CN116053052A - A kind of directional conduction heat sink and its preparation method - Google Patents

Abstract

The invention provides a directional diversion radiating fin which is used in a super capacitor module. The heat sink housing has a hollow structure with four sides closed and top and bottom ends open, the hollow structure is formed as a cavity penetrating the top and bottom ends, and the heat sink housing is attached to the supercapacitor cell. The partition walls are disposed at intervals in the chamber to form a plurality of chamber passages, and form a plurality of air flow inlets at the top end and a plurality of air flow outlets at the bottom end. The radiating fin is used in the super capacitor radiating device, solves the problem of overheating of the super capacitor module, realizes the great improvement and stable application of the performance of the vehicle-mounted energy storage system, and improves the reliability, safety and economy. The invention also provides a method for preparing the directional diversion cooling fin.

Description

A kind of directional conduction heat sink and its preparation method

technical field

The invention belongs to the technical field of heat sinks, and in particular relates to a directional conduction heat sink. The invention also relates to a method for preparing the directional conduction fin.

Background technique

Supercapacitors have the advantages of fast charging speed, high charging and discharging efficiency, high cycle life, excellent power performance, large output power, strong overload capacity, and wide operating temperature range, and are increasingly used as on-board energy storage for modern electric vehicles. device.

Since the supercapacitor module is a fully sealed structure, the internal supercapacitor cells generate a lot of heat during the use of high current. The surface of the module, and a fan is used to force ventilation inside the box to improve heat dissipation. The external cooling air flows freely through the metal heat dissipation fins of each capacitor module. Since there is no planned directional air path, the flow of the airflow is very random, so that the modules at different positions in the box and different parts of each module can obtain The air flow is uneven and the heat dissipation is not ideal. The heat dissipation ribs of capacitor modules that are close to the air inlet and can be directly blown by the wind cool faster, while the heat dissipation fins of capacitor modules that are far away from the air inlet and not directly blown by the air path cool down slowly. In addition, the installation space of the supercapacitor sealed box Restriction and use of harsh environment, the heat is not easy to spread to the environment, which will easily cause local overheating in the entire supercapacitor system, resulting in reduced energy storage and shortened life.

Therefore, it is necessary to study a heat sink with more efficient heat dissipation efficiency.

Contents of the invention

Aiming at the deficiencies of the prior art, the object of the present invention is to provide a directional flow guide fin. The invention also provides a method for preparing the directional conduction fin.

In order to achieve the above object, the present invention adopts the following technical solutions:

The present invention provides a directional conduction heat sink, which is used in a supercapacitor module, and the heat sink includes:

A heat sink housing, which has a hollow structure closed around and open at the top and bottom ends, the hollow structure is formed as a cavity passing through the top end and the bottom end, and the heat sink housing is attached to the supercapacitor monomer ;

A plurality of partition walls are arranged at intervals in the cavity to form a plurality of cavity passages, and a plurality of airflow inlets are formed at the top end, and a plurality of airflow outlets are formed at the bottom end.

further,

The heat sink housing is generally a flat hollow cuboid structure surrounded by the first heat sink body, the first side wall, the second heat sink body and the second side wall in sequence. The first heat sink The body is connected to the supercapacitor monomer;

The plurality of partition walls are arranged at intervals between the first heat sink body and the second heat sink body, and both ends of each partition wall are vertically connected to the first heat sink body and the second heat sink body.

further,

The first heat sink body has an upper mounting portion extending upward at its top end and higher than the first side wall, the second heat sink body, and the top ends of the second side wall;

The first heat sink body has a lower mounting portion extending downward at its bottom end and higher than the bottom ends of the first side wall, the second heat sink body, and the second side wall;

The second heat sink body includes a first connection portion formed at a side end of the second heat sink body adjacent to the first side wall, the first connection portion along the The second heat sink body extends in the length direction and is recessed inward along the thickness direction of the second heat sink body, the top end of the first connecting portion is a predetermined distance away from the top end of the second heat sink body, and the first heat sink body is at a predetermined distance from the top end of the second heat sink body. A bottom end of a connecting portion is a predetermined distance away from a bottom end of the second heat sink body;

The second heat sink body further includes a second connection portion formed at a side end of the second heat sink body adjacent to the second side wall, and the second connection portion is formed along the second side wall. The second heat sink body extends in the length direction and is recessed inward along the thickness direction of the second heat sink body, the top end of the second connecting portion is a predetermined distance away from the top end of the second heat sink body, the The bottom end of the second connecting portion is a predetermined distance away from the bottom end of the second heat sink body.

further,

The heat sink has an integrally formed structure;

The plurality of partition walls divide the cavity of the heat sink into 23 cavity channels;

The conduction coefficient of the heat sink is 150-160W/M.

Further, the heat sink is made of aluminum alloy, and its components are composed by weight percentage: 0.32%-0.34% silicon, 0.52%-0.53% magnesium, 0.05%-0.08% copper, and the rest is aluminum.

The present invention also provides a method for preparing the above-mentioned directional conduction heat sink, comprising the following steps:

1) Transport the aluminum alloy rod to the aluminum alloy rod heating furnace, heat it to 480°C-500°C, and keep it warm for 1h-1.5h;

2) Place the mold in the mold heating furnace, heat it to 460°C-480°C, and keep it warm for 2h-4h, then put the mold into the mold base of the extruder;

3) Transporting the aluminum alloy rod after heat preservation in step 1) to the extruder, keeping the temperature of the extruded part at 380°C±5°C to extrude the aluminum alloy rod;

4) The profile obtained by extrusion is cooled to below 420°C through the first cooling step, and then the profile is cooled to below 50°C through the second cooling step;

5) straightening the profile obtained in step 4), and then sawing the profile;

6) Transfer the profile obtained in step 5) to an aging furnace for aging, the aging temperature is 185°C-190°C, and the aging time is 300min-±5min.

further,

In step 3), the extruding part is an extruding ingot barrel, the extrusion temperature of the profile is 510°C-530°C, and the advancing speed of the main cylinder is 1.5mm/s-2mm/s during extrusion;

In step 4), the first cooling step is air cooling and quenching and is carried out in an air cooling rack, and the second cooling step is carried out in a cooling bed.

Further, after step 6), it also includes the step of finishing the profile, including:

7) Carry out milling processing on the profile, and the milling thickness is 0.2mm;

8) Chamfering the profiles;

9) Sand blast the surface of the profile, and exchange the top and bottom of the profile for sand blasting twice, in which the speed of the sand blasting machine is 37HZ-39HZ, and the sandblasting steel shot is 0.15mm-0.25mm;

10) Carry out small oxidation treatment to profile, comprise the following steps successively:

Water washing 1min-3min, degreasing 5min-8min, water washing 3min-5min, alkali etching 1min-3min, alkali etching temperature 35℃±5℃, water washing 1min-3min, neutralization 3min-5min, pure water washing 2min-4min, anodizing 10min-12min, anodizing temperature 20℃±2℃, medium temperature sealing 15min-20min, medium temperature sealing temperature 65℃±5℃, washing 1min-3min, curing drying 10min-12min, curing drying temperature 180℃±10 ℃.

further,

Before step 1), the following steps are also included: hanging the aluminum alloy rods to the aluminum alloy rods to heat the furnace material rack, so that the aluminum alloy rods are laid flat on the material racks, and ensuring that there is no rod stacking phenomenon;

After step 6), the following steps are also included: detecting the Webster hardness of the profile, and ensuring that the Webster hardness of the profile is 10HW-12HW.

Further, the composition of each component of the aluminum alloy rod is as follows: 0.32%-0.34% of silicon, 0.52%-0.53% of magnesium, 0.05%-0.08% of copper, and the rest is aluminum.

Compared with the prior art, the beneficial technical effects of the present invention are: the heat sink of the present invention has an integrally formed structure, does not require welding, and overcomes the shortcomings caused by welding. In addition, the heat sink has multiple cavity channels, the cavity channels play a guiding role for the airflow, limit the directional flow of the airflow, and ensure that the supercapacitor modules at different positions in the box and different parts of each supercapacitor module can Uniform air flow is obtained, and the heat dissipation efficiency is about 30% higher than that of conventional heat sinks. It has excellent heat dissipation effect, solves the problem of overheating of the supercapacitor module, and realizes a substantial improvement in the performance and stable use of the vehicle-mounted energy storage system. Reliability, safety and economy.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For Those of ordinary skill in the art can also obtain other drawings based on these drawings without making creative efforts.

Fig. 1 is the top view structural representation of supercapacitor cooling device of the present invention;

Fig. 2 is a schematic sectional view cut from the A-A section of Fig. 1;

Fig. 3 is a schematic sectional view cut from the B-B section of Fig. 1;

Fig. 4 is the sectional perspective schematic diagram that is cut from the B-B section of Fig. 1;

Fig. 5 is the schematic diagram of the three-dimensional structure of the supercapacitor monomer with heat sink installed in the supercapacitor cooling device of the present invention;

Fig. 6 is the schematic diagram of the three-dimensional structure of the heat sink of the supercapacitor heat dissipation device of the present invention;

FIG. 7 is a flow chart of a method for preparing the heat sink of the supercapacitor heat sink of the present invention.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

The terms "comprising" and "having" in the specification and claims of the present invention and the description of the above drawings and any variations thereof are intended to cover non-exclusive inclusion; The terms "first", "second", "third", "fourth", "fifth", "sixth", etc. are used to distinguish different objects, not to describe a specific order. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art of the present disclosure. In the specification and claims of the present invention and the above description of the drawings, when an element is referred to as being "fixed" or "mounted" or "disposed on" or "connected to" another element, it may be directly or indirectly on the other element. For example, when an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element.

As shown in Figures 1-5, the present invention provides a supercapacitor cooling device, including a box body 2, a first air inlet guide part 8, a second air inlet guide part 8', a plurality of heat collecting parts 4, A plurality of air guide parts 15 , a first air discharge guide part and a second air discharge guide part 20 .

As shown in Figures 2-4, a first air inlet 19 and a second air inlet 19' are respectively provided on a pair of first opposite sides of the box body 2, and a first air inlet 19' is provided on a pair of second opposite sides of the box body 2. The air outlet 14 and the second air outlet 14'. A supercapacitor module is arranged in the box body 2, and the supercapacitor module includes a plurality of supercapacitor cells 1 arranged side by side. The first air inlet guide part 8 is disposed between the inner surface of one of the first opposite sides and the supercapacitor module to form a first air inlet air path L communicating with the first air inlet 19 . The second air inlet guide part 8' is arranged between the inner surface of the other one of the first opposite sides and the supercapacitor module to form a second air inlet air path L' communicated with the second air inlet 19'.

As shown in Figure 5, each heat collecting part 4 is attached to the side of the supercapacitor cell 1, specifically each heat collecting part 4 is attached to the two opposite sides of the super capacitor cell 1 respectively, and the heat collecting The part 4 has a hollow cavity, and the hollow cavity of the heat collecting part 4 communicates with the first air inlet path L and the second air inlet path L' respectively. As shown in Figures 2-4, the air guide part 15 is arranged on the inner surface of the bottom surface 10 of the box, the bottom of the supercapacitor module is placed on the air guide part 15, and a plurality of air guide parts 15 are formed with a collector The hollow cavity of the heat part 4 communicates with a plurality of guide channels 16 . As shown in Figures 1, 3 and 4, the first exhaust guide part (including the first exhaust guide plate 25, the second exhaust guide plate 27 and the third exhaust guide plate 26) is arranged on the second Between the inner surface of one of the opposite sides and the supercapacitor module, a first exhaust air path M communicating with the first air outlet 14 is formed. The second exhaust guide part 20 is disposed between the inner surface of the other of the second opposite sides and the supercapacitor module, so as to form a second exhaust air passage M' communicated with the second air outlet 14', The first exhaust air path M and the second exhaust air path M′ communicate with the guide channel 16 respectively.

As shown in FIGS. 1-4 , the box body 2 includes a first side 21 , a second side 22 , a third side 23 and a fourth side 24 connected in sequence. The first opposite side of the box body 2 is a first side 21 and a third side 23, and the first side 21 and the third side 23 are respectively provided with a first air inlet 19 and a second air inlet 19'. The second opposite side of the box body 2 is a second side 22 and a fourth side 24, and the second side 22 and the fourth side 24 are respectively provided with a first air outlet 14' and a second air outlet 14.

As shown in Figures 1, 3, and 4, the first air exhaust guide includes a first air exhaust guide plate 25, a second air exhaust guide plate 27, and a third exhaust air guide plate 26. The guide plate 25, the second exhaust guide plate 27 and the third exhaust guide plate 26 are arranged between the inner surface of the fourth side 24 of the casing 2 and the supercapacitor module to form the first exhaust wind. Lu M.

Both ends of the first exhaust guide plate 25 are sealed and fixed to the inner surface of the first side 21 and the inner surface of the third side 23 of the box body 2 respectively, and the top of the first exhaust guide plate 25 is connected to the box body The inner surface of the top surface 12, the bottom of the first exhaust guide plate 25 is connected to the inner surface of the bottom surface 10 of the box, and the lower part of the first exhaust guide plate 25 is provided with multiple channels communicating with the guide channel 16. A first guide hole 28.

Above the plurality of first air guide holes 28, the second exhaust guide plate 27 is vertically connected to the first exhaust guide plate 25 at its one end, and the second exhaust guide plate 27 is at its other end. Vertically connected to the third exhaust guide plate 26 , the third exhaust guide plate 26 is detachably connected to the second exhaust guide plate 27 and arranged parallel to the first exhaust guide plate 25 . The two side ends of the second exhaust guide plate 27 and the third exhaust guide plate 26 are respectively connected to the inner surface of the first side 21 and the inner surface of the third side 23 of the box body 2, the third exhaust guide The upper end of the plate 26 is detachably connected to the inner surface of the top surface 12 of the case.

Those skilled in the art should understand that, as shown in FIGS. The air exhaust guide plate 26 essentially constitutes the electrical compartment casing 13 for accommodating electrical components. Wherein, the outer surface of the bottom surface of the electric room casing 13 (that is, the outer surface of the second exhaust guide plate 27) is at a predetermined distance from the inner surface of the bottom surface 10 of the box body, and the outer surface of one side of the electric room casing 13 is There is a predetermined distance between the surface (that is, the outer surface of the third exhaust guide plate 26) and the inner surface of the fourth side 24 of the box body 2, so as to form the first exhaust air path M. Obviously, the first row The wind passage M communicates with the first guide hole 28 . Further, the outer surface of one side of the electric room housing 13 (that is, the outer surface of the first exhaust guide plate 25), the inner surface of the first side 21 of the box body 2, the fourth exhaust guide plate 20 The inner surface of the box 2 and the inner surface of the third side 23 of the box body 2 constitute a capacitor accommodation chamber for accommodating the supercapacitor module. Therefore, the electric room casing 13 is used to accommodate the electrical components, and can form an air flow passage for taking away the heat of the capacitor with the side and bottom surface of the box body 2, thereby eliminating the need to additionally arrange other air flow passages, reducing the The volume of the closed box. Further, the second exhaust guide part 20 is a fourth exhaust guide plate 20, which is arranged between the inner surface of the second side 22 of the box body 2 and the supercapacitor module to form the second exhaust air. Road M'.

As shown in Figure 2, the first air intake guide part 8 is a first air intake guide plate 8, which is arranged between the inner surface of the first side 21 of the box body 2 and the supercapacitor module to form a first air intake guide plate 8. Inlet wind path L. The second air inlet guide part 8' is a second air inlet guide plate 8', which is arranged between the inner surface of the third side 23 of the box body 2 and the supercapacitor module to form a second air inlet air path L'.

As shown in Figures 1 and 2, the two side ends of the first air inlet guide plate 8 are respectively sealed and fixed to the inner surface of the fourth exhaust guide plate 20 and the outer surface of one side of the electric room housing 13 (that is, The outer surface of the first exhaust guide plate 25), the bottom of the first air intake guide plate 8 is sealed and fixed on the inner surface of the bottom surface 10 of the box, the top of the first air intake guide plate 8 is connected to the top of the box body The inner surfaces of the surfaces 12 are separated by a predetermined distance, so as to allow the airflow entering from the first air inlet 19 to flow into the cavity of the heat collecting part 4 through the first air inlet passage L. The two side ends of the second air inlet guide plate 8' are respectively sealed and fixed to the inner surface of the fourth air exhaust guide plate 20 and the outer surface of one side of the electric room housing 13 (that is, the first air exhaust guide plate 25), the bottom of the second air intake guide plate 8' is sealed and fixed on the inner surface of the bottom surface 10 of the box, and the top of the second air intake guide plate 8' is connected to the inner surface of the top surface 12 of the box body A predetermined distance apart, thereby allowing the airflow entering from the second air inlet 19' to flow into the cavity of the heat collecting part 4 through the second air inlet path L', the first air inlet guide plate 8 and the second air inlet guide plate The arrangement of 8' serves as a guide for the airflow, which can prevent the airflow from spreading to other places in the box body 2, thus better maintaining the positive pressure of the gas in the box body 2.

As shown in Figure 2, the top of the first air intake guide plate 8 is provided with a first bent portion 18 facing the inner surface of the first side 21 of the box body 2, and the top of the second air intake guide plate 8' is provided with There is a second bent portion 18 ′ facing the inner surface of the third side 23 of the box body 2 . The first bending part 18 and the second bending part 18' can settle the solid large-particle impurities and raindrops in the airflow, and prevent the impurities from following the airflow into the capacitor accommodating chamber and falling on the capacitor.

As shown in FIGS. 5 and 6 , each heat collecting portion 4 is an integrally formed metal heat sink 4 connected to the supercapacitor cell 1 , and the heat sink 4 includes a heat sink shell and a plurality of partition walls 5 . The heat sink housing has a hollow structure with closed sides and open top and bottom ends. The hollow structure is formed as a cavity passing through the top and bottom ends. The heat sink housing is attached to the super capacitor cell 1 . Partition walls 5 are arranged at intervals in the cavity to form a plurality of cavity passages, and a plurality of organ-shaped airflow inlets 6 are formed at the top, and a plurality of organ-shaped airflow outlets 7 are formed at the bottom, the cavity passages are respectively connected to the first The air inlet path L communicates with the second air inlet path L'.

As shown in FIGS. 5 and 6 , the heat sink housing is generally flat and surrounded by the first heat sink body 41 , the first side wall 43 , the second heat sink body 42 and the second side wall 45 in sequence. A hollow cuboid structure, the first heat sink body 41 is connected to the side of the supercapacitor cell 1 . A plurality of partition walls 5 are arranged at intervals between the first heat sink body 41 and the second heat sink body 42, and the two side ends of each partition wall 5 are vertically connected to the first heat sink body 41 and the second heat sink body respectively. ontology42.

As shown in FIGS. 5 and 6 , the first heat sink body 41 has an upper mounting portion 46 extending upward from the top end of the first side wall 43 , the second heat sink body 42 and the top ends of the second side wall 45 . The first heat sink body 41 has a lower mounting portion 44 extending downward from the bottom end thereof, higher than the bottom ends of the first side wall 43 , the second heat sink body 42 and the second side wall 45 .

As shown in FIGS. 5 and 6 , the second heat sink body 42 includes a first connecting portion 48 formed at the side end of the second heat sink body 42 adjacent to the first side wall 43 , the first connecting portion 48 extends along the length direction of the second heat sink body 42 and is recessed inward along the thickness direction of the second heat sink body 42. The top end of the first connecting portion 48 is a predetermined distance away from the top end of the second heat sink body 42. The bottom end of the portion 48 is a predetermined distance away from the bottom end of the second heat sink body 42 . The second heat sink body 42 also includes a second connecting portion 49, which is formed at the side end of the second heat sink body 42 adjacent to the second side wall 45, and the second connecting portion 49 extends along the second heat sink body. 42 extends in the lengthwise direction and is recessed inwardly along the thickness direction of the second heat sink body 42, the top end of the second connecting portion 49 is a predetermined distance away from the top end of the second heat sink body 42, and the bottom end of the second connecting portion 49 is distanced from the first end of the second heat sink body 42. There is a predetermined distance between the bottom ends of the two heat sink bodies 42 .

Those skilled in the art should understand that the portion where the heat sink 4 is connected to the supercapacitor cell 1 has a matching shape. As shown in FIGS. 5 and 6 , for example, the first heat sink body 41 of the heat sink 4 is connected to the side of the supercapacitor cell 1 through the upper mounting portion 46 and the lower mounting portion 44 using screws, thereby attaching the heat sink 4 To super capacitor cell 1. In order to facilitate heat dissipation, a heat sink 4 is respectively attached to opposite sides of the supercapacitor cell 1 . As shown in FIG. 5 , the corresponding connecting parts of the heat sink 4 attached to two opposite sides of the supercapacitor cell 1 are connected together by a U-shaped groove plate 51 , so as to fix the heat sink 4 more firmly. In a preferred embodiment, the four corners of the second heat sink body 42 are respectively provided with fixing parts 47, so that when the supercapacitor cells 1 with the heat sink 4 installed are arranged side by side, they can be connected to each other through the fixing parts 47. Adjacent fins 4 are connected.

In a preferred embodiment, a plurality of partition walls 5 divide the cavity of the heat sink 4 into 23 cavity channels. The heat sink is made of aluminum alloy, and its components are composed of 0.32%-0.34% silicon, 0.52%-0.53% magnesium, 0.05%-0.08% copper, and the rest is aluminum. The conduction coefficient of the heat sink is 150-160W/M.

As shown in Figures 2-4, the deflector 15 includes support seats 15 arranged at intervals on the inner surface of the bottom surface 10 of the box, the support seats 15 and the first opposite side (ie the first side 21 and the third side 23) In parallel, the supercapacitor module is placed on the support base 15 , and a parallel guide channel 16 communicating with the air outlet 7 is formed between the multiple support bases 15 and the inner surface of the bottom surface 10 of the box. The parallel guide passages 16 can guide the gas passing through the lower part of the air outlet 7 so that it diffuses toward the exhaust air path.

As shown in Figures 3 and 4, both ends of the fourth exhaust guide plate 20 are sealed and fixed to the inner surface of the first side 21 and the inner surface of the third side 23 of the box body 2 respectively, the fourth exhaust guide The top of the plate 20 is sealed and fixed on the inner surface of the top surface 12 of the box body, the bottom of the fourth exhaust guide plate 20 is connected to the inner surface of the bottom surface 10 of the box body, and the bottom of the fourth exhaust guide plate 20 is set There are a plurality of second guide holes 28' communicating with the guide channel 16 to form a second exhaust air path M'.

As shown in Figure 2, the first air inlet 19 and the second air inlet 19' are respectively provided with a first fan 3 and a second fan 3'. On the inner surface of the bottom surface 10 of the box, between the first air inlet 19 and the first air inlet guide plate 8 , between the second air inlet 19 ′ and the second air inlet guide plate 8 ′, respectively set a second A drainage hole 9 and a second drainage hole 9'. The position of the first air outlet 14 and the second air outlet 14' on the side of the box body 2 is higher than that of the first air inlet 19 and the second air inlet 19' on the side of the box body 2, thereby avoiding air intake and exhaust form a self-circulation.

When the supercapacitor cooling device of the present invention works, the first fan 3 and the second fan 3 ' at the first air inlet 19 and the second air inlet 19' of the cabinet 2 send the air outside the cabinet 2 into the cabinet 2 Inside. At the first air inlet guide plate 8 and the second air inlet guide plate 8', solid large particle impurities in the airflow are respectively blocked by the first bent portion 18 and the second bent portion 18’ to settle. Then, under the guidance of the first air intake guide plate 8 and the second air intake guide plate 8 ′, the airflow rises to the upper part in the box body 2 to form a positive pressure, so that the airflow is drawn from the airflow inlet of the cooling fin 4 6 enters the cavity of the heat sink 4, and the air flow passes through the cavity channel formed by the partition wall 5 to the air outlet 7, thereby taking away the heat conducted by the heat sink 4 from the supercapacitor module. The airflow flows out from the airflow outlet 7 of the cooling fin 4, passes through the air guide channel 16, and flows through under the guidance of the first air exhaust guide plate 25, the second exhaust air guide plate 27, and the third air exhaust guide plate 26. The first exhaust air path M, and flows through the second exhaust air path M' under the guidance of the fourth exhaust guide plate 20, and finally flows through the first air exhaust port 14 and the second exhaust air path of the box body 2 respectively. Port 14' discharges. The present invention improves the air duct inside the cooling device, so that the airflow can pass through the cavity of each heat sink attached to the supercapacitor monomer after entering the box through the air inlet, and the airflow passes through the entire capacitor accommodation chamber, thereby increasing the The heat dissipation area of the capacitor is reduced, and the heat dissipation efficiency is improved.

In addition, as shown in Figure 7, the present invention also provides a method for preparing the above-mentioned heat sink 4, comprising the following steps:

1) Transport the aluminum alloy rods (for example, 10 aluminum alloy rods) to the aluminum alloy rod heating furnace, heat them for 3 hours to 480°C-500°C, and keep them warm for 1h-1.5h.

In a preferred embodiment, the following steps are also included before step 1): hoisting the aluminum alloy rods to the aluminum alloy rods to heat the charge rack, so that the aluminum alloy rods are laid flat on the charge rack, and ensuring that there is no stacking of rods.

2) While the aluminum alloy rod is being heated, place the mold in the mold heating furnace, heat it to 460°C-480°C, and keep it warm for 2h-4h, then put the mold into the die base of the extruder.

3) According to the production requirements, the aluminum alloy rod after heat preservation in step 1) is cut, and then transported to the extruder, and the temperature of the extruded part is kept at 380°C ± 5°C to extrude the aluminum alloy rod.

In a preferred embodiment, the extruding part is an extrusion ingot barrel, and the temperature of the extrusion ingot barrel is kept at 380°C±5°C to ensure the temperature of the extrusion process of the aluminum alloy rod. In addition, the extrusion temperature of the profile is 510°C-530°C, and the extrusion temperature of the profile refers to the temperature at which the aluminum alloy rod comes out of the mold mouth after being shaped by the mold. In a preferred embodiment, the forward speed of the master cylinder is 1.5 mm/s-2 mm/s during extrusion.

4) The profile obtained by extrusion is cooled to below 420° C. through the first cooling step, and then the profile is cooled to below 50° C. through the second cooling step.

In a preferred embodiment, the first cooling step is air cooling quenching and is carried out in a 20M/s-50M/s air cooling frame, and the second cooling step is carried out in a cooling bed. Furthermore, after the first cooling step, the profile is pulled by a tractor and sawn if necessary.

5) Straighten the profile obtained in step 4), and then set the traction length as required and saw the profile.

6) Transfer the profile obtained in step 5) to an aging furnace for aging, the aging temperature is 185°C-190°C, and the aging time is 300min±5min.

After step 6), the following steps are also included: detecting the Webster hardness of the profile, and ensuring that the Webster hardness of the profile is 10HW-12HW.

In addition, after step 6), it also includes the step of finishing the profile, including:

7) Carry out milling processing on the profile, and the thickness of the milling process is 0.2mm, so as to ensure that the height dimension of the profile meets the requirements.

8) Chamfer the profiles (R0.5-R1).

9) Sand blast the surface of the profile. In order to ensure the same color on both sides of the profile after sand blasting, exchange the top and bottom of the profile for sand blasting twice. The speed of the sand blasting machine is 37HZ-39HZ, and the sandblasting steel shot is 0.15mm-0.25mm .

10) Because the size of the radiator semi-finished product of the present invention is only 290mm * 500mm, the profile is therefore subjected to small oxidation treatment, which includes the following steps in turn:

Washing with water for 1min-3min, degreasing with degreasing agent for 5min-8min, washing with water for 3min-5min, using caustic soda for 1min-3min, alkali etching temperature 35℃±5℃, washing with water for 1min-3min, using 180±10g/L Free acid neutralization for 3min-5min, pure water washing for 2min-4min, anodizing for 10min-12min, anodizing temperature 20°C±2°C (the profile is placed in the electrolyte solution as the anode, and the aluminum oxide film is formed on the surface of the profile by electrolysis ), medium temperature sealing for 15min-20min, medium temperature sealing temperature 65°C±5°C (medium temperature sealing is used to make up for the defects of high porosity and high adsorption on the anodized film on the surface), washing with water for 1min-3min, curing and drying for 10min -12min, curing and drying temperature 180℃±10℃.

Further, install the threaded sheath, because the precise size of all the round holes is high, and some round holes are also tapped screw holes, each directional radiator must be equipped with a threaded sheath before it can be packaged.

In a preferred embodiment, the composition of each component of the aluminum alloy rod is: 0.32%-0.34% silicon, 0.52%-0.53% magnesium, 0.05%-0.08% copper, and the rest is aluminum.

Example 1

The invention provides a method for preparing the above-mentioned heat sink, comprising the following steps:

1) Transport the aluminum alloy rod to the aluminum alloy rod heating furnace, heat it to 480°C, and keep it warm for 1.5h.

2) Place the mold in the mold heating furnace, heat it to 460°C, and keep it warm for 4 hours, then put the mold into the die base of the extruder.

3) Transporting the aluminum alloy rod after heat preservation in step 1) to an extruder, and keeping the temperature of the extruded part at 375° C. to extrude the aluminum alloy rod.

The extruding part is the extruding ingot barrel, and the temperature of the extruding ingot barrel is kept at 375°C to ensure the temperature of the extrusion process of the aluminum alloy rod. In addition, the extrusion temperature of the profile is 510°C. The forward speed of the master cylinder is 2mm/s when extruding.

4) The profile obtained by extrusion is cooled to below 420° C. through the first cooling step, and then the profile is cooled to below 50° C. through the second cooling step.

The first cooling step is air-cooled quenching and carried out in a 20M/s air-cooled frame, and the second cooling step is carried out in a cooling bed. Furthermore, after the first cooling step, the profile is pulled by a tractor and sawn if necessary.

5) Straighten the profile obtained in step 4), and then set the traction length as required and saw the profile.

6) Transfer the profile obtained in step 5) to an aging furnace for aging, the aging temperature is 185° C., and the aging time is 305 min.

After step 6), the following steps are also included: detecting the Webster hardness of the profile, and ensuring that the Webster hardness of the profile is 10HW.

7) Carry out milling processing on the profile, and the thickness of the milling process is 0.2mm, so as to ensure that the height dimension of the profile meets the requirements.

8) Chamfer the profiles (R0.5-R1).

9) Sand blast the surface of the profile. In order to ensure the same color on both sides of the profile after sand blasting, exchange the top and bottom of the profile for sand blasting twice. The speed of the sand blasting machine is 37HZ, and the blasting steel shot is 0.15mm.

10) Carry out small oxidation treatment to profile, comprise the following steps successively:

Washing with water for 1min, degreasing with degreasing agent for 5min, washing with water for 3min, alkaline etching with caustic soda for 1min, alkaline etching temperature 30°C, washing with water for 1min, neutralizing with 170g/L free acid for 3min, washing with pure water for 2min, anodizing for 10min, anodizing Oxidation temperature is 18°C, sealing at medium temperature for 15 minutes, sealing at medium temperature at 60°C, washing with water for 1 minute, curing and drying for 10 minutes, curing and drying temperature at 170°C.

The components of the aluminum alloy rod are composed by weight percentage: 0.32% of silicon, 0.52% of magnesium, 0.05% of copper, and the rest is aluminum.

Example 2

The invention provides a method for preparing the above-mentioned heat sink, comprising the following steps:

1) Transport the aluminum alloy rod to the aluminum alloy rod heating furnace, heat it to 490°C, and keep it warm for 1.3h.

2) Place the mold in the mold heating furnace, heat it to 470°C, and keep it warm for 3 hours, then put the mold into the die base of the extruder.

3) Transport the aluminum alloy rod after heat preservation in step 1) to the extruder, and keep the temperature of the extruded part at 380° C. to extrude the aluminum alloy rod.

The extruding part is the extruding ingot barrel, and the temperature of the extruding ingot barrel is kept at 380°C to ensure the temperature of the extrusion process of the aluminum alloy rod. In addition, the extrusion temperature of the profile is 520°C. The forward speed of the master cylinder is 1.7mm/s when extruding.

4) The profile obtained by extrusion is cooled to below 420° C. through the first cooling step, and then the profile is cooled to below 50° C. through the second cooling step.

The first cooling step is air-cooled quenching and carried out in a 30M/s air-cooled frame, and the second cooling step is carried out in a cooling bed. Furthermore, after the first cooling step, the profile is pulled by a tractor and sawn if necessary.

5) Straighten the profile obtained in step 4), and then set the traction length as required and saw the profile.

6) Transfer the profile obtained in step 5) to an aging furnace for aging, the aging temperature is 188° C., and the aging time is 300 min.

After step 6), the following steps are also included: detecting the Webster hardness of the profile, and ensuring that the Webster hardness of the profile is 11HW.

7) Carry out milling processing on the profile, and the thickness of the milling process is 0.2mm, so as to ensure that the height dimension of the profile meets the requirements.

8) Chamfer the profiles (R0.5-R1).

9) Sand blast the surface of the profile. In order to ensure the same color on both sides of the profile after sand blasting, exchange the top and bottom of the profile for sand blasting twice. The speed of the sand blasting machine is 38HZ, and the sandblasting steel shot is 0.20mm.

10) Carry out small oxidation treatment to profile, comprise the following steps successively:

Washing with water for 2 minutes, degreasing with degreasing agent for 7 minutes, washing with water for 4 minutes, alkaline etching with caustic soda for 2 minutes, alkaline etching temperature 35°C, washing with water for 2 minutes, neutralizing with 180g/L free acid for 4 minutes, washing with pure water for 3 minutes, anodizing for 11 minutes, anodizing Oxidation temperature is 20°C, sealing at medium temperature for 18 minutes, sealing at medium temperature at 65°C, washing with water for 2 minutes, curing and drying for 11 minutes, curing and drying temperature at 180°C.

The composition of each component of the aluminum alloy rod is as follows: 0.33% of silicon, 0.525% of magnesium, 0.06% of copper, and the rest is aluminum.

Example 3

The invention provides a method for preparing the above-mentioned heat sink, comprising the following steps:

1) Transport the aluminum alloy rod to the aluminum alloy rod heating furnace, heat it to 500°C, and keep it warm for 1h.

2) Place the mold in the mold heating furnace, heat it to 480°C, and keep it warm for 2 hours, then put the mold into the die base of the extruder.

3) Transport the aluminum alloy rod after heat preservation in step 1) to the extruder, and keep the temperature of the extrusion part at 385° C. to extrude the aluminum alloy rod.

The extruding part is the extruding ingot barrel, and the temperature of the extruding ingot barrel is kept at 385°C to ensure the temperature of the extrusion process of the aluminum alloy rod. In addition, the extrusion temperature of the profile is 530°C. The forward speed of the master cylinder is 1.5mm/s during extrusion.

4) The profile obtained by extrusion is cooled to below 420° C. through the first cooling step, and then the profile is cooled to below 50° C. through the second cooling step.

The first cooling step is air-cooled quenching and carried out in a 50M/s air-cooled frame, and the second cooling step is carried out in a cooling bed. Furthermore, after the first cooling step, the profile is pulled by a tractor and sawn if necessary.

5) Straighten the profile obtained in step 4), and then set the traction length as required and saw the profile.

6) Transfer the profile obtained in step 5) to an aging furnace for aging, the aging temperature is 190° C., and the aging time is 295 minutes.

After step 6), the following steps are also included: detecting the Webster hardness of the profile, and ensuring that the Webster hardness of the profile is 12HW.

7) Carry out milling processing on the profile, and the thickness of the milling process is 0.2mm, so as to ensure that the height dimension of the profile meets the requirements.

8) Chamfer the profiles (R0.5-R1).

9) Sand blast the surface of the profile. In order to ensure the same color on both sides of the profile after sand blasting, exchange the top and bottom of the profile for sand blasting twice. The speed of the sand blasting machine is 39HZ, and the sandblasting steel shot is 0.25mm.

10) Carry out small oxidation treatment to profile, comprise the following steps successively:

Washing with water for 3 minutes, degreasing with degreasing agent for 8 minutes, washing with water for 5 minutes, alkaline etching with caustic soda for 3 minutes, alkaline etching temperature at 40°C, washing with water for 3 minutes, neutralizing with 190g/L free acid for 5 minutes, washing with pure water for 4 minutes, anodizing for 12 minutes, anodizing Oxidation temperature is 22°C, sealing at medium temperature for 20 minutes, sealing at medium temperature at 70°C, washing with water for 3 minutes, curing and drying for 12 minutes, curing and drying temperature at 190°C.

The composition of each component of the aluminum alloy rod is as follows: 0.34% of silicon, 0.53% of magnesium, 0.08% of copper, and the rest is aluminum.

The above are exemplary embodiments disclosed in the present invention, and the sequence disclosed in the above embodiments of the present invention is only for description, and does not represent the advantages or disadvantages of the embodiments. However, it should be noted that the discussion of any of the above embodiments is exemplary only, and is not intended to imply that the disclosed scope (including the claims) of the embodiments of the present invention is limited to these examples. Without departing from the scope defined by the claims, you can Various changes and modifications are made. The functions, steps and/or actions of the method claims in accordance with the disclosed embodiments described herein need not be performed in any particular order. In addition, although the elements disclosed in the embodiments of the present invention may be described or required in an individual form, they may also be understood as a plurality unless explicitly limited to a singular number.

Those of ordinary skill in the art should understand that: the discussion of any of the above embodiments is exemplary only, and is not intended to imply that the scope (including claims) disclosed by the embodiments of the present invention is limited to these examples; under the idea of the embodiments of the present invention , technical features in the above embodiments or in different embodiments can also be combined, and there are many other changes in different aspects of the embodiments of the present invention as described above, which are not provided in details for the sake of brevity. Therefore, any omission, modification, equivalent replacement, improvement, etc. made within the spirit and principles of the embodiments of the present invention shall be included within the protection scope of the embodiments of the present invention.

Claims (10)

1. A directional conduction heat sink, which is used in a supercapacitor module, is characterized in that the heat sink comprises: A heat sink housing, which has a hollow structure closed around and open at the top and bottom ends, the hollow structure is formed as a cavity passing through the top end and the bottom end, and the heat sink housing is attached to the supercapacitor monomer ; A plurality of partition walls are arranged at intervals in the cavity to form a plurality of cavity passages, and a plurality of airflow inlets are formed at the top end, and a plurality of airflow outlets are formed at the bottom end. 2. The directional flow guide fin according to claim 1, characterized in that, The heat sink housing is generally a flat hollow cuboid structure surrounded by the first heat sink body, the first side wall, the second heat sink body and the second side wall in sequence. The first heat sink The body is connected to the supercapacitor monomer; The plurality of partition walls are arranged at intervals between the first heat sink body and the second heat sink body, and both ends of each partition wall are vertically connected to the first heat sink body and the second heat sink body. 3. The directional flow guide fin according to claim 2, characterized in that, The first heat sink body has an upper mounting portion extending upward at its top end and higher than the first side wall, the second heat sink body, and the top ends of the second side wall; The first heat sink body has a lower mounting portion extending downward at its bottom end and higher than the bottom ends of the first side wall, the second heat sink body, and the second side wall; The second heat sink body includes a first connection portion formed at a side end of the second heat sink body adjacent to the first side wall, the first connection portion along the The second heat sink body extends in the length direction and is recessed inward along the thickness direction of the second heat sink body, the top end of the first connecting portion is a predetermined distance away from the top end of the second heat sink body, and the first heat sink body is at a predetermined distance from the top end of the second heat sink body. A bottom end of a connecting portion is a predetermined distance away from a bottom end of the second heat sink body; The second heat sink body further includes a second connection portion formed at a side end of the second heat sink body adjacent to the second side wall, and the second connection portion is formed along the second side wall. The second heat sink body extends in the length direction and is recessed inwardly along the thickness direction of the second heat sink body, the top end of the second connecting portion is a predetermined distance away from the top end of the second heat sink body, the The bottom end of the second connecting portion is a predetermined distance away from the bottom end of the second heat sink body. 4. The directional flow guide fin according to claim 1, characterized in that, The heat sink has an integrally formed structure; The plurality of partition walls divide the cavity of the heat sink into 23 cavity channels; The conduction coefficient of the heat sink is 150-160W/M. 5. The directional guide heat sink according to claim 1, characterized in that, the material of the heat sink is aluminum alloy, and the composition of its components is as follows by weight percentage: silicon 0.32%-0.34%, magnesium 0.52% -0.53%, copper 0.05%-0.08%, and the rest is aluminum. 6. A method for preparing the directional conduction heat sink according to any one of claims 1-5, characterized in that, comprising the following steps: 1) Transport the aluminum alloy rod to the aluminum alloy rod heating furnace, heat it to 480°C-500°C, and keep it warm for 1h-1.5h; 2) Place the mold in the mold heating furnace, heat it to 460°C-480°C, and keep it warm for 2h-4h, then put the mold into the mold base of the extruder; 3) Transporting the aluminum alloy rod after heat preservation in step 1) to the extruder, keeping the temperature of the extruded part at 380°C±5°C to extrude the aluminum alloy rod; 4) The profile obtained by extrusion is cooled to below 420°C through the first cooling step, and then the profile is cooled to below 50°C through the second cooling step; 5) straightening the profile obtained in step 4), and then sawing the profile; 6) Transfer the profile obtained in step 5) to an aging furnace for aging, the aging temperature is 185°C-190°C, and the aging time is 300min-±5min. 7. The method of claim 6, wherein, In step 3), the extruding part is an extruding ingot barrel, the extrusion temperature of the profile is 510°C-530°C, and the advancing speed of the main cylinder is 1.5mm/s-2mm/s during extrusion; In step 4), the first cooling step is air cooling and quenching and is carried out in an air cooling rack, and the second cooling step is carried out in a cooling bed. 8. The method according to claim 7, characterized in that, after step 6), the step of finishing the profile is also included, including: 7) Carry out milling processing on the profile, and the milling thickness is 0.2mm; 8) Chamfering the profiles; 9) Sand blast the surface of the profile, and exchange the top and bottom of the profile for sand blasting twice, in which the speed of the sand blasting machine is 37HZ-39HZ, and the sandblasting steel shot is 0.15mm-0.25mm; 10) Carry out small oxidation treatment to profile, comprise the following steps successively: Water washing 1min-3min, degreasing 5min-8min, water washing 3min-5min, alkali etching 1min-3min, alkali etching temperature 35℃±5℃, water washing 1min-3min, neutralization 3min-5min, pure water washing 2min-4min, anodizing 10min-12min, anodizing temperature 20℃±2℃, medium temperature sealing 15min-20min, medium temperature sealing temperature 65℃±5℃, washing 1min-3min, curing drying 10min-12min, curing drying temperature 180℃±10 ℃. 9. The method of claim 6, wherein, Before step 1), the following steps are also included: hanging the aluminum alloy rods to the aluminum alloy rods to heat the furnace material rack, so that the aluminum alloy rods are laid flat on the material racks, and ensuring that there is no rod stacking phenomenon; After step 6), the following steps are also included: detecting the Webster hardness of the profile, and ensuring that the Webster hardness of the profile is 10HW-12HW. 10. The method according to claim 6, characterized in that, the composition of each component of the aluminum alloy rod is: 0.32%-0.34% of silicon, 0.52%-0.53% of magnesium, 0.05%-0.08% of copper, and the remaining for aluminum.

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