Mobile phone with improved stacking structure

Abstract

The invention discloses a mobile phone with an improved stacking framework, the mobile phone is provided with a multi-section structure and a 3D soaking plate, the multi-section structure comprises an upper section, a middle section and a lower section, and the upper section, the middle section and the lower section are configured to form an improved stacking structure which is optimized in collaboration and convenient to manufacture with a transverse part and a longitudinal part of the 3D soaking plate. The mobile phone further comprises an improved stacking structure which forms optimized cooperation with devices such as the middle frame and / or the longitudinal rib plates of the mobile phone and is convenient to manufacture. By implementing the embodiment of the invention, an improved stacking framework which is optimized and coordinated and convenient to manufacture can be obtained, a novel heat dissipation framework meeting complicated stacking is realized, and a mobile phone which is reasonable and efficient in space utilization and enhanced in heat dissipation and computing power performance is obtained.

Description

Technical Field

[0001] This disclosure belongs to the technical field of portable terminals, and particularly relates to a mobile phone with an improved stacking architecture. Background Art

[0002] The heat generated per unit area of electronic devices has risen rapidly. Achieving rapid heat dissipation and effective temperature control in high-heat areas such as chips is of great significance for ensuring high-performance computing and the stable operation of devices such as laptops and mobile phones.

[0003] Especially for mobile phones, they are developing towards the trend of ultra-thin overall thickness and tightly stacked internal components. This also requires internal heat dissipation structures such as heat pipes, vapor chambers (VCs), and graphene heat sinks to develop towards miniaturization, integration, and ultra-thinness. Among them, the vapor chamber, with its two-dimensional heat dissipation dimension in the form of a thin flat plate, can better meet the needs of mobile phone ultra-thinness and stacking, becoming a key heat dissipation component for mobile phones such as smartphones or gaming phones, and continuing to develop towards the trend of increasing ultra-thinness (thickness as low as 0.4 mm or less) and large area.

[0004] Generally speaking, the overall thickness of smartphones in 2024 mainly concentrates on 8 - 9 mm. Manufacturers such as OPPO have successively launched ultra-thin mobile phones, with thicknesses even lower than 4.8 mm. The thinnest part of the unfolded Huawei Mate XT Master is only about 3.6 mm. The thickness of mobile phones shows a gradually decreasing trend, and each manufacturer successively uses ultra-thinness as a selling point. However, the problem brought by ultra-thinness is the small internal space of the fuselage, making it difficult to solve a series of problems such as heat dissipation, photography, and battery life.

[0005] Currently, the thinnest thickness of mass-produced vapor chambers in the industry is 0.35 mm. The thickness of mobile phone batteries mainly ranges from 3 - 5 mm. The vapor chamber and the battery in the mobile phone are stacked, which means that reducing the thickness of either one is beneficial to the ultra-thinness of the whole mobile phone. Generally, the thinner the vapor chamber, the weaker its heat dissipation performance, and the thinner the battery thickness, the smaller the battery capacity. Some examples of existing mobile phones are as follows. For example, the Honor 100 Pro mobile phone uses a wide-area stainless steel VC for heat dissipation, with a thickness as thin as 0.35 mm and an area of 4674 mm 2 ... Also, for example, the OnePlus Ace 3 Pro has an overall thickness of 8.8 mm, a large-capacity battery thickness of 5.51 mm, and a vapor chamber area of 9126 mm 2 ... Also, for example, the Lenovo Legion Y70 mobile phone uses a vapor chamber with a super-large area of 5047 mm2 and a thickness of 0.55 mm to quickly dissipate heat, and also has a 10-layer graphite heat dissipation architecture, with a total heat dissipation area of 36938 mm 2 ...

[0006] However, the thinner the heat spreader is flattened, the more significantly the volume of the closed cavity decreases, which will result in a very small amount of working fluid that can be filled in; and during operation, the flow path of the gas phase working fluid is narrow, and the latent heat transfer is not smooth; the heat spreader also has a trend of large-area development, but the larger the area, the worse the anti-bending performance of the mobile phone may be, so the area of ​​the heat spreader should not be too large. In addition, existing research calculations have further shown that when the thickness of the cavity in the heat spreader is reduced to 0.30mm or less, due to the size effect, there will be a large space competition between the gas phase at the evaporation end migrating to the condensation end and the liquid phase that infiltrates in the opposite direction through the liquid absorption core layer. This is mainly manifested in that the transmission resistance of the gas phase and the liquid phase in the opposite direction will increase significantly (that is, the gas and liquid phases are mutually blocked), and the liquid film plunger phenomenon is easy to occur, and then evaporation and reflux are inhibited, and the heat transfer performance of the ultra-thin heat spreader is significantly deteriorated.

[0007] It can be seen that with the increase in power density and ultra-thinness of mobile phones, the internal space is constantly decreasing. The internal space of mobile phones shows highly integrated, dense, close and stacked components, and the thickness and internal space of the heat spreader are also constantly compressed. As a result, there is no spare space inside the mobile phone.

[0008] In addition, existing mobile phones are usually designed to have a certain degree of sealing and waterproofness, which requires that the heat generated by the target heat source in the mobile phone, such as the chip, be diffused to a wider space in the inner cavity as much as possible. The ultra-thin heat spreader can efficiently diffuse the accumulated heat to a wider area in the mobile phone, and then conduct the accumulated heat to the external atmosphere through the frame, bottom cover and screen. Moreover, the heat dissipation pressure of mobile phones with built-in ultra-thin heat spreaders is still relatively large, so it is also necessary to use a larger area of ​​graphene heat dissipation film in combination. However, thermal imaging of existing mobile phones in working state shows that the heat accumulation in the target heat source area is still significantly greater than other areas away from the vicinity of the target heat source.

[0009] The conventional heat spreader is a gas-liquid phase change heat transfer device that can quickly and evenly transfer the heat of the target heat source. Its thermal conductivity exceeds that of any known metal and has been widely used in electronic devices, especially mobile phones. On the one hand, according to the encyclopedia entry of the heat spreader, the heat spreader is a flat plate in appearance, with a cover on the top and bottom that fits tightly together, and copper columns supporting it. The upper and lower copper sheets of the heat spreader are made of oxygen-free copper, and pure water is usually used as the working fluid. The capillary structure is made of copper powder sintering or copper mesh technology. As long as the heat spreader maintains its flat plate characteristics, there is no restriction on the shape of the outer contour depending on the environment of the heat dissipation module used, and there is no restriction on the placement angle when using it.

[0010] On the other hand, according to the encyclopedia entry of the vapor chamber, a vapor chamber is a vacuum cavity with a fine structure on its inner wall, usually made of copper. The working principle of the vapor chamber is the same as that of the heat pipe, including four main steps: conduction, evaporation, convection, and solidification. It utilizes the phase change process in which the medium evaporates at the hot end and condenses at the cold end (i.e., utilizes the latent heat of vaporization and condensation of the liquid). Specifically, when heat is conducted from the heat source to the evaporation area, the coolant in the cavity starts to vaporize when heated in a low-vacuum environment. At this time, it absorbs heat energy and expands rapidly in volume. The gaseous cooling medium quickly fills the entire cavity. When the gaseous working medium contacts a relatively cold area, condensation occurs. The heat accumulated during evaporation is released through the condensation phenomenon. The condensed coolant will return to the evaporation heat source through the capillary channels of the micro-structure, and this operation will repeat continuously in the cavity.

[0011] Therefore, in the face of the trend of thinner and thinner electronic devices, especially mobile phones, the industry's demand for a heat dissipation architecture that meets high-performance and thinness is becoming increasingly urgent. However, it is becoming increasingly difficult to ensure high heat dissipation performance in the heat dissipation system under the trend of thinner and thinner, and how to achieve a favorable integration of improved heat dissipation devices has become a technical problem to be solved urgently. Summary of the Invention

[0012] In view of this, the purpose of the present disclosure is to provide an improved mobile phone to overcome the deficiencies of the related prior art, enabling the mobile phone to adapt to the development trend of ultra-thin overall thickness, and improving the problems of sacrificing the heat dissipation performance of the vapor chamber, manufacturing difficulty and cost, and the problem of mutual conflict in the position space between the heat dissipation components and other complex stacked devices under this development trend of ultra-thinness.

[0013] To achieve the purpose of the present disclosure, the following technical solutions are adopted:

[0014] The present disclosure provides a mobile phone with an improved stacking architecture, characterized in that the mobile phone includes:

[0015] Having a multi-segment structure, the multi-segment structure includes an upper segment with a first component, a middle segment with a second component, and a lower segment. The first component includes a first stacked device layer and a first outer frame. The second component includes a plurality of second batteries or a second battery and a second outer frame on the same layer, or a second battery and a second stacked device layer and a second outer frame on the same layer; a 3D vapor chamber, which is divided into an evaporation end and a condensation end; wherein:

[0016] The evaporation end is configured to be distributed in the upper section and perpendicular to the thickness direction of the mobile phone; the condensation end is configured to have an L-shaped communication cavity, the L-shaped communication cavity has a vertical plate cavity and a horizontal plate cavity, the horizontal plate cavity is parallel to the evaporation end, and the condensation end corresponding to the vertical plate cavity is located within a plate-shaped cavity formed by a certain distance between the same-layer and adjacent components within the mobile phone;

[0017] The plate-shaped cavity further includes: being configured to be located in the middle section and clamped between the multiple second batteries included in the second component or between any two of the second battery, the second stacked device layer, and the second outer frame, and the plate-shaped cavity is configured to be parallel to the length of the mobile phone, or being configured to be located in the upper section and clamped between the first stacked device layer included in the first component and the first outer frame, and the plate-shaped cavity is parallel to the length direction of the mobile phone, or the plate-shaped cavity is configured to be located between the upper section and the middle section or between the middle section and the lower section, and the plate-shaped cavity is parallel to the width direction of the mobile phone;

[0018] The 3D vapor chamber further includes: a transverse portion and a longitudinal portion, the longitudinal portion is the portion of the condensation end corresponding to the vertical plate cavity, the transverse portion is the portion of the 3D vapor chamber except the longitudinal portion, the evaporation end and the horizontal plate cavity of the L-shaped communication cavity are both included in the transverse portion, and the transverse portion is perpendicular to the thickness direction of the mobile phone.

[0019] In one embodiment, the mobile phone further includes: a middle frame within the mobile phone, having a hollowed-out area or a recessed area; the hollowed-out area or the recessed area is configured to seat the transverse portion;

[0020] The longitudinal portion is distributed on the bottom surface of the transverse portion; the top surface of the transverse portion is parallel to the bottom surface, and the top surface faces the screen panel of the mobile phone.

[0021] The area of the bottom surface corresponding to the evaporation end is configured to be heat-coupled to a target heat source within the mobile phone, and the target heat source is located below the area of the bottom surface corresponding to the evaporation end;

[0022] The middle frame and the battery are both stacked perpendicular to the thickness direction of the mobile phone.

[0023] Optionally, the mobile phone further includes: a first longitudinal rib plate for strengthening the overall structural strength of the mobile phone between the upper section and the middle section, and / or a second longitudinal rib plate for strengthening the overall structural strength of the mobile phone between the middle section and the lower section; wherein, the first longitudinal rib plate and the second longitudinal rib plate are both parallel to the width direction and the thickness direction of the mobile phone;

[0024] There is no overlapping projection between the longitudinal portion and the first longitudinal rib plate and / or the second longitudinal rib plate of the mobile phone, and they are located on the same layer.

[0025] In some embodiments, the mobile phone further includes: the plate-shaped cavity is configured to be located between the upper section and the middle section, and the plate-shaped cavity is parallel to the width direction of the mobile phone; wherein,

[0026] The plate-shaped cavity further includes: being clamped between the upper side surface of the first longitudinal rib plate and the lower side surface of the first stacked device layer included in the upper section, or being clamped between the lower side surface of the first longitudinal rib plate and the upper side surface of the second battery included in the middle section.

[0027] In some other embodiments, the mobile phone further includes: the plate-shaped cavity is configured to be located between the middle section and the lower section, and the plate-shaped cavity is parallel to the width direction of the mobile phone; wherein,

[0028] The plate-shaped cavity further includes: being clamped between the upper side surface of the second longitudinal rib plate and the lower side surface of the second battery included in the middle section, or being clamped between the lower side surface of the second longitudinal rib plate and the upper side surface of the third stacked device layer included in the lower section.

[0029] In still some other embodiments, the mobile phone further includes: the plate-shaped cavity is configured to be located in the middle section and is clamped between the multiple second batteries included in the second component; wherein,

[0030] The multiple second batteries are located on the same layer and are in a left-right or up-down relationship, and adjacent and spaced apart by a certain distance to form the plate-shaped cavity; the multiple are two.

[0031] In still some other embodiments, the mobile phone further includes: the thickness of the longitudinal portion is greater than the thickness of the transverse portion; or, the inner cavity of the transverse portion is configured as a loop type or a bifurcated U type.

[0032] Optionally, the mobile phone further includes: the transverse portion is configured to have a partition or a hollow window; wherein, the partition is coupled to the loop type; the hollow window is coupled to the loop type or the bifurcated U type.

[0033] Preferably, the 3D vapor chamber included in the mobile phone is obtained by the following manufacturing method, which includes the following steps S11 to S12:

[0034] S11. Prefabricate a flat vapor chamber, which is configured such that one end is an evaporation end and the other end is a condensation end. A preset area on the top or bottom surface of the evaporation end is configured to be coupled to the surface of a target heat source, and

[0035] the flat vapor chamber is configured to have a preset bending point, and the preset bending point coincides with an orthogonal plane passing through the flat vapor chamber, where:

[0036] the condensation end is distributed with the preset bending point, and the orthogonal plane does not pass through the evaporation end, or,

[0037] the condensation end is distributed with the preset bending point, and the orthogonal plane passes through the evaporation end, and the evaporation end and the condensation end on one side of the orthogonal plane are connected to each other, while the evaporation end and the condensation end on the other side are not connected to each other, or,

[0038] the preset bending point is distributed at the boundary between the condensation end and the evaporation end, and the orthogonal plane does not pass through the evaporation end;

[0039] S12. Bend the flat vapor chamber along the preset bending point to make the flat vapor chamber present two mutually perpendicular parts, and the two parts are respectively configured as the transverse part and the longitudinal part, so as to obtain the 3D vapor chamber corresponding to the transverse part and the longitudinal part.

[0040] Preferably, the manufacturing method of the 3D vapor chamber included in the mobile phone further includes: the thickness of the longitudinal part is greater than the thickness of the transverse part; or, the inner cavity of the transverse part is configured as a loop type or a bifurcated U type.

[0041] Preferably, the manufacturing method of the 3D vapor chamber included in the mobile phone further includes:

[0042] a first capillary structure core is provided in a first preset area on the inner wall surface of the housing of the transverse part, and the evaporation end is distributed with the first preset area, and the inner wall surface of the housing of the longitudinal part is configured to be flat, or provided with a groove structure, or subjected to hydrophilic treatment or hydrophobic treatment, or a second capillary structure core is provided in a second preset area, where the first capillary structure core is coupled to the groove structure or the second capillary structure core; or,

[0043] In the first preset area on the inner wall surface of the housing of the horizontal part, a first capillary structure core is provided, and in the second preset area, a first groove structure is provided. The evaporation end is distributed in the first preset area. The first groove structure is coupled to the first capillary structure core. And the inner wall surface of the housing of the vertical part is configured to be flat or provided with a second groove structure or subjected to hydrophilic treatment or hydrophobic treatment, or a second capillary structure core is provided in the third preset area, wherein the first capillary structure core is coupled to the second groove structure or the second capillary structure core, and the first groove structure is coupled to the second groove structure or the second capillary structure core.

[0044] In another embodiment of the mobile phone disclosed in the present disclosure, the mobile phone further includes: the vertical part and the horizontal part form a T-shaped communication plate cavity; the L-shaped communication cavity is included in the T-shaped communication plate cavity.

[0045] As can be seen from the above, the beneficial effects are as follows:

[0046] The improved mobile phone provided by the present disclosure has a multi-section structure and a 3D vapor chamber. The upper section, middle section and lower section included in the multi-section structure are configured to form an optimized cooperation and easy-to-manufacture staggered stacking structure with the horizontal part and the vertical part of the 3D vapor chamber. It also includes an improved stacking structure that forms an optimized cooperation and is easy to manufacture with devices such as the middle frame and / or longitudinal rib plates of the mobile phone. Compared with the layer-by-layer stacking architecture of the prior art, implementing the embodiments of the present application can obtain an optimized cooperation and easy-to-manufacture staggered stacking structure, realize a new heat dissipation architecture that meets the misaligned stacking of complex structure devices, and obtain a mobile phone with reasonable and efficient space utilization, enhanced heat dissipation and computing power performance.

[0047] This mobile phone can adapt to the development trend of ultra-thin overall thickness. By improving the optimized cooperation stacking of the internal space and built-in devices, it expands the stacking cooperation methods and scenarios of the position space and posture between the vapor chamber of the mobile phone and the built-in devices, thereby improving the mess of the internal stacked devices and the mutual conflict of the position space, avoiding the mutual conflict problem between the ultra-thin of the horizontal part and the improvement of the heat dissipation temperature control performance, and overcoming the mutual conflict problem of the space position between the vertical part and the built-in devices such as the longitudinal rib plates. The embodiments of the present application also have the ability to further reduce the thickness of the current vapor chamber to 0.30 mm or less.

[0048] At the same time, for the 3D vapor chamber in this mobile phone, a manufacturing method different from the prior art is also disclosed, which is simpler and more controllable, has fewer operation steps, better yield, higher repeatability, higher reliability, lower cost and is more suitable for automated equipment. Compared with the vapor chamber in the existing mobile phone, the 3D vapor chamber in this mobile phone expands the structure and stacking scenarios of the vapor chamber, and reasonably and efficiently realizes that the 3D vapor chamber can be highly integrated into the mobile phone to achieve high-performance heat dissipation in multiple scenarios, and has better manufacturing potential.

[0049] More features and advantages of the present disclosure will be described in detail in the following detailed implementation section. Description of the Drawings

[0050] Figure 1-1 A top - view perspective cross - sectional view of Mobile Phone Embodiment 1 of the present disclosure with an improved stacking architecture is shown;

[0051] Figure 1-2 A top - view perspective cross - sectional view of Mobile Phone Embodiment 2 of the present disclosure with an improved stacking architecture is shown;

[0052] Figure 1-3 A top - view perspective cross - sectional view of Mobile Phone Embodiment 3 of the present disclosure with an improved stacking architecture is shown;

[0053] Figures 2-1 to 2-5 A schematic structural view of the flat vapor chamber in Step S11 of Manufacturing Method Embodiment 1 of the 3D vapor chamber included in the mobile phone of the present disclosure with an improved stacking architecture is shown;

[0054] Figure 3 A top - view structural view of the flat vapor chamber in Step S11 of Manufacturing Method Embodiment 2 of the 3D vapor chamber included in the mobile phone of the present disclosure with an improved stacking architecture is shown;

[0055] Figure 4 A top - view structural view of the flat vapor chamber in Step S11 of Manufacturing Method Embodiment 3 of the 3D vapor chamber included in the mobile phone of the present disclosure with an improved stacking architecture is shown;

[0056] Figure 5-1 A top - view structural view of the flat vapor chamber in Step S11 of Manufacturing Method Embodiment 4 of the 3D vapor chamber included in the mobile phone of the present disclosure with an improved stacking architecture is shown;

[0057] Figure 5-2 A top - view structural view of the flat vapor chamber in Step S11 of Manufacturing Method Embodiment 5 of the 3D vapor chamber included in the mobile phone of the present disclosure with an improved stacking architecture is shown;

[0058] Figure 6 A top - view structural view of the flat vapor chamber in Step S11 of Manufacturing Method Embodiment 6 of the 3D vapor chamber included in the mobile phone of the present disclosure with an improved stacking architecture is shown.

[0059] Description of reference numerals: 0 - mobile phone; 1 - upper section; 2 - middle section; 3 - lower section; 10 - evaporation end; 20 - condensation end; 30 - preset bending point; 40 - hollow window; 50 - partition; 60 - first heat source distribution area; 70 - battery; 80 - second heat source distribution area; 100 - horizontal part; 200 - vertical part; AA' - cross-section position. Detailed implementation manners

[0060] In order to make the objectives, technical solutions and beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. All other embodiments obtained by those of ordinary skill in the art in the technical field of the present invention without creative efforts based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0061] Please refer to Figure 1-1 , which shows a top-view perspective cross-sectional view of Embodiment 1 of a mobile phone with an improved stacking structure according to the present disclosure. Specifically, the 3D vapor chamber built in the mobile phone 0 is obtained by the manufacturing method. The evaporation end of the 3D vapor chamber in the mobile phone 0 is distributed in the upper section 1, the horizontal part 100 is distributed in the upper section 1 and the middle section 2, and the vertical part 200 is distributed in the middle section 2.

[0062] Figure 1-1 The 3D vapor chambers built in the mobile phones in sub-diagrams (a), (b), (d), (e), (f), (h), (j), (k) correspond to the feature of "the condensation end is provided with the preset bending point, and the orthogonal plane does not pass through the evaporation end" in step S11 and are obtained through step S21. The 3D vapor chambers built in the mobile phones in the other sub-diagrams (c), (g), (l), (m) correspond to the feature of "the condensation end is provided with the preset bending point, and the orthogonal plane passes through the evaporation end, and the evaporation end on one side of the orthogonal plane is connected to the condensation end, while the evaporation end on the other side is not connected to the condensation end" in step S11 and are obtained through step S21.

[0063] In addition Figure 1-1In FIGS. (a), (b), (c), (d), (e), (f), (g), (l), and (m), the built-in 3D vapor chamber of the mobile phone has a longitudinal portion 200 whose extending direction is parallel to the length direction of the mobile phone and perpendicular to the width direction of the mobile phone; in FIGS. (h), (j), and (k), the built-in 3D vapor chamber of the mobile phone has a longitudinal portion 200 whose extending direction is parallel to the width direction of the mobile phone and perpendicular to the length direction of the mobile phone. Among them, the three virtual line segments in FIG. (c) are respectively a preset bending portion 30, which forms an inner periphery (and / or outer periphery) capable of accommodating the device layer in the mobile phone after steps S11 and S12.

[0064] Please refer to Figure 1-2 , which shows a top-view perspective cross-sectional view of Embodiment 2 of the mobile phone of the present disclosure. Specifically, the built-in 3D vapor chamber of the mobile phone 0 is obtained by the manufacturing method, and the evaporation ends of the 3D vapor chamber of the mobile phone 0 are distributed in the upper section 1, and the longitudinal portion 200 is distributed in the middle section 2.

[0065] Relative to Figure 1-1 the built-in 3D vapor chamber in the mobile phone, Figure 1-2 in FIGS. (a) to (l), partition plates 50 are additionally provided, and the partition plates 50 are used to configure the inner cavity of the transverse portion into a loop type. In FIG. (m), the inner cavity of the transverse portion is configured into a bifurcated U type.

[0066] Please refer to Figure 1-3 , which shows a top-view perspective cross-sectional view of Embodiment 3 of the mobile phone with an improved stacking architecture of the present disclosure. Specifically, the built-in 3D vapor chamber of the mobile phone 0 is obtained by the manufacturing method, and the evaporation ends of the 3D vapor chamber of the mobile phone 0 are distributed in the upper section 1, and, as shown in FIGS. (a), (b), (c), and (d), the longitudinal portion 200 is distributed in the boundary area between the upper section 1 and the middle section 2, or as shown in FIGS. (e), (f), and (g), the longitudinal portion 200 is also distributed in the upper section 1, or as shown in FIG. (h), the longitudinal portion 200 is distributed in the middle section 2.

[0067] Specifically, as shown in Figure 1-1 , Figure 1-2 , Figure 1-3 shown, it includes: mobile phone 0, upper section 1, middle section 2, lower section 3; transverse portion 100, longitudinal portion 200; first heat source distribution area 60 such as the area fitting the chip or memory; battery 70; partition plate 50; second heat source distribution area 80 such as the area fitting the camera. Among them, the shown area of the first heat source distribution area 60 may include one or more target heat sources, and the shown area of the battery 70 may include a single-cell or dual-cell battery, and the dual-cell battery can form a fast-charging performance in some designs.

[0068] In Figure 1-1Chinese: (1) In sub - figures (a) and (b), the vertical part 200 is clamped and coupled between the inner surface of the left - hand side frame and the left - hand side surface of the battery 70. Heat can be transferred to the left - hand side frame. And to make full use of space and achieve better cross - layer heat transfer, the height of the vertical part 200 can be configured to be the same as the thickness of the battery 70. (2) Similarly, in sub - figure (e), the vertical part 200 is clamped and coupled between the inner surface of the right - hand side frame and the right - hand side surface of the battery 70. The orientation of the horizontal part 100 is more conducive to ensuring the overall bending strength of the mobile phone. (3) In sub - figures (c), (d), (f), (g), (l) and (m), the vertical part 200 is clamped and coupled within the cavity layer formed between two batteries 70. For example, it is more beneficial for mobile phones with dual - cell batteries, but the overall packaging of the existing dual - cell battery needs to be split into two packages and the left and right sides of the vertical part 200 are arranged separately. For another example, the thickness of the vertical part 200 is 2.0 mm, while the ultra - thin thickness of the horizontal part 100 is 0.4 mm. Obviously, the thickness of the vertical part 200 can be much larger than that of the horizontal part 100, providing a wider channel for the vapor to flow towards the distal end of the condensation end. At the same time, the vertical part 200 can inhibit the liquid film slugging phenomenon in the horizontal part 100. (4) In sub - figures (g), (h) and (k), the vertical part 200 is clamped and coupled between the upper side surface of the stacked device layer in the lower section 3 and the lower side surface of the battery 70. In sub - figure (h), the length of the left - hand cell of the dual - cell (i.e., dual - battery) is greater than that of the right - hand cell, and the width of the vertical part 200 in sub - figure (g) is greater than that of the vertical part 200 in sub - figure (h). The vertical part 200 can also provide the overall anti - bending ability of the mobile phone. (5) In sub - figures (l) and (m), the first heat - source distribution area 60, such as a chip, is located in the middle section 2. For example, in some Apple - brand mobile phones or some Lenovo Legion - brand gaming mobile phones, the vertical part 200 can be adapted to the side of the first heat - source distribution area 60. For example, the horizontal part 100 in sub - figure (m) has an inverted L - shaped orientation, and the heat generated by the first heat - source distribution area 60, such as a chip, can enter the vertical part 200 faster and then transfer the latent heat carried by the vapor more efficiently in the up - and - down directions.

[0069] In particular, in Figure 1-1In sub - figure (g), the orthogonal plane where the preset bending of the vertical part 200 is located will pass through the evaporation end. Therefore, the built - in 3D vapor chamber included in this mobile phone is configured to correspond to the feature of "the preset bending is distributed at the condensation end, the orthogonal plane passes through the evaporation end, and the evaporation end on one side of the orthogonal plane is connected to the condensation end, while the evaporation end on the other side is not connected to the condensation end" in step S11 and is obtained through step S21. The vapor chambers in the prior art do not have the structural characteristics of such a feature, so they cannot implement this feature in step S11 either. Otherwise, after step S11, it will cause the local evaporation end or all evaporation ends in the vicinity to form associated bends, and then the staggered stacking architecture in this application cannot be realized. That is, there is an issue of not reasonably and efficiently utilizing the position space of the complex components in the mobile phone and introducing new position space conflict problems. In addition, cases that meet such a situation also include, for example, Figure 1-1 sub - figures (g), (l), (m), etc.

[0070] In Figure 1-2 : Compared with the flat vapor chamber prepared in Figure 1-1 , they all have a hollow window 40 or a partition 50. Preferably, after the flat vapor chambers in sub - figures (a) to (l) are made into 3D vapor chambers, they form a loop - type vapor chamber in the working state. In the middle section 2 of sub - figure (l), the area except for the battery 70 can be a main circuit board of the same layer arranged on the left side of the vertical part 200, and a first heat source distribution area 60 such as a chip is installed on the main circuit board. Sub - figure (m) can obtain a longer vertical part 200, and its length is the same as that of the battery 70. The length of the horizontal part 100 on the left side of the vertical part 200 can be less than that of the horizontal part 100 on the right side, which can take into account the overall bending resistance of the mobile phone. This is because the shorter horizontal part 100 on the left side can reduce the number of hollow windows opened in the middle frame for placing the horizontal part 100, and the hollow window itself has the effect of enhancing the overall bending resistance of the mobile phone.

[0071] The middle frame is configured as a plate-like structure, located between the front panel (such as the screen panel) and the rear cover (such as the outer bottom protection cover) of the mobile phone, and they are parallel to each other. The middle frame is located inside the circumferential outer frame of the mobile phone, and the edge of the middle frame is fixedly connected to the inner wall surface of the circumferential outer frame. Thus, a cross-section in the width direction of the mobile phone can form an "H" shape. Moreover, the concave cavity on one side (i.e., the top side) of the middle frame is relatively shallow and is mainly used to place the screen panel (including the screen); while the concave cavity on the other side (i.e., the bottom side) is relatively deep and is mainly used to place the main board, the rear camera module, the battery, the secondary board, the vibration motor, etc., and may further include longitudinal rib plates. The transverse part of the 3D vapor chamber is configured to be arranged on the middle frame, such as the hollow area or the recessed area of the middle frame. In this way, the fixed bonding devices on both sides can directly contact the vapor chamber (or the middle frame) to achieve heat conduction and heat dissipation. In particular, the evaporation end included in the transverse part is thermally coupled to the target heat source, such as the SOC semiconductor device on the main board, so that two-dimensional heat transfer (from the evaporation end to the condensation end) can be realized in the plate cavity of the transverse part, and at the same time, the third-dimensional heat transfer from the plate cavity of the transverse part to the plate cavity of the longitudinal part can be realized. In addition, in some other examples, the middle frame further includes a circumferential outer frame. Preferably, the directly contacting surface is filled with a thermal interface material, such as thermal grease.

[0072] The functions and roles of the middle frame mainly include: (1) Component support: The middle frame of the mobile phone has the function of supporting and fixing components such as the screen, battery, and main board, and is the "skeleton" for fixing and installing various components inside the mobile phone (such as the battery, main board, camera, cable, sensor, microphone, earpiece, etc.). With the support and fixation of the middle frame, these components can maintain a stable operating state. (2) Protective function: The middle frame of the mobile phone can effectively protect the internal components of the mobile phone from external impacts and damages. When the mobile phone is subjected to external forces such as dropping or collision, the middle frame can absorb part of the impact force, thereby reducing the risk of damage to the internal components. In addition, the material of the middle frame of the mobile phone is usually metal or plastic. Metal middle frames, such as aluminum alloy profiles, have the advantages of high strength and good texture, while plastic middle frames have the characteristics of low cost and light weight. The processing process of the metal middle frame usually includes steps such as stamping of coil steel sheets and CNC precision machining, and these processing methods can ensure that the accuracy and structural strength of the middle frame meet the design requirements of the mobile phone.

[0073] In Figure 1-3In the Chinese description: In sub - figures (a) to (g), the prepared flat heat pipes are all located in the upper section 1 of the mobile phone 0. Among them, in sub - figures (a) to (d), the longitudinal parts 200 are clamped and coupled between the upper section 1 and the middle section 2. In sub - figures (e), (f) to (g), the longitudinal parts 200 are clamped and coupled between the right - hand side of the device pair stack and the inner surface of the right - hand side frame, enabling cross - layer heat transfer and transferring the obtained heat to the right - hand side frame. In sub - figure (h), the longitudinal part is located between the upper battery 70 and the lower battery 70, and the area of the upper battery 70 is larger than that of the lower battery 70, so as to transfer the obtained heat as far as possible to the distal end and achieve cross - layer heat transfer.

[0074] It can be understood that in some of the above - mentioned embodiments, when the mobile phone is used with the screen facing up, the longitudinal part of the 3D heat pipe will be located below the transverse part, and the vapor phase can migrate towards the longitudinal part. (Especially when the thickness of the longitudinal part is greater than that of the transverse part, the resistance of this migration in the longitudinal part will be less than that in the transverse part), and the condensed liquid phase in the longitudinal part can serve as a better liquid storage cavity than the transverse part, thereby providing continuous and stable capillary liquid supply. This can enhance the heat transfer performance of the 3D heat pipe and strengthen the suppression of the liquid film plugging phenomenon in the transverse part.

[0075] In some other embodiments above, when the mobile phone is used with the screen facing down, for example, when lying on one's back and looking up at the mobile phone, the longitudinal part of the 3D heat pipe will be located above the transverse part. This is beneficial for the rapid rise of the vapor phase towards the longitudinal part, and the condensed liquid phase in the longitudinal part can provide gravity - assisted reflux. This can significantly enhance the heat transfer performance of the 3D heat pipe and strengthen the suppression of the liquid film plugging phenomenon in the transverse part.

[0076] In a preferred mobile phone embodiment, the 3D heat pipe includes a transverse part and a longitudinal part. A middle frame inside the mobile phone has a hollowed - out area, and the hollowed - out area is configured to seat the transverse part; the area corresponding to the evaporation end on the bottom surface of the transverse part is configured to be heat - coupled to a target heat source inside the mobile phone; the target heat source is located below the area corresponding to the evaporation end on the bottom surface; the middle frame and the battery are both stacked in a direction perpendicular to the thickness direction of the mobile phone; and the longitudinal part is clamped and coupled within the plate - shaped cavity formed between two batteries that are in a left - right relationship and are distributed in parallel on the same layer inside the mobile phone. Optionally, the evaporation end of the transverse part and the target heat source are both located in the upper section of the mobile phone; the longitudinal part and the two batteries are both located in the middle section of the mobile phone.

[0077] The advantages are as follows. It is possible to achieve a mobile phone with an optimized and manufacturable staggered stacked structure, which meets the new heat dissipation stacked architecture composed of complex misaligned devices, and obtain a mobile phone with reasonable and efficient space utilization, enhanced heat dissipation and computing power performance, and has the ability to further reduce the thickness of the existing vapor chamber to 0.30 mm or less, that is, the thickness of the lateral part is further reduced to 0.30 mm or less. For example, if the thickness of the lateral part is configured to be 0.25 mm and the thickness of the longitudinal part is configured to be 2.00 mm, the thickness of the longitudinal plate cavity of the longitudinal part will be 8 times that of the lateral plate cavity of the lateral part. It can be seen that after the vapor is generated in the lateral plate cavity, it is easier to quickly enter the longitudinal plate cavity, and the migration resistance after entering the longitudinal plate cavity will be greatly reduced.

[0078] For example, the Honor 100 Pro mobile phone, according to the data, adopts a wide-area stainless steel VC for heat dissipation, with a thickness as thin as 0.35 mm and an area of 4674 mm 2 . Accordingly, implementing this application: configure the battery in the mobile phone as a double battery in parallel left and right and on the same layer, and configure the middle of the double battery with the plate-shaped cavity. The plate-shaped cavity is configured to be along the length direction of the mobile phone, and the plate-shaped cavity is configured to have a width of 2.0 mm to accommodate the longitudinal part; further, configure the double battery to have a thickness of 4.0 mm and a length of 85.0 mm; further still, configure the thickness of the lateral part to be thinned to 0.20 - 0.25 mm; further still, configure the thickness of the longitudinal part to be the same as the thickness of the plate-shaped cavity, which is 2.0 mm, configure the height of the longitudinal part to be the same as the thickness of the double battery, which is 4.0 mm, and configure the length of the longitudinal part to be the same as the length of the double battery, which is 85.0 mm; furthermore, it can be seen that the volume of the longitudinal part (length × height × thickness) is 85.0 mm × 4.0 mm × 2.0 mm. (Compared with the two-dimensional vapor flow within the existing 0.35 mm thickness of the vapor chamber of the Honor 100 Pro mobile phone), after such implementation, it provides a wider channel for the vapor to flow towards the distal end of the condensation end in the third dimension (i.e., within the longitudinal plate cavity), and at the same time, the longitudinal part can suppress the liquid film plugging phenomenon within the lateral part.

[0079] In some examples, the multi-segment structure of the mobile phone disclosed in the present disclosure is a three-segment structure. For example, the upper segment may integrate a frame, a middle frame, several cameras, antennas, a main board encapsulating a core processor, and a cover plate on the main board. The upper segment may also have an NFC induction coil, etc.; the middle segment has a single or double battery and a heat dissipation film. The middle segment may also have a wireless charging module, etc.; the lower segment has accessories such as a deputy board, a vibration motor, and a socket. Preferably, it has a first longitudinal rib and / or a second longitudinal rib.

[0080] In addition, the mobile phone of the present disclosure may also be of a special-shaped design that is locally different from the three-section structure. This special-shaped design can also divide the inner cavity of the mobile phone into three sections, namely the upper section, the middle section, and the lower section. For example, in this special-shaped design, the upper section houses components such as a camera module, a receiver, and a first part of the main board (in a rectangular or L shape); the middle section houses a second part of the main board extending from the upper section to the middle section, and components such as a rectangular or L-shaped battery; the lower section houses components such as a vibration motor and a secondary board. In some types of main boards of this special-shaped design, the SOC is located in the upper section or the middle section.

[0081] In another embodiment, optionally, the mobile phone further includes:

[0082] The top surface of a battery in the mobile phone is configured to accommodate the transverse part of the 3D vapor chamber; the middle frame and the battery are stacked perpendicular to the thickness direction of the mobile phone; and,

[0083] The 3D vapor chamber further includes a longitudinal part, which is the part of the condensation end corresponding to the longitudinal plate cavity; the part of the 3D vapor chamber other than the longitudinal part is the transverse part; the transverse part is perpendicular to the thickness direction of the mobile phone; the transverse part includes the evaporation end and the part of the condensation end other than the longitudinal part;

[0084] The longitudinal part is distributed on the first side surface of the transverse part, and the first side surface faces the screen of the mobile phone; the area of the first side surface corresponding to the evaporation end is configured to be coupled to a target heat source in the mobile phone, and the first side surface faces the target heat source.

[0085] It can be understood that in this embodiment when the mobile phone is used with the screen facing up, the longitudinal part of the 3D vapor chamber will be located above the transverse part, which is beneficial for the vapor phase to quickly rise to the longitudinal part, and the condensed liquid phase in the longitudinal part can provide gravity reflux. It can significantly enhance the heat transfer performance of the 3D vapor chamber and strengthen the suppression of the liquid film slugging phenomenon in the transverse part.

[0086] In this another embodiment, further, the mobile phone may further include: the longitudinal part is accommodated within the plate-shaped cavity, where:

[0087] The plate-shaped cavity is located in the middle section and is sandwiched between multiple second batteries included in the second component or between any two of the second battery, the second stacked device layer, and the second outer frame, or,

[0088] The plate-shaped cavity is located in the upper section and is sandwiched between the first stacked device layer included in the first component and the first outer frame, and the plate-shaped cavity is parallel to the length direction of the mobile phone, or,

[0089] The plate-shaped cavity is located between the upper section and the middle section or between the middle section and the lower section, and the plate-shaped cavity is parallel to the width direction of the mobile phone.

[0090] Please refer to Figures 2-1 to 2-5 , which shows a schematic structural diagram of a flat heat pipe in step S11 of Embodiment 1 of the manufacturing method of a 3D heat pipe included in a mobile phone with an improved stacking architecture according to the present disclosure.

[0091] As in Embodiment 1 of the manufacturing method, the manufacturing method is used to prepare a 3D heat pipe, and the manufacturing method includes the following steps S11 to S12:

[0092] Step S11, prepare a flat heat pipe, the flat heat pipe is configured such that one end is an evaporation end and the other end is a condensation end, and a preset area on the top surface or bottom surface of the evaporation end is configured to be coupled to the surface of a target heat source, and

[0093] the flat heat pipe is configured to have a preset bending portion, and the preset bending portion coincides with an orthogonal plane passing through the flat heat pipe, wherein:

[0094] Reference can be made to the examples Figure 2-1 , Figure 2-2 , Figure 5-1 , Figure 5-2 , the condensation end is distributed with preset bending portions, and the orthogonal plane does not pass through the evaporation end,

[0095] Or, reference can be made to the examples Figure 3 , Figure 6 , the condensation end is distributed with preset bending portions, and the orthogonal plane passes through the evaporation end, and the evaporation end and the condensation end on one side of the orthogonal plane are connected to each other, while the evaporation end and the condensation end on the other side are not connected to each other,

[0096] Or, reference can be made to the sub - figure (a) in Figure 4 , the boundary portion between the condensation end and the evaporation end is distributed with preset bending portions, and the orthogonal plane does not pass through the evaporation end.

[0097] Step S12, reference can be made to Figures 2-3 to 2-4 , bend the flat heat pipe along the preset bending portion so that the flat heat pipe presents a transverse portion and a longitudinal portion that are perpendicular to each other, thereby obtaining the 3D heat pipe corresponding to the transverse portion and the longitudinal portion.

[0098] Specifically, as shown in Figures 2-1 to 2-5 , it shows that it includes an evaporation end 10, a condensation end 20, a preset bending portion 30, a transverse portion 100, and a longitudinal portion 200.

[0099] Among them, Figure 2-1 the position of the cross - section AA’ is shown in sub - figure (e) of Figure 2-3Shows two alternative structural schematic diagrams of the cross-section of the section AA', where sub-diagram (a) shows a flat heat pipe in step S11 with equal thickness; sub-diagram (b) shows a flat heat pipe in step S11 with unequal thickness. In sub-diagrams (c), (d), and (f), two preset bending points 30 are shown. One of the preset bending points 30 can be selected, and the closer the preset bending point 30 is to the inner side, the higher the height of the longitudinal portion 100 formed. The height of the longitudinal portion 100 is preferably adapted to the device stacking layer of the same layer, such as a battery or a circuit stacking board, so as to make full use of the space of the gap layer vacated between the device stacking layers and achieve cross-layer heat transfer. Also, in sub-diagrams (c), (d), and (f), two preset bending points 30 are shown. It is also possible to select both of the two preset bending points 30 to make the same-direction vertical bends to form the 3D heat pipe structure obtained in step S13, and then use the elasticity of the 3D heat pipe to achieve assembly inside the mobile phone. For example, the horizontal portion is located on the bottom surface of a battery, and the second horizontal portion is located on the top surface of the battery. The second longitudinal portion formed by further bending of the longitudinal portion is located on one side surface of the battery.

[0100] Figure 2-4 Shows Figure 2-3 The structural schematic diagram obtained after the structure in is processed by step S12. In sub-diagram (a), the horizontal portion 100 and the longitudinal portion 200 have equal thickness, which has the advantages of simple structure, high preparation speed, and low cost; in sub-diagram (b), the thickness of the longitudinal portion 200 is greater than that of the horizontal portion 100. The longitudinal portion 200 is configured to divide the width space or the length space of the mobile phone, and the width space and the length space are respectively the second most precious space and the least precious space of the mobile phone, and the thickness space is undoubtedly the most precious space. This example precisely coordinates this point, that is, the current development trend of the ultra-thinning of electronic devices, especially mobile phones. Furthermore, it gives a new development direction beyond the trend of the ultra-thinning of the heat pipe but being difficult to continue thinning, that is, the thickness of the longitudinal portion 200 is greater than that of the horizontal portion 100 to achieve further improvement in heat dissipation performance. However, the disadvantage is that it slightly occupies the width space or the length space of the mobile phone, which may cause the tension of the inner cavity space (for example, the volume of the battery that can be filled becomes smaller), but the influence can be reduced through various methods such as further stacking of devices, reducing the size of some components, or increasing the length of the battery (although the battery width is limited and reduced).

[0101] Figure 2-5An optimal example of steps S11 to S12 is shown. Among them, sub - figure (a) shows a schematic cross - sectional structure of the condensation end before bending. The thickness of the right - hand part of the plate cavity at the preset bending position 30 is greater than that of the left - hand part. It also shows the upper cover plate, the lower cover plate and the preset bending position 30, and an arrow shows one direction of the bending in step S12; sub - figure (b) shows the schematic cross - sectional structure of the condensation end after bending, and the left - hand part of the plate cavity and the right - hand part of the plate cavity respectively form a transverse part 100 and a longitudinal part 200. For example Figure 2-5 In sub - figure (a), it can be Figure 2-1 a schematic cross - sectional view of a cross - section AA’ shown in sub - figure (e).

[0102] Please refer to Figure 3 , which shows a top - view structural schematic diagram of the flat heat - pipe in step S11 of Embodiment 2 of the manufacturing method of the 3D heat - pipe included in the mobile phone of the present disclosure.

[0103] Please refer to Figure 4 , which shows a top - view structural schematic diagram of the flat heat - pipe in step S11 of Embodiment 3 of the manufacturing method of the 3D heat - pipe included in the mobile phone of the present disclosure. Among them, sub - figure (a) shows that the built - in 3D heat - pipe included in the mobile phone corresponds to the feature of "the preset bending position is distributed at the boundary between the condensation end and the evaporation end, and the orthogonal plane does not pass through the evaporation end" in step S11 and is obtained through step S21. Other sub - figures (b) to (j) show another way, that is, the preset bending position 30 is distributed at the condensation end 20, and the condensation end is divided into two parts, and the orthogonal plane does not pass through the evaporation end. In addition, sub - figures (g) to (h) show the right - hand part of the preset bending position 30 with different lengths and forms in the flat heat - pipe to be able to adapt to the space position of different device stacks in the mobile phone or the need for function avoidance. In this application, this non - penetration means that there is no intersection.

[0104] Please refer to Figure 5-1 , which shows a top - view structural schematic diagram of the flat heat - pipe in step S11 of Embodiment 4 of the manufacturing method of the 3D heat - pipe included in the mobile phone with an improved stacking architecture of the present disclosure. Specifically Figure 5-1 In each sub - figure, the built - in 3D heat - pipe included in the mobile phone corresponds to the feature of "the condensation end is distributed with the preset bending position, and the orthogonal plane does not pass through the evaporation end" in step S11 and is obtained through step S21; and in particular, it has a hollow window 40 or a partition 50.

[0105] In this application, the partition (for example Figure 5-1The sub - diagrams (b), (c), (d), (e), (g), (h), etc.) are used to form a loop cavity in the horizontal part, and optimize the cooperation with the horizontal part for the gas - phase vapor flow, promoting the gas - phase vapor flow in the horizontal part to flow in the loop cavity. In some embodiments, the vertical part constitutes a unidirectional cycle for promoting the formation of the loop cavity in the horizontal part, thereby enhancing the phase - change cycle and its intensity, and realizing the enhancement of the heat transfer performance of the 3D vapor chamber. It can be understood that all need to be preset and determined before design and manufacturing.

[0106] The hollow window includes a closed type (for example Figure 3 sub - diagrams (f), (g), (h), (j) and (k), or such as Figure 5-1 sub - diagrams (a) and (f)), or an open type (for example Figure 3 sub - diagrams (l) and (m)). Among them, the closed type can achieve the same function as the partition (that is, obtain a loop cavity, but cause a certain reduction in the inner cavity volume of the horizontal part). For example, Figure 3 in sub - diagram (f), the vertical part is coupled to the closed - type hollow window; and for another example, Figure 3 in sub - diagram (l), the vertical part is coupled to the open - type hollow window. The open type can obtain the bifurcated U - shape, and the length of the bifurcated part of the bifurcated U - shape can be flexibly adjusted, and can be of the same length (for example Figure 3 sub - diagrams (l) and (m) and Figure 6 sub - diagram (k)), or one long and one short (for example Figure 1-2 sub - diagram (m) and Figure 6 sub - diagrams (j) and (l)), thereby realizing more flexible avoidance and misplacement of the position space and enabling flexible adjustment of the overall anti - bending ability of the mobile phone. For example, when it is one long and one short and the vertical part is coupled to the long one, the short one reduces the occupied hollow area of, for example, the middle frame of the mobile phone. Further, if the short one is located in the left - half area of the middle frame, it can enable the left - half area of the middle frame to retain more area of the middle frame, and further set a battery on the left and right sides of the vertical part respectively. It can be understood that all need to be preset and determined before design and manufacturing.

[0107] Please refer to Figure 5-2 , which shows a schematic structural diagram of the flat vapor chamber in step S11 of Embodiment 5 of the manufacturing method of the 3D vapor chamber included in the mobile phone of the present disclosure. Specifically, Figure 5-2In sub - figures (a) to (g), the built - in 3D vapor chamber included in the mobile phone is shown to correspond to the feature of "the condensation end is distributed with the preset bending portion, and the orthogonal plane does not penetrate through the evaporation end" in step S11 and is obtained through step S21; and in particular, it has a hollow window 40 or a partition 50. Among them, sub - figure (h) can be rotated so that the preset bending portion 30 forms an adaptation angle with, for example, the length direction of the mobile phone. For example, the preset bending portion 30 is parallel to the length direction of the mobile phone.

[0108] Please refer to Figure 6 , which shows a top - view structural schematic diagram of the flat vapor chamber in step S11 of the manufacturing method embodiment 6 of the 3D vapor chamber included in the mobile phone of the present disclosure. Specifically, Figure 6 In each sub - figure, the built - in 3D vapor chamber included in the mobile phone is shown to correspond to the feature of "the condensation end is distributed with the preset bending portion, and the orthogonal plane penetrates through the evaporation end, and the evaporation end on one side of the orthogonal plane is connected to the condensation end, and the evaporation end on the other side is not connected to the condensation end" in step S11 and is obtained through step S21; and in particular, it has a hollow window 40 or a partition 50.

[0109] Specifically, as Figure 3 , Figure 4 , Figure 5-1 , Figure 5-2 , Figure 6 shown, it includes an evaporation end 10, a condensation end 20, a preset bending portion 30, a transverse portion 100, and a longitudinal portion 200; it also includes a hollow window 40 and a partition 50. The hollow window 40 can be used to form a loop - type channel or a parallel bypass - type channel in the inner cavity of the flat vapor chamber. The partition 50 can be used to form a loop - type channel in the inner cavity of the flat vapor chamber, so as to cooperate with the wick structure to enhance the phase change cycle of the gas - liquid phase and reduce conflicts, and further improve the heat dissipation performance under the cooperation of the longitudinal portion 200. It can be understood that the edge of the hollow window 40 must be sealed to prevent the leakage of working fluids such as the gas - liquid phase. The partition 50 is also a support structure between the upper cover plate and the lower cover plate and forms a partition wall structure.

[0110] Optionally, the flat heat pipe is configured such that the inner cavity has or does not have a flow guiding structure, such as a partition 50; the flow guiding structure is used to form a loop-shaped cavity in the inner cavity. Preferably, the flow guiding structure is configured as a flow guiding rib plate, and the top and bottom ends of the flow guiding rib plate are respectively bonded to the upper cover plate and the lower cover plate of the flat heat pipe, so that the working fluid can flow around the circumference of the flow guiding rib plate, thereby forming a loop-shaped cavity; alternatively, the flow guiding structure is configured as a hollow window, and an edge bonding seal is formed between the upper cover plate and the lower cover plate of the flat heat pipe corresponding to the hollow window, so that the working fluid in the inner cavity of the flat heat pipe cannot escape to the external space through the hollow window at the bonding seal, and the working fluid can flow around the circumference of the hollow window, thereby forming a loop-shaped cavity. For example, when the vapor-phase working fluid generated by evaporation at the evaporation end flows towards the condensation end, it will encounter the end of the flow guiding structure, and the flow guiding structure provides two channels for the vapor-phase working fluid, one of which can have low resistance to force the vapor-phase working fluid to pass through preferentially, reach the end of the flow guiding structure, and then flow to the other channel. Eventually, part of the vapor-phase working fluid can circulate back to the evaporation end. The flat heat pipe in the present disclosure is configured as a gas-liquid phase change heat transfer device, which can be a standard type or a gravity type.

[0111] Optionally, the sitting placement can be that the middle frame has a sitting groove; or it can be a connection (such as welding) between the outer edge of the transverse part and the inner edge of a hollow area of a middle frame. Preferably, the bottom surface or the top surface of the transverse part has its edge configured to sit on the hollow area of the middle frame. The problem of better sealing between the 3D heat pipe and the mobile phone middle frame is realized, and at the same time, the problem of reasonable avoidance between the 3D heat pipe and the longitudinal ribs of the mobile phone is realized.

[0112] Preferably, the longitudinal part does not have an overlapping projection with the first longitudinal rib and / or the second longitudinal rib of the mobile phone and is located on the same layer. To avoid the problem of mutual conflict in spatial positions.

[0113] In some embodiments, the hollow area of the middle frame of the mobile phone is used to accommodate, for example, the sitting transverse part. Optionally, the sitting placement is realized through a sitting groove, and the sitting groove can be provided on the top surface of the middle frame facing the screen panel or the bottom surface of the middle frame facing away from the screen panel. For example, if the sitting placement is realized through a sitting groove and the sitting groove faces the screen, the longitudinal part is configured to pass through the hollow area. Further, if the mobile phone has longitudinal ribs, the longitudinal part should not conflict with the longitudinal ribs when passing through. Preferably, if the mobile phone has longitudinal ribs, the longitudinal ribs are provided between the upper section and the middle section of the mobile phone and / or between the middle section and the lower section of the mobile phone, and the longitudinal part is located inside the middle section, and a battery is also provided inside the middle section. Also, for example, if the sitting placement is realized through a sitting groove and the sitting groove faces away from the screen (i.e., the sitting groove is provided on the side of the two sides of the middle frame facing away from the screen), the longitudinal part is configured not to pass through the hollow area, and the longitudinal part is located inside the middle section, and a battery is also provided inside the middle section.

[0114] The present disclosure also provides an implementation of a mobile phone, which further includes: the longitudinal portion of the 3D heat spreader is facing upward, that is, the top surface of the transverse portion is distributed with the longitudinal portion; the bottom surface of the transverse portion is parallel to the top surface of the transverse portion; the area of ​​the top surface of the transverse portion corresponding to the evaporation end is configured to be thermally coupled to a target heat source in the mobile phone, and the target heat source is located above the area of ​​the top surface of the transverse portion corresponding to the evaporation end; and the battery in the mobile phone is located above the top surface of the transverse portion. Optionally, the longitudinal portion is sandwiched in a plate-shaped cavity formed between two batteries on the same layer in the mobile phone, or sandwiched in a plate-shaped cavity formed between a battery on the same layer in the mobile phone and an outer frame; or, sandwiched in a plate-shaped cavity formed between the upper side of a first longitudinal rib and the lower side of a first component on the same layer, or sandwiched between the lower side of a first longitudinal rib and the upper side of a battery on the same layer; or, sandwiched in a plate-shaped cavity formed between the upper side of a second longitudinal rib and the lower side of a second component on the same layer, or sandwiched between the lower side of a second longitudinal rib and the upper side of a third component in a lower section. Optionally, the longitudinal portion does not have overlapping projections with the first longitudinal rib and / or the second longitudinal rib of the mobile phone, and is arranged on the same layer to avoid conflicts in the setting space when the setting is on the same layer. It can be seen that in the mobile phone implementation, the longitudinal part of the 3D heat spreader is changed to face upward, that is, the transverse part is located below the longitudinal part, and the bottom surface of the transverse part faces the bottom cover of the mobile phone; while in some of the aforementioned mobile phone implementations, the longitudinal part of the 3D heat spreader is configured to face downward, that is, the transverse part is located above the longitudinal part, and the top surface of the transverse part faces the screen of the mobile phone. These two implementations will obviously bring different heat transfer methods and performances.

[0115] It should be pointed out that in the present disclosure, the preset bending point in step S11 can be regarded as the location of the portion of the flat-plate-shaped heat spreader that overlaps with the orthogonal plane. The preset bending point in step S11 overlaps with an orthogonal plane of the flat-plate-shaped heat spreader, wherein the orthogonal plane always remains overlapped with the defined preset bending point during the bending process in step S12, that is, the preset bending point and the orthogonal plane are both synchronously deflected during the bending process.

[0116] It should be noted that in the present disclosure, the 3D heat spreader includes a closed shell, and a working fluid injected into the closed shell after being evacuated. In the present disclosure, the 3D heat spreader includes a reflux structure for liquid-phase working fluids such as a capillary structure, a groove structure, or a wire mesh structure in the closed shell, or does not include a reflux structure for liquid-phase working fluids such as a capillary structure, a groove structure, or a wire mesh structure in the closed shell. The 3D heat spreader, for example, may only include a closed shell and a working fluid in the closed shell, and the closed shell is evacuated. The flat heat spreader may be made of copper or stainless steel, etc.

[0117] For the 3D vapor chamber in the present disclosure, the thickness of the longitudinal part can be, for example, 0.4 - 1.0 mm, or 1.0 - 3.0 mm, or even up to 3.0 - 5.0 mm, etc.; the thickness of the transverse part can be 0.3 - 0.5 mm, or less than 0.3 mm, or 0.5 - 1.0 mm. It is known that the larger the thickness space, the smaller the resistance to vapor migration. The longitudinal part can greatly reduce the resistance to vapor migration, increase the migration speed, thereby promoting the strength of the phase change cycle and enhancing the heat transfer performance.

[0118] The simple, rapid, and low-cost addition of the longitudinal part, and the width or length space occupied by the addition in the mobile phone are far less valuable than the thickness space. Under the current trend of thinning and large-screening of mobile phones, etc., the solution of the present disclosure ingeniously combines and utilizes this development trend, turning disadvantages into advantages, making the implementation more favorable, and giving a new development direction. The solution of the present disclosure can also achieve further thinning of the vapor chamber, but the heat transfer performance can be maintained or improved.

[0119] For example, if the overall thickness of the transverse part is reduced to less than 0.30 mm, and the shell thicknesses of the upper cover plate and the lower cover plate are both 0.08 mm, then the total shell thickness is, for example, 0.16 mm. If there are two layers of copper wire meshes on the inner wall surface with a total thickness of 0.05 mm, then there is still 0.09 mm left for the cavity thickness for the vapor-phase flow of steam. It can be seen that if the transverse part is still the existing flat vapor chamber, it will be prone to the mutual conflict between the gas and liquid phases of the liquid slug and the heat transfer will deteriorate; but based on the solution of the present disclosure, the liquid film plunger phenomenon is suppressed by the added longitudinal part, thereby enhancing the strength of the phase change cycle and achieving cross-layer heat transfer to increase the heat flux.

[0120] This application also discloses a mobile phone embodiment including a 3D vapor chamber, which has a multi-segment structure. The multi-segments can be three segments, and the three segments include an upper segment, a middle segment, and a lower segment. The 3D vapor chamber includes a transverse part and a longitudinal part that are orthogonally bent, and the transverse part and the longitudinal part are connected. The longitudinal part is configured to be clamped between the in-device layers of the same layer in the mobile phone. One end of the transverse part and its nearby section are configured as the evaporation end, and the other end and a certain section nearby are configured as the condensation end. The remaining section except the evaporation end can be regarded as the condensation end.

[0121] Preferably, the evaporation end is distributed in the upper segment, and the longitudinal part is not distributed at the evaporation end located in the upper segment. The longitudinal part is distributed in the section except the evaporation end located in the upper segment. For example, the transverse part also extends to the middle segment and the longitudinal part is distributed in the transverse part extending to the middle segment.

[0122] Optionally, the transverse part is seated in the hollow window of the middle frame of the mobile phone. Preferably, the first side surface of the transverse part connecting the longitudinal part is constructed as the bottom surface, which faces the bottom surface of the mobile phone battery; and the second side surface of the transverse part not connecting the longitudinal part is constructed as the top surface, which faces the screen plate of the mobile phone battery. When the mobile phone screen faces upward, the longitudinal part is located below the transverse part.

[0123] Optionally, the longitudinal part is distributed in the middle section, and the direction is parallel to the length direction of the mobile phone; and the longitudinal part is clamped between the double batteries located in the middle section, or between the inner side surface of the frame and the outer side surface of the battery located in the middle section. Preferably, the thickness of the longitudinal part is less than or equal to the thickness of the battery.

[0124] Optionally, the longitudinal part is distributed between the upper section and the middle section, and the direction is parallel to the width direction of the mobile phone. For example, between the lower side surface of the first longitudinal rib plate for strengthening the overall structural strength of the mobile phone located between the upper section and the middle section and the upper side surface of the battery located in the middle section. Preferably, the thickness of the longitudinal part is less than or equal to the thickness of the battery.

[0125] Optionally, the longitudinal part is distributed between the middle section and the lower section, and the direction is parallel to the width direction of the mobile phone. For example, between the upper side surface of the second longitudinal rib plate for strengthening the overall structural strength of the mobile phone located between the middle section and the lower section and the lower side surface of the battery located in the middle section. Preferably, the thickness of the longitudinal part is less than or equal to the thickness of the battery.

[0126] In the present disclosure, the battery can be a single or dual-cell battery. The dual-cell battery can be separated from each other or encapsulated in an outer protective layer. The dual-cell battery can be of the same size or different sizes to adapt to the flexibility of the installation position of the longitudinal part when the longitudinal part is clamped between the dual-cell batteries. The battery can be in the shape of a rectangular plate or an L-shaped plate. The dual-cell batteries can be of the same length or one long and one short.

[0127] Optionally, the inner wall surfaces of the transverse part and the longitudinal part can be adapted to capillary cores. The capillary core includes, for example, a single-layer or multi-layer copper wire mesh, or sintered copper powder, or unsintered bulk copper powder, or micro-grooves, etc.

[0128] This application also discloses a vapor chamber with a T-shaped cross-section in some sections designed for a mobile phone. The mobile phone has a multi-section structure, and the multi-sections can be three sections, including an upper section, a middle section, and a lower section. The T-shaped vapor chamber includes an orthogonal transverse plate cavity and a longitudinal plate cavity. The transverse plate cavity and the longitudinal plate cavity are either connected or not connected. The longitudinal plate cavity is configured to be clamped between the inner device layers of the same layer of the mobile phone. One end and its adjacent section of the transverse plate cavity are constructed as the evaporation end, and the other end and a certain section near it are constructed as the condensation end. The remaining section except the evaporation end can be regarded as the condensation end.

[0129] Preferably, the upper section is provided with an evaporation end, and the evaporation end located in the upper section is not provided with a longitudinal plate cavity. The longitudinal plate cavity is distributed in sections other than the evaporation end located in the upper section. For example, the transverse plate cavity also extends to the middle section, and a longitudinal part is distributed in the transverse plate cavity extending in the middle section.

[0130] Optionally, the transverse plate cavity is seated in the hollow window of the mobile phone middle frame. Preferably, the first side surface of the transverse plate cavity connecting the longitudinal plate cavity is configured as the bottom surface, which faces the bottom surface of the mobile phone battery; and the second side surface of the transverse plate cavity not connected to the longitudinal plate cavity is configured as the top surface, which faces the screen plate of the mobile phone battery. When the mobile phone screen is facing up, the longitudinal plate cavity is located below the transverse plate cavity.

[0131] Optionally, the longitudinal plate cavity is distributed in the middle section and is parallel to the length direction of the mobile phone; and the longitudinal plate cavity is clamped between the double batteries located in the middle section or between the inner side surface of the frame and the outer side surface of the battery located in the middle section. Preferably, the thickness of the longitudinal plate cavity is less than or equal to the thickness of the battery.

[0132] Optionally, the longitudinal plate cavity is distributed between the upper section and the middle section and is parallel to the width direction of the mobile phone. For example, between the lower side surface of the first longitudinal rib plate for strengthening the overall structural strength of the mobile phone located between the upper section and the middle section and the upper side surface of the battery located in the middle section. Preferably, the thickness of the longitudinal plate cavity is less than or equal to the thickness of the battery.

[0133] Optionally, the longitudinal plate cavity is distributed between the middle section and the lower section and is parallel to the width direction of the mobile phone. For example, between the upper side surface of the second longitudinal rib plate for strengthening the overall structural strength of the mobile phone located between the middle section and the lower section and the lower side surface of the battery located in the middle section. Preferably, the thickness of the longitudinal plate cavity is less than or equal to the thickness of the battery.

[0134] Optionally, the inner wall surfaces of the transverse plate cavity and the longitudinal plate cavity can be adapted to capillary wicks. The capillary wicks are selected from, for example, including single-layer or multi-layer copper wire meshes, or sintered copper powder, or non-sintered loose copper powder, or micro-grooves, etc.

[0135] For example, if the overall thickness of the transverse plate cavity is reduced to less than 0.30 mm, and the thicknesses of the upper cover plate and the lower cover plate are both 0.08 mm, then the total shell thickness is, for example, 0.16 mm. If there are two layers of copper wire meshes with a total thickness of 0.05 mm on the inner wall surface, then there is still 0.09 mm left for the cavity thickness for the vapor-phase flow of steam. It can be seen that if the transverse plate cavity is still the inner plate cavity of the existing flat heat pipe, it will be prone to the mutual conflict of the gas-liquid phases of the liquid slug and the heat transfer will deteriorate; but based on the solution of the present disclosure, the liquid film slug phenomenon is suppressed by the added longitudinal plate cavity, thereby enhancing the phase change cycle intensity and achieving cross-layer heat transfer to improve the heat flux.

[0136] For example, the T-shaped vapor chamber can be regarded as another type of 3D vapor chamber. However, compared with the 3D vapor chamber obtained by the relatively simple, fast preparation and low-cost manufacturing method described above, the preparation of the T-shaped vapor chamber is more difficult, the preparation speed is slower, and the cost is higher. Moreover, it even requires welding seams or the thicknesses of two outer shells for lap welding, thereby increasing the thickness occupation. Nevertheless, it can still set the transverse plate cavity and the longitudinal plate cavity more flexibly.

[0137] The above is the disclosure content of the first aspect of this application. In addition to the above disclosure content of the first aspect, the following is the disclosure content of other aspects of this application. It should be noted that the disclosure content of the first aspect of this application and the following disclosure content of other aspects and the feature points therein can be combined with each other without conflict.

[0138] In the second aspect of the present disclosure, optionally, after the steps S11 and S12, the manufacturing method further includes the following steps: S13, the longitudinal part is configured to have a preset second bending part parallel to the preset bending part, and a vertical bending is formed along the preset second bending part on the longitudinal part to obtain a second transverse part parallel to the transverse part and a second longitudinal part perpendicular to the transverse part; the second transverse part has or does not have a projection on the transverse part.

[0139] In the third aspect of the present disclosure, there is also provided a vapor chamber, characterized in that the vapor chamber includes: the 3D vapor chamber as described in the first aspect above, or the 3D vapor chamber prepared by the manufacturing method as described in the second aspect above.

[0140] In the fourth aspect of the present disclosure, there is also provided an electronic device, characterized in that the electronic device includes: the 3D vapor chamber as described in the first aspect above, or the 3D vapor chamber prepared by the manufacturing method as described in the second aspect above. Preferably, the product type of the electronic device is a mobile phone.

[0141] It should be noted that the flat vapor chamber in step S11 of the present disclosure can be either sealed or unsealed. This sealing is used for vacuum pumping and injecting working fluid. That is to say, the flat vapor chamber can be a flat vapor chamber that has undergone vacuum pumping and sealing operations; it can also be a flat vapor chamber that has not yet undergone vacuum pumping operations and sealing operations. Therefore, after steps S11 to S12, vacuum pumping and sealing operations are still required to form a vapor-liquid phase change type vapor chamber.

[0142] In the present disclosure, for the 3D vapor chamber, the enclosed cavity inside it is configured to have multiple connected plate-shaped cavities (including the first to the Nth plate-shaped cavities, where N is a positive integer greater than 1), and the thicknesses of different plate-shaped cavities are the same or different. These multiple connected plate-shaped cavities can be divided based on definitions such as distribution orientation, position, or spatial form, or can be divided based on the cross-sectional area or shape of the gas-phase working medium channels, or can be divided based on whether there is a wick on the inner wall surface, or can be divided based on the thickness, setting position, or area of the wick. The structural forms such as the shape, area, or thickness presented on the cross-section of each plate-shaped cavity can be the same and / or different.

[0143] It can be understood that the second plate-shaped cavity and the first plate-shaped cavity are for the convenience and concise expression before bending. After bending, a longitudinal part and a transverse part are obtained, so as to form a better description and distinction. For example, the thickness of the second plate-shaped cavity is less than, equal to, or greater than the thickness of the first plate-shaped cavity. In the present disclosure, the prefabricated flat vapor chamber is configured such that one end is the evaporation end and the other end is the condensation end. Among them, the condensation end can be the part of the flat vapor chamber other than the evaporation end. In the present disclosure, the longitudinal part can also be used as a kind of longitudinal rib to improve the overall structural strength of an electronic device such as a mobile phone.

[0144] Optionally, the longitudinal part can be further flattened to reduce the thickness of the inner cavity. Optionally, for the longitudinal part, either one or both of its two side surfaces can be adhered to the inner wall surface of the plate-shaped cavity through a thermally conductive adhesive layer to obtain a heat transfer path. Optionally, the outer shell thickness of the longitudinal part can be greater than the outer shell thickness of the transverse part, so that the longitudinal part has better anti-deformation ability. Optionally, the longitudinal part has an anti-negative pressure structure, such as an anti-negative pressure column, or a rib, or an anti-negative pressure core layer in the form of a gas-liquid coplanar surface, or a wavy mesh core support structure with a certain rigidity and large voids. The two sides of the wavy mesh core support structure respectively abut against the inner wall surface of the upper cover plate and the inner wall surface of the lower cover plate. The longitudinal part of the present application only needs to have a cavity with a vertical component, so it can be upright or obliquely standing, or further have a curved surface shape with a vertical bending on the basis of being upright or obliquely standing.

[0145] The benefits of the disclosed technical solution include saving the most precious thickness space of the electronic device, or making the increase in thickness space controllable, or not causing excessive increase in thickness space, to meet the ultra-thin requirement of the electronic device. Instead, it utilizes the less precious width space or the least precious length space of the electronic device to extend or greatly extend the thin or ultra-thin inner cavity of the transverse part. And due to the extension of the longitudinal part, the area of the transverse part can be reduced, thus avoiding the insufficient structural strength of the overall middle frame or skeleton of the mobile phone, etc. in the trend of the existing vapor chamber becoming larger and larger in area, without causing a significant decrease in the overall cavity volume of the vapor chamber. It also maximally suppresses or breaks the liquid film plunger phenomenon that is likely to occur due to the possible ultra-thinning of the transverse part, thereby preventing the mutual blockage of the liquid film and gas phase, and realizing an efficient and high-strength phase change cycle.

[0146] For example, if the inner cavity of the air duct in the transverse part has a large area of 3000 mm2 and a thickness of 0.1 mm, then the total inner cavity volume is 300 mm3. And, (1) the longitudinal part is set parallel to the length direction of the mobile phone, for example, and the inner cavity of the air duct has a length of 70 mm, a thickness of 1 mm, and a height (i.e., width) of 3.5 mm, then the inner cavity volume of the longitudinal part is 245 mm3. In this way, the total air duct volume of the 3D vapor chamber reaches 545 mm3, which is increased by 1.82 times. After reducing the extended area of the transverse part, the increase multiple is more significant. And the thickness of the longitudinal part is 1 mm (compared with the inner cavity thickness of 0.1 mm in the transverse part), which can greatly avoid the liquid film plunger phenomenon easily caused by the ultra-thinning of the transverse part. Or (2) the longitudinal part is set parallel to the width direction of the mobile phone, for example, and the inner cavity of the air duct has a length of 55 mm, a width of 2 mm, and a height of 3.5 mm, then the inner cavity volume of the longitudinal part is 385 mm3. In this way, the total air duct volume of the 3D vapor chamber reaches 685 mm3, which is increased by 2.28 times. And the thickness of the longitudinal part is 2 mm (compared with the inner cavity thickness of 0.1 mm in the transverse part), which can more greatly avoid the liquid film plunger phenomenon easily caused by the ultra-thinning of the transverse part. The longitudinal part can be set on the rear side of the battery (or the side facing the lower frame of the mobile phone), for example. In this way, it extends the path and volume of the steam from the evaporation end to the distal end of the condensation end, suppresses the blockage of the gas phase by the liquid film plunger that is likely to occur after the ultra-thinning of the transverse part, strengthens the gas phase condensation, and promotes the formation of a high-strength phase change cycle.

[0147] Comparable to the above example, for the inner cavity of the airway in the longitudinal part, the width is increased from 1 mm to 2 mm because the width space of the mobile phone is the second most precious and the length space is the least precious. If the longitudinal part is more used as a condensation channel, the liquid absorption core layer may not be provided on its inner wall surface to obtain the largest possible gas-phase working medium cavity. Preferably, the liquid absorption core layer is provided on its inner wall surface to obtain the anti-gravity performance of the reflux liquid-phase working medium. For portable devices, especially mobile phones, the posture of the mobile phone usually changes, and in many cases, the screen may be facing up. This means that in some embodiments of the present application, the longitudinal part is usually located below the transverse part. Therefore, the anti-gravity performance becomes particularly important.

[0148] However, in some other embodiments of the present application, the longitudinal part is located above the transverse part. That is, when the transverse part is configured as the top surface of the battery for accommodating in an electronic device such as a mobile phone, and the longitudinal part is configured to be within the plate-shaped cavity formed by a certain distance between the devices accommodated in an electronic device, the longitudinal part is usually located above the transverse part. In this way, the longitudinal part has anti-gravity performance. The inner wall surface of the shell of the longitudinal part can be a flat shape without adding a reflux structure, or can be provided with a groove structure, or can be treated by hydrophilic treatment or hydrophobic treatment, or can be provided with an extremely thin second capillary structure core layer in a preset area. The inner cavity of the longitudinal part can be more used as a condensation channel, and the importance of whether there is a liquid absorption core layer on its inner wall surface is reduced. Especially for the case without a liquid absorption core layer, more gas-phase working medium can be obtained for the flowing volume.

[0149] In some examples, the thinner the thickness of the inner cavity of the transverse part, the smaller the thickness space occupied by the 3D heat sink plate in the electronic device, which is more beneficial to the thinning or ultra-thinning of the electronic device. In addition, the thicker the thickness of the inner cavity of the longitudinal part, the more obvious the effect of suppressing or breaking the liquid film plunger phenomenon easily caused by the ultra-thinning of the transverse part, thereby preventing the occurrence of the situation where the liquid film and the gas phase block each other, and realizing an efficient and high-intensity phase change cycle. However, the thicker the thickness of the inner cavity of the longitudinal part, the more thickness or length space of the electronic device such as a mobile phone it occupies, and the smaller the extended area of the devices such as the battery in the corresponding electronic device. But if the transverse part is more ultra-thinned, the thickness of the battery can be thicker. Thus, it may be possible that the total volume of the battery does not change or the rated total power of the factory does not decrease.

[0150] The mobile phone can adapt to the development trend of the ultra-thinning of the overall thickness of the mobile phone. By improving the internal space and the optimized collaborative stacking of the built-in devices, the stacking cooperation methods and scenarios of the position space and posture between the heat sink plate of the mobile phone and the built-in devices are expanded, thereby improving the problem of mutual conflict between the ultra-thinning of the transverse part and the improvement of the heat dissipation temperature control performance. And it realizes avoiding the problem of mutual conflict of the spatial position between the longitudinal part and the built-in devices such as the longitudinal rib plate.

[0151] Moreover, the 3D vapor chamber with optimized collaborative settings in the mobile phone suppresses the liquid film plunger phenomenon that is prone to occur after the lateral part is thinned by obtaining a longitudinally extended vertical part conveniently, enabling the embodiment of the present application to further reduce the thickness of the current vapor chamber to 0.30 mm or less, while enhancing the heat transfer performance of the vapor chamber and having the benefit of increasing the heat flux. At the same time, the ingeniously designed 3D vapor chamber in the mobile phone can increase the total amount of working fluid filled; during operation, the flow path of the gaseous working fluid is expanded, latent heat transfer is smooth; cross-layer heat transfer is achieved; and the anti-bending performance of the mobile phone can be enhanced when the area is equivalent, or the heat transfer performance can be enhanced when the area is limited.

[0152] The present disclosure provides a manufacturing method different from the prior art, which is simpler and more controllable, has fewer operation steps, better product yield, higher repeatability, higher reliability, lower cost, and is more suitable for automated equipment to obtain the mobile phone containing the 3D vapor chamber. Compared with the ultra-thin vapor chamber in the existing mobile phone, the 3D vapor chamber in this mobile phone expands the application scenarios of the vapor chamber, enables the 3D vapor chamber to be efficiently integrated into the mobile phone to achieve high-performance heat dissipation in multiple scenarios, improves the existing mobile phone to overcome the space conflict for accommodating the 3D vapor chamber, and has broad application potential.

[0153] In the present disclosure, the capillary structure core includes, but is not limited to, one or any combination of powder cores, fiber cores, woven fiber strip cores, wire meshes, and micro-nano structure cores manufactured by chemical or laser etching. For example, the first capillary structure core distributed in the lateral part can be the wire mesh or the micro-nano structure core, thereby obtaining an ultra-thin core layer, creating a favorable basis for realizing the ultra-thinning of the total thickness of the lateral part.

[0154] Optionally, the longitudinal plate cavity of the longitudinal part can have a greater thickness than the lateral plate cavity. Therefore, a capillary core with a greater thickness is arranged inside the longitudinal plate cavity, and the capillary core with a greater thickness can mean a better total amount of working fluid that can be filled (and thus can also obtain the function of a liquid storage cavity) and the reflux performance of the liquid-phase working fluid.

[0155] In some embodiments, the preset bending part has a direction parallel or oblique to the length direction or the width direction of the flat vapor chamber. In some examples, the length direction is configured as the direction from the evaporation end to the condensation end; the width direction is perpendicular to the length direction. In other examples, the length direction is configured as the direction of the maximum length of the flat vapor chamber.

[0156] Preferably, the thickness of the second lateral part is extremely thin. For example, the thickness does not exceed 0.2 - 0.3 mm. Optionally, the longitudinal part and / or the second lateral part in the present disclosure can be in contact with the graphene heat dissipation film attached to the top surface of the internal device layer (such as the battery) to further conduct heat to the graphene heat dissipation film.

[0157] Preferably, either the second horizontal part or the second vertical part, or the bending section between the two, should have a certain flexibility or elasticity to more efficiently and conveniently clamp the internal device layer (such as a battery) between the horizontal part and the second horizontal part. The housing of the 3D vapor chamber in the present disclosure can also be made of the extremely thin copper sheet, nickel-plated thin copper sheet, or stainless steel thin sheet, etc.

[0158] The middle frame can be integrally connected to the outer frame. Preferably, the surface of the horizontal part provided with the vertical part is placed on the hollow of the middle frame, and the vertical part passes through the hollow of the middle frame and then enters the same layer as the vertical rib. Or, the surface of the horizontal part without the vertical part can be placed on the hollow of the middle frame first, and then the vertical rib is welded to the outer frame and arranged in the same layer as the vertical part, and then the vertical part is sandwiched between the middle frame and the vertical rib. The hollow area of the middle frame, for example, the hollow is a hollow structure or a hollow window.

[0159] In the present disclosure, the device can be, for example, a single battery, a dual battery (with the same or different areas), a multi-battery, a circuit board (main board or sub-board), a shielding cover, or an outer frame, or a cover plate coupled to the top of the circuit board, or a vertical rib horizontally arranged inside the electronic device and connected to the middle frame and / or the frame for strengthening the strength of the skeleton structure, etc. Among them, the battery has six sides, including the top surface, the bottom surface, the front side surface, the rear side surface, the left side surface, and the right side surface. The dual battery can have the same or different widths. Then, the total width of the left and right parallel arrangement of the dual battery usually occupies all or part of the width space in the middle section of, for example, a mobile phone. If the vertical part is arranged at the plate-shaped gap formed by a certain distance between the two dual batteries, the width ratio of the dual battery can adjust the position of the vertical part. The circuit board (single-layer or multi-layer circuit board) has six sides, including the top surface, the bottom surface, the front side surface, the rear side surface, the left side surface, and the right side surface. The outer frame includes an inner side surface. The vertical rib has a front side surface and a rear side surface. The vertical rib can be arranged perpendicular to the length direction of the electronic device, and the thickness of the vertical rib is usually relatively thin. The upper cover plate forms one layer in the stacked layer and can be coupled with, for example, a flexible cable, a flash bead, an NFC coil, a buffer foam, or a heat dissipation film.

[0160] In the present disclosure, in one embodiment, the mobile phone has a frame, a middle frame connected to the frame, and longitudinal ribs connected to the middle frame and the frame. Among them, the interior of the middle frame is hollowed out for placing the horizontal part of the 3D vapor chamber (and / or the shape and size of the hollowed-out part inside the middle frame match the horizontal part). The longitudinal ribs are configured to be disposed between the upper and middle sections of the mobile phone, perpendicular to the length direction of the mobile phone, and located above the hollowed-out part. The 3D vapor chamber is attached and placed on the hollowed-out part from the side of the two sides of the middle frame that is away from the longitudinal ribs. In the present disclosure, the longitudinal ribs can be attributed to the upper, middle, or lower section of the mobile phone. The placement, for example, is placing, or placing and edge-welding, bonding, or coating a heat-conducting layer (TIM, such as a silicone grease layer).

[0161] In some embodiments, the longitudinal part can be used to improve the overall structural strength of an electronic device such as a mobile phone. The longitudinal part can play the same role in structural enhancement as the longitudinal ribs. For example, the longitudinal ribs may or may not be provided between the upper and middle sections or between the middle and lower sections of the mobile phone. This also conforms to the consideration of saving the occupied space in the length of the mobile phone.

[0162] Optionally, the mobile phone is configured as a three-section structure, and the three sections include an upper section, a middle section, and a lower section. The upper section, the middle section, and the lower section are distributed along the length direction of the mobile phone. In existing mobile phones, the upper section commonly houses components such as a processor, a memory, a main board, and a camera. The middle section commonly houses a single battery, or a dual battery, or a battery and a main board, etc. The lower section commonly houses a vibration motor, a secondary board, etc. And these components of existing mobile phones are commonly located on the bottom surface of the middle frame, while the top surface of the middle frame is commonly attached to the screen or a layer of copper foil on the bottom surface of the screen. The designs of the upper, middle, and lower sections of existing mobile phones can be incorporated into the mobile phone described in the present disclosure.

[0163] In some embodiments, the flat vapor chamber is configured such that its inner cavity forms a circulation loop. The circulation loop sequentially includes a forward path chamber and a return path chamber along the driving direction of the working fluid design, so that the steam generated at the evaporation end can first pass through the forward path chamber, then through the return path chamber, and then return to the evaporation end along the first direction of the circulation loop, and part of the steam will condense into a liquid phase along the way. Further, a preset bending part is coupled to the forward path chamber, so that the steam enters the inner cavity of the longitudinal part when it is in the forward path chamber. The provision and position of the longitudinal part can form a synergy.

[0164] For an electronic device where the thickness space is the most precious, the width space is the second most precious, and the length space is the least precious, the small thickness of the first plate-shaped cavity can save the occupation of the thickness space, and then the large thickness of the second plate-shaped cavity extended in the vertical direction can occupy the width space or the length space. Especially when the electronic device is a mobile phone, the benefits of the first implementation manner are more obvious. In one embodiment, the internal space of the mobile phone has a three-section structure (including an upper section, a middle section, and a lower section). The contents of the upper section are, for example, a main board, a processor, a memory, a camera, a flash, a processor, and / or a storage device, or the target heat source to be accommodated is, for example, a processor, a memory, an interface controller, or a radio frequency module; the contents of the middle section are, for example, a single battery (or multiple batteries), a strip-shaped plate-shaped circuit board, a graphene heat dissipation film, a wireless charging coil, a flexible cable, or a button; the contents of the lower section are, for example, a vibration motor, a microphone, a fingerprint module, a secondary board, or an external data line interface. When the mobile phone is designed tightly inside the body to make full use of the space inside the body, the benefits of the embodiments of the present disclosure are more obvious.

[0165] It should be noted that for the heat pipe in the prior art and the 3D heat pipe or heat pipe in the present disclosure, both have an evaporation end (or evaporation section) coupled to the target heat source and formed by heating, and a condensation end (or evaporation section) far from the evaporation end. Optionally, the section between the evaporation end and the condensation end is defined as an adiabatic section. In some uses, the technical term heat pipe is understood to have one end and a certain length section near it configured as the evaporation end, and the remaining section except the evaporation end is configured as the condensation end. It can be understood that the evaporation end (or evaporation section) is one end of the heat pipe and a certain length near it, and the condensation end (or evaporation section) is the other end of the heat pipe and a certain length near it.

[0166] It should be noted that in the specification, claims, and drawings of the present disclosure, the terms "a", "first", "second", "third", "fourth", "fifth", etc. (if any) are used to distinguish similar objects and do not necessarily describe a specific order or sequence. Thus, the features defined by "a", "first", "second", etc. may explicitly or implicitly include at least one such feature. The terms "above" and "multiple" expressing quantity mean two or more than two. The terms "comprising", "having", and any of their variations are intended to cover non-exclusive inclusion.

[0167] It should be understood that regarding the orientation description, such as up, down, front, back, left, right, inside, outside, top, bottom, horizontal, side, etc. (if any) indicating the orientation or position relationship, and near, far, etc. indicating the relative position relationship, are only for the convenience and simplification of describing the present disclosure, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as a limitation to the present disclosure.

[0168] The above are only the preferred embodiments of the present disclosure. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present disclosure, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of this application. Without conflict, the various aspects, embodiments and features in the embodiments of the present disclosure can be combined with each other.

Claims

1. A mobile phone with an improved stacking architecture, characterized in that: The mobile phone comprises: A multi-section structure, comprising an upper section having a first component, a middle section having a second component and a lower section, wherein the first component comprises a first stacked device layer and a first outer frame, and the second component comprises a plurality of second batteries located in the same layer or a second battery and a second outer frame or a second battery and a stacked device layer and a second outer frame located in the same layer; a 3D heat spreader, which is divided into an evaporation end and a condensation end; wherein: The evaporation end is configured to be distributed in the upper section and perpendicular to the thickness direction of the mobile phone; the condensation end is configured to have an L-shaped connecting cavity, the L-shaped connecting cavity has a vertical plate cavity and a horizontal plate cavity, the horizontal plate cavity is parallel to the evaporation end, and the condensation end corresponding to the vertical plate cavity is located in a plate-shaped cavity formed by adjacent components on the same layer at a certain distance in the mobile phone; The plate-shaped cavity further includes: being configured to be located in the middle section and sandwiched between the plurality of second batteries included in the second component or between the second battery and any two of the second stacked device layer and the second outer frame, and the plate-shaped cavity is configured to be parallel to the length of the mobile phone, or being configured to be located in the upper section and sandwiched between the first stacked device layer included in the first component and the first outer frame, and the plate-shaped cavity is parallel to the length direction of the mobile phone, or being configured to be located between the upper section and the middle section or between the middle section and the lower section, and the plate-shaped cavity is parallel to the width direction of the mobile phone; The 3D heat spreader also includes: a transverse part and a longitudinal part, the longitudinal part is the part of the condensation end corresponding to the longitudinal plate cavity, and the transverse part is the part of the 3D heat spreader except the longitudinal part, the transverse plate cavity of the evaporation end and the L-shaped connecting cavity are both included in the transverse part, and the transverse part is perpendicular to the thickness direction of the mobile phone.

2. The mobile phone according to claim 1, characterized in that: The mobile phone also includes: A middle frame in the mobile phone has a hollow area or a recessed area; the hollow area or the recessed area is configured to seat the lateral portion; The bottom surface of the transverse portion is provided with the longitudinal portion; the top surface of the transverse portion is parallel to the bottom surface, and the top surface faces the screen of the mobile phone; The area of ​​the bottom surface corresponding to the evaporation end is configured to be thermally coupled to a target heat source in the mobile phone, and the target heat source is located below the area of ​​the bottom surface corresponding to the evaporation end; The middle frame and the battery are stacked in a direction perpendicular to the thickness of the mobile phone.

3. The mobile phone according to claim 2, characterized in that: The mobile phone also includes: A first longitudinal rib is provided between the upper section and the middle section for reinforcing the overall structural strength of the mobile phone, and / or a second longitudinal rib is provided between the middle section and the lower section for reinforcing the overall structural strength of the mobile phone; wherein the first longitudinal rib and the second longitudinal rib are both parallel to the width direction and the thickness direction of the mobile phone; The longitudinal portion has no overlapping projection with the first longitudinal rib and / or the second longitudinal rib of the mobile phone, and is located in the same layer.

4. The mobile phone according to claim 3, characterized in that: The mobile phone also includes: The plate-shaped cavity is configured to be located between the upper section and the middle section, and the plate-shaped cavity is parallel to the width direction of the mobile phone; wherein, The plate-shaped cavity also includes: sandwiched between the upper side of the first longitudinal rib and the lower side of the first stacked device layer included in the upper section, or sandwiched between the lower side of the first longitudinal rib and the upper side of the second battery included in the middle section.

5. The mobile phone according to claim 3, characterized in that: The mobile phone also includes: The plate-shaped cavity is configured to be located between the middle section and the lower section, and the plate-shaped cavity is parallel to the width direction of the mobile phone; wherein, The plate-shaped cavity also includes: sandwiched between the upper side of the second longitudinal rib and the lower side of the second battery included in the middle section, or sandwiched between the lower side of the second longitudinal rib and the upper side of the third stacked device layer included in the lower section.

6. The mobile phone according to claim 2, characterized in that: The mobile phone also includes: The plate-shaped cavity is configured to be located in the middle section and sandwiched between the plurality of second batteries included in the second assembly; wherein, The plurality of second batteries are located in the same layer and are in a left-right or up-down relationship, and are adjacent and a certain distance apart to form the plate-shaped cavity; the plurality is two.

7. The mobile phone according to any one of claims 4 to 6, characterized in that: The mobile phone also includes: The longitudinal portion and the transverse portion form a T-shaped connecting plate cavity; the L-shaped connecting cavity is contained in the T-shaped connecting plate cavity.

8. The mobile phone according to any one of claims 1 to 6, characterized in that: The 3D vapor chamber included in the mobile phone is obtained by the following manufacturing method, which includes the following steps S11 to S12: S11, prefabricating a flat-plate-shaped vapor chamber, wherein one end of the flat-plate-shaped vapor chamber is configured as an evaporation end and the other end is configured as a condensation end, and a preset area on the top surface or the bottom surface of the evaporation end is configured to be coupled to a target heat source surface, and The flat-plate heat spreader is configured to have a preset bend, and the preset bend coincides with an orthogonal plane passing through the flat-plate heat spreader, wherein: The condensation end is provided with the preset bend, and the orthogonal plane does not pass through the evaporation end, or, The condensing end is provided with the preset bending part, and the orthogonal plane passes through the evaporating end, and the evaporating end and the condensing end on one side of the orthogonal plane are connected to each other, and the evaporating end and the condensing end on the other side are not connected to each other, or, The preset bending part is distributed at the boundary between the condensation end and the evaporation end, and the orthogonal plane does not pass through the evaporation end; S12, bend the flat-plate heat spreader along the preset bending point so that the flat-plate heat spreader is divided into two parts perpendicular to each other, and the two parts are respectively configured as the transverse part and the longitudinal part, thereby obtaining the 3D heat spreader corresponding to the transverse part and the longitudinal part.

9. The mobile phone according to claim 8, characterized in that: The manufacturing method of the 3D vapor chamber included in the mobile phone further includes: The thickness of the longitudinal portion is greater than the thickness of the transverse portion; or, the inner cavity of the transverse portion is constructed as a loop type or a forked U shape.

10. The mobile phone according to claim 8, characterized in that: The manufacturing method of the 3D vapor chamber included in the mobile phone further includes: A first preset area of ​​the shell inner wall surface of the transverse portion is provided with a first capillary structure core, and the evaporation end is distributed with the first preset area, and the shell inner wall surface of the longitudinal portion is flat, or is provided with a groove structure, or is subjected to a hydrophilic treatment or a hydrophobic treatment, or a second preset area is provided with a second capillary structure core, wherein the first capillary structure core is coupled to the groove structure or the second capillary structure core; or, A first preset area on the inner wall surface of the shell of the transverse portion is provided with a first capillary structure core, and a second preset area is provided with a first groove structure, the first preset area is distributed on the evaporation end, the first groove structure is coupled to the first capillary structure core, and the inner wall surface of the shell of the longitudinal portion is constructed to be flat or provided with a second groove structure or is subjected to hydrophilic treatment or hydrophobic treatment or a second capillary structure core is provided in a third preset area, wherein the first capillary structure core is coupled to the second groove structure or the second capillary structure core, and the first groove structure is coupled to the second groove structure or the second capillary structure core.

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