Power supply unit for aerosol-generating device and aerosol-generating device

Abstract

The suction device (100) comprises a power supply part (111C) for supplying power to a heating unit (121C), a main board (50) and a power supply board (71). The power supply board (71) is provided with a positive electrode tab connection portion (711a) connected to the positive electrode tab (111a), a positive electrode contact connection portion (784) connected to the contact of the main board (50), and a first positive electrode conductive region (781) and a second positive electrode conductive region (782) connecting the positive electrode tab connection portion (711a) and the positive electrode contact connection portion (784). The widths (W1, W2) of the first positive electrode conductive region (781) and the second positive electrode conductive region (782) are both greater than the width (Wa) of the positive electrode tab connection part (711a).

Description

Technical Field

[0001] The present disclosure relates to a power supply unit for an aerosol generating device and an aerosol generating device. Background Art

[0002] An aerosol generating device houses a power source, a heating unit, a plurality of sensors, a circuit board for mounting the sensors, or a control device, etc. (e.g., PTL 1) inside a housing. The size of the aerosol generating device (such as a heat-not-burn device) is preferably set to fit in the user's hand.

[0003] Citation List

[0004] Patent Documents

[0005] [PTL 1] Japanese Patent Application Publication No. 2021-83383 A1 Summary of the Invention

[0006] Technical Problem

[0007] In an aerosol generating device, an aerosol source is rapidly heated, and thus, for a small-sized device, the current supplied from the power source is high. Therefore, it is necessary to ensure that power can be appropriately supplied to the heating unit.

[0008] The present disclosure provides a power supply unit that can appropriately perform power supply for an aerosol generating device and an aerosol generating device.

[0009] Solution to the Problem

[0010] A power supply unit for an aerosol generating device according to the present disclosure includes:

[0011] A power source that supplies power to a heating unit for heating an aerosol source;

[0012] A control device that controls the heating unit;

[0013] A first board for mounting the control device; and

[0014] A second board connected to the power source and the first board, wherein

[0015] the second board includes

[0016] An electrode connection portion connected to an electrode of the power source,

[0017] A contact connection portion connected to a contact of the first board, and

[0018] A conductive region connecting the electrode connection portion and the contact connection portion, wherein

[0019] The width of the conductive region is wider than the width of the electrode connection portion.

[0020] The aerosol generating device of the present disclosure includes:

[0021] A power source;

[0022] A heating unit that consumes electric power supplied from the power source to heat an aerosol source;

[0023] A control device that controls the heating unit;

[0024] A first board for mounting the control device; and

[0025] A second board connected to the power source and the first board, wherein

[0026] The second board includes

[0027] An electrode connection portion connected to an electrode of the power source,

[0028] A contact connection portion connected to a contact of the first board, and

[0029] A conductive region connecting the electrode connection portion and the contact connection portion, wherein

[0030] The width of the conductive region is wider than the width of the electrode connection portion.

[0031] Advantageous effects of the present invention

[0032] According to the present disclosure, due to the wide conductive region, even if a large current flows out from the power source via the electrode connection, current concentration in the second board can be avoided, and power can be appropriately supplied from the power source. Description of the drawings

[0033] Figure 1 is a schematic diagram illustrating a first configuration example (inhalation device 100A) of an inhalation device.

[0034] Figure 2 is a schematic diagram illustrating a second configuration example (inhalation device 100B) of an inhalation device.

[0035] Figure 3 is an overall perspective view of an inhalation device 100 according to an embodiment of the present disclosure.

[0036] Figure 4 is a perspective view seen from the right front side of the internal unit 10.

[0037] Figure 5 ​​​​​is a perspective view seen from the left front side of the internal unit 10.

[0038] Figure 6 is an exploded perspective view of the internal unit 10.

[0039] Figure 7 is a sectional perspective view of the heater assembly 30.

[0040] Figure 8 is a block diagram schematically showing the electrical connections of the main components of the internal unit 10.

[0041] Figure 9 is a sectional view of the power supply board 71.

[0042] Figure 10 is a view of the first conductive layer L1 and the second conductive layer L2 of the power supply board 71 seen from the front.

[0043] Figure 11 is a view of the first conductive layer L1 and the second conductive layer L2 of the power supply board 71 of a variant example seen from the front.

[0044] Figure 12 is a diagram illustrating an example of the positive electrode tab 111a connected to the positive electrode tab connection portion 711a.

[0045] Figure 13 is a diagram illustrating another example of the positive electrode tab 111a connected to the positive electrode tab connection portion 711a. Detailed Description

[0046] The following is a description of an inhalation device, a control method, and a program according to an embodiment of the present disclosure. First, two configuration examples (a first configuration example and a second configuration example) to which the configuration of the inhalation device according to the present disclosure can be applied are described. It should be noted that hereinafter, the same or similar reference numerals may be given to the same or similar elements, and the description thereof may be appropriately omitted or simplified.

[0047] <<1. Configuration Example of Inhalation Device>>

[0048] An inhalation device is a device for generating a substance to be inhaled by a user. Hereinafter, the substance generated by the inhalation device is described as an aerosol. Alternatively, the substance generated by the inhalation device may be a gas.

[0049] (1)First Configuration Example

[0050] Figure 1 is a schematic diagram illustrating the first configuration example of the inhalation device. As Figure 1 ​​​​​​​​As shown, the inhalation device 100A according to this configuration example includes a power supply unit 110, a cartridge 120, and a flavored cartridge 130. The power supply unit 110 includes a power supply part 111A, a sensor unit 112A, a notification unit 113B, a memory unit 114A, a communication unit 115A, and a control unit 116A. The cartridge 120 includes a heating unit 121A, a liquid guiding part 122, and a liquid storage part 123. The flavored cartridge 130 includes a flavor source 131 and a mouthpiece 124. An air flow path 180 is formed in the cartridge 120 and the flavored cartridge 130.

[0051] The power supply part 111A stores electric power. The power supply part 111A then supplies electric power to each component of the inhalation device 100A according to the control executed by the control unit 116A. The power supply part 111A may be configured by, for example, a rechargeable battery (such as a lithium-ion secondary battery).

[0052] The sensor unit 112A acquires various types of information related to the inhalation device 100A. As an example, the sensor unit 112A is configured by a pressure sensor (such as a condenser microphone, a flow rate sensor, or a temperature sensor, etc.), and acquires values associated with the user's inhalation. As another example, the sensor unit 112A is configured by an input device (such as a button or a switch) for receiving information input from the user.

[0053] The notification unit 113A notifies the user of information. The information notified to the user by the notification unit 113A is various, including, for example, the SOC (state of charge) indicating the power state of the power supply part 111A, the preheating time during inhalation, the inhalation period, the possible inhalation time, etc. For example, the notification unit 113A may be configured by a light-emitting device that emits light, a display device that displays an image, a sound output device that outputs sound, or a vibration device that can vibrate, etc.

[0054] The memory unit 114A stores various types of information for the operation of the inhalation device 100A. The memory unit 114A may be configured by, for example, a non-volatile storage medium (such as a flash memory).

[0055] The communication unit 115A is a communication interface capable of performing communication according to any wired or wireless communication standard. Examples of communication standards that can be used include standards adopting Wi-Fi (registered trademark), Bluetooth (registered trademark), Bluetooth Low Energy (BLE) (registered trademark), Near Field Communication (NFC), or Low Power Wide Area (LPWA), etc.

[0056] The control unit 116A functions as an arithmetic processing device and a control device, and controls the overall operation within the inhalation device 100A according to various programs. For example, the control unit 116A is implemented by a central processing unit (CPU) or an electronic circuit such as a microprocessor, etc.

[0057] The liquid storage section 123 stores an aerosol source. The aerosol source is atomized to generate an aerosol. For example, the aerosol source is a polyol (such as glycerol or propylene glycol) or a liquid (such as water). The aerosol source may include tobacco-derived or non-tobacco-derived flavor components. If the inhalation device 100A is a medical inhaler (such as a nebulizer), the aerosol source may include a drug.

[0058] The liquid guiding section 122 guides and holds the aerosol source from the liquid storage section 123, and the aerosol source is the liquid stored in the liquid storage section 123. The liquid guiding section 122 is, for example, a wick formed by twisting a fibrous material (such as glass fiber) or a porous material (such as porous ceramic). In this case, the aerosol source stored in the liquid storage section 123 is guided by the capillary action of the wick.

[0059] The heating unit 121A heats the aerosol source to atomize the aerosol source, thereby generating an aerosol. In Figure 1 the illustrated example, the heating unit 121A is configured as a coil and wound around the liquid guiding section 122. When the heating unit 121A generates heat, the aerosol source held in the liquid guiding section 122 is then heated and atomized, thereby generating an aerosol. The heating unit 121A generates heat when power is supplied from the power supply section 111A. For example, when the sensor unit 112A detects that the user has started inhaling and / or has input a predetermined information, power may be supplied to the heating unit 121A. Then, when the sensor unit 112A detects that the user has completed inhaling and / or has input a predetermined information, power supply to the heating unit 121A may be stopped. Note that the inhalation action of the user on the inhalation device 100A can be detected, for example, based on the pressure (internal pressure) exceeding a predetermined threshold in the inhalation device 100A detected by the inhalation sensor.

[0060] The flavor source 131 is a component for imparting flavor components to the aerosol. The flavor source 131 may include tobacco-derived or non-tobacco-derived flavor components.

[0061] The air flow path 180 is a flow path for air to be inhaled by a user. The air flow path 180 has a tubular structure having an air inlet hole 181 and an air outlet hole 182. The air inlet hole is an entrance for air to enter the air flow path 180, and the air outlet hole is an exit for air to leave the air flow path 180. In the air flow path 180, the liquid guiding portion 122 is disposed upstream (closer to the air inlet hole 181), and the flavor source 131 is disposed downstream (closer to the air outlet hole 182). The air flowing in through the air inlet hole 181 during user inhalation is mixed with the aerosol generated by the heating unit 121A and is conveyed through the flavor source 131 to the air outlet hole 182, as shown by the arrow 190. When the mixed fluid of aerosol and air passes through the flavor source 131, the flavor components contained in the flavor source 131 are applied to the aerosol.

[0062] The mouthpiece 124 is a member that is held in the user's mouth during inhalation. The air outlet hole 182 is provided in the mouthpiece 124. The user holds the mouthpiece 124 in their mouth so that the mixed fluid of aerosol and air can be suctioned into the oral cavity.

[0063] The configuration example of the inhalation device 100A has been described above. The inhalation device 100A is of course not limited to the configuration described above and can adopt various configurations, such as those illustrated by way of example below.

[0064] As an example, the inhalation device 100A does not need to include the flavor cartridge 130. In this case, the cartridge 120 is provided with the mouthpiece 124.

[0065] As another example, the inhalation device 100A can include multiple types of aerosol sources. By mixing multiple types of aerosols generated from multiple types of aerosol sources in the air flow path 180 to cause a chemical reaction, other types of aerosols can be produced.

[0066] In addition, the means for atomizing the aerosol source is not limited to the heating provided by the heating unit 121A. For example, the means for atomizing the aerosol source can be vibration atomization or induction heating.

[0067] (2) Second configuration example

[0068] Figure 2 is a schematic diagram illustrating a second configuration example of the inhalation device. As Figure 2As shown, the inhalation device 100B according to this configuration example includes a power supply unit 111B, a sensor unit 112B, a notification unit 113B, a memory unit 114B, a communication unit 115B, a control unit 116B, a heating unit 121B, a housing portion 140, and a heat insulation portion 144. Although the inhalation device 100A of the first configuration example has a power supply unit 110 including a power supply unit 111A and a separate heating unit 121A, the inhalation device 100B of the second configuration example has an integrated power supply unit 111B and heating unit 121B. That is to say, the inhalation device 100B of the second configuration example can also be described as having a power supply unit with a built-in heating unit.

[0069] The power supply unit 111B, the sensor unit 112B, the notification unit 113B, the memory unit 114B, the communication unit 115B, and the control unit 116B are all substantially the same as the corresponding components included in the inhalation device 100A according to the first configuration example.

[0070] The housing portion 140 has an internal space 141 and holds the rod-shaped substrate 150 while accommodating a part of the rod-shaped substrate 150 in the internal space 141. The housing portion 140 has an opening 142 to allow the internal space 141 to communicate with the outside, and the housing portion accommodates the rod-shaped substrate 150 inserted into the internal space 141 from the opening 142. For example, the housing portion 140 is a cylindrical body that includes the opening 142 and a bottom portion 143 serving as a bottom surface, and defines a columnar internal space 141. An air flow path for supplying air to the internal space 141 is connected to the housing portion 140. For example, an air inlet hole is provided in the side surface of the inhalation device 100, and this air inlet hole is the entrance for air to enter the air flow path. For example, an air outlet hole is provided in the bottom portion 143, and this air outlet hole serves as the exit for air to flow from the air flow path to the internal space 141.

[0071] The rod-shaped substrate 150 includes a substrate portion 151 and a mouthpiece portion 152. The substrate portion 151 includes an aerosol source. The aerosol source includes tobacco-derived or non-tobacco-derived flavor components. If the inhalation device 100B is a medical inhaler (such as a nebulizer), the aerosol source may include a drug. For example, the aerosol source may be a liquid including tobacco-derived or non-tobacco-derived flavor components such as water and polyols (such as glycerin and propylene glycol), or may be a solid including tobacco-derived or non-tobacco-derived flavor components. In a state where the rod-shaped substrate 150 is held in the accommodation portion 140, at least a part of the substrate portion 151 is accommodated in the internal space 141, and at least a part of the mouthpiece portion 152 protrudes from the opening 142. Thus, when the user holds the mouthpiece portion 152 protruding from the opening 142 in their mouth and inhales, air flows into the internal space 141 via an air flow path not shown in the figure and reaches the inside of the user's mouth together with the aerosol generated from the substrate portion 151.

[0072] In Figure 2 In the illustrated example, the heating unit 121B is configured in a film shape and is provided to cover the outer periphery of the accommodation portion 140. Thus, when the heating unit 121B generates heat, the substrate portion 151 of the rod-shaped substrate 150 is heated from the outer periphery, thereby generating an aerosol.

[0073] The heat insulation portion 144 prevents heat from being transferred from the heating unit 121B to other components. For example, the heat insulation portion 144 is configured of a vacuum heat insulation material or an aerogel heat insulation material, etc.

[0074] The configuration example of the inhalation device 100B has been described above. The inhalation device 100B is of course not limited to the above configuration and may adopt various configurations such as the examples shown below.

[0075] As an example, the heating unit 121B may have a blade-like form and may be arranged to protrude from the bottom portion 143 of the accommodation portion 140 into the internal space 141. In this case, the blade-like heating unit 121B is inserted into the substrate portion 151 of the rod-shaped substrate 150 and heats it from the inside of the substrate portion 151 of the rod-shaped substrate 150. As another example, the heating unit 121B may be arranged to cover the bottom portion 143 of the accommodation portion 140. In addition, the heating unit 121B may be configured by a combination of two or more of a first heating unit covering the outer circumference of the accommodation portion 140, a blade-like second heating unit, and a third heating unit covering the bottom portion 143 of the accommodation portion 140.

[0076] As another example, the accommodating portion 140 may include an opening / closing mechanism (such as a hinge) for opening / closing a part of the outer shell that forms the internal space 141. By opening / closing the outer shell, the accommodating portion 140 can then receive and hold the rod-shaped substrate 150 that has been inserted into the internal space 141. In this case, the heating unit 121B may be provided on the clamping portion of the accommodating portion 140 and can heat the rod-shaped substrate while pressing the rod-shaped substrate 150.

[0077] In addition, the means for atomizing the aerosol source is not limited to the heating provided by the heating unit 121B. For example, the means for atomizing the aerosol source may be induction heating. In this case, the inhalation device 100B includes at least an electromagnetic induction source (such as a coil) for generating a magnetic field instead of the heating unit 121B. A receptor that generates heat by induction heating may be provided in the inhalation device 100B or may be contained in the rod-shaped substrate 150.

[0078] The inhalation device 100B may further include the heating unit 121A, the liquid guiding portion 122, the liquid storage portion 123, and the air flow path 180 according to the first configuration example, and the air flow path 180 may supply air to the internal space 141. In this case, the mixed fluid of the aerosol and air generated by the heating unit 121A flows into the internal space 141 and further mixes with the aerosol generated by the heating unit 121B to reach the user's mouth.

[0079] <<2. Configuration Examples of the Inhalation Device of the Present Disclosure>>

[0080] Next, an embodiment of an inhalation device (hereinafter referred to as the inhalation device 100) that applies the configuration of the inhalation device of the present disclosure is described with respect to the inhalation device 100B of the foregoing second configuration example. Note that although specific descriptions are omitted, some configurations of the inhalation device 100 described below may also be applied to the inhalation device 100A of the first configuration example.

[0081] Figure 3 is an overall perspective view of the inhalation device 100. Hereinafter, in the inhalation device 100, the insertion and removal direction of the rod-shaped substrate 150 with respect to the inhalation device 100 is defined as the vertical direction, the sliding movement direction of the following shutter 23 is defined as the front-rear direction, and the direction perpendicular to the vertical direction and the front-rear direction is defined as the left-right direction. Moreover, as shown in the figure, Fr is the front, Rr is the rear, L is the left side, R is the right side, U is upward, and D is downward.

[0082] The size of the inhalation device 100 is preferably set to fit in the hand, for example having a rod shape. For example, the user holds the inhalation device 100 with one hand, and the fingertips are in contact with the front surface of the inhalation device 100. Note that the shape of the inhalation device 100 is not limited to a rod shape, but can be any shape (for example, a rounded substantially cubic shape or an oval shape).

[0083] The inhalation device 100 includes an internal unit 10 (see Figures 4 to 6 ), and a housing 20 that constitutes the appearance of the inhalation device 100. The housing 20 has a lower housing 21 and an upper housing 22. A part of the internal unit 10 is accommodated in the lower housing 21, and the entire internal unit 10 is accommodated in the housing 20 by covering the lower housing 21 with the upper housing 22 from above.

[0084] The upper surface of the inhalation device 100 is provided with: an opening 27 (see Figures 4 to 6 ), through which the rod-shaped substrate 150 is inserted and removed; and a shutter 23 that can slide in the front-rear direction. The opening 27 is arranged at the rear of the upper surface of the inhalation device 100. The shutter 23 selectively takes an open state (front position) and a closed state (rear position). In the open state, the opening 27 is open to allow the insertion and removal of the rod-shaped substrate 150. In the closed state, the shutter 23 is positioned above the opening 27 to block the opening 27. When inserting the rod-shaped substrate 150 into the opening 27, the user places the shutter 23 in the open state.

[0085] Near the shutter 23, a shutter detection sensor 11 is provided (see Figure 4 ). The shutter detection sensor 11 detects whether the shutter 23 is in the open state. The shutter detection sensor 11 is an example of the sensor unit 112B of the inhalation device 100B of Figure 2 .

[0086] In addition, a universal serial bus (USB) port 26 is provided on the upper surface of the inhalation device 100 adjacent to the opening 27 (see Figure 4 ). In the above open state, the shutter 23 blocks the USB port 26. On the other hand, in the above closed state, the shutter 23 does not block the USB port 26, and the USB port 26 is open. The USB port 26 is configured to be electrically connected to an external power source (not shown in the drawings), and the external power source can supply power to charge the power supply unit 111C (see Figure 4 ). The USB port 26 is, for example, a socket into which a mating plug can be inserted. As an example, in the present embodiment, the USB port 26 is a USB Type-C socket.

[0087] An operation unit 24 and a light-emitting unit 25 are provided on the front side of the inhalation device 100. The operation unit 24 is arranged below the light-emitting unit 25. More specifically, the operation unit 24 and the light-emitting unit 25 are components of the internal unit 10 accommodated in the housing 20, and are configured such that a part of the operation unit 24 and the light-emitting unit 25 are exposed through an opening formed on the front surface of the housing 20. The light-emitting unit 25 is Figure 2 an example of the notification unit 113A of the inhalation device 100B.

[0088] The operation unit 24 is a button-type switch that can be operated by the user, and is an input device for receiving information input from the user. The operation unit 24 is connected to a main board 50 (see Figures 4 to 6 ), which will be described later). When the user presses the operation unit 24, for example, it activates a microcontroller unit (MCU) 1 (see Figures 4 to 6 ), or a heating unit 121C (see Figure 7 ). Note that the MCU 1 serves as the control unit 116B in the inhalation device 100B. In addition, in addition to the function of the control unit 116B in the inhalation device 100B, the MCU 1 can also be provided integrally with the function of the communication unit 115B. Furthermore, the MCU 1 can be configured by one IC, or can be configured by two or more ICs. For example, the discharge control of the heating unit 121C and the charging control of the power supply unit 111C can be executed in one IC, or can be executed in separate ICs.

[0089] The light-emitting unit 25 is configured by a light-emitting device (such as a light-emitting diode (LED)). More specifically, the light-emitting unit 25 includes a plurality of LEDs 251 provided on the main board 50 (see Figure 6 ), and a transparent cover 250 that covers the plurality of LEDs 251 and allows the light from the LEDs 251 to transmit through. A part of the transparent cover 250 is exposed through an opening formed on the front surface of the housing 20. In this embodiment, for example, it is assumed that the plurality of LEDs 251 are configured to be able to emit light of multiple colors, including blue, yellow, and red. Note that the number of light-emitting elements can be set arbitrarily. For example, there can be one light-emitting element in the light-emitting unit 25.

[0090] The light-emitting unit 25 emits light in a predetermined light-emitting mode according to a command from the MCU 1 to notify the user of predetermined information. Here, the light-emitting mode can be, for example, the light-emitting color, but this is not a limitation. For example, it can be the intensity of illumination (in other words, brightness) or an illumination pattern (for example, blinking at a predetermined time interval), etc. In addition, the predetermined information is, for example, operation information indicating whether the inhalation device 100 is powered on.

[0091] Next, refer to Figures 4 to 8Describe the internal unit 10 of the inhalation device 100 of this embodiment. Figure 4 is a perspective view seen from the right front side of the internal unit 10, Figure 5 is a perspective view seen from the left front side of the internal unit 10, Figure 6 is an exploded perspective view of the internal unit 10, Figure 7 is a sectional perspective view of the heater assembly 30, and Figure 8 is a block diagram briefly illustrating the electrical connections of the main components of the internal unit 10. Note that the internal unit 10 is the inhalation device 100, and the housing 20 and the shutter 23 have been removed from this inhalation device.

[0092] The internal unit 10 includes a chassis 40, a main board 50, a vibration device 60, a heater assembly 30, a power supply unit 111C, a power supply board 71, a peripheral FPC 72, a sensor FPC 73, and various sensors. The peripheral FPC 72 and the sensor FPC 73 are flexible circuit boards. A flexible circuit board is flexible and includes conductive wiring and / or signal wiring, and can mount electronic components (elements) such as resistors and chips. The thickness of the flexible circuit board is typically set to 100 - 600 μm. The power supply board 71 can be a flexible circuit board, a rigid board as described below, or a combination of a flexible board and a rigid board, but an example of a flexible circuit board is described here as an example.

[0093] (Chassis)

[0094] As Figure 6 shown in the exploded perspective view, the chassis 40 includes a power holding portion 41 for holding the power supply unit 111C, a board holding portion 42 for holding the main board 50, and a heater holding portion 43 for holding the heater assembly 30. The power holding portion 41 is located in the lower part of the chassis 40, and the board holding portion 42 and the heater holding portion 43 are located in the upper part of the chassis 40.

[0095] The power holding portion 41 has a cylindrical shape with a part of the side cut off, in other words, is substantially a semi-cylindrical shape. The power holding portion 41 has a bottom wall portion 401, a side wall portion 402 having an arc shape and standing upright from the bottom wall portion 401, and a top wall portion 403 provided at the upper end of the side wall portion 402. The power supply unit 111C is arranged in the space surrounded by the bottom wall portion 401, the side wall portion 402, and the top wall portion 403.

[0096] The board holding portion 42 is provided in a vertical wall portion 404 extending upward from the top wall portion 403 of the power holding portion 41. The board holding portion 42 is provided on one side (here the front side) of the vertical wall portion 404 in the front-rear direction and holds the main board 50.

[0097] The heater holding portion 43 is provided on the opposite side (the rear side in this case) of the plate holding portion 42 of the vertical wall portion 404 in the front - rear direction. The heater holding portion 43 has a space surrounded by the vertical wall portion 404, a pair of left - and - right wall portions 405 extending in the front - rear direction from the vertical wall portion 404, and the upper surface of the top wall portion 403 of the power supply holding portion 41, and the heater assembly 30 is arranged in this space.

[0098] (Main board)

[0099] The main board 50 is a rigid board with a plurality of electronic components (elements) mounted on both sides. The rigid board is not flexible, and its thickness is typically set to 300 - 1600 μm. The MCU 1, LED 251, charging IC (integrated circuit) 81, boost DC / DC converter 82, etc. are mounted on the main board 50. The main board 50 is held in the plate holding portion 42 of the chassis 40 such that the component - mounting surface is oriented in the front - rear direction. In Figure 6 only the surface 501 (the front surface in this case) of the main board 50 is shown. Therefore, the charging IC 81 and the boost DC / DC converter 82 mounted on the rear surface 502 (on the back side here) are not shown.

[0100] In the lower region of the surface 501 of the main board 50, a power - connection portion 51 is provided for electrically connecting to the power - supply portion 111C. The power - connection portion 51 is electrically connected to the power - supply portion 111C via the board - connection portion 710 of the power - supply board 71. The power - supply portion 111C is a cylindrical lithium - ion secondary battery and is Figure 2 an example of the power - supply portion 111B of the suction device 100B.

[0101] As Figure 6 shown, the power - supply portion 111C is provided with a positive - electrode tab 111a and a negative - electrode tab 111b. The power - supply portion 111C is arranged in the power - supply holding portion 41 of the chassis 40 such that the positive - electrode tab 111a and the negative - electrode tab 111b are arranged at the front. The power - supply board 71 is arranged in front of the power - supply portion 111C and the main board 50 and extends in the vertical direction. Also referring to Figure 8 , the positive - electrode tab connection portion 711a and the negative - electrode tab connection portion 711b of the power - supply board 71 are respectively connected to the positive - electrode tab 111a and the negative - electrode tab 111b of the power - supply portion 111C, and the board - connection portion 710 is electrically connected to the power - connection portion 51 of the main board 50. The power of the power - supply portion 111C is transmitted to the main board 50 through the conductive tracks formed in the power - supply board 71 and is supplied to each electronic component, such as the boost DC / DC converter 82. In addition, the power - supply board 71 is provided with a power - supply temperature sensor 16. The power - supply temperature sensor 16 is a sensor for measuring the temperature of the power - supply portion 111C. The power - supply temperature sensor 16 is, for example, a thermistor. The power - supply temperature sensor 16 is Figure 2An example of the sensor unit 112B of the inhalation device 100B.

[0102] The power supply board 71 is provided with a fuse 17 which is inserted into a conductive track formed in the power supply board 71. When an excessive current flows through the fuse 17, the fuse will break the circuit. The power supply board 71 will be described in more detail later.

[0103] A protection IC 83 and a remaining capacity meter IC 84 are further mounted on the surface 501 of the main board 50. Also refer to Figure 8 , the protection IC 83 seeks to protect the power supply unit 111C by stopping the charging or discharging of the power supply unit 111C in the case of overcharging or over-discharging of the power supply unit 111C. The remaining capacity meter IC 84 obtains battery information such as the remaining capacity of the power supply unit 111C, the SOC (state of charge) indicating the power state, and the SOH (state of health) indicating the health state, and obtains temperature information related to the temperature of the power supply unit 111C from the power supply temperature sensor 16. The remaining capacity meter IC 84 is connected to the MCU 1 via the communication line LN for serial communication and is configured to be able to communicate with the MCU 1.

[0104] The USB port 26 is provided in the upper region of the rear surface 502 of the main board 50. The USB port 26 is electrically connected to the charging IC 81 via a wire formed in the main board 50.

[0105] As Figure 8 shown, in addition to the charging IC 81 and the boost DC / DC converter 82, heater connectors 57a, 57b are also provided on the rear surface 502 of the main board 50. The charging IC 81 performs charging control to supply (charge) the power input from the USB port 26 to the power supply unit 111C. The boost DC / DC converter 82 boosts the voltage of the power supplied from the power supply unit 111C to generate power to be supplied to the heating unit 121C via the heating switch 85. For example, the heating switch 85 is a FET (field effect transistor).

[0106] The board connection portion 121a extending from below the heater assembly 30 is connected to the heater connectors 57a, 57b to supply power to the heating unit 121C of the heater assembly 30. In this way, the heating unit 121C of the heater assembly 30 is supplied with power from the power supply unit 111C via the main board 50.

[0107] (Vibration device)

[0108] The vibration device 60 is configured with a vibration element such as a vibration motor. As Figure 6As shown in the figure, the vibration device 60 is arranged in the power supply holding part 41 of the chassis 40, between the top surface of the power supply unit 111C and the top wall part 403. The lead 61 of the vibration device 60 is connected to the peripheral FPC 72. The vibration device 60 vibrates in a predetermined vibration mode according to a command from the MCU 1 to notify the user of predetermined information. For example, when the heating of the rod-shaped substrate 150 starts or ends, the vibration device 60 vibrates in a predetermined vibration mode to notify the user of the start or end of heating. The vibration device 60 is Figure 2 an example of the notification unit 113B of the suction device 100B.

[0109] (Heater assembly)

[0110] The heater assembly 30 includes a heating unit 121C, a housing part 140C, and a heat insulation part 144C. The heating unit 121C is, for example, a film heater and is wound around the outer circumference of the housing part 140C. In addition, the heating unit 121C and the board connection part 121a may be configured with a single heater FPC.

[0111] In addition, the heater assembly 30 is provided with a rod guide 31. The rod guide 31 is provided at the top of the heater assembly 30 and guides the rod-shaped substrate 150 to be inserted into and removed from the housing part 140C. The rod guide 31 is a cylindrical member having an opening 27 and forms a part of the housing part 140C.

[0112] In addition, the heater assembly 30 is provided with a heater temperature sensor 15 capable of measuring the temperature of the heating unit 121C. More specifically, the heater temperature sensor 15 is provided between the heating unit 121C and the heat insulation part 144C, in contact with or close to the heating unit 121C. The heater temperature sensor 15 is, for example, a thermistor.

[0113] (Sensor FPC)

[0114] As Figure 6 shown in the figure, the sensor FPC 73 is arranged in the heater holding part 43, between the vertical wall part 404 and the heater assembly 30. The sensor FPC 73 is equipped with a rod detection sensor 12, a suction sensor 13, and a housing temperature sensor 14. The rod detection sensor 12, the suction sensor 13, and the housing temperature sensor 14 are Figure 2 examples of the sensor unit 112B of the suction device 100B.

[0115] The rod detection sensor 12 is a sensor capable of detecting the rod-shaped substrate 150 accommodated in the accommodation part 140. In the present embodiment, the rod detection sensor 12 is an optical sensor capable of detecting the rod-shaped substrate 150 based on the amount of light reflected from the light emitted to the accommodation part 140. Here, the amount of light includes luminous flux, illuminance, luminous emittance, brightness, luminance, and the like. The optical sensor is, for example, an infrared ray (IR) sensor.

[0116] The inhalation sensor 13 is a sensor that detects the smoking action (inhalation action) of the user. The inhalation sensor 13 includes, for example, a condenser microphone, a pressure sensor, a smoking thermistor, and the like. The inhalation sensor 13 is provided near the rod guide 31 in the sensor FPC 73.

[0117] The housing temperature sensor 14 is a sensor for measuring the temperature of the housing 20. The housing temperature sensor 14 is, for example, a thermistor. The housing temperature sensor 14 is arranged in the sensor FPC 73, adjacent to the inner surface of the housing 20.

[0118] In addition, the sensor FPC 73 is provided with a heater temperature sensor connection part 731 for connecting to the heater temperature sensor 15 connected to the heater assembly 30. The heater temperature sensor connection part 731 is provided in the lower part of the sensor FPC 73. More specifically, the lead 15a is connected to the heater temperature sensor 15, and the heater temperature sensor connection part 731 is connected to the lead 15a extending from below the heater assembly 30.

[0119] The rod detection sensor 12, the inhalation sensor 13, the housing temperature sensor 14, and the heater temperature sensor connection part 731 are connected to the board connection part 730 via signal wirings formed in the sensor FPC 73. The board connection part 730 is connected to the sensor FPC connection part 55 provided in the central area of the surface 501 of the main board 50. In this way, the detection results of each sensor are output to the MCU 1 etc. mounted on the main board 50.

[0120] In the inhalation device 100 configured as such, when the shutter detection sensor 11 detects the open state of the shutter 23 and the rod-shaped substrate 150 is detected by the rod detection sensor 12, the MCU 1 starts heating via the heating unit 121C. When the user inhales on the mouthpiece portion 152 of the rod-shaped substrate 150, aerosol is supplied from the aerosol source of the rod-shaped substrate 150 heated by the heating unit 121C into the user's mouth. The inhalation sensor 13 detects the number of smoking times, and the MCU 1 stops heating after a predetermined number of smoking times or after a predetermined time has elapsed. During the heating of the inhalation device 100, the housing temperature sensor 14, the heater temperature sensor 15, and the power supply temperature sensor 16 measure each temperature, and if it is determined that there is abnormal heating, the MCU 1 stops or reduces the heating of the heating unit 121C. The user can also operate the operation unit 24 to check, for example, the SOC of the power supply unit 111C. The light-emitting unit 25 (LED 251) and the vibration device 60 notify the user of various information, such as the SOC of the power supply unit 111C, error indication, etc. When the SOC of the power supply unit 111C drops, the user can connect an external power source to the USB port 26 to charge the power supply unit 111C.

[0121] (Power supply board)

[0122] Then the reference Figures 9 to 11 Describe the power supply board 71 in detail.

[0123] Figure 9 is a cross-sectional view of the power supply board 71. As Figure 9 shown, the power supply board 71 has a multi-layer structure. Specifically, the power supply board 71 includes a substrate 760, a first conductive layer L1 provided on one side (hereinafter referred to as the surface) of the substrate 760; a second conductive layer L2 provided on the other side (hereinafter referred to as the back surface) of the substrate 760; a first insulating layer 761 located on the first conductive layer L1; a second insulating layer 762 located on the second conductive layer L2; a first adhesive layer 763 that adheres the first conductive layer L1 and the first insulating layer 761; and a second adhesive layer 764 that adheres the second conductive layer L2 and the second insulating layer 762. When the power supply board 71 is accommodated in the housing 20 (hereinafter referred to as the accommodation state), it is configured such that the lamination direction is in the front-rear direction, and is arranged such that the first conductive layer L1 side faces forward, as Figure 6 shown.

[0124] Figure 10 is a view of the first conductive layer L1 and the second conductive layer L2 of the power supply board 71 seen from the front. In Figure 10 shown, the filled black portions show the conductive regions, and the lines outside the conductive regions show the outer edge 760a of the substrate 760 of the power supply board 71 located between the first conductive layer L1 and the second conductive layer L2.

[0125] The power supply board 71 has a substantially rectangular body portion 771 that is longer in the vertical direction than in the left - right direction, an upper - right extension portion 772 that extends further upward from the upper - right side of the body portion 771, and a lower - left extension portion 773 that extends obliquely downward from the bottom of the body portion 771 toward the lower - left side.

[0126] As described above, the power supply board 71 is provided with a positive - electrode tab connection portion 711a and a negative - electrode tab connection portion 711b, and is equipped with a power - supply temperature sensor 16 and a fuse 17, which is electrically connected to the power - supply connection portion 51 of the main board 50 at the board connection portion 710. More specifically, the positive - electrode tab connection portion 711a and the negative - electrode tab connection portion 711b are exposed on the surface of the power supply board 71. The power - supply temperature sensor 16 and the fuse 17 are mounted on the surface of the power supply board 71 and are connected to the first conductive layer L1 on the surface side as shown in Figure 10 . The board connection portion 710 is mounted on the back surface of the power supply board 71.

[0127] The first conductive layer L1 includes a first negative - electrode conductive region 780 formed in the body portion 771 and the upper - right extension portion 772, a first positive - electrode conductive region 781 formed in the lower - part of the lower - left extension portion 773, and a second positive - electrode conductive region 782 formed in the upper - part of the lower - left extension portion 773 and formed between the first negative - electrode conductive region 780 and the first positive - electrode conductive region 781. It should be noted that the first negative - electrode conductive region 780, the first positive - electrode conductive region 781, and the second positive - electrode conductive region 782 are spaced apart from each other and isolated from each other in the vertical direction. In addition, the first negative - electrode conductive region 780, the first positive - electrode conductive region 781, and the second positive - electrode conductive region 782 are formed slightly inward from the outer edge 760a in the width direction (left - right direction) substantially over the entire region.

[0128] The first positive - electrode conductive region 781 is provided with the positive - electrode tab connection portion 711a, and the first negative - electrode conductive region 780 is provided with the negative - electrode tab connection portion 711b. The positive - electrode tab connection portion 711a and the negative - electrode tab connection portion 711b are arranged at substantially the same position in the left - right direction and are arranged in close proximity to the second positive - electrode conductive region 782 interposed therebetween in the vertical direction.

[0129] The fuse 17 is connected between the first positive - electrode conductive region 781 and the second positive - electrode conductive region 782, and the first positive - electrode conductive region 781 and the second positive - electrode conductive region 782 are typically conductive through the fuse 17. On the other hand, in the case of an over - current occurrence, the fuse 17 melts, thereby isolating the first positive - electrode conductive region 781 and the second positive - electrode conductive region 782.

[0130] The second positive electrode conductive region 782 is connected to the second conductive layer L2 via a plurality of through holes penetrating the substrate 760. The second conductive layer L2 has a third positive electrode conductive region 783 formed across the main body portion 771 and the lower left side extension portion 773, a positive electrode contact connection portion 784 formed at the bottom of the upper right side extension portion 772 and connected to the positive electrode contact of the board connection portion 710, and a negative electrode contact connection portion 785 formed at the top of the upper right side extension portion 772 and connected to the negative electrode contact of the board connection portion 710. The third positive electrode conductive region 783 and the positive electrode contact connection portion 784 are continuous and always conductive. On the other hand, the positive electrode contact connection portion 784 and the negative electrode contact connection portion 785 are spaced apart from each other in the vertical direction and insulated from each other.

[0131] In the power supply board 71 configured as described above, the power supplied from the positive electrode tab 111A of the power supply unit 111C is supplied to the main board 50 through the positive electrode tab connection portion 711a, the first positive electrode conductive region 781, the fuse 17, the second positive electrode conductive region 782, the third positive electrode conductive region 783, the positive electrode contact connection portion 784, and the positive electrode contact of the board connection portion 710.

[0132] In addition, the first negative electrode conductive region 780 of the first conductive layer L1 is connected to the negative electrode contact connection portion 785 via a plurality of through holes passing through the substrate 760, and is connected to the negative electrode contact of the board connection portion 710 mounted on the top of the upper right side extension portion 772 on the rear surface. The wiring connecting the negative electrode tab 111b of the power supply unit 111C to the negative electrode contact of the board connection portion 710 through the first negative electrode conductive region 780 and the negative electrode contact connection portion 785 is at the same potential as the reference potential (ground potential) of the internal unit 10, and constitutes a ground wire 75 (see Figure 8 )).

[0133] Now, as Figure 10As shown, the width W1 of the first positive electrode conductive region 781 connecting the positive electrode tab connection portion 711a and the positive electrode contact member connection portion 784 and the width W2 of the second positive electrode conductive region 782 are wider than the width Wa of the positive electrode tab connection portion 711a. Note that the width is the length in the direction orthogonal to the current flow direction. In the present embodiment, the current flow direction is in the vertical direction from the positive electrode tab connection portion 711a toward the positive electrode contact member connection portion 784, and the width is the length in the left-right direction orthogonal to the vertical direction. Due to the widths W1 and W2 of the first positive electrode conductive region 781 and the second positive electrode conductive region 782, even if a large current flows from the power supply unit 111C through the positive electrode tab connection portion 711a, current concentration inside the power supply board 71 can be avoided, and power can be appropriately supplied from the power supply unit 111C. In particular, in the region where the positive electrode tab connection portion 711a is connected to the first positive electrode conductive region 781, it is preferable that the width W1 of the first positive electrode conductive region 781 is wider than the width Wa of the positive electrode tab connection portion 711a. Similarly, the width W3 of the first negative electrode conductive region 780 connecting the negative electrode tab connection portion 711b and the negative electrode contact member connection portion 785 is wider than the width Wb of the negative electrode tab connection portion 711b. In particular, in the region where the negative electrode tab connection portion 711b is connected to the first negative electrode conductive region 780, it is preferable that the width W3 of the first negative electrode conductive region 780 is wider than the width Wb of the negative electrode tab connection portion 711b.

[0134] Furthermore, a fuse 17 is provided between the first positive electrode conductive region 781 and the second positive electrode conductive region 782, and thus, if a certain type of abnormality causes current to flow from the power supply unit 111C side to the main board 50 side, from the main board 50 side to the power supply unit 111C side, or to be higher than the rated current, the continued flow of current can be avoided by interrupting the circuit, thereby allowing power to be supplied safely. Also, the size of the main board 50 can be reduced compared to arranging the fuse 17 in the main board 50.

[0135] Figure 11 is a view of the first conductive layer L1 and the second conductive layer L2 of the power supply board 71 of the variant example seen from the front. As Figure 11 shown, the first positive electrode conductive region 781, the second positive electrode conductive region 782, the third positive electrode conductive region 783, and the first negative electrode conductive region 780 formed in the first conductive layer L1 and the second conductive layer L2 can be formed to have a conductive region in a mesh shape. This can relieve the stress on the board connection portion 710. On the other hand, at the first conductive layer L1 and the second conductive layer L2 of the Figure 10 power supply board 71, the DC current resistance is the smallest and the power supply efficiency is good.

[0136] It should be noted that in the foregoing embodiments, the power supply board 71 is equipped with a power supply temperature sensor 16 and a fuse 17, but is not limited thereto, and other components can be installed. For example, from a safety perspective, a protection IC 83, a circuit interruption FET connected to the protection IC 83 to interrupt the charging of the power supply unit 111C or discharge to the power supply unit 111C, and a current detection shunt resistor connected to the protection IC 83 and used to detect the charging or discharging current of the power supply unit 111C can be installed. In particular, the protection IC 83 and the current detection shunt resistor not only improve safety but also allow the charging voltage and charging current or discharging voltage and discharging current of the power supply unit 111C to be detected more accurately. That is, when the protection IC 83 is installed on the power supply board 71, the voltage can be detected near the power supply unit 111C compared to when it is installed on the main board 50, and thus the detection accuracy of overcharging, over-discharging, and short-circuiting caused by voltage is improved. Installing the protection IC 83 on the power supply board 71 also allows these to be detected before the fuse. Similarly, when the current detection shunt resistor is installed on the power supply board 71, the current can be detected near the power supply unit 111C compared to when it is installed on the main board 50, and thus the detection accuracy of overcharging, over-discharging, and short-circuiting caused by current is improved. Installing the current detection shunt resistor on the power supply board 71 also allows these to be detected before the fuse 17.

[0137] Figure 12 and Figure 13 is a diagram illustrating another example of the positive electrode tab 111a connected to the positive electrode tab connection portion 711a. Note that although the description thereof is omitted, the same applies to the negative electrode tab 111b connected to the negative electrode tab connection portion 711b.

[0138] The connection between the positive electrode tab 111a and the positive electrode tab connection portion 711a is generally performed by welding the end of the positive electrode tab 111a to the positive electrode tab connection portion 711a. Figure 12 Shows the rectangular positive electrode tab 111a welded to the rectangular positive electrode tab connection portion 711a, and the connection line 790 by which the positive electrode tab 111a and the positive electrode tab connection portion 711a are connected by welding, and the connection line is a straight line.

[0139] As Figure 13As shown, when the rectangular positive electrode tab 111a with the recess 160 is welded to the rectangular positive electrode tab connection portion 711a, a recess 791 is formed in the connection line 790. If the recess 160 is configured by connecting one ends of two parallel straight portions 161 through a semi-circular arc 162, the bottom portion of the recess 791 includes a semi-circular arc. Note that the bottom portion of the recess 791 may include an elliptical arc. In this way, the connection line 790 includes the recess 791, making the connection line 790 longer than a simple straight line, and thus the resistance is reduced and the power supply efficiency can be improved. In addition, by presenting the bottom of the recess 791 as an arc, current concentration at the corners can be avoided, and the power supply efficiency can be further improved.

[0140] The connection line 790 is not limited to including a recess, and may include a protrusion, or any configuration, as long as at least a part thereof includes a curved section or a bent section (such as a zigzag or a waveform type). It should be noted that this disclosure does not exclude the connection line 790 being a simple straight line.

[0141] Return Figures 4 to 6 , the power supply temperature sensor 16 mounted on the surface of the power supply board 71 is provided between the positive electrode tab connection portion 711a and the negative electrode tab connection portion 711b together with the fuse 17. As Figure 10 shown, the power supply temperature sensor 16 is located in the space provided to prevent short circuit between the first positive electrode conductive region 781 and the second positive electrode conductive region 782 of the first conductive layer L1, and is connected to the board connection portion 710. By mounting the power supply temperature sensor 16 on the power supply board 71, the connection between the power supply unit 111C and the main board 50 and the connection between the power supply temperature sensor 16 and the main board 50 can be shared, and the size of the main board 50 can be reduced.

[0142] More specifically, as Figure 10 shown, the positive terminal of the power supply temperature sensor 16 is connected to the positive signal contact of the board connection portion 710 via the first positive signal line 713 formed in the first conductive layer L1, the second positive signal line 714 formed in the second conductive layer L2, and the through hole 715 connecting the first positive signal line 713 and the second positive signal line 714. The positive signal contact of the board connection portion 710 is connected to the positive signal contact of the main board 50. The negative terminal of the power supply temperature sensor 16 is connected to the negative signal contact of the board connection portion 710 via the first negative signal line 716 formed in the first conductive layer L1, the second negative signal line 717 formed in the second conductive layer L2, and the through hole 718 connecting the first negative signal line 716 and the second negative signal line 717. The negative signal contact of the board connection portion 710 is connected to the negative signal contact of the main board 50.

[0143] Here, the second positive electrode signal line 714 extends in the vertical direction between the third positive electrode conductive region 783 formed in the second conductive layer L2 and the outer edge 760a at the right end of the substrate 760. Disposing the second positive electrode signal line 714 in the middle of the third positive electrode conductive region 783 narrows the third positive electrode conductive region 783 and causes current concentration. However, disposing the second positive electrode signal line 714 between the outer edge 760a of the power supply board 71 and the third positive electrode conductive region 783 can ensure a wide third positive electrode conductive region 783.

[0144] Similarly, the first negative electrode signal line 716 extends in the vertical direction between the first negative electrode conductive region 780 formed in the first conductive layer L1 and the outer edge 760a at the right end of the substrate 760. By disposing the first negative electrode signal line 716 between the outer edge 760a of the power supply board 71 and the first negative electrode conductive region 780, a wide first negative electrode conductive region 780 can be ensured.

[0145] By disposing the second positive electrode signal line 714 and the first negative electrode signal line 716 with long wiring distances in different layers, a wider conductive region can be ensured than in the case of disposing them in the same layer. In addition, when viewed from the lamination direction, the second positive electrode signal line 714 and the first negative electrode signal line 716 are arranged to overlap.

[0146] As Figures 4 to 6 shown, the surface of the power supply board 71 on which the power supply temperature sensor 16 and the fuse 17 are mounted is positioned opposite to the surface facing the power supply unit 111C. This avoids damaging the power supply temperature sensor 16 and the fuse 17 when attaching and detaching the power supply unit 111C.

[0147] Although the different embodiments of the present disclosure have been described above with reference to the accompanying drawings, it goes without saying that the present disclosure is not limited to such examples. Obviously, those skilled in the art will be able to conceive of multiple variant examples or modified examples within the scope disclosed in the claims, and any such variant examples or modified examples are naturally understood to fall within the technical scope of the present disclosure. In addition, the components in the above-described embodiments can be arbitrarily combined without departing from the spirit of the present invention.

[0148] For example, the power supply board 71 has two conductive layers L1 and L2, but the conductive layer can be one layer or can be three or more layers.

[0149] This specification has at least set forth the following features. Note that the corresponding components, etc. in the above embodiments are shown in parentheses, but are not limited thereto.

[0150] (1) A power supply unit for an aerosol generating device (power supply unit 110, inhalation device 100B, 100), the power supply unit comprising: a power source (power supply parts 111A to 111C) that supplies power to a heating unit (heating units 121A to 121C) for heating an aerosol source (rod-shaped matrix 150);

[0151] a control device (control units 116A, control unit 116B, MCU 1) that controls the heating unit;

[0152] a first board (main board 50) for mounting the control device; and

[0153] a second board (power supply board 71) connected to the power source and the first board, wherein

[0154] the second board includes

[0155] electrode connection parts (positive electrode tab connection part 711a, negative electrode tab connection part 711b) that are connected to an electrode (positive electrode tab 111a) of the power source,

[0156] contact connection part (positive contact connection part 784) that is connected to a contact of the first board, and

[0157] a conductive area (first positive conductive area 781, second positive conductive area 782) that connects the electrode connection part and the contact connection part, and

[0158] the width (width W1, width W2) of the conductive area is wider than the width (width Wa) of the electrode connection part.

[0159] According to (1), due to the wide conductive area, even if a large current flows out of the power source via the electrode connection, current concentration within the second board can be avoided, and power can be appropriately supplied from the power source.

[0160] (2) The power supply unit for an aerosol generating device according to (1), wherein

[0161] a fuse (fuse 17) is mounted in the conductive area on the second board.

[0162] According to (2), if any abnormality causes a current equal to or greater than the rated current to flow from the power source side to the first board side or from the first board side to the power source side, current continuation can be avoided by interrupting the circuit, thereby allowing power to be supplied safely. In addition, compared with arranging the fuse in the first board, the size of the first board can also be reduced.

[0163] (3)The power supply unit for an aerosol generating device according to (1) or (2), wherein,

[0164] The electrode tab (positive electrode tab 111a) extending from the power source is connected to the electrode connection portion,

[0165] At least a part of the outer edge of the electrode tab is connected to the electrode connection portion, and

[0166] The connecting line (connecting line 790) between the electrode tab and the electrode connection portion includes a bent section or a curved section.

[0167] According to (3), when the electrode tab and the electrode connection portion are connected, for example, by welding to form a connecting line, the connecting line is longer than a simple straight line, and thus the resistance is reduced, and the power supply efficiency can be improved.

[0168] (4)The power supply unit for an aerosol generating device according to (3), wherein,

[0169] The connecting line includes a recess (recess 791).

[0170] According to (4), a longer connecting line can be ensured.

[0171] (5)The power supply unit for an aerosol generating device according to (4), wherein,

[0172] The bottom part of the recess is an arc of a circle or an ellipse.

[0173] According to (5), current concentration at the corners can be avoided, and the power supply efficiency can be further improved.

[0174] (6)The power supply unit for an aerosol generating device according to any one of (1) to (5), wherein,

[0175] A thermistor (power supply temperature sensor 16) is mounted on the second plate.

[0176] According to (6), the connection between the power source and the first plate and the connection between the thermistor and the first plate can be shared, and the size of the first plate can be reduced. In addition, compared with arranging the thermistor in the main board, the size of the first plate can also be reduced.

[0177] (7)The power supply unit for an aerosol generating device according to (6), wherein,

[0178] The thermistor is connected to the first plate via signal lines (first positive signal line 713, second positive signal line 714, first negative signal line 716, second negative signal line 717), and

[0179] At least a part of the signal line (second positive signal line 714, first negative signal line 716) is disposed between the outer edge (outer edge 760a) of the second plate and the conductive region.

[0180] According to (7), when the signal line passes between these conductive regions, the conductive regions become narrow and current concentration occurs. However, by disposing the signal line between the outer edge of the second plate and the conductive region, a wide conductive region can be ensured.

[0181] (8) The power supply unit for an aerosol generating device according to (6) or (7), wherein

[0182] The thermistor is connected to the connection portion (power connection portion 51) of the first plate via a positive signal line (second positive signal line 714) and a negative signal line (first negative signal line 716),

[0183] The second plate includes

[0184] a multilayer structure,

[0185] At least a part of the negative signal line is disposed in the first layer (first conductive layer L1), and

[0186] At least a part of the positive signal line is disposed in the second layer (second conductive layer L2), and the second layer is a layer different from the first layer.

[0187] According to (8), by disposing the two signal lines in different layers, a wider conductive region can be ensured than in the case of disposing them in the same layer.

[0188] (9) The power supply unit for an aerosol generating device according to (8), wherein

[0189] The positive signal line and the negative signal line are disposed to overlap when viewed in the lamination direction.

[0190] According to (9), the positions of the signal lines can be integrated.

[0191] (10) The power supply unit for an aerosol generating device according to any one of (6) to (9), wherein

[0192] The electrode connection portion has a positive electrode connection portion (positive electrode tab connection portion 711a) and a negative electrode connection portion (negative electrode tab connection portion 711b), and

[0193] The thermistor is disposed between the positive electrode connection portion and the negative electrode connection portion.

[0194] According to (10), the size of the second plate can be reduced by disposing the thermistor in a space provided to prevent short - circuit.

[0195] The power supply unit for an aerosol generating device according to (2), wherein,

[0196] The electrode connection part has a positive electrode connection part (positive electrode tab connection part 711a) and a negative electrode connection part (negative electrode tab connection part 711b), and

[0197] The fuse is provided between the positive electrode connection part and the negative electrode connection part.

[0198] According to (11), the size of the second plate can be reduced by arranging the fuse in a space provided for preventing short circuits.

[0199] The power supply unit for an aerosol generating device according to (10), wherein,

[0200] A fuse (fuse 17) is installed in the conductive area on the second plate, and

[0201] The thermistor and the fuse are provided between the positive electrode connection part and the negative electrode connection part.

[0202] According to (12), the size of the second plate can be reduced by arranging the thermistor and the fuse in a space provided for preventing short circuits.

[0203] The power supply unit for an aerosol generating device according to (12), wherein,

[0204] The thermistor and the fuse are installed on the surface (front surface) on the opposite side of the power supply.

[0205] According to (13), damage to the thermistor and the fuse can be avoided when attaching and detaching the power supply.

[0206] The power supply unit for an aerosol generating device according to any one of (1) to (13), wherein,

[0207] The first plate is a rigid plate and the second plate is a flexible circuit board.

[0208] According to (14), concentration of electric power inside the flexible circuit board can be avoided and electric power can be appropriately supplied from the power supply.

[0209] An aerosol generating device (inhalation device 100B, 100), comprising: a power supply (power supply parts 111A to 111C);

[0210] A heating unit (heating units 121A to 121C), which consumes electric power supplied from the power supply to heat an aerosol source;

[0211] A control device (control unit 116A, control unit 116B, MUC 1) that controls the heating unit;

[0212] A first board (main board 50) for mounting the control device; and

[0213] A second board (power supply board 71) connected to the power supply and the first board, where

[0214] The second board includes

[0215] An electrode connection part (positive electrode tab connection part 711a) that connects to the electrode of the power supply,

[0216] A contact connection part (positive contact connection part 784) that connects to the contact of the first board, and

[0217] A conductive area (first positive conductive area 781, second positive conductive area 782) that connects the electrode connection part and the contact connection part, and

[0218] The width (width W1, width W2) of the conductive area is wider than the width (width Wa) of the electrode connection part.

[0219] According to (15), due to the wide conductive area, even if a large current flows out from the power supply via the electrode connection, current concentration in the second board can be avoided, and power can be supplied appropriately from the power supply.

[0220] List of reference numerals

[0221] 16 Power supply temperature sensor (thermistor)

[0222] 17 Fuse

[0223] 50 Main board (first board)

[0224] 51 Power supply connection part (connection part of the first board)

[0225] 71 Power supply board (second board)

[0226] 100A Inhalation device (aerosol generating device)

[0227] 100 Inhalation device (aerosol generating device, power supply unit)

[0228] 100B Inhalation device (aerosol generating device, power supply unit)

[0229] 110 Power supply unit

[0230] 111A Power supply part (power supply)

[0231] 111B Power supply unit (power source)

[0232] 111C Power supply unit (power source)

[0233] 111a Positive electrode tab (electrode, tab)

[0234] 116A Control unit (control device)

[0235] 116B Control unit (control device)

[0236] 121A Heating unit

[0237] 121B Heating unit

[0238] 121C Heating unit

[0239] 150 Rod-shaped matrix (aerosol source)

[0240] 711a Positive electrode tab connection part (electrode connection part, positive electrode connection part)

[0241] 711b Negative electrode tab connection part (electrode connection part, negative electrode connection part)

[0242] 713 First positive signal line (signal line)

[0243] 714 Second positive signal line (signal line)

[0244] 716 First negative signal line (signal line)

[0245] 717 Second negative signal line (signal line)

[0246] 781 First positive conductive region (conductive region)

[0247] 782 Second positive conductive region (conductive region)

[0248] 784 Positive contact part connection part (contact part connection part)

[0249] 790 Connection line

[0250] 791 Recess

[0251] L1 First conductive layer (first layer)

[0252] L2 Second conductive layer (second layer)

[0253] W1 Width of the first positive conductive region (width of the conductive region)

[0254] W2 Width of the second positive conductive region (width of the conductive region)

[0255] Width of the connection part of the Wa positive electrode tab (width of the electrode connection part)

[0256] MCU 1 (control device)

Claims

1. A power supply unit for an aerosol generating device, the power supply unit comprising: A power source that supplies power to a heating unit for heating an aerosol source; A control device that controls the heating unit; A first board for mounting the control device; And A second board connected to the power source and the first board, wherein, The second board includes An electrode connection portion that connects to an electrode of the power source, A contact connection portion that connects to a contact of the first board, and A conductive region that connects the electrode connection portion and the contact connection portion, and The width of the conductive region is wider than the width of the electrode connection portion.

2. The power supply unit for an aerosol generating device according to claim 1, wherein, A fuse is mounted in the conductive region on the second board.

3. The power supply unit for an aerosol generating device according to claim 1 or 2, wherein, An electrode tab extending from the power source is connected to the electrode connection portion, At least a part of the outer edge of the electrode tab is connected to the electrode connection portion, and The connecting line between the electrode tab and the electrode connection portion includes a bent section or a curved section.

4. The power supply unit for an aerosol generating device according to claim 3, wherein, The connecting line includes a recess.

5. The power supply unit for an aerosol generating device according to claim 4, wherein, The bottom part of the recess is an arc of a circle or an ellipse.

6. The power supply unit of the aerosol generating device according to any one of claims 1 to 5, wherein, A thermistor is mounted on the second board.

7. The power supply unit for an aerosol generating device according to claim 6, wherein, The thermistor is connected to the first board via a signal line, and At least a part of the signal line is disposed between the outer edge of the second board and the conductive region.

8. The power supply unit for an aerosol generating device according to claim 6 or 7, wherein, The thermistor is connected to a connection portion of the first board via a positive signal line and a negative signal line, The second board includes A multi-layer structure, At least a part of the negative signal line is disposed in the first layer, and At least a part of the positive signal line is disposed in the second layer, and the second layer is a layer different from the first layer.

9. The power supply unit for an aerosol generating device according to claim 8, wherein, The positive signal line and the negative signal line are arranged to overlap when viewed in the lamination direction.

10. The power supply unit for an aerosol generating device according to any one of claims 6 to 9, wherein, The electrode connection portion has a positive electrode connection portion and a negative electrode connection portion, and The thermistor is disposed between the positive electrode connection portion and the negative electrode connection portion.

11. The power supply unit for an aerosol generating device according to claim 2, wherein, The electrode connection portion has a positive electrode connection portion and a negative electrode connection portion, and The fuse is disposed between the positive electrode connection portion and the negative electrode connection portion.

12. The power supply unit for an aerosol generating device according to claim 10, wherein, A fuse is mounted in the conductive region on the second board, and The thermistor and the fuse are disposed between the positive electrode connection portion and the negative electrode connection portion.

13. The power supply unit for an aerosol generating device according to claim 12, wherein the thermistor and the fuse are mounted on a surface on the opposite side of the power supply.

14. The power supply unit for an aerosol generating device according to any one of claims 1 to 13, wherein the first plate is a rigid plate and the second plate is a flexible circuit board.

15. An aerosol generating device, comprising: A power supply; A heating unit that consumes electric power supplied from the power supply to heat an aerosol source; A control device that controls the heating unit; A first plate for mounting the control device; And A second plate connected to the power supply and the first plate, wherein the second plate includes An electrode connection portion that is connected to an electrode of the power supply, A contact connection portion that is connected to a contact of the first plate, and A conductive region that connects the electrode connection portion and the contact connection portion, wherein the width of the conductive region is wider than the width of the electrode connection portion.

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