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 define a plurality of first air ducts, wherein the plurality of first air ducts are parallel to each other, wherein the plurality of second fins define a plurality of second air ducts, wherein the extension directions of the plurality of second air ducts are all different, and wherein the first air duct and the second air duct are both connected to the fan outlet. 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 problems such as 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 with good heat dissipation effect.

[0005] An embodiment of the present invention further provides a motor drive system having the motor driver.

[0006] The embodiment of the present invention also provides a chip mounter having the above motor drive system.

[0007] The motor driver according to the embodiment of the present invention comprises:

[0008] A housing, the housing having a receiving cavity and an air inlet and an air outlet communicated with the receiving cavity;

[0009] 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

[0010] A heat dissipation component, wherein the heat dissipation component is disposed in the accommodating cavity, and the heat dissipation component includes a plurality of first fins and a plurality of second fins, wherein the plurality of first fins define a plurality of first air ducts, the plurality of first air ducts are parallel to each other, and the plurality of second fins define a plurality of second air ducts, and extension directions of at least a portion of the plurality of second air ducts are all different, and the first air ducts and the second air ducts are both connected to the fan outlet.

[0011] The motor driver according to the embodiment of the present invention has the advantages of long service life and high reliability.

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

[0013] In some embodiments, the heat dissipation assembly includes a substrate, the substrate is disposed in the accommodating cavity, the substrate is connected to the housing, and the second fin is disposed on an upper surface of the substrate;

[0014] The motor driver includes a first element and a second element. 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.

[0015] In some embodiments, the substrate includes a first portion and a second portion, the second portion is arranged higher than the first portion, the second fin is arranged on the upper surface of the first portion, the third fin is arranged on the lower surface of the second portion, the first element is arranged on the lower surface of the first portion, and the second element is arranged below the third fin; and

[0016] 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 second air duct.

[0017] In some embodiments, a plurality of the second parts are provided, and the first part is located between two of the second parts in the width direction of the heat dissipation component.

[0018] In some embodiments,

[0019] 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 second air duct faces the control board.

[0020] In some embodiments, the heat dissipation assembly includes a plurality of fourth fins, the fourth fins are arranged on the outside of the second fins, the first fins and the fourth fins are arranged on different sides of the second fins, the plurality of fourth fins define a plurality of fourth air ducts, the fourth air ducts are connected to the second air ducts, and the outlets of the fourth air ducts face the control panel.

[0021] In some embodiments, at least a portion of the plurality of fourth air ducts extend in different directions.

[0022] In some embodiments, at least a portion of the second fin extends outward into the fourth air duct.

[0023] In some embodiments, a plurality of the first air ducts extend along the width direction of the heat dissipation component, a plurality of the first fins are arranged in multiple rows along the length direction of the heat dissipation component, and multiple rows of the first fins are arranged at intervals along the length direction of the heat dissipation component.

[0024] In some embodiments, each row of the first fins includes a plurality of the first fins, the plurality of the first fins in the same row are arranged at intervals along the width direction of the heat dissipation assembly, and any two of the first fins in two adjacent rows are staggered in the width direction of the heat dissipation assembly.

[0025] In some embodiments, the second fin is a rectangular plate, and at least a portion of the second fin extends in a direction away from the first fin.

[0026] In some embodiments, a plurality of the second fins are arranged at intervals in a divergent manner, and a second air duct is defined between two adjacent second fins.

[0027] In some embodiments, the third fin is a rectangular plate, and the third fin extends in a direction away from the second fin.

[0028] In some embodiments, a plurality of the third fins are parallel to each other and arranged at intervals, and a third air duct is defined between two adjacent third fins.

[0029] In some embodiments, the fourth fin is a rectangular plate, and the fourth fin extends along the direction of the second fin.

[0030] In some embodiments, a plurality of the fourth fins are arranged at intervals, and a fourth air duct is defined between two adjacent fourth fins.

[0031] In some embodiments, the motor driver includes a first capacitor, the first capacitor is disposed below the control board, and at least a portion of the outlet of the second air duct faces the first capacitor.

[0032] 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 second fin in the width direction of the heat dissipation component, and the air outlet includes a first air outlet, the first air outlet is arranged on the third side panel, the third air duct extends along the width direction of the heat dissipation component, and the outlet of the third air duct is arranged corresponding to the first air outlet in the width direction of the heat dissipation component.

[0033] In some embodiments, 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 to the air inlet, and the first fin and the second fin are located below the fan outlet so that each of the first air duct and the second air duct is connected to the fan outlet.

[0034] In some embodiments, the heat dissipation assembly includes a substrate, the substrate is disposed in the accommodating cavity, the substrate is connected to the housing, and the first fin and the second fin are both disposed on the substrate;

[0035] 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, and the outlet of the first air duct faces the second capacitor.

[0036] 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, the second capacitor 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 first air outlet, the first air outlet is arranged on the third side panel, the first air duct extends along the width direction of the heat dissipation component, and the outlet of the first air duct is arranged corresponding to the first air outlet in the width direction of the heat dissipation component.

[0037] In some embodiments, the substrate includes a first area and a second area, the first area and the second area are arranged along the length direction of the heat dissipation component, the first fin is arranged in the first area, the second fin is arranged in the second area, and the extension direction of the first air duct is different from the extension direction of the second air duct.

[0038] 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.

[0039] 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.

[0040] The motor drive system of the embodiment of the present invention has the advantages of long service life and high reliability.

[0041] 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.

[0042] The chip mounter of the embodiment of the present invention has the advantages of long service life and high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 FIG. 4 is a schematic diagram of a partial structure of a motor driver according to an embodiment of the present invention.

[0044] Figure 2 It is a schematic structural diagram of a heat dissipation component of a motor driver according to an embodiment of the present invention.

[0045] Figure 3 yes Figure 1 The structural schematic diagram of the first side panel and the third side panel is omitted.

[0046] Figure 4 yes Figure 1 The structural diagram of the housing and the control board is hidden.

[0047] Figure 5 yes Figure 4 Schematic diagram of the structure from another perspective.

[0048] Figure 6 yes Figure 3 main view.

[0049] Figure 7 yes Figure 1 The left side view of the shell is hidden.

[0050] Figure 8 yes Figure 1 The right side view of the shell is hidden.

[0051] Fig. 9 yes Figure 2 Schematic diagram of the structure of the heat dissipation component.

[0052] Reference numerals:

[0053] Motor driver 100;

[0054] Shell 1; first side plate 101; air inlet 1011; air outlet 102; third side plate 103; first air outlet 1031; fourth side plate 104; second air outlet 1041;

[0055] Heat dissipation component 2; substrate 201;

[0056] first avoidance 2013; first area 2014; second area 2015; first part 20151; second part 20152; middle part 20153; flow hole 201531; third fin 2016; third air duct 20161; first fin 202; first air duct 2021; second fin 203; second air duct 2031; fourth fin 204; fourth air duct 2041; connecting plate 205; buckle 2051; mounting frame 206; first mounting portion 2061; first connecting column 2062; first fastener 2063; second mounting portion 2064; second connecting column 2065; second fastener 2066; reinforcing rib 2067; positioning column 207;

[0057] Fan 3; fan inlet 301; fan outlet 302;

[0058] Control panel 4;

[0059] The second capacitor 5;

[0060] Second element 7;

[0061] Power board 8;

[0062] The first capacitor 9 . DETAILED DESCRIPTION

[0063] 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.

[0064] Please refer to the following Figures 1 to 9 A motor driver 100 according to an embodiment of the present invention is introduced.

[0065] The motor driver 100 according to the embodiment of the present invention includes a housing 1 , a fan 3 and a heat dissipation component 2 .

[0066] The housing 1 has a receiving chamber and an air inlet 1011 and an air outlet 102 communicating with the receiving chamber. A fan 3 is disposed in the receiving chamber. The fan 3 has a fan inlet and a fan outlet. The fan inlet communicates with the air inlet 1011 .

[0067] The heat dissipation component 2 is arranged in the accommodating cavity, and the heat dissipation component 2 includes multiple first fins 202 and multiple second fins 203. The multiple first fins 202 define multiple first air ducts 2021, and the multiple first air ducts 2021 are parallel to each other; the multiple second fins 203 define multiple second air ducts 2031, and the extension directions of the multiple second air ducts 2031 are different. The first air ducts 2021 and the second air ducts 2031 are both connected to the fan outlet.

[0068] An air inlet 1011 and an air outlet 102 are provided on the shell 1. A fan 3 is provided in the shell 1, and the fan inlet of the fan 3 is connected with the air inlet 1011 so that the cooling fluid enters the accommodating cavity through the fan 3, and the cooling fluid entering the accommodating cavity is discharged through the air outlet 102.

[0069] When the motor driver 100 of the embodiment of the present invention is working, the electronic components arranged in the accommodating cavity will generate heat. The first fin 202 and the second fin 203 of the heat dissipation component 2 are used to exchange heat between the cooling fluid introduced by the fan 3 and the electronic components in the accommodating cavity. After the cooling fluid is cooled, it flows out through the air outlet 102, thereby reducing the temperature of the electronic components in the accommodating cavity.

[0070] Since the heat dissipation component 2 includes not only a plurality of first fins 202, and the plurality of first fins 202 form mutually parallel first air ducts 2021, but also a plurality of second fins 203, and the plurality of second fins 203 form second air ducts 2031 uniformly extending in the same direction, the overall effective heat dissipation area of ​​the heat dissipation component 2 is large, so that the heat dissipation performance of the heat dissipation component 2 is good, so that each component of the motor driver 100 works 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.

[0071] Therefore, the motor driver 100 according to the embodiment of the present invention has the advantages of long service life and high reliability.

[0072] Alternatively, the cooling fluid may be air.

[0073] Optionally, the fan inlet of the fan 3 is arranged opposite to the air inlet 1011 , and the fan outlet of the fan 3 is arranged opposite to the inlet of the first air duct 2021 and the inlet of the second air duct 2031 , so that the cooling fluid enters the first air duct 2021 and the second air duct 2031 through the fan 3 .

[0074] Optionally, both the first fin 202 and the second fin 203 are provided with positioning posts 207 , and the fan 3 is provided with positioning holes, and the positioning posts 207 are inserted into the positioning holes to achieve horizontal positioning of the fan 3 .

[0075] For example, Figure 4 As shown, four positioning posts 207 are vertically arranged, and the positioning posts 207 are arranged in two rows and two columns. Two positioning posts 207 are arranged on the first fin 202, and the other two positioning posts 207 are arranged on the second fin 203. Four positioning holes are correspondingly arranged, and the four positioning posts correspond to the four positioning holes one by one. The positioning posts are inserted into the corresponding positioning holes to realize the horizontal positioning of the fan 3.

[0076] In addition, the lower end surface of the fan 3 abuts against the first fin 202 and the second fin 203, respectively, and the upper end surface of the fan 3 abuts against the housing 1 ( Figure 1 On the first side plate 101), the fan 3 is positioned in the vertical direction.

[0077] In some embodiments, the accommodating cavity includes a first cavity portion and a second cavity portion, and the first cavity portion and the second cavity portion are arranged along the length direction of the heat dissipation component 2. The first fin 202 is provided in the first cavity portion, and the second fin 203 is provided in the second cavity portion, and the extension direction of the first air duct 2021 is different from the extension direction of the second air duct 2031.

[0078] In order to make the technical solution of the present application easier to understand, the following takes the thickness direction of the heat dissipation component 2 as being consistent with the up-down direction, the length direction of the heat dissipation component 2 as being consistent with the front-back direction, and the width direction of the heat dissipation component 2 as being consistent with the left-right direction as an example to further describe the technical solution of the present application. Figures 1 to 5 shown.

[0079] For example, Figure 4 As shown, the first cavity portion is arranged at the front side of the second cavity portion, each first air duct 2021 extends along the left-right direction, a part of the second air duct 2031 extends along the front-back direction, and another part of the second air duct 2031 extends along the left-right direction.

[0080] Optionally, the heat dissipation component 2 includes a substrate 201, the substrate 201 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 substrate 201. The substrate 201 includes a first region 2014 and a second region 2015, and the first region 2014 and the second region 2015 are connected along the length direction of the heat dissipation component 2 (such as Figure 4 The first fin 202 is arranged in the first area 2014, and the second fin 203 is arranged in the second area 2015. The first area is arranged in the first cavity part, and the second area is arranged in the second cavity part.

[0081] like Fig. 9 As shown, the first area 2014 is arranged at the rear side of the second area 2015, and correspondingly, the first fin 202 is arranged at the rear side of the second fin 203, and the extension direction of the first air duct 2021 is different from the extension direction of the second air duct 2031.

[0082] Therefore, the first air duct 2021 and the second air duct 2031 do not interfere with each other, which is beneficial to reducing the flow resistance of the cooling fluid, thereby improving the heat dissipation effect of the motor driver 100.

[0083] Optionally, the first fin 202 , the second fin 203 and the base plate 201 are integrally formed.

[0084] In some embodiments, the plurality of first air ducts 2021 are arranged along the width direction of the heat dissipation component 2 (eg, Figure 4 The plurality of first fins 202 extend along the length direction of the heat dissipation component 2 (such as the left and right direction shown in FIG. Figure 4 The plurality of rows of first fins 202 are arranged in a plurality of rows along the length direction of the heat dissipation assembly 2 (such as Figure 4 This is beneficial to further increase the heat dissipation area of ​​the heat dissipation component 2 and improve the heat dissipation performance of the motor driver 100.

[0085] For example, Figure 4 As shown, a plurality of first fins 202 are arranged at intervals in the front-to-back direction to form a plurality of rows of first fins 202 , and two adjacent rows of first fins 202 are arranged at intervals in the front-to-back direction.

[0086] In some embodiments, each row of first fins 202 includes a plurality of first fins 202, and the plurality of first fins 202 in the same row are arranged along the width direction of the heat dissipation component 2 (eg, Figure 4 In the left and right directions shown in FIG. 1 , any two of the first fins 202 in two adjacent rows are arranged in a spaced relationship in the width direction of the heat dissipation component 2 (as shown in FIG. 1 ). Figure 4 The two components are staggered in the left and right directions (as shown).

[0087] For example, Figure 4 As shown, in the two adjacent rows of first fins 202, the first fins 202 in the front row and any first fins 202 in the rear row are staggered in the left-right direction. In other words, the plurality of first fins 202 are arranged in a plurality of rows, and the plurality of rows of first fins 202 are arranged at intervals along a first direction, and the first direction is parallel to the length direction of the heat dissipation component 2 (such as Figure 4 The angle between the front and rear directions (shown in FIG. 1 ) is less than 90°. Thus, the cooling fluid entering from the fan inlet is facilitated to enter each first air duct 2021 for heat dissipation, which is beneficial to further improve the heat dissipation performance of the motor driver 100.

[0088] Optionally, the second fin 203 is a rectangular plate, and at least a portion of the second fin 203 extends in a direction away from the first fin 202 .

[0089] Therefore, the second fin 203 has a simple structure and is convenient to design and process.

[0090] Optionally, the plurality of second fins 203 are arranged at intervals in a divergent manner, and a second air duct 2031 is defined between two adjacent second fins 203 .

[0091] For example, the extension directions of the plurality of second air ducts 2031 are all different.

[0092] In some embodiments, the motor driver 100 includes a second capacitor 5, which is disposed in the accommodating cavity. The substrate 201 has a first avoidance opening 2013, a portion of the second capacitor 5 is located in the first avoidance opening 2013, and the outlet of the first air duct 2021 faces the second capacitor 5.

[0093] For example, Figure 3 and Figure 4 As shown, the first fin 202 and the second fin 203 are disposed on the upper surface of the substrate 201 .

[0094] Thus, the cooling fluid flowing through the first air duct 2021 conducts heat convection with the second capacitor 5, thereby cooling the second capacitor 5, which is beneficial to further improve the heat dissipation performance of the motor driver 100. In addition, the second capacitor 5 is installed in the first avoidance opening 2013, making the overall structure of the motor driver 100 compact.

[0095] In some embodiments, the housing 1 includes a first side plate 101 and a third side plate 103, wherein 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 third side plate 103 is disposed in the width direction of the heat dissipation assembly 2 (such as Figure 1 The second capacitor is on one side of the heat dissipation component 2 in the width direction (as shown in the left and right directions). Figure 1 The air outlet 102 includes a first air outlet 1031, which is disposed on the third side plate 103. The first air duct 2021 extends along the width direction of the heat dissipation component 2 (as shown in the left and right direction). Figure 1 The left and right directions as shown) are extended.

[0096] For example, Figure 1 and Figure 3 As shown, the first side plate 101 is arranged above the housing 1, and the air inlet 1011 is arranged on the first side plate 101. In other words, the air inlet 1011 is arranged above the housing 1. The fan 3 is located below the first side plate 101. The fan inlet 301 and the fan outlet 302 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 below the air inlet 1011 so that the fan inlet 301 is connected with the air inlet 1011. Each of the first fin 202 and the second fin 203 is located below the fan outlet 302 so that each of the first air duct 2025 and the second air duct 2031 is connected with the fan outlet 302. Thus, the cooling fluid is made to quickly enter the first air duct 2021 and the second air duct 2031 through the air inlet 1011, the fan inlet 301 and the fan outlet 302 by using the fan 3.

[0097] The third side plate 103 is the left side plate of the housing 1 , and the air outlet 102 is disposed on the left side plate. The distance between the second capacitor 5 and the third side plate 103 is smaller than the distance between the first fin 202 and the third side plate 103 .

[0098] Optionally, a plurality of air outlets 102 are provided, and the plurality of air outlets 102 are arranged at intervals on the left side panel.

[0099] Therefore, while ensuring that the cooling fluid flowing through the first air duct 2021 cools and dissipates heat for the second capacitor 5, the cooling fluid flowing through the second capacitor 5 is facilitated to quickly flow out from the first air outlet 1031, which is beneficial to improving the heat dissipation effect, thereby improving the reliability of the motor driver 100.

[0100] In some embodiments, the housing 1 includes a fourth side plate 104, and a second air outlet 1041 is provided on the fourth side plate 104. The fourth side plate 104 is the right side plate of the housing, so that the cooling airflow can be easily discharged from the second air outlet 1041 after dissipating the heat from the electronic components arranged near the right side plate of the housing 1.

[0101] In some embodiments, the motor driver 100 includes a control board 4 , which is disposed in the accommodating cavity, and an outlet of at least a portion of the second air duct 2031 faces the control board 4 .

[0102] like Figure 3 As shown, the control board 4 is arranged at the front end of the accommodating cavity, and the outlets of some second air ducts 2031 face the control board 4 or the outlets of all second air ducts 2031 face the control board 4.

[0103] Therefore, the cooling fluid flowing out of the second air duct 2031 can perform convection heat exchange with the control board 4, so that the control board 4 is cooled by the cooling fluid flowing through the second air duct 2031, so that the control board 4 dissipates heat, improves the operating stability of the control board 4, and further improves the reliability of the motor driver 100.

[0104] In some embodiments, Figure 4 As shown, the motor driver 100 includes a first capacitor 9 , which is disposed below the control board 4 , and at least a portion of the outlet of the second air duct 2031 faces the first capacitor 9 .

[0105] Thus, the cooling fluid flowing out of the second air duct 2031 can perform convection heat exchange with the first capacitor 9, so that the first capacitor 9 is cooled by the cooling fluid flowing through the second air duct 2031, so that the first capacitor 9 dissipates heat, improves the operating stability of the first capacitor 9, and further improves the reliability of the motor driver 100. In addition, the first capacitor 9 is arranged below the control board 4, so that the overall structure of the motor driver 100 is compact, which is conducive to reducing the overall volume of the motor driver 100.

[0106] In some embodiments, the heat dissipation assembly 2 includes a third fin 2016, and the third fin 2016 is disposed outside the second fin 203. The third fin 2016 and the first fin 202 are disposed on different sides of the second fin 203, and a plurality of third fins 2016 define a plurality of third air ducts 20161, which are connected to the second air duct 2031.

[0107] For example, Figure 4 As shown, the third fins 2016 are arranged on the left and right sides of the second fins 203, and the first fins 202 are arranged on the rear side of the second fins 203. A plurality of third fins 2016 are arranged at intervals, and two adjacent third fins 2016 define a third air duct 20161, which is connected to the outlet of the second air duct 2031, so that the cooling fluid flowing out of the outlet of the second air duct 2031 can enter the third air duct 20161.

[0108] Therefore, providing the third fin 2016 can not only increase the effective heat dissipation area of ​​the heat dissipation component 2, but also utilize the third fin 2016 to further diffuse the cooling fluid, thereby improving the heat dissipation performance of the heat dissipation component 2.

[0109] Optionally, the third fin 2016 is a rectangular plate, and the third fin 2016 extends in a direction away from the second fin 203 .

[0110] Therefore, the third fin 2016 has a simple structure and is convenient to design and process.

[0111] Optionally, a plurality of third fins 2016 are arranged parallel to each other and at intervals, and a third air duct 20161 is defined between two adjacent third fins 2016 .

[0112] For example, Figure 1 and Figure 4 As shown, the plurality of third air ducts 20161 all extend in the left-right direction and all face the first air outlet 1031 .

[0113] As a result, the cooling fluid flowing through the third air duct 20161 can flow out quickly, which is beneficial to further improve the heat dissipation effect of the motor driver 100.

[0114] In some embodiments, the second fin 203 is disposed on the upper surface of the substrate 201. The motor driver 100 includes a first element (not shown in the figure) and a second element 7, both of which are disposed in the accommodating cavity, the first element is disposed on the lower surface of the substrate 201, and the second element 7 is disposed below the substrate 201.

[0115] For example, Figure 3 , Figure 7 and Fig. 9As shown, the first fin 202 and the second fin 203 are fixed on the upper surface of the substrate 201, the first element is provided on the lower surface of the substrate 201, and the first element and the second fin 203 are arranged opposite to each other in the up and down direction.

[0116] Thus, the heat emitted by the first element during operation can be transferred to the substrate 201 through heat conduction, and then transferred to the first fin 202, the second fin 203 and the third fin 2016 disposed on the substrate 201 through the substrate 201. The cooling fluid entering the accommodating cavity can conduct heat convection and heat conduction with the first fin 202, the second fin 203 and the third fin 2016, thereby bringing the heat transferred from the first element to the heat dissipation assembly 2 out of the housing 1, achieving cooling and heat dissipation of the first element, thereby further improving the reliability of the motor driver 100.

[0117] Optionally, the first component may be a high-power consumption chip such as an IPM module, a rectifier bridge or an IGBT module, and the second component 7 may be a key component such as a diode, a power supply, a capacitor or a resistor.

[0118] In some embodiments, the substrate 201 includes a first portion 20151, a second portion 20152 and a middle portion 20153, the second portion 20152 is arranged higher than the first portion 20151, and the second fin 203 is arranged on the upper surface of the first portion 20151. The third fin 2016 is arranged on the lower surface of the second portion 20152, the first element is arranged on the lower surface of the first portion 20151, and the second element 7 is arranged below the third fin 2016. One end of the middle portion 20153 is connected to the first portion 20151, and the other end of the middle portion 20153 is connected to the second portion 20152, and the middle portion 20153 has a flow hole 201531 connected to the second air duct 2031.

[0119] For example, Figures 6 to 9 As shown, the second part 20152 is located at the rear side of the first part 20151, the first part 20151 and the second part 20152 both extend in the left-right direction, and a middle part 20153 extending in the up-down direction is provided between the second part 20152 and the first part 20151, so that the first part 20151, the middle part 20153 and the second part 20152 form a stepped structure. A flow hole 201531 is provided on the middle part 20153.

[0120] The middle part 20153 has a flow hole 201531 connected to the second air duct 2031, so that the flow hole 201531 can connect the second air duct 2031 and the third air duct 20161, so that the cooling fluid enters the third air duct 20161 from the second air duct 2031, thereby performing forced convection heat exchange with the second element 7, thereby reducing the temperature of the second element 7.

[0121] In some embodiments, the second portion 20152 is provided in plurality, and the first portion 20151 is provided in the width direction of the heat dissipation component 2 (eg Figure 6 In the left-right direction as shown), it is located between two of the second parts 20152.

[0122] For example, Figure 6 As shown, two second parts 20152 are provided, and the first part 20151 is located between the two second parts 20152 .

[0123] Thus, the second air duct on the first division 20151 can be connected to the third air duct on the multiple second parts 20152, so that the multiple different second elements 7 can be cooled and dissipated separately by the cooling fluid flowing through each second part 20152, which is beneficial to further improve the reliability of the motor driver 100.

[0124] It should be noted that the number of the second elements 7 corresponding to each second portion 20152 may be one or more, and the third fin 2016 on each second portion 20152 corresponds to at least one second element 7 .

[0125] In some embodiments, the third fin 2016 is disposed in the width direction of the heat dissipation component 2 (eg, Figure 1 The air outlet 102 includes a first air outlet 1031, which is disposed on the third side plate 103, and a third air duct 20161 is disposed along the width direction of the heat dissipation component 2 (as shown in the left and right direction). Figure 1 The outlet of the third air duct 20161 is arranged in the width direction of the heat dissipation component 2 corresponding to the first air outlet 1031.

[0126] For example, Figures 1 to 3 As shown, the cooling fluid flowing through the third air duct 20161 is facilitated to flow out from the air outlet 102, thereby accelerating the heat exchange efficiency, which is beneficial to improving the heat dissipation effect of the heat dissipation component 2.

[0127] Optionally, a plurality of air outlets 102 are provided, and the plurality of air outlets 102 are arranged at intervals on the left side panel.

[0128] Optionally, the extension directions of the plurality of third fins 2016 are all the same, and the plurality of third fins 2016 all extend along the left-right direction.

[0129] In some embodiments, the heat dissipation assembly 2 includes a plurality of fourth fins 204, the fourth fins 204 are arranged outside the second fins 203, and the first fins 202 and the fourth fins 204 are arranged on different sides of the second fins 203. The plurality of fourth fins 204 define a plurality of fourth air ducts 2041, the fourth air ducts 2041 are connected to the second air ducts 2031, and the outlets of the fourth air ducts 2041 face the control board 4.

[0130] For example, Figure 4 As shown, the first fin 202 is arranged at the rear side of the second fin 203, and the fourth fin 204 is arranged at the front side of the second fin 203. Therefore, the fourth fin 204 can increase the effective heat dissipation area of ​​the heat dissipation assembly 2, which is beneficial to improve the heat dissipation effect of the control board 4 and further improve the reliability of the motor driver 100.

[0131] In some embodiments, the extension directions of the plurality of fourth air ducts 2041 are all different. Figure 4 As shown, the plurality of fourth air ducts 2041 extend in different directions, thereby facilitating the diffusion of the cooling fluid and further improving the heat dissipation efficiency of the motor driver 100 .

[0132] In some embodiments, at least a portion of the second fin 203 extends outward into the fourth air duct 2041 .

[0133] For example, Figure 4 As shown, part of the second fin 203 extends forward into the fourth air duct 2041. Thus, the effective heat dissipation area of ​​the heat dissipation assembly 2 can be increased, and the heat dissipation efficiency of the motor driver 100 can be further improved.

[0134] Optionally, the plurality of fourth fins 204 are rectangular plates, and the fourth fins 204 extend in a direction away from the second fins 203 .

[0135] Therefore, the fourth fin 204 has a simple structure and is convenient to design and process.

[0136] Optionally, a plurality of fourth fins 204 are arranged at intervals, and a fourth air duct 2041 is defined between two adjacent fourth fins 204 .

[0137] In some embodiments, 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 shell 1 and the connecting plate 205, and a slot is provided on the other of the shell 1 and the connecting plate 205. The buckle 2051 is snap-fitted with the slot so that the substrate 201 is connected to the shell 1.

[0138] For example, Figure 1 and Figure 4As 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 shell 1, and the buckle 2051 is engaged with the slot to realize the connection between the substrate 201 and the shell 1, thereby facilitating the connection between the substrate 201 and the shell 1, which is beneficial to improving the assembly efficiency of the motor driver 100.

[0139] Of course, a slot may be provided on the connecting plate, and a buckle may be provided on the housing.

[0140] 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.

[0141] The housing 1 further includes a second side plate and a fourth side plate 104 . The first side plate 101 and the second side plate are arranged opposite to each other in the front-to-back direction, and the third side plate 103 and the fourth side plate 104 are arranged opposite to each other in the left-to-right direction.

[0142] Optionally, the first side plate 101, the second side plate, the third side plate 103 and the fourth side plate 104 are an integrated structure, and the first side plate 101, the second side plate, the third side plate 103 and the fourth 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 third side plate 103 and the fourth side plate 104. The buckle 2051 on the left side is engaged with the slot on the third side plate 103, and the buckle 2051 on the right side is engaged with the slot on the fourth side plate 104. Thus, the connecting plate 205, the first side plate 101, the second side plate, the third side plate 103 and the fourth side plate 104 define a receiving space.

[0143] like Figure 4 and Figure 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 accommodating cavity. The second capacitor 5, the first capacitor 9 and the second element 7 are all arranged on the power board 8.

[0144] The motor driver 100 in 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.

[0145] Alternatively, if Figure 3As shown, the first mounting portion 2061 is a first connecting column 2062 , the second mounting portion 2064 is a second connecting column 2065 , the control board 4 is connected to the first connecting column 2062 via a first fastener 2063 , and the power board 8 is connected to the second connecting column 2065 via a second fastener 2066 .

[0146] Specifically, the first fastener 2063 is a first screw, and the second fastener 2066 is a second screw. The control board 4 is provided with a first connection hole, the first connection column 2062 is provided with a first threaded hole, the first screw penetrates the first connection hole and is threadedly connected with the first threaded hole, thereby fixing the control board 4 on the mounting frame 206. The power board 8 is provided with a second connection hole, the second connection column 2065 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 power board 8 on the mounting frame 206.

[0147] For example, Figure 3 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 .

[0148] Alternatively, if Figure 4 As shown, the substrate 201 and the mounting frame 206 are an integrated structure, thereby facilitating the processing efficiency 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.

[0149] 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.

[0150] Optionally, the mounting frame 206 is provided with reinforcing ribs 2067. Thus, the overall strength of the mounting frame 206 can be improved by utilizing the reinforcing ribs 2067.

[0151] Optionally, the substrate 201 and the mounting frame 206 are an integrated structure.

[0152] 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 embodiment.

[0153] Therefore, the motor drive system of the embodiment of the present invention has the advantages of long service life and high reliability.

[0154] 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.

[0155] Therefore, the chip mounter according to the embodiment of the present invention has the advantages of long service life and high reliability.

[0156] 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0157] 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.

[0158] 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.

[0159] 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.

[0160] 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.

[0161] 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 define a plurality of first air ducts, the plurality of first air ducts are parallel to each other, the plurality of second fins define a plurality of second air ducts, at least a portion of the plurality of second air ducts have different extension directions, and the first air ducts and the second air ducts are both connected to the fan outlet; The heat dissipation assembly includes a third fin, the third fin is arranged outside the second fin, the third fin and the first fin are arranged on different sides of the second fin, a plurality of third air ducts are defined between the plurality of third fins, and the third air ducts are communicated with the second air ducts; The heat dissipation assembly includes a substrate, the substrate is arranged in the accommodating cavity, the substrate is connected to the housing, and the second fin is arranged on the upper surface of the substrate; The motor driver comprises a first element and a second element, wherein 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; The base plate includes a first part and a second part, the second part is arranged higher than the first part, the second fin is arranged on the upper surface of the first part, the third fin is arranged on the lower 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 third fin; 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 second air duct.

2. The motor driver according to claim 1, characterized in that: There are a plurality of second parts, and the first part is located between two of the second parts in the width direction of the heat dissipation component.

3. The motor driver according to any one of claims 1 to 2, 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 second air duct are oriented toward the control board.

4. The motor driver according to claim 3, characterized in that: The heat dissipation assembly includes a plurality of fourth fins, the fourth fins are arranged on the outside of the second fins, the first fins and the fourth fins are arranged on different sides of the second fins, the plurality of fourth fins define a plurality of fourth air ducts, the fourth air ducts are connected to the second air ducts, and the outlets of the fourth air ducts face the control panel.

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

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

7. The motor driver according to any one of claims 1 to 2, characterized in that: The plurality of first air ducts extend along the width direction of the heat dissipation component, the plurality of first fins are arranged in a plurality of rows along the length direction of the heat dissipation component, and the plurality of rows of first fins are arranged at intervals along the length direction of the heat dissipation component.

8. The motor driver according to claim 7, characterized in that: Each row of the first fins includes a plurality of the first fins, the plurality of the first fins in the same row are arranged at intervals along the width direction of the heat dissipation component, and any two of the first fins in two adjacent rows are arranged staggered in the width direction of the heat dissipation component.

9. The motor driver according to any one of claims 1 to 2, characterized in that: The second fin is a rectangular plate, and at least a portion of the second fin extends in a direction away from the first fin.

10. The motor driver according to claim 9, characterized in that: The plurality of second fins are arranged at intervals in a divergent manner, and a second air duct is defined between two adjacent second fins.

11. The motor driver according to any one of claims 1 to 2, characterized in that: The third fin is a rectangular plate, and the third fin extends in a direction away from the second fin.

12. The motor driver according to claim 11, characterized in that: The plurality of third fins are parallel to each other and arranged at intervals, and a third air duct is defined between two adjacent third fins.

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

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

15. The motor driver according to claim 3, characterized in that: The motor driver includes a first capacitor, which is arranged below the control board, and at least a portion of the outlet of the second air duct faces the first capacitor.

16. The motor driver according to any one of claims 1-2, 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 second fin in the width direction of the heat dissipation component, the air outlet comprises a first air outlet, the first air outlet is arranged on the third side plate, the third air duct extends along the width direction of the heat dissipation component, and the outlet of the third air duct is arranged corresponding to the first air outlet in the width direction of the heat dissipation component.

17. The motor driver according to claim 16, 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, and the fan inlet is located below the air inlet so that the fan inlet is connected with the air inlet, and the first fin and the second fin are located below the fan outlet so that each of the first air duct and the second air duct is connected with the fan outlet.

18. The motor driver according to claim 1, characterized in that: The heat dissipation assembly includes a substrate, the substrate is arranged in the accommodating cavity, the substrate is connected to the housing, and the first fin and the second fin are both arranged on the substrate; 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, and the outlet of the first air duct faces the second capacitor.

19. The motor driver according to claim 18, 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, the third side plate is arranged on one side in the width direction of the heat dissipation component, the second capacitor 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 first air outlet, the first air outlet is arranged on the third side plate, the first air duct extends along the width direction of the heat dissipation component, and the outlet of the first air duct is arranged corresponding to the first air outlet in the width direction of the heat dissipation component.

20. The motor driver according to claim 18, characterized in that: The substrate includes a first area and a second area, the first area and the second area are arranged along the length direction of the heat dissipation component, the first fin is arranged in the first area, the second fin is arranged in the second area, and the extension direction of the first air duct is different from the extension direction of the second air duct.

21. The motor driver according to any one of claims 1 to 2, 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.

22. 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 1-21.

23. 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 22.

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