Wireless charging panel and wireless charger

Abstract

The utility model discloses a wireless charging panel and a wireless charger, which comprise a PCB (printed circuit board) body, a charging coil part is printed on the PCB body, the charging coil part spirally extends from inside to outside, a fold line part inclined inwards is formed at the junction of two adjacent circles of windings in the charging coil part, and the fold line part is provided with a plurality of coils. Two welding spots and a charging circuit are arranged on one side, opposite to the charging coil part, of the PCB body, the welding spots are used for being connected with wires, and the charging circuit is connected between the welding spots and the charging coil part. Compared with a traditional product in which the coil and the PCB are stacked, the wireless charger provided by the utility model can greatly reduce the overall thickness of the wireless charger, and enables the wireless charger to be more ultrathin, thereby meeting the requirements of users and markets.

Description

Technical Field

[0001] The utility model relates to a wireless charger, in particular to a wireless charging plate and a wireless charger. Background Art

[0002] A wireless charger is a device used to wirelessly charge smart devices such as mobile phones. Its main structure includes a PCB board, wires, and a wireless charging coil module. At present, in order to facilitate carrying and use, many wireless chargers are designed to be ultra-thin. For related structures, please refer to the Chinese patent publication number CN205583792U, entitled "An Ultra-Thin Wireless Charger", which records:

[0003] "An ultra-thin wireless charger includes a body shell, a charging coil, a circuit board and a power interface, wherein the charging coil is placed in the body shell, and the circuit board is arranged in the power interface and connected to the charging coil through a charging cable. The utility model arranges the charging coil and the circuit board separately, so that the charging coil is placed alone in the body shell. On the one hand, the charging seat can be made very thin, and it is also conducive to the heat dissipation of the charging coil";

[0004] In order to achieve an ultra-thin structure, existing wireless chargers generally improve the shell part. By designing a reasonable shell structure, the overall product tends to be more ultra-thin. However, the internal circuit board and coil are still a stacked structure, and the improvement space for ultra-thinness is limited, and it cannot even meet the ideal ultra-thin requirements. Utility Model Content

[0005] The technical problem to be solved by the utility model is that, in view of the deficiencies in the prior art, a wireless charging board and a wireless charger are provided which integrate a coil and a PCB board into one, have ultra-thin characteristics, and help the coil to cover the entire board surface.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions.

[0007] A wireless charging board, comprising a PCB body, a charging coil portion printed on the PCB body, the charging coil portion extending in a spiral shape from the inside to the outside, an inwardly inclined fold line portion formed at the junction of two adjacent windings in the charging coil portion, two soldering points and a charging circuit are provided on a side of the PCB body facing away from the charging coil portion, the soldering points are used to connect wires, and the charging circuit is connected between the soldering points and the charging coil portion.

[0008] Preferably, the PCB board body is a circular board body.

[0009] Preferably, a through hole is provided at the center of the PCB body.

[0010] Preferably, the solder joints and the charging circuit are distributed around the through hole.

[0011] Preferably, the width of each winding in the charging coil portion is denoted as a, and the distance between two adjacent windings in the charging coil portion is denoted as b, then a:b=11:3.

[0012] A wireless charger comprises a shell, wherein the above-mentioned wireless charging plate is arranged inside the shell.

[0013] In the wireless charging board disclosed by the utility model, the PCB board body serves as the main structure, on which the charging coil part and the routing of the charging circuit are printed, the charging coil part has multiple windings, the multiple windings are spirally coiled, and an inwardly inclined fold line part is formed at the junction of two adjacent windings. The utility model can make each winding circle closer to a complete circle by setting the fold line part, and it is not necessary to design it as a shape with a gradual arc change, so the outermost winding circle can extend along the edge of the PCB board body, so that the charging coil part fully covers the board surface of the PCB board body, so that the electromagnetic energy of the entire charging area is evenly distributed, thereby ensuring efficient conduction of electromagnetic energy. At the same time, the utility model prints the charging coil part on the PCB board body in the form of a printed circuit board. Compared with the traditional product method of stacking the coil and the PCB board, the utility model can greatly reduce the overall thickness of the wireless charger, making the wireless charger more ultra-thin, thereby meeting user and market needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The three-dimensional wireless charging plate of the utility model Figure 1 ;

[0015] Figure 2 The three-dimensional wireless charging plate of the utility model Figure 2 . DETAILED DESCRIPTION

[0016] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments.

[0017] The utility model discloses a wireless charging plate, combined with Figure 1 and Figure 2 As shown, it includes a PCB body 1, on which a charging coil portion 2 is printed, the charging coil portion 2 extends in a spiral shape from the inside to the outside, and an inwardly inclined fold line portion 20 is formed at the junction of two adjacent windings in the charging coil portion 2. Two solder joints 3 and a charging circuit 4 are provided on the side of the PCB body 1 facing away from the charging coil portion 2. The solder joints 3 are used to connect wires, and the charging circuit 4 is connected between the solder joints 3 and the charging coil portion 2.

[0018] In the above structure, the PCB board 1 is used as the main structure, on which the routing of the charging coil part 2 and the charging circuit 4 are printed. The charging coil part 2 has a multi-turn winding, which is spirally wound, and an inwardly inclined fold line part 20 is formed at the junction of two adjacent windings. Figure 2 The utility model can make each winding circle closer to a complete circle by setting the fold line portion 20, and does not need to be designed as a shape with a gradual arc change, so the outermost winding circle can extend along the edge of the PCB board body 1, so that the charging coil portion 2 fully covers the board surface of the PCB board body 1, so that the electromagnetic energy of the entire charging area is evenly distributed, thereby ensuring efficient conduction of electromagnetic energy. At the same time, the utility model prints the charging coil portion 2 on the PCB board body 1 in the form of a printed circuit board. Compared with the traditional product method of stacking the coil and the PCB board, the utility model can greatly reduce the overall thickness of the wireless charger, making the wireless charger more ultra-thin, thereby meeting user and market needs.

[0019] In order to better match the shape of the circular wireless charger, in this embodiment, the PCB body 1 is a circular body. In practical applications, the overall shape of the wireless charger is also circular, so that it is convenient to carry and use.

[0020] As a preferred embodiment, a through hole 10 is provided at the center of the PCB body 1. By providing the through hole 10, this embodiment can facilitate the engagement and fixation with the upper and lower shells of the wireless charger, and can be specifically fixed in a screw-free manner.

[0021] In this embodiment, in order to make full use of the board space, please refer to Figure 1 , the solder joints 3 and the charging circuit 4 are distributed around the through hole 10 .

[0022] Furthermore, the width of each winding in the charging coil part 2 is recorded as a, and the spacing between two adjacent windings in the charging coil part 2 is recorded as b, then a:b = 11:3. After testing, this ratio of line width and spacing can make the charging coil part 2 have a higher electromagnetic energy radiation efficiency.

[0023] On this basis, this embodiment also relates to a wireless charger, Figure 1 and Figure 2 As shown, it includes a housing, and the wireless charging board described above is arranged in the housing. In practical applications, the PCB board body 1 is fixed in the housing in a screw-free manner.

[0024] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions or improvements made within the technical scope of the present invention should be included in the scope of protection of the present invention.

Claims

1. A wireless charging pad, characterized in that: The invention comprises a PCB body (1), on which a charging coil part (2) is printed, the charging coil part (2) extending from the inside to the outside in a spiral shape, a fold line part (20) inclined inwardly is formed at the junction of two adjacent windings in the charging coil part (2), two soldering points (3) and a charging circuit (4) are provided on the side of the PCB body (1) facing away from the charging coil part (2), the soldering points (3) are used to connect wires, and the charging circuit (4) is connected between the soldering points (3) and the charging coil part (2).

2. The wireless charging pad according to claim 1, wherein: The PCB body (1) is a circular body.

3. The wireless charging pad according to claim 1, wherein: A through hole (10) is provided at the center of the PCB body (1).

4. The wireless charging pad as claimed in claim 3, characterized in that: The soldering points (3) and the charging circuit (4) are distributed around the through hole (10).

5. The wireless charging pad according to claim 1, wherein: The width of each winding in the charging coil part (2) is recorded as a, and the distance between two adjacent windings in the charging coil part (2) is recorded as b, so a:b=11:

3.

6. A wireless charger, characterized in that: It comprises a shell, in which the wireless charging plate according to any one of claims 1 to 5 is arranged.

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