Electronic atomization device

Abstract

The application relates to an electronic atomization device, which comprises an integrated microphone circuit and a microphone power amplifier circuit, the integrated microphone circuit is connected with the microphone power amplifier circuit, the microphone power amplifier circuit is used for connecting a load, and the integrated microphone circuit is used for constant-voltage output power supply to the load through the microphone power amplifier circuit. The microphone power amplifier circuit is added at the output side of the integrated microphone circuit, power amplification is carried out through the microphone power amplifier circuit, and constant-voltage output power supply is carried out to the load, the output power is improved, meanwhile, the improvement of the suction taste and the atomization amount is maintained, the output voltage is not attenuated due to the load increase, and the use convenience of the electronic atomization device is improved.

Description

Technical Field

[0001] This application relates to the field of atomization equipment technology, and in particular to an electronic atomization device. Background Technology

[0002] With the development of electronic atomization devices, the number of users is increasing, leading to a rise in their use in various settings. Traditional electronic atomization devices primarily employ integrated microphone control circuits, resulting in a compact size. However, they cannot meet the high power demands of atmospheric atomization, thus failing to satisfy the need for higher-powered flavors. Traditional electronic atomization devices also suffer from low ease of use. Summary of the Invention

[0003] Therefore, it is necessary to provide an electronic atomization device that is highly convenient to use to address the above-mentioned problems.

[0004] An electronic atomizing device includes an integrated microphone circuit and a microphone power amplifier circuit. The integrated microphone circuit is connected to the microphone power amplifier circuit, and the microphone power amplifier circuit is used to connect to a load. The integrated microphone circuit is used to provide constant voltage output power to the load through the microphone power amplifier circuit.

[0005] In one embodiment, the electronic atomizing device further includes a detection feedback circuit connected to the integrated microphone circuit and the load, used to detect the state of the load and feed back a state detection signal to the integrated microphone circuit; when the integrated microphone circuit determines that the resistance of the load has decreased based on the state detection signal, it performs constant voltage output through the microphone power amplifier circuit.

[0006] In one embodiment, the integrated microphone circuit is further configured to stop supplying power to the load when the load is determined to be short-circuited or open-circuited based on the status detection signal.

[0007] In one embodiment, the detection feedback circuit includes a negative feedback diode, the cathode of which is connected to the load, and the anode of which is connected to the integrated microphone circuit.

[0008] In one embodiment, the microphone power amplifier circuit is an in-phase power amplifier circuit.

[0009] In one embodiment, the in-phase power amplifier circuit includes a drive control switch, a power amplifier control switch, a first bias resistor, and a second bias resistor. The control terminal of the drive control switch is connected to the integrated microphone circuit. The first terminal of the drive control switch is connected to the control terminal of the power amplifier control switch. The control terminal of the drive control switch is connected to the second terminal of the drive control switch through the first bias resistor, and the second terminal of the drive control switch is grounded. The control terminal of the power amplifier control switch is connected to the first terminal of the power amplifier control switch through the second bias resistor. The first terminal of the power amplifier control switch is connected to the power supply terminal, and the second terminal of the power amplifier control switch is connected to the load.

[0010] In one embodiment, the drive control switch is a MOSFET, a transistor, a switching transistor, or an optocoupler.

[0011] In one embodiment, the power amplification control switch is a MOSFET, a transistor, a switching transistor, or a thyristor.

[0012] In one embodiment, the microphone power amplifier circuit is an ASC integrated chip power amplifier circuit.

[0013] In one embodiment, the electronic atomizing device further includes a power module connected to the integrated microphone circuit and the microphone power amplifier circuit.

[0014] In one embodiment, the electronic atomizing device further includes a synchronous charging module connected to the integrated microphone circuit and the power module; the integrated microphone circuit is also used to simultaneously activate the internal charging circuit and the synchronous charging module when a charging signal is received, so as to quickly charge the power module.

[0015] The aforementioned electronic atomizing device adds a microphone power amplifier circuit to the output side of the integrated microphone circuit. The microphone power amplifier circuit amplifies the power and provides constant voltage output power to the load, thereby improving the output power while maintaining the improved inhalation taste and atomization volume. The output voltage will not decrease due to increased load, thus improving the ease of use of the electronic atomizing device. Attached Figure Description

[0016] Figure 1 This is a structural block diagram of an electronic atomizing device in one embodiment;

[0017] Figure 2 This is a schematic diagram of the electronic atomizing device in one embodiment;

[0018] Figure 3 This is a schematic diagram of an embodiment that integrates a microphone circuit, a microphone power amplifier circuit, and a detection feedback circuit;

[0019] Figure 4 This is a schematic diagram of the electronic atomizing device in another embodiment;

[0020] Figure 5 This is a schematic diagram of another embodiment integrating a microphone circuit, a microphone power amplifier circuit, and a detection feedback circuit;

[0021] Figure 6 This is a schematic diagram of a synchronous charging module in one embodiment;

[0022] Figure 7 This is a comparison chart of the output voltage / resistance curves of the electronic atomizing device of this application and a conventional integrated microphone in one embodiment. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0024] In one embodiment, such as Figure 1 As shown, an electronic atomizing device is provided, including an integrated microphone circuit 110 and a microphone power amplifier circuit 120. The integrated microphone circuit 110 is connected to the microphone power amplifier circuit 120, and the microphone power amplifier circuit 120 is used to connect to a load 200. The integrated microphone circuit 110 is used to provide constant voltage output power to the load 200 through the microphone power amplifier circuit 120. Specifically, the load 200 can be the atomizer of the electronic atomizing device.

[0025] Specifically, the integrated microphone circuit 110 can employ an integrated microphone or an ASC (Application Specific Integrated Circuit) chip. Taking the integrated microphone circuit 110 using an integrated microphone as an example, when the user uses the electronic atomizing device for vaping, the integrated microphone in the integrated microphone circuit 110 detects the suction negative pressure and activates its internal low-power PWM (Pulse Width Modulation) circuit, outputting a low-power PWM signal to supply low-power power to the load 200. When there is a demand for atomization with a large amount of atmospheric atomization and high power output, the microphone power amplifier circuit 120 serves as the main power output unit. At this time, the integrated microphone activates after detecting the suction negative pressure, outputting a PWM signal to control the microphone power amplifier circuit 120. The microphone power amplifier circuit 120 outputs a high-power PWM current to the load 200 based on the PWM signal, achieving constant voltage output through the microphone power amplifier circuit 120, thereby compensating for the flavor and maintaining the improved vaping flavor and atomization volume without causing a decrease in output voltage due to increased load.

[0026] It's understandable that the integrated microphone circuit 110 can detect the presence of atmospheric aerosol and the need for high-power atomization output in various ways. Specifically, the integrated microphone circuit 110 could detect the state of the load 200 and analyze whether the conditions for atmospheric aerosol and high-power atomization output are met based on the load 200's state. Alternatively, the integrated microphone circuit 110 could analyze whether the conditions for atmospheric aerosol and high-power atomization output are met based on the control commands input by the user through the buttons on the electronic atomization device. After determining that the conditions for atmospheric aerosol and high-power atomization output are met, the integrated microphone circuit 110 outputs a PWM signal to control the microphone power amplifier circuit 120 to provide high-power constant voltage power to the load 200, maintaining the improved vaping experience and aerosol volume without causing a decrease in output voltage due to increased load. When the power requirements of the atomizer are increased, the output power of the microphone power amplifier circuit 120 can be increased to fully meet the power requirements of the atomizer, so as to ensure the improvement of the atomized taste and aerosol volume, without the failure to produce atomization or insufficient output power due to power mismatch, which would affect the taste and atomization volume.

[0027] In one embodiment, such as Figure 2 As shown, the electronic atomizing device also includes a detection feedback circuit 130, which is connected to the integrated microphone circuit 110 and the load 200. The detection feedback circuit 130 is used to detect the state of the load 200 and feed back the state detection signal to the integrated microphone circuit 110. When the integrated microphone circuit 110 determines that the resistance of the load has decreased according to the state detection signal, it performs constant voltage output through the microphone power amplifier circuit 120.

[0028] Specifically, the detection feedback circuit 130 can employ a negative feedback diode to monitor the short-circuit or open-circuit status of the atomizer in real time and feed back a status detection signal to the integrated microphone. When the integrated microphone detects a decrease in the resistance of the atomizer, it provides a constant voltage output through the microphone power amplifier circuit 120 to maintain improved vaping flavor and atomization volume. Alternatively, the integrated microphone can immediately activate the microphone power amplifier circuit 120 to provide a high-power constant voltage supply to the atomizer upon detecting a decrease in the atomizer's resistance; or it can activate the microphone power amplifier circuit 120 to provide a high-power constant voltage supply to the atomizer after detecting a decrease in the atomizer's resistance to a set threshold.

[0029] Furthermore, in one embodiment, the integrated microphone circuit 110 is also used to stop supplying power to the load 200 when a short circuit or open circuit is detected in the load 200 based on a status detection signal. Specifically, when the atomizer is not short-circuited or open-circuited, the resistance of the atomizer can be assumed to vary within the normal resistance range. The integrated microphone can analyze whether the detected resistance is too small or too large based on the received status detection signal and a pre-set comparison threshold (e.g., a threshold far exceeding the upper and lower limits of the normal resistance range), and thus analyze whether the atomizer is short-circuited or open-circuited. When it is determined that the atomizer is short-circuited or open-circuited, the integrated microphone stops outputting the PWM signal, causing the microphone power amplifier circuit 120 to stop working, thereby ensuring the safety of the circuit.

[0030] The above-mentioned electronic atomizing device adds a microphone power amplifier circuit 120 to the output side of the integrated microphone circuit 110. The microphone power amplifier circuit 120 amplifies the power and provides constant voltage output power to the load 200, which improves the output power while maintaining the improvement of the inhalation taste and atomization volume. The output voltage will not decrease due to the increased load, thus improving the ease of use of the electronic atomizing device.

[0031] In one embodiment, the integrated microphone circuit 110 includes an integrated microphone. For example... Figure 2 As shown, the integrated microphone circuit 110, when using an integrated microphone, includes functions such as low-current charging management, LED (Light Emitting Diode) status display, negative voltage detection sensor, PWM low-power output, load short-circuit detection, and load open-circuit detection. Further, in one embodiment, the microphone power amplifier circuit 120 is a non-inverting power amplifier circuit. The input resistance value of the non-inverting power amplifier circuit does not affect its input impedance, thus allowing for more precise adjustment. Specifically, as... Figure 3As shown, the in-phase power amplifier circuit includes a drive control switch Q1, a power amplifier control switch Q2, a first bias resistor R2, and a second bias resistor R4. The control terminal of the drive control switch Q1 is connected to the integrated microphone circuit 110. The first terminal of the drive control switch Q1 is connected to the control terminal of the power amplifier control switch Q2. The control terminal of the drive control switch Q1 is connected to the second terminal of the drive control switch Q1 through the first bias resistor R2, and the second terminal of the drive control switch Q1 is grounded. The control terminal of the power amplifier control switch Q2 is connected to the first terminal of the power amplifier control switch Q2 through the second bias resistor R4. The first terminal of the power amplifier control switch Q2 is connected to the power supply terminal B+, and the second terminal of the power amplifier control switch Q2 is connected to the load 200. The drive control switch Q1 can be a MOSFET, a transistor, a switching transistor, or an optocoupler. The power amplifier control switch Q2 can be a MOSFET, a transistor, a switching transistor, or a thyristor. In this embodiment, the drive control switch Q1 is an N-channel MOSFET, with the gate as the control terminal, the drain as the first terminal, and the source as the second terminal. The power amplifier control switch Q2 uses a P-channel MOSFET, with the gate as the control terminal, the source as the first terminal, and the drain as the second terminal.

[0032] Specifically, the integrated microphone circuit 110 includes an integrated microphone MIC1. The in-phase power amplifier circuit may also include a current-limiting resistor R1. The control terminal of the drive control switch Q1 is connected to pin 4 of the integrated microphone MIC1 through the current-limiting resistor R1. Pin 1 of the integrated microphone MIC1 is connected to the power supply terminal B+, and pin 3 of the integrated microphone MIC1 is grounded. The load 200 is connected between terminals H+ and H-. The second terminal of the power amplifier control switch Q2 is connected to the load 200 through terminal H+, and terminal H- is grounded. The drive control switch Q1 is in the off state when there is no PWM signal, and starts conducting when there is a PWM signal, activating the power amplifier control switch Q2. The power amplifier control switch Q2 is in the off state when there is no drive PWM signal, and starts conducting when there is a drive PWM signal, outputting a high-power PWM current to the atomizer to start atomization.

[0033] In one embodiment, the detection feedback circuit 130 includes a negative feedback diode D1. The cathode of the negative feedback diode D1 is connected to the load 200, and the anode of the negative feedback diode D1 is connected to the integrated microphone circuit 110. Specifically, the cathode of the negative feedback diode D1 is connected to the load 200 via terminal H+, and the anode of the negative feedback diode D1 is connected to pin 4 of the integrated microphone MIC1. When a short circuit or open circuit occurs in the load 200, the negative feedback diode D1 feeds a negative signal back to the integrated microphone MIC1. After the integrated microphone MIC1 determines whether a short circuit or open circuit has occurred, it shuts off the PWM signal output at pin 4 to ensure circuit safety.

[0034] In one embodiment, the integrated microphone circuit 110 includes an ASCII integrated chip. For example... Figure 4 As shown, the electronic atomizing device also includes a button connected to the integrated microphone circuit 110. When the integrated microphone circuit 110 uses an ASCII integrated chip, its functions include low-current charging management, LED status display, button ignition detection, PWM low-power output, load short-circuit detection, and load open-circuit detection. Further, in one embodiment, the microphone power amplifier circuit 120 is an ASCII integrated chip power amplifier circuit. Wherein, as... Figure 5 As shown, the ASC integrated chip power amplifier circuit includes a drive control switch Q1, a power amplifier control switch Q2, a first bias resistor R2, and a second bias resistor R4. The control terminal of the drive control switch Q1 is connected to the integrated microphone circuit 110. The first terminal of the drive control switch Q1 is connected to the control terminal of the power amplifier control switch Q2. The control terminal of the drive control switch Q1 is connected to the second terminal of the drive control switch Q1 through the first bias resistor R2, and the second terminal of the drive control switch Q1 is grounded. The control terminal of the power amplifier control switch Q2 is connected to the first terminal of the power amplifier control switch Q2 through the second bias resistor R4. The first terminal of the power amplifier control switch Q2 is connected to the power supply terminal B+, and the second terminal of the power amplifier control switch Q2 is connected to the load 200. The drive control switch Q1 can be a MOSFET, a transistor, a switching transistor, or an optocoupler. The power amplifier control switch Q2 can be a MOSFET, a transistor, a switching transistor, or a thyristor. In this embodiment, the drive control switch Q1 is an N-channel MOSFET, with the gate as the control terminal, the drain as the first terminal, and the source as the second terminal. The power amplifier control switch Q2 uses a P-channel MOSFET, with the gate as the control terminal, the source as the first terminal, and the drain as the second terminal.

[0035] Specifically, the integrated microphone circuit 110 includes an ASCII integrated chip U1. The ASCII integrated chip power amplifier circuit also includes a current-limiting resistor R1. The control terminal of the drive control switch Q1 is connected to pin 4 of the ASCII integrated chip U1 through the current-limiting resistor R1. Pin 1 of the ASCII integrated chip U1 is connected to the power supply terminal B+. Pin 3 of the ASCII integrated chip U1 is grounded. Pin 5 of the ASCII integrated chip U1 is connected to one end of the button K1, and the other end of the button K1 is grounded. The load 200 is connected between terminals H+ and H-. The second terminal of the power amplifier control switch Q2 is connected to the load 200 through terminal H+, and terminal H- is grounded. The drive control switch Q1 is in the off state when there is no PWM signal, and starts conducting when there is a PWM signal, activating the power amplifier control switch Q2. The power amplifier control switch Q2 is in the off state when there is no drive PWM signal, and starts conducting when there is a drive PWM signal, outputting a high-power PWM current to the atomizer to start atomization.

[0036] In one embodiment, the detection feedback circuit 130 also includes a negative feedback diode D1. The cathode of the negative feedback diode D1 is connected to the load 200, specifically through the terminal H+. The anode of the negative feedback diode D1 is connected to pin 4 of the ASC integrated chip U1. Furthermore, the electronic atomizing device also includes a resistor R6. The anode of the negative feedback diode D1 is connected to pin 4 of the ASC integrated chip U1 through resistor R6. When a short circuit or open circuit occurs in the load 200, the negative feedback diode D1 feeds a negative signal back to the ASC integrated chip U1. After determining whether a short circuit or open circuit has occurred, the ASC integrated chip U1 shuts down the PWM signal output at pin 4 to ensure circuit safety.

[0037] In one embodiment, such as Figure 2 and Figure 4 As shown, the electronic atomizing device also includes a power module 140, which is connected to the integrated microphone circuit 110 and the microphone power amplifier circuit 120. Specifically, the power module 140 can be an energy storage element such as a battery, used to store electrical energy and supply power to the integrated microphone circuit 110 and the microphone power amplifier circuit 120. Specifically, the power module 140 is connected to power terminals B+ and B-, with power terminal B- grounded. The power module 140 provides power to the integrated microphone circuit 110 and the microphone power amplifier circuit 120 through power terminal B+.

[0038] In one embodiment, the electronic atomizing device further includes a synchronous charging module 150, which is connected to the integrated microphone circuit 110 and the power module 140. The integrated microphone circuit 110 is also used to simultaneously activate its internal charging circuit and the synchronous charging module 150 upon receiving a charging signal, thereby rapidly charging the power module 140. For example... Figure 6 As shown, the synchronous charging module 150 includes a chip U2, a resistor R5, and capacitors C4 and C5. Pin 4 of chip U2 is connected to the integrated microphone circuit 110 and the USB_IN interface. Pins 1, 2, and 5 of chip U2 are grounded. Pin 3 of chip U2 is connected to the power supply terminal B+, and pin 6 of chip U2 is grounded through resistor R5. One end of capacitor C4 is connected to pin 4 of chip U2, and the other end is grounded. One end of capacitor C5 is connected to pin 3 of chip U2, and the other end is grounded. Pin 4 of chip U2 is connected to pin 2 of the integrated microphone MIC1, or pin 4 of chip U2 is connected to pin 2 of the ASCII integrated chip U1.

[0039] Specifically, when the electronic atomizing device is low on power, the user can connect the USB (Universal Serial Bus) interface of the electronic atomizing device to external devices such as computers. After the integrated microphone MIC1 or the ASCII integrated chip U1 detects a charging signal connected to the USB interface, it simultaneously activates the internal charging circuit and the external synchronous charging module 150 to increase the charging current, thereby ensuring fast charging when the power module 140 uses a large-capacity battery cell and achieving the purpose of high-current charging.

[0040] To facilitate a better understanding of the above-described electronic atomizing device, a detailed explanation is provided below with reference to specific embodiments.

[0041] Currently, electronic atomizing devices mainly employ two circuit control methods: integrated microphones and discrete MCU (Micro Control Unit) components. Integrated microphones are compact, have simple circuitry, and are inexpensive. However, due to their low output power and narrow load resistance compatibility range, they cannot meet the high power demands of atmospheric atomization, thus failing to satisfy higher-power flavor requirements. Discrete MCU components address this issue, offering sufficiently high output power and a wide load resistance compatibility range, effectively meeting the flavor demands of both atmospheric atomization and high power. However, they are significantly more expensive than integrated microphones, and their circuitry is much more complex and occupies a larger area. In summary, the current shortcomings of electronic atomizing devices include:

[0042] 1. The output power of the integrated microphone changes significantly as the load resistance decreases, resulting in a large difference in the inhalation sensation.

[0043] 2. The maximum output power of the integrated microphone is limited and cannot meet the needs of higher power requirements.

[0044] 3. The integrated charging current of the microphone is too small to meet the charging needs of large-capacity battery cells.

[0045] 4. MCU discrete component circuits have higher costs and larger size.

[0046] Therefore, it is meaningful to find a control method that has minimal impact on the atomized taste, lower cost, smaller size, and higher charging current for application in electronic atomization devices. This application addresses the aforementioned electronic shortcomings while significantly improving the user experience and taste, based on low cost, small size, high output power, and high charging current.

[0047] Specifically, such as Figure 2As shown, the electronic atomizing device includes: an integrated microphone circuit 110, a microphone power amplifier circuit 120, and a detection feedback circuit 130. The microphone power amplifier circuit 120 includes a power amplification MOSFET, a driving MOSFET, and a bias resistor, used for power amplification output. The detection feedback circuit 130 consists of negative feedback diodes, used for real-time monitoring of the atomizer's short-circuit or open-circuit status. The integrated microphone circuit 110 is used for real-time detection of the inhalation negative pressure, outputting a PWM signal, processing short-circuit or open-circuit signals, and low-current charging.

[0048] The detection feedback circuit 130 detects a decrease in the resistance of the loaded atomizer. When the load increases, the microphone power amplifier circuit 120 provides a constant voltage output to compensate for the reduced flavor and maintain the improved vaping experience and atomization volume without causing a voltage drop due to increased load. In applications where the atomizer's power requirements increase, the power amplifier circuit 120 boosts the output power to adequately meet the atomizer's power needs, ensuring improved vaping experience and atomization volume without power mismatch leading to insufficient atomization or affecting flavor and atomization volume.

[0049] The microphone power amplifier circuit 120 uses fewer components, has a simpler circuit, and is lower in cost. It only requires one power MOSFET, one driver MOSFET, and two bias resistors to achieve high power output. The microphone power amplifier circuit 120 maintains improved performance while occupying a smaller circuit size. Furthermore, the microphone power amplifier circuit 120 uses a non-inverting amplifier circuit. The input resistor value of the non-inverting amplifier does not affect the input impedance, thus allowing for more accurate adjustment.

[0050] Furthermore, the electronic atomizing device also includes a synchronous charging module 150, which is used to amplify the charging current to ensure fast charging of large-capacity batteries and improve the user experience. Examples of the two solutions are provided below.

[0051] Option 1: Integrated microphone module power amplification solution:

[0052] like Figure 2 As shown, the voltage of the power module 140 is simultaneously applied to the integrated microphone circuit 110 and the microphone power amplifier circuit 120, providing power to each module circuit.

[0053] The integrated microphone circuit 110 employs an integrated microphone, whose functions include low-current charging management, LED display, negative pressure detection sensor, low-power PWM output, load short-circuit detection, and load open-circuit detection. The integrated microphone itself is a complete electronic atomization control module with low charging current and low output power. When atomization is needed, the negative pressure detection sensor detects a negative suction pressure and activates the internal low-power PWM circuit, outputting a low-power PWM signal. When a charging signal is detected, the internal low-current charging management current is automatically activated to charge the battery cell with a low current.

[0054] In electronic atomization applications requiring high atmospheric atomization volume and high power output, the microphone power amplifier circuit 120 serves as the primary power output unit. Its operating principle is as follows: When atomization is needed, the suction negative pressure activates the integrated microphone. The integrated microphone outputs a PWM signal, activating the drive control switch of the in-phase power amplifier circuit. The drive control switch is off when there is no PWM signal and begins to conduct when there is a PWM signal, activating the power amplifier control switch. The power amplifier control switch is off when there is no drive PWM signal and begins to conduct when there is a drive PWM signal, outputting a high-power PWM current to the atomizer, initiating atomization. When a charging signal is detected, the integrated microphone's charging circuit and the external synchronous charging module 150 are simultaneously activated to achieve high-current charging.

[0055] The implementation method of the microphone power amplifier circuit of the electronic atomizing device is as follows: Figure 3 As shown, MIC1 is an integrated microphone. Its negative pressure detection sensor detects the negative pressure from the suction and activates its internal low-power PWM circuit, outputting a PWM signal from pin 4. After being current-limited by resistor R1, the PWM signal reaches the gate (G) of the driving MOSFET Q1, turning it on. R2 is a pull-down bias resistor to ensure that the driving MOSFET Q1 is off when there is no PWM signal. After the driving MOSFET Q1 is on, it drives the gate (G) of the power amplifier MOSFET Q2, which then outputs the amplified PWM current through port H+ to the atomizer load, generating high-power atomization. R4 is a pull-up bias resistor for the power amplifier MOSFET Q2 to ensure that it is off when there is no PWM drive signal. D1 is a negative feedback diode under load short-circuit / open-circuit conditions. When the load atomizer experiences a short circuit or open circuit, the negative feedback diode D1 feeds the signal negatively back to the integrated microphone MIC1. After determining whether it is a short circuit or open circuit, the integrated microphone MIC1 shuts down the PWM signal output at pin 4 to ensure circuit safety. The driver MOSFET Q1 can be replaced by a transistor, a switching transistor, or an optocoupler, and the power amplifier MOSFET Q2 can be replaced by a transistor, a switching transistor, or a thyristor.

[0056] Option 2: ASC integrated chip microphone power amplification solution:

[0057] like Figure 4 As shown, the voltage of the power module 140 is simultaneously applied to the integrated microphone circuit 110 and the microphone power amplifier circuit 120, providing power to each module circuit.

[0058] The integrated microphone circuit 110 uses an ASCII integrated chip, whose functions include low-current charging management, LED display, button ignition detection, low-power PWM output, load short-circuit detection, and load open-circuit detection. The ASCII integrated chip itself is a complete electronic atomization control module with low charging current and low output power. When atomization is needed, the button ignition input port detects a change in button voltage and activates the internal low-power PWM circuit, outputting a low-power PWM signal. When a charging signal is detected, the internal low-current charging management current is automatically activated to charge the battery cell with a low current.

[0059] In electronic atomization applications requiring high atmospheric atomization volume and high power output, the microphone power amplifier circuit 120 serves as the primary power output unit. Its operating principle is as follows: When atomization is needed, the button detection port detects a voltage change and activates the ASC integrated chip. The ASC integrated chip outputs a PWM signal, activating the drive control switch of the ASC integrated chip power amplifier circuit. The drive control switch is off when there is no PWM signal and conducts when there is a PWM signal, activating the power amplifier control switch. The power amplifier control switch is off when there is no drive PWM signal and conducts when there is a drive PWM signal, outputting a high-power PWM current to the atomizer, initiating atomization. When a charging signal is detected, the charging circuit of the ASC integrated chip and the external synchronous charging module 150 are simultaneously activated to achieve high-current charging.

[0060] The implementation method of the ASC integrated chip power amplifier circuit in the electronic atomizing device is as follows: Figure 5As shown, U1 is an ASCII integrated chip. After detecting a voltage change at button K1, its button ignition start port activates its internal low-power PWM circuit, outputting a PWM signal from pin 4. The PWM signal, after being limited by current-limiting resistor R1, reaches the gate (G) of the driving MOSFET Q1, turning it on. R2 is a pull-down bias resistor to ensure that the driving MOSFET Q1 is off when there is no PWM signal. After the driving MOSFET Q1 is on, it drives the gate (G) of the power amplifier MOSFET Q2, which then outputs the amplified PWM current through port H+ to the atomizer load, generating high-power atomization. R4 is a pull-up bias resistor for the power amplifier MOSFET Q2 to ensure that it is off when there is no PWM drive signal. D1 is the negative feedback diode under load short-circuit / open-circuit conditions, and R6 is the current-limiting resistor of the feedback loop. When the load atomizer experiences a short circuit or open circuit, the negative feedback diode D1 feeds the signal negatively back to the ASC integrated chip. After the ASC integrated chip determines whether it is short-circuit or open-circuit, it shuts down the PWM output at pin 4 to ensure circuit safety. The driver MOSFET Q1 can be replaced by a transistor, a switching transistor, or an optocoupler, and the power amplifier MOSFET Q2 can be replaced by a transistor, a switching transistor, or a thyristor.

[0061] Through the implementation method of the microphone power amplifier circuit of the electronic atomizing device described above, the following is obtained: Figure 7 The graph shows the comparison between load resistance and output voltage. Curve A represents the output curve of a traditional integrated microphone when the battery is fully charged, while curve B represents the output curve of the microphone power amplifier circuit of this application when the battery is fully charged. As the resistance of the load atomizer gradually decreases, the microphone power amplifier circuit provided in this application can effectively ensure a constant output voltage. Compared with the output method of using an integrated microphone alone, there is no output voltage attenuation, thus ensuring stable output power.

[0062] The electronic atomizing device provided in this application can solve the following problems:

[0063] 1. By amplifying the output power, the taste and flavor are improved, and the amount of atomized aerosol is increased; the consistency of taste is maintained, even if the load resistance is reduced, the taste is not affected; the consistency of aerosol quantity is maintained, even if the load power demand is increased, the aerosol quantity is not affected.

[0064] 2. Using a microphone power amplifier circuit reduces the requirements for components and the number of components required, thereby saving costs and reducing the material costs of the design.

[0065] 3. By using fewer components, the PCB (Printed Circuit Board) design area is much smaller than that of discrete MCU components after the power is increased, and the overall size is also smaller, which is conducive to the miniaturization design of high-power electronic atomization devices.

[0066] 4. By improving the taste, maintaining the consistency of the taste, reducing the size, and increasing the charging current, the user experience of high-power electronic atomization devices can be greatly improved.

[0067] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0068] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An electronic atomizing device, characterized in that, It includes an integrated microphone circuit and a microphone power amplifier circuit. The integrated microphone circuit is connected to the microphone power amplifier circuit, which is used to connect to a load. The integrated microphone circuit is used to provide constant voltage output power to the load through the microphone power amplifier circuit according to the state of the load or according to the input control command. The electronic atomizing device further includes a detection feedback circuit, which is connected to the integrated microphone circuit and the load. The detection feedback circuit is used to detect the state of the load and feed back a state detection signal to the integrated microphone circuit. When the integrated microphone circuit determines that the resistance of the load has decreased based on the state detection signal, it outputs a constant voltage through the microphone power amplifier circuit.

2. The electronic atomizing device according to claim 1, characterized in that, The integrated microphone circuit is also used to stop supplying power to the load when the load is determined to have a short circuit or open circuit based on the status detection signal.

3. The electronic atomizing device according to claim 1, characterized in that, The detection feedback circuit includes a negative feedback diode, the cathode of which is connected to the load, and the anode of which is connected to the integrated microphone circuit.

4. The electronic atomizing device according to claim 1, characterized in that, The microphone power amplifier circuit is a non-inverting power amplifier circuit.

5. The electronic atomizing device according to claim 4, characterized in that, The in-phase power amplifier circuit includes a drive control switch, a power amplifier control switch, a first bias resistor, and a second bias resistor. The control terminal of the drive control switch is connected to the integrated microphone circuit. The first terminal of the drive control switch is connected to the control terminal of the power amplifier control switch. The control terminal of the drive control switch is connected to the second terminal of the drive control switch through the first bias resistor. The second terminal of the drive control switch is grounded. The control terminal of the power amplifier control switch is connected to the first terminal of the power amplifier control switch through the second bias resistor. The first terminal of the power amplifier control switch is connected to the power supply terminal. The second terminal of the power amplifier control switch is connected to the load.

6. The electronic atomizing device according to claim 5, characterized in that, The drive control switch is a switching transistor.

7. The electronic atomizing device according to claim 5, characterized in that, The drive control switch is a MOSFET, a transistor, or an optocoupler.

8. The electronic atomizing device according to claim 5, characterized in that, The power amplifier control switch is a switching transistor.

9. The electronic atomizing device according to claim 5, characterized in that, The power amplifier control switch is a MOSFET, a transistor, or a thyristor.

10. The electronic atomizing device according to claim 1, characterized in that, The microphone power amplifier circuit is an ASC integrated chip power amplifier circuit.

11. The electronic atomizing device according to any one of claims 1-10, characterized in that, It also includes a power module, which is connected to the integrated microphone circuit and the microphone power amplifier circuit.

12. The electronic atomizing device according to claim 11, characterized in that, It also includes a synchronous charging module, which is connected to the integrated microphone circuit and the power module; the integrated microphone circuit is also used to simultaneously activate the internal charging circuit and the synchronous charging module when a charging signal is received, so as to quickly charge the power module.

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