WO2023001926A1

WO2023001926A1 - An aerosol-generating device comprising a detachable housing portion

Info

Publication number: WO2023001926A1
Application number: PCT/EP2022/070421
Authority: WO
Inventors: Michele CATTONI; Valerio OLIANA; Torsten Richard Mathias TINGSTRÖM; Ezequiel VALDEZ ROJAS
Original assignee: Philip Morris Products S.A.
Priority date: 2021-07-21
Filing date: 2022-07-20
Publication date: 2023-01-26
Also published as: KR20240036622A; IL310067A; CN117642090A; CN117677309A; WO2023001925A1; KR20240036636A

Abstract

There is provided an aerosol-generating device (10; 210) comprising a housing (12; 212) comprising a first housing portion (14; 214) and a second housing portion (16; 216). The first housing portion (14; 214) defines a chamber (32) for receiving an aerosol-forming substrate. The second housing portion (16; 216) is configured for removable attachment to the first housing portion (14; 214). The aerosol-generating device (10; 210) also comprises an electric heater (22) positioned within the first housing portion (14; 214). The aerosol-generating device (10; 210) also comprises a power supply (20) positioned within the second housing portion (16; 216). The aerosol-generating device (10; 210) also comprises a controller (18) positioned within the first housing portion (14; 214), wherein the controller (18) is configured to control a supply of power from the power supply (20) to the electric heater (22) when the second housing portion (16; 216) is attached to the first housing portion (14; 214).

Description

AN AEROSOL-GENERATING DEVICE COMPRISING A DETACHABLE HOUSING PORTION

The present invention relates to an aerosol-generating device comprising a first housing portion and a second housing portion, wherein the second housing portion is configured for removable attachment to the first housing portion.

One type of aerosol-generating system is an electrically operated smoking system. Known handheld electrically operated smoking systems typically comprise an aerosol-generating device comprising a rechargeable battery, control electronics and an electric heater for heating an aerosol-generating article designed specifically for use with the aerosol-generating device. In some examples, the aerosol-generating article comprises an aerosol-forming substrate, such as a tobacco rod or a tobacco plug, and the heater contained within the aerosol-generating device is inserted into or located around the aerosol-forming substrate when the aerosol-generating article is inserted into the aerosol-generating device. In an alternative electrically operated smoking system, the aerosol-generating article may comprise a capsule containing an aerosol forming substrate, such as loose tobacco.

In known electrically operated smoking systems the number of smoking experiences that may be provided by the device before the battery requires recharging is limited by the storage capacity of the battery. However, increasing the storage capacity of the battery requires a physically larger battery and results in a larger and heavier aerosol-generating device, which may be undesirable for a user. Therefore, manufacturers may select a battery size that provides a compromise between the battery storage capacity and the physical size of the aerosol-generating device. However, the compromise may not satisfy all users, since some users may favour larger battery capacities and other users may favour smaller aerosol-generating devices.

It would be desirable to provide an aerosol-generating device that mitigates or overcomes the problem of power supply capacity.

According to the present invention there is provided an aerosol-generating device comprising a housing comprising a first housing portion and a second housing portion. The first housing portion may define a chamber for receiving an aerosol-forming substrate. The second housing portion may be configured for removable attachment to the first housing portion. The aerosol-generating device may comprise an electric heater. The electric heater may be positioned within the first housing portion. The aerosol-generating device may comprise a power supply. The power supply may be positioned within the second housing portion. The aerosol generating device may comprise a controller. The controller may be positioned within the first housing portion. The controller may be configured to control a supply of power from the power supply to the electric heater. The controller may be configured to control the supply of power from the power supply to the electric heater when the second housing portion is attached to the first housing portion. According to the present invention there is also provided an aerosol-generating device comprising a housing comprising a first housing portion and a second housing portion. The first housing portion defines a chamber for receiving an aerosol-forming substrate. The second housing portion is configured for removable attachment to the first housing portion. The aerosol generating device also comprises an electric heater positioned within the first housing portion. The aerosol-generating device also comprises a power supply positioned within the second housing portion. The aerosol-generating device also comprises a controller positioned within the first housing portion, wherein the controller is configured to control a supply of power from the power supply to the electric heater when the second housing portion is attached to the first housing portion.

Advantageously, providing the power supply in a second housing portion that is detachable from the first housing portion may facilitate use of a single first housing portion with multiple different power supplies. For example, when the power supply is fully discharged, the user may replace the second housing portion with a further housing portion containing a different, fully charged power supply. Advantageously, this may allow a user to continue using the aerosol generating device without waiting for the power supply to recharge. In another example, the user may select the second housing portion from a range of housing portions having different sizes and comprising power supplies having different storage capacities. Advantageously, this may allow a user to select a preferred compromise between the power supply storage capacity and the physical size of the aerosol-generating device.

Advantageously, positioning the controller and the electric heater within the first housing portion may reduce or minimise the number of electrical components within the second housing portion. Advantageously, reducing or minimising the number of electrical components within the second housing portion may reduce or minimise the cost of the second housing portion. Reducing or minimising the cost of the second housing portion may be particularly desirable for users wishing to purchase multiple housing portions each comprising a power supply for use with the first housing portion.

Preferably, the housing comprises an interface for attaching the second housing portion to the first housing portion.

The interface may be configured to retain the second housing portion in releasable attachment with the first housing portion by an interference fit. Advantageously, an interference fit may provide a simple and cost-effective arrangement for attaching the second housing portion to the first housing portion.

The interface may comprise at least one of a bayonet connection and a screw connection. The interface may comprise a female bayonet connector on the first housing portion and a male bayonet connector on the second housing portion. The interface may comprise a male bayonet connector on the first housing portion and a female bayonet connector on the second housing portion. The interface may comprise a female screw thread on the first housing portion and a male screw thread on the second housing portion. The interface may comprise a male screw thread on the first housing portion and a female screw thread on the second housing portion.

The interface may comprise a slot arranged to receive at least a part of the first housing portion or at least a part of the second housing portion. The slot may be arranged to slidably receive at least a part of the first housing or at least a part of the second housing portion. The slot may be provided on the first housing portion and arranged to receive at least a portion of the second housing portion. The slot may be provided on the second housing portion and arranged to receive at least a portion of the first housing portion.

The interface may comprise a projection arranged to be received within the slot. The slot may be arranged to slidably receive the projection. The slot may be provided on the first housing portion and the projection may be provided on the second housing portion. The slot may be provided on the second housing portion and the projection may be provided on the first housing portion.

The interface may comprise a latching element arranged to retain the second housing portion in releasable attachment with the first housing portion. Advantageously, the latching element may reduce the risk of the second housing portion becoming accidentally detached from the first housing portion. The latching element may comprise a detent. The detent may be provided on the first housing and arranged to engage a part of the second housing portion when the second housing portion is attached to the first housing portion. The detent may be provided on the second housing portion and arranged to engage a part of the first housing portion when the second housing portion is attached to the first housing portion.

The interface may comprise a release element arranged to disengage the latching element. The release element may be arranged to disengage the latching element from the first housing portion. The release element may be arranged to disengage the latching element from the second housing portion. The release element may comprise at least one of a lever and a button. In embodiments in which the latching element comprises a detent on the first housing portion, the release element may be arranged to disengage the latching element from a part of the second housing portion. In embodiments in which the latching element comprises a detent on the second housing portion, the release element may be arranged to disengage the detent from a part of the first housing portion.

The interface may comprise a first magnetic element on the first housing portion and a second magnetic element on the second housing portion, wherein the second magnetic element is arranged to engage the first magnetic element when the second housing portion is attached to the first housing portion.

As used herein, the term “magnetic element” is used to refer to magnets and magnetisable materials, such as ferromagnetic materials. The first magnetic element may comprise a magnet WO 2023/001926 PCT/EP2022/07042l^1/O0i 4 and the second magnetic element may comprise a magnetisable material. The first magnetic element may comprise a magnetisable material and the second magnetic element may comprise a magnet. The first magnetic element and the second magnetic element may each comprise a magnet.

The aerosol-generating device may comprise a first electrical contact positioned on the first housing portion and a second electrical contact positioned on the second housing portion, wherein the second electrical contact is configured to engage the first electrical contact when the second housing portion is attached to the first housing portion. Advantageously, the first electrical contact and the second electrical contact may facilitate the transfer of at least one of electrical power and data between the first housing portion and the second housing portion.

Preferably, the controller is configured to control the supply of power from the power supply to the electric heater via the first electrical contact and the second electrical contact when the second housing portion is attached to the first housing portion.

At least one of the first electrical contact and the second electrical contact may comprise a spring-loaded pin. Advantageously, a spring-loaded pin may facilitate a secure electrical connection between the first electrical contact and the second electrical contact when the second housing portion is attached to the first housing portion.

The power supply may be a rechargeable power supply. The aerosol-generating device may comprise a charging circuit positioned within the second housing portion and configured to control a supply of power received from an external device for recharging the power supply. Advantageously, providing the charging circuit within the second housing portion may facilitate recharging of the power supply when the second housing portion is detached from the first housing portion.

The aerosol-generating device may comprise a charging electrical contact positioned on the second housing portion for receiving a supply of power from an external device for recharging the power supply.

The charging electrical contact may be positioned on the second housing portion so that the charging electrical contact is accessible to a user when the second housing portion is attached to the first housing portion. Advantageously, this arrangement may facilitate recharging of the power supply when the second housing portion is attached to the first housing portion. Recharging of the power supply when the second housing portion is attached to the first housing portion may be convenient for a user.

The charging electrical contact may be positioned on the second housing portion so that the charging electrical contact is inaccessible to a user when the second housing portion is attached to the first housing portion. Advantageously, this arrangement may prevent recharging of the power supply when the second housing portion is attached to the first housing portion. Preventing recharging of the power supply when the second housing portion is attached to the first housing portion may be useful for preventing recharging of the power supply while the aerosol-generating device is in use.

In embodiments in which the aerosol-generating device comprises a second electrical contact on the second housing portion, the charging electrical contact may comprise the second electrical contact.

The second housing portion may comprise a first end and a second end opposite the first end. The second electrical contact may be positioned at the first end of the second housing portion. The charging electrical contact may be positioned at the second end of the second housing portion.

The charging electrical contact may form part of an external plug or socket on the second housing portion. The charging electrical contact may form part of a USB-A connector, a USB-B connector, a USB-C connector, or a micro-USB connector. For example, the aerosol-generating device may comprise a USB plug or a USB socket to allow connection of the aerosol-generating device to another USB enabled device. The USB plug or socket may allow connection of the aerosol-generating device to a USB charging device to recharge the power supply. The USB plug or socket may support the transfer of data to or from, or both to and from, the aerosol generating device. The aerosol-generating device may be connectable to a computer to transfer data to the aerosol-generating device, such as new heating profiles.

In those embodiments in which the aerosol-generating device comprises a USB plug or socket, the aerosol-generating device may further comprise a removable cover that covers the USB plug or socket when not in use. In embodiments in which the USB plug or socket is a USB plug, the USB plug may additionally or alternatively be selectively retractable within the device.

The charging circuit may comprise a wireless charging circuit configured to wirelessly receive a supply of power from an external device for recharging the power supply. The wireless charging circuit may be provided as an alternative to a charging electrical contact. The aerosol generating device may comprise both the charging electrical contact and the wireless charging circuit to enable recharging of the power supply via the charging electrical contact and the wireless charging circuit.

The aerosol-generating device may comprise a charge indicator positioned on the second housing portion, wherein the charge indicator is configured to provide a user with a visual indication of an amount of electrical charge stored within the power supply. Advantageously, the charge indicator may assist a user in planning when to recharge the power supply.

The charge indicator may comprise a segmented display. For example, the charge indicator may comprise a series of light emitting diodes (LEDs), wherein charge indicator is configured to illuminate a number of the LEDs to represent the amount of electrical charge stored within the power supply. The aerosol-generating device may comprise a user input for activating the charge indicator. For example, the aerosol-generating device may comprise a push-button positioned on the second housing portion and configured to activate the charge indicator.

The power supply may be a DC voltage source. In preferred embodiments, the power supply is a battery. For example, the power supply may be a nickel-metal hydride battery, a nickel cadmium battery, ora lithium based battery, for example a lithium-cobalt, a lithium-iron-phosphate or a lithium-polymer battery. The power supply may alternatively be another form of charge storage device such as a capacitor. Preferably, the power supply is rechargeable. The power supply may have a capacity that allows for the storage of enough energy for multiple uses of the aerosol-generating device.

The power supply may be a first power supply, wherein the aerosol-generating device further comprises a third housing portion configured for removable attachment to the first housing portion and a second power supply positioned within the third housing portion.

Advantageously, providing first and second power supplies may allow use of the first housing portion with either the second housing portion comprising the first power supply or the third housing portion comprising the second power supply. Advantageously, this may allow a user to continue using the aerosol-generating device without waiting for one of the power supplies to recharge. For example, when the first power supply has been exhausted, a user may detach the second housing portion from the first housing portion, then attach the third housing portion to the first housing portion and continue using the aerosol-generating device with the second power supply. While using the aerosol-generating device within the second power supply, the user may recharge the first power supply. The opposite procedure may be used once the second power supply has been exhausted and the first power supply has been recharged.

The interface may be configured for attaching the third housing portion to the first housing portion. The interface may be configured for attaching only one of the second housing portion and the third housing portion to the first housing portion at a time. In other words, the interface may be configured so that the second housing portion and the third housing portion cannot be attached to the first housing portion simultaneously.

The interface may be configured to retain the third housing portion in releasable attachment with the first housing portion by an interference fit. Advantageously, an interference fit may provide a simple and cost-effective arrangement for attaching the third housing portion to the first housing portion.

The interface may comprise at least one of a bayonet connection and a screw connection. The interface may comprise a female bayonet connector on the first housing portion and a male bayonet connector on each of the second housing portion and the third housing portion. The interface may comprise a male bayonet connector on the first housing portion and a female bayonet connector on each of the second housing portion and the third housing portion. The interface may comprise a female screw thread on the first housing portion and a male screw thread on each of the second housing portion and the third housing portion. The interface may comprise a male screw thread on the first housing portion and a female screw thread on each of the second housing portion and the third housing portion.

The interface may comprise a slot arranged to receive at least a part of the first housing portion or at least a part of the third housing portion. The slot may be arranged to slidably receive at least a part of the first housing or at least a part of the third housing portion.

The slot may be provided on the first housing portion and arranged to receive at least a portion of the second housing portion and at least a portion of the third housing portion. The slot may be a first slot provided on the second housing portion, wherein the interface further comprises a second slot provided on the third housing portion, and wherein each of the first slot and the second slot is arranged to receive at least a portion of the first housing portion.

The interface may comprise a projection arranged to be received within the slot. The slot may be arranged to slidably receive the projection. The slot may be provided on the first housing portion and the projection may be a first projection provided on the second housing portion, wherein the interface further comprises a second projection provided on the third housing portion. The slot may be a first slot provided on the second housing portion, wherein the interface further comprises a second slot provided on the third housing portion, and wherein the projection may be provided on the first housing portion.

The latching element may be arranged to retain the third housing portion in releasable attachment with the first housing portion. The latching element may comprise a detent. The detent may be provided on the first housing and arranged to engage a part of the second housing portion when the second housing portion is attached to the first housing portion and arranged to engage a part of the third housing portion when the third housing portion is attached to the first housing portion. The detent may be a first detent provided on the second housing portion and arranged to engage a part of the first housing portion when the second housing portion is attached to the first housing portion. The latching element may further comprise a second detent provided on the third housing portion and arranged to engage a part of the first housing portion when the third housing portion is attached to the first housing portion.

The release element may be arranged to disengage the latching element from the first housing portion. The release element may be a first release element provided on the second housing portion, wherein the interface further comprises a second release element provided on the third housing portion.

The release element may be arranged to disengage the latching element from the third housing portion. In embodiments in which the latching element comprises a detent on the first housing portion, the release element may be arranged to disengage the latching element from a part of the third housing portion. In embodiments in which the latching element comprises a second detent on the third housing portion, the second release element may be arranged to disengage the second detent from a part of the first housing portion.

The interface may comprise a third magnetic element on the third housing portion and arranged to engage the first magnetic element when the third housing portion is attached to the first housing portion. The first magnetic element may comprise a magnet and the third magnetic element may comprise a magnetisable material. The first magnetic element may comprise a magnetisable material and the third magnetic element may comprise a magnet. The first magnetic element and the third magnetic element may each comprise a magnet.

The aerosol-generating device may comprise a third electrical contact positioned on the third housing portion, wherein the third electrical contact is configured to engage the first electrical contact when the third housing portion is attached to the first housing portion. Advantageously, the first electrical contact and the third electrical contact may facilitate the transfer of at least one of electrical power and data between the first housing portion and the third housing portion.

Preferably, the controller is configured to control the supply of power from the second power supply to the electric heater via the first electrical contact and the third electrical contact when the third housing portion is attached to the first housing portion.

At least one of the first electrical contact and the third electrical contact may comprise a spring-loaded pin. Advantageously, a spring-loaded pin may facilitate a secure electrical connection between the first electrical contact and the third electrical contact when the third housing portion is attached to the first housing portion.

The second power supply may be a rechargeable power supply. The aerosol-generating device may comprise a charging circuit positioned within the third housing portion and configured to control a supply of power received from an external device for recharging the second power supply. Advantageously, providing the charging circuit within the third housing portion may facilitate recharging of the second power supply when the third housing portion is detached from the first housing portion.

The aerosol-generating device may comprise a charging electrical contact positioned on the third housing portion for receiving a supply of power from an external device for recharging the second power supply.

The charging electrical contact may be positioned on the third housing portion so that the charging electrical contact is accessible to a user when the third housing portion is attached to the first housing portion. Advantageously, this arrangement may facilitate recharging of the second power supply when the third housing portion is attached to the first housing portion. Recharging of the second power supply when the third housing portion is attached to the first housing portion may be convenient for a user. The charging electrical contact may be positioned on the third housing portion so that the charging electrical contact is inaccessible to a user when the third housing portion is attached to the first housing portion. Advantageously, this arrangement may prevent recharging of the second power supply when the third housing portion is attached to the first housing portion. Preventing recharging of the second power supply when the third housing portion is attached to the first housing portion may be useful for preventing recharging of the second power supply while the aerosol-generating device is in use.

In embodiments in which the aerosol-generating device comprises a third electrical contact on the third housing portion, the charging electrical contact may comprise the third electrical contact.

The third housing portion may comprise a first end and a second end opposite the first end. The third electrical contact may be positioned at the first end of the third housing portion. The charging electrical contact may be positioned at the second end of the third housing portion.

The charging electrical contact may form part of an external plug or socket on the third housing portion. The charging electrical contact may form part of a USB-A connector, a USB-B connector, a USB-C connector, or a micro-USB connector. For example, the aerosol-generating device may comprise a USB plug or a USB socket to allow connection of the aerosol-generating device to another USB enabled device. The USB plug or socket may allow connection of the aerosol-generating device to a USB charging device to recharge the second power supply. The USB plug or socket may support the transfer of data to or from, or both to and from, the aerosol generating device. The aerosol-generating device may be connectable to a computer to transfer data to the aerosol-generating device, such as new heating profiles.

The charging circuit may comprise a wireless charging circuit configured to wirelessly receive a supply of power from an external device for recharging the second power supply. The wireless charging circuit may be provided as an alternative to a charging electrical contact. The aerosol-generating device may comprise both the charging electrical contact and the wireless charging circuit to enable recharging of the second power supply via the charging electrical contact and the wireless charging circuit.

The aerosol-generating device may comprise a charge indicator positioned on the third housing portion, wherein the charge indicator is configured to provide a user with a visual indication of an amount of electrical charge stored within the second power supply. Advantageously, the charge indicator may assist a user in planning when to recharge the second power supply. The charge indicator may comprise a segmented display. For example, the charge indicator may comprise a series of light emitting diodes (LEDs), wherein charge indicator is configured to illuminate a number of the LEDs to represent the amount of electrical charge stored within the second power supply.

The aerosol-generating device may comprise a user input for activating the charge indicator. For example, the aerosol-generating device may comprise a push-button positioned on the third housing portion and configured to activate the charge indicator.

The second power supply may be a DC voltage source. In preferred embodiments, the second power supply is a battery. For example, the second power supply may be a nickel-metal hydride battery, a nickel cadmium battery, or a lithium based battery, for example a lithium-cobalt, a lithium-iron-phosphate or a lithium-polymer battery. The second power supply may alternatively be another form of charge storage device such as a capacitor. Preferably, the second power supply is rechargeable. The second power supply may have a capacity that allows for the storage of enough energy for multiple uses of the aerosol-generating device.

The first power supply may have a first electrical charge storage capacity and the second power supply may have a second electrical charge storage capacity.

The first electrical charge storage capacity may be the same as the second electrical charge storage capacity.

The first electrical charge storage capacity may be different to the second electrical charge storage capacity. Advantageously, providing the first power supply and the second power supply with different electrical charge storage capacities may facilitate providing the second housing portion and the third housing portion with different dimensions. Advantageously, a user may choose whether to use the second housing portion of the third housing portion with the first housing portion depending on whether the user prefers a large electrical charge storage capacity or a physically smaller aerosol-generating device. Advantageously, if the user’s preference changes, the user may choose to swap the second housing portion for the third housing portion or swap the third housing portion for the second housing portion.

A ratio of the first electrical charge storage capacity to the second electrical charge storage capacity may be between about 1.5 and about 3, optionally between about 1.5 and about 2.5, optionally between about 1.7 and about 2.3.

The second housing portion may have a different size to the third housing portion.

The second housing portion may have a different shape to the third housing portion.

The chamber of the first housing portion may define a reservoir for containing a liquid aerosol-forming substrate. The first housing portion may define an airflow outlet at a first end of the first housing portion. The chamber may define a cavity for receiving an aerosol-generating article. The first housing portion may define an opening at an end of the cavity, wherein the opening is positioned at a first end of the first housing portion.

The first housing portion may comprise a second end opposite the first end, wherein the second housing portion is configured for removable attachment to the second end of the first housing portion. In embodiments in which the aerosol-generating device comprises a third housing portion, the third housing portion may be configured for removable attachment to the second end of the first housing portion.

The first housing portion may comprise a second end opposite the first end and at least one sidewall extending between the first end and the second end, wherein the second housing portion is configured for removable attachment to the at least one sidewall. In embodiments in which the aerosol-generating device comprises a third housing portion, the third housing portion may be configured for removable attachment to the at least one sidewall.

The aerosol-generating device may be configured so that only one of the second housing portion and the third housing portion may be attached to the first housing portion at any one time. In other words, the aerosol-generating device may be configured so that the second housing portion and the third housing portion may not be attached to the first housing portion simultaneously.

The aerosol-generating device may comprise a closure member arranged to move between a closed position in which the closure member at least partially covers the opening and an open position in which the opening is uncovered.

The closure member may be a first closure member attached to the second housing portion. The first closure member may be arranged to rotate with respect to the second housing portion between the closed position and the open position. The first closure member may be arranged to overlie the second housing portion when the first closure member is in the open position.

In embodiments in which the aerosol-generating device comprises a third housing portion, the aerosol-generating device may comprise a second closure member arranged to move between a closed position in which the second closure member at least partially covers the opening and an open position in which the opening is uncovered.

The second closure member may be attached to the third housing portion. The second closure member may be arranged to rotate with respect to the third housing portion between the closed position and the open position. The second closure member may be arranged to overlie the third housing portion when the second closure member is in the open position.

Each of the first housing portion, the second housing portion and the third housing portion may comprise any suitable material or combination of materials. Examples of suitable materials include metals, alloys, plastics or composite materials containing one or more of those materials, or thermoplastics that are suitable for food or pharmaceutical applications, for example polypropylene, polyetheretherketone (PEEK) and polyethylene. Preferably, the material is light and non-brittle.

The electric heater may be positioned outside the chamber.

The electric heater may be positioned within the chamber.

The electric heater may be coil-shaped. The electric heater may be configured to heat a fluid transport structure. The aerosol-generating device may comprise a fluid transport structure, wherein the electric heater is arranged to heat the fluid transport structure. The fluid transport structure may comprise a wick. The electric heater may be coil-shaped, wherein the electric heater is coiled around the fluid transport structure.

The chamber may define a cavity for receiving an aerosol-generating article. The electric heater may be arranged to extend around an outer surface of an aerosol-generating article received within the cavity. The electric heater may extend into the cavity. The electric heater may be arranged to be received within an aerosol-generating article when the aerosol-generating article is inserted into the cavity. The electric heater may be an elongate electric heater. The electric heater may be blade-shaped. The electric heater may be pin-shaped. The electric heater may be cone-shaped.

The electric heater may comprise an inductive heating element. During use, the inductive heating element inductively heats at least one susceptor material to heat an aerosol-generating article received within the cavity. The at least one susceptor material may form part of the aerosol generating device. The at least one susceptor material may form part of the aerosol-generating article. The inductive heating element may comprise at least one inductor coil extending around at least a portion of the cavity so that, when an aerosol-generating article is inserted into the cavity, at least a portion of the aerosol-generating article is received within the at least one inductor coil.

The electric heater may comprise a resistive heating element. During use, an electrical current is supplied to the resistive heating element to generate heat by resistive heating.

Suitable materials for forming the resistive heating element include but are not limited to: semiconductors such as doped ceramics, electrically “conductive” ceramics (such as, for example, molybdenum disilicide), carbon, graphite, metals, metal alloys and composite materials made of a ceramic material and a metallic material. Such composite materials may comprise doped or undoped ceramics. Examples of suitable doped ceramics include doped silicon carbides. Examples of suitable metals include titanium, zirconium, tantalum and metals from the platinum group. Examples of suitable metal alloys include stainless steel, nickel-, cobalt-, chromium-, aluminium- titanium- zirconium-, hafnium-, niobium-, molybdenum-, tantalum-, tungsten-, tin-, gallium-, manganese- and iron-containing alloys, and super-alloys based on nickel, iron, cobalt, stainless steel, Timetal® and iron-manganese-aluminium based alloys. In some embodiments, the resistive heating element comprises one or more stamped portions of electrically resistive material, such as stainless steel. Alternatively, the resistive heating element may comprise a heating wire or filament, for example a Ni-Cr (Nickel-Chromium), platinum, tungsten or alloy wire.

The electric heater may comprise an electrically insulating substrate, wherein the resistive heating element is provided on the electrically insulating substrate. The electrically insulating substrate may be a ceramic material such as Zirconia or Alumina. Preferably, the electrically insulating substrate has a thermal conductivity of less than or equal to about 2 Watts per metre Kelvin.

Preferably, the controller is arranged to supply power to the electric heater according to a predetermined heating cycle when the aerosol-generating device is used to heat an aerosol generating article received within the cavity.

In embodiments in which the electric heater comprises a resistive heating element, the controller may be arranged to supply power to the resistive heating element according to a predetermined pyrolysis cycle to clean the electric heater when there is not an aerosol-generating article received within the cavity. The pyrolysis cycle may clean the electric heater by pyrolysis of residue remaining on the electric heater after use of the aerosol-generating device to heat one or more aerosol-generating articles. Typically, the maximum temperature to which the electric heater is heated during a pyrolysis cycle is higher than the maximum temperature to which the electric heater is heated during a heating cycle to heat an aerosol-generating article. Typically, the total duration of a pyrolysis cycle is shorter than the total duration of a heating cycle.

Preferably, the aerosol-generating device comprises at least one air inlet. Preferably, the at least one air inlet is in fluid communication with the cavity.

The aerosol-generating device may comprise a sensor to detect air flow indicative of a user taking a puff. The air flow sensor may be an electro-mechanical device. The air flow sensor may be any of: a mechanical device, an optical device, an opto-mechanical device and a micro electro mechanical systems (MEMS) based sensor. The aerosol-generating device may comprise a manually operable switch for a user to initiate a puff.

The aerosol-generating device may comprise a temperature sensor. The temperature sensor may detect the temperature of the electric heater or the temperature of an aerosol generating article received within the cavity. The temperature sensor may be a thermistor. The temperature sensor may comprise a circuit configured to measure the resistivity of the electric heater and derive a temperature of the electric heater by comparing the measured resistivity to a calibrated curve of resistivity against temperature.

Advantageously, deriving the temperature of the electric heater may facilitate control of the temperature to which the electric heater is heated during use. The controller may be configured to adjust the supply of power to the electric heater in response to a change in the measured resistivity of the electric heater.

Advantageously, deriving the temperature of the electric heater may facilitate puff detection. For example, a measured drop in the temperature of the electric heater may correspond to a user puffing or drawing on the aerosol-generating device.

Preferably, the aerosol-generating device comprises an indicator for indicating when the electric heater is activated. The indicator may comprise a light, activated when the electric heater is activated.

According to the present disclosure there is also provided an aerosol-generating system comprising an aerosol-generating device as described herein and an aerosol-generating article comprising an aerosol-forming substrate.

As used herein, the term “aerosol-generating article” refers to an article comprising an aerosol-forming substrate that, when heated, releases volatile compounds that can form an aerosol.

The aerosol-forming substrate may comprise a plug of tobacco. The tobacco plug may comprise one or more of: powder, granules, pellets, shreds, spaghettis, strips or sheets containing one or more of: tobacco leaf, fragments of tobacco ribs, reconstituted tobacco, homogenised tobacco, extruded tobacco and expanded tobacco. Optionally, the tobacco plug may contain additional tobacco or non-tobacco volatile flavour compounds, to be released upon heating of the tobacco plug. Optionally, the tobacco plug may also contain capsules that, for example, include the additional tobacco or non-tobacco volatile flavour compounds. Such capsules may melt during heating of the tobacco plug. Alternatively, or in addition, such capsules may be crushed prior to, during, or after heating of the tobacco plug.

The aerosol-generating article may comprise a mouthpiece positioned downstream of the tobacco plug. The mouthpiece may be located at a downstream end of the aerosol-generating article. The mouthpiece may comprise a cellulose acetate filter plug.

The invention is defined in the claims. However, below there is provided a non-exhaustive list of non-limiting examples. Any one or more of the features of these examples may be combined with any one or more features of another example, embodiment, or aspect described herein. Example Ex1: An aerosol-generating device comprising: a housing comprising a first housing portion defining a chamber for receiving an aerosol forming substrate and a second housing portion, wherein the second housing portion is configured for removable attachment to the first housing portion; an electric heater positioned within the first housing portion; a power supply positioned within the second housing portion; and a controller positioned within the first housing portion, wherein the controller is configured to control a supply of power from the power supply to the electric heater when the second housing portion is attached to the first housing portion.

Example Ex2: An aerosol-generating device according to Example Ex1, wherein the housing comprises an interface for attaching the second housing portion to the first housing portion.

Example Ex3: An aerosol-generating device according to Example Ex2, wherein the interface is configured to retain the second housing portion in releasable attachment with the first housing portion by an interference fit.

Example Ex4: An aerosol-generating device according to Example Ex2 or Ex3, wherein the interface comprises at least one of a bayonet connection and a screw connection.

Example Ex5: An aerosol-generating device according to any of Examples Ex2 to Ex4, wherein the interface comprises a slot arranged to receive at least a part of the first housing portion or at least a part of the second housing portion.

Example Ex6: An aerosol-generating device according to any of Examples Ex2 to Ex5, wherein the interface comprises a latching element arranged to retain the second housing portion in releasable attachment with the first housing portion.

Example Ex7: An aerosol-generating device according to Example Ex6, wherein the interface further comprises a release element arranged to disengage the latching element.

Example Ex8: An aerosol-generating device according to any of Examples Ex2 to Ex7, wherein the interface comprises a first magnetic element on the first housing portion and a second magnetic element on the second housing portion, and wherein the second magnetic element is arranged to engage the first magnetic element when the second housing portion is attached to the first housing portion.

Example Ex9: An aerosol-generating device according to any preceding Example, further comprising a first electrical contact positioned on the first housing portion and a second electrical contact positioned on the second housing portion, wherein the second electrical contact is configured to engage the first electrical contact when the second housing portion is attached to the first housing portion.

Example Ex10: An aerosol-generating device according to Example Ex9, wherein the controller is configured to control the supply of power from the power supply to the electric heater via the first electrical contact and the second electrical contact when the second housing portion is attached to the first housing portion.

Example Ex11: An aerosol-generating device according to Example Ex9 or Ex10, wherein at least one of the first electrical contact and the second electrical contact comprises a spring-loaded pin. Example Ex12: An aerosol-generating device according to any preceding Example, wherein the power supply is a rechargeable power supply, and wherein the aerosol-generating device comprises a charging circuit positioned within the second housing portion and configured to control a supply of power received from an external device for recharging the power supply.

Example Ex13: An aerosol-generating device according to Example Ex12, further comprising a charging electrical contact positioned on the second housing portion for receiving a supply of power from an external device for recharging the power supply.

Example Ex14: An aerosol-generating device according to Example Ex13 in combination with Example Ex9, wherein the charging electrical contact comprises the second electrical contact.

Example Ex15: An aerosol-generating device according to Example Ex13 in combination with Example Ex9, wherein the second electrical contact is positioned at a first end of the second housing portion, wherein the second housing portion comprises a second end opposite the first end, and wherein the charging electrical contact is positioned at the second end of the second housing portion.

Example Ex16: An aerosol-generating device according to any of Examples Ex13 to Ex15, wherein the charging electrical contact forms part of a USB-A connector, a USB-B connector, a USB-C connector, or a micro-USB connector.

Example Ex17: An aerosol-generating device according to any of Examples Ex12 to Ex16, wherein the charging circuit comprises a wireless charging circuit configured to wirelessly receive a supply of power from an external device for recharging the power supply.

Example Ex18: An aerosol-generating device according to any preceding Example, further comprising a charge indicator positioned on the second housing portion, wherein the charge indicator is configured to provide a user with a visual indication of an amount of electrical charge stored within the power supply.

Example Ex19: An aerosol-generating device according to Example Ex18, wherein the charge indicator comprises a segmented display.

Example Ex20: An aerosol-generating device according to Example Ex18 or Ex19, further comprising a push-button positioned on the second housing portion and configured to activate the charge indicator.

Example Ex21 : An aerosol-generating device according to any preceding Example, wherein the power supply comprises a battery.

Example Ex22: An aerosol-generating device according to Example Ex21, wherein the battery comprises a lithium-based battery.

Example Ex23: An aerosol-generating device according to Example Ex21 or Ex22, wherein the battery is a rechargeable battery. WO 2023/001926 PCT/EP2022/07042l^1/O0i

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Example Ex24: An aerosol-generating device according to any preceding Example, wherein the power supply is a first power supply, wherein the aerosol-generating device further comprises a third housing portion configured for removable attachment to the first housing portion and a second power supply positioned within the third housing portion.

Example Ex25: An aerosol-generating device according to Example Ex24 in combination with Example Ex2, wherein the interface is configured for attaching the third housing portion to the first housing portion.

Example Ex26: An aerosol-generating device according to Example Ex25, wherein the interface is configured to retain the third housing portion in releasable attachment with the first housing portion by an interference fit.

Example Ex27: An aerosol-generating device according to Example Ex24 or Ex25, in combination with Example Ex5, wherein the slot is arranged to receive at least a part of the first housing portion or at least a part of the third housing portion.

Example Ex28: An aerosol-generating device according to any of Examples Ex25 to Ex27, in combination with Example Ex6, wherein the latching element is arranged to retain the third housing portion in releasable attachment with the first housing portion.

Example Ex29: An aerosol-generating device according to Example Ex28 in combination with Example Ex7, wherein the release element is arranged to disengage the latching element from the third housing.

Example Ex30: An aerosol-generating device according to any of Examples Ex25 to Ex29, in combination with Example Ex8, wherein the interface comprises a third magnetic element on the third housing portion and arranged to engage the first magnetic element when the third housing portion is attached to the first housing portion.

Example Ex31 : An aerosol-generating device according to any of Examples Ex24 to Ex30, further comprising a third electrical contact positioned on the third housing portion, wherein the third electrical contact is configured to engage the first electrical contact when the third housing portion is attached to the first housing portion.

Example Ex32: An aerosol-generating device according to Example Ex31 , wherein the controller is configured to control the supply of power from the second power supply to the electric heater via the first electrical contact and the third electrical contact when the third housing portion is attached to the first housing portion.

Example Ex33: An aerosol-generating device according to Example Ex31 or Ex32, wherein at least one of the first electrical contact and the third electrical contact comprises a spring-loaded pin.

Example Ex34: An aerosol-generating device according to any of Examples Ex24 to Ex33, wherein the second power supply is a rechargeable power supply, and wherein the aerosol-generating device comprises a charging circuit positioned within the third housing portion and configured to control a supply of power received from an external device for recharging the second power supply.

Example Ex35: An aerosol-generating device according to Example Ex34, further comprising a charging electrical contact positioned on the third housing portion for receiving a supply of power from an external device for recharging the second power supply.

Example Ex36: An aerosol-generating device according to Example Ex35 in combination with Example Ex31, wherein the charging electrical contact comprises the third electrical contact.

Example Ex37: An aerosol-generating device according to Example Ex35 in combination with Example Ex31, wherein the third electrical contact is positioned at a first end of the third housing portion, wherein the third housing portion comprises a second end opposite the first end, and wherein the charging electrical contact is positioned at the second end of the third housing portion.

Example Ex38: An aerosol-generating device according to any of Examples Ex35 to Ex37, wherein the charging electrical contact forms part of a USB-A connector, a USB-B connector, a USB-C connector, or a micro-USB connector.

Example Ex39: An aerosol-generating device according to Example Ex34, wherein the charging circuit is a wireless charging circuit configured to wirelessly receive a supply of power from an external device for recharging the second power supply.

Example Ex40: An aerosol-generating device according to any of Examples Ex24 to Ex39, further comprising a charge indicator positioned on the third housing portion, wherein the charge indicator is configured to provide a user with a visual indication of an amount of electrical charge stored within the second power supply.

Example Ex41 : An aerosol-generating device according to Example Ex40, wherein the charge indicator comprises a segmented display.

Example Ex42: An aerosol-generating device according to Example Ex40 or Ex41, further comprising a push-button positioned on the third housing portion and configured to activate the charge indicator.

Example Ex43: An aerosol-generating device according to any of Examples Ex24 to Ex42, wherein the second power supply comprises a battery.

Example Ex44: An aerosol-generating device according to Example Ex43, wherein the battery comprises a lithium-based battery.

Example Ex45: An aerosol-generating device according to Example Ex43 or Ex44, wherein the battery is a rechargeable battery.

Example Ex46: An aerosol-generating device according to any of Examples Ex24 to Ex45, wherein the first power supply has a first electrical charge storage capacity, wherein the second power supply has a second electrical charge storage capacity, and wherein the first electrical charge storage capacity is different to the second electrical charge storage capacity.

Example Ex47: An aerosol-generating device according to Example Ex46, wherein a ratio of the first electrical charge storage capacity to the second electrical charge storage capacity is between 1.5 and 3.

Example Ex48: An aerosol-generating device according to Example Ex47, wherein a ratio of the first electrical charge storage capacity to the second electrical charge storage capacity is between 1.5 and 2.5.

Example Ex49: An aerosol-generating device according to Example Ex48, wherein a ratio of the first electrical charge storage capacity to the second electrical charge storage capacity is between 1.7 and 2.3.

Example Ex50: An aerosol-generating device according to any of Examples Ex24 to Ex49, wherein the second housing portion has a different size to the third housing portion.

Example Ex51 : An aerosol-generating device according to any of Examples Ex24 to Ex50, wherein the second housing portion has a different shape to the third housing portion.

Example Ex52: An aerosol-generating device according to any preceding Example, wherein the chamber defines a reservoir for containing a liquid aerosol-forming substrate, and wherein the first housing portion defines an airflow outlet at a first end of the first housing portion.

Example Ex53: An aerosol-generating device according to any of Examples Ex1 to

Ex51, wherein the chamber defines a cavity for receiving an aerosol-generating article, wherein the first housing portion defines an opening at an end of the cavity, and wherein the opening is positioned at a first end of the first housing portion.

Example Ex54: An aerosol-generating device according to Example Ex52 or Ex53, wherein the first housing portion comprises a second end opposite the first end, and wherein the second housing portion is configured for removable attachment to the second end of the first housing portion.

Example Ex55: An aerosol-generating device according to Example Ex54 in combination with Example Ex24, wherein the third housing portion is configured for removable attachment to the second end of the first housing portion.

Example Ex56: An aerosol-generating device according to Example Ex52 or Ex53, wherein the first housing portion comprises a second end opposite the first end and at least one sidewall extending between the first end and the second end, and wherein the second housing portion is configured for removable attachment to the at least one sidewall.

Example Ex57: An aerosol-generating device according to Example Ex56 in combination with Example Ex24, wherein the third housing portion is configured for removable attachment to the at least one sidewall. Example Ex58: An aerosol-generating device according to Example Ex56 or Ex57, in combination with Example Ex53, further comprising a first closure member arranged to move between a closed position in which the first closure member at least partially covers the opening when the second housing portion is attached to the first housing portion and an open position in which the opening is uncovered, wherein the first closure member is connected to the second housing portion.

Example Ex59: An aerosol-generating device according to Example Ex58, wherein the first closure member is arranged to rotate with respect to the second housing portion between the closed position and the open position.

Example Ex60: An aerosol-generating device according to Example Ex58 or Ex59, wherein the first closure member is arranged to overlie the second housing portion when the first closure member is in the open position.

Example Ex61 : An aerosol-generating device according to any of Examples Ex58 to Ex60, in combination with Example Ex57, further comprising a second closure member arranged to move between a closed position in which the second closure member at least partially covers the opening when the third housing portion is attached to the first housing portion and an open position in which the opening is uncovered, wherein the second closure member is connected to the third housing portion.

Example Ex62: An aerosol-generating device according to Example Ex61 , wherein the second closure member is arranged to rotate with respect to the third housing portion between the closed position and the open position.

Example Ex63: An aerosol-generating device according to Example Ex61 or Ex62, wherein the second closure member is arranged to overlie the third housing portion when the second closure member is in the open position.

The invention will now be further described, by way of example only, with reference to the accompanying drawings in which:

Figure 1 is a cross-sectional view of an aerosol-generating device according to a first embodiment of the present invention with the closure member in the closed position;

Figure 2 is a perspective view of the aerosol-generating device of Figure 1 with the closure member in the open position;

Figure 3 is a front view of the aerosol-generating device of Figure 1 with the closure member in the closed position;

Figure 4 is a front view of the aerosol-generating device of Figure 1 with the closure member in the open position;

Figure 5 is a perspective view of the aerosol-generating device of Figure 1 with the closure member in the closed position; Figure 6 is a perspective view of the aerosol-generating device of Figure 1 with the closure member in the open position and an aerosol-generating article received in the cavity of the first housing portion;

Figure 7 is a front view of the aerosol-generating device of Figure 1 with the closure member in the open position and the second housing portion moved relative to the first housing portion;

Figures 8 and 9 are perspective views of the aerosol-generating device of Figure 1 showing the second housing portion sliding relative to the first housing portion;

Figure 10 is a perspective view of the second housing portion of the aerosol-generating device of Figure 1 ;

Figure 11 is a perspective view of the aerosol-generating device of Figure 1 showing the charging electrical contact;

Figure 12 shows a front view of the aerosol-generating device according to the first embodiment in a first configuration comprising the second housing portion;

Figure 13 shows a front view of the aerosol-generating device according to the first embodiment in a second configuration comprising a third housing portion;

Figure 14 is a cross-sectional view of an aerosol-generating device according to a second embodiment of the present invention;

Figure 15 is a perspective view of the aerosol-generating device of Figure 14;

Figure 16 is a perspective view of the aerosol-generating device of Figure 14 showing the second housing portion detached from the first housing portion;

Figure 17 shows a front view of the aerosol-generating device according to the second embodiment in a first configuration comprising the second housing portion; and

Figure 18 shows a front view of the aerosol-generating device according to the second embodiment in a second configuration comprising a third housing portion.

Figures 1 to 11 show an aerosol-generating device 10 according to a first embodiment of the present invention. The aerosol-generating device 10 comprises a housing 12 comprising a first housing portion 14 and second housing portion 16. The second housing portion 16 is configured for removable attachment to the first housing portion 14. A first electrical contact 52 is positioned on the first housing portion 14 and a second electrical contact 62 is positioned on the second housing portion 16. The first electrical contact 52 and the second electrical contact 62 are arranged to contact each other when the second housing portion 16 is attached to the first housing portion 14.

The aerosol-generating device 10 also comprises a charging circuit 19 and a first power supply 20 positioned within the second housing portion 16. The first power supply 20 is an electrical power supply comprising a rechargeable battery. A charging electrical contact 49, which is in the form of a USB-C connector, is included at an end of the second housing portion 16 and is configured to receive a supply of power from an external device. The charging circuit 19 is configured to control the supply of power received from an external device for recharging the first power supply 20.

The first housing portion 14 defines a chamber 32 in the form of a cavity for receiving an aerosol-generating article 80 and an opening 34 positioned at an end of the cavity. The opening 34 is positioned at a first end of the first housing portion 14. When an aerosol-generating article 80 is received within the cavity, the aerosol-generating article 80 and the aerosol-generating device 10 together form an aerosol-generating system.

The aerosol-generating device 10 further comprises an electric heater 22 and controller 18 positioned within the first housing portion 14. The electric heater 22 comprises an inductor coil wound around the cavity. The controller 18 is configured to control a supply of power from the first power supply 20 to the electric heater 22 via the first electrical contact 52 and the second electrical contact 62 when the second housing portion 16 is attached to the first housing portion 14. During use, the power supplied to the inductor coil of the electric heater 22 generates a varying magnetic field that inductively heats a susceptor in the aerosol-generating article 80 received within the cavity to generate an aerosol.

The aerosol-generating device 10 also comprises a closure member 42 positioned at a first end of the housing. The closure member 42 comprises a fixed portion 47 connected to the second housing portion 16 and a moveable portion 46 formed integrally with the fixed portion 47. The closure member 42 is formed from a flexible material so that the closure member 42 may be folded back on itself. In other words, the moveable portion 46 may be rotated relative to the fixed portion 47. The moveable portion 46 is rotatable with respect to the fixed portion 47 between a closed position in which the moveable portion 46 covers the opening 34 and an open position in which the moveable portion 46 does not cover the opening 34. When the moveable portion 46 is in an open position, the aerosol-generating article 80 can be received within the cavity. The closed position is illustrated in Figure 1 and the open position is illustrated in Figure 2.

A pair of magnets 70 is contained within the closure member 42 such that one magnet is positioned inside the moveable portion 46 and the other magnet is positioned inside the fixed portion 47. The magnets 70 are arranged to retain the moveable portion 46 against the fixed portion 47 when the moveable portion 46 is in the open position.

The closure member 42 also comprises a protrusion 43 extending from the moveable portion 46. The protrusion 43 is formed integrally with the moveable portion 46 and has an annular shape. The protrusion 43 is arranged such that, when the moveable portion 46 is in a closed position, the protrusion 43 is received within the opening 34 and engages the opening 34 by an interference fit. Advantageously, when the moveable portion 46 is in the closed position, the protrusion seals the opening 34 and retains the moveable portion 46 in the closed position.

The housing 12 comprises a rim 44 extending around part of the perimeter of the first end of the housing 12. The rim 44 forms a recess in which the closure member 42 is positioned. WO 2023/001926 PCT/EP2022/07042l^1/O0i

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Advantageously, the rim 44 protects the fixed portion 47 and protects the moveable portion 46 when the moveable portion 46 is in the closed position. A gap 45 in the rim 44 on the first housing portion allows an edge of the moveable portion 46 to be gripped when moving the moveable portion 46 from the closed position to the open position.

The aerosol-generating device 10 also comprises an interface for attaching the second housing portion 16 to the first housing portion 14. The interface comprises a slot 90 configured to slidably receive at least a part of the first housing portion 14. The slot 90 facilitates a sliding movement of the second housing portion 16 relative to the first housing portion 14. A second electrical contact 62 on the second housing portion 16 engages with the first electrical contact 52 on the first housing portion 14 when the second housing portion 16 is attached to the first housing portion 14. The first housing portion 14 comprises a side wall 15 extending between the first end of the first housing portion 14 and a second end of the first housing portion 14 opposite the first end. The interface is configured for removable attachment of the second housing portion 16 to the side wall 15 of the first housing portion 14.

As shown in Figures 7 to 9, the second housing portion 16 is slidably detachable from the first housing portion 14. To detach the second housing portion 16 from the first housing portion 14, a release button 51 at a second end of the first housing portion 14 is pressed to disengage a latching element from the second housing portion 16. Pressing the release button 51 allows the second housing portion 16 to slide relative to the first housing portion 14 until the second housing portion 16 is fully detached from the first housing portion 14. To attach the second housing portion 16 to the first housing portion 14, the sliding operation is reversed until the latching element engages the second housing portion 16. To facilitate alignment of the second housing portion 16 with the first housing portion 14, protrusions 91 on the first housing portion 14 are arranged to slide within guide slots 90 on the second housing portion 16.

As shown in Figure 9, detaching the second housing portion 16 from the first housing portion 14 reveals a device reset button 53 provided on the first housing portion 14. As shown in Figure 10, detaching the second housing portion 16 from the first housing portion 14 reveals an LED charge indicator 73 provided on the second housing portion 16. The LED charge indicator 73 is configured to provide a user with a visual indication of an amount of electrical charge stored within the first power supply 20.

Figure 12 shows a front view of the aerosol-generating device 10 in a first configuration in which the second housing portion 16 is attached to the first housing portion 14. Figure 13 shows a front view of the aerosol-generating device 10 in a second configuration in which the second housing portion 16 has been replaced by a third housing portion 116. The aerosol-generating device 10 is configured so that only one of the second housing portion 16 and the third housing portion 116 can be removably attached to the first housing portion at a time. The third housing portion 116 is similar to the second housing portion 16 and comprises the same features as described with respect to the second housing portion 16. The third housing portion 116 differs from the second housing portion 16 by the electrical charge storage capacity of the power supply and the physical size of the third housing portion 116. In particular, the third housing portion 116 comprises a second power supply having a smaller electrical charge storage capacity than the first power supply 20 of the second housing portion 16. Therefore, the second power supply has a smaller physical size than the first power supply 20, which results in the third housing portion 116 having a smaller physical size than the second housing portion 16. Advantageously, the second housing portion 16 and the third housing portion 116 allow a user to choose between the first configuration shown in Figure 12 in which the aerosol-generating device 10 has a power supply having a larger electrical charge storage capacity, and the second configuration of Figure 13 in which the aerosol-generating device 10 has a smaller physical size.

Figures 14 to 18 show an aerosol-generating device 210 according to a second embodiment of the present invention. The aerosol-generation device 210 is similar to the aerosol-generating device 10 of Figures 1 to 13 and like reference numerals are used to designate like parts.

The aerosol-generating device 210 comprises a housing 212 comprising a first housing portion 214 and second housing portion 216. The second housing portion 216 is configured for removable attachment to the first housing portion 214. A first electrical contact 52 is positioned on the first housing portion 214 and a second electrical contact 62 is positioned on the second housing portion 216. The first electrical contact 52 and the second electrical contact 62 are arranged to contact each other when the second housing portion 216 is attached to the first housing portion 214.

The aerosol-generating device 210 also comprises a charging circuit 19 and a first power supply 20 positioned within the second housing portion 216. The first power supply 20 is an electrical power supply comprising a rechargeable battery. A charging electrical contact 49, which is in the form of a USB-C connector, is included at an end of the second housing portion 216 and is configured to receive a supply of power from an external device. The charging circuit 19 is configured to control the supply of power received from an external device for recharging the first power supply 20.

The first housing portion 214 defines a chamber 32 in the form of a cavity for receiving an aerosol-generating article 80 and an opening 34 positioned at an end of the cavity. The opening 34 is positioned at a first end of the first housing portion 214. When an aerosol-generating article is received within the cavity, the aerosol-generating article and the aerosol-generating device 210 together form an aerosol-generating system.

The aerosol-generating device 210 further comprises an electric heater 22 and a controller 18 positioned within the first housing portion 214. The electric heater 22 comprises an inductor coil wound around the cavity. The controller 18 is configured to control a supply of power from WO 2023/001926 PCT/EP2022/07042l^1/O0i

- 25 - the first power supply 20 to the electric heater 22 via the first electrical contact 52 and the second electrical contact 62 when the second housing portion 216 is attached to the first housing portion 214. During use, the power supplied to the inductor coil of the electric heater 22 generates a varying magnetic field that inductively heats a susceptor in the aerosol-generating article received within the cavity 32 to generate an aerosol.

The aerosol-generating device 210 also comprises a closure member 242 positioned at the first end of the first housing portion 214. The closure member 242 is slidable along the first end of the first housing portion 214 between a closed position in which the closure member 242 at least partially covers the opening 34 and an open position in which the closure member 242 does not cover the opening 34. A rim 244 extends around a perimeter of the first end of the first housing portion 214 to protect the closure member 242. When the closure member 242 is in the open position, an aerosol-generating article can be inserted into the cavity 32. The closure member 242 comprises a raised closure member grip 248 to facilitate gripping of the closure member 242 by a user.

The aerosol-generating device 210 also comprises an interface for attaching the second housing portion 216 to the first housing portion 214. The interface comprises a slot 290 defined by a second end of the first housing portion 214 and configured to slidably receive a part of the second housing portion 216. The second electrical contact 62 on the second housing portion 216 engages with the first electrical contact 52 on the first housing portion 214 when the second housing portion 216 is attached to the first housing portion 214.

The interface also comprises a pair of first magnets 264 positioned on the first housing portion 214 inside the slot 290 and a second pair of magnets 274 positioned on a first end of the second housing portion 216. The first pair of magnets 264 is arranged to engage the second pair of magnets 274 when the second housing portion 216 is attached to the first housing portion 214 to retain the second housing portion 216 within the slot 290.

As shown in Figure 16, the second housing portion 216 is slidably detachable from the first housing portion 214. To detach the second housing portion 216 from the first housing portion 214, a release button 51 on the first housing portion 214 is pressed to disengage a latching element from the second housing portion 216. Pressing the release button 51 allows the second housing portion 216 to slide relative to the first housing portion 214 until the second housing portion 216 is fully detached from the first housing portion 214. To attach the second housing portion 216 to the first housing portion 214, the sliding operation is reversed until the latching element engages the second housing portion 216.

As shown in Figure 16, detaching the second housing portion 216 from the first housing portion 214 reveals an LED charge indicator 73 provided on the second housing portion 216. The LED charge indicator 73 is configured to provide a user with a visual indication of an amount of electrical charge stored within the first power supply 20. Figure 17 shows a front view of the aerosol-generating device 210 in a first configuration in which the second housing portion 216 is attached to the first housing portion 214. Figure 18 shows a front view of the aerosol-generating device 210 in a second configuration in which the second housing portion 216 has been replaced by a third housing portion 316. The aerosol generating device 210 is configured so that only one of the second housing portion 216 and the third housing portion 316 can be removably attached to the first housing portion at a time.

The third housing portion 316 is similar to the second housing portion 216 and comprises the same features as described with respect to the second housing portion 216. The third housing portion 316 differs from the second housing portion 216 by the electrical charge storage capacity of the power supply and the physical size of the third housing portion 316. In particular, the third housing portion 316 comprises a second power supply having a smaller electrical charge storage capacity than the first power supply 20 of the second housing portion 216. Therefore, the second power supply has a smaller physical size than the first power supply 20, which results in the third housing portion 316 having a smaller physical size than the second housing portion 216. Advantageously, the second housing portion 216 and the third housing portion 116 allow a user to choose between the first configuration shown in Figure 17 in which the aerosol-generating device 210 has a power supply having a larger electrical charge storage capacity, and the second configuration of Figure 18 in which the aerosol-generating device 210 has a smaller physical size.

Claims

1. An aerosol-generating device comprising: a housing comprising a first housing portion defining a chamber for receiving an aerosol forming substrate and a second housing portion, wherein the second housing portion is configured for removable attachment to the first housing portion; an electric heater positioned within the first housing portion; a power supply positioned within the second housing portion; and a controller positioned within the first housing portion, wherein the controller is configured to control a supply of power from the power supply to the electric heater when the second housing portion is attached to the first housing portion.

2. An aerosol-generating device according to claim 1, wherein the housing comprises an interface for attaching the second housing portion to the first housing portion.

3. An aerosol-generating device according to claim 2, wherein the interface comprises a slot arranged to receive at least a part of the first housing portion or at least a part of the second housing portion.

4. An aerosol-generating device according to claim 2 or 3, wherein the interface comprises a latching element arranged to retain the second housing portion in releasable attachment with the first housing portion, optionally wherein the interface further comprises a release element arranged to disengage the latching element.

5. An aerosol-generating device according to any of claims 2 to 4, wherein the interface comprises a first magnetic element on the first housing portion and a second magnetic element on the second housing portion, and wherein the second magnetic element is arranged to engage the first magnetic element when the second housing portion is attached to the first housing portion.

6. An aerosol-generating device according to any preceding claim, wherein the chamber defines a cavity for receiving an aerosol-generating article, wherein the first housing portion defines an opening at an end of the cavity, and wherein the opening is positioned at a first end of the first housing portion.

7. An aerosol-generating device according to claim 6, wherein the first housing portion comprises a second end opposite the first end, and wherein the second housing portion is configured for removable attachment to the second end of the first housing portion.

8. An aerosol-generating device according to claim 6, wherein the first housing portion comprises a second end opposite the first end and at least one sidewall extending between the first end and the second end, and wherein the second housing portion is configured for removable attachment to the at least one sidewall.

9. An aerosol-generating device according to any preceding claim, further comprising a first electrical contact positioned on the first housing portion and a second electrical contact positioned on the second housing portion, wherein the second electrical contact is configured to engage the first electrical contact when the second housing portion is attached to the first housing portion, optionally wherein the controller is configured to control the supply of power from the power supply to the electric heater via the first electrical contact and the second electrical contact when the second housing portion is attached to the first housing portion.

10. An aerosol-generating device according to any preceding claim, wherein the power supply is a rechargeable power supply, and wherein the aerosol-generating device comprises a charging circuit positioned within the second housing portion and configured to control a supply of power received from an external device for recharging the power supply.

11. An aerosol-generating device according to any preceding claim, wherein the power supply is a first power supply, wherein the aerosol-generating device further comprises a third housing portion configured for removable attachment to the first housing portion and a second power supply positioned within the third housing portion.

12. An aerosol-generating device according to claim 11 in combination with any of claims 2 to 5, wherein the interface is configured for attaching the third housing portion to the first housing portion.

13. An aerosol-generating device according to claim 11 or 12, wherein the first power supply has a first electrical charge storage capacity, wherein the second power supply has a second electrical charge storage capacity, and wherein the first electrical charge storage capacity is different to the second electrical charge storage capacity.

14. An aerosol-generating device according to claim 13, wherein a ratio of the first electrical charge storage capacity to the second electrical charge storage capacity is between 1.5 and 3, optionally between 1.5 and 2.5, optionally between 1.7 and 2.3.

15. An aerosol-generating device according to any of claims 11 to 14, wherein the second housing portion has a different size to the third housing portion.