JPH07296823A - Thermal battery having piezoelectric ignitor - Google Patents
Thermal battery having piezoelectric ignitorInfo
- Publication number
- JPH07296823A JPH07296823A JP8675794A JP8675794A JPH07296823A JP H07296823 A JPH07296823 A JP H07296823A JP 8675794 A JP8675794 A JP 8675794A JP 8675794 A JP8675794 A JP 8675794A JP H07296823 A JPH07296823 A JP H07296823A
- Authority
- JP
- Japan
- Prior art keywords
- piezoelectric
- thermal battery
- ignition
- bridge
- battery
- 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.)
- Pending
Links
Classifications
-
- Y02E60/12—
Landscapes
- Primary Cells (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は熱電池に用いる圧電点火
具の構造に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of a piezoelectric igniter used in a thermal battery.
【0002】[0002]
【従来の技術】熱電池は、KCl−LiClなどの共融
塩を電解質とする電池で、常温では電解質が非電導性の
固体であるため、電池としては不活性な状態にあるが高
温に加熱すると電解質が良好なイオン電導性の溶融塩と
なり、電池として活性な状態となって外部に電力を供給
し得るような性質の電池である。2. Description of the Related Art A thermal battery is a battery in which a eutectic salt such as KCl-LiCl is used as an electrolyte. Since the electrolyte is a non-conductive solid at room temperature, it is inactive as a battery but is heated to a high temperature. Then, the electrolyte becomes a molten salt having a good ionic conductivity and becomes a battery in an active state so that power can be supplied to the outside.
【0003】この種の電池には貯蔵中の自己放電が実用
上皆無で、長期保存後においても製造直後と同様の特性
を発揮する。製造時に素電池加熱用の発熱剤を組み込
み、電池使用に際して発熱剤を作用させ、瞬時に電池を
活性化できるので緊急の用途に便利である。水溶液電解
液では用いることができないCaやLiを負極に用いる
ことができるので素電池当たりの電圧を高め得る。高温
で作動させるため電極反応が進み易く、高出力特性を有
する。などの特徴があることから、各種飛翔体、誘導機
器といった分野の電源として実用化されている。This type of battery has practically no self-discharge during storage, and exhibits the same characteristics as immediately after manufacture even after long-term storage. A heating agent for heating the unit cell is incorporated at the time of manufacture, and the heating agent can be activated when the battery is used to instantly activate the battery, which is convenient for emergency applications. Since Ca or Li, which cannot be used in the aqueous electrolyte solution, can be used in the negative electrode, the voltage per unit cell can be increased. Since it is operated at a high temperature, the electrode reaction is easy to proceed and it has high output characteristics. Since it has such characteristics, it has been put to practical use as a power source in the fields of various flying objects and induction equipment.
【0004】従来の圧電点火具を用いた熱電池について
図1を用いて説明する。図1において1はLiを負極、
KCl−LiClを電解質、FeS2を正極とする素電
池、2はFeとKClO4の混合物を成形した発熱剤で
これらを積層した発電部を構成している。8は断熱層で
無機質ペーパー等からなり発電部の保温と熱電池周辺器
材の熱損傷を防ぐために配置されている。10は金属製
外装容器でケースと蓋からなり、嵌め合い部で溶接密閉
されている。A thermal battery using a conventional piezoelectric igniter will be described with reference to FIG. In FIG. 1, 1 is Li as a negative electrode,
A unit cell 2 having KCl-LiCl as an electrolyte and FeS 2 as a positive electrode constitutes a power generation section in which a heating agent formed by molding a mixture of Fe and KClO 4 is laminated. Reference numeral 8 denotes a heat insulating layer which is made of inorganic paper or the like and is arranged to keep the heat of the power generation section and prevent thermal damage to peripheral equipment of the thermal battery. Reference numeral 10 denotes a metal outer container, which includes a case and a lid, and is welded and hermetically sealed at a fitting portion.
【0005】3は圧電点火具で、電池外部に装着されて
いる圧電式起動装置11に外圧を加えることにより発生
する高電圧を点火具端子4に導くことにより、その高電
圧エネルギーで圧電点火具3の発火薬が発火し、9の着
火パッドに燃え移りさらに発電部側部に配置されている
導火帯を通じて加熱剤2が燃焼し、素電池1が活性化さ
れ出力端子6、7を通じて外部に電力が供給される。Reference numeral 3 denotes a piezoelectric igniter, which introduces a high voltage generated by applying an external pressure to the piezoelectric starting device 11 mounted outside the battery to the igniter terminal 4 so that the piezoelectric igniter uses the high voltage energy. The igniting agent of 3 ignites, burns to the ignition pad of 9 and further burns the heating agent 2 through the igniting zone arranged on the side of the power generation section, and the unit cell 1 is activated to the outside through the output terminals 6 and 7. Power is supplied.
【0006】[0006]
【発明が解決しようとする課題】しかしながら、起動の
ために設けられている圧電点火具は図2に細部を示す如
く電橋を兼ねる電橋リード線13がプラスチックまたは
ガラスからなる電橋リード線保持体12を介して並行に
配置されている。通常電橋の火花放電部の極間距離は
0.6〜0.8mmに対し、電橋リード線は1.0mm前後
に固定されており絶縁距離が十分確保されてたいない。
そのため高電圧エネルギーが漏洩し発火の信頼性が乏し
く、Zrを主剤とする発火薬14の20〜30%が発火
しない問題があった。However, as shown in detail in FIG. 2, the piezoelectric igniter provided for activation has a bridge lead wire 13 which also serves as a bridge and is made of plastic or glass. They are arranged in parallel via the body 12. The distance between the spark discharge parts of a normal bridge is 0.6 to 0.8 mm, while the bridge lead wire is fixed at around 1.0 mm, and the insulation distance is not sufficiently secured.
Therefore, there is a problem that high voltage energy is leaked, reliability of ignition is poor, and 20 to 30% of the ignition powder 14 containing Zr as a main component does not ignite.
【0007】その問題を解決する手段として図2の15
に示す如く電橋リード線13露出部をエポキシ樹脂等で
絶縁処理を施したが、それでも1〜5%の不発火を解消
できなかったうえに絶縁処理には一個あたり10〜15
分の時間を要するなど満足すべき結果が得られなかっ
た。As means for solving the problem, 15 in FIG.
The exposed part of the bridge lead wire 13 was insulated with epoxy resin etc. as shown in, but it still couldn't eliminate 1-5% of non-ignition and 10-15
Satisfactory results were not obtained, such as taking minutes.
【0008】また圧電点火具の外径寸法を大きく、例え
ば10mm以上にすれば電橋リード線間の間隔は確保でき
るが、小形・高出力を要求される熱電池の性格上好まし
い手段ではない。Further, if the outer diameter of the piezoelectric igniter is large, for example, 10 mm or more, the distance between the lead wires of the bridge can be secured, but this is not a preferable means in view of the characteristics of a thermal battery that requires a small size and high output.
【0009】本発明は、上記のような課題を解決するも
ので、発火の信頼性が乏しくなく、製造工程が簡略化で
きる熱電池用圧電点火具を提供することを目的とする。The present invention solves the above problems, and an object of the present invention is to provide a piezoelectric igniter for a thermal battery, which is not poor in reliability of ignition and which can simplify the manufacturing process.
【0010】[0010]
【課題を解決するための手段】本発明はこの問題を解決
するために圧電点火具の電橋リード線保持方法に工夫を
加え、夫々電橋を水平状態で対向させて配置固定するこ
とにより絶縁距離を確保する手段によって解決をはか
る。In order to solve this problem, the present invention is devised in a method of holding a bridge lead wire of a piezoelectric igniter, and insulates by fixing and fixing each bridge in a horizontal state. Measures are taken by means of securing a distance.
【0011】[0011]
【作用】この様に、高電圧エネルギーの漏洩を防止し発
火の信頼性を向上させ、そのうえ従来の如き電橋リード
線露出の絶縁処理時間も不要としたものである。As described above, the leakage of high voltage energy is prevented, the reliability of ignition is improved, and the conventional insulation treatment time for exposing the lead wire of the bridge is unnecessary.
【0012】[0012]
【実施例】以下本発明の一実施例を図3を用いて説明す
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG.
【0013】図3は本発明の実施例である圧電点火具の
断面図である。17は電橋を兼ねた電橋リード線で、図
に示す如く夫々の電橋を対向させて電橋の極間距離を
0.4〜0.8mmに保ち、プラスチック製電橋保持体1
6にて保持固定されている。また電橋保持体16の凹部
にはジルコニウムを主体とする発火薬18が充填されて
いる。このように構成された圧電点火具を従来例で説明
した図1の圧電点火具3の部分にとりつけて従来同様
に、電池外部に装着されている圧電式起動装置11に外
圧を加えることにより発生する高電圧を点火具端子4に
導くことにより、その高電圧エネルギーで圧電点火具の
発火薬が発火し、9のパッドに燃え移りさらに発電部側
部に配置されている導火帯を通じて加熱剤2が燃焼し、
素電池1が活性化され出力端子6,7を通じて外部に電
力が供給される。FIG. 3 is a sectional view of a piezoelectric igniter according to an embodiment of the present invention. Reference numeral 17 is a bridge lead wire that also serves as a bridge, and as shown in the figure, the bridges are made of plastics and are held at a distance of 0.4 to 0.8 mm with the bridges facing each other.
It is held and fixed at 6. Further, the depression of the bridge holder 16 is filled with an ignition charge 18 mainly containing zirconium. The piezoelectric igniter configured as described above is attached to the portion of the piezoelectric igniter 3 of FIG. 1 described in the conventional example, and is generated by applying an external pressure to the piezoelectric starter 11 mounted outside the battery as in the conventional case. By introducing a high voltage to the igniter terminal 4, the igniting agent of the piezoelectric igniter is ignited by the high voltage energy, and the igniting agent of the piezoelectric igniter is burned and transferred to the pad of 9 and the heating agent 2 through the ignition zone arranged on the side of the power generation section. Burns,
The unit cell 1 is activated and electric power is supplied to the outside through the output terminals 6 and 7.
【0014】本発明の圧電点火具を備えた熱電池、10
0個について活性化試験を実施したところ、圧電点火具
は全て発火し、電池は正常に活性化した。A thermal battery provided with the piezoelectric igniter of the present invention, 10
When the activation test was performed on 0 pieces, all the piezoelectric igniters ignited and the battery was activated normally.
【0015】[0015]
【発明の効果】以上の様に本発明の圧電点火具は発火の
信頼性が高く、しかも電橋リード部の絶縁処理も不要と
なり製造工数の低減を実現するなど極めて有用な発明で
ある。As described above, the piezoelectric igniter of the present invention is a highly useful invention in that it has a high reliability of ignition and that the insulation treatment of the bridge lead portion is not required and the number of manufacturing steps is reduced.
【図1】圧電点火具を備えた熱電池の全体構造断面図FIG. 1 is an overall structural cross-sectional view of a thermal battery equipped with a piezoelectric igniter.
【図2】従来の圧電点火具を示す断面図FIG. 2 is a sectional view showing a conventional piezoelectric igniter.
【図3】本発明の圧電点火具を示す断面図FIG. 3 is a sectional view showing a piezoelectric igniter of the present invention.
1 素電池 2 発熱剤 3 圧電点火具 4 点火具端子 6 出力端子 7 出力端子 8 断熱層 9 着火パッド 10 外装容器 11 圧電式起動装置 12 電橋リード線保持体 13 電橋リード線 14 発火薬 15 エポキシ樹脂等(絶縁処理) 16 電橋保持体 17 電橋リード線 18 発火薬 1 Unit Battery 2 Exothermic Agent 3 Piezoelectric Ignition Device 4 Ignition Device Terminal 6 Output Terminal 7 Output Terminal 8 Thermal Insulation Layer 9 Ignition Pad 10 Exterior Container 11 Piezoelectric Starter 12 Bridge Lead Wire Holder 13 Bridge Lead Wire 14 Ignition Charge 15 Epoxy resin, etc. (insulation treatment) 16 Bridge retainer 17 Bridge lead wire 18 Explosive
───────────────────────────────────────────────────── フロントページの続き (72)発明者 木村 和弘 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuhiro Kimura 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.
Claims (1)
発熱剤に着火するための着火パッドと圧電起動装置によ
り発火する圧電点火具を有する熱電池であって、前期圧
電点火具は一対の電橋または電橋リード線を並行部分を
設けることなく、発火薬容器を兼ねた絶縁性電橋保持体
に相対して適切な極間距離を保持して固定し、絶縁性電
橋保持体凹部に発火薬を充填したことを特徴とする圧電
点火具を備えた熱電池。1. A thermal battery comprising a power generator in which a unit cell and a heat generating agent are alternately laminated, an ignition pad for igniting the heat generating agent, and a piezoelectric igniter ignited by a piezoelectric starting device. A pair of bridges or bridge lead wires are fixed by holding an appropriate inter-electrode distance relative to the insulating bridge holder that also serves as the pyrotechnic container without providing parallel parts. A thermal battery provided with a piezoelectric igniter, characterized in that a body recess is filled with an ignition agent.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8675794A JPH07296823A (en) | 1994-04-25 | 1994-04-25 | Thermal battery having piezoelectric ignitor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8675794A JPH07296823A (en) | 1994-04-25 | 1994-04-25 | Thermal battery having piezoelectric ignitor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH07296823A true JPH07296823A (en) | 1995-11-10 |
Family
ID=13895632
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8675794A Pending JPH07296823A (en) | 1994-04-25 | 1994-04-25 | Thermal battery having piezoelectric ignitor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH07296823A (en) |
-
1994
- 1994-04-25 JP JP8675794A patent/JPH07296823A/en active Pending
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