CN109640606B - Heat dissipation system and terminal equipment - Google Patents

Abstract

The present disclosure provides a heat dissipation system and a terminal device, the heat dissipation system is applied to the terminal device, and comprises a circulation pipeline and a one-way valve installed on the circulation pipeline, wherein the circulation pipeline is used for accommodating a heat exchange medium and supplying the heat exchange medium to circularly flow; the circulating pipeline comprises a heat dissipation section and at least one air bag section, and the air bag section is made of elastic materials; the one-way valve is used for enabling the heat exchange medium to flow in a one-way circulation mode. The air pressure in the air bag section is changed by pressing, so that the heat exchange medium in the circulating pipeline flows directionally, the heat dissipation efficiency can be improved, the heat dissipation effect can be adjusted at any time according to the situation during use, and the control mode is flexible and simple.

Description

Heat dissipation system and terminal equipment

Technical Field

The disclosure relates to the technical field of terminal equipment, in particular to a heat dissipation system and terminal equipment.

Background

With higher and higher dominant frequencies and higher power consumption of electronic products such as mobile phones, tablet computers and notebook computers, the calorific value of the electronic products is higher and higher. And these electronic products often are littleer and more and adopt the integral type design, and the heat that its produced accumulates in inside narrow and small space, can't effectively spill.

For example, a mobile phone is provided with a heat dissipation material in contact with a main board of the mobile phone, and local hot spots are diffused through thermal contact conduction. However, the space inside the mobile phone is small, and the heat dissipation effect is poor only through conduction heat dissipation, so that the service life of the mobile phone is reduced; moreover, the heat generated inside the mobile phone is transferred to the housing, which results in an excessively high temperature of the housing.

It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.

Disclosure of Invention

The purpose of the present disclosure is to provide a heat dissipation system and a terminal device, which can improve the heat dissipation effect of the terminal device.

According to an aspect of the present disclosure, there is provided a heat dissipation system for a terminal device, the heat dissipation system including:

the circulating pipeline can be arranged in a shell of terminal equipment, is used for containing a heat exchange medium and allows the heat exchange medium to circularly flow; the circulating pipeline comprises a heat dissipation section and at least one air bag section, and the air bag section is made of elastic materials;

and the one-way valve is connected in series with the circulating pipeline and is used for enabling the heat exchange medium to flow in a one-way circulating mode.

In one exemplary embodiment of the present disclosure, the heat exchange medium includes a first component having a boiling point of m, 40 ℃. ltoreq. m.ltoreq.100 ℃.

In an exemplary embodiment of the present disclosure, the heat dissipation section is plural in number and includes at least a first heat dissipation section and a second heat dissipation section extending along a curved trajectory.

In an exemplary embodiment of the present disclosure, the check valve includes:

the valve casing is connected in series with the circulating pipeline and is provided with a valve cavity, a liquid inlet and a liquid outlet, and the inner diameter of the valve cavity is gradually increased from the liquid inlet to the liquid outlet;

the blocking piece is arranged at the liquid outlet and is provided with a through hole through which the heat exchange medium flows;

the valve core is arranged in the valve cavity, positioned between the liquid inlet and the blocking piece and can move in the valve cavity, the maximum cross-sectional area of the valve core along the radial direction of the valve cavity is larger than that of the liquid inlet, and the maximum cross-sectional area of the valve core along the radial direction of the valve cavity is smaller than that of the liquid outlet.

In an exemplary embodiment of the disclosure, at least one of the check valves is connected in series between the adjacent heat dissipation section and the airbag section, and a valve housing of the check valve and the heat dissipation section connected with the valve housing are of an integral structure.

According to an aspect of the present disclosure, there is provided a terminal device including:

a housing;

the heat dissipation system of any one of the above claims, disposed within the housing.

In an exemplary embodiment of the disclosure, the housing is provided with a through hole at a position corresponding to the airbag section, and at least a partial region of the airbag section protrudes out of the through hole.

In an exemplary embodiment of the present disclosure, the terminal device further includes:

the battery is rotationally connected with the shell of the terminal equipment:

and the circuit board is arranged in the shell and is electrically connected with the battery through the flexible circuit board.

In an exemplary embodiment of the disclosure, at least a portion of the heat dissipation section is disposed on a surface of the battery proximate to an interior of the housing.

In an exemplary embodiment of the present disclosure, the terminal device further includes:

the heat conducting sheet is arranged on the surface of the battery close to the inner part of the shell;

at least part of the heat dissipation section in the heat dissipation system is laid on the surface of the heat conducting fin.

In an exemplary embodiment of the present disclosure, the terminal device further includes:

and the radiating fins are arranged on the surface, far away from the heat conducting fins, of at least part of radiating sections in the radiating system.

The circulation pipeline in the heat dissipation system of the present disclosure includes a heat dissipation section and an air bag section, and the internal air pressure is changed by pressing the air bag section, so that the heat exchange medium in the circulation pipeline is caused to flow directionally, and the heat of the heat dissipation point is absorbed by the heat dissipation section, so as to reduce the temperature of the equipment. Meanwhile, the temperature of the radiating point rises to cause partial vaporization of the heat exchange medium, the gas pressure in the circulating pipeline is increased, and then the liquid medium is pushed to flow according to the direction limited by the one-way valve, so that the fluid in the whole circulating pipeline is driven to flow, and the radiating effect is improved.

Compared with the contact conduction heat dissipation which only depends on a heat dissipation material, on one hand, the heat dissipation device can drive the cooling liquid to flow, so that the heat dissipation efficiency is improved, on the other hand, the pressing force and the frequency of the air bag section are adjusted, the flowing speed of a heat exchange medium can be changed, the heat dissipation effect is adjusted according to the temperature condition of equipment, and the control mode is flexible and simple.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.

Fig. 1 is a schematic diagram of a terminal device according to an embodiment of the disclosure;

FIG. 2 is a schematic structural diagram of a heat dissipation system according to an embodiment of the disclosure;

FIG. 3 is a schematic structural view of a heat dissipating section and an air bag section of a heat dissipating system according to an embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of a check valve of a heat dissipation system according to an embodiment of the disclosure;

fig. 5 is a schematic structural diagram of a terminal device according to an embodiment of the disclosure;

fig. 6 is a schematic structural diagram of a terminal device according to an embodiment of the disclosure at a viewing angle when a battery is turned on;

fig. 7 is a schematic view of a rotational connection structure of a battery of a terminal device according to an embodiment of the present disclosure;

fig. 8 is a schematic structural diagram of a battery and a heat dissipation section of a terminal device according to an embodiment of the disclosure;

fig. 9 is a schematic structural diagram of a terminal device according to an embodiment of the disclosure at another viewing angle when a battery is turned on;

fig. 10 is a partial schematic view of a terminal device according to an embodiment of the disclosure.

In the figure, 1, a mobile phone; 2. a circulation line; 3. a heat dissipation section; 4. an air bag section; 5. a one-way valve; 6. a housing; 7. a through hole; 8. a battery; 9. a circuit board; 10. a rotating shaft; 11. a flexible circuit board; 12. a heat conductive sheet; 13. a heat sink; 31. a first heat dissipation section; 32. a second heat dissipation section; 33. a third heat dissipation section; 34. a fourth heat dissipation section; 35. a fifth heat dissipation section; 36. a sixth heat dissipation section; 37. a seventh heat dissipation section; 41. a first balloon segment; 42. a second balloon section; 43. a third balloon section; 44. a fourth balloon section; 51. a valve housing; 52. a blocking member; 53. a sphere; 511. a valve cavity; 512. a liquid inlet; 513. and a liquid outlet.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.

The embodiment of the disclosure provides a heat dissipation system, which is applied to a terminal device and used for dissipating heat for the terminal device. The terminal device of the present disclosure refers to a device that inputs programs and data to a computer or receives a processing result output by the computer via a communication facility, such as a mobile phone, a tablet computer, a notebook computer, and an intercom, and is not listed here, and the following description will be given taking the terminal device as a mobile phone as an example:

as shown in fig. 1-2, the heat dissipation system of the embodiment of the present disclosure includes a circulation pipe 2 installed in a mobile phone 1, where the circulation pipe 2 can be installed in a housing of a terminal device, and is used for accommodating a heat exchange medium and supplying the heat exchange medium to circulate; the circulation pipeline 2 comprises a heat dissipation section 3 and at least one air bag section 4, and the air bag section 4 is made of elastic materials. The circulating pipeline 2 is provided with a one-way valve 5 for making the heat exchange medium flow in a one-way circulation manner.

The air pressure in the air bag section 4 is changed by pressing, so that the heat exchange medium in the circulating pipeline 2 can be promoted to flow directionally, the heat of the heat dissipation point is absorbed and transferred to other parts, and the local temperature in the mobile phone 1 is reduced. Meanwhile, the temperature of the radiating point rises to cause partial vaporization of the heat exchange medium, the gas pressure in the circulating pipeline 2 is increased, and then the liquid medium is pushed to flow according to the direction limited by the one-way valve 5, so that the fluid in the whole circulating pipeline 2 is driven to flow, and the radiating effect is improved. The pressing force and frequency of the air bag section 4 are adjusted, the flowing speed of the heat exchange medium can be changed, and then the heat dissipation effect is adjusted according to the temperature condition of the mobile phone. Compared with the heat dissipation system which only depends on the contact conduction of the heat dissipation material, the heat dissipation system can improve the heat dissipation efficiency, and can control the heat dissipation at any time according to the needs when in use, and the control mode is flexible and simple.

The following describes the heat dissipation system according to the embodiment of the present disclosure in detail:

the heat exchange medium of the present disclosure uses a heat exchange fluid, which can absorb heat emitted from devices inside the mobile phone, such as water, ethanol, methanol, etc. The heat exchange fluid may circulate in a certain direction in the radiator section 3 and the air bag section 4 of the circulation pipe 2. The heat dissipation section 3 of the circulation pipeline 2 is mainly disposed at a portion with a high heat value inside the mobile phone 1, such as a main board and a socket. The laying mode of the heat dissipation section 3 can be designed according to the laying area and the heat dissipation efficiency, and can be laid linearly or in a bending mode, such as a straight line shape, a broken line shape, an S shape and the like. The inner diameter of the heat dissipation section 3 can be a fixed value or can be changed. The heat dissipation section 3 can be made of metal pipelines such as aluminum pipes and copper pipes, and can also be made of other non-metal pipelines. The air bag sections 4 can be disposed at the edge of the mobile phone 1 where fingers can easily press, such as the four corners of the mobile phone 1. The material of the air bag section 4 may be rubber, polyethylene plastic, polyvinyl chloride plastic, or other materials that have elasticity and sealing performance and are insoluble in the heat exchange fluid. The heat dissipation section 3 of the present disclosure is disposed inside the mobile phone 1, and the air bag section 4 may be disposed inside the mobile phone 1 or outside the mobile phone 1.

For example, in the present exemplary embodiment, as shown in fig. 1-2, the airbag sections include a first airbag section 41, a second airbag section 42, a third airbag section 43, and a fourth airbag section 44, and the four airbag sections are all right-angled and located at four corners of the mobile phone 1. The heat dissipation section 3 includes a first heat dissipation section 31, a second heat dissipation section 32, a third heat dissipation section 33, a fourth heat dissipation section 34, a fifth heat dissipation section 35, a sixth heat dissipation section 36, and a seventh heat dissipation section 37. The first three radiating sections are laid at three main radiating points of the mobile phone, and the last four radiating sections are wound at the edge of the mobile phone. The first heat dissipation section 31 is thin in pipe diameter and is laid above the main board of the mobile phone 1 along an S-shaped curved track, the second heat dissipation section 32 is also laid on the surface of the battery 8 of the mobile phone 1 along the S-shaped curved track, and the third heat dissipation section 33 is a straight pipe with a thick diameter and is located below the lamp socket of the mobile phone 1. The seven heat dissipation sections and the four airbag sections are connected in sequence, and the third heat dissipation section 33 is connected between the first airbag section 41 and the second airbag section 42; the fifth radiating section 35 is connected between the second air bag section 42 and the third air bag section 43, the sixth radiating section 36 is connected between the third air bag section 43 and the fourth air bag section 44, the seventh radiating section 37 is connected between the fourth air bag section 44 and the first radiating section 31, the second radiating section 32 and the fourth radiating section 34 are sequentially connected in series between the fourth air bag section 44 and the first air bag section 41, and the seven radiating sections and the four air bag sections are connected to form a closed circulation pipeline 2. Pressing any one of the air bag sections 4 can change the air pressure in the circulating pipeline 2, so as to push the fluid to flow and accelerate the heat dissipation. As shown in fig. 2, the fourth heat dissipation section 34 to the seventh heat dissipation section 37 are disposed along the outer ring of the mobile phone, so as to extend the length of the circulation pipeline 2 as much as possible and increase the volume of the heat exchange medium, thereby improving the heat dissipation effect.

For convenience of description, the division of the heat dissipation section in the present embodiment is determined according to the main distribution area of the heat dissipation section, and the division of the heat dissipation section may have other forms. In addition, the number of the heat dissipation sections 3 and the number of the air bag sections 4 can be other numbers, and the heat dissipation sections can be specifically arranged according to needs, for example, more heat dissipation sections can be arranged for terminal equipment with more heating points, and more air bag sections can be arranged for equipment with larger size. The laying mode of the heat dissipation section can also be in other shapes, and the detailed description is omitted here.

In the exemplary embodiment, as shown in fig. 3, the left end of the third heat dissipation section 33 under the socket of the mobile phone 1 is connected to the first air bag section 41, the right end is connected to the second air bag section 42, the left end of the first air bag section 41 is connected to the fourth heat dissipation section 34, and the right end of the second air bag section 42 is connected to the fifth heat dissipation section 35. Taking the left to the right in the figure as the fluid flow direction, a one-way valve 5 is installed at the outlet of the fourth heat dissipation section 34 (the inlet of the first air bag section 41), another one-way valve 5 is installed at the outlet of the third heat dissipation section 33 (the inlet of the second air bag section 42), and the communication directions of the two one-way valves 5 are consistent with the fluid flow direction. The fluid comprises a first component, the boiling point of the first component is m, and m is more than or equal to 40 ℃ and less than or equal to 100 ℃. The two check valves 5 form a relatively closed space between the third heat dissipation section 33 and the first air bag section 41, when the temperature at the lamp socket reaches the boiling point of the first component, the first component is boiled and vaporized, so that a large amount of gas is generated, the air pressure in the closed space is changed, and then the liquid in the third heat dissipation section 33 is pushed to flow according to the direction limited by the check valves 5, so that the fluid in the whole circulation pipeline 2 is driven to flow for heat dissipation. Even if the temperature at the lamp opening is close to but not reaching the boiling point, the air pressure is changed due to the rapid evaporation and vaporization of the fluid, so that the fluid is pushed to flow, and the effect of driving the fluid to circulate actively can be achieved. Therefore, the mode can also drive the fluid to actively flow in the circulating pipeline 2 together with the pressing of the air bag section, and certainly, when the air bag section is not pressed, the mode can also realize the active circulation of the fluid and be mutually matched with the pushing of the air bag section, thereby achieving the purpose of improving the heat dissipation efficiency. In other embodiments, the two check valves 5 may be disposed at other positions, such as at the outlets of the two air bag sections, or at the inlet and the outlet of the third heat dissipation section 33, or at the inlet of the first air bag section 41 and the outlet of the second air bag section 42, or at both ends of a part of the pipeline of the third heat dissipation section 33, etc., as long as a relatively closed space is formed between the two check valves 5, so that the vaporized gas can sufficiently push the internal liquid to flow.

The boiling point of the first component can be selected according to the temperature of a heat dissipation point inside the mobile phone and the heat dissipation requirement, and can be ethanol, acetone, ethyl acetate and the like. For example, the boiling point m of the component is more than or equal to 40 ℃ and less than or equal to 100 ℃, if the boiling point temperature is too low, for example, lower than 40 ℃, the devices in the mobile phone 1 can normally operate without heat dissipation requirements, and the first component boils and vaporizes too early, so that the first component does not play a role in assisting in improving the heat dissipation efficiency when the temperature is raised and heat dissipation is required; if the boiling temperature is too high, for example, higher than 100 ℃, the fluid is difficult to vaporize all the time, and the auxiliary heat dissipation effect is lost. Therefore, it is necessary to select appropriate components according to the temperature of the heat dissipation point inside the mobile phone and the heat dissipation requirement. The first component absorbs heat at the radiating point to be vaporized, and when the temperature in the mobile phone is reduced, the vaporized first component can be converted into liquid again and returns to the fluid for recycling. The heat exchange medium may contain only the first component, or may contain other components in addition to the first component, such as water, etc., and the present disclosure is not particularly limited thereto.

It will be understood by those skilled in the art that similar structures may be provided in other heat dissipating sections 3, for example, one-way valves 5 are installed on two sides of a part of the pipeline of the first heat dissipating section 31 or the second heat dissipating section 32, and the first components of the multiple pipeline are vaporized together to drive the fluid to flow, so as to further increase the fluid flowing speed and accelerate heat dissipation, that is, the number of the one-way valves 5 may be multiple, as long as the conducting direction of each one-way valve 5 is the same as the flowing direction of the heat exchange medium, so that the heat exchange medium can circulate along the loop circulation. Of course, in other embodiments, when the circulation pipeline is short and the first component can push the internal heat exchange fluid to flow through vaporization in the closed space formed by the whole circulation pipeline, the whole circulation pipeline can also be provided with only one-way valve to ensure that the heat exchange fluid and the vaporized first component circulate in one direction.

In the present exemplary embodiment, as shown in fig. 4, the two check valves 5 each include a valve housing 51, a stopper 52, and a valve element, which is structured as a ball 53 in the present exemplary embodiment, and which is connected in series to the circulation line 2. Wherein the left valve housing 51 is communicated between the fourth heat dissipation section 34 and the first air bag section 41, and the right valve housing 51 is communicated between the third heat dissipation section 33 and the second air bag section 42. The two valve housings 51 are flared and have a valve cavity 511, a liquid inlet 512 and a liquid outlet 513, and the inner diameter of the valve cavity 511 gradually increases from the liquid inlet 512 to the liquid outlet 513. The blocking member 52 is provided at the liquid outlet 513 and has a through hole through which the heat exchange medium flows. The ball 53 is disposed in the valve chamber 511 between the inlet 512 and the blocking member 52, and can move in the valve chamber 511, so that a certain space is required between the inlet 512 and the outlet 513 for gas to move. The diameter of the sphere 53 is larger than the caliber of the liquid inlet 512 and smaller than the caliber of the liquid outlet 513. When fluid flows in from the inlet port 512 of the valve housing 51, the ball 53 is pushed to move toward the outlet port 513, and since the maximum cross-sectional area of the ball 53 is larger than that of the inlet port 512 in the radial direction of the valve chamber, the ball 53 is blocked by the blocking member 52, and the fluid flows out of the outlet port from the through hole of the blocking member 52. If the fluid reversely flows into the valve chamber 511 from the fluid outlet 513, the ball 53 is pushed to move toward the fluid inlet 512, and the diameter of the ball 53 is larger than that of the fluid inlet, the fluid inlet 512 is blocked to close, so that the fluid cannot flow out from the fluid inlet 512, thereby forming a principle of controlling the unidirectional flow of the fluid. The ball 53 may be made of steel or rubber, and in other embodiments, the valve core may also be made of other structures, such as a cylinder, and as long as the maximum cross-sectional area of the valve core along the radial direction of the valve cavity is larger than the cross-sectional area of the liquid inlet and smaller than the cross-sectional area of the liquid outlet, when the fluid flows in the opposite direction, the valve core blocks the liquid inlet, and the flow direction of the fluid can be controlled. The stopper 52 may be made of steel or the like, and may have a mesh or grid structure. The check valve 5 is simple in structure and low in cost, and can realize flow direction control of fluid in a micro pipeline.

In the present exemplary embodiment, as shown in fig. 4, the left side valve housing 51 may be integrally formed with the fourth heat dissipation section 34, and similarly, the right side valve housing 51 may be integrally formed with the third heat dissipation section 33. Namely, the valve casing structure with gradually flaring is directly formed integrally by the material of the heat dissipation section when the heat dissipation section 3 is processed, so that the structure of the check valve 5 can be simplified, the valve casing 51 does not need to be formed separately, and the installation mode of the check valve 5 is simplified. The outlet of the valve housing 51 in this embodiment can be directly connected to the first air bag section 41 or the second air bag section 42, and in other embodiments, if the check valve 5 is located at other positions of the circulation pipeline 2, a partially expanded valve housing structure can be formed at the corresponding position by an integral forming process.

The embodiment of the present disclosure further provides a terminal device with the above heat dissipation system, taking a mobile phone as an example, as shown in fig. 5 to 6, including a housing 6, where the above heat dissipation system is disposed in the housing 6.

In the exemplary embodiment, as shown in fig. 5 to fig. 6, the heat dissipation system of the mobile phone 1 has four air bag sections, and correspondingly, through holes 7 are provided at positions of the mobile phone housing 6 corresponding to the four air bag sections 4, and at least a partial region of the air bag section 4 extends out of the through holes 7, so that a user can conveniently press the air bag section 4 to achieve accelerated heat dissipation. In addition, the air bags are arranged at the four corners of the mobile phone, so that a buffering effect is provided for the mobile phone, and the risk of screen breaking of the mobile phone is reduced. Similarly, if the heat dissipation section 3 has a portion (the fourth heat dissipation section 34 to the seventh heat dissipation section 37) laid around the edge of the mobile phone, a through groove may be formed in a corresponding portion of the housing 6 to expose the portion of the heat dissipation section to the outside, thereby facilitating heat dissipation from the heat dissipation section and improving the heat dissipation effect.

In the present exemplary embodiment, the mobile phone 1 further includes a battery 8 and a circuit board 9, as shown in fig. 7-8, one side of the battery 8 is rotatably connected to one side of the mobile phone housing 6, so that the battery 8 can be folded around the rotating shaft 10 to form a flip-open type battery. The circuit board 9 is arranged in the shell 6 and is electrically connected with the battery 8 through the flexible circuit board 11, so that the battery 8 can still supply power for the mainboard of the mobile phone when being opened, and the use of the mobile phone is not influenced. When the heat in the mobile phone is high, the battery 8 can be turned over to expose the internal devices, so that the heat can be released out of the mobile phone quickly to achieve the purpose of heat dissipation. Meanwhile, as shown in fig. 5, the battery 8 can also serve as a mobile phone support when being turned over, and better use experience is brought to a user by adjusting the turning-over angle. When the battery 8 is closed, it is in the shape of a conventional mobile phone, as shown in fig. 9. The flexible circuit board 11 may connect the battery 8 with the main board of the mobile phone 1 in various ways, such as being disposed around the rotation shaft 10 (as shown in fig. 7), etc., which is not limited in this disclosure.

In the present exemplary embodiment, since the battery is also a part that is easy to generate heat inside the mobile phone, at least a part of the heat dissipation section is laid on the surface of the battery near the inside of the housing, as shown in fig. 8, a second heat dissipation section 32 is laid on the surface of the battery 8 near the inside of the housing 6, and in order to increase the heat dissipation effect, the second heat dissipation section 32 is bent to be laid in an S shape. Because the battery 8 can be turned over and folded, the two ends of the second heat dissipation section 32 need to be bent along with the battery 8 to be connected with other heat dissipation sections 3 or air bag sections in the mobile phone 1, so that the heat dissipation section is suitable for being made of materials which are easy to bend, such as aluminum materials, and other parts which do not need to bend can be made of other materials, such as copper, steel and the like.

In the present exemplary embodiment, as shown in fig. 10, the surface of the battery near the inside of the case is provided with a thermally conductive sheet 12, and the second heat dissipation section 32 is laid on the surface of the thermally conductive sheet 12. The heat conducting sheet 12 is used for absorbing the heat on the surface of the battery and enabling the heat to be uniformly dispersed on the heat conducting sheet 12, and then the heat is dissipated by the heat dissipating section, so that the double heat dissipating effect on the battery 8 is achieved. Meanwhile, heat is more uniformly dispersed on the heat conducting fins 12, and the heat dissipation effect of the heat dissipation section 3 is better. The heat conducting sheet 12 is preferably in a sheet shape, is attached to the surface of the battery 8 sheet, and conducts heat uniformly. The heat conducting sheet 12 includes, but is not limited to, gold, silver, copper, aluminum, graphite, and the like. The graphite heat conducting sheet 12 is preferably a graphite heat conducting sheet, has good heat conductivity, stable chemical property and good toughness, can be processed into a thin sheet, and is suitable for small-size electronic equipment such as the mobile phone 1.

In the present exemplary embodiment, as shown in fig. 10, the battery 8 is further provided with a heat sink 13 on the surface of the heat dissipating section away from the heat conductive sheet. Specifically, the heat dissipation sheet 13, the second heat dissipation section 32, and the heat conductive sheet 12 are stacked in this order, the heat conductive sheet 12 is closely attached to the surface of the battery 8, the heat dissipation sheet 13 is located at the outermost layer away from the battery 8, and the second heat dissipation section 32 is laid between the heat dissipation sheet 13 and the heat conductive sheet 12. The radiating fins are added on the basis of the heat conducting fins and the radiating sections, heat of the battery 8 can be transferred to the radiating fins 13 through contact heat conduction, radiating is further accelerated, and the radiating effect of the battery 8 is improved. When the battery 8 is turned over, the heat of each heat dissipation structure on the surface of the battery 8 can be quickly released to the outside of the mobile phone 1, so that the whole cooling is realized. The heat sink 13 includes, but is not limited to, gold, silver, copper, aluminum, steel, etc., and may have various shapes such as a plate, and a fin. For example, the heat sink 13 of the present embodiment has a saw-toothed cross section, which has a large heat dissipation area and a good heat dissipation effect.

In the above embodiment, a mobile phone is taken as an example, and the heat dissipation system of the present disclosure may also be used for other terminal devices such as a tablet computer, a notebook computer, and the like, and those skilled in the art can understand that the same or similar structures may be adopted in other devices to implement the scheme of the present disclosure, so as to improve the heat dissipation effect of the corresponding terminal device, and the specific structures are not described herein again.

Although relative terms, such as "upper" and "lower," may be used in this specification to describe one element of an icon relative to another, these terms are used in this specification for convenience only, e.g., in accordance with the orientation of the examples described in the figures. It will be appreciated that if the device of the icon were turned upside down, the element described as "upper" would become the element "lower". When a structure is "on" another structure, it may mean that the structure is integrally formed with the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via another structure.

The terms "a," "an," "the," "said," and "at least one" are used to indicate the presence of one or more elements/components/parts/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

Claims (8)

1. A terminal device, comprising:

the shell is provided with a through hole;

the heat dissipation system is arranged in the shell and comprises a circulating pipeline and a one-way valve, and the circulating pipeline is used for accommodating a heat exchange medium and allowing the heat exchange medium to circularly flow; the circulating pipeline comprises a heat dissipation section and at least one air bag section, the air bag section is made of elastic materials, the air bag section corresponds to the through hole in the shell, and at least part of area of the air bag section extends out of the through hole; the one-way valve is connected in series with the circulating pipeline and is used for enabling the heat exchange medium to flow in a one-way circulating mode; the heat exchange medium comprises a first component, wherein the boiling point of the first component is m, and m is more than or equal to 40 ℃ and less than or equal to 100 ℃.

2. The terminal device according to claim 1, wherein the heat dissipation section is plural in number and includes at least a first heat dissipation section and a second heat dissipation section extending along a curved trajectory.

3. The terminal device of claim 2, wherein the one-way valve comprises:

the valve casing is connected in series with the circulating pipeline and is provided with a valve cavity, a liquid inlet and a liquid outlet, and the inner diameter of the valve cavity is gradually increased from the liquid inlet to the liquid outlet;

the blocking piece is arranged at the liquid outlet and is provided with a through hole through which the heat exchange medium flows;

the valve core is arranged in the valve cavity, positioned between the liquid inlet and the blocking piece and can move in the valve cavity, the maximum cross-sectional area of the valve core along the radial direction of the valve cavity is larger than that of the liquid inlet, and the maximum cross-sectional area of the valve core along the radial direction of the valve cavity is smaller than that of the liquid outlet.

4. The terminal device of claim 3, wherein at least one of said one-way valves is connected in series between adjacent ones of said heat dissipating sections and said bladder section, and wherein a valve housing of said one-way valve is of unitary construction with said heat dissipating section to which said valve housing is connected.

5. The terminal device according to claim 1, wherein the terminal device further comprises:

the battery is rotationally connected with the shell of the terminal equipment:

and the circuit board is arranged in the shell and is electrically connected with the battery through the flexible circuit board.

6. The terminal device of claim 5, wherein at least a portion of the heat dissipating section is disposed on a surface of the battery proximate an interior of the housing.

7. The terminal device according to claim 6, wherein the terminal device further comprises:

the heat conducting sheet is arranged on the surface of the battery close to the inner part of the shell;

at least part of the heat dissipation section in the heat dissipation system is laid on the surface of the heat conducting fin.

8. The terminal device according to claim 7, wherein the terminal device further comprises:

and the radiating fins are arranged on the surface, far away from the heat conducting fins, of at least part of radiating sections in the radiating system.

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