# US 10,483,781 B2 · Electrically heated aerosol-generating system

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- Number: US 10,483,781 B2
- Document ID: US10483781B2
- Status: Granted
- Kind: B2
- Application number: 16/375,268
- Filed: 2019-04-04
- Published: 2019-08-15
- Granted: 2019-11-19
- Earliest claimed: 2014-04-30
- Assignees: Philip Morris Products S.A.
- Applicants: Philip Morris Products S.A.
- Inventors: Raphael Holzherr
- Web page: https://patentgrep.com/patent/US10483781B2

## CPC

- A24F 40/53: Monitoring, e.g. fault detection
- A24F 40/90: Arrangements or methods specially adapted for charging batteries thereof
- H02J 7/00: Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
- H02J 7/445: {in response to measured battery parameters, e.g. voltage, current or temperature profile}
- H05B 1/0244: {Heating of fluids (H05B1/0247 takes precedence)}
- A24F 40/20: Devices using solid inhalable precursors
- H02J 7/44: between battery management systems and power sources
- H02J 7/975: {in response to temperature}
- H05B 2203/021: Heaters specially adapted for heating liquids
- Y02E 60/10: Energy storage using batteries
- 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
- H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

A method of controlling an electrical system is provided, the electrical system including a primary charging device including a first rechargeable power supply, and a portable device including a second rechargeable power supply, the method including monitoring an ambient temperature adjacent the primary charging device, determining a charging current for charging the first rechargeable power supply of the primary charging device, in dependence on the ambient temperature, and charging the first rechargeable power supply of the primary charging device at the determined charging current. There is also provided a system and device for performing the method.

## Claims

### Claim 1

A method of controlling an electrical system, the electrical system comprising a primary charging device comprising a first rechargeable power supply, and a portable device comprising a second rechargeable power supply, the method comprising:
monitoring an ambient temperature adjacent the primary charging device;
determining a charging current, for charging the first rechargeable power supply of the primary charging device, in dependence on the ambient temperature; and
charging the first rechargeable power supply of the primary charging device at the determined charging current,
wherein:
when the ambient temperature is within a first predetermined temperature range, the charging current is less than about 0.1 C,
when the ambient temperature is within a second predetermined temperature range, the charging current is greater than about 0.1 C, and
when the ambient temperature is above a predetermined temperature, preventing the charging of the first rechargeable power supply.

### Claim 2 (depends on 1)

The method according to claim 1, further comprising, when the first rechargeable power supply of the primary charging device is being charged, indicating to a user what charging current is being provided to the first rechargeable power supply.

### Claim 3 (depends on 1)

The method according to claim 1, further comprising:
determining a discharging current for the first rechargeable power supply of the primary charging device, for charging the second rechargeable power supply of the portable device; and
charging the second rechargeable power supply of the portable device at the determined discharging current,
wherein:
when the ambient temperature is within a third predetermined temperature range, the discharging current is between about 0.1 C and about 0.3 C;
when the ambient temperature is within a fourth predetermined temperature range, the discharging current is between about 0.8 C and about 1.2 C; and
when the ambient temperature is above a pre-determined temperature, preventing the discharging of the first rechargeable power supply.

### Claim 4 (depends on 3)

The method according to claim 3, further comprising, when the first rechargeable power supply of the primary charging device is being discharged, indicating to a user what discharging current is being provided to the second rechargeable power supply of the portable device.

### Claim 5 (depends on 1)

The method according to claim 1, further comprising:
monitoring the ambient temperature adjacent the portable device; and
providing a charging current to the second rechargeable power supply of the portable device for recharging the second rechargeable power supply, in dependence on the ambient temperature,
wherein:
when the ambient temperature adjacent the portable device is within a predetermined temperature range, providing a charging current of about 10 C to the second rechargeable power supply, and
when the ambient temperature adjacent the portable device is outside the predetermined temperature range, preventing the charging current from being supplied to the second rechargeable power supply.

### Claim 6 (depends on 1)

The method according to claim 1, wherein the monitoring the ambient temperature is performed with a frequency of about once per minute to about 5 times per minute.

### Claim 7 (depends on 6)

The method according to claim 6, wherein the determining a charging current is performed in dependence on a weighted average of the monitored ambient temperature.

### Claim 8

A method of controlling a portable device of an electrical system, the portable device comprising an electrically heated aerosol-generating device configured to receive an aerosol-generating substrate, the device comprising a rechargeable power supply and at least one electrical heating element, the method comprising:
monitoring an ambient temperature adjacent the electrically heated aerosol-generating device; and
providing power to the at least one electrical heating element from the rechargeable power supply in dependence on the ambient temperature adjacent the electrically heated aerosol-generating device,
wherein:
when the ambient temperature adjacent the electrically heated aerosol-generating device is within a predetermined temperature range, providing the power to the at least one electrical heating element, and
when the ambient temperature adjacent the electrically heated aerosol-generating device is outside the predetermined temperature range, preventing the power from being supplied to the at least one electrical heating element.

### Claim 9

An electrical system, comprising:
a portable device comprising a first rechargeable power supply; and
a primary charging device configured to receive the portable device, the primary charging device comprising:
a cavity configured to receive the portable device,
a second rechargeable power supply configured to charge the first rechargeable power supply of the portable device,
a temperature sensor configured to sense an ambient temperature adjacent the primary charging device, and
a controller configured to control the supply of power to the second rechargeable power supply from an external power source to recharge the second rechargeable power supply, in dependence on the ambient temperature adjacent the primary charging device,
wherein:
when the ambient temperature adjacent the primary charging device is within a first predetermined range, the controller is configured to provide a charging current of less than about 0.1 C,
when the ambient temperature adjacent the primary charging device is within a second predetermined range, the controller is configured to provide a charging current of greater than about 0.1 C, and
when the ambient temperature adjacent the primary charging device is above a predetermined temperature, preventing the charging of the second rechargeable power supply.

### Claim 10 (depends on 9)

The system according to claim 9, the primary charging device further comprising an indicator configured to indicate to a user what charging current is being provided to the second rechargeable power supply, when the second rechargeable power supply of the primary charging device is being charged.

### Claim 11 (depends on 9)

The system according to claim 9,
wherein the primary charging device controller is further configured to control the supply of power from the second rechargeable power supply to the portable device to recharge the first rechargeable power supply, and
wherein:
when the ambient temperature adjacent the primary charging device is within a third predetermined temperature range, the controller is further configured to provide a discharging current between about 0.1 C and about 0.3 C to the first rechargeable power supply of the portable device,
when the ambient temperature adjacent the primary charging device is within a fourth predetermined temperature range, the controller is further configured to provide a discharging current between about 0.8 C and about 1.2 C to the first rechargeable power supply of the portable device, and
when the ambient temperature adjacent the primary charging device is above a predetermined temperature, the controller is further configured to prevent discharging of the second rechargeable power supply.

### Claim 12 (depends on 11)

The system according to claim 11, the primary charging device further comprising an indicator configured to indicate to a user what discharging current is being provided to the first rechargeable power supply of the portable device when the second rechargeable power supply of the primary charging device is being discharged.

### Claim 13 (depends on 9)

The system according to claim 9, the portable device further comprising another temperature sensor configured to sense an ambient temperature adjacent the portable device,
wherein the primary charging device controller is further configured to control the supply of power from the second rechargeable power supply to the first rechargeable power supply to recharge the first rechargeable power supply in dependence on the ambient temperature adjacent the portable device, and
wherein:
when the ambient temperature adjacent the portable device is within a predetermined temperature range, the controller is further configured to provide a charging current of about 10 C to the first rechargeable power supply, and
when the ambient temperature adjacent the portable device is outside the predetermined temperature range, the controller is further configured to prevent the charging current from being supplied to the first rechargeable power supply.

### Claim 14

A portable device of an electrical system, wherein the portable device is an electrically heated aerosol-generating device configured to receive an aerosol-generating substrate, comprising:
a heating element;
a rechargeable power supply configured to supply power to the heating element;
a temperature sensor configured to sense an ambient temperature adjacent the electrically heated aerosol-generating device; and
a controller configured to control a supply of power from the rechargeable power supply to the heating element in dependence on the ambient temperature adjacent the electrically heated aerosol-generating device,
wherein:
when the ambient temperature adjacent the electrically heated aerosol-generating device is within a predetermined temperature range, the controller is further configured to supply power to the heating element, and
when the ambient temperature adjacent the electrically heated aerosol-generating device is outside the predetermined temperature range, the controller is further configured to prevent power from being supplied to the heating element.

### Claim 15 (depends on 14)

The system according to claim 14, further comprising an indicator configured to indicate to a user when the ambient temperature adjacent the device is outside the predetermined temperature range.