Electronic equipment

Abstract

The invention provides electronic equipment, relates to the technical field of electronic products, and can reduce the possibility that a battery cover generates local hot spots when a user holds the electronic equipment by hand, improve the touch sense and the use comfort of the electronic equipment, increase the heat dissipation uniformity and improve the heat dissipation efficiency. The electronic equipment comprises a battery cover and a heating part. The battery cover includes a first surface and a second surface, the first surface forms a partial region of an outer surface of the electronic device, and the second surface is opposite to the first surface. The heating component is located on the side, back to the first surface, of the second surface. Wherein the second surface is provided with at least one groove, and the occupied area of the groove on the second surface is overlapped with the orthographic projection area of the heating component on the second surface.

Description

Technical Field

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

[0002] Mobile phones, tablet computers and other electronic devices have battery covers, which are used to protect internal components of the electronic device, such as batteries, motherboards, and camera modules. When users hold electronic devices, their palms come into contact with the battery cover, and they can feel the heat from the battery cover. The greater the heat of the battery cover, the worse the user's comfort.

[0003] As electronic devices (especially foldable screen mobile phones) become thinner and lighter, the gap between internal components and the battery cover is getting smaller and smaller. When users hold electronic devices, they inevitably apply a certain amount of pressing force to the battery cover. Under the action of this pressing force, the battery cover bends toward the internal space of the electronic device, which easily makes the battery cover and the internal heat-generating components come into contact with each other, thus forming a heat conduction path. When the electronic device is working, the heat is conducted to the battery cover along this heat conduction path, causing it to be hot, thereby affecting the touch and comfort of the electronic device. At the same time, local hot spots are formed on the battery cover, which makes the heat dissipation uniformity of the electronic device poor and the heat dissipation efficiency low. Summary of the invention

[0004] The present application provides an electronic device that can reduce the possibility of local hot spots on a battery cover when a user holds the electronic device, improve the touch and comfort of the electronic device, increase heat dissipation uniformity, and improve heat dissipation efficiency.

[0005] To achieve the above-mentioned purpose, the present application provides an electronic device, which includes a battery cover and a heat-generating component.

[0006] The battery cover includes a first surface and a second surface, the first surface forms a partial area of ​​the outer surface of the electronic device, and the second surface is opposite to the first surface.

[0007] The heat generating component is located on a side of the second surface facing away from the first surface.

[0008] The second surface is provided with at least one groove, and an occupied area of ​​the groove on the second surface overlaps with an orthographic projection area of ​​the heat generating component on the second surface.

[0009] Since the area occupied by the groove on the second surface overlaps with the orthographic projection area of ​​the heat-generating component on the second surface, the groove is located on the shortest heat dissipation path from the heat-generating component to the battery cover. In this way, the side wall of the groove can play a supporting role to prevent the bottom wall of the groove from deforming toward the heat-generating component under the pressure of the user holding it. This avoids the formation of a heat conduction path on the above-mentioned shortest heat dissipation path, and prevents the heat of the heat-generating component from being directly conducted to the battery cover along the heat conduction path. This reduces the possibility of local hot spots on the battery cover, and improves the touch and comfort of the electronic device. At the same time, by reducing the possibility of local hot spots on the battery cover, the heat dissipation uniformity of the electronic device can also be increased, and the heat dissipation efficiency can be improved.

[0010] In a possible implementation, a first heat insulator is provided in the groove. The first heat insulator includes but is not limited to at least one of air, heat insulating silica gel, heat insulating gel, glass wool and polyurethane. The first heat insulator has a low thermal conductivity, which can prevent the heat of the heat generating component from being transferred to the battery cover along the shortest heat dissipation path, thereby reducing the possibility of generating local hot spots on the battery cover, improving heat dissipation uniformity and increasing heat dissipation efficiency.

[0011] In a possible implementation, the thermal conductivity of the first thermal insulator may be smaller than the thermal conductivity of the battery cover. In this way, the first thermal insulator has a lower thermal conductivity, which can effectively prevent the heat of the heat-generating component from being transferred to the battery cover along the shortest heat dissipation path.

[0012] Optionally, the heat generating component may be an electronic component that generates heat during operation. For example, the heat generating component may be a processor, a memory, a BTB connector, a cable socket, etc. Of course, the heat generating component may also be a structural member that conducts heat. For example, the heat generating component may be a component such as a shielding cover that is directly or indirectly thermally conductive with the heat source device.

[0013] In a possible implementation manner, the electronic device further includes a circuit board, a first connector, and a second connector.

[0014] The circuit board is located on the side of the second surface away from the first surface. The first connector is arranged on the surface of the circuit board facing the battery cover. The second connector is located between the first connector and the battery cover and is connected with the first connector, and the second connector forms the above-mentioned heating component.

[0015] Since the connector assembly composed of the first connector and the second connector protrudes higher from the circuit board, the distance between the second connector and the battery cover is closer, the above-mentioned shortest heat dissipation path is shorter, and the heat of the second connector is easily transferred to the battery cover.

[0016] In addition, since the connector assembly composed of the first connector and the second connector occupies a small area on the circuit board, the heat of the second connector is easily concentrated and conducted to a local area of ​​the battery cover, causing local hot spots to appear on the battery cover, resulting in local areas of the battery cover being hot to the touch, thereby affecting the touch and comfort of the electronic device.

[0017] Based on this, the groove can effectively prevent the heat of the second connector from being transferred to the battery cover, effectively reducing the risk of local hot spots appearing on the battery cover and effectively improving the uniformity of heat dissipation.

[0018] Optionally, the first connector and the second connector are BTB connectors or RF connectors.

[0019] In a possible implementation, the groove is formed by the second surface being sunken toward the first surface. In this way, the groove is sunken into the battery cover, thereby utilizing the internal space of the battery cover to form the above groove, which can avoid the thickness overlap between the groove and the battery cover, and is conducive to the thickness reduction of the electronic device.

[0020] In a possible implementation, the electronic device further includes at least one annular ridge. The at least one annular ridge is disposed on the second surface, and the annular ridge and the portion of the battery cover surrounded by the annular ridge form the above-mentioned groove. In this way, the groove is disposed outside the battery cover, which can prevent the groove from affecting the structural strength of the battery cover.

[0021] In a possible implementation manner, the groove may further include a first groove portion and a second groove portion.

[0022] The first groove portion is formed by the second surface being recessed toward the first surface, the second groove portion is formed by a partial space surrounded by the annular convex ridge, and the second groove portion is opposite to and connected with the first groove portion.

[0023] In this way, under the premise of a certain depth of the groove, the depth of the groove extending into the battery cover is small, which can ensure the structural strength of the battery cover. At the same time, the distance that the annular ridge protrudes from the second surface is small, which can reduce the stacking thickness and is conducive to achieving thinning of the electronic device.

[0024] In a possible implementation, the orthographic projection area of ​​the heat generating component on the second surface is the first area, and the occupied area of ​​the groove on the second surface is the second area. The second area is greater than or equal to 1 / 10 times the first area, and less than or equal to 5 times the first area. Specifically, the second area can be 1 / 10 times, 1 / 5 times, 1 times, 2 times, 3 times, 4 times, or 5 times the first area.

[0025] In this way, the area of ​​the groove is moderate, which can effectively ensure the heat insulation effect and improve the touch of the electronic device.

[0026] In a possible implementation, at least one ridge is provided on the bottom surface of the groove, and the ridge may extend along a straight line, a curve, or a ring line, which is not specifically limited in the present application. With the at least one ridge, a support function may be further provided to prevent the bottom wall of the groove from deforming toward the heat generating component under the pressure of the user holding the device.

[0027] In a possible implementation, there are multiple grooves, and multiple groove arrays are arranged on the second surface.

[0028] In this way, under the premise that the area of ​​the preset region for setting the grooves on the second surface is certain, when multiple grooves are set in the preset region, the area occupied by each groove on the second surface is relatively small.

[0029] When the groove is recessed into the battery cover, compared with a solution of setting one groove in a preset area, when multiple grooves are set, the volume occupied by the grooves in the battery cover is smaller, and the structural strength of the battery cover can be ensured.

[0030] When the side wall of the groove is formed by annular ridges, the number of the annular ridges is large, the supporting performance of the battery cover is better, and the battery cover can be effectively prevented from bending toward the heat generating component under the pressing force.

[0031] In a possible implementation, the depth of the groove is greater than or equal to 0.01 mm and less than or equal to 0.4 mm. Specifically, the depth of the groove may be 0.01 mm, 0.05 mm, 0.08 mm, 0.1 mm, 0.2 mm, 0.3 mm or 0.4 mm.

[0032] When the depth of the groove is within this range, the height of the side wall of the groove is moderate, which can play an effective supporting role and prevent the bottom wall of the groove from deforming toward the heat-generating component under the pressure of the user holding it.

[0033] At the same time, when the groove is recessed into the battery cover, the recessed depth is moderate, and the structural strength of the battery cover is good. When the side wall of the groove is formed by an annular convex ridge, the height of the annular convex ridge protruding from the second surface is moderate, and the stacking thickness of the groove and the battery cover is moderate, which is conducive to the thickness reduction of the electronic device.

[0034] In a possible implementation, part of the area occupied by the groove on the second surface is located within the orthographic projection area of ​​the heat generating component on the second surface, and the other part is located outside the orthographic projection area of ​​the heat generating component on the second surface. In this way, only part of the battery cover or the annular ridge forming the edge of the groove is on the shortest heat dissipation path, or none of them is on the shortest heat dissipation path. Under the pressure of the user, only a small amount of heat or almost no heat is transmitted along the shortest heat dissipation path, so the generation of local hot spots on the battery cover can be effectively avoided.

[0035] In a possible implementation, the electronic device further includes a press-fit bracket, which is located between the heat-generating component and the battery cover, and is fixedly connected to the circuit board.

[0036] The press-fit bracket can be used to define the relative position of the heat-generating component and the circuit board, thereby improving the structural stability.

[0037] In a possible implementation, the area occupied by the groove on the second surface is the first area, and the orthographic projection area of ​​the press-fit bracket on the second surface is the second area. At least part of the contour line of the first area is located in the second area and is spaced apart from the contour line of the second area.

[0038] In this way, part of the battery cover or the annular ridge forming the edge of the groove can be at least partially supported on the pressing bracket to provide stable support for the battery cover, preventing the battery cover from bending toward the heat-generating component under external pressing force, thereby avoiding thermal conduction between the battery cover and the heat-generating component.

[0039] In one possible implementation, a portion of the contour line of the first area is located in the second area and is spaced apart from the contour line of the second area, and another portion of the contour line of the first area is located outside the second area and is spaced apart from the contour line of the second area. In this way, only a portion of the battery cover or annular ridge that forms the edge of the groove is located on the shortest heat dissipation path from the press-fit bracket to the battery cover. Under the pressure of the user, only a small amount of heat is transmitted along the shortest heat dissipation path from the press-fit bracket to the battery cover, thereby effectively avoiding the generation of local hot spots on the battery cover. In addition, it is possible to avoid the groove and the press-fit bracket from forming a closed space to prevent the internal air from expanding due to heat, resulting in local defects in the battery cover.

[0040] Optionally, the contour line of the first area includes a first section and a second section, the first section is located in the second area and spaced apart from the contour line of the second area, and the second section is located outside the second area.

[0041] The first section and the second section do not include the intersection of the contour line of the first area and the contour line of the second area. In this way, the battery cover or the annular ridge forming the first section can be supported on the pressing bracket to form a stable support for the battery cover to prevent the battery cover from bending toward the heat generating component under the external pressing force.

[0042] At the same time, since the second section is located outside the second area, part of the battery cover or the annular ridge forming the second section is not located on the shortest heat dissipation path from the press-fit bracket to the battery cover. Under the pressure of the user, only a small amount of heat is transmitted along the shortest heat dissipation path from the press-fit bracket to the battery cover, thereby effectively avoiding the generation of local hot spots on the battery cover.

[0043] Optionally, the contour line of the first region includes a first section and a second section. The first section and the second section are located on opposite sides of a geometric center of the first region, and the first section and the second section are located in the second region and spaced apart from the contour line of the second region.

[0044] In this way, the two parts of the battery cover or the annular ridge which respectively form the first section and the second section can be supported on the pressing bracket.

[0045] At the same time, since the first section and the second section are located on opposite sides of the geometric center of the first area, the two parts of the battery cover or the annular ridge forming the first section and the second section are also located on opposite sides of the geometric center of the first area, thereby making the supporting force of the battery cover more balanced and effectively preventing the battery cover from bending toward the heat-generating component under the action of external pressing pressure.

[0046] Optionally, the first area is located within the second area, and a contour line of the first area is spaced apart from a contour line of the second area.

[0047] In this way, the part of the battery cover or the annular ridge that forms the groove is supported on the pressing bracket as a whole, which has a better supporting effect on the battery cover and can effectively prevent the battery cover from bending toward the heat-generating component under the action of external pressing force.

[0048] In a possible implementation, the press-fit bracket is provided with at least one heat-insulating through hole. With the at least one heat-insulating through hole, the heat of the heat-generating component can be prevented from being transferred to the battery cover, further reducing the possibility of generating local hot spots on the battery cover.

[0049] Optionally, a second thermal insulator is provided in the thermal insulation through hole, and the thermal conductivity of the second thermal insulator is less than the thermal conductivity of the pressed bracket. The second thermal insulator includes but is not limited to at least one of air, thermal insulation silica gel, thermal insulation gel, glass wool and polyurethane. The second thermal insulator has a low thermal conductivity, which can prevent the heat of the heat-generating component from being transferred to the battery cover, thereby reducing the possibility of generating local hot spots on the battery cover, and can improve the heat dissipation uniformity and increase the heat dissipation efficiency.

[0050] In a possible implementation, there are multiple thermal insulation through holes, and multiple thermal insulation through hole arrays are arranged on the press-fit bracket.

[0051] In this way, under the premise that the area of ​​the setting area of ​​the thermal insulation through hole is certain, compared with the solution of setting one thermal insulation through hole, when multiple thermal insulation through holes are set, the setting area of ​​each thermal insulation through hole is smaller, which can ensure the structural strength of the pressed bracket.

[0052] In a possible implementation, there are multiple grooves, and the multiple groove arrays are arranged on the second surface, and the orthographic projections of the multiple thermal insulation holes on the second surface are staggered with the occupied areas of the multiple grooves on the second surface.

[0053] That is to say, the geometric centers of the orthographic projections of the multiple thermal insulation holes on the second surface do not coincide with the geometric centers of the occupied areas of the multiple grooves on the second surface, and at least part of the orthographic projections of the thermal insulation holes on the second surface are located outside the occupied areas of the grooves on the second surface.

[0054] In this way, the area of ​​the thermal insulation layer is larger than the sum of the areas of the multiple thermal insulation holes, and the area of ​​the thermal insulation layer is also larger than the sum of the areas of the multiple grooves, so the area of ​​the thermal insulation layer can be increased and the thermal insulation performance can be improved.

[0055] Optionally, the entire orthographic projection of the thermal insulation through hole on the second surface may be located outside the occupied area of ​​the groove on the second surface.

[0056] In this way, the area of ​​the thermal insulation layer is the sum of the areas of the multiple thermal insulation holes and the areas of the multiple grooves. Therefore, with the help of the multiple grooves and the multiple thermal insulation holes, the area of ​​the thermal insulation layer can be maximized and the thermal insulation performance can be improved.

[0057] At the same time, the arrangement density of the grooves on the battery cover can be relatively small, and the arrangement density of the heat-insulating through holes on the press-fit bracket can be relatively small, so that the structural strength of the battery cover and the press-fit bracket can be ensured.

[0058] In a possible implementation, at least one heat-insulating blind hole is provided on the surface of the press-fit bracket facing the battery cover or on the surface of the press-fit bracket facing the heat-generating component. With the at least one heat-insulating blind hole, the heat of the heat-generating component can also be prevented from being transferred to the battery cover, further reducing the possibility of generating local hot spots on the battery cover.

[0059] In a possible implementation, the electronic device further includes a heat sink, which is disposed between the pressed bracket and the groove, and an orthographic projection area of ​​the heat sink on the second surface is larger than an area occupied by the groove on the second surface.

[0060] In this way, with the help of the heat sink, the heat of the heat-generating components can be conducted along the plane parallel to the battery cover to the area outside the groove, which can extend the heat conduction path, avoid heat concentration, prevent local hot spots from forming on the battery cover, improve heat dissipation uniformity, and improve heat dissipation performance.

[0061] Optionally, the heat sink is made of graphene or graphite.

[0062] Optionally, the electronic device is a foldable screen mobile phone.

[0063] Optionally, the foldable screen mobile phone includes an internal screen camera, and the second connector is a connector for the internal screen camera. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] Figure 1A perspective view of an electronic device provided for some embodiments of the present application;

[0065] Figure 2 for Figure 1 A three-dimensional view of the electronic device as viewed from a direction D1;

[0066] Figure 3 for Figure 1 A schematic diagram of the structure of the electronic device when the first screen is in a folded state;

[0067] Figure 4 for Figure 1 A schematic diagram of a cross-sectional structure of the electronic device shown along the AA direction;

[0068] Figure 5 for Figure 4 An assembly diagram of a circuit board, a first connector, a second connector and a press-fit bracket in the electronic device shown;

[0069] Figure 6 for Figure 4 A schematic diagram of the structure of a battery cover at the second surface of the electronic device shown;

[0070] Figure 7 for Figure 4 A schematic diagram of the relative positions of the occupied area of ​​the groove on the second surface and the orthographic projection area of ​​the heat generating component on the second surface in the electronic device shown;

[0071] Figure 8 for Figure 1 Another schematic diagram of a cross-sectional structure of the electronic device shown along the AA direction;

[0072] Fig. 9 for Figure 4 A schematic diagram of the relative positions of the occupied area of ​​the groove on the second surface and the orthographic projection area of ​​the press-fit bracket on the second surface in the electronic device shown;

[0073] Fig.10 for Figure 4 A schematic diagram of another relative position of the occupied area of ​​the groove on the second surface and the orthographic projection area of ​​the press-fit bracket on the second surface in the electronic device shown;

[0074] Fig.11 for Figure 4 A schematic diagram of another relative position of the occupied area of ​​the groove on the second surface and the orthographic projection area of ​​the press-fit bracket on the second surface in the electronic device shown;

[0075] Fig.12 for Figure 4 A schematic diagram of another structure of a battery cover at the second surface of the electronic device shown;

[0076] Fig.13for Figure 1 Another schematic diagram of a cross-sectional structure of the electronic device shown along the AA direction;

[0077] Fig.14 A schematic diagram of the structure of a press-fit bracket provided in some embodiments of the present application;

[0078] Fig.15 Schematic diagram of the cross-sectional structure of electronic devices provided in some other embodiments of the present application. DETAILED DESCRIPTION

[0079] In the embodiments of the present application, the terms "first", "second", "third", and "fourth" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "third", and "fourth" may explicitly or implicitly include one or more of the features.

[0080] In the embodiments of the present application, the terms "include", "comprises" 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 includes 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 sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0081] The embodiment of the present application provides an electronic device, which can be a user equipment (UE) or a terminal device, for example, the electronic device can be a tablet computer (portable android device, PAD), a personal digital assistant (personal digital assistant, PDA), a handheld device with a wireless communication function, a computing device, a vehicle-mounted device, a wearable device, a virtual reality (virtual reality, VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in self-driving, a wireless terminal in remote medical, a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in a smart city (smart city), a wireless terminal in a smart home (smart home), and other mobile terminals or fixed terminals. In the embodiment of the present application, the form of the electronic device is not specifically limited.

[0082] See also Figure 1 , Figure 1 This is a three-dimensional diagram of an electronic device 10 provided in some embodiments of the present application. This embodiment and the following embodiments are exemplified by using the electronic device 10 as a folding screen device, which may be, for example, a folding screen mobile phone. Figure 1 In the embodiment, the folding screen device is in an unfolded state, in which the electronic device is approximately in the shape of a rectangular flat plate. Based on this, in order to facilitate the description of the embodiments below, an XYZ coordinate system is established for the electronic device 10 in the unfolded state, and the length direction of the electronic device 10 is defined as the X-axis direction, the width direction of the electronic device 10 is defined as the Y-axis direction, and the thickness direction of the electronic device 10 is defined as the Z-axis direction. It can be understood that the coordinate system setting of the electronic device 10 can be flexibly set according to actual needs, and no specific limitation is made here. In some other embodiments, when the electronic device 10 is in the unfolded state, the shape of the electronic device 10 can also be a square flat plate, a circular flat plate, an elliptical flat plate, and the like.

[0083] Please also read Figure 1 and Figure 2 , Figure 2 for Figure 1 The electronic device 10 is a stereoscopic view when viewed from a direction D1. The electronic device 10 includes a first screen 1, a support device 2, a second screen 3, a battery cover 4, an external screen camera 5, an internal screen camera 6 and at least one rear camera 7.

[0084] Understandably, Figure 1 and Figure 2 The electronic device 10 includes some components, and the actual shape, size, position and structure of these components are not limited to the following. Figure 1 and Figure 2 In some other embodiments, the electronic device 10 may not include at least one of these components.

[0085] Please refer to Figure 1 The first screen 1 is also called the inner screen, and is used to display information such as images and videos. The first screen 1 can be an organic light-emitting diode (OLED) screen, a micro organic light-emitting diode (micro organic light-emitting diode) screen, or a quantum dot light emitting diode (QLED) screen, etc.

[0086] The first screen 1 includes a display surface S01, through which a user can watch an image or video displayed on the first screen 1. The first screen 1 has a back side, which refers to a side of the first screen 1 that is away from the display surface S01.

[0087] The supporting device 2 is located at the back side of the first screen 1 and is fixed to the first screen 1. The supporting device 2 is used to support the first screen 1 and protect the internal components.

[0088] In some embodiments, the support device 2 includes a first middle frame 21 and a second middle frame 22. When the electronic device 10 is another product, the electronic device 10 may not include the second middle frame 22, or in addition to the first middle frame 21 and the second middle frame 22, also include a third middle frame, a fourth middle frame or a fifth middle frame, etc., to form a three-fold folding screen device, a four-fold folding screen device or a five-fold folding screen device, which is not specifically limited in this application.

[0089] The first middle frame 21 and the second middle frame 22 are used to support the first screen 1. For details, please refer to Figure 1 The first screen 1 includes a first screen portion 11 and a second screen portion 12 . The first screen portion 11 is supported by a first middle frame 21 , and the second screen portion 12 is supported by a second middle frame 22 .

[0090] Please refer to Figure 2The second screen 3 is also called the outer screen. The second screen 3 is arranged on the side of the first middle frame 21 that is opposite to the first screen portion 11, and the second screen 3 includes a display surface S02. The display surface S02 of the second screen 3 is opposite to the display surface of the first screen portion 11. The display surface of the first screen portion 11 is a partial area of ​​the display surface S01 located in the first screen portion 11.

[0091] There is a first accommodating cavity between the second screen 3 and the first middle frame 21, and the first accommodating cavity is used to accommodate components such as batteries, circuit boards, external screen cameras 5, speaker modules, arrays, etc. Among them, the light incident surface of the external screen camera 5 faces the second screen 3, and a first light opening C1 is provided on the second screen 3, and the light incident surface of the external screen camera 5 is opposite to the first light opening C1.

[0092] In some other embodiments, the second screen 3 may be replaced by a battery cover, which is not specifically limited in the present application.

[0093] Please refer to Figure 2 The battery cover 4 can also be called the back cover. The battery cover 4 is arranged on the side of the second middle frame 22 facing away from the second screen portion 12. There is a second accommodating cavity between the battery cover 4 and the second middle frame 22, and the second accommodating cavity is used to accommodate components such as batteries, circuit boards, internal screen cameras 6, and rear cameras 7.

[0094] Among them, please refer to Figure 1 The light incident surface of the inner screen camera 6 faces the first screen 1. The first screen 1 is provided with a second light opening C2. The light incident surface of the inner screen camera 6 faces the second light opening C2. Please refer to Figure 2 , the light incident surface of at least one rear camera 7 faces the battery cover 4, and a camera decoration 41 is provided at a position corresponding to at least one rear camera 7 on the battery cover 4, and the camera decoration 41 is convexly arranged to increase the installation space of the rear camera 7 along the Z-axis direction. In other embodiments, the camera decoration 41 can also be flush with the battery cover 4 or concavely arranged. At least one third light opening C3 is provided on the camera decoration 41, and the at least one third light opening C3 is respectively opposite to the light incident surface of at least one rear camera 7. Figure 2 In the illustrated embodiment, the number of rear cameras 7 is three, and the number of third light openings C3 is also three.

[0095] The supporting device 2 also includes a rotating shaft mechanism, and the first middle frame 21 and the second middle frame 22 are rotatably connected by means of the rotating shaft mechanism, so that the first screen 1 can be Figure 1 The expanded state shown collapses to the collapsed state. Figure 1 In the , the first screen 1 is in the expanded state. Figure 3 , Figure 3 for Figure 1The schematic diagram of the structure of the electronic device 10 when the first screen 1 is in a folded state is shown. In this state, the first middle frame 21 and the second middle frame 22 are roughly stacked, and the first screen 1 is located between the first middle frame 21 and the second middle frame 22. The first screen 1 can be protected by the first middle frame 21 and the second middle frame 22 to prevent the first screen 1 from being scratched, and the electronic device 10 is folded for easy carrying. At the same time, the second screen 3 is exposed, and the second screen 3 can be used to realize a small screen display.

[0096] See also Figure 4 , Figure 4 for Figure 1 The electronic device 10 is shown as a schematic diagram of a cross-sectional structure along the AA direction. The battery cover 4 includes a first surface S1 and a second surface S2. The first surface S1 forms a part of the outer surface of the electronic device 10, and the second surface S2 is opposite to the first surface S1 and faces the second accommodating cavity.

[0097] On the basis of the above, please continue to refer to Figure 4 The electronic device 10 further includes a circuit board 8 , a first connector 81 , a second connector 82 and a press-fit bracket 83 .

[0098] The circuit board 8 is located on the side of the second surface S2 facing away from the first surface S1. Specifically, the circuit board 8 can be accommodated in the second accommodation cavity. The circuit board 8 is used to integrate electronic components and realize the electrical connection of various electronic components. The circuit board 8 can be a hard board, a soft board, or a circuit board combining hard and soft. In some embodiments, the circuit board 8 can be a hard board. Specifically, the circuit board 8 can be a printed circuit board (PCB).

[0099] The first connector 81 is arranged on the surface of the circuit board 8 facing the battery cover 4. The first connector 81 can be a board-to-board (BTB) connector, or a radio frequency connector (also called a cable socket). This embodiment is exemplified by the first connector 81 being a BTB connector, which cannot be regarded as a special limitation on the present application. On this basis, specifically, the first connector 81 can be a plug-in BTB connector, a contact BTB connector, or a magnetic BTB connector. This embodiment is exemplified by the first connector 81 being a plug-in BTB connector. The first connector 81 is electrically connected to other electronic components with the help of the circuit board 8.

[0100] The second connector 82 is located between the first connector 81 and the battery cover 4, and the second connector 82 is connected with the first connector 81. The second connector 82 may also be a BTB connector or a radio frequency connector. This embodiment is exemplified by the second connector 82 being a BTB connector. On this basis, the second connector 82 may also be a plug-in BTB connector, a contact BTB connector, or a magnetic BTB connector. This embodiment is exemplified by the second connector 82 being a plug-in BTB connector.

[0101] In some embodiments, please refer to Figure 4 The second connector 82 can be a connector for the internal screen camera 6.

[0102] For details, please continue to refer to Figure 4 , the internal screen camera 6 may include a camera body 61, a second connector 82 and an electrical connection structure 62. The camera body 61 is used to realize the shooting of videos and images. The second connector 82 is used to realize the detachable connection between the camera body 61 and other electronic components. The electrical connection structure 62 is connected between the camera body 61 and the second connector 82. In some embodiments, the circuit lead structure 62 may be a flexible printed circuit (FPC) or a structure formed by weaving a wire and a flexible material, which is not specifically limited in the present application.

[0103] In some embodiments, the second connector 82 includes a connector body 821 for mating with the first connector 81 and a support base 822 for supporting the connector body 821. The support base 822 is used to support the connector body 821, increase the structural strength of the connector body 821, and facilitate the connection between the connector body 821 and the first connector 81.

[0104] In some embodiments, the connector body 821 is disposed on one side of the electrical connection structure 62. The internal screen camera 6 also includes a reinforcement plate, which is located on the side of the electrical connection structure 62 facing away from the connector body 821 and is stacked with the electrical connection structure 62. Optionally, the positive projection of the connector body 821 on the reinforcement plate is located inside the reinforcement plate. In this way, the reinforcement plate and the portion of the electrical connection structure 62 stacked with the reinforcement plate form the above-mentioned support substrate 822. The support substrate 822 has a simple structure and is convenient for electrical connection and assembly.

[0105] Of course, when the second connector 82 is a connector of other structural forms, the supporting base 822 may also have other structural forms, which are not specifically limited here.

[0106] In the above embodiment, please continue to refer to Figure 4The camera body 61 has a light incident surface, and the light incident surface of the camera body 61 is also the light incident surface of the inner screen camera 6. The light incident surface of the camera body 61 is opposite to the second light opening C2 on the first screen 1.

[0107] Based on this, in some embodiments, please continue to refer to Figure 4 The circuit board 8 and the second middle frame 22 are provided with an avoidance opening K, and the camera body 61 is accommodated in the avoidance opening K. In this way, the camera body 61 can be prevented from overlapping with the circuit board 8 and the second middle frame 22 in thickness, which is beneficial to reducing the thickness of the electronic device 10 and achieving a thinner electronic device 10.

[0108] In some other embodiments, the second connector 82 may also be a connector for a flash, a connector for a rear camera 7, a connector for an external screen camera 5, or a connector for an electrical connection structure between the circuit board in the first cavity and the circuit board 8 in the second cavity. This application does not make any specific limitations on this.

[0109] The press-fit bracket 83 is located between the second connector 82 and the battery cover 4 , and is used to limit the second connector 82 to prevent the second connector 82 from being separated from the first connector 81 .

[0110] It should be noted that, in addition to being disposed between the second connector 82 and the battery cover 4 , the press-fit bracket 83 may also be disposed between other components on the circuit board 8 and the battery cover, such as between the shielding cover and the battery cover 4 .

[0111] In some embodiments, the press-fit bracket 83 may be connected to the circuit board 8. Specifically, the press-fit bracket 83 may be connected to the circuit board 8 by threaded connection, clamping, riveting, bonding, or the like.

[0112] In some embodiments, see Figure 5 , Figure 5 for Figure 4 The assembly diagram of the circuit board 8, the first connector 81, the second connector 82 and the press-fit bracket 83 in the electronic device 10 is shown. The circuit board 8 is provided with a clamping member 8a and a stopper 8b.

[0113] One end of the press-fit bracket 83 is limited by the clamping piece 8a, and the other end is clamped with the limiting piece 8b, thereby realizing the connection between the press-fit bracket 83 and the circuit board 8. The connection method is clamping, which is simple to operate and easy to disassemble.

[0114] The material of the pressed bracket 83 includes, but is not limited to, metals such as iron, copper, aluminum, stainless steel, copper alloy, aluminum alloy, magnesium-aluminum alloy, titanium alloy, etc., and may also be non-metals such as polycarbonate (PC), PC+glass fiber, ABS plastic (acrylonitrile butadiene styrene plastic), etc., and the present application does not make any specific limitation on this.

[0115] Based on any of the above embodiments, please refer to Figure 4 The electronic device 10 further includes a heat generating component 9. The heat generating component 9 is located on a side of the second surface S2 that is opposite to the first surface S1. Specifically, the heat generating component 9 can be accommodated in the second accommodation cavity.

[0116] The heat generating component 9 may be an electronic component that generates heat during operation (ie, a heat source component). For example, the heat generating component 9 may be a processor, a memory, a BTB connector, a cable socket, and the like.

[0117] Of course, in other embodiments, the heat generating component 9 may also be a heat conducting structure. For example, the heat generating component 9 may be a shielding cover or other component that is directly or indirectly thermally conductive with the heat source device, and this application does not specifically limit this.

[0118] In some embodiments, please refer to Figure 4 , the heat generating component 9 may be the second connector 82. When the second connector 82 is in operation, the current generates heat at the contact point between the second connector 82 and the first connector 81, causing the temperature of the second connector 82 to rise. At the same time, the heat of the circuit board 8 may also be conducted to the second connector 82 via the first connector 81, causing the temperature of the second connector 82 to rise.

[0119] In addition to the above, please also refer to Figure 4 and Figure 6 , Figure 6 for Figure 4 A schematic diagram of the structure of the battery cover 4 at the second surface S2 of the electronic device 10 shown in FIG. The second surface S2 of the battery cover 4 is provided with at least one groove A. Here, "at least one" means one or more. Figure 4 and Figure 6 In the illustrated embodiment, the number of the groove A is one, and this structure is simple, and the processing cost and complexity are low.

[0120] The shape of the groove A includes but is not limited to circle, oval, rectangle, triangle, prism, polygon, etc. Figure 6 The shape of the groove A is roughly rectangular for exemplary description, which cannot be regarded as a special limitation on the shape of the groove A.

[0121] See also Figure 7 , Figure 7 for Figure 4 A schematic diagram of the relative positions of the occupied area of ​​the groove A on the second surface S2 and the orthographic projection area of ​​the heat generating component 9 on the second surface S2 in the electronic device shown. Assuming that the orthographic projection area of ​​the heat generating component 9 on the second surface S2 is the third area Q3, the occupied area of ​​the groove A on the second surface S2 overlaps with the third area Q3.

[0122] It should be noted that, in this embodiment, the description of the orthographic projection of a component on a surface refers to the projection of the component on the surface in a direction perpendicular to the surface. For example, in this embodiment, the orthographic projection of the heat-generating component 9 on the second surface S2 refers to the projection of the heat-generating component 9 on the second surface S2 in a direction perpendicular to the second surface S2.

[0123] In addition, it should be noted that in the embodiments of the present application, the description of two areas overlapping each other means four implementation methods: part of one area of ​​the two areas overlaps with the entire other area, part of one area overlaps with part of the other area, the whole of one area overlaps with part of the other area, and the whole of one area overlaps with the whole of the other area.

[0124] In this way, groove A is located on the shortest heat dissipation path from the heat-generating component 9 to the battery cover 4. The side walls of groove A can play a supporting role to prevent the bottom wall of groove A from deforming toward the heat-generating component 9 under the pressure of the user holding it. This avoids the formation of a heat conduction path on the above-mentioned shortest heat dissipation path, and prevents the heat of the heat-generating component 9 from being directly transferred to the battery cover along the heat conduction path. Thereby, the possibility of local hot spots on the battery cover 4 is reduced, and the touch and comfort of the electronic device 10 are improved. At the same time, by reducing the possibility of local hot spots forming on the battery cover 4, the heat dissipation uniformity of the electronic device 10 can also be increased, and the heat dissipation efficiency can be improved. Experimental verification shows that for Figure 4 In the electronic device 10 shown, the provision of the groove A can improve the heat dissipation capacity by about 0.9 mA / ° C. compared with a solution without the groove A.

[0125] On the basis of the above embodiment, when the heat generating component 9 is the above second connector 82, since the height of the connector assembly composed of the first connector 81 and the second connector 82 protruding from the circuit board 8 is relatively high, the distance between the second connector 82 and the battery cover 4 is relatively close, and the above shortest heat dissipation path is relatively short, the heat of the second connector 82 is easily transferred to the battery cover 4. In addition, since the area occupied by the connector assembly composed of the first connector 81 and the second connector 82 on the circuit board 8 is relatively small, the heat of the second connector 82 is easily concentrated and transferred to the local area of ​​the battery cover 4, causing the local hot spot of the battery cover 4 to be hot, thereby affecting the touch and comfort of the electronic device. Based on this, the groove A can effectively prevent the heat of the second connector 82 from being transferred to the battery cover 4, effectively reducing the risk of the local hot spot of the battery cover 4, and effectively improving the uniformity of heat dissipation.

[0126] In some embodiments, please refer to Figure 7 , a part of the occupied area of ​​the groove A on the second surface S2 is located in the third area Q3, and another part is located outside the third area Q3. In this way, only a part of the battery cover or the annular ridge forming the edge of the groove A is located on the shortest heat dissipation path from the heat generating component 9 to the battery cover 4, or none of them is located on the shortest heat dissipation path. Under the pressure of the user, only a small amount of heat or almost no heat is transmitted along the shortest heat dissipation path, so the generation of local hot spots in the battery cover 4 can be effectively avoided.

[0127] Based on any of the above embodiments, optionally, please refer to Figure 4 , a first heat insulator may be provided in the groove A. The first heat insulator includes but is not limited to at least one of air, heat insulating silica gel, heat insulating gel, glass wool and polyurethane. Figure 4 In the embodiment shown, the first insulation is air.

[0128] In this way, the first thermal insulator has a low thermal conductivity, which can prevent the heat of the heat-generating component 9 from being conducted to the battery cover 4 along the shortest heat dissipation path, thereby reducing the possibility of generating local hot spots on the battery cover 4, thereby improving the heat dissipation uniformity and increasing the heat dissipation effect.

[0129] In some embodiments, the thermal conductivity of the first thermal insulator is lower than that of the battery cover 4. In this way, the first thermal insulator has a lower thermal conductivity, which can effectively prevent the heat of the heat generating component 9 from being transferred to the battery cover 4 along the shortest heat dissipation path.

[0130] Based on any of the above embodiments, the groove A may be recessed into the battery cover 4 , or may be formed outside the battery cover 4 .

[0131] In some embodiments, please refer to Figure 4 and Figure 6 The at least one groove A is formed by the second surface S2 being recessed toward the first surface S1. In this way, the groove A is recessed into the battery cover 4, thereby utilizing the internal space of the battery cover 4 to form the air insulation layer, thereby avoiding the overlap of the thickness between the air insulation layer and the battery cover 4, and facilitating the thinning of the electronic device 10.

[0132] In other embodiments, see Figure 8 , Figure 8 for Figure 1 The electronic device 10 is shown in another cross-sectional view along the AA direction. In this embodiment, the electronic device 10 further includes at least one annular ridge 42. Figure 8 In the illustrated embodiment, the number of the annular ridge 42 is one.

[0133] The shape of the annular ridge 42 can be a circular ring, an elliptical ring, a square ring, a triangular ring, a polygonal ring, etc., and the present application does not make any specific limitation on this.

[0134] The material of the annular convex ridge 42 can be non-metal such as mylar, PC, PC+glass fiber, ABS plastic, etc., or metal such as aluminum alloy, copper alloy, stainless steel, etc.

[0135] The at least one annular ridge 42 is disposed on the second surface S2 , and the at least one annular ridge 42 protrudes from the second surface S2 toward a direction away from the first surface S1 .

[0136] Specifically, the annular ridge 42 may be glued and fixed to the second surface S2, or may be integrally formed with the battery cover 4, which is not specifically limited in the present application.

[0137] A groove A is formed between an annular ridge 42 and a portion of the battery cover surrounded by the annular ridge 42 .

[0138] In this way, the groove A is disposed outside the battery cover 4 , which can prevent the groove A from affecting the structural strength of the battery cover 4 .

[0139] In some other embodiments, the groove A may further include a first groove portion and a second groove portion. The first groove portion is formed by the second surface S2 being recessed toward the first surface S1. The second groove portion is formed by a portion of the space surrounded by the annular convex ridge 42. The second groove portion is opposite to and connected to the first groove portion. In this way, under the premise that the depth of the groove A is constant, the depth of the groove A extending into the interior of the battery cover 4 is small, which can ensure the structural strength of the battery cover 4. At the same time, the distance that the annular convex ridge 42 protrudes from the second surface S2 is small, which can reduce the stacking thickness, which is conducive to achieving a thinner thickness of the electronic device 10.

[0140] It can be known that the depth of groove A affects the supporting effect of the side wall of groove A. Specifically, the greater the depth of groove A, the better the supporting effect of the side wall of groove A, and the more it can prevent the bottom wall of the groove from deforming toward the heat-generating component under the pressure of the user holding it. In addition, when groove A is recessed into the battery cover 4, the depth of groove A also affects the structural strength of the battery cover 4. Specifically, the greater the depth of groove A, the smaller the structural strength of the battery cover 4. When the side wall of groove A is formed by annular ridges 42, the depth of groove A also affects the thickness of the electronic device 10. Specifically, the greater the depth of groove A, the greater the height of the annular ridge 42 protruding from the second surface S2, the greater the superimposed thickness of groove A and the battery cover 4, the greater the thickness of the electronic device 10, and the less conducive to the thinning of the electronic device 10.

[0141] Based on this, optionally, the depth of groove A can be greater than or equal to 0.01 millimeter (mm) and less than or equal to 0.4mm. Specifically, the depth of groove A can be 0.01mm, 0.05mm, 0.08mm, 0.1mm, 0.2mm, 0.3mm or 0.4mm. When the depth of groove A is within this range, the height of the side wall of groove A is moderate, which can play an effective supporting role and prevent the bottom wall of groove A from deforming toward the heating component under the pressing action when the user holds it. At the same time, when groove A is concave into the battery cover 4, the concave depth of groove A is moderate, and the structural strength of battery cover 4 is good. When the side wall of groove A is formed by annular convex rib 42, the height of annular convex rib 42 protruding from the second surface S2 is moderate, and the stacking thickness of groove A and battery cover 4 is moderate, which is conducive to the thinning of the thickness of electronic device 10.

[0142] It can be known that the area of ​​groove A affects the heat insulation effect of the air insulation layer. Specifically, the larger the area of ​​groove A, the larger the area of ​​the air insulation layer in groove A, and the better the heat insulation effect. In addition, when groove A is recessed into the battery cover 4, the area of ​​groove A also affects the structural strength of the battery cover 4. Specifically, the larger the area of ​​groove A, the smaller the structural strength of the battery cover 4, and the battery cover 4 at groove A is easy to bend toward the heat-generating component 9 under the action of external pressing force, so that the battery cover 4 and the heat-generating component 9 are thermally conductive, resulting in a large local heat in the pressing part of the battery cover 4, affecting the feel. Among them, the external pressing force can be the gripping pressing force when holding a handheld electronic device. When the side wall of groove A is formed by an annular ridge 42, the area of ​​groove A also affects the supporting effect of the annular ridge 42 on the battery cover 4. Specifically, the larger the area of ​​the groove A is, the worse the supporting effect of the annular ridge 42 on the battery cover 4 is, and the portion of the battery cover 4 surrounded by the annular ridge 42 is easily bent toward the heat-generating component 9 under the action of external pressing force, so that the battery cover 4 and the heat-generating component 9 are thermally conductive, resulting in a large amount of local heat at the pressing part of the battery cover 4, affecting the touch of the electronic device.

[0143] Based on this, optionally, it is assumed that the orthographic projection area of ​​the heat-generating component 9 on the second surface S2 (that is, the area of ​​the third area Q3) is the first area, and the area occupied by the groove A on the second surface S2 is the second area. The second area is greater than or equal to 1 / 10 times the first area, and less than or equal to 5 times the first area. Specifically, the second area can be 1 / 10 times, 1 / 5 times, 1 times, 2 times, 3 times, 4 times or 5 times the first area. In this way, the area of ​​the groove A is moderate, which can effectively ensure the heat insulation effect and enhance the touch of the electronic device.

[0144] On the basis of any of the above embodiments, when a press-fit bracket 83 is provided between the heat generating component 9 and the battery cover 4, specifically, the orthographic projection of the heat generating component 9 on the second surface S2 overlaps with the orthographic projection of the press-fit bracket 83 on the second surface S2. On this basis, the portion of the battery cover 4 or the annular convex ridge 42 forming the edge of the groove A can be at least partially supported on the press-fit bracket 83 to form a stable support for the battery cover 4. The battery cover 4 is prevented from bending toward the heat generating component 9 under the action of an external pressing force, thereby avoiding thermal conduction between the battery cover 4 and the heat generating component 9.

[0145] Specifically, in some embodiments, assuming that the area occupied by the groove A on the second surface S2 is the first area Q1, the orthographic projection area of ​​the press-fit bracket 83 on the second surface S2 is the second area Q2. At least part of the contour line of the first area Q1 is located in the second area Q2 and is spaced apart from the contour line of the second area Q2.

[0146] In this way, the portion of the battery cover 4 or the annular ridge 42 that forms the edge of the groove A can be at least partially supported on the pressing bracket 83 to form a stable support for the battery cover 4, preventing the battery cover 4 from bending toward the heat-generating component 9 under the action of external pressing force, thereby avoiding thermal conduction between the battery cover 4 and the heat-generating component 9.

[0147] In some embodiments, see Fig. 9 , Fig. 9 for Figure 4A schematic diagram of the relative positions of the occupied area of ​​the groove A on the second surface S2 and the positive projection area of ​​the pressing bracket 83 on the second surface S2 in the electronic device shown. A portion of the contour line of the first area Q1 is located in the second area Q2 and is spaced apart from the contour line of the second area Q2, and another portion of the contour line of the first area Q1 is located outside the second area Q2 and is spaced apart from the contour line of the second area Q2. In this way, only a portion of the battery cover or annular ridge forming the edge of the groove A is located on the shortest heat dissipation path from the pressing bracket 83 to the battery cover 4. Under the pressure of the user, only a small amount of heat is transmitted along the shortest heat dissipation path from the pressing bracket 83 to the battery cover 4, so the generation of local hot spots in the battery cover 4 can be effectively avoided. In addition, it is possible to avoid the groove A and the pressing bracket 83 from enclosing a closed space to prevent the internal air from expanding due to heat, resulting in local defects in the battery cover 4.

[0148] For examples, please see Fig. 9 , the contour line of the first region Q1 includes a first segment n1 and a second segment n2. The first segment n1 is located in the second region Q2 and is spaced apart from the contour line of the second region Q2. The second segment n2 is located outside the second region Q2. Among them, the first segment n1 and the second segment n2 do not include the intersection of the contour line of the first region Q1 and the contour line of the second region Q2.

[0149] In this way, part of the battery cover 4 or the annular ridge 42 forming the first section n1 can be supported on the pressing bracket 83 to form a stable support for the battery cover 4, preventing the battery cover 4 from bending toward the heat generating component 9 under the external pressing force. At the same time, since the second section n2 is located outside the second area Q2, part of the battery cover or the annular ridge forming the second section n2 is not located on the shortest heat dissipation path from the pressing bracket 83 to the battery cover 4. Under the pressing force of the user, only a small amount of heat is transmitted along the shortest heat dissipation path from the pressing bracket 83 to the battery cover 4, so the generation of local hot spots in the battery cover 4 can be effectively avoided.

[0150] For another example, see Fig.10 , Fig.10 for Figure 4Another schematic diagram of the relative positions of the occupied area of ​​the groove A on the second surface S2 and the orthographic projection area of ​​the pressing bracket 83 on the second surface in the electronic device shown. In this embodiment, the contour line of the first area Q1 includes the first section n1 and the second section n2. The geometric center of the first area Q1 is the center O1, and the first section n1 and the second section n2 are located on opposite sides of the center O1. Moreover, the first section n1 and the second section n2 are located in the second area Q2 and are spaced apart from the contour line of the second area Q2. Among them, when the contour line of the first area Q1 intersects with the contour line of the second area Q2, the first section n1 and the second section n2 also do not include the intersection of the contour line of the first area Q1 and the contour line of the second area Q2.

[0151] In this way, the two parts of the battery cover 4 or the annular ridge 42 that respectively form the first section n1 and the second section n2 can be supported on the pressing bracket 83. At the same time, since the first section n1 and the second section n2 are located on the opposite sides of the center O1, the two parts of the battery cover 4 or the annular ridge 42 that respectively form the first section n1 and the second section n2 are also located on the opposite sides of the center O1. As a result, the supporting force of the battery cover 4 is more balanced, which can effectively prevent the battery cover 4 from bending toward the heat-generating component 9 under the action of external pressing pressure.

[0152] On the basis of the above embodiment, in the outline of the first region Q1 , other segments except the first segment n1 and the second segment n2 may be located in the second region Q2 or outside the second region Q2 .

[0153] In some embodiments, please refer to Fig.10 , the contour line of the first region Q1 includes the third segment n3 and the fourth segment n4 in addition to the first segment n1 and the second segment n2. The third segment n3 is connected between one end of the first segment n1 and one end of the second segment n2. The fourth segment n4 is connected between the other end of the first segment n1 and the other end of the second segment n2. The third segment n3 and the fourth segment n4 are both located outside the second region Q2.

[0154] In this way, part of the contour line of the first area Q1 extends outside the second area Q2. Therefore, under the premise that the area of ​​the compression bracket 83 is constant, the area of ​​the first area Q1 can be designed to be larger, which can increase the area of ​​the air insulation layer in the groove A and ensure the insulation effect.

[0155] In other embodiments, see Fig.11 , Fig.11 for Figure 4Another relative position diagram of the occupied area of ​​the groove A on the second surface S2 and the orthographic projection area of ​​the press-fit bracket 83 on the second surface in the electronic device shown. In this embodiment, the first area Q1 is located in the second area Q2, and the contour line of the first area Q1 is spaced from the contour line of the second area Q2. In other words, the first section n1, the second section n2, the third section n3 and the fourth section n4 are all located in the second area Q2.

[0156] In this way, the portion of the battery cover 4 or the annular ridge 42 forming the edge of the groove A is supported as a whole on the pressing bracket 83, which has a better supporting effect on the battery cover 4 and can effectively prevent the battery cover 4 from bending toward the heat-generating component 9 under the action of external pressing pressure, thereby effectively ensuring the heat insulation effect.

[0157] In some embodiments, the bottom surface of the groove A may be provided with at least one ridge (not shown in the figure), and the ridge may extend along a straight line, along a curve, or along a circular line, which is not specifically limited in the present application. With the help of the at least one ridge, a supporting effect can be further provided to prevent the bottom wall of the groove A from deforming toward the heat generating component 9 under the pressure of the user holding the device.

[0158] The above embodiments are exemplified by taking one groove A as an example. In other embodiments, the number of the grooves A may be multiple.

[0159] For examples, see Fig.12 , Fig.12 for Figure 4 The battery cover 4 of the electronic device 10 is another structural schematic diagram at the second surface S2. In this embodiment, there are multiple grooves A, and the multiple grooves A are arranged in an array on the second surface S2.

[0160] In this way, under the premise that the area of ​​the preset area for setting the groove A on the second surface S2 is certain, when multiple grooves A are set in the preset area, the area occupied by each groove A on the second surface S2 is small. When the groove A is recessed into the battery cover 4, compared with the solution of setting one groove A in the preset area, multiple grooves A are set, and the volume occupied by the groove A in the battery cover 4 is small, which can ensure the structural strength of the battery cover 4. When the side wall of the groove A is formed by the annular ridge 42, the number of the annular ridge 42 is large, and the supporting performance of the battery cover 4 is better, which can effectively prevent the battery cover 4 from bending toward the heat generating component 9 under the action of the pressing force.

[0161] In the above embodiment, the occupied areas of the plurality of grooves A on the second surface S2 may be equal or unequal. Fig.12 The exemplary description is given by assuming that the occupied areas of the plurality of grooves A on the second surface S2 are equal.

[0162] In some other embodiments, according to the above description, the orthographic projection area of ​​the heat generating component 9 on the second surface S2 is the third area Q3, and the geometric center of the third area Q3 is the second center. The plurality of grooves A include a first groove, and the second center is located in the occupied area of ​​the first groove on the second surface S2. Based on this, the area of ​​the first groove can be designed to be larger, and the areas of other grooves located around the first groove can be designed to be smaller, so as to ensure the uniformity of heat insulation and effectively avoid heat concentration.

[0163] The above embodiments are exemplified by taking the first thermal insulation material as air. In other embodiments, the first thermal insulation material may also be a solid thermal insulation material.

[0164] For examples, see Fig.13 , Fig.13 for Figure 1 The electronic device 10 is shown as another cross-sectional structural schematic diagram along the AA direction. In this embodiment, the first heat insulating material is a solid heat insulating material B, which includes but is not limited to heat insulating silica gel, heat insulating gel, glass wool, polyurethane and the like.

[0165] Specifically, the solid thermal insulation material B can be fixed in the groove A by means of gluing, clamping, threading, etc., or can be directly molded in the groove A. This application does not make specific limitations on this.

[0166] In this way, on the one hand, the solid heat-insulating material B forms a heat-insulating layer, which can prevent the heat of the heat-generating component 9 from being transferred to the battery cover 4, and to a certain extent reduce the possibility of generating local hot spots on the battery cover 4, thereby improving the heat dissipation uniformity and increasing the heat dissipation efficiency. On the other hand, when the groove A is recessed into the battery cover 4, the solid heat-insulating material B can compensate for the structural strength of the battery cover 4 to a certain extent, and reduce the bending deformation of the battery cover 4 at the groove A toward the heat-generating component 9 under the action of external pressing force. When the side wall of the groove A is formed by the annular convex ridge 42, the solid heat-insulating material B can enhance the structural strength of the battery cover 4, and prevent the battery cover 4 at the groove A from bending toward the heat-generating component 9 under the action of external pressing force.

[0167] On the basis of any of the above embodiments, when a press-fit bracket 83 is provided between the heat generating component 9 and the battery cover 4, in order to further improve the heat insulation effect of the heat generating component 9, in some embodiments, refer to Fig.14 , Fig.14A schematic diagram of the structure of the press-fit bracket 83 provided in some embodiments of the present application. The surface of the press-fit bracket 83 facing the battery cover 4 is defined as the third surface S3, and the surface of the press-fit bracket 83 facing the heat generating component 9 is defined as the fourth surface S4. On this basis, at least one heat-insulating through hole h may be provided on the press-fit bracket 83, and the heat-insulating through hole h passes through the third surface S3 and the fourth surface S4. The shape of the heat-insulating through hole h includes but is not limited to circular, elliptical, rectangular, triangular, prismatic, polygonal, etc. Fig.14 The shape of the heat insulating through hole h is circular for exemplary description, which cannot be regarded as a special limitation on the shape of the heat insulating through hole h.

[0168] In this way, with the help of the at least one heat-insulating through hole h, the heat of the heat-generating component 9 can be further prevented from being transferred to the battery cover 4, thereby further reducing the possibility of generating a local hot spot on the battery cover 4.

[0169] On the basis of the above embodiment, optionally, a second thermal insulator may be provided in the thermal insulation through hole h, and the thermal conductivity of the second thermal insulator is less than the thermal conductivity of the press-fit bracket 83. The second thermal insulator includes but is not limited to at least one of air, thermal insulation silica gel, thermal insulation gel, glass wool and polyurethane. The second thermal insulator has a low thermal conductivity, which can prevent the heat of the heat-generating component 9 from being transferred to the battery cover 4, thereby reducing the possibility of generating local hot spots on the battery cover 4, and can improve the heat dissipation uniformity and increase the heat dissipation efficiency.

[0170] The number of the heat-insulating through hole h can be one or more. Fig.14 In the illustrated embodiment, the number of the heat insulating through holes h is multiple, and the multiple heat insulating through holes h are arranged in an array on the press-fit bracket 83. In this way, under the premise that the area of ​​the area for setting the heat insulating through holes h on the press-fit bracket 83 is certain, compared with the solution of setting one heat insulating through hole h, when multiple heat insulating through holes h are set, the setting area of ​​each heat insulating through hole h is smaller, which can ensure the structural strength of the press-fit bracket 83.

[0171] When there are multiple thermal insulation through holes h, the multiple thermal insulation through holes h can have the same shape and size, or can have the same shape but different sizes. Fig.14 In the embodiment shown, the plurality of heat-insulating through holes h have the same shape and size, so that the heat-insulating through holes h are less difficult to process and have better appearance consistency.

[0172] In some other embodiments, the plurality of thermal insulation holes h may include a first thermal insulation hole, the orthographic projection of the first thermal insulation hole on the second surface S2 is the second projection, and the second center is located within the second projection. On this basis, the area of ​​the first thermal insulation hole may be greater than the area of ​​any other thermal insulation hole in the plurality of thermal insulation holes h. In this way, the thermal insulation uniformity of the plurality of thermal insulation holes h can be ensured, and heat concentration can be effectively avoided.

[0173] When there are multiple thermal insulation holes h, and the multiple thermal insulation holes h are arranged in an array on the third surface S3 or the fourth surface S4, if there are multiple grooves A, and the multiple grooves A are arranged in an array on the second surface S2, the multiple thermal insulation holes h can be respectively opposite to the multiple grooves A. In other words, the orthographic projections of the multiple thermal insulation holes h on the second surface S2 respectively overlap with the occupied areas of the multiple grooves A on the second surface S2.

[0174] Of course, in other embodiments, the orthographic projections of the plurality of thermal insulation holes h on the second surface S2 and the occupied areas of the plurality of grooves A on the second surface S2 may also be arranged in a staggered manner. That is to say, the geometric centers of the orthographic projections of the plurality of thermal insulation holes h on the second surface S2 do not coincide with the geometric centers of the occupied areas of the plurality of grooves A on the second surface S2, and at least part of the orthographic projections of the thermal insulation holes h on the second surface S2 are located outside the occupied areas of the grooves A on the second surface S2. In this way, the area of ​​the thermal insulation layer is larger than the sum of the areas of the plurality of thermal insulation holes h, and at the same time, the area of ​​the thermal insulation layer is also larger than the sum of the areas of the plurality of grooves A, so that the area of ​​the thermal insulation layer can be increased and the thermal insulation performance can be improved.

[0175] In some embodiments, the entire orthographic projection of the heat-insulating through hole h on the second surface S2 can be located outside the area occupied by the groove A on the second surface S2. In this way, the area of ​​the heat-insulating layer is the sum of the areas of the multiple heat-insulating through holes h and the areas of the multiple grooves A. Thus, the area of ​​the heat-insulating layer can be maximized by using the multiple grooves A and the multiple heat-insulating through holes h, thereby improving the heat-insulating performance. At the same time, the arrangement density of the grooves A on the battery cover 4 can be relatively small, and the arrangement density of the heat-insulating through holes h on the press-fit bracket 83 can be relatively small, so as to ensure the structural strength of the battery cover 4 and the press-fit bracket 83.

[0176] In some other embodiments, the third surface S3 or the fourth surface S4 may be provided with at least one heat-insulating blind hole. With the at least one heat-insulating blind hole, the heat of the heat-generating component 9 can also be prevented from being transferred to the battery cover 4, further reducing the possibility of generating local hot spots on the battery cover 4. Moreover, the heat-insulating blind hole does not penetrate the press-fit bracket 83, so the structural strength of the press-fit bracket 83 can be ensured.

[0177] In some embodiments, please refer back to Figure 4 A heat sink D is also provided between the pressed bracket 83 and the groove A. The material of the heat sink D includes, but is not limited to, copper, copper alloy, graphite, graphene and other materials with relatively good thermal conductivity. The orthographic projection area of ​​the heat sink D on the second surface S2 is larger than the area occupied by the groove A on the second surface S2. In this way, the heat of the heat generating component 9 can be conducted along the XY plane to the area outside the groove A with the help of the heat sink D, which can extend the heat conduction path, avoid heat concentration, prevent the battery cover 4 from generating local hot spots, improve the heat dissipation uniformity, and achieve better heat dissipation performance.

[0178] The above embodiments are exemplified by taking the first connector 81 and the second connector 82 as BTB connectors. In other embodiments, the first connector 81 and the second connector 82 may also be RF connectors.

[0179] For examples, see Fig.15 , Fig.15 The cross-sectional structure diagram of the electronic device 10 provided in some other embodiments of the present application is shown in FIG. 1. In this embodiment, the first connector 81 and the second connector 82 are radio frequency connectors for transmitting radio frequency signals.

[0180] Based on this, the second connector 82 can form the above-mentioned heat generating component 9, and a groove A can also be provided at a position on the second surface S2 of the battery cover 4 opposite to the second connector 82. Thus, heat concentration is avoided at a position on the battery cover 4 opposite to the RF connector, thereby improving the heat dissipation uniformity and heat dissipation capacity of the electronic device.

[0181] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0182] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An electronic device, characterized in that: include: A battery cover, the battery cover comprising a first surface and a second surface, the first surface forming a partial area of ​​an outer surface of the electronic device, the second surface being opposite to the first surface; A heat-generating component, the heat-generating component is located on a side of the second surface facing away from the first surface; wherein, The second surface is provided with at least one groove, and an occupied area of ​​the groove on the second surface overlaps with an orthographic projection area of ​​the heat-generating component on the second surface.

2. The electronic device according to claim 1, characterized in that: A first heat insulator is arranged in the groove.

3. The electronic device according to claim 2, characterized in that: The thermal conductivity of the first thermal insulator is smaller than the thermal conductivity of the battery cover.

4. The electronic device according to any one of claims 1 to 3, characterized in that: Also includes: a circuit board, wherein the circuit board is located on a side of the second surface away from the first surface; a first connector, the first connector being disposed on a surface of the circuit board facing the battery cover; The second connector is located between the first connector and the battery cover and is connected with the first connector in a mating manner. The second connector forms the heat generating component.

5. The electronic device according to any one of claims 1 to 4, characterized in that: The groove is formed by the second surface being recessed toward the first surface.

6. The electronic device according to any one of claims 1 to 4, characterized in that: Also includes: At least one annular ridge is disposed on the second surface, and an annular ridge and a portion of the space surrounded by the battery cover surrounded by the annular ridge form the groove.

7. The electronic device according to any one of claims 1 to 6, characterized in that: The orthographic projection area of ​​the heat-generating component on the second surface is a first area, and the occupied area of ​​the groove on the second surface is a second area; The second area is greater than or equal to 1 / 10 times the first area and less than or equal to 5 times the first area.

8. The electronic device according to any one of claims 1 to 7, characterized in that: The number of the grooves is multiple, and the multiple groove arrays are arranged on the second surface.

9. The electronic device according to any one of claims 1 to 8, characterized in that: The depth of the groove is greater than or equal to 0.01 mm and less than or equal to 0.4 mm.

10. The electronic device according to any one of claims 1 to 9, characterized in that: A portion of the occupied area of ​​the groove on the second surface is located within the orthographic projection area of ​​the heat-generating component on the second surface, and another portion is located outside the orthographic projection area of ​​the heat-generating component on the second surface.

11. The electronic device according to any one of claims 1 to 10, characterized in that: Also includes: A press-fit bracket is located between the heat generating component and the battery cover, and the press-fit bracket is fixedly connected to the circuit board.

12. The electronic device according to claim 11, characterized in that: The area occupied by the groove on the second surface is the first area, and the orthographic projection area of ​​the press-fit bracket on the second surface is the second area; At least a partial section of the contour line of the first region is located in the second region and is spaced apart from the contour line of the second region.

13. The electronic device according to claim 12, characterized in that: A portion of the contour line of the first region is located within the second region and spaced apart from the contour line of the second region, and another portion of the contour line of the first region is located outside the second region and spaced apart from the contour line of the second region.

14. The electronic device according to claim 12, characterized in that: The contour line of the first region includes a first segment and a second segment, the first segment and the second segment are located on opposite sides of the geometric center of the first region, and the first segment and the second segment are located in the second region and are spaced apart from the contour line of the second region.

15. The electronic device according to claim 14, characterized in that: The first area is located within the second area, and a contour line of the first area is spaced apart from a contour line of the second area.

16. The electronic device according to any one of claims 11 to 15, characterized in that: The press-fit bracket is provided with at least one heat-insulating through hole.

17. The electronic device according to claim 16, characterized in that: A second thermal insulator is disposed in the thermal insulation through hole, and the thermal conductivity of the second thermal insulator is smaller than the thermal conductivity of the pressed bracket.

18. The electronic device according to claim 16 or 17, characterized in that: There are multiple thermal insulation through holes, and multiple thermal insulation through hole arrays are arranged on the press-fit bracket.

19. The electronic device according to claim 18, characterized in that: The number of the grooves is multiple, and the multiple groove arrays are arranged on the second surface; The orthographic projections of the plurality of thermal insulation through holes on the second surface are arranged in a staggered manner with the occupied areas of the plurality of grooves on the second surface.

20. The electronic device according to any one of claims 11 to 15, characterized in that: At least one heat-insulating blind hole is provided on a surface of the press-fit bracket facing the battery cover or on a surface of the press-fit bracket facing the heat-generating component.

21. The electronic device according to any one of claims 11 to 20, characterized in that: Also includes: A heat sink is disposed between the press-fit bracket and the groove, and an orthographic projection area of ​​the heat sink on the second surface is larger than an area occupied by the groove on the second surface.

22. The electronic device according to claim 21, characterized in that: The heat sink is made of graphite or graphene.

23. The electronic device according to claim 4, characterized in that: The first connector and the second connector are BTB connectors or radio frequency connectors.

24. The electronic device according to claim 4, characterized in that: The electronic device is a foldable screen mobile phone.

25. The electronic device according to claim 24, characterized in that: The folding screen mobile phone includes an internal screen camera, and the second connector is a connector of the internal screen camera.

Images