Driver and motor driving system

Abstract

The utility model discloses a driver and a motor driving system, the driver comprises a radiator, a control panel and a fan, the radiator comprises a main body and a heat conduction support, the main body is provided with a plurality of heat radiation fins, the plurality of heat radiation fins define a plurality of air channels at the first side of the radiator, and the heat conduction support is arranged at the edge of the main body; the control panel is connected to the heat conduction support and located on the first side of the radiator. The fan is connected to the side, facing the cooling fins, of the body. An outlet of the fan communicates with the air duct. The first ribs are arranged on the side, close to the heat conduction support, of the body, the first ribs are arranged along the edge of the body, the first ribs can separate the air channel from the control panel in the installation area of the heat conduction support, dust and other sundries are prevented from entering the installation area of the control panel along the air channel through the first ribs, and dust and other sundries accumulated on the control panel can be effectively reduced; therefore, the risk of damage to electronic devices of the control panel is reduced, and the reliability and stability of the driver are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of servo drive, in particular to a driver and a motor drive system. Background Art

[0002] In the related art, the heat sink of the driver uses heat dissipation fins to dissipate heat. In order to improve the heat dissipation effect, the heat dissipation fins are arranged in a certain pattern to form an air duct, and the heat of the heat dissipation fins is removed by a fan. Since dust and other debris can easily enter the driver, when the airflow flows along the air duct to dissipate heat, dust and other debris can easily accumulate on the circuit board, causing damage to the electronic components of the circuit board and reducing the reliability and stability of the product. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a driver that can reduce the entry of dust and other debris into the circuit board along the air duct, reduce the risk of circuit board failure, and has higher reliability and stability.

[0004] The utility model also provides a motor drive system including the driver.

[0005] According to the driver of the first aspect embodiment of the utility model, it includes: a radiator, a control board and a fan, the radiator includes a main body and a heat-conducting bracket, the main body is provided with a plurality of heat dissipating fins, the plurality of heat dissipating fins define a plurality of air ducts on the first side of the radiator, and the heat-conducting bracket is arranged at the edge of the main body; the control board is connected to the heat-conducting bracket and is located on the first side of the radiator; the fan is connected to a side of the main body facing the heat dissipating fins, and the outlet of the fan is connected to the air duct; wherein, a first rib is provided on a side of the main body close to the heat-conducting bracket, the first rib is arranged along the edge of the main body, and is constructed to separate the air duct from the control board in the installation area of ​​the heat-conducting bracket.

[0006] The driver according to the embodiment of the utility model has at least the following beneficial effects:

[0007] The driver uses a radiator and a fan to dissipate heat from the control board. A plurality of heat dissipation fins are distributed on the main body of the radiator, and a plurality of air ducts are defined on a first side of the radiator. The control board is connected to a heat-conducting bracket. The heat generated by the control board can be transferred to the main body through the heat-conducting bracket. When the fan supplies air, the airflow can flow along the air duct, thereby taking away the heat from the heat dissipation fins and the main body, and the heat dissipation efficiency is high. A first rib is arranged on a side of the main body close to the heat-conducting bracket. The first rib is arranged along an edge of the main body. The first rib can separate the air duct from the installation area of ​​the control board in the heat-conducting bracket. The first rib blocks dust and other debris from entering the installation area of ​​the control board along the air duct, which can effectively reduce the accumulation of dust and other debris on the control board, thereby reducing the risk of damage to the electronic components of the control board and improving the reliability and stability of the driver.

[0008] According to some embodiments of the present invention, the driver further includes a power board, which is connected to the heat-conducting bracket and the main body and is located on the second side of the heat sink.

[0009] According to some embodiments of the utility model, the plurality of heat dissipating fins include a plurality of first fins and a plurality of second fins, the plurality of first fins are radially distributed along the direction of the main body toward the heat-conducting bracket, a first air duct is defined between adjacent first fins, a plurality of second fins are distributed at one end of the first air duct away from the heat-conducting bracket, and a plurality of second air ducts connected to the first air duct are defined, the first rib is located between the air outlet end of the first air duct and the heat-conducting bracket, the fan is at least partially located in the distribution area of ​​the second fins, the outlet of the fan is arranged toward the first side of the radiator, and the first air duct and the second air duct are respectively connected to the outlet of the fan.

[0010] According to some embodiments of the present invention, along the length direction of the first rib, the outer contour line of the first rib is wavy.

[0011] According to some embodiments of the utility model, a bus capacitor is provided on the side of the power board facing the main body, and the main body is provided with a notch for avoiding the bus capacitor; along the direction of the main body away from the thermal conductive bracket, a plurality of second fins are arranged in parallel, and the second air duct is defined between adjacent second fins, and the second air duct is arranged toward the bus capacitor.

[0012] According to some embodiments of the utility model, one end of the power board is connected to the heat-conducting bracket, and a through hole is provided at the corner of the other end; a screw hole and a third rib are provided at one end of the main body away from the heat-conducting bracket, and the third rib is arranged along the circumference of the screw hole and is constructed to position the corner so that the through hole corresponds to and cooperates with the screw hole.

[0013] According to some embodiments of the utility model, the main body is further provided with a second rib, which is arranged on the first side of the heat sink close to the notch, and the second rib is constructed to separate the wiring of the fan from the notch.

[0014] According to some embodiments of the utility model, the driver also includes a shell, the radiator, the control board, the power board and the fan are respectively arranged in the shell, the shell is provided with an air inlet and an air outlet, the air inlet is located at one end surface of the shell and is connected to the inlet of the fan, and the air outlet is provided with two and is respectively located on both sides of the shell along a direction perpendicular to the main body toward the heat-conducting bracket.

[0015] According to some embodiments of the utility model, the first side of the radiator is provided with a plurality of connection columns arranged at intervals, the fan is provided with a plurality of connection holes, and the plurality of connection columns correspond one-to-one to the plurality of connection holes and are connected by interference fit.

[0016] The motor drive system according to the second embodiment of the utility model includes the driver described in the first embodiment.

[0017] The motor drive system according to the embodiment of the utility model has at least the following beneficial effects:

[0018] The motor drive system uses the driver of the embodiment to drive the motor. Since the first rib can separate the air duct from the installation area of ​​the control board in the heat-conducting bracket, the first rib blocks dust and other debris from entering the installation area of ​​the control board along the air duct, effectively reducing the accumulation of dust and other debris on the control board, thereby reducing the risk of damage to the electronic components of the control board, improving the reliability and stability of the driver, and making the motor drive system more durable.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0021] Figure 1 It is an overall schematic diagram of a driver according to an embodiment of the utility model;

[0022] Figure 2 This is a schematic diagram of the exploded structure of a driver according to an embodiment of the present utility model;

[0023] Figure 3 It is a side view of the exploded structure of the heat sink, circuit board and fan of one embodiment of the utility model;

[0024] Figure 4 This is a schematic diagram of the three-dimensional structure of a radiator according to an embodiment of the utility model;

[0025] Figure 5 This is a front structural schematic diagram of a radiator according to an embodiment of the utility model;

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the heat sink and the power board assembled in one embodiment of the utility model;

[0027] Figure 7 It is a front structural schematic diagram of the assembly of the heat sink and the power board according to one embodiment of the utility model;

[0028] Figure 8 It is a schematic diagram of the back structure of the heat sink and the power board assembled in one embodiment of the utility model;

[0029] Fig. 9 for Figure 8 A magnified schematic diagram of center A.

[0030] Figure Number:

[0031] Housing 100; air inlet 110; air outlet 120; card slot 130;

[0032] Radiator 200; body 210; first surface 2101; connecting plate 211; screw hole 2111; third rib 212; vertical rib 2121; transverse rib 2122; heat-conducting bracket 220; cross bar 221; vertical bar 222; mounting area 223; first connecting column 224; heat dissipating fin 230; first fin 231; first air duct 2311; second fin 232; second air duct 2321; first rib 240; second connecting column 250; notch 260; second rib 270;

[0033] Circuit board 300; control board 310; power board 320; bus capacitor 321; through hole 322;

[0034] Fan 400; inlet 410; connection hole 420; wiring 430;

[0035] Drive 1000. DETAILED DESCRIPTION

[0036] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0037] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0038] In the description of the utility model, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0039] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0040] Reference Figure 1 and Figure 2 As shown, the driver 1000 of the embodiment of the utility model includes a housing 100, a heat sink 200, a circuit board 300 and a fan 400. The housing 100 has a receiving cavity, and the heat sink 200, the circuit board 300 and the fan 400 are installed in the receiving cavity. The housing 100 can protect the heat sink 200, the circuit board 300 and the fan 400. The circuit board 300 and the fan 400 are respectively connected to the heat sink 200. The housing 100 is provided with an air inlet 110 and an air outlet 120, wherein the air inlet 110 is connected to the inlet 410 of the fan 400.

[0041] Reference Figure 3 , Figure 4 and Figure 5As shown, the heat sink 200 includes a main body 210 and a heat conductive bracket 220, the front side of the heat sink 200 is the first side of the heat sink 200, and the rear side of the heat sink 200 is the second side of the heat sink 200, wherein the main body 210 is a plate structure, the main body 210 is provided with a plurality of heat dissipation fins 230, the plurality of heat dissipation fins 230 are arranged on the front side of the main body 210, the surface of the front side is the first surface 2101, the heat conductive bracket 220 is connected to the edge of the upper end of the main body 210, and the circuit board 300 is connected to the heat conductive bracket 220. The fan 400 is connected to the front side of the main body 210, the air inlet 110 is located on the front side of the housing 100, and is arranged opposite to the inlet 410 of the fan 400. A plurality of heat dissipating fins 230 are arranged at intervals on the first surface 2101, and air ducts can be defined between adjacent heat dissipating fins 230, so that a plurality of air ducts are distributed on the first surface 2101 of the main body 210, and the air ducts are connected to the outlet of the fan 400. When working, the fan 400 draws air into the accommodating cavity from the air inlet 110, and the air flow passes through the inlet of the fan 400 and is blown toward the air duct from the outlet of the fan 400, thereby taking away the heat from the heat dissipating fins 230.

[0042] It should be noted that the main body 210 and the heat-conducting bracket 220 are made of heat-conducting materials, such as aluminum, copper, aluminum alloy and other materials. In the embodiment, the main body 210 and the heat-conducting bracket 220 adopt an integrally formed structure, and the heat dissipation fins 230 are integrally formed on the first surface 2101 of the main body 210. The heat sink 200 as a whole has high strength and thermal conductivity. The heat generated by the circuit board 300 can be transferred to the main body 210 through the heat-conducting bracket 220, and the heat is taken away by the fan 400, thereby realizing the heat dissipation of the circuit board 300. In some embodiments, the main body 210 and the heat-conducting bracket 220 can also adopt a split structure, for example, the heat-conducting bracket 220 is connected to the main body 210 by fasteners such as bolts, and no further limitation is made.

[0043] It can be understood that the circuit board 300 is a printed circuit board (PCB) assembled with electronic components, also known as a PCBA board. The circuit board 300 has heating devices, such as a rectifier bridge, an insulated gate bipolar transistor (IGBT), a capacitor and a field effect transistor (MOS tube), an intelligent power module (IPM) and other devices. When the circuit board 300 is connected to the heat-conducting bracket 220, the above-mentioned heating device is arranged on the side of the circuit board 300 facing the heat-conducting bracket 220 and is connected to the heat-conducting bracket 220. When working, the heat generated by the heating device can be transferred to the heat-conducting bracket 220, and the heat will be transferred to the main body 210 along the heat-conducting bracket 220. The fan 400 can be used to quickly dissipate the heat of the heat dissipation fins 230 of the main body 210, thereby improving the heat dissipation efficiency, ensuring that the circuit board 300 can operate at a suitable temperature, and improving the reliability of the operation of the driver 1000.

[0044] Reference Figure 3 and Figure 4 As shown, specifically, the heat-conducting bracket 220 is a frame, and the frame includes a crossbar 221 and two vertical bars 222. The two vertical bars 222 are connected to the two ends of the main body 210 in the vertical direction, and the two ends of the crossbar 221 are respectively connected to the two vertical bars 222, so that the frame and the main body 210 cooperate to form a closed loop structure. In the embodiment, the vertical bar 222 is provided with a first connecting column 224, and the circuit board 300 is fixedly connected to the first connecting column 224 by fasteners such as screws. Since the heat-conducting bracket 220 has thermal conductivity as a whole, the heating device can be connected to the crossbar 221 or the vertical bar 222. Taking the rectifier bridge as an example, the rectifier bridge is a package, and the pins of the rectifier bridge are connected to the PCB board, and the heating surface of the rectifier bridge is attached to the surface of the crossbar 221. The rectifier bridge can be fixedly connected to the crossbar 221 by screws, so that the heat generated by the rectifier bridge can be transferred to the crossbar 221, and then transferred to the main body 210 along the crossbar 221 and the vertical bar 222 in turn.

[0045] Reference Figure 2 and Figure 3 As shown, the circuit board 300 includes a control board 310 and a power board 320. The control board 310 is connected to the front side of the heat-conducting bracket 220 and is located on the upper side of the main body 210. The power board 320 is connected to the rear side of the heat-conducting bracket 220. The power board 320 is extended toward the main body 210. The electronic components of the control board 310 and the power board 320 are all arranged toward the heat-conducting bracket 220. That is, the control board 310 and the fan 400 are arranged on the front side of the radiator 200, and the power board 320 is arranged on the rear side of the radiator 200, that is, the power board 320 is located on the second side of the radiator 200. Among them, the control board 310 is provided with a first heating device such as a control chip and a diode, and the power board 320 is provided with a second heating device such as a rectifier bridge, an IGBT module, and an IPM module. In some embodiments, the first heating device is connected to the thermally conductive bracket 220, and the second heating device is connected to the side of the main body 210 away from the heat dissipation fins 230. The side of the main body 210 away from the heat dissipation fins 230 is the back side of the main body 210, so that the heat generated by the first heating device of the control board 310 is transferred to the main body 210 through the thermally conductive bracket 220, and the heat generated by the second heating device of the power board 320 is directly transferred to the main body 210. In this way, the heat of the above-mentioned heating devices can be concentrated on the main body 210, and the fan 400 can be used to achieve rapid heat dissipation, ensuring that both the control board 310 and the power board 320 can operate at an appropriate temperature.

[0046] In other embodiments, the heating devices of the control board 310 and the power board 320 are connected to the heat-conducting bracket 220. Specifically, the first heating device and the second heating device can be arranged along the length direction of the horizontal bar 221 and the vertical bar 222. It is also possible to connect part of the second heating device to the main body 210, and connect the other part of the second heating device to the heat-conducting bracket 220. For example, the IPM module and the IGBT module are connected to the back of the main body 210, and the rectifier bridge is connected to the heat-conducting bracket 220. The layout is specifically made according to the actual assembly requirements.

[0047] Reference Figure 4 and Figure 5 As shown, a first rib 240 is provided on the upper side of the main body 210. The first rib 240 extends along the edge of the main body 210, specifically from the left end to the right end of the upper side of the main body 210. The first rib 240 protrudes from the first surface 2101 of the main body 210. The first rib 240 separates the air duct from the circuit board 300 in the installation area 223 of the heat-conducting bracket 220. The heat-conducting bracket 220 is located above the main body 210. The installation area 223 can be understood as an area located above the main body 210 and covered by the connection between the circuit board 300 and the heat-conducting bracket 220. Since the middle part of the heat-conducting bracket 220 is a hollow structure, that is, the front and rear sides of the heat-conducting bracket 220 are connected, the installation area 223 includes the front and rear areas of the heat-conducting bracket 220. Among them, Figure 5 The position shown in the dotted box is roughly the installation area 223.

[0048] It is understandable that a plurality of heat dissipation fins 230 are arranged on the first surface 2101 to form a plurality of air ducts, and the air ducts may be arranged along the length direction or the height direction of the main body 210, or may be distributed in a radial form, where the radial form may be understood as a shape in which the heat dissipation fins 230 are arranged to spread outward from the center of the main body 210. The airflow generated by the fan 400 can flow along the air duct, thereby taking away the heat of the heat dissipation fins 230 and the main body 210, with high heat dissipation efficiency, thereby achieving heat dissipation of the control board 310 and the power board 320.

[0049] In the related art, there is no isolation between the air duct and the circuit board 300. When the airflow flows along the air duct, dust and other debris are easily blown along the air duct to the circuit board 300, causing dust to accumulate on the circuit board 300, causing damage to electronic components and reducing the reliability of the driver 1000. Since the air duct is distributed on the first surface 2101 of the main body 210, the embodiment of the utility model adds a first rib 240 on the upper side of the main body 210. The first rib 240 can separate the air duct from the above-mentioned installation area 223, so that the first rib 240 can prevent dust and other debris from entering the circuit board 300 along the air duct, effectively reducing the accumulation of dust and other debris on the circuit board 300, thereby reducing the risk of failure of the circuit board 300 and improving the reliability and stability of the driver 1000.

[0050] Reference Figure 5 As shown, in some embodiments, the plurality of heat dissipation fins 230 include a plurality of first fins 231 and a plurality of second fins 232, the plurality of first fins 231 are arranged on the upper portion of the first surface 2101 of the main body 210, the plurality of first fins 231 are radially distributed along the main body 210 toward the heat conduction bracket 220, and a first air duct 2311 is defined between adjacent first fins 231, so that the extension directions of the plurality of first air ducts 2311 are different and roughly radial, that is, the plurality of first air ducts 2311 diverge in different directions; the plurality of second fins 232 are arranged on the lower portion of the first surface 2101 of the main body 210, that is, located below the first fins 231, the plurality of second fins 232 are arranged along the left and right direction of the main body 210, and the adjacent second fins 232 are arranged in parallel to define a second air duct 2321, the second air duct 2321 is connected to the first air duct 2311, and the plurality of second air ducts 2321 are extended along the left and right direction of the main body 210. The first air duct 2311 and the second air duct 2321 cooperate to make the air flow smoother, the heat dissipation effect better, and the heat dissipation performance improved. This is only an example. In other embodiments, the plurality of second fins 232 are not limited to being distributed in parallel, but can also be distributed in a radial shape toward both sides of the main body 210.

[0051] Reference Figure 5 As shown, it can be understood that the fan 400 is connected to the front side of the main body 210, the inlet 410 of the fan 400 faces the front side, the outlet of the fan 400 is arranged toward the main body 210, and part of the heat dissipation fins 230 are located between the outlet of the fan 400 and the main body 210, so that the outlet is connected to the first air duct 2311 and the second air duct 2321. After the airflow generated by the fan 400 flows out from the outlet of the fan 400, part of the airflow can flow upward along the multiple first air ducts 2311 in a radial shape, and the other part of the airflow flows along the multiple second air ducts 2321 to the left and right sides of the main body 210, so that the heat of the heat dissipation fins 230 can be quickly taken away. It should be noted that in some embodiments, the fan 400 is installed in the distribution area of ​​the multiple second fins 232, that is, the fan 400 is located at the lower part of the first surface 2101 of the main body 210, and the outlet of the fan 400 is arranged toward the first surface 2101, so that the first air duct 2311 and the second air duct 2321 are both connected to the outlet of the fan 400. In other embodiments, the fan 400 may be partially located in the distribution area of ​​the first fin 231 and another part located in the distribution area of ​​the second fin 232 to ensure that the outlet of the fan 400 can connect the first air duct 2311 and the second air duct 2321 .

[0052] It can be understood that since the first rib 240 is located at the upper edge of the main body 210, the outlets of the first air duct 2311 are all set in the direction of the first rib 240, and the first air duct 2311 can be separated from the above-mentioned installation area 223 by the first rib 240, so that the airflow will be blocked by the first rib 240 after flowing out of the first air duct 2311, and then flow to the two sides of the main body 210 along the length direction of the first rib 240, or flow to the front side of the main body 210 along the width direction of the first rib 240, so as to avoid the airflow from blowing directly to the circuit board 300 along the first air duct 2311, thereby reducing the entry of dust into the installation area 223 and reducing the risk of failure of the circuit board 300. Figure 5 The direction indicated by the dotted arrow is the direction of air flow.

[0053] Reference Figure 6 As shown, it should be noted that the heat-conducting bracket 220 is connected to the control board 310 and the power board 320 at the same time, and the installation area 223 includes the area covered by the connection between the control board 310 and the power board 320 and the heat-conducting bracket 220. Since the middle part of the heat-conducting bracket 220 is a hollow structure, in the absence of the first rib 240, the airflow can blow toward the control board 310 along the first air duct 2311, and then pass through the hollow structure to blow toward the power board 320, causing the control board 310 and the power board 320 to easily accumulate dust. Therefore, the embodiment of the utility model can block the airflow of the first air duct 2311 from blowing directly toward the installation area 223 through the first rib 240, thereby reducing the dust from entering the control board 310 and the power board 320, effectively reducing the accumulation of dust, reducing the risk of failure of the control board 310 and the power board 320, and improving the reliability of the operation of the driver 1000.

[0054] Reference Figure 4 and Figure 5 As shown, it can be understood that in the embodiment, the height of the first rib 240 is set greater than or equal to the height of the first fin 231, so that the first air duct 2311 defined by the first fin 231 will not be higher than the height of the first rib 240, so that the first rib 240 can effectively block the airflow of the first air duct 2311 from blowing directly to the installation area 223, wherein the height of the first rib 240 and the height of the first fin 231 can be understood as the height protruding from the first surface 2101.

[0055] It should be noted that the first rib 240 and the heat dissipation fins 230 are both integrally formed with the main body 210. The first rib 240 not only has the function of blocking dust and other debris from entering the installation area 223, but can also serve as a long heat dissipation fin. The heat of the main body 210 can be transferred to the first rib 240, and the air flow can dissipate the heat when passing through the first rib 240, thereby improving the heat dissipation efficiency.

[0056] Reference Figure 4and Figure 5 As shown, in some embodiments, along the length direction of the first rib 240, the outer contour line of the first rib 240 is wavy, and the length direction of the first rib 240 is the left and right direction of the main body 210. By setting the first rib 240 to be wavy, relative to the straight rib structure, it is beneficial to increase the heat dissipation area of ​​the first rib 240 and improve the heat dissipation performance. Figure 5 In the illustrated embodiment, the contour line of the first rib 240 is an arc curve, specifically an arc-shaped wavy contour line, and when the airflow flows along the first rib 240 to the two sides of the main body 210, the arc-shaped wavy contour line is conducive to reducing wind resistance. In other embodiments, the contour line of the first rib 240 can also be a toothed wave shape to further increase the heat dissipation area.

[0057] Reference Figure 4 , Figure 5 and Figure 6 As shown, the first surface 2101 of the main body 210 is provided with a second connection column 250, and the fan 400 is provided with a connection hole 420. The second connection column 250 is inserted into the connection hole 420 to fix the fan 400. Specifically, there are four second connection columns 250, and the four second connection columns 250 are distributed in two rows and two columns. The fan 400 is provided with four connection holes 420, and the four connection holes 420 are distributed at the four corners of the fan 400. The four second connection columns 250 are connected to the four connection holes 420 in a one-to-one correspondence, so that the fan 400 can be supported more stably, and the installation structure is stable and reliable.

[0058] In the embodiment, the second connecting column 250 and the connecting hole 420 are fixed by interference fit. When assembling, it is only necessary to insert the four second connecting columns 250 into the four connecting holes 420 respectively and press them tightly to complete the assembly. No additional screws are required for fixing, and the installation is convenient and quick. It should be noted that the second connecting column 250 can be connected to the heat dissipation fin 230, which is conducive to improving the structural strength of the second connecting column 250 and making the installation structure of the fan 400 more reliable. For example, the two second connecting columns 250 on the upper side are connected to the first fin 231, and the two second connecting columns 250 on the lower side are connected to the second fin 232.

[0059] Reference Figure 6 and Figure 7As shown, the power board 320 is provided with two bus capacitors 321, and the two bus capacitors 321 are arranged on the side of the power board 320 facing the main body 210. The left and right sides of the main body 210 are respectively provided with gaps 260 for avoiding the bus capacitors 321, so that the bus capacitors 321 and the main body 210 will not interfere with each other, and the installation structure is more compact, reducing the installation space. It can be understood that the plurality of second fins 232 are arranged along the left and right directions of the main body 210, and the second air ducts 2321 are defined between the adjacent second fins 232. Through the plurality of second air ducts 2321, air can be respectively supplied toward the two sides of the main body 210, so that the second air ducts 2321 can not only dissipate heat for the second fins 232, but also dissipate heat for the two bus capacitors 321, and have a better heat dissipation effect.

[0060] Reference Figure 7 As shown, it can be understood that, since the wiring harness of the fan 400 needs to be led out from the installation position of the fan 400 to the right side of the main body 210 for routing 430, the main body 210 in the embodiment is further provided with a second rib 270, and the second rib 270 is arranged at a position close to the notch 260 on the first surface 2101, and the wiring 430 of the fan 400 is separated from the notch 260 on the right side by the second rib 270, as shown in FIG. Figure 7 The wiring harness shown is led out from the fan 400 and routed 430 from the upper side of the second rib 270. The second rib 270 serves to fix the wiring 430, so that the wiring 430 is not easily in contact with the bus capacitor 321, making the wiring 430 of the fan 400 wiring harness reasonable and in compliance with safety regulations, thereby reducing the risk of failure of the driver 1000.

[0061] Of course, the wiring harness of the fan 400 can also be routed 430 toward the left side of the main body 210. In this case, the second rib 270 can be set at a position close to the left notch 260 to prevent the wiring 430 of the fan 400 from contacting the bus capacitor 321 on the left side.

[0062] Reference Figure 4 and Figure 5 As shown, the main body 210 includes a connecting plate 211, and the main body 210 and the heat-conducting bracket 220 can be supported by the connecting plate 211. In addition, a card slot 130 is provided at the bottom of the housing 100, and the connecting plate 211 can be inserted into the card slot 130 for card connection during assembly, so as to facilitate the connection of the radiator 200 with the housing 100.

[0063] Reference Figure 1As shown, it can be understood that the connecting plate 211 is located at the bottom of the shell 100, which is convenient for supporting the entire driver 1000 so that the driver 1000 can be placed in a vertical direction. The front side of the shell 100 is provided with an air inlet 110, and the left and right sides of the shell 100 are respectively provided with air outlets 120. The air inlet 110 is arranged opposite to the inlet 410 of the fan 400. It can be understood that the airflow flowing out of the first air duct 2311 is blocked by the first rib 240 and will flow along the first rib 240 to the two sides of the main body 210, and be discharged from the air outlet 120 on both sides of the shell 100; in addition, the airflow of the second air duct 2321 flows along the two sides of the main body 210 to the bus capacitor 321, and is discharged from the air outlet 120 on both sides after passing through the bus capacitor 321, so that the airflows of the first air duct 2311 and the second air duct 2321 can smoothly take away the heat, provide a better heat dissipation effect for the entire radiator 200, and improve the heat dissipation performance of the driver 1000.

[0064] Reference Figure 8 As shown, the upper end of the power board 320 is connected to the heat-conducting bracket 220, the lower end of the power board 320 is connected to the main body 210, and the upper and lower ends of the board body of the power board 320 are respectively provided with through holes 322. The back of the heat-conducting bracket 220 is provided with a first connecting column 224, the upper end of the connecting plate 211 of the main body 210 is provided with a boss, and the boss is provided with a screw hole 2111. The upper end of the power board 320 is connected to the first connecting column 224 by screws passing through the through holes 322, and the lower end of the power board 320 is fixed by screws passing through the through holes 322 and the screw holes 2111.

[0065] Since the power board 320 is relatively large and is placed in the vertical direction, it is difficult to position the screw hole 2111 and the through hole 322 of the power board 320 during installation. Based on this, in this embodiment, the through hole 322 at the lower end of the power board 320 is set at the corner position, and the back of the main body 210 is provided with a third rib 212, which is arranged along the circumference of the screw hole 2111 to form a limiting structure. The corner is positioned by the limiting structure. After the corner is positioned, the screw hole 2111 and the through hole 322 can correspond to each other, which is convenient for screwing and fixing. It should be noted that the corners on the left and right sides of the lower end of the power board 320 are respectively provided with through holes 322, and the back of the main body 210 is provided with two screw holes 2111, and each screw hole 2111 is respectively provided with a limiting structure to meet the positioning of the left and right ends of the power board 320.

[0066] Reference Fig. 9As shown, the limiting structure on the left side of the main body 210 is used as an example for explanation. The limiting structure includes a vertical rib 2121 and a transverse rib 2122. The vertical rib 2121 is arranged in the vertical direction, and the transverse rib 2122 is arranged in the horizontal direction. The vertical rib 2121 and the transverse rib 2122 are connected and perpendicular to each other. The limiting structure matches the corner. In the embodiment, the spacing distance between the vertical rib 2121 and the transverse rib 2122 and the screw hole 2111 is approximately 0.1 mm. When the corner of the power board 320 is close to the limiting structure, the vertical rib 2121 abuts against the vertical edge of the corner, and the transverse rib 2122 abuts against the horizontal edge of the corner, so that the corner of the power board 320 is positioned, so that the through hole 322 corresponds to the screw hole 2111, which is convenient for the screw to pass through the through hole 322 and the screw hole 2111 in sequence for assembly, avoiding inaccurate positioning of the through hole 322 and the screw hole 2111 and reducing the assembly efficiency.

[0067] The embodiment of the second aspect of the utility model further provides a motor drive system, including the driver 1000 of the embodiment of the first aspect above, the driver 1000 can be used to drive one or more motors, and the motor drive system can be a servo system of a robot, or a servo system of an industrial device. The robot is a movable robot, such as a transport robot, etc. The driver 1000 can control the operation of the drive motor, thereby being able to drive the robot to move. The robot can also be a mechanical arm, and each joint of the mechanical arm is provided with a motor for driving the mechanical arm to move. The driver 1000 drives the mechanical arm to move by driving the motor.

[0068] The industrial equipment may be production equipment such as a machine tool, the operating mechanism of the machine tool is powered by a plurality of motors, and the plurality of motors are driven by the driver 1000 to drive the operating mechanism to move in a plurality of directions.

[0069] Since the motor drive system adopts the driver 1000 described above, the motor drive system has all the beneficial effects of the driver 1000 of the above embodiment.

[0070] Of course, the present invention is not limited to the above-mentioned embodiments, and technicians familiar with the field may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A driver, characterized in that: include: A heat sink, comprising a main body and a heat-conducting bracket, wherein the main body is provided with a plurality of heat-dissipating fins, the plurality of heat-dissipating fins define a plurality of air ducts on a first side of the heat sink, and the heat-conducting bracket is provided at an edge of the main body; A control board, connected to the heat-conducting bracket and located on a first side of the heat sink; A fan connected to a side of the main body facing the heat dissipation fins, wherein an outlet of the fan is in communication with the air duct; A first rib is provided on one side of the main body close to the heat-conducting bracket. The first rib is arranged along the edge of the main body and is configured to separate the air duct from the control board in the installation area of ​​the heat-conducting bracket.

2. The driver according to claim 1, characterized in that: The driver further comprises: The power board is connected to the heat-conducting bracket and the main body and is located on the second side of the heat sink.

3. The driver according to claim 2, characterized in that: The plurality of heat dissipation fins include a plurality of first fins and a plurality of second fins, the plurality of first fins are radially distributed along the direction of the main body toward the heat-conducting bracket, a first air duct is defined between adjacent first fins, a plurality of second fins are distributed at one end of the first air duct away from the heat-conducting bracket, and a plurality of second air ducts connected to the first air duct are defined, the first rib is located between the air outlet end of the first air duct and the heat-conducting bracket, the fan is at least partially located in the distribution area of ​​the second fins, the outlet of the fan is arranged toward the first side of the radiator, and the first air duct and the second air duct are respectively connected to the outlet of the fan.

4. The driver according to claim 1 or 3, characterized in that: Along the length direction of the first rib, the outer contour line of the first rib is wavy.

5. The driver according to claim 3, characterized in that: A bus capacitor is provided on the side of the power board facing the main body, and the main body is provided with a notch to avoid the bus capacitor; along the direction of the main body away from the heat-conducting bracket, a plurality of second fins are arranged in parallel, and the second air duct is defined between adjacent second fins, and the second air duct is arranged toward the bus capacitor.

6. The driver according to claim 2, characterized in that: One end of the power board is connected to the heat-conducting bracket, and a through hole is provided at the corner of the other end; a screw hole and a third rib are provided at one end of the main body away from the heat-conducting bracket, and the third rib is arranged along the circumference of the screw hole and is constructed to position the corner so that the through hole corresponds to the screw hole.

7. The driver according to claim 5, characterized in that: The main body is further provided with a second rib, which is arranged at a position close to the notch on the first side of the heat sink, and the second rib is configured to separate the wiring of the fan from the notch.

8. The driver according to claim 5, characterized in that: The driver also includes a shell, the radiator, the control board, the power board and the fan are respectively arranged in the shell, the shell is provided with an air inlet and an air outlet, the air inlet is located at one end surface of the shell and is connected to the inlet of the fan, and the air outlet is provided with two and is respectively located on both sides of the shell along a direction perpendicular to the main body toward the heat-conducting bracket.

9. The driver according to claim 1, characterized in that: The first side of the radiator is provided with a plurality of connection columns arranged at intervals, the fan is provided with a plurality of connection holes, and the plurality of connection columns correspond to the plurality of connection holes one by one and are connected by interference fit.

10. A motor drive system, characterized in that: The driver comprises the driver according to any one of claims 1 to 9.

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