Wireless charging system and wireless charging method

Abstract

The present application provides a wireless charging system and a wireless charging method, which include a current detection component, a photoelectric detection component, a power supply component and a transmitting component; the photoelectric detection component is used to send a first enable signal to the power supply component when it detects that a device to be charged is placed in a charging area; the current detection component sends a second enable signal to the power supply component when it detects that the current reaches a first current threshold; the power supply component is used to increase the output voltage to a first voltage value to drive the transmitting component to charge the device to be charged placed in the charging area when it receives the first enable signal and the second enable signal; based on the above-mentioned wireless charging system, one or more devices to be charged placed in the charging area can be charged at the same time, without the need to configure a corresponding wireless charging device for each device to be charged, thereby improving the overall charging efficiency and saving the charging cost.

Description

Technical Field

[0001] The present application relates to the field of wireless charging technology, and in particular to a wireless charging system and a wireless charging method. Background Art

[0002] In the existing one-to-many wireless charging system, wireless charging mainly relies on NFC (Near Field Communication) and MCU (Microcontroller Unit) to achieve wireless charging, among which NFC is used for identity authentication and fast pairing between the device to be charged and the wireless charging device, and MCU is used to manage and adjust the input and output voltage and current to ensure the conversion of electrical energy during the charging process.

[0003] However, due to the limitations of NFC technology, when implementing one-to-one or one-to-many wireless charging, the number of devices being charged is subject to certain restrictions. More importantly, NFC technology is complex and the cost remains high. Summary of the invention

[0004] The embodiments of the present application provide a wireless charging system and a wireless charging method, which simplifies the wireless charging system and prevents the occurrence of false triggering. At the same time, it improves the overall charging efficiency and saves the charging cost. The technical solution is as follows.

[0005] In one aspect, a wireless charging system is provided, the system comprising a current detection component, a photoelectric detection component, a power supply component and a transmitting component;

[0006] The photoelectric detection component is used to send a first enabling signal to the power supply component when detecting that a device to be charged is placed in the charging area;

[0007] When the current detection component detects that the current reaches the first current threshold, the current detection component sends a second enable signal to the power supply component;

[0008] The power supply component is used to increase the output voltage to a first voltage value to drive the transmitting component to charge the device to be charged placed in the charging area when receiving the first enable signal and the second enable signal.

[0009] In another aspect, a wireless charging method is provided, the method being performed by a power supply component in a wireless charging system, the method comprising:

[0010] Monitor the signals of the photoelectric detection component and the current detection component;

[0011] When receiving the first enable signal sent by the photoelectric detection component and the second enable signal sent by the current detection component, the output voltage is increased to a first voltage value to drive the transmitting component to charge the device to be charged placed in the charging area.

[0012] The technical solution provided by this application may have the following beneficial effects:

[0013] The wireless charging system provided in the embodiment of the present application includes a current detection component, a photoelectric detection component, a power supply component and a transmitting component; the photoelectric detection component is used to send a first enable signal to the power supply component when it detects that a device to be charged is placed in the charging area; the current detection component sends a second enable signal to the power supply component when it detects that the current reaches a first current threshold; the power supply component is used to increase the output voltage to a first voltage value to drive the transmitting component to charge the device to be charged placed in the charging area when receiving the first enable signal and the second enable signal; based on the above-mentioned wireless charging system, the devices to be charged placed in the charging area can be charged at the same time, and there is no need to configure a corresponding wireless charging device for each device to be charged, thereby improving the overall charging efficiency and saving the charging cost; dual signal control of the output voltage of the power supply component by the photoelectric detection component and the current detection component can avoid the occurrence of system false start-up caused by false touch. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the description, are used to explain the principles of the present application.

[0015] Figure 1 A schematic diagram of a wireless charging system provided by an exemplary embodiment of the present application is shown;

[0016] Figure 2 A schematic diagram of a wireless charging system provided by another exemplary embodiment of the present application is shown;

[0017] Figure 3 A schematic diagram of a photoelectric detection assembly provided by an exemplary embodiment of the present application is shown;

[0018] Figure 4 A schematic diagram of a wireless charging system provided by another exemplary embodiment of the present application is shown;

[0019] Figure 5 A flow chart of a wireless charging method provided by an exemplary embodiment of the present application is shown;

[0020] Figure 6 A block diagram of a wireless charging device provided by an exemplary embodiment of the present application is shown. DETAILED DESCRIPTION

[0021] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0022] It should be understood that the "several" mentioned in this article refers to one or more, and "multiple" refers to two or more. "And / or" describes the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0023] In order to simplify the wireless charging system and enrich the application scenarios of the wireless charging system, for example, the same wireless charging system can realize wireless charging of one device to be charged and also realize wireless charging of multiple devices to be charged, the embodiment of the present application provides a wireless charging system, Figure 1 FIG. 1 shows a schematic diagram of a wireless charging system provided by an exemplary embodiment of the present application. Figure 1 As shown, the system includes a current detection component 110, a photoelectric detection component 120, a power supply component 130 and a transmitting component 140;

[0024] The photoelectric detection component 120 is used to send a first enabling signal to the power supply component 130 when detecting that a device to be charged is placed in the charging area;

[0025] When the current reaches the first current threshold, the current detection component 110 sends a second enable signal to the power supply component 130;

[0026] The power supply component 130 is used to increase the output voltage to a first voltage value to drive the transmitting component 140 to charge the device to be charged placed in the charging area when receiving the first enable signal and the second enable signal.

[0027] In the wireless charging system, the current detection component 110 and the photoelectric detection component 120 are respectively connected to the power supply component 130 through corresponding control signal lines, and are used to send an enable signal to the power supply component 130. The power supply component 130 is electrically connected to the transmitting component 140 to provide a suitable voltage for the transmitting component 140 to drive it to work, thereby realizing the charging function of the device to be charged.

[0028] The photoelectric detection component 120 is a device that uses the photoelectric effect to detect whether an object exists, including a light-emitting element and a photoelectric receiving element. The light-emitting element emits light to the charging area. When the device to be charged is placed in the charging area, the light will be reflected or blocked by the device, and the light signal received by the photoelectric receiving element will change, and then the change is used to determine whether there is a device in the charging area. After detecting that a device to be charged is placed in the charging area, a first enable signal is sent to the power supply component 130 to trigger the subsequent charging preparation process.

[0029] The current detection component 110 is a component for real-time monitoring of the current size in the circuit. When the current reaches the first current threshold, a second enable signal is sent to the power supply component 130. The setting of the first current threshold can be determined by combining the safety requirements of the wireless charging system and the minimum current required for the normal operation of the transmitting component 140. In a possible implementation, in order to prevent the charging process from being mistakenly started in some abnormal circumstances (such as the presence of foreign objects in the charging area causing abnormal current fluctuations, etc.), the current detection component 110 sends a second enable signal to the power supply component after detecting that the duration of the current reaching the first current threshold exceeds the duration threshold; the duration threshold can be set based on actual needs.

[0030] The power supply component 130 is a component for supplying energy to the wireless charging system. In the embodiment of the present application, the power supply component 130 can adjust the output voltage according to the received external signal. In order to avoid incorrect charging operations caused by accidental touch, the power supply component 130 in the embodiment of the present application will increase its output voltage to the first voltage value only after simultaneously receiving the first enable signal sent by the photoelectric detection component 120 and the second enable signal sent by the current detection component 110; the first voltage value can be the voltage value that triggers the transmitting component 140 to wirelessly charge the device to be charged. Different settings can be corresponding to different charging requirements, and the present application does not limit this.

[0031] The transmitting component 140 is a component for realizing wireless charging, and the transmitting component can be a transmitting coil, wherein the number of transmitting coils can be one or more; the transmitting component 140 can generate an alternating magnetic field driven by the first voltage value output by the power supply component 130, and the range of the alternating magnetic field generated by the transmitting component 140 covers the charging area, and can wirelessly charge the device to be charged in the charging area; that is, when the device to be charged is placed in the charging area and it has a corresponding wireless charging receiving device (such as a receiving coil, etc.), it can receive the energy transmitted by the electromagnetic field, convert it into electrical energy and store it in the device battery to complete the wireless charging process.

[0032] In summary, the wireless charging system provided in the embodiment of the present application includes a current detection component, a photoelectric detection component, a power supply component and a transmitting component; the photoelectric detection component is used to send a first enable signal to the power supply component when it detects that a device to be charged is placed in the charging area; the current detection component sends a second enable signal to the power supply component when it detects that the current reaches a first current threshold; the power supply component is used to increase the output voltage to a first voltage value to drive the transmitting component to charge the device to be charged placed in the charging area when receiving the first enable signal and the second enable signal; based on the above-mentioned wireless charging system, the devices to be charged placed in the charging area can be charged at the same time, without the need to configure a corresponding wireless charging device for each device to be charged, thereby improving the overall charging efficiency and saving the charging cost; dual signal control of the output voltage of the power supply component by the photoelectric detection component and the current detection component can avoid the occurrence of system false start-up caused by false touch.

[0033] Figure 2 A schematic diagram of a wireless charging system provided by another exemplary embodiment of the present application is shown. Figure 2 As shown, the system includes a current detection component 110, a photoelectric detection component 120, a power supply component 130 and a transmitting component 140;

[0034] The photoelectric detection component 120 is used to send a first enabling signal to the power supply component 130 when detecting that a device to be charged is placed in the charging area;

[0035] When the current reaches the first current threshold, the current detection component 110 sends a second enable signal to the power supply component 130;

[0036] The power supply component 130 is used to increase the output voltage to a first voltage value to drive the transmitting component 140 to charge the device to be charged placed in the charging area when receiving the first enable signal and the second enable signal.

[0037] In another possible situation, the power supply component 130 outputs a second voltage value when it does not receive the first enable signal or the second enable signal; that is, when the power supply component 130 receives one of the enable signals, or does not receive any enable signal, the system remains in standby mode by outputting the second voltage value, thereby avoiding the occurrence of false system startup due to false touch.

[0038] The power supply component 130 may include a power socket, a filter component, an OVP (Over-Voltage Protection) / OCP (Over-Current Protection) component and a DC / DC component; wherein the power socket is an interface for physically connecting the power supply component to an external power supply, and the external power supply can be connected to the internal circuit of the power supply component to provide an energy source for subsequent electronic devices; the filter component is used to filter the interference in the power supply, remove the high-frequency noise and clutter in the power supply, and provide a more stable working environment for subsequent electronic components; the OVP / OCP component is used to monitor the voltage and current of the power supply, and when abnormal overvoltage or overcurrent occurs, corresponding protection measures are taken to prevent the power supply component and the device to be charged from being damaged, wherein the protection operation includes but is not limited to limiting the current or cutting off the circuit; the DC / DC component is the part of the power supply component that performs DC-DC conversion, and is used to convert the input DC power supply after filtering and protection processing into voltage to meet the needs of the devices to be charged with different voltage requirements. In the power supply component 130, the DC / DC component can be connected to the current detection component and the photoelectric detection component through corresponding control signal lines to receive the enable signal fed back by the current detection component and the photoelectric detection component;

[0039] The system also includes a signal source component 150 and a power amplifier component 160;

[0040] The signal source component is used to generate an initial signal and transmit the initial signal to the power amplifier component;

[0041] The power amplifier component is used to drive the transmitting component to charge the device to be charged placed in the charging area after amplifying the initial signal based on the first voltage value.

[0042] The initial signal generated by the signal source component 150 can be transmitted to the power amplifier component 160 through the driver component. After the power amplifier component 160 amplifies the signal, the amplified signal is transmitted to the transmitting component 140 to drive the transmitting component 140 to charge the device to be charged.

[0043] Furthermore, the system may also include a matching component and a filter component. The signal amplified by the power amplifier component can be transmitted to the transmitting component after passing through the matching component and the filter component in sequence; wherein the matching component is used to perform signal conditioning on the received signal and send the conditioned signal to the filter component; after the filter component performs interference filtering on the received signal, the processed signal is transmitted to the transmitting component. The matching component is used to achieve conjugate matching between the output impedance of the output signal and the input impedance of the receiving end (including the filter component and the subsequent transmitting component) through signal conditioning when the output impedance of the power amplifier component is different from the input impedance of the receiving end (including the filter component and the subsequent transmitting component), thereby reducing the energy loss during the signal transmission process and improving the power transmission efficiency; the type of the filter component can be selected based on the filtering requirements. Schematically, the filter component can be a low-pass filter, which is used to filter out high-frequency interference signals, retain useful low-frequency signals for energy transmission of wireless charging, and filter out interference signals, thereby avoiding interference signals from interfering with the electromagnetic field of wireless charging.

[0044] Optionally, the number of devices to be charged placed in the charging area is one or more. When the number of devices to be charged is multiple, the wireless charging system can wirelessly charge multiple devices to be charged at the same time. The devices to be charged placed in the charging area can be devices to be charged whose charging power is less than a specified power threshold, that is, the devices to be charged placed in the charging area are low-power devices to be charged, such as wireless headphones, smart headphones, sports bracelets, etc. The specified power threshold can be set based on actual needs, and this application does not limit this.

[0045] The photoelectric detection component includes a transmitter and a receiver; the photoelectric detection component can determine whether a device to be charged is placed in the charging area based on the reception of light emitted by the transmitter by the receiver.

[0046] Optionally, the photoelectric detection component may be a through-beam photoelectric detection component, or the photoelectric detection component may be a reflective photoelectric detection component; in the case where the photoelectric detection component is a through-beam photoelectric detection component, the photoelectric detection component determines that no device to be charged is placed in the charging area when the receiver receives the light emitted by the transmitter; the photoelectric detection component determines that a device to be charged is placed in the charging area when the receiver does not receive the light emitted by the transmitter. Figure 3 FIG. 1 shows a schematic diagram of a beam-type photoelectric detection assembly provided by an exemplary embodiment of the present application, such as Figure 3As shown, the transmitter 310 and the receiver 320 are arranged in relative positions, and the area between the two is the charging area 330; schematically, the transmitter can be an infrared transmitting tube, and the receiver can be an infrared receiving tube; when a device to be charged is placed in the charging area, the light emitted by the transmitter will be cut off, and the receiver cannot receive the light, and the photoelectric detection component determines that a device to be charged is placed in the charging area, generates a first enable signal, and sends the first enable signal to the power supply component through the control signal line between the power supply component and the power supply component; when no device to be charged is placed in the charging area, the light emitted by the transmitter is transmitted to the receiver without obstruction, the receiver receives the light, and the photoelectric detection component determines that no device to be charged is placed in the charging area.

[0047] In the case where the photoelectric detection component is a reflective photoelectric detection component, the photoelectric detection component determines that a device to be charged is placed in the charging area when the receiver receives the light emitted by the transmitter; the photoelectric detection component determines that no device to be charged is placed in the charging area when the receiver does not receive the light emitted by the transmitter; in the reflective photoelectric detection component, the transmitter and the receiver are arranged on the same side of the edge of the charging area. When a device to be charged is placed in the charging area, the light emitted by the transmitter will be reflected back, and the receiver can receive the light. The photoelectric detection component determines that a device to be charged is placed in the charging area, generates a first enable signal, and sends the first enable signal to the power supply component through the control signal line between the photoelectric detection component and the power supply component; when no device to be charged is placed in the charging area, the light emitted by the transmitter cannot be reflected back, the receiver does not receive the light, or the intensity of the received light is lower than the light intensity threshold, and the photoelectric detection component determines that no device to be charged is placed in the charging area.

[0048] When the device to be charged is placed in the charging area, it will affect the electromagnetic environment of the transmitting component, thereby causing changes in the system current. In order to prevent misjudgment caused by current changes caused by accidental touches, a first current threshold is set in the embodiment of the present application. The current detection component generates a second enable signal when it detects that the current reaches the first current threshold, and sends the second enable signal to the power supply component through a control signal between the power supply component and the power supply component; wherein, the first current threshold can be determined based on actual circuit requirements, and the present application does not limit this.

[0049] When the power supply component receives the first enable signal and the second enable signal, the output voltage is increased to a first voltage value, which may be the working power supply of the power supply component, or the first voltage value is positively correlated with the number of devices to be charged; when the first voltage value is positively correlated with the number of devices to be charged, the first voltage value increases within the range of the maximum working voltage as the number of devices to be charged increases.

[0050] Optionally, the system also includes an over-temperature protection component 170, which is used to monitor the temperature of the transmitting component; when the temperature of the transmitting component exceeds a temperature threshold, a third enable signal is sent to the power supply component, and the third enable signal is used to instruct the power supply component to reduce the output voltage. Figure 4 A schematic diagram of a wireless charging system provided by another exemplary embodiment of the present application is shown. Figure 4 As shown, the wireless charging system includes an over-temperature protection component 170, which can be connected to the power supply component 130. When the over-temperature protection component 170 detects that the temperature of the transmitting component 140 exceeds the temperature threshold, a third enable signal can be sent to the power supply component 130 through the control signal line between the power supply component 130 to instruct the power supply component 130 to reduce the output voltage. Accordingly, the power supply component 130 reduces the output voltage after receiving the third enable signal; schematically, after receiving the third enable signal, the power supply component 130 reduces the voltage to a preset voltage value, for example, to half of the current output voltage, etc.

[0051] Optionally, the current detection component sends a stop output signal to the power supply component when detecting that the current is less than a second current threshold; the second current threshold is less than the first current threshold;

[0052] The power supply component is used to reduce the output voltage to a second voltage value after receiving a stop output signal, and the second voltage value is a minimum voltage value for maintaining the system in standby mode.

[0053] During the charging process, the power of the device to be charged will gradually increase, the potential of the battery will gradually increase, and the potential difference between the device and the charging power supply will gradually decrease. When the device to be charged is close to a fully charged state, its potential is close to the output voltage of the charging power supply, the potential difference becomes smaller, and the charging current also decreases. Therefore, when the current detection component detects that the current is less than the second current threshold, it indicates that the current charging of the device to be charged is complete, and a stop output signal is sent to the power supply component to end the current charging process. Taking the device to be charged as a lithium battery as an example, in the constant current charging stage, the charging current is relatively stable. After entering the constant voltage charging stage, as the battery voltage gradually rises to close to the set voltage of the charging power supply, the charging current will gradually decrease until the charging current is less than the set cut-off current (ie, the second current threshold), and the charging process is completed.

[0054] After the power supply component receives the stop output signal, it will reduce the output voltage to the operating voltage of the standby mode. In standby mode, the system requires a certain amount of power to maintain basic functions, such as monitoring whether there is a new device to be charged placed in the charging area, or detecting whether the current reaches the first current threshold again, etc.

[0055] The power supply component may include a control circuit, which can adjust the output voltage according to the received signal. For example, the power supply component is configured with a switching power supply with feedback control. When a stop output signal is received, the control circuit changes the duty cycle of the switch tube, thereby reducing the output voltage to a voltage value.

[0056] In summary, the wireless charging system provided in the embodiment of the present application includes a current detection component, a photoelectric detection component, a power supply component and a transmitting component; the photoelectric detection component is used to send a first enable signal to the power supply component when it detects that a device to be charged is placed in the charging area; the current detection component sends a second enable signal to the power supply component when it detects that the current reaches a first current threshold; the power supply component is used to increase the output voltage to a first voltage value to drive the transmitting component to charge the device to be charged placed in the charging area when receiving the first enable signal and the second enable signal; based on the above-mentioned wireless charging system, one or more devices to be charged placed in the charging area can be charged at the same time without configuring a corresponding wireless charging device for each device to be charged, thereby improving the overall charging efficiency and saving the charging cost; dual signal control of the output voltage of the power supply component by the photoelectric detection component and the current detection component can avoid the occurrence of system false start-up caused by false touch.

[0057] Based on Figure 1 or Figure 2 The wireless charging cable system shown, Figure 5 A flowchart of a wireless charging method provided by an exemplary embodiment of the present application is shown. The method is performed by a power supply component in a wireless charging cable system. The method includes:

[0058] Step 510: monitor the signals of the photoelectric detection component and the current detection component.

[0059] Step 520, upon receiving the first enable signal sent by the photoelectric detection component and the second enable signal sent by the current detection component, increase the output voltage to a first voltage value to drive the transmitting component to charge the device to be charged placed in the charging area.

[0060] Accordingly, when the first enable signal is not received, or the second enable signal is not received, the output voltage is maintained at the second voltage value, so that the system remains in the standby mode.

[0061] To summarize, in the wireless charging method provided in the embodiment of the present application, the power supply component monitors the signals of the photoelectric detection component and the current detection component, and when receiving the first enable signal sent by the photoelectric detection component and the second enable signal sent by the current detection component, the voltage is increased to a first voltage value to drive the transmitting component to charge the device to be charged placed in the charging area. Through the above method, one or more devices to be charged placed in the charging area can be charged at the same time, and there is no need to configure a corresponding wireless charging device for each device to be charged, thereby improving the overall charging efficiency and saving the charging cost; dual signal control of the output voltage of the power supply component by the photoelectric detection component and the current detection component can avoid the occurrence of system false start-up caused by false touch.

[0062] Figure 6 A block diagram of a wireless charging device provided by an exemplary embodiment of the present application is shown. The device is applied to a power supply component of a wireless charging system and can be used to perform the following steps: Figure 5 All or part of the steps of the wireless charging method shown, such as Figure 6 As shown, the device may include:

[0063] A signal monitoring module 610 is used to monitor the signals of the photoelectric detection component and the current detection component;

[0064] The voltage control module 620 is used to increase the output voltage to a first voltage value to drive the transmitting component to charge the device to be charged placed in the charging area when receiving the first enable signal sent by the photoelectric detection component and the second enable signal sent by the current detection component.

[0065] To summarize, the wireless charging device provided in the embodiment of the present application is applied in a power supply component, so that the power supply component monitors the signals of the photoelectric detection component and the current detection component, and when receiving the first enable signal sent by the photoelectric detection component and the second enable signal sent by the current detection component, the voltage is increased to a first voltage value to drive the transmitting component to charge the device to be charged placed in the charging area. Through the above device, one or more devices to be charged placed in the charging area can be charged at the same time, and there is no need to configure a corresponding wireless charging device for each device to be charged, thereby improving the overall charging efficiency and saving the charging cost; dual signal control of the output voltage of the power supply component by the photoelectric detection component and the current detection component can avoid the occurrence of system false start-up caused by false touch.

[0066] Those skilled in the art will readily appreciate other solutions of the present application after considering the specification and practicing the application disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary technical means in the art that are not disclosed in the present application. The specification and examples are to be regarded as exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0067] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A wireless charging system, characterized in that: The system includes a current detection component, a photoelectric detection component, a power supply component and a transmitting component; The photoelectric detection component is used to send a first enabling signal to the power supply component when detecting that a device to be charged is placed in the charging area; When the current detection component detects that the current reaches the first current threshold, the current detection component sends a second enable signal to the power supply component; The power supply component is used to increase the output voltage to a first voltage value to drive the transmitting component to charge the device to be charged placed in the charging area when receiving the first enable signal and the second enable signal.

2. The system according to claim 1, characterized in that The number of devices to be charged placed in the charging area is one or more.

3. The system according to claim 1, characterized in that The photoelectric detection component includes a transmitter and a receiver; when the photoelectric detection component is a through-beam photoelectric detection component, The photoelectric detection component determines that no device to be charged is placed in the charging area when the receiver receives the light emitted by the transmitter; The photoelectric detection component determines that a device to be charged is placed in the charging area when the receiver does not receive the light emitted by the transmitter.

4. The system according to claim 1, characterized in that The photoelectric detection component includes a transmitter and a receiver; when the photoelectric detection component is a reflective photoelectric detection component, The photoelectric detection component determines that a device to be charged is placed in the charging area when the receiver receives the light emitted by the transmitter; The photoelectric detection component determines that no device to be charged is placed in the charging area when the receiver does not receive the light emitted by the transmitter.

5. The system according to claim 1, characterized in that The first voltage value is the operating voltage value of the power supply component, or the first voltage value is positively correlated with the number of devices to be charged.

6. The system according to claim 1, characterized in that The system also includes a signal source component and a power amplifier component; The signal source component is used to generate an initial signal, and transmit the initial signal to the power amplifier component; The power amplifier component is used to drive the transmitting component to charge the device to be charged placed in the charging area after amplifying the initial signal based on the first voltage value.

7. The system according to claim 1, characterized in that The system also includes an over-temperature protection component; The over-temperature protection component is used to monitor the temperature of the transmitting component; When the temperature of the transmitting component exceeds a temperature threshold, a third enable signal is sent to the power supply component, where the third enable signal is used to instruct the power supply component to reduce an output voltage.

8. The system according to claim 1, characterized in that The current detection component sends a stop output signal to the power supply component when detecting that the current is less than a second current threshold; the second current threshold is less than the first current threshold; The power supply component is used to reduce the output voltage to a second voltage value after receiving the stop output signal, and the second voltage value is a minimum voltage value for maintaining the system in standby mode.

9. The system according to claim 1, characterized in that The power supply component outputs a second voltage value when not receiving the first enable signal or the second enable signal.

10. A wireless charging method, characterized in that: The method is performed by a power supply component in a wireless charging system, and the method includes: Monitor the signals of the photoelectric detection component and the current detection component; When receiving the first enable signal sent by the photoelectric detection component and the second enable signal sent by the current detection component, the output voltage is increased to a first voltage value to drive the transmitting component to charge the device to be charged placed in the charging area.

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