JP4417703B2 - Thermal battery - Google Patents

Thermal battery Download PDF

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JP4417703B2
JP4417703B2 JP2003397672A JP2003397672A JP4417703B2 JP 4417703 B2 JP4417703 B2 JP 4417703B2 JP 2003397672 A JP2003397672 A JP 2003397672A JP 2003397672 A JP2003397672 A JP 2003397672A JP 4417703 B2 JP4417703 B2 JP 4417703B2
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ignition
cylindrical member
thermal battery
holding body
adhesive layer
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JP2005158606A (en
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和也 大道
保廣 西村
和弘 木村
亨行 梅林
忠彦 岩崎
三郎 阿内
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Showa Kinzoku Kogyo Co Ltd
Panasonic Corp
Panasonic Holdings Corp
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Showa Kinzoku Kogyo Co Ltd
Panasonic Corp
Matsushita Electric Industrial Co Ltd
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Description

本発明は、熱電池、さらに詳しくはその点火栓に関する。   The present invention relates to a thermal battery, and more particularly to a spark plug thereof.

従来の熱電池の構造を図1を参照しながら説明する。図1は、一般的な熱電池の一部を切り欠いた概略斜視図である。
正極層、負極層および電解質層からなる素電池7と発熱剤5とを交互に積み重ねた発電体が、金属製の外装ケース1に収納されている。前記発電体の最上部には、着火パッド4が配され、前記着火パッド4の上部に近接して点火栓3が設置されている。発電体の周囲には導火帯6が配され、外装ケース1と、発電体との間には、断熱材9が充填されている。
The structure of a conventional thermal battery will be described with reference to FIG. FIG. 1 is a schematic perspective view in which a part of a general thermal battery is cut away.
A power generation body in which unit cells 7 composed of a positive electrode layer, a negative electrode layer, and an electrolyte layer and heat generating agents 5 are alternately stacked is housed in a metal outer case 1. An ignition pad 4 is arranged on the uppermost part of the power generator, and a spark plug 3 is installed in the vicinity of the upper part of the ignition pad 4. A heat conduction zone 6 is arranged around the power generation body, and a heat insulating material 9 is filled between the outer case 1 and the power generation body.

外装ケース1は、一対の点火端子2および正負極端子を備えた電池蓋10により封口されている。前記一対の点火端子2は、一対のリード線に接続されている。
また、正極端子は、正極リード板を介して発電体最上部の素電池7の正極層に接続されている。一方、負極端子は、負極リード板8を介して発電体最下部の素電池7の負極層に接続されている。
The outer case 1 is sealed by a battery lid 10 having a pair of ignition terminals 2 and positive and negative terminals. The pair of ignition terminals 2 is connected to a pair of lead wires.
Moreover, the positive electrode terminal is connected to the positive electrode layer of the unit cell 7 at the top of the power generator via a positive electrode lead plate. On the other hand, the negative electrode terminal is connected to the negative electrode layer of the unit cell 7 at the lowest part of the power generator via the negative electrode lead plate 8.

点火端子2に接続された電源より、点火端子2に電流が印加されると点火栓3が発火する。これにより、着火パッド4や導火帯6へ燃焼が伝播され、発熱剤5が燃焼して素電池7が加熱される。そして、素電池7を構成する溶融塩を含む電解質層が溶融し、イオン伝導体となる。これにより、電池が活性化し、放電が可能となる。   When a current is applied to the ignition terminal 2 from a power source connected to the ignition terminal 2, the spark plug 3 is ignited. As a result, the combustion is propagated to the ignition pad 4 and the igniting zone 6, the exothermic agent 5 is combusted, and the unit cell 7 is heated. And the electrolyte layer containing the molten salt which comprises the unit cell 7 fuse | melts, and becomes an ionic conductor. As a result, the battery is activated and can be discharged.

ここで、図2は、点火栓3の一例の概略縦断面図を示す。
点火栓3は、一対のリード線13を保持するセラミックス製の保持体14、一対のリード線13の先端部同士を結ぶ電橋線12、電橋線12を覆う点火薬11、保持体14および点火薬11を収容する筒状部材15からなる。
さらに、上下部に開口部を有するケース16により、筒状部材15が収容される。上部開口部をリード線13が通り、下部開口部は、点火薬11が外部に出ないように、内側より金属板18で塞がれている。発火時には、この下部開口部より着火パッド4へ燃焼が伝播する。
Here, FIG. 2 shows a schematic longitudinal sectional view of an example of the spark plug 3.
The spark plug 3 includes a ceramic holding body 14 that holds a pair of lead wires 13, an electric bridge wire 12 that connects the tip ends of the pair of lead wires 13, an ignition agent 11 that covers the electric bridge wire 12, a holding body 14, and It consists of a cylindrical member 15 that houses the ignition powder 11.
Further, the cylindrical member 15 is accommodated by the case 16 having openings at the upper and lower portions. The lead wire 13 passes through the upper opening, and the lower opening is closed with a metal plate 18 from the inside so that the ignition agent 11 does not go outside. During ignition, combustion propagates from the lower opening to the ignition pad 4.

ここで、点火栓3の感度が良すぎると、発火電流よりも小さい電流を印加した場合に、熱電池が誤作動を起こす可能性がある。これに対し、所定の発火電流に満たない電流が流れる不発火条件下において、点火栓3の発火を完全に防ぎ、誤作動を起こさない熱電池の開発が求められている。   Here, if the sensitivity of the spark plug 3 is too good, the thermal battery may malfunction when a current smaller than the ignition current is applied. On the other hand, there is a demand for the development of a thermal battery that completely prevents ignition of the spark plug 3 and does not cause malfunction under non-ignition conditions in which a current less than a predetermined ignition current flows.

例えば、特許文献1では、一対のリード線の間に抵抗性加熱素子を配することにより、400mAの無発火電流(確実に電池が作動しない電流)を保証することが開示されている。
しかし、点火栓の保持体と筒状部材との間の接触状態により、点火栓の放熱度合いにばらつきが生じ、1Aの電流を5分間印加する不発火条件下において、点火栓が発火し、熱電池が誤作動を起こす場合があった。
特開2000−241099号公報
For example, Patent Document 1 discloses that a resistive heating element is provided between a pair of lead wires to guarantee a non-ignition current of 400 mA (a current that does not reliably operate the battery).
However, depending on the contact state between the spark plug holder and the cylindrical member, the spark plug's heat dissipation varies, and the spark plug ignites under the non-firing condition in which a current of 1A is applied for 5 minutes. The battery may malfunction.
JP 2000-241099 A

そこで、上記の問題を解決するために、本発明は、点火栓における保持体と筒状部材との接触状態を改善し、かつ保持体から筒状部材への熱伝導性を向上させることにより、所定の発火電流未満の電流が流れても誤作動を起こさない高信頼性の熱電池を提供することを目的とする。   Therefore, in order to solve the above problem, the present invention improves the contact state between the holder and the cylindrical member in the spark plug, and improves the thermal conductivity from the holder to the cylindrical member. An object of the present invention is to provide a highly reliable thermal battery that does not malfunction even when a current less than a predetermined ignition current flows.

本発明の熱電池は、素電池と発熱剤とを交互に積層した発電体、前記発電体の上部に配された着火パッド、および前記着火パッドを着火させる点火栓を具備した熱電池であって、前記点火栓が、一対のリード線を保持する保持体、前記一対のリード線の先端部同士を結ぶ電橋線、前記電橋線を覆う点火薬、ならびに前記保持体および点火薬を収容する筒状部材からなり、前記保持体と筒状部材との間に、熱伝導率が10〜60W/m・degである接着層が形成されたことを特徴とする。
前記接着層が、銀粉を含むエポキシ樹脂からなる熱伝導性接着剤により形成されることが好ましい。
前記筒状部材が、金属製であることが好ましい。
The thermal battery of the present invention is a thermal battery comprising a power generation body in which unit cells and a heat generating agent are alternately laminated, an ignition pad disposed on the power generation body, and an ignition plug for igniting the ignition pad. The ignition plug accommodates the holding body that holds the pair of lead wires, the electric bridge wire that connects the tip ends of the pair of lead wires, the ignition agent that covers the electric bridge wire, and the holding body and the ignition agent. It is made of a cylindrical member, and an adhesive layer having a thermal conductivity of 10 to 60 W / m · deg is formed between the holding body and the cylindrical member.
It is preferable that the adhesive layer is formed of a thermally conductive adhesive made of an epoxy resin containing silver powder.
The cylindrical member is preferably made of metal.

本発明によれば、熱電池の点火栓における保持体と筒状部材との接触状態を改善し、かつ保持体から筒状部材への熱伝導性を向上させることができ、所定の発火電流未満の電流が流れても誤作動を起こさない高信頼性の熱電池を提供することができる。   According to the present invention, the contact state between the holder and the cylindrical member in the ignition plug of the thermal battery can be improved, and the thermal conductivity from the holder to the cylindrical member can be improved, and less than a predetermined ignition current. It is possible to provide a highly reliable thermal battery that does not cause a malfunction even when the current flows.

本発明の熱電池における点火栓3の一実施の形態を図3を参照しながら説明する。図3は、本発明の熱電池における点火栓の概略縦断面図である。
点火栓3は、一対のリード線13を保持する保持体14、一対のリード線13の先端部同士を結ぶ電橋線12、電橋線12を覆う点火薬11、ならびに保持体14および点火薬11を収容、保持する筒状部材15からなる。
そして、保持体14と筒状部材15との間に、熱伝導性を有する接着層17が形成されている。この接着層17により、保持体14と筒状部材15との接着性が改善され、保持体14から筒状部材15への熱伝導性が改善される。このため、発火電流未満で起こる熱電池の誤作動を確実に防止することができる。
An embodiment of the spark plug 3 in the thermal battery of the present invention will be described with reference to FIG. FIG. 3 is a schematic longitudinal sectional view of a spark plug in the thermal battery of the present invention.
The spark plug 3 includes a holding body 14 that holds a pair of lead wires 13, an electric bridge wire 12 that connects tips of the pair of lead wires 13, an ignition agent 11 that covers the electric bridge wire 12, and a holding body 14 and an ignition agent. It consists of a cylindrical member 15 that houses and holds 11.
An adhesive layer 17 having thermal conductivity is formed between the holding body 14 and the cylindrical member 15. The adhesive layer 17 improves the adhesion between the holding body 14 and the cylindrical member 15 and improves the thermal conductivity from the holding body 14 to the cylindrical member 15. For this reason, it is possible to reliably prevent malfunction of the thermal battery that occurs below the ignition current.

前記接着層17は、銀粉を含むエポキシ樹脂からなる熱伝導性接着剤を用いて形成されることが好ましい。保持体14と筒状部材15との接着性および保持体14から筒状部材15への熱伝導性に優れた接着層17が得られる。
この熱伝導性接着剤としては、例えば、エポキシ樹脂をイソプロピルアルコールまたはグリコールエーテル等の溶剤に溶かした溶液中に、伝熱材として銀粉を88〜93重量%分散させて得られる接着剤を用いることができる。
The adhesive layer 17 is preferably formed using a heat conductive adhesive made of an epoxy resin containing silver powder. An adhesive layer 17 having excellent adhesion between the holding body 14 and the cylindrical member 15 and thermal conductivity from the holding body 14 to the cylindrical member 15 is obtained.
As this heat conductive adhesive, for example, an adhesive obtained by dispersing 88 to 93% by weight of silver powder as a heat transfer material in a solution obtained by dissolving an epoxy resin in a solvent such as isopropyl alcohol or glycol ether is used. Can do.

接着層17は、上記の熱伝導性接着剤を保持体14の側面の円周部に均一に塗布し、筒状部材15に挿入した後、所定の条件で接着剤を硬化させることにより得られる。このとき、得られた接着層17は、エポキシ樹脂中に銀粉がほぼ均一に分散した状態である。   The adhesive layer 17 is obtained by uniformly applying the above-described heat conductive adhesive to the circumferential portion of the side surface of the holding body 14 and inserting it into the cylindrical member 15 and then curing the adhesive under predetermined conditions. . At this time, the obtained adhesive layer 17 is in a state in which silver powder is almost uniformly dispersed in the epoxy resin.

接着層17の熱伝導率は、10W/m・deg以上が好ましい。
電橋線12で発生した熱は、保持体14に伝わり、接着層17を介して、筒状部材15およびケース16に伝わる。したがって、接着層17の熱伝導性が大きいほど保持体14からの伝熱が大きくなる。すなわち、接着層17の熱伝導性が大きいほど電橋線12の温度の上昇が抑制される。
接着層17の熱伝導率が10W/m・deg以上の場合、ガラスからなる保持体14の熱伝導率が10W/m・deg以下であるので、上記のような電橋線の温度の上昇を抑制することができる。
点火薬11には、従来より用いられているものを用いればよい。
The thermal conductivity of the adhesive layer 17 is preferably 10 W / m · deg or more.
The heat generated in the bridge 12 is transferred to the holding body 14 and transferred to the cylindrical member 15 and the case 16 via the adhesive layer 17. Therefore, the heat transfer from the holding body 14 increases as the thermal conductivity of the adhesive layer 17 increases. That is, as the thermal conductivity of the adhesive layer 17 increases, the temperature rise of the bridge 12 is suppressed.
When the thermal conductivity of the adhesive layer 17 is 10 W / m · deg or higher, the thermal conductivity of the holding body 14 made of glass is 10 W / m · deg or lower. Can be suppressed.
What is necessary is just to use the conventionally used thing for the igniting agent 11.

さらに、上下部に開口部を有するケース16に、筒状部材15が収容される。上部の開口部16aには、リード線13が通り、下部の開口部16bは、点火薬11が外部に出ないようにするとともに防湿のために内側より金属板18で塞がれている。
筒状部材15およびケース16は、優れた放熱性および高熱容量を有するため、ステンレス鋼等の金属製であることが好ましい。
Furthermore, the cylindrical member 15 is accommodated in a case 16 having openings at the upper and lower portions. The lead wire 13 passes through the upper opening 16a, and the lower opening 16b is blocked by a metal plate 18 from the inside to prevent the ignition powder 11 from going out and to prevent moisture.
The cylindrical member 15 and the case 16 are preferably made of metal such as stainless steel because they have excellent heat dissipation and high heat capacity.

上記の点火栓を用いた熱電池は、素電池と発熱剤とを交互に積層した発電体、前記発電体の上部に配された着火パッド、前記発電体の側面部を覆う導火帯等の構成部材を具備するが、これらの部材については、従来より用いられているものを用いればよい。
なお、熱伝導性を有する接着層としては、銀粉が分散したエポキシ樹脂以外でもよく、熱伝導性および放熱性を有するものであれば、他の材料を用いてもよい。
以下に本発明の実施例を詳細に説明する。
The thermal battery using the above spark plug includes a power generation body in which unit cells and a heat generating agent are alternately laminated, an ignition pad disposed on the top of the power generation body, a heat conduction belt that covers a side portion of the power generation body, and the like. Constituent members are provided, but these members may be those conventionally used.
The adhesive layer having thermal conductivity may be other than an epoxy resin in which silver powder is dispersed, and other materials may be used as long as they have thermal conductivity and heat dissipation.
Examples of the present invention will be described in detail below.

《実施例1》
図3と同様の構造の点火栓を以下のように作製した。
ニクロム線からなる電橋線12と、セラミック製の保持体14から引き出されたFe−Ni−Co系合金(コバール)(重量比Fe:Ni:Co=54:29:17)からなるリード線13の先端部とを溶接した。そして、保持体14の外側にステンレス鋼製の筒状部材15を配した。このとき、保持体14と筒状部材15との間に、熱伝導性接着剤を用いて、接着層17を形成した。
Example 1
A spark plug having the same structure as that of FIG. 3 was produced as follows.
An electric bridge wire 12 made of nichrome wire and a lead wire 13 made of Fe—Ni—Co alloy (Kovar) (weight ratio Fe: Ni: Co = 54: 29: 17) drawn from a ceramic holder 14. Welded the tip of the. A cylindrical member 15 made of stainless steel was disposed outside the holding body 14. At this time, an adhesive layer 17 was formed between the holder 14 and the cylindrical member 15 using a heat conductive adhesive.

熱伝導性接着剤には、Diemat社製のDM6030HK(熱伝導率30〜60W/m・deg)を用いた。これを0.2〜0.4mm程度の厚さで、保持体14の側面の円周部に均一に塗布し、筒状部材15に挿入した。その後、リード線側を下にして110℃で60分間保持し、ついで205℃で30分間乾燥機内にて接着剤を硬化させ、接着層17を得た。   As the heat conductive adhesive, DM6030HK (thermal conductivity 30 to 60 W / m · deg) manufactured by Diamat was used. This was applied to the circumferential portion of the side surface of the holding body 14 with a thickness of about 0.2 to 0.4 mm, and inserted into the cylindrical member 15. Thereafter, the lead wire side was held at 110 ° C. for 60 minutes, and then the adhesive was cured in a dryer at 205 ° C. for 30 minutes to obtain an adhesive layer 17.

そして、電橋線12を覆うように点火薬11を充填し、点火栓本体を得た。点火薬11には、ホウ素、過塩素酸カリウム、硝酸バリウム、および結着剤としてフッ化ビニリデンと六フッ化プロピレンの共重合体を、重量比40:30:24:6の割合で混合したものを用いた。点火薬11を充填した後、この点火栓本体をアルミニウムからなるケース16に挿入し、ケース16の上端部を内方に曲げて、筒状部材15をケース16に固定した。このとき、ケース16の開口部16bを塞ぐように、アルミニウムからなる金属板18をケース16内側に配した。   And the ignition powder 11 was filled so that the bridge line 12 might be covered, and the spark plug main body was obtained. The ignition agent 11 is a mixture of boron, potassium perchlorate, barium nitrate, and a copolymer of vinylidene fluoride and propylene hexafluoride as a binder in a weight ratio of 40: 30: 24: 6. Was used. After filling the igniting agent 11, the spark plug body was inserted into a case 16 made of aluminum, and the upper end portion of the case 16 was bent inward to fix the cylindrical member 15 to the case 16. At this time, a metal plate 18 made of aluminum was disposed inside the case 16 so as to close the opening 16 b of the case 16.

上記で得られた図3に示す点火栓を用いて、図1と同様の構造の熱電池を作製した。
発電体には素電池7と発熱剤5とを交互に複数個積み重ねたものを用い、この発電体の上部に点火栓3の開口部16bが面するように配置した。このとき、素電池は、16個用いた。正極層には、活物質としてFeS2を主とした成分を用いた。負極層には、活物質としてリチウムを主とした成分を用いた。電解質層には、Li−KCl共融塩と保持剤としてのMgOとの混合物を用いた。発熱剤5には、鉄粉と過塩素酸カリウムとの混合物を用いた。着火パッド4および導火帯6には、ジルコニウムとクロム酸バリウムの混合物を用いた。
Using the spark plug shown in FIG. 3 obtained above, a thermal battery having the same structure as in FIG. 1 was produced.
As the power generation body, one in which a plurality of unit cells 7 and heat generating agents 5 are alternately stacked is used, and the power generation body is arranged so that the opening 16b of the spark plug 3 faces the upper portion of the power generation body. At this time, 16 unit cells were used. In the positive electrode layer, a component mainly composed of FeS 2 was used as an active material. In the negative electrode layer, a component mainly composed of lithium was used as an active material. For the electrolyte layer, a mixture of Li—KCl eutectic salt and MgO as a retaining agent was used. As the exothermic agent 5, a mixture of iron powder and potassium perchlorate was used. A mixture of zirconium and barium chromate was used for the ignition pad 4 and the conduction zone 6.

《比較例1》
実施例1の点火栓の代わりに、図2に示すような点火栓を用いた以外は、実施例1と同様の方法により熱電池を作製した。図2は、点火栓の概略縦断面図であり、筒状部材15と保持体14との間に接着層17を形成しない以外は、図3と同様である。
上記で得られた実施例1および比較例1の熱電池について以下の評価を行った。
<< Comparative Example 1 >>
A thermal battery was fabricated in the same manner as in Example 1 except that an ignition plug as shown in FIG. 2 was used instead of the ignition plug of Example 1. FIG. 2 is a schematic longitudinal sectional view of the spark plug, which is the same as FIG. 3 except that the adhesive layer 17 is not formed between the cylindrical member 15 and the holding body 14.
The thermal battery of Example 1 and Comparative Example 1 obtained above was evaluated as follows.

[評価]
実施例1および比較例1の電池各40個について、点火端子間に所定の電源を接続し、発火条件として4.8Aの電流を20ms印加した。そして、このとき点火栓が発火し、活性化した電池の割合を調べた。その結果を表1に示す。
[Evaluation]
For each of the 40 batteries of Example 1 and Comparative Example 1, a predetermined power source was connected between the ignition terminals, and a current of 4.8 A was applied for 20 ms as an ignition condition. At this time, the ratio of the batteries that were ignited and activated by the spark plug was examined. The results are shown in Table 1.

Figure 0004417703
Figure 0004417703

その結果、実施例1および比較例1のいずれの場合も、全ての電池が活性化した。
また、実施例1および比較例1の電池各40個について、点火端子間に電源を接続し、不発火条件として、1.0A、1.25A、および1.5Aの電流を、それぞれ5分間印加した。このとき、点火栓が発火し、活性化して誤作動を起こした電池の割合を調べた。その結果を表2に示す。
As a result, in all cases of Example 1 and Comparative Example 1, all the batteries were activated.
Further, for each of the 40 batteries of Example 1 and Comparative Example 1, a power source was connected between the ignition terminals, and currents of 1.0 A, 1.25 A, and 1.5 A were applied for 5 minutes as non-firing conditions. did. At this time, the percentage of batteries that ignited and activated the spark plug and caused malfunction was examined. The results are shown in Table 2.

Figure 0004417703
Figure 0004417703

比較例1では、いずれの条件においても誤作動を起こした電池があったが、実施例1では、いずれの条件においても誤作動を起こした電池はなかった。
以上のことから、本発明の実施例1の熱電池は、発火条件では、確実に作動し、かつ不発火条件では、誤作動を起こさないため、高い信頼性を有することがわかった。
In Comparative Example 1, there was a battery that malfunctioned under any condition, but in Example 1, there was no battery that malfunctioned under any condition.
From the above, it was found that the thermal battery of Example 1 of the present invention operates reliably under ignition conditions and does not malfunction under non-ignition conditions, and thus has high reliability.

以上のように、本発明の熱電池は、一対のリード線を保持する保持体から前記保持体を収容する筒状部材への熱伝導性に優れた点火栓を有するため、高信頼性の誘導機器用電源や緊急用電源等に適用することができる。   As described above, the thermal battery of the present invention has an ignition plug with excellent thermal conductivity from a holding body that holds a pair of lead wires to a cylindrical member that houses the holding body. It can be applied to equipment power supplies, emergency power supplies, and the like.

一般的な熱電池の一部を切り欠いた概略斜視図である。It is the schematic perspective view which notched a part of common thermal battery. 従来の点火栓の概略縦断面図である。It is a schematic longitudinal cross-sectional view of the conventional ignition plug. 本発明の点火栓の概略縦断面図である。It is a schematic longitudinal cross-sectional view of the ignition plug of this invention.

符号の説明Explanation of symbols

1 外装ケース
2 点火端子
3 点火栓
4 着火パッド
5 発熱剤
6 導火帯
7 素電池
8 負極リード板
9 断熱材
10 電池蓋
11 点火薬
12 電橋線
13 リード線
14 保持体
15 筒状部材
16 ケース
16a、16b 開口部
17 接着層
18 金属板
DESCRIPTION OF SYMBOLS 1 Exterior case 2 Ignition terminal 3 Spark plug 4 Ignition pad 5 Heating agent 6 Heating zone 7 Unit cell 8 Negative electrode lead board 9 Heat insulating material 10 Battery cover 11 Igniting agent 12 Electric bridge wire 13 Lead wire 14 Holder 15 Cylindrical member 16 Case 16a, 16b Opening 17 Adhesive layer 18 Metal plate

Claims (3)

素電池と発熱剤とを交互に積層した発電体、前記発電体の上部に配された着火パッド、前記着火パッドを着火させる点火栓を具備した熱電池であって、
前記点火栓が、一対のリード線を保持する保持体、前記一対のリード線の先端部同士を結ぶ電橋線、前記電橋線を覆う点火薬、ならびに前記保持体および点火薬を収容する筒状部材からなり、
前記保持体と筒状部材との間に、熱伝導率が10〜60W/m・degである接着層が形成されたことを特徴とする熱電池。
A thermal battery comprising a power generator in which unit cells and a heat generating agent are alternately laminated, an ignition pad disposed on an upper portion of the power generator, and an ignition plug for igniting the ignition pad,
The ignition plug has a holding body that holds a pair of lead wires, an electric bridge wire that connects the tip ends of the pair of lead wires, an ignition agent that covers the electric bridge wire, and a cylinder that houses the holding body and the ignition agent It consists of a member
A thermal battery , wherein an adhesive layer having a thermal conductivity of 10 to 60 W / m · deg is formed between the holding body and the cylindrical member.
前記接着層が、銀粉を含むエポキシ樹脂からなる熱伝導性接着剤により形成される請求項1記載の熱電池。   The thermal battery according to claim 1, wherein the adhesive layer is formed of a heat conductive adhesive made of an epoxy resin containing silver powder. 前記筒状部材が、金属製である請求項1記載の熱電池。   The thermal battery according to claim 1, wherein the cylindrical member is made of metal.
JP2003397672A 2003-11-27 2003-11-27 Thermal battery Expired - Lifetime JP4417703B2 (en)

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