JPH09213338A - Battery and lithium ion secondary battery - Google Patents
Battery and lithium ion secondary batteryInfo
- Publication number
- JPH09213338A JPH09213338A JP8013543A JP1354396A JPH09213338A JP H09213338 A JPH09213338 A JP H09213338A JP 8013543 A JP8013543 A JP 8013543A JP 1354396 A JP1354396 A JP 1354396A JP H09213338 A JPH09213338 A JP H09213338A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- positive electrode
- negative electrode
- electrode plate
- current collector
- 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
-
- 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
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電池及びリチウム
イオン二次電池に関するものである。TECHNICAL FIELD The present invention relates to a battery and a lithium ion secondary battery.
【０００２】[0002]
【従来の技術】一般に電池は、正極板と負極板とが電解
質層を介して積層されて構成されている。また近年で
は、高容量、高エネルギー密度の二次電池として、リチ
ウムイオン二次電池が用いられている。リチウムイオン
二次電池は、高容量、高重量エネルギー密度の利点を生
かして、ＶＴＲカメラ、ノートパソコン、携帯電話等の
ポータブル機器に多用されている。この種のリチウムイ
オン二次電池としては、リチウムイオンを吸蔵放出する
物質（リチウム含有酸化物等）を活物質とする正極板
と、リチウムイオンを吸蔵放出する炭素材料（グラファ
イト）を負極材とする負極板とがリチウム塩を溶解した
非水電解液を含浸するセパレータからなる電解質層に積
層されて構成されたものが知られている。具体的な例と
しては、正極板は、アルミ箔等の金属箔からなる正極集
電体にＬｉＣｏＯ2 （リチウムイオンを吸蔵放出する物
質）を含むペーストが塗布されて作られている。また負
極板は、銅箔等の金属箔からなる正極集電体に炭素材料
（グラファイト）を含むペーストが塗布されて作られて
いる。またこの種のリチウムイオン二次電池は、正極板
と負極板とを電解質層を介して積層した状態で巻回する
いわゆる巻回式により構成することもある。2. Description of the Related Art Generally, a battery is constructed by laminating a positive electrode plate and a negative electrode plate with an electrolyte layer interposed therebetween. In recent years, lithium ion secondary batteries have been used as secondary batteries having high capacity and high energy density. BACKGROUND OF THE INVENTION Lithium ion secondary batteries are widely used in portable devices such as VTR cameras, notebook computers, and mobile phones, taking advantage of their high capacity and high weight energy density. In this type of lithium ion secondary battery, a positive electrode plate having an active material that absorbs and releases lithium ions (such as a lithium-containing oxide) and a carbon material (graphite) that absorbs and releases lithium ions as a negative electrode material It is known that a negative electrode plate is laminated on an electrolyte layer composed of a separator impregnated with a non-aqueous electrolytic solution in which a lithium salt is dissolved. As a specific example, the positive electrode plate is made by applying a paste containing LiCoO 2 (a substance that absorbs and releases lithium ions) to a positive electrode current collector made of a metal foil such as an aluminum foil. The negative electrode plate is made by applying a paste containing a carbon material (graphite) to a positive electrode current collector made of metal foil such as copper foil. In addition, this type of lithium ion secondary battery may be configured by a so-called winding method in which a positive electrode plate and a negative electrode plate are wound in a state of being laminated with an electrolyte layer in between.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、一般的
な電池は、電池全体の重量に占める集電体の重量割合が
大きく、電池の重量エネルギー密度を高めるには、限界
があった。特に重量エネルギー密度を高くできるリチウ
ムイオン二次電池においては、電池の重量エネルギー密
度をさらに高めることは大きな課題となっている。また
正極板と負極板とを電解質層を介して積層した状態で巻
回する場合では、帯状の極板を用いるため、電池全体の
重量に占める集電体の重量割合が特に大きくなるという
問題があった。However, in a general battery, the weight ratio of the current collector to the total weight of the battery is large, and there is a limit to increase the weight energy density of the battery. Particularly in a lithium ion secondary battery capable of increasing the weight energy density, further increasing the weight energy density of the battery has been a major issue. Further, when the positive electrode plate and the negative electrode plate are wound in a state of being laminated with the electrolyte layer interposed therebetween, since a strip-shaped electrode plate is used, there is a problem that the weight ratio of the current collector to the total weight of the battery becomes particularly large. there were.
【０００４】本発明の目的は、集電体の強度を低下させ
ることなく、集電体の重量を軽くして、重量エネルギー
密度値を高めることができる電池を提供することにあ
る。An object of the present invention is to provide a battery which can reduce the weight of the current collector and increase the weight energy density value without lowering the strength of the current collector.
【０００５】本発明の他の目的は、集電体の強度を低下
させることなく、集電体の重量を軽くして、重量エネル
ギー密度値を高めることができるリチウムイオン二次電
池を提供することにある。Another object of the present invention is to provide a lithium ion secondary battery which can reduce the weight of the current collector and increase the weight energy density value without lowering the strength of the current collector. It is in.
【０００６】[0006]
【課題を解決するための手段】上記課題を解決するため
に、本発明では、電池エネルギーを低下させたり、集電
体の強度を低下させることなく、集電体の重量を軽くす
る。即ち、樹脂製フィルムまたは樹脂製シートの表面に
形成された導電性薄膜により正極板及び負極板の少なく
とも一方の集電体を構成する。樹脂製フィルムまたは樹
脂製シートは、従来用いていたアルミ箔、銅箔等の金属
箔に比べて比重が小さいので、導電性薄膜を表面に形成
した樹脂製フィルムまたは樹脂製シート（以下、集電構
成体と言う）は、従来の集電体に比べて軽い。しかも樹
脂製フィルムは従来の集電体（金属箔）に劣らない可撓
性及び強度を有しているので、集電構成体は、従来の集
電体と同様の強度を維持することができる。In order to solve the above problems, the present invention reduces the weight of the current collector without lowering the battery energy or the strength of the current collector. That is, the current collector of at least one of the positive electrode plate and the negative electrode plate is constituted by the conductive thin film formed on the surface of the resin film or resin sheet. Resin film or resin sheet has a smaller specific gravity than conventional metal foils such as aluminum foil and copper foil, so resin film or sheet with conductive thin film formed on the surface (hereinafter referred to as current collector). The structure) is lighter than conventional current collectors. Moreover, since the resin film has flexibility and strength comparable to that of the conventional current collector (metal foil), the current collecting component can maintain the same strength as the conventional current collector. .
【０００７】[0007]
【発明の実施の形態】本発明は、正極板と負極板とが電
解質層を介して積層されてなる電池を対象にして、樹脂
製フィルムまたは樹脂製シートの表面に形成された導電
性薄膜により正極板及び負極板の少なくとも一方の集電
体を構成する。特に、正極板及び負極板を電解質層を介
して積層した状態で巻回する場合には、帯状の極板を用
いるため、電池全体の重量に占める集電体の重量割合が
大きくなる。そのため、集電構成体の重量を軽くするこ
とにより、電池全体の重量が著しく軽くなり、電池の重
量エネルギー密度を高くすることができる。なお、この
ように巻回する場合は、樹脂製フィルムまたは樹脂製シ
ートの両面に導電性薄膜を形成する。BEST MODE FOR CARRYING OUT THE INVENTION The present invention is intended for a battery in which a positive electrode plate and a negative electrode plate are laminated with an electrolyte layer in between, and uses a conductive thin film formed on the surface of a resin film or a resin sheet. At least one of the positive electrode plate and the negative electrode plate constitutes a current collector. In particular, when the positive electrode plate and the negative electrode plate are wound in a state of being laminated with the electrolyte layer interposed therebetween, since the strip-shaped electrode plate is used, the weight ratio of the current collector to the total weight of the battery becomes large. Therefore, by reducing the weight of the current collecting component, the weight of the entire battery is significantly reduced, and the weight energy density of the battery can be increased. In the case of winding in this way, conductive thin films are formed on both sides of the resin film or resin sheet.
【０００８】樹脂製フィルムまたは樹脂製シートとして
は、ポリエチレンテレフタレート（ＰＥＴ）、ポリイミ
ド、ポリプロピレン等の材質からなるものを用いること
ができる。導電性薄膜は、アルミニウム薄膜、銅薄膜等
の適宜な材質を電池に応じて選択すればよい。As the resin film or resin sheet, those made of polyethylene terephthalate (PET), polyimide, polypropylene or the like can be used. As the conductive thin film, an appropriate material such as an aluminum thin film or a copper thin film may be selected according to the battery.
【０００９】導電性薄膜は、蒸着、スパッタリング、め
っき等により形成することができる。導電性薄膜を蒸着
により形成すれば、導電性薄膜を薄く形成でき、集電体
の重量を有効的に軽くできる。また導電性薄膜を樹脂製
フィルムに強固に接合できる。The conductive thin film can be formed by vapor deposition, sputtering, plating or the like. If the conductive thin film is formed by vapor deposition, the conductive thin film can be formed thin and the weight of the current collector can be effectively reduced. Further, the conductive thin film can be firmly bonded to the resin film.
【００１０】本発明は、各種の電池に適用できるが、本
発明をリチウムイオン二次電池に適用すれば、リチウム
イオン二次電池の電池の重量エネルギー密度をさらに高
めることができるため、リチウムイオン二次電池の使用
範囲をさらに広げることができる。特に正極板及び負極
板を電解質層を介して積層した状態で巻回するリチウム
イオン二次電池に適用すれば、電池の重量エネルギー密
度を有効的に高くすることができる。本発明をリチウム
イオン二次電池に適用する場合は、正極集電体の導電性
薄膜として、アルミニウム薄膜を用い、負極集電体の導
電性薄膜として、銅薄膜を用いればよい。The present invention can be applied to various types of batteries, but if the present invention is applied to a lithium ion secondary battery, the weight energy density of the battery of the lithium ion secondary battery can be further increased. The use range of the secondary battery can be further expanded. Especially when it is applied to a lithium ion secondary battery in which a positive electrode plate and a negative electrode plate are wound in a state of being laminated via an electrolyte layer, the weight energy density of the battery can be effectively increased. When the present invention is applied to a lithium ion secondary battery, an aluminum thin film may be used as the conductive thin film of the positive electrode current collector, and a copper thin film may be used as the conductive thin film of the negative electrode current collector.
【００１１】なお、樹脂製フィルムの両面に導電性薄膜
を形成する場合は、極板の端子は、それぞれの導電性薄
膜に接続するように形成する。また集電構成体にスルー
ホールを形成して両面の導電性薄膜を電気的に導通させ
たり、樹脂製フィルムの端部にも導電性薄膜を形成し
て、両面の導電性薄膜を電気的に導通させた場合には、
極板の端子は、両面の導電性薄膜のいずれか一方に接続
するように形成すればよい。When conductive thin films are formed on both sides of the resin film, the terminals of the electrode plate are formed so as to be connected to the respective conductive thin films. In addition, a through hole is formed in the current collecting structure to electrically connect the conductive thin films on both sides, or a conductive thin film is also formed at the end of the resin film to electrically connect the conductive thin films on both sides. When conducting,
The terminal of the electrode plate may be formed so as to be connected to either one of the conductive thin films on both sides.
【００１２】[0012]
【実施例】以下、図面を参照して巻回式リチウムイオン
二次電池に適用した本発明の実施例を詳細に説明する。
図１は、本実施例の巻回式リチウムイオン二次電池の縦
断端面図である。本図に示すように、本実施例の巻回式
リチウムイオン二次電池は、巻回式極板群１が電池缶２
内に収納された構造を有している。巻回式極板群１は、
正極板３と負極板４とが電解質層５を介して積層するよ
うに巻回された構造を有している。正極板３は、正極集
電構成体６の両面に正極活物質層７，７が形成されて構
成されており、０．２２ｍｍ×５０ｍｍ×４５０ｍｍの
寸法を有している。正極集電構成体６は、図２の拡大断
面図に示すように、厚み１０μｍのポリエチレンテレフ
タレート（ＰＥＴ）のフィルム６ａの両面に厚み１μｍ
の集電体（アルミニウム蒸着層）６ｂ，６ｂが形成され
て構成されている。本実施例では、次のようにして蒸着
を行った。まず、蒸着室内でフィルム６ａとアルミニウ
ムを巻き付けたタングステンフィラメントとを約１０ｃ
ｍの距離で相互に対向するように配置する。次に蒸着室
内を真空ポンプで減圧して蒸着室内を１０-5〜１０-6mm
Hgの真空状態にした。次にタングステンフィラメントに
電流を流し、一次加熱によりタングステンフィラメント
に付着している不純物をガス化して除去してから、二次
加熱によりアルミニウムを蒸気化した。これにより、フ
ィルム６ａの両面にアルミニウム蒸着層６ｂ，６ｂを形
成した。正極活物質層７は、ＬｉＣｏＯ2 （リチウムイ
オンを吸蔵放出する物質）とグラファイトからなる導電
助剤とポリフッ化ビニリデン（ＰＶＤＦ）からなるバイ
ンダとの混合物により形成されている。正極活物質層７
は１００μｍの厚みを有しており、内部に非水電解液が
含浸されている。本実施例では、次のようにして正極活
物質層７を形成した。まず、ＬｉＣｏＯ2 とグラファイ
トとＰＶＤＦとを８０：１０：１０の重量比で混合し、
これにＮ−メチル−２−ピロリドンからなる分散溶媒を
適量加え、これを十分に混練した。これにより、ＬｉＣ
ｏＯ2 とグラファイトとＰＶＤＦとがＮ−メチル−２−
ピロリドン中に分散したいわゆるインク状の混練物を作
った。次に、この混練物をロールトゥロールの転写によ
り正極集電構成体６の両面に塗着してから、これを乾燥
して正極集電構成体６の両面に正極活物質層７を形成し
た。Embodiments of the present invention applied to a wound type lithium ion secondary battery will be described in detail below with reference to the drawings.
FIG. 1 is a vertical cross-sectional end view of a winding type lithium ion secondary battery of this example. As shown in the figure, in the winding type lithium ion secondary battery of the present embodiment, the winding type electrode plate group 1 has a battery can 2
It has a structure housed inside. The wound electrode group 1
It has a structure in which the positive electrode plate 3 and the negative electrode plate 4 are wound so as to be laminated via the electrolyte layer 5. The positive electrode plate 3 is configured by forming the positive electrode active material layers 7 on both surfaces of the positive electrode current collector structure 6, and has dimensions of 0.22 mm × 50 mm × 450 mm. As shown in the enlarged cross-sectional view of FIG. 2, the positive electrode current collector structure 6 has a thickness of 1 μm on both surfaces of a film 6a of polyethylene terephthalate (PET) having a thickness of 10 μm.
The current collectors (aluminum vapor deposition layer) 6b, 6b are formed and configured. In this example, vapor deposition was performed as follows. First, about 10c of the film 6a and a tungsten filament wound with aluminum are deposited in the vapor deposition chamber.
They are arranged so as to face each other at a distance of m. Next, the pressure inside the deposition chamber is reduced by a vacuum pump and the inside of the deposition chamber is reduced by 10 -5 to 10 -6 mm.
A vacuum of Hg was applied. Next, an electric current was passed through the tungsten filament to gasify and remove impurities adhering to the tungsten filament by primary heating, and then aluminum was vaporized by secondary heating. Thereby, aluminum vapor deposition layers 6b and 6b were formed on both surfaces of the film 6a. The positive electrode active material layer 7 is formed of a mixture of LiCoO 2 (a substance that absorbs and releases lithium ions), a conductive auxiliary agent made of graphite, and a binder made of polyvinylidene fluoride (PVDF). Positive electrode active material layer 7
Has a thickness of 100 μm and is impregnated with a non-aqueous electrolyte solution inside. In this example, the positive electrode active material layer 7 was formed as follows. First, LiCoO 2 , graphite and PVDF were mixed at a weight ratio of 80:10:10,
An appropriate amount of a dispersion solvent composed of N-methyl-2-pyrrolidone was added to this, and this was sufficiently kneaded. This allows LiC
oO 2 , graphite and PVDF are N-methyl-2-
A so-called ink-like kneaded material dispersed in pyrrolidone was prepared. Next, this kneaded material was applied onto both surfaces of the positive electrode current collector structure 6 by roll-to-roll transfer, and then dried to form the positive electrode active material layer 7 on both surfaces of the positive electrode current collector structure 6. .
【００１３】負極板４は、負極集電構成体８の両面に負
極材層９，９が形成されて構成されており、０．２２ｍ
ｍ×５０ｍｍ×４５０ｍｍの寸法を有している。負極集
電構成体８も正極集電構成体６と同様に、図２の拡大断
面図に示すように、厚み１０μｍのポリエチレンテレフ
タレート（ＰＥＴ）のフィルム８ａの両面に厚み１μｍ
の集電体（銅蒸着層）８ｂ，８ｂが形成されて構成され
ている。本実施例では、アルミニウムの代りに銅を用
い、その他は正極集電構成体６と同様に真空蒸着を行っ
て、フィルム８ａの両面に銅蒸着層８ｂ，８ｂを形成し
た。負極材層９は、リチウムイオンを吸蔵放出する平均
粒径５μｍのグラファイトとポリフッ化ビニリデン（Ｐ
ＶＤＦ）からなるバインダとの混合物により形成されて
いる。負極材層９は、１００μｍの厚みを有しており、
内部に非水電解液が含浸されている。本実施例では、次
のようにして負極材層９を形成した。まず、グラファイ
トとＰＶＤＦとを９０：１０の重量比で混合し、これに
Ｎ−メチル−２−ピロリドンからなる分散溶媒を適量加
え、これを十分に混練した。これにより、グラファイト
とＰＶＤＦとがＮ−メチル−２−ピロリドン中に分散し
たいわゆるインク状の混練物を作った。次にこの混練物
をロールトゥロールの転写により負極集電構成体８の両
面に塗着してから、これを乾燥して負極集電構成体８の
両面に負極材層９を形成した。The negative electrode plate 4 is constructed by forming negative electrode material layers 9, 9 on both surfaces of a negative electrode current collecting structure 8 and having a thickness of 0.22 m.
It has dimensions of m × 50 mm × 450 mm. Similarly to the positive electrode current collecting component 6, the negative electrode current collecting component 8 has a thickness of 1 μm on both sides of a polyethylene terephthalate (PET) film 8a having a thickness of 10 μm, as shown in the enlarged cross-sectional view of FIG.
Current collectors (copper vapor-deposited layers) 8b, 8b are formed and configured. In this example, copper was used instead of aluminum, and otherwise vacuum vapor deposition was performed in the same manner as in the positive electrode current collector structure 6 to form copper vapor deposition layers 8b and 8b on both surfaces of the film 8a. The negative electrode material layer 9 is made of graphite and polyvinylidene fluoride (P) having an average particle diameter of 5 μm that absorbs and releases lithium ions.
VDF) and a mixture with a binder. The negative electrode material layer 9 has a thickness of 100 μm,
The inside is impregnated with a non-aqueous electrolyte. In this example, the negative electrode material layer 9 was formed as follows. First, graphite and PVDF were mixed at a weight ratio of 90:10, to which an appropriate amount of a dispersion solvent consisting of N-methyl-2-pyrrolidone was added, and this was sufficiently kneaded. As a result, a so-called ink-like kneaded material in which graphite and PVDF were dispersed in N-methyl-2-pyrrolidone was prepared. Next, this kneaded material was applied onto both surfaces of the negative electrode current collector structure 8 by roll-to-roll transfer, and then dried to form the negative electrode material layer 9 on both surfaces of the negative electrode current collector structure 8.
【００１４】電解質層５は、微多孔性のポリエチレンフ
ィルムからなるセパレータに非水電解液が含浸されて構
成されており、１０μｍの厚みを有している。非水電解
液は、炭酸エチレンと炭酸ジエテレンとを１：１の体積
比で混合した溶媒に電解液全体に対して１モル／ｌのＬ
ｉＰＦ6 を加えて作った。The electrolyte layer 5 is formed by impregnating a separator made of a microporous polyethylene film with a non-aqueous electrolytic solution and has a thickness of 10 μm. The non-aqueous electrolyte is a solvent in which ethylene carbonate and diethylene carbonate are mixed at a volume ratio of 1: 1 and 1 mol / l of L is added to the whole electrolyte.
It was made by adding iPF 6 .
【００１５】正極集電構成体６は、正極タブ端子１０を
介して電池缶２の正極キャップ２ａに電気的に接続され
ている。また負極集電構成体８は負極タブ端子１１を介
して電池缶２の負極缶部２ｂに電気的に接続されてい
る。正極タブ端子１０は、正極集電構成体６のフィルム
６ａの両面に形成されたアルミニウム蒸着層６ｂ，６ｂ
の両方と正極キャップ２ａとを電気的に接続している。
また負極タブ端子１１も負極集電構成体８のフィルム８
ａの両面に形成された銅蒸着層８ｂ，８ｂの両方と負極
缶部２ｂとを電気的に接続している。なお、正極集電構
成体６及び負極集電構成体８にスルーホールを形成して
両面の導電性薄膜を電気的に導通させたり、フィルム６
ａ，８ａの端部にも導電性薄膜を形成して、両面の導電
性薄膜を電気的に導通させることもできる。この場合に
は、正極タブ端子及び負極タブ端子は、両面の導電性薄
膜のいずれか一方に接続するように形成すればよい。The positive electrode current collector structure 6 is electrically connected to the positive electrode cap 2a of the battery can 2 via the positive electrode tab terminal 10. Further, the negative electrode current collector structure 8 is electrically connected to the negative electrode can portion 2b of the battery can 2 via the negative electrode tab terminal 11. The positive electrode tab terminal 10 includes aluminum vapor deposition layers 6b and 6b formed on both surfaces of the film 6a of the positive electrode current collector structure 6.
And the positive electrode cap 2a are electrically connected to each other.
The negative electrode tab terminal 11 is also the film 8 of the negative electrode current collector structure 8.
Both the copper vapor-deposited layers 8b, 8b formed on both surfaces of a and the negative electrode can portion 2b are electrically connected. In addition, a through hole may be formed in the positive electrode current collecting structure 6 and the negative electrode current collecting structure 8 to electrically connect the conductive thin films on both surfaces, or the film 6
It is also possible to form a conductive thin film on the ends of a and 8a so that the conductive thin films on both sides are electrically connected. In this case, the positive electrode tab terminal and the negative electrode tab terminal may be formed so as to be connected to either one of the conductive thin films on both surfaces.
【００１６】本実施例の電池の組立は次のようにして行
った。まず、正極タブ端子１０及び負極タブ端子１１を
取り付けた巻回式極板群１を電池缶２の負極缶部２ｂ内
に配置してから、正極タブ端子１０を正極キャップ２ａ
に溶接し、負極タブ端子１１を負極缶部２ｂの内壁に溶
接した。次に負極缶部２ｂに非水電解液を注液して、両
極板及びセパレータに非水電解液を含浸した。次に負極
缶部２ｂの開口部に絶縁性ガスケット１２を介して正極
キャップ２ａをかしめて本実施例の電池を完成した。The battery of this embodiment was assembled as follows. First, the wound electrode plate group 1 to which the positive electrode tab terminal 10 and the negative electrode tab terminal 11 are attached is arranged in the negative electrode can portion 2b of the battery can 2, and then the positive electrode tab terminal 10 is attached to the positive electrode cap 2a.
Then, the negative electrode tab terminal 11 was welded to the inner wall of the negative electrode can portion 2b. Next, the nonaqueous electrolytic solution was injected into the negative electrode can portion 2b to impregnate the electrode plates and the separator with the nonaqueous electrolytic solution. Next, the positive electrode cap 2a was caulked in the opening of the negative electrode can 2b through the insulating gasket 12 to complete the battery of this example.
【００１７】次に本実施例の電池の特性を調べるため
に、比較例の電池を作り、本実施例及び比較例の各電池
を用いて試験を行った。比較例の電池は、正極集電構成
体６の代りに正極集電構成体６と同じ厚み（２０μｍ）
のアルミニウム箔を用い、負極集電構成体８の代りに負
極集電構成体８と同じ厚み（２０μｍ）の銅箔を用い、
その他は本実施例の電池と同様にして作った。Next, in order to investigate the characteristics of the battery of this example, a battery of a comparative example was made and a test was conducted using each battery of this example and the comparative example. The battery of the comparative example has the same thickness (20 μm) as the positive electrode current collecting structure 6 instead of the positive electrode current collecting structure 6.
Of aluminum foil, and a copper foil having the same thickness (20 μm) as the negative electrode current collecting component 8 is used instead of the negative electrode current collecting component 8.
Others were made in the same manner as the battery of this example.
【００１８】そして、本実施例及び比較例の各電池を２
５℃において、４．２Ｖ（上限電流１００ｍＡ）で２０
時間の定電圧充電した後に、２５℃において１００ｍＡ
（終止電圧２．８Ｖ）の定電流で放電を行った。両電池
共１２００ｍＡｈの容量が得られた。また、各電池の容
量及び放電電圧から各電池の重量エネルギー密度を求め
た。表１はその測定結果を示している。Then, each of the batteries of this example and the comparative example was replaced by 2
20 at 4.2V (upper current 100mA) at 5 ° C
100mA at 25 ° C after constant voltage charging for 25 hours
Discharge was performed with a constant current (final voltage 2.8 V). A capacity of 1200 mAh was obtained for both batteries. The weight energy density of each battery was determined from the capacity and discharge voltage of each battery. Table 1 shows the measurement results.
【００１９】[0019]
【表１】 本表より、本実施例の電池は、放電容量が比較例の電池
と同じであるものの、電池重量を軽くできるため、重量
エネルギー密度を高められるのが分る。ＰＥＴの密度
（１．３８）は、アルミニウムの密度（２．７）及び銅
の密度（８．９２）に比べて小さいため、本実施例の電
池は、比較例の電池に比べて集電構成体の重量を軽くし
て、電池の重量を軽くできる。[Table 1] From this table, it can be seen that the battery of this example has the same discharge capacity as the battery of the comparative example, but the battery weight can be reduced, and therefore the weight energy density can be increased. Since the density of PET (1.38) is smaller than the density of aluminum (2.7) and the density of copper (8.92), the battery of this example has a current collecting configuration as compared with the battery of the comparative example. The weight of the battery can be reduced by reducing the weight of the body.
【００２０】またＰＥＴは７３０ kg/cm2 の引っ張り強
さを有しているので、アルミニウムの引っ張り強さ（７
×１０5 kg/cm2 ）及び銅の引っ張り強さ（１１０×１
０9kg/cm2 ）に比べて小さいが、ＰＥＴは、活物質の塗
着及び極板の巻回において集電体に加わる力（４〜５ k
g/cm2 ）に十分耐えられる強度を有している。Further, since PET has a tensile strength of 730 kg / cm 2 , the tensile strength of aluminum (7
× 10 5 kg / cm 2 ) and the tensile strength of copper (110 × 1)
Although it is smaller than that of PET ( 9 kg / cm 2 ), PET has a force (4 to 5 k) applied to the current collector during application of the active material and winding of the electrode plate.
It has enough strength to endure g / cm 2 ).
【００２１】なお本実施例では、正極集電体及び負極集
電体の両方を樹脂製フィルムの表面に形成された導電性
薄膜により構成したが、正極集電体及び負極集電体の少
なくとも一方をこのように構成しても構わない。In this embodiment, both the positive electrode current collector and the negative electrode current collector are made of the conductive thin film formed on the surface of the resin film, but at least one of the positive electrode current collector and the negative electrode current collector is used. May be configured in this way.
【００２２】以下、明細書に記載した発明についてその
構成を示す。The structure of the invention described in the specification will be shown below.
【００２３】（１） 正極集電体にリチウムイオンを吸
蔵放出するＬｉＣｏＯ2 が充填されてなる正極板と、負
極集電体にリチウムイオンを吸蔵放出するグラファイト
が充填されてなる負極板とが非水電解液を含有する電解
質層を介して積層された状態で巻回されてなる巻回式リ
チウム二次電池において、前記正極集電体は、ポリエチ
レンテレフタレートの両面に形成されたアルミニウム蒸
着膜より構成されてなり、前記負極板集電体は、ポリエ
チレンテレフタレートの両面に形成された銅蒸着膜によ
り構成されていることを特徴とする巻回式リチウム二次
電池。(1) A positive electrode plate in which a positive electrode current collector is filled with LiCoO 2 that absorbs and releases lithium ions and a negative electrode plate in which a negative electrode current collector is filled with graphite that absorbs and releases lithium ions are not included. In a wound type lithium secondary battery which is wound in a state of being laminated via an electrolyte layer containing a water electrolyte, the positive electrode current collector is composed of an aluminum vapor deposition film formed on both surfaces of polyethylene terephthalate. The wound lithium secondary battery, wherein the negative electrode current collector is composed of a copper vapor deposition film formed on both surfaces of polyethylene terephthalate.
【００２４】[0024]
【発明の効果】樹脂製フィルムまたは樹脂製シートは、
従来用いていたアルミ箔、銅箔等の金属箔に比べて比重
が小さいので、導電性薄膜を表面に形成した樹脂製フィ
ルムまたは樹脂製シート（集電構成体）は、従来の集電
体に比べて軽い。しかも樹脂製フィルムは従来の集電体
（金属箔）に劣らない可撓性及び強度を有しているの
で、集電構成体は、従来の集電体と同様の強度を維持す
ることができる。そのため、本発明によれば、集電体の
強度を低下させることなく、電池の重量エネルギー密度
を高めることができる。The resin film or resin sheet is
Compared with metal foils such as aluminum foil and copper foil used conventionally, the specific gravity is smaller, so resin film or resin sheet (current collector) with conductive thin film formed on its surface can be used as a conventional current collector. Lighter than Moreover, since the resin film has flexibility and strength comparable to that of the conventional current collector (metal foil), the current collecting component can maintain the same strength as the conventional current collector. . Therefore, according to the present invention, the weight energy density of the battery can be increased without lowering the strength of the current collector.
【図１】 本発明の実施例の巻回式リチウム二次電池の
縦断端面図である。FIG. 1 is a vertical cross-sectional end view of a winding type lithium secondary battery according to an embodiment of the present invention.
【図２】 本発明の実施例の巻回式リチウム二次電池に
用いる集電構成体の拡大断面図である。FIG. 2 is an enlarged cross-sectional view of a current collecting structure used in a wound type lithium secondary battery according to an example of the present invention.
３ 正極板 ４ 負極板 ５ 電解質層 ６ 正極集電構成体 ６ａ フィルム ６ｂ アルミニウム蒸着層（正極集電体） ７ 正極活物質層 ８ 負極集電構成体 ８ａ フィルム ８ｂ 銅蒸着層（負極集電体） ９ 負極材層 3 Positive Electrode Plate 4 Negative Electrode Plate 5 Electrolyte Layer 6 Positive Electrode Current Collector 6a Film 6b Aluminum Vapor Deposition Layer (Positive Electrode Current Collector) 7 Positive Electrode Active Material Layer 8 Negative Electrode Current Collector 8a Film 8b Copper Vapor Deposition Layer (Negative Electrode Current Collector) 9 Negative electrode material layer
Claims (6)
層されてなる電池において、 前記正極板及び前記負極板の少なくとも一方の集電体
は、樹脂製フィルムまたは樹脂製シートの表面に形成さ
れた導電性薄膜により構成されていることを特徴とする
電池。1. A battery comprising a positive electrode plate and a negative electrode plate laminated with an electrolyte layer in between, wherein at least one of the positive electrode plate and the negative electrode plate has a current collector on the surface of a resin film or a resin sheet. A battery comprising the formed conductive thin film.
たは樹脂製シートの両面に形成され、 前記正極板及び前記負極板は、前記電解質層を介して積
層された状態で巻回されていることを特徴とする請求項
１に記載の電池。2. The conductive thin film is formed on both surfaces of the resin film or resin sheet, and the positive electrode plate and the negative electrode plate are wound in a state of being laminated with the electrolyte layer interposed therebetween. The battery according to claim 1, wherein the battery is a battery.
いることを特徴とする請求項１または２に記載の電池。3. The battery according to claim 1, wherein the conductive thin film is formed by vapor deposition.
する物質が充填されてなる正極板と、負極集電体にリチ
ウムイオンを吸蔵放出する炭素材料が充填されてなる負
極板とが電解質層を介して積層されてなるリチウムイオ
ン二次電池において、 前記正極集電体及び前記負極板集電体の少なくとも一方
は、樹脂製フィルムまたは樹脂製シートの表面に形成さ
れた導電性薄膜により構成されていることを特徴とする
リチウムイオン二次電池。4. An electrolyte layer comprising a positive electrode plate in which a positive electrode current collector is filled with a substance that absorbs and releases lithium ions, and a negative electrode plate in which a negative electrode current collector is filled with a carbon material that absorbs and releases lithium ions. In a lithium-ion secondary battery laminated via, at least one of the positive electrode current collector and the negative electrode plate current collector is formed of a conductive thin film formed on the surface of a resin film or a resin sheet. The lithium-ion secondary battery is characterized by
たは樹脂製シートの両面に形成され、 前記正極板及び前記負極板は、前記電解質層を介して積
層された状態で巻回されていることを特徴とする請求項
４に記載のリチウムイオン二次電池。5. The conductive thin film is formed on both sides of the resin film or resin sheet, and the positive electrode plate and the negative electrode plate are wound in a state of being laminated with the electrolyte layer interposed therebetween. The lithium ion secondary battery according to claim 4.
いることを特徴とする請求項４または５に記載のリチウ
ムイオン二次電池。6. The lithium ion secondary battery according to claim 4, wherein the conductive thin film is formed by vapor deposition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8013543A JPH09213338A (en) | 1996-01-30 | 1996-01-30 | Battery and lithium ion secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8013543A JPH09213338A (en) | 1996-01-30 | 1996-01-30 | Battery and lithium ion secondary battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09213338A true JPH09213338A (en) | 1997-08-15 |
Family
ID=11836079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8013543A Pending JPH09213338A (en) | 1996-01-30 | 1996-01-30 | Battery and lithium ion secondary battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09213338A (en) |
Cited By (30)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US11611081B2 (en) | 2019-05-31 | 2023-03-21 | Contemporary Amperex Technology Co., Limited | Lithium ion secondary battery, battery core, negative electrode plate, and apparatus |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05314969A (en) * | 1992-05-12 | 1993-11-26 | Yuasa Corp | Manufacture of battery |
| JPH05314984A (en) * | 1992-05-12 | 1993-11-26 | Yuasa Corp | Current collector body for battery |
| JPH09120818A (en) * | 1995-10-26 | 1997-05-06 | Sony Corp | Nonaqueous electrolyte secondary battery |
-
1996
- 1996-01-30 JP JP8013543A patent/JPH09213338A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05314969A (en) * | 1992-05-12 | 1993-11-26 | Yuasa Corp | Manufacture of battery |
| JPH05314984A (en) * | 1992-05-12 | 1993-11-26 | Yuasa Corp | Current collector body for battery |
| JPH09120818A (en) * | 1995-10-26 | 1997-05-06 | Sony Corp | Nonaqueous electrolyte secondary battery |
Cited By (47)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999050918A1 (en) * | 1998-03-26 | 1999-10-07 | Tdk Corporation | Electrode for cell, method of manufacturing the same and cell |
| US6447950B1 (en) | 1998-03-26 | 2002-09-10 | Tdk Corporation | Electrode for battery, method of manufacturing the same and battery |
| JP2000100443A (en) * | 1998-09-25 | 2000-04-07 | Mitsubishi Chemicals Corp | Electrode base material film for secondary battery and secondary battery |
| JP2000195523A (en) * | 1998-12-24 | 2000-07-14 | Kao Corp | Nonaqueous secondary battery |
| WO2000042669A1 (en) * | 1999-01-14 | 2000-07-20 | Fujitsu Limited | Lithium secondary cell |
| JP3696790B2 (en) * | 1999-01-14 | 2005-09-21 | 富士通株式会社 | Lithium secondary battery |
| JP2003031224A (en) * | 2001-04-10 | 2003-01-31 | Toyo Kohan Co Ltd | Light-weight current collector for secondary battery |
| JP2004055537A (en) * | 2002-05-30 | 2004-02-19 | Matsushita Electric Ind Co Ltd | Lithium ion secondary battery |
| US7935445B2 (en) | 2002-05-30 | 2011-05-03 | Panasonic Corporation | Lithium ion secondary battery |
| US7335448B2 (en) * | 2002-05-30 | 2008-02-26 | Matsushita Electric Industrial Co., Ltd. | Lithium ion secondary battery |
| JP4617065B2 (en) * | 2002-05-30 | 2011-01-19 | パナソニック株式会社 | Lithium ion secondary battery |
| CN1324757C (en) * | 2002-05-30 | 2007-07-04 | 松下电器产业株式会社 | Lithium ion secondary battery |
| US7258948B2 (en) * | 2003-02-26 | 2007-08-21 | Sanyo Electric Co., Ltd. | Non-aqueous electrolyte secondary battery and manufacturing methods of an electrode used therein |
| KR100497249B1 (en) * | 2003-04-28 | 2005-06-23 | 삼성에스디아이 주식회사 | Lithium ion secondary battery |
| US7736809B2 (en) | 2003-09-26 | 2010-06-15 | Samsung Sdi Co., Ltd. | Rechargeable lithium ion battery |
| US7560192B2 (en) | 2003-09-26 | 2009-07-14 | Samsung Sdi Co., Ltd. | Rechargeable lithium ion battery |
| JP2005108835A (en) * | 2003-09-26 | 2005-04-21 | Samsung Sdi Co Ltd | Rechargeable lithium-ion secondary battery |
| KR101030840B1 (en) * | 2004-09-22 | 2011-04-22 | 삼성에스디아이 주식회사 | Electrode Plate of Li Secondary Battery and Method of fabricating the same |
| KR100646534B1 (en) * | 2005-03-07 | 2006-11-23 | 삼성에스디아이 주식회사 | Electrode Plate of Li Secondary Battery and Li Secondary Battery with the same |
| US8663832B2 (en) | 2007-08-15 | 2014-03-04 | Nissan Motor Co., Ltd. | Cell for reducing short circuit and battery incorporating the cell |
| EP2026403A3 (en) * | 2007-08-15 | 2009-04-29 | Nissan Motor Co., Ltd. | Cell and battery incorporating the cell |
| JP2008100910A (en) * | 2007-11-05 | 2008-05-01 | Nippon Chem Ind Co Ltd | Cobalt oxide for lithium secondary battery positive electrode active material |
| JP5371979B2 (en) * | 2008-06-23 | 2013-12-18 | シャープ株式会社 | Lithium ion secondary battery |
| JPWO2009157263A1 (en) * | 2008-06-23 | 2011-12-08 | シャープ株式会社 | Lithium ion secondary battery |
| WO2009157263A1 (en) * | 2008-06-23 | 2009-12-30 | シャープ株式会社 | Lithium ion secondary battery |
| WO2010016432A1 (en) * | 2008-08-08 | 2010-02-11 | シャープ株式会社 | Battery |
| JP4649502B2 (en) * | 2008-08-08 | 2011-03-09 | シャープ株式会社 | Lithium ion secondary battery |
| JP2010040489A (en) * | 2008-08-08 | 2010-02-18 | Sharp Corp | Lithium-ion secondary battery |
| WO2010048181A2 (en) * | 2008-10-21 | 2010-04-29 | Johnson Controls - Saft Advanced Power Solutions Llc | Improved electrode configuration for batteries |
| WO2010048181A3 (en) * | 2008-10-21 | 2010-07-08 | Johnson Controls - Saft Advanced Power Solutions Llc | Improved electrode configuration for batteries |
| CN102224619A (en) * | 2008-10-21 | 2011-10-19 | 江森自控帅福得先进能源动力***有限责任公司 | Improved electrode configuration for batteries |
| US8785041B2 (en) | 2008-12-19 | 2014-07-22 | Nissan Motor Co., Ltd. | Electrode and production method thereof |
| RU2497239C2 (en) * | 2008-12-19 | 2013-10-27 | Ниссан Мотор Ко., Лтд. | Electrode and its manufacturing method |
| JP2011134514A (en) * | 2009-12-23 | 2011-07-07 | Mitsubishi Shindoh Co Ltd | Collector for lithium ion battery and manufacturing method thereof |
| JP2013534694A (en) * | 2010-05-20 | 2013-09-05 | エルジー・ケム・リミテッド | Cable type secondary battery having polymer-coated polymer current collector |
| WO2012127561A1 (en) * | 2011-03-18 | 2012-09-27 | 株式会社日立製作所 | Non-aqueous electrolyte battery |
| JP2019102428A (en) * | 2017-12-05 | 2019-06-24 | 寧徳時代新能源科技股▲分▼有限公司Ｃｏｎｔｅｍｐｏｒａｒｙ Ａｍｐｅｒｅｘ Ｔｅｃｈｎｏｌｏｇｙ Ｃｏ．， Ｌｉｍｉｔｅｄ | battery |
| JP2021082612A (en) * | 2019-04-26 | 2021-05-27 | 寧徳時代新能源科技股▲分▼有限公司Ｃｏｎｔｅｍｐｏｒａｒｙ Ａｍｐｅｒｅｘ Ｔｅｃｈｎｏｌｏｇｙ Ｃｏ．， Ｌｉｍｉｔｅｄ | battery |
| JP2020184497A (en) * | 2019-04-26 | 2020-11-12 | 寧徳時代新能源科技股▲分▼有限公司Ｃｏｎｔｅｍｐｏｒａｒｙ Ａｍｐｅｒｅｘ Ｔｅｃｈｎｏｌｏｇｙ Ｃｏ．， Ｌｉｍｉｔｅｄ | battery |
| US11611081B2 (en) | 2019-05-31 | 2023-03-21 | Contemporary Amperex Technology Co., Limited | Lithium ion secondary battery, battery core, negative electrode plate, and apparatus |
| US11646424B2 (en) | 2019-05-31 | 2023-05-09 | Contemporary Amperex Technology Co., Limited | Lithium-ion secondary battery |
| CN110600745A (en) * | 2019-09-05 | 2019-12-20 | 东莞市烯热材料科技有限公司 | Preparation method of novel polyimide composite negative current collector for lithium ions |
| KR20210061113A (en) | 2019-11-19 | 2021-05-27 | 주식회사 엘지화학 | The Electrode Assembly And The Method For Thereof |
| CN111411233A (en) * | 2020-03-30 | 2020-07-14 | 安徽元琛环保科技股份有限公司 | Method for separating waste lithium battery positive electrode material and current collector by vacuum aluminum evaporation |
| CN111411233B (en) * | 2020-03-30 | 2021-09-14 | 安徽元琛环保科技股份有限公司 | Method for separating waste lithium battery positive electrode material and current collector by vacuum aluminum evaporation |
| KR20220147029A (en) | 2021-04-26 | 2022-11-02 | 프라임 플래닛 에너지 앤드 솔루션즈 가부시키가이샤 | Electrode current collector and secondary battery |
| WO2023190871A1 (en) * | 2022-03-31 | 2023-10-05 | パナソニックＩｐマネジメント株式会社 | Secondary battery |
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