CN113064502B

CN113064502B - Wireless charging device and wireless charging panel thereof

Info

Publication number: CN113064502B
Application number: CN202110389812.XA
Authority: CN
Inventors: 罗俊译
Original assignee: Interface Optoelectronics Shenzhen Co Ltd; Interface Technology Chengdu Co Ltd; Yecheng Optoelectronics Wuxi Co Ltd; General Interface Solution Ltd
Current assignee: Interface Optoelectronics Shenzhen Co Ltd; Interface Technology Chengdu Co Ltd; General Interface Solution Ltd
Priority date: 2021-04-12
Filing date: 2021-04-12
Publication date: 2022-11-11
Anticipated expiration: 2041-04-12
Also published as: TW202240353A; TWI802867B; CN113064502A

Abstract

The present disclosure provides a wireless charging device, which includes a mouse and a wireless charging pad. The wireless charging panel comprises a wrist placing area, a piezoelectric module and a wireless charging module. The piezoelectric module is arranged in the wrist placing area, the wireless charging module is electrically connected with the piezoelectric module, and the wireless charging module is configured to wirelessly charge the mouse, so that the wrist is effectively protected, and the wireless charging of the mouse can be realized by using an electromagnetic induction technology without inserting electricity.

Description

Wireless charging device and wireless charging panel thereof

Technical Field

The present disclosure relates to a charging device, and more particularly, to a wireless charging device and a wireless charging pad thereof.

Background

In recent years, due to the development of industry and society, the purpose of providing products is to provide convenience, reliability, and economy, so that the products developed at present are more advanced than ever before, and thus contribute to society.

The mouse is a computer input device which can position the cursor on the screen and operate the screen element where the cursor passes through by means of the keys and the roller. Generally, a mouse can be broadly divided into a wired wireless mouse and a wireless mouse.

Although the wireless mouse is convenient and does not need to be connected with a computer, the wireless mouse has the defects that power is required to be supplied through a battery, and the wireless mouse can suddenly lose power in use at important time, so the power consumption of the battery of the wireless mouse can influence the use cost of a user. Some wireless mice have large power consumption, batteries need to be replaced frequently, the service life of the batteries in the current market is about three months, and the cost can be saved if rechargeable batteries are used. In addition, the long-term use of the mouse by modern people is also easy to cause wrist tunnel disease.

In addition, the wireless charging source technology is to conduct the energy of the wireless charging device to the electric equipment, and then the electric equipment converts the received energy into electric energy to be stored in the battery. The charger and the electric device transmit energy by magnetic field without exposing the conductive interface and connecting wires, but the biggest defect is that the wireless charging panel still needs to be plugged, and the wireless charging device cannot be really realized.

Therefore, the conventional wireless charging method still has inconvenience and defects, and needs to be further improved. In order to solve the above problems, the related art has not been able to make a thorough effort to solve the above problems, but has not been developed in an applicable manner for a long time. Therefore, how to achieve wireless and wrist protection is one of the important research and development issues, and is also an urgent need for improvement in the related art.

Disclosure of Invention

The present disclosure provides a wireless charging device and a wireless charging pad thereof, which can solve the problems of the prior art.

In one or more embodiments of the present disclosure, the wireless charging device provided by the present disclosure includes a mouse and a wireless charging pad. The wireless charging panel comprises a wrist placing area, a piezoelectric module and a wireless charging module. The piezoelectric module is arranged in the wrist placing area, the wireless charging module is electrically connected with the piezoelectric module, and the wireless charging module is configured to wirelessly charge the mouse.

In one or more embodiments of the present disclosure, the wireless charging pad further includes a charging pad body and a soft layer. The soft layer coats the charging panel body, and the wrist placing area is located on the charging panel body.

In one or more embodiments of the present disclosure, the area of the upper surface of the charging plate body is larger than the bottom area of the mouse, so that the charging plate body coated with the soft layer serves as a mouse pad.

In one or more embodiments of the present disclosure, the soft layer is a soft cloth covering the upper surface and the lower surface of the charging plate body.

In one or more embodiments of the present disclosure, the wrist rest area is elastomeric. The elastic body covers the piezoelectric module.

In one or more embodiments of the present disclosure, a wireless charging module includes an amplifier, a control circuit, and a wireless discharging unit. The amplifier is electrically connected with the piezoelectric module, the control circuit is electrically connected with the amplifier, the wireless discharge unit and the control circuit.

In one or more embodiments of the present disclosure, the amplifier is a micro charge amplifier.

In one or more embodiments of the present disclosure, the wireless discharge unit includes a plurality of discharge coils.

In one or more embodiments of the present disclosure, a mouse includes a receive coil, a rectifier, and a rechargeable battery. The receiving coil is inductively coupled with the wireless charging module, the rectifier is electrically connected with the receiving coil, and the rechargeable battery is electrically connected with the rectifier.

In one or more embodiments of the present disclosure, the rechargeable battery is a lithium battery.

In one or more embodiments of the present disclosure, the piezoelectric module is selected from a group consisting of a piezoelectric crystal, a piezoelectric ceramic, and a piezoelectric polymer.

In one or more embodiments of the present disclosure, the wireless charging pad provided by the present disclosure includes a wrist placing area, a piezoelectric module, and a wireless charging module. The piezoelectric module is arranged in the wrist placing area, the wireless charging module is electrically connected with the piezoelectric module, and the wireless charging module is configured to wirelessly charge the mouse.

In summary, the technical solution of the present disclosure has obvious advantages and beneficial effects compared with the prior art. By means of the technical scheme, the method can achieve considerable technical progress and has wide industrial utilization value. Specifically, the wireless charging device and the wireless charging pad thereof according to the present disclosure generate an ac charge by pressing and releasing against the wrist through the wrist placing area having the piezoelectric module while effectively protecting the wrist, and the piezoelectric module is electrically connected to the wireless charging module, and generates a magnetic field change through the ac charge to generate an induced current, so as to achieve wireless charging of the mouse by using an electromagnetic induction technology without plugging in electricity.

The foregoing description will be described in detail with reference to the embodiments and will provide further explanation of the technical solutions of the present disclosure.

Drawings

In order to make the aforementioned and other objects, features, advantages and embodiments of the disclosure more comprehensible, the following description is given:

FIG. 1 is a schematic view of a piezoelectric module in a first state according to some embodiments of the present disclosure;

FIG. 2 is a schematic view of a piezoelectric module in a second state according to some embodiments of the present disclosure;

FIG. 3 is a block diagram of a wireless charging pad according to some embodiments of the present disclosure;

fig. 4 is a schematic partial cross-sectional view of a wireless charging pad according to some embodiments of the present disclosure;

fig. 5 is a block diagram of another wireless charging pad according to some embodiments of the present disclosure; and the number of the first and second groups,

FIG. 6 is a block diagram of a mouse according to some embodiments of the present disclosure.

Reference numerals are as follows:

100 piezoelectric module 101 first state

110 ammeter 201 second state

300 wireless charging panel 301 wrist placing area

310 wireless charging module 320 amplifier

330 control circuit 340 wireless discharge unit

341 discharge coil 342 discharge coil

420 charging plate body 421 with upper surface

422 lower surface 430 softer layer

500 wireless charging panel 600 mouse

610 receiving coil 620 rectifier

630 rechargeable battery

Detailed Description

In order to make the disclosure more complete and complete, the following description is provided for illustrative purposes of implementing aspects and embodiments of the invention; it is not intended to be the only form in which the embodiments of the invention may be practiced or utilized. The various embodiments disclosed below may be combined with or substituted for one another where appropriate, and additional embodiments may be added to one embodiment without further recitation or description.

In the following description, numerous specific details are set forth to provide a thorough understanding of the following embodiments. However, embodiments of the invention may be practiced without these specific details. In other instances, well-known structures and devices are shown schematically in the drawings in order to simplify the drawing.

For a more complete and complete description of the present disclosure, reference is made to the accompanying drawings and the various embodiments described below, in which like numerals represent the same or similar elements. In other instances, well-known elements and steps have not been described in detail in order to avoid unnecessarily obscuring the present disclosure.

The words used herein have the ordinary meaning as commonly understood in the art, in the context of this document, and in the particular context, unless otherwise indicated. Certain terms used to describe the disclosure are discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the disclosure.

In the description and claims, unless the context requires otherwise, the word "a" or "an" may refer broadly to the word "a" or "an" or "the".

In the embodiments and claims, unless the context specifically limits, the word "set in …" also includes the word "set in …", "set in …" and "set under …".

As used herein, the terms "about" or "approximately" are used to modify the number of any slight variations that do not materially alter the nature of the article. Unless otherwise specified in the description of the embodiments, the range of error representing the modified numerical value of about, about or approximately is generally allowable within twenty percent, preferably within ten percent, and more preferably within five percent.

As used herein, the terms "comprises," "comprising," "including," "has," "having" and the like are intended to be open-ended terms of meaning and words of brevity. For example, the term "comprising" means that a combination of elements, components or steps does not exclude the presence of elements, components or steps other than those listed in a claim.

One aspect of the present disclosure provides a wireless charging device without plug-in using the piezoelectric module 100, which includes the wireless charging pad 300 and/or the mouse 600, and can be widely applied to various suitable electronic products. It should be noted that, the present disclosure skillfully arranges the piezoelectric module 100 in the wrist placing area 310 of the wireless charging pad 300, so that the pressing and releasing of the piezoelectric module against the wrist can generate an ac charge while effectively protecting the wrist, thereby wirelessly charging the mouse 600, and thereby achieving wireless and user-friendly wrist. Therefore, the wireless charging device of the present technical aspect can achieve considerable technical progress and has a wide industrial application value. The following describes an embodiment of the piezoelectric module 100 with reference to fig. 1 and 2, an embodiment of the wireless charging pad 300 with reference to fig. 3 and 4, and an embodiment of the mouse 600 with reference to fig. 6.

It should be understood that various embodiments of the wireless charging device and its wireless charging pad 300 and mouse 600 are described in conjunction with fig. 1-6. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough description of one or more embodiments. However, the present disclosure may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to effectively describe these embodiments. The term "for example" is used herein to mean "serving as an example, instance, or illustration. Any embodiment described herein as "for example" is not necessarily to be construed as preferred or advantageous over other embodiments.

First, in order to explain the electrical characteristics of the piezoelectric module 100 in detail, please refer to fig. 1 and 2, in which fig. 1 is a schematic diagram of the piezoelectric module 100 in a first state 101 according to some embodiments of the disclosure, and fig. 2 is a schematic diagram of the piezoelectric module 100 in a second state 201 according to some embodiments of the disclosure. Structurally, as shown in fig. 1 and 2, the piezoelectric module 100 is electrically connected to the current meter 110. It should be understood that the current meter 110 shown in fig. 1 and 2 is only for convenience of illustrating the current generated by the piezoelectric module 100, and in practice, the wireless charging pad 300 (shown in fig. 3 and 4) of the present disclosure may not need to include the current meter 110.

In the measurement process of the current meter 110, as shown in fig. 1 and 2, the first state 101 may be a compressed state, the second state 201 may be an extended state, the piezoelectric module 100 generates currents in different directions during the compression and extension, and the pointer of the current meter 110 deflects to different directions accordingly. Thus, by applying pressure and releasing the piezoelectric module 100, the piezoelectric module 100 can generate an alternating current charge.

In one or more embodiments of the present disclosure, the piezoelectric module 100 may be a piezoelectric crystal, a piezoelectric ceramic, a piezoelectric polymer, other piezoelectric materials, or any combination of the foregoing. For example, the piezoelectric ceramic can be barium titanate, lead zirconate titanate, other piezoelectric ceramic compounds, or any combination thereof, but is not limited thereto; the piezoelectric polymer may be polyvinylidene fluoride, similar derivatives, other piezoelectric polymer materials, or any combination thereof, but is not limited thereto.

To further illustrate the hardware architecture of the wireless charging pad 300, please refer to fig. 3 and 4, in which fig. 3 is a block diagram of a wireless charging pad 300 according to some embodiments of the disclosure, and fig. 4 is a partial cross-sectional view of a wireless charging pad 300 according to some embodiments of the disclosure.

As shown in fig. 3, in one or more embodiments of the present disclosure, the wireless charging pad 300 may include a piezoelectric module 100, a wrist rest area 301, and a wireless charging module 310. In terms of configuration, the piezoelectric module 100 may be disposed in the wrist placement area 301, the wireless charging module 310 is electrically connected to the piezoelectric module 100, and the wireless charging module 310 is configured to wirelessly charge the mouse 600 (shown in fig. 6). It should be understood that in the description of embodiments and claims, electrical connection refers to an element being electrically coupled to another element indirectly through another element or being electrically connected to another element directly without another element. For example, the piezoelectric module 100 can be directly electrically connected to the wireless charging module 310, or the piezoelectric module 100 can be indirectly electrically connected to the wireless charging module 310 through electronic circuits.

On the other hand, as shown in fig. 4, in one or more embodiments of the present disclosure, the wireless charging pad 300 may also include a charging pad body 420. In terms of configuration, the wrist rest area 301 is located on the charging pad body 420. In addition, the wireless charging module 310 of fig. 3 may be disposed on the charging board body 420 of fig. 4. Regarding the specific location of the wireless charging module 310, for example, the wireless charging module 310 can be disposed on or in the charging board body 420, but not limited thereto, and one skilled in the art should flexibly design according to the needs of the application.

On the other hand, regarding the specific location where the piezoelectric module 100 is disposed, for example, the piezoelectric module 100 may be disposed inside the wrist placing area 301; alternatively, the piezoelectric module 100 may be attached below the wrist placing area 301, and in terms of space, the piezoelectric module 100 is located between the wrist placing area 301 and the charging plate body 420; alternatively, the piezoelectric module 100 can be partially installed inside the wrist-placing region 301 and partially attached to the charging board body 420, but not limited thereto, and one skilled in the art can select it flexibly according to the needs.

Referring to fig. 4, in one or more embodiments of the present disclosure, the wireless charging pad 300 may also include a soft layer 430. As shown in fig. 4, the soft layer 430 covers the charging plate body 420. Thus, the soft layer 430 can effectively protect the charging plate body 420. Although the soft layer 430 of fig. 4 only covers the upper surface 421 and the lower surface 422 of the charging board body 420, this is not a limitation of the present invention, and in practice, the soft layer 430 may also selectively cover the wrist placing region 301, which should be flexibly selected by those skilled in the art according to the needs at the time.

In practice, in one or more embodiments of the present disclosure, the area of the upper surface 421 of the charging plate body 420 is larger than the bottom area of the mouse 600 (shown in fig. 6), so that the charging plate body 420 covering the soft layer 430 can be used as a mouse pad.

Regarding the material of the soft layer 430, in one or more embodiments of the present disclosure, the soft layer 430 may be a soft cloth cover or the like. In the structure, the soft cloth covers the upper surface 421 and the lower surface 422 of the charging board body 420. In practice, the cloth material is soft and good in air permeability, and the cloth surface provides a surface friction suitable for the mouse 600, so that the controllability of the mouse 600 can be improved, and the position of the cursor can be accurately controlled. Alternatively, in other embodiments of the present disclosure, the soft layer 430 may be a plastic surface, a wood fiber surface or other soft material, but not limited thereto, and one skilled in the art should flexibly select the soft layer according to the needs of the present disclosure.

When the user uses the mouse 600, the wrist of the user can be placed on the wrist placing area 301, thereby effectively avoiding the injury (e.g., wrist tunnel syndrome) caused by long-term use of the mouse. Through the piezoelectric module 100 disposed in the wrist placement area 301, while effectively protecting the wrist, the alternating current charges can be generated by the pressure and release of the pressing force against the wrist. The wireless charging module 310 generates a magnetic field change by using the ac charge, and further generates an induction current, thereby wirelessly charging the mouse 600. Since the wireless charging pad 300 generates power by the pressure and release of the depression of the wrist, the wireless charging pad 300 can wirelessly charge the mouse 600 by the electromagnetic induction technique without plugging. In other words, when the user wants to charge the mouse 600 by the wireless charging pad 300 with the wireless charging function, the user only needs to lean the hand on the wrist placing area 301 to operate the mouse 600, so as to perform the charging.

Regarding the material aspects of wrist rest area 301, in one or more embodiments of the present disclosure, wrist rest area 301 may be an elastomer. In the structure, the elastic body may wholly or partially cover the piezoelectric module 100. In practice, the wrist-rest area 301 is an area that is covered by an elastic body, and the elastic body deforms. For example, the elastomer may be rubber, derivatives thereof, or other elastic materials, but not limited thereto. The elastic wrist-rest area 301 not only can effectively apply pressure and release to the piezoelectric module 100, but also can flexibly support the wrist to keep it stable, so that the user can feel comfortable during the use process.

For further description of the electromagnetic induction technology, please refer to the structure of the wireless charging module 310 of fig. 3. In one or more embodiments of the present disclosure, as shown in fig. 3, the wireless charging module 310 includes an amplifier 320, a control circuit 330, and a wireless discharging unit 340. In the structure, the amplifier 320 is electrically connected to the piezoelectric module 100, the control circuit 330 is electrically connected to the amplifier 320, and the wireless discharging unit 340 is electrically connected to the control circuit 320.

In use, the pressure and release of the piezoelectric module 100 pressing against the wrist can generate an alternating current charge. The amplifier 320 amplifies the ac charges to improve the power transmission efficiency of the wireless discharging unit 340, and the control circuit 330 generates a magnetic field change by the ac charges through the wireless discharging unit 340 to generate an induced current, thereby wirelessly charging the mouse 600, and thus the wireless charging pad 300 can wirelessly charge the mouse 600 by the electromagnetic induction technology without being plugged.

In practice, for example, the control circuit 330 may be a microcontroller, a processor and/or other circuits, but is not limited thereto. It should be understood that the specific circuit design architecture within the control circuit 330 is well known to those skilled in the art and is not intended to be covered by the present disclosure, and thus will not be described in detail herein.

Regarding the type of amplifier 320, in one or more embodiments of the present disclosure, the amplifier 320 may be a micro charge amplifier. In practice, for example, the micro charge amplifier can convert the charge signal inputted with high impedance into a voltage signal with low impedance and output the voltage signal to the control circuit 330, so as to make the control circuit 330 operate, but the foregoing is merely an example, and all functions of the micro charge amplifier are not limited thereto.

With respect to the specific structure of the wireless discharging unit 340, please continue to refer to fig. 3. In one or more embodiments of the present disclosure, as shown in fig. 3, the wireless discharge unit 340 includes a plurality of discharge coils 341, 342, but not limited thereto. By means of the plurality of discharging

coils

341 and 342, a large area can be efficiently covered for wirelessly charging the mouse 600, so as to improve the stability of wireless charging when the mouse 600 moves on the wireless charging board 300. Although there are only two

discharge coils

341, 342 in fig. 3, this is not a limitation of the present invention, and in practice, under the condition that the unstable wireless charging can be avoided, one skilled in the art should flexibly adjust the number of discharge coils according to the need.

Fig. 5 is a block diagram of another wireless charging pad 500 according to some embodiments of the present disclosure. As shown in fig. 5, the wrist-placed area 301 is attached to the wireless charging pad 500. It should be understood that the wireless charging pad 500 of fig. 5 is substantially the same as the wireless charging pad 300 of fig. 3, except that the wireless charging module 310 of fig. 5 includes the wrist placing region 301 and the piezoelectric module 100. In practice, for example, the wrist placing area 301 and the piezoelectric module 100 may be disposed on or integrated with the wireless charging module 310, so that the overall structure of the wireless charging pad 500 is more integrated.

To further illustrate the hardware architecture of the mouse 600, please refer to fig. 3-6, wherein fig. 6 is a block diagram of a mouse 600 according to some embodiments of the present disclosure. In practice, the mouse 600 may be a wireless mouse, for example.

In one or more embodiments of the present disclosure, as shown in fig. 6, mouse 600 includes a receiving coil 610, a rectifier 620, and a rechargeable battery 630. In terms of configuration, the receiving coil 610 is inductively coupled to the wireless charging module 310 of fig. 3, the rectifier 620 is electrically connected to the receiving coil 610, and the rechargeable battery 630 is electrically connected to the rectifier.

In use, when the mouse 600 is placed on the wireless charging pad 300, at least one of the plurality of discharging

coils

341, 342 of the wireless charging pad 300 transmits power to the receiving coil 610 of the mouse 600 in a mutual inductance manner, the receiving coil 610 generates alternating current through electromagnetic induction, and the rectifier 620 converts the alternating current into direct current to the rechargeable battery 630, so that the rechargeable battery 630 can store power. In practice, when the mouse 600 is used by the user, the rechargeable battery 630 stores power for the operation of the mouse 600.

Regarding the type of rechargeable battery 630, in one or more embodiments of the present disclosure, the rechargeable battery 630 may be a lithium battery. Regarding the characteristics of lithium batteries, for example, lithium batteries have high energy density, light weight, no memory effect, and low self-discharge. Alternatively, in other embodiments of the present disclosure, the rechargeable battery 630 may be a nickel-metal hydride battery, a lithium ion polymer battery or other storage batteries, but not limited thereto, and one skilled in the art should flexibly select the rechargeable battery according to the needs of the user.

Compared with the

wireless charging boards

300 and 500 in one or more embodiments of the present disclosure, if the

wireless charging boards

300 and 500 are omitted, the piezoelectric module 100 or other power generating device is installed on the mouse 600 instead, and the piezoelectric module 100 or other power generating device generates power through micro-motions of the mouse 600, such as pressing, moving, and mouse wheel, but the power generating efficiency of the micro-motions of the mouse itself in the control experiment is much lower than the power generating efficiency of the piezoelectric module 100 in the wrist placing area 301 pressed against the wrist and released by the pressing force and the released corresponding power generating efficiency. Moreover, in the control experiment, the volume and weight of the mouse 600 are greatly increased by installing the piezoelectric module 100 or other power generating devices in the mouse 600, which is likely to cause serious damage to the wrist after long-term use.

In summary, the technical solution of the present disclosure has obvious advantages and beneficial effects compared with the prior art. The wireless charging device and the wireless charging board 300 thereof of the present disclosure can generate an ac charge by pressing and releasing against the wrist through the wrist placing area 301 with the piezoelectric module 100 while effectively protecting the wrist, and the piezoelectric module 100 is electrically connected to the wireless charging module 310, and generates a magnetic field change through the ac charge to generate an induced current, so as to wirelessly charge the mouse 600 by an electromagnetic induction technology without plugging in electricity.

While the present disclosure has been described with reference to the above embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure, and therefore the scope of the disclosure should be limited only by the appended claims.

Claims

1. A wireless charging device, comprising:

a mouse; and

a wireless charging pad, comprising:

a wrist placement area;

the piezoelectric module is arranged in the wrist placing area; and

a wireless charging module electrically connected to the piezoelectric module, the wireless charging module configured to wirelessly charge the mouse,

when the mouse is operated, the piezoelectric module presses against the wrist to release and generate alternating current charges, and the wireless charging module generates magnetic field changes by using the alternating current charges to wirelessly charge the mouse.

2. The wireless charging device of claim 1, wherein the wireless charging pad further comprises:

a charging pad body; and

and the soft layer coats the charging panel body, and the wrist placing area is positioned on the charging panel body.

3. The wireless charging device of claim 2, wherein the area of the upper surface of the charging plate body is larger than the bottom area of the mouse, so that the charging plate body covering the soft layer can be used as a mouse pad.

4. The wireless charging device of claim 2, wherein the soft layer is a soft cloth covering the upper surface and the lower surface of the charging board body.

5. The wireless charging device of claim 1, wherein the wrist rest area is an elastomer, and the elastomer covers the piezoelectric module.

6. The wireless charging apparatus of claim 1, wherein the wireless charging module comprises:

the amplifier is electrically connected with the piezoelectric module;

the control circuit is electrically connected with the amplifier; and

and the wireless discharge unit is electrically connected with the control circuit.

7. The wireless charging apparatus of claim 6, wherein the amplifier is a micro charge amplifier.

8. The wireless charging device of claim 6, wherein the wireless discharging unit comprises a plurality of discharging coils.

9. The wireless charging apparatus of claim 1, wherein the mouse comprises:

the receiving coil is inductively coupled with the wireless charging module;

the rectifier is electrically connected with the receiving coil; and

and the rechargeable battery is electrically connected with the rectifier.

10. The wireless charging apparatus of claim 9, wherein the rechargeable battery is a lithium battery.

11. The wireless charging apparatus of claim 9, wherein the piezoelectric module is selected from the group consisting of piezoelectric crystals, piezoelectric ceramics, and piezoelectric polymers.

12. A wireless charging pad, comprising:

a wrist placement area;

the piezoelectric module is arranged in the wrist placing area; and

the wireless charging module is electrically connected with the piezoelectric module and is configured to wirelessly charge the mouse, wherein when a mouse is operated, the piezoelectric module presses against the wrist to release pressure to generate alternating current charges, and the wireless charging module generates magnetic field changes by using the alternating current charges to wirelessly charge the mouse.