JP3378178B2 - Lithium polymer battery - Google Patents
Lithium polymer batteryInfo
- Publication number
- JP3378178B2 JP3378178B2 JP25526297A JP25526297A JP3378178B2 JP 3378178 B2 JP3378178 B2 JP 3378178B2 JP 25526297 A JP25526297 A JP 25526297A JP 25526297 A JP25526297 A JP 25526297A JP 3378178 B2 JP3378178 B2 JP 3378178B2
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- electrode
- lithium
- shaped
- positive
- 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.)
- Expired - Fee Related
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
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は、リチウムポリマー
電池に係り、さらに詳しくはリチウムポリマー電池の小
形化に関する。
【０００２】
【従来の技術】携帯型の電話機やテレビカメラなどの電
源としては、小形、軽量、薄型化や大容量、高電圧など
が求められており、たとえば、正極層、ポリマ−電解質
層および負極層を重ね合わせ、シート状（薄型）に一体
化した構成の電極要素（電池要素）を備えた厚さ 0.5mm
程度のリチウム非水溶媒電池も知られている（たとえば
米国特許第 5,296,318号明細書）。
【０００３】図３は、前記ポリマー電解質電池の要部構
成を断面的に示したものである。
【０００４】図３において、１はセパレーターの機能を
する電解質保持性のポリマ−電解質系（たとえばヘキサ
フロロプロピレン−フッ化ビニリデン共重合体などのポ
リマと、リチウム塩などのエチレンカーボネート溶液…
非水電解液…との系）、２は金属酸化物などの活物質、
非水電解液および電解質保持性ポリマーを含む正極層を
集電体に積層して成る正極、３はリチウムイオンを吸蔵
・放出する活物質、非水電解液および電解質保持性ポリ
マーを含む負極層を集電体に積層して成る負極でる。ま
た、４，５は前記セパレーター１、正極２および負極３
の積層体から成る電池要素を対応する電極端子2a、3aを
外部に導出しながら封装し、保護する外装樹脂フィルム
から成るシール層（封止層）である。
【０００５】なお、正極集電体は、たとえばアルミニウ
ム箔、アルミニウムメッシュ、アルミニウム製エキスバ
ンドメタル、アルミニウム製パンチメタルなどであり、
これらに電極端子となるアルミニウム箔片を溶接した構
成と成っている。一方、負極集電体は、銅箔、銅製エキ
スバンドメタル、銅製パンチメタルなどであり、これら
に電極端子となる銅箔片を溶接した構成と成っている。
【０００６】ここで、正極２の活物質としては、リチウ
ムイオンを吸蔵・放出するリチウム含有金属酸化物、た
とえばリチウムマンガン複合酸化物、リチウム含有コバ
ルト酸化物、リチウム含有ニッケルコバルト酸化物、リ
チウムを含む非晶質五酸化バナジウムや、二酸化マンガ
ン、カルコゲン化合物などが挙げられる。
【０００７】また、負極活物質としては、たとえばビス
フェノール樹脂、ポリアクリロニトリル、セルローズな
どの焼成物、コークスやピッチの焼成物が挙げられ、こ
れらは天然もしくは人工グラファイト、カーボンブラッ
ク、アセチレンブラック，ケッチェンブラック、ニッケ
ル粉末、ニッケル粉末などを含有した形態を採ってもよ
い。
【０００８】さらに、電解質系１は、たとえばエチレン
カーボネート、プロピレンカーボネート、ブチレンカー
ボネート、ジメチルカーボネート、ジエチルカーボネー
ト、メチルエチルカーボネートなどの非水溶媒に、過塩
素酸リチウム、六フッ化リン酸リチウム、ホウ四フッ化
リチウム、六フッ化ヒ素リチウム、トリフルオロメタン
スルホン酸リチウムなどを 0.2〜 2mol/ l程度に溶解さ
せたものが挙げられる。 そして、この種の軽量、フレ
キシブルなリチウムポリマー電池の製造に当たっては、
電極要素である正極２、セパレータ（ポリマ−電解質
系）１および負極３を積層状に組み合わせる。その後、
電池要素の両面側に外装樹脂フィルム４，５を積層・配
置し、集電体に接続する各電極端子2a，3aを外部に導出
しながら、前記外装樹脂フィルム４，５の周縁部を溶
着、もしくは接着剤層を介して気密に接合・一体化して
封装することによって、シート状のリチウムポリマー電
池を製造している。
【０００９】
【発明が解決しようとする課題】しかしながら、上記構
成のリチウムポリマー電池の場合、次のような不都合が
ある。すなわち、シート状リチウムポリマー電池におい
ては、電極要素の各集電体に、それぞれ一端を接続した
電極端子2a，3aが、そのまま延設した形で外部に同一平
面を成して封止・導出されている。換言すると、少なく
とも電極端子2a，3aを封止・導出する辺においては、外
装樹脂フィルム４，５の溶着・接合封止に要する面積が
比較的大きく採られ、その分、リチウムポリマー電池の
コンパクト化が損なわれるか、あるいはリチウムポリマ
ー電池容量の低減となるなどの問題がある。
【００１０】本発明は、このような事情に対処してなさ
れたもので、よりコンパクト化もしくはより高容量化が
図られたリチウムポリマー電池の提供を目的とする。
【００１１】
【課題を解決するための手段】請求項１の発明は、リチ
ウム含有金属酸化物を活物質とし、かつ正極集電体を有
するシート状正極と、前記シート状正極主面に積層・配
置され、かつ電解液を担持するシート状セパレーター
と、前記シート状セパレーター主面に積層・配置された
リチウム金属もしくはリチウムを吸蔵・放出する炭素質
材を活物質とし、かつ負極集電体を有するシート状負極
と、前記シート状電極およびシート状セパレーターの積
層体から成る電極要素を液密に封装する外装樹脂フィル
ムと、前記シート状電極の集電体に一端がそれぞれ接続
し、他端が前記外装樹脂フィルムの一側縁側において前
記外装樹脂フィルム外に封止・導出された正・負両電極
端子とを有するリチウムポリマー電池であって、前記正
・負両電極端子は、電極要素の端面に沿わせて厚さ方向
に互いに近付く側にほぼ直角に折り曲げられ、かつ前記
電極要素の端面上の前記シート状セパレーターから厚さ
方向に離れた位置で前記リチウムポリマー電池主面に平
行して同一面をなして外装樹脂フィルム外に導出される
とともに、前記外装樹脂フィルムも前記電極要素の端面
において前記正・負両電極端子に沿って折り曲げられて
封止されていることを特徴とするリチウムポリマー電池
である。
【００１２】請求項１の発明において、正・負のシート
状電極、シート状セパレーターおよび外装樹脂フィルム
など、リチウムポリマー電池の各構成材料、リチウムポ
リマー電池の構造や形状などは、基本的に、従来の場合
と変わらない。
【００１３】
【発明の実施の形態】以下、図１および図２を参照して
実施例を説明する。
【００１４】図１は、実施例に係るリチウムポリマー電
池の要部構成を部一切り欠いて示す平面図、図２は図１
の A-A線に沿った断面図である。図１および図２におい
て、１は電解液を担持するシート状セパレーター、２は
前記シート状セパレーター１の一主面に積層・配置され
たリチウム含有金属酸化物を活物質とし、かつ正極集電
体を有するシート状正極、３は前記シート状セパレータ
ー１の他主面に積層・配置されたリチウム金属もしくは
リチウムを吸蔵・放出する炭素質材を活物質とし、かつ
負極集電体を有するシート状負極である。
【００１５】ここで、シート状セパレーター１は、電解
質保持性のポリマ、たとえばヘキサフロロプロピレン−
フッ化ビニリデン共重合体などのポリマ−電解質系であ
る。また、シート状の正極２は、リチウムを含む金属酸
化物などの活物質、電解質保持性ポリマーおよび正極集
電体で構成されており、シート状の負極は、たとえばリ
チウムイオンを吸蔵・放出する活物質、電解質保持性ポ
リマーをおよび負極集電体で構成されている。なお、正
極２は正極集電体に、アルミニウム箔片の一端を溶接・
接続して正電極端子2aが、負極３は負極集電体に、銅箔
片の一端を溶接・接続して負電極端子3aがそれぞれ配設
されている。そして、これら各シート状電極２，３およ
びシート状セパレーター１は、積層体化して電極要素を
形成している。
【００１６】さらに、４，５は前記シート状電極２，３
およびシート状セパレーター１の積層体から成る電極要
素を液密ないし気密に封装する外装樹脂フィルムであ
り、前記正・負両電極端子２ａ，３ａを液密ないし気密
に封止しながら、外装樹脂フィルム４，５で形成する封
装体外に導出されている。ただし、前記両電極端子２
ａ，３ａの封装体外への導出は、電極要素の端面に沿わ
せ、互いに近付く側にほぼ直角に折り曲げられ２ａ′，
３ａ′、かつ電極要素の端面上のシート状セパレーター
から離れた位置でリチウムポリマー電池主面に平行して
同一面をなして外装樹脂フィルム４，５外に封止・導出
されている。
【００１７】上記したように、電極端子2a，3aを電池要
素の端面に沿わせ、ほぼ直角に折り曲げられ2a′，3a′
て封装体外へ封止・導出したことにより、電極端子2a，
3aの延設が回避されるので、電極端子2a，3aの導出方向
の長さが短縮される。つまり、短縮した分がコンパクト
化されるし、また、短縮するスペース分を電極要素領域
として利用することによって電池容量を大きくできる。
【００１８】たとえば、電池外装36×67× 3.1mm、電極
要素32×54× 2.4mmのリチウムポリマー電池の場合、従
来の構成では、電池要素端面から電極端子2a，3a封止内
壁面の距離が10mmで、電池容量が 280 mAhであった。こ
れに対して、本発明の構成では、電池要素端面から電極
端子2a，3a封止内壁面の距離が 3mmで 7mm短縮してお
り、その短縮するスペース分を電極要素領域に拡大し
て、電池容量を 316 mAhとすることができた。
【００１９】なお、本発明は上記例示に限定されるもの
でなく、発明の趣旨を逸脱しない範囲でいろいろの変形
を採ることができる。たとえば電極要素の構成材料、外
装樹脂フィルムの材質、リチウムポリマー電池の形状な
ど、特に限定されるものでなく、従来知られている材質
などはいずれも使用できる。
【００２０】
【発明の効果】請求項１の発明によれば、リチウムポリ
マー電池の電極端子を封止・導出する領域辺の平面積が
低減化されるため、その低減部分の小形化を図ることが
できる。または、前記低減化領域に対応して電極要素を
大きく設定できるので、その分、リチウムポリマー電池
の大容量化を図ることができる。しかも、外装樹脂フィ
ルムから導出される電極端子は、振動などによる断線も
起こり難くなるので、信頼性の高いリチウムポリマー電
池が提供される。Description: BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a lithium polymer battery, and more particularly, to miniaturization of a lithium polymer battery. 2. Description of the Related Art Power supplies for portable telephones, television cameras, and the like are required to be small, lightweight, thin, large in capacity, high voltage, and the like. For example, a positive electrode layer, a polymer electrolyte layer, 0.5 mm thick with electrode elements (battery elements) that are configured by laminating the negative electrode layers and integrating them into a sheet (thin)
Some lithium non-aqueous solvent batteries are also known (eg, US Pat. No. 5,296,318). FIG. 3 is a cross-sectional view showing the structure of a main part of the polymer electrolyte battery. In FIG. 3, reference numeral 1 denotes an electrolyte-retaining polymer-electrolyte system which functions as a separator (for example, a polymer such as a hexafluoropropylene-vinylidene fluoride copolymer) and an ethylene carbonate solution such as a lithium salt.
A non-aqueous electrolyte solution), 2 is an active material such as a metal oxide,
A positive electrode formed by laminating a positive electrode layer containing a non-aqueous electrolyte and an electrolyte-retaining polymer on a current collector. It is a negative electrode laminated on a current collector. Reference numerals 4 and 5 denote the separator 1, the positive electrode 2 and the negative electrode 3, respectively.
Is a sealing layer (sealing layer) made of an exterior resin film that seals and protects the battery element made of the laminate of (1) while leading the corresponding electrode terminals 2a and 3a to the outside. The positive electrode current collector is, for example, aluminum foil, aluminum mesh, aluminum band metal, aluminum punch metal, or the like.
An aluminum foil piece serving as an electrode terminal is welded to these. On the other hand, the negative electrode current collector is a copper foil, a copper expanded metal, a copper punched metal, or the like, and has a configuration in which a copper foil piece serving as an electrode terminal is welded thereto. Here, the active material of the positive electrode 2 includes lithium-containing metal oxides that occlude and release lithium ions, such as lithium-manganese composite oxide, lithium-containing cobalt oxide, lithium-containing nickel-cobalt oxide, and lithium. Examples include amorphous vanadium pentoxide, manganese dioxide, and chalcogen compounds. Examples of the negative electrode active material include fired products such as bisphenol resin, polyacrylonitrile, and cellulose, and fired products of coke and pitch. These include natural or artificial graphite, carbon black, acetylene black, and Ketjen black. , Nickel powder, nickel powder, and the like. Further, the electrolyte system 1 is prepared by adding lithium perchlorate, lithium hexafluorophosphate, boron tetrafluoride to a non-aqueous solvent such as ethylene carbonate, propylene carbonate, butylene carbonate, dimethyl carbonate, diethyl carbonate and methyl ethyl carbonate. Examples thereof include those in which lithium fluoride, lithium arsenide hexafluoride, lithium trifluoromethanesulfonate, and the like are dissolved at about 0.2 to 2 mol / l. And in producing this kind of lightweight, flexible lithium polymer battery,
The positive electrode 2, the separator (polymer-electrolyte system) 1, and the negative electrode 3, which are electrode elements, are combined in a layered manner. afterwards,
The outer resin films 4, 5 are laminated and arranged on both sides of the battery element, and the outer peripheral portions of the outer resin films 4, 5 are welded while the respective electrode terminals 2a, 3a connected to the current collector are led out. Alternatively, a sheet-shaped lithium polymer battery is manufactured by airtightly joining, integrating and sealing through an adhesive layer. [0009] However, the lithium polymer battery having the above configuration has the following disadvantages. That is, in the sheet-shaped lithium polymer battery, the electrode terminals 2a and 3a, each having one end connected to each current collector of the electrode element, are sealed and led out in the same plane to the outside in the form of being directly extended. ing. In other words, at least on the sides where the electrode terminals 2a and 3a are sealed and led out, a relatively large area is required for welding and bonding and sealing the exterior resin films 4 and 5, and accordingly, the lithium polymer battery can be made more compact. Or the capacity of the lithium polymer battery is reduced. The present invention has been made in view of such circumstances, and an object of the present invention is to provide a lithium polymer battery having a more compact or higher capacity. According to a first aspect of the present invention, there is provided a sheet-like positive electrode having a lithium-containing metal oxide as an active material and having a positive electrode current collector, and a sheet-like positive electrode laminated on the main surface of the sheet-like positive electrode. A sheet-like separator arranged and carrying an electrolytic solution, and a lithium metal or a carbonaceous material absorbing and releasing lithium as an active material laminated and arranged on the main surface of the sheet-like separator, and having a negative electrode current collector A sheet-shaped negative electrode, an exterior resin film for sealing an electrode element composed of a laminate of the sheet-shaped electrode and the sheet-shaped separator in a liquid-tight manner, one end of each of which is connected to a current collector of the sheet-shaped electrode, and the other end is A lithium polymer battery having positive and negative electrode terminals sealed and led out of the exterior resin film on one side edge of the exterior resin film, wherein the positive and negative electrodes are The electrode terminals are oriented in the thickness direction along the end faces of the electrode elements.
Bent substantially at a right angle on the side close to each other in, and the thickness from the sheet separator on the end face of the electrode elements
It is derived outside the exterior resin film flush with and parallel to the lithium-polymer battery main surface at a position away in the direction
At the same time, the exterior resin film is also an end face of the electrode element.
Bent along the positive and negative electrode terminals
It is a lithium polymer battery, characterized in that it is sealed. According to the first aspect of the present invention, the constituent materials of the lithium polymer battery, such as the positive and negative sheet electrodes, the sheet separator, and the exterior resin film, and the structure and shape of the lithium polymer battery are basically the same as those of the prior art. It is not different from the case. An embodiment will be described below with reference to FIGS. 1 and 2. FIG. 1 is a plan view showing a main part of a lithium polymer battery according to an embodiment, and FIG.
FIG. 3 is a cross-sectional view taken along line AA of FIG. 1 and 2, reference numeral 1 denotes a sheet-like separator for supporting an electrolytic solution; 2, a lithium-containing metal oxide laminated and arranged on one main surface of the sheet-like separator 1 as an active material; The sheet-like negative electrode 3 has a lithium metal or a carbonaceous material that occludes / releases lithium as an active material, and has a negative electrode current collector. It is. Here, the sheet-like separator 1 is made of an electrolyte-retaining polymer, for example, hexafluoropropylene-
It is a polymer-electrolyte system such as a vinylidene fluoride copolymer. The sheet-shaped positive electrode 2 is composed of an active material such as a metal oxide containing lithium, an electrolyte-retaining polymer, and a positive electrode current collector. The sheet-shaped negative electrode is, for example, an active material that stores and releases lithium ions. It is composed of a substance, an electrolyte-retaining polymer, and a negative electrode current collector. The positive electrode 2 is formed by welding one end of an aluminum foil piece to the positive electrode current collector.
The positive electrode terminal 2a is connected to the negative electrode 3 and the negative electrode terminal 3a is connected to the negative electrode current collector by welding and connecting one end of a copper foil piece. These sheet electrodes 2 and 3 and sheet separator 1 are laminated to form an electrode element. Further, reference numerals 4 and 5 denote the sheet electrodes 2 and 3 respectively.
And an exterior resin film for liquid-tightly or air-tightly sealing an electrode element formed of a laminate of the sheet-like separator 1, and sealing the positive and negative electrode terminals 2a, 3a in a liquid-tight or air-tight manner. It is led out of the enclosure formed by 4 and 5. However, the two electrode terminals 2
The a and 3a are led out of the sealing body along the end face of the electrode element, and are bent substantially at right angles to sides approaching each other , and 2a ',
3a 'and sheet separator on the end face of the electrode element
At the position distant from the main body and sealed and led out of the exterior resin films 4 and 5 on the same plane parallel to the main surface of the lithium polymer battery. As described above, the electrode terminals 2a, 3a are bent substantially at right angles along the end faces of the battery element and are bent at 2a ', 3a'.
The electrode terminals 2a,
Since the extension of 3a is avoided, the length of the electrode terminals 2a and 3a in the lead-out direction is reduced. That is, the shortened portion is made compact, and the battery capacity can be increased by using the shortened space as the electrode element region. For example, in the case of a lithium polymer battery having a battery exterior of 36 × 67 × 3.1 mm and an electrode element of 32 × 54 × 2.4 mm, in the conventional configuration, the distance between the end faces of the battery element and the inner wall surfaces of the electrode terminals 2a and 3a is reduced. At 10 mm, the battery capacity was 280 mAh. On the other hand, in the configuration of the present invention, the distance between the end faces of the battery elements and the inner wall surfaces of the electrode terminals 2a and 3a is reduced by 3 mm and 7 mm, and the reduced space is enlarged to the electrode element area, and The capacity could be 316 mAh. It should be noted that the present invention is not limited to the above example, and various modifications can be made without departing from the spirit of the invention. For example, the constituent material of the electrode element, the material of the exterior resin film, the shape of the lithium polymer battery, and the like are not particularly limited, and any conventionally known materials can be used. According to the first aspect of the present invention, since the plane area of the region for sealing and leading the electrode terminal of the lithium polymer battery is reduced, the reduced portion can be reduced in size. Can be. Alternatively, since the electrode element can be set large corresponding to the reduced region, the capacity of the lithium polymer battery can be increased accordingly. Moreover, since the electrode terminals derived from the exterior resin film are less likely to be disconnected due to vibration or the like, a highly reliable lithium polymer battery is provided.
【図面の簡単な説明】
【図１】実施例のリチウムポリマー電池の要部構成を一
部切り欠いて示す平面図。
【図２】図１の A-A線に沿って切断したた断面構造を示
す断面図。
【図３】従来のリチウムポリマー電池の要部構成を示す
断面図。
【符号の説明】
１……セパレーター
２……シート状の正極
2a……正極電極端子
2a′，3a′……折り曲げ
３……シート状の負極
3a……負極電極端子
４，５……外装樹脂フィルムBRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view showing a main part of a lithium polymer battery of an embodiment with a part thereof cut away. FIG. 2 is a sectional view showing a sectional structure taken along line AA in FIG. 1; FIG. 3 is a cross-sectional view showing a configuration of a main part of a conventional lithium polymer battery. [Explanation of Signs] 1. Separator 2 Sheet-shaped positive electrode 2a Positive electrode terminal 2a ', 3a' Bend 3 Sheet negative electrode 3a Negative electrode terminal 4, 5 Exterior resin the film
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) H01M 10/40 H01M 2/02 H01M 2/26 H01M 6/18 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 7 , DB name) H01M 10/40 H01M 2/02 H01M 2/26 H01M 6/18
Claims (1)
かつ正極集電体を有するシート状正極と、前記シート状
正極主面に積層・配置され、かつ電解液を担持するシー
ト状セパレーターと、前記シート状セパレーター主面に
積層・配置されたリチウム金属もしくはリチウムを吸蔵
・放出する炭素質材を活物質とし、かつ負極集電体を有
するシート状負極と、前記シート状電極およびシート状
セパレーターの積層体から成る電極要素を液密に封装す
る外装樹脂フィルムと、前記シート状電極の集電体に一
端がそれぞれ接続し、他端が前記外装樹脂フィルムの一
側縁側において前記外装樹脂フィルム外に封止・導出さ
れた正・負両電極端子とを有するリチウムポリマー電池
であって、前記正・負両電極端子は、電極要素の端面に
沿わせて厚さ方向に互いに近付く側にほぼ直角に折り曲
げられ、かつ前記電極要素の端面上の前記シート状セパ
レーターから厚さ方向に離れた位置で前記リチウムポリ
マー電池主面に平行して同一面をなして外装樹脂フィル
ム外に導出されるとともに、前記外装樹脂フィルムも前
記電極要素の端面において前記正・負両電極端子に沿っ
て折り曲げられて封止されていることを特徴とするリチ
ウムポリマー電池。(57) [Claims 1] A lithium-containing metal oxide as an active material,
And a sheet-shaped positive electrode having a positive electrode current collector, stacked and arranged on the main surface of the sheet-shaped positive electrode, and a sheet-shaped separator carrying an electrolyte, and lithium metal stacked and arranged on the main surface of the sheet-shaped separator or An exterior resin film that liquid-tightly seals an electrode element comprising a sheet-shaped negative electrode having a carbonaceous material that occludes and releases lithium as an active material and having a negative electrode current collector, and a laminate of the sheet-shaped electrode and the sheet-shaped separator. And positive and negative electrode terminals each having one end connected to the current collector of the sheet-like electrode and the other end sealed and led out of the exterior resin film on one side of the exterior resin film. a lithium polymer battery, the positive and negative two electrode terminals, songs folded substantially perpendicular to the side closer to each other and along the end face of the electrode elements in the thickness direction <br/> Gerare and While being led to the outside of the exterior resin film forms the same plane in parallel at a position away in the thickness direction from the sheet-like separator on the end face of the serial electrode elements to the lithium polymer battery main surface, also the outer resin film Previous
Along the positive and negative electrode terminals at the end face of the electrode element
Bent Te and lithium polymer batteries, characterized by being sealed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25526297A JP3378178B2 (en) | 1997-09-19 | 1997-09-19 | Lithium polymer battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25526297A JP3378178B2 (en) | 1997-09-19 | 1997-09-19 | Lithium polymer battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1197063A JPH1197063A (en) | 1999-04-09 |
| JP3378178B2 true JP3378178B2 (en) | 2003-02-17 |
Family
ID=17276313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25526297A Expired - Fee Related JP3378178B2 (en) | 1997-09-19 | 1997-09-19 | Lithium polymer battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3378178B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100615153B1 (en) * | 1999-08-09 | 2006-08-25 | 삼성에스디아이 주식회사 | Lithium secondary battery |
| KR100346378B1 (en) * | 1999-11-16 | 2002-08-01 | 삼성에스디아이 주식회사 | Lithium polymer battery pack |
| JP4496575B2 (en) * | 1999-11-17 | 2010-07-07 | ソニー株式会社 | Battery manufacturing method and battery manufacturing apparatus |
| JP2001266842A (en) * | 2000-03-24 | 2001-09-28 | At Battery:Kk | Non-aqueous electrolyte secondary battery |
| KR100542198B1 (en) | 2003-10-23 | 2006-01-11 | 삼성에스디아이 주식회사 | Lithium polymer secondary battery |
-
1997
- 1997-09-19 JP JP25526297A patent/JP3378178B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH1197063A (en) | 1999-04-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3964521B2 (en) | Assembled battery | |
| JP4293501B2 (en) | Electrochemical devices | |
| JP6859059B2 (en) | Lithium-ion secondary battery and its manufacturing method | |
| US11205815B2 (en) | Secondary battery | |
| JP2006054119A (en) | Bipolar battery and battery pack | |
| JP6881108B2 (en) | Rechargeable battery manufacturing method and rechargeable battery | |
| JP3378178B2 (en) | Lithium polymer battery | |
| JP4377475B2 (en) | Thin battery | |
| JP2000306556A (en) | Framed battery | |
| JP2000090897A (en) | Battery and battery pack | |
| JP2020092038A (en) | Secondary battery and manufacturing method thereof | |
| JP2016029617A (en) | Nonaqueous electrolyte secondary battery | |
| JP3980757B2 (en) | Thin battery | |
| JP3576358B2 (en) | Polymer electrolyte battery | |
| JP2000357493A (en) | Frame-furnished battery | |
| WO2021149644A1 (en) | Secondary battery and manufacturing method for same | |
| WO2021140838A1 (en) | Secondary battery | |
| JP2004164905A (en) | Film-armored battery and battery pack | |
| JP2000156211A (en) | Battery and battery pack | |
| JP2000277159A (en) | Nonaqueous electrolyte secondary battery | |
| JPH11162421A (en) | Sheet type battery | |
| JP2003346768A (en) | Non-aqueous electrolyte secondary battery | |
| JP2000100404A (en) | Nonaqueous electrolyte battery and battery pack | |
| WO2018131398A1 (en) | Secondary cell | |
| WO2022044672A1 (en) | Secondary battery and method for manufacturing same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20021126 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313113 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20071206 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081206 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091206 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091206 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101206 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111206 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121206 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121206 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20131206 Year of fee payment: 11 |
|
| LAPS | Cancellation because of no payment of annual fees |