Wireless charging circuit and computer

Abstract

The utility model discloses a wireless charging circuit and a computer, and relates to the wireless charging technology, and the circuit comprises a power switch chip, a capacitor module and a wireless charging coil. The power switch chip is respectively connected with the computer mainboard, the capacitor module and the wireless charging coil; the power switch chip is used for converting a power supply signal input by a computer mainboard into a pulse voltage signal and outputting the pulse voltage signal to the capacitor module and the wireless charging coil when receiving an enable signal of a computer mainboard controller; the capacitor module is used for resonating with the wireless charging coil to generate a resonance voltage signal and sending the resonance voltage signal to the wireless charging coil when receiving the pulse voltage signal; and the wireless charging coil is used for receiving the resonance voltage signal, converting the resonance voltage signal into an electromagnetic signal and sending the electromagnetic signal to a wireless charging receiving end. The problems that in the prior art, wireless charging of a computer case needs an additional power source for power supply, and a mainboard cannot be used for controlling a wireless charging switch are solved, and therefore the user experience is improved.

Description

Technical Field

[0001] This application relates to the field of wireless charging technology, and more particularly to a wireless charging circuit and a computer. Background Technology

[0002] With advancements in technology and increasing consumer demand for convenience, wireless charging technology has seen widespread application and development. In the computer field, wireless charging technology is also gradually being incorporated into chassis design, providing users with a more convenient charging experience.

[0003] The basic principle of wireless charging technology is to use electromagnetic wave induction for charging. The wireless charging transmitter (i.e., the charging base or charging pad) generates a changing magnetic field through a coil. When the wireless charging receiver (i.e., the device that needs to be charged, such as a mobile phone or tablet) is close to the transmitter, its internal coil will sense the magnetic field generated by the transmitter and generate an induced current, thereby charging the device.

[0004] Wireless charging of peripheral devices can be achieved by installing wireless charging modules and coils inside or outside the computer case. For example, some high-end computer cases have integrated wireless charging functionality; users simply need to place wirelessly charging-enabled devices such as mobile phones and tablets in a designated area within the case for fast charging. Furthermore, some computer cases employ a design that combines wireless charging with heat dissipation, improving charging efficiency while ensuring adequate cooling performance. However, current computer cases require an external power supply for wireless charging and suffer from the limitation of not being able to control the wireless charging switch via the motherboard. Utility Model Content

[0005] The main purpose of this application is to provide a wireless charging circuit and a computer, which aims to solve the technical problem that wireless charging of a computer chassis requires an additional power supply and that the motherboard cannot be used to control the wireless charging switch.

[0006] To achieve the above objectives, this application proposes a wireless charging circuit, which is applied to a computer;

[0007] The wireless charging circuit includes: a power switch chip, a capacitor module, and a wireless charging coil.

[0008] The power switch chip is connected to the computer motherboard, the capacitor module and the wireless charging coil respectively, and the capacitor module is connected to the wireless charging coil.

[0009] The power switch chip is used to convert the power supply signal input from the computer motherboard into a pulse voltage signal and output it to the capacitor module and the wireless charging coil when it receives the enable signal from the computer motherboard controller.

[0010] The capacitor module is used to resonate with the wireless charging coil to generate a resonant voltage signal and send it to the wireless charging coil when a pulse voltage signal is received.

[0011] The wireless charging coil is used to receive the resonant voltage signal and convert the resonant voltage signal into an electromagnetic signal to be sent to the wireless charging receiver.

[0012] Optionally, the wireless charging circuit further includes: a voltage regulator module;

[0013] The voltage regulator module is connected to the power switch chip, the capacitor module and the wireless charging coil respectively;

[0014] The voltage regulator module is used to regulate the pulse voltage signal output by the power switch chip.

[0015] Optionally, the voltage regulator module includes: a first voltage regulator diode and a second voltage regulator diode;

[0016] The first end of the first Zener diode is connected to the output pin of the power switch chip, the capacitor module and the wireless charging coil. The second end of the first Zener diode is connected to the second end of the second Zener diode, and the first end of the second Zener diode is grounded.

[0017] Optionally, the wireless charging circuit further includes: a fault detection module;

[0018] The fault detection module is connected to the fault detection pin of the power switch chip and the computer motherboard controller, respectively.

[0019] The fault detection module is used to send a fault signal to the computer motherboard controller when a fault signal is detected in the power switch chip.

[0020] Optionally, the fault detection module includes: a first resistor;

[0021] The first end of the first resistor is connected to the fault output pin of the power switch chip, and the second end of the first resistor is connected to the fault receiving pin of the computer motherboard controller.

[0022] Optionally, the capacitor module includes: a first capacitor, a second capacitor, and a third capacitor;

[0023] The first capacitor is connected in parallel with the second capacitor and the third capacitor. The first terminal of the first capacitor is connected to the output pin of the power switch chip and the wireless charging coil, respectively, and the second terminal of the first capacitor is grounded.

[0024] Optionally, the wireless charging coil includes: a first inductor;

[0025] The second end of the first inductor is grounded, and the first end of the first inductor is connected to the output pin of the power switch chip and the capacitor module, respectively.

[0026] Optionally, the wireless charging circuit further includes: a second resistor, a third resistor, and a fourth capacitor;

[0027] The first end of the second resistor is connected to the control pin of the computer motherboard controller, the second end of the second resistor is connected to the enable pin of the power switch chip, the first end of the third resistor and the first end of the fourth capacitor, and the second end of the third resistor and the second end of the fourth capacitor are grounded.

[0028] Optionally, the wireless charging circuit further includes: a fifth capacitor and a sixth capacitor;

[0029] The first end of the fifth capacitor and the first end of the sixth capacitor are respectively connected to the power supply pin of the computer motherboard and the input pin of the power switch chip, and the second end of the fifth capacitor and the second end of the sixth capacitor are respectively grounded.

[0030] In addition, to achieve the above objectives, this utility model also proposes a computer, which includes the wireless charging circuit described above.

[0031] One or more technical solutions proposed in this application have at least the following effects:

[0032] This application discloses a wireless charging circuit and a computer. The wireless charging circuit is applied to a computer. The wireless charging circuit includes a power switch chip, a capacitor module, and a wireless charging coil. The power switch chip is connected to the computer motherboard, the capacitor module, and the wireless charging coil, respectively. The capacitor module is connected to the wireless charging coil. The power switch chip, upon receiving an enable signal from the computer motherboard controller, converts the power supply signal input from the computer motherboard into a pulse voltage signal and outputs it to the capacitor module and the wireless charging coil. The capacitor module, upon receiving the pulse voltage signal, resonates with the wireless charging coil to generate a resonant voltage signal and sends it to the wireless charging coil. The wireless charging coil receives the resonant voltage signal and converts it into an electromagnetic signal, which is then sent to the wireless charging receiver. This solves the problem in the prior art that wireless charging of computer cases requires an external power supply and cannot be controlled by the motherboard, thereby improving the user experience. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the structure of the first embodiment of the wireless charging circuit proposed in this application;

[0035] Figure 2 This is a schematic diagram of the structure of the second embodiment of the wireless charging circuit proposed in this application.

[0036] Figure 3 This is a circuit schematic diagram of a second embodiment of the wireless charging circuit proposed in this application.

[0037] Figure 4 This is a schematic diagram showing the location of the wireless charging coil (electromagnetic coil) in the computer host of this application.

[0038] Explanation of icon numbers:

[0039]

[0040] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0041] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of this application and are not intended to limit this application.

[0042] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0043] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0044] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0045] The main solution of this application embodiment is: to power the wireless charging transmitter through the computer motherboard, and to control the enable signal of the power switch chip 1 through the computer motherboard controller EC, thereby controlling the wireless charging switch and improving the user experience.

[0046] This application provides a solution, proposing a wireless charging circuit and a computer. The wireless charging circuit is applied to a computer. The wireless charging circuit includes: a power switch chip 1, a capacitor module 2, and a wireless charging coil 3. The power switch chip 1 is connected to the computer motherboard, the capacitor module 2, and the wireless charging coil 3, respectively. The capacitor module 2 is connected to the wireless charging coil 3. The power switch chip 1, upon receiving an enable signal from the computer motherboard controller EC, converts the power supply signal input from the computer motherboard into a pulse voltage signal and outputs it to the capacitor module 2 and the wireless charging coil 3. The capacitor module 2, upon receiving the pulse voltage signal, resonates with the wireless charging coil 3 to generate a resonant voltage signal and sends it to the wireless charging coil 3. The wireless charging coil 3 receives the resonant voltage signal and converts it into an electromagnetic signal, sending it to the wireless charging receiver. This solves the problem in the prior art that wireless charging of computer cases requires an external power supply and cannot be controlled by the motherboard, thereby improving the user experience.

[0047] Based on this, this application provides a wireless charging circuit.

[0048] refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of the first embodiment of the wireless charging circuit proposed in this application.

[0049] Considering the problems with existing technologies where wireless charging for computer cases requires an external power supply and cannot be controlled by the motherboard, such as... Figure 1 As shown, the wireless charging circuit described in this embodiment includes: a power switch chip 1, a capacitor module 2, and a wireless charging coil 3;

[0050] The power switch chip 1 is connected to the computer motherboard, the capacitor module 2 and the wireless charging coil 3 respectively, and the capacitor module 2 is connected to the wireless charging coil 3.

[0051] The power switch chip 1 is used to convert the power supply signal input from the computer motherboard into a pulse voltage signal and output it to the capacitor module 2 and the wireless charging coil 3 when it receives the enable signal from the computer motherboard controller EC.

[0052] The capacitor module 2 is used to resonate with the wireless charging coil 3 to generate a resonant voltage signal and send it to the wireless charging coil 3 when a pulse voltage signal is received.

[0053] The wireless charging coil 3 is used to receive the resonant voltage signal and convert the resonant voltage signal into an electromagnetic signal to be sent to the wireless charging receiver.

[0054] It should be noted that, as Figure 4 As shown, Figure 4 This is a schematic diagram showing the location of the wireless charging coil 3 (electromagnetic coil) in the computer host of this application. The computer motherboard is located in the desktop computer host. The power switch chip 1 (Switch IC) can be AX8723, or it can be set according to the actual situation; this embodiment does not impose any restrictions. The computer motherboard controller EC is an embedded controller (EC). The enable signal can be low level or high level, or it can be set according to the actual situation; this embodiment does not impose any restrictions. The power supply signal can be 5V or 12V, or it can be set according to the actual situation; this embodiment does not impose any restrictions. The pulse voltage signal is a square wave pulse voltage. A square pulse voltage refers to a pulse signal whose voltage waveform presents a square wave shape. The waveform of the square wave pulse switches rapidly between positive and negative levels, forming a waveform similar to a rectangle. The resonant voltage signal is a sinusoidal voltage, i.e., AC voltage. The wireless charging receiver can be a mobile phone (mobile terminal device), or it can be set according to the actual situation; this embodiment does not impose any restrictions. The wireless charging coil 3 is an electromagnetic coil. The electromagnetic coil uses electromagnetic induction technology; when an AC voltage passes through the coil, it generates an alternating magnetic field. There is also a coil on the back of the phone. When the phone is brought close to the powered charging base (wireless charging coil 3), an induced current will be generated in the phone's coil in the changing magnetic field, thereby realizing wireless charging.

[0055] It is understandable that the wireless charging coil 3 can be regarded as an inductor, and the capacitor module 2 and the wireless charging coil 3 constitute an LC resonant circuit. That is, when the excitation frequency (resonant frequency) in the circuit matches the natural frequency of the circuit, resonance will occur. Therefore, the frequency of the pulse voltage signal is equal to the resonant frequency.

[0056] In a specific implementation, the power switch chip 1 is used to convert the power supply signal input from the computer motherboard into a pulse voltage signal and output it to the capacitor module 2 and the wireless charging coil 3 when it receives the enable signal from the computer motherboard controller EC. The capacitor module 2 is used to resonate with the wireless charging coil 3 to generate a resonant voltage signal when it receives the pulse voltage signal and send it to the wireless charging coil 3. The wireless charging coil 3 is used to receive the resonant voltage signal and convert it into an electromagnetic signal to send to the wireless charging receiver, thereby realizing wireless charging of the wireless charging receiver device and improving the user experience.

[0057] Based on the first embodiment of this application, in the second embodiment of this application, the content that is the same as or similar to the first embodiment described above can be referred to the above description, and will not be repeated hereafter. Based on this, please refer to... Figure 2 , Figure 2 This is a schematic diagram of the second embodiment of the wireless charging circuit proposed in this application.

[0058] Considering the need to regulate the pulse voltage signal output by power switch chip 1, such as Figure 2 As shown, the wireless charging circuit described in this embodiment also includes: a voltage regulator module 4;

[0059] The voltage regulator module 4 is connected to the power switch chip 1, the capacitor module 2 and the wireless charging coil 3 respectively;

[0060] The voltage regulator module 4 is used to regulate the pulse voltage signal output by the power switch chip 1.

[0061] It should be noted that the voltage regulator module 4 can be a Zener diode or a voltage regulator, or it can be set according to the actual situation. This embodiment does not impose any restrictions.

[0062] In a specific implementation, the voltage regulator module 4 is used to regulate the pulse voltage signal output by the power switch chip 1, thereby ensuring the stability of the pulse voltage signal output by the power switch chip 1.

[0063] Furthermore, considering whether there is an abnormality in the output of the power switch chip 1, the wireless charging circuit described in this embodiment also includes: a fault detection module 5;

[0064] The fault detection module 5 is connected to the fault detection pin of the power switch chip 1 and the computer motherboard controller EC, respectively.

[0065] The fault detection module 5 is used to send a fault signal to the computer motherboard controller EC when a fault signal is detected in the power switch chip 1.

[0066] It should be noted that the fault detection module 5 is used to compare whether the difference between the input voltage and the output voltage of the power switch chip 1 exceeds a preset threshold. When the difference between the input voltage and the output voltage exceeds the preset threshold, a fault signal is output. The fault signal can be a voltage signal or a current signal, or it can be set according to the actual situation. This embodiment does not impose any restrictions.

[0067] In a specific implementation, the fault detection module 5 is used to send a fault signal to the computer motherboard controller EC when a fault signal is detected in the power switch chip 1. When the computer motherboard controller EC receives the fault signal, it stops sending the enable signal to the power switch chip 1, thereby turning off the wireless charging function and improving the safety of wireless charging of the device.

[0068] Based on the second embodiment of this application, in the third embodiment of this application, the content that is the same as or similar to the second embodiment described above can be referred to the above description, and will not be repeated hereafter. Based on this, please refer to... Figure 3 , Figure 3 This is a circuit schematic diagram of a second embodiment of the wireless charging circuit proposed in this application.

[0069] like Figure 3 As shown, the voltage regulator module 4 in this embodiment includes: a first voltage regulator D1 and a second voltage regulator D2;

[0070] The first end of the first Zener diode D1 is connected to the output pin of the power switch chip 1, the capacitor module 2 and the wireless charging coil 3. The second end of the first Zener diode D1 is connected to the second end of the second Zener diode D2. The first end of the second Zener diode D2 is grounded.

[0071] It should be noted that the first Zener diode D1 and the second Zener diode D2 are Zener diodes, and can be set according to actual conditions. This embodiment does not impose any restrictions.

[0072] In the specific implementation, when the pulse voltage signal is high, the first Zener diode D1 is turned on and the second Zener diode D2 is regulated; when the pulse voltage signal is low, the first Zener diode D1 is regulated and the second Zener diode D2 is turned on.

[0073] Furthermore, the fault detection module 5 includes: a first resistor R1;

[0074] The first end of the first resistor R1 is connected to the fault output pin of the power switch chip 1, and the second end of the first resistor R1 is connected to the fault receiving pin of the computer motherboard controller EC.

[0075] It should be noted that the first resistor R1 can be a chip resistor (surface mount resistor) or a wire wound resistor, or it can be set according to the actual situation. This embodiment does not impose any restrictions.

[0076] In the specific implementation, when the first resistor R1 receives a fault signal, it transmits the fault signal to the computer motherboard controller EC. When the computer motherboard controller EC receives the fault signal, it stops sending the enable signal to the power switch chip 1, thereby turning off the wireless charging function and improving the safety of wireless charging of the device.

[0077] Furthermore, the capacitor module 2 includes: a first capacitor C1, a second capacitor C2, and a third capacitor C3;

[0078] The first capacitor C1 is connected in parallel with the second capacitor C2 and the third capacitor C3. The first terminal of the first capacitor C1 is connected to the output pin of the power switch chip 1 and the wireless charging coil 3, respectively, and the second terminal of the first capacitor C1 is grounded.

[0079] It should be noted that capacitor module 2 can also be composed of two capacitors connected in parallel, which can be set according to the actual situation. This embodiment does not impose any restrictions.

[0080] In the specific implementation, the first capacitor C1, the second capacitor C2, and the third capacitor C3, together with the wireless charging coil 3, form an LC resonant circuit, generating a resonant voltage (AC voltage). The electromagnetic coil utilizes electromagnetic induction technology; when an AC voltage passes through the coil, an alternating magnetic field is generated. There is also a coil on the back of the phone. When the phone is brought close to the powered charging base (wireless charging coil 3), an induced current is generated in the phone's coil within the changing magnetic field, thus achieving wireless charging.

[0081] Furthermore, the wireless charging coil 3 includes: a first inductor L1;

[0082] The second end of the first inductor L1 is grounded, and the first end of the first inductor L1 is connected to the output pin of the power switch chip 1 and the capacitor module 2 respectively.

[0083] It should be noted that the wireless charging coil 3 is one of the core components for realizing wireless charging technology. It is based on the principle of electromagnetic induction and transmits electrical energy through magnetic field coupling between two coils. The wireless charging coil 3 typically consists of a transmitting coil and a receiving coil. The transmitting coil is connected to a power source and generates a changing magnetic field through alternating current. This magnetic field induces an electromotive force in the receiving coil, thereby generating a current in the receiving coil.

[0084] In the specific implementation, the first capacitor C1, the second capacitor C2, and the third capacitor C3, together with the first inductor L1, form an LC resonant circuit, generating a resonant voltage (AC voltage). The electromagnetic coil utilizes electromagnetic induction technology; when an AC voltage passes through the coil, an alternating magnetic field is generated. There is also a coil on the back of the phone. When the phone is brought close to the powered charging base (wireless charging coil 3), an induced current is generated in the phone's coil within the changing magnetic field, thus achieving wireless charging.

[0085] Furthermore, the wireless charging circuit also includes: a second resistor R2, a third resistor R3, and a fourth capacitor C4;

[0086] The first end of the second resistor R2 is connected to the control pin of the computer motherboard controller EC. The second end of the second resistor R2 is connected to the enable pin of the power switch chip 1, the first end of the third resistor R3 and the first end of the fourth capacitor C4. The second end of the third resistor R3 and the second end of the fourth capacitor C4 are grounded.

[0087] It should be noted that the second resistor R2 and the third resistor R3 are used to divide the enable signal of the computer motherboard controller EC, and the fourth capacitor C4 is used to filter the enable signal of the computer motherboard controller EC.

[0088] In the specific implementation, the second resistor R2 and the third resistor R3 are used to divide the enable signal of the computer motherboard controller EC, thereby protecting the power switch chip 1. The fourth capacitor C4 is used to filter the enable signal of the computer motherboard controller EC, thereby improving the circuit's anti-interference capability.

[0089] Furthermore, the wireless charging circuit also includes: a fifth capacitor C5 and a sixth capacitor C6;

[0090] The first end of the fifth capacitor C5 and the first end of the sixth capacitor C6 are respectively connected to the power supply pin of the computer motherboard and the input pin of the power switch chip 1, and the second end of the fifth capacitor C5 and the second end of the sixth capacitor C6 are respectively grounded.

[0091] It should be noted that the fifth capacitor C5 and the sixth capacitor C6 are used to filter and regulate the power supply signals input to the computer motherboard.

[0092] In the actual implementation, the fifth capacitor C5 and the sixth capacitor C6 are used to filter and regulate the power supply signal input to the computer motherboard, thereby improving the circuit's anti-interference capability.

[0093] In addition, to achieve the above objectives, this utility model also proposes a computer, which includes the wireless charging circuit described above.

[0094] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A wireless charging circuit, comprising: Be applied to computer; The wireless charging circuit includes a power switch chip, a capacitor module and a wireless charging coil; The power switch chip is connected with the computer mainboard, the capacitor module and the wireless charging coil respectively, and the capacitor module is connected with the wireless charging coil; The power switch chip is configured to convert a power supply signal input by the computer mainboard into a pulse voltage signal and output the pulse voltage signal to the capacitor module and the wireless charging coil when an enable signal of a computer mainboard controller is received. The capacitor module is configured to generate a resonance voltage signal with the wireless charging coil and send the resonance voltage signal to the wireless charging coil when the pulse voltage signal is received. The wireless charging coil is configured to receive the resonance voltage signal and convert the resonance voltage signal into an electromagnetic signal and send the electromagnetic signal to a wireless charging receiving end.

2. The wireless charging circuit of claim 1, wherein, The wireless charging circuit further includes a voltage stabilizing module; The voltage stabilizing module is connected with the power switch chip, the capacitor module and the wireless charging coil respectively; The voltage stabilizing module is configured to stabilize the pulse voltage signal output by the power switch chip.

3. The wireless charging circuit of claim 2, wherein, The voltage stabilizing module includes a first voltage stabilizing tube and a second voltage stabilizing tube; A first end of the first voltage stabilizing tube is connected with an output pin of the power switch chip, the capacitor module and the wireless charging coil, a second end of the first voltage stabilizing tube is connected with a second end of the second voltage stabilizing tube, and a first end of the second voltage stabilizing tube is grounded.

4. The wireless charging circuit of claim 1, wherein, The wireless charging circuit further includes a fault detection module; The fault detection module is connected with a fault detection pin of the power switch chip and the computer mainboard controller respectively; The fault detection module is configured to send a fault signal to the computer mainboard controller when a fault signal of the power switch chip is detected.

5. The wireless charging circuit of claim 4, wherein, The fault detection module includes a first resistor; A first end of the first resistor is connected with a fault output pin of the power switch chip, and a second end of the first resistor is connected with a fault receiving pin of the computer mainboard controller.

6. The wireless charging circuit of claim 1, wherein, The capacitor module includes a first capacitor, a second capacitor and a third capacitor; The first capacitor is connected with the second capacitor and the third capacitor in parallel, a first end of the first capacitor is connected with an output pin of the power switch chip and the wireless charging coil respectively, and a second end of the first capacitor is grounded.

7. The wireless charging circuit of claim 1, wherein, The wireless charging coil includes a first inductor; A second end of the first inductor is grounded, and a first end of the first inductor is connected with an output pin of the power switch chip and the capacitor module respectively.

8. The wireless charging circuit of claim 1, wherein, The wireless charging circuit further includes a second resistor, a third resistor and a fourth capacitor; A first end of the second resistor is connected with a control pin of the computer mainboard controller, a second end of the second resistor is connected with an enable pin of the power switch chip, a first end of the third resistor and a first end of the fourth capacitor, a second end of the third resistor and a second end of the fourth capacitor are grounded.

9. The wireless charging circuit of claim 1, wherein, The wireless charging circuit further includes a fifth capacitor and a sixth capacitor; The first end of the fifth capacitor and the first end of the sixth capacitor are connected with the power supply pin of the computer mainboard and the input pin of the power switch chip respectively, and the second end of the fifth capacitor and the second end of the sixth capacitor are grounded.

10. A computer, comprising: The computer comprises the wireless charging circuit according to any one of claims 1 to 9.

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