JPH11329402A - Circuit breaking part of battery - Google Patents
Circuit breaking part of batteryInfo
- Publication number
- JPH11329402A JPH11329402A JP10136361A JP13636198A JPH11329402A JP H11329402 A JPH11329402 A JP H11329402A JP 10136361 A JP10136361 A JP 10136361A JP 13636198 A JP13636198 A JP 13636198A JP H11329402 A JPH11329402 A JP H11329402A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- blocking member
- diaphragm
- breaking
- support members
- 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.)
- Withdrawn
Links
Classifications
-
- 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
- Gas Exhaust Devices For Batteries (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は電池の電路遮断部品
に係わり、電池ケースの内部の圧力が上昇したときに安
全性を確保するために用いられる電池の電路遮断部品に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circuit blocker for a battery, and more particularly to a circuit blocker for a battery used to ensure safety when the pressure inside a battery case increases.
【０００２】[0002]
【従来の技術】従来、例えば電池ケースの内部に有機溶
媒系電解液を注入して密閉したリチウムイオン二次電池
などが、携帯電話機やノートパソコン等の携帯用機器の
電源として広く使用されている。ところが、このような
電池に再充電するときに過充電を行ったり、規定された
電流よりも大きな電流で充電を行ったりすると、電池に
異常が生じて電池内に気体が発生し、電池内の圧力や温
度が上昇して、電池の膨張、さらには電池ケースに亀裂
等が発生し、内部の電解液が外部ににじみ出して、電池
が組み込まれた機器に悪影響を与えることがあった。ま
た、これに至らなくてとも、前述したような異常状態の
ままで、電池の使用を継続すると、電池の膨張が進行
し、電池ケースが破裂したりする危険性があり、異常が
生じた電池は速やかに使用を中止する必要があった。2. Description of the Related Art Conventionally, for example, a lithium ion secondary battery in which an organic solvent-based electrolytic solution is injected into a battery case and hermetically sealed is widely used as a power source for portable devices such as mobile phones and notebook computers. . However, when overcharging or recharging such a battery with a current larger than the specified current, an abnormality occurs in the battery and gas is generated in the battery. When the pressure or temperature rises, the battery expands, and a crack or the like is generated in the battery case, so that the internal electrolytic solution oozes out to adversely affect equipment in which the battery is incorporated. Also, even if this does not occur, if the use of the battery is continued in the abnormal state as described above, the battery may expand and the battery case may be ruptured. Had to be discontinued immediately.
【０００３】そのために、前述したような電池において
は、電池内部の気圧が異常に上昇すると、内部の電流回
路を遮断して、電池内部の気圧の上昇をストップさせ、
電池の爆発等の障害を事前に防止するための図１１、１
２に示すようなダイヤフラム部２２を有する電池の電路
遮断部品Ａが提案されている。このような電池の電路遮
断部品Ａは、電池ケース（図示せず）の内部を気密に遮
蔽する電池蓋２１が配設され、この電池蓋２１の一部に
ダイヤフラム部２２が一体形成されている。このダイヤ
フラム部２２は、電池蓋２１の一部を薄肉の円環状に形
成した連結部２２ａを有し、この連結部２２ａが図示下
方に膨出形成されている。また、連結部２２ａの中央部
には上方に突出形成された凸部２２ｂが形成されてい
る。[0003] Therefore, in the above-described battery, when the pressure inside the battery rises abnormally, the internal current circuit is shut off, and the rise in the pressure inside the battery is stopped.
FIG. 11 and FIG. 1 for preventing obstacles such as battery explosion in advance.
An electric circuit interrupting component A for a battery having a diaphragm portion 22 as shown in FIG. In such a circuit blocker A for a battery, a battery cover 21 for hermetically shielding the inside of a battery case (not shown) is provided, and a diaphragm portion 22 is formed integrally with a part of the battery cover 21. . The diaphragm portion 22 has a connecting portion 22a in which a part of the battery lid 21 is formed in a thin annular shape, and the connecting portion 22a is formed to bulge downward in the figure. A convex portion 22b is formed at the center of the connecting portion 22a so as to protrude upward.
【０００４】前記ダイヤフラム部２２の上方には、セラ
ミックス材料等から成る遮断部材２３が配設され、この
遮断部材２３の表面には導電性の導電路２３ａが形成さ
れている。また、遮断部材２３は両端部が、金属板から
成る支持部材２４の支持部２４ａに支持されて取り付け
られている。そして、一方の支持部材２４は電池内部の
発電素子に接続され、他方の支持部材２４は電池外部の
外部電極に接続されて、発電素子と外部電極の間に遮断
部材２３を介して電路が形成されている。A blocking member 23 made of a ceramic material or the like is disposed above the diaphragm portion 22, and a conductive path 23a is formed on the surface of the blocking member 23. Both ends of the blocking member 23 are supported by and supported by a support portion 24a of a support member 24 made of a metal plate. One support member 24 is connected to a power generation element inside the battery, and the other support member 24 is connected to an external electrode outside the battery, and an electric path is formed between the power generation element and the external electrode via a blocking member 23. Have been.
【０００５】このような従来の電池の電路遮断部品Ａを
用いた電池の内部に異常が生じて、電池内部の気体の圧
力が上昇すると、図１２に示すようにダイヤフラム部２
２に矢印Ｂの圧力が加わり、ダイヤフラム部２２が遮断
部材２３側に一気に反転し、凸部２２ｂが遮断部材２３
の中央部付近に衝突し、遮断部材２３が中央部付近から
破断し、遮断部材２３が左右２つ分割され、２つの遮断
部材間に隙間Ｃが形成されて導電路２３ａが切断され
る。この導電路２３ａを切断することで、電池内部の電
路を遮断し、電池内部の電流の流れをストップさせるこ
とで、電池の内部圧力の上昇を停止させることができ
る。When an abnormality occurs in a battery using such a conventional battery circuit interrupting component A and the pressure of the gas inside the battery rises, as shown in FIG.
2, the diaphragm portion 22 is immediately turned to the blocking member 23 side, and the convex portion 22b is moved to the blocking member 23.
, The breaking member 23 breaks from the vicinity of the center portion, the blocking member 23 is divided into two right and left parts, a gap C is formed between the two blocking members, and the conductive path 23a is cut. By cutting the conductive path 23a, the electric path inside the battery is cut off, and the flow of current inside the battery is stopped, whereby the rise in the internal pressure of the battery can be stopped.
【０００６】[0006]
【発明が解決しようとする課題】しかし前述のような従
来の電池の電路遮断部品を装着した電池を使用した最近
の携帯用機器は小型化されたものが多くなり、電池の電
路遮断部品も小型になってダイヤフラム部２２が小さく
なり、ダイヤフラム部２２の変位量も小さくせざるを得
なくなっていた。このようなダイヤフラム部２２の変位
量が小さいと、ダイヤフラム部２２が変位して遮断部材
２３を破断しても、破断後の左右に分割された破断部材
２３間の隙間Ｃを大きくすることができず、切断後の導
電路２３ａが接触して再度導通するというような危険性
があった。また、隙間Ｃが小さいために、内部の電路が
遮断され電池の内圧が変化して、ダイヤフラム２２部が
若干下方に変位したりすると、隙間Ｃがせばまり破断後
の導電路２３ａが接触して再度導通するというような危
険性があった。本発明は、前述したような従来の課題を
解決して、破断された遮断部材７の導電路２３ａが再度
導通することのない、安全性の高い電池の電路遮断部品
を提供することを目的とする。However, many of recent portable devices using a battery equipped with the above-described conventional battery circuit interruption parts have been downsized, and the battery circuit interruption parts have also been reduced in size. As a result, the diaphragm portion 22 becomes smaller, and the displacement amount of the diaphragm portion 22 must be reduced. When the amount of displacement of the diaphragm portion 22 is small, even if the diaphragm portion 22 is displaced and the blocking member 23 is broken, the gap C between the left and right divided breaking members 23 after the breaking can be increased. However, there is a risk that the cut conductive path 23a comes into contact and conducts again. In addition, when the gap C is small, the internal electric circuit is interrupted, the internal pressure of the battery changes, and when the diaphragm 22 is displaced slightly downward, the gap C is narrowed and the broken conductive path 23a comes into contact. There is a danger that conduction will occur again. An object of the present invention is to solve the above-described conventional problems and to provide a highly safe battery circuit disconnection component in which the broken conductive path 23a of the blocking member 7 does not conduct again. I do.
【０００７】[0007]
【課題を解決するための手段】前記課題を解決するため
の第１の解決手段として本発明の電池の電路遮断手段
は、 発電素子を収納した電池ケースと、この電池ケー
スの内部を気密に遮蔽する電池蓋と、この電池蓋の一部
を薄肉にした連結部を前記電池ケースの内方に向けて膨
出形成したダイヤフラム部と、このダイヤフラム部の上
方に配設され、導電路が形成され、一部を細幅あるいは
薄肉に形成した破断可能な応力集中部を有する遮断部材
とを備え、前記ダイヤフラム部の前記連結部の中央部付
近に前記遮断部材側に突出する凸部を設け、この凸部と
前記遮断部材の前記応力集中部との位置を互いにずらし
て配設した構成とした。Means for Solving the Problems As a first means for solving the above-mentioned problems, an electric circuit interrupting means for a battery according to the present invention comprises: a battery case accommodating a power generating element; A battery lid, a diaphragm part formed by bulging a connection part obtained by partially thinning the battery lid toward the inside of the battery case, and a conductive path formed above the diaphragm part. And a blocking member having a breakable stress concentration portion formed in part of a narrow width or a thin wall, and a convex portion protruding toward the blocking member near the center of the connecting portion of the diaphragm portion. The configuration is such that the positions of the convex portion and the stress concentration portion of the blocking member are shifted from each other.
【０００８】また、前記課題を解決するための第２の解
決手段として、前記遮断部材は両端部がそれぞれ第１、
第２支持部材に両持ち支持され、この第１、第２支持部
材にはそれぞれが上方と下方の異なる方向に変位可能な
内部応力を備えた構成とした。As a second means for solving the above-mentioned problem, both ends of the blocking member are first and second, respectively.
The first and second support members are supported at both ends by a second support member, and each of the first and second support members has an internal stress capable of being displaced in different directions of upward and downward.
【０００９】また、前記課題を解決するための第３の解
決手段として、前記遮断部材は両端部が破断の際の変位
で塑性変形可能な金属から成る第１、第２支持部材で両
持ち支持されている構成とした。As a third means for solving the above-mentioned problems, the blocking member is supported at both ends by first and second support members made of a metal which can be plastically deformed by displacement at the time of breaking. Configuration.
【００１０】また、前記課題を解決するための第４の解
決手段として、発電素子を収納した電池ケースと、この
電池ケースの内部を気密に遮蔽する電池蓋と、この電池
蓋の一部を薄肉にした連結部を前記電池ケースの内方に
向けて膨出形成したダイヤフラム部と、このダイヤフラ
ム部の上方に配設され、導電路が形成されて一部に細幅
部あるいは薄肉部から成る遮断部材と、この遮断部材の
両端部を両持ち支持する第１、第２支持部材とを備え、
前記ダイヤフラム部の前記連結部の中央部付近に前記遮
断部材側に突出する凸部を設け、前記第１、第２支持部
材の少なくとも一方には上方に変位可能な内部応力を有
し、前記電池ケースの内圧が所定値以上に上昇すると前
記ダイヤフラム部が変位し、前記凸部が前記遮断部材を
押圧して前記応力集中部から破断し、前記内部応力を有
する前記第１、第２支持部材の少なくとも一方を上向き
に変位させるようにした構成とした。As a fourth means for solving the above-mentioned problems, a battery case accommodating a power generating element, a battery cover for hermetically shielding the inside of the battery case, and a thin part of the battery cover are provided. A diaphragm portion having a connecting portion formed to bulge toward the inside of the battery case, and a cut-off portion provided above the diaphragm portion and having a conductive path formed and partially having a narrow portion or a thin portion. A member, first and second support members for supporting both ends of the blocking member at both ends,
A protrusion protruding toward the blocking member is provided near the center of the connecting portion of the diaphragm, and at least one of the first and second support members has an internal stress capable of being displaced upward, and the battery When the internal pressure of the case rises above a predetermined value, the diaphragm portion is displaced, the convex portion presses the blocking member and breaks from the stress concentration portion, and the first and second supporting members having the internal stress have the internal stress. At least one was configured to be displaced upward.
【００１１】[0011]
【発明の実施の形態】以下に、本発明の電池の電路遮断
部品の実施の形態について説明する。図１は本発明の電
池の電路遮断部品の形態の断面正面図、図２は本発明の
電池の電路遮断部品の分解斜視図、図３は本発明の電池
の電路遮断部品の第１の実施の形態のダイヤフラム部の
部分拡大断面斜視図、図４は本発明の電池の電路遮断部
品の第１の実施の形態のダイヤフラム部の部分拡大断面
図、図５は本発明の電池の電路遮断部品の第１の実施の
形態のダイヤフラム部の動作を説明する図、図６は本発
明の電池の電路遮断部品の第２の形態を説明する図、図
７は本発明の電池の電路遮断部品の第２の実施の形態を
説明する図、図８は本発明の電池の電路遮断部品の第２
の実施の形態を説明する図、図９は本発明の電池の電路
遮断部品の第２の実施の形態を説明する図、図１０は遮
断部材のその他の形状を説明する図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the electric circuit breaker for a battery according to the present invention will be described below. FIG. 1 is a cross-sectional front view of a form of a circuit breaker of the battery of the present invention, FIG. 2 is an exploded perspective view of the circuit breaker of the battery of the present invention, and FIG. 3 is a first embodiment of a circuit breaker of the battery of the present invention. FIG. 4 is a partially enlarged cross-sectional perspective view of the diaphragm portion of the embodiment of FIG. 4, FIG. 4 is a partially enlarged cross-sectional view of the diaphragm portion of the battery according to the first embodiment of the present invention, and FIG. FIG. 6 is a view for explaining the operation of the diaphragm unit according to the first embodiment of the present invention, FIG. 6 is a view for explaining a second embodiment of the electric circuit interrupting component of the battery of the present invention, and FIG. FIG. 8 is a diagram for explaining a second embodiment, and FIG.
FIG. 9 is a diagram illustrating a second embodiment of an electric circuit breaker for a battery according to the present invention, and FIG. 10 is a diagram illustrating another shape of a breaking member.
【００１２】本発明の電池の電路遮断部品Ｔは図２に示
すように、全体形状が略矩形に形成され、端子部２と、
絶縁体３と、ダイヤフラム部Ｄと安全弁部Ｚとを有する
電池蓋（負ケース）４と、保持体５、外部電極６、遮断
部材７、リベット８、とから主に構成されている。この
ような構成の電池の電路遮断部品Ｔは、図１に示すよう
に電池蓋４の周囲の鍔部４ｊが電池ケースＫに溶接等で
取り付けられて、電池ケースＫの内部が気密に遮蔽され
るようになっている。端子部２はアルミニウム製で、図
２に示すように略直角に折り曲げられており、その長手
方向の一端部にはリベット８の接続部８ｄと溶接される
接続片部２ａが延設されている。また、平坦部２ｂには
略円形の開口部２ｃが複数個形成されている。As shown in FIG. 2, the circuit breaker T for a battery according to the present invention has a substantially rectangular overall shape.
It mainly comprises an insulator 3, a battery lid (negative case) 4 having a diaphragm D and a safety valve Z, a holder 5, an external electrode 6, a blocking member 7, and a rivet 8. As shown in FIG. 1, the circuit breaker T for a battery having such a configuration has a flange 4 j around the battery lid 4 attached to the battery case K by welding or the like, so that the inside of the battery case K is airtightly shielded. It has become so. The terminal portion 2 is made of aluminum and is bent at a substantially right angle as shown in FIG. 2, and a connecting piece portion 2 a to be welded to the connecting portion 8 d of the rivet 8 extends at one end portion in the longitudinal direction. . A plurality of substantially circular openings 2c are formed in the flat portion 2b.
【００１３】絶縁体３はＰＰ等の樹脂材料から成り、一
端寄りにリベット８を貫挿する円筒部３ａと、電池蓋４
のダイヤフラム部Ｄを図示下方側に膨出し得るようにし
た凹部３ｂと、この凹部３ｂの底面に貫通形成された通
気孔３ｃ、３ｃと、溶接用の孔３ｄと、電池蓋４の安全
弁部Ｚに連通させる略長方形の開口３ｅ、３ｅと位置決
め用の突起部３ｆとから構成されている。電池蓋４はス
テンレス材のような導電性金属板から成り、図２に示す
ように、外形が略矩形の弁当箱状に形成され、外周部に
略矩形の鍔部４ｊと、この鍔部４ｊの内側を絞り加工等
で下方に突出させて平坦状の底板４ａが形成されてい
る。The insulator 3 is made of a resin material such as PP, and has a cylindrical portion 3a through which a rivet 8 is inserted near one end, and a battery cover 4
3b that allows the diaphragm portion D to swell downward in the figure, vent holes 3c and 3c formed through the bottom surface of the concave portion 3b, holes 3d for welding, and a safety valve portion Z of the battery lid 4. Are formed with substantially rectangular openings 3e and 3e communicating with the projections, and positioning projections 3f. The battery cover 4 is made of a conductive metal plate such as a stainless steel material, and as shown in FIG. 2, is formed in a substantially rectangular lunch box shape, and has a substantially rectangular flange portion 4j on an outer peripheral portion, and the flange portion 4j. Is formed so as to project downward by drawing or the like to form a flat bottom plate 4a.
【００１４】この底板４ａの周囲には、鍔部４ｊと底板
４ａとを連結する突条部４ｂが形成されている。前記底
板４ａの一端寄りにはリベット８を挿通した円筒部３ａ
を貫通する孔部４ｃが形成されている。この孔部４ｃの
図示右隣りには、ダイヤフラム部Ｄが形成されている。
このダイヤフラム部Ｄは底板４ａの裏面の一部を、外周
部を円環状に凹ませた凹部４ｋが形成され、この凹部４
ｋの底面を薄肉にした連結部４ｄが形成されている。ま
た、この連結部４ｄの中央部付近には、図示上方の遮断
部材７側に突出する凸部４ｅが形成されている。A ridge 4b is formed around the bottom plate 4a to connect the flange 4j and the bottom plate 4a. Near one end of the bottom plate 4a, a cylindrical portion 3a through which a rivet 8 is inserted.
Is formed. A diaphragm D is formed on the right side of the hole 4c in the drawing.
The diaphragm portion D is formed with a concave portion 4k in which a part of the back surface of the bottom plate 4a is annularly concave in the outer peripheral portion.
A connecting portion 4d having a thin bottom surface of k is formed. In the vicinity of the central portion of the connecting portion 4d, a convex portion 4e protruding toward the blocking member 7 in the upper part of the figure is formed.
【００１５】ダイヤグラム部Ｄは、中央部の凸部を上方
の遮断部材７から遠ざける方向に連結部４ｄを図示下方
に椀状に膨出形成している。また、図２に示す電池蓋４
の他端寄りの底板４ａには、安全弁部Ｚが形成されてい
る。この安全弁部Ｚは、底板４ａの一部に、外形が円環
状で図示上方に突出する突出部４ｆと、この突出部４ｆ
の根元部分に形成されて電池蓋４と突出部４ｆとを連結
する連結部４ｇとから成り、この連結部４ｇは突出部４
ｆより薄肉に形成され、連結部４ｇの上方から見た形状
は円環状に形成されている。In the diagram D, a connecting portion 4d is formed to protrude downward in the figure in a bowl shape in a direction in which a central convex portion is moved away from the upper blocking member 7. Also, the battery cover 4 shown in FIG.
A safety valve portion Z is formed on the bottom plate 4a near the other end. The safety valve portion Z includes, on a part of the bottom plate 4a, a protrusion 4f having an annular outer shape and protruding upward in the drawing, and a protrusion 4f
And a connecting portion 4g formed at the root portion of the connecting portion and connecting the battery lid 4 and the protruding portion 4f.
It is formed to be thinner than f, and the shape viewed from above the connecting portion 4g is formed in an annular shape.
【００１６】このような安全弁部Ｚは、突出部４ｆの突
出方向を、電池の内部を気密に遮蔽する電池蓋４の外部
に突出して、電池に異常が発生して電池内部の圧力が異
常に上昇し、この電池内圧が所定位置以上に上昇する
と、薄肉に形成された連結部４ｇが破断するようになっ
ている。この連結部４ｇの破断部分から電池内部の高圧
の気体が外部に排出されて、電池の爆発を事前に防止す
るようになっている。また、電池蓋４の他端側で底板４
ａの隅部には突条部４ｂの一部を内側に突出させた位置
決め用の突起部４ｈが形成され、突条部４ｂの上端の外
周側には外方に延出する鍔部４ｊが形成されて電池蓋４
が構成されている。In such a safety valve portion Z, the projecting direction of the projecting portion 4f projects to the outside of the battery cover 4 which hermetically shields the inside of the battery. When the battery pressure rises and the internal pressure of the battery rises above a predetermined position, the thin connecting portion 4g is broken. The high-pressure gas inside the battery is discharged to the outside from the broken portion of the connecting portion 4g, thereby preventing the battery from exploding in advance. Also, the bottom plate 4 is connected to the other end of the battery cover 4.
Formed at the corner of a is a projection 4h for positioning, which is formed by projecting a part of the ridge 4b inward, and a flange 4j extending outward on the outer peripheral side of the upper end of the ridge 4b. Formed battery lid 4
Is configured.
【００１７】また、保持体５はＰＰＳ等の樹脂材料で成
形され、図１に示すように電池蓋４の突条部４ｂ内に嵌
合される大きさになっている。保持体５の一端寄りに
は、リベット８を挿通した円筒部３ａを貫通する貫通孔
５ａと、この貫通孔５ａのまわりの凹部に設けられて、
リベット８を接続するリベット接続部９ａと、一対の遮
断部材７を支持する第１、第２支持部材９ｂ、９ｃをそ
れぞれ延出する開口部５ｂ、５ｂと、外部電極６を保持
する台座部５ｃと、外部電極６の接続部６ｃと接続され
る電極接続部９ｄと、電池蓋４と溶接される固定部９ｅ
と、安全弁部Ｚに対応した位置に形成された開口５ｄ
と、電池蓋４の位置決め用の突起部４ｈが嵌合される切
欠き部５ｅとが設けられている。The holder 5 is formed of a resin material such as PPS, and has a size to be fitted into the ridge 4b of the battery cover 4 as shown in FIG. Near one end of the holder 5, a through hole 5a penetrating the cylindrical portion 3a through which the rivet 8 is inserted, and a recess around the through hole 5a are provided.
A rivet connection portion 9a for connecting the rivet 8, openings 5b and 5b for extending the first and second support members 9b and 9c for supporting the pair of blocking members 7, respectively, and a pedestal portion 5c for holding the external electrode 6. An electrode connection portion 9d connected to the connection portion 6c of the external electrode 6, and a fixing portion 9e welded to the battery cover 4.
And an opening 5d formed at a position corresponding to the safety valve portion Z
And a notch 5e into which the positioning protrusion 4h of the battery lid 4 is fitted.
【００１８】このような保持体５には、ニッケル等の金
属板から成るリード９の、リベット接続部９ａ、第１、
第２支持部材９ｂ、９ｃ、電極接続部９ｄ、固定部９ｅ
等が、インサート成形等により一体化されている。前記
保持体５には電極接続部９ｄの下面を露出させる孔部５
ｆが形成され、この孔部５ｆに溶接具を通して保持体５
の電極接続部９ｄに当て、上方から溶接具を外部電極６
の接続部６ｃに当てて挟み込んでスポット溶接を行っ
て、外部電極６を保持体５に固定すると共に第２支持部
材９ｃに電気的に接続させている。A rivet connecting portion 9a of the lead 9 made of a metal plate such as nickel
Second support members 9b, 9c, electrode connection portion 9d, fixing portion 9e
Are integrated by insert molding or the like. The holder 5 has a hole 5 for exposing the lower surface of the electrode connecting portion 9d.
f is formed, and the holder 5 is passed through a welding tool through the hole 5f.
Of the external electrode 6 from above.
The outer electrode 6 is fixed to the holder 5 and electrically connected to the second support member 9c by performing spot welding by being sandwiched between the connecting portions 6c.
【００１９】前記リベット接続部９ａと第１支持部材９
ｂとは接続されており、第１支持部材９ｂは遮断部材７
の導電路７ｂを介して第２支持部材９ｃと電気的に接続
されて外部電極６に接続されている。一方、固定部９ｅ
は独立しており、他と電気的に接続されていない。そし
て、保持体５は固定部９ｅと、その下面に配設された電
池蓋４の底板４ａにスポット溶接等により固着されてい
る。The rivet connection portion 9a and the first support member 9
b, and the first support member 9b is connected to the blocking member 7
Is electrically connected to the second support member 9c through the conductive path 7b, and is connected to the external electrode 6. On the other hand, the fixing part 9e
Is independent and not electrically connected to others. The holder 5 is fixed to the fixing portion 9e and the bottom plate 4a of the battery cover 4 provided on the lower surface thereof by spot welding or the like.
【００２０】また、外部電極６は鉄板等の金属板にニッ
ケルメッキが施され、外形が略矩形の電極部６ａと、こ
の電極部６ａの両側縁から下方に折り曲げられた脚部６
ｂ、６ｂと、保持体５の電極接続部９ｅと接続される接
続部６ｃとが設けられている。 そして、外部電極６
は、電池の電路遮断部品Ｔを電池ケースＫに組み込んだ
とき、電池の正極となるものである。また、遮断部材７
はセラミックス等の脆い絶縁性材料から成り、図２に示
すように略帯状で、遮断部材７の一部を両端部より細幅
に形成した破断可能な応力集中部７ａを有している。こ
の遮断部材７の上面側には、導電性部材を印刷、または
金属箔を粘着等で形成した導電路７ｂが設けられてい
る。The external electrode 6 is made of a metal plate such as an iron plate and plated with nickel, and has an electrode portion 6a having a substantially rectangular outer shape, and leg portions 6 bent downward from both side edges of the electrode portion 6a.
b, 6b, and a connection portion 6c connected to the electrode connection portion 9e of the holder 5 are provided. And the external electrode 6
Is a positive electrode of the battery when the circuit breaker T for the battery is assembled in the battery case K. In addition, the blocking member 7
Is made of a brittle insulating material such as ceramics, and has a substantially strip shape as shown in FIG. 2, and has a breakable stress concentration portion 7a in which a part of the blocking member 7 is formed narrower than both ends. On the upper surface side of the blocking member 7, a conductive path 7b formed by printing a conductive member or forming a metal foil by adhesion or the like is provided.
【００２１】前記破断可能な応力集中部７ａは、図１０
に示すような、遮断部材７の一部の板厚をへこませて薄
肉にしたものでもよい前記遮断部材７は両端部の幅広の
導電路７ｂが保持体５の第１、第２支持部材９ｂ、９ｃ
に半田付け等により両持ち支持されて、第１、第２支持
部材９ｂ、９ｃ間に電路が形成されて取り付けられてい
る。そのために遮断部材７は、遮断部材７の板厚方向に
圧力が加わると、応力集中部７ａから破断されて導電路
７ｂが切断され、第１、第２支持部材９ｂ、９ｃ間の電
路が遮断されるようになっている。The rupturable stress concentration portion 7a is shown in FIG.
The blocking member 7 may be formed by reducing the thickness of a part of the blocking member 7 so as to be thin. The wide conductive paths 7b at both ends of the blocking member 7 are first and second support members of the holder 5. 9b, 9c
Are supported at both ends by soldering or the like, and an electric path is formed and attached between the first and second support members 9b and 9c. Therefore, when pressure is applied in the thickness direction of the blocking member 7, the blocking member 7 is broken from the stress concentration portion 7 a and the conductive path 7 b is cut, and the electric path between the first and second support members 9 b and 9 c is cut off. It is supposed to be.
【００２２】また、リベット８はアルミ製で、図２に示
すように、先端側をやや細くした円柱部８ａと、下端に
設けられた鍔部８ｂと、鍔部８ｂの外周に沿って上方に
突設された環状突条部８ｃと、鍔部８ｂから横方向に突
設された接続部８ｄとから成り、この接続部８ｄには前
記端子部２の接続片部２ａが溶着されるようになってい
る。また、絶縁体３、電池蓋４、および保持体５は、リ
ベット８の円柱部８ａの先端がカシメられて一体化さ
れ、このカシメ部分が保持体５のリベット接続部９ａに
接続されている。従って、外部電極６は遮断部材７の導
電路７ｂ等を経て端子部２と電気的に接続されている。
前述したような本発明の電池の電路遮断部品Ｔの第１の
実施の形態においては、図３、４に示すように、ダイヤ
フラム部Ｄの中心線Ｅ上にある凸部４ｅが、遮断部材７
の中心線Ｆ上にある応力集中部７ａから寸法Ｇだけズレ
た位置の電池蓋４の一部に形成されている。即ち、凸部
４ｅと応力集中部７ａとの位置を互いにずらして、ダイ
ヤフラム部Ｄと遮断部材７とが配設されている。The rivet 8 is made of aluminum, and as shown in FIG. 2, a cylindrical portion 8a having a slightly thinner tip end, a flange 8b provided at the lower end, and an upper portion extending along the outer periphery of the flange 8b. An annular ridge 8c protrudes and a connecting portion 8d protruding laterally from the flange 8b. The connecting piece 8a of the terminal portion 2 is welded to the connecting portion 8d. Has become. The insulator 3, the battery cover 4, and the holder 5 are integrated by caulking the tip of the cylindrical portion 8a of the rivet 8, and this caulked portion is connected to the rivet connection portion 9a of the holder 5. Therefore, the external electrode 6 is electrically connected to the terminal 2 via the conductive path 7b of the blocking member 7 and the like.
In the first embodiment of the circuit breaker T for a battery according to the present invention as described above, as shown in FIGS. 3 and 4, the projection 4 e on the center line E of the diaphragm D is provided with the blocking member 7.
Is formed on a part of the battery cover 4 at a position displaced from the stress concentration portion 7a on the center line F by a dimension G. That is, the diaphragm portion D and the blocking member 7 are arranged with the positions of the convex portion 4e and the stress concentration portion 7a shifted from each other.
【００２３】前述したような本発明の電池の電路遮断部
品Ｔを、例えばリチウムイオン２次電池等から成る電池
（図示せず）に用いたもので説明すると、図１に示すよ
うに開放された電池ケースＫの上方から、本発明の電池
の電路遮断部品Ｔを挿入し、電池蓋４の鍔部４ｊをケー
スの嵌合部全周に亘って溶接等で接続し、電池ケースＫ
の側面に設けられた電解液注入孔（図示せず）から電解
液を注入した後、当該注入孔溶接等で塞ぐことで、電池
ケースＫの内部が密閉される。If the above-described circuit breaker T of the battery of the present invention is used for a battery (not shown) made of, for example, a lithium ion secondary battery or the like, it is opened as shown in FIG. From above the battery case K, the circuit breaker T for the battery of the present invention is inserted, and the flange 4j of the battery cover 4 is connected by welding or the like all around the fitting portion of the case.
After the electrolyte is injected from an electrolyte injection hole (not shown) provided on the side surface of the battery case K, the inside of the battery case K is sealed by closing the injection hole by welding or the like.
【００２４】また、本発明の電池の電路遮断部品Ｔを用
いた電池を充電するときの電流の経路は、外部電極（正
極）６から順次、第２支持部材９ｃ、遮断部材７の導電
路７ｂ、第１支持部材９ｂ、リベット８、端子部２を経
て、電池内部の発電素子（図示せず）に導出される。こ
のような電池（図示せず）に、過充電が行われたり、規
定された電流よりも大きな電流で充電が行われたりする
と、電池内部に異常が発生し電池内部の圧力や温度が異
常に上昇する。The current path when charging the battery using the battery circuit breaker T of the present invention is, in order from the external electrode (positive electrode) 6, the second support member 9 c and the conductive path 7 b of the breaker 7. , Through the first support member 9b, the rivet 8, and the terminal portion 2, and is led out to a power generating element (not shown) inside the battery. If such a battery (not shown) is overcharged or charged with a current larger than a specified current, an abnormality occurs inside the battery, and the pressure and temperature inside the battery become abnormal. Rise.
【００２５】すると、本発明の電池の電路遮断部品Ｔに
電池内部の上昇した内圧が伝わり、この上昇した電池内
圧が、絶縁体３の通気孔３ｃ、３ｃを介してダイヤフラ
ム部Ｄと、開口３ｅ、３ｅを介して安全弁部Ｚとに伝わ
る。そして、電池内圧が所定の圧力に達すると、ダイヤ
フラム部Ｄは薄肉形成された連結部４ｄが、図５に示す
ように一気に上方に反転する。この連結部４ｄの一気の
反転で、上方の遮断部材７の応力集中部７ａからズレた
位置の凸部４ｅが遮断部材７の下面に衝突し、遮断部材
７が応力集中部７ａの中央部付近から破断される。Then, the increased internal pressure inside the battery is transmitted to the circuit breaker T of the battery of the present invention, and the increased internal pressure of the battery is transmitted through the ventilation holes 3c, 3c of the insulator 3 to the diaphragm portion D and the opening 3e. And 3e to the safety valve portion Z. Then, when the battery internal pressure reaches a predetermined pressure, the connecting portion 4d of the diaphragm portion D, which is formed to be thin, is flipped upward at a stretch as shown in FIG. Due to the sudden reversal of the connecting portion 4d, the convex portion 4e at a position displaced from the stress concentration portion 7a of the upper blocking member 7 collides with the lower surface of the blocking member 7, and the blocking member 7 is positioned near the center of the stress concentration portion 7a. To be broken.
【００２６】この遮断部材７の破断により導電路７ｂが
切断され、リード９の第１、第２支持部材９ｂ、９ｃ間
の電路が遮断される。このとき、破断後の遮断部材７
は、図５に示す左側の第１支持部材９ｂに支持された遮
断部材７が凸部４ｅに押し上げられて上向きに傾斜した
状態になり、図示右側の第２支持部材９ｃに支持された
遮断部材７は略水平状態になり、破断後の左右の遮断部
材７間に大きな段差Ｈが形成される。そのために、切断
された左右の導電路７ｂが大きくはなされて、再度導通
するというようなことはない。このように、遮断部材７
の破断によって、第１、第２支持部材９ｂ、９ｃ間の電
路が遮断されると共に、外部電極６と電池内の発電素子
（図示せず）間の電路が遮断され、電池への充電が停止
される。それにより、電池内部の圧力上昇が抑えられ、
電池の破裂等による障害を未然に防止することができ
る。The breaking of the blocking member 7 cuts the conductive path 7b and cuts off the electrical path between the first and second support members 9b and 9c of the lead 9. At this time, the breaking member 7 after the fracture
Is a state in which the blocking member 7 supported by the first support member 9b on the left side shown in FIG. 5 is pushed up by the convex portion 4e to be in an upwardly inclined state, and the blocking member supported by the second support member 9c on the right side in the drawing. 7 is substantially horizontal, and a large step H is formed between the left and right blocking members 7 after the fracture. Therefore, there is no possibility that the cut left and right conductive paths 7b are made large and conductive again. Thus, the blocking member 7
As a result, the electric path between the first and second support members 9b and 9c is cut off, and the electric path between the external electrode 6 and a power generating element (not shown) in the battery is cut off, so that charging of the battery is stopped. Is done. This suppresses the pressure rise inside the battery,
Failures such as rupture of the battery can be prevented beforehand.
【００２７】また、もしも前記遮断部材７を破断して電
路を遮断しても、電池内部の電解液の影響等で電池内圧
が更に上昇するような場合には、電池蓋４の安全弁部Ｚ
の薄肉に形成されている連結部４ｇを破断して、この破
断部分から電池内の高圧力の気体を開口５ｄを経由し
て、電池の外部に排出することができ、本発明の電池の
電路遮断部品は二重の安全対策がなされている。そし
て、例えば本発明の電池の電路遮断部品Ｔの動作圧力
は、４〜１０気圧の範囲でダイヤフラム４ｄが一気に反
転して動作し、１０〜２０気圧の範囲で安全弁部Ｚの連
結部４ｇが破断されるように設定されている。If the internal pressure of the battery further increases due to the effect of the electrolyte inside the battery even if the electric circuit is cut off by breaking the blocking member 7, the safety valve portion Z of the battery lid 4 will be described.
The thin connection portion 4g is broken, and the high-pressure gas in the battery can be discharged from the broken portion to the outside of the battery through the opening 5d. The shut-off component has double safety measures. Then, for example, the operating pressure of the circuit interrupting component T of the battery of the present invention is such that the diaphragm 4d operates at a stroke in the range of 4 to 10 atm, and the connecting portion 4g of the safety valve portion Z is broken in the range of 10 to 20 atm. It is set to be.
【００２８】また、本発明の第１の実施の形態の変形例
として、例えば第１支持部材９ｂには上方に変位可能な
内部応力を備え、第２支持部材９ｃには下方に変位可能
な内部応力を備えて配設されている。即ち第１、第２支
持部材９ｂ、９ｃには、それぞれが上方と下方の異なる
方向に変位可能な内部応力を備えた状態になっている。
このような内部応力を備えた第１、第２支持部材９ｂ、
９ｃに、遮断部材７を水平状態に取り付け、電池内圧が
上昇してダイヤフラム部Ｄが上方に変位すると、凸部４
ｅが遮断部材に衝突して、遮断部材７が破断される。す
ると、図示を省略するが、第１支持部材９ｂに取り付け
られた破断後の遮断部材７は上向きに傾斜し、第２支持
部材９ｃに取り付けられた破断後の遮断部材７は下向き
に傾斜し、図５に示す段差Ｈが更に大きくなり、より安
全性を向上させることができる。As a modification of the first embodiment of the present invention, for example, the first support member 9b has an internal stress that can be displaced upward, and the second support member 9c has an internal stress that can be displaced downward. It is arranged with stress. That is, each of the first and second support members 9b and 9c has an internal stress that can be displaced in different directions, that is, upward and downward.
The first and second support members 9b having such internal stress,
9c, the blocking member 7 is mounted in a horizontal state, and when the internal pressure of the battery rises and the diaphragm portion D is displaced upward, the protrusion 4
e collides with the blocking member, and the blocking member 7 is broken. Then, although not shown, the cut-off blocking member 7 attached to the first support member 9b is inclined upward, and the cut-off blocking member 7 attached to the second support member 9c is inclined downward, The step H shown in FIG. 5 is further increased, and the safety can be further improved.
【００２９】本発明の第１の実施の形態では、リード９
の第１、第２支持部材９ｂ、９ｃの材質をニッケル等の
硬質の金属材料で説明したが、第１、第２支持部材９
ｂ、９ｃを弾性限界が低く、ダイヤフラム部Ｄによる変
位程度でも塑性変形可能な金属材料、例えば焼鈍した鉄
板鉄等の材料を使ってもよい。即ち、遮断部材７は、両
端部が破断の際の変位で塑性変形可能な金属から成る第
１、第２支持部材９ｂ、９ｃで両持ち支持されたもので
もよい。このような第１、第２支持部材９ｂ、９ｃの材
質を、例えば焼鈍した鉄等の材料を使っうことにより、
ダイヤフラム部Ｄが反転して遮断部材７が破断される
と、破断後の遮断部材７間に形成された段差Ｈは、電池
の内部圧の変化等により、ダイヤフラム部Ｄが若干下方
に変位したとしても、第１支持部材９ｂは上向きに傾斜
したままになっているので、第１支持部材９ｂに支持さ
れた破断後の遮断部材７が、ダイヤフラム部Ｄの下方へ
の変位に追従して下方に変位することがない。そのため
に、段差Ｈが小さくなることがなく、切断された導電路
７ｂが再度接触するような障害を防止できる。In the first embodiment of the present invention, the leads 9
Although the material of the first and second support members 9b and 9c has been described as a hard metal material such as nickel, the first and second support members 9b and 9c
For b and 9c, a metal material having a low elastic limit and capable of being plastically deformed even by the degree of displacement by the diaphragm portion D, for example, a material such as annealed iron plate iron may be used. That is, the blocking member 7 may be supported at both ends by the first and second support members 9b and 9c made of metal that can be plastically deformed by displacement at the time of breaking. By using a material such as an annealed iron for the material of the first and second support members 9b and 9c,
When the diaphragm portion D is reversed and the blocking member 7 is broken, the step H formed between the breaking members 7 after the breakage is caused by the fact that the diaphragm portion D is displaced slightly downward due to a change in the internal pressure of the battery or the like. Also, since the first support member 9b remains inclined upward, the breaking member 7 supported by the first support member 9b is moved downward following the downward displacement of the diaphragm portion D. There is no displacement. Therefore, the step H does not become small, and it is possible to prevent a failure such that the cut conductive path 7b comes into contact again.
【００３０】また、本発明の電池の電路遮断部品Ｔの第
２の実施の形態を図６〜図９に基づいて説明する。ま
ず、図６に示すように、リード９の左右の第１支持部材
９ｂ、９ｃが所定の角度で上向きに折り曲げられてい
る。このような第１、第２支持部材９ｂ、９ｃの下方に
遮断部材７を位置させ、第１、第２支持部材９ｂ、９ｃ
を、図示しない組立治具等で矢印Ｊ方向の下方に押し下
げ、図７に示すように水平状態にし、このような第１、
第２支持部材９ｂ、９ｃに遮断部材７の導電路７ｂを半
田付け等で取り付ける。このような上向き状態の第１、
第２支持部材９ｂ、９ｃを水平状態にすることで、第
１、第２支持部材９ｂ、９ｃには上方に変位可能な内部
応力を備えることができる。このときのダイヤフラム部
Ｄの凸部４ｅは、遮断部材７の応力集中部７ａの下方に
位置した状態なっている。A second embodiment of the circuit breaker T for a battery according to the present invention will be described with reference to FIGS. First, as shown in FIG. 6, the left and right first support members 9b and 9c of the lead 9 are bent upward at a predetermined angle. The blocking member 7 is located below the first and second support members 9b and 9c, and the first and second support members 9b and 9c
Is pushed down in the direction of arrow J by an assembling jig (not shown) or the like to make it horizontal as shown in FIG.
The conductive path 7b of the blocking member 7 is attached to the second support members 9b and 9c by soldering or the like. The first in such an upward state,
By setting the second support members 9b and 9c in a horizontal state, the first and second support members 9b and 9c can be provided with internal stress that can be displaced upward. At this time, the convex portion 4e of the diaphragm portion D is located below the stress concentration portion 7a of the blocking member 7.
【００３１】そして、電池の内圧が上昇すると、図８に
示すように、ダイヤフラム部Ｄは薄肉形成された連結部
４ｄが一気に上方に反転して、凸部４ｅが遮断部材７の
応力集中部７ａの下面に衝突し、遮断部材７が応力集中
部７ａの中央部付近から破断される。この遮断部材７が
破断されると同時に、前述したような第１、第２支持部
材９ｂ、９ｃの内部応力により、図９に示すように破断
後の遮断部材７をそれぞれ上向きに傾斜させ、破断後の
左右に分割された遮断部材７間に大きな隙間Ｎを形成す
ることができる。When the internal pressure of the battery rises, as shown in FIG. 8, the connecting portion 4d of the diaphragm portion D is turned upward at a stretch, and the convex portion 4e becomes the stress concentration portion 7a of the blocking member 7. And the breaking member 7 is broken from near the center of the stress concentration portion 7a. At the same time as the breaking member 7 is broken, the breaking member 7 is inclined upward by the internal stress of the first and second support members 9b and 9c as shown in FIG. A large gap N can be formed between the left and right divided blocking members 7.
【００３２】この隙間Ｎは、第１、第２支持部材９ｂ、
９ｃに加えられている内部応力によって、狭くなるよう
なことがないので、従来のような破断後に再度導通した
りするような危険性はない。前述したような本発明の第
２の実施の形態で、第１、第２保持部材９ｂ、９ｃの両
方に上方に変位可能な内部応力を備えたもので説明した
が、第１、第２保持部材９ｂ、９ｃの少なくとも一方
に、上方に変位可能な内部応力を備えたものででもよ
い。This gap N is defined by the first and second support members 9b,
Since there is no possibility of narrowing due to the internal stress applied to 9c, there is no danger of conducting again after breaking as in the prior art. In the above-described second embodiment of the present invention, both the first and second holding members 9b and 9c have internal stresses that can be displaced upward. At least one of the members 9b and 9c may be provided with an internal stress capable of being displaced upward.
【００３３】[0033]
【発明の効果】本発明の電池の電路遮断部品は、ダイヤ
フラム部の薄肉の連結部の中央部付近に遮断部材側に突
出する凸部を設け、この凸部と遮断部材の応力集中部と
の位置を互いにずらして配設したので、電池の内圧が上
昇してダイヤフラム部が変位し、遮断部材が破断される
と、破断後の遮断部材間に大きな段差を形成することが
できる。この大きな段差により、遮断部材の導電路が再
度導通するようなことがなく、安全性の高い電池の電路
遮断部品を提供することができる。According to the present invention, the electric circuit interrupting component of the battery is provided with a convex portion protruding toward the interrupting member near the center of the thin connecting portion of the diaphragm portion. Since the positions are shifted from each other, when the internal pressure of the battery rises and the diaphragm part is displaced and the breaking member is broken, a large step can be formed between the breaking members after breaking. Due to this large step, the conductive path of the blocking member does not conduct again, and it is possible to provide a highly safe battery path disconnecting component.
【００３４】また、遮断部材は両端部がそれぞれ第１、
第２支持部材に両持ち支持され、この第１第２支持部材
には、それぞれが上方と下方の異なる方向に変位可能な
内部応力を備えたので、破断後の遮断部材間に更に大き
な段差を形成することができ、更に安全性を向上させる
ことができる。The blocking member has first and second ends, respectively.
The first and second support members are supported at both ends by the second support member, and each of the first and second support members has an internal stress that can be displaced in different directions upward and downward. Can be formed, and the safety can be further improved.
【００３５】また、遮断部材は両端部がバネ性のない軟
質金属から成る第１、第２支持部材で両持ち支持されて
いるので、遮断部材を破断後に、電池の内圧が変化して
ダイヤフラム部が若干下方に変位したとしても、第１、
第２支持部材は変位することがなく、破断後の遮断部材
の導電路が再度導通するようなことがない。Further, since both ends of the blocking member are supported at both ends by the first and second supporting members made of a soft metal having no spring property, the internal pressure of the battery changes after the breaking of the blocking member, so that the diaphragm portion is formed. Is slightly down,
The second support member is not displaced, and the conductive path of the breaking member after the break does not conduct again.
【００３６】また、ダイヤフラム部の連結部の中央部付
近に遮断部材側に突出する凸部を設け、第１、第２支持
部材の少なくとも一方には上方に変位可能な内部応力を
有し、電池ケースの内圧が所定値以上に上昇するとダイ
ヤフラム部が変位し、前記凸部が前記遮断部材を押圧し
て前記応力集中部から破断し、前記第１、第２支持部材
の少なくとも一方を上向きに変位させるようにしたの
で、破断後の遮断部材間の隙間を大きくすることがで
き、遮断部材の導電路が再度導通するようなことがな
い、安全性の高い電池の電路遮断部品を提供することが
できる。A projection protruding toward the blocking member is provided in the vicinity of the center of the connecting portion of the diaphragm. At least one of the first and second support members has an internal stress capable of being displaced upward. When the internal pressure of the case rises above a predetermined value, the diaphragm portion is displaced, the convex portion presses the blocking member and breaks from the stress concentration portion, and at least one of the first and second support members is displaced upward. Therefore, it is possible to increase the gap between the cutoff members after the breakage, and to provide a highly safe electric circuit cutoff component for a battery, in which the conductive path of the cutoff member does not conduct again. it can.
【図１】本発明の電池の電路遮断部品の断面正面図であ
る。FIG. 1 is a cross-sectional front view of a circuit breaker for a battery of the present invention.
【図２】本発明の電池の電路遮断部品の分解斜視図であ
る。FIG. 2 is an exploded perspective view of a circuit breaker for a battery according to the present invention.
【図３】本発明の電池の電路遮断部品の第１の実施の形
態の部分拡大断面斜視図である。FIG. 3 is a partially enlarged cross-sectional perspective view of the first embodiment of the electric circuit blocking component of the battery according to the present invention.
【図４】本発明の電池の電路遮断部品の第１の実施の形
態の部分拡大断面図である。FIG. 4 is a partially enlarged cross-sectional view of the first embodiment of the electric circuit blocking component of the battery according to the present invention.
【図５】本発明の電池の電路遮断部品の第１の実施の形
態の動作を説明する図である。FIG. 5 is a view for explaining the operation of the first embodiment of the electric circuit breaker of the battery according to the present invention.
【図６】本発明の電池の電路遮断部品の第２の実施の形
態を説明する図である。FIG. 6 is a view for explaining a second embodiment of the electric circuit breaker of the battery according to the present invention.
【図７】本発明の電池の電路遮断部品の第２の実施の形
態を説明する図である。FIG. 7 is a view for explaining a second embodiment of a circuit breaker for a battery according to the present invention.
【図８】本発明の電池の電路遮断部品の第２の実施の形
態の動作を説明する図であるFIG. 8 is a diagram for explaining the operation of the second embodiment of the electric circuit interrupting component of the battery according to the present invention.
【図９】本発明の電池の電路遮断部品の第２の実施の形
態の動作を説明する図である。FIG. 9 is a view for explaining the operation of the second embodiment of the electric circuit breaker of the battery according to the present invention.
【図１０】本発明の電池の電路遮断部品の遮断部材のそ
の他の形状を説明する図である。FIG. 10 is a view for explaining another shape of the interruption member of the electric circuit interruption component of the battery of the present invention.
【図１１】従来の電池の電路遮断部品のダイヤフラム部
の部分拡大断面図である。FIG. 11 is a partially enlarged cross-sectional view of a diaphragm portion of a conventional circuit breaking component for a battery.
【図１２】従来の電池の電路遮断部品のダイヤフラム部
の動作を説明する図である。FIG. 12 is a view for explaining the operation of a diaphragm section of a conventional circuit interrupting component of a battery.
Ｔ 本発明の電池の電路遮断部品 ２ 端子部 ２ａ 接続片部 ２ｂ 平坦部 ２ｃ 開口部 ３ 絶縁体 ３ａ 円筒部 ３ｂ 凹部 ３ｃ 通気口 ３ｄ 孔 ３ｅ 開口 ４ 電池蓋 ４ａ 底板 ４ｂ 突条部 ４ｃ 孔部 Ｄ ダイヤフラム部 ４ｄ 連結部 ４ｅ 凸部 Ｚ 安全弁部 ４ｆ 突出部 ４ｇ 連結部 ４ｈ 突起部 ４ｊ 鍔部 ４ｋ 凹部 ５ 保持体 ５ａ 貫通孔 ５ｂ 開口部 ５ｃ 台座部 ５ｄ 開口 ５ｅ 切り欠き部 ５ｆ 孔部 ６ 外部電極 ６ａ 電極部 ６ｂ 脚部 ６ｃ 接続部 ７ 遮断用エレメント ７ａ 応力集中部 ７ｂ 導電路 ８ リベット ８ａ 円柱部 ８ｂ 鍔部 ８ｃ 環状突条部 ８ｄ 接続部 ９ リード ９ａ リベット接続部 ９ｂ 第１支持部材 ９ｃ 第２支持部材 ９ｄ 電極接続部 ９ｅ 固定部 T Circuit blockage part of battery of the present invention 2 Terminal part 2a Connecting piece part 2b Flat part 2c Opening part 3 Insulator 3a Cylindrical part 3b Concave part 3c Vent 3d hole 3e opening 4 Battery lid 4a Bottom plate 4b Ridge part 4c Hole D Diaphragm part 4d Connecting part 4e Projecting part Z Safety valve part 4f Projecting part 4g Connecting part 4h Projecting part 4j Flange part 4k Concave part 5 Holder 5a Through hole 5b Opening 5c Base 5d Opening 5e Notch 5f Hole 6 External Electrode part 6b Leg part 6c Connection part 7 Breaking element 7a Stress concentration part 7b Conductive path 8 Rivet 8a Cylindrical part 8b Flange part 8c Annular ridge 8d Connection part 9 Lead 9a Rivet connection part 9b First support member 9c Second support Member 9d Electrode connection part 9e Fixed part
Claims (4)
電池ケースの内部を気密に遮蔽する電池蓋と、この電池
蓋の一部を薄肉にした連結部を前記電池ケースの内方に
向けて膨出形成したダイヤフラム部と、このダイヤフラ
ム部の上方に配設され、導電路が形成され、一部を細幅
あるいは薄肉に形成した破断可能な応力集中部を有する
遮断部材とを備え、前記ダイヤフラム部の前記連結部の
中央部付近に前記遮断部材側に突出する凸部を設け、こ
の凸部と前記遮断部材の前記応力集中部との位置を互い
にずらして配設したことを特徴とする電池の電路遮断部
品。1. A battery case accommodating a power generating element, a battery cover for hermetically shielding the inside of the battery case, and a connecting portion in which a part of the battery cover is thinned is directed toward the inside of the battery case. A diaphragm member having a bulged diaphragm portion, and a blocking member provided above the diaphragm portion, having a conductive path formed therein, and having a rupturable stress concentration portion partially or thinly formed, A battery provided with a convex portion protruding toward the blocking member near the center of the connecting portion of the portion, and disposing the convex portion and the stress concentration portion of the blocking member at positions shifted from each other. Circuit breaker parts.
第２支持部材に両持ち支持され、この第１、第２支持部
材にはそれぞれが上方と下方の異なる方向に変位可能な
内部応力を備えたことを特徴とする請求項１記載の電池
の電路遮断部品。2. The blocking member has first and second ends, respectively.
2. The battery circuit according to claim 1, wherein the first and second support members are supported at both ends by a second support member, and each of the first and second support members has an internal stress that can be displaced in a different direction upward and downward. Shut-off parts.
で塑性変形可能な金属から成る第１、第２支持部材で両
持ち支持されていることを特徴とする請求項１記載の電
池の電路遮断部品。3. The battery according to claim 1, wherein both ends of the blocking member are supported at both ends by first and second support members made of a metal that can be plastically deformed by displacement at the time of breaking. Circuit breaker parts.
電池ケースの内部を気密に遮蔽する電池蓋と、この電池
蓋の一部を薄肉にした連結部を前記電池ケースの内方に
向けて膨出形成したダイヤフラム部と、このダイヤフラ
ム部の上方に配設され、導電路が形成されて一部に細幅
部あるいは薄肉部から成る遮断部材と、この遮断部材の
両端部を両持ち支持する第１、第２支持部材とを備え、
前記ダイヤフラム部の前記連結部の中央部付近に前記遮
断部材側に突出する凸部を設け、前記第１、第２支持部
材の少なくとも一方に上方に変位可能な内部応力を有
し、前記電池ケースの内圧が所定値以上に上昇すると前
記ダイヤフラム部が変位し、前記凸部が前記遮断部材を
押圧して前記応力集中部から破断し、前記内部応力を有
する前記第１、第２支持部材の少なくとも一方を上向き
に変位させるようにしたことを特徴とする電池の電路遮
断部品。4. A battery case accommodating a power generating element, a battery cover for hermetically shielding the inside of the battery case, and a connecting portion in which a part of the battery cover is thinned is directed toward the inside of the battery case. A bulged diaphragm portion, a blocking member disposed above the diaphragm portion and formed with a conductive path and partially formed of a narrow portion or a thin portion, and both ends of the blocking member are supported. First and second support members,
A projecting portion protruding toward the blocking member is provided near a center of the connecting portion of the diaphragm, and at least one of the first and second supporting members has an internal stress capable of being displaced upward; When the internal pressure rises above a predetermined value, the diaphragm portion is displaced, the convex portion presses the blocking member and breaks from the stress concentration portion, and at least the first and second supporting members having the internal stress A circuit blockage part for a battery, wherein one of the parts is displaced upward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10136361A JPH11329402A (en) | 1998-05-19 | 1998-05-19 | Circuit breaking part of battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10136361A JPH11329402A (en) | 1998-05-19 | 1998-05-19 | Circuit breaking part of battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11329402A true JPH11329402A (en) | 1999-11-30 |
Family
ID=15173384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10136361A Withdrawn JPH11329402A (en) | 1998-05-19 | 1998-05-19 | Circuit breaking part of battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11329402A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1126534A1 (en) * | 2000-02-16 | 2001-08-22 | Samsung SDI Co. Ltd. | Sealed battery |
| JP2005071836A (en) * | 2003-08-26 | 2005-03-17 | Toshiba Shomei Precision Kk | Sealing plate and sealed battery |
| KR100938104B1 (en) | 2007-10-30 | 2010-01-21 | 삼성에스디아이 주식회사 | Can type secondary battery and manufacturing method of circuit board for secondary battery |
| EP2541642A1 (en) * | 2011-07-01 | 2013-01-02 | Saft | Safety device for sealed battery |
| WO2015146365A1 (en) * | 2014-03-28 | 2015-10-01 | 株式会社豊田自動織機 | Current breaking device and electricity storage device using same |
-
1998
- 1998-05-19 JP JP10136361A patent/JPH11329402A/en not_active Withdrawn
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1126534A1 (en) * | 2000-02-16 | 2001-08-22 | Samsung SDI Co. Ltd. | Sealed battery |
| US6555263B1 (en) | 2000-02-16 | 2003-04-29 | Samsung Sdi Co., Ltd | Sealed battery with internal pressure activated safety mechanism |
| JP2005071836A (en) * | 2003-08-26 | 2005-03-17 | Toshiba Shomei Precision Kk | Sealing plate and sealed battery |
| KR100938104B1 (en) | 2007-10-30 | 2010-01-21 | 삼성에스디아이 주식회사 | Can type secondary battery and manufacturing method of circuit board for secondary battery |
| US8039134B2 (en) | 2007-10-30 | 2011-10-18 | Samsung Sdi Co., Ltd. | Can type secondary battery and method of manufacturing circuit board for the secondary battery |
| EP2541642A1 (en) * | 2011-07-01 | 2013-01-02 | Saft | Safety device for sealed battery |
| FR2977379A1 (en) * | 2011-07-01 | 2013-01-04 | Accumulateurs Fixes | SAFETY DEVICE FOR SEALED ACCUMULATOR |
| US9099715B2 (en) | 2011-07-01 | 2015-08-04 | Saft | Safety device for a sealed accumulator |
| WO2015146365A1 (en) * | 2014-03-28 | 2015-10-01 | 株式会社豊田自動織機 | Current breaking device and electricity storage device using same |
| JP2015191811A (en) * | 2014-03-28 | 2015-11-02 | 株式会社豊田自動織機 | Current cut-off device and power storage device using the same |
| US9899657B2 (en) | 2014-03-28 | 2018-02-20 | Kabushiki Kaisha Toyota Jidoshokki | Current interruption device and electrical energy storage device using the same |
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