Wireless charging device

Abstract

The utility model provides a wireless charging device. The wireless charging device comprises a shell, a ferrite accommodated in the shell, a first charging coil arranged on the upper side of the ferrite, a second charging coil arranged on the lower side of the ferrite, and a circuit board arranged in the shell and connected with the first charging coil and the second charging coil. The first charging coil and the second charging coil are arranged on the upper side and the lower side of the ferrite respectively, manufacturing cost can be effectively saved, and assembling is simplified.

Description

[Technical Field]

[0001] This utility model relates to a wireless charging device, and more particularly to a wireless charging device capable of charging from both sides. [Background Technology]

[0002] Wireless charging devices typically include single-sided and double-sided wireless charging devices. A single-sided wireless charging device charges one mobile device, while a double-sided wireless charging device can charge two mobile devices simultaneously. In the prior art, a single-sided wireless charging device includes at least a first charging coil, a ferrite core cooperating with the charging coil, and a circuit board connecting the charging coil, while a double-sided charging device includes at least two charging coils, two ferrite cores corresponding to the two charging coils respectively, and a circuit board. However, the multiple ferrite cores in a double-sided wireless charging device not only increase the thickness of the wireless charging device but also increase manufacturing costs and assembly processes.

[0003] Therefore, it is indeed necessary to improve existing wireless charging devices to overcome the aforementioned shortcomings. [Utility Model Content]

[0004] The purpose of this invention is to provide a wireless charging device that is easy to manufacture and assemble and can be charged on both sides.

[0005] The purpose of this utility model is achieved through the following technical solution: a wireless charging device, including a housing, a ferrite housed in the housing, a first charging coil disposed on the upper side of the ferrite, a second charging coil disposed on the lower side of the ferrite, and a circuit board disposed in the housing and connected to the first charging coil and the second charging coil.

[0006] Furthermore, the first charging coil is disposed close to the central region of the ferrite, and the second charging coil is disposed away from the central region of the ferrite, such that the first charging coil and the second charging coil are offset in the radial direction. The first charging coil faces the upper cover of the housing for charging the first mobile device, and the second charging coil faces the lower cover of the housing for charging the second mobile device. The circuit board is disposed on the upper side of the ferrite and outside the first charging coil.

[0007] Furthermore, the upper side of the ferrite is provided with an annular groove for accommodating the first charging coil, and the circuit board is an annular structure arranged around the outside of the annular groove.

[0008] Furthermore, the ferrite has a first annular rib on its upper side and a second annular rib with an inclined surface that is lower on the inside and higher on the outside located outside the first annular rib. The annular groove is defined by the first annular rib and the inclined surface, and the circuit board is arranged around the outside of the second annular rib.

[0009] Furthermore, the ferrite is provided with a receiving hole located inside the annular groove for receiving a first magnet, the first magnet being used to attract a first mobile device placed on the upper cover, and a magnetic shielding sheet being provided between the first magnet and the lower cover.

[0010] Furthermore, the two ends of the first charging coil are connected to the upper side of the circuit board, the ferrite has a slot, and the two ends of the second charging coil pass through the slot and are connected to the upper side of the circuit board.

[0011] Furthermore, the wireless charging device is provided with a second magnet located on the outside of the ferrite, the second magnet being used to attract a second mobile device placed on the lower cover.

[0012] Furthermore, the wireless charging device also includes a counterweight ring mounted on the ferrite from top to bottom. The counterweight ring includes an annular base located on the upper side of the ferrite and surrounding the outside of the circuit board, and an annular side portion extending downward from the periphery of the annular base and located outside the ferrite. The second magnet is composed of several magnets and is surrounding the outside of the annular side portion.

[0013] Furthermore, the wireless charging device also includes a cable or connector connected to the circuit board to enable power input, and the counterweight ring and the second magnet are provided with clearance notches to allow the cable or connector to pass.

[0014] Furthermore, the housing includes an integral first part having the upper cover and annular wall, and a second part consisting of the lower cover fixed to the lower end of the annular wall, the lower cover having a silicone material surface.

[0015] Compared with the prior art, the present invention has the following advantages: the wireless charging device only has one ferrite, and the first charging coil and the second charging coil are respectively set on the upper and lower sides of the ferrite, which can effectively save manufacturing costs and simplify assembly, while also being conducive to the development trend of thinner wireless charging devices. [Attached Image Description]

[0016] Figure 1 This is a perspective view of the wireless charging device of this utility model.

[0017] Figure 2 yes Figure 1 A stereoscopic view from another perspective.

[0018] Figure 3 This is an exploded perspective view of the wireless charging device of this utility model.

[0019] Figure 4 yes Figure 3A three-dimensional exploded view from another perspective.

[0020] Figure 5 This is a partial exploded perspective view of the wireless charging device of this utility model.

[0021] Figure 6 yes Figure 5 A three-dimensional exploded view from another perspective.

[0022] Figure 7 This is a partial perspective view of the wireless charging device of this utility model.

[0023] Figure 8 yes Figure 7 A three-dimensional exploded view.

[0024] Figure 9 yes Figure 8 A three-dimensional exploded view from another perspective.

[0025] Figure 10 yes Figure 7 A cross-sectional view.

[0026] Figure 11 This is a partial perspective view of another embodiment of the wireless charging device of this utility model.

[0027] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model.

Detailed Implementation Methods

[0028] Please refer to Figures 1 to 11 As shown, the wireless charging device 100 of this utility model is a magnetic charger that can be charged on both sides. The wireless charging device 100 includes a housing 1, a ferrite 2 housed in the housing 1, a first charging coil 3 disposed on the upper side of the ferrite 2 for charging a first mobile device (not shown), a second charging coil 4 disposed on the lower side of the ferrite 2 for charging a second mobile device (not shown), a circuit board 5 disposed in the housing 1 connecting the first charging coil 3 and the second charging coil 4, a first magnet 6 disposed in the housing 1 for attracting the first mobile device (not shown) during charging, and a second magnet 7 disposed in the housing 1 for attracting the second mobile device (not shown) during charging.

[0029] The housing 1 includes an upper cover 11, a lower cover 12, and an annular wall 13 located between the upper cover 11 and the lower cover 12. The upper cover 11 and the annular wall 13 are integrally designed to form the first part of the housing 1, and the lower cover 12 is fixed to the lower end of the annular wall 13 to form the second part of the housing 1. The first charging coil 3 is disposed near the central region of the ferrite 2 and faces the upper cover 11 of the housing 1. The second charging coil 4 is disposed away from the central region of the ferrite 2 and faces the lower cover 12, so that the first charging coil 3 and the second charging coil 4 are staggered in the radial direction, so that the first charging coil 3 and the second charging coil 4 do not interfere with each other when charging the first mobile device (not shown) and the second mobile device (not shown).

[0030] The circuit board 5 is disposed on the upper side of the ferrite 2 and outside the first charging coil 3. The upper side of the ferrite 2 has an annular groove 20 for receiving the first charging coil 3, and the circuit board 5 is an annular structure surrounding the annular groove 20. Specifically, the upper side of the ferrite 2 has a first annular rib 21 and a second annular rib 22 located outside the first annular rib 21 with an inclined surface 220 having a lower inner surface and a higher outer surface. The annular groove 20 is defined by the first annular rib 21 and the inclined surface 220, and the circuit board 5 is surrounding the second annular rib 22. The ferrite 2 has a receiving hole 23 located inside the annular groove 20 for receiving the first magnet 6. The first magnet is used to attract a first mobile device (not shown) placed on the upper cover 11. The first mobile device (not shown) is a smartwatch. Preferably, the upper cover 11 has a recess 110 to fit the contour of the smartwatch. A magnetic shielding sheet 8 is provided between the first magnet 6 and the lower cover 12. The magnetic shielding sheet 8 is used to prevent the first magnet 6 from attracting a second mobile device (not shown), which is a mobile phone. The second magnet 7 is fixed to the annular wall 13 or the lower cover 12 to attract the second mobile device (not shown) placed on the lower cover 12. In this invention, the second magnet 7 is a plurality of magnetic units 70 disposed on the outside of the ferrite 2. These magnetic units 70 are connected in a ring shape by adhesive or other means. The lower cover 12 preferably has a surface made of silicone material.

[0031] The wireless charging device 100 further includes a counterweight ring 9 housed within the housing 1 to enhance the feel of use. The counterweight ring 9 is mounted on the ferrite 2 from top to bottom. The counterweight ring 9 includes an annular base 91 located on the upper side of the ferrite 2 and surrounding the outer side of the circuit board 5, and an annular side portion 92 extending downward from the periphery of the annular base 91 and located outside the ferrite 2. The second magnet 7 is surrounded on the outer side of the annular side portion 92.

[0032] In this invention, the two ends 3a and 3b of the first charging coil 3 are connected to the upper side of the circuit board 5, and the two ends 4a and 4b of the second charging coil 4 are also connected to the upper side of the circuit board 5. This allows the first charging coil 3 and the second charging coil 4 to be soldered together on the same side of the circuit board 5. To facilitate the soldering of the two ends 4a and 4b of the second charging coil 4 to the upper side of the circuit board 5 located above the ferrite 2, the ferrite 2 is provided with a slot 24 for the two ends 4a and 4b of the second charging coil to pass upwards. The two ends 4a and 4b of the second charging coil 4 pass through the slot 24 and are bent at the inner and outer sides of the circuit board 5 respectively to connect to the upper side of the circuit board 5. Furthermore, the second annular rib 22 has a channel 221 for the first charging coil 3 to extend and connect to the circuit board 5. Figures 3 to 6 As shown, the wireless charging device 100 is provided with a connector 300 connected to the circuit board 5 to realize power input. The connector 300 is powered by connecting to a cable assembly 400 having an adapter connector 401. (See reference...) Figure 11 As shown, in other embodiments, the wireless charging device includes a cable 500 directly connected to the circuit board 5 to achieve power input. In this invention, the counterweight ring 9 and the second magnet 7 are provided with clearance notches 93 and 71 to accommodate the connector 300 or the cable 500.

[0033] In this invention, the first charging coil 3 and the second charging coil 4 of the wireless charging device 100 share a single ferrite core 2, which effectively saves manufacturing costs, simplifies assembly, and promotes the trend towards thinner wireless charging devices. This also facilitates heat dissipation. Furthermore, the first charging coil 3 and the second charging coil 4 can make reasonable use of the upper and lower spaces of the ferrite core 2, ensuring that the two coils do not interfere with each other during charging. Moreover, the first charging coil 3 and the second charging coil 4 are connected to the same side of the circuit board 5, facilitating soldering operations.

[0034] The above description is only a partial embodiment of the present utility model, not all of the embodiments. Any equivalent changes to the technical solution of the present utility model made by those skilled in the art after reading the present utility model specification shall be covered by the claims of the present utility model.

Claims

1. A wireless charging device comprising a housing, characterized in that: The wireless charging device further includes a ferrite housed within the housing, a first charging coil disposed on the upper side of the ferrite, a second charging coil disposed on the lower side of the ferrite, and a circuit board disposed within the housing and connected to the first charging coil and the second charging coil. The first charging coil is disposed close to the central region of the ferrite, and the second charging coil is disposed away from the central region of the ferrite, such that the first charging coil and the second charging coil are offset in the radial direction. The circuit board is disposed on the upper side of the ferrite and outside the first charging coil. The upper side of the ferrite is provided with an annular groove for housing the first charging coil, and the circuit board is an annular structure surrounding the annular groove.

2. The wireless charging device of claim 1, wherein: The first charging coil faces the upper cover of the housing to charge the first mobile device, and the second charging coil faces the lower cover of the housing to charge the second mobile device.

3. The wireless charging device of claim 2, wherein: The ferrite has a first annular rib on its upper side and a second annular rib with an inclined surface that is lower on the inside and higher on the outside of the first annular rib. The annular groove is defined by the first annular rib and the inclined surface. The circuit board is arranged around the outside of the second annular rib.

4. The wireless charging device of claim 2, wherein: The ferrite is provided with a receiving hole located inside the annular groove for receiving a first magnet. The first magnet is used to attract a first mobile device placed on the upper cover. A magnetic shielding sheet is provided between the first magnet and the lower cover.

5. The wireless charging device of claim 2, wherein: The first charging coil has its two ends connected to the upper side of the circuit board, and the ferrite has a slot. The second charging coil has its two ends passing through the slot and connected to the upper side of the circuit board.

6. The wireless charging device of claim 2, wherein: The wireless charging device is provided with a second magnet located on the outside of the ferrite, which is used to attract a second mobile device placed on the lower cover.

7. The wireless charging device of claim 6, wherein: The wireless charging device further includes a counterweight ring mounted on the ferrite from top to bottom. The counterweight ring includes an annular base located on the upper side of the ferrite and surrounding the outside of the circuit board, and an annular side portion extending downward from the periphery of the annular base and located outside the ferrite. The second magnet is composed of several magnets and is surrounding the outside of the annular side portion.

8. The wireless charging device of claim 7, wherein: The wireless charging device also includes a cable or connector connected to the circuit board to enable power input, and the counterweight ring and the second magnet are provided with clearance notches to allow the cable or connector to pass.

9. The wireless charging device of claim 2, wherein: The housing includes an integral first part having the upper cover and an annular wall, and a second part consisting of the lower cover fixed to the lower end of the annular wall, the lower cover having a silicone surface.

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