Electronic atomization device and detection circuit thereof

Abstract

The invention relates to the technical field of atomization, and discloses an electronic atomization device and a detection circuit thereof, the detection circuit comprises a first switch module, a first one-way conduction module, a first resistor and a voltage division module; when the atomizer is connected with the input connecting end, the first switch module is switched on to output a wake-up signal, and meanwhile, the second end of the voltage division module outputs a first detection signal; when the atomizer is disconnected from the input connection end, the second end of the voltage dividing module outputs a second detection signal. According to the technical scheme, by arranging the first switch module, the first resistor and the first one-way conduction module, it is ensured that when the atomizer is connected with the detection circuit, the wake-up signal can be output, the plug wake-up function is achieved, meanwhile, current consumption during standby is effectively reduced, the problem that standby current is too large is solved, and the service life of the atomizer is prolonged. Different detection signals are output through the voltage dividing module, it is ensured that different output voltages can be detected in different states of the atomizer, and detection of the connection state of the atomizer is achieved.

Description

Technical Field

[0001] The present invention relates to the field of atomization technology, and in particular to an electronic atomization device and a detection circuit thereof. Background Art

[0002] Existing atomizer detection circuit is as follows Figure 1 As shown, it includes a switch module K, a resistor R1, a resistor R2 and a resistor R3. When the atomizer W is inserted into the circuit, the output voltage is detected through the detection terminal V in the circuit. In this circuit, in order to avoid a short circuit of the atomizer, a resistor R1 is usually connected in parallel at both ends of the switch module K. The resistance value of the resistor R1 is usually large, for example, the resistance value is 1M. However, in order to accurately detect the output voltage, it is necessary to set the resistance values ​​of the resistors R2 and R3 to about 1K. Then, in standby mode, V=VCC*(R2+R3) / R1≈0V, where R1 is the resistance value of the resistor R1, R2 is the resistance value of the resistor R2, and R3 is the resistance value of the resistor R3. Therefore, regardless of whether the atomizer W is connected to the circuit, the output voltage cannot be detected, and the plug-in wake-up function cannot be realized. When the second resistor R2 and the third resistor R3 are selected with larger resistance values, for example, R2=1M, R3=4M, the current consumption of the detection port will exceed the power supply, resulting in inaccurate output voltage detection. Therefore, the atomizer detection circuit in the prior art has the defects of large standby current, inability to detect output voltage signals, and inability to implement plug-in wake-up function. Summary of the invention

[0003] The embodiment of the present invention provides an electronic atomization device and a detection circuit thereof to solve the above technical problems.

[0004] A first aspect of an embodiment of the present invention provides a detection circuit for an electronic atomization device, comprising: a first switch module, a first unidirectional conduction module, a first resistor and a voltage dividing module;

[0005] One end of the first switch module and the input end of the first unidirectional conduction module are connected together as the wake-up signal output end of the detection circuit, the other end of the first switch module and one end of the first resistor are connected together and receive the power supply voltage, the control end of the first switch module, the output end of the first unidirectional conduction module, the other end of the first resistor and the first end of the voltage divider module are connected together as the input connection end connected to the atomizer, and the second end of the voltage divider module is the detection signal output end of the detection circuit;

[0006] When the atomizer is connected to the input connection end, the first switch module is turned on to output a wake-up signal, and at the same time, the second end of the voltage divider module outputs a first detection signal;

[0007] When the atomizer is disconnected from the input connection end, the second end of the voltage division module outputs a second detection signal.

[0008] Optionally, the voltage divider module further includes a third terminal, and the third terminal of the voltage divider module is an enable signal output terminal of the detection circuit;

[0009] When the atomizer is connected to the input connection end, the third end of the voltage divider module outputs an enable signal for measuring the resistance value of the atomizer.

[0010] Optionally, the voltage divider module includes a second resistor, a third resistor and a first capacitor, one end of the second resistor is the first end of the voltage divider module, the other end of the second resistor, one end of the first capacitor and one end of the third resistor are connected together as the second end of the voltage divider module, and the other end of the third resistor and the other end of the first capacitor are connected together as the third end of the voltage divider module.

[0011] Optionally, the detection circuit further includes a second unidirectional conduction module, an input end of the second unidirectional conduction module is connected to an output end of the first unidirectional conduction module, and an output end of the second unidirectional conduction module is an input connection end of the atomizer.

[0012] Optionally, the detection circuit further includes a fourth resistor, and the fourth resistor is connected between one end of the first switch module and an input end of the first unidirectional conduction module.

[0013] Optionally, the detection circuit further includes a control module, and an input end of the control module is respectively connected to the wake-up signal output end, the detection signal output end and the enable signal output end;

[0014] The control module starts working when receiving the wake-up signal;

[0015] When the control module receives the first detection signal, it determines that the atomizer is connected to the detection circuit;

[0016] When the control module receives the second detection signal, it determines that the atomizer is disconnected from the detection circuit;

[0017] When the control module receives the enable signal, it detects the resistance value of the atomizer.

[0018] Optionally, the detection circuit further includes a resistance detection module, one end of the resistance detection module receives a preset voltage, the other end of the resistance detection module is connected to one end of the voltage divider module, and the control end of the resistance detection module is connected to the output end of the control module;

[0019] When the control module receives the enable signal, the resistance detection module is controlled to be turned on to detect the resistance of the atomizer.

[0020] Optionally, the resistance detection module includes a second switch module and a third switch module, one end of the second switch module is one end of the resistance detection module, the other end of the second switch module is the other end of the resistance detection module, one end of the third switch module is connected to the control end of the second switch module, the other end of the third switch module is grounded, and the control end of the third switch module is the control end of the resistance detection module.

[0021] Optionally, the voltage divider module includes at least two voltage divider sub-modules, the first end of each voltage divider sub-module is commonly connected as the first end of the voltage divider module, the first end of each voltage divider sub-module is an input connection end of an atomizer, the second end of each voltage divider sub-module is a detection signal output end, and the third end of each voltage divider sub-module is an enable signal output end.

[0022] A second aspect of an embodiment of the present invention provides an electronic atomization device, comprising: the detection circuit and an atomizer as described in the first aspect, wherein the atomizer is connected between the input connection terminal and ground.

[0023] The technical effect of the embodiment of the present invention is as follows: the technical solution ensures that the wake-up signal can be output when the atomizer is connected to the detection circuit by setting the first switch module, the first resistor and the first unidirectional conduction module, realizes the plug-in wake-up function, and solves the problem that the traditional circuit cannot be awakened. Through the design of the first resistor and the voltage divider module, the current consumption during standby is effectively reduced, and the problem of excessive standby current is solved. Different detection signals are output by the voltage divider module, ensuring that different output voltages can be detected in different states of the atomizer, and realizing the detection of the connection state of the atomizer. Through the combined design of the above modules, the circuit not only solves the defects of large standby current, inability to detect output voltage signals, and inability to realize plug-in wake-up function in the prior art, but also improves the efficiency and stability of the overall detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0025] Figure 1 It is a circuit diagram of a detection circuit of an electronic atomization device provided by the prior art;

[0026] Figure 2 It is a structural schematic diagram of a detection circuit of an electronic atomization device provided by the technical solution 1 in the first embodiment of the present invention;

[0027] Figure 3It is a current flow diagram of a detection circuit of an electronic atomization device provided by the technical solution 1 in the embodiment 1 of the present invention when the atomizer is connected;

[0028] Figure 4 It is a current flow diagram of a detection circuit of an electronic atomization device provided by the technical solution 1 in the embodiment 1 of the present invention when the atomizer is pulled out;

[0029] Figure 5 It is a structural schematic diagram of a detection circuit of an electronic atomization device provided by technical solution 2 in embodiment 1 of the present invention;

[0030] Figure 6 It is a structural schematic diagram of a voltage divider module in a detection circuit of an electronic atomization device provided by technical solution 2 in embodiment 1 of the present invention;

[0031] Figure 7 It is a structural schematic diagram of a detection circuit of an electronic atomization device provided by technical solution three in embodiment one of the present invention;

[0032] Figure 8 It is a current flow diagram of a detection circuit of an electronic atomization device provided by technical solution three in embodiment one of the present invention when an atomizer is connected;

[0033] Fig. 9 It is a structural schematic diagram of a detection circuit of an electronic atomization device provided by technical solution 4 in embodiment 1 of the present invention;

[0034] Fig.10 It is a current flow diagram of a detection circuit of an electronic atomization device provided by technical solution 4 in embodiment 1 of the present invention when the atomizer is pulled out;

[0035] Fig.11 It is a structural schematic diagram of a detection circuit of an electronic atomization device provided by technical solution five in embodiment one of the present invention;

[0036] Fig.12 It is a structural schematic diagram of a detection circuit of an electronic atomization device provided by technical solution five in embodiment one of the present invention after a resistance detection module is added;

[0037] Fig.13 It is a structural schematic diagram of a resistance detection module in a detection circuit of an electronic atomization device provided by technical solution five in embodiment one of the present invention;

[0038] Fig.14 is a circuit diagram of a detection circuit of an electronic atomization device provided in Embodiment 1 of the present invention;

[0039] Fig.15This is a current flow diagram of a detection circuit of an electronic atomization device provided in Embodiment 1 of the present invention when no atomizer is connected;

[0040] Fig.16 This is a current flow diagram of a detection circuit of an electronic atomization device provided in Embodiment 1 of the present invention for waking up the MCU when the atomizer is connected;

[0041] Fig.17 It is a current flow diagram of a detection circuit of an electronic atomization device provided in Embodiment 1 of the present invention, which is detected by the MCU when the atomizer is connected;

[0042] Fig.18 This is a current flow diagram of a detection circuit of an electronic atomization device provided in Embodiment 1 of the present invention when the atomizer is pulled out;

[0043] Fig.19 It is a structural schematic diagram of a detection circuit of an electronic atomization device provided in Embodiment 2 of the present invention;

[0044] In the figure: 100, atomizer; 101, first switch module; 102, first unidirectional conduction module; 103, first resistor; 104, voltage divider module; 105, second unidirectional conduction module; 106, fourth resistor; 107, control module; 141, second resistor; 142, third resistor; 143, first capacitor; 144, voltage divider module; 171, second switch module; 172, third switch module. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] It should be understood that the present invention can be implemented in different forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, providing these embodiments will make the disclosure thorough and complete and fully convey the scope of the present invention to those skilled in the art. In the accompanying drawings, the sizes and relative sizes of layers and regions may be exaggerated for clarity. The same reference numerals throughout represent the same elements.

[0047] In order to fully understand the present invention, detailed structures and steps will be presented in the following description to illustrate the technical solutions proposed by the present invention. The preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other implementations.

[0048] Embodiment 1

[0049] The technical solution 1 of the first embodiment provides a detection circuit of an electronic atomization device, such as Figure 2 As shown, it includes: a first switch module 101, a first unidirectional conduction module 102, a first resistor 103 and a voltage dividing module 104;

[0050] One end of the first switch module 101 and the input end of the first unidirectional conduction module 102 are connected together as the wake-up signal output end V0 of the detection circuit, the other end of the first switch module 101 and one end of the first resistor 103 are connected together and receive the power supply voltage VCC, the control end of the first switch module 101, the output end of the first unidirectional conduction module 102, the other end of the first resistor 103 and the first end of the voltage divider module 104 are connected together as the input connection end V1 connected to the atomizer 100, and the second end of the voltage divider module 104 is the detection signal output end V2 of the detection circuit;

[0051] When the atomizer 100 is connected to the input connection terminal V1, the first switch module 101 is turned on to output a wake-up signal, and at the same time, the second terminal of the voltage divider module 104 outputs a first detection signal;

[0052] When the atomizer 100 is disconnected from the input connection terminal V1 , the second terminal of the voltage dividing module 104 outputs a second detection signal.

[0053] Among them, in the technical solution 1 of the first embodiment of the present invention, the detection circuit of the electronic atomization device solves the defects of the existing technology such as large standby current, inability to detect output voltage signals, and inability to realize plug-in wake-up function by setting the functions and connections of each module. Specifically, the functions and technical effects of each module are as follows:

[0054] The first switch module 101 is used to control the detection circuit to output a wake-up signal. When the atomizer 100 is connected, a voltage drop is formed on the control end of the first switch module 101, thereby controlling the first switch module 101 to conduct, and outputting the power supply voltage as a wake-up signal. The wake-up signal can be used to wake up a controller such as an MCU, so that the MCU starts working. The first unidirectional conduction module 102 ensures that the current can only be conducted in one direction, avoiding the power supply voltage bypassing the first switch module 101 and directly inputting into the wake-up signal output terminal V0. The unidirectional conduction design prevents damage caused by short circuit or reverse current, and protects the stability of the circuit. The first resistor 103 is used for current limiting and voltage stability. By working together with other modules, a reasonable current limit is achieved in the detection circuit. The resistance value of the first resistor 103 is usually designed to be relatively large, for example, it is set to 1 megohm, avoiding the problem of excessive standby current caused by excessive current. The voltage dividing module 104 divides the voltage in the circuit to output different detection signals to distinguish whether the atomizer 100 is connected. The voltage dividing module 104 outputs different voltage signals through the voltage dividing circuit, thereby ensuring the accuracy of the detection signal and realizing voltage detection. In addition, the voltage dividing module 104 outputs the first detection signal or the second detection signal according to the connection state of the atomizer 100, thereby solving the problem that the traditional circuit cannot distinguish whether the atomizer 100 is connected or not.

[0055] The working process of the detection circuit provided by the technical solution 1 of the first embodiment is as follows:

[0056] like Figure 3 As shown, when the atomizer 100 is connected between the input connection terminal and the ground in the detection circuit, the power supply voltage VCC, the first resistor 103, and the atomizer 100 form a first loop. Due to the voltage drop formed on the atomizer 100, the first switch module 101 is turned on, and the power supply voltage VCC is output to the wake-up signal output terminal V0 through the first switch module 101 to output the wake-up signal. The voltage divider module 104 outputs the first detection signal by detecting the voltage change. Since the resistance of the atomizer 100 is small, the voltage value of the first detection signal is almost 0.

[0057] like Figure 4 As shown, when the atomizer 100 is disconnected from the detection circuit, the power supply voltage VCC, the first switch module 101, the first unidirectional conduction module 102, and the voltage divider module 104 form a second loop, and the voltage divider module 104 outputs a second detection signal, which is a fixed voltage value to distinguish the disconnected state of the atomizer 100.

[0058] The technical effect of the technical solution 1 of the first embodiment of the present invention is that: by setting the first switch module, the first resistor and the first unidirectional conduction module, it is ensured that the wake-up signal can be output when the atomizer is inserted, the plug-in wake-up function is realized, and the problem that the traditional circuit cannot be awakened is solved. Through the design of the first resistor and the voltage divider module, the current consumption during standby is effectively reduced, and the problem of excessive standby current is solved. Different detection signals are output by the voltage divider module, ensuring that different output voltages can be detected in different states of the atomizer, and the detection of the connection state of the atomizer is realized. Through the combined design of the above modules, the circuit not only solves the defects of large standby current, inability to detect output voltage signals, and inability to realize plug-in wake-up function in the prior art, but also improves the efficiency and stability of the overall detection.

[0059] Technical Solution 2 of the present embodiment 1 provides a detection circuit for an electronic atomization device, and the voltage divider module 104 is increased to an enable signal output terminal on the basis of Technical Solution 1. Figure 5 As shown, the voltage divider module 104 also includes a third terminal, which is an enable signal output terminal of the detection circuit; when the atomizer 100 is connected to the input connection terminal, the third terminal of the voltage divider module 104 outputs an enable signal for measuring the resistance value of the atomizer 100.

[0060] The voltage divider module 104 has a newly added third terminal for outputting an enable signal to further enhance the function of the circuit, especially for detecting the resistance value of the atomizer 100. The voltage divider module 104 is not only used to output the detection signal, but also outputs the enable signal through the third terminal. When the atomizer 100 is connected, the voltage divider module 104 outputs the enable signal for detecting the resistance value of the atomizer 100.

[0061] The working process of the technical solution 2 of the first embodiment is as follows:

[0062] When the atomizer 100 is connected, the voltage-dividing module 104 not only outputs the first detection signal, but also outputs an enable signal through the third terminal to activate the resistance detection circuit and start detecting the resistance of the atomizer 100 .

[0063] The technical effect of the second technical solution of the first embodiment is that the third terminal newly added by the voltage divider module outputs an enable signal, so that the detection circuit can automatically start resistance detection according to the connection status of the atomizer, making the detection circuit more automated and intelligent.

[0064] The structure of the voltage divider module 104 provided in the second technical solution can be designed into various forms according to specific application scenarios and requirements, including but not limited to the following structures: two series resistor voltage divider circuits, a resistor-capacitor voltage divider circuit, a resistor-diode voltage divider circuit, a Zener diode voltage divider circuit, a resistor-operational amplifier voltage divider circuit and other structures.

[0065] As an implementation of the voltage divider module 104, this implementation is only an example and does not limit the structure of the voltage divider module 104. Figure 6 As shown, the voltage divider module 104 includes a second resistor 141, a third resistor 142 and a first capacitor 143, one end of the second resistor 141 is the first end of the voltage divider module 104, the other end of the second resistor 141, one end of the first capacitor 143 and one end of the third resistor 142 are connected together as the second end of the voltage divider module 104, and the other end of the third resistor 142 and the other end of the first capacitor 143 are connected together as the third end of the voltage divider module 104.

[0066] Among them, the second resistor 141, the third resistor 142 and the first capacitor 143 form a resistor-capacitor voltage-dividing filter circuit, and the input voltage enters the voltage-dividing circuit through the second resistor 141. After the voltage-dividing processing of the second resistor 141 and the third resistor 142, the voltage signals are output at the second end and the third end respectively, and the first capacitor 143 filters the voltage to remove high-frequency noise. The filtering effect provided by the first capacitor 143 can make the voltage-dividing output voltage more stable, especially in a high-frequency or pulse signal environment, it can effectively suppress interference, thereby improving signal quality.

[0067] The technical effect of the implementation method of technical solution 2 of the first embodiment of the present invention is that: through the combination of the second resistor and the third resistor, the voltage divider module can divide the input voltage according to a predetermined ratio to provide a stable output voltage signal, and the RC network formed by the first capacitor and the third resistor can effectively filter high-frequency noise and pulse interference, ensuring that the voltage signal after voltage division is purer and smoother.

[0068] Technical solution 3 of the present embodiment 1 provides a detection circuit of an electronic atomization device, and a second unidirectional conduction module 105 is added on the basis of technical solution 1 or technical solution 2. Taking the addition of the second unidirectional conduction module 105 on technical solution 2 as an example, Figure 7 As shown, the detection circuit further includes a second unidirectional conduction module 105 , the input end of the second unidirectional conduction module 105 is connected to the output end of the first unidirectional conduction module 102 , and the output end of the second unidirectional conduction module 105 is the input connection end of the atomizer 100 .

[0069] Among them, one function of the second unidirectional conduction module 105 is to form a voltage drop when it is turned on to control the conduction of the first switch module 101. Another function is to further limit the flow direction of the current on the basis of the first unidirectional conduction module 102 to ensure that the current only flows toward the atomizer 100 to avoid unnecessary current backflow or reverse conduction.

[0070] The working process of the detection circuit provided by the third technical solution of the first embodiment is as follows:

[0071] like Figure 8As shown, when the atomizer 100 is connected between the input connection terminal of the detection circuit and the ground, the power supply voltage VCC, the first resistor 103, the second unidirectional conduction module 105, and the atomizer 100 form a third loop. Since a voltage drop is formed when the second unidirectional conduction module 105 is turned on, the first switch module 101 is turned on, and the power supply voltage VCC is output to the wake-up signal output terminal V0 through the first switch module 101, and the wake-up signal is output. The voltage divider module 104 outputs a first detection signal by detecting the voltage change. Since the resistance of the atomizer 100 is small, the voltage value of the first detection signal is almost 0.

[0072] The technical effect of technical solution three of the first embodiment of the present invention is that the second unidirectional conduction module controls the conduction of the first switch module through the voltage drop it generates, so that the circuit has adaptive capability and can realize the conduction of the switch module according to the actual current conditions. The second unidirectional conduction module and the first unidirectional conduction module jointly ensure the unidirectionality of the current and avoid the interference of reverse current on the circuit.

[0073] Technical solution 4 of the present embodiment 1 provides a detection circuit of an electronic atomization device, and a fourth resistor 106 is added on the basis of technical solution 1 or technical solution 2 or technical solution 3. For example, the fourth resistor 106 is added on the basis of technical solution 3. Fig. 9 As shown, the detection circuit further includes a fourth resistor 106 , which is connected between one end of the first switch module 101 and the input end of the first unidirectional conduction module 102 .

[0074] The fourth resistor 106 , the first switch module 101 , the first unidirectional conduction module 102 and the voltage divider module 104 form a current loop to limit the current in the current loop.

[0075] The working process of the detection circuit provided by the fourth technical solution of the first embodiment is as follows:

[0076] like Fig.10 As shown, when the atomizer 100 is disconnected from the detection circuit, the power supply voltage VCC, the first switch module 101, the fourth resistor 106, the first unidirectional conduction module 102, the second unidirectional conduction module 105, and the voltage dividing module 104 form a fourth loop, and the voltage dividing module 104 outputs a second detection signal and an enable signal. The second detection signal is a fixed voltage value to distinguish the unconnected state of the atomizer 100. The enable signal activates the resistance detection circuit in the circuit to start detecting the resistance of the atomizer 100.

[0077] The technical effect of the fourth technical solution of the first embodiment is that the introduction of the fourth resistor can effectively prevent excessive current from causing damage to subsequent circuit components (such as the first unidirectional conduction module and the atomizer, etc.), and plays a role in current regulation and protection. It ensures that when the first switch module is turned on, the current flows to the subsequent circuit in a controllable manner, avoids sudden current inrush, and improves the safety and stability of the circuit.

[0078] Technical solution five of the first embodiment of the present invention provides a detection circuit of an electronic atomization device. A control module is added to any of the above technical solutions. For example, adding a control module to technical solution two is used as an example. Fig.11 As shown, the detection circuit also includes a control module 107, and the input end of the control module 107 is respectively connected to the wake-up signal output end V0, the detection signal output end V2 and the enable signal output end V3; the control module 107 starts to work when receiving the wake-up signal; when the control module 107 receives the first detection signal, it determines that the atomizer 100 is connected to the detection circuit; when the control module 107 receives the second detection signal, it determines that the atomizer 100 is disconnected from the detection circuit; when the control module 107 receives the enable signal, it detects the resistance value of the atomizer 100.

[0079] Among them, the input end of the control module 107 is respectively connected to the wake-up signal output end V0, the detection signal output end V2 and the enable signal output end V3, and makes corresponding control decisions according to the states of these signals. When the atomizer 100 is connected to the detection circuit, the wake-up signal output end V0 of the detection circuit sends a wake-up signal to the control module 107, triggering the control module 107 to start working. The wake-up signal ensures that the control module 107 starts running only when needed (such as when the atomizer 100 is connected), avoiding unnecessary energy consumption, not only improving the energy efficiency of the circuit, but also reducing the invalid work when the circuit is not in use. The detection signal output end V2 sends a first detection signal or a second detection signal to the control module 107 to indicate whether the atomizer 100 is connected to the detection circuit. The detection signal output end V2 enables the control module 107 to judge the state of the atomizer 100 by outputting different signals. If the control module 107 receives the first detection signal, it determines that the atomizer 100 is connected; if the control module 107 receives the second detection signal, it determines that the atomizer 100 is not connected. After the atomizer 100 is connected to the circuit, the enable signal output terminal V3 sends an enable signal to the control module 107, triggering the control module 107 to start detecting the resistance of the atomizer 100. The introduction of the enable signal output terminal V3 enables the control module 107 to further perform resistance detection. That is, the control module 107 in the fifth technical solution can not only determine whether the atomizer 100 is connected, but also adjust the working state or perform other operations according to the resistance information of the atomizer 100.

[0080] The working process of the technical solution 5 in the first embodiment is as follows:

[0081] When the control module 107 receives the wake-up signal, it is activated and starts to enter the working state. The control module 107 determines the state of the atomizer 100 according to the signal provided by the detection signal output terminal. If the first detection signal is received, it is determined that the atomizer 100 has been connected to the detection circuit; if the second detection signal is received, it is determined that the atomizer 100 is not connected to the circuit. If the control module 107 receives the enable signal, the resistance detection module is started to detect the resistance of the atomizer 100. By analyzing the resistance, further judgments can be made, such as adjusting the power or activating other functions.

[0082] The technical effect of technical solution five of the first embodiment of the present invention is that the control module realizes automatic judgment of the state of the atomizer by receiving the wake-up signal, the detection signal and the enable signal, and starts the relevant functions at the appropriate time. This fully automatic detection process reduces the complexity of operation and makes the detection circuit more automated and intelligent.

[0083] As an implementation method for detecting the resistance of the atomizer in the fifth technical solution, Fig.12 As shown, the detection circuit also includes a resistance detection module 108, one end of the resistance detection module 108 receives a preset voltage, the other end of the resistance detection module 108 is connected to one end of the voltage divider module 104, and the control end of the resistance detection module 108 is connected to the output end of the control module 107; when the control module 107 receives an enable signal, the resistance detection module 108 is controlled to be turned on to detect the resistance of the atomizer 100.

[0084] The resistance detection module 108 is used to measure the actual resistance of the atomizer 100. After receiving the preset voltage, the resistance detection module 108 can be turned on under the control of the control module 107 and start to detect the resistance of the atomizer 100. After receiving the enable signal, the control module 107 controls the on or off of the resistance detection module 108. One end of the voltage divider module 104 is connected to the resistance detection module 108 to provide a voltage divider voltage for detecting the resistance. The voltage divider module 104 distributes the voltage signal in the circuit in proportion so that the resistance detection module 108 can accurately detect the resistance of the atomizer 100. The preset voltage is provided to the resistance detection module 108 as a known condition for calculating the current during the detection process.

[0085] The working process of this embodiment is as follows: when the control module 107 receives the enable signal, it controls the resistance detection module 108 to be turned on. When the resistance detection module 108 is turned on, it receives a preset voltage. The control module 107 calculates the resistance value of the atomizer 100 according to the preset voltage, the input voltage of the atomizer 100, and the resistance value of the voltage divider resistor in the voltage divider module 104.

[0086] The technical effect of this embodiment is that by controlling the operation of the resistance detection module and receiving the signals of the preset voltage and the voltage divider module, the resistance of the atomizer can be accurately measured, ensuring that the state of the atomizer can be grasped in real time and adjusted according to the detection results.

[0087] As an implementation method, Fig.13 As shown, the resistance detection module 108 includes a second switch module 171 and a third switch module 172, one end of the second switch module 171 is one end of the resistance detection module 108, the other end of the second switch module 171 is the other end of the resistance detection module 108, one end of the third switch module 172 is connected to the control end of the second switch module 171, the other end of the third switch module 172 is grounded, and the control end of the third switch module 172 is the control end of the resistance detection module 108.

[0088] The third switch module 172 controls the conduction state of the second switch module 171, receives a PWM signal from the outside, and indirectly controls the working state of the second switch module 171 by controlling its own conduction or cutoff. The second switch module 171 controls the switch state of the main current path of the resistance detection module 108, and determines the connectivity of the resistance detection loop by its conduction or not. The second switch module 171 and the third switch module 172 can be MOS tubes, and the third switch module 172 is controlled to be turned on by outputting a PWM signal, thereby controlling the conduction of the second switch module 171.

[0089] The technical effect of this embodiment is that: through the coordinated work of the above modules, the resistance detection module can disconnect the detection circuit when measurement is not needed to reduce standby power consumption; when resistance detection is needed, the third switch module can be controlled to be turned on through a PWM signal, thereby turning on the second switch module, establishing a stable measurement path, and facilitating the control module to measure the resistance of the atomizer.

[0090] The following is a detailed description of the technical solutions 1 to 5 of the first embodiment through the specific circuit of the detection circuit:

[0091] like Fig.14As shown, the detection circuit includes a first switch module 101, a first unidirectional conduction module 102, a second unidirectional conduction module 105, a first resistor 103, a fourth resistor 106, a voltage divider module 104 and a resistance detection module 108. The first switch module 101 is a MOS tube Q11, the first unidirectional conduction module 102 is a diode D1, the second unidirectional conduction module 105 is a diode D7, the first resistor 103 is a resistor R10, and the fourth resistor 106 is a resistor R4. The voltage divider module 104 includes a second resistor 141, a third resistor 142 and a first capacitor 143. The second resistor 141 is a resistor R21, the third resistor 142 is a resistor R25, and the first capacitor 143 is a capacitor C13. The resistance detection module includes a second switch module 171 and a third switch module 172. The second switch module 171 is a MOS tube Q3, and the third switch module 172 is a MOS tube Q4. The resistance detection module also includes a resistor R24, a resistor R27, a resistor R28 and a resistor R29.

[0092] The connection relationship between the components in this detection circuit is as follows: the source of the MOS tube Q11 and one end of the resistor R10 are connected together to receive a 3V voltage, the drain of the MOS tube Q11 and one end of the resistor R15 are connected together as the wake-up signal output terminal ISRT_WK of the detection circuit, the other end of the resistor R15 is connected to the anode of the diode D1, the gate of the MOS tube Q11, the cathode of the diode D1, the anode of the diode D7 and the other end of the resistor R10 are connected together, the cathode of the diode D7, one end of the resistor R29, the drain of the MOS tube Q3 and one end of the resistor R21 are connected together as the input connection end of the detection circuit, the other end of the resistor R21, the capacitor C1 3 and one end of the resistor R25 are connected together as the detection signal output end of the detection circuit, the other end of the capacitor C13 and the other end of the resistor R25 are connected together as the enable signal output end of the detection circuit, the other end of the resistor R29, the source of the MOS tube Q3, and one end of the resistor R24 ​​are connected together to receive the preset voltage, the gate of the MOS tube Q3, the other end of the resistor R24, and the drain of the MOS tube Q4 are connected together, the source of the MOS tube Q4 and one end of the resistor R28 are connected to the ground, the gate of the MOS tube Q4 is connected to one end of the resistor R27 and the other end of the resistor R28 respectively, and the other end of the resistor R27 is the control end of the resistance detection module 108. Among them, the detection circuit is connected to the MCU, the MCU AD detection port: AD1_RL_L, the MCU AD detection enable port: AD1_RL_L_EN, and the MCU wake-up port: ISRT_WK.

[0093] The working process of this detection circuit is:

[0094] 1. If Fig.15As shown, when the atomizer W is not connected and in standby state, the MCU wake-up port is in the rising edge wake-up state, and the 3V voltage reaches the MCU AD detection enable port AD1_RL_L_EN through the resistor R10, the diode D7, the resistor R21, and the resistor R25 in sequence. Under standby conditions, the MCU enable port AD1_RL_L_EN is high or high impedance. At this time, the MCU AD detection port AD1_RL_L voltage is high, the MCU wake-up port VISRT_WK is low, and the MOS tube Q11 is cut off.

[0095] 2. If Fig.16 As shown, when the atomizer W is inserted into the detection circuit, due to the low resistance of the atomizer W (usually 0.1-2Ω), the 3V voltage passes through the resistor R10, the diode D7, the atomizer W to GND in sequence. Since the gate-source voltage Vgs<0 in the MOS tube Q11, when a 0.7V voltage drop is formed on the diode D7, the MOS tube Q11 is turned on, and the 3V voltage passes through the MOS tube Q11 (DS pole) to the MCU wake-up port ISRT_WK. The MCU wake-up port ISRT_WK level signal switches to a high level signal, thereby waking up the MCU. After the MCU is awakened, the AD detection enable port AD1_RL_L_EN of the MCU becomes low level, and the resistance of the atomizer W is measured.

[0096] The process of measuring the resistance of the atomizer W is as follows: the MCU outputs a PWM control signal to the MOS tube Q4 through the port V1_PWM to control the MOS tube Q4 to be turned on, and then the MOS tube Q3 is controlled to be turned on. Since the voltage of the first branch of the resistor R21 and the resistor R25 and the voltage of the second branch of the atomizer W are both V1, the current flowing through the first branch can be obtained. When the MOS tube Q4 is turned on, the total current flowing through the first branch and the second branch can be obtained according to the voltage difference between the two ends of the MOS tube Q4, and then the current flowing through the second branch can be obtained. Then, according to the voltage of the second DC being V1, the resistance of the atomizer W can be calculated.

[0097] 3. If Fig.17As shown, the MCU wake-up port switches to the push-pull output high-level mode, and the MCU wake-up port outputs a 3V voltage through the resistor R15, the diode D1, the diode D7, the atomizer W to GND. At this time, V1=(3V-VD1-VD7)×RW / (R10+RW), where VD1 is the voltage of the diode D1, VD7 is the voltage of the diode D7, RW is the resistance of the atomizer W, and R10 is the resistance of the resistor R10. Since the value of R10 is very large (MΩ level) and the internal resistance RW of the atomizer W is very small, V1≈0V, and the voltage of the MCU port AD1_RL_L is about 0V. Since the resistance value of R15 is usually selected as 1KΩ, the current is small and the impact is small, which can be ignored at this time, and the voltage VAD1_RL_L of the AD detection port AD1_RL_L=0V.

[0098] like Fig.18 As shown, when the atomizer 100 is unplugged, the MCU wake-up port outputs a 3V voltage through the resistor R15, the diode D1, the diode D7, the resistor R21, the resistor R25 to GND, VAD1_RL_L = (3V-VD1-VD7) × R25 / (R15+R21+R25). In general, VD1 = 0.7V, VD7 = 0.7V, the resistance value of R15 is 1K, and the resistance values ​​of R21 and R25 are 1K. At this time, VAD1_RL_L = (3-0.7-0.7) / 3 = 0.53V.

[0099] When the atomizer W is inserted again, VAD1_RL_L=0V. At this time, the resistance of the atomizer W is measured again.

[0100] 4. When the standby time exceeds the required time, the MCU enters the standby mode, the MCU wake-up port switches to the rising edge wake-up state, and the AD detection enable port AD1_RL_L_EN of the MCU is in a high impedance state; at this time, this part of the standby current I=3V_VIN / R10≈3uA; it meets the design requirements.

[0101] When the plugging and unplugging operation occurs again, repeat steps 1 to 4 above.

[0102] Embodiment 2

[0103] This second embodiment provides a detection circuit for an electronic atomization device. Based on the first embodiment, it can realize connection with multiple atomizers, such as Fig.19 As shown, the voltage divider module 104 includes at least two voltage divider sub-modules 144, the first end of each voltage divider sub-module 144 is commonly connected as the first end of the voltage divider module 104, the first end of each voltage divider sub-module 144 is an input connection end of the atomizer 100, the second end of each voltage divider sub-module 144 is a detection signal output end, and the third end of each voltage divider sub-module 144 is an enable signal output end.

[0104] Wherein, the voltage divider module 104 is composed of at least two voltage divider submodules 144, and each voltage divider submodule 144 has independent connection and output functions. The first ends of all voltage divider submodules 144 are connected together to form the first end of the voltage divider module 104, which is used to connect the input voltage signal. The first end of each voltage divider submodule 144 is independently connected to the input port of an atomizer 100, and is used to output a detection signal according to the atomizer. The second end of each voltage divider submodule 144 is used to output a detection signal, transmit the state or detection result of the voltage divider submodule 144, and monitor the working state or voltage state of the atomizer 100. The third end of each voltage divider submodule 144 is used to output an enable signal, which is usually used to control the start and stop of the resistance measurement circuit.

[0105] The difference between the second embodiment and the first embodiment is that a plurality of voltage-dividing submodules are introduced, each of which can be independently connected to an atomizer, and can support the simultaneous connection and control of multiple atomizers, thereby meeting more diverse application scenarios.

[0106] The technical effect of the second embodiment is that multiple atomizers can be managed in the same pressure-dividing module, and each atomizer can be monitored and controlled independently, which not only enhances the scalability of the system, but also improves the flexibility and accuracy of the overall operation. This multi-pressure-dividing submodule design is particularly suitable for scenarios where multiple atomizers need to be managed simultaneously, and can significantly improve the functionality and reliability of the system.

[0107] Embodiment 3

[0108] The third embodiment provides an electronic atomization device, including: the detection circuit and the atomizer described in the first embodiment or the second embodiment, and the atomizer is connected between the input connection terminal and the ground.

[0109] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.

Claims

1. A detection circuit for an electronic atomization device, characterized in that: include: A first switch module, a first unidirectional conduction module, a first resistor and a voltage divider module; One end of the first switch module and the input end of the first unidirectional conduction module are connected together as the wake-up signal output end of the detection circuit, the other end of the first switch module and one end of the first resistor are connected together and receive the power supply voltage, the control end of the first switch module, the output end of the first unidirectional conduction module, the other end of the first resistor and the first end of the voltage divider module are connected together as the input connection end connected to the atomizer, and the second end of the voltage divider module is the detection signal output end of the detection circuit; When the atomizer is connected to the input connection end, the first switch module is turned on to output a wake-up signal, and at the same time, the second end of the voltage divider module outputs a first detection signal; When the atomizer is disconnected from the input connection end, the second end of the voltage division module outputs a second detection signal.

2. The detection circuit according to claim 1, characterized in that: The voltage divider module further includes a third terminal, and the third terminal of the voltage divider module is an enable signal output terminal of the detection circuit; When the atomizer is connected to the input connection end, the third end of the voltage divider module outputs an enable signal for measuring the resistance value of the atomizer.

3. The detection circuit according to claim 2, characterized in that: The voltage divider module includes a second resistor, a third resistor and a first capacitor, one end of the second resistor is the first end of the voltage divider module, the other end of the second resistor, one end of the first capacitor and one end of the third resistor are connected together as the second end of the voltage divider module, and the other end of the third resistor and the other end of the first capacitor are connected together as the third end of the voltage divider module.

4. The detection circuit according to any one of claims 1 to 3, characterized in that: The detection circuit further comprises a second one-way conduction module, the input end of the second one-way conduction module is connected to the output end of the first one-way conduction module, and the output end of the second one-way conduction module is the input connection end of the atomizer.

5. The detection circuit according to claim 4, characterized in that: The detection circuit further includes a fourth resistor connected between one end of the first switch module and an input end of the first unidirectional conduction module.

6. The detection circuit according to claim 2, characterized in that: The detection circuit further comprises a control module, the input end of the control module being respectively connected to the wake-up signal output end, the detection signal output end and the enable signal output end; The control module starts working when receiving the wake-up signal; When the control module receives the first detection signal, it determines that the atomizer is connected to the detection circuit; When the control module receives the second detection signal, it determines that the atomizer is disconnected from the detection circuit; When the control module receives the enable signal, it detects the resistance value of the atomizer.

7. The detection circuit according to claim 6, characterized in that: The detection circuit further comprises a resistance detection module, one end of which receives a preset voltage, the other end of which is connected to one end of the voltage divider module, and the control end of which is connected to the output end of the control module; When the control module receives the enable signal, the resistance detection module is controlled to be turned on to detect the resistance of the atomizer.

8. The detection circuit according to claim 7, characterized in that: The resistance detection module includes a second switch module and a third switch module, one end of the second switch module is one end of the resistance detection module, the other end of the second switch module is the other end of the resistance detection module, one end of the third switch module is connected to the control end of the second switch module, the other end of the third switch module is grounded, and the control end of the third switch module is the control end of the resistance detection module.

9. The detection circuit according to claim 2, characterized in that: The voltage divider module includes at least two voltage divider submodules, the first end of each voltage divider submodule is commonly connected as the first end of the voltage divider module, the first end of each voltage divider submodule is an input connection end of an atomizer, the second end of each voltage divider submodule is a detection signal output end, and the third end of each voltage divider submodule is an enable signal output end.

10. An electronic atomization device, characterized in that: include: The detection circuit and atomizer according to any one of claims 1 to 9, wherein the atomizer is connected between the input connection terminal and ground.

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