CN113853085A

CN113853085A - Motor driver, motor driving system and chip mounter

Info

Publication number: CN113853085A
Application number: CN202111295570.4A
Authority: CN
Inventors: 郑麒麟; 王坤
Original assignee: Servotronix Motion Control Shenzhen Co ltd; Guangdong Midea Intelligent Technologies Co Ltd
Current assignee: Servotronix Motion Control Shenzhen Co ltd; Guangdong Midea Intelligent Technologies Co Ltd
Priority date: 2021-11-03
Filing date: 2021-11-03
Publication date: 2021-12-28

Abstract

The invention discloses a motor driver, a motor driving system and a chip mounter, wherein the motor driver comprises a shell, a fan and a heat dissipation assembly, the shell is provided with a containing cavity, an air inlet and an air outlet which are communicated with the containing cavity, the fan is arranged in the containing cavity, the fan is provided with a fan inlet and a fan outlet, the fan inlet is communicated with the air inlet, the heat dissipation assembly is arranged in the containing cavity, the heat dissipation assembly comprises a plurality of first fins and a plurality of second fins, the first fins define a plurality of first air channels, the first air channels are parallel to each other, the second fins define a plurality of second air channels, the extending directions of the second air channels are different, and the first air channels and the second air channels are communicated with the fan outlet. The motor driver provided by the embodiment of the invention has the advantages of long service life, high reliability and the like.

Description

Motor driver, motor driving system and chip mounter

Technical Field

The invention relates to the technical field of motor drive control, in particular to a motor driver, a motor drive system and a chip mounter.

Background

The motor is generally driven by a motor driver, the motor driver comprises a shell, a power board, a control board, a rectifying module and a filtering module, and the power board, the control board, the rectifying module and the filtering module are all arranged in the shell. The motor driver in the related art mainly radiates heat through air cooling, and the motor driver in the related art has the problems of poor radiating effect and the like.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.

Therefore, the embodiment of the invention provides the motor driver with good heat dissipation effect.

The embodiment of the invention also provides a motor driving system with the motor driver.

The embodiment of the invention also provides a chip mounter with the motor driving system

A motor driver of an embodiment of the present invention includes:

the air conditioner comprises a shell, a fan and a control device, wherein the shell is provided with an accommodating cavity, and an air inlet and an air outlet which are communicated with the accommodating cavity;

the fan is arranged in the accommodating cavity and provided with a fan inlet and a fan outlet, and the fan inlet is communicated with the air inlet; and

the radiating assembly is arranged in the accommodating cavity and comprises a plurality of first fins and a plurality of second fins, the first fins define a plurality of first air channels, the first air channels are parallel to each other and are multiple, the second fins define a plurality of second air channels, the extending directions of at least one part of the second air channels are different, and the first air channels are communicated with the fan outlets.

The motor driver provided by the embodiment of the invention has the advantages of long service life, high reliability and the like.

In some embodiments, the heat dissipation assembly includes a third fin disposed outside the second fin, the third fin and the first fin are disposed on different sides of the second fin, a plurality of third air channels are defined between the third fins, and the third air channels are communicated with the second air channels.

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

the motor driver comprises a first element and a second element, the first element and the second element are 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.

In some embodiments, the base plate includes a first portion and a second portion, the second portion being disposed higher than the first portion, the second fin being disposed on an upper surface of the first portion, the third fin being disposed on a lower surface of the second portion, the first element being disposed on a lower surface of the first portion, the second element being disposed below the third fin; and

and the middle part is connected with the first part at one end and the second part at the other end, and is provided with an overflowing hole communicated with the second air duct.

In some embodiments, the second portion is provided in plurality, and the first portion is located between two of the second portions in a width direction of the heat dissipation assembly.

In some embodiments of the present invention, the substrate is,

in some embodiments, the motor driver includes a control board disposed in the receiving cavity, and at least a portion of the second air duct has an outlet facing the control board.

In some embodiments, the heat dissipation assembly includes a plurality of fourth fins, the fourth fins are disposed on outer sides of the second fins, the first fins and the fourth fins are disposed on different sides of the second fins, the plurality of fourth fins define a plurality of fourth air channels, the fourth air channels are communicated with the second air channels, and outlets of the fourth air channels face the control board.

In some embodiments, at least a portion of the plurality of fourth air paths extend in different directions.

In some embodiments, at least a portion of the first fin extends outwardly into the fourth wind tunnel.

In some embodiments, the first air duct extends along the width direction of the heat dissipation assembly, the first fins are arranged in a plurality of rows along the length direction of the heat dissipation assembly, and the first fins are arranged in a plurality of rows at intervals along the length direction of the heat dissipation assembly.

In some embodiments, each row of the first fins includes a plurality of the first fins, the first fins located 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 arranged in a staggered manner in the width direction of the heat dissipation assembly.

In some embodiments, the second fin is a rectangular plate, at least a portion of the second fin extending in a direction away from the first fin.

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

In some embodiments, the third fin is a rectangular plate, the third fin extending in a direction away from the second fin.

In some embodiments, a plurality of the third fins are arranged in parallel and spaced apart from each other, and one third air channel is defined between two adjacent third fins.

In some embodiments, the fourth fin is a rectangular plate, the fourth fin extending in a direction of the second fin.

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

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

In some embodiments, the housing includes a first side plate and a third side plate, the first side plate is disposed above the heat dissipation assembly, and the air inlet is disposed on the first side plate; the third side plate is arranged on one side of the width direction of the heat dissipation assembly, the third fin is arranged on the width direction of the heat dissipation assembly and is closer to the third side plate relative to the second fin, the air outlet comprises a first air outlet, the first air outlet is arranged on the third side plate, the third air channel extends along the width direction of the heat dissipation assembly, and an outlet of the third air channel is arranged on the width direction of the heat dissipation assembly and corresponds to the first air outlet.

In some embodiments, the fan is located below the first side plate, the fan inlet and the fan outlet are opposite in an up-down direction, the fan outlet is located below the fan inlet, the fan inlet is located below the air inlet, so that the fan inlet is communicated 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 channel and the second air channel is communicated with the fan outlet.

In some embodiments, the heat dissipation assembly includes a base plate disposed in the receiving cavity, the base plate is connected to the housing, and the first fin and the second fin are disposed on the base plate;

the motor driver comprises a second capacitor, the second capacitor is arranged in the accommodating cavity, the substrate is provided with a first avoiding opening, one part of the second capacitor is located in the first avoiding opening, and the outlet of the first air channel faces the second capacitor.

In some embodiments, the housing includes a first side plate and a third side plate, the first side plate is disposed above the heat dissipation assembly, and the air inlet is disposed on the first side plate; the third side plate is arranged on one side of the width direction of the heat dissipation assembly, the second capacitor is arranged on the side, close to the third side plate, of the width direction of the heat dissipation assembly relative to the first fin, the air outlet comprises a first air outlet, the first air outlet is arranged on the third side plate, the first air channel extends along the width direction of the heat dissipation assembly, and an outlet of the first air channel is arranged on the width direction of the heat dissipation assembly corresponding to the first air outlet.

In some embodiments, the base plate includes a first region and a second region, the first region and the second region are arranged along a length direction of the heat dissipation assembly, the first fin is disposed in the first region, the second fin is disposed in the second region, and an extending direction of the first air duct and an extending direction of the second air duct are different.

In some embodiments, the heat dissipation assembly includes a connection plate, the connection plate is connected to the base plate, one of the housing and the connection plate is provided with a buckle, the other of the housing and the connection plate is provided with a clamping groove, and the buckle is in clamping fit with the clamping groove so that the base plate is connected to the housing.

The motor driving system of the embodiment of the invention comprises a motor and a motor driver, wherein the motor driver is connected with the motor so as to drive the motor to operate, and the motor driver is the motor driver of any one of the embodiments.

The motor driving system provided by the embodiment of the invention has the advantages of long service life, high reliability and the like.

The chip mounter in the embodiment of the invention comprises a chip mounting device and a motor driving system, wherein the motor driving system is connected with the chip mounting device so as to drive the chip mounting device to move, and the motor driving system is the motor driving system in any one of the above embodiments.

The chip mounter provided by the embodiment of the invention has the advantages of long service life, high reliability and the like.

Drawings

Fig. 1 is a partial structural view of a motor driver according to an embodiment of the present invention.

Fig. 2 is a schematic structural view at a heat dissipation assembly of a motor driver according to an embodiment of the present invention.

Fig. 3 is a schematic structural view of fig. 1 with the first side plate and the third side plate hidden.

Fig. 4 is a schematic view of the structure of fig. 1 with the housing and control panel hidden.

Fig. 5 is a schematic view of the structure of fig. 4 from another view angle.

Fig. 6 is a front view of fig. 3.

Fig. 7 is a left side view of fig. 1 with the housing hidden.

Fig. 8 is a right side view of the housing of fig. 1, with the housing removed.

Fig. 9 is a schematic structural diagram of the heat dissipation assembly in fig. 2.

Reference numerals:

a motor driver 100;

a housing 1; a first side plate 101; an air inlet 1011; an air outlet 102; a third side plate 103; a first outlet 1031; a fourth side panel 104; a second outlet 1041;

a heat dissipating component 2; a substrate 201;

a first avoidance port 2013; a first region 2014; a second region 2015; a first portion 20151; a second portion 20152; a middle portion 20153; an overflow aperture 201531; a third fin 2016; third air duct 20161; a first fin 202; a first air duct 2021; a second fin 203; a second air duct 2031; a fourth fin 204; a fourth air duct 2041; a connecting plate 205; a fastener 2051; a mounting frame 206; a first mounting portion 2061; a first connecting post 2062; a first fastener 2063; a second mounting portion 2064; a second connecting post 2065; a second fastener 2066; a reinforcing rib 2067; a positioning post 207;

a fan 3; a fan inlet 301; a fan outlet 302;

a control panel 4;

a second capacitor 5;

a second element 7;

a power board 8;

a first capacitor 9.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

A motor driver 100 according to an embodiment of the present invention will be described with reference to fig. 1 to 9.

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 housing chamber, and an air inlet 1011 and an air outlet 102 communicating with the housing chamber. The fan 3 is arranged in the accommodating cavity, the fan 3 is provided with a fan inlet and a fan outlet, and the fan inlet is communicated with the air inlet 1011.

The heat dissipation assembly 2 is arranged in the accommodating cavity, the heat dissipation assembly 2 comprises a plurality of first fins 202 and a plurality of second fins 203, the plurality of first fins 202 define a plurality of first air channels 2021, and the plurality of first air channels 2021 are parallel to each other; the plurality of second fins 203 define a plurality of second air channels 2031, the extending directions of the plurality of second air channels 2031 are different, and the first air channels 2021 and the second air channels 2031 are both communicated with the fan outlet.

Be equipped with air intake 1011 and air outlet 102 on the casing 1, be equipped with fan 3 in the casing 1, and the fan import of fan 3 and air intake 1011 intercommunication so that cooling fluid passes through fan 3 and gets into and hold the intracavity, and the cooling fluid that gets into and hold the intracavity passes through air outlet 102 and discharges.

When the motor driver 100 of the embodiment of the present invention operates, the electronic components in the accommodating cavity generate heat, the first fins 202 and the second fins 203 of the heat dissipation assembly 2 are used to exchange heat between the cooling fluid introduced by the fan 3 and the electronic components in the accommodating cavity, and after the cooling fluid flows out through the air outlet 102, the temperature of the electronic components in the accommodating cavity is reduced.

The heat sink assembly 2 includes a plurality of first fins 202, a plurality of first air channels 2021 formed by the first fins 202 in parallel, and a plurality of second fins 203, wherein the second air channels 2031 are uniformly distributed in the same extending direction by the second fins 203. The overall effective heat dissipation area of the heat sink assembly 2 is large, so that the heat dissipation performance of the heat sink assembly 2 is good, and each element of the motor driver 100 works at an appropriate temperature, which is beneficial to prolonging the service life of the motor driver 100 and improving the reliability of the motor driver 100.

Therefore, the motor driver 100 of the embodiment of the present invention has advantages of long service life, high reliability, and the like.

Alternatively, the cooling fluid may be air.

Alternatively, the fan inlet of the fan 3 is disposed opposite to the air inlet 1011, and the fan outlet of the fan 3 is disposed 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.

Optionally, the first fin 202 and the second fin 203 are both provided with positioning columns 207, the fan 3 is provided with positioning holes, and the positioning columns 207 are inserted into the positioning holes to position the fan 3 in the horizontal direction.

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

Further, the lower end face of the fan 3 abuts on the respective one of the first fin 202 and the second fin 203, and the upper end face of the fan 3 abuts on the housing 1 (the first side plate 101 in fig. 1), whereby the positioning of the fan 3 in the vertical direction is achieved.

In some embodiments, the receiving cavity includes a first cavity portion and a second cavity portion, which are arranged along the length direction of the heat dissipation assembly 2. The first fins 202 are disposed in the first cavity portion, the second fins 203 are disposed in the second cavity portion, and the extending direction of the first air duct 2021 is different from the extending direction of the second air duct 2031.

In order to make the technical solution of the present application easier to understand, the following further describes the technical solution of the present application by taking as an example that the thickness direction of the heat dissipation assembly 2 is consistent with the up-down direction, the length direction of the heat dissipation assembly 2 is consistent with the front-back direction, and the width direction of the heat dissipation assembly 2 is consistent with the left-right direction. Wherein the up-down direction, the front-back direction, and the left-right direction are as shown in fig. 1 to 5.

For example, as shown in fig. 4, the first cavity portion is disposed at the front side of the second cavity portion, each of the first air ducts 2021 extends in the left-right direction, one portion of the second air ducts 2031 extends in the front-rear direction, and the other portion of the second air ducts 2031 extends in the left-right direction.

Optionally, the heat dissipation assembly 2 includes a base plate 201, the base plate 201 is disposed in the accommodating cavity, the base plate 201 is connected to the housing 1, and the first fin 202 and the second fin 203 are both disposed on the base plate 201. The substrate 201 includes a first region 2014 and a second region 2015, the first region 2014 and the second region 2015 are arranged along the length direction (the front-rear direction shown in fig. 4) of the heat dissipation assembly 2, the first fins 202 are provided in the first region 2014, and the second fins 203 are provided in the second region 2015. Wherein the first region is disposed within the first cavity portion and the second region is disposed within the second cavity portion.

As shown in fig. 9, the first region 2014 is disposed behind the second region 2015, and correspondingly, the first fins 202 are disposed behind the second fins 203, and the extending direction of the first air duct 2021 is different from the extending direction of the second air duct 2031.

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.

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

In some embodiments, the plurality of first air ducts 2021 extend in the width direction (the left-right direction shown in fig. 4) of the heat dissipation assembly 2, the plurality of first fins 202 are arranged in a plurality of rows in the length direction (the front-back direction shown in fig. 4) of the heat dissipation assembly 2, and the plurality of rows of first fins 202 are arranged at intervals in the length direction (the front-back direction shown in fig. 4) of the heat dissipation assembly 2. This is advantageous in further increasing the heat radiation area of heat radiation unit 2 and improving the heat radiation performance of motor driver 100.

For example, as shown in fig. 4, the plurality of first fins 202 are arranged at intervals in the front-rear direction to form a plurality of rows of first fins 202, and the adjacent two rows of first fins 202 are arranged at intervals in the front-rear direction.

In some embodiments, each row of the first fins 202 includes a plurality of first fins 202, the plurality of first fins 202 located in the same row are arranged at intervals along the width direction (the left-right direction shown in fig. 4) of the heat dissipation assembly 2, and any two of the adjacent two rows of the first fins 202 are arranged in a staggered manner in the width direction (the left-right direction shown in fig. 4) of the heat dissipation assembly 2.

For example, as shown in fig. 4, in the two front and rear adjacent rows of the first fins 202, the first fin 202 located in the front row and any one of the first fins 202 located in the rear row are arranged to be offset 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 in a first direction, and the angle between the first direction and the length direction (the front-rear direction as shown in fig. 4) of the heat dissipation assembly 2 is less than 90 °. Therefore, the cooling fluid entering from the fan inlet enters each first air duct 2021 for heat dissipation, which is beneficial to further improve the heat dissipation performance of the motor driver 100.

Alternatively, the second fins 203 are rectangular plates, at least a portion of the second fins 203 extending in a direction away from the first fins 202.

Therefore, the second fin 203 is simple in structure and convenient to design and process.

Optionally, the plurality of second fins 203 are arranged at intervals in a diverging manner, and a second air channel 2031 is defined between two adjacent second fins 203.

For example, the plurality of second air paths 2031 extend in different directions.

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

For example, as shown in fig. 3 and 4, a first fin 202 and a second fin 203 are provided on the upper surface of the base plate 201.

Therefore, the cooling fluid flowing through the first air duct 2021 and the second capacitor 5 are used for thermal convection, so as to cool the second capacitor 5, which is beneficial to further improving the heat dissipation performance of the motor driver 100. In addition, the second capacitor 5 is installed in the first avoidance opening 2013, so that the motor driver 100 is compact in overall structure.

In some embodiments, the housing 1 includes a first side plate 101 and a third side plate 103, and 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, the third side plate 103 is disposed on one side of the heat dissipating module 2 in the width direction (the left-right direction shown in fig. 1), and the second capacitor is disposed closer to the third side plate 103 than the first fin 202 in the width direction (the left-right direction shown in fig. 1) of the heat dissipating module 2. The air outlet 102 includes a first air outlet 1031, the first air outlet 1031 is disposed on the third side plate 103, and the first air duct 2021 extends along a width direction (a left-right direction shown in fig. 1) of the heat dissipation assembly 2.

For example, as shown in fig. 1 and fig. 3, the first side plate 101 is disposed above the housing 1, and the air inlet 1011 is disposed on the first side plate 101, in other words, the air inlet 1011 is disposed 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 disposed 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 communicated with the air inlet 1011. Each of the first and

second fins

202, 203 is located below the fan outlet 302 such that each of the first and second air courses 2025, 2031 communicates with the fan outlet 302. So that the cooling fluid is quickly introduced into the first air path 2021 and the second air path 2031 through the air inlet 1011, the fan inlet 301 and the fan outlet 302 by the fan 3.

The third side plate 103 is a 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.

Optionally, the air outlet 102 is provided in plurality, and the plurality of air outlets 102 are arranged at intervals on the left side plate.

Therefore, when the cooling fluid flowing through the first air duct 2021 cools and dissipates heat to the second capacitor 5, the cooling fluid flowing through the second capacitor 5 can flow out of the first air outlet 1031 quickly, which is beneficial to improving the heat dissipation effect, and thus improving the reliability of the motor driver 100.

In some embodiments, the housing 1 includes a fourth side plate 104, and the second outlet 1041 is disposed on the fourth side plate 104. The fourth side plate 104 is a right side plate of the housing, so that the cooling airflow can be conveniently discharged from the second air outlet 1041 after dissipating heat from the electronic component disposed close to the right side plate of the housing 1.

In some embodiments, the motor driver 100 includes a control board 4, the control board 4 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.

As shown in fig. 3, the control plate 4 is disposed at the front end of the accommodating chamber, and the outlets of some of the second air paths 2031 face the control plate 4 or the outlets of all of the second air paths 2031 face the control plate 4.

Therefore, the cooling fluid flowing out of the second air duct 2031 can perform heat convection with the control board 4, so that the control board 4 is cooled by the cooling fluid flowing through the second air duct 2031, the heat of the control board 4 is dissipated, the operation stability of the control board 4 is improved, and the reliability of the motor driver 100 is further improved.

In some embodiments, as shown in fig. 4, the motor driver 100 includes a first capacitor 9, the first capacitor 9 is disposed below the control board 4, and an outlet of at least a portion of the second air duct 2031 faces the first capacitor 9.

Therefore, the cooling fluid flowing out of the second air duct 2031 can perform heat convection with the first capacitor 9, so that the first capacitor 9 is cooled by the cooling fluid flowing through the second air duct 2031, the first capacitor 9 dissipates heat, the operation stability of the first capacitor 9 is improved, and the reliability of the motor driver 100 is further improved. In addition, the first capacitor 9 is disposed below the control board 4, so that the overall structure of the motor driver 100 is compact, which is beneficial to reducing the overall volume of the motor driver 100.

In some embodiments, the heat dissipation assembly 2 includes a third fin 2016, the third fin 2016 being disposed outside of the second fin 203. The third fins 2016 and the first fins 202 are disposed on different sides of the second fins 203, a plurality of third air channels 20161 are defined among the third fins 2016, and the third air channels 20161 are communicated with the second air channels 2031.

For example, as shown in fig. 4, the third fins 2016 are provided on the left and right sides of the second fins 203, and the first fins 202 are provided on the rear side of the second fins 203. A plurality of third fins 2016 are spaced apart, with adjacent two of the third fins 2016 defining a third air duct 20161, the third air duct 20161 being in communication with the outlet of the second air duct 2031 such that cooling fluid flowing from the outlet of the second air duct 2031 can enter the third air duct 20161.

Therefore, the third fins 2016 are provided to increase the effective heat dissipation area of the heat dissipation assembly 2, and the third fins 2016 are used to further diffuse the cooling fluid, thereby improving the heat dissipation performance of the heat dissipation assembly 2.

Optionally, the third fin 2016 is a rectangular plate, the third fin 2016 extending in a direction away from the second fin 203.

From this, third fin 2016's simple structure, convenient design and processing.

Optionally, a plurality of third fins 2016 are arranged in parallel and spaced apart relation to each other, with adjacent third fins 2016 defining a third air duct 20161 therebetween.

For example, as shown in fig. 1 and 4, the third air ducts 20161 extend in the left-right direction and face the first air outlet 1031.

Therefore, the cooling fluid flowing through the third air duct 20161 can flow out quickly, which is beneficial to further improving the heat dissipation effect of the motor driver 100.

In some embodiments, the second fin 203 is provided on the upper surface of the substrate 201. The motor driver 100 includes a first element (not shown) and a second element 7, the first element and the second element 7 are both disposed in the accommodation chamber, the first element is disposed on the lower surface of the substrate 201, and the second element 7 is disposed below the substrate 201

For example, as shown in fig. 3, 7, and 9, a first fin 202 and a second fin 203 are fixed on an upper surface of a base plate 201, a first element is provided on a lower surface of the base plate 201, and the first element and the second fin 203 are arranged to be opposed to each other in an up-down direction.

Thus, heat generated by the first element during operation can be transferred to the base plate 201 by thermal conduction, and further transferred to the first fin 202, the second fin 203, and the third fin 2016 provided on the base plate 201 via the base plate 201. The cooling fluid entering the accommodating cavity can perform heat convection and heat conduction with the first fins 202, the second fins 203 and the third fins 2016, so that heat transferred from the first element to the heat dissipation assembly 2 is taken out of the housing 1, cooling and heat dissipation of the first element are realized, and reliability of the motor driver 100 is further improved.

Alternatively, the first element may be a high power consumption chip such as an IPM module, a rectifier bridge or an IGBT module, and the second element 7 may be a key device such as a diode, a power supply, a capacitor or a resistor.

In some embodiments, the substrate 201 includes a first portion 20151, a second portion 20152, and an intermediate portion 20153, the second portion 20152 being disposed higher than the first portion 20151, the second fin 203 being disposed on an upper surface of the first portion 20151. The third fin 2016 is disposed on the lower surface of the second portion 20152, the first element is disposed on the lower surface of the first portion 20151, and the second element 7 is disposed below the third fin 2016. One end of the middle portion 20153 is connected to the first portion 20151, the other end of the middle portion 20153 is connected to the second portion 20152, and the middle portion 20153 has an overflow hole 201531 communicating with the second air duct 2031.

For example, as shown in fig. 6 to 9, the second portion 20152 is located at the rear side of the first portion 20151, the first portion 20151 and the second portion 20152 both extend in the left-right direction, and an intermediate portion 20153 extending in the up-down direction is provided between the second portion 20152 and the first portion 20151, so that the first portion 20151, the intermediate portion 20153, and the second portion 20152 form a stepped structure. An overflow opening 201531 is provided in the intermediate portion 20153.

The middle portion 20153 has an overflow hole 201531 communicating with the second duct 2031 such that the overflow hole 201531 can communicate with the second duct 2031 and the third duct 20161 to facilitate the cooling fluid to enter the third duct 20161 from the second duct 2031 to perform forced convection heat exchange with the second element 7 and reduce the temperature of the second element 7.

In some embodiments, the second portions 20152 are provided in plurality, and the first portion 20151 is located between two of the second portions 20152 in a width direction (left-right direction as shown in fig. 6) of the heat dissipation assembly 2.

For example, as shown in fig. 6, the second portion 20152 is provided in two, and the first portion 20151 is located between the two second portions 20152.

From this, the second wind channel on first branch 20151 can communicate with the third wind channel on a plurality of second portions 20152 to can cool off the heat dissipation respectively through the cooling fluid of flowing through every second portion 20152 to a plurality of different second elements 7, be favorable to further improving motor driver 100's reliability.

It is noted that the second element 7 corresponding to each second portion 20152 may be one or more, and the third fins 2016 on each second portion 20152 correspond to at least one second element 7.

In some embodiments, the third fin 2016 is disposed closer to the third side plate 103 than the second fin 203 in the width direction (left-right direction as viewed in fig. 1) of the heat dissipation assembly 2. The air outlet 102 includes a first air outlet 1031, the first air outlet 1031 is disposed on the third side plate 103, the third air duct 20161 extends along the width direction (left-right direction shown in fig. 1) of the heat dissipation assembly 2, and an outlet of the third air duct 20161 is disposed corresponding to the first air outlet 1031 in the width direction of the heat dissipation assembly 2.

For example, as shown in fig. 1 to fig. 3, the cooling fluid flowing through the third air duct 20161 can flow out of the air outlet 102, so as to increase the heat exchange efficiency, and further improve the heat dissipation effect of the heat dissipation assembly 2.

Alternatively, the plurality of third fins 2016 may extend in the same direction, and the plurality of third fins 2016 may extend in the left-right direction.

In some embodiments, the heat dissipation assembly 2 includes a plurality of fourth fins 204, the fourth fins 204 are disposed on the outer side of the second fins 203, and the first fins 202 and the fourth fins 204 are disposed 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 communicated with the second air ducts 2031, and outlets of the fourth air ducts 2041 face the control board 4.

For example, as shown in fig. 4, the first fin 202 is provided on the rear side of the second fin 203, and the fourth fin 204 is provided on the front side of the second fin 203. Therefore, the effective heat dissipation area of the heat dissipation assembly 2 can be increased by using the fourth fins 204, which is beneficial to improving the heat dissipation effect of the control board 4 and further improving the reliability of the motor driver 100.

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

In some embodiments, at least a portion of the first fins 202 extend outwardly into the fourth air chute 2041.

For example, as shown in FIG. 4, a portion of the second fins 203 extends forwardly into the fourth air duct 2041. This can increase the effective heat radiation area of the heat radiation unit 2, and further improve the heat radiation efficiency of the motor driver 100.

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

Therefore, the fourth fin 204 is simple in structure and convenient to design and process.

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.

In some embodiments, the heat sink assembly 2 includes a connection plate 205, the connection plate 205 is connected to the substrate 201, a buckle 2051 is provided on one of the housing 1 and the connection plate 205, and a slot is provided on the other of the housing 1 and the connection plate 205, and the buckle 2051 is snap-fitted to the slot so that the substrate 201 is connected to the housing 1.

For example, as shown in fig. 1 and 4, the connecting plate 205 extends in the up-down direction, the front end surface of the connecting plate 205 is provided with a buckle 2051, the housing 1 is provided with a clamping groove, and the buckle 2051 is in clamping fit with the clamping groove to realize the connection between the substrate 201 and the housing 1, so that the substrate 201 is connected with the housing 1 conveniently, which is beneficial to improving the assembly efficiency of the motor driver 100.

Of course, a clamping groove can be arranged on the connecting plate, and a buckle can be arranged on the shell.

Optionally, the connection plate 205 and the base plate 201 are of an integrated structure, which is beneficial to improving the processing efficiency of the motor driver 100. In addition, the connection plate 205 and the substrate 201 are of an integrated structure, which is beneficial to enhancing the overall strength of the connection plate 205 and the substrate 201, thereby further improving the reliability of the motor driver 100.

The case 1 further includes second and fourth side plates 104, the first and

second side plates

101 and 104 being arranged oppositely in the front-rear direction, and the third and

fourth side plates

103 and 104 being arranged first in pair in the left-right direction.

Optionally, the first side plate 101, the second side plate, the third side plate 103 and the fourth side plate 104 are of an integral 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 front and rear ends. The left side and the right side of the connecting plate 205 are respectively provided with a buckle 2051, the third side plate 103 and the fourth side plate 104 are respectively provided with a clamping groove, the buckle 2051 on the left side is in clamping fit with the clamping groove on the third side plate 103, and the buckle 2051 on the right side is in clamping fit with the clamping groove on the fourth side plate 104. So that 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 an accommodating space.

As shown in fig. 4 and 5, the motor driver 100 in the embodiment of the present invention includes the power board 8, and in the embodiment of the present invention, the motor driver 100 further includes the power board 8, and the power board 8 is disposed in the accommodating cavity. The second capacitor 5, the first capacitor 9 and the second element 7 are all arranged on the power plate 8.

In the embodiment of the present invention, the motor driver 100 includes a mounting bracket 206, the mounting bracket 206 is disposed in the accommodating cavity, and the mounting bracket 206 is connected to the base plate 201. The mount 206 includes a first mount portion 2061 and a second mount portion 2064 facing each other in the thickness direction of the substrate 201, the control board 4 is provided on the first mount portion 2061, and a part of the power board 8 is provided on the second mount portion 2064.

Alternatively, as shown in fig. 3, the first mounting portion 2061 is a first connecting post 2062, the second mounting portion 2064 is a second connecting post 2065, the control board 4 is connected to the first connecting post 2062 by a first fastener 2063, and the power board 8 is connected to the second connecting post 2065 by a second fastener 2066.

Specifically, the first fastener 2063 is a first screw, and the second fastener 2066 is a second screw. Be equipped with first connecting hole on the control panel 4, be equipped with first screw hole on the first connector post 2062, first screw punch a hole first connecting hole and with first screw hole threaded connection to fix control panel 4 on mounting bracket 206. The power board 8 is provided with a second connecting hole, the second connecting post 2065 is provided with a second threaded hole, and a second screw passes through the second connecting hole and is in threaded connection with the second threaded hole, so that the power board 8 is fixed on the mounting frame 206.

For example, as shown in fig. 3, the first mounting portion 2061 is located on the upper surface of the mounting block 206, the second mounting portion 2064 is located on the lower surface of the mounting block 206, the control board 4 is mounted above the mounting block 206, and the power board 8 is mounted below the mounting block 206.

Alternatively, as shown in fig. 4, the base plate 201 and the mounting frame 206 are of an integrated structure, thereby facilitating the processing efficiency of the motor driver 100. In addition, the base plate 201 and the mounting frame 206 are of an integrated structure, which is beneficial to enhancing the overall strength of the mounting frame 206 and the base plate 201, thereby further improving the reliability of the motor driver 100.

Optionally, the mounting frame 206 is a mounting frame, and 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 satisfying 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 chamber.

Optionally, a stiffener 2067 is provided on the mounting bracket 206. Thus, the reinforcing ribs 2067 can improve the overall strength of the mount 206.

Optionally, the base plate 201 and the mounting frame 206 are of a unitary structure.

The motor driving system comprises a motor and a motor driver, wherein the motor driver is connected with the motor and is used for driving the motor to run. The motor driver is the motor driver 100 according to any embodiment.

Therefore, the motor driving system provided by the embodiment of the invention has the advantages of long service life, high reliability and the like.

The chip mounter comprises a rack, a chip mounting device and a motor driving system, wherein the chip mounting device and the motor driving system are arranged on the rack, the motor driving system is connected with the chip mounting device, and the chip mounting device is driven to move by the motor driving system. The motor driving system is the motor driving system described in any of the above embodiments.

Therefore, the chip mounter provided by the embodiment of the invention has the advantages of long service life, high reliability and the like.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A motor driver, comprising:

the heat dissipation assembly is arranged in the accommodating cavity and comprises a plurality of first fins and a plurality of second fins, the first fins define a plurality of first air channels, the first air channels are parallel to each other and are multiple, the second fins define a plurality of second air channels, the second air channels are multiple, the extending directions of at least one part of the second air channels are different, and the first air channels and the second air channels are communicated with the fan outlet.

2. The motor driver according to claim 1, wherein the heat dissipation assembly includes a third fin, the third fin is disposed outside the second fin, the third fin and the first fin are disposed on different sides of the second fin, a plurality of third air channels are defined between the third fins, and the third air channels are communicated with the second air channels.

3. The motor driver of claim 2, wherein the heat sink assembly includes a base plate disposed within the receiving cavity, the base plate being coupled to the housing, the second fin being disposed on an upper surface of the base plate;

4. The motor driver of claim 3, wherein the base plate includes a first portion and a second portion, the second portion being disposed higher than the first portion, the second fins being disposed on an upper surface of the first portion, the third fins being disposed on a lower surface of the second portion, the first element being disposed on a lower surface of the first portion, the second element being disposed below the third fins; and

5. The motor driver according to claim 4, wherein a plurality of the second portions are provided, and the first portion is located between two of the second portions in a width direction of the heat dissipation assembly.

6. The motor drive of any one of claims 1-5, comprising a control board disposed within the receiving cavity, at least a portion of the outlet of the second air duct being directed toward the control board.

7. The motor driver of claim 6, wherein the heat dissipation assembly includes a plurality of fourth fins, the fourth fins are disposed on outer sides of the second fins, the first fins and the fourth fins are disposed on different sides of the second fins, the plurality of fourth fins define a plurality of fourth air channels, the fourth air channels are communicated with the second air channels, and outlets of the fourth air channels face the control board.

8. The motor driver of claim 7, wherein at least some of the fourth air paths extend in different directions.

9. The motor drive of claim 7, wherein at least a portion of the first fin extends outwardly into the fourth wind tunnel.

10. The motor driver according to any one of claims 1 to 5, wherein a plurality of the first air ducts extend in a width direction of the heat dissipation assembly, a plurality of the first fins are arranged in a plurality of rows in a length direction of the heat dissipation assembly, and the plurality of rows of the first fins are arranged at intervals in the length direction of the heat dissipation assembly.

11. The motor driver according to claim 10, wherein each row of the first fins includes a plurality of the first fins, the plurality of the first fins located in the same row are arranged at intervals in a width direction of the heat dissipation assembly, and any two of the first fins in two adjacent rows are arranged to be staggered in the width direction of the heat dissipation assembly.

12. The motor drive of any of claims 1-5, wherein the second fins are rectangular plates, at least a portion of the second fins extending in a direction away from the first fins.

13. The motor driver as claimed in claim 12, wherein a plurality of said second fins are arranged at a divergent interval, and one said second air passage is defined between adjacent two of said second fins.

14. The motor drive of any of claims 2-5, wherein the third fin is a rectangular plate, the third fin extending in a direction away from the second fin.

15. The motor driver of claim 14, wherein a plurality of said third fins are arranged in parallel and spaced apart relation to each other, and wherein adjacent ones of said third fins define one of said third air channels therebetween.

16. The motor drive of claim 7, wherein the fourth fin is a rectangular plate, the fourth fin extending in a direction away from the second fin.

17. The motor driver of claim 16, wherein a plurality of said fourth fins are spaced apart, and adjacent ones of said fourth fins define one of said fourth air channels therebetween.

18. The motor drive of claim 6, comprising a first capacitor disposed below the control board, wherein at least a portion of the outlet of the second air duct faces the first capacitor.

19. The motor drive of any of claims 2-5, wherein the housing comprises:

the first side plate is arranged above the heat dissipation assembly, and the air inlet is formed in the first side plate; and

the third side plate is arranged on one side of the width direction of the heat dissipation assembly, the third fins are arranged on the width direction of the heat dissipation assembly and are closer to the third side plate relative to the second fins, the air outlet comprises a first air outlet, the first air outlet is arranged on the third side plate, the third air channel extends along the width direction of the heat dissipation assembly, and an outlet of the third air channel corresponds to the first air outlet in the width direction of the heat dissipation assembly.

20. The motor driver of claim 19, wherein the fan is located below the first side plate, the fan inlet and the fan outlet are disposed opposite in an up-down direction, the fan outlet is located below the fan inlet, the fan inlet is located below the air intake such that the fan inlet communicates with the air intake, and the first fin and the second fin are located below the fan outlet such that each of the first air passage and the second air passage communicates with the fan outlet.

21. The motor driver of claim 1, wherein the heat sink assembly includes a base plate disposed within the cavity, the base plate being coupled to the housing, the first and second fins being disposed on the base plate;

22. The motor drive of claim 21, wherein the housing comprises:

the third side plate is arranged on one side of the width direction of the heat dissipation assembly, the second capacitor is arranged on the third side plate in the width direction of the heat dissipation assembly and is closer to the first fin, the air outlet comprises a first air outlet, the first air outlet is arranged on the third side plate, the first air channel extends along the width direction of the heat dissipation assembly, and an outlet of the first air channel is arranged in the width direction of the heat dissipation assembly and corresponds to the first air outlet.

23. The motor driver of claim 21, wherein the base plate includes a first region and a second region, the first region and the second region are arranged along a length direction of the heat dissipation assembly, the first fin is disposed at the first region, the second fin is disposed at the second region, and an extending direction of the first air channel is different from an extending direction of the second air channel.

24. The motor driver according to any one of claims 3 to 5, wherein the heat dissipation assembly includes a connection plate, the connection plate is connected to the base plate, one of the housing and the connection plate is provided with a clip, and the other of the housing and the connection plate is provided with a slot, and the clip is snap-fitted to the slot so that the base plate is connected to the housing.

25. A motor drive system, comprising:

a motor; and

a motor driver connected with the motor to drive the motor to operate, wherein the motor driver is the motor driver according to any one of claims 1 to 24.

26. A chip mounter, comprising:

a patch device; and

a motor drive system coupled to the placement device for driving movement of the placement device, the motor drive system being in accordance with claim 25.