WO1999019775A1 - Watch provided with thermoelectric generation unit - Google Patents
Watch provided with thermoelectric generation unit Download PDFInfo
- Publication number
- WO1999019775A1 WO1999019775A1 PCT/JP1998/004588 JP9804588W WO9919775A1 WO 1999019775 A1 WO1999019775 A1 WO 1999019775A1 JP 9804588 W JP9804588 W JP 9804588W WO 9919775 A1 WO9919775 A1 WO 9919775A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- heat
- thermoelectric
- transfer plate
- voltage
- timepiece
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04G—ELECTRONIC TIME-PIECES
- G04G19/00—Electric power supply circuits specially adapted for use in electronic time-pieces
- G04G19/02—Conversion or regulation of current or voltage
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C10/00—Arrangements of electric power supplies in time-pieces
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of DC power input into DC power output
- H02M3/02—Conversion of DC power input into DC power output without intermediate conversion into AC
- H02M3/04—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters
- H02M3/06—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using resistors or capacitors, e.g. potential divider
- H02M3/07—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
Definitions
- the present invention relates to a timepiece provided with a thermoelectric generation unit containing a thermoelectric element that generates an electromotive force based on the Seebeck effect.
- the present invention provides an electromotive force generated by a thermoelectric generation unit containing one or more thermoelectric elements, which is stored in a power storage member, operated by the electromotive force, and operated using the power storage member as a power source. It relates to a clock configured as described above.
- the present invention provides an electromotive force generated by a thermoelectric generator unit accommodating one or more thermoelectric elements, which is stored in a power storage member, operated by the electromotive force, and operated using the power storage member as a power source.
- the invention relates to a configured portable electronic device.
- the portable electronic device of the present invention includes an analog electronic clock, a digital electronic clock, an analog digital composite electronic clock, a timer device, an alarm device, a timer and / or an analog electronic clock with an alarm, a timer and / or an alarm.
- an analog electronic clock includes an analog electronic clock, a digital electronic clock, an analog digital composite electronic clock, a timer device, an alarm device, a timer and / or an analog electronic clock with an alarm, a timer and / or an alarm.
- thermoelectric generator made up of a number of individual component parts is made of a metal casing. It is located between the bottom and the support ring.
- thermoelectric generator (Peltier battery)
- the heating electrode is placed facing the bottom of the casing
- the cold electrode is placed facing the metal cover.
- the thermoelectric generator is held against the intermediate ring via a shock absorber.
- the first insulator is used as a heat-absorbing side
- the second insulator is used as a heat-radiating side
- an output end is used. Then, the electromotive force is obtained, and the electromotive force is stored in the power storage member, and the power storage member operates the time display means.
- thermoelectric elements are divided into portions inside the wristwatch other than the portion occupied by the movement. Has been arranged.
- a p-type thermoelectric element and an n-type thermoelectric element are connected at an end to form a thermocouple. All thermocouples are connected in series to form a thermoelectric element.
- thermoelectric generation element is disposed between a back cover and a module cover.
- the thermoelectric generator includes a number of thermocouples.
- thermoelectric generation unit containing one or more thermoelectric elements.
- thermoelectric elements have low resistance to external forces.
- a thermoelectric element since many p-type and ⁇ -type thermoelectric elements in the form of elongated columns are arranged, the ⁇ -type and ⁇ -type thermoelectric elements are oriented at right angles to their longitudinal direction. When the force was applied, the thermoelectric element could be broken. Also, when a force along the longitudinal direction was applied to the ⁇ -type thermoelectric element and the ⁇ -type thermoelectric element, if the force exceeded a certain magnitude, the thermoelectric element could be broken.
- thermoelectric element Conventionally, the strength of the thermoelectric element could not be increased because the thermoelectric element was directly arranged in the space inside the wristwatch without mounting the thermoelectric element as a thermoelectric generation unit.
- a means for connecting the thermoelectric elements is required.
- thermoelectric element is arranged inside the wristwatch with one surface of the thermoelectric element directly in contact with the back cover of the wristwatch. Therefore, the dimensions of the parts that make up the watch Due to legal tolerances (variations in the dimensions of parts that occur during manufacturing), there was a possibility that a gap might be formed between the thermoelectric element and the back cover. The generation of such a gap may reduce the power generation efficiency of the thermoelectric generator unit.
- An object of the present invention is to provide a timepiece equipped with a thermoelectric generation unit, which has a structure in which the dimensional tolerance of the components constituting the timepiece is taken into consideration, and which has a high power generation efficiency of the thermoelectric generation unit.
- Another object of the present invention is to provide a timepiece having a small and robust thermoelectric generator unit. Disclosure of the invention
- a timepiece of the present invention includes a chargeable power storage member that constitutes a power supply for operating the timepiece.
- a timepiece drive circuit for driving a timepiece is configured to be able to operate with a power storage member.
- Display members such as hands display time-related information based on the time-related signal output from the clock drive circuit.
- the timepiece of the present invention has an upper body made of a thermally conductive material and a back cover made of a thermally conductive material.
- thermoelectric generator unit houses one or more thermoelectric elements that generate electromotive force based on the Seebeck effect, includes a first heat transfer plate that forms a heat absorbing plate, forms a heat sink, and transfers heat to the upper body. Including a second heat transfer plate configured to be able to transmit.
- a power supply operation control circuit is provided for storing the electromotive force generated by the thermal power generation unit in the power storage member.
- the heat conduction sensor is made of a material having thermal conductivity.
- the heat conduction spacer is arranged so as to contact the first heat transfer plate of the thermoelectric generator unit and the inner surface of the back cover.
- a heat insulating member having heat insulating properties is provided, and the heat insulating member is configured to insulate the back cover and the upper body.
- the heat conductive spacer is preferably made of a silicone rubber sheet. Good.
- the heat conductive spacer is arranged such that one surface thereof is in contact with the first heat transfer plate of the thermoelectric generator unit and the other surface is in contact with the inner surface of the back cover.
- the timepiece drive circuit is configured to be able to operate by the power storage member and to be able to directly operate by the electromotive force generated by the thermoelectric generator unit. .
- thermoelectric generation unit With this configuration, the electromotive force generated by the thermoelectric generation unit can be effectively used.
- the heat conductor is configured to be able to contact the second heat transfer plate of the thermoelectric generator unit to transfer heat from the second heat transfer plate.
- the heat conductor is preferably configured to be able to transfer heat to the upper body.
- the thickness of the air layer existing between the part forming the driving part of the timepiece and the back cover is such that the part forming the driving part of the timepiece and the first heat transfer unit Preferably, it is configured to be larger than between the plate and the central part of the back lid facing it.
- thermoelectric generation unit With such a configuration, it is possible to realize a timepiece with good power generation efficiency of the thermoelectric generation unit.
- the present invention provides a timepiece provided with a thermoelectric generation unit, wherein a first heat transfer plate forming a heat absorbing plate, a thermoelectric element generating electromotive force by a Seebeck effect, and a second heat transfer plate forming a heat sink. And a back lid made of a thermally conductive material, and a back lid made of a thermally conductive material and arranged so as to conduct heat to the back lid and the first heat transfer plate A heat conduction sensor, a heat conductor arranged to conduct heat with the second heat transfer plate, an upper body arranged to conduct heat with the heat conductor, and a clock. And a power storage member for storing the electromotive force generated by the thermoelectric generator unit, or by the electromotive force generated by the thermoelectric generator unit. And a display member for displaying information relating to time or time.
- thermoelectric generator unit a first heat transfer plate forming a heat absorbing plate, a thermoelectric element generating an electromotive force by the Seebeck effect, and a heat discharging plate.
- a thermal power generation unit including a second heat transfer plate, a back lid made of a thermally conductive material, and a heat conductive material, and conducting heat to the back lid and the first heat transfer plate.
- a heat conductive spacer arranged as possible, a heat conductor arranged to conduct heat with the second heat transfer plate, and a heat conductor arranged so as to conduct heat with the heat conductor.
- a power storage member for storing the electromotive force generated by the thermoelectric power generation unit and a power storage member for storing the electromotive force generated by the thermoelectric power generation unit, or operating by the electromotive force generated by the thermoelectric power generation unit, Display members for displaying time or time information It was comprised so that it might have.
- the thermoelectric generator unit in a portable electronic device provided with a thermoelectric generator unit, includes a first heat transfer plate constituting a heat absorbing plate, a thermoelectric element generating electromotive force by a Seebeck effect, and a radiating plate. It was configured to include the second heat transfer plate to be configured.
- the portable electronic device includes an outer case for housing components of the device including the thermoelectric generator unit.
- the outer case includes a heat absorbing member made of a heat conductive material, for example, a back cover, and a heat dissipating member made of a heat conductive material, for example, an upper body.
- a heat conductive spacer made of a heat conductive and elastically deformable material, for example, a silicone rubber sheet is used to form the heat absorbing member, the first heat transfer plate, and the heat conducting spacer.
- the heat conductive spacer is a sheet-like part, and is compressed by the heat absorbing member and the first heat transfer plate, so that heat can be reliably transferred from the heat absorbing member to the first heat transfer plate. .
- the second heat transfer plate is configured to be able to conduct heat to the heat dissipation member.
- a portable electronic device When such a portable electronic device is attached to the arm, the heat of the arm is transmitted to a heat absorbing member such as a back cover. The heat transmitted to the back lid is transmitted to the first heat transfer plate of the thermoelectric generation unit via the heat conduction sensor. Due to this heat, the thermoelectric element of the thermoelectric generator generates an electromotive force due to the Seebeck effect. Then, the heat radiated by the second heat transfer plate of the thermoelectric generator unit is transmitted to a heat radiation member such as the upper body, and is released to the outside air.
- thermoelectric generation unit BRIEF DESCRIPTION OF THE FIGURES
- FIG. 1 is a process diagram showing a process for manufacturing a thermoelectric generation unit used in an embodiment of a timepiece including a thermoelectric generation unit of the present invention.
- FIG. 2 is a plan view of a first heat transfer plate of the thermoelectric generation unit used in the embodiment of the timepiece including the thermoelectric generation unit of the present invention.
- FIG. 3 is a cross-sectional view of the first heat transfer plate taken along line 3A-3A in FIG.
- FIG. 4 is a plan view of a lead board of a thermoelectric generation unit used in an embodiment of a timepiece including the thermoelectric generation unit of the present invention.
- FIG. 5 is a plan view showing a thermoelectric generation unit used in an embodiment of a timepiece including the thermoelectric generation unit of the present invention, in which a lead substrate is adhered to a first heat transfer plate.
- FIG. 6 is a cross-sectional view taken along line 6A-6A in FIG. 5 and showing a state in which the lead substrate is bonded to the first heat transfer plate.
- FIG. 7 is a schematic side view of a thermoelectric element of a thermoelectric generation unit used in an embodiment of a timepiece including the thermoelectric generation unit of the present invention.
- FIG. 8 is a plan view of a thermoelectric element upper substrate of the thermoelectric generation unit used in the embodiment of the timepiece including the thermoelectric generation unit of the present invention.
- FIG. 9 is a plan view of the thermoelectric element lower substrate of the thermoelectric generation unit used in the embodiment of the timepiece including the thermoelectric generation unit of the present invention.
- FIG. 10 is a cross-sectional view of the thermoelectric element at line 1 OA-1 OA in FIG.
- FIG. 11 is a plan view showing a thermoelectric generation unit used in an embodiment of a timepiece including the thermoelectric generation unit of the present invention, in which a thermoelectric element is bonded to a first heat transfer plate.
- FIG. 12 is a cross-sectional view showing a state where the thermoelectric element is bonded to the first heat transfer plate, taken along line 12 A- 12 A in FIG.
- FIG. 13 shows a thermoelectric generation unit used in an embodiment of a timepiece equipped with the thermoelectric generation unit of the present invention, in which electrical connection is established between the terminal pattern of the thermoelectric element and the lead pattern of the lead board by wire bonding. It is a top view showing the state where it fell.
- FIG. 14 is a cross-sectional view showing a state where conduction is established by wire bonding between the terminal pattern of the thermoelectric element and the lead pattern of the lead board at line 14 A—14 A in FIG.
- FIG. 15 is a plan view of a unit frame of the thermoelectric unit used in the embodiment of the timepiece provided with the thermoelectric unit of the present invention.
- FIG. 16 is a sectional view of a unit frame of a thermoelectric generation unit used in an embodiment of a timepiece including the thermoelectric generation unit of the present invention.
- FIG. 17 is a plan view showing a state in which the unit frame is fixed to the first heat transfer plate in the thermoelectric generation unit used in the embodiment of the timepiece including the thermoelectric generation unit of the present invention.
- FIG. 18 is a plan view of a thermoelectric generation unit used in an embodiment of a timepiece including the thermoelectric generation unit of the present invention.
- FIG. 19 is a cross-sectional view of a thermoelectric generation unit used in an embodiment of a timepiece including the thermoelectric generation unit of the present invention.
- FIG. 20 is a sectional view of an embodiment of a timepiece body of a timepiece provided with the thermoelectric generation unit of the present invention.
- FIG. 21 is a rear plan view of an embodiment of a timepiece body of a timepiece provided with the thermoelectric generation unit according to the present invention, as seen from the case back side with the case back and the back cover removed.
- FIG. 22 is a rear plan view of the power generation block used in the embodiment of the timepiece provided with the thermoelectric generation unit of the present invention, as viewed from the back cover side.
- FIG. 23 shows an embodiment of a timepiece equipped with the thermoelectric generation unit of the present invention viewed from the back cover side. It is an enlarged partial back plan view (No. 1) of the power generation block.
- FIG. 24 is an enlarged partial rear plan view (part 2) of the power generation block used in the embodiment of the timepiece provided with the thermoelectric generation unit of the present invention, as viewed from the back lid side.
- FIG. 25 is an enlarged partial rear plan view (part 3) of the power generation block used in the embodiment of the timepiece provided with the thermoelectric generation unit of the present invention, as viewed from the back cover side.
- FIG. 26 is an enlarged partial rear plan view (part 4) of the power generation block used in the embodiment of the timepiece including the thermoelectric generation unit of the present invention, as viewed from the back cover side.
- FIG. 27 is a partial cross-sectional view (part 1) of a power generation block used in an embodiment of a timepiece including the thermoelectric generation unit of the present invention.
- FIG. 28 is a partial cross-sectional view (part 2) of the power generation block used in the embodiment of the timepiece provided with the thermoelectric generation unit of the present invention.
- FIG. 29 is a plan view of a heat conductor included in a power generation block used in the embodiment of the timepiece provided with the thermoelectric generation unit of the present invention.
- FIG. 30 is a plan view of a circuit insulating plate included in a power generation block used in the embodiment of the timepiece provided with the thermoelectric generation unit of the present invention.
- FIG. 31 is a plan view of a power generation block included in a power generation block used in an embodiment of a timepiece provided with the thermoelectric power generation unit of the present invention.
- FIG. 32 is a plan view of a booster circuit block included in a power generation block used in the embodiment of the timepiece including the thermoelectric generation unit of the present invention.
- FIG. 33 is an enlarged partial cross-sectional view showing an electrical connection between the circuit block of the movement and the booster circuit block in the embodiment of the timepiece provided with the thermoelectric generator of the present invention.
- FIG. 34 is a front view of a circuit lead terminal used for electrical connection between a movement circuit block and a booster circuit block in the embodiment of the timepiece including the thermoelectric generation unit of the present invention.
- FIG. 35 shows a pattern of a movement circuit block provided for electrical connection with a booster circuit block in an embodiment of a timepiece including a thermoelectric generation unit of the present invention.
- FIG. 5 is an enlarged partial plan view of a circuit lead terminal arranged so as to contact a pattern.
- FIG. 36 is an enlarged partial cross-sectional view of the electrical connection between the thermoelectric generation unit and the booster circuit block in the embodiment of the timepiece including the thermoelectric generation unit of the present invention.
- FIG. 37 is an enlarged partial cross-sectional view showing a portion where the heat conductor is fixed to the upper body in the embodiment of the timepiece including the thermoelectric generator unit of the present invention.
- FIG. 38 is an enlarged partial cross-sectional view showing a back cover, a heat conduction sensor, and a thermoelectric generation unit in the embodiment of the timepiece including the thermoelectric generation unit of the present invention.
- FIG. 39 is a plan view of a heat conductive spacer used in an embodiment of a timepiece including the thermoelectric generation unit of the present invention.
- FIG. 40 is an enlarged partial cross-sectional view showing a portion where the back cover is fixed to the lower body in the embodiment of the timepiece including the thermoelectric generator unit of the present invention.
- FIG. 41 is a plan view of a timepiece movement including a thermoelectric generation unit according to an embodiment of the present invention, as viewed from the back cover side.
- FIG. 42 is a schematic block diagram showing a driving portion and a train wheel in an embodiment of a timepiece including a thermoelectric generator unit of the present invention.
- FIG. 43 is a schematic block diagram showing a circuit configuration in an embodiment of a timepiece including a thermoelectric generator unit of the present invention.
- FIG. 44 is a schematic block diagram showing a configuration of a booster circuit in the embodiment of the timepiece including the thermoelectric generator unit of the present invention.
- FIG. 45 is a circuit diagram showing a configuration of an oscillation circuit used for a booster circuit in an embodiment of a timepiece including a thermoelectric generation unit of the present invention.
- FIG. 46 is a circuit diagram showing a configuration of the first booster circuit in the embodiment of the timepiece including the thermoelectric generator unit of the present invention.
- FIG. 47 is a circuit diagram showing a configuration of the second booster circuit in the embodiment of the timepiece including the thermoelectric generator unit of the present invention.
- FIG. 48 shows a third embodiment of a timepiece including a thermoelectric generation unit according to the present invention.
- FIG. 3 is a circuit diagram showing the configuration of FIG.
- FIG. 49 is a circuit diagram showing a configuration of a fourth booster circuit in the embodiment of the timepiece including the thermoelectric generator unit of the present invention.
- FIG. 50 is a schematic block diagram showing the principle of thermoelectric generation in the embodiment of the timepiece provided with the thermoelectric generation unit of the present invention.
- FIG. 51 is a cross-sectional view showing an embodiment of a portable electronic device provided with the thermoelectric power cut of the present invention.
- FIG. 52 is a schematic block diagram of an embodiment of a portable electronic device provided with the thermoelectric generation unit of the present invention.
- FIG. 53 is a cross-sectional view of another embodiment of a timepiece body of a timepiece including the thermoelectric generation unit of the present invention.
- FIG. 54 is a sectional view of still another embodiment of a timepiece body of a timepiece provided with the thermoelectric generation unit of the present invention.
- thermoelectric unit used in an embodiment of a timepiece equipped with the thermoelectric unit of the present invention and a method of manufacturing the same
- thermoelectric unit for use in a timepiece including the thermoelectric unit of the present invention A method for producing a thermoelectric unit for use in a timepiece including the thermoelectric unit of the present invention will be described.
- a first heat transfer plate 120 is prepared (step 101).
- the first heat transfer plate 120 is made of a metal having good heat conductivity, such as aluminum or copper.
- a metal having good heat conductivity such as aluminum or copper.
- its surface is preferably plated with nickel.
- the first heat transfer plate 120 is a thin plate-like member having a substantially rectangular planar shape.
- the first heat transfer plate 120 is composed of a lead board base part 120 a for mounting a lead board, and a lead board.
- thermoelectric element base section 120 d1 When 10 thermoelectric elements are used, 5 thermoelectric elements are mounted on the thermoelectric element base section 120 d1, and 5 thermoelectric elements are mounted on the thermoelectric element section 120 d2 . Therefore, the planar shape of the thermoelectric element base portions 120 d 1 and 120 d 2 is determined according to the planar shape of the thermoelectric element. The thickness of the thermoelectric element base portion 120 dl and 120 d 2 is smaller than the thickness of the lead substrate base portion 120 a.
- the lead substrate 130 has a shape including an elongated portion.
- the lead substrate 130 may be a glass epoxy substrate or a polyimide film substrate.
- Mounting guide holes 130 b 1, 130 b 2 force for positioning lead board 130 when mounting lead board 130 to first heat transfer plate 120.
- Mounting guide holes 130 b 3 and 130 b 4 are also provided in the lead board 130.
- the position of the guide hole 1 30 b 1 is determined according to the position of the mounting guide hole 120 b 1 of the first heat transfer plate 120.
- an adhesive is applied to the lead board base portion 120a of the first heat transfer plate 120 (step 102).
- This adhesive is preferably an epoxy-based adhesive.
- the adhesive may be another type of adhesive, such as a heat-sensitive adhesive, or may be a sheet adhesive.
- thermoelectric element 140 of the thermoelectric unit used in the timepiece provided with the thermoelectric unit of the present invention includes an upper thermoelectric element substrate 142 and a lower thermoelectric element substrate 14. 4, a plurality of P-type semiconductors 146, and a plurality of N-type semiconductors 148.
- the upper thermoelectric element substrate 142 has a plurality of conduction patterns 144 a for conducting the P-type semiconductor 144 and the N-type semiconductor 144.
- the lower thermoelectric element substrate 144 includes a plurality of conduction patterns 144 4a for conducting the P-type semiconductor 144 and the N-type semiconductor 144, and a terminal pattern 144 of the thermoelectric element 140. Referring to FIGS. 7 to 10 having bl, 1 4 4 b 2, a plurality of P-type semiconductors 1 46 and a plurality of N-type semiconductors 1 4
- the pattern of the upper thermoelectric element substrate 142 and the pattern of the lower thermoelectric element substrate 144 are connected so that the mold semiconductors 148 are alternately connected in series.
- thermoelectric element 140 configured as described above, for example, if the side with the upper thermoelectric element substrate 144 is the heat radiation side and the side with the lower thermoelectric element substrate 144 is the heat absorption side, the N-type semiconductor 1 In 48, the electrons move toward the upper thermoelectric element substrate 144 on the heat radiation side, and in the P-type semiconductor 144, the electrons move toward the lower thermoelectric element substrate 144 on the heat absorption side.
- Each P-type semiconductor 1 4 6 and each N-type semiconductor 1 4 8 are connected to the upper thermoelectric element substrate 1 4 2 conduction pattern 1 4 2 a and the lower thermoelectric element substrate 1 4 4 conduction pattern 1 4 4 a Are electrically connected in series via the P-type semiconductor 1 4 6 and the N-type semiconductor 1 4 8, heat transfer is converted into current, and the terminal pattern of the lower thermoelectric element substrate 1 4 4 An electromotive force is generated between 144 bl and 144 b2.
- thermoelectric element base portions 120 d1 and 120 d2 of the first heat transfer plate 120 are, for example, a thermally conductive adhesive such as a silver paste.
- This adhesive may be an epoxy-based adhesive having thermal conductivity, or may be another type of adhesive having thermal conductivity.
- thermoelectric elements 140a :! to 140a5 are connected to one thermoelectric element base part 120d of the first heat transfer plate 120.
- five thermoelectric elements 140a6-140al0 are fixed to the other thermoelectric element base portion 120d2 of the first heat transfer plate 120 (step 105).
- thermoelectric element 140 In this step 105, with the terminal patterns 144 b 1 and 144 b 2 of each lower thermoelectric element substrate 144 arranged near the lead substrate 130, the lower thermoelectric element 140 The lower surface of the substrate 144 is bonded to the thermoelectric element base portions 120 d 1 and 120 d 2 with silver paste 134. As a result, the lower thermoelectric element substrate 144 of the thermoelectric element 140 and the first heat transfer plate 120 can conduct heat.
- thermoelectric elements 140a1 to: 140a5 are arranged on one side (the right side in the figure) with respect to the lead substrate 130, and the five The thermoelectric elements 140 a 6 to 140 al 0 are arranged on the other side (left side in the figure) with respect to the lead substrate 130.
- thermoelectric elements 140 a1 to 140 a10 are used.
- the number of thermoelectric elements 140 may be one, or Alternatively, the number may be two or more. Further, the number of thermoelectric elements 140 is preferably an even number, but may be an odd number.
- the silver paste used in step 105 is dried (step 106).
- the drying temperature is 120. C to 150 ° C., and the drying time is preferably 2 to 5 hours.
- process inspection (1) is performed (process 107).
- the resistance of each thermoelement 140 is measured.
- the wire bonding 150 arranges the thermoelectric elements 140 so that the plurality of thermoelectric elements 140 are connected in series.
- thermoelectric elements 140a1 to 140a5 are wired in series by wire bonding 150
- thermoelectric elements 140a10 to 140a10 are wired in series from thermoelectric elements 140a6.
- the thermoelectric element 140a5 and the thermoelectric element 140a10 are wired in series by the wire bonding 150 via the lead pattern 130a9 of the lead board 130.
- Conduction is made by wire bonding 150 between the terminal pattern 144b1 of the thermoelectric element 140a6 and the lead pattern 130a5 of the lead board 130. Conduction is made by wire bonding 150 between the terminal pattern 1 40 b 2 of the thermoelectric element 140 a 6 and the output terminal pattern 130 t 2 of the lead board 130.
- thermoelectric elements 140 al ⁇ : 140 al 0 are connected in series, and the patterns 130 t 1 and 130 t 2 of the lead substrate 130 Configure the output terminals of the unit.
- thermoelectric generation unit in which 10 thermoelectric elements 140 al to 140 al 0 are connected in series is measured.
- a unit frame 160 of a thermoelectric unit used in a timepiece provided with the thermoelectric unit of the present invention is a member having a substantially rectangular outline, and 10 thermoelectric elements 1 It is configured in a shape that can surround the circumference of 40 al to 140 al 0.
- the unit frame 160 has a lower mounting part 160 d for mounting the first heat transfer plate 120, and an upper mounting part 16 6 for mounting the second heat transfer plate 120.
- the distance between the lower mounting part 160 d and the upper mounting part 160 e of the unit frame 160 having the e.g.
- the first heat transfer plate 120 and the second heat transfer plate 170 are mounted on the unit frame 160, the lower surface of the second heat transfer plate 170 and the upper surface of the And there is a gap between them.
- the unit frame 160 is preferably made of a plastic such as ABS resin, polycarbonate, or acrylic.
- the unit frame 160 is connected to the first heat transfer plate so that the unit frame 160 surrounds the periphery of the ten thermoelectric elements 140 al to 140 al 0. Fix to 120 (Step 110).
- the lead portion 160 f of the lead board of the unit frame 160 is arranged so as to escape from the upper surface of the lead board 130.
- the unit frame 160 may be fixed to the first heat transfer plate 120 by fitting, bonding, or a part of the unit frame 160 may be fixed to the first heat transfer plate 120. May be welded.
- thermoelectric element substrate 142 of the ten thermoelectric elements 140 a1 to 140 a10 is applied to the upper surface of the upper thermoelectric element substrate 142 of the ten thermoelectric elements 140 a1 to 140 a10 (step 1 11).
- the grease used in this step 1 1 1 is preferably a silicone grease having good thermal conductivity.
- a product name “Toshiba Silicone Compound” is used.
- the second heat transfer plate 170 is fixed to the upper mounting portion 160 e of the unit frame 160 (step 1 12). At this time, there is a gap between the lower surface of the second heat transfer plate 170 and the upper surface of the upper thermoelectric element substrate 142 of the thermoelectric element 140, and the silicone grease 17 2 is arranged in this gap. . Therefore, the second heat transfer plate 170 and the upper thermoelectric element substrate 142 are made heat conductive by the silicone grease 172.
- the second heat transfer plate 170 is made of a metal having good heat conductivity, such as aluminum or copper. Can be When the second heat transfer plate 170 is made of copper, its surface is preferably plated with nickel.
- the second heat transfer plate 170 is a thin plate-like member having a substantially rectangular planar shape. The outer shape of the second heat transfer plate 170 is formed in a size and a shape that can be attached to the upper attachment portion 160 e of the unit frame 160.
- the second heat transfer plate 170 may be fixed to the unit frame 160 by fitting or bonding, or a part of the unit frame 160 may be fixed to the second heat transfer plate 170. May be welded.
- thermoelectric generator unit 180 By attaching the second heat transfer plate 170 to the unit frame 160, it is possible to reliably protect the 10 thermoelectric elements 140 al to 140 al 0 housed in the thermoelectric generator unit 180. .
- Guide pins 170c and 170 ( 1) are provided on one surface of the second heat transfer plate 170 for use when attaching the thermoelectric generator unit 180 to another member.
- the second heat transfer plate 170 is attached to the cutout frame 160 with 170c and 170d facing outwards.
- the number of guide pins is preferably two, but may be one. Or three or more.
- thermoelectric generation unit 180 is measured.
- process inspection (4) is performed (process 1 1 4).
- the power generation performance of the thermal power generation unit is measured.
- the power generation performance is measured by heating one heat transfer plate of the thermoelectric generator unit 180 with a heater and measuring the voltage output by the thermoelectric generator unit 180 with a voltmeter. When performing this measurement, the difference between the temperature in the room where the thermoelectric generator unit 180 is placed and the heating temperature of the heater is kept constant.
- any process inspection may be omitted or additional process inspection may be performed.
- thermoelectric generation unit 180 used in the timepiece provided with the thermoelectric generation unit of the present invention and the sizes of the components used in the thermoelectric generation unit.
- the longitudinal length of the thermoelectric unit 5.2 mm
- thermoelectric unit Horizontal width of thermoelectric unit: 0.0 mm
- Thermoelectric unit thickness 2.7 mm
- Thermoelectric element length in the longitudinal direction 2.4 mm
- thermoelectric element Lateral width of thermoelectric element: 2.2 mm
- Thermoelectric element thickness 1.3 mm
- Thickness of second heat transfer plate .5 mm
- the first heat transfer plate 120 may be used as a heat absorbing plate and the second heat transfer plate 170 may be used as a heat radiating plate.
- the heat plate 120 may be used as a heat radiating plate, and the second heat transfer plate 170 may be used as a heat absorbing plate.
- the polarity of the voltage generated between the patterns 130 t 1 and 130 t 2 of the lead board 130 changes depending on the method of determining the heat absorbing plate and the heat radiating plate.
- thermoelectric generation unit used in the timepiece of the present invention a first heat transfer plate is prepared by the following steps, and an epoxy adhesive is applied to the lead board base portion 120a of the first heat transfer plate 120. Then, the lead substrate 130 is bonded to the first heat transfer plate 120, and the unit frame 160 is fixed to the first heat transfer plate 120.
- thermoelectric element base portion 120 dl of the first heat transfer plate 120: 120 dl0: 10 thermoelectric elements 140a1 to 140a10 are fixed to the thermoelectric element base portions 120dl and 120d2 of the first heat transfer plate 120, respectively.
- the silver paste used in the above-mentioned step 105 is dried, and the resistance of each thermoelectric element 140 is measured.
- terminal patterns 144 bl and 144 b 2 of the 10 thermoelectric elements 140 al to 140 al 0 and the lead pattern 130 a of the lead board 130:! Conduct between the 30a9 and the output terminal patterns 130t1 and 130t2 by wire bonding 150.
- thermoelectric elements 140 are wired so that the elements 40 are connected in series.
- thermoelectric generation unit in which 10 thermoelectric elements 140 al to 140 al 0 are connected in series is measured.
- thermoelectric element substrate 142 silicone grease is applied to the upper surface of the thermoelectric element substrate 142 on the ten thermoelectric elements 140 al to 140 al 0.
- the second heat transfer plate 170 is fixed to the upper mounting portion 160 e of the cut frame 160.
- the silicone grease 172 allows the second heat transfer plate 170 and the upper thermoelectric element substrate 142 to conduct heat.
- thermoelectric generation unit 180 is measured, and the power generation performance of the thermoelectric generation unit is measured.
- thermoelectric unit of the present invention (2) Structure of an embodiment of an external case of a timepiece provided with a thermoelectric unit of the present invention Next, a structure of a timepiece provided with a thermoelectric unit of the present invention will be described.
- the complete watch of the watch provided with the thermoelectric generator of the present invention that is, the watch body 200 includes an outer case 202, a movement 204, a power generation block 206, and a character. It is provided with a plate 208, a pointer 210, a center frame 212, and a bell 2114.
- the outer case 202 includes an upper case 220, a decorative edge 222, a lower body 224, a back cover 226, and glass 228.
- Upper body 220 is made of a thermally conductive material.
- upper body 220 is made of brass, stainless steel, or the like.
- the decorative border 22 2 is made of brass or stainless steel.
- the lower body 224 is made of a material having good heat insulating properties. That is, the lower trunk 224 is formed of a heat insulating member for insulating the upper trunk 220 and the back cover 226 from heat.
- lower body 224 is made of a plastic such as U-polymer or ABS resin.
- the back lid 2 26 is made of a thermally conductive material. It is preferable that the back cover 226 be made of metal such as stainless steel.
- the frames 2 1 and 2 are made of, for example, plastic. Glass 2 228 is mounted on upper torso 220.
- “Movement” means a mechanical body that includes a part that drives a watch.
- the movement 204 includes a power supply, a clock drive circuit that operates with the power supply and drives a clock, a converter such as a step motor that operates with a signal output from the clock drive circuit, and a converter. And a switching mechanism for correcting the position of the pointer 210.
- the pointer 210 is attached to the train wheel, and displays time or time information by rotating the train wheel.
- the pointer 210 includes, for example, an hour hand, a minute hand, and a second hand.
- the side with the back cover 226 is called the “back cover side” of the movement
- the side with the glass 228 is called the “glass side” of the movement.
- the dial 208 is located on the “glass side” of the movement 204.
- the inner frame 2 1 2 is attached from the “back lid side” of the movement 204.
- thermoelectric unit used in an embodiment of a timepiece equipped with the thermoelectric unit of the present invention
- the power generation block 206 including the thermoelectric generation unit used in the timepiece provided with the thermoelectric generation unit of the present invention includes a thermoelectric generation unit 180 and a booster circuit block 240. , A circuit insulating plate 242, a heat conductor 244, and a power generation block 246.
- the heat conductor 244 is a plate-like member having a substantially circular outer peripheral shape, and is made of a material having heat conduction. It is preferable that the heat conductor 244 be made of a metal such as copper or brass. The heat conductor 244 is preferably formed in a flat shape and is not subjected to bending. With this configuration, the heat conductor 244 can be manufactured by a simple processing step.
- the circuit insulating plate 242 is a thin plate-like member having a substantially circular outer peripheral shape, and is made of an electrically insulating material. The circuit insulating plate 242 is preferably made of a plastic such as polyimide or polyester.
- the power generation block frame 246 is a member having a substantially circular outer shape and is made of an electrically insulating material.
- the generator block frame 246 is made of plastic such as polycarbonate, polyacetal, etc.-Three screw pins 246a to 246c are fixed to the generator block frame 246.
- the booster circuit block 240 includes a booster circuit board 250 having a substantially circular outer peripheral shape.
- the booster circuit board 250 is formed of, for example, a glass epoxy board or a polyimide board.
- a booster integrated circuit 252 for constituting a booster circuit, a plurality of capacitors 260, a tantalum capacitor 2622, and a plurality of diodes 2664 are mounted on the booster circuit board 250. ing. The configuration of this booster circuit will be described later in detail.
- thermoelectric generator unit (180) when manufacturing the power generation block 206, the guide pins 170c and 170d are inserted into the heat conductor 244, and (2) With the outer surface of the heat transfer plate (170) in contact with the heat conductor (244), attach the thermoelectric generator unit (180) to the heat conductor (244).
- the output terminal patterns 1 3 0 t 1 and 1 3 0 t 2 of the thermoelectric generator unit 180 are brought into contact with the pattern of the booster circuit substrate 250 by the thermoelectric generator unit lead terminal set screw 290. Then, the lead substrate 130 is fixed to the power generating block frame 246.
- the step-up circuit board 250, the circuit insulating plate 24, the heat conductor 24, the force lead board 130, and the power generation block frame 24 6 are interposed. I have.
- the output terminal patterns 130 t 1 and 130 t 2 of the lead substrate 130 are conducted to the pattern of the booster circuit substrate 250.
- the heat conductor 244 is fixed to the power generation block frame 246 by two heat conductor set screws 292.
- thermoelectric generator unit of the present invention (4) Structure of an embodiment of a timepiece provided with a thermoelectric generator unit of the present invention.
- the movement 204 with the dial 208 and the pointer 210 is mounted on the upper body 220, and the frame 2 12 is mounted on the back lid of the movement 204. It is.
- the power generation block 206 is arranged on the back cover side of the movement 204 and is fixed to the upper body 220 by a power generation block set screw 310.
- the heat conduction spacer 320 is disposed on the back cover side of the thermoelectric generation unit 180.
- the case back 2 2 6 is fixed to the lower body 2 2 4.
- the heat conduction sensor 320 has one surface in contact with the first heat transfer plate 120 of the thermal power generation unit 180 and the other surface in the back cover 2 26. It is arranged so that it may contact the side.
- the movement 204 includes a circuit block 3 to which a timepiece driving integrated circuit for controlling the operation of the timepiece is mounted. Including 50. A portion of the back cover side surface of the circuit block 350 is disposed opposite to a portion of the glass side surface of the power generation block frame 246.
- the boost circuit lead terminal 2 16 is made of an elastic material such as spring steel and has the shape of a coil spring.
- the boost circuit lead terminal 2 16 has one end in contact with the pattern of the boost circuit board 250 and the other end in contact with the pattern of the circuit block 350. .
- the step-up circuit lead terminal 211 conducts the pattern of the step-up circuit board 250 and the pattern of the circuit block 350 in a compressed state.
- booster circuit lead terminals 2 16 are provided, each of which includes eight booster circuit boards 2.
- the pattern of 50 and the pattern of eight circuit blocks 350 are connected to each other.
- Two of these booster circuit lead terminals 2 16 are provided for transmitting a booster circuit clock signal, one is provided for transmitting a charge switching signal, and one is provided for transmitting a power generation detection signal.
- Two are provided to transmit the secondary battery voltage detection signal, one is provided for the positive electrode, and one is ).
- the booster circuit block 250 of the booster circuit block 240, the circuit insulating plate 242, and the heat conductor 2444 are connected to the lead board 130 and the power generation block frame 24.
- the lead substrate 130 is fixed to the power generation block frame 246 in a state of being interposed between the lead substrate 130 and the power generation block.
- the lead board 130 is provided with the lead board holding plate 291, placed on the lead board 130, and the thermoelectric generation unit lead terminal set screw 290 provided on the power generation block frame 2464. It is fixed to the power generation block frame 246 by screwing it to the screw pin 246a.
- the upper body 220 has a convex portion 220a projecting in the direction of the back cover.
- the convex portion 220a is formed in a ring shape substantially along the circumference. That is, the convex portion 220a is arranged outside the movement along the outer periphery of the movement of the timepiece.
- the heat conductor 244 has a glass-side surface in contact with the convex portion 220 a of the upper moon 220.
- the heat conductor 244 is a flat member, and the production of the heat conductor 244 does not require bending.
- the heat conductor 244 is fixed to the upper body 220 by screwing a heat conductor set screw 292 to a female screw provided in the upper body 220. Since the heat conductor 24 is in contact with the upper body 220, the heat transferred from the thermoelectric generator unit 180 passes through the heat conductor 24 and the convex portion 2 of the upper body 220.
- the heat conductor 244 used in the timepiece of the present invention, which is transmitted to 20a, has a smaller surface area than the conventional heat conductor that has been bent. As a result, by using such a heat conductor 244, heat can be extremely efficiently transferred from the second heat transfer plate 170 to the convex portion 220a of the same month 220. Can be.
- the heat conduction sensor 320 has one surface in contact with the first heat transfer plate 120 of the thermal power generation unit 180 and the other surface of the back cover 220. Contacting the inner surface.
- the heat conduction spacer 320 is formed in a shape in which a circle is partially cut away. The shape of the heat conduction spacer 320 is determined so as to correspond to the shape of the first heat transfer plate 120.
- the heat conductive spacer 320 is made of a material having good heat conductivity.
- the heat conductive spacer 320 is preferably made of a silicone rubber sheet.
- Such a silicone rubber sheet can be obtained, for example, as a “radiation silicone rubber sheet TC-TH type” of Shin-Etsu Chemical Co., Ltd., as a “gap pad” and “soft pad” of Kitagawa Kogyo Co., Ltd.
- a silicone rubber sheet is soft and compressible, and has good thermal conductivity.
- the surface 180 f of the back cover side of the thermoelectric generator unit 180 and the inner surface 2 26 ⁇ of the back cover 2 26 The gap ⁇ 3 is not a constant value due to variations in dimensions of related parts. That is, the thickness of the upper body 220, the thickness of the heat conductor 244, the thickness of the thermoelectric generation unit 180, the position of the inner surface 2 26 2 of the back lid 2 26, the lower body 2 2 Since the thickness force of 4 has a tolerance (variation in manufacturing dimensions), there is a difference between the surface 180 f on the back lid side of the thermoelectric generator unit 180 and the inner surface 2 2 6 f of the back lid 2 26.
- the gap T3 also varies.
- the back cover 2 2 6 is fixed to the lower body 2 2 4 so that the surface 180 f on the back cover side of the thermoelectric generator unit 180 and the inner side 2 2 6 f of the back cover 2 26 directly contact each other. You cannot do that.
- the heat conduction spacer 320 is compressible, the heat conduction spacer 320 is connected to the back cover side surface 180 f of the thermal power generation unit 180 and the back cover 2 26. If it is located between the inner side surface 2 26 f and the heat conduction spacer 320 compresses, the first heat transfer plate 120 of the thermoelectric generation unit 180 and the back cover 2 26 Can be made heat conductive.
- the thickness of the heat conduction sensor 320 is determined by taking into account the tolerance of the related parts, the surface 180 f on the back lid side of the thermoelectric generator unit 180, and the thickness of the back lid 2 26. It is configured to be larger than the maximum value of the gap between the inner surface 2 26 f.
- heat conduction spacer When the thickness of 320 is set to 0.5 mm, this thermal conductive spacer 320 is incorporated in the watch, and the back lid 222 is fixed to the lower body 222, when the thermal conductive spacer is fixed.
- Related parts tolerances can be determined such that the thickness of 320 is from 0.1 mm to 0.4 mm. With this configuration, heat can always be efficiently transmitted from the back lid 2 26 to the first heat transfer plate 120 of the thermoelectric generator unit 180 via the heat conduction spacer 320. be able to.
- the back cover 2 26 is fixed to the lower body 2 2 4 by screwing the back cover set screw 37 2 into the female screw provided on the lower body 2 24. It is preferable to provide a plurality of, for example, four back lid screws 37 2.
- Sash 3 7 4 Power S Situated between upper torso 220 and lower torso 2 24, Sash 376 is located between back cover 2 26 and Shimotsuki 2 224.
- a power supply 1 of a timepiece that is, a secondary battery 600 is provided in a movement 204.
- the secondary battery 600 forms a power storage member 420 for storing electromotive force generated by the thermoelectric generation unit 180.
- the secondary battery 600 is preferably formed of a rechargeable battery such as an ion lithium secondary battery.
- Such rechargeable batteries are, for example, Matsushita Battery Co., Ltd.'s “Titanium Lithium Ion Secondary Battery MT920” (diameter 9.5 mm x thickness 2.0 mm, nominal capacity 3.0 OmAh , Nominal voltage 1.5 volts).
- a chargeable capacitor can be used instead of the secondary battery 600.
- the movement 204 includes a circuit block 350.
- a clock driving integrated circuit 630 for controlling the operation of the clock is mounted on the circuit block 350.
- the clock driving integrated circuit 630 includes a clock driving circuit 418.
- a crystal oscillator 62 constituting a source vibration is mounted on a circuit block 350.
- the clock driving integrated circuit 630 includes a clock driving oscillation circuit, a clock driving frequency dividing circuit, and a motor driving circuit.
- Movement 204 Makino 6 32, Oshidari (not shown), No.), a changeover mechanism including a ratchet wheel (not shown), a conversion machine including a coil block 610, a stator 612, and a mouthpiece 614, a fifth wheel 616,
- the train is equipped with a fourth wheel 6 18, a third wheel 6 220, a second wheel 6 22, a minute wheel 6 24 and a wheel train including an hour wheel 6 26.
- the second hand 6400 is attached to the fourth wheel 618.
- the minute hand 6 4 2 is attached to the center wheel & pinion 6 2 2.
- the hour hand 6 4 6 is attached to the hour wheel 6 2 6.
- the second hand 6 40, the minute hand 6 42 and the hour hand 6 4 6 constitute the hands 2 10.
- crown 2 14 is attached to winding stem 6 32.
- the booster circuit 410 is provided to boost the voltage generated by the thermoelectric generator unit 180.
- the oscillation circuit 412 is provided for driving the booster circuit 410.
- the Schottky diode 4 14 is provided to rectify the voltage generated by the thermal power generation unit 180 and the voltage boosted by the boost circuit 410.
- the power supply operation control circuit 416 is configured to control the flow of power from the booster circuit 410 to the clock drive circuit 418 according to the value of the voltage boosted by the booster circuit 410, and the power storage member from the booster circuit 410. It is provided to control the flow of power to 420 and the flow of power from the power storage member 420 to the clock drive circuit 418.
- the power storage member 420 stores the power boosted by the boost circuit 410 and supplies the power to the timepiece drive circuit 418.
- the timepiece drive circuit 418 is configured to operate using the power boosted by the booster circuit 410 or the power stored in the power storage member 420.
- the output terminal of the thermoelectric generator unit 180 is connected to the electromotive voltage input terminal of the booster circuit 410.
- the P-type electrode of Schottky diode 4 14 is connected to the output terminal of thermoelectric generator 180.
- the N-type electrode of the Schottky diode 4 14 is connected to the oscillation circuit power supply terminal of the oscillation circuit 4 12.
- the boosted voltage output terminal of the booster circuit 410 is connected to the input terminal of the power supply operation control circuit 416.
- Power supply operation control circuit 4 1 6 Is connected to the input terminal of power storage member 420.
- the output terminal of the power supply operation control circuit 416 is connected to the power supply terminal of the clock drive circuit 418.
- thermoelectric generator unit 180 Let the voltage at the output terminal of the thermoelectric generator unit 180 be Vp.
- the voltage at the boosted voltage output terminal of the booster circuit 410 is Vpp.
- the voltage of the power supply terminal of the clock drive circuit 418 is Vic.
- the voltage of the input terminal of the power storage member 420 is Vca.
- the booster circuit 410 is constituted by a “switched capacitor type” booster circuit. Have been.
- the booster circuit 410 includes a first booster circuit 4330, a second booster circuit 432, a third booster circuit 4334, a fourth booster circuit 436, and an inverter circuit 438. And the smoothing capacitors 4440, 4422 and 4444.
- the electromotive voltage input terminal 450 of the booster circuit 410 is connected to the input terminal of the first booster circuit 330.
- the output terminal of the first booster circuit 430 is connected to the input terminal of the second booster circuit 432 and to one electrode of the smoothing capacitor 440.
- the other electrode of the smoothing capacitor 440 is connected to the GND terminal.
- the output terminal of the second booster circuit 432 is connected to the input terminal of the third booster circuit 434 and to one electrode of the smoothing capacitor 442.
- the other electrode of the smoothing capacitor 442 is connected to the GND terminal.
- the output terminal of the third booster circuit 434 is connected to the input terminal of the fourth booster circuit 436 and to one electrode of the smoothing capacitor 444.
- the other electrode of the smoothing capacitor 4 4 4 is connected to the GND terminal.
- the output terminal of the fourth booster circuit 436 forms the boosted voltage output terminal 452 of the booster circuit 410.
- a pulse signal input terminal 454 for inputting a pulse signal from the oscillator circuit 412 is connected to an input terminal of the inverter circuit 438 and a first pulse of the first booster circuit 430.
- Signal input terminal 4 9 4, 1st pulse signal input terminal 5 2 4 of second booster circuit 4 32, 1st pulse signal input terminal 5 3 4 of third booster circuit 4 3 4, 4th booster circuit 4 3 6 Is connected to the first pulse signal input terminal 5 5 4.
- the output terminal of the inverter circuit 438 is connected to the second pulse signal input terminal 498 of the first booster circuit 43, the second booster circuit 432 Connected to the second pulse signal input terminal 5 5 8 of the third booster circuit 4 3 4, the second pulse signal input terminal 5 5 8 of the fourth booster circuit 4 3 6 You. Next, the operation of the booster circuit 410 will be described.
- the first booster circuit 430, the second booster circuit 432, the third booster circuit 334, and the fourth booster circuit 436 receive a pulse signal from the oscillator circuit 412.
- the first booster circuit 430 boosts the voltage input from the electromotive voltage input terminal 450 to about twice.
- the second booster circuit 432 further boosts the voltage output by the first booster circuit 430 approximately twice.
- the third booster circuit 434 further boosts the voltage output by the second booster circuit 432 approximately twice.
- the fourth booster circuit 436 further boosts the voltage output by the third booster circuit 434 about twice. Therefore, the first booster circuit 430, the second booster circuit 432, the third booster circuit 334, and the fourth booster circuit 336 perform boosting of about 16 times in total.
- the output terminal of the inverter circuit 460 is connected to the input terminal of the inverter circuit 462, and is connected to the first electrode of the capacitor 464.
- the output terminal of the inverter circuit 466 is connected to the input terminal of the inverter circuit 466, and is connected to the first electrode of the capacitor 468.
- the output terminal of the inverter circuit 466 is connected to the input terminal of the inverter circuit 460 and the input terminal of the inverter circuit 470, and is connected to the first electrode of the capacitor 472.
- the output terminal of the inverter circuit 470 is connected to the input terminal of the inverter circuit 474.
- the output terminal of the inverter circuit 474 is connected to the pulse signal output terminal 476.
- the pulse signal P1 is configured to be output from the pulse signal output terminal 476.
- the second electrodes of the capacitors 464, 4688, and 472 are connected to the GND terminal 478, which is a low-potential electrode of the power storage member 420.
- each inverter circuit is connected to the power supply terminal 480 of the oscillation circuit 412.
- the ground terminal of each inverter circuit is connected to the GND terminal 478.
- the minimum drive voltage of the oscillator circuit is as follows. Is 0.7 V.
- the electromotive voltage input terminal 450 of the booster circuit 410 is connected to the drain of the N-channel MOS transistor 490 and the source of the N-channel MOS transistor 492 is connected. Connected to.
- the first pulse signal input terminal 494 is connected to the gate of the N-channel MOS transistor 492 and to the gate of the N-channel MOS transistor 496.
- the second pulse signal input terminal 498 is connected to the gate of the N-channel MOS transistor 490 and to the gate of the N-channel MOS transistor 502.
- the source of N-channel MOS transistor 490 is connected to the drain of N-channel MOS transistor 496 and to the second electrode of capacitor 504.
- the first electrode of the capacitor 504 is connected to the drain of the N-channel MOS transistor 492 and to the source of the N-channel MOS transistor 502.
- An output terminal 506 for outputting the boosted voltage is connected to the drain of an N-channel type MOS transistor 502.
- the 01 ⁇ 0 terminal 508 is connected to the source of the N-channel MOS transistor 4996. Therefore, the first booster circuit 430 is configured so that the boosted voltage is output from the output terminal 506.
- the second pulse signal input from the second pulse signal input terminal 498 is “LOW”.
- the N-channel MOS transistors 492 and 496 are turned on, and the N-channel MOS transistors 4990 and 502 are turned off.
- the voltage supplied to the electromotive force input terminal 450 is supplied via the N-channel MOS transistor 492.
- the voltage is supplied to the first electrode of the capacitor 504, and the first electrode of the capacitor 504 rises to the voltage Va.
- the voltage of GND is supplied to the second electrode of the capacitor 504 via the N-channel MOS transistor 496, and the second electrode of the capacitor 504 becomes “LOW”.
- the first pulse signal input from the first pulse signal input terminal 498 is “HI OW”
- the second pulse signal input from the second pulse signal input terminal 498 is “HIGH”.
- the N-channel MOS transistors 492 and 496 are turned off, and the N-channel MOS transistors 490 and 502 are turned on.
- the voltage supplied to the electromotive voltage input terminal 450 is supplied to the second electrode of the capacitor 504 via the N-channel MOS transistor 490, and the second electrode of the capacitor 504 is supplied with the voltage V b To rise.
- the first electrode of the capacitor 504 rises to a voltage obtained by adding the voltages Va and Vb.
- the increased voltage is supplied to the output terminal 506 via the N-channel MOS transistor 502, and the voltage of the output terminal 506 increases to Vc.
- the values of the voltages Va, Vb, and Vc are related to the maximum voltage that can flow between the source and the drain when the N-channel MOS transistor is turned on.
- An N-channel MOS transistor can apply any small voltage if the voltage applied between its source and drain is less than the maximum voltage value. However, if the voltage applied between the source and the drain is higher than the maximum voltage, the N-channel MOS transistor will not exceed the maximum voltage, no matter how large the voltage is applied. I can't make power.
- the voltage supplied from the electromotive voltage input terminal 450 is equal to or less than the maximum voltage value of the N-channel MOS transistor 492, the voltage supplied from the electromotive voltage input terminal 450 is Va has the same voltage. If the voltage supplied from the electromotive voltage input terminal 450 is higher than the maximum voltage of the N-channel MOS transistor 492: ⁇ , then Va is the maximum voltage of the N-channel MOS transistor 492. ⁇ S will be.
- the voltage supplied from the electromotive voltage input terminal 450 is equal to or less than the maximum voltage value of the N-channel MOS transistor 490, the voltage supplied from the electromotive voltage input terminal 450 is used. And Vb have the same voltage. If the voltage supplied from the electromotive voltage input terminal 450 is higher than the maximum voltage of the N-channel MOS transistor 490, Vb is the maximum voltage of the N-channel MOS transistor 490. become.
- V c becomes V a And Vb. If the voltage obtained by adding Va and Vb generated at the first electrode of the capacitor 504 is higher than the maximum voltage value of the N-channel MOS transistor 502, Vc is It becomes the maximum voltage value of the S transistor 502.
- the “maximum voltage value” of each N-channel MOS transistor described above is the “HIGH” voltage of each pulse signal input to the gate of each N-channel MOS transistor, that is, the N-channel MOS transistor. This is the voltage obtained by subtracting the threshold voltage from the voltage applied to the S transistor.
- the first booster circuit 430 can efficiently boost this voltage even when the input voltage to be boosted is low.
- This configuration is particularly effective when the voltage of the electromotive voltage input terminal 450 is lower than the threshold voltage of the N-channel MOS transistor.
- the first booster circuit 430 is configured so that the turned-on MOS transistor is turned off and the turned-off MOS transistor is turned on at the same time, but the turned-on MOS transistor is turned off. Thereafter, by configuring the MOS transistor, which is off, to turn on, the through current can be eliminated, and the boosting efficiency can be improved.
- the input terminal 510 of the voltage circuit 432 is connected to the drain of the N-channel MOS transistor 520 and to the source of the N-channel MOS transistor 522.
- the first pulse signal input terminal 524 is connected to the gate of the N-channel MOS transistor 522, and to the gate of the N-channel MOS transistor 526, and is connected to the P-channel type. Connected to the gate of MOS transistor 532.
- the second pulse signal input terminal 528 is connected to the gate of the N-channel MOS transistor 520.
- the source of N-channel MOS transistor 520 is connected to the drain of N-channel MOS transistor 526 and to the second electrode of capacitor 534.
- a first electrode of the capacitor 534 is connected to the drain of the N-channel MOS transistor 522 and to the drain of the P-channel MOS transistor 536.
- the output terminal 536 for outputting the boosted voltage is connected to a source that is grounded to the P-channel MOS transistor 532.
- the GND terminal 538 is connected to the source of the N-channel MOS transistor 526. Therefore, the second booster circuit 432 is configured so that the boosted voltage is output from the output terminal 536.
- the second pulse signal input from the second pulse signal input terminal 5 2 8 is “L OW”
- the N-channel MOS transistors 52 2 and 52 6 are turned on, and the N-channel MOS transistor 52 0 and the P-channel MOS transistor 53 32 are turned off.
- the voltage supplied to the input terminal 510 is supplied to the first electrode of the capacitor 534 via the N-channel MOS transistor 522, and the first electrode of the capacitor 534 is up to the voltage Va1.
- the voltage of GND is supplied to the second electrode of the capacitor 534 via the N-channel MOS transistor 526, and the second electrode of the capacitor 534 becomes "LOW".
- the voltage supplied to the input terminal 510 is supplied to the second electrode of the capacitor 534 via the N-channel MOS transistor 520, and the second electrode of the capacitor 534 is supplied with the voltage V b 1 To rise. Therefore, the first electrode of the capacitor 5334 rises to a voltage obtained by adding the voltages Va1 and Vb1.
- the increased voltage is supplied to the output terminal 5336 via the P-channel MOS transistor 532, and the voltage of the output terminal 5336 increases to Vc1.
- the P-channel type MOS transistor 532 has a minimum voltage at which the voltage of the first electrode of the capacitor 534 allows a current to flow between the source and the drain of the P-channel type MOS transistor 532.
- the voltage is lower than the voltage value, there are two operation modes.
- the voltage of the first electrode of the capacitor 534 is less than 0.6 V (that is, a voltage at which a current flows forward from the drain of the P-channel type MOS transistor 532 toward the substrate). At this time, the voltage cannot be supplied to the output terminals 536.
- the voltage of the first electrode of the capacitor 534 is 0.6 V or more and the voltage is lower than the minimum voltage at which current can flow between the source and the drain of the P-channel MOS transistor 532 At one time, a voltage of “(voltage of the first electrode of the capacitor 534) 1 (0.6 V)” is supplied to the output terminal 536.
- the voltage of the first electrode of the capacitor 534 is equal to or higher than the minimum voltage at which a current can flow between the source and the drain of the P-channel MOS transistor 532, Whatever the voltage of the first electrode 534 is, the voltage can be supplied to the output terminal 536.
- the “minimum voltage value at which a current can flow between the source and the drain of the P-channel MOS transistor 532” described above is the P-channel MOS transistor This is a value obtained by subtracting the threshold voltage of the P-channel MOS transistor 532 from the gate voltage of the transistor 532. Therefore, the “minimum voltage:” of the P-channel MOS transistor 532 shown in FIG. 47 is determined by the threshold voltage based on the voltage of “L OW” of the gate of the P-channel MOS transistor 5332. This is a value obtained by subtracting the threshold voltage from the GND potential. As a result, the “minimum voltage value” of the P-channel MOS transistor 532 becomes the “absolute value of the threshold voltage”.
- the second booster circuit 432 can improve efficiency when the voltage of the input terminal is equal to or higher than the minimum voltage value of the P-channel MOS transistor 532.
- the feature is that the pressure can be boosted.
- the second booster circuit 432 is configured so that the turned-off MOS transistor is turned on at the same time as the turned-off MOS transistor is turned off, but the turned-on MOS transistor is turned off. Thereafter, by configuring the MOS transistor, which is off, to turn on, the through current can be eliminated, and the boosting efficiency can be improved.
- the input terminal 540 of the third booster circuit 434 connected to the output terminal 536 of the second booster circuit 432 is connected to the base of the P-channel MOS transistor 550. It is connected to a plate-grounded source and to the drain of a P-channel MOS transistor 552.
- the first pulse signal input terminal 554 is connected to the gate of the P-channel MOS transistor 550, is connected to the gate of the P-channel MOS transistor 562, and is connected to the N-channel MOS transistor 562. Connected to the gate of S transistor 556.
- the second pulse signal input terminal 558 is connected to the gate of the P-channel MOS transistor 552.
- the drain of P-channel MOS transistor 550 is connected to the drain of N-channel MOS transistor 556 and to the second electrode of capacitor 564.
- First of capacitor 5 6 4 The electrode is connected to the substrate-grounded source of the P-channel MOS transistor 552 and to the drain of the P-channel MOS transistor 562.
- An output terminal 566 for outputting the boosted voltage is connected to the source of the P-channel MOS transistor 562 which is grounded on the substrate.
- the GND terminal 568 is connected to the source of the N-channel MOS transistor 556. Therefore, the third booster circuit 434 is configured so that the boosted voltage is output from the output terminal 566.
- the second pulse signal input from the second pulse signal input terminal 558 becomes “LOW”, and N
- the channel MOS transistor 556 and the P-channel MOS transistor 552 are turned on, and the P-channel MOS transistors 550 and 562 are turned off.
- the voltage supplied to the input terminal 540 is supplied to the first electrode of the capacitor 564 via the P-channel MOS transistor 552, and the first electrode of the capacitor 564 rises to the voltage Va2.
- the voltage of GND is supplied to the second electrode of the capacitor 564 via the N-channel MOS transistor 556, and the second electrode of the capacitor 564 becomes “: LOW”.
- the first pulse signal input from the first pulse signal input terminal 554 is “LOW”
- the second pulse signal input from the second pulse signal input terminal 558 becomes “HI GH”
- the N-channel MOS transistor 556 and the P-channel MOS transistor 552 turn off, and the P-channel MOS transistors 550 and 562 turn on.
- the voltage supplied to the input terminal 540 is supplied to the second electrode of the capacitor 564 via the P-channel MOS transistor 550, and the second electrode of the capacitor 564 rises to the voltage Vb2. Therefore, the first electrode of the capacitor 564 rises to a voltage obtained by adding the voltages Va 2 and Vb 2. This increased voltage is supplied to the output terminal 566 via the P-channel MOS transistor 562. As a result, the voltage of the output terminal 566 rises to Vc2.
- the voltage of the first electrode of the capacitor 564 is lower than the minimum voltage at which current can flow between the source and the drain of the P-channel MOS transistor. Can not do.
- the voltage of the first electrode of the capacitor 564 is higher than the minimum voltage at which current can flow between the source and the drain of the P-channel MOS transistor, Even when the voltage of the first electrode is a voltage like the following, the voltage can be supplied to the output terminal 566.
- the third booster circuit 4 3 4 is configured so that the turned-off MOS transistor is turned off and the turned-off MOS transistor is turned on at the same time as the turned-off MOS transistor, but the turned-on MOS transistor is turned off. Then, by configuring the MOS transistor, which is off, to turn on, the through current can be eliminated and the boosting efficiency can be improved.
- the input terminal 570 of the fourth booster circuit 436 is connected to the output terminal 566 of the third booster circuit 434.
- An output terminal 596 for outputting the boosted voltage is connected to the substrate grounded source of the P-channel MOS transistor 562. Therefore, the fourth booster circuit 436 is configured so that the boosted voltage is output from the output terminal 596.
- the configuration of the other parts of the fourth booster circuit 436 is the same as the configuration of the third booster circuit 434 described above. Therefore, detailed description of the configuration of the other parts of the fourth booster circuit 436 is omitted.
- the operation of the fourth booster circuit 434 is the same as the operation of the third booster circuit 434 described above.
- the P-channel MOS transistors 552 and 522 are turned on, and the P-channel MOS transistors 550 and 562 are turned off.
- the voltage supplied to the input terminal 570 is supplied to the first electrode of the capacitor 564 via the P-channel MOS transistor 552, and the first electrode of the capacitor 564 rises to the voltage Va3.
- the voltage of GND is supplied to the second electrode of the capacitor 564 through the N-channel MOS transistor 556, and the second electrode of the capacitor 564 becomes “LOW”.
- the N-channel MOS transistor 556 and the P-channel MOS transistor 552 are turned off, and the P-channel MOS transistors 550 and 562 are turned on.
- the voltage supplied to the input terminal 570 is supplied to the second electrode of the capacitor 564 via the P-channel MOS transistor 550, and the second electrode of the capacitor 564 rises to the voltage Vb3. Therefore, the first electrode of the capacitor 564 rises to a voltage obtained by adding the voltages Va3 and Vb3. This increased voltage is supplied to the output terminal 596 via the P-channel MOS transistor 562, and the voltage of the output terminal 596 increases to Vc3.
- the voltage of the first electrode of the capacitor 564 is lower than the minimum voltage at which a current can flow between the source and the drain of the P-channel MOS transistor, the voltage must be efficiently boosted. Can not.
- the voltage of the first electrode of the capacitor 564 is higher than the minimum voltage at which a current can flow between the source and the drain of the P-channel MOS transistor, the voltage of the first electrode of the capacitor 564 is Even if the voltage is a voltage like the above, the voltage can be supplied to the output terminal 596.
- the fourth booster circuit 436 is configured so that the turned-on MOS transistor is turned off and the turned-off MOS transistor is turned on at the same time, but the turned-on MOS transistor is turned off. MOS Transistors Off In this configuration, the through current can be eliminated and the boosting efficiency can be increased.
- the booster circuit 410 shown in FIG. 44 includes the first booster circuit 430, the second booster circuit 432, the third booster circuit 334, and the fourth booster circuit 430. It consists of 36.
- the voltage boosted by 30 is further boosted by the second booster circuit 432.
- the voltage boosted by 432 is further boosted by the third booster circuit 434.
- the voltage boosted by the third booster circuit 4334 is further boosted by the fourth booster circuit 436.
- the N-channel MOS transistor and the P-channel MOS transistor are arranged at appropriate locations according to their respective characteristics.
- the voltage of the electromotive force terminal 450 is boosted by the first booster circuit 430, Further, the boosted voltage can be further boosted by the second booster circuit 432, the third booster circuit 4334, and the fourth booster circuit 436.
- the output voltage Vp of the thermal power generation unit 180 is input to the oscillation circuit power supply terminal 480 of the oscillation circuit 412 through the Schottky diode 414.
- the oscillation circuit 412 starts operating, and oscillation starts.
- the oscillation circuit 412 that has started oscillating outputs a pulse signal to the pulse signal output terminal 476, and the output pulse signal is input to the pulse signal input terminal of the booster circuit 410.
- the booster circuit 410 starts boosting the output voltage of the thermoelectric generator 180.
- the boosted voltage output terminal 4 52 of the booster circuit 410 and the oscillator circuit power supply terminal 480 of the oscillator circuit 42 are connected, the boosted voltage is applied to the power supply of the oscillator circuit 4 12. become.
- the oscillation circuit 412 uses the voltage raised by the booster circuit 4 10 as a power supply. Therefore, once the output voltage Vp of the thermoelectric generation unit 180 exceeds the minimum drive voltage of the oscillation circuit 412, the output voltage Vp of the thermoelectric unit 180 changes over time. Even if the voltage becomes lower than the minimum drive voltage of the oscillation circuit 412, the booster circuit 410 can continue boosting.
- the voltage of power storage member 420 can be used as the oscillation start voltage of oscillation circuit 412.
- the voltage of the power storage member 420 is supplied to the oscillation circuit power supply terminal 480 through the power supply operation control circuit 416 to start the oscillation of the oscillation circuit 412.
- the oscillating circuit 412 uses the voltage boosted by the boosting circuit 410 as a power supply, as in the above-described operation.
- the power supply operation control circuit 416 inputs the boosted voltage Vpp, and distributes power to the clock drive circuit 418 and the power storage member 4220 according to the value of the boosted voltage Vpp. If the boosted voltage V pp is equal to the voltage required to drive the clock drive circuit 4 18, the power supply operation control circuit 4 16 clocks the voltage boosted by the boost circuit 4 10 Supply to drive circuit 4 18.
- the power supply operation control circuit 4 16 boosts the voltage by the boost circuit 4 10. The voltage thus supplied is supplied to both the clock drive circuit 418 and the electricity storage member 420. If the boosted voltage V pp is smaller than the voltage required to drive the clock drive circuit 418, the power supply operation control circuit 416 clocks the voltage from the power storage member 420. Supply to drive circuit 4 18.
- the boosted voltage V pp is smaller than the voltage that can drive the clock drive circuit 418. Even when the voltage becomes high, the clock drive circuit 418 can be continuously driven by the voltage from the power storage member 420. Therefore, with this configuration, the output voltage of the thermal power generation unit 180 can be used efficiently.
- the output voltage of the thermoelectric generation unit 180 is determined by the booster circuit 410 or the power supply operation control circuit 416. Is input to The voltage boosted by the booster circuit 410 is supplied to the clock drive circuit 418. .
- the clock driving circuit 418 includes a clock driving oscillation circuit, a clock driving frequency dividing circuit, and a motor driving circuit.
- the crystal oscillator 62 constitutes a source oscillation, for example, oscillates at 32,768 Hz, and outputs a reference signal to a clock driving oscillation circuit.
- the clock driving frequency dividing circuit performs a predetermined frequency dividing operation by inputting the output signal of the oscillation circuit, and outputs, for example, a signal of 1 Hz.
- the motor drive circuit receives the output signal of the clock drive frequency dividing circuit and outputs a drive signal for driving the step motor.
- the clock drive circuit 418 operates with the voltage boosted by the booster circuit 410 or the voltage of the secondary battery 600.
- Power supply operation control circuit 4 16 Supply of voltage boosted by booster circuit 4 10 to watch drive circuit 4 18 and supply of rechargeable battery 600 voltage to watch drive circuit 4 18 Control.
- the coil block 610 receives the drive signal for driving the step motor output from the motor drive circuit, and magnetizes the plurality of poles of the stator 612.
- the rotor 6 14 is rotated by the magnetic force of the stator 6 12.
- the rotor 614 rotates 180 degrees every second based on the aforementioned 1 Hertz signal.
- the fifth wheel 6 16 rotates with the rotation of the rotor 6 14.
- the fourth wheel 6 18 rotates 6 degrees per second due to the rotation of the fifth wheel 6 16.
- the third wheel & pinion 620 is rotated by the rotation of the fourth wheel & pinion 6 18.
- the second wheel & pinion 62 2 rotates by the rotation of the third wheel & pinion 62 0.
- the minute wheel 6 2 4 is rotated by the rotation of the second wheel 6 2 2.
- Hour wheel 6 2 6 It rotates by the rotation of the reverse wheel 6 2 4.
- the second is indicated by the second hand 6 40 attached to the fourth wheel 6 18.
- the minute hand is indicated by the minute hand 6 42 attached to the second wheel 6 2 2.
- "Hour” is indicated by the hour hand 6 4 6 attached to the hour wheel 6 2 6.
- thermoelectric generation unit of the present invention when a timepiece equipped with the thermoelectric generation unit of the present invention is put on an arm, the heat of the arm 65 is transferred to the case back 226.
- the heat of the back cover 226 is transmitted to the first heat transfer plate 120 of the thermoelectric generator unit 180 via the heat conductive spacer 320. That is, the first heat transfer plate 120 constitutes a heat absorption plate.
- the thermoelectric element 140 of the thermoelectric generation unit 180 generates an electromotive force by the Seebeck effect. Therefore, the second heat transfer plate 170 of the thermoelectric generation unit 180 forms a heat sink.
- the heat released from the second heat transfer plate 170 is transmitted to the upper body 220 via the heat conductor 244 and released to the outside air 652.
- the heat conductor 244 is in contact with the convex portion 220 a of the upper body 220.
- the flat heat conductor 244 heat is extremely transferred to the convex portion 220 a of the second heat transfer plate 170 and the upper body 220. It can be transmitted efficiently. That is, such a configuration in which the flat thermal conductor 244 is brought into contact with the convex portion 220 a of the upper body 220 can reduce the thermal resistance in the heat radiation path. Therefore, with this configuration, the power generation efficiency of the thermoelectric power generation unit can be improved.
- thermoelectric element 140 is configured so that, for example, 10 pairs of modules including 50 pairs of PN junctions are connected in series.
- the transistors included in the step-up circuit 4 and the step-up circuit 4 10 are configured to have a threshold voltage of 0.3.
- the power generation amount of one thermoelectric material element constituting the thermoelectric element 140 is, for example, about 200 ⁇ VZ ° C. . Therefore, assuming that the operating voltage of the watch is 1.5 V, the thermal power In order to drive the timepiece, the temperature difference between the first heat transfer plate 120 and the second heat transfer plate 170 is 2. When C, a thermoelectric element 140 having 1812 5 pairs of PN junctions is required.
- the embodiment of the timepiece including the thermoelectric generation unit of the present invention is configured to include the above-described booster circuit 410, the oscillation circuit 412, and the power supply operation control circuit 416. Therefore, if the generated voltage immediately after attaching the watch to the wrist exceeds the minimum drive voltage of the oscillator circuit 412, the generated voltage in the steady state thereafter becomes lower than the minimum drive voltage of the oscillator circuit 412. However, boosting by the boosting circuit 410 is possible.
- the generated voltage immediately after the timepiece was attached to the wrist was 2 V, and the generated voltage in a steady state thereafter was about 0.5. V.
- the threshold voltage of the transistor included in the oscillation circuit 412 is about 0.3 V
- the minimum drive voltage of the oscillation circuit 412 is Was about 0.7 V.
- the power supply and the operation control circuit 416 input the boosted voltage V pp, and the boosted voltage V pp The power is distributed to the clock drive circuit 418 and the power storage member 420 according to the value. ⁇
- the power supply operation control circuit 4 16 The voltage boosted by the circuit 410 is supplied to the clock drive circuit 418.
- the voltage operation control circuit 4 16 The voltage boosted by 410 is supplied to both the clock drive circuit 418 and the electricity storage member 420.
- the power supply operation control circuit 4 16 supplies the voltage from the secondary battery 600 to the clock drive circuit 4 18.
- the power supply operation control circuit 4 16 By configuring the power supply operation control circuit 4 16 so as to operate in this way, when the boosted voltage V pp becomes smaller than the voltage that can drive the clock drive circuit 4 18 Also, the clock drive circuit 418 can be continuously driven by the voltage from the secondary battery 600. Therefore, with this configuration, the clock can continue to be driven even if the boosted voltage becomes smaller than the voltage 1.2 V required to drive the clock drive circuit 418.
- an embodiment of a portable electronic device equipped with the thermoelectric generation unit of the present invention includes a portable electronic device 700, a liquid crystal panel 7 10, and a speaker 7 1 2. And lamps 7 18.
- the drive control circuit 720 operates with the voltage supplied from the power supply operation circuit 416.
- the thermoelectric generator Yunitto 1 8 0, the booster circuit 4 1 0, the oscillation circuit 4 1 2, power operation circuit 4 1 6, the secondary battery 6 0 0, the structure and operation of the crystal oscillator, before predicate This is the same as the embodiment of the timepiece provided with the thermoelectric generation unit according to the present invention. Therefore, a detailed description thereof will be omitted.
- the drive control circuit 720 is configured to measure time-related information, alarm time-related information, and elapsed time-related information based on the vibration of the crystal oscillator 62.
- the display control circuit 730 outputs a signal for operating the liquid crystal panel 7 10 to the liquid crystal panel 7 10 based on the signal output from the drive control circuit 7 20. Therefore, the liquid crystal panel 7 10 displays the time or the information on the time based on the signal output from the display control circuit 7 30.
- the speaker control circuit 732 outputs a signal for operating the speaker 7 12 to the speaker 7 12 based on the signal output from the drive control circuit 7 20.
- the speaker 7 12 emits an alarm sound based on the signal output from the speaker control circuit 7 32. An alarm sounds when the time is due.
- the sound emitted from the speaker 71 2 goes out of the portable electronic device 700 from the sound opening 712 a.
- buttons for operating the portable electronic device 700 are provided, that is, a first button 7400, a second button 7424, a third button 7444, and a fourth button 7446.
- Figure 51 shows only the first button.
- the first switch terminal 750 is provided so as to perform the operation of the switch by pressing the first button 7400.
- the second switch terminal 752 is set so that the switch operates by pressing the second button 742.
- the third switch terminal 754 is provided so as to perform the operation of the switch when the third button 744 is pressed.
- the fourth switch terminal 756 is provided so as to operate the switch by pressing the fourth button 746.
- the operation of the switch is performed by each switch terminal supplying an input signal to the corresponding switch input terminal of the drive control circuit 720.
- the lamp control circuit 738 outputs a signal for turning on the lamp 7 18 to the lamp 7 18 based on the signal output from the drive control circuit 7 20.
- the lamp control circuit 738 is configured to be activated by pressing the fourth button 746 to turn on the lamp 718.
- the portable electronic device 700 may have only the liquid crystal panel 7100, or the liquid crystal panel 7100 and the speed 7 12 may be provided, a liquid crystal panel 7 10 and a lamp 7 18 may be provided, or a liquid crystal panel 7 10, a speaker 7 12 and a lamp 7 18 may be provided. You may.
- the portable electronic device 700 may further include a clock driving circuit as shown in FIG. 42 and a pointer operated by the clock driving circuit.
- a composite display-type portable electronic device having both an analog display and a digital display can be realized.
- the portable electronic device 700 displays time information on the liquid crystal panel 7100.
- a digital wristwatch can be realized.
- the speaker 7 12 can be configured to emit an alarm sound at a preset time, thereby realizing an alarm or a clock with an alarm.
- the speaker 7 12 when the preset time elapses, the speaker 7 12 emits an alarm sound, so that a timer or a clock with a timer can be realized.
- the back cover 2 26 includes an outer peripheral flat portion 2 26 a and a central concave portion 2 26 b. .
- the outer peripheral flat portion 2 2 6 a is fixed to the lower body 2 2 4.
- the central concave portion 222 b is formed so as to be arranged closer to the movement 204 than the outer peripheral flat portion 222 a. It is preferable that the central concave portion 2 26 b is formed by drawing.
- the heat conduction spacer 320 has one surface in contact with the first heat transfer plate 120 of the thermal power generation unit 180, and the other surface has a central recessed portion 222b of the back cover 220. It is arranged to contact the inside surface.
- thermoelectric unit of the present invention When the watch equipped with the thermoelectric unit of the present invention is attached to the wrist, the outer surface of the central portion 226b of the back cover 226 contacts the arm and heat is transferred from the arm to the thermoelectric unit 180. Can be.
- the thickness of the air layer existing between the back lid 2 26 and the movement 204 is reduced by the central concave portion 2 26 b of the back lid 2 26 and the movement 204. Can be greater than the distance between. Therefore, the heat insulation efficiency between the back cover 2 26 and the movement 204 can be increased, and the power generation efficiency of the thermal power generation unit 180 can be increased.
- the back cover 2 26 has an outer peripheral flat portion 2 26 c and a central convex portion 2 26 d. including.
- the outer peripheral flat portion 2 2 6 c is fixed to the lower body 2 2 4.
- the central convex portion 226d is formed so as to be located farther from the movement 204 than the outer peripheral flat portion 226c.
- the central convex portion 2 26 d is preferably formed by drawing.
- Thermal conductor 244 includes an outer peripheral support portion 244a and a central contact portion 244b.
- the outer peripheral support part 2 44 a is fixed to the upper trunk 220.
- the center contact portion 244b is formed so as to be located farther from the movement 204 than the outer peripheral support portion 244a.
- the central contact portion 2444b is preferably formed by drawing.
- the central contact portion 244 b of the heat conductor 244 contacts the second heat transfer plate 170 of the thermoelectric generator unit 180.
- the heat conduction spacer 320 has one surface in contact with the first heat transfer plate 120 of the thermoelectric generator unit 180, and the other surface has a central convex portion 2 It is arranged to contact the inside surface.
- thermoelectric unit of the present invention When the watch equipped with the thermoelectric unit of the present invention is attached to the wrist, the outer surface of the central convex portion 226 d of the back cover 2 26 contacts the arm, and transfers heat from the arm to the thermoelectric unit 180. be able to.
- the thickness of the air layer existing between the back lid 2 26 and the movement 204 is reduced by the central convex part 2 26 d of the back lid 2 26 and the movement 204. Between can be larger. That is, the thickness of the air layer existing between the components constituting the driving part of the timepiece and the back cover 2 26 is determined by the components constituting the driving part of the timepiece included in the movement 204, and the thermoelectric generation unit It is configured to be larger than the distance between the 180th first heat transfer plate 120 and the central portion of the opposite back cover 22.
- thermoelectric generation unit 180 can be increased.
- the present invention is configured as described above in a timepiece and a portable electronic device provided with a thermoelectric generation unit, and has the following effects.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromechanical Clocks (AREA)
- Electric Clocks (AREA)
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP98947823A EP0945769B1 (en) | 1997-10-14 | 1998-10-13 | Watch provided with thermoelectric generation unit |
| DE69827923T DE69827923T2 (de) | 1997-10-14 | 1998-10-13 | Uhr mit thermoelektrischer generatorvorrichtung |
| US09/319,629 US6359841B1 (en) | 1997-10-14 | 1998-10-13 | Timepiece and portable electronic device having thermoelectric generator unit |
Applications Claiming Priority (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9/280925 | 1997-10-14 | ||
| JP28092597A JP3611954B2 (ja) | 1997-10-14 | 1997-10-14 | 電子機器 |
| JP9/358074 | 1997-12-25 | ||
| JP35807497 | 1997-12-25 | ||
| JP10/42543 | 1998-02-24 | ||
| JP10042543A JP2946205B1 (ja) | 1997-12-25 | 1998-02-24 | 熱発電ユニット並びに該ユニットを用いた携帯用電子機器 |
| JP10/249327 | 1998-09-03 | ||
| JP10249327A JP2998088B1 (ja) | 1998-09-03 | 1998-09-03 | 熱発電ユニットを備えた時計 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1999019775A1 true WO1999019775A1 (en) | 1999-04-22 |
Family
ID=27461215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP1998/004588 Ceased WO1999019775A1 (en) | 1997-10-14 | 1998-10-13 | Watch provided with thermoelectric generation unit |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US6359841B1 (ja) |
| EP (1) | EP0945769B1 (ja) |
| DE (1) | DE69827923T2 (ja) |
| WO (1) | WO1999019775A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003219670A (ja) * | 2002-01-22 | 2003-07-31 | Ings Shinano:Kk | 熱電発電システム及び熱電発電装置 |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001092969A1 (en) * | 2000-05-31 | 2001-12-06 | Citizen Watch Co., Ltd. | Thermal power generating timepiece and rear cover for thermal power generating timepiece |
| JP2003337185A (ja) * | 2002-05-20 | 2003-11-28 | Seiko Instruments Inc | 携帯型電子機器 |
| US8198527B2 (en) * | 2008-12-08 | 2012-06-12 | Perpetua Power Source Technologies, Inc. | Field-deployable electronics platform having thermoelectric power source and electronics module |
| US8269393B2 (en) * | 2009-06-18 | 2012-09-18 | Hamilton Sundstrand Corporation | Crowned end winding support for main wound field of a generator |
| SI2320383T1 (sl) * | 2009-10-20 | 2012-09-28 | Kapsch Trafficcom Ag | Naprava za vozilo |
| DE102011009428A1 (de) * | 2011-01-26 | 2012-07-26 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Thermoelektrisches Modul mit einer Wärmeleitschicht |
| JP5843259B2 (ja) * | 2011-09-12 | 2016-01-13 | セイコーインスツル株式会社 | 熱発電携帯機器および熱発電携帯機器の発電制御方法 |
| JP5751261B2 (ja) * | 2013-01-17 | 2015-07-22 | ヤマハ株式会社 | 熱電発電ユニット |
| US9456529B2 (en) * | 2014-06-06 | 2016-09-27 | Google Technology Holdings LLC | Heat management structure for a wearable electronic device and method for manufacturing same |
| JP6767928B2 (ja) * | 2017-05-26 | 2020-10-14 | 株式会社Kelk | 熱電発電トランスミッタ |
| US10433467B2 (en) * | 2017-06-21 | 2019-10-01 | Microsoft Technology Licensing, Llc | Thermal dissipation system for wearable electronic devices |
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- 1998-10-13 WO PCT/JP1998/004588 patent/WO1999019775A1/ja not_active Ceased
- 1998-10-13 US US09/319,629 patent/US6359841B1/en not_active Expired - Fee Related
- 1998-10-13 EP EP98947823A patent/EP0945769B1/en not_active Expired - Lifetime
- 1998-10-13 DE DE69827923T patent/DE69827923T2/de not_active Expired - Fee Related
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| JPH0732970U (ja) * | 1993-11-25 | 1995-06-16 | 百合子 鳥崎 | 小型モーターつきサーモ・モジュール装置 |
| JPH0836071A (ja) * | 1994-05-16 | 1996-02-06 | Citizen Watch Co Ltd | 熱電発電時計 |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP0945769B1 (en) | 2004-12-01 |
| DE69827923T2 (de) | 2005-04-07 |
| EP0945769A1 (en) | 1999-09-29 |
| DE69827923D1 (de) | 2005-01-05 |
| EP0945769A4 (en) | 2000-05-10 |
| US6359841B1 (en) | 2002-03-19 |
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