Patent Publication Number: US-11051364-B2

Title: Control method of electronic cigarette and electronic cigarette thereof

Description:
FIELD 
     The present disclosure relates to the technical field of electronic cigarette, in particular to a control method of an electronic cigarette and an electronic cigarette thereof. 
     BACKGROUND 
     At present, e-cigarettes have become a relatively mature alternative to smoking on the market. The battery supplies power to the heating assembly of the atomizing device of the e-cigarette, so that the heating assembly heats the cigarette liquid under electric driving to generate smoke for the user to smoke. When the heating assembly cannot atomize the cigarette liquid supplied by the liquid storage device in time, the excess cigarette liquid in the atomizing device may leak, affecting the user&#39;s use, and also causing waste of the cigarette liquid. 
     SUMMARY 
     The present disclosure provides a control method of an electronic cigarette to reduce the risk of liquid leakage, and an electronic cigarette using the method. 
     A control method of an electronic cigarette, the atomizing assembly includes a first detecting device, a heating member, a liquid absorbing member, a controller, and a pump body, the pump body is configured to supplying the cigarette liquid to the heating member, the heating member is for heating the cigarette liquid, the liquid absorbing member is for adsorbing excess cigarette liquid, the control method includes: the first detecting device detects the degree of saturation of the liquid absorbing member, and feedback to the controller; the controller compares the degree of saturation of the liquid absorbing member with the first threshold value; and when the degree of saturation is greater than or equal to the first threshold, the controller controls the liquid absorbing member to maintain the current degree of saturation or to control the degree of saturation of the liquid absorbing member to be reduced. 
     In one embodiment, the control method further includes the following step after comparing the degree of saturation of the liquid absorbing member with the first threshold value: when the degree of saturation is less than the first threshold value, returning to the step of detecting the degree of saturation of the liquid absorbing member by the first detecting device and feeding back to the controller. 
     In one embodiment, the electronic cigarette further includes an alarm device, the method for controlling the electronic cigarette further includes: when the degree of saturation is greater or less than the first threshold value, the controller instructs the alarm device to transmit an alarm signal. 
     In one embodiment, the step of controlling the liquid absorbing member to maintain the current degree of saturation or to control the decrease in the degree of saturation of the liquid absorbing member includes the following step, the controller controls circuit between the pump body and the power source to be opened, and/or controls circuit between the heating element and the power source to be turned on, to make the heating element operates for a certain period of time. 
     In one embodiment, the control method further includes following steps after controlling circuit between the pump body and the power source to be opened, and/or controls circuit between the heating element and the power source to be turned on, to make the heating element operates for a certain period of time: the first detecting device detects the degree of saturation of the liquid absorbing member and feeds back to the controller; the controller compares the degree of saturation of the liquid absorbing member with a second threshold value stored in advance; when the degree of saturation is greater than the second threshold value, the controller controls the circuit between the pump body and the power source to be opened, and controls the circuit between the heating member and the power source to be turned on, so that the heating member operates for a certain period of time; the second threshold value is less than the first threshold value. 
     In one embodiment, the control method further includes the following step after comparing the degree of saturation of the liquid absorbing member with a second threshold value stored in advance: when the degree of saturation is less than or equal to the second threshold value, the controller controls the circuit between the pump body and the power source to be turn on and the circuit between the heating element and the power source to be turn on, so that the pump body and the heating element work for a certain period of time. 
     In one embodiment, the control method further includes the steps of: when the degree of saturation is less than or equal to the second threshold value, the controller receives the shutdown signal of the pump body and the shutdown signal of the heating element; the controller controls circuit between the pump body and the power source to be opened and controls circuit between the heating element and the power source to be opened. 
     In one embodiment, control method further includes: the controller receives a shutdown signal of the pump body and a shutdown signal of the heating element; the controller controls a circuit between the pump body and the power source to be opened; the first detecting device detects the degree of saturation of the liquid absorbing member and feeds back to the controller; the controller compares the degree of saturation of the liquid absorbing member with a third threshold value stored in advance; when the degree of saturation is less than or equal to the third threshold value, the controller controls the circuit between the heating element and the power source to be opened, the third threshold value is less than the first threshold value. 
     In one embodiment, the control method further includes following steps after comparing the degree of saturation of the liquid absorbing member with a third threshold value stored in advance: when the degree of saturation is greater than the third threshold value, the controller controls the circuit between the heating element and the power source to keep connecting, so that the heating element continues to operate for a certain period of time, and then the first detecting device detects the degree of saturation of the liquid absorbing member, and feedback to the controller. 
     An electronic cigarette for performing any one of the above methods. 
     An electronic cigarette includes a first detecting device, a pump body, a heating member, a liquid absorbing member, a power source, and a controller, the liquid absorbing member configured for absorbing excess cigarette liquid, the pump body is configured to supply the liquid to the heating member, the heating member is configured to heat the cigarette liquid supplied by the pump body; the first detecting device is configured to detect the degree of saturation of the liquid absorbing member and feedback to the controller, the controller is configured to compare the degree of saturation of the liquid absorbing member with a first threshold value stored in advance; when the degree of saturation is greater than or equal to the first threshold value, the controller is configured to control the circuit between the pump body and the power sources to be opened, and/or control the circuit between the heating element and the power source to be connected to make the heating element operates for a certain period of time. 
     In one embodiment, the electronic cigarette further includes an alarm device, when the degree of saturation is greater than or equal to the first threshold value, the controller is further configured to instruct the alarm device to transmit an alarm signal. 
     In one embodiment, the controller is further configured to compare the degree of saturation of the liquid absorbing member with a second threshold value stored in advance; when the degree of saturation is less than or equal to the second threshold value, the controller controls the pump body and the power source are electrically continuous therewith, and also controls the heating element and the power source are electrically continuous therewith, so that the pump body and the heating element working for a certain period of time, the second threshold value is less than the first threshold value. 
     In one embodiment, the controller is further configured to compare the degree of saturation of the liquid absorbing member and a second threshold value stored in advance; when the degree of saturation is less than or equal to the second threshold value, the controller is configured to receive a shutdown signal of the pump body and a shutdown signal of the heating element; when the controller receives the shutdown signal of the pump body and the heating element the controller controls a circuit between the pump body and the power source to be opened and controls circuit between the heating element and the power source to be opened; the second threshold value is less than the first threshold value. 
     In one embodiment, the controller is further configured to receive a shutdown signal of the pump body and a shutdown signal of the heating member, and when the controller receives the shutdown signal of the pump body and the shutdown signal of the heating element, the controller is configured to control the circuit between the pump body and the power source to be opened; the controller is configured to compare the degree of saturation of the liquid absorbing member with a third threshold value stored in advance; when the degree of saturation is less than or equal to the third threshold value, the controller is configured to control a circuit between the heating element and the power source to be opened; the third threshold value is greater than the first threshold value. 
     In one embodiment, the liquid absorbing member is made of porous ceramic, the liquid absorbing member is disposed in attached to the heating member. 
     In one embodiment, the electronic cigarette further includes a liquid passage, a liquid intake hole, a liquid outlet, and a liquid storage assembly for storing the cigarette liquid; the liquid outlets are respectively in communication with the smoke liquid passage and the heating member; the liquid intake hole is respectively in communication with the smoke liquid passage and the pump body, the pump body cooperates with the liquid storage assembly, the pump body supplies the liquid smoke in the liquid storage assembly to the heating member through the liquid intake hole, the liquid passage, and the liquid outlet. 
     In one embodiment, the liquid intake hole is disposed above the heating member, or the electronic cigarette further includes a spraying member, one end of the spraying member is in communication with the liquid outlet, the opposite end of the spray member is provided with a spray head located between the heating member and the liquid absorbing member, the spray head faces the lower surface of the heating member. 
     In one embodiment, the electronic cigarette further includes a base, the base includes an inner housing and an outer housing, the outer housing is sleeved outside the inner housing, a gap between the outer housing and the inner housing constitutes the liquid passage, the liquid outlet is defined at the inner housing, the liquid inlet is defined at the outer housing, the heating element and the liquid absorbing members are received in the inner cavity of the inner housing. 
     In one embodiment, the electronic cigarette further includes a second detecting device disposed at the liquid intake hole; when the controller receives the shutdown signal of the pump body and the shutdown signal of the heating member, the controller controls the circuit between the heating member and the power source to be opened, and controls the pump body pump the cigarette liquid in the liquid passage into the liquid storage assembly; when the second detecting device detects that no cigarette liquid passes through the liquid intake hole, the controller controls the pump body and the circuit between the power supplies to be opened. 
     In one embodiment, the electronic cigarette further includes a third detecting device disposed at the liquid outlet, the third detecting device is configured to generate a trigger signal when the smoke liquid flows through the liquid outlet. 
     In the electronic cigarette of the present disclosure, the liquid absorbing member is configured to adsorb excess smoke liquid, according to the degree of saturation of the liquid absorbing member detected by the first detecting device, the controller disconnects the circuit between the pump body and the power source, and/or controls the circuit connection between the heating member and the power source, so that the heating member works for a certain period of time. Thereby, the liquid absorbing member is controlled to maintain the current degree of saturation or to control the degree of saturation of the liquid absorbing member to be reduced. In this way, to prevent the liquid absorbing member from being used in a state that has reached or is close to the adsorption saturation, thereby reducing the risk of leakage. 
     The disclosure also provides an atomizing assembly having a liquid leakage prevention function, an atomizer using the atomizing assembly and an electronic cigarette using the same. 
     In one embodiment, the atomizing assembly includes a heating member, a liquid passage, a liquid intake hole, a liquid outlet, and a collecting device, the liquid intake hole is in communication with the liquid passage, the liquid outlet is in communication with the liquid passage and the heating member, the collecting device is disposed below the heating member for collecting excess cigarette liquid. 
     In one embodiment, the collecting device is a liquid absorbing member, the collecting device is a unidirectional collection chamber, the collecting device includes a collection chamber and a unidirectional membrane, the collection chamber is provided with at least one opening, each opening being sealed by a unidirectional membrane. 
     In one embodiment, the atomizing assembly further includes a first detecting device, the first detecting device is disposed on the liquid absorbing member, the first detecting device is configured to detect the degree of saturation of the liquid absorbing member. 
     In one embodiment, the liquid absorbing member is made of porous ceramic, the liquid absorbing member is attached to the heating member. 
     In one embodiment, the liquid outlet is disposed above the heating member, or the atomizing assembly further includes a spraying member, one end of the spraying member is in communication with the liquid outlet, the opposite end of the spraying member is provided with a spray head between the heating member and the collecting device, the spray head faces the lower surface of the heating member. 
     In one embodiment, the atomizing assembly further includes a base, the base includes an inner housing and an outer housing, the outer housing is sleeved outside the inner housing, a gap between the outer housing and the inner housing constitutes the liquid passage, the liquid outlet is defined at the inner housing, the liquid inlet is defined at the outer housing, the heating element and the liquid absorbing members are received in the inner cavity of the inner housing. 
     In one embodiment, the atomizing assembly further includes a third detecting device disposed at the liquid outlet, the third detecting device is configured to generate a trigger signal when the smoke liquid flows through the liquid outlet. 
     An atomizer including a liquid storage assembly and any one of the above atomizing assemblies, the liquid intake hole is in communication with the liquid storage assembly. 
     In one embodiment, the atomizer further includes an outer casing, and the atomizing structure is received in the outer casing, the outer casing is provided with a partially transparent area, the transparent area of the outer casing is corresponding to the position of the liquid outlet. 
     An electronic cigarette includes any of the above of the atomizers. 
     The beneficial effects of the device are: 
     The collecting device is located below the heating member, the collecting device can collect excess cigarette liquid, thereby preventing the electronic cigarette from leaking. The first detecting device is provided on the liquid absorbing member, the first detecting device detects the degree of saturation of the liquid absorbing member. When the degree of saturation of the liquid absorbing member is greater than or equal to the first threshold value, hereby, the liquid absorbing member is controlled to maintain the current degree of saturation or to control the degree of saturation of the liquid absorbing member to be reduced. Thereby, preventing the liquid absorbing member from being used in a state that has reached or is close to the adsorption saturation, thereby reducing the risk of leakage. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a schematic view of an atomizer of an electronic cigarette according to the present disclosure; 
         FIG. 2  is a schematic view showing the position of the spray member and the heating member of the electronic cigarette of the present disclosure; 
         FIG. 3  is a block diagram of the electric circuit of the electronic cigarette of the present disclosure; 
         FIG. 4  is a first working flowchart of the electronic cigarette of the present disclosure; 
         FIG. 5  is a second working flowchart of the electronic cigarette of the present disclosure; 
         FIG. 6  is a third working flowchart of the electronic cigarette of the present disclosure. 
     
    
    
     The following table list various components and reference numerals thereof. 
     
       
         
           
               
               
               
             
               
                   
                   
               
             
            
               
                   
                 Atomizer 100 
                 Atomizing assembly 10 
               
               
                   
                 Heating member 102 
                 Liquid absorbing member 103 
               
               
                   
                 Inner housing 1011 
                 Outer housing 1012 
               
               
                   
                 Liquid passage 1015 
                 Liquid outlet 1016 
               
               
                   
                 Pump body 202 
                 Controller 31 
               
               
                   
                 Liquid storage assembly 20 
                 Base 101 
               
               
                   
                 First detecting device 104 
                 Spraying member 105 
               
               
                   
                 Liquid storage cartridge 2011 
                 Piston 2012 
               
               
                   
                 liquid intake hole 1017 
                 Liquid storage assembly 201 
               
               
                   
                 Power source 32 
                 Alarm device 40 
               
               
                   
                   
               
            
           
         
       
     
     DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS 
     It will be appreciated that for simplicity and clarity of illustration, where appropriate, reference numerals have been repeated among the different figures to indicate corresponding or analogous elements. In addition, numerous specific details are set forth in order to provide a thorough understanding of the embodiments described herein. However, it will be understood by those of ordinary skill in the art that the embodiments described herein can be practiced without these specific details. In other instances, methods, procedures and components have not been described in detail so as not to obscure the related relevant feature being described. Also, the description is not to be considered as limiting the scope of the embodiments described herein. The drawings are not necessarily to scale and the proportions of certain parts may be exaggerated to better illustrate details and features of the present disclosure. 
     Several definitions that apply throughout this disclosure will now be presented. 
     The term “coupled” is defined as connected, whether directly or indirectly through intervening components, and is not necessarily limited to physical connections. The connection can be such that the objects are permanently connected or releasably connected. The term “comprising,” when utilized, means “including, but not necessarily limited to”; it specifically indicates open-ended inclusion or membership in the so-described combination, group, series and the like. 
     When a feature or element is herein referred to as being “on” another feature or element, it can be directly on the other feature or element or intervening features and/or elements may also be present. 
     Terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items and may be abbreviated as “/”. 
     Referring to  FIG. 1 , the present disclosure provides an electronic cigarette including an atomizer  100 , a mouthpiece (not shown), and a battery assembly (not shown). The atomizer  100  is electrically connected to the battery assembly, the mouthpiece is in communication with the atomizer  100 . The atomizer  100  heats the cigarette liquid under the electric drive of the battery assembly, so that the cigarette liquid is atomized into smoke, the user inhales the smoke through the mouthpiece to obtain a smoking experience. 
     The atomizer  100  includes an outer casing (not shown), an atomizing assembly  10  and a liquid storage assembly  20 . The atomizing assembly  10  and the liquid storage assembly  20  are received in the outer casing. The atomizing assembly  10  is in communication with the liquid storage assembly  20 . The liquid storage assembly  20  is configured to store cigarette liquid and supply the cigarette liquid to the atomizing assembly  10 . The atomizing assembly  10  heats the cigarette liquid under the electrical drive of the battery assembly. 
     The atomizing assembly  10  includes a heating member  102 , a liquid passage  1015 , a liquid intake hole  1017 , a liquid outlet  1016 , and a collecting device. The liquid intake hole  1017  is in communication with the liquid passage  1015  and the liquid storage assembly  20 . The liquid outlet  1016  is in communication with the liquid passage  1015  and the heating member  102 . The cigarette liquid in the liquid storage assembly  20  enters the liquid through the liquid intake hole  1017 , and then flows from the liquid outlet  1016  to the heating member  102 . The collecting device is disposed below the heating member  102  for collecting excess cigarette liquid to prevent leakage. The excess cigarette liquid refers to the cigarette liquid that cannot flow out of the mouthpiece in the form of smoke after flowing out from the liquid outlet  1016 . The excess cigarette liquid includes the cigarette liquid that has not been atomized by the heating member  102  and dripped from the heating member  102 , the condensate of the cigarette liquid remaining in the electronic cigarette, and the like. It can be understood that, in other embodiments, a liquid storage member is disposed above the heating member  102 . The liquid storage member is made of a porous material. The cigarette liquid flows from the liquid outlet  1016  to the liquid storage member and is absorbed by the liquid storage member, the heating member  102  heats the cigarette liquid adsorbed on the liquid storage member. In this way, the cigarette liquid does not accumulate in a large amount on the surface of the heating member  102 , the cigarette liquid can be surely heated in time to form smoke. 
     In the embodiment, the atomizing assembly  10  further includes a base  101  including an inner housing  1011  and an outer housing  1012 . The inner housing  1011  has a hollow cylindrical structure with an opening at the upper end, the heating member  102  and the collecting device are sequentially disposed from the top to the bottom in the inner cavity of the inner housing  1011 . The inner housing  1011  is located in the outer housing  1012 , the gap between the inner housing  1011  and the outer housing  1012  constitutes a liquid passage  1015 . The liquid intake hole  1017  is defined at the bottom of the outer housing  1012 , the liquid outlet  1016  is defined on the inner housing  1011  and adjacent to the upper end of the inner housing  1011 . It can be understood that, the number of the liquid intake hole  1017  the liquid outlet  1016  is at least one, the liquid outlet  1016  is at least one. In the embodiment, the number of the liquid intake port  1017  is one, the number of the liquid outlet  1016  is two, two liquid outlets  1016  are oppositely arranged. 
     It can be understood that, in other embodiments, the liquid passage  1015  can also be formed by other means, only make sure that the liquid passage  1015  is in communication with the liquid storage assembly  20  through the liquid intake hole  1017 , and in communication with the heating member  102  through the liquid outlet  1016 . For example, a communication tube is provided, the inner cavity of the communicating tube constitutes the liquid passage  1015 . 
     The relative positional relationship between the liquid outlet  1016  and the heating member  102  can be set according to actual needs, as long as the cigarette liquid can flow from the liquid outlet  1016  to the heating member  102 . 
     Referring to  FIG. 1  again, in one embodiment, the liquid outlet  1016  is located above the heating member  102 , the cigarette liquid in the liquid passage  1015  can flow to the upper surface of the heating member  102  through the liquid outlet  1016  under the force of gravity. The upper surface of the heating member  102  heats the cigarette liquid, thus the cigarette liquid is atomized into smoke. Smoke vents out through the opening at the upper end of the inner housing  1011  and the mouthpiece in sequence. In the embodiment, the heating member  102  has a flat shape. It will be appreciated that, in other embodiments, the upper surface of the heating member  102  is recessed downwardly, such that the upper surface of the heating member  102  is generally bowl-shaped. Thus, the cigarette liquid can easily flow from the circumferential side of the heating member  102  to the center of the heating member  102 , so that the cigarette liquid is evenly distributed on the upper surface of the heating member  102 . 
     Referring to  FIG. 2 , in another embodiment, the atomizing assembly  10  further includes a spraying member  105 . One end of the spraying member  105  is in communication with the liquid outlet  1016 , the opposite end of the spraying member  105  is provided with a spray head between the heating member  102  and the collecting device, the spray head faces the lower surface of the heating member  102 . Thus, the cigarette liquid in the liquid passage  1015  can be sprayed onto the lower surface of the heating member  102  through the spray head of the spraying member  105 . The pressure applied by the spray head to the cigarette liquid can disperse the cigarette liquid into small droplets. It is understood that, the small droplets are more easily heated and atomized by the heating member  102  than the liquid. In addition, by providing the spraying member  105 , the installation position of the liquid outlet  1016  is not limited, as long as the head is located between the heating member  102  and the collecting device, and the head towards to the lower surface of the heating member  102 . By disposing the spray head in this way, the sprayed cigarette liquid can be confined between the heating member  102  and the collecting device to prevent the cigarette liquid from splashing around and causing liquid leakage. In order to facilitate the outflow of smoke, the heating member  102  is provided with a through hole and/or a gap located between the heating member  102  and the inner housing  1011 . The smoke generated on the lower surface of the heating member  102  can flow to the opening of the upper end of the inner housing  1011  through the through hole and/or the gap, finally, it flows out through the mouthpiece. 
     In this embodiment, the collecting device is a liquid absorbing member  103 . The liquid absorbing member  103  is made of a porous material such as porous ceramic, cotton, cotton, glass fiber, metal foam, or the like. The liquid absorbing member  103  is disposed under the heating member  102 . It can be understood that, the upper surface of the liquid absorbing member  103  contacts with the lower surface of the heating member  102 , or the upper surface of the liquid absorbing member  103  is spaced apart from the lower surface of the heating member  102 , as long as the liquid absorbing member  103  can adsorb excess cigarette liquid. It can be understood that, the liquid absorbing member  103  has a liquid-locking function, no matter how the e-cigarette is placed, the excess cigarette liquid will not leak out of the collecting device. In this embodiment, on the one hand, the liquid absorbing member  103  is made of porous ceramic, so that the liquid absorbing member  103  can also withstand high temperature, preventing the liquid absorbing member  103  from being carbonized under the heat of the heating member  102 , and prolonging the liquid absorbing member  103 . On the other hand, the liquid absorbing member  103  is in contact with the heating member  102 . Thus, the cigarette liquid absorbed at the liquid absorbing member  103  can be reused, the liquid absorbing member  103  can be prevented from being replaced due to adsorption saturation. 
     It will be appreciated that, in other embodiments, other forms of collecting devices having a liquid locking function may also be provided. For example, the collecting device is a unidirectional collection chamber. Specifically, the collecting device includes a collection chamber and a unidirectional membrane, the collection chamber is provided with at least one opening, each opening being sealed by a unidirectional membrane. In this way, the cigarette liquid can enter the collection chamber through the unidirectional membrane, but due to the unidirectionality of the unidirectional membrane, it will not flow out of the collection chamber through the unidirectional membrane. In one embodiment, the unidirectional membrane is disposed under the heating member  102 , the circumferential side of the unidirectional membrane is sealingly attached to the peripheral wall of the inner housing  1011 , the inner cavity of the inner housing  1011  located below the unidirectional membrane constitutes a collecting chamber. 
     The liquid storage assembly  20  includes a liquid storage assembly  201  and a pump body  202 . The liquid storage assembly  201  is in communication with the pump body  202 . The pump body  202  is connected to the bottom of the base  101  to communicate with the liquid intake hole  1017 , so that the pump body  202  can pump the cigarette liquid in the liquid storage assembly  201  into the liquid passage  1015  through the liquid intake hole  1017 . 
     The liquid storage assembly  201  includes a liquid storage cartridge  2011  and a piston  2012 . One end of the liquid storage cartridge  2011  is connected to the pump body  202 , the piston  2012  is movably received in the opposite end of the liquid storage cartridge  2011 . It can be understood that, when the cigarette liquid in the liquid storage cartridge  2011  is reduced, the piston  2012  will move upward under the action of atmospheric pressure, whereby the pressure inside and outside of the liquid storage cartridge  2011  can be balanced, so that the pump body  202  can pump cigarette liquid in the liquid storage cartridge  2011 . It can be understood that, in other embodiments, the liquid storage cartridge  2011  is made of a soft material, when the cigarette liquid in the liquid storage cartridge  2011  is reduced, the liquid storage cartridge  2011  is contracted and deformed inward, can also play a role in balancing the pressure inside and outside of the liquid storage cartridge  2011 . 
     When assembling, one end of the pump body  202  is connected to the atomizing assembly  10 , the opposite end of the pump body  202  is connected to the liquid storage assembly  201 ; and then the atomizing assembly  10 , the pump body  202  and the liquid storage assembly  201  are housed in the outer casing. 
     As can be seen from the above, when the collecting device is the liquid absorbing member  103 , the collecting device has a state of adsorption saturation. The liquid absorbing member  103  in the state of adsorption saturation cannot continue to adsorb excess cigarette liquid. During use, when the liquid absorbing member  103  is saturated with cigarette liquid, the electronic cigarette will have a risk of liquid leakage. For this reason, it is necessary to detect the adsorption state of the liquid absorbing member  103  so as to stop the liquid supply and remind the user to replace the liquid absorbing member  103  when it is saturated. 
     Referring to  FIGS. 1 and 3 , the atomizing assembly  10  further includes a first detecting device  104 . The first detecting device  104  is disposed on the liquid absorbing member  103 , the first detecting device  104  is configured to detect the degree of saturation of the liquid absorbing member  103 . The battery assembly includes a controller  31  and a power source  32 . The controller  31  is electrically connected to the first detecting device  104 , the pump body  202 , and the power source  32 , respectively. The first detecting device  104  feeds back the detected the degree of saturation of the liquid absorbing member  103  to the controller  31 . The controller  31  compares the degree of saturation of the liquid absorbing member  103  fed back by the first detecting device  104  with a previously stored first threshold value. The first threshold value can be stored in a memory of the electronic cigarette or can be stored in a memory of another device (for example, a mobile phone, a computer, etc.), which is not limited herein. When the degree of saturation is less than the first threshold value, the controller  31  controls the pump body  202  to operate for a certain period of time (for example, 2 seconds), and after the certain period of operation, the controller  31  controls the first detecting device  104  to detect the degree of saturation of the liquid absorbing member  103  again. When the degree of saturation is greater than or equal to the first threshold value, the controller  31  controls the circuit between the pump body  202  and the power source  32  to be opened, so that the pump body  202  stops supplying liquid to the atomizing assembly  10 . The degree of saturation refers to the degree of infiltration by the cigarette liquid after the liquid absorbing member  103  absorbs the cigarette liquid. It can be understood that, the infiltration of the cigarette liquid into the liquid absorbing member  103  causes a change in physical quantities such as gravity, humidity, electric resistance, capacitance, etc., the first detecting device  104  detects one of the physical quantities which can be used to indicate the degree of saturation. When the degree of saturation is greater than or equal to the first threshold value, it indicates that the liquid absorbing member  103  has reached or approached the state of adsorption saturation, the liquid absorbing member  103  cannot continue to absorb furthermore excess cigarette liquid or the ability to absorb excess cigarette liquid is extremely weak. At this point, stopping liquid supply, the risk of liquid leakage can be reduced. 
     Further, the electronic cigarette further includes an alarm device  40 , the controller  31  is also electrically connected to the heating member  102  and the alarm device  40 . When the degree of saturation is less than the first threshold value, the controller  31  also controls the heating member  102  to operate for a certain period of time. It will be appreciated that, in one of the embodiments, the duration of operation of the heating member  102  is the same as the length of time the pump body  202  is operated. When the degree of saturation is greater than or equal to the first threshold value, the controller  31  also controls the circuit between the heating member  102  and the power source  32  to be opened and instruct the alarm device  40  to transmit an alarm signal. The alarm signal is configured to remind the user that the liquid absorbing member  103  cannot continue to absorb excess cigarette liquid or the ability to absorb excess cigarette liquid is extremely weak, whereby reminds the user to replace the liquid absorbing member  103 . The alarm device  40  can transmit an alarm signal by methods of vibration, ringing, displaying reminding message, or indicating lights. Disconnecting the circuit between the heating member  102  and the power source  32  can cause the temperature of the heating member  102  to gradually decrease, thereby allowing the user to change the liquid absorbing member  103  at a relatively safe temperature. 
     Referring to  FIG. 4 , a working flowchart of the electronic cigarette with the circuit shown in  FIG. 3  may include any or all of the following steps, and in orders other than described below. 
     Step S 101 , the first detecting device  104  detects the degree of saturation of the liquid absorbing member  103 , and feedback to the controller  31 , and then proceeds to step S 102 . 
     Step S 102 , the controller  31  compares the degree of saturation of the liquid absorbing member  103  with the first threshold value. When the degree of saturation is greater than or equal to the first threshold value, the process proceeds to step S 103 ; when the degree of saturation is less than degree of saturation of the first threshold value, the process proceeds to step S 104 . 
     Step S 103 , the controller  31  controls both the circuit between the pump body  202  and the power source  32  and the circuit between the heating member  102  and the power source  32  to be opened and instructs the alarm device  40  to transmit an alarm signal. 
     Step S 104 , the controller  31  controls both the circuit between the pump body  202  and the power source  32  and the circuit between the heating member  102  and the power source  32  to be turned on, the pump body  202  and the heating member  102  work for a certain period of time, and then returns to Step S 101 . 
     As can be seen from the above, in the embodiment, the liquid absorbing member  103  is attached to the heating member  102 . Therefore, when the liquid absorbing member  103  is at saturation, instead of prompting to the user to replace, the circuit between the pump body  202  and the power source  32  can be opened, so that the heating member  102  heats the cigarette liquid on the liquid absorbing member  103 . When the amount of absorbed cigarette liquid on the liquid absorbing member  103  decrease to a certain extent, the liquid absorbing member  103  will return to a state having a strong liquid absorbing ability. Specifically, the controller  31  compares the degree of saturation of the liquid absorbing member  103  with a second threshold value stored in advance, the second threshold value is less than the first threshold value. When the degree of saturation of the liquid absorbing member  103  is greater than or equal to the second threshold value, it indicates that there is no cigarette liquid or a small amount of cigarette liquid on the liquid absorbing member  103 , the liquid absorbing member  103  can be used normally again. Further, referring to  FIG. 5 , when the degree of saturation is greater than or equal to the first threshold value, instead of proceeding to step S 103 , the electronic cigarette proceeds to step S 201 , so that the electronic cigarette enters the self-cleaning mode from the working mode. In the self-cleaning mode, the workflow of the electronic cigarette is: 
     Step S 201 , the controller  31  controls the circuit between the pump body  202  and the power source  32  to be opened, and controls the circuit between the heating member  102  and the power source  32  to be turned on, so that the heating member  102  operates for a certain period of time, for example, 2 seconds; then, proceeding to step S 202 ; 
     Step S 202 , the first detecting device  104  detects the degree of saturation of the liquid absorbing member  103 , and feedback to the controller  31 , and then proceeds to step S 203 . 
     Step S 203 , the controller  31  compares the degree of saturation of the liquid absorbing member  103  with the second threshold value. When the degree of saturation is greater than the second threshold value, the process returns to step S 201 ; when the degree of saturation is less than the second threshold value, the process proceeds to step S 104 . 
     It can be understood that, when the degree of saturation is greater than or equal to the second threshold value, indicating that the self-cleaning has ended, the process proceeds to step S 104 . Such that, the electronic cigarette continues to work; or, the electronic cigarette receives a shutdown signal of the pump body  202  and a shutdown signal of the heating member  102 , to turn off the electronic cigarette. In one embodiment, in order to prevent the heating member  102  from being dry-burned due to the liquid storage assembly  20  not being supplied in time, when the electronic cigarette is used again after cleaning, after the self-cleaning, the liquid absorbing member  103  remains some of cigarette liquid. At this time, 0&lt;the second threshold value &lt; the first threshold value. 
     Referring again to  FIG. 1 , after use, some of cigarette liquid may remain in the liquid passage  1015 . Various measures can be taken out to prevent the cigarette liquid remained in the liquid passage  1015  from leaking. In one embodiment, a solenoid valve (not shown) is disposed in the liquid outlet  1016 . When the controller  31  receives the shutdown signal of the pump body  202  and the shutdown signal of the heating member  102  (indicating that the user desires to end the use of the electronic cigarette), the controller  31  controls both the circuit between the pump body  202  and the power source  32  and the circuit between the heating member  102  and the power source  32  to be opened, and instructs the solenoid valve to close the liquid outlet  1016 . In another embodiment, a second detecting device (not shown) is disposed at the liquid intake hole  1017 , when the controller  31  receives the shutdown signal of the pump body  202  and the shutdown signal of the heating member  102 , the controller  31  controls the circuit between the heating member  102  and the power source  32  to be opened, the pump body  202  is controlled to pump the cigarette liquid in the cigarette liquid passage  1015  into the liquid storage cartridge  2011  until the second detecting device detects that no more cigarette liquid flows. The liquid intake port  1017 , the controller  31  controls the circuit between the pump body  202  and the power source  32  to be opened. The second detecting device is a liquid sensing switch. 
     In the embodiment, by closing the pump body  202  and the heating member  102 , the liquid absorbing member  103  has sufficient capacity to absorb the cigarette liquid in the liquid passage  1015  to prevent liquid leakage. The controller  31  is also compared with a third threshold value stored in advance (the third threshold value&lt;the first threshold value), when the degree of saturation of the liquid absorbing member  103  is greater than or equal to the third threshold value, it indicates that the volume of the cigarette liquid that the liquid absorbing member  103  can further absorb is larger than the volume of the liquid passage  1015 . The degree of saturation Q=kx (“x” presents the volume of the adsorbed cigarette liquid, “k” is defined as the proportional coefficient), the volume in the liquid passage  1015  is b, the maximum liquid absorption of the liquid absorbing member  103  is a, the third threshold value≤k (ab). After use, the first detecting device  104  detects the degree of saturation of the liquid absorbing member  103 . When the degree of saturation of the liquid absorbing member  103  is less than the third threshold value, the heating element  102  stops heating. When the degree of saturation of the liquid absorbing member  103  is greater than or equal to the third threshold value, the heating member  102  continues to work until the degree of saturation of the liquid absorbing member  103  is less than the third threshold value. Therefore, it can be ensured that the liquid absorbing member  103  has sufficient capacity to absorb the cigarette liquid in the liquid passage  1015 , thereby reducing the risk of leakage. Referring to  FIG. 6 , the working steps of the electronic cigarette includes: 
     Step S 301 , the controller  31  receives the shutdown signal of the pump body  202  and the shutdown signal of the heating member  102 , and then proceeds to step S 302 ; 
     Step S 302 , the controller  31  controls the circuit between the pump body  202  and the power source  32  to be opened, and then proceeds to step S 303 ; 
     Step S 303 , the first detecting device  104  detects the degree of saturation of the liquid absorbing member  103 , and feedback to the controller  31 , and then proceeds to step S 304 ; 
     In step S 304 , the controller  31  compares the degree of saturation of the liquid absorbing member  103  with the third threshold value. When the degree of saturation is less than the third threshold value, the process proceeds to step S 305 . When the degree of saturation is greater than the third threshold value, the process proceeds to step S 306 . 
     Step S 305 , the controller  31  controls the circuit between the heating member  102  and the power source  32  to be opened; 
     Step S 306 , the controller  31  controls the circuit between the heating member  102  and the power source  32  to keep connecting, so that the heating member  102  continues to heating for a certain time, and then returns to the step S 303 . 
     It should be noted that, the heating member  102  is attached to the liquid absorbing member  103 . The heating member  102  can directly conduct heat to the liquid absorbing member  103 , thereby can accelerate the transfer of cigarette liquid absorbed in the liquid absorbing member  103  towards the heating element and reduce the degree of saturation of the liquid absorbing member  103 . It can be understood that, the heating member  102  and the liquid absorbing member  103  can also be spaced apart. The liquid absorbing member  103  is heated by the heat of the heating member  102  transferred by at least one of the following method: indirect heat conduction, heat convection, and heat radiation, thereby causing the cigarette liquid to be desorbed from the liquid absorbing member  103 . When the heating power of the heating member  102  is increased, even if the circuit between the pump body  202  and the power source  32  is connected, the cigarette liquid absorbed on the liquid absorbing member  103  can be reduced. 
     In addition, it should be noted that, the liquid passage  1015  has a certain length. In use, the cigarette liquid flows to the liquid outlet  1016 , and then flows to the heating member  102  through the liquid outlet  1016 . When there is no cigarette liquid at the liquid outlet  1016  before use, it will take a certain time after the pump body  202  is started, so that the cigarette liquid flows to the liquid outlet  1016  firstly. After the pump body  202  starts working, when the heating member  102  is activated before the cigarette liquid has flowed to the liquid outlet  1016 , the heating member  102  is easily dried. In one embodiment, a third detecting device is disposed at the liquid outlet  1016 . It can be understood that, when the third detecting device detects that the cigarette liquid flows through the liquid outlet  1016 , the third detecting device generates a trigger signal to enable the heating member  102  to start the heating function. The third detecting device is a liquid sensing switch. In another embodiment, the outer casing is provided with a partially transparent area, the transparent area of the outer casing is corresponding to the position of the liquid outlet  1016 . The transparent area is configured to observe whether there is cigarette liquid flowing to the liquid outlet  1016 . After observing the liquid flow into the liquid outlet  1016 , the user can activate the heating member  102 . 
     In the present disclosure, the collecting device is located below the heating member  102 , the collecting device can collect excess cigarette liquid, thereby preventing the electronic cigarette from leaking. When the collecting device is a liquid absorbing member  103 , the first detecting device  104  detects the degree of saturation of the liquid absorbing member  103 , the controller  31  compares the degree of saturation of the liquid absorbing member  103  with the first threshold value. When the wettability of the liquid absorbing member  103  is greater than or equal to the first threshold value, it is indicated that the liquid absorbing member  103  has reached or approached the adsorption saturation state. At this time, the user can replace the liquid absorbing member  103  or enable the self-cleaning mode to return the liquid absorbing member  103  to the usable state, thereby preventing the liquid absorbing member  103  from being used in a state that has reached or is close to the adsorption saturation, thereby reducing the risk of leakage. 
     The above-mentioned embodiments merely represent several implementations of the present application, and the descriptions thereof are more specific and detailed, but they shall not be understood as a limitation on the scope of the present application. It should be noted that, for those of ordinary skill in the art, variations and improvements may still be made without departing from the concept of the present application, and all of which shall fall into the protection scope of the present application. Therefore, the scope of protection of the present application shall be subject to the appended claims.