Conductive panel and electronic device

Abstract

The present application relates to the technical field of electronic products, and discloses a conductive panel and an electronic device. The conductive panel is applied to an electronic device, a patterned structure is provided on the conductive panel, and the patterned structure passes through the conductive panel in the thickness direction of the conductive panel. When an induced current is generated in the conductive panel, the patterned structure interrupts the transmission path of the induced current, so that the impedance of a loop where the induced current is located is increased, reducing the induced current. In this way, the problem of conductive panel heating during wireless charging of an electronic device can be effectively solved, thereby ensuring the wireless charging function of the electronic device, improving the wireless charging efficiency, and reducing potential safety hazards.

Description

Conductive panels and electronic equipment Technical Field

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

[0002] Electronic devices include mobile phones, tablet computers, etc. Generally, the electronic device has a first wireless charging coil. Based on the principle of electromagnetic induction, the first wireless charging coil can wirelessly transmit power to another second wireless charging coil, thereby realizing the wireless charging function of the electronic device.

[0003] In related art, electronic devices also include a large number of conductive panels. For example, an electronic device may use a metal screen support layer to support the display screen. In this case, the screen support layer is the conductive panel. For another example, the housing of an electronic device may be made of metal. In this case, the housing is the conductive panel.

[0004] However, when an electronic device is wirelessly charged, if the conductive panel is located between the first wireless charging coil and the second wireless charging coil, an induced current will be generated in the conductive panel, causing the conductive panel to heat up. This will affect the wireless charging function of the electronic device, reduce the wireless charging efficiency, and pose certain safety risks.

[0005] Summary of the Invention

[0006] The embodiments of the present application provide a conductive panel and electronic device that can effectively solve the problem of conductive panel heating during wireless charging of electronic devices, thereby ensuring the wireless charging function of the electronic device, improving wireless charging efficiency, and reducing safety hazards. The technical solution is as follows:

[0007] In a first aspect, a conductive panel is provided. The conductive panel may be a metal panel, a carbon fiber panel, or the like. The conductive panel is applied to an electronic device. The electronic device further includes a first wireless charging coil. The first wireless charging coil may be a wireless charging transmitting coil or a wireless charging receiving coil. A second wireless charging coil may be provided on a side of the conductive panel away from the first wireless charging coil. The first wireless charging coil is used to perform wireless power transmission with the second wireless charging coil. Thus, when the first wireless charging coil and the second wireless charging coil perform wireless power transmission, the conductive panel is located between the first wireless charging coil and the second wireless charging coil. A patterned structure is also provided on the conductive panel, and the patterned structure extends through the conductive panel along the thickness direction of the conductive panel.

[0008] In an embodiment of the present application, a patterned structure is provided on the conductive panel, and the patterned structure extends through the conductive panel along its thickness. When an induced current is generated in the conductive panel, the patterned structure cuts off the transmission path of the induced current, thereby increasing the impedance of the induced current loop and reducing the induced current. This effectively solves the problem of conductive panel heating during wireless charging of electronic devices, thereby ensuring the wireless charging function of the electronic device, improving wireless charging efficiency, and reducing safety risks.

[0009] In some embodiments, when wireless power is transmitted between the first and second wireless charging coils, the projection of the first wireless charging coil onto the plane of the conductive panel, along the thickness of the conductive panel, falls within the coverage of the patterned structure. The projection of the second wireless charging coil onto the plane of the conductive panel, along the thickness of the conductive panel, also falls within the coverage of the patterned structure. In other words, when wireless power is transmitted between the first and second wireless charging coils, the patterned structure lies between the first and second wireless charging coils.

[0010] In some embodiments, the patterned structure may be further filled with insulating material.

[0011] The following describes the patterned structure in detail from four possible implementation methods.

[0012] In a first possible implementation, the patterned structure includes a second slit and at least one first slit. The first slit extends along a first direction, and the second slit extends along a second direction. The first direction and the second direction are two different directions, and both the first direction and the second direction can be the extension direction of the conductive panel. Each of the at least one first slit is connected to the second slit.

[0013] Furthermore, either end of the second slit can extend through the edge of the conductive panel. Alternatively, either end of any one of the at least one first slit can extend through the edge of the conductive panel. In this case, while ensuring that the patterned structure does not interrupt the conductive panel, the transmission path of the induced current can be extended to the greatest extent, thereby better solving the problem of conductive panel heating during wireless charging of electronic devices.

[0014] In this possible implementation, any two of the first direction, the second direction, and the thickness direction may be perpendicular to each other. In other embodiments, the angle between the first direction and the second direction may also be an acute angle or an obtuse angle.

[0015] In a second possible implementation, the patterned structure includes N first slits, where N is an integer greater than or equal to 3. No two of the N first slits are located on the same straight line. The first end of the Mth first slit among the N first slits is connected to the first end of the M+1th first slit among the N first slits. The second end of the M+1th first slit is connected to the second end of the M+2th first slit among the N first slits. Here, M is an odd number and is less than or equal to N-2, that is, M can be equal to 1, 3, 5, etc.

[0016] Furthermore, the second end of the first first slit among the N first slits extends and passes through the edge of the conductive panel.

[0017] In a third possible implementation, the patterned structure includes at least one spiral slit, wherein an end of the at least one spiral slit close to an edge of the conductive panel may extend and pass through the edge of the conductive panel.

[0018] In a fourth possible implementation, the patterned structure divides the conductive panel into a first component, a second component, and a connector. The first component has a hole. The second component is positioned within the hole of the first component and is connected to the first component via the connector. In this implementation, the number of connectors can be one or more. The first component, second component, and connector can be integrally formed.

[0019] In some other embodiments, when the patterned structure extends and penetrates the edge of the conductive panel, the conductive panel may further include a capacitor, thereby further improving the wireless charging efficiency of the electronic device. This embodiment is described in detail below from two possible implementations.

[0020] In a first possible implementation, the conductive panel has a first edge. The patterned structure extends through the first edge and divides the first edge into a first sub-edge and a second sub-edge. A first capacitor may be connected between the first sub-edge and the second sub-edge, and the capacitance of the first capacitor satisfies the following conditions:

[0021] Wherein, f is the frequency of the AC signal on the first wireless charging coil during wireless power transmission; L1 is the inductance value of the loop formed by the conductive panel and the first capacitor; C1 is the capacitance value of the loop formed by the conductive panel and the first capacitor.

[0022] In this embodiment, the loop formed by the conductive panel and the first capacitor is equivalent to a relay coil for wireless charging. The relay coil can play a relay role in the process of wireless power transmission, thereby improving the wireless charging efficiency of the electronic device.

[0023] In a second possible implementation, the conductive panel has a first edge. The patterned structure extends through and penetrates the first edge, and the patterned structure divides the first edge into a first sub-edge and a second sub-edge. The first sub-edge forms a second capacitor with other conductive components in the electronic device, and the second sub-edge forms a third capacitor with other conductive components. The capacitance values ​​of the second capacitor and the third capacitor satisfy the following conditions:

[0024] Wherein, f is the frequency of the AC signal on the first wireless charging coil during wireless power transmission; L2 is the inductance value of the loop formed by the conductive panel, the second capacitor, other conductive components, and the third capacitor; C2 is the capacitance value of the loop formed by the conductive panel, the second capacitor, other conductive components, and the third capacitor.

[0025] In this embodiment, the loop composed of the conductive panel, the second capacitor, other conductive components, and the third capacitor is equivalent to a relay coil for wireless charging. The relay coil can act as a relay during wireless power transmission, thereby improving the wireless charging efficiency of electronic devices.

[0026] In a second aspect, an electronic device is further provided, comprising a first wireless charging coil and a conductive panel as described in any one of the first aspects.

[0027] In some embodiments, the electronic device further comprises a display screen. The display screen and the conductive panel are stacked along the thickness direction of the electronic device. In this way, the conductive panel can be used to support the display screen.

[0028] Furthermore, the electronic device may be a foldable screen device. In this case, the display screen of the electronic device includes a first display area and a second display area adjacent to each other. The first display area and the second display area are both capable of bending toward the side where the conductive panel is located.

[0029] In some embodiments, the electronic device is a terminal device. In this case, the electronic device further includes a display screen. The conductive panel can be a back cover of the electronic device, and the back cover is arranged opposite to the display screen.

[0030] In some embodiments, the electronic device is a wireless charging device, and the conductive panel is a housing of the wireless charging device.

[0031] It can be understood that the beneficial effects of the second aspect mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] FIG1 is a schematic diagram of the appearance of a first terminal device in the related art;

[0033] FIG2 is a schematic diagram of the appearance of a second terminal device in the related art;

[0034] FIG3 is a schematic diagram of the appearance of a third terminal device in the related art;

[0035] FIG4 is a schematic diagram of the appearance of a fourth terminal device in the related art;

[0036] FIG5 is a schematic diagram of the appearance of a fifth terminal device in the related art;

[0037] FIG6 is a schematic diagram of the internal structure of a first terminal device in the related art;

[0038] FIG7 is a schematic diagram of the internal structure of a second terminal device in the related art;

[0039] FIG8 is a schematic diagram of a charging scenario of a first terminal device in the related art;

[0040] FIG9 is a schematic structural diagram of a terminal device in the related art when performing wireless charging;

[0041] FIG10 is a schematic diagram of the appearance of a sixth terminal device in the related art;

[0042] FIG11 is a schematic diagram of the appearance of a wireless charging device in the related art;

[0043] FIG12 is a schematic diagram of a charging scenario of a second terminal device in the related art;

[0044] FIG13 is a schematic diagram of the electromagnetic induction principle in the related art;

[0045] FIG14 is a schematic diagram showing the position of a first conductive panel provided in an embodiment of the present application;

[0046] FIG15 is a schematic structural diagram of a first conductive panel provided in an embodiment of the present application;

[0047] FIG16 is a schematic structural diagram of a first wireless charging coil and a second wireless charging coil provided in an embodiment of the present application;

[0048] FIG17 is a schematic diagram of the position of an electromagnetic induction magnetic field provided in an embodiment of the present application;

[0049] FIG18 is a schematic diagram showing the position of a second conductive panel provided in an embodiment of the present application;

[0050] FIG19 is a schematic structural diagram of a conductive panel without a patterned structure;

[0051] FIG20 is a directional diagram of the induced current of the first conductive panel provided in an embodiment of the present application;

[0052] FIG21 is a schematic structural diagram of a second conductive panel provided in an embodiment of the present application;

[0053] FIG22 is a directional diagram of the induced current of the second conductive panel provided in an embodiment of the present application;

[0054] FIG23 is a schematic diagram of a three-dimensional structure of a conductive panel provided in an embodiment of the present application;

[0055] FIG24 is a schematic diagram showing the position of a third conductive panel provided in an embodiment of the present application;

[0056] FIG25 is a schematic structural diagram of a third conductive panel provided in an embodiment of the present application;

[0057] FIG26 is a schematic structural diagram of a fourth conductive panel provided in an embodiment of the present application;

[0058] FIG27 is a schematic structural diagram of a fifth conductive panel provided in an embodiment of the present application;

[0059] FIG28 is a schematic structural diagram of a sixth conductive panel provided in an embodiment of the present application;

[0060] FIG29 is a schematic structural diagram of a seventh conductive panel provided in an embodiment of the present application;

[0061] FIG30 is a schematic structural diagram of an eighth conductive panel provided in an embodiment of the present application;

[0062] FIG31 is a schematic structural diagram of a ninth conductive panel provided in an embodiment of the present application;

[0063] FIG32 is a schematic structural diagram of a tenth conductive panel provided in an embodiment of the present application;

[0064] FIG33 is a schematic structural diagram of an eleventh conductive panel provided in an embodiment of the present application;

[0065] FIG34 is a schematic structural diagram of a twelfth conductive panel provided in an embodiment of the present application;

[0066] FIG35 is a schematic structural diagram of a thirteenth conductive panel provided in an embodiment of the present application;

[0067] FIG36 is a schematic structural diagram of a fourteenth conductive panel provided in an embodiment of the present application;

[0068] FIG37 is a schematic structural diagram of a fifteenth conductive panel provided in an embodiment of the present application;

[0069] FIG38 is a schematic structural diagram of a sixteenth conductive panel provided in an embodiment of the present application;

[0070] FIG39 is a schematic structural diagram of a seventeenth conductive panel provided in an embodiment of the present application;

[0071] FIG40 is a schematic structural diagram of an eighteenth conductive panel provided in an embodiment of the present application;

[0072] FIG41 is a schematic structural diagram of a nineteenth conductive panel provided in an embodiment of the present application;

[0073] FIG42 is a schematic structural diagram of the twentieth conductive panel provided in an embodiment of the present application;

[0074] FIG43 is a schematic structural diagram of a twenty-first conductive panel provided in an embodiment of the present application;

[0075] FIG44 is a schematic structural diagram of a twenty-second conductive panel provided in an embodiment of the present application;

[0076] FIG45 is a directional diagram of the induced current of the third conductive panel provided in an embodiment of the present application;

[0077] FIG46 is a directional diagram of the induced current of the fourth conductive panel provided in an embodiment of the present application;

[0078] FIG47 is a schematic structural diagram of a twenty-third conductive panel provided in an embodiment of the present application;

[0079] FIG48 is a schematic structural diagram of a twenty-fourth conductive panel provided in an embodiment of the present application;

[0080] Figure 49 is a curve showing the relationship between temperature and time of a screen support layer made of different materials during wireless charging provided in an embodiment of the present application.

[0081] The meanings of the figures in the related art are as follows:

[0082] 10. Terminal device; 110. Display screen; 112. First display area; 114. Second display area; 120. First supporting layer; 122. First sub-support layer; 124. Second sub-support layer; 130. Second supporting layer; 132. Third sub-support layer; 134. Fourth sub-support layer; 140. Wireless charging receiving coil; 150. Middle frame; 160. Other structural components; 170. Back cover; 20. Wireless charging device; 210. Wireless charging transmitting coil; 220. Magnetic conductive material; 230. Housing; 30. Principle of electromagnetic induction; 32. Coil; 34. Electromagnetic induction magnetic field; 36. Conductor; 38. Induced current;

[0083] The meanings of the figures in the embodiments of the present application are as follows:

[0084] 40. First electronic device; 42. Conductive panel; 420. Patterned structure; 4202. First slit; 4204. Second slit; 422. First component; 424. Second component; 426. Connector; 421. First edge; 4211. First sub-edge; 4212. Second sub-edge; 423. Second edge; 4231. Third sub-edge; 4232. Fourth sub-edge; 44. First wireless charging coil; 46. Other conductive devices; 50. Second electronic device; 52. Second wireless charging coil; 60. Induced magnetic field. DETAILED DESCRIPTION

[0085] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0086] It should be understood that the “multiple” mentioned in this application refers to two or more. In the description of this application, unless otherwise specified, “ / ” means or, for example, A / B can mean A or B; “and / or” in this article is merely a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in order to facilitate the clear description of the technical solution of this application, words such as “first” and “second” are used to distinguish between identical or similar items with basically the same functions and effects. Those skilled in the art can understand that words such as “first” and “second” do not limit the quantity and execution order, and words such as “first” and “second” do not necessarily limit them to be different.

[0087] Before explaining the conductive panel provided in the embodiment of the present application in detail, the application scenarios and related technologies of the conductive panel are first explained.

[0088] Wireless power transmission (WPT), also known as wireless power transmission, involves a power transmitter converting electrical energy into another form of relay energy. After transmitting the energy over a certain distance, a power receiver converts the relay energy back into electrical energy, thus achieving wireless power transmission. Depending on the form of relay energy used during the transmission process, wireless power transmission can be categorized as magnetic field coupling, electric field coupling, and electromagnetic field coupling.

[0089] An electronic device refers to an electrical device composed of microelectronic devices. Microelectronic devices can be, for example, transistors and electron tubes. Electronic devices include terminal devices and wireless charging devices. With the development of wireless power transmission technology, more and more electronic devices are capable of wireless power transmission. For example, wireless charging devices can wirelessly charge terminal devices. In this process, the wireless charging device acts as the power transmitter and can be, for example, a wireless charger, a mouse pad with integrated wireless charging functionality, a desk, coffee table, sofa, mobile phone, tablet computer, etc.; the terminal device acts as the power receiver and can be, for example, a mobile phone, tablet computer, headphones, bracelet, watch, stylus, car, etc. Wireless charging technology is a magnetic field-coupled wireless power transmission technology. That is, when a wireless charging device wirelessly charges a terminal device, it converts alternating current into an alternating magnetic field, while the terminal device converts the alternating magnetic field into alternating current.

[0090] In order to perform wireless charging, a first wireless charging coil is generally provided in the electronic device. Based on the principle of electromagnetic induction, the first wireless charging coil can perform wireless power transmission with another second wireless charging coil, thereby realizing the wireless charging function of the electronic device. It can be understood that when the electronic device is a terminal device (i.e., a power receiving device), the first wireless charging coil is a wireless charging receiving coil, and the second wireless charging coil is a wireless charging transmitting coil in the wireless charging device (i.e., a power transmitting device). Conversely, when the electronic device is a wireless charging device, the first wireless charging coil is a wireless charging transmitting coil, and the second wireless charging coil is a wireless charging receiving coil in the terminal device.

[0091] In related art, electronic devices also include a large number of conductive panels. The conductive panels may be made of metal or other conductive materials. The other conductive materials here may be, for example, graphite, carbon fiber, etc.

[0092] The following describes the application of conductive panels in electronic devices from two perspectives: the electronic device is a terminal device, and the electronic device is a wireless charging device.

[0093] 1. Electronic equipment is a terminal device.

[0094] A terminal device is an electronic device with a display screen that can display images. Generally, terminal devices include foldable screen devices and non-foldable screen devices.

[0095] (1) The terminal device is a foldable screen device.

[0096] Figure 1 is a schematic diagram of the appearance of a terminal device 10 in the related art. The terminal device 10 shown in the figure is a foldable screen device. As shown in Figure 1, the terminal device 10 has a foldable display screen 110. Display screen 110 includes a first display area 112 and a second display area 114. The first display area 112 and the second display area 114 are integrally formed and can be folded along the boundary between them. Figure 2 is a schematic diagram of the appearance of another terminal device 10 in the related art, and Figure 2 shows the appearance of the terminal device 10 shown in Figure 1 in a fully unfolded state. For ease of understanding, directions X0, Y0, and Z0 are defined herein to describe the terminal device 10. Directions X0 and Y0 are the directions in which the display screen 110 extends when the terminal device 10 is in the fully unfolded state. Direction Z0 is the thickness direction of the display screen 110 when the terminal device 10 is in the fully unfolded state. Directions X0, Y0, and Z0 are perpendicular to each other. It should be understood that the viewing direction of Figure 2 is the opposite direction of direction Z0. Figure 3 is a schematic diagram of the appearance of another terminal device 10 in the related art, and Figure 3 shows the appearance of the terminal device 10 shown in Figure 1 when it is in a fully expanded state. Different from Figure 2, the viewing direction of Figure 3 is direction Y0. In Figure 3, the dotted line with an arrow is also used to show the folding direction of the first display area 112 and the second display area 114 when the terminal device 10 is folded. Generally, when the terminal device 10 is in a fully expanded state, the first display area 112 and the second display area 114 display images at the same time, and the first display area 112 and the second display area 114 can display different images respectively, or can display one image in collaboration.

[0097] Figures 4 and 5 are schematic diagrams of the appearance of two terminal devices 10 in the related art. Figure 4 shows the appearance of the terminal device 10 shown in Figure 1 when it is in a folded state, and the viewing direction is direction Z0. Figure 5 shows the appearance of the terminal device 10 shown in Figure 1 when it is in a folded state, and the viewing direction is the opposite direction of direction Z0. Generally, when the terminal device 10 is in a folded state, only the first display area 112 can display an image, or only the second display area 114 can display an image, or the first display area 112 and the second display area 114 can display the same or different images at the same time. It can be understood that compared with the fully expanded state shown in Figures 2 and 3, and the folded state shown in Figures 4 and 5, the terminal device 10 shown in Figure 1 is in an incompletely expanded state.

[0098] Figures 6 and 7 are schematic diagrams of the internal structures of two terminal devices 10 in the related art, and illustrate the internal structure of the terminal device 10 shown in Figure 1 when it is in a fully expanded state. Figures 6 and 7 are viewed from different directions. As shown in Figures 6 and 7, the terminal device 10 may include a display screen 110, a first support layer 120, a second support layer 130, a wireless charging receiving coil 140, a midframe 150, and other structural components 160.

[0099] The first supporting layer 120 is a screen supporting layer. Generally, along the thickness direction of the terminal device 10, the first supporting layer 120 is stacked with the display screen 110 and is used to support the display screen 110, so that the display screen 110 has higher strength. Since metal materials and carbon fiber materials have higher strength, the material of the first supporting layer 120 is generally metal or carbon fiber. In this case, the first supporting layer 120 is a conductive panel. The first supporting layer 120 includes a first sub-support layer 122 and a second sub-support layer 124. The first sub-support layer 122 is used to support the first display area 112, and the second sub-support layer 124 is used to support the second display area 114. The first sub-support layer 122 and the second sub-support layer 124 are connected together. Generally, the first sub-support layer 122 and the second sub-support layer 124 are an integrally molded structure.

[0100] The second supporting layer 130 also serves as the screen support layer. Along the thickness direction of the terminal device 10, the second supporting layer 130 can be stacked with the first supporting layer 120 and the display screen 110 and used to support the display screen 110. The second supporting layer 130 is generally made of metal. In this case, the second supporting layer 130 is also a conductive panel. The second supporting layer 130 includes a third sub-support layer 132 and a fourth sub-support layer 134. The third sub-support layer 132 is used to support the first display area 112, and the fourth sub-support layer 134 is used to support the second display area 114. The third sub-support layer 132 and the fourth sub-support layer 134 are connected together. Generally, the third sub-support layer 132 and the fourth sub-support layer 134 are integrally formed.

[0101] It is understandable that the terminal device 10 may include only one of the first supporting layer 120 and the second supporting layer 130. Generally, when the terminal device 10 includes the first supporting layer 120 and the second supporting layer 130, the material of one of the first supporting layer 120 and the second supporting layer 130 is metal, and the material of the other of the first supporting layer 120 and the second supporting layer 130 can be metal or a non-metallic material such as carbon fiber, foam or a composite material.

[0102] The wireless charging receiving coil 140 is used to receive wireless power and is generally a multi-turn planar coil. The wireless charging receiving coil 140 is located on the side of the screen support layer (including the first support layer 120 and the second support layer 130) away from the display screen 110. It is understandable that the wireless charging receiving coil 140 will not cross the dividing line between the first display area 112 and the second display area 114. In other words, the wireless charging receiving coil 140 can be located on the side of the first sub-support layer 122 and the third sub-support layer 132 away from the first display area 112; or as shown in Figures 6 and 7, the wireless charging receiving coil 140 can also be located on the side of the second sub-support layer 124 and the fourth sub-support layer 134 away from the second display area 114. In the following description, the wireless charging receiving coil 140 is located on the side of the second sub-support layer 124 and the fourth sub-support layer 134 away from the second display area 114 as an example.

[0103] The middle frame 150 is used to fix the electronic device module in the terminal device 10. That is to say, the electronic device module in the terminal device 10 can be fixed on the middle frame 150. The electronic device module here includes a main board, a small board and an energy storage unit. Among them, the main board and the small board both include a printed circuit board (PCB) and electronic devices mounted on the printed circuit board. For example, the electronic devices in the main board include but are not limited to a central processing unit (CPU), a graphics processing unit (GPU), a baseband processor, a power management unit (PMU), resistors, capacitors, inductors, sensors, etc. The electronic devices in the small board include but are not limited to microphones, speakers, resistors, capacitors, inductors, sensors, etc. The energy storage unit includes a battery cell and a battery protection board connected to the battery cell.

[0104] Other structural components 160 refer to structural components that may be used in the terminal device 10. For example, the other structural components 160 may include a frame of the terminal device 10, a bracket in the terminal device 10 for protecting a mainboard, and the like.

[0105] Figure 8 is a schematic diagram of a charging scenario of a terminal device 10 in the related art. As shown in Figure 8, the terminal device 10 may be in a folded state and placed on the wireless charging device 20 for wireless charging. Generally, the first display area 112 and the second display area 114 can be bent toward the side where the screen support layer (including the first support layer 120 and the second support layer 130) is located. When the wireless charging receiving coil 140 is located on the side where the second sub-support layer 124 and the fourth sub-support layer 134 are away from the second display area 114, when the terminal device 10 is wirelessly charged, the first display area 112 is away from the wireless charging device 20, so that the wireless charging receiving coil 140 is as close as possible to the wireless charging transmitting coil 210. In this case, the user can still use the first display area 112 when the terminal device 10 is wirelessly charged.

[0106] FIG9 is a schematic diagram of the structure of a terminal device 10 in the related art when performing wireless charging, and the structure shown in FIG9 corresponds to the charging scenario shown in FIG8 . In the embodiment shown in FIG9 , only the first support layer 120 (including the first sub-support layer 122 and the second sub-support layer 124) is shown, and the second support layer 130 is not shown. As shown in FIG9 , since the wireless charging receiving coil 140 is located on the side of the second sub-support layer 124 away from the second display area 114, when the terminal device 10 is in a folded state and placed on the wireless charging device 20 for wireless charging, the second sub-support layer 124 will be located between the wireless charging receiving coil 140 and the wireless charging transmitting coil 210.

[0107] As shown in Figure 9, in the wireless charging device 20, a magnetic conductive material 220 may be provided on the side of the wireless charging transmitting coil 210 away from the wireless charging receiving coil 140. The magnetic conductive material 220 is used to adjust the direction of the magnetic field generated by the wireless charging transmitting coil 210, thereby improving wireless charging efficiency. It is understood that the same magnetic conductive material may also be provided on the side of the wireless charging receiving coil 140 away from the wireless charging transmitting coil 210, and this will not be described in detail here.

[0108] (2) The terminal device 10 is a non-folding screen device.

[0109] Figure 10 is a schematic diagram of the appearance of another terminal device 10 in the related art. The terminal device 10 shown in the figure is a non-folding screen device. As shown in Figure 10, the terminal device 10 has a back cover 170. The back cover 170 is arranged opposite to the display screen of the terminal device 10. The material of the back cover 170 may be metal, glass, plastic, ceramic, etc. It is understandable that the terminal device 10 also has a wireless charging receiving coil inside, and the wireless charging receiving coil is generally arranged close to the back cover 170. Figure 11 is a schematic diagram of the appearance of a wireless charging device 20 in the related art. As shown in Figure 11, the wireless charging device 20 has a shell 230. The material of the shell 230 may be metal, glass, plastic, ceramic, etc. It is understandable that a wireless charging transmitting coil is arranged in the shell 230.

[0110] Figure 12 is a schematic diagram of a charging scenario of another terminal device 10 in the related art. As shown in Figure 12, the terminal device 10 shown in Figure 10 can be placed on the wireless charging device 20 shown in Figure 11 for wireless charging. Generally, when a non-folding screen device is wirelessly charged, the housing 230 of the terminal device 10 is close to the wireless charging device 20, and the display screen 110 is away from the wireless charging device 20. In this case, the user can still use the display screen 110 when the terminal device 10 is wirelessly charged. In this embodiment, if the material of the back cover 170 of the terminal device 10 is metal, then when the terminal device 10 is wirelessly charged, the metal back cover 170 will be located between the wireless charging receiving coil and the wireless charging transmitting coil.

[0111] 2. The electronic device is a wireless charging device 20.

[0112] The wireless charging device 20 refers to an electronic device that can convert alternating current into an alternating magnetic field, thereby wirelessly charging the terminal device 10. The appearance of the wireless charging device 20 can be as shown in Figure 8 or Figure 11, and will not be repeated here. As mentioned above, the wireless charging device 20 has a shell 230. The material of the shell 230 can be metal, glass, plastic, ceramic, etc. A wireless charging transmitting coil 210 is arranged in the shell 230. Therefore, if the material of the shell 230 is metal, when the wireless charging device 20 wirelessly charges the terminal device 10, the metal shell 230 will be located between the wireless charging receiving coil 140 and the wireless charging transmitting coil 210.

[0113] Figure 13 is a schematic diagram illustrating the principle of electromagnetic induction 30 in related art. As shown in Figure 13 , when an alternating current flows through a coil 32, an electromagnetic induction magnetic field 34 is generated around the coil 32. This electromagnetic induction magnetic field 34 is also an alternating magnetic field. In this case, an induced current 38 is generated within a conductor 36 within the electromagnetic induction magnetic field 34, causing the conductor 36 to generate heat. The power expression for the heat generated by the conductor 36 is:

[0114] P=I 2 R. Wherein, P is the power generated by the heat generated by the conductor 36, I is the value of the induced current 38, and R is the impedance of the loop in which the induced current 38 is located.

[0115] It can be seen that in the application scenario of the aforementioned conductive panel, when the wireless charging device 20 wirelessly charges the terminal device 10, if the conductive panel (including the above-mentioned second sub-support layer 124, the fourth sub-support layer 134, the back cover 170 of the terminal device 10, and the shell 230 of the wireless charging device 20) is between the wireless charging transmitting coil 210 and the wireless charging receiving coil 140, then an induced current will be generated in the conductive panel, causing the conductive panel to heat up, which will affect the wireless charging function of the electronic device, reduce the wireless charging efficiency, and have certain safety hazards.

[0116] Based on this, embodiments of the present application provide a conductive panel and electronic device. This conductive panel can effectively solve the problem of conductive panel heating during wireless charging of electronic devices, thereby ensuring the wireless charging function of the electronic device, improving wireless charging efficiency, and reducing safety hazards.

[0117] The conductive panel provided in the embodiment of the present application is explained in detail below.

[0118] Embodiments of the present application provide a conductive panel. The conductive panel can be a metal panel, a carbon fiber panel, a graphite panel, or the like. The conductive panel is applied to a first electronic device, for example, as a screen support layer or back cover of a terminal device, or as a housing for a wireless charging device.

[0119] Specifically, the first electronic device also includes a first wireless charging coil. Wireless power transmission can be performed between the first electronic device and the second electronic device. For example, the first electronic device can be a wireless charging device or a terminal device; the second electronic device can be the other of the wireless charging device and the terminal device. The second electronic device includes a second wireless charging coil. The second wireless charging coil is located on a side of the conductive panel away from the first wireless charging coil. Here, the first wireless charging coil is used to perform wireless power transmission with the second wireless charging coil. It is understandable that when the first electronic device is a terminal device and the second electronic device is a wireless charging device, the first wireless charging coil is a wireless charging receiving coil and the second wireless charging coil is a wireless charging transmitting coil. Conversely, when the first electronic device is a wireless charging device and the second electronic device is a terminal device, the first wireless charging coil is a wireless charging transmitting coil and the second wireless charging coil is a wireless charging receiving coil.

[0120] Figure 14 is a schematic diagram illustrating the position of a conductive panel 42 according to an embodiment of the present application. As shown in Figure 14 , when wireless power is transmitted between a first electronic device 40 and a second electronic device 50, specifically when wireless power is transmitted between a first wireless charging coil 44 and a second wireless charging coil 52, the conductive panel 42 is positioned between the first wireless charging coil 44 and the second wireless charging coil 52. Figure 15 is a schematic diagram illustrating the structure of a conductive panel 42 according to an embodiment of the present application. As shown in Figure 15 , in this embodiment of the present application, a patterned structure 420 is provided on the conductive panel 42.

[0121] For ease of understanding, a first direction X, a second direction Y, and a third direction Z are defined herein to describe the conductive panel 42. The first direction X and the second direction Y are the extension directions of the conductive panel 42, and the third direction Z is the thickness direction of the conductive panel 42. The first direction X, the second direction Y, and the third direction Z are perpendicular to each other. It is understandable that when the conductive panel 42 is applied to the terminal device 10 shown in Figures 1 to 7, for example, as a screen support layer or back cover 170 of the terminal device 10, the first direction X is the same direction as the direction X0, the second direction Y is the same direction as the direction Y0, and the third direction Z is the same direction as the direction Z0. In an embodiment of the present application, as shown in Figure 15, along the third direction Z, the patterned structure 420 penetrates the conductive panel 42.

[0122] The principle by which the conductive panel 42 can reduce its own heat generation power will be described below with reference to the accompanying drawings.

[0123] Figure 16 is a schematic diagram of the structure of a first wireless charging coil 44 and a second wireless charging coil 52 provided in an embodiment of the present application. As shown in Figure 16, the first wireless charging coil 44 and the second wireless charging coil 52 are generally multi-turn planar coils. Based on this, when the first wireless charging coil 44 and the second wireless charging coil 52 are transmitting power, the position of the generated induced magnetic field 60 can be as shown in Figure 17. The induced magnetic field 60 is an alternating magnetic field. As shown in Figure 18, when the first wireless charging coil 44 and the second wireless charging coil 52 are transmitting power, the conductive panel 42 is located between the first wireless charging coil 44 and the second wireless charging coil 52.

[0124] FIG19 is a schematic diagram of the structure of the conductive panel 42 without the patterned structure 420. When the conductive panel 42 shown in FIG19 is located in the position shown in FIG18, the direction of the induced current in the conductive panel 42 is shown in FIG20. Based on Lenz's law, the direction of the induced current in the conductive panel 42 is opposite to the direction of the induced current in the first wireless charging coil 44 and the second wireless charging coil 52. In this case, on the one hand, the conductive panel 42 will block the transmission of the induced magnetic field 60, affecting the wireless charging power of the first electronic device 40 and reducing the wireless charging efficiency; on the other hand, the induced current in the conductive panel 42 will cause the conductive panel 42 to heat up, posing a certain safety hazard.

[0125] FIG21 is a schematic structural diagram of another conductive panel 42 provided in an embodiment of the present application. Compared to the conductive panel 42 shown in FIG19 , the conductive panel 42 shown in FIG21 differs in that a patterned structure 420 in the form of a slit is provided on the conductive panel 42 in the third direction Z. When the conductive panel 42 shown in FIG21 is located in the position shown in FIG18 , the direction diagram of the induced current in the conductive panel 42 is shown in FIG22 . In the embodiments shown in FIG20 and FIG22 , the darker the area, the higher the temperature of the conductive panel 42, and the lighter the area, the lower the temperature of the conductive panel 42. Comparing FIG22 with FIG20 , it can be seen that the patterned structure 420 can cut off the path of the induced current, thereby increasing the impedance of the loop in which the induced current is located and reducing the magnitude of the induced current. It can be understood that in this process, although the impedance of the loop in which the induced current is located increases, as previously described, the expression for the induced current is P=I 2 R, so as the induced current decreases, the heating power of the conductive panel 42 is also reduced. In this way, the problem of heating of the conductive panel 42 when the first electronic device 40 is wirelessly charged can be effectively solved, thereby ensuring the wireless charging function of the first electronic device 40, improving the wireless charging efficiency, and reducing safety hazards.

[0126] In some embodiments, as shown in FIG. 14 and FIG. 18 , when the first wireless charging coil 44 and the second wireless charging coil 52 perform wireless power transmission, the conductive panel 42 is located between the first wireless charging coil 44 and the second wireless charging coil 52 , and the first wireless charging coil 44 and the second wireless charging coil 52 also extend along the first direction X and the second direction Y.

[0127] Figure 23 is a schematic diagram of the three-dimensional structure of a conductive panel 42 provided in an embodiment of the present application, and Figure 24 is a schematic diagram of the position of another conductive panel 42 provided in an embodiment of the present application. As shown in Figures 23 and 24, when the first wireless charging coil 44 and the second wireless charging coil 52 are performing wireless power transmission, the patterned structure 420 provided on the conductive panel 42 is located between the first wireless charging coil 44 and the second wireless charging coil 52. In other words, along the third direction Z, the projection of the first wireless charging coil 44 on the plane of the conductive panel 42 is located within the coverage area of ​​the patterned structure 420. Simultaneously, along the third direction Z, the projection of the second wireless charging coil 52 on the plane of the conductive panel 42 is also located within the coverage area of ​​the patterned structure 420.

[0128] As will be appreciated, as previously mentioned, the conductive panel 42 is used in electronic devices as a screen support layer or back cover, or as a housing for wireless charging devices. In these scenarios, the conductive panel 42 is required to have high strength. Therefore, to prevent the patterned structure 420 from reducing the strength of the conductive panel 42, in some embodiments, the patterned structure 420 may be filled with an insulating material.

[0129] The patterned structure 420 is described in detail below from six possible implementations with reference to the accompanying drawings.

[0130] 1. The first possible implementation method.

[0131] FIG25 is a schematic diagram of the structure of another conductive panel 42 provided in an embodiment of the present application. As shown in FIG15 and FIG25 , in some embodiments, the patterned structure 420 includes at least one first slit 4202 and one second slit 4204. Here, a slit refers to a slit having a narrow width and a long length. The first slit 4202 refers to a slit extending along the first direction X. The patterned structure 420 includes at least one first slit 4202. For example, the patterned structure 420 may include one, two, three, five, or more first slits 4202. In the embodiment shown in FIG15 , the patterned structure 420 includes 15 first slits 4202; in the embodiment shown in FIG25 , the patterned structure 420 includes nine first slits 4202.

[0132] Generally, to ensure high uniformity of strength at all locations of the conductive panel 42, when the patterned structure 420 includes a plurality of first slits 4202, the widths of the plurality of first slits 4202 are equal to one another, the lengths of the plurality of first slits 4202 can also be equal to one another, and the spacing between two adjacent first slits 4202 in the plurality of first slits 4202 can also be set to be equal. The term "plurality" herein refers to an integer of two or greater than two.

[0133] The second slit 4204 is a slit extending along the second direction Y. The patterned structure 420 includes one second slit 4204, and each of the at least one first slit 4202 is connected to the second slit 4204. In other words, all first slits 4202 are connected to the second slit 4204, so that all first slits 4202 and second slits 4204 form a complete patterned structure 420.

[0134] In the embodiment shown in FIG25 , the path of the induced current is indicated by a dashed line. It is understood that the patterned structure 420 reduces the induced current by, on the one hand, interrupting the transmission path of the induced current and increasing the impedance of the loop in which the induced current resides. Therefore, the longer the perimeter of the patterned structure 420, the smaller the induced current in the conductive panel 42. On the other hand, the absence of conductive material in the area where the patterned structure 420 is located prevents the induced magnetic field 60 from generating an induced current. Therefore, the larger the area of ​​the patterned structure 420, the smaller the induced current in the conductive panel 42.

[0135] Based on the above-mentioned "principle of reducing induced current by the patterned structure 420", it can be known that: when the number of first slits 4202 is the same, all the first slits 4202 are connected to the second slits 4204, so that the perimeter of the patterned structure 420 can be maximized, thereby minimizing the induced current in the conductive panel 42. In addition, based on the above-mentioned "principle of reducing induced current by the patterned structure 420", the following extended embodiments can be made for the patterned structure 420 of the conductive panel 42: (1) The number of first slits 4202 can be appropriately increased to increase the perimeter and area of ​​the patterned structure 420, thereby reducing the induced current. (2) The edge of the first slit 4202 can be set as a curve or a zigzag line to increase the perimeter of the patterned structure 420, thereby reducing the induced current. (3) The length of the second slit 4204 can be extended to increase the perimeter of the patterned structure 420. For example, in the embodiment shown in Figure 26, either end of the second slit 4204 extends and passes through the edge of the conductive panel 42. In this case, while ensuring that the patterned structure 420 does not cut off the conductive panel 42, the transmission path of the induced current can be extended to the greatest extent, thereby better solving the problem of heating of the conductive panel 42 during wireless charging of the first electronic device 40. In other embodiments, any end of any first slit 4202 can extend and pass through the edge of the conductive panel 42, which will not be further described.

[0136] In some specific embodiments, software was used to simulate the scenario of "wireless power transmission between the first wireless charging coil 44 and the second wireless charging coil 52" and it was found that: when the conductive panel 42 shown in Figure 26 was located between the first wireless charging coil 44 and the second wireless charging coil 52, the efficiency of wireless power transmission was approximately 88.8%; when the conductive panel 42 shown in Figure 27 was located between the first wireless charging coil 44 and the second wireless charging coil 52, the efficiency of wireless power transmission was approximately 71.7%; when the conductive panel 42 shown in Figure 28 was located between the first wireless charging coil 44 and the second wireless charging coil 52, the efficiency of wireless power transmission was approximately 72.15%.

[0137] The patterned structure 420 of the conductive panel 42 shown in FIG26 includes 18 first slits 4202, while the patterned structure 420 of the conductive panel 42 shown in FIG27 includes 10 first slits 4202. Furthermore, the width W1 of the first slits 4202 in FIG26 is equal to the width W2 of the first slits 4202 in FIG27, and the length L1 of the first slits 4202 in FIG26 is equal to the length L2 of the first slits 4202 in FIG27. Comparing FIG26 and FIG27, it can be seen that the perimeter of the patterned structure 420 of the conductive panel 42 shown in FIG26 is greater than the perimeter of the patterned structure 420 of the conductive panel 42 shown in FIG27, and the area of ​​the patterned structure 420 of the conductive panel 42 shown in FIG26 is greater than the area of ​​the patterned structure 420 of the conductive panel 42 shown in FIG27. In this case, the induced current in the conductive panel 42 shown in FIG. 26 is smaller than the induced current in the conductive panel 42 shown in FIG. 27 , and thus the conductive panel 42 shown in FIG. 26 has less influence on the efficiency of wireless power transmission.

[0138] The patterned structure 420 of the conductive panel 42 shown in FIG28 includes eight first slits 4202. The width W2 of the first slits 4202 in FIG27 is smaller than the width W3 of the first slits 4202 in FIG28, and the length L2 of the first slits 4202 in FIG27 is equal to the length L3 of the first slits 4202 in FIG28. Comparing FIG27 and FIG28, it can be seen that the perimeter of the patterned structure 420 of the conductive panel 42 shown in FIG27 is larger than the perimeter of the patterned structure 420 of the conductive panel 42 shown in FIG28, but the area of ​​the patterned structure 420 of the conductive panel 42 shown in FIG27 is smaller than the area of ​​the patterned structure 420 of the conductive panel 42 shown in FIG28. This demonstrates that the perimeter and area of ​​the patterned structure 420 jointly affect the magnitude of the induced current.

[0139] In some specific embodiments, the first slit 4202 and the second slit 4204 are slits with negligible width.

[0140] 2. The second possible implementation method.

[0141] As shown in FIG29 , in some embodiments, the patterned structure 420 includes a first slit 4202 and at least one second slit 4204. For example, the patterned structure 420 may include one, two, three, five, or more second slits 4204. In the embodiment shown in FIG29 , the patterned structure 420 includes four second slits 4204. To ensure uniform strength across all locations of the conductive panel 42, when the patterned structure 420 includes multiple second slits 4204, the widths of the multiple second slits 4204 are equal, and the spacing between adjacent second slits 4204 within the multiple second slits 4204 may also be equal.

[0142] Each second slit 4204 in at least one second slit 4204 is connected to the first slit 4202. That is, all second slits 4204 are connected to the first slit 4202, so that all first slits 4202 and second slits 4204 form a complete patterned structure 420. In this embodiment, based on the "principle of the patterned structure 420 reducing the induced current", the following extended embodiments can be made for the patterned structure 420 of the conductive panel 42: (1) The number of second slits 4204 can be appropriately increased to increase the perimeter and area of ​​the patterned structure 420, thereby reducing the induced current. (2) The edges of the first slit 4202 and the second slit 4204 can be set as curved or jagged broken lines to increase the perimeter of the patterned structure 420, thereby reducing the induced current. (3) The length of the first slit 4202 can be extended, for example, any end of the first slit 4202 can be extended and pass through the edge of the conductive panel 42. (4) The length of any second slit 4204 can be extended to increase the perimeter of the patterned structure 420. For example, in the embodiment shown in FIG30 , one end of a second slit 4204 extends and penetrates the edge of the conductive panel 42. In this case, while ensuring that the patterned structure 420 does not cut off the conductive panel 42, the transmission path of the induced current can be extended to the greatest extent, thereby better solving the problem of heating of the conductive panel 42 when the first electronic device 40 is wirelessly charged.

[0143] In some specific embodiments, simulation software was used to simulate the scenario of "wireless power transmission between the first wireless charging coil 44 and the second wireless charging coil 52", and it was found that: when the conductive panel 42 shown in Figure 30 was located between the first wireless charging coil 44 and the second wireless charging coil 52, the efficiency of wireless power transmission was approximately 60.42%; when the conductive panel 42 shown in Figure 31 was located between the first wireless charging coil 44 and the second wireless charging coil 52, the efficiency of wireless power transmission was approximately 60.26%; when the conductive panel 42 shown in Figure 32 was located between the first wireless charging coil 44 and the second wireless charging coil 52, the efficiency of wireless power transmission was approximately 34.28%.

[0144] The patterned structure 420 of the conductive panel 42 shown in FIG30 includes four second slits 4204, the patterned structure 420 of the conductive panel 42 shown in FIG31 includes three second slits 4204, and the patterned structure 420 of the conductive panel 42 shown in FIG32 includes two second slits 4204. In the embodiments shown in FIG30 to FIG32, the length and width of the first slits 4202 are equal; except for the second slit 4204 extending through the edge of the conductive panel 42, the lengths and widths of the other second slits 4204 are also equal. By comparing FIG30 to FIG32, the following relationship can be obtained:

[0145] The perimeter of the patterned structure 420 of the conductive panel 42 shown in Figure 30 is greater than the perimeter of the patterned structure 420 of the conductive panel 42 shown in Figure 31 and is greater than the perimeter of the patterned structure 420 of the conductive panel 42 shown in Figure 32; the area of ​​the patterned structure 420 of the conductive panel 42 shown in Figure 30 is greater than the area of ​​the patterned structure 420 of the conductive panel 42 shown in Figure 31 and is greater than the area of ​​the patterned structure 420 of the conductive panel 42 shown in Figure 32.

[0146] In this case, the induced current in the conductive panel 42 shown in Figure 30 is the smallest, and the effect on the efficiency of wireless power transmission is the smallest. The induced current in the conductive panel 42 shown in Figure 32 is the largest, and the effect on the efficiency of wireless power transmission is also the largest.

[0147] In the two possible implementations described above, the first direction X and the second direction Y are both perpendicular to each other. In this case, the first slit 4202 extending along the first direction X and the second slit 4204 extending along the second direction Y are also perpendicular to each other. It will be appreciated that in other embodiments not shown in this application, the angle between the first direction X and the second direction Y may also be acute or obtuse. In this case, the first slit 4202 and the second slit 4204 intersect but are not perpendicular.

[0148] 3. The third possible implementation method.

[0149] As shown in FIG33 , in some embodiments, the patterned structure 420 includes N first slits 4202 . Here, N is an integer greater than or equal to 3. For example, N can be 3, 4, 5, 7, 9, etc. No two of the N first slits 4202 are located on the same straight line. The first end of the Mth first slit 4202 among the N first slits 4202 is connected to the first end of the M+1th first slit 4202 among the N first slits 4202. The second end of the M+1th first slit 4202 is connected to the second end of the M+2th first slit 4202 among the N first slits 4202. Here, M is an odd number and is less than or equal to N-2, i.e., M can be 1, 3, 5, 7, 9, etc.

[0150] In the embodiment shown in FIG33 , N is equal to 13. That is, the patterned structure 420 includes 13 first slits 4202. The first end of the first first slit 4202 is connected to the first end of the second first slit 4202, and the second end of the second first slit 4202 is connected to the second end of the third first slit 4202; the first end of the third first slit 4202 is connected to the first end of the fourth first slit 4202, and the second end of the fourth first slit 4202 is connected to the second end of the fifth first slit 4202; the first end of the fifth first slit 4202 is connected to the first end of the sixth first slit 4202, and the second end of the sixth first slit 4202 is connected to the second end of the seventh first slit 4202. It will be understood that the terms "first end" and "second end" are relative terms. For example, in the embodiment shown in FIG33 , the first end of the first slit 4202 refers to the right end along the first direction X, and the second end of the first slit 4202 refers to the left end along the first direction X. In other embodiments, the first end of the first slit 4202 may also refer to the left end along the first direction X, and the second end of the first slit 4202 may also refer to the right end along the first direction X.

[0151] In some embodiments, since the second end of the first first slit 4202 among the N first slits 4202 is not connected to the other first slits 4202, in order to maximize the extension of the transmission path of the induced current, the second end of the first first slit 4202 may also extend and pass through the edge of the conductive panel 42. Alternatively, as shown in FIG34 , the end of the Nth first slit 4202 among the N first slits 4202 that is not connected to the N-1th first slit 4202 extends and passes through the edge of the conductive panel 42.

[0152] In some specific embodiments, simulation software was used to simulate the scenario of "wireless power transmission between the first wireless charging coil 44 and the second wireless charging coil 52". It was found that when the conductive panel 42 shown in Figure 34 is located between the first wireless charging coil 44 and the second wireless charging coil 52, the efficiency of wireless power transmission is approximately 67.3%.

[0153] 4. The fourth possible implementation method.

[0154] In some embodiments, the patterned structure 420 includes at least one spiral slit. For example, FIG. 35 illustrates an embodiment in which the patterned structure 420 includes a spiral slit. The spiral slit extends in a first direction X and a second direction Y. Similarly, to maximize the transmission path of the induced current, one end of the at least one spiral slit near the edge of the conductive panel 42 may extend through the edge of the conductive panel 42.

[0155] 5. The fifth possible implementation method.

[0156] As shown in FIG36 , in some embodiments, patterned structure 420 may include multiple fan-shaped structures. The multiple fan-shaped structures divide conductive panel 42 into a first portion 422, a second portion 424, and a connector 426. The number of connectors 426 may be one or more. First portion 422 is provided with a hole. Second portion 424 is positioned within the hole of first portion 422 and connected to first portion 422 via connector 426. In this embodiment, first portion 422, second portion 424, and connector 426 may be integrally formed.

[0157] Specifically, in the embodiment shown in FIG36 , the patterned structure 420 includes six fan-shaped structures. The six fan-shaped structures divide the conductive panel 42 into a first component 422, a second component 424, and six connectors 426. The second component 424 is located within the hole of the first component 422 and is connected to the first component 422 via the six connectors 426. In some specific embodiments, simulation software was used to simulate the scenario of "wireless power transmission between the first wireless charging coil 44 and the second wireless charging coil 52." It was found that when the conductive panel 42 shown in FIG36 is located between the first wireless charging coil 44 and the second wireless charging coil 52, the efficiency of wireless power transmission is approximately 75.16%.

[0158] In the embodiment shown in FIG37 , the patterned structure 420 includes eight fan-shaped structures. The eight fan-shaped structures divide the conductive panel 42 into a first component 422, a second component 424, and eight connectors 426. The second component 424 is located within the hole of the first component 422 and is connected to the first component 422 via the eight connectors 426. In some specific embodiments, simulation software was used to simulate the scenario of "wireless power transmission between the first wireless charging coil 44 and the second wireless charging coil 52." It was found that when the conductive panel 42 shown in FIG37 is located between the first wireless charging coil 44 and the second wireless charging coil 52, the efficiency of wireless power transmission is approximately 75.08%.

[0159] In the embodiment shown in FIG38 , the patterned structure 420 includes twelve fan-shaped structures. The twelve fan-shaped structures divide the conductive panel 42 into a first component 422, a second component 424, and twelve connectors 426. The second component 424 is located within the hole of the first component 422 and is connected to the first component 422 via the twelve connectors 426. In some specific embodiments, simulation software was used to simulate the scenario of "wireless power transmission between the first wireless charging coil 44 and the second wireless charging coil 52." It was found that when the conductive panel 42 shown in FIG38 is located between the first wireless charging coil 44 and the second wireless charging coil 52, the efficiency of wireless power transmission is approximately 73.86%.

[0160] In the embodiment shown in FIG39 , the patterned structure 420 includes eleven fan-shaped structures. The eleven fan-shaped structures divide the conductive panel 42 into a first component 422, a second component 424, and eleven connectors 426. The second component 424 is located within the hole of the first component 422 and is connected to the first component 422 via the eleven connectors 426. In some specific embodiments, simulation software was used to simulate the scenario of "wireless power transmission between the first wireless charging coil 44 and the second wireless charging coil 52." It was found that when the conductive panel 42 shown in FIG39 is located between the first wireless charging coil 44 and the second wireless charging coil 52, the efficiency of wireless power transmission is approximately 74.93%.

[0161] In the embodiments shown in Figures 36 to 39, the possible paths of the induced current are also shown with dotted lines. It can be understood that in this possible implementation, as the number of connectors 426 decreases, the efficiency of wireless power transmission increases because the induced current in the conductive panel 42 always surrounds the patterned structure 420 and is transmitted along the shortest path. When multiple connectors 426 in a conductive panel 42 are distributed at equal distances, as the number of connectors 426 decreases, the spacing between two adjacent connectors 426 will increase, that is, the circumference of each fan-shaped patterned structure 420 will increase. In this case, the path of the induced current transmitted around the patterned structure 420 will be extended, thereby increasing the impedance of the loop where the induced current is located, reducing the induced current, and reducing the heating power of the conductive panel 42.

[0162] 6. The sixth possible implementation method.

[0163] In the embodiments shown in Figures 25 to 35 , the conductive panel 42 only includes a single patterned structure 420. "One patterned structure 420" here means that the various components comprising the patterned structure 420 (e.g., the first slit 4202, the second slit 4204, the spiral slit, etc.) are connected, thereby forming a complete, undivided pattern. For example, in the embodiments shown in Figures 36 to 39 , the conductive panel 42 includes multiple patterned structures 420.

[0164] It is understood that in some other embodiments, the conductive panel 42 may also have multiple patterned structures 420 as shown in Figures 25 to 35. For example, Figure 40 shows a conductive panel 42 including two patterned structures 420, each of which is the same as the patterned structure 420 in the conductive panel 42 shown in Figure 26. Figure 41 shows a conductive panel 42, which also includes two patterned structures 420. Figure 42 shows a conductive panel 42, which includes two patterned structures 420, which are two spiral slits nested in each other.

[0165] In some specific embodiments, simulation software was used to simulate the scenario of "wireless power transmission between the first wireless charging coil 44 and the second wireless charging coil 52", and it was found that: when the conductive panel 42 shown in Figure 41 was located between the first wireless charging coil 44 and the second wireless charging coil 52, the efficiency of wireless power transmission was approximately 76.7%; when the conductive panel 42 shown in Figure 42 was located between the first wireless charging coil 44 and the second wireless charging coil 52, the efficiency of wireless power transmission was approximately 66.23%.

[0166] According to the above embodiments, among the various conductive panels 42 provided in the embodiments of the present application, except for the conductive panel 42 shown in Figure 32, the efficiency of wireless power transmission of other conductive panels 42 when located between the first wireless charging coil 44 and the second wireless charging coil 52 is greater than 60%.

[0167] The following describes further improvements to the conductive panel 42 provided in the embodiment of the present application in conjunction with the accompanying drawings.

[0168] In some embodiments, when the patterned structure 420 extends and penetrates the edge of the conductive panel 42, the conductive panel 42 may further include capacitors, thereby further improving the wireless charging efficiency of the first electronic device 40. That is, when the patterned structure 420 is as shown in Figures 26 to 28, 30 to 32, 34 and 35, and 40 to 42, the conductive panel 42 may also include capacitors. The following describes the configuration and principles of the capacitors from two possible implementations.

[0169] 1. The first possible implementation method.

[0170] Taking the conductive panel 42 shown in FIG. 26 as an example, the structure of the conductive panel 42 after the capacitor is provided can be shown in FIG. 43 . In the embodiment shown in FIG. 43 , the edge of the conductive panel 42 through which the patterned structure 420 extends and passes is referred to as the first edge 421 . In this case, the patterned structure 420 divides the first edge 421 into a first sub-edge 4211 and a second sub-edge 4212 . Here, a first capacitor C1 is connected between the first sub-edge 4211 and the second sub-edge 4212 , and the capacitance value of the first capacitor C1 satisfies the following conditions:

[0171] Where f is the frequency of the AC signal on the first wireless charging coil 44 during wireless power transmission. It will be appreciated that during wireless power transmission, the frequency of the AC signal on the first wireless charging coil 44 is equal to the frequency of the AC signal on the second wireless charging coil 52. L1 is the inductance of the loop formed by the conductive panel 42 and the first capacitor C1. It will be appreciated that in the loop formed by the conductive panel 42 and the first capacitor C1, the conductive panel 42 acts as a conductor and necessarily has an inductance. C1 is the capacitance of the loop formed by the conductive panel 42 and the first capacitor C1.

[0172] It will be appreciated that, in the embodiments of the present application, any conductive panel 42 where the patterned structure 420 extends and passes through an edge may be provided with a capacitor, and is not limited to the conductive panels shown in Figures 26 to 28, 30 to 32, 34 and 35, and 40 to 42. For example, in the embodiment shown in Figure 44, the patterned structure 420 only includes a second slit 4204 extending and passing through a first edge 421 of the conductive panel 42. In this case, the patterned structure 420 also divides the first edge 421 into a first sub-edge 4211 and a second sub-edge 4212. In this case, a first capacitor C1 is connected between the first sub-edge 4211 and the second sub-edge 4212.

[0173] The principle of this embodiment will be described below with reference to the accompanying drawings.

[0174] When the conductive panel 42 shown in FIG26 is positioned between the first wireless charging coil 44 and the second wireless charging coil 52, the direction of the induced current in the conductive panel 42 is shown in FIG45. Here, the path through which the induced current flows can be divided into a first path I1 and a second path I2. The first path I1 refers to the path through which the induced current does not flow around the patterned structure 420, while the second path I2 refers to the path through which the induced current flows around the patterned structure 420. As shown in FIG45, because the first path I1 and the second path I2 form a loop for the induced current, the direction of the induced current in the first path I1 and the direction of the induced current in the second path I2 are opposite. The direction of the induced current in the second path I2 is opposite to the direction of the induced current in the first wireless charging coil 44 and the second wireless charging coil 52. Therefore, in the aforementioned embodiment, the patterned structure 420 is required to extend the second path I2. In other words, the direction of the induced current in the first path I1 is the same as the direction of the induced current in the first wireless charging coil 44 and the second wireless charging coil 52.

[0175] Based on this, in this embodiment, the direction of the induced current can be changed by setting the first capacitor C1. Specifically, when the first capacitor C1 is connected between the first sub-edge 4211 and the second sub-edge 4212, the direction of the induced current in the conductive panel 42 is shown in Figure 46. At this time, the direction of the induced current is the same as the direction of the induced current in the first wireless charging coil 44 and the second wireless charging coil 52. In this case, if the capacitance value of the first capacitor C1 satisfies formula ①, the loop formed by the conductive panel 42 and the first capacitor C1 is equivalent to a wireless charging relay coil, which can play a relay role in the process of wireless power transmission, thereby improving the wireless charging efficiency of the first electronic device 40.

[0176] Furthermore, the longer the perimeter of the patterned structure 420 in the conductive panel 42, the greater the inductance of the conductive panel 42, and the greater the inductance L1 of the loop formed by the conductive panel 42 and the first capacitor C1. Based on the above formula (1), it can be seen that in this case, the smaller the capacitance C1 of the loop formed by the conductive panel 42 and the first capacitor C1, the smaller the capacitance of the first capacitor C1. Generally, the smaller the capacitance of the first capacitor C1, the smaller the volume of the first capacitor C1, which is more conducive to the installation of the first capacitor C1.

[0177] It can be understood that, as shown in Figure 47, in this embodiment, the patterned structure 420 can also extend and penetrate the second edge 423 of the conductive panel 42, thereby dividing the second edge 423 of the conductive panel 42 into a third sub-edge 4231 and a fourth edge. The second edge 423 here can be any edge of the conductive panel 42 other than the first edge 421, or any one of the first sub-edge 4211 and the second sub-edge 4212. Here, a fourth capacitor C4 is connected between the third sub-edge 4231 and the fourth sub-edge 4232. In this case, the first capacitor C1 and the fourth capacitor C4 are connected in series, and the capacitance values ​​of the first capacitor C1 and the fourth capacitor C4 need to meet the following conditions:

[0178] Wherein, f is the frequency of the AC signal on the first wireless charging coil 44 during wireless power transmission; L3 is the inductance value of the loop formed by the conductive panel 42, the first capacitor C1, and the fourth capacitor C4; C3 is the capacitance value of the loop formed by the conductive panel 42, the first capacitor C1, and the fourth capacitor C4.

[0179] 2. The second possible implementation method.

[0180] In some embodiments, the capacitance included in the conductive panel 42 may also be a parasitic capacitance formed in the first electronic device 40 including the conductive panel 42 .

[0181] Specifically, a conductive panel 42 is applied to a first electronic device 40. The first electronic device 40 includes not only the conductive panel 42 and the first wireless charging coil 44, but also other conductive components 46. For example, when the first electronic device 40 is a terminal device, the other conductive components 46 may be a metal frame or other metal structural component of the terminal device. When the first electronic device 40 is a wireless charging device, the other conductive components 46 may be a circuit board or other metal structural component of the wireless charging device.

[0182] Still taking the conductive panel 42 shown in Figure 26 as an example, the structure when parasitic capacitance is formed between the conductive panel 42 and other conductive devices 46 can be as shown in Figure 48. In the embodiment shown in Figure 48, the conductive panel 42 has a first edge 421. The patterned structure 420 extends and runs through the first edge 421, and divides the first edge 421 into a first sub-edge 4211 and a second sub-edge 4212. The first sub-edge 4211 and the other conductive devices 46 in the first electronic device 40 form a second capacitor C2, and the second sub-edge 4212 and the other conductive devices 46 form a third capacitor C3. In this case, the second capacitor C2 and the third capacitor C3 are connected in series. It can be understood that the second capacitor C2 and the third capacitor C3 are both parasitic capacitors and are not real capacitive devices. The capacitance value of the second capacitor C2 and the capacitance value of the third capacitor C3 meet the following conditions:

[0183] Wherein, f is the frequency of the AC signal on the first wireless charging coil 44 during wireless power transmission; L2 is the inductance value of the loop formed by the conductive panel 42, the second capacitor C2, the other conductive components 46, and the third capacitor C3; C2 is the capacitance value of the loop formed by the conductive panel 42, the second capacitor C2, the other conductive components 46, and the third capacitor C3.

[0184] In this embodiment, the loop composed of the conductive panel 42, the second capacitor C2, other conductive components 46, and the third capacitor C3 is equivalent to a relay coil for wireless charging. The relay coil can act as a relay during wireless power transmission, thereby improving the wireless charging efficiency of the first electronic device 40.

[0185] The following describes the efficiency of wireless power transmission when the conductive panel 42 in the above-mentioned different embodiments is located between the first wireless charging coil 44 and the second wireless charging coil 52 through experimental data.

[0186] As can be understood, when wireless power transmission is performed, the first wireless charging coil 44 and the second wireless charging coil 52 are both connected in series with a capacitor. In the following experiments, the first wireless charging coil 44 serves as a wireless charging transmitting coil with an inductance of 4.8μH (microhenries), and the capacitance of the capacitor connected in series with it is 990nF (nanofarads). The second wireless charging coil 52 serves as a wireless charging receiving coil with an inductance of 4.8μH and the capacitance of the capacitor connected in series with it is 990nF. In the following experiments, two 1mm thick plastic spacers are placed between the first wireless charging coil 44 and the conductive panel 42 to simulate the spacing between the first wireless charging coil 44 and the conductive panel 42 in actual applications; three 1mm thick plastic spacers are placed between the second wireless charging coil 52 and the conductive panel 42 to simulate the spacing between the second wireless charging coil 52 and the conductive panel 42 in actual applications.

[0187] In the first experiment, the structure of the conductive panel 42 is shown in FIG. 26 , and the experimental data are shown in Table 1 below.

[0188] Table 1

[0189] In Table 1, input voltage refers to the input voltage of the first wireless charging coil 44, measured in V (volts). Input current refers to the input current of the first wireless charging coil 44, measured in A (amperes). Input power refers to the input power of the first wireless charging coil 44, measured in W (watts). Output voltage refers to the output voltage of the second wireless charging coil 52, measured in V. Output current refers to the output current of the second wireless charging coil 52, measured in A. Output power refers to the output power of the second wireless charging coil 52, measured in W. Operating frequency refers to the frequency of the AC signal on the first wireless charging coil 44 and the second wireless charging coil 52, measured in KHz (kilohertz). Wireless power transmission efficiency is the percentage of output power to input power. As shown in Table 1, as input power increases, wireless power transmission efficiency also increases.

[0190] The above experiment was repeated for a second time, and the experimental data obtained are shown in Table 2 below.

[0191] Table 2

[0192] In the second experiment, the structure of the conductive panel 42 is shown in FIG43. That is, based on the first experiment, a first capacitor C1 is added to the conductive panel 42. The capacitance of the first capacitor C1 is 10nF. The experimental data obtained are shown in Table 3 below.

[0193] Table 3

[0194] The above experiment was repeated for a second time, and the experimental data obtained are shown in Table 4 below.

[0195] Table 4

[0196] Comparing Tables 1 to 4, it can be seen that the efficiency of wireless power transmission is significantly improved when the conductive panel 42 with the first capacitor C1 is located between the first wireless charging coil 44 and the second wireless charging coil 52, compared to the conductive panel 42 without the first capacitor C1.

[0197] In addition, experiments were conducted to examine the efficiency of wireless power transmission when a conductive panel 42 with patterned structures 420 of various shapes was positioned between a first wireless charging coil 44 and a second wireless charging coil 52. The results are as follows. In the following experiments, the widths of the first and second slits 4202 and 4204 were not considered.

[0198] In the third experiment, the structure of the conductive panel 42 is shown in FIG. 26 , and the dimensional data of the patterned structure 420 are shown in Table 5 below.

[0199] Table 5

[0200] In Table 5, the units of length and perimeter are both cm (centimeter). As can be seen from Table 5, in this experiment, the conductive panel 42 includes eleven first slits 4202. Each first slit 4202 has a length of 4 cm. Without considering the width of each first slit 4202, the perimeter of each first slit 4202 is 8 cm. Therefore, the total perimeter of the eleven first slits 4202 is 88 cm. The conductive panel 42 includes one second slit 4204. The length of the second slit 4204 is 6 cm. Without considering the width of the second slit 4204, the perimeter of the second slit 4204 is 12 cm. Therefore, the total perimeter of the patterned structure 420 is 100 cm.

[0201] Based on the conductive panel 42, the experimental data obtained are shown in Table 6 below.

[0202] Table 6

[0203] According to Table 6, as the input power increases, the wireless power transmission efficiency also gradually increases.

[0204] In the fourth experiment, the structure of the conductive panel 42 is shown in FIG. 33 , and the dimensional data of the patterned structure 420 are shown in Table 7 below.

[0205] Table 7

[0206] As shown in Table 7, in this experiment, the conductive panel 42 includes 11 first slits 4202. Each first slit 4202 has a length of 4 cm. Without considering the width of each first slit 4202, the circumference of each first slit 4202 is 8 cm. Therefore, the total circumference of the 11 first slits 4202 is 88 cm. "Connecting slits" refer to slits connecting two adjacent first slits 4202. Their total length is 6 cm, and without considering the width of the slits, their circumference is 12 cm. Therefore, the total circumference of the patterned structure 420 is 100 cm.

[0207] Based on the conductive panel 42, the experimental data obtained are shown in Table 8 below.

[0208] Table 8

[0209] In the fifth experiment, the structure of the conductive panel 42 is shown in FIG. 40 , and the dimensional data of the patterned structure 420 are shown in Table 9 below.

[0210] Table 9

[0211] As can be seen from Table 9, in this experiment, the conductive panel 42 includes 22 first slits 4202. The length of each first slit 4202 is 2 cm. Without considering the width of the first slit 4202, the circumference of each first slit 4202 is 4 cm. Therefore, the total circumference of the 22 first slits 4202 is 88 cm. The conductive panel 42 includes two second slits 4204. The length of the second slit 4204 is 6 cm. Without considering the width of the second slit 4204, the circumference of the second slit 4204 is 12 cm. Each second slit 4204 is used to connect 11 first slits 4202. The total circumference of the patterned structure 420 is 112 cm.

[0212] Based on the conductive panel 42, the experimental data obtained are shown in Table 10 below.

[0213] Table 10

[0214] In summary, the conductive panel 42 provided in the embodiment of the present application has at least the following beneficial effects: (1) The patterned structure 420 can cut off the path of the induced current, thereby increasing the impedance of the loop where the induced current is located, reducing the magnitude of the induced current, and reducing the heating power of the conductive panel 42. (2) By further setting the first capacitor C1 or parasitic capacitor, the loop formed by the conductive panel 42 and the capacitor is equivalent to a relay coil for wireless charging. The relay coil can play a relay role in the process of wireless power transmission, thereby improving the wireless charging efficiency of the first electronic device 40. (3) Extending the patterned structure 420 and passing through the edge of the conductive panel 42 can extend the transmission path of the induced current to the greatest extent, thereby better solving the problem of heating of the conductive panel 42 when the first electronic device 40 is wirelessly charged. (4) Insulating material can be filled in the patterned structure 420 to ensure the strength of the conductive panel 42.

[0215] The embodiment of the present application further provides a first electronic device 40 , comprising a first wireless charging coil 44 and a conductive panel 42 as in any of the above embodiments.

[0216] In some embodiments, the first electronic device 40 may include a display screen. In this case, the display screen may be stacked with the conductive panel 42 along the thickness direction of the first electronic device 40, so that the conductive panel 42 serves as a screen support layer to support the display screen.

[0217] For example, in some specific embodiments, when the first electronic device 40 is the terminal device 10 shown in FIG. 6 and FIG. 7 , the conductive panel 42 can serve as the second sub-support layer 124 and the fourth sub-support layer 134 of the terminal device.

[0218] When the conductive panel 42 serves as the second sub-support layer 124, the first sub-support layer 122 remains a panel without the patterned structure 420, and the first sub-support layer 122 serves as a screen support layer to support the first display area 112. The first sub-support layer 122 and the conductive panel 42 can be an integrally formed structure, and the conductive panel 42 is used to support the second display area 114.

[0219] When the conductive panel 42 serves as the fourth sub-support layer 134, the third sub-support layer 132 remains a panel without the patterned structure 420, and the third sub-support layer 132 serves as a screen support layer to support the first display area 112. The third sub-support layer 132 and the conductive panel 42 can be an integrally formed structure, and the conductive panel 42 is used to support the second display area 114.

[0220] In this embodiment, the first display area 112 and the second display area 114 can be bent toward the side where the conductive panel 42 is located.

[0221] It is understood that when the patterned structure 420 of the conductive panel 42 is a slit (including a first slit 4202, a second slit 4204, or a spiral slit), and the conductive panel 42 serves as the second sub-support layer 124 and the fourth sub-support layer 134 of the terminal device, the slit width can be set as small as possible. This can, on the one hand, extend the transmission path of the induced current by increasing the number of slits, and on the other hand, has a minimal impact on the strength of the conductive panel 42, which is beneficial for the conductive panel 42 to serve as a screen support layer to support the second display area 114.

[0222] It is understandable that there are two reasons for using metal as the material of the screen support layer: on the one hand, metal has higher strength; on the other hand, metal has better heat dissipation. Figure 49 is a curve showing the relationship between the temperature and time of a screen support layer of different materials during wireless charging provided in an embodiment of the present application. In Figure 49, the horizontal axis is the time for the terminal device to perform wireless charging, in units of S (seconds); the vertical axis is the temperature of the screen support layer, in units of ℃ (degrees Celsius). Among them, curve ① represents the relationship between the temperature and time of the screen support layer made of metal material during wireless charging; curve ② represents the relationship between the temperature and time of the screen support layer made of ceramic material during wireless charging; curve ③ represents the relationship between the temperature and time of the screen support layer made of plastic material during wireless charging. According to Figure 49, when other conditions remain unchanged, the temperature of the screen support layer made of metal material rises the slowest and has the best heat dissipation performance.

[0223] In some embodiments, when the first electronic device 40 is the terminal device 10 shown in FIG6 , FIG7 or FIG10 , the conductive panel 42 may also serve as a back cover 170 of the terminal device 10 . The back cover 170 is disposed opposite to the display screen 110 .

[0224] In other embodiments, when the first electronic device 40 is the wireless charging device 20 shown in FIG11 , the conductive panel 42 can serve as the housing 230 of the wireless charging device 20. When the wireless charging device 20 wirelessly charges the terminal device 10, the housing 230 formed by the conductive panel 42 can be located between the wireless charging transmitting coil and the wireless charging receiving coil.

[0225] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. 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. 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 various embodiments of the present application, and should all be included in the scope of protection of the present application.

Claims

1. A conductive panel, applied to an electronic device, wherein the electronic device includes a first wireless charging coil, characterized in that: A second wireless charging coil can be provided on a side of the conductive panel away from the first wireless charging coil, and the first wireless charging coil is used to perform wireless power transmission with the second wireless charging coil; A patterned structure is provided on the conductive panel; along the thickness direction of the conductive panel, the patterned structure penetrates the conductive panel.

2. The conductive panel according to claim 1, wherein The patterned structure includes a second slit and at least one first slit; The first slit extends along a first direction, and the second slit extends along a second direction, the first direction and the second direction are both extension directions of the conductive panel, and the first direction and the second direction are two different directions; Each of the at least one first slit is connected to the second slit.

3. The conductive panel according to claim 2, wherein: Any end of the second slit extends and passes through the edge of the conductive panel; or any end of any first slit of the at least one first slit extends and passes through the edge of the conductive panel.

4. The conductive panel according to claim 2 or 3, characterized in that: Any two of the first direction, the second direction, and the thickness direction are perpendicular to each other.

5. The conductive panel according to any one of claims 1 to 4, characterized in that: The patterned structure includes N first slits, where N is an integer greater than or equal to 3; Any two first slits among the N first slits are not located on the same straight line; the first end of the Mth first slit among the N first slits is connected to the first end of the M+1th first slit among the N first slits, and the second end of the M+1th first slit is connected to the second end of the M+2th first slit among the N first slits, where M is an odd number and is less than or equal to N-2.

6. The conductive panel according to claim 5, wherein: The second end of the first first slit among the N first slits extends and passes through the edge of the conductive panel.

7. The conductive panel according to any one of claims 1 to 6, characterized in that: The patterned structure includes at least one spiral slit.

8. The conductive panel according to claim 7, wherein: The at least one spiral slit extends from one end close to the edge of the conductive panel and penetrates the edge of the conductive panel.

9. The conductive panel according to any one of claims 1 to 8, wherein: The patterned structure divides the conductive panel into a first part, a second part, and a connecting part; The first component is provided with a hole, the second component is located in the hole, and the second component is connected to the first component through the connecting member.

10. The conductive panel according to claim 9, wherein: The first component, the second component and the connecting member are an integrally formed structure.

11. The conductive panel according to claim 1, wherein The conductive panel has a first edge, the patterned structure extends and passes through the first edge, and the patterned structure divides the first edge into a first sub-edge and a second sub-edge; A first capacitor is connected between the first sub-edge and the second sub-edge, and the capacitance of the first capacitor satisfies the following conditions: Among them, f is the frequency of the AC signal on the first wireless charging coil during wireless power transmission; L1 is the inductance value of the loop formed by the conductive panel and the first capacitor; C1 is the capacitance value of the loop formed by the conductive panel and the first capacitor.

12. The conductive panel according to claim 1, wherein The conductive panel has a first edge, the patterned structure extends and passes through the first edge, and the patterned structure divides the first edge into a first sub-edge and a second sub-edge; The first sub-edge and other conductive components in the electronic device form a second capacitor, and the second sub-edge and the other conductive components form a third capacitor. The capacitance values ​​of the second capacitor and the third capacitor satisfy the following conditions: Wherein, f is the frequency of the AC signal on the first wireless charging coil during wireless power transmission; L2 is the inductance value of the loop formed by the conductive panel, the second capacitor, the other conductive components, and the third capacitor; C2 is the capacitance value of the loop formed by the conductive panel, the second capacitor, the other conductive components, and the third capacitor.

13. The conductive panel according to any one of claims 1 to 12, characterized in that: When the first wireless charging coil and the second wireless charging coil perform wireless power transmission, along the thickness direction, the projection of the first wireless charging coil on the plane where the conductive panel is located is located within the coverage range of the patterned structure, and the projection of the second wireless charging coil on the plane where the conductive panel is located is located within the coverage range of the patterned structure.

14. An electronic device, characterized in that: The device comprises a first wireless charging coil and the conductive panel according to any one of claims 1 to 13.

15. The electronic device according to claim 14, wherein: The electronic device further includes a display screen; The display screen and the conductive panel are stacked along the thickness direction of the electronic device.

16. The electronic device according to claim 15, wherein: The display screen includes a first display area and a second display area adjacent to each other; the first display area and the second display area are both capable of bending toward the side where the conductive panel is located.

17. The electronic device according to claim 14, wherein: The electronic device further includes a display screen; The conductive panel is the back cover of the electronic device, and the back cover is arranged opposite to the display screen.

18. The electronic device according to claim 14, wherein: The electronic device is a wireless charging device, and the conductive panel is a shell of the wireless charging device.

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