TWI647597B - Charging mouse pad and method of use thereof - Google Patents

Abstract

A charging mouse pad includes a main unit, a power unit, a power supply unit, a control unit, and a power receiving unit. The power supply unit is disposed in the main unit and receives power from the power supply unit. The power supply unit includes an information control circuit, a display control circuit, a light-emitting component, a power supply circuit, and a power output circuit. The control unit includes a control computer to set and obtain an operating state of the power supply unit. The power receiving unit includes a power receiving circuit and a power storage component. The power supply circuit controls the power output circuit so that a charging electromagnetic force is generated on the surface of the main body to provide the power receiving unit to store power.

Description

Charging mouse pad and using method thereof

The invention relates to a charging mouse pad, in particular to a charging mouse pad with wireless power supply, and a method for using the charging mouse pad.

The mouse is a very common and commonly used computer input device. It can locate the cursor on the current screen, and operate the screen elements where the cursor passes by using keys and a wheel device. With the progress of the times, the mouse has gradually evolved into a wireless input device to improve the convenience of operation and carrying.

Most current wireless mice use batteries as a source of power. However, they often face the lack of battery or no batteries nearby to prepare them. As a result, the wireless mouse cannot be operated in time. It is unacceptable that the mouse loses power at an important moment, and it takes time to replace the battery.

In order to avoid the above situation, some people design a mouse pad with a wireless charging module. Referring to FIGS. 1 and 2, it is a new patent No. M507013 of the Republic of China. This patent discloses a wireless charging mouse pad body and mouse combination, which includes a mouse 3 and a mouse pad body 1. The mouse pad 1 is used for placing and operating the mouse 3. The mouse pad 1 is provided with a wireless charging module 2. The wireless charging module 2 includes a control circuit 21, A battery 23, an input unit 22, and a wireless discharge unit 24. The battery 23 is charged through the control of the input unit 22 and the control circuit 21, and the mouse 3 is wirelessly charged through the wireless discharge unit 24 .

The input unit 22 is interconnected with the control circuit 21, and the input unit 22 is exposed on a side surface of the mouse pad body 1. Specifically, the input unit 22 is an USB or a micro USB electronic connection The battery 23 provides power required for the control circuit 21 to operate through a cable connection. The battery 23 is interconnected with the control circuit 21 and receives and stores the power provided by the input unit 22. The battery 23 is a lithium battery. The battery, the wireless discharge unit 24 and the control circuit 21 are connected to each other, and the power in the battery 23 is transmitted and supplied by wireless.

Although the above wireless charging mouse pad body and mouse combination can achieve the purpose of charging the mouse, it still has the following disadvantages:

First, need to set up extra batteries

It is known that the battery is charged by external power such as USB, and then the power stored in the battery is wirelessly transmitted to the external mouse to supply power. This approach will increase costs and increase the installation volume of the mouse pad body. , Unfavorable to go out.

2.Unable to understand the status of battery charging and external discharge

The USB is used to charge the lithium battery, and the user cannot know whether the internal battery has the proper power. This design method is only to move the original battery inside the mouse to the outside of the mouse. When the mouse loses power, it is still necessary After charging the internal battery of the mouse pad body, the power stored in the battery can be transmitted to the external mouse through wireless transmission. Power supply, users cannot understand the status of the battery charging and discharging, and cannot solve the real problem.

Third, the mouse pad body has no other additional functions

Although the conventional mouse pad body has the control circuit to control the battery to discharge the wireless discharge unit, there is no additional function. For users, the purchase of a wireless charging mouse pad body will lose its attractiveness. .

Therefore, how to improve the wireless charging function of the wireless mouse and construct a wireless charging mouse pad that can meet the consumer's use behavior, make the charging mechanism of the mouse on the mouse pad more convenient and clear, and add other useful functions. Relevant technical staff urgently need to strive for the goal.

In view of this, an object of the present invention is to provide a rechargeable mouse pad, which includes a main unit, a power supply unit, a power supply unit, a control unit, and a power receiving unit.

The main body unit includes a main body having a surface.

The power unit includes a power source connected to the main body.

The power supply unit is disposed in the main body and receives power operation of the power source. The power supply unit includes an information control circuit, a display control circuit electrically connected to the information control circuit, and a light-emitting device electrically connected to the display control circuit. A component, a power supply circuit electrically connected to the information control circuit, and a power output circuit electrically connected to the power supply circuit.

The control unit includes an electrical connection with the information control circuit. The computer is then controlled to set and obtain the operating status of the power supply unit.

The power receiving unit is disposed on the surface and includes a power receiving circuit and a power storage component electrically connected to the power receiving circuit.

The power supply circuit controls the power of the power output circuit to generate a charging electromagnetic force on the surface of the main body.

When the power receiving circuit senses the charging electromagnetic force, the charging electromagnetic force can be converted into electricity and stored in the power storage component, and the information control circuit controls the display control circuit according to a change in the charging electromagnetic force.

Another technical means of the present invention is that the above-mentioned light-emitting component is disposed on the periphery of the main body, and the information control circuit controls the brightness and color of the light-emitting component through the display control circuit.

Another technical means of the present invention is that the aforementioned control computer has a light emitting mode setting module for setting the information control circuit to control the light emitting mode of the light emitting component.

Another technical means of the present invention is that the above-mentioned control computer further has an instant light emitting module to change the brightness and color of the light emitting component in real time.

Another technical means of the present invention is that the above-mentioned control computer further has a wireless charging setting module for setting the power supply circuit.

Another technical means of the present invention is that the above-mentioned power supply circuit has a detecting element for detecting the power output circuit to obtain a change in the charging electromagnetic force.

Another object of the present invention is to provide a charging mouse The method for using the pad is suitable for the above-mentioned charging mouse pad. The method for using the charging mouse pad includes a standby step, a device placement step, a charging control step, and a setting step.

The setting step is performed first, and the information control circuit controls a light emitting mode of the light emitting component.

Then, the standby step is performed, and the power supply circuit controls the power of the power output circuit so that the surface of the main body generates the charging electromagnetic force.

Then, the device placing step is performed, and the power receiving unit is disposed on a surface of the main body, so that the power receiving circuit senses the charging electromagnetic force, and converts the charging electromagnetic force into electric power and stores the electric power to the power storage component.

Finally, the charging control step is performed. The power supply circuit detects a change in the charging electromagnetic force to control the power of the power output circuit.

Another technical means of the present invention is that in the setting step described above, the control computer can set the information control circuit so that the information control circuit is in a charging light emitting mode, an instant light emitting mode, and a custom light emitting mode. One to control the light emitting component to emit light externally.

Another technical means of the present invention is that in the above standby step, the power supply circuit drives the power output circuit with low-power power.

Another technical means of the present invention is that in the charging control step described above, the detection element of the power supply circuit detects the magnetic resistance of the charging electromagnetic force, and when the magnetic resistance of the charging electromagnetic force rises, the power supply The circuit boosts the power of the power output circuit. When the magnetic resistance decreases, the power supply circuit reduces the power of the power output circuit.

A beneficial effect of the present invention is that the power supply circuit controls and detects the power output circuit to determine whether the power receiving unit is placed on the surface of the main body and provides the charging electromagnetic force to charge the power receiving unit. The information control circuit controls the light emitting component according to a set light emitting mode, so that the charging mouse pad can externally display the charging status of the power receiving unit.

3‧‧‧ main unit

31‧‧‧ main body

331‧‧‧ surface

4‧‧‧ Power supply unit

41‧‧‧ Power

5‧‧‧ Power Supply Unit

51‧‧‧Information control circuit

52‧‧‧Display control circuit

53‧‧‧Light-emitting components

54‧‧‧Power supply circuit

541‧‧‧detection element

55‧‧‧Power output circuit

551‧‧‧Charge electromagnetic force

6‧‧‧Control unit

61‧‧‧Control computer

611‧‧‧lighting mode setting module

612‧‧‧Real-time lighting module

613‧‧‧Wireless Charging Setting Module

7‧‧‧ Power receiving unit

71‧‧‧Power receiving circuit

72‧‧‧ Power Storage Module

901 ~ 904‧‧‧step

FIG. 1 is a schematic diagram of a device illustrating Taiwan Patent No. M507013, a wireless charging mouse pad body and a mouse combination; FIG. 2 is a schematic diagram of a structure illustrating a conventional setting; FIG. 3 is a schematic diagram of a device illustrating the present invention A preferred embodiment of a charging mouse pad and a method of using the same; FIG. 4 is a schematic structural diagram illustrating the setting of the preferred embodiment; FIG. 5 is a schematic diagram of a device illustrating the operation of one of the preferred embodiments Computer; FIG. 6 is a schematic diagram of a device illustrating a detecting element of the preferred embodiment; and FIG. 7 is a block diagram illustrating a method of using the preferred embodiment.

Regarding the features and technical contents of the related patent applications of the present invention, in the following detailed description of the preferred embodiments with reference to the drawings, Can be clearly presented.

3 and 4, a preferred embodiment of a rechargeable mouse pad according to the present invention includes a main unit 3, a power unit 4, a power supply unit 5, a control unit 6, and a Power receiving unit 7.

The main body unit 3 includes a main body 31 having a surface 331. The surface 331 of the main body 31 can be used to provide a mouse for the user to control the computer 61 to provide a correct index movement instruction.

The power unit 4 includes a power source 41 connected to the main body 31. Preferably, the power source 41 is a direct current power source, which is obtained by converting a commercial power with a transformer, so as to provide electrical power sufficient for operation. A power input port is provided on the main body 31 to provide electrical connection of the transformer, so that the power supply unit 5 receives power from the power source 41.

The power supply unit 5 is disposed in the main body 31 and receives power from the power source 41. The power supply unit 5 includes an information control circuit 51, a display control circuit 52 electrically connected to the information control circuit 51, and a The display control circuit 52 is electrically connected to a light-emitting component 53, a power supply circuit 54 electrically connected to the information control circuit 51, and a power output circuit 55 electrically connected to the power supply circuit 54.

The information control circuit 51 is an MCU (Machine Control Unit) of the charging mouse pad, and is the main information operation circuit in the charging mouse pad. It can receive external instructions for calculation, and issue external instructions or control other settings in the Electronic circuit in the main body 31.

In the preferred embodiment, the light-emitting component 53 is a full-color LED light bar disposed on the periphery of the main body 31, and the display control circuit 52 is the light-emitting device. The driving circuit of the light component 53, the information control circuit 51 sends instructions to the display control circuit 52 to control the brightness and color of the light component 53.

The power supply circuit 54 is a DC-to-AC transformer control circuit. The power output circuit 55 is a planar coil circuit. The power supply circuit 54 controls the AC power of the power output circuit 55 so that the power output circuit 55 An external electromagnetic force is generated, so that a charging electromagnetic force 551 is generated on the surface 331 of the main body 31.

The control unit 6 includes a control computer 61 electrically connected to the information control circuit 51. The control computer 61 can execute related application programs to set and obtain the operating state of the power supply unit 5. Preferably, the main body 31 is provided with a plurality of information ports, which can be in the form of USB or Micro USB, so as to provide the control computer 61 or other electronic devices to be inserted for digital information exchange.

When the control computer 61 and other electronic devices are inserted into the information port, the control computer 61 can exchange information with the electronic device. The power supply unit 5 can also use the information port to connect the control computer 61 and The electronic device performs wired charging. As the use of transmission lines for the exchange of digital information and the use of charging cables to charge the technical means have been known to the industry, and widely used in commercial products, will not be described in detail here.

5, the control computer 61 has a light emitting mode setting module 611 for setting the information control circuit 51, a real-time light emitting module 612, and a wireless charging setting module 613 for setting the power supply circuit 54. .

The light emitting mode setting module 611 of the control computer 61 can control the light emitting mode of the light emitting component 53. For example, the control computer 61 may use the light emitting mode setting module 611 to set the light emitting mode of the light emitting module 53 to a charging mode, a preset mode, a custom mode, or other modes.

When the light emitting mode of the light emitting component 53 is set to the charging mode, the information control circuit 51 controls the light emitting component 53 to emit light externally according to the power transmission status of the power receiving unit 7.

When the light-emitting mode of the light-emitting component 53 is set to a preset mode, the information control circuit 51 controls the light-emitting component 53 to emit light externally according to the setting information stored in the control computer 61 or the information control circuit 51.

When set to the custom mode, the user can design the color conversion step and the brightness conversion step in the control computer 61, and the redesigned information is stored in the information control circuit 51 to control the light emitting component 53 to emit light externally. .

The instant light-emitting module 612 can change the brightness and color of the light-emitting component 53 in real time. For example, when the control computer 61 plays music or sound effects, the real-time lighting module 612 can capture the sound information played by the control computer 61, convert it into corresponding light effect instruction information, and transmit it to the information control circuit in real time. In 51, the light-emitting component 53 is controlled to emit light externally, and the light-emitting component 53 changes the color and brightness of light emission in synchronization with the change of the sound effect played by the control computer 61.

The wireless charging setting module 613 can set the operation status of the power supply circuit 54. For example, the wireless charging setting module 613 can be controlled to be turned on or off, or output to the power output circuit 55 can be controlled. The power of the power, or the information of the power output detected by the power output circuit 55 is displayed on the control computer 61.

The power receiving unit 7 can be placed on the surface 331 and includes a power receiving circuit 71 and a power storage component 72 electrically connected to the power receiving circuit 71.

Preferably, the power receiving unit 7 is a mouse that controls the control computer 61. The mouse is provided with the power receiving circuit 71 and the power storage component 72, and the mouse is operated by the power of the power storage component 72. In actual implementation, the power receiving unit 7 may also be another electronic device provided with the power receiving circuit 71 and the power storage component 72, such as a mobile power source or a mobile phone device.

The power receiving circuit 71 is a planar coil circuit, and can receive electromagnetic force passing through the planar coil circuit and convert the electromagnetic force into electric power to be stored in the power storage component 72.

Preferably, a voltage conversion circuit is provided between the power receiving circuit 71 and the power storage component 72 to convert the power into a suitable DC voltage and stored in the power storage component 72. The voltage conversion circuit can also detect the power storage component The power of 72 is cut off when the power is full. Since the technical means of the wireless charging device are known to the industry, it will not be described in detail here.

When the power receiving circuit 71 is placed on the surface 331 of the main body 31, the charging electromagnetic force 551 generated by the power output circuit 55 will be sensed. The power receiving circuit 71 converts the charging electromagnetic force 551 into electricity and stores it in the power storage Component 72.

Referring to FIG. 6, when the light emitting mode setting module 611 is set to In the charging mode, the information control circuit 51 controls the display control circuit 52 according to the change of the charging electromagnetic force 551. The power supply circuit 54 has a detecting element 541 for detecting the power output circuit 55 to obtain a change in the charging electromagnetic force 551.

In the preferred embodiment, the detection element 541 is a resistor, and an electronic component for detecting a voltage drop of the resistor, to obtain the magnetic resistance of the charging electromagnetic force 551, to determine the power output circuit. 55 Whether or not electromagnetic coupling is performed with the power receiving circuit 71. In actual implementation, the detection element 541 can use other electronic detection circuits, and should not be limited to this.

When the power receiving circuit 71 captures the charging electromagnetic force 551 and converts the charging electromagnetic force 551 into electricity, a current flowing in the power receiving circuit 71 will generate the charging electromagnetic force on the power receiving circuit 71. The opposite electromagnetic force of the force 551 causes the charging electromagnetic force 551 to generate magnetic resistance. The power supply circuit 54 obtains the magnetic resistance of the charging electromagnetic force 551 through the detection element 541. The power supply circuit 54 will use the detection element The detection information of 541 controls the power of the power output circuit 55 and transmits the detection information to the information control circuit 51. The information control circuit 51 controls the display control circuit 52 according to the detection information.

Referring to FIG. 7, a method for using the preferred embodiment includes a setting step 901, a standby step 902, a device placing step 903, and a charging control step 904.

First, a setting step 901 is performed. The control computer 61 can set the information control circuit 51 so that the information control circuit 51 is in one of a charging light emitting mode, an instant light emitting mode, and a custom light emitting mode. To control the light-emitting component 53.

When the information control circuit 51 is set to the charging light emitting mode, the color and brightness of the light emitting component 53 can be controlled according to the detection information of the power supply circuit 54.

For example, when the power receiving unit 7 is not placed on the surface 331 of the main body 31, the light-emitting component 53 displays a dark blue color to the outside. When the power receiving unit 7 is placed on the surface 331 of the main body 31 and a large amount of charging is performed, the light emitting component 53 displays bright red to the outside. In addition, the information control circuit 51 will gradually convert the luminous color to blue according to the power supply status of the power receiving unit 7. With the light emitting state of the light emitting component 53, the user will make the user to the power receiving unit 7 The charging progress is clear at a glance.

When the information control circuit 51 is set to the real-time lighting mode, the information control circuit 51 changes the color and brightness of the light-emitting component 53 in real time according to the instructions of the control computer 61. For example, the control computer 61 converts the sound effect information into a light-emitting instruction and transmits it to the information control circuit 51 in real time to control the color and brightness of the light-emitting component 53 so that the light-emitting component 53 is synchronized with the sound effect.

When the information control circuit 51 is set to the custom lighting mode, the information control circuit 51 controls the color and brightness of the light-emitting component 53 according to the settings of the user. For example, the information control circuit 51 may control the light-emitting component 53 to emit light externally according to the pre-stored setting information in the information control circuit 51, or control the light-emitting component 53 to emit light externally with parameter information designed by the user. So that the light-emitting component 53 can present the light emission of the volcanic context, the light emission of the heartbeat context, or the light emission of other contexts.

Then, the standby step 902 is performed. The power supply circuit 54 controls the power of the power output circuit 55 so that the surface 331 of the main body 31 generates the charging electromagnetic force 551.

The wireless charging setting module 613 of the control computer 61 needs to turn on the power supply circuit 54 so that the power output circuit 55 can generate the charging electromagnetic force 551 to the outside. For example, the control computer 61 may display a control block to turn on the power supply circuit 54 by clicking, or when the computer 61 is in the sleep mode, the power supply circuit 54 is turned on by tapping any button. In addition, when the power receiving unit 7 is connected to the control computer 61, the power receiving unit 7 can also be woken up.

In the standby step 902, the power supply circuit 54 drives the power output circuit 55 with low-power power, so that the surface 331 of the main body 31 generates a proper charging electromagnetic force 551 to avoid consuming excessive power. When the information control circuit 51 is set to the charging light-emitting mode, the information control circuit 51 controls the color and brightness of the light-emitting component 53 according to the detection information of the power supply circuit 54 so that the user can know that there is currently no power reception. Unit 7 is performing wireless charging.

Then, the device placing step 903 is performed, and the power receiving unit 7 is disposed on the surface 331 of the main body 31, so that the power receiving circuit 71 senses the charging electromagnetic force 551, and converts the charging electromagnetic force 551 into electricity to be stored in the Power storage assembly 72.

Finally, the charging control step 904 is executed. The detecting element 541 of the power supply circuit 54 continuously detects the change of the charging electromagnetic force 551 to control the power of the power output circuit 55.

When the magnetic resistance of the charging electromagnetic force 551 rises, it means that the power receiving circuit 71 is currently placed on the surface 331 of the main body 31 and draws the energy of the charging electromagnetic force 551 for charging. The power supply circuit 54 enhances the power The power of the output circuit 55 is used to improve the charging efficiency of the power receiving unit 7.

When the magnetic resistance of the charging electromagnetic force 551 decreases, the power supply circuit 54 reduces the power of the power output circuit 55. Generally, when the power of the power storage component 72 is full, the power receiving circuit 71 will no longer generate a charging current, so that the power receiving circuit 71 will not generate an electromagnetic force opposite to the charging electromagnetic force 551. Therefore, the power supply circuit 54 drives the power output circuit 55 with low-power power, so that the surface 331 of the main body 31 generates a proper charging electromagnetic force 551 to avoid consuming excessive power.

When the information control circuit 51 is set to the charging light emitting mode, the information control circuit 51 controls the color and brightness of the light emitting component 53 according to the detection information of the power supply circuit 54.

The wireless charging setting module 613 of the control computer 61 can receive the detection information of the power supply circuit 54 to display the power output status of the power receiving unit 7 on the control computer 61. In actual implementation, the power receiving unit 7 can be connected to the information of the control computer 61 to transmit the charging status of the power storage component 72 to the control computer 61, and this should not be limited to this.

It can be known from the above description that the charging mouse pad of the present invention does have the following effects:

I. Increase product value

With the light-emitting component 53 provided on the main body 31, the The charging mouse pad emits dazzling light effects to the outside, which can increase the value of the product and attract buyers to buy.

Wireless mouse charging

The power supply circuit 54 controls the power of the power output circuit 55, so that the power output circuit 55 generates the charging electromagnetic force 551 on the surface 331 of the main body 31, so that the power receiving unit 7 placed on the surface 331 uses magnetic induction technology Perform wireless charging.

Third, the progress of wireless charging can be obtained

The power supply circuit 54 can detect the magnetic resistance of the charging electromagnetic force 551, further determine the charging progress of the power receiving unit 7, and can display the charging progress of the power receiving unit 7 on the control computer 61 and the light-emitting component 53.

In summary, the power supply circuit 54 of the present invention can control the power of the power output circuit 55 so that the power output circuit 55 generates the charging electromagnetic force 551 on the surface 331 of the main body 31, so that the power receiving circuit 71 is provided. And the electronic device of the power storage component 72 performs wireless charging, the information control circuit 51 can also control the color and brightness generated by the light emitting component 53 based on the reluctance of the charging electromagnetic force 551 detected by the power supply circuit 54 so that Since the user obtains the charging progress of the power receiving unit 7, the purpose of the invention can be achieved.

However, the above are only the preferred embodiments of the present invention. When the scope of implementation of the present invention cannot be limited by this, that is, the simple equivalent changes and modifications made according to the scope of the patent application and the description of the invention, All are still within the scope of the invention patent.

Claims (10)

A charging mouse pad includes: a main body unit including a main body having a surface; a power supply unit including a power source connected to the main body; a power supply unit disposed in the main body and receiving power from the power source, The power supply unit includes an information control circuit, a display control circuit electrically connected to the information control circuit, a light-emitting component electrically connected to the display control circuit, a power supply circuit electrically connected to the information control circuit, and a A power output circuit electrically connected to the power supply circuit. The power supply circuit controls the power of the power output circuit to generate a charging electromagnetic force on the surface of the main body. The information control circuit controls the display control circuit to change the light emission. The brightness and color of the component; a control unit including a control computer electrically connected to the information control circuit to set and obtain information of the power supply unit; and a power receiving unit placed on the surface of the main body, including an electric power A receiving circuit, and a power storage component electrically connected to the power receiving circuit; when the power When the sensing circuit receiving an electromagnetic force to be charged, the charging electromagnetic force may be converted into the power storage to the energy storage element, the information of the charging control circuit according to the change of the electromagnetic force controlling the display control circuit. The charging mouse pad according to item 1 of the scope of patent application, wherein the control computer has a light emitting mode setting module for setting the information control circuit to control the light emitting module's light emitting mode. According to the charging mouse pad described in the second item of the patent application scope, the control computer further has an instant light emitting module to change the brightness and color of the light emitting component in real time. According to the charging mouse pad described in item 3 of the patent application scope, wherein the control computer further has a wireless charging setting module for setting the power supply circuit. The charging mouse pad according to item 4 of the patent application scope, wherein the power supply circuit has a detecting element for detecting the power output circuit to obtain a change in the charging electromagnetic force. According to the charging mouse pad described in item 5 of the scope of the patent application, wherein the information control circuit obtains the change information of the charging electromagnetic force to change the brightness and color of the light-emitting component. A method for using a charging mouse pad is applicable to the charging mouse pad of any one of claims 1 to 6. The method for using the charging mouse pad includes the following steps: a setting step, and the information control circuit controls the The light emitting mode of the light emitting component; a standby step, the power supply circuit controls the power of the power output circuit so that the surface of the main body generates the charging electromagnetic force; a device placement step, the power receiving unit is set on the surface of the main body To enable the power receiving circuit to sense the charging electromagnetic force and convert the charging electromagnetic force into electricity and store the power in the power storage component; and a charging control step, the power supply circuit detects a change in the charging electromagnetic force to control the charging electromagnetic force The power of the power output circuit. The method for using the charging mouse pad according to item 7 of the scope of patent application, wherein, in the setting step, the control computer can set the information control circuit so that the information control circuit is in a charging light-emitting mode, a real-time One of a light-emitting mode and a custom light-emitting mode to control the light-emitting component to emit light externally. According to the method for using the charging mouse pad according to item 8 of the scope of the patent application, in the standby step, the power supply circuit drives the power output circuit with low-power power. According to the method of using the charging mouse pad described in item 9 of the scope of the patent application, in the charging control step, the detecting element of the power supply circuit is a magnetic resistance that detects the charging electromagnetic force. When the magnetic resistance of the force rises, the power supply circuit increases the power of the power output circuit, and when the magnetic resistance of the charging electromagnetic force decreases, the power supply circuit reduces the power of the power output circuit.