THREE DIMENSIONAL HEAT DISSIPATION DEVICE, MANUFACTURING METHOD THEREOF, AND SHAPING TOOL

A manufacturing method of three dimensional heat dissipation device includes a step of manufacturing a thermally conductive casing, a step of manufacturing a preliminary three dimensional heat dissipation device and a step of manufacturing a final three dimensional heat dissipation device. The step of manufacturing a thermally conductive casing is to manufacture the thermally conductive casing with an airtight chamber. The step of manufacturing a preliminary three dimensional heat dissipation device is to install at least one round heat pipe on the thermally conductive casing to form the preliminary three dimensional heat dissipation device. The step of manufacturing a final three dimensional heat dissipation device is to fix the preliminary three dimensional heat dissipation device and shape the round heat pipe to a flat heat pipe via a shaping tool so as to form the final three dimensional heat dissipation device.

This application claim priority from China Patent App. No. 2024102957196, filed Mar. 14, 2024, the content of which (including all attachments filed therewith) is hereby incorporated by reference in its entirety.

TECHNICAL FIELD

The present disclosure relates to the technical field of heat sinks, and in particular relates to a manufacturing method and shaping mold for a three-dimensional heat dissipation device.

BACKGROUND OF THE DISCLOSURE

Most existing three-dimensional heat dissipation devices are each composed of a thermally conductive casing and a heat pipe. The heat pipe has a round or flat shape. However, when manufacturing a three-dimensional heat dissipation device with a flat heat pipe, all current processing methods are to first shape the round heat pipe into a flat heat pipe and then install the flat heat pipe on the thermally conductive casing. In an actual processing process, it is found that the existing processing methods have at least the following drawbacks:

Therefore, improving the relative stability of product quality while increasing the production capacity of the three-dimensional heat dissipation device with the flat heat pipe is one of the drawbacks that the research and development personnel should solve.

SUMMARY OF THE DISCLOSURE

Exemplary embodiments of the present disclosure provide a manufacturing method and shaping mold for a three-dimensional heat dissipation device, which may but is not required to improve the relative stability of product quality while improving the production capacity of a three-dimensional heat dissipation device with a flat heat pipe.

An example embodiment of the present disclosure provides a manufacturing method for a three-dimensional heat dissipation device, comprising: a thermally conductive casing manufacturing step: manufacturing a thermally conductive casing with an airtight chamber; a preliminary three-dimensional heat dissipation device manufacturing step: installing at least one round heat pipe on the thermally conductive casing to form a preliminary three-dimensional heat dissipation device; and a final three-dimensional heat dissipation device manufacturing step: fixing the preliminary three-dimensional heat dissipation device by means of a shaping mold, and shaping a pipe body of the round heat pipe into a flat heat pipe to obtain a final three-dimensional heat dissipation device.

Another example embodiment of the present disclosure provides a shaping mold, wherein the shaping mold can be used in the above manufacturing method to shape a preliminary three-dimensional heat dissipation device, the preliminary three-dimensional heat dissipation device comprises a thermally conductive casing and a round heat pipe installed on the thermally conductive casing, the preliminary three-dimensional heat dissipation device can be fixed by means of the shaping mold, and a pipe body of the round heat pipe of the preliminary three-dimensional heat dissipation device can be shaped into a flat heat pipe to obtain a final three-dimensional heat dissipation device.

According to exemplary implementations of example disclosed embodiments, in a manufacturing method and shaping mold for the three-dimensional heat dissipation device of for example the above example embodiments, when manufacturing three-dimensional heat dissipation devices with flat heat pipes, round heat pipes can first be installed by using an automation technology, and then subsequent aging and helium inspection tests can be performed on the basis of the round heat pipes. After the tests, the round heat pipes can be uniformly shaped into flat heat pipes. Therefore, while improving the production capacity of the three-dimensional heat dissipation devices with flat heat pipes, the relative stability of product quality can be, but is not required to be, improved.

The above description of the summary of the present disclosure and the following description of the example embodiments are used to illustrate and explain the principles of the present disclosure, and can facilitate further understanding of the appended claims of the present disclosure.

DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS

The matters exemplified in this description are provided to assist in a comprehensive understanding of exemplary embodiments of the disclosure. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the described disclosure. Also, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

Referring to exemplary illustrations of FIGS. 1 and 2, FIG. 1 is a schematic structural diagram of a final three-dimensional heat dissipation device of an example embodiment of the present disclosure, and FIG. 2 is a flowchart of a manufacturing method of an example embodiment of the present disclosure. As shown in FIGS. 1 and 2, the final three-dimensional heat dissipation device 1 according to an example implementation of example embodiments can include a thermally conductive casing 11 and a flat heat pipe 12. In an example implementation, the flat heat pipe 12 can be installed on the thermally conductive casing 11. According to example embodiments, a manufacturing method for a three-dimensional heat dissipation device of the present disclosure can include:

According to exemplary implementations, on this basis, in the example embodiments of the present disclosure, by means of an automated pipe installation technology, the round heat pipe can be installed on the thermally conductive casing 11 to form the preliminary three-dimensional heat dissipation device, and then an aging test and a helium inspection test can be performed. After the tests, the pipe body of the round heat pipe can be shaped into a flat heat pipe 12 to obtain the final three-dimensional heat dissipation device 1, thereby facilitating the avoidance of deformation of the heat pipe during pipe installation and testing, and possibly improving the processing efficiency of the product.

It should be noted that, in an example implementation of above example embodiment, the manufacturing method can further include a test step of performing a temperature difference test on the final three-dimensional heat dissipation device.

Referring to exemplary illustrations of FIGS. 3 to 4 and 7, FIG. 3 is a schematic structural diagram of a thermally conductive casing according to an example embodiment of the present disclosure, FIG. 4 is a detailed flowchart of step S1 in FIG. 2 according to an example implementation of example embodiments of the present disclosure, and FIG. 7 is an overall process flowchart of example embodiments of the present disclosure. As shown in FIGS. 3 and 4, in an example implementation the thermally conductive casing can include a first casing 111 and a second casing 112. The thermally conductive casing manufacturing step S1 according to an example implementation can include:

In an exemplary implementation of disclosed example embodiments, step S11 of forming the first capillary structure and the plurality of supporting structures on the bottom surface of the interior of the first casing can include:

It should be noted that, in an example implementation of above example embodiment, after the first capillary structure 113 is formed by copper mesh spot welding on the bottom surface of the interior of the first casing 111 in step S11, the supporting column 1141 and the third capillary structure 1142 can be formed. However, example embodiments of the present disclosure are not limited to this. In another example embodiment of the present disclosure, the supporting column 1141 and the third capillary structure 1142 may also be formed after step S12.

Referring to exemplary illustrations of FIGS. 5 and 7, FIG. 5 is a detailed flowchart of example implementation of step S2 in example embodiment illustrated in FIG. 2. As shown in FIGS. 5 and 7, according to exemplary implementation of example disclosed embodiments, the preliminary three-dimensional heat dissipation device manufacturing step S2 can include:

In example embodiments of the present disclosure the number of heat pipes does not have to be limited, and the heat pipes can be distributed in an array on the second housing 112.

Further in example embodiments of the present disclosure, step S24 can further include, before filling the working fluid, performing a leak test on the preliminary three-dimensional heat dissipation device.

Still further, in example embodiments of the present disclosure the sealing process in step S24 can include:

Yet still further, in example embodiments of the present disclosure the preliminary three-dimensional heat dissipation device manufacturing step S2 can further include: cleaning the preliminary three-dimensional heat dissipation device after the sealing process, and performing an aging test, a performance test, a surface treatment and a helium inspection test.

It should be noted that, in example embodiment of the present disclosure, after the connection between the first casing 111 and the second casing 112 is welded and sealed by laser welding, the preliminary three-dimensional heat dissipation device can be shaped by means of a computer numerical control machining tool (CNC machining tool) to remove excess parts of the product. After shaping, the preliminary three-dimensional heat dissipation device after the sealing process can be cleaned, and subjected to an aging test, a performance test, a surface treatment and a helium inspection test.

Referring to exemplary illustrations of FIGS. 6 to 7 and 8 to 9, FIG. 6 is a detailed flowchart of an example implementation of step S3 in example embodiment illustrated in FIG. 2, FIG. 8 is a schematic structural diagram of a shaping mold of an example embodiments of the present disclosure, and FIG. 9 is an exploded view of FIG. 8. As shown in exemplary illustrations of FIGS. 6 to 7 and 8 to 9, in an example implementation the shaping mold 2 can includes an upper module member 21, a lower module member 22 and a supporting and limiting assembly 23. According to an example embodiment, the final three-dimensional heat dissipation device manufacturing step S3 can include:

Further, in an example implementation of disclosed example embodiments, the lower module member 22 can include a lower mold plate 221 and at least one shaping insert group 222. In an example implementation, the shaping insert groups 22 can be installed on the lower mold plate 221 at intervals. In an example implementation, each shaping insert group 222 can include two shaping inserts 2221, the two shaping inserts 2221 can be arranged opposite to each other and there can be the shaping region S2 between the two shaping inserts 2221. In an example implementation of disclosed example embodiments, step 31 of installing the preliminary three-dimensional heat dissipation device on the lower module so that at least part of the round heat pipe can be located in the shaping region of the lower module can include: arranging at least part of the round heat pipe in the shaping region S2 between the two shaping inserts 2221.

Still further, in an example implementation of disclosed example embodiments, the supporting and limiting assembly 23 can include at least one supporting and limiting member 231. In an example implementation, the supporting and limiting member can include a transverse portion 2311 and a plurality of vertical portions 2312 arranged at intervals. In an example implementation, one end of each vertical portion 2312 can be connected to the transverse portion 2311. In an example implementation of disclosed example embodiments, step S32 of installing the supporting and limiting assembly on the lower module to fix the shaping region can include:

Still further, in an example implementation of disclosed example embodiments, the upper module member 21 can include an upper mold plate 211 and a plurality of latch inserts 212. In an example implementation, the latch inserts 212 can be installed on the upper mold plate 211. In an example implementation of disclosed example embodiments, step S33 of inserting the upper module into the lower module and squeezing at least part of the round heat pipe located in the shaping region during the insertion process to squeeze at least part of the round heat pipe located in the shaping region into the flat heat pipe to obtain the final three-dimensional heat dissipation device can include:

In an example implementation of disclosed example embodiments, during the insertion process, the insertion length of the latch insert 212 can be limited by the supporting and limiting member 231. In certain example implementations, when the upper mold plate 211 moves downward until it abuts against the transverse portion 2311, the squeezing process ends.

In an example embodiment of the present disclosure, the thickness of the latch insert 212 can be less than or equal to the radius of the round heat pipe.

In an example embodiment of the present disclosure, an end of the latch insert 212 for insertion can be wedge-shaped.

Refer to exemplary illustrations of FIGS. 8 to 9. As shown in FIGS. 8 to 9, an example implementation of disclosed example embodiments further provides a shaping mold. The shaping mold can be used in the above manufacturing method of example disclosed embodiments to shape a preliminary three-dimensional heat dissipation device. According to example implementations, the preliminary three-dimensional heat dissipation device can include a thermally conductive casing and a round heat pipe installed on the thermally conductive casing. According to example implementations, the preliminary three-dimensional heat dissipation device can be fixed by means of the shaping mold 2, and the pipe body of the round heat pipe of the preliminary three-dimensional heat dissipation device can be shaped into a flat heat pipe 12 to obtain a final three-dimensional heat dissipation device.

According to example implementation of disclosed example embodiments, the shaping mold 2 can include an upper module member 21, a lower module member 22 and a supporting and limiting assembly 23. In an example implementation, the preliminary three-dimensional heat dissipation device can be installed on the lower module member 22 so that at least part of the round heat pipe can be located in the shaping region S2 of the lower module member 22. In an example implementation, the supporting and limiting assembly 23 can be installed on the lower module member 21 to fix the shaping region S2. In an example implementation, the upper module member 21 can be used to insert the lower module member 22. According to example implementation of disclosed example embodiments, during the insertion process, at least part of the round heat pipe located in the shaping region S2 can be squeezed to squeeze at least part of the round heat pipe located in the shaping region S2 into a flat heat pipe to obtain the final three-dimensional heat dissipation device.

Further, according to example implementation of disclosed example embodiments, the lower module member can include a lower mold plate 221 and at least one shaping insert group 222. In an example implementation, the shaping insert groups 222 can be installed on the lower mold plate 221 at intervals. In an example implementation, each shaping insert group 222 can include two shaping inserts 2221. In an example implementation, the two shaping inserts 2221 can be arranged opposite to each other, and there can be a shaping region S2 between the two shaping inserts 2221. In an example implementation, at least part of the round heat pipe can be arranged in the shaping region S2 between the two shaping inserts 2221.

In an example implementation of the above disclosed example embodiment, the lower mold plate 221 and the insert groups 222 can be separate structures. In another example embodiment of the present disclosure, the lower mold plate 221 and the insert groups 222 can be an integrated structure.

Still further, according to example implementation of disclosed example embodiments, the supporting and limiting assembly 23 can include at least one supporting and limiting member 231. In an example implementation, the supporting and limiting member can include a transverse portion 2311 and a plurality of vertical portions 2312 arranged at intervals. In an example implementation, one end of each vertical portion 2312 can be connected to the transverse portion 2311, and the other end of the vertical portion 2312 can be inserted into the gap between the shaping insert groups 222 so that it can be located on the outer sides of the shaping insert groups 222 on both sides and abut against the lower mold plate 221. In an example implementation, the transverse portion 2311 can be arranged on the upper surfaces of the shaping inserts 2221.

Still further, according to example implementation of disclosed example embodiments, the upper module member 21 can include an upper mold plate 211 and a plurality of latch inserts 212. In an example implementation, the latch inserts 212 can be installed on the upper mold plate 211. In an example implementation, the upper module member 21 can be inserted into the lower module member 22, and during the insertion process, at least part of the round heat pipe located in the shaping region S2 can be squeezed, so that at least part of the round heat pipe located in the shaping region S2 can be squeezed into a flat heat pipe. In an example implementation, each latch insert 212 can be inserted into a gap between the shaping insert groups 222 in an aligned manner so that it can be located on the outer sides of the shaping insert groups 222 on both sides. According to example implementation of disclosed example embodiments, during the insertion process, two shaping inserts 2221 of each shaping insert group 222 can be squeezed simultaneously by means of the latch insert 212. In an example implementation, the two shaping inserts 2221 move toward each other when being squeezed to squeeze at least part of the round heat pipe, so that at least part of the round heat pipe can be squeezed into a flat heat pipe 12. In an example implementation, during the insertion process, the insertion length of the latch insert 212 can be limited by the supporting and limiting member 231.

In an example implementation of the above disclosed example embodiment, the upper mold plate 211 and the latch inserts 212 can be separate structures. In another example embodiment of the present disclosure, the upper mold plate 211 and the latch inserts 212 can be an integrated structure.

In an example embodiment of the present disclosure, the thickness of the latch inserts 212 can be less than or equal to the radius of the round heat pipe.

In an example embodiment of the present disclosure, an end D of the latch insert 212 for insertion can be wedge-shaped, as shown in FIG. 10.

In summary, on the basis of the example embodiments of the present disclosure, when manufacturing three-dimensional heat dissipation devices with flat heat pipes, round heat pipes can first be installed by using an automation technology, and then subsequent aging and helium inspection tests can be performed on the basis of the round heat pipes. After the tests, the round heat pipes can be uniformly shaped into flat heat pipes. Therefore, while facilitating improvement of the production capacity of the three-dimensional heat dissipation devices with flat heat pipes, the relative stability of product quality can be improved.

The above-presented description and figures are intended by way of example only and are not intended to limit the illustrative embodiments in any way except as set forth in the appended claims. It is particularly noted that various technical aspects of the various elements of the various exemplary embodiments that have been described above can be combined in numerous other ways, all of which are considered to be within the scope of the disclosure.

Accordingly, although the present disclosure has been disclosed as above with reference to the aforementioned example and/or preferred embodiments, such embodiments are not intended to limit the present disclosure. Any person skilled in the art may make some changes and modifications without departing from the spirit and scope of the present disclosure. Therefore, the scope of patent protection of the present disclosure shall be defined by the scope of the claims appended to this description.

The terms and corresponding labels referenced in the disclosure are listed below for convenience. As would be readily appreciated by skilled artisans in the relevant art, while these and other descriptive terms are used throughout this specification to facilitate understanding, it is not intended to limit any components that can be used in combinations or individually to implement various aspects of the embodiments of the present disclosure.