IP Library › Granted Patent US 11,271,481
Granted Patent B2
US 11,271,481 · App. 16/592,253 · Granted Mar 8, 2022

Inhalation component generating device, control circuit, and control method and control program of inhalation component generating device

Inventors: Kazuma Mizuguchi (Tokyo, JP); Takeshi Akao (Tokyo, JP); Hajime Fujita (Tokyo, JP)
Assignee: JAPAN TOBACCO INC.
H02M3/158A24F40/50
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Quick Facts
Patent No.
US 11,271,481
App. No.
16/592,253
Granted
Mar 8, 2022
Kind
B2
Abstract

An inhalation component generating device includes: a power supply; a load group including a load configured to evaporate or atomize an inhalation component source by power from the power supply; an adjusting unit configured to adjust a value or waveform of voltage to be applied to the load; and a control circuit configured to be able to acquire a voltage value of the power supply. The control circuit performs: a process (a1) of acquiring a closed circuit voltage value of the power supply in a closed circuit state in which the power supply and the load group are electrically connected; and a process (a2) of controlling the adjusting unit based on the closed circuit voltage value.

Claims (61)

1. An inhalation component generating device comprising:

a power supply;

a load group including a load configured to evaporate or atomize an inhalation component source by power from the power supply, wherein the load is a heating element;

an adjusting circuit configured to adjust a value or waveform of voltage to be applied to the load; and

a control circuit configured to be able to acquire a voltage value of the power supply,

wherein the control circuit is configured to:

acquire a generation request related to generation of an inhalation component,

perform an operation of supplying power to the load on the basis of the generation request,

after acquiring the generation request, perform a process (a1) of acquiring a closed circuit voltage value of the power supply in a closed circuit state in which the power supply and the load group are electrically connected, the acquired closed voltage value corresponding to the acquired generation request, and

after completing the process (a1), perform a process (a2) of controlling the adjusting circuit based on only the closed circuit voltage value acquired in the process (a1), out of an open circuit voltage value and the closed circuit voltage value, and

wherein the process (a1) and the process (a2) are performed within a same inhalation and performed before the operation of supplying power to the load.

2. The inhalation component generating device according to claim 1 , wherein in the process (a1), after the power supply and the load group form the closed circuit state, if a relaxation time required for the closed circuit voltage value to become a stationary state passes, the control circuit acquires the closed circuit voltage value.

3. The inhalation component generating device according to claim 1 , wherein in the process (a1), the control circuit acquires a plurality of voltage values of the power supply for a predetermined detection time, and acquires the closed circuit voltage value based on the plurality of acquired voltage values of the power supply detected in a closed circuit state configured such that the closed circuit voltage value is acquired based on a plurality of acquired voltage values.

4. The inhalation component generating device according to claim 3 , wherein the predetermined detection time is longer than a relaxation time required for the closed circuit voltage value to become a stationary state.

5. The inhalation component generating device according to claim 3 , wherein the predetermined detection time is such a time that even when the load is driven in the closed circuit state, any inhalation component is not generated.

6. The inhalation component generating device according to claim 1 , wherein

prior to the process (a1), the control circuit is configured to acquire the open circuit voltage value of the power supply in an open circuit state in which the power supply and the load group are not electrically connected, and

in response to the open circuit voltage value being equal to or smaller than a discharge cutoff voltage of the power supply, the control circuit is configured to not perform the process (a1) and the process (a2).

7. The inhalation component generating device according to claim 1 , wherein in the process (a2), the control circuit is configured to adjust at least one of a pulse width, duty ratio, average value, effective value, voltage value, an application time of the voltage to be applied to the load, and a maximum value of the application time, based on the closed circuit voltage value.

8. The inhalation component generating device according to claim 7 , wherein in the process (a2), the control circuit increases the maximum value of the application time based on the closed circuit voltage value.

9. The inhalation component generating device according to claim 7 , wherein

the control circuit is configured to set the maximum value of the application time such that an amount of power which is supplied to the load according to the generation request in a case where the closed circuit voltage value is a first value becomes the same as, or substantially the same as an amount of power which is supplied to the load according to the generation request in a case where the closed circuit voltage value is a second value different from the first value.

10. The inhalation component generating device according to claim 8 , wherein

based on a shorter time of the maximum value of the application time and a time when the generation request has been consecutively acquired, the control circuit is configured to adjust the application time of the voltage to be applied to the load.

11. The inhalation component generating device according to claim 7 , wherein

in the process (a1), the control circuit is configured to increase the application time based on the closed circuit voltage value.

12. The inhalation component generating device according to claim 7 ,

when setting the application time, the control circuit is configured to set the application time such that an amount of power which is supplied to the load according to the generation request in a case where the closed circuit voltage value is a first value becomes the same as, or substantially the same as an amount of power which is supplied to the load according to the generation request in a case where the closed circuit voltage value is a second value different from the first value.

13. The inhalation component generating device according to claim 7 , wherein:

a curve of power supply voltage values versus hours of use of the inhalation component generating device includes an initial section, a plateau section and a final section,

the plateau section has a variation of an amount of charge of the power supply less than in the initial section and in the final section, and

the control circuit is configured to adjust the maximum value of the application time or the application time only when the closed circuit voltage value is smaller than voltage values belonging to the plateau section.

14. The inhalation component generating device according to claim 1 , wherein:

the control circuit is configured to:

control the power supply based on a sensor that outputs the generation request of the inhalation component; and

perform the process (a2) before detection of a next generation request.

15. The inhalation component generating device according to claim 1 , further comprising:

a battery assembly configured by storing a battery which is the power supply, in a case; and

a cartridge that is attached to the battery assembly so as to be exchangeable.

16. A control circuit for controlling at least a part of functions of an inhalation component generating device including a power supply, a load group including a load configured to evaporate or atomize an inhalation component source by power from the power supply, wherein the load is a heating element, and an adjusting circuit configured to adjust a value or waveform of voltage to be applied to the load, the control circuit being configured to:

acquire a generation request related to generation of an inhalation component;

perform an operation of supplying power to the load on the basis of the generation request;

after acquiring the generation request, perform a process (a1) of acquiring a closed circuit voltage value of the power supply in a closed circuit state in which the power supply and the load group are electrically connected, the acquired closed circuit voltage value corresponding to the acquired generation request; and then

perform a process (a2) of controlling the adjusting circuit based on only the closed circuit voltage value acquired in the process (a1), out of an open circuit voltage value and the closed circuit voltage value, and

wherein the process (a1) and the process (a2) are performed within a same inhalation and performed before the operation of supplying power to the load.

17. An inhalation component generating device comprising:

a power supply;

a load group including a load configured to evaporate or atomize an inhalation component source by power from the power supply, wherein the load is a heating element;

an adjusting circuit configured to adjust a plurality of variables constituting a waveform of voltage to be applied to the load; and

a control circuit configured to be able to acquire a voltage value of the power supply,

wherein a curve of power supply voltage values versus hours of use of the inhalation component generating device includes an initial section, a plateau section and a final section,

wherein the plateau section has a variation of an amount of charge of the power supply less than in the initial section and in the final section, and

wherein the control circuit is configured to:

acquire a generation request related to generation of an inhalation component;

perform an operation of supplying power to the load on the basis of the generation request;

after acquiring the generation request, perform a process (a1) of acquiring only a closed circuit voltage value out of an open circuit voltage value and the closed circuit voltage value of the power supply in a closed circuit state in which the power supply and the load group are electrically connected;

after completing the process (a1), perform a process (a2) of adjusting a first variable which is one of the plurality of variables, in a case where the closed circuit voltage value is smaller than voltage values belonging to the plateau section, the first variable being the voltage applied to the load; and

after completing the process (a2), perform a process (a3) of adjusting a second variable which is one of the plurality of variables and is different from the first variable, in a case where the closed circuit voltage value is equal to or larger than the voltage values belonging to the plateau section, the second variable being the waveform of the voltage applied to the load, and

wherein the process (a1), the process (a2) and the process (a3) are performed with the same inhalation and are performed before the operation of supplying power to the load.

18. The inhalation component generating device according to claim 17 , wherein:

the control circuit is configured to adjust a maximum value of the application time or the application time only when the closed circuit voltage value is smaller than the voltage values belonging to the plateau section.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 3, 2019
From: MIZUGUCHI, KAZUMA; AKAO, TAKESHI; FUJITA, HAJIME
To: JAPAN TOBACCO INC.
Reel/Frame 050621/0472 →
Priority Claims (1)
JP JP2018-189529 · Oct 4, 2018 · national
Continuity (1)
Related Publication 20200107582A1 · Apr 9, 2020
Cited By (1)
US 12,520,880