JPH07220754A - Layer built lithium secondary battery - Google Patents
Layer built lithium secondary batteryInfo
- Publication number
- JPH07220754A JPH07220754A JP6034117A JP3411794A JPH07220754A JP H07220754 A JPH07220754 A JP H07220754A JP 6034117 A JP6034117 A JP 6034117A JP 3411794 A JP3411794 A JP 3411794A JP H07220754 A JPH07220754 A JP H07220754A
- Authority
- JP
- Japan
- Prior art keywords
- container
- secondary battery
- lithium secondary
- electrode material
- laminated
- 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.)
- Withdrawn
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
Landscapes
- Secondary Cells (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、厚膜形成方法を用いて
作製される積層型リチウム二次電池に係り、特に充放電
に伴う膨張収縮を吸収する構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated lithium secondary battery manufactured by a thick film forming method, and more particularly to a structure for absorbing expansion and contraction due to charge and discharge.
【０００２】[0002]
【従来の技術】従来の電池は一般に正極、負極が別々の
ブロックを構成して電解質を含むセパレータを介して対
峙する構造を有していたが、軽量、高エネルギー密度化
等を図るため、特開平２−２９７８６０号公報において
開示されたリチウム電池のように、正極材、正極集電
体、正極材、電解質を含むセパレータ、負極材、負極集
電体、負極材の各シートを重ねて渦巻き状に巻き、この
渦巻き状に巻いた電池素体を円筒形のケースに収容し、
ケース上面を正極端子、ケース下面を負極端子として構
成し、ケースの開口面に樹脂等でなるガスケットを介し
て嵌着したキャップで封止したものがある。2. Description of the Related Art Conventional batteries generally have a structure in which a positive electrode and a negative electrode form separate blocks and face each other via a separator containing an electrolyte, but in order to achieve light weight and high energy density, a special battery is required. As in the lithium battery disclosed in Kaihei 2-297860, each sheet of a positive electrode material, a positive electrode current collector, a positive electrode material, a separator containing an electrolyte, a negative electrode material, a negative electrode current collector, and a negative electrode material is stacked to form a spiral shape. And the spirally wound battery body is housed in a cylindrical case,
In some cases, the upper surface of the case is configured as a positive electrode terminal and the lower surface of the case is configured as a negative electrode terminal, and the opening surface of the case is sealed with a cap fitted through a gasket made of resin or the like.
【０００３】[0003]
【発明が解決しようとする課題】しかしこのように、金
属円筒ケースに巻シート状の電池素体を押し込んだ構造
においては、第１に、電池素体を弾性的に束ねてケース
に効率良く収容することが困難であり、第２に、積層体
をケース内に弾性的に収容できないから、充放電に伴う
積層体の膨張、収縮を吸収することが困難であり、積層
体の形くずれが起きやすく、第３に、湿気等の侵入を防
ぐ気密封止を量産性良く行うことが困難であるという問
題点があった。However, in the structure in which the wound sheet-shaped battery element body is pushed into the metal cylindrical case as described above, firstly, the battery element bodies are elastically bundled and efficiently housed in the case. Secondly, since it is difficult to elastically accommodate the laminated body in the case, it is difficult to absorb the expansion and contraction of the laminated body due to charge and discharge, and the laminated body loses its shape. Thirdly, there is a problem that it is difficult to perform airtight sealing that prevents intrusion of moisture and the like with good mass productivity.
【０００４】本発明は、上記従来技術の問題点に鑑み、
電池素体を構成する素材を容易に束ねることができ、か
つ充放電時の膨張、収縮を吸収すると共に、良好な気密
封止が容易に行え、量産性を高めた積層型リチウム二次
電池を提供することを目的とする。The present invention has been made in view of the above problems of the prior art.
A laminated lithium secondary battery that can easily bundle the materials that form the battery body, absorb expansion and contraction during charging and discharging, and easily perform good airtight sealing, and improve mass productivity. The purpose is to provide.
【０００５】[0005]
【課題を解決するための手段】本発明は、上記目的を達
成するため、集電体と、正極材と、電極質を含んだセパ
レータもしくは固体電解質と、負極材とを交互に１組以
上積層してなる積層型リチウムニ次電池において、前記
各素材の積層体を弾性を有する熱収縮チューブによって
一体的に束ね、該束ねた積層体を開口面に蓋を設けた容
器内に収容し、該積層体に設けた集電体を容器に一体に
設けた端子に接続し、該容器と蓋との間を弾性リングで
密封すると共に、該弾性リングを設けた部分に可撓性樹
脂を施して二重密封したことを特徴とする。本発明にお
いて、前記容器を金属製とし、前記端子の少なくとも一
方は、ガラスハーメリード端子とすることが好ましく、
また、容器が積層体の積層方向に伸縮性を持たせること
がさらに好ましい。In order to achieve the above object, the present invention alternately stacks one or more sets of a current collector, a positive electrode material, a separator or solid electrolyte containing electrode material, and a negative electrode material. In the laminated lithium secondary battery, the laminated body of each material is integrally bundled by a heat-shrinkable tube having elasticity, and the bundled laminated body is housed in a container provided with a lid on the opening surface, and the laminated body The current collector provided on the body is connected to a terminal integrally provided on the container, and an elastic ring is used to seal between the container and the lid, and a flexible resin is applied to the portion provided with the elastic ring. It is characterized by being heavily sealed. In the present invention, the container is made of metal, and at least one of the terminals is preferably a glass herme lead terminal,
It is further preferable that the container has elasticity in the stacking direction of the stack.
【０００６】本発明において、前記容器としては、合成
樹脂成形体の他、ニッケル、アルミニウム、真偸等の金
属が用いられる。また、正極集電体としてはNiやAlが用
いられ、負極集電体としてCuが用いられる。また、正極
材に用いる活物質として、LiCoO2等のアルカリ金属酸化
物、MnO2の他の金属または他の金属の酸化物や水酸化物
との複合酸化物、V2O5等のバナジウム酸化物、Cr2O5等
のクロム酸化物、TiS2、MoS2、FeS2等の遷移金属ジカル
コゲナイト、NbSe3等の遷移金属トリカルコゲナイト、
シュブレル相（AxMo6Ch8、A=Li、Cu、Ch＝S、Se、ｘ＝
０〜４）等が用いられる。負極材に用いる活物質として
は、金属Li、Li合金、またはLiをドープし、かつ脱ドー
プしうる導電性ポリマー等が用いられる。また、セパレ
ータに含浸させる電解液は、非水溶媒に溶質を溶解させ
たものが用いられ、溶媒としては、エチレンカーボネー
ト、プロピレンカーボネート、ジメチルスルホキシド、
γ−ブチロラクトン、スルホラン、メチルスルホラン、
γ−バレロラクトン、γ−オクタノイックラクトン、
１．２−ジエトキシエタン、１．２−ジメトキシエタ
ン、２−メチルテトラヒドロフラン、１．３−ジオキソ
ラン、アセトニトリル、プロピオニトリル、ジエチルエ
ーテル、テロラヒドロフラン、１．２−ジブトキシエタ
ン等が用いられ、また溶質として、LiClO4、LiAsF6、Li
PF6、LiBF4、LiB(C6H5)4、LiCl、LiBr、CH3SO2Li、CF2S
O2Li、LiCF3SO3等が用いられる。また、固体電解質を用
いることもできる。また、固体電解質を用いることもで
きる。前記弾性熱収縮チューブとしては熱収縮性を持た
せたポリエチレンフィルムやポリ塩化ビニリデンフィル
ム等が用いられる。また、弾性リングとしては、ゴムま
たはポリエチレン、ポリプロピレン、軟質ポリ塩化ビニ
ル、ナイロン６６、ポリテトラフルオロエチレン等の合
成樹脂が用いられる。また、可撓性を有する封止樹脂と
しては、シリコーン系樹脂やエポキシ樹脂等が用いられ
る。In the present invention, as the container, in addition to a synthetic resin molded body, a metal such as nickel, aluminum, or moxibustion is used. Further, Ni or Al is used as the positive electrode current collector, and Cu is used as the negative electrode current collector. In addition, as an active material used for the positive electrode material, an alkali metal oxide such as LiCoO 2 or another metal such as MnO 2 or a complex oxide with an oxide or hydroxide of another metal, or vanadium oxide such as V 2 O 5 is used. Thing, chromium oxides such as Cr 2 O 5 , TiS 2 , MoS 2 , transition metal dichalcogenites such as FeS 2 , transition metal trichalcogenites such as NbSe 3 ,
Svrel phase (A x Mo 6 Ch 8 , A = Li, Cu, Ch = S, Se, x =
0-4) and the like are used. As the active material used for the negative electrode material, metallic Li, a Li alloy, or a conductive polymer capable of doping and dedoping with Li is used. Further, as the electrolytic solution with which the separator is impregnated, a solution in which a solute is dissolved in a non-aqueous solvent is used, and as the solvent, ethylene carbonate, propylene carbonate, dimethyl sulfoxide,
γ-butyrolactone, sulfolane, methylsulfolane,
γ-valerolactone, γ-octanoic lactone,
1.2-diethoxyethane, 1.2-dimethoxyethane, 2-methyltetrahydrofuran, 1.3-dioxolane, acetonitrile, propionitrile, diethyl ether, terrahydrofuran, 1.2-dibutoxyethane and the like are used. , As a solute, LiClO 4 , LiAsF 6 , Li
PF 6 , LiBF 4 , LiB (C 6 H 5 ) 4 , LiCl, LiBr, CH 3 SO 2 Li, CF 2 S
O 2 Li, LiCF 3 SO 3 or the like is used. Also, a solid electrolyte can be used. Also, a solid electrolyte can be used. As the elastic heat-shrinkable tube, a polyethylene film or polyvinylidene chloride film having heat-shrinkability is used. As the elastic ring, rubber or synthetic resin such as polyethylene, polypropylene, soft polyvinyl chloride, nylon 66, polytetrafluoroethylene, etc. is used. Further, as the flexible sealing resin, a silicone resin, an epoxy resin, or the like is used.
【０００７】[0007]
【作用】本発明の積層型リチウム二次電池は、上述のよ
うに、積層体を弾性を有する熱収縮チューブによって一
体的に束ねたので、充放電に伴う膨張収縮が該チューブ
によって吸収される。また、容器に端子を一体に設ける
と共に、容器と蓋との間を弾性リングで密封し、かつ、
該弾性リングを設けた部分に可撓性樹脂を施して二重密
封した構造により、気密性が向上すると共に、密封容器
と蓋との間も膨張収縮可能である。容器に金属を用いた
場合、端子部分にガラスハーメリード端子を設けること
により、気密性が確保される。In the laminated lithium secondary battery of the present invention, as described above, the laminated body is integrally bundled by the heat-shrinkable tube having elasticity, so that the expansion / shrinkage due to charge / discharge is absorbed by the tube. In addition, the container is integrally provided with a terminal, and a space between the container and the lid is sealed with an elastic ring, and
Due to the structure in which the portion provided with the elastic ring is made of a flexible resin and is hermetically sealed, the airtightness is improved and the space between the hermetic container and the lid can be expanded and contracted. When a metal is used for the container, airtightness is ensured by providing a glass herme lead terminal in the terminal portion.
【０００８】[0008]
【実施例】図１（Ａ）は本発明による電池の一実施例を
示す縦断面図、同（Ｂ）はその部分拡大図、同（Ｃ）は
平面図、同（Ｄ）は（Ａ）の左側面図である。１は積層
構造でなる電池素体、２は一面が開口された直方体状の
合成樹脂製の容器、３はその開口部を閉塞する合成樹脂
製の蓋、５、６はそれぞれ容器２にモールドにより一体
に設けられた正極、負極端子である。７は蓋３の周囲に
形成したＬ字形のリング収容部３ａと容器４の内壁との
間に圧入したゴムあるいは弾性を有する合成樹脂からな
る弾性リング、８は蓋３と容器２との間を密閉するよう
に、弾性リング７上に充填した封止樹脂であり、該封止
樹脂８は弾性リング７上に溶融状態で添加して硬化させ
るものである。1 (A) is a longitudinal sectional view showing an embodiment of a battery according to the present invention, FIG. 1 (B) is a partially enlarged view thereof, FIG. 1 (C) is a plan view, and FIG. 1 (D) is (A). FIG. 1 is a battery body having a laminated structure, 2 is a rectangular parallelepiped synthetic resin container having an opening on one side, 3 is a synthetic resin lid for closing the opening, and 5 and 6 are molded on the container 2 respectively. The positive electrode and the negative electrode terminal are integrally provided. Reference numeral 7 denotes an elastic ring made of rubber or synthetic resin having elasticity which is press-fitted between the L-shaped ring accommodating portion 3a formed around the lid 3 and the inner wall of the container 4, and 8 denotes a space between the lid 3 and the container 2. A sealing resin is filled on the elastic ring 7 so as to be hermetically sealed, and the sealing resin 8 is added to the elastic ring 7 in a molten state and cured.
【０００９】図２（Ａ）は積層体でなる電池素体１の構
造の一例を示す斜視図、同（Ｂ）はその分解斜視図であ
り、１０、１２はそれぞれ正極集電体および負極集電
体、１１、１３はそれぞれこれらの正極、負極集電体１
０、１２上に重畳した正極材、負極材、１４は正極材１
１と負極材１３との間に介在させた電極質を含んだセパ
レータ１４（もしくは固体電解質）である。FIG. 2 (A) is a perspective view showing an example of the structure of the battery body 1 made of a laminated body, and FIG. 2 (B) is an exploded perspective view thereof, in which 10 and 12 are a positive electrode current collector and a negative electrode current collector, respectively. Current collectors 11 and 13 are the positive electrode and negative electrode current collectors 1 thereof, respectively.
Positive electrode material and negative electrode material, which are superposed on 0 and 12, 14 is a positive electrode material 1
1 is a separator 14 (or a solid electrolyte) including an electrode material interposed between the negative electrode material 13 and the negative electrode material 13.
【００１０】この電池素体１は、図２（Ｂ）に示すよう
に、シート法または印刷法により正極集電体１０の片面
あるいは両面に正極材１１を一体に重畳しておき、一
方、負極集電体１２の片面または両面にも負極材１３を
一体に重畳しておき、これらの正極材１１、負極材１３
の間に電極質を含んだセパレータ１４（もしくは固体電
解質）を介在させて図２（Ａ）に示すように１組以上積
層してなるものであり、集電体１０、１２は図１に示す
端子５、６に接続するために延出している。これらの材
料１０〜１４はそれぞれ矩形板状をなす。As shown in FIG. 2 (B), the battery body 1 has a positive electrode material 11 integrally laminated on one side or both sides of a positive electrode current collector 10 by a sheet method or a printing method, while a negative electrode The negative electrode material 13 is integrally superimposed on one or both surfaces of the current collector 12, and these positive electrode material 11 and negative electrode material 13 are formed.
The separator 14 (or the solid electrolyte) containing the electrode material is interposed between them, and one or more sets are laminated as shown in FIG. 2A. The current collectors 10 and 12 are shown in FIG. It is extended to connect to the terminals 5 and 6. Each of these materials 10 to 14 has a rectangular plate shape.
【００１１】具体的には、正極集電体１０としてAlを用
い、そのシートの両側または片側に、その上にLiCoO2の
ような正極活物質等をグラファイトでなる導電粉ととも
に樹脂等でなるバインダにより結合して形成したシート
状の正極材１１を重畳した。また、負極集電体１２とし
てCuシートを用い、そのシートの両側または片側に負極
活物質としてのグラファイトをバインダで結合してなる
シート状の負極材１３を重畳した。電解質としては、エ
チレンカーボネート（ＥＣ）とジエチレンカーボネート
（ＤＥＣ）とを１対１の重量比で混ぜた溶媒中にLiClO4
を溶解させた液体電解質を用い、これをポリプロピレン
の樹脂製セパレータ１４の微細孔に含浸させたものを用
いた。Specifically, Al is used as the positive electrode current collector 10, and a positive electrode active material such as LiCoO 2 is provided on both sides or one side of the sheet and a binder made of resin or the like together with conductive powder made of graphite. The sheet-shaped positive electrode materials 11 formed by being bonded together were superposed. Further, a Cu sheet was used as the negative electrode current collector 12, and a sheet-shaped negative electrode material 13 in which graphite as a negative electrode active material was bound with a binder was superposed on both sides or one side of the sheet. As the electrolyte, LiClO 4 was added to a solvent prepared by mixing ethylene carbonate (EC) and diethylene carbonate (DEC) in a weight ratio of 1: 1.
A liquid electrolyte in which the above was dissolved was used, and this was impregnated into the fine holes of the polypropylene resin separator 14.
【００１２】図２（ａ）に示すように、前記素材１０〜
１４を重ねたものに、図３（ａ）、（ｂ）に示すよう
に、ポリ塩化ビニリデンからなる弾性を有する熱収縮シ
ート１５を被せて集電体１０、１２の延出部を除いて包
み（この場合、積層体が撓まないように矩形板で積層体
を挟んでおいてもよい）、図４（ａ）に示すように、シ
ート１５の端部の重ねた部分１５ａを接着あるいは熱溶
着し、図４（ｂ）に示すように、シート１５を周囲から
ヒータ１８により加熱し収縮させて前記素材１０〜１４
を一体に重ねた。そして図４（ｃ）に示すように複数枚
の正極集電体１０の端部どうし、負極集電体１２の端部
どうしを導電性接着剤により接着するかまたは溶接（１
６）し、集電体１０、１２の端部を必要に応じて切断し
た。As shown in FIG. 2A, the material 10 is
As shown in FIGS. 3 (a) and 3 (b), the heat-shrinkable sheet 15 made of polyvinylidene chloride having elasticity is put on the stack of 14 to cover the current collectors 10 and 12 excluding the extending portions. (In this case, the laminated body may be sandwiched between rectangular plates so that the laminated body does not bend.) As shown in FIG. 4A, the overlapped portion 15a of the end portion of the sheet 15 is bonded or heated. After welding, as shown in FIG. 4 (b), the sheet 15 is heated from the surroundings by the heater 18 to be contracted, and the materials 10 to 14 are
Were stacked together. Then, as shown in FIG. 4C, the end portions of the plurality of positive electrode current collectors 10 and the end portions of the negative electrode current collector 12 are adhered by a conductive adhesive or by welding (1
6) Then, the ends of the current collectors 10 and 12 were cut as necessary.
【００１３】このようにして構成した電池素体１を、図
１に示すように容器２内に入れ、集電体１０、１２の端
部を端子５、６にそれぞれ導電性接着剤により接着また
は超音波溶接等により固着（１７）した。その後、前述
のように蓋３の装着、ゴム製弾性リング７の押し嵌め、
シリコン系可撓性樹脂８の塗布を行い硬化させることに
より密封した。The battery body 1 thus constructed is placed in a container 2 as shown in FIG. 1, and the ends of the current collectors 10 and 12 are bonded to the terminals 5 and 6 by a conductive adhesive, respectively. It was fixed (17) by ultrasonic welding or the like. Then, as described above, the lid 3 is attached, the rubber elastic ring 7 is press-fitted,
The silicone-based flexible resin 8 was applied and cured to seal it.
【００１４】このように、容器２に端子５、６を一体に
設けるとともに、矩形をなす素材からなる積層体を弾性
を有する熱収縮チューブ１５によって一体的に束ねたの
で、渦巻き状に巻く場合のように特殊な装置を要するこ
となく、効率良く積層体を束ねることができる。また、
充放電に伴う膨張収縮が該チューブ１５によって吸収さ
れ、形くずれが防止され、長期にわたり電極間が近接し
た構造を保持し、性能劣化が防止される。また、容器２
と蓋３との間を弾性リング７で密封し、かつ、該弾性リ
ング７を設けた部分に可撓性樹脂８を施して二重密封し
た構造により、容器２と蓋３との間も膨張収縮可能であ
るから、容器２、蓋３による積層体の保形作用が得られ
る。またこれらの構造により気密性が向上する。また、
組み立て工程上、まず容器２に蓋３を被せ、その後、弾
性リング７で仮止めする工程が採用されるため、最終的
に封止するための樹脂封止工程が容易に実施できる。As described above, since the terminals 5 and 6 are integrally provided in the container 2 and the laminated body made of the rectangular material is integrally bundled by the elastic heat-shrinkable tube 15, it is possible to wind it in a spiral shape. As described above, it is possible to efficiently bundle the stacked bodies without requiring a special device. Also,
The expansion and contraction due to charge and discharge are absorbed by the tube 15, the shape is prevented, the structure in which the electrodes are close to each other is maintained for a long period of time, and the performance deterioration is prevented. Also, container 2
The structure in which the elastic ring 7 is sealed between the lid 3 and the lid 3, and the flexible resin 8 is applied to the portion where the elastic ring 7 is provided so as to be double-sealed, so that the space between the container 2 and the lid 3 is also expanded. Since it can be contracted, the shape retaining effect of the laminated body by the container 2 and the lid 3 can be obtained. Further, the airtightness is improved by these structures. Also,
In the assembling process, a process of first covering the container 2 with the lid 3 and then temporarily fixing with the elastic ring 7 is adopted, so that the resin sealing process for final sealing can be easily performed.
【００１５】図５（Ａ）は本発明の他の実施例を示す縦
断面図、同（Ｂ）はその要部拡大図であり、本実施例に
おいては、容器２Ａをニッケル製とし、その側面部に全
周にわたって波状曲成部２ｂを形成することにより、上
下方向の伸縮性を持たせると共に、両端側面部には開口
部２ｃにガラス１８により端子５Ａ、６Ａが固定された
ガラスハーメリード端子を設けることにより、気密性を
持たせたものである。該ガラスハーメリード端子５Ａ、
６Ａは、端子５Ａ、６Ａを嵌めてバインダで板状に成形
したガラス素材を開口部２ｃに嵌めて焼成することによ
り、容器２に一体にかつガラス１８により電気的に絶縁
して固定される。本実施例によっても前記実施例と同様
の作用効果を奏することができる上、容器２Ａの伸縮性
をさらに高めることができる。FIG. 5 (A) is a longitudinal sectional view showing another embodiment of the present invention, and FIG. 5 (B) is an enlarged view of the main part thereof. In this embodiment, the container 2A is made of nickel and its side surface is shown. By forming a wavy curved portion 2b over the entire circumference, the glass has a stretchability in the vertical direction, and the glass herme leads in which the terminals 5A and 6A are fixed to the openings 2c at both end side surfaces by the glass 18 are provided. The terminal is provided to provide airtightness. The glass herme lead terminal 5A,
6A is fixed integrally to the container 2 and electrically insulated by the glass 18 by fitting the terminals 5A and 6A and molding a glass material formed into a plate shape with a binder into the opening 2c and firing. According to the present embodiment as well, it is possible to obtain the same effects as the above-mentioned embodiments, and it is possible to further enhance the elasticity of the container 2A.
【００１６】なお、本実施例のように、電池素体１およ
び容器２を直方体形状に形成した場合には、容器２の内
面と電池素体１との隙間を小さくでき、従来の円筒形電
池に比較して無駄なスペースを少なくできる。When the battery element body 1 and the container 2 are formed in a rectangular parallelepiped shape as in this embodiment, the gap between the inner surface of the container 2 and the battery element body 1 can be reduced, and the conventional cylindrical battery can be used. You can reduce the wasted space compared to.
【００１７】[0017]
【発明の効果】請求項１によれば、素材を積層して熱収
縮チューブで束ねる構造としたので、効率良く束ねるこ
とができる。また、熱収縮チューブが弾性を有するた
め、充放電に伴う膨張を該チューブにより吸収し、積層
体が長期にわたり形くずれせず、性能の劣化が防止され
る。また、容器も伸縮性を持たせた構造であるために、
積層体の膨張収縮を容器側で吸収できる。また、容器と
蓋との間を弾性リングと樹脂により二重密封したので、
気密性が向上する。また、容器と蓋との間が弾性リング
で仮止めされた状態で封止樹脂を施す工程が採用される
ために、最終封止工程が容易となり、量産性が向上す
る。According to the first aspect of the present invention, since the materials are laminated and bundled by the heat shrinkable tube, the bundles can be efficiently bundled. Further, since the heat-shrinkable tube has elasticity, expansion caused by charge and discharge is absorbed by the tube, the laminated body does not lose its shape for a long period of time, and deterioration of performance is prevented. In addition, since the container also has a stretchable structure,
Expansion and contraction of the laminate can be absorbed on the container side. Also, since the elastic ring and resin are double sealed between the container and the lid,
Airtightness is improved. Further, since the step of applying the sealing resin in the state where the container and the lid are temporarily fixed by the elastic ring is adopted, the final sealing step is facilitated and the mass productivity is improved.
【００１８】請求項２によれば、容器を金属製とし、端
子をガラスハーメリード端子としたので、請求１と同様
の効果があげられる。According to the second aspect, since the container is made of metal and the terminals are glass herme lead terminals, the same effect as that of the first aspect can be obtained.
【００１９】請求項３によれば、容器を伸縮性にしたの
で、容器と蓋とを含めた全体の伸縮性がさらに高められ
る。According to the third aspect, since the container is made elastic, the overall elasticity including the container and the lid can be further enhanced.
【図１】（Ａ）は本発明による電池の一実施例を示す縦
断面図、（Ｂ）はその部分拡大図、（Ｃ）はその平面
図、（Ｄ）は（Ａ）の左側面図である。1A is a longitudinal sectional view showing an embodiment of a battery according to the present invention, FIG. 1B is a partially enlarged view thereof, FIG. 1C is a plan view thereof, and FIG. 1D is a left side view of FIG. Is.
【図２】（Ａ）は図１の電池素体の積層構造を示す側面
図、（Ｂ）はその分解斜視図である。2A is a side view showing a laminated structure of the battery body of FIG. 1, and FIG. 2B is an exploded perspective view thereof.
【図３】本実施例の電池素体の積層後の組立工程の一部
を示す工程図である。FIG. 3 is a process diagram showing a part of an assembling process after stacking the battery bodies of the present embodiment.
【図４】本実施例の電池素体の積層後の組立工程の残部
を示す工程図である。FIG. 4 is a process diagram showing the rest of the assembly process after stacking the battery bodies of the present embodiment.
【図５】（Ａ）は本発明による電池の他の実施例を示す
縦断面図、（Ｂ）はその部分拡大図である。5A is a longitudinal sectional view showing another embodiment of the battery according to the present invention, and FIG. 5B is a partially enlarged view thereof.
１ 電池素体 ２、２Ａ 容器 ２ｂ 波状曲成部 ３ 蓋 ５、５Ａ、６、６Ａ 端子 ７ 弾性リング ８ 可撓性樹脂 １０ 正極集電体 １１ 正極材 １２ 負極集電体 １３ 負極材 １４ セパレータ １５ 熱収縮性シート １８ ガラス DESCRIPTION OF SYMBOLS 1 Battery element 2, 2A container 2b Wavy bending part 3 Lid 5, 5A, 6, 6A Terminal 7 Elastic ring 8 Flexible resin 10 Positive electrode collector 11 Positive electrode material 12 Negative electrode collector 13 Negative electrode material 14 Separator 15 Heat shrinkable sheet 18 glass
Claims (3)
レータもしくは固体電解質と、負極材とを交互に１組以
上積層してなる積層型リチウムニ次電池において、前記
各素材の積層体を弾性を有する熱収縮チューブによって
一体的に束ね、該束ねた積層体を開口面に蓋を設けた容
器内に収容し、該積層体に設けた集電体を容器に一体に
設けた端子に接続し、該容器と蓋との間を弾性リングで
密封すると共に、該弾性リングを設けた部分に可撓性樹
脂を施して二重密封したことを特徴とする積層型リチウ
ム二次電池。1. A laminated lithium secondary battery in which one or more sets of a current collector, a positive electrode material, a separator containing an electrode material or a solid electrolyte, and a negative electrode material are alternately laminated, wherein the materials are laminated. A terminal in which the body is integrally bundled by a heat-shrinkable tube having elasticity, the bundled stack is housed in a container having a lid on the opening surface, and the current collector provided in the stack is integrally provided in the container. The laminated lithium secondary battery is characterized in that the elastic ring is connected between the container and the lid, and a flexible resin is applied to a portion where the elastic ring is provided to perform double sealing.
前記端子の少なくとも一方は、ガラスハーメリード端子
であることを特徴とする積層型リチウム二次電池。2. The container according to claim 1, wherein the container is made of metal,
At least one of the terminals is a glass herme lead terminal, wherein a laminated lithium secondary battery is provided.
に全周にわたって断面が波状をなす曲成部を形成して積
層体の積層方向に伸縮性を持たせたことを特徴とする積
層型リチウム二次電池。3. The laminate according to claim 1, wherein a curved portion having a wavy cross section is formed over the entire side surface of the container so as to have elasticity in the laminating direction of the laminated body. Type lithium secondary battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6034117A JPH07220754A (en) | 1994-02-07 | 1994-02-07 | Layer built lithium secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6034117A JPH07220754A (en) | 1994-02-07 | 1994-02-07 | Layer built lithium secondary battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07220754A true JPH07220754A (en) | 1995-08-18 |
Family
ID=12405323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6034117A Withdrawn JPH07220754A (en) | 1994-02-07 | 1994-02-07 | Layer built lithium secondary battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07220754A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6117576A (en) * | 1997-02-26 | 2000-09-12 | Rohm Co., Ltd. | Battery device |
| JP2002245998A (en) * | 2001-02-13 | 2002-08-30 | Toshiba Corp | Battery pack and battery |
| KR100522681B1 (en) * | 1999-10-25 | 2005-10-19 | 삼성에스디아이 주식회사 | Sealed battery |
| WO2012164723A1 (en) * | 2011-06-02 | 2012-12-06 | トヨタ自動車株式会社 | Method for manufacturing all-solid cell |
| WO2020202928A1 (en) * | 2019-03-29 | 2020-10-08 | 株式会社村田製作所 | Solid state battery |
| WO2023189693A1 (en) * | 2022-03-30 | 2023-10-05 | マクセル株式会社 | Battery and method for producing same |
-
1994
- 1994-02-07 JP JP6034117A patent/JPH07220754A/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6117576A (en) * | 1997-02-26 | 2000-09-12 | Rohm Co., Ltd. | Battery device |
| KR100522681B1 (en) * | 1999-10-25 | 2005-10-19 | 삼성에스디아이 주식회사 | Sealed battery |
| JP2002245998A (en) * | 2001-02-13 | 2002-08-30 | Toshiba Corp | Battery pack and battery |
| WO2012164723A1 (en) * | 2011-06-02 | 2012-12-06 | トヨタ自動車株式会社 | Method for manufacturing all-solid cell |
| US20140082931A1 (en) * | 2011-06-02 | 2014-03-27 | Toyota Jidosha Kabushiki Kaisha | Method for producing all solid state battery |
| WO2020202928A1 (en) * | 2019-03-29 | 2020-10-08 | 株式会社村田製作所 | Solid state battery |
| WO2023189693A1 (en) * | 2022-03-30 | 2023-10-05 | マクセル株式会社 | Battery and method for producing same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
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