Coil and generator

Abstract

The present invention provides a coil and a generator. In the coil and generator provided by the present invention, the generator coil includes a housing and an inner channel disposed in the housing. A conductive material layer is formed by filling the inner channel, thereby providing a generator that is different from traditional enameled wire and can achieve miniaturization.

Description

Technical Field

[0001] The present invention relates to the field of microelectronic machinery (MEMS), and in particular to a coil and a generator. Background Art

[0002] Existing generators are wound with enameled wires so that the coils cut the magnetic flux lines to achieve the purpose of generating electricity.

[0003] However, it is difficult to miniaturize enameled wire to the millimeter level, micron level, or even smaller. Summary of the Invention

[0004] The object of the present invention is to provide a coil and a generator to realize a micro coil and a micro generator.

[0005] In order to solve the above technical problems, according to the first aspect of the present invention, a coil is provided, which includes a shell and an inner channel with multiple turns arranged in the shell, the inner channel is filled with a conductive material layer, and two ends of the conductive material layer are respectively led out to two connecting poles on the side of the shell.

[0006] Optionally, for the coil, the two connecting poles at both ends of the conductive material layer are located on the same surface, and the connecting poles belonging to the same end are located on opposite sides.

[0007] According to a second aspect of the present invention, a generator is provided, comprising the coil according to the first aspect.

[0008] Optionally, the generator includes a housing, magnets arranged in the housing, and coils corresponding to the magnets one by one, the magnetic poles of adjacent magnets are arranged in opposite directions, and adjacent coils are connected in opposite directions.

[0009] Optionally, the generator further includes a metal sheet disposed inside the shell.

[0010] Optionally, for the generator, the outer edge of the metal sheet has a plurality of teeth, and each of the teeth is arranged in a through hole of the coil.

[0011] Optionally, for the generator, the adjacent coils at the same end and with similar connection poles are connected by bonding, leaving a pair of adjacent coils that are not connected to each other but are led out to a circuit board.

[0012] According to a third aspect of the present invention, a coil is provided, comprising a plurality of coil units, each coil unit comprising a shell and an inner channel having multiple turns arranged in the shell, the inner channel being filled with a conductive material layer, the two ends of the conductive material layer of one coil unit being respectively connected to the outer ends and inner ends of the conductive material layers of two adjacent coil units, and the adjacent outer ends or inner ends lead out to connecting poles.

[0013] Optionally, for the coil, the conductive material layer of the first coil unit is rotated clockwise from the inside to the outside and is connected at the outer end to the outer end of the conductive material layer of the adjacent second coil unit, and the conductive material layer of the second coil unit is rotated counterclockwise from the outside to the inside and is connected at the inner end to the inner end of the conductive material layer of the adjacent third coil unit.

[0014] According to a fourth aspect of the present invention, there is provided a generator comprising the coil according to the third aspect.

[0015] Optionally, the generator includes a shell, and magnets and the coils are arranged inside the shell, the magnets correspond one-to-one to the coil units, and the magnetic poles of adjacent magnets are arranged in opposite directions.

[0016] Optionally, the generator further includes a metal sheet disposed inside the shell.

[0017] Optionally, for the generator, the outer edge of the metal sheet has a plurality of teeth, and each of the teeth is arranged in a through hole of the coil.

[0018] Optionally, for the generator, a pair of adjacent coil units are not connected to each other but are led out to a circuit board.

[0019] In the coil and generator provided by the present invention, the coil of the generator includes a shell and an inner channel arranged in the shell. A conductive material layer is formed by filling the inner channel, thereby providing a generator that is different from traditional enameled wires and can achieve miniaturization. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the structure of the coil in embodiment 1 of the present invention Figure 1 ;

[0021] Figure 2 Schematic diagram of the structure of the coil in embodiment 1 of the present invention Figure 2 ;

[0022] Figure 3 The structure of the generator in the second embodiment of the present invention is shown as follows Figure 1 ;

[0023] Figure 4 The structure of the generator in the second embodiment of the present invention is shown as follows Figure 2 ;

[0024] Figure 5A Schematic diagram of the structure of the coil of the generator in the second embodiment of the present invention Figure 1 ;

[0025] Figure 5BSchematic diagram of the structure of the coil of the generator in the second embodiment of the present invention Figure 2 ;

[0026] Figure 6 This is a schematic structural diagram of the generator in Embodiment 2 of the present invention after the coil is removed;

[0027] Figure 7 Schematic diagram of the relationship between the metal sheet and the coil in the second embodiment of the present invention;

[0028] Figure 8 Schematic diagram of the structure of the coil in the third embodiment of the present invention;

[0029] Figure 9 The structure of the generator in the fourth embodiment of the present invention is shown as follows Figure 1 ;

[0030] Figure 10 The structure of the generator in the fourth embodiment of the present invention is shown as follows Figure 2 ;

[0031] Figure 11 Schematic diagram of the structure of the metal sheet in the fourth embodiment of the present invention;

[0032] Figure 12 Schematic diagram of the relationship between the metal sheet and the coil in the fourth embodiment of the present invention Figure 1 ;

[0033] Figure 13 Schematic diagram of the relationship between the metal sheet and the coil in the fourth embodiment of the present invention Figure 2 ;

[0034] Figure 14 Schematic diagram of the relationship between the metal sheet and the coil in the fourth embodiment of the present invention Figure 3 . DETAILED DESCRIPTION

[0035] The coil and generator proposed in the present invention are further described in detail below, with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are highly simplified and not to exact scale, and are intended solely to facilitate and clarify the purpose of illustrating the embodiments of the present invention.

[0036] Example 1

[0037] Figure 1 The figure is a schematic diagram of the structure of a coil in one embodiment of the present invention. The coil 2 in the embodiment of the present invention comprises a housing 21 and an inner channel with multiple turns provided in the housing 21. The inner channel is filled with a conductive material layer 22. Two ends of the conductive material layer 22 lead to two connection electrodes on the side of the housing 21. Figure 1As shown, two connecting electrodes 231 are led out from one end, and two connecting electrodes 232 are led out from the other end.

[0038] The connecting pole 23 is preferably arranged at the edge of the housing so as to be led out or connected to other connecting poles.

[0039] Specifically, the two connecting electrodes at both ends of the conductive material layer 22 are located on the same surface, and the connecting electrodes belonging to the same end are located on opposite sides. Further, each connecting electrode is closer to the respective end of the conductive material layer, that is, Figure 2 As shown, the connecting electrode 232 is led out from the inner end of the conductive material layer 22 , and the connecting electrode 231 is led out from the outer end of the conductive material layer 22 . The connecting electrode 232 is closer to the inner end than the connecting electrode 231 , while the connecting electrode 231 is closer to the outer end.

[0040] The arrangement of the connecting pole of the present invention can be more conveniently used in other structures.

[0041] In the embodiment of the present invention, the housing 21 may be made of silicon, for example. In addition, other suitable materials may be selected according to actual needs.

[0042] The housing 21 may be, for example, in the shape of a long cylinder with an opening in the middle.

[0043] Specifically, for example, it may be a structure surrounded by four side walls.

[0044] Furthermore, according to actual needs, the shape of the shell 21 can be other forms, such as a triangular prism, a polygon, etc.

[0045] In addition, the shape of the housing 21 can be deformed based on the above, for example, gradually becoming thinner from one end to the other end.

[0046] The housing 21 may also be in other forms, that is, any structure that can have an internal channel to form a conductive material layer can be considered as the housing described in the present invention.

[0047] Please refer to Figure 2 , which illustrates a schematic diagram of a conductive material layer 22 provided in an inner channel in one embodiment of the present invention.

[0048] In the embodiment of the present invention, the line width of the conductive material layer may be less than 20 microns, thus being able to greatly reduce the size.

[0049] Therefore, the present invention realizes the miniaturization of the coil, which can reach the micron level, avoids the coil form of the enameled wire in the prior art, and can flexibly select the required conductive circuit through the provision of multiple connecting poles.

[0050] Example 2

[0051] A second embodiment of the present invention provides a generator, comprising the coil as described in the first embodiment.

[0052] Specifically, such as Figure 3-Figure 4 As shown, the generator includes a housing 1, and magnets 3 and coils 2 disposed within the housing 1 in a one-to-one correspondence. Adjacent magnets 3 have opposite magnetic poles, and adjacent coils 2 are connected in opposite directions. Thus, when an external circuit board is connected, a closed magnetic circuit is formed between the two coils. By rotating the housing 1, power generation can be achieved.

[0053] In the embodiment of the present invention, the housing 1 is cylindrical, and the magnets 3 are evenly distributed on the inner wall of the housing 1. Correspondingly, the coils 2 can also be evenly distributed.

[0054] The coil 2 may be disposed near one end of the magnet 3 .

[0055] like Figure 5A As shown, multiple coils 2 are arranged in a circle. The figure does not show the connection of the connecting poles of adjacent coils. Those skilled in the art can connect them according to their needs and based on the concept of the present invention.

[0056] In this embodiment, the adjacent coils 2 are connected in reverse. Specifically, two winding methods are listed below to illustrate different connection methods. Please refer to Figure 5B As shown, coils X, Y, and Z are used as examples. Coils X, Y, and Z have the same structure and consistent winding directions. They all include a conductive material layer and connecting terminals A1, A2, B1, and B2 at their ends. Connecting terminal B2 of coil X is connected to connecting terminal B1 of coil Y via bonding wire 9, and connecting terminal A2 of coil Y is connected to connecting terminal A1 of coil Z via bonding wire 9. This connection is achieved through analogy, achieving the coil connection of the present invention.

[0057] That is, the coils may have the same structure as adjacent coils, with the outer ends of adjacent coils connected by bonding, and the inner ends of another adjacent coil being connected by bonding.

[0058] In addition, the winding directions of adjacent coils may be opposite to each other, so that the required conductive material layers can be selected and connected end to end in sequence.

[0059] In the embodiment of the present invention, there is no limit on the number of the coils 2 .

[0060] Please refer to Figure 6 As shown, a metal sheet 4 is further included and is disposed in the housing 1. The metal sheet can be made of, for example, silicon steel in order to improve magnetic permeability.

[0061] like Figure 6 and Figure 7As shown, the outer edge of the metal sheet 4 has a plurality of teeth 41 , and each of the teeth 41 is disposed in a through hole 24 of the coil.

[0062] In the embodiment of the present invention, any pair of adjacent coils 2 are led out to a circuit board, thereby realizing the collection and utilization of electric energy. Figure 5A and Figure 5B In the structure shown, B2 and B1 are not connected, but are led out to the circuit board through wires respectively.

[0063] The circuit board may be disposed below the coil in the housing 1 , or in other feasible locations.

[0064] Based on this, the present invention can realize a miniaturized generator.

[0065] In one example, with 12 coils and a rotation speed of approximately 1400 rpm, the peak voltage reached 2.1V and the short-circuit current reached 8.8mA. This can be applied to system-on-chips to achieve autonomous power supply without the need for an external power supply.

[0066] Example 3

[0067] The embodiment of the present invention provides a coil 20, please refer to Figure 8 , and combined with Figure 12-14 As shown, it includes multiple coil units, each coil unit includes a shell and an inner channel with multiple turns arranged in the shell, the inner channel is filled with a conductive material layer 202, and the two ends of the conductive material layer of one coil unit are respectively connected to the outer end and the inner end of the conductive material layer of the two adjacent coil units.

[0068] Since the conductive material layer 202 in the embodiment of the present invention is disposed in the housing, for the convenience of illustration, the housing is omitted and only the conductive material layer 202 is illustrated.

[0069] The number of the coil units is more than 3, for example, 10-100, or other numbers.

[0070] In this embodiment, the conductive material layer 202 of the first coil unit is wound clockwise from the inside to the outside and connected at the outer end to the outer end of the conductive material layer of the adjacent second coil unit. The conductive material layer of the second coil unit is rotated counterclockwise from the outside to the inside and connected at the inner end to the inner end of the conductive material layer of the adjacent third coil unit.

[0071] Since the multiple coil units are arranged in a ring shape, the outer edge of the ring is the outer end, and the part close to the center is the inner end.

[0072] The coils may be arranged in a divergent shape, that is, each coil unit is thinner near the inner end and thicker near the outer end.

[0073] In the embodiment of the present invention, the housing may be made of silicon, for example. In addition, other suitable materials may be selected according to actual needs.

[0074] The housing may be, for example, in the shape of a pancake with a through hole in the middle, and may also be provided with a plurality of through holes along the radial direction.

[0075] Furthermore, according to actual needs, the shape of the shell can be other forms, such as polygonal.

[0076] Therefore, the present invention realizes the miniaturization of the coil, which can reach the micron level or even smaller, avoiding the coil form of the enameled wire in the prior art, and the coil is directly composed of multiple coil units, without the need to set up multiple coils, thereby improving reliability and reducing process requirements.

[0077] This embodiment may include variations, such as the winding directions of adjacent coil units being opposite.

[0078] Example 4

[0079] The embodiment of the present invention provides a generator, please refer to Figure 9 As shown, it includes the coil as described in the third embodiment.

[0080] Specifically, the generator according to the embodiment of the present invention further includes a housing 10, magnets 30 and coils 20 disposed within the housing 10. The magnets 30 correspond one-to-one with the coil units, and adjacent magnets 30 have opposite magnetic poles. Thus, after connecting an external circuit board, a closed magnetic circuit is formed between the magnets 30. Rotating the housing 1 enables power generation.

[0081] In the embodiment of the present invention, the housing 10 is cylindrical, and the magnets 30 are evenly distributed on the inner wall of the housing 10. Correspondingly, the coils 20 may also be evenly distributed.

[0082] The coil 20 may be disposed near one end of the magnet 30 .

[0083] Specifically, a metal sheet 40 is further included and is disposed in the housing 10. The metal sheet 40 can be made of, for example, silicon steel to improve magnetic permeability.

[0084] Please refer to Figure 11-14 As shown, the outer edge of the metal sheet 40 has a plurality of teeth 401 , and each of the teeth 401 is disposed in a through hole of the coil unit.

[0085] In an embodiment of the present invention, a pair of adjacent coil units are not connected to each other but the outer ends and / or inner ends are led out to a circuit board, thereby realizing the collection and utilization of electric energy.

[0086] The coil preparation method of the present invention can be mainly formed by using micro-casting technology. In addition, other processes can also be used to achieve it, and the present invention does not impose any special restrictions on this.

[0087] It is understandable that those skilled in the art may make other feasible changes based on the above embodiments.

[0088] In summary, in the coil and generator provided in this embodiment, the coil of the generator includes a shell and an inner channel arranged in the shell. A conductive material layer is formed by filling the inner channel, thereby providing a generator that is different from traditional enameled wire and can achieve miniaturization.

[0089] The above description is only a description of the preferred embodiments of the present invention and does not limit the scope of the present invention. Any changes and modifications made by ordinary technicians in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A coil, characterized in that: The coil comprises a shell (21) and an inner channel with multiple turns arranged in the shell, wherein the inner channel is filled with a conductive material layer (22), wherein the shell (21) of the coil is flat, and the size of the coil is micrometer level or below; Two connecting electrodes (23) are respectively led out from both ends of the conductive material layer (22) on the side of the shell, and the two connecting electrodes at both ends of the conductive material layer (22) are located on the same surface, and the connecting electrodes belonging to the same end are located on opposite sides; The first connecting electrode (231) is led out from the outer end of the conductive material layer (22), and the second connecting electrode (232) is led out from the inner end of the conductive material layer (22). Compared with the first connecting electrode (231), the second connecting electrode (232) is closer to the inner end of the conductive material layer (22), and the first connecting electrode (231) is closer to the outer end of the conductive material layer (22).

2. A generator, characterized in that: Comprising the coil as claimed in claim 1.

3. The generator according to claim 2, characterized in that The invention comprises a shell, a magnet (3) arranged in the shell, and coils (2) corresponding to the magnets (3) one by one, wherein the magnetic poles of adjacent magnets are arranged in opposite directions, and adjacent coils are connected in opposite directions.

4. The generator according to claim 3, characterized in that It also includes a metal sheet (4) arranged in the housing, the outer edge of the metal sheet having a plurality of teeth (41), and each of the teeth is arranged in a through hole (24) of the coil.

5. The generator according to claim 4, characterized in that The adjacent coils have the same ends and are close to each other via bonding, leaving a pair of adjacent coils that are not connected to each other but are led out to a circuit board.

6. A coil (20), characterized in that The invention comprises a plurality of coil units, each coil unit comprising a shell and an inner channel with multiple turns arranged in the shell, the inner channel being filled with a conductive material layer (202), and the two ends of the conductive material layer of one coil unit being respectively connected to the outer end and the inner end of the conductive material layer of two adjacent coil units; Wherein, the shell is flat, and the size of the coil is micron-level or below; The conductive material layer of the first coil unit is wound clockwise from the inside to the outside and connected at the outer end to the outer end of the conductive material layer of the adjacent second coil unit. The conductive material layer of the second coil unit is rotated counterclockwise from the outside to the inside and connected at the inner end to the inner end of the conductive material layer of the adjacent third coil unit.

7. A generator, characterized in that: Comprising the coil as claimed in claim 6.

8. The generator according to claim 7, characterized in that It comprises a shell, a magnet (30) and a coil (20) arranged in the shell, wherein the magnets correspond to the coil units one by one, and the magnetic poles of adjacent magnets are arranged in opposite directions.

9. The generator according to claim 8, characterized in that It also includes a metal sheet (40) arranged in the housing, wherein the outer edge of the metal sheet has a plurality of teeth (401), and each of the teeth is arranged in a through hole (24) of the coil.

10. The generator according to claim 9, characterized in that A pair of adjacent coil units are left unconnected but are led out to a circuit board.

Images