Atomization driving circuit, atomization device, and state monitoring method therefor

Abstract

An atomization driving circuit (200), an atomization device, and a state monitoring method therefor. The atomization driving circuit (200) comprises a charging interface (10), a battery module (30), a charging circuit (20), a state monitoring circuit (40), and a controller (50). A state feedback terminal of the charging circuit (20) presents different output states when the charging interface (10) is in different connection states with an external charging module and presents different output states when a battery is fully charged or not fully charged. The state monitoring circuit (40) correspondingly outputs voltage signals of different magnitudes. On the basis of a magnitude change of a received voltage signal, the controller (50) determines a connection state between the charging interface (10) and the external charging module and determines a charging state of the battery module (30). By providing the state monitoring circuit (40) and connecting same to the state feedback terminal of the charging circuit (20) to implement state detection, the occupation of port resources of the controller can be reduced. In addition, the state monitoring circuit (40) is not directly connected to a power input terminal of the charging circuit (20), which can reduce voltage surges and improve the operational safety of the controller.

Description

Atomization drive circuit, atomization device and its condition monitoring method

[0001] This application claims priority to Chinese Patent Application No. 202411785851.1, filed on December 5, 2024, entitled "Atomization Drive Circuit, Atomization Device and Condition Monitoring Method Thereof", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application belongs to the field of atomization equipment technology, and particularly relates to an atomization driving circuit, an atomization device and a method for monitoring its status. Background Technology

[0003] Atomizing devices heat an aerosol-generating matrix to produce aerosols, offering advantages such as safety, convenience, health, and environmental friendliness, thus gaining increasing attention and popularity. Atomizing devices typically include an atomization drive circuit and an atomizer. The atomization drive circuit outputs a drive signal to drive the atomizer to heat the internal aerosol-generating matrix, thereby generating aerosols for the user to inhale. The atomization drive circuit usually includes a charging circuit, a battery module, and a controller. When the controller is operating, it needs to determine the connection status between the charging circuit and the external charging module, as well as whether the battery module is fully charged, to control the charging process.

[0004] In conventional testing methods, one signal terminal of the controller is connected to the power input terminal of the charging circuit through a voltage divider circuit to determine the insertion / removal status of the external charging circuit, and another signal terminal is connected to the battery charging indicator terminal of the charging circuit to determine the full charge status of the battery module.

[0005] However, this detection method requires the use of two ports of the controller, and when there is an overvoltage at the power input terminal of the charging circuit, it causes a voltage surge to the controller, which can easily burn out the controller and its ports. Technical issues

[0006] The purpose of this application is to provide an atomization driving circuit that aims to solve the problems of resource occupation and overvoltage risk in traditional external charging module plugging / unplugging and full charge detection methods. Technical solutions

[0007] To solve the above-mentioned technical problems, the technical solution adopted in the embodiments of this application is as follows:

[0008] A first aspect of this application provides an atomization driving circuit for connecting an atomizer and outputting electrical energy and an atomization control signal to drive the atomizer to perform atomization operations. The atomization driving circuit includes:

[0009] The atomization driving circuit includes:

[0010] The charging interface is used to connect an external charging module and transmit external power.

[0011] The battery module is connected to the atomizer and outputs electrical energy.

[0012] A charging circuit is connected to the charging interface and the battery module respectively. The charging circuit is used to convert the external electrical energy into a charging power source to charge the battery module.

[0013] The charging circuit also includes a status feedback terminal, which has different output states when the charging circuit is in different working states. Each output state is one of a high impedance state, a low level, and a high level.

[0014] A status monitoring circuit is connected to the status feedback terminal. The status monitoring circuit is used to monitor different output states of the status feedback terminal and convert them into output voltage signals of different magnitudes.

[0015] The controller is connected to the battery module, the status monitoring circuit, and the atomizer respectively. The controller is used to output the atomization control signal and determine the connection status of the external charging module and the charging interface and the charging status of the battery module based on the magnitude of the voltage signal.

[0016] Optionally, the state feedback terminal includes a first state feedback terminal and a second state feedback terminal;

[0017] The first state feedback terminal is in a first output state when the external charging module is connected to the charging interface, and in a second output state when the external charging module is not connected to the charging interface and the battery module is fully charged. The first output state and the second output state are different and are respectively one of high impedance, low level and high level output states.

[0018] The second state feedback terminal is in a third output state when the battery module is fully charged and in a fourth output state when the battery module is not fully charged. The third output state and the fourth output state are different and are respectively one of the output states of high impedance, low level and high level.

[0019] Optionally, the first output state and the fourth output state are low-level states, and the second output state and the third output state are high-impedance states;

[0020] The status monitoring circuit includes a first resistor and a second resistor;

[0021] The first end of the first resistor is connected to the power supply terminal of the battery module. The second end of the first resistor, the first state feedback terminal, and the first end of the second resistor constitute the output terminal of the state monitoring circuit. The second end of the second resistor is connected to the second state feedback terminal.

[0022] Optionally, the first output state and the fourth output state are low-level states, and the second output state and the third output state are high-impedance states;

[0023] The status monitoring circuit includes a third resistor, a fourth resistor, a fifth resistor, a first electronic switch, and a second electronic switch.

[0024] The first end of the third resistor is used to input a first operating voltage, the first end of the fourth resistor is used to input a second operating voltage, the second end of the third resistor is connected to the first end of the first electronic switch, the second end of the fourth resistor is connected to the first end of the second electronic switch, the second end of the first electronic switch, the first end of the fifth resistor, and the second end of the second electronic switch constitute the output terminal of the state monitoring circuit, the second end of the fifth resistor is used to input a third operating voltage, the control terminal of the first electronic switch is connected to the first state feedback terminal, the control terminal of the second electronic switch is connected to the second state feedback terminal, the voltage of the first operating voltage is not equal to the voltage of the third operating voltage, and the voltage of the second operating voltage is not equal to the voltage of the third operating voltage.

[0025] Optionally, the voltage of the first operating voltage is not equal to the voltage of the second operating voltage, and / or the resistance value of the third resistor is not equal to the resistance value of the fourth resistor.

[0026] Optionally, the charging circuit includes a charging chip, a first status feedback terminal is a battery charging indicator terminal of the charging chip, and a second status feedback terminal is a battery charging completion indicator terminal of the charging chip.

[0027] Optionally, the atomization driving circuit further includes:

[0028] A power output circuit is connected between the battery module and the atomizer. The power output circuit is used to convert the power signal of the battery module into electrical energy and output it to the atomizer.

[0029] Optionally, the first end of the third resistor and the first end of the fourth resistor are connected to the power supply terminal of the battery module or the power output circuit, and the second end of the fifth resistor is grounded;

[0030] Alternatively, the first end of the third resistor and the first end of the fourth resistor are grounded, and the second end of the fifth resistor is connected to the power supply terminal of the battery module or the power output circuit.

[0031] A second aspect of this application provides an atomizing device, including an atomizer and an atomization driving circuit as described above. The atomizer is connected to the atomization driving circuit, and the atomization driving circuit is used to output electrical energy and atomization control signals to drive the atomizer to perform atomization work.

[0032] A third aspect of this application provides a state monitoring method for an atomizing device, applicable to the atomizing drive circuit described above, the state monitoring method comprising:

[0033] A status monitoring circuit is configured between the status feedback terminal of the charging circuit and the controller of the atomizing device. The status monitoring circuit monitors the output status of the status feedback terminal and converts the output of different voltage signals. The status feedback terminal includes a battery charging indicator terminal and a battery charging complete indicator terminal.

[0034] The controller determines the connection status between the external charging module and the charging interface, as well as the charging status of the battery module, based on voltage signals of different magnitudes. Beneficial effects

[0035] The aforementioned atomization drive circuit includes a charging interface, a battery module, a charging circuit, a status monitoring circuit, and a controller. The status monitoring circuit is connected to the status feedback terminal of the charging circuit. The status feedback terminal exhibits different output states depending on the connection state between the charging interface and the external charging module, as well as different output states depending on whether the battery is fully charged or not. It can be configured as high, high level, or low level, respectively. The status monitoring circuit outputs voltage signals of different magnitudes accordingly. The controller determines the connection state between the charging interface and the external charging module and the charging state of the battery module based on the magnitude change of the received voltage signal. By setting up a status monitoring circuit and connecting it to the status feedback terminal of the charging circuit to achieve status detection, the port resources occupied by the controller can be reduced. At the same time, the status monitoring circuit and the power input terminal of the charging circuit are not directly connected, which can reduce voltage surges and improve the working safety of the controller.

[0036] It is understood that the beneficial effects of the second and third aspects mentioned above can be found in the relevant descriptions in the first aspect above, and will not be repeated here. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 is a schematic diagram of a first module of the atomization driving circuit provided in an embodiment of this application;

[0039] Figure 2 is a schematic diagram of a second module of the atomization driving circuit provided in an embodiment of this application;

[0040] Figure 3 is a schematic diagram of a first type of atomization driving circuit provided in an embodiment of this application;

[0041] Figure 4 is a second circuit diagram of the atomization driving circuit provided in an embodiment of this application;

[0042] Figure 5 is a schematic diagram of a third type of atomization driving circuit provided in an embodiment of this application;

[0043] Figure 6 is a schematic diagram of the third module of the atomization driving circuit provided in the embodiment of this application;

[0044] Figure 7 is a schematic diagram of the fourth type of atomization driving circuit provided in the embodiments of this application;

[0045] Figure 8 is a fifth circuit diagram of the atomization driving circuit provided in the embodiments of this application;

[0046] Figure 9 is a schematic diagram of the modules of the atomizing device provided in the embodiment of this application;

[0047] Figure 10 is a flowchart illustrating the status monitoring method provided in an embodiment of this application.

[0048] The figures in the diagram are labeled as follows:

[0049] 100. Atomization drive circuit; 200. Atomizer; 10. Charging interface; 20. Charging circuit; 30. Battery module; 40. Status monitoring circuit; 50. Controller; 60. Power output circuit;

[0050] R1, first resistor; R2, second resistor; R3, third resistor; R4, fourth resistor; R5, fifth resistor; Q1, first electronic switch transistor; Q2, second electronic switch transistor; U1, charging chip;

[0051] FB, Status Feedback Terminal; FB1, First Status Feedback Terminal; FB2, Second Status Feedback Terminal; VCC1, Power Input Terminal of Charging Chip; VCC2, Power Terminal of Controller; IO1, First Signal Terminal; IO2, Second Signal Terminal; CHRG, Battery Charging Indicator Terminal; DONE, Battery Charging Complete Indicator Terminal; BAT, Power Output Terminal of Charging Chip;

[0052] VDD1, first working voltage; VDD2, second working voltage; VDD3, third working voltage; VBAT, terminal voltage of the battery module.

[0053] Implementation methods of this application

[0054] To make the technical problems, technical solutions, and beneficial effects to be solved by 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 are not intended to limit the scope of this application.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0056] The first aspect of this application provides an atomization drive circuit 100 for connecting to an atomizer 200 and outputting electrical energy and atomization control signals to drive the atomizer 200 to perform atomization. The atomizer 200 is provided with a corresponding heating circuit, a heating element, and an atomization chamber for accommodating the aerosol generation matrix. The heating circuit outputs a current signal or generates a magnetic field to the heating element according to the received electrical energy and atomization control signals. The heating element heats up according to the current signal or electromagnetic signal output by the heating circuit and transfers heat to the aerosol generation matrix, thereby generating aerosol for the user to inhale.

[0057] The heating circuit can be a power conversion circuit, an LC resonant circuit, etc., and the heating element can be a heating wire, a substrate strip, etc.

[0058] To simplify the port connections of the controller 50, reduce the port usage of the controller 50, and improve the operational reliability of the controller 50, in this embodiment, as shown in FIG1, the atomization drive circuit 100 includes:

[0059] The charging interface 10 is used to connect an external charging module and transmit external power.

[0060] The battery module 30 is connected to the atomizer 200 and outputs electrical energy.

[0061] The charging circuit 20 is connected to the charging interface 10 and the battery module 30 respectively. The charging circuit 20 is used to convert external electrical energy into charging power to charge the battery module 30.

[0062] The charging circuit 20 also includes a status feedback terminal FB. The status feedback terminal FB has different output states when the charging circuit 20 is in different working states. Each output state is one of the following: high impedance state, low level, and high level.

[0063] The state monitoring circuit 40 is connected to the state feedback terminal FB. The state monitoring circuit 40 is used to monitor different output states of the state feedback terminal FB and convert and output a voltage signal of different magnitudes.

[0064] The controller 50 is connected to the battery module 30, the status monitoring circuit 40 and the atomizer 200 respectively. The controller 50 is used to output atomization control signals and determine the connection status of the external charging module and the charging interface 10 and the charging status of the battery module 30 according to the magnitude of the voltage signal.

[0065] In this embodiment, the battery module 30 outputs electrical energy to the atomizer 200. After the controller 50 detects the inhalation action or receives the inhalation command, it outputs an atomization control signal to the atomizer 200. After receiving the electrical energy and the atomization control signal, the atomizer 200 outputs a current signal or generates a magnetic field to the heating element. The heating element heats up according to the current signal or electromagnetic signal output by the heating circuit and transfers the heat to the aerosol generation matrix, thereby generating an aerosol for the user to inhale.

[0066] The external charging module can be a charger, a mobile energy storage module, etc., and can be a wired or wireless charging module. It transmits external power to the charging interface 10 of the atomization drive circuit 100 via a signal line or wirelessly. The charging circuit 20 operates in different states depending on whether the external charging module is plugged in or out, or when the battery module 30 is in different charging states. The charging circuit 20 is equipped with a status feedback terminal FB for feedback on the plugging / unplugging status of the external charging module and the charging status of the battery module 30. The status feedback terminal FB is a non-power supply terminal and can be one or more pin ports. The status feedback terminal FB is activated when the external charging module is plugged into the charging interface 10. The feed terminal FB is in the first sub-output state. When the external charging module is not inserted, the status feedback terminal FB is in the second sub-output state. When the battery module 30 is connected to the external charging module through the charging interface 10, the battery module 30 obtains charging power and charges. Correspondingly, the status feedback terminal FB also provides feedback on whether the current battery module 30 is fully charged, and outputs the third sub-output state when it is fully charged. Each sub-output state is different and can be one of high configuration, high level and low level. Correspondingly, when the status feedback terminal FB includes multiple pin ports, the combined output states of the multiple pin ports are different. The output state of each pin port can be one of high configuration, high level and low level.

[0067] The state monitoring circuit 40 is connected to the state feedback terminal FB and outputs voltage signals of different magnitudes when the state feedback terminal FB is in different output states. For example, when the state feedback terminal FB is in the first sub-output main state, it outputs a first voltage signal; when the state feedback terminal FB is in the second sub-output state, it outputs a second voltage signal; and when the state feedback terminal FB is in the third sub-output state, it outputs a third voltage signal. The voltage magnitudes of the various voltage signals are not equal.

[0068] The power supply terminal VCC1 of the controller 50 is connected to the power supply terminal of the battery module 30. The first signal terminal IO1 of the controller 50 is connected to the output terminal of the status monitoring circuit 40. The second signal terminal IO2 of the controller 50 is connected to the atomizer 200. The controller 50 scans the voltage change of its own first signal terminal IO1 in real time or at regular intervals, thereby indirectly monitoring the insertion and removal status of the external charging module and the charging status of the battery module 30.

[0069] For example, when the first voltage signal is detected, it is determined that the external charging module is inserted into the charging interface 10. At this time, the controller 50 can be woken up under the voltage signal. When the second voltage signal is detected, it is determined that the external charging module is not connected or is unplugged. When the third voltage signal is detected, it is determined that the battery module 30 is fully charged.

[0070] By setting up a status monitoring circuit 40 and connecting it to the status feedback terminal FB of the charging circuit 20, status detection is achieved. The controller 50 only needs to set up one signal pin to complete the monitoring of the insertion and removal status of the external charging module and the full charge status of the battery, which can reduce the occupation of port resources of the controller 50. At the same time, the status monitoring circuit 40 is not directly connected to the power input terminal of the charging circuit 20, which can reduce voltage surges and improve the working safety of the controller 50.

[0071] The charging interface 10 can be a USB interface, a magnetic interface, etc. The charging circuit 20 can adopt a corresponding charging chip U1, a charging conversion circuit, etc. The corresponding charging chip U1 and the charging conversion circuit are equipped with corresponding ports, and present different output states when the external charging module is plugged in or unplugged or when the battery is fully charged. By monitoring the corresponding port, the external charging module plugging-in status and the battery full status can be monitored. There is no need to configure a voltage divider circuit at the power input terminal of the charging circuit 20, which simplifies the circuit structure and optimizes the port resources of the controller 50. At the same time, it avoids the problem of voltage surge and improves the safety of charging.

[0072] The battery module 30 includes at least a rechargeable battery and corresponding battery management circuits, discharge circuits, etc. connected to the battery. The specific structure of the battery module 30 can be set according to requirements.

[0073] The controller 50 may adopt a corresponding central processing unit, microprocessor or other structure. In an optional embodiment, the controller 50 is a microprocessor.

[0074] The status monitoring circuit 40 can adopt corresponding switch switching circuits, level conversion circuits, etc., and the specific mechanism is not limited.

[0075] When the status feedback terminal FB is a single port, it usually has only two output states. In order to realize the monitoring of three working states: the plugging and unplugging state of the external charging module and the full charge state of the battery, in an optional embodiment, as shown in FIG2, the status feedback terminal FB includes a first status feedback terminal FB1 and a second status feedback terminal FB2.

[0076] The first state feedback terminal FB1 is in a first output state when the charging interface 10 is connected to an external charging module, and in a second output state when the charging interface 10 is not connected to an external charging module and the battery module 30 is fully charged. The output states of the first output state and the second output state are different and are one of the output states of high impedance, low level and high level, respectively.

[0077] The second state feedback terminal FB2 is in the third output state when the battery module 30 is fully charged and in the fourth output state when the battery module 30 is not fully charged. The output states of the third output state and the fourth output state are different and are one of the output states of high impedance, low level and high level respectively.

[0078] In this embodiment, the two status feedback terminals FB of the charging circuit 20 are used to obtain the insertion / removal status of the external charging module and the full charge status of the battery. The two status feedback terminals FB can be combined to feed back three output states. Correspondingly, the status monitoring circuit 40 can output three voltage signals of different magnitudes to the controller 50.

[0079] When the external charging module is not connected and the battery module 30 is not fully charged, the first state feedback terminal FB1 is in the second output state, the second state feedback terminal FB2 is in the fourth output state, and the state monitoring circuit 40 can output the first voltage signal.

[0080] When the external charging module is connected for charging and the battery module 30 is not fully charged, the first state feedback terminal FB1 is in the first output state, the second state feedback terminal FB2 is in the fourth output state, and the state monitoring circuit 40 can output the second voltage signal.

[0081] When the external charging module is connected for charging and the battery module 30 is fully charged, the first state feedback terminal FB1 is in the second output state, the second state feedback terminal FB2 is in the third output state, and the state monitoring circuit 40 can output the third voltage signal.

[0082] The first to the third voltage signals are all different. The controller 50 scans the voltage change of its own first signal terminal IO1 in real time or at regular intervals, thereby indirectly monitoring the insertion and removal status of the external charging module and the charging status of the battery module 30.

[0083] To simplify the circuit structure, in an optional embodiment, as shown in FIG3, the charging circuit 20 includes a charging chip U1, a first state feedback terminal FB1 which is the battery charging indicator terminal CHRG of the charging chip U1, and a second state feedback terminal FB2 which is the battery charging completion indicator terminal DONE of the charging chip U1.

[0084] In this embodiment, the battery charging indicator terminal CHRG is in a level output state when the external charging module is connected to the charging chip U1 through the charging interface 10, and in a high state when the external charging module is not connected to the charging interface 10 and when the battery module 30 is fully charged. The battery charging completion indicator terminal DONE is in a high state when the battery module 30 is not fully charged, and in a level output state when fully charged. The level output states of the battery charging indicator terminal CHRG and the battery charging completion indicator terminal DONE can be output as either high level or low level respectively.

[0085] In an optional embodiment, the battery charging indicator terminal CHRG is at a low level when the external charging module is connected to the charging chip U1 through the charging interface 10, and the battery charging completion indicator terminal DONE is at a low level when the battery module 30 is fully charged.

[0086] When the external charging module is plugged in or unplugged and the charging state of the battery module 30 changes, the output state of the battery charging indicator terminal CHRG switches between low and high levels and the output state of the battery charging completion indicator terminal DONE switches between low and high levels. In an optional embodiment, the state monitoring circuit 40 includes a first resistor R1 and a second resistor R2.

[0087] The first end of the first resistor R1 is connected to the power supply terminal of the battery module 30. The second end of the first resistor R1, the first state feedback terminal FB1, and the first end of the second resistor R2 constitute the output terminal of the state monitoring circuit 40. The second end of the second resistor R2 is connected to the second state feedback terminal FB2.

[0088] In this embodiment, when the external charging module is connected to the charging interface 10 for charging, the battery charging indicator terminal CHRG changes to a low level, and the battery charging completion indicator terminal DONE remains in a high state. At this time, the controller 50 receives a low-level signal and determines that the external charging module is currently plugged in for charging.

[0089] When the battery module 30 is fully charged, the battery charging indicator terminal CHRG changes to a high state, and the battery charging completion indicator terminal DONE switches to a low level. At this time, the first resistor R1 and the second resistor R2 form a voltage divider circuit and divide the terminal voltage VBAT of the battery module 30. Assuming that the voltage of the battery module 30 when it is fully charged is 4.2V, the voltage after voltage division is 1.39V. After receiving 1.39V, the controller 50 determines that the current battery module 30 is fully charged.

[0090] When the external charging module is disconnected from the charging interface 10, both the battery charging indicator terminal CHRG and the battery charging completion indicator terminal DONE are in a high state. At this time, the controller 50 receives the voltage value of the battery module 30 when it is fully charged through the first resistor R1, for example, 4.2V. At this time, the controller 50 can determine that the external charging module is powered off when it is fully charged.

[0091] When the first output state and the fourth output state are in a low-level state, and the second output state and the third output state are in a high-impedance state, the state monitoring circuit 40 can also be configured as a circuit structure with corresponding switches. In another optional embodiment, as shown in FIG5, the state monitoring circuit 40 includes a third resistor R3, a fourth resistor R4, a fifth resistor R5, a first electronic switch Q1, and a second electronic switch Q2.

[0092] The first end of the third resistor R3 is used to input the first working voltage VDD1, the first end of the fourth resistor R4 is used to input the second working voltage VDD2, the second end of the third resistor R3 is connected to the first end of the first electronic switch Q1, the second end of the fourth resistor R4 is connected to the first end of the second electronic switch Q2, the second end of the first electronic switch Q1, the first end of the fifth resistor R5 and the second end of the second electronic switch Q2 constitute the output terminal of the state monitoring circuit 40, the second end of the fifth resistor R5 is used to input the third working voltage VDD3, the control terminal of the first electronic switch Q1 is connected to the first state feedback terminal FB1, the control terminal of the second electronic switch Q2 is connected to the second state feedback terminal FB2, the voltage of the first working voltage VDD1 is not equal to the voltage of the third working voltage VDD3, and the voltage of the second working voltage VDD2 is not equal to the voltage of the third working voltage VDD3.

[0093] In this embodiment, when the external charging module is connected to the charging interface 10 for charging, the battery charging indicator terminal CHRG changes to a low level, and the battery charging completion indicator terminal DONE remains in a high state. At this time, the first electronic switch Q1 is turned on, and the second electronic switch Q2 remains off because it does not receive a signal. The first working voltage VDD1, the third resistor R3, the fifth resistor R5, and the third working voltage VDD3 form a voltage loop and divide the voltage difference between the first working voltage VDD1 and the third working voltage VDD3. Assuming that the first voltage divider signal is output, after the controller 50 receives the first voltage divider signal, it determines that the external charging module is currently inserted for charging.

[0094] When the battery module 30 is fully charged, the battery charging indicator terminal CHRG changes to a high state, and the battery charging completion indicator terminal DONE switches to a low level. At this time, the first electronic switch Q1 switches off, and the second electronic switch Q2 switches on. The second working voltage VDD2, the fourth resistor R4, the fifth resistor R5, and the third working voltage VDD3 form a voltage loop, and the voltage difference between the second working voltage VDD2 and the third working voltage VDD3 is divided. Assuming that the second voltage divider signal is output, after the controller 50 receives the second voltage divider signal, it determines that the current battery module 30 is fully charged. The first voltage divider signal and the second voltage divider signal are not equal.

[0095] When the external charging module is disconnected from the charging interface 10, both the battery charging indicator terminal CHRG and the battery charging completion indicator terminal DONE are in a high state. At this time, the first electronic switch Q1 and the second electronic switch Q2 are not turned on. The controller 50 receives the third working voltage VDD3 through the fifth resistor R5. At this time, the controller 50 can determine that the external charging module is powered off when it is fully charged.

[0096] Among them, the first voltage divider signal, the second voltage divider signal, and the third working voltage VDD3 are all different.

[0097] In order to make the first voltage divider signal, the second voltage divider signal, and the third working voltage VDD3 unequal, in an optional embodiment, the voltage of the first working voltage VDD1 is unequal to the second working voltage VDD2, and / or the resistance values ​​of the third resistor R3 and the fourth resistor R4 are unequal.

[0098] When the resistance values ​​of the third resistor R3 and the fourth resistor R4 are equal, the voltage values ​​of the first working voltage VDD1 and the second working voltage VDD2 can be changed to obtain different working voltages from different voltage terminals in the atomization drive circuit 100. For example, the first working voltage VDD1 can be set to 3.3V, the second working voltage VDD2 to 1.2V, and the third working voltage VDD3 to zero voltage, i.e., grounded.

[0099] Similarly, the first working voltage VDD1 and the second working voltage VDD2 can be set to be equal, and the resistance values ​​of the third resistor R3 and the fourth resistor R4 can be changed. When the resistance values ​​of the third resistor R3 and the fourth resistor are not equal, the voltage values ​​of the first voltage divider signal and the second voltage divider signal are not equal, and different voltage signals can be output to the controller 50.

[0100] Alternatively, the first working voltage VDD1 and the second working voltage VDD2 can be set to be unequal, and the resistance values ​​of the third resistor R3 and the fourth resistor R4 can be changed simultaneously. The first voltage divider signal and the second voltage divider signal, whose output voltage is not equal to the third working voltage VDD3, can be adjusted so that the controller 50 can determine the plugging / unplugging status of the external charging module and the full charge status of the battery based on the different voltage signals received.

[0101] In order to enable the atomization driving circuit 100 to output different operating voltages or to output an operating voltage that meets the requirements of the atomizer 200, in an optional embodiment, as shown in FIG6, the atomization driving circuit 100 further includes:

[0102] The power output circuit 60 is connected between the battery module 30 and the atomizer 200. The power output circuit 60 is used to convert the power signal of the battery module 30 into electrical energy and output it to the atomizer 200.

[0103] In this embodiment, the power output circuit 60 is configured based on the operating voltage of the atomizer 200. When the operating voltage of the atomizer 200 is equal to the terminal voltage VBAT of the battery module 30, the power output circuit 60 can use a switching circuit. When the operating voltage of the atomizer 200 is not equal to the terminal voltage VBAT of the battery module 30, the power output circuit 60 can use a corresponding buck-boost circuit. At the same time, the power output circuit 60 can also be equipped with a corresponding voltage regulator circuit to output a stable operating voltage to the atomizer 200 when the terminal voltage VBAT of the battery module 30 changes.

[0104] Correspondingly, when the power output circuit 60 is set, the first operating voltage VDD1, the second operating voltage VDD2 and the third operating voltage VDD3 can be provided by one or more of the battery module 30 and the power output circuit 60.

[0105] In an optional embodiment, the first end of the third resistor R3 and the first end of the fourth resistor R4 are connected to the power supply terminal of the battery module 30 or the power output circuit 60, and the second end of the fifth resistor R5 is grounded.

[0106] For example, as shown in Figure 7, the first end of the third resistor R3 and the first end of the fourth resistor R4 can both be connected to the power supply terminal of the battery module 30, and the fifth resistor R5 is grounded.

[0107] When the external charging module is connected to the charging interface 10 for charging, the battery charging indicator terminal CHRG changes to a low level, and the battery charging completion indicator terminal DONE remains in a high state. At this time, the first electronic switch Q1 is turned on, and the second electronic switch Q2 remains off because it does not receive a signal. The terminal voltage VBAT of the battery module 30, the third resistor R3, the fifth resistor R5 and the ground terminal form a voltage loop. The third resistor R3 and the fifth resistor R5 divide the terminal voltage VBAT of the battery module 30. Assuming that the first voltage divider signal is output, after the controller 50 receives the first voltage divider signal, it determines that the external charging module is currently plugged in for charging.

[0108] When the battery module 30 is fully charged, the battery charging indicator terminal CHRG changes to a high state, and the battery charging completion indicator terminal DONE switches to a low level. At this time, the first electronic switch Q1 is turned off, and the second electronic switch Q2 is triggered to turn on. The terminal voltage VBAT of the battery module 30, the fourth resistor R4, the fifth resistor R5, and the ground terminal form a voltage loop. The fourth resistor R4 and the fifth resistor R5 divide the terminal voltage VBAT of the battery module 30. Assuming that the second voltage divider signal is output, after the controller 50 receives the second voltage divider signal, it determines that the current battery module 30 is fully charged. The first voltage divider signal and the second voltage divider signal are not equal.

[0109] When the external charging module is disconnected from the charging interface 10, both the battery charging indicator terminal CHRG and the battery charging completion indicator terminal DONE are in a high state. At this time, neither the first electronic switch Q1 nor the second electronic switch Q2 is turned on. The controller 50 receives a low level through the fifth resistor R5. At this time, the controller 50 can determine that the external charging module is powered off when it is fully charged.

[0110] In another alternative embodiment, the first end of the third resistor R3 and the first end of the fourth resistor R4 are grounded, and the second end of the fifth resistor R5 is connected to the power supply terminal of the battery module 30 or the power output circuit 60.

[0111] For example, as shown in Figure 8, the first end of the third resistor R3 and the first end of the fourth resistor R4 are grounded, and the fifth resistor R5 is connected to the power supply terminal of the battery module 30.

[0112] When the external charging module is connected to the charging interface 10 for charging, the battery charging indicator terminal CHRG changes to a low level, and the battery charging completion indicator terminal DONE remains in a high state. At this time, the first electronic switch Q1 is turned on, and the second electronic switch Q2 remains off because it does not receive a signal. The terminal voltage VBAT of the battery module 30, the third resistor R3, the fifth resistor R5 and the ground terminal form a voltage loop. The third resistor R3 and the fifth resistor R5 divide the terminal voltage VBAT of the battery module 30. Assuming that the first voltage divider signal is output, after the controller 50 receives the first voltage divider signal, it determines that the external charging module is currently plugged in for charging.

[0113] When the battery module 30 is fully charged, the battery charging indicator terminal CHRG changes to a high state, and the battery charging completion indicator terminal DONE switches to a low level. At this time, the first electronic switch Q1 is turned off, and the second electronic switch Q2 is triggered to turn on. The terminal voltage VBAT of the battery module 30, the fourth resistor R4, the fifth resistor R5, and the ground terminal form a voltage loop. The fourth resistor R4 and the fifth resistor R5 divide the terminal voltage VBAT of the battery module 30. Assuming that the second voltage divider signal is output, after the controller 50 receives the second voltage divider signal, it determines that the current battery module 30 is fully charged. The first voltage divider signal and the second voltage divider signal are not equal.

[0114] When the external charging module is disconnected from the charging interface 10, both the battery charging indicator terminal CHRG and the battery charging completion indicator terminal DONE are in a high state. At this time, neither the first electronic switch Q1 nor the second electronic switch Q2 is turned on. The controller 50 receives the terminal voltage VBAT of the battery module 30 through the fifth resistor R5. At this time, the controller 50 can determine that the external charging module is powered off when it is fully charged.

[0115] In one optional embodiment, based on the on / off states of the first electronic switch Q1 and the second electronic switch Q2 at corresponding level signals, the first electronic switch Q1 and the second electronic switch Q2 are NPN transistors or NMOS transistors.

[0116] The beneficial effects of this application embodiment compared with the prior art are as follows: The atomization driving circuit 100 mentioned above includes a charging interface 10, a battery module 30, a charging circuit 20, a status monitoring circuit 40, and a controller 50. The status monitoring circuit 40 is connected to the status feedback terminal FB of the charging circuit 20. The status feedback terminal FB has different output states when the charging interface 10 is connected to the external charging module in different states, and different output states when the battery is fully charged or not fully charged. It can be one of the output states of high configuration, high level, and low level. The status monitoring circuit 40 outputs voltage signals of different magnitudes. The controller 50 determines the connection state of the charging interface 10 and the external charging module and the charging state of the battery module 30 based on the magnitude change of the received voltage signal. By setting the status monitoring circuit 40 and connecting it to the status feedback terminal FB of the charging circuit 20 to realize status detection, the port resources occupied by the controller 50 can be reduced. At the same time, the status monitoring circuit 40 is not directly connected to the power input terminal of the charging circuit 20, which can reduce voltage surges and improve the working safety of the controller 50.

[0117] The second aspect of this application provides an atomizing device, as shown in FIG9. The atomizing device includes an atomizer 200 and an atomization driving circuit 100. The specific structure of the atomization driving circuit 100 is as described in the above embodiments. Since this atomizing device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here. The atomizer 200 is connected to the atomization driving circuit 100, which outputs electrical energy and atomization control signals to drive the atomizer 200 to perform atomization.

[0118] In this embodiment, the atomizer 200 is provided with a corresponding heating circuit, a heating element, and an atomization chamber for accommodating the aerosol generating matrix. The heating circuit outputs a current signal or generates a magnetic field to the heating element based on the received electrical energy and atomization control signal. The heating element generates heat based on the current signal or electromagnetic signal output by the heating circuit and transfers heat to the aerosol generating matrix, thereby generating aerosol for the user to inhale.

[0119] The heating circuit can be a power conversion circuit, an LC resonant circuit, etc., and the heating element can be a heating wire, a substrate strip, etc.

[0120] A third aspect of this application provides a state monitoring method for an atomizing device, applicable to the atomizing drive circuit 100 described above. The state monitoring method includes:

[0121] Step S10: Configure a status monitoring circuit 40 between the status feedback terminal FB of the charging circuit 20 and the controller 50 of the atomizing device. The status monitoring circuit 40 monitors the output status of the status feedback terminal FB and converts the output of different voltage signals. The status feedback terminal FB includes a battery charging indicator terminal CHRG and a battery charging completion indicator terminal DONE.

[0122] Step S20: The controller determines the connection status between the external charging module and the charging interface 10, as well as the charging status of the battery module 30, based on voltage signals of different magnitudes.

[0123] In this embodiment, the external charging module can be a corresponding charger, mobile energy storage module, etc. The external charging module can be a wired charging module or a wireless charging module, transmitting external power to the charging interface 10 of the atomization drive circuit 100 via a signal line or wirelessly. When the external charging module is in different insertion / removal states and the battery module 30 is in different charging states, the charging circuit 20 operates in different states. The charging circuit 20 is provided with a status feedback terminal FB for feedback on the insertion / removal state of the external charging module and the charging state of the battery module 30. The status feedback terminal FB is a non-power supply terminal and can be one or more pin ports. The status feedback terminal FB is active when the external charging module is inserted into the charging interface 10. The status feedback terminal FB is in the first sub-output state. When the external charging module is not inserted, the status feedback terminal FB is in the second sub-output state. When the battery module 30 is connected to the external charging module through the charging interface 10, the battery module 30 obtains charging power and charges. Correspondingly, the status feedback terminal FB also provides feedback on whether the current battery module 30 is fully charged, and outputs the third sub-output state when it is fully charged. Each sub-output state is different and can be one of high configuration, high level and low level. Correspondingly, when the status feedback terminal FB includes multiple pin ports, the combined output states of the multiple pin ports are different, and the output state of each pin port can be one of high configuration, high level and low level.

[0124] When the status feedback terminal FB is a single port, it usually has only two output states. In order to monitor the three working states of the external charging module's plug-in / plug-out state and the battery's full charge state, the status feedback terminal FB includes a first status feedback terminal FB1 and a second status feedback terminal FB2. In an optional embodiment, the first status feedback terminal FB1 is the battery charging indicator terminal CHRG of the charging chip U1, and the second status feedback terminal FB2 is the battery charging completion indicator terminal DONE of the charging chip U1.

[0125] The battery charging indicator terminal CHRG is at a low level when the external charging module is connected to the charging chip U1 through the charging interface 10, and at a high level when the external charging module is not connected to the charging interface 10 and when the battery module 30 is fully charged. The battery charging completion indicator terminal DONE is at a high level when the battery module 30 is not fully charged and at a low level when fully charged.

[0126] By configuring a status monitoring circuit 40 at the status feedback terminal FB, different voltage signals can be output when the first status feedback terminal FB1 and the second status feedback terminal FB2 are in different output states, thereby realizing indirect monitoring of the plugging and unplugging status of the external charging module and the charging status of the battery module 30.

[0127] For example, when the external charging module is not connected and the battery module 30 is not fully charged, the first state feedback terminal FB1 is in a high state and the second state feedback terminal FB2 is in a high state, and the state monitoring circuit 40 can output the first voltage signal.

[0128] When the external charging module is connected for charging and the battery module 30 is not fully charged, the first state feedback terminal FB1 is at a low level and the second state feedback terminal FB2 is at a high level, and the state monitoring circuit 40 can output a second voltage signal.

[0129] When the external charging module is connected for charging and the battery module 30 is fully charged, the first state feedback terminal FB1 is in a high state and the second state feedback terminal FB2 is in a low state. The state monitoring circuit 40 can output a third voltage signal.

[0130] By monitoring the changes in the voltage signal output by the status feedback terminal FB, the insertion / removal status of the external charging module and the full charge status of the battery can be determined. When the first voltage signal is received, it can be determined that the external charging module is not connected and the battery module 30 is not fully charged. When the second voltage signal is received, it can be determined that the external charging module is connected for charging and the battery module 30 is not fully charged. When the third voltage signal is received, it can be determined that the external charging module is connected for charging and the battery module 30 is fully charged.

[0131] Status detection is achieved by setting up a status monitoring circuit 40 and connecting it to the status feedback terminal FB of the charging circuit 20. Only one signal pin is needed to monitor the insertion and removal status of the external charging module and the full charge status of the battery, which can reduce the occupation of port resources of the controller 50. At the same time, the status monitoring circuit 40 is not directly connected to the power input terminal of the charging circuit 20, which can reduce voltage surges and improve the working safety of the controller 50.

[0132] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions 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 this application, and should all be included within the protection scope of this application.

Claims

1. An atomizing driving circuit, wherein, The atomization drive circuit is used to connect to the atomizer and output electrical energy and atomization control signals to drive the atomizer to perform atomization work. The atomization driving circuit includes: The charging interface is used to connect an external charging module and transmit external power. The battery module is connected to the atomizer and outputs electrical energy. A charging circuit is connected to the charging interface and the battery module respectively. The charging circuit is used to convert the external electrical energy into a charging power source to charge the battery module. The charging circuit also includes a status feedback terminal, which has different output states when the charging circuit is in different working states. Each output state is one of a high impedance state, a low level, and a high level. A status monitoring circuit is connected to the status feedback terminal. The status monitoring circuit is used to monitor different output states of the status feedback terminal and convert them into output voltage signals of different magnitudes. The controller is connected to the battery module, the status monitoring circuit, and the atomizer respectively. The controller is used to output the atomization control signal and determine the connection status of the external charging module and the charging interface and the charging status of the battery module based on the magnitude of the voltage signal.

2. The atomization driving circuit as described in claim 1, wherein, The status feedback terminal includes a first status feedback terminal and a second status feedback terminal; The first state feedback terminal is in a first output state when the external charging module is connected to the charging interface, and in a second output state when the external charging module is not connected to the charging interface and the battery module is fully charged. The first output state and the second output state are different and are respectively one of high impedance, low level and high level output states. The second state feedback terminal is in a third output state when the battery module is fully charged and in a fourth output state when the battery module is not fully charged. The third output state and the fourth output state are different and are respectively one of the output states of high impedance, low level and high level.

3. The atomization driving circuit as described in claim 2, wherein, The first output state and the fourth output state are low-level states, and the second output state and the third output state are high-impedance states; The status monitoring circuit includes a first resistor and a second resistor; The first end of the first resistor is connected to the power supply terminal of the battery module. The second end of the first resistor, the first state feedback terminal, and the first end of the second resistor constitute the output terminal of the state monitoring circuit. The second end of the second resistor is connected to the second state feedback terminal.

4. The atomization driving circuit as described in claim 2, wherein, The first output state and the fourth output state are low-level states, and the second output state and the third output state are high-impedance states; The status monitoring circuit includes a third resistor, a fourth resistor, a fifth resistor, a first electronic switch, and a second electronic switch. The first end of the third resistor is used to input a first operating voltage, the first end of the fourth resistor is used to input a second operating voltage, the second end of the third resistor is connected to the first end of the first electronic switch, the second end of the fourth resistor is connected to the first end of the second electronic switch, the second end of the first electronic switch, the first end of the fifth resistor, and the second end of the second electronic switch constitute the output terminal of the state monitoring circuit, the second end of the fifth resistor is used to input a third operating voltage, the control terminal of the first electronic switch is connected to the first state feedback terminal, the control terminal of the second electronic switch is connected to the second state feedback terminal, the voltage of the first operating voltage is not equal to the voltage of the third operating voltage, and the voltage of the second operating voltage is not equal to the voltage of the third operating voltage.

5. The atomization driving circuit as described in claim 4, wherein, The voltage of the first operating voltage is not equal to the voltage of the second operating voltage, and / or the resistance value of the third resistor is not equal to the resistance value of the fourth resistor.

6. The atomization driving circuit as described in claim 2, wherein, The charging circuit includes a charging chip, a first status feedback terminal which is a battery charging indicator terminal of the charging chip, and a second status feedback terminal which is a battery charging completion indicator terminal of the charging chip.

7. The atomization driving circuit as described in claim 5, wherein, The atomization driving circuit also includes: A power output circuit is connected between the battery module and the atomizer. The power output circuit is used to convert the power signal of the battery module into electrical energy and output it to the atomizer.

8. The atomization driving circuit as described in claim 7, wherein, The first end of the third resistor and the first end of the fourth resistor are connected to the power supply terminal of the battery module or the power output circuit, and the second end of the fifth resistor is grounded. Alternatively, the first end of the third resistor and the first end of the fourth resistor are grounded, and the second end of the fifth resistor is connected to the power supply terminal of the battery module or the power output circuit.

9. An atomizing device, wherein, The device includes an atomizer and an atomization driving circuit as described in any one of claims 1 to 8, wherein the atomizer is connected to the atomization driving circuit, and the atomization driving circuit is used to output electrical energy and atomization control signals to drive the atomizer to perform atomization work.

10. A method for monitoring the status of an atomizing device, applicable to the atomizing drive circuit as described in any one of claims 1 to 8, wherein, The status monitoring method includes: A status monitoring circuit is configured between the status feedback terminal of the charging circuit and the controller of the atomizing device. The status monitoring circuit monitors the output status of the status feedback terminal and converts the output of different voltage signals. The status feedback terminal includes a battery charging indicator terminal and a battery charging complete indicator terminal. The controller determines the connection status between the external charging module and the charging interface, as well as the charging status of the battery module, based on voltage signals of different magnitudes.

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