WO2021043309A1 - 均温板及终端设备 - Google Patents

均温板及终端设备 Download PDF

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Publication number
WO2021043309A1
WO2021043309A1 PCT/CN2020/113819 CN2020113819W WO2021043309A1 WO 2021043309 A1 WO2021043309 A1 WO 2021043309A1 CN 2020113819 W CN2020113819 W CN 2020113819W WO 2021043309 A1 WO2021043309 A1 WO 2021043309A1
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WIPO (PCT)
Prior art keywords
capillary structure
cavity
cover plate
plate
uniform temperature
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PCT/CN2020/113819
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English (en)
French (fr)
Inventor
孙永富
施健
杨杰
靳林芳
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华为技术有限公司
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Publication of WO2021043309A1 publication Critical patent/WO2021043309A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
    • F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
    • F28D15/04—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure

Definitions

  • This application relates to the field of heat dissipation, and in particular to a temperature equalizing plate and terminal equipment.
  • Terminal products such as mobile phones, tablets and laptops require light, thin, portable, high performance and good temperature experience, so the heat dissipation performance of products is becoming more and more important.
  • Fig. 1 is a schematic diagram of the structure of an existing uniform temperature plate.
  • the temperature equalization plate includes an upper cover plate 1001, an upper capillary structure 1002 on the upper cover plate 1001, a lower cover plate 1003, and a lower capillary structure 1004 on the lower cover plate 1003.
  • the upper cover plate 1001 and the lower cover plate 1003 are joined together to form a cavity, and the upper capillary structure 1002 and the lower capillary structure 1004 are arranged up and down in the cavity at intervals, and the working fluid is injected, and the upper capillary structure 1002 and the lower capillary structure 1004
  • a steam space 1005 through which steam (in a gaseous working medium) passes is formed in between. After the heat of the heat source is introduced into the uniform temperature plate, the working fluid will absorb the heat and vaporize, and take away a large amount of heat; and the steam flows through the steam space 1005 to the side of the uniform temperature plate away from the heat source, and contacts the lower temperature uniformity plate.
  • the inner wall of the plate After the inner wall of the plate is warmed, it will condense into a liquid state and release heat, and the working fluid that has condensed into a liquid state will return to the heat source through the capillary force of the upper capillary structure 1002 or the lower capillary structure 1004. In this way, the heat conduction is realized continuously.
  • the uniform temperature plate In order to meet the thinning requirements of the end product, the uniform temperature plate also needs to achieve a smaller thickness. However, since the thickness of the uniform temperature plate material has a certain processing limit, it is difficult to further reduce the thickness of the uniform temperature plate, which affects the overall thickness of the end product.
  • the present application provides a uniform temperature plate and terminal equipment, which have a relatively thin thickness.
  • the present application provides a uniform temperature plate, including a first cover plate and a second cover plate.
  • the first cover plate and the second cover plate jointly enclose an accommodating cavity, and the accommodating cavity has a capillary structure and capillary
  • the structure is provided with a first cavity through which steam can pass.
  • the capillary structure inside the uniform temperature plate is set as a whole, and a first cavity is opened inside the capillary structure as a steam channel, so that the working fluid in the gas phase can flow and heat exchange cycle through the first cavity, so
  • the uniform temperature plate no longer needs to increase the space for steam flow in the thickness direction, and the overall thickness of the uniform temperature plate can be reduced, thereby facilitating the overall thinning of the uniform temperature plate and the terminal equipment where the uniform temperature plate is located.
  • the capillary structure is located inside the accommodating cavity, and the capillary structure and the accommodating cavity are independent of each other. In this way, the capillary structure and other structures of the uniform temperature plate are relatively independent, easy to replace, and more flexible in use.
  • both the first cover plate and the second cover plate abut against the surface of the capillary structure.
  • the distance between the first cover plate and the second cover plate will be approximately equal to the thickness of the capillary structure, and the overall thickness of the uniform temperature plate is only equivalent to the superposition of the thickness of the first cover plate, the second cover plate and the capillary structure. Therefore, the thickness of the uniform temperature plate can be further reduced.
  • the first cavity penetrates two oppositely arranged surfaces of the capillary structure, wherein the two oppositely arranged surfaces are respectively arranged opposite to the first cover plate and the second cover plate.
  • the upper and lower ends of the through groove have openings, and the space inside the through groove can still be used for steam to flow, the overall structure of the first cavity and the capillary structure are relatively simple, and the processing difficulty is relatively low.
  • the first cavity is in communication with a surface of the capillary structure; or, the first cavity is located inside the capillary structure and is not in communication with the surface of the capillary structure.
  • the first cavity extends from the hot end of the uniform temperature plate to the cold end of the uniform temperature plate. Since there is a large temperature difference between the hot end and the cold end of the uniform temperature plate, the steam flows through the hot and cold ends of the uniform temperature plate through the first cavity, which can make the evaporation and condensation process of the working fluid more thorough. Thereby improving the heat conduction efficiency of the uniform temperature plate.
  • the first cavity includes a first extension section and at least one second extension section, the first extension section extends from the capillary structure to the cold end of the capillary structure, and the position of the second extension section is opposite to the cold end of the uniform temperature plate.
  • the first end of the second extension section communicates with the first extension section, and the second end of the second extension section extends to the side of the first extension section.
  • a single first cavity can cover a larger part of the capillary structure, so that multiple parts in the capillary structure can realize the flow of steam through the same first cavity; at the same time, let the first cavity be at the corresponding uniform temperature
  • the cold end area of the plate has a faster heat exchange rate, so that the steam can be condensed into a liquid state more quickly, thereby improving the heat dissipation efficiency.
  • the first cavity has different cross-sectional areas at different positions along its length.
  • the first cavity has a variable cross-section structure, which can optimize the flow mode of steam in the capillary structure, thereby improving its own flow resistance and heat exchange capacity and other parameters, so that the capillary structure has better heat exchange capacity.
  • the minimum radial width of the cross section of the first cavity is greater than or equal to 0.1 mm. In this way, the steam flow rate in the first cavity is faster, and it is not easy to be blocked.
  • the number of the first cavity is at least one.
  • the multiple first cavities are arranged at intervals in a direction parallel to the first cover plate.
  • multiple first cavities can meet the requirements of different working conditions of the temperature equalizing plate.
  • the multiple first cavities are arranged in a direction perpendicular to the thickness direction of the equalizing plate, so the number of first cavities is only equal to The width of the capillary structure is related, and will not affect the thickness of the capillary structure or even the entire temperature plate.
  • the first cavity is arranged at a position of the capillary structure corresponding to the hot end of the uniform temperature plate, and communicates with the outside of the capillary structure.
  • the working fluid returning from the capillary structure to the hot end of the uniform temperature plate can directly escape the first cavity to the outside of the capillary structure after being heated and form steam.
  • the thermal cycle process of the working fluid inside the uniform temperature plate is smoother, which improves The heat conduction and heat dissipation capacity of the uniform temperature plate.
  • the first cavity is a hole or groove opened at a position of the capillary structure corresponding to the hot end of the uniform temperature plate.
  • the maximum dimension of the first cavity along the extension direction of the capillary structure is less than or equal to 2 mm.
  • the cross section of the first cavity perpendicular to the extension direction of the capillary structure will also have a smaller size, which will occupy a smaller proportion of the area in the capillary structure, thereby reducing the flow of the first cavity to the internal working fluid of the capillary structure itself.
  • the influence of speed ensures that the uniform temperature plate has better heat conduction and thermal cycle efficiency.
  • the side of the first cover plate facing the capillary structure is provided with a support part; the end of the support part abuts against the surface of the capillary structure, or the end of the support part abuts against the second cover plate.
  • the first cover plate is thin, it is not easily deformed under the support of the supporting part, which can improve the structural strength and rigidity of the temperature equalizing plate, and avoid the deformation and depression of the temperature equalizing plate.
  • the supporting portion is a supporting column extending from the first cover plate to the capillary structure. Since the column structure of the support column has a smaller cross section, it can effectively reduce the weight of the first cover plate and reduce the occupied volume, or a larger space can be formed on the side of the support column.
  • the number of the supporting parts is multiple, and the multiple supporting parts are arranged on the first cover plate at intervals.
  • multiple supporting parts can be used to adapt to the first cover plates of different areas and thicknesses, so as to ensure that the first cover plates are stably supported.
  • the uniform temperature plate there is a second cavity between the capillary structure and the surface of the first cover plate through which steam can pass.
  • the second cavity due to the existence of the second cavity, there are more channels for steam flow in the uniform temperature plate, thereby increasing the heat circulation speed in the uniform temperature plate, and the uniform temperature plate has higher heat conduction and heat dissipation efficiency.
  • the side of the second cover plate facing the capillary structure is provided with a groove, and the capillary structure is arranged in the groove.
  • the first cover plate can be set on the notch of the groove, thereby enclosing a hollow containing cavity together with the second cover plate, and the capillary structure can be set in the groove, and the groove wall of the groove is surrounded Around the capillary structure.
  • the third cavity 6 can also be used for the steam formed by the vaporization of the working fluid to pass through.
  • the third cavity and the capillary structure are arranged side by side, the third cavity will not affect the overall thickness of the uniform temperature plate. While ensuring the thinness of the uniform temperature plate, it can increase the thermal cycle speed of its internal working fluid and improve the heat transfer and heat dissipation efficiency of the uniform temperature plate.
  • the capillary structure is formed on the cavity wall of the accommodating cavity.
  • the capillary structure is located on the surface of the first cover plate and/or the second cover plate.
  • the accommodating cavity is a closed cavity, and the accommodating cavity has a liquid injection port.
  • the working fluid of the uniform temperature plate can be injected into the interior of the containing cavity through the liquid injection port, and absorb and release heat through its own phase changes such as vaporization and liquefaction, so as to realize the heat conduction and heat dissipation of the uniform temperature plate.
  • the formation of the capillary structure may include at least one of the following: weaving, sintering, and notching.
  • the present application provides a terminal device, including a heat source and the above-mentioned uniform temperature plate, and the uniform temperature plate and the heat source have heat conduction.
  • the capillary structure inside the temperature equalization plate is set as a whole, and a first cavity is opened inside the capillary structure to replace the existing steam channel, so that the working fluid in the gas phase can flow and heat exchange through the first cavity. Circulation, so the uniform temperature plate no longer needs to leave space for the steam channel in the thickness direction, which can reduce the overall thickness of the uniform temperature plate, which is beneficial to the overall thinning of the uniform temperature plate and the terminal equipment.
  • the terminal device further includes a housing, and the temperature equalizing plate and the housing have heat conduction.
  • the temperature equalizing plate can absorb the heat from the internal heat source of the terminal device such as the processor, and then release it into the outside air through the housing, thereby dissipating heat for the terminal device.
  • the temperature equalizing plate includes a first cover plate, a second cover plate, and a capillary structure.
  • the first cover plate and the second cover plate jointly enclose an accommodating cavity.
  • the capillary structure is arranged in the accommodating cavity, and the capillary structure is provided with a capillary structure.
  • the first cavity for steam to pass through. Since the first cavity does not occupy space in the thickness direction of the uniform temperature plate, the overall thickness of the uniform temperature plate can be reduced, thereby facilitating the overall thinning of the uniform temperature plate and the terminal device where the uniform temperature plate is located.
  • Fig. 1 is a schematic diagram of the structure of an existing uniform temperature plate
  • FIG. 2a is a schematic cross-sectional view of a first structure of a temperature equalization plate provided by an embodiment of the present application
  • 2b is a schematic cross-sectional view of a second structure of a temperature equalization plate provided by an embodiment of the present application;
  • Figure 3 is a top view of a temperature equalizing plate provided by an embodiment of the present application.
  • FIG. 4 is a schematic diagram of the structure of the first type of first cavity in the uniform temperature plate provided by the embodiment of the present application;
  • FIG. 5 is a schematic structural diagram of a second type of first cavity in a temperature equalizing plate provided by an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a third type of first cavity in a temperature equalization plate provided by an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of another uniform temperature plate provided by an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • Fig. 9 is a block diagram of the internal structure when the terminal device in Fig. 8 is a mobile phone.
  • Vapor Chamber Also known as the Vapor Chamber, it is a vacuum chamber with a fine structure on the inner wall and filled with working fluid.
  • the working principle of the temperature equalizing plate is roughly the same as that of the heat pipe, which specifically includes four main steps of conduction, evaporation, convection, and solidification.
  • the steam in the uniform temperature plate diffuses from the high-pressure zone to the low-pressure zone (ie, low-temperature zone), when the steam contacts the inner wall with a lower temperature, it will quickly condense into a liquid state and release heat; it condenses into a liquid state
  • the working fluid returns to the heat source through the capillary force of the fine structure (capillary structure), thereby completing a heat conduction cycle, forming a two-way circulation system in which the working fluid coexists with vapor and liquid phases.
  • the commonly used material of the temperature equalizing plate is copper, and the working medium inside is pure water.
  • Capillary structure Due to the surface tension of the liquid surface, when the infiltrating liquid is in the pores, the liquid surface is concave, so that the liquid surface exerts a pulling force on the liquid below, causing the liquid to follow the tube wall of the capillary Move up. This causes the capillary phenomenon.
  • the capillary structure may include multiple capillary pores or fine grooves similar to capillary pores and other structures. In this way, when the liquid working fluid enters the capillary pores or fine grooves in the capillary structure, it will flow to the other end of the capillary through capillary action to complete the transfer and return of the working fluid.
  • Fig. 2a is a schematic cross-sectional view of a first structure of a temperature equalization plate provided by an embodiment of the present application.
  • Fig. 2b is a schematic cross-sectional view of the second structure of the temperature equalization plate provided by the embodiment of the present application.
  • Fig. 3 is a top view of a temperature equalizing plate provided by an embodiment of the present application.
  • the temperature equalization plate provided in this embodiment includes a first cover plate 1, a second cover plate 2 and a capillary structure 3.
  • the first cover plate 1 and the second cover plate 2 jointly enclose a container In the accommodating cavity 4, the capillary structure 3 is arranged in the accommodating cavity 4, and the capillary structure 3 is provided with a first cavity 31 through which steam can pass.
  • the temperature equalizing plate can be applied to the heat dissipation structure of terminal equipment or other electronic equipment, and is used to conduct heat dissipated by heat sources such as the processor of the terminal equipment to other locations, thereby realizing heat dissipation and cooling for the terminal equipment.
  • the uniform temperature plate can be a plate-like structure with a small thickness
  • the external structure of the uniform temperature plate includes the first cover plate 1 and the second cover plate 2 and other components.
  • the first cover plate 1 and the second cover plate 2 may jointly enclose a hollow accommodating cavity 4. At this time, the first cover plate 1 and the second cover plate 2 will form two opposite surfaces of the uniform temperature plate.
  • the accommodating cavity 4 can be used for arranging the working fluid and the capillary structure 3, and the absorption, release and transfer of heat can be realized through the gas and liquid phase conversion of the working fluid in the accommodating cavity 4.
  • the first cover plate 1 or the second cover plate 2 is used as the outer shell of the temperature equalizing plate, which can directly or indirectly contact the heat source and realize heat conduction, thereby completing the absorption and heat dissipation of the heat generated by the heat source.
  • the working fluid can be filled in the internal space of the accommodating cavity 4, and a part of the working fluid in liquid form is left inside the capillary structure 3.
  • first cover plate 1 and the second cover plate 2 when used as structural parts of the uniform temperature plate to conduct heat conduction with the heat source, they can be directly attached and contacted with the heat source, or they can be realized by other heat conducting parts and the heat source. Indirect heat conduction. Wherein, for example, the second cover plate 2 can conduct heat conduction with the heat source, and the first cover plate 1 is located on the side of the uniform temperature plate away from the heat source.
  • a capillary structure 3 is provided in the accommodating cavity 4 of the uniform temperature plate.
  • a plurality of capillary pores extending in a certain direction or grooves equivalent to the capillary pores will be formed.
  • the liquid working fluid can flow from one end of the capillary to the other end of the capillary under the action of capillary, and the heat absorbed and stored in the working fluid will also be transferred between these two ends of the capillary.
  • the uniform temperature plate can absorb heat from the heat source and transfer the heat to the end of the uniform temperature plate away from the heat source for release, at this time, the end of the uniform temperature plate close to the heat source is the hot end 10 of the uniform temperature plate. (Or called the heated end), and the end far away from the heat source is the cold end 20 (or called the condensing end) of the uniform temperature plate.
  • the extension direction of the capillary pores can be from the hot end 10 to the cold end 20 of the uniform temperature plate.
  • the accommodating cavity 4 enclosed by the first cover plate 1 and the second cover plate 2 will also be a cavity with a small thickness.
  • the capillary structure 3 as a whole also presents a shape similar to a sheet.
  • one of the surfaces will face the first cover plate 1, which can be defined as the upper surface of the capillary structure 3; and the other surface of the capillary structure 3 faces the second cover plate 2. This surface can be defined as the lower surface of the capillary structure 3.
  • the working fluid in the uniform temperature plate absorbs the heat from the heat source, the working fluid that was originally in the liquid phase will be transformed into a gas phase. At this time, the volume of the working fluid will expand and occupy a larger space.
  • the working fluid in the gas phase that is, the steam formed by the working fluid
  • the accommodating cavity 4 needs to have a space for the steam to flow through.
  • the inside of the capillary structure 3 allows the working fluid to flow through smaller pores, and when the overall thickness of the uniform temperature plate is thin, between the upper surface of the capillary structure 3 and the first cover plate 1, or between the capillary structure 3 There may only be a small gap between the lower surface and the second cover plate 2. In this way, a large enough channel cannot be formed between the upper and lower surfaces of the capillary structure 3 and the two cover plates, so that the steam can flow from the hot end 10 to the cold end 20 of the uniform temperature plate.
  • a first cavity 31 is provided inside the capillary structure 3, so that the steam formed after the working fluid is heated and evaporated can enter the first cavity 31 and be transferred from the first cavity 31.
  • the cavity 31 flows to other parts of the uniform temperature plate to realize condensation and heat release.
  • the first cavity 31 since the first cavity 31 is located inside the capillary structure 3, the first cavity 31 does not occupy the internal space of the uniform temperature plate in the thickness direction of the uniform temperature plate. Compared with the existing structure in which the two-layer capillary structure 3 is provided in the temperature equalizing plate, and the vapor channel is formed by the gap between the two-layer capillary structure 3 in the thickness direction, the steam no longer needs to pass between the cover plate and the capillary structure 3 or is different. The gaps between the capillary structures 3 realize flow.
  • the capillary structure 3 inside the uniform temperature plate is set as a whole, and the first cavity 31 is opened inside the capillary structure 3 to replace the steam channel in the prior art, so that the working fluid in the gas phase can pass through the first cavity. 31 to achieve flow and heat exchange cycle. Since the first cavity 31 does not occupy space in the thickness direction of the uniform temperature plate, there is no need to leave a space for the steam channel in the thickness direction of the uniform temperature plate. At this time, as long as the thickness of the capillary structure 3 is reasonably controlled, a smaller distance can be formed between the first cover plate 1 and the second cover plate 2 of the uniform temperature plate, and the overall thickness of the uniform temperature plate can be reduced. This is beneficial to the overall thinning of the uniform temperature plate and the terminal equipment where the uniform temperature plate is located.
  • the first cavity 31 in the uniform temperature plate can have different structures, shapes and specific forms, in order to facilitate the understanding of the solution, the overall structure of the capillary structure 3, the first cavity 31 and the uniform temperature plate will be further detailed below. Description.
  • the capillary structure 3 when the capillary structure 3 is provided in the accommodating cavity 4 of the uniform temperature plate, the capillary structure 3 may be an independent component, or may be an integrated structure with the first cover plate 1 or the second cover plate 2.
  • the capillary structure 3 can also be formed on the cavity wall of the accommodating cavity 4.
  • the capillary structure 3 is not an independent structure or component, but other structures attached to the uniform temperature plate, such as the first cover plate 1 or the second cover plate 2.
  • the capillary structure 3 can be formed by forming or processing capillary pores or micro-grooves on the cavity wall of the accommodating cavity 4, and using these capillary pores or micro-grooves to play a capillary function.
  • the capillary structure 3 When the capillary structure 3 is a structure formed on the cavity wall of the accommodating cavity 4, the capillary structure may be located on the surface of at least one of the first cover plate and the second cover plate. It is understandable that the capillary structure will be located on the side of the first cover plate facing the second cover plate, or on the side surface of the second cover plate facing the first cover plate, so that the capillary structure will be located on the first cover plate or The inside of the second cover plate is the inside of the accommodating cavity.
  • the capillary structure 3 can be arranged in the accommodating cavity 4, and the capillary structure 3 and the cavity wall of the accommodating cavity 4 are independent of each other, so that the capillary structure 3, the first cover plate 1 and the second The two cover plates 2 are independent of each other.
  • the capillary structure 3 can be placed in the accommodating cavity 4 and fixed to the cavity wall of the accommodating cavity 4 in various detachable or non-detachable ways. In this way, the capillary structure 3 and other structures of the uniform temperature plate are relatively independent, easy to replace, and more flexible in use.
  • the capillary structure 3 is independently arranged in the accommodating cavity 4 and separated from the cavity wall of the accommodating cavity 4 as an example for description.
  • both the first cover plate 1 and the second cover plate 2 can abut the surface of the capillary structure 3.
  • the first cover plate 1 and the second cover plate 2 will clamp the capillary structure 3 together, and the upper surface and the lower surface of the capillary structure 3 will be in contact with the cavity of the accommodating cavity 4, respectively.
  • the wall abuts, so that the distance between the first cover plate 1 and the second cover plate 2 will be approximately equal to the thickness of the capillary structure 3, and the overall thickness of the uniform temperature plate is only equivalent to the first cover plate 1 and the second cover plate 2. And the thickness of the capillary structure 3 is superimposed, so the thickness of the temperature equalization plate can be further reduced.
  • first cover plate 1 and the second cover plate 2 can have a variety of different structures and shapes, so correspondingly, the surface of the first cover plate 1 or the second cover plate 2 is against the surface of the capillary structure 3
  • the location of the connection is also different.
  • the first cover plate 1 or the second cover plate 2 may have structures such as protrusions or grooves.
  • a structure such as a protrusion may be provided on the first cover plate 1.
  • the surface of the capillary structure 3 may abut against the top of the protrusion or the groove, so that the surface of the first cover plate 1 and the capillary structure 3 are still in a tightly abutting state.
  • the uniform temperature plate has a relatively small thickness as a whole, if the first cover plate 1 is a flat structure, when there is a gap between the upper surface of the first cover plate 1 and the capillary structure 3, if the outer surface of the first cover plate 1 Because the middle area of the first cover plate 1 is subjected to external forces, the first cover plate 1 has a relatively thin thickness and insufficient structural rigidity, and a concave deformation phenomenon may occur, which may damage the overall structure of the uniform temperature plate. Therefore, a supporting structure can be provided on the first cover plate 1 of the uniform temperature plate to keep the thinner first cover plate 1 from being deformed.
  • the temperature equalizing plate in this embodiment includes the first cover plate 1, and the side facing the capillary structure 3 is further provided with a supporting portion 11.
  • the end of the support portion 11 may abut against the surface of the capillary structure 3 or abut against the second cover plate 2. In this way, after the end of the support portion 11 is supported by the capillary structure 3 or the second cover plate 2, the entire structure of the first cover plate 1 can be supported.
  • the supporting portion 11 and the first cover plate 1 may be provided independently of each other, or may be integrally formed with the first cover plate 1.
  • the supporting portion 11 can be formed on the first cover plate 1 facing the capillary structure 3 by machining or the like, and the end of the supporting portion 11 can abut against the surface of the capillary structure 3, when When the outer surface of the first cover plate 1 receives an external force, the support 11 can transmit the force received on the first cover plate 1 to the capillary structure 3, so that the capillary structure 3 and the second cover plate 2 can share The force received on the first cover plate 1. Maintain the first cover plate 1 without deformation.
  • the support portion 11 may have a variety of different shapes.
  • the support portion 11 may be a bump with a larger area provided on the side of the first cover plate 1 facing the capillary structure 3, and the end surface of the bump and The capillary structure 3 abuts, or the supporting portion 11 may also be a columnar protrusion extending from the first cover plate 1, and the end of the columnar protrusion abuts against the surface of the capillary structure 3.
  • the number of the support portions 11 may be one or multiple.
  • the number of support portions 11 on the first cover plate 1 may be multiple, and the multiple support portions 11 are arranged on the first cover plate 1 at intervals.
  • the plurality of support portions 11 may be uniformly arranged on the first cover plate 1, or may be arranged unevenly according to the structural strength characteristics of the first cover plate 1. At the same time, all the supporting parts 11 may have the same size and shape, or different supporting parts 11 may have different sizes and shapes.
  • the supporting portion 11 may be a supporting column extending from the first cover plate 1 to the capillary structure 3.
  • one end of the support column is connected to the surface of the first cover plate 1, and the other end abuts against the surface of the capillary structure 3 or the inner bottom surface of the second cover plate 2 to support the first cover plate 1.
  • the column structure of the support column has a smaller cross section, the weight of the first cover plate 1 can be effectively reduced, and the occupied volume can be reduced, or a larger space can be formed on the side of the support column.
  • the support column can have a variety of different cross-sectional shapes, for example, the cross-section of the support column can be rectangular, diamond, circular, and other different shapes, which are not limited here.
  • the capillary structure 3 may be correspondingly provided with an escape space for the supporting portion 11 to pass through.
  • the escape space of the capillary structure 3 can be in the form of a through hole, and the cross-sectional shape of the through hole can match the shape of the end of the support portion 11, for example, it can also have different shapes such as a rectangle, a diamond, and a circle.
  • a second cavity 5 can be formed between the upper surface of the capillary structure 3 and the surface of the first cover plate 1 for steam to pass through.
  • the function and structure of the second cavity 5 can be similar to those of the first cavity 31, and both are used to form a steam channel for the steam formed after the working fluid is evaporated to flow from the hot end 10 of the uniform temperature plate to the uniform temperature plate.
  • the cold end of 20 due to the existence of the second cavity 5, there are more channels for steam flow in the uniform temperature plate, thereby increasing the heat circulation speed in the uniform temperature plate, so that the uniform temperature plate has higher heat conduction and heat dissipation efficiency.
  • the upper and lower chamber walls of the second cavity 5 may be formed by the surface of the first cover plate 1 and the upper surface of the capillary structure 3 respectively.
  • the side cavity wall of the second cavity 5 may be surrounded by the supporting portion 11 or formed by the first cover plate 1 or the second cover plate 2.
  • the edge of the first cover plate 1 can extend to the second cover plate 2 and be connected to the corresponding part of the second cover plate 2, and the first cover plate The edge of 1 can enclose the side cavity wall of the second cavity 5.
  • the edge of the first cover plate 1 will protrude toward the second cover plate 2 and form a shape similar to a groove or cavity, and the edge of the first cover plate 1 can form the side of the groove or cavity.
  • Wall, and the supporting portion 11 will be accommodated in the groove or cavity.
  • part of the side wall of the second cavity 5 may also be formed by the supporting portion 11.
  • the first cover plate 1 is still a flat surface as a whole, and the second cover plate 2 will have a groove or cavity structure, and let the first cover plate 1 The cover is arranged on the groove or the opening of the cavity to form a closed accommodating cavity 4.
  • the second cover plate 2 has a structure such as a side wall extending toward the first cover plate 1, and the side wall of the second cover plate 2 can enclose the side cavity wall of the second cavity 5.
  • part of the side wall of the second cavity 5 may also be formed by the supporting portion 11.
  • the second cavity 5 may also have other structures.
  • the side wall of the second cavity 5 may also be completely composed of the support portion 11.
  • the support portion 11 may be enclosed in a closed shape, and the support portion 11
  • the inner side can form the side wall of the second cavity 5.
  • the first cavity 31 may have a variety of different structures accordingly.
  • the first cavity 31 may have different structures and cross-sectional forms perpendicular to its extending direction.
  • the first cavity 31 may penetrate through two oppositely arranged surfaces of the capillary structure 3, wherein the two opposite surfaces are connected to the first cover plate 1 and the second cover plate 1 and the second surface respectively.
  • the cover plate 2 is arranged oppositely.
  • the two surfaces of the capillary structure 3 opposite to the first cover plate 1 and the second cover plate 2 can be defined as the upper surface and the lower surface of the capillary structure 3, respectively.
  • the first cavity 31 can penetrate the upper surface and the lower surface of the capillary structure 3, thereby forming a through groove that penetrates both upper and lower surfaces on the capillary structure 3, as shown in FIG. 2a. In this way, both the upper and lower ends of the through groove have openings, and the space inside the through groove can still allow steam to flow.
  • the overall structure of the first cavity 31 and the capillary structure 3 is relatively simple, and the processing difficulty is relatively low.
  • the first cavity 31 may not penetrate the two oppositely arranged surfaces of the capillary structure 3, but only communicate with one of the surfaces of the capillary structure 3, as shown in FIG. 2b.
  • the first cavity 31 when the first cavity 31 penetrates the upper and lower surfaces of the capillary structure 3, the first cavity 31 may have different cross-sectional shapes.
  • the cross section of the first cavity 31 perpendicular to its extending direction may be rectangular, or have different shapes such as trapezoid, rhombus, circular arc, and the like.
  • the cross-sectional shape of the first cavity 31 may be rectangular.
  • the first cavity 31 may have a variety of different forms and overall layout structures:
  • FIG. 4 is a schematic diagram of the structure of the first type of first cavity in the uniform temperature plate provided by the embodiment of the present application. As shown in FIGS. 2 to 4, in the first optional layout of the first cavity 31, the first cavity 31 in the capillary structure 3 can be extended from the hot end 10 of the uniform temperature plate to the uniform temperature. The cold end of the board 20.
  • the first cavity 31 may be a single channel-like structure extending along the hot end 10 of the uniform temperature plate to the cold end 20 of the uniform temperature plate. Since the uniform temperature plate needs to conduct the heat of the heat source to the part far away from the heat source and radiate through the phase change process such as the evaporation and condensation of the working fluid, the steam needs to flow from the part close to the heat source of the uniform temperature plate to the part far away from the heat source. In order to achieve the transfer of heat.
  • the extended area of the first cavity 31 passes through the hot end area of the uniform temperature plate and the cold end area of the uniform temperature plate.
  • the working fluid in the capillary structure 3 will quickly evaporate after receiving the heat from the heat source in the hot end area, and flow through the first cavity 31 to the cold end area of the uniform temperature plate, and finally condense in the cold end area with a lower temperature.
  • the steam will flow through the hot end 10 and the cold end 20 of the uniform temperature plate through the first cavity 31, which can allow the evaporation of the working fluid and The condensation process is more thorough, thereby improving the heat conduction efficiency of the uniform temperature plate.
  • the hot end 10 and the cold end 20 on the equalizing plate may have different relative positions according to the shape of the equalizing plate and the relative position of the heat source.
  • the uniform temperature plate may have one end as the hot end 10 and the other end opposite to the hot end 10 as the cold end 20; or the middle area of the uniform temperature plate is the hot end 10 and the edge area is the cold end 20; or
  • the hot end 10 and the cold end 20 of the warm plate can also be other forms and layouts commonly used by those skilled in the art, and are not limited here.
  • the first cavity 31 When the first cavity 31 is used to connect the cold end 20 and the hot end 10 of the uniform temperature plate, so that the steam flows inside the uniform temperature plate, according to the different working conditions and size of the uniform temperature plate, the first cavity can be
  • the number of 31 is one or more.
  • the number of the first cavities 31 may be multiple, and the multiple first cavities 31 are arranged at intervals in a direction parallel to the first cover plate 1. At this time, the plurality of first cavities 31 are arranged in a direction perpendicular to the thickness direction of the uniform temperature plate, so the number of the first cavities 31 is only related to the width of the capillary structure 3, and will not affect the capillary structure 3. Even the thickness of the entire temperature plate.
  • the steam can be arranged along the plurality of different first cavities.
  • the cavity 31 flows to the cold end 20 of the uniform temperature plate.
  • the flow rate of steam can be increased by increasing the number of first cavities 31, and more parts of the capillary structure 3 can flow steam, thereby increasing
  • the heat conduction efficiency of the temperature equalizing plate makes the temperature equalizing plate have better heat conduction and heat dissipation capabilities.
  • the multiple first cavities 31 may be arranged at equal intervals or at different intervals; and different first cavities 31 may also have the same Or different lengths and cross-sectional shapes. Specifically, the arrangement interval, length, and cross-sectional shape of the first cavity 31 can be adjusted accordingly according to the usage scenarios and requirements of the temperature equalizing plate, which will not be repeated here.
  • Fig. 5 is a schematic structural diagram of a second type of first cavity in a temperature equalizing plate provided by an embodiment of the present application.
  • the first cavity 31 may include a first extension section 311 and at least one second extension section 312, and the second extension section 312 is located in the region of the capillary structure 3 corresponding to the cold end 20 of the temperature equalization plate; the first extension section 311 extends from the hot end 10 of the capillary structure 3 to the cold end 20 of the capillary structure 3, and the first end and the second end of the second extension section 312 are An extension section is connected, and the second end of the second extension section 312 extends to the side of the first extension section 311. This shape facilitates the circulation of steam and heat exchange in the capillary structure 3.
  • the first cavity 31 is no longer a simple single channel, but a complex structure with branches.
  • the single first cavity 31 not only includes the first extension section 311, but also includes the second extension section 312 connected to the first extension section 311 to serve as a branch of the first extension section 311, so that a single first cavity
  • the cavity 31 can cover a larger part of the capillary structure 3, so that multiple parts of the capillary structure 3 can realize the flow of steam through the same first cavity 31; at the same time, let the first cavity 31 be at a corresponding uniform temperature
  • the cold end area of the plate has a second extension section 312, which can accelerate the heat exchange speed of the first cavity 31 in this part.
  • first extension section 311 and the second extension section 312 may be straight sections or curved sections.
  • first extension section 311 and the second extension section 312 are both straight sections as an example for description.
  • the second extension section 312 may be multiple, and they respectively extend to different sides of the first extension section 311.
  • the extension direction of the second extension section 312 may be perpendicular to the extension direction of the first extension section 311, and may also have an acute angle or the like between the extension direction of the first extension section 311.
  • the extension directions of different second extension sections 312 may be the same or different.
  • the first extension section 311 may be correspondingly provided with a plurality of second extension sections 312, correspondingly, the cross-sectional area of the first extension section 311 may be larger than the cross-sectional area of the second extension section 312 to allow steam Have sufficient flow speed.
  • the first cavity 31 When the first cavity 31 extends along the length direction of the capillary structure 3 as a whole, as an optional manner, the first cavity 31 has different cross-sectional areas at different positions along its length direction. In this way, the first cavity 31 has a variable cross-section structure, which can optimize the flow mode of steam in the capillary structure 3, thereby improving its own flow resistance and heat exchange capacity and other parameters, so that the capillary structure 3 has better heat exchange capacity.
  • the cross-sectional area of the first cavity 31 can be the same everywhere along its length, so that the steam in the first cavity 31 is more uniform.
  • the flow rate can be the same everywhere along its length, so that the steam in the first cavity 31 is more uniform.
  • the first air When the cavity 31 as a whole extends along the length direction of the capillary structure 3, the minimum radial width of the cross section of the first cavity 31 may be greater than or equal to 0.1 mm. In this way, the flow rate of the steam in the first cavity 31 is relatively fast and it is not easy to be blocked.
  • the number of the first cavities 31 can also be more than one, and the first cavities 31 are more than one.
  • the plurality of first cavities 31 are arranged at intervals along a direction parallel to the first cover plate 1.
  • Fig. 6 is a schematic structural diagram of a third type of first cavity in a temperature equalization plate provided by an embodiment of the present application.
  • the first cavity 31 can be arranged at a position of the capillary structure 3 corresponding to the hot end 10 of the temperature equalization plate, and the capillary structure 3 The outside is connected to serve as an air outlet space for steam to escape from the hot end 10.
  • the accommodating cavity 4 mainly contains the capillary structure 3, when the liquid working fluid in the accommodating cavity 4 is heated and vaporized, the capillary structure 3 is easily obstructed, making it difficult for steam to escape into the first cavity 31.
  • the working fluid returning from the capillary structure 3 to the hot end 10 of the uniform temperature plate can directly escape the first cavity 31 to the outside of the capillary structure 3 after being heated and forming steam.
  • the thermal cycle process of the mass in the uniform temperature plate is relatively smooth, which improves the heat conduction and heat dissipation capacity of the uniform temperature plate.
  • the first cavity 31 when the first cavity 31 is disposed at a position of the capillary structure 3 corresponding to the hot end 10 of the uniform temperature plate, and communicates with the outside of the capillary structure 3, there can be a variety of different structural shapes, positions and arrangements.
  • the first cavity 31 may be a hole or a groove opened on the capillary structure 3 at this time.
  • the openings of the holes or the grooves of the grooves can both face the outside of the capillary structure 3 and communicate with the space outside the capillary structure 3, so as to facilitate the escape of steam from these holes or grooves.
  • the first cavity 31 may also be in the form of a through hole or a through groove.
  • the number of holes and grooves may be one or more. And when there are multiple holes or grooves, the holes or grooves will be arranged at intervals to cover as many areas as possible on the capillary structure 3, so that the capillary structure 3 is located at the hot end 10 of the uniform temperature plate.
  • the parts and areas can quickly escape steam, improve the internal heat circulation speed of the uniform temperature plate, and ensure that the uniform temperature plate has good heat conduction and heat dissipation efficiency.
  • the first cavity 31 communicating with the outside of the capillary structure 3 is opened at the position of the capillary structure 3 corresponding to the hot end 10 of the uniform temperature plate, the first cavity 31 will occupy a part of the capillary pores of the capillary structure 3 at this position. space. If the space where the capillary is located is taken up too much, it may affect the flow of the working fluid inside the capillary structure 3 itself, and make the thermal cycle speed inside the uniform temperature plate slower or even blocked. In order to avoid the above phenomenon, optionally, the maximum dimension of the first cavity 31 along the extension direction of the capillary structure 3 may be less than or equal to 2 mm at this time.
  • the first cavity 31 may exist in the form of a hole or a groove, and the hole diameter or the width of the groove may be less than or equal to 2 mm.
  • the cross section of the first cavity 31 perpendicular to the extension direction of the capillary structure 3 will also have a smaller size, which will occupy a smaller proportion of the area in the capillary structure 3, thereby reducing the effect of the first cavity 31 on the capillary structure 3.
  • the influence of the internal working fluid flow speed ensures that the uniform temperature plate has better heat conduction and thermal cycle efficiency.
  • the first cover plate 1 and the second cover plate 2 can also have a variety of different shapes and structures. The following describes other possible structures of the first cover plate 1 and the second cover plate 2. Specific instructions.
  • Fig. 7 is a schematic structural diagram of another temperature equalizing plate provided by an embodiment of the present application.
  • the overall structure and working principle of the temperature equalization plate are similar to those of the previous embodiment, and both include the first cover plate 1, the second cover plate 2, and the capillary structure 3, and so on. No longer.
  • the difference between the temperature equalization plate and the aforementioned equalization plate is that the surface of the included first cover plate 1 facing the capillary structure 3 is not provided with protrusions, but adopts a flat-plate structure with a relatively simple shape.
  • the first cover plate 1 as a whole may be a flat structure, and its upper and lower surfaces are both flat. That is, the surface of the first cover plate 1 facing the capillary structure 3 can still be a flat surface.
  • the overall structure of the first cover plate 1 is relatively simple.
  • the surface of the capillary structure 3 when the surface of the first cover plate 1 and the capillary structure 3 abut, the surface of the capillary structure 3 can abut the inner surface of the first cover plate 1, so that the capillary structure 3 The whole inner surface of the first cover plate 1 is attached together.
  • the second cover plate 2 may also have a variety of different structures and types.
  • the side of the second cover plate 2 facing the capillary structure 3 may be provided with a groove 21, and the capillary structure 3 is provided in the groove 21.
  • the second cover plate 2 is provided with a groove 21, and the notch of the groove 21 is opened toward the first cover plate 1, so that the first cover plate 1 can cover the notch of the groove 21 so as to be in contact with the first cover plate 1.
  • the two cover plates 2 jointly enclose a hollow accommodating cavity 4, and the capillary structure 3 can be arranged in the groove 21, and the groove wall of the groove 21 is arranged around the capillary structure 3.
  • the shape and size of the groove 21 can match the size and size of the capillary structure 3, for example, the shape of the groove 21 and the capillary structure 3 are similar, and the size of the groove 21 is slightly larger than the size of the capillary structure 3. In this way, the capillary structure 3 can be conveniently fixed in the groove 21.
  • the width of the groove 21 is greater than the width of the capillary structure 3
  • a more obvious gap or space can be formed between the capillary structure 3 and the side groove wall of the groove 21, and the space will be along the side wall of the capillary structure 3.
  • the third cavity 6 has a similar orientation and structure to the first cavity 31 and the second cavity 5, the third cavity 6 can also be used for the vapor formed by the vaporization of the working fluid to pass through.
  • the third cavity 6 since the third cavity 6 is located between the capillary structure 3 and the side groove wall of the groove 21, that is, side by side with the capillary structure 3, the third cavity 6 will not affect the overall temperature uniformity plate. Thickness, so that while ensuring the thinness of the uniform temperature plate, it can increase the thermal cycle speed of its internal working fluid and improve the heat transfer and heat dissipation efficiency of the uniform temperature plate.
  • the third cavity 6 may have a variety of different shapes and arrangements.
  • the third cavity 6 can be located on one side of the capillary structure 3, or on opposite sides of the capillary structure 3.
  • the cross-sectional area and shape of the third cavity 6 can be based on the lateral shape and concave shape of the capillary structure 3.
  • the shape of the side groove wall of the groove 21 is provided, as long as the normal flow of steam can be ensured, and there is no restriction here.
  • the equalizing plate in order to enumerate the path for the flow of steam (gaseous working fluid), not only the first cavity 31 but also the second cavity 5 and the third cavity are included in the uniform temperature plate. Cavity 6.
  • the equalizing plate may only include the first cavity 31, or include the first cavity. 31 and the second cavity 5, or include the first cavity 31 and the third cavity 6, which are not limited here.
  • the first cavity 31 may actually communicate with the second cavity 5 or the third cavity 6. , Thereby forming a larger cavity together with the second cavity 5 or the third cavity 6.
  • the second cavity 5 and the third cavity 6 located on different sides of the capillary structure 3 can also communicate with each other.
  • the second cavity 5 and the third cavity 6 communicate with each other, and the first cavity 31 and the second cavity 5 may also communicate with each other, so that the first cavity 31, The second cavity 5 and the third cavity 6 together form a cavity.
  • first cavity 31, the second cavity 5, and the third cavity 6 may all be in communication with each other, the two may be in communication with each other, or completely independent of each other, as long as the cavities can be It is enough to increase the circulating speed of the working medium inside the temperature equalizing plate, and there is no restriction here.
  • the accommodating cavity 4 of the uniform temperature plate can be a closed cavity, and the accommodating cavity 4 has a liquid injection port.
  • the accommodating cavity 4 can be formed by abutting and sealing the first cover plate 1 and the second cover plate 2, and the working fluid of the uniform temperature plate can be injected into the accommodating cavity 4 through a liquid injection port and vaporized by itself. It absorbs and releases heat through phase changes such as liquefaction, so as to realize the heat conduction and heat dissipation of the uniform temperature plate.
  • the accommodating cavity 4 is composed of the first cover plate 1 and the second cover plate 2 together, a ring-shaped sealing edge can be provided at the joint position of the first cover plate 1 and the second cover plate 2 to avoid The working fluid flows out from the joint of the first cover plate 1 and the second cover plate 2.
  • the liquid injection port is arranged on one side of the sealing edge as a position for injecting the working fluid and vacuuming. Specifically, it can be separately arranged on the first cover plate 1 and the second cover plate 2 or formed by the first cover plate 1 and the second cover plate 2 together.
  • the form of the liquid injection port can be a reserved small nozzle, or a channel flush with the side of the cover plate, or a reserved micro-hole, etc., which can be a liquid injection commonly used by those skilled in the art.
  • the structure of the mouth is not limited here.
  • the second cover plate 2 is provided with a liquid injection port 22 for injecting working fluid and vacuuming.
  • the capillary pores or similar microgrooves in the capillary structure 3 can be formed in many different ways. The method of forming the capillary structure 3 will be described in detail below.
  • the capillary structure 3 can be formed by weaving capillary filaments with a smaller diameter. At this time, the capillary filaments and the capillary filaments can be woven together to form the capillary structure 3 with a certain shape, and the capillary structure 3 A fixed channel or gap for liquid working fluid is formed inside. The capillary filaments can be cut and grooved between the area close to the heat source and the area far away from the heat source, thereby forming the first cavity 31. Wherein, the wire diameter of the capillary filament may be less than or equal to 0.05 mm.
  • the capillary structure 3 may be sintered from powder.
  • the powder can be sintered into a porous structure to form the body of the capillary structure 3.
  • the powder can be copper powder or nickel powder, or metal or non-metal materials such as titanium powder or glass powder, and the maximum diameter of the powder can be less than 0.01 mm.
  • the first cavity 31 can be formed by setting a jig to form a reserved space in the capillary structure 3 during powder sintering, or it can be formed by secondary processing after the sintering is completed.
  • the capillary structure 3 can also be formed by a method similar to powder sintering, such as electroplating, spraying, and the like.
  • the capillary structure 3 can also be formed by other molding methods in the art, which will not be described here. limit.
  • the capillary structure 3 can also be carved into fine grooves on the body by etching, laser engraving or machining, and the fine grooves are used to serve as the capillary structure 3 Capillary function.
  • the capillary structure 3 with fine grooves can be formed by arranging a separate body structure and notching grooves on the body structure.
  • the first cover plate 1 or the second cover plate 2 can be used as the body of the notch and pass Grooves are carved on the surface of the first cover plate 1 or the second cover plate 2 to form a capillary structure 3 that can flow the working fluid.
  • the capillary structure 3 can also be formed by other methods commonly used by those skilled in the art, which will not be repeated here.
  • the temperature equalization plate includes a first cover plate, a second cover plate and a capillary structure.
  • the first cover plate and the second cover plate jointly enclose an accommodating cavity, the capillary structure is arranged in the accommodating cavity, and the capillary structure There is a first cavity through which steam can pass through. Since the first cavity does not occupy space in the thickness direction of the uniform temperature plate, the overall thickness of the uniform temperature plate can be reduced, thereby facilitating the overall thinning of the uniform temperature plate and the terminal device where the uniform temperature plate is located.
  • FIG. 8 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • the present application also provides a terminal device 100, which includes a heat source and the uniform temperature plate 200 described in the above embodiment, and the uniform temperature plate 200 and the heat source have heat conduction.
  • the heat emitted by the heat source can be conducted to other positions through the temperature equalizing plate 200, so as to realize the heat dissipation of the heat source.
  • the specific structure, function and working principle of the temperature equalizing plate 200 have been described in detail in the foregoing embodiment, and will not be repeated here.
  • the terminal device 100 involved in the embodiment of the present application may include a mobile phone, a tablet computer, a personal digital assistant (PDA), a point of sales (POS), a vehicle-mounted computer, and the like.
  • PDA personal digital assistant
  • POS point of sales
  • FIG. 9 is a block diagram of the internal structure when the terminal device in FIG. 8 is a mobile phone.
  • the terminal device 100 includes a radio frequency (RF) circuit 110, a memory 120, other input devices 130, a display screen 140, a sensor 150, an audio circuit 160, an I/O subsystem 170, a processor 180, And power supply 190 and other components.
  • RF radio frequency
  • the structure of the mobile phone shown in FIG. 9 does not constitute a limitation on the mobile phone, and may include more or less components than those shown in the figure, or combine certain components, or split certain components, or Different component arrangements.
  • the display screen 140 belongs to a user interface (User Interface, UI), and the terminal device 100 may include a user interface that is less than or less than that shown in the figure.
  • UI User Interface
  • the RF circuit 110 can be used for receiving and sending signals during information transmission or communication. In particular, after receiving the downlink information of the base station, it is processed by the processor 180; in addition, the designed uplink data is sent to the base station.
  • the RF circuit includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier (LNA), a duplexer, and the like.
  • the RF circuit 110 can also communicate with the network and other devices through wireless communication.
  • the wireless communication can use any communication standard or protocol, including but not limited to Global System of Mobile Communication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (Code Division Multiple Access). Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), Email, Short Messaging Service (SMS), etc.
  • GSM Global System of Mobile Communication
  • GPRS General Packet Radio Service
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • the memory 120 may be used to store software programs and modules.
  • the processor 180 executes various functional applications and data processing of the terminal device 100 by running the software programs and modules stored in the memory 120.
  • the memory 120 may mainly include a storage program area and a storage data area.
  • the storage program area may store an operating system, an application program required by at least one function (such as a sound playback function, an image playback function, etc.), etc.;
  • the storage data area may store Data (such as audio data, phone book, etc.) created according to the use of the terminal device 100, etc.
  • the memory 120 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state storage devices.
  • the other input device 130 may be used to receive input digital or character information, and generate key signal input related to user settings and function control of the terminal device 100.
  • other input devices 130 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, switch buttons, etc.), trackballs, mice, joysticks, optical mice (optical mice are touch sensitive that do not display visual output). A surface, or an extension of a touch-sensitive surface formed by a touch screen).
  • the other input device 130 is connected to the other input device controller 171 of the I/O subsystem 170, and performs signal interaction with the processor 180 under the control of the other device input controller 171.
  • the display screen 140 can be used to display information input by the user or information provided to the user and various menus of the terminal device 100, and can also accept user input.
  • the specific display screen 140 may include a display panel 141 and a touch panel 142.
  • the display panel 141 can be configured in the form of LCD (Liquid Crystal Display, liquid crystal display), OLED (Organic Light-Emitting Diode, organic light emitting diode), etc.
  • the touch panel 142 also known as a touch screen, a touch-sensitive screen, etc., can collect user contact or non-contact operations on or near it (for example, the user uses any suitable objects or accessories such as fingers, stylus, etc.) on the touch panel 142
  • the operations near the touch panel 142 may also include somatosensory operations; the operations include single-point control operations, multi-point control operations and other types of operations.), and drive the corresponding connection device according to a preset program.
  • the touch panel 142 may include two parts: a touch detection device and a touch controller.
  • the touch detection device detects the user's touch position and posture, and detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device and converts it into a processor capable of The processed information is then sent to the processor 180, and can receive and execute commands from the processor 180.
  • the touch panel 142 can be realized by various types such as resistive, capacitive, infrared, and surface acoustic wave, and any technology developed in the future can also be adopted to realize the touch panel 142.
  • the touch panel 142 can cover the display panel 141, and the user can display the content displayed on the display panel 141 (the display content includes, but is not limited to, soft keyboard, virtual mouse, virtual keys, icons, etc.), in the touch panel 142
  • the touch panel 142 transmits it to the processor 180 through the I/O subsystem 170 to determine the type of the touch event to determine the user input, and then the processor 180 determines the user input according to the touch event.
  • the type of display panel provides corresponding visual output on the display panel 141 through the I/O subsystem 170 according to user input.
  • the touch panel 142 and the display panel 141 are used as two independent components to realize the input and input functions of the terminal device 100, but in some embodiments, the touch panel 142 and the display panel 141 may be combined.
  • the input and output functions of the terminal device 100 are realized by integration.
  • the terminal device 100 may also include at least one sensor 150, such as a light sensor, a motion sensor, and other sensors.
  • the light sensor may include an ambient light sensor and a proximity sensor.
  • the ambient light sensor can adjust the brightness of the display panel 141 according to the brightness of the ambient light, and the proximity sensor can close the display panel 141 when the terminal device 100 is moved to the ear. And/or backlight.
  • the accelerometer sensor can detect the magnitude of acceleration in various directions (usually three-axis), and can detect the magnitude and direction of gravity when it is stationary.
  • the terminal device 100 can also be configured with other sensors such as gyroscope, barometer, hygrometer, thermometer, infrared sensor, etc., here No longer.
  • the audio circuit 160, the speaker 161, and the microphone 162 may provide an audio interface between the user and the terminal device 100.
  • the audio circuit 160 can transmit the converted signal of the received audio data to the speaker 161, which is converted into a sound signal for output by the speaker 161; on the other hand, the microphone 162 converts the collected sound signal into a signal, which is received by the audio circuit 160
  • the audio data is converted into audio data, and then the audio data is output to the RF circuit 108 to be sent to, for example, another mobile phone, or the audio data is output to the memory 120 for further processing.
  • the I/O subsystem 170 is used to control input and output external devices, and may include other device input controllers 171, sensor controllers 172, and display controllers 173.
  • one or more other input control device controllers 171 receive signals from other input devices 130 and/or send signals to other input devices 130, and other input devices 130 may include physical buttons (press buttons, rocker buttons, etc.) , Dial, slide switch, joystick, click wheel, optical mouse (optical mouse is a touch-sensitive surface that does not display visual output, or an extension of the touch-sensitive surface formed by a touch screen).
  • the other input control device controller 171 may be connected to any one or more of the above-mentioned devices.
  • the display controller 173 in the I/O subsystem 170 receives signals from the display screen 140 and/or sends signals to the display screen 140. After the display screen 140 detects the user input, the display controller 173 converts the detected user input into an interaction with the user interface object displayed on the display screen 140, that is, human-computer interaction is realized.
  • the sensor controller 172 may receive signals from one or more sensors 150 and/or send signals to one or more sensors 150.
  • the processor 180 is the control center of the terminal device 100. It uses various interfaces and lines to connect various parts of the entire mobile phone, runs or executes software programs and/or modules stored in the memory 120, and calls data stored in the memory 120. , Perform various functions of the terminal device 100 and process data, so as to monitor the mobile phone as a whole.
  • the processor 180 may include one or more processing units; preferably, the processor 180 may integrate an application processor and a modem processor, where the application processor mainly processes the operating system, user interface, application programs, etc. , The modem processor mainly deals with wireless communication. It can be understood that the foregoing modem processor may not be integrated into the processor 180.
  • the terminal device 100 also includes a power source 190 (such as a battery) for supplying power to various components.
  • a power source 190 such as a battery
  • the power source may be logically connected to the processor 180 through a power management system, so that functions such as charging, discharging, and power consumption can be managed through the power management system.
  • the terminal device 100 may also include a camera, a Bluetooth module, etc., which will not be repeated here.
  • the uniform temperature plate 200 may be located inside the terminal device 100 and has heat conduction with the heating element inside the terminal device, that is, the heat source.
  • the heating elements inside the terminal device 100 include, but are not limited to, the processor 180, the power supply 190, and other circuit components.
  • the heat source inside the terminal device is mainly the processor , Power supply or arithmetic circuit, etc.
  • the temperature equalization plate 200 may directly contact the processor 180 or other circuits, or may achieve indirect heat conduction through materials or structures with good thermal conductivity.
  • the temperature equalization plate 200 and the processor 180 may be connected by thermally conductive glue or thermally conductive silicone grease.
  • the processor 180 may be a heating element such as a CPU, a GPU, an FPGA, a baseband chip, or an MCU.
  • the terminal device 100 may also be provided with a middle frame 102, and the temperature equalizing plate 200 may be connected to the middle frame 102 of the terminal device 100 by embedding or the like, so as to conduct heat through heat conduction or the like. To the middle frame 102.
  • the temperature equalization plate 200 can be directly connected to the middle frame 102 in contact, or indirectly connected through thermally conductive glue or thermally conductive silicone grease or the like.
  • the uniform temperature plate 200 is also connected to other heat dissipation devices, and conducts heat to other heat dissipation devices to realize heat dissipation.
  • the terminal device 100 further includes a housing 101 and other different components.
  • the housing 101 and the middle frame 102 may be connected together, so as to jointly serve as a supporting and fixing structure of the terminal device 100.
  • the housing 101 can have heat conduction with the middle frame 102 and the uniform temperature plate 200, or a thermal convection environment can be formed between the internal space of the housing 101 and the uniform temperature plate 200.
  • the temperature equalizing plate 200 can absorb the heat from the internal heat source of the terminal device such as the processor 180 and then release it into the outside air through the housing 101, so as to dissipate heat for the terminal device 100.
  • the terminal device includes a heat source and a temperature equalizing plate, and the equalizing plate and the heat source have heat conduction; wherein, the equalizing plate includes a first cover plate, a second cover plate and a capillary structure, and the first cover plate and the second cover plate
  • the equalizing plate includes a first cover plate, a second cover plate and a capillary structure, and the first cover plate and the second cover plate
  • the capillary structure is arranged in the accommodating cavity together, and the capillary structure is provided with a first cavity through which steam can pass. Since the first cavity does not occupy space in the thickness direction of the uniform temperature plate, the overall thickness of the uniform temperature plate can be reduced, thereby facilitating the overall thinning of the uniform temperature plate and the terminal device where the uniform temperature plate is located.

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Abstract

本申请提供一种均温板及终端设备。本申请的均温板，包括第一盖板和第二盖板，第一盖板和第二盖板共同围成容置腔，容置腔内设置有毛细结构，且毛细结构的内部开设有第一空腔以供均温板内部的蒸汽通过。本申请的均温板具有较薄的厚度。

Description

均温板及终端设备
本申请要求于2019年09月06日提交中国专利局、申请号为201910843268.4、申请名称为“均温板及终端设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及散热领域，尤其涉及一种均温板及终端设备。
背景技术
终端产品如手机、平板和笔记本电脑等要求轻薄便携，同时具备高性能和良好的温度体验，因此产品的散热性能越来越重要。
目前，为了提高产品散热性能，越来越多的产品采用的均温板作为散热元件。均温板是通过工质气相和液相的转换而完成热量吸收和转移的装置。图1是一种现有的均温板的结构示意图。如图1所示，均温板包括上盖板1001、位于上盖板1001上的上毛细结构1002、下盖板1003以及位于下盖板1003上的下毛细结构1004。上盖板1001和下盖板1003共同拼成一个空腔，而上毛细结构1002和下毛细结构1004上下间隔的设置在空腔内，并注入工质，而上毛细结构1002和下毛细结构1004之间会形成供蒸汽(呈气态的工质)通过的蒸汽空间1005。热源的热量传入均温板内部后，工质会吸收热量而汽化，并带走大量热量；而蒸汽经由蒸汽空间1005流动至均温板远离热源的一侧，并接触到温度较低的均温板内壁后，会凝结成液态并释放热量，而凝结为液态的工质再通过上毛细结构1002或下毛细结构1004的毛细力作用再返回热源。这样循环不断的实现热量的传导。
为了适应终端产品的薄形化需求，均温板也需要达到较小的厚度。然而，由于均温板材料的厚度具有一定的加工极限，均温板的厚度难以进一步减小，影响了终端产品的整体厚度。
发明内容
本申请提供一种均温板及终端设备，具有较薄的厚度。
第一方面，本申请提供一种均温板，包括第一盖板和第二盖板，第一盖板和第二盖板共同围成容置腔，容置腔内具有毛细结构，且毛细结构的内部开设有可供蒸汽通过的第一空腔。这样通过将均温板内部的毛细结构设为一个整体，并在毛细结构内部开设第一空腔来作为蒸汽通道，以使呈气相的工质通过第一空腔实现流动和热交换循环，所以均温板在厚度方向上不再需要增加蒸汽流动的空间，可以使均温板的整体厚度得以减小，从而有利于均温板以及均温板所在的终端设备的整体薄形化。
可选的，毛细结构位于容置腔内部，且毛细结构与容置腔相互独立。这样毛细结构和均温板的其它结构相对独立，便于更换，使用上更加灵活。
可选的，第一盖板和第二盖板均与毛细结构的表面抵接。这样第一盖板和第二盖板之间的间距会近似等于毛细结构的厚度，而均温板的整体厚度仅相当于第一盖板、第二盖板 以及毛细结构三者的厚度相叠加，因而可以进一步减小均温板的厚度。
可选的，第一空腔贯穿毛细结构的相对设置的两个表面，其中，相对的两个表面分别与第一盖板以及第二盖板相对设置。这样通槽的上下两端均具有开口，且通槽内部的空间仍可以供蒸汽流动，第一空腔以及毛细结构的整体结构均较为简单，加工难度较低。
可选的，第一空腔和毛细结构的一个表面连通；或者，第一空腔位于毛细结构内部，并与毛细结构的表面互不联通。
可选的，第一空腔由均温板的热端延伸至均温板的冷端。由于均温板的热端和冷端之间具有较大的温差，蒸汽经由第一空腔而流经均温板的热端和冷端，可以让工质的蒸发和冷凝过程更为彻底，从而提高均温板的导热效率。
可选的，第一空腔包括第一延伸段和至少一个第二延伸段，第一延伸段由毛细结构的延伸至毛细结构的冷端，第二延伸段的位置与均温板冷端相对应；第二延伸段的第一端和第一延伸段连通，第二延伸段的第二端向第一延伸段侧方伸出。这样单个第一空腔即可覆盖毛细结构中较大的部分，使得毛细结构中的多个部位均能通过同一个第一空腔实现蒸汽的流动；同时，让第一空腔在对应均温板冷端区域的部分具有较快的热量交换速度，使蒸汽能够更快速的冷凝成为液态，从而提高散热效率。
可选的，第一空腔在沿自身长度方向上的不同位置具有不同的横截面面积。这样第一空腔为变截面结构，可以优化蒸汽在毛细结构中的流动方式，从而改善自身的流阻和换热能力等参数，使毛细结构具有更好的换热能力。
可选的，第一空腔的横截面的最小径向宽度大于或等于0.1mm。这样蒸汽在第一空腔内流速较快，且不易出现堵塞。
可选的，第一空腔的数量为至少一个。
可选的，第一空腔为多个，且多个第一空腔沿与第一盖板平行的方向间隔排布。这样多个第一空腔可以满足均温板的不同工况需求，同时，多个第一空腔沿着与均温板的厚度方向相互垂直的方向排列，因而第一空腔的数量只和毛细结构的宽度相关，而不会影响到毛细结构乃至整个均温板的厚度。
可选的，第一空腔设置在毛细结构的对应均温板热端的部位，并和毛细结构外部连通。这样由毛细结构回流到均温板热端的工质在受热并形成蒸汽后，可以直接第一空腔逸出到毛细结构的外侧，工质在均温板内部的热循环过程较为顺畅，提高了均温板的导热和散热能力。
可选的，第一空腔为在毛细结构的对应均温板热端的部位开设的孔或者凹槽。
可选的，第一空腔在沿毛细结构延伸方向上的最大尺寸小于或等于2mm。这样第一空腔在垂直于毛细结构延伸方向的横截面也会具有较小的尺寸，因而会占用毛细结构中较小比例的区域，从而降低了第一空腔对毛细结构自身内部工质流动速度的影响，保证了均温板具有较好的导热以及热循环效率。
可选的，第一盖板的面向毛细结构的一面设置有支撑部；支撑部的端部与毛细结构的表面抵接，或者，支撑部的端部与第二盖板抵接。这样即使第一盖板较薄，在支撑部的支撑下也不易产生变形，可以提升均温板的结构强度和刚性，避免均温板发生变形、凹陷等现象。
可选的，支撑部为由第一盖板向毛细结构伸出的支撑柱。由于支撑柱的柱状结构具有 较小的横截面，因此能够有效降低第一盖板的重量，并减少占用体积，或者是在支撑柱侧方形成较大的空间。
可选的，支撑部的数量为多个，且多个支撑部间隔设置在第一盖板上。这样可以利用多个支撑部适应不同面积和厚度的第一盖板，保证第一盖板得到稳固支撑。
可选的，毛细结构和第一盖板的板面之间具有可供蒸汽通过的第二空腔。这样由于第二空腔的存在，使得均温板内具有了更多供蒸汽流动的通道，从而提高了均温板内的热循环速度，均温板具有较高的导热和散热效率。
可选的，第二盖板的面向毛细结构的一面设置有凹槽，毛细结构设置在凹槽内。这样第一盖板可以盖设在凹槽的槽口上，从而与第二盖板共同围成中空的容置腔，而毛细结构即可被设置在凹槽内，且凹槽的槽壁围设在毛细结构周围。
可选的，毛细结构和凹槽的侧方槽壁之间具有间隙，以在毛细结构和凹槽的侧方槽壁之间形成可供蒸汽通过的第三空腔。第三空腔6也可以用于供工质汽化所形成的蒸汽通过，同时，由于第三空腔和毛细结构并排设置，所以第三空腔同样不会影响到均温板的整体厚度，从而让均温板保证薄形化的同时，能够提高其内部工质的热循环速度，改善均温板的传热和散热效率。
可选的，毛细结构形成于容置腔的腔壁上。
可选的，毛细结构位于第一盖板和/或第二盖板的表面。
可选的，容置腔为密闭腔体，且容置腔具有注液口。这样均温板的工质可以通过注液口注入容置腔内部，并通过自身的汽化和液化等相变而吸收及释放热量，从而实现均温板的导热和散热。
可选的，毛细结构的形成方式可以包括以下至少一种：编织、烧结、刻槽。
第二方面，本申请提供一种终端设备，包括热源和如上所述的均温板，均温板和热源具有热传导。这样通过将均温板内部的毛细结构设为一个整体，并在毛细结构内部开设第一空腔来代替现有的蒸汽通道，以使呈气相的工质通过第一空腔实现流动和热交换循环，所以均温板在厚度方向上不再需要留出蒸汽通道的空间，可以使均温板的整体厚度得以减小，从而有利于均温板以及终端设备的整体薄形化。
可选的，终端设备还包括壳体，均温板与壳体具有热传导。这样均温板可以在吸收处理器等终端设备内部热源的热量之后，将其通过壳体释放到外界空气中，从而为终端设备进行散热。
本申请的均温板及终端设备。均温板包括第一盖板、第二盖板和毛细结构，第一盖板和第二盖板共同围成容置腔，毛细结构设置在容置腔内，且毛细结构的内部开设有可供蒸汽通过的第一空腔。由于第一空腔在均温板的厚度方向上并不占用空间，所以均温板的整体厚度得以减小，从而有利于均温板以及均温板所在的终端设备的整体薄形化。
附图说明
图1是一种现有的均温板的结构示意图；
图2a是本申请实施例提供的均温板的第一种结构的截面示意图；
图2b是本申请实施例提供的均温板的第二种结构的截面示意图；
图3是本申请实施例提供的均温板的俯视图；
图4是本申请实施例提供的均温板中第一种第一空腔的结构示意图；
图5是本申请实施例提供的均温板中第二种第一空腔的结构示意图；
图6是本申请实施例提供的均温板中第三种第一空腔的结构示意图；
图7是本申请实施例提供的另一种均温板的结构示意图；
图8是本申请实施例提供的一种终端设备的结构示意图；
图9是图8中的终端设备为手机时内部部分结构框图。
附图标记说明：
1-第一盖板；2-第二盖板；3-毛细结构；4-容置腔；5-第二空腔；6-第三空腔；10-热端；20-冷端；11-支撑部；21-凹槽；31-第一空腔；311-第一延伸段；312-第二延伸段；100-终端设备；101-壳体；102-中框；110-RF电路；120-存储器；130-其它输入设备；140-显示屏；141-显示面板；142-触控面板；150-传感器；160-音频电路；161-扬声器；162-麦克风；170-I/O子系统；171-其它输入设备控制器；172-传感器控制器；173-显示控制器；180-处理器；190-电源；200-均温板；
1001-上盖板；1002-上毛细结构；1003-下盖板；1004-下毛细结构；1005-蒸汽空间。
具体实施方式
为了便于理解本申请的技术方案，以下先行对本申请所涉及到的一些技术名词进行解释和说明。
均温板(Vapor Chamber，VC)：又称均热板，是一个内壁具有微细结构，并注入工质的真空腔体。均温板的工作原理与热管大致相同，其具体包括了传导、蒸发、对流、凝固四个主要步骤。当热源产生的热量通过热传导进入均温板内，均温板中靠近热源位置的工质吸收热量后会迅速汽化，同时带走大量热量。再利用蒸汽的潜热性，当均温板内蒸汽由高压区扩散至低压区(即低温区)，蒸汽接触到温度较低的内壁时，会迅速凝结成液态并释放出热能；凝结成液态的工质通过微细结构(毛细结构)的毛细力作用返回热源处，由此完成一次热传导循环，形成一个工质汽液两相并存的双向循环系统。目前均温板的常用材质为铜，其内部的工质为纯水。
毛细结构：由于液体的液面具有表面张力，当浸润液体在毛细孔中时，其液面是凹形的,这样液体液面会对下面的液体施加拉力,使液体沿着毛细孔的管壁向上移动。由此引发毛细现象。而毛细结构可以包括多个毛细孔或者类似于毛细孔的细微凹槽等结构。这样当液体工质进入毛细结构中的毛细孔或者细微凹槽之后，便会通过毛细作用而流动至毛细孔的另外一端，完成工质的转移和返回。
图2a是本申请实施例提供的均温板的第一种结构的截面示意图。图2b是本申请实施例提供的均温板的第二种结构的截面示意图。图3是本申请实施例提供的均温板的俯视图。如图2和图3所示，本实施例提供的均温板，包括第一盖板1、第二盖板2和毛细结构3，第一盖板1和第二盖板2共同围成容置腔4，毛细结构3设置在容置腔4内，且毛细结构3的内部开设有可供蒸汽通过的第一空腔31。
其中，均温板可以应用于终端设备或者其它电子设备的散热结构中，用于将终端设备的处理器等热源所散发的热量传导至其它位置，从而为终端设备实现散热降温。具体的，均温板可以为厚度较小的板状结构，而均温板的外部结构包括第一盖板1和第二盖板2等 组成部分。第一盖板1和第二盖板2可以共同围成中空的容置腔4，此时，第一盖板1和第二盖板2会形成均温板的相对两个板面。而该容置腔4内即可用于设置工质以及毛细结构3，并通过工质在容置腔4内的气相和液相转换来实现热量的吸收、释放和转移。而第一盖板1或者是第二盖板2作为均温板的外部壳体，可以直接或间接的与热源接触并实现热传导，从而完成对热源所产生热量的吸收和散热。其中，工质可以填充在容置腔4的内部空间中，且部分呈液态的工质留置在毛细结构3内部。
其中，当第一盖板1和第二盖板2作为均温板的结构部件与热源进行热传导时，可以是直接让其与热源贴合并接触，或者也可以使其通过其它导热件与热源实现间接的热传导。其中，示例性的，可以让第二盖板2与热源进行热传导，而第一盖板1则位于均温板的远离热源的一侧。
为了通过工质的气相和液相转换实现热量的快速传递，均温板的容置腔4内具有毛细结构3。毛细结构3中会形成多个沿某一方向延伸的毛细孔或者是等效于毛细孔的凹槽等结构。这样液体工质即可在毛细作用下，从毛细孔的一端流动到毛细孔的另一端，而工质中所吸收和储存的热量也会在毛细孔的这两端之间转移。具体的，因为均温板可以从热源处吸收热量，并将热量转移到均温板的远离热源的一端而释放，此时，均温板的靠近热源的一端即为均温板的热端10(或者称受热端)，而远离热源的一端为均温板的冷端20(或者称冷凝端)。而毛细孔的延伸方向即可为由均温板的热端10向冷端20延伸。
其中，因为均温板为厚度较小的板状结构，所以第一盖板1和第二盖板2所围成的容置腔4也会为厚度较小的腔体。此时，与容置腔4的形状相适应，毛细结构3整体也会呈现出类似于薄片的形状。此时，毛细结构3的相对设置的两个面中，其中一个面会面向第一盖板1，可以定义为毛细结构3的上表面；而毛细结构3的另一个面面向第二盖板2，该面可以定义为毛细结构3的下表面。
当均温板中的工质吸收热源处的热量后，原先呈液相的工质会发生转变为气相，此时工质的体积发生膨胀，并占用较大的空间。而为了让呈气相的工质，也就是工质所形成的蒸汽流动到均温板的冷端20而冷凝放热，在容置腔4中需要具有可供蒸汽流动通过的空间。然而，毛细结构3内部是通过较小的孔隙来让工质流动，而当均温板的整体厚度较薄时，毛细结构3的上表面与第一盖板1之间，或者毛细结构3的下表面与第二盖板2之间可能只存在较小的间隙。这样在毛细结构3的上下表面与两个盖板之间无法形成足够大的通道，以便使蒸汽由均温板的热端10流向冷端20。此时，为了保证蒸汽的正常流动和循环，在毛细结构3的内部设置有第一空腔31，这样工质在受热蒸发后所形成的蒸汽即可进入第一空腔31，并由第一空腔31流动至均温板的其它部位以实现冷凝放热。
此时，由于第一空腔31位于毛细结构3的内部，所以第一空腔31并没有在均温板的厚度方向上占用均温板的内部空间。和现有均温板中设置两层毛细结构3，并依靠两层毛细结构3在厚度方向上的间隙形成蒸汽通道的结构相比，蒸汽不再需要通过盖板和毛细结构3之间或者不同毛细结构3之间的间隙实现流动。这样即使毛细结构3的上下表面与两个盖板之间无法形成供蒸汽流动的通道，蒸汽依旧可以通过位于毛细结构3内部的第一空腔31抵达均温板的其它位置，并完成冷凝过程。
这样通过将均温板内部的毛细结构3设为一个整体，并在毛细结构3内部开设第一空腔31来代替现有技术中的蒸汽通道，以使呈气相的工质通过第一空腔31实现流动和热交 换循环。由于第一空腔31在均温板的厚度方向上并不占用空间，所以均温板在厚度方向上不再需要留出蒸汽通道的空间。此时，只要合理控制毛细结构3的厚度，即可让均温板的第一盖板1与第二盖板2之间形成较小的间距，并使均温板的整体厚度得以减小，从而有利于均温板以及均温板所在的终端设备的整体薄形化。
由于均温板中的第一空腔31可以具有不同的结构、形状和具体形式，为便于理解该方案，以下分别对毛细结构3、第一空腔31以及均温板的整体结构进行进一步详细说明。
其中，在均温板的容置腔4内设置毛细结构3时，毛细结构3可以是独立的部件，也可以和第一盖板1或者是第二盖板2为一体式结构。例如，可选的，也可以让毛细结构3形成于容置腔4的腔壁上。此时，毛细结构3并不是一个独立的结构或部件，而是依附于均温板上的其它结构，例如是第一盖板1或第二盖板2上。具体的，毛细结构3可以是通过在容置腔4的腔壁上形成或加工出毛细孔或者微型沟槽结构，并利用这些毛细孔或者微型沟槽来起到毛细作用。
当毛细结构3是形成于容置腔4的腔壁上的结构时，毛细结构可以位于第一盖板和第二盖板中的至少一者的表面。可以理解的是，毛细结构会位于第一盖板的面向第二盖板的一侧，或者是第二盖板的面向第一盖板的一侧表面，这样毛细结构会位于第一盖板或第二盖板的内侧，也就是容置腔的内部。
或者作为另一种可选的方式，毛细结构3可以设置在容置腔4内，且毛细结构3和容置腔4的腔壁相互独立，从而使得毛细结构3、第一盖板1和第二盖板2相互独立。此时，毛细结构3可以放置在容置腔4内，并采用各种可拆卸或者不可拆卸的方式与容置腔4的腔壁进行固定。这样毛细结构3和均温板的其它结构相对独立，便于更换，使用上更加灵活。
以下如无特殊说明，均以毛细结构3独立设置在容置腔4内，且和容置腔4的腔壁相互分离为例进行说明。
其中，为了让均温板的厚度能够进一步减少，作为一种可选的实施方式，可以让第一盖板1和第二盖板2均与毛细结构3的表面抵接。
具体的，第一盖板1和毛细结构3的上表面之间，以及第二盖板2和毛细结构3的下表面之间仍可能会存在一定的空间，如果消除这些空间，并让第一盖板1和第二盖板2均与毛细结构3的表面呈紧密抵接的状态，则可以进一步减小均温板在厚度方向上的大小。此时，在均温板中，第一盖板1会和第二盖板2共同将毛细结构3夹持在其中，而毛细结构3的上表面和下表面分别会与容置腔4的腔壁抵接，这样第一盖板1和第二盖板2之间的间距会近似等于毛细结构3的厚度，而均温板的整体厚度仅相当于第一盖板1、第二盖板2以及毛细结构3三者的厚度相叠加，因而可以进一步减小均温板的厚度。
其中，需要说明的是，第一盖板1和第二盖板2可以为多种不同的结构及形状，所以相应的，第一盖板1或者第二盖板2与毛细结构3的表面抵接的位置也不同。在一种可选的方式中，第一盖板1或第二盖板2上可以有凸出部或者凹槽等结构。示例性的，可以在第一盖板1上设置有有凸出部等结构。此时，毛细结构3的表面可以与凸出部或者凹槽的顶部相抵，以使第一盖板1和毛细结构3的表面仍然处于紧密抵接的状态。
具体的，因为均温板整体具有较小的厚度，第一盖板1如果为平板状结构，当第一盖板1和毛细结构3的上表面存在间隙时，若第一盖板1外表面的中部区域受到外界作用力， 由于第一盖板1自身厚度较薄，结构刚性不足，可能会出现下凹变形现象，这样可能会损坏均温板的整体结构。因此，均温板中的第一盖板1上可以设置有支撑结构，以维持较薄的第一盖板1不发生变形。在一种可选的实施方式中，如图2a所示，本实施例中的均温板，所包含的第一盖板1，其面向毛细结构3的一面还设置有支撑部11。
其中，支撑部11的端部可以与毛细结构3的表面抵接，或者是与第二盖板2抵接。这样支撑部11的端部得到毛细结构3或者第二盖板2的支撑后，即可对整个第一盖板1的结构进行支撑。
具体的，支撑部11可以和第一盖板1相互独立设置，或者是和第一盖板1一体成型。其中，为了简化制造工艺，可以通过机加工等方式在第一盖板1的面向毛细结构3的形成支撑部11，而支撑部11的端部既可以和毛细结构3的表面相互抵接，当第一盖板1的外表面受到外界作用力时，支撑部11就可以将第一盖板1上所受到的力传递至毛细结构3，从而让毛细结构3以及第二盖板2等部件分担第一盖板1上所受到的力。维持第一盖板1不发生变形。
具体的，支撑部11可以为多种不同的形状，例如支撑部11可以是在第一盖板1的面向毛细结构3的一面所设置的面积较大的凸块，并利用凸块的端面与毛细结构3相抵，或者支撑部11也可以是第一盖板1上所伸出的柱状凸起，并利用柱状凸起的端部与毛细结构3的表面抵接。
此外，根据第一盖板1的厚度以及面积的不同，支撑部11的数量可以为一个，也可以为多个。例如作为一种可选的设置方式，第一盖板1上的支撑部11的数量可以为多个，且多个支撑部11间隔设置在第一盖板1上。
其中，多个支撑部11可以在第一盖板1上均匀排布，也可以是根据第一盖板1的结构强度特性呈不均匀排布。同时，所有支撑部11可以具有相同的大小和形状，也可以是不同支撑部11具有不同的大小和形状。
其中，作为支撑部11的一种可选的结构，支撑部11可以为由第一盖板1向毛细结构3伸出的支撑柱。这样支撑柱的一端连接至第一盖板1的板面，而另一端和毛细结构3的表面或者是第二盖板2的内侧底面抵接，从而对第一盖板1进行支撑。其中，由于支撑柱的柱状结构具有较小的横截面，因此能够有效降低第一盖板1的重量，并减少占用体积，或者是在支撑柱侧方形成较大的空间。
具体的，支撑柱可以有多种不同的截面形状，例如支撑柱的截面可以为矩形、菱形、圆形等不同形状，此处不加以限制。
当支撑部11的端部和第二盖板2抵接时，支撑部11会穿过毛细结构3。此时，毛细结构3上可以相应的设置有避让空间，从而供支撑部11穿过。具体的，毛细结构3的避让空间可以为通孔等形式，且通孔的截面形状可以和支撑部11的端部形状相匹配，例如同样可以为矩形、菱形、圆形的不同形状。
当第一盖板1上设置有支撑部11，且支撑部11的端部与毛细结构3抵接时，在支撑部11的支撑下，毛细结构3和第一盖板1的板面之间会具有一定间距。同时，由于均温板的容置腔4由第一盖板1和第二盖板2共同围成，所以在毛细结构3和第一盖板1的板面之间会形成较为密闭的区域。该区域即可用于供均温板内的蒸汽流动。
此时，在一种可选的结构中，由于支撑部11的支撑，在毛细结构3的上表面和第一盖 板1的板面之间可以形成可供蒸汽通过第二空腔5。第二空腔5的功能和结构均可以和第一空腔31类似，均为用于形成蒸汽通道，以供工质蒸发后所形成的蒸汽由均温板的热端10流动至均温板的冷端20。这样由于第二空腔5的存在，使得均温板内具有了更多供蒸汽流动的通道，从而提高了均温板内的热循环速度，使得均温板具有较高的导热和散热效率。
其中，第二空腔5的上下两侧腔壁可以分别由第一盖板1的板面以及毛细结构3的上表面所形成。而第二空腔5的侧方腔壁可以由支撑部11所围成，也可以由第一盖板1或者第二盖板2所形成。
其中，在第一种可选的第二空腔结构中，第一盖板1的边缘可以向第二盖板2伸出，并与第二盖板2的相应部位连接，而第一盖板1的边缘即可围成第二空腔5的侧方腔壁。此时，第一盖板1的边缘会向第二盖板2凸出，并形成一类似凹槽或凹腔的形状，而第一盖板1的边缘即可形成凹槽或凹腔的侧壁，而支撑部11会收容于凹槽或凹腔的内部。此外，第二空腔5的部分侧壁也可以由支撑部11所构成。
在第二种可选的第二空腔结构中，第一盖板1整体仍然为平直的板面，而第二盖板2会具有凹槽或腔体等结构，并让第一盖板1盖设在凹槽或腔体的开口上，以形成封闭的容置腔4。此时，第二盖板2会具有朝第一盖板1伸出的侧壁等结构，而第二盖板2的侧壁即可围成第二空腔5的侧方腔壁。同样的，第二空腔5的部分侧壁也可以由支撑部11所构成。
此外，第二空腔5也可以具有其它结构，例如第二空腔5的侧壁也可以由完全由支撑部11所构成，此时支撑部11可以围成封闭的形状，而支撑部11的内侧即可形成第二空腔5的侧壁。第二空腔5的可能的结构和实现方式较多，此处不再赘述。
此外，为了容置毛细结构3，第一空腔31相应的可以具有多种不同的结构。例如可选的，第一空腔31在垂直于自身延伸方向上可以具有不同的结构和截面形式。在第一空腔31的一种可选的结构中，第一空腔31可以贯穿毛细结构3的相对设置的两个表面，其中，相对的两个表面分别与第一盖板1以及第二盖板2相对设置。
具体的，如上所述，毛细结构3的分别与第一盖板1和第二盖板2相对设置的两个面可以分别定义为毛细结构3的上表面和下表面。而第一空腔31可以贯穿毛细结构3的上表面和下表面，从而在毛细结构3上形成上下两面均贯通的通槽，如图2a所示。这样通槽的上下两端均具有开口，且通槽内部的空间仍可以供蒸汽流动，第一空腔31以及毛细结构3的整体结构均较为简单，加工难度较低。
此外，容易理解的是，第一空腔31也可以并不贯穿毛细结构3的相对设置的两个表面，而是仅和毛细结构3的其中一个表面连通，如图2b所示。
其中，当第一空腔31贯穿毛细结构3的上下表面时，第一空腔31可以具有不同的截面形状。例如第一空腔31在垂直于其延伸方向上的横截面可以为矩形，或者是梯形、菱形、圆弧形等不同形状。本实施例中，第一空腔31的横截面形状可以为矩形。
而为了让第一空腔31形成供蒸汽流动的通道，第一空腔31可以具有多种不同的形式和整体布局结构：
图4是本申请实施例提供的均温板中第一种第一空腔的结构示意图。如图2至图4所示，在第一空腔31的第一种可选的布局方式中，可以让毛细结构3中的第一空腔31由均 温板的热端10延伸至均温板的冷端20。
具体的，此时，第一空腔31可以为沿着均温板的热端10一直向均温板的冷端20延伸的单条通道状结构。由于均温板需要通过工质的蒸发和冷凝等相变过程，将热源的热量传导至远离热源的部位并散发出去，所以蒸汽需要由均温板的靠近热源的部位流动至远离热源的部位，才能实现热量的传递。
此时，第一空腔31的延伸区域会经过均温板的热端区域以及均温板的冷端区域。而毛细结构3中的工质在热端区域接收热源的热量后，会快速蒸发，并通过第一空腔31流动至均温板的冷端区域，最后在温度较低的冷端区域进行冷凝放热。由于均温板的热端10和冷端20之间具有较大的温差，蒸汽会经由第一空腔31而流经均温板的热端10和冷端20，可以让工质的蒸发和冷凝过程更为彻底，从而提高均温板的导热效率。
其中，根据均温板自身形状以及和热源相对位置的不同，均温板上的热端10与冷端20可以具有不同的相对位置。例如，均温板可以是一端为热端10，与热端10相对的另一端为冷端20；也可以是均温板的中部区域为热端10，而边缘区域为冷端20；或者均温板的热端10和冷端20也可以为本领域技术人员常用的其它形式和布局，此处不加以限制。
当利用第一空腔31导通均温板的冷端20与热端10，使蒸汽在均温板内部流动时，根据均温板的不同使用工况和尺寸大小，可以让第一空腔31的数量为一个或者一个以上。
其中，作为可选的实施方式，可以让第一空腔31的数量为多个，且多个第一空腔31沿与第一盖板1平行的方向间隔排布。此时，多个第一空腔31沿着与均温板的厚度方向相互垂直的方向排列，因而第一空腔31的数量只和毛细结构3的宽度相关，而不会影响到毛细结构3乃至整个均温板的厚度。
可以理解的是，当多个第一空腔31沿着与第一盖板1平行的方向间隔排布时，由于第一空腔31的数量较多，所以蒸汽能够沿着多个不同第一空腔31而流动至均温板的冷端20。在单个第一空腔31的横截面积有限的情况下，可以通过增加第一空腔31数量的方式，提高蒸汽的流动速度，并使得毛细结构3中的更多部位能够流通蒸汽，从而增加均温板的导热效率，使均温板具有较好的导热和散热能力。
需要说明的是，当第一空腔31为多个时，多个第一空腔31可以是等间隔排布，也可以以不同的间隔排布；而不同第一空腔31也可以具有相同或者不同的长度及横截面形状。具体的，第一空腔31的排布间隔、长度以及横截面形状等参数均可以根据均温板的使用场景和需求而进行相应调整，此处不再赘述。
图5是本申请实施例提供的均温板中第二种第一空腔的结构示意图。如图5所示，在第一空腔31的第二种可选的布局方式中，可以让第一空腔31包括第一延伸段311和至少一个第二延伸段312，且第二延伸段312位于毛细结构3的对应均温板冷端20的区域；第一延伸段311由毛细结构3的热端10延伸至毛细结构3的冷端20，第二延伸段312的第一端和第一延伸段连通，第二延伸段312的第二端向第一延伸段311侧方伸出。该种形状便于毛细结构3中的蒸汽流通以及热量交换。
此时，第一空腔31不再是简单的单条通道，而是具有分支的复杂结构。其中，单个第一空腔31中，不仅包括有第一延伸段311，也包括和第一延伸段311连接，以作为第一延伸段311的分支的第二延伸段312，这样单个第一空腔31即可覆盖毛细结构3中较大的部分，使得毛细结构3中的多个部位均能通过同一个第一空腔31实现蒸汽的流动；同时， 让第一空腔31在对应均温板冷端区域的部分具有第二延伸段312，能够加速第一空腔31在该部分的热量交换速度，当蒸汽进入到对应均温板冷端区域的第二延伸段312后，能够更快速的冷凝成为液态，并通过毛细结构3回流至毛细结构3的热端10，从而提高散热效率。其中，第一延伸段311和第二延伸段312可以为直线段也可以为弯曲段。本实施例中，以第一延伸段311和第二延伸段312均为直线段为例进行说明。
其中，为了增大第一空腔31在毛细结构3中的覆盖面积，第二延伸段312可以为多个，且分别向第一延伸段311的不同侧方伸出。其中，第二延伸段312的伸出方向可以和第一延伸段311的延伸方向垂直，也可以和第一延伸段311的延伸方向之间具有锐角等夹角。且第二延伸段为多个时，不同第二延伸段312的伸出方向可以相同也可以不同。
可选的，由于第一延伸段311可以对应设置有多个第二延伸段312，所以相应的，第一延伸段311的横截面面积可以大于第二延伸段312的横截面面积，以便让蒸汽具有足够的流动速度。
当第一空腔31整体沿着毛细结构3的长度方向延伸时，作为一种可选的方式，第一空腔31在沿自身长度方向上的不同位置具有不同的横截面面积。这样第一空腔31为变截面结构，可以优化蒸汽在毛细结构3中的流动方式，从而改善自身的流阻和换热能力等参数，使毛细结构3具有更好的换热能力。
此外，可以理解的是，作为另一种可选的方式，也可以让第一空腔31在沿自身长度方向上处处横截面面积均相同，以使蒸汽在第一空腔31内具有较为均一的流动速度。
为了保证蒸汽在第一空腔31内具有一定的流动速度，避免第一空腔31内发生堵塞等现象，可选的，在前述第一种布局方式以及第二种布局方式中，第一空腔31整体沿着毛细结构3的长度方向延伸时，第一空腔31的横截面的最小径向宽度可以大于或等于0.1mm。这样蒸汽在第一空腔31内流速较快且不易出现堵塞。
此外，和第一种布局方式类似，第一空腔31具有第一延伸段和至少一个第二延伸段时，第一空腔31的数量也可以为多个，且第一空腔31为多个时，多个第一空腔31沿与第一盖板1平行的方向间隔排布。
图6是本申请实施例提供的均温板中第三种第一空腔的结构示意图。如图6所示，在第一空腔31的第三种可选的布局方式中，第一空腔31可以设置在毛细结构3的对应均温板热端10的部位，并和毛细结构3外部连通，以作为供蒸汽逸出热端10的出气空间。由于容置腔4内主要容置有毛细结构3，因而容置腔4内的液态工质在受热汽化时，毛细结构3容易形成阻碍，使蒸汽难以逸出到第一空腔31。而采用上述第一空腔31的结构，由毛细结构3回流到均温板热端10的工质在受热并形成蒸汽后，可以直接第一空腔31逸出到毛细结构3的外侧，工质在均温板内部的热循环过程较为顺畅，提高了均温板的导热和散热能力。
具体的，第一空腔31设置在毛细结构3的对应均温板热端10的部位，并和毛细结构3的外部连通时，可以有多种不同的结构形状、位置及设置方式。其中，作为一种可选的结构，此时第一空腔31可以为在毛细结构3上开设的孔或者凹槽。孔的孔口或者是凹槽的槽口均可以面向毛细结构3的外侧，并和毛细结构3外部的空间连通，从而便于蒸汽由这些孔或者凹槽中逸出。或者，第一空腔31也可以为通孔或者通槽的形式。
可选的，第一空腔31为毛细结构3上开设的孔或者凹槽时，孔和凹槽的数量可以为 一个或者多个。且孔或者凹槽为多个时，多个孔或者多个凹槽之间会间隔排布，以覆盖毛细结构3上尽可能多的区域，从而让毛细结构3上位于均温板热端10的部位和区域均能够快速逸出蒸汽，提高均温板内部热循环速度，保证均温板具有良好的导热和散热效率。
其中，由于在毛细结构3的对应均温板热端10的位置开设与毛细结构3外部连通的第一空腔31时，第一空腔31会占用毛细结构3在该位置的一部分毛细孔的空间。如果毛细孔所在的空间被占用过多，可能会影响到毛细结构3自身内部的工质流动，让均温板内部的热循环速度较慢甚至堵塞。为了避免上述现象，可选的，此时第一空腔31在沿毛细结构3延伸方向上的最大尺寸可以小于或等于2mm。
其中，第一空腔31可以通过孔或者凹槽的形式存在，而孔的孔径或者凹槽的宽度可以小于或等于2mm。这样第一空腔31在垂直于毛细结构3延伸方向的横截面也会具有较小的尺寸，因而会占用毛细结构3中较小比例的区域，从而降低了第一空腔31对毛细结构3自身内部工质流动速度的影响，保证了均温板具有较好的导热以及热循环效率。
此外，在构成均温板时，第一盖板1和第二盖板2也可以具有多种不同的形状及结构，以下对第一盖板1和第二盖板2的其它可能的结构进行具体说明。
图7是本申请实施例提供的另一种均温板的结构示意图。如图7所示，该均温板的整体结构以及工作原理和前述实施例中的均温板类似，均包括第一盖板1、第二盖板2以及毛细结构3等组成部分，故此处不再赘述。该均温板和前述均温板的不同之处在于，所包含的第一盖板1的面向毛细结构3的一面并未设置凸起，而是采用了形状较为简洁的平板状结构。
具体的，第一盖板1整体可以为一个平板状结构，其上下表面均为平面，也就是说，第一盖板1的面向毛细结构3的一面，其表面依然可以为平整的平面，这样第一盖板1整体结构较为简单。
在其中一种可选的方式中，当第一盖板1和毛细结构3的表面抵接时，毛细结构3的表面可以与第一盖板1的内侧板面相抵接，从而让毛细结构3和第一盖板1的内侧板面整体均贴合在一起。
而为了和第一盖板1共同构成均温板的整个壳体结构，第二盖板2也可以具有多种不同的结构和类型。例如作为一种可选的方式，第二盖板2的面向毛细结构3的一面可以设置有凹槽21，毛细结构3设置在凹槽21内。
此时，第二盖板2上设置有凹槽21，且凹槽21的槽口朝向第一盖板1开设，这样第一盖板1可以盖设在凹槽21的槽口上，从而与第二盖板2共同围成中空的容置腔4，而毛细结构3即可被设置在凹槽21内，且凹槽21的槽壁围设在毛细结构3周围。
具体的，凹槽21的形状和大小可以和毛细结构3的尺寸及大小相匹配，例如是凹槽21和毛细结构3的形状近似，且凹槽21的尺寸稍大于毛细结构3的尺寸。这样毛细结构3可以方便的固定在凹槽21之中。
其中，可选的，毛细结构3和凹槽21的侧方槽壁之间可以具有间隙，以在毛细结构3和凹槽的侧方槽壁之间形成可供蒸汽通过的第三空腔6。
当凹槽21的宽度大于毛细结构3的宽度时，在毛细结构3和凹槽21的侧方槽壁之间可以形成较为明显的间隙或者空间，而该空间会沿着毛细结构3的侧壁延伸，从而形成沿毛细结构3中毛细孔长度方向延伸的第三空腔6。显然，由于第三空腔6与第一空腔31以 及第二空腔5具有相似的朝向及结构，所以第三空腔6也可以用于供工质汽化所形成的蒸汽通过。同时，由于第三空腔6位于毛细结构3和凹槽21的侧方槽壁之间，也就是和毛细结构3并排的位置，所以第三空腔6同样不会影响到均温板的整体厚度，从而让均温板保证薄形化的同时，能够提高其内部工质的热循环速度，改善均温板的传热和散热效率。
具体的，第三空腔6可以具有多种不同形状和设置方式。例如，第三空腔6可以位于毛细结构3的一侧，也可以位于毛细结构3的相对两侧，而第三空腔6的横截面积以及形状可以根据毛细结构3的侧方形状以及凹槽21的侧方槽壁形状而设置，只要能够保证蒸汽的正常流动即可，此处不加以限制。
此外，需要说明的是，本实施例中，为了列举供蒸汽(气态工质)流动的路径，在均温板中不但包括第一空腔31，同样也包括了第二空腔5和第三空腔6。而本领域技术人员可以理解，当均温板所面临的工况不同，或者均温板具有不同尺寸和结构时，均温板中仅可以包括第一空腔31，或者是包括第一空腔31和第二空腔5，再或者是包括第一空腔31和第三空腔6，此处并不加以限制。
同时，本领域技术人员可以理解的是，当第一空腔31和毛细结构3的表面外部连通时，第一空腔31实际上也可以和第二空腔5或者是第三空腔6连通，从而与第二空腔5或者是第三空腔6共同形成一个较大的腔体。而当毛细结构3和容置腔4的腔壁之间具有间隙时，分别位于毛细结构3不同侧的第二空腔5和第三空腔6也可以相互连通。具体的，如图7所示，第二空腔5和第三空腔6之间相互连通，且第一空腔31和第二空腔5也可以相互连通，从而使得第一空腔31、第二空腔5和第三空腔6共同形成一个腔体。此外，上述第一空腔31、第二空腔5和第三空腔6也可以是三者之间均相互连通，两两之间相互连通，或者完全相互独立的情况，只要各空腔能够提高均温板内部工质循环速度即可，此处不加以限制。
而为了将工质密封在均温板的内部，均温板的容置腔4可以为密闭腔体，且容置腔4具有注液口。其中，容置腔4可以由第一盖板1以及第二盖板2相互对接并密封而形成，而均温板的工质可以通过注液口注入容置腔4内部，并通过自身的汽化和液化等相变而吸收及释放热量，从而实现均温板的导热和散热。
其中，因为容置腔4由第一盖板1和第二盖板2共同拼合而成，所以在第一盖板1和第二盖板2的接合位置可以设置环状的密封边，以避免工质由第一盖板1和第二盖板2的接合部位流出。注液口设置在密封边的其中一边上，以作为注入工质和抽真空的位置。具体的，且可以单独设置在第一盖板1上、第二盖板2上或者是由第一盖板1和第二盖板2合围形成。其中，注液口的形式可以为预留的小型管口，或者是与盖板侧边平齐的孔道，再或者是预留的微孔等，其具体可以为本领域技术人员常用的注液口结构，此处不加以限制。本实施例中，第二盖板2上设置有用于注入工质和抽真空的注液口22。
此外，在毛细结构3中，可以通过多种不同方式形成毛细结构3中的毛细孔或者是类似的微槽，以下对毛细结构3的形成方式进行具体说明。
在一种可选的方式中，毛细结构3可以由线径较小的毛细丝编织而形成，此时，毛细丝毛细丝可以共同编织形成具有一定形状的毛细结构3，且在毛细结构3的内部形成可供液态的工质流动固定孔道或间隙。而毛细丝可以在靠近热源的区域以及远离热源的区域之间切断并挖槽，从而形成第一空腔31。其中，毛细丝的线径可以小于或等于0.05mm。
而在另一种可选的方式中，毛细结构3可以由粉末烧结而成。具体的，可以将粉末烧结为具有多孔结构的形态，从而构成毛细结构3的本体。其中，粉末可以为铜粉或镍粉，也可以为钛粉或者玻璃粉等金属或非金属材料，而粉末的最大直径可以小于0.01mm。第一空腔31可以在粉末烧结时通过设置治具而在毛细结构3内形成预留空间的方式而构成，也可以在烧结完成后，再通过二次加工的方式形成。此外，毛细结构3还可以采用电镀、喷涂等类似于粉末烧结的方式而形成。而本领域技术人员可以理解的是，上述通过粉末烧结、电镀、喷涂等手段形成毛细结构3的方式仅为举例说明，因而也可以通过其它本领域的成型手段形成毛细结构3，此处不加以限制。
在又一种可选的方式中，毛细结构3还可以是通过在本体上通过蚀刻、激光雕刻或者机加工等方式而刻成细微的沟槽，并利用细微沟槽来充当毛细结构3中的毛细孔作用。其中，可以通过设置单独的本体结构，并在本体结构上刻槽而形成具有细微沟槽的毛细结构3，也可是让第一盖板1或第二盖板2作为刻槽的本体，并通过在第一盖板1或第二盖板2的表面刻槽来形成可以供工质流动的毛细结构3。
此外，毛细结构3也可以通过本领域技术人员常用的其它方式形成，此处不再赘述。
本实施例中，均温板包括第一盖板、第二盖板和毛细结构，第一盖板和第二盖板共同围成容置腔，毛细结构设置在容置腔内，且毛细结构的内部开设有可供蒸汽通过的第一空腔。由于第一空腔在均温板的厚度方向上并不占用空间，所以均温板的整体厚度得以减小，从而有利于均温板以及均温板所在的终端设备的整体薄形化。
图8是本申请实施例提供的一种终端设备的结构示意图。如图8所示，本申请还提供一种终端设备100，包括热源和上述实施例所述的均温板200，均温板200和热源具有热传导。这样热源所散发出的热量可以通过均温板200传导到其它位置，从而实现对热源的散热。其中，均温板200的具体结构、功能以及工作原理均已在前述实施例中进行了详细说明，此处不再赘述。
本申请实施例涉及的终端设备100可以包括手机、平板电脑、个人数字助理(Personal Digital Assistant，PDA)、销售终端(Point of Sales，POS)、车载电脑等。
以终端设备100为手机为例，图9是图8中的终端设备为手机时内部部分结构框图。如图9所示，终端设备100包括射频(Radio Frequency，RF)电路110、存储器120、其它输入设备130、显示屏140、传感器150、音频电路160、I/O子系统170、处理器180、以及电源190等部件。本领域技术人员可以理解，图9中示出的手机结构并不构成对手机的限定，可以包括比图示更多或更少的部件，或者组合某些部件，或者拆分某些部件，或者不同的部件布置。本领域技术人员可以理解，显示屏140属于用户界面(User Interface，UI)，且终端设备100可以包括比图示或者更少的用户界面。
下面结合图9对终端设备100的各个构成部件进行具体的介绍：
RF电路110可用于收发信息或通话过程中，信号的接收和发送，特别地，将基站的下行信息接收后，给处理器180处理；另外，将设计上行的数据发送给基站。通常，RF电路包括但不限于天线、至少一个放大器、收发信机、耦合器、低噪声放大器(Low Noise Amplifier，LNA)、双工器等。此外，RF电路110还可以通过无线通信与网络和其它设备通信。所述无线通信可以使用任一通信标准或协议，包括但不限于全球移动通讯系统(Global System of Mobile communication，GSM)、通用分组无线服务(General Packet Radio  Service，GPRS)、码分多址(Code Division Multiple Access，CDMA)、宽带码分多址(Wideband Code Division Multiple Access,WCDMA)、长期演进(Long Term Evolution,LTE)、电子邮件、短消息服务(Short Messaging Service，SMS)等。
存储器120可用于存储软件程序以及模块，处理器180通过运行存储在存储器120的软件程序以及模块，从而执行终端设备100的各种功能应用以及数据处理。存储器120可主要包括存储程序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能所需的应用程序(比如声音播放功能、图象播放功能等)等；存储数据区可存储根据终端设备100的使用所创建的数据(比如音频数据、电话本等)等。此外，存储器120可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件、闪存器件、或其它易失性固态存储器件。
其它输入设备130可用于接收输入的数字或字符信息，以及产生与终端设备100的用户设置以及功能控制有关的键信号输入。具体地，其它输入设备130可包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆、光鼠(光鼠是不显示可视输出的触摸敏感表面，或者是由触摸屏形成的触摸敏感表面的延伸)等中的一种或多种。其它输入设备130与I/O子系统170的其它输入设备控制器171相连接，在其它设备输入控制器171的控制下与处理器180进行信号交互。
显示屏140可用于显示由用户输入的信息或提供给用户的信息以及终端设备100的各种菜单，还可以接受用户输入。具体的显示屏140可包括显示面板141，以及触控面板142。其中显示面板141可以采用LCD(Liquid Crystal Display，液晶显示器)、OLED(Organic Light-Emitting Diode,有机发光二极管)等形式来配置显示面板141。触控面板142，也称为触摸屏、触敏屏等，可收集用户在其上或附近的接触或者非接触操作(比如用户使用手指、触笔等任何适合的物体或附件在触控面板142上或在触控面板142附近的操作，也可以包括体感操作；该操作包括单点控制操作、多点控制操作等操作类型。)，并根据预先设定的程式驱动相应的连接装置。可选的，触控面板142可包括触摸检测装置和触摸控制器两个部分。其中，触摸检测装置检测用户的触摸方位、姿势，并检测触摸操作带来的信号，将信号传送给触摸控制器；触摸控制器从触摸检测装置上接收触摸信息，并将它转换成处理器能够处理的信息，再送给处理器180，并能接收处理器180发来的命令并加以执行。此外，可以采用电阻式、电容式、红外线以及表面声波等多种类型实现触控面板142，也可以采用未来发展的任何技术实现触控面板142。进一步的，触控面板142可覆盖显示面板141，用户可以根据显示面板141显示的内容(该显示内容包括但不限于，软键盘、虚拟鼠标、虚拟按键、图标等等)，在触控面板142上进行操作，触控面板142检测到在其上或附近的触摸操作后，通过I/O子系统170传送给处理器180以确定触摸事件的类型以确定用户输入，随后处理器180根据触摸事件的类型在显示面板根据用户输入通过I/O子系统170在显示面板141上提供相应的视觉输出。虽然在图2中，触控面板142与显示面板141是作为两个独立的部件来实现终端设备100的输入和输入功能，但是在某些实施例中，可以将触控面板142与显示面板141集成而实现终端设备100的输入和输出功能。
终端设备100还可包括至少一种传感器150，比如光传感器、运动传感器以及其它传感器。具体地，光传感器可包括环境光传感器及接近传感器，其中，环境光传感器可根据环境光线的明暗来调节显示面板141的亮度，接近传感器可在终端设备100移动到耳边时，关 闭显示面板141和/或背光。作为运动传感器的一种，加速计传感器可检测各个方向上(一般为三轴)加速度的大小，静止时可检测出重力的大小及方向，可用于识别手机姿态的应用(比如横竖屏切换、相关游戏、磁力计姿态校准)、振动识别相关功能(比如计步器、敲击)等；至于终端设备100还可配置的陀螺仪、气压计、湿度计、温度计、红外线传感器等其它传感器，在此不再赘述。
音频电路160、扬声器161，麦克风162可提供用户与终端设备100之间的音频接口。音频电路160可将接收到的音频数据转换后的信号，传输到扬声器161，由扬声器161转换为声音信号输出；另一方面，麦克风162将收集的声音信号转换为信号，由音频电路160接收后转换为音频数据，再将音频数据输出至RF电路108以发送给比如另一手机，或者将音频数据输出至存储器120以便进一步处理。
I/O子系统170用来控制输入输出的外部设备，可以包括其它设备输入控制器171、传感器控制器172、显示控制器173。可选的，一个或多个其它输入控制设备控制器171从其它输入设备130接收信号和/或者向其它输入设备130发送信号，其它输入设备130可以包括物理按钮(按压按钮、摇臂按钮等)、拨号盘、滑动开关、操纵杆、点击滚轮、光鼠(光鼠是不显示可视输出的触摸敏感表面，或者是由触摸屏形成的触摸敏感表面的延伸)。值得说明的是，其它输入控制设备控制器171可以与任一个或者多个上述设备连接。所述I/O子系统170中的显示控制器173从显示屏140接收信号和/或者向显示屏140发送信号。显示屏140检测到用户输入后，显示控制器173将检测到的用户输入转换为与显示在显示屏140上的用户界面对象的交互，即实现人机交互。传感器控制器172可以从一个或者多个传感器150接收信号和/或者向一个或者多个传感器150发送信号。
处理器180是终端设备100的控制中心，利用各种接口和线路连接整个手机的各个部分，通过运行或执行存储在存储器120内的软件程序和/或模块，以及调用存储在存储器120内的数据，执行终端设备100的各种功能和处理数据，从而对手机进行整体监控。可选的，处理器180可包括一个或多个处理单元；优选的，处理器180可集成应用处理器和调制解调处理器，其中，应用处理器主要处理操作系统、用户界面和应用程序等，调制解调处理器主要处理无线通信。可以理解的是，上述调制解调处理器也可以不集成到处理器180中。
终端设备100还包括给各个部件供电的电源190(比如电池)，优选的，电源可以通过电源管理系统与处理器180逻辑相连，从而通过电源管理系统实现管理充电、放电、以及功耗等功能。
尽管未示出，终端设备100还可以包括摄像头、蓝牙模块等，在此不再赘述。
本实施例的终端设备中，均温板200可以位于终端设备100内部，并和终端设备内部的发热元件，也就是热源之间具有热传导。其中，终端设备100内部的发热元件包括但不限于处理器180、电源190以及其它电路组成部分。
可选的，由于终端设备在工作时，其内部的处理器180、电源190或者其它芯片和电路具有较大的功耗，因而也会产生较多热量，因而终端设备内部的热源主要是处理器、电源或者是运算电路等。而均温板200可以与处理器180或者其它电路直接接触，也可以通过导热性较好的材料或结构实现间接热传导。示例性的，均温板200和处理器180之间可以通过导热胶或者导热硅脂连接。
在一种可能的实施方式中，处理器180可以为CPU、GPU、FPGA、基带芯片或者MCU 等发热元件。
在一种可选的实施方式中，终端设备100中还可以设置有中框102，而均温板200可以通过嵌入等方式与终端设备100的中框102连接，从而通过热传导等方式将热量传导至中框102上。
其中，均温板200可以和中框102之间直接接触连接，也可以通过导热胶或导热硅脂等间接连接。此外，均温板200也和其它散热装置连接，并将热量传导至其它散热装置来实现散热。
在一种可能的实施方式中，终端设备100还包括壳体101等不同组成部分。其中，壳体101可以和中框102连接在一起，从而共同作为终端设备100的支撑和固定结构。而壳体101可以与中框102以及均温板200之间具有热传导，或者是通过壳体101的内部空间与均温板200之间形成热对流环境。这样均温板200可以在吸收处理器180等终端设备内部热源的热量之后，将其通过壳体101释放到外界空气中，从而为终端设备100进行散热。
本实施例中，终端设备包括热源和均温板，均温板和热源具有热传导；其中，均温板包括第一盖板、第二盖板和毛细结构，第一盖板和第二盖板共同围成容置腔，毛细结构设置在容置腔内，且毛细结构的内部开设有可供蒸汽通过的第一空腔。由于第一空腔在均温板的厚度方向上并不占用空间，所以均温板的整体厚度得以减小，从而有利于均温板以及均温板所在的终端设备的整体薄形化。

Claims (26)

  1. 一种均温板，其特征在于，包括第一盖板和第二盖板，所述第一盖板和所述第二盖板共同围成容置腔，所述容置腔内具有毛细结构，且所述毛细结构的内部开设有可供蒸汽通过的第一空腔。
  2. 根据权利要求1所述的均温板，其特征在于，所述毛细结构位于所述容置腔内部，且所述毛细结构与所述容置腔相互独立。
  3. 根据权利要求2所述的均温板，其特征在于，所述第一盖板和所述第二盖板均与所述毛细结构的表面抵接。
  4. 根据权利要求1-3任一项所述的均温板，其特征在于，所述第一空腔贯穿所述毛细结构的相对设置的两个表面，其中，相对的两个所述表面分别与所述第一盖板以及所述第二盖板相对设置。
  5. 根据权利要求1-3任一项所述的均温板，其特征在于，所述第一空腔和所述毛细结构的一个表面连通；或者，所述第一空腔位于所述毛细结构内部，并与所述毛细结构的表面互不联通。
  6. 根据权利要求1-5任一项所述的均温板，其特征在于，所述第一空腔由所述均温板的热端延伸至所述均温板的冷端。
  7. 根据权利要求6所述的均温板，其特征在于，所述第一空腔包括第一延伸段和至少一个第二延伸段，所述第一延伸段由所述毛细结构的延伸至所述毛细结构的冷端，所述第二延伸段的位置与所述均温板冷端相对应；所述第二延伸段的第一端和所述第一延伸段连通，所述第二延伸段的第二端向所述第一延伸段侧方伸出。
  8. 根据权利要求6或7所述的均温板，其特征在于，所述第一空腔在沿自身长度方向上的不同位置具有不同的横截面面积。
  9. 根据权利要求4-8任一项所述的均温板，其特征在于，所述第一空腔的横截面的最小径向宽度大于或等于0.1mm。
  10. 根据权利要求4-9任一项所述的均温板，其特征在于，所述第一空腔的数量为至少一个。
  11. 根据权利要求10所述的均温板，其特征在于，所述第一空腔为多个，且多个所述第一空腔沿与所述第一盖板平行的方向间隔排布。
  12. 根据权利要求1-5任一项所述的均温板，其特征在于，所述第一空腔设置在所述毛细结构的对应所述均温板热端的部位，并和所述毛细结构外部连通。
  13. 根据权利要求12所述的均温板，其特征在于，所述第一空腔为在所述毛细结构的对应所述均温板热端的部位开设的孔或者凹槽。
  14. 根据权利要求12或13所述的均温板，其特征在于，所述第一空腔在沿所述毛细结构延伸方向上的最大尺寸小于或等于2mm。
  15. 根据权利要求1-14任一项所述的均温板，其特征在于，所述第一盖板的面向所述毛细结构的一面设置有支撑部；
    所述支撑部的端部与所述毛细结构的表面抵接，或者，所述支撑部的端部与所述第二盖板抵接。
  16. 根据权利要求15所述的均温板，其特征在于，所述支撑部为由所述第一盖板向 所述毛细结构伸出的支撑柱。
  17. 根据权利要求15或16所述的均温板，其特征在于，所述支撑部的数量为多个，且多个所述支撑部间隔设置在所述第一盖板上。
  18. 根据权利要求15-17任一项所述的均温板，其特征在于，所述毛细结构和所述第一盖板的板面之间具有可供蒸汽通过的第二空腔。
  19. 根据权利要求1-18任一项所述的均温板，其特征在于，所述第二盖板的面向所述毛细结构的一面设置有凹槽，所述毛细结构设置在所述凹槽内。
  20. 根据权利要求19所述的均温板，其特征在于，所述毛细结构和所述凹槽的侧方槽壁之间具有间隙，以在所述毛细结构和所述凹槽的侧方槽壁之间形成可供蒸汽通过的第三空腔。
  21. 根据权利要求1所述的均温板，其特征在于，所述毛细结构形成于所述容置腔的腔壁上。
  22. 根据权利要求21所述的均温板，其特征在于，所述毛细结构位于所述第一盖板和/或所述第二盖板的表面。
  23. 根据权利要求1-22任一项所述的均温板，其特征在于，所述容置腔为密闭腔体，且所述容置腔具有注液口。
  24. 根据权利要求1-23任一项所述的均温板，其特征在于，所述毛细结构的形成方式包括以下至少一种：编织、烧结、刻槽。
  25. 一种终端设备，其特征在于，包括热源和权利要求1-24任一项所述的均温板，所述均温板和所述热源具有热传导。
  26. 根据权利要求25所述的终端设备，其特征在于，还包括壳体，所述均温板与所述壳体具有热传导。
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