Control circuit for multiple atomizing bins and electronic atomizer

Abstract

The utility model provides a multi-atomization bin control circuit, the multi-atomization bin control circuit mainly comprises a main control circuit and an atomization bin control circuit, the main control circuit comprises a microcontroller and a key switch, and the key switch is used for controlling a switching signal of the microcontroller. The atomization bin control circuit is composed of three independent atomization temperature control circuits, namely a first atomization temperature control circuit, a second atomization temperature control circuit and a third atomization temperature control circuit, each temperature control circuit comprises an electronic switching tube, the control end of each electronic switching tube is connected with the corresponding switching signal end of the microcontroller, and the microcontroller controls the on-off of the electronic switching tubes. Therefore, the temperature and the on-off state of each atomizing bin are controlled, and the combined effect of various atomizing tastes is achieved. Meanwhile, by adjusting the conduction state of the electronic switch tube, the current flowing through the heating wire of each atomization bin can be changed so as to accurately control the temperature curve and the atomization taste effect of the heating wire, and then the multiple atomization bin control circuits can meet the diversified requirements of users.

Description

Technical Field

[0001] The present disclosure relates to the technical field of electronic atomizers, and in particular to a multiple atomization chamber control circuit and an electronic atomizer. Background Art

[0002] In the field of e-cigarette technology, traditional e-cigarette designs typically include a single atomizer chamber, which limits the user's flavor choices during smoking and results in a relatively monotonous user experience. Although some e-cigarette products attempt to change the flavor of the vapor by replacing the cartridge or adjusting the voltage, these methods are cumbersome and have limited effectiveness, making it difficult to meet users' demand for a diverse flavor experience.

[0003] For example, reference CN201320830877.4 discloses a control circuit and electronic cigarette. When a user smokes an electronic cigarette, an airflow sensor collects airflow signals from the inhaled electronic cigarette. The collected airflow signals are then sent to a microprocessor or comparison control circuit within a control module. The airflow signals are then compared with a preset value. Based on the comparison result, the control module sends a conduction signal to the corresponding switch unit. If only one preset value is less than the airflow signal, only the corresponding switch unit is turned on. If multiple preset values ​​are less than the airflow signal, the comparison control circuit with the largest preset value outputs a conduction signal and suppresses the other smaller comparison control circuits, ensuring that only one switch unit is turned on. Upon receiving the conduction signal, the switch unit turns on, activating the corresponding heating element, heating the oil in the oil reservoir and atomizing it into smoke. Finally, a timing unit controls the operating time of the heating element. After the predetermined time is reached, the switch unit automatically turns off, stopping heating and conserving oil and energy. However, this solution only provides a single taste for the electronic cigarette, failing to meet the demand for a diverse flavor experience. It also struggles to precisely control the temperature of the heating wire, and thus, the precise regulation of the atomized flavor. Utility Model Content

[0004] The purpose of the present disclosure is to overcome the deficiencies in the prior art and to provide a multi-atomization chamber control circuit and an electronic atomizer that can accurately control the temperature.

[0005] The purpose of this disclosure is achieved through the following technical solutions:

[0006] A plurality of atomization chamber control circuits include a main control circuit, an atomization chamber control circuit, and a charging circuit. The charging circuit is used to control the charging process of a battery. The main control circuit includes a microcontroller and a key switch. The first end of the key switch is connected to the switch control signal end of the microcontroller, and the second end of the key switch is grounded.

[0007] The atomization chamber control circuit includes a first atomization temperature control circuit, a second atomization temperature control circuit and a third atomization temperature control circuit. The first atomization temperature control circuit includes a first electronic switch tube and a first resistor. The control end of the first electronic switch tube is connected to the first switch signal end of the microcontroller, the first end of the first electronic switch tube is used to be connected to the battery power supply end, the second end of the first electronic switch tube is connected to the first end of the first resistor, the second end of the first resistor is connected to the first voltage sampling end of the microcontroller, and the second end of the first electronic switch tube is also used to be connected to the positive end of the heating wire of the first atomization temperature control circuit.

[0008] The second atomization temperature control circuit includes a second electronic switch tube and a second resistor. The control end of the second electronic switch tube is connected to the second switch signal end of the microcontroller. The first end of the second electronic switch tube is used to be connected to the battery power supply end. The second end of the second electronic switch tube is connected to the first end of the second resistor. The second end of the second resistor is connected to the second voltage sampling end of the microcontroller. The second end of the second electronic switch tube is also used to be connected to the positive end of the heating wire of the second atomization temperature control circuit.

[0009] The third atomization temperature control circuit includes a third electronic switch tube and a third resistor. The control end of the third electronic switch tube is connected to the third switch signal end of the microcontroller. The first end of the third electronic switch tube is used to be connected to the battery power supply end. The second end of the third electronic switch tube is connected to the first end of the third resistor. The second end of the third resistor is connected to the third voltage sampling end of the microcontroller. The second end of the third electronic switch tube is also used to be connected to the positive end of the heating wire of the third atomization temperature control circuit.

[0010] The first atomizing temperature control circuit, the first atomizing temperature control circuit, and the negative end of the heating wire of the first atomizing temperature control circuit are all connected to the ground end.

[0011] In one embodiment, the first atomization temperature control circuit further includes a fourth resistor, a first end of the fourth resistor is connected to the first end of the first electronic switch tube, and a second end of the fourth resistor is connected to the control end of the first electronic switch tube.

[0012] In one embodiment, the second atomization temperature control circuit further includes a fifth resistor, a first end of the fifth resistor is connected to the first end of the second electronic switch tube, and a second end of the fifth resistor is connected to the control end of the second electronic switch tube.

[0013] In one embodiment, the third atomization temperature control circuit further includes a sixth resistor, a first end of the sixth resistor is connected to the first end of the third electronic switch tube, and a second end of the sixth resistor is connected to the control end of the third electronic switch tube.

[0014] In one embodiment, the main control circuit further includes a seventh resistor, a first end of the seventh resistor is used to be connected to the battery power supply end, and a second end of the seventh resistor is connected to the power input end of the microcontroller.

[0015] In one embodiment, the main control circuit further includes a first capacitor, a first end of the first capacitor is connected to a power input end of the microcontroller, and a second end of the first capacitor is grounded.

[0016] In one embodiment, the charging circuit includes a charging control chip and a second capacitor, a first end of the second capacitor is connected to a battery monitoring terminal and a battery power supply terminal of the charging control chip, and a second end of the second capacitor is grounded.

[0017] In one embodiment, the charging circuit further includes a third capacitor, a first end of the third capacitor is connected to the power input end of the charging control chip, and a second end of the third capacitor is grounded.

[0018] In one embodiment, the charging circuit further includes an eighth resistor, a first end of the eighth resistor is connected to the programming control end of the charging control chip, and a second end of the eighth resistor is grounded.

[0019] An electronic atomizer comprises a plurality of atomization chamber control circuits as described in any one of the above items.

[0020] Compared with the prior art, the present disclosure has at least the following advantages:

[0021] 1. The above-mentioned multiple atomization chamber control circuits control the on-off states of the first electronic switch tube, the second electronic switch tube, and the third electronic switch tube respectively through the first switch signal terminal, the second switch signal terminal, and the third switch signal terminal of the microcontroller to control the temperature and switch state of the heating wires of the multiple atomization chambers, thereby achieving a combination effect of one or more atomization flavors; and by controlling the conduction state of the three electronic switch tubes respectively, the current flowing through the heating wire of each atomization chamber is changed, thereby controlling the temperature curve of each heating wire, and then accurately controlling the atomization flavor effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 A circuit diagram of a control circuit for multiple atomization chambers according to an embodiment;

[0024] Figure 2 for Figure 1 The circuit diagram of the main control circuit shown;

[0025] Figure 3 for Figure 1 The circuit diagram of the atomization chamber control circuit shown;

[0026] Figure 4 for Figure 1 The circuit diagram of the charging circuit is shown. DETAILED DESCRIPTION

[0027] To facilitate understanding of the present disclosure, a more comprehensive description of the present disclosure will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present disclosure. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this disclosure pertains. The terms used herein in the specification of this disclosure are intended only to describe specific embodiments and are not intended to limit this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] In order to better understand the technical solutions and beneficial effects of the present disclosure, the present disclosure is further described in detail below with reference to specific embodiments:

[0031] like Figures 1 to 4As shown, a plurality of atomization control circuits 10 according to an embodiment of the present disclosure include a main control circuit 100 , an atomization control circuit 200 and a charging circuit 300 . The charging circuit 300 is used to control the charging process of the battery.

[0032] The atomization control circuit 200 includes a first atomization temperature control circuit, a second atomization temperature control circuit, and a third atomization temperature control circuit. The first atomization temperature control circuit includes a first electronic switch tube Q1 and a first resistor R11. The control end of the first electronic switch tube Q1 is connected to the first switch signal end Switch of the main control circuit 100. The first end of the first electronic switch tube Q1 is used to connect to the battery power supply end VBAT. The second end of the first electronic switch tube Q1 is connected to the first end of the first resistor R11. The second end of the first resistor R11 is connected to the first voltage sampling end ADC1 of the main control circuit 100. The second end of the first electronic switch tube Q1 is also used to connect to the positive terminal F1+ of the heating wire of the first atomization temperature control circuit.

[0033] The second atomization temperature control circuit includes a second electronic switch tube Q2 and a second resistor R12. The control end of the second electronic switch tube Q2 is connected to the second switch signal terminal Switch2 of the main control circuit 100. The first end of the second electronic switch tube Q2 is used to be connected to the battery power supply terminal VBAT. The second end of the second electronic switch tube Q2 is connected to the first end of the second resistor R12. The second end of the second resistor R12 is connected to the second voltage sampling terminal ADC2 of the main control circuit 100. The second end of the second electronic switch tube Q2 is also used to be connected to the positive terminal F2+ of the heating wire of the second atomization temperature control circuit.

[0034] The third atomization temperature control circuit includes a third electronic switch tube Q3 and a third resistor R13. The control end of the third electronic switch tube Q3 is connected to the third switch signal terminal Switch3 of the main control circuit 100. The first end of the third electronic switch tube Q3 is used to be connected to the battery power supply terminal VBAT. The second end of the third electronic switch tube Q3 is connected to the first end of the third resistor R13. The second end of the third resistor R13 is connected to the third voltage sampling terminal ADC3 of the main control circuit 100. The second end of the third electronic switch tube Q3 is also used to be connected to the positive terminal F3+ of the heating wire of the third atomization temperature control circuit.

[0035] The first atomizing temperature control circuit, the first atomizing temperature control circuit, and the negative terminal F- of the heating wire of the first atomizing temperature control circuit are all connected to the ground terminal.

[0036] In this embodiment, when the user needs to select a different flavor or temperature combination, the microcontroller U1 receives the user instruction through the push button switch K1, and controls the level signals output by the first switch signal terminal Switch, the second switch signal terminal Switch2 and the third switch signal terminal Switch3 respectively to activate or close the corresponding atomization chamber; specifically, when the user needs to turn on the first atomization temperature control circuit, the first switch signal terminal Switch outputs a high-level signal to the control end of the first electronic switch tube Q1, and the voltage at the control end of the first electronic switch tube Q1 will be greater than its threshold voltage, so that the first electronic switch tube Q1 is turned on, and the current flows through the first electronic switch tube Q1 to the positive terminal F1+ of the heating wire of the first atomization temperature control circuit, thereby energizing and heating the heating wire in the first atomization temperature control circuit, and then causing the e-liquid material in the atomization chamber controlled by the first atomization temperature control circuit to be heated and atomized. Similarly, when the user needs to turn on the second atomization temperature control circuit and the third atomization temperature control circuit, the second switch signal terminal Switch2 and the third switch signal terminal Switch3 respectively output high-level signals to the control terminals of the second electronic switch tube Q2 and the third electronic switch tube Q3, so that the second electronic switch tube Q2 and the third electronic switch tube Q3 are turned on, thereby allowing the second atomization temperature control circuit and the third atomization temperature control circuit to respectively control the heating wires of their atomization chambers to heat and atomize the e-liquid material.

[0037] On the other hand, when the first electronic switch tube Q1 is turned on, current also flows through the first resistor R11. Since the second end of the first resistor R11 is connected to the first voltage sampling terminal ADC1 of the microcontroller U1, the microcontroller U1 can obtain the voltage value of the first resistor R11 through the first voltage sampling terminal ADC1, and calculate the operating temperature and resistance value of the first atomization temperature control circuit heating wire according to Ohm's law and TCR; wherein, the relative change rate of resistance with temperature TCR = (R2-R1) / (R1*ΔT), R1 is the resistance value (Ω) when the temperature is T1, R2 is the resistance value (Ω) when the temperature is T2, ΔT is the temperature change, that is, T2-T1 (℃), so that precise control of the atomization flavor can be achieved through calculation by the microcontroller U1. Similarly, when the second electronic switch tube Q2 and the third electronic switch tube Q3 are turned on, the current also flows through the second resistor R12 and the third resistor R13. Since the second ends of the second resistor R12 and the third resistor R13 are respectively connected to the second voltage sampling terminal ADC2 and the third voltage sampling terminal ADC3 of the microcontroller U1, the microcontroller U1 can obtain the voltage values ​​of the second resistor R12 and the third resistor R13 through the second voltage sampling terminal ADC2 and the third voltage sampling terminal ADC3, and calculate the operating temperature and resistance value of the heating wire according to Ohm's law and TCR. Then, the microcontroller U1 controls the conduction state of the three electronic switch tubes to change the current flowing through the heating wire of each atomization chamber respectively, thereby achieving precise control of the flavors of the three atomization chambers at the same time.

[0038] Specifically, according to actual needs, the user can send instructions to the microcontroller U1 through the button switch K1 to control the heating wire temperature and switch status of the three atomization chambers respectively, so that a single atomization chamber or a combination of two atomization chambers can be operated, or all three atomization chambers can be operated at the same time to achieve a combination of one or more atomization flavors. In addition, the temperature curve of the heating wire of each atomization chamber can be accurately controlled by the microcontroller to control the concentration and taste of the atomization flavor.

[0039] The above-mentioned multiple atomization control circuits 10 respectively control the on-off states of the first electronic switch tube Q1, the second electronic switch tube Q2 and the third electronic switch tube Q3 through the first switch signal terminal Switch, the second switch signal terminal Switch2 and the third switch signal terminal Switch3 of the microcontroller U1, so as to control the temperature and switch state of the heating wires of multiple atomization chambers, thereby achieving a combination effect of one or more atomization flavors; and by controlling the conduction state of the three electronic switch tubes respectively, the current flowing through the heating wire of each atomization chamber is changed, thereby controlling the temperature curve of each heating wire, and then accurately controlling the atomization flavor effect.

[0040] In another embodiment, the first electronic switch tube Q1, the second electronic switch tube Q2, and the third electronic switch tube Q3 are all P-channel MOS tubes, the first ends of the first electronic switch tube Q1, the second electronic switch tube Q2, and the third electronic switch tube Q3 are all sources of the P-channel MOS tubes, the second ends of the first electronic switch tube Q1, the second electronic switch tube Q2, and the third electronic switch tube Q3 are all drains of the P-channel MOS tubes, and the control ends of the first electronic switch tube Q1, the second electronic switch tube Q2, and the third electronic switch tube Q3 are all gates of the P-channel MOS tubes.

[0041] like Figure 3 As shown, in one embodiment, the first atomizer temperature control circuit further includes a fourth resistor R6. The first end of the fourth resistor R6 is connected to the first end of the first electronic switch Q1, and the second end of the fourth resistor R6 is connected to the control end of the first electronic switch Q1. In this embodiment, when the voltage at the control end of the first electronic switch Q1 changes, the fourth resistor R6 can limit the transient peak value of the current at its control end to prevent excessive current from damaging the first electronic switch Q1. Furthermore, the fourth resistor R6 acts as a voltage divider for the control end of the first electronic switch Q1. By adjusting the resistance value of the fourth resistor R6, the voltage at the control end of the first electronic switch Q1 can be adjusted, thereby adjusting the operating state of the first electronic switch Q1. Furthermore, the fourth resistor R6 can reduce the impact of external interference on the voltage at the control end of the first electronic switch Q1, thereby enhancing the anti-interference capability of the first electronic switch Q1.

[0042] like Figure 3 As shown, in one embodiment, the second atomizer temperature control circuit further includes a fifth resistor R7. The first end of the fifth resistor R7 is connected to the first end of the second electronic switch Q2, and the second end of the fifth resistor R7 is connected to the control end of the second electronic switch Q2. In this embodiment, when the voltage at the control end of the second electronic switch Q2 changes, the fifth resistor R7 can limit the transient peak value of the current at its control end to prevent excessive current from damaging the second electronic switch Q2. Furthermore, the fifth resistor R7 acts as a voltage divider for the control end of the second electronic switch Q2. By adjusting the resistance value of the fifth resistor R7, the voltage at the control end of the second electronic switch Q2 can be adjusted, thereby adjusting the operating state of the second electronic switch Q2. Furthermore, the fifth resistor R7 can reduce the impact of external interference on the voltage at the control end of the second electronic switch Q2, thereby enhancing the anti-interference capability of the second electronic switch Q2.

[0043] like Figure 3 As shown, in one embodiment, the third atomizer temperature control circuit further includes a sixth resistor R8. The first end of the sixth resistor R8 is connected to the first end of the third electronic switch Q3, and the second end of the sixth resistor R8 is connected to the control end of the third electronic switch Q3. In this embodiment, when the voltage at the control end of the third electronic switch Q3 changes, the sixth resistor R8 can limit the transient peak value of the current at its control end to prevent excessive current from damaging the third electronic switch Q3. Furthermore, the sixth resistor R8 acts as a voltage divider for the control end of the third electronic switch Q3. By adjusting the resistance value of the sixth resistor R8, the voltage at the control end of the third electronic switch Q3 can be adjusted, thereby adjusting the operating state of the third electronic switch Q3. Furthermore, the sixth resistor R8 can reduce the impact of external interference on the voltage at the control end of the third electronic switch Q3, thereby enhancing the anti-interference capability of the third electronic switch Q3.

[0044] like Figure 2 As shown, in one embodiment, the main control circuit 100 further includes a seventh resistor R9. The first end of the seventh resistor R9 is connected to the battery power supply terminal VBAT, and the second end of the seventh resistor R9 is connected to the power input terminal of the microcontroller U1. In this embodiment, the seventh resistor R9 is connected in series between the battery power supply terminal VBAT and the power input terminal of the microcontroller U1. Since the basic characteristic of resistance is to hinder the flow of current, the seventh resistor R9 can limit the current flowing from the battery power supply terminal VBAT to the microcontroller U1, thereby preventing damage to the power input terminal of the microcontroller U1 due to excessive current. Furthermore, when the current output from the battery power supply terminal VBAT is unstable, the seventh resistor R9 can effectively reduce the impact of transient large currents on the microcontroller U1, thereby improving the stability of the microcontroller U1.

[0045] like Figure 2As shown, in one embodiment, the main control circuit 100 further includes a first capacitor C4, a first end of the first capacitor C4 being connected to the power input terminal of the microcontroller U1, and a second end of the first capacitor C4 being grounded. In this embodiment, since the capacitor has the ability to store charge, when there is a voltage difference between the two ends of the first capacitor C4, the first capacitor C4 will accumulate charge between its two plates until a balance state is reached. In addition, during the charging process of the capacitor, high-frequency noise and ripple in the circuit can be effectively filtered out, thereby allowing DC components and low-frequency AC signals to pass through the circuit. When the first capacitor C4 is fully charged, it plays a role in smoothing voltage fluctuations in the circuit. At the same time, when the microcontroller U1 requires additional current, it can provide the necessary transient current to prevent the voltage at the power input terminal of the microcontroller U1 from changing due to transient loads, thereby ensuring that the microcontroller U1 can operate stably.

[0046] like Figure 4 As shown, in one embodiment, the charging circuit 300 includes a charging control chip U2 and a second capacitor C2. The first end of the second capacitor C2 is connected to the battery monitoring terminal and the battery power supply terminal VBAT of the charging control chip U2, and the second end of the second capacitor C2 is grounded. In this embodiment, the second capacitor C2 plays a role in smoothing voltage fluctuations in the circuit. When the charging control chip U2 requires additional current, it can provide the necessary transient current to prevent the voltage at the power input terminal of the charging control chip U2 from changing due to transient loads, thereby ensuring that the charging control chip U2 can operate stably. In addition, the capacitor can also play a role in protecting the circuit. When the battery power supply terminal VBAT is suddenly disconnected, the second capacitor C2 can temporarily maintain a certain voltage level to prevent the charging control chip U2 from being damaged by the sudden voltage change, thereby improving the stability of the charging control chip U2.

[0047] like Figure 4 As shown, in one embodiment, the charging circuit 300 further includes a third capacitor C1, a first end of the third capacitor C1 being connected to the power input terminal of the charging control chip U2, and a second end of the third capacitor C1 being grounded. In this embodiment, since the capacitor has the ability to store charge, when there is a voltage difference between the two ends of the third capacitor C1, the third capacitor C1 will accumulate charge between its two plates until a state of equilibrium is reached; the third capacitor C1 can filter out high-frequency noise and ripple in the circuit and smooth out voltage fluctuations in the circuit. At the same time, when the charging control chip U2 requires additional current, it can provide the necessary transient current to prevent the voltage at the power input terminal of the charging control chip U2 from changing due to transient loads, thereby ensuring that the charging control chip U2 can operate stably.

[0048] like Figure 4As shown, in one embodiment, the charging circuit 300 further includes an eighth resistor R3, a first end of the eighth resistor R3 being connected to the programming control terminal PROG of the charging control chip U2, and a second end of the eighth resistor R3 being grounded. In this embodiment, since the charging control chip U2 can monitor and provide feedback on its output charging current via the programming control terminal PROG, and by adjusting the resistance value of the eighth resistor R3, the charging current output by the charging control chip U2 can be flexibly adjusted to suit the needs of different batteries or application scenarios. This improves the flexibility of the charging control chip U2.

[0049] An electronic atomizer includes multiple atomization control circuits 10 as described above. In this embodiment, when a user needs to select a different flavor or temperature combination, a microcontroller U1 receives a user instruction via a key switch K1 and controls the level signals output by the first switch signal terminal Switch, the second switch signal terminal Switch2, and the third switch signal terminal Switch3 to activate or deactivate the corresponding atomization chamber. Specifically, when the user needs to turn on the first atomization temperature control circuit, the first switch signal terminal Switch outputs a high-level signal to the control terminal of the first electronic switch tube Q1. The voltage at the control terminal of the first electronic switch tube Q1 will be greater than its threshold voltage, causing the first electronic switch tube Q1 to conduct. After passing through the first electronic switch tube Q1, current flows to the positive terminal F1+ of the heating wire of the first atomization temperature control circuit, thereby energizing and heating the heating wire in the first atomization temperature control circuit, thereby causing the e-liquid material in the atomization chamber controlled by the first atomization temperature control circuit to be heated and atomized. Similarly, when the user needs to turn on the second atomization temperature control circuit and the third atomization temperature control circuit, the second switch signal terminal Switch2 and the third switch signal terminal Switch3 respectively output high-level signals to the control terminals of the second electronic switch tube Q2 and the third electronic switch tube Q3, so that the second electronic switch tube Q2 and the third electronic switch tube Q3 are turned on, thereby allowing the second atomization temperature control circuit and the third atomization temperature control circuit to respectively control the heating wires of their atomization chambers to heat and atomize the e-liquid material. On the other hand, when the first electronic switch tube Q1 is turned on, current also flows through the first resistor R11. Since the second end of the first resistor R11 is connected to the first voltage sampling terminal ADC1 of the microcontroller U1, the microcontroller U1 can obtain the voltage value of the first resistor R11 through the first voltage sampling terminal ADC1, and calculate the operating temperature and resistance value of the first atomization temperature control circuit heating wire according to Ohm's law and TCR; wherein, the relative change rate of resistance with temperature TCR = (R2-R1) / (R1*ΔT), R1 is the resistance value (Ω) when the temperature is T1, R2 is the resistance value (Ω) when the temperature is T2, ΔT is the temperature change, that is, T2-T1 (℃), so that precise control of the atomization flavor can be achieved through calculation by the microcontroller U1. Similarly, when the second electronic switch tube Q2 and the third electronic switch tube Q3 are turned on, the current also flows through the second resistor R12 and the third resistor R13. Since the second ends of the second resistor R12 and the third resistor R13 are respectively connected to the second voltage sampling terminal ADC2 and the third voltage sampling terminal ADC3 of the microcontroller U1, the microcontroller U1 can obtain the voltage values ​​of the second resistor R12 and the third resistor R13 through the second voltage sampling terminal ADC2 and the third voltage sampling terminal ADC3, and calculate the operating temperature and resistance value of the heating wire according to Ohm's law and TCR. Then, the microcontroller U1 controls the conduction state of the three electronic switch tubes to change the current flowing through the heating wire of each atomization chamber respectively, thereby achieving precise control of the flavors of the three atomization chambers at the same time.Specifically, according to actual needs, the user can send instructions to the microcontroller U1 through the button switch K1 to control the heating wire temperature and switch status of the three atomization chambers respectively, so that a single atomization chamber or a combination of two atomization chambers can be operated, or all three atomization chambers can be operated at the same time to achieve a combination of one or more atomization flavors. In addition, the temperature curve of the heating wire of each atomization chamber can be accurately controlled by the microcontroller to control the concentration and taste of the atomization flavor.

[0050] Compared with the prior art, the present disclosure has at least the following advantages:

[0051] 1. The above-mentioned multiple atomization control circuits 10 respectively control the on-off states of the first electronic switch tube Q1, the second electronic switch tube Q2 and the third electronic switch tube Q3 through the first switch signal terminal Switch, the second switch signal terminal Switch2 and the third switch signal terminal Switch3 of the microcontroller U1 to control the temperature and switch state of the heating wires of multiple atomization chambers, thereby achieving a combination effect of one or more atomization flavors; and by controlling the conduction state of the three electronic switch tubes respectively, the current flowing through the heating wire of each atomization chamber is changed, thereby controlling the temperature curve of each heating wire, and further precisely controlling the atomization flavor effect.

[0052] The above-described embodiments merely represent several implementation methods of the present disclosure. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the scope of the present disclosure, all of which fall within the scope of protection of the present disclosure. Therefore, the scope of protection of the disclosed patent shall be determined by the appended claims.

Claims

1. A control circuit for multiple atomization chambers, characterized in that: It includes a main control circuit, an atomization chamber control circuit, and a charging circuit. The charging circuit is used to control the charging process of the battery. The main control circuit includes a microcontroller and a key switch. The first end of the key switch is connected to the switch control signal end of the microcontroller, and the second end of the key switch is grounded. The atomization chamber control circuit includes a first atomization temperature control circuit, a second atomization temperature control circuit, and a third atomization temperature control circuit. The first atomization temperature control circuit includes a first electronic switch tube and a first resistor. The control end of the first electronic switch tube is connected to the first switch signal end of the microcontroller. The first end of the first electronic switch tube is used to connect to the battery power supply end. The second end of the first electronic switch tube is connected to the first end of the first resistor. The second end of the first resistor is connected to the first voltage sampling end of the microcontroller. The second end of the first electronic switch tube is also used to connect to the positive end of the heating wire of the first atomization temperature control circuit. The second atomization temperature control circuit includes a second electronic switch tube and a second resistor. The control end of the second electronic switch tube is connected to the second switch signal end of the microcontroller. The first end of the second electronic switch tube is used to be connected to the battery power supply end. The second end of the second electronic switch tube is connected to the first end of the second resistor. The second end of the second resistor is connected to the second voltage sampling end of the microcontroller. The second end of the second electronic switch tube is also used to be connected to the positive end of the heating wire of the second atomization temperature control circuit. The third atomization temperature control circuit includes a third electronic switch tube and a third resistor. The control end of the third electronic switch tube is connected to the third switch signal end of the microcontroller. The first end of the third electronic switch tube is used to be connected to the battery power supply end. The second end of the third electronic switch tube is connected to the first end of the third resistor. The second end of the third resistor is connected to the third voltage sampling end of the microcontroller. The second end of the third electronic switch tube is also used to be connected to the positive end of the heating wire of the third atomization temperature control circuit. The first atomizing temperature control circuit, the first atomizing temperature control circuit, and the negative end of the heating wire of the first atomizing temperature control circuit are all connected to the ground end.

2. The multiple atomization chamber control circuit according to claim 1, characterized in that: The first atomization temperature control circuit further includes a fourth resistor, a first end of the fourth resistor is connected to the first end of the first electronic switch tube, and a second end of the fourth resistor is connected to the control end of the first electronic switch tube.

3. The multiple atomization chamber control circuit according to claim 1, characterized in that: The second atomization temperature control circuit further includes a fifth resistor, a first end of the fifth resistor being connected to the first end of the second electronic switch tube, and a second end of the fifth resistor being connected to the control end of the second electronic switch tube.

4. The multiple atomization chamber control circuit according to claim 1, characterized in that: The third atomization temperature control circuit further includes a sixth resistor, a first end of the sixth resistor being connected to the first end of the third electronic switch tube, and a second end of the sixth resistor being connected to the control end of the third electronic switch tube.

5. The multiple atomization chamber control circuit according to claim 1, characterized in that: The main control circuit further includes a seventh resistor, a first end of the seventh resistor is used to be connected to the battery power supply end, and a second end of the seventh resistor is connected to the power input end of the microcontroller.

6. The multiple atomization chamber control circuit according to claim 5, characterized in that: The main control circuit further includes a first capacitor, a first end of the first capacitor is connected to the power input end of the microcontroller, and a second end of the first capacitor is grounded.

7. The multiple atomization chamber control circuit according to claim 1, characterized in that: The charging circuit includes a charging control chip and a second capacitor, a first end of the second capacitor is connected to a battery monitoring terminal and a battery power supply terminal of the charging control chip, and a second end of the second capacitor is grounded.

8. The multiple atomization chamber control circuit according to claim 7, characterized in that: The charging circuit further includes a third capacitor, a first end of the third capacitor is connected to the power input end of the charging control chip, and a second end of the third capacitor is grounded.

9. The multiple atomization chamber control circuit according to claim 7, characterized in that: The charging circuit further includes an eighth resistor, a first end of the eighth resistor is connected to the programming control end of the charging control chip, and a second end of the eighth resistor is grounded.

10. An electronic atomizer, characterized in that: It comprises a plurality of atomization chamber control circuits as described in any one of claims 1 to 9 above.

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