Radiator

Abstract

The utility model provides a radiator applied to an industrial and mining radiating lamp. The radiator comprises a substrate and a plurality of radiating plates. The substrate is provided with two opposite sides in the thickness direction of the substrate, one side is used for installing a lamp source, and the other side is provided with a plurality of inserting grooves. One side of each heat dissipation plate is provided with an insertion edge, and the insertion edges are inserted into the insertion grooves. According to the embodiment of the utility model, the substrate and the radiating plates of the radiator are two mutually independent components, the plurality of slots are formed in one side of the substrate in the thickness direction, and the plurality of radiating plates are correspondingly inserted into the plurality of slots, so that the substrate and the radiating plates can respectively select proper materials according to a lamp source and working conditions, and the radiating plates can be made of transparent materials. The structural performance and the heat dissipation performance of the radiator are optimized, and the production and manufacturing cost of heat dissipation is reduced.

Description

Technical Field

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

[0002] In industrial and mining lighting applications, heat dissipation performance is a key factor determining the reliability and lifespan of industrial and mining heat sinks. In related technologies, the lamp holder base and heat dissipation fins of industrial and mining heat sinks are often manufactured using a one-piece molding process, that is, by die casting or forging, to create an inseparable integral structure. This structure, during manufacturing, makes it difficult for components in different parts to adapt well to various operating conditions. Utility Model Content

[0003] The present invention provides a radiator for use in industrial and mining heat dissipation lamps, which can improve the technical problem that radiators in related technologies cannot adapt well to working conditions.

[0004] The heat sink provided by this utility model for use in industrial and mining heat dissipation lamps includes:

[0005] The substrate has two opposing sides along its thickness direction. One side is used to install the light source of the industrial and mining heat dissipation lamp, and the other side has multiple slots.

[0006] Multiple heat sinks, each heat sink having an insertion edge on one side, the insertion edge being inserted into the slot.

[0007] In one embodiment, the substrate is made of a first material, and the heat sink is made of a second material;

[0008] The thermal conductivity of the second material is greater than that of the first material.

[0009] In one embodiment, the first material is an aluminum alloy, and the second material is aluminum.

[0010] In one embodiment, each of the heat sinks has an opening, and the openings of the plurality of heat sinks are arranged opposite to each other.

[0011] In one embodiment, the substrate includes a body portion and a plurality of plug portions, the plurality of plug portions being integrally connected to the body portion; each plug portion includes two opposing and spaced-apart groove walls, and the slot is disposed between the two groove walls.

[0012] In one embodiment, a plurality of slots are provided on one side of the substrate in the thickness direction; at each slot, the substrate includes two slot walls facing the slot; the two slot walls are opposite to each other and spaced apart, and the slot is disposed between the two slot walls.

[0013] In one embodiment, the heat sink includes a heat sink body, and the insertion edge includes a first edge and a second edge. The first edge connects the heat sink body and the second edge. The heat sink body is coplanar with the first edge, and the second edge is located on one side of the first edge.

[0014] The first edge is disposed opposite to one groove wall, and the second edge is disposed opposite to another groove wall.

[0015] In one embodiment, the substrate includes a peripheral wall and two side walls, the peripheral wall being connected to one end of the two side walls, and the other ends of the two side walls being connected to each other away from the peripheral wall;

[0016] The slot extends from the side closest to the peripheral wall toward the junction of the two side walls.

[0017] In one embodiment, the heat sink includes a plurality of first heat sinks and a plurality of second heat sinks. Along the direction from the peripheral wall to the connection of the two side walls, the length of the first heat sink is greater than the length of the second heat sink. From one side wall to the other side wall, the first heat sink and the second heat sink are alternately arranged.

[0018] The first heat sink and the second heat sink include an outer end near the peripheral wall, and the outer ends of the first heat sink and the second heat sink are aligned circumferentially along the substrate.

[0019] In one embodiment, the substrate and the heat sink are ultrasonically welded or laser welded.

[0020] In one embodiment, the substrate is die-cast and the heat sink is stamped.

[0021] The beneficial effects of the embodiments of this utility model are as follows:

[0022] In this embodiment of the utility model, the substrate and the heat sink are set as two independent components. Multiple slots are provided on one side of the substrate in the thickness direction, and multiple heat sinks are inserted into the multiple slots accordingly. This allows the substrate and the heat sink to select appropriate materials according to the light source and operating conditions, which is beneficial to optimize the structural performance and heat dissipation performance of the heat sink and reduce the production and manufacturing cost of the heat sink. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of the heat sink provided in this embodiment of the utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the substrate provided in an embodiment of the present invention;

[0026] Figure 3 This is a cross-sectional schematic diagram of the radiator provided in an embodiment of the present invention;

[0027] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0028] Figure 5 This is a schematic diagram of the structure of the heat sink provided in an embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of the industrial and mining heat dissipation lamp provided in an embodiment of the present invention;

[0030] Figure 7 This is an exploded view of the industrial and mining heat dissipation lamp provided in this embodiment of the utility model.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Radiator;

[0033] 10. Substrate; 120. Slot; 11. Body; 12. Insertion part; 121. Slot wall; 13. Peripheral wall; 14. Side wall;

[0034] 20. Heat sink; 20a. First heat sink; 20b. Second heat sink; 220. Through port; 21. Heat sink body; 22. Insertion edge; 221. First edge; 222. Second edge; 2221. Welding end; 23. Outer end; 24. Inner end;

[0035] 1000, Industrial and mining heat dissipation lamp; 100, Heat dissipation component; 200, Power supply box; 300, Light source. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model. In the present utility model, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0037] In industrial and mining lighting applications, heat dissipation performance is a key factor determining the reliability and lifespan of industrial and mining heat sinks. In related technologies, the lamp base and heat dissipation fins of industrial and mining heat sinks are often manufactured using a one-piece molding process, that is, by die casting or forging, to create an inseparable integral structure. This manufacturing method is not conducive to ensuring that the components of different parts of the industrial and mining heat sink can adapt well to different working conditions.

[0038] For example, if the lamp holder base is made of a high-strength alloy to withstand mechanical stress, while the heat sink fins could be made of a lighter material, the same material must be chosen due to the one-piece molding process. It is clear that this one-piece molding process in related technologies undoubtedly increases material costs.

[0039] The present invention provides a radiator for use in industrial and mining heat dissipation lamps, which can improve the technical problems of radiators not being able to adapt well to working conditions and radiators having high costs in related technologies.

[0040] Please see Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of the heat sink provided in an embodiment of the present invention. Figure 2 This is a schematic diagram of the structure of the substrate provided in an embodiment of the present invention.

[0041] The radiator 1 provided in this application for use in industrial and mining heat dissipation lamps includes a substrate 10 and a plurality of heat dissipation plates 20.

[0042] The substrate 10 is used to mount the lamp source and can be made of a material with high thermal conductivity and good heat dissipation performance to absorb the heat generated by the lamp source during operation of the industrial and mining heat dissipation lamp. Multiple heat sinks 20 are disposed on the substrate 10. The heat sinks 20 are also made of a material with high thermal conductivity and good heat dissipation performance. The heat sinks 20 release the heat absorbed by the substrate 10 from the lamp source into the air, thereby preventing heat accumulation.

[0043] The substrate 10 has two opposing sides along its thickness direction. One side of the substrate 10 in the thickness direction is used to mount a lamp source, and the other side of the substrate 10 in the thickness direction is provided with multiple slots 120.

[0044] Each heat sink 20 has a plug-in edge 22 on one side, which is inserted into the slot 120.

[0045] In this embodiment of the utility model, the substrate 10 and the heat sink 20 of the heat sink 1 are set as two independent components. Multiple slots 120 are provided on one side of the substrate 10 in the thickness direction, and multiple heat sinks 20 are correspondingly inserted into the multiple slots 120. This allows the substrate 10 and the heat sink 20 to select appropriate materials according to the light source and operating conditions, which is beneficial to optimize the structural performance and heat dissipation performance of the heat sink 1 and reduce the production and manufacturing cost of the heat sink 1.

[0046] In one embodiment, the substrate 10 can be die-cast, and the heat sink 20 can be stamped. Compared with the related art where the substrate 10 and heat sink 20 of the heat sink 1 are integrally die-cast, this embodiment manufactures the substrate 10 and heat sink 20 separately. This allows designers to flexibly design substrates 10 and heat sink 20 with corresponding performance characteristics according to the operating conditions of the lamp source, and then assemble them into heat sinks 1 that can adapt to lamp sources of different power. For example, several types of substrates 10 and several types of heat sinks 20 can be designed and manufactured. These types of substrates 10 and heat sinks 20 can be assembled according to the operating conditions and power of the lamp source, thereby obtaining several heat sinks 1 with different heat dissipation capabilities, so that different heat sinks 1 can adapt to different power lamp sources and operating conditions.

[0047] In one embodiment, the substrate 10 may be made of a first material, and the heat sink 20 may be made of a second material. The first material and the second material may be, but are not limited to, various elemental metals and their alloys with excellent thermal conductivity, and the thermal conductivity of the second material is greater than that of the first material.

[0048] In this embodiment, the substrate 10 and the heat sink 20 are made of different materials, resulting in a difference in their thermal conductivity, which is beneficial to improving the heat transfer rate. For example, the first material can be an aluminum alloy, which has a low density, good strength and rigidity, and good thermal conductivity, allowing the substrate 10 to better support the lamp source and absorb the heat generated during lamp operation. For instance, in some embodiments of the invention, the first material can be die-cast aluminum alloy ADC12 or AlSi9Cu3, giving the substrate 10 a certain structural strength and formability. For example, the second material can be aluminum, which has a lower density and better thermal conductivity, allowing the heat sink 20 to better transfer and release heat. In some embodiments, the second material can be high-purity aluminum, such as 1060 aluminum or 1070 aluminum, forming an efficient heat transfer through its combination with the substrate 10.

[0049] Compared with the heat sink 1 made of die-cast aluminum alloy in some embodiments, the heat sink 1 provided in this embodiment of the utility model uses a combination of aluminum alloy and aluminum. On the one hand, the heat sink 1 has a lightweight and reliable structure, is easy to install, and has low manufacturing cost. On the other hand, the combination of different materials improves the heat transfer rate, which can effectively reduce the heat accumulation when the lamp source is working and extend the service life of the lamp source.

[0050] Please see Figures 2 to 4 , Figure 3 This is a cross-sectional schematic diagram of the radiator provided in an embodiment of the present invention. Figure 4 yes Figure 3 Enlarged schematic diagram at point A. In one embodiment, the substrate 10 may include a body portion 11 and a plurality of plug portions 12, the plurality of plug portions 12 being integrally connected to the body portion 11, each plug portion 12 including two opposing and spaced-apart groove walls 121, and a slot 120 being disposed between the two groove walls 121.

[0051] For example, each insertion portion 12 protrudes from the body portion 11. The insertion portion 12 has a top end away from the body portion 11, and a slot 120 is formed at the top end of the insertion portion 12. The insertion portion 12 includes two opposing and spaced groove walls 121 facing the slot 120. This allows one side of the insertion edge 22 of the heat sink 20 to face one groove wall 121 and the other side to face the other groove wall 121 after the insertion edge 22 of the heat sink 20 is inserted into the slot 120. Compared with the design where the heat sink 20 and the substrate 10 are integrally formed, this embodiment of the present invention, by integrally providing the insertion portion 12 with the slot 120 on the surface of the substrate 10, and inserting the heat sink 20 into the slot 120, can help improve the structural strength of the connection between the substrate 10 and the heat sink 20.

[0052] Understandably, in another embodiment, the substrate 10 has a plurality of slots on one side in the thickness direction. At each slot, the substrate 10 includes two slot walls 121 facing the slot. The two slot walls 121 are opposite to each other and spaced apart. A slot 120 is disposed between the two slot walls 121. When the insertion edge 22 of the heat sink 20 is inserted into the slot 120, one side of the insertion edge 22 is opposite to one slot wall 121 and the other side is opposite to the other slot wall 121. This design can also improve the structural strength of the connection between the substrate 10 and the heat sink 20.

[0053] Please see Figure 2 In one embodiment, the substrate 10 includes a peripheral wall 13 and two side walls 14. The peripheral wall 13 is connected to one end of the two side walls 14, and the two side walls 14 are connected to the other end of the peripheral wall 13. The slots 120 extend from the side near the peripheral wall 13 toward the connection point of the two side walls 14. In this embodiment, the multiple slots 120 are designed to extend from the side near the peripheral wall 13 toward the connection point of the two side walls 14, that is, the multiple slots 120 are radially distributed. This makes the multiple heat sinks 20 arranged in a "ray" pattern after they are connected to the substrate 10, which helps to shorten the heat transfer path and avoid heat accumulation.

[0054] Please see Figure 4 and Figure 5 , Figure 5 This is a schematic diagram of the structure of the heat sink provided in this embodiment of the present invention. The heat sink 20 may include a heat sink body 21, and an insertion edge 22 is connected to one side of the heat sink body 21.

[0055] In some embodiments, the insertion edge 22 includes a first edge 221 and a second edge 222. The first edge 221 connects the heat dissipation body 21 and the second edge 222. The heat dissipation body 21 and the first edge 221 are coplanar. The second edge 222 is located on one side of the first edge 221. The insertion edge 22 is inserted into the slot 120. The first edge 221 is opposite to one slot wall 121, and the second edge 222 is opposite to another slot wall 121.

[0056] Compared with some embodiments where the insertion edge 22 of the heat sink 20 is designed as a single layer, this embodiment bends the first edge 221 and the second edge 222 of the insertion edge 22 to make the insertion edge 22 a double-layer structure, which can improve the structural strength of the insertion edge 22. When the heat sink 20 is inserted into the substrate 10, it is also beneficial to increase the contact area between the heat sink 20 and the substrate 10. Thus, on the one hand, the connection strength between the heat sink 20 and the substrate 10 can be improved, and on the other hand, the heat transfer efficiency can be improved.

[0057] In one embodiment, each heat sink 20 may have an opening 220, and the openings 220 of multiple heat sinks 20 are arranged opposite each other. For example, each heat sink 20 may have one, two, or three openings 220. The openings 220 may be obtained by punching holes. Multiple heat sinks 20 are inserted into the substrate 10, with adjacent heat sinks 20 arranged opposite each other and spaced apart, and the openings 220 of adjacent heat sinks 20 are arranged opposite each other. The advantage of this design is that it can improve the airflow capacity between multiple heat sinks 20, thereby improving the heat dissipation rate of the industrial and mining heat sink lamp. By opening the openings 220 in the heat sinks 20, the weight of the heat sinks 20 can also be reduced, making the overall heat sink 1 lighter.

[0058] Please see Figure 1 In one embodiment, the heat sink 20 may include a plurality of first heat sinks 20a and a plurality of second heat sinks 20b. In the direction from the peripheral wall 13 to the connection of the two side walls 14, the length of the first heat sink 20a is greater than the length of the second heat sink 20b. In the direction from one side wall 14 to the other side wall 14, the first heat sinks 20a and the second heat sinks 20b are alternately arranged.

[0059] The first heat sink 20a and the second heat sink 20b each have an outer end 23 near the peripheral wall 13. The outer ends of the first heat sink 20a and the second heat sink 20b are aligned along the circumference of the substrate 10. In this embodiment, by alternating the arrangement of the first heat sink 20a and the second heat sink 20b of different lengths, the outer ends of the multiple first heat sinks 20a and the multiple second heat sinks 20b are aligned along the circumference of the substrate 10 on one side near the peripheral wall 13. This design avoids the multiple heat sinks 20 from being too densely packed at the connection point near the two side walls 14, thereby effectively reducing heat accumulation at the inner ends 24 of the multiple heat sinks 20.

[0060] The heat sink 20 can be soldered to the substrate 10. In some embodiments, the substrate 10 and the heat sink 20 can be soldered using ultrasonic welding or laser welding. For example, the substrate 10 and the heat sink 20 can be soldered using ultrasonic-assisted brazing. Ultrasonic-assisted brazing is an advanced joining technology that introduces ultrasonic vibration energy to enhance the welding process based on traditional brazing techniques. In this embodiment, a high-frequency electrical signal (typically 15kHz-70kHz) can be converted into mechanical vibration by an ultrasonic transducer and transmitted to the brazing area via an amplitude transformer, achieving a reliable connection between the substrate 10 and the heat sink 20 at a relatively low temperature.

[0061] This embodiment uses ultrasonic-assisted brazing. The high-frequency mechanical vibration of the ultrasonic waves can destroy the oxide film (such as Al2O3) on the surface of the two welded parts (substrate 10 and heat sink 20), and effective wetting can be achieved without relying on flux. Compared with traditional brazing, it can reduce the welding temperature and thermal deformation.

[0062] The brazing filler metal used in ultrasonic-assisted brazing can be a zinc-aluminum alloy filler metal. This embodiment uses a zinc-aluminum alloy filler metal because of its moderate melting point (typically 380℃-480℃), good fluidity, and low cost. It is a commonly used filler metal in ultrasonic-assisted brazing, suitable for various metal materials (such as aluminum and aluminum alloys, copper and copper alloys). Combining the zinc-aluminum alloy filler metal with ultrasonic vibration reduces the impact on the thermal conductivity of the heat sink 20 when the substrate 10 is connected to the heat sink 20 due to the low-temperature characteristics of the filler metal. Ultrasonic vibration ensures that the filler metal uniformly fills the contact surface, improving heat transfer efficiency compared to an integrated aluminum heat sink 1.

[0063] Please see Figure 4 The second edge 222 includes a welding end 2221 that is separate from the first edge 221. In some embodiments, the welding end 2221 may be flush with the top edge of its opposite groove wall 121. This design facilitates the placement of solder and welding, allowing the heat sink 20 and the substrate 10 to be welded together along the end face of the welding end 2221 of the second edge 222 to form an integral heat dissipation structure.

[0064] Based on the radiator 1 of this utility model embodiment, this utility model also provides an industrial and mining heat dissipation lamp.

[0065] Please see Figure 5 and Figure 6 , Figure 5 This is a schematic diagram of the structure of the heat dissipation lamp provided in this embodiment of the utility model. Figure 6 This is an exploded view of the industrial and mining heat dissipation lamp provided in this embodiment of the present invention. The industrial and mining heat dissipation lamp 1000 provided in this embodiment of the present invention may include a heat dissipation component 100, a power supply box 200, and a lamp source 300.

[0066] The light source 300 can obtain electrical energy from the power supply box 200 and convert the electrical energy into light energy. The heat dissipation assembly 100 is used to absorb and transfer the heat generated by the light source 300 during operation. The heat dissipation assembly 100 has a first mounting side and a second mounting side, with the power supply box 200 located on the first mounting side and the light source 300 located on the second mounting side.

[0067] The heat dissipation assembly 100 may include a plurality of heat sinks 1, which are circumferentially adjacent to each other. For example, the heat dissipation assembly 100 may include four heat sinks 1, the included angle between the two sidewalls 14 of each heat sink 1 may be a right angle, and the sidewalls of the four heat sinks 1 are connected to form a circular heat dissipation assembly 100. It is understood that the heat dissipation assembly 100 may also have one, two, three, or even other numbers of heat sinks 1.

[0068] In summary, the beneficial technical effects of the radiator 1 and the industrial and mining heat dissipation lamp 1000 provided by this utility model embodiment are as follows:

[0069] Firstly, the substrate 10 and heat sink 20 of the radiator 1 are set as two independent components, which allows the substrate 10 and heat sink 20 to select appropriate materials according to the light source 300 and operating conditions, which is beneficial to optimizing the structural performance and heat dissipation performance of the radiator 1.

[0070] Secondly, the substrate 10 and the heat sink 20 are designed to be manufactured separately, which makes it easier for designers to design substrate 10 and heat sink 20 with corresponding performance according to the working conditions of industrial and mining heat sink lamps, and then assemble heat sink 1 that is compatible with different power lamp sources 300.

[0071] Thirdly, the substrate 10 is made of aluminum alloy and the heat sink 20 is made of aluminum. This makes the heat sink 1 structure lightweight and reliable, easy to install, and reduces manufacturing costs. It also allows for the combination of different materials to improve the heat transfer rate, effectively reduce heat accumulation during lamp operation, and extend the life of the lamp.

[0072] Fourthly, the substrate 10 includes a body portion 11 and a plurality of integrally connected insertion portions 12 connected to the body portion 11. When the insertion edge 22 of the heat sink 20 is inserted into the slot 120, one side of the insertion edge 22 is opposite to one groove wall 121 of the insertion portion 12, and the other side is opposite to another groove wall 121 of the insertion portion 12, which increases the contact mating area and helps to improve the structural strength of the connection between the substrate 10 and the heat sink 20.

[0073] Fifthly, the first edge 221 and the second edge 222 of the insertion edge 22 are bent so that the insertion edge 22 has a double-layer structure, which improves the structural strength of the insertion edge 22. This can help improve the connection strength at the connection between the heat sink 20 and the substrate 10, and can also help improve the heat transfer efficiency.

[0074] Sixthly, the substrate 10 and the heat sink 20 are brazed using ultrasonic assistance, which can achieve effective wetting without relying on flux, thereby reducing the welding temperature and thermal deformation.

[0075] The brazing filler metal used in ultrasonic-assisted brazing is a zinc-aluminum alloy. The ultrasonic vibration ensures that the filler metal fills the contact surface evenly, which can improve the heat conduction efficiency compared to the integrated aluminum heat sink 1.

[0076] Seventhly, the heat sink 20 has an opening 220, which can improve the heat dissipation rate and reduce the weight of the heat sink 20.

[0077] Eighthly, the multiple slots 120 are arranged radially, so that after the multiple heat sinks 20 are connected to the substrate 10, the multiple heat sinks 20 are arranged in a "ray" shape, which helps to shorten the heat transfer path and avoid heat accumulation.

[0078] Ninthly, the first heat sink 20a and the second heat sink 20b are alternately arranged, and the first heat sink 20a and the second heat sink 20b are aligned along the circumference of the substrate 10 on the side near the peripheral wall 13. This design can avoid the multiple heat sinks 20 being too dense at the connection point near the two side walls 14, thereby effectively reducing heat accumulation.

[0079] The embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A radiator for use in industrial and mining heat dissipation lamps, characterized in that, include: The substrate has two opposing sides along its thickness direction. One side is used to install the light source of the industrial and mining heat dissipation lamp, and the other side has multiple slots. Multiple heat sinks, each heat sink having an insertion edge on one side, the insertion edge being inserted into the slot.

2. The heat spreader of claim 1, wherein, The substrate is made of a first material, and the heat sink is made of a second material; The thermal conductivity of the second material is greater than that of the first material.

3. The heat sink of claim 2, wherein, The first material is aluminum alloy, and the second material is aluminum.

4. The heat spreader of claim 1, wherein, Each of the heat sinks has an opening, and the openings of the multiple heat sinks are arranged opposite each other.

5. The heat spreader of claim 1, wherein, The substrate includes a body and a plurality of plug-in portions, the plurality of plug-in portions being integrally connected to the body; each plug-in portion includes two opposing and spaced-apart groove walls, and the slot is disposed between the two groove walls.

6. The heat spreader of claim 1, wherein, The substrate has a plurality of slots on one side in the thickness direction; at each slot, the substrate includes two slot walls facing the slot; the two slot walls are opposite to each other and spaced apart, and the slot is located between the two slot walls.

7. The heat sink of claim 5 or 6, wherein, The heat sink includes a heat sink body, and the insertion edge includes a first edge and a second edge. The first edge connects the heat sink body and the second edge. The heat sink body is coplanar with the first edge, and the second edge is located on one side of the first edge. The first edge is disposed opposite to one groove wall, and the second edge is disposed opposite to another groove wall.

8. The heat sink of any one of claims 1-6, wherein, The substrate includes a peripheral wall and two side walls, the peripheral wall being connected to one end of the two side walls, and the other ends of the two side walls being connected away from the peripheral wall; The slot extends from the side closest to the peripheral wall toward the junction of the two side walls.

9. The heat sink of claim 8, wherein, The heat sink includes a plurality of first heat sinks and a plurality of second heat sinks. Along the direction from the peripheral wall to the connection of the two side walls, the length of the first heat sink is greater than the length of the second heat sink. From one side wall to the other side wall, the first heat sink and the second heat sink are alternately arranged. The first heat sink and the second heat sink include an outer end near the peripheral wall, and the outer ends of the first heat sink and the second heat sink are aligned circumferentially along the substrate.

10. The heat sink of any one of claims 1-6, wherein, The substrate and the heat sink are ultrasonically welded or laser welded together.

11. The heat sink of any of claims 1-6, wherein, The substrate is die-cast and the heat sink is stamped.

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