly (12) comprises a first heat dissipation element (121) and a second heat dissipation element (122); the second heat dissipation element (122) is located at the heat dissipation opening (117); the first heat dissipation element (121) and the second heat dissipation element (122) are arranged at intervals; and the first heat dissipation element (121) and the second heat dissipation element (122) are both provided with the heat conduction surface (127); At least part of the heat conducting member (13) is clamped between the first heat dissipating member (121) and the box body (11), and at least part of the heat conducting member (13) is clamped between the second heat dissipating member (122) and the box body (11).

4. The heat dissipation mechanism according to claim 3, characterized in that: The first heat dissipation element (121) has a plurality of first heat dissipation ribs (124) extending in a direction away from the second heat dissipation element (122), the plurality of first heat dissipation ribs (124) being arranged at intervals, and at least a portion of the heat conducting element (13) being clamped between one of the first heat dissipation ribs (124) and the inner wall of the cavity (116); The second heat dissipation element (122) has a plurality of second heat dissipation ribs (125) extending from the heat dissipation port (117) to the outside of the box body (11) along a direction away from the first heat dissipation element (121); the plurality of second heat dissipation ribs (125) are arranged at intervals, and at least a portion of the heat conductive element (13) is clamped between one of the second heat dissipation ribs (125) and the inner wall of the cavity (116).

5. The heat dissipation mechanism according to any one of claims 2 to 4, characterized in that: The box body (11) comprises a shell (111) and a cover (112); the cover (112) is mounted on the shell (111) and together with the shell (111) encloses the cavity (116) and the heat dissipation port (117).

6. The heat dissipation mechanism according to claim 5, characterized in that: The heat dissipation component (12) and the cover body (112) are in abutment with each other or the heat conduction component (13) is clamped between the heat dissipation component (12) and the cover body (112).

7. The heat dissipation mechanism according to claim 6, characterized in that: The shell (111) and / or the cover (112) are metal parts.

8. The heat dissipation mechanism according to any one of claims 1 to 4, characterized in that: It also includes a heat dissipation fan; the box body (11) also has a vent, the cavity (116) is connected to the outside of the box body (11) through the vent, and the heat dissipation fan is installed on the box body (11) and located at the vent.

9. A controller, characterized in that: It comprises a circuit board (14), a heating device (15) integrated on the circuit board (14), and the heat dissipation mechanism according to any one of claims 1 to 8; the heating device (15) is located at the heat conducting part (123).

10. The controller according to claim 9, characterized in that: There are a plurality of heating elements (15) arranged at intervals, and at least a portion of the heat-conducting surface (127) abuts against the heating element (15).

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