JP2005079081A - Thin battery pack - Google Patents

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JP2005079081A
JP2005079081A JP2003347577A JP2003347577A JP2005079081A JP 2005079081 A JP2005079081 A JP 2005079081A JP 2003347577 A JP2003347577 A JP 2003347577A JP 2003347577 A JP2003347577 A JP 2003347577A JP 2005079081 A JP2005079081 A JP 2005079081A
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battery
thin
pack
aluminum laminate
laminate material
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JP4403375B2 (en
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Hiroshi Kagawa
博 香川
Tsutomu Sada
勉 佐田
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PIONICS CO Ltd
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    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Abstract

<P>PROBLEM TO BE SOLVED: To provide a thin battery pack with a volume efficiency improved by housing electrode members of the thin battery pack at its maximum. <P>SOLUTION: In the thin battery pack 1 having a thin secondary battery housed in an aluminum-laminated envelope, terminals 3, 4 are integrally sealed 9 with an aluminum-laminated material 6 on the upper or lower face of the battery pack, and folded toward battery pack face side. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、リチウ厶イオン電池、リチウムポリマー電池などの薄型２次電池を内蔵する薄型パック電池に関する。The present invention relates to a thin pack battery incorporating a thin secondary battery such as a lithium ion battery or a lithium polymer battery.

薄型パック電池は特に携帯用機器に使用される。携帯電話、ノートパソコン、情報端末などの携帯用機器に使用される薄型パック電池は、その機器の作動電圧に応じた出力電圧と、使用時間に影響する電池容量を満足させる必要がある。特に使用時間を延ばすことが市場から要求されて、電池活物質の利用率を高めたり、充填密度を上げたりするなどして従来電池形状の状態で電池容量を高めている。さらに、理論容量の高い新規電池活物質の研究開発も盛んに行われている。Thin pack batteries are used in particular for portable devices. Thin pack batteries used in portable devices such as mobile phones, notebook computers, and information terminals need to satisfy an output voltage corresponding to the operating voltage of the device and a battery capacity that affects usage time. In particular, it is required from the market to extend the usage time, and the battery capacity is increased in a conventional battery shape by increasing the utilization rate of the battery active material or increasing the packing density. In addition, research and development of new battery active materials with a high theoretical capacity are being actively conducted.

なお、携帯機器に係わらず据え置き型の機器やハイブリッド自動車などの用途についても、容積効率の高い電池が望まれている。薄型パック電池としては厚さ５ｍｍ程の金属容器からなる単電池が外部接続され樹脂ケースに収納されたり、リチウムゲルポリマー電池のように電極をアルミラミネート材で***したものがある。
しかしながら、従来電池では電池周囲に電池反応に寄与しない空間が多く、容積効率を悪くしていた。Note that a battery with high volumetric efficiency is desired for applications such as stationary devices and hybrid vehicles regardless of portable devices. As a thin pack battery, there is a battery in which a single battery made of a metal container having a thickness of about 5 mm is externally connected and stored in a resin case, or an electrode is covered with an aluminum laminate material like a lithium gel polymer battery.
However, in the conventional battery, there are many spaces around the battery that do not contribute to the battery reaction, and the volumetric efficiency is deteriorated.

本発明は薄型のパック電池のパック構造に関するものである。特にアルミラミネート材を使用したパック電池はあらかじめ電極が入るだけの凹部が形成されたアルミラミネートフィル厶の該凹部に複数枚の正極板／電解液セパレータ／負極板を収納した上から蓋をして周囲を真空下で熱圧着シールすることで作製していた。例えば図１及び図２に従来の薄型パック電池の外観を示すように、端子のシール幅として水分などの透過を低減するため、約５ミリ程度の幅を持たせている。すなわちこの数ミリの幅が電池の有効容積を低下させている。さらにこれらの電池を複数個組み合わせて集合電池を作製するとそのときの容積効率はなお一層低下するなど、大きな問題となっている。The present invention relates to a pack structure of a thin battery pack. In particular, a battery pack using an aluminum laminate material is covered with a plurality of positive electrode plates / electrolyte separators / negative electrode plates in the recesses of the aluminum laminate film in which recesses are formed to accommodate the electrodes in advance. The surroundings were produced by thermocompression sealing under vacuum. For example, as shown in FIG. 1 and FIG. 2, the width of the terminal is about 5 mm in order to reduce the permeation of moisture and the like as the seal width of the terminal. That is, the width of several millimeters reduces the effective volume of the battery. Furthermore, when an assembled battery is manufactured by combining a plurality of these batteries, there is a serious problem that the volumetric efficiency at that time is further reduced.

本発明は、容積効率を低下させるような問題を解決することを目的に開発されたものであって、その主なる目的は薄型パック電池の密封形状にかかわり電池の電極有効容積を高めるものである。すなわちパック形状をコンパクトにするとともに、隣接する単電池との電気的接続も容易にできる効果的な電池構造である。The present invention was developed for the purpose of solving the problem of lowering the volumetric efficiency, and its main purpose is to increase the effective electrode volume of the battery in relation to the sealed shape of the thin pack battery. . That is, it is an effective battery structure in which the pack shape is made compact and the electrical connection with the adjacent unit cells can be easily made.

本発明による薄型パック電池１はアルミラミネート風袋の有効容積を従来に比べ１割以上高めた構造であり、気密性も高く取り扱い時の気密不良要因を排除できるものである。The thin battery pack 1 according to the present invention has a structure in which the effective volume of the aluminum laminated tare is increased by more than 10% compared to the conventional one, and has high airtightness and can eliminate the cause of airtight defects during handling.

本発明による薄型パック電池は、（１）電池の正極及び負極端子がパック電池の上面または下面でアルミラミネート材と一体にシールされていること。（２）該端子が一体にシールされたアルミラミネート材がパック電池面側に折り曲げられていること。（３）前記端子が一体シールされたアルミラミネート材の端部のアルミラミネート材が電池側面側に折り曲げられていること。（４）アルミラミネート材のシール断面厚さが外側より内側の方が大きいこと。（５）前記電池側面側に折り曲げられたアルミラミネート材が電池側面に充填材を介して接着ざれていること。（６）正極が袋状のセパレータ内に収納されて負極と交互に積層されていること。（７）少なくとも一部にポリマー電解質及び又はイオン性液体を使用していること。（８）正極及び負極内にイオン性液体が充填及び又はイオン性液体を主成分とする接着材が電極活物質などの電極材を互いに結着していることなどにより達成される。In the thin battery pack according to the present invention, (1) the positive electrode and the negative electrode terminal of the battery are sealed integrally with the aluminum laminate material on the upper surface or the lower surface of the battery pack. (2) The aluminum laminate material in which the terminals are integrally sealed is bent toward the battery pack surface. (3) The aluminum laminate material at the end of the aluminum laminate material in which the terminals are integrally sealed is bent toward the battery side surface. (4) The seal cross-sectional thickness of the aluminum laminate material is larger on the inside than on the outside. (5) The aluminum laminate material bent toward the battery side surface is adhered to the battery side surface via a filler. (6) The positive electrode is housed in a bag-shaped separator and alternately stacked with the negative electrode. (7) The polymer electrolyte and / or ionic liquid is used at least in part. (8) It is achieved by filling the positive electrode and the negative electrode with an ionic liquid and / or bonding an electrode material such as an electrode active material to each other with an adhesive mainly composed of the ionic liquid.

前記（１）はパック電池からの端子の取り出しを上面又は下面にすることでアルミラミネートのシール幅を大きくすることができ、気密性特に水分透過に対する抑制を大きくする。従来は側面部で平面的にシール部が取られていたためシール幅を大きくすると電池外寸が大きくなり容積効率が低下するのに対してシール幅を電池外寸部分に取り入れる必要がなく本発明では最大限に有効容積を高めることができ、エネルギー効率を高くできる。The above (1) can increase the seal width of the aluminum laminate by taking out the terminal from the battery pack on the upper surface or the lower surface, and increases the air tightness, particularly the suppression of moisture permeation. Conventionally, since the seal portion is taken in a planar manner on the side surface portion, increasing the seal width increases the battery outer size and reduces the volume efficiency, whereas the present invention eliminates the need to incorporate the seal width into the battery outer size portion. The effective volume can be maximized and energy efficiency can be increased.

前記（２）は端子部が一体化されたアルミラミネート材を電池面に折り曲げて倒すことで角部でのアルミラミネート材のアルミ箔が損傷するのを防止する。すなわち芯材としてのアルミニウム箔はアルミラミネートフィルムの厚さ方向の水分透過性をなくしているもので、もしアルミニウム箔が損傷するとフィルムの厚さ方向からの水分がその損傷部分を通って内部に透過し電池活物質が変質などして不活性化し寿命を低下させる。また電池外寸も電池要素を最大限に装填できる形状となる。さらに端子と一体化するアルミラミネート材のシール部以外の部分で折り曲げることで、アルミラミネートの他の部分（例えば両端部分）をシールする際、折り曲げ部分のシール強度が向上する。The (2) prevents the aluminum foil of the aluminum laminate material at the corners from being damaged by folding the aluminum laminate material with the terminal portion integrated on the battery surface. That is, the aluminum foil as the core material has lost the moisture permeability in the thickness direction of the aluminum laminate film. If the aluminum foil is damaged, the moisture from the thickness direction of the film permeates through the damaged portion to the inside. However, the battery active material is inactivated due to deterioration or the like, and the life is shortened. In addition, the outer dimensions of the battery are shaped so that the battery elements can be loaded to the maximum. Furthermore, when the other portions (for example, both end portions) of the aluminum laminate are sealed, the sealing strength of the bent portion is improved by bending at a portion other than the seal portion of the aluminum laminate material integrated with the terminal.

前記（３）は端子が一体シールされたアルミラミネート材の端部のアルミラミネート材が電池側面側に折り曲げることで前記（２）と同様な効果を有する。前記（２）で説明したシール部以外で折り曲げて他の部分をシールしたことで、側面側に折り曲げる際に角部での芯材としてのアルミニウム箔の損傷が抑制されることから電池の寿命が向上する。The above (3) has the same effect as the above (2) because the aluminum laminate material at the end of the aluminum laminate material whose terminals are integrally sealed is bent toward the side surface of the battery. Since the other portions are sealed by bending other than the seal portion described in (2) above, the damage of the aluminum foil as the core material at the corner portion is suppressed when bending to the side surface, so that the battery life is shortened. improves.

前記（４）はアルミラミネート材のシール断面厚さで外側より内側の方を厚くすることでアルミラミネート材端部切り口面からの水分の透過量を抑制するもので、寿命を高める。すなわちアルミラミネート材端部断面積でアルミニウム箔の内側の接着樹脂フィルム層の厚さが小さくなることで外気と接する面積が小さくなり水分透過量が小さくなる。The above (4) suppresses moisture permeation from the end face of the aluminum laminate material by increasing the thickness of the seal cross section of the aluminum laminate material from the outside to increase the life. That is, by reducing the thickness of the adhesive resin film layer inside the aluminum foil at the end cross-sectional area of the aluminum laminate material, the area in contact with the outside air is reduced and the moisture permeation amount is reduced.

前記（５）は前記電池側面側に折り曲げられたアルミラミネート材を電池側面に充填材を介して接着することで、電池取り扱い時に該アルミラミネート材が動きシール部と未シール部の境界部分のアルミニウム箔が損傷し切れ目が生じるのを防止する。このことから電池の寿命が向上する。In (5), the aluminum laminate material bent to the battery side surface is bonded to the battery side surface via a filler, so that the aluminum laminate material moves when the battery is handled, and aluminum at the boundary between the sealed portion and the unsealed portion is used. It prevents the foil from being damaged and causing cuts. This improves the battery life.

前記（６）は正極を袋状のセパレータ内に収納し負極と交互に積層することで各電極が位置ずれしても電極端部で電気的に短絡することがない。なお電極が積層ではなく長尺の電極が交互に巻き込まれる場合も同様に正極に長尺の袋状セパレータを***すればよい。In (6), the positive electrode is housed in a bag-shaped separator and alternately stacked with the negative electrode, so that even if each electrode is displaced, there is no electrical short circuit at the electrode end. Even when the electrodes are not laminated but long electrodes are alternately wound, a long bag-shaped separator may be covered with the positive electrode in the same manner.

前記（７）は少なくとも一部にポリマー電解質及び又はイオン性液体を使用することで、アルミラミネート材のシール域に電解液などが付着しシール不良となるのを防止する。例えば電極を組み立てた後、該電極群の外表面にポリマー電解質又はイオン性液体を塗布するだけでも、電解液による未シール域への汚染が防止できシール性を確実なものとする。これらのポリマー電解質やイオン性液体はリチウムイオン伝導性を有しているため電気化学的反応を阻害することはなく、むしろ不揮発性を有しているため異常時の発熱に際しても電池温度上昇抑制効果を発揮する。通常の液式電解質であれば電池を減圧にする段階で含浸している電解液成分が蒸発しシール部付近で電解質が結晶化することで加熱シールができなくなるという問題がある。電池内が減圧状態で密閉されていない場合は電極間の接触性が悪くなり、電気化学的反応が不十分となり電池性能が十分発揮できない。また、ポリマー電解質又はイオン性液体の比率を増やすことで電池自体の安全性が高くなる。すなわちポリマー電解質及びイオン性液体により過充電や内部短絡による発熱と電解液の蒸発、分解によるガス発生からくる発火を抑制できる。The above (7) uses a polymer electrolyte and / or ionic liquid at least in part to prevent the electrolyte from adhering to the seal region of the aluminum laminate material and causing a seal failure. For example, after assembling the electrodes, simply applying a polymer electrolyte or an ionic liquid to the outer surface of the electrode group prevents contamination of the unsealed region by the electrolyte and ensures sealing performance. Since these polymer electrolytes and ionic liquids have lithium ion conductivity, they do not hinder the electrochemical reaction, but rather have non-volatility, so they can suppress battery temperature rise even during abnormal heat generation. Demonstrate. In the case of a normal liquid electrolyte, there is a problem that the electrolyte component impregnated at the stage of reducing the pressure of the battery evaporates and the electrolyte crystallizes in the vicinity of the seal portion, so that the heat seal cannot be performed. When the inside of the battery is not sealed in a reduced pressure state, the contact between the electrodes is deteriorated, the electrochemical reaction becomes insufficient, and the battery performance cannot be sufficiently exhibited. Moreover, the safety | security of battery itself becomes high by increasing the ratio of a polymer electrolyte or an ionic liquid. That is, the polymer electrolyte and the ionic liquid can suppress ignition due to heat generation due to overcharge or internal short circuit and gas generation due to evaporation and decomposition of the electrolyte.

前記（８）は正極及び負極内にイオン性液体を充填及び又はイオン性液体を主成分とする接着材により電極活物質などの電極材を互いに結着させることで電解液がなくともイオン電導性を維持させるとともにアルミラミネート材をシールする際の真空シール時の未シール域への電解液飛沫付着が防止できシール性の信頼度が高まり、寿命が向上する。In the above (8), an ionic liquid is filled in the positive electrode and the negative electrode and / or an electrode material such as an electrode active material is bonded to each other by an adhesive mainly composed of the ionic liquid, so that the ionic conductivity can be obtained even without an electrolyte. In addition, it is possible to prevent adhesion of electrolyte droplets to the unsealed area during vacuum sealing when sealing the aluminum laminate material, and the reliability of the sealing performance is increased and the life is improved.

上述したように、本発明はリチウム二次電池などの薄型パック電池に適用されるもので、限られた容積内で最大の内容積を確保できるパック構造であって、電池の気密性、取り扱い性などを高め、電池寿命を延ばすものである。薄型パック電池の性能比較として従来構造と本発明によるものとの比較を表１に示す。

Figure 2005079081

この表１からわかるように、同じ電池外形でありながら電池容量として約１．１５倍のエネルギーを貯蔵でき、その容積効率も１．１５倍となる。さらに電池の落下試験においても電池端子部の変形に伴うシール不良が認められなかった。As described above, the present invention is applied to a thin pack battery such as a lithium secondary battery, and has a pack structure that can secure the maximum internal volume within a limited volume, and is airtight and easy to handle. To increase battery life. Table 1 shows a comparison of the performance of the thin battery pack between the conventional structure and the battery according to the present invention.
Figure 2005079081
As can be seen from Table 1, the battery capacity can be stored about 1.15 times as much as the battery capacity, and the volumetric efficiency is also 1.15 times. Further, in the battery drop test, no seal failure was observed due to the deformation of the battery terminal portion.

以下に本発明による薄型パック電池の実施例について図３から図１３に基づいて説明する。Embodiments of the thin pack battery according to the present invention will be described below with reference to FIGS.

図３は本発明による薄型パック電池１（リチウム二次電池など）の外観斜視図であって電池容器である約１２０μｍ厚さのアルミラミネート材のシール部２と正極端子３、負極端子４が図示されている。パック電池１の上面側で外装材としてのアルミラミネート材が互いに熱圧着シールされ、且つ正極端子３と負極端子４が同時に接着され一体化されている。また電池側面部のアルミラミネート材部分５は減圧下で熱圧着シールされた後、接着を兼ねた充填材を電池側面の少なくとも一部に塗布しアルミラミネート材部分５を折り曲げ電池側面に固定している。このような薄型パック電池１の作製手順と効果を以下に説明する。FIG. 3 is an external perspective view of a thin battery pack 1 (lithium secondary battery or the like) according to the present invention, and shows a seal portion 2 made of an aluminum laminate material having a thickness of about 120 μm, a positive electrode terminal 3 and a negative electrode terminal 4. Has been. On the upper surface side of the battery pack 1, an aluminum laminate material as an exterior material is thermocompression-bonded to each other, and the positive electrode terminal 3 and the negative electrode terminal 4 are simultaneously bonded and integrated. After the aluminum laminate material portion 5 on the battery side surface is thermocompression sealed under reduced pressure, a filler that also serves as an adhesive is applied to at least a part of the battery side surface, and the aluminum laminate material portion 5 is bent and fixed to the battery side surface. Yes. The production procedure and effects of such a thin battery pack 1 will be described below.

図４は内側層（図２では上面に相当）に変性ポリプロピレン樹脂フィルムがアルミニウム箔に接着され、さらにアルミニウム箔の外面（図４では下面に相当）に樹脂フィルムが接着されたアルミラミネート材６（以下パック容器という）に矩形のエンボス加工を行ったもので、該エンボス加工部（凹部）７内に電池要素としての正極、セパレーター、負極などが配置される。図５は正極３‘（端子３）とセパレーターと負極４’（端子４）を交互に積層したもので、各極の端子はそれぞれまとめて超音波溶着されている。積層スタック以外の他の方式としては扁平形に巻かれたものがある。図６はパック容器６の平面部分を凹部７の端部から折り曲げたもので、図５の正極端子３と負極端子４を折り曲げた電解液を含んだ電池要素８を凹部７内に収納した状態が図７に示される。FIG. 4 shows an aluminum laminate material 6 (in which the modified polypropylene resin film is bonded to the aluminum foil on the inner layer (corresponding to the upper surface in FIG. 2) and the resin film is bonded to the outer surface of the aluminum foil (corresponding to the lower surface in FIG. 4). (Hereinafter referred to as a pack container) is subjected to rectangular embossing, and a positive electrode, a separator, a negative electrode and the like as battery elements are disposed in the embossed portion (recessed portion) 7. FIG. 5 shows a structure in which positive electrodes 3 ′ (terminal 3), separators, and negative electrodes 4 ′ (terminal 4) are alternately stacked, and terminals of each electrode are ultrasonically welded together. Other than the stacked stack, there is a method wound in a flat shape. FIG. 6 shows a state in which the flat portion of the pack container 6 is bent from the end of the recess 7, and the battery element 8 containing the electrolytic solution obtained by bending the positive electrode terminal 3 and the negative electrode terminal 4 of FIG. Is shown in FIG.

次に図８のように折り曲げられたパック容器６の平面部分の先端を幅約５ｍｍ程度に重ね合わせて端子と一体で熱圧着シールし、さらに該平面部分を電池上面側に押し付けた状態が図９に示されるもので、熱圧着シールされた領域９が波状に図示されている。図１０は図９の波状に示される熱圧着シール域９の端部の一部を含む格子状に表示される熱圧着シール予定域１０を示す。熱圧着シール域９の立ち上がり部を電池上面側に折り曲げ減圧下で該熱圧着シール予定域１０を熱圧着した状態が図１１に示される。図１１に示される点線部１１は熱圧着シール域９を含む立ち上がり部の折り目を示している。このような折り目１１を設けた後、熱圧着シールすることで内側の変性ポリプロピレンフィルム層同士が融着時に３方向から融合し合いシール性が向上する。熱圧着シール域９のみで未接着域のない立ち上がり部の場合には折り目部分には未接着部と接着部が共存しており、融着時の融合が不十分となる場合があり、シール性が不足することもある。図１２はこのように立ち上がり部全体２を熱圧着シールし、さらに減圧下で電池側面部のアルミラミネート材部分５を熱圧着シールした場合の薄型パック電池の斜視図を示す。Next, the front end of the flat portion of the pack container 6 folded as shown in FIG. 8 is overlapped with a width of about 5 mm, is thermocompression-bonded integrally with the terminal, and the flat portion is pressed against the battery upper surface side. In FIG. 9, a thermocompression-sealed region 9 is illustrated in a wave shape. FIG. 10 shows a thermocompression seal planned area 10 displayed in a lattice shape including a part of an end portion of the thermocompression seal area 9 shown in a wavy shape in FIG. FIG. 11 shows a state in which the rising portion of the thermocompression seal area 9 is bent to the upper surface side of the battery and the thermocompression seal planned area 10 is thermocompression bonded under reduced pressure. A dotted line portion 11 shown in FIG. 11 indicates a fold of the rising portion including the thermocompression seal region 9. After such a crease 11 is provided, the inner modified polypropylene film layers are fused from three directions at the time of fusion by sealing with thermocompression, and the sealing performance is improved. In the case of a rising part with only the thermocompression seal area 9 and no unbonded area, the unbonded part and the bonded part coexist in the crease part, and the fusion at the time of fusion may be insufficient. May be insufficient. FIG. 12 is a perspective view of a thin battery pack in which the entire rising portion 2 is sealed by thermocompression bonding and the aluminum laminate material portion 5 on the side surface of the battery is thermocompression sealed under reduced pressure.

図１３は図１に示す薄型パック電池の角部分の部分拡大斜視図で、電極などの電池要素を収納する電池凹部７の外側面部と電池側面部のアルミラミネート材部分５との間に接着を兼ねた例えばシリコン樹脂などの充填材１２が充填され、それらが固定され、電池を取り扱う際に変形したりして、アルミラミネート材の芯材としてのアルミニウム箔が損傷を受けないようにしている。図中の点領域９及び１０は加熱シールされた部分を示すものである。FIG. 13 is a partially enlarged perspective view of a corner portion of the thin battery pack shown in FIG. 1, in which adhesion is made between the outer surface portion of the battery recess 7 that houses battery elements such as electrodes and the aluminum laminate material portion 5 of the battery side surface portion. The filler 12 such as silicon resin, which is also used, is filled, fixed, and deformed when the battery is handled, so that the aluminum foil as a core material of the aluminum laminate material is not damaged. Point regions 9 and 10 in the figure indicate the heat-sealed portions.

本発明は上述した実施例に限定されるものではなく、電池材料、容器寸法、電極の巻き方（平巻き、円筒など）、容器・端子・電極形状、端子・シール位置などは用途、使い方に応じてその都度最適な処方で設計されるものである。The present invention is not limited to the above-described embodiments, but battery materials, container dimensions, electrode winding methods (flat winding, cylinder, etc.), containers / terminals / electrode shapes, terminals / seal positions, etc. Depending on the case, it is designed with the optimum prescription.

本発明による薄型パック電池の斜視図を示す。1 shows a perspective view of a thin pack battery according to the present invention. FIG. 本発明による薄型パック電池に使用するアルミラミネート材の斜視図を示す。The perspective view of the aluminum laminate material used for the thin pack battery by this invention is shown. 本発明に用いられる薄型パック電池要素の斜視図を示す。The perspective view of the thin pack battery element used for this invention is shown. 本発明に用いられるアルミラミネートパック容器の斜視図を示す。The perspective view of the aluminum lamination pack container used for this invention is shown. 図４の容器内に薄型パック電池要素を収納した状態を示す。The state which accommodated the thin pack battery element in the container of FIG. 4 is shown. 図５の容器のアルミラミネート材の端部を重ね合わせた状態を示す斜視図である。It is a perspective view which shows the state which accumulated the edge part of the aluminum laminate material of the container of FIG. 図６のアルミラミネート材端部を熱シールした状態を示す斜視図である。It is a perspective view which shows the state which heat-sealed the aluminum laminate material edge part of FIG. 本発明の薄型パック電池の減圧下で熱シールする予定域を示す斜視図である。It is a perspective view which shows the plan area | region which heat-seals under reduced pressure of the thin pack battery of this invention. 減圧下で熱シールした状態を示す。The state of heat sealing under reduced pressure is shown. 本発明による他の薄型パック電池の斜視図を示す。FIG. 6 shows a perspective view of another thin pack battery according to the present invention. 本発明による薄型パック電池の角部の要部拡大斜視図を示す。The principal part expansion perspective view of the corner | angular part of the thin battery pack by this invention is shown. 従来の薄型パック電池の斜視図を示す。The perspective view of the conventional thin pack battery is shown. 従来の薄型パック電池の斜視図を示す。The perspective view of the conventional thin pack battery is shown.

符号の説明Explanation of symbols

１ 薄型パック電池
２ シール部
３ 正極端子
４ 負極端子
５ 側面部
６ パック容器
７ 凹部
８ 電池要素
９ 熱シール領域
１０ 熱圧着シール予定域
１１ 折り目
１２ 充填材DESCRIPTION OF SYMBOLS 1 Thin battery pack 2 Sealing part 3 Positive electrode terminal 4 Negative electrode terminal 5 Side face part 6 Pack container 7 Recessed part 8 Battery element 9 Heat seal area 10 Thermocompression seal expected area 11 Crease 12 Filler

Claims (8)

薄型二次電池がアルミラミネート風袋内に収納された薄型パック電池において、端子がパック電池の上面または下面でアルミラミネート材と一体にシールされていることを特徴とする薄型パック電池。A thin pack battery in which a thin secondary battery is housed in an aluminum laminate tare, wherein the terminals are integrally sealed with the aluminum laminate material on the upper surface or the lower surface of the pack battery. 前記端子が一体シールされたアルミラミネート材がパック電池面側に折り曲げられていることを特徴とする請求項１記載の薄型パック電池。2. The thin battery pack according to claim 1, wherein the aluminum laminate material in which the terminals are integrally sealed is bent toward the battery pack surface side. 前記端子が一体シールされたアルミラミネート材の端部のアルミラミネート材を電池側面側に折り曲げることを特徴とする請求項１記載の薄型パック電池。2. The thin battery pack according to claim 1, wherein the aluminum laminate material at the end of the aluminum laminate material integrally sealed with the terminals is bent toward the battery side surface. 前記アルミラミネート材のシール断面厚さが外側より内側の方が大きいことを特徴とする請求項１記載の薄型パック電池。2. The thin pack battery according to claim 1, wherein the aluminum laminate material has a seal cross-sectional thickness larger on the inner side than on the outer side. 前記電池側面側に折り曲げられたアルミラミネート材が電池側面に充填材を介して接着ざれていることを特徴とする請求項１記載の薄型パック電池。2. The thin pack battery according to claim 1, wherein the aluminum laminate material bent to the battery side surface is adhered to the battery side surface via a filler. 正極が袋状のセパレータ内に収納されて負極と交互に積層されていることを特徴とする請求項１記載の薄型パック電池。2. The thin pack battery according to claim 1, wherein the positive electrode is housed in a bag-shaped separator and is alternately laminated with the negative electrode. 少なくとも一部にポリマー電解質及び又はイオン性液体を使用していることを特徴とする請求項１記載の薄型パック電池。2. The thin pack battery according to claim 1, wherein a polymer electrolyte and / or an ionic liquid is used at least in part. 正極及び負極内にイオン性液体が充填及び又はイオン性液体を主成分とする接着材が電極活物質などの電極材を互いに結着していることを特徴とする請求項１記載の薄型パック電池。2. The thin pack battery according to claim 1, wherein the positive electrode and the negative electrode are filled with an ionic liquid and / or an adhesive mainly composed of the ionic liquid binds an electrode material such as an electrode active material to each other. .
JP2003347577A 2003-08-28 2003-08-28 Thin pack battery Expired - Fee Related JP4403375B2 (en)

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JP2008078118A (en) * 2006-09-18 2008-04-03 Lg Chem Ltd Pouch type secondary battery with improved safety
KR100824897B1 (en) * 2005-12-29 2008-04-23 삼성에스디아이 주식회사 Pouch type Battery and Method of Forming th Same
JP2008171588A (en) * 2007-01-09 2008-07-24 Sumitomo Electric Ind Ltd Lithium battery
WO2010090253A1 (en) * 2009-02-09 2010-08-12 コニカミノルタホールディングス株式会社 Sheet-like illumination device
US8053104B2 (en) 2005-12-29 2011-11-08 Samsung Sdi Co., Ltd. Pouch type battery and method of making the same
WO2016157370A1 (en) * 2015-03-30 2016-10-06 エリーパワー株式会社 Sealed battery and battery pack
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US10629857B2 (en) 2015-02-12 2020-04-21 Semiconductor Energy Laboratory Co., Ltd. Secondary battery and electronic device

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100824897B1 (en) * 2005-12-29 2008-04-23 삼성에스디아이 주식회사 Pouch type Battery and Method of Forming th Same
US8053104B2 (en) 2005-12-29 2011-11-08 Samsung Sdi Co., Ltd. Pouch type battery and method of making the same
US8936653B2 (en) 2005-12-29 2015-01-20 Samsung Sdi Co., Ltd. Pouch-type battery and method of assembling for the same
JP2008078118A (en) * 2006-09-18 2008-04-03 Lg Chem Ltd Pouch type secondary battery with improved safety
JP2008171588A (en) * 2007-01-09 2008-07-24 Sumitomo Electric Ind Ltd Lithium battery
WO2010090253A1 (en) * 2009-02-09 2010-08-12 コニカミノルタホールディングス株式会社 Sheet-like illumination device
JP5565318B2 (en) * 2009-02-09 2014-08-06 コニカミノルタ株式会社 Sheet illumination device
US10629857B2 (en) 2015-02-12 2020-04-21 Semiconductor Energy Laboratory Co., Ltd. Secondary battery and electronic device
US11258142B2 (en) 2015-02-12 2022-02-22 Semiconductor Energy Laboratory Co., Ltd. Secondary battery and electronic device
WO2016157370A1 (en) * 2015-03-30 2016-10-06 エリーパワー株式会社 Sealed battery and battery pack
JPWO2016157370A1 (en) * 2015-03-30 2018-01-25 エリーパワー株式会社 Sealed battery and battery pack
CN111029660A (en) * 2019-12-16 2020-04-17 惠州亿纬锂能股份有限公司 Battery manufacturing method and battery

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