Electronic device

Abstract

The present application relates to the technical field of charging, and discloses an electronic device. The electronic device comprises: a frame body. A main circuit board and a battery are arranged in the frame body. A charging interface is arranged on one side of the frame body. The battery is arranged between the charging interface and the main circuit board. The charging interface is electrically connected to the main circuit board by means of an FPC. The FPC comprises a main body portion and a branch portion. The branch portion is arranged on one side of the main body portion. Two ends of the main body portion are electrically connected to the charging interface and the main circuit board, respectively. A first end of the branch portion is connected to the main body portion, and a second end of the branch portion is grounded.

Description

electronic devices

[0001] This application claims priority to Chinese patent application filed on October 23, 2024, with application number 202411486452.5 and entitled "Electronic Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application belongs to the field of charging technology, specifically relating to an electronic device. Background Technology

[0003] Currently, electronic devices include a battery, a charging interface, a mid-frame, and a flexible printed circuit (FPC). The charging interface and battery are fixed to the mid-frame, and one end of the FPC is connected to the battery, while the other end is connected to the charging interface. Thus, when charging the electronic device, the charging current can first flow from the charging interface through the FPC to the battery, and then from the battery through the FPC and the mid-frame to the ground terminal of the charging interface.

[0004] However, when charging electronic devices, the path of the charging current flowing from the battery to the ground of the charging interface has a relatively large impedance, which may result in a longer charging time for the electronic devices, thus leading to lower charging efficiency. Summary of the Invention

[0005] This application aims to provide an electronic device that at least solves the problem of low charging efficiency of electronic devices.

[0006] To solve the above-mentioned technical problems, this application is implemented as follows:

[0007] In a first aspect, embodiments of this application provide an electronic device comprising: a frame, a main circuit board and a battery disposed within the frame, a charging interface disposed on one side of the frame, the battery disposed between the charging interface and the main circuit board, and the charging interface and the main circuit board being electrically connected via an FPC; wherein the FPC comprises a main body and a branch, the branch being disposed on one side of the main body, both ends of the main body being electrically connected to the charging interface and the main circuit board respectively, a first end of the branch being connected to the main body, and a second end of the branch being grounded.

[0008] In embodiments of this application, the electronic device includes a frame, within which a main circuit board and a battery are disposed. A charging interface is located on one side of the frame, and the battery is disposed between the charging interface and the main circuit board. The charging interface and the main circuit board are electrically connected via an FPC. The FPC includes a main body and a branch portion. The branch portion is located on one side of the main body. Both ends of the main body are electrically connected to the charging interface and the main circuit board, respectively. A first end of the branch portion is connected to the main body, and a second end of the branch portion is grounded. Since the FPC is divided into a main body and a branch, with the first end of the branch connected to the main body and the second end grounded, when charging the electronic device, the charging current can flow to the ground terminal of the charging interface through the paths of the battery, main circuit board, main body, and branch to the charging interface, and through the main circuit board, frame, and main body to the charging interface. Furthermore, the path from the battery through the main circuit board, frame, branch, and main body to the charging interface is connected in parallel with the other two paths. Therefore, the impedance corresponding to the path of the charging current flowing from the battery to the ground terminal of the charging interface can be reduced, thereby reducing the charging time of the electronic device and improving its charging efficiency.

[0009] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0010] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0011] Figure 1 is a schematic diagram of a traditional three-segment stacked structure in related technologies;

[0012] Figure 2 is a schematic diagram of the straight-pull three-segment stacked structure in the related technology;

[0013] Figure 3 is one of the front view structural schematic diagrams of the electronic device provided in the embodiments of this application;

[0014] Figure 4 is a second front view structural schematic diagram of the electronic device provided in the embodiment of this application;

[0015] Figure 5 is one of the bottom view structural schematic diagrams of the electronic device provided in the embodiments of this application;

[0016] Figure 6 is a third front view structural schematic diagram of the electronic device provided in the embodiment of this application;

[0017] Figure 7 is a second bottom view of the electronic device provided in the embodiment of this application;

[0018] Figure 8 is a third bottom view of the electronic device provided in the embodiments of this application;

[0019] Figure 9 is a schematic diagram of the mid-frame structure of the electronic device provided in an embodiment of this application;

[0020] Figure 10 is a fourth bottom view of the electronic device provided in the embodiment of this application;

[0021] Figure 11 is the fifth bottom view of the electronic device provided in the embodiment of this application.

[0022] Attached label: Mid-frame - 101, Mainboard - 102, Sub-board - 103, Battery - 104, FPC - 105, Charging port - 106, Battery FPC - 107, Charging chip - 108, Locking screw - 109, Locking screw - 110, Locking screw - 111, Locking screw - 112, Mid-frame - 201, Mainboard - 202, Battery - 203, FPC - 204, Charging port - 205, Battery FPC - 206, Charging chip - 207, Locking screw - 208, Locking screw - 209 Frame-10, Grounding area-100, Main circuit board-11, Battery-12, Charging interface-13, FPC-14, Main body-141, Branch-142, Exposed copper part-1421, Battery FPC-15, Reinforcing steel sheet-16, Reinforcing piece-17, Charging coil-18, First connection part-19, Metal spring-191, Metal spring-192, Second connection part-20, BTB connector-200, Sub-circuit board-21, Third connection part-22, Metal spring-221. Detailed Implementation

[0023] Embodiments of the present invention will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0024] 1. Traditional three-section stacking structure

[0025] Currently, most electronic devices (such as mobile phones) adopt the traditional three-section stacking structure, consisting of a mobile phone motherboard, battery, and sub-board. The motherboard and sub-board are connected by an FPC, and the FPC and motherboard are connected by a board-to-board (BTB) connector.

[0026] Figure 1 shows a schematic diagram of a conventional three-segment stacked structure in related technologies. As shown in Figure 1, an electronic device (e.g., a mobile phone) may include a mid-frame 101, a motherboard 102, a sub-board 103, a battery 104, an FPC 105, a charging interface 106, a battery FPC 107, and a charging chip 108. The motherboard 102 is fixed to the mid-frame 101 by locking screws 109, the sub-board 103 is fixed to the mid-frame 101 by locking screws 110, and the charging interface 106 is fixed to the sub-board 103 by locking screws 111. Therefore, when charging the mobile phone, the charging current can enter the motherboard 102 through the charging interface 106 via the FPC 105, and after being adjusted by the charging chip 108, it enters the battery 104 through the battery FPC 107 for charging. In addition, a part of the charging current can also enter the motherboard 102 through the battery FPC 107, and flow through the middle frame 101 to the sub-board 103 through the locking screw 109, and enter the ground terminal of the charging interface 106 through the locking screw 112. Another part of the charging current can also enter the motherboard 102 through the battery FPC 107, and flow to the ground terminal of the charging interface 106 through the FPC 105, thus forming a charging circuit.

[0027] 2. Straight-pull three-section stacked structure

[0028] Currently, the battery capacity of electronic devices is getting larger and larger, and the increase in battery capacity will lead to an increase in battery thickness. Therefore, in the improved direct-pull three-section stacking structure based on the above traditional three-section stacking structure, the sub-board is removed so that it can be directly connected to the FPC and the charging interface, thereby reducing the thickness of the electronic device as a whole.

[0029] Figure 2 shows a schematic diagram of a direct-pull three-segment stacked structure in related technologies. As shown in Figure 2, an electronic device (e.g., a mobile phone) may include a mid-frame 201, a motherboard 202, a battery 203, an FPC 204, a charging interface 205, a battery FPC 206, and a charging chip 207. The motherboard 202 is fixed to the mid-frame 201 by locking screws 208, and the charging interface 205 is fixed to the mid-frame 201 by locking screws 209. Therefore, when charging the mobile phone, the charging current can enter the motherboard 202 through the charging interface 205 via the FPC 204, and after being adjusted by the charging chip 207, it enters the battery 203 through the battery FPC 206 for charging. In addition, a part of the charging current can also enter the motherboard 202 through the battery FPC 206, and flow through the locking screw 208 through the middle frame 201 to the ground terminal of the charging interface 205. Another part of the charging current can also enter the motherboard 202 through the battery FPC 206, and flow through the FPC 204 to the ground terminal of the charging interface 205, thus forming a charging circuit.

[0030] 3. Other terms

[0031] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0032] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0033] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0034] The electronic device provided in the embodiments of this application will be described in detail below with reference to the accompanying drawings and through specific embodiments and application scenarios.

[0035] Figure 3 shows a schematic diagram of the structure of an electronic device provided in an embodiment of this application. As shown in Figure 3, the electronic device provided in this embodiment of the application may include: a frame 10, in which a main circuit board 11 and a battery 12 are disposed, and a charging interface 13 is disposed on one side of the frame 10. The battery 12 is disposed between the charging interface 13 and the main circuit board 11, and the charging interface 13 and the main circuit board 11 are electrically connected through a flexible circuit board FPC 14.

[0036] In some embodiments of this application, the frame 10 may specifically be a metal frame with a recessed accommodating space for accommodating other components of the electronic device.

[0037] In some embodiments of this application, the main circuit board 11 may specifically be a motherboard. Of course, the main circuit board 11 may also be other circuit boards, and this application does not limit this.

[0038] In some embodiments of this application, referring to FIG3, the battery 12 can be fixedly disposed in the aforementioned accommodating space, and the main circuit board 11 can be fixed to the frame 10 by metal screws.

[0039] In some embodiments of this application, the battery 12 can be electrically connected to the main circuit board 11. For example, referring to FIG3, the battery 12 can be electrically connected to the main circuit board 11 via the battery FPC 15.

[0040] In some embodiments of this application, the charging interface 13 can specifically be a Universal Serial Bus (USB) socket. The charging interface 13 can be directly fixed to the frame 10 by metal screws; or it can be fixed to a sub-plate provided on the frame 10 by metal screws, so as to be fixed to the frame 10 by the sub-plate.

[0041] It is understood that when the electronic device adopts the above-mentioned straight-pull three-section stacked structure, the charging interface 13 can be directly fixed to the frame 10; when the electronic device adopts the above-mentioned traditional three-section stacked structure, the charging interface 13 can be fixed to the frame 10 through the sub-board.

[0042] In this embodiment of the application, the FPC14 includes a main body 141 and a branch 142. The branch 142 is disposed on one side of the main body 141. The two ends of the main body 141 are electrically connected to the charging port 13 and the main circuit board 11, respectively. The first end of the branch 142 is connected to the main body 141, and the second end of the branch 142 is grounded.

[0043] In some embodiments of this application, referring to FIG3, a reinforcing steel sheet 16 is further provided on the main circuit board 11. A gap exists between the reinforcing steel sheet 16 and the main circuit board 11, and the end of the main body 141 connected to the main circuit board 11 can be located within this gap. It can be understood that since the reinforcing steel sheet 16 can fix the end of the main body 141 connected to the main circuit board 11 to the main circuit board 11, the strength of the end of the main body 141 connected to the main circuit board 11 can be increased, preventing breakage between the end of the main body 141 connected to the main circuit board 11 and the main circuit board 11.

[0044] In some embodiments of this application, the end of the main body 141 that is connected to the charging interface 13 can be directly and fixedly connected to the charging interface 13, or fixedly connected to the charging interface 13 by metal screws.

[0045] In some embodiments of this application, the first ends of the main body 141 and the branch 142 may be integrally formed or fixedly connected.

[0046] In some embodiments of this application, the second end of the branch 142 may be connected to the frame 10 to be grounded through the frame 10.

[0047] In some embodiments of this application, the first end of the branch 142 is connected to the main body 141 near the charging interface 13.

[0048] It is understandable that since the second end of the branch 142 can be connected to the frame 10, connecting the first end of the branch 142 to the position of the main body 141 near the charging interface 13 can reduce the length from the first end of the branch 141 to the second end of the branch 142.

[0049] Thus, since the first end of the branch can be connected to the main body near the charging port, the length between the first and second ends of the branch can be reduced when the second end of the branch is connected to the frame, thereby reducing costs.

[0050] In some embodiments of this application, in conjunction with FIG3, FIG4 and FIG5, the electronic device provided in the embodiments of this application may further include: a reinforcing piece 17 disposed on the frame 10, and there is a gap between the reinforcing piece 17 and the frame 10, wherein the second end of the branch 142 is located in the gap.

[0051] In some embodiments of this application, the reinforcing sheet 17 may specifically be a steel sheet.

[0052] It is understandable that the second end of the branch 142 can be fixed to the frame 10 by the reinforcing piece 17.

[0053] Thus, it can be seen that since a reinforcing plate is also provided in the electronic device, and the reinforcing plate can fix the second end of the branch to the frame, the strength of the second end of the branch can be increased, and the second end of the branch can be prevented from breaking.

[0054] In some embodiments of this application, as shown in FIG6, the electronic device is further provided with a charging coil 18, which is disposed between the charging interface 13 and the main circuit board 11. The main body 141 is bent in a direction away from the charging coil 18.

[0055] In this embodiment of the application, referring to FIG6, since other device components of the electronic device (such as charging coil 18, battery 12, etc.) may be arranged between the charging interface 13 and the main circuit board 11, the main body 141 can be bent in a direction away from the charging coil 18 to make more space for other device components, so that the electronic device can have enough space to arrange the charging coil 18; or, the battery 12 can have enough space to apply adhesive.

[0056] Thus, since the main body can be fully extended away from the charging coil, more space can be left for other components of the electronic device. Therefore, other components can have enough space for fixing and layout. Furthermore, the battery can have enough space for adhesive application, thereby improving the reliability of battery fixing.

[0057] In some embodiments of this application, referring to FIG6, the charging coil 18 and the branch 142 are located on different sides of the main body 141.

[0058] Thus, since the charging coil and the branch are located on different sides of the main body, the overlap between the branch and the charging coil can be avoided, thereby reducing the impact of the branch on the charging coil.

[0059] In some embodiments of this application, referring to FIG6, a copper-draining portion 1421 is provided on the second end of the branch 142.

[0060] Therefore, since a copper leakage section is provided at the second end of the branch, the impedance between the second end of the branch and the ground can be reduced. Thus, the charging time of the electronic device can be further reduced, thereby further improving the charging efficiency of the electronic device.

[0061] In some embodiments of this application, the second end of the branch 142 can be directly connected to the frame 10; or, the second end of the branch 142 can be indirectly connected to the frame 10 through other components. These other components can be a sub-board (e.g., the sub-circuit board in the following embodiments) and / or a connecting part (e.g., the first connecting part, the second connecting part, and the third connecting part in the following embodiments).

[0062] In one possible implementation of this application, as shown in FIG7, a grounding area 100 is provided on the frame 10; the electronic device provided in the embodiment of this application may further include: a first connecting part 19, the first end of the first connecting part 19 being connected to the second end of the branch part 142, and the second end of the first connecting part 19 being connected to the frame 10.

[0063] It can be understood that the grounding area 100 can be regarded as the ground terminal of the frame 10. When the charging current flows to the grounding area 100, it can flow to the ground terminal of the charging interface 13 through the grounding area 100 and the frame 10.

[0064] In some embodiments of this application, the first connection portion 19 may include any of the following: a metal spring, a BTB connector, or a circuit board. It is understood that the first connection portion 19 is conductive, meaning that charging current can flow from the frame 10 through the first connection portion 19 to the second end of the branch portion 142.

[0065] Thus, since the electronic device also has a first connecting part, the second end of the branch can be fixed to the frame through the first connecting part, and the charging current can flow directly from the battery through the main circuit board, the frame, the first connecting part, the branch and the main body to the ground area (i.e., the ground terminal) of the charging interface. This can increase the reliability of fixing the second end of the branch to the frame while reducing the impedance of the path of the charging current from the battery to the ground terminal of the charging interface.

[0066] In some embodiments of this application, the first connection portion 19 described above includes at least one of the following: a metal spring or a BTB connector.

[0067] In some embodiments of this application, when the first connecting portion 19 includes a metal spring, the number of such metal springs can be at least one. When the number of such metal springs is at least two, the at least two metal springs are evenly distributed between the second end of the branch portion 142 and the frame 10.

[0068] For example, as shown in Figures 8 and 9, the first connecting part includes at least two metal springs, such as metal spring 191 and metal spring 192, wherein the second ends of metal spring 191 and metal spring 192 are connected to the grounding area 100 of the frame 10, and the first ends of metal spring 191 and metal spring 192 are connected to the second end of the branch 142.

[0069] In this embodiment, since the metal spring can conduct electricity and can undergo elastic deformation under impact to reduce the damage caused by impact, fixing the second end of the branch 142 to the frame 10 by the metal spring can reduce the possibility of the second end of the branch 142 breaking off from the frame 10 under impact.

[0070] Therefore, since the second end of the branch can be securely fixed to the frame using a metal spring, the occurrence of the second end of the branch disconnecting from the frame can be reduced. And / or, since the second end of the branch can be securely fixed to the frame using a BTB connector, the occurrence of the second end of the branch disconnecting from the frame can be reduced.

[0071] The following example illustrates the impedance corresponding to the path of the charging current flowing from battery 12 to the ground terminal of charging interface 13 under this structure.

[0072] Referring to Figures 7 to 9, when charging the electronic device, the charging current can first flow from the charging interface 13 through the FPC 14 and the main circuit board 11 to the battery 12. Then, a portion of the charging current flows from the battery 12 through the main circuit board 11 and the main body 141 of the FPC 14 to the ground terminal of the charging interface 13. Another portion of the charging current flows from the battery 12 through the frame 10 to the ground terminal of the charging interface 13. Yet another portion of the charging current flows from the battery 12 through the main circuit board 11, the frame 10, the first connecting part 19, the branch part 142, and the main body 141 to the ground terminal of the charging interface 13. Compared to related technologies, this application embodiment adds a path 1 from the battery 12 through the main circuit board 11, the frame 10, the first connecting part 19, the branch part 142, and the main body 141 to the ground end of the charging interface 13. This path 1 is connected in parallel with path 2 from the battery 12 through the main circuit board 11 and the frame 10 to the ground end of the charging interface 13. Therefore, the impedance corresponding to these two paths can be: R metal10 =R metal11 / / R fpc2 , where R metal1 R is the impedance corresponding to path 2. fpc2 R is the impedance corresponding to path 1. metal0 Let be the equivalent impedances corresponding to path 1 and path 2. It can be understood that since path 1 and path 2 are connected in parallel, the equivalent impedances corresponding to path 1 and path 2 are less than the impedance corresponding to path 1 and less than the impedance corresponding to path 2.

[0073] Furthermore, path 3, which flows from battery 12 through the main circuit board 11 and the main body 141 of FPC 14 to the ground terminal of charging interface 13, is also connected in parallel with paths 1 and 2. Therefore, the impedance corresponding to these three paths can be: R gnd =R fpc / / R metal0 , where R gnd R is the equivalent impedance corresponding to path 1, path 2 and path 3. fpc R is the impedance corresponding to path 3. metal0The equivalent impedances corresponding to paths 1 and 2 are shown below. It can be understood that since paths 1, 2 and 3 are connected in parallel, the equivalent impedances corresponding to paths 1, 2 and 3 are less than the impedance corresponding to any one path. This reduces the impedance corresponding to the path through which the charging current flows from battery 12 to the ground terminal of charging interface 13, thereby improving the efficiency of charging electronic devices.

[0074] In another possible implementation of this application, as shown in FIG10, a grounding region 100 is provided on the frame 10; the electronic device provided in this application embodiment may further include: a second connecting part 20, the first end of which is connected to the second end of the branch part 142; a sub-circuit board 21, the first end of which is connected to the second end of the second connecting part 20; and a third connecting part 22, the first end of which is connected to the second end of the sub-circuit board 20, and the second end of which is connected to the grounding region 100.

[0075] In some embodiments of this application, the second connection portion 20 may include at least one of the following: a metal spring or a BTB connector. The third connection portion 22 may include at least one of the following: a metal spring or a BTB connector. The third connection portion 22 may be the same as or different from the second connection portion 20. It is understood that the second connection portion 20, the sub-circuit board 21, and the third connection portion 22 are all conductive, that is, the charging current can flow from the frame 10 through the second connection portion 20, the sub-circuit board 21, and the third connection portion 22 to the second end of the branch portion 142.

[0076] Thus, since the electronic device is provided with a second connecting part, a sub-circuit board, and a third connecting part, and the sub-circuit board is located between the second connecting part and the third connecting part, the connection between the second connecting part and the third connecting part can be strengthened by the sub-circuit board; and the charging current can flow directly from the frame through the second connecting part, the sub-circuit board, the third connecting part, the branch part, and the main body to the ground end of the charging interface; thereby, while increasing the reliability of the second end of the branch part being fixed to the frame, the impedance corresponding to the path of the charging current from the battery to the ground end of the charging interface can be reduced.

[0077] In some embodiments of this application, when the second connection portion 20 includes a metal spring, the number of the metal springs can be at least two, and the at least two metal springs are evenly distributed between the second end of the branch portion 142 and the sub-circuit board 21.

[0078] In this embodiment, since the metal spring can conduct electricity and can undergo elastic deformation under impact to reduce the damage caused by impact, fixing the second end of the branch 142 to the sub-circuit board 21 by the metal spring can reduce the possibility of the second end of the branch 142 breaking off from the sub-circuit board 21 under impact.

[0079] Therefore, since the second end of the branch can be securely fixed to the sub-circuit board using a metal spring, the occurrence of disconnection between the second end of the branch and the sub-circuit board can be reduced. And / or, since the second end of the branch can be securely fixed to the sub-circuit board using a BTB connector, the occurrence of disconnection between the second end of the branch and the sub-circuit board can be reduced.

[0080] In some embodiments of this application, when the third connection portion 22 includes a metal spring, the number of the metal springs can be at least two, and the at least two metal springs are evenly distributed between the sub-circuit board 21 and the frame 10.

[0081] In this embodiment, since the metal spring can conduct electricity and can undergo elastic deformation under impact to reduce the damage caused by impact, fixing the sub-circuit board 21 to the frame 10 by the metal spring can reduce the possibility of the sub-circuit board 21 breaking off from the frame 10 under impact.

[0082] Therefore, since the secondary circuit board can be securely fixed to the frame using metal spring clips, the occurrence of separation between the secondary circuit board and the frame can be reduced. And / or, since the secondary circuit board can be securely fixed to the frame using a BTB connector, the occurrence of separation between the secondary circuit board and the frame can be reduced.

[0083] For example, as shown in Figure 11, the second connection part is a BTB connector 200, and the third connection part is a metal spring 221. The first end of the BTB connector 221 is connected to the second end of the branch 142, and the second end of the BTB connector 221 is connected to the first end of the sub-circuit board 21. The first end of the metal spring 221 is connected to the second end of the sub-circuit board 21, and the second end of the metal spring 221 is connected to the grounding area 100.

[0084] The following example illustrates the impedance corresponding to the path of the charging current flowing from battery 12 to the ground terminal of charging interface 11 under this structure.

[0085] Referring to Figures 10 and 11, when charging the electronic device, the charging current can first flow from the charging interface 13 through the FPC 14 and the main circuit board 11 to the battery 12. Then, a portion of the charging current flows from the battery 12 through the main body 141 of the FPC 14 to the ground terminal of the charging interface 13, another portion of the charging current flows from the battery 12 through the FPC 14 and the frame 10 to the ground terminal of the charging interface 13, and yet another portion of the charging current flows from the battery 12 through the main circuit board 11, the frame 10, the third connecting part 22, the sub-circuit board 21, the second connecting part 20, the branch part 142, and the main body 141 to the ground terminal of the charging interface 13. Compared to related technologies, this application embodiment adds a path 4 that flows from the battery 12 through the main circuit board 11, the frame 10, the third connecting part 22, the sub-circuit board 21, the second connecting part 20, the branch part 142, and the main body part 141 to the ground end of the charging interface 13. This path 4 is connected in parallel with path 2 that flows from the battery 12 through the frame 10 to the ground end of the charging interface 13. Therefore, the impedance corresponding to these two paths can be: R metal12 =R metal11 / / R fpc3 , where R metal1 R is the impedance corresponding to path 2 above. fpc3 R is the impedance corresponding to path 4. metal2 Let be the equivalent impedances corresponding to paths 2 and 4. It can be understood that since paths 2 and 4 are connected in parallel, the equivalent impedances corresponding to paths 2 and 4 are less than the impedance corresponding to path 4, and less than the impedance corresponding to path 2.

[0086] Furthermore, path 3, which flows from battery 12 through the main body 141 of FPC 14 to the ground terminal of charging interface 13, is also connected in parallel with paths 2 and 4. Therefore, the impedance corresponding to these three paths can be: R gnd =R fpc / / R metal0 , where R gnd R is the equivalent impedance corresponding to path 2, path 3 and path 4 mentioned above. fpc R is the impedance corresponding to path 3. metal2 The equivalent impedances for paths 2 and 4 are shown below. It can be understood that since paths 2, 3, and 4 are connected in parallel, the equivalent impedances for paths 2, 3, and 4 are less than the impedance of any single path. This reduces the impedance of the path through which the charging current flows from the battery component to the ground of the charging interface, thus improving the efficiency of charging electronic devices.

[0087] In some embodiments of this application, the number of the above-mentioned branch portions 142 is at least two; wherein the at least two branch portions 142 are disposed on the same side of the main body portion 141.

[0088] In some embodiments of this application, the above-mentioned at least two branches 142 may be disposed on the side of the main body 141 away from the charging coil 18.

[0089] Thus, since multiple branches can be set up, and these multiple branches can be set up on the same side of the main body, on the one hand, the charging circuit can flow to the ground through more paths (i.e., the path from the battery through the main circuit board, the frame, each branch, and the main body to the charging interface), and these more paths are connected in parallel with the other two paths. Therefore, the impedance corresponding to the path of the charging current flowing from the battery to the ground of the charging interface can be further reduced, thereby further reducing the charging time of the electronic device and thus improving the charging efficiency of the electronic device.

[0090] This application provides an electronic device including a frame, a main circuit board and a battery disposed within the frame, and a charging interface on one side of the frame. The battery is disposed between the charging interface and the main circuit board, and the charging interface and the main circuit board are electrically connected via an FPC. The FPC includes a main body and a branch portion. The branch portion is disposed on one side of the main body. Both ends of the main body are electrically connected to the charging interface and the main circuit board, respectively. A first end of the branch portion is connected to the main body, and a second end of the branch portion is grounded. Since the FPC is divided into a main body and a branch, with the first end of the branch connected to the main body and the second end grounded, when charging the electronic device, the charging current can flow to the ground terminal of the charging interface through the paths of the battery, main circuit board, main body, and branch to the charging interface, and through the main circuit board, frame, and main body to the charging interface. Furthermore, the path from the battery through the main circuit board, frame, branch, and main body to the charging interface is connected in parallel with the other two paths. Therefore, the impedance corresponding to the path of the charging current flowing from the battery to the ground terminal of the charging interface can be reduced, thereby reducing the charging time of the electronic device and improving its charging efficiency.

[0091] In the description of the embodiments in this application, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0092] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An electronic device, comprising: A frame is provided, in which a main circuit board and a battery are disposed. A charging interface is provided on one side of the frame. The battery is disposed between the charging interface and the main circuit board. The charging interface and the main circuit board are electrically connected through a flexible printed circuit board (FPC). The FPC includes a main body and a branch. The branch is located on one side of the main body. The two ends of the main body are electrically connected to the charging interface and the main circuit board, respectively. The first end of the branch is connected to the main body, and the second end of the branch is grounded.

2. The electronic device according to claim 1, wherein, A grounding area is provided on the frame; the electronic device further includes: A first connecting part, the first end of which is connected to the second end of the branch, and the second end of which is connected to the grounding area.

3. The electronic device according to claim 2, wherein, The first connection part includes at least one of the following: a metal spring, a board-to-board BTB connector.

4. The electronic device according to claim 1, wherein, A grounding area is provided on the frame; the electronic device further includes: The second connecting part, wherein the first end of the second connecting part is connected to the second end of the branch part; A secondary circuit board, wherein a first end of the secondary circuit board is connected to a second end of the second connecting portion; The third connection part has a first end connected to the second end of the sub-circuit board and a second end connected to the grounding area.

5. The electronic device according to claim 1, wherein, The first end of the branch is connected to the main body near the charging interface.

6. The electronic device according to claim 1, wherein, The electronic device also includes: A charging coil is disposed between the charging interface and the main circuit board; The main body is bent in a direction away from the charging coil.

7. The electronic device according to claim 6, wherein, The charging coil and the branch are located on different sides of the main body.

8. The electronic device according to claim 1, wherein, The electronic device also includes: A reinforcing plate is disposed on the frame, and there is a gap between the reinforcing plate and the frame, with the second end of the branch located in the gap.

9. The electronic device according to claim 1, wherein, A copper-exposed section is provided at the second end of the branch.

10. The electronic device according to claim 1, wherein, The number of branches is at least two; At least two of the branches are located on the same side of the main body.

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