A novel Q-value wake-up circuit applicable to magnetic suction power banks

Abstract

The present application relates to a novel Q-value wake-up circuit applicable to a magnetic charging power bank. The novel Q-value wake-up circuit applicable to a magnetic charging power bank includes a power management module, a main control module, a wireless charging module, and a Q-value wake-up module. The power management module is used to supply power to the wireless charging module. The wireless power output end of the wireless charging module outputs power to supply power to the device to be charged. The power signal input end of the Q-value wake-up module is connected to the wireless power output end of the wireless charging module. The wake-up signal output end of the Q-value wake-up module is connected to the wake-up signal input end of the main control module. The wake-up signal output end of the main control module is connected to the wake-up signal input end of the power management module. Through the Q-value wake-up module, the real-time monitoring and response of the low-power standby state are realized, and the requirement of the traditional solution to provide a startup voltage for the wireless charging SOC through a physical button or an additional DC-DC boost circuit is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of Q-value wake-up circuits, and more particularly to a novel Q-value wake-up circuit applicable to a magnetic suction power bank. Background Art

[0002] Currently, in the development of magnetic suction power banks, in order to improve the user experience, it is particularly important to add the function of charging immediately when placed (that is, the mobile phone can automatically start charging when placed on the power bank without pressing a physical button). However, although the current industry solutions can achieve this function, there are problems of high cost and insufficient reliability. The main reason is that the operating voltage of most existing wireless charging SOCs is usually above 4V, which means that when the Q-value detection function is required to wake up wireless charging, the wireless charging SOC must be ensured to have sufficient operating voltage. However, since Q-value detection is usually triggered when the wireless charging module is in a low-power standby state, the system power supply voltage is not sufficient to meet the operating requirements of the wireless charging SOC at this time. Therefore, the common industry solution is to add a small DC-DC conversion circuit to provide a stable operating voltage for the wireless charging SOC by boosting. Although this method can achieve the Q-value detection wake-up function, it also brings a significant increase in cost and occupies more PCB design area. Summary of the Invention

[0003] In order to solve the problems of increasing cost, large PCB area occupation and insufficient reliability caused by adding a small DC-DC conversion circuit to ensure that the wireless charging SOC has sufficient operating voltage when waking up wireless charging, the present application provides a novel Q-value wake-up circuit applicable to a magnetic suction power bank.

[0004] A novel Q-value wake-up circuit applicable to a magnetic suction power bank, the novel Q-value wake-up circuit applicable to a magnetic suction power bank includes a power management module, a main control module, a wireless charging module and a Q-value wake-up module. The power management module is used to supply power to the wireless charging module. The wireless power output end of the wireless charging module outputs power to supply power to the device to be charged. The power signal input end of the Q-value wake-up module is connected to the wireless power output end of the wireless charging module. The wake-up signal output end of the Q-value wake-up module is connected to the wake-up signal input end of the main control module. The wake-up signal output end of the main control module is connected to the wake-up signal input end of the power management module;

[0005] When the device to be charged is placed in the charging area and the wireless charging module is powered off, the wireless charging module generates a corresponding power signal based on electromagnetic coupling with the device to be charged. After the Q-value wake-up module detects the power signal, it sends a corresponding wake-up signal to the power management module through the main control module to automatically wake up the power management module in the sleep state, and then power on the wireless charging module.

[0006] By adopting the above technical solution, by introducing the Q-value wake-up module and utilizing the electromagnetic coupling characteristic between the wireless charging module and the device to be charged, when the device to be charged is placed in the charging area, the wireless charging module will generate a weak power signal due to electromagnetic induction. The core function of the Q-value wake-up module is to detect this power signal in real time and use it as an input, and generate a wake-up signal through signal processing. The wake-up signal is transmitted to the main control module. After the main control module determines the validity of the signal according to the preset logic, it further generates a wake-up instruction and sends it to the power management module. After receiving the wake-up instruction, the power management module switches from the sleep state to the working state, provides sufficient working power for the wireless charging module, and thus starts the entire wireless charging process. Through the Q-value wake-up module, the real-time monitoring and response of the low-power standby state are realized, and the requirement of the traditional solution to provide a start-up voltage for the wireless charging SOC through a physical button or an additional DC-DC boost circuit is avoided. The Q-value wake-up module can directly start the circuit by using the weak signal generated by the electromagnetic coupling characteristic of the wireless charging module, which not only reduces the system complexity, but also significantly reduces the cost and the occupation of the PCB design space. In addition, through the participation of the main control module, the reliability of the wake-up signal processing process is ensured, and the situations of false wake-up or non-wake-up are avoided, so that the entire system improves the user experience and system reliability while reducing the cost.

[0007] Preferably, the Q-value wake-up module includes a resistor R29, a resistor R30, a capacitor C11, and a triode Q3. The first end of the resistor R29 is connected to the power supply, the second end of the resistor R29 is connected to the first conduction end of the triode Q3, the second conduction end of the triode Q3 is grounded, the first end of the resistor R30 is connected to the wireless power output end of the wireless charging module, the second end of the resistor R30 is connected to the controlled end of the triode Q3, and the capacitor C11 is connected between the second end of the resistor R29 and the ground.

[0008] By adopting the above technical solution, the resistor, capacitor, and triode in the Q-value wake-up module can work together to amplify and process the weak power signal generated by the wireless charging module, so as to accurately generate the wake-up signal, and transmit the wake-up signal to the power management module through the main control module, ensuring that the entire circuit can still achieve the accurate wake-up function in the low-power state, thereby improving the reliability and response speed of the system.

[0009] Preferably, the wireless charging module includes an input control unit, a bridge drive chip, and a resonance unit. The power input terminal of the input control unit is connected to the power input / output terminal of the power management module. The power output terminal of the input control unit is connected to the power input terminal of the bridge drive chip. The power output terminal of the bridge drive chip is connected to the power input terminal of the resonance unit. The resonance unit is configured to convert the input power into high-frequency alternating current and transmit energy to the device to be charged through the wireless charging coil in the resonance unit.

[0010] By adopting the above technical solution, an efficient electric energy conversion circuit can be formed by the input control unit, the bridge drive chip, and the resonance unit in the wireless charging module, converting the power input into high-frequency alternating current, and stably transmitting the electric energy to the device to be charged through the wireless charging coil, thereby improving the energy transmission efficiency and ensuring the power supply stability of the charging device.

[0011] Preferably, the resonance unit includes a resonance capacitor bank, a resistor R46, a capacitor C43, and a wireless charging coil. The first PWM signal terminal of the bridge drive chip is connected to the LP1 terminal of the wireless charging coil. The second PWM signal terminal of the bridge drive chip is connected to the first conduction terminal of the resonance capacitor bank. The second conduction terminal of the resonance capacitor bank is connected to the LP2 terminal of the wireless charging coil. The common node between the first PWM signal terminal of the bridge drive chip and the LP1 terminal of the wireless charging coil is connected to the first end of the resistor R46. The second end of the resistor R46 is connected to the first end of the capacitor C43. The common node between the second conduction terminal of the resonance capacitor bank and the LP2 terminal of the wireless charging coil is connected to the second end of the capacitor C43 on the one hand and to the power signal input terminal of the Q value wake-up module on the other hand.

[0012] By adopting the above technical solution, an efficient resonance circuit can be formed through the cooperation of the capacitor bank, the resistor, and the inductor in the resonance unit, thereby achieving efficient energy transmission in the wireless charging coil. At the same time, the resonance characteristics are used to enhance the electromagnetic coupling signal, ensuring that the Q value wake-up module can accurately detect the power signal, thereby further improving the system stability and wake-up sensitivity.

[0013] Preferably, the resonance capacitor bank includes a capacitor C53, a capacitor C55, a capacitor C56, and a capacitor C58, and the capacitor C53, the capacitor C55, the capacitor C56, and the capacitor C58 are connected in parallel.

[0014] By adopting the above technical solution, it is possible to achieve an even distribution of capacitance during high-frequency resonance through the parallel structure of the resonant capacitor bank, thereby improving the capacitance stability and reliability of the resonant unit, while reducing the capacitance heat loss and power attenuation under high-frequency operating conditions, thus enhancing the efficiency and durability of the system.

[0015] Preferably, the input control unit includes MOS transistor Q2, transistor Q5, resistor R16, and resistor R31. The first conduction end of the MOS transistor Q2 is connected to the power input / output terminal of the power management module. The second conduction end of the MOS transistor Q2 is connected to the power input terminal of the bridge drive chip. The first end of the resistor R16 is connected to the power input / output terminal of the power management module. The second end of the resistor R16 is connected to the first end of the transistor Q5. The second end of the transistor Q5 is grounded. The controlled end of the transistor Q5 is connected to the first end of the resistor R31. The second end of the resistor R31 is connected to the first enable signal output terminal of the main control module.

[0016] By adopting the above technical solution, it is possible to effectively control the power input and the power supply to the bridge drive chip through the combined design of the MOS transistor, transistor, and resistor in the input control unit, thereby ensuring precise regulation of the circuit current and voltage in different operating modes, avoiding overloading or undervoltage problems in the circuit, and thus improving the safety and adaptability of the system.

[0017] Preferably, the input control unit includes MOS transistor Q4, MOS transistor Q6, resistor R17, resistor R21, and transistor Q7. The first conduction end of the MOS transistor Q6 is connected to the positive terminal of the battery. The second conduction end of the MOS transistor Q6 is connected to the first conduction end of the MOS transistor Q4. The second conduction end of the MOS transistor Q4 is connected to the power input terminal of the bridge drive chip. The first conduction end of the transistor Q7 is connected to the controlled end of the MOS transistor Q4. The first conduction end of the transistor Q7 is connected to the controlled end of the MOS transistor Q6. The second conduction end of the transistor Q7 is grounded. The controlled end of the transistor Q7 is connected to the first end of the resistor R17. The second end of the resistor R17 is connected to the second enable signal output terminal of the main control module. The common node between the second conduction end of the MOS transistor Q6 and the first conduction end of the MOS transistor Q4 is connected to the first end of the resistor R21. The second end of the resistor R21 is connected to the first conduction end of the transistor Q7.

[0018] By adopting the above technical solution, it is possible to achieve stable control of the battery power output through the combined structure of the dual MOS transistors and the triode in the input control unit. At the same time, through the enable signal switching function of the triode, efficient switching of the power management module and the bridge drive chip can be realized, thereby ensuring a smooth transition between battery power supply and external power supply, and improving the continuity of power supply and the reliability of the system.

[0019] Preferably, the power management module includes a power management chip U1, a TYPEC interface terminal, and an inductor L1. The power input and output ports of the power management chip U1 are connected to the power input and output ports of the TYPEC interface terminal. The signal output end of the TYPEC interface terminal is connected to the charge and discharge identification end of the power management chip U1. The battery power output end of the power management chip U1 is connected to the first end of the inductor L1, and the second end of the inductor L1 is connected to the positive terminal of the battery.

[0020] By adopting the above technical solution, it is possible to realize automatic identification and charge and discharge management of the external power supply and the battery through the cooperative design of the power management chip and the TYPEC interface terminal in the power management module, and to adjust the current and voltage output of the battery through the introduction of the inductor, thereby improving the adaptability of the system to different power supply conditions and ensuring an efficient and safe charging process.

[0021] Preferably, the main control module includes a main control chip U3, a lamp indication unit, and a temperature sensing unit. The data communication end of the main control chip U3 is connected to the data communication end of the power management module for automatically waking up the power management module in the sleep state. The main control chip U3 is provided with a plurality of indication signal output ports, and each indication signal output port is respectively connected to the positive terminal of the corresponding light-emitting diode of the lamp indication unit. The negative terminal of the light-emitting diode is grounded. The temperature signal input end of the main control chip U3 is connected to the temperature signal output end of the temperature sensing unit.

[0022] By adopting the above technical solution, it is possible to achieve real-time feedback on the current working state of the device through the collaborative work of the main control chip and the lamp indication unit in the main control module. At the same time, the operating temperature of the device is monitored through the cooperation of the temperature sensing unit and the main control chip, so as to timely adjust the working state when the system is overheated or at low temperature, and improve the safety of device operation and the operability of users.

[0023] Preferably, the temperature sensing unit includes a resistor R15, a thermistor NTC1, and a capacitor C20. The first end of the resistor R15 is connected to the power supply. The second end of the resistor R15 is connected to the first end of the thermistor NTC1. The second end of the thermistor NTC1 is grounded. A capacitor C20 is connected between the second end of the resistor R15 and the ground.

[0024] By adopting the above technical solution, through the combined design of resistors, thermistors and capacitors in the temperature sensing unit, the temperature change of the device can be accurately detected, and the temperature signal is transmitted to the main control chip, so as to realize the real-time alarm or adjustment function for abnormal temperature states, avoid device damage or performance degradation caused by too high or too low temperature, and improve the stability and durability of the system.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] In the present invention, by introducing a Q-value wake-up module and utilizing the electromagnetic coupling characteristic between the wireless charging module and the device to be charged, when the device to be charged is placed in the charging area, the wireless charging module will generate a weak power signal due to electromagnetic induction. The core function of the Q-value wake-up module is to detect this power signal in real time and use it as an input, and generate a wake-up signal through signal processing. The wake-up signal is transmitted to the main control module. After the main control module determines the validity of the signal according to the preset logic, it further generates a wake-up instruction and sends it to the power management module. After receiving the wake-up instruction, the power management module switches from the sleep state to the working state, provides sufficient working power for the wireless charging module, and thus starts the entire wireless charging process. Through the Q-value wake-up module, the real-time monitoring and response to the low-power standby state are realized, and the need to provide a start-up voltage for the wireless charging SOC through a physical button or an additional DC-DC boost circuit in the traditional solution is avoided. The Q-value wake-up module can directly use the weak signal generated by the electromagnetic coupling characteristic of the wireless charging module to start the circuit, which not only reduces the system complexity, but also significantly reduces the cost and the occupation of the PCB design space. In addition, through the participation of the main control module, the reliability of the wake-up signal processing process is ensured, and the situations of false wake-up or non-wake-up are avoided, so that the entire system improves the user experience and system reliability while reducing the cost. Description of the Drawings

[0027] Figure 1 is a flowchart of a novel Q-value wake-up circuit applicable to a magnetic suction power bank in an embodiment of the present application.

[0028] Figure 2 is a partial circuit structure schematic diagram of the Q-value wake-up module in a novel Q-value wake-up circuit applicable to a magnetic suction power bank in an embodiment of the present application;

[0029] Figure 3 is a partial circuit structure schematic diagram of the resonance unit in a novel Q-value wake-up circuit applicable to a magnetic suction power bank in an embodiment of the present application;

[0030] Figure 4 is a partial circuit structure schematic diagram of the input control unit in a novel Q-value wake-up circuit applicable to a magnetic suction power bank in an embodiment of the present application;

[0031] Figure 5 It is a partial circuit structure diagram of a bridge drive chip in a novel Q - value wake - up circuit applicable to a magnetic - adsorption power bank in an embodiment of the present application;

[0032] Figure 6 It is a partial circuit structure diagram of a power management module in a novel Q - value wake - up circuit applicable to a magnetic - adsorption power bank in an embodiment of the present application;

[0033] Figure 7 It is a partial circuit structure diagram of a main control chip in a novel Q - value wake - up circuit applicable to a magnetic - adsorption power bank in an embodiment of the present application;

[0034] Figure 8 It is a partial circuit structure diagram of a lamp indication unit in a novel Q - value wake - up circuit applicable to a magnetic - adsorption power bank in an embodiment of the present application;

[0035] Figure 9 It is a partial circuit structure diagram of a temperature sensing unit in a novel Q - value wake - up circuit applicable to a magnetic - adsorption power bank in an embodiment of the present application. Detailed implementation manners

[0036] The following further elaborates on the present application with reference to the accompanying drawings.

[0037] In one embodiment, as Figure 1 shown, the present application discloses a novel Q - value wake - up circuit applicable to a magnetic - adsorption power bank, including: a novel Q - value wake - up circuit applicable to a magnetic - adsorption power bank. A novel Q - value wake - up circuit applicable to a magnetic - adsorption power bank includes a power management module, a main control module, a wireless charging module, and a Q - value wake - up module. The power management module is used to supply power to the wireless charging module. The wireless power output terminal of the wireless charging module outputs power to supply power to the device to be charged. The power signal input terminal of the Q - value wake - up module is connected to the wireless power output terminal of the wireless charging module. The wake - up signal output terminal of the Q - value wake - up module is connected to the wake - up signal input terminal of the main control module. The wake - up signal output terminal of the main control module is connected to the wake - up signal input terminal of the power management module;

[0038] When the device to be charged is placed in the charging area and the wireless charging module is powered off, the wireless charging module generates a corresponding power signal based on the electromagnetic coupling with the device to be charged. After the Q - value wake - up module detects the power signal, it sends a corresponding wake - up signal to the power management module through the main control module to automatically wake up the power management module in the sleep state, and then power on the wireless charging module.

[0039] In this embodiment, the power management module provides a working power supply for the wireless charging module and delivers the power to the wireless charging module through its power output terminal, ensuring that the wireless charging module can continuously supply power to the device to be charged under normal conditions. When the wireless charging module is in the standby or powered-off state, it can still generate a weak power signal based on the electromagnetic coupling characteristics with the device to be charged, and this signal is transmitted to the power signal input terminal of the Q-value wake-up module. The Q-value wake-up module amplifies and processes the received power signal through the internal circuit design to generate a valid wake-up signal, which is transmitted to the wake-up signal input terminal of the main control module through its wake-up signal output terminal. After receiving the wake-up signal, the main control module judges the validity of the signal according to the preset control logic and generates a wake-up instruction through its wake-up signal output terminal and sends it to the wake-up signal input terminal of the power management module. After receiving this wake-up instruction, the power management module switches from the sleep state to the working state and powers the wireless charging module again, enabling the wireless charging module to power on and start normal operation, thereby providing continuous power supply for the device to be charged. The entire control logic is based on the signal transmission between modules, triggered by the electromagnetic induction characteristics of the wireless charging module, the signal detection and conversion are realized by the Q-value wake-up module, and finally the main control module coordinates the signal transmission and processing to ensure that the power management module can respond in a timely manner, realizing the automatic wake-up and efficient operation of the system;

[0040] The main purpose of setting the wireless charging module to the sleep state is to reduce the power consumption of the system and extend the standby time of the device, thereby improving the overall user experience. When the wireless charging module does not detect the device to be charged, keeping it in the operating state will cause unnecessary energy consumption, especially in battery-driven devices such as magnetic suction power banks where the power resources are very limited. By setting the sleep state, it is ensured that only very little energy is consumed when the wireless charging module does not need to work, and at the same time, the automatic wake-up function is realized by using the weak signal generated by electromagnetic coupling, and the power supply is restored only when the device is detected to be placed. This design not only saves energy but also avoids frequent manual operations, improving the intelligence and user experience of the device.

[0041] In summary, by introducing the Q-value wake-up module and utilizing the electromagnetic coupling characteristics between the wireless charging module and the device to be charged, when the device to be charged is placed in the charging area, the wireless charging module will generate a weak power signal due to electromagnetic induction. The core function of the Q-value wake-up module is to detect this power signal in real time and use it as an input, and generate a wake-up signal through signal processing. The wake-up signal is transmitted to the main control module. After the main control module determines the validity of the signal according to the preset logic, it further generates a wake-up instruction and sends it to the power management module. After receiving the wake-up instruction, the power management module switches from the sleep state to the working state, provides sufficient working power for the wireless charging module, and thus starts the entire wireless charging process. Through the Q-value wake-up module, the real-time monitoring and response to the low-power standby state are realized, avoiding the need to provide a start-up voltage for the wireless charging SOC through a physical button or an additional DC-DC boost circuit in the traditional solution. The Q-value wake-up module can directly use the weak signal generated by the electromagnetic coupling characteristics of the wireless charging module to start the circuit, which not only reduces the system complexity, but also significantly reduces the cost and the occupation of the PCB design space. In addition, through the participation of the main control module, the reliability of the wake-up signal processing process is ensured, avoiding the occurrence of false wake-up or non-wake-up situations, and improving the user experience and system reliability while reducing the cost of the entire system.

[0042] Furthermore, as Figure 2 shown, the Q-value wake-up module includes a resistor R29, a resistor R30, a capacitor C11, and a triode Q3. The first end of the resistor R29 is connected to the power supply, the second end of the resistor R29 is connected to the first conduction end of the triode Q3, the second conduction end of the triode Q3 is grounded, the first end of the resistor R30 is connected to the wireless power output end of the wireless charging module, the second end of the resistor R30 is connected to the controlled end of the triode Q3, and a capacitor C11 is connected between the second end of the resistor R29 and the ground.

[0043] In this embodiment, the detection and processing of the signal generated by the wireless charging module and the generation of the wake-up signal are achieved through the cooperative action of resistor R29, resistor R30, capacitor C11, and triode Q3. The first end of resistor R29 is connected to the power supply to provide a stable voltage input, and its second end is connected to the first conduction end of triode Q3. At the same time, this node is also connected to the ground through capacitor C11, which is used to filter out high-frequency interference signals and stabilize the voltage reference of the circuit. The second conduction end of triode Q3 is grounded to ensure that a circuit loop can be formed when it works, so as to achieve conduction control. The first end of resistor R30 is connected to the wireless power output end of the wireless charging module, which is used to receive the power signal generated by the wireless charging module and transmit this signal to the controlled end of triode Q3. The intensity of this signal controls the conduction of triode Q3 after being adjusted by resistor R30. When the power signal generated by the wireless power output end of the wireless charging module is strong enough, it is transmitted to the controlled end of triode Q3 through resistor R30, triggering triode Q3 to conduct, forming a low-level signal, and this signal is output as a wake-up signal to the subsequent circuit, thus realizing the wake-up function. Through the cooperation of resistors, capacitors, and triodes, this design logic can not only accurately detect the signal of the wireless charging module but also avoid false triggering when the signal is weak, ensuring the stability and reliability of the entire system;

[0044] Specifically, resistor R29 plays the role of voltage division and current limiting. Its first end is connected to the power supply to provide a stable bias voltage for triode Q3. By limiting the current, resistor R29 protects the subsequent circuit components and prevents the circuit from being overloaded due to too strong an input signal. At the same time, its second end is grounded through capacitor C11 to provide a stable reference voltage for the circuit and suppress the possible high-frequency noise; the main function of resistor R30 is to limit the current and adjust the signal of the power signal from the wireless power output end of the wireless charging module. It transmits the signal to the controlled end (base or gate, depending on the type of triode) of triode Q3 and controls the conduction condition of the triode by matching the characteristics of Q3. Resistor R30 ensures that the transmitted signal level meets the input requirements of the triode and at the same time prevents high current from directly affecting the working stability of the triode; triode Q3 is the core control component in this circuit, responsible for detecting and amplifying the signal from the wireless charging module. Its controlled end is connected to resistor R30 to receive the power signal from the wireless charging module. When the input signal reaches the conduction threshold, Q3 conducts, pulling the potential of the first conduction end down to the ground potential and outputting a low-level signal. This low-level signal is used as a wake-up signal to trigger the action of the subsequent circuit. The role of triode Q3 ensures the sensitivity and accuracy of the entire wake-up circuit in signal detection and output response.

[0045] In summary, the resistor, capacitor, and triode in the Q-value wake-up module can work together to amplify and process the weak power signal generated by the wireless charging module, thereby achieving the precise generation of the wake-up signal. The wake-up signal is then transmitted to the power management module through the main control module, ensuring that the entire circuit can still achieve precise wake-up function in the low-power state, thus improving the reliability and response speed of the system.

[0046] Further, as Figures 3 - 5 shown, the wireless charging module includes an input control unit, a bridge drive chip, and a resonance unit. The power input terminal of the input control unit is connected to the power input / output terminal of the power management module. The power output terminal of the input control unit is connected to the power input terminal of the bridge drive chip. The power output terminal of the bridge drive chip is connected to the power input terminal of the resonance unit. The resonance unit is used to convert the input power into high-frequency alternating current and transmit energy to the device to be charged through the wireless charging coil in the resonance unit.

[0047] In this embodiment, the wireless charging module is composed of an input control unit, a bridge drive chip, and a resonance unit. The energy transfer and signal processing functions are realized through clear port connections and logical collaborations among the modules. The power input terminal of the input control unit is connected to the power input / output terminal of the power management module, responsible for receiving the DC power provided by the power management module, and stabilizing and regulating the input power through its internal control circuit to ensure that the voltage and current of the output power are suitable for the requirements of the subsequent circuit. The power output terminal of the input control unit is connected to the power input terminal of the bridge drive chip. After receiving the DC power, the bridge drive chip converts the DC power into high-frequency alternating current through its internal full-bridge or half-bridge structure and provides the required high-frequency AC power for the resonance unit. The power output terminal of the bridge drive chip is connected to the power input terminal of the resonance unit. The resonance unit modulates and enhances the received high-frequency alternating current through its internal resonance circuit to ensure that the resonance frequency matches the wireless charging frequency designed by the system. The wireless charging coil in the resonance unit plays a key role in this process. It converts the high-frequency alternating current into magnetic field energy through electromagnetic induction and transmits energy to the device to be charged, realizing non-contact power supply. The entire circuit logic forms a complete and efficient wireless charging link through the power regulation of the input control unit, the energy conversion of the bridge drive chip, and the resonance matching and electromagnetic energy transmission of the resonance unit, ensuring that the energy is reliably transmitted from the power management module to the device to be charged.

[0048] In summary, an efficient electric energy conversion loop can be formed through the input control unit, bridge drive chip, and resonance unit in the wireless charging module, converting the power input into high-frequency alternating current and stably transmitting the electric energy to the device to be charged through the wireless charging coil, thereby improving the energy transfer efficiency and ensuring the power supply stability of the charging device.

[0049] Further, asFigure 3 As shown, the resonant unit includes a resonant capacitor bank, resistor R46, capacitor C43, and a wireless charging coil. The first PWM signal terminal of the bridge drive chip is connected to the LP1 terminal of the wireless charging coil. The second PWM signal terminal of the bridge drive chip is connected to the first conduction terminal of the resonant capacitor bank. The second conduction terminal of the resonant capacitor bank is connected to the LP2 terminal of the wireless charging coil. The common node between the first PWM signal terminal of the bridge drive chip and the LP1 terminal of the wireless charging coil is connected to the first end of resistor R46. The second end of resistor R46 is connected to the first end of capacitor C43. The common node between the second conduction terminal of the resonant capacitor bank and the LP2 terminal of the wireless charging coil is connected to the second end of capacitor C43 on one hand and to the power signal input terminal of the Q-value wake-up module on the other hand.

[0050] In this embodiment, the resonant unit realizes the resonance and transmission of high-frequency energy through the cooperation of the resonant capacitor bank, resistor R46, capacitor C43, and the wireless charging coil. The connection relationships and logic designs of each port ensure the functional stability of the circuit and the accuracy of signal processing. The first PWM signal terminal of the bridge drive chip is connected to the LP1 terminal of the wireless charging coil to provide a high-frequency pulse signal to the wireless charging coil to drive the coil to generate a high-frequency magnetic field. The second PWM signal terminal of the bridge drive chip is connected to the first conduction terminal of the resonant capacitor bank, and the second conduction terminal of the resonant capacitor bank is further connected to the LP2 terminal of the wireless charging coil to form a complete resonant circuit. This resonant circuit adjusts the resonant frequency of the system through the resonant capacitor bank to match the design frequency of the wireless charging system, thereby optimizing the power transmission efficiency. The common node between the first PWM signal terminal of the bridge drive chip and the LP1 terminal of the wireless charging coil is connected to the first end of capacitor C43 through resistor R46. The presence of resistor R46 limits the impact of current mutation on capacitor C43 and provides a certain impedance matching for the subsequent circuit. The second end of capacitor C43 is connected to the common node between the second conduction terminal of the resonant capacitor bank and the LP2 terminal of the wireless charging coil. This node is not only an important part of the resonant circuit but also transfers the electromagnetic coupling signal in the resonant circuit to the wake-up module by connecting to the power signal input terminal of the Q-value wake-up module. Through this connection design, the resonant unit can not only ensure the efficient transmission of high-frequency energy but also extract weak signals through the common node to supply the Q-value wake-up module, realizing signal detection and subsequent processing. The entire control logic provides technical support for the stable operation and automatic wake-up function of the wireless charging system through the efficient resonance of the resonant circuit and the accurate extraction and transmission of signals;

[0051] Specifically, the main function of the resonant capacitor bank is to cooperate with the wireless charging coil to form a resonant circuit. Through its resonant characteristics, the resonant capacitor bank can adjust the resonant frequency of the entire system to match the operating frequency of the wireless charging module, thereby improving the efficiency and stability of energy transmission. In addition, the resonant capacitor bank adopts a parallel design, which can share the voltage and current loads, reduce the working pressure of a single capacitor, and improve the reliability and durability of the circuit; the main function of resistor R46 is to limit the amplitude of the transient current in the circuit, playing the role of current limiting and impedance matching. In a high-frequency resonant environment, R46 can suppress the current spikes caused by the PWM signal of the bridge drive chip, protecting subsequent components such as capacitor C43 from being impacted. In addition, it can also reduce high-frequency interference in the signal and optimize the performance of the resonant circuit; the function of capacitor C43 is to filter and smooth the signal. It buffers the signal fluctuations in the resonant circuit through combination with R46, filters out high-frequency noise and transient spike signals, ensuring that the signal sent to the Q-value wake-up module is more stable and accurate. At the same time, capacitor C43 provides certain support for the stability of the resonant circuit, helping to maintain the normal operation of the resonant circuit at the designed frequency; the wireless charging coil is the core component of the resonant unit, and its function is to achieve energy transmission through electromagnetic induction. When the bridge drive chip supplies high-frequency alternating current to the coil, the coil generates a high-frequency magnetic field and transfers the magnetic field energy to the receiving coil of the device to be charged in a non-contact manner. The wireless charging coil also adjusts its working state through the resonant circuit, and together with the resonant capacitor bank, ensures the energy transmission efficiency of the entire wireless charging system.

[0052] In summary, through the coordinated operation of the capacitor bank, resistor, and inductor in the resonant unit, an efficient resonant circuit can be formed, thereby achieving efficient energy transmission in the wireless charging coil. At the same time, through the resonant characteristics, the electromagnetic coupling signal is enhanced, ensuring that the Q-value wake-up module can accurately detect the power signal, thereby further improving the stability and wake-up sensitivity of the system.

[0053] Furthermore, as Figure 3 shown, the resonant capacitor bank includes capacitor C53, capacitor C55, capacitor C56, and capacitor C58, and capacitor C53, capacitor C55, capacitor C56, and capacitor C58 are arranged in parallel.

[0054] In this embodiment, the resonant capacitor bank is composed of capacitor C53, capacitor C55, capacitor C56, and capacitor C58. All capacitors are connected in parallel. Their connection relationship and logic design ensure the stability and reliability of the resonant circuit. Through parallel connection, the voltage across each capacitor remains the same, but the current is distributed according to the capacitance value of each capacitor. The parallel design logic can significantly increase the total capacitance value, thereby adjusting the resonant frequency to the required operating frequency to adapt to the operating requirements of the wireless charging module. At the same time, through the sharing effect of multiple capacitors, the current load on a single capacitor can be effectively reduced, reducing heat generation and stress under high-frequency operation, thereby improving the durability and performance stability of the entire circuit. When the capacitors operate in parallel, the total capacitance value is the algebraic sum of each capacitance value. This characteristic enables the system to provide a greater energy storage capacity during high-frequency operation, enhancing the energy regulation and storage effect of the resonant circuit. In addition, the parallel capacitor bank can also disperse the power distribution in the resonant circuit, preventing a single capacitor from bearing excessive power and causing failure, thereby further improving the reliability and safety of the system. This design logic provides stable parameter support for the resonant circuit by making full use of the parallel characteristics of capacitors, ensuring that the entire wireless charging system has stronger durability and adaptability while operating efficiently.

[0055] In summary, the parallel structure of the resonant capacitor bank can achieve an even distribution of capacitance during high-frequency resonance, thereby improving the capacitance stability and reliability of the resonant unit. At the same time, it reduces the capacitance heat loss and power attenuation under high-frequency operating conditions, thereby enhancing the efficiency and durability of the system.

[0056] Furthermore, as Figure 4 shown, the input control unit includes MOS transistor Q2, bipolar transistor Q5, resistor R16, and resistor R31. The first conducting end of MOS transistor Q2 is connected to the power input / output terminal of the power management module. The second conducting end of MOS transistor Q2 is connected to the power input terminal of the bridge drive chip. The first end of resistor R16 is connected to the power input / output terminal of the power management module. The second end of resistor R16 is connected to the first end of bipolar transistor Q5. The second end of bipolar transistor Q5 is grounded. The controlled end of bipolar transistor Q5 is connected to the first end of resistor R31. The second end of resistor R31 is connected to the first enable signal output terminal of the main control module.

[0057] In this embodiment, the input control unit is composed of MOS transistor Q2, triode Q5, resistor R16, and resistor R31. Through precise connection and logical design among various modules, the control of the power management and bridge drive chip is achieved. The first conduction end of MOS transistor Q2 is connected to the power input / output terminal of the power management module, used to receive the power signal from the power management module. Its second conduction end is connected to the power input terminal of the bridge drive chip, responsible for transmitting the power signal to the bridge drive chip to provide the necessary working voltage and current for it. The first end of resistor R16 is also connected to the power input / output terminal of the power management module. Its function is to divide the input voltage and then transmit it to the first end of triode Q5. Resistor R16 plays the role of current limiting and voltage dividing here, protecting triode Q5 from the impact of excessive current. The second end of triode Q5 is grounded, used to establish a circuit loop in the controlled state. Its controlled end is connected to the first end of resistor R31, used to receive the control signal transmitted from the first enable signal output terminal of the main control module. The role of resistor R31 here is to limit the current flowing into the controlled end of triode Q5 and adjust the signal level to meet the control requirements of triode Q5. When the main control module outputs an enable signal, the signal is adjusted by resistor R31 and then triggers triode Q5 to conduct, further controlling the working state of MOS transistor Q2 through resistor R16, thereby realizing the switching control of the power supply to the bridge drive chip. The entire control logic precisely adjusts the working state of the input control unit through the enable signal of the main control module, ensuring that the bridge drive chip can obtain stable power support when needed, while avoiding power waste in the non-working state, improving the energy efficiency and reliability of the system;

[0058] Specifically, the MOS transistor Q2 serves as the main switching element, which is used to control the power signal transmitted from the power management module to the bridge drive chip. When the controlled terminal (gate) of the MOS transistor Q2 receives an appropriate drive signal, its first conduction terminal (source) and the second conduction terminal (drain) are turned on, transmitting the power signal to the bridge drive chip to provide it with operating voltage and current. The switching action of the MOS transistor Q2 directly determines the power supply state of the bridge drive chip, and its function is to achieve efficient power control; the function of the triode Q5 is to control the switching state of the MOS transistor Q2. Its first terminal (collector) is connected to the power signal through the resistor R16, while the second terminal (emitter) is grounded. The controlled terminal (base) of the triode Q5 receives the enable signal from the main control module through the resistor R31. When the main control module outputs a high-level enable signal, the base current of the triode Q5 triggers its conduction, thereby transmitting the voltage signal on the resistor R16 to the gate of the MOS transistor Q2, turning on the MOS transistor Q2, and completing the power supply control of the bridge drive chip; the function of the resistor R16 is to limit the current and divide the voltage of the power signal, and at the same time provide the operating voltage for the triode Q5. When the triode Q5 is turned on, R16 limits the current flowing into the triode Q5, protecting Q5 from being impacted by excessive current. In addition, R16 preprocesses the gate signal of the MOS transistor Q2 to ensure that the signal strength is sufficient to turn on Q2 normally, improving the safety and stability of the circuit; the resistor R31 is connected between the enable signal output terminal of the main control module and the base of the triode Q5, playing the role of current limiting and level adjustment. It limits the current of the signal output by the main control module flowing into the base of the triode Q5, avoiding damaging Q5 due to excessive current, and at the same time adjusts the amplitude of the enable signal through its resistance value to make it adapt to the operating requirements of the triode Q5, ensuring the stability of the trigger control.

[0059] In summary, through the combined design of the MOS transistor, triode, and resistor in the input control unit, the effective control of the power input and the power supply of the bridge drive chip can be achieved, thereby ensuring the precise adjustment of the circuit current and voltage in different operating modes, avoiding problems such as circuit overload or undervoltage, and thus improving the safety and adaptability of the system.

[0060] Further, as Figure 4As shown in the figure, the input control unit includes MOS transistor Q4, MOS transistor Q6, resistor R17, resistor R21, and triode Q7. The first conduction end of MOS transistor Q6 is connected to the positive terminal of the battery, the second conduction end of MOS transistor Q6 is connected to the first conduction end of MOS transistor Q4, the second conduction end of MOS transistor Q4 is connected to the power input terminal of the bridge drive chip, the first conduction end of triode Q7 is connected to the controlled end of MOS transistor Q4, the first conduction end of triode Q7 is connected to the controlled end of MOS transistor Q6, the second conduction end of triode Q7 is grounded, the controlled end of triode Q7 is connected to the first end of resistor R17, the second end of resistor R17 is connected to the second enable signal output terminal of the main control module, the common node between the second conduction end of MOS transistor Q6 and the first conduction end of MOS transistor Q4 is connected to the first end of resistor R21, and the second end of resistor R21 is connected to the first conduction end of triode Q7.

[0061] In this embodiment, in the design of this input control unit, MOS transistor Q4, MOS transistor Q6, resistor R17, resistor R21, and triode Q7 jointly achieve the power control between the battery and the bridge drive chip through precise port connections and logical relationships. The first conduction end of MOS transistor Q6 is connected to the positive terminal of the battery to receive the power signal from the battery, and its second conduction end is connected to the first conduction end of MOS transistor Q4 to form a power transmission path. The second conduction end of MOS transistor Q4 is connected to the power input terminal of the bridge drive chip, which is responsible for transmitting the power signal to the bridge drive chip to provide stable voltage and current for its operation. The first conduction end of triode Q7 is respectively connected to the controlled ends of MOS transistor Q4 and MOS transistor Q6 to play a switching control role. The second conduction end of triode Q7 is grounded to form a loop of the control circuit. The controlled end of triode Q7 is connected to the first end of resistor R17 to receive the control signal transmitted by the main control module from the second enable signal output terminal. Resistor R17 limits the current flowing into the controlled end of triode Q7 to avoid damaging triode Q7 due to excessive current. The common node between the second conduction end of MOS transistor Q6 and the first conduction end of MOS transistor Q4 is connected to the first end of resistor R21. This node is an important hub for power signal transmission. The second end of resistor R21 is connected to the first conduction end of triode Q7 to play a role in voltage division and current limiting in the circuit. When the main control module outputs a high-level signal through the second enable signal output terminal, the signal is adjusted by resistor R17 and then triggers triode Q7 to conduct. The conduction state of triode Q7 simultaneously controls the controlled ends of MOS transistor Q4 and MOS transistor Q6, respectively making both conduct, thus forming a power transmission path from the battery to the bridge drive chip. Through the signal trigger of the main control module, the conduction states of the triode and MOS transistor are adjusted in sequence to ensure that the bridge drive chip obtains battery power only when needed, thereby improving the power consumption management ability and operation reliability of the system;

[0062] Specifically, the MOS transistor Q4 serves as the main switching element of the input control unit and is responsible for transferring the power signal from the MOS transistor Q6 to the bridge drive chip. When its controlled terminal (gate) receives the drive signal controlled by the triode Q7, the first conducting terminal (source) and the second conducting terminal (drain) of the MOS transistor Q4 conduct, thereby providing a stable power signal for the bridge drive chip. The switching state of Q4 directly determines the power supply situation of the bridge drive chip, and its main function is to achieve precise control of the battery power output; the MOS transistor Q6 is connected to the positive terminal of the battery and serves as the input switch of the power supply to control whether the battery power output is transferred to the MOS transistor Q4. The controlled terminal (gate) of Q6 is also controlled by the triode Q7 and works in cooperation with Q4 to form a complete power supply path. Its main function is to ensure that the battery power output is transferred to the bridge drive chip only when needed, preventing unnecessary power loss; the function of the resistor R17 is current limiting and signal regulation. Its first end is connected to the second enable signal output terminal of the main control module, and the second end is connected to the controlled terminal (base) of the triode Q7. When the main control module outputs a signal, R17 protects the triode from being impacted by excessive current by limiting the current flowing into the triode Q7. At the same time, it regulates the level of the enable signal to ensure that the triode Q7 can reliably enter the conducting state; the function of the resistor R21 is voltage division and current limiting. Its first end is connected to the common node between the second conducting terminal of the MOS transistor Q6 and the first conducting terminal of the MOS transistor Q4, and the second end is connected to the first conducting terminal (collector) of the triode Q7. It limits the current flowing through the triode Q7 to protect the working safety of the triode and the MOS transistor. In addition, R21 ensures the stability of the working signal of the triode Q7 through cooperation with other parts of the circuit.

[0063] In summary, the stable control of the battery power output can be achieved through the combined structure of the dual MOS transistors and the triode in the input control unit. At the same time, the efficient switching of the power management module and the bridge drive chip can be realized through the enable signal switching function of the triode, thereby ensuring the smooth transition between battery power supply and external power supply of the system, improving the continuity of power supply and the reliability of the system.

[0064] Preferably, two parts of the input control unit, one part is connected to the power management module and the other part is connected to the battery, are for realizing intelligent switching and efficient management under the condition of multi-power input. During the operation of the power bank, when an external power supply (such as powered through the power management module) exists, the system preferentially uses the external power supply to power the bridge drive chip and can charge the battery at the same time; when the external power supply is unavailable, the input control unit switches to battery power supply through the control module connected to the battery, so as to ensure that the bridge drive chip can continue to work and provide a stable power supply for the device to be charged. This dual-input control design not only improves the flexibility of the system, but also can optimize power consumption management, extend the usage time of the device, and at the same time avoid the conflict problem caused by the simultaneous power supply of the external power supply and the battery, improving the reliability and usage efficiency of the system.

[0065] Further, as Figure 6 shown, the power management module includes a power management chip U1, a TYPEC interface terminal, and an inductor L1. The power input and output port of the power management chip U1 is connected to the power input and output port of the TYPEC interface terminal. The signal output end of the TYPEC interface terminal is connected to the charge and discharge identification end of the power management chip U1. The battery power output end of the power management chip U1 is connected to the first end of the inductor L1, and the second end of the inductor L1 is connected to the positive terminal of the battery.

[0066] In this embodiment, each component forms a complete power management logic through clear port connections. The power input and output port of the power management chip U1 is connected to the power input and output port of the TYPEC interface terminal, which is used to receive the power supply signal from an external power supply (such as a charger) or supply power to an external device through the battery. The signal output end of the TYPEC interface terminal is connected to the charge and discharge identification end of the power management chip U1, undertaking the automatic identification function of the power input and output mode, dynamically switching to the charge or discharge mode according to the existence of the external power supply, so as to realize intelligent power management. The battery power output end of the power management chip U1 is connected to the first end of the inductor L1, and the second end of the inductor L1 is connected to the positive terminal of the battery, forming a power transmission path. The inductor L1 plays a role in energy storage and voltage regulation here, and can smooth the current fluctuation and suppress high-frequency noise during the charging process, ensuring that the battery receives a stable charging current and voltage. The design logic of the whole module combines the bidirectional signal transmission of the TYPEC interface terminal with the intelligent identification function of the power management chip U1, realizes the efficient switching between external power input, battery charging, and battery discharging, and at the same time optimizes the power quality during the charging process through the inductor L1, improving the reliability and efficiency of the system, and providing stable power support for the battery and the bridge drive chip.

[0067] In summary, through the cooperative design of the power management chip in the power management module and the TYPEC interface terminal, it is possible to achieve automatic recognition and charge-discharge management of external power supplies and batteries, and through the introduction of inductors, the current and voltage output of the battery can be adjusted, thereby improving the system's adaptability to different power supply conditions and ensuring an efficient and safe charging process.

[0068] Furthermore, as Figures 7 - 9 shown, the main control module includes a main control chip U3, a lamp indication unit, and a temperature sensing unit. The data communication terminal of the main control chip U3 is connected to the data communication terminal of the power management module to automatically wake up the power management module in the sleep state. Multiple indication signal output ports are provided on the main control chip U3, and each indication signal output port is respectively connected to the positive electrode of the corresponding light-emitting diode in the lamp indication unit. The negative electrode of the light-emitting diode is grounded. The temperature signal input terminal of the main control chip U3 is connected to the temperature signal output terminal of the temperature sensing unit.

[0069] In this embodiment, the main control module realizes the automatic control of power management, the indication of the operating state, and the real-time monitoring of temperature through the coordinated action of the main control chip U3, the lamp indication unit, and the temperature sensing unit. The data communication terminal of the main control chip U3 is connected to the data communication terminal of the power management module, and this connection relationship ensures that the main control chip can perform two-way data interaction with the power management module to realize the automatic control of the sleep and wake-up states of the power management module. When the main control chip detects the working requirements of the system, it can send a wake-up instruction to the power management module through data communication, causing it to switch from the sleep state to the working state, thereby providing necessary power support for other modules. The multiple indication signal output ports provided on the main control chip U3 are respectively connected to the positive electrodes of the light-emitting diodes in the lamp indication unit for outputting status indication signals, and the negative electrode of each light-emitting diode is grounded. By triggering the corresponding light-emitting diodes to emit light through different indication signal output ports, users can intuitively understand the current operating state or fault information of the system, improving the user experience and operation convenience. In addition, the temperature signal input terminal of the main control chip U3 is connected to the temperature signal output terminal of the temperature sensing unit, ensuring that the main control chip can receive the ambient temperature or device temperature information detected by the temperature sensing unit in real time. When an abnormal temperature is detected, the main control chip can adjust the system operating state according to the preset logic, such as reducing the workload, stopping charging, or triggering an alarm, thereby protecting the safety and stability of the device. The entire design, through the logical cooperation of data communication, signal output, and temperature monitoring, enables the main control module to play a key role in system control, operating state indication, and safety guarantee, providing an efficient, intelligent, and safe operating mechanism for the system.

[0070] In summary, through the collaborative work of the main control chip in the main control module and the lamp indication unit, the real-time feedback of the current working state of the device can be achieved. At the same time, the operating temperature of the device is monitored through the cooperation of the temperature sensing unit and the main control chip, so as to adjust the working state in time when the system is overheated or at low temperature, improving the operating safety of the device and the operability of users.

[0071] Further, as Figure 9 shown, the temperature sensing unit includes a resistor R15, a thermistor NTC1, and a capacitor C20. The first end of the resistor R15 is connected to the power supply, the second end of the resistor R15 is connected to the first end of the thermistor NTC1, the second end of the thermistor NTC1 is grounded, and a capacitor C20 is connected between the second end of the resistor R15 and the ground.

[0072] In this embodiment, the resistor R15, the thermistor NTC1, and the capacitor C20 are connected through ports to form a complete temperature detection circuit. The first end of the resistor R15 is connected to the power supply to provide a stable voltage signal for the entire temperature sensing unit. Its second end is connected to the first end of the thermistor NTC1, and at the same time, this node is connected in parallel with the capacitor C20 to the ground. The second end of the thermistor NTC1 is directly grounded to complete the current loop of the temperature detection circuit. The resistor R15 and the thermistor NTC1 are connected in series to form a voltage division circuit, where the resistance value of the thermistor NTC1 changes with the ambient temperature, thus affecting the voltage value of the voltage division point. The voltage at this voltage division point is used as the output signal of the temperature sensing unit to reflect the current ambient temperature or the surface temperature of the device. The capacitor C20 is connected in parallel between the second end of the resistor R15 and the ground, and its function is to filter out high-frequency noise in the temperature detection signal and smooth signal fluctuations, ensuring that the temperature signal transmitted to the main control module is more stable and accurate. Through this connection and logic design, the temperature sensing unit can sense the dynamic changes of temperature in real time and accurately transmit the temperature signal to the main control module for analysis and processing, thereby providing basic data support for the temperature protection mechanism of the device and avoiding misjudgment caused by signal interference, improving the reliability and safety of the system.

[0073] In summary, through the combined design of the resistor, thermistor, and capacitor in the temperature sensing unit, the temperature change of the device can be accurately detected, and the temperature signal is transmitted to the main control chip, so as to realize the real-time alarm or adjustment function for abnormal temperature states, avoid device damage or performance degradation caused by too high or too low temperature, and improve the stability and durability of the system.

[0074] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the above-mentioned division of each functional unit and module is used as an example. In actual applications, the above functions can be allocated to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above.

[0075] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A new Q-value wake-up circuit suitable for magnetic charging treasure, characterized in that: The novel Q-value wake-up circuit applicable to the magnetic power bank comprises a power management module, a main control module, a wireless charging module and a Q-value wake-up module, wherein the power management module is used to supply power to the wireless charging module, and the wireless power output end of the wireless charging module outputs power to power the device to be charged, the power signal input end of the Q-value wake-up module is connected to the wireless power output end of the wireless charging module, the wake-up signal output end of the Q-value wake-up module is connected to the wake-up signal input end of the main control module, and the wake-up signal output end of the main control module is connected to the wake-up signal input end of the power management module; When the device to be charged is placed in the charging area and the wireless charging module is powered off, the wireless charging module generates a corresponding power signal based on the electromagnetic coupling between the wireless charging module and the device to be charged. After the Q value wake-up module detects the power signal, it sends the corresponding wake-up signal to the power management module through the main control module to automatically wake up the power management module in a dormant state, thereby powering on the wireless charging module. The Q value wake-up module includes a resistor R29, a resistor R30, a capacitor C11 and a transistor Q3, the first end of the resistor R29 is connected to the power supply, the second end of the resistor R29 is connected to the first conduction end of the transistor Q3, the second conduction end of the transistor Q3 is grounded, the first end of the resistor R30 is connected to the wireless power output end of the wireless charging module, the second end of the resistor R30 is connected to the controlled end of the transistor Q3, and the capacitor C11 is connected between the second end of the resistor R29 and the ground.

2. According to claim 1, a novel Q-value wake-up circuit suitable for a magnetic power bank is characterized in that: The wireless charging module includes an input control unit, a bridge driving chip and a resonance unit. The power input end of the input control unit is connected to the power input and output ends of the power management module, the power output end of the input control unit is connected to the power input end of the bridge driving chip, and the power output end of the bridge driving chip is connected to the power input end of the resonance unit. The resonance unit is used to convert the input power into high-frequency alternating current and transmit energy to the device to be charged through the wireless charging coil in the resonance unit.

3. According to claim 2, a novel Q-value wake-up circuit suitable for a magnetic power bank is characterized in that: The resonant unit includes a resonant capacitor group, a resistor R46, a capacitor C43 and a wireless charging coil. The first PWM signal end of the bridge driving chip is connected to the LP1 end of the wireless charging coil, the second PWM signal end of the bridge driving chip is connected to the first conduction end of the resonant capacitor group, the second conduction end of the resonant capacitor group is connected to the LP2 end of the wireless charging coil, the common node between the first PWM signal end of the bridge driving chip and the LP1 end of the wireless charging coil is connected to the first end of the resistor R46, the second end of the resistor R46 is connected to the first end of the capacitor C43, and the common node between the second conduction end of the resonant capacitor group and the LP2 end of the wireless charging coil is connected to the second end of the capacitor C43 on the one hand, and to the power signal input end of the Q value wake-up module on the other hand.

4. A novel Q-value wake-up circuit suitable for a magnetic power bank according to claim 3, characterized in that: The resonant capacitor group includes a capacitor C53, a capacitor C55, a capacitor C56 and a capacitor C58, and the capacitor C53, the capacitor C55, the capacitor C56 and the capacitor C58 are arranged in parallel.

5. According to claim 2, a novel Q-value wake-up circuit suitable for a magnetic power bank is characterized in that: The input control unit includes a MOS tube Q2, a transistor Q5, a resistor R16 and a resistor R31. The first conduction end of the MOS tube Q2 is connected to the power input and output end of the power management module, the second conduction end of the MOS tube Q2 is connected to the power input end of the bridge driver chip, the first end of the resistor R16 is connected to the power input and output end of the power management module, the second end of the resistor R16 is connected to the first end of the transistor Q5, the second end of the transistor Q5 is grounded, the controlled end of the transistor Q5 is connected to the first end of the resistor R31, and the second end of the resistor R31 is connected to the first enable signal output end of the main control module.

6. A novel Q-value wake-up circuit suitable for a magnetic power bank according to claim 2, characterized in that: The input control unit includes a MOS transistor Q4, a MOS transistor Q6, a resistor R17, a resistor R21 and a triode Q7, wherein a first conducting end of the MOS transistor Q6 is connected to a positive terminal of a battery, a second conducting end of the MOS transistor Q6 is connected to a first conducting end of the MOS transistor Q4, a second conducting end of the MOS transistor Q4 is connected to a power input terminal of the bridge driving chip, a first conducting end of the triode Q7 is connected to a controlled end of the MOS transistor Q4, a first conducting end of the triode Q7 is connected to a controlled end of the MOS transistor Q6, a second conducting end of the triode Q7 is grounded, a controlled end of the triode Q7 is connected to a first end of the resistor R17, a second end of the resistor R17 is connected to a second enable signal output terminal of the main control module, a common node between the second conducting end of the MOS transistor Q6 and the first conducting end of the MOS transistor Q4 is connected to a first end of the resistor R21, and a second end of the resistor R21 is connected to a first conducting end of the triode Q7.

7. A novel Q-value wake-up circuit suitable for a magnetic power bank according to claim 1, characterized in that: The power management module includes a power management chip U1, a TYPEC interface terminal and an inductor L1. The power input and output ports of the power management chip U1 are connected to the power input and output ports of the TYPEC interface terminal, the signal output end of the TYPEC interface terminal is connected to the charge and discharge identification end of the power management chip U1, the battery power output end of the power management chip U1 is connected to the first end of the inductor L1, and the second end of the inductor L1 is connected to the positive end of the battery.

8. According to claim 1, a novel Q-value wake-up circuit suitable for a magnetic power bank is characterized in that: The main control module includes a main control chip U3, a light indication unit and a temperature sensing unit. The data communication end of the main control chip U3 is connected to the data communication end of the power management module to automatically wake up the power management module in a dormant state. The main control chip U3 is provided with a plurality of indication signal output ports, each of which is respectively connected to the positive end of the light emitting diode corresponding to the light indication unit, and the negative end of the light emitting diode is grounded. The temperature signal input end of the main control chip U3 is connected to the temperature signal output end of the temperature sensing unit.

9. A novel Q-value wake-up circuit suitable for a magnetic power bank according to claim 8, characterized in that: The temperature sensing unit includes a resistor R15, a thermistor NTC1 and a capacitor C20, wherein a first end of the resistor R15 is connected to a power supply, a second end of the resistor R15 is connected to a first end of the thermistor NTC1, a second end of the thermistor NTC1 is grounded, and the capacitor C20 is connected between the second end of the resistor R15 and the ground.

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