CN221805216U

CN221805216U - A hybrid wireless charging coil and electronic equipment

Info

Publication number: CN221805216U
Application number: CN202420248534.5U
Authority: CN
Inventors: 卢云; 余银银
Original assignee: Shenzhen Haidemen Electronics Co ltd
Current assignee: Shenzhen Haidemen Electronics Co ltd
Priority date: 2024-01-31
Filing date: 2024-01-31
Publication date: 2024-10-01
Anticipated expiration: 2034-01-31

Abstract

The application provides a strand number hybrid wireless charging coil and electronic equipment. The strand number hybrid wireless charging coil comprises a first main coil, an insulating layer and a second main coil; the first main coil comprises a first sub-coil with a first number of turns and a second sub-coil with a second number of turns, the first end of the first sub-coil is used as a first leading-out end, the second end of the first sub-coil is electrically connected with the first end of the second sub-coil, and the number of strands of conductive wires arranged in each turn of the first sub-coil and each turn of the second sub-coil is different; the insulating layer is arranged between the first main coil and the second main coil, the second main coil is electrically connected with the first main coil through a via hole penetrating through the insulating layer, and one of the second leading-out end and the first leading-out end of the second main coil is used as an input end of the wireless charging coil, and the other is used as an output end. The application can realize the adjustment of the coil number of the wireless charging coil within the limited size and thickness limit range so as to meet different performance requirements.

Description

Stock-number hybrid wireless charging coil and electronic equipment

Technical Field

The application relates to the technical field of wireless charging, in particular to a share-number hybrid wireless charging coil and electronic equipment.

Background

Compared with the traditional wired charging mode, the wireless charging is realized by transmitting energy between the charger and the power utilization device through the technical principles of electromagnetic induction, magnetic field resonance, electric field coupling and the like, so that the wire connection between the charger and the power utilization device can be canceled, and a more convenient mobile charging mode is realized. With the development of wireless communication technology, wireless charging functions are increasingly applied to electronic equipment products such as mobile phones, tablet computers, smart watches and the like. With the development of electronic intelligent products, the functions of the electronic intelligent products are more and more powerful, the corresponding electronic equipment products are smaller and thinner, and the size space reserved for wireless charging is limited. Wireless charging is required to meet various performance requirements within limited size and thickness constraints.

Most of the existing wireless charging coils are spirally wound by fixed-strand wires, and the coil arrangement mode has a relatively simple wire structure, so that the performance of the wireless charging coils in a limited size and thickness limit range is relatively fixed, and specific performance requirements are difficult to meet.

Disclosure of utility model

In view of the above, the present application provides a stock hybrid wireless charging coil and an electronic device, which can solve the problem that the performance of the wireless charging coil is relatively fixed within the limited size and thickness limits.

The application provides a strand number hybrid wireless charging coil, which comprises:

The first main coil comprises a first sub-coil with a first number of turns and a second sub-coil with a second number of turns, the first end of the first sub-coil is used as a first leading-out end, the second end of the first sub-coil is electrically connected with the first end of the second sub-coil, and the number of strands of conductive wires arranged in each turn of the first sub-coil and each turn of the second sub-coil is different;

an insulating layer;

The second main coil is arranged between the first main coil and the second main coil, the second main coil is electrically connected with the first main coil through a via hole penetrating through the insulating layer, the second main coil is further provided with a second leading-out end, one of the second leading-out end and the first leading-out end is used as an input end of the stock number hybrid wireless charging coil, and the other is used as an output end of the stock number hybrid wireless charging coil.

Optionally, the number of the conductive wires arranged on the second main coil and the first main coil is the same, and the conductive wires are arranged in a one-to-one correspondence manner; and the through holes are respectively arranged at the head end and the tail end of each conductive wire along the winding direction, and the conductive wires which are arranged in one-to-one correspondence up and down are connected in parallel through the through holes.

Optionally, the second main coil includes a third sub-coil with a third turn and a fourth sub-coil with a fourth turn, and the number of strands of the conductive wire set by each of the fourth sub-coil and each of the second sub-coils is the same; each turn of the third sub-coil comprises only one strand of the electrically conductive wire.

Optionally, the number of turns of the third sub-coil is equal to the number of strands of the conductive wire provided by the second sub-coil.

Optionally, the second end of the second sub-coil is connected in series with the second main coil through the via hole.

Optionally, the via hole is located at an innermost ring of the first main coil and the second main coil.

Optionally, the second main coil includes a third sub-coil with a third number of turns and a fourth sub-coil with a fourth number of turns, the number of strands of the conductive wire set by each of the fourth sub-coil and each of the second sub-coils is the same, and the number of strands of the conductive wire set by each of the third sub-coil and each of the first sub-coils is the same.

Optionally, the winding direction of the first main coil is opposite to the winding direction of the second main coil.

Optionally, the portion of the first lead-out end extending out of the first main coil and the portion of the second lead-out end extending out of the second main coil are overlapped.

The application provides electronic equipment, which comprises any strand of mixed wireless charging coil.

As described above, the wireless charging coil of the application comprises the first sub-coil with the first number of turns and the second sub-coil with the second number of turns, and the number of strands of the conductive wire arranged in each of the first sub-coil and the second sub-coil is different, that is, the wireless charging coil can realize the adjustment of the number of turns within the limited size and thickness limit range by mixing the coils with different numbers of strands.

Drawings

Fig. 1 is a top view of a first main coil of a strand hybrid wireless charging coil according to a first embodiment of the present application;

fig. 2 is an enlarged schematic view of the structure of the broken line-defined area a shown in fig. 1;

fig. 3 is a top view illustrating a structure of a second main coil of a strand hybrid wireless charging coil according to a first embodiment of the present application;

fig. 4 is an enlarged schematic view of the structure of the broken line defining area B shown in fig. 3;

Fig. 5 is a top view illustrating a structure of a first main coil of a strand hybrid wireless charging coil according to a second embodiment of the present application;

fig. 6 is an enlarged schematic view of the structure of the broken line-defined area C shown in fig. 5;

Fig. 7 is a top view illustrating a structure of a second main coil of a strand hybrid wireless charging coil according to a second embodiment of the present application;

Fig. 8 is an enlarged schematic view of the structure of the broken line-defined area D shown in fig. 7.

Detailed Description

In order to solve the above problems in the prior art, the present application provides a strand hybrid wireless charging coil and an electronic device. The two protection subject matters are based on the same conception, the principles for solving the problems are basically the same or similar, and the embodiments of each protection subject matter can be referred to each other, and the repetition is omitted.

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be clearly described below with reference to specific embodiments and corresponding drawings. It will be apparent that the embodiments described below are only some, but not all, embodiments of the application. Under the condition of no conflict, the following embodiments and technical features thereof can be combined with each other and also belong to the technical scheme of the application.

In the description of the embodiments of the present application, the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the technical solutions of the respective embodiments, and do not indicate or imply that the devices or elements must have a specific orientation, be configured and operated in a specific orientation, and are not to be construed as limiting the present application.

The strand hybrid wireless charging coil (also called as wireless charging coil) comprises a first main coil, an insulating layer and a second main coil, wherein the insulating layer is arranged between the first main coil and the second main coil.

The first main coil comprises a first sub-coil with a first number of turns and a second sub-coil with a second number of turns, and the first sub-coil and the second sub-coil are formed by spirally winding a conductive wire (such as a conductive sheet with a preset width or a wire with a preset diameter) along a preset direction. In the spiral winding direction of the first main coil, for example, in the counterclockwise direction in fig. 1 and 3, a first end (may be referred to as a head end) of the first sub-coil serves as a first lead-out end, and a second end (may be referred to as a tail end) of the first sub-coil is electrically connected to a first end of the second sub-coil, and the number of strands of the conductive wire disposed in each turn of the first sub-coil and each turn of the second sub-coil is different.

The second main coil is electrically connected to the first main coil through a via penetrating the insulating layer, it being understood that the via may be realized by a drilling and copper plating process in a practical process. The second main coil is also provided with a second leading-out end, one of the second leading-out end and the first leading-out end of the first main coil is used as an input end of the strand hybrid wireless charging coil, and the other is used as an output end of the strand hybrid wireless charging coil. In the scene that wireless charging coil carries out wireless charging, first leading-out end and second leading-out end connect the electricity respectively.

As described above, the number of strands of the conductive wire can be regarded as the coil number of the wireless charging coil, and the wireless charging coil can realize the adjustment of the coil number within the limited size and thickness limit range by mixing different strands, and realize the parameters such as the resistance and the inductance of the wireless charging coil different from the traditional fixed coil number within the same size and thickness range, thereby meeting different performance requirements.

In an actual scene, the electrical connection mode of the first main coil and the second main coil is adaptive. The following is an exemplary description in parallel and series fashion, in combination with the specific number of strands of conductive wire for each coil.

Example 1

Referring to fig. 1 to 4 together, the strand hybrid wireless charging coil provided in the present embodiment includes a first main coil 1, a second main coil 2, and an insulating layer (not shown) disposed below the first main coil 1, wherein the insulating layer is disposed between the first main coil 1 and the second main coil 2 and is used for electrically insulating the first main coil 1 and the second main coil 2 as a whole.

The first main coil 1 includes a first sub-coil 11 of a first turn number m ₁ and a second sub-coil 12 of a second turn number m ₂, and as shown in fig. 1 and 2, the first main coil 1 is provided with 4 turns of the first sub-coil 11 and 5 turns of the second sub-coil 12, i.e., m ₁＝4,m₂ =5. The first sub-coil 11 and the second sub-coil 12 are each spirally wound in the counterclockwise direction by the conductive wire 13. Along the spiral winding direction of the first main coil 1, the first end of the first sub-coil 11 serves as a first lead-out end 10, the second end of the first sub-coil 11 is electrically connected to the first end of the second sub-coil 12, and in the scenario shown in fig. 2, the first end of the second sub-coil 12 (and the four conductive wires 13 thereof) are marked with diagonal hatching to facilitate identification. The number of strands of the conductive wire 13 provided for each turn of the first sub-coil 11 and each turn of the second sub-coil 12 is different. For example, in the scenario shown in fig. 1 and 2, each turn of the first sub-coil 11 comprises two conductive lines 13 and each turn of the second sub-coil 12 comprises four conductive lines 13.

The second main coil 2 is electrically connected with the first main coil 1 through a via hole 4 penetrating through the insulating layer, and the second main coil 2 is further provided with a second leading-out end 20, one of the second leading-out end 20 and the first leading-out end 10 of the first main coil 1 is used as an input end of the wireless charging coil, and the other is used as an output end thereof.

The second main coil 2 includes a third sub-coil 21 of a third turn number m ₃ and a fourth sub-coil 22 of a fourth turn number m ₄, and as shown in fig. 3 and 4, the second main coil 2 is provided with 24 turns of the third sub-coil 21 and 4 turns of the fourth sub-coil 22, i.e., m ₃＝24,m₄ =4. The number of the conductive wires 13 provided in the second main coil 2 and the first main coil 1 is the same, and the conductive wires are provided in one-to-one correspondence up and down (in the top view direction). The second end of the second sub-coil 12 is disposed up and down with the end of the fourth sub-coil 22 connected to the second lead-out terminal 20. The number of the conductive wires 13 provided in each of the fourth sub-coil 22 and the second sub-coil 12 is the same, for example, four conductive wires 13 are provided in the figure. Each turn of the third sub-coil 21 comprises only one strand of conductive wire 13. The number of turns of the third sub-coil 21 is equal to the number of strands of the conductive wire 13 provided in the second sub-coil 12, for example, the number of turns of the third sub-coil 21 in the figure is 24, and the second sub-coil 12 is provided with 24 strands of the conductive wire 13 in total.

Along the spiral winding direction, the head end and the tail end of each conductive wire 13 are respectively provided with a via hole 4, and the conductive wires 13 which are arranged in a one-to-one correspondence manner are connected in parallel through the via holes 4.

As shown in fig. 1 to 4, the wireless charging coil is provided with a junction region including a first junction region of the first main coil 1 and a second junction region of the second main coil 2, the front projections of the first junction region and the second junction region in the top view direction may coincide, and the front and rear ends of each turn of the conductive wire 13 are disposed opposite to each other at the junction region. The first leading-out end 10 is positioned at the outermost side of the first main coil 1 and is formed by extending a circle of first sub-coils 11 at the outermost side; the second lead-out end 20 is formed by extending the innermost charging wire (i.e. the fourth sub-coil 22 and the four conductive wires 13) of the second main coil 2, and the second lead-out end 20 extends to the outermost side of the second main coil 2 after penetrating through the second junction. The portion of the first lead-out end 10 extending out of the first main coil 1 and the portion of the second lead-out end 20 extending out of the second main coil 2 may be disposed one above the other.

In the scenario that the wireless charging coil performs wireless charging, the first lead-out terminal 10 and the second lead-out terminal 20 are respectively connected to the power, and the conductive wires 13 of the first main coil 1 and the second main coil 2 are connected to the power, so that the wireless charging is performed based on the charging principle of the wireless charging coil (common general knowledge in the art is not repeated herein).

In this embodiment, the first main coil 1 and the second main coil 2 are connected in parallel up and down, each main coil includes two sub-coils with different numbers of strands, and through the mixing of the coils with different numbers of strands (i.e. the corresponding two sub-coils), the wireless charging coil can realize the adjustment of the coil number within the limited size and thickness limit range, and realize the parameters such as the resistance and inductance of the wireless charging coil with different traditional fixed coil numbers within the same size and thickness range, thereby meeting different performance requirements.

Example 2

Referring to fig. 5 to 8, the strand hybrid wireless charging coil provided in the present embodiment includes a first main coil 5, a second main coil 6, and an insulating layer (not shown) disposed below the first main coil 5, wherein the insulating layer is disposed between the first main coil 5 and the second main coil 6 and is used for electrically insulating the first main coil 5 and the second main coil 6 as a whole.

The first main coil 5 includes a first sub-coil 51 of a first turn number m ₅ and a second sub-coil 52 of a second turn number m ₆, and as shown in fig. 5 and 6, the first main coil 5 is provided with 4 turns of the first sub-coil 51 and 5 turns of the second sub-coil 52, i.e., m ₅＝4,m₆ =5. The first sub-coil 51 and the second sub-coil 52 are each spirally wound in the counterclockwise direction by the conductive wire 53. Along the spiral winding direction of the first main coil 5, the first end of the first sub-coil 51 serves as a first lead-out end 50, the second end of the first sub-coil 51 is electrically connected to the first end of the second sub-coil 52, and in the scenario shown in fig. 6, the first end of the second sub-coil 52 (and four conductive wires 53 thereof) are marked with diagonal hatching to facilitate identification. The number of strands of the conductive wire 53 provided for each turn of the first sub-coil 51 and each turn of the second sub-coil 52 is different. For example, in the scenario shown in fig. 5 and 6, each turn of the first sub-coil 51 includes two conductive lines 53 and each turn of the second sub-coil 52 includes four conductive lines 53.

The second main coil 6 is electrically connected to the first main coil 5 through a via 7 penetrating the insulating layer. The second main coil 6 is further provided with a second outlet 60, one of the second outlet 60 and the first outlet 50 of the first main coil 5 being the input of the wireless charging coil, the other being the output thereof.

The winding direction of the first main coil 5 is opposite to the winding direction of the second main coil 6, and for example, in the case shown in fig. 5 to 8, the winding direction of the first main coil 5 is counterclockwise and the winding direction of the second main coil 6 is clockwise. The second main coil 6 includes a third sub-coil 61 of a third turn number m ₇ and a fourth sub-coil 62 of a fourth turn number m ₈, and as shown in fig. 7 and 8, the second main coil 6 is provided with 4 turns of the third sub-coil 61 and 5 turns of the fourth sub-coil 62, i.e., m ₇＝4,m₈ =5. The number of conductive wires 53 provided in each of the fourth sub-coil 62 and each of the second sub-coil 52 is the same, for example, four conductive wires 53 provided in the figure, and the number of conductive wires 53 provided in each of the third sub-coil 61 and each of the first sub-coil 51 is the same, for example, two conductive wires 53 provided in the figure.

As shown in fig. 6 and 8, the via hole 7 is located at the innermost turns of the first main coil 5 and the second main coil 6, and the second end of the second sub-coil 52 is electrically connected to the fourth sub-coil 62 of the second main coil 6 through the via hole 7, where the first main coil 5 and the second main coil 6 are connected in series.

As shown in fig. 5 to 8, the wireless charging coil is provided with a junction region including a first junction region of the first main coil 5 and a second junction region of the second main coil 6, the front projections of the first junction region and the second junction region in the top view direction may coincide, and the front and rear ends of each turn of the conductive wire 53 are disposed opposite to each other at the junction region. The first lead-out end 50 is located at the outermost side of the first main coil 5 and is formed by extending a circle of first sub-coils 51 at the outermost side; the second lead-out end 60 is the outermost side of the second main coil 6, and is formed by extending a third sub-coil 61 at the outermost side. The portion of the first lead-out end 50 extending beyond the first main coil 5 and the portion of the second lead-out end 60 extending beyond the second main coil 6 may be disposed one above the other.

In the case of wireless charging of the wireless charging coil, the first lead-out terminal 50 and the second lead-out terminal 60 are respectively connected to the power source, and the conductive wires 53 of the first main coil 5 and the second main coil 6 are connected to the power source, so as to perform wireless charging based on the charging principle of the wireless charging coil as known in the art.

In this embodiment, the first main coil 5 and the second main coil 6 are connected in series up and down, each main coil includes two sub-coils with different numbers of strands, and through the mixing of the coils with different numbers of strands (i.e. the corresponding two sub-coils), the wireless charging coil can realize the adjustment of the coil number within the limited size and thickness limit range, and realize the parameters such as the resistance and inductance of the wireless charging coil with different traditional fixed coil numbers within the same size and thickness range, thereby meeting different performance requirements.

It should be understood that, in other examples, the number of turns of each sub-coil in the first main coil 5 and the second main coil 6, and the number of strands of the conductive wire 53 may be correspondingly different, and further, the winding directions of the respective sub-coils are not necessarily opposite, for example, the winding directions may be the same, and in summary, the number of strands, the up-down positions, the winding directions, and the like of the respective sub-coils may be adaptively set according to the actual situation on the premise that the first main coil 5 and the second main coil 6 are connected in series.

The embodiment of the application also provides an electronic device, which comprises the strand number hybrid wireless charging coil according to any one of the above embodiments, so that the strand number hybrid wireless charging coil according to the corresponding embodiment has the beneficial effects, and the description is omitted herein.

The specific forms of the electronic device include, but are not limited to, smartphones, smartwatches, etc.

It should be understood that the stock number hybrid wireless charging coil and the electronic device provided in the embodiments of the present application are respectively complete devices, and also have structures corresponding to known devices, which are not described in detail herein.

The foregoing description is only a partial embodiment of the present application and is not intended to limit the scope of the present application, and all equivalent structural modifications made by those skilled in the art using the present description and accompanying drawings are included in the scope of the present application.

Although the terms first, second, etc. are used herein to describe various information, these information should not be limited by these terms. These terms are only used to distinguish one type of information from another. In addition, the singular forms "a", "an" and "the" are intended to include the plural forms as well. The terms "or" and/or "are to be construed as inclusive, or mean any one or any combination. An exception to this definition will occur only when a combination of elements, functions, steps or operations are in some way inherently mutually exclusive.

Claims

1. A hybrid wireless charging coil, comprising:

A first main coil comprises a first sub-coil with a first number of turns and a second sub-coil with a second number of turns, wherein along the winding direction of the first main coil, a first end of the first sub-coil serves as a first lead-out end, and a second end of the first sub-coil is electrically connected to a first end of the second sub-coil, and the number of strands of the conductive wire provided in each turn of the first sub-coil and each turn of the second sub-coil is different;

Insulation layer;

The second main coil, the insulating layer is arranged between the first main coil and the second main coil, the second main coil is electrically connected to the first main coil through a via hole penetrating the insulating layer, the second main coil is also provided with a second lead-out end, one of the second lead-out end and the first lead-out end serves as an input end of the hybrid wireless charging coil, and the other serves as an output end thereof.

2. The hybrid wireless charging coil according to claim 1, wherein the number of strands of the conductive wires provided in the second main coil and the first main coil is the same, and the strands are provided one by one in an upper and lower manner;

Along the winding direction, the via holes are respectively arranged at the head and tail ends of each strand of conductive wire, and the conductive wires arranged one by one above and below are connected in parallel through the via holes.

3. The hybrid wireless charging coil according to claim 2 is characterized in that the second main coil includes a third sub-coil with a third number of turns and a fourth sub-coil with a fourth number of turns, and the number of strands of the conductive wire set in each circle of the fourth sub-coil and each circle of the second sub-coil is the same; each circle of the third sub-coil only includes one strand of the conductive wire.

4. The hybrid wireless charging coil according to claim 3, characterized in that the number of turns of the third sub-coil is equal to the number of strands of the conductive wire provided in the second sub-coil.

5 . The hybrid wireless charging coil according to claim 1 , wherein the second end of the second sub-coil is connected in series with the second main coil through the via hole.

6 . The hybrid wireless charging coil according to claim 5 , wherein the via hole is located in the innermost circle of the first main coil and the second main coil.

7. The hybrid wireless charging coil according to claim 5 or 6 is characterized in that the second main coil comprises a third sub-coil with a third number of turns and a fourth sub-coil with a fourth number of turns, the number of strands of conductive wire set in each turn of the fourth sub-coil and each turn of the second sub-coil is the same, and the number of strands of conductive wire set in each turn of the third sub-coil and each turn of the first sub-coil is the same.

8. The hybrid wireless charging coil according to claim 5 or 6, characterized in that the winding direction of the first main coil is opposite to the winding direction of the second main coil.

9. The hybrid wireless charging coil according to claim 1, characterized in that the portion of the first lead-out end extending out of the first main coil and the portion of the second lead-out end extending out of the second main coil are arranged to overlap each other.

10. An electronic device, characterized in that the electronic device comprises the hybrid wireless charging coil as claimed in any one of claims 1 to 9.