Multi-cavity folded rib pipe type vapor chamber and preparation method thereof

Abstract

The invention discloses a multi-cavity folding rib pipe type temperature equalizing plate and a preparation method thereof.The temperature equalizing plate comprises a temperature equalizing pipe body, a first sealing part is arranged at one end of the temperature equalizing pipe body, a second sealing part is arranged at the other end of the temperature equalizing pipe body, the temperature equalizing pipe body comprises an upper pipe body and a lower pipe body, the upper pipe body and the lower pipe body are connected into a whole, and a folding rib is arranged in the middle of the upper pipe body; the folding ribs extend towards the two ends along the axis of the upper pipe body, and the bottoms of the folding ribs are fixedly connected with the inner side of the lower pipe body. The folding ribs are rolled on the upper surface of the uniform-temperature plate, the bottoms of the folding ribs are in contact connection with the inner side of the lower portion of the uniform-temperature plate, the supporting effect is achieved, the two opposite inner side walls of the folding ribs are tightly attached, and therefore the supporting strength is doubled, the overall installation strength and use strength of the uniform-temperature plate are greatly improved, and the service life of the uniform-temperature plate is prolonged. The width size of the vapor chamber can be expanded, the vapor chamber can be applied to a wider heat receiving source, the strength of the vapor chamber cannot be reduced due to size expansion, the overall strength is guaranteed, and the heat dissipation effect is also guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of temperature equalizing plate preparation, and in particular to a multi-cavity folded rib tubular temperature equalizing plate and a preparation method thereof. Background Art

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

[0003] At present, liquid cooling technology includes direct cooling and indirect cooling. Direct cooling is to fill the chassis with insulating liquid such as fluorinated liquid to directly contact the electronic chip to dissipate heat. This method is limited by the insulating liquid, is costly and difficult to maintain, and is rarely used in the market. Indirect cooling is to set up a liquid flow channel inside the liquid cooling plate. The fluid conducts heat through the contact between the liquid cooling plate and the electronic chip. Since direct contact between the fluid and the electronic chip is avoided, indirect cooling is more popular in existing liquid cooling technologies. However, the process of opening a liquid flow channel in the liquid cooling plate is relatively complicated, the cost is high, and the heat dissipation efficiency cannot be well guaranteed. The liquid cooling plate is easily deformed by pressure during installation and use, which seriously affects the overall heat dissipation performance. In order to ensure a certain installation strength of the liquid cooling plate, the width of the liquid cooling plate cannot be expanded. Therefore, the liquid cooling plate with a small width cannot be used on large chips. In order to solve the above problems, the prior art improves the installation strength of the liquid cooling plate by separately setting a supporting structure in the cavity of the liquid cooling plate. The supporting structure is composed of more than two columns, and each column is arranged one by one inside the liquid cooling plate at an interval. Too many columns not only occupy a large amount of internal space, which affects the circulation of the coolant, but also it is difficult to ensure that the thickness of the set columns is consistent with the thickness of the liquid cooling plate, which leads to uneven overall thermal conductivity and unstable thermal conductivity of the liquid cooling plate.

[0004] Therefore, it is necessary to provide a multi-cavity folded rib tubular temperature equalizing plate and a preparation method thereof. Summary of the invention

[0005] The purpose of the present invention is to provide a multi-cavity folded-rib tubular temperature-averaging plate and a preparation method thereof in response to the above-mentioned problems, wherein folded ribs are rolled out on the upper surface of the temperature-averaging plate, and the bottom of the folded ribs are in contact and connected with the lower inner side of the temperature-averaging plate, thereby playing a supporting role, and the two opposite inner walls of the folded ribs are tightly fitted, thereby doubling the supporting strength, greatly improving the overall installation strength and use strength of the temperature-averaging plate, so that the width of the temperature-averaging plate can be expanded and applied to heat sources of wider sizes, and the strength of the temperature-averaging plate will not decrease due to the expansion of the size, thereby ensuring both the overall strength and the heat dissipation effect. The folded ribs are arranged in the middle and do not occupy too much internal space, thereby improving the efficiency of the circulating heat conduction, and the folding process is simple and easy to prepare, thereby improving production efficiency.

[0006] In order to achieve the above-mentioned invention object, the technical solution adopted by the present invention is as follows:

[0007] According to one aspect of the present invention, a multi-cavity folded rib tube type temperature equalizing plate is provided, comprising a temperature equalizing tube body, one end of the temperature equalizing tube body is provided with a first sealing portion, the first sealing portion is connected to the temperature equalizing tube body as a whole, and the other end of the temperature equalizing tube body is provided with a second sealing portion, the second sealing portion is connected to the temperature equalizing tube body as a whole;

[0008] The temperature-equalizing tube body comprises an upper tube body and a lower tube body, wherein the upper tube body is connected as a whole with the lower tube body, a folded rib is arranged in the middle of the upper tube body, and the folded rib extends to both ends along the axis of the upper tube body, and the bottom of the folded rib is fixedly connected to the inner side of the lower tube body.

[0009] Preferably, the folding rib is formed by the upper tube body being recessed inwardly to form a U-shaped portion, and two opposite inner side walls of the U-shaped portion are tightly fitted.

[0010] Preferably, it further comprises a liquid absorbent core, which is fixedly arranged on the inner wall of the upper tube body and the outer wall of the folded rib.

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

[0012] Preferably, the heat dissipation fin includes a first zigzag fin and a second zigzag fin, the first zigzag fin and the second zigzag fin are alternately arranged in sequence along the transverse direction of the upper tube body, the first zigzag fin and the second zigzag fin are fixedly connected, and the crest of the first zigzag fin and the crest of the second zigzag fin are staggered, and the first zigzag fin and the second zigzag fin are both extended along the longitudinal direction of the upper tube body.

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

[0014] Preferably, the heat dissipating fins include a third zigzag fin group, the third zigzag fin group includes a plurality of third zigzag fins arranged in sequence along the longitudinal direction of the upper tube body, the plurality of third zigzag fins are connected in sequence as a whole, and the crests of the third zigzag fins are arranged in a wavy shape along the transverse direction of the upper tube body.

[0015] Preferably, the heat dissipating fins include a fourth zigzag fin group, the fourth zigzag fin group includes a plurality of fourth zigzag fins arranged in sequence along the transverse direction of the upper tube body, the plurality of fourth zigzag fins are connected in sequence, and the crests of the fourth zigzag fins are arranged in a straight line along the longitudinal direction of the upper tube body.

[0016] Preferably, a method for preparing a multi-cavity folded rib tube type temperature equalizing plate comprises the following steps:

[0017] S1. Select a flat substrate, divide the flat substrate into an upper tube area, a bending area and a lower tube area, roll out a U-shaped portion in the middle of the upper tube area, and then squeeze the two opposite outer side walls of the U-shaped portion to gradually reduce the width of the U-shaped portion until the two opposite inner side walls of the U-shaped portion are tightly fitted to form a folded rib;

[0018] S2. After the folding rib is formed, the side of the upper tube area away from the bending area is rolled along the longitudinal direction of the upper tube body to form a first connecting portion with an arc, and the first connecting portion is bent toward the side where the folding rib is recessed. The side of the lower tube area away from the bending area is rolled along the longitudinal direction of the lower tube body to form a second connecting portion with an arc, and the second connecting portion is bent toward the side where the folding rib is recessed. The middle part of the bending area is then rolled to make the first connecting portion and the second connecting portion approach each other to form a U-shaped material. The rolling is continued until the first connecting portion contacts the second connecting portion, and the contact between the first connecting portion and the second connecting portion is welded to form an O-shaped tube body.

[0019] S3, rolling the two opposite sides of the O-shaped tube body until the bottom of the folded rib contacts the lower tube body area, at which time the O-shaped tube body becomes an elliptical tube body, cutting the elliptical tube body to form tube body segments, cleaning the tube body segments, and checking for leaks;

[0020] S4. Weld the contact between the folded rib in the tube body section and the lower tube body area, then punch one end of the tube body section so that the upper and lower sides of the end are in close contact, and weld the contact part to form a semi-sealed tube body section. Liquid is passed through the open end of the semi-sealed tube body section for water testing. After the water testing, vacuum the semi-sealed tube body section from the open end and inject coolant;

[0021] S5. Punch and weld the open end of the semi-sealed pipe body section so that both ends of the pipe body section are sealed to form a temperature equalizing plate.

[0022] Preferably, in step S5, the following steps are also included:

[0023] Select a heat sink fin and place it close to an outer wall of the temperature homogenizing plate;

[0024] Welding is performed at the contact point between the heat dissipation fin and the temperature equalizing plate to fix the heat dissipation fin on the outer wall of the temperature equalizing plate.

[0025] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0026] 1. The present invention rolls out folded ribs on the upper surface of the temperature equalizing plate, and the bottom of the folded ribs is in contact and connected with the inner side of the lower part of the temperature equalizing plate, which plays a supporting role, and the two opposite inner walls of the folded ribs are tightly fitted, thereby doubling the supporting strength, greatly improving the overall installation strength and use strength of the temperature equalizing plate, so that the width of the temperature equalizing plate can be expanded and applied to heat sources of wider sizes, and the strength of the temperature equalizing plate will not decrease due to the expansion of the size, thereby ensuring both the overall strength and the heat dissipation effect.

[0027] 2. The folding ribs of the present invention are arranged in the middle, which does not occupy too much internal space and improves the efficiency of circulating heat conduction.

[0028] 3. The rib folding process of the present invention is simple, easy to prepare, and improves production efficiency.

[0029] 4. After the folded ribs of the present invention are connected to the lower tube body, the internal space of the temperature equalizer is divided into two relatively independent spaces. The temperature equalizer can be applied to two different chips to dissipate heat for the two chips, thereby improving the utilization rate of the temperature equalizer.

[0030] 5. The thickness of the folded ribs of the present invention is consistent with that of the upper tube body and the lower tube body, so that the overall heat conduction of the temperature equalizing plate is uniform and stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0032] Figure 2 is a cross-sectional view of the internal structure of the present invention;

[0033] Figure 3 It is a schematic structural diagram of a cross section of the present invention;

[0034] Figure 4 It is an enlarged schematic diagram of location I of the present invention;

[0035] Figure 5 It is a schematic diagram of the structure of the rib folding and rolling equipment of the present invention;

[0036] Figure 6 It is a structural schematic diagram of the roller device of the present invention;

[0037] Figure 7 is a schematic structural diagram of a welding station of the present invention;

[0038] Figure 8 is a schematic structural diagram of the heat dissipation fin of embodiment 1 of the present invention;

[0039] Figure 9-12 It is the simulation cloud diagram of the comparison 1-3 and the embodiment 1 in the comparative experiment of the present invention;

[0040] Fig.13is a schematic diagram of the heat dissipation fin structure of embodiment 2 of the present invention;

[0041] Fig.14 is a schematic diagram of the heat dissipation fin structure of embodiment 3 of the present invention;

[0042] Figure 15-18 It is a simulation cloud diagram of controls 1-3 and embodiment 1 in the comparative experiment of the present invention.

[0043] In the attached drawings, 1, temperature-averaging tube body; 2, upper tube body; 3, lower tube body; 4, folded ribs; 5, first sealing portion; 6, second sealing portion; 7, first folded-line fin; 8, second folded-line fin; 9, third folded-line fin; 10, fourth folded-line fin. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are only for the purpose of enabling the reader to have a thorough understanding of one or more aspects of the invention, and these aspects of the present invention can be realized even without these specific details.

[0045] See also Figures 1 to 18 The present invention provides a multi-cavity folded rib tubular temperature equalizing plate and a preparation method thereof, and the technical scheme is as follows:

[0046] like Figure 1-4 As shown, a multi-cavity folded rib tube type temperature equalizing plate comprises a temperature equalizing tube body 1, which is formed by bending a sheet and connecting the two sides. The temperature equalizing tube body 1 comprises an upper tube body 2 and a lower tube body 3, and a folded rib 4 is arranged in the middle of the upper tube body 2, and the folded rib 4 is formed by the upper tube body 2 being recessed inward to form a U-shaped portion, and the two opposite inner side walls of the U-shaped portion are tightly fitted, and the folded rib 4 is extended along the axis of the upper tube body 2 to both ends, and the bottom of the folded rib 4 is fixedly connected to the inner side of the lower tube body 3. By providing the folded ribs 4, the installation strength of the upper tube body 2 and the lower tube body 3 is increased, and the two opposite inner walls of the folded ribs 4 are tightly fitted, so that the support strength is doubled, so that the strength of the manufactured temperature equalizing plate will not decrease due to the increase in width. At the same time, the temperature equalizing plate is not easy to deform during installation and use, and the heat dissipation performance is not affected by the deformation of the tube body. Because the folded ribs 4 are provided by rolling, the thickness of the folded ribs 4 can be controlled to be consistent with the thickness of the upper tube body 2, so that the overall thermal conductivity is more uniform and the thermal conductivity rate is easier to control.

[0047] It should be noted that if Figure 5As shown, the folded rib 4 is prepared by a folded rib rolling device. The folded rib rolling device includes a plurality of roller groups arranged in sequence, and each roller group includes two rollers arranged up and down. The starting roller is used to roll out a U-shaped portion with a larger width, and the subsequent rollers are used to gradually reduce the width of the U-shaped portion. The last roller is used to extrude the U-shaped portion so that the two relative inner walls of the U-shaped portion fit tightly. Specifically, when the sheet is placed on the folded rib rolling device, the first roller group is first controlled to roll out a U-shaped portion using the first roller group. The U-shaped portion then passes through the second roller, the third roller, etc. until the two relative inner walls of the U-shaped portion are in contact, and then passes through the last roller to extrude the two relative outer walls of the U-shaped portion so that the two relative inner walls of the U-shaped portion fit tightly, thereby forming a folded rib 4 on the sheet. As shown Figure 6 As shown, after the fold 4 is formed, the sheet is made into a temperature-equalizing tube body by a roller device. Specifically, an upper roller with a gradually decreasing thickness is used to roll the sheet, and a concave roller with a gradually decreasing width is used to gradually tighten the two sides of the sheet from a flat state, and slowly turn it into a U-shaped profile. Finally, the tightening roller is replaced, and the U-shaped profile is continued to be rolled to make the two sides of the U-shaped profile close together, and finally the two sides that are close together are welded by the welding station assembly to form an O-shaped tube body. The welding station assembly is shown in FIG. Figure 7 shown.

[0048] A first sealing portion 5 is provided at one end of the temperature-averaging tube body 1, and the first sealing portion 5 is connected to the temperature-averaging tube body as a whole. A second sealing portion 6 is provided at the other end of the temperature-averaging tube body 1, and the second sealing portion 6 is connected to the temperature-averaging tube body 1 as a whole. Both the first sealing portion 5 and the second sealing portion 6 are formed by stamping at the end of the temperature-averaging tube body 1 by a stamping device. Specifically, the end of the temperature-averaging tube body 1 is placed in the stamping device, and the upper and lower sides of the end of the temperature-averaging tube body 1 are stamped by the stamping device. The end of the upper tube body 2 is bent inwardly to form a first bending portion, and the end of the lower tube body 3 is bent inwardly to form a second bending portion. The upper and lower sides of the end of the temperature-averaging tube body 1 are pressed tightly by stamping, and finally the upper and lower pressed parts are welded by a high-frequency welding station. The same operation is performed on the other end of the temperature-averaging tube body 1 to seal the two ends of the temperature-averaging tube body 1 to form a temperature-averaging plate.

[0049] The cavity of the temperature-averaging board is provided with a cooling liquid, which evaporates after the temperature of the heated end of the temperature-averaging board rises, and the gaseous cooling substance rises to the cold end on the upper side of the temperature-averaging board, and falls back to the hot end after liquefaction, and continuously circulates to achieve the effect of heat dissipation. In the cavity of the temperature-averaging board, the folding rib 4 is equivalent to dividing the cavity into two small cavities, and the two small cavities can perform relatively independent gas-liquid circulation, so that the temperature-averaging board can also be used to dissipate heat and cool different chips at the same time.

[0050] Furthermore, a liquid absorbent core is provided on the inner wall of the upper tube body 2 and the outer wall of the folded rib 4. The liquid absorbent core is based on the capillary effect and the principle of liquid dynamics. When the liquid contacts the surface of the liquid absorbent core, due to the micro-pore structure inside the liquid absorbent core, the liquid is quickly absorbed and diffused along the fiber network, forming a "wicking" phenomenon. This effect allows the liquid to flow back to the evaporation end under the action of gravity, thereby facilitating the transfer and circulation of heat. The liquid absorbent core includes a metal mesh type or a metal sintering type. The metal mesh type is to attach a metal wire mesh of a certain mesh number to the inner wall of the upper tube body 2 and the outer wall of the dotting groove. The metal sintering type includes powder sintering and fiber sintering. By providing a liquid absorbent core, the heat transfer rate and the circulation of the coolant are increased, and the heat dissipation efficiency is further improved.

[0051] like Figure 8 As shown, a heat dissipation fin is arranged on the outer wall of the upper tube body 2, and the heat dissipation fin is fixedly connected to the upper tube body 2. The heat dissipation fin includes a first zigzag fin 7 and a second zigzag fin 8, which are arranged alternately in the transverse direction of the upper tube body 2, the first zigzag fin 7 and the second zigzag fin 8 are fixedly connected, and the wave crest of the first zigzag fin 7 and the wave crest of the second zigzag fin 8 are staggered, and the first zigzag fin 7 and the second zigzag fin 8 are both extended along the longitudinal direction of the upper tube body. The heat dissipation fin is in contact with the upper tube body 2, and the heat of the upper tube body 2 can be transferred to dissipate heat, thereby improving the heat dissipation effect. The wave crest of the first zigzag fin 7 of the heat dissipation fin and the wave crest of the second zigzag fin 8 are staggered, so that the first zigzag fin 7 and the second zigzag fin 8 form a staggered gap, and air can flow through the staggered gap, thereby improving the heat dissipation effect of the heat dissipation fin.

[0052] The present invention also discloses a multi-cavity folded rib tube type temperature equalizing plate and a preparation method thereof, comprising the following steps:

[0053] S1. Select a flat substrate, divide the flat substrate into an upper tube area, a bending area and a lower tube area, roll out a U-shaped portion in the middle of the upper tube area, and then squeeze the two opposite outer side walls of the U-shaped portion to gradually reduce the width of the U-shaped portion until the two opposite inner side walls of the U-shaped portion are tightly fitted to form a folded rib;

[0054] S2. After the folding rib is formed, the side of the upper tube area away from the bending area is rolled along the longitudinal direction of the upper tube body to form a first connecting portion with an arc, and the first connecting portion is bent toward the side where the folding rib is recessed. The side of the lower tube area away from the bending area is rolled along the longitudinal direction of the lower tube body to form a second connecting portion with an arc, and the second connecting portion is bent toward the side where the folding rib is recessed. The middle part of the bending area is then rolled to make the first connecting portion and the second connecting portion approach each other to form a U-shaped material. The rolling is continued until the first connecting portion contacts the second connecting portion, and the contact between the first connecting portion and the second connecting portion is welded to form an O-shaped tube body.

[0055] S3, rolling the two opposite sides of the O-shaped tube body until the bottom of the folded rib contacts the lower tube body area, at which time the O-shaped tube body becomes an elliptical tube body, cutting the elliptical tube body to form tube body segments, cleaning the tube body segments, and checking for leaks;

[0056] S4. Weld the contact between the folded rib in the tube body section and the lower tube body area, then punch one end of the tube body section so that the upper and lower sides of the end are in close contact, and weld the contact part to form a semi-sealed tube body section. Liquid is passed through the open end of the semi-sealed tube body section for water testing. After the water testing, vacuum the semi-sealed tube body section from the open end and inject coolant;

[0057] S5. Punch and weld the open end of the semi-sealed tube section to seal both ends of the tube section to form a temperature-averaging plate. Select a heat sink fin, place the heat sink fin close to an outer wall of the temperature-averaging plate, weld the heat sink fin at the contact point with the temperature-averaging plate, and fix the heat sink fin to the outer wall of the temperature-averaging plate.

[0058] By adopting the above-mentioned preparation process, the process is simple, the preparation efficiency is improved, and the process cost is reduced. Through this process, a temperature homogenizing board with better heat dissipation performance can be prepared.

[0059] The present invention carries out comparative experiment, and the conditions are:

[0060] Under the same outer dimensions (120mm×26mm T=2mm), compared with aluminum plate, O-tube without internal support and harmonica tube with internal columnar support, using the same heat source, heat source conditions: size (10mm×10mm) heat flow (50w), no cooling conditions, two seconds transient performance, the following Table 1 is obtained:

[0061] Table 1

[0062]

[0063] In Table 1, Comparative Example 1 is an aluminum plate, Comparative Example 2 is an O-type tube, Comparative Example 3 is a harmonica tube, and Example 1 is a temperature averaging board of the present invention. As can be seen from Table 1, the temperature averaging board of the present application has a significant drop in heat source temperature and a significant heat dissipation effect compared to Comparative Examples 1-3, and is lighter and has better heat dissipation performance. Figure 9-12 shown.

[0064] Example 2

[0065] like Fig.13As shown, the present invention provides a multi-cavity folded rib tube type temperature equalizing plate and a preparation method thereof. Different from Example 1, in this embodiment, the heat dissipation fins include a third folded line fin group, and the third folded line fin group includes a plurality of third folded line fins 9 arranged in sequence along the longitudinal direction of the upper tube body, and the plurality of third folded line fins 9 are sequentially connected as a whole, and the crests of the third folded line fins 9 are arranged in a wavy shape along the transverse direction of the upper tube body. The wavy heat dissipation fins increase the space for air circulation, so that the air can take away more heat from the heat dissipation fins, thereby improving the heat dissipation effect.

[0066] Example 3

[0067] like Fig.14 As shown, the present invention provides a multi-cavity folded rib tube type temperature equalizing plate and a preparation method thereof. Different from Example 1, in this embodiment, the heat dissipation fins include a fourth folded line fin group, the fourth folded line fin group includes a plurality of fourth folded line fins 10 arranged in sequence along the transverse direction of the upper tube body, the plurality of fourth folded line fins 10 are sequentially connected as one, and the crests of the fourth folded line fins 10 are arranged in a straight line along the longitudinal direction of the upper tube body. The straight-line heat dissipation fins improve the heat dissipation efficiency, are simple to manufacture, and are easy to produce, thereby improving the production efficiency.

[0068] Under the same outer dimensions (120mm×26mm T=2mm), compared with the combination of aluminum plate and heat sink fin, the combination of O-tube and heat sink fin without internal support, and the combination of harmonica tube and heat sink fin with internal columnar support, the same heat source is used, the heat source conditions are: size (10mm×10mm) heat flow (50w), no cooling conditions, two seconds transient performance, and the following Table 2 is obtained:

[0069] Table 2

[0070]

[0071] In Table 2, Control Example 1 is a combination of aluminum plate and heat sink fins, Control Example 2 is a combination of O-tube and heat sink fins, Control Example 3 is a combination of harmonica tube and heat sink fins, and Example 1 is a combination of the temperature averaging plate and heat sink fins of the present invention. It can be seen from Table 2 that the combination of the temperature averaging plate and heat sink fins of the present application has a significant drop in heat source temperature and a significant heat dissipation effect compared to Controls 1-3, and is lighter and has better heat dissipation performance. The simulation cloud diagram is shown in FIG. Figure 15-18 shown.

[0072] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A multi-cavity folded rib tube type temperature equalizing plate, characterized in that: A temperature-averaging tube body is included, wherein a first sealing portion is provided at one end of the temperature-averaging tube body, the first sealing portion is integrally connected to the temperature-averaging tube body, and a second sealing portion is provided at the other end of the temperature-averaging tube body, the second sealing portion is integrally connected to the temperature-averaging tube body; The temperature-equalizing tube body comprises an upper tube body and a lower tube body, wherein the upper tube body is connected as a whole with the lower tube body, a folded rib is arranged in the middle of the upper tube body, and the folded rib extends to both ends along the axis of the upper tube body, and the bottom of the folded rib is fixedly connected to the inner side of the lower tube body.

2. The multi-cavity folded rib tube type temperature equalizing plate according to claim 1, characterized in that: The folding rib is recessed inwardly from the upper tube body to form a U-shaped portion, and two opposite inner side walls of the U-shaped portion are tightly fitted.

3. The multi-cavity folded rib tube type temperature equalizing plate according to claim 1, characterized in that: It also includes a liquid absorbent core, which is fixedly arranged on the inner wall of the upper tube body and the outer wall of the folded rib.

4. The multi-cavity folded rib tube type temperature equalizing plate according to claim 1, characterized in that: The outer side wall of the upper tube body is provided with heat dissipation fins, and the heat dissipation fins are fixedly connected to the upper tube body.

5. The multi-cavity folded rib tube type temperature equalizing plate according to claim 4, characterized in that: The heat dissipation fin includes a first zigzag fin and a second zigzag fin, the first zigzag fin and the second zigzag fin are alternately arranged in sequence along the transverse direction of the upper tube body, the first zigzag fin and the second zigzag fin are fixedly connected, and the wave crest of the first zigzag fin and the wave crest of the second zigzag fin are staggered, and the first zigzag fin and the second zigzag fin are both extended along the longitudinal direction of the upper tube body.

6. The multi-cavity folded rib tube type temperature equalizing plate according to claim 5, characterized in that: The first zigzag fin and the second zigzag fin both have square wave cross sections.

7. The multi-cavity folded rib tube type temperature equalizing plate according to claim 4, characterized in that: The heat dissipation fins include a third zigzag fin group, which includes a plurality of third zigzag fins arranged in sequence along the longitudinal direction of the upper tube body, the plurality of third zigzag fins are connected in sequence, and the crests of the third zigzag fins are arranged in a wave shape along the transverse direction of the upper tube body.

8. The multi-cavity folded rib tube type temperature equalizing plate according to claim 4, characterized in that: The heat dissipation fins include a fourth zigzag fin group, which includes a plurality of fourth zigzag fins arranged in sequence along the transverse direction of the upper tube body, the plurality of fourth zigzag fins are connected in sequence, and the crests of the fourth zigzag fins are arranged in a straight line along the longitudinal direction of the upper tube body.

9. The method for preparing a multi-cavity folded rib tubular temperature equalizing plate according to claim 1, characterized in that: The following steps are involved: S1. Select a flat substrate, divide the flat substrate into an upper tube area, a bending area and a lower tube area, roll out a U-shaped portion in the middle of the upper tube area, and then squeeze the two opposite outer side walls of the U-shaped portion to gradually reduce the width of the U-shaped portion until the two opposite inner side walls of the U-shaped portion are tightly fitted to form a folded rib; S2. After the folding rib is formed, the side of the upper tube area away from the bending area is rolled along the longitudinal direction of the upper tube body to form a first connecting portion with an arc, and the first connecting portion is bent toward the side where the folding rib is recessed. The side of the lower tube area away from the bending area is rolled along the longitudinal direction of the lower tube body to form a second connecting portion with an arc, and the second connecting portion is bent toward the side where the folding rib is recessed. The middle part of the bending area is then rolled to make the first connecting portion and the second connecting portion approach each other to form a U-shaped material. The rolling is continued until the first connecting portion contacts the second connecting portion, and the contact between the first connecting portion and the second connecting portion is welded to form an O-shaped tube body. S3, rolling the two opposite sides of the O-shaped tube body until the bottom of the folded rib contacts the lower tube body area, at which time the O-shaped tube body becomes an elliptical tube body, cutting the elliptical tube body to form tube body segments, cleaning the tube body segments, and checking for leaks; S4. Weld the contact between the folded rib in the tube body section and the lower tube body area, then punch one end of the tube body section so that the upper and lower sides of the end are in close contact, and weld the contact part to form a semi-sealed tube body section. Liquid is passed through the open end of the semi-sealed tube body section for water testing. After the water testing, vacuum the semi-sealed tube body section from the open end and inject coolant; S5. Punch and weld the open end of the semi-sealed pipe body section so that both ends of the pipe body section are sealed to form a temperature equalizing plate.

10. The preparation process of a multi-cavity folded rib tubular temperature equalizing plate according to claim 9, characterized in that: In the step S5, the following steps are also included: Select a heat sink fin and place it close to an outer wall of the temperature homogenizing plate; Welding is performed at the contact point between the heat dissipation fin and the temperature equalizing plate to fix the heat dissipation fin on the outer wall of the temperature equalizing plate.

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