JPH07245090A - Safety device for storage battery and sealed storage battery provided with it - Google Patents
Safety device for storage battery and sealed storage battery provided with itInfo
- Publication number
- JPH07245090A JPH07245090A JP6060115A JP6011594A JPH07245090A JP H07245090 A JPH07245090 A JP H07245090A JP 6060115 A JP6060115 A JP 6060115A JP 6011594 A JP6011594 A JP 6011594A JP H07245090 A JPH07245090 A JP H07245090A
- Authority
- JP
- Japan
- Prior art keywords
- storage battery
- charging
- safety device
- lead
- discharging
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、蓄電池の内圧上昇によ
って作動する蓄電池用安全装置及びそれを備えた密閉型
蓄電池に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety device for a storage battery which operates when the internal pressure of the storage battery rises, and a sealed storage battery including the safety device.
【０００２】[0002]
【従来の技術】近年、家庭用ホームビデオ、携帯用ＣＤ
プレーヤーや携帯用電話等の電子機器が普及し、最近で
は、これら電子機器の小型化、高性能化に伴って電源供
給部としての密閉電池も、より小型化、高容量化が図ら
れている。このような小型密閉電池では、何らかの原因
で電池内圧が一端上昇してしまうと、電池が急速に破損
することもありうる。2. Description of the Related Art Recently, home video for home, portable CD
Electronic devices such as players and mobile phones have become widespread, and in recent years, with the miniaturization and high performance of these electronic devices, the sealed battery as a power supply unit has also been made smaller and higher in capacity. . In such a small sealed battery, if the internal pressure of the battery rises for some reason, the battery may be damaged rapidly.
【０００３】例えば、充電時に蓄電池が過充電されたと
きに生じる発熱や、放電時の誤使用によって負荷側が短
絡されたときに生じる短絡電流により、蓄電池内の電解
液が分解あるいは蒸発したり、電極活物質の分解等によ
る異常反応物質などが蓄電池内に充満したりしてしま
い、蓄電池の内圧や温度の異常上昇を引き起こすような
場合である。For example, the electrolytic solution in the storage battery is decomposed or evaporated due to the heat generated when the storage battery is overcharged during charging or the short-circuit current generated when the load side is short-circuited due to misuse during discharge, or the electrodes are decomposed or evaporated. This is a case in which an abnormal reaction substance or the like due to decomposition of the active material fills the storage battery, causing an abnormal rise in internal pressure or temperature of the storage battery.
【０００４】このような蓄電池の異常挙動による発熱や
破損などを防止するため、蓄電池内には前記のような現
象が生じると、蓄電池内の一定圧力を感知して負荷への
回路を遮断する構造が必要とされる。In order to prevent heat generation or damage due to such abnormal behavior of the storage battery, when a phenomenon as described above occurs in the storage battery, a constant pressure in the storage battery is sensed to shut off the circuit to the load. Is required.
【０００５】従来の蓄電池用安全装置を図５に示す。図
５において、４１は外装缶、４２はガスケット、４３は
弁孔、４４は蓋板、４７は弾性弁体、４５は弾性弁体４
７の凹部、４６は弾性弁体４７の薄肉部、４８はガス抜
き穴、４９は皿状端子板、５０は切断刃である。FIG. 5 shows a conventional safety device for a storage battery. In FIG. 5, 41 is an outer can, 42 is a gasket, 43 is a valve hole, 44 is a cover plate, 47 is an elastic valve element, and 45 is an elastic valve element 4.
7 is a concave portion, 46 is a thin portion of the elastic valve body 47, 48 is a gas vent hole, 49 is a dish-shaped terminal plate, and 50 is a cutting blade.
【０００６】同図において、圧力開放用の安全装置は、
負極端子を兼用する外装ケースの上部に設けられてい
る。この安全装置は、絶縁性のガスケット上面に取り付
けられており、中心部に弁孔４３を設けた蓋板４４と、
凹部４５が形成された円筒状の弾性弁体であって、その
底面が薄肉部４６である弾性弁体４７と、この弾性弁体
上部を覆うように取り付けられ、ガス抜き穴４８が形成
された皿状端子板４９とからなり、前記弾性弁体４７の
凹部４５には前記薄肉部４６の方向に突出する切断刃５
０が形成されたものである。ケースの内圧が高まると、
弾性弁体４７の薄肉部４６が切断刃方向に伸張し、薄肉
部４６が切断刃５０に突き当たる。さらに内圧が高まる
と、薄肉部が切断刃によって破断され、皿状端子板４９
に設けられたガス抜き穴４８をへて大気中にガスが放出
され、もって電池の内圧上昇による破裂が防止される。In the figure, the safety device for releasing pressure is
It is provided on the upper part of the outer case that also serves as the negative electrode terminal. This safety device is attached to the upper surface of an insulating gasket, and has a lid plate 44 having a valve hole 43 in the center,
A cylindrical elastic valve body having a recess 45 formed therein, the bottom surface of which is a thin-walled portion 46, and an elastic valve body 47 attached so as to cover the upper portion of the elastic valve body, and a gas vent hole 48 is formed. A cutting blade 5 which is composed of a dish-shaped terminal plate 49 and projects in the direction of the thin portion 46 in the recess 45 of the elastic valve body 47.
0 is formed. When the internal pressure of the case increases,
The thin portion 46 of the elastic valve body 47 extends in the cutting blade direction, and the thin portion 46 abuts the cutting blade 50. When the internal pressure is further increased, the thin portion is broken by the cutting blade, and the dish-shaped terminal plate 49
The gas is released into the atmosphere through the gas vent hole 48 provided in the battery, so that the battery is prevented from bursting due to an increase in the internal pressure.
【０００７】この安全装置では、安全弁、つまり弾性弁
体が壊裂することにより、蓄電池の内圧上昇が抑えられ
る。しかしながら、充電電流や放電電流は内圧に関係な
く流れ続けるため、さらに蓄電池内の電解液や活物質の
分解が促進されるとともに温度上昇が持続する。In this safety device, the safety valve, that is, the elastic valve body is ruptured so that the internal pressure of the storage battery is prevented from increasing. However, since the charging current and the discharging current continue to flow regardless of the internal pressure, the decomposition of the electrolytic solution and the active material in the storage battery is further promoted and the temperature rise is continued.
【０００８】[0008]
【発明が解決しようとする課題】従来の蓄電池用安全装
置における上記のような問題を解決するため、電池内圧
が所定の値に達したとき、安全弁の変形によって電流を
遮断するよう構成された蓄電池用安全装置が特公平２−
２８８０６３号に開示されている（図６参照）。In order to solve the above-mentioned problems in the conventional safety device for a storage battery, the storage battery configured to cut off the current by deforming the safety valve when the internal pressure of the battery reaches a predetermined value. Security device is special fair 2-
No. 288063 (see FIG. 6).
【０００９】図６において、６３はガスケット、６２は
内圧の上昇にともなって内圧方向に変形を生じる防爆
弁、６４は防爆弁６２の下部に接触するよう取り付けら
れたリード遮断用ストリッパー、６５は閉塞蓋体、６６
は発電要素、６７は絶縁板、６８はリード遮断用ストリ
ッパー６４の下部に取り付けられ、発電要素６６の正極
側内部端子（図示せず）と正極端子６５に接続する防爆
弁６２とに接続されたリード板、７１は、板状発電要素
を巻回すのに用いる巻芯、７５は防爆弁に設けられた薄
肉部である。リード遮断用ストリッパー６４には、リー
ド板６８と防爆弁６２とを接続するための接続孔が形成
されており、この接続孔を通してリード板６８と防爆弁
６２とが溶接によって接続されている。In FIG. 6, reference numeral 63 is a gasket, 62 is an explosion-proof valve that deforms in the internal pressure direction as the internal pressure rises, 64 is a reed cut-off stripper attached so as to contact the lower portion of the explosion-proof valve 62, and 65 is closed. Lid, 66
Is a power generating element, 67 is an insulating plate, 68 is attached to the lower part of the stripping stripper 64 for lead interruption, and is connected to the positive electrode side internal terminal (not shown) of the power generating element 66 and the explosion-proof valve 62 connected to the positive electrode terminal 65. A lead plate, 71 is a winding core used to wind the plate-shaped power generating element, and 75 is a thin portion provided in the explosion-proof valve. The lead blocking stripper 64 is formed with a connection hole for connecting the lead plate 68 and the explosion-proof valve 62, and the lead plate 68 and the explosion-proof valve 62 are connected by welding through this connection hole.
【００１０】この蓄電池安全装置では、所定の内圧に達
したとき、防爆弁の変形によって防爆弁とリード板との
接続部分の接触が断たれ、電流が遮断される。In this storage battery safety device, when a predetermined internal pressure is reached, the explosion proof valve is deformed so that the contact between the explosion proof valve and the lead plate is cut off and the current is cut off.
【００１１】しかしながら、充電電流を遮断する際にリ
ード板と防爆弁との接触が、何らかの原因で断たれなか
った場合には、結局、電池の破損に至ってしまうことが
考えられ、高容量化された小型蓄電池の信頼性が著しく
向上したとは必ずしもいえない。それゆえに、より高い
信頼性を有する蓄電池用安全装置及びそれを備えた密閉
型蓄電池の出現が望まれる。However, if the contact between the lead plate and the explosion-proof valve is not interrupted for some reason when the charging current is interrupted, the battery may eventually be damaged and the capacity is increased. It cannot always be said that the reliability of the small storage battery has been remarkably improved. Therefore, the advent of a storage battery safety device having higher reliability and a sealed storage battery including the safety device is desired.
【００１２】[0012]
【課題を解決するための手段】そこで、本発明では、一
端が蓄電池内部の電極に接続され、他端が蓄電池の正極
端子又は負極端子に接続された充放電用リードと、充放
電用リード切断手段と、蓄電池内部圧力の上昇に伴って
変形する圧力感応手段とを備えてなり、蓄電池内部圧力
の上昇により変形した圧力感応手段が充放電用リード切
断手段を押圧して充放電用リードを切断することによ
り、蓄電池の充放電回路が遮断されるよう構成された蓄
電池用安全装置及びそれを備えた密閉型蓄電池により上
記課題を解決するものである。Therefore, in the present invention, one end is connected to an electrode inside a storage battery and the other end is connected to a positive electrode terminal or a negative electrode terminal of the storage battery, and a charging / discharging lead is disconnected. And a pressure sensitive means that deforms with an increase in the internal pressure of the storage battery, the pressure sensitive means deformed by the increase in the internal pressure of the storage battery presses the charging / discharging lead cutting means to cut the charging / discharging lead. By doing so, the above problem is solved by the storage battery safety device configured to shut off the charge / discharge circuit of the storage battery and the sealed storage battery including the safety device.
【００１３】[0013]
【作用】本発明になる蓄電池用安全装置では、過充電叉
は外部短絡などの原因で蓄電池の内圧が上昇し始める
と、外装ケース蓋板に密閉装着された安全装置の圧力感
応手段は、上昇した圧力により徐々に変形し、この変形
によって充放電用リードに当接されるよう配設された充
放電用リード切断手段が押圧され、切断手段の切断刃が
リードに押し当てられ、もって充放電用リードを切断し
て電流を遮断する。In the storage battery safety device according to the present invention, when the internal pressure of the storage battery starts to rise due to overcharging or an external short circuit, the pressure sensitive means of the safety device hermetically attached to the outer case cover plate is raised. It gradually deforms due to the applied pressure, and this deformation presses the charging / discharging lead cutting means arranged so as to come into contact with the charging / discharging lead, and the cutting blade of the cutting means is pressed against the lead, thereby charging / discharging. Cut the lead to cut off the current.
【００１４】また、本発明にかかる充放電用リードをヒ
ューズとすることにより、過充電時等の過大電流によっ
て充放電用リードが溶断され、電流を遮断することがで
きる。By using a fuse as the charging / discharging lead according to the present invention, the charging / discharging lead is melted by an excessive current during overcharging, and the current can be cut off.
【００１５】これにより、必要以上の電流通過が遮断さ
れ、蓄電池内圧の異常上昇及び蓄電池破損を防ぐことが
でき、より信頼性の高い蓄電池を提供できる。As a result, the passage of an unnecessarily large amount of current is cut off, an abnormal increase in the internal pressure of the storage battery and damage to the storage battery can be prevented, and a more reliable storage battery can be provided.
【００１６】[0016]
【実施例】以下、本発明になる蓄電池用安全装置及びそ
れを備えた蓄電池について、その実施例を示す図面に基
づいて具体的に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A safety device for a storage battery according to the present invention and a storage battery including the same will be specifically described below with reference to the drawings showing the embodiments.
【００１７】図１は、本発明になる蓄電池用安全装置を
備えた蓄電池の要部断面図である。FIG. 1 is a sectional view of a main part of a storage battery provided with a safety device for a storage battery according to the present invention.
【００１８】図２は、本発明になる蓄電池用安全装置を
備えた蓄電池の要部拡大正面断面図である。図３は、図
２に示した蓄電池用安全装置の要部拡大平面断面図であ
る。FIG. 2 is an enlarged front sectional view of a main part of a storage battery equipped with the storage battery safety device according to the present invention. FIG. 3 is an enlarged plan sectional view of an essential part of the safety device for a storage battery shown in FIG.
【００１９】これらの図において、９は負極端子を兼ね
る外装ケース、１０は正極端子、１１はパッキン、１２
は電極要素である。２は、一端が蓄電池内部の電極に接
続され、他端が蓄電池の正極端子１０に接続された充放
電用リードであり、３は充放電用リード切断手段、４は
蓄電池内部の電極に接続された電極側内部端子、５は蓄
電池の正極端子１０に接続された正極端子側内部端子、
７は接続線、８は外装ケース蓋板である。６は、接続線
７に接続された内部端子４及び５を固定する内部端子保
持体である。１は、電極要素１２と外装ケース蓋板８と
の空間に配された凹形状の圧力感応手段であり、蓄電池
の内圧上昇により、図２の上方へ変形可能なように構成
されている。尚、接続線７は、接続線でなくても導電性
を有するものであれば何でも良い。In these figures, 9 is an outer case which also serves as a negative electrode terminal, 10 is a positive electrode terminal, 11 is a packing, and 12
Is an electrode element. 2 is a charging / discharging lead whose one end is connected to an electrode inside the storage battery and the other end is connected to the positive electrode terminal 10 of the storage battery, 3 is a charging / discharging lead cutting means, and 4 is connected to an electrode inside the storage battery. Electrode side internal terminal, 5 is a positive electrode terminal side internal terminal connected to the positive electrode terminal 10 of the storage battery,
Reference numeral 7 is a connecting wire, and 8 is an outer case cover plate. Reference numeral 6 denotes an internal terminal holder for fixing the internal terminals 4 and 5 connected to the connection line 7. Reference numeral 1 is a concave pressure-sensitive means disposed in the space between the electrode element 12 and the outer case cover plate 8, and is configured to be deformable upward in FIG. 2 when the internal pressure of the storage battery rises. The connection line 7 is not limited to the connection line and may be anything as long as it has conductivity.
【００２０】本発明において、圧力感応手段１は、電解
液や発生ガスに対して耐食性を有するものを選択する必
要がある。このようなものとしては、ステンレス、銅、
アルミなどが考えられる。部材そのものが腐食され易い
ものであっても、メッキ処理等を施し、耐蝕性を向上さ
せて使用しても良い。また、本実施例において、圧力感
応手段１の形状は凹形状であるが、図３に示したように
圧力感応手段の底部を凸形状としたり、圧力感応手段１
の側面に横Ｖ字溝が形成された形状あるいは横Ｕ字溝が
形成された形状としても良い。In the present invention, the pressure sensitive means 1 must be selected to have corrosion resistance to the electrolytic solution and the generated gas. Such things include stainless steel, copper,
Aluminum etc. are considered. Even if the member itself is easily corroded, it may be used after being subjected to plating treatment or the like to improve its corrosion resistance. Further, in the present embodiment, the shape of the pressure sensitive means 1 is concave, but as shown in FIG. 3, the bottom of the pressure sensitive means has a convex shape, or the pressure sensitive means 1
It may have a shape in which a lateral V-shaped groove is formed on the side surface of the above or a shape in which a lateral U-shaped groove is formed.
【００２１】充放電用リード２の材質としては、銅、ニ
ッケル、金、銀、アルミニウム、ニッケルとアルミとの
合金など、一般に電気用接続導体に使用されているもの
を用いることができる。この充放電用リード２には絶縁
用もしくは耐蝕用の被覆を施しても良いし、被覆せずに
そのまま用いても良い。形状としては細線や板状であっ
ても良く、切断に支障がなければどんな形状であっても
良い。また、充放電用リード２にヒューズとしての機能
を持たすことにより、過充電時等の過大電流が流れた時
でも充放電用リードが溶断されるので、電流を遮断する
ことができる。As the material of the charging / discharging lead 2, those commonly used for electrical connection conductors such as copper, nickel, gold, silver, aluminum, and an alloy of nickel and aluminum can be used. The charging / discharging lead 2 may be covered with an insulating or anticorrosive coating, or may be used without being coated. The shape may be a thin wire or a plate, and may be any shape as long as it does not hinder cutting. Further, by providing the charging / discharging lead 2 with a function as a fuse, the charging / discharging lead is melted even when an excessive current flows at the time of overcharging, so that the current can be interrupted.
【００２２】リード切断手段３は、図１のように圧力感
応手段１と一体に配設してもよいし、圧力感応手段１と
別々に配設、つまり空中に支持されるよう、蓋板８と内
部端子保持体６と圧力感応手段１とで形成される空間に
配設させておき、蓄電池内圧が一定の値に上昇した時点
で、圧力感応手段がリード切断手段を押圧して充放電用
リードが切断されるようにしてもよい。The lead cutting means 3 may be integrally provided with the pressure sensitive means 1 as shown in FIG. 1, or may be provided separately from the pressure sensitive means 1, that is, so as to be supported in the air. It is arranged in the space formed by the internal terminal holder 6 and the pressure sensitive means 1, and when the internal pressure of the storage battery rises to a certain value, the pressure sensitive means presses the lead cutting means for charging and discharging. The leads may be cut.
【００２３】リード切断手段３の材質としては、通常、
非導電性物質、例えば、セラミックス、硬質プラスチッ
クなどを用いることができるが、リードの態様、例えば
切断されると同時にスプリングバック等により完全に離
反する構造如何によっては、金属等の導電性物質を用い
ても良い。形状的には、充放電用リードを切断する部分
をシャープエッジにしておけばよい。The material of the lead cutting means 3 is usually
A non-conductive material such as ceramics or hard plastic can be used, but a conductive material such as a metal is used depending on the form of the lead, for example, the structure in which the material is completely separated by spring back when cut. May be. In terms of shape, the portion for cutting the charging / discharging lead may have a sharp edge.
【００２４】本実施例にかかる密閉型蓄電池は、図１に
示すように電極要素が外装ケース中に配されており、圧
力感応手段１の上部に充放電用リード２を接続させた電
極側及び正極端子側内部端子４、５を保持したそれぞれ
の内部端子保持体６を密着させ、これを外装ケース蓋板
８へ密着させている。切断手段３は、充放電用リード下
部に切断刃が当接するよう圧力感応手段１の底部へ一体
に配設されている。また、充放電用リードは、一端が電
極側内部端子４に接続され、他端が正極側内部端子５に
接続されているが、内部端子を用いずに、リードの一端
を内部電極に接続された接続線へ、他端を充放電端子に
接続された接続線へ直結させてもよい。As shown in FIG. 1, the sealed type storage battery according to the present embodiment has electrode elements arranged in an outer case, and an electrode side to which a charging / discharging lead 2 is connected to an upper part of a pressure sensitive means 1 and The internal terminal holders 6 holding the positive electrode terminal side internal terminals 4 and 5 are brought into close contact with each other, and this is brought into close contact with the outer case cover plate 8. The cutting means 3 is integrally arranged on the bottom of the pressure sensitive means 1 so that the cutting blade contacts the lower part of the charging / discharging lead. The charging / discharging lead has one end connected to the electrode-side internal terminal 4 and the other end connected to the positive electrode-side internal terminal 5, but one end of the lead is connected to the internal electrode without using the internal terminal. Alternatively, the other end may be directly connected to the connection line connected to the charging / discharging terminal.
【００２５】本発明になる蓄電池用安全装置を備えた密
閉型蓄電池は、過充電叉は外部短絡などの原因で蓄電池
の内圧が上昇し始めると、外装ケース蓋板８に密着され
た蓄電池用安全装置の圧力感応手段１が、上昇した圧力
によって徐々に変形し、この変形によって切断手段３が
押圧され、充放電用リード２に当接されるよう配された
切断手段３の刃先が充放電用リード２に押し当てられ、
もって充放電用リードを切断して電流を遮断する。The sealed storage battery provided with the storage battery safety device according to the present invention is a storage battery safety device that is closely attached to the outer case cover plate 8 when the internal pressure of the storage battery starts to rise due to overcharging or an external short circuit. The pressure sensitive means 1 of the device is gradually deformed by the increased pressure, and the cutting means 3 is pressed by this deformation, and the cutting edge of the cutting means 3 arranged so as to come into contact with the charging / discharging lead 2 is for charging / discharging. Pressed against lead 2,
Therefore, the charging / discharging lead is cut to interrupt the current.
【００２６】尚、実施例では蓄電池用安全装置を外装ケ
ース蓋板８に密着させているが、外部ケース上部側面
等、安全装置を配しうる空間であればどこにあっても良
い。Although the storage battery safety device is brought into close contact with the outer case cover plate 8 in the embodiment, it may be provided in any space where the safety device can be arranged, such as an upper side surface of the outer case.
【００２７】[0027]
【発明の効果】本発明にかかる蓄電池用安全装置は、一
端が蓄電池内部の電極に接続され、他端が蓄電池の正極
端子又は負極端子に接続された充放電用リードと、充放
電用リード切断手段と、蓄電池内部圧力の上昇に伴って
変形する圧力感応手段とを備えてなり、蓄電池内部圧力
の上昇により変形した圧力感応手段が充放電用リード切
断手段を押圧して充放電用リードを切断することによ
り、蓄電池の充放電回路が遮断されるよう構成されたも
のである。充放電用リード切断手段と圧力感応手段と
は、一体に配設されたものであっても良く、また充放電
用リード切断手段が非導電性部材であっても良い。さら
に、充放電用リードは、過大電流が流れた時に溶断する
ヒューズとしてもよい。The safety device for a storage battery according to the present invention has one end connected to an electrode inside the storage battery and the other end connected to a positive electrode terminal or a negative electrode terminal of the storage battery, and a charge / discharge lead disconnection. And a pressure sensitive means that deforms with an increase in the internal pressure of the storage battery, the pressure sensitive means deformed by the increase in the internal pressure of the storage battery presses the charging / discharging lead cutting means to cut the charging / discharging lead. By doing so, the charging / discharging circuit of the storage battery is cut off. The charging / discharging lead cutting means and the pressure sensitive means may be integrally provided, or the charging / discharging lead cutting means may be a non-conductive member. Further, the charging / discharging lead may be a fuse that blows when an excessive current flows.
【００２８】本発明にかかる蓄電池用安全装置を蓄電池
に用いることにより、切断手段が充放電用リードを切断
するので、負荷への電流遮断を完全に行うことができ
る。By using the storage battery safety device according to the present invention in a storage battery, the disconnecting means disconnects the charging / discharging leads, so that the current to the load can be completely cut off.
【００２９】また、充放電用リードをヒューズとするこ
とにより、過充電等の過大電流が流れた時に充放電用リ
ードが溶断され、電流を遮断することができる。Further, by using a fuse for the charging / discharging lead, the charging / discharging lead is melted and cut off when an excessive current such as overcharge flows.
【００３０】それゆえに、充電電流や短絡電流による蓄
電池内の温度上昇を初期のうちに抑制することができ、
蓄電池の内圧上昇や、それに起因する電解液の漏液など
を防止できるので、より高い信頼性を有する蓄電池を提
供することができる。Therefore, the temperature rise in the storage battery due to the charging current and the short-circuit current can be suppressed in the early stage,
Since it is possible to prevent an increase in internal pressure of the storage battery and leakage of the electrolytic solution due to the increase, it is possible to provide a storage battery having higher reliability.
【００３１】本発明になる蓄電池用安全装置は、円筒
形、角形などの形状を問わず、鉛蓄電池、アルカリ蓄電
池、非水電解液蓄電池等あらゆる密閉式蓄電池に用いる
ことができ、本発明の工業的価値はきわめて大きい。The storage battery safety device according to the present invention can be used in any sealed storage battery such as a lead storage battery, an alkaline storage battery, a non-aqueous electrolyte storage battery, regardless of the shape such as a cylindrical shape or a prismatic shape. The target value is extremely large.
【図１】本発明になる蓄電池用安全装置を備えた蓄電池
の要部断面図である。FIG. 1 is a cross-sectional view of a main part of a storage battery including a safety device for a storage battery according to the present invention.
【図２】本発明になる蓄電池用安全装置を備えた蓄電池
の要部拡大正面断面図である。FIG. 2 is an enlarged front sectional view of a main part of a storage battery provided with the storage battery safety device according to the present invention.
【図３】図２に示した蓄電池用安全装置の要部拡大平面
断面図である。FIG. 3 is an enlarged plan sectional view of a main part of the storage battery safety device shown in FIG.
【図４】本発明になる蓄電池用安全装置の圧力感応手段
の形状を示す説明図である。FIG. 4 is an explanatory view showing the shape of the pressure sensitive means of the storage battery safety device according to the present invention.
【図５】従来の蓄電池用安全装置の一例を示す要部断面
図である。FIG. 5 is a cross-sectional view of essential parts showing an example of a conventional safety device for a storage battery.
【図６】従来の蓄電池用安全装置の一例を示す要部断面
図である。FIG. 6 is a sectional view of an essential part showing an example of a conventional storage battery safety device.
１ 圧力感応手段 ２ 充放電用リード ３ リード切断手段 ６ 内部端子保持体 ８ 外装ケース蓋板 ９ 外装ケース １０ 正極端子 １１ パッキン １２ 電極要素 1 Pressure Sensing Means 2 Charge / Discharge Leads 3 Lead Cutting Means 6 Internal Terminal Holder 8 Outer Case Lid 9 Outer Case 10 Positive Terminal 11 Packing 12 Electrode Element
Claims (5)
端が蓄電池の正極端子又は負極端子に接続された充放電
用リードと、充放電用リード切断手段と、蓄電池内部圧
力の上昇に伴って変形する圧力感応手段とを備えてな
り、蓄電池内部圧力の上昇により変形した圧力感応手段
が充放電用リード切断手段を押圧して充放電用リードを
切断することにより、蓄電池の充放電回路が遮断される
よう構成されたことを特徴とする蓄電池用安全装置。1. A charging / discharging lead having one end connected to an electrode inside a storage battery and the other end connected to a positive electrode terminal or a negative electrode terminal of the storage battery, a charging / discharging lead cutting means, and an increase in internal pressure of the storage battery. The pressure sensitive means deformed due to the rise of the internal pressure of the storage battery presses the charging / discharging lead cutting means to cut the charging / discharging lead, whereby the charging / discharging circuit of the storage battery is formed. A safety device for a storage battery, which is configured to be cut off.
とが一体に配設されたものである、請求項１記載の蓄電
池用安全装置。2. The safety device for a storage battery according to claim 1, wherein the charging / discharging lead cutting means and the pressure sensitive means are integrally provided.
よりなる、請求項１叉は２記載の蓄電池用安全装置。3. The safety device for a storage battery according to claim 1, wherein the charge / discharge lead cutting means is made of a non-conductive member.
特徴とする請求項１、２もしくは３記載の蓄電池用安全
装置。4. The safety device for a storage battery according to claim 1, wherein the charging / discharging lead is a fuse.
池用安全装置を備えた密閉型蓄電池。5. A sealed type storage battery comprising the safety device for a storage battery according to claim 1, 2, 3 or 4.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6060115A JP2720787B2 (en) | 1994-03-03 | 1994-03-03 | Safety device for storage battery and sealed storage battery provided with the same |
| EP99118577A EP0969536A3 (en) | 1994-03-03 | 1995-03-02 | Battery |
| DE69527735T DE69527735T2 (en) | 1994-03-03 | 1995-03-02 | Safety arrangement for battery |
| EP95103000A EP0674351B1 (en) | 1994-03-03 | 1995-03-02 | Safety device for battery |
| US08/398,522 US6136464A (en) | 1994-03-03 | 1995-03-03 | Battery and safety device therefor |
| US08/541,264 US5585207A (en) | 1994-03-03 | 1995-10-12 | Battery and safety device therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6060115A JP2720787B2 (en) | 1994-03-03 | 1994-03-03 | Safety device for storage battery and sealed storage battery provided with the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07245090A true JPH07245090A (en) | 1995-09-19 |
| JP2720787B2 JP2720787B2 (en) | 1998-03-04 |
Family
ID=13132805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6060115A Expired - Fee Related JP2720787B2 (en) | 1994-03-03 | 1994-03-03 | Safety device for storage battery and sealed storage battery provided with the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2720787B2 (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08162094A (en) * | 1994-12-06 | 1996-06-21 | Japan Storage Battery Co Ltd | Safety device for storage battery and sealed storage battery having it |
| KR100443775B1 (en) * | 2001-01-19 | 2004-08-09 | 알프스 덴키 가부시키가이샤 | Pressure breaking sensor for battery |
| JP2007312491A (en) * | 2006-05-17 | 2007-11-29 | Denso Corp | Power conversion apparatus |
| WO2010146701A1 (en) * | 2009-06-19 | 2010-12-23 | トヨタ自動車株式会社 | Battery, vehicle and apparatus mounting battery |
| WO2013132704A1 (en) * | 2012-03-06 | 2013-09-12 | 株式会社豊田自動織機 | Power storage device and secondary cell |
| WO2013154166A1 (en) * | 2012-04-12 | 2013-10-17 | 株式会社豊田自動織機 | Current interrupter and electrical storage device using same |
| KR101327123B1 (en) * | 2011-12-07 | 2013-11-07 | 세방전지(주) | Lithium ion battery with tap holder |
| WO2014014026A1 (en) * | 2012-07-19 | 2014-01-23 | 株式会社豊田自動織機 | Power storage device equipped with current interrupter device |
| JP2014035831A (en) * | 2012-08-07 | 2014-02-24 | Toyota Motor Corp | Sealed battery |
| JP2015069946A (en) * | 2013-09-30 | 2015-04-13 | 株式会社Ｇｓユアサ | Power storage element |
| DE102014219230A1 (en) | 2013-09-30 | 2015-04-16 | Gs Yuasa International Ltd. | Energy storage device |
| JP6195654B1 (en) * | 2016-06-27 | 2017-09-13 | 寧徳時代新能源科技股▲分▼有限公司 | Power battery head cover and power battery |
-
1994
- 1994-03-03 JP JP6060115A patent/JP2720787B2/en not_active Expired - Fee Related
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08162094A (en) * | 1994-12-06 | 1996-06-21 | Japan Storage Battery Co Ltd | Safety device for storage battery and sealed storage battery having it |
| KR100443775B1 (en) * | 2001-01-19 | 2004-08-09 | 알프스 덴키 가부시키가이샤 | Pressure breaking sensor for battery |
| JP2007312491A (en) * | 2006-05-17 | 2007-11-29 | Denso Corp | Power conversion apparatus |
| US9159983B2 (en) | 2009-06-19 | 2015-10-13 | Toyota Jidosha Kabushiki Kaisha | Battery, vehicle mounting the battery, and device mounting the battery |
| WO2010146701A1 (en) * | 2009-06-19 | 2010-12-23 | トヨタ自動車株式会社 | Battery, vehicle and apparatus mounting battery |
| JP5083326B2 (en) * | 2009-06-19 | 2012-11-28 | トヨタ自動車株式会社 | Batteries, vehicles and devices equipped with the batteries |
| KR101327123B1 (en) * | 2011-12-07 | 2013-11-07 | 세방전지(주) | Lithium ion battery with tap holder |
| WO2013132704A1 (en) * | 2012-03-06 | 2013-09-12 | 株式会社豊田自動織機 | Power storage device and secondary cell |
| WO2013154166A1 (en) * | 2012-04-12 | 2013-10-17 | 株式会社豊田自動織機 | Current interrupter and electrical storage device using same |
| US10020146B2 (en) | 2012-04-12 | 2018-07-10 | Kabushiki Kaisha Toyota Jidoshokki | Current interruption device and electric storage device using same |
| JPWO2013154166A1 (en) * | 2012-04-12 | 2015-12-17 | 株式会社豊田自動織機 | Current interrupt device and power storage device using the same |
| US9543563B2 (en) | 2012-07-19 | 2017-01-10 | Kabushiki Kaisha Toyota Jidoshokki | Electric storage device including current interruption device |
| JPWO2014014026A1 (en) * | 2012-07-19 | 2016-07-07 | 株式会社豊田自動織機 | Power storage device with current interrupt device |
| US9685650B2 (en) | 2012-07-19 | 2017-06-20 | Kabushiki Kaisha Toyota Jidoshokki | Electric storage device including current interruption device |
| WO2014014026A1 (en) * | 2012-07-19 | 2014-01-23 | 株式会社豊田自動織機 | Power storage device equipped with current interrupter device |
| JP2014035831A (en) * | 2012-08-07 | 2014-02-24 | Toyota Motor Corp | Sealed battery |
| DE102014219230A1 (en) | 2013-09-30 | 2015-04-16 | Gs Yuasa International Ltd. | Energy storage device |
| JP2015069946A (en) * | 2013-09-30 | 2015-04-13 | 株式会社Ｇｓユアサ | Power storage element |
| US9741976B2 (en) | 2013-09-30 | 2017-08-22 | Gs Yuasa International Ltd. | Energy storage device |
| JP6195654B1 (en) * | 2016-06-27 | 2017-09-13 | 寧徳時代新能源科技股▲分▼有限公司 | Power battery head cover and power battery |
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|---|---|
| JP2720787B2 (en) | 1998-03-04 |
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