JP2003109580A - Overcurrent or heating limiting element and battery using this element - Google Patents
Overcurrent or heating limiting element and battery using this elementInfo
- Publication number
- JP2003109580A JP2003109580A JP2001304413A JP2001304413A JP2003109580A JP 2003109580 A JP2003109580 A JP 2003109580A JP 2001304413 A JP2001304413 A JP 2001304413A JP 2001304413 A JP2001304413 A JP 2001304413A JP 2003109580 A JP2003109580 A JP 2003109580A
- Authority
- JP
- Japan
- Prior art keywords
- side terminal
- current
- overcurrent
- battery
- limiting element
- 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.)
- Granted
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
- Thermally Actuated Switches (AREA)
- Protection Of Static Devices (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
(57)【要約】
【課題】 電池パック中に占める電池の割合が多くする
ことにより、体積効率を向上させ、且つ製造工程が煩雑
化するのを防止して、製造コストを低減することができ
る小型サーキットブレーカーを用いた電池を提供するこ
とを目的とする。
【解決手段】 可動アーム２４により、通常時には電流
供給側端子２０から電流取出側端子２５に電流経路が設
けられ一方、異常時には上記電流経路が遮断され或いは
上記電流経路の電流を規制する構造の小型サーキットブ
レーカー１を用いた電池において、筐体における一面に
電流供給側端子２０が設けられ、且つ筐体における電流
供給側端子２０が設けられ面以外の面に電流取出側端子
２５が設けられており、電流供給側端子２０が上記封口
体６に固定されていることを特徴とする過電流又は加熱
制限素子を用いた電池。
(57) [Problem] To increase the ratio of a battery in a battery pack, thereby improving volumetric efficiency and preventing the manufacturing process from being complicated, thereby reducing manufacturing cost. It is an object to provide a battery using a small circuit breaker. SOLUTION: In a normal state, a current path is provided from a current supply side terminal 20 to a current extraction side terminal 25 by a movable arm 24, while the current path is interrupted or a current path of the current path is regulated in an abnormal state. In the battery using the circuit breaker 1, the current supply side terminal 20 is provided on one surface of the housing, and the current extraction side terminal 25 is provided on a surface other than the current supply side terminal 20 of the housing. A battery using an overcurrent or heating limiting element, wherein a current supply terminal 20 is fixed to the sealing body 6.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電流供給側端子
と、電流取出側端子と、筐体内に設けられた可動アーム
とを有し、且つ、通常時にはこの可動アームが上記両端
子と接触して、上記電流供給側端子から上記電流取出側
端子に電流経路が設けられ、異常時には上記可動アーム
が、上記両端子のうち一方の端子と非接触状態となっ
て、上記電流経路が遮断される構造の過電流又は加熱制
限素子に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a current supply side terminal, a current extraction side terminal, and a movable arm provided in a housing, and the movable arm normally contacts both terminals. Then, a current path is provided from the current supply side terminal to the current extraction side terminal, and when there is an abnormality, the movable arm is brought into a non-contact state with one of the terminals and the current path is cut off. It relates to an overcurrent or heating limiting element of the structure.
【０００２】[0002]
【従来の技術】従来より、例えばＶＴＲ等の電気機器に
使用されるニッケル−水素電池、ニッケル−カドミウム
電池、リチウムイオン電池等の電池を保護するための小
型サーキットブレーカーは、数Ａ以上の電流が流れると
作動し、回路を遮断する機能を有するものである。2. Description of the Related Art Conventionally, a small circuit breaker for protecting a battery such as a nickel-hydrogen battery, a nickel-cadmium battery or a lithium-ion battery used in an electric device such as a VTR has a current of several A or more. It has a function of operating when it flows and breaking the circuit.
【０００３】図１８（ａ）（ｂ）は、このような小型サ
ーキットブレーカーの従来例を示す断面図であり、樹脂
５０・５１から成る樹脂ケース（筐体）５４からは２つ
のリード５６・５７が延出されており、これらリード５
６・５７のうち一方のリード５６には可動アーム５５が
一体的に（電気的に接続された状態で）形成されてい
る。この可動アーム５５の先端には接点板５２が固定さ
れており、また、可動アーム５５は、上記樹脂５１に固
定され反転湾曲可能なバイメタル５８により変形可能な
構造となっている。上記リード５６・５７のうち他方の
リード５７には接点５３が取り付けられている。上記構
造の小型サーキットブレーカーにおいて、通常時には、
図１８（ａ）に示すように、接点板５２と接点５３とが
接触して、上記両リード５６・５７間に電流経路が設け
られる一方、異常時には、図１８（ｂ）に示すように、
バイメタル５８が反転湾曲し、接点板５２と接点５３と
が離れた状態となって、上記電流経路が遮断される。FIGS. 18 (a) and 18 (b) are sectional views showing a conventional example of such a small circuit breaker, in which two leads 56, 57 are provided from a resin case (housing) 54 made of resin 50, 51. Has been extended and these leads 5
A movable arm 55 is integrally (in an electrically connected state) formed on one of the leads 56 of 6 and 57. A contact plate 52 is fixed to the tip of the movable arm 55, and the movable arm 55 has a structure which is fixed to the resin 51 and can be deformed by a bimetal 58 which can be bent in a reverse direction. A contact 53 is attached to the other lead 57 of the leads 56 and 57. In the small circuit breaker with the above structure, normally,
As shown in FIG. 18 (a), the contact plate 52 and the contact 53 come into contact with each other to provide a current path between the two leads 56 and 57, while at the time of abnormality, as shown in FIG. 18 (b),
The bimetal 58 is reversely curved, the contact plate 52 and the contact 53 are separated from each other, and the current path is cut off.
【０００４】しかしながら、上記従来の小型サーキット
ブレーカーを用いた場合には、一方のリード５６と電池
の封口体とを接続する一方、他方のリード５７を基板等
に接続する必要があるため、小型サーキットブレーカー
と電池本体部とを備えた電池パックとした場合に、少な
くとも小型サーキットブレーカーの分だけ電池パックが
大きくなるため、電池パック中に占める電池の割合が少
なくなって、体積効率が悪くなるという課題を有してい
た。また、リード５６・５７を折り曲げる等して基板或
いは電池本体部に接続する必要が生じるときもあるた
め、製造工程が煩雑化して、製造コストが上昇するとい
う課題も有していた。However, when the above-mentioned conventional small circuit breaker is used, it is necessary to connect one lead 56 and the battery sealing body while the other lead 57 is connected to the substrate or the like. In the case of a battery pack including a breaker and a battery main body, the battery pack becomes large by at least the size of the small circuit breaker, so that the proportion of the battery in the battery pack is reduced and the volume efficiency is deteriorated. Had. In addition, since it may be necessary to bend the leads 56 and 57 to connect them to the substrate or the battery main body, the manufacturing process becomes complicated and the manufacturing cost increases.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、以上の事情
に鑑みなされたものであって、電池パック中に占める電
池の割合が多くすることにより、体積効率を向上させ、
且つ製造工程が煩雑化するのを防止して、製造コストを
低減することができる過電流又は加熱制限素子及びこの
素子を用いた電池を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and improves volume efficiency by increasing the proportion of batteries in a battery pack.
Moreover, it is an object of the present invention to provide an overcurrent or heating limiting element capable of preventing the manufacturing process from becoming complicated and reducing the manufacturing cost, and a battery using this element.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
に、本発明のうちで請求項１記載の発明は、電流供給側
端子と、電流取出側端子と、筐体内に設けられた可動ア
ームとを有し、且つ、通常時にはこの可動アームが上記
両端子と接触して、上記電流供給側端子から上記電流取
出側端子に電流経路が設けられ、異常時には上記可動ア
ームが、上記両端子のうち一方の端子と非接触状態とな
って、上記電流経路が遮断される構造の過電流又は加熱
制限素子において、上記筐体における一面に上記電流供
給側端子が設けられ、且つ上記筐体における上記電流供
給側端子が設けられ面以外の面に電流取出側端子が設け
られていることを特徴とする。In order to achieve the above-mentioned object, the invention according to claim 1 of the present invention is a current supply side terminal, a current extraction side terminal, and a movable arm provided in a housing. In addition, normally, the movable arm is in contact with both terminals and a current path is provided from the current supply side terminal to the current extraction side terminal. In the overcurrent or heating limiting element having a structure in which the current path is cut off by being in a non-contact state with one of the terminals, the current supply side terminal is provided on one surface of the casing, and It is characterized in that the current supply side terminal is provided and the current extraction side terminal is provided on a surface other than the surface.
【０００７】上記構成であれば、電流供給側端子を直接
電池等の部品に固定し、且つ電流取出側端子を電池の一
方の極の外部端子等として用いることができるので、従
来例の如くリードを折り曲げる等して基板或いは電池に
接続する必要が生じない。したがって、製造工程の煩雑
化を防止することができるので、過電流又は加熱制限素
子を用いた部品（電池パック等）の製造コストを低減す
ることができる。加えて、電流取出側端子を電池の一方
の極の外部端子等として用いることができるので、例え
ば本発明の過電流又は加熱制限素子を電池に用いた場
合、従来の如く小型サーキットブレーカー（過電流又は
加熱制限素子）の分だけ電池パックが大きくなるのを抑
制することができる。したがって、電池パック中に占め
る電池の割合が多くなるので、体積効率を向上させるこ
とができる。With the above construction, the current supply side terminal can be directly fixed to a component such as a battery, and the current extraction side terminal can be used as an external terminal of one pole of the battery or the like. There is no need to fold and connect to a substrate or battery. Therefore, it is possible to prevent the manufacturing process from becoming complicated, so that it is possible to reduce the manufacturing cost of a component (such as a battery pack) using an overcurrent or a heating limiting element. In addition, since the current extraction side terminal can be used as an external terminal of one pole of the battery or the like, for example, when the overcurrent or heating limiting element of the present invention is used in the battery, a small circuit breaker (overcurrent Alternatively, it is possible to prevent the battery pack from increasing in size by the amount of the heating limiting element). Therefore, the proportion of the batteries in the battery pack is increased, so that the volume efficiency can be improved.
【０００８】請求項２記載の発明は、請求項１記載の発
明において、上記筐体における上記電流供給側端子が設
けられた面と対向する面に電流取出側端子が設けられて
いることを特徴とする。電流供給側端子が設けられた面
と対向する面に電流取出側端子が設けられていれば、プ
リント基板等の基板上に電流取出側端子を直接載置する
ことができるので、リフロー法等により簡単に実装する
ことができるので、過電流又は加熱制限素子を用いた部
品（電池パック等）の製造コストを一層低減することが
できる。According to a second aspect of the present invention, in the first aspect of the invention, a current extraction side terminal is provided on a surface of the housing that faces the surface on which the current supply side terminal is provided. And If the current extraction side terminal is provided on the surface opposite to the surface on which the current supply side terminal is provided, the current extraction side terminal can be directly placed on a substrate such as a printed circuit board. Since it can be easily mounted, it is possible to further reduce the manufacturing cost of components (such as a battery pack) using an overcurrent or a heating limiting element.
【０００９】請求項３記載の発明は、請求項１又は２記
載の発明において、上記可動アームがバイメタルから成
る通電方式が用いられることを特徴とする。このような
通電方式のものを用いれば、下記無通電方式のものを用
いた場合に比べて、部品点数を削減することができるの
で、製造コストをより一層低減することができる。A third aspect of the present invention is characterized in that, in the first or second aspect of the present invention, an energization method in which the movable arm is made of bimetal is used. By using such an energizing method, the number of parts can be reduced as compared with the case of using the following non-energizing method, so that the manufacturing cost can be further reduced.
【００１０】請求項４記載の発明は、請求項１又は２記
載の発明において、上記可動アームが別途設けられたバ
イメタルにより作動する無通電方式が用いられることを
特徴とする。上記通電方式のものでは、バイメタルに直
接電流を流すことになるので、可動アームであるバイメ
タル自体が発熱する。したがって、可動アームに流す電
流を低く規制しておく必要がある。これに対して、上記
無通電方式の如くバイメタルを別途設けていれば、可動
アームには熱が伝わり難くなるので、可動アームに流す
電流が高くなるように設定することが可能となる。A fourth aspect of the invention is characterized in that, in the first or second aspect of the invention, a non-energizing system is used in which the movable arm is operated by a bimetal provided separately. In the case of the above-mentioned energization method, since a current is directly applied to the bimetal, the bimetal itself which is the movable arm itself generates heat. Therefore, it is necessary to regulate the current flowing through the movable arm to a low level. On the other hand, if a bimetal is separately provided as in the non-energization method, heat is less likely to be transferred to the movable arm, so that it is possible to set the current flowing through the movable arm to be high.
【００１１】上記目的を達成するために、本発明のうち
で請求項５記載の発明は、内部に電極体が配置された外
装缶と、この外装缶の開口部を封口する封口体と、過電
流又は加熱制限素子とを備え、且つ、この過電流又は加
熱制限素子は、電流供給側端子と、電流取出側端子と、
筐体内に設けられた過電流又は加熱制限部とを有し、こ
の過電流又は加熱制限部により、通常時には上記電流供
給側端子から上記電流取出側端子に電流経路が設けられ
る一方、異常時には上記電流経路が遮断され或いは上記
電流経路の電流を規制する構造の過電流又は加熱制限素
子を用いた電池において、上記筐体における一面に上記
電流供給側端子が設けられ、且つ上記筐体における上記
電流供給側端子が設けられた面以外の面に電流取出側端
子が設けられており、上記電流供給側端子が、上記電極
体の一方の電極と電気的に接続された上記封口体又は外
装缶に固定されていることを特徴とする。上記構成であ
れば、前記請求項１に記載した作用効果を得ることがで
きる。特に、電流供給側端子を、他極の外部端子が設け
られた封口体に固定し、且つ電流取出側端子と他極の外
部端子の先端面が略面一となるように規制すれば、電池
パック中に占める電池の割合がより多くなるので、体積
効率を一層向上させることができる。In order to achieve the above-mentioned object, the invention according to claim 5 of the present invention comprises an outer can in which an electrode body is disposed, a sealing body for sealing the opening of the outer can, and A current or heating limiting element, and this overcurrent or heating limiting element, a current supply side terminal, a current extraction side terminal,
An overcurrent or heating limiting unit provided in the housing, and by this overcurrent or heating limiting unit, a current path is normally provided from the current supply side terminal to the current extraction side terminal, while in the case of an abnormality, In a battery using an overcurrent or heating limiting element having a structure in which the current path is interrupted or the current in the current path is regulated, the current supply side terminal is provided on one surface of the housing, and the current in the housing A current extraction side terminal is provided on a surface other than the surface on which the supply side terminal is provided, and the current supply side terminal is provided on the sealing body or the outer can that is electrically connected to one electrode of the electrode body. It is characterized by being fixed. With the above configuration, it is possible to obtain the function and effect described in the first aspect. In particular, if the current supply side terminal is fixed to the sealing body provided with the external terminal of the other pole and the tip surface of the current extraction side terminal and the external terminal of the other pole are substantially flush, the battery Since the proportion of the battery in the pack is larger, the volume efficiency can be further improved.
【００１２】上記目的を達成するために、本発明のうち
で請求項６記載の発明は、内部に電極体が配置された外
装缶と、この外装缶の開口部を封口する封口体と、過電
流又は加熱制限素子とを備え、且つ、この過電流又は加
熱制限素子は、電流供給側端子と、電流取出側端子と、
筐体内に設けられた過電流又は加熱制限部とを有し、こ
の過電流又は加熱制限部により、通常時には上記電流供
給側端子から上記電流取出側端子に電流経路が設けられ
る一方、異常時には上記電流経路が遮断され或いは上記
電流経路の電流を規制する構造の過電流又は加熱制限素
子を用いた電池において、上記封口体又は上記外装缶が
上記電流供給側端子を構成し、且つ上記筐体における何
れかの面に電流取出側端子が設けられており、上記封口
体又は外装缶が、上記電極体の一方の電極と電気的に接
続されていることを特徴とする。このように、封口体又
は外装缶が電流供給側端子を構成していれば、別途電流
供給側端子を設ける必要がないので、電池の製造コスト
が低くなる。In order to achieve the above-mentioned object, the invention according to claim 6 of the present invention comprises an outer can in which an electrode body is arranged, a sealing body for sealing the opening of the outer can, A current or heating limiting element, and this overcurrent or heating limiting element, a current supply side terminal, a current extraction side terminal,
An overcurrent or heating limiting unit provided in the housing, and by this overcurrent or heating limiting unit, a current path is normally provided from the current supply side terminal to the current extraction side terminal, while in the case of an abnormality, In a battery using an overcurrent or heating limiting element having a structure in which the current path is interrupted or the current in the current path is regulated, the sealing body or the outer can constitutes the current supply side terminal, and in the case A current extraction side terminal is provided on any surface, and the sealing body or the outer can is electrically connected to one electrode of the electrode body. As described above, if the sealing body or the outer can constitutes the current supply side terminal, it is not necessary to separately provide the current supply side terminal, and thus the manufacturing cost of the battery is reduced.
【００１３】請求項７記載の発明は、請求項５又は６記
載の発明において、上記筐体における上記電流供給側端
子が設けられ面と対向する面に電流取出側端子が設けら
れていることを特徴とする。上記構成であれば、前記請
求項２に記載した作用効果を得ることができる。According to a seventh aspect of the present invention, in the fifth or sixth aspect of the present invention, a current output side terminal is provided on a surface of the housing that faces the surface on which the current supply side terminal is provided. Characterize. With the above configuration, it is possible to obtain the operational effect described in the second aspect.
【００１４】請求項８記載の発明は、請求項５〜７記載
の発明において、上記過電流又は加熱制限部が可動アー
ムから成り、この可動アームの一端は上記両端子のうち
一方の端子に固定される一方、上記可動アームの他端で
ある自由端は、通常時には上記両端子のうち他方の端子
と接触して、上記電流供給側端子から上記電流取出側端
子に電流経路が設けられ、異常時には上記両端子のうち
他方の端子とが非接触状態となって、上記電流経路が遮
断される構造のサーキットブレーカーにより過電流又は
加熱制限素子が構成されることを特徴とする。According to an eighth aspect of the invention, in the inventions of the fifth to seventh aspects, the overcurrent or heating limiting portion comprises a movable arm, and one end of the movable arm is fixed to one of the terminals. On the other hand, the free end, which is the other end of the movable arm, normally contacts the other terminal of the both terminals, and a current path is provided from the current supply side terminal to the current extraction side terminal, causing an abnormality. Sometimes, the other terminal of the both terminals is in a non-contact state, and the overcurrent or heating limiting element is constituted by a circuit breaker having a structure in which the current path is interrupted.
【００１５】請求項９記載の発明は、請求項８記載の発
明において、上記可動アームがバイメタルから成る通電
方式が用いられることを特徴とする。上記構成であれ
ば、前記請求項３に記載した作用効果を得ることができ
る。請求項１０記載の発明は、請求項８記載の発明にお
いて、上記可動アームが別途設けられたバイメタルによ
り作動する無通電方式が用いられることを特徴とする。
上記構成であれば、前記請求項４に記載した作用効果を
得ることができる。A ninth aspect of the present invention is characterized in that, in the eighth aspect of the invention, the movable arm uses an energization method made of bimetal. With the above configuration, it is possible to obtain the operational effect described in claim 3. A tenth aspect of the present invention is characterized in that, in the eighth aspect of the present invention, a non-energizing method in which the movable arm is operated by a bimetal provided separately is used.
With the above configuration, it is possible to obtain the operation and effect described in claim 4.
【００１６】請求項１１記載の発明は、請求項５〜７記
載の発明において、上記過電流又は加熱制限部がＰＴＣ
樹脂から成るＰＴＣ素子により過電流又は加熱制限素子
が構成されることを特徴とする。このような構成であれ
ば、通常時には電流供給側端子から電流取出側端子に電
流経路が設けられ一方、異常時には上記電流経路の電流
を規制することができる。The invention according to claim 11 is the invention according to claims 5 to 7, wherein the overcurrent or heating limiting portion is a PTC.
The PTC element made of resin constitutes the overcurrent or heat limiting element. With such a configuration, the current path is normally provided from the current supply side terminal to the current extraction side terminal, while the current in the current path can be regulated when an abnormality occurs.
【００１７】[0017]
【発明の実施の形態】本発明の実施の形態を、図１〜図
１７に基づいて、以下に説明する。図１は小型サーキッ
トブレーカーにおける通常状態を示す断面図、図２は小
型サーキットブレーカーにおける異常状態を示す断面
図、図３は図１及び図２の小型サーキットブレーカーの
作動状態を示す概念図、図４は図１及び図２の小型サー
キットブレーカーを用いたリチウムイオン電池の断面
図、図５は小型サーキットブレーカーの変形例における
通常状態を示す断面図、図６は小型サーキットブレーカ
ーの変形例における異常状態を示す断面図、図７は図５
及び図６の小型サーキットブレーカーの作動状態を示す
概念図、図８は小型サーキットブレーカーの変形例にお
ける作動状態を示す概念図、図９は小型サーキットブレ
ーカーの他の変形例における作動状態を示す概念図、図
１０は小型サーキットブレーカーによって電解液の注液
口を封止する場合の状態を示す断面図、図１１は小型サ
ーキットブレーカーの固定位置を変えた場合の状態を示
す断面図、図１２は電池の端子を変形して電流取出位置
を変える場合の状態を示す断面図、図１３は図１２の電
池における電流取出位置を示す平面図、図１４は過電流
又は加熱制限素子としてＰＴＣ素子を用いた場合の断面
図、図１５は小型サーキットブレーカーの更に他の変形
例における作動状態を示す概念図、図１６は薄型電池の
正面図、図１７は図１６の薄型電池を電池パックとした
ときの断面図である。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to FIGS. 1 is a sectional view showing a normal state of the small circuit breaker, FIG. 2 is a sectional view showing an abnormal state of the small circuit breaker, FIG. 3 is a conceptual diagram showing an operating state of the small circuit breaker of FIGS. 1 and 2, and FIG. 1 is a cross-sectional view of a lithium ion battery using the small circuit breaker of FIGS. 1 and 2, FIG. 5 is a cross-sectional view showing a normal state in a modification of the small circuit breaker, and FIG. 6 is an abnormal state in a modification of the small circuit breaker. FIG. 7 is a cross-sectional view shown in FIG.
6 is a conceptual diagram showing an operating state of the small circuit breaker in FIG. 6, FIG. 8 is a conceptual diagram showing an operating state in a modified example of the small circuit breaker, and FIG. 9 is a conceptual diagram showing an operating state in another modified example of the small circuit breaker. FIG. 10 is a sectional view showing a state in which the electrolyte injection port is sealed by a small circuit breaker, FIG. 11 is a sectional view showing a state in which the fixing position of the small circuit breaker is changed, and FIG. 12 is a battery. FIG. 13 is a cross-sectional view showing a state in which the terminal is deformed to change the current extraction position, FIG. 13 is a plan view showing the current extraction position in the battery of FIG. 12, and FIG. 14 is a PTC element used as an overcurrent or heating limiting element. FIG. 15 is a cross-sectional view of a case, FIG. 15 is a conceptual view showing an operating state in still another modified example of the small circuit breaker, FIG. 16 is a front view of a thin battery, and FIG. 16 thin battery of a cross-sectional view when a battery pack.
【００１８】図４に示すように、本発明のリチウムイオ
ン電池は、筒状の外装缶８を有しており、この外装缶８
内には、アルミニウム合金から成る芯体にＬｉＣｏＯ2
を主体とする活物質層が形成された正極と、銅から成る
芯体に黒鉛を主体とする活物質層が形成された負極と、
これら両電極を離間するセパレータとから成る偏平渦巻
き状の電極体７が収納される。また、上記外装缶８内に
は、エチレンカーボネート（ＥＣ）とジメチルカーボネ
ート（ＤＭＣ）とが体積比で４：６の割合で混合された
混合溶媒に、ＬｉＰＦ6 が１Ｍ（モル／リットル）の割
合で溶解された電解液が注入されている。更に、上記外
装缶８の開放孔にはアルミニウム合金から成る封口体６
（厚さ：１ｍｍ）がレーザー溶接されており、これによ
って電池が封口される。As shown in FIG. 4, the lithium ion battery of the present invention has a cylindrical outer can 8.
Inside the core body made of aluminum alloy, LiCoO 2
A positive electrode on which an active material layer mainly composed of is formed, and a negative electrode on which an active material layer mainly composed of graphite is formed on a core body made of copper,
A flat spiral electrode body 7 including a separator that separates these two electrodes is housed. In the outer can 8, the proportion of LiPF 6 is 1 M (mol / liter) in a mixed solvent of ethylene carbonate (EC) and dimethyl carbonate (DMC) in a volume ratio of 4: 6. The electrolytic solution dissolved in is injected. Further, the opening hole of the outer can 8 has a sealing body 6 made of an aluminum alloy.
(Thickness: 1 mm) is laser-welded to seal the battery.
【００１９】上記封口体６は、ガスケット１１、絶縁板
１２及び導電板１４と共に、注液孔１８を有する挟持部
材１６により挟持されており、この挟持部材１６上には
負極端子キャップ１０が固定されている。また、上記負
極から延設される負極タブ１５は、上記導電板１４と挟
持部材１６とを介して、上記負極端子キャップ１０と電
気的に接続される一方、上記正極は正極タブ１７を介し
て、上記外装缶８と電気的に接続されている。尚、図４
中の２は樹脂であり、この樹脂２の剥がれを防止すると
共に外部短絡を防止するためのラベルが、上記外装缶８
の側面に設けられている。The sealing body 6 is sandwiched by a sandwiching member 16 having a liquid injection hole 18 together with the gasket 11, the insulating plate 12 and the conductive plate 14, and the negative electrode terminal cap 10 is fixed on the sandwiching member 16. ing. The negative electrode tab 15 extending from the negative electrode is electrically connected to the negative electrode terminal cap 10 through the conductive plate 14 and the sandwiching member 16, while the positive electrode is through the positive electrode tab 17. , And is electrically connected to the outer can 8. Incidentally, FIG.
2 is a resin, and the label for preventing peeling of the resin 2 and for preventing an external short circuit is provided on the outer can 8
It is provided on the side of.
【００２０】ここで、上記封口体６の一部には凹部３が
形成されており、この凹部３には小型サーキットブレー
カー１が固定されている。この小型サーキットブレーカ
ー１における通常状態での構成は、図１に示すように、
上記封口体６とスポット溶接法により固定される長尺の
電流供給側端子２０を有しており、この電流供給側端子
２０上には、反転湾曲可能なバイメタル２２がフレーム
２１を介して固定されている。また、上記電流供給側端
子２０上には電流供給側端子２０と電気的に接続された
接点２３が設けられている。一方、上記電流供給側端子
２０と対向する面には、電池の正極端子を兼用する電流
取出側端子２５が設けられており、この電流取出側端子
２５の一端近傍には可動アーム２４が取り付けられてい
る。この可動アーム２４の先端には、上記接点２３と対
向して、接点板２４ａが設けられている。上記構成によ
り、電池内の正極と電気的に接続された封口体６と電流
取出側端子２５とは、接点２３、可動アーム２４を介し
て電気的に接続されて電流経路が設けられる。この状態
の理解を容易とするため、図３に概念図を示す。図３に
おいて、可動アーム２４とバイメタル２２とが実線で示
されているのが、通常状態である。尚、図１中、２６、
２７、２８は樹脂であり、筐体の一部を構成している。Here, a recess 3 is formed in a part of the sealing body 6, and the small circuit breaker 1 is fixed in the recess 3. The configuration of the small circuit breaker 1 in the normal state is as shown in FIG.
It has a long current supply side terminal 20 which is fixed to the sealing body 6 by a spot welding method. On the current supply side terminal 20, a reversible curable bimetal 22 is fixed via a frame 21. ing. A contact 23 electrically connected to the current supply side terminal 20 is provided on the current supply side terminal 20. On the other hand, on the surface facing the current supply side terminal 20, a current extraction side terminal 25 which also serves as a positive electrode terminal of the battery is provided, and a movable arm 24 is attached near one end of the current extraction side terminal 25. ing. A contact plate 24a is provided at the tip of the movable arm 24 so as to face the contact 23. With the above configuration, the sealing body 6 electrically connected to the positive electrode in the battery and the current extraction side terminal 25 are electrically connected via the contact point 23 and the movable arm 24 to provide a current path. To facilitate understanding of this state, a conceptual diagram is shown in FIG. In FIG. 3, the movable arm 24 and the bimetal 22 are shown by solid lines in a normal state. Incidentally, in FIG. 1, 26,
Numerals 27 and 28 are resins and form a part of the housing.
【００２１】一方、上記小型サーキットブレーカー１に
おける異常状態（電池温度が約７０℃以上となった状
態）での構成は、図２に示すように、バイメタル２２が
反転湾曲して、可動アーム２４の接点板２４ａと接点２
３とが離れた状態となっている。これにより、電流供給
側端子２０と電流取出側端子２５との間の電流経路が遮
断される。上記図３において、可動アーム２４とバイメ
タル２２とが二点鎖線で示されているのが、異常状態で
ある。On the other hand, in the structure of the small circuit breaker 1 in the abnormal state (the state in which the battery temperature is about 70 ° C. or higher), as shown in FIG. Contact plate 24a and contact 2
3 and 3 are separated from each other. As a result, the current path between the current supply side terminal 20 and the current extraction side terminal 25 is cut off. In FIG. 3, the movable arm 24 and the bimetal 22 are indicated by a chain double-dashed line in an abnormal state.
【００２２】上記構造のリチウムイオン電池を、以下の
ようにして作製した。先ず、正極活物質としてのＬｉＣ
ｏＯ2 を９０質量％と、導電剤としてのカーボンブラッ
クを５質量％と、結着剤としてのポリフッ化ビニリデン
を５質量％と、溶剤としてのＮ−メチル−２−ピロリド
ン（ＮＭＰ）溶液とを混合してスラリーを調製した後、
上記スラリーを正極集電体としてのアルミニウム箔の両
面に塗布した。その後、溶剤を乾燥し、ローラーで所定
の厚みにまで圧縮した後、所定の幅及び長さになるよう
に切断し、更にアルミニウム合金製の正極集電タブを溶
接した。A lithium ion battery having the above structure was produced as follows. First, LiC as a positive electrode active material
90% by mass of oO 2 , 5% by mass of carbon black as a conductive agent, 5% by mass of polyvinylidene fluoride as a binder, and an N-methyl-2-pyrrolidone (NMP) solution as a solvent. After mixing and preparing the slurry,
The above slurry was applied to both sides of an aluminum foil as a positive electrode current collector. After that, the solvent was dried, compressed with a roller to a predetermined thickness, cut into a predetermined width and length, and a positive electrode current collector tab made of an aluminum alloy was welded.
【００２３】これと並行して、負極活物質としての黒鉛
粉末を９５質量％と、結着剤としてのポリフッ化ビニリ
デンを５質量％と、溶剤としてのＮＭＰ溶液とを混合し
てスラリーを調製した後、上記スラリーを負極集電体と
しての銅箔の両面に塗布した。その後、溶剤を乾燥し、
ローラーで所定の厚みにまで圧縮した後、所定の幅及び
長さになるように切断し、更にニッケル製の負極集電タ
ブを溶接した。In parallel with this, 95% by mass of graphite powder as a negative electrode active material, 5% by mass of polyvinylidene fluoride as a binder, and an NMP solution as a solvent were mixed to prepare a slurry. Then, the above slurry was applied to both surfaces of a copper foil as a negative electrode current collector. Then dry the solvent,
After being compressed to a predetermined thickness with a roller, it was cut into a predetermined width and length, and a nickel negative electrode current collecting tab was welded.
【００２４】次に、上記正極と負極とをポリエチレン製
微多孔膜から成るセパレータを介して巻回して偏平渦巻
き状の電極体７を作製した後、この電極体７を外装缶８
内に挿入した後、封口体６、ガスケット１１、絶縁板１
２及び導電板１４を挟持部材１６により挟持した。Next, the positive electrode and the negative electrode are wound around a separator made of a polyethylene microporous film to produce a flat spiral electrode body 7, and then the electrode body 7 is packaged.
After inserting into the inside, the sealing body 6, the gasket 11, the insulating plate 1
2 and the conductive plate 14 were sandwiched by the sandwiching member 16.
【００２５】しかる後、外装缶８と封口体６とをレーザ
ー溶接した後、注液孔１８から外装缶８内に電解液を注
入し、更に挟持部材１６上に負極端子キャップ１０を固
定した。この後、インサート成形法により作製された小
型サーキットブレーカー１を封口体６の凹部３にスポッ
ト溶接法により固定した後、外部端子を除き、樹脂２に
て封口体６の上面を覆うことによりリチウムイオン電池
を作製した。Then, after the outer can 8 and the sealing body 6 were laser-welded, the electrolytic solution was injected into the outer can 8 through the liquid injection hole 18, and the negative electrode terminal cap 10 was fixed on the holding member 16. After that, the small circuit breaker 1 manufactured by the insert molding method is fixed to the concave portion 3 of the sealing body 6 by spot welding, and then the external terminal is removed and the upper surface of the sealing body 6 is covered with the resin 2 to remove the lithium ion. A battery was made.
【００２６】〔その他の形態〕
（１）小型サーキットブレーカー１としては上記無通電
方式のものに限定するものではなく、図５〜図７に示す
ように、上記の如くバイメタルを別途設けるのではな
く、可動アーム２４自体がバイメタルから成るような通
電方式であっても良い。[Other Embodiments] (1) The small circuit breaker 1 is not limited to the non-energizing type circuit breaker, and as shown in FIGS. 5 to 7, a bimetal is not separately provided as described above. Alternatively, the movable arm 24 itself may be made of a bimetal.
【００２７】（２）小型サーキットブレーカー１の可動
アーム２４は、電流取出側端子２５に固定される構造に
限定するものではなく、図８に示すように、内部端子２
９を介して（或いは、直接に）電流供給側端子２０と固
定される構造であっても良い。
（３）小型サーキットブレーカー１の可動アーム２４の
自由端に設けられる接点板２４ａは１つに限定するもの
ではなく、図９に示すように、電流取出側端子２５から
突出した凸部２５ａと樹脂３０から突出した凸部３０ａ
との間に可動アーム２４を挟持し、この可動アーム２４
の両端に接点板２４ａをそれぞれ設けるような構造であ
っても良い。(2) The movable arm 24 of the small circuit breaker 1 is not limited to the structure fixed to the current extraction side terminal 25, but as shown in FIG.
The structure may be such that it is fixed to the current supply side terminal 20 via (or directly). (3) The contact plate 24a provided at the free end of the movable arm 24 of the small circuit breaker 1 is not limited to one, and as shown in FIG. Projection 30a protruding from 30
The movable arm 24 is sandwiched between
The structure may be such that the contact plates 24a are provided at both ends of each.
【００２８】（４）図１０に示すように、負極キャップ
１０内に電解液の注液口１８を設けないで、封口体６に
別途注液口１８を形成するような場合には、小型サーキ
ットブレーカー１の下面に設けられ電解液の漏れを防止
するゴム３２を注液口１８上に配置するようにして、小
型サーキットブレーカー１により注液孔１８を塞ぐ構成
としても良い。
（５）小型サーキットブレーカー１の固定位置は封口体
６に限定するものではなく、図１１に示すように、外装
缶８における封口体６と対向する面であっても良い。(4) As shown in FIG. 10, when the electrolyte injection port 18 is not provided in the negative electrode cap 10 and the injection port 18 is separately formed in the sealing body 6, a small circuit is used. A rubber 32, which is provided on the lower surface of the breaker 1 and prevents the electrolyte from leaking, may be disposed on the liquid injection port 18, and the small circuit breaker 1 may close the liquid injection hole 18. (5) The fixed position of the small circuit breaker 1 is not limited to the sealing body 6, and may be a surface of the outer can 8 facing the sealing body 6 as shown in FIG.
【００２９】（６）図１２に示すように、小型サーキッ
トブレーカー１以外の端子を延設すれば、樹脂２のモー
ルド状態を変えることにより、電流取出位置を変えるこ
とが可能となる。具体的には、図１２の実線のように樹
脂２をモールドすると、図１３（ａ）に示すような電流
取出位置３４・３５となり、図１２の二点鎖線のように
樹脂２をモールドすると、図１３（ｂ）に示すような電
流取出位置３４・３５となる。加えて、樹脂２をモール
ドすることにより、電池が落下等して電池に外力が加え
られた場合であっても、出力端子が保護される。(6) By extending the terminals other than the small circuit breaker 1 as shown in FIG. 12, it is possible to change the current extraction position by changing the molding state of the resin 2. Specifically, when the resin 2 is molded as shown by the solid line in FIG. 12, the current extraction positions 34 and 35 are as shown in FIG. 13A, and when the resin 2 is molded as shown by the chain double-dashed line in FIG. The current extraction positions 34 and 35 are as shown in FIG. In addition, by molding the resin 2, the output terminal is protected even when the battery is dropped or an external force is applied to the battery.
【００３０】（７）過電流又は加熱制限素子としては小
型サーキットブレーカー１に限定するものではなく、図
１４に示すように、電流取出側端子２５と電流供給側端
子２０との間にＰＴＣ樹脂層３６が形成されたＰＴＣ素
子であっても良いし、また、図示はしないがヒューズで
あっても良い。
（８）上記構成の如く電流供給側端子２０を別途設ける
必要はなく、図１５に示すように、封口体６が電流供給
側端子２０を兼用する構造であっても良く、また図示は
しないが、外装缶８が電流供給側端子２０を兼用する構
造であっても良い。また、この場合、可動アームは、図
１５に示すように、電流供給側端子２０側に固定する構
造に限定するものではなく、封口体６又は外装缶８に固
定する構造であっても良い。(7) The overcurrent or heating limiting element is not limited to the small circuit breaker 1, but as shown in FIG. 14, a PTC resin layer is provided between the current extraction side terminal 25 and the current supply side terminal 20. The PTC element 36 may be formed, or a fuse (not shown) may be used. (8) It is not necessary to separately provide the current supply side terminal 20 as in the above configuration, and as shown in FIG. 15, the sealing body 6 may have a structure that also serves as the current supply side terminal 20, and although not shown. The outer can 8 may also serve as the current supply side terminal 20. Further, in this case, the movable arm is not limited to the structure fixed to the current supply side terminal 20 side as shown in FIG. 15, and may be a structure fixed to the sealing body 6 or the outer can 8.
【００３１】（９）電池としては、上記円筒型の電池に
限定するものではなく、図１６に示すように、電極体
（図示せず）が内部に収納されたラミネート外装体４０
の一端から、正極集電タブ４１と負極集電タブ４２とが
突出している構造の薄型電池にも適用し得る。このよう
な薄型電池では、図１７に示すように、Ｕ字状に折り曲
げられた負極集電タブ４２に小型サーキットブレーカー
１がスポット溶接され、この小型サーキットブレーカー
１は、出力リード４４と電気的に接続された基板４３に
リフロー半田される構造である。そして、その製造方法
は、基板４３に小型サーキットブレーカー１をリフロー
半田した後、この小型サーキットブレーカー１付き基板
４３を負極集電タブ４２にスポット溶接し、最後に負極
集電タブ４２をＵ字状に折り曲げることにより行う。
尚、負極集電タブ４２に小型サーキットブレーカー１を
接続するような構造に限定するものではなく、正極集電
タブ４１に小型サーキットブレーカー１を接続するよう
な構造であっても良いことは勿論である。
（１０）電流取出側端子は電流供給側端子の対向面に設
ける構造に限定するものではなく、電流供給側端子が設
けられていない面に設ける構造であっても良い。(9) The battery is not limited to the cylindrical battery described above, but as shown in FIG. 16, a laminated outer casing 40 having an electrode body (not shown) housed therein is provided.
It can also be applied to a thin battery having a structure in which the positive electrode current collecting tab 41 and the negative electrode current collecting tab 42 project from one end of the. In such a thin battery, as shown in FIG. 17, the small circuit breaker 1 is spot-welded to the negative electrode current collector tab 42 bent in a U shape, and the small circuit breaker 1 is electrically connected to the output lead 44. This is a structure for reflow soldering to the connected substrate 43. Then, the manufacturing method is such that after the small circuit breaker 1 is reflow-soldered to the substrate 43, the substrate 43 with the small circuit breaker 1 is spot-welded to the negative electrode current collecting tab 42, and finally the negative electrode current collecting tab 42 is U-shaped. It is done by bending it into two.
Note that the structure is not limited to the structure in which the small-sized circuit breaker 1 is connected to the negative electrode current collecting tab 42, and it goes without saying that the structure may be such that the small-sized circuit breaker 1 is connected to the positive electrode current collecting tab 41. is there. (10) The current extraction side terminal is not limited to the structure provided on the facing surface of the current supply side terminal, but may be provided on the surface where the current supply side terminal is not provided.
【００３２】[0032]
【発明の効果】以上説明したように、本発明によれば、
電池パック中に占める電池の割合が多くなるので、体積
効率を向上させることができ、且つ製造工程が煩雑化す
るのが抑制されるので、製造コストを低減することがで
きるといった優れた効果を奏する。As described above, according to the present invention,
Since the proportion of the battery in the battery pack is large, the volume efficiency can be improved, and the manufacturing process can be prevented from becoming complicated, which is an excellent effect that the manufacturing cost can be reduced. .
【図１】小型サーキットブレーカーにおける通常状態を
示す断面図。FIG. 1 is a cross-sectional view showing a normal state in a small circuit breaker.
【図２】小型サーキットブレーカーにおける異常状態を
示す断面図。FIG. 2 is a sectional view showing an abnormal state in a small circuit breaker.
【図３】図１及び図２の小型サーキットブレーカーの作
動状態を示す概念図。FIG. 3 is a conceptual diagram showing an operating state of the small circuit breaker of FIGS. 1 and 2.
【図４】図１及び図２の小型サーキットブレーカーを用
いたリチウムイオン電池の断面図。FIG. 4 is a cross-sectional view of a lithium ion battery using the small circuit breaker of FIGS. 1 and 2.
【図５】小型サーキットブレーカーの変形例における通
常状態を示す断面図。FIG. 5 is a cross-sectional view showing a normal state in a modification of the small circuit breaker.
【図６】小型サーキットブレーカーの変形例における異
常状態を示す断面図。FIG. 6 is a cross-sectional view showing an abnormal state in a modification of the small circuit breaker.
【図７】図５及び図６の小型サーキットブレーカーの作
動状態を示す概念図。FIG. 7 is a conceptual diagram showing an operating state of the small circuit breaker shown in FIGS. 5 and 6;
【図８】小型サーキットブレーカーの変形例における作
動状態を示す概念図。FIG. 8 is a conceptual diagram showing an operating state in a modified example of the small circuit breaker.
【図９】小型サーキットブレーカーの他の変形例におけ
る作動状態を示す概念図。FIG. 9 is a conceptual diagram showing an operating state of another modification of the small circuit breaker.
【図１０】小型サーキットブレーカーによって電解液の
注液口を封止する場合の状態を示す断面図。FIG. 10 is a cross-sectional view showing a state in which the electrolyte solution inlet is sealed by a small circuit breaker.
【図１１】小型サーキットブレーカーの固定位置を変え
た場合の状態を示す断面図。FIG. 11 is a sectional view showing a state in which the fixing position of the small circuit breaker is changed.
【図１２】電池の端子を変形して電流取出位置を変える
場合の状態を示す断面図。FIG. 12 is a cross-sectional view showing a state in which the terminal of the battery is deformed to change the current extraction position.
【図１３】図１２の電池における電流取出位置を示す平
面図。13 is a plan view showing a current extraction position in the battery of FIG.
【図１４】過電流又は加熱制限素子としてＰＴＣ素子を
用いた場合の断面図。FIG. 14 is a sectional view when a PTC element is used as an overcurrent or heating limiting element.
【図１５】小型サーキットブレーカーの更に他の変形例
における作動状態を示す概念図。FIG. 15 is a conceptual diagram showing an operating state in still another modified example of the small circuit breaker.
【図１６】薄型電池の正面図。FIG. 16 is a front view of a thin battery.
【図１７】図１６の薄型電池を電池パックとしたときの
断面図。FIG. 17 is a cross-sectional view when the thin battery of FIG. 16 is used as a battery pack.
【図１８】従来の小型サーキットブレーカーの断面図。FIG. 18 is a cross-sectional view of a conventional small circuit breaker.
７：電極体 ８：外装缶 ６：封口体 ２０：電流供給側端子 ２２：バイメタル ２４：可動アーム ２５：電流取出側端子 7: Electrode body 8: Exterior can 6: Sealing body 20: Current supply side terminal 22: Bimetal 24: Movable arm 25: Current extraction side terminal
───────────────────────────────────────────────────── フロントページの続き (72)発明者 渡部 厚司 大阪府守口市京阪本通２丁目５番５号 三 洋電機株式会社内 (72)発明者 長谷川 隆史 大阪府守口市京阪本通２丁目５番５号 三 洋電機株式会社内 Ｆターム(参考） 5G003 BA01 FA02 FA04 GA09 5G041 AA13 BB11 DC01 DC07 5G053 AA01 AA14 BA01 BA07 CA01 5H022 AA04 AA09 BB03 BB06 BB11 BB24 CC04 CC06 CC10 EE00 KK01 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Atsushi Watanabe 2-5-3 Keihan Hondori, Moriguchi City, Osaka Prefecture Within Yo Denki Co., Ltd. (72) Inventor Takashi Hasegawa 2-5-3 Keihan Hondori, Moriguchi City, Osaka Prefecture Within Yo Denki Co., Ltd. F-term (reference) 5G003 BA01 FA02 FA04 GA09 5G041 AA13 BB11 DC01 DC07 5G053 AA01 AA14 BA01 BA07 CA01 5H022 AA04 AA09 BB03 BB06 BB11 BB24 CC04 CC06 CC10 EE00 KK01
Claims (11)
筐体内に設けられた可動アームとを有し、且つ、通常時
にはこの可動アームが上記両端子と接触して、上記電流
供給側端子から上記電流取出側端子に電流経路が設けら
れ、異常時には上記可動アームが、上記両端子のうち一
方の端子と非接触状態となって、上記電流経路が遮断さ
れる構造の過電流又は加熱制限素子において、 上記筐体における一面に上記電流供給側端子が設けら
れ、且つ上記筐体における上記電流供給側端子が設けら
れ面以外の面に電流取出側端子が設けられていることを
特徴とする過電流又は加熱制限素子。1. A current supply side terminal, a current extraction side terminal,
A movable arm provided in the housing, and the movable arm normally contacts the both terminals to provide a current path from the current supply side terminal to the current extraction side terminal. In the overcurrent or heating limiting element having a structure in which the movable arm is in a non-contact state with one of the two terminals and the current path is cut off, the current supply side terminal is provided on one surface of the housing. And a current extraction side terminal is provided on a surface other than the surface on which the current supply side terminal is provided in the housing, the overcurrent or heating limiting element.
設けられた面と対向する面に電流取出側端子が設けられ
ている、請求項１記載の過電流又は加熱制限素子。2. The overcurrent or heating limiting element according to claim 1, wherein a current extraction side terminal is provided on a surface of the housing facing the surface on which the current supply side terminal is provided.
電方式が用いられる、請求項１又は２記載の過電流又は
加熱制限素子。3. The overcurrent or heating limiting element according to claim 1, wherein an energization method in which the movable arm is made of bimetal is used.
タルにより作動する無通電方式が用いられる、請求項１
又は２記載の過電流又は加熱制限素子。4. A non-energizing system in which the movable arm is operated by a bimetal provided separately is used.
Or the overcurrent or heating limiting element according to 2.
の外装缶の開口部を封口する封口体と、過電流又は加熱
制限素子とを備え、且つ、この過電流又は加熱制限素子
は、電流供給側端子と、電流取出側端子と、筐体内に設
けられた過電流又は加熱制限部とを有し、この過電流又
は加熱制限部により、通常時には上記電流供給側端子か
ら上記電流取出側端子に電流経路が設けられる一方、異
常時には上記電流経路が遮断され或いは上記電流経路の
電流を規制する構造の過電流又は加熱制限素子を用いた
電池において、 上記筐体における一面に上記電流供給側端子が設けら
れ、且つ上記筐体における上記電流供給側端子が設けら
れた面以外の面に電流取出側端子が設けられており、上
記電流供給側端子が、上記電極体の一方の電極と電気的
に接続された上記封口体又は外装缶に固定されているこ
とを特徴とする過電流又は加熱制限素子を用いた電池。5. An outer can in which an electrode body is arranged, a sealing body for sealing an opening of the outer can, and an overcurrent or heating limiting element, and the overcurrent or heating limiting element is provided. , The current supply side terminal, the current extraction side terminal, and the overcurrent or heating limiting section provided in the housing, by the overcurrent or heating limiting section, the current extraction from the current supply side terminal in normal times While a current path is provided on the side terminal, in the event of an abnormality, the current path is cut off or a battery using an overcurrent or heating limiting element of a structure that regulates the current of the current path is used. A side terminal is provided, and a current extraction side terminal is provided on a surface of the casing other than the surface on which the current supply side terminal is provided, and the current supply side terminal is one electrode of the electrode body. Electrically connected Peracetic current or battery using the heating limiting element, characterized in that it is fixed to the sealing body or outer can.
の外装缶の開口部を封口する封口体と、過電流又は加熱
制限素子とを備え、且つ、この過電流又は加熱制限素子
は、電流取出側端子と、筐体内に設けられた過電流又は
加熱制限部とを有し、この過電流又は加熱制限部によ
り、通常時には電流供給側端子から上記電流取出側端子
に電流経路が設けられる一方、異常時には上記電流経路
が遮断され或いは上記電流経路の電流を規制する構造の
過電流又は加熱制限素子を用いた電池において、 上記封口体又は上記外装缶が上記電流供給側端子を構成
し、且つ上記筐体における何れかの面に電流取出側端子
が設けられており、上記封口体又は外装缶が、上記電極
体の一方の電極と電気的に接続されていることを特徴と
する過電流又は加熱制限素子を用いた電池。6. An outer can having an electrode body arranged therein, a sealing body for sealing an opening of the outer can, and an overcurrent or heating limiting element, and the overcurrent or heating limiting element is provided. A current extraction side terminal and an overcurrent or heating limiting section provided in the housing, and the overcurrent or heating limiting section normally provides a current path from the current supply side terminal to the current extraction side terminal. On the other hand, in a battery using an overcurrent or heating limiting element having a structure in which the current path is interrupted or the current in the current path is regulated in the event of an abnormality, the sealing body or the outer can constitutes the current supply side terminal. In addition, a current extraction side terminal is provided on any surface of the housing, and the sealing body or the outer can is electrically connected to one electrode of the electrode body. Current or heating limiter Battery using.
設けられ面と対向する面に電流取出側端子が設けられて
いる、請求項５又は６記載の過電流又は加熱制限素子を
用いた電池。7. The battery using the overcurrent or heating limiting element according to claim 5, wherein a current output side terminal is provided on a surface of the housing facing the surface on which the current supply side terminal is provided. .
から成り、この可動アームの一端は上記両端子のうち一
方の端子に固定される一方、上記可動アームの他端であ
る自由端は、通常時には上記両端子のうち他方の端子と
接触して、上記電流供給側端子から上記電流取出側端子
に電流経路が設けられ、異常時には上記両端子のうち他
方の端子とが非接触状態となって、上記電流経路が遮断
される構造のサーキットブレーカーにより過電流又は加
熱制限素子が構成される、請求項５〜７記載の過電流又
は加熱制限素子を用いた電池。8. The overcurrent or heating limiting section is composed of a movable arm, and one end of the movable arm is fixed to one terminal of the both terminals, while the other end of the movable arm is a free end. Normally, it contacts the other terminal of the both terminals, and a current path is provided from the current supply side terminal to the current extraction side terminal, and when there is an abnormality, the other terminal of both terminals becomes non-contact state. The battery using the overcurrent or heating limiting element according to any one of claims 5 to 7, wherein the circuit breaker having a structure in which the current path is cut off constitutes the overcurrent or heating limiting element.
電方式が用いられる、請求項８記載の過電流又は加熱制
限素子を用いた電池。9. The battery using the overcurrent or heating limiting element according to claim 8, wherein an energization method in which the movable arm is made of bimetal is used.
メタルにより作動する無通電方式が用いられる、請求項
８記載の過電流又は加熱制限素子を用いた電池。10. The battery using the overcurrent or heating limiting element according to claim 8, wherein a non-energized system in which the movable arm is operated by a bimetal provided separately is used.
脂から成るＰＴＣ素子により過電流又は加熱制限素子が
構成される、請求項５〜７記載の過電流又は加熱制限素
子を用いた電池。11. The battery using the overcurrent or heating limiting element according to claim 5, wherein the overcurrent or heating limiting element is constituted by a PTC element made of PTC resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001304413A JP4056239B2 (en) | 2001-09-28 | 2001-09-28 | Overcurrent or heating limiting element and battery using this element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001304413A JP4056239B2 (en) | 2001-09-28 | 2001-09-28 | Overcurrent or heating limiting element and battery using this element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003109580A true JP2003109580A (en) | 2003-04-11 |
| JP4056239B2 JP4056239B2 (en) | 2008-03-05 |
Family
ID=19124345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001304413A Expired - Fee Related JP4056239B2 (en) | 2001-09-28 | 2001-09-28 | Overcurrent or heating limiting element and battery using this element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4056239B2 (en) |
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| WO2005110825A1 (en) * | 2004-05-19 | 2005-11-24 | Bridgestone Corporation | Sealing pump-up device and pump-up device |
| JP2005347254A (en) * | 2004-05-31 | 2005-12-15 | Samsung Sdi Co Ltd | Secondary battery |
| CN102800525A (en) * | 2011-05-27 | 2012-11-28 | 大冢科技株式会社 | Circuit breaker and battery pack including the same |
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| KR101386896B1 (en) * | 2012-09-21 | 2014-04-18 | 자화전자(주) | Battery protection device using PTC |
| CN103999180A (en) * | 2011-12-22 | 2014-08-20 | 小松电子部品有限公司 | A circuit breaker and a safety circuit and a secondary battery pack equipped with the circuit breaker |
| CN109659483A (en) * | 2017-10-11 | 2019-04-19 | 宁德时代新能源科技股份有限公司 | Secondary cell top cap subassembly and secondary cell |
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2001
- 2001-09-28 JP JP2001304413A patent/JP4056239B2/en not_active Expired - Fee Related
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|---|---|---|---|---|
| WO2005110825A1 (en) * | 2004-05-19 | 2005-11-24 | Bridgestone Corporation | Sealing pump-up device and pump-up device |
| JP2005347254A (en) * | 2004-05-31 | 2005-12-15 | Samsung Sdi Co Ltd | Secondary battery |
| KR102008524B1 (en) * | 2011-05-27 | 2019-08-07 | 오오쯔까 테크노 코포레이션 | Circuit breaker and battery pack including the same |
| KR20120132427A (en) * | 2011-05-27 | 2012-12-05 | 오오쯔까 테크노 코포레이션 | Circuit breaker and battery pack including the same |
| US9159985B2 (en) | 2011-05-27 | 2015-10-13 | Ostuka Techno Corporation | Circuit breaker and battery pack including the same |
| CN102800525A (en) * | 2011-05-27 | 2012-11-28 | 大冢科技株式会社 | Circuit breaker and battery pack including the same |
| JP2013037858A (en) * | 2011-08-05 | 2013-02-21 | Otsuka Techno Kk | Battery pack with non-conduction type breaker |
| CN103999180A (en) * | 2011-12-22 | 2014-08-20 | 小松电子部品有限公司 | A circuit breaker and a safety circuit and a secondary battery pack equipped with the circuit breaker |
| KR101386896B1 (en) * | 2012-09-21 | 2014-04-18 | 자화전자(주) | Battery protection device using PTC |
| CN109659483A (en) * | 2017-10-11 | 2019-04-19 | 宁德时代新能源科技股份有限公司 | Secondary cell top cap subassembly and secondary cell |
| CN112968256A (en) * | 2021-02-03 | 2021-06-15 | 东莞新能安科技有限公司 | Electrochemical device and electronic device |
| JP2024503979A (en) * | 2021-11-02 | 2024-01-30 | エルジー エナジー ソリューション リミテッド | Secondary battery that can prevent overcharging and its charging method |
| JP7641380B2 (en) | 2021-11-02 | 2025-03-06 | エルジー エナジー ソリューション リミテッド | Overcharge-preventable secondary battery and charging method thereof |
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