Motor drivers, motor drive systems and placement machines

Abstract

The present invention discloses a motor driver, a motor drive system and a chip mounter, wherein the motor driver comprises a housing, a fan and a heat dissipation assembly, wherein the housing has a housing cavity and an air inlet and an air outlet connected to the housing cavity, wherein the fan is arranged in the housing cavity, wherein the fan has a fan inlet and a fan outlet, wherein the fan inlet is connected to the air inlet, wherein the heat dissipation assembly is arranged in the housing cavity, wherein the heat dissipation assembly comprises a plurality of first fins and a plurality of second fins, wherein the plurality of first fins are radially annularly distributed, wherein the second fins are arranged on the outside of the first fins, wherein the plurality of first fins define a plurality of first air ducts, wherein the plurality of second fins define a plurality of second air ducts, wherein the first air duct is connected to the fan outlet, and wherein the second air duct is connected to the first air duct. The motor driver of the embodiment of the present invention has the advantages of long service life and high reliability.

Description

Technical Field

[0001] The present invention relates to the technical field of motor drive control, and in particular to a motor driver, a motor drive system and a chip mounter. Background Art

[0002] The motor is generally driven by a motor driver, which includes a housing, a power board, a control board, a rectifier module and a filter module, and the power board, the control board, the rectifier module and the filter module are all arranged in the housing. The motor driver in the related art mainly dissipates heat through air cooling, and the motor driver in the related art has the problem of poor heat dissipation effect. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, an embodiment of the present invention provides a motor driver to improve the reliability of the motor driver.

[0005] The embodiments of the present invention further provide a motor drive system to improve the reliability of the motor drive system.

[0006] The embodiment of the present invention further provides a chip mounter to improve the reliability of the chip mounter.

[0007] The motor driver of the embodiment of the present invention includes a shell, a fan and a heat dissipation component, the shell has a accommodating cavity and an air inlet and an air outlet connected to the accommodating cavity; the fan is arranged in the accommodating cavity, the fan has a fan inlet and a fan outlet, and the fan inlet is connected to the air inlet; the heat dissipation component is arranged in the accommodating cavity, the heat dissipation component includes a plurality of first fins and a plurality of second fins, the plurality of first fins are radially distributed in a ring shape, the second fins are arranged on the outside of the first fins, the plurality of first fins define a plurality of first air ducts, the plurality of second fins define a plurality of second air ducts, the first air duct is connected to the fan outlet, and the second air duct is connected to the first air duct.

[0008] Therefore, the motor driver according to the embodiment of the present invention has the advantages of long service life and high reliability.

[0009] In some embodiments, the heat dissipation assembly includes a substrate, the substrate is disposed in the accommodating cavity, the substrate is connected to the shell, and the first fin and the second fin are both disposed on the upper surface of the substrate.

[0010] In some embodiments, the motor driver includes a first element and a second element, the first element and the second element are both disposed in the accommodating cavity, the first element is disposed on the lower surface of the substrate, and the second element is disposed below the substrate.

[0011] In some embodiments, the substrate includes a first part, a second part and a middle part, the second part is arranged higher than the first part, the first fin is arranged on the upper surface of the first part, the second fin is arranged on the upper surface of the second part, the first element is arranged on the lower surface of the first part, and the second element is arranged below the second part; one end of the middle part is connected to the first part, and the other end of the middle part is connected to the second part, and the middle part has a flow hole connected to the first air duct.

[0012] In some embodiments, the heat dissipation assembly includes a plurality of third fins, wherein the third fins are arranged on the outside of the first fins, the third fins and the second fins are arranged on different sides of the first fins, a plurality of third air ducts are defined between the plurality of third fins, and the third air ducts are connected to the first air ducts.

[0013] In some embodiments, the shell includes a first side panel and a third side panel, the first side panel is arranged above the heat dissipation component, and the air inlet is arranged on the first side panel; the third side panel is arranged on one side in the width direction of the heat dissipation component, and the third fin is arranged closer to the third side panel than the first fin in the width direction of the heat dissipation component, the air outlet includes a second air outlet, the second air outlet is arranged on the third side panel, and the third air duct extends outward to the second air outlet.

[0014] In some embodiments, at least a portion of the first fin extends outward into the third air duct.

[0015] In some embodiments, the motor driver includes a control board, and the control board is disposed in the accommodating cavity, and at least a portion of the outlet of the first air duct faces the control board.

[0016] In some embodiments, the heat dissipation assembly includes a plurality of fourth fins, the fourth fins are arranged on the outside of the first fins, the second fins and the fourth fins are arranged on different sides of the first fins, a plurality of fourth air ducts are defined between the plurality of fourth fins, the fourth air ducts are connected to the first air ducts, and the outlets of the fourth air ducts face the control panel.

[0017] In some embodiments, at least a portion of the first fin extends outward into the fourth air duct.

[0018] In some embodiments, the motor driver includes a first capacitor, a side of the control board adjacent to the first fin has a second avoidance opening, and a portion of the first capacitor is located in the second avoidance opening.

[0019] In some embodiments, the first fin is a rectangular plate, and the first fin extends from the center to the periphery of the ring. A plurality of the first fins are arranged at intervals along the circumference of the ring, and a first air duct is defined between two adjacent first fins.

[0020] In some embodiments, the second fin is a rectangular plate, and the second fin extends in a direction away from the first fin.

[0021] In some embodiments, a plurality of the second fins are parallel to each other and arranged at intervals, and a second air duct is defined between two adjacent second fins.

[0022] In some embodiments, the third fin is a rectangular plate, and the third fin extends in a direction away from the first fin.

[0023] In some embodiments, a plurality of the third fins are arranged at intervals along the circumferential direction of the ring, and a third air duct is defined between two adjacent third fins.

[0024] In some embodiments, at least a portion of the plurality of third air ducts extend in different directions.

[0025] In some embodiments, the fourth fin is a rectangular plate, and the fourth fin extends in a direction away from the first fin.

[0026] In some embodiments, a plurality of the fourth fins are arranged at intervals along the circumferential direction of the ring, and a fourth air duct is defined between two adjacent fourth fins.

[0027] In some embodiments, at least a portion of the plurality of fourth air ducts extend in different directions.

[0028] In some embodiments, the motor driver includes a second capacitor, which is disposed in the accommodating cavity, the substrate has a first avoidance opening, a portion of the second capacitor is located in the first avoidance opening, the outlet of the second air duct faces the second capacitor, and the second capacitor is disposed on the outside of the second element.

[0029] In some embodiments, the shell includes a first side panel and a fourth side panel, the first side panel is arranged above the heat dissipation component, and the air inlet is arranged on the first side panel; the fourth side panel is arranged on one side in the width direction of the heat dissipation component, and the second fin is arranged closer to the fourth side panel than the first fin in the width direction of the heat dissipation component, the air outlet includes a first air outlet, the first air outlet is arranged on the fourth side panel, the second air duct extends along the width direction of the heat dissipation component, and the outlet of the second air duct is arranged corresponding to the first air outlet in the width direction of the heat dissipation component.

[0030] In some embodiments, the fan is located below the first side panel, the fan inlet and the fan outlet are arranged relative to each other in the up and down directions, the fan outlet is located below the fan inlet, the fan inlet is located below the air inlet so that the fan inlet is connected to the air inlet, and the first fin is located below the fan outlet so that the first air duct is connected to the fan outlet.

[0031] In some embodiments, a plurality of the first fins are formed with a recessed portion, and at least a portion of the fan is disposed in the recessed portion.

[0032] In some embodiments, the heat dissipation assembly includes a connecting plate, which is connected to the substrate, a clip is provided on one of the shell and the connecting plate, and a slot is provided on the other of the shell and the connecting plate, and the clip is snap-fitted with the slot so that the substrate is connected to the shell.

[0033] The motor drive system of the embodiment of the present invention includes a motor and a motor driver, wherein the motor driver is connected to the motor so as to drive the motor to operate, and the motor driver is the motor driver described in any one of the above embodiments.

[0034] Therefore, the motor drive system according to the embodiment of the present invention has the advantages of long service life and high reliability.

[0035] The chip mounting machine of the embodiment of the present invention includes a chip mounting device and a motor drive system, wherein the motor drive system is connected to the chip mounting device so as to drive the chip mounting device to move, and the motor drive system is the motor drive system described in any one of the above embodiments.

[0036] Therefore, the chip mounter according to the embodiment of the present invention has the advantages of long service life and high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 is a perspective view of a motor driver according to an embodiment of the present invention.

[0038] Figure 2is a top view of a motor driver according to an embodiment of the present invention.

[0039] Figure 3 yes Figure 2 The structural schematic diagram of the first side panel is hidden.

[0040] Figure 4 yes Figure 2 The schematic diagram of the structure of the shell is hidden.

[0041] Figure 5 yes Figure 4 main view.

[0042] Figure 6 yes Figure 3 Three-dimensional view of the radiator.

[0043] Figure 7 yes Figure 3 A three-dimensional image of the radiator from another perspective.

[0044] Figure 8 yes Figure 3 Front view of the radiator.

[0045] Reference numerals:

[0046] Motor driver 100;

[0047] Shell 1; first side plate 101; air inlet 1011; air outlet 102; fourth side plate 103; first air outlet 1031; third side plate 104; second air outlet 1041;

[0048] Heat dissipation assembly 2; substrate 201; first portion 2013; second portion 2014; first avoidance opening 20141; middle portion 2015; flow hole 20151; first fin 202; first connecting column 2022; recessed portion 2023; first fastener 2024; first air duct 2025; second fin 203; second air duct 2031; third fin 204; third air duct 2041; connecting plate 205; buckle 2051; mounting frame 206; first mounting portion 2061; second connecting column 2062; second fastener 2063; second mounting portion 2064; third connecting column 2065; third fastener 2066; fourth fin 207; fourth air duct 2071;

[0049] Fan 3; fan inlet 301; fan outlet 302;

[0050] Control panel 4; second avoidance opening 401;

[0051] The second capacitor 5;

[0052] First element 6;

[0053] A first capacitor 7;

[0054] Power board 8. DETAILED DESCRIPTION

[0055] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0056] like Figures 1 to 8 As shown, the motor driver 100 of the embodiment of the present invention includes a housing 1, a fan 3 and a heat dissipation assembly 2. The housing 1 has a receiving cavity and an air inlet 1011 and an air outlet 102 connected to the receiving cavity. The fan 3 is arranged in the receiving cavity, and the fan 3 has a fan inlet 301 and a fan outlet 302, and the fan inlet 301 is connected to the air inlet 1011.

[0057] The heat dissipation assembly 2 is disposed in the accommodating cavity, and includes a plurality of first fins 202 and a plurality of second fins 203. The plurality of first fins 202 are radially distributed in an annular shape, and the second fins 203 are disposed outside the first fins 202. The plurality of first fins 202 define a plurality of first air ducts 2025, and the plurality of second fins 203 define a plurality of second air ducts 2031. The first air duct 2025 is in communication with the fan outlet 302, and the second air duct 2031 is in communication with the first air duct 2025.

[0058] During operation of the motor driver 100 of the embodiment of the present invention, the fan 3 is started and the cooling fluid is introduced into the accommodating cavity by the fan 3. Specifically, the cooling fluid flows into the fan inlet 301 through the air inlet 1011 connected to the accommodating cavity, and flows into the accommodating cavity through the fan outlet 302.

[0059] In the accommodating cavity, the components in the accommodating cavity transfer heat to the heat dissipation assembly 2, and the first fins 202 and the second fins 203 of the heat dissipation assembly 2 conduct heat and heat convection with the cooling fluid, thereby transferring the heat of the components in the accommodating cavity to the cooling fluid. Afterwards, the cooling fluid flows out of the housing 1 from the air outlet 102, taking the heat of the components in the accommodating cavity out of the housing 1, thereby achieving cooling of the components in the accommodating cavity.

[0060] Since the heat dissipation assembly 2 includes not only the first fins 202 distributed in a radial annular shape, but also the second fins 203 arranged outside the first fins 202, the overall effective heat dissipation area of ​​the heat dissipation assembly 2 is large, so that the heat dissipation performance of the heat dissipation assembly 2 is good. The various components of the motor driver 100 work at a suitable temperature, which is conducive to extending the service life of the motor driver 100 and improving the reliability of the motor driver 100.

[0061] Therefore, the motor driver 100 according to the embodiment of the present invention has the advantages of long service life and high reliability.

[0062] Alternatively, the cooling fluid may be air.

[0063] In some embodiments, Figure 6 As shown, the plurality of first fins 202 are formed with a recessed portion 2023 , and at least a portion of the fan 3 is disposed in the recessed portion 2023 .

[0064] For example, Figure 6 As shown, the fan 3 is entirely located in the recess 2023, and the top of the fan 3 is flush with the upper end surface of the second fin 203. Thus, while satisfying the heat dissipation performance of the motor driver 100, the size of the motor driver 100 in the thickness direction can also be reduced, so that the motor driver 100 has a compact structure and a small volume.

[0065] Of course, the fan 3 may also be only partially located in the recessed portion 2023 , that is, the upper end surface of the fan 3 is higher than the upper end surface of the second fin 203 .

[0066] Optionally, a first connecting column 2022 is provided on the first fin 202 , and the fan 3 is connected to the first connecting column 2022 via a first fastener 2024 .

[0067] For example, Figure 6 As shown, the first connecting column 2022 is vertically arranged and provided with four, and the first connecting column 2022 is arranged in two rows and two columns. A first threaded hole is opened on each first connecting column 2022, and a first connecting hole corresponding to the first threaded hole is opened on the fan 3. The first connecting hole is a countersunk hole, and the first fastener 2024 is a countersunk screw. The countersunk screw passes through the first connecting hole and is threadedly connected with the corresponding first threaded hole to realize the connection between the fan 3 and the first fin 202.

[0068] When installing the fan 3, first place the fan 3 on the first fin 202 so that the four first connecting holes on the fan 3 correspond to the four first threaded holes one by one, and then pass the countersunk screws through the first connecting holes and connect them to the first threads, thereby completing the fastening of the fan 3.

[0069] In some embodiments, Figure 6 As shown, the heat dissipation assembly 2 includes a substrate 201, which is disposed in the accommodating cavity, the substrate 201 is connected to the housing 1, and the first fin 202 and the second fin 203 are both disposed on the upper surface of the substrate 201. The motor driver 100 includes a second capacitor 5, which is disposed in the accommodating cavity, the substrate 201 has a first avoidance opening 20141, a part of the second capacitor 5 is located in the first avoidance opening 20141, and the outlet of the second air duct 2031 faces the second capacitor 5.

[0070] On the one hand, a part of the second capacitor 5 is located in the first avoidance opening 20141, so that the structure of the heat dissipation component 2 is compact, which is conducive to reducing the overall volume of the motor driver 100. On the other hand, the outlet of the second air duct 2031 faces the second capacitor 5, so that the cooling fluid flowing out of the second air duct 2031 can flow through the second capacitor 5, and the cooling fluid flowing through the second capacitor 5 performs forced convection with the second capacitor 5, so that part of the heat of the second capacitor 5 is taken out of the housing 1 by the cooling fluid, so as to achieve cooling of the second capacitor 5, which is conducive to further improving the reliability of the motor driver 100.

[0071] Therefore, the motor driver 100 of the embodiment of the present invention can further improve the reliability of the motor driver 100 while satisfying the requirement of compact overall structure of the motor driver 100 .

[0072] In some embodiments, Figure 4 and Figure 7 As shown, the motor driver 100 includes a first element 6 and a second element, both of which are arranged in the accommodating cavity, the first element 6 is arranged on the lower surface of the substrate 201, the second element is arranged below the substrate 201, and the second capacitor 5 is located on the outside of the second element.

[0073] Thus, the first element 6 of the motor driver 100 of the embodiment of the present invention can conduct heat with the substrate 201, and the heat generated by the first element 6 is transferred to the substrate 201, and the heat generated by the first element 6 is transferred to the first fin 202 and the second fin 203 through the substrate 201. Finally, the heat generated by the first element 6 is taken out of the housing 1 by the cooling fluid flowing through the first air duct 2021 and the second air duct 2031, so as to cool the first element 6, thereby further improving the reliability of the motor driver 100.

[0074] Optionally, the first component 6 may be a high-power consumption chip such as an IPM module, a rectifier bridge or an IGBT module, and the second component may be a key component such as a diode, a power supply, a capacitor or a resistor.

[0075] In some embodiments, Figure 7 As shown, the substrate 201 includes a first portion 2013, a second portion 2014 and a middle portion 2015. The second portion 2014 is arranged higher than the first portion 2013, the first fin 202 is arranged on the upper surface of the first portion 2013, the second fin 203 is arranged on the upper surface of the second portion 2014, the first element 6 is arranged on the lower surface of the first portion 2013, and the second element is arranged below the second portion 2014. One end of the middle portion 2015 is connected to the first portion 2013, and the other end of the middle portion 2015 is connected to the second portion 2014. The middle portion 2015 has a flow hole 20151 connected to the first air duct 2025.

[0076] The flow hole 20151 is connected to the first air duct 2025, so that a part of the cooling fluid flowing out from the outlet of the first air duct 2025 can flow out through the flow hole 20151 and blow directly to the second element. The cooling fluid flowing out of the first air duct 2025 is directly forced to convect with the second element, and the heat of the second element is brought out of the shell 1 by the cooling fluid blown to the second element, which is beneficial to improve the heat dissipation performance of the second element, reduce the temperature of the second element, and help to further improve the reliability of the motor driver 100.

[0077] Alternatively, if Figure 7 As shown, the first avoidance opening 20141 of the motor driver 100 of the embodiment of the present invention is arranged on the second part 2014, and the second element is arranged below the second part 2014, so that the space of the accommodating cavity is fully utilized to arrange the elements, so that the overall layout structure of the motor driver 100 is compact, and the overall volume of the motor driver 100 is small. A part of the cooling fluid flowing out of the outlet of the first air duct 2025 can flow out through the flow hole 20151 and blow directly to the second capacitor 5 located in the first avoidance opening 20141, so that the cooling fluid and the second capacitor 5 can perform thermal convection, thereby cooling the second capacitor 5 more effectively, which is conducive to further improving the reliability of the motor driver 100.

[0078] Optionally, the first fin 202 is a rectangular plate, and the first fin 202 extends from the center to the periphery of the ring.

[0079] Therefore, the first fin 202 has a simple structure and is convenient to design and process.

[0080] Optionally, a plurality of first fins 202 are arranged at intervals along the circumferential direction of a ring, and a first air duct 2025 is defined between two adjacent first fins 202 .

[0081] Optionally, the second fin 203 is a rectangular plate, and the second fin 203 extends in a direction away from the first fin 202 .

[0082] Therefore, the second fin 203 has a simple structure and is convenient to design and process.

[0083] Optionally, the plurality of second fins 203 are parallel to each other and arranged at intervals, and a second air duct 2031 is defined between two adjacent second fins 203 .

[0084] For example, Figure 3 As shown, the plurality of second air ducts 2031 are parallel to each other and all face the first air outlet 1031 .

[0085] Therefore, the cooling fluid flowing through the second air duct 2031 can flow out quickly, which is beneficial to further improve the heat dissipation effect of the motor driver 100 .

[0086] In some embodiments, the housing 1 includes a first side plate 101 and a fourth side plate 103. The first side plate 101 is disposed above the heat dissipation assembly 2, the air inlet 1011 is disposed on the first side plate 101, and the fourth side plate 103 is disposed on one side in the width direction of the heat dissipation assembly 2. The second fin 203 is disposed closer to the fourth side plate 103 than the first fin 202 in the width direction of the heat dissipation assembly 2. The air outlet 102 includes a first air outlet 1031 and an air outlet 102, and the first air outlet 1031 and the air outlet 102 are disposed on the fourth side plate 103. The second air duct 2031 extends along the width direction of the heat dissipation assembly 2, and the outlet of the second air duct 2031 is disposed corresponding to the first air outlet 1031 in the width direction of the heat dissipation assembly 2.

[0087] In order to make the technical solution of the present application easier to understand, the following takes the width direction of the heat dissipation component 2 as being consistent with the left-right direction, the length direction of the heat dissipation component 2 as being consistent with the front-back direction, and the thickness direction of the heat dissipation component 2 as being consistent with the up-down direction as an example to further describe the technical solution of the present application, wherein the left-right direction, the up-down direction, and the front-back direction are as follows: Figure 4 shown.

[0088] For example, Figure 1 , Figure 2 , Figure 4 and Figure 6 As shown, the first side plate 101 is located above the heat dissipation assembly 2, the air inlet 1011 is provided on the first side plate 101, and the fan 3 is located directly below the air inlet 1011. The fan inlet 301 and the fan outlet 302 of the fan 3 are arranged opposite to each other in the up-down direction, and the fan outlet 302 is located below the fan inlet 301. The fan inlet 301 is located directly below the air inlet 1011, so that the fan inlet 301 communicates with the air inlet 1011, and the first fin 202 is located directly below the fan outlet 302, so that the first air duct 2025 communicates with the fan outlet 302. Thus, the cooling fluid is made to quickly enter the first air duct 2025 through the air inlet 1011, the fan inlet 301 and the fan outlet 302 by using the fan 3.

[0089] The first element 6 is located directly below the first fin 202 and is mounted on the lower surface of the base plate 201. The fourth side plate 103 is located on the left side of the heat dissipation assembly 2, and the second fin 203 is located on the left side of the first fin 202, so that the air outlet 102 of the second air duct 2031 is close to the first air outlet 1031, thereby ensuring that the cooling fluid has a heat dissipation effect on the second capacitor 5, while facilitating the cooling fluid flowing through the second capacitor 5 to quickly flow out from the first air outlet 1031, which is beneficial to improving the heat dissipation effect on the second capacitor 5.

[0090] Optionally, the extension directions of the plurality of second fins 203 are the same, and all extend along the width direction of the heat dissipation assembly 2 , so that the cooling fluid flowing through the second capacitor 5 can quickly flow out from the first air outlet 1031 , thereby further improving the heat dissipation effect on the second capacitor 5 .

[0091] The housing 1 further includes a second side plate (not shown in the figure). The second side plate is arranged below the heat dissipation assembly 2 .

[0092] In some embodiments, Figure 6 and Figure 8 As shown, the heat dissipation assembly 2 includes a plurality of third fins 204, and the third fins 204 are arranged outside the first fins 202. The third fins 204 and the second fins 203 are arranged on different sides of the first fins 202, and a plurality of third air ducts 2041 are defined between the plurality of third fins 204, and the third air ducts 2041 are connected to the first air duct 2025.

[0093] For example, Figure 8 As shown, the second fin 203 is arranged on the left side of the first fin 202, and the third fin 204 is arranged on the right side of the first fin 202. After the cooling fluid enters the accommodating cavity, a part of the cooling fluid flows to the left into the second air duct 2031 through the first air duct 2025, and the cooling fluid cools the second capacitor 5 and the second element and then flows out of the housing 1 through the first air outlet 1031. Another part of the cooling fluid flows to the right into the third air duct 2041 through the first air duct 2025, and then flows out through the air outlet 102.

[0094] The motor driver 100 of the embodiment of the present invention dissipates heat by utilizing the first fin 202, the second fin 203 and the third fin 204 to transfer heat to the cooling fluid in the first air duct 2025, the second air duct 2031 and the third air duct 2041 and flows out of the shell 1 through the air outlet 102, so that the heat dissipation area of ​​the heat dissipation component 2 is larger, thereby further improving the heat dissipation of the heat dissipation component 2, and the heat dissipation performance of the motor driver 100 is better.

[0095] In some embodiments, Figure 6 Figure 8 As shown, the housing 1 includes a first side plate 101 and a third side plate 104. The first side plate 101 is arranged above the heat dissipation assembly 2, the air inlet 1011 is arranged on the first side plate 101, and the third side plate 104 is arranged on one side in the width direction of the heat dissipation assembly 2. The third fin 204 is arranged closer to the third side plate 104 than the first fin 202 in the width direction of the heat dissipation assembly 2. The air outlet 102 includes a second air outlet 1041, the second air outlet 1041 is arranged on the third side plate 104, and the third air duct 2041 extends outward to the second air outlet 1041.

[0096] For example, Figure 6 Figure 8 As shown, the third fin 204 is arranged on the right side of the first fin 202, the third side plate 104 is arranged on the right side of the heat dissipation assembly 2, and the third air duct 2041 is arranged near the second air outlet 1041. The cooling fluid flows into the third air duct 2041 through the first air duct 2025, and after the heat of the third fin 204 is transferred to the cooling fluid in the third air duct 2041, the cooling fluid flows out through the second air outlet 1041.

[0097] The motor driver 100 of the embodiment of the present invention not only increases the heat dissipation area by utilizing the third fin 204, but also facilitates the cooling fluid flowing through the third fin 204 to quickly flow out from the second air outlet 1041, thereby improving the heat dissipation efficiency of the heat dissipation component 2, thereby making the heat dissipation performance of the motor driver 100 better.

[0098] Optionally, the extension directions of the multiple third air ducts 2041 are different, so that the cooling fluid flowing into the third air duct 2041 can quickly flow out of the shell 1 from the second air outlet 1041, which is beneficial to further improve the heat dissipation efficiency of the motor driver 100 and improve the reliability of the motor driver 100.

[0099] Optionally, at least a portion of the first fins 202 extend outward into the third air duct 2041 to increase the effective heat dissipation area of ​​the heat dissipation assembly 2, thereby further improving the heat dissipation efficiency of the motor driver 100 and improving the reliability of the motor driver 100.

[0100] Optionally, at least a portion of the first fins 202 extend outward to the third side plate 104 to further increase the effective heat dissipation area of ​​the heat dissipation assembly 2 , thereby further improving the heat dissipation efficiency of the motor driver 100 and improving the reliability of the motor driver 100 .

[0101] In some embodiments, Figure 4 As shown, the motor driver 100 includes a control board 4, which is arranged in the accommodating cavity, and at least a portion of the outlet of the first air duct 2025 is facing the control board 4, so that the cooling fluid flows to the control board 4 through the first air duct 2025, and cools the control board 4, thereby improving the reliability of the control board 4, thereby further improving the reliability of the motor driver 100.

[0102] Optionally, the plurality of third fins 204 are rectangular plates, and the third fins 204 extend in a direction away from the first fins 202 .

[0103] Therefore, the third fin 204 has a simple structure and is convenient to design and process.

[0104] Optionally, a plurality of third fins 204 are arranged at intervals along the circumferential direction of a ring, and a third air duct 2041 is defined between two adjacent third fins 204 .

[0105] Optionally, the motor driver 100 includes a first capacitor 7 , and a side of the control board 4 adjacent to the first fin 202 has a second avoidance opening 401 , and a portion of the first capacitor 7 is located in the second avoidance opening 401 .

[0106] For example, Figure 4 As shown, the control board 4 is arranged in front of the first fin 202, and the second avoidance port 401 is located between the control board 4 and the first fin 202, so that a portion of the outlet of the first air duct 2025 is directed toward the first capacitor 7, so that the cooling fluid flows out of the outlet of the first air duct 2025 to cool the first capacitor 7.

[0107] In addition, a part of the first capacitor 7 is located in the second avoidance opening 401, which, on the one hand, makes the structure of the heat dissipation assembly 2 compact, which is beneficial to reducing the overall volume of the motor driver 100. On the other hand, the outlet of the first air duct 2025 faces the first capacitor 7, so that the cooling fluid flowing out of the first air duct 2025 can flow through the first capacitor 7, and the cooling fluid flowing through the first capacitor 7 performs heat convection with the first capacitor 7, so that part of the heat of the first capacitor 7 is taken out of the housing 1 by the cooling fluid, so as to achieve cooling of the first capacitor 7, which is beneficial to further improve the reliability of the motor driver 100.

[0108] Therefore, the motor driver 100 of the embodiment of the present invention can further improve the reliability of the motor driver 100 while satisfying the requirement of compact overall structure of the motor driver 100 .

[0109] Alternatively, if Figure 6 As shown, the heat dissipation assembly 2 includes a plurality of fourth fins 207, and the fourth fins 207 are arranged on the outside of the first fins 202. The second fins 203 and the fourth fins 207 are arranged on different sides of the first fins 202, and a plurality of fourth air ducts 2071 are defined between the plurality of fourth fins 207, and the fourth air ducts 2071 are connected to the first air duct 2025, and the outlet of the fourth air duct 2071 faces the control board 4.

[0110] For example, Figure 6 As shown, the second fin 203 is arranged on the left side of the first fin 202, and the fourth fin 207 is arranged on the front side of the first fin 202. The cooling fluid flows forward through the first air duct 2025 into the fourth air duct 2071, and the cooling fluid blows toward the first capacitor 7 and the control board 4 through the fourth air duct 2071. The heat generated by the first capacitor 7 and the control board 4 is transferred to the cooling fluid through thermal convection and then flows out of the housing 1 through the air outlet 102, thereby reducing the temperature of the control board 4 and the first capacitor 7. In addition, the motor driver 100 of the embodiment of the present invention further increases the effective heat dissipation area of ​​the heat dissipation assembly 2 by providing a plurality of fourth fins 207, which is conducive to further improving the heat dissipation performance of the motor driver 100 and improving the reliability of the motor driver 100.

[0111] Optionally, the extension directions of the plurality of fourth air ducts 2071 are all different, so that the cooling fluid flowing through the fourth air ducts 2071 can quickly flow out of the housing 1, thereby further improving the heat dissipation efficiency of the motor driver 100 and improving the reliability of the motor driver 100.

[0112] Optionally, at least a portion of the first fin 202 extends outward into the fourth air duct 2071. In other words, the first fin 202 can extend to the entire fourth air duct 2071, thereby increasing the effective heat dissipation area of ​​the heat dissipation assembly 2, thereby improving the heat dissipation efficiency of the heat dissipation assembly 2, and further improving the heat dissipation efficiency of the motor driver 100, thereby improving the reliability of the motor driver 100.

[0113] Optionally, the plurality of fourth fins 207 are rectangular plates, and the fourth fins 207 extend in a direction away from the first fins 202 .

[0114] Therefore, the fourth fin 207 has a simple structure and is convenient to design and process.

[0115] Optionally, a plurality of fourth fins 207 are arranged at intervals along the circumferential direction of a ring, and a fourth air duct 2071 is defined between two adjacent fourth fins 207 .

[0116] In some embodiments, Figure 7 and Figure 8 As shown, the heat dissipation assembly 2 includes a connecting plate 205, which is connected to the substrate 201. A buckle 2051 is provided on one of the housing 1 and the connecting plate 205, and a slot is provided on the other of the housing 1 and the connecting plate 205, and the buckle 2051 is engaged with the slot.

[0117] For example, Figure 7 and Figure 8 As shown, the connecting plate 205 extends in the up-down direction, a buckle 2051 is provided on the front end surface of the connecting plate 205, a slot is provided on the housing 1, and the buckle 2051 is engaged with the slot to achieve the connection between the substrate 201 and the housing 1. It is convenient to connect the substrate 201 with the housing 1, which is conducive to improving the assembly efficiency of the motor driver 100.

[0118] Of course, a slot may be provided on the connecting plate 205 , and a buckle 2051 may be provided on the housing 1 .

[0119] Optionally, the connecting plate 205 and the base plate 201 are integrated, which is beneficial to improve the processing efficiency of the motor driver 100. In addition, the connecting plate 205 and the base plate 201 are integrated, which is beneficial to enhance the overall strength of the connecting plate 205 and the base plate 201, thereby further improving the reliability of the motor driver 100.

[0120] Optionally, the first side plate 101, the second side plate, the fourth side plate 103 and the third side plate 104 are an integrated structure, and the first side plate 101, the second side plate, the fourth side plate 103 and the third side plate 104 form a cylindrical structure with openings at both ends. Buckles 2051 are respectively provided on the left and right sides of the connecting plate 205, and slots are respectively provided on the fourth side plate 103 and the third side plate 104. The buckle 2051 on the left side is engaged with the slot on the fourth side plate 103, and the buckle 2051 on the right side is engaged with the slot on the third side plate 104. Thus, the connecting plate 205, the first side plate 101, the second side plate, the fourth side plate 103 and the third side plate 104 define a receiving space.

[0121] like Figures 4 to 5 As shown, the motor driver 100 in the embodiment of the present invention includes a power board 8, and the motor driver 100 in the embodiment of the present invention also includes a power board 8, which is arranged in the accommodation cavity. The second capacitor 5, the first capacitor and the second element are all arranged in the power board 8.

[0122] The motor driver 100 of the embodiment of the present invention includes a mounting frame 206, which is disposed in the accommodating cavity and connected to the substrate 201. The mounting frame 206 has a first mounting portion 2061 and a second mounting portion 2064 which are opposite to each other in the thickness direction of the substrate 201, the control board 4 is disposed on the first mounting portion 2061, and a part of the power board 8 is disposed on the second mounting portion 2064.

[0123] Alternatively, if Figure 7 As shown, the first mounting portion 2061 is the second connecting column 2062, the second mounting portion 2064 is the third connecting column 2065, the control board 4 is connected to the second connecting column 2062 via the second fastener 2063, and the power board 8 is connected to the third connecting column 2065 via the third fastener 2066.

[0124] Specifically, the second fastener 2063 is a second screw, and the third fastener 2066 is a third screw. The control board 4 is provided with a second connection hole, the second connection column 2062 is provided with a second threaded hole, the second screw penetrates the second connection hole and is threadedly connected with the second threaded hole, thereby fixing the control board 4 on the mounting frame 206. The power board 8 is provided with a third connection hole, the third connection column 2065 is provided with a third threaded hole, the third screw penetrates the third connection hole and is threadedly connected with the third threaded hole, thereby fixing the power board 8 on the mounting frame 206.

[0125] For example, Figure 6 As shown, the first mounting portion 2061 is located on the upper surface of the mounting frame 206 , the second mounting portion 2064 is located on the lower surface of the mounting frame 206 , the control board 4 is installed above the mounting frame 206 , and the power board 8 is installed below the mounting frame 206 .

[0126] Alternatively, if Figure 6 As shown, the substrate 201 and the mounting frame 206 are an integrated structure, thereby facilitating the processing and manufacturing of the motor driver 100. In addition, the substrate 201 and the mounting frame 206 are an integrated structure, which is conducive to enhancing the overall strength of the mounting frame 206 and the substrate 201, thereby further improving the reliability of the motor driver 100.

[0127] Optionally, the mounting frame 206 is a mounting frame. On the one hand, the mounting frame 206 is a mounting frame, so that the mounting frame 206 can save materials, reduce weight, and reduce the production cost of the motor driver 100 while meeting the structural strength. On the other hand, the mounting frame 206 is a mounting frame, which facilitates the circulation of cooling fluid on the upper and lower sides of the mounting frame 206, so as to cool more components in the accommodating cavity.

[0128] The motor drive system of the embodiment of the present invention includes a motor and a motor driver, wherein the motor driver is connected to the motor and the motor driver is used to drive the operation of the motor. The motor driver is the motor driver 100 described in any of the above embodiments.

[0129] Therefore, the motor drive system of the embodiment of the present invention has the advantages of long service life and high reliability.

[0130] The chip mounter of the embodiment of the present invention comprises a frame, a chip mount device and a motor drive system, wherein the chip mount device and the motor drive system are both arranged on the frame, the motor drive system is connected to the chip mount device, and the chip mount device is driven to move by the motor drive system. The motor drive system is the motor drive system described in any of the above embodiments.

[0131] Therefore, the chip mounter according to the embodiment of the present invention has the advantages of long service life and high reliability.

[0132] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, 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 should not be understood as limiting the present invention.

[0133] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0134] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0135] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0136] In the present invention, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean 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 present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0137] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A motor driver, characterized in that: include: A housing, the housing having a receiving cavity and an air inlet and an air outlet communicated with the receiving cavity; a fan, the fan being disposed in the accommodating chamber, the fan having a fan inlet and a fan outlet, the fan inlet being communicated with the air inlet; and A heat dissipation component, the heat dissipation component is arranged in the accommodating cavity, the heat dissipation component includes a plurality of first fins and a plurality of second fins, the plurality of first fins are radially distributed in an annular shape, the second fins are arranged outside the first fins, the plurality of first fins define a plurality of first air ducts, the plurality of second fins define a plurality of second air ducts, the first air ducts are communicated with the fan outlet, the second air ducts are communicated with the first air duct, and the plurality of second fins are parallel to each other and arranged at intervals; The heat dissipation assembly includes a substrate, the motor driver includes a first element and a second element, the substrate includes a first part and a second part, the second part is arranged higher than the first part, the first fin is arranged on the upper surface of the first part, the second fin is arranged on the upper surface of the second part, the first element is arranged on the lower surface of the first part, and the second element is arranged below the second part; as well as a middle part, one end of which is connected to the first part, the other end of which is connected to the second part, and the middle part has a flow hole connected to the first air duct; The motor driver includes a second capacitor, which is arranged in the accommodating cavity. The substrate has a first avoidance opening, a part of the second capacitor is located in the first avoidance opening, the outlet of the second air duct faces the second capacitor, and the second capacitor is arranged on the outside of the second element.

2. The motor driver according to claim 1, characterized in that: The base plate is arranged in the accommodating cavity, the base plate is connected to the shell, and the first fin and the second fin are both arranged on the upper surface of the base plate.

3. The motor driver according to claim 2, characterized in that: The first element and the second element are both arranged in the accommodating cavity, the first element is arranged on the lower surface of the substrate, and the second element is arranged below the substrate.

4. The motor driver according to any one of claims 1 to 3, characterized in that: The heat dissipation assembly includes a plurality of third fins, wherein the third fins are arranged on the outside of the first fins, the third fins and the second fins are arranged on different sides of the first fins, a plurality of third air ducts are defined between the plurality of third fins, and the third air ducts are connected to the first air ducts.

5. The motor driver according to claim 4, characterized in that: The housing comprises: a first side plate, the first side plate being disposed above the heat dissipation assembly, and the air inlet being disposed on the first side plate; and A third side plate, wherein the third side plate is arranged on one side in the width direction of the heat dissipation component, the third fin is arranged closer to the third side plate than the first fin in the width direction of the heat dissipation component, the air outlet includes a second air outlet, the second air outlet is arranged on the third side plate, and the third air duct extends outward to the second air outlet.

6. The motor driver according to claim 4, characterized in that: At least a portion of the first fins extends outward into the third air duct.

7. The motor driver according to any one of claims 1 to 3, characterized in that: The motor driver comprises a control board, and the control board is arranged in the accommodating cavity, and at least a part of the outlets of the first air duct are oriented toward the control board.

8. The motor driver according to claim 7, characterized in that: The heat dissipation assembly includes a plurality of fourth fins, wherein the fourth fins are arranged on the outside of the first fins, the second fins and the fourth fins are arranged on different sides of the first fins, and a plurality of fourth air ducts are defined between the plurality of fourth fins. The fourth air ducts are connected to the first air ducts, and the outlets of the fourth air ducts face the control panel.

9. The motor driver according to claim 8, characterized in that: At least a portion of the first fins extends outward into the fourth air duct.

10. The motor driver according to claim 7, characterized in that: The motor driver includes a first capacitor, and a second avoidance opening is provided on a side of the control board adjacent to the first fin, and a portion of the first capacitor is located in the second avoidance opening.

11. The motor driver according to any one of claims 1 to 3, characterized in that: The first fin is a rectangular plate, and the first fin extends from the center to the periphery of the ring.

12. The motor driver according to claim 11, characterized in that: A plurality of the first fins are arranged at intervals along the circumferential direction of the ring shape, and a first air duct is defined between two adjacent first fins.

13. The motor driver according to any one of claims 1 to 3, characterized in that: The second fin is a rectangular plate, and the second fin extends in a direction away from the first fin.

14. The motor driver according to claim 13, characterized in that: A plurality of the second fins are parallel to each other and arranged at intervals, and a second air duct is defined between two adjacent second fins.

15. The motor driver according to claim 4, characterized in that: The third fin is a rectangular plate, and the third fin extends in a direction away from the first fin.

16. The motor driver according to claim 15, characterized in that: The plurality of third fins are arranged at intervals along the circumferential direction of the ring, and a third air duct is defined between two adjacent third fins.

17. The motor driver according to claim 4, characterized in that: The extension directions of at least a portion of the plurality of third air ducts are all different.

18. The motor driver according to claim 8, characterized in that: The fourth fin is a rectangular plate, and the fourth fin extends in a direction away from the first fin.

19. The motor driver according to claim 18, characterized in that: The plurality of fourth fins are arranged at intervals along the circumferential direction of the ring, and a fourth air duct is defined between two adjacent fourth fins.

20. The motor driver according to claim 8, characterized in that: The extension directions of at least a portion of the plurality of fourth air ducts are all different.

21. The motor driver according to any one of claims 2 to 3, characterized in that: The housing comprises: a first side plate, the first side plate being disposed above the heat dissipation assembly, and the air inlet being disposed on the first side plate; and A fourth side plate, the fourth side plate is arranged on one side in the width direction of the heat dissipation component, the second fin is arranged closer to the fourth side plate than the first fin in the width direction of the heat dissipation component, the air outlet includes a first air outlet, the first air outlet is arranged on the fourth side plate, the second air duct extends along the width direction of the heat dissipation component, and the outlet of the second air duct is arranged corresponding to the first air outlet in the width direction of the heat dissipation component.

22. The motor driver according to claim 21, characterized in that: The fan is located below the first side panel, the fan inlet and the fan outlet are arranged opposite to each other in the up and down directions, the fan outlet is located below the fan inlet, the fan inlet is located below the air inlet so that the fan inlet is connected with the air inlet, and the first fin is located below the fan outlet so that the first air duct is connected with the fan outlet.

23. The motor driver according to any one of claims 1 to 3, characterized in that: A plurality of the first fins are formed with a recessed portion, and at least a portion of the fan is disposed in the recessed portion.

24. The motor driver according to any one of claims 2 to 3, characterized in that: The heat dissipation assembly includes a connecting plate, which is connected to the substrate. A buckle is provided on one of the shell and the connecting plate, and a slot is provided on the other of the shell and the connecting plate. The buckle is engaged with the slot so that the substrate is connected to the shell.

25. A motor drive system, characterized in that: include: Motor; and A motor driver, wherein the motor driver is connected to the motor so as to drive the motor to operate, and the motor driver is the motor driver according to any one of claims 1-24.

26. A chip mounter, characterized in that: include: Patch device; and A motor drive system, wherein the motor drive system is connected to the patch device so as to drive the patch device to move, and the motor drive system is the motor drive system according to claim 25.

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