heat sink

Abstract

This utility model provides a heat sink, comprising: multiple rows of horizontally arranged heat dissipation fins and a heat dissipation base plate connecting each row of heat dissipation fins. Each row of heat dissipation fins includes multiple first fins and multiple second fins integrally arched from the heat dissipation base plate and arranged alternately in the longitudinal direction. The first fins and second fins are staggered in the horizontal direction. The multiple first fins and multiple second fins combine to form crisscrossing airflow channels, thereby reducing the wind resistance inside the heat dissipation fins and enabling any heat dissipation fin to fully exchange heat with the air.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation technology, and in particular to heat sinks. Background Technology

[0002] Currently, most radiators on the market use copper bases formed by copper plates or copper pillars to conduct heat away through direct contact. This heat is then transferred to aluminum or copper fins for dissipation. The main way to improve the heat dissipation effect of radiators is to make the fins into shapes that facilitate heat dissipation, such as increasing the contact area between the fins and the air, thereby increasing the heat exchange area.

[0003] Heat sink fins are commonly found in various forms, including inline fins, columnar fins, and radial fins. Inline fins are simple to manufacture, but their heat dissipation area and space are limited. Thin and tall fins have weak heat transfer to the top, while thick and short fins have a small heat dissipation surface area. Narrow spacing between fins can also affect the convection of hot and cold air, thus reducing the heat dissipation efficiency in the middle of the fins. Columnar fins have a large surface area and high thermal conductivity, but they are complex to manufacture. The dense arrangement of columnar fins can lead to high air resistance, requiring an additional fan. Radial fins are manufactured by inserting copper or aluminum fins into a copper column base under high pressure, which is difficult to manufacture and makes it challenging to control the consistency of production output.

[0004] The processing and forming schemes of heat sinks are generally divided into: processing copper or aluminum blocks by milling or forging, and forming the fins and base as one piece. Pure copper is expensive and difficult to process, while pure aluminum has a lower thermal conductivity coefficient than pure copper, is cheaper but has poor thermal conductivity. Copper-aluminum combination processes such as embedding copper or attaching copper sheets on the basis of aluminum heat sinks do not significantly improve the heat dissipation performance of the heat sink. In addition, the material recycling cost of milling is large and the processing time is long, while forging will have necking phenomenon during cooling plastic rheology, and the fins are prone to uneven thickness and height, which affects heat dissipation.

[0005] The difficulty in processing copper or aluminum into fins and combining them with a base lies in the fact that mass production of fins can lead to processing errors. This is especially true for fins with specially designed shapes, arrangements, and spacing, which require higher processing precision. The positioning cost of each fin on the base is also higher. In addition, multiple fins are connected only through the base, and the combination of fins and base can easily generate large interfacial thermal resistance. When the combination of fins and base is not tight enough, the heat from the base is difficult to transfer to the fins with high interfacial thermal resistance, and direct heat conduction between fins is also impossible, which greatly affects the heat dissipation efficiency.

[0006] Thin copper or aluminum sheets are processed into spiral or continuous arc-shaped fins with high surface area. The upper and lower base plates are fixed to the fins using a piercing die. The base plates are then welded to the base as a whole. The thin sheets are prone to elastic rebound during bending, requiring gradual stress release to prevent the fin shape from deviating from the expected design. The piercing die is prone to misalignment when piercing the upper and lower base plates. The welding between the upper and lower base plates and the fins, as well as the welding between the base plates and the base, are prone to generating interfacial thermal resistance. The processing flow is long and the production cost is high. Utility Model Content

[0007] One advantage of this invention is that it provides a radiator in which the shape of the heat dissipation fins is designed to facilitate heat convection and heat radiation with the air. The radiator is small in size, light in weight, and has high heat dissipation capacity.

[0008] Another advantage of this invention is that it provides a heat sink in which the heat dissipation fins are integrally formed with the heat dissipation base plate. The continuous structure between the multiple heat dissipation fins and the heat dissipation base plate is conducive to the continuity of heat conduction, so that the heat dissipation fins with higher heat can conduct heat to the heat dissipation fins with lower heat, thereby dispersing heat from the local heat dissipation fins to the whole heat sink and slowing down the rate at which the temperature of the heat sink rises.

[0009] Another advantage of this invention is that it provides a heat sink in which the heat dissipation fins have a strong ability to transfer heat from the heat dissipation side plate to the heat dissipation top plate, so that the heat dissipation side plate can continuously absorb heat from the heat dissipation base plate.

[0010] Another advantage of this utility model is that it provides a heat sink in which the shape design of the heat sink fin group is easy to stamp and form, and is not prone to elastic rebound, thereby simplifying the processing flow of the heat sink fin group, improving the production and processing qualification rate of the heat sink, reducing processing costs, and facilitating mass production.

[0011] Another advantage of this utility model is that it provides a heat sink in which two adjacent heat sink side plates of any heat sink fin group form a staggered structure. When multiple heat sink side plates of any heat sink fin group exchange heat with the air, multiple air layers that absorb the heat of the heat sink side plates are staggered, thereby making full use of the air near the heat sink side plates for heat exchange and increasing the heat dissipation speed of the heat sink.

[0012] Another advantage of this utility model is that it provides a radiator in which the structure of any of the heat dissipation fins forms a continuous plurality of airflow channels, so as to reduce the wind resistance inside the heat dissipation fins, avoid generating too much airflow swirl during heat dissipation to affect the heat dissipation effect, and promote the heat exchange between the radiator and the air to form natural convection during heat dissipation.

[0013] Another advantage of this invention is that it provides a radiator in which any of the airflow channels is provided with multiple openings so that the air with higher heat in the airflow channel can diffuse outward through the openings and conduct hot and cold convection with the outside air.

[0014] Another advantage of this invention is that it provides a heat sink in which the first and last ends of any of the heat sink side plates are connected to each other, so that the heat in the heat sink side plate with higher heat has multiple heat conduction paths, and the heat is conducted from the heat sink side plate with higher heat to the heat sink side plate with lower heat, so that the heat can be rapidly diffused from the local area near the heat source to the whole.

[0015] Another advantage of this utility model is that it provides a heat sink in which the shape of the heat sink top plate that connects the multiple heat sink side plates is convenient for absorbing heat and redistributing the heat. The heat sink top plate with higher heat can determine the heat conduction path and conduct the absorbed heat to the heat sink side plate with lower heat, and then conduct the heat to the heat sink fin group with lower heat.

[0016] Other advantages and features of this invention will become apparent in the following description, and these advantages and features can be achieved by means and combinations particularly pointed out in the appended claims.

[0017] To achieve the above and other objectives and advantages, the present invention provides a radiator, wherein the radiator includes: multiple rows of horizontally arranged heat dissipation fins and a heat dissipation base plate connecting each row of heat dissipation fins, each row of heat dissipation fins includes multiple first fins and multiple second fins integrally arched from the heat dissipation base plate and staggered in the longitudinal direction, the first fins and the second fins being staggered in the horizontal direction.

[0018] In one embodiment, any first fin includes a first top plate and a first side plate extending from two opposite ends of the first top plate to the heat dissipation base plate, and any second fin includes a second top plate and a second side plate extending from two opposite ends of the second top plate to the heat dissipation base plate.

[0019] In one embodiment, a plurality of first side plates and a plurality of second side plates serve as heat dissipation side plates of the heat dissipation fin assembly, and crisscrossing airflow channels are formed between the plurality of heat dissipation side plates, with an opening connecting the plurality of airflow channels formed between two adjacent heat dissipation side plates.

[0020] In one embodiment, the tops of the plurality of heat dissipation side plates are connected to form an integrally formed heat dissipation top plate, the heat dissipation top plate including a top plate and a plurality of extensions extending outward in opposite directions from both sides of the top plate and arranged in an alternating manner.

[0021] In one embodiment, the end of any of the extensions forms the outer end of the heat dissipation top plate, and the ends of adjacent extensions in the top plate form the inner end of the heat dissipation top plate. The heat dissipation side plate includes an outer side plate and an inner side plate. A plurality of outer side plates extend from the heat dissipation bottom plate to the outer end, and a plurality of inner side plates extend from the heat dissipation bottom plate to the inner end.

[0022] In one embodiment, the outer side plate and the inner side plate of any first fin and any second fin are arranged opposite to each other, and the outer side plate of the first fin and the inner side plate of the adjacent second fin are staggered in the longitudinal direction and spaced apart from each other by the airflow channels in the transverse direction.

[0023] In one embodiment, the inner plate of the first fin and the outer plate of the adjacent second fin are staggered in the longitudinal direction and spaced apart from each other in the transverse direction by the airflow channels.

[0024] In one embodiment, the inner plates of the first fin and the inner plates of the adjacent second fin are staggered in the longitudinal direction and spaced apart from each other in the transverse direction by the airflow channels.

[0025] In one embodiment, a top opening is formed between two adjacent extensions of the heat dissipation top plate, and the top opening communicates with the airflow channel.

[0026] In one embodiment, the heat sink further includes a heat-conducting plate, and the multiple rows of heat dissipation fins are fixed to the heat-conducting plate via the heat dissipation base plate. The base plate of the heat-conducting plate absorbs heat through a functional module, and then conducts the heat to the heat dissipation fins through the contact between the heat-conducting plate and the heat dissipation base plate.

[0027] In one embodiment, the heat dissipation top plate of the radiator includes a top plate and a plurality of extensions extending outward in opposite directions from both sides of the top plate and arranged alternately. The top plate and the extensions are respectively provided with grooves extending through in the longitudinal direction.

[0028] In one embodiment, the end of any of the extensions forms the outer end of the heat dissipation top plate, and the end of the top plate adjacent to the extension forms the inner end of the heat dissipation top plate. The heat dissipation side plate includes an outer side plate and an inner side plate. A plurality of outer side plates extend inwardly from the heat dissipation base plate to the outer end, and a plurality of inner side plates extend inwardly from the heat dissipation base plate to the inner end.

[0029] In one embodiment, the heat sink has undergone surface treatment.

[0030] This utility model also provides a method for manufacturing a radiator, which includes the following steps:

[0031] (A) Cutting and stamping sheet metal to form a blank;

[0032] (B) Determine the stamping position of the blank, and determine the stamping distance between two adjacent stamping positions of the blank according to the preset height of the heat dissipation fin assembly.

[0033] (C) Move the blank to the stamping position to the die;

[0034] (D) Stamp the blank at the stamping position to form the shape of the heat dissipation top plate, continue to stamp and move the heat dissipation top plate, and the blank part connected to the heat dissipation top plate forms the outer side plate and the inner side plate respectively, until the heat dissipation fin group is stamped and formed, wherein the heat dissipation top plate includes a top plate and a plurality of extensions that extend outward in opposite directions from both sides of the top plate and are arranged in an alternating manner.

[0035] (E) Move the blank according to the stamping pitch so that the next stamping position is aligned with the die;

[0036] (F) Repeat steps (D) to (F) until the blank is stamped to form multiple rows of horizontally arranged heat dissipation fins and a heat dissipation base plate connecting each row of heat dissipation fins.

[0037] In one embodiment, the method for manufacturing the heat sink further includes the following steps:

[0038] (G) Cut the heat-conducting plate according to the dimensions of the heat dissipation base plate to form a heat-conducting plate;

[0039] (H) Fix the heat-conducting plate and the heat dissipation base plate to form the heat sink.

[0040] The further objectives and advantages of this invention will become fully apparent from the following description and accompanying drawings.

[0041] These and other objectives, features and advantages of this invention will become fully apparent from the following detailed description, accompanying drawings and appended claims. Attached Figure Description

[0042] Figure 1 This is a perspective structural diagram of the radiator according to the first preferred embodiment of the present invention.

[0043] Figure 2 This is a three-dimensional structural diagram of the heat dissipation fin assembly of the radiator according to the above-described preferred embodiment of the present invention.

[0044] Figure 3 This is a side view of the heat dissipation fin assembly of the heat sink according to the above-described preferred embodiment of the present invention.

[0045] Figure 4This is a schematic diagram illustrating the airflow path of the heat sink according to the above-described preferred embodiment of the present invention during heat dissipation by the heat sink fin assembly.

[0046] Figure 5 This is a perspective structural diagram showing multiple rows of heat dissipation fins of the heat sink according to the above-described preferred embodiment of the present invention.

[0047] Figure 6 This is a side view of the heat dissipation fin assembly of the radiator according to the second preferred embodiment of the present invention.

[0048] Figure 7 This is a schematic diagram of the processing flow of the radiator according to the first preferred embodiment of the present invention.

[0049] Figure 8 This is a schematic diagram illustrating the stamping process of the heat sink assembly according to the first preferred embodiment of the present invention. Detailed Implementation

[0050] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0051] Those skilled in the art should understand that in the disclosure of this utility model, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as a limitation of this utility model.

[0052] like Figures 1 to 3 As shown, a radiator 100 according to a preferred embodiment of the present invention is illustrated. The radiator 100 includes multiple rows of horizontally arranged heat dissipation fins 10 and a heat dissipation base plate 20 connecting each row of heat dissipation fins 10. Each row of heat dissipation fins 10 includes multiple first fins 11 and multiple second fins 12 that are integrally arched from the heat dissipation base plate 20 and arranged alternately in the longitudinal direction. The first fins 11 and the second fins 12 are staggered in the lateral direction.

[0053] Wherein, any of the first fins 11 includes a first top plate 111 and a first side plate 112 extending from the opposite ends of the first top plate 111 to the heat dissipation base plate 20, and any of the second fins 12 includes a second top plate 121 and a second side plate 122 extending from the opposite ends of the second top plate 121 to the heat dissipation base plate 20.

[0054] Multiple first side plates 112 and multiple second side plates 122 serve as heat dissipation side plates 13 of the heat dissipation fin assembly 10. The multiple heat dissipation side plates 13 form crisscrossing airflow channels 101. An opening 102 connecting the multiple airflow channels 101 is formed between two adjacent heat dissipation side plates 13, thereby reducing the wind resistance inside the heat dissipation fin assembly 10. This allows air with higher heat content that has exchanged heat with the heat dissipation fin assembly 10 in the airflow channels 101 to leave through the nearest opening 102, while air with lower heat content in the outside can flow into the airflow channels 101 through the nearest opening 102 to absorb the heat from the heat dissipation fin assembly 10.

[0055] Specifically, the tops of the multiple heat dissipation side plates 13 are connected to form an integrally formed heat dissipation top plate 14. The heat dissipation top plate 14 includes a top plate 141 and multiple extensions 142 that extend outward in opposite directions from both sides of the top plate 141 and are arranged in an alternating manner.

[0056] The end of any of the extensions 142 forms the outer end 143 of the heat dissipation top plate 14, and the ends of adjacent extensions 142 in the top plate 141 form the inner end 144 of the heat dissipation top plate 14. The heat dissipation side plate 13 includes an outer side plate 131 and an inner side plate 132. A plurality of outer side plates 131 extend from the heat dissipation bottom plate 20 to the outer end 143, and a plurality of inner side plates 132 extend from the heat dissipation bottom plate 20 to the inner end 144.

[0057] That is, the outer side plate 131 and the inner side plate 132 of any first fin 11 and any second fin 12 are arranged in a relative configuration, and the outer side plate 131 of the first fin 11 and the inner side plate 132 of the adjacent second fin 12 are staggered in the longitudinal direction and spaced apart from each other by the airflow channels 101 in the transverse direction.

[0058] Similarly, the inner plate 132 of the first fin 11 and the outer plate 131 of the adjacent second fin 12 are staggered in the longitudinal direction and spaced apart from each other by the airflow channels 101 in the transverse direction.

[0059] The inner side plate 132 of the first fin 11 and the inner side plate 132 of the adjacent second fin 12 are staggered in the longitudinal direction and spaced apart from each other by the airflow channels 101 in the transverse direction.

[0060] Therefore, when the heat dissipation fin assembly 10 exchanges heat with the air, the air layer that exchanges heat with the multiple heat dissipation side plates 13 arranged in a staggered manner is also staggered from each other, so that the heat dissipation fin assembly 10 can fully exchange heat with the air in the airflow channel 101. The air located in the airflow channel 101 and absorbing more heat can diffuse outward through any of the openings 102, thereby accelerating the flow of hot and cold air and increasing the efficiency of heat exchange between the heat dissipation fin assembly 10 and the air, thereby accelerating the heat dissipation speed of the heat dissipation fin assembly 10.

[0061] A top opening 145 is formed between two adjacent extensions 142 of the heat dissipation top plate 14. The top opening 145 is connected to the airflow channel 101 to further reduce the wind resistance of the airflow channel 101 and increase the gas flow when the heat dissipation fin assembly 10 exchanges heat with the air.

[0062] like Figure 4 and Figure 5 As shown, the heat sink also includes a heat-conducting plate 30. Multiple rows of heat dissipation fins 10 are fixed to the heat-conducting plate 30 via the heat dissipation base plate 20. The base plate of the heat-conducting plate 30 absorbs heat through a functional module, and then conducts the heat to the heat dissipation fins 10 through the contact between the heat-conducting plate 30 and the heat dissipation base plate 20. The heat dissipation fins 10 absorb heat and dissipate it quickly through multiple first fins 11 and multiple second fins 12.

[0063] When the functional module fixed at a local position on the heat-conducting plate 30 continues to generate heat, the heat generated by the functional module is conducted to the heat dissipation base plate 20 through the heat-conducting plate 30. The part of the heat dissipation base plate 20 that is close to the functional module has relatively high heat, while the part that is far away from the functional module has relatively low heat, resulting in uneven heat distribution.

[0064] The heat-conducting portion of the heat-dissipating base plate 20 is conducted to the nearest heat-dissipating fin group 10. The heat spreads upward along the heat-dissipating side plate 13 of the heat-dissipating fin group 10 to the heat-dissipating top plate 14 and exchanges heat with the air inside and outside the heat-dissipating side plate 13. After heat exchange, the air inside the heat-dissipating side plate 13 diffuses outward through the opening 102 and the top opening 145 of the airflow channel 101.

[0065] The heat reaching the top heat sink 14 will be briefly absorbed by the top heat sink 14. At this time, the top heat sink 14 will distribute the heat conduction path. After the heat reaches the heat capacity of the top heat sink 14, the heat will be conducted downwards towards the heat sink side plate 13 with lower heat, and then conducted outwards through the heat sink base plate 20 to the heat sink fin group 10 in other positions, until the heat is distributed throughout the entire heat sink 100.

[0066] When the heat in the radiator 100 reaches dynamic equilibrium, due to the structural nature of the heat dissipation fin assembly 10, each of the heat dissipation side plates 13 accounts for a small proportion of the heat dissipation fin assembly 10, and its heat capacity is also relatively small. The heat conducted to the heat dissipation side plate 13 continuously exchanges heat with the surrounding air. The air with higher heat in the airflow channel 101 convection with the outside air with lower heat through the opening 102 and the top opening 145, so that each of the heat dissipation side plates 13 maintains a faster heat dissipation speed relative to the heat dissipation fin assembly 10, so that the heat from the heat dissipation base plate 20 is continuously conducted to the heat dissipation side plate 13, thereby effectively reducing the heat of the functional module.

[0067] like Figure 6 As shown, the radiator 100 of the second embodiment of the present invention is illustrated. The heat dissipation top plate 14 of the radiator 100 includes a top plate 141 and a plurality of extension portions 142 extending outward in opposite directions from both sides of the top plate 141 and arranged in an alternating manner. The top plate 141 and the extension portions 142 are respectively provided with grooves 146 extending through in the longitudinal direction. The heat capacity and heat dissipation area of ​​the heat dissipation top plate 14 are increased by the grooves 146.

[0068] The end of any of the extensions 142 forms the outer end 143 of the heat dissipation top plate 14, and the end of the top plate 141 adjacent to the extension 142 forms the inner end 144 of the heat dissipation top plate 14. The heat dissipation side plate 13 includes an outer side plate 131 and an inner side plate 132. A plurality of outer side plates 131 extend inward from the heat dissipation base plate 20 to the outer end 143, and a plurality of inner side plates 132 extend inward from the heat dissipation base plate 20 to the inner end 144.

[0069] like Figure 7 and Figure 8 The diagram illustrates a method for manufacturing the radiator 100 according to the first embodiment of the present invention, which includes the following steps.

[0070] (A) Cutting and stamping sheet metal to form a blank.

[0071] The material of the stamped sheet can be metals such as copper, aluminum, and aluminum alloy, and the thickness of the stamped sheet can be set to 0.1mm-0.5mm, preferably 0.3mm.

[0072] (B) Determine the stamping position of the blank, and determine the stamping distance between two adjacent stamping positions of the blank according to the preset height of the heat dissipation fin assembly 10.

[0073] (C) Move the blank to the stamping position to the die 200.

[0074] (D) Stamp the blank at the stamping position to form the shape of the heat dissipation top plate 14, continue stamping and move the heat dissipation top plate 14, and the blank part connected to the heat dissipation top plate 14 forms the outer side plate 131 and the inner side plate 132 respectively, until the heat dissipation fin assembly 10 is stamped and formed, wherein the heat dissipation top plate 14 includes a top plate 141 and a plurality of extensions 142 extending outward in opposite directions from both sides of the top plate 141 and arranged in an alternating manner.

[0075] (E) Move the blank according to the stamping pitch so that the next stamping position is aligned with the die 200.

[0076] (F) Repeat steps (D) to (F) until the blank is stamped to form a multi-row heat dissipation fin group 10 arranged horizontally and a heat dissipation base plate 20 connecting each row of heat dissipation fin group 10.

[0077] The manufacturing method of the radiator 100 may further include:

[0078] (G) Cut the heat-conducting plate according to the dimensions of the heat dissipation base plate 20 to form the heat-conducting plate 30.

[0079] The material of the heat-conducting plate can be metals such as copper, aluminum, and aluminum alloy, and the thickness of the heat-conducting plate can be set to 1mm-5mm, preferably 3mm.

[0080] (H) Fix the heat-conducting plate 30 and the heat dissipation base plate 20 to form the heat sink 100.

[0081] The heat-conducting plate 30 and the heat dissipation base plate 20 can be fixed by bonding with high thermal conductivity silicone 40. The high thermal conductivity silicone 40 fills the contact gap between the heat-conducting plate 30 and the heat dissipation base plate 20, reduces the interface thermal resistance, and ensures the heat conduction effect between the heat-conducting plate 30 and the heat dissipation base plate 20.

[0082] In addition, the heat dissipation base plate 20 can also be bonded to the heat conduction plate 30 with an adhesive made of epoxy resin, copper powder and other materials; or a portion of the heat dissipation base plate 20 can be welded to the heat conduction plate 30 by nickel welding, riveting or other methods, and the gap between the heat dissipation base plate 20 and the heat conduction plate 30 can be filled with high thermal conductivity silicone 40.

[0083] The manufacturing method of the radiator 100 may further include: (I) subjecting the radiator 100 to surface treatment, wherein the surface treatment method may be spray coating, anodizing, electroplating, etc., thereby further increasing the heat absorption and radiative heat dissipation capabilities of the radiator 100.

[0084] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention.

[0085] Therefore, it can be seen that the objective of this utility model has been fully and effectively achieved. The function and structural principle of this utility model have been shown and described in the embodiments. Without departing from the stated principle, the implementation of this utility model may have any variations or modifications. Therefore, this utility model includes all modifications within the spirit and scope of the following claims.

Claims

1. A heat sink, characterized by include: The heat dissipation fins are arranged horizontally in multiple rows and connected to a heat dissipation base plate. Each row of heat dissipation fins includes multiple first fins and multiple second fins that are integrally arched from the heat dissipation base plate and staggered in the longitudinal direction. The first fins and second fins are staggered in the horizontal direction.

2. The heat sink according to claim 1, wherein any first fin includes a first top plate and a first side plate extending from two opposite ends of the first top plate to the heat sink base plate, and any second fin includes a second top plate and a second side plate extending from two opposite ends of the second top plate to the heat sink base plate.

3. The radiator according to claim 2, wherein a plurality of first side plates and a plurality of second side plates serve as heat dissipation side plates of the heat dissipation fin assembly, and crisscrossing airflow channels are formed between the plurality of heat dissipation side plates, and an opening connecting the plurality of airflow channels is formed between two adjacent heat dissipation side plates.

4. The radiator according to claim 3, wherein the tops of the plurality of heat dissipation side plates are connected to form an integrally formed heat dissipation top plate, the heat dissipation top plate including a top plate and a plurality of extensions extending outward in opposite directions from both sides of the top plate and arranged in an alternating manner.

5. The radiator according to claim 4, wherein the end of any of the extensions forms the outer end of the heat dissipation top plate, the ends of adjacent extensions in the top plate form the inner end of the heat dissipation top plate, the heat dissipation side plate includes an outer side plate and an inner side plate, a plurality of outer side plates extend from the heat dissipation bottom plate to the outer end, and a plurality of inner side plates extend from the heat dissipation bottom plate to the inner end.

6. The radiator according to claim 3, wherein the heat dissipation top plate of the radiator includes a top plate and a plurality of extension portions extending outward in opposite directions from both sides of the top plate and arranged alternately, wherein the top plate and the extension portions are respectively provided with grooves extending through in the longitudinal direction.

7. The radiator according to claim 6, wherein the end of any of the extensions forms the outer end of the heat dissipation top plate, the end of the top plate adjacent to the extension forms the inner end of the heat dissipation top plate, the heat dissipation side plate includes an outer side plate and an inner side plate, a plurality of the outer side plates extend inwardly from the heat dissipation bottom plate to the outer end, and a plurality of the inner side plates extend inwardly from the heat dissipation bottom plate to the inner end.

8. The radiator according to claim 7, wherein a top opening is formed between two adjacent extensions of the heat dissipation top plate, the top opening communicating with the airflow channel.

9. The radiator according to any one of claims 1-8, wherein the radiator further includes a heat-conducting plate, and the plurality of rows of heat dissipation fins are fixed to the heat-conducting plate by the heat dissipation base plate.

10. The radiator according to claim 9, wherein the radiator has undergone surface treatment.

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