Aerosol generation device with wireless charging

Abstract

An aerosol generation device 300, comprising a housing 310, a power storage means (330) arranged within the housing, a wireless power receiver 360 coupled to the power storage means and configured to receive a wireless power signal from a wireless power transmitter (420) to charge the power storage means from the received wireless power signal, and an indication unit 370 coupled to the wireless power receiver and configured to indicate to a user, based on a strength of the received wireless power signal, the degree of alignment of the wireless power receiver of the aerosol generation device with the wireless power transmitter when the aerosol generation device is being charged. The indication unit comprises an LED display in which different LEDs are illuminated and / or different colours of LED are provided to indicate the different degrees of alignment.

Description

[0001] Aerosol generation device with wireless charging

[0002] Technical Field

[0003] The present invention relates to an aerosol generation device. In particular, the invention relates to wireless charging in the aerosol generation device.

[0004] Background

[0005] Aerosol generation devices commonly found on the market comprise an aerosol generation unit for generating an aerosol for consumption by a user. Aerosol generation devices may be used as smoking alternatives or for oral medical delivery.

[0006] The use of reduced-risk or modified-risk nicotine products has grown rapidly in recent years as an alternative to the use of traditional nicotine products. Several types of aerosol-generating devices are currently available on the market, based on varying aerosolization techniques and aerosol-generating substrates. One example of aerosolgenerating devices employs heating, also known as “heat-not-burn” products and / or systems (HNB), to heat up an aerosol generating article or carrier to generate aerosol. Another type of aerosol generation device nebulises the aerosol-forming substrate to

[0007] An aerosol generation device generally comprises a rechargeable battery to power the generation unit. Therefore, there is a need to provide convenient and effective ways to charge rechargeable batteries.

[0008] Wireless charging technology has been known for some time and has been used to charge rechargeable batteries. However, the shape and size of aerosol generation devices provide unique challenges for wireless charging.

[0009] For example, the small shape and size of the device makes it difficult to properly align the wireless charging. Some solutions include providing a specialized wireless charging transmitter that has a specific shape to accommodate and align the device for proper charging. However, there is a need to provide charging without the need for a specialized wireless charging transmitter while ensuring proper alignment.

[0010] Therefore, there is a need for improved aerosol generation devices with wireless charging capabilities. Summary

[0011] The objective of the present invention is to provide an aerosol generation device and a system comprising an aerosol generation device as claimed in any one of claims 1 to 13, which overcome one or more of the above-mentioned problems of the prior art.

[0012] A first aspect of the invention provides an aerosol generation device, comprising: a housing, a power storage means arranged within the housing, a wireless power receiver coupled to the power storage means and configured to receive a wireless power signal from a wireless power transmitter to charge the power storage means from the received wireless power signal, an indication unit coupled to the wireless power receiver and configured to indicate to a user, based on a strength of the received wireless power signal, the degree of alignment of the wireless power receiver of the aerosol generation device with the wire-less power transmitter when the aerosol generation device is being charged.

[0013] The device of the first aspect enables the user to identify the degree of alignment of the wireless power receiver with the wireless power transmitter.

[0014] In a first implementation of the device according to the first aspect, at least a part of the indication unit is disposed on an exterior surface of the housing to enable the user to recognize the degree of alignment.

[0015] By placing a part of the indication unit on the exterior surface of the housing allows users to easily recognize the degree of alignment, enhancing the usability and efficiency of the device’s wireless charging process.

[0016] In a further implementation of the device according to the first aspect, the device further comprises a processor coupled to the wireless power receiver and the indication unit, wherein a comparison table is stored in the processor, the comparison table comprising an information on a relation between a strength of the received wireless power signal and the degree of alignment of the wireless power receiver with regard to the wireless power transmitter.

[0017] It is possible to easily identify the degree of alignment of the wireless power receiver with the wireless power transmitter by comparing the received wireless power receiver with the information in the comparison table. In a further implementation of the device according to the first aspect, the wireless power receiver is configured to charge the power storage means when the wireless power signal received by the wireless power receiver equals or exceeds a minimum level of the strength of the wireless power signal.

[0018] This ensures that the device does not waste resources attempting to charge in an inefficient alignment scenario, thereby optimizing energy use and prolonging battery life.

[0019] In a further implementation of the device according to the first aspect, the indication unit is configured to measure the strength of the received power signal based on voltage, power and / or current generated by the received wireless power signal.

[0020] This allows the determination of the strength of received power based on different parameters.

[0021] In a further implementation of the device according to the first aspect, the indication unit is configured to measure the strength of the received wireless power signal over time, and to indicate to a user a charging speed based on a result of the measurement.

[0022] This enables the unit to provide users with real-time feedback on the charging speed, which is determined based on the outcomes of these ongoing measurements, thereby enhancing user awareness and device functionality.

[0023] In a further implementation of the device according to the first aspect, the degree of alignment is the degree of alignment of the center of the wireless power receiver of the aerosol generation device with the center of the wireless power transmitter.

[0024] This allows for a highly accurate assessment of alignment, facilitating optimal charging efficiency.

[0025] In a further implementation of the device according to the first aspect, the indication unit is configured to provide: a first indication indicating that the wireless power receiver of the aerosol generation device is in a first degree of alignment with the wireless power transmitter, a second indication indicating that the wireless power receiver of the aerosol generation device is in a second degree of alignment with the wireless power transmitter, and a third indication indicating that the wireless power receiver of the aerosol generation device is in a third degree of alignment with the wireless power transmitter. This tiered feedback mechanism provides users with precise information to adjust the device’s position as needed to enhance charging outcomes.

[0026] In a further implementation of the device according to the first aspect, the indication unit determines: the wireless power receiver of the aerosol generation device to be in a first degree of alignment with the wireless power transmitter when the strength of the received wireless power signal is above a first threshold, the wireless power receiver of the aerosol generation device to be in a second degree of alignment with the wireless power transmitter when the strength of the received wireless power signal is above a second threshold but below the first threshold, and the wireless power receiver of the aerosol generation device to be in a third degree of alignment with the wireless power transmitter when the strength of the received wireless power signal is below the second threshold, or below the second threshold and above a third threshold, wherein the first threshold is greater than the second threshold which is greater than the third threshold.

[0027] The thresholds enable a precise and dynamic assessment of the device’s alignment and ensure that users are provided with feedback to optimize the device’s position on the charging pad, thereby enhancing the overall charging process and device usability.

[0028] In a further implementation of the device according to the first aspect, the indication unit further comprises an LED display configured to provide visual feedback to the user based on the degree of alignment, wherein different LEDs are illuminated, and / or different colors of the LED are provided to indicate the different degrees of alignment.

[0029] This visual feedback mechanism enables users to quickly discern the alignment quality and make necessary adjustments to enhance the charging efficiency, thereby improving the overall user experience and charging performance of the aerosol generation device.

[0030] In a further implementation of the device according to the first aspect, the indication unit further comprises a vibration mechanism configured to provide tactile feedback to the user based on the degree of alignment, wherein different vibration patterns can be provided to indicate the different degrees of alignment.

[0031] In a further implementation of the device according to the first aspect, the indication unit further comprises an audio feedback mechanism configured to emit sound based on the degree of alignment, wherein different sounds can be provided to indicate the different degrees of alignment. By employing such sound or vibration cues, the device enables users to ascertain the alignment quality without the need to visually monitor the device, facilitating a more accessible and versatile user experience, especially in contexts where visual observation of the LED display is inconvenient or impractical.

[0032] In a further implementation of the device according to the first aspect, the indication unit is further configured to indicate a level of charging.

[0033] It provides users with clear indications of the charging level, offering a direct insight into the charging progress and efficiency.

[0034] A second aspect of the invention provides a system comprising an aerosol generation device as claimed in any one of claims 1 to 13, and the wireless power transmitter.

[0035] The third aspect of the invention provides a method for charging an aerosol generation device, comprising: determining, based on a strength of the received wireless power signal, the degree of alignment of the wireless power receiver of the aerosol generation device with the wireless power transmitter when the aerosol generation device is being charged.

[0036] A further aspect of the invention refers to a computer-readable storage medium storing program code, the program code comprising instructions that, when executed by a processor cariy out the method of the second aspect or one of the implementations of the second aspect.

[0037] Brief Description of the Drawings

[0038] To illustrate the technical features of embodiments of the present invention more clearly, the accompanying drawings provided for describing the embodiments are introduced briefly in the following. The accompanying drawings in the following description are merely some embodiments of the present invention, modifications on these embodiments are possible without departing from the scope of the present invention as defined in the claims.

[0039] Fig. 1 shows an aerosol generation device according to the invention.

[0040] Fig. 2 is a schematic drawing of the wireless charging assembly.

[0041] Fig.3a shows an aerosol generation with wireless charging capabilities, and Fig 3b shows a wireless charging pad. Fig. 4a is a cross section of the transmission and receiving coils of the wireless charging in a first alignment, and Fig 4b is the device placed on the charging pad in a first alignment.

[0042] Fig. 5a is a cross section of the transmission and receiving coils of the wireless charging in a second alignment, and Fig 5b is the device placed on the charging pad in a second alignment.

[0043] Fig. 6a is a cross section of the transmission and receiving coils of the wireless charging in a third alignment, and Fig 6b is the device placed on the charging pad in a third alignment.

[0044] Fig. 7 is a flow chart describing the method of determining the alignment of the device with respect to the charging pad.

[0045] Detailed Description

[0046] The foregoing descriptions are only implementation manners of the present invention, the scope of the present invention is not limited to this. Any variations or replacements can be easily made through person skilled in the art. Therefore, the protection scope of the present invention should be subject to the protection scope of the attached claims.

[0047] Preferred embodiments of the present invention are described hereinafter and in conjunction with the accompanying drawings. For ease of understanding and brevity, certain features shown in the drawings have not been described in detail, and certain features have been omitted entirely for ease of understanding. As used herein, the term “aerosol generation device”, “E-cigarette”, or “electronic cigarette” may include an electronic cigarette system configured to deliver an aerosol to a user, including an aerosol for smoking. All the oriental terms, such as “up”, “down”, “upper” “down” “above”, “below”, etc., refers to the relative position of the components of the aerosol generation device 1 in its use position. Furthermore, terms such as “top”, “bottom”, “left”, “right” refers to relative positions based on the figures and illustrations.

[0048] Aerosol generation device

[0049] The aerosol generation device (also called a device) is used for oral aerosol delivery to a user, including medicinal use or for smoking. Aerosol is generated by means of an aerosol generating unit (e.g., a heater or atomizer or nebulizer) which generates aerosol that is delivered to the user for inhalation from an aerosol generating carrier. The device is portable and is capable of being held by the user, preferably with one hand. The aerosol may include a suspension of the precursor as one or more of a: solid particles; liquid droplets; gas. Said suspension may be in gas, including air. Aerosol herein may generally refer to / include a vapor. Aerosol may include one or more components of the precursor. The aerosol may have a particle size of 0.5-7 microns. The particle size maybe less than 10 or 7 microns. The precursor may comprise one or more of: nicotine; caffeine or another active component. The active component maybe carried with a carrier, which may be a liquid.

[0050] The aerosol-forming substrate (or substrate) may refer to one or more of a: liquid; solid; gel; other substance. The precursor may be processable by an atomizer of the apparatus to form an aerosol as defined herein. The carrier may include propylene glycol or glycerine.

[0051] The aerosol generation carrier (also referred to as consumable item, or article, or carrier) comprises an aerosol forming substrate. In one embodiment, the carrier may include a tobacco material in various forms, such as shredded tobacco and granulated tobacco, and / or the tobacco material may include tobacco leaf and / or reconstituted tobacco, such as sheets, strips, and foam, if it is suitable for a t-vapor. In another embodiment, the aerosol generation carrier may be in the form of a cartridge comprising an aerosol forming substrate.

[0052] Now, aerosol generation system 100 according to one embodiment of the invention, and as shown in Fig. 1, an isometric view of an example aerosol generation system too with the aerosol generation carrier 200 and aerosol generation device 300.

[0053] The components in the dotted line are schematic representations of components provided in the device.

[0054] The device comprises a housing 310, which acts as an external casing for the device. The housing is provided such that it can house the various other components of the aerosol generation device. The housing can be of any shape or size suitable to contain the internal components described in the aerosol generation device. For instance, it may be in a generally elongated shape. In some embodiments, the housing may be rectangular, tubular or cylindrical shape.

[0055] The elongated housing is provided with a first end, which is the left, as in the illustration, and a second end, which is the right end, as seen in Fig.i. During use, the user typically orients the aerosol generation device with the first end in a proximate position with respect to the user’s mouth, and the second end in a distal position with respect to the user’s mouth.

[0056] The device comprises an aerosol generation unit 320 which is capable of generating aerosol. In the embodiment, the aerosol generating unit is provided in the form of a heating unit that is capable of heating an aerosol generation carrier 200 to generate aerosol. The heating unit may comprise a heating chamber that is heated by a heating means. The heating chamber maybe shaped or sized in accordance with the shape or size of the aerosol generating carrier or the cartridge. In the embodiment, the heating chamber is a tubular heating chamber. However, the chamber may be provided in a form or other heating chamber shape in other embodiments, depending on the aerosol generation carrier.

[0057] The heating means in the heating unit may be any type of heater that is suitable to heat the aerosol generating substrate of the aerosol generation carrier directly or indirectly or by resistive or conductive heating. For instance, the heater may be a film heater comprising electrically conductive heating tracks or wire for resistive heating or by magnetic field making use of susceptors.The aerosol generation unit may be additionally provided with one or more additional layers, including insulation. The insulation that surrounds the heater may be provided and may partly or fully cover the heating chamber.

[0058] The device further comprises a power storage and / or power supply means 330, such as a battery, which is adapted to supply power to the electronic components of aerosol generation device, such as the heating unit. This enables the heater to generate the heat required to generate aerosol. The battery may be a rechargeable battery. The power storage means is arranged within the housing of the device.

[0059] The device is provided with a control unit 340, also called control circuitry that controls various elements of the aerosol generation device for its functioning. This may be provided as a printed circuit board (PCB), and electronically connected to the power unit.

[0060] The housing may be provided with an opening 350 (or aperture) at the end of the aerosol generation device. In the present embodiment, the opening is provided in the first end, which is at the proximate position to the user’s mouth when in use. The aerosol generating carrier can be inserted through the opening into the tubular heating chamber. The tubular heating chamber is then capable of at least partly containing the aerosol generation carrier, and to heat the portion of the aerosol generation carrier inserted in the heating chamber. In another embodiment, the aerosol carrier may be fully inserted or encompassed into the housing. In such an embodiment, the opening is an airflow pathway outlet and acts as a mouthpiece. The mouthpiece maybe capable of being attached to the housing. The aerosol carrier may be inserted through an opening after removing the mouthpiece or may be inserted through other means provided in housing.

[0061] Wireless charging assembly

[0062] Wireless charging is a method of transferring power through the air to charge electronic devices without the need for a physical connection using a wireless charging system. This may use any of inductive charging or radio frequency charging.

[0063] In the present invention, the aerosol generation device is provided with wireless charging capabilities to charge the power supply unit, which may be provided in addition to other charging capabilities. The power supply unit is provided with a rechargeable battery.

[0064] The wireless charging assembly comprises a power source, a transmitter, and a receiver section. The power source provides electrical energy that is to be transferred wirelessly to the device. This is usually connected to a standard electrical outlet, or a battery source such as a power storage unit.

[0065] A schematic illustration of the wireless charging assembly is shown in Fig. 2. The transmitter section 400, also called a charging station or pad, includes a wireless power transmitter 420. The wireless power transmitter may be in the form of a transmission coil or antenna. In inductive and resonant systems, a coil of wire generates an electromagnetic field when an electric current passes through it. In RF systems, this role is played by an antenna that emits radio waves. To accommodate various design requirements based on the shape of the devices, and / or maximize the efficiency of the electromagnetic field or radio wave distribution, the transmission coil or antenna within the transmitter section 400 is constructed in any suitable shape. Preferably, the coil or antenna of the wireless power transmitter is round or oval shaped. IO

[0066] The transmitter section 400 may additionally comprise transmitter control circuit 410 that manages the flow of electricity through the coil or antenna, controlling the frequency and magnitude of the output to optimize charging efficiency and safety. Depending on the system, the transmitter section may also include a power conversion unit to converts the incoming electrical power to the required form for wireless transmission (AC to DC, or vice versa, depending on the system). The control circuit of the transmitter section is provided in the charging station.

[0067] The receiver section, which is provided in the device being charged, comprises a receiving coil or antenna. In an inductive or resonant system, a coil in the device receives the electromagnetic field and converts it back into electrical current. In RF systems, an antenna tuned to the transmitter’s frequency is used to capture the radio waves. To accommodate various design requirements based on the shape of the devices, and / or maximize the efficiency of the electromagnetic field or radio wave distribution, the reciever coil or antenna within the reciever section is constructed in any suitable shape. Preferably, the coil or antenna of the wireless power reciever is round or oval shaped.

[0068] Fig. 3a, shows an example aerosol generation device with wireless charging capability, and Fig.sb shows an example transmitter section 400, also called a charging station or pad.

[0069] In the present invention, to provide wireless charging capability, the aerosol generation device has a wireless power receiver 360 comprising a coil or antenna array 361 capable of receiving power in a wireless manner. In addition to the comprising a coil or antenna pattern 361, the wireless power receiver 360 may further comprise a magnetic shielding material 362, and a connection means 363.

[0070] The receiver section may additionally comprise control circuitry, such as a rectifier circuit, and a battery charging circuit. The rectifier circuit converts the alternating current (AC) induced in the receiving coil into direct current (DC), which is usable by the device’s battery. The battery charging circuit manages the received power and uses it to charge the battery, ensuring proper charging without damaging the battery.

[0071] The device may further comprise rectification and / or voltage regulation components to convert the induced alternating current (AC) from the coil or antenna into direct current (DC), and / or regulate the voltage. The rectification and / or voltage regulation components may be a part of the control unit 340 of the device, or may be provided as an additional circuitry. The wireless power receiver is coupled to the power storage means and configured to receive a wireless power signal from a wireless power transmitter to charge the power storage means from the received wireless power signal.

[0072] The assembly may include a communication capability the transmitter and receiver, which can be used for tasks like identifying the device, monitoring charging progress, and ensuring compatibility.

[0073] The device of the invention comprises control circuitry in communication with the wireless power receiver, wherein the control circuitry is configured to manage the charging of the power storage means. The control circuitry may be a part of the control unit 340 of the device or may be provided as an additional circuitry.

[0074] The control circuitry may be configured to manage a wireless charging process. The control circuitry is capable of monitoring the state of charge of the power storage means and controlling the power transfer, if necessary, based on the state of the charging. It is also possible to provide overheat protection mechanisms configured to control power transfer or initiate cooling measures based on monitoring by the control circuitry. The device may further comprise an indicator 370 for providing visual or audible feedback based on information from the control circuitry. For instance, an indication maybe provided based on the charging status of the power storage means.

[0075] Due to the generally compact size of the aerosol generation device and the requirement that such a device is held by the hand of the user, providing wireless charging on an aerosol generation device introduces unique challenges.

[0076] For instance, for optimal wireless charging, the wireless power receiver should be correctly aligned with the wireless power transmitter. The maximum power that a wireless charging system can transmit largely depends on how well the receiving and transmitting coils are aligned.

[0077] Since the process of wireless charging involves creating a magnetic field, the strength and efficiency of this magnetic coupling are dependent on the spatial alignment of the two coils. When the centers of the transmitter and receiver coils are perfectly aligned, the magnetic field can induce the maximum possible current in the receiver coil, leading to efficient charging. Therefore, the closer the alignment of the centers, the more effective the energy transfer. This is because the magnetic flux, which is essential for inducing current in the receiver coil, is strongest and most concentrated at the center of the transmitter coil. Deviations from this optimal alignment result in a weaker magnetic coupling and, consequently, less efficient energy transfer. Proper alignment minimizes energy loss and electromagnetic interference. Misalignment can lead to a significant portion of the electromagnetic field missing the receiver coil, which not only reduces charging efficiency but can also cause unwanted electromagnetic interference.

[0078] Contrary to large devices such as mobile phones, small devices like the aerosol device have a smaller surface area. Therefore, the wireless power receiver on such devices also has a small surface area. This makes it difficult to achieve a good placement and overlap between the wireless charging transmitter and the wireless charging receiver.

[0079] Moreover, the small size of the wireless receiver also affects the charging time, and thus, any lack of alignment between the transmitter and the receiver further increases the charging time. Therefore, there is a need to ensure proper alignment of the receiver with the transmitter.

[0080] Some charging pads incorporate physical features, such as grooves or markings, that guide users on where to place their device for optimal alignment. However, this requires that the user is limited to using a specialised charging pad, which has to be designed for a specific design of the aerosol device. Therefore, there is a need to ensure proper alignment of the receiver with the transmitter without a need for a specialised charging pad.

[0081] It was identified that it is possible to improve the alignment of the receiver with the transmitter by providing guidance to the user. In particular, by providing an indication to the user on the degree of alignment, the user is actively guided towards changing the position of the device to ensure proper alignment.

[0082] The aerosol generation device is provided with an indication unit that is capable of indicating to the user the alignment of the wireless power receiver of the aerosol generation device with the wireless power transmitter. In particular, the indication unit is capable of indicating the degree of alignment of the wireless power receiver of the aerosol generation device with the wireless power transmitter.

[0083] The degree of alignment is the degree of alignment of the center of the wireless power receiver of the aerosol generation device with the center of the wireless power transmitter. This indicates how precisely the center of the device’s wireless power receiver is positioned relative to the center of the wireless power transmitter on the charging pad. That is, since both the wireless power transmitter and wireless power receiver are provided in the form of a coil or antenna, the alignment between the transmitter and the receiver can be determined based on how aligned the center of the coils or antenna are with respect to each other. Furthermore, the coils maybe of the same size or different to each other. Therefore, the overlap of the coils is also considered when determining the degree of alignment, as will be described later.

[0084] It was further identified that based on the strength of the received power signal, it is possible to determine the degree of alignment of the wireless power receiver of the aerosol generation device with the wireless power transmitter when the device is being charged. That is, when the device is placed on the charging pad, it begins the charging process by activating its wireless power receiver. This receiver is designed to capture the electromagnetic field generated by the charging pad’s transmitter coil. The power receiver then converts this electromagnetic energy into electrical energy, effectively charging the device’s battery. The device measures the received power in real time.

[0085] The power can be determined based on voltage, power and / or current generated by the received wireless power signal. This can be performed by the receiver section. For instance, the control circuitry, rectifier circuit, and rectification and / or voltage regulation components may assist in determining the actual power received with the voltage and current information.

[0086] Furthermore, it was identified that there is a correlation between the degree of alignment and the power received by the device. Therefore, using the correlation, it is possible to determine the degree of alignment based on the power received by the device. Even in cases where the center does not align with each other, the coils may still overlap with each other and thus can be charged. This is also the case when the size of the coils is not the same. In such scenarios where, even if the coils are not perfectly centered, they may still fully overlap. Even in such cases, as there is an overlap of the coils, the degree of alignment is in correlation with the power received. The degree of alignment is thus based on the distance between the centers of the two coils relative to the size of the coil.

[0087] The device further comprises a memory unit, such as a processor, to store information. The memory unit may be a non-volatile memory component within the device. This could be part of the device’s main processor, such as the control unit, or another microcontroller that oversees the charging process. The processor may be coupled to the wireless power receiver and the indication unit. The processor is capable of storing information on the strength of the power signal that is capable of being received by the device. In addition, the processor stores a comparison table with information on the relation between the strength of the received wireless power signal and the degree of alignment of the wireless power receiver with regard to the wireless power transmitter.

[0088] The comparison table encompasses a range of information about the power and the degree of alignment. For instance, the information on the ideal power the device is expected to receive when it is perfectly aligned with the charging pad. This represents the optimal condition and serves as the benchmark for maximum charging efficiency.

[0089] Additionally, the table may also include details on the expected power reception in different degrees of alignment between the device and the charging pad.

[0090] These may be predefined values representing the expected power reception under various conditions, including perfect alignment and various degrees of misalignment. These values depend on the type of the wireless power receiver and can be stored in advance during the manufacturing process or set or reset at a later stage.

[0091] The comparison table can be updated at a later date. This may be through updates to refine the accuracy of the alignment feedback as more data is collected on the device’s charging behaviour over time.

[0092] The comparison table may have information about the degree of alignment and the expected power received in such degree of alignment. The comparison table may categorize the degree of alignment of the receiver and the transmitter into distinct percentages based on the degree of alignment of the center and / or overlap of the receiver and transmitter. For instance, a ioo% degree of alignment indicates that the center of the transmitter and receiver are perfectly aligned with each other. Each associated degree of alignment is then categorized with an expected value of power reception. These percentages provide a precise, quantifiable measure of alignment quality, enabling the system to assess power transfer efficiency at any given position on the charging pad. For each alignment percentage, the table specifies an expected value of power reception, which represents the anticipated efficiency of power transfer at that particular degree of alignment. Based on the information on the degree of alignment and the expected power, it is also possible to categorize the degree of alignment into particular ranges of the degrees of alignment. For instance, the degree of alignment can be classified into three different degrees based on the received power.

[0093] In an embodiment of the invention, the degree of alignment is classified into a first, second, and third degree of alignment, which may represent a good, a moderate, or a poor alignment of the receiver with the transmitter, respectively.

[0094] The first degree of alignment of the receiver with the wireless power transmitter represents a good alignment and, thus, an optimal charging condition. The first degree of alignment may be set as range, for instance, when the degree of alignment between the transmitter and the receiver is above 8o%. The range can be flexibly set, either during manufacturing or at a later stage. The first degree of alignment may also be determined based on the strength of the received wireless power signal. For instance, if the strength of the received wireless power signal surpasses the first threshold, it can be determined as indicating a good alignment scenario, where good power transfer efficiency is attained.

[0095] Fig. 4a shows a schematic cross-section of the transmission and receiving coils for wireless charging with first or optimal alignment. Fig. 4b shows the device placed on the charging pad ina first or optimal alignment. In this case, the center of the coil or antenna of the wireless power receiver 360 is aligned (or substantially aligned) with the coil or antenna of the wireless power transmitter 420.

[0096] The second degree of alignment of the receiver with the wireless power transmitter represents a moderate alignment, where the electromagnetic coupling is sufficient for charging but not at an optimal efficiency. The second degree of alignment may be defined as scenarios where the degree of alignment between the transmitter and receiver falls within a range, for example, between 50% and 80%. The second degree of alignment may also be determined based on the strength of the received wireless power signal. For instance, if the received wireless power signal is above a second threshold but below the first threshold, it may indicate that while the device is receiving enough power to charge, it is not doing so at the optimal efficiency possible if better aligned.

[0097] Fig. 5a shows a schematic cross-section of the transmission and receiving coils for wireless charging with a second or moderate alignment. Fig. 5b shows the device placed on the charging pad in a second or moderate alignment. In this case, the center of the coil or antenna of the wireless power receiver 360 is not fully aligned but moderately aligned with the coil or antenna of the wireless power transmitter 420.

[0098] The third degree of alignment of the receiver with the wireless power transmitter represents a poor alignment, where the coupling is significantly reduced, leading to inefficient charging. The third degree of alignment may be defined when the degree of alignment between the transmitter and receiver is below 50%. Similarly, the third degree of alignment may also be based on signal strength determined when the received wireless power signal falls below the second threshold. This condition suggests that the device is poorly aligned with the transmitter, resulting in suboptimal charging efficiency and potentially longer charging times.

[0099] Fig. 6a shows a schematic cross-section of the transmission and receiving coils for wireless charging with a third or poor alignment. Fig. 6b shows the device placed on the charging pad in a third or poor alignment. In this case, the center of the coil or antenna of the wireless power receiver 360 is poorly aligned with the coil or antenna of the wireless power transmitter 420.

[0100] Additionally, this third degree of alignment may also encompass a scenario where the signal strength is not only below the second threshold but also remains above a third threshold. The third threshold may represent the minimum power reception needed for charging.

[0101] The device is configured to charging only when the strength of the received wireless power signal is above (or equal to) a minimum power value. Therefore, the wireless power receiver may charge the power storage, which means that the wireless power signal received by the wireless power receiver equals or exceeds a minimum level of the strength of the wireless power signal. This ensures that the device does not waste resources attempting to charge in an inefficient alignment scenario, thereby optimizing energy use and prolonging battery life.

[0102] The first, second, and third thresholds may be provided as a numerical value defining the received power with the following relationship the first threshold is greater than the second threshold, which is greater than the third threshold.

[0103] The device has an indication unit, or indicator 370, to indicate the information relating to the degree of alignment to a user. That is, with the assistance of the control circuitry coupled to the receiver circuit, it is possible to determine the strength of the received wireless signal and, in effect, the degree of alignment.

[0104] The processor compares the actual received power with the data in the comparison table by analyzing how the actual power reception is against the comparison table. The processor can determine the degree of alignment quality of the device on the charging pad.

[0105] In an embodiment, the indication unit is capable of determining if the wireless power receiver of the aerosol generation device is in a first degree of alignment with the wireless power transmitter when the strength of the received wireless power signal is above the first threshold. The indication unit is further capable of determining if the wireless power receiver of the aerosol generation device is in a second degree of alignment with the wireless power transmitter when the strength of the received wireless power signal is above a second threshold but below the first threshold. Finally, the wireless power receiver of the aerosol generation device is to be in a third degree of alignment with the wireless power transmitter when the strength of the received wireless power signal is below the second threshold, or below the second threshold and above a third threshold,

[0106] It should be appreciated that while the foregoing description only indicates three distinct degrees of alignment— namely, a first, second, and third degree of alignment, characterized respectively by the strength of the received wireless power signal, many intermediate or additional degrees of alignment can be defined. For instance, the ranges may be subdivided into five degrees of alignment: optimal alignment, high- efficiency alignment, moderate efficiency alignment, low-efficiency alignment, and poor alignment.

[0107] The indication unit or indicator has different indications depending on the degree of alignment. For instance, the indication unit can provide a first indication indicating that the wireless power receiver of the aerosol generation device is in a first degree of alignment with the wireless power transmitter. The indication unit can provide a second indication indicating that the wireless power receiver of the aerosol generation device is in a second degree of alignment with the wireless power transmitter. The indication unit can provide a third indication indicating that the wireless power receiver of the aerosol generation device is in a third degree of alignment with the wireless power transmitter. In an embodiment, the indicator is a visual indicator, such as an LED display. The display may indicate the degree of alignment, either as a value or as a visual cue. For instance, the LED display may include a plurality of LED may be provided and different LEDs may be illuminated to indicate the different degrees of alignment.

[0108] The LED may be a multi-color LED configured to offer visual feedback by displaying different colors, each corresponding to a specific degree of alignment, thereby enabling users to visually assess the alignment status.

[0109] For instance, the first color (e.g., green) of the indicator may indicate the transmitter and receiver are in the first degree of alignment, indicating high charging efficiency or speed. This green indication confirms that the device is optimally aligned with the wireless power transmitter, ensuring the most efficient charging scenario.

[0110] The second colour (e.g., yellow or orange) of the indicator may indicate that the device has achieved a second degree of alignment, denoted by moderate charging efficiency or speed. This suggests that while the device is reasonably aligned with the transmitter, positional adjustments could further optimize the charging process.

[0111] The third colour (e.g., red) of the indicator may indicate that the device is in the third degree of alignment, characterized by low charging efficiency or speed due to suboptimal alignment. This red signal prompts the user that, although charging is underway, the alignment is necessary to improve the charging efficiency.

[0112] Finally, an additional indication colour (e.g., grey orblinking) maybe provided, which may indicate that while the device is recognized to be within the charging pad area, it is not correctly positioned for charging to commence. This may serve as an alert for the user to initiate adjustments to the device’s placement, aiming to achieve a higher degree of alignment.

[0113] In case of a visual indicator, at least a part of the indication unit is disposed on an exterior surface of the housing to enable the user to recognize the degree of alignment.

[0114] In another embodiment, the indicator is an auditoiy feedback mechanism, such as a speaker. This unit is designed to indicate the degree of alignment by providing sound or vibration output. For auditory feedback, the sound unit may emit distinct tones or sequences of sounds, each uniquely associated with a specific degree of alignment. For instance, a long uninterrupted beep might indicate poor alignment (similar to red LED), while long beeps may indicate moderate alignment (similar to yellow / orange LED indication), whereas a single tone could signify optimal alignment (akin to the green LED indication).

[0115] Similarly, for tactile feedback, the vibration unit could generate different vibration patterns to convey the alignment status. For instance, a high-frequency vibration might correspond to a poor or first degree of alignment, urging the user to adjust the device’s position, and a low-frequency vibration could denote optimal alignment.

[0116] By employing such sound or vibration cues, the device enables users to ascertain the alignment quality without the need to visually monitor the device, facilitating a more accessible and versatile user experience, especially in contexts where visual observation of the LED display is inconvenient or impractical.

[0117] The device is capable of detecting the received power and indicating it to the user in real-time. As the user adjusts the device’s position, the LED display responds in real time, transitioning through colors or patterns that correspond to different degrees of alignment. For instance, the display might shift from red to yellow / orange and finally to green as the device moves from poor to optimal alignment. This visual feedback provides an immediate and clear indication of the charging efficiency, enabling users to visually gauge and adjust the device’s placement for maximum charging efficiency.

[0118] Similarly, as the user adjusts the position of the device on the charging pad, the sound unit responds instantly, changing tones or sequences to reflect the current alignment status. For example, a fluctuating tone could signal that the device is moving towards or away from optimal alignment, while a harmonious, steady tone confirms that optimal alignment has been achieved. Similarly, the device can incorporate a vibration feedback mechanism that provides real-time tactile cues to the user. As the device approaches optimal alignment, the vibration pattern could change from intermittent and erratic to smooth and continuous, offering a tangible sense of progress toward efficient charging. This immediate response encourages users to fine-tune the device’s position until the most effective vibration pattern is felt, signaling optimal alignment.

[0119] This real-time auditory or vibrational feedback allows users to adjust the device’s placement based on vibrational or sound cues, making the charging process more efficient and user-friendly, especially in visually obstructed or low-light conditions. Method of determining the alignment of the device.

[0120] Now, the method of determining the alignment is disclosed, with reference Fig. 7, which provides an example of determining the alignment of the device with respect to the charging pad.

[0121] In step 502, when the device is placed on the charging pad, the strength of the wireless power signal received by the device’s power receiver is determined. The strength of the received power is determined by using the voltage, power, and / or current generated by the received wireless power signal, which is performed by the receiver section. For instance, the control circuitry, rectifier circuit, and rectification and / or voltage regulation components may assist in determining the actual power received with the voltage and current information. If the wireless power signal received by the wireless power receiver equals or exceeds a minimum level of the strength of the wireless power signal power, the wireless power receiver charges the power storage means.

[0122] In step 504, the power signal is compared with the information on the comparison table to determine the degree of alignment. Based on the comparison, it can determine the degree of alignment. For instance, it is possible to determine if the device is one of the first degree of alignment, second degree of alignment, or the third degree of alignment, with the charging pad.

[0123] Specifically, if the wireless power receiver of the aerosol generation device is in a first degree of alignment with the wireless power transmitter when the strength of the received wireless power signal is above a first threshold, and the wireless power receiver of the aerosol generation device to be in a second degree of alignment with the wireless power transmitter when the strength of the received wireless power signal is above a second threshold but below the first threshold, and the wireless power receiver of the aerosol generation device to be in a third degree of alignment with the wireless power transmitter when the strength of the received wireless power signal is below the second threshold, or below the second threshold and above a third threshold. If the wireless power signal received by the wireless power receiver does not equal or exceed a minimum level of the strength of the wireless power signal power, it does not charge the battery.

[0124] In step 506, the indicator provides an indication based on the degree of alignment as determined in the previous step. The indicator provides a first indication indicating that the wireless power receiver of the aerosol generation device is in a first degree of alignment with the wireless power transmitter, a second indication indicating that the wireless power receiver of the aerosol generation device is in a second degree of alignment with the wireless power transmitter, and a third indication indicating that the wireless power receiver of the aerosol generation device is in a third degree of alignment with the wireless power transmitter.

[0125] The indicator may provide a further indication to indicate that the power received is below the minimum level. The third threshold may represent the minimum power reception needed for charging.

[0126] Steps 502 to 506 may be repeated in order to provide a real-time assessment and indication of the degree of alignment. This enables the user to obtain feedback and guides the user in aligning the device.

[0127] Thus, it is possible to improve the alignment by providing the user with information about the alignment status so that necessary adjustments can be made for optimal charging. This enhances charging efficiency and contributes to an intuitive mechanism by providing improved human-machine interaction with the device.

[0128] List of reference signs ioo aerosol generation system

[0129] 200 aerosol generation carrier

[0130] 300 aerosol generation device

[0131] 310 housing

[0132] 320 aerosol generation unit

[0133] 340 control unit

[0134] 350 opening

[0135] 360 wireless power receiver

[0136] 361 pattern

[0137] 362 magnetic shielding material

[0138] 370 indicator

[0139] 400 transmitter section

[0140] 420 wireless power transmitter

Claims

PCT Claims (clean)1. An aerosol generation device, comprising: a housing, a power storage means arranged within the housing, a wireless power receiver coupled to the power storage means and configured to receive a wireless power signal from a wireless power transmitter to charge the power storage means from the received wireless power signal, and an indication unit coupled to the wireless power receiver and configured to indicate to a user, based on a strength of the received wireless power signal, the degree of alignment of the wireless power receiver of the aerosol generation device with the wireless power transmitter when the aerosol generation device is being charged, wherein the indication unit further comprises an LED display configured to provide visual feedback to the user based on the degree of alignment, wherein different LEDs are illuminated, and / or different colors of the LED are provided to indicate the different degrees of alignment.

2. The aerosol generation device according to the preceding claim, wherein at least a part of the indication unit is disposed on an exterior surface of the housing to enable the user to recognize the degree of alignment.

3. The aerosol generation device according to any one of the preceding claims, further comprising a processor coupled to the wireless power receiver and the indication unit, wherein a comparison table is stored in the processor, the comparison table comprising an information on a relation between a strength of the received wireless power signal and the degree of alignment of the wireless power receiver with regard to the wireless power transmitter.

4. The aerosol generation device according to any one of the preceding claims, wherein the wireless power receiver is configured to charge the power storage means when the wireless power signal received by the wireless power receiver equals or exceeds a minimum level of the strength of the wireless power signal.

5. The aerosol generation device according to any one of the preceding claims, wherein the indication unit is configured to measure the strength of the received powersignal based on voltage, power and / or current generated by the received wireless power signal.

6. The aerosol generation device according to any one of the preceding claims, wherein the indication unit is configured to measure the strength of the received wireless power signal over time, and to indicate to a user a charging speed based on a result of the measurement.

7. The aerosol generation device according to any of the preceding claims, wherein the degree of alignment is the degree of alignment of the center of the wireless power receiver of the aerosol generation device with the center of the wireless power transmitter.

8. The aerosol generation device according to any of the preceding claims, wherein the indication unit is configured to provide: a first indication indicating that the wireless power receiver of the aerosol generation device is in a first degree of alignment with the wireless power transmitter, a second indication indicating that the wireless power receiver of the aerosol generation device is in a second degree of alignment with the wireless power transmitter, and a third indication indicating that the wireless power receiver of the aerosol generation device is in a third degree of alignment with the wireless power transmitter.

9. The aerosol generation device according to any of the preceding claims, wherein the indication unit determines: the wireless power receiver of the aerosol generation device to be in a first degree of alignment with the wireless power transmitter when the strength of the received wireless power signal is above a first threshold, the wireless power receiver of the aerosol generation device to be in a second degree of alignment with the wireless power transmitter when the strength of the received wireless power signal is above a second threshold but below the first threshold, and the wireless power receiver of the aerosol generation device to be in a third degree of alignment with the wireless power transmitter when the strength of the received wireless power signal is below the second threshold, or below the second threshold and above a third threshold,wherein the first threshold is greater than the second threshold which is greater than the third threshold. io. The aerosol generation device according to any one of the preceding claims, wherein the indication unit further comprises a vibration mechanism configured to provide tactile feedback to the user based on the degree of alignment, wherein different vibration patterns can be provided to indicate the different degrees of alignment. n. The aerosol generation device according to any one of the preceding claims, wherein the indication unit further comprises an audio feedback mechanism configured to emit sound based on the degree of alignment, wherein different sounds can be provided to indicate the different degrees of alignment.

12. The aerosol generation device according to any one of the preceding claims, wherein the indication unit is further configured to indicate a level of charging.

13. A system comprising an aerosol generation device as claimed in any one of claims 1 to 12, and the wireless power transmitter.

14. A method for charging an aerosol generation device, comprising: determining, based on a strength of the received wireless power signal, the degree of alignment of the wireless power receiver of the aerosol generation device with the wireless power transmitter when the aerosol generation device is being charged, and indicating to the user based on the degree of alignment, a visual feedback, wherein different LEDs are illuminated, and / or different colors of the LED are provided to indicate the different degrees of alignment.

15. The method according to claim 14, further comprising: charging the power storage means when the wireless power signal received by the wireless power receiver equals or exceeds a minimum level of the strength of the wireless power signal.

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