Two-in-one combined coil
By designing a two-in-one combination coil in the smart terminal, using the design of the double-layer sub-coil and conversion area, the problem of large space and low efficiency at the same time of NFC and wireless charging functions is solved, and more efficient charging and improvement are achieved Low fever.
Patent Information
- Application Number
- CN202420861412.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-24
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-04-24
Smart Images
Figure CN222145977U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of NFC and wireless charging, and in particular to a two-in-one combination coil. Background Art
[0002] With the miniaturization of wireless communication electronic products, NFC and wireless charging have become an indispensable part of smart terminals (such as smart phones or smart watches). NFC (Near Field Communication) is a contactless identification and interconnection technology that can perform short-range wireless communication between mobile devices, consumer electronics, PCs and smart control tools. Wireless charging technology refers to the use of principles such as electromagnetic induction and magnetic field resonance to transmit energy in the form of magnetic fields. No wires are required between the charging device and the power-consuming device. Smart terminals in related technologies can have both NFC and wireless charging functions, but both occupy a large space in smart terminals, generate high heat during wireless charging, and have poor charging efficiency. This situation needs to be changed. Utility Model Content
[0003] In view of this, the present application provides a two-in-one combination coil to solve the above-mentioned technical problems.
[0004] To achieve the above objectives, the technical solutions adopted are:
[0005] A two-in-one combination coil, comprising an NFC coil for near field communication and a wireless charging coil for wireless charging; the wireless charging coil is arranged inside the NFC coil, or the NFC coil is arranged outside the wireless charging coil with a distance; the wireless charging coil is designed in a circular ring structure, comprising a plurality of double-layer sub-coils arranged in sequence from outside to inside, the double-layer sub-coils having a double-layer circuit with a set number of turns; the wireless charging coil is divided into uniformly arranged conversion areas, and adjacent double-layer circuits or a pair of adjacent double-layer circuits in the double-layer sub-coils exchange positions in the conversion areas.
[0006] The present application is further configured as follows: the set number of turns is 2 turns.
[0007] The present application is further configured as follows: the double-layer sub-coil includes a first upper-layer circuit, a first lower-layer circuit corresponding to the first upper-layer circuit, a second upper-layer circuit, and a second lower-layer circuit corresponding to the second upper-layer circuit;
[0008] In the conversion area, the first upper layer circuit is integrally connected with an upper layer bending portion for exchanging positions, and the second lower layer circuit is integrally connected with a lower layer bending portion for exchanging positions, the first upper layer circuit is transformed to the second upper layer circuit position through the upper layer bending portion, and the second lower layer circuit is transformed to the first lower layer circuit position through the lower layer bending portion, wherein the bending directions of the upper layer bending portion and the lower layer bending portion are opposite.
[0009] The present application is further configured as follows: in the conversion area, the second upper layer line and the first lower layer line both have breaks, a gap is maintained between the break of the second upper layer line and the upper layer bending portion, and a gap is maintained between the break of the first lower layer line and the lower layer bending portion.
[0010] The present application is further configured as follows: via structures are provided at the head end and the tail end of the double-layer sub-coil, and at both ends of the upper-layer bending portion and the lower-layer bending portion; the first upper-layer circuit is connected to the first lower-layer circuit through the via structure, and the second upper-layer circuit is connected to the second lower-layer circuit through the via structure.
[0011] The present application is further configured as follows: the NFC coil is arranged at a distance outside the wireless charging coil and the NFC coil is designed in an L-shaped structure.
[0012] The present application is further configured as follows: in two adjacent double-layer sub-coils, the tail end of the double-layer sub-coil located on the outer side is connected to the head end of the double-layer sub-coil located on the inner side.
[0013] The present application is further configured as follows: in the wireless charging coil, the head end of the outermost double-layer sub-coil and the tail end of the innermost double-layer sub-coil are respectively connected to a first feeder pin, the NFC coil is provided with a second feeder pin, and the first feeder pin and the second feeder pin are arranged in parallel.
[0014] The present application is further configured as follows: the set number of turns is 4 turns.
[0015] The present application is further configured as follows: the double-layer sub-coil includes a first upper-layer circuit, a first lower-layer circuit corresponding to the first upper-layer circuit, a second upper-layer circuit, a second lower-layer circuit corresponding to the second upper-layer circuit, a third upper-layer circuit, a third lower-layer circuit corresponding to the third upper-layer circuit, a fourth upper-layer circuit, and a fourth lower-layer circuit corresponding to the fourth upper-layer circuit;
[0016] In the conversion area, the first upper layer line is changed to the third upper layer line position, the second upper layer line is changed to the fourth upper layer line position, the third lower layer line is changed to the first lower layer line position, and the fourth lower layer line is changed to the second lower layer line position.
[0017] In summary, compared with the prior art, the present application discloses a two-in-one combination coil, including an NFC coil for near field communication and a wireless charging coil for wireless charging, wherein the wireless charging coil is arranged inside the NFC coil or the NFC coil is arranged at a distance outside the wireless charging coil, wherein the wireless charging coil is designed in a circular ring structure and includes a plurality of double-layer sub-coils arranged in sequence from the outside to the inside, the double-layer sub-coil having a double-layer circuit with a set number of turns, and the wireless charging coil is divided into uniformly arranged conversion zones, and adjacent double-layer circuits of the double-layer sub-coil or a pair of adjacent double-layer circuits of the double-layer sub-coil interchange positions in the conversion zone, that is, through the above arrangement, the NFC and wireless charging functions are satisfied at the same time, the space utilization is improved, the heat generated by wireless charging is reduced, and the wireless charging efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. 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.
[0019] Figure 1 is a schematic structural diagram of the first two-in-one combination coil of this embodiment;
[0020] Figure 2 is a schematic diagram of the upper structure of the first wireless charging coil of this embodiment;
[0021] Figure 3 is a schematic diagram of the lower structure of the first wireless charging coil of this embodiment;
[0022] Figure 4 yes Figure 2 A magnified view of point B;
[0023] Figure 5 is a schematic structural diagram of the second two-in-one combination coil of this embodiment;
[0024] Figure 6 is a schematic diagram of the upper structure of the second wireless charging coil of this embodiment;
[0025] Figure 7 is a schematic diagram of the lower structure of the second wireless charging coil of this embodiment;
[0026] Figure 8 is a schematic structural diagram of the third two-in-one combination coil of this embodiment;
[0027] Fig. 9 is a schematic diagram of the upper structure of the third wireless charging coil of this embodiment;
[0028] Fig.10 Schematic diagram of the lower structure of the third wireless charging coil of this embodiment.
[0029] Figure numerals: 1. NFC coil; 2. wireless charging coil; 3. double-layer sub-coil; 41. first upper circuit; 42. first lower circuit; 43. second upper circuit; 44. second lower circuit; 45. third upper circuit; 46. third lower circuit; 47. fourth upper circuit; 48. fourth lower circuit; 5. conversion zone; 61. upper bending portion; 62. lower bending portion; 7. via structure; 8. first feed line pin; 9. second feed line pin; 100. two-in-one combination coil. DETAILED DESCRIPTION
[0030] Here, exemplary embodiments will be described in detail, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.
[0031] It should be noted that, in this article, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element. In addition, components, features, and elements with the same name in different embodiments of the present application may have the same meaning or different meanings, and their specific meanings need to be determined by their explanation in the specific embodiment or further combined with the context of the specific embodiment.
[0032] It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.
[0033] In the subsequent description, the suffixes such as "module", "component" or "unit" used to represent elements are only used to facilitate the description of the present application, and have no specific meanings. Therefore, "module", "component" or "unit" can be used in a mixed manner.
[0034] In the description of the present application, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0035] The technical solutions shown in this application will be described in detail below through specific embodiments. It should be noted that the description order of the following embodiments is not intended to limit the priority order of the embodiments.
[0036] As described in the background technology, in order to solve the problem that when a smart terminal has both NFC and wireless charging functions, both occupy a large space in the smart terminal, generate high heat during wireless charging, and have poor charging efficiency, this embodiment discloses a two-in-one combination coil.
[0037] refer to Figure 1 The two-in-one combination coil 100 of this embodiment includes an NFC coil 1 for near field communication and a wireless charging coil 2 for wireless charging, wherein the wireless charging coil 2 can be arranged inside the NFC coil 1, or the NFC coil 1 is arranged outside the wireless charging coil 2 at a distance.
[0038] The wireless charging coil 2 is designed as a circular ring structure, and includes a plurality of double-layer sub-coils 3 arranged in sequence from the outside to the inside, and the double-layer sub-coils 3 have a double-layer circuit with a set number of turns.
[0039] In the specific implementation process, the wireless charging coil 2 is divided into evenly arranged conversion areas 5, and the adjacent double-layer lines or a pair of adjacent double-layer lines in the double-layer sub-coil 3 can interchange positions in the conversion area 5, so as to ensure that the distribution of the current and magnetic field of the double-layer sub-coil 3 is more uniform, thereby effectively reducing the AC resistance of the wireless charging coil 2, reducing the heat generation of the wireless charging coil 2, and improving the efficiency of wireless charging.
[0040] Continue to combine Figure 2 , Figure 3 and Figure 4 In this embodiment, there can be 8 double-layer sub-coils 3, that is, the 8 double-layer sub-coils 3 are arranged in sequence from the outside to the inside, wherein, in order to form a closed-loop spiral arrangement of the double-layer sub-coils 3, in two adjacent double-layer sub-coils 3, the tail end of the double-layer sub-coil 3 located on the outside is connected to the head end of the double-layer sub-coil 3 located on the inside.
[0041] Furthermore, the center of the wireless charging coil 2 can be set as the midpoint Q. Then, in the wireless charging coil 2, the head end of the outermost double-layer sub-coil 3 and the tail end of the innermost double-layer sub-coil 3 are respectively connected to the first feeder pin 8, and the NFC coil 1 is provided with a second feeder pin 9. The first feeder pin 8 and the second feeder pin 9 are arranged in parallel to facilitate the external connection of the two-in-one combination coil.
[0042] It should be noted that, based on the circular structure of the wireless charging coil 2, the conversion area 5 can be regularly arranged on the wireless charging coil 2. Figure 1 , starting from area A, along the counterclockwise direction, conversion areas 5 can be set at 90°, 180°, and 270° respectively, then the adjacent double-layer lines or a pair of adjacent double-layer lines in the double-layer sub-coil 3 are interchanged in the above-mentioned multiple conversion areas 5, so as to achieve the purpose of exchanging the positions of the double-layer lines of the wireless charging coil 2 at a certain angle or a certain distance, thereby making the distribution of the current and magnetic field of the double-layer sub-coil 3 more uniform.
[0043] The double-layer sub-coil 3 of this embodiment has a double-layer circuit with a set number of turns, which may be 2 turns, that is, each double-layer sub-coil 3 may have two turns of the double-layer circuit, and the two turns of the double-layer circuit are interchanged in the conversion area 5 .
[0044] On the other hand, the number of turns can be set to 4 turns, then each double-layer sub-coil 3 can have 4 turns of double-layer circuits, and these 4 turns of double-layer circuits are interchanged in pairs or in pairs in the transition area 5. Specifically, the 4 turns of double-layer circuits are set to be a, b, c, and d arranged in sequence, then in the transition area 5, a and b positions can be interchanged and c and d positions can be interchanged, or a and c positions can be interchanged and b and d positions can be interchanged.
[0045] In order to keep the overall size of the wireless charging coil 2 unchanged, when the number of turns is set to 2, the number of double-layer sub-coils 3 is 8, and when the number of turns is set to 4, the number of double-layer sub-coils 3 is 4.
[0046] Combination Figure 1-Figure 4 The double-layer sub-coil 3 has 2 turns of double-layer circuits. In the specific implementation process, based on the double-layer structure design of the double-layer circuits, the double-layer sub-coil 3 may include a first upper circuit 41, a first lower circuit 42 corresponding to the first upper circuit 41, a second upper circuit 43, and a second lower circuit 44 corresponding to the second upper circuit 43.
[0047] Specifically, in each conversion area 5, the positions of the first upper layer circuit 41 and the second upper layer circuit 43 are interchanged, and the positions of the first lower layer circuit 42 and the second lower layer circuit 44 are interchanged.
[0048] Among them, the first upper layer circuit 41 is integrally connected with an upper layer bending portion 61 for exchanging positions, and the second lower layer circuit 44 is integrally connected with a lower layer bending portion 62 for exchanging positions. The first upper layer circuit 41 is transformed to the position of the second upper layer circuit 43 through the upper layer bending portion 61, and the second lower layer circuit 44 is transformed to the position of the first lower layer circuit 42 through the lower layer bending portion 62.
[0049] Taking into account the structural design of the double-layer sub-coil 3 with a double-layer structure and the flat and regular coil plane arrangement, when the second upper-layer circuit 43 changes position through the upper-layer bending portion 61 of the first upper-layer circuit 41, it is necessary to exchange the position with the first upper-layer circuit 41 through the break cooperation, and when the first lower-layer circuit 42 changes position through the lower-layer bending portion 62 of the second lower-layer circuit 44, it is also necessary to cooperate through the break.
[0050] That is, in the conversion area 5, the second upper circuit 43 and the first lower circuit 42 both have breaks, a gap is maintained between the break of the second upper circuit 43 and the upper bending portion 61, and a gap is maintained between the break of the first lower circuit 42 and the lower bending portion 62 to prevent accidental contact and short circuit.
[0051] In order to ensure that the double-layer sub-coil 3 has a smooth current channel, a via structure 7 is provided at the head end and the tail end of the double-layer sub-coil 3, and at both ends of the upper bending portion 61 and the lower bending portion 62. The first upper layer circuit 41 is connected to the first lower layer circuit 42 through the via structure 7, and the second upper layer circuit 43 is connected to the second lower layer circuit 44 through the via structure 7.
[0052] Then, during the process of changing position, the first upper layer circuit 41 has an upper layer bending portion 61 to maintain the connection after the position change, the second upper layer circuit 43 is connected to the second lower layer circuit 44 through the via structure 7, and the second lower layer circuit 44 maintains the connection after the position change through the lower layer bending portion 62. At the same time, the first lower layer circuit 42 is connected to the first upper layer circuit 41 through the via structure 7, that is, the via structure 7 at both ends of the upper layer bending portion 61 and the lower layer bending portion 62 ensures that the current of the double-layer sub-coil 3 flows smoothly before and after the position change. Inevitably, the bending directions of the upper layer bending portion 61 and the lower layer bending portion 62 are opposite.
[0053] The via structure 7 of this embodiment may be a columnar structure connecting the upper and lower layers of circuits.
[0054] Combination Figure 1 and Figure 5 In this embodiment, the wireless charging coil 2 can be arranged inside the NFC coil 1, or the NFC coil 1 can be arranged outside the wireless charging coil 2 at a distance, wherein the wireless charging coil 2 can be in a circular ring structure, and the NFC coil can be in a rectangular frame structure, so that this arrangement saves space in the smart terminal.
[0055] On the other hand, reference Figure 8 The NFC coil 1 can be arranged at a distance outside the wireless charging coil 2 and the NFC coil 1 is designed in an L-shaped structure. This arrangement saves space in the smart terminal.
[0056] It can be understood that no matter the wireless charging coil 2 is arranged inside the NFC coil 1, or the NFC coil 1 is arranged outside the wireless charging coil 2 at a distance, or the NFC coil 1 is designed in an L-shaped structure, the wireless charging coil 2 of this embodiment is divided into uniformly arranged conversion areas 5, and the adjacent double-layer circuits or a pair of adjacent double-layer circuits in the double-layer sub-coil 3 can be interchanged in the conversion area 5, wherein the double-layer sub-coil 3 has a double-layer circuit with a set number of turns, and the set number of turns can be 2 turns or 4 turns.
[0057] Continue to refer Figure 5 , Figure 6 and Figure 7 The double-layer sub-coil 3 has 4 turns of double-layer circuits. The 4 turns of double-layer circuits are set to be arranged in sequence of a, b, a, b. Then, in the conversion area 5, the positions of the two groups a and b can be interchanged, that is, the 4 turns of double-layer circuits can be two groups of a first upper circuit 41, a first lower circuit 42 corresponding to the first upper circuit 41, a second upper circuit 43, and a second lower circuit 44 corresponding to the second upper circuit 43.
[0058] That is, the double-layer sub-coil 3 in the conversion area 5 is expanded from 2 turns to 4 turns by the same position transformation method as the above embodiment, so as to adjust the wireless charging power of the double-layer sub-coil 3.
[0059] refer to Figure 8 , Fig. 9 and Fig.10 The double-layer sub-coil 3 has 4 turns of double-layer circuits. The 4 turns of double-layer circuits are set to be arranged in sequence of a, b, c, and d. Then, in the conversion area 5, the positions of a and c can be interchanged, and the positions of b and d can be interchanged. Based on the structure of the aforementioned embodiment, the double-layer circuits of the double-layer sub-coil 3 have a change in quantity.
[0060] Specifically, the double-layer line 4 may include a first upper line 41, a first lower line 42 corresponding to the first upper line 41, a second upper line 43, a second lower line 44 corresponding to the second upper line 43, a third upper line 45, a third lower line 46 corresponding to the third upper line 45, a fourth upper line 47, and a fourth lower line 48 corresponding to the fourth upper line 47.
[0061] It can be understood that the first upper circuit 41 and the second upper circuit 43 also have an upper bending portion 61, the third lower circuit 46 and the fourth lower circuit 48 also have a lower bending portion 62, and the bending directions of the upper bending portion 61 and the lower bending portion 62 are opposite, the third upper circuit 45, the fourth upper circuit 47, the first lower circuit 42 and the second lower circuit 44 also have a break, and a via structure 7 is provided at the head and tail ends of the double-layer sub-coil 3, and at both ends of the upper bending portion 61 and the lower bending portion 62. Then, in the conversion area 5, the first upper circuit 41 is changed to the position of the third upper circuit 45, the second upper circuit 43 is changed to the position of the fourth upper circuit 47, the third lower circuit 46 is changed to the position of the first lower circuit 42, and the fourth lower circuit 48 is changed to the position of the second lower circuit 44, which will not be repeated here.
[0062] In summary, the two-in-one combination coil 100 of the present embodiment includes an NFC coil 1 and a wireless charging coil 2. The wireless charging coil 2 is arranged inside the NFC coil 1 or the NFC coil 1 is arranged outside the wireless charging coil 2 at a distance. The wireless charging coil 2 is designed in a circular ring structure and includes a plurality of double-layer sub-coils 3 arranged in sequence from the outside to the inside. The double-layer sub-coil 3 has a double-layer circuit with a set number of turns. The wireless charging coil 2 is divided into uniformly arranged conversion areas 5. Adjacent double-layer circuits or a pair of adjacent double-layer circuits of the double-layer sub-coil 3 interchange positions in the conversion area 5, thereby simultaneously satisfying the NFC and wireless charging functions, improving space utilization, reducing heat generated by wireless charging, and improving wireless charging efficiency.
[0063] The above is a detailed introduction to the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the core idea of the present application. At the same time, for technical personnel in this field, according to the idea of the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.
Claims
1. A two-in-one combination coil, characterized in that: Includes an NFC coil for near field communication and a wireless charging coil for wireless charging; The wireless charging coil is disposed inside the NFC coil, or the NFC coil is arranged outside the wireless charging coil at a distance; The wireless charging coil is designed in a circular ring structure, which includes a plurality of double-layer sub-coils arranged in sequence from the outside to the inside, and the double-layer sub-coils have a double-layer circuit with a set number of turns; The wireless charging coil is divided into uniformly arranged conversion areas, and adjacent double-layer circuits or a pair of adjacent double-layer circuits in the double-layer sub-coil exchange positions in the conversion area.
2. The two-in-one combination coil according to claim 1, characterized in that: The set number of turns is 2 turns.
3. The two-in-one combination coil according to claim 1 or 2, characterized in that: The double-layer sub-coil includes a first upper-layer circuit, a first lower-layer circuit corresponding to the first upper-layer circuit, a second upper-layer circuit, and a second lower-layer circuit corresponding to the second upper-layer circuit; In the conversion area, the first upper layer circuit is integrally connected with an upper layer bending portion for exchanging positions, and the second lower layer circuit is integrally connected with a lower layer bending portion for exchanging positions, the first upper layer circuit is transformed to the second upper layer circuit position through the upper layer bending portion, and the second lower layer circuit is transformed to the first lower layer circuit position through the lower layer bending portion, wherein the bending directions of the upper layer bending portion and the lower layer bending portion are opposite.
4. The two-in-one combination coil according to claim 3, characterized in that: In the conversion area, both the second upper layer line and the first lower layer line have breaks, a gap is maintained between the break of the second upper layer line and the upper layer bending portion, and a gap is maintained between the break of the first lower layer line and the lower layer bending portion.
5. The two-in-one combination coil as claimed in claim 3, characterized in that: Via structures are provided at the head end and tail end of the double-layer sub-coil, and at both ends of the upper layer bending portion and the lower layer bending portion. The first upper layer circuit is connected to the first lower layer circuit through the via structure, and the second upper layer circuit is connected to the second lower layer circuit through the via structure.
6. The two-in-one combination coil according to claim 1, characterized in that: The NFC coil is arranged at a distance outside the wireless charging coil and is designed in an L-shaped structure.
7. The two-in-one combination coil according to claim 1, characterized in that: In two adjacent double-layer sub-coils, the tail end of the double-layer sub-coil located on the outer side is connected to the head end of the double-layer sub-coil located on the inner side.
8. The two-in-one combination coil according to claim 1, characterized in that: In the wireless charging coil, the head end of the outermost double-layer sub-coil and the tail end of the innermost double-layer sub-coil are respectively connected to a first feeder pin, the NFC coil is provided with a second feeder pin, and the first feeder pin and the second feeder pin are arranged in parallel.
9. The two-in-one combination coil according to claim 1, characterized in that: The set number of turns is 4 turns.
10. The two-in-one combination coil according to claim 1 or 9, characterized in that: The double-layer sub-coil includes a first upper-layer circuit, a first lower-layer circuit corresponding to the first upper-layer circuit, a second upper-layer circuit, a second lower-layer circuit corresponding to the second upper-layer circuit, a third upper-layer circuit, a third lower-layer circuit corresponding to the third upper-layer circuit, a fourth upper-layer circuit, and a fourth lower-layer circuit corresponding to the fourth upper-layer circuit; In the conversion area, the first upper layer line is changed to the third upper layer line position, the second upper layer line is changed to the fourth upper layer line position, the third lower layer line is changed to the first lower layer line position, and the fourth lower layer line is changed to the second lower layer line position.