Unequal-thickness multi-cavity tubular vapor chamber

Abstract

The utility model discloses an unequal-thickness multi-cavity tubular vapor chamber which comprises a heat conduction pipe body, a first sealing part is arranged at one end of the heat conduction pipe body, a second sealing part is arranged at the other end of the heat conduction pipe body, cooling liquid is arranged in the heat conduction pipe body, the heat conduction pipe body comprises an upper sheet body and a lower sheet body, and an upper protruding strip is arranged on the inner side of the middle of the upper sheet body. An upper protruding strip is arranged on the inner side of the middle of the upper sheet body and extends along the two ends of the upper sheet body, a lower protruding strip is arranged on the inner side of the middle of the lower sheet body and extends along the two ends of the lower sheet body, and the upper protruding strip is fixedly connected with the lower protruding strip. The upper raised lines and the lower raised lines are arranged on the inner side of the middle part of the uniform temperature plate, so that the installation and use strength of the uniform temperature plate is enhanced, the width size of the uniform temperature plate can be expanded, the uniform temperature plate can be applied to a heat source with a wider size, the strength of the uniform temperature plate cannot be reduced due to size expansion, the overall strength is ensured, the heat dissipation effect is also ensured, and the service life of the uniform temperature plate is prolonged. The upper raised lines and the lower raised lines are arranged in the middle, so that excessive internal space is not occupied, and the circulating heat conduction efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger preparation technology, and in particular to a multi-cavity heat exchanger with unequal thickness. Background Technology

[0002] With the continuous increase in heat flux density and power demand of electronic chips, traditional air cooling technology can no longer meet the heat dissipation needs of highly integrated electronic chips, and liquid cooling technology is gradually becoming the mainstream in the market.

[0003] Currently, liquid cooling technology includes direct cooling and indirect cooling. Direct cooling involves filling the chassis with an insulating liquid, such as fluorinated liquid, which directly contacts the electronic chips to dissipate heat. This method is limited by the insulating liquid, is costly, and difficult to repair, so it is rarely used in the market. Indirect cooling involves creating liquid flow channels inside the liquid cooling plate. The fluid conducts heat away through the contact zone between the liquid cooling plate and the electronic chips. Because it avoids direct contact between the fluid and the electronic chips, indirect cooling is more popular among existing liquid cooling technologies. However, creating liquid flow channels inside the liquid cooling plate is a complex and costly process, and it cannot guarantee high heat dissipation efficiency. Liquid cooling plates are prone to deformation under pressure during installation and use, which seriously affects the overall heat dissipation performance. In order to ensure a certain installation strength, the width of the liquid cooling plate cannot be expanded. Therefore, liquid cooling plates with small width cannot be used on large chips. To solve the above problems, the existing technology improves the installation strength of the liquid cooling plate by setting a separate support structure in the cavity of the liquid cooling plate. The support structure is composed of two or more columnar objects, and each columnar object is set inside the liquid cooling plate with intervals between them. Too many columnar objects not only occupy a lot of internal space, affecting the circulation of coolant, but also require a lot of manual labor, with tedious and complicated processes and long preparation time.

[0004] Therefore, it is necessary to provide a multi-cavity heat exchanger with unequal thickness. Utility Model Content

[0005] The purpose of this utility model is to address the aforementioned problems by providing a multi-cavity heat exchanger with unequal thickness. By providing an upper and lower convex strip on the inner side of the heat exchanger's center, and connecting the upper and lower convex strips, the installation and usage strength of the heat exchanger is enhanced. This allows for the expansion of the heat exchanger's width, enabling its application to wider heat sources without compromising its strength due to the increased size. This ensures both overall strength and effective heat dissipation. The upper and lower convex strips are positioned in the center, minimizing internal space occupation and improving the efficiency of circulating heat conduction.

[0006] To achieve the above-mentioned objectives, the technical solution adopted by this utility model is as follows:

[0007] According to one aspect of the present invention, a multi-cavity heat exchange plate with unequal thickness is provided, including a heat-conducting pipe body with coolant disposed inside, a first sealing part is provided at one end of the heat-conducting pipe body and the first sealing part is integrally connected with the heat-conducting pipe body, and a second sealing part is provided at the other end of the heat-conducting pipe body and the second sealing part is integrally connected with the heat-conducting pipe body.

[0008] The heat pipe body includes an upper plate and a lower plate. An upper protrusion is provided on the inner side of the middle part of the upper plate, and the upper protrusion extends to both ends along the longitudinal direction of the upper plate. A lower protrusion is provided on the inner side of the middle part of the lower plate, and the lower protrusion extends to both ends along the longitudinal direction of the lower plate. The upper protrusion and the lower protrusion are fixedly connected.

[0009] Preferably, the lateral dimensions of the upper convex strip and the lower convex strip gradually decrease from the bottom to the top, the top end faces of the upper convex strip and the lower convex strip are planar, and the top of the upper convex strip and the top of the lower convex strip are fixedly connected.

[0010] Preferably, it also includes a liquid-absorbing core, which is fixedly disposed on the inner sidewall of the upper sheet and the outer sidewall of the upper and lower protrusions.

[0011] Preferably, heat dissipation fins are provided on the outer side wall of the upper plate, and the heat dissipation fins are fixedly connected to the upper plate.

[0012] Preferably, the heat dissipation fins include a first zigzag fin and a second zigzag fin, the first zigzag fin and the second zigzag fin are arranged alternately in sequence along the transverse direction of the upper plate, the first zigzag fin and the second zigzag fin are fixedly connected, and the crests of the first zigzag fin and the crests of the second zigzag fin are staggered, and both the first zigzag fin and the second zigzag fin extend longitudinally along the upper plate.

[0013] Preferably, both the first and second zigzag fins have square wave cross-sections.

[0014] Preferably, the heat dissipation fins include a third zigzag fin group, which includes a plurality of third zigzag fins arranged sequentially along the longitudinal direction of the upper plate, and the plurality of third zigzag fins are connected in sequence as one unit, and the crests of the third zigzag fins are arranged in a wavy shape along the transverse direction of the upper plate.

[0015] Preferably, the heat dissipation fins include a fourth zigzag fin group, which includes a plurality of fourth zigzag fins arranged sequentially along the transverse direction of the upper plate, and the plurality of fourth zigzag fins are connected in sequence as one unit, with the crests of the fourth zigzag fins arranged in a straight line along the longitudinal direction of the upper plate.

[0016] Preferably, a method for preparing a multi-cavity heat exchanger with unequal thickness includes the following steps:

[0017] S1. Select a planar substrate and divide the planar substrate into an upper sheet area, a bending area and a lower sheet area. The upper sheet area and the lower sheet area have the same size. Roll a rib in the middle of the upper sheet area to roll an upper protrusion strip that is set along the longitudinal direction of the upper sheet. Roll a rib in the middle of the lower sheet area to roll a lower protrusion strip that is set along the longitudinal direction of the lower sheet.

[0018] S2. After the rolling and pressing of the ribs is completed, the side of the upper sheet area away from the bending area is rolled along the longitudinal direction of the upper sheet to roll out an upper connecting part with an arc. The upper connecting part is bent towards the side of the upward protrusion. The side of the lower sheet area away from the bending area is rolled along the longitudinal direction of the lower sheet to roll out a lower connecting part with an arc. The lower connecting part is bent towards the side of the downward protrusion. Then the middle part of the bending area is rolled to bring the upper connecting part and the lower connecting part closer to each other to form a U-shaped material. The upper connecting part and the lower connecting part are welded to form an O-shaped tube.

[0019] S3. Roll the two opposite sides of the O-ring until the corresponding upper and lower convex strips contact each other. At this time, the O-ring becomes an elliptical tube. Cut the elliptical tube to form tube segments. Clean the tube segments and check for leaks.

[0020] S4. Weld the contact point between the upper and lower convex strips in the pipe section, then punch one end of the pipe section to make the upper and lower sides of the end in close contact, and weld the contact part to form a semi-sealed pipe section. Introduce liquid into the open end of the semi-sealed pipe section for water testing. After the water testing, evacuate the semi-sealed pipe section from the open end and inject coolant.

[0021] S5. Stamp and weld the open end of the semi-sealed pipe section to seal both ends of the pipe section and form a temperature equalization plate.

[0022] Preferably, step S5 further includes the following step:

[0023] Select heat dissipation fins and attach them tightly to one outer wall of the heat spreader.

[0024] Welding is performed at the contact point between the heat dissipation fins and the heat spreader to fix the heat dissipation fins to the outer wall of the heat spreader.

[0025] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0026] 1. This utility model strengthens the installation and use of the heat exchange plate by setting an upper convex strip and a lower convex strip on the inner side of the middle part of the heat exchange plate, and the upper convex strip is connected to the lower convex strip. This allows the width of the heat exchange plate to be expanded and applied to a wider heat source without the strength of the heat exchange plate decreasing due to the expansion of the size. This ensures both the overall strength and the heat dissipation effect.

[0027] 2. The upper and lower convex strips of this utility model are located in the middle, which does not occupy too much internal space and improves the efficiency of heat conduction.

[0028] 3. This utility model only requires rolling out the upper and lower convex strips to ensure the overall strength of the temperature equalization plate. The manufacturing steps are simple, the process is few, and the preparation efficiency is high.

[0029] 4. The connection between the upper and lower convex strips of this utility model is equivalent to dividing the internal space of the heat spreader into two relatively independent spaces. The heat spreader can be applied to two different chips to dissipate heat from the two chips, thereby improving the utilization rate of the heat spreader. Attached Figure Description

[0030] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0031] Figure 2 This is a cross-sectional view of the internal structure of this utility model;

[0032] Figure 3 This is a schematic diagram of the structure of the rolling and pressing equipment of this utility model;

[0033] Figure 4 This is a structural schematic diagram of the roller device of this utility model;

[0034] Figure 5 This is a structural schematic diagram of the welding station of this utility model;

[0035] Figure 6 This is a schematic diagram of the heat dissipation fins in Embodiment 1 of this utility model;

[0036] Figure 7-10 These are simulation cloud maps of controls 1-3 and Example 1 in the comparative experiment of this utility model;

[0037] Figure 11 This is a schematic diagram of the heat dissipation fin structure of Embodiment 2 of this utility model;

[0038] Figure 12 This is a schematic diagram of the heat dissipation fin structure of Embodiment 3 of this utility model;

[0039] Figure 13-16 These are simulation cloud maps of controls 1-3 and Example 1 in the comparative experiment of this utility model.

[0040] In the attached diagram, 1 is the heat pipe body; 2 is the upper plate; 3 is the lower plate; 4 is the upper convex strip; 5 is the lower convex strip; 6 is the first sealing part; 7 is the second sealing part; 8 is the first zigzag fin; 9 is the second zigzag fin; 10 is the third zigzag fin; and 11 is the fourth zigzag fin. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are merely to provide the reader with a thorough understanding of one or more aspects of the utility model, and these aspects can be achieved even without these specific details.

[0042] Please see Figures 1 to 16 This utility model provides a multi-cavity heat exchange plate with unequal thickness, and the technical solution is as follows:

[0043] like Figure 1-2 As shown, a multi-cavity heat spreader with unequal thickness is disclosed. The heat spreader includes a heat-conducting tube body 1, which is formed by bending a single piece and connecting it on both sides. The heat-conducting tube body 1 includes an upper plate 2 and a lower plate 3. An upper protrusion 4 is provided on the inner side of the middle portion of the upper plate 2. The upper protrusion 4 extends longitudinally to both ends of the upper plate 2. A lower protrusion 5 corresponding to the upper protrusion 4 is provided on the inner side of the middle portion of the lower plate 3. The lower protrusion 4 extends longitudinally to both ends of the lower plate 3. The upper protrusion 4 and the lower protrusion 5 are fixedly connected. By setting the upper protrusion 4 and the lower protrusion 5, the installation strength of the upper plate 2 and the lower plate 3 is increased. This prevents the strength of the resulting heat spreader from decreasing due to the increased width, making it less prone to deformation during installation and use. This avoids affecting heat dissipation performance due to tube deformation. Furthermore, the increased installation and use strength of the heat spreader due to the upper protrusion 4 and the lower protrusion 5 allows the tube to be made very thin, creating a structure of unequal thickness between the protrusions and the rest of the tube. Thinner tubes are more conducive to heat dissipation while maintaining sufficient strength, ensuring both strength and heat dissipation effect. The lateral dimensions of both the upper protrusion 4 and the lower protrusion 5 gradually decrease from bottom to top, and their top ends are flat. The top of the upper protrusion 4 is fixedly connected to the top of the lower protrusion 5. The upper protrusion 4 and the lower protrusion 5 are formed by rolling and pressing, hence the gradual decrease in lateral dimensions from bottom to top. Furthermore, in order to improve the tightness of the connection between the upper convex strip 4 and the lower convex strip 5, the top of both the upper convex strip 4 and the lower convex strip 5 are set to be flat. This not only ensures a larger contact area between the upper convex strip 4 and the lower convex strip 5, but also facilitates the welding of the upper convex strip 4 and the lower convex strip 5, providing more reliable support for the whole.

[0044] It should be noted that, as Figure 3As shown, both the upper convex strip 4 and the lower convex strip 5 are rolled by a rolling and pressing device. The rolling and pressing device includes a base with a pressing groove, and a pressing die assembly. The pressing die assembly is controlled by a cylinder and a moving component. The pressing die assembly includes two spaced-apart dies, and the moving component consists of rollers and a motor. When the sheet is placed in the pressing groove, the die is first controlled to press one side of the sheet. The portion of the sheet pressed by the die becomes thinner, while the unpressed portion remains, forming the upper convex strip 4. The lower convex strip 5 is pressed out using the same steps. The upper convex strip 4 and the lower convex strip 5 are the thicker parts of the sheet. When this sheet is used to manufacture the heat pipe body 1, it strengthens the overall strength of the heat pipe body 1, and the thinned portion improves heat dissipation performance. Figure 4 As shown, the sheet is formed into a heat-conducting tube 1 using a roller device. Specifically, an upper roller with gradually decreasing thickness is used to roll the sheet, while a concave roller with gradually decreasing width is used to gradually tighten the sheet from a flat state to a U-shape. Finally, the tightening roller is replaced, and the U-shape is rolled again to make the two sides of the U-shape fit tightly together. Finally, the tightly fitted two sides are welded together using a welding station assembly to form an O-shaped tube. The welding station assembly is shown below. Figure 5 As shown.

[0045] A first sealing part 6 is provided at one end of the heat pipe body 1, and the first sealing part 6 is integrally connected to the heat pipe body 1. A second sealing part 7 is provided at the other end of the heat pipe body 1, and the second sealing part 7 is integrally connected to the heat pipe body 1. Both the first sealing part 6 and the second sealing part 7 are formed by stamping at the end of the heat pipe body 1 using a stamping device. Specifically, the end of the heat pipe body 1 is placed in the stamping device, and the upper and lower sides of the end of the heat pipe body 1 are stamped using the stamping device. The end of the upper plate 2 is bent inward to form a first bend, and the end of the lower plate 3 is bent inward to form a second bend. The stamping makes the upper and lower sides of the end of the heat pipe body fit tightly together. Finally, the tightly fitted parts on the upper and lower sides are welded using a high-frequency welding station. The other end of the heat pipe body is operated in the same way to seal both ends of the heat pipe body to form a heat spreader.

[0046] The vapor chamber contains coolant. As the temperature rises at the heated end of the vapor chamber, the coolant evaporates, and the gaseous coolant rises to the cold end on the upper side of the vapor chamber. After liquefying, it falls back to the hot end, continuously circulating to achieve heat dissipation. Within the vapor chamber, the upper protrusion 4 and the lower protrusion 5 effectively divide the chamber into two smaller cavities. These two smaller cavities can have relatively independent gas-liquid circulation, allowing the vapor chamber to be used to cool different chips simultaneously.

[0047] Furthermore, wicking elements are provided on the inner wall of the upper body and the outer walls of the upper and lower protrusions 4 and 5. Based on capillary effect and fluid dynamics principles, when liquid comes into contact with the surface of the wicking element, it is rapidly drawn in and diffuses along the fiber network due to the microporous structure inside the wicking element, forming a "wicking" phenomenon. This effect allows the liquid to flow back to the evaporation end under gravity, thus facilitating heat transfer and circulation. The wicking elements can be either metal mesh or sintered metal. The metal mesh type involves attaching a metal mesh of a certain mesh size to the inner wall of the first tube and the outer wall of the dotted groove. The sintered metal type includes powder sintering and fiber sintering. By incorporating wicking elements, the heat transfer rate and coolant circulation are improved, further enhancing heat dissipation efficiency.

[0048] like Figure 6 As shown, heat dissipation fins are provided on the outer wall of the upper plate 2, and the heat dissipation fins are fixedly connected to the upper plate 2. The heat dissipation fins include a first zigzag fin 8 and a second zigzag fin 9. The first zigzag fin 8 and the second zigzag fin 9 are arranged alternately in the transverse direction of the upper plate, and are fixedly connected. The crests of the first zigzag fin 8 and the second zigzag fin 9 are staggered. Both the first zigzag fin 8 and the second zigzag fin 9 extend longitudinally along the upper plate 2. When the heat dissipation fins contact the upper plate 2, they can transfer heat from the upper plate 2 to dissipate heat, thereby improving the heat dissipation effect. The staggered arrangement of the crests of the first zigzag fin 8 and the second zigzag fin 9 creates a gap between them, allowing air to flow through the gap and improving the heat dissipation effect of the heat dissipation fins.

[0049] A method for preparing a multi-cavity heat exchanger with unequal thickness, characterized by comprising the following steps:

[0050] S1. Select a planar substrate and divide the planar substrate into an upper sheet area, a bending area and a lower sheet area. The upper sheet area and the lower sheet area have the same size. Roll a rib in the middle of the upper sheet area to roll an upper protrusion strip that is set along the longitudinal direction of the upper sheet. Roll a rib in the middle of the lower sheet area to roll a lower protrusion strip that is set along the longitudinal direction of the lower sheet.

[0051] S2. After the rolling and pressing of the ribs is completed, the side of the upper sheet area away from the bending area is rolled along the longitudinal direction of the upper sheet to roll out an upper connecting part with an arc. The upper connecting part is bent towards the side of the upward protrusion. The side of the lower sheet area away from the bending area is rolled along the longitudinal direction of the lower sheet to roll out a lower connecting part with an arc. The lower connecting part is bent towards the side of the downward protrusion. Then the middle part of the bending area is rolled to bring the upper connecting part and the lower connecting part closer to each other to form a U-shaped material. The upper connecting part and the lower connecting part are welded to form an O-shaped tube.

[0052] S3. Roll the two opposite sides of the O-ring until the corresponding upper and lower convex strips contact each other. At this time, the O-ring becomes an elliptical tube. Cut the elliptical tube to form tube segments. Clean the tube segments and check for leaks.

[0053] S4. Weld the contact point between the upper and lower convex strips in the pipe section, then punch one end of the pipe section to make the upper and lower sides of the end in close contact, and weld the contact part to form a semi-sealed pipe section. Introduce liquid into the open end of the semi-sealed pipe section for water testing. After the water testing, evacuate the semi-sealed pipe section from the open end and inject coolant.

[0054] S5. Stamp and weld the open end of the semi-sealed pipe section to seal both ends of the pipe section, forming a heat spreader. Select heat dissipation fins and attach them tightly to one outer wall of the heat spreader. Weld the heat dissipation fins at the contact point with the heat spreader to fix the heat dissipation fins to the outer wall of the heat spreader.

[0055] The above-mentioned preparation process is simple, improves preparation efficiency, and reduces process costs. This process can produce a heat dissipation plate with better heat dissipation performance.

[0056] This utility model underwent a comparative experiment under the following conditions:

[0057] Under the same external dimensions (120mm×26mm, T=2mm), compared with aluminum plate, O-tube without internal support, and harmonica tube with internal column support, using the same heat source, heat source conditions: size (10mm×10mm), heat flow (50w), no cooling conditions, and instantaneous performance for two seconds, the following table is obtained:

[0058] Table 1

[0059]

[0060] In Table 1, Comparative Example 1 is an aluminum plate, Comparative Example 2 is an O-ring, Comparative Example 3 is a harmonica tube, and Example 1 is the heat spreader of this utility model. As can be seen from Table 1, compared to Comparative Examples 1-3, the heat spreader of this application exhibits a significant decrease in heat source temperature, a remarkable heat dissipation effect, and is also lighter and has better heat dissipation performance. Simulation cloud diagrams are shown below. Figure 7-10 As shown.

[0061] Example 2

[0062] like Figure 11As shown, this utility model provides a multi-cavity heat exchanger with unequal thickness. Unlike Embodiment 1, in this embodiment, the heat dissipation fins include a third zigzag fin group. This third zigzag fin group comprises multiple third zigzag fins 10 arranged sequentially along the longitudinal direction of the upper plate. These multiple third zigzag fins 10 are connected in sequence, and the crests of the third zigzag fins 10 are arranged in a wavy pattern along the transverse direction of the upper plate. The wavy heat dissipation fins increase the space for airflow, allowing the air to carry away more heat from the heat dissipation fins, thereby improving the heat dissipation effect.

[0063] Example 3

[0064] like Figure 12 As shown, this utility model provides a multi-cavity heat exchanger with unequal thickness. Unlike Embodiment 1, in this embodiment, the heat dissipation fins include a fourth zigzag fin group. This fourth zigzag fin group comprises multiple fourth zigzag fins 11 arranged sequentially along the transverse direction of the upper plate. These multiple fourth zigzag fins 11 are connected sequentially, and the crests of the fourth zigzag fins 11 are arranged in a straight line along the longitudinal direction of the upper plate. The straight-line heat dissipation fins improve heat dissipation efficiency while being simple to manufacture, easy to produce, and improving production efficiency.

[0065] Under the same external dimensions (120mm×26mm, T=2mm), comparing the aluminum plate and heat sink fin combination, the O-tube and heat sink fin combination without internal support, and the harmonica tube and heat sink fin combination with internal columnar support, using the same heat source, heat source conditions: size (10mm×10mm), heat flow (50w), no cooling conditions, and instantaneous performance over two seconds, the following table is obtained:

[0066] Table 2

[0067]

[0068] In Table 2, Comparative Example 1 is a combination of an aluminum plate and heat dissipation fins, Comparative Example 2 is a combination of an O-tube and heat dissipation fins, Comparative Example 3 is a combination of a harmonica tube and heat dissipation fins, and Example 1 is a combination of the heat spreader and heat dissipation fins of this utility model. As can be seen from Table 2, compared to Comparative Examples 1-3, the combination of the heat spreader and heat dissipation fins in this application significantly reduces the heat source temperature, has a significant heat dissipation effect, is lighter, and has better heat dissipation performance. Simulation cloud diagrams are shown below. Figure 13-16 As shown.

[0069] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A non-uniform thick multi-cavity tube type vapor chamber, characterized by, The application relates to a heat-conducting pipe body internally provided with cooling liquid, one end of the heat-conducting pipe body is provided with a first sealing part which is integrated with the heat-conducting pipe body, and the other end of the heat-conducting pipe body is provided with a second sealing part which is integrated with the heat-conducting pipe body. The heat-conducting pipe body comprises an upper sheet body and a lower sheet body, the inner side of the middle part of the upper sheet body is provided with an upper protruding strip which extends to both ends along the longitudinal direction of the upper sheet body, the inner side of the middle part of the lower sheet body is provided with a lower protruding strip which extends to both ends along the longitudinal direction of the lower sheet body, and the upper protruding strip is fixedly connected with the lower protruding strip.

2. The non-uniform thick multi-channel tube vapor chamber of claim 1, wherein: The transverse dimensions of the upper protruding strip and the lower protruding strip gradually decrease from the bottom to the top, the top end surfaces of the upper protruding strip and the lower protruding strip are arranged in a plane, and the top of the upper protruding strip is fixedly connected with the top of the lower protruding strip.

3. The non-uniform thick multi-channel tube vapor chamber of claim 1, wherein: The application further comprises a liquid absorbing core which is fixedly arranged on the inner side wall of the upper sheet body, the outer side wall of the upper protruding strip and the outer side wall of the lower protruding strip.

4. The non-uniform thick multi-channel tube vapor chamber of claim 1, wherein: The outer side wall of the upper sheet body is provided with a heat dissipation fin which is fixedly connected with the upper sheet body.

5. The non-uniform thick multi-channel tube vapor chamber of claim 4, wherein: The heat dissipation fin comprises first and second fold line type fins which are alternately arranged along the transverse direction of the upper sheet body, the first and second fold line type fins are fixedly connected, the wave crests of the first and second fold line type fins are arranged in a staggered mode, and the first and second fold line type fins extend along the longitudinal direction of the upper sheet body.

6. The non-uniform thick multi-channel tube vapor chamber of claim 5, wherein: The cross sections of the first and second fold line type fins are square waves.

7. The non-uniform thick multi-channel tube vapor chamber of claim 4, wherein: The heat dissipation fin comprises a third fold line type fin group which comprises a plurality of third fold line type fins arranged along the longitudinal direction of the upper sheet body, the plurality of third fold line type fins are sequentially integrated, and the wave crests of the third fold line type fins are arranged in a wave mode along the transverse direction of the upper sheet body.

8. The non-uniform thick multi-channel tube vapor chamber of claim 4, wherein: The heat dissipation fin comprises a fourth fold line type fin group which comprises a plurality of fourth fold line type fins arranged along the transverse direction of the upper sheet body, the plurality of fourth fold line type fins are sequentially integrated, and the wave crests of the fourth fold line type fins are arranged in a straight line mode along the longitudinal direction of the upper sheet body.

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