JP2527541B2 - Method for manufacturing thermoelectric element for electronic wrist watch - Google Patents
Method for manufacturing thermoelectric element for electronic wrist watchInfo
- Publication number
- JP2527541B2 JP2527541B2 JP61214338A JP21433886A JP2527541B2 JP 2527541 B2 JP2527541 B2 JP 2527541B2 JP 61214338 A JP61214338 A JP 61214338A JP 21433886 A JP21433886 A JP 21433886A JP 2527541 B2 JP2527541 B2 JP 2527541B2
- Authority
- JP
- Japan
- Prior art keywords
- thermoelectric material
- thermoelectric element
- thermoelectric
- wrist watch
- electronic wrist
- 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.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims description 11
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 210000000707 wrist Anatomy 0.000 title description 4
- 239000000463 material Substances 0.000 claims description 31
- 229920005989 resin Polymers 0.000 claims description 11
- 239000011347 resin Substances 0.000 claims description 11
- 239000003822 epoxy resin Substances 0.000 description 10
- 229920000647 polyepoxide Polymers 0.000 description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 239000011521 glass Substances 0.000 description 4
- 239000000758 substrate Substances 0.000 description 2
- 229910002908 (Bi,Sb)2(Te,Se)3 Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007772 electroless plating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
- H10N10/80—Constructional details
- H10N10/81—Structural details of the junction
- H10N10/817—Structural details of the junction the junction being non-separable, e.g. being cemented, sintered or soldered
Landscapes
- Electromechanical Clocks (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は電子腕時計のエネルギー源として利用する熱
電素子の製造方法に関するものである。TECHNICAL FIELD The present invention relates to a method for manufacturing a thermoelectric element used as an energy source for an electronic wrist watch.
本発明は得られる温度差が小さくて、しかも限られた
容積のため、微細な熱電材料を数千個も形成する必要が
ある電子腕時計のエネルギー源としての熱電素子の製造
方法において、熱電材料を厚膜法により１度耐熱部材に
形成し、この熱電材料の部分をエポキシ樹脂などの熱伝
導率の低い有機樹脂で固定し、耐熱部材を除去し、この
有機樹脂で固定された熱電材料を積層し、電極を形成す
ることにより、微細で強度の弱い熱電材料を１個１個組
立てる必要がなく効果的に、しかも低熱伝導率の小さい
有機樹脂で固定することにより、大きな温度差が生じさ
せることを可能とするものである。INDUSTRIAL APPLICABILITY The present invention provides a thermoelectric material in a method for producing a thermoelectric element as an energy source for an electronic wrist watch that requires the formation of thousands of fine thermoelectric materials because the obtained temperature difference is small and the volume is limited. Once formed into a heat resistant member by the thick film method, this thermoelectric material part is fixed with an organic resin having a low thermal conductivity such as epoxy resin, the heat resistant member is removed, and the thermoelectric material fixed with this organic resin is laminated. However, by forming the electrodes, it is not necessary to assemble the fine and weak thermoelectric materials one by one, and by fixing them with the organic resin having a low low thermal conductivity, a large temperature difference is generated. Is possible.
電子腕時計において、体温と環境との温度差を利用し
た熱電素子と大容量コンデンサや２次電池との組合わせ
により長寿命電源を得ることができる。しかし腕時計の
場合、生じる温度差は１〜３℃であり、しかも利用でき
る体積は限られており、6cm2程度が限度である。In an electronic wrist watch, a long-life power supply can be obtained by combining a thermoelectric element utilizing a temperature difference between body temperature and environment with a large capacity capacitor or a secondary battery. However, in the case of a wristwatch, the temperature difference that occurs is 1 to 3 ° C, and the usable volume is limited, and the limit is about 6 cm 2 .
常温付近で最も性能指数のすぐれた熱電材料としては
（Bi,Sb）２（Se,Te）３系があるが、この材料ではＮ形
およびＰ形ともにゼーベック係数は200μV/K程度であ
り、従ってたとえば温度差２℃で電圧2Vを得るためには
5000個の素子が必要となり、これを6cm2程度の面積内に
形成しなければならず、しかも温度差方向の厚みは5cm
程度は必要であり、このような熱電素子を１個１個組立
てるのは不可能であるため、たとえば昭和61年電気学会
全国大会講演論文集No.1194にみられるように厚膜法を
利用することが考えられる。The thermoelectric material with the highest figure of merit at around room temperature is (Bi, Sb) 2 (Se, Te) 3 series, but this material has Seebeck coefficient of about 200 μV / K for both N type and P type. For example, to obtain a voltage of 2V with a temperature difference of 2 ° C,
5000 elements are required and must be formed within an area of about 6 cm 2 , and the thickness in the temperature difference direction is 5 cm.
Since it is impossible to assemble such thermoelectric elements one by one, it is necessary to use the thick film method, for example, as shown in Proc. It is possible.
厚膜法で熱電材料を形成する場合、ガラスなどの耐熱
性基板を使用する必要があり、これはエポキシ樹脂など
の有機樹脂に比較し、熱伝導率が大きいため、素子にか
かる温度差が小さくなるという欠点がある。When forming a thermoelectric material by the thick film method, it is necessary to use a heat-resistant substrate such as glass, which has a higher thermal conductivity than organic resins such as epoxy resin, so the temperature difference applied to the element is small. There is a drawback that
そこで本発明ではこのような厚膜法の欠点を克服する
ために熱電材料を耐熱性基板から有機樹脂に転写し、素
子にかかる温度差を大きくすることを目的としている。Therefore, in order to overcome such a drawback of the thick film method, the present invention aims to increase the temperature difference applied to the element by transferring the thermoelectric material from the heat resistant substrate to the organic resin.
上記問題点を解決するために本発明は、耐熱部材上に
厚膜法により形成した熱電材料を、有機樹脂で固定し、
耐熱部材を除去し、この有機樹脂で固定された熱電材料
を積層し、熱電素子を製造する。In order to solve the above problems, the present invention, a thermoelectric material formed by a thick film method on a heat-resistant member, fixed with an organic resin,
The heat resistant member is removed, and the thermoelectric material fixed with this organic resin is laminated to manufacture a thermoelectric element.
耐熱部材としてはたとえばガラスなどが使用できる
が、この場合、熱伝導率は0.01W/cm.K程度であり、一方
有機樹脂ではエポキシ樹脂で0.001W/cm.K程度までが可
能であり、熱伝導率の小さいものを使用することで、生
ずる温度差が大きくなり、従って発生する電圧が大きく
なり、変換効率も向上する。As the heat-resistant member, for example, glass can be used, but in this case, the thermal conductivity is about 0.01 W / cm.K, while the organic resin can be up to about 0.001 W / cm.K with the epoxy resin. By using a material having a low conductivity, the temperature difference that occurs becomes large, so that the voltage that occurs becomes large and the conversion efficiency also improves.
以下本発明の実施例を図面にもとづいて説明する。第
１図に示すように石英ガラス１に厚膜法により、Ｎ形熱
電材料２とＰ形熱電材料３を交互に形成する。この場
合、耐熱部材として石英ガラスを使用したが、熱電材料
が（Bi,Sb）２（Te,Se）３系の場合、約500℃での非酸
化性雰囲気での焼結が可能で、反応等により特性の劣化
を生じさせないものなら他のガラス、磁器でもよい。Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the N-type thermoelectric material 2 and the P-type thermoelectric material 3 are alternately formed on the quartz glass 1 by the thick film method. In this case, quartz glass was used as the heat-resistant member, but when the thermoelectric material is (Bi, Sb) 2 (Te, Se) 3 series, it is possible to sinter in a non-oxidizing atmosphere at about 500 ° C, Other glass or porcelain may be used as long as they do not cause the deterioration of characteristics due to the above.
これを第２図に示すようにＮ形熱電材料２とＰ形熱電
材料３をエポキシ樹脂４で被覆、固定し、次に第３図に
示すように石英ガラスを除去しＮ形熱電材料２およびＰ
形熱電材料３がエポキシ樹脂４に埋め込まれ固定させた
状態のものを製造する。石英ガラスの除去は研磨やエッ
チングなどを利用できる。The N-type thermoelectric material 2 and the P-type thermoelectric material 3 are covered and fixed with an epoxy resin 4 as shown in FIG. 2, and then the quartz glass is removed as shown in FIG. P
The thermoelectric material 3 is embedded in the epoxy resin 4 and fixed. The quartz glass can be removed by polishing or etching.
このあと、第４図に示すように熱電材料が埋め込まれ
たエポキシ樹脂４を積層する。次に第５図に示すように
電極５を形成する。Then, as shown in FIG. 4, the epoxy resin 4 in which the thermoelectric material is embedded is laminated. Next, the electrode 5 is formed as shown in FIG.
電極はスパッタや無電解めっきなどで全国に金属を形
成したあとフォトリソグラフィで所定の電極パターンと
することで容易に得られる。The electrodes can be easily obtained by forming a metal nationwide by sputtering or electroless plating and then forming a predetermined electrode pattern by photolithography.
第６図に電極を形成した熱電素子の部分断面図を示
す。FIG. 6 shows a partial cross-sectional view of a thermoelectric element having electrodes.
エポキシ樹脂４で周囲を保護されたＮ形熱電材料２と
Ｐ形熱電材料３が交互に電極５で直列に結合される。The N-type thermoelectric material 2 and the P-type thermoelectric material 3 whose periphery is protected by the epoxy resin 4 are alternately coupled in series at the electrode 5.
以上述べたように本発明では耐熱部材に厚膜法で熱電
材料を形成し、これを有機樹脂に転写することにより、
大きな温度差を生じやすい、腕時計用熱電素子を簡単に
製造できる。As described above, in the present invention, a thermoelectric material is formed on the heat-resistant member by the thick film method, and by transferring this to an organic resin,
It is possible to easily manufacture a thermoelectric element for a wristwatch that easily causes a large temperature difference.
第１図は石英ガラス上に形成された熱電材料を示す部分
断面図であり、第２図はエポキシ樹脂で固定された石英
ガラス上の熱電材料を示す部分断面図であり、第３図は
石英ガラスを除去したエポキシ樹脂に固定された熱電材
料を示す部分断面図であり、第４図は熱電材料の積層状
態を示す部分断面図であり、第５図は電極を形成した状
態の熱電素子の部分斜視図であり、第６図はその部分断
面図である。 １……石英ガラス、２……Ｎ形熱電材料 ３……Ｐ形熱電材料、４……エポキシ樹脂 ５……電極FIG. 1 is a partial sectional view showing a thermoelectric material formed on quartz glass, FIG. 2 is a partial sectional view showing a thermoelectric material on quartz glass fixed with an epoxy resin, and FIG. 3 is a quartz. FIG. 4 is a partial cross-sectional view showing a thermoelectric material fixed to an epoxy resin from which glass has been removed, FIG. 4 is a partial cross-sectional view showing a laminated state of the thermoelectric material, and FIG. 5 is a thermoelectric element with electrodes formed. FIG. 6 is a partial perspective view, and FIG. 6 is a partial sectional view thereof. 1 ... Quartz glass, 2 ... N-type thermoelectric material 3 ... P-type thermoelectric material, 4 ... Epoxy resin 5 ... Electrode
Claims (1)
し、次に熱電材料を有機樹脂で固定し、耐熱部材を除去
することにより得た、有機樹脂で固定された熱電材料を
積層し、その後、電極を形成することを特徴とする電子
腕時計用熱電素子の製造方法。1. A thermoelectric material fixed by an organic resin, which is obtained by forming a thermoelectric material on a heat resistant member by a thick film method, fixing the thermoelectric material with an organic resin, and removing the heat resistant member. Then, a method for manufacturing a thermoelectric element for an electronic wristwatch, characterized by forming electrodes thereafter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61214338A JP2527541B2 (en) | 1986-09-11 | 1986-09-11 | Method for manufacturing thermoelectric element for electronic wrist watch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61214338A JP2527541B2 (en) | 1986-09-11 | 1986-09-11 | Method for manufacturing thermoelectric element for electronic wrist watch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6370462A JPS6370462A (en) | 1988-03-30 |
| JP2527541B2 true JP2527541B2 (en) | 1996-08-28 |
Family
ID=16654105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61214338A Expired - Lifetime JP2527541B2 (en) | 1986-09-11 | 1986-09-11 | Method for manufacturing thermoelectric element for electronic wrist watch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2527541B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0760530B1 (en) * | 1994-05-16 | 1999-08-04 | Citizen Watch Co. Ltd. | Manufacture of thermoelectric power generation unit |
| JPH09186368A (en) * | 1995-10-31 | 1997-07-15 | Technova:Kk | Thick film thermoelectric element |
| US6310383B1 (en) | 1997-08-01 | 2001-10-30 | Citizen Watch Co., Ltd. | Thermoelectric element and method for manufacturing the same |
-
1986
- 1986-09-11 JP JP61214338A patent/JP2527541B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6370462A (en) | 1988-03-30 |
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