Low-voltage power supply disconnection control circuit of gas stove fire turning-off device

Abstract

The embodiment of the utility model discloses a low-voltage power supply disconnection control circuit of a gas stove fire turning-off device, which comprises a control module, a motor driving module, a power supply module, a position switch module and a comparison circuit module, and the power supply module, the motor driving module, the position switch module and the comparison circuit module are all electrically connected with the control module; a timer is arranged in the control module; the control module is used for comparing the voltage value signal with a set voltage value, and if the voltage value signal is not higher than the set voltage value, the control module controls the power module to cut off power supply. According to the embodiment of the utility model, the comparison circuit module is arranged to detect the voltage of the power supply, and when the detected voltage value is not higher than the set voltage value, the control module controls the power supply module to cut off power supply. The function is helpful for avoiding the condition of unstable operation of equipment in a low-voltage environment, and is helpful for improving the use safety.

Description

Technical Field

[0001] The embodiment of the utility model relates to the technical field of gas stoves, and in particular to a low-voltage power supply disconnection control circuit of a gas stove flameout device. Background Art

[0002] When cooking on a gas stove, people often forget to turn it off in time. This presents certain drawbacks and safety hazards. On the one hand, prolonged cooking can cause food to become overcooked or burn dry. On the other hand, it can easily lead to fires and other dangerous situations. Some relatively high-end gas stoves now have automatic shutoff features, and some are configured to do so through time. However, even with these features, there's still the possibility that low battery power could cause the electric drive mechanism to run out of power. Currently, the system lacks an effective way to alert users, leading to users ignoring the power shortage and continuing to use the device, potentially leading to accidents.

[0003] Existing technology, automatic shutoff timers or gas stoves with timer functions, use indicator lights or signal marker lights to indicate low battery levels. However, these devices are often used in kitchens with insufficient lighting, and due to user habits, low-battery warnings are often ignored, leading users to forget to change the batteries and continue using the device, resulting in serious consequences. Some gas stoves with timer functions provide reminders by failing to ignite, but many people assume that the failure to ignite is a problem with the gas stove's ignition head, not a low battery. They then use an external fire source to ignite the gas stove and continue using the gas stove's automatic timer shutoff function, igniting the fact that the timer shutoff mechanism is underpowered and unable to shut off the flame, leading to serious consequences. Therefore, designing a method that can provide efficient reminders has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] The embodiment of the utility model provides a low-voltage power supply disconnection control circuit of a gas stove flameout device, which can avoid dangerous use caused by insufficient battery power.

[0005] In a first aspect, an embodiment of the present invention provides a low-voltage power supply disconnection control circuit for a gas stove flameout device, comprising a control module, a motor drive module, a power supply module, a position switch module, and a comparison circuit module, wherein the control module has an internal timer, and the power supply module, the motor drive module, the position switch module, and the comparison circuit module are all electrically connected to the control module;

[0006] The timer is used to send a flame-off signal to the control module to generate a motor drive signal when detecting that the flame-off time point has been reached. The motor drive module is used to control the motor to drive the gas stove knob to rotate according to the received motor drive signal. The position switch module is used to detect that the gas stove knob has reached a set position and send a position signal to the control module;

[0007] The comparison circuit module is used to detect the voltage value signal at both ends of the power supply module and transmit the detected voltage value signal to the control module. The control module is used to compare the voltage value signal with the set voltage value. If the voltage value signal is not higher than the set voltage value, the power supply module is controlled to disconnect the power supply.

[0008] As an optional implementation, in the first aspect of the embodiment of the utility model, it also includes a key switch electrically connected to the control module, and the key switch is used to control the working state of the fire-off reminder control device or to adjust the time signal configured in the timing module.

[0009] As an optional implementation, in the first aspect of the embodiment of the present utility model, it further includes a display screen electrically connected to the control module, and the display screen is used to display various status signals.

[0010] As an optional implementation, in the first aspect of the embodiment of the utility model, it also includes an alarm module electrically connected to the control module, and the alarm module is a buzzer, which is used to work when the voltage of the power module is low to remind the user.

[0011] As an optional implementation, in the first aspect of the embodiment of the present utility model, the buzzer includes a transistor Q1, a buzzer LS1, a diode D2, a resistor R5, and a resistor R11;

[0012] The base of the transistor Q1 is electrically connected to one end of the resistor R5 and one end of the resistor R11 respectively. The other end of the resistor R5 is electrically connected to the control module. The emitter of the transistor Q1 and the other end of the resistor R11 are both grounded. The collector of the transistor Q1 is connected to the positive electrode of the diode D2 and the two ends of the buzzer LS1. The negative electrode of the diode D2 and the one end of the buzzer LS1 are both connected to the power supply end of the motor.

[0013] As an optional implementation manner, in the first aspect of the embodiment of the present utility model, if the voltage value signal is not higher than the set voltage value, controlling the disconnected power supply module to supply power includes:

[0014] If the voltage value signal is not higher than the set voltage value, the buzzer is controlled to be silent after the alarm sounds, the display screen turns off after displaying specific content, the key switch becomes invalid, and the power supply of the entire system is turned off.

[0015] As an optional implementation, in the first aspect of the embodiment of the present utility model, the power supply module includes a voltage stabilizing chip U1, a diode D1, a diode T1, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C11, a transistor Q2 and a resistor R6;

[0016] The input end of the voltage stabilizing chip U1 is electrically connected to one end of the capacitor C2, the motor power supply end, the cathode of the diode T1, and the emitter of the transistor Q2, respectively. The ground end of the voltage stabilizing chip U1 is grounded, and the ground end of the voltage stabilizing chip U1 is electrically connected to the other end of the capacitor C2, the cathode of the diode T1, one end of the capacitor C3, one end of the capacitor C1, and one end of the capacitor C11, respectively. The output end of the voltage stabilizing chip U1 is connected to the other end of the capacitor C3, the anode of the diode D1, and the 3.3V voltage end, respectively; the cathode of the diode D1 is electrically connected to the other end of the capacitor C1, the other end of the capacitor C11, and the power supply end, respectively; the base of the transistor Q2 is grounded through the resistor R6, and the collector of the transistor Q2 is connected to a power supply end.

[0017] As an optional implementation, in the first aspect of the embodiment of the present utility model, the comparison circuit module includes a resistor R2, a resistor R3, a resistor R4, a capacitor C9 and a transistor Q3;

[0018] The motor power supply end is connected to one end of the resistor R3, one end of the capacitor C9 and the voltage detection end through the resistor R2. The other end of the resistor R3 is electrically connected to the emitter of the transistor Q3. The base of the transistor Q3 is connected to the collector of the transistor Q3, the other end of the capacitor C9 and the ground end through the resistor R4. The voltage detection end of the comparison circuit module is connected to the voltage detection end of the control module.

[0019] As an optional implementation, in the first aspect of the embodiment of the present utility model, the motor driving module includes a driving chip U3, a resistor R9, a fuse F1, a capacitor C13, a capacitor C14 and an interface P1;

[0020] The first input end and the second input end of the driving chip U3 are respectively connected to the corresponding ports of the control module, the first output end and the second output end of the driving chip U3 are connected to the corresponding interface P1, and the first output end and the second output end of the driving chip U3 are respectively connected to the two ends of the capacitor C13, the ground end of the driving chip U3 is grounded, and the power supply end of the driving chip U3 is respectively connected to one end of the fuse F1, one end of the capacitor C14 and one end of the resistor R9, and the other end of the resistor R9 and the other end of the fuse F1 are both connected to the power supply end of the motor.

[0021] This embodiment of the utility model utilizes a comparator circuit module to detect power supply voltage. This comparator circuit module detects the voltage across the power module and transmits the signal to the control module for comparison. If the detected voltage is not higher than the set voltage, the control module disconnects the power supply. This function helps prevent unstable operation of the device in low-voltage environments, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a circuit structure block diagram of a low-voltage power supply disconnection control circuit of a gas stove flameout device provided by an embodiment of the present utility model;

[0023] Figure 2 This is a circuit diagram of a control module provided by an embodiment of the present utility model;

[0024] Figure 3 This is a circuit diagram of a power module provided by an embodiment of the present utility model;

[0025] Figure 4 This is a circuit schematic diagram of a comparison circuit module provided by an embodiment of the present utility model;

[0026] Figure 5 This is a circuit diagram of a buzzer module provided by an embodiment of the present utility model;

[0027] Figure 6 This is a circuit diagram of a motor drive module provided by an embodiment of the present utility model;

[0028] Figure 7 This is a circuit diagram of a key switch provided by an embodiment of the utility model;

[0029] Figure 8 This is a circuit diagram of a display screen provided by an embodiment of the present utility model;

[0030] Figure 9 This is a circuit schematic diagram of a position switch module provided in an embodiment of the present utility model. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the present invention clearer, the specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It should be noted that, under the premise of no conflict, the various embodiments described below or the various technical features can be arbitrarily combined to form a new embodiment. Except where otherwise specified, the materials and equipment used in this embodiment can be purchased from the market. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar numbers throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and cannot be understood as limiting this application.

[0032] In the description of this application, it should be understood that the terms "upper," "lower," "front," "back," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting this application. In the description of this application, "plurality" means two or more, unless otherwise specifically specified.

[0033] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "connected," "connected," and "connected" should be understood in a broad sense. For example, they may refer to a fixed connection, a connection through an intermediary medium, internal communication between two components, or an interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0034] The terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a particular order or sequential sequence. In addition, the terms "including," "comprising," and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to the process, method, product, or apparatus.

[0035] like Figures 1 to 9 As shown, the embodiment of the present invention provides a low-voltage power supply disconnection control circuit for a gas stove flameout device, comprising a timing module, a control module, a motor drive module, a power module, a position switch module, and a comparison circuit module, wherein the timing module, the power module, the motor drive module, the position switch module, and the comparison circuit module are all electrically connected to the control module;

[0036] The timing module is used to send a flame-off signal to the control module to generate a motor drive signal when detecting that the flame-off time point has been reached. The motor drive module is used to control the motor to drive the gas stove knob to rotate according to the received motor drive signal. The position switch module is used to detect that the gas stove knob has reached a set position and send a position signal to the control module;

[0037] The comparison circuit module is used to detect the voltage value signal at both ends of the power supply module and transmit the detected voltage value signal to the control module. The control module is used to compare the voltage value signal with the set voltage value. If the voltage value signal is not higher than the set voltage value, the power supply module is controlled to disconnect the power supply.

[0038] The solution of this embodiment of the utility model, through the setting of the timing module, allows the user to automatically receive a flame-off signal at a preset time. The control module generates a motor drive signal, which drives the motor to rotate and drives the gas stove knob to automatically turn off the flame. This function reduces the safety risks caused by users forgetting to turn off the flame, and improves the safety of kitchen use.

[0039] The position switch module detects whether the gas stove knob has been turned to the set position (i.e., the off position) and sends a position signal to the control module. This function ensures the accuracy and reliability of the off action and avoids the risk of gas leakage caused by the knob not being fully closed.

[0040] More preferably, it further comprises a key switch electrically connected to the control module, wherein the key switch is used to control the working state of the flameout reminder control device or to adjust the time signal configured in the timing module.

[0041] The addition of a push-button switch allows users to directly control the operating status of the flameout reminder control device through physical operation, such as starting, pausing, or shutting down the device. This direct interaction improves user convenience and intuitiveness, allowing users to flexibly adjust the device's operating mode according to their needs. The push-button switch also allows users to conveniently adjust the time signal configured in the timing module. This means that users can customize the flameout time based on their cooking habits and ingredient requirements, achieving more personalized cooking control. This flexibility not only enhances the user's cooking experience, but also increases the practicality and applicability of the device.

[0042] More preferably, it also includes a display screen electrically connected to the control module, and the display screen is used to display various status signals. The display screen can also serve as a platform for personalization and expansion. Users can set personalized interfaces and display content on the display screen according to their needs and preferences, such as cooking countdown, temperature display, heat adjustment, etc. This personalized customization function not only improves the practicality and applicability of the device, but also improves the user experience and convenience of the device.

[0043] More preferably, the system further comprises an alarm module electrically connected to the control module, wherein the alarm module is a buzzer, and the buzzer is used to operate when the voltage of the power module is low to remind the user.

[0044] When the power module voltage drops below a preset safety threshold, a buzzer immediately sounds an audible alarm to alert the user. This timely warning helps users promptly identify and resolve power supply issues, preventing unexpected shutdowns or damage to the device due to insufficient voltage, and ensuring a continuous and safe cooking process. The buzzer's audible warning makes the user more intuitively aware of the risk of low power module voltage, thereby enhancing awareness of safe device use. This heightened safety awareness helps users be more cautious and careful during use, reducing safety hazards caused by improper operation or negligence. The presence of the alarm module enables the device to respond quickly to power anomalies, prompting the user to intervene through an audible alarm. This proactive monitoring and alarm mechanism improves the device's reliability and stability, ensuring its normal operation in various complex environments.

[0045] More preferably, Figure 5 As shown, the buzzer includes a transistor Q1, a buzzer LS1, a diode D2, a resistor R5, and a resistor R11;

[0046] The base of the transistor Q1 is electrically connected to one end of the resistor R5 and one end of the resistor R11 respectively. The other end of the resistor R5 is electrically connected to the control module. The emitter of the transistor Q1 and the other end of the resistor R11 are both grounded. The collector of the transistor Q1 is connected to the positive electrode of the diode D2 and the two ends of the buzzer LS1. The negative electrode of the diode D2 and the one end of the buzzer LS1 are both connected to the power supply end of the motor.

[0047] When the control module (such as a control chip) detects low voltage in the power module or other conditions requiring an alarm, it outputs a high or low control signal to the other end of resistor R5. When the control signal is high, current flows through resistor R5 to the base of transistor Q1, turning on transistor Q1. At this point, the resistance between the collector and emitter of transistor Q1 decreases, allowing current to flow through buzzer LS1 and diode D2, completing a loop. When the control signal is low, the base current of transistor Q1 is zero or very low, insufficient to turn on the transistor. At this point, buzzer LS1 does not operate.

[0048] More preferably, if the voltage value signal is not higher than the set voltage value, controlling the disconnected power supply module to supply power includes:

[0049] If the voltage value signal is not higher than the set voltage value, the buzzer is controlled to be silent after the alarm sounds, the display screen turns off after displaying specific content, the key switch becomes invalid, and the power supply of the entire system is turned off.

[0050] The embodiment of the utility model effectively prevents system anomalies or damage caused by insufficient power supply through timely alarm, display of prompt information and shutdown of system power supply, thereby protecting the safety of equipment and users. When the power supply is low, the system power supply is shut down in a timely manner to avoid unnecessary energy consumption, which meets the requirements of energy conservation and environmental protection. Although the system will eventually shut down the power supply, sufficient prompt information is provided through the buzzer and display before shutting down, so that users can understand the cause of the problem and take appropriate measures, thereby improving the user experience. By preventing the failure of the key switch and shutting down the system power supply, misoperation and system crashes that may occur when the power supply is insufficient are avoided, thereby improving the stability and reliability of the system.

[0051] More preferably, Figure 3 As shown, the power supply module includes a voltage stabilizing chip U1, a diode D1, a diode T1, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C11, a transistor Q2 and a resistor R6;

[0052] The input end of the voltage stabilizing chip U1 is electrically connected to one end of the capacitor C2, the motor power supply end, the cathode of the diode T1, and the emitter of the transistor Q2, respectively. The ground end of the voltage stabilizing chip U1 is grounded, and the ground end of the voltage stabilizing chip U1 is electrically connected to the other end of the capacitor C2, the cathode of the diode T1, one end of the capacitor C3, one end of the capacitor C1, and one end of the capacitor C11, respectively. The output end of the voltage stabilizing chip U1 is connected to the other end of the capacitor C3, the anode of the diode D1, and the 3.3V voltage end, respectively; the cathode of the diode D1 is electrically connected to the other end of the capacitor C1, the other end of the capacitor C11, and the power supply end, respectively; the base of the transistor Q2 is grounded through the resistor R6, and the collector of the transistor Q2 is connected to a power supply end.

[0053] In this embodiment of the utility model, the power module converts unstable input voltage into a stable output voltage through voltage regulator chip U1, providing a reliable power supply for other circuit modules. Diode D1, acting as a reverse protection diode, effectively prevents damage to voltage regulator chip U1 and other circuit components when the input power supply experiences a reverse voltage. Filter capacitors such as capacitors C2, C11, C3, and C1 smooth out fluctuations in input and output voltages, reducing noise interference and improving power quality.

[0054] More preferably, Figure 4 As shown, the comparison circuit module includes a resistor R2, a resistor R3, a resistor R4, a capacitor C9 and a transistor Q3;

[0055] The motor power supply end is connected to one end of the resistor R3, one end of the capacitor C9 and the voltage detection end through the resistor R2. The other end of the resistor R3 is electrically connected to the emitter of the transistor Q3. The base of the transistor Q3 is connected to the collector of the transistor Q3, the other end of the capacitor C9 and the ground end through the resistor R4. The voltage detection end of the comparison circuit module is connected to the voltage detection end of the control module.

[0056] When the voltage at the motor power supply terminal is abnormal (e.g., too low), the comparison circuit module promptly outputs a signal to the control module, triggering protection mechanisms (such as alarms and power outages) to protect the equipment and users. Through rational circuit design and component selection, the comparison circuit module exhibits excellent stability and reliability, enabling it to operate normally in a variety of complex environments. Using simple circuit components to construct the comparison circuit module reduces costs while ensuring functional implementation.

[0057] More preferably, Figure 6 As shown, the motor drive module includes a drive chip U3, a resistor R9, a fuse F1, a capacitor C13, a capacitor C14 and an interface P1;

[0058] The first input end and the second input end of the driving chip U3 are respectively connected to the corresponding ports of the control module, the first output end and the second output end of the driving chip U3 are connected to the corresponding interface P1, and the first output end and the second output end of the driving chip U3 are respectively connected to the two ends of the capacitor C13, the ground end of the driving chip U3 is grounded, and the power supply end of the driving chip U3 is respectively connected to one end of the fuse F1, one end of the capacitor C14 and one end of the resistor R9, and the other end of the resistor R9 and the other end of the fuse F1 are both connected to the power supply end of the motor.

[0059] Through driver chip U3, the motor driver module receives control signals from the control module and converts them into drive signals capable of operating the motor, achieving precise control of the motor. Fuse F1, as an overcurrent protection element, immediately blows when the motor's operating current exceeds the specified limit, disconnecting the power supply and protecting the circuit and motor from damage, thereby improving system safety and reliability. The addition of capacitors C13 and C14 effectively filters high-frequency noise from the drive signal and power supply voltage, improving signal stability and reliability and ensuring the proper operation of the motor driver module.

[0060] Specifically, in the control device provided by the embodiment of the present invention, when the timer reaches the flameout time point, the control chip sends an instruction to cause the motor to drive the gas stove knob to rotate. During the rotation process, the comparison circuit detects the voltage across the battery and feeds back the comparison result to the control chip. The chip controls the rotation of the motor so that the corresponding component reaches the position switch, and stimulates the position switch to feedback the status to the control chip. If the voltage across the battery detected by the detection switch is lower than the set value, the control chip controls the buzzer to beep and then mute, the display to display specific content and then turn off the screen, the key switch to become invalid, etc., and turns off the power supply to the entire system. As a result, the timer stops working completely and can only resume work after replacing the battery. The comparison circuit only works during the rotation of the motor system. The set value used to compare whether the battery voltage is high or low must be higher than the minimum voltage required to drive the motor system to rotate normally, so as to ensure that the motor system can still rotate normally at the voltage set value.

[0061] Through this technical means, the following technical effects are achieved: avoiding the situation where the battery is insufficient and the device cannot be turned off but is still in use; forcing the user to replace the battery, otherwise the device cannot be used.

[0062] This embodiment of the utility model utilizes a comparator circuit module to detect power supply voltage. This comparator circuit module detects the voltage across the power module and transmits the signal to the control module for comparison. If the detected voltage is not higher than the set voltage, the control module disconnects the power supply. This function helps prevent unstable operation of the device in low-voltage environments, thereby improving safety.

[0063] The above are merely preferred embodiments of the present invention and the technical principles employed. The present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions that are apparent to those skilled in the art will not depart from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the scope of the present invention. The scope of the present invention is determined by the scope of the claims.

Claims

1. A low voltage power supply disconnection control circuit for a gas stove flameout device, characterized in that: It includes a control module, a motor drive module, a power supply module, a position switch module and a comparison circuit module, wherein a timer is provided inside the control module, and the power supply module, the motor drive module, the position switch module and the comparison circuit module are all electrically connected to the control module; The timer is used to send a flame-off signal to the control module to generate a motor drive signal when detecting that the flame-off time point has been reached. The motor drive module is used to control the motor to drive the gas stove knob to rotate according to the received motor drive signal. The position switch module is used to detect that the gas stove knob has reached a set position and send a position signal to the control module; The comparison circuit module is used to detect the voltage value signal at both ends of the power supply module and transmit the detected voltage value signal to the control module. The control module is used to compare the voltage value signal with the set voltage value. If the voltage value signal is not higher than the set voltage value, the power supply module is controlled to disconnect the power supply.

2. The low-voltage power supply disconnection control circuit of the gas stove flameout device according to claim 1, characterized in that: It also includes a key switch electrically connected to the control module, and the key switch is used to control the working state of the fire-off reminder control device or to adjust the time signal configured in the timing module.

3. The low-voltage power supply cut-off control circuit of the gas stove flameout device according to claim 2, characterized in that: It also includes a display screen electrically connected to the control module, and the display screen is used to display various status signals.

4. The low-voltage power supply disconnection control circuit of the gas stove flameout device according to claim 3, characterized in that: It also includes an alarm module electrically connected to the control module. The alarm module is a buzzer. The buzzer is used to work when the voltage of the power module is low to remind the user.

5. The low-voltage power supply cut-off control circuit of the gas stove flameout device according to claim 4, characterized in that: The buzzer includes a transistor Q1, a buzzer LS1, a diode D2, a resistor R5, and a resistor R11; The base of the transistor Q1 is electrically connected to one end of the resistor R5 and one end of the resistor R11 respectively. The other end of the resistor R5 is electrically connected to the control module. The emitter of the transistor Q1 and the other end of the resistor R11 are both grounded. The collector of the transistor Q1 is connected to the positive electrode of the diode D2 and the two ends of the buzzer LS1. The negative electrode of the diode D2 and the one end of the buzzer LS1 are both connected to the power supply end of the motor.

6. The low-voltage power supply cut-off control circuit of the gas stove flameout device according to claim 4, characterized in that: If the voltage value signal is not higher than the set voltage value, controlling the disconnected power module to supply power includes: If the voltage value signal is not higher than the set voltage value, the buzzer is controlled to be silent after the alarm sounds, the display screen turns off after displaying specific content, the key switch becomes invalid, and the power supply of the entire system is turned off.

7. The low-voltage power supply disconnection control circuit of the gas stove flameout device according to any one of claims 1 to 6, characterized in that: The power supply module includes a voltage stabilizing chip U1, a diode D1, a diode T1, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C11, a transistor Q2 and a resistor R6; The input end of the voltage stabilizing chip U1 is electrically connected to one end of the capacitor C2, the motor power supply end, the cathode of the diode T1, and the emitter of the transistor Q2, respectively. The ground end of the voltage stabilizing chip U1 is grounded, and the ground end of the voltage stabilizing chip U1 is electrically connected to the other end of the capacitor C2, the cathode of the diode T1, one end of the capacitor C3, one end of the capacitor C1, and one end of the capacitor C11, respectively. The output end of the voltage stabilizing chip U1 is connected to the other end of the capacitor C3, the anode of the diode D1, and the 3.3V voltage end, respectively; the cathode of the diode D1 is electrically connected to the other end of the capacitor C1, the other end of the capacitor C11, and the power supply end, respectively; the base of the transistor Q2 is grounded through the resistor R6, and the collector of the transistor Q2 is connected to a power supply end.

8. The low-voltage power supply cut-off control circuit of the gas stove flameout device according to claim 7, characterized in that: The comparison circuit module includes a resistor R2, a resistor R3, a resistor R4, a capacitor C9 and a transistor Q3; The motor power supply end is connected to one end of the resistor R3, one end of the capacitor C9 and the voltage detection end through the resistor R2. The other end of the resistor R3 is electrically connected to the emitter of the transistor Q3. The base of the transistor Q3 is connected to the collector of the transistor Q3, the other end of the capacitor C9 and the ground end through the resistor R4. The voltage detection end of the comparison circuit module is connected to the voltage detection end of the control module.

9. The low-voltage power supply cut-off control circuit of the gas stove flameout device according to any one of claims 1 to 6, characterized in that: The motor drive module includes a drive chip U3, a resistor R9, a fuse F1, a capacitor C13, a capacitor C14 and an interface P1; The first input end and the second input end of the driving chip U3 are respectively connected to the corresponding ports of the control module, the first output end and the second output end of the driving chip U3 are connected to the corresponding interface P1, and the first output end and the second output end of the driving chip U3 are respectively connected to the two ends of the capacitor C13, the ground end of the driving chip U3 is grounded, and the power supply end of the driving chip U3 is respectively connected to one end of the fuse F1, one end of the capacitor C14 and one end of the resistor R9, and the other end of the resistor R9 and the other end of the fuse F1 are both connected to the power supply end of the motor.

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