Flexible vapor chamber

Abstract

The invention relates to the technical field of heat dissipation, and provides a flexible vapor chamber which comprises two shells and a capillary structure, a cavity is formed between the two shells, and working fluid and the capillary structure fixed through a supporting column are arranged in the cavity; a flexible part and two extension parts on two sides of the flexible part are formed on the shell along the first direction, and the flexible part respectively extends to two opposite sides of the shell along the second direction, so that the shell can be bent along the third direction; the cavity comprises a first space and two second spaces, the first space corresponds to the flexible part, and the second spaces correspond to the extension parts; the capillary structure comprises a plurality of first guiding pieces, the first guiding pieces are arranged in the first space at intervals in the second direction and are wound in the second direction and the third direction respectively to form a spiral body structure extending to the second space in the first direction, and therefore the working fluid is guided to flow. The spiral body structure of the guide piece improves the bending resistance strength of the vapor chamber, and prevents the vapor chamber from being broken due to the fatigue phenomenon.

Description

Technical Field

[0001] The present invention relates to the field of heat dissipation technology, and in particular to a flexible temperature equalizing plate. Background Art

[0002] As computer computing power increases, temperature control of various processors and other electronic components becomes increasingly important. As the computing speed of working chips in electronic devices continues to increase, the ambient temperature in the system also gradually increases, thereby reducing the stability of the system. To this end, the industry places a temperature plate in contact with the working chip so that the heat energy of the working chip can be discharged out of the system through the temperature plate to achieve heat dissipation of the electronic device and maintain the stability of the electronic device.

[0003] For foldable electronic devices, the temperature equalizer made of hard materials cannot match the flexural deformation of the foldable parts, so a flexible temperature equalizer is used instead. Existing flexible temperature equalizers usually include a substrate and a cover plate connected to each other, a chamber is formed between the substrate and the cover plate, and a working fluid and a capillary structure are arranged inside the chamber. The working fluid is used to absorb and release heat energy. The capillary structure is mainly composed of a plurality of metal wires or a metal mesh formed by interweaving a plurality of metal wires, which is used to guide the flow direction of the working fluid, so that the working fluid undergoes phase change when absorbing and releasing heat, and can quickly absorb a large amount of heat energy, and quickly disperse the heat energy to form a uniform temperature.

[0004] Since foldable electronic devices are folded repeatedly during use, the capillary structure on the flexible temperature equalizer needs to bend repeatedly to match the folding operation of the electronic device. As the number of bends increases, fatigue occurs easily in the capillary structure, eventually causing the flexible temperature equalizer to break. Summary of the invention

[0005] In view of the fact that the capillary structure of the above-mentioned conventional flexible temperature equalizing plate is prone to fatigue after repeated bending, which eventually leads to the problem of breakage of the flexible temperature equalizing plate, one of the objects of the present application is to provide a flexible temperature equalizing plate. The method solves the above-mentioned problem by winding in a second direction and a third direction to form a guide member with a spiral structure extending along the first direction to enhance the bending strength of the capillary structure.

[0006] To achieve the above objectives, this application adopts the following technical solutions: The flexible heat spreader includes two shells and a capillary structure; The shells are both plate-shaped structures, and the two shells are correspondingly covered in the third direction and form a sealing structure located between the edges of the two shells on all sides; a chamber for accommodating a working fluid for absorbing and releasing heat energy is formed between the sealing structure and the shells; The capillary structure is arranged in the chamber, and a plurality of support columns vertically penetrating the capillary structure are arranged in the chamber, and two ends of the support columns are respectively connected to the two shells; in, The two shells are respectively formed with a flexible portion and two extension portions along the first direction, the flexible portion is located between the two extension portions, the flexible portion is respectively extended to opposite sides of the shell in the second direction, and the flexible portion is recessed toward a side close to the chamber in the third direction, so that its thickness is less than the thickness of the two extension portions adjacent thereto; The chamber is divided into a first space in the middle and second spaces on both sides of the first space, the first space is located between the corresponding flexible portions on the two shells in the third direction, and the two second spaces are respectively located between the corresponding extension portions on the two shells in the third direction; The capillary structure includes a plurality of first guides, which are arranged in the first space at intervals along the second direction, and the first guides are respectively wound in the second direction and the third direction to form a spiral structure extending to the two second spaces along the first direction, so as to guide the working fluid to flow between the first space and the second space along the first direction; The distribution density of the support columns in the first space is smaller than that in the second space.

[0007] Optionally, the first guide member is formed by twisting one or more soft first wires, and winding in the second direction and the third direction respectively to form a spiral structure extending along the first direction.

[0008] Optionally, the radial cross-section of the first wire body is circular or rectangular.

[0009] Optionally, the first wire body is recessed at a circumferential side in a radial direction to form a first channel, and the first channel penetrates the first wire body in an axial direction.

[0010] Optionally, the first guide member further includes a plurality of wire harnesses, each of which is formed by twisting a plurality of soft second wire bodies; both ends of the wire harnesses extend along the first direction, and each of the wire harnesses is correspondingly wound with the first wire body.

[0011] Optionally, the capillary structure further includes a plurality of first warp threads, both ends of which extend along the second direction respectively and are spaced apart along the first direction; the first warp threads and the first guide members are interlaced vertically and horizontally in the third direction to form a woven mesh. Optionally, the capillary structure further includes a plurality of second guides and a plurality of second warps, the second guides and the first warps are both located in two second spaces, and each of the second spaces is provided with a plurality of second guides and a plurality of first warps; The second guide member meanders in the second direction and the third direction respectively to form a spiral structure extending along the first direction, thereby guiding the working fluid to flow between the first space and the second space along the first direction; Each of the second guide members is located between two of the first guide members, and the two first guide members and the second guide member therebetween form a guide group, and the guide groups are arranged at intervals along the second direction; the first warp threads are respectively interlaced with the first guide members and the second guide members in the third direction to form a woven mesh; The second warp threads are arranged in a row and spaced apart in the first space. The second warp threads extend along the second direction, and each second warp thread is interlaced with two adjacent first guide members in the second direction in a third direction to form a partial woven mesh.

[0012] Optionally, a plurality of the first guide members adjacent to each other in the second direction form a cluster.

[0013] Optionally, the capillary structure further includes two mesh parts, which are formed by crisscrossing and weaving multiple third wires to form a grid-like mesh, and the two mesh parts are respectively arranged in two second spaces; and the two ends of the first guide member forming a cluster are respectively connected to the two mesh parts.

[0014] Optionally, a surface of the flexible portion in the third direction away from the chamber is a flat surface or a concave-convex surface.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. A guide member having a spiral structure extending along the first direction is formed by winding in the second direction and the third direction respectively, so that the capillary structure can have good bending strength in the second direction and the third direction while cooperating with the bending of the flexible part. Compared with the existing capillary structure, the spiral structure of the guide member makes it less likely for the capillary structure to break due to fatigue, thereby meeting the need to cooperate with repeated folding of electronic equipment.

[0016] 2. The number and distribution of guides in the flexible part can be determined according to actual usage requirements, so that the flexible temperature equalizer has different degrees of anti-bending strength to meet various usage requirements; in addition, in order to provide sufficient distribution space for the guides in the flexible part and prevent the bending of the flexible part from being affected, the distribution density of the support columns in the first space is less than the distribution density of the support columns in the second space.

[0017] 3. The guide components have various structures and different bending strengths. They can be selected according to actual use requirements to meet various use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a three-dimensional exploded view of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 3 It is a partial cross-sectional view along the length direction of the first embodiment of the present invention; Figure 4 A top view of a capillary structure according to a first embodiment of the present invention; Figure 5 is a schematic diagram of the interlacing of the first warp and the first guide member in the first embodiment of the present invention; Figure 6 It is a partial three-dimensional schematic diagram of the first guide member in the first embodiment of the present invention; Figure 7 It is a partial three-dimensional schematic diagram of the first guide member in the second embodiment of the present invention; Figure 8 is a radial cross-sectional view of the first line body in the third embodiment of the present invention; Fig. 9 is a radial cross-sectional view of the first line body in the fourth embodiment of the present invention; Fig.10 is a radial cross-sectional view of the first linear body in Embodiment 5 of the present invention; Fig.11 It is a partial three-dimensional schematic diagram of the first guide member in the sixth embodiment of the present invention; Fig.12 It is a partial three-dimensional schematic diagram of the first guide member in the seventh embodiment of the present invention; Fig.13 It is a partial three-dimensional schematic diagram of the first guide member in the eighth embodiment of the present invention; Fig.14 It is a partial three-dimensional schematic diagram of the first guide member in Embodiment 9 of the present invention; Fig.15 is a schematic diagram of a radial cross section of a first guide member in Embodiment 10 of the present invention; Fig.16 It is a partial three-dimensional schematic diagram of the first guide member in the eleventh embodiment of the present invention; Fig.17 is a top view of the capillary structure in the twelfth embodiment of the present invention; Fig.18 is a top view of the capillary structure in the thirteenth embodiment of the present invention; Fig.19 is a top view of the capillary structure in Embodiment 14 of the present invention; Fig. 20 is a top view of the capillary structure in the fifteenth embodiment of the present invention; Fig.21 It is a partial cross-sectional view along the length direction of the sixteenth embodiment of the present invention; Fig. 22 It is a partial cross-sectional view along the length direction of the seventeenth embodiment of the present invention; Fig.23 It is a partial cross-sectional view along the length direction of the eighteenth embodiment of the present invention.

[0020] Reference numerals: 10. housing; 11. flexible portion; 12. extension portion; 14. first metal film; 15. polymer film; 16. second metal film; 20. capillary structure; 21. first guide; 211. first channel; 212. first line; 213. second channel; 214. wire bundle; 2142. second line; 22. first warp; 23. second guide; 24. second warp; 25. mesh portion; 252. third line; 30. Edge sealing structure; 40. chamber; 42. first space; 44. second space; 50. Support column; 92, first direction; 94, second direction; 96, third direction. DETAILED DESCRIPTION

[0021] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0022] In the description of the present invention, it should be understood that the terms "length", "width", "thickness", "up", "down", "inside", "outside", "axial", "radial" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships conventionally placed when the product of the present invention is used, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "connected", "connection" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0026] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0027] In addition, in this article, as attached Figure 1 As shown in the direction indicators in FIG. 9 , the length direction of the housing 10 is referred to as a first direction 92 , the width direction is referred to as a second direction 94 , and the thickness direction is referred to as a third direction 96 .

[0028] The following is a detailed description of the embodiments of the flexible temperature equalizing plate provided by the present invention in conjunction with the accompanying drawings.

[0029] Embodiment 1, as Figures 1 to 6 As shown: The flexible temperature equalizing plate includes two shells 10 and a capillary structure 20; The shell 10 is a plate-shaped structure. The two shells 10 are correspondingly covered in the third direction 96 and form a sealing structure 30 between the edges of the two shells 10. A chamber 40 for accommodating a working fluid for absorbing and releasing heat energy is formed between the sealing structure 30 and the shell 10. The capillary structure 20 is disposed in the chamber 40 to guide the flow direction of the working fluid so that the working fluid undergoes phase change when absorbing and releasing heat, thereby rapidly and massively absorbing heat energy and rapidly dispersing the heat energy to form a uniform temperature. The chamber 40 is provided with a plurality of support columns 50 vertically penetrating the capillary structure 20, and the two ends of the support columns 50 are respectively connected to the two shells 10; The two shells 10 respectively form a flexible portion 11 and two extension portions 12 along the first direction 92, the flexible portion 11 is located between the two extension portions 12, and the flexible portion 11 extends to opposite sides of the shell 10 in the second direction 94. The flexible portion 11 is recessed toward the side close to the chamber 40 in the third direction 96, so that its thickness is less than the thickness of the two extension portions 12 adjacent thereto, so that the shell 10 can bend along the third direction 96; specifically, the side of the flexible portion 11 away from the chamber 40 in the third direction 96 is a plane; The chamber 40 is divided into a first space 42 in the middle and second spaces 44 on both sides of the first space 42. The first space 42 is located between the corresponding flexible portions 11 on the two shells 10 in the third direction 96, and the two second spaces 44 are located between the corresponding extension portions 12 on the two shells 10 in the third direction 96. The capillary structure 20 includes a plurality of first guide members 21, which are arranged in the first space 42 at intervals along the second direction 94 and meander in the second direction 94 and the third direction 96, respectively, to form a three-dimensional spiral spring structure extending along the first direction 92 to the two second spaces 44, thereby guiding the working fluid to flow between the first space 42 and the second space 44 along the first direction 92; The distribution density of the support columns 50 in the first space 42 is lower than that in the second space 44 .

[0030] Specifically, the shell 10 is a layered structure consisting of a first metal film 14, a flexible polymer film 15 and a second metal film 16; the polymer film 15 is located between the first metal film 14 and the second metal film 16, the first metal film 14 is located on the side of the shell 10 close to the chamber 40 in the third direction 96, and the second metal film 16 is located on the side of the shell 10 away from the chamber 40 in the third direction 96; the groove 13 is formed on the second metal film 16.

[0031] In addition, if Figure 6 As shown, the first guide member 21 is a spiral body formed by a soft first wire body 212 made of metal material or fiber material. The first wire body 212 winds around in the second direction 94 and the third direction 96 to form a three-dimensional spiral spring structure extending along the first direction 92 to the two second spaces 44, and the radial cross-section of the first wire body 212 is circular.

[0032] The capillary structure 20 further includes a plurality of first meridians 22, both ends of which extend along the second direction 94 and are spaced apart along the first direction 92; Figure 5 As shown, the first warp threads 22 and the first guide members 21 are interlaced in the third direction 96 to form a woven mesh, so that the capillary structure 20 forms a mesh structure.

[0033] By winding in the second direction 94 and the third direction 96 respectively, the first guide member 21 of the three-dimensional spiral spring structure is formed, so that the capillary structure 20 can have good bending strength in the second direction 94 and the third direction 96 while cooperating with the bending of the flexible part 11. Compared with the existing capillary structure, this three-dimensional spiral structure makes it less likely for the first guide member 21 to produce fatigue and cause the temperature equalizing plate to break; the first guide member 21 and the first warp 22 are interlaced vertically and horizontally to form a woven mesh, which enhances the bending strength of the capillary structure 20 and meets the requirements of repeated folding of electronic equipment.

[0034] The difference between the second embodiment and the first embodiment is that Figure 7 As shown, the radial cross section of the first wire body 212 is a rectangle.

[0035] Embodiment 3, embodiment 4 and embodiment 5 are respectively as follows Figure 8-10 As shown, the differences between the third embodiment, the fourth embodiment and the fifth embodiment compared with the first embodiment are that the first wire body 212 is recessed in the radial direction to form a first channel 211, and the first channel 211 penetrates the first wire body 212 in the axial direction, so that the working fluid can flow in the first channel 211; wherein, Figure 8 and Fig. 9Schematic diagram of the first wire body 212 with a rectangular radial cross section being concave on the circumferential side in the radial direction, Fig.10 Schematic diagram of the first wire body 212 having a circular radial cross section and being concave on the circumferential side in the radial direction.

[0036] Embodiment 6 and embodiment 7 are respectively as follows Figure 11-12 As shown, the difference between the sixth and seventh embodiments compared with the first embodiment is that the first guide member 21 further includes a plurality of wire harnesses 214, each of which is twisted by a plurality of soft second wire bodies 2142; both ends of the wire harness 214 extend along the first direction 92, and each of the wire harnesses 214 is correspondingly wound with the first wire body 212; wherein, Fig.11 2 is a schematic diagram of the first wire body 212 and the wire harness 214 being intertwined to form the first guide member 21. Fig.12 It is a schematic diagram of the first wire body 212 and the wire harness 214 having a rectangular radial cross section being intertwined to form the first guide member 21 .

[0037] Specifically, the second wire body 2142 is yarn.

[0038] Embodiment 8 and embodiment 9 are respectively as follows Figure 13-14 As shown, the difference between the eighth and ninth embodiments compared with the first embodiment is that the first guide member 21 is formed by spiraling a plurality of first wire bodies 212 made of metal material or fiber material, so that the first guide member 21 winds around in the second direction 94 and the third direction 96 respectively to form a spiral structure extending along the first direction 92. The first guide member 21 can have good bending strength in both the second direction 94 and the third direction 96 under the premise of cooperating with the bending of the flexible portion 11, so that the capillary structure 20 is not prone to fatigue and cause the temperature absorbing plate to break, thereby meeting the requirement of cooperating with the repeated folding of the electronic device. Compared with the first embodiment, the structure of the first guide member 21 in the eighth and ninth embodiments has better bending strength. Fig.13 It is a partial schematic diagram of the first guide member 21 formed by two first wire bodies 212 having a circular radial cross section spirally rotating; Fig.14 It is a partial schematic diagram of the first guide member 21 formed by spirally twisting two first wire bodies 212 with a rectangular radial cross section.

[0039] Embodiment ten, as Fig.15 As shown, the tenth embodiment is different from the eighth embodiment in that the first guide member 21 further includes a wire harness 214 as illustrated in the sixth embodiment, and the first wire body 212 constituting the first guide member 21 is recessed in the radial direction to form a second channel 213, and the second channel 213 penetrates the first wire body 212 in the axial direction, so that the working fluid can flow in the second channel 213; Fig.15This is a partial schematic diagram of the first guide 21 in which the first wire body 212 and the wire harness 214 are wound around the first wire body 212 and the wire harness 214 to form the second channel 213 in the radial direction.

[0040] Embodiment eleven, as Fig.16 As shown, the eleventh embodiment is different from the eighth embodiment in that the first guide member 21 further includes a wire harness 214 as illustrated in the sixth embodiment, each of the wire harnesses 214 is twisted by a plurality of soft second wire bodies 2142; both ends of the wire harness 214 extend along the first direction 92, and each of the wire harnesses 214 is correspondingly wound with a first wire body 212; Fig.15 A partial schematic diagram of a first guide member 21 formed by combining a first wire body 212 and a wire harness 214 that are wound around a plurality of knobs.

[0041] Embodiment 12, as Fig.17 As shown, the twelfth embodiment is different from the first embodiment in that the capillary structure 20 further includes a plurality of second guide members 23 and a plurality of second warp threads 24. The second guide members 23 and the first warp threads 22 are both located in two second spaces 44. Each of the second spaces 44 is provided with a plurality of the second guide members 23 and a plurality of the first warp threads 22. Specifically, the second guide member 23 has the same structure as the first guide member 21 illustrated in the first embodiment, and is a spring structure that winds in the second direction 94 and the third direction 96 to form a three-dimensional spiral extending along the first direction 92, thereby guiding the working fluid to flow between the first space 42 and the second space 44 along the first direction 92; Each of the second guide members 23 is located between two of the first guide members 21, and the two first guide members 21 and the second guide member 23 therebetween form a guide group, and the guide group is arranged along the second direction 94 with the second guide members 23 spaced apart; the first warp threads 22 are respectively interlaced with the first guide members 21 and the second guide members 23 in the third direction 96 to form a woven mesh; The second warp threads 24 are arranged in a row and spaced apart in the first space 42 . The second warp threads 24 extend along the second direction 94 . Each second warp thread 24 intersects with two adjacent first guide members 21 in the second direction 94 in the third direction 96 to form a partial woven mesh.

[0042] Embodiment 13, as Fig.18 As shown, the thirteenth embodiment is different from the first embodiment in that a plurality of adjacent first guide members 21 in the second direction 94 form a cluster, and the thirteenth embodiment does not have the first warp line 22 illustrated in the first embodiment.

[0043] Embodiment 14, as Fig.19As shown, the fourteenth embodiment is different from the thirteenth embodiment in that the capillary structure 20 also includes two mesh portions 25, which are formed by criss-crossing and weaving a plurality of third wires 252 to form a grid-like mesh, and the two mesh portions 25 are respectively arranged in two second spaces 44; the two ends of the first guide member 21 formed in a cluster extend from the first space 42 into the second space 44, and are respectively connected to the two mesh portions 25.

[0044] Embodiment 15, as Fig. 20 As shown, the fifteenth embodiment is different from the thirteenth embodiment in that the capillary structure 20 includes a plurality of first warp threads 22 as illustrated in the first embodiment, and the first guide member 21 is formed in a bundle and interlaced with the first warp threads 22 in the third direction 96 to form a local woven mesh.

[0045] Embodiment 16, as Fig.21 As shown, the sixteenth embodiment is different from the first embodiment in that the housing 10 is integrally formed of a metal material.

[0046] Embodiment 17, as Fig. 22 As shown, the seventeenth embodiment is different from the first embodiment in that a surface of the flexible portion 11 away from the chamber 40 in the third direction 96 is a concave-convex surface with a square waveform in cross section, so that the thickness of part of the flexible portion 11 is smaller than the thickness of the two adjacent extension portions 12.

[0047] Embodiment 18, as Fig.23 As shown, the eighteenth embodiment is different from the seventeenth embodiment in that a surface of the flexible portion 11 away from the chamber 40 in the third direction 96 is a wavy concave-convex surface in cross section, so that the thickness of part of the flexible portion 11 is smaller than the thickness of the two adjacent extension portions 12.

[0048] In the above embodiments, the first guide member 21 in Embodiments 12 to 15 can be replaced by any one of the structures of the first guide member 21 illustrated in Embodiments 2 to 11; the second guide member 23 in Embodiment 12 can also be replaced by any one of the structures of the first guide member 21 illustrated in Embodiments 2 to 11.

[0049] The layered shell 10 in Examples 1 to 15 may be replaced by a structure integrally formed of a metal material as exemplified in Example 16, or one of the shells 10 may be a layered structure consisting of a first metal film 14, a polymer film 15, and a second metal film 16, and the other shell 10 may be a structure integrally formed of a metal material. It may also be replaced by a structure in which the flexible portion 11 illustrated in Example 17 or Example 18 has a concave-convex surface on one side away from the chamber 40 in the third direction 96.

[0050] The aforementioned various replacement options are all simple replacement options that can be easily thought of by those skilled in the art based on the technical contents disclosed in each embodiment, and will not be described in detail below.

[0051] It should be noted that, in order to easily identify the structural composition of the capillary structure 20 , the working fluid is not shown in the drawings.

[0052] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A flexible heat spreader, comprising two shells and a capillary structure, characterized in that: The shells are both plate-shaped structures, and the two shells are correspondingly covered in the third direction and form a sealing structure located between the edges of the two shells on all sides; a chamber for accommodating a working fluid for absorbing and releasing heat energy is formed between the sealing structure and the shells; The capillary structure is arranged in the chamber, and a plurality of support columns vertically penetrating the capillary structure are arranged in the chamber, and two ends of the support columns are respectively connected to the two shells; in, The two shells are respectively formed with a flexible portion and two extension portions along the first direction, the flexible portion is located between the two extension portions, the flexible portion is respectively extended to opposite sides of the shell in the second direction, and the flexible portion is recessed toward a side close to the chamber in the third direction, so that its thickness is less than the thickness of the two extension portions adjacent thereto; The chamber is divided into a first space in the middle and second spaces on both sides of the first space, the first space is located between the corresponding flexible portions on the two shells in the third direction, and the two second spaces are respectively located between the corresponding extension portions on the two shells in the third direction; The capillary structure includes a plurality of first guides, which are arranged in the first space at intervals along the second direction, and the first guides are respectively wound in the second direction and the third direction to form a spiral structure extending to the two second spaces along the first direction, so as to guide the working fluid to flow between the first space and the second space along the first direction; The distribution density of the support columns in the first space is smaller than that in the second space.

2. The flexible temperature equalizer according to claim 1, characterized in that: The first guide member is formed by twisting one or more soft first wires, and winding in the second direction and the third direction respectively to form a spiral structure extending along the first direction.

3. The flexible temperature equalizing plate according to claim 2, characterized in that: The radial cross section of the first wire body is circular or rectangular.

4. The flexible temperature equalizer according to claim 2, wherein: The circumferential side of the first wire body is recessed in the radial direction to form a first channel, and the first channel penetrates the first wire body in the axial direction.

5. The flexible temperature equalizer according to any one of claims 2 to 4, characterized in that: The first guide member further includes a plurality of wire harnesses, each of which is formed by twisting a plurality of soft second wire bodies; two ends of the wire harnesses extend along a first direction, and each of the wire harnesses is correspondingly wound with the first wire body.

6. The flexible temperature equalizer according to claim 5, characterized in that: The capillary structure further includes a plurality of first warp threads, both ends of which extend along the second direction respectively and are spaced apart along the first direction; the first warp threads and the first guide members are interlaced vertically and horizontally in the third direction to form a woven mesh.

7. The flexible temperature equalizing plate according to claim 6, characterized in that: The capillary structure further comprises a plurality of second guides and a plurality of second warps, wherein the second guides and the first warps are both located in two second spaces, and each of the second spaces is provided with a plurality of second guides and a plurality of first warps; The second guide member meanders in the second direction and the third direction respectively to form a spiral structure extending along the first direction, thereby guiding the working fluid to flow between the first space and the second space along the first direction; Each of the second guide members is located between two of the first guide members, and the two first guide members and the second guide member therebetween form a guide group, and the guide groups are arranged at intervals along the second direction; the first warp threads are respectively interlaced with the first guide members and the second guide members in the third direction to form a woven mesh; The second warp threads are arranged in a row and spaced apart in the first space. The second warp threads extend along the second direction, and each second warp thread is interlaced with two adjacent first guide members in the second direction in a third direction to form a partial woven mesh.

8. The flexible temperature equalizer according to claim 5, characterized in that: A plurality of the first guides adjacent to each other in the second direction form a cluster.

9. The flexible temperature equalizing plate according to claim 8, characterized in that: The capillary structure also includes two mesh parts, which are formed by crisscrossing and weaving multiple third wires to form a grid-like mesh. The two mesh parts are respectively arranged in two second spaces; the two ends of the first guide member forming a cluster are respectively connected to the two mesh parts.

10. The flexible temperature equalizer according to claim 1, wherein: A surface of the flexible portion away from the chamber in the third direction is a flat surface or a concave-convex surface.

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