CN212649948U - Radiator and servo driver - Google Patents

Abstract

The utility model discloses a radiator and servo driver belongs to servo drive equipment technical field. The utility model discloses a radiator, be equipped with a plurality of first radiating fin in the first region of base, be provided with a plurality of second radiating fin in the second region, first radiating fin is parallel to the setting of second radiating fin; first breach and the second breach of intercommunication each other are seted up along the first direction on the first radiating fin, the first breach cooperation of a plurality of first radiating fins forms the mounting groove that is used for installing the fan, the second breach cooperation of a plurality of first radiating fins forms the wind groove, make the fan that the negative pressure side set up towards the wind groove when dispelling the heat, the air in the different wind channels can be in wind groove department and a plurality of first radiating fins heat transfer, thereby prevent that the temperature of the interior wind groove department of first region is local too high, and then whole radiating efficiency who has improved the radiator. The utility model discloses a servo driver, simple structure, the radiating efficiency is higher.

Description

Radiator and servo driver

Technical Field

The utility model relates to a servo drive equipment technical field, more specifically say, relate to a radiator and servo driver.

Background

As a closed-loop control system for controlling the rotation of a motor, an alternating current servo system has the advantages of high dynamic performance, high position precision, good low-speed torque performance and the like. Among them, a servo driver in an ac servo system is one of important functional units, and the servo driver is also called a servo controller or a servo amplifier. The servo driver is mainly used for receiving an instruction sent by a servo upper control system and accurately controlling the motor to rotate.

Specifically, the servo driver can be regarded as a special frequency converter, which comprises a rectifying unit, a filtering unit, an inverting unit, a control unit, a driving unit, a braking unit and the like, and simultaneously, the voltage and the frequency of an output power supply are adjusted through the on-off of an internal IGBT (insulated gate bipolar transistor), namely, an insulated gate bipolar transistor, and the voltage and the frequency are provided for the motor according to the actual requirement of the motor, so that the purposes of energy conservation and speed regulation are achieved.

The servo driver continuously converts energy during operation, and usually generates a certain loss during the energy conversion process, and the lost energy is mostly dissipated in the form of heat. Therefore, if the heat dissipation of the servo driver is not timely, or the heat dissipation effect is not good, or the heat dissipation is not uniform, which causes local overheating, the ambient temperature is higher than the working junction temperature of the components inside the servo driver, which causes the damage of the components and reduces the service life of the servo driver.

For solving the not good problem of servo driver heat dispersion, in the correlation field, set up radiating fin on servo driver's base usually, through the heat transfer area of increase radiating piece and refrigerant to improve heat exchange efficiency, wherein the refrigerant is mostly the air. For example, the invention provides a chinese patent document entitled heat sink and servo driver (application No. 2017113362536), the heat sink of the application includes a base and a heat dissipating portion, the base is provided with a first mounting portion for mounting a first predetermined structure; the radiating part is provided with radiating fin, and radiating fin installs on the base to separate through baffle and first installation department, be provided with the ventilation hole on the baffle, the ventilation hole is used for communicateing radiating part and first installation department.

In addition, in the related art, a fan is disposed on the base to improve the heat dissipation efficiency of the servo driver. For example, the invention provides a chinese patent document entitled servo driver housing and servo driver (application No. 2018215818967) with high heat dissipation efficiency, the servo driver housing of the application includes a base, the base includes a base bottom plate and a base middle frame, the base middle frame is vertically installed on the base bottom plate, a front cover plate is installed on the base; the rear cover plate is installed on the base, and the upper cover plate is installed above the middle frame of the base and is fixed through the front cover plate and the rear cover plate. The base is provided with a cooling fan, and the cooling fan accelerates the air flow in the servo driver and simultaneously improves the cooling effect of cooling fins and a cast aluminum radiator arranged on the middle frame of the base.

Meanwhile, in the related field, two heat dissipation modes are combined, and the circulation rate of the refrigerant of the fin piece is increased by arranging the fan on the heat dissipation fins, so that the heat dissipation efficiency of the servo driver is further improved. For example, the present invention relates to a chinese patent document named as a servo motor driver (application No. 2017211701184), wherein a driver body of the application is further provided with a temperature detection device, and further comprises a comparison device, a control device, and a starting device coupled to the control device for receiving a control signal and responding to the control signal to start a fan: the driver body is also provided with a mounting box for mounting the temperature detection device, and the driver body is also provided with a radiating fin for mounting the fan.

However, if the plurality of fins are provided with the openings and the plurality of fins form the mounting grooves at the openings, and the fans are directly mounted in the mounting grooves, air channels formed among the fins are mutually independent, and air flow rates circulating in different air channels are different, so that hot air backflow is easily caused, and the heat dissipation efficiency of the radiator is reduced; in addition, the air flow velocity flowing in different air channels is different, so that the temperature difference exists among the fins, the local overheating on the base is caused, the local temperature of the base is easily caused to exceed the junction temperature of the components in the servo driver, and the damage to the components is caused.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved by the utility model

An object of the utility model is to overcome among the prior art not high and cause the not enough of damage to components and parts wherein easily of servo driver's radiating efficiency, provide a radiator. The radiator of this scheme sets up the fan through on the radiating fin to set up the wind groove between fan and base, make different wind channels between the radiating fin communicate with each other, prevent that the air velocity of circulation is different in the different wind channels and lead to local overheat on the base, improved the radiating efficiency of radiator.

Another object of the utility model is to provide a servo driver, the base of its upper housing and side casing and radiator is to closing to be connected and is formed with and is used for drive plate and control panel cavity, is provided with the fan on the radiating fin of base, simple structure, and the radiating efficiency is higher.

2. Technical scheme

In order to achieve the above purpose, the utility model provides a technical scheme does:

the utility model relates to a radiator, which comprises a base, wherein a first side surface of the base is provided with a heat radiation module, a second side surface of the base is used for installing a driving plate, the heat radiation module comprises,

the fan comprises at least one first area, wherein a plurality of first radiating fins are arranged in the first area in parallel, a first notch and a second notch which are mutually communicated are formed in each first radiating fin along a first direction, the first notches of the plurality of first radiating fins are matched to form an installation groove for installing a fan, the second notches of the plurality of first radiating fins are matched to form an air groove, and the negative pressure side of the fan faces the air groove; and the number of the first and second groups,

the heat dissipation structure comprises at least one second area, wherein at least one second heat dissipation fin is arranged in the second area, and the second heat dissipation fin is parallel to the first heat dissipation fin.

Further, the width of the first notch in the second direction is greater than the width of the second notch in the second direction.

Furthermore, a first table top is formed between the first notch and the second notch, and the first table top is parallel to the first side face of the base.

Further, the shape of the mounting groove corresponds to the shape of the fan.

Furthermore, a mounting rib is arranged on the first heat dissipation fin located on the outermost side of the first area, and a mounting hole is formed in the mounting rib.

Furthermore, a third heat dissipation fin is arranged outside at least one of two sides of the first area in the third direction, a third notch is formed in the third heat dissipation fin, and the third notch corresponds to the first notch in position and has the same structure;

and the third radiating fins are provided with mounting ribs, and the mounting ribs are provided with mounting holes.

Further, the width of the second notch of the first heat dissipation fin positioned in the middle of the plurality of first heat dissipation fins in the second direction is greater than the width of the second notches of the first heat dissipation fins positioned at two sides in the second direction.

Further, the air duct is of a circular structure.

Furthermore, a resistance groove is formed in the second side face, and the resistance groove is used for embedding the power discharge resistor.

The utility model discloses a servo driver, including radiator, upper housing and side casing and the base of radiator involutory connection form the cavity, the drive plate and control panel have been put to the intracavity; the radiator is the radiator;

the driving board is attached to the base, and the position of the fan on the base corresponds to the position of the heating area of the driving board.

3. Advantageous effects

Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:

(1) the utility model discloses a radiator, be equipped with a plurality of first radiating fin in the first region of base, be provided with a plurality of second radiating fin in the second region, first radiating fin is parallel to the setting of second radiating fin; first breach and the second breach of intercommunication each other are seted up along the first direction on the first radiating fin, the first breach cooperation of a plurality of first radiating fins forms the mounting groove that is used for installing the fan, the second breach cooperation of a plurality of first radiating fins forms the wind groove, make the fan that the negative pressure side set up towards the wind groove when dispelling the heat, the air in the different wind channels can be in wind groove department and a plurality of first radiating fins heat transfer, thereby prevent that the temperature of the interior wind groove department of first region is local too high, and then whole radiating efficiency who has improved the radiator.

(2) In the utility model, a resistance groove is arranged on the second side surface of the base, and the power discharge resistor is embedded in the resistance groove; when servo motor scram, the power that is used for unloading the instantaneous power unloads discharge and hinders sharply generating heat, and the utility model discloses a power is unloaded discharge and is hindered and has greatly increased the power through inlaying the area of contact that establishes on the base and unload resistance and base to improve the power and unload the heat transfer efficiency between resistance and the base, improve the radiating efficiency of radiator, prevent that servo motor scram time base's local high temperature from unloading discharge and hinder and other components and parts with the damage power.

(3) The utility model discloses a servo driver, the base of casing and side casing and radiator on it is to closing to be connected and be formed with the cavity that is used for holding drive plate and control panel, is provided with the fan on the fin of radiator, and the fin is formed with the wind groove in the position department of fan negative pressure side to make the wind channel between the fin communicate each other, prevent that the base from local overheat and fan hot-blast backward flow so that the components and parts in the cavity take place to damage because of the temperature is high.

Drawings

Fig. 1 is a schematic view of the structure of the heat sink of the present invention;

fig. 2 is a schematic structural view of a first heat dissipation fin of the present invention;

fig. 3 is a schematic structural view of a third heat dissipation fin of the present invention;

FIG. 4 is a schematic structural view of a middle resistor groove according to the present invention;

fig. 5 is a schematic structural diagram of the servo driver of the present invention.

The reference numerals in the schematic drawings illustrate: 100. a base; 101. a connecting plate; 102. connecting holes; 103. connecting columns; 110. a first heat radiation fin; 111. a first notch; 112. a first table top; 113. a first inclined plane; 114. a second notch; 115. a second table top; 116. a second inclined plane; 117. installing ribs; 118. mounting holes; 120. a second heat radiation fin; 130. a third heat radiation fin; 131. a third notch; 140. a resistance slot; 200. an upper housing; 300. a side housing; 400. a fan; 500. a drive plate; 600. and a control panel.

Detailed Description

For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings and examples.

The structure, ratio, size and the like shown in the drawings of the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention does not have the substantial significance in the technology, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy which can be produced by the present invention and the achievable purpose. In addition, the terms "upper", "lower", "left", "right" and "middle" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

Referring to fig. 1, the heat sink according to the present embodiment is attached to a servo driver and used to dissipate heat from the servo driver. Specifically, the heat sink of the present embodiment includes a base 100, and a heat dissipation module disposed in parallel on a first side of the base 100. The radiating module is internally provided with a plurality of fins, the height direction of the fins is the first direction, the length direction of the fins is the second direction, and the thickness direction of the fins is the third direction.

The adjacent fins have gaps in the third direction, the gaps are circulation channels of the refrigerant, and when the refrigerant is air, the circulation channels are air channels. The spacing between adjacent fins may be the same.

The heating efficiency of each component in the servo driver is different, so that the temperature of the surface of the base is different. Therefore, the plurality of fins may be divided into the first heat dissipation fins 110 located at the first region and the second heat dissipation fins 120 located at the second region according to the functional division. The first area is a high-temperature heating area, the temperatures of different positions in the first area are different, and the second area is a common heating area.

The second heat dissipation fins 120 located in the common heating area can transfer heat on the base to the refrigerant, thereby achieving a heat dissipation function; the first heat dissipation fins 110 located in the high temperature heating area have a higher temperature, and the efficiency of the heat transfer process between the first heat dissipation fins 110 and the refrigerant is not sufficient to lower the temperature of the high temperature heating area below the junction temperature of the components, so the first heat dissipation fins 110 of the present embodiment are further provided with the fan 400, and the flow rate of the refrigerant in the circulation channel is accelerated by the fan 400, thereby improving the heat dissipation efficiency of the first heat dissipation fins 110.

Specifically, as an embodiment, the plurality of second heat dissipation fins 120 are disposed parallel to each other and arranged along the third direction. A plurality of first heat dissipation fins 110 are disposed between two second heat dissipation fins 120 of the plurality of second heat dissipation fins 120, that is, the plurality of first heat dissipation fins 110 are disposed in parallel, and at least one second heat dissipation fin 120 is disposed outside the plurality of first heat dissipation fins 110. At this time, the second regions are set to be two, and the first region is located between the two second regions; the first heat dissipation fins 110 and the second heat dissipation fins 120 are arranged in parallel with each other.

As another embodiment, the second area may be provided as only one, and the first area and the second area are provided in parallel with each other; alternatively, the first area may be provided in plural while the first area is provided in one or more.

The first heat dissipation fins 110 in the first region may be formed with a plurality of first notches and second notches in a group, so that a plurality of fans 400 can be installed in the first region. That is, it can be understood that one fan 400 and the first heat dissipation fins 110 for mounting the fan 400 may be one first region, and different fans 400 may share the same plurality of first heat dissipation fins 110.

Referring to fig. 2, the first heat dissipation fin 110 has a first notch 111 and a second notch 114 formed in a first direction, and the first notch 111 and the second notch 114 are communicated with each other to form a same notch. Specifically, the first notch 111 is opened from the upper edge of the first heat dissipating fin 110, and extends toward the lower edge of the first heat dissipating fin 110; the second notch 114 is opened on the basis of the first notch 111 and continues to extend toward the lower edge of the first heat dissipating fin 110.

The first notches 111 of the first heat dissipation fins 110 are matched to form a mounting groove for mounting the fan 400; the second notches 114 of the first heat dissipation fins 110 cooperate to form air grooves, and the air grooves are located below the mounting groove in the first direction, so that the negative pressure side of the fan 400 can be disposed toward the air grooves after the fan 400 is mounted on the mounting groove.

When the fan 400 works, air in the air channel on the negative pressure side of the fan 400 is pumped away to form a negative pressure environment, so that air on two sides of the fan 400 in the air channel flows to the air channel, the circulation speed of air between the first cooling fins 110 is increased, and the cooling efficiency of the first cooling fins 110 is improved.

Due to the existence of the second gap 114, different air channels among the plurality of first heat dissipation fins 110 are communicated with each other at the air channel, so that hot air in different air channels can exchange heat with the plurality of first heat dissipation fins 110 in the air channel, and the base 100 is prevented from being locally overheated.

For example, in one embodiment, the temperature of the first heat dissipation fins 110 located at the middle position of the first region is relatively high, the temperature of the first heat dissipation fins 110 located at the two side positions of the first region is relatively low, and the air after heat exchange with the first heat dissipation fins 110 with lower temperature can continue to exchange heat with the first heat dissipation fins 110 with higher temperature at the air slots, so as to further reduce the temperature difference between the first heat dissipation fins 110 in the first region, so that the temperature of the base 100 at the first region is relatively converged.

In contrast, in a comparative example, the first heat dissipating fins 110 are not provided with the second notches, and the air ducts in the first area are independently arranged, so that in order to reduce the temperature at the highest temperature in the first area, the power of the fan 400 can only be increased to simultaneously accelerate the air flow rate in each air duct, the absolute temperature of each first heat dissipating fin 110 is simultaneously reduced, and the relative temperature between each first heat dissipating fin 110 tends to be constant. Thus, the heat sink of this comparative example consumes relatively more energy to achieve the technical effects of the present embodiment.

In addition, due to the mixing of the hot air, the hot air exhausted by the fan 400 is prevented from flowing back to the air passage due to the difference of air flow rates in different air passages, and the heat dissipation efficiency of the heat sink is improved.

The width of the first notch 111 in the second direction may be greater than the width of the second notch 114 in the second direction, so that a mounting table is formed at the connection position of the first notch 111 and the second notch 114, so that the housing of the fan 400 can be placed on the first heat dissipation fin 110, and the fan is prevented from shaking during operation.

Specifically, a first mesa 112 is formed between the first notch 111 and the second notch 114, a second mesa 115 is formed between the second notch 114 and the first heat dissipation fin 110, a first inclined surface 113 is connected between the first mesa 112 and the upper edge of the first heat dissipation fin 110, and a second inclined surface 116 is connected between the first mesa 112 and the second mesa 115.

Wherein, the second table surface 115 may be disposed parallel to the upper side of the base 100, and the second inclined surface 116 may be disposed perpendicular to the upper side of the base 100; the first table 112 is disposed parallel to the upper side of the base 100, and the first inclined plane 113 is disposed perpendicular to the upper side of the base 100, so that the shape of the mounting groove formed by the first notches 111 of the plurality of first heat dissipation fins 110 corresponds to the shape of the fan 400.

The shape of the second notch 114 may be set according to the air discharge characteristic of the fan 400, for example, the width of the second notch 114 of the first heat dissipation fin 110 located in the middle among the plurality of first heat dissipation fins 110 in the second direction may be greater than the width of the second notches 114 of the first heat dissipation fins 110 located at both sides in the second direction, so that the air grooves formed by matching the plurality of second notches 114 can make the air in different air channels gather and mix toward the middle of the air groove more easily, the air discharge efficiency of the fan 400 is improved, and further, the heat dissipation efficiency of the heat sink is improved. Specifically, the shape of the air groove may be circular so as to fit with the air discharge characteristic of the fan 400.

In order to facilitate the installation of the fan 400, as an embodiment, the first heat dissipating fin 110 located at the outermost side in the first area is provided with the installation rib 117, that is, the first heat dissipating fin 110 adjacent to the second heat dissipating fin 120 among the plurality of first heat dissipating fins 110 is provided with the installation rib 117. The mounting ribs 117 are disposed perpendicular to the upper side of the base 100, the mounting ribs 117 are provided with mounting holes 118, the mounting holes 118 can be provided with internal threads, and the fan 400 is connected with the base 100 by connecting bolts penetrating through the housing of the fan 400 and screwing into the mounting holes 118.

As another embodiment, a third heat dissipation fin 130 may be disposed between the first heat dissipation fin 110 and the second heat dissipation fin 120. Referring to fig. 3, the third heat dissipating fin 130 is provided with a third notch 131, and the position of the third notch 131 corresponds to the position of the first notch 111. When the fan 400 is mounted on the base 100, the rim of the fan 400 is located on the third notch 131, and the outer sidewall of the rim is flush with the outer sidewall of the third heat dissipating fin 130. In this case, instead of providing the mounting rib 117 on the outermost first heat dissipating fin 110, the mounting rib 117 may be provided on the third heat dissipating fin 130, and the mounting hole 118 may be provided in the mounting rib 117.

Further, as another embodiment, the third heat dissipation fins 130 are disposed on one side of both sides in the third direction in the first region, and the third heat dissipation fins 130 are not disposed on the other side. The third radiation fins 130 have the same mounting function to the fan 400 as the outermost first radiation fins 110 in the first region.

Referring to fig. 4, a plurality of connection columns 103 are provided on the second side of the base 100, the connection columns 103 being used to connect the base 100 to the upper housing 200 of the servo driver; the second side of the base 100 is provided with a resistance groove 140, the resistance groove 140 is used for embedding a power discharge resistor, when the servo motor is in an emergency stop, the power discharge resistor for discharging instantaneous power rapidly generates heat, and the power discharge resistor of the utility model greatly increases the contact area between the power discharge resistor and the base by embedding the power discharge resistor on the base, thereby improving the heat transfer efficiency between the power discharge resistor and the base, improving the heat dissipation efficiency of a radiator, and preventing the local temperature of the base from being too high to damage the power discharge resistor and other components when the servo motor is in the emergency stop; a connection plate 101 is disposed on the third side of the base 100, and a connection hole 102 is disposed on the connection plate 101, and the connection plate 101 is used for connecting the servo driver to the servo motor.

Referring to fig. 5, the present embodiment further provides a servo driver, which includes a heat sink, an upper case 200 and a side case 300, wherein the upper case 200 and the side case 300 are connected to the base 100 of the heat sink in an involution manner to form a case of the servo driver, and a cavity is formed in the case and is used for accommodating the driving board 500 and the control board 600.

The driving board 500 has fault detection protection circuits for overvoltage, overcurrent, overheat, undervoltage, etc., and mainly generates a driving signal meeting the requirements through a driving circuit by using a Central Processing Unit (CPU) to generate PWM pulses; the driving signal excites an Insulated Gate Bipolar Transistor (IGBT) to output voltage; the drive plate is required to keep moving all the time in the whole operation process of the servo driver, so the heating value of the drive plate is high. In order to improve the heat dissipation efficiency of the heat sink with respect to the driving board 500, the driving board 500 may be attached to the base 100, and the position of the fan 400 on the base 100 corresponds to the position of the high temperature heat generation region of the driving board 500.

The control board 600 is provided with a CPU, and the control board 600 is used for processing various signals and control programs, and is one of the most critical components in the server. Based on the influence of the manufacturing process of the CPU, the working environment of the CPU is not too high so as to avoid influencing the performance of the CPU.

It should be noted that the driving board and the control board can be components commonly used in servo drivers in the related art, and the specific structure and circuit thereof can be implemented according to the disclosure of the prior art, such as the servo drivers disclosed in chinese patent application nos. 2017113362536, 2018215818967 and 2017211701184. The structures of the driving board and the control board and the circuit composition thereof are not the main improvement points of the embodiment, and therefore, the related contents are not described in detail in the embodiment.

The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.

Claims (10)

1. A heat sink, comprising a base (100), a heat dissipation module being provided on a first side of the base (100), a second side of the base (100) being used for mounting a driving board (500), characterized in that: the heat dissipation module comprises a heat dissipation module and a heat dissipation module,

the fan comprises at least one first area, wherein a plurality of first radiating fins (110) are arranged in the first area in parallel, a first notch (111) and a second notch (114) which are communicated with each other are formed in the first radiating fins (110) along a first direction, the first notches (111) of the first radiating fins (110) are matched to form a mounting groove for mounting a fan (400), the second notches (114) of the first radiating fins (110) are matched to form an air groove, and the negative pressure side of the fan (400) faces the air groove; and the number of the first and second groups,

at least one second area, at least one second radiating fin (120) is arranged in the second area, and the second radiating fin (120) is arranged in parallel to the first radiating fin (110).

2. A heat sink according to claim 1, wherein: the width of the first notch (111) in the second direction is greater than the width of the second notch (114) in the second direction.

3. A heat sink according to claim 2, wherein: a first table top (112) is formed between the first notch (111) and the second notch (114), and the first table top (112) is parallel to the first side face of the base (100).

4. A heat sink according to any one of claims 1-3, wherein: the shape of the mounting groove corresponds to the shape of the fan (400).

5. A heat sink according to claim 4, wherein: and the first heat radiating fin (110) positioned on the outermost side of the first area is provided with a mounting rib (117), and the mounting rib (117) is provided with a mounting hole (118).

6. A heat sink according to claim 4, wherein: a third radiating fin (130) is arranged outside at least one of two sides of the first area in the third direction, a third notch (131) is formed in the third radiating fin (130), and the third notch (131) corresponds to the first notch (111) in position and has the same structure;

and the third radiating fins (130) are provided with mounting ribs (117), and mounting holes (118) are formed in the mounting ribs (117).

7. A heat sink according to any one of claims 1-3, wherein: the width of the second notch (114) of the first heat radiating fin (110) positioned in the middle of the plurality of first heat radiating fins (110) in the second direction is larger than the width of the second notches (114) of the first heat radiating fins (110) positioned on both sides in the second direction.

8. A heat sink according to claim 7, wherein: the air duct is of a circular structure.

9. A heat sink according to claim 1, wherein: the second side surface is provided with a resistance groove (140), and the resistance groove (140) is used for embedding a power discharge resistor.

10. A servo driver comprises a heat radiator, an upper shell (200) and a side shell (300), wherein the upper shell (200) and the side shell (300) are oppositely connected with a base (100) of the heat radiator to form a cavity, and a driving plate (500) and a control plate (600) are arranged in the cavity; the method is characterized in that: the heat sink is the heat sink of any one of claims 1-9;

the driving board (500) is attached to the base (100), and the position of the fan (400) on the base (100) corresponds to the position of the heating area of the driving board (500).

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