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US 12,302,459 B2Granted
Methods and apparatus for a power supply control circuit
AssigneeJapan Tobacco Inc.
InventorHideo Kondo
Life of this patent
Estimating the term…
Abstract
Various embodiments of the present technology comprise a method and apparatus for a power supply control circuit. In various embodiments, the apparatus is adapted to control the power supplied by a battery to a heating element. The apparatus may comprise a memory for storing known data and circuitry configured to control the delivery of power from the battery to the heating element according to measured parameters, calculated parameters, and the known data.
Claims19
An apparatus adapted to power a heating element, comprising:
- a battery;
- a control circuit connected to the battery and configured to:
- store known battery data comprising a first profile and a second profile;
- determine a capacity of the battery according to the first profile;
- determine a resistance of the battery according to the second profile;
- calculate a first power value based on the determined resistance;
- generate a control signal according to the calculated first power value;
- and
- selectively connect the battery to the heating element according to the control signal.
6 more elements
An apparatus adapted to power a heating element with a battery, comprising:
- a control circuit configured to:
- measure an actual voltage of the battery;
- determine a capacity of the battery according to the measured actual voltage and a first battery profile;
- determine a resistance of the battery according to the determined capacity and a second battery profile;
- calculate a first power using the measured actual voltage, the determined resistance of the battery, and a resistance of the heating element;
- calculate a ratio of a predetermined target power and the calculated first power;
- and
- electrically connect the battery to the heating element according to the calculated ratio.
5 more elements
A system, comprising:
- a battery configured to power to a heating element;
- a memory configured to store known battery data comprising a first profile and a second profile;
- and
- a control circuit configured to:
- determine an actual capacity of the battery according to a measured actual voltage of the battery and the first profile;
- determine a resistance of the battery according to the second profile;
- compute a first power using the measured actual voltage, the determined resistance of the battery, and a resistance of the heating element;
- generate a control signal based on the computed first power and a predetermined target power;
- and
- selectively connect the battery to the heating element according to the control signal.
7 more elements
Dependencies are inferred from the claim text.