JP2002216743A - Pressure cutoff sensor for battery - Google Patents

Pressure cutoff sensor for battery

Info

Publication number
JP2002216743A
JP2002216743A JP2001010899A JP2001010899A JP2002216743A JP 2002216743 A JP2002216743 A JP 2002216743A JP 2001010899 A JP2001010899 A JP 2001010899A JP 2001010899 A JP2001010899 A JP 2001010899A JP 2002216743 A JP2002216743 A JP 2002216743A
Authority
JP
Japan
Prior art keywords
battery
pressure
cutoff
path
sensor
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Withdrawn
Application number
JP2001010899A
Other languages
Japanese (ja)
Inventor
Tadamitsu Azema
忠満 畦間
Original Assignee
Alps Electric Co Ltd
アルプス電気株式会社
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 Alps Electric Co Ltd, アルプス電気株式会社 filed Critical Alps Electric Co Ltd
Priority to JP2001010899A priority Critical patent/JP2002216743A/en
Publication of JP2002216743A publication Critical patent/JP2002216743A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • H01M10/052Li-accumulators
    • H01M10/0525Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

PROBLEM TO BE SOLVED: To simplify a protection network without exploding a battery during charging and fracturing IC parts or the like of an electric apparatus during discharging by providing a fuse for cutting off a cable way when a current of a predetermined value or more passes. SOLUTION: In this pressure cutoff sensor for the battery, since an insulating substrate 11 is fractured and the cable way of a cutoff path 13 is cutoff by displacement of a pressure sensing means D by an internal pressure rise of a cover member and the cable way of the cutoff path 13 is cutoff when a current of the predetermined value or more passes, when the battery is used in an electric apparatus and if a current of the predetermined value or more passes during usage, the cutoff path 13 of the fuse H is cut off and fracture or ignition of the IC parts or the like used in the electric apparatus is prevented.

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、リチウムイオン2
次電池等に使用して好適な電池用圧力遮断センサに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention
The present invention relates to a pressure cutoff sensor for a battery suitable for use in a secondary battery or the like.

【0002】 [0002]

【従来の技術】従来の電池用圧力遮断センサは、銀等か
らなる導電路が設けられた絶縁基板を電池カバーに取り
付けた構成を有し、そして、カバー内の圧力が上昇する
と、カバーが変位して絶縁基板を破断して、導電路が遮
断され、これにより特に充電時の電池の爆発等を防止す
るようになっている。
2. Description of the Related Art A conventional battery pressure cutoff sensor has a structure in which an insulating substrate provided with a conductive path made of silver or the like is attached to a battery cover, and when the pressure in the cover increases, the cover is displaced. As a result, the insulating substrate is broken and the conductive path is cut off, thereby preventing the battery from exploding, especially during charging.

【0003】 [0003]

【発明が解決しようとする課題】しかし、従来の電池用圧力遮断センサは、電池を電気機器に使用した場合、特に放電時に電気部品や配線パターン等のショートにより、所定値以上の電流が電池の導電路に流れて、導電路が遮断されず、電気機器のIC部品等に影響を与えて、
IC部品等が破損するという問題がある。 There is a problem that IC parts and the like are damaged. However, the conventional battery pressure cutoff sensor has a problem that when a battery is used in an electric device, a current of a predetermined value or more due to a short-circuit of an electric component or a wiring pattern during electric discharge occurs. Flowing into the conductive path, the conductive path is not interrupted, affecting IC parts of electrical equipment, etc. However, the conventional battery pressure cutoff sensor has a problem that when a battery is used in an electric device, a current of a predetermined value or more due to a short-circuit of an electric component or a wiring pattern during electric discharge occurs. Flowing into the conductive path, the conductive path is not interrupted, affecting IC parts of electrical equipment, etc.
There is a problem that IC parts and the like are damaged. There is a problem that IC parts and the like are damaged.

【0004】本発明は、所定値以上の電流が流れた時、
電路が遮断するヒューズを備えて、充電時には電池が爆発せず、また、放電時には電気機器のIC部品等の破損のなく、保護回路を簡素化できる電池用圧力遮断センサを提供することを目的とする。 The purpose is to provide a pressure cutoff sensor for batteries that is equipped with a fuse that cuts off the electric circuit, does not explode the battery during charging, and does not damage the IC parts of electrical equipment during discharging, and can simplify the protection circuit. To do. According to the present invention, when a current of a predetermined value or more flows, According to the present invention, when a current of a predetermined value or more flows,
An object of the present invention is to provide a battery pressure cut-off sensor that has a fuse that cuts off an electric circuit, does not explode a battery during charging, and does not damage IC components of an electric device during discharging and can simplify a protection circuit. I do. An object of the present invention is to provide a battery pressure cut-off sensor that has a fuse that cuts off an electric circuit, does not explode a battery during charging, and does not damage IC components of an electric device during similarly and can simplify a protection circuit. I do.

【0005】 [0005]

【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、少なくとも一対の電極、及
び、この一対の電極間に接続され、所定値以上の電流が
流れると電路を遮断する導電体からなる遮断路とを絶縁
基板上に形成して構成されたヒューズと、発電素子を収
納し、前記ヒューズを取り付けたカバー部材とを備え、
前記カバー部材には、このカバー部材の内圧の上昇に応じて変位する感圧手段を設け、前記カバー部材に取り付けられた前記ヒューズの一方の前記電極には、前記発電素子の正極、或いは負極が接続され、前記カバー部材の内圧上昇による前記感圧手段の変位によって、前記絶縁基板が破断して、前記遮断路の電路が遮断すると共に、 The cover member is provided with pressure-sensitive means that displaces in response to an increase in the internal pressure of the cover member, and one of the electrodes of the fuse attached to the cover member has a positive electrode or a negative electrode of the power generation element. When the cover member is connected and the pressure sensitive means is displaced due to an increase in the internal pressure of the cover member, the insulating substrate is broken, the electric circuit of the cutoff path is cut off, and the electric circuit is cut off.
所定値以上の電流が流れると、前記遮断路の電路が遮断するようにした構成とした。 When a current of a predetermined value or more flows, the electric circuit of the cutoff path is cut off. As a first means for solving the above problems, at least a pair of electrodes and an electric circuit which is connected between the pair of electrodes and cuts off an electric circuit when a current of a predetermined value or more flows. A fuse configured by forming a cutoff path made of a conductive material on an insulating substrate, and a cover member that houses the power generation element and has the fuse attached thereto, A fuse configured by forming. As a first means for solving the above problems, at least a pair of electrodes and an electric circuit which is connected between the pair of electrodes and cuts off an electric circuit when a current of a predetermined value or more flows. a cutoff path made of a conductive material on an insulating substrate, and a cover member that houses the power generation element and has the fuse attached thereto,
The cover member is provided with pressure-sensitive means that is displaced in accordance with an increase in the internal pressure of the cover member, and one of the electrodes of the fuse attached to the cover member has a positive electrode or a negative electrode of the power generating element. Connected, by the displacement of the pressure sensing means due to an increase in the internal pressure of the cover member, the insulating substrate is broken, and the electric circuit of the cutoff path is cut off, The cover member is provided with pressure-sensitive means that is displaced in accordance with an increase in the internal pressure of the cover member, and one of the electrodes of the fuse attached to the cover member has a positive electrode or a negative electrode of the Power generating element. Connected, by the displacement of the pressure sensing means due to an increase in the internal pressure of the cover member, the insulating substrate is broken, and the electric circuit of the cutoff path is cut off,
When a current equal to or more than a predetermined value flows, the electric circuit of the interruption circuit is interrupted. When a current equal to or more than a predetermined value flows, the electric circuit of the interruption circuit is interrupted.

【0006】また、第2の解決手段として、前記遮断路には、一部が細幅となった細幅部を設けた構成とした。
また、第3の解決手段として、前記遮断路には、その側縁部にV字状の傾斜部を設けて、前記細幅部を形成した構成とした。 Further, as a third solution, the blocking path is provided with a V-shaped inclined portion at a side edge portion thereof to form the narrow portion. Further, as a second solution, the cut-off path is provided with a narrow portion which is partially narrow. Further, as a second solution, the cut-off path is provided with a narrow portion which is partially narrow.
As a third solution, the cut-off path is provided with a V-shaped inclined portion at a side edge thereof to form the narrow portion. As a third solution, the cut-off path is provided with a V-shaped inclined portion at a side edge thereof to form the narrow portion.

【0007】また、第4の解決手段として、前記遮断路
には、その側縁部に凹凸部を設けて、前記細幅部を形成
した構成とした。また、第5の解決手段として、前記遮
断路上には、絶縁材からなる保護膜を形成した構成とし
た。
As a fourth solution, the cut-off path is provided with an uneven portion on a side edge thereof to form the narrow portion. As a fifth solution, a protective film made of an insulating material is formed on the cutoff path.

【0008】また、第6の解決手段として、前記絶縁基板には、応力集中部を設けた構成とした。また、第7の解決手段として、前記絶縁基板の側部に切り欠き部を設けて前記応力集中部を形成した構成とした。 As a sixth solution, a stress concentration portion is provided on the insulating substrate. Further, as a seventh solution, a cutout portion is provided on a side portion of the insulating substrate to form the stress concentration portion.

【0009】 [0009]

【発明の実施の形態】本発明の電池用圧力遮断センサの
図面を説明すると、図1は本発明の電池用圧力遮断セン
サの第1実施例の要部の分解斜視図、図2は本発明の電
池用圧力遮断センサの第1実施例の要部の断面図、図3
は本発明の電池用圧力遮断センサの動作を示す説明図、
図4は本発明の電池用圧力遮断センサの動作を示す説明
図である。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings of the pressure cut-off sensor for a battery according to the present invention, FIG. 1 is an exploded perspective view of a main part of a first embodiment of the pressure cut-off sensor for a battery according to the present invention, and FIG. FIG. 3 is a cross-sectional view of a main part of a first embodiment of the pressure cut-off sensor for a battery of FIG.
Is an explanatory diagram showing the operation of the battery pressure cutoff sensor of the present invention, Is an explanatory diagram showing the operation of the battery pressure cutoff sensor of the present invention,
FIG. 4 is an explanatory view showing the operation of the battery pressure cutoff sensor of the present invention. FIG. 4 is an explanatory view showing the operation of the battery pressure cutoff sensor of the present invention.

【0010】また、図5は本発明の電池用圧力遮断セン
サの第1実施例の係るヒューズの斜視図、図6は本発明
の電池用圧力遮断センサの第2実施例の係るヒューズの
斜視図、図7は本発明の電池用圧力遮断センサの第2実
施例の係るヒューズの斜視図である。
FIG. 5 is a perspective view of a fuse according to a first embodiment of the battery pressure cutoff sensor of the present invention, and FIG. 6 is a perspective view of a fuse according to a second embodiment of the battery pressure cutoff sensor of the present invention. FIG. 7 is a perspective view of a fuse according to a second embodiment of the battery pressure cut-off sensor of the present invention.

【0011】次に、本発明の電池用圧力遮断センサの第
1実施例の構成を図1〜図5に基づいて説明すると、電
路遮断部品Tは、全体形状が略矩形に形成され、端子部
2と、絶縁体3と、感圧手段を形成するダイヤフラム部
D、並びに安全弁部Zとを有し、カバー部材Kの一部を
構成する電池蓋(負ケース)4と、保持体5、外部電極
6、ヒューズH、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、電池蓋
4の周囲の鍔部4jがカバー部材Kに溶接等で取り付け
られて、カバー部材Kの内部が気密に遮蔽されるように
なっている。
Next, the structure of a first embodiment of a battery pressure cut-off sensor according to the present invention will be described with reference to FIGS. 1 to 5. The circuit cut-off component T is formed in a substantially rectangular overall shape. 2, an insulator 3, a diaphragm portion D forming pressure sensing means, and a safety valve portion Z, and a battery lid (negative case) 4 constituting a part of the cover member K; It is mainly composed of an electrode 6, a fuse H, and a rivet 8. In the electric circuit blocking component T of the battery having such a configuration, the flange 4j around the battery cover 4 is attached to the cover member K by welding or the like, so that the inside of the cover member K is airtightly shielded. .

【0012】端子部2はアルミニウム製で、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。 The terminal portion 2 is made of aluminum and is bent at a substantially right angle. A connecting piece 2a to be welded to the connecting portion 8d of the rivet 8 extends at one end 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。 A recess 3b that allows the diaphragm portion D of the above to bulge downward in the drawing, ventilation holes 3c and 3c formed through the bottom surface of the recess 3b, a hole 3d for welding, and a safety valve portion Z of the battery lid 4. It is composed of substantially rectangular openings 3e and 3e and a protrusion 3f for positioning. 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、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 The battery lid 4 is made of a conductive metal plate such as a stainless steel material, is formed in the shape of a lunch box having a substantially rectangular outer shape, and has a substantially rectangular collar portion 4j on the outer peripheral portion.
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。 Then, the inside of the flange portion 4j is projected downward by drawing or the like to form a flat bottom plate 4a. 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 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, is formed in a substantially rectangular lunch box shape, and has a substantially rectangular flange portion 4j on an outer peripheral portion. 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, is formed in a substantially rectangular lunch box shape, and has a substantially rectangular flange portion 4j on an outer peripheral portion.
A flat bottom plate 4a is formed by projecting the inside of the flange 4j downward by drawing or the like. A flat bottom plate 4a is formed by projecting the inside of the flange 4j downward by drawing or the like.

【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。 A hole 4c is formed through the hole. この孔部4cの図示右隣りには、感圧手段であるダイヤフラム部Dが形成され、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4kの底面を薄肉にした連結部4dが形成されている。 A diaphragm portion D, which is a pressure-sensitive means, is formed on the right side of the hole portion 4c in the drawing, and the diaphragm portion D is formed with a recess 4k having an annular recess on the outer peripheral portion of a part of the back surface of the bottom plate 4a. A connecting portion 4d is formed in which the bottom surface of the recess 4k is thinned. また、この連結部4dの中央部付近には、図示上方のヒューズH(後述する)側に突出する凸部4eが形成されている。 Further, in the vicinity of the central portion of the connecting portion 4d, a convex portion 4e protruding toward the fuse H (described later) is formed in the upper part of the drawing. 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. 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 portion D as pressure sensing means is formed on the right side of the hole 4c in the drawing, and 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 formed by annularly recessing the outer peripheral portion. The connecting portion 4d is formed by making the bottom surface of the concave portion 4k thin. In the vicinity of the center of the connecting portion 4d, a convex portion 4e projecting toward a fuse H (described later) on the upper side in the figure is formed. Is formed. A diaphragm portion D as pressure sensing means is formed on the right side of the hole 4c in the drawing, and the diaphragm portion D is formed with a concave portion 4k in which a part of the back surface of the bottom plate 4a In the vicinity of the center of the connecting portion 4d, a convex portion 4e projecting toward a fuse H (is formed by annularly recessing the outer peripheral portion. The connecting portion 4d is formed by making the bottom surface of the concave portion 4k thin. described later) on the upper side in the figure is formed.

【0015】感圧手段であるダイヤグラム部Dは、中央部の凸部を上方のヒューズH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、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 Is formed, and the safety valve portion Z is formed on a part of the bottom plate 4a with a protruding portion 4f having an annular outer shape and protruding upward in the drawing, and a battery lid 4 and a protruding portion 4f formed at the base of the protruding portion 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4f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。 The connecting portion 4g is formed to be thinner than the protruding portion 4f, and the shape seen from above of the connecting portion 4g is formed in an annular shape. The diagram portion D, which is a pressure-sensitive means, has a connecting portion 4d bulging downwardly in a bowl shape in the direction in which the central convex portion is moved away from the upper fuse H. FIG. The diagram portion D, which is a pressure-sensitive means, has a connecting portion 4d bulging downwardly in a bowl shape in the direction in which the central convex portion is moved away from the upper fuse H. FIG.
The bottom plate 4a near the other end of the battery cover 4 shown in FIG. The bottom plate 4a near the other end of the battery cover 4 shown in FIG.
The safety valve portion Z is formed on a part of the bottom plate 4a, a protrusion 4f having an annular outer shape and protruding upward in the drawing, and a battery cover 4 and a protrusion 4f formed at the root of the protrusion 4f. The safety valve portion Z is formed on a part of the bottom plate 4a, a protrusion 4f having an annular outer shape and extending upward in the drawing, and a battery cover 4 and a protrusion 4f formed at the root of the protrusion 4f.
The connecting portion 4g is formed thinner than the protruding portion 4f, and the shape of the connecting portion 4g as viewed from above is formed in an annular shape. The connecting portion 4g is formed thinner than the forming portion 4f, and the shape of the connecting portion 4g as viewed from above 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値以上に上昇すると、
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。 4 g of the connecting portion formed in a thin wall is broken. 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。 The high-pressure gas inside the battery is discharged to the outside from the broken portion of the connecting portion 4g to prevent the battery from exploding in advance. また、電池蓋4の他端側で底板4a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。 Further, on the other end side of the battery lid 4, a protrusion 4h for positioning is formed at a corner of the bottom plate 4a so that a part of the protrusion 4b projects inward, and is formed on the outer peripheral side of the upper end of the protrusion 4b. The battery lid 4 is formed by forming a flange portion 4j extending outward. 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 internal pressure of the battery rises above a predetermined value, 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 internal pressure of the battery rises above a predetermined value,
The thinly formed 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. A positioning projection 4h is formed at the other end of the battery lid 4 at the corner of the bottom plate 4a so that a part of the projection 4b projects inward, and is formed on the outer periphery of the upper end of the projection 4b. A battery cover 4 is formed by forming a flange 4j extending outward. The thinly formed 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. A positioning projection 4h is formed at the other end of the battery lid 4 at the corner of the bottom plate 4a so that a part of the projection 4b projects inward, and is formed on the outer peripheral of the upper end of the projection 4b. A battery cover 4 is formed by forming a flange 4j extending outward.

【0017】また、保持体5はPPS等の樹脂材料で成
形され、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のまわりが凹部に設けられて、リベット8を接続す
るために形成されたリベット接続部9aと、ヒューズH
を支持するための一対の支持する第1、第2リード9
b、9cをそれぞれ延出した開口部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6
c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。 An electrode connecting portion 9d connected to c, a fixing portion 9e welded to the battery lid 4, an opening 5d formed at a position corresponding to the safety valve portion Z, and a protruding portion 4h for positioning the battery lid 4 are fitted. A notch portion 5e to be combined is provided. 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. Near the one end of the holder 5, a through hole 5a penetrating through the cylindrical portion 3a through which the rivet 8 is inserted, and a rivet connection formed around the through hole 5a in a concave portion for connecting the rivet 8 are formed. Part 9a and fuse H 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. Near the one end of the holder 5, a through hole 5a penetrating through the cylindrical portion 3a through which the rivet 8 is inserted, and a rivet connection formed around the through hole 5a in a concave portion for connecting the rivet 8 are formed. Part 9a and fuse H
A pair of first and second leads 9 for supporting A pair of first and second leads 9 for supporting
b, 9c extending, respectively, opening 5b, 5b, pedestal part 5c which holds external electrode 6, and connection part 6 of external electrode 6 b, 9c extending, respectively, opening 5b, 5b, pedestal part 5c which holds external electrode 6, and connection part 6 of external electrode 6
c, an electrode connection portion 9d, a fixing portion 9e welded to the battery cover 4, an opening 5d formed at a position corresponding to the safety valve portion Z, and a positioning protrusion 4h for positioning the battery cover 4. Notches 5e to be combined are provided. c, an electrode connection portion 9d, a fixing portion 9e welded to the battery cover 4, an opening 5d formed at a position corresponding to the safety valve portion Z, and a positioning protrusion 4h for positioning the battery cover 4. Notches 5e to be combined are provided.

【0018】このような保持体5には、リベット接続部9a、第1、第2リード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。 The fixing portion 9e and the like are integrated by insert molding or the like. 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5f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リード9cに電気的に接続させている。 A hole 5f is formed in the holding body 5 to expose the lower surface of the electrode connecting portion 9d, a welding tool is passed through the hole 5f and the welding tool is applied to the electrode connecting portion 9d of the holding body 5, and the welding tool is applied to the external electrode 6 from above. The external electrode 6 is fixed to the holding body 5 and electrically connected to the second lead 9c by applying the connection portion 6c to the connecting portion 6c for spot welding. The holder 5 has a rivet connection portion 9a, first and second leads 9b and 9c, an electrode connection portion 9d, The holder 5 has a rivet connection portion 9a, first and second leads 9b and 9c, an electrode connection portion 9d,
The fixing portion 9e and the like are integrated by insert molding or the like. The holder 5 has a hole 5f for exposing the lower surface of the electrode connection portion 9d. The hole 5f is passed through the welding tool to the electrode connection portion 9d of the holder 5, and the welding tool is connected to the external electrode 6 from above. The external electrode 6 is fixed to the holder 5 and electrically connected to the second lead 9c by performing spot welding by sandwiching the external electrode 6 against the connecting portion 6c. The fixing portion 9e and the like are integrated by insert molding or the like. The holder 5 has a hole 5f for exposing the lower surface of the electrode connection portion 9d. The hole 5f is passed through the welding tool to the electrode connection portion 9d. of the holder 5, and the welding tool is connected to the external electrode 6 from above. The external electrode 6 is fixed to the holder 5 and electrically connected to the second lead 9c by performing spot welding by sandwiching the external electrode 6 against the connecting portion 6c.

【0019】次に、ヒューズHの構成を、特に図5に基
づいて説明すると、ヒューズHを構成するセラミック等
の絶縁材よりなる絶縁基板11は、矩形状でチップ状を
なし、その長手方向の両側部11aの中央部には、互い
に対向した応力集中部である切り欠き部11bが設けら
れている。また、この絶縁基板11の一面には、一対の
電極12が間隔を置いて形成され、この電極12は、例
えば、絶縁基板11上に形成された銀被膜と、この銀被
膜上に設けられた半田によって形成されている。
Next, the configuration of the fuse H will be described with reference to FIG. 5 in particular. The insulating substrate 11 made of an insulating material such as ceramics constituting the fuse H is formed in a rectangular chip shape and has a longitudinal shape. At the center of both side parts 11a, notch parts 11b, which are stress concentration parts facing each other, are provided. A pair of electrodes 12 are formed on one surface of the insulating substrate 11 at intervals, and the electrodes 12 are provided, for example, on a silver film formed on the insulating substrate 11 and on the silver film. It is formed by solder.

【0020】遮断路13は、銀等の被膜からなり、一対
の電極12間に接続された状態で、絶縁基板11上に形
成されている。そして、この遮断路13には、両側縁部
13aにV字状の傾斜部を設けて、一部が細幅となった
細幅部13bが形成され、この遮断路13は、一対の電
極12間に所定値以上の電流が流れると、細幅部13b
が切断して、電路が遮断されるようになっている。ま
た、遮断路13は、膜厚と細幅部13bの幅を変更する
ことによって、所望の遮断電流値を得るようになってい
る。なお、この遮断路13は、電極12の銀被膜と同一
材料で、同一工程で形成しても良く、また、側縁部13
aの傾斜部は、片側のみでも良い。 The inclined portion of a may be on only one side. また、保護膜15 In addition, the protective film 15
は、絶縁材からなり、この保護膜15は、遮断路13を覆った状態で、絶縁基板11上に形成されている。 Is made of an insulating material, and the protective film 15 is formed on the insulating substrate 11 in a state of covering the blocking path 13. The cutoff path 13 is made of a coating of silver or the like, and is formed on the insulating substrate 11 while being connected between the pair of electrodes 12. The cut-off path 13 is provided with a V-shaped inclined portion at both side edges 13a to form a narrow portion 13b having a narrow width. When a current equal to or more than a predetermined value flows between the narrow portions 13b The cutoff path 13 is made of a coating of silver or the like, and is formed on the insulating substrate 11 while being connected between the pair of electrodes 12. The cut-off path 13 is provided with a V-shaped inclined portion at both side edges 13a to form a narrow portion 13b having a narrow width. When a current equal to or more than a predetermined value flows between the narrow portions 13b
Is cut and the electric circuit is cut off. Further, the cut-off path 13 obtains a desired cut-off current value by changing the film thickness and the width of the narrow portion 13b. The cutoff path 13 may be formed of the same material as the silver coating of the electrode 12 in the same step. Is cut and the electric circuit is cut off. Further, the cut-off path 13 obtains a desired cut-off current value by changing the film thickness and the width of the narrow portion 13b. The cutoff path 13 may be formed of the same material as the silver coating of the electrode 12 in the same step.
The inclined portion a may be provided on only one side. Also, the protective film 15 The inclined portion a may be provided on only one side. Also, the protective film 15
Is formed of an insulating material, and the protective film 15 is formed on the insulating substrate 11 so as to cover the cutoff path 13. Is formed of an insulating material, and the protective film 15 is formed on the insulating substrate 11 so as to cover the cutoff path 13.

【0021】このようなヒューズHは、一対の電極12
の内の一方の電極12が前記リベット接続部9aと導通する第1リード9bに接続され、また、他方の電極12
が第2のリード9cとが接続されると共に、リベット8
と外部電極6とが電気的に接続されている。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、スポット溶接等により固定部9eが電池蓋4の底板4aに取り付けられている。
Such a fuse H includes a pair of electrodes 12.

Is connected to a first lead 9b which is electrically connected to the rivet connection portion 9a. Is connected to a first lead 9b which is electrically connected to the rivet connection portion 9a.
Is connected to the second lead 9c and the rivet 8 Is connected to the second lead 9c and the rivet 8
And the external electrode 6 are electrically connected. On the other hand, the fixing portion 9e is independent and is not electrically connected to the other. The fixing portion 9e of the holder 5 is attached to the bottom plate 4a of the battery lid 4 by spot welding or the like. And the external electrode 6 are electrically connected. On the other hand, the fixing portion 9e is independent and is not efficiently connected to the other. The fixing portion 9e of the holder 5 is attached to the bottom plate 4a of the battery lid 4 by spot welding or the like.

【0022】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をカバー部材Kに組み込んだとき、電池の正極となり、この正極には、第2リード部9cを介してヒューズHの他方の電極12が接続されている。 Is the positive electrode of the battery when the electric circuit blocking component T of the battery is incorporated into the cover member K, and the other electrode 12 of the fuse H is connected to the positive electrode via the second lead portion 9c. 前記ダイヤフラム部D上に配設されたヒューズH The fuse H arranged on the diaphragm portion D
は、前述したように、セラミックス等の脆い絶縁材からなる絶縁基板11上に、電極12と、電極12間に設けられた遮断路13と、絶縁基板11に設けられ、応力集中部を形成する切り欠き部11bと、遮断路13上に設けられた保護膜15とで形成されている。 Is provided on the insulating substrate 11 made of a brittle insulating material such as ceramics, the electrode 12, the blocking path 13 provided between the electrodes 12, and the insulating substrate 11 to form a stress concentration portion, as described above. It is formed of a notch portion 11b and a protective film 15 provided on the blocking path 13. The external electrode 6 is formed by plating a metal plate such as an iron plate 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. The external electrode 6 is formed by plating a metal plate such as an iron plate 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 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
Becomes the positive electrode of the battery when the electric circuit breaking component T of the battery is incorporated into the cover member K, and the other electrode 12 of the fuse H is connected to this positive electrode via the second lead portion 9c. The fuse H provided on the diaphragm D Becomes the positive electrode of the battery when the electric circuit breaking component T of the battery is incorporated into the cover member K, and the other electrode 12 of the fuse H is connected to this positive electrode via the second lead portion 9c. The fuse H provided on the diaphragm D
Are formed on the insulating substrate 11 made of a brittle insulating material such as ceramics, as described above, to form the electrodes 12, the cutoff paths 13 provided between the electrodes 12, and the stress concentration portions provided on the insulating substrate 11. It is formed of a notch 11 b and a protective film 15 provided on the cutoff path 13. Are formed on the insulating substrate 11 made of a brittle insulating material such as ceramics, as described above, to form the electrodes 12, the cutoff paths 13 provided between the electrodes 12, and the stress concentration portions provided on the insulating substrate 11. It is formed of a notch 11 b and a protective film 15 provided on the cutoff path 13.

【0023】前記ヒューズHは両端部の幅広の電極12
が、図2に示すように、保持体5の第1、第2リード9 However, as shown in FIG. 2, the first and second leads 9 of the holding body 5
b、9cに両持ち支持され、第1、第2リード9b、9 Both are supported by b and 9c, and the first and second leads 9b and 9
cと電極12とが半田で接続されている。 c and the electrode 12 are connected by solder. そして、第1、第2リード9b、9c間には、遮断路13からなる電路が形成されている。 An electric circuit composed of a blocking path 13 is formed between the first and second leads 9b and 9c. The fuse H has wide electrodes 12 at both ends. The fuse H has wide electrodes 12 at both ends.
However, as shown in FIG. 2, the first and second leads 9 of the holder 5 However, as shown in FIG. 2, the first and second leads 9 of the holder 5
b, 9c, the first and second leads 9b, 9 b, 9c, the first and second leads 9b, 9
c and the electrode 12 are connected by solder. Then, an electric circuit composed of the cutoff path 13 is formed between the first and second leads 9b and 9c. c and the electrode 12 are connected by solder. Then, an electric circuit composed of the cutoff path 13 is formed between the first and second leads 9b and 9c.

【0024】また、リベット8はアルミ製で、図1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はヒューズHの遮
断路13等の電路を介して端子部2と電気的に接続され
ている。
The rivet 8 is made of aluminum, and as shown in FIG. 1, a cylindrical portion 8a having a slightly thinner tip, 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 lid 4, and the holder 5 are integrated by caulking the tip of the cylindrical portion 8a of the rivet 8, and the caulked portion is connected to the rivet connection 9a of the holder 5. Therefore, the external electrode 6 is electrically connected to the terminal portion 2 via an electric path such as the cutoff path 13 of the fuse H.

【0025】前述したような電路遮断部品Tは、例えば
リチウムイオン2次電池等から成る電池の開放されたカ
バー部材Kの上方から、電路遮断部品Tを挿入し、電池
蓋4の鍔部4jをカバー部材Kの嵌合部全周に亘って溶
接等で接続し、カバー部材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
孔を溶接等で塞ぐことで、カバー部材Kの内部が密閉さ
れる。
As described above, the circuit breaker T is inserted from above the open cover member K of a battery such as a lithium ion secondary battery, and the flange 4j of the battery cover 4 is removed. The entire circumference of the fitting portion of the cover member K is connected by welding or the like, and after the electrolyte is injected from an electrolyte injection hole (not shown) provided on the side surface of the cover member K, the injection hole is welded or the like. By closing with, the inside of the cover member K is sealed.

【0026】そして、このような電池用圧力遮断センサ
を使用した電池を電気機器に使用した場合、使用途上に
おいて所定値以上の電流が流れると、ヒューズHの遮断
路13が遮断するため、電気機器に使用されているIC
部品等が破損するということがない。
When a battery using such a battery pressure cut-off sensor is used in electric equipment, if a current of a predetermined value or more flows during use, the cutoff path 13 of the fuse H is cut off. IC used for
There is no damage to parts and the like.

【0027】また、本発明の電池用圧力遮断センサを使
用し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リード9c、ヒューズH、第
1リード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。また、このよう
な電池に、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 for charging a battery using the battery pressure cut-off sensor of the present invention is, in order from the external electrode (positive electrode) 6, a second lead 9c, a fuse H, a first lead 9b, a rivet. 8, through the terminal portion 2, is led out to a power generating element (not shown) inside the battery. Further, if such a battery 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 rise abnormally.

【0028】すると、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、感圧手段であ
るダイヤフラム部Dは薄肉形成された連結部4dが、図
3の状態から図4に示すように、一気に上方に反転す
る。
Then, the increased internal pressure inside the battery is transmitted to the electric circuit interrupting component T of the battery, and the increased internal pressure of the battery is transmitted to the diaphragm portion D through the ventilation holes 3c, 3c of the insulator 3.
To the safety valve portion Z via the openings 3e and 3e. Then, when the internal pressure of the battery reaches a predetermined pressure, the diaphragm portion D serving as the pressure sensing means causes the thinly formed connecting portion 4d to be turned upward at a stretch from the state of FIG. 3 as shown in FIG. To the safety valve portion Z via the openings 3e and 3e. Then, when the internal pressure of the battery reaches a predetermined pressure, the diaphragm portion D serving as the pressure sensing means causes the thinly formed connecting portion 4d to be turned upward at a stretch from the state of FIG. 3 as shown in FIG.

【0029】この連結部4dの一気の反転で、上方に位
置するヒューズHの絶縁基板11の応力集中部である切
り欠き部11bの下面にダイヤフラム部Dの凸部4eが
衝突し、絶縁基板11が切り欠き部11bから破断され
る。この絶縁基板11の破断により遮断路13の電路が
切断され、リード9の第1、第2リード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。
With the sudden reversal of the connecting portion 4d, the convex portion 4e of the diaphragm portion D collides with the lower surface of the notch portion 11b which is the stress concentration portion of the insulating substrate 11 of the fuse H located above, and the insulating substrate 11 From the notch 11b. The breaking of the insulating substrate 11 cuts off the electric path of the cutoff path 13, cuts off the electric path between the first and second leads 9 b and 9 c of the lead 9, and also forms the external electrode 6 and a power generation element (not shown) in the battery. ) Is interrupted, and charging of the battery is stopped. As a result, a rise in the pressure inside the battery can be suppressed, and a failure such as a rupture of the battery can be prevented.

【0030】また、もしも前記ヒューズH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、電池の電路遮断
部品Tは二重の安全対策がなされている。そして、例え
ば、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、1
0〜20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。 It is set so that the connecting portion 4g of the safety valve portion Z is broken in the range of 0 to 20 atm. If the internal pressure of the battery further increases due to the effect of the electrolyte inside the battery even if the fuse H is broken and the electric circuit is cut off, the safety valve portion Z of the battery lid 4 is also provided. If the internal pressure of the battery further increases due to the effect of the electrolyte inside the battery even if the fuse H is broken and the electric circuit is cut off, the safety valve portion Z of the battery lid 4 is also provided.
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. Has double safety measures. Then, for example, the operating pressure of the electric circuit interrupting component T of the battery is such that the diaphragm 4d is turned over at once in the range of 4 to 10 atm, and 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. Has double safety measures. Then, for example, the operating pressure of the electric circuit interrupting component T of the battery is such that the diaphragm 4d is turned over at once in the range of 4 to 10 atm, and
The connection portion 4g of the safety valve portion Z is set to be broken in the range of 0 to 20 atmospheres. The connection portion 4g of the safety valve portion Z is set to be broken in the range of 0 to 20 atmospheres.

【0031】また、図6は本発明の電池用圧力遮断セン
サの第2実施例に係るヒューズHを示し、この第2実施
例は、前記第1実施例と細幅部13bの構成が異なり、
この第2実施例では、両側縁部13aに凹部を設けて、
一部が細幅となった細幅部13bが形成されたものであ
る。その他の構成は前記第1実施例と同様であるので、
同一部品に同一番号を付し、ここではその説明を省略す
る。なお、側縁部13aの片側のみに凹部を設けても良
い。
FIG. 6 shows a fuse H according to a second embodiment of the battery pressure cut-off sensor of the present invention. This second embodiment differs from the first embodiment in the configuration of the narrow portion 13b.
In the second embodiment, a concave portion is provided on both side edge portions 13a, In the second embodiment, a concave portion is provided on both side edge portions 13a,
A narrow portion 13b, which is partially narrow, is formed. Other configurations are the same as those of the first embodiment. A narrow portion 13b, which is partially narrow, is formed. Other configurations are the same as those of the first embodiment.
The same parts are denoted by the same reference numerals, and description thereof is omitted here. Note that a concave portion may be provided only on one side of the side edge portion 13a. The same parts are prescription by the same reference numerals, and description thereof is omitted here. Note that a concave portion may be provided only on one side of the side edge portion 13a.

【0032】また、図7は本発明の電池用圧力遮断セン
サの第3実施例に係るヒューズHを示し、この第3実施
例は、前記第1、第2実施例と細幅部13bの構成が異
なり、この第3実施例では、両側縁部13aに凹凸部を
設けて、一部が細幅となった細幅部13bが形成された
ものである。その他の構成は前記実施例と同様であるの
で、同一部品に同一番号を付し、ここではその説明を省
略する。なお、側縁部13aの片側のみに凹凸部を設け
ても良い。
FIG. 7 shows a fuse H according to a third embodiment of the battery pressure cut-off sensor of the present invention. This third embodiment differs from the first and second embodiments in the configuration of the narrow portion 13b. However, in the third embodiment, a concavo-convex portion is provided on both side edge portions 13a, and a narrow portion 13b having a narrow portion is formed. Other configurations are the same as those of the above-described embodiment, and therefore, the same components are denoted by the same reference numerals, and description thereof is omitted here. Note that the uneven portion may be provided only on one side of the side edge portion 13a.

【0033】そして、このような第2,第3実施例に示
すヒューズHにおいても、前記第1実施例と同様に、電
池を電気機器に使用した場合、使用途上において所定値
以上の電流が流れると、ヒューズHの遮断路13が遮断
するため、電気機器に使用されているIC部品等が破損
するということがなく、また、電池の過充電に際して
は、感圧手段であるダイヤフラム部Dによって絶縁基板
11が破断されて、遮断路13の電路が切断され、電池
への充電が停止されるようになるものである。
Also, in the fuse H shown in the second and third embodiments, when a battery is used in an electric device, a current of a predetermined value or more flows during use, as in the first embodiment. In addition, since the cutoff path 13 of the fuse H is cut off, the IC parts and the like used in the electric equipment are not damaged, and when the battery is overcharged, it is insulated by the diaphragm D which is a pressure sensing means. The substrate 11 is broken, the electric path of the cutoff path 13 is cut, and charging of the battery is stopped.

【0034】 [0034]

【発明の効果】本発明の電池用圧力遮断センサは、一対の電極12間に接続され、所定値以上の電流が流れると電路を遮断する導電体からなる遮断路13とを絶縁基板11上に形成して構成されたヒューズHが設けられ、主に充電時にはカバー部材の内圧上昇による感圧手段Dの変位によって、絶縁基板11が破断して、遮断路13の電路が遮断すると共に、主に放電時には所定値以上の電流が流れると、遮断路13の電路が遮断するようにしたため、電池を電気機器に使用した場合、使用途上において所定値以上の電流が流れると、ヒューズHの遮断路1
3が遮断して、電気機器に使用されているIC部品等が破損や発火することの無い電池用圧力遮断センサを提供できる。 It is possible to provide a pressure cutoff sensor for a battery in which the IC component or the like used in an electric device is not damaged or ignited by shutting off the battery. 更に、充、放電時の何れの場合でも危険性を小さくでき、保護回路を大幅に簡素化でき、ひいては携帯型機器で重要な要素である小型、軽量、低コスト化が図れる。 Furthermore, the risk can be reduced in both cases of charging and discharging, the protection circuit can be greatly simplified, and the size, weight, and cost, which are important elements in portable devices, can be reduced. According to the present invention, a pressure cutoff sensor for a battery is connected between a pair of electrodes 12 and a cutoff path 13 made of a conductor for cutting off an electric path when a current of a predetermined value or more flows on the insulating substrate 11. A fuse H formed and formed is provided, and mainly during charging, the insulating substrate 11 is broken by the displacement of the pressure sensing means D due to an increase in the internal pressure of the cover member, and the electric circuit of the cutoff path 13 is cut off. At the time of discharging, when a current equal to or more than a predetermined value flows, the electric circuit of the cut-off path 13 is cut off. According to the present invention, a pressure cutoff sensor for a battery is connected between a pair of electrodes 12 and a cutoff path 13 made of a conductor for cutting off an electric path when a current of a predetermined value or more flows on the insulating substrate 11. A fuse H formed and formed is provided, and mainly during charging, the insulating substrate 11 is broken by the displacement of the pressure sensing means D due to an increase in the internal pressure of the cover member, and the electric circuit of the cutoff path 13 is cut off. At the time of insulating, when a current equal to or more than a predetermined value flows, the electric circuit of the cut-off path 13 is cut off.
3 can provide a pressure cutoff sensor for a battery in which IC parts and the like used in the electric device are not damaged or fired. Further, the danger can be reduced in any case of charging and discharging, and the protection circuit can be greatly simplified, which can reduce the size, weight, and cost, which are important elements in a portable device. 3 can provide a pressure cutoff sensor for a battery in which IC parts and the like used in the electric device are not damaged or fired. Further, the danger can be reduced in any case of charging and electrically, and the protection circuit can be greatly simplified, which can reduce the size, weight, and cost, which are important elements in a portable device.

【0035】また、遮断路13には、一部が細幅となった細幅部13bを設けたため、細幅部13bの膜厚と細幅部13bの幅を変更することによって、所望の遮断電流値が得られて、精度の良好なヒューズHを備えた電池用圧力遮断センサを提供できる。 Further, since the cut-off path 13 is provided with a narrow portion 13b which is partially narrow, a desired cut-off can be achieved by changing the thickness of the narrow portion 13b and the width of the narrow portion 13b. A current value is obtained, and it is possible to provide a battery pressure cutoff sensor having a highly accurate fuse H.

【0036】また、遮断路13には、その側縁部13a
にV字状の傾斜部を設けて、細幅部13bを形成したため、その構成が簡単で、細幅部13bの膜厚と細幅部1 Since a V-shaped inclined portion is provided in the narrow portion 13b to form a narrow portion 13b, the configuration is simple, and the film thickness of the narrow portion 13b and the narrow portion 1
3bの幅を変更することによって、所望の遮断電流値が得られて、精度の良好なヒューズHを備えた電池用圧力遮断センサを提供できる。 By changing the width of 3b, a desired breaking current value can be obtained, and a pressure breaking sensor for a battery provided with a fuse H having good accuracy can be provided. The cut-off path 13 has a side edge 13a. The cut-off path 13 has a side edge 13a.
Is formed with a V-shaped inclined portion to form the narrow portion 13b, the configuration is simple, and the film thickness of the narrow portion 13b and the narrow portion 1 Is formed with a V-shaped inclined portion to form the narrow portion 13b, the configuration is simple, and the film thickness of the narrow portion 13b and the narrow portion 1
By changing the width of 3b, a desired cutoff current value can be obtained, and a battery pressure cutoff sensor provided with a highly accurate fuse H can be provided. By changing the width of 3b, a desired cutoff current value can be obtained, and a battery pressure cutoff sensor provided with a highly accurate fuse H can be provided.

【0037】また、遮断路13には、その側縁部13a
に凹凸部を設けて、細幅部13bを形成したため、その構成が簡単で、細幅部13bの膜厚と細幅部13bの幅を変更することによって、所望の遮断電流値が得られて、精度の良好なヒューズHを備えた電池用圧力遮断センサを提供できる。 Since the narrow portion 13b is formed by providing the uneven portion on the surface, the configuration is simple, and a desired breaking current value can be obtained by changing the film thickness of the narrow portion 13b and the width of the narrow portion 13b. It is possible to provide a pressure cutoff sensor for a battery provided with a fuse H having good accuracy. The cut-off path 13 has a side edge 13a. The cut-off path 13 has a side edge 13a.
Since the narrow portion 13b is formed by providing a concave and convex portion on the surface, the structure is simple, and a desired breaking current value can be obtained by changing the film thickness of the narrow portion 13b and the width of the narrow portion 13b. Thus, it is possible to provide a battery pressure cutoff sensor provided with a highly accurate fuse H. Since the narrow portion 13b is formed by providing a concave and convex portion on the surface, the structure is simple, and a desired breaking current value can be obtained by changing the film thickness of the narrow portion 13b and the width of the narrow portion 13b Thus, it is possible to provide a battery pressure cutoff sensor provided with a highly accurate fuse H.

【0038】また、遮断路13上には、絶縁材からなる
保護膜15を形成したため、遮断路13上に埃等の付着
が無く、安全で、確実なヒューズHを備えた電池用圧力
遮断センサを提供できる。
Further, since the protective film 15 made of an insulating material is formed on the cutoff path 13, there is no adhesion of dust and the like on the cutoff path 13, and the pressure cutoff sensor for battery is provided with a safe and reliable fuse H. Can be provided.

【0039】また、絶縁基板11には、応力集中部を設
けたため、絶縁基板11の破断が容易となり、確実な電
路の遮断を行うことができる。
Since the insulating substrate 11 is provided with the stress concentration portion, the insulating substrate 11 is easily broken, and the electric circuit can be reliably cut off.

【0040】また、絶縁基板11の側部11aに切り欠き部11bを設けて応力集中部を形成したため、その構成が簡単で、且つ、破断が容易で安価な絶縁基板11を備えた電池用圧力遮断センサを提供できる。 Further, since the notch portion 11b is provided in the side portion 11a of the insulating substrate 11 to form the stress concentration portion, the pressure for the battery provided with the insulating substrate 11 which has a simple structure, is easy to break, and is inexpensive. An interruption sensor can be provided.

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

【図1】本発明の電池用圧力遮断センサの第1実施例の要部の分解斜視図。 FIG. 1 is an exploded perspective view of a main part of a first embodiment of a battery pressure cutoff sensor according to the present invention.

【図2】本発明の電池用圧力遮断センサの第1実施例の要部の断面図。 FIG. 2 is a cross-sectional view of a main part of a first embodiment of the battery pressure cut-off sensor of the present invention.

【図3】本発明の電池用圧力遮断センサの動作を示す説明図。 FIG. 3 is an explanatory view showing the operation of the battery pressure cutoff sensor of the present invention.

【図4】本発明の電池用圧力遮断センサの動作を示す説明図。 FIG. 4 is an explanatory view showing the operation of the battery pressure cutoff sensor of the present invention.

【図5】本発明の電池用圧力遮断センサの第1実施例の係るヒューズの斜視図。 FIG. 5 is a perspective view of a fuse according to a first embodiment of the battery pressure cut-off sensor of the present invention.

【図6】本発明の電池用圧力遮断センサの第2実施例の係るヒューズの斜視図。 FIG. 6 is a perspective view of a fuse according to a second embodiment of the pressure cutoff sensor for a battery according to the present invention.

【図7】本発明の電池用圧力遮断センサの第2実施例の係るヒューズの斜視図。 FIG. 7 is a perspective view of a fuse according to a second embodiment of the pressure cutoff sensor for a battery according to the present invention.

【符号の説明】 [Explanation of symbols]

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 感圧手段であるダイヤフラム部 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 5g 側面 6 外部電極 6a 電極部 6b 脚部 6c 接続部 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リード 9c 第2リード 9d 電極接続部 9e 固定部 H ヒューズ 11 絶縁基板 11a 側部 11b 応力集中部である切り欠き部 12 電極 13 遮断路 13a 側縁部 13b 細幅部 15 保護膜 T Circuit blockage part of battery of the present invention 2 Terminal part 2a Connecting piece 2b Flat part 2c Opening 3 Insulator 3a Cylindrical part 3b Concave part 3c Vent 3d hole 3e opening 4 Battery lid 4a Bottom plate 4b Ridge 4c Hole D Diaphragm part 4d connecting part 4e convex 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 part 5c pedestal part 5d opening 5e notch part 5f Part 5g Side surface 6 External electrode 6a Electrode part 6b Leg 6c Connection part 8 Rivet 8a Column part 8b Flange part 8c Annular ridge 8d Connection part 9 Lead 9a Rivet connection part 9b First lead 9c Second lead 9d Electrode connection part 9e Fixing portion H Fuse 11 Insulating substrate 11a Side portion 11b Notch portion as stress concentration portion 12 Electrode 13 Cutoff path 13a Side edge portion 3b narrow section 15 protection film

Claims (7)

    【特許請求の範囲】 [Claims]
  1. 【請求項1】 少なくとも一対の電極、及び、この一対の電極間に接続され、所定値以上の電流が流れると電路を遮断する導電体からなる遮断路とを絶縁基板上に形成して構成されたヒューズと、発電素子を収納し、前記ヒューズを取り付けたカバー部材とを備え、前記カバー部材には、このカバー部材の内圧の上昇に応じて変位する感圧手段を設け、前記カバー部材に取り付けられた前記ヒューズの一方の前記電極には、前記発電素子の正極、
    或いは負極が接続され、前記カバー部材の内圧上昇による前記感圧手段の変位によって、前記絶縁基板が破断して、前記遮断路の電路が遮断すると共に、所定値以上の電流が流れると、前記遮断路の電路が遮断するようにしたことを特徴とする電池用圧力遮断センサ。 Alternatively, when a negative electrode is connected and the pressure-sensitive means is displaced due to an increase in the internal pressure of the cover member, the insulating substrate is broken, the electric circuit of the cutoff path is cut off, and a current of a predetermined value or more flows, the cutoff occurs. A pressure cutoff sensor for batteries, characterized in that the electric circuit of the road is cut off. At least one pair of electrodes, and a cutoff path formed of a conductor connected between the pair of electrodes and configured to cut off an electric path when a current of a predetermined value or more flows are formed on an insulating substrate. And a cover member that houses the power generating element and has the fuse attached thereto. The cover member is provided with pressure-sensitive means that is displaced in accordance with an increase in the internal pressure of the cover member, and is attached to the cover member. A positive electrode of the power generating element, At least one pair of electrodes, and a cutoff path formed of a conductor connected between the pair of electrodes and configured to cut off an electric path when a current of a predetermined value or more flows are formed on an insulating substrate. And a cover member The houses the power generating element and has the fuse attached thereto. The cover member is provided with pressure-sensitive means that is displaced in accordance with an increase in the internal pressure of the cover member, and is attached to the cover member. A positive electrode of the power generating element,
    Alternatively, when the negative electrode is connected and the pressure-sensitive means is displaced due to an increase in the internal pressure of the cover member, the insulating substrate is broken, and the electric circuit of the cutoff path is cut off. A pressure interruption sensor for a battery, wherein an electric circuit of a road is interrupted. Alternatively, when the negative electrode is connected and the pressure-sensitive means is displaced due to an increase in the internal pressure of the cover member, the insulating substrate is broken, and the electric circuit of the cutoff path is cut off. A pressure interruption sensor for a battery, wherein an electric circuit of a road is interrupted.
  2. 【請求項2】 前記遮断路には、一部が細幅となった細幅部を設けたことを特徴とする請求項1記載の電池用圧力遮断センサ。 2. The battery pressure interruption sensor according to claim 1, wherein the interruption path is provided with a narrow portion that is partially narrow.
  3. 【請求項3】 前記遮断路には、その側縁部にV字状の傾斜部を設けて、前記細幅部を形成したことを特徴とする請求項2記載の電池用圧力遮断センサ。 3. The pressure-cutoff sensor for a battery according to claim 2, wherein the cutoff path is provided with a V-shaped inclined portion at a side edge thereof to form the narrow portion.
  4. 【請求項4】 前記遮断路には、その側縁部に凹凸部を設けて、前記細幅部を形成したことを特徴とする請求項2記載の電池用圧力遮断センサ。 4. The pressure cutoff sensor for a battery according to claim 2, wherein the cutoff path is provided with an uneven portion at a side edge thereof to form the narrow portion.
  5. 【請求項5】 前記遮断路上には、絶縁材からなる保護膜を形成したことを特徴とする請求項1から4の何れかに記載の電池用圧力遮断センサ。 5. The pressure-cutoff sensor for a battery according to claim 1, wherein a protective film made of an insulating material is formed on the cutoff path.
  6. 【請求項6】 前記絶縁基板には、応力集中部を設けたことを特徴とする請求項1から5の何れかに記載の電池用圧力遮断センサ。 6. The battery pressure cutoff sensor according to claim 1, wherein a stress concentration portion is provided on the insulating substrate.
  7. 【請求項7】 前記絶縁基板の側部に切り欠き部を設け
    て前記応力集中部を形成したことを特徴とする請求項6
    記載の電池用圧力遮断センサ。
    7. A stress concentration portion formed by providing a cutout portion on a side portion of the insulating substrate.
    The pressure cutoff sensor for a battery according to any one of the preceding claims.
JP2001010899A 2001-01-19 2001-01-19 Pressure cutoff sensor for battery Withdrawn JP2002216743A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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JP2001010899A JP2002216743A (en) 2001-01-19 2001-01-19 Pressure cutoff sensor for battery
TW090130673A TW531910B (en) 2001-01-19 2001-12-11 Pressure cutoff sensor for battery
KR10-2002-0003052A KR100443775B1 (en) 2001-01-19 2002-01-18 Pressure breaking sensor for battery

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JP2011258550A (en) * 2010-06-11 2011-12-22 Sb Limotive Co Ltd Secondary battery
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JP2013161789A (en) * 2012-02-01 2013-08-19 Samsung Sdi Co Ltd Secondary battery
JP2013175472A (en) * 2005-12-22 2013-09-05 Lg Chem Ltd Weldless battery pack using press-fit type rivet
CN103779532A (en) * 2012-10-19 2014-05-07 丰田自动车株式会社 Current interrupting device of a sealed battery, sealed battery having current interrupting device, and manufacturing method of sealed battery
US8877361B2 (en) 2009-09-01 2014-11-04 Samsung Sdi Co., Ltd. Rechargeable battery
JP2014220106A (en) * 2013-05-08 2014-11-20 株式会社豊田自動織機 Power storage device
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US9054371B2 (en) 2011-11-17 2015-06-09 Samsung Sdi Co., Ltd. Rechargeable battery
US9246140B2 (en) 2009-07-09 2016-01-26 Samsung Sdi Co., Ltd. Rechargeable battery with a cap assembly having a first tab located outside of the case
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US9246140B2 (en) 2009-07-09 2016-01-26 Samsung Sdi Co., Ltd. Rechargeable battery with a cap assembly having a first tab located outside of the case
US8877361B2 (en) 2009-09-01 2014-11-04 Samsung Sdi Co., Ltd. Rechargeable battery
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US9099732B2 (en) 2010-06-11 2015-08-04 Samsung Sdi Co., Ltd. Rechargeable battery having a fuse with an insulating blocking member
US9478774B2 (en) 2010-12-02 2016-10-25 Samsung Sdi Co., Ltd. Rechargeable battery
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US9634299B2 (en) 2011-09-06 2017-04-25 Samsung Sdi Co., Ltd. Rechargeable battery
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KR100443775B1 (en) 2004-08-09
TW531910B (en) 2003-05-11

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