WO2023281712A1 - エアロゾル生成装置の電源ユニット - Google Patents
エアロゾル生成装置の電源ユニット Download PDFInfo
- Publication number
- WO2023281712A1 WO2023281712A1 PCT/JP2021/025828 JP2021025828W WO2023281712A1 WO 2023281712 A1 WO2023281712 A1 WO 2023281712A1 JP 2021025828 W JP2021025828 W JP 2021025828W WO 2023281712 A1 WO2023281712 A1 WO 2023281712A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- power supply
- supply unit
- pin
- aerosol generator
- insulating film
- Prior art date
Links
- 239000000443 aerosol Substances 0.000 title claims abstract description 139
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 16
- 230000005674 electromagnetic induction Effects 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 3
- 239000002344 surface layer Substances 0.000 abstract description 21
- 239000010410 layer Substances 0.000 description 81
- 239000003990 capacitor Substances 0.000 description 39
- 239000000758 substrate Substances 0.000 description 22
- 239000000796 flavoring agent Substances 0.000 description 17
- 235000019634 flavors Nutrition 0.000 description 17
- 230000005611 electricity Effects 0.000 description 15
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- 238000001514 detection method Methods 0.000 description 14
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- 230000000149 penetrating effect Effects 0.000 description 4
- 241000208125 Nicotiana Species 0.000 description 3
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 238000000889 atomisation Methods 0.000 description 3
- 238000009499 grossing Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
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- 238000012546 transfer Methods 0.000 description 2
- NOOLISFMXDJSKH-UTLUCORTSA-N (+)-Neomenthol Chemical compound CC(C)[C@@H]1CC[C@@H](C)C[C@@H]1O NOOLISFMXDJSKH-UTLUCORTSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- NOOLISFMXDJSKH-UHFFFAOYSA-N DL-menthol Natural products CC(C)C1CCC(C)CC1O NOOLISFMXDJSKH-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 235000006679 Mentha X verticillata Nutrition 0.000 description 1
- 235000002899 Mentha suaveolens Nutrition 0.000 description 1
- 235000001636 Mentha x rotundifolia Nutrition 0.000 description 1
- QWCRAEMEVRGPNT-UHFFFAOYSA-N buspirone Chemical compound C1C(=O)N(CCCCN2CCN(CC2)C=2N=CC=CN=2)C(=O)CC21CCCC2 QWCRAEMEVRGPNT-UHFFFAOYSA-N 0.000 description 1
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- 239000011245 gel electrolyte Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 235000008216 herbs Nutrition 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000002608 ionic liquid Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 229940041616 menthol Drugs 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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- 238000000465 moulding Methods 0.000 description 1
- 229920003217 poly(methylsilsesquioxane) Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000001007 puffing effect Effects 0.000 description 1
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- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
- A24F40/46—Shape or structure of electric heating means
- A24F40/465—Shape or structure of electric heating means specially adapted for induction heating
Definitions
- the present invention relates to a power supply unit for an aerosol generator.
- the power supply unit of the aerosol generator contains a circuit board for controlling heating. Since the power supply unit of the aerosol generator generates aerosol by heating, it is important to take measures to prevent malfunction. As countermeasures against noise such as static electricity, various countermeasures have been taken such as providing a coil in the circuit to smooth the noise.
- the power supply unit of the aerosol generator described in Patent Document 1 requires electronic components such as coils and capacitors as noise countermeasures. There was room for improvement.
- the present invention provides a power supply unit for an aerosol generator capable of suppressing the adverse effects of noise while reducing the number of parts.
- the power supply unit of the aerosol generator of the present invention comprises: a power supply; a heater connector connected to a load that consumes power supplied from the power source and generates aerosol from an aerosol source, or a coil that transmits power to the load by electromagnetic induction; a controller configured to control at least one of charging and discharging the power source; a circuit board on which the controller and the heater connector are mounted, The circuit board is wiring electrically connected to the control device and the heater connector; a conductive portion electrically connected to ground; an insulating film covering at least a portion of the wiring and the conductive portion; The surface of the circuit board is an insulating film forming part in which the insulating film is formed; and an insulating film non-forming portion where the insulating film is not formed, The insulating film non-forming portion is provided so that at least a portion of the conductive portion extending along the edge of the circuit board and positioned outside the wiring is exposed from the insulating film.
- FIG. 1 is a perspective view of an aerosol inhaler 1;
- FIG. 2 is another perspective view of the aerosol inhaler 1.
- FIG. 1 is a cross-sectional view of an aerosol inhaler 1;
- FIG. 2 is a perspective view of the power supply unit 10;
- FIG. 2 is an exploded perspective view of the power supply unit 10;
- FIG. 2 is a diagram showing a circuit configuration of the power supply unit 10;
- FIG. 2 is a perspective view of the power supply unit 10 with the case 11 removed;
- FIG. 7 is a diagram showing a main surface side surface layer 71a of the MCU-mounted substrate 7;
- FIG. 7 is a diagram showing a second wiring layer 74a of the MCU mounting substrate 7;
- FIG. 7 is a diagram showing a sub-surface side surface layer 71b of the MCU-mounted substrate 7;
- FIG. 7 is a diagram showing a fourth wiring layer 74b of the MCU mounting substrate 7;
- FIG. 4 is a diagram showing a positional relationship between an MCU mounting substrate 7 and discharge terminals 41.
- FIG. 4 is a cross-sectional view of the MCU mounting board 7.
- a power supply unit of an aerosol generator according to one embodiment of the present invention will be described below.
- an aerosol generator hereinafter referred to as an aerosol inhaler
- a power supply unit will be described with reference to FIGS. 1 to 3. while explaining.
- the aerosol inhaler 1 is a device for inhaling flavored aerosol without burning, and has a rod shape extending along a predetermined direction (hereinafter referred to as the X direction). As shown in FIGS. 1 and 2, the aerosol inhaler 1 includes a power supply unit 10, a first cartridge 20, and a second cartridge 30 arranged in this order along the X direction.
- the first cartridge 20 may be detachable from the power supply unit 10
- the second cartridge 30 is detachable from the first cartridge 20 .
- the first cartridge 20 and the second cartridge 30 are replaceable with respect to the power supply unit 10 .
- the second cartridge 30 is also replaceable with respect to the first cartridge 20 .
- the first cartridge 20 may be fitted and fixed to the power supply unit 10 so that the user cannot easily attach and detach the first cartridge 20 .
- the power supply unit 10 of this embodiment includes a battery pack BP, an MCU (Micro Controller Unit) 50, an MCU mounting board 7, and a receptacle mounted inside a cylindrical case 11. It is constructed by accommodating the substrate 8 and the like.
- the power supply BAT housed in the battery pack BP is a rechargeable secondary battery, an electric double layer capacitor, etc., preferably a lithium ion secondary battery.
- the electrolyte of the power supply BAT may be composed of one or a combination of a gel electrolyte, an electrolytic solution, a solid electrolyte, and an ionic liquid.
- a discharge terminal 41 is provided on the top portion 11a located on one end side (first cartridge 20 side) of the case 11 in the X direction.
- the discharge terminal 41 is composed of a positive discharge terminal 41a and a negative discharge terminal 41b.
- the "positive electrode side” means a higher potential side than the "negative electrode side”.
- the "negative side” means a lower potential side than the "positive side”. Therefore, the term “positive electrode side” and the term “negative electrode side” in the following description may be read as “high potential side” and “low potential side”, respectively.
- the positive discharge terminal 41a and the negative discharge terminal 41b are provided so as to protrude from the top portion 11a toward the first cartridge 20, and are configured to be electrically connectable to the heater 21 of the first cartridge 20.
- a low floor portion 11b having a height lower than that of the top portion 11a is provided around the top portion 11a.
- a charging opening 43 (see FIG. 2) that allows access to the charging terminal 42 is provided in the peripheral wall portion of the bottom portion 11c located on the other end side of the case 11 in the X direction (the side opposite to the first cartridge 20). be provided.
- the charging terminal 42 is electrically connected to an external power source such as an outlet or mobile battery to receive power supply, and in this embodiment, it is a USB (Universal Serial Bus) Type-C receptacle. It is not limited.
- the charging opening 43 may be provided on the bottom surface on the side of the bottom portion 11c instead of on the peripheral wall portion on the side of the bottom portion 11c.
- the charging terminal 42 may include, for example, a power receiving coil and be configured to be able to receive power transmitted from an external power source in a non-contact manner.
- the wireless power transfer method in this case may be an electromagnetic induction type, a magnetic resonance type, or a combination of the electromagnetic induction type and the magnetic resonance type.
- the charging terminal 42 may be connectable to various USB terminals or the like, and may have the power receiving coil described above. With such a configuration, the chances of charging the power supply BAT can be increased.
- an operation unit 14 that can be operated by the user is provided on the peripheral wall portion of the top portion 11a so as to face the side opposite to the charging opening 43.
- the operation unit 14 is composed of button-type switches, and is used to activate/deactivate the MCU 50 and various sensors reflecting the user's usage intention.
- the operation unit 14 may be configured by a touch panel or the like.
- the aerosol inhaler 1 is provided with a notification unit that notifies various information.
- the notification unit may be configured by a light emitting element, may be configured by a vibration element, or may be configured by a sound output element. Also, the notification unit may be a combination of two or more elements among the light emitting element, the vibration element, and the sound output element.
- the notification unit may be provided in any of the power supply unit 10, the first cartridge 20, and the second cartridge 30, but is preferably provided in the power supply unit 10 in order to shorten the lead wire (that is, the wiring distance) from the power supply BAT. preferable.
- the notification unit of the present embodiment includes an LED window 13 provided around the operation unit 14, and LED_L1 and LED_L2 (see FIGS. 6 and 8), which will be described later. The internal configuration of the power supply unit 10 will be described later.
- the first cartridge 20 has a reservoir 23 that stores the aerosol source 22 inside a cylindrical cartridge case 27, and atomizes and/or vaporizes the aerosol source 22 (hereinafter simply referred to as atomization). ), a wick 24 that draws the aerosol source from the reservoir 23 to the heater 21, an aerosol flow path 25 through which the aerosol generated by the atomization of the aerosol source 22 flows toward the second cartridge 30, a second and an end cap 26 that houses a portion of the cartridge 30 .
- the reservoir 23 is partitioned so as to surround the aerosol flow path 25 and stores the aerosol source 22 .
- the reservoir 23 may contain a porous material such as a resin web or cotton, and the porous material may be impregnated with the aerosol source 22 .
- the reservoir 23 may store only the aerosol source 22 without accommodating the resin web or the cotton-like porous body.
- Aerosol source 22 includes liquids such as glycerin, propylene glycol, and water. The storage amount of the aerosol source 22 in the reservoir 23 can be visually confirmed through a remaining amount confirmation window 28 (see FIGS. 1 and 2) provided in the first cartridge 20 .
- a gap (not shown) serving as an air intake port is formed between the remaining amount confirmation window 28 and the cartridge case 27, and outside air is drawn into the cartridge case 27 through this gap.
- the air intake port does not necessarily have to be provided around the remaining amount confirmation window 28 .
- a gap may be formed between the operation portion 14 provided in the power supply unit and the LED window 13, and outside air may be taken into the case 11 through the gap, or the charging opening 43 may be used.
- a communication hole may be provided in the wall surface of the cartridge case 27 or the case 11 to communicate the inside and the outside.
- the wick 24 is a liquid holding member that draws the aerosol source 22 from the reservoir 23 into the heater 21 by using capillary action, and is made of, for example, glass fiber or porous ceramic.
- the heater 21 atomizes the aerosol source 22 without combustion by power supplied from the power supply BAT via the discharge terminal 41 .
- the heater 21 is composed of a heating wire (coil) wound at a predetermined pitch.
- the heater 21 is an example of a load that can generate aerosol by atomizing the aerosol source 22, and the load is, for example, a heating element or an ultrasonic generator. Heating elements include heating resistors, ceramic heaters, induction heaters, and the like.
- the aerosol flow path 25 is provided downstream of the heater 21 and on the center line L of the power supply unit 10 (case 11).
- the center line L is a line that continuously connects the center points of the power supply unit 10 (case 11) in the X direction when the power supply unit 10 (case 11) is cut along a plane perpendicular to the X direction.
- the end cap 26 includes a cartridge accommodating portion 26a that accommodates a portion of the second cartridge 30, and a communicating passage 26b that communicates the aerosol flow path 25 and the cartridge accommodating portion 26a.
- the second cartridge 30 stores the flavor source 31 .
- the second cartridge 30 is detachably housed in a cartridge housing portion 26 a provided in the end cap 26 of the first cartridge 20 .
- the second cartridge 30 has a user's mouthpiece 32 at the end opposite to the first cartridge 20 side.
- the suction port 32 is not limited to being configured integrally with the second cartridge 30 , and may be configured to be detachable from the second cartridge 30 .
- the second cartridge 30 passes the aerosol generated by atomizing the aerosol source 22 by the heater 21 through the flavor source 31 to add flavor to the aerosol.
- the raw material piece constituting the flavor source 31 cut tobacco or a molded body obtained by molding tobacco raw material into granules can be used.
- the flavor source 31 may be composed of plants other than tobacco (for example, mint, Chinese medicine, herbs, etc.).
- the flavor source 31 may be provided with a flavor such as menthol.
- the aerosol with added flavor can be generated by the aerosol source 22, the flavor source 31, and the heater 21. That is, the aerosol source 22 and the flavor source 31 can be said to be aerosol generating sources that generate aerosol.
- the configuration of the aerosol generation source used in the aerosol inhaler 1 includes a configuration in which the aerosol source 22 and the flavor source 31 are separated, and a configuration in which the aerosol source 22 and the flavor source 31 are integrally formed. , a configuration in which the flavor source 31 is omitted and a substance that can be contained in the flavor source 31 is added to the aerosol source 22, or a configuration in which a drug or the like is added to the aerosol source 22 instead of the flavor source 31.
- the heater 21 atomizes the aerosol source 22 drawn or displaced from the reservoir 23 by the wick 24 .
- the aerosol generated by atomization flows through the aerosol flow path 25 together with the air that has flowed in from a gap (not shown) that serves as an air intake port formed between the remaining amount confirmation window 28 and the cartridge case 27, and flows through the communication path. 26b to the second cartridge 30.
- the aerosol supplied to the second cartridge 30 is flavored by passing through the flavor source 31 and supplied to the mouthpiece 32 .
- the receptacle mounting board 8 includes, as main electronic components, a charging terminal 42 which is a receptacle into which a USB Type-C plug (hereinafter simply referred to as a USB plug) can be inserted, the receptacle mounting board 8, and the MCU mounting board 7.
- the board connection cable Cb1 is an FPC (Flexible Printed Circuit) cable having six printed wirings, but is not limited to this.
- the electronic parts shown within the range surrounded by the two-dot chain line are the electronic parts mounted on the MCU mounting board 7 .
- the MCU-mounted board 7 includes, as main electronic components, an MCU-mounted board-side connector Cn2 to which the other end of the board connection cable Cb1 is connected, an MCU 50 that controls the entire aerosol inhaler 1 including the power supply unit 10, A charging IC (Integrated Circuit) 55 that charges the power supply BAT, etc., a protection IC 61 that protects the charging IC 55, an LDO (Low Dropout) regulator 62 that supplies a predetermined voltage to the MCU 50, etc., and a user's puff (suction).
- Integrated Circuit Integrated Circuit
- LDO Low Dropout
- a battery pack including a suction sensor 15 for detecting operation, a discharge terminal 41 (41a, 41b) to which a heater 21 is connected, a DC/DC converter 63 capable of supplying power to the discharge terminal 41, and a power supply BAT. and a battery connector Cn3 to which a battery connection cable Cb2 that connects the BP and the MCU-mounted board 7 is connected.
- the MCU 50, the charging IC 55, the protection IC 61, the LDO regulator 62, the suction sensor 15, and the DC/DC converter 63 are configured by, for example, chipping a plurality of circuit elements, and electrically connect the inside and outside of the device.
- a pin is provided as a terminal for The details of the pins included in each of these chipped electronic components will be described later. It should be noted that, in this specification and the like, only major pins among the pins included in each of these chipped electronic components are described.
- the battery pack BP includes a power supply BAT, a fuse FS connected to the positive terminal of the power supply BAT, and a thermistor TH connected to the negative terminal of the power supply BAT and arranged close to the power supply BAT.
- the thermistor TH is mainly an element having NTC (Negative Temperature Coefficient) characteristics or PTC (Positive Temperature Coefficient) characteristics, that is, an element that has a correlation between electrical resistance and temperature.
- the battery connection cable Cb2 that connects the battery pack BP and the MCU mounting board 7 is an FPC cable having three printed patterns, but it is not limited to this.
- the battery connection cable Cb2 may be connected with three wires.
- the wiring indicated by the thick solid line is the wiring connected to the ground provided in the power supply unit 10 (for example, the wiring configured by the ground pattern 78 shown in FIGS. 9 and 11 to be described later).
- this wiring has the same potential as the reference potential (ground potential) in the power supply unit 10, and is hereinafter also referred to as a ground line.
- main wirings other than the ground line include a VBUS line Ln1, a VBAT line Ln2, a D+ line Ln3a, a D ⁇ line Ln3b, a power-path line Ln4, and a VSYS line Ln4.
- a line Ln5 and a VHEAT line Ln6 are provided.
- Each of these lines (wiring) is mainly composed of a conductive pattern formed on the MCU mounting board 7 . Electronic components connected to these lines will be described later.
- a board connection cable Cb1 a receptacle mounting board-side connector Cn1, and an MCU mounting board-side connector Cn2, which are electronic components that connect the receptacle mounting board 8 and the MCU mounting board 7, are combined to form a board connection. Also referred to as part CN.
- the charging terminals 42 are the A1 pin, A4 pin, A5 pin, A6 pin, A7 pin, A8 pin, A9 pin, A12 pin, B1 pin, B4 pin, B5 pin, B6 pin, B7 pin, It has pins (terminals) connected to the B8 pin, B9 pin, and B12 pin, respectively.
- the pin of the charging terminal 42 corresponding to the Bn pin of the USB plug is also called the Bn pin of the charging terminal 42 .
- the A1 pin, A12 pin, B1 pin, and B12 pin of the charging terminal 42 corresponding to the GND (ground) pin of the USB plug are connected to the ground line.
- the A4 pin, A9 pin, B4 pin, and B9 pin of the charging terminal 42 corresponding to the V BUS pin of the USB plug are connected to the high potential side of the charging IC 55 via the board connection portion CN, the VBUS line Ln1, and the protection IC 61. It is connected to the VBUS pin, which is a power supply terminal.
- power for example, USB bus power
- the charging IC 55 used can charge the power supply BAT and supply power to the MCU 50 .
- the protection IC 61 provided between the charging terminal 42 and the charging IC 55 is detailed. , an OUT pin that is an output terminal for outputting a first system voltage Vs1 to be described later, a CE pin for turning on and off the operation of the protection IC 61 (hereinafter also referred to as on/off), and a power supply BAT. and a VBAT pin for sensing the state.
- the A4 pin and B9 pin of the charging terminal 42 and the A9 pin and B4 pin are connected in parallel to the IN pin of the protection IC 61 via the substrate connection portion CN and the VBUS line Ln1.
- the IN pin of the protection IC 61 is connected to the A4 pin and B9 pin of the charging terminal 42 and the A9 pin and B4 pin, respectively.
- the VSS pin, GND pin and CE pin of the protection IC 61 are connected to the ground line.
- the OUT pin of protection IC 61 is connected to the VBUS pin of charging IC 55 .
- the VBAT pin of the protection IC 61 is connected to the positive terminal (that is, high potential side) of the power supply BAT via the VBAT line Ln2, battery connector Cn3, battery connection cable Cb2, and fuse FS.
- the negative terminal (that is, the low potential side) of the power supply BAT is connected to the ground line via the battery connection cable Cb2 and the battery connector Cn3.
- the protection IC 61 is supplied with a power supply voltage based on the difference between the potential of the IN pin and the potential of the VSS pin, and operates when the input to the CE pin is at a low level to apply a predetermined first system voltage Vs1 to the OUT pin. and detects whether the power supply BAT is connected based on the input voltage to the VBAT pin.
- the charging IC 55 in this embodiment is enabled by inputting a low level to the CE pin, and therefore operates in negative logic.
- a positive logic protection IC 61 that is enabled by inputting a high level to the CE pin may be used.
- the CE pin is preferably connected to the IN pin so that a high level is input to the CE pin.
- pins A4, A9, B4 and B9 of the charging terminal 42 are connected. is supplied with a predetermined USB voltage (for example, 5 [V]) from an external power supply. As a result, this USB voltage is supplied to the protection IC 61 as a power supply voltage. Also, since the CE pin of the protection IC 61 is grounded, the input voltage to this CE pin is always low level. Therefore, the protection IC 61 outputs the first system voltage Vs1 to the charging IC 55 in response to the USB voltage being supplied from the external power supply via the charging terminal 42 .
- a predetermined USB voltage for example, 5 [V]
- the first system voltage Vs1 output by the protection IC 61 has a voltage value within the recommended input voltage range of the charging IC 55 (for example, the range of 4.35 to 6.4 [V]).
- the protection IC 61 uses the input voltage to the IN pin as the first system voltage Vs1 as it is. Output from the OUT pin.
- the protection IC 61 detects a predetermined voltage (for example, 5.5 ⁇ 0.2 [V]), and the converted voltage is output from the OUT pin as the first system voltage Vs1.
- the protection IC 61 opens a circuit (not shown) in the protection IC 61 that connects the IN pin and the OUT pin when a high voltage exceeding the maximum value of the recommended input voltage of the charging IC 55 is input to the IN pin.
- the high voltage input to the IN pin may be prevented from being output from the OUT pin.
- the protection IC 61 can detect whether or not the power supply BAT is connected based on the input voltage to the VBAT pin.
- the protection IC 61 may use the detection result of whether or not the power supply BAT is connected in its own device, or may output it to the outside of its own device (for example, the MCU 50 or the charging IC 55).
- the protection IC 61 may have various protection functions for protecting the electric circuit of the power supply unit 10, such as an overcurrent detection function and an overvoltage detection function, in addition to the function of protecting the charging IC 55 described above.
- a capacitor (also called a smoothing capacitor or a bypass capacitor) Cd1 for stabilizing (smoothing) the input to the IN pin of the protection IC 61 is connected to the VBUS line Ln1 as needed. connected as appropriate.
- a capacitor Cd2 is required between the OUT pin of the protection IC 61 and the VBUS pin of the charging IC 55 to stabilize the input to the VBUS pin of the charging IC 55 (that is, the first system voltage Vs1 output from the protection IC 61). are connected as appropriate.
- the A4 pin, A9 pin, B4 pin, and B9 pin of the charging terminal 42 connected to the IN pin of the protection IC 61 are also connected to the ground line via a varistor (Variable Resistor: non-linear resistance element) VR1.
- a varistor Variable Resistor: non-linear resistance element
- the A6 pin and B6 pin of the charging terminal 42 corresponding to the Dp (also called D+) 1 pin or Dp2 pin of the USB plug are connected to the PA11 pin of the MCU 50 via the board connection portion CN and the D+ line Ln3a. Also, the A7 pin and B7 pin of the charging terminal 42 corresponding to the Dn (also called D-) 1 pin or Dp2 pin of the USB plug are connected to the PA12 pin of the MCU 50 via the board connection portion CN and the D- line Ln3b. be done.
- the D+ line Ln3a and the D ⁇ line Ln3b are connected. It enables serial communication using two signal lines. Communication methods other than serial communication may be used for communication between the external device and the MCU 50 .
- the A6 pin and B6 pin of the charging terminal 42 connected to the PA11 pin of the MCU 50 are also connected to the ground line via the varistor VR2.
- the static electricity can be released to the ground line via the varistor VR2. Therefore, it is possible to protect the MCU 50 from static electricity generated at the A6 or B6 pin of the charging terminal 42 .
- a resistor R11 is provided between the A6 and B6 pins of the charging terminal 42 and the PA11 pin of the MCU 50, the large current input to the PA11 pin of the MCU 50 can be prevented by the resistor R11. can also be suppressed by
- a resistor is an element having a predetermined electrical resistance value, which is composed of a resistive element, a transistor, or the like.
- the A7 pin and B7 pin of the charging terminal 42 connected to the PA12 pin of the MCU 50 are also connected to the ground line via the varistor VR3.
- the static electricity can be released to the ground line via the varistor VR3. Therefore, it is possible to protect the MCU 50 from static electricity generated at the A7 pin or the B7 pin of the charging terminal 42 .
- the power supply unit 10 there is no problem even if the MCU 50 does not recognize whether the USB plug is inserted into the charging terminal 42 in the upside-up direction or the upside-down direction. Therefore, the A5 pin and B5 pin of the charging terminal 42 corresponding to the CC1 pin or CC2 pin of the USB plug are connected to the ground line. Furthermore, the A8 pin and B8 pin of the charging terminal 42 corresponding to the SBU1 pin or SBU2 pin of the USB plug are not connected to the electric circuit of the power supply unit 10 . That is, since these pins of the charging terminal 42 are not used in the power supply unit 10, they can be omitted as appropriate. By doing so, it is possible to prevent the circuit configuration of the power supply unit 10 from becoming complicated.
- the charging IC 55 has a VBUS pin, which is one of power supply terminals on the high potential side, a GND pin, which is a power supply terminal on the low potential side, and a BAT_1 pin, which is an input/output terminal used for power transfer between the charging IC 55 and the power supply BAT. and a BAT_2 pin, a BAT_SNS pin as a detection terminal for detecting input to or output from the power supply BAT, and SYS_1, SYS_2, SW_1, and SW_2 as output terminals for outputting a second system voltage Vs2 described later. and a CE pin for turning on/off the operation of the charging IC 55 .
- the BAT_1 pin and the BAT_2 pin can also function as high-potential-side power supply terminals in the charging IC 55 .
- the VBUS pin of the charging IC 55 is connected to the OUT pin of the protection IC 61 as described above.
- the BAT_1 pin, BAT_2 pin, and BAT_SNS pin of the charging IC 55 are connected to the positive terminal of the power supply BAT via the VBAT line Ln2, battery connector Cn3, battery connection cable Cb2, and fuse FS.
- the SYS_1 pin, SYS_2 pin, SW_1 pin, and SW_2 pin of the charging IC 55 are connected via the power path line Ln4 to the IN pin, which is the power supply terminal on the high potential side of the LDO regulator 62, and the high potential side of the DC/DC converter 63. It is connected to the VIN pin which is a power supply terminal.
- the SW_1 pin and the SW_2 pin are connected to the power path line Ln4 via the reactor Rc1.
- the CE pin of the charging IC 55 is connected to the PB14 pin of the MCU 50 .
- the charging IC 55 is supplied with a power supply voltage based on the difference between the potential of the VBUS pin, BAT_1 pin, or BAT_2 pin and the potential of the GND pin, and operates when the input to the CE pin is at a high level. It performs charging, and supplies power discharged from the power supply BAT to the LDO regulator 62, the DC/DC converter 63, and the like.
- the charging IC 55 in this embodiment is enabled by inputting a high level to the CE pin, and therefore operates in positive logic.
- a negative logic charging IC 55 that is enabled by inputting a low level to the CE pin may be used.
- the charging IC 55 applies a voltage (for example, the first system voltage Vs1 ).
- the output voltage (terminal voltage) of the power supply BAT is input to the BAT_1 pin and the BAT_2 pin.
- the charging IC 55 applies the second system voltage Vs2 according to the input voltages to the BAT_1 pin and the BAT_2 pin from the SYS_1 pin, the SYS_2 pin, the SW_1 pin, and the SW_2 pin to the LDO regulator 62, DC/DC converter 63, etc.
- Output for The second system voltage Vs2 is, for example, the output voltage itself of the power supply BAT, and specifically can be a voltage of about 3 to 4 [V].
- the charging IC 55 further includes an SCL pin connected to the PB8 pin of the MCU50 and an SDA pin connected to the PB9 pin of the MCU50.
- I2C Inter-Integrated Circuit
- the charging IC 55 transmits, for example, battery information regarding the power supply BAT to the MCU 50 .
- the battery information is, for example, information indicating the charging state of the power supply BAT by the charging IC 55 (for example, charging or charging stopped), the remaining amount of the power supply BAT (SOC: State Of Charge), and the like.
- Communication between the charging IC 55 and the MCU 50 may employ a communication method other than the I2C communication.
- the charging IC 55 may further include an ISET pin, an ILIM pin, a TS pin, and the like. If the charging IC 55 has an ISET pin, the electric resistance value of the resistor connected between the ISET pin and the ground line can be used to set the current value output from the charging IC 55 to the power supply BAT. When the charging IC 55 has an ILIM pin, the current value output from the charging IC 55 to the LDO regulator 62, the DC/DC converter 63, etc. is determined by the electrical resistance value of the resistor connected between the ILIM pin and the ground line. can be set. If the charging IC 55 has a TS pin, the charging IC 55 can detect the electrical resistance value and temperature of the resistor connected to the TS pin based on the input voltage to this TS pin.
- a capacitor Cd3 for stabilizing the input to the BAT_SNS pin of the charging IC 55 is appropriately connected to the VBAT line Ln2 as required. Further, the power path line Ln4 is provided with a capacitor Cd4 for stabilizing the second system voltage Vs2 output from the charging IC 55, and a capacitor Cd5 for stabilizing the input to the IN pin of the LDO regulator 62. connected as appropriate.
- the power path line Ln4 to which the second system voltage Vs2 output from the charging IC 55 is supplied further includes a first LED circuit Cc1 for operating (for example, lighting) the LED_L1 and a second LED circuit Cc2 for operating the LED_L2. is connected.
- the first LED circuit Cc1 is configured by connecting in series an LED_L1 and a switch Sw1 that switches conduction and interruption of the first LED circuit Cc1.
- One end of the first LED circuit Cc1 is connected to the power path line Ln4, and the other end is connected to the ground line.
- the switch Sw1 of the first LED circuit Cc1 is turned on in response to an on command from the MCU50 and turned off in response to an off command from the MCU50.
- the switch Sw1 When the switch Sw1 is turned on, the first LED circuit Cc1 becomes conductive, the second system voltage Vs2 output from the charging IC 55 is supplied to the LED_L1, and the LED_L1 lights up.
- the switch Sw1 for example, a switch composed of a MOSFET can be adopted.
- the gate terminal of the MOSFET that constitutes the switch Sw1 is connected to the PA0 pin of the MCU 50, and the MCU 50 controls the output from the PA0 pin so that the gate terminal of the switch Sw1 is supplied with The gate voltage is changed to turn on or off the switch Sw1.
- the switch Sw1 is not limited to a MOSFET, and may be a switch that is turned on/off under the control of the MCU50.
- the second LED circuit Cc2 is configured by connecting in series LED_L2 and a switch Sw2 that switches conduction and interruption of the second LED circuit Cc2.
- One end of the second LED circuit Cc2 is connected to the power path line Ln4, and the other end is connected to the ground line.
- the switch Sw2 of the second LED circuit Cc2 is turned on in response to an on command from the MCU50 and turned off in response to an off command from the MCU50.
- the switch Sw2 is turned on, the second LED circuit Cc2 becomes conductive, the second system voltage Vs2 output from the charging IC 55 is supplied to the LED_L2, and the LED_L2 lights up.
- a switch composed of a MOSFET can be employed as the switch Sw2.
- the gate terminal of the MOSFET that constitutes the switch Sw2 is connected to the PB3 pin of the MCU 50, and the MCU 50 controls the output from the PB3 pin so that the voltage is applied to the gate terminal of the switch Sw2.
- the switch Sw2 is turned on or off.
- the switch Sw2 is not limited to a MOSFET, and may be a switch that is turned on/off under the control of the MCU50.
- the LDO regulator 62 has an IN pin that is a power supply terminal on the high potential side, a GND pin that is a power supply terminal on the low potential side, an OUT pin that is an output terminal for outputting a third system voltage Vs3 described later, and the operation of the LDO regulator 62. and an EN pin for turning on/off the .
- the IN pin of the LDO regulator 62 is connected to the SYS_1 pin, SYS_2 pin, etc. of the charging IC 55 via the power path line Ln4, as described above.
- the GND pin of LDO regulator 62 is connected to the ground line.
- the OUT pin of the LDO regulator 62 is connected to the VDD pin, which is the high-potential power terminal of the MCU 50, and the VDD pin, which is the high-potential power terminal of the suction sensor 15, via the VSYS line Ln5.
- the EN pin of LDO regulator 62 is connected to power path line Ln4.
- the LDO regulator 62 is supplied with a power supply voltage based on the difference between the potential of the IN pin and the potential of the GND pin, and operates when the input voltage to the EN pin is at a high level to generate a predetermined third system voltage Vs3. and output from the OUT pin.
- the LDO regulator 62 in this embodiment is a positive logic operation because it is enabled by inputting a high level to the EN pin.
- a positive logic LDO regulator 62 that is enabled by inputting a low level to the EN pin may be used.
- the EN pin is preferably connected to the ground line so that a low level is always input to the EN pin.
- the LDO regulator 62 in response to the charging IC 55 outputting the second system voltage Vs2, the LDO regulator 62 is supplied with the second system voltage Vs2 as the power supply voltage. Further, when the charging IC 55 outputs the second system voltage Vs2, the input voltage to the EN pin of the LDO regulator 62 becomes the second system voltage Vs2 (that is, high level). Therefore, when the charging IC 55 outputs the second system voltage Vs2, the LDO regulator 62 generates the third system voltage Vs3 and outputs the generated third system voltage Vs3 to the MCU 50, the suction sensor 15, and the like.
- the third system voltage Vs3 output by the LDO regulator 62 has a voltage value suitable for operating the MCU 50, the suction sensor 15, and the like.
- the third system voltage Vs3 is a voltage lower than the second system voltage Vs2, and can be set to 2.5 [V], for example.
- the VSYS line Ln5 to which the third system voltage Vs3 output from the LDO regulator 62 is supplied, further includes an operation switch circuit Cc3 for detecting the user's operation of the operation switch OPS, and an operation switch circuit Cc3 for detecting the temperature of the power supply BAT. is connected to the power supply temperature detection circuit Cc4.
- the operation switch circuit Cc3 is composed of a resistor R1, a resistor R2, a resistor R3, and an operation switch OPS.
- the resistor R1 has one end connected to the VSYS line Ln5 and the other end connected to one end of each of the resistors R2 and R3.
- the other end of the resistor R2 is connected to the PC4 pin of the MCU 50, and the other end of the resistor R3 is connected to one end of the operation switch OPS.
- the other end of the operation switch OPS is connected to the ground line.
- the PC4 pin of the MCU 50 receives a voltage obtained by stepping down the third system voltage Vs3 supplied to the VSYS line Ln5 by the resistors R1 and R2.
- the third system voltage Vs3 supplied to the VSYS line Ln5 is applied to the PC4 pin of the MCU 50 after being divided by the resistors R1 and R3.
- a voltage stepped down by R2 is input. Therefore, the MCU 50 can detect whether or not the operation switch OPS is operated by the user based on the input voltage to the PC4 pin.
- the power supply temperature detection circuit Cc4 is configured by connecting in series a thermistor TH, a resistor R4, and a switch Sw3 for switching conduction and interruption of the power supply temperature detection circuit Cc4.
- One end of the power supply temperature detection circuit Cc4 on the switch Sw3 side is connected to the VSYS line Ln5, and the other end of the power supply temperature detection circuit Cc4 on the thermistor TH side is connected to the ground line.
- the PC1 pin of the MCU 50 is connected to the connection point CP between the resistor R4 and the thermistor TH in the power supply temperature detection circuit Cc4.
- the switch Sw3 of the power supply temperature detection circuit Cc4 is turned on in response to an on command from the MCU50, and turned off in response to an off command from the MCU50.
- the power supply temperature detection circuit Cc4 becomes conductive, and the third system voltage Vs3 supplied to the VSYS line Ln5 is divided by the electrical resistance value of the resistor R4 and the electrical resistance value of the thermistor TH.
- a voltage is input to the PC1 pin of MCU 50 .
- the MCU 50 can detect the temperature of the thermistor TH (that is, the temperature of the power supply BAT) based on the input voltage to the PC1 pin when the switch Sw3 is turned on.
- the switch Sw3 may employ, for example, a switch configured by a MOSFET.
- the gate terminal of the MOSFET that constitutes the switch Sw3 is connected to the PA8 pin of the MCU 50, and the MCU 50 controls the output from the PA8 pin so that the gate terminal of the switch Sw3 is supplied with By changing the gate voltage, the switch Sw3 is turned on or off.
- the switch Sw3 is not limited to a MOSFET, and may be any switch that is turned on/off under the control of the MCU50.
- the DC/DC converter 63 has a VIN pin that is a power supply terminal on the high potential side, a GND pin that is a power supply terminal on the low potential side, a SW pin to which a voltage is input, and an output terminal for outputting a fourth system voltage Vs4, which will be described later. , an EN pin for turning on/off the operation of the DC/DC converter 63, and a MODE pin for setting the operation mode of the DC/DC converter 63.
- the VIN pin of the DC/DC converter 63 is connected to the SYS_1 pin, SYS_2 pin, etc. of the charging IC 55 via the power path line Ln4, as described above.
- a GND pin of the DC/DC converter 63 is connected to the ground line.
- the SW pin of DC/DC converter 63 is connected to power path line Ln4 via reactor Rc2.
- the VOUT pin of the DC/DC converter 63 is connected to the positive discharge terminal 41a, which is the positive terminal (that is, the high potential side) of the discharge terminal 41, via the VHEAT line Ln6.
- the EN pin of the DC/DC converter 63 is connected to the PB2 pin of MCU50.
- a MODE pin of the DC/DC converter 63 is connected to the power path line Ln4.
- a negative electrode side discharge terminal 41b which is the negative electrode terminal (that is, the low potential side) of the discharge terminal 41, is connected to the ground line.
- the DC/DC converter 63 is supplied with a power supply voltage based on the difference between the potential of the VIN pin and the potential of the GND pin, and operates when the input voltage to the EN pin is at a high level to boost the input voltage. output from the VOUT pin.
- the DC/DC converter 63 in this embodiment is a positive logic operation because it is enabled by inputting a high level to the EN pin.
- a negative logic DC/DC converter 63 that is enabled by inputting a low level to the EN pin may be used.
- the DC/DC converter 63 in response to the charging IC 55 outputting the second system voltage Vs2, the DC/DC converter 63 is supplied with the second system voltage Vs2 as the power supply voltage. Also, the MCU 50 inputs a high-level voltage signal to the EN pin of the DC/DC converter 63 when determining to heat the heater 21 in response to an aerosol generation request or the like. As a result, the DC/DC converter 63 outputs a fourth system voltage Vs4 obtained by boosting the voltage input to the DC/DC converter 63 to the discharge terminal 41 (that is, the heater 21).
- the fourth system voltage Vs4 output by the DC/DC converter 63 has a voltage value suitable for heating the heater 21.
- the fourth system voltage Vs4 is a voltage higher than the third system voltage Vs3, and can be set to a voltage of approximately 4.2 [V], for example.
- the DC/DC converter 63 is, for example, a switching regulator, and can take a pulse width modulation mode (hereinafter also referred to as PWM mode) and a pulse frequency modulation mode (hereinafter also referred to as PFM mode) as operation modes.
- PWM mode pulse width modulation mode
- PFM mode pulse frequency modulation mode
- the MODE pin of the DC/DC converter 63 is connected to the power path line Ln4 so that the input voltage to the MODE pin becomes high level when the DC/DC converter 63 can operate.
- the DC/DC converter 63 is operated in PWM mode.
- the VHEAT line Ln6 is provided with a switch Sw4 that switches between conduction and interruption of the VHEAT line Ln6.
- the switch Sw4 is turned on in response to an on command from the MCU50, and turned off in response to an off command from the MCU50.
- the switch Sw4 is turned on, the VHEAT line Ln6 becomes conductive, and the fourth system voltage Vs4 output from the DC/DC converter 63 is supplied to the discharge terminal 41 (specifically, the positive discharge terminal 41a). Heater 21 is heated. This allows the aerosol source to be atomized or vaporized to produce an aerosol.
- a switch composed of, for example, a MOSFET can be used as the switch Sw4. More specifically, the switch Sw4 is desirably a power MOSFET with a high switching speed.
- the gate terminal of the MOSFET that constitutes the switch Sw4 is connected to the PB4 pin of the MCU 50, and the MCU 50 controls the output from the PB4 pin to apply to the gate terminal of the switch Sw4. By changing the gate voltage, the switch Sw4 is turned on or off.
- VHEAT line Ln6 (Other electronic components connected to VHEAT line Ln6) If the voltage supplied to the discharge terminal 41 becomes unstable, the amount of aerosol generated by the heater 21 may vary, leading to deterioration in flavor and taste. Therefore, as shown in FIG. 6, a capacitor for stabilizing the fourth system voltage Vs4 output from the DC/DC converter 63 is connected to the VHEAT line Ln6.
- the power supply unit 10 three capacitors, a capacitor Cd61, a capacitor Cd62, and a capacitor Cd63, are connected in parallel as capacitors for stabilizing the fourth system voltage Vs4 output from the DC/DC converter 63. are provided.
- stabilizing smoothing the voltage with a plurality of capacitors in this way, the heat generated due to the stabilization of the voltage can be distributed to the plurality of capacitors. Therefore, compared with the case where the voltage is stabilized by one capacitor, it is possible to avoid the capacitor from becoming hot and suppress deterioration and failure of the capacitor.
- a high voltage value is required for the fourth system voltage Vs4. If such a high voltage were to be stabilized by a single capacitor, it would be expected that this capacitor would reach a very high temperature. As a result, not only the capacitor, which has reached a high temperature, is significantly deteriorated, but also other electronic components arranged around this capacitor may be adversely affected. Therefore, as described above, it is desirable to stabilize the fourth system voltage Vs4 using a plurality of capacitors.
- the capacitor Cd61 has a relatively small electrostatic capacity, and accordingly has a relatively small physical size.
- the capacitor Cd62 and the capacitor Cd63 have relatively large electrostatic capacitances, and correspondingly have relatively large physical sizes.
- the capacitance of the capacitor Cd61 can be 0.1 [ ⁇ F]
- the capacitance of the capacitors Cd62 and Cd63 can be 50 [ ⁇ F].
- a varistor VR4 is provided between the discharge terminal 41 and the switch Sw4 in the VHEAT line Ln6. More specifically, one end of the varistor VR4 is connected to the VHEAT line Ln6 and the other end is connected to the ground line.
- a capacitor Cd7 is also connected between the discharge terminal 41 and the switch Sw4 for stabilizing the voltage supplied to the discharge terminal 41 via the switch Sw4.
- this capacitor Cd7 can also function as a protection component that protects the system of the power supply unit 10, such as the switch Sw4 and the DC/DC converter 63, from noise such as static electricity generated at the discharge terminal 41.
- FIG. Therefore, the capacitor Cd7 can also protect the system of the power supply unit 10 such as the switch Sw4 and the DC/DC converter 63 from noise such as static electricity generated at the discharge terminal 41.
- the suction sensor 15 includes a VDD pin that is a high-potential power terminal, a GND pin that is a low-potential power terminal, and an OUT pin that is an output terminal.
- the VDD pin of the suction sensor 15 is connected to the OUT pin of the LDO regulator 62 via the VSYS line Ln5 as described above.
- a GND pin of the suction sensor 15 is connected to the ground line.
- the OUT pin of the suction sensor 15 is connected to the PC5 pin of the MCU50.
- the suction sensor 15 operates when a power supply voltage is supplied by the difference between the potential of the VDD pin and the potential of the GND pin. Specifically, the suction sensor 15 operates by being supplied with the third system voltage Vs3 output from the LDO regulator 62 as a power supply voltage, and functions as a sensor device that detects the user's puffing action.
- the suction sensor 15 is mainly composed of a condenser microphone or a pressure sensor, and sends a signal indicating the value of the pressure (internal pressure) change in the power supply unit 10 caused by suction by the user as a detection result from the OUT pin to the MCU 50. output.
- a sensor device other than a condenser microphone or a pressure sensor may be employed as the suction sensor 15 .
- the MCU 50 includes a VDD pin that is a high-potential power terminal, a VSS pin that is a low-potential power terminal, and a plurality of pins (hereinafter also referred to as input/output pins) that function as input terminals or output terminals.
- the MCU 50 operates by being supplied with a power supply voltage based on the difference between the potential of the VDD pin and the potential of the VSS pin.
- the MCU 50 Since the MCU 50 has the aforementioned PA11 pin and PA12 pin as input/output pins, it can communicate with an external device using these pins, and can acquire, for example, firmware update data from the external device. Further, since the MCU 50 has the PB8 pin and the PB9 pin as input/output pins, it can communicate with the charging IC 55 using these pins, and can acquire the above-described battery information and the like from the charging IC 55 .
- the charging IC 55 is turned on/off by the output from the PB14 pin, and the DC/DC converter 63 is turned on/off by the output from the PB2 pin. can be individually controlled.
- the switch Sw1 is activated by the output from the PA0 pin, the switch Sw2 by the output from the PB3 pin, and the switch Sw2 by the output from the PA8 pin.
- the switch Sw3 can be turned on/off by the output from the PB4 pin, and the switch Sw4 can be turned on/off by the output from the PB4 pin.
- the MCU 50 Since the MCU 50 has the PC5 pin, the PC4 pin, and the PC1 pin as input/output pins, the user's puff action is performed based on the input to the PC5 pin, and the user's operation switch OPS is operated based on the input to the PC4 pin. , the temperature of the thermistor TH (that is, the temperature of the power supply BAT) can be detected based on the input to the PC1 pin when the switch Sw3 is turned on.
- FIG. 1 An insulating chassis 12 is provided in the inner space of the case 11, and a charging terminal 42 (see FIG. 3), a receptacle mounting board 8, a battery pack BP including a power supply BAT, and an MCU mounting board 7 are arranged from the bottom part 11c to the top. They are held by the chassis 12 in this order toward the portion 11a.
- the case 11 has the above-described charging opening 43 that allows access to the charging terminal 42, an operation opening that exposes the operation portion 14 to the outside, and a pair of discharge terminals 41 that expose the discharge terminal 41 to the outside from the top portion 11a. An opening is provided.
- the MCU mounting board 7 is a multi-layer board configured by laminating a plurality of layers, and has a substantially rectangular shape.
- the MCU mounting board 7 is arranged such that its longitudinal direction is along the extending direction (X direction) of the center line L of the case 11 and one element mounting surface thereof faces the operation section 14 .
- the X direction is sometimes referred to as the longitudinal direction
- the top portion 11a side is referred to as the X1 direction
- the bottom portion 11c side is referred to as the X2 direction.
- the direction orthogonal to the longitudinal direction X is called a lateral direction Y, and in the lateral direction Y, one side (the left side in FIG. 7, the upper side in FIGS. 10 and 11) is referred to as the Y1 direction, and the other side (the right side in FIG. 7, the lower side in FIGS. 8 and 9 and the upper side in FIGS. 10 and 11) is referred to as the Y2 direction.
- the centerline of the MCU mounting board 7 coincides with the centerline L of the power supply unit 10 (case 11) extending in the X direction.
- the center line of the MCU mounting board 7 is the center point of the width direction (transverse direction) and thickness direction of the MCU mounting board 7 when the MCU mounting board 7 is cut along a plane orthogonal to the longitudinal direction X. It is a line connected continuously to X.
- the MCU mounting board 7 is composed of a rectangular portion 81 that occupies most of the MCU mounting board 7 and a projecting portion 82 projecting from the rectangular portion 81 in the X1 direction. Both ends of the projecting portion 82 in the lateral direction Y are notched, and the X1-direction end of the projecting portion 82 faces the top portion 11a of the case 11. The X1 direction end faces the low floor portion 11b of the case 11 .
- the MCU mounting board 7 Assuming that the surface of the MCU mounting board 7 on the operation unit 14 side is the main surface 7a and the opposite side is the subsurface 7b, the MCU mounting board 7 has both the main surface 7a and the subsurface 7b on which electronic components are mounted. It is a mounting board.
- a battery connector Cn3, an MCU 50, an operation switch OPS, LED_L1, LED_L2, a DC/DC converter 63, a DC/DC converter 63, A reactor Rc2 of the DC/DC converter 63, a switch Sw4, a positive discharge terminal 41a, and the like are mounted.
- a button-type operation switch OPS is mounted substantially in the center of the main surface 7a so as to face the operation unit 14. Thereby, the user can push down the operation switch OPS through the operation portion 14 of the case 11 .
- a pair of LED_L1 and LED_L2 are mounted in the vicinity of the operation switch OPS so as to sandwich the operation switch OPS in the lateral direction Y. As shown in FIG. Thereby, the user can visually recognize the light emitted from LED_L1 and LED_L2 through the LED window 13 provided around the operation unit 14 .
- the battery connector Cn3 is mounted on the end in the X2 direction, and the positive discharge terminal 41a is mounted on the projecting portion 82, which is the end in the X1 direction.
- the end in the X2 direction is located near the power source BAT, and as shown in FIG. 7, a battery connection cable Cb2 extending from the power source BAT is connected to the battery connector Cn3.
- the end in the X1 direction is located near the first cartridge 20, and the heater 21 is connected to the positive electrode side discharge terminal 41a.
- the positive discharge terminal 41a is mounted on the projecting portion 82 on the Y2 direction side with the center line L interposed therebetween.
- a switch Sw4 is mounted on the projecting portion 82 on the Y1 direction side across the center line L.
- a DC/DC converter 63 and a reactor Rc2 of the DC/DC converter 63 are mounted on the main surface 7a between the operation switch OPS and the switch Sw4 in the X direction.
- a charging IC 55 As shown in FIG. 10, a charging IC 55, a reactor Rc1 of the charging IC 55, a protection IC 61, an MCU mounting board side connector Cn2, a suction The sensor 15, the negative electrode side discharge terminal 41b, and the like are mounted.
- an MCU-mounted board-side connector Cn2 is mounted approximately in the center of the secondary surface 7b, and a board-connecting cable Cb1 extending from a receptacle-mounted board 8 on which charging terminals 42 are mounted on the MCU-mounted board-side connector Cn2. is connected.
- the charging IC 55 is mounted on the X2 direction side of the MCU mounting board side connector Cn2, and between the charging IC 55 and the MCU mounting board side connector Cn2 in the X direction and on the Y1 direction side in the Y direction.
- a reactor Rc1 of the charging IC 55 is mounted on the Y2 direction side, and a protection IC 61 is mounted on the Y2 direction side.
- the suction sensor 15 is mounted on the X1 direction side of the MCU mounting board side connector Cn2, and the negative discharge terminal 41b is mounted on the projecting portion 82 which is the end portion in the X1 direction. As described above, the end in the X1 direction is located near the first cartridge 20, and the heater 21 is connected to the negative discharge terminal 41b.
- the negative discharge terminal 41b is arranged on the Y1 direction side of the projecting portion 82 with the center line L interposed therebetween.
- the positive side discharge terminal 41a is mounted on the main surface 7a
- the negative side discharge terminal 41b is mounted on the subsurface 7b.
- the positive electrode side discharge terminal 41 a and the negative electrode side discharge terminal 41 b are needle-like probes with thin tip portions exposed from the top portion 11 a of the case 11 . As shown in FIG.
- a virtual line P connecting the center Pa of the probe of the positive electrode side discharge terminal 41a and the center Pb of the probe of the negative electrode side discharge terminal 41b when viewed from the extending direction (X direction) of the center line L of the case 11 are arranged so as to pass through the center line L, and the center Pa of the probe of the positive electrode side discharge terminal 41a and the center Pb of the probe of the negative electrode side discharge terminal 41b are arranged on a circle Q passing through the center line L.
- the MCU mounting board 7 is provided with a first wiring layer 72a, a main surface side insulating layer 73a, and a second wiring layer 74a in this order from the base layer 70 toward the main surface side surface layer 71a. Further, from the base layer 70 toward the sub-surface side surface layer 71b, a third wiring layer 72b, a sub-surface side insulating layer 73b, and a fourth wiring layer 74b are provided in this order. Note that the MCU mounting board 7 is not limited to this, and various configurations can be adopted. For example, a plurality of second wiring layers 74a and/or fourth wiring layers 74b may be provided, or only one of the first wiring layer 72a and the third wiring layer may be provided.
- a conductive pattern formed of copper foil or the like is provided on the second wiring layer 74a and the fourth wiring layer 74b.
- the conductive pattern forming the power supply line and the signal line is referred to as a wiring pattern 77
- the conductive pattern forming the ground line is referred to as a ground pattern 78.
- FIGS. It is provided so as to surround the pattern 77 .
- the ground pattern 78 is positioned outside the wiring pattern 77 .
- 9 is a diagram showing the second wiring layer 74a of the MCU mounting substrate 7
- FIG. 11 is a diagram showing the fourth wiring layer 74b of the MCU mounting substrate 7.
- the wiring pattern 77 is hatched with oblique lines
- the ground pattern 78 is hatched with dots. It should be noted that FIGS. 9 and 11 show only some wiring patterns among the plurality of wiring patterns.
- the via V1 is composed of a conductor penetrating from the second wiring layer 74a to the fourth wiring layer 74b.
- the conductive patterns electrically connected to the via V1 are set to the same potential.
- the wiring pattern 77 of the second wiring layer 74a and the wiring pattern 77 of the fourth wiring layer 74b are electrically connected to each other through the via V1.
- the via V2 is composed of a conductor penetrating from the second wiring layer 74a to the first wiring layer 72a, and is electrically connected to the via V2 among the conductive patterns formed in the first wiring layer 72a and the second wiring layer 74a.
- the conductive patterns on the The via V3 is composed of a conductor penetrating from the third wiring layer 72b to the fourth wiring layer 74b, and is electrically connected to the via V3 among the conductive patterns formed in the third wiring layer 72b and the fourth wiring layer 74b.
- the conductive patterns on the For example, the ground pattern 78 of the second wiring layer 74a and a part of the conductive pattern of the first wiring layer 72a are electrically connected to each other through vias V2, and the ground pattern 78 of the fourth wiring layer 74b and the third wiring layer are electrically connected to each other.
- Part of the conductive patterns of 72b are electrically connected to each other through vias V3.
- the via V4 is composed of a conductor penetrating from the first wiring layer 72a to the third wiring layer 72b, and is electrically connected to the via V4 among the conductive patterns formed in the first wiring layer 72a and the third wiring layer 72b.
- the wiring to be connected is set to the same potential.
- a part of the conductive pattern of the first wiring layer 72a and a part of the conductive pattern of the third wiring layer 72b are electrically connected to each other through the via V4.
- a part of the conductive pattern of the first wiring layer 72a and a part of the conductive pattern of the third wiring layer 72b are connected to the ground pattern 78 of the second wiring layer 74a and the ground of the fourth wiring layer 74b.
- Pattern 78 can be a ground line with a common reference potential.
- the main-surface-side surface layer 71a and the sub-surface-side surface layer 71b are composed of an insulating resist film 79 (see FIG. 13), cover the second wiring layer 74a and the fourth wiring layer 74b, and short-circuit the wiring patterns 77 to each other. Also, the wiring pattern 77 and the ground pattern 78 are protected from being short-circuited. The details of the main-surface-side surface layer 71a and the sub-surface-side surface layer 71b will be described later.
- the base layer 70, the main-surface-side insulating layer 73a, and the sub-surface-side insulating layer 73b are made of an insulator containing glass or epoxy resin, for example, and adhere to each other while preventing short circuits between the upper and lower layers.
- a main-surface-side surface layer 71a which is the surface of the main surface 7a of the MCU-mounted substrate 7, and a sub-surface-side surface layer 71b, which is the surface of the sub-surface 7b of the MCU-mounted substrate 7, have An insulating film forming portion 75 having an insulating resist film 79 formed thereon and an insulating film non-forming portion 76 having no resist film 79 formed thereon are respectively provided.
- the insulating film forming portion 75 is surrounded by a thick line.
- the insulating film forming part 75 is formed in the wiring pattern of the second wiring layer 74a formed in the layer below the main surface layer 71a and the subsurface layer 71b. 77 and the wiring pattern 77 of the fourth wiring layer 74b, and most of the ground pattern 78 of the second wiring layer 74a and the ground pattern 78 of the fourth wiring layer 74b. As described above, the insulating film forming portion 75 prevents unintentional short circuit between the wiring patterns 77 and between the wiring pattern 77 and the ground pattern 78 .
- the insulating film non-formed portion 76 is provided near the edge of the MCU mounting board 7 .
- the second wiring layer extending along the edge of the MCU mounting substrate 7 and positioned outside the wiring pattern 77 of the second wiring layer 74a and the wiring pattern 77 of the fourth wiring layer 74b. At least part of the ground pattern 78 of 74 a and the ground pattern 78 of the fourth wiring layer 74 b are exposed from the resist film 79 .
- the boundary between the insulating film formed portion 75 and the insulating film non-formed portion 76 is the ground pattern 78 of the second wiring layer 74a and the ground pattern 78 of the fourth wiring layer 74b located near the edge of the MCU mounting board 7. Located slightly inside. The distance from this edge to the ground pattern 78 of the second wiring layer 74a and the ground pattern 78 of the fourth wiring layer 74b is It is shorter than the distance to 77.
- the wiring pattern 77 of the second wiring layer 74a and the wiring pattern 77 of the fourth wiring layer 74b are positioned outside the wiring pattern 77 of the second wiring layer 74a and the wiring pattern 77 of the fourth wiring layer 74b due to the insulating film non-formed portions 76 of the main surface side surface layer 71a and the sub-surface side surface layer 71b. Since the ground pattern 78 of the second wiring layer 74a and the ground pattern 78 of the fourth wiring layer 74b are exposed from the resist film 79, external noise (for example, electrostatic noise) can easily enter the ground pattern 78. .
- the noise that has entered the ground pattern 78 enters the first wiring layer 72a and the third wiring layer 72b from the ground pattern 78 via the via V2 and the via V3. Therefore, noise can be suppressed from entering the wiring pattern 77 and the electronic components connected to the wiring pattern 77 without using other electronic components such as a capacitor as a noise countermeasure, and adverse effects of noise can be suppressed.
- other electronic components such as capacitors can be simplified or omitted as a countermeasure against noise, so that the size and cost of the power supply unit 10 can be reduced.
- the edge on which the insulating film non-formed portion 76 is provided should include at least one of the plurality of edges of the MCU mounting board 7 .
- the insulating film non-formed portion 76 does not have to be provided on all edges of the MCU mounting substrate 7, and may be provided only on necessary edges.
- the electronic parts can be protected from noise by providing the insulating film non-formed portion 76, short-circuiting is likely to occur in the wiring pattern 77 or the like. important.
- the long edge 81d corresponds to the pair of long sides of the rectangular portion 81
- the short edge 81e corresponds to the pair of short sides of the rectangular portion 81
- the X1 Assuming that the side edge is referred to as an upper edge 82f and the edges on both sides of the projecting portion 82 in the Y direction are referred to as side edges 82g, the insulating film non-formed portion 76 of the present embodiment is the length of the rectangular portion 81 on the main surface 7a and the subsurface 7b. It is provided along the edge 81d.
- a portion of the ground pattern 78 extending along the long edge 81d and positioned outside the wiring pattern 77 extends from the resist film 79 in the vicinity of the long edge 81d. expose.
- "extending along the long edge 81d and positioned outside the wiring pattern 77 in the vicinity of the long edge 81d" means that the insulating film is not formed. It may also include that the portion 76 is located between (or is located at) the edge closest to the wiring pattern 77 .
- the insulating film non-formation portion 76 By providing the insulating film non-formation portion 76 along the long edge 81d of the rectangular portion 81, a long ground pattern 78 into which noise enters can be ensured, and the adverse effect of noise can be further suppressed. Conversely, the insulating film non-formed portion 76 is not provided along the short edge 81e of the rectangular portion 81 on the main surface 7a and the secondary surface 7b, and the insulating film formed portion 75 is provided on the short edge 81e. ing.
- the MCU mounting substrate 7 can be easily manufactured by forming the insulating film formed portion 75 instead of providing the insulating film non-formed portion 76 on the short edge 81e where a long ground pattern 78 into which noise penetrates cannot be secured.
- the insulating film non-formed portion 76 is provided continuously from the end in the X1 direction of the long edge 81d to the end in the X2 direction.
- the insulating film non-formation portion 76 may be intermittently provided along the long edge 81 d, but by providing it continuously, it is possible to effectively suppress the adverse effects of noise and also to reduce the manufacturing cost of the MCU mounting substrate 7 . can be easily
- the insulating film non-formation portion 76 is provided on the same edge of the main surface 7a and the subsurface 7b. 7a and the secondary surface 7b may be different, and the insulating film non-formation portion 76 may be provided only on one of the surfaces. Moreover, the insulating film non-formation portion 76 may be provided only on the short edge 81e of the main surface 7a and/or the subsurface 7b, or may be provided on the long edge 81d and the short edge 81e.
- the insulating film non-formed portion 76 exists at a position closer than the distance from the case 11 to the electronic components mounted on the MCU mounting substrate 7 .
- the shortest distance from the ground pattern 78 exposed from the resist film 79 of the insulating film non-formed portion 76 to the case 11 is shorter than the shortest distance from the electronic components mounted on the MCU mounting substrate 7 to the case 11 .
- the MCU 50 performs an important function in the power supply unit 10, as shown in FIG. It is preferably shorter than the shortest distance L2 to case 11 . As a result, noise from the outside of the case 11 penetrates into the ground pattern 78 of the insulating film non-formed portion 76 more easily than into the MCU 50, so that malfunction of the MCU 50 due to noise can be suppressed.
- the ground pattern 78 of the insulating film non-formation portion 76 exists at a position closer than the distance from the mating portion of the case 11 to the electronic component mounted on the MCU mounting substrate 7 .
- the insulating film non-formed portion 76 is not limited to the edge corresponding to the long side of the MCU mounting substrate 7, and may be provided on the edge closest to the MCU 50, or may be provided on both edges.
- the long edge 81d of the main surface 7a is the edge closest to the MCU 50. However, if the long edge 81d of the main surface 7a is not the edge closest to the MCU 50, the distance from the MCU 50 An insulating film non-formation portion 76 may be provided at the edge closest to the .
- the insulating film non-formed portion 76 By providing the insulating film non-formed portion 76 at the edge closest to the MCU 50, it is difficult for noise to enter the MCU 50 that performs an important function in the power supply unit 10, and malfunction of the MCU 50 due to noise can be suppressed. Furthermore, by providing the insulating film non-formed portion 76 at the edge closest to the MCU 50 and at the edge facing the closest edge with the MCU 50 interposed therebetween, it becomes more difficult for noise to enter the MCU 50. Malfunction of the MCU 50 due to noise can be further suppressed.
- the edge on which the insulating film non-formed portion 76 is provided attention may be paid to the wiring pattern 77 . That is, when there is an edge adjacent to the thick (large width) wiring pattern 77 and an edge adjacent to the thin (small width) wiring pattern 77, the edge where the insulating film non-formed portion 76 is provided is the thick (large width) edge. ) preferably includes an edge adjacent to the wiring pattern 77; Since the thick (large width) wiring pattern 77 is more susceptible to intrusion of noise than the thin (small width) wiring pattern 77 , the insulating film non-formed portion 76 is provided at the edge near the thick (large width) wiring pattern 77 .
- Intrusion of noise into the wiring pattern 77 can be effectively suppressed by providing the wiring pattern 77 .
- the distance from the ground pattern 78 exposed from the resist film 79 to the electronic component or the distance to the MCU 50 should be longer than the distance from the ground pattern 78 to the thick (wide) wiring pattern 77. is preferred.
- the thick (large width) wiring pattern 77 is provided with a plurality of vias (not shown) connected to the conductive patterns constituting the ground lines of the first wiring layer 72a and/or the third wiring layer 72b. preferably.
- the noise is transmitted through the plurality of vias to the first wiring layer 72a and the second wiring layer 72a. It is possible to invade the conductive pattern constituting the ground line of the three-wiring layer 72b, thereby suppressing the adverse effect of noise.
- the side edge 82g and the upper edge 82f which are the edges of the projecting portion 82, are not provided with the insulating film non-formed portion 76, and the insulating film is not formed on the side edge 82g and the upper edge 82f of the projecting portion 82.
- a forming portion 75 is provided.
- the switch Sw4 and the positive discharge terminal 41a are mounted on the projecting portion 82 of the main surface 7a as described above.
- the wiring pattern 77 formed on the projecting portion 82 shown in FIG. 9 is a VHEAT signal through which the fourth system voltage Vs4 output from the DC/DC converter 63 is supplied to the discharge terminal 41 (specifically, the positive discharge terminal 41a).
- a switch Sw4 which is a part of the line Ln6 (see FIG. 6) and switches between conduction and interruption of the VHEAT line Ln6, is a component that greatly affects discharge control to the heater . Since the side edge 82g, which is the edge closest to the switch Sw4, is not provided with the insulating film non-formed portion 76, it is possible to suppress a short circuit in the switch Sw4.
- the insulating film non-formed portion 76 is not provided on the upper edge 82f of the protruding portion 82, it is possible to easily manufacture the MCU mounting board 7 while suppressing the short circuit in the switch Sw4.
- the heater 21 is the heating unit that consumes the power supplied from the power source BAT to generate aerosol from the aerosol source, and power is supplied to the heater 21 from the discharge terminal 41 of the power supply unit 10.
- the heating unit that generates the aerosol can be composed of a susceptor built in the first cartridge 20 or the like and an induction heating coil that transmits power to the susceptor by electromagnetic induction.
- the discharge terminal 41 of the power supply unit 10 is connected to the induction heating coil to supply power to the induction heating coil.
- a power supply (power supply BAT);
- a load (heater 21) that consumes the power supplied from the power supply and generates aerosol from the aerosol source (aerosol source 22), or a heater connector (discharge terminal 41) to which a coil that transmits power to the load by electromagnetic induction is connected.
- a control device configured to control at least one of charging and discharging of the power supply
- a circuit board (MCU mounting board 7) on which the control device and the heater connector are mounted,
- the circuit board is wiring (wiring pattern 77) electrically connected to the control device and the heater connector; a conductive portion (ground pattern 78) electrically connected to the ground; an insulating film (resist film 79) that covers at least part of the wiring and the conductive portion,
- the surface of the circuit board main-surface-side surface layer 71a, sub-surface-side surface layer 71b) is an insulating film forming portion (insulating film forming portion 75) in which the insulating film is formed; and an insulating film non-formed portion (insulating film non-formed portion 76) where the insulating film is not formed,
- the insulating film non-forming portion is provided so that at least a portion of the conductive portion extending along the edge of the circuit board and positioned outside the wiring is exposed from the insulating film
- a power supply unit of the aerosol generator according to (1) The edge on which the insulating film non-formed portion is provided is at least one edge (long edge 81d) among a plurality of edges of the circuit board. Power supply unit for the aerosol generator.
- the circuit board has a rectangular portion (rectangular portion 81),
- the edge on which the insulating film non-formed portion is provided includes an edge (long edge 81d) corresponding to the long side of the rectangular portion, Power supply unit for the aerosol generator.
- the adverse effects of noise can be suppressed, and the circuit board can be manufactured easily.
- a power supply unit for the aerosol generator according to any one of (1) to (4), A housing (case 11) that houses at least the circuit board, Electronic components connected to the wiring are mounted on the circuit board, The shortest distance from the conductive portion exposed from the insulating film to the housing is shorter than the shortest distance from the electronic component to the housing. Power supply unit for the aerosol generator.
- noise from the outside of the housing penetrates into the conductive part more easily than into the electronic component, so that the adverse effect of noise on the electronic component can be suppressed.
- noise from the outside of the housing enters the conductive part more easily than entering the control device, so that malfunction of the control device due to noise can be suppressed.
- the edge on which the insulating film non-formed portion is provided includes an edge (long edge 81d) closest to the control device, Power supply unit for the aerosol generator.
- the power supply unit of the aerosol generator according to any one of (1) to (7),
- the circuit board has a rectangular portion, The edge on which the insulating film non-formed portion is provided, a first edge (long edge 81d) closest to the control device; A second edge (long edge 81d) facing the first edge across the control device, Power supply unit for the aerosol generator.
- the insulating film non-formed portion is provided at the edge near the wiring having a large width where noise easily penetrates, it is possible to effectively suppress the noise from entering the wiring.
- control device which performs an important function in the power supply unit of the aerosol generator, farther from the insulating film non-formed portion.
- the power supply unit of the aerosol generator according to (10), the second wiring comprises a plurality of vias, the via is connected to the ground; Power supply unit for the aerosol generator.
- the noise can enter the ground through the plurality of vias. Adverse effects can be suppressed.
- the power supply unit of the aerosol generator according to any one of (1) to (11), A switch (switch Sw4) mounted on the circuit board and connected to the wiring to turn on/off power supply to the heater connector;
- the edge on which the insulating film non-formation portion is provided does not include the edge (side edge 82g) closest to the switch. Power supply unit for the aerosol generator.
- the switch is a component that greatly affects the discharge control to the heater. According to (12), no insulating film non-formation portion is provided on the edge closest to the switch, so short-circuiting in the switch can be suppressed.
- a power supply unit for the aerosol generator according to (12) The circuit board is a rectangular portion (rectangular portion 81) on which the control device is mounted; a convex portion (protruding portion 82) that protrudes from the rectangular portion and on which the switch is mounted; The edge on which the insulating film non-formed portion is provided does not include the edge of the convex portion (side edge 82g, upper edge 82f), Power supply unit for the aerosol generator.
- the heater connector and the switch can be arranged close to each other.
- a power supply unit for an aerosol generator according to any one of (1) to (14),
- the circuit board has a rectangular portion (rectangular portion 81),
- the insulating film forming portion includes an edge (short edge 81e) corresponding to the short side of the rectangular portion, Power supply unit for the aerosol generator.
- Aerosol inhaler (aerosol generator) 7 MCU mounting board (circuit board) 10 power supply unit 11 case (enclosure) 21 heater (load) 22 aerosol source 41 discharge terminal (heater connector) 50 MCU (control unit) 71a Main surface side surface layer (surface of circuit board) 71b secondary side surface layer (surface of circuit board) 75 Insulating film formed portion 76 Insulating film non-formed portion 77 Wiring pattern (wiring) 78 ground pattern (conductive part) 79 resist film 81 rectangular portion 81d long edge (edge corresponding to the long side) 81e short edge (edge corresponding to the short side) 82 Projection 82g Side edge (edge of projection) 82f upper edge (edge of convex part) L1 Shortest distance (shortest distance from the conductive part exposed from the insulating film to the housing) L2 Shortest distance (shortest distance from the control device to the above) BAT Power Sw4 Switch
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
電源と、
前記電源から供給される電力を消費してエアロゾル源からエアロゾルを生成する負荷、又は、前記負荷へ電磁誘導により送電するコイルが接続されるヒータコネクタと、
前記電源の充電と放電の少なくとも一方を制御するよう構成される制御装置と、
前記制御装置及び前記ヒータコネクタが実装される回路基板と、を備え、
前記回路基板は、
前記制御装置及び前記ヒータコネクタと電気的に接続される配線と、
グランドと電気的に接続される導電部と、
前記配線及び前記導電部の少なくとも一部を覆う絶縁膜と、を備え、
前記回路基板の表面は、
前記絶縁膜が形成された絶縁膜形成部と、
前記絶縁膜が形成されていない絶縁膜非形成部と、を有し、
前記絶縁膜非形成部は、前記回路基板の縁に沿って延在し且つ前記配線よりも外側に位置する前記導電部の少なくとも一部が前記絶縁膜から露出するように設けられる。
エアロゾル吸引器1は、燃焼を伴わずに香味が付加されたエアロゾルを吸引するための器具であり、所定方向(以下、X方向と称する)に沿って延びる棒形状を有する。エアロゾル吸引器1は、図1及び図2に示すように、X方向に沿って電源ユニット10と、第1カートリッジ20と、第2カートリッジ30と、がこの順に設けられている。第1カートリッジ20は、電源ユニット10に対して着脱可能としてもよく、第2カートリッジ30は、第1カートリッジ20に対して着脱可能である。言い換えると、電源ユニット10に対し、第1カートリッジ20及び第2カートリッジ30は、それぞれ交換可能である。第2カートリッジ30は、第1カートリッジ20に対し、交換可能でもある。なお、第1カートリッジ20は、電源ユニット10に対して嵌合させて固定し、ユーザが容易に着脱できない構成としてもよい。
本実施形態の電源ユニット10は、図3~図5、図7に示すように、円筒状のケース11の内部に、バッテリパックBP、MCU(Micro Controller Unit)50、MCU搭載基板7、レセプタクル搭載基板8等を収容して構成される。
第1カートリッジ20は、図3に示すように、円筒状のカートリッジケース27の内部に、エアロゾル源22を貯留するリザーバ23と、エアロゾル源22を霧化及び/又は気化(以下、単に霧化という)するヒータ21と、リザーバ23からヒータ21へエアロゾル源を引き込むウィック24と、エアロゾル源22が霧化されることで発生したエアロゾルが第2カートリッジ30に向かって流れるエアロゾル流路25と、第2カートリッジ30の一部を収容するエンドキャップ26と、を備える。
第2カートリッジ30は、香味源31を貯留する。第2カートリッジ30は、第1カートリッジ20のエンドキャップ26に設けられたカートリッジ収容部26aに着脱可能に収容される。第2カートリッジ30は、第1カートリッジ20側とは反対側の端部が、ユーザの吸口32となっている。なお、吸口32は、第2カートリッジ30と一体不可分に構成される場合に限らず、第2カートリッジ30と着脱可能に構成されてもよい。このように吸口32を電源ユニット10と第1カートリッジ20とは別体に構成することで、吸口32を衛生的に保つことができる。
続いて、電源ユニット10の回路構成について図6を参照しながら説明する。
図6において、一点鎖線で囲んだ範囲内に図示した電子部品は、レセプタクル搭載基板8に実装された電子部品である。すなわち、レセプタクル搭載基板8は、主要な電子部品として、USB Type-Cのプラグ(以下、単にUSBプラグともいう)を挿入可能なレセプタクルである充電端子42と、レセプタクル搭載基板8とMCU搭載基板7とを接続する基板接続ケーブルCb1の一端が接続されるレセプタクル搭載基板側コネクタCn1と、を備える。本実施形態では、基板接続ケーブルCb1を、6本のプリント配線を有するFPC(Flexible Printed Circuit)ケーブルとするが、これに限定されるものではない。
充電端子42は、挿入されたUSBプラグのA1ピン、A4ピン、A5ピン、A6ピン、A7ピン、A8ピン、A9ピン、A12ピン、B1ピン、B4ピン、B5ピン、B6ピン、B7ピン、B8ピン、B9ピン、及びB12ピンの各ピンにそれぞれ接続されるピン(端子)を備える。本明細書等では、USBプラグのAnピン(ただしn=1~12)に対応する充電端子42のピンを、充電端子42のAnピンともいう。同様に、USBプラグのBnピンに対応する充電端子42のピンを、充電端子42のBnピンともいう。
充電IC55は、高電位側の電源端子の1つであるVBUSピンと、低電位側の電源端子であるGNDピンと、充電IC55と電源BATとの間の電力授受に用いられる入出力端子であるBAT_1ピン及びBAT_2ピンと、電源BATへの入力あるいは電源BATからの出力を検出する検出端子としてのBAT_SNSピンと、後述の第2システム電圧Vs2が出力される出力端子であるSYS_1、SYS_2ピン、SW_1ピン、及びSW_2ピンと、充電IC55の動作をオン/オフするためのCEピンと、を含んで構成される。なお、BAT_1ピン及びBAT_2ピンも、充電IC55における高電位側の電源端子として機能し得る。
充電IC55から出力された第2システム電圧Vs2が供給されるパワーパスラインLn4には、さらに、LED_L1を作動(例えば点灯)させるための第1LED回路Cc1と、LED_L2を作動させるための第2LED回路Cc2とが接続される。
LDOレギュレータ62は、高電位側の電源端子であるINピンと、低電位側の電源端子であるGNDピンと、後述の第3システム電圧Vs3が出力される出力端子であるOUTピンと、LDOレギュレータ62の動作をオン/オフするためのENピンと、を備える。
LDOレギュレータ62から出力された第3システム電圧Vs3が供給されるVSYSラインLn5には、さらに、操作スイッチOPSに対するユーザの操作を検出するための操作スイッチ回路Cc3と、電源BATの温度を検出するための電源温度検出回路Cc4とが接続される。
電源温度検出回路Cc4は、サーミスタTHと、抵抗器R4と、電源温度検出回路Cc4の導通及び遮断を切り替えるスイッチSw3とを直列に接続して構成される。電源温度検出回路Cc4におけるスイッチSw3側の一端はVSYSラインLn5に接続され、電源温度検出回路Cc4におけるサーミスタTH側の他端はグランドラインに接続される。また、MCU50のPC1ピンは、電源温度検出回路Cc4において抵抗器R4とサーミスタTHとの間となる接続点CPに接続される。
DC/DCコンバータ63は、高電位側の電源端子であるVINピンと、低電位側の電源端子であるGNDピンと、電圧が入力されるSWピンと、後述の第4システム電圧Vs4が出力される出力端子であるVOUTピンと、DC/DCコンバータ63の動作をオン/オフするためのENピンと、DC/DCコンバータ63の動作モードを設定するためのMODEピンと、を備える。
放電端子41に供給される電圧が不安定になると、ヒータ21によって生成されるエアロゾルの量がばらついて香喫味の悪化につながるおそれがある。そこで、図6に示すように、VHEATラインLn6には、DC/DCコンバータ63から出力された第4システム電圧Vs4を安定化するためのコンデンサが接続される。
吸引センサ15は、高電位側の電源端子であるVDDピンと、低電位側の電源端子であるGNDピンと、出力端子であるOUTピンと、を備える。
MCU50は、高電位側の電源端子であるVDDピンと、低電位側の電源端子であるVSSピンと、入力端子あるいは出力端子として機能する複数のピン(以下、入出力ピンともいう)と、を備える。MCU50は、VDDピンの電位とVSSピンの電位との差分により電源電圧が供給されることで動作する。
続いて、電源ユニット10の内部構成について図5、及び図7~図12を参照しながら説明する。
ケース11の内部空間には絶縁性のシャーシ12が設けられ、充電端子42(図3参照)、レセプタクル搭載基板8、電源BATを含むバッテリパックBP、及びMCU搭載基板7が、ボトム部11cからトップ部11aに向かってこの順にシャーシ12に保持される。ケース11には、充電端子42へのアクセスを許容する前述した充電用開口43、操作部14を外部に露出させる操作用開口、及び放電端子41をトップ部11aから外部に露出させる一対の放電用開口が設けられている。
MCU搭載基板7には、電源ユニット10の回路構成(図6等を参照)で説明した複数の電子部品が実装されている。MCU搭載基板7は、複数の層が積層されて構成された多層基板であって、略矩形形状を有する。MCU搭載基板7は、長手方向がケース11の中心線Lの延伸方向(X方向)に沿うように、且つ、一方側の素子実装面が操作部14に対向するように配置される。なお、以下の説明では、X方向を長手方向と称することがあり、X方向において、トップ部11a側をX1方向、ボトム部11c側をX2方向と称する。また、MCU搭載基板7上において、長手方向Xに直交する方向を短手方向Yと称し、短手方向Yにおいて、一方側(図7の左方であって、図8、9の上方且つ図10、11の下方)をY1方向、他方側(図7の右方であって、図8、9の下方且つ図10、11の上方)をY2方向と称する。MCU搭載基板7の中心線は、電源ユニット10(ケース11)のX方向に延びる中心線Lと一致する。なお、MCU搭載基板7の中心線は、MCU搭載基板7を長手方向Xに直交する面で切断した際のMCU搭載基板7の幅方向(短手方向)及び厚さ方向の中心点を長手方向Xに連続してつなげた線である。
図8及び図10に示すように、MCU搭載基板7の主面7aの表面である主面側表面層71a、及びMCU搭載基板7の副面7bの表面である副面側表面層71bにはそれぞれ、絶縁性のレジスト膜79が形成された絶縁膜形成部75と、レジスト膜79が形成されていない絶縁膜非形成部76と、が設けられている。図8及び図10において、太線で囲まれた部分が絶縁膜形成部75である。
前記電源から供給される電力を消費してエアロゾル源(エアロゾル源22)からエアロゾルを生成する負荷(ヒータ21)、又は、前記負荷へ電磁誘導により送電するコイルが接続されるヒータコネクタ(放電端子41)と、
前記電源の充電と放電の少なくとも一方を制御するよう構成される制御装置(MCU50)と、
前記制御装置及び前記ヒータコネクタが実装される回路基板(MCU搭載基板7)と、を備え、
前記回路基板は、
前記制御装置及び前記ヒータコネクタと電気的に接続される配線(配線パターン77)と、
グランドと電気的に接続される導電部(グランドパターン78)と、
前記配線及び前記導電部の少なくとも一部を覆う絶縁膜(レジスト膜79)と、を備え、
前記回路基板の表面(主面側表面層71a、副面側表面層71b)は、
前記絶縁膜が形成された絶縁膜形成部(絶縁膜形成部75)と、
前記絶縁膜が形成されていない絶縁膜非形成部(絶縁膜非形成部76)と、を有し、
前記絶縁膜非形成部は、前記回路基板の縁に沿って延在し且つ前記配線よりも外側に位置する前記導電部の少なくとも一部が前記絶縁膜から露出するように設けられる、
エアロゾル生成装置(エアロゾル吸引器1)の電源ユニット(電源ユニット10)。
前記絶縁膜非形成部が設けられる前記縁は、前記回路基板の複数の縁のうち少なくとも一つの縁(長縁81d)である、
エアロゾル生成装置の電源ユニット。
前記回路基板は、矩形部(矩形部81)を有し、
前記絶縁膜非形成部が設けられる前記縁は、前記矩形部の長辺に対応する縁(長縁81d)を含む、
エアロゾル生成装置の電源ユニット。
前記絶縁膜非形成部は、前記縁の一端から他端まで連続する、
エアロゾル生成装置の電源ユニット。
少なくとも前記回路基板を収容する筐体(ケース11)を備え、
前記回路基板には、前記配線に接続される電子部品が実装され、
前記絶縁膜から露出する前記導電部から前記筐体までの最短距離が、前記電子部品から前記筐体までの最短距離よりも短い、
エアロゾル生成装置の電源ユニット。
前記電子部品は、前記制御装置である、
エアロゾル生成装置の電源ユニット。
前記絶縁膜非形成部が設けられる前記縁は、前記制御装置との距離が最も近い縁(長縁81d)を含む、
エアロゾル生成装置の電源ユニット。
前記回路基板は、矩形部を有し、
前記絶縁膜非形成部が設けられる前記縁は、
前記制御装置との距離が最も近い第1縁(長縁81d)と、
前記制御装置を挟んで、前記第1縁と対向する第2縁(長縁81d)と、を含む、
エアロゾル生成装置の電源ユニット。
前記配線は
第1の配線(配線パターン77)と、
前記第1の配線の幅よりも大きい幅の第2の配線(配線パターン77)と、を含み、
前記絶縁膜非形成部は、前記第2の配線までの距離が前記第1の配線までの距離よりも短い位置の縁を含む、
エアロゾル生成装置の電源ユニット。
前記絶縁膜非形成部が設けられる前記縁から前記制御装置までの距離が、前記絶縁膜非形成部が設けられる前記縁から前記第2の配線までの距離よりも長い、
エアロゾル生成装置の電源ユニット。
前記第2の配線は、複数のビアを備え、
前記ビアは、前記グランドと接続している、
エアロゾル生成装置の電源ユニット。
前記回路基板に実装され、前記配線と接続し前記ヒータコネクタへの電力供給をオン/オフするスイッチ(スイッチSw4)を備え、
前記絶縁膜非形成部が設けられる前記縁は、前記スイッチとの距離が最も近い縁(側縁82g)を含まない、
エアロゾル生成装置の電源ユニット。
前記回路基板は、
前記制御装置が実装された矩形部(矩形部81)と、
前記矩形部から突出し、前記スイッチが実装された凸部(突出部82)と、を備え、
前記絶縁膜非形成部が設けられる前記縁は、前記凸部の縁(側縁82g、上縁82f)を含まない、
エアロゾル生成装置の電源ユニット。
前記ヒータコネクタは、前記凸部に実装されている、
エアロゾル生成装置の電源ユニット。
前記回路基板は、矩形部(矩形部81)を有し、
前記絶縁膜形成部は、前記矩形部の短辺に対応する縁(短縁81e)を含む、
エアロゾル生成装置の電源ユニット。
7 MCU搭載基板(回路基板)
10 電源ユニット
11 ケース(筐体)
21 ヒータ(負荷)
22 エアロゾル源
41 放電端子(ヒータコネクタ)
50 MCU(制御装置)
71a 主面側表面層(回路基板の表面)
71b 副面側表面層(回路基板の表面)
75 絶縁膜形成部
76 絶縁膜非形成部
77 配線パターン(配線)
78 グランドパターン(導電部)
79 レジスト膜
81 矩形部
81d 長縁(長辺に対応する縁)
81e 短縁(短辺に対応する縁)
82 突出部
82g 側縁(凸部の縁)
82f 上縁(凸部の縁)
L1 最短距離(絶縁膜から露出する導電部から筐体までの最短距離)
L2 最短距離(制御装置から前記までの最短距離)
BAT 電源
Sw4 スイッチ
Claims (15)
- 電源と、
前記電源から供給される電力を消費してエアロゾル源からエアロゾルを生成する負荷、又は、前記負荷へ電磁誘導により送電するコイルが接続されるヒータコネクタと、
前記電源の充電と放電の少なくとも一方を制御するよう構成される制御装置と、
前記制御装置及び前記ヒータコネクタが実装される回路基板と、を備え、
前記回路基板は、
前記制御装置及び前記ヒータコネクタと電気的に接続される配線と、
グランドと電気的に接続される導電部と、
前記配線及び前記導電部の少なくとも一部を覆う絶縁膜と、を備え、
前記回路基板の表面は、
前記絶縁膜が形成された絶縁膜形成部と、
前記絶縁膜が形成されていない絶縁膜非形成部と、を有し、
前記絶縁膜非形成部は、前記回路基板の縁に沿って延在し且つ前記配線よりも外側に位置する前記導電部の少なくとも一部が前記絶縁膜から露出するように設けられる、
エアロゾル生成装置の電源ユニット。 - 請求項1に記載のエアロゾル生成装置の電源ユニットであって、
前記絶縁膜非形成部が設けられる前記縁は、前記回路基板の複数の縁のうち少なくとも一つの縁である、
エアロゾル生成装置の電源ユニット。 - 請求項1又は2に記載のエアロゾル生成装置の電源ユニットであって、
前記回路基板は、矩形部を有し、
前記絶縁膜非形成部が設けられる前記縁は、前記矩形部の長辺に対応する縁を含む、
エアロゾル生成装置の電源ユニット。 - 請求項3に記載のエアロゾル生成装置の電源ユニットであって、
前記絶縁膜非形成部は、前記縁の一端から他端まで連続する、
エアロゾル生成装置の電源ユニット。 - 請求項1~4のいずれか一項に記載のエアロゾル生成装置の電源ユニットであって、
少なくとも前記回路基板を収容する筐体を備え、
前記回路基板には、前記配線に接続される電子部品が実装され、
前記絶縁膜から露出する前記導電部から前記筐体までの最短距離が、前記電子部品から前記筐体までの最短距離よりも短い、
エアロゾル生成装置の電源ユニット。 - 請求項5に記載のエアロゾル生成装置の電源ユニットであって、
前記電子部品は、前記制御装置である、
エアロゾル生成装置の電源ユニット。 - 請求項1~6のいずれか一項に記載のエアロゾル生成装置の電源ユニットであって、
前記絶縁膜非形成部が設けられる前記縁は、前記制御装置との距離が最も近い縁を含む、
エアロゾル生成装置の電源ユニット。 - 請求項1~7のいずれか一項に記載のエアロゾル生成装置の電源ユニットであって、
前記回路基板は、矩形部を有し、
前記絶縁膜非形成部が設けられる前記縁は、
前記制御装置との距離が最も近い第1縁と、
前記制御装置を挟んで、前記第1縁と対向する第2縁と、を含む、
エアロゾル生成装置の電源ユニット。 - 請求項1~8のいずれか一項に記載のエアロゾル生成装置の電源ユニットであって、
前記配線は
第1の配線と、
前記第1の配線の幅よりも大きい幅の第2の配線と、を含み、
前記絶縁膜非形成部は、前記第2の配線までの距離が前記第1の配線までの距離よりも短い位置の縁を含む、
エアロゾル生成装置の電源ユニット。 - 請求項9に記載のエアロゾル生成装置の電源ユニットであって、
前記絶縁膜非形成部が設けられる前記縁から前記制御装置までの距離が、前記絶縁膜非形成部が設けられる前記縁から前記第2の配線までの距離よりも長い、
エアロゾル生成装置の電源ユニット。 - 請求項10に記載のエアロゾル生成装置の電源ユニットであって、
前記第2の配線は、複数のビアを備え、
前記ビアは、前記グランドと接続している、
エアロゾル生成装置の電源ユニット。 - 請求項1~11のいずれか一項に記載のエアロゾル生成装置の電源ユニットであって、
前記回路基板に実装され、前記配線と接続し前記ヒータコネクタへの電力供給をオン/オフするスイッチを備え、
前記絶縁膜非形成部が設けられる前記縁は、前記スイッチとの距離が最も近い縁を含まない、
エアロゾル生成装置の電源ユニット。 - 請求項12に記載のエアロゾル生成装置の電源ユニットであって、
前記回路基板は、
前記制御装置が実装された矩形部と、
前記矩形部から突出し、前記スイッチが実装された凸部と、を備え、
前記絶縁膜非形成部が設けられる前記縁は、前記凸部の縁を含まない、
エアロゾル生成装置の電源ユニット。 - 請求項13に記載のエアロゾル生成装置の電源ユニットであって、
前記ヒータコネクタは、前記凸部に実装されている、
エアロゾル生成装置の電源ユニット。 - 請求項1~14のいずれか一項に記載のエアロゾル生成装置の電源ユニットであって、
前記回路基板は、矩形部を有し、
前記絶縁膜形成部は、前記矩形部の短辺に対応する縁を含む、
エアロゾル生成装置の電源ユニット。
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WO2006075381A1 (ja) * | 2005-01-14 | 2006-07-20 | Renesas Technology Corp. | カメラモジュールおよび半導体装置 |
JP2007087817A (ja) * | 2005-09-22 | 2007-04-05 | Fujifilm Corp | フレキシブルケーブル |
JP2007088056A (ja) * | 2005-09-20 | 2007-04-05 | Nitto Denko Corp | 配線回路基板 |
JP2021510500A (ja) * | 2017-12-29 | 2021-04-30 | ジェイティー インターナショナル エス.エイ.JT International S.A. | 蒸気生成装置用の電磁誘導加熱アセンブリ |
JP6875595B1 (ja) * | 2020-07-09 | 2021-05-26 | 日本たばこ産業株式会社 | エアロゾル吸引器の電源ユニット |
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Publication number | Priority date | Publication date | Assignee | Title |
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WO2006075381A1 (ja) * | 2005-01-14 | 2006-07-20 | Renesas Technology Corp. | カメラモジュールおよび半導体装置 |
JP2007088056A (ja) * | 2005-09-20 | 2007-04-05 | Nitto Denko Corp | 配線回路基板 |
JP2007087817A (ja) * | 2005-09-22 | 2007-04-05 | Fujifilm Corp | フレキシブルケーブル |
JP2021510500A (ja) * | 2017-12-29 | 2021-04-30 | ジェイティー インターナショナル エス.エイ.JT International S.A. | 蒸気生成装置用の電磁誘導加熱アセンブリ |
JP6875595B1 (ja) * | 2020-07-09 | 2021-05-26 | 日本たばこ産業株式会社 | エアロゾル吸引器の電源ユニット |
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