Wireless charger

[0024] Example one

[0025] See figure 1 with figure 2 , figure 1 This is a schematic cross-sectional view of a wireless charger disclosed in an embodiment of this application. figure 2 This is a schematic diagram of the planed surface structure of a wireless charger disclosed in an embodiment of this application.

[0026] As shown in the figure, the wireless charger includes an upper cover 11, a charging coil 12, a ferrite 13, a printed circuit board assembly 14 and a lower cover 15. Wherein, the charging coil 12 is arranged above the ferrite 13, and the printed circuit board assembly 14 is a hollow structure, and the charging coil 12 and the ferrite 13 are placed in the through hole in the middle. Finally, the upper cover 11 and the lower cover 15 are added to form a wireless charger.

[0027] Since the printed circuit board assembly 14 is designed as a hollow structure, the charging coil 12 and the ferrite 13 can be placed inside the printed circuit board assembly 14, thus avoiding the charging coil 12, the ferrite 13 and the printed circuit board assembly in turn Stacking causes the problem of excessive thickness. The thickness of the wireless charger provided in this embodiment is only the thickness of the upper and lower covers plus the thickness of the printed circuit board assembly, omitting the thickness of the traditional charging coil and ferrite, and greatly reducing the thickness of the wireless charger The overall thickness makes it easier to carry.

[0028] Example two

[0029] Continue to see attached figure 1 And figure 2 , The ferrite 13 in the figure prevents the magnetic field generated by the charging coil 12 from affecting the printed circuit board assembly 14, but if the power is strong enough, a single ferrite 13 cannot completely shield the electromagnetic field. Therefore, we are A metal bracket 16 is further added between the ferrite 13 and the printed circuit board assembly 14. The metal bracket 16 further isolates the printed circuit board assembly 14 from the ferrite 13, and further ensures that the electromagnetic field of the charging coil 14 will not Affect the printed circuit board assembly 14.

[0030] Of course, the specific structure of the metal bracket 14 can be varied, as long as the above effects can be achieved. Here we give an example of a more preferred solution:

[0031] We set the metal bracket 16 to figure 2 In the structure shown, the metal bracket 16 has a groove shape as a whole, a part of which is arranged on the upper part of the printed circuit board assembly 14 and covers the printed circuit board assembly 14, and the groove part is connected to the printed circuit board assembly 14 To match the hollow structure, ferrite 13 is provided on the upper part of the groove. Therefore, the metal bracket 14 completely separates the ferrite 13 and the printed circuit board assembly 14. The electromagnetic field radiation of the charging coil 12 is effectively shielded.

[0032] In addition, we consider that the charging coil 12 has a terminal and a terminal, and the terminal and the terminal will increase the overall thickness of the wireless charger to a certain extent. For this reason, we choose to open a groove on the ferrite 13 that overlaps with the terminal and the outlet of the charging coil 12, and then place the terminal and the outlet respectively inside the groove, so as to further reduce The overall thickness of the entire wireless charger.

[0033] Further, in order to better fix the printed circuit board assembly 14 inside the wireless charger, we set a support beam 17 where the lower cover 15 overlaps the printed circuit board assembly 14, and the support beam 17 can support the printed circuit board Component 14.

[0034] In order to make the printed circuit board assembly 14 better fixed on the support beam 17, see image 3 , We evenly set four screw holes 141 on the printed circuit board assembly 14, and then fix the printed circuit board assembly 14 on the support beam 17 by bolts.

[0035] As for the combination of the upper cover 11 and the lower cover 15, it can be assembled in a variety of ways. Here we can choose to fix the upper cover 11 and the lower cover 5 together by the buckle 18, and assemble a complete wireless charger together with multiple internal components.

[0036] The drawings in the above embodiments are all explained by using the wireless charger as a circular pie-shaped structure. Of course, the application is not limited thereto. In addition, the overall structure of the wireless charger can also be arranged in other shapes, such as a cubic structure or a triangular structure. Correspondingly, the upper cover 11 is also set in a circle, square, triangle, etc. In order to make the printed circuit board assembly 14 better adapt to the shape of the upper and lower covers, we choose to set the printed circuit board assembly 14 in the same shape as the upper cover 11 and/or the lower cover 15. E.g image 3 As shown, the printed circuit board assembly 14 is circular, and the upper cover 11 and the lower cover 15 are also circular structures at this time. image 3 A USB connector 142 is also included in the USB connector 142, and the USB connector 142 can adopt a sunken plate structure to further reduce the thickness.