Circuit board assembly and electronic equipment

Abstract

The utility model relates to a circuit board assembly and electronic equipment, the circuit board assembly comprises a main body and a charging coil, the main body is provided with an accommodating area, the charging coil is arranged in the accommodating area, an outgoing line of the charging coil is arranged on the main body, and the main body and the charging coil are arranged on the same plane. According to the invention, the circuit board is provided with the accommodating area for accommodating the charging coil, so that the main body and the charging coil can be arranged in the same plane, thereby reducing the stacking thickness between the main body and the charging coil, facilitating the compact design of the internal structure of the electronic equipment, facilitating the thinning of the whole machine, and improving the reliability of the electronic equipment. And the portability of the electronic equipment and the use experience of the user are improved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of electronic devices, and in particular, to a circuit board assembly and an electronic device. BACKGROUND

[0002] At present, with the continuous progress of electronic device technology, the design direction of electronic devices gradually develops towards the trend of integration and thinness. In the related technology, in order to realize the charging function, it is usually necessary to set a charging coil inside the electronic device. However, since the main body of the circuit board assembly and the charging coil are stacked along the thickness direction of the electronic device, the thickness of the electronic device is relatively large, which is not conducive to the thin design of the whole machine, and the portability of the electronic device and the user's use experience are also poor. SUMMARY

[0003] In order to overcome the problems in the related art, the present disclosure provides a circuit board assembly and an electronic device.

[0004] According to a first aspect of the present disclosure, a circuit board assembly is provided, comprising:

[0005] a main body, provided with a receiving area;

[0006] a charging coil, disposed in the receiving area, an outgoing line of the charging coil being disposed on the main body;

[0007] wherein the main body and the charging coil are disposed in the same plane.

[0008] In a possible implementation, the main body is provided with a first connection end and a second connection end, and the outgoing line of the charging coil extends to one of the first connection end and the second connection end.

[0009] The main body is provided with a signal line, and the signal line extends from the first connection end to the second connection end.

[0010] In a possible implementation, the signal line is disposed on the outer side of the charging coil, and part of the wire of the signal line is parallel to part of the wire of the outgoing line.

[0011] In a possible implementation, the signal line includes a power signal line and a communication signal line, and both the power signal line and the communication signal line extend from the first connection end to the second connection end.

[0012] In a possible implementation, the first connection end is provided with a first connector, and the second connection end is provided with a second connector.

[0013] The outgoing line includes an output terminal and an input terminal, and the output terminal and the input terminal are electrically connected to the first connector or the second connector at the same time.

[0014] The signal line is electrically connected with the first connector and the second connector respectively.

[0015] In a possible implementation, the first connector and the second connector comprise a board-to-board connector; and / or,

[0016] The main body is a flexible circuit board.

[0017] In a possible implementation, the shape of the charging coil comprises one of a circle, an ellipse, a racetrack, a square, and a rectangle.

[0018] In a possible implementation, the main body comprises a first board and a second board arranged in a stack, and the accommodation region comprises a first accommodation region of the first board and a second accommodation region of the second board.

[0019] The charging coil comprises a first layer and a second layer arranged in a stack, the first layer and the second layer are electrically connected, the first layer is arranged in the first accommodation region, and the second layer is arranged in the second accommodation region.

[0020] According to a second aspect of the present disclosure, an electronic device is provided, comprising a first circuit board, a second circuit board, and a circuit board assembly as described in the first aspect of the present disclosure, the circuit board assembly is electrically connected with the first circuit board and the second circuit board respectively.

[0021] In a possible implementation, the main body of the circuit board assembly extends along a length direction of the electronic device, the first circuit board is arranged at a top of the electronic device along the length direction, and the second circuit board is arranged at a bottom of the electronic device along the length direction.

[0022] The first connector of the circuit board assembly is electrically connected with the first circuit board, and the second connector of the circuit board assembly is electrically connected with the second circuit board.

[0023] The technical scheme provided by the embodiments of the present disclosure can have the following beneficial effects: the present disclosure provides the accommodation region for accommodating the charging coil on the circuit board, so that the main body and the charging coil can be arranged in the same plane, thereby reducing the stacking thickness between the main body and the charging coil, facilitating the compact design of the internal structure of the electronic device, facilitating the thinning of the whole machine, and improving the portability of the electronic device and the user experience.

[0024] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0025] The accompanying drawings, which are incorporated herein and form a part of the specification, illustrate embodiments consistent with the present disclosure and, together with the description, further serve to explain the principles of the present disclosure.

[0026] Figure 1 is a sectional view of a circuit board assembly in the related art.

[0027] Figure 2 is a sectional view of a circuit board assembly according to an exemplary embodiment.

[0028] Figure 3 is a structural view of a circuit board assembly according to an exemplary embodiment.

[0029] Figure 4 is a structural view of a circuit board assembly according to another exemplary embodiment.

[0030] Figure 5 is a structural view of a circuit board assembly according to yet another exemplary embodiment. DETAILED DESCRIPTION

[0031] The exemplary embodiments will be described in detail herein with reference to the accompanying drawings. When the description below refers to accompanying drawings, a detailed description of like elements is not repeated for the sake of brevity. The following exemplary embodiments described in the detailed description section are examples in which the inventive concept can be practiced. Other embodiments can be utilized, and structural and operational changes can be made without departing from the scope of the present disclosure.

[0032] At present, with the continuous progress of electronic device technology, the design direction of electronic devices is gradually developing towards integration and thinness. In the related art, in order to realize the charging function, it is usually necessary to arrange a charging coil inside the electronic device. As shown in Figure 1 , the circuit board assembly includes a main body 10' and a charging coil 20', and the main body 10' and the charging coil 20' are arranged in a stacked manner along the thickness direction of the electronic device (i.e. the up-down direction shown in Figure 1 , due to the stacked arrangement of the main body 10' and the charging coil 20' of the circuit board assembly along the thickness direction of the electronic device, the thickness of the electronic device is relatively large, which is not conducive to the thin design of the whole machine, and the portability of the electronic device and the user's use experience are also poor.

[0033] To solve the above technical problems, the present disclosure provides a circuit board assembly and an electronic device. By arranging a receiving area for accommodating a charging coil on a circuit board, the main body and the charging coil can be arranged in the same plane, thereby reducing the stacking thickness between the main body and the charging coil, facilitating the compact design of the internal structure of the electronic device, facilitating the thinning of the entire machine, and improving the portability of the electronic device and the user experience.

[0034] According to an exemplary embodiment, as shown in Figures 2-5 The present disclosure provides a circuit board assembly, which includes a main body 10 and a charging coil 20. The main body 10 is a circuit board, which can be a flexible circuit board, a printed circuit board, another type of circuit board, or a combination of several types. The charging coil 20 can be a wireless charging coil. The main body 10 is provided with a receiving area 11 for accommodating the charging coil 20. The receiving area 11 is formed by hollowing out the main body 10. The size of the receiving area 11 is greater than that of the charging coil 20. The shape of the receiving area 11 can be the same as or different from that of the charging coil 20. The charging coil 20 is arranged in the receiving area 11, and the lead wire 21 of the charging coil 20 is arranged on the main body 10.

[0035] The main body 10 and the charging coil 20 are arranged in the same plane, that is, they are not stacked in the thickness direction. Therefore, by avoiding the stacking of the main body 10 and the charging coil 20, the thickness of the entire circuit board assembly is reduced. The thickness of the main body 10 and the charging coil 20 can be the same or different. When the thickness of the main body 10 is greater than or equal to that of the charging coil 20, the charging coil 20 can be completely accommodated in the receiving area 11 of the main body 10, and the thickness of the entire circuit board assembly is the thickness of the main body 10. When the thickness of the main body 10 is less than that of the charging coil 20, the charging coil 20 is at least partially accommodated in the receiving area 11 of the main body 10, and the thickness of the entire circuit board assembly is the sum of the thickness of the main body 10 and the thickness of the charging coil 20 protruding from the main body 10. Therefore, regardless of whether the thickness of the main body 10 and the charging coil 20 is the same or different, compared with the arrangement in which the main body 10 and the charging coil 20 are stacked, the thickness of the entire circuit board assembly can be reduced. When the main body 10 and the charging coil 20 are stacked, the thickness of the circuit board assembly is 0.4-0.5 mm. After adopting the technical solution of the present disclosure, the thickness can be reduced by about 0.15 mm, which facilitates the thinning of the entire electronic device.

[0036] In the present disclosure, by arranging a receiving area for accommodating a charging coil on a circuit board, the main body and the charging coil can be arranged in the same plane, thereby reducing the stacking thickness between the main body and the charging coil, facilitating the compact design of the internal structure of the electronic device, facilitating the thinning of the entire machine, and improving the portability of the electronic device and the user experience.

[0037] In some embodiments, the main body 10 is provided with a first connection end 13 and a second connection end 14, and the lead wire 21 of the charging coil 20 extends to one of the first connection end 13 and the second connection end 14. As shown in the figure, the first connection end 13 and the second connection end 14 are respectively located at two ends of the main body 10, and the main body 10 is further provided with a signal line 12 extending from the first connection end 13 to the second connection end 14. Figures 2-5

[0038] In some embodiments, the signal line 12 is arranged outside the charging coil 20. Specifically, the signal line 12 can be arranged outside the accommodation area 11 on the main body 10, so as to avoid interference between the signal line 12 and the charging coil 20. Figures 3-5 For example, as shown in the figure, the signal line 12 can be arranged on the left and right sides of the charging coil 20.

[0039] In one example, as shown in the figure, part of the signal line 12 is arranged in parallel with part of the lead wire 21 of the charging coil 20. Of course, it can be understood that part of the signal line 12 and part of the lead wire 21 can also have a certain angle, as long as it does not affect the normal work of other electronic devices. Those skilled in the art can arrange the signal line 12 and the lead wire 21 according to actual needs, and the present disclosure does not have too many limitations on this. Figures 3-5

[0040] In some embodiments, the signal line 12 includes a power signal line 121 and a communication signal line 122. As shown in the figure, the power signal line 121 and the communication signal line 122 both extend from the first connection end 13 to the second connection end 14, wherein the power signal line is used to transmit a power signal, and the communication signal line 122 is used to transmit other signals in addition to the power signal, such as communication signals, sensing signals, control signals, etc. Figures 3-5

[0041] In some embodiments, the power signal line 121 and the communication signal line 122 are located on both sides of the charging coil 20. Arranging the power signal line 121 and the communication signal line 122 on both sides of the charging coil 20 can effectively prevent interference between the power signal and the communication signal of the circuit board assembly, and improve the electrical connection and signal connection reliability of the circuit board assembly.

[0042] In one example, as shown in the figure, the power signal line 121 and the communication signal line 122 are arranged on the left and right sides of the charging coil 20. Figures 3-5 ​​​Taking the orientation shown as an example, the communication signal line 122 is located to the left of the charging coil 20, and the power signal line 121 is located to the right of the charging coil 20. In another example, the power signal line 121 can also be located to the left of the charging coil 20, and the communication signal line 122 can be located to the right of the charging coil 20. Those skilled in the art can adjust the wiring positions of the power signal line 121 and the communication signal line 122 according to actual needs, and this embodiment does not impose excessive limitations on this.

[0043] In some embodiments, signal line 12 further includes a ground signal line 123. For example... Figures 3-5 As shown, the ground signal line 123 is located on the right side of the charging coil 20, and is situated between the charging coil 20 and the power signal line 121. The ground signal line 123 can be electrically connected to the ground terminal of other circuit boards or the mid-frame of electronic devices to ground the main body 10.

[0044] In some embodiments, the first connection end 13 is provided with a first connector 31, and the second connection end 14 is provided with a second connector 32. The signal line 12 is electrically connected to the first connector 31 and the second connector 32 respectively. The lead 21 of the charging coil 20 includes an output terminal 211 and an input terminal 212. The output terminal 211 and the input terminal 212 are simultaneously electrically connected to the first connector 31, or the output terminal 211 and the input terminal 212 are simultaneously electrically connected to the second connector 32.

[0045] In some embodiments, the main body 10 is configured as a flexible circuit board, and the first connection end 13 and the second connection end 14 can be electrically connected to other circuit boards or other connection ends of the electronic device, such as to a flexible circuit board, a printed circuit board, other types of circuit boards or a combination of several of these circuit boards, or to connection ends such as a power supply end or a ground end.

[0046] In some embodiments, the first connector 31 and the second connector 32 include board-to-board connectors. That is, the body 10 is configured as a circuit board, such as a flexible circuit board, a printed circuit board, other types of circuit boards, or a combination thereof, and the first connection end 13 and the second connection end 14 are electrically connected to other circuit boards of the electronic device, respectively.

[0047] In some embodiments, the first connector and the second connector include board-to-board connectors, and the body 10 is configured as a flexible circuit board. The first connection end 13 and the second connection end 14 are electrically connected to other circuit boards of the electronic device, such as flexible circuit boards, printed circuit boards, other types of circuit boards, or several of them.

[0048] In some embodiments, the main body 10 is electrically connected to a first circuit board (not shown) and a second circuit board (not shown) of the electronic device, respectively. For example... Figures 2-5 As shown, the first connection end 13 of the main body 10 is electrically connected to the first circuit board, and the second connection end 14 is electrically connected to the second circuit board. The first circuit board can be the motherboard of the electronic device, and the second circuit board can be the sub-board of the electronic device. The sub-board is used to set up various functional modules such as communication module, touch module, and display module. The motherboard is used to set up power supply (not shown in the figure) and processor (not shown in the figure). The various functional modules of the sub-board are electrically connected to the motherboard through the main body 10, so that the processor of the motherboard can control the various functional modules.

[0049] In one example, the lead 21 of the charging coil 20 is electrically connected to the first connection terminal 13. The charging coil 20 is electrically connected to the first connection terminal 13 via the lead 21, thereby connecting to the first circuit board, i.e., the motherboard, to enable power supply and control of the charging coil 20, ensuring the normal operation of the charging function.

[0050] Of course, it is understood that in some embodiments, the first circuit board can be configured as a sub-board of the electronic device and the second circuit board as the main board of the electronic device. In this case, the lead wire 21 of the charging coil 20 is electrically connected to the second connection terminal 14, thereby realizing the electrical connection between the charging coil 20 and the main board. The lead wire 21 can be electrically connected to the first connection terminal 13 or the second connection terminal 14, as long as it is ensured that the port connected to the lead wire 21 is electrically connected to the main board of the electronic device. Those skilled in the art can perform wiring according to actual needs, and this disclosure does not impose too many restrictions on this aspect.

[0051] In some embodiments, the charging coil 20 may have different winding shapes. In one example, such as... Figure 3 As shown, the charging coil 20 is circular in shape. In another example, as... Figure 4 As shown, the charging coil 20 is rectangular in shape. In yet another example, as... Figure 5 As shown, the charging coil 20 is racetrack-shaped, with a rectangular middle section and semicircular ends. Of course, it is understood that the winding shape of the charging coil 20 can also be elliptical, square, or other irregular shapes. This embodiment does not impose excessive restrictions on this, as long as the design requirements for the inductance, resistance, number of turns, etc., of the charging coil 20 are met. Those skilled in the art can design flexibly according to actual needs.

[0052] In some embodiments, the circuit board assembly can be a two-layer or three-layer structure, thereby saving the area of ​​the traces through reasonable design in the thickness direction. The number of layers of the circuit board assembly can be selected by those skilled in the art according to actual needs.

[0053] In one example, the circuit board assembly has a two-layer structure. The main body 10 includes a first board (not shown) and a second board (not shown) stacked together. The accommodating region 11 includes a first accommodating region (not shown) located on the first board and a second accommodating region (not shown) located on the second board. The charging coil 20 includes a first layer (not shown) and a second layer (not shown) stacked together, electrically connected. The first layer is disposed in the first accommodating region, and the second layer is disposed in the second accommodating region. The circuit traces of the first board and the second board can be the same, partially the same, or completely different. Those skilled in the art can plan the wiring according to the number of connected electronic components and the complexity of the circuit; this disclosure does not impose excessive limitations in this regard.

[0054] In one example, the circuit board assembly has a three-layer structure. The main body 10 includes a first board, a second board, and a third board (not shown) stacked together. The accommodating region 11 includes a first accommodating region on the first board, a second accommodating region on the second board, and a third accommodating region on the third board (not shown). The charging coil 20 includes a first layer, a second layer, and a third layer (not shown) stacked together. The first and second layers are electrically connected, and the second and third layers are electrically connected. The first layer is disposed in the first accommodating region, the second layer in the second accommodating region, and the third layer in the third accommodating region. The circuit traces of the first board, the second board, and the third board can be the same, partially the same, or completely different; this embodiment does not impose excessive limitations on this.

[0055] In some embodiments, the circuit board assembly further includes an isolation layer (not shown in the figure). The isolation layer is disposed on the side of the main body 10 away from the charging coil 20 and is positioned corresponding to the charging coil 20. The isolation layer is used to isolate the circuit board assembly from other electronic devices and to provide a certain degree of protection for the circuit board assembly. The isolation layer can be made of nanocrystalline material, which refers to material composed of crystals with a nanoscale size (1-10 nm). Due to the special composition and structure of nanocrystalline materials, their performance is significantly improved compared to traditional materials, especially with advantages such as ultra-hardness and supermodulus effect, and they are widely used in high-precision circuit structures.

[0056] In some embodiments, the circuit board assembly further includes a protective layer (not shown in the figure). The protective layer may include a first protective layer and a second protective layer, and the protective layer is an insulating material such as silicon oxide, silicon nitride, or polyethylene. The charging coil 20 can be formed into a multi-turn structure by etching the substrate. The inner ring of the charging coil 20 is provided with the first protective layer, and the second protective layer is provided between the charging coil 20 and the main body 10. That is, the second protective layer at least partially covers the accommodating area 11. By providing the protective layer, the circuit board assembly can be electrically isolated and protected, avoiding mutual interference between the circuit board assembly and other electronic components inside the electronic device, which is beneficial to improving the stability of the circuit board assembly.

[0057] According to an exemplary embodiment, such as Figures 2-5 As shown, this disclosure provides an electronic device (not shown in the figure). The electronic device may be, for example, a mobile terminal, laptop, tablet, smartwatch, smart bracelet, Bluetooth headset, or other electronic device with charging functionality. The electronic device includes a first circuit board, a second circuit board, and the circuit board assembly described in the above embodiment. The circuit board assembly is electrically connected to the first and second circuit boards, respectively. The circuit board assembly includes a main body 10 and a charging coil 20. The main body 10 has a receiving area 11 for accommodating the charging coil 20. The receiving area 11 is formed by hollowing out the main body 10. The charging coil 20 is disposed within the receiving area 11, and the lead wire 21 of the charging coil 20 is disposed on the main body 10. The main body 10 and the charging coil 20 are coplanar, thereby reducing the stacking thickness between the main body and the charging coil. This facilitates a compact design of the internal structure of the electronic device, makes it easier to achieve overall thinning, and improves the portability and user experience of the electronic device.

[0058] In some embodiments, the body 10 of the circuit board assembly extends along the length direction of the electronic device, and the first circuit board is disposed at the top of the electronic device along the length direction, i.e. Figures 3-5 As shown above, the second circuit board is positioned at the bottom of the electronic device along its length, that is... Figures 3-5 As shown below, the first connector 31 of the circuit board assembly is electrically connected to the first circuit board, and the second connector 32 of the circuit board assembly is electrically connected to the second circuit board.

[0059] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the embodiments disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the claims.

[0060] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A circuit board assembly, characterized by include: The main body has a storage area; A charging coil is disposed within the accommodating area, and the lead wire of the charging coil is disposed in the main body; The main body and the charging coil are arranged on the same plane.

2. The circuit board assembly of claim 1, wherein, The main body is provided with a first connection end and a second connection end, and the lead wire of the charging coil extends to one of the first connection end and the second connection end; The main body is provided with a signal line, which extends from the first connection end to the second connection end.

3. The circuit board assembly of claim 2, wherein, The signal line is located outside the charging coil, and a portion of the signal line's routing is parallel to a portion of the lead-out line's routing.

4. The circuit board assembly of claim 2, wherein, The signal lines include power signal lines and communication signal lines, both of which extend from the first connection end to the second connection end.

5. The circuit board assembly of claim 2, wherein, The first connecting end is provided with a first connector, and the second connecting end is provided with a second connector; The lead wire includes an output terminal and an input terminal, and the output terminal and the input terminal are simultaneously electrically connected to the first connector or the second connector. The signal lines are electrically connected to the first connector and the second connector, respectively.

6. The circuit board assembly of claim 5, wherein, The first connector and the second connector include board-to-board connectors; and / or, The main body is configured as a flexible circuit board.

7. The circuit board assembly of claim 1, wherein, The shape of the charging coil includes one of the following: circular, elliptical, racetrack-shaped, square, and rectangular.

8. The circuit board assembly of any one of claims 1 to 6, wherein, The main body includes a first plate and a second plate stacked together, and the receiving area includes a first receiving area located on the first plate and a second receiving area located on the second plate; The charging coil includes a first layer and a second layer stacked together, the first layer and the second layer being electrically connected, the first layer being disposed in the first accommodating region, and the second layer being disposed in the second accommodating region.

9. An electronic device, comprising: It includes a first circuit board, a second circuit board, and a circuit board assembly as described in any one of claims 1 to 8, wherein the circuit board assembly is electrically connected to the first circuit board and the second circuit board, respectively.

10. The electronic device of claim 9, wherein, The main body of the circuit board assembly extends along the length direction of the electronic device, the first circuit board is disposed at the top of the electronic device along the length direction, and the second circuit board is disposed at the bottom of the electronic device along the length direction. The first connector of the circuit board assembly is electrically connected to the first circuit board, and the second connector of the circuit board assembly is electrically connected to the second circuit board.

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