Coil assembly, equipment accessory, electronic equipment and charging equipment

Abstract

The utility model relates to the technical field of wireless charging, in particular to a coil assembly, an equipment accessory, electronic equipment and charging equipment, and the coil assembly comprises a coil, a shielding layer and a shielding seat. Wherein the coil and the shielding base are arranged in a stacked mode, and the coil is connected with one face of the shielding base. The shielding layer is located between the coil and the shielding base and wraps the part, close to the shielding base, of the coil. According to the coil assembly, the shielding layer is arranged between the shielding seat and the coil, so that the shielding effect on the coil is improved, and the overall thickness of the coil assembly is reduced.

Description

Technical Field

[0001] The present application relates to the field of wireless charging technology, and in particular to a coil assembly, a device accessory, an electronic device and a charging device. Background Art

[0002] A coil assembly is a device that can transmit electrical energy between different devices without the need for transmission lines.

[0003] The coil assembly generally includes a coil, which generates a changing magnetic field and is induced by other devices to achieve the transmission of electrical energy.

[0004] In the related art, coil components are generally built into various devices. The coil components are generally thick and occupy more space in these devices. Utility Model Content

[0005] In view of this, the present application provides a coil assembly, a device accessory, an electronic device and a charging device to reduce their thickness.

[0006] Specifically, the following technical solutions are included:

[0007] The first aspect of the present application provides a coil assembly, the coil assembly comprising a coil, a shielding layer and a shielding seat. The coil and the shielding seat are stacked and connected to one side of the shielding seat. The shielding layer is located between the coil and the shielding seat and at least wraps a portion of the coil close to the shielding seat.

[0008] Optionally, the shielding layer and the shielding seat are stacked, the shielding layer has a receiving groove, the coil is located in the receiving groove, and is respectively connected to the side wall of the receiving groove and the shielding seat.

[0009] Optionally, the depth of the accommodating groove is smaller than the diameter of the coil.

[0010] Optionally, the coil has a gap, and the gap spirally extends from inside to outside along the circumference of the shielding seat, and at least a portion of the shielding layer fills a portion of the gap.

[0011] Optionally, the shielding layer is applied to the coil.

[0012] Optionally, the coating area of ​​the shielding layer is smaller than the surface area of ​​the coil.

[0013] Optionally, the thickness of the shielding seat ranges from 0.05 to 0.15 mm.

[0014] Optionally, the ratio of the thickness of the shielding seat to the diameter of the coil ranges from 0.15 to 0.75.

[0015] Optionally, the material of the shielding layer is at least one of ferrite, iron alloy and nanocrystal.

[0016] A second aspect of the present application provides a device accessory, which includes a coil assembly as described in the above technical solution.

[0017] A third aspect of the present application provides an electronic device, which includes the coil assembly as described in the above technical solution.

[0018] A fourth aspect of the present application provides a charging device, which includes a coil assembly as described in the above technical solution.

[0019] The beneficial effects of the technical solution provided by the embodiment of the present application include at least: the shielding seat has a shielding and supporting effect on the coil, which is conducive to the normal operation of the coil. The shielding layer is located between the coil and the shielding layer, which can not only improve the shielding effect of the coil, but also improve the space utilization efficiency of the coil assembly of the present application, thereby reducing its overall thickness.

[0020] In summary, the coil assembly of the present application improves the shielding effect of the coil and reduces its overall thickness by providing a shielding layer between the shielding seat and the coil. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 A schematic top view of a coil assembly provided in an embodiment of the present application;

[0023] Figure 2 A longitudinal full cross-sectional schematic diagram of a coil assembly provided in an embodiment of the present application;

[0024] Figure 3 A schematic diagram of the structure of a coil provided in an embodiment of the present application;

[0025] Figure 4 A schematic top view of a shielding layer provided in an embodiment of the present application;

[0026] Figure 5 A schematic longitudinal cross-sectional view of another coil assembly provided in an embodiment of the present application.

[0027] The reference numerals in the figures represent respectively:

[0028] 1. Coil; 101. Gap;

[0029] 2. Shielding layer; 201. Accommodating slot;

[0030] 3. Shielding seat.

[0031] Through the above-mentioned drawings, the present application has shown the clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0033] The directional nouns involved in the embodiments of the present application, such as "upper", "lower", "side", etc., are generally represented by Figure 1 The relative relationship of the orientation shown in the figure is used as the basis, and these orientation terms are used only to more clearly describe the relationship between structures, not to describe absolute orientation. When the product is placed in different postures, the orientation may change, for example, "up" and "down" may be interchangeable.

[0034] Unless otherwise defined, all technical terms used in the embodiments of the present application have the same meanings as commonly understood by those of ordinary skill in the art.

[0035] In order to make the technical solutions and advantages of the present application more clear, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0036] A first aspect of the present application provides a coil assembly, such as Figure 1 , Figure 2 and Figure 5 As shown, the coil assembly includes a coil 1, a shielding layer 2 and a shielding seat 3. The coil 1 and the shielding seat 3 are stacked and connected to one side of the shielding seat 3. The shielding layer 2 is located between the coil 1 and the shielding seat 3 and wraps a portion of the coil 1 close to the shielding seat 3.

[0037] It can be understood that the shielding seat 3 has a shielding and supporting effect on the coil 1, which is beneficial to the normal operation of the coil 1. The shielding layer 2 is located between the coil 1 and the shielding layer 2, which can not only improve the shielding effect of the coil 1, but also improve the space utilization efficiency of the coil assembly of the present application, thereby reducing its overall thickness.

[0038] In the related art, the coil assembly is generally arranged between various electrical components. Coil 1 completes wireless charging by generating a changing magnetic field or receiving a changing magnetic field. To ensure the normal operation of coil 1, it is generally installed on a shielding shell. Therefore, the overall thickness of the coil assembly can be regarded as the sum of the diameter of coil 1 and the thickness of the shielding shell. In order to improve the magnetic field coupling of coil 1 and improve the conversion efficiency of coil 1, it is necessary to increase the thickness of the shielding shell, which also leads to an increase in the overall thickness of coil 1.

[0039] In the embodiment of the present application, since the shielding layer 2 only wraps a portion of the coil 1 close to the shielding seat 3, the overall thickness of the coil assembly is still the sum of the diameter of the coil 1 and the thickness of the shielding seat 3. The shielding layer 2 can have a shielding effect on the coil 1, which can reduce the thickness of the shielding seat 3 while maintaining the shielding effect on the coil 1. Specifically, when achieving the same shielding effect, due to the presence of the shielding layer 2, the thickness of the shielding seat 3 can be reduced accordingly.

[0040] In the embodiment of the present application, the coil 1 can be used as a transmitting coil 1 to generate a changing magnetic field, or as a receiving coil 1 to generate electrical energy by receiving a changing magnetic field. The coil 1 is generally wound by a wire, and an uneven gap is formed on its upper and lower surfaces. The shielding layer 2 can be connected to the coil 1 in the above-mentioned gap to shield the coil 1.

[0041] In the embodiment of the present application, the shielding layer 2 is located between the coil 1 and the shielding seat 3 , and can also be connected to the shielding seat 3 to support the coil 1 and improve the stability of the coil 1 .

[0042] In the embodiment of the present application, the coil 1 is connected to one side of the shielding seat 3 and is supported by the shielding seat 3. The coil 1 and the shielding seat 3 may be connected by bonding.

[0043] In the embodiment of the present application, the shielding seat 3 and the shielding layer 2 shield the coil 1, which can not only reduce the interference of the magnetic field generated by external electrical components during operation on the coil 1, but also reduce the interference of the coil 1 on external electrical components during operation.

[0044] In the embodiment of the present application, the shielding layer 2 and the shielding seat 3 can be formed by an integral molding process.

[0045] In summary, the coil assembly of the present application improves the shielding effect of the coil 1 and reduces its overall thickness by disposing the shielding layer 2 between the shielding seat 3 and the coil 1.

[0046] It is understandable that the shielding layer 2 is connected to the coil 1. When the coil 1 is removed from the shielding layer 2, the shielding layer 2 is likely to lose its shielding effect. Figure 2 , Figure 3 and Figure 4 As shown, the shielding layer 2 has a receiving groove 201, the coil 1 is located in the receiving groove 201, and is connected to the side wall of the receiving groove 201 and the shielding seat 3 respectively, in order to improve the connection stability between the two.

[0047] In the embodiment of the present application, the shielding layer 2 accommodates the coil 1 through the accommodating groove 201, which can improve the support stability of the coil 1. The coil 1 is connected to the side wall of the accommodating groove 201 and the shielding seat 3, which is conducive to the shielding layer 2 and the shielding seat 3 to shield the coil 1, thereby improving the magnetic field coupling degree of the coil 1 and improving the conversion efficiency of the coil 1. At the same time, the accommodating groove 201 also keeps the overall thickness of the coil assembly of the present application at a relatively small level, thereby improving its space utilization efficiency.

[0048] Optionally, the shape of the receiving groove 201 may match the shape of the coil 1 , thereby providing support for the coil 1 .

[0049] Since the shielding layer 2 has a shielding effect on the coil 1, when the depth of the receiving groove 201 is too large, its shielding effect on the coil 1 is obvious, thereby reducing the conversion efficiency of the coil 1. Figure 2 and Figure 3 As shown, the depth of the receiving groove 201 is smaller than the diameter of the coil 1. Such an arrangement can enable the shielding layer 2 to shield the coil 1 while reducing the interference of the shielding layer 2 on the coil 1.

[0050] It can be understood that the shielding layer 2 acts on the electromagnetic waves of the coil 1, such as scattering, absorbing or rebounding, thereby weakening the electromagnetic waves of the coil 1 in the direction toward the shielding layer 2, thereby playing a shielding role. The depth of the receiving groove 201 is smaller than the diameter of the coil 1, so that the direction of the electromagnetic waves generated by the coil 1 is mainly away from the shielding layer 2, which is conducive to coupling with other coils 1 to complete charging.

[0051] Optionally, the orthographic projection of the coil 1 on the shielding seat 3 is located within the orthographic projection of the accommodating groove 201 on the shielding seat 3 .

[0052] Optionally, the depth of the receiving groove 201 is smaller than the radius of the coil 1 .

[0053] In some of the embodiments of this application, Figure 2 and Figure 3 As shown, the coil 1 has a gap 101 , and the gap 101 spirally extends from inside to outside along the circumference of the shielding base 3 , and at least a portion of the shielding layer 2 fills a portion of the gap 101 .

[0054] It is understandable that such a configuration can improve the support stability of the shielding layer 2 on the coil 1. Specifically, the shielding layer 2 fills the gap 101, thereby weakening the movement tendency of the coil 1 relative to the shielding layer 2, thereby improving its support stability.

[0055] In some of the embodiments of this application, Figure 5 As shown, a shielding layer 2 is applied to the coil 1 .

[0056] It can be understood that such a configuration is beneficial for the shielding layer 2 and the shielding seat 3 to shield the coil 1, thereby improving the magnetic field coupling of the coil 1 and enhancing the conversion efficiency of the coil 1, while also keeping the overall thickness of the coil assembly of the present application at a relatively small level, thereby improving its space utilization efficiency.

[0057] In this embodiment of the present application, the shielding layer 2 can be formed by spraying shielding material onto the coil 1 using a spray gun.

[0058] In some of the embodiments of this application, Figure 5 As shown, the coating area of ​​the shielding layer 2 is smaller than the surface area of ​​the coil 1 .

[0059] In the embodiment of the present application, the shielding layer 2 acts on the electromagnetic waves of the coil 1, such as scattering, absorbing or rebounding, thereby weakening the electromagnetic waves of the coil 1 in the direction toward the shielding layer 2, thereby playing a shielding role. The coating area of ​​the shielding layer 2 is smaller than the surface area of ​​the coil 1, so that the direction of the electromagnetic waves generated by the coil 1 is mainly away from the shielding layer 2, which is conducive to the coupling of other coils 1 with it to complete charging.

[0060] In some embodiments of the present application, the thickness of the shielding seat 3 ranges from 0.05 to 0.15 mm.

[0061] It can be understood that within this range, the shielding layer 2 can shield the coil 1 and at the same time has a relatively small thickness, thereby reducing the overall thickness of the coil assembly of the present application.

[0062] Optionally, the thickness of the shielding base 3 may be 0.05 mm, 0.06 mm, 0.07 mm, 0.08 mm, 0.09 mm, 0.10 mm, 0.11 mm, 0.12 mm, 0.13 mm, 0.14 mm or 0.15 mm, or other values ​​between 0.05 and 0.15 mm.

[0063] In some embodiments of the present application, the ratio of the thickness of the shielding base 3 to the diameter of the coil 1 is in the range of 0.15 to 0.75.

[0064] It can be understood that within this range, the overall thickness of the coil assembly is reduced, and the shielding seat 3 can shield the coil 1, so that the coil 1 can work normally.

[0065] Optionally, the value in the above value range may be 0.15 mm, 0.25 mm, 0.35 mm, 0.45 mm, 0.53 mm, 0.65 mm or 0.75 mm, or may be other values ​​within the value range.

[0066] Optionally, when the thickness of the shielding layer 2 is 0.05 mm, the diameter of the coil 1 may be 0.08 mm, 0.1 mm, 0.12 mm, 0.14 mm, 0.16 mm, 0.18 mm or 0.2 mm, or other values ​​between 0.08 and 0.2 mm.

[0067] Optionally, when the thickness of the shielding layer 2 is 0.15 mm, the diameter of the coil 1 may be 0.08 mm, 0.1 mm, 0.12 mm, 0.14 mm, 0.16 mm, 0.18 mm or 0.2 mm, or other values ​​between 0.08 and 0.2 mm.

[0068] In some embodiments of the present application, the material of the shielding layer 2 is at least one of ferrite, iron alloy and nanocrystal.

[0069] It can be understood that the shielding layer 2 made of the above-mentioned material can have an effect on the electromagnetic waves generated by the coil 1 , such as rebounding or absorbing them, thereby achieving a shielding effect on the coil 1 .

[0070] A second aspect of the present application provides a device accessory, which includes a coil assembly as described in the above embodiment.

[0071] It can be understood that, due to the use of the coil assembly of the above embodiment, the equipment accessories of the present application have the same technical effects as the above coil assembly, which will not be described in detail here.

[0072] Optionally, the device accessory may be a protective case, such as a mobile phone protective case, a tablet protective case, etc.

[0073] A third aspect of the present application provides an electronic device, which includes the coil assembly according to the above embodiment.

[0074] It can be understood that, due to the use of the coil assembly of the above embodiment, the electronic device of the present application has the same technical effect as the above coil assembly, which will not be described in detail here.

[0075] Optionally, the electronic device may be a device that requires electrical energy to drive, such as a mobile phone, a tablet, etc.

[0076] A fourth aspect of the present application provides a charging device, which includes a coil assembly as described in the above embodiment.

[0077] It can be understood that, due to the use of the coil assembly of the above embodiment, the charging device of the present application has the same technical effect as the above coil assembly, which will not be described in detail here.

[0078] Optionally, the charging device may be a charger for supplying power to an electronic device.

[0079] In the present application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless otherwise clearly defined.

[0080] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the present application disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only.

[0081] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A coil assembly, characterized in that: The coil assembly comprises a coil (1), a shielding layer (2) and a shielding seat (3), wherein: The coil (1) and the shielding seat (3) are stacked and connected to one side of the shielding seat (3); The shielding layer (2) is located between the coil (1) and the shielding seat (3), and wraps a portion of the coil (1) close to the shielding seat (3).

2. The coil assembly according to claim 1, characterized in that: The shielding layer (2) and the shielding seat (3) are stacked, the shielding layer (2) has a receiving groove (201), the coil (1) is located in the receiving groove (201), and is respectively connected to the side wall of the receiving groove (201) and the shielding seat (3).

3. The coil assembly according to claim 2, characterized in that: The depth of the accommodating groove (201) is smaller than the diameter of the coil (1).

4. The coil assembly according to claim 2, characterized in that: The coil (1) has a gap (101), the gap (101) spirally extending from inside to outside along the circumference of the shielding seat (3), and at least a part of the shielding layer (2) fills a part of the gap (101).

5. The coil assembly according to claim 1, characterized in that: The shielding layer (2) is coated on the coil (1).

6. The coil assembly according to claim 5, characterized in that: The coating area of ​​the shielding layer (2) is smaller than the surface area of ​​the coil (1).

7. The coil assembly according to claim 1, characterized in that: The thickness of the shielding seat (3) ranges from 0.05 to 0.15 mm.

8. The coil assembly according to claim 7, characterized in that: The ratio of the thickness of the shielding seat (3) to the diameter of the coil (1) is in the range of 0.15 to 0.

75.

9. The coil assembly according to claim 1, characterized in that: The material of the shielding layer (2) is at least one of ferrite, iron alloy and nanocrystal.

10. An equipment accessory, characterized in that: The equipment accessory comprises the coil assembly according to any one of claims 1 to 9.

11. An electronic device, characterized in that: The electronic device comprises the coil assembly according to any one of claims 1 to 9.

12. A charging device, characterized in that: The charging device comprises the coil assembly according to any one of claims 1 to 9.

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