Patent Publication Number: US-9888718-B2

Title: Electronic cigarette

Description:
CROSS-REFERENCED APPLICATIONS 
     The present application is the national phase of International Application No. PCT/CN2014/072919, titled “ELECTYRONIC CIGARETTE”, filed on Mar. 5, 2014, which claims the priority to Chinese Patent Application No. 201420074442.6, entitled “ELECTRONIC CIGARETTE”, filed on Feb. 20, 2014 with the State Intellectual Property Office of the PRC, which are incorporated herein by reference in their entireties. 
     BACKGROUND 
     1. Field of the Disclosure 
     The application relates to the technical field of electronic cigarette, and in particular, to an electronic cigarette having portability and high security. 
     2. Discussion of the Background Art 
     Reference is made to  FIG. 1 , which shows a detailed structure of a conventional electronic cigarette. According to  FIG. 1 , the conventional electronic cigarette includes an atomizing assembly and a battery rod assembly. The atomizing assembly is provided with a suction end  100 , a liquid storage cotton  110  for storing cigarette liquid, and an electric heating wire assembly  120  for heating up to atomize the cigarette liquid. Two ends of an electric heating wire in the electric heating wire assembly  120  are respectively electrically connected to atomizing electrodes located at an end of the atomizing assembly, and are electrically connected to the battery rod assembly via the atomizing electrode. The battery rod assembly is provided with a battery  130  for supplying power to the electric heating wire assembly  120 , and the liquid storage cotton  110  is arranged near the suction end  100 . Further, as shown in  FIG. 1  inside the electric cigarette, an aerosol passage is formed along the axis of the liquid storage cotton, and the suction end  100  communicates with an air inlet located on the battery rod assembly via the aerosol passage. When the electronic cigarette operates, the cigarette liquid in the liquid storage cotton  110  is atomized by the atomizing assembly, and the aerosol generated after atomization flows through the aerosol passage and is further inhaled by a user through the suction end  100 . 
     However conventionally, both the atomizing assembly and the battery rod assembly are exposed outside the electronic cigarette. Therefore, the user is apt to be scalded when the atomizing assembly works or in the case that an excessive discharging is caused due to, for example, a short circuit in the battery rod assembly, which results in poor user experience. In addition, if excessive discharging is caused due to, for example, the short circuit in the battery rod assembly and heat can not be dissipated rapidly, potential safety hazard exists. 
     SUMMARY 
     In view of this, a portable electronic cigarette is provided in the present application. 
     An electronic cigarette includes: 
     an electronic cigarette body; 
     where the electronic cigarette body includes a suction end, a liquid container for containing a cigarette liquid, an atomizing assembly for atomizing the cigarette liquid, and a battery rod assembly for supplying power to the atomizing assembly; and 
     the atomizing assembly and the battery rod assembly are inserted in the liquid container. 
     The electronic cigarette further includes: 
     a connector; 
     where one end of the connector is arranged as the suction end; and 
     the other end of the connector is detachablely connected with the liquid container; 
     where a first connecting part and a second connecting part are provided in the connector; 
     the battery rod assembly is detachablely connected to the connector via the first connecting part; and 
     the atomizing assembly is detachablely connected to the connector via the second connecting part. 
     In the electronic cigarette, the first connecting part and the second connecting part are arranged parallelly, and the atomizing assembly and the battery rod assembly are parallelly arranged in the liquid container. 
     In the electronic cigarette, a first electrode for electrically connecting with a battery electrode of the battery rod assembly is provided in the first connecting part; 
     a first insulation ring is provided between the first connecting part and the first electrode; 
     a second electrode for electrically connecting with an atomizing electrode of the atomizing assembly is provided in the second connecting part; 
     a second insulation ring is provided between the second connecting part and the second electrode; and 
     the first electrode and the second electrode are electrically connected. 
     In the electronic cigarette, the suction end is formed by an extension of an end portion of the connector; or the suction end is detachablely connected with the connector. 
     In the electronic cigarette, an accommodating part for accommodating the atomizing assembly is provided in the battery rod assembly; 
     the atomizing assembly is arranged inside the accommodating part; and a third connecting part configured to be detachablely connected with the atomizing assembly is provided at an end portion of the battery rod assembly, the end portion of the battery rod assembly being connected with the atomizing assembly. 
     In the electronic cigarette, a third electrode and a fourth electrode for electrically connecting with atomizing electrodes of the atomizing assembly are provided in the third connecting part; 
     the third electrode and the fourth electrode are electrically connected with battery electrodes of the battery rod assembly; and 
     a third insulation ring is provided between the third electrode and the fourth electrode. 
     In the electronic cigarette, the liquid container which accommodates the battery rod assembly is detachablely connected with the suction end; and 
     the battery rod assembly and the suction end are detachablely connected; or 
     the suction end is formed by an extension of an end portion of the battery rod assembly. 
     In the electronic cigarette, a sealing ring for sealing the liquid container is provided at a position where the connector connects with the liquid container. 
     In the electronic cigarette, at least one air inlet which communicates with the suction end and is isolated from the liquid container is provided on the electronic cigarette body. 
     In the electronic cigarette, the liquid container and the connector are detachablely connected via a screw thread or a rotatable snap; 
     the battery rod assembly and the first connecting part are detachablely connected via a screw thread or a rotatable snap; and 
     the atomizing assembly and the second connecting part are detachablely connected via a screw thread or a rotatable snap. 
     In the electronic cigarette, the suction end and the connector are detachablely connected via a screw thread or a rotatable snap. 
     In the electronic cigarette, the liquid container and the suction end are detachablely connected via a screw thread or a rotatable snap; and 
     the battery rod assembly and the suction end are detachablely connected via a screw thread or a rotatable snap. 
     In the electronic cigarette, a sealing gasket for sealing the liquid container is provided at a position where the connector connects with the liquid container. 
     In the electronic cigarette, the liquid container is a transparent container. 
     In the electronic cigarette, the liquid container is a glass bottle. 
     In the electronic cigarette, the liquid container is coated by a protective cartridge and the protective cartridge is provided with a cigarette liquid observation window. 
     According to the technical solution described above, the electronic cigarette provided in the present application includes the electronic cigarette body; the electronic cigarette body is provided with the suction end, the liquid container for containing the cigarette liquid, the atomizing assembly for atomizing the cigarette liquid and the battery rod assembly for supplying power to the atomizing assembly; the atomizing assembly and the battery rod assembly are inserted in the liquid container. The battery rod assembly and the atomizing assembly of the electronic cigarette provided in the application are inserted in the liquid container, such that the whole structure of the electronic cigarette is compact and the external size of the electronic cigarette is small, which is convenient for the user to carry the electronic cigarette. In addition, since the battery rod assembly and the atomizing assembly are inserted in the liquid container, the user may not get scalded when the atomizing assembly works or in the case that an excessive discharging is caused due to, for example, a short circuit in the battery rod assembly, therefore increasing the user experience. Furthermore, the heat can be rapidly dissipated through the heat absorption of the cigarette liquid in the liquid container in the case that the excessive discharging is caused due to, for example, a short circuit in the battery rod assembly located inside the liquid container, therefore avoiding potential safety hazard and improving the security. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       For more clearly illustrating technical solution of embodiments of the present application or the conventional technologies, drawings to be used in descriptions of the embodiments or the conventional technologies are briefly introduced below. Apparently, the drawings are used to illustrate only some embodiments of the present application, and those of ordinary skill in the art may obtain other drawings, based on these drawings, without any creative efforts. 
         FIG. 1  is a schematic sectional view showing the whole structure of a conventional electronic cigarette; 
         FIG. 2  is a schematic sectional view showing a whole electronic cigarette according to a preferred embodiment of the present application; 
         FIG. 3  is an exploded structural view of the electronic cigarette provided in the present application as shown in  FIG. 2 ; 
         FIG. 4  is a schematic sectional view showing a whole electronic cigarette according to another preferred embodiment of the present application; and 
         FIG. 5  is an exploded structural view of the electronic cigarette provided in the present application as shown in  FIG. 4 . 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     The present application discloses a portable electronic cigarette, and the structure of the electronic cigarette is shown in  FIG. 2 . 
     The electronic cigarette includes an electronic cigarette body. 
     A suction end  201  is arranged on a top end of the electronic cigarette body. A user may smoke through the suction end  201 . 
     A liquid container  202  is provided to store a cigarette liquid, that is, an atomizable cigarette liquid is stored in the liquid container  202 . 
     An atomizing assembly  203  is provided to atomize the cigarette liquid, that is, the cigarette liquid in the liquid container  202  can be atomized by the atomizing assembly  203 . 
     The electronic cigarette further includes a battery rod assembly  204  which supplies power to the atomizing assembly  203 . 
     To prevent the user from getting scalded by the electronic cigarette provided in the present application when the atomizing assembly  203  works or in the case that an excessive discharging is caused due to, for example, a short circuit in the battery rod assembly  204 , and to avoid potential safety hazard in the case that an excessive discharging is caused due to, for example, a short circuit in the battery rod assembly  204 , the atomizing assembly  203  and the battery rod assembly  204  are inserted in the liquid container  202 . 
     Since the atomizing assembly  203  and the battery rod assembly  204  are accommodated in the liquid container  202  of the electronic cigarette according to the embodiment, heat dissipated from the atomizing assembly  203  and the battery rod assembly  204  can be dissipated out via the liquid container  202 , thereby avoiding potential safety hazard due to poor heat dissipation of the electronic cigarette. In addition, since the atomizing assembly  203  and the battery rod assembly  204  are not exposed outside the electronic cigarette body, the user may not directly touch the atomizing assembly  203  and the battery rod assembly  204 , thereby effectively preventing the user from getting scalded. 
     The atomizing assembly  203  and the battery rod assembly  204  are parallelly arranged in the liquid container  202 . Consequently, the electronic cigarette has a compact structure and an external size smaller than that of a conventional electronic cigarette in which the atomizing assembly and the battery rod assembly are arranged coaxially, and is convenient for the user to carry. 
     The specific structure of the electronic cigarette provided in the present application is further detailed hereinafter in conjunction with  FIG. 2 . According to an embodiment shown in  FIG. 2 , the electronic cigarette further includes a connector  205 . 
     The suction end  201  is arranged on one end of the connector  205 . 
     The suction end  201  is formed by extending one end of the connector  205 , that is, the suction end  201  and the connector  205  are arranged integratedly. Or, the suction end  201  and the connector  205  are detachablely connected, such that the user can replace the suction end  201  at any time. 
     The suction end  201  and the connector  205  are detachablely connected via a screw thread or a rotatable snap. A specific connecting structure is not limited in the embodiment, as long as the suction end  201  and the connector  205  are detachablely connected. 
     The other end of the connector  205  and the liquid container  202  are detachablely connected, and the user can replace the liquid container  202  or add cigarette liquid into the liquid container  202  based on needs at any time. 
     Specifically, the liquid container  202  and the connector  205  are detachablely connected via a screw thread or a rotatable snap. A specific structure for connecting the liquid container  202  and the connector  205  is not limited in the embodiment, as long as the liquid container  202  and the connector  205  are detachablely connected. 
     A first connecting part  206  and a second connecting part  207  are provided in the connector  205 . 
     A specific structure of the connector  205  is shown in  FIG. 3 . 
     As shown in  FIG. 3 , the battery rod assembly  204  in the liquid container  202  is detachablely connected with the connector  205  via the first connecting part  206 . 
     The atomizing assembly  203  in the liquid container  202  is detachablely connected with the connector  205  via the second connecting part  207 . 
     Since the battery rod assembly  204  and the connector  205  are detachablely connected via the first connecting part  206 , the user can detach the battery rod assembly  204  based on needs at any time. 
     Since the atomizing assembly  203  and the connector  205  are detachablely connected via the second connecting part  207 , the user can detach the atomizing assembly  203  based on needs at any time. 
     Further, with reference to  FIGS. 2 and 3 , the first connecting part  206  and the second connecting part  207  are parallelly arranged, such that the atomizing assembly  203  and the battery rod assembly  204  are parallelly arranged in the liquid container  202 . 
     Of course, it is merely an example that the atomizing assembly  203  and the battery rod assembly  204  are parallelly arranged in the liquid container  202  in the embodiment. Alternatively, one of the atomizing assembly  203  and the battery rod assembly  204  locates higher while the other locates lower, or the atomizing assembly  203  and the battery rod assembly  204  are arranged coaxially. A specific arranging manner is not limited herein as long as the atomizing assembly  203  and the battery rod assembly  204  are inserted inside the liquid container  202 . 
     Reference is further made to  FIG. 3 , how the battery rod assembly  204  and the atomizing assembly  203  are connected to the connector  205  is described in detail hereinafter. To make the structure of the electronic cigarette body simpler and more compact to facilitate assembling and increasing production efficiency, the connector  205  is made of a conductive material, preferably made of a metallic material, such that an electric connection between one atomizing electrode in the atomizing assembly  203  and one battery rod electrode  208  in the battery rod assembly  204  is directly achieved through the connector  205 . 
     As shown in  FIG. 3 , a first electrode  209  to be electrically connected with one battery rod electrode  208  of two battery rod electrodes  208  of the battery rod assembly  204  is provided in the first connecting part  206 . The battery rod electrodes  208  are electrically connected with battery electrodes in the battery rod assembly  204 , such that an electric connection between the first electrode  209  and one battery electrode is realized. 
     A first insulation ring  210  is provided between the first connecting part  206  and the first electrode  209 . 
     The battery rod assembly  204  and the first connecting part  206  are detachablely connected via a screw thread or a rotatable snap. In an embodiment, the battery rod assembly  204  is connected with the connector  205  via another battery rod electrode provided with an external thread, thereby achieving a connection between the connector  205  and one battery electrode. 
     The battery rod assembly  204  further includes: 
     a battery  2041 ; 
     a battery protective cartridge  2042  for accommodating and protecting the battery  2041 ; 
     an airflow sensor  2043  for sensing a suction performed by the user; and 
     a microcontroller electrically connected with the airflow sensor  2043 , where in the case that the airflow sensor senses a suction performed by the user, the microcontroller controls an electric heating wire  2033  of the atomizing assembly  203  to atomize the cigarette liquid, to generate aerosol to be inhaled by the user. 
     A battery rod electrode insulation ring  2044  is arranged around one battery rod electrode  208  which is located at a central portion, to isolate two battery rod electrodes  208  from each other. 
     In the embodiment, the battery rod assembly  204  and the first connecting part  206  may be connected via other connecting structures and the specific connecting structures are not limited in the embodiment. 
     A second electrode  212  to be electrically connected with one atomizing electrode  211  of two atomizing electrodes  211  in the atomizing assembly  203  is provided in the second connecting part  207 . 
     A second insulation ring  213  is provided between the second connecting part  207  and the second electrode  212 . 
     The first electrode  209  and the second electrode  212  are electrically connected. 
     The atomizing assembly  203  further includes: 
     an electric heating wire  2033  for atomizing the cigarette liquid, where one end of the electric heating wire  2033  is electrically connected to the second electrode  212  via one atomizing electrode  211 , and the other end of the electric heating wire  2033  is electrically connected to the connector  205  via the other atomizing electrode  211 ; 
     an atomizing cartridge  2031 , where a liquid guiding through hole for conveying the cigarette liquid, and the cigarette liquid in the liquid container  202  can be guided into the atomizing cartridge  2031  via the liquid guiding through hole; 
     a liquid guiding cotton  2032 , which is arranged inside the atomizing cartridge  2031  and is for conveying the cigarette liquid to the electric heating wire  2033 ; and 
     an atomizing electrode insulation ring  2034 , which is arranged around the atomizing electrode  211 . 
     Preferably, the battery rod assembly  203  and the second connecting part  207  are detachablely connected via a screw thread or a rotatable snap. A specific connecting structure is not limited in the embodiment as long as the battery rod assembly  203  and the second connecting part  207  are detachablely connected. 
     In order to prevent a leakage of the cigarette liquid in the liquid container  202 , a sealing gasket  214  for sealing the liquid container  202  is provided at a position where the connector  205  connects with the liquid container  202 . 
     To enable the user to acquire the volume of the cigarette liquid remained in the liquid container  202 , the liquid container  202  is a transparent container, so that the user can acquire, with the transparent liquid container  202 , the volume of the remained cigarette liquid in the electronic cigarette at any time and may replace the liquid container  202  timely and conveniently. 
     Preferably, the liquid container  202  is a glass bottle. Since glass has a steady property, the smell of the cigarette liquid is prevented from getting affected due to, for example, a chemical reaction. 
     Preferably, a scale is provided on an outer circumferential wall of the liquid container  202  made of glass, such that the user can estimate an available time duration to inhale with the remained cigarette liquid, which is convenient for usage. 
     Preferably, the liquid container  202  is provided with a protective cartridge (not shown in the figure) to prevent the liquid container  202  made of glass from getting broken due to falling down. 
     Preferably, the protective cartridge is provided with a cigarette liquid observation window for observing the cigarette liquid by the user. 
     According to the embodiment, the battery rod assembly  204  and the atomizing assembly  203  are inserted in the liquid container  202 , such that the whole structure of the electronic cigarette is compact and the external size of the electronic cigarette is small, which is convenient for the user to carry the electronic cigarette. Since the battery rod assembly  204  and the atomizing assembly  203  are inserted in the liquid container  202 , the user may not get scalded when the atomizing assembly  203  works or in the case that an excessive discharging is caused due to, for example, a short circuit occurs in the battery rod assembly  204 , therefore increasing the user experience. Furthermore, the heat can be rapidly dissipated through the heat absorption of the cigarette liquid in the liquid container in the case that the excessive discharging is caused due to, for example, a short circuit in the battery rod assembly  204  located inside the liquid container  202 , therefore avoiding potential safety hazard and improving the security. 
     An airflow passage in the electronic cigarette provided in the present application is described in detail hereinafter in conjunction with  FIG. 2 . 
     The electronic cigarette body is provided with at least one air inlet  215  which communicates with the suction end  201  and is isolated from the liquid container  202 . 
     An airflow passage for communicating the suction end  201  and the air inlet  215  is formed in the electronic cigarette body. The airflow passage in the electronic cigarette is shown in  FIG. 2 . 
     The user sucks at the suction end  201 ; after the atomizing assembly  203  senses a suction performed by the user, the electric heating wire  2033  of the atomizing assembly  203  is controlled to atomize the cigarette liquid stored in the liquid container  202  to generate an aerosol, and the aerosol generated through atomization flows to the suction end  201  via the airflow passage, where a specific flowing direction is indicated by arrows in  FIG. 2 ; with the aerosol flowing in the airflow passage, the user may inhale the atomized cigarette liquid. 
     It should be noted that, the specific number of the air inlet  215  is not limited in the embodiment, as long as the air inlet  215  in communication with the airflow passage is isolated from the liquid container  202 , that is, the airflow passage through which the aerosol flows is isolated from the liquid container  202 . Hence, the aerosol generated through the atomization performed by the electric heating wire  2033  may not pass a storage area of the cigarette liquid during flowing in the airflow passage. 
     Since the aerosol generated through the atomization may not pass the storage area of the cigarette liquid in the embodiment, the cigarette liquid which is not atomized may not be conveyed to the suction end  201  and may not be inhaled by the user. 
     In addition, since the aerosol generated through the atomization may not pass the storage area of the cigarette liquid, the aerosol generated through the atomization may not get condensed due to a heat absorption of the cigarette liquid and may not affect electronic elements in the battery rod assembly  204  and the atomizing assembly  203 , which effectively ensures the lifetime of the electronic cigarette. 
     Another structure of the electronic cigarette provided in the present application is described in detail hereinafter in conjunction with an embodiment shown in  FIG. 4 . In the embodiment, there is no need to arrange a connector between a liquid container and a suction end, which can be seen with reference to  FIG. 4 . 
     An electronic cigarette shown in  FIG. 4  includes: 
     an electronic cigarette body. 
     The electronic cigarette body is provided with a suction end  401 , a liquid container  404  for containing a cigarette liquid, an atomizing assembly  403  for atomizing the cigarette liquid, and a battery rod assembly  402  for supplying power to the atomizing assembly  403 . 
     The liquid container  404  for accommodating the battery rod assembly  402  is detachablely connected with the suction end  401 . The suction end  401  and the liquid container  404  are detachablely connected via a screw thread or a rotatable snap. 
     The battery rod assembly  402  and the suction end  401  are detachablely connected. Or, the suction end  401  is formed by an extension of an end portion of the battery rod assembly  402 , that is, the battery rod assembly  402  and the suction end  401  are arranged to be integrated. 
     The atomizing assembly  403  and the battery rod assembly  402  are inserted in the liquid container  404 . 
     Specifically, the atomizing assembly  403  is inserted in the battery rod assembly  402 . 
     A specific arranging manner is shown in  FIG. 5 . 
     A specific structure of battery rod assembly  402  in which the atomizing assembly  403  is inserted is described in detail in conjunction with  FIG. 5 . 
     An accommodating part  501  for accommodating the atomizing assembly  403  is provided in the battery rod assembly  402 . 
     The atomizing assembly  403  is arranged inside the accommodating part  501 . 
     A third connecting part  502  used to be detachablely connected with the atomizing assembly  403  is provided at an end portion of the battery rod assembly  402 , where the end portion connects with the atomizing assembly  403 . 
     The atomizing assembly  403  is detachablely connected to the battery rod assembly  402  via the third connecting part  502 . The whole connecting structure is shown in  FIG. 4 . 
     Specifically, a third electrode  503  and a fourth electrode  504  to be electrically connected with the atomizing electrodes of the atomizing assembly  403  are provided in the third connecting part  502 . Preferably, the third electrode  503  and the fourth electrode  504  may be spring electrodes, thereby increasing the performance of electrical contact. 
     Specifically, the fourth electrode  505  is sleeved on the third electrode  503 , or the third electrode  503  is sleeved on the fourth electrode  505 . 
     The third electrode  503  and the fourth electrode  505  are electrically connected with the battery rod electrode  405  of the battery rod assembly  402 , that is, the third electrode  503  and the fourth electrode  505  are respectively electrically connected to battery electrodes on two ends of a battery in the battery rod assembly  402 , that is, the third electrode  503  and the fourth electrode  505  are electrically connected to the anode and the cathode of the battery respectively. 
     A third insulation ring  506  is provided between the third electrode  503  and the fourth electrode  505 . 
     As shown in  FIG. 4 , a sealing ring  406  for sealing the liquid container  404  is provided at a position where the liquid container  404  connects with the suction end  401 . With the sealing ring  406 , the cigarette liquid in the liquid container  404  is prevented from leaking out. 
     As shown in  FIG. 5 , a small sealing ring  504  is arranged at a place where the bottom of the accommodating part  501  abuts against the atomizing assembly  403 . The atomizing assembly  403  is sealed by the small sealing ring  504 . 
     Preferably, to enable the user to replace the liquid container  404  of the electronic cigarette based on needs at any time, the liquid container  404  and the suction end  401  are detachablely connected via a screw thread or a rotatable snap. Of course, other connecting manners may be employed and the specific connecting manner is not limited in the embodiment. 
     To enable the user to replace or charge the battery rod assembly  402  based on needs at any time, the battery rod assembly  402  and the suction end  401  are detachablely connected via a screw thread or a rotatable snap. Of course, other connecting manners may be employed and the specific connecting manner is not limited in the embodiment. 
     References can be made to the above embodiments to understand specific structures of the battery rod assembly  402  and the atomizing assembly  403 , which are not described in the embodiment. 
     Preferably, an airflow passage in the electronic cigarette provided in the present application is described in detail in conjunction with  FIG. 4 . 
     The electronic cigarette body is provided with at least one air inlet  407  which communicates with the suction end  401  and is isolated from the liquid container  404 . 
     The airflow passage for communicating the suction end  401  and the air inlet  407  is formed in the electronic cigarette body. The user sucks at the suction end  401 ; after the atomizing assembly  403  senses a suction performed by the user, the electric heating wire of the atomizing assembly  403  is controlled to atomize the cigarette liquid stored in the liquid container  404  to generate an aerosol, and the aerosol generated through atomization flows to the suction end  401  via the airflow passage, where a specific flowing direction is indicated by arrows in  FIG. 4 ; with the aerosol flowing in the airflow passage, the user may inhale the atomized cigarette liquid. 
     It should be noted that, the specific number of the air inlet  407  is not limited in the embodiment, as long as the air inlet  407  in communication with the airflow passage is isolated from the liquid container  404 , that is, the airflow passage through which the aerosol flows is isolated from the liquid container  404 . Hence, the aerosol generated through the atomization performed by the electric heating wire may not pass the liquid container  404  during flowing in the airflow passage. 
     Since the aerosol generated through the atomization may not pass the liquid container  404  in the embodiment, the cigarette liquid which is not atomized may not be conveyed to the suction end  401  and may not be inhaled by the user. 
     In addition, since the aerosol generated through the atomization may not pass a storage area of the cigarette liquid, the aerosol generated through the atomization may not get condensed due to a heat absorption of the cigarette liquid and may not affect electronic elements in the battery rod assembly  402  and the atomizing assembly  403 , which effectively ensures the lifetime of the electronic cigarette. 
     Preferably, the airflow passages shown in  FIGS. 2 and 4  may not be provided purposely, and the aerosol generated by the electric heating wire flows to the suction end through space between electronic elements in the electronic cigarette. In this way, the assembling efficiency may be increased and the assembling is simplified. 
     Of course, to ensure a long lifetime for the electronic cigarette and to prevent functions of the electronic elements in the electronic cigarette from getting affected by the aerosol, the airflow passages are arranged to be isolated from both the battery rod assembly and the atomizing assembly. 
     Specific arranging manners for the airflow passages are not limited in the present application. 
     Furthermore, it is merely an example that the battery rod assembly provided in the present application senses a suction performed by the user through an airflow sensing switch. A specific way of sensing the suction performed by the user to control the electric heating wire to atomize the cigarette liquid is not limited herein. For example, a button switch may be arranged on the electronic cigarette, and the user may press the button switch to automatically control the electric heating wire to atomize the cigarette liquid, while the user does not need to suck at the suction end. 
     The technical solutions in the embodiments of the present application are described clearly and completely hereinafter in conjunction with the drawings in the embodiments of the present application. Apparently, the described embodiments are only a part of but not all of the embodiments of the present application. Based on the embodiments in the present application, all of other embodiments made by the person skilled in the art without any creative efforts fall into the protection scope of the present application, for example, the microcontroller is connected with a loudspeaker which is controlled by the microcontroller to make a sound of water during smoking to simulate a hookah, or the atomizing assembly and the battery rod assembly are arranged to be in other structures and of other shapes. 
     The embodiments in the specification are described in a progressive way, each of which emphasizes on the differences from the other ones, and among which the identical or similar parts can be referred to each other. 
     Based on the above description of the embodiments, the person skilled in the art is capable of carrying out or using the present application. It is obvious for the person skilled in the art to make many modifications to these embodiments. The general principle defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments illustrated herein, but should be defined by the broadest scope consistent with the principle and novel features disclosed herein.