Electronic equipment

Abstract

The invention discloses an electronic device which comprises a shell, a target heating component, a first heat conduction piece, a first fan and a second fan, the shell comprises a heat dissipation opening, the first fan can generate first blowing air blowing to the heat dissipation opening and second blowing air blowing to the target heating component in a working state, the first heat conduction piece is connected with the target heating component, and the second heat conduction piece is connected with the target heating component. The first heat conduction piece can conduct heat of the target heating component to one or more target positions, the at least one target position is located in the blowing path of the first blowing, the second fan can generate target blowing in the target direction in the working state, and the target direction comprises the direction facing the target heating component. The blowing path of the target blowing does not include any target position, or along the blowing path of the target blowing, the time from the target blowing to the target heating component is the first time, the time from the target blowing to the target position is the second time, and the second time is later than the first time.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to an electronic equipment. Background Art

[0002] For electronic devices with high power consumption inside electronic devices, such as central processing units, graphics processing units, etc., air-cooled heat pipe radiators are usually used for heat dissipation. Air-cooled heat pipe radiators include heat pipes and fans. The heat pipes transfer heat from the heat source to the heat sink located at the heat dissipation port of the electronic device, and the fan blows air to the heat sink to bring the heat out of the heat dissipation port.

[0003] In order to improve the heat dissipation efficiency, some electronic devices add a fan outlet on the basis of the traditional air-cooled heat pipe radiator, so that the fan also blows air to the heat source, that is, the fan has both the first blowing to the heat sink and the second blowing to the heat source. Although this heat dissipation architecture improves the heat dissipation efficiency, it has the problem of poor comprehensive benefits of heat dissipation efficiency and fan energy consumption. Summary of the invention

[0004] This application provides the following technical solutions:

[0005] An electronic device, comprising:

[0006] A housing, the housing comprising a heat dissipation port;

[0007] Target heat generating components;

[0008] a first fan, which, in a working state, can generate a first air flow toward the heat dissipation port and a second air flow toward the target heat-generating component;

[0009] a first heat-conducting member, the first heat-conducting member being connected to the target heat-generating component, and the first heat-conducting member being capable of conducting heat of the target heat-generating component to one or more target positions, at least one of the target positions being in a blowing path of the first blowing;

[0010] a second fan, wherein the second fan can generate targeted blowing in a target direction when in operation, wherein the target direction includes a direction toward the target heat-generating component;

[0011] The blowing path of the target blowing does not include any of the target positions, or, along the blowing path of the target blowing, the time from the target blowing to the target heating component is a first time, and the time from the target blowing to the target position is a second time, and the second time is later than the first time.

[0012] Optionally, the electronic device comprises a plurality of heat-generating components, the plurality of heat-generating components comprising a heat-generating component in a first part and a heat-generating component in a second part, the heat-generating component in the first part is the target heat-generating component, and the target direction comprises a direction toward at least one heat-generating component in the second part.

[0013] Optionally, the electronic device includes:

[0014] A heat conducting plate, the heat conducting plate being provided with a supporting portion for connecting to a carrier carrying the plurality of heat generating components, the heat conducting plate having a first plate surface facing the carrier;

[0015] The fan housing of the second fan is installed in the first area of ​​the first board surface and is heat-transfer connected to the heat-conducting plate. The second area of ​​the first board surface is heat-transfer connected to the heat-generating component of the second part. The second area is different from the first area.

[0016] Optionally, the electronic device includes at least one of the following items:

[0017] The electronic device comprises a flow guide disposed on the first plate surface of the heat conducting plate, the flow guide being used to form an air flow channel on the first plate surface leading to the heat generating components of the second part;

[0018] The electronic device comprises a windshield strip disposed on a second board surface of the heat conducting plate opposite to the first board surface, the windshield strip extending along a first edge of the second board surface, the first edge being an edge of the second board surface close to the heat generating component of the first portion;

[0019] The second region is provided with a convex shell protruding toward the heat-generating component of the second portion, and the outer surface of the convex shell is used for heat-transfer connection with the heat-generating component of the second portion.

[0020] Optionally, in the above electronic device, there are multiple target heat generating components, which are arranged at least at a first position and a second position, and the first position and the second position are different;

[0021] The working state of the second fan includes a first working state and a second working state. In the first working state, the blowing path of the target air blowing includes the first position and does not include the second position; in the second working state, the blowing path of the target air blowing includes the second position and does not include the first position.

[0022] Optionally, in the above electronic device, when the temperature difference between the first position and the second position meets a first preset condition, the working state of the second fan is adjusted to the first working state;

[0023] When the temperature difference between the first position and the second position meets a second preset condition, the working state of the second fan is adjusted to the second working state.

[0024] Optionally, in the above electronic device, the fan housing of the second fan has a first air outlet for conveying blown air, the second fan includes a first wind shield slidably arranged on the first air outlet, the first air outlet has a first air outlet area facing the first position and a second air outlet area facing the second position, and the first wind shield changes the flow areas of the first air outlet area and the second air outlet area simultaneously by sliding relative to the fan housing of the second fan; or,

[0025] The fan housing of the second fan has a second air outlet facing the first position and a third air outlet facing the second position, and the second fan includes a second wind shield plate movably disposed at the second air outlet and a third wind shield plate movably disposed at the third air outlet, and the second wind shield plate and the third wind shield plate are used to adjust the flow areas of the second air outlet and the third air outlet, respectively.

[0026] Optionally, in the above-mentioned electronic device, the electronic device has at least a first operating condition and a second operating condition, the workload of the second operating condition is greater than the workload of the first operating condition, and when the electronic device is in the first operating condition, the second fan blows air and the first fan does not blow air; when the electronic device is in the second operating condition, the first fan blows air.

[0027] Optionally, in the above electronic device, when the electronic device is in the second working condition, both the first fan and the second fan blow air; or,

[0028] The electronic device has a third working condition, the workload of the third working condition is greater than the workload of the second working condition, when the electronic device is in the second working condition, the first fan blows air and the second fan does not blow air; when the electronic device is in the third working condition, both the first fan and the second fan blow air.

[0029] Optionally, in the above electronic device, the electronic device is configured as follows: the heat generated by the workload in the first working condition is not greater than the heat delivered by the second fan, and the heat generated by the workload in the second working condition is greater than the heat delivered by the second fan.

[0030] Optionally, in the above electronic device, when the electronic device is in the first working condition, the electronic device runs a system program but does not run an application program, and when the electronic device is in the second working condition, the electronic device runs at least one application program; and / or,

[0031] The circuit board where the target heat-generating component is located is provided with a board-end temperature sensor. When the electronic device is in the first operating condition, the measured value of the board-end temperature sensor is not greater than a preset temperature. When the electronic device is in the second operating condition, the measured value of the board-end temperature sensor is greater than the preset temperature.

[0032] Optionally, the electronic device includes:

[0033] a third fan, wherein the third fan can generate a third airflow toward the heat dissipation port when in operation, or the third fan can generate a third airflow toward the heat dissipation port and a fourth airflow toward the target heat-generating component when in operation;

[0034] At least one of the target positions is in the blowing path of the third blowing, the target position in the blowing path of the third blowing is different from the target position in the blowing path of the first blowing, and the heat dissipation port to which the third blowing is blown is different from the heat dissipation port to which the first blowing is blown.

[0035] Optionally, in the above electronic device, the electronic device has at least a fourth working condition, a fifth working condition and a sixth working condition, the workload of the fifth working condition is greater than the workload of the fourth working condition, and the workload of the sixth working condition is greater than the workload of the fifth working condition;

[0036] When the electronic device is in the fourth working condition, the second fan blows out air, and the first fan and the third fan do not blow out air; when the electronic device is in the fifth working condition, the first fan and the third fan, whichever has a smaller distance from the target position along the first heat conducting member to the target heat-generating component, does not blow out air, and the other does not blow out air; when the electronic device is in the sixth working condition, the first fan, the second fan and the third fan all blow out air;

[0037] Optionally, in the above-mentioned electronic device, the distance from the third fan to the target heat-generating component along the blowing path of the fourth blowing is different from the distance from the first fan to the target heat-generating component along the blowing path of the second blowing, and when the target heat-generating component operates at a first load, the first fan or the third fan having a smaller distance to the target heat-generating component blows out air at a first speed, and the other fan does not blow air or blows out air at a second speed that is lower than the first speed; when the target heat-generating component operates at a second load greater than the first load, the first fan or the third fan having a smaller distance to the target heat-generating component blows out air at a third speed that is higher than the first speed, and the other fan blows out air at a fourth speed that is higher than the second speed but lower than the third speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0039] Figure 1 is a schematic diagram of an electronic device according to an embodiment of the present application;

[0040] Figure 2 is a schematic diagram of an electronic device according to another embodiment of the present application;

[0041] Figure 3 is a schematic diagram of an electronic device according to another embodiment of the present application;

[0042] Figure 4 is a schematic diagram of an electronic device according to another embodiment of the present application;

[0043] Figure 5 is a schematic diagram of an electronic device according to another embodiment of the present application;

[0044] Figure 6 Yes Figure 5 Schematic diagram of the heat dissipation module;

[0045] Figure 7 yes Figure 6 An exploded schematic diagram of the structure shown;

[0046] Figure 8 yes Figure 6 a top view of the structure shown;

[0047] Fig. 9 Yes Figure 6 a bottom view of the structure shown;

[0048] Fig.10 It is a three-dimensional schematic diagram of the heat conducting plate;

[0049] Fig.11 is a schematic diagram of a working state of a second fan according to an embodiment of the present application;

[0050] Fig.12 is a schematic diagram of another working state of the second fan according to an embodiment of the present application;

[0051] Fig.13 It is a schematic diagram of another working state of the second fan according to an embodiment of the present application.

[0052] The markings in the figure are:

[0053] 100, housing; 110, heat dissipation port;

[0054] 210, first fan; 220, second fan; 221, first air outlet area; 222, second air outlet area; 223, first wind shield; 224, driving device; 230, third fan;

[0055] 300, target heat generating component; 400, first heat conducting member; 410, target position;

[0056] 500, heat conducting plate; 510, supporting portion; 520, second plate surface; 530, air inlet; 540, convex shell; 550, first plate surface; 560, flow guide;

[0057] 600, windshield strip; 700, heat dissipation module; 800, fastener; 900, heat conduction layer;

[0058] A, first blow; B, second blow; C, target blow; D, third blow; E, fourth blow; F1, first position; F2, second position. DETAILED DESCRIPTION

[0059] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0060] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0061] In the description of this specification, relational terms such as first and second, etc. are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0062] The inventors of the present application have discovered that the combined benefits of heat dissipation efficiency and fan energy consumption of conventional heat dissipation architectures are relatively poor, partly because the ratio of the required air volume at the heat source to the required air volume at the heat sink varies with the load. Under certain operating conditions of electronic equipment, when the fan meets the air volume demand at one location, it inevitably provides excess air volume to another location that far exceeds the air volume demand at that location.

[0063] Based on the technical issues of this application, see Figure 1 to Figure 13The embodiment of the present application provides an electronic device, including a housing 100, a target heating component 300, a first heat conducting member 400, a first fan 210, and a second fan 220, wherein the housing 100 includes a heat dissipation port 110, and the first fan 210 can generate a first blowing air A blowing toward the heat dissipation port 110 and a second blowing air B blowing toward the target heating component 300 in a working state, the first heat conducting member 400 is connected to the target heating component 300, and the first heat conducting member 400 can conduct the heat of the target heating component 300 to one or more target positions 410, and at least one target position 410 is in the blowing path of the first blowing air A, and the second fan 220 can generate a target blowing air C in a target direction in a working state, and the target direction includes a direction toward the target heating component 300. The blowing path of the target blowing air C does not include any target position 410, or, along the blowing path of the target blowing air C, the time from the target blowing air C to the target heating component 300 is a first time, and the time from the target blowing air C to the target position 410 is a second time, and the second time is later than the first time.

[0064] The electronic device may be of various types, such as a laptop computer, a tablet computer, a mobile phone, a handheld game console, etc. The housing 100 is a component of the outer shell of the electronic device, and provides a storage space for arranging functional components (such as a motherboard, a hard disk, etc.) of the electronic device. The heat dissipation port 110 is an opening on the housing 100 that connects the storage space of the housing 100 and the external space of the housing 100 for heat dissipation. The heat generating component is a component that generates heat when working, such as a central processing unit, a graphics processing unit, a memory, a solid state hard disk, a wireless module, etc. The target heat generating component 300 is a component of the heat generating component that is at least cooled by the first fan 210 and the first heat conducting member 400. At least a portion of the first heat conducting member 400 may be connected to the target heat generating component 300 in a heat transfer manner, and heat may be conducted from the target heat generating component 300 along the first heat conducting member 400. The target position 410 may be a position with heat dissipation conditions in the storage space of the housing 100, and at least a portion of the first heat conducting member 400 may be arranged at the target position 410, so that the heat of the target heat generating component 300 may be conducted to the target position 410. The first heat conductor 400 can be set as, for example, a heat pipe, a metal plate, etc., and the target position 410 can be one or more, and a plurality means greater than one. In the blowing path of the first blowing air A of the first fan 210, there is at least one target position 410, that is, the first blowing air A passes through at least one target position 410. It should be noted that the blowing path of a certain fan refers to the distance that the wind blown by the fan passes before encountering the heat dissipation port 110 or another fan during the flow in the accommodating space of the housing 100.

[0065] The second fan 220 can generate target blowing C toward a target direction when in working state. The target direction may be a blowing direction of the second fan 220 set as needed. The target direction may be one or more. Among the one or more target directions, the direction toward the target heating component 300 is included. That is, at least one blowing path of the second fan 220 includes the target heating component 300. In other words, at least one target blowing C of the second fan 220 blows toward the target heating component 300, which can dissipate heat for the target heating component 300.

[0066] In some embodiments, the blowing path of the target blowing C of the second fan 220 does not include any target position 410, that is, no target position 410 is located in the blowing path of any target blowing C of the second fan 220.

[0067] In other embodiments, in the blowing path of the target air blowing C of the second fan 220 , the blowing path of the target air blowing C may include a target position 410 , and in the blowing path including the target position 410 , the target air blowing C first flows through the target heating component 300 and then flows through the target position 410 .

[0068] After the first fan 210 is started, the second air B of the first fan 210 blows toward the target heat-generating component 300. At the same time, the first air A of the first fan 210 flows through the target position 410 and blows toward the heat dissipation port 110. Under the condition that the load of the electronic device is relatively small, the heat at the target heat-generating component 300 may be much higher than the heat conducted to the target position 410 by the first heat conductor 400. Therefore, the first air A of the first fan 210 working under this condition cannot be effectively utilized. In other words, this part of the air volume of the first fan 210 is actually wasted. The electronic device of the present application is provided with a second fan 220, and at least one target blowing air C of the second fan 220 blows toward the target heating component 300, so under the above working conditions, the second fan 220 can be operated, and the first fan 210 can not be operated, so that while meeting the heat dissipation demand at the target heating component 300, it is avoided that the first fan 210 generates unnecessary first blowing air A, and because there is a target position 410 in the blowing path of the target blowing air C of the second fan 220, the target blowing air C first flows through the target heating component 300, and then flows through the target position 410, so the air outlet of the second fan 220 relatively more heats the target heating component 300, so that the air volume can be efficiently utilized, and it can be seen that the electronic device of the present application can reduce the waste of fan air volume, and make the air volume provided by the fan be more optimally utilized. The optimized utilization of air volume is conducive to reducing the energy consumption of the fan while meeting the heat dissipation demand, so that the comprehensive benefits of heat dissipation efficiency and fan energy consumption are improved.

[0069] See also Figure 1and Figure 2 , Figure 1 An embodiment in which the heat dissipation port 110 and the target position 410 are one is exemplarily shown. Figure 2 The embodiment in which the heat dissipation outlet 110 and the target position 410 are two is exemplarily shown. Figure 2 In the embodiment shown, the target position 410 on the left side and / or the target position 410 on the right side in the figure can be set in the blowing path of the target blowing air C of the second fan 220. For example, the blowing path of the target blowing air C can be configured as follows: the target blowing air C flows through the target heating component 300 and then turns to Figure 2 The target air flow C flows to the left side of the housing 100, and then passes through the target position 410 and the heat dissipation port 110 on the left side in sequence, and then flows out of the housing 100; for another example, the air blowing path of the target air blowing C can be configured as follows: the target air blowing C flows through the target heat-generating component 300 and then turns to Figure 2 The target air flow C flows to the right side of the housing 100, and then flows through the target position 410 and the heat dissipation port 110 on the right side in sequence, and then flows out of the housing 100; for another example, the blowing path of the target air flow C can be configured as follows: the target air flow C flows through the target heat-generating component 300, and then a portion of the target air flow C turns to Figure 2 The other part turns to the left Figure 2 to the right, where Figure 2 The wind on the left side passes through the target position 410 and the heat dissipation port 110 on the left side, flows out of the housing 100, and turns to Figure 2 The wind on the right side passes through the right target position 410 and the heat dissipation port 110 in sequence and then flows out of the housing 100. It should be noted that the present application does not specifically limit the application scenario of the second fan 220, that is, those skilled in the art can adjust its type according to actual conditions. The above situation is only an exemplary description of the application scenarios of the second fan 220 in the present application, but is not limited to the situations described in the above embodiments.

[0070] See also Figure 3 In some embodiments, the blowing path of the target blowing C may not include any target position 410. For example, the housing 100 may be provided with a heat dissipation port 110 at a position not corresponding to the target position 410. Figure 3 In the exemplary embodiment, the heat dissipation port 110 may be set to be multiple, wherein at least one of the multiple heat dissipation ports 110 may correspond to neither the left target position 410 nor the right target position 410, and the blowing path of the target blowing air C may be configured as follows: after the target blowing air C flows through the target heating component 300, it directly flows out of the housing 100 from the heat dissipation port 110 at the middle position without passing through any target position 410. The position of the second fan 220 in the housing 100 can be flexibly set as needed, and this application does not limit this, see Figure 3 and Figure 4The second fan 220 can be disposed on a side of the target heating component 300 adjacent to the side where the first fan 210 is located, or on a side of the target heating component 300 opposite to the side where the first fan 210 is located. In addition, in an embodiment in which a plurality of heat dissipation ports 110 are provided, the heat dissipation ports 110 can be arranged on different surfaces of the housing 100, for example, Figure 4 On the basis of the embodiment shown, the heat dissipation port 110 on the left side is changed from the upper side of the housing 100 in the figure to the left side of the housing 100, so that the heat dissipation port 110 is provided on different sides of the housing 100. It should be noted that the configuration of the blowing path can be achieved by conventional methods such as providing an air guide in the accommodation space of the housing 100, as long as the wind can flow along the designed blowing path.

[0071] In some embodiments, the electronic device may include a plurality of heat-generating components, the plurality of heat-generating components including heat-generating components of a first part and heat-generating components of a second part, the heat-generating components of the first part may be a target heat-generating component 300, and the target direction may include a direction toward at least one heat-generating component of the second part. The first part and the second part are divisions of the plurality of heat-generating components, that is, the plurality of heat-generating components as a whole may at least be divided into a first part including a plurality of heat-generating components and a second part including a plurality of heat-generating components, wherein the heat-generating components of the first part may be a target heat-generating component 300, the target direction may include a direction toward the heat-generating components of the first part, and at the same time, the target direction may also include a direction toward at least one heat-generating component of the second part, that is, the second fan 220 can generate a target blowing C for cooling the heat-generating components of the first part and a target blowing C for cooling the heat-generating components of the second part in the working state. In this way, by setting the target directions to be multiple, the air outlet range of the second fan 220 can be expanded, thereby cooling more heat-generating components.

[0072] See also Figure 5 In some embodiments, the second fan 220 can generate three target blowings in different target directions when in operation, which can be target blowing C1, target blowing C2 and target blowing C3, that is, the target blowing C1, target blowing C2 and target blowing C3 blow in different directions, and the different directions refer to the directions blown out from different positions of the fan housing of the second fan 220. For example, the target blowing C1 can be from Figure 5 The target air flow C2 may be blown from the upper side of the second fan 220. Figure 5 The target air flow C3 may be blown from the left side of the second fan 220. Figure 5The target air C1 can be blown toward the heat generating components of the first part, that is, toward the target heat generating components 300, and the target air C2 and the target air C3 can be blown toward the heat generating components of the second part. It should be noted that, for simplicity, Figure 5 The target heat generating component 300 and the first heat conducting member 400 are omitted and are not shown. Figure 5 The first fan 210 and the first blowing air A and the second blowing air B are shown, and refer to Figure 3 right Figure 5 It can be understood by referring to the embodiments shown. It is easy to understand that when the first fan 210 and the second fan 220 are both working, the second air blow B of the first fan 210 and the target air blow C1 of the second fan 220 are both blown toward the heat-generating components of the first part, so that the heat-generating components of the first part can obtain a larger air volume. In some embodiments, the heat-generating components of the first part can be set to heat-generating components with relatively large power consumption, such as a central processing unit, a graphics processing unit, etc. In order to make reasonable use of the fan of the second fan 220, the heat-generating components of the second part can be set to heat-generating components with relatively small power consumption, such as a memory, a solid-state hard disk, etc. Figure 5 In the exemplary embodiment, the heat generating components of the second part may include a WIFI module, an SSD (solid state drive) and a DDR (double data rate synchronous dynamic random access memory) and the like.

[0073] See also Figure 5 The first fan 210 and the second fan 220 can be configured as centrifugal fans, which have a relatively small size in the fan axial direction, and are convenient for being arranged in a housing 100 with limited thickness, such as the housing 100 of a tablet computer. Of course, in other embodiments, the first fan 210 and the second fan 220 can be configured as other types. For example, if the accommodation space of the housing 100 allows, one or more axial flow fans can be arranged in the fan housing, thereby forming the first fan 210 or the second fan 220 having the fan housing.

[0074] See also Figure 5~Figure 10 In some embodiments, the electronic device may include a heat conducting plate 500, the heat conducting plate 500 may be provided with a support portion 510 for connecting to a carrier carrying a plurality of heat generating components, and the heat conducting plate 500 may have a first plate surface 550 facing the carrier. The fan housing of the second fan 220 may be mounted on a first area of ​​the first plate surface 550 and may be heat-transferably connected to the heat conducting plate 500, and a second area of ​​the first plate surface 550 may be heat-transferably connected to a second portion of the heat generating components, and the second area is different from the first area.

[0075] It is understandable that the heat conducting plate 500 is a component capable of conducting heat, and the present application does not limit the material of the heat conducting plate 500. For example, the heat conducting plate 500 can be set as a metal part, a ceramic part, etc. The carrier is a component that carries multiple heat-generating components, and can be set as a PCB board, for example. The support portion 510 is a part of the heat conducting plate 500 used to connect with the carrier. After the connection, the support portion 510 supports the heat conducting plate 500 and forms a certain distance between the first board surface 550 of the heat conducting plate 500 and the carrier. In the case where the heat conducting plate 500 is set as a metal part, the support portion 510 can be formed by a local folding edge of the heat conducting plate 500. The second area of ​​the first board surface 550 is connected to the heat-generating component of the second part on the carrier through heat transfer, so that the heat of the heat-generating component of the second part can be diffused to a larger area by using the heat conducting plate 500 to achieve a uniform temperature effect. The fan housing of the second fan 220 is heat-conductingly connected to the heat conducting plate 500, so that the heat conducting plate 500 can conduct the heat of the heat-generating components to the fan housing of the second fan 220. On the one hand, the fan housing of the second fan 220 is utilized to increase the heat diffusion area. On the other hand, when the second fan 220 is working, the generated air can be utilized to take away the heat, thereby improving the heat dissipation efficiency of the heat-generating components in the second part.

[0076] In some embodiments, the electronic device may include a second heat conducting member connecting the heat conducting plate 500 and the fan housing of the first fan 210, and the second heat conducting member is used to transfer heat from the heat conducting plate 500 to the fan housing of the first fan 210, thereby further increasing the heat diffusion area, and when the first fan 210 is working, the heat can be taken away by the generated blowing air, thereby improving the heat dissipation efficiency of the heat generating components of the second part. The second heat conducting member can be set as, for example, a heat pipe, a metal plate, etc., as long as it can transfer heat from the heat conducting plate 500 to the fan housing of the first fan 210.

[0077] The second fan 220 can be mounted on the heat conducting plate 500 by means of fasteners 800 such as screws. The fasteners 800 can be clamping components, bolt components, adhesive components, etc. The heat conducting plate 500 and the second fan 220 are connected by the fasteners 800 to form a heat dissipation module 700, which is convenient for the whole to be removed from the carrier. Figure 7 In order to minimize the overall volume of the heat dissipation module 700, a portion of the heat conducting plate 500 can be used to form a part of the fan housing of the second fan 220. An air inlet 530 can be opened in this portion of the heat conducting plate 500. When the second fan 220 is working, the gas enters the fan housing of the second fan 220 from the air inlet 530.

[0078] See also Figure 5 and Fig.10In some embodiments, the electronic device may include a guide 560 disposed on the first plate surface 550 of the heat conducting plate 500, and the guide 560 is used to form an air flow channel leading to the heat generating components of the second part on the first plate surface 550. By providing the guide 560, the target air C flowing along the heat conducting plate 500 can be made to flow to the heat generating components at different positions more evenly, thereby improving the overall heat dissipation effect.

[0079] See also Figure 5 and Figure 6 In some embodiments, the electronic device may include a windshield strip 600 disposed on the second board surface 520 of the heat conducting plate 500 opposite to the first board surface 550, and the windshield strip 600 extends along a first edge of the second board surface 520, and the first edge is an edge of the second board surface 520 close to the heat generating component of the first portion. The windshield strip 600 on the heat conducting plate 500 can prevent the target air C1 blown toward the target heat generating component 300 by the second fan 220 from flowing back toward the air inlet 530 of the second fan 220 through the second board surface 520, so that the second fan 220 can better dissipate heat for the target heat generating component 300. The windshield strip 600 can be set to a material such as foam, plastic, etc., such as Figure 5 As shown, in some embodiments, wind shields 600 may be provided at other positions in the shell 100 as needed to prevent air leakage or backflow. For example, when a wind shield 600 is provided on the first side of the second plate surface 520 of the heat conducting plate 500, a wind shield 600 from the heat conducting plate 500 to the side of the shell 100 may also be provided in the shell 100. The wind shield 600 between the side of the shell 100 and the heat conducting plate 500 and the wind shield 600 located on the second plate surface 520 of the heat conducting plate 500 form a U-shaped retaining wall. The airflow blown by the fan into the area enclosed by the retaining wall and the side of the shell 100 will not leak to other positions inside the shell 100, thereby better bringing the heat from the heat dissipation port on the side of the shell 100 to the outside of the shell 100.

[0080] See also Fig.10 In some embodiments, the second area of ​​the first plate surface 550 may be provided with a convex shell 540 protruding toward the heat-generating component of the second part, and the outer surface of the convex shell 540 is used for heat transfer connection with the heat-generating component of the second part. The support portion 510 of the heat-conducting plate 500 forms a certain distance between the carrier and the first plate surface 550. In order to adapt to the size of the second fan 220, this distance may be greater than the height of the heat-generating component relative to the carrier. Therefore, in order to facilitate the heat transfer connection between the first plate surface 550 of the heat-conducting plate 500 and the heat-generating component, a convex shell 540 protruding toward the heat-generating component is provided on the heat-conducting plate 500. It is easy to understand that the concave side of the convex shell 540 is the second plate surface 520 of the heat-conducting plate 500 (see Figure 6 and Figure 7), and the convex side of the convex shell 540 is a convex structure of the first plate surface 550 of the heat conducting plate 500. In the case where the heat conducting plate 500 is a metal part, the convex shell 540 can be made by a stamping process. In the embodiment where the second fan 220 is set as a centrifugal fan, the axis of the second fan 220 can be set to meet the perpendicular condition with the plate surface of the first area, so that the overall thickness of the heat dissipation module 700 is small.

[0081] See also Figure 7 and Fig. 9 In some embodiments, a heat-conducting layer 900 may be provided between the convex shell 540 and the corresponding heat-generating component. The heat-conducting layer 900 may be provided as, for example, a heat-conducting pad, a heat-conducting paste, or a heat-conducting gel. There may be tiny pits on the surface of the heat-generating component. By providing the heat-conducting layer 900, these pits may be filled, so that a good heat transfer connection is provided between the convex shell 540 and the heat-generating component.

[0082] See also Figure 11~Figure 13 In some embodiments, there may be multiple target heating components 300, and these target heating components 300 may be arranged at least at a first position F1 and a second position F2, and the first position F1 and the second position F2 are different, that is, the first position F1 and the second position F2 may both be arranged with target heating components 300. The working state of the second fan 220 may include a first working state and a second working state. In the first working state, the blowing path of the target blowing C includes the first position F1 and does not include the second position F2; in the second working state, the blowing path of the target blowing C includes the second position F2 and does not include the first position F1.

[0083] In some embodiments, when the electronic device is working, the target heat-generating component 300 at the first position F1 and the second position F2 may have different requirements for the heat dissipation air volume. By setting the second fan 220 with the first working state and the second working state, the same second fan 220 can be used to selectively blow air to the first position F1 and / or the second position F2, so as to better match the requirements of the target heat-generating component 300 for the air volume, thereby optimizing the use of the air volume of the second fan 220. In the first working state, since the blowing path of the target blowing C includes the first position F1 but does not include the second position F2, the second fan 220 blows air to the target heat-generating component 300 at the first position F1, but does not blow air to the target heat-generating component 300 at the second position F2; in the second working state, since the blowing path of the target blowing C includes the second position F2 but does not include the first position F1, the second fan 220 blows air to the target heat-generating component 300 at the second position F2, but does not blow air to the target heat-generating component 300 at the first position F1. It should be noted that the target heating components 300 at different positions may be the same or different. For example, the target heating component 300 at the first position F1 may be set as a central processing unit, and the target heating component 300 at the second position F2 may be set as a graphics processor. For another example, the target heating components 300 at the first position F1 and the second position F2 may both be set as central processing units.

[0084] In some embodiments, the electronic device may be configured as follows: when the temperature difference between the first position F1 and the second position F2 meets the first preset condition, the working state of the second fan 220 is adjusted to the first working state; when the temperature difference between the first position F1 and the second position F2 meets the second preset condition, the working state of the second fan 220 is adjusted to the second working state. As mentioned above, the second fan 220 having the first working state and the second working state can better match the air volume demand of the target heating component 300 by adjusting the working state. The electronic device can adjust the working state of the second fan 220 accordingly by detecting the temperature near the target heating component 300. For example, a temperature sensor can be set at the first position F1 and the second position F2. The controller of the electronic device obtains the temperature of the first position F1 and the second position F2 through the temperature sensor and compares them. Then, when the temperature difference between the two positions meets the preset condition (for example, the temperature difference exceeds 3°C, 5°C, 8°C or 10°C, etc.), the working state of the second fan 220 is adjusted to blow air toward the first position F1 or the second position F2 with a relatively high temperature, so as to preferentially dissipate heat to the target heating component 300 at the position.

[0085] In other embodiments, the electronic device can also adjust the working state of the second fan 220 according to the workload of the target heating component 300 at different positions, that is, the electronic device can be configured as follows: when the workload of the target heating component 300 at the first position F1 is greater than the workload of the target heating component 300 at the second position F2, the working state of the second fan 220 is adjusted to the first working state; when the workload of the target heating component 300 at the second position F2 is greater than the workload of the target heating component 300 at the first position F1, the working state of the second fan 220 is adjusted to the second working state. For example, when the target heating component 300 at the first position F1 is a central processing unit and the target heating component 300 at the second position F2 is a graphics processor, when there is a graphics processing task, the workload of the graphics processor is greater than the workload of the central processing unit, and at this time, the second fan 220 can blow air to the graphics processor instead of the central processing unit, so that the air volume of the second fan 220 is better utilized. The change in temperature near the target heating component 300 is the result after its workload is loaded, so adjusting the working state of the second fan 220 according to the workload of the target heating component 300 at different positions has better timeliness.

[0086] See also Fig.13 In some embodiments, the second fan 220 may have a third working state on the basis of the first working state and the second working state. In the third working state, the blowing path of the target blowing C includes the first position F1 and the second position F2, that is, the second fan 220 in the third working state generates target blowing C toward different target directions, including the target blowing C toward the first position F1 and the target blowing C toward the second position F2. Therefore, the second fan 220 can blow air toward the target heating component 300 at the first position F1 and the second position F2 at the same time.

[0087] In order to adjust the working state of the second fan 220, in some embodiments, the fan housing of the second fan 220 may have a first air outlet for conveying blown air, and the second fan 220 may include a first wind shield 223 slidably disposed on the first air outlet, the first air outlet having a first air outlet area 221 facing the first position F1 and a second air outlet area 222 facing the second position F2, and the first wind shield 223 may change the flow area of ​​the first air outlet area 221 and the second air outlet area 222 at the same time by sliding relative to the fan housing of the second fan 220. Figure 11~Figure 13The first air outlet area 221 and the second air outlet area 222 are two parts of the first air outlet. When the first air shield 223 slides relative to the fan housing of the second fan 220 toward the first air outlet area 221, the flow area of ​​the first air outlet area 221 gradually decreases, and the flow area of ​​the second air outlet area 222 gradually increases. Conversely, when the first air shield 223 slides relative to the fan housing of the second fan 220 toward the second air outlet area 222, the flow area of ​​the second air outlet area 222 gradually decreases, and the flow area of ​​the first air outlet area 221 gradually increases. It can be seen that the adjustment of the target blowing C in two different target directions can be achieved by setting a wind shield, which is conducive to simplifying the structure and reducing the volume of the second fan 220.

[0088] See also Fig.11 , the first wind shield 223 can be set as a rack, and the driving device 224 can include a gear meshing with the first wind shield 223. Under the drive of the gear, the first wind shield 223 can slide relative to the fan housing of the second fan 220. Alternatively, the board surface of the first wind shield 223 can be set as a structure without teeth. For example, the driving device 224 can include a roller that can provide a large friction force. The roller is in contact with the board surface of the first wind shield 223. Under the drive of the roller, the first wind shield 223 can slide relative to the fan housing of the second fan 220. The roller can be a rubber wheel, a plastic wheel, etc., as long as the friction between the roller and the first wind shield 223 can drive the first wind shield 223 to slide. Fig.11 In the illustrated embodiment, the angle between the first air outlet area 221 and the second air outlet area 222 may be approximately a right angle. In other embodiments, the angle between the first air outlet area 221 and the second air outlet area 222 may also be set to other values, such as 60°, 120° or 180°.

[0089] In some embodiments, the fan housing of the second fan 220 can be provided with air outlets for different target directions, and the flow area can be adjusted independently of each other. For example, the fan housing of the second fan 220 can have a second air outlet facing the first position F1 and a third air outlet facing the second position F2, and the second fan 220 can include a second wind shield movably disposed at the second air outlet and a third wind shield movably disposed at the third air outlet, and the second wind shield and the third wind shield are used to adjust the flow area of ​​the second air outlet and the third air outlet, respectively. The movable connection mode between the second wind shield and the third wind shield and the fan housing of the second fan 220 can be the same or different, for example, one of the second wind shield and the third wind shield can be rotatably connected to the fan housing, and the flow area can be adjusted by rotating the blades of a shutter, and the other can be slidably connected to the fan housing, and the flow area can be adjusted by a rolling door. For another example, the second wind shield and the third wind shield can both be rotatably connected to the fan housing, or both can be slidably connected to the fan housing. By providing two air outlets that can independently adjust the flow areas on the fan housing of the second fan 220 , the ratio of the air volume blown toward different target directions by the second fan 220 can be adjusted more flexibly.

[0090] It is understandable that the above-mentioned method for adjusting the working state of the second fan 220 is to adjust the flow area of ​​the air outlet on the fan housing of the second fan 220. In other embodiments, the second fan 220 can also be adjusted in other ways. For example, the fan housing of the second fan 220 can be configured to be rotatably connected to the housing 100, and the electronic device can include a driving device for driving the fan housing of the second fan 220 to rotate relative to the housing 100. By driving the second fan 220 to rotate as a whole relative to the housing 100, the position of the air outlet on the fan housing of the second fan 220 can be changed. In addition, the method for adjusting the working state of the second fan 220 can also be a combination of the above methods, that is, the second fan 220 can be configured such that the fan housing is rotatably connected to the housing 100, and a windshield capable of changing the flow area of ​​the air outlet is also provided.

[0091] In some embodiments, the electronic device may have at least a first working condition and a second working condition, the workload of the second working condition is greater than the workload of the first working condition, when the electronic device is in the first working condition, the second fan 220 blows out air, and the first fan 210 does not blow out air; when the electronic device is in the second working condition, the first fan 210 blows out air. The first fan 210 can generate a first blowing air A blowing toward the heat dissipation port 110 and a second blowing air B blowing toward the target heating component 300 in the working state, wherein the first blowing air A is mainly used to dissipate heat to the target position 410 in the blowing path of the first blowing air A, and the heat of the target position 410 mainly comes from the heat from the target heating component 300 conducted by the first heat conducting member 400. When the workload of the electronic device is small, the heat at the target position 410 in the blowing path of the first blowing air A is relatively small. In order to avoid wasting air volume, the first fan 210 may not be started. As the workload of the electronic device gradually increases, the heat conducted to the target position 410 by the first heat conducting member 400 gradually increases. In order to better meet the heat dissipation requirements, the first fan 210 may be started.

[0092] In some embodiments, the electronic device can be configured as follows: the heat generated by the workload in the first working condition is not greater than the heat delivered by the second fan 220, and the heat generated by the workload in the second working condition is greater than the heat delivered by the second fan 220. That is, when the electronic device is in the first working condition, the heat generated by the workload does not exceed the heat delivered by the second fan 220, and when the electronic device is in the second working condition, the heat generated by the workload exceeds the heat delivered by the second fan 220. Such a configuration can make the heat removal capacity of the second fan 220 more fully utilized in the working state of the electronic device, which is conducive to avoiding the waste of air volume caused by turning on the first fan 210 when the heat removal capacity of the second fan 220 is not fully utilized. It should be noted that "heat delivery" refers to the heat that can be transported by blowing in the working state of the fan, which represents the heat removal capacity of the fan. In the case where the second fan 220 is set as a fan with adjustable speed, the above-mentioned heat delivery can be understood as the heat delivery corresponding to the maximum speed of the second fan 220.

[0093] In some embodiments, when the electronic device is in the second working condition, the first fan 210 and the second fan 220 may both blow air; or, the electronic device may have a third working condition, the workload of the third working condition is greater than the workload of the second working condition, and when the electronic device is in the second working condition, the first fan 210 blows air, and the second fan 220 does not blow air; when the electronic device is in the third working condition, the first fan 210 and the second fan 220 both blow air. For example, the third working condition may be set to a working condition where the workload is greater than 60% of the full load (i.e., the maximum load capacity) of the electronic device, and under the second working condition, both the first fan 210 and the second fan 220 need to blow air to meet the heat dissipation requirement. The second working condition may be set to a working condition where the workload is between 40% and 60% of the full load (i.e., the maximum load capacity) of the electronic device, and under the second working condition, only the first fan 210 alone needs to blow air to meet the heat dissipation requirement.

[0094] In some embodiments, the electronic device may be configured as follows: when the electronic device is in the first working condition, the electronic device runs the system program but does not run the application program, and when the electronic device is in the second working condition, the electronic device runs at least one application program. It is understandable that the electronic device realizes its function by running the program, and the program can be divided into two categories: system program and application program. The system program refers to a program designed for easy use and full use of the system performance, such as an operating system, a compiler, etc., and the application program refers to a program designed to solve specific user needs, such as a browser, office software, etc. When the electronic device does not run any application program and only runs the system program, although the electronic device generates a certain amount of heat, the heat is small. At this time, the first fan 210 can be in a non-working state, and the second fan 220 in a working state meets the electronic device's demand for heat dissipation air volume. When the electronic device runs the application program, the first fan 210 is started again. It should be noted that after the first fan 210 is started, the second fan 220 can be in a working state or a non-working state, that is, whether the first fan 210 and the second fan 220 are in a working state at the same time can be set as needed.

[0095] In some embodiments, the working mode of the electronic device can be divided into an extremely low power consumption mode, a light load mode, a medium load mode and a high load mode according to the heat generation from low to high. In the extremely low power consumption mode, the user does not open any application; in the light load mode, the user opens a single and low-power consumption application, for example, the user opens a single browser to surf the Internet, or the user opens a single document editing software to work; in the medium load mode, the user opens multiple applications, for example, the user opens a browser for surfing the Internet and a document editing software for office use; in the high load mode, the user opens a high-power consumption application, for example, the user opens a game software, an image editing software, etc. The extremely low power consumption mode can be set as the first working condition of the electronic device, and any one of the light load mode, the medium load mode and the high load mode can be set as the second working condition of the electronic device. In the case where the light load mode is set as the second working condition of the electronic device, the second fan 220 can be in a non-working state, and the first fan 210 in a working state meets the demand of the electronic device for heat dissipation air volume. In the case where the medium load mode or the high load mode is set as the second working condition of the electronic device, the first fan 210 and the second fan 220 can both be in a working state to jointly meet the demand of the electronic device for heat dissipation air volume.

[0096] In some embodiments, the electronic device can be configured as follows: the circuit board where the target heating component 300 is located is provided with a board temperature sensor, and when the electronic device is in the first working condition, the measured value of the board temperature sensor is not greater than the preset temperature, and when the electronic device is in the second working condition, the measured value of the board temperature sensor is greater than the preset temperature. The board temperature sensor is a temperature sensor installed on the circuit board and is mainly used to measure the internal temperature of the circuit board. The board temperature sensor can be of different types such as thermocouples and thermistors. When the measured value of the board temperature sensor is not greater than the preset temperature, the first fan 210 can be in a non-working state, and the second fan 220 in a working state meets the electronic device's demand for heat dissipation air volume. When the measured value of the board temperature sensor is greater than the preset temperature, the first fan 210 is started again. The preset temperature can be any value in the range of 35°C to 50°C, for example, it can be set to 40°C, 45°C, etc.

[0097] See also Figure 3 and Figure 5In some embodiments, the electronic device may include a third fan 230, which can generate a third blowing air D blowing toward the heat dissipation port 110 in a working state, or the third fan 230 can generate a third blowing air D blowing toward the heat dissipation port 110 and a fourth blowing air E blowing toward the target heat-generating component 300 in a working state. At least one target position 410 is in the blowing path of the third blowing air D, and the target position 410 in the blowing path of the third blowing air D is different from the target position 410 in the blowing path of the first blowing air A, and the heat dissipation port 110 blown toward by the third blowing air D is different from the heat dissipation port 110 blown toward by the first blowing air A. That is, the third fan 230 can be configured to blow toward the target position 410 that is not blown by the first fan 210, and on this basis, can also blow toward the target heat-generating component 300 at the same time. Figure 5 In the exemplary embodiment, the heat dissipation port 110 can be arranged on the same side of the housing 100, the second fan 220 can be arranged on the side of the target heat-generating component 300 away from the side, the first fan 210 and the third fan 230 can be located on opposite sides of the target heat-generating component 300, and when the first fan 210, the second fan 220 and the third fan 230 are all blowing air, the target blowing air C1 blown by the second fan 220 to the target heat-generating component 300 is mixed with the second blowing air B of the first fan 210 and the fourth blowing air E of the third fan 230, and then flows out of the housing 100 from the heat dissipation port 110 located in the middle; the second fan 220 blows to Figure 5 The target air C2 on the left side of the middle is sucked into the third fan 230 after passing through the heat generating component on the left side of the second fan 220. The second fan 220 blows toward Figure 5 The target air C3 on the middle right side is sucked into the first fan 210 after passing through the heat generating components on the right side of the second fan 220 .

[0098] When the electronic device is provided with the first fan 210, the second fan 220 and the third fan 230 at the same time, in some embodiments, the electronic device may have at least a fourth working condition, a fifth working condition and a sixth working condition, the workload of the fifth working condition is greater than the workload of the fourth working condition, and the workload of the sixth working condition is greater than the workload of the fifth working condition; when the electronic device is in the fourth working condition, the second fan 220 blows out air, and the first fan 210 and the third fan 230 do not blow out air; when the electronic device is in the fifth working condition, the first fan 210 and the third fan whose corresponding target position 410 along the first heat conductor 400 to the target heating component 300 is smaller blows out air, and the other does not blow air; when the electronic device is in the sixth working condition, the first fan 210, the second fan 220 and the third fan 230 all blow out air. It is understandable that the target position 410 in the blowing path of the third blowing D is different from the target position 410 in the blowing path of the first blowing A, and the lengths of the first heat conductor 400 between different target positions 410 and the target heating component 300 may be different, that is, the heat conduction distance between the target position 410 and the target heating component 300 may be different. As the workload of the electronic device increases, heat accumulation occurs earlier at the target position 410 having a relatively small heat conduction distance to the target heating component 300. For this reason, the third fan 230 or the first fan 210 corresponding to the target position 410 may be started first, thereby realizing the reasonable use of the air volume.

[0099] In some embodiments, the fourth operating condition can be set to a condition where the workload is no more than forty percent of the full load of the electronic device, the fifth operating condition can be set to a condition where the workload is between forty percent and sixty percent of the full load of the electronic device, and the sixth operating condition can be set to a condition where the workload is no less than sixty percent of the full load of the electronic device.

[0100] In an embodiment in which the third fan 230 can generate a third air D blowing toward the heat dissipation port 110 and a fourth air E blowing toward the target heat-generating component 300 in a working state, the distance from the third fan 230 to the target heat-generating component 300 along the blowing path of the fourth air E can be set to be different from the distance from the first fan 210 to the target heat-generating component 300 along the blowing path of the second air B, and the electronic device can be configured as follows: when the target heat-generating component 300 operates at a first load, the first fan 210 and the third fan 230 having a smaller distance to the target heat-generating component 300 blows out air at a first speed, and the other does not blow air or blows out air at a second speed that is lower than the first speed; when the target heat-generating component 300 operates at a second load greater than the first load, the first fan 210 and the third fan 230 having a smaller distance to the target heat-generating component 300 blows out air at a third speed that is higher than the first speed, and the other blows out air at a fourth speed that is higher than the second speed but lower than the third speed. That is, the electronic device can be configured to control the rotation speed of the first fan 210 and the third fan 230 according to the different load conditions of the target heat-generating component 300 based on the distance between the first fan 210 and the third fan 230 and the target heat-generating component 300, so as to achieve a better balance between the improvement of heat dissipation capacity and the suppression of fan noise. It should be noted that the fan blows out air at a certain speed, which means that the fan blows out air and the fan blades have a rotation speed of the above-mentioned certain speed.

[0101] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other. The term "and / or" used in this specification includes any and all combinations of one or more related listed items.

[0102] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electronic device, comprising: A housing, the housing comprising a heat dissipation port; Target heat generating components; a first fan, which, in a working state, can generate a first air flow toward the heat dissipation port and a second air flow toward the target heat-generating component; a first heat-conducting member, the first heat-conducting member being connected to the target heat-generating component, and the first heat-conducting member being capable of conducting heat of the target heat-generating component to one or more target positions, at least one of the target positions being in a blowing path of the first blowing; a second fan, wherein the second fan can generate targeted blowing in a target direction when in operation, wherein the target direction includes a direction toward the target heat-generating component; The blowing path of the target blowing does not include any of the target positions, or, along the blowing path of the target blowing, the time from the target blowing to the target heating component is a first time, and the time from the target blowing to the target position is a second time, and the second time is later than the first time.

2. The electronic device according to claim 1 comprises a plurality of heat-generating components, the plurality of heat-generating components comprising heat-generating components in a first part and heat-generating components in a second part, the heat-generating components in the first part are the target heat-generating components, and the target direction comprises a direction toward at least one heat-generating component in the second part.

3. The electronic device according to claim 2, comprising: A heat conducting plate, the heat conducting plate being provided with a supporting portion for connecting to a carrier carrying the plurality of heat generating components, the heat conducting plate having a first plate surface facing the carrier; The fan housing of the second fan is installed in the first area of ​​the first board surface and is heat-transfer connected to the heat-conducting plate. The second area of ​​the first board surface is heat-transfer connected to the heat-generating component of the second part. The second area is different from the first area.

4. The electronic device according to claim 3, comprising at least one of the following items: The electronic device comprises a flow guide disposed on the first plate surface of the heat conducting plate, the flow guide being used to form an air flow channel on the first plate surface leading to the heat generating components of the second part; The electronic device comprises a windshield strip disposed on a second board surface of the heat conducting plate opposite to the first board surface, the windshield strip extending along a first edge of the second board surface, the first edge being an edge of the second board surface close to the heat generating component of the first portion; The second region is provided with a convex shell protruding toward the heat-generating component of the second portion, and the outer surface of the convex shell is used for heat-transfer connection with the heat-generating component of the second portion.

5. The electronic device according to any one of claims 1 to 4, wherein the target heat generating components are multiple and are arranged at least at a first position and a second position, and the first position and the second position are different; The working state of the second fan includes a first working state and a second working state. In the first working state, the blowing path of the target air blowing includes the first position and does not include the second position; in the second working state, the blowing path of the target air blowing includes the second position and does not include the first position.

6. The electronic device according to claim 5, when the temperature difference between the first position and the second position satisfies a first preset condition, the working state of the second fan is adjusted to the first working state; When the temperature difference between the first position and the second position meets a second preset condition, the working state of the second fan is adjusted to the second working state.

7. The electronic device according to claim 5, wherein the fan housing of the second fan has a first air outlet for conveying blown air, the second fan comprises a first wind shield slidably disposed on the first air outlet, the first air outlet has a first air outlet area facing the first position and a second air outlet area facing the second position, and the first wind shield changes the flow areas of the first air outlet area and the second air outlet area simultaneously by sliding relative to the fan housing of the second fan; or The fan housing of the second fan has a second air outlet facing the first position and a third air outlet facing the second position, and the second fan includes a second wind shield plate movably disposed at the second air outlet and a third wind shield plate movably disposed at the third air outlet, and the second wind shield plate and the third wind shield plate are used to adjust the flow areas of the second air outlet and the third air outlet, respectively.

8. The electronic device according to claim 1, wherein the electronic device has at least a first working condition, a second working condition and a third working condition, the workload of the third working condition is greater than the workload of the second working condition, and the workload of the second working condition is greater than the workload of the first working condition; When the electronic device is in the first working condition, the second fan blows air, and the first fan does not blow air; when the electronic device is in the second working condition, the first fan blows air, and the second fan blows air or does not blow air; when the electronic device is in the third working condition, both the first fan and the second fan blow air.

9. The electronic device according to claim 8, when the electronic device is in the first working state, the electronic device runs a system program but does not run an application program, and when the electronic device is in the second working state, the electronic device runs at least one application program; and / or, The circuit board where the target heat-generating component is located is provided with a board-end temperature sensor. When the electronic device is in the first operating condition, the measured value of the board-end temperature sensor is not greater than a preset temperature. When the electronic device is in the second operating condition, the measured value of the board-end temperature sensor is greater than the preset temperature.

10. The electronic device according to claim 1, comprising: a third fan, wherein the third fan can generate a third airflow toward the heat dissipation port when in operation, or the third fan can generate a third airflow toward the heat dissipation port and a fourth airflow toward the target heat-generating component when in operation; At least one of the target positions is in the blowing path of the third blowing, the target position in the blowing path of the third blowing is different from the target position in the blowing path of the first blowing, and the heat dissipation port to which the third blowing is blown is different from the heat dissipation port to which the first blowing is blown.

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