Heating assembly with switches connected in parallel, liquid remaining amount control circuit and electronic device

Abstract

The invention provides a heating assembly with switches connected in parallel, the heating assembly is used for being detachably connected with a power supply control assembly, and the heating assembly comprises a liquid storage cavity used for storing liquid; the heating element has a working state and a non-working state, and the heating element is used for atomizing liquid to generate aerosol in the working state; a first heating contact and a second heating contact; the dry burning prevention switch is connected with the heating element in parallel; the liquid remaining amount detection module is connected with the control end of the dry-burning-resistant switch and used for determining whether a pre-dry-burning signal is generated or not, the pre-dry-burning signal is used for indicating that the liquid remaining amount is smaller than or equal to a first liquid threshold value, and the pre-dry-burning signal is used for enabling the dry-burning-resistant switch to be turned on; therefore, the heating element is short-circuited and stops working so as to be in a non-working state. The embodiment of the invention further provides a liquid surplus control circuit and an electronic device.

Description

Technical Field

[0001] This application relates to the field of electric heating technology, and in particular to a heating assembly with parallel switching, a liquid balance control circuit, and an electronic device. Background Technology

[0002] With the development of heated atomization technology, heated atomization electronic devices have emerged. These devices use electricity to heat and atomize liquids into aerosols for users to inhale. Examples of such electronic devices include medical electronic atomization devices and general electronic atomization devices. Examples of liquids include liquid medicines and e-liquids.

[0003] An existing electronic device includes a heating component and a power supply control component, which are detachably connected. The power supply control component includes a battery, a control unit, etc. The control unit is used to control whether the battery supplies power to the heating component. The heating component includes a liquid storage chamber and a heating element. The liquid storage chamber is used to store liquid, and the heating element is used to heat and atomize the liquid. When the liquid in the liquid storage chamber is low or depleted, the user can replace the heating component and continue using the device. If the user does not replace the heating component in time and continues to use the electronic device, the heating element will dry-burn due to the lack of liquid replenishment, producing a burnt smell and harmful substances. Inhalation of these substances will harm the user's health and also damage the electronic device.

[0004] To prevent the heating element from overheating, the following solution has been proposed: The heating component also includes a storage unit that stores information about the remaining usable time. The power supply control component also includes a timing unit. When the user uses the electronic device, the control unit retrieves the remaining usable time information from the storage unit, and the timing unit starts counting from 0. When the user stops using the device, the control unit subtracts the current timing duration from the remaining usable time information to obtain new remaining usable time information, and transmits this new remaining usable time information to the heating component to update the storage unit. When the power supply control component determines that the remaining usable time information is less than or equal to a preset duration, the control unit will prevent the battery from supplying power to the heating component, even if the user uses the electronic device, thus preventing the heating element from overheating and overheating.

[0005] The above solutions can effectively address the issue of dry burning of the heating element. However, the power supply control component and the heating component need to work together to achieve the anti-dry burning function. If the power supply control component lacks a corresponding anti-dry burning function, even if the heating component has a storage unit that stores information on the remaining vaping time, the electronic atomizing device cannot prevent dry burning because the remaining vaping time information cannot be updated in time. The control unit cannot control the battery to stop supplying power to the heating component based on the remaining vaping time information. This limits the application scenarios of the existing anti-dry burning function and prevents its large-scale use, especially since older electronic devices do not have anti-dry burning functionality. Conversely, even if the power supply control component has the corresponding anti-dry burning function, if the heating component does not have a storage unit that stores information on the remaining vaping time, the anti-dry burning function still cannot be achieved. Moreover, the remaining vaping time information in the existing heating component needs to be updated by the power supply control component after each vaping session. Since the power supply control component and the heating component are detachably connected, information transmission failure may occur before or during the update process, leading to errors in the remaining vaping time information and a certain probability of still experiencing dry burning. Additionally, the power supply control component and the heating component may not be from the same brand. Even if they are from the same brand, they may be different models. Since the timing unit is located in the power supply control component, while the time the liquid in the heating component can be used for testing may be a different timing device. The timing unit in the power supply control component and the timing device used in the test may differ, and the timing method may also differ, which may cause inaccurate timing. This could result in the control unit determining that there is no liquid left in the heating component, leading to liquid waste, or it could result in the control unit determining that there is liquid left in the heating component, leading to the problem of dry burning. Summary of the Invention

[0006] The technical problem to be solved by the embodiments of this application is to provide a heating component with parallel switching, a liquid remaining level control circuit, and an electronic device, which can prevent the heating component from dry burning, thus addressing the shortcomings of the prior art.

[0007] To solve the above-mentioned technical problems, the first aspect of this application provides a heating assembly with parallel switches, the heating assembly being detachably connected to a power supply control assembly, the heating assembly including: a liquid storage chamber for storing liquid;

[0008] The heating element has a working state and a non-working state. In the working state, it is used to atomize liquid to generate aerosol.

[0009] The first heating contact and the second heating contact are used for contact-type electrical connection with the power supply control component. The first heating contact is electrically connected to the first end of the heating element, and the second heating contact is electrically connected to the second end of the heating element.

[0010] An anti-dry-burning switch is connected in parallel with the heating element;

[0011] A liquid remaining quantity detection module is connected to the control terminal of the anti-dry-burning switch. The liquid remaining quantity detection module is used to determine whether a pre-dry-burning signal is generated. The pre-dry-burning signal is used to indicate that the liquid remaining quantity is less than or equal to a first liquid threshold. The pre-dry-burning signal is used to turn on the anti-dry-burning switch so that the heating element is short-circuited and stops working to be in a non-working state.

[0012] Optionally, when the heating element is in operation and the dry-burning logic control unit does not generate a pre-dry-burning signal, the anti-dry-burning switch remains open.

[0013] Optionally, the liquid remaining quantity detection module includes:

[0014] A storage unit for storing current time information associated with the remaining liquid level;

[0015] The first timing unit is used to perform a first timing of at least a portion of the duration during which the heating element is in operation;

[0016] The dry-burning logic control unit is connected to the storage unit and the first timing unit, and is also connected to the control terminal of the anti-dry-burning switch. The dry-burning logic control unit determines whether to generate a pre-dry-burning signal based on the current time information and the duration of the first timing.

[0017] Optionally, the dry-burning logic control unit calculates the current time information and the duration of the first timer, and compares the calculation result with a preset first duration threshold. The dry-burning logic control unit determines whether to generate a pre-dry-burning signal based on the comparison result, wherein the first duration threshold corresponds to the first liquid threshold.

[0018] Optionally, the storage unit or the dry-burning logic control unit stores an accumulated duration threshold. The first duration threshold shown is the accumulated duration threshold. The dry-burning logic control unit includes an accumulation calculation subunit and a first dry-burning judgment subunit. The accumulation calculation subunit is connected to the first timing unit and the storage unit. One input terminal of the first dry-burning judgment subunit is connected to the accumulation calculation subunit, and its other input terminal is connected to the accumulated duration threshold. The accumulation calculation subunit receives the current time information and the duration of the first timing unit and performs an addition calculation. The first dry-burning judgment subunit receives the calculation result from the accumulation calculation subunit and compares it with the accumulated duration threshold. When the calculation result is greater than or equal to the accumulated duration threshold, a pre-dry-burning signal is determined to be generated; or...

[0019] The storage unit or the logic control unit stores the cumulative duration threshold. The first duration threshold shown is the cumulative duration threshold. The logic control unit includes a cumulative calculation subunit and a second dry burning judgment subunit. The cumulative calculation subunit is connected to the first timing unit and the storage unit. One input terminal of the second dry burning judgment subunit is connected to the cumulative calculation subunit, and the other input terminal is connected to the cumulative duration threshold. The cumulative calculation subunit receives the current time information and the duration of the first timing and performs a subtraction calculation. The second dry burning judgment subunit receives the calculation result of the cumulative calculation subunit and compares it with the cumulative duration threshold. When the calculation result is less than or equal to the cumulative duration threshold, a pre-dry burning signal is determined to be generated.

[0020] Optionally, the anti-dry-burning switch includes an NMOS transistor, a PMOS transistor, a field-effect transistor, or a bipolar transistor; or,

[0021] The anti-dry-burning switch is normally open when the liquid remaining quantity detection module is not working; or...

[0022] The anti-dry-burning switch includes an NMOS transistor. Its source is connected to the second terminal of the heating element, its drain is connected to the first terminal of the heating element, and its gate is connected to the liquid remaining quantity detection module; or...

[0023] The anti-dry-burning switch includes a PMOS transistor. The source of the anti-dry-burning switch is connected to the first end of the heating element, the drain is connected to the second end of the heating element, and the gate is connected to the liquid remaining quantity detection module.

[0024] Optionally, the heating assembly further includes a polarity conversion unit, one input terminal of which is connected to the first heating contact, and the other input terminal of which is connected to the second heating contact. Its first output terminal is positive, and its second output terminal is negative. The first output terminal is connected to the first end of the heating element, and the second output terminal is connected to the second end of the heating element; or...

[0025] The anti-dry-burning switch includes an upper NMOS transistor and a lower NMOS transistor connected in series. The source of the lower NMOS transistor is connected to the second terminal of the heating element, and the drain of the lower NMOS transistor is connected to the drain of the upper NMOS transistor. The source of the upper NMOS transistor is connected to the first terminal of the heating element. The control terminals of both the lower and upper NMOS transistors are connected to the liquid remaining quantity detection module; or,

[0026] The anti-dry-burning switch includes an upper PMOS transistor and a lower PMOS transistor connected in series. The source of the upper PMOS transistor is connected to the first terminal of the heating element, the drain of the upper PMOS transistor is connected to the drain of the lower PMOS transistor, and the source of the lower PMOS transistor is connected to the second terminal of the heating element. The control terminals of both the upper and lower PMOS transistors are connected to the liquid remaining quantity detection module; or,

[0027] The anti-dry-burning switch includes a main NMOS transistor and a substrate-switching NMOS transistor. The substrate-switching NMOS transistor is used to switch the bias of the substrate of the main NMOS transistor. The substrate-switching NMOS transistor includes a first NMOS transistor and a second NMOS transistor. The first terminal of the main NMOS transistor is connected to the second terminal of the heating element, and the second terminal of the main NMOS transistor is connected to the first terminal of the heating element. The source of the first NMOS transistor is connected to the substrate of the main NMOS transistor, and the drain of the first NMOS transistor is connected to the first terminal of the main NMOS transistor. The source of the second NMOS transistor is connected to the substrate of the main NMOS transistor, and the drain of the second NMOS transistor is connected to the second terminal of the main NMOS transistor. The control terminal of the main NMOS transistor is connected to the liquid level detection module. The control terminal of the second NMOS transistor is connected to the liquid level detection module or to a second heating contact. The control terminal of the first NMOS transistor is connected to the liquid level detection module or to a first heating contact. Alternatively...

[0028] The anti-dry-burning switch includes a main PMOS transistor and a substrate-switching PMOS transistor. The substrate-switching PMOS transistor is used to switch the bias of the substrate of the main PMOS transistor. The substrate-switching PMOS transistor includes a first PMOS transistor and a second PMOS transistor. The first terminal of the main PMOS transistor is connected to the first terminal of the heating element, and the second terminal of the main PMOS transistor is connected to the second terminal of the heating element. The drain of the first PMOS transistor is connected to the substrate of the main PMOS transistor, and the source of the first PMOS transistor is connected to the first terminal of the main PMOS transistor. The drain of the second PMOS transistor is connected to the substrate of the main PMOS transistor, and the source of the second PMOS transistor is connected to the second terminal of the main PMOS transistor. The control terminal of the main PMOS transistor is connected to the liquid remaining quantity detection module. The control terminal of the first PMOS transistor is connected to the liquid remaining quantity detection module or to the second heating contact. The control terminal of the second PMOS transistor is connected to the liquid remaining quantity detection module or to the first heating contact.

[0029] Optionally, the dry-burning logic control unit includes a time update subunit, which is connected to the storage unit and the first timing unit. When the heating element enters a non-working state, the time update subunit calculates the current time information and the duration of the first timing unit to obtain the calculation result, and outputs the calculation result to the storage unit to update the current time information.

[0030] Optionally, the liquid remaining quantity detection module includes a normally open locking unit, which is connected to the control terminal of the anti-dry-burning switch. A plurality of burning logic control units determine the generation of a pre-dry-burning signal. When the liquid remaining quantity detection module is working, the normally open locking unit locks the output conduction signal to the control terminal of the anti-dry-burning switch to keep it open and conducting.

[0031] Optionally, the liquid remaining quantity detection module further includes a heating detection unit, which is connected to the first heating contact and / or the second heating contact, and is also connected to the dry-burning logic control unit. The heating detection unit determines whether the heating element is in working condition based on the voltage on the first or second heating contact. If the heating detection unit determines that the heating element is in working condition, it starts outputting a working signal to the dry-burning logic control unit. If the dry-burning logic control unit determines that no pre-dry-burning signal is generated, it triggers the first timing unit to start the first timing from 0; or...

[0032] The liquid remaining quantity detection module also includes a heating detection unit, which is connected to a first heating contact and / or a second heating contact. The heating detection unit is also connected to a dry-burning logic control unit. The heating detection unit determines whether the heating element is in operation based on the voltage on the first or second heating contact. If the heating detection unit determines that the heating element is in operation, it starts outputting a working signal. The dry-burning logic control unit is triggered to determine whether to generate a pre-dry-burning signal based on the current time information and the duration of the first timing. The dry-burning logic control unit then triggers the first timing unit to start the first timing from 0; or...

[0033] The liquid remaining quantity detection module also includes a heating detection unit, which is connected to the first heating contact and / or the second heating contact. The heating detection unit is also connected to the dry burning logic control unit and the first timing unit. The heating detection unit determines whether the heating element is in working state by the voltage on the first heating contact or the second heating contact. If the heating detection unit determines that the heating element has entered working state, it starts to output a working signal. When the first timing unit receives the working signal, it starts the first timing from 0. When the dry burning logic control unit receives the working signal, it determines whether to generate a pre-dry burning signal based on the current time information and the duration of the first timing.

[0034] Optionally, the first heating contact or the second heating contact is continuously powered to keep the heating element in working condition. During the continuous power supply time, the heating detection unit continuously outputs a working signal, and the first timing unit performs a first timer for the continuous power supply time. When the first heating contact or the second heating contact is not powered, the heating detection unit outputs a non-working signal, and the first timing unit stops the first timer; or...

[0035] The first or second heating contact is intermittently powered to keep the heating element operational. During the intermittent power supply period, the heating detection unit continuously outputs a working signal. The intermittent power supply period includes a continuous power supply period and a continuous no-power supply period. The heating detection unit includes a second timing unit connected to the first or second heating contact. The second timing unit is used to perform a second timing for the continuous no-power supply period. When the first timing unit starts the first timing, if the duration of the second timing is greater than or equal to a preset second duration threshold, the heating detection unit outputs a no-operation signal, and the first timing unit stops the first timing; or...

[0036] The first heating contact or the second heating contact is intermittently powered to keep the heating element in working condition. The intermittent power supply time includes a continuous power supply period and a continuous no power supply period. During the intermittent power supply period, the first timing unit starts a first timer for the continuous power supply period. During the continuous no power supply period, the first timing unit pauses the first timer.

[0037] Optionally, the pre-dry-burn signal is also used to output to the power supply control component. The heating component includes a second communication contact, which is electrically connected to the dry-burn logic control unit. The second communication contact is also used for contact-type electrical connection with the power supply control component. When the dry-burn logic control unit determines that a pre-dry-burn signal is generated, the dry-burn logic control unit outputs the pre-dry-burn signal to the power supply control component through the second communication contact; or...

[0038] The pre-dry-burn signal is also used to output to the power supply control component. The heating component includes a second communication unit, which is electrically connected to the dry-burn logic control unit. The second communication unit is also used to wirelessly connect with the power supply control component. When the dry-burn logic control unit determines that a pre-dry-burn signal is generated, the dry-burn logic control unit outputs the pre-dry-burn signal to the power supply control component through the second communication unit.

[0039] Optionally, the heating assembly further includes a unidirectional conducting element and a power supply capacitor. The unidirectional conducting element includes a first diode. The liquid remaining quantity detection module includes a heating power supply terminal and a heating ground terminal. The anode of the first diode is connected to a first heating contact, which is connected to a power supply contact of the power supply control assembly. The cathode of the first diode is connected to both the heating power supply terminal and the first terminal of the power supply capacitor. The second terminal of the power supply capacitor is connected to the heating ground terminal, and the heating ground terminal is connected to the second heating contact. Alternatively,

[0040] The heating assembly includes multiple unidirectional conducting elements and a power supply capacitor. The multiple unidirectional conducting elements include a first diode, a second diode, a third diode, and a fourth diode. The liquid remaining quantity detection module includes a heating power supply terminal and a heating ground terminal. The anode of the first diode is connected to the first heating contact, the first end of the heating element, and the cathode of the third diode. The cathode of the first diode is connected to the heating power supply terminal, the first end of the power supply capacitor, and the cathode of the second diode. The anode of the second diode is connected to the cathode of the fourth diode, the second heating contact, and the second end of the heating element. The anode of the third diode is connected to the second end of the power supply capacitor and the anode of the fourth diode. The second end of the power supply capacitor is connected to the heating ground terminal.

[0041] A second aspect of this application provides an electronic device, including:

[0042] The heating components mentioned above;

[0043] A power supply control component for detachable connection with a heating component, the power supply control component comprising: a power source;

[0044] The system control module is used to connect to the positive and negative terminals of the power supply;

[0045] The system includes a power switch, a power supply contact, and a power ground contact. The control terminal of the power switch is used to connect to a system control module. Its first terminal is connected to the positive terminal of the power supply, and its second terminal is connected to the power supply contact. The power ground contact is connected to the negative terminal of the power supply. The power supply contact is connected to one of a first heating contact and a second heating contact, and the power ground contact is connected to the other of the first and second heating contacts. Alternatively, the control terminal of the power switch is used to connect to the system control module. Its first terminal is connected to the negative terminal of the power supply, and its second terminal is connected to the power ground contact. The power supply contact is connected to the positive terminal of the power supply, and the power supply contact is connected to one of the first and second heating contacts, and the power ground contact is connected to the other of the first and second heating contacts.

[0046] Specifically, when the power supply control component is connected to the heating component and the system control module controls the power switch to be turned on, the power supply provides power to the heating component; when the power supply control component is connected to the heating component and the system control module controls the power switch to be turned off, the power supply stops providing power to the heating component.

[0047] Optionally, the system control module further includes a load short-circuit detection unit, which is connected to the second terminal of the power switch. When the load short-circuit detection unit determines that the heating component is in a short-circuit state by the current flowing through the second terminal of the power switch or by the voltage at the second terminal of the power switch, the load short-circuit detection unit outputs a short-circuit signal, and the system control module controls the power switch to lock and disconnect.

[0048] Optionally, the system control module further includes a separation monitoring unit and a detection resistor. The separation monitoring unit is connected to the second terminal of the power switch and is used to monitor whether the heating component is connected to the power supply control component. One end of the detection resistor is connected to the first terminal of the power switch, and the other end of the detection resistor is connected to the second terminal of the power switch. The ratio of the resistance value of the detection resistor to the resistance value of the heating element is greater than 1000:1. The separation monitoring unit does not monitor when the heating element is in the working state. When the separation monitoring unit detects that the heating component and the power supply control component change from a separated state to a connected state or from a connected state to a separated state, the system control module releases the lock of the power switch disconnection.

[0049] A third aspect of this application provides a liquid remaining quantity control circuit, including:

[0050] An anti-dry-burning switch is used to connect in parallel with the heating element;

[0051] A liquid remaining quantity detection module is connected to the control terminal of the anti-dry-burning switch. The liquid remaining quantity detection module is used to determine whether a pre-dry-burning signal is generated. The pre-dry-burning signal is used to indicate that the liquid remaining quantity is less than or equal to a first liquid threshold. The pre-dry-burning signal is used to turn on the anti-dry-burning switch so that the heating element is short-circuited and stops working to be in a non-working state.

[0052] Optionally, the liquid remaining quantity detection module includes:

[0053] A storage unit for storing current time information associated with the remaining liquid level;

[0054] The first timing unit is used to perform a first timing of at least a portion of the duration during which the heating element is in operation;

[0055] The dry-burning logic control unit is connected to the storage unit and the first timing unit, and is also connected to the control terminal of the anti-dry-burning switch. The dry-burning logic control unit determines whether to generate a pre-dry-burning signal based on the current time information and the duration of the first timing.

[0056] Optionally, the liquid remaining quantity detection module and the anti-dry-burning switch are integrated onto the same chip; or,

[0057] The liquid remaining quantity detection module is integrated on one chip, and the anti-dry burning switch is integrated on another chip.

[0058] In this embodiment, since both the liquid level remaining detection module and the anti-dry-burning switch are located within the heating assembly, when the liquid level remaining detection module determines that the liquid level remaining in the storage chamber is less than or equal to the first liquid threshold, the liquid level remaining detection module will generate a pre-dry-burning signal. The pre-dry-burning signal is used to activate the anti-dry-burning switch, so that the heating element is short-circuited and stops working, thus entering a non-working state. Therefore, the heating component in this embodiment can stop the heating element from working through the anti-dry-burning switch, thereby preventing dry burning. It does not need to be used in conjunction with the power supply control component. The electronic device does not need to make additional modifications to the power supply control component to add the anti-dry-burning function. The heating component is also compatible with the old power supply control component. That is, the heating component can also have the anti-dry-burning function when used with the old power supply control component. This can greatly expand the application range of the heating component in this embodiment. Even if the electronic device manufacturer does not provide a heating component with anti-dry-burning function, users can purchase the heating component of this embodiment based on health and safety considerations and use it in conjunction with the old power supply control component to achieve the anti-dry-burning function. This increases the user's choice. The heating component in this embodiment greatly reduces the probability of dry burning, will not harm the user's health, and extends the service life of the electronic device. Attached Figure Description

[0059] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0060] Figure 1 This is a schematic diagram of the circuit module of the electronic device according to the first embodiment of this application;

[0061] Figure 2 This is a schematic diagram of the circuit module of an electronic device according to another embodiment of this application;

[0062] Figure 3 This is a schematic diagram of a circuit module of a heating component according to the first embodiment of this application;

[0063] Figure 4 This is a schematic diagram of a partial circuit module of a power supply control component according to the first embodiment of this application;

[0064] Figure 5aThis is a timing waveform diagram of components such as a power switch, a first heating terminal, and a first timing unit according to the first embodiment of this application;

[0065] Figure 5b This is another timing waveform diagram of the power switch, first heating terminal, first timing unit and other components in the first embodiment of this application;

[0066] Figure 6 This is a schematic diagram of the circuit module of a heating assembly according to another embodiment of this application;

[0067] Figure 7 This is a schematic diagram of a circuit module of the liquid remaining quantity detection module according to the first embodiment of this application;

[0068] Figure 8a This is a schematic diagram of another circuit module of the liquid remaining quantity detection module in the first embodiment of this application;

[0069] Figure 8b This is a schematic diagram of a circuit module for a liquid remaining quantity detection module according to another embodiment of this application;

[0070] Figure 9a This is a schematic diagram of a circuit module of a heating component according to the first embodiment of this application;

[0071] Figure 9b This is a schematic diagram of a circuit module of another heating component according to the first embodiment of this application;

[0072] Figure 10 This is a schematic diagram of the circuit module of the liquid remaining quantity detection module according to the second embodiment of this application;

[0073] Figure 11 This is a schematic diagram of the circuit module of the electronic device according to the third embodiment of this application;

[0074] Figure 12 This is a schematic diagram of the circuit module of an electronic device according to another embodiment of this application;

[0075] Figure 13a This is a schematic diagram of the circuit module of the heating assembly according to the third embodiment of this application;

[0076] Figure 13b This is a schematic diagram of the circuit module of a heating assembly according to another embodiment of this application;

[0077] Figure 13c This is a schematic diagram of the circuit module of a heating component according to another embodiment of this application;

[0078] Figure 13d This is a schematic diagram of the circuit module of the heating component according to another embodiment of this application;

[0079] Figure 13eThis is a schematic diagram of the circuit module of a heating component according to another embodiment of this application;

[0080] Figure 14a This is a schematic diagram of the circuit module of the heating assembly according to the fourth embodiment of this application;

[0081] Figure 14b This is a schematic diagram of the circuit module of an electronic device according to another embodiment of this application. Detailed Implementation

[0082] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0083] The terms "comprising" and "having," and any variations thereof, appearing in this application specification, claims, and drawings, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or modules is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices. Furthermore, the terms "first," "second," and "third," etc., are used to distinguish different objects and are not used to describe a specific order. Connections in this application include direct connections and indirect connections. An indirect connection refers to the presence of other electronic components, pins, etc., between the two connected components. The term "XX terminal" mentioned in this application may or may not be an actual terminal, such as simply one end of a component or one end of a wire. The term "and / or includes three cases" mentioned in this application, such as A and / or B, includes A, B, and A and B.

[0084] First Embodiment

[0085] Please see Figure 1 This application provides an electronic device, such as a medical electronic atomizing device or a general electronic atomizing device, which is a device that needs to heat liquid. The electronic device uses electricity to heat and atomize the liquid into an aerosol for the user to inhale.

[0086] In this embodiment, the electronic device includes a heating component 200 and a power supply control component 100. The heating component 200 and the power supply control component 100 are detachably connected. For example, the heating component 200 and the power supply control component 100 can be plugged in, magnetically connected, screwed together, etc. The heating component 200 can be separated from the power supply control component 100 so that the two can be separated. At this time, a new heating component 200 can be replaced as needed. The power supply control component 100 can be shared, which can save costs.

[0087] In this embodiment, the heating assembly 200 includes a liquid storage chamber (not shown in the figure) and a heating element 210. The liquid storage chamber stores liquid, such as liquid medicine, e-liquid, etc. Liquid medicine is such as liquid Western medicine, liquid traditional Chinese medicine, etc. The heating element 210 is used to atomize the liquid to generate an aerosol for the user to inhale. The heating element 210 is, for example, a heating wire, a heating wire, a ceramic core containing a heating wire or a heating wire and a ceramic base, a cotton core containing a heating wire or a heating wire and fiber cotton, or other conventional heating elements 210. The heating element 210 is powered and heated to atomize the liquid introduced from the liquid storage chamber, thereby generating an aerosol. When the liquid in the storage chamber is atomized and the remaining liquid is small or nonexistent, the user can remove the heating element 200 from the power supply control component 100 and replace it with a new heating element 200. This way, the entire electronic device does not need to be discarded. After replacing it with a new heating element 200, it can be connected to the power supply control component 100, and the electronic device can continue to be used. This allows the power supply control component 100 to be shared, which helps to reduce the cost of the electronic device.

[0088] In this embodiment, the power supply control component 100 includes a power supply 110, an atomizing switch, a system control module 130, a power switch M1, a power supply contact VCD1, and a power ground contact GCD1. The power supply 110 can be a battery, AC-DC converter, DC-DC converter, etc., preferably a rechargeable battery. The system control module 130 includes a system power supply terminal VDD1, a system ground terminal GND1, an airflow terminal SW, and an atomizing terminal AT. The system power supply terminal VDD1 is electrically connected to the positive terminal of the power supply 110, and the system ground terminal GND1 is electrically connected to the negative terminal of the power supply 110. The atomizing switch is, for example, an airflow sensor 120, a push-button switch, etc. In this embodiment, the airflow sensor 120 is used as an example. The airflow terminal SW is connected to one end of the airflow sensor 120, and the other end of the airflow sensor 120 is connected to the system ground terminal GND1. The airflow sensor 120 is used to detect the direction and magnitude of the airflow. The airflow sensor 120 is, for example, a capacitive microphone, a barometric pressure sensor, a MEMS sensor, etc. The barometric pressure sensor is, for example, a capacitive barometric pressure sensor, a piezoresistive barometric pressure sensor, a piezoelectric barometric pressure sensor, etc. The system control module 130, in conjunction with the airflow sensor 120, determines whether the electronic device is being drawn in and is in a drawing state, or whether the electronic device is not being drawn in and is in a non-drawing state. The specific determination method is conventional technology in this field and will not be elaborated here. The control terminal of the power switch M1 is connected to the system control module 130. The first terminal of the power switch M1 is connected to the system power supply terminal VDD1 (power switch M1 is on top). The second terminal of the power switch M1 is connected to the atomizing terminal AT. The atomizing terminal AT is connected to the power supply contact VCD1. The power supply contact VCD1 is used to connect to the heating element 210. The power ground contact GCD1 is used to connect to the negative terminal of the power supply 110. The power ground contact GCD1 is used to connect to the heating element 210. That is, the power supply control component 100 supplies power to the heating element 210 through the power supply contact VCD1 and the power ground contact GCD1. When the user uses the electronic device, such as when the user sucks in a device or the button switch is pressed, the system control module 130 controls the power switch M1 to be normally on or intermittently on. The intermittent on-state control of the power switch M1 by the system control module 130 includes, but is not limited to, the following two methods; when the user does not use the electronic device, such as when the user does not suck in a device or the button switch is not pressed, the system control module 130 controls the power switch M1 to remain off. In this embodiment, the power switch M1 is, for example, a PMOS transistor, an NMOS transistor, or a FET transistor. Figure 1 The PMOS transistor will be used as an example for explanation.

[0089] 1. The system control module 130 outputs a square wave signal via PWM (Pulse Width Modulation) (see reference). Figure 5bThis method controls the power switch M1 to conduct intermittently. In PWM mode, the frequency (period) remains constant, while the on-time (corresponding to the low-level time of the square wave signal) and off-time (corresponding to the high-level time of the square wave signal) of the power switch M1 are adjustable. The on-time and off-time constitute one signal cycle. In this mode, the power switch M1 is turned on during the on-time of one signal cycle and turned off during the off-time.

[0090] 2. The system control module 130 can also output a square wave signal via PFM (Pulse Frequency Modulation) (see reference). Figure 5b This method controls the intermittent conduction of power switch M1. In PFM mode, the frequency (period) is adjustable. The on-time (corresponding to the low-level time of the square wave signal) or off-time (corresponding to the high-level time of the square wave signal) of power switch M1 remains unchanged. The on-time and off-time constitute one signal cycle. In this mode, power switch M1 is turned on during the on-time of one signal cycle and turned off during the off-time.

[0091] Additionally, please refer to other embodiments of this application. Figure 2 The control terminal of power switch M1 is connected to system control module 130. The first terminal of power switch M1 is connected to system ground terminal GND1 (power switch M1 is located at the bottom). The second terminal of power switch M1 is connected to atomizing terminal AT. Atomizing terminal AT is connected to power ground contact GCD1. Power ground contact GCD1 is used to connect to heating element 210. Power supply contact VCD1 is used to connect to the positive terminal of power supply 110. Power supply contact VCD1 is used to connect to heating element 210. That is, power supply control component 100 supplies power to heating element 210 through power supply contact VCD1 and power ground contact GCD1. When the user uses the electronic device, such as when the user inhales or the button switch is pressed, system control module 130 controls power switch M1 to be normally or intermittently turned on, thereby supplying power to heating element 210. When the user does not use the electronic device, such as when the user does not inhale or the button switch is not pressed, system control module 130 controls power switch M1 to remain off, and heating element 210 is not powered at this time. Here, the power switch M1 is, for example, an NMOS transistor, a PMOS transistor, a FET transistor, etc. Figure 2 The following explanation uses an NMOS transistor as an example. Here, the system control module 130 controls the power switch M1 to conduct intermittently using PWM or PFM methods. For example, the on-time of the power switch M1 corresponds to the high-level time of the square wave signal, and the off-time corresponds to the low-level time of the square wave signal.

[0092] Please continue reading Figure 1In this embodiment, the system control module 130 includes an airflow detection unit 131 and a switch control unit 132. The input terminal of the airflow detection unit 131 is connected to the airflow terminal SW. The airflow detection unit 131 is used to detect whether the electronic device is in a suction state or a non-suction state. The output terminal of the airflow detection unit 131 is connected to the switch control unit 132, which is connected to the control terminal of the power switch M1. When the airflow detection unit 131 detects that the electronic device is in a suction state, it outputs a suction signal to the switch control unit 132, which controls the power switch M1 to be normally or intermittently on. When the airflow detection unit 131 detects that the electronic device is in a non-suction state, it outputs a non-suction signal to the switch control unit 132, which controls the power switch M1 to be turned off. In this embodiment, the non-suction state corresponds to the state where the electronic device is not used and the blowing state, etc.

[0093] To power the heating element 200, please continue reading. Figure 1 In this embodiment, the power supply contact VCD1 is connected to the second terminal of the power switch M1 via the atomizing end AT, and the power ground contact GCD1 is connected to the negative terminal of the power supply 110. The heating assembly 200 includes a first heating contact VCD2 and a second heating contact GCD2, wherein the first heating contact VCD2 is connected to the first terminal of the heating element 210, and the second heating contact GCD2 is connected to the second terminal of the heating element 210. When the heating assembly 200 is connected to the power supply control assembly 100, the first heating contact VCD2 is electrically connected to the power supply contact VCD1, and the second heating contact GCD2 is electrically connected to the power ground contact GCD1. When the power switch M1 is turned on, the power supply 110 supplies power to the heating element 210. When the heating assembly 200 is disconnected from the power supply control assembly 100, the first heating contact VCD2 is disconnected from the power supply contact VCD1, and the second heating contact GCD2 is disconnected from the power ground contact GCD1. For other embodiments of this application, please refer to [link to other embodiments]. Figure 2 The power supply contact VCD1 is connected to the positive terminal of the power supply 110, the power ground contact GCD1 is connected to the second terminal of the power switch M1 via the atomizing terminal AT, the first heating contact VCD2 is connected to the first terminal of the heating element 210, and the second heating contact GCD2 is connected to the second terminal of the heating element 210. When the heating assembly 200 is connected to the power supply control assembly 100, the first heating contact VCD2 is electrically connected to the power supply contact VCD1, and the second heating contact GCD2 is electrically connected to the power ground contact GCD1.

[0094] Please refer to the above. Figure 1 and Figure 3In this embodiment, the heating assembly 200 further includes an anti-dry-burning switch K1, which is connected in parallel with the heating element 210. Specifically, the first end of the heating element 210 is connected to the first heating contact VCD2, and the second end of the heating element 210 is connected to the second heating contact GCD2. The first end of the anti-dry-burning switch K1 is connected to the first end of the heating element 210, and the second end of the anti-dry-burning switch K1 is connected to the second end of the heating element 210. When the anti-dry-burning switch K1 is off, the power switch M1 is on, and the heating element 210 can heat up, and the heating element 210 is in a working state. When the anti-dry-burning switch K1 is on, the anti-dry-burning switch K1 will short-circuit the two ends of the heating element 210, so that when the power switch M1 is on, the heating element 210 is short-circuited, and the heating element 210 is in a non-working state and will not heat up.

[0095] In this embodiment, the heating assembly 200 further includes a liquid remaining quantity detection module 230. The liquid remaining quantity detection module 230 is connected to the control terminal of the anti-dry-burning switch K1, the first heating contact VCD2, and the second heating contact GCD2. The liquid remaining quantity detection module 230 is used to control whether the anti-dry-burning switch K1 is turned on. The liquid remaining quantity detection module 230 is used to evaluate whether the liquid remaining quantity in the liquid storage chamber is less than or equal to a first liquid threshold. If it is less than or equal to the first liquid threshold, a pre-dry-burning signal is generated. The pre-dry-burning signal is used to turn on the anti-dry-burning switch K1, so that the heating element 210 is short-circuited and stops working, thus preventing dry burning. In this embodiment, the anti-dry-burning switch K1 is normally open in the default state, that is, it is normally open when the anti-dry-burning switch K1 is not controlled, that is, it is normally open when the liquid remaining quantity detection module 230 is not powered, that is, it is normally open when the liquid remaining quantity detection module 230 is not working. Under normal circumstances, the anti-dry-burning switch K1 does not function, similar to an open circuit state. Therefore, when the heating assembly 200 is in normal use, the heating element 210 is connected as a resistor between the first heating contact VCD2 and the second heating contact GCD2. The working state of the heating assembly 200 with the anti-dry-burning switch K1 is the same as that without the existing anti-dry-burning switch K1: when the electronic device is in a suction state and the power switch M1 is constantly or intermittently on, the power supply 110 supplies power to the heating element 210, and the heating element 210 is in a working state, atomizing liquid to generate aerosol. When the electronic device is in a non-suction state and the power switch M1 is off, the power supply 110 stops supplying power to the heating element 210, and the heating element 210 stops atomizing liquid and enters a non-working state. In this embodiment, the anti-dry-burning switch K1 includes one switch, two or more switches connected in series, such as NMOS transistors, PMOS transistors, junction field-effect transistors, and bipolar transistors.

[0096] In this embodiment, the liquid remaining quantity detection module 230 includes a storage unit 231, a first timing unit 233, and a dry-burning logic control unit 232. The storage unit 231 stores current time information associated with the remaining liquid quantity; that is, the current time information can be used to characterize the remaining liquid quantity. In this embodiment, the initial value of the current time information is, for example, 0 seconds. As the liquid is atomized, the current time information is updated to gradually increase, at which point the current time information is, for example, 51.2 seconds. The first timing unit 233 performs a first timing of at least a portion of the operating time of the heating element 210. In this embodiment, the first timing is performed for the entire operating time of the heating element 210. The operating time of the heating element 210 under normal conditions corresponds to the duration of the suction state. When the heating element 210 finishes operating, the first timing is reset to zero. In this embodiment, the dry-burning logic control unit 232 is connected to the control terminals of the storage unit 231, the first timing unit 233, and the anti-dry-burning switch K1. The dry-burning logic control unit 232 determines in real time whether to generate a pre-dry-burning signal based on the current time information and the duration of the first timing. The pre-dry-burning signal is used to indicate that the remaining liquid is less than or equal to the first liquid threshold. That is, when a pre-dry-burning signal is generated, it means that the remaining liquid is less than or equal to the preset first liquid threshold. When no pre-dry-burning signal is generated, it means that the remaining liquid is greater than the first liquid threshold. When the dry-burning logic control unit 232 generates a pre-dry-burning signal, the remaining liquid detection module 230 controls the anti-dry-burning switch K1 to turn on (at this time, regardless of whether the power switch M1 is on), the heating element 210 is short-circuited, and the heating element 210 stops working to enter a non-working state. Thus, the heating element 210 will no longer heat up, which can prevent the heating element 210 from dry-burning. This embodiment assesses whether the remaining liquid level is less than or equal to a first liquid threshold based on the current time information and the duration of the first timing. However, this application is not limited to this. In other embodiments of this application, the liquid remaining quantity detection module 230 can also assess whether the remaining liquid level is less than or equal to the first liquid threshold in other ways. For example, it can directly measure the remaining liquid level in the storage chamber using a liquid level sensor to assess whether the remaining liquid level is less than or equal to the first liquid threshold, or it can assess the remaining liquid level in the storage chamber using a gravity sensor to assess whether the remaining liquid level is less than or equal to the first liquid threshold, or it can assess whether the remaining liquid level is less than or equal to the first liquid threshold by counting the number of suction cycles, or it can assess whether the remaining liquid level is less than or equal to the first liquid threshold using other conventional methods. The method of this embodiment is preferred because it is simple in design and relatively accurate in assessing the remaining liquid level.

[0097] In this embodiment, since the liquid remaining quantity detection module, such as the first timing unit 233, the storage unit 231, and the dry burning logic control unit 232, as well as the anti-dry burning switch K1, are all located within the heating assembly 200, when the liquid remaining quantity detection module determines that the liquid remaining quantity in the storage chamber is less than or equal to the first liquid threshold, the dry burning logic control will generate a pre-dry burning signal. The pre-dry burning signal is used to turn on the anti-dry burning switch K1 so that the heating element 210 is short-circuited and stops working to be in a non-working state. Therefore, the heating component 200 of this embodiment can stop the heating element 210 from working through the anti-dry-burning switch K1, thereby preventing dry burning. It does not need to be used in conjunction with the power supply control component 100. The electronic device does not need to make additional modifications to the power supply control component 100 to add the anti-dry-burning function. The heating component 200 is also compatible with the old power supply control component 100. That is, the heating component 200 can also have the anti-dry-burning function when used with the old power supply control component 100. This can greatly expand the application range of the heating component 200 of this embodiment. Even if the electronic device manufacturer does not equip the heating component 200 with the anti-dry-burning function, the user can purchase the heating component 200 of this embodiment and use it in conjunction with the old power supply control component 100 based on health and safety considerations to achieve the anti-dry-burning function, thus increasing the user's choice. The heating component 200 of this embodiment greatly reduces the probability of dry burning, will not harm the user's health, and extends the service life of the electronic device. Furthermore, when the heating element 210 fails to operate due to looseness or poor contact between the heating component 200 and the power supply control component 100 (at which point the power switch M1 remains normally or intermittently on), the first timing unit 233 will not keep time. This avoids the situation in the prior art where the heating element 210 is not operating, yet the first timing unit 233 continues to keep time. Therefore, the duration of the first timing by the first timing unit 233 accurately reflects the duration of the heating element 210's operation. The current time information is then processed along with the duration of the first timing, and the current time information in the storage unit 231 is updated. This ensures that the current time information accurately reflects the remaining liquid in the reservoir, preventing the situation in the prior art where the remaining liquid is judged to be less than or equal to a first liquid threshold, even though the actual remaining liquid in the reservoir is still relatively large. This prevents liquid waste and saves user costs. Moreover, in this embodiment, the dry-burning logic control unit 232 assesses whether the remaining liquid is less than or equal to the first liquid threshold based on the current time information and the duration of the first timing, which is more accurate and reliable than the method of assessing the remaining liquid by counting increments.Furthermore, regardless of whether the user replaces the heating component 200, since the first timing unit 233 and the liquid storage chamber are both located within the heating component 200, and the entire heating component 200 is supplied by the same manufacturer, the first timing unit 233 in the heating component 200 has good consistency with the timing device that tests the usable time of the liquid in the heating component 200. Therefore, the first timing match is good, and the probability of timing mismatch is low. Also, even if the heating component 200 and the power supply control component 100 cannot communicate due to looseness or poor contact, since the first timing unit 233, the dry-burning logic control unit 232, and the storage unit 231 are all located within the heating component 200, the dry-burning logic control unit 232 can calculate the current time information and the duration of the first timing, ensuring successful updating of the current time information in the storage unit 231. There will be no problems with updates failing due to communication failure or the next update not corresponding (updating to the newly replaced heating component 200). Therefore, the current time information has good consistency with the remaining liquid amount in the liquid storage chamber.

[0098] In this embodiment, when the liquid remaining quantity detection module 230 generates a pre-dry-burning signal, the anti-dry-burning switch K1 is activated. If the power switch M1 is activated, the positive and negative terminals of the power supply 110 will be short-circuited by the power switch M1 and the anti-dry-burning switch K1, resulting in a large current. A short-term large current will not generate significant heat and has limited impact on electronic devices. However, if the current is prolonged, it can damage the power switch M1, the anti-dry-burning switch K1, and the wiring. To address this issue, please refer to [link to relevant documentation]. Figure 4In this embodiment, the system control module 130 further includes a load short-circuit detection unit 133. The load short-circuit detection unit 133 is connected to the second terminal of the power switch M1, that is, connected to the atomizing terminal AT. The load short-circuit detection unit 133 determines whether the heating component 200 is in a short-circuit state by the current flowing through the power switch M1 or by the voltage at the second terminal of the power switch M1. For example, when determining by current, the load can be determined by converting the mirrored current to voltage or by using the current to determine whether the load is in a short-circuit state. For example, when determining by voltage, the load can be determined by using a resistor voltage divider. Preferably, the load short-circuit state is assessed by the current flowing through the power switch M1. When it is determined that the heating element 210, etc., is in a short-circuit state, the load short-circuit detection unit 133 outputs a short-circuit signal to the switch control unit 132. The switch control unit 132 controls the power switch M1 to open and remain open, and the power supply 110 stops supplying power to the heating component 200, so that a large current will not occur for a long time after the anti-dry-burning switch K1 is turned on. In other embodiments of this application, the load short-circuit detection unit 133 may not be provided. When the system control module 130 receives the pre-dry burning signal or the signal corresponding to the pre-dry burning signal output by the heating component 200 (described later), the switch control component also controls the power switch M1 to open and close.

[0099] In this embodiment, when the liquid remaining quantity detection module 230 is powered on and the dry-burning logic control unit 232 does not generate a pre-dry-burning signal, the anti-dry-burning switch K1 remains normally open. When the liquid remaining quantity detection module 230 is not powered on or the power supply is insufficient, causing it to not work, the anti-dry-burning switch K1 also remains normally open. When the liquid remaining quantity detection module 230 is powered on and the dry-burning logic control unit 232 generates a pre-dry-burning signal, the anti-dry-burning switch K1 is controlled to open and conduct. During the period when the liquid remaining quantity detection module 230 is powered on and not working, the anti-dry-burning switch K1 will return to being normally open. When the liquid remaining quantity detection module 230 is powered on again and the dry-burning logic control unit 232 generates a pre-dry-burning signal again, the anti-dry-burning switch K1 will open and conduct again. Therefore, in this embodiment, when the electronic device is in the suction state, the system control module 130 controls the power switch M1 to be normally on or intermittently on, and the anti-dry-burning switch K1 is normally off, then the heating element 210 is in the working state. When the electronic device is in the non-suction state or the anti-dry-burning switch K1 is controlled to be turned on, the heating element 210 is in the non-working state. In this embodiment, after the pre-dry-burning signal is generated, it can be directly output to the control terminal of the anti-dry-burning switch K1. At this time, the pre-dry-burning signal is the on-conduction signal. After the pre-dry-burning signal is generated, it can also be converted into an on-conduction signal and output to the control terminal of the anti-dry-burning switch K1. Finally, the signal received by the control terminal CO of the anti-dry-burning switch K1 is the on-conduction signal, so that the anti-dry-burning switch K1 is controlled to be turned on.

[0100] In this embodiment, the dry-burning logic control unit 232 calculates the current time information and the duration of the first timer, and compares the calculation result with a preset first duration threshold. The first duration threshold corresponds to a first liquid threshold and can be either an accumulated duration threshold or a subtracted duration threshold mentioned later, or other duration thresholds. The dry-burning logic control unit 232 determines whether to generate a pre-dry-burning signal based on the comparison result. When the heating element 210 is in working condition, the dry-burning logic control unit 232 calculates the current time information and the duration of the first timer in real time, and compares the calculation result with the preset first duration threshold in real time to determine whether to generate a pre-dry-burning signal. This processing helps to prevent dry burning in a timely manner. In other embodiments of this application, when the heating component 200 and the power supply control component 100 change from separation to connection (see the following description for how the power supply control component 100 determines the state between the two), the power supply control component 100 will briefly supply power to the heating component 200 (power switch M1 is briefly turned on). At this time, the dry-burning logic control unit 232 obtains the current time information and the duration of the first timer (the duration of the first timer is 0 at this time), and determines whether to generate a pre-dry-burning signal based on the current time information and the duration of the first timer. After the power supply ends, the dry-burning logic control unit 232 no longer determines whether to generate a pre-dry-burning signal based on the current time information and the duration of the first timer. This processing is beneficial for users to promptly detect whether there is a problem with the heating component 200. In other embodiments of this application, as long as the heating component 200 is powered, the dry-burning logic control unit 232 will determine whether to generate a pre-dry-burning signal according to the current time information and the duration of the first timer at a preset frequency.

[0101] In order for the first timing unit 233 to keep track of the working time of the heating element 210 in a timely manner, please continue to refer to Figure 3In this embodiment, the liquid remaining quantity detection module 230 further includes a heating detection unit 234. The heating detection unit 234 is electrically connected to the first heating contact VCD2 via a detection terminal JC. The heating detection unit 234 is connected to the dry-burning logic control unit 232. When the heating detection unit 234 detects that the heating element 210 has started working (when it is in the working state), the heating detection unit 234 starts to output a working signal to the dry-burning logic control unit 232. The dry-burning logic control unit 232 obtains the current time information and the duration of the first timer from the storage unit 231, and then compares the current time information with the duration of the first timer. The first timing unit 232 performs calculations (with the first timing duration being 0) and compares the calculation result with the first timing threshold to determine whether the remaining liquid is less than or equal to the first liquid threshold. If the comparison result indicates that the remaining liquid is greater than the preset first liquid threshold, the dry-burning logic control unit 232 triggers the first timing unit 233 to start the first timing from 0. This setting can generate a pre-dry-burning signal relatively promptly. However, it is necessary to wait for the judgment result before determining whether to trigger the first timing. Since the anti-dry-burning switch K1 is always open, the duration of the first timing will be slightly shorter than the actual working time. The shorter duration is about microseconds or nanoseconds, which has a very small impact. In other embodiments of this application, the heating detection unit 234 is connected to the dry-burning logic control unit 232. When the heating detection unit 234 starts outputting a working signal to the dry-burning logic control unit 232, the dry-burning logic control unit 232 calculates the current time information with the duration of the first timing (at this time, the duration of the first timing is 0) and compares the calculation result with the first duration threshold. At the same time, the dry-burning logic control unit 232 triggers the first timing unit 233 to start the first timing from 0. This setting can make the timing relatively accurate, and the first timing does not need to wait for the comparison result. In other embodiments of this application, both the dry-burning logic control unit 232 and the first timing unit 233 are connected to the heating detection unit 234. When the first timing unit 233 receives the working signal, it triggers the first timing to start from 0. At the same time, the dry-burning logic control unit 232 receives the working signal, calculates the current time information with the duration of the first timing, and compares the calculation result with the first duration threshold. This processing of the timing will be more accurate. During the operation of the heating element 210, the dry burning logic control unit 232 calculates the current time information and the duration of the first timer (at this time, the duration of the first timer is not 0) and compares the calculation result with the preset first duration threshold in real time to determine whether the remaining liquid is less than or equal to the first liquid threshold. The first liquid threshold is greater than 0 ml, for example, 0.1 ml, 0.2 ml, 0.3 ml, etc. Generally, the first liquid threshold does not exceed 10% of the liquid stored in the liquid storage chamber of the new heating component 200, preferably greater than 0 and not exceeding 5%, 3%, 1%, etc.When the heating element 210 stops working, the heating detection unit 234 changes from outputting a working signal to outputting a non-working signal, the first timing unit 233 stops timing, the dry burning logic control unit 232 stops comparing, and then the first duration is reset to zero.

[0102] In this embodiment, since the anti-dry burning switch K1 is normally open by default, and the dry burning logic control unit 232 needs some time to compare and determine whether dry burning has occurred and to turn on the anti-dry burning switch K1, the heating element 210 will heat for a very short time during this time. Such a short heating time is not enough to cause dry burning.

[0103] Please refer to the above. Figure 1 and Figure 3 In this embodiment, the heating detection unit 234 is connected to the first heating contact VCD2, which is electrically connected to the power supply contact VCD1. Since the anti-dry-burning switch K1 is normally open, when the power switch M1 is turned on, the heating element 210 starts working and enters the working state. The first heating contact VCD2 changes from a low level to a high level, so the heating detection unit 234 (if it has not received a pre-dry-burning signal) can detect that the first heating contact VCD2 has changed from a low level to a high level or is already at a high level. The heating detection unit 234 determines that the heating element 210 is in the working state and outputs a working signal, and the first timing unit 233 starts the first timing. In this embodiment, when the user uses the electronic device, the system control unit drives the power switch M1 to turn on in three ways:

[0104] 1. Drive power switch M1 is normally on. Please refer to [link / reference]. Figure 5a When power switch M1 is on, it indicates that the user is using the electronic device. The first heating contact VCD2 is continuously powered, the heating element 210 operates, and the first heating contact VCD2 changes from low to high level. The heating detection unit 234 can detect the change in the first heating contact VCD2 from low to high level or remain high, and outputs a working signal. The first timing unit 233 starts timing from 0. When power switch M1 is off, it indicates that the user is no longer using the electronic device. The first heating contact VCD2 is de-powered, the heating element 210 stops operating, and the first heating contact VCD2 changes from high to low level. The heating detection unit 234 can detect the change in the first heating contact VCD2 from high to low level or remain low, and outputs a non-working signal. The first timing unit 233 stops timing and then resets to zero. Here, the first timing unit 233 performs the first timing for the entire continuous power supply time. Additionally, in... Figure 5aIn the process, when power switch M1 is turned on for the third time, the first timing unit 233 starts the first timing. The dry-burning logic control unit 232 calculates the current time information and the duration of the first timing, and compares the calculation result with the first duration threshold. After being turned on for a period of time, at time t3, the dry-burning logic control unit 232 determines that the calculation result is greater than or equal to the first duration threshold, thereby generating a pre-dry-burning signal. At this time, the anti-dry-burning switch K1 is controlled to turn on, and the anti-dry-burning switch K1 short-circuits the two ends of the heating element 210. Since the load short-circuit detection unit 133 can detect the two ends of the heating element 210, the anti-dry-burning switch K1 is turned on. When the terminal is short-circuited (with a certain delay), the load short-circuit detection unit 133 quickly outputs a short-circuit signal to the switch control unit 132. The switch control unit 132 controls the power switch M1 to lock and close (it will be closed even if it is still in the suction state). When the power switch M1 is opened and closed, due to the power supply capacitor 220 (which will be mentioned later), the anti-dry-burning switch K1 will be controlled to open and conduct for a period of time. After that, the anti-dry-burning switch K1 will return to being normally open. After that, even if the user draws, the power switch M1 will not be opened and conducted again because it is locked and closed.

[0105] 2. The power switch M1 is intermittently turned on via PWM, and the first heating contact VCD2 is intermittently powered. During the intermittent power supply period, the heating detection unit 234 continuously outputs a working signal, and the heating element 210 is in working condition. The intermittent power supply period includes a continuous power supply period and a continuous no-power supply period. Please refer to [link to relevant documentation]. Figure 5bWhen the heating element 210 is in operation, the first heating contact VCD2 will also be at a low level for a period of time (the period of continuous no power supply). In order to distinguish whether the low level is in operation or in non-operation, the heating detection unit 234 includes a second timing unit (not shown in the figure). The second timing unit is used to perform a second timing for the duration of the low level (the period of continuous no power supply), and resets the second timing to zero when the first heating contact VCD2 becomes high (entering the period of continuous power supply), or resets it to zero when the second timing is greater than or equal to a preset second duration threshold. When the first heating contact VCD2 changes from high level to low level, the second timing is triggered. The second timing unit performs a second timing. If the first heating contact VCD2 changes from low to high and the second timing has not reached the second duration threshold (the end of one cycle in PWM mode), it indicates that the heating element 210 is still in operation, and the second timing is reset to zero. The first timing unit 233 continues the first timing. When the second timing is greater than or equal to the second duration threshold, it indicates that the heating element 210 is not in operation. The heating detection unit 234 outputs a non-operation signal, and the second timing is reset to zero. The first timing unit 233 stops timing and then resets to zero. The second duration threshold is greater than or equal to the duration corresponding to one cycle in PWM mode. Additionally, in Figure 5b In the process, power switch M1 is intermittently turned on for the second time, and the first timing unit 233 performs the first timing. The dry-burning logic control unit 232 calculates the current time information and the duration of the first timing and compares the calculation result with the first duration threshold. After intermittently turning on for a period of time, at time t2, the dry-burning logic control unit 232 determines that the calculation result is greater than or equal to the first duration threshold, thereby generating a pre-dry-burning signal. At this time, the anti-dry-burning switch K1 is controlled to turn on and short-circuit the two ends of the heating element 210. Since the load short-circuit detection unit 133 can detect the heating element 210, the power switch M1 is activated. When terminals 10 are short-circuited (with a certain delay), the load short-circuit detection unit 133 quickly outputs a short-circuit signal to the switch control unit 132. The switch control unit 132 controls the power switch M1 to lock and close (it will close even if it is still in the suction state). When the power switch M1 is opened and closed, due to the power supply of the power supply capacitor 220 (which will be mentioned later), the anti-dry-burning switch K1 will be controlled to open and conduct for a short time. After that, the anti-dry-burning switch K1 will return to being normally open. After that, even if the user draws, the power switch M1 will not be opened and conducted again because it is locked and closed.

[0106] 3. Power switch M1 is intermittently turned on via PFM method. The specific situation is as follows: Figure 5bThe situation is similar and will not be repeated here. Here, the second duration threshold is greater than or equal to the duration corresponding to the longest cycle of the PFM method. Additionally, in the second and third methods, the dry-burning logic control unit 232 can also subtract the last second duration from the first timing duration to obtain the actual first timing duration, and then reset the first timing unit 233 to zero. Of course, it is also possible not to subtract the last second duration. Furthermore, in this embodiment, when the dry-burning logic control unit 232 generates a pre-dry-burning signal, the first timing unit 233 stops timing, the second timing unit stops timing, and then is reset to zero, and will not start timing again.

[0107] Additionally, please refer to other embodiments of this application. Figure 2 and Figure 6 At this time, the heating detection unit 234 is connected to the second heating contact GCD2, which is electrically connected to the power ground contact GCD1. Since the anti-dry-burning switch K1 is normally open, when the power switch M1 is turned on, the second heating contact GCD2 is powered, and the heating element 210 starts to work and is in working state. The second heating contact GCD2 changes from high level to low level, so the heating detection unit 234 can detect that the first heating contact VCD2 changes from high level to low level or is low level. The heating detection unit 234 determines that the heating element 210 is in working state and outputs a working signal. In this embodiment, when the user uses the electronic device, the system control unit drives the power switch M1 to turn on in three ways, and the specific situations are similar to those above. Those skilled in the art can understand how the heating detection unit 234 judges the state of the heating element 210 through conventional logical reasoning (high and low levels are the reverse of the previous situations), which will not be repeated here.

[0108] In other embodiments of this application, the heating detection unit 234 is connected to both the first heating contact VCD2 and the second heating contact GCD2. When the heating detection unit 234 detects that either the first heating contact VCD2 or the second heating contact GCD2 matches the foregoing description, the heating detection unit 234 outputs a working signal. Please refer to the foregoing description for details.

[0109] In the above embodiments, the first timing unit 233 times the working time of the entire heating element 210, that is, it performs the first timing of the entire heating state. However, this application is not limited to this. In other embodiments of this application, the first timing unit 233 may also time only the actual working time of the heating element 210 (when the anti-dry burning switch K1 is normally open). This actual working time corresponds to the heating time of the heating element 210, that is, it only times the conduction time of the power switch M1. The following describes two cases.

[0110] 1. When the power switch M1 is always on, the heating element 210 is continuously powered, indicating that the electronic device is in use. When the power switch M1 is off, the heating element 210 is no longer powered, indicating that the electronic device is not in use. In this case, there is no difference between the two timing methods.

[0111] 2. The power switch M1 is intermittently turned on via PWM, PFM, or other methods, and the heating element 210 is intermittently powered, indicating that the electronic device is in use. The intermittent power supply time includes a continuous power supply period and a continuous no-power supply period. At this time, when the power switch M1 is in the on-time (continuous power supply period), the first timing unit 233 starts the first timing. When the power switch M1 is in the off-time (continuous no-power supply period), the first timing unit 233 pauses the timing (for example, it can be controlled by the heating detection unit 234 or by other units of the liquid remaining quantity detection module 230 to pause the timing). When the power switch M1 is back in the on-time (continuous power supply period), the first timing unit 233 continues timing (the previous timing is not reset at this time). When the power switch M1 is in the off-time (continuous no power supply period), the first timing unit 233 pauses timing again, and so on. In this case, the duration of the first timing is less than the duration of the heating element 210 in the working state. When the heating element 210 stops working and enters the non-working state (how to determine entering the non-working state can be referred to the previous description), it indicates that the electronic device is not in use, and the first timing unit 233 stops timing and can be reset to zero. As for how the first timing unit 233 ultimately performs timing, it depends on the timing method during the test. The timing method of the first timing unit 233 needs to be consistent with the timing method during the test, so that the comparison results will be more accurate.

[0112] In this embodiment, please refer to Figure 7The dry-burning logic control unit 232 includes a time update subunit 2321, which is connected to the storage unit 231 and the first timing unit 233. When the heating element 210 stops working, the time update subunit 2321 calculates the current time information with the duration of the first timing unit and outputs the calculation result to the storage unit 231 to update the current time information so that the current time information can dynamically reflect the remaining amount of liquid. For example, if the current time information is 35.2s and the duration of the first timing unit is 3.5s, the calculation is an addition operation, and the calculation result is 38.7s. The time update subunit 2321 outputs 38.7s to the storage unit 231 and updates the current time information stored in the storage unit 231 from 35.2s to 38.7s. Finally, the current time information is 38.7s. In this embodiment, the reason why the heating element 210 stops working and enters the non-working state may be that it changes from the suction state to the non-suction state, or the anti-dry burning switch K1 is turned on due to the generation of a pre-dry burning signal, or the heating element 210 is not powered due to the looseness or poor contact between the heating component 200 and the power supply control component 100.

[0113] In this embodiment, the storage unit 231 stores the accumulated duration threshold. The first duration threshold is the accumulated duration threshold, which corresponds to the first liquid threshold. The accumulated duration threshold is, for example, 95%, 96%, 97%, 98%, 99%, 99.5%, or 99.9% of the total suction time obtained during the test. For example, if the liquid in the new heating component 200 is measured to be usable for 200 seconds during the test, the accumulated duration threshold is set to, for example, 190s, 192s, 194s, 196s, 198s, 199s, or 199.8s. The accumulated duration threshold is less than the total suction time obtained during the test. This processing can reduce the risk of dry burning caused by short-term heating due to the time required for comparison judgment and activation of the anti-dry-burning switch K1. Please refer to... Figure 8aThe dry-burning logic control unit 232 includes an accumulation calculation subunit 2323 and a first dry-burning judgment subunit 2322. The accumulation calculation subunit 2323 is connected to the first timing unit 233 and the storage unit 231, respectively. One input terminal of the first dry-burning judgment subunit 2322 is connected to the accumulation calculation subunit 2323, and its other input terminal is connected to an accumulation duration threshold. The accumulation duration threshold can be obtained directly from the storage unit 231 or indirectly from the storage unit 231. When the heating element 210 is working, the first timing... The first timer of the timer unit 233 gradually increases as the operation progresses. The cumulative calculation subunit 2323 receives the current time information and the duration of the first timer and adds them together. The first dry burning judgment subunit 2322 receives the calculation result of the cumulative calculation subunit 2323 and compares it with the cumulative duration threshold in real time. When the calculation result is greater than or equal to the cumulative duration threshold, it indicates that the remaining liquid is less than or equal to the first liquid threshold. At this time, the first dry burning judgment subunit 2322 generates a pre-dry burning signal, and the anti-dry burning switch K1 is turned on. For example, if the cumulative duration threshold is 199.8s and the current time is 198s, when the heating element 210 starts working, the first timing unit 233 starts timing from 0. When the timing of the first timing unit 233 increases from 0 to 0.3s, the calculation result of the cumulative calculation subunit 2323 is 198.3s. The first dry-burning judgment subunit 2322 judges that 198.3s is less than 199.8s. As the heating element 210 continues to work, when the timing of the first timing unit 233 increases to 1.5s, the calculation result is 199.5s. The first dry-burning judgment subunit 2322 judges that 199.5s is less than 199.8s. As the heating element 210 continues to work, when the timing of the first timing unit 233 increases to 1.8s, the calculation result is 199.8s. The first dry burning judgment subunit 2322 determines that the calculation result at this time is greater than or equal to 199.8s. The first dry burning judgment subunit 2322 learns that the remaining liquid in the liquid storage chamber is less than or equal to the first liquid threshold. Therefore, the first dry burning judgment subunit 2322 generates a pre-dry burning signal, the anti-dry burning switch K1 is turned on, the heating element 210 stops working, and the first timing unit 233 stops timing. At this time, the timing time of the first timing unit 233 may stop at 1.801s. The time update subunit 2321 adds 198s and 1.801s to obtain the calculation result 199.801s. The time update subunit 2321 outputs 199.801s to the storage unit 231 and updates the current time information stored in the storage unit 231 from 198s to 199.801s. Finally, the current time information is 199.801s. In this embodiment, the time update subunit 2321 and the accumulation calculation subunit 2323 can be the same unit, different units, or some units can be shared.In other embodiments of this application, the accumulated duration threshold may not be stored in the storage unit 231, but may be directly stored in the dry burning logic control unit 232.

[0114] In this embodiment, the first liquid threshold is not an actual parameter; it is characterized by an accumulated duration threshold. Specifically, this embodiment assumes that the average atomization rate of the liquid is known, for example, it can be measured experimentally. For instance, when the heating element 210 is in operation, the atomization rate of the liquid is 0.01 ml / s. When the heating element 210 operates for 10 seconds, it means that 0.1 ml of liquid has been atomized. At this time, the liquid in the heating component 200 has decreased by 0.1 ml. Assuming that the total liquid volume in the new heating component 200 is 2 ml, when the accumulated duration threshold is 199.8 seconds, it means that the first liquid threshold is 0.02 ml. For example, if the current time is 198 seconds, there is still 0.2 ml of liquid remaining in the storage chamber. When the heating element 210 operates again for 1.8 seconds (the duration of the first timing), the sum of the current time and the duration of the first timing reaches 199.8 seconds. At this time, the liquid in the storage chamber has decreased to 0.02 ml, and the first dry-burning judgment subunit 2322 generates a pre-dry-burning signal. Therefore, in this embodiment, the remaining amount of liquid in the reservoir can be assessed by timing.

[0115] In this embodiment, the first dry-burning judgment subunit 2322 continuously generates a pre-dry-burning signal. The pre-dry-burning signal directly or indirectly controls the anti-dry-burning switch K1 to turn on. However, this application is not limited to this. For other embodiments of this application, please refer to [link to other embodiments]. Figure 8bThe liquid remaining quantity detection module 230 also includes a normally open locking unit, which is connected to the dry-burning logic control unit 232, specifically to the first dry-burning judgment subunit 2322. The normally open locking unit is also connected to the control terminal of the anti-dry-burning switch K1 via the switch control terminal CO. When the accumulation calculation subunit 2323 calculates the current time information and the duration of the first timer, the first dry-burning judgment subunit 2322 compares the calculation result with a preset first duration threshold. When the comparison result is greater than or equal to the first duration threshold, the first dry-burning judgment subunit 2322 determines that a pre-dry-burning signal is generated. The normally open locking unit receives the pre-dry-burning signal and locks the output turn-on signal to the anti-dry-burning switch K1, and the anti-dry-burning switch K1 remains open. In this embodiment, when the liquid level detection module 230 is powered on, the normally closed locking unit continuously outputs an on / off signal to the anti-dry-burning switch K1. When the liquid level detection module 230 is not powered on, the normally closed locking unit stops outputting the on / off signal to the anti-dry-burning switch K1, and the anti-dry-burning switch K1 returns to its normally open state. When the same liquid level detection module 230 is powered on again, the normally closed locking unit continuously outputs the on / off signal to the anti-dry-burning switch K1, and the anti-dry-burning switch K1 is turned on again. By setting the normally closed locking unit, even if the first dry-burning judgment subunit 2322 is unable to continue sending the pre-dry-burning signal for various reasons, or if the first dry-burning judgment subunit 2322 does not continuously output the pre-dry-burning signal, the anti-dry-burning switch K1 is still locked on because the normally closed locking unit has previously received the pre-dry-burning signal. By setting it in this way, the probability of the anti-dry-burning switch K1 being turned off again due to signal interference can be reduced, and the probability of the heating element 210 being dry-burned can be further reduced. In other embodiments of this application, the normally-on locking unit can also be disposed in the dry-burning logic control unit 232, that is, the dry-burning logic control unit 232 includes a normally-on locking unit, which is connected to the first dry-burning judgment subunit 2322 and the switch control terminal CO respectively. Here, the normally-on locking unit can be, for example, an SR latch, various conventional triggers, etc. In other embodiments of this application, the liquid remaining detection module 230 can also lock and open the anti-dry-burning switch K1 in other ways. In other embodiments of this application, the liquid remaining detection module 230 also includes an indicator terminal, and the heating component 200 also includes an indicator element connected to the indicator terminal. When the first dry-burning judgment subunit 2322 generates a pre-dry-burning signal, the indicator terminal will receive a signal corresponding to the pre-dry-burning signal, so that the indicator element indicates that the liquid remaining in the heating component 200 is less than or equal to a first liquid threshold, so as to prompt the user to replace the heating component 200. The indicator element is, for example, a lamp indicator, a display screen indicator, or other conventional indicator methods.In other embodiments of this application, after the anti-dry-burning switch K1 is controlled to be turned on, the system control module 130 detects a load short circuit and controls the power switch M1 to be turned off. After that, the liquid remaining detection module 230 can stop controlling the anti-dry-burning switch K1 to continue to be turned on, and the anti-dry-burning switch K1 can be turned off.

[0116] To power the liquid remaining quantity detection module 230, please refer to [link / reference needed]. Figure 1 , Figure 3In this embodiment, the heating assembly 200 further includes a unidirectional conducting element and a power supply capacitor 220. The unidirectional conducting element is, for example, a first diode D1. The liquid remaining quantity detection module 230 includes a heating power supply terminal VDD2 and a heating ground terminal GND2. The anode of the first diode D1 is connected to the first heating contact VCD2 via the first end of the heating element 210. The first heating contact VCD2 is connected to the power supply contact VCD1. The cathode of the first diode D1 is connected to the heating power supply terminal VDD2 and the first end of the power supply capacitor 220, respectively. The second end of the power supply capacitor 220 is connected to the heating ground terminal GND2. The heating ground terminal GND2 is connected to the second heating contact GCD2. The first end of the power supply capacitor 220 is the positive terminal, and the second end is the negative terminal. In this embodiment, when the power switch M1 of the power supply control component 100 is turned on, the positive terminal of the power supply 110 forms a circuit through the power switch M1, the atomizing terminal AT, the power supply contact VCD1, the first heating contact VCD2, the first diode D1, the heating power supply terminal VDD2, the heating ground terminal GND2, the second heating contact GCD2, the power ground contact GCD1, and the negative terminal of the power supply 110 to power the liquid remaining quantity detection module 230, thereby powering the unit within the liquid remaining quantity detection module 230. In operation, for example, the first timing unit 233 can keep time, the dry burning logic control unit 232 can perform logic judgment, and at the same time, the positive terminal of the power supply 110 forms a circuit through the power switch M1, the atomizing end AT, the power supply contact VCD1, the first heating contact VCD2, the first diode D1, the first terminal of the power supply capacitor 220, the second terminal of the power supply capacitor 220, the second heating contact GCD2, the power ground contact GCD1, and the negative terminal of the power supply 110 to charge the power supply capacitor 220, so that the power supply capacitor 220 can be fully charged quickly.When power switch M1 is off (e.g., during the off-off time of PWM or PFM mode, or in a non-vacuuming state), power supply 110 cannot supply power to liquid remaining detection module 230. A circuit is formed between the first terminal of power supply capacitor 220, heating power supply terminal VDD2, heating ground terminal GND2, and the second terminal of power supply capacitor 220 to briefly power liquid remaining detection module 230. This power supply duration is typically a few milliseconds to several hundred milliseconds, sufficient to power liquid remaining detection module 230 during the off-off time of PWM or PFM mode. Furthermore, when transitioning from a vacuuming state to a non-vacuuming state (heating element 210 is not operating), power supply capacitor 220... The liquid remaining detection module 230 can also be briefly powered to continue its operation. For example, the time update subunit 2321 calculates the current time information with the duration of the first timing and outputs the result to the storage unit 231 to update the current time information in the storage unit 231. The storage unit 231 then stores the current time information. Alternatively, the dry-burning logic control unit 232 can continue to generate a pre-dry-burning signal and continue timing. When the power supply capacitor 220 finishes discharging, the liquid remaining detection module 230 stops working. At this time, the current time information stored in the storage unit 231 will not be lost due to the lack of power and will still be preserved. When the power switch M1 is turned on again, the power supply capacitor 220 can be recharged. In this embodiment, due to the unidirectional conduction element, the power supply capacitor 220 will not supply power to the heating element 210 during the off-time of the power switch M1 or when the heating element 210 is not working. This prevents the rapid release of the charge stored on the power supply capacitor 220 and does not interfere with the detection. Furthermore, since the liquid level detection module 230 can be briefly powered by the power supply capacitor 220, a separate battery is not required in the heating assembly 200 to power the liquid level detection module 230. However, this application is not limited to this. In other embodiments of this application, the power supply capacitor 220 can be replaced with a battery, which is used specifically to power the liquid level detection module 230. The liquid level detection module 230 can be continuously powered until the battery is depleted. In addition, in other embodiments of this application, the liquid level detection module 230 can be powered entirely through the power supply capacitor 220, instead of the power supply 110 directly powering the liquid level detection module 230 when the power switch M1 is turned on.

[0117] Additionally, please refer to other embodiments of this application. Figure 2The heating assembly 200 also includes a unidirectional conducting element and a power supply capacitor 220. The unidirectional conducting element is, for example, a first diode D1. The liquid remaining quantity detection module 230 includes a heating power supply terminal VDD2 and a heating ground terminal GND2. The anode of the first diode D1 is connected to a first heating contact VCD2, which is connected to a power supply contact VCD1. The power supply contact VCD1 is connected to the positive terminal of the power supply 110. The cathode of the first diode D1 is connected to the heating power supply terminal VDD2 and the first terminal of the power supply capacitor 220. The second terminal of the power supply capacitor 220 is connected to the heating ground terminal GND2. The heating ground terminal GND2 is connected to a second heating contact GCD2. The second heating contact GCD2 is connected to the second terminal of the power switch M1 via the power ground contact GCD1 and the atomizing terminal AT. The first terminal of the power switch M1 is connected to the system ground terminal GND1, which is connected to the negative terminal of the power supply 110. The principle of capacitor charging and power supply is similar to that described above and will not be repeated here.

[0118] In this embodiment, the heating detection unit 234 is connected to the first heating contact VCD2 or the second heating contact GCD2 via the detection terminal JC.

[0119] Please see Figure 9a , Figure 9b In this embodiment, the anti-dry-burning switch K1 can be an NMOS transistor or a PMOS transistor. The specific connection relationship is shown in the relevant diagrams and will not be repeated here. Additionally, in other embodiments of this application, the anti-dry-burning switch K1 can also be other switching elements in the art, which will not be repeated here. Furthermore, in other embodiments of this application, the anti-dry-burning switch K1 is an NMOS transistor. During normal operation, the control terminal of the anti-dry-burning switch K1 is also connected to the contact with the lower voltage in the second heating contact GCD2 and the first heating contact VCD2, so that the anti-dry-burning switch K1 is normally disconnected unless controlled by the liquid remaining quantity detection module 230. Furthermore, in other embodiments of this application, the anti-dry-burning switch K1 is a PMOS transistor. During normal operation, the control terminal of the anti-dry-burning switch K1 is also connected to the contact with the higher voltage in the second heating contact GCD2 and the first heating contact VCD2, so that the anti-dry-burning switch K1 is normally disconnected unless controlled by the liquid remaining quantity detection module 230.

[0120] Additionally, to detect whether the heating component 200 and the power supply control component 100 are in a separate or connected state, please refer to [link to relevant documentation]. Figure 1 and Figure 4In this embodiment, the system control module 130 further includes a separation monitoring unit 134 and a detection resistor R1. The input terminal of the separation monitoring unit 134 is connected to the second terminal of the power switch M1. One end of the detection resistor R1 is connected to the first terminal of the power switch M1, and the other end is connected to the second terminal of the power switch M1. The resistance value of the detection resistor R1 is much larger than the resistance value of the heating element 210. For example, the ratio of the resistance value of the detection resistor R1 to the resistance value of the heating element 210 is greater than 1000:1, and preferably greater than or equal to 100k:1. When the power switch M1 is off, the separation monitoring unit 134 determines whether the heating component 200 is separated from the power supply control component 100 by monitoring the voltage at the second terminal of the power switch M1. Specifically, when the heating component 200 is connected to the power supply control component 100 (taking the power MOSFET as an example), the detection resistor R1 is connected in series with the heating element 210 (the anti-dry-burning switch K1 can be open or closed, preferably open). A circuit is formed between the positive terminal of the power supply 110, the detection resistor R1, the atomizing end AT, the power supply contact VCD1, the first heating contact VCD2, the heating element 210 or the anti-dry-burning switch K1, the second heating contact GCD2, the power ground contact GCD1, and the negative terminal of the power supply 110. (Because the resistance of the detection resistor R1 is very large, the voltage at the first heating contact VCD2 is low and insufficient to drive the liquid remaining detection module 230.) When the quantity detection module 230 is not working (in this case, the first heating contact VCD2 is considered not powered), since the resistance value of the detection resistor R1 is much greater than the resistance value when the heating element 210 or the anti-dry-burning switch K1 is turned on, the separation monitoring unit 134 monitors the voltage at the second terminal of the power switch M1 (i.e., the other end of the detection resistor R1) as low. When the heating component 200 is separated from the power supply control component 100, the second terminal of the power switch M1 (i.e., the other end of the detection resistor R1) is left floating. At this time, the voltage at the second terminal of the power switch M1 is the same as or close to the voltage at the positive terminal of the power supply 110, and the separation monitoring unit 134 monitors the voltage at the second terminal of the power switch M1 as high. Additionally, in other embodiments of this application, please refer to... Figure 2When the power switch M1 is in the lower position, the separation monitoring unit 134 detects that the voltage level at the second terminal of the power switch M1 is opposite to that described above, and will not be repeated here. At this time, the positive terminal of the power supply 110, the power supply contact VCD1, the first heating contact VCD2, the heating element 210 or the anti-dry-burning switch K1, the second heating contact GCD2, the power ground contact GCD1, the atomizing end AT, the detection resistor R1, and the negative terminal of the power supply 110 form a circuit (because the resistance value of the detection resistor R1 is very large, the voltage difference between the second heating contact GCD2 and the first heating contact VCD2 is low, which is insufficient to drive the liquid remaining detection module 230, and the liquid remaining detection module 230 will not work. In this case, the first heating contact VCD2 is also considered to be unpowered). Therefore, by monitoring the voltage at the second terminal of the power switch M1, the separation monitoring unit 134 can determine whether the heating component 200 and the power supply control component 100 are connected or disconnected. In this embodiment, when the electronic device is in a suction state, the separation monitoring unit 134 does not perform monitoring, that is, it does not determine whether the heating component 200 and the power supply control component 100 are in a separated or connected state, to prevent monitoring errors caused by the power switch M1 being turned on. When the electronic device is in a non-suction state, since the power switch M1 is off, the separation monitoring unit 134 detects and determines whether the heating component 200 and the power supply control component 100 are in a separated or connected state. When the separation monitoring unit 134 detects that the heating component 200 and the power supply control component 100 are in a separated state, the separation monitoring unit 134 outputs a signal to the switch control unit 132. Even if the switch control unit 132 receives a suction signal, it controls the power switch M1 to remain off. In this embodiment, when the separation detection unit detects that the heating component 200 and the power supply control component 100 change from connection to separation, or from separation to connection, the heating component 200 may be replaced with a new heating component 200. The system control module 130 releases the lock caused by the power switch M1 being disconnected due to a load short circuit, so that the electronic device can be used normally.

[0121] In this embodiment, please continue to refer to Figure 1The system control module 130 and the power switch M1 can be fabricated on the same chip, i.e., on the same semiconductor substrate. In this case, the chip can be called a power supply control chip. The system power supply terminal VDD1 is the system power supply 110 pin, the system ground terminal GND1 is the system ground pin, the airflow terminal SW is the airflow pin, and the atomization terminal AT is the atomization pin. However, this application is not limited to this. In other embodiments of this application, the system control module 130 is fabricated on one chip, called the system control chip, and the power switch M1 is fabricated on another chip, called the power chip. In this case, the system control module 130 and the power switch M1 are located on two different semiconductor substrates. The system power supply terminal VDD1 is the system power supply 110 pin, the system ground terminal GND1 is the system ground pin, the airflow terminal SW is the airflow pin, and the atomization terminal AT is the atomization pin. The system control chip and the power chip can be packaged together to form a chip product.

[0122] In this embodiment, the liquid level detection module 230 and the anti-dry-burning switch K1 are mounted on the same chip, i.e., on the same semiconductor substrate. This chip is called the liquid level control chip. In this case, the heating power supply terminal VDD2 is the heating power supply 110 pin, the heating ground terminal GND2 is the heating ground pin, and the detection terminal JC is the detection pin. However, this application is not limited to this. In other embodiments of this application, the liquid level detection module 230 is mounted on a single chip, called the liquid level detection chip, and the anti-dry-burning switch K1 is mounted on a separate chip, called the anti-dry-burning switch chip. In this case, the liquid level detection chip and the anti-dry-burning switch chip are located on two different semiconductor substrates. In this case, the heating power supply terminal VDD2 is the heating power supply 110 pin, the heating ground terminal GND2 is the heating ground pin, the detection terminal JC is the detection pin, and the switch control terminal CO is the switch control pin. The liquid level detection chip and the anti-dry-burning switch chip can be packaged together to form a chip product.

[0123] Second Embodiment

[0124] Please see Figure 10 , Figure 10 This is a circuit diagram of the liquid remaining quantity detection module 230 of the second embodiment of this application. This embodiment is similar to the first embodiment. Therefore, the parts not described in this embodiment can be referred to the first embodiment. The main difference between this embodiment and the first embodiment is that the current time information is not the accumulated information.

[0125] Please refer to the above. Figure 1 and Figure 10In this embodiment, the liquid remaining quantity detection module 230 includes a storage unit 231, a first timing unit 233, and a dry-burning logic control unit 232. The storage unit 231 stores current time information associated with the liquid remaining quantity, meaning the current time information can be used to characterize the liquid remaining quantity. The initial value of the current time information is, for example, 200s, representing the total time the liquid can be atomized. As the liquid is atomized, the current time information is updated to gradually decrease; at this time, the current time information is, for example, 136.3s.

[0126] In this embodiment, the dry-burning logic control unit 232 includes a time update subunit 2321 (see also...). Figure 7 The time update subunit 2321 is connected to the storage unit 231 and the first timing unit 233. When the heating element 210 stops working, the time update subunit 2321 calculates the current time information with the duration of the first timing and outputs the calculation result to the storage unit 231 to update the current time information so that the current time information can dynamically reflect the remaining amount of liquid. For example, if the current time information is 162.7s and the duration of the first timing is 3.2s, the calculation is a subtraction operation, and the calculation result is 159.5s. The time update subunit 2321 outputs 159.5s to the storage unit 231 and updates the current time information stored in the storage unit 231 from 162.7s to 159.5s. Finally, the current time information is 159.5s. In this embodiment, the heating element 210 may stop working because the power switch M1 is in a non-suction state or detects a load short circuit, or because the anti-dry burning switch K1 is turned on due to the generation of a pre-dry burning signal, or because the heating component 200 and the power supply control component 100 are loose or have poor contact, resulting in the heating element 210 not being powered.

[0127] In this embodiment, the storage unit 231 stores the cumulative decrement time threshold. The first time threshold is the cumulative decrement time threshold, which corresponds to the first liquid threshold. The cumulative decrement time threshold is, for example, 5%, 4%, 3%, 2%, 1%, 0.5%, or 0.1% of the total suction time obtained during testing. For instance, if the liquid in the new heating component 200 is measured to be usable for 200 seconds during testing, the cumulative decrement time threshold would be, for example, 10 seconds, 8 seconds, 6 seconds, 4 seconds, 2 seconds, 1 second, 0.5 seconds, or 0.2 seconds. The cumulative decrement time threshold must be greater than 0. This processing reduces the risk of dry burning caused by short-term heating due to the time required for comparison judgment and activation of the anti-dry-burning switch K1. Please continue to participate. Figure 10The dry-burning logic control unit 232 includes a cumulative reduction calculation subunit 2325 and a second dry-burning judgment subunit 2324. The cumulative reduction calculation subunit 2325 is connected to the first timing unit 233 and the storage unit 231, respectively. One input terminal of the second dry-burning judgment subunit 2324 is connected to the cumulative reduction calculation subunit 2325, and the other input terminal is connected to the cumulative reduction duration threshold. The cumulative reduction duration threshold can be obtained directly or indirectly from the storage unit 231. When the heating element 210 is working, the first timing of the first timing unit 233 gradually increases as heating progresses. The cumulative reduction calculation subunit 2325 receives the current time information and the duration of the first timing and performs a subtraction calculation. The second dry-burning judgment subunit 2324 receives the calculation result of the cumulative reduction calculation subunit 2325 and compares it with the cumulative reduction duration threshold in real time. When the calculation result is less than or equal to the cumulative reduction duration threshold, it indicates that the remaining liquid is less than or equal to the first liquid threshold. At this time, the first dry-burning judgment subunit 2322 generates a pre-dry-burning signal to the normally closed locking unit. For example, if the cumulative reduction time threshold is 1 second and the current time is 3.1 seconds, when the heating element 210 starts working, the first timing unit 233 starts counting from 0. When the timing of the first timing unit 233 increases from 0 to 1 second, the calculation result of the cumulative reduction calculation subunit 2325 is 2.1 seconds. The second dry burning judgment subunit 2324 judges that 2.1 seconds is greater than 1 second. As the heating element 210 continues to work, when the timing of the first timing unit 233 increases to 2 seconds, the calculation result is 1 second. At 1.1s, the first dry-burning judgment subunit 2322 determines that 1.1s is still greater than 1s. As the heating element 210 continues to operate, when the timing of the first timing unit 233 increases to 2.1s, the calculated result is 1s. The second dry-burning judgment subunit 2324 determines that the calculated result at this time is less than or equal to the cumulative reduction time threshold of 1s. The second dry-burning judgment subunit 2324 knows that the remaining liquid in the liquid storage chamber is less than or equal to the first liquid threshold, and thus the second dry-burning judgment subunit 2324 generates a pre-dry-burning signal. In this embodiment, the first liquid threshold is not an actual existing parameter; the first liquid threshold is characterized by the cumulative reduction time threshold. Furthermore, after the second dry-burning judgment subunit 2324 generates a pre-dry-burning signal, the anti-dry-burning switch K1 is quickly turned on, the heating element 210 stops working, and the first timing unit 233 stops timing. At this time, the timing time of the first timing unit 233 may stop at 2.1005s. The time update subunit 2321 subtracts 3.1s from 2.1005s to obtain the calculation result 0.9995s. The time update subunit 2321 outputs 0.9995s to the storage unit 231 and updates the current time information stored in the storage unit 231 from 3.1s to 0.9995s. Finally, the current time information is 0.9995s.In this embodiment, the time update subunit 2321 and the cumulative decrement calculation subunit 2325 can be the same unit, different units, or some units can be shared. Furthermore, in other embodiments of this application, the cumulative decrement duration threshold may not be stored in the storage unit 231, but can be directly stored in the dry-burning logic control unit 232.

[0128] Third Embodiment

[0129] Please see Figure 11 , Figure 11 This is a circuit block diagram of an electronic device according to the third embodiment of this application. This embodiment is similar to the first and second embodiments. Therefore, the parts not described in this embodiment can be referred to the first and second embodiments. The main difference between this embodiment and the first and second embodiments is that the heating component also supports blind insertion.

[0130] Please see Figure 11 In this embodiment, the heating component 300 supports blind insertion. That is, when the heating component 300 is connected to the power supply control component 100, the first heating contact VCD2 can be connected to the power supply contact VCD1, and the second heating contact GCD2 can be connected to the power ground contact GCD1. Alternatively, the second heating contact GCD2 can be connected to the power supply contact VCD1, and the first heating contact VCD2 can be connected to the power ground contact GCD1. The heating component 300 can work normally in both cases.

[0131] To accommodate blind insertion, in this embodiment, the heating assembly 300 includes multiple unidirectional conductive elements, including a first diode D1, a second diode D2, a third diode D3, a fourth diode D4, and a power supply capacitor 220. The liquid remaining quantity detection module 230 includes a heating power supply terminal VDD2 and a heating ground terminal GND2. The anode of the first diode D1 is connected to the first heating contact VCD2, the first end of the heating element 210, and the cathode of the third diode D3. The cathode of the first diode D1 is connected to the heating power supply terminal VDD2, the first end of the power supply capacitor 220, and the cathode of the second diode D2. The anode of the second diode D2 is connected to the cathode of the fourth diode D4 and the second heating contact GCD2. The anode of the third diode D3 is connected to the second end of the power supply capacitor 220 and the anode of the fourth diode D4. The second end of the power supply capacitor 220 is connected to the heating ground terminal GND2. Alternatively, in other embodiments of this application, the first diode D1, the second diode D2, the third diode D3, and the fourth diode D4 can be replaced with other suitable unidirectional conductive elements.

[0132] Therefore, when the heating component 300 is connected to the power supply control component 100, and the first heating contact VCD2 is connected to the power supply contact VCD1, and the second heating contact GCD2 is connected to the power ground contact GCD1, the anti-dry-burning switch K1 is normally on. When the power switch M1 is turned on, the positive terminal of the power supply 110, the power switch M1, the atomizing terminal AT, the power supply contact VCD1, the first heating contact VCD2, the first diode D1, the heating power supply terminal VDD2, the liquid remaining quantity detection module 230, the heating ground terminal GND2, the fourth diode D4, the second heating contact GCD2, the power ground contact GCD1, and the negative terminal of the power supply 110 form a circuit to supply liquid. The liquid remaining quantity detection module 230 is powered. At the same time, the positive terminal of the power supply 110, the power switch M1, the atomizing terminal AT, the power supply contact VCD1, the first heating contact VCD2, the first diode D1, the power supply capacitor 220, the fourth diode D4, the second heating contact GCD2, the power ground contact GCD1, and the negative terminal of the power supply 110 form a circuit to charge the power supply capacitor 220. When the power switch M1 is turned off, the first terminal of the power supply capacitor 220, the heating power supply terminal VDD2, the liquid remaining quantity detection module 230, the heating ground terminal GND2, and the second terminal of the power supply capacitor 220 form a discharge circuit to power the liquid remaining quantity detection module 230 so that it can work.

[0133] When the heating component 300 is connected to the power supply control component 100, and the second heating contact GCD2 is connected to the power supply contact VCD1, and the first heating contact VCD2 is connected to the power ground contact GCD1, the anti-dry-burning switch K1 is not conducting under normal use. When the power switch M1 is turned on, the positive terminal of the power supply 110, the power switch M1, the atomizing terminal AT, the power supply contact VCD1, the second heating contact GCD2, the second diode D2, the heating power supply terminal VDD2, the liquid remaining quantity detection module 230, the heating ground terminal GND2, the third diode D3, the first heating contact VCD2, the power ground contact GCD1, and the negative terminal of the power supply 110 form a circuit to supply liquid. The remaining liquid level detection module 230 is powered to operate. Simultaneously, a circuit is formed between the positive terminal of power supply 110, power switch M1, atomizing terminal AT, power supply contact VCD1, second heating contact GCD2, second diode D2, power supply capacitor 220, third diode D3, first heating contact VCD2, power ground contact GCD1, and the negative terminal of power supply 110 to charge the power supply capacitor 220. When power switch M1 is off, a discharge circuit is formed between the first terminal of power supply capacitor 220, heating power supply terminal VDD2, the remaining liquid level detection module 230, heating ground terminal GND2, and the second terminal of power supply capacitor 220 to power the remaining liquid level detection module 230 to operate. Additionally, for other embodiments of this application, please refer to... Figure 12When power switch M1 is in the down position, power supply 110 supplies power to liquid remaining quantity detection module 230, charges power supply capacitor 220, and power supply capacitor 220 supplies power to liquid remaining quantity detection module 230. The specific principle is the same as... Figure 12 Similarly, I will not go into details here.

[0134] To facilitate the liquid remaining quantity detection module 230 in determining whether the heating element 210 is in a working or non-working state, please refer to [link to relevant documentation]. Figure 11 In this embodiment, the liquid remaining quantity detection module 230 is connected to both the first heating contact VCD2 and the second heating contact GCD2 via the detection terminal JC. When the heating component 300 is connected to the power supply control component 100, the liquid remaining quantity detection module 230 can determine whether the heating element 210 is in a working state or not through the signal from the detection terminal JC. In this embodiment, two separate detection terminals JC are provided.

[0135] In this embodiment, the heating element 210 does not distinguish polarity, but the anti-dry-burning switch K1 does. To prevent the anti-dry-burning switch K1 from not being effectively turned off, for example in... Figure 9a When the second heating contact GCD2 is connected to the power supply contact VCD1, and the first heating contact VCD2 is connected to the power ground contact GCD1, even if the liquid remaining quantity detection module 230 does not output an on / off signal to the control terminal CO of the anti-dry-burning switch K1, the anti-dry-burning switch K1 will be turned on due to the presence of the body diode of the anti-dry-burning switch K1. This causes the heating element 210 to be short-circuited and unable to work properly. Similarly, for example, in Figure 9b When the second heating contact GCD2 is connected to the power supply contact VCD1 and the first heating contact VCD2 is connected to the power ground contact GCD1, even if the liquid remaining quantity detection module 230 does not output an on-conduction signal to the control terminal CO of the anti-dry-burning switch K1, the anti-dry-burning switch K1 will still be turned on due to the presence of the body diode of the anti-dry-burning switch K1, and cannot be effectively turned off.

[0136] To overcome the above problems and achieve blind insertion functionality, please refer to the following embodiment: Figure 13aThe anti-dry-burning switch K1 includes two NMOS transistors connected in series, referred to as the upper NMOS transistor and the lower NMOS transistor. The switch control terminal CO includes a first switch control terminal CO and a second switch control terminal CO. The source of the lower NMOS transistor is connected to the second heating contact GCD2, which is used to connect to the power ground contact GCD1 or the power supply contact VCD1. The drain of the lower NMOS transistor is connected to the drain of the upper NMOS transistor. The source of the upper NMOS transistor is connected to the first heating contact VCD2, which is used to connect to the power supply contact VCD1 or the power ground contact GCD1. The control terminal of the lower NMOS transistor is connected to the first switch control terminal CO, and the control terminal of the upper NMOS transistor is connected to the second switch control terminal CO. In this embodiment, when the voltages of both the first switch control terminal CO and the second switch control terminal CO are 0V or close to 0V (for example, in the case that the liquid level detection module 230 is not powered and therefore not working), since both the upper and lower NMOS transistors are turned off, the parasitic diodes of the two NMOS transistors cannot form a circuit. At this time, the anti-dry-burning switch K1 can be effectively turned off. When the liquid level detection module 230 is working and no pre-dry-burning signal is generated, both the first switch control terminal CO and the second switch control terminal CO output a turn-off signal, thereby turning off both the upper and lower NMOS transistors, and the anti-dry-burning switch K1 is turned off. Furthermore, when the liquid remaining quantity detection module 230 can effectively determine which of the first heating contact VCD2 and the second heating contact GCD2 is connected to the power supply contact VCD1, one of the first switch control terminal CO and the second switch control terminal CO can output a turn-off signal. For example, when the first heating contact VCD2 is connected to the power supply contact VCD1, the first switch control terminal CO outputs a turn-off signal, the lower NMOS transistor is turned off, and the anti-dry-burning switch K1 can be turned off. When the second heating contact GCD2 is connected to the power supply contact VCD1, the second switch control terminal CO outputs a turn-off signal, the upper NMOS transistor is turned off, and the anti-dry-burning switch K1 can be turned off. Therefore, this embodiment can effectively support blind insertion. In addition, in other embodiments of this application, the control terminal of the lower NMOS transistor is connected to the second heating contact GCD2 via a resistor, and the control terminal of the upper NMOS transistor is connected to the first heating contact VCD2 via a resistor, which can disconnect the anti-dry-burning switch K1 during normal operation.

[0137] Additionally, please refer to other embodiments of this application. Figure 13bThe anti-dry-burning switch K1 includes two PMOS transistors connected in series, referred to as the upper PMOS transistor and the lower PMOS transistor. The switch control terminal CO includes a first switch control terminal CO and a second switch control terminal CO. The source of the upper PMOS transistor is connected to the first heating contact VCD2, which is used to connect to the power supply contact VCD1 or the power ground contact GCD1. The drain of the upper PMOS transistor is connected to the drain of the lower PMOS transistor. The source of the lower PMOS transistor is connected to the first end of the heating element 210. The second end of the heating element 210 is connected to the second heating contact GCD2, which is used to connect to the power ground contact GCD1 or the power supply contact VCD1. The control terminal of the upper PMOS transistor is connected to the first switch control terminal CO, and the control terminal of the lower PMOS transistor is connected to the second switch control terminal CO. In this embodiment, the control terminal of the lower PMOS transistor is connected to the second heating contact GCD2 via a resistor, and the control terminal of the upper PMOS transistor is connected to the first heating contact VCD2 via a resistor. During normal operation, this allows the anti-dry-burning switch K1 to be turned off. When the liquid remaining quantity detection module 230 is working and no pre-dry-burning signal is generated, both the first switch control terminal CO and the second switch control terminal CO output off-state signals, thereby turning off both the upper and lower PMOS transistors, and effectively turning off the anti-dry-burning switch K1. Furthermore, when the liquid remaining quantity detection module 230 can effectively determine which of the first heating contact VCD2 and the second heating contact GCD2 is connected to the power supply contact VCD1, and no pre-dry burning signal is generated, one of the first switch control terminal CO and the second switch control terminal CO can output a direct shutdown signal. For example, when the first heating contact VCD2 is connected to the power supply contact VCD1, the second switch control terminal CO is output a shutdown signal, the upper PMOS transistor is turned off, and the anti-dry burning switch K1 can be effectively shut off. When the second heating contact GCD2 is connected to the power supply contact VCD1, the first switch control terminal CO is output a shutdown signal, the lower PMOS transistor is turned off, and the anti-dry burning switch K1 can be effectively shut off. Therefore, this embodiment can effectively support blind insertion.

[0138] Additionally, please refer to other embodiments of this application. Figure 13cThe anti-dry-burning switch K1 includes a main NMOS transistor KN and a substrate switching NMOS transistor. The substrate switching NMOS transistor is a first NMOS transistor KN11 and a second NMOS transistor KN12. The substrate switching NMOS transistor is used to switch the correct bias of the substrate of the main NMOS transistor KN. The first terminal of the main NMOS transistor KN is connected to the second heating contact GCD2. The second heating contact GCD2 is used to connect to the power ground contact GCD1 or the power supply contact VCD1. The second terminal of the main NMOS transistor KN is connected to the second terminal of the heating element 210. The first terminal of the heating element 210 is connected to the first heating contact VCD2. The first heating contact VCD2 is used to correspond to the power supply contact GCD1. The power supply contact VCD1 or the power ground contact GCD1 is connected. The control terminal of the main NMOS transistor KN is connected to the switch control terminal CO. The source of the first NMOS transistor KN11 is connected to the substrate of the main NMOS transistor KN, and the drain of the first NMOS transistor KN11 is connected to the first terminal of the main NMOS transistor KN. The control terminal of the first NMOS transistor KN11 is connected to the liquid level detection module 230. The source of the second NMOS transistor KN12 is connected to the substrate of the main NMOS transistor KN, and the drain of the second NMOS transistor KN12 is connected to the second terminal of the main NMOS transistor KN. The control terminal of the second NMOS transistor KN12 is connected to the liquid level detection module 230. In this embodiment, when the voltages of the switch control terminal CO, the first substrate control terminal, and the second substrate control terminal are all 0V or close to 0V (for example, in the case that the liquid level detection module 230 is not powered to prevent it from working), the anti-dry-burning switch K1 is normally open. When the liquid level detection module 230 is working and no pre-dry-burn signal is generated, the switch control terminal CO outputs a turn-off signal, and the main NMOS transistor KN is turned off. Simultaneously, under the control of the liquid level detection module 230, one of the first NMOS transistors KN11 and KN12 is turned on, while the other is turned off. For example, when the first heating contact VCD2 is connected to the power supply contact VCD1, and no pre-dry-burn signal is generated, the switch control terminal CO outputs a turn-off signal. At the same time, the first NMOS transistor KN11 is turned on, and the second NMOS transistor KN12 is turned off. In this case, the anti-dry-burn switch K1 can be effectively turned off. When the second heating contact GCD2 is connected to the power supply contact VCD1, and no pre-dry-burn signal is generated, the switch control terminal CO outputs a turn-off signal. Simultaneously, the second NMOS transistor KN12 is turned on, and the first NMOS transistor KN11 is turned off. In this case, the anti-dry-burn switch K1 can be effectively turned off. Therefore, this embodiment can also effectively support blind insertion.In this embodiment, the liquid remaining quantity detection module 230 further includes a first substrate control terminal and a second substrate control terminal. The control terminal of the first NMOS transistor KN11 is connected to the first substrate control terminal, and the control terminal of the second NMOS transistor KN12 is connected to the second substrate control terminal. Whether the first NMOS transistor KN11 and the second NMOS transistor KN12 are turned on is controlled by the liquid remaining quantity detection module 230. Additionally, in other embodiments of this application, the control terminal of the second NMOS transistor KN12 is connected to the second heating contact GCD2, and the control terminal of the first NMOS transistor KN11 is connected to the first heating contact VCD2, which can also effectively switch substrates.

[0139] Additionally, please refer to other embodiments of this application. Figure 13d The anti-dry-burning switch K1 includes a main PMOS transistor KP and a substrate switching PMOS transistor. The substrate switching PMOS transistor is a first PMOS transistor KP11 and a second PMOS transistor KP12. The substrate switching PMOS transistor is used to switch the correct bias of the substrate of the main PMOS transistor KP. The control terminal of the main PMOS transistor KP is connected to the contact with the higher voltage between the first heating contact VCD2 and the second heating contact GCD2 via a resistor. The connection method and principle of the main PMOS transistor KP, the first PMOS transistor KP11, and the second PMOS transistor KP12 can be referred to the above embodiment, and will not be repeated here. In addition, in other embodiments of this application, the control terminal of the first PMOS transistor KP11 is connected to the second heating contact GCD2, and the control terminal of the second PMOS transistor KP12 is connected to the first heating contact VCD2, which can also effectively switch the substrate.

[0140] Additionally, please refer to other embodiments of this application. Figure 13e For details on the anti-dry-burning switch K1, please refer to [link / reference]. Figure 8a , Figure 8b The heating assembly 300 also includes a polarity switching circuit 240, which comprises two NMOS transistors and two PMOS transistors. For specific connection details, please refer to [link to relevant documentation]. Figure 13eAs will not be elaborated further here, after the polarity of the first heating contact VCD2 and the second heating contact GCD2 is reversed by the polarity conversion circuit 240, regardless of whether the first heating contact VCD2 is connected to the power supply contact VCD1 and the second heating contact GCD2 is connected to the power ground contact GCD1, or whether the second heating contact GCD2 is connected to the power supply contact VCD1 and the first heating contact VCD2 is connected to the power ground contact GCD1, the first end (upper end in the figure) of the heating element 210 is always positive and the second end (lower end in the figure) is always negative. This effectively supports blind insertion. In addition, in other embodiments of this application, the control terminal of the anti-dry-burning switch K1 is connected to the second heating contact GCD2 or the first heating contact VCD2 via a resistor as needed, so that the anti-dry-burning switch K1 can be turned off during normal operation.

[0141] In addition, in other embodiments of this application, those skilled in the art can also implement the blind insertion function in other ways, which will not be described in detail here.

[0142] Fourth embodiment

[0143] Please see Figure 14a , Figure 14a This is a circuit block diagram of the heating component according to the fourth embodiment of this application. This embodiment is similar to the first and second embodiments. Therefore, the parts not described in this embodiment can be referred to the first and second embodiments. The main difference between this embodiment and the first and second embodiments is that the pre-dry burning signal can also be sent to the power supply control component.

[0144] Please refer to the following: Figure 1 and Figure 14a The heating component 500 includes a second communication contact TXD2, which is connected to the dry-burning logic control unit 232 via a signal terminal XH. The power supply control component 400 includes a first communication contact TXD1, which is connected to the system control module 130. The first communication contact TXD1 and the second communication contact TXD2 are electrically connected. The power supply control component 400 and the heating component 500 can communicate in a timely manner through the first communication contact TXD1 and the second communication contact TXD2. The communication signal includes a pre-dry-burning signal sent by the heating component 500 to the power supply control component 400. After the system control module 130 receives the pre-dry-burning signal or the corresponding signal through the first communication contact TXD1, the switch control unit 132 controls the power switch M1 to open and turn off. At this time, it is not necessary to detect a load short circuit through the load short circuit detection unit 133 before controlling the power switch M1 to open and turn off, which makes turning off the power switch M1 more timely. In addition, the communication signal can also be an operating signal sent by the power supply control component 400 to the heating component 500, indicating that the electronic device is in a suction state.

[0145] Additionally, please refer to other embodiments of this application. Figure 14b The heating component 500 includes a second communication unit 235, which is connected to the dry-burning logic control unit 232 via a signal terminal XH. The power supply control component 400 includes a first communication unit 135, which is connected to the system control module 130. The first communication unit 135 and the second communication unit 235 can communicate wirelessly. The power supply control component 400 and the heating component 500 can communicate via the first communication unit 135 and the second communication unit 235. The communication signals include a pre-dry-burning signal sent by the heating component 500 to the power supply control component 400, and a working signal sent by the power supply control component 400 to the heating component 500, indicating that the electronic device is in a suction state. Here, the first communication unit 135 and the second communication unit 235 themselves, as well as the specific methods for implementing wireless communication, are conventional technologies in the art and will not be described in detail here.

[0146] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is merely an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. Furthermore, the specific names of the functional units and modules are only for easy differentiation and are not intended to limit the scope of protection of this application. The specific working process of the units and modules in the above system can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0147] It should be understood that "a plurality of" as used herein refers to two or more. Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0148] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus embodiments, since they are basically similar to the method embodiments, the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0149] The above-disclosed embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of this application. Therefore, any equivalent variations made in accordance with the claims of this application shall still fall within the scope of this application.

Claims

1. A heating assembly with switches connected in parallel, the heating assembly being detachably connected to a power supply control assembly, characterized in that, The heating component includes: A liquid storage chamber, used to store liquids; The heating element has a working state and a non-working state. In the working state, it is used to atomize liquid to generate aerosol. The first heating contact and the second heating contact are used for contact-type electrical connection with the power supply control component. The first heating contact is electrically connected to the first end of the heating element, and the second heating contact is electrically connected to the second end of the heating element. An anti-dry-burning switch is connected in parallel with the heating element; A liquid remaining quantity detection module is connected to the control terminal of the anti-dry-burning switch. The liquid remaining quantity detection module is used to determine whether a pre-dry-burning signal is generated. The pre-dry-burning signal is used to indicate that the liquid remaining quantity is less than or equal to a first liquid threshold. The pre-dry-burning signal is used to turn on the anti-dry-burning switch so that the heating element is short-circuited and stops working to be in a non-working state.

2. The heating assembly according to claim 1, characterized in that, When the heating element is in operation and the dry burning logic control unit does not generate a pre-dry burning signal, the anti-dry burning switch remains open.

3. The heating assembly according to claim 1, characterized in that, The liquid remaining amount detection module includes: A storage unit for storing current time information associated with the remaining liquid level; The first timing unit is used to perform a first timing of at least a portion of the duration during which the heating element is in operation; The dry-burning logic control unit is connected to the storage unit and the first timing unit, and is also connected to the control terminal of the anti-dry-burning switch. The dry-burning logic control unit determines whether to generate a pre-dry-burning signal based on the current time information and the duration of the first timing.

4. The heating assembly according to claim 3, characterized in that, The dry-burning logic control unit calculates the current time information and the duration of the first timer, and compares the calculation result with a preset first duration threshold. The dry-burning logic control unit determines whether to generate a pre-dry-burning signal based on the comparison result, wherein the first duration threshold corresponds to the first liquid threshold.

5. The heating assembly according to claim 4, characterized in that, The storage unit or the dry-burning logic control unit stores an accumulated duration threshold. The first duration threshold shown is the accumulated duration threshold. The dry-burning logic control unit includes an accumulation calculation subunit and a first dry-burning judgment subunit. The accumulation calculation subunit is connected to the first timing unit and the storage unit. One input terminal of the first dry-burning judgment subunit is connected to the accumulation calculation subunit, and its other input terminal is connected to the accumulated duration threshold. The accumulation calculation subunit receives the current time information and the duration of the first timing unit and adds them together. The first dry-burning judgment subunit receives the calculation result from the accumulation calculation subunit and compares it with the accumulated duration threshold. When the calculation result is greater than or equal to the accumulated duration threshold, a pre-dry-burning signal is determined to be generated; or... The storage unit or the logic control unit stores the cumulative duration threshold, and the first duration threshold shown is the cumulative duration threshold. The logic control unit includes a cumulative calculation subunit and a second dry burning judgment subunit. The cumulative calculation subunit is connected to the first timing unit and the storage unit. One input terminal of the second dry burning judgment subunit is connected to the cumulative calculation subunit, and the other input terminal is connected to the cumulative duration threshold. The cumulative calculation subunit receives the current time information and the duration of the first timing and performs a subtraction calculation. The second dry burning judgment subunit receives the calculation result of the cumulative calculation subunit and compares it with the cumulative duration threshold. When the calculation result is less than or equal to the cumulative duration threshold, a pre-dry burning signal is determined to be generated.

6. The heating assembly according to claim 1, characterized in that, The anti-dry-burning switch includes an NMOS transistor, a PMOS transistor, a field-effect transistor, or a bipolar transistor; or... The anti-dry-burning switch is normally open when the liquid remaining quantity detection module is not working; or... The anti-dry-burning switch includes an NMOS transistor. Its source is connected to the second terminal of the heating element, its drain is connected to the first terminal of the heating element, and its gate is connected to the liquid remaining quantity detection module; or... The anti-dry-burning switch includes a PMOS transistor. The source of the anti-dry-burning switch is connected to the first end of the heating element, the drain is connected to the second end of the heating element, and the gate is connected to the liquid remaining quantity detection module.

7. The heating assembly according to claim 1, characterized in that, The heating assembly further includes a polarity conversion unit. One input terminal of the polarity conversion unit is connected to a first heating contact, and its other input terminal is connected to a second heating contact. Its first output terminal is positive, and its second output terminal is negative. The first output terminal is connected to a first end of the heating element, and its second output terminal is connected to a second end of the heating element; or... The anti-dry-burning switch includes an upper NMOS transistor and a lower NMOS transistor connected in series. The source of the lower NMOS transistor is connected to the second terminal of the heating element, and the drain of the lower NMOS transistor is connected to the drain of the upper NMOS transistor. The source of the upper NMOS transistor is connected to the first terminal of the heating element. The control terminals of both the lower and upper NMOS transistors are connected to the liquid remaining quantity detection module; or, The anti-dry-burning switch includes an upper PMOS transistor and a lower PMOS transistor connected in series. The source of the upper PMOS transistor is connected to the first terminal of the heating element, the drain of the upper PMOS transistor is connected to the drain of the lower PMOS transistor, and the source of the lower PMOS transistor is connected to the second terminal of the heating element. The control terminals of both the upper and lower PMOS transistors are connected to the liquid remaining quantity detection module; or, The anti-dry-burning switch includes a main NMOS transistor and a substrate-switching NMOS transistor. The substrate-switching NMOS transistor is used to switch the bias of the substrate of the main NMOS transistor. The substrate-switching NMOS transistor includes a first NMOS transistor and a second NMOS transistor. The first terminal of the main NMOS transistor is connected to the second terminal of the heating element, and the second terminal of the main NMOS transistor is connected to the first terminal of the heating element. The source of the first NMOS transistor is connected to the substrate of the main NMOS transistor, and the drain of the first NMOS transistor is connected to the first terminal of the main NMOS transistor. The source of the second NMOS transistor is connected to the substrate of the main NMOS transistor, and the drain of the second NMOS transistor is connected to the second terminal of the main NMOS transistor. The control terminal of the main NMOS transistor is connected to the liquid level detection module. The control terminal of the second NMOS transistor is connected to the liquid level detection module or to a second heating contact. The control terminal of the first NMOS transistor is connected to the liquid level detection module or to a first heating contact. Alternatively... The anti-dry-burning switch includes a main PMOS transistor and a substrate-switching PMOS transistor. The substrate-switching PMOS transistor is used to switch the bias of the substrate of the main PMOS transistor. The substrate-switching PMOS transistor includes a first PMOS transistor and a second PMOS transistor. The first terminal of the main PMOS transistor is connected to the first terminal of the heating element, and the second terminal of the main PMOS transistor is connected to the second terminal of the heating element. The drain of the first PMOS transistor is connected to the substrate of the main PMOS transistor, and the source of the first PMOS transistor is connected to the first terminal of the main PMOS transistor. The drain of the second PMOS transistor is connected to the substrate of the main PMOS transistor, and the source of the second PMOS transistor is connected to the second terminal of the main PMOS transistor. The control terminal of the main PMOS transistor is connected to the liquid remaining quantity detection module. The control terminal of the first PMOS transistor is connected to the liquid remaining quantity detection module or to the second heating contact. The control terminal of the second PMOS transistor is connected to the liquid remaining quantity detection module or to the first heating contact.

8. The heating assembly according to any one of claims 1-7, characterized in that, The liquid remaining quantity detection module includes a normally open locking unit, which is connected to the control terminal of the anti-dry burning switch. Several burning logic control units determine the generation of a pre-dry burning signal. When the liquid remaining quantity detection module is working, the normally open locking unit locks the output conduction signal to the control terminal of the anti-dry burning switch to keep it open and conducting.

9. The heating assembly according to any one of claims 1-7, characterized in that, The heating assembly further includes a unidirectional conducting element and a power supply capacitor. The unidirectional conducting element includes a first diode. The liquid remaining quantity detection module includes a heating power supply terminal and a heating ground terminal. The anode of the first diode is connected to a first heating contact, which is connected to the power supply contact of the power supply control assembly. The cathode of the first diode is connected to both the heating power supply terminal and the first terminal of the power supply capacitor. The second terminal of the power supply capacitor is connected to the heating ground terminal, which is connected to the second heating contact. Alternatively... The heating assembly includes multiple unidirectional conducting elements and a power supply capacitor. The multiple unidirectional conducting elements include a first diode, a second diode, a third diode, and a fourth diode. The liquid remaining quantity detection module includes a heating power supply terminal and a heating ground terminal. The anode of the first diode is connected to the first heating contact, the first end of the heating element, and the cathode of the third diode. The cathode of the first diode is connected to the heating power supply terminal, the first end of the power supply capacitor, and the cathode of the second diode. The anode of the second diode is connected to the cathode of the fourth diode, the second heating contact, and the second end of the heating element. The anode of the third diode is connected to the second end of the power supply capacitor and the anode of the fourth diode. The second end of the power supply capacitor is connected to the heating ground terminal.

10. An electronic device, characterized in that, include: The heating assembly as described in any one of claims 1-9; A power supply control component for detachable connection with a heating component, the power supply control component comprising: a power source; The system control module is used to connect to the positive and negative terminals of the power supply; The system includes a power switch, a power supply contact, and a power ground contact. The control terminal of the power switch is used to connect to a system control module. Its first terminal is connected to the positive terminal of the power supply, and its second terminal is connected to the power supply contact. The power ground contact is connected to the negative terminal of the power supply. The power supply contact is connected to one of a first heating contact and a second heating contact, and the power ground contact is connected to the other of the first and second heating contacts. Alternatively, the control terminal of the power switch is used to connect to the system control module. Its first terminal is connected to the negative terminal of the power supply, and its second terminal is connected to the power ground contact. The power supply contact is connected to the positive terminal of the power supply, and the power supply contact is connected to one of the first and second heating contacts, and the power ground contact is connected to the other of the first and second heating contacts. Specifically, when the power supply control component is connected to the heating component and the system control module controls the power switch to be turned on, the power supply provides power to the heating component; when the power supply control component is connected to the heating component and the system control module controls the power switch to be turned off, the power supply stops providing power to the heating component.

11. The electronic device according to claim 10, characterized in that, The system control module also includes a load short-circuit detection unit, which is connected to the second terminal of the power switch. When the load short-circuit detection unit determines that the heating component is in a short-circuit state by the current flowing through the second terminal of the power switch or by the voltage through the second terminal of the power switch, the load short-circuit detection unit outputs a short-circuit signal, and the system control module controls the power switch to lock and disconnect.

12. The electronic device according to claim 11, characterized in that, The system control module further includes a separation monitoring unit and a detection resistor. The separation monitoring unit is connected to the second terminal of the power switch and is used to monitor whether the heating component is connected to the power supply control component. One end of the detection resistor is connected to the first terminal of the power switch, and the other end of the detection resistor is connected to the second terminal of the power switch. The ratio of the resistance value of the detection resistor to the resistance value of the heating element is greater than 1000:

1. The separation monitoring unit does not monitor when the heating element is in the working state. When the separation detection unit detects that the heating component and the power supply control component change from a separated state to a connected state or from a connected state to a separated state, the system control module releases the lock of the power switch disconnection.

13. A liquid remaining quantity control circuit, characterized in that, include: An anti-dry-burning switch is used to connect in parallel with the heating element; A liquid remaining quantity detection module is connected to the control terminal of the anti-dry-burning switch. The liquid remaining quantity detection module is used to determine whether a pre-dry-burning signal is generated. The pre-dry-burning signal is used to indicate that the liquid remaining quantity is less than or equal to a first liquid threshold. The pre-dry-burning signal is used to turn on the anti-dry-burning switch so that the heating element is short-circuited and stops working to be in a non-working state.

14. The liquid remaining amount control circuit according to claim 13, characterized in that, The liquid remaining amount detection module includes: A storage unit for storing current time information associated with the remaining liquid level; The first timing unit is used to perform a first timing of at least a portion of the duration during which the heating element is in operation; The dry-burning logic control unit is connected to the storage unit and the first timing unit, and is also connected to the control terminal of the anti-dry-burning switch. The dry-burning logic control unit determines whether to generate a pre-dry-burning signal based on the current time information and the duration of the first timing.

15. The liquid remaining amount control circuit according to claim 13 or 14, characterized in that, The liquid remaining quantity detection module and the anti-dry-burning switch are integrated onto the same chip; or... The liquid remaining quantity detection module is integrated on one chip, and the anti-dry burning switch is integrated on another chip.

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