# US 12,009,685 B2 · Power supply unit for aerosol generation device

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- Number: US 12,009,685 B2
- Document ID: US12009685B2
- Status: Granted
- Kind: B2
- Application number: 17/972,630
- Filed: 2022-10-25
- Published: 2023-02-09
- Granted: 2024-06-11
- Earliest claimed: 2020-07-09
- Assignees: Japan Tobacco Inc.
- Applicants: Japan Tobacco Inc.
- Inventors: Yasuhiro Ono; Minoru Kitahara; Shujiro Tanaka
- Web page: https://patentgrep.com/patent/US12009685B2

## CPC

- A24F 40/30: Devices using two or more structurally separated inhalable precursors, e.g. using two liquid precursors in two cartridges
- H02J 7/855: {with circuits adapted for supplying loads from the battery}
- A24F 40/10: Devices using liquid inhalable precursors
- A24F 40/50: Control or monitoring
- A24F 40/95: structurally associated with cases
- H02J 7/90: Regulation of charging or discharging current or voltage
- A24F 40/60: Devices with integrated user interfaces
- H02J 2105/44: Portable electronic devices
- H02J 2207/20: Charging or discharging characterised by the power electronics converter
- A24F: SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES (inhaling appliances for medical purposes, shaped like cigars, cigarettes or pipes A61M15/06)
- H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY

## Abstract

A power supply unit for an aerosol generation device includes: a power supply configured to supply power to a heater configured to heat an aerosol source; a step-up system configured to function by a stepped-up voltage supplied from the power supply; a step-down system configured to function by a stepped-down voltage supplied from the power supply; and a direct-coupling system configured to function by a voltage supplied from the power supply.

## Claims

### Claim 1

A power supply unit for an aerosol generation device, the power supply unit comprising:
a secondary battery configured to supply power to a heater configured to heat an aerosol source;
a step-up system configured to function by a stepped-up voltage supplied from the secondary battery;
a step-down system configured to function by a stepped-down voltage supplied from the secondary battery; and
a direct-coupling system configured to function by a voltage supplied from the secondary battery.

### Claim 2 (depends on 1)

The power supply unit for the aerosol generation device according to claim 1, wherein a frequency at which the step-up system functions is lower than at least one of a frequency at which the step-down system functions and a frequency at which the direct-coupling system functions.

### Claim 3 (depends on 1)

The power supply unit for the aerosol generation device according to claim 1,
wherein the step-down system functions in at least a part of a period during which the step-up system does not function and a period during which the step-up system functions, and
wherein the step-down system functions in at least a part of a period during which the direct-coupling system does not function and a period during which the direct-coupling system functions.

### Claim 4 (depends on 1)

The power supply unit for the aerosol generation device according to claim 1, wherein the number of loads that function in the step-down system is larger than at least one of the number of loads that function in the step-up system and the number of loads that function in the direct-coupling system.

### Claim 5 (depends on 4)

The power supply unit for the aerosol generation device according to claim 4, wherein the number of loads that function in the step-up system is 1.

### Claim 6 (depends on 4)

The power supply unit for the aerosol generation device according to claim 4, further comprising:
a plurality of the step-up systems,
wherein the number of loads that function in each of the step-up systems is 1.

### Claim 7 (depends on 6)

The power supply unit for the aerosol generation device according to claim 6, wherein the plurality of step-up systems do not function at the same time.

### Claim 8 (depends on 1)

The power supply unit for the aerosol generation device according to claim 1, further comprising:
a first user interface configured to function in the step-up system;
a second user interface that is configured to function in the step-down system and separate from the first user interface; and
a third user interface that is configured to function in the direct-coupling system and separate from the first user interface and the second user interface.

### Claim 9 (depends on 8)

The power supply unit for the aerosol generation device according to claim 8, wherein a frequency at which the third user interface functions is higher than a frequency at which the first user interface functions and a frequency at which the second user interface functions.

### Claim 10 (depends on 9)

The power supply unit for the aerosol generation device according to claim 9, wherein power consumed by the third user interface while functioning is smaller than power consumed by the first user interface while functioning and power consumed by the second user interface while functioning.