Vapor chamber and electronic equipment
By introducing a flexible plate into the heat spreader to form a connected cavity system, the problem of existing heat spreaders being unable to be folded is solved, achieving heat dissipation and space utilization that are suitable for foldable electronic devices.
Patent Information
- Application Number
- CN202520313576.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-02-26
AI Technical Summary
Existing heat spreaders cannot be folded and are not compatible with foldable electronic devices.
Design a heat spreader comprising a first plate, a second plate, and a flexible plate. The flexible plate is connected to the first and second plates to form a connected cavity system. The refrigerant flows between the cavities to achieve heat spreader. The flexible plate allows the entire heat spreader to be folded.
The heat spreader is foldable, making it suitable for foldable electronic devices, improving heat dissipation and saving space in the thickness direction.
Smart Images
Figure CN223928671U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of electronic equipment technology, specifically relating to a heat spreader and an electronic device. Background Technology
[0002] In related technologies, heat spreaders are typically plate-shaped structures made of metal with internal heat dissipation channels. Their structure and materials prevent heat spreaders from being repeatedly folded, thus making them unsuitable for foldable electronic devices. Utility Model Content
[0003] The purpose of this application is to provide a heat spreader and an electronic device that can effectively solve the technical problem that heat spreaders cannot be folded in related technologies.
[0004] In a first aspect, embodiments of this application provide a heat spreader, comprising:
[0005] The first plate has a first cavity inside it;
[0006] The second plate has a second cavity inside it;
[0007] The flexible plate is connected to both the first plate and the second plate. The flexible plate has a third cavity, which is connected to both the first cavity and the second cavity.
[0008] Secondly, embodiments of this application provide an electronic device, including:
[0009] A first frame and a second frame, connected by a hinge; and
[0010] As provided in the first aspect embodiment, the heat spreader has a first plate body disposed on a first frame, a second plate body disposed on a second frame, and the flexible plate body and the hinge of the heat spreader are disposed opposite to each other.
[0011] In this embodiment, the heat spreader includes a first plate, a second plate, and a flexible plate. The flexible plate is connected to the first plate and also to the second plate. The first plate has a first cavity, the second plate has a second cavity, and the flexible plate has a third cavity. The third cavity is connected to the first cavity and also to the second cavity, so that the refrigerant can flow between the first cavity, the third cavity, and the second cavity to achieve a uniform heat spreader effect.
[0012] Furthermore, the addition of the flexible plate allows the entire heat spreader to be bent, thus adapting to foldable electronic devices. Attached Figure Description
[0013] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0014] Figure 1 A schematic diagram of a heat spreader provided in one embodiment of this application is shown;
[0015] Figure 2 As shown Figure 1 The image shows a cross-sectional view of the heat spreader along line AA.
[0016] Figure 3 A cross-sectional view of a heat spreader provided in one embodiment of this application is shown;
[0017] Figure 4 A schematic diagram of a partial structure of a heat spreader provided in one embodiment of this application is shown;
[0018] Figure 5 A schematic diagram of a partial structure of a heat spreader provided in one embodiment of this application is shown;
[0019] Figure 6 A schematic diagram of a partial structure of a heat spreader provided in one embodiment of this application is shown;
[0020] Figure 7 A schematic diagram of the heat exchange principle of the first and second channels of a heat exchange plate provided in one embodiment of this application is shown;
[0021] Figure 8 A cross-sectional view of a heat spreader provided in one embodiment of this application is shown;
[0022] Figure 9 A schematic diagram of an electronic device provided in one embodiment of this application is shown;
[0023] Figure 10 A schematic diagram of a partial structure of an electronic device provided in one embodiment of this application is shown;
[0024] Figure 11 A schematic diagram of a partial structure of an electronic device provided in one embodiment of this application is shown;
[0025] Figure 12 A schematic diagram of an island fiber fabric is shown;
[0026] Figure 13 Schematic diagrams of fixed-island fiber cross-sections and non-fixed-island fiber cross-sections are shown.
[0027] Figures 1 to 11 Figure label:
[0028] 100 Heat sink, 110 First plate, 112 First cavity, 120 Second plate, 122 Second cavity, 130 Flexible plate, 132 Third cavity, 134 First housing, 136 Second housing, 140 Capillary, 142 First end, 144 Second end, 146 First channel, 148 Second channel, 150 Support, 152 First through hole, 160 First weld, 162 Second weld, 164 Third weld, 166 Fourth weld, 168 First seal, 170 Second seal, 172 Edge sealant, 200 Electronic device, 210 First frame, 220 Second frame, 230 Hinge, 240 Screen. Detailed Implementation
[0029] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0030] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.
[0031] In the description of this application, it should be understood that the terms "upper" and "inner", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0032] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0033] The following is combined Figures 1 to 13Describes a heat spreader 100 and an electronic device 200 according to embodiments of this application.
[0034] Firstly, such as Figure 1 , Figure 2 and Figure 3 As shown, this application embodiment provides a heat spreader 100, including: a first plate 110, the first plate 110 having a first cavity 112; a second plate 120, the second plate 120 having a second cavity 122; a flexible plate 130, connected to both the first plate 110 and the second plate 120, the flexible plate 130 having a third cavity 132, the third cavity 132 being connected to both the first cavity 112 and the second cavity 122.
[0035] In this embodiment, the heat spreader 100 includes a first plate 110, a second plate 120, and a flexible plate 130. The flexible plate 130 is connected to the first plate 110 and is also connected to the second plate 120. The first plate 110 has a first cavity 112, the second plate 120 has a second cavity 122, and the flexible plate 130 has a third cavity 132. The third cavity 132 is connected to the first cavity 112 and is also connected to the second cavity 122. Thus, the refrigerant can flow between the first cavity 112, the third cavity 132, and the second cavity 122, thereby achieving a heat spreader effect.
[0036] Furthermore, the addition of the flexible plate 130 allows the entire heat spreader 100 to be bent, thus adapting to foldable electronic devices 200.
[0037] Specifically, refrigerant is filled into the first cavity 112, the second cavity 122 and the third cavity 132, so that the flow of refrigerant can realize the transfer of heat, thereby achieving the purpose of uniform heat dissipation.
[0038] The first plate 110 can be installed in the first frame 210 of the electronic device 200, and the second plate 120 can be installed in the second frame 220 of the electronic device 200. Furthermore, the first plate 110 and the second plate 120 can be designed as a battery compartment. Compared to a battery compartment design using graphite sheets and metal materials, this design saves more space in the thickness direction, allowing this space to be reserved for batteries and other hardware configurations, thus improving the internal layout space of the electronic device 200. In other words, by adapting the flexible plate 130 to the hinge 230 of the electronic device 200, the heat dissipation plate 100 becomes bendable, allowing it to better adapt to foldable electronic devices 200 and improving the heat dissipation effect of foldable electronic devices 200.
[0039] Figure 3 The arrows in the diagram indicate the direction of refrigerant flow.
[0040] like Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, in one possible implementation, the heat spreader 100 further includes a capillary tube 140, which is fixed in the third cavity 132, with the first end 142 of the capillary tube 140 extending into the first cavity 112 and the second end 144 of the capillary tube 140 extending into the second cavity 122.
[0041] Specifically, the heat spreader 100 also includes a capillary tube 140. That is, the heat spreader 100 includes a first plate 110, a second plate 120, a flexible plate 130, and a capillary tube 140. The flexible plate 130 is connected to the first plate 110 and the second plate 120. The capillary tube 140 is fixed in the third cavity 132 of the flexible plate 130. The first end 142 of the capillary tube 140 extends into the first cavity 112 of the first plate 110, and the second end 144 of the capillary tube 140 extends into the second cavity 122 of the second plate 120. Thus, two channels are formed inside and outside the capillary tube 140. That is, the two channels are the first channel 146 inside the capillary tube 140 and the second channel 148 between the capillary tube 140 and the flexible plate 130.
[0042] After the heat spreader 100 is filled with refrigerant, one of the first chamber 112 and the second chamber 122 is used for evaporation, and the other is used for condensation. Taking the first chamber 112 as the evaporation chamber and the second chamber 122 as the condensation chamber as an example, the liquid refrigerant condensed in the second chamber 122 is guided into the first chamber 112 through the capillary action of the capillary tube 140 and the first channel 146 inside the capillary tube 140. The liquid refrigerant absorbs heat from the heat source in the first chamber 112 and evaporates to form gaseous refrigerant. The gaseous refrigerant enters the second chamber 122 through the second channel 148 outside the capillary tube 140 and condenses to form liquid refrigerant in the second chamber 122. This allows the refrigerant to circulate within the first chamber 110 and the second chamber 120, achieving a continuous heat dissipation effect. Moreover, its heat dissipation effect is greater than that of the graphite sheet.
[0043] The capillary tube 140 can extend into the first cavity 112 and the second cavity 122. For example... Figure 7As shown, the capillary tube 140 has a first channel 146 inside and a second channel 148 outside, enabling heat exchange between the evaporation section and the condensation section. Specifically, the liquid refrigerant absorbs heat in the evaporation section, transforming into a gaseous refrigerant, which then enters the condensation section through the second channel 148 outside the capillary tube 140. The gaseous refrigerant releases heat in the condensation section, transforming back into a liquid refrigerant. The first channel 146 inside the capillary tube 140 transports the liquid refrigerant to the evaporation section through capillary action. Due to the size of the first channel 146 and the capillary action, gaseous refrigerant from the evaporation section will not enter the first channel 146 inside the capillary tube 140, thus ensuring the continuous operation of the entire heat exchange process. The evaporation section corresponds to one of the first cavity 112 and the second cavity 122 in this application, and the condensation section corresponds to the other of the first cavity 112 and the second cavity 122 in this application. The refrigerant absorbs heat in the evaporation section.
[0044] Figure 7 The arrows in the diagram indicate the direction of refrigerant flow.
[0045] like Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, in one possible implementation, the heat spreader 100 further includes: a support member 150 disposed on the flexible plate 130 and located in the third cavity 132, and a capillary tube 140 passing through the support member 150; wherein the support member 150 extends in the first direction BC, the capillary tube 140 extends in the second direction DE, and the included angle between the first direction BC and the second direction DE is greater than 0° and less than or equal to 90°.
[0046] Specifically, the heat spreader 100 also includes a support member 150 disposed within the flexible plate body 130. That is, the third cavity 132 has a support member 150, through which the capillary tube 140 passes, thereby fixing and supporting the capillary tube 140, reducing the possibility of damage or displacement of the capillary tube 140 due to bending, and thus improving the service life of the heat spreader 100. The support member 150 can be strip-shaped, and its cross-section can be polygonal, circular, elliptical, or irregular, etc.
[0047] The support member 150 and the capillary tube 140 can be injection molded into an integral structure. The support member 150 can be made of thermoplastic polyurethane (TPU) or other plastic or rubber materials. The support member 150 and the capillary tube 140 are injection molded together, so that the capillary tube 140 runs through the entire flexible plate 130, ensuring that the capillary tube 140 plays a capillary role in the heat spreader 100. The support member 150 limits, fixes and supports the capillary tube 140, reducing the excessive deformation of the capillary tube 140. At the same time, it can support the hinge 230 of the electronic device 200, preventing the hinge 230 from collapsing and affecting the crease of the screen 240 and the touch screen experience, improving the support effect of the heat spreader 100 on the hinge 230, and improving the crease of the screen 240.
[0048] Furthermore, the capillary tube 140 can extend into the first cavity 112 and the second cavity 122. The depth of the capillary tube 140 can be adjusted according to specific circumstances. For example, for the evaporation section, the capillary tube 140 can be set to correspond to the heat source. Of course, the specific position of the end of the capillary tube 140 can also be set in other positions.
[0049] A second channel 148 is formed between the support member 150 and the flexible plate 130, or the support member 150 is provided with a through hole to form the second channel 148, so as to facilitate the flow of gaseous refrigerant.
[0050] like Figure 1 and Figure 4 As shown, when the flexible plate 130 is in the unfolded state, as Figure 1 and Figure 5 As shown, the flexible plate 130 is in a bent state. In both states, due to the support of the support member 150, neither the capillary tube 140 nor the shell will collapse, thus ensuring that the refrigerant can transfer heat inside and outside the capillary tube 140. That is, the liquid refrigerant condensed in the condensing section is led to the evaporating section through the capillary tube 140 by capillary action. After the liquid refrigerant evaporates in the evaporating section to form gaseous refrigerant, it migrates to the condensing section through the gap between the support member 150 and the sealing adhesive 172 of the flexible plate 130 (the phenomenon of hot gas transport), thereby achieving the function of heat equalization.
[0051] The support member 150 extends in the first direction BC, and the capillary tube 140 extends in the second direction DE. The angle between the first direction BC and the second direction DE is greater than 0° and less than or equal to 90°. That is, the extension directions of the support member 150 and the capillary tube 140 are different, thereby ensuring that the capillary tube 140 can follow the bending of the flexible plate 130 and reducing the influence of the support member 150 on the bending of the flexible plate 130.
[0052] like Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, in one possible implementation, the number of support members 150 is at least two, and the at least two support members 150 are arranged at intervals along the first direction BC; the number of capillary tubes 140 is at least two, and the at least two capillary tubes 140 are arranged at intervals along the second direction DE.
[0053] Specifically, there are at least two capillary tubes 140 to increase the amount of refrigerant guided by capillary action, ensuring the heat exchange effect of the heat spreader 100. At least two capillary tubes 140 pass through the support member 150 at intervals to ensure the reliability of the capillary tubes 140.
[0054] The number of support members 150 is at least two, to ensure the support and fixation effect of the support members 150 on the capillary 140. The at least two support members 150 are arranged at intervals to accommodate the bending of the flexible plate 130.
[0055] At least two support members 150 are arranged at intervals along the first direction BC, and at least two capillary tubes 140 are arranged at intervals along the second direction DE, thereby ensuring that the support members 150 can fix the capillary tubes 140 and that the flexible plate 130 can be bent normally.
[0056] Specifically, the second direction DE is perpendicular to the first direction BC, thereby reducing the influence of the support member 150 on the bending of the capillary 140 and ensuring the bending effect of the flexible plate 130.
[0057] As one possible implementation method, such as Figure 8 As shown, the support member 150 has a first through hole 152, which is open along the second direction DE; or as... Figure 3 , Figure 4 and Figure 5 As shown, the two ends of the support member 150 are spaced apart from the cavity wall of the third cavity 132.
[0058] Specifically, such as Figure 8 As shown, the support member 150 has a first through hole 152, which is open along the second direction DE, so that the gaseous refrigerant can pass through the flexible plate 130 through the first through hole 152, realizing the flow of refrigerant between the first plate 110 and the second plate 120. Figure 8 The arrows in the diagram indicate the direction of refrigerant flow.
[0059] Or such as Figure 3 , Figure 4 and Figure 5As shown, the two ends of the support member 150 are spaced apart from the cavity wall of the third cavity 132, so that the gaseous refrigerant can pass through the flexible plate 130 between the support member 150 and the cavity wall of the third cavity 132, realizing the flow of refrigerant between the first plate 110 and the second plate 120.
[0060] As one possible implementation, capillary 140 is a fixed island fiber capillary.
[0061] Specifically, the capillary 140 is a fixed island fiber capillary. Fixed island fiber materials have good flexibility and can adapt to repeated bending. In addition, the fixed island fiber capillary has a small diameter, which reduces the impact of the capillary 140 on the thickness of the flexible plate 130.
[0062] Among them, such as Figure 12 and Figure 13 As shown, island-island fibers are made by dispersing one polymer in another, with the dispersed phase in the fiber cross-section in an "island" state, while the parent phase is equivalent to a "sea" state. Fixed island-island fibers use soluble materials to form the "islands," and after dissolving the "islands," hollow fibers are obtained. Unfixed island fibers use soluble materials to form the "sea," and after dissolving the "sea," extremely fine fibers are obtained. This application uses fixed island-island fibers to manufacture capillary 140, giving capillary 140 excellent flexibility and an extremely fine diameter, thereby adapting to bending and reducing the impact on the thickness of the flexible plate 130.
[0063] The fixed island fiber capillary tube 140 can fully meet the requirements of bending life and improve the service life of the heat spreader plate 100.
[0064] Of course, in other embodiments of this application, the capillary 140 may also be a composite material capillary, a plastic capillary, or a metal capillary, etc.
[0065] like Figure 2 As shown, in one possible implementation, the flexible plate 130 is clamped on the first plate 110 and the second plate 120, and the flexible plate 130 is connected to the first plate 110 and the second plate 120 by welding.
[0066] Specifically, the flexible plate 130 is sandwiched between the first plate 110 and the second plate 120. The flexible plate 130 is connected to the first plate 110 and the second plate 120 by welding, thereby improving the connection strength and sealing performance of the first plate 110, the second plate 120 and the flexible plate 130.
[0067] The flexible plate 130 includes: a first shell 134; a second shell 136 disposed on one side of the first shell 134; the first shell 134 and the second shell 136 are connected to form a third cavity 132; and the capillary tube 140 and the support member 150 are located between the first shell 134 and the second shell 136.
[0068] That is, the flexible plate 130 includes a first shell 134 and a second shell 136. The first shell 134 and the second shell 136 are fastened together to form a third cavity 132, which encloses the capillary 140 and the support member 150. This arrangement can reduce the production difficulty and production cost of the flexible plate 130.
[0069] The edges of the first housing 134 and the second housing 136 are sealed with edge sealant 172 to facilitate sealing of the first housing 134 and the second housing 136. Optionally, the first plate 110 and the second plate 120 are also assembled from at least two parts and sealed with edge sealant 172. In addition, the split design can reduce the manufacturing cost of the heat spreader 100.
[0070] like Figure 2 As shown, in one possible implementation, a first weld 160 is formed between the end of the flexible plate 130 and the surface of the first plate 110; a second weld 162 is formed between the end of the first plate 110 and the surface of the flexible plate 130; a first seal 168 is filled between the first weld 160 and the second weld 162; a third weld 164 is formed between the end of the flexible plate 130 and the surface of the second plate 120; a fourth weld 166 is formed between the end of the second plate 120 and the surface of the flexible plate 130; and a second seal 170 is filled between the third weld 164 and the fourth weld 166.
[0071] Specifically, a first weld 160 is formed between the end of the flexible plate 130 and the surface of the first plate 110, and a second weld 162 is formed between the end of the first plate 110 and the surface of the flexible plate 130. That is, there are two welds between the flexible plate 130 and the first plate 110, thereby improving the connection strength between the flexible plate 130 and the first plate 110. Furthermore, a first seal 168 is filled between the first weld 160 and the second weld 162 to improve the sealing performance between the flexible plate 130 and the first plate 110 and reduce the possibility of refrigerant leakage.
[0072] A third weld 164 is formed at the end of the flexible plate 130 and on the surface of the second plate 120, and a fourth weld 166 is formed between the end of the second plate 120 and the surface of the flexible plate 130. That is, there are two welds between the flexible plate 130 and the second plate 120, thereby improving the connection strength between the flexible plate 130 and the second plate 120. Furthermore, a second seal 170 is filled between the third weld 164 and the fourth weld 166 to improve the sealing performance between the flexible plate 130 and the second plate 120.
[0073] Among them, such as Figure 2 As shown, the flexible plate 130 includes a first shell 134 and a second shell 136. The first shell 134 and the second shell 136 are sandwiched on the first plate 110 and the second plate 120, and the first shell 134 and the second shell 136 are welded to the first plate 110 and the second plate 120.
[0074] Specifically, the first housing 134 and the second housing 136 are located on both sides of the first plate 110, thereby clamping the first plate 110. The end of the first housing 134 is welded to the outer surface of the first plate 110 to form a first welded part 160, and the end of the first plate 110 is welded to the inner surface of the first housing 134 to form a second welded part 162, thereby ensuring the connection strength between the first housing 134 and the first plate 110.
[0075] A first seal 168 is filled between the first housing 134, the first plate 110, the first welded part 160, and the second welded part 162.
[0076] The end of the second housing 136 is welded to the outer surface of the first plate 110 to form a first welded part 160, and the end of the first plate 110 is welded to the inner surface of the second housing 136 to form a second welded part 162, thereby ensuring the connection strength between the second housing 136 and the first plate 110.
[0077] A first seal 168 is filled between the second housing 136, the first plate 110, the first welded part 160, and the second welded part 162.
[0078] The first housing 134 and the second housing 136 are located on both sides of the second plate 120, thereby clamping the second plate 120. The end of the first housing 134 and the outer surface of the second plate 120 are welded together to form a third welded part 164. The end of the second plate 120 and the inner surface of the first housing 134 are welded together to form a fourth welded part 166, thereby ensuring the connection strength between the first housing 134 and the second plate 120.
[0079] A second seal 170 is filled between the first housing 134, the second plate 120, the third welded part 164, and the fourth welded part 166.
[0080] The end of the second housing 136 is welded to the outer surface of the second plate 120 to form a third welded part 164, and the end of the second plate 120 is welded to the inner surface of the second housing 136 to form a fourth welded part 166, thereby ensuring the connection strength between the second housing 136 and the second plate 120.
[0081] A second seal 170 is filled between the second housing 136, the second plate 120, the third welded part 164, and the fourth welded part 166.
[0082] In other words, the flexible plate 130 is connected, fixed and sealed to the first plate 110 and the second plate 120 through processes such as overlapping, welding and gluing.
[0083] like Figure 2 As shown, in one possible implementation, the outer sides of the first welding part 160, the second welding part 162, the third welding part 164 and the fourth welding part 166 are arc-shaped.
[0084] Specifically, the outer sides of the first welded part 160, the second welded part 162, the third welded part 164, and the fourth welded part 166 are arc-shaped, thereby reducing the possibility of the first welded part 160, the second welded part 162, the third welded part 164, and the fourth welded part 166 being scratched by other objects, and reducing the squeezing and scratching of the first welded part 160, the second welded part 162, the third welded part 164, and the fourth welded part 166 on other parts.
[0085] Secondly, such as Figure 9 As shown, this application provides an electronic device 200, including: a first frame 210 and a second frame 220, the first frame 210 and the second frame 220 being connected by a hinge 230; and a heat spreader 100 as provided in the first aspect embodiment, the first plate 110 of the heat spreader 100 being disposed on the first frame 210, the second plate 120 of the heat spreader 100 being disposed on the second frame 220, and the flexible plate 130 of the heat spreader 100 and the hinge 230 being disposed opposite to each other.
[0086] In this embodiment, the electronic device 200 includes a first frame 210, a second frame 220, a hinge 230, and a heat spreader 100 as provided in the first aspect embodiment. The first frame 210 and the second frame 220 are connected by the hinge 230. The heat spreader 100 is disposed on the first frame 210, the second frame 220, and the hinge 230. Specifically, a first plate 110 of the heat spreader 100 is disposed on the first frame 210, and a second plate 120 of the heat spreader 100 is disposed on the second frame 220. On the 0, the flexible plate 130 and the hinge 230 are opposite each other, so that the flexible plate 130 can adapt to the bending of the hinge 230. The heat dissipation plate 100 realizes heat dissipation and heat dissipation between the first frame 210 and the second frame 220, thereby improving the heat dissipation effect of the electronic device 200. Furthermore, since the electronic device 200 provided in this application includes the heat dissipation plate 100 as provided in the first aspect embodiment, it has all the beneficial effects of the heat dissipation plate 100 as provided in the first aspect embodiment, which will not be described in detail here.
[0087] Optionally, such as Figure 10 As shown, the heat spreader 100 can be fixed to the screen 240, or, as... Figure 11 As shown, the heat spreader 100 can be fixed to the first frame 210, the hinge 230, and the second frame 220.
[0088] Electronic device 200 can be a terminal or other devices besides electronic device 200. For example, electronic device 200 can be a mobile phone, tablet computer, laptop computer, handheld computer, e-book, music playback device, private network communication terminal equipment (such as walkie-talkie), mobile internet device (MID), augmented reality / virtual reality / mixed reality device, robot, wearable device, ultra-mobile personal computer (UMPC), netbook, or personal digital assistant (PDA), etc. The embodiments of this application do not specifically limit it.
[0089] In the description of this specification, references to terms such as "an embodiment" or "specific embodiment" indicate that a particular feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0090] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.
Claims
1. A heat spreader, characterized in that, include: A first plate, wherein the first plate has a first cavity; The second plate has a second cavity inside it; A flexible plate is connected to both the first plate and the second plate. The flexible plate has a third cavity, which is connected to both the first cavity and the second cavity.
2. The heat spreader according to claim 1, characterized in that, Also includes: A capillary tube is fixed in the third cavity, with its first end extending into the first cavity and its second end extending into the second cavity.
3. The heat spreader according to claim 2, characterized in that, Also includes: A support member is disposed on the flexible plate and located within the third cavity, and the capillary tube passes through the support member; The support extends in a first direction, and the capillary extends in a second direction, with the angle between the first direction and the second direction being greater than 0° and less than or equal to 90°.
4. The heat spreader according to claim 3, characterized in that, The number of the support members is at least two, and the at least two support members are arranged at intervals along the first direction; The number of capillaries is at least two, and the at least two capillaries are arranged at intervals along the second direction.
5. The heat spreader according to claim 3, characterized in that, The support member has a first through hole, which is open along the second direction; or The two ends of the support member are spaced apart from the cavity wall of the third cavity.
6. The heat spreader according to claim 2, characterized in that, The capillary is a fixed island fiber capillary.
7. The heat spreader according to any one of claims 1 to 6, characterized in that, The flexible plate is sandwiched between the first plate and the second plate, and the flexible plate is connected to both the first plate and the second plate by welding.
8. The heat spreader according to claim 7, characterized in that, The end of the flexible plate and the surface of the first plate form a first welded part; A second welded portion is formed between the end of the first plate and the surface of the flexible plate; A first sealant is filled between the first welded portion and the second welded portion; The end of the flexible plate and the surface of the second plate form a third welded part; The end of the second plate and the surface of the flexible plate form a fourth welded part; A second sealant is filled between the third weld and the fourth weld.
9. The heat spreader according to claim 8, characterized in that, The outer sides of the first welded part, the second welded part, the third welded part, and the fourth welded part are arc-shaped.
10. An electronic device, characterized in that, include: A first frame and a second frame are connected by a hinge; as well as The heat spreader as described in any one of claims 1 to 9, wherein the first plate body of the heat spreader is disposed on the first frame, the second plate body of the heat spreader is disposed on the second frame, and the flexible plate body of the heat spreader and the hinge are disposed opposite to each other.