TWM655885U - Antenna device and wireless charging device thereof - Google Patents

Abstract

An antenna device and a wireless charging device thereof are provided. The antenna device includes a flexible printed circuit board (FPC), a coil module, at least one induction metal plate, a coil connection end and an induction connection end. The coil module is configured on the FPC. The coil module includes an induction coil with a plurality of loop-shaped coils. The induction metal plate is arranged on the FPC. The areas where the induction metal plate and the coil module are arranged on the FPC do not overlap with each other. The coil connection end is electrically connected to the coil module. The induction connection end is electrically connected to the induction metal plate.

Description

Antenna device and wireless charging device using the same

This novel invention relates to a wireless charging field, and in particular to an antenna device and a wireless charging device using the antenna device.

In order to make consumer electronic devices more convenient to use, these consumer electronic devices and corresponding peripheral equipment (such as wireless mice, wireless keyboards, styluses, etc.) are designed to perform device pairing, signal transmission, and charging wirelessly. As for wireless charging technology, the coil module that can be used for wireless charging still needs to have a sufficient area and be configured in a ring shape using physical copper wires. Electronic devices with wireless charging functions are difficult to design to be thin and light.

This novel invention provides an antenna device and a wireless charging device using the same, so that the antenna device can be installed on a flexible printed circuit board (FPC) to adjust its layout area, and the antenna device has additional control functions.

The coil module required for the wireless charging function is configured on a flexible printed circuit board (FPC) using copper wire, and one or more additional sensing metal plates are added for the control operation of the wireless charging device or other functions.

The antenna device of the novel invention includes a flexible printed circuit board, a coil module, at least one inductive metal plate, a coil connection end and an inductive connection end. The coil module is arranged on the flexible printed circuit board. The coil module includes an inductive coil presenting a plurality of annular coils. At least one inductive metal plate is arranged on the flexible printed circuit board. The area where the at least one inductive metal plate and the coil module are arranged on the flexible printed circuit board do not overlap each other. The coil connection end is electrically connected to the coil module. The inductive connection end is electrically connected to the at least one inductive metal plate.

The wireless charging device of the novel invention includes a flexible printed circuit board, a coil module, at least one inductive metal plate, an inductive controller, a microprocessor and a wireless charging controller. The coil module is arranged on the flexible printed circuit board. The coil module includes an inductive coil presenting a plurality of annular coils. At least one inductive metal plate is arranged on the flexible printed circuit board. The area where the at least one inductive metal plate and the coil module are arranged on the flexible printed circuit board do not overlap each other. The inductive controller is electrically connected to the at least one inductive metal plate. The microprocessor is electrically connected to the inductive controller. The wireless charging controller is electrically connected to the coil module and the microprocessor.

Based on the above, the antenna device and the wireless charging device using the same described in the present invention configure the coil module required for the wireless charging function on the flexible printed circuit board (FPC) using copper wire, so that the antenna device can be set on the flexible printed circuit board (FPC) and its layout area can be adjusted. In addition, the present invention additionally adds one or more inductive metal plates to the antenna device to control the wireless charging device or other functions through the inductive metal plates, thereby giving the antenna device and the wireless charging device additional control uses.

100: Wireless charging device

110: Antenna device

115: Flexible printed circuit board

120: Inductive metal plate

125: Sensor connection terminal

130: Induction controller

140: Microprocessor

150: Wireless charging controller

160: Coil module

165: Coil connection terminal

171,172: First magnetic element

305: Device to be charged

306: Wireless charging module

307:Battery

308: Pen body

320:arrow

370: Positioning mechanism

371,732: Second magnetic element

TE1: The first end of the induction coil

TE2: The second end of the induction coil

RD:reserved distance

CE1: The first connection end of the coil connection end

CE2: Second connection end of the coil connection end

Figure 1 is a schematic diagram of a wireless charging device according to an embodiment of the present invention.

Figure 2 is a schematic diagram of an antenna device according to an embodiment of the present invention.

Figure 3 is a schematic diagram of a wireless charging device and a device to be charged according to another embodiment of the present invention.

FIG1 is a schematic diagram of a wireless charging device 100 according to an embodiment of the present invention. The wireless charging device 100 can be installed in a consumer electronic device, such as a laptop computer, a tablet computer, a smart phone, etc.

The wireless charging device 100 includes an antenna device 110, a sensing controller 130, a microprocessor 140 and a wireless charging controller 150. The antenna device 110 includes a flexible printed circuit board (FPC) 115, a coil module 160, at least one sensing metal plate (one sensing metal plate 120 in FIG. 1 ), a coil connection terminal 165 and a sensing connection terminal 125.

The coil module 160 is disposed on the flexible printed circuit board 115. The coil module 160 of the present embodiment includes a single sensing coil presenting a plurality of annular coils. The user of the present embodiment may also use a plurality of sensing coils to implement the coil module 160, each sensing coil presenting the appearance of a plurality of annular coils (as shown in FIG. 1 ). The sensing coil has two ends, and the two ends are electrically connected to the wireless charging controller 150 through the coil connection end 165. In other words, the coil connection end 165 is electrically connected to the coil module 160. This embodiment designs the physical copper wire as an inductive coil and arranges it on the flexible printed circuit board 115, so that the antenna device can adjust its layout area and still have a wireless charging function when it is appropriately bent according to the flexible printed circuit board 115.

The wireless charging device may have one or more sensing metal plates, and FIG. 1 takes a sensing metal plate 120 as an example. The sensing metal plate 120 is disposed on the flexible printed circuit board 115. The sensing metal plate 120 and the coil module 160 are disposed on the flexible printed circuit board 115 in areas that do not overlap each other. In a related embodiment consistent with the present invention, the sensing metal plate 120 and the coil module 160 are disposed on the flexible printed circuit board 115 at a predetermined distance, such as 0.2 mm. This predetermined distance is calculated by hardware design in this embodiment based on the emission intensity of the coil module 160, the wiring result on the flexible printed circuit board 115, and the area of the sensing metal plate 120 as parameters to avoid mutual interference between the sensing metal plate 120 and the coil module 160.

The sensing connection terminal 125 is electrically connected to the sensing metal plate 120. The sensing metal plate 120 is electrically connected to the sensing controller 130 through the sensing connection terminal 125. The sensing controller 130 is electrically connected to the sensing metal plate 120 through the sensing connection terminal 125. The user can touch the sensing metal plate 120 with a finger to change the corresponding capacitance value of the sensing metal plate 120, so that the sensing controller 130 can determine whether there is a finger touch, and then generate a corresponding sensing signal to perform related control operations.

The microprocessor 140 is electrically connected to the inductive controller 130. The wireless charging controller 150 is electrically connected to the microprocessor 140, and the wireless charging controller 150 is electrically connected to the coil module 160 through the coil connection terminal 165. The microprocessor 140 determines whether the capacitance value of the sensing metal plate 120 changes through the inductive controller 130, and further determines whether a finger or other object touches the sensing metal plate 120. The microprocessor 140 converts the aforementioned capacitance value change into a control signal for the wireless charging controller 150, thereby performing control operations for the wireless charging device 100 or other functions.

For example, when the sensing controller 130 determines that a finger touches the sensing metal plate 120 once, the microprocessor 140 can control the wireless charging controller 150 to turn on the wireless charging device 100 and prepare to wirelessly charge a device to be charged. When the sensing controller 130 determines that a finger touches the sensing metal plate 120 for a long time (e.g., 5 seconds or 10 seconds), the microprocessor 140 can control the wireless charging controller 150 to restart the wireless charging device 100 to reset the wireless charging device 100, etc. The user of this embodiment can program the corresponding operation of the finger touch according to the needs, so that the sensing metal plate 120 cooperates with the sensing controller 130, the microprocessor 140 and the wireless charging controller 150 to have the control function related to the wireless charging device 100. On the other hand, the user of this embodiment can also use other objects (for example, the body of the touch pen of the device to be charged) to touch the sensing metal plate 120 and perform the above-mentioned corresponding operation.

FIG2 is a schematic diagram of an antenna device 110 according to an embodiment of the present invention. The antenna device 110 can be produced or manufactured independently of other components (such as the inductive controller 130, the microprocessor 140 and the wireless charging controller 150) in the wireless charging device 100 in FIG1. Referring to FIG2, the inductive metal plate 120 in the antenna device 110 is electrically connected to the inductive connection terminal 125, and the two ends of the inductive coil in the coil module 160 are electrically connected to the coil connection terminal 165.

The sensing connection end 125 and the coil connection end 165 can be electrically connected to other components in the wireless charging device 100 of FIG. 1. The sensing metal plate 120 and the coil module 160 are configured on the flexible printed circuit board 115 at a predetermined distance RD. The coil connection end 165 includes a first connection end CE1 and a second connection end CE2. The first connection end CE1 is electrically connected to the first end TE1 of the sensing coil. The second connection end CE2 is electrically connected to the second end TE2 of the sensing coil.

FIG3 is a schematic diagram of a wireless charging device 300 and a device to be charged 305 according to another embodiment of the present invention. Most of the components of the wireless charging device 300 in FIG3 are the same as those of the wireless charging device 100 in FIG1. The difference between the two is that the wireless charging device 300 in FIG3 has multiple sensing metal plates 120, and the wireless charging device 300 in FIG3 additionally includes a first magnetic object (e.g., two first magnetic objects 171 and 172 in FIG3. The multiple sensing metal plates 120 in FIG3 are all electrically connected to the sensing controller 130 through the sensing connection terminal 125, and can realize the corresponding functions of the sensing connection terminal 125 and the sensing controller 130 in FIG1. The device to be charged 305 in this embodiment can be a touch pen.

The first magnetic objects 171 and 172 are disposed on the outer shell of the wireless charging device 300. The first magnetic objects 171 and 172 fix the position of the device to be charged 305 by magnetic force. In other words, the device to be charged 305 includes second magnetic objects 371 and 372. The first magnetic objects 171 and 172 and the second magnetic objects 371 and 372 can be collectively referred to as a positioning mechanism 370. When the device to be charged 305 approaches the first magnetic objects 171 and 172, the position of the device to be charged 305 is temporarily fixed by the magnetic force between the first magnetic objects 171 and 172 and the second magnetic objects 371 and 372, so that the coil module 160 in the wireless charging device 300 can conveniently perform wireless charging on the device to be charged 305 (as shown by arrow 320 in Figure 3). The user of this embodiment can adjust the number of the first magnetic objects according to their needs. For example, the user of this embodiment can use only a single first magnetic object and a single second magnetic object to match the groove on the outer shell and the appearance of the device to be charged 305 to perform physical latch fixation combined with magnetic fixation.

The device to be charged 305 may also include a wireless charging module 306 and a battery 307. The wireless charging module 306 obtains electrical energy through the mutual magnetic field change with the wireless charging controller 150 and the coil module 160 in the wireless charging device 300, and organizes it into a current that can be used by the battery 307, thereby storing the electrical energy in the battery 307.

The device to be charged 305 may also include a pen body 308. The user can change the capacitance value corresponding to the sensing metal plate 120 by touching the pen body 308 of the device to be charged 305 to the sensing metal plate 120 in FIG. 3, so that the sensing controller 130 can determine whether the pen body 308 of the device to be charged 305 is touched, and then generate a corresponding sensing signal to perform related control operations.

In summary, the antenna device and wireless charging device described in the present invention configure the coil module required for the wireless charging function on a flexible printed circuit board (FPC) using copper wire, so that the antenna device can be set on the flexible printed circuit board (FPC) and its layout area can be adjusted. In addition, the present invention additionally adds one or more inductive metal plates to the antenna device to control the wireless charging device or other functions through the inductive metal plates, thereby giving the antenna device and the wireless charging device additional control purposes.

100: Wireless charging device

110: Antenna device

115: Flexible printed circuit board

120: Inductive metal plate

125: Sensor connection terminal

130: Induction controller

140: Microprocessor

150: Wireless charging controller

160: Coil module

165: Coil connection terminal

Claims (10)

An antenna device includes: a flexible printed circuit board; a coil module, arranged on the flexible printed circuit board, wherein the coil module includes a sensing coil presenting a plurality of annular coils; at least one sensing metal plate, arranged on the flexible printed circuit board, wherein the at least one sensing metal plate and the coil module are arranged on the flexible printed circuit board without overlapping each other; a coil connection end, electrically connected to the coil module; and a sensing connection end, electrically connected to the at least one sensing metal plate. The antenna device as described in claim 1, wherein the induction coil in the coil module is a copper wire. The antenna device as described in claim 1, wherein the at least one sensing metal plate and the area where the coil module is configured on the flexible printed circuit board are separated by a predetermined distance. The antenna device as described in claim 1, wherein the coil connection end includes a first connection end and a second connection end, the first connection end is electrically connected to the first end of the induction coil, and the second connection end is electrically connected to the second end of the induction coil. A wireless charging device includes: a flexible printed circuit board; a coil module, arranged on the flexible printed circuit board, wherein the coil module includes an inductive coil presenting a plurality of annular coils; at least one inductive metal plate, arranged on the flexible printed circuit board, wherein the at least one inductive metal plate and the coil module are arranged on the flexible printed circuit board without overlapping each other; an inductive controller, electrically connected to the at least one inductive metal plate; a microprocessor, electrically connected to the inductive controller; and a wireless charging controller, electrically connected to the coil module and the microprocessor. A wireless charging device as described in claim 5, wherein the induction coil in the coil module is a copper wire. A wireless charging device as described in claim 5, wherein the at least one sensing metal plate and the area where the coil module is configured on the flexible printed circuit board are separated by a predetermined distance. The wireless charging device as described in claim 5 further comprises: A first magnetic object, disposed on the outer shell of the wireless charging device, fixing the position of the device to be charged by magnetic force. The wireless charging device as described in claim 8, wherein the device to be charged comprises: A second magnetic object, disposed on the device to be charged, and fixing the position of the device to be charged by the magnetic force between the first magnetic object and the second magnetic object when the device to be charged approaches the first magnetic object. The wireless charging device as described in claim 9, wherein the device to be charged is a touch pen, The device to be charged further includes a pen body, and when the pen body touches the at least one sensing metal plate, the capacitance value of the at least one sensing metal plate is changed.

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