Coil module, receiving device and wireless charging equipment

Abstract

The embodiment of the utility model relates to the technical field of wireless charging, and particularly discloses a coil module which comprises a base material, a first printed circuit layer and a second printed circuit layer, and the base material is oppositely provided with a first surface and a second surface; the first printed circuit layer is arranged on the first surface and comprises a coil; the second printed circuit layer is arranged on the second surface, the second printed circuit layer comprises at least part of a switching circuit, and the switching circuit is connected with the coil so as to switch the coil. According to the embodiment of the utility model, the production process can be simplified.

Description

TECHNICAL FIELD

[0001] The embodiment of the utility model relates to wireless charging technical field, in particular to a coil module, receiving device and wireless charging device. BACKGROUND

[0002] With the wide application of consumer electronics and the change of the charging scene demand of such products, people's requirements for the convenience, timeliness and versatility of charging are higher and higher, and the traditional charging mode through the interface cannot meet various charging demands, so the non-contact wireless charging becomes a new trend, and wireless charging is more and more widely used in terminal products.

[0003] In the existing terminal device, the coil needs to be connected with the external structure, and a conversion board is often arranged, the coil is first connected with the conversion board, and the conversion board is connected with the external structure. The conversion board plays a role of transition connection, so that the coil is not directly connected with the external structure.

[0004] The inventor of the utility model finds that the coil module includes a coil and a conversion board, and the coil and the conversion board are two independent parts during the implementation of the utility model. The above structure makes the coil and the conversion board need to be connected through glue dispensing and welding in the production process, so that the production process of the coil module is complex. UTILITY MODEL CONTENT

[0005] The embodiment of the utility model provides a coil module, receiving device and wireless charging device, which can improve the production process.

[0006] To solve the above technical problems, one technical scheme of the utility model is to provide a coil module, which includes a base material, a first printed circuit layer and a second printed circuit layer, the base material is provided with a first surface and a second surface in opposite directions; the first printed circuit layer is arranged on the first surface, and the first printed circuit layer includes a coil; the second printed circuit layer is arranged on the second surface, and the second printed circuit layer includes at least part of a conversion circuit, and the conversion circuit is connected with the coil to convert the coil.

[0007] Optionally, the second printed layer includes the entire conversion circuit, the conversion circuit includes a first connecting end and a second connecting end, the first connecting end is connected with the outer end of the coil, and the second connecting end is connected with the inner end of the coil.

[0008] Optionally, the coil module further comprises a plurality of connecting members, the second connecting end and the inner end of the coil are connected by one connecting member, the partial adapter circuit of the first printed circuit layer and the partial adapter circuit of the second printed circuit layer are connected by other connecting members, and the connecting members are arranged in one of the following manners: the connecting members are arranged as wires; the substrate is provided with at least one through hole extending from the first surface to the second surface, and the connecting members are inserted into the through hole or are conductive layers arranged on the inner wall of the through hole.

[0009] Optionally, the second printed circuit layer comprises a partial adapter circuit, the first printed circuit layer comprises another partial adapter circuit, the partial adapter circuit of the first printed circuit layer is connected with the partial adapter circuit of the second printed circuit layer, the partial adapter circuit of the first printed layer comprises a first connecting end, the partial adapter circuit of the second printed circuit layer comprises a second connecting end, the first connecting end is connected to the outer end of the coil, and the second connecting end is connected to the inner end of the coil.

[0010] Optionally, the coil module further comprises a plurality of connecting members, the second connecting end and the inner end of the coil are connected by one connecting member, the partial adapter circuit of the first printed circuit layer and the partial adapter circuit of the second printed circuit layer are connected by other connecting members, and the connecting members are arranged in one of the following manners: the connecting members are arranged as wires; the substrate is provided with at least one through hole extending from the first surface to the second surface, and the connecting members are inserted into the through hole or are conductive layers arranged on the inner wall of the through hole.

[0011] Optionally, in the direction from the first surface to the second surface, the inner end of the coil and the second connecting end are aligned.

[0012] Optionally, the substrate further comprises a coil portion and an extension portion, the coil is arranged in the coil portion, the adapter circuit further comprises a third connecting end and a fourth connecting end, the third connecting end and the fourth connecting end are arranged in the extension portion, and the third connecting end and the fourth connecting end are used for connecting an external circuit.

[0013] Optionally, the first printed circuit layer is etched on the substrate, and the second printed circuit layer is etched on the substrate.

[0014] To solve the above technical problems, another technical scheme adopted by the utility model is to provide a receiving device comprising the coil module in any one of the above embodiments.

[0015] To solve the above technical problems, another technical scheme adopted by the utility model is to provide a wireless charging device comprising the coil module in any one of the above embodiments.

[0016] The embodiment of the utility model provides an advantageous effect that is different from prior art, the embodiment of the utility model provides a coil module. Coil module includes base material, first printed circuit layer and second printed circuit layer. Base material is opposite and is provided with first surface and second surface. First printed circuit layer is arranged in first surface, and first printed circuit layer includes coil. Second printed circuit layer is arranged in second surface, and second printed circuit layer includes at least part of adapter circuit, and adapter circuit is connected with coil to adapter function to coil. Being different from the coil and adapter board of prior art are two separate parts, in the application, adapter circuit replaces adapter board to realize adapter function, and coil and adapter circuit are arranged in base material, and coil and adapter circuit are arranged in base material through the mode of printed circuit layer. Through such setting, base material, coil and adapter circuit are processed into one part, and coil module is finished after processing and is incoming material, and can directly carry out subsequent process, omits the process of dispensing and welding, improves production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the embodiment of the application, the drawings needed to be used in the embodiment of the application will be briefly introduced as follows, obviously, the drawings described below are only some embodiments of the application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of the drawings.

[0018] Figure 1 It is the front view of the coil module of the embodiment of the utility model;

[0019] Figure 2 It is the rear view of the coil module of the embodiment of the utility model.

[0020] Mark explanation:

[0021] 100, coil module;

[0022] 1, base material; 11, coil part; 12, extension part;

[0023] 2, first printed circuit layer; 21, coil; 211, outer end; 212, inner end;

[0024] 3, second printed circuit layer; 31, adapter circuit; 311, first connection end; 312, second connection end; 313, third connection end; 314, fourth connection end. DETAILED DESCRIPTION

[0025] For the convenience of understanding the utility model, the utility model will be explained in more detail below in combination with the drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element or one or more intervening elements can be present therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element or one or more intervening elements can be present therebetween. The terms "vertical", "horizontal", "left", "right" and similar expressions used in the specification are for illustrative purposes only.

[0026] Unless otherwise defined, all technical and scientific terms used in the specification are the same as those commonly understood by one of ordinary skill in the art to which the utility model belongs. The terms used in the specification of the utility model are only for the purpose of describing the specific embodiments and are not used to limit the utility model. The term "and / or" used in the specification includes any and all combinations of one or more related listed items.

[0027] Please refer to Figure 1 and Figure 2 , the coil module 100 includes a base material 1, a connecting piece, a first printed circuit layer 2 and a second printed circuit layer 3. The connecting piece, the first printed circuit layer 2 and the second printed circuit layer 3 are all arranged on the base material 1, and the first printed circuit layer 2 and the second printed circuit layer 3 are both formed on the base material 1 by etching. Through such an arrangement, the coil module 100 is arranged as a circuit board part, so that the overall volume of the coil module 100 is reduced, the space inside the device can be fully utilized, and thus the size of the device can be reduced. Optionally, the coil module 100 is a double-sided FPC board.

[0028] For the above-mentioned base material 1, please refer to Figure 1 and Figure 2 , the base material 1 includes a coil part 11 and an extension part 12, the coil part 11 and the extension part 12 are integrally formed, the extension part 12 extends outward from the outer edge of the coil 21, and the base material 1 has a first surface and a second surface arranged oppositely.

[0029] For the above-mentioned connecting piece, the connecting piece (not shown in the figure) is arranged in one of the following ways:

[0030] The connecting piece is arranged as a wire;

[0031] The base material 1 is provided with at least one through hole (not shown in the figure), the through hole extends from the first surface to the second surface, and the connecting piece is inserted into the through hole or the connecting piece is a conductive layer arranged on the inner wall of the through hole.

[0032] For the above-mentioned first printed circuit layer 2, please refer to Figure 1 and Figure 2The first printed circuit layer 2 is arranged on the first surface. The first printed circuit layer 2 comprises a coil 21 for generating a magnetic field. The coil 21 is substantially annular, and comprises an inner end 212 on the inner side and an outer end 211 on the outer side, which are used for connecting with the outside of the coil 21. The coil 21 is arranged in the coil portion 11, and the projection of the coil portion 11 completely covers the projection of the coil 21 in the thickness direction of the substrate 1, i.e. from the first surface to the second surface.

[0033] For the second printed circuit layer 3 described above, please refer to Figure 1 and Figure 2 The second printed circuit layer 3 is arranged on the second surface. The second printed circuit layer 3 comprises an entire switching circuit 31 for switching the coil 21. The switching circuit 31 comprises a first connecting end 311, a second connecting end 312, a third connecting end 313 and a fourth connecting end 314, wherein the first connecting end 311 and the second connecting end 312 are arranged in the coil portion 11, and the third connecting end 313 and the fourth connecting end 314 are arranged in the extending portion 12. Two connecting members are arranged, the first connecting end 311 is connected with the outer end 211 through one connecting member, and the second connecting end 312 is connected with the inner end 212 through the other connecting member. The third connecting end 313 and the fourth connecting end 314 are used for connecting with an external circuit (not shown in the figure), so as to switch the coil 21. Optionally, two through holes are arranged, one connecting member is arranged in one through hole, and in the thickness direction of the substrate 1, the first connecting end 311, one through hole and the outer end 211 are aligned, and the second connecting end 312, the other through hole and the inner end 212 are aligned.

[0034] In some embodiments, the second printed circuit layer 3 can also not comprise the entire switching circuit 31. The second printed circuit layer 3 comprises a partial switching circuit 31, and the first printed circuit layer 2 comprises another partial switching circuit 31, wherein the partial switching circuit 31 of the second printed circuit layer 3 is connected with the other partial switching circuit 31 of the first printed circuit layer through a connecting member. The partial switching circuit 31 of the first printed circuit layer at least comprises the first connecting end 311, and the partial switching circuit 31 of the second printed circuit layer 3 at least comprises the second connecting end 312. The first connecting end 311 is connected with the outer end 211, and the second connecting end 312 is connected with the inner end 212 through a connecting member. Optionally, in the thickness direction of the substrate 1, the second connecting end 312, one through hole and the inner end 212 are aligned.

[0035] In some embodiments, the surfaces of the first printed circuit layer 2 and the second printed circuit layer 3 are provided with a cover film.

[0036] In the embodiment of the utility model, coil module 100 includes base material 1, first printed circuit layer 2 and second printed circuit layer 3.Base material 1 is oppositely provided with first surface and second surface.First printed circuit layer 2 is arranged on the first surface, and first printed circuit layer 2 includes coil 21.Second printed circuit layer 3 is arranged on the second surface, and second printed circuit layer 3 includes at least part of adapter circuit 31, and adapter circuit 31 is connected with coil 21 to adapt coil 21.Different from the coil 21 and adapter plate of prior art are two separate parts, in the application, adapter circuit 31 replaces adapter plate to realize the adapter function, and coil 21 and adapter circuit 31 are arranged on base material 1, and coil 21 and adapter circuit 31 are arranged on base material 1 by the mode of printed circuit layer.Through such setting, base material 1, coil 21 and adapter circuit 31 are processed as one part, and coil module 100 is a finished product after processing, and subsequent processes can be directly carried out, and the processes of dispensing and welding are omitted, and the production efficiency is improved, and the production yield is high.

[0037] And the thickness of coil 21 and adapter circuit 31 in the embodiment of the utility model can be ignored, so that the mode of coil module 100 being arranged as a circuit board can obviously improve the internal space of the equipment, so that the equipment can adopt a larger size coil 21, thereby improving the charging efficiency.

[0038] In addition, the coil and adapter plate of prior art are arranged as two separate parts, and the connection between the coil and adapter plate of prior art can be detached or detached. The coil 21 and adapter circuit 31 of the embodiment of the utility model are arranged on the base material 1 by the mode of printed circuit, and the connection between coil 21 and adapter circuit 31 and base material 1 is very stable, and the connection between coil 21 and adapter circuit 31 is also more firm.Through the above setting, even in the scene that the equipment is impacted by falling or vibration, coil 21 and adapter circuit 31 will not fall off, the probability of poor contact is greatly reduced, and the service life of coil module 100 is improved.

[0039] The utility model provides the embodiment of receiving device, and receiving device includes above -mentioned coil module 100, and the structure and function of coil module 100 can refer to the above embodiment, and here will not be repeated.

[0040] The utility model provides the embodiment of wireless charging equipment, and wireless charging equipment includes above -mentioned coil module 100, and the structure and function of coil module 100 can refer to the above embodiment, and here will not be repeated.

[0041] It should be noted that the description and drawings of the utility model give the preferred embodiments of the utility model, however, the utility model can be realized through many different forms, and is not limited to the embodiments described in the description, the embodiments are not as additional limitation to the content of the utility model, the purpose of providing the embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Furthermore, the above technical features continue to combine, form various embodiments not listed above, which are considered as the range of the description of the utility model; further, for those skilled in the art, the above description can be improved or transformed, and all these improvements and transformations should belong to the protection scope of the utility model claims.

Claims

1. A coil module, characterized by The coil module comprises: a substrate, which is provided with a first surface and a second surface oppositely; a first printed circuit layer, which is provided on the first surface and comprises a coil; a second printed circuit layer, which is provided on the second surface and comprises at least part of a switching circuit connected to the coil to switch the coil.

2. The coil module of claim 1, wherein, The second printed circuit layer comprises the entire switching circuit, which comprises a first connecting end connected to an outer end of the coil and a second connecting end connected to an inner end of the coil.

3. The coil module of claim 2, wherein, The coil module further comprises connectors, which are provided in two, the first connecting end and the outer end of the coil are connected through one of the connectors, and the second connecting end and the inner end of the coil are connected through another of the connectors, the connectors are provided in one of the following manners: The connectors are provided as wires. The substrate is provided with at least one through hole extending from the first surface to the second surface, the connectors are inserted into the through hole or the connectors are conductive layers provided on the inner wall of the through hole.

4. The coil module of claim 1, wherein, The second printed circuit layer comprises part of the switching circuit, and the first printed circuit layer comprises another part of the switching circuit, the part of the switching circuit of the first printed circuit layer is connected to the part of the switching circuit of the second printed circuit layer. The part of the switching circuit of the first printed layer comprises a first connecting end, and the part of the switching circuit of the second printed circuit layer comprises a second connecting end, the first connecting end is connected to the outer end of the coil, and the second connecting end is connected to the inner end of the coil.

5. The coil module of claim 4, wherein, The coil module further comprises connectors, which are provided in multiple, the second connecting end and the inner end of the coil are connected through one of the connectors, and the part of the switching circuit of the first printed circuit layer and the part of the switching circuit of the second printed circuit layer are connected through other connectors, the connectors are provided in one of the following manners: The connectors are provided as wires. The substrate is provided with at least one through hole extending from the first surface to the second surface, the connectors are inserted into the through hole or the connectors are conductive layers provided on the inner wall of the through hole.

6. The coil module according to any one of claims 2 to 5, characterized in that In the direction from the first surface to the second surface, the inner end of the coil and the second connecting end are aligned.

7. The coil module according to any one of claims 1 to 5, characterized in that The substrate further comprises a coil part and an extension part, the coil is provided on the coil part, the switching circuit further comprises a third connecting end and a fourth connecting end, the third connecting end and the fourth connecting end are provided on the extension part, and the third connecting end and the fourth connecting end are used to connect an external circuit.

8. The coil module according to claim 1, wherein: The first printed circuit layer is etched on the substrate, and the second printed circuit layer is etched on the substrate.

9. A receiving device, characterized by The coil module comprises the coil module according to any one of claims 1-8.

10. A wireless charging device, comprising: The coil module comprises the coil module according to any one of claims 1-8.

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