TWI844865B - Wireless charging device - Google Patents

Abstract

A wireless charging device includes a chassis, a circuit board, and at least one wireless charging module. The chassis includes a bottom plate and multiple assembly studs. The assembly studs are set on the bottom plate. The circuit board includes a base plate and at least one supporting part. The base plate is placed on the assembly studs. Each supporting part includes multiple supporting studs. The supporting studs are set on the base plate. The wireless charging module includes a frame and a charging coil. The frame has multiple first assembly parts. The first assembly parts are set on the assembly studs. The charging coil sets on the frame. The projection of the assembly studs and the supporting parts are at least partially overlaid.

Description

Wireless charging device

The present invention relates to a charging device, in particular a wireless charging device.

Nowadays, most smartphones are equipped with wireless charging functions. In line with this trend, the industry is also developing wireless charging devices vigorously. Wireless charging devices use the principle of electromagnetic induction to transmit electricity to the object to be charged, and in order to detect foreign objects, wireless charging devices are often equipped with wireless communication functions.

However, wireless charging devices are generally used in static indoor environments. In situations where users need to frequently shift their center of gravity (such as in a car), the wireless charging device may be unintentionally supported or supported by the user. Unintentional misoperation by the user may cause the circuit board in the wireless charging device to deform, resulting in damage to the wireless charging device.

The present invention provides a wireless charging device to avoid damage to the wireless charging device caused by bending of the circuit board.

The wireless charging device disclosed in one embodiment of the present invention includes a housing, a circuit board and at least one wireless charging module. The housing includes a bottom plate and a plurality of mounting posts, and the plurality of mounting posts protrude from the bottom plate. The circuit board includes a substrate and at least one supporting assembly, and the substrate is stacked on the mounting posts. Each supporting assembly includes a plurality of supporting posts, and the supporting posts protrude from the substrate. The wireless charging module includes a mounting bracket and a charging coil. The mounting bracket has a plurality of first assembly parts. The first assembly parts are respectively mounted on a plurality of supporting posts. The charging coil is arranged on the mounting bracket. The projections of the plurality of mounting posts and the plurality of supporting posts on the bottom plate at least partially overlap.

According to the wireless charging device of the above embodiment, because the support column of the support assembly and the mounting column of the housing are at least partially coaxial or the projection on the bottom plate at least partially overlaps, the force applied to the top plate will be transmitted to the bottom plate through the second assembly part, the mounting column and the support column, thereby reducing the force borne by the circuit board and avoiding damage to the wireless charging device caused by deformation of the circuit board.

The above description of the content of the present invention and the following description of the implementation method are used to demonstrate and explain the principle of the present invention, and provide a further explanation of the scope of the patent application of the present invention.

10: Mobile devices

100: Wireless charging device

101: First fastener

102: Second fastener

103: Airflow generator

200: Shell

210: Mounting column

220: Base plate

230: First side panel

231: Ventilation

240: Second side panel

241: Ventilation

250: Third side panel

260: Fourth side panel

270: Top plate

300: Circuit board

310: Substrate

320: Support assembly

321: Support column

400: Wireless charging module

410: Mounting bracket

411: First page

412: Second side

413: First assembly department

414: Second assembly department

420: Charging coil

430: Wireless communication antenna board

431:Through hole

Figure 1 is a three-dimensional schematic diagram of the wireless charging device according to the first embodiment of the present invention.

Figure 2 is a schematic diagram of the decomposition of Figure 1.

Figure 3 is a cross-sectional diagram of the wireless charging device in Figure 1 placed on a mobile device.

Please refer to Figures 1 to 3. Figure 1 is a three-dimensional schematic diagram of the wireless charging device according to the first embodiment of the present invention. Figure 2 is a schematic diagram of the exploded view of Figure 1. Figure 3 is a cross-sectional schematic diagram of the wireless charging device of Figure 1 with a mobile device placed thereon.

The wireless charging device 100 of this embodiment includes a housing 200, a circuit board 300 and two wireless charging modules 400. The wireless charging device 100 may also include a plurality of first fasteners 101, a plurality of second fasteners 102 and an airflow generator 103. The housing 200 includes a plurality of mounting posts 210, a bottom plate 220, a first side plate 230, a second side plate 240, a third side plate 250, a fourth side plate 260 and a top plate 270. The plurality of mounting posts 210 protrude from the bottom plate 220. The first side panel 230, the second side panel 240, the third side panel 250 and the fourth side panel 260 are respectively connected to the periphery of the bottom panel 220, and the first side panel 230 and the second side panel 240 are respectively located at two opposite sides of the bottom panel 220, and the third side panel 250 and the fourth side panel 260 are respectively located at two opposite sides of the bottom panel 220. The first side panel 230 and the second side panel 240 both have at least one vent 231, 241. The top panel 270 is connected to one side of the first side panel 230, the second side panel 240, the third side panel 250 and the fourth side panel 260 away from the bottom panel 220, and the top panel 270 is used to carry a mobile device 10. The mobile device 10 is, for example, a mobile phone or a tablet.

The circuit board 300 includes a substrate 310 and two supporting components 320. The substrate 310 is stacked on a plurality of mounting posts 210. Each supporting component 320 includes a plurality of supporting posts 321. The plurality of supporting posts 321 protrude from the substrate 310. At least a portion of the supporting posts 321 of the supporting component 320 is coaxially arranged with at least a portion of the mounting posts 210 of the housing 200, so that the structural strength of the wireless charging device 100 is improved through the coaxial arrangement of the supporting posts 321 and the mounting posts 210. In this way, the wireless charging device 100 can be prevented from being damaged due to deformation of the circuit board 300. The so-called coaxial arrangement of the supporting column 321 and the mounting column 210 means that the axis A of the supporting column 321 overlaps the axis A of the mounting column 210.

In this embodiment, at least part of the supporting column 321 and at least part of the mounting column 210 of the housing 200 are coaxially arranged, but the present invention is not limited thereto. In other embodiments, the supporting column and the mounting column may also be non-coaxially arranged, that is, the projections on the bottom plate may at least partially overlap. In other words, the supporting column and the mounting column may be, for example, eccentrically arranged. That is, the axis of the supporting column and the axis of the mounting column do not overlap.

The two wireless charging modules 400 each include a mounting bracket 410, a charging coil 420, and a wireless communication antenna plate 430. The mounting bracket 410 is, for example, an aluminum plate having a first surface 411, a second surface 412, a plurality of first assembly parts 413, and a plurality of second assembly parts 414. The first surface 411 faces the bottom plate 220 of the housing 200. The second surface 412 faces away from the first surface 411. The first assembly part 413 is, for example, a through hole, and penetrates the first surface 411 and the second surface 412. The second assembly part 414 is, for example, a stud, and protrudes from the second surface 412 of the mounting bracket 410. These first fasteners 101 pass through the first assembly portion 413 respectively and are used to be coupled to the support columns 321 of the two support assemblies 320 so that the mounting bracket 410 is fixed to the circuit board 300.

The charging coil 420 is stacked on the second surface 412 of the mounting bracket 410. The wireless communication antenna plate 430 has a plurality of through holes 431. The second fastener 102 is, for example, a screw, and passes through these through holes 431 and is coupled to the second assembly part 414, so that the wireless communication antenna plate 430 is fixed to these second assembly parts 414 of the mounting bracket 410. The charging coil 420 is between the mounting bracket 410 and the wireless communication antenna plate 430 and is separated from the wireless communication antenna plate 430 to reduce interference between the charging coil 420 and the wireless communication antenna plate 430.

The airflow generator 103 is, for example, a centrifugal fan disposed on the first surface 411 of the mounting bracket 410 to dissipate heat from the circuit board 300, but is not limited thereto. In other embodiments, the airflow generator can be changed to an axial flow fan and disposed on the circuit board.

According to the wireless charging device of the above embodiment, because the support column of the support assembly and the mounting column of the housing are at least partially coaxial or the projection on the bottom plate at least partially overlaps, the force applied to the top plate will be transmitted to the bottom plate through the second assembly part, the mounting column and the support column, thereby reducing the force borne by the circuit board and avoiding damage to the wireless charging device caused by deformation of the circuit board.

In one embodiment of the present invention, the wireless charging device of the present invention can be applied to a vehicle-mounted device, such as a self-driving car, an electric car, or a semi-autonomous car, etc.

Although the present invention is disclosed as above by the aforementioned embodiments, they are not used to limit the present invention. Anyone familiar with similar techniques can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of patent protection of the present invention shall be subject to the scope of the patent application attached to this specification.

10: Mobile device 100: Wireless charging device 101: First fastener 103: Airflow generator 200: Housing 210: Mounting column 220: Bottom plate 230: First side plate 231: Ventilation port 240: Second side plate 241: Ventilation port 270: Top plate 300: Circuit board 310: Substrate 321: Support column 400: Wireless charging module 410: Mounting bracket 411: First side 412: Second side 414: Second assembly unit 420: Charging coil 430: Wireless communication antenna plate A: Axis

Claims (10)

A wireless charging device comprises: a housing comprising a bottom plate and a plurality of mounting posts, the mounting posts protruding from the bottom plate; a circuit board comprising a substrate and at least one supporting assembly, the substrate being stacked on the mounting posts, the at least one supporting assembly comprising a plurality of supporting posts, the supporting posts protruding from the substrate; and at least one wireless charging module comprising: a mounting bracket having a plurality of first assembly parts, the first assembly parts being respectively mounted on the supporting posts; and a charging coil being arranged on the mounting bracket; wherein the projections of the mounting posts and the supporting posts on the bottom plate at least partially overlap. A wireless charging device as described in claim 1, wherein at least a portion of the mounting poles are coaxially arranged with at least a portion of the supporting poles. A wireless charging device as described in claim 1, wherein the mounting bracket further has a plurality of second assembly parts, and the at least one wireless charging module further includes a wireless communication antenna board, which is installed on the second assembly parts, and the charging coil is between the mounting bracket and the wireless communication antenna board. The wireless charging device as described in claim 3 further includes a plurality of first fasteners, the mounting bracket having a first surface and a second surface, the second surface facing away from the first surface, and the second assembly parts protruding from the second surface, the first assembly parts being through-holes and penetrating the first surface and the second surface, the first fasteners respectively passing through the first assembly parts and being used to be coupled to the circuit board. The wireless charging device as described in claim 4 further includes a plurality of second fasteners, wherein the second assembly parts are studs and protrude from the second surface of the mounting bracket, and the wireless communication antenna plate has a plurality of through holes, and the second fasteners pass through the through holes respectively and are respectively combined with the second assembly parts. The wireless charging device as described in claim 4 further includes an airflow generator, which is disposed on the first surface of the mounting bracket. A wireless charging device as described in claim 3, wherein the charging coil is separated from the wireless communication antenna plate. A wireless charging device as described in claim 1, wherein the number of the at least one wireless charging module and the at least one supporting assembly is two, and the first assembly parts of the two mounting brackets of the two wireless charging modules are respectively installed on the supporting columns of the two supporting assemblies. The wireless charging device as described in claim 1, wherein the outer shell further includes a first side panel and a second side panel, the first side panel and the second side panel are respectively connected to two opposite sides of the bottom panel, and the first side panel and the second side panel both have at least one vent. A wireless charging device as described in claim 9, wherein the housing further includes a top plate, two opposite sides of the top plate are respectively connected to the first side plate and a side of the second side plate away from the bottom plate, and the top plate is used to carry a mobile device.