JPH06349480A - Composite protective element and battery pack with composite protective element - Google Patents
Composite protective element and battery pack with composite protective elementInfo
- Publication number
- JPH06349480A JPH06349480A JP5137354A JP13735493A JPH06349480A JP H06349480 A JPH06349480 A JP H06349480A JP 5137354 A JP5137354 A JP 5137354A JP 13735493 A JP13735493 A JP 13735493A JP H06349480 A JPH06349480 A JP H06349480A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- fuse
- protective element
- composite protective
- current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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
- Connection Of Batteries Or Terminals (AREA)
- Protection Of Static Devices (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、特に携帯用機器に用い
られる電池の安全性向上のための保護素子に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protective element for improving the safety of batteries used in portable equipment.
【０００２】[0002]
【従来の技術】近年、ＡＶ機器あるいはパソコン等の電
子機器のポータブル化、コードレス化が急速に進んでお
り、これらの駆動用電源として小型、軽量で高エネルギ
ー密度を有する密閉型電池への要望が高い。特にリチウ
ム二次電池はとりわけ高電圧、高エネルギー密度を有す
る電池として期待が大きい。2. Description of the Related Art In recent years, portable and cordless AV equipment or electronic equipment such as personal computers have been rapidly developed, and there has been a demand for a compact, lightweight sealed battery having a high energy density as a power source for driving these equipment. high. In particular, lithium secondary batteries are highly expected as batteries having high voltage and high energy density.
【０００３】ところが、密閉型電池、例えばリチウム金
属やカーボン材料を負極として使用するリチウム二次電
池は、短絡、過充電、逆充電等の誤使用された時に、電
池内にガスが発生し、内圧が上昇して破裂しその機能を
失ったり、周辺機器に損傷を与えることがあった。However, a sealed battery, for example, a lithium secondary battery using a lithium metal or a carbon material as a negative electrode, generates gas in the battery when it is misused such as short circuit, overcharge, reverse charge, etc. May rise and explode, losing its function or damaging peripheral devices.
【０００４】特に、過充電状態が継続すると、電解液の
分解、および活物質の分解により、電池が急激に温度上
昇したり、爆発を招く恐れがあるという問題があった。In particular, when the overcharged state continues, there is a problem that the temperature of the battery may suddenly rise or the battery may explode due to decomposition of the electrolytic solution and decomposition of the active material.
【０００５】このような、短絡、過充電、逆充電状態に
おける電池の爆発を未然に防止するため、従来は例え
ば、実開昭５９−３４７６号公報には、正温度係数抵抗
装置が提案されている。この正温度係数抵抗装置（以下
ＰＴＣ素子という）は、図３に示したようにキャップ３
と金属製リード取り付け板６に挟まれた位置にあり、キ
ャップ３、ＰＴＣ素子４、金属製リード取り付け板６の
各々の周縁部はガスケット５を介して電池缶１２の開口
部にカシメ付けられていた。発電要素９から電池の外部
端子であるキャップ３までの電気的導通径路に位置する
ＰＴＣ素子４は、電池が規定の電流値以上の電流で充電
された時に電池の温度が上昇し始め、ある温度に到達す
ると、抵抗が急激に上昇して、電流を抑制する働きをす
る。また特開平２−１１２１５１号公報、特開平２−２
８８０６３号公報には、電池内圧上昇に伴い、リードと
防爆弁を剥離もしくは切断して電流を遮断する防爆安全
装置が提案されている。この防爆安全装置は、図４
（Ａ）および、（Ｂ）に示したように内圧の上昇に伴
い、外方に変形を生じる防爆弁２１に、リード遮断用ス
トリッパー２２を接触して取り付け、所定の内圧に達し
たときリード板２３が防爆弁２１より剥離するか、リー
ド板２３が破断するようにして、電流を遮断し、爆発を
防止するようにしたものである。In order to prevent such a battery from exploding in a short circuit, overcharge or reverse charge state, a positive temperature coefficient resistance device has been proposed in Japanese Utility Model Laid-Open No. 59-3476. There is. This positive temperature coefficient resistance device (hereinafter referred to as PTC element) has a cap 3 as shown in FIG.
And the metal lead mounting plate 6 is sandwiched between the cap 3, the PTC element 4, and the metal lead mounting plate 6, and the periphery of each of them is caulked to the opening of the battery can 12 via the gasket 5. It was The PTC element 4 located in the electrical conduction path from the power generating element 9 to the cap 3 which is the external terminal of the battery starts to rise in temperature of the battery when the battery is charged with a current equal to or higher than a specified current value, and the PTC element 4 reaches a certain temperature. When reaches, the resistance rises sharply and works to suppress the current. Further, JP-A-2-112151 and JP-A-2-2
Japanese Patent No. 88063 proposes an explosion-proof safety device that separates or disconnects the reed and the explosion-proof valve to cut off the current as the battery internal pressure increases. This explosion-proof safety device is shown in Fig. 4.
As shown in (A) and (B), the reed shut-off stripper 22 is attached in contact with the explosion-proof valve 21 that deforms outwardly as the internal pressure rises, and the lead plate is reached when a predetermined internal pressure is reached. The element 23 is separated from the explosion-proof valve 21 or the lead plate 23 is broken so that the current is interrupted and the explosion is prevented.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、上記の
従来のＰＴＣ素子の場合、耐電圧以上の電圧が印加され
ると絶縁破壊を生じ、電流を抑制する働きができなくな
るという問題があった。また、電池内圧上昇に伴い、リ
ードと防爆弁を剥離もしくは切断して電流を遮断する防
爆安全装置の場合には、リード板が防爆弁から剥離、あ
るいはリード板それ自体が破断して、電流遮断するもの
であるため、リード板と防爆弁との接続強度はあまり大
きくすることができず、また、図４で解るようにリード
遮断用ストリッパー２２の穴を介して突出した金属薄板
製の防爆弁２１の突起部２２ａの先端に一方の極板から
導出したリード板２３を溶接しているため、接続強度が
不安定となりやすい。接続強度にバラツキが発生した場
合、電流が遮断されるときの電池内圧（作動圧）の著し
いバラツキとなり、例えば真夏の自動車の中に機器が放
置された時、異常な高温になり、そのためガス発生によ
り若干の内圧上昇によって遮断してしまったり、異常な
高電圧充電の時には、急激な反応が起きる前に遮断がで
きなくなるという問題があった。However, the above-mentioned conventional PTC element has a problem in that when a voltage higher than the withstand voltage is applied, dielectric breakdown occurs and the current cannot be suppressed. Also, in the case of an explosion-proof safety device that cuts off the current by peeling or disconnecting the reed and the explosion-proof valve as the battery internal pressure rises, the lead plate peels from the explosion-proof valve or the lead plate itself breaks and the current is cut off. Therefore, the connection strength between the reed plate and the explosion-proof valve cannot be increased so much, and as shown in FIG. 4, the explosion-proof valve made of a thin metal plate protruding through the hole of the reed cut-off stripper 22. Since the lead plate 23 led out from one of the electrode plates is welded to the tip of the protruding portion 22a of 21, the connection strength tends to be unstable. If the connection strength varies, the battery internal pressure (operating pressure) when the current is cut off will vary significantly, and for example, when a device is left in a car in the middle of summer, it will become an abnormally high temperature, which causes gas generation. As a result, there is a problem in that the internal pressure is cut off by a slight increase, and during abnormal high-voltage charging, the cutoff cannot be performed before a rapid reaction occurs.
【０００７】そこで、本発明は、短絡、過充電、逆充電
状態における電池の安全性と信頼性を確保することので
きる保護素子を提供することを目的とするものである。Therefore, it is an object of the present invention to provide a protection element which can ensure the safety and reliability of a battery in a short circuit, overcharge, and reverse charge states.
【０００８】[0008]
【課題を解決するための手段】この課題を解決するた
め、本発明は、誤使用等において電池に対して流れる異
常な電流を抑制、あるいは遮断するための保護素子とし
て導電材を含有した熱可塑性樹脂からなるＰＴＣ素子と
低融点合金からなるヒューズを組み合わせて、発電要素
から機器までの回路の中に配置し、且つこれらの保護素
子の電流遮断特性において、少なくともこれらの保護素
子を含む回路を短絡した時に流れる短絡電流以下の任意
の電池値における前記ＰＴＣ素子のトリップ時間（電流
抑制が働くまでの時間）よりも前記ヒューズの溶断時間
の方が長くなるように構成したものである。In order to solve this problem, the present invention provides a thermoplastic material containing a conductive material as a protective element for suppressing or interrupting an abnormal current flowing to a battery due to misuse or the like. A PTC element made of resin and a fuse made of a low melting point alloy are combined and placed in the circuit from the power generation element to the equipment, and at least the circuit including these protection elements is short-circuited in the current cutoff characteristics of these protection elements. The fuse is blown for a longer time than the trip time of the PTC element (time until the current suppression works) at an arbitrary battery value equal to or less than the short-circuit current flowing at that time.
【０００９】[0009]
【作用】以上の構成により、この複合保護素子を含む回
路が短絡した時には、電池の短絡電流によってＰＴＣ素
子の方がヒューズが溶断するより先にトリップして短絡
電流を抑制して危険な状態には至らず、短絡状態が解除
された時にはＰＴＣ素子が復帰して再び電池としての使
用が可能である。又、異常な高電圧による過充電、ある
いは逆充電によってＰＴＣ素子が絶縁破壊される場合に
は、ヒューズが溶断して電池に流れ込む電流を確実に遮
断して電池の破裂を未然に防ぐことが可能であり、安全
性の高い電池パックを得ることができる。With the above structure, when the circuit including the composite protection element is short-circuited, the short circuit current of the battery causes the PTC element to trip before the fuse is blown, thereby suppressing the short circuit current to a dangerous state. However, when the short-circuited state is released, the PTC element is restored and the battery can be used again. Also, when the PTC element is dielectrically broken down due to overcharging due to abnormally high voltage or reverse charging, it is possible to prevent the current from flowing into the battery by blowing the fuse to prevent the battery from bursting. Therefore, a highly safe battery pack can be obtained.
【００１０】[0010]
【実施例】以下、図面とともに本発明を具体的な実施例
によって説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the accompanying drawings.
【００１１】図１は、本発明の実施例における複合保護
素子を含む電池パック（電池は１個のみ使用）を示す図
である。この電池パックの複合保護素子は、キャップ３
と金属製リード取り付け板６に挟まれたＰＴＣ素子４と
電池缶１２に接続しているヒューズ１５より構成されて
いる。キャップ３とＰＴＣ素子４と金属製リード取り付
け板６の周縁部はガスケット５を介して電池缶１２の開
口部にカシメ付けている。電気的導通径路としては、発
電要素９からインナーリード７、金属製リード取り付け
板６、ＰＴＣ素子４、キャップ３、プラスタンシ２を経
て機器のリード１０に接続されている。また、電池缶１
２の底部からヒューズのリード１５ｂ、ヒューズ１５、
ヒューズのリード１５ａ、マイナスタンシ１３を経て機
器のリード１４に接続されている。もし、電池パックを
携帯中にネックレスなどでプラスタンシ２の露出部とマ
イナスタンシ１３の露出部が短絡した場合、ＰＴＣ素子
４がトリップして短絡電流を抑制してネックレスの発熱
を防ぎ、火傷などの人体へ危害が及ぶのを未然に防止す
ることができる。また、機器のリード１０と１４の間に
異常な高電圧が負荷され、電池が過充電、あるいは逆充
電状態となりＰＴＣ素子４が絶縁破壊を起こしてもヒュ
ーズ１５が溶断して電池に流れこむ電流を遮断して危険
な状態を回避できる。FIG. 1 is a diagram showing a battery pack (only one battery is used) including a composite protective element according to an embodiment of the present invention. The composite protective element of this battery pack is a cap 3
And the fuse 15 connected to the battery can 12 and the PTC element 4 sandwiched between the metal lead mounting plates 6. The peripheral portions of the cap 3, the PTC element 4, and the metal lead mounting plate 6 are caulked to the opening of the battery can 12 via the gasket 5. As an electrical conduction path, the power generating element 9 is connected to the lead 10 of the device through the inner lead 7, the metal lead mounting plate 6, the PTC element 4, the cap 3 and the plastic tank 2. Also, the battery can 1
From the bottom of 2, the fuse lead 15b, the fuse 15,
It is connected to the lead 14 of the device via the lead 15 a of the fuse and the minus tank 13. If the exposed part of the plus tank 2 and the exposed part of the minus tank 13 are short-circuited while carrying the battery pack with a necklace or the like, the PTC element 4 trips to suppress the short-circuit current to prevent the necklace from generating heat, burns, etc. It is possible to prevent harm to the human body. In addition, even if an abnormally high voltage is applied between the leads 10 and 14 of the device and the battery is overcharged or reversely charged and the PTC element 4 causes a dielectric breakdown, the fuse 15 is blown and the current flowing into the battery. It is possible to avoid the dangerous state by shutting off.
【００１２】次に、上記本発明による電池パックに用い
た複合保護素子の電流遮断特性について図２を参照して
説明する。図２のグラフは、回路に流れる電流に対する
ヒューズの溶断時間、あるいはＰＴＣ素子のトリップ時
間を示している。上記本発明による電池パックのプラス
タンシとマイナスタンシを短絡したとき流れる短絡電流
値は実測で２５Ａ（アンペア）であった。本発明の電池
パックでは、図２のグラフにおいて曲線(１)の特性を有
するヒューズＡと曲線(３)の特性を有するＰＴＣ素子を
組み合わせて用いた。これらの特性を比較すると、電池
パックの短絡電流２５Ａ以下の任意の電流値においてＰ
ＴＣ素子のトリップ時間の方がヒューズＡの溶断時間よ
りも短い関係にある。そこで電池パックが携帯中にネッ
クレスなどで短絡した時には必ずＰＴＣ素子の方が先に
トリップして、短絡状態が解除されればＰＴＣ素子は復
帰するので電池パックの再使用が可能である。ところが
曲線(２)の特性を有するヒューズＢとＰＴＣ素子を組み
合わせた場合には、短絡した時にヒューズＢがＰＴＣ素
子がトリップするよりも先に溶断してしまい、永久破壊
となり電池パックの再使用ができなくなる。Next, the current cutoff characteristic of the composite protection device used in the battery pack according to the present invention will be described with reference to FIG. The graph of FIG. 2 shows the blow time of the fuse or the trip time of the PTC element with respect to the current flowing in the circuit. The short-circuit current value that flows when the plus and minus tangencies of the battery pack according to the present invention is short-circuited was 25 A (ampere) actually measured. In the battery pack of the present invention, the fuse A having the characteristic of curve (1) and the PTC element having the characteristic of curve (3) in the graph of FIG. 2 were used in combination. Comparing these characteristics, P at an arbitrary current value of the short circuit current of the battery pack of 25 A or less
The trip time of the TC element is shorter than the fusing time of the fuse A. Therefore, when the battery pack is short-circuited with a necklace or the like while being carried, the PTC element always trips first, and when the short-circuited state is released, the PTC element is restored, so that the battery pack can be reused. However, when the fuse B having the characteristic of the curve (2) and the PTC element are combined, the fuse B is melted before the PTC element trips when a short circuit occurs, resulting in permanent destruction and reuse of the battery pack. become unable.
【００１３】本発明の複合保護素子を用いれば、２重の
安全対策により異常な高電圧が負荷されＰＴＣ素子が絶
縁破壊されても、もう一つの保護素子であるヒューズが
溶断して過充電、あるいは逆充電の電流を確実に遮断し
て電池が破壊するなどの危険な状態を回避できる。If the composite protective element of the present invention is used, even if an abnormally high voltage is applied due to double safety measures and the PTC element is dielectrically destroyed, the fuse which is the other protective element is blown and overcharged. Alternatively, it is possible to surely cut off the reverse charging current and avoid a dangerous state such as battery damage.
【００１４】なお、ヒューズは電流ヒューズもしくは温
度ヒューズ共に同様な効果を示した。The fuse has the same effect as that of the current fuse or the temperature fuse.
【００１５】[0015]
【発明の効果】本発明における複合保護素子によれば、
短絡、過充電、逆充電時においても、電池の発熱、爆発
を効果的に防止することができ、特に市場で発生する確
率の高い短絡時には、復帰型の保護素子であるＰＴＣ素
子の方が先に作動（トリップ）するため永久破壊に至ら
ず、短絡での市場トラブルもなく且つ安全性の高い電池
パックを得ることが可能である。According to the composite protective element of the present invention,
Even when a short circuit, overcharge or reverse charge occurs, the heat generation and explosion of the battery can be effectively prevented, and especially in the case of a short circuit which is likely to occur in the market, the PTC element, which is a recovery type protection element, comes first. It is possible to obtain a highly safe battery pack that does not cause permanent damage because it operates (trips), has no market trouble due to a short circuit, and is highly safe.
【図１】本発明の実施例の複合保護素子を含む電池パッ
クの断面図FIG. 1 is a cross-sectional view of a battery pack including a composite protection element according to an embodiment of the present invention.
【図２】本発明の実施例の複合保護素子に関する電流遮
断特性を示す特性図FIG. 2 is a characteristic diagram showing current cutoff characteristics of a composite protection device according to an embodiment of the present invention.
【図３】従来のＰＴＣ素子のみを備えた電池の断面図FIG. 3 is a cross-sectional view of a battery including only a conventional PTC element.
【図４】（Ａ）従来の内圧上昇による電流遮断機構を備
えた電池の断面図 （Ｂ）上記においてリード板が破断した電池の断面図FIG. 4 (A) is a cross-sectional view of a conventional battery having a current interruption mechanism due to an increase in internal pressure. (B) A cross-sectional view of the battery in which the lead plate is broken in the above
１ 電池パックケース ２ プラスタンシ ３ キャップ ４ 正温度係数抵抗装置（ＰＴＣ素子） ５ ガスケット ６ 金属製リード取り付け板 ７ インナーリード ８ 上部リング ９ 発電要素 １０ 機器のリード １１ スペーサー １２ 電池缶 １３ マイナスタンシ １４ 機器のリード １５ ヒューズ １５ａ ヒューズのリード １５ｂ ヒューズのリード 1 Battery Pack Case 2 Plus Tank 3 Cap 4 Positive Temperature Coefficient Resistor (PTC Element) 5 Gasket 6 Metal Lead Mounting Plate 7 Inner Lead 8 Upper Ring 9 Power Generation Element 10 Device Lead 11 Spacer 12 Battery Can 13 Minus Tank 14 Device Lead 15 Fuse 15a Fuse Lead 15b Fuse Lead
フロントページの続き (72)発明者 村上 哲哉 大阪府門真市大字門真1006番地 松下電器 産業株式会社内Front page continuation (72) Inventor Tetsuya Murakami 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.
Claims (2)
常な電流を抑制、あるいは遮断するための保護素子とし
て導電材を含有した熱可塑性樹脂からなる正温度係数抵
抗装置と低融点合金からなるヒューズとを電池の発電要
素から機器までの回路の中に配置し、且つこれらの保護
素子の電流遮断特性において、少なくともこれらの保護
素子を含む回路を短絡した時に流れる短絡電流値以下の
任意の電流値における前記正温度係数抵抗装置のトリッ
プ時間よりも前記ヒューズの溶断時間の方が長い関係に
ある複合保護素子。1. A positive temperature coefficient resistance device made of a thermoplastic resin containing a conductive material and a fuse made of a low melting point alloy as a protective element for suppressing or blocking an abnormal current flowing to a battery due to misuse or the like. Arranged in the circuit from the power generation element of the battery to the equipment, and in the current cutoff characteristics of these protection elements, any current value not more than the short-circuit current value that flows when at least the circuit including these protection elements is short-circuited. 7. The composite protection element in which the fusing time of the fuse is longer than the trip time of the positive temperature coefficient resistance device in FIG.
池パック。2. A battery pack comprising the composite protection element according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5137354A JPH06349480A (en) | 1993-06-08 | 1993-06-08 | Composite protective element and battery pack with composite protective element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5137354A JPH06349480A (en) | 1993-06-08 | 1993-06-08 | Composite protective element and battery pack with composite protective element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06349480A true JPH06349480A (en) | 1994-12-22 |
Family
ID=15196702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5137354A Pending JPH06349480A (en) | 1993-06-08 | 1993-06-08 | Composite protective element and battery pack with composite protective element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06349480A (en) |
Cited By (11)
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| WO2001069748A1 (en) * | 2000-03-15 | 2001-09-20 | Mitsubishi Denki Kabushiki Kaisha | Cell protective circuit |
| WO2003015195A1 (en) * | 2001-08-07 | 2003-02-20 | Matsushita Electric Industrial Co., Ltd. | Non-aqueous electrolytic secondary battery |
| JP2003051304A (en) * | 2001-08-07 | 2003-02-21 | Matsushita Electric Ind Co Ltd | Nonaqueous electrolyte secondary battery |
| KR20040037547A (en) * | 2002-10-29 | 2004-05-07 | (주)포스앤테크 | Secondary battery pack |
| WO2004079852A1 (en) * | 2003-03-07 | 2004-09-16 | Tyco Electronics Raychem K.K. | Polymer ptc device |
| JP2006012805A (en) * | 2004-06-25 | 2006-01-12 | Samsung Sdi Co Ltd | Secondary battery and battery module |
| KR100803434B1 (en) * | 2006-02-10 | 2008-02-13 | 엘에스전선 주식회사 | PTC device mounted to battery cap and Secondary battery having the same |
| US7532101B2 (en) | 2002-04-25 | 2009-05-12 | Tyco Electronics Raychem K.K. | Temperature protection device |
| JP2010058912A (en) * | 2008-09-04 | 2010-03-18 | Toshiba Elevator Co Ltd | Elevator device |
| JP2011009234A (en) * | 1997-04-30 | 2011-01-13 | Ube Industries Ltd | Nonaqueous electrolyte secondary battery |
| CN113745769A (en) * | 2021-08-19 | 2021-12-03 | 新余赣锋电子有限公司 | Battery of high security |
-
1993
- 1993-06-08 JP JP5137354A patent/JPH06349480A/en active Pending
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|---|---|---|---|---|
| JP2011009234A (en) * | 1997-04-30 | 2011-01-13 | Ube Industries Ltd | Nonaqueous electrolyte secondary battery |
| US6462515B1 (en) | 2000-03-15 | 2002-10-08 | Mitsubishi Denki Kabushiki Kaisha | Cell protective circuit |
| US6630815B2 (en) | 2000-03-15 | 2003-10-07 | Mitsubishi Denki Kabushiki Kaisha | Battery protective circuit with current-amount control circuit |
| KR100450361B1 (en) * | 2000-03-15 | 2004-09-30 | 미쓰비시덴키 가부시키가이샤 | Cell protective circuit |
| WO2001069748A1 (en) * | 2000-03-15 | 2001-09-20 | Mitsubishi Denki Kabushiki Kaisha | Cell protective circuit |
| KR100867068B1 (en) * | 2001-08-07 | 2008-11-04 | 파나소닉 주식회사 | Non-aqueous electrolytic secondary battery |
| WO2003015195A1 (en) * | 2001-08-07 | 2003-02-20 | Matsushita Electric Industrial Co., Ltd. | Non-aqueous electrolytic secondary battery |
| JP2003051304A (en) * | 2001-08-07 | 2003-02-21 | Matsushita Electric Ind Co Ltd | Nonaqueous electrolyte secondary battery |
| US7532101B2 (en) | 2002-04-25 | 2009-05-12 | Tyco Electronics Raychem K.K. | Temperature protection device |
| KR20040037547A (en) * | 2002-10-29 | 2004-05-07 | (주)포스앤테크 | Secondary battery pack |
| US7652860B2 (en) | 2003-03-07 | 2010-01-26 | Naofumi Miyasaka | Polymer PTC device |
| CN100373683C (en) * | 2003-03-07 | 2008-03-05 | 泰科电子雷伊化学株式会社 | Polymer PTC device |
| EP1603184A4 (en) * | 2003-03-07 | 2008-10-01 | Tyco Electronics Raychem Kk | Polymer ptc device |
| EP1603184A1 (en) * | 2003-03-07 | 2005-12-07 | Tyco Electronics Raychem K.K. | Polymer ptc device |
| WO2004079852A1 (en) * | 2003-03-07 | 2004-09-16 | Tyco Electronics Raychem K.K. | Polymer ptc device |
| JP2006012805A (en) * | 2004-06-25 | 2006-01-12 | Samsung Sdi Co Ltd | Secondary battery and battery module |
| US7867643B2 (en) | 2004-06-25 | 2011-01-11 | Samsung Sdi Co., Ltd. | Battery module including a battery management system controlling secondary batteries containing protective circuits |
| KR100803434B1 (en) * | 2006-02-10 | 2008-02-13 | 엘에스전선 주식회사 | PTC device mounted to battery cap and Secondary battery having the same |
| JP2010058912A (en) * | 2008-09-04 | 2010-03-18 | Toshiba Elevator Co Ltd | Elevator device |
| CN113745769A (en) * | 2021-08-19 | 2021-12-03 | 新余赣锋电子有限公司 | Battery of high security |
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