A coil structure

Abstract

The present invention provides a coil structure, which integrates an NFC coil and a WPC coil into a set of coils, so that the entire structure occupies a small area and ensures the rapid and stable operation of the entire structure. It includes a base film, one side of the base film is convex to form a connection point arrangement area, the upper surface of the central area of ​​the base film is provided with a first coil structure, the central area of ​​the first coil structure is provided with a second small-diameter coil structure, the upper surface of the first coil structure is overlapped with a third coil structure, a radial position of the third coil structure is provided with a wire connection break area, the connection point arrangement area is provided with a first contact of the induction coil, a second contact of the induction coil, a starting end contact of the charging coil, a middle contact of the charging coil, and a terminal contact of the charging coil, and the third coil structure is overlapped with the upper area of ​​the first coil structure.

Description

Technical Field

[0001] The present invention relates to the technical field of wireless coil structures, and in particular to a coil structure. Background Art

[0002] The existing wireless coil structure specifically includes two structures, NFC coil and WPC coil. The effective length of the coil corresponding to the WPC coil structure is relatively long, and the effective length of the coil corresponding to the NFC coil is relatively short. When the two charging coils are integrated into one base film structure, an additional fpc board is required to drive the two independent coils separately, which makes the area occupied by the entire wireless charging coil relatively large, and does not take advantage of the miniaturized integrated layout of the mobile phone. Summary of the invention

[0003] In view of the above problems, the present invention provides a coil structure, which integrates the NFC coil and the WPC coil into a set of coils, so that the entire structure occupies a small area and ensures fast and stable operation of the entire structure.

[0004] A coil structure, characterized in that: it includes a base film, one side of the base film is convex to form a connection point arrangement area, the upper surface of the central area of ​​the base film is provided with a first coil structure, the central area of ​​the first coil structure is provided with a second small-diameter coil structure, the upper surface of the first coil structure is overlapped with a third coil structure, a radial position of the third coil structure is provided with a wire connection break area, the connection point arrangement area is provided with a first contact of the induction coil, a second contact of the induction coil, a starting end contact of the charging coil, a middle contact of the charging coil, and an end contact of the charging coil, the third coil structure is overlapped with the upper area of ​​the first coil structure, the two ends of each ring of the third coil structure are respectively connected to the first coil structure below through welding points, and the second small-diameter coil structure is not connected with the first coil structure and the third coil structure. The structure is connected, the first contact of the induction coil and the second contact of the induction coil are respectively connected to the corresponding ends of the second small-diameter coil structure after passing through the corresponding wires through the wires to connect the broken area, the starting end contact of the charging coil is connected to the starting end of the third coil structure after passing through the wires through the wires to connect the broken area, the middle contact of the charging coil is connected to the annular area of ​​the middle and rear ends of the length direction of the third coil structure after passing through the wires through the wires to connect the broken area, and the end contact of the charging coil is connected to the end of the third coil structure after passing through the wires through the wires to connect the broken area. An isolation film is provided at the position of the wire passing through the wire connecting the broken area and the upper surface of the first coil structure. The WPC coil is formed by a coil combination between the starting end contact of the charging coil and the end contact of the charging coil, and the NFC coil is formed by a coil combination between the middle contact of the charging coil and the end contact of the charging coil.

[0005] It is further characterized in that: the width of the wire connection break zone ensures the arrangement of five wires;

[0006] The thickness of the wire is equal to the thickness of the third coil structure, ensuring that the entire structure is arranged on the same plane;

[0007] The wire at the contact point in the middle of the charging coil is connected to the upper surface of the corresponding area of ​​the first coil structure in the wire connection break area, ensuring quick and convenient connection;

[0008] The connections at both ends of the wire are welded through corresponding welding points to ensure a stable and reliable connection;

[0009] The bottoms of the first coil structure and the second small-diameter coil structure are both attached to and connected to the upper surface of the base film, ensuring that the entire structure is stable and reliable.

[0010] Its working principle is as follows: the external structure of the coil also includes a switch switch. The second small-diameter coil transmits the generated induction signal to the induction IC. The induction IC confirms that it is an NFC signal or a WPC signal. The switch switch selects the corresponding communication IC according to the command of the induction IC, opens the corresponding NFC coil path or the WPC coil path, and the same coil realizes NFC and WPC functions at the same time. It integrates the NFC coil and the WPC coil into a set of coils, and the induction coil is built into the radial center area of ​​the WPC coil, so that the entire structure occupies a small area and ensures the fast and stable operation of the entire structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the front view of the present invention;

[0012] Figure 2 is a schematic diagram of the arrangement of contacts in the connection point arrangement area in a specific embodiment;

[0013] Figure 3 It is a schematic diagram of the application circuit structure of the present invention;

[0014] The names corresponding to the serial numbers in the figure are as follows:

[0015] Base film 1, first coil structure 2, second small diameter coil structure 3, third coil structure 4, first contact of induction coil 5, second contact of induction coil 6, starting end contact of charging coil 7, middle contact of charging coil 8, end contact of charging coil 9, wire connection breaking area 10, connection point arrangement area 11. DETAILED DESCRIPTION

[0016] A coil structure, see Figure 1: It includes a base film 1, one side of the base film 1 is convex to form a connection point arrangement area 11, a first coil structure 2 is arranged on the upper surface of the central area of ​​the base film 1, a second small-diameter coil structure 3 is arranged in the central area of ​​the first coil structure 2, a third coil structure 4 is overlapped on the upper surface of the first coil structure 2, a wire connection breaking area 10 is arranged at a radial position of the third coil structure 4, a first contact 5 of the induction coil, a second contact 6 of the induction coil, a charging coil starting end contact 7, a charging coil middle contact 8, and a charging coil end contact 9 are arranged on the connection point arrangement area 11, the third coil structure 6 is overlapped with the upper area of ​​the first coil structure 2, both ends of each ring of the third coil structure 4 are connected to the first coil structure 2 below through welding points, the second small-diameter coil structure 3 is not connected to the first coil structure 2 and the third coil structure 4, the first contact 5 of the induction coil, the second contact 6 of the induction coil, the charging coil starting end contact 7, the charging coil middle contact 8, and the charging coil end contact 9 are arranged on the connection point arrangement area 11, the third coil structure 6 is overlapped with the upper area of ​​the first coil structure 2, the two ends of each ring of the third coil structure 4 are respectively connected to the first coil structure 2 below through welding points, the second small-diameter coil structure 3 is not connected to the first coil structure 2 and the third coil structure 4, The second contacts 6 of the coil are connected to the corresponding ends of the second small-diameter coil structure 3 through corresponding wires passing through the wires to connect the broken areas. The starting end contact 7 of the charging coil is connected to the starting end of the third coil structure 4 through the wires passing through the wires to connect the broken areas 10. The middle contact 8 of the charging coil is connected to the annular area of ​​the middle and rear ends of the length direction of the third coil structure 4 through the wires passing through the wires to connect the broken areas 10. The end contact 9 of the charging coil is connected to the end of the third coil structure 4 through the wires passing through the wires to connect the broken areas 10. An isolation film (drawn in the figure, belonging to conventional isolation technology) is provided at the position where the wire passing through the wire to connect the broken areas 10 and the upper surface of the first coil structure 2. The WPC coil is formed by the coil combination between the starting end contact 7 of the charging coil and the end contact 9 of the charging coil. The NFC coil is formed by the coil combination between the middle contact 8 of the charging coil and the end contact 9 of the charging coil.

[0017] The width of the wire connection break zone 10 ensures the arrangement of five wires;

[0018] The thickness of the wire is equal to the thickness of the third coil structure 4, ensuring that the entire structure is arranged on the same plane;

[0019] The wire of the contact point 8 in the middle of the charging coil is connected to the upper surface of the corresponding area of ​​the first coil structure 2 of the wire connection break area 10, ensuring quick and convenient connection;

[0020] The connections at both ends of the wire are welded through corresponding welding points to ensure a stable and reliable connection;

[0021] The bottoms of the first coil structure 2 and the second small-diameter coil structure 3 are both in contact with the upper surface of the base film to ensure that the entire structure is stable and reliable.

[0022] For specific implementation, see Figure 2The marked port of the first contact 5 of the induction coil is 2, the marked port of the second contact 6 of the induction coil is 4, the marked port of the starting end contact 7 of the charging coil is 1, the marked port of the middle contact 8 of the charging coil is 3, and the marked port of the end contact 9 of the charging coil is 5. The first contact 5 of the induction coil and the second contact 6 of the induction coil are arranged on the relatively inner side of the connection point arrangement area 11, and the starting end contact 7 of the charging coil, the middle contact 8 of the charging coil, and the end contact 9 of the charging coil are arranged on the relatively outer side of the connection point arrangement area 11, ensuring convenient and reliable connection.

[0023] Its working principle is as follows: Figure 3 : The external structure of the coil also includes a switch. The second small-diameter coil transmits the generated induction signal to the induction IC. The induction IC confirms that it is an NFC signal or a WPC signal. The switch selects the corresponding communication IC according to the command of the induction IC, opens the corresponding NFC coil path or the WPC coil path, and the same coil realizes the NFC and WPC functions at the same time. It integrates the NFC coil and the WPC coil into a set of coils, and the induction coil is built into the radial center area of ​​the WPC coil, so that the entire structure occupies a small area and ensures the fast and stable operation of the entire structure.

[0024] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0025] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A coil structure, characterized in that: It includes a base film, one side of the base film is convex to form a connection point arrangement area, the upper surface of the central area of ​​the base film is provided with a first coil structure, the central area of ​​the first coil structure is provided with a second small-diameter coil structure, the upper surface of the first coil structure is overlapped with a third coil structure, a radial position of the third coil structure is provided with a wire connection break area, the connection point arrangement area is provided with a first contact of the induction coil, a second contact of the induction coil, a charging coil starting end contact, a charging coil middle contact, and a charging coil end contact, the third coil structure is overlapped with the upper area of ​​the first coil structure, the two ends of each ring of the third coil structure are respectively connected to the first coil structure below through welding points, the second small-diameter coil structure is not connected to the first coil structure and the third coil structure, the The first contact of the induction coil and the second contact of the induction coil are connected to the corresponding ends of the second small-diameter coil structure through the corresponding wires passing through the wires to connect the broken area, respectively; the starting end contact of the charging coil is connected to the starting end of the third coil structure through the wires passing through the wires to connect the broken area, and the middle contact of the charging coil is connected to the annular area of ​​the middle and rear ends of the length direction of the third coil structure through the wires passing through the wires to connect the broken area, and the end contact of the charging coil is connected to the end of the third coil structure through the wires passing through the wires to connect the broken area, and an isolation film is provided at the position of the wire passing through the wires to connect the broken area and the upper surface of the first coil structure, the WPC coil is formed by the coil combination between the starting end contact of the charging coil and the end contact of the charging coil, and the NFC coil is formed by the coil combination between the middle contact of the charging coil and the end contact of the charging coil; The width of the wire connection break zone ensures the arrangement of five wires; The wire of the middle contact point of the charging coil is connected to the upper surface of the corresponding area of ​​the first coil structure of the wire connection breaking area.

2. A coil structure according to claim 1, characterized in that: The two ends of the wire are connected by welding through corresponding welding points.

3. A coil structure according to claim 1, characterized in that: The bottoms of the first coil structure and the second small-diameter coil structure are both attached to and connected to the upper surface of the base film.

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