CN109375747B

CN109375747B - Heat dissipation structure, mobile terminal and heat dissipation method

Info

Publication number: CN109375747B
Application number: CN201811323353.XA
Authority: CN
Inventors: 谭明
Original assignee: Nubia Technology Co Ltd
Current assignee: Nubia Technology Co Ltd
Priority date: 2018-11-08
Filing date: 2018-11-08
Publication date: 2023-03-31
Anticipated expiration: 2038-11-08
Also published as: CN109375747A

Abstract

The application provides a heat radiation structure, be applied to mobile terminal, heat radiation structure includes lid, box body and air current drive arrangement, the lid is provided with the through-hole, the box body with the lid is connected and is formed the wind channel cavity, the wind channel cavity with the through-hole intercommunication, air current drive arrangement accept in the wind channel cavity, air current drive arrangement with the through-hole cooperate with will the hot-air of wind channel cavity is followed discharge in the through-hole. Through heat radiation structure and mobile terminal that this application provided, can discharge in order to initiatively promote the hot air circulation of inner chamber and follow the through-hole through the work of air current drive arrangement to realize the effect of initiative cooling, because the wind channel cavity keeps apart with the inside accommodating space who is used for acceping components and parts of mobile terminal, reduce the contact of dust and steam and the inside components and parts of mobile terminal effectively, with radiating effect and the life of being suitable for of improvement mobile terminal components and parts.

Description

Heat dissipation structure, mobile terminal and heat dissipation method

Technical Field

The present application relates to the field of communications technologies, and in particular, to a heat dissipation structure, a mobile terminal, and a heat dissipation method.

Background

Mobile terminals in the current market all adopt the design concept of a natural cooling system, transfer heat inside the mobile terminals to a screen and a rear cover through radiation and heat conduction, and exchange heat with the environment through the screen and the rear cover, so that the surface temperature of the mobile terminals is controlled. The mobile terminal adopting the natural convection heat dissipation system design comprises: screen, center, veneer, CPU, battery, back lid. The heat of the CPU is finally transferred to the screen and the rear cover through heat conduction, the screen and the rear cover exchange heat with the environment through radiation and natural convection, and due to the limitation of the heat dissipation surface area of the mobile terminal, the mobile terminal which determines the overall dimension has the design bottleneck of the theoretical maximum heat dissipation capacity under the condition of meeting the user experience. The heat dissipation risk that the surface temperature exceeds the standard can be caused by the fact that the heat dissipation of the application scene of the mobile terminal part with determined external dimension is larger than the theoretical maximum heat dissipation capacity of the equipment, particularly the heat dissipation of the equipment is concentrated in a local scene.

In order to solve the technical problem, at present, a fan part is added to a part of mobile terminal equipment to strengthen the heat dissipation of the mobile phone, external air is sucked into the mobile terminal equipment from an air inlet hole through an air inlet hole and an air outlet hole on the surface of the mobile terminal equipment for heat exchange, and then hot air is discharged from the air outlet hole to take away the heat of the system, so that the aims of strengthening the heat dissipation and reducing the surface temperature are fulfilled. However, the mobile terminal which is internally provided with the fan for forced convection heat dissipation has the advantages that due to the fact that a large amount of dust and water vapor exist in the external environment gas, when air enters the equipment, the external dust and the water vapor also enter the equipment at the same time, and after the mobile terminal is used for a long time, a large amount of dust inside the terminal gathers or an electronic device is influenced by the water vapor to generate equipment faults.

Disclosure of Invention

The main purpose of this application is to provide a heat radiation structure, mobile terminal and heat radiation method, aim at to the inside radiating in-process of taking the initiative of carrying on of mobile terminal, reduce the contact of dust and steam and the inside components and parts of mobile terminal to improve the radiating effect and the life of being suitable for of mobile terminal components and parts.

For realizing the above purpose, the application provides a heat radiation structure, is applied to mobile terminal, heat radiation structure includes lid, box body and air current drive arrangement, the lid is provided with the through-hole, the box body with the lid is connected and is formed the wind channel cavity, the wind channel cavity with the through-hole intercommunication, air current drive arrangement accept in the wind channel cavity, air current drive arrangement with the through-hole cooperate with the hot-air follow of wind channel cavity discharge in the through-hole.

Optionally, the through hole includes at least one first through hole and at least one second through hole, the airflow driving device is disposed opposite to the at least one first through hole, and the airflow driving device is matched with the at least one first through hole to introduce air into the air duct cavity and drive the air in the air duct cavity to flow and discharge from the at least one second through hole.

Optionally, the air duct cavity includes a first cavity and a second cavity, the first cavity is communicated with the second cavity, the first cavity is opposite to the at least one first through hole, and the second cavity is opposite to the at least one second through hole.

Optionally, the box body is connected with the cover body to form the air duct cavity with a stepped inner portion, and a first distance from a highest point of a first cavity of the air duct cavity to the cover body is greater than a second distance from a highest point of a second cavity of the air duct cavity to the cover body.

Optionally, the box body is connected with the cover body in a sliding manner, the box body can slide relative to the cover body, and the airflow driving device is accommodated in the air duct cavity and can slide relative to the cover body.

Optionally, the airflow driving device comprises at least one fan.

Optionally, the fan is 17 x 17mm or 15 x 15mm in size.

The application still provides a mobile terminal, mobile terminal includes display screen, center, components and parts and above-mentioned arbitrary heat radiation structure, display screen, center and the lid with the surface intercombination that the box body is connected becomes accommodating space, accommodating space is used for acceping components and parts, the wind channel cavity with accommodating space passes through the box body is isolated each other, the heat of components and parts with the box body carries out heat-conduction air current drive arrangement with the drive is cooperateed to the through-hole the heat of box body is followed discharge in the through-hole.

Optionally, the component includes a receiving location, and when the component and the heat dissipation structure are combined, the box is at least partially contained in the receiving location.

According to the heat dissipation structure, the mobile terminal and the heat dissipation method, the box body connected with the rear cover is arranged in the mobile terminal, the air duct cavity is formed inside the mobile terminal through the box body and the rear cover, the through hole is formed in the position, corresponding to the air duct cavity, of the rear cover, the air duct cavity is isolated from an accommodating space, used for accommodating components, inside the mobile terminal, and the air flow driving device is arranged in the air duct cavity. When the mobile terminal is in operation, heat of components of the mobile terminal is transferred to the box body through heat conduction and heat radiation, external air of the mobile terminal enters the air duct cavity through the through hole of the rear cover and exchanges heat with the box body, and then the air duct cavity works through the air flow driving device to actively promote the hot air in the inner cavity to circulate and be discharged from the through hole, so that the active cooling effect is realized, and the air duct cavity is isolated from an accommodating space inside the mobile terminal for accommodating the components, so that the contact between dust and water vapor and the components inside the mobile terminal is effectively reduced, and the heat dissipation effect and the service life of the components of the mobile terminal are improved.

The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.

Drawings

Fig. 1 is a schematic diagram of a hardware structure of an optional mobile terminal for implementing various embodiments of the present application;

FIG. 2 is a schematic diagram of a communication network system of the mobile terminal shown in FIG. 1;

fig. 3 is an exploded view of a heat dissipation structure according to an embodiment of the present application;

fig. 4 is a perspective view of a cover of a heat dissipation structure according to an embodiment of the present application;

fig. 5 is a perspective view of a case of a heat dissipation structure according to an embodiment of the present application;

fig. 6 is an exploded view of a mobile terminal according to an embodiment of the present application;

fig. 7 is a flowchart of a heat dissipation method according to an embodiment of the disclosure.

The implementation, functional features and advantages of the objectives of the present application will be further explained with reference to the accompanying drawings.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in itself. Thus, "module", "component" or "unit" may be used mixedly.

The terminal may be implemented in various forms. For example, the terminal described in the present invention may include mobile terminals such as a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a Personal Digital Assistant (PDA), a Portable Media Player (PMP), a navigation device, a wearable device, a smart band, a pedometer, and the like, and fixed terminals such as a Digital TV, a desktop computer, and the like.

The following description will be given by way of example of a mobile terminal, and it will be understood by those skilled in the art that the configuration according to the embodiment of the present invention can be applied to a fixed type terminal, in addition to elements particularly used for mobile purposes.

Referring to fig. 1, which is a schematic diagram of a hardware structure of a mobile terminal for implementing various embodiments of the present invention, the mobile terminal 100 may include: RF (Radio Frequency) unit 101, wiFi module 102, audio output unit 103, a/V (audio/video) input unit 104, sensor 105, display unit 106, user input unit 107, interface unit 108, memory 109, processor 110, and power supply 111. Those skilled in the art will appreciate that the mobile terminal architecture shown in fig. 1 is not intended to be limiting of mobile terminals, which may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.

The following describes each component of the mobile terminal in detail with reference to fig. 1:

the radio frequency unit 101 may be configured to receive and transmit signals during information transmission and reception or during a call, and specifically, receive downlink information of a base station and then process the downlink information to the processor 110; in addition, uplink data is transmitted to the base station. Typically, radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 101 can also communicate with a network and other devices through wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to GSM (Global System for Mobile communications), GPRS (General Packet Radio Service), CDMA2000 (Code Division Multiple Access 2000 ), WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), FDD-LTE (Frequency Division duplex Long Term Evolution), and TDD-LTE (Time Division duplex Long Term Evolution).

WiFi belongs to a short-distance wireless transmission technology, and the mobile terminal can help a user to receive and send emails, browse webpages, access streaming media and the like through the WiFi module 102, and provides wireless broadband internet access for the user. Although fig. 1 shows the WiFi module 102, it is understood that it does not belong to the essential constitution of the mobile terminal, and may be omitted entirely as needed within the scope not changing the essence of the invention.

The audio output unit 103 may convert audio data received by the radio frequency unit 101 or the WiFi module 102 or stored in the memory 109 into an audio signal and output as sound when the mobile terminal 100 is in a call signal reception mode, a call mode, a recording mode, a voice recognition mode, a broadcast reception mode, or the like. Also, the audio output unit 103 may also provide audio output related to a specific function performed by the mobile terminal 100 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 103 may include a speaker, a buzzer, and the like.

The a/V input unit 104 is used to receive audio or video signals. The a/V input Unit 104 may include a Graphics Processing Unit (GPU) 1041 and a microphone 1042, the Graphics processor 1041 Processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 106. The image frames processed by the graphic processor 1041 may be stored in the memory 109 (or other storage medium) or transmitted via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 may receive sounds (audio data) via the microphone 1042 in a phone call mode, a recording mode, a voice recognition mode, or the like, and may be capable of processing such sounds into audio data. The processed audio (voice) data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 101 in case of a phone call mode. The microphone 1042 may implement various types of noise cancellation (or suppression) algorithms to cancel (or suppress) noise or interference generated in the course of receiving and transmitting audio signals.

The mobile terminal 100 also includes at least one sensor 105, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 1061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 1061 and/or the backlight when the mobile terminal 100 moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when stationary, and can be used for applications of recognizing the gesture of the mobile phone (such as horizontal and vertical screen switching, related games, magnetometer gesture calibration), vibration recognition related functions (such as pedometer and tapping), and the like; as for other sensors such as a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which can be configured on the mobile phone, the description is omitted here.

The display unit 106 is used to display information input by a user or information provided to the user. The Display unit 106 may include a Display panel 1061, and the Display panel 1061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 107 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the mobile terminal. Specifically, the user input unit 107 may include a touch panel 1071 and other input devices 1072. The touch panel 1071, also referred to as a touch screen, may collect a touch operation performed by a user on or near the touch panel 1071 (e.g., an operation performed by the user on or near the touch panel 1071 using a finger, a stylus, or any other suitable object or accessory), and drive a corresponding connection device according to a predetermined program. The touch panel 1071 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 110, and can receive and execute commands sent by the processor 110. In addition, the touch panel 1071 may be implemented in various types, such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may include other input devices 1072. In particular, other input devices 1072 may include, but are not limited to, one or more of a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like, and are not limited to these specific examples.

Further, the touch panel 1071 may cover the display panel 1061, and when the touch panel 1071 detects a touch operation on or near the touch panel, the touch panel is transmitted to the processor 110 to determine the type of the touch event, and then the processor 110 provides a corresponding visual output on the display panel 1061 according to the type of the touch event. Although the touch panel 1071 and the display panel 1061 are shown in fig. 1 as two separate components to implement the input and output functions of the mobile terminal, in some embodiments, the touch panel 1071 and the display panel 1061 may be integrated to implement the input and output functions of the mobile terminal, and is not limited herein.

The interface unit 108 serves as an interface through which at least one external device is connected to the mobile terminal 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 108 may be used to receive input (e.g., data information, power, etc.) from external devices and transmit the received input to one or more elements within the mobile terminal 100 or may be used to transmit data between the mobile terminal 100 and external devices.

The memory 109 may be used to store software programs as well as various data. The memory 109 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, memory 109 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 110 is a control center of the mobile terminal, connects various parts of the entire mobile terminal using various interfaces and lines, performs various functions of the mobile terminal and processes data by operating or executing software programs and/or modules stored in the memory 109 and calling data stored in the memory 109, thereby integrally monitoring the mobile terminal. Processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 110.

The mobile terminal 100 may further include a power supply 111 (e.g., a battery) for supplying power to various components, and preferably, the power supply 111 may be logically connected to the processor 110 via a power management system, so as to manage charging, discharging, and power consumption management functions via the power management system.

Although not shown in fig. 1, the mobile terminal 100 may further include a bluetooth module or the like, which is not described in detail herein.

In order to facilitate understanding of the embodiments of the present invention, a communication network system on which the mobile terminal of the present invention is based is described below.

Referring to fig. 2, fig. 2 is an architecture diagram of a communication Network system according to an embodiment of the present invention, the communication Network system is an LTE system of a universal mobile telecommunications technology, and the LTE system includes a UE (User Equipment) 201, an e-UTRAN (Evolved UMTS Terrestrial Radio Access Network) 202, an epc (Evolved Packet Core) 203, and an IP service 204 of an operator, which are in communication connection in sequence.

Specifically, the UE201 may be the terminal 100 described above, and is not described herein again.

The E-UTRAN202 includes eNodeB2021 and other eNodeBs 2022, among others. The eNodeB2021 may be connected with other eNodeB2022 via backhaul (e.g., X2 interface), the eNodeB2021 is connected to the EPC203, and the eNodeB2021 may provide the UE201 with access to the EPC 203.

The EPC203 may include an MME (Mobility Management Entity) 2031, an hss (Home Subscriber Server) 2032, other MMEs 2033, an SGW (Serving gateway) 2034, a pgw (PDN gateway) 2035, and a PCRF (Policy and Charging Rules Function) 2036, and the like. The MME2031 is a control node that handles signaling between the UE201 and the EPC203, and provides bearer and connection management. HSS2032 is used to provide some registers to manage functions such as home location register (not shown) and holds some user-specific information about service characteristics, data rates, etc. All user data may be sent through SGW2034, PGW2035 may provide IP address assignment for UE201 and other functions, and PCRF2036 is a policy and charging control policy decision point for traffic data flow and IP bearer resources, which selects and provides available policy and charging control decisions for a policy and charging enforcement function (not shown).

The IP services 204 may include the internet, intranets, IMS (IP Multimedia Subsystem), or other IP services, among others.

Although the LTE system is described as an example, it should be understood by those skilled in the art that the present invention is not limited to the LTE system, but may also be applied to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA, and future new network systems, and the like.

The heat dissipation structure shown in fig. 3 is applied to a mobile terminal. In the present embodiment, the heat dissipation structure is combined as a component of the mobile terminal together with other components to form the mobile terminal. In this embodiment, the heat dissipation structure includes a cover, a case, and an airflow driving device. Wherein, be provided with the through-hole on the lid, the box body with lid interconnect is in order to form the wind channel cavity, the wind channel cavity with the through-hole intercommunication, the outside air of wind channel cavity can enter into to the wind channel cavity through the through-hole, and the internal gas of wind channel wall can also be discharged outside the wind channel cavity through the through-hole moreover. The air flow driving device is arranged in the air duct cavity and is matched with the through hole to discharge hot air in the air duct cavity from the through hole.

In this embodiment, the airflow driving device includes at least one fan, wherein the fan may be a centrifugal fan. In the present embodiment, the size of the fan is 17 × 17mm. In other embodiments, the size of the fan is 15 × 15mm, and may be other sizes, and the specific size may be determined according to specific needs. In the present embodiment, the number of fans is 1. In other embodiments, the number of fans may be 2, 3, or 4, etc., with the specific number being determined according to specific needs. In the present embodiment, the airflow driving device and the cover are detachably assembled together, and the axial direction of the airflow driving device is disposed corresponding to the through hole, for example, the longitudinal axis of the airflow driving device coincides with the longitudinal axis of the through hole, and it should be noted that the longitudinal axis of the airflow driving device may not coincide with the longitudinal axis of the through hole. In other embodiments, the airflow driving device is slidably assembled with the cover, and the airflow driving device is controlled to slide in the cover according to the operation of the user, so as to actively dissipate heat for components with different temperatures, and increase the heat dissipation speed, for example, when the mobile terminal detects an operation instruction of the user, the airflow driving device is controlled to slide in the cover according to the operation instruction; the mobile terminal may also be provided with a mechanical structure, and a user controls the airflow driving device to slide in the cover body by adjusting the mechanical structure. In the present embodiment, the air flow driving device is provided at a distance from the cover, wherein a gap between the air flow driving device and the cover in a thickness direction of the cover is not more than 3mm.

As shown in fig. 4, in the present embodiment, the cover may constitute a rear cover of the mobile terminal. In other embodiments, the cover may be another component of the mobile terminal. In this embodiment, the through holes include at least a first through hole and at least a second through hole, where the first through hole is used as an air inlet hole, and the second through hole is used as an air outlet hole, and it should be noted that the number of the first through holes and the number of the second through holes may be determined according to different requirements. In this embodiment, the cross-sectional shape of the through-hole is rectangular, and in other embodiments, the cross-sectional shape of the through-hole may be circular or other shapes, and is not particularly limited. In this embodiment, the rear cover includes a bottom plate and a side wall connected with the bottom edge and extending in a direction away from the bottom plate, the first through hole penetrates through the bottom plate, and the second through hole penetrates through the side wall.

In this embodiment, the air duct cavity is a cavity defined by the box and a surface of the cover. In this embodiment, the air duct cavity includes a first cavity and a second cavity, where the first cavity is communicated with the second cavity, that is, the first cavity and the second cavity can directly perform airflow circulation. In this embodiment, the internal height of the first cavity is greater than the internal height of the second cavity, and the airflow driving device is accommodated in the first cavity. In other embodiments, the air duct cavity may also include only one cavity, or a plurality of cavities, and it should be noted that the specific structure of the air duct cavity may be determined according to a specific component stacking design inside the mobile terminal, and is not particularly limited. In this embodiment, the first cavity is disposed opposite to the at least one first through hole, and the second cavity is disposed opposite to the at least one second through hole, such that the first cavity is communicated with the at least one first through hole, and the second cavity is communicated with the at least one second through hole.

As shown in fig. 5, in the present embodiment, the box body has a step-shaped outline, and the air duct cavity formed when the box body and one surface of the cover are connected together also has a step-shaped outline. A first distance from the highest point of the first cavity of the air duct cavity to the cover body is larger than a second distance from the highest point of the second cavity of the air duct cavity to the cover body. The box body comprises a top plate and a side wall. The preset position of the top plate is of a bending structure, so that the outline of the box body is in a step shape, the side wall extends from at least one edge of the top plate to the direction far away from the top plate and is connected with one surface of the cover body, and the air channel cavity is defined by the top plate, the side wall and one surface of the cover body together. In this embodiment, the box body and the cover body can slide relatively, for example, the top plate and the side wall can slide relatively to the cover body together, or one of the side walls can slide relatively to the cover body, so as to dynamically adjust the position and the spatial dimension of the air duct cavity, thereby performing a user-defined heat dissipation requirement.

When the box body, the airflow driving device and the cover body are assembled, the box body and the cover body form an air duct cavity, the air duct cavity exchanges air with the outside through a through hole in the cover body, the airflow driving device of the airflow driving device is assembled with the first through hole correspondingly, and the airflow driving device introduces air outside the mobile terminal into the air duct cavity through the first through hole. In other embodiments, a part of the fans in the airflow driving device may also be disposed corresponding to the second through holes, wherein the airflow direction of the fan corresponding to the second through holes is opposite to the airflow direction of the fan corresponding to the first through holes. Through this kind of mode, can accelerate the inside circulation of air speed of wind channel cavity.

Through the heat radiation structure that above-mentioned embodiment provided, utilize air current drive arrangement to drive the air in the wind channel cavity voluntarily, the heat circulation in the acceleration wind channel cavity is in order to reduce the temperature fast.

As shown in fig. 6, the present application further provides a mobile terminal, which includes a display screen, a middle frame, components and the aforementioned heat dissipation structure. The middle frame is used for assembling the display screen and the cover body in the heat dissipation structure, and in the embodiment, the cover body is used as a rear cover of the mobile terminal. The surfaces of the display screen, the middle frame and the rear cover which are connected with the box body are mutually combined to form a containing space for containing various components. Wherein, the air duct cavity that box body and back lid are constituteed leads to and is used for acceping and accept the accommodation space of components and parts isolated each other. The heat of components and parts is transmitted to the box body through a heat conduction mode, and when the air flow driving device located in the air duct cavity works, the air flow driving device can be matched with the through hole to drive the heat of the box body to be discharged from the through hole.

In this embodiment, the component is provided with a receiving position, the position of the receiving position corresponds to the position of the box body, and when the component is assembled on the inner surface of the cover body opposite to the display screen, the box body is at least partially received in the receiving position. In this embodiment, the component includes a circuit board, and the circuit board is provided with a receiving location, for example, the circuit board is L-shaped. In other embodiments, the component includes a battery, and the battery is provided with a receiving position, for example, the battery may be L-shaped. In other embodiments, the receiving position of the component is composed of a circuit board receiving position and a battery receiving position.

In the present embodiment, when the middle frame and the heat dissipation structure are assembled together, the gap between the airflow driving device and the middle frame in the thickness direction of the middle frame is not more than 3mm. In the present embodiment, the heat pipe is provided on the middle frame, wherein the heat pipe is an elongated assembly made of a high thermal conductive material, and the heat pipe is mounted on the surface of the middle frame along the longitudinal direction of the middle frame, and the heat pipe can transfer the heat in the region where the heat of the component on the middle frame is concentrated to other regions of the middle frame, so as to reduce the occurrence of the excessive temperature of the regions. In order to further improve the heat transfer from the heat pipe of the intermediate frame to another region, in the present embodiment, a partial region of the heat pipe corresponds to a housing position of the component, that is, corresponds to the airflow driving device. By the embodiment, the low-temperature air introduced from the airflow driving device can be guided to the heat pipe, so that the temperature of the heat pipe is reduced, and the heat conduction capacity of the heat pipe can be improved. In other embodiments, the surface of the middle frame may also be provided with a temperature equalization plate, and other periods of high-power heat dissipation may also be provided, which is not limited specifically.

In this embodiment, the fan included in the airflow driving device is mounted on the cover body correspondingly according to the airflow direction designed as required, and corresponds to the first through hole and/or the second through hole on the cover body. In other embodiments, the airflow driving device is assembled in the box body, the box body covers the surface of the rear cover, on which the through holes are arranged, so as to form the air duct cavity, and the airflow driving device corresponds to the first through hole and/or the second through hole. And installing a circuit board on the inner surface of the cover body close to the upper end, wherein a CPU is installed on the circuit board and is used for controlling the mobile terminal to work. The battery is arranged on the inner surface of the cover body and is close to the lower end, wherein one side edge of the battery is opposite to one side edge of the circuit board, a notch is arranged on the edge of the battery adjacent to the circuit board, and the notch and the side edge of the circuit board adjacent to the notch form a city-enclosing containing position, so that the fan can be contained in the containing position. Meanwhile, the middle frame with the heat pipe and the rear cover are assembled together.

Through the above embodiment, utilize the heat that the box body absorption components and parts during operation produced of heat-conducting mode, and then through the circulation with higher speed in the air duct cavity of air current drive arrangement drive, in order to discharge the heat of box body from the through-hole through the air current, through this kind of mode, not only can realize the effect of initiative cooling, and because the air duct cavity is kept apart with the inside accommodating space who is used for accommodating components and parts of mobile terminal, reduce the contact of dust and steam and the inside components and parts of mobile terminal effectively, in order to improve the radiating effect and the life of being suitable for of mobile terminal components and parts

As shown in fig. 7, the present application further provides a heat dissipation method, which is applied to the foregoing mobile terminal, and once the method of this embodiment is triggered by a user, a flow in this embodiment automatically runs through the terminal, where each step may be performed sequentially according to a sequence in the flowchart, or multiple steps may be performed simultaneously according to an actual situation, which is not limited herein. The heat dissipation method comprises the following steps:

step S710, acquiring a state parameter of the mobile terminal.

And S720, controlling the airflow driving device, the box body and the through hole to be matched according to the state parameters so as to discharge hot air in the mobile terminal from the through hole.

Through the embodiment, the air flow driving device is adaptively controlled to work by detecting the state parameters of the mobile terminal, so that the power consumption can be saved and the effect of effective cooling can be achieved.

Specifically, in this embodiment, the status parameter is information of an application currently running in the foreground of the mobile terminal. The application information may be a category of the application and/or a name of the application. In other embodiments, the state parameter is temperature information of the mobile terminal at a preset position. In step S710, information of the application currently running in the foreground of the mobile terminal may be acquired through a call function of the system. In other embodiments, a sensor is provided in the mobile terminal, and the CPU determines the temperature information of the mobile terminal at the preset position by receiving a temperature detection value transmitted by the sensor.

In step S720, a corresponding relationship between a working parameter of the airflow driving device and a size of the air duct cavity and the status parameter is predetermined, and the step of controlling the airflow driving device to cooperate with the through hole according to the status parameter to discharge the hot air in the mobile terminal from the through hole may include the following steps:

determining the working parameters of the airflow driving device corresponding to the application program information;

and controlling the box body to slide according to the working parameters of the airflow driving device so as to change the size of the air duct cavity, and controlling the airflow driving device of the airflow driving device to be matched with the through hole according to the working parameters so as to discharge hot air in the mobile terminal from the through hole.

Through the heat radiation structure, mobile terminal and heat radiation method, set up airflow drive arrangement in mobile terminal, mobile terminal's back lid sets up the through-hole, airflow drive arrangement sets up with the through-hole relatively, at the during operation, the heat of mobile terminal's components and parts passes through heat-conduction transfer and gives display screen and back lid, display screen and back lid carry out heat exchange through radiation and natural convection and environment, mobile terminal outside air enters into mobile terminal's inner chamber through the through-hole of back lid, carry out heat exchange inside mobile terminal, through CPU drive through the work of airflow drive arrangement with the circulation of the hot-air of initiative promotion inner chamber and discharge in the through-hole, in order to realize the effect of initiative cooling. And the contact area of the air flow in the air duct cavity and the box body can be controlled by adjusting the size of the air duct cavity, so that the heat dissipation work can be completed by matching different sizes of the air duct cavity and the air flow driving device working with working parameters under different state parameters of the mobile terminal.

The corresponding technical features in the above embodiments may be used with each other without causing contradiction in the schemes or without being implementable.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a component of' 8230; \8230;" does not exclude the presence of another like element in a process, method, article, or apparatus that comprises the element.

The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present application.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a heat radiation structure, is applied to mobile terminal, its characterized in that, heat radiation structure includes lid, box body and air current drive arrangement, the lid is provided with the through-hole, the box body with the lid is connected and is formed the wind channel cavity, the wind channel cavity with the through-hole intercommunication, air current drive arrangement accept in the wind channel cavity, air current drive arrangement with the through-hole cooperatees will the hot-air follow of wind channel cavity discharges in the through-hole, the profile of box body is the echelonment, the box body with the lid is connected and is formed inside be the echelonment the wind channel cavity, the box body with the connected mode of lid is sliding connection, the box body can with the lid relative slip, air current drive arrangement accept in the wind channel cavity and can with the lid relative slip.

2. The heat dissipating structure of claim 1, wherein the through holes comprise at least a first through hole and at least a second through hole, the airflow driving device is disposed opposite to the at least a first through hole, and the airflow driving device cooperates with the at least a first through hole to introduce air into the air channel cavity and drive the air in the air channel cavity to flow out of the at least a second through hole.

3. The heat dissipation structure of claim 2, wherein the air duct cavity comprises a first cavity and a second cavity, the first cavity is communicated with the second cavity, the first cavity is disposed opposite to the at least one first through hole, and the second cavity is disposed opposite to the at least one second through hole.

4. The heat dissipation structure of claim 3, wherein a first distance from a highest point of the first cavity of the air duct cavity to the cover is greater than a second distance from a highest point of the second cavity of the air duct cavity to the cover.

5. The heat dissipating structure of claim 1, wherein said airflow driving device comprises at least one fan.

6. The heat dissipating structure of claim 5, wherein the fan has a size of 17 x 17mm or 15 x 15mm.

7. A mobile terminal is characterized by comprising a display screen, a middle frame, components and any heat dissipation structure according to claims 1 to 6, wherein the surfaces of the display screen, the middle frame and the cover body, which are connected with a box body, are mutually combined to form an accommodating space, the accommodating space is used for accommodating the components, the air duct cavity and the accommodating space are mutually isolated through the box body, the heat of the components and the box body are conducted with heat conduction, and the airflow driving device is matched with the through hole to drive the heat of the box body to be discharged from the through hole.

8. The mobile terminal of claim 7, wherein the component comprises a receiving location, the cartridge being at least partially contained in the receiving location when the component and the heat-dissipating structure are combined.

9. A heat dissipation method applied to the mobile terminal according to claim 1, the method comprising:

acquiring state parameters of the mobile terminal, wherein the state parameters comprise at least one of the following parameters: foreground running application information and temperature information;

controlling the airflow driving device, the box body and the through hole to be matched with each other according to the state parameters to discharge hot air in the mobile terminal from the through hole, and the method comprises the following steps:

determining working parameters of the airflow driving device corresponding to the state parameters;

and controlling the box body to slide according to the state parameters so as to change the size of the air duct cavity, and controlling the airflow driving device of the airflow driving device to be matched with the through hole according to the working parameters so as to discharge hot air in the mobile terminal from the through hole.