Coil structure and electronic equipment

Abstract

The utility model provides a coil structure and electronic equipment, and the coil structure comprises an NFC coil and a wireless charging coil, the number of turns of the wireless charging coil is at least two, the NFC coil is arranged between every two adjacent turns of the wireless charging coil, and the NFC coil and the wireless charging coil are arranged at an interval, so that the overall area of the coil structure is reduced. Therefore, the purpose of miniaturization of the coil structure is achieved.

Description

Technical Field

[0001] The present application relates to the field of radio technology, and in particular to a coil structure and electronic equipment. Background Art

[0002] Near Field Communication (NFC) technology is a short-range, high-frequency radio technology that can realize the function of short-range wireless communication, identify and exchange data when devices are close to each other, and then realize functions such as access control management, logistics management, mobile payment, data transmission, and information download. Therefore, it is widely used in file transfer, mobile payment, public transportation, and medical health.

[0003] Wireless charging technology is a wireless power transmission technology. Wireless charging usually adopts the principle of electromagnetic induction to achieve contactless energy transfer by transferring energy from the transmitter to the receiver.

[0004] As important components for realizing NFC and wireless charging, NFC coils and wireless charging coils can be built into the required devices. For example, a mobile phone can have both NFC and wireless charging functions. However, the current NFC coils and wireless charging coils are relatively independently integrated into the device, resulting in a large occupied area, which is not conducive to achieving the purpose of miniaturization. Utility Model Content

[0005] In view of this, the present application provides a coil structure and an electronic device to reduce the area of ​​the coil structure.

[0006] The present application provides a coil structure, including an NFC coil and a wireless charging coil, wherein the number of turns of the wireless charging coil is at least two, and the NFC coil is arranged between every two adjacent turns of the wireless charging coil and is spaced apart from the wireless charging coil.

[0007] In some embodiments, a distance between the NFC coil and the wireless charging coil is greater than or equal to 0.2 mm.

[0008] In some embodiments, the NFC coil has a first NFC feed point and a second NFC feed point that are spaced apart, the first NFC feed point is connected to a head end of the NFC coil, the second NFC feed point is connected to an end of the NFC coil, and the first NFC feed point and the second NFC feed point are located outside the NFC coil and the wireless charging coil.

[0009] In some embodiments, the wireless charging coil also includes a first wireless charging feed point and a second wireless charging feed point that are spaced apart, the first wireless charging feed point is connected to the head end of the wireless charging coil, the second wireless charging feed point is connected to the end of the wireless charging coil, and the first wireless charging feed point and the second wireless charging feed point are located outside the NFC coil and the wireless charging coil.

[0010] In some embodiments, the intersection of the NFC coil and the wireless charging coil is connected through a via.

[0011] In some embodiments, the planar shapes of the NFC coil and the wireless charging coil include at least one of a circle, a rectangle, a square, an ellipse, and a triangle.

[0012] In some embodiments, the spacing between every two adjacent turns of the wireless charging coil is the same.

[0013] In some embodiments, the spacing between every two adjacent turns of the NFC coil is the same.

[0014] In some embodiments, the spacing between two adjacent turns of the wireless charging coil is different.

[0015] The present application also provides an electronic device, comprising the coil structure as described above.

[0016] The present application provides a coil structure and an electronic device, including an NFC coil and a wireless charging coil, wherein the number of turns of the wireless charging coil is at least two, and the NFC coil is arranged between every two adjacent turns of the wireless charging coil and is arranged at an interval with the wireless charging coil. In the present application, by arranging the NFC coil between every two adjacent turns of the wireless charging coil, a two-in-one coil structure is formed to ensure the performance of NFC, and at the same time, reduce the overall area of ​​the coil structure, thereby achieving the purpose of miniaturization of the coil structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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 those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a schematic diagram of the first structure of the coil structure provided by the present application;

[0019] Figure 2 is a second structural schematic diagram of the coil structure provided in this application;

[0020] Figure 3It is a third structural schematic diagram of the coil structure provided in this application;

[0021] Figure 4 is a second structural schematic diagram of the coil structure provided in this application;

[0022] Figure 5 This is a third structural schematic diagram of the coil structure provided in this application.

[0023] Reference numerals:

[0024] 10. Coil structure; 100. NFC coil; 110. First NFC feed point; 120. Second NFC feed point; 200. Wireless charging coil; 210. First wireless charging feed point; 220. Second wireless charging feed point; 300. Via hole. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application are clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only 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 those skilled in the art without creative work are within the scope of protection of the present application. In the absence of conflict, the following embodiments and their technical features can be combined with each other.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In the description of the present application, the meaning of "several" is at least one, such as one, two, etc., unless otherwise clearly and specifically defined.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by a person skilled in the art to which this application belongs. The terms used herein are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more related listed items. The terms "connection", "electrical connection", and "electrical connection" used herein include any direct and indirect electrical or structural connection means. Therefore, if the text describes a first device coupled / connected / electrically connected to a second device, it means that the first device can be directly electrically / structurally connected to the second device, or indirectly electrically / structurally connected to the second device through other devices or connection means.

[0028] The present application provides a coil structure, including an NFC coil and a wireless charging coil, wherein the number of turns of the wireless charging coil is at least two turns, and the NFC coil is arranged between every two adjacent turns of the wireless charging coil and is spaced apart from the wireless charging coil.

[0029] In the present application, a two-in-one coil structure is formed by arranging the NFC coil between every two adjacent turns of the wireless charging coil to ensure the performance of NFC while reducing the overall area of ​​the coil structure, thereby achieving the purpose of miniaturization of the coil structure.

[0030] See also Figure 1 , Figure 1 1 is a schematic diagram of the first structure of the coil structure provided by the present application. The present application provides a coil structure 10, including an NFC coil 100 and a wireless charging coil 200, the number of turns of the wireless charging coil 200 is at least two turns, the NFC coil 100 is arranged between every two adjacent turns of the wireless charging coil 200 and is spaced apart from the wireless charging coil 200, and the wireless charging coil 200 and the wireless charging coil 200 can be spaced apart by setting an insulating layer, a separation plate or a hole. The number of turns of the wireless charging coil 200 can be 2 turns, 5 turns, 8 turns, 10 turns, 20 turns or 30 turns, etc., and the number of turns of the NFC coil 100 can be 1 turn, 2 turns, 5 turns, 8 turns, 10 turns, 20 turns or 30 turns, etc., and the number of turns refers to the number of turns of each coil. The NFC coil 100 and the wireless charging coil 200 are composed of silver wire, so that the NFC coil 100 and the wireless charging coil 200 can pass a large current in a very small size, thereby ensuring the reliability of the NFC coil 100 and the wireless charging coil 200 during use. Optionally, the NFC coil 100 and the wireless charging coil 200 may also be formed of other conductive wires, such as copper wires, which is not limited here.

[0031] In the present application, the NFC coil 100 is arranged between every two adjacent turns of the wireless charging coil 200 to form a two-in-one coil structure 10, so as to reduce the influence of the magnetic field of the wireless charging coil 200 on the NFC coil 100, that is, to ensure the performance of NFC, and at the same time, to reduce the overall area of ​​the coil structure 10, so as to achieve the purpose of miniaturization of the coil structure 10. In addition, the NFC coil 100 is arranged between every two adjacent turns of the wireless charging coil 200, so as to reduce the material requirements of the NFC coil 100 and the wireless charging coil 200 which are independently arranged, that is, to reduce the material cost, and at the same time reduce the processing cost.

[0032] In one embodiment, the spacing L between the NFC coil 100 and the wireless charging coil 200 is greater than or equal to 0.2 mm. Specifically, the spacing L between the NFC coil 100 and the wireless charging coil 200 may be 0.2 mm, 0.4 mm, 0.6 mm, 0.8 mm, 1.1 mm, 1.4 mm, or 1.9 mm, etc. In the present application, by setting the spacing L between the NFC coil 100 and the wireless charging coil 200 within this range, the influence of the magnetic field of the wireless charging coil 200 on the NFC coil 100 is further reduced, and at the same time, the overall area of ​​the coil structure 10 is further reduced, so as to achieve the purpose of miniaturization of the coil structure 10.

[0033] In one embodiment, the NFC coil 100 has a first NFC feed point 110 and a second NFC feed point 120 that are spaced apart, the first NFC feed point 110 is connected to the head end of the NFC coil 100 , the second NFC feed point 120 is connected to the end of the NFC coil 100 , and the first NFC feed point 110 and the second NFC feed point 120 are located outside the NFC coil 100 and the wireless charging coil 200 .

[0034] In the present application, the first NFC feed point 110 and the second NFC feed point 120 are arranged outside the NFC coil 100 and the wireless charging coil 200 to ensure that the signal transmission path is unobstructed and reduce signal attenuation and interference during the transmission process, thereby ensuring the NFC and wireless charging functions. At the same time, the overall area of ​​the coil structure 10 is further reduced, thereby achieving the purpose of miniaturization of the coil structure 10.

[0035] In one embodiment, the wireless charging coil 200 also includes a first wireless charging feed point 210 and a second wireless charging feed point 220 that are spaced apart, the first wireless charging feed point 210 is connected to the head end of the wireless charging coil 200, and the second wireless charging feed point 220 is connected to the end of the wireless charging coil 200, and the first wireless charging feed point 210 and the second wireless charging feed point 220 are located outside the NFC coil 100 and the wireless charging coil 200.

[0036] In the present application, the first wireless charging feeding point 210 and the second wireless charging feeding point 220 are arranged outside the NFC coil 100 and the wireless charging coil 200 to ensure that the signal transmission path is unobstructed and reduce the attenuation and interference of the signal during the transmission process, thereby ensuring the NFC and wireless charging functions. At the same time, the overall area of ​​the coil structure 10 is further reduced, thereby achieving the purpose of miniaturization of the coil structure 10.

[0037] In one embodiment, the planar shapes of the NFC coil 100 and the wireless charging coil 200 include at least one of a circle, a rectangle, a square, an ellipse, a pentagon, a hexagon, a triangle or an irregular shape. The irregular shape may be a D-shape, a T-shape or other irregular shapes. The planar shapes of the NFC coil 100 and the wireless charging coil 200 may be the same, and the same shape may facilitate the integration of the NFC coil 100 and the wireless charging coil 200, improve processing efficiency, and reduce costs, but they may also be different. In this embodiment, the planar shapes of the NFC coil 100 and the wireless charging coil 200 are the same as an example for explanation.

[0038] In one embodiment, the intervals between every two adjacent turns of the wireless charging coil 200 are the same.

[0039] In one embodiment, the intervals between every two adjacent turns of the NFC coil 100 are the same.

[0040] In another embodiment, the intervals between two adjacent turns of the wireless charging coil 200 are different.

[0041] In another embodiment, the intervals between two adjacent turns of the NFC coil 100 are different.

[0042] See also Figure 2 , Figure 2 is a schematic diagram of the second structure of the coil structure provided in this application. It should be noted that: Figure 2 a is the first layer circuit of the coil structure 10, b is the second layer circuit of the coil structure 10, and the difference between the second structure and the first structure is that:

[0043] The intersection of the NFC coil 100 and the wireless charging coil 200 is connected through a via 300. Furthermore, the wireless charging coil 200 is composed of two layers of double-sided parallel wiring, and the NFC coil 100 is composed of single-sided wiring. Single-sided wiring means that the coil line is directly laid out on a single layer of the circuit board, and double-sided wiring means that the coil lines are laid out on different layers of the circuit board. The other structures are the same as the first structure and will not be repeated here.

[0044] In the present application, by connecting the NFC coil 100 and the wireless charging coil 200 at the intersection with a via 300 and arranging the two on different wiring layers, the interference with the reception and transmission of signals can be effectively reduced, thereby ensuring their respective performances. At the same time, the overall area of ​​the coil structure 10 can be further reduced, thereby achieving the purpose of miniaturization of the coil structure 10.

[0045] In the present application, the wireless charging coil 200 is formed by two layers of double-sided wiring, and the connection between layers is realized through vias 300, so that space resources can be used more effectively, interference between electronic components can be reduced, and the stability and efficiency of the communication of the wireless charging coil 200 can be improved. The NFC coil 100 is composed of single-sided wiring, and the design method is simple and easy to operate.

[0046] See also Figure 3 , Figure 3 This is a schematic diagram of the third structure of the coil structure provided in this application. It should be noted that: Figure 3 In the figure, c is the first layer circuit of the coil structure 10, and d is the second layer circuit of the coil structure 10. The difference between the third structure and the second structure is that:

[0047] The wireless charging coil 200 is composed of two layers of double-sided serial wiring, and the NFC coil 100 is composed of single-sided wiring. The other structures are the same as the second structure and will not be repeated here.

[0048] See also Figure 4 , Figure 4 This is a schematic diagram of the fourth structure of the coil structure provided in this application. It should be noted that: Figure 4 In the figure, e is the first layer circuit of the coil structure 10, and f is the second layer circuit of the coil structure 10. The fourth structure is different from the second structure in that:

[0049] The wireless charging coil 200 is composed of two layers of parallel wiring on both sides, and the NFC coil 100 is composed of two layers of parallel wiring on both sides. The other structures are the same as the second structure, and will not be repeated here.

[0050] In the present application, the wireless charging coil 200 and the NFC coil 100 are both composed of two layers of double-sided wiring, and the connection between the layers is achieved through vias 300, so that space resources can be used more effectively, interference between electronic components can be reduced, and the stability and efficiency of the communication of the wireless charging coil 200 can be improved.

[0051] See also Figure 5 , Figure 5 This is a schematic diagram of the fourth structure of the coil structure provided in this application. It should be noted that: Figure 5 In the figure, g is the first layer circuit of the coil structure 10, and h is the second layer circuit of the coil structure 10. The fifth structure is different from the second structure in that:

[0052] The wireless charging coil 200 is composed of two layers of parallel wiring on both sides, and the NFC coil 100 is composed of two layers of series wiring on both sides. The other structures are the same as the second structure and will not be repeated here.

[0053] The present application also provides an electronic device, including the coil structure 10 provided in the present application. Further, the electronic device also includes a substrate, and the coil structure 10 is arranged on the substrate. The electronic device can be a mobile phone, a computer, a smart watch or other devices.

[0054] The present application provides a coil structure 10 and an electronic device. The NFC coil 100 is arranged between every two adjacent turns of the wireless charging coil 200 to form a two-in-one coil structure 10, so as to reduce the influence of the magnetic field of the wireless charging coil 200 on the NFC coil 100, that is, to ensure the performance of NFC, and at the same time, to reduce the overall area of ​​the coil structure 10, so as to achieve the purpose of miniaturization of the coil structure 10. In addition, the NFC coil 100 is arranged between every two adjacent turns of the wireless charging coil 200, so as to reduce the material requirements of the NFC coil 100 and the wireless charging coil 200 that are independently arranged, that is, to reduce the material cost, and at the same time reduce the processing cost.

[0055] The above descriptions are merely embodiments of the present application and are not intended to limit the patent scope of the present application. Any equivalent structural or equivalent process transformations made using the contents of the specification and drawings of the present application, such as the mutual combination of technical features between the embodiments, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A coil structure, characterized in that: The invention comprises an NFC coil and a wireless charging coil, wherein the number of turns of the wireless charging coil is at least two, and the NFC coil is arranged between every two adjacent turns of the wireless charging coil and is spaced apart from the wireless charging coil.

2. The coil structure according to claim 1, characterized in that: The distance between the NFC coil and the wireless charging coil is greater than or equal to 0.2 mm.

3. The coil structure according to claim 1, characterized in that: The NFC coil has a first NFC feed point and a second NFC feed point that are arranged at an interval, the first NFC feed point is connected to the head end of the NFC coil, the second NFC feed point is connected to the end of the NFC coil, and the first NFC feed point and the second NFC feed point are located outside the NFC coil and the wireless charging coil.

4. The coil structure according to claim 3, characterized in that: The wireless charging coil also includes a first wireless charging feed point and a second wireless charging feed point arranged at an interval, the first wireless charging feed point is connected to the head end of the wireless charging coil, the second wireless charging feed point is connected to the end of the wireless charging coil, and the first wireless charging feed point and the second wireless charging feed point are located outside the NFC coil and the wireless charging coil.

5. The coil structure according to claim 1 or 4, characterized in that: The intersection of the NFC coil and the wireless charging coil is connected through a via.

6. The coil structure according to claim 1, characterized in that: The planar shapes of the NFC coil and the wireless charging coil include at least one of a circle, a rectangle, a square, an ellipse and a triangle.

7. The coil structure according to claim 1, characterized in that: The distance between every two adjacent turns of the wireless charging coil is the same.

8. The coil structure according to claim 1, characterized in that: The distance between every two adjacent turns of the NFC coil is the same.

9. The coil structure according to claim 1, characterized in that: The distances between two adjacent turns of the wireless charging coil are different.

10. An electronic device, characterized in that: The invention comprises the coil structure as described in any one of claims 1 to 9.

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