Patent ID: 11901752
Assignee: JAPAN TOBACCO INC.
Field: Other consumer goods (Other fields)
Classification: CPC H  A | IPC A  H

Claim 0:
1. A power supply unit for an aerosol generation device, the power supply unit comprising:
an internal power supply configured to hold power supplied to a heater configured to heat an aerosol source;
a connector connectable to an external power supply;
a controller configured to control power supply from the internal power supply to the heater;
a first transistor of a dropper type positioned on a first power supply path between the connector and a positive electrode of the internal power supply;
a circuit board mounted with the controller and including ground; and
a current detection circuit configured to detect at least one of a first current flowing from a negative electrode of the internal power supply at the time of charging the internal power supply and a second current flowing into the negative electrode of the internal power supply at the time of discharging from the internal power supply,
wherein a current from the connector is supplied to a source of the first transistor, and a current from a drain of the first transistor is supplied to the positive electrode of the internal power supply,
the controller performs feedback control on a voltage of a gate of the first transistor based on a current or a voltage supplied from the first transistor, thereby adjusting power supplied from the external power supply to the internal power supply, and
wherein the negative electrode of the internal power supply is not connected to the ground of the power supply unit.