Coil assemblies, equipment accessories, electronic devices and charging equipment

Abstract

This application relates to the field of wireless charging technology, and particularly to a coil assembly, device accessory, electronic device, and charging device. The coil assembly includes a coil, a magnetic layer, and a connector, wherein the coil, the magnetic layer, and the connector are arranged in a sequentially stacked manner. The magnetic layer includes an opening for forming an electrical connection between the coil and the connector. This application can mitigate the occurrence of magnetic leakage.

Description

Technical Field

[0001] This application relates to the field of wireless charging technology, and in particular to a coil assembly, device accessories, electronic devices, and charging devices. Background Technology

[0002] A coil assembly is a device used to generate a changing magnetic field, which can be sensed by other devices to complete wireless charging.

[0003] In related technologies, the magnetic field energy of the coil assembly may leak, leading to a decrease in charging performance. Utility Model Content

[0004] In view of this, this application provides a coil assembly, device accessory, electronic device, and charging device to mitigate the occurrence of magnetic leakage.

[0005] Specifically, the following technical solutions are included:

[0006] A first aspect of this application provides a coil assembly comprising a coil, a magnetic layer, and a connector, wherein...

[0007] The coil, the magnetic layer, and the connector are arranged in a sequentially stacked manner.

[0008] The magnetic layer includes openings for forming an electrical connection between the coil and the connector.

[0009] In some possible implementations, the opening is located within the orthographic projection of the connector onto the magnetic layer.

[0010] With the above arrangement, the opening facilitates direct contact between the coil and the connecting layer to form an electrical connection.

[0011] In some possible implementations, the opening includes a first hole and a second hole, one end of the coil is electrically connected to the connector through the first hole, and the other end of the coil is electrically connected to the connector through the second hole.

[0012] With the above arrangement, the different positions of the first and second holes of the coil form an electrical connection with the connector, which facilitates the formation of a complete circuit in the coil to allow for the passage of varying current. This, in turn, helps generate a changing magnetic field to power other devices. Furthermore, the arrangement of the first and second holes also helps reduce the cavity area of ​​the magnetic layer, thus mitigating magnetic leakage and improving charging performance.

[0013] In some possible implementations, the coil's orthographic projection onto the magnetic layer is generally annular, with the first hole located inside the coil's orthographic projection and the second hole located outside the coil's orthographic projection.

[0014] Since coils are generally formed by winding, the two ends of the coil are located on the inner and outer sides respectively, and the positions of the first hole and the second hole coincide with the positions of the two ends of the coil, which is conducive to the formation of an electrical connection between the coil and the connector.

[0015] In some possible implementations, the connector includes a first connecting portion and a second connecting portion, one side of the first connecting portion is connected to one side of the second connecting portion, the length of the first connecting portion is less than the length of the second connecting portion, and the same end of the first connecting portion and the second connecting portion are respectively used for electrical connection with the coil.

[0016] With the above arrangement, since the two ends of the coil are in different positions, the arrangement of the first and second connecting parts of different lengths facilitates the electrical connection between the connector and the coil to form a circuit, thereby helping to pass current through the coil.

[0017] In some possible implementations, the coil is welded to the connector to form a solder joint, the solder joint being located within the opening.

[0018] With the above arrangement, since the position of the opening is different from the position of the coil and the connector, the opening can be filled with solder points to achieve electrical connection between the coil and the connector, and also to avoid the coil and the connector from extending into the opening to form an electrical connection, which would cause the coil and the connector to bend.

[0019] In some possible implementations, the coil assembly includes a heat dissipation layer, one side of which is attached to the side of the magnetic layer opposite to the coil.

[0020] With the above arrangement, the heat dissipation layer can draw away the heat generated by the magnetic layer and dissipate it outwards through the side facing away from the magnetic layer, thus achieving the effect of heat dissipation.

[0021] In some possible implementations, the heat dissipation layer includes a receiving space that extends through the heat dissipation layer in the thickness direction, and the connector is located within the receiving space.

[0022] The above arrangement utilizes the space to accommodate the connectors, which reduces interference between the connectors and the heat sink, and also helps to reduce the space occupied by the coil assembly.

[0023] A second aspect of this application provides a device accessory comprising a coil assembly as described in the above technical solutions.

[0024] Since the coil assembly adopts the above-described technical solution, the equipment accessories of this application have the same technical effects as the above-described technical solution, and will not be described in detail here.

[0025] A third aspect of this application provides an electronic device comprising a coil assembly as described above.

[0026] Since the coil assembly using the above-described technical solution has the same technical effect as the above-described technical solution, it will not be described again here.

[0027] A fourth aspect of this application provides a charging device, the charging device including the coil assembly as described in the above technical solutions.

[0028] Since the coil assembly using the above-described technical solution has the same technical effect as the above-described technical solution, it will not be described again here.

[0029] The beneficial effects of the technical solution provided in this application include at least the following: the coil can generate a changing magnetic field through the connector, and the changing magnetic field can be sensed by other devices to complete charging. The magnetic layer can be used to change the direction of its magnetic field, making it susceptible to induction by other devices. The connector and the magnetic layer are stacked together, and can form an electrical connection with the coil through openings, which helps to reduce the cavity area on the magnetic layer, thus helping to mitigate magnetic leakage. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of a coil assembly provided in an embodiment of this application;

[0032] Figure 2 A front view of a coil assembly provided in an embodiment of this application;

[0033] Figure 3 This is an exploded view of the structure of a coil assembly provided in an embodiment of this application;

[0034] Figure 4 This is a rear view of a coil assembly provided in an embodiment of this application.

[0035] The reference numerals in the figure indicate:

[0036] 1. Coil;

[0037] 2. Magnetic layer; 201. Opening; 2011. First hole; 2012. Second hole;

[0038] 3. Connector; 31. First connecting part; 32. Second connecting part;

[0039] 4. Heat dissipation layer; 401. Accommodation space.

[0040] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0042] In the embodiments of this application, directional terms such as "upper," "lower," and "side" are generally used in the following ways: Figure 1 The relative positions shown are based on the given information, and these directional terms are used only to more clearly describe the relationships between structures, not to describe absolute positions. Positions may change when the product is placed in different orientations; for example, "up" and "down" may be interchanged.

[0043] Unless otherwise defined, all technical terms used in the embodiments of this application have the same meaning as commonly understood by one of ordinary skill in the art.

[0044] To make the technical solutions and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0045] The first aspect of this application provides a coil assembly, such as... Figure 1 and Figure 2 As shown, the coil assembly includes a coil 1, a magnetic layer 2, and a connector 3, wherein,

[0046] Coil 1, magnetic layer 2 and connector 3 are stacked in sequence;

[0047] The magnetic layer 2 includes an opening 201, which is used to form an electrical connection between the coil 1 and the connector 3.

[0048] With the above arrangement, coil 1 can generate a changing magnetic field through connector 3. This changing magnetic field can be induced by other devices to complete charging. Magnetic layer 2 can be used to change the direction of its magnetic field, making it susceptible to induction by other devices. Connector 3 and magnetic layer 2 are stacked together, and can form an electrical connection with coil 1 through opening 201. This helps to reduce the cavity area on magnetic layer 2, thus mitigating magnetic leakage.

[0049] In related technologies, the magnetic layer 2 typically has an opening 201 with a shape consistent with that of the connector 3, placing the magnetic layer 2 and the connector 3 in the same position. However, this opening 201 can easily lead to leakage of the magnetic field generated by the coil 1, thereby affecting the charging performance. This application reduces the size of the opening 201 by moving the position of the connector 3 downwards, thus mitigating the possibility of leakage.

[0050] In this embodiment, current can be passed through coil 1. When the current changes, its magnetic field changes accordingly. Other devices can generate current and complete charging by sensing these changing magnetic fields.

[0051] In this embodiment, the magnetic layer 2 can be made of materials such as nanocrystals or ferrites.

[0052] In this embodiment, the connector 3 can be a circuit board, which is electrically connected to the coil 1 by means of welding or other methods.

[0053] In this embodiment of the application, the opening 201 is used to form an electrical connection between the coil 1 and the connector 3. The opening 201 can allow the end of the coil 1 to pass through and contact the connector 3 to form an electrical connection, or allow the connector 3 to pass through and contact the coil 1 to form an electrical connection, or allow the connector 3 and the coil 1 to pass through simultaneously and contact each other to form an electrical connection.

[0054] In this embodiment of the application, the number of openings 201 can be one.

[0055] In some embodiments of this application, such as Figure 3 As shown, the opening 201 is located within the orthographic projection of the connector 3 onto the magnetic layer 2.

[0056] With the above arrangement, the opening 201 facilitates direct contact between the coil 1 and the connecting layer to form an electrical connection.

[0057] In this embodiment, the connection position of the coil 1, the axis of the opening 201 and the connection position of the connector 3 can be roughly on the same straight line, which is conducive to the coil 1 and the connector 3 contacting each other to form an electrical connection.

[0058] In some embodiments of this application, such as Figure 3As shown, the opening 201 includes a first hole 2011 and a second hole 2012. One end of the coil 1 is electrically connected to the connector 3 through the first hole 2011, and the other end of the coil 1 is electrically connected to the connector 3 through the second hole 2012.

[0059] With the above arrangement, the first hole 2011 and the second hole 2012 allow different positions of the coil 1 to form an electrical connection with the connector 3, which facilitates the formation of a complete circuit in the coil 1 to allow for the passage of varying current. This, in turn, helps to generate a varying magnetic field to power other devices. In addition, the arrangement of the first hole 2011 and the second hole 2012 also helps to reduce the cavity area of ​​the magnetic layer 2, which helps to reduce magnetic leakage and thus improves charging performance.

[0060] In some embodiments of this application, such as Figure 2 and Figure 3 As shown, the orthographic projection of coil 1 onto magnetic layer 2 is roughly annular, with the first hole 2011 located inside the orthographic projection of coil 1 and the second hole 2012 located outside the orthographic projection of coil 1.

[0061] Since coil 1 is generally formed by winding, the two ends of coil 1 are located on the inner and outer sides respectively, and the positions of the first hole 2011 and the second hole 2012 coincide with the positions of the two ends of coil 1, which is conducive to the formation of an electrical connection between coil 1 and connector 3.

[0062] In some embodiments of this application, such as Figure 3 As shown, the connector 3 includes a first connecting part 31 and a second connecting part 32. One side of the first connecting part 31 is connected to one side of the second connecting part 32. The length of the first connecting part 31 is less than the length of the second connecting part 32. The same end of the first connecting part 31 and the second connecting part 32 are respectively used for electrical connection with the coil 1.

[0063] With the above arrangement, since the two ends of the coil 1 are in different positions, the arrangement of the first connecting part 31 and the second connecting part 32 of different lengths facilitates the electrical connection between the connector 3 and the coil 1 to form a circuit, thereby helping the coil 1 to carry current.

[0064] In some embodiments of this application, the coil 1 is welded to the connector 3 to form a solder joint, which is located within the opening 201.

[0065] With the above arrangement, since the position of the opening 201 is different from the position of the coil 1 and the connector 3, the opening 201 can be filled with solder points, which can not only realize the electrical connection between the coil 1 and the connector 3, but also avoid the coil 1 and the connector 3 from extending into the opening 201 to form an electrical connection, thus preventing the coil 1 and the connector 3 from bending.

[0066] In some embodiments of this application, such as Figure 1 and Figure 4 As shown, the coil assembly includes a heat dissipation layer 4, one side of which is attached to the side of the magnetic layer 2 facing away from the coil 1.

[0067] With the above arrangement, the heat dissipation layer 4 can draw away the heat generated by the magnetic layer 2 and dissipate it outward through the side facing away from the magnetic layer 2, thereby achieving the effect of heat dissipation.

[0068] In this embodiment, the receiving space 401 can extend to the edge of the heat dissipation layer 4, which facilitates the arrangement of the connector 3 within the receiving space 401.

[0069] In this embodiment, the heat dissipation layer 4 can be a graphite sheet.

[0070] In some embodiments of this application, such as Figure 3 As shown, the heat dissipation layer 4 includes a receiving space 401, which extends through the heat dissipation layer 4 along the thickness direction, and the connector 3 is located within the receiving space 401.

[0071] With the above arrangement, the connector 3 is accommodated in the accommodating space 401, which can reduce the interference between the connector 3 and the heat sink, and also help to reduce the space occupied by the coil assembly.

[0072] A second aspect of this application provides a device accessory, which includes a coil assembly as described above.

[0073] Since the coil assembly of the above embodiments is used, the equipment accessories of this application have the same technical effects as the above embodiments, and will not be described again here.

[0074] In this embodiment of the application, the device accessories can be accessories such as mobile phone cases and tablet computer cases.

[0075] A third aspect of this application provides an electronic device that includes a coil assembly as described above.

[0076] Because the electronic device of this application uses the coil assembly of the above embodiments, it has the same technical effects as the above embodiments, and will not be described again here.

[0077] In the embodiments of this application, the electronic device can be a mobile phone, tablet computer, or other similar product.

[0078] A fourth aspect of this application provides a charging device, which includes a coil assembly as described above.

[0079] Since the coil assembly of the above embodiments is used, the charging device of this application has the same technical effects as the above embodiments, which will not be repeated here.

[0080] In this embodiment of the application, the charging device can be a wireless charging dock.

[0081] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0082] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only.

[0083] It should be understood that this application is not limited to the precise structure 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 application is limited only by the appended claims.

Claims

1. A coil assembly, characterized by, The coil assembly includes a coil (1), a magnetic layer (2), and a connector (3), wherein, The coil (1), the magnetic layer (2), and the connector (3) are arranged in a sequentially stacked manner; The magnetic layer (2) includes an opening (201) for forming an electrical connection between the coil (1) and the connector (3).

2. The coil assembly of claim 1, wherein, The opening (201) is located within the orthographic projection of the connector (3) onto the magnetic layer (2).

3. The coil assembly of claim 2, wherein, The opening (201) includes a first hole (2011) and a second hole (2012). One end of the coil (1) is electrically connected to the connector (3) through the first hole (2011), and the other end of the coil (1) is electrically connected to the connector (3) through the second hole (2012).

4. The coil assembly of claim 3, wherein, The coil (1) is roughly annular in the orthographic projection of the magnetic layer (2), the first hole (2011) is located inside the orthographic projection of the coil (1), and the second hole (2012) is located outside the orthographic projection of the coil (1).

5. The coil assembly of claim 3, wherein, The connector (3) includes a first connecting part (31) and a second connecting part (32). One side of the first connecting part (31) is connected to one side of the second connecting part (32). The length of the first connecting part (31) is less than the length of the second connecting part (32). The same end of the first connecting part (31) and the second connecting part (32) are respectively used for electrical connection with the coil (1).

6. The coil assembly of claim 1, wherein, The coil (1) is welded to the connector (3) to form a solder joint, which is located inside the opening (201).

7. The coil assembly according to claim 1, characterized in that, The coil assembly includes a heat dissipation layer (4), one side of which is attached to the side of the magnetic layer (2) facing away from the coil (1).

8. The coil assembly according to claim 7, characterized in that, The heat dissipation layer (4) includes a receiving space (401) that extends through the heat dissipation layer (4) along the thickness direction, and the connector (3) is located within the receiving space (401).

9. A device accessory, characterized in that, The equipment accessories include the coil assembly as described in any one of claims 1 to 8.

10. An electronic device, characterized in that, The electronic device includes a coil assembly as described in any one of claims 1 to 8.

11. A charging device, characterized in that, The charging device includes the coil assembly as described in any one of claims 1 to 8.

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