Wireless charging module, wireless charging device and electronic equipment

Abstract

This disclosure provides a wireless charging module, a wireless charging device, and an electronic device. The wireless charging module includes a coil assembly, a first circuit board, and a shielding structure. The first circuit board is used to connect to an external circuit board. The shielding structure includes a first shielding member and a second shielding member stacked along a first direction. A first groove is formed on the side of the first shielding member facing away from the second shielding member, and the side of the first shielding member facing the second shielding member surrounds the second shielding member to form a second groove. The coil assembly is housed within the first groove, and the first circuit board is housed within the second groove. This reduces the size and space occupied by the wireless charging module, resulting in a more compact layout.

Description

Technical Field

[0001] This disclosure relates to the field of wireless communication technology, and in particular to a wireless charging module, a wireless charging device, and an electronic device. Background Technology

[0002] With the rapid development of technology, electronic devices such as mobile phones and tablets have become widely used. Traditional electronic devices are usually charged via wired connections, which presents problems such as the need to adapt to different power cords and wear and tear on the charging interface. Therefore, wireless charging has emerged as a solution.

[0003] The wireless charging modules of some products are large and take up a lot of space, which increases the thickness of the product and reduces the user experience. Utility Model Content

[0004] This disclosure provides a wireless charging module, a wireless charging device, and an electronic device, which can reduce the size and space occupied by the wireless charging module, making the layout more compact.

[0005] This disclosure provides a wireless charging module, including:

[0006] Coil assembly;

[0007] The first circuit board is used to connect to an external circuit board; and

[0008] The shielding structure includes a first shielding member and a second shielding member stacked along a first direction. The first shielding member has a first groove on its side facing away from the second shielding member, and the side of the first shielding member facing the second shielding member surrounds the second shielding member to form a second groove. The coil assembly is accommodated in the first groove, and the first circuit board is accommodated in the second groove.

[0009] Furthermore, on a plane perpendicular to the first direction, the projection of the second shielding member covers the first groove; and / or

[0010] The first groove extends through the first shielding member along the first direction.

[0011] Furthermore, on a plane perpendicular to the first direction, the projection of the first shielding member overlaps the projection of the second shielding member; in a direction perpendicular to the first direction, the second shielding member includes at least one side end face, which is not flush with the end face of the first shielding member, and surrounds the side of the first shielding member facing the second shielding member to form the second groove portion.

[0012] Furthermore, there are two side end faces, located on both sides of the second shielding member along the second direction, the second direction being perpendicular to the first direction; the two side end faces and the side of the first shielding member facing the second shielding member respectively enclose and form a second groove portion; there are two first circuit boards, each accommodated in one of the two second groove portions.

[0013] Furthermore, in the second direction, the length of the second shield is greater than or equal to the diameter of the coil assembly, and the second direction is perpendicular to the first direction; and / or

[0014] In a second direction, the length of the second shield is greater than or equal to the length of the first circuit board, and the second direction is perpendicular to the first direction; and / or

[0015] The first circuit board extends beyond the second recess along a second direction perpendicular to the first direction; and / or

[0016] In the first direction, the thickness of the coil assembly is not greater than the depth of the first groove; and / or

[0017] In the first direction, the thickness of the first circuit board is not greater than the depth of the second groove.

[0018] Furthermore, both the first shielding component and the second shielding component are nanocrystalline plates.

[0019] Furthermore, the coil assembly includes a coil and a second circuit board connected to the coil. The coil is housed within the first recess, and the second circuit board extends out of the first recess along a third direction and is connected to the first circuit board or an external circuit board. The third direction is perpendicular to the first direction.

[0020] This disclosure provides a wireless charging device, which includes the wireless charging module described above.

[0021] This disclosure provides an electronic device that includes the wireless charging module described above.

[0022] Furthermore, it also includes a motherboard structure and a small board structure, the motherboard structure and the small board structure being located on opposite sides of the wireless charging module, with one end of the first circuit board connected to the motherboard structure and the other end connected to the small board structure.

[0023] The wireless charging module disclosed herein includes a shielding structure, which includes a first shielding member and a second shielding member stacked along a first direction. The first shielding member and the second shielding member can achieve magnetic field shielding of the coil assembly and the first circuit board, and also play a role in magnetic conduction. While ensuring the magnetic field shielding and magnetic conduction effects, the coil assembly is accommodated in a first recess and the first circuit board is accommodated in a second recess, which reduces the size and space occupied by the wireless charging module, making the layout more compact and allowing the thickness of the applied product to be set thinner.

[0024] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

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

[0026] Figure 1 The diagram shown is a schematic diagram of a wireless charging module and its external circuit board according to an exemplary embodiment of the present disclosure.

[0027] Figure 2 The image shown is a cross-sectional view of a wireless charging module according to an exemplary embodiment of this disclosure. Detailed Implementation

[0028] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0029] To better understand the technical solutions of this disclosure, the wireless charging module, wireless charging device, and electronic device of this disclosure will be described in detail below with reference to the accompanying drawings. Unless otherwise specified, the features in the following embodiments and implementations can be combined with each other.

[0030] This disclosure provides a wireless charging module that enables wireless charging functionality. Figure 1 The diagram shown is a schematic of a wireless charging module and an external circuit board according to an exemplary embodiment of the present disclosure. Figure 2 The image shown is a cross-sectional view of a wireless charging module according to an exemplary embodiment of this disclosure. See also... Figure 1 and Figure 2 As shown, the wireless charging module 10 includes a coil assembly 11, a first circuit board 12, and a shielding structure 13.

[0031] The first circuit board 12 is used to connect to the external circuit board. The first circuit board 12 can be a flexible printed circuit (FPC), which has high wiring density and good bending flexibility, which is beneficial for the layout of the wireless charging module 10. In one embodiment, the external circuit board can refer to the main board structure 14 and the small board structure 15 of the electronic device or wireless charging device, and the first circuit board 12 can be connected between the main board structure 14 and the small board structure 15.

[0032] The shielding structure 13 includes a first shielding member 16 and a second shielding member 17 stacked along a first direction X. The surfaces of the first shielding member 16 and the second shielding member 17 facing each other can be connected by adhesive. The first shielding member 16 and the second shielding member 17 can achieve magnetic field shielding of the coil assembly 11 and the first circuit board 12, and also serve as magnetic conductors. In one embodiment, the first shielding member 16 and the second shielding member 17 are both nanocrystalline plates, which can be, but are not limited to, circular, square, polygonal, irregular, etc. Nanocrystalline plates have high magnetic permeability, which can effectively isolate magnetic shielding and reduce the absorption of signal magnetic fields by surrounding metal materials. A first groove 18 is formed on the side of the first shielding member 16 facing away from the second shielding member 17, and the side of the first shielding member 16 facing the second shielding member 17 surrounds the second shielding member 17 to form a second groove 19. The bottom surface of the first groove 18 can be through or not. In one embodiment, the first groove 18 penetrates the first shielding member 16 along the first direction X. The coil assembly 11 is housed within the first recess 18, and the first circuit board 12 is housed within the second recess 19. This effectively reduces the size of the wireless charging module 10 in the first direction X, reduces the thickness of the wireless charging module 10, and makes the layout more compact.

[0033] The wireless charging module 10 disclosed herein includes a shielding structure 13. The shielding structure 13 includes a first shielding member 16 and a second shielding member 17 stacked along a first direction X. The first shielding member 16 and the second shielding member 17 can achieve magnetic field shielding of the coil assembly 11 and the first circuit board 12, and also play a role in magnetic conduction. While ensuring the magnetic field shielding and magnetic conduction effects, the coil assembly 11 is accommodated in the first groove portion 18 and the first circuit board 12 is accommodated in the second groove portion 19, which reduces the volume and space occupied by the wireless charging module 10, making the layout more compact. This allows for thinner products, such as thinner electronic devices or wireless charging devices.

[0034] In one embodiment, the projection of the second shield 17 covers the first groove 18 on a plane perpendicular to the first direction X. This ensures that the first shield 16 and the second shield 17 can surround the coil assembly 11, guaranteeing the magnetic field shielding and magnetic conduction effects of the first shield 16 and the second shield 17.

[0035] In one embodiment, in the second direction Y, the length of the second shield 17 is greater than or equal to the diameter of the coil assembly 11. This results in good magnetic field shielding and magnetic conductivity for the second shield 17.

[0036] In one embodiment, the projection of the first shield 16 overlaps the projection of the second shield 17 in a plane perpendicular to the first direction X. The second shield 17 includes at least one side end face 20 in the direction perpendicular to the first direction X. In one embodiment, the second shield 17 includes two side end faces 20 located on both sides of the second shield 17 along the second direction Y, and two side end faces 20 located on both sides of the second shield 17 along the third direction Z. The first direction X, the second direction Y, and the third direction Z are perpendicular to each other. The side end faces 20 are not flush with the end faces of the first shield 16 and enclose the side of the first shield 16 facing the second shield 17 to form a second recess 19. Thus, the first circuit board 12 can be partially accommodated within the second recess 19 and partially located outside the second recess 19, allowing for a larger first circuit board 12 while ensuring a reduction in the thickness of the wireless charging module 10.

[0037] In this embodiment, there are two side faces 20, located on both sides of the second shielding member 17 along the second direction Y. The second direction Y is perpendicular to the first direction X. The two side faces 20 and the side of the first shielding member 16 facing the second shielding member 17 respectively form a second recess 19. There are two first circuit boards 12, which are respectively accommodated in the two second recesses 19. This allows for the accommodation of two first circuit boards 12, making the layout of the wireless charging module 10 more compact.

[0038] In one embodiment, the first circuit board 12 extends beyond the second recess 19 along the second direction Y. This allows for the selection of a larger first circuit board.

[0039] In one embodiment, in the second direction Y, the length of the second shield 17 is greater than or equal to the length of the first circuit board 12.

[0040] In one embodiment, in the first direction X, the thickness of the coil assembly 11 is no greater than the depth of the first recess 18. This allows the coil assembly 11 to be completely accommodated within the first recess 18, effectively reducing the thickness of the wireless charging module 10.

[0041] In one embodiment, in the first direction X, the thickness of the first circuit board 12 is no greater than the depth of the second recess 19. This allows the first circuit board 12 to be completely accommodated within the second recess 19, effectively reducing the thickness of the wireless charging module 10.

[0042] In one embodiment, the coil assembly 11 includes a coil 21 and a second circuit board 22 connected to the coil 21, wherein the second circuit board 22 may be a flexible circuit board. The coil 21 is housed within a first recess 18, and the second circuit board 22 extends out of the first recess 18 along a third direction Z and is connected to the first circuit board 12 or an external circuit board, wherein the third direction Z is perpendicular to the first direction X.

[0043] In one embodiment, one end of the second circuit board 22 is connected to the coil 21, and the other end is connected to the first circuit board 12 or an external circuit board. The external circuit board can refer to the main board structure 14 or the small board structure 15. Figure 1 In the embodiment shown, one end of the second circuit board 22 is connected to the coil 21, and the other end is connected to the small board structure 15.

[0044] In this embodiment, the first direction X can be the thickness direction of the wireless charging module 10. The second direction Y can be the extension direction of the first circuit board 12 of the wireless charging module 10. The third direction Z can be the arrangement direction of the two first circuit boards 12.

[0045] This disclosure provides a wireless charging device, which includes a wireless charging module. It should be noted that the descriptions of the wireless charging module in the above embodiments and implementations are also applicable to the wireless charging devices of this disclosure. When the wireless charging module is applied to the wireless charging device, the coil can serve as a transmitting coil, and the second circuit board is used to supply alternating current to the coil.

[0046] This disclosure provides an electronic device, which may include, but is not limited to, mobile phones, tablets, and other devices. The electronic device includes a wireless charging module. It should be noted that the descriptions of the wireless charging module in the above embodiments and implementations are also applicable to the wireless charging devices of this disclosure. When the wireless charging module is applied to an electronic device, the coil can serve as a receiving coil, and the second circuit board is used to transmit the current received by the coil to the battery of the electronic device.

[0047] In one embodiment, the electronic device further includes a motherboard structure and a small board structure, which are located on opposite sides of the wireless charging module. One end of a first circuit board is connected to the motherboard structure, and the other end is connected to the small board structure. Thus, the first circuit board enables electrical connection and signal transmission between the motherboard structure and the small board structure.

[0048] 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 wireless charging module, comprising: include: Coil assembly; The first circuit board is used to connect to the external circuit board; and The shielding structure includes a first shielding member and a second shielding member stacked along a first direction. The first shielding member has a first groove on its side facing away from the second shielding member, and the side of the first shielding member facing the second shielding member surrounds the second shielding member to form a second groove. The coil assembly is accommodated in the first groove, and the first circuit board is accommodated in the second groove.

2. The wireless charging module of claim 1, wherein, On a plane perpendicular to the first direction, the projection of the second shielding member covers the first groove; and / or The first groove extends through the first shielding member along the first direction.

3. The wireless charging module of claim 1, wherein, On a plane perpendicular to the first direction, the projection of the first shielding member overlaps the projection of the second shielding member; in a direction perpendicular to the first direction, the second shielding member includes at least one side end face, which is not flush with the end face of the first shielding member, and surrounds the side of the first shielding member facing the second shielding member to form the second groove portion.

4. The wireless charging module of claim 3, wherein, There are two side end faces, located on both sides of the second shielding member along the second direction, which is perpendicular to the first direction; the two side end faces and the side of the first shielding member facing the second shielding member respectively enclose and form a second groove portion; there are two first circuit boards, which are respectively accommodated in the two second groove portions.

5. The wireless charging module of claim 1, wherein, In the second direction, the length of the second shield is greater than or equal to the diameter of the coil assembly, and the second direction is perpendicular to the first direction; and / or In the second direction, the length of the second shield is greater than or equal to the length of the first circuit board, and the second direction is perpendicular to the first direction; and / or The first circuit board extends beyond the second recess along a second direction, the second direction being perpendicular to the first direction; and / or In the first direction, the thickness of the coil assembly is not greater than the depth of the first groove; and / or In the first direction, the thickness of the first circuit board is not greater than the depth of the second groove.

6. The wireless charging module of claim 1, wherein, Both the first shielding component and the second shielding component are nanocrystalline plates.

7. The wireless charging module of claim 1, wherein, The coil assembly includes a coil and a second circuit board connected to the coil. The coil is housed within the first recess. The second circuit board extends out of the first recess along a third direction and is connected to the first circuit board or an external circuit board. The third direction is perpendicular to the first direction.

8. A wireless charging device, comprising: The wireless charging device includes the wireless charging module as described in any one of claims 1-7.

9. An electronic device, comprising: The electronic device includes the wireless charging module as described in any one of claims 1-7.

10. The electronic device of claim 9, wherein, It also includes a motherboard structure and a small board structure, which are located on opposite sides of the wireless charging module. One end of the first circuit board is connected to the motherboard structure and the other end is connected to the small board structure.

Images