JPH0963558A - Sealed battery and safety device thereof - Google Patents

Sealed battery and safety device thereof

Info

Publication number
JPH0963558A
JPH0963558A JP7210852A JP21085295A JPH0963558A JP H0963558 A JPH0963558 A JP H0963558A JP 7210852 A JP7210852 A JP 7210852A JP 21085295 A JP21085295 A JP 21085295A JP H0963558 A JPH0963558 A JP H0963558A
Authority
JP
Japan
Prior art keywords
casing
pressure receiving
pressure
receiving member
sealed 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
Application number
JP7210852A
Other languages
Japanese (ja)
Inventor
Yoshiki Ito
芳規 伊藤
Kazuko Misaki
和子 三崎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sony Corp filed Critical Sony Corp
Priority to JP7210852A priority Critical patent/JPH0963558A/en
Publication of JPH0963558A publication Critical patent/JPH0963558A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/317—Re-sealable arrangements
    • H01M50/325—Re-sealable arrangements comprising deformable valve members, e.g. elastic or flexible valve members
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Gas Exhaust Devices For Batteries (AREA)

Abstract

PROBLEM TO BE SOLVED: To accurately set an opening pressure by designing a safety device so that the direction of a force exerted on a pressure receiving member by the action of the sealing pressure of an O-ring is perpendicular to the direction of the pressure on the pressure receiving member. SOLUTION: This safety device has a pressure receiving member 21 provided in a hole 11A in the casing 11 of a sealed battery, an O-ring 31, and a claw member 25. An annular member 13 is formed along the circumference of the hole 11A in the casing 11. The O-ring 31 is inserted between the annular member 13 on the casing 11 and the annular member 21C of the pressure receiving member 21. This constitution causes a force resulting from a sealing pressure to act in the radial direction; i.e., the force FSL resulting from the sealing pressure does not work on the claw member 25. Therefore, a force F working on the claw member 25 is derived only from a force FIN resulting from the internal pressure PIN of the sealed battery.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【発明の属する技術分野】本発明は密閉型電池に関し、
より詳細には、斯かる密閉型電池における安全装置に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealed battery,
More specifically, it relates to a safety device in such a sealed battery.

【０００２】[0002]

【従来の技術】密閉型電池には過充電等によって内部圧
力が上昇したときに電池の破裂を防止するための安全装
置又は機構が設けられている。斯かる安全装置又は機構
は、ケーシングの内部圧力が所定の値を超えると作動し
て内部圧力を解放するように構成されている。2. Description of the Related Art A sealed battery is provided with a safety device or mechanism for preventing the battery from bursting when the internal pressure rises due to overcharging or the like. Such a safety device or mechanism is configured to operate and release internal pressure when the internal pressure of the casing exceeds a predetermined value.

【０００３】図２は従来の密閉型電池の例を示す。この
密閉型電池ではケーシング１１の上蓋部にリリーフ弁型
の安全装置２０が設けられている。FIG. 2 shows an example of a conventional sealed battery. In this sealed battery, a relief valve type safety device 20 is provided on the upper lid portion of the casing 11.

【０００４】図３は従来のリリーフ弁型安全装置２０の
構成例を示す。この安全装置２０は密閉型電池のケーシ
ング１１の円形の孔１１Ａに設けられた受圧部材２１と
Ｏリング３１と爪部材２５とを有する。FIG. 3 shows an example of the structure of a conventional relief valve type safety device 20. The safety device 20 has a pressure receiving member 21, an O-ring 31, and a claw member 25 provided in a circular hole 11A of the casing 11 of the sealed battery.

【０００５】受圧部材２１はケーシング１１の孔１１Ａ
を覆っており、両者間はＯリング３１によって完全にシ
ールされている。密閉型電池の内圧が上昇するとケーシ
ング１１が破壊する前に爪部材２５が破断して、内部の
圧力が解放される。The pressure receiving member 21 is a hole 11A in the casing 11.
And is completely sealed by an O-ring 31. When the internal pressure of the sealed battery rises, the claw member 25 breaks before the casing 11 breaks, and the internal pressure is released.

【０００６】図４は受圧部材２１と爪部材２５を示す。
受圧部材２１は円板状部材２１Ａとその周囲に延在する
平行な２つの環状部材２１Ｂ、２１Ｃとを有し、斯かる
２つの環状部材２１Ｂ、２１Ｃの間にＯリング３１を受
け入れるための環状の溝２１ａが形成されている。FIG. 4 shows the pressure receiving member 21 and the claw member 25.
The pressure receiving member 21 has a disc-shaped member 21A and two parallel annular members 21B and 21C extending around the disc-shaped member 21A, and an annular shape for receiving the O-ring 31 between the two annular members 21B and 21C. Groove 21a is formed.

【０００７】図４に示すように爪部材２５はＬ字形部材
よりなる。複数の爪部材２５が内側の環状部材２１Ｂの
上側環状面に装着されている。爪部材２５の先端部がケ
ーシング１１の孔１１Ａの縁に係合するように構成され
ている。こうして爪部材２５によって受圧部材２１はケ
ーシング１１の孔１１Ａを覆うように装着される。As shown in FIG. 4, the claw member 25 is an L-shaped member. A plurality of claw members 25 are attached to the upper annular surface of the inner annular member 21B. The tip of the claw member 25 is configured to engage with the edge of the hole 11A of the casing 11. In this way, the pressure receiving member 21 is mounted by the pawl member 25 so as to cover the hole 11A of the casing 11.

【０００８】[0008]

【発明が解決しようとする課題】再び図３を参照して、
従来の安全装置に作用する力の方向を説明する。Ｏリン
グ３１を受け入れるための環状の溝２１ａの深さは、Ｏ
リング３１の円形断面の外径より僅かに小さい寸法に形
成されている。従って、安全装置が組み立てられた状態
では、Ｏリング３１は環状の溝２１ａ内にて溝２１ａの
深さ方向に弾性変形（圧縮）している。SUMMARY OF THE INVENTION Referring again to FIG.
The direction of the force acting on the conventional safety device will be described. The depth of the annular groove 21a for receiving the O-ring 31 is O
The ring 31 has a size slightly smaller than the outer diameter of the circular cross section. Therefore, when the safety device is assembled, the O-ring 31 is elastically deformed (compressed) in the annular groove 21a in the depth direction of the groove 21a.

【０００９】密閉型電池のケーシング１１の中心軸線を
図示のようにＯ−Ｏとする。Ｏリング３１は中心軸線Ｏ
−Ｏに沿った方向に弾性的に圧縮されており、斯かる弾
性力によってＯリング３１はケーシング１１の外面１１
ａと環状の溝２１ａの底面２１ｂに押しつけられてい
る。斯かる押しつけ力がシール圧ｐSLを生成する。The central axis of the casing 11 of the sealed battery is taken as OO as shown. O-ring 31 is the central axis O
The O-ring 31 is elastically compressed in the direction along −O, and the elastic force causes the O-ring 31 to move to the outer surface 11 of the casing 11.
a and the bottom surface 21b of the annular groove 21a are pressed. Such a pressing force produces the sealing pressure p SL .

【００１０】本例によると、Ｏリング３１の上側及び下
側に接触しているケーシング１１の外面１１ａと環状の
溝２１ａの底面２１ｂがシール面である。According to this embodiment, the outer surface 11a of the casing 11 and the bottom surface 21b of the annular groove 21a, which are in contact with the upper and lower sides of the O-ring 31, are sealing surfaces.

【００１１】斯かるシール圧ｐSLと密閉型電池の内圧ｐ
INによる力が受圧部材２１に作用し、且つ爪部材２５に
加わる。シール圧ｐSLに起因する力をＦSL、密閉型電池
の内圧ｐINに起因する力をＦINとする。爪部材２５に作
用する力Ｆは次のように表される。The seal pressure p SL and the internal pressure p of the sealed battery p
The force due to IN acts on the pressure receiving member 21 and is applied to the claw member 25. The force caused by the seal pressure p SL is F SL , and the force caused by the internal pressure p IN of the sealed battery is F IN . The force F acting on the claw member 25 is expressed as follows.

【００１２】[0012]

【数１】Ｆ＝ＦIN＋ＦSL [Equation 1] F = F IN + F SL

【００１３】従来の安全装置では、シール圧ｐSLに起因
する力ＦSLは、中心軸線Ｏ−Ｏの方向に作用し、内圧ｐ
INに起因する力ＦINの方向と同じである。従って爪部材
２５には内圧ｐINに起因する力ＦINばかりでなくシール
圧ｐSLに起因する力ＦSLが付加的に作用する。In the conventional safety device, the force F SL caused by the seal pressure p SL acts in the direction of the central axis O--O, and the internal pressure p SL
The force due to IN is the same as the direction of F IN . Therefore, not only the force F IN resulting from the internal pressure p IN but also the force F SL resulting from the seal pressure p SL act on the claw member 25.

【００１４】その結果、正味の最大許容内圧ｐINは小さ
くなり、爪部材２５が容易に破断することとなる。また
正確な最大許容内圧ｐINの値が不明確となる欠点があ
る。As a result, the net maximum allowable internal pressure p IN becomes small and the claw member 25 is easily broken. Further, there is a drawback that the accurate maximum allowable internal pressure p IN is unclear.

【００１５】本発明は斯かる点に鑑み、正確に且つ高い
精度にて作動する安全装置を設けた密閉型電池を提供す
ることを目的とする。In view of the above point, the present invention has an object to provide a sealed battery provided with a safety device that operates accurately and with high accuracy.

【００１６】本発明は斯かる点に鑑み、作動圧力の管理
が容易であり、正確な作動圧力範囲を有する安全装置を
設けた密閉型電池を提供することを目的とする。In view of the above-mentioned problems, it is an object of the present invention to provide a sealed battery in which operating pressure can be easily controlled and a safety device having an accurate operating pressure range is provided.

【００１７】[0017]

【課題を解決するための手段】本発明によると、電池の
ケーシングに形成された孔と該孔を閉鎖する受圧部材と
該受圧部材と上記ケーシングの間に挿入されたＯリング
と上記受圧部材を上記ケーシングに接続する爪部材とを
有し上記ケーシングの内圧が所定の値を超えたとき上記
爪部材が破断するように構成された安全装置を備えた密
閉型電池において、上記ケーシングの内圧の作用によっ
て上記受圧部材が受ける力の方向に対して、上記Ｏリン
グのシール圧の作用によって上記受圧部材が受ける力の
方向は垂直となるように構成されている。According to the present invention, a hole formed in a casing of a battery, a pressure receiving member closing the hole, an O-ring inserted between the pressure receiving member and the casing, and the pressure receiving member are provided. In a sealed battery having a safety device configured to have a claw member connected to the casing and configured to break when the internal pressure of the casing exceeds a predetermined value, the action of the internal pressure of the casing The direction of the force received by the pressure receiving member due to the action of the sealing pressure of the O-ring is perpendicular to the direction of the force received by the pressure receiving member.

【００１８】従って、爪部材にはケーシングの内圧の作
用によって上記受圧部材が受ける力のみが作用する。爪
部材には、従来の安全装置のように、Ｏリングのシール
圧の作用によって上記受圧部材が受ける力は作用しな
い。従って、爪部材の強度を調節することによって開放
圧力の値を設定することができる。Therefore, only the force received by the pressure receiving member acts on the claw member by the action of the internal pressure of the casing. Unlike the conventional safety device, the force received by the pressure receiving member due to the action of the sealing pressure of the O-ring does not act on the claw member. Therefore, the value of the opening pressure can be set by adjusting the strength of the claw member.

【００１９】本発明によると、密閉型電池において、上
記受圧部材は円板状部材とその周囲に沿って延在する環
状部材とを有し、上記ケーシングの孔の周縁に沿って環
状部材が形成され、上記２つの環状部材の間をシールす
るように上記Ｏリングが配置されていることを特徴とす
る。According to the present invention, in the sealed battery, the pressure receiving member has a disk-shaped member and an annular member extending along the periphery thereof, and the annular member is formed along the peripheral edge of the hole of the casing. The O-ring is arranged so as to seal between the two annular members.

【００２０】本発明によると、密閉型電池において、上
記爪部材は複数のＬ字形部材よりなり、上記ケーシング
の孔の周縁に沿って所定間隔にて配置されていることを
特徴とする。According to the present invention, in the sealed battery, the claw members are composed of a plurality of L-shaped members and are arranged at predetermined intervals along the peripheral edge of the hole of the casing.

【００２１】[0021]

【発明の実施の形態】図１を参照して本発明による密閉
型電池の安全装置の例を説明する。本例の安全装置は図
３の例と同様にリリーフ弁型であり、密閉型電池のケー
シング１１の円形の孔１１Ａに設けられた受圧部材２１
とＯリング３１と爪部材２５とを有する。BEST MODE FOR CARRYING OUT THE INVENTION An example of a safety device for a sealed battery according to the present invention will be described with reference to FIG. The safety device of the present example is a relief valve type like the example of FIG. 3, and the pressure receiving member 21 provided in the circular hole 11A of the casing 11 of the sealed battery.
And an O-ring 31 and a claw member 25.

【００２２】受圧部材２１は円板状部材２１Ａとその周
囲に延在する環状部材２１Ｃとを有し、斯かる環状部材
２１Ｃの内側に環状の支持部材２１Ｄが形成されてい
る。斯かる支持部材２１Ｄの上側環状面に爪部材２５が
装着されている。The pressure receiving member 21 has a disc-shaped member 21A and an annular member 21C extending around the disc-shaped member 21A, and an annular support member 21D is formed inside the annular member 21C. The claw member 25 is attached to the upper annular surface of the support member 21D.

【００２３】本例によると、ケーシング１１の孔１１Ａ
の周囲に沿って環状部材１３が形成されている。斯かる
環状部材１３は図示のように、受圧部材２１の環状の支
持部材２１Ｄの外側に且つそれに接触して配置されてい
る。According to this example, the hole 11A of the casing 11
An annular member 13 is formed along the circumference of the. Such an annular member 13 is arranged outside and in contact with the annular support member 21D of the pressure receiving member 21, as shown in the drawing.

【００２４】こうして、斯かるケーシング１１の環状部
材１３と受圧部材２１の環状部材２１Ｃの間にＯリング
３１が挿入されている。本例では、ケーシング１１の環
状部材１３の外側円周面１３ａと受圧部材２１の環状部
材２１Ｃの内側円周面２１ｄがシール面を形成してい
る。Thus, the O-ring 31 is inserted between the annular member 13 of the casing 11 and the annular member 21C of the pressure receiving member 21. In this example, the outer circumferential surface 13a of the annular member 13 of the casing 11 and the inner circumferential surface 21d of the annular member 21C of the pressure receiving member 21 form a sealing surface.

【００２５】即ち、環状部材１３の外側円周面１３ａと
環状部材２１Ｃの内側円周面２１ｄの間の間隔は、Ｏリ
ング３１の円形断面の外径より僅かに小さい寸法を有す
るように構成されている。従って、安全装置が組み立て
られた状態では、Ｏリング３１は両者によって半径方向
（中心軸線Ｏ−Ｏに垂直な方向）に圧縮変形している。That is, the distance between the outer circumferential surface 13a of the annular member 13 and the inner circumferential surface 21d of the annular member 21C is set to be slightly smaller than the outer diameter of the circular cross section of the O-ring 31. ing. Therefore, when the safety device is assembled, the O-ring 31 is compressed and deformed by both in the radial direction (direction perpendicular to the central axis OO).

【００２６】本例によると、シール圧ｐSLに起因する力
ＦSLは半径方向（中心軸線Ｏ−Ｏに垂直な方向）に作用
する。即ち、シール圧ｐSLに起因する力ＦSLは爪部材２
５に作用しない。従って、爪部材２５に作用する力Ｆは
密閉型電池の内圧ｐINに起因する力をＦINだけであり、
次のように表される。According to this example, the force F SL caused by the seal pressure p SL acts in the radial direction (direction perpendicular to the central axis O--O). That is, the force due to the sealing pressure p SL F SL claw member 2
No effect on 5. Therefore, the force F acting on the claw member 25 is only the force F IN caused by the internal pressure p IN of the sealed battery,
It is expressed as follows.

【００２７】[0027]

【数２】Ｆ＝ＦIN [Equation 2] F = F IN

【００２８】本例の安全装置では、爪部材２５に作用す
る力Ｆは密閉型電池の内圧ｐINに起因する力だけであ
り、従って、爪部材２５の強度を調節することによっ
て、密閉型電池の破壊圧、又は最大許容内圧ｐINの値を
設定することができる。即ち、爪部材２５の寸法又は材
質を選択することによって密閉型電池の破壊圧を変化さ
せることができる。In the safety device of this example, the force F acting on the claw member 25 is only the force caused by the internal pressure p IN of the sealed battery, and therefore, by adjusting the strength of the claw member 25, the sealed battery is adjusted. It is possible to set the value of the breaking pressure or the maximum allowable internal pressure p IN . That is, the breaking pressure of the sealed battery can be changed by selecting the size or material of the claw member 25.

【００２９】以上本発明の実施例について詳細に説明し
たが、本発明はこれらの例に限定されることなく特許請
求の範囲に記載された発明の範囲にて様々な変更等が可
能であることは当業者にとって理解されよう。Although the embodiments of the present invention have been described in detail above, the present invention is not limited to these examples, and various modifications can be made within the scope of the invention described in the claims. Will be understood by those skilled in the art.

【００３０】[0030]

【発明の効果】本発明の密閉型電池によると、爪部材２
５には密閉型電池の内圧に起因する力のみが作用するか
ら、爪部材２５の強度を調節することにによって開放圧
力を調節することができる利点を有する。According to the sealed battery of the present invention, the claw member 2
Since only the force resulting from the internal pressure of the sealed battery acts on 5, the opening pressure can be adjusted by adjusting the strength of the claw member 25.

【００３１】本発明の密閉型電池によると、開放圧力は
爪部材２５の強度を調節することにによって調節するこ
とができるから、安全装置のリリーフ圧を容易に且つ正
確に管理することができる利点を有する。According to the sealed battery of the present invention, since the opening pressure can be adjusted by adjusting the strength of the claw member 25, the relief pressure of the safety device can be easily and accurately controlled. Have.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明による密閉型電池の安全装置の構成を示
す図である。FIG. 1 is a diagram showing a configuration of a safety device for a sealed battery according to the present invention.

【図２】密閉型電池の外観を示す図である。FIG. 2 is a diagram showing an appearance of a sealed battery.

【図３】従来の密閉型電池の安全装置の構成例を示す図
である。FIG. 3 is a diagram showing a configuration example of a conventional safety device for a sealed battery.

【図４】安全装置の受圧部材の構成を示す図である。FIG. 4 is a diagram showing a configuration of a pressure receiving member of the safety device.

【図５】爪部材の構成例を示す図である。FIG. 5 is a diagram showing a configuration example of a claw member.

【符号の説明】[Explanation of symbols]

１１ ケーシング １１Ａ 孔 １１ａ 外面 １３ 環状部材 １３ａ 円周面 ２０ 安全装置 ２１ 受圧部材 ２１Ａ 円板状部材 ２１Ｂ、２１Ｃ 環状部材 ２１Ｄ 支持部材 ２１ａ 溝 ２１ｂ 底面 ２１ｄ 円周面 ２１Ｄ 支持部材 ２５ 爪部材 ３１ Ｏリング 11 Casing 11A Hole 11a Outer surface 13 Annular member 13a Circumferential surface 20 Safety device 21 Pressure receiving member 21A Disc-shaped member 21B, 21C Annular member 21D Support member 21a Groove 21b Bottom surface 21d Circular surface 21D Support member 25 Claw member 31 O-ring

Claims (6)

【特許請求の範囲】[Claims] 【請求項１】 電池のケーシングに形成された孔と該孔
を閉鎖する受圧部材と該受圧部材と上記ケーシングの間
に挿入されたＯリングと上記受圧部材を上記ケーシング
に接続する爪部材とを有し上記ケーシングの内圧が所定
の値を超えたとき上記爪部材が破断するように構成され
た安全装置を備えた密閉型電池において、 上記ケーシングの内圧の作用によって上記受圧部材が受
ける力の方向に対して、上記Ｏリングのシール圧の作用
によって上記受圧部材が受ける力の方向は垂直となるよ
うに構成されていることを特徴とする密閉型電池。1. A hole formed in a casing of a battery, a pressure receiving member closing the hole, an O-ring inserted between the pressure receiving member and the casing, and a claw member connecting the pressure receiving member to the casing. In a sealed battery having a safety device configured such that the pawl member is broken when the internal pressure of the casing exceeds a predetermined value, the direction of the force received by the pressure receiving member by the action of the internal pressure of the casing. On the other hand, the sealed battery is configured such that the direction of the force received by the pressure receiving member due to the action of the sealing pressure of the O-ring is vertical. 【請求項２】 請求項１記載の密閉型電池において、上
記受圧部材は円板状部材とその周囲に沿って延在する環
状部材とを有し、上記ケーシングの孔の周縁に沿って環
状部材が形成され、上記２つの環状部材の間をシールす
るように上記Ｏリングが配置されていることを特徴とす
る密閉型電池。2. The sealed battery according to claim 1, wherein the pressure receiving member has a disk-shaped member and an annular member extending along the circumference thereof, and the annular member extends along the peripheral edge of the hole of the casing. And the O-ring is arranged so as to seal between the two annular members. 【請求項３】 請求項１又は２記載の密閉型電池におい
て、上記爪部材は複数のＬ字形部材よりなり、上記ケー
シングの孔の周縁に沿って所定間隔にて配置されている
ことを特徴とする密閉型電池。3. The sealed battery according to claim 1, wherein the claw member is composed of a plurality of L-shaped members, and the claw members are arranged at predetermined intervals along the peripheral edge of the hole of the casing. Sealed type battery. 【請求項４】 密閉型電池のケーシングに形成された孔
と該孔を閉鎖する受圧部材と該受圧部材と上記ケーシン
グの間に挿入されたＯリングと上記受圧部材を上記ケー
シングに接続する爪部材とを有し、上記ケーシングの内
圧が所定の値を超えたとき上記爪部材が破断するように
構成された安全装置において、 上記ケーシンクの内圧の作用によって上記受圧部材が受
ける力の方向に対して、上記Ｏリングのシール圧の作用
によって上記受圧部材が受ける力の方向は垂直であるこ
とを特徴とする密閉型電池の安全装置。4. A hole formed in a casing of a sealed battery, a pressure receiving member closing the hole, an O-ring inserted between the pressure receiving member and the casing, and a claw member connecting the pressure receiving member to the casing. A safety device configured to break the pawl member when the internal pressure of the casing exceeds a predetermined value, in the direction of the force received by the pressure receiving member by the action of the internal pressure of the casing. The safety device for a sealed battery, wherein the direction of the force received by the pressure receiving member due to the action of the sealing pressure of the O-ring is vertical. 【請求項５】 請求項４記載の密閉型電池の安全装置に
おいて、上記受圧部材は円板状部材とその周囲に沿って
延在する環状部材とを有し、上記ケーシングの孔の周縁
に沿って環状部材が形成され、上記２つの環状部材の間
をシールするように上記Ｏリングが配置されていること
を特徴とする密閉型電池の安全装置。5. The safety device for a sealed battery according to claim 4, wherein the pressure receiving member has a disk-shaped member and an annular member extending along the periphery thereof, and the pressure receiving member extends along the peripheral edge of the hole of the casing. A safety device for a hermetically sealed battery, wherein an annular member is formed, and the O-ring is arranged so as to seal between the two annular members. 【請求項６】 請求項４又は５記載の密閉型電池の安全
装置において、上記爪部材は複数のＬ字形部材よりな
り、上記ケーシングの孔の周縁に沿って所定間隔にて配
置されていることを特徴とする密閉型電池の安全装置。6. The safety device for a sealed battery according to claim 4, wherein the claw member is composed of a plurality of L-shaped members, and the claw members are arranged at predetermined intervals along the periphery of the hole of the casing. Safety device for sealed batteries characterized by.
JP7210852A 1995-08-18 1995-08-18 Sealed battery and safety device thereof Pending JPH0963558A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7210852A JPH0963558A (en) 1995-08-18 1995-08-18 Sealed battery and safety device thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7210852A JPH0963558A (en) 1995-08-18 1995-08-18 Sealed battery and safety device thereof

Publications (1)

Publication Number Publication Date
JPH0963558A true JPH0963558A (en) 1997-03-07

Family

ID=16596178

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7210852A Pending JPH0963558A (en) 1995-08-18 1995-08-18 Sealed battery and safety device thereof

Country Status (1)

Country Link
JP (1) JPH0963558A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000216068A (en) * 1999-01-22 2000-08-04 Nec Corp Electrical double layer capacitor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000216068A (en) * 1999-01-22 2000-08-04 Nec Corp Electrical double layer capacitor

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