Electronic atomization device and control method

Abstract

The invention provides an electronic atomization device and a control method. Wherein the electronic atomization device comprises: a heating element for heating an aerosol-forming substrate to generate an aerosol; the battery cell is used for supplying power to the heating element; and the PCM protection chip can be selectively configured between a protection mode and a non-protection mode, and when the working current of the battery core exceeds a first preset current value, the PCM protection chip is converted from the non-protection mode to the protection mode so as to prevent the battery core from outputting power. According to the electronic atomization device, over-current safety protection in the whole work of the battery cell is independently and accurately provided through the independent PCM protection chip, over-current protection of a certain independent loop is not limited, and operation and internal storage of the MCU controller are not occupied.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of electronic atomization technology, and in particular to an electronic atomization device and a control method. Background Art

[0002] Smoking articles (eg, cigarettes, cigars, etc.) burn tobacco during use to produce tobacco smoke. People have attempted to replace these tobacco-burning articles by creating products that release compounds without combustion.

[0003] An example of such a product is a heating device that releases a compound by heating rather than burning a material. For example, the material may be tobacco or other non-tobacco products that may or may not contain nicotine. As another example, there are aerosol providing products, such as so-called electronic atomization devices. These devices typically contain a liquid that is heated to vaporize it, thereby producing an inhalable aerosol. Known electronic atomization devices form a main heating circuit by connecting a rechargeable battery cell, a heating element and a standard sampling resistor; for example Figure 1 A schematic diagram of a main heating circuit in a common electronic atomization device is shown, in which the battery cell 1 provides power to the series-connected heating element 2 and the standard sampling resistor 3 through the switch tube Q; and the comparator U monitors the voltage across the standard sampling resistor 3 to determine the overcurrent condition of the main heating circuit. When the comparator U detects an overcurrent, the MCU controller 4 controls the switch tube Q to disconnect to prevent the battery cell 1 from continuing to work to implement overcurrent protection measures. Summary of the invention

[0004] An embodiment of the present application provides an electronic atomization device, comprising:

[0005] a heating element for heating the aerosol-forming substrate to generate an aerosol;

[0006] A battery cell, used to supply power to the heating element;

[0007] The PCM protection chip can be selectively configured between a protection mode and a non-protection mode, and when the working current of the battery cell exceeds a first preset current value, the PCM protection chip is switched from the non-protection mode to the protection mode to prevent the battery cell from outputting power.

[0008] In some embodiments, it also includes:

[0009] a first electrical connection point and a second electrical connection point;

[0010] One of the positive electrode or the negative electrode of the battery cell is connected to the first electrical connection point, and the other is connected to the second electrical connection point; the heating element can be connected between the first electrical connection point and the second electrical connection point to form a working circuit with the battery cell;

[0011] The PCM protection chip is connected between the battery cell and the second electrical connection point.

[0012] In some embodiments, it also includes:

[0013] The first switch tube is connected between the first electrical connection point and the second electrical connection point, and can drive the PCM protection chip to switch from the non-protection mode to the protection mode when turned on.

[0014] In some embodiments, it also includes:

[0015] The MCU controller is configured to obtain the operating current value of the battery cell and control the first switch tube to be turned on when the operating current value of the battery cell is less than the first preset current value and greater than the second preset current value.

[0016] Or in some embodiments, it also includes:

[0017] The MCU controller is configured to obtain the operating current value of the battery cell and control the first switch tube to turn on when the operating current value of the battery cell is less than the first preset current value and the change in the operating current value of the battery cell per unit time is greater than the second preset current value.

[0018] In some embodiments, it also includes:

[0019] The MCU controller is configured to obtain the voltage value of the battery cell and determine the duration of the puffing action according to the voltage change of the battery cell, and control the first switch tube to be turned on when the duration of the puffing action is greater than a preset time.

[0020] In some embodiments, it also includes:

[0021] The MCU controller is configured to control the first switch tube to be turned on according to the duration of the electronic atomization device being in static power consumption or when the static power consumption exceeds a predetermined threshold.

[0022] In some embodiments, it also includes:

[0023] A current-reducing resistor is connected between the first switch tube and the first electrical connection point, and is used to reduce the current flowing through the first switch tube when the first switch tube is turned on.

[0024] In some embodiments, it also includes:

[0025] A circuit board, wherein the PCM protection chip is arranged on the circuit board.

[0026] In some embodiments, the PCM protection chip is wrapped or packaged or integrated into the battery cell.

[0027] In some embodiments, the PCM protection chip includes:

[0028] A second switch tube is connected in series with the battery cell; the second switch tube is configured to configure the PCM protection chip to a non-protection mode when in an on state, and to configure the PCM protection chip to a protection mode when in an off state;

[0029] A current detection unit, used to detect the current flowing through the second switch tube and convert it into a voltage signal;

[0030] a comparator, which compares the voltage signal output by the current detection unit with a preset voltage value, and outputs a high level signal when the voltage signal exceeds the preset voltage value;

[0031] The logic controller determines that the operating current of the battery cell exceeds a first preset current value according to the high level output by the comparator, and switches the second switch tube from an on state to an off state.

[0032] Another embodiment of the present application further provides a control method for an electronic atomization device, the electronic atomization device comprising:

[0033] a heating element for heating the aerosol-forming substrate to generate an aerosol;

[0034] A battery cell, used to supply power to the heating element;

[0035] PCM protection chip, which can be selectively configured between protection mode and non-protection mode;

[0036] The method comprises:

[0037] When the working current of the battery cell exceeds a first preset current value, the PCM protection chip is controlled to switch from the non-protection mode to the protection mode to prevent the battery cell from outputting power.

[0038] The above electronic atomization device, through an independent PCM protection chip, accurately provides over-current safety protection for the entire operation of the battery cell, is not limited to the over-current protection of a certain independent circuit and does not occupy the calculation and memory of the MCU controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0040] Figure 1is a schematic diagram of overcurrent monitoring of a main heating circuit of a known electronic atomization device;

[0041] Figure 2 is a schematic diagram of an electronic atomization device provided by an embodiment;

[0042] Figure 3 yes Figure 2 A schematic diagram of an embodiment of an atomizer;

[0043] Figure 4 yes Figure 3 Schematic diagram of a mesoporous body from one perspective;

[0044] Figure 5 yes Figure 3 Schematic diagram of another perspective of the mesoporous body;

[0045] Figure 6 yes Figure 2 A schematic diagram of another embodiment of an atomizer;

[0046] Figure 7 is a schematic diagram of the structure of a circuit of an electronic atomization device according to an embodiment;

[0047] Figure 8 yes Figure 7 A schematic diagram of the structure of a specific embodiment of a PCM protection chip;

[0048] Fig. 9 is a curve showing the correlation between the voltage across the battery cell and the stored electric energy in one embodiment;

[0049] Fig.10 is a schematic diagram of the structure of a circuit of an electronic atomization device according to another embodiment;

[0050] Fig.11 is a schematic diagram of the structure of a circuit of an electronic atomization device according to another embodiment;

[0051] Fig.12 It is a schematic diagram of the structure of the circuit of the electronic atomization device of yet another embodiment. DETAILED DESCRIPTION

[0052] In order to facilitate the understanding of the present application, the present application is described in more detail below in conjunction with the accompanying drawings and specific implementation methods.

[0053] One embodiment of the present application provides an electronic atomization device for heating an aerosol-generating substrate to generate an aerosol.

[0054] In some embodiments, the electronic atomization device is arranged to be able to generate an aerosol by heating a solid aerosol-forming substrate. In some embodiments, the solid aerosol-forming substrate adopts a solid substrate, which may include one or more of powders, particles, fragments, strips, or flakes of one or more of vanilla leaves, tobacco leaves, homogenized tobacco, and expanded tobacco; or, the solid substrate may contain additional tobacco or non-tobacco volatile flavor compounds to be released when the substrate is heated. In addition, the applicant provides the construction and implementation details of the electronic atomization device for heating a solid aerosol-forming substrate to generate an aerosol in Chinese patent application CN114642278A, and the above document is incorporated herein by reference in its entirety.

[0055] In some further embodiments, the electronic atomization device is arranged to generate an aerosol from a liquid aerosol-forming substrate. In some embodiments, the liquid aerosol-forming substrate may include a liquid such as glycerol or propylene glycol; when heated, they vaporize to generate an inhalable aerosol.

[0056] Figure 2 A schematic diagram of an electronic atomization device for heating a liquid aerosol-forming substrate to generate an aerosol in a specific embodiment is shown; in this embodiment, the electronic atomization device includes an atomizer 100 that stores a liquid aerosol-forming substrate and atomizes it to generate an aerosol, and a power supply mechanism 200 that supplies power to the atomizer 100. Figure 2 In the illustrated embodiment, the atomizer 100 and the power supply mechanism 200 of the electronic atomization device can be separated or disassembled relative to each other; the electronic atomization device having such atomizer 100 and the power supply mechanism 200 can be separated or disassembled relative to each other, such as the so-called "replaceable cartridge" electronic atomization device. Or in some other variant embodiments, the atomizer 100 and the power supply mechanism 200 of the electronic atomization device are tightly wrapped and fixed by the shell component of the electronic atomization device, so that the atomizer 100 and the power supply mechanism 200 cannot be detachable relative to each other from the inside of the shell component; the electronic atomization device having such atomizer 100 and the power supply mechanism 200 cannot be detachable relative to each other, such as the so-called "integrated or disposable" electronic atomization device.

[0057] In an alternative embodiment, for example Figure 2 As shown, the power supply mechanism 200 includes a receiving cavity 270 arranged at one end along the length direction for receiving and accommodating at least a portion of the atomizer 100, and an electrical contact 230 at least partially exposed on the surface of the receiving cavity 270; the electrical contact 230 is used to form an electrical connection with the atomizer 100 when at least a portion of the atomizer 100 is received and accommodated in the receiving cavity 270, thereby supplying power to the atomizer 100.

[0058] according to Figure 2In the preferred embodiment shown, an electric contact 21 is provided on the end of the atomizer 100 opposite to the power supply mechanism 200 along the length direction, so that when at least a portion of the atomizer 100 is received in the receiving cavity 270, the electric contact 21 contacts and abuts against the electric contact 230 to form conductivity.

[0059] A sealing member 260 is disposed in the power supply mechanism 200, and the sealing member 260 separates at least a portion of the internal space of the power supply mechanism 200 to form the above receiving cavity 270. Figure 2 In the preferred embodiment shown, the seal 260 is constructed to be arranged perpendicular to the longitudinal direction of the power supply mechanism 200, and the seal 260 is flexible, for example, made of flexible silicone or TPE material, thereby preventing the liquid aerosol that infiltrates from the atomizer 100 to the receiving cavity 270 from flowing to the circuit board 220, the airflow sensor 250 and other components inside the power supply mechanism 200.

[0060] exist Figure 2 In the illustrated embodiment, the power supply mechanism 200 further includes a battery cell 210 that faces away from the receiving cavity 270 along the length direction, so as to supply power to the atomizer 100; and a circuit board 220 disposed between the battery cell 210 and the receiving cavity, such as a PCB board or an FPC board, etc., on which a circuit is integrated or arranged, and is further used to operably guide current between the battery cell 210 and the electrical contact 230.

[0061] The power supply mechanism 200 includes an airflow sensor 250, such as a microphone, an air pressure sensor, etc., which is used to sense the suction airflow generated when the user inhales the atomizer 100, and then the circuit board 220 controls the battery cell 210 to output power to the atomizer 100 according to the detection signal of the airflow sensor 250.

[0062] exist Figure 2 In the illustrated embodiment, the power supply mechanism 200 is provided with a charging interface 240 at the other end away from the receiving cavity 270 for charging the battery cell 210 .

[0063] Figure 3 Shows Figure 2 The atomizer 100 is a schematic structural diagram of an embodiment, which includes a main shell 10, a porous body 30 and a heating element 40.

[0064] according to Figure 3 As shown, the main housing 10 is generally in the shape of a flat cylinder, and of course its interior is hollow, and is used to store the atomized liquid aerosol-forming matrix and accommodate other necessary functional components; the upper end of the main housing 10 is provided with an air outlet 111 for inhaling the aerosol;

[0065] The main housing 10 is provided with a liquid storage chamber 12 for storing a liquid aerosol-forming matrix. In a specific embodiment, the main housing 10 is provided with an aerosol output tube 11 arranged along the axial direction, and the space between the outer wall of the aerosol output tube 11 and the inner wall of the main housing 10 forms the liquid storage chamber 12 for storing a liquid aerosol-forming matrix. The upper end of the aerosol output tube 11 relative to the proximal end 110 is connected to the gas outlet 111.

[0066] The porous body 30 is used to obtain the liquid aerosol-forming matrix in the liquid storage chamber 12 through the liquid channel 13, and the liquid aerosol-forming matrix is ​​transmitted as follows: Figure 2 As shown by the middle arrow R1, the porous body 30 has a flat atomizing surface 310, on which a heating element 40 is formed for heating at least part of the liquid aerosol-forming substrate absorbed by the porous body 30 to generate an aerosol.

[0067] See Figure 4 and Figure 5 As shown, the side of the porous body 30 facing away from the atomizing surface 310 is in fluid communication with the liquid channel 13 so as to absorb the liquid aerosol-forming substrate, and then transfer the liquid aerosol-forming substrate to the atomizing surface 310 for heating and atomization.

[0068] After assembly, both ends of the heating element 40 are in contact with the electrical contacts 21 to conduct electricity. The heating element 40 heats at least part of the liquid aerosol-forming matrix in the porous body 30 to generate aerosol during power-on. In an optional embodiment, the porous body 30 includes flexible fibers, such as cotton fibers, non-woven fabrics, glass fiber ropes, etc., or includes porous ceramics with a microporous structure, such as Figure 4 and Figure 5 A porous ceramic body of the shape shown.

[0069] The heating element 40 may be combined on the atomizing surface 310 of the porous body 30 by printing, deposition, sintering or physical assembly. In some other variations, the porous body 30 may have a plane or a curved surface for supporting the heating element 40, and the heating element 40 is formed on the plane or the curved surface of the porous body 30 by mounting, printing, deposition or the like.

[0070] The material of the heating element 40 can be a metal material, metal alloy, graphite, carbon, conductive ceramic or other ceramic material and metal material composite material with appropriate impedance. Suitable metal or alloy materials include at least one of nickel, cobalt, zirconium, titanium, nickel alloy, cobalt alloy, zirconium alloy, titanium alloy, nickel-chromium alloy, nickel-iron alloy, iron-chromium alloy, iron-chromium-aluminum alloy, iron-manganese-aluminum-based alloy or stainless steel. The resistance material of the heating element 40 can be selected from a metal or alloy material with a suitable resistance temperature coefficient, such as a positive temperature coefficient or a negative temperature coefficient, so that the heating circuit can be used for both heating and as a sensor for sensing the real-time temperature of the atomizing component.

[0071] Figure 6 A schematic diagram of the structure of an atomizer 100a of another embodiment is shown; the porous body 30a is configured in a hollow columnar shape extending in the longitudinal direction of the atomizer 100a, and the heating element 40a is formed in the columnar hollow of the porous body 30a. In use, as shown by arrow R1, the liquid aerosol-forming matrix of the liquid storage chamber 20a is absorbed along the outer surface of the radial direction of the porous body 30a, and then transferred to the heating element 40a on the inner surface for heating and vaporization to generate aerosol; the generated aerosol is output from the columnar hollow of the porous body 30a in the longitudinal direction of the atomizer 100a. And in some common embodiments, the heating element 40 / 40a can have an initial resistance value of about 0.3 to 1.5Ω.

[0072] Figure 7 A schematic diagram of the structure of a circuit of an electronic atomization device in one embodiment is shown. In this embodiment, the circuit includes:

[0073] MCU controller 221;

[0074] A first electrical connection point 211, electrically connected to the positive electrode of the battery cell 210;

[0075] The second electrical connection point 212 is electrically connected to the negative electrode of the battery cell 210 .

[0076] Furthermore, during use, the electronic atomization device is connected to the battery cell 210 via the first electrical connection point 211 and the second electrical connection point 212 to form a working circuit.

[0077] In some specific embodiments, the working circuit of the battery cell 210 includes a discharge circuit, for example, the electronic devices such as the heating element 40, the airflow sensor 250 and the MCU controller 221 are electrically connected to the first electrical connection point 211 by connecting the power input end of these electronic devices to the second electrical connection point 212, so that the battery cell 210 supplies power to the above electronic devices such as the heating element 40, the airflow sensor 250 and the MCU controller 221. In some specific embodiments, a heating circuit is formed by connecting the two ends of the heating element 40 to the first electrical connection point 211 and the second electrical connection point 212, so that the heating element 40 is heated; and in some embodiments, the MCU controller 221 controls the battery cell 210 to provide power to the heating element 40 in a constant power mode in the heating circuit; for example, the applicant provides a constant power supply mode and content details about liquid matrix heating atomization in Chinese patent application CN115067564A, and the above document is fully incorporated herein by reference.

[0078] In some other embodiments, the working circuit of the battery cell 210 may also include a charging circuit, for example, the positive and negative ends of a charging connector such as a USB charging connector are respectively connected to the first electrical connection point 211 and the second electrical connection point 212 to form a charging circuit for the battery cell 210.

[0079] exist Figure 7 In the specific embodiment shown, the second electrical connection point 212 is grounded (GND); thus, the power supply output terminal and the negative charging terminal of the electronic device can both be electrically connected to the second electrical connection point 212 by grounding.

[0080] Based on the circuit operation, the battery cell 210 in the electronic atomization device has a rated operating current during charging or discharging, and is required not to exceed the rated current to avoid excessive current from burning out the battery cell 210 and / or electronic devices, etc. Figure 6 In the embodiment of the present invention, the circuit further comprises:

[0081] The PCM protection chip 222 (Protection Circuit Module, PCM for short) is used to monitor and protect the safe operation of the circuit. Specifically, the PCM protection chip 222 is used to monitor the operating current of the battery cell 210, and when the operating current of the battery cell 210 exceeds a first preset current value, the PCM protection chip 222 can be triggered to switch from a non-protection mode to a protection mode, thereby disconnecting the circuit to prevent the battery cell 210 from continuing to work.

[0082] exist Figure 7In the embodiment shown, the PCM protection chip 222 is electrically connected between the second electrical connection point 212 and the negative electrode of the battery cell 210, so as to monitor the working current of the battery cell 210 and provide overcurrent protection. Through the above PCM protection chip 222, overcurrent safety protection in the entire operation of the battery cell 210 is more accurately performed independently of the MCU controller 221, and is not limited to overcurrent protection of a certain independent circuit; and does not occupy the storage space and memory of the MCU controller 221.

[0083] Figure 8 A schematic diagram of the structure of a PCM protection chip 222 of a typical embodiment is shown; the PCM protection chip 222 includes:

[0084] The switch tube Q2 is connected between the second electrical connection point 212 and the negative electrode of the battery cell 210;

[0085] A current detection unit, used to sense or detect the current flowing through the switch tube Q2 and convert it into a voltage signal;

[0086] One or more comparators, used to compare the voltage signal output by the current detection unit with a preset voltage value, and if the voltage signal exceeds the preset voltage value, the comparator will output a high level signal;

[0087] The logic controller determines that the operating current of the battery cell 210 exceeds the first preset current value according to the high level signal output by one or more comparators, and controls the switch tube Q2 to be turned off, thereby disconnecting the loop to prevent the battery cell 210 from continuing to work.

[0088] according to Figure 8 In the structure of the PCM protection chip 222 shown, in the non-protection mode, the logic controller controls the switch tube Q2 to be turned on; and when the PCM protection chip 222 is switched to the protection mode, the switch tube Q2 is controlled to be turned off.

[0089] In some embodiments, the PCM protection chip 222 having the above structure or function is, for example, a PCM chip of model IP3254 (total core), a PCM chip of Inchip TSSOP16, etc.

[0090] according to Figure 8 In the embodiment shown, the PCM protection chip 222 is configured with a plurality of different comparators based on different working states of charging and discharging to respectively monitor the overcurrent of the battery cell 210 in different working states. Figure 7 The comparator includes one or more of a comparator for monitoring an overcharge current of the battery cell 210 , a comparator for monitoring a short circuit of the battery cell 210 , and a comparator for monitoring an overdischarge current of the battery cell 210 .

[0091] according to Figure 8As shown, the integrated PCM protection chip 222 mainly has the functions of over-current monitoring and switching, and when the working current of the battery cell 210 exceeds the first preset current value, the control loop is disconnected to prevent the battery cell 210 from continuing to work.

[0092] according to Figure 8 As shown, the PCM protection chip 222 is connected in series with the battery cell 210 in the working loop including the battery cell 210 .

[0093] or in Figure 8 In the illustrated embodiment, the PCM protection chip 222 also has a comparator for monitoring the over-discharge voltage of the battery cell 210 and a comparator for monitoring the over-charge voltage of the battery cell 210, and can thereby determine whether the voltage of the battery cell 210 during discharge operation or charging operation exceeds a first preset current value by sampling or detecting the voltage across the switch tube Q2; and when the first preset current value is exceeded, the switch tube Q2 is controlled to be disconnected to prevent the battery cell 210 from continuing to operate.

[0094] according to Figure 8 As shown, a switch tube Q2 is integrated or built-in in the PCM protection chip 222 itself, and the switch tube Q2 is connected in series with the battery cell 210 when connected to the circuit.

[0095] Alternatively, in some variable embodiments, the PCM protection chip 222 may only have overcurrent monitoring and switch control functions, that is, the switch tube Q2 is not integrated inside the PCM protection chip 222; then, in use, the switch tube Q2 connected in series with the battery cell 210 may be added or arranged separately in the working circuit of the battery cell 210, and the PCM protection chip 222 samples and monitors the current flowing through the switch tube Q2 and controls the conduction and disconnection of the switch tube Q2 to achieve overcurrent control of the battery cell 210.

[0096] according to Figure 7 As shown, the circuit arranged on the circuit board 220 also includes:

[0097] The switch tube Q1 is connected between the first electrical connection point 211 and the second electrical connection point 212. Figure 7 In the embodiment shown in which the switch tube Q1 is added, in some or certain scenarios, when the working current of the battery cell 210 cannot trigger the PCM protection chip 222 to start the protection mode, but it is actually necessary to prevent the battery cell 210 from continuing to work, the MCU controller 221 can actively intervene to turn on the switch tube Q1, so as to directly connect the positive and negative electrodes of the battery cell 210 to the two ends of the PCM protection chip 222 to form a short circuit to trigger the PCM protection chip 222 to start and enter the protection mode. And in some embodiments, the switch tube Q1 can be a transistor switch that can handle large current, such as an NMOS tube, a PMOS tube, a thyristor, an IGBT or a thyristor.

[0098] For example, in some specific embodiments, during the operation or use of the electronic atomization device, occasionally a small device in the entire load is damaged or intermittently disconnected or short-circuited or has an abnormality of unknown cause, which causes the working current of the battery cell 210 to jump or fluctuate instantly, such as causing the rate of change or amount of change of the working current of the battery cell 210 in a unit time to exceed a certain range, such as exceeding the second preset current value, and the degree of the jump or fluctuation is not enough to reach the first preset current value that triggers the PCM protection chip 222 to start the protection mode, but at this time the entire load and / or the battery cell 210 is actually in a very dangerous state. Accordingly, the MCU controller 221 is configured to monitor the rate of change or amount of change of the working current of the battery cell 210 in a unit time exceeding the second preset current value, so as to determine that the working current of the battery cell 210 has an abnormality of instantaneous jump or fluctuation, and then control the switch tube Q1 to turn on. When the switch tube Q1 is turned on, the battery cell 210 directly forms a loop with the PCM protection chip 222. At this time, the current flowing through the PCM protection chip 222 can trigger the PCM protection chip 222 to start the protection mode, so that the PCM protection chip 222 disconnects the switch tube Q2 to prevent the battery cell 210 from continuing to work. In addition, the second preset current value used to determine when the working current of the battery cell 210 is in abnormal fluctuation is less than the first preset current value used to trigger the PCM protection chip 222 to start protection.

[0099] In some specific embodiments, the MCU controller 221 can determine the heating time of the heating element 40, that is, the user's puffing time, based on real-time monitoring of the voltage of the battery cell 210. Fig. 9 FIG. 2 shows the correlation curve between the voltage of the battery cell 210 and the stored electric energy. Usually, they are monotonically related. For example, when the battery cell 210 is fully charged, the voltage reaches the maximum value V 充满(usually 4.2V), at this time, the electric energy stored in the battery cell 210 reaches the maximum Emax; when the voltage of the battery cell 210 drops to the minimum Vmin (usually 3.7V) as the battery cell 210 discharges, the electric energy stored in the battery cell 210 reaches the minimum Emin. When the MCU controller 221 controls the heating in the constant power heating mode of liquid matrix heating and atomization, the MCU controller 221 can determine the duration of the puffing action by real-time detection of the change in the voltage of the battery cell 210 in each puffing action; for example, in a specific embodiment, the battery cell 210 supplies power to the heating element 40 for heating in the constant power mode for about 3s per puffing action, and the voltage of the battery cell 210 drops by more than 0.2V. Of course, if the puffing action lasts longer, such as 4s / 5s or more, the voltage of the battery cell 210 will drop more accordingly. When the MCU controller 221 detects that the duration of the puffing action is greater than the preset time, the switch tube Q1 is controlled to be turned on to trigger the PCM protection chip 222 to turn off the switch tube Q2 to prevent the battery 210 from continuing to work, thereby preventing the user from inhaling excessively or forming an over-inhalation protection. In this embodiment, the MCU controller 221 can determine the duration of the puffing action by the change in the voltage of the battery cell 210, without having to determine the duration of the puffing action by the trigger time of the conventional airflow sensor 250.

[0100] In some other specific embodiments, when the electronic atomization device is in static power consumption, the MCU controller 221 can monitor the voltage of the battery cell 210 in real time to determine the duration of the electronic atomization device in the static power consumption state or whether the static power consumption exceeds a predetermined threshold; when the duration of the electronic atomization device in the static power consumption state or the static power consumption exceeds the predetermined threshold, the switch tube Q1 is controlled to turn on to trigger the PCM protection chip 222 to turn off the switch tube Q2 to cut off the continued discharge of the battery cell 210, thereby increasing the standby time of the electronic atomization device or saving the power of the battery cell 210. This setting is particularly effective and important for improving power saving or reducing consumption of the electronic atomization device during long-term storage and transportation.

[0101] The "static power consumption" described above is a common term in the field of electronic equipment, specifically referring to the state in which an electronic device, such as an electronic atomization device, still consumes a certain amount of electrical energy when not performing any operation. The reason is that many components in electronic devices, such as capacitors, resistors, and transistors, will still store charges or maintain a certain current after power failure, and these charges and currents will cause the device to consume static power. Static power consumption is usually low, much less than the power consumption of electronic equipment when it is working at rated power.

[0102] exist Figure 7 In the illustrated embodiment, the PCM protection chip 222 is disposed on the circuit board 220 .

[0103] or Fig.10 FIG. 2 shows a schematic diagram of the structure of a circuit of another embodiment; in this embodiment, the PCM protection chip 222a is integrated or installed with the battery cell 210a to form a module or a whole 300a. Specifically, in the preparation, the negative terminal of the PCM protection chip 222a is welded to the negative electrode of the battery cell 210a, and the PCM protection chip 222a and the battery cell 210a are integrally wrapped or packaged or integrated in the battery cell 210 to form a power supply module 300a, and then welded to the circuit board 220a to form an electrical connection. Fig.10 In the illustrated embodiment, the PCM protection chip 222a and the battery cell 210a are integrally wrapped or packaged into a power supply module 300a, so that the PCM protection chip 222a can always provide monitoring protection during the operation of the battery cell 210a.

[0104] or Fig.11 A schematic diagram of the structure of a circuit of another embodiment is shown; in this embodiment, the circuit includes:

[0105] MCU controller 221b;

[0106] The first electrical connection point 211b is electrically connected to the positive electrode of the battery cell 210b;

[0107] The second electrical connection point 212b is electrically connected to the negative electrode of the battery cell 210b via the PCM protection chip 222b;

[0108] The series-connected current-reducing resistor R1 and the switch tube Q1 are connected between the first electrical connection point 211b and the second electrical connection point 212b.

[0109] In this Fig.11 In the embodiment, the existence of the current reducing resistor R1 reduces the current flowing through the switch tube Q1 when the MCU controller 221b controls the switch tube Q1 to be turned on, thereby preventing the switch tube Q1 from being burned by the large current. The resistance value of the current reducing resistor R1 can be 0Ω to 1Ω, and most of them are about 0.5Ω. The current reducing resistor R1 can be a PTC resistor or the like.

[0110] or Fig.12 A schematic diagram of the structure of a circuit of another embodiment is shown; in this embodiment, the PCM protection chip 222c and the battery cell 210c are integrally wrapped or packaged into a power supply module 300c, and the PCM protection chip 222c can always provide monitoring protection during the operation of the battery cell 210c.

[0111] It should be noted that the preferred embodiments of the present application are given in the specification and drawings of the present application, but are not limited to the embodiments described in the specification. Furthermore, it is possible for a person of ordinary skill in the art to make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to the present application.

Claims

1. An electronic atomization device, characterized in that: include: a heating element for heating the aerosol-forming substrate to generate an aerosol; A battery cell, used to supply power to the heating element; The PCM protection chip can be selectively configured between a protection mode and a non-protection mode, and when the working current of the battery cell exceeds a first preset current value, the PCM protection chip is switched from the non-protection mode to the protection mode to prevent the battery cell from outputting power.

2. The electronic atomization device according to claim 1, characterized in that: Also includes: a first electrical connection point and a second electrical connection point; One of the positive electrode or the negative electrode of the battery cell is connected to the first electrical connection point, and the other is connected to the second electrical connection point; the heating element can be connected between the first electrical connection point and the second electrical connection point to form a working circuit with the battery cell; The PCM protection chip is connected between the battery cell and the second electrical connection point.

3. The electronic atomization device according to claim 1 or 2, characterized in that: Also includes: The first switch tube is connected between the first electrical connection point and the second electrical connection point, and can drive the PCM protection chip to switch from the non-protection mode to the protection mode when turned on.

4. The electronic atomization device according to claim 3, characterized in that: Also includes: The MCU controller is configured to obtain the operating current value of the battery cell and control the first switch tube to be turned on when the operating current value of the battery cell is less than the first preset current value and greater than the second preset current value.

5. The electronic atomization device according to claim 3, characterized in that: Also includes: The MCU controller is configured to obtain the voltage value of the battery cell and determine the duration of the puffing action according to the voltage change of the battery cell, and control the first switch tube to be turned on when the duration of the puffing action is greater than a preset time.

6. The electronic atomization device according to claim 3, characterized in that: Also includes: The MCU controller is configured to control the first switch tube to be turned on according to the duration of the electronic atomization device being in static power consumption or when the static power consumption exceeds a predetermined threshold.

7. The electronic atomization device according to claim 3, characterized in that: Also includes: A current-reducing resistor is connected between the first switch tube and the first electrical connection point, and is used to reduce the current flowing through the first switch tube when the first switch tube is turned on.

8. The electronic atomization device according to claim 1 or 2, characterized in that: Also includes: A circuit board, wherein the PCM protection chip is arranged on the circuit board.

9. The electronic atomization device according to claim 1 or 2, characterized in that: The PCM protection chip is wrapped, packaged or integrated in the battery core.

10. The electronic atomization device according to claim 1 or 2, characterized in that: The PCM protection chip includes: A second switch tube is connected in series with the battery cell; the second switch tube is configured to configure the PCM protection chip to a non-protection mode when in an on state, and to configure the PCM protection chip to a protection mode when in an off state; A current detection unit, used to detect the current flowing through the second switch tube and convert it into a voltage signal; a comparator, which compares the voltage signal output by the current detection unit with a preset voltage value, and outputs a high level signal when the voltage signal exceeds the preset voltage value; The logic controller determines that the operating current of the battery cell exceeds a first preset current value according to the high level output by the comparator, and switches the second switch tube from an on state to an off state.

11. A control method for an electronic atomization device, the electronic atomization device comprising: a heating element for heating the aerosol-forming substrate to generate an aerosol; A battery cell, used to supply power to the heating element; PCM protection chip, which can be selectively configured between protection mode and non-protection mode; Characterized in that the method comprises: When the working current of the battery cell exceeds a first preset current value, the PCM protection chip is controlled to switch from the non-protection mode to the protection mode to prevent the battery cell from outputting power.

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