US20150020831A1 - Charging electronic cigarette - Google Patents

Charging electronic cigarette Download PDF

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Publication number
US20150020831A1
US20150020831A1 US14/366,560 US201214366560A US2015020831A1 US 20150020831 A1 US20150020831 A1 US 20150020831A1 US 201214366560 A US201214366560 A US 201214366560A US 2015020831 A1 US2015020831 A1 US 2015020831A1
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US
United States
Prior art keywords
electronic cigarette
battery
electrical contacts
generating device
aerosol generating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US14/366,560
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English (en)
Inventor
Aaron Arye Weigensberg
Shmuel Gavrielov
Sammy Capuano
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Altria Israel Ltd
Original Assignee
SIS Resources Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SIS Resources Ltd filed Critical SIS Resources Ltd
Priority to US14/366,560 priority Critical patent/US20150020831A1/en
Assigned to SIS RESOURCES LTD. reassignment SIS RESOURCES LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GAVRIELOV, Shmuel, WEIGENSBERG, Aaron Arye, CAPUANO, SAMMY
Publication of US20150020831A1 publication Critical patent/US20150020831A1/en
Assigned to Nu Mark Innovations Ltd. reassignment Nu Mark Innovations Ltd. CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: SIS RESOURCES LTD.
Abandoned legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/50—Control or monitoring
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/90—Arrangements or methods specially adapted for charging batteries thereof
    • A24F47/008—
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A24F40/46—Shape or structure of electric heating means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M15/00—Inhalators
    • A61M15/06—Inhaling appliances shaped like cigars, cigarettes or pipes
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/10—Devices using liquid inhalable precursors

Definitions

  • This invention relates to tobacco product avoidance. More particularly, this invention relates to a charger for a battery-operated electronic cigarette for limiting exposure to tobacco fumes.
  • Tobacco-containing smoking devices are known.
  • U.S. Pat. No. 7,726,320 which is herein incorporated by reference, proposes a cigarette incorporated within an electrically powered aerosol generating device that acts as a holder for that cigarette.
  • the smoking device possesses at least one form of tobacco.
  • the smoking device also possesses a mouth-end piece that is used by the smoker to inhale components of tobacco that are generated by the action of heat upon components of the cigarette.
  • a representative smoking device possesses an outer housing incorporating a source of electrical power (e.g., a battery), a sensing mechanism for powering the device at least during periods of draw, and a heating device (e.g., at least one electrical resistance heating element) for forming a thermally generated aerosol that incorporates components of tobacco.
  • a source of electrical power e.g., a battery
  • a sensing mechanism for powering the device at least during periods of draw
  • a heating device e.g., at least one electrical resistance heating element
  • European patent document EP 1 736 065 proposes an electronic cigarette containing nicotine without tar, which includes a shell and a suction nozzle.
  • On the exterior wall of the shell there is an air orifice, while there are an electronic circuit board, a constant pressure cavity, a sensor, a gas liquid separator, an atomizer, and a supplying bottle orderly located in the interior of the shell, wherein the electronic circuit board consists of an electronic switching circuit and a high-frequency generator.
  • At one side of the sensor there is an air duct.
  • a negative pressure cavity is located in the sensor.
  • the atomizer connects with the supplying bottle, and there is an atomizing cavity located in the atomizer.
  • the aerosol generating device of an electronic cigarette includes a heating element, which is typically a wire having high electrical resistance.
  • Rechargeable batteries housed within the electronic cigarette are generally used to power the aerosol generating device.
  • the aerosol generating device is generally used to power the aerosol generating device.
  • the present invention in certain embodiments thereof, seeks to provide an improved electronic cigarette, which is connectable to a battery charger without disassembly of the cigarette.
  • an electronic cigarette charging system including a rechargeable electronic cigarette having first and second electrical contacts, a cradle that is connectable to a battery charger and includes a receiving element adapted to receive the end of the electronic cigarette.
  • the receiving element has electrically conductive first and second contacts, which have first and second contact surfaces for contacting the first and second electrical contacts of the electronic cigarette, respectively to thereby establish an electrical connection with the battery charger.
  • the first and second electrical contacts of the electronic cigarette are magnetically attractive to the first and second contact surfaces of the receiving element, respectively.
  • At least one of the first and second contact surfaces of the receiving element is a magnet.
  • At least one of the first and second contacts of the electronic cigarette is a magnet.
  • the end of the electronic cigarette includes an adaptor, which has an orifice formed therethrough and an inset for receiving a conductive flange.
  • the orifice is disposed such that an extension of the flange is placed in contact with one of the first and second contacts of the receiving element when the electronic cigarette is in the cradle.
  • the adaptor includes at least one side groove for receiving a contact pin to contact another of the first and second contacts of the receiving element.
  • the adaptor has vents formed therein to permit ambient air to enter an interior of the electronic cigarette.
  • the end of the electronic cigarette includes an adaptor having a sensor unit housed in an interior chamber thereof, and has a perforation extending from the interior chamber to an exterior of the electronic cigarette to place the interior chamber in fluid communication with ambient atmosphere.
  • the end of the electronic cigarette includes an adaptor, the adaptor has a cap.
  • a lip and a conductive flange on the cap are adapted for contacting one of the first and second contact surfaces of the receiving element.
  • a conductive coaxial member on the adaptor has an extension, and an insert attached to the lip, wherein the insert has an orifice formed therethrough for receiving the extension of the coaxial member. The orifice is disposed such that the extension of the coaxial member is placed in contact with another of the first and second contacts of the receiving element when the electronic cigarette is in the cradle.
  • the adaptor has vents formed therein to permit ambient air to enter an interior of the electronic cigarette.
  • the insert has a translucency and diffusing property sufficient to prevent recognition of structures and shadows within the electronic cigarette when the insert is illuminated from by a light source disposed within the electronic cigarette.
  • an electronic cigarette charging system including an electronic cigarette having a first set of electrical contacts, an aerosol generating device and a rechargeable battery for powering the aerosol generating device.
  • An electrode assembly connectable to a power source has a second set of electrical contacts that are arranged to mate with the first set of electrical contacts, whereupon the electronic cigarette receives power via the electrode assembly for recharging the battery while remaining operational for use by a smoker.
  • Electrical circuitry is connected to the first set of electrical contacts, the electrical circuitry including a first circuit for supplying battery power to the aerosol generating device and a second circuit for providing power from a battery charger to the battery for recharging thereof. The first circuit is cooperative with the second circuit to disable power flow via the electrode assembly to the battery when the aerosol generating device is activated and to resume the power flow when the aerosol generating device ceases to be activated.
  • the second set of electrical contacts includes respective ferromagnetic disks that are bonded to lead wires that are connectable to the battery charger, and magnets held by magnetic attraction in contact with the disks.
  • the first set of electrical contacts are disposed at an end of the electronic cigarette.
  • the first set of electrical contacts are disposed at a side portal of the electronic cigarette.
  • Still another aspect of the system includes a cradle receiving the electronic cigarette and has the second set of electrical contacts disposed therein.
  • An additional aspect of the system includes a universal serial bus adaptor linked to the second set of electrical contacts for connection to the power source.
  • the electrical circuitry includes a pressure sensor, a transistor coupled to the battery and the first set of electrical contacts, a microprocessor, and electronic logic, wherein the microprocessor is responsive to the sensor and the electronic logic to regulate the transistor to enable and disable power flow to the battery via the first set of electrical contacts.
  • an electronic cigarette including an aerosol generating device, a rechargeable battery for powering the aerosol generating device, and an adaptor that has a first set of electrical contacts connectable to a battery charger.
  • the adaptor is disposed at an end of the electronic cigarette and includes an outer metallic band having an extension that is exposed to an interior space of the electronic cigarette, an inner metallic plug exposed to the interior space of the electronic cigarette, and an electrically nonconductive intermediate member separating the band from the plug and has a channel formed therein that extends from an exterior of the electronic cigarette to the interior space thereof that allows ambient air to enter the interior space.
  • the intermediate member has a translucency and diffusing property sufficient to prevent recognition of structures and shadows within to the electronic cigarette when the adaptor is illuminated from within the electronic cigarette.
  • an electronic cigarette including a first set of electrical contacts, an aerosol generating device and a rechargeable battery for powering the aerosol generating device, wherein the first set of electrical contacts is connectable to an electrode assembly that has a second set of electrical contacts, whereupon the electronic cigarette receives power via the electrode assembly for recharging the battery while being smoked by a smoker, and electrical circuitry connected to the first set of electrical contacts.
  • the electrical circuitry includes a first circuit for supplying battery power to the aerosol generating device and a second circuit for providing power from a battery charger to the battery for recharging thereof.
  • the first set of electrical contacts are disposed at an end of the electronic cigarette.
  • the first set of electrical contacts are disposed at a side portal of the electronic cigarette.
  • the electrical circuitry includes a pressure sensor, a transistor coupled to the battery and the first set of electrical contacts, a microprocessor, and electronic logic, wherein the microprocessor is responsive to the sensor and the electronic logic to regulate the transistor to enable and disable power flow to the battery via the first set of electrical contacts.
  • an electronic cigarette including an aerosol generating device, a battery for powering the aerosol generating device, and a tip adaptor disposed at an end of the electronic cigarette.
  • the tip adaptor has a sensor unit housed in an interior chamber thereof, and has a perforation extending from the interior chamber to an exterior of the electronic cigarette to place the interior chamber in fluid communication with ambient atmosphere.
  • the electrical circuitry is configured for selective operation in a first mode, wherein power flow to the battery is disabled when the aerosol generating device is activated by a user drawing on the electronic cigarette and is enabled when the aerosol generating device is not activated and in a second mode, wherein power flow to the battery is enabled when the aerosol generating device is activated by the user drawing on the electronic cigarette and when the aerosol generating device is not activated.
  • FIG. 1 is a semi-schematic exploded view of an electronic cigarette in accordance with an embodiment of the invention
  • FIG. 2 is an elevation of a tip charge adaptor, shown in slight perspective, in accordance with an embodiment of the invention
  • FIG. 3 is another perspective view of the adaptor shown in FIG. 2 in accordance with an embodiment of the invention.
  • FIG. 4 is a cutaway view of the adaptor shown in FIG. 2 shown in side elevation in accordance with an embodiment of the invention
  • FIG. 5 is a sectional view of the adaptor shown in FIG. 2 in accordance with an embodiment of the invention.
  • FIG. 6 is a cutaway view of the adaptor shown in FIG. 2 in accordance with an embodiment of the invention.
  • FIG. 7 is an elevation of a cradle for connection to a battery charging device in accordance with an embodiment of the invention.
  • FIG. 8 is an elevation of shows the cradle shown in FIG. 7 with an electrical contact subassembly in accordance with an embodiment of the invention
  • FIG. 9 is a side elevation of the cradle shown in FIG. 7 in accordance with an embodiment of the invention.
  • FIG. 10 is a top view of the cradle shown in FIG. 7 in accordance with an embodiment of the invention.
  • FIG. 11 is an elevation illustrating magnets of the cradle shown in FIG. 7 in accordance with an embodiment of the invention.
  • FIG. 12 is an exploded view of an adaptor shown in slight perspective in the smoking device of FIG. 1 in accordance with an alternate embodiment of the invention
  • FIG. 13 is a schematic diagram of electrical circuitry in an electronic cigarette adapted to a battery charger in accordance with an embodiment of the invention
  • FIG. 14 is a schematic diagram of electrical circuitry in an electronic cigarette adapted to a battery charger in accordance with an alternate embodiment of the invention.
  • FIG. 15 is a schematic diagram of electrical circuitry in an electronic cigarette adapted to a battery charger in accordance with an alternate embodiment of the invention.
  • FIG. 16 is a side elevation of a cradle for connection to a battery charging device in accordance with an alternate embodiment of the invention.
  • FIG. 17 is a top view of the cradle shown in FIG. 16 ;
  • FIG. 18 is a sectional view through the cradle shown in FIG. 16 ;
  • FIG. 19 is a partially cut-away view of an electronic cigarette charging system, which is constructed and operative in accordance with an alternate embodiment of the invention.
  • FIG. 20 , FIG. 21 and FIG. 22 are, respectively, an elevation and two cutaway views of a tip of an electronic cigarette that is constructed and operative to engage a battery charger in accordance with an alternate embodiment of the invention
  • FIG. 23 is a cut-away view of a portion of an electronic cigarette having a LED cap, in accordance with an alternate embodiment of the invention.
  • FIG. 24 is a partial sectional view of the electronic cigarette as shown in FIG. 23 ;
  • FIG. 25 is a block diagram of electrical circuitry for charging an electronic cigarette, in accordance with an embodiment of the invention.
  • link is intended to mean either an indirect or direct connection. Thus, if a first device couples to a second device, that connection may be through a direct connection, or through an indirect connection via other devices and connections.
  • FIG. 1 is a semi-schematic exploded view of a smoking device 10 in accordance with an embodiment of the invention.
  • Device 10 has a barrel comprising a battery section 12 .
  • the battery section 12 may include power control circuitry 14 , which is typically encased as a unit with a vacuum sensor 24 , and which may be enclosed in a plastic holder. Suitable power controls are disclosed in commonly assigned U.S. Provisional Application No. 61/441,133 (WO 2012/109371), which is herein incorporated by reference.
  • the device 10 includes a cartridge section 16 , including an aerosol generating device having a high resistance electrical wire, which heats a liquid or gel when the aerosol generating device is powered.
  • the liquid is typically a mixture of nicotine, propylene glycol, vegetable glycerine, and flavorings.
  • the components of the section 16 are integral, as taught in commonly assigned U.S. Provisional Application No. 61/474,569 (WO 2012/142293), which is herein incorporated by reference. In such case, the section 16 is known as a “cartomizer”.
  • the power control circuitry 14 may be disposed in the section 16 rather than the battery section 12 as shown in FIG. 1 .
  • the device 10 is capped by a tip 20 .
  • an internal aperture typically constricts the flow, thereby creating a pressure differential, which is sensed by a vacuum sensor 24 of known type.
  • the electronic power control circuitry 14 linked to the sensor 24 activates the aerosol generating device in the section 16 , which is powered, typically by a lithium ion battery 26 that is housed in a barrel 28 of the battery section 12 .
  • An adaptor 30 connects the section 16 and the battery section 12 , and may comprise a threaded connector. Details of a suitable adaptor 30 are disclosed in the above noted U.S. Provisional Application No. 61/474,569 (WO 2012/142293).
  • the power control circuitry may disable the aerosol generating device in the section 16 when the proportion of tobacco fumes exceeds a predefined threshold. Power output to aerosol generating device in section 16 may also be disabled when the battery 26 is being actively charged. Additionally or alternatively all functions of the power control circuitry 14 may be disabled when a battery charger (not shown in FIG. 1 ) is in operation, as described below.
  • FIG. 2 is an elevation of a tip charge adaptor 34 , shown in slight perspective, in accordance with an embodiment of the invention.
  • This assembly is compact, comprising a tip section 36 that replaces the tip 20 of the standard device 10 shown in FIG. 1 .
  • the adaptor 34 houses the sensor 24 ( FIG. 1 ).
  • a flange 38 is inset in the tip section 36 and provides a contact mechanism with a battery charging device (not shown).
  • the flange 38 is preferably coated with nickel or gold to minimize corrosion and enhance electrical conductivity with the battery charging device.
  • Side openings 40 receive contact pins, which provide a second contact mechanism with the same or a different battery charging device.
  • FIG. 3 is another perspective view of the adaptor 34 , illustrating recesses 42 .
  • Recesses 42 are side grooves that allow air flow to and from the region below the sensor 24 ( FIG. 1 ), e.g., the battery section 12 ( FIG. 1 ), as indicated by arrows 148 . They do not penetrate through the wall of the adaptor 34 .
  • FIG. 4 is a cutaway view of the adaptor 34 ( FIG. 2 ) shown in side elevation.
  • FIG. 5 is a sectional view of the adaptor 34 ( FIG. 2 ), showing air vents 44 , which penetrate the wall of the adaptor 34 , allowing air communication between the exterior and the interior of the adaptor 34 , as indicated by arrows 138 .
  • the air communication ensures that the top part of sensor 24 ( FIG. 1 ) is exposed to ambient pressure, which is necessary for its proper operation.
  • FIG. 6 is a cutaway view of the adaptor 34 ( FIG. 2 ) shown as a bottom elevation.
  • An orifice 46 receives the flange 38 ( FIG. 2 ).
  • the air vents 44 are visible on this view.
  • a rectangular groove 140 receives a diode, which is described below in the discussion of the electrical circuitry adapted to a battery charger.
  • FIG. 7 is an elevation of a cradle 48 , which is adapted to contain and connect to a battery charging device (not shown) and to receive the adaptor 34 in a concave receiving element 50 .
  • Stability is provided by support members 52 .
  • the concavity of the element 50 corresponds to a convexity of the adaptor 34 .
  • the matching curvatures facilitate a firm electromechanical mating between the cradle 48 and the adaptor 34 .
  • firm contact may be achieved by reversing the convexity and matching concavity such that the adaptor 34 presents a concave contacting surface and the cradle 48 has a convex receiving surface.
  • the element 50 and the adaptor 34 could have flat contacting surfaces.
  • FIG. 8 shows the cradle 48 with an electrical contact subassembly 54 , and exposes magnetic contact surfaces of magnets 64 , 66 .
  • FIG. 9 is a partially schematic side elevation of the cradle 48 , illustrating magnets 64 , 66 .
  • the magnet 66 is a cylinder having an exposed contact face as shown on FIG. 9 .
  • the magnet 64 is a toroid, which, as shown in FIG. 9 , similarly has an exposed contact face.
  • the aperture of the magnet 64 encloses the magnet 66 and the element 50 , such that the magnets 64 , 66 are spaced apart by the element 50 , as can be appreciated by reference to FIG. 7 together with FIG. 9 .
  • the magnets 64 , 66 form contact points with the battery charging device (not shown). In different embodiments, one of the magnets 64 , 66 may be omitted.
  • one magnet contact is sufficient to magnetically attract adaptor 34 .
  • Disk 68 and ring 142 are formed of a paramagnetic material so as to be held in firm contact with the magnets 64 , 66 .
  • Electrical leads 144 are soldered to tabs 146 , which project from the disk 68 and the ring 142 to create electrical contact between a battery charging device (not shown) and the magnets 64 , 66 .
  • Use of the disk 68 and the ring 142 and the tabs 146 in this manner avoids soldering the leads 144 to the permanent magnets directly, which would likely damage their magnetism.
  • tabs 146 could be eliminated and electrical leads 144 soldered or spot welded directly to disk 68 and the ring 142 .
  • FIG. 10 is a top view of the cradle 48 showing the configuration of the magnets 64 , 66 and their relationship to the element 50 .
  • FIG. 11 is an elevation in perspective illustrating the magnets 64 , 66 disengaged from the cradle 48 ( FIG. 2 ) with the disk 68 and the ring 142 attached.
  • disk 68 and the ring 142 may be placed above magnet 66 and magnet 64 , respectively, wherein the magnets provide attraction to adaptor 34 from below and via the paramagnetic material of disk 68 and ring 142 .
  • FIG. 12 is an exploded composite view of a tip charge adaptor 70 , shown in slight perspective, in accordance with an alternate embodiment of the invention.
  • the adaptor 70 may be press-fitted into the end of the device 10 ( FIG. 1 ).
  • a cap 72 on the adaptor 70 may be threaded.
  • the cap 72 has a flange 74 that forms a first electrical contact with a battery charging device (not shown).
  • a plastic insert 76 attaches to a lip 78 formed on the cap 72 and has an aperture 80 bored therethrough to accommodate a metallic coaxial contact 82 having a flat member 84 that may be inset in a corresponding depression 86 of the insert 76 .
  • the member 84 functions as a second electrical contact with the battery charging device (not shown).
  • the contact 82 has an extended member 88 that passes through the aperture 80 and attaches to a conductor leading toward a battery being charged.
  • the coaxial contact 82 may be realized in other configurations, e.g., a coaxial ring, and may have appears in profile as a domed or pointed tip contact.
  • the member 88 could have many configurations on cross section, for example, tubular, square or rectangular, and could be hollow or solid.
  • Several recesses 92 are formed externally along the circumference of the cap 72 for permitting air flow from outside and into the battery section 12 ( FIG. 1 ) during normal smoking operation.
  • the member 84 and the flange 74 are coated with nickel or gold to minimize corrosion and enhance electrical conductivity with the battery charging device.
  • Contacts on the battery charging device are typically also coated with nickel or gold, and configured to mate with the contacts of the adaptor 70 . Details of the battery charger are presented below.
  • the insert 76 is manufactured of a plastic having a translucency and diffusing property so that light from a light emitting diode (LED) (not shown) within the device diffuses at the tip, i.e., throughout the insert 76 , so as to prevent recognition of internal structures and shadows by an observer.
  • LED light emitting diode
  • This effect may be enhanced by including tiny crystals, e.g., glass crystals, within the plastic.
  • the wire (not shown) in the aerosol generating device would constitute a relatively low resistance load on the charger, and would defeat the charging function.
  • FIG. 13 is a schematic diagram of electrical circuitry in an electronic cigarette 94 adapted to a battery charger in accordance with an embodiment of the invention.
  • a battery charger electrode assembly 96 is provided with magnets 98 , which are attracted to external contacts 100 , 102 . As the contacts 100 , 102 incorporate a ferromagnetic material, they are urged into firm electrical contact with the magnets 98 by magnetic attraction. Positive and negative terminals 111 conduct the output of a conventional battery charger (not shown).
  • the circuit arrangement comprises a first circuit supplying the aerosol generating device of the cigarette 94 and a second charging circuit extending from the contacts 100 , 102 to the battery 104 .
  • a diode 108 is interposed in the second circuit between contact 100 and positive terminal 110 of battery 104 .
  • the diode 108 permits the battery 104 to be charged, but prevents outflow of electricity to external contacts 100 , 102 if the contacts 100 , 102 are inadvertently connected so as to cause a short circuit.
  • the positive terminal 110 is also connected to a contact 112 of a pressure sensor chip assembly 114 disposed at or near the tip of the cigarette 94 .
  • Another external contact, contact 102 is connected in common to ground point 116 of the sensor chip assembly 114 , to negative terminal 118 of the battery 104 , and to the connector 106 .
  • the connector 106 is typically a threaded connector joining the battery section with the aerosol generating device section of the cigarette 94 , as described above with reference to FIG. 1 .
  • a wire 120 connects the aerosol generating device with the sensor chip assembly 114 at a contact point 122 .
  • cigarette 94 is connected to a battery charger, e.g., a USB charger, via assembly 96 , if a user draws on the cigarette 94 , he causes the aerosol generating device to be actuated in normal smoking operation.
  • a battery charger e.g., a USB charger
  • power flow from the battery charger to the battery both charges the battery and powers the aerosol generating device if the battery is not sufficiently charged.
  • the assembly 96 comprises the magnets 98 , which are held by magnetic attraction against ferromagnetic disks 124 , to which are bonded (e.g., soldered) wire leads 126 originating from the battery charger (not shown). This construction avoids the difficult operation of soldering the wire leads 126 directly onto the magnets 98 , which would likely impair the magnets 98 .
  • FIG. 14 is a schematic diagram of electrical circuitry in an electronic cigarette 130 adapted to a battery charger in accordance with an alternate embodiment of the invention.
  • the battery charger assembly 96 is now connected to a side port 128 of an electronic cigarette 130 having external contacts 132 , 134 , which connect in a circuit including the diode 108 and the positive terminal 110 of the battery 104 within battery compartment 105 , as in the previous embodiment.
  • the sensor chip assembly 114 When the sensor chip assembly 114 is actuated as the user smokes, it actuates a switch, shown representatively as relay 136 , thereby breaking the charger circuit so that the charger is no longer operative.
  • the sensor chip assembly 114 is typically disposed within or near cigarette tip 115 .
  • the battery 104 then feeds power to aerosol generating device 137 .
  • the aerosol generating device 137 and the battery compartment 105 may be joined by a threaded connector 139 . Once the user is no longer inhaling, the sensor chip assembly 114 operates the relay 136 to again make the circuit and enable charging to continue.
  • FIG. 25 is a block diagram of electrical circuitry for charging an electronic cigarette, in accordance with an alternate embodiment of the invention.
  • charging control circuitry 223 for charging control and control switch 225 for smoking control.
  • a battery charger 221 can be connected to and disconnected from charging control circuitry 223 .
  • the charging control circuitry 223 is linked to the control switch 225 , a rechargeable battery 227 , and a sensor unit having control circuitry 229 .
  • the control switch 225 enables and disables the charging control circuitry 223 from charging the battery 227 as commanded by control signals from the circuitry 229 .
  • the circuitry 229 is actuated to disable the charging control circuitry 223 when a pressure sensor (not shown) detects a pressure difference from the ambient atmosphere, indicating that the user of the electronic cigarette is inhaling.
  • a pressure sensor not shown
  • the control switch 225 is commanded to enable the charging control circuitry 223 , allowing the battery 227 to continue charging.
  • control switch 225 when the control switch 225 detects that the battery charger 221 is connected to the system, it automatically connects the circuitry 229 (sensor and aerosol generating device coil control) to operate directly from the battery charger 221 .
  • the battery charger 221 performs two functions, according to the state of the control switch 225 : (1) Charging the battery; and (2) supplying power to the cigarette for smoking.
  • the only limitation is that the battery charger 221 has sufficient output capacity to support charging and smoking at the same time.
  • the electrical circuitry may selectively operate in either a first mode, wherein power flow to the battery is disabled when the aerosol generating device is activated by a user drawing on the electronic cigarette and is enabled when the aerosol generating device is not activated or may operate in a second mode, wherein power flow to the battery is enabled when the aerosol generating device is activated by the user drawing on the electronic cigarette and when the aerosol generating device is not activated.
  • a first mode battery charging is disabled while a puff is being taken on the electronic cigarette.
  • the second mode battery charging continues concurrently with puffing on the electronic cigarette.
  • FIG. 15 is a detailed schematic diagram of electrical circuitry 149 of an electronic cigarette adapted to a battery charger 150 in accordance with an alternate embodiment of the invention.
  • the circuitry 149 allows concurrent smoking and charging.
  • the circuitry shown in FIG. 14 will only charge the battery—between puffs, i.e., when the aerosol generating device is not actuated.
  • Scenario A The charger 150 is not connected.
  • Microcontroller 159 and application-specific integrated circuit (ASIC 161 ) are constantly connected to battery cell 163 in cigarette 165 .
  • the output 4-GP2 of microcontroller 159 is set to “0”, and transistor Q 1 169 is “open”, meaning that output OUT 1 on the ASIC 161 is connected to output connector J 3 .
  • Output 1-GPO of microcontroller 159 exactly duplicates the signal from sensor S 167 (When sensor S 167 is disconnected, 1-GPO shows a logical “1”; and when sensor S 167 is connected, 1-GPO of microcontroller 159 shows a logical “0”).
  • the sensor S 167 may be realized as an analog circuit, with appropriate modification of the microcontroller 159 to accommodate an analog device, for example, by including an analog-to-digital converter as is known in the art.
  • the cigarette 165 works the same as usual, and the circuitry 149 does not affect the operation of the cigarette 165 , since the input 6-GP3 of microcontroller 159 shows a logical “0”, which indicates that the charger 150 is not connected.
  • Scenario B The charger 150 is connected.
  • a logical “1” is produced constantly at the output 1-GPO of the microcontroller 159 , meaning that the ASIC 161 no longer controls sensor S 167 .
  • the transistor Q 1 169 is also closed in this state, meaning that there is no electrical connection between OUT 1 of the ASIC 161 and the output connector J 3 .
  • the voltage from the charger 150 is being directed via connectors J 1 , J 2 to the input OUT 1 of ASIC 161 and goes out through output OUT 2 of ASIC 161 , to the cell 163 , resulting in the charging of the cell 163 .
  • the signal from the sensor S 167 arrives at the input 3-GP1 of the microcontroller 159 , which then does the following:
  • Transistor Q 1 169 opens, and the power travels from the charger 150 through the transistor Q 1 169 and goes to the heating element of the cartridge (not shown) in the cigarette 165 , and at the same time the power charges the cell 163 (if it is not fully charged).
  • LED's are included with the ASIC 161 or separate from the ASIC 161 and controlled by the microcontroller 159 in either case. These LED's inform the user of the status of the ASIC 161 and simulate smoking activity.
  • circuitry 149 In another embodiment of the circuit all the functionality of the circuitry 149 may be incorporated into the ASIC.
  • FIG. 16 is a side elevation of a cradle 154 for connection to a battery charging device in accordance with an embodiment of the invention.
  • This version features a circular ring 152 that engages the tip of a cigarette, holding it in contact with the cradle 154 .
  • the ring 152 should be made of a rubbery material such as silicone, in order to facilitate holding a cigarette tip inside the cradle 154 by friction.
  • Notches 156 retain magnet 64 .
  • FIG. 17 is a top view of the cradle 154 , showing the ring 152 , and the magnets 64 , 66 in place.
  • FIG. 18 is a sectional view through the cradle 154 , illustrating the magnet 64 being held in place by the notches 156 .
  • FIG. 19 is a partially cut-away view of an electronic cigarette charging system 171 , which is constructed and operative in accordance with an alternate embodiment of the invention.
  • This embodiment like the embodiment shown in FIG. 14 , uses a side-port on the electronic cigarette to connect to a cradle 175 housing battery charging circuitry 177 .
  • Use of the system 171 avoids any need for disassembly of an electronic cigarette 173 . Indeed, the electronic cigarette 173 may be temporarily removed during charging, puffing resumed, and the electronic cigarette then replaced in the cradle 175 to continue charging the battery of the electronic cigarette.
  • a universal serial bus (USB) adaptor 179 connects a source of power (not shown), e.g., a laptop computer to the circuitry 177 via a cable 185 .
  • a source of power not shown
  • electrical contacts 181 on the cradle 175 mate with side port electrical contacts 183 , which may be magnetic, or spring-loaded, and which are disposed along the barrel of the electronic cigarette 173 , as best seen in FIG. 14
  • the side-charging configuration can also allow for puffing while the cigarette is inside the cradle 175 .
  • the circuitry shown in FIG. 15 may be used.
  • FIG. 20 , FIG. 21 and FIG. 22 are, respectively, an elevation and two cutaway views of a tip of an electronic cigarette that is constructed and operative to engage a battery charger in accordance with an alternate embodiment of the invention.
  • An outer metallic ring or band 189 functions as one electrical contact with the battery charger.
  • the band 189 is typically, but not necessarily, the positive contact. As seen in FIG. 22 , it extends proximally, and is exposed to the interior of body 195 of the electronic cigarette at a point 203 .
  • a centrally located metallic plug 191 functions as the other electrical contact, typically the negative pole.
  • the band 189 and the plug 191 may be magnetic, or constructed of a paramagnetic material. Wires (not shown), lead from the band 189 and the plug 191 to a battery within the body of the cigarette as discussed above, or to regulatory circuitry, e.g., circuitry 149 ( FIG. 15 ).
  • a member 193 appears on FIG. 20 as a ring separating the band 189 from the plug 191 .
  • the member 193 has a first function: it acts as an electrical insulator between the two contacts, band 189 and plug 191 . It is formed of an electrically non-conductive material.
  • the member 193 has a second function: placing the interior of the body 195 into fluid communication with ambient air as seen in FIG. 21 , so as to facilitate operation of a pressure sensor, e.g., sensor 24 ( FIG. 1 ).
  • the member 193 achieves this using a groove or channel 197 formed therein, which emerges onto the exterior of the tip at a point 199 and debouches into the interior of the body 195 at point 201 .
  • the member 193 has a third function: simulating the glow of a conventional cigarette tip.
  • the member 193 is typically composed of a plastic having an opacity and diffusing property so that light from a LED (not shown) within the body 195 diffuses when it passes through the member 193 , so as to mask internal structures and internal shadows produced by the LED, such that their features cannot be perceived by an observer. This effect may be enhanced by including tiny crystals, e.g., glass crystals, within the plastic.
  • FIG. 23 is a cut-away view of a portion of a barrel 215 of an electronic cigarette 211 having a LED cap 207 , in accordance with an alternate embodiment of the invention.
  • This embodiment is a modification of the tip adaptor 34 shown in FIGS. 2 , 3 and 4 , which accommodates a sensor in an internal chamber, and may include integrated circuitry.
  • the LED cap 207 is mostly inset into the end of the barrel 215 , and lacks the electrical contact mechanisms of the adaptor 34 for tip-charging the electronic cigarette.
  • the LED cap 207 may be constructed of a plastic material as described for the member 193 ( FIG. 20 ).
  • a sensor unit 209 occupies the interior of the LED cap 207 , and is an embodiment of the sensor 24 ( FIG. 1 ), but instead of being inside a plastic housing of its own, the sensor unit 209 is now disposed inside the LED cap 207 in order to save space. Electrical circuitry associated with or incorporated in the sensor unit 209 may enable the aerosol generating device and perform various additional functions as may be required for the operation of the electronic cigarette 211 .
  • the LED cap 207 has a perforation 213 for communication between the sensor unit 209 and the ambient atmosphere.
  • a battery 217 powers the electronic cigarette 211 as described above.
  • FIG. 24 is a sectional view of the electronic cigarette 211 shown in FIG. 23 , illustrating structural details of the sensor unit 209 and its relationship with the LED cap 207 and perforation 213 .

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  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
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US14/366,560 US20150020831A1 (en) 2011-12-18 2012-12-09 Charging electronic cigarette
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AU2012356194A1 (en) 2014-07-17
EP3369328A2 (en) 2018-09-05
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UA114903C2 (uk) 2017-08-28
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BR112014014927A2 (pt) 2017-06-13
RU2620751C2 (ru) 2017-05-29
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IL233196B (en) 2018-08-30
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WO2013093695A1 (en) 2013-06-27
CA2859610A1 (en) 2013-06-27

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