Electrically heated aerosol generating system and method

Patent metadata

Field	Value
Publication number	US-2019380392-A1
Application number	US-201916552394-A
Country	US
Kind code	A1
Filing date	Aug 27, 2019
Priority date	Mar 14, 2008
Publication date	Dec 19, 2019
Grant date	—

Abstract

An electrically heated aerosol generating system for receiving an aerosol-forming substrate includes at least one heating element for heating the substrate to form the aerosol and a power supply for supplying power to the at least one heating element. The power supply includes a voltage source, two or more supercapacitors, and switches between the voltage source and the two or more supercapacitors. The switches are arranged so that, during a charging mode, the supercapacitors are connected so as to be charged by the voltage source and, during a heating mode, the supercapacitors are connected so as to discharge through the at least one heating element.

First claim

1 - 10 . (canceled)

11 . An electrically heated vapor generating system comprising:
a connector configured to be detachably connected to an external charging portion; at least one heating element; and a power supply configured to supply power to the at least one heating element, the power supply including,
at least a first group of supercapacitors and a second group of supercapacitors, and
power supply switches operably connected to the first group of supercapacitors and the second group of supercapacitors, the power supply switches being arranged by having the first and second groups of supercapacitors connected in series and discharged through the at least one heating element during a heating mode and the first and second groups of supercapacitors connected in parallel and charged during a charging mode by the external charging portion,
a first power supply switch of the power supply switches is connected between the heating element and a first connection point of the connector, and a second power supply switch of the power supply switches having a first end and a second end connected to the connector, the first end, the second end, or both the first end and the second end being connected to a second connection point, the first and second groups of supercapacitors being connected between the connector, and the heating element is connected between the first power supply switch and the connector.

12 . The electrically heated vapor generating system according to claim 11 , wherein during the charging mode:
the connector is mated to the external charging portion by having connection points of the connector connected to corresponding points on the external charging portion and the first and second groups of supercapacitors connected in parallel with a voltage source of the external charging portion.

13 . The electrically heated vapor generating system according to claim 11 , further comprising:
a controller configured to open the first power supply switch and the second power supply switch during the charging mode.

14 . The electrically heated vapor generating system of claim 13 , wherein the controller is configured to close the first power supply switch and the second power supply switch during the heating mode.

15 . The electrically heated vapor generating system of claim 14 , wherein the controller is configured to open and close the second power supply switch in accordance with a power supply protocol.

16 . The electrically heated vapor generating system of claim 11 , wherein the first group of supercapacitors includes a first number of supercapacitors connected in series.

17 . The electrically heated vapor generating system of claim 16 , wherein the second group of supercapacitors includes a second number of supercapacitors connected in series.

18 . The electrically heated vapor generating system of claim 11 , further comprising:
a sensor configured to detect air flow; and a controller configured to operate the first power supply switch and the second power supply switch based on the detected air flow.

19 . The electrically heated vapor generating system of claim 18 , wherein the controller is configured to open the first power supply switch and the second power supply switch when the detected air flow is above a threshold.

20 . The electrically heated vapor generating system of claim 11 , wherein the controller is configured to close the first power supply switch and the second power supply switch when the detected air flow is below the threshold.

21 . The electrically heated vapor generating system of claim 11 , wherein the first and second groups of supercapacitors are nanoporous supercapacitors.

22 . The electrically heated vapor generating system of claim 11 , wherein the at least one heating element includes a resistive material.

Assignees

• Philip Morris Usa Inc

Inventors

• Fernando Felix
• Pourrat Franck
• Cordey Jean-Pierre

Classifications

• H02J7/82

  Control of state of charge [SOC] · CPC title

• H02J7/575

  Parallel/serial switching of connection of batteries to charge or load circuit · CPC title

• H02J7/92

  with prioritisation of loads or sources · CPC title

• H02J7/345

  using capacitors as storage or buffering devices · CPC title

• H05B3/20

  Heating elements having extended surface area substantially in a two-dimensional [2D] plane, e.g. plate-heater (H05B3/62, H05B3/68, H05B3/78, H05B3/84 take precedence) · CPC title