JP2002025510A - Battery pack - Google Patents
Battery packInfo
- Publication number
- JP2002025510A JP2002025510A JP2000203880A JP2000203880A JP2002025510A JP 2002025510 A JP2002025510 A JP 2002025510A JP 2000203880 A JP2000203880 A JP 2000203880A JP 2000203880 A JP2000203880 A JP 2000203880A JP 2002025510 A JP2002025510 A JP 2002025510A
- Authority
- JP
- Japan
- Prior art keywords
- fuse
- battery pack
- current
- battery
- ptc 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、リチウムイオン
電池とその保護素子を収納した電池パックに属し、特に
部品点数が少なくて安全な小型の電池パックに属する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery pack containing a lithium-ion battery and a protection element therefor, and more particularly to a small and safe battery pack having a small number of parts.
【０００２】[0002]
【従来の技術】携帯用無線電話、携帯用パソコン、携帯
用ビデオカメラ等の小型電子機器に内蔵されるリチウム
イオン電池は、電解質として可燃性の有機電解液を用い
ており、しかも高エネルギー密度電池であることから、
過充電、外部短絡、内部短絡、過大電流、異常高温など
の過酷な条件に遭遇したとき、破裂や発火の危険性があ
る。2. Description of the Related Art Lithium-ion batteries incorporated in small electronic devices such as portable radio telephones, portable personal computers, and portable video cameras use a flammable organic electrolyte as an electrolyte and have a high energy density battery. From
There is a risk of explosion or fire when severe conditions such as overcharging, external short circuit, internal short circuit, excessive current, abnormally high temperature, etc. are encountered.
【０００３】そこで、従来より、このような危険防止の
ために、電池内圧が所定値を超えたときに作動する安全
弁、異常温度上昇に伴って軟化して短絡電流を止めるシ
ャットダウンセパレータ、電流・電圧を集積回路ＩＣで
検出し電界効果型トランジスタＦＥＴで電流回路を開閉
する保護回路、所定の温度以上で抵抗値が急上昇して電
流を制限するＰＴＣ素子、過大電流によって溶断するヒ
ューズなどの各種安全対策が施されている。Therefore, conventionally, in order to prevent such a danger, a safety valve that operates when the internal pressure of the battery exceeds a predetermined value, a shutdown separator that softens due to an abnormal temperature rise and stops a short-circuit current, Safety circuit such as a protection circuit that detects the current with an integrated circuit IC and opens and closes the current circuit with a field-effect transistor FET, a PTC element that limits the current due to a sudden rise in resistance value above a predetermined temperature, and a fuse that blows due to excessive current Is given.
【０００４】[0004]
【発明が解決しようとする課題】しかし、上記の安全対
策のうち、保護回路の仕様は電池の機種によって異な
り、例えばＩＣ素子についても各機種毎に専用の回路設
計を行う必要があった。又、ＩＣ素子、ＦＥＴ素子など
の電子部品を実装することにより、それらを含めた電池
パック全体のコストも高くなっていた。更にまた、保護
回路を用いることなく、ＰＴＣ素子とヒューズのみで構
成する試みもあるが（特開平６−３４９４８０号）、現
実にはＰＴＣ素子の作動領域とヒューズの作動領域をオ
ーバーラップさせることが難しく、信頼性に欠けてい
た。それ故、この発明の課題は、低コストで安全な小型
の電池パックを提供することにある。However, among the above safety measures, the specifications of the protection circuit differ depending on the type of battery, and it is necessary to design a dedicated circuit for each type of IC element, for example. In addition, mounting electronic components such as IC elements and FET elements has increased the cost of the entire battery pack including those components. Furthermore, there is an attempt to use only a PTC element and a fuse without using a protection circuit (Japanese Patent Laid-Open No. 6-349480). However, in practice, the operating area of the PTC element may overlap the operating area of the fuse. Difficult and unreliable. Therefore, an object of the present invention is to provide a low-cost and safe small battery pack.
【０００５】[0005]
【課題を解決するための手段】その課題を解決するため
に、この発明の電池パックは、電流もしくは電圧を検出
する集積回路ＩＣ及び電流回路を開閉する電界効果型ト
ランジスタＦＥＴを介在させることなく、リチウムイオ
ン電池、ＰＴＣ素子及びヒューズを順不同で直列に接続
した電池パックにおいて、前記ヒューズが、絶縁基板上
に金属箔又は金属薄膜にて形成され、２つのアイランド
と、アイランド間を接続する複数本の線状パターンから
なることを特徴とする。SUMMARY OF THE INVENTION In order to solve the problem, a battery pack according to the present invention comprises an integrated circuit IC for detecting a current or a voltage and a field-effect transistor FET for opening and closing the current circuit without intervening. In a battery pack in which a lithium ion battery, a PTC element and a fuse are connected in no particular order in series, the fuse is formed of a metal foil or a metal thin film on an insulating substrate, and two islands and a plurality of wires connecting the islands are provided. It is characterized by comprising a linear pattern.
【０００６】この発明の電池パックでは、ＰＴＣ素子と
ヒューズとをリチウムイオン電池と直列に接続し、しか
もそのヒューズの溶断部分が複数本の線状パターンから
なるので、過電流又は異常温度上昇の際にＰＴＣ素子又
はヒューズのいずれかがトリップ又は溶断し、電流を遮
断乃至制限するようにヒューズの特性を調整することが
できる。In the battery pack according to the present invention, the PTC element and the fuse are connected in series with the lithium ion battery, and the fuse is blown by a plurality of linear patterns. In addition, the characteristics of the fuse can be adjusted so that either the PTC element or the fuse trips or blows and interrupts or limits the current.
【０００７】通常はヒューズが溶断する前にＰＴＣ素子
がトリップして電流を制限し、電流が正常値に下がった
場合にはＰＴＣ素子が復帰して電池を再使用できる。
又、異常な高電流領域でヒューズが作動する。従って、
安全措置としてのＩＣやＦＥＴは不要であり、これらの
電子部品が無いので従来よりも低コストで小型である。
尚、電池内部の安全措置については限定されず、従来通
り安全弁やシャットダウンセパレータが設けられていて
も良い。Normally, the PTC element trips before the fuse is blown to limit the current, and when the current falls to a normal value, the PTC element returns and the battery can be reused.
Also, the fuse operates in an abnormally high current region. Therefore,
No IC or FET is required as a safety measure, and since there are no such electronic components, the cost and size are lower than before.
The safety measures inside the battery are not limited, and a safety valve and a shutdown separator may be provided as in the related art.
【０００８】前記リチウムイオン電池はポリマー電解質
を備えていると好ましい。ここで言うポリマーは、それ
単独で電解質として機能するものであってもよいし、そ
れに電解液をしみ込ませることにより電解質として機能
するものであってもよい。このようなポリマー電解質
は、８０℃以上でも溶解せず形状を維持して電解質とし
て機能するし、それにより電解液の使用量が減り、リチ
ウムイオン電池自体の耐熱性が向上する。そのため、外
部の安全措置としてはＰＴＣ素子とヒューズだけで益々
十分に安全が保たれるからである。ポリマーとしては、
ポリフッ化ビニリデン（ＰＶｄＦ）、ポリテトラフルオ
ロエタン、ポリヘキサフルオロプロピレン及びこれらの
共重合体が挙げられる。又、ポリマーの分子量や、共重
合体の場合のモノマーの比率を変えることにより融点を
調整することができる。It is preferable that the lithium ion battery includes a polymer electrolyte. The polymer referred to here may function alone as an electrolyte, or may function as an electrolyte by impregnating the electrolyte with it. Such a polymer electrolyte does not dissolve even at a temperature of 80 ° C. or higher, maintains its shape and functions as an electrolyte, thereby reducing the amount of electrolyte used and improving the heat resistance of the lithium ion battery itself. Therefore, as an external safety measure, the PTC element and the fuse alone are used to ensure more and more safety. As a polymer,
Examples thereof include polyvinylidene fluoride (PVdF), polytetrafluoroethane, polyhexafluoropropylene, and a copolymer thereof. The melting point can be adjusted by changing the molecular weight of the polymer or the ratio of the monomer in the case of a copolymer.
【０００９】この発明の電池パックにおいて、前記ＰＴ
Ｃ素子が０．０５〜０．５Ａ／℃の感応温度係数と２０
Ａ以上の電流値領域でトリップ時間０．００１秒以上と
なる特性を有し、前記金属箔又は金属薄膜が銅からな
り、前記線状パターンの各々が３０μｍ以上５０μｍ以
下の厚さ、０．１ｍｍ以上０．５ｍｍ以下の幅、２ｍｍ
以上２０ｍｍ以下の長さを有すると好ましい。In the battery pack according to the present invention, the PT
C element has a temperature coefficient of sensitivity of 0.05 to 0.5 A / ° C and 20
A characteristic that the trip time is 0.001 second or more in a current value region of A or more, the metal foil or the metal thin film is made of copper, and each of the linear patterns has a thickness of 30 μm or more and 50 μm or less, 0.1 mm 0.5mm or less width, 2mm
It is preferable to have a length of at least 20 mm.
【００１０】電流値の変化に対して、このような特定範
囲のＰＴＣ素子のトリップ時間とヒューズの溶断時間と
を個別に測定し、同一グラフ上に打点したとき、４０Ａ
以下の電流領域にトリップ特性、２０Ａ以上の電流領域
に溶断特性が存在し、２０Ａ〜４０Ａの電流領域で両特
性を重ならせることができるからである。With respect to the change in the current value, the trip time of the PTC element and the blow time of the fuse in such a specific range are individually measured, and when they are plotted on the same graph, 40 A
This is because a trip characteristic exists in a current region below and a fusing characteristic exists in a current region of 20 A or more, and both characteristics can be overlapped in a current region of 20 A to 40 A.
【００１１】[0011]
【実施例】−実施例１− プラスチック絶縁基板の上に銅箔にて形成され、アイラ
ンド間を接続する線状パターンの厚さｔが３５μｍ、１
８μｍのいずれか、幅Ｗが０．０７５ｍｍ、０．１５ｍ
ｍ、０．２ｍｍ、０．３ｍｍ、０．５ｍｍのいずれか、
長さＬが１ｍｍ、２ｍｍ、５ｍｍ、１０ｍｍのいずれか
である各単線のヒューズを準備した。EXAMPLES-Example 1-A linear pattern formed of copper foil on a plastic insulating substrate and connecting islands has a thickness t of 35 μm,
8 μm, width W is 0.075 mm, 0.15 m
m, any of 0.2mm, 0.3mm, 0.5mm,
A single line fuse having a length L of 1 mm, 2 mm, 5 mm, or 10 mm was prepared.
【００１２】このヒューズをＤＣ電源及び電子負荷と直
列に接続し、各電流値で１秒間通電し、電子負荷を変え
ることにより１Ａづつ電流値を上げながらヒューズが溶
断する電流値を調べた。ヒューズ溶断時には全て発煙を
確認した。ヒューズの幅Ｗをパラメータとし、溶断電流
値と長さＬとの関係をグラフに打点した。厚さｔ＝３５
μｍの場合の測定結果を図１、ｔ＝１８μｍの場合の測
定結果を図２に示す。図中の黒点のうち、◇形がＷ＝
０．０７５ｍｍ、□形がＷ＝０．１５ｍｍ、△形がＷ＝
０．２０ｍｍ、○形がＷ＝０．３０ｍｍ、×形がＷ＝
０．５０ｍｍの値を示す。The fuse was connected in series with a DC power supply and an electronic load, and a current was applied for 1 second at each current value. The current value at which the fuse was blown was examined while increasing the current value by 1 A by changing the electronic load. When the fuse was blown, all smoke was confirmed. Using the width W of the fuse as a parameter, the relationship between the fusing current value and the length L was plotted on a graph. Thickness t = 35
FIG. 1 shows the measurement results in the case of μm, and FIG. 2 shows the measurement results in the case of t = 18 μm. Of the black dots in the figure, the ◇ shape is W =
0.075mm, □ type W = 0.15mm, △ type W =
0.20mm, ○: W = 0.30mm, ×: W =
It shows a value of 0.50 mm.
【００１３】図に見られるように、長さＬが長いほど溶
断電流値が一定に近づき、また単位長さ当たりの変化の
度合いは厚さｔ及び幅Ｗが小さいほど少ない。従って、
１本の線状パターンでヒューズを構成するよりも合計厚
さ及び合計幅が同じであるなら複数本の線状パターンで
構成する方がばらつきが少なくなることは明らかであ
る。As shown in the figure, the longer the length L, the closer the fusing current value becomes to a constant value, and the smaller the thickness t and the width W, the smaller the degree of change per unit length. Therefore,
Obviously, if the total thickness and the total width are the same as compared with the case where the fuse is composed of one linear pattern, the variation will be smaller if the fuse is composed of a plurality of linear patterns.
【００１４】例えば、図２（ｔ＝１８μｍ）の例で、Ｗ
＝０．１５ｍｍであればＬ＝５ｍｍ以上で電流値がほと
んど一定であるのに対し、Ｗ＝０．３０ｍｍならＬ＝５
ｍｍとＬ＝６ｍｍとで３％以上電流値が異なる。その結
果、Ｗ＝０．１５ｍｍの２線を並列接続することによ
り、Ｗ＝０．３０ｍｍ単線のものよりも電流値のパター
ン長依存性が３％以上向上することになる。For example, in the example of FIG. 2 (t = 18 μm), W
= 0.15 mm, the current value is almost constant at L = 5 mm or more, while W = 0.30 mm, L = 5
The current value differs by 3% or more between mm and L = 6 mm. As a result, by connecting two wires of W = 0.15 mm in parallel, the pattern length dependency of the current value is improved by 3% or more as compared with that of a single wire of W = 0.30 mm.
【００１５】−実施例２− この発明の効果を確認するために、以下の仕様のリチウ
ムイオン二次電池を製作した。制作した電池の蓄電要素
は、正極板、セパレータ、負極板及びセパレータであ
り、順に重ね合わせて各電極板とセパレータ間を多孔質
接着膜にて接着しポリエチレンの巻芯を中心として、そ
の周囲に扁平状に巻いたものである。セパレータに電解
液が含浸されている。Example 2 In order to confirm the effect of the present invention, a lithium ion secondary battery having the following specifications was manufactured. The energy storage elements of the produced battery are a positive electrode plate, a separator, a negative electrode plate and a separator.These are superimposed in order and bonded between each electrode plate and the separator with a porous adhesive film. It is wound flat. The separator is impregnated with the electrolytic solution.
【００１６】正極板は、厚さ２０μｍのＡｌ箔からなる
集電体に活物質としてのリチウムコバルト複合酸化物Li
CoO2を含む合剤層が保持されたものである。正極合剤
は、結着剤であるポリフッ化ビニリデン６重量部（以
下、「重量」を省く。）と導電剤であるアセチレンブラ
ック３部とを上記活物質９１部とともに混合してＮ−メ
チル−２−ピロリドン（ＮＭＰ）を加えてペースト状に
調製された。その合剤を、その集電体材料の両面に塗
布、乾燥し、加圧することによって正極板が製作され
た。The positive electrode plate comprises a current collector made of Al foil having a thickness of 20 μm and a lithium-cobalt composite oxide Li as an active material.
The mixture layer containing CoO 2 is retained. The positive electrode mixture is prepared by mixing 6 parts by weight of polyvinylidene fluoride as a binder (hereinafter, “weight” is omitted) and 3 parts of acetylene black as a conductive agent together with 91 parts of the active material, and mixing N-methyl- A 2-pyrrolidone (NMP) was added to prepare a paste. The mixture was applied to both sides of the current collector material, dried, and pressed to produce a positive electrode plate.
【００１７】別途、フッ化ビニリデン／ヘキサフルオロ
プロピレン共重合体Ｐ（ＶｄＦ／ＨＦＰ）８部をＮＭＰ
に溶かし、その溶液に上記正極板を浸けることにより、
正極合剤にＰ（ＶｄＦ／ＨＦＰ）を含浸させた。続い
て、水中に浸けて溶媒抽出した後、正極合剤中から水と
ＮＭＰを除去することによって、有孔性固体ポリマーを
活物質合剤中に含む厚さ１８０μｍ、幅４２ｍｍの正極
板を得た。Separately, 8 parts of vinylidene fluoride / hexafluoropropylene copolymer P (VdF / HFP)
By dissolving the positive electrode plate in the solution,
The positive electrode mixture was impregnated with P (VdF / HFP). Subsequently, after immersing in water and extracting the solvent, water and NMP are removed from the positive electrode mixture to obtain a positive electrode plate having a thickness of 180 μm and a width of 42 mm containing the porous solid polymer in the active material mixture. Was.
【００１８】負極板は、厚さ１４μｍのＣｕ箔からなる
集電体にホスト物質としての黒鉛を含む合剤層が保持さ
れたものである。負極合剤は、比表面積１ｍ2／ｇの黒
鉛粉末９２部と結着剤としてのポリフッ化ビニリデン８
部とを混合してＮＭＰを加えてペースト状に調製され
た。その合剤を、その集電体材料の両面に塗布、乾燥
し、加圧することによって負極板が製作された。負極板
にも正極板と同様に有孔性固体ポリマーを含ませて厚さ
１７０μｍ、幅４５ｍｍの負極板を得た。The negative electrode plate is obtained by holding a mixture layer containing graphite as a host material on a current collector made of a Cu foil having a thickness of 14 μm. The negative electrode mixture was composed of 92 parts of graphite powder having a specific surface area of 1 m 2 / g and polyvinylidene fluoride 8 as a binder.
And NMP was added thereto to prepare a paste. The mixture was applied to both sides of the current collector material, dried, and pressed to produce a negative electrode plate. Similarly to the positive electrode plate, a porous solid polymer was included in the negative electrode plate to obtain a negative electrode plate having a thickness of 170 μm and a width of 45 mm.
【００１９】セパレータは、気孔率３５％、厚み２５μ
ｍのポリエチレンシートである。このセパレータで挟ま
れた負極板と正極板とを重ね合わせ、ポリエチレンの巻
芯を中心として巻き付けた後、巻芯を抜くことによって
蓄電要素を製造した。The separator has a porosity of 35% and a thickness of 25 μm.
m polyethylene sheet. The negative electrode plate and the positive electrode plate sandwiched between the separators were overlapped, wound around a polyethylene core, and then the core was removed to produce an electricity storage element.
【００２０】この蓄電要素を、ＰＥＴからなる表面保護
層とＡｌからなるバリア層とＰＰからなる溶着層との３
層構造を有する金属樹脂ラミネートフィルムで包み、フ
ィルムの縁同士を溶着して袋状の容器にし、電解液を注
入した。電解液は、ＬｉＰＦ 6を１ｍｏｌ／ｌ含むエチ
レンカーボネート：ジエチルカーボネート＝１：１（体
積比）の混合液である。得られた電池は、電池電圧が
３．６Ｖで、１２Ｖの鉛電池に接続されて１Ａまでの過
電流であれば安全弁が作動するものであった。This power storage element is made of PET surface protection.
Of a layer, a barrier layer made of Al and a welding layer made of PP
Wrap with a metal resin laminate film having a layer structure, and
The edges of the film are welded together to form a bag-like container, and the electrolyte is poured.
Entered. The electrolyte is LiPF 6Containing 1 mol / l
Lencarbonate: diethyl carbonate = 1: 1 (body
(Product ratio). The resulting battery has a battery voltage of
At 3.6V, connected to a 12V lead-acid battery,
If the electric current was applied, the safety valve was activated.
【００２１】一方、プリント配線基板上に銅箔にて幅
０．２ｍｍ、長さ５．０ｍｍ、平均厚さ４４μｍの線状
パターン３本に形成されたパターンヒューズと、ＰＴＣ
素子（タイコ・エレクトロニクス・レイケム株式会社製
ＶＴＰ１７０）を各々１０個用意した。そして、ＰＴＣ
素子及びパターンヒューズに個別に０．９〜５０アンペ
アの種々の電流を流し、ＰＴＣ素子のトリップ時間及び
パターンヒューズの溶断時間を測定した結果を図３に示
す。On the other hand, a pattern fuse formed of three linear patterns having a width of 0.2 mm, a length of 5.0 mm, and an average thickness of 44 μm on a printed wiring board with copper foil, and a PTC
Ten elements (VTP170 manufactured by Tyco Electronics Raychem Co., Ltd.) were prepared. And PTC
FIG. 3 shows the results of measuring the trip time of the PTC element and the fusing time of the pattern fuse by applying various currents of 0.9 to 50 amperes individually to the element and the pattern fuse.
【００２２】図３に見られるように、ＰＴＣ素子のトリ
ップ時間は製品によって遅断側から速断側まで同一電流
値で桁違いのばらつきがあるが、ＰＴＣ素子は概ね０．
９〜２５アンペアの電流領域で作動する。一方、パター
ンヒューズは、概ね１８〜５０アンペアの電流領域で作
動する。そして、双方が作動可能な１８〜２５アンペア
の重なり領域では、常にＰＴＣ素子のトリップ時間の方
がパターンヒューズの溶断時間よりも短い。このＰＴＣ
素子は上記電池の正極端子に、パターンヒューズは負極
端子に接続され、ＰＴＣ素子の作動領域より低い電流領
域では安全弁が作動することから、全電流領域で安全な
電池パックとなる。As shown in FIG. 3, the trip time of the PTC element varies by orders of magnitude with the same current value from the slow side to the fast side depending on the product.
It operates in the current range of 9-25 amps. On the other hand, the pattern fuse operates in a current range of approximately 18 to 50 amps. In the overlap region of 18 to 25 amps where both can operate, the trip time of the PTC element is always shorter than the blow time of the pattern fuse. This PTC
The element is connected to the positive terminal of the battery, and the pattern fuse is connected to the negative terminal. Since the safety valve operates in a current region lower than the operation region of the PTC element, the battery pack is safe in the entire current region.
【００２３】[0023]
【発明の効果】以上の通り、この発明の電池パックは、
ＩＣやＦＥＴが無くても安全であるので安価且つ小型で
エネルギー密度が高く、携帯用機器の電源として有用で
ある。As described above, the battery pack of the present invention comprises:
Since it is safe even without an IC or FET, it is inexpensive, small and has a high energy density, and is useful as a power source for portable equipment.
【図１】厚さ３５μｍの線状パターン１本の溶断電流と
パターン長との関係を示すグラフである。FIG. 1 is a graph showing a relationship between a fusing current and a pattern length of one linear pattern having a thickness of 35 μm.
【図２】厚さ１８μｍの線状パターン１本の溶断電流と
パターン長との関係を示すグラフである。FIG. 2 is a graph showing a relationship between a fusing current and a pattern length of one linear pattern having a thickness of 18 μm.
【図３】ＰＴＣ素子のトリップ特性及びパターンヒュー
ズの溶断特性を示すグラフである。FIG. 3 is a graph showing a trip characteristic of a PTC element and a blowing characteristic of a pattern fuse.
フロントページの続き (72)発明者 小島 淳史 京都府京都市南区吉祥院新田壱ノ段町５番 地 ジーエス・メルコテック株式会社内 (72)発明者 北村 雅紀 京都府京都市南区吉祥院西ノ庄猪之馬場町 １番地 日本電池株式会社内 (72)発明者 村井 哲也 京都府京都市南区吉祥院西ノ庄猪之馬場町 １番地 日本電池株式会社内 Ｆターム(参考） 5H011 AA13 KK00 KK01 KK04 Continuation of the front page (72) Inventor Atsushi Kojima 5th, Kichijoin Nitta Ichidandancho, Minami-ku, Kyoto, Kyoto Prefecture Inside GS Melcotec Co., Ltd. (72) Inventor Masaki Kitamura, Kichijoin Nishino, Minami-ku, Kyoto, Kyoto No. 1, Sho-Inomaba-cho, Japan Battery Co., Ltd. (72) Inventor Tetsuya Murai No. 1, Nishino Sho-Inomaba-cho, Kichijoin, Minami-ku, Kyoto, Kyoto Prefecture F-term in Nihon Battery Co., Ltd. 5H011 AA13 KK00 KK01 KK04
Claims (4)
及び電流回路を開閉する電界効果型トランジスタＦＥＴ
を介在させることなく、リチウムイオン電池、ＰＴＣ素
子及びヒューズを順不同で直列に接続した電池パックに
おいて、 前記ヒューズが、絶縁基板上に金属箔又は金属薄膜にて
形成され、２つのアイランドと、アイランド間を接続す
る複数本の線状パターンからなることを特徴とする電池
パック。An integrated circuit IC for detecting a current or a voltage.
Field-effect transistor FET that opens and closes current circuits
A battery pack in which a lithium ion battery, a PTC element, and a fuse are connected in no particular order in series without intervening, wherein the fuse is formed of a metal foil or a metal thin film on an insulating substrate; A battery pack comprising a plurality of linear patterns for connecting the battery packs.
を備えている請求項１に記載の電池パック。2. The battery pack according to claim 1, wherein the lithium ion battery includes a polymer electrolyte.
の感応温度係数と２０Ａ以上の電流値領域でトリップ時
間０．００１秒以上となる特性を有する請求項１又は２
に記載の電池パック。3. The method according to claim 1, wherein the PTC element is 0.05 to 0.5 A / ° C.
And a trip time of 0.001 second or more in a current value region of 20 A or more.
The battery pack according to 1.
記線状パターンの各々が３０μｍ以上５０μｍ以下の厚
さ、０．１ｍｍ以上０．５ｍｍ以下の幅、２ｍｍ以上２
０ｍｍ以下の長さを有する請求項１〜３のいずれかに記
載の電池パック。4. The metal foil or the metal thin film is made of copper, and each of the linear patterns has a thickness of 30 μm or more and 50 μm or less, a width of 0.1 mm or more and 0.5 mm or less, and a width of 2 mm or more.
The battery pack according to any one of claims 1 to 3, which has a length of 0 mm or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000203880A JP3501734B2 (en) | 2000-07-05 | 2000-07-05 | Battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000203880A JP3501734B2 (en) | 2000-07-05 | 2000-07-05 | Battery pack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002025510A true JP2002025510A (en) | 2002-01-25 |
| JP3501734B2 JP3501734B2 (en) | 2004-03-02 |
Family
ID=18701232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000203880A Expired - Fee Related JP3501734B2 (en) | 2000-07-05 | 2000-07-05 | Battery pack |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3501734B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011007535A1 (en) | 2009-07-17 | 2011-01-20 | パナソニック株式会社 | Battery connecting member and battery module using same |
| WO2011007547A1 (en) | 2009-07-17 | 2011-01-20 | パナソニック株式会社 | Battery module and battery pack using same |
| JP2011054360A (en) * | 2009-08-31 | 2011-03-17 | Toshiba Corp | Battery pack |
-
2000
- 2000-07-05 JP JP2000203880A patent/JP3501734B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011007535A1 (en) | 2009-07-17 | 2011-01-20 | パナソニック株式会社 | Battery connecting member and battery module using same |
| WO2011007547A1 (en) | 2009-07-17 | 2011-01-20 | パナソニック株式会社 | Battery module and battery pack using same |
| US8062785B2 (en) | 2009-07-17 | 2011-11-22 | Panasonic Corporation | Battery module and battery pack using the same |
| US9184426B2 (en) | 2009-07-17 | 2015-11-10 | Panasonic Intellectual Property Management Co., Ltd. | Battery connection member and battery module using the same |
| JP2011054360A (en) * | 2009-08-31 | 2011-03-17 | Toshiba Corp | Battery pack |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3501734B2 (en) | 2004-03-02 |
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