Philip Morris USA Inc.

Philip Morris Products S.a.

Marc-Robert Chemla

Felix Fernando

Fredrik Stahle

An electrically heated smoking system includes a secondary unit capable of receiving a smoking article having an aerosol-forming substrate. The secondary unit includes at least one heating element and an interface for connection to a primary power supply for supplying electrical power to the at least one heating element during a pre-heating mode, to increase the temperature of the aerosol-forming substrate to an operating temperature. The secondary unit further includes a secondary power supply arranged to supply electrical power to the at least one heating element during a smoking mode, to maintain the temperature of the aerosol-forming substrate at substantially the operating temperature. The secondary unit also includes secondary circuitry. The electrically heated smoking system optionally includes a primary unit.

Electrically heated smoking system

An electrically heated smoking system is provided, including a secondary unit configured to receive a smoking article having an aerosol-forming substrate. The secondary unit includes at least one heating element, an interface configured to connect to a primary power supply, a secondary power supply, and secondary circuitry. The secondary circuitry is configured to control supply of electrical power from the secondary supply to the heating element (a) in a pre-heating mode, during which a substrate temperature is increased to an operating temperature, and (b) in a smoking mode, during which a substrate temperature is maintained at substantially the operating temperature; and to control charging of the secondary supply by the primary supply in a charging mode, to have sufficient charge to increase a substrate temperature to the operating temperature in the pre-heating mode and to maintain the substrate temperature at substantially the operating temperature during the smoking mode.

An electrically heated smoking system is provided, including a secondary unit capable of receiving a smoking article having an aerosol-forming substrate. The secondary unit includes at least one heating element and an interface for connection to a primary power supply, and further includes a secondary power supply and secondary circuitry. The secondary circuitry is arranged to control supply of electrical power from the secondary power supply to the at least one heating element: (a) in a pre-heating mode during which the substrate temperature is increased to an operating temperature; (b) in a smoking mode, during which the substrate temperature is maintained at substantially the operating temperature; and (c) in a charging mode, so that the secondary power supply has sufficient charge to increase the substrate temperature to the operating temperature in the pre-heating mode and to maintain the substrate temperature at substantially the operating temperature during the smoking mode.

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Aubonne, Switzerland

Marc-Robert Chemla