JPH1021952A - Secondary battery - Google Patents
Secondary batteryInfo
- Publication number
- JPH1021952A JPH1021952A JP8188875A JP18887596A JPH1021952A JP H1021952 A JPH1021952 A JP H1021952A JP 8188875 A JP8188875 A JP 8188875A JP 18887596 A JP18887596 A JP 18887596A JP H1021952 A JPH1021952 A JP H1021952A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- negative electrode
- positive electrode
- secondary battery
- separator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- 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]
【発明の属する技術分野】この発明は、正極と負極の間
にセパレータを介してスパイラル状に巻き取った電極群
を電池容器内に収容させた二次電池に係り、特に、振動
が多く加わる電気自動車等に使用した場合であっても、
長期に亘って安定して使用できる二次電池に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a secondary battery in which a group of electrodes wound spirally between a positive electrode and a negative electrode with a separator interposed therebetween is housed in a battery container. Even when used in automobiles, etc.,
The present invention relates to a secondary battery that can be used stably for a long time.
【０００２】[0002]
【従来の技術】近年、様々な機器の開発やクリーンなエ
ネルギーの要求から二次電池が様々な分野で利用される
ようになり、高出力，高エネルギー密度でかつ長期に亘
って安定して使用できる二次電池の開発が要望されるよ
うになった。2. Description of the Related Art In recent years, secondary batteries have been used in various fields due to the development of various devices and demands for clean energy, and have been used stably for a long time with a high output and a high energy density. There has been a demand for the development of a secondary battery that can be used.
【０００３】また、近年においては、自動車等の排ガス
による大気汚染が世界的な問題となり、自動車の動力源
に電気を用いた電気自動車の開発が行なわれるようにな
り、このような電気自動車に使用するのに適した二次電
池の開発が要望されるようになった。In recent years, air pollution caused by exhaust gas from automobiles and the like has become a worldwide problem, and electric vehicles using electricity as a power source of automobiles have been developed. There has been a demand for the development of a secondary battery suitable for this purpose.
【０００４】ここで、従来より一般に使用されている円
筒型の二次電池においては、図１に示すように、正極１
と負極２との間にセパレータ３を介在させた状態でスパ
イラル状に巻き取った電極群を、負極端子４ａとなる電
池缶４ａと、正極端子４ｂとなる電池蓋４ｂとで構成さ
れる電池容器４内に収容させ、正極１に取り付けた正極
集電タブ５を電池蓋４ｂの内面に溶接すると共に、負極
２に取り付けた負極集電タブ６を電池缶４ａ内の底面部
に溶接して、上記のようにスパイラル状に巻き取った電
極群を電池容器４内に保持させるようにしていた。Here, in a conventional cylindrical secondary battery, as shown in FIG.
A battery container composed of a battery can 4a serving as a negative electrode terminal 4a and a battery lid 4b serving as a positive electrode terminal 4b, in which a group of electrodes wound spirally with a separator 3 interposed between the anode and the negative electrode 2 is provided. 4, the positive electrode current collecting tab 5 attached to the positive electrode 1 is welded to the inner surface of the battery cover 4b, and the negative electrode current collecting tab 6 attached to the negative electrode 2 is welded to the bottom surface inside the battery can 4a. The electrode group spirally wound as described above is held in the battery container 4.
【０００５】しかし、このような二次電池を電気自動車
等のように多く振動が加わる場所に使用した場合、この
二次電池にも振動が加わって、電池容器４内に収容され
た上記の電極群が電池容器４内で振動し、これにより上
記の正極集電タブ５や負極集電タブ６に材料疲労が生じ
て、この正極集電タブ５や負極集電タブ６が破壊された
りし、二次電池を長期に亘って安定して使用することが
できなくなる等の問題があった。However, when such a secondary battery is used in a place where a large amount of vibration is applied, such as an electric vehicle, the secondary battery is also subjected to the vibration, and the above-mentioned electrode housed in the battery container 4 is subjected to the vibration. The group vibrates in the battery container 4, whereby material fatigue occurs in the positive electrode current collecting tab 5 and the negative electrode current collecting tab 6, and the positive electrode current collecting tab 5 and the negative electrode current collecting tab 6 are destroyed. There has been a problem that the secondary battery cannot be used stably for a long period of time.
【０００６】[0006]
【発明が解決しようとする課題】この発明は、正極と負
極の間にセパレータを介した状態でこれらをスパイラル
状に巻いた電極群を電池容器内に収容させた二次電池に
おける上記のような問題を解決するものである。SUMMARY OF THE INVENTION The present invention relates to a secondary battery as described above in a secondary battery in which a separator is interposed between a positive electrode and a negative electrode, and a spirally wound electrode group is accommodated in a battery container. It solves the problem.
【０００７】すなわち、この発明においては、上記のよ
うな二次電池を電気自動車等のように振動が多く加わる
場所に使用した場合であっても、電池容器内に収容され
た上記の電極群が電池容器内で振動して、正極集電タブ
や負極集電タブが破壊されたりするということが少な
く、長期に亘って安定して使用できる二次電池を提供す
ることを課題とするものである。That is, according to the present invention, even when the above-described secondary battery is used in a place where a large amount of vibration is applied, such as an electric vehicle, the above-mentioned electrode group accommodated in the battery container is not used. It is an object of the present invention to provide a secondary battery that can be used stably for a long period of time without vibrating in a battery container and causing breakage of a positive electrode current collecting tab and a negative electrode current collecting tab. .
【０００８】[0008]
【課題を解決するための手段】この発明における二次電
池においては、上記のような課題を解決するため、正極
と負極の間にセパレータを介した状態で巻き芯を用いて
スパイラル状に巻き取った電極群を、上記の巻き芯を介
して電池容器内に固定させるようにした。In order to solve the above-mentioned problems, a secondary battery according to the present invention is wound in a spiral shape using a winding core with a separator interposed between a positive electrode and a negative electrode. The electrode group was fixed in the battery container via the above-mentioned winding core.
【０００９】そして、この発明における二次電池のよう
に、巻き芯を用いてスパイラル状に巻き取った電極群を
この巻き芯を介して電池容器内に固定させると、電気自
動車等のように振動が多く加わる場所に使用した場合で
あっても、この電池容器内に収容された上記の電極群が
電池容器内で振動するのが抑制され、従来の二次電池の
ように、電池容器内に設けられた正極集電タブや負極集
電タブ等が振動によって破壊されるということが少なく
なり、長期に亘って安定して使用できるようになる。[0009] When the electrode group spirally wound using a core like the secondary battery according to the present invention is fixed in a battery container through the core, vibration occurs as in an electric vehicle or the like. Even when the battery is used in a place where a large amount of water is added, the above-described electrode group housed in the battery container is suppressed from vibrating in the battery container, and the electrode group is placed in the battery container as in a conventional secondary battery. The provided positive current collecting tab, negative current collecting tab, and the like are less likely to be broken by vibration, and can be used stably for a long period of time.
【００１０】ここで、この発明の二次電池において、上
記のように巻き芯を用いてスパイラル状に巻き取った電
極群を、この巻き芯を介して電池容器内に固定させるに
あたっては、例えば、電池容器内に巻き芯を取り付ける
固定用部材を設け、この固定用部材に巻き芯を取り付け
て上記の電極群を電池容器内に固定させるようにした
り、電池容器内における正極端子側及び負極端子側にそ
れぞれ巻き芯の端部を取り付ける取付部を設け、各取付
部に巻き芯の端部を取り付けて上記の電極群を電池容器
内に固定させるようにすることができる。Here, in the secondary battery of the present invention, when the electrode group wound in a spiral shape using the core as described above is fixed in the battery container through the core, for example, A fixing member for attaching a core in the battery container is provided, and the core is attached to the fixing member so that the above-mentioned electrode group is fixed in the battery container, or the positive electrode terminal side and the negative electrode terminal side in the battery container. In this case, mounting portions for attaching the ends of the winding cores are provided, and the end portions of the winding cores are mounted on the respective mounting portions so that the above-mentioned electrode group can be fixed in the battery container.
【００１１】また、上記の巻き芯としては、アルミニウ
ム等の金属製のものや、ポリエチレン，ポリプロピレ
ン，ポリイミド等の樹脂製のものを用いることができる
が、上記のように電池容器内における正極端子側及び負
極端子側にそれぞれ取付部を設け、各取付部に巻き芯の
端部を取り付ける場合においては、この巻き芯を通して
ショートしないようにするため、少なくともこの巻き芯
における両端部をそれぞれ絶縁材料で構成することが必
要となる。The core may be made of a metal such as aluminum or a resin made of a resin such as polyethylene, polypropylene or polyimide. In the case where mounting portions are provided on the negative electrode terminal side and ends of the winding core are mounted on the respective mounting portions, at least both ends of the winding core are made of an insulating material, respectively, in order to prevent a short circuit through the winding core. It is necessary to do.
【００１２】また、上記のように巻き芯を用いて正極と
負極の間にセパレータを介した状態でスパイラル状に巻
き取るにあたっては、上記の巻き芯にセパレータ取付用
のスリットを設け、このスリット内にセパレータを挿入
させて、セパレータを巻き芯に巻き付けると共に、その
両側から正極と負極を差し込んで巻き取るようにする
と、セパレータを介した状態で正極と負極がうまく巻き
取られるようになる。When the spiral winding is performed with the separator interposed between the positive electrode and the negative electrode using the winding core as described above, a slit for mounting the separator is provided on the winding core. When the separator is inserted into the core, the separator is wound around the winding core, and the positive electrode and the negative electrode are inserted from both sides of the separator and wound up, so that the positive electrode and the negative electrode can be wound well with the separator interposed therebetween.
【００１３】ここで、この発明における二次電池におい
て、その正極や負極に使用する材料は特に限定されず、
様々な種類の二次電池に応用することができ、例えば、
リチウム二次電池、ニッケル・水素二次電池、ニッケル
・カドミウム二次電池等に利用することができる。Here, in the secondary battery of the present invention, the materials used for the positive electrode and the negative electrode are not particularly limited.
It can be applied to various types of secondary batteries, for example,
It can be used for lithium secondary batteries, nickel-hydrogen secondary batteries, nickel-cadmium secondary batteries, and the like.
【００１４】ここで、この発明における二次電池がリチ
ウム二次電池の場合、その正極に使用する正極材料とし
ては、リチウムイオンを吸蔵，放出することができる公
知の正極材料を用いることができ、例えば、マンガン，
コバルト，ニッケル，鉄，バナジウム，ニオブの少なく
とも１種を含むリチウム遷移金属複合酸化物等を使用す
ることができる。また、その負極に使用する負極材料と
しても、公知の負極材料を用いることができ、例えば、
金属リチウム，リチウム合金の他に、リチウムイオンを
吸蔵，放出することができる黒鉛等の炭素材料を用いる
ことができる。さらに、電解質として使用する非水電解
液も、従来より使用されている公知の非水電解液を用い
ることができ、その溶媒としては、例えば、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、ビニレンカーボネート、シクロペンタノン、ス
ルホラン、ジメチルスルホラン、３−メチル−１，３−
オキサゾリジン−２−オン、γ−ブチロラクトン、ジメ
チルカーボネート、ジエチルカーボネート、エチルメチ
ルカーボネート、メチルプロピルカーボネート、ブチル
メチルカーボネート、エチルプロピルカーボネート、ブ
チルエチルカーボネート、ジプロピルカーボネート、
１，２−ジメトキシエタン、テトラヒドロフラン、２−
メチルテトラヒドロフラン、１，３−ジオキソラン、酢
酸メチル、酢酸エチル等の有機溶媒を１種又は２種以上
組み合わせたものを使用することができる。また、この
ような溶媒に溶解させる溶質としては、例えば、ＬｉＰ
Ｆ6 、ＬｉＢＦ4 、ＬｉＣｌＯ4 、ＬｉＣＦ3 ＳＯ3 、
ＬｉＡｓＦ6 、ＬｉＮ（ＣＦ3 ＳＯ2 ）2 、ＬｉＯＳＯ
2 （ＣＦ2 ）3 ＣＦ3 等のリチウム化合物を使用するこ
とができる。Here, when the secondary battery in the present invention is a lithium secondary battery, a known cathode material capable of inserting and extracting lithium ions can be used as the cathode material used for the cathode. For example, manganese,
A lithium transition metal composite oxide containing at least one of cobalt, nickel, iron, vanadium, and niobium can be used. In addition, as the negative electrode material used for the negative electrode, a known negative electrode material can be used.
In addition to metal lithium and a lithium alloy, a carbon material such as graphite that can occlude and release lithium ions can be used. Further, the non-aqueous electrolyte used as the electrolyte can also be a known non-aqueous electrolyte that has been conventionally used. Examples of the solvent include ethylene carbonate, propylene carbonate, butylene carbonate, vinylene carbonate, and cyclohexane. Pentanone, sulfolane, dimethyl sulfolane, 3-methyl-1,3-
Oxazolidine-2-one, γ-butyrolactone, dimethyl carbonate, diethyl carbonate, ethyl methyl carbonate, methyl propyl carbonate, butyl methyl carbonate, ethyl propyl carbonate, butyl ethyl carbonate, dipropyl carbonate,
1,2-dimethoxyethane, tetrahydrofuran, 2-
One or a combination of two or more organic solvents such as methyltetrahydrofuran, 1,3-dioxolan, methyl acetate, and ethyl acetate can be used. As a solute to be dissolved in such a solvent, for example, LiP
F 6 , LiBF 4 , LiClO 4 , LiCF 3 SO 3 ,
LiAsF 6 , LiN (CF 3 SO 2 ) 2 , LiOSO
Lithium compounds such as 2 (CF 2 ) 3 CF 3 can be used.
【００１５】また、この発明における二次電池がニッケ
ル・水素二次電池の場合には、その正極に使用する正極
材料として、水酸化ニッケルやオキシ水酸化ニッケルを
用いることができ、また負極に使用する負極材料とし
て、ミッシュメタル（以下、Ｍｍと略す。）系の水素吸
蔵合金や、チタン−ニッケル系等のＬａｖａｓ相合金か
らなる水素吸蔵合金等を使用することができる。When the secondary battery in the present invention is a nickel-metal hydride secondary battery, nickel hydroxide or nickel oxyhydroxide can be used as the positive electrode material used for the positive electrode, and the negative electrode can be used for the negative electrode. As the negative electrode material to be used, a misch metal (hereinafter abbreviated as Mm) -based hydrogen storage alloy, a titanium-nickel-based Lavas phase alloy or the like hydrogen storage alloy can be used.
【００１６】[0016]
【実施例】以下、この発明に係る二次電池について実施
例を挙げて具体的に説明すると共に、この実施例に係る
二次電池が振動等に対する耐久性に優れていることを比
較例を挙げて明らかにする。なお、この発明における二
次電池は下記の実施例に示したものに限定されるもので
はなく、その要旨を変更しない範囲において適宜変更し
て実施できるものである。EXAMPLES Hereinafter, the secondary battery according to the present invention will be specifically described with reference to examples, and a comparative example will be described in which the secondary battery according to this example has excellent durability against vibration and the like. To reveal. The secondary battery according to the present invention is not limited to those shown in the following examples, but can be implemented by appropriately changing the scope of the invention without changing its gist.
【００１７】（実施例１）この実施例においては、下記
のようにして作製した正極と負極と非水電解液とを用
い、直径２０ｍｍ、高さ１００ｍｍになった図２に示す
ような円筒型の二次電池を作製した。(Example 1) In this example, a cylindrical type having a diameter of 20 mm and a height of 100 mm as shown in FIG. Was manufactured.
【００１８】［正極の作製］正極を作製するにあたって
は、正極材料として、平均粒径が５μｍのリチウム含有
二酸化コバルトＬｉＣｏＯ2 粉末を用い、このＬｉＣｏ
Ｏ2 粉末と導電剤である人工黒鉛とを重量比９：１の割
合で混合して正極合剤を得た。そして、Ｎ−メチル−２
−ピロリドン（以下、ＮＭＰと略す。）に結着剤のポリ
フッ化ビニリデンを溶解させたＮＭＰ溶液と上記の正極
合剤とを混練して、正極合剤とポリフッ化ビニリデンと
の重量比が９５：５になったスラリーを調製し、このス
ラリーを正極集電体である厚み２０μｍのアルミニウム
箔の両面にドクターブレード法により塗布し、これを１
５０℃で２時間真空乾燥させて、シート状になった正極
を作製した。[Preparation of Positive Electrode] In preparing the positive electrode, a lithium-containing cobalt dioxide LiCoO 2 powder having an average particle diameter of 5 μm was used as a positive electrode material.
O 2 powder and artificial graphite as a conductive agent were mixed at a weight ratio of 9: 1 to obtain a positive electrode mixture. And N-methyl-2
-An NMP solution in which polyvinylidene fluoride as a binder is dissolved in pyrrolidone (hereinafter abbreviated as NMP) is kneaded with the above-mentioned positive electrode mixture, and the weight ratio of the positive electrode mixture and polyvinylidene fluoride is 95: 5 was prepared, and this slurry was applied to both surfaces of a 20 μm-thick aluminum foil serving as a positive electrode current collector by a doctor blade method.
Vacuum drying was performed at 50 ° C. for 2 hours to produce a sheet-shaped positive electrode.
【００１９】［負極の作製］負極を作製するにあたって
は、炭素塊（ｄ００２＝３．３５６Å；Ｌｃ＞１０００
Å）に空気流を噴射して粉砕させた黒鉛粉末を用い、こ
の黒鉛粉末と、結着剤であるポリフッ化ビニリデンをＮ
ＭＰに溶解させたＮＭＰ溶液とを混練して、黒鉛粉末と
ポリフッ化ビニリデンの重量比が８５：１５になったス
ラリーを調製し、このスラリーを負極集電体である厚み
２０μｍの銅箔の両面にドクターブレード法により塗布
し、これを１５０℃で２時間真空乾燥させて、シート状
になった負極を作製した。[Preparation of Negative Electrode] In preparing the negative electrode, a carbon lump (d002 = 3.356 °; Lc> 1000) was used.
Å) is made of graphite powder pulverized by injecting an air flow into the powder, and this graphite powder and polyvinylidene fluoride as a binder
An NMP solution dissolved in MP was kneaded to prepare a slurry in which the weight ratio of graphite powder to polyvinylidene fluoride was 85:15, and this slurry was coated on both sides of a negative electrode current collector copper foil having a thickness of 20 μm. Was applied by a doctor blade method and vacuum-dried at 150 ° C. for 2 hours to produce a sheet-shaped negative electrode.
【００２０】［非水電解液の作製］非水電解液を作製す
るにあたっては、エチレンカーボネートとジエチルカー
ボネートとを１：１の体積比で混合させた混合溶媒に、
溶質としてヘキサフルオロリン酸リチウムＬｉＰＦ6 を
１ｍｏｌ／ｌの割合で溶解させて非水電解液を作製し
た。[Preparation of Non-Aqueous Electrolyte] In preparing a non-aqueous electrolyte, a mixed solvent obtained by mixing ethylene carbonate and diethyl carbonate at a volume ratio of 1: 1 is used.
As a solute, lithium hexafluorophosphate LiPF 6 was dissolved at a rate of 1 mol / l to prepare a non-aqueous electrolyte.
【００２１】［電池の作製］この実施例の二次電池を作
製するにあたっては、直径４ｍｍの円筒状になったアル
ミニウム製の巻き芯１０に、その軸方向に沿ってセパレ
ータ取付用のスリット１１を設け、この巻き芯１０のス
リット１１にイオン透過性のポリプロピレン製微多孔膜
からなるセパレータ３を通して、セパレータ３をこの巻
き芯１０に数周巻いた後、セパレータ３の両側から上記
の正極１と負極２とをセパレータ３を介して対向するよ
うにスパイラル状に多数回巻き取り、正極１と負極２の
間にセパレータ３が挟まれた状態でスパイラル状に巻き
取られた電極群を得た。[Fabrication of Battery] In fabricating the secondary battery of this embodiment, a slit 11 for mounting a separator is formed along the axial direction of a cylindrical aluminum core 10 having a diameter of 4 mm. A separator 3 made of an ion-permeable polypropylene microporous film is passed through a slit 11 of the winding core 10, and the separator 3 is wound around the winding core 10 several times. 2 was spirally wound many times so as to face each other with the separator 3 interposed therebetween, and an electrode group spirally wound with the separator 3 sandwiched between the positive electrode 1 and the negative electrode 2 was obtained.
【００２２】また、電池容器４としては、負極端子４ａ
となる電池缶４ａと正極端子４ｂとなる電池蓋４ｂとで
構成されたものを用い、上記の巻き芯１０をこの電池容
器４内に固定させる固定用部材２０として、一対の円板
状になったＳＵＳ製の取付板２０ａ，２０ｂを用い、各
取付板２０ａ，２０ｂの中心部にそれぞれ巻き芯１０の
端部を差し込んで巻き芯１０を取り付ける取付穴２１を
設けると共に、一方の取付板２０ａには上記の正極１の
集電体に取り付けた正極集電タブ５を通すための貫通穴
２２ａを設け、また他方の取付板２０ｂには上記の負極
２の集電体に取り付けた負極集電タブ６を通すための貫
通穴２２ｂを設けた。The battery container 4 includes a negative electrode terminal 4a.
And a battery cover 4b serving as a positive electrode terminal 4b. The fixing member 20 for fixing the winding core 10 in the battery container 4 has a pair of disk shapes. Using SUS mounting plates 20a and 20b, mounting holes 21 for mounting the core 10 by inserting the ends of the winding cores 10 are provided in the center portions of the mounting plates 20a and 20b, respectively. Is provided with a through hole 22a for passing the positive electrode current collecting tab 5 attached to the current collector of the positive electrode 1, and the other mounting plate 20b is provided with a negative electrode current collecting tab attached to the current collector of the negative electrode 2. 6 was provided.
【００２３】そして、上記のように巻き取った電極群に
おける巻き芯１０の端部をそれぞれ取付板２０ａ，２０
ｂの中心部に設けられた各取付穴２１に差し込んで、こ
の一対の取付板２０ａ，２０ｂ間に巻き芯１０によって
巻き取られた電極群を保持させると共に、上記のように
取付板２０ａ，２０ｂに設けられた貫通穴２２ａ，２２
ｂにそれぞれ正極集電タブ５と負極集電タブ６を通し、
正極集電タブ５と負極集電タブ６とをそれぞれの取付板
２０ａ，２０ｂから外方に取り出し、一方の取付板２０
ｂの貫通穴２２ｂから外方に取り出された負極集電タブ
６が電池缶４ａの底面部側に向くようにして、巻き芯１
０を介して取付板２０ａ，２０ｂ間に固定された電極群
をこの電池缶４ａ内に差し込み、この電極群を電池缶４
ａ内に固定させるようにした。Then, the ends of the winding core 10 in the electrode group wound as described above are attached to the mounting plates 20a and 20a, respectively.
b, the electrode group wound by the winding core 10 is held between the pair of mounting plates 20a, 20b by inserting them into the mounting holes 21 provided at the center of the mounting plates 20a, 20b as described above. Through holes 22a, 22 provided in
b through the positive electrode current collecting tab 5 and the negative electrode current collecting tab 6, respectively.
The positive electrode current collecting tab 5 and the negative electrode current collecting tab 6 are taken out from the respective mounting plates 20a and 20b, and one of the mounting plates 20a and 20b is taken out.
b, so that the negative electrode current collecting tab 6 taken out from the through hole 22b of the battery core 4b faces the bottom of the battery can 4a.
The electrode group fixed between the mounting plates 20a and 20b through the battery can 4a is inserted into the battery can 4a.
a.
【００２４】そして、一方の取付板２０ｂの貫通穴２２
ｂから外方に取り出された負極集電タブ６を電池缶４ａ
内の底面部に溶接すると共に、他方の取付板２０ａの貫
通穴２２ａから外方に取り出された正極集電タブ５を電
池蓋４ｂの内面側に溶接した後、上記の非水電解液を電
池缶４ａ内に注液し、その後、上記の電池蓋４ｂの周囲
に取り付けた絶縁パッキン７により電池蓋４ｂと電池缶
４ａとを電気的に分離させるようにして、この電池蓋４
ｂにより電池缶４ａを封口して二次電池を作製した。Then, the through hole 22 of the one mounting plate 20b
b to the battery can 4a.
After welding the positive electrode current collecting tab 5 taken out from the through hole 22a of the other mounting plate 20a to the inner surface side of the battery cover 4b, the above non-aqueous electrolyte is The liquid is poured into the can 4a, and then the battery cover 4b and the battery can 4a are electrically separated by the insulating packing 7 attached around the battery cover 4b.
b, the battery can 4a was sealed to produce a secondary battery.
【００２５】（実施例２）この実施例においては、上記
の実施例１と同様にして作製した正極，負極及び非水電
解液を用いるようにした。Example 2 In this example, a positive electrode, a negative electrode and a non-aqueous electrolyte prepared in the same manner as in Example 1 were used.
【００２６】そして、この実施例の二次電池を作製する
にあたっては、図３に示すように、直径４ｍｍの円筒状
になったポリエチレン製の巻き芯１０を用い、この巻き
芯１０の軸方向に沿ってセパレータ取付用のスリット１
１を設け、実施例１の場合と同様にして、正極１と負極
２の間にセパレータ３が挟まれた状態でスパイラル状に
巻き取られた電極群を得た。In manufacturing the secondary battery of this embodiment, a cylindrical polyethylene core 10 having a diameter of 4 mm is used as shown in FIG. Slit 1 for mounting separator along
1 in the same manner as in Example 1 to obtain a spirally wound electrode group with the separator 3 sandwiched between the positive electrode 1 and the negative electrode 2.
【００２７】また、この実施例においても電池容器４と
して、負極端子４ａとなる電池缶４ａと正極端子４ｂと
なる電池蓋４ｂとで構成されたものを用いる一方、この
実施例においては、上記の電池缶４ａ内の底面部の中心
部及び電池蓋４ｂ内面の中心部にそれぞれ上記の巻き芯
１０の端部を差し込んで取り付けるための取付部３０を
設けるようにした。In this embodiment, a battery container 4 having a battery can 4a serving as a negative electrode terminal 4a and a battery cover 4b serving as a positive electrode terminal 4b is used. Attachment portions 30 for inserting and attaching the ends of the above-mentioned core 10 are respectively provided at the center of the bottom surface in battery can 4a and the center of the inner surface of battery lid 4b.
【００２８】そして、上記のように電極群を巻きとった
巻き芯１０の一方の端部を電池缶４ａ内の底面部に設け
られた取付部３０に差し込んで取り付け、上記の電極群
を電池缶４ａ内に収容させ、負極２の集電体に取り付け
られた負極集電タブ６を電池缶４ａ内の底面部に溶接す
ると共に、正極１の集電体に取り付けられた正極集電タ
ブ５を電池蓋４ｂの内面側に溶接した後、上記の非水電
解液を電池缶４ａ内に注液し、その後、電池蓋４ｂ内面
に設けられた上記の取付部３０に巻き芯１０の端部を差
し込み、この巻き芯１０を介して上記の電極群を電池容
器４内に固定させると共に、電池蓋４ｂの周囲に取り付
けた絶縁パッキン７によって電池蓋４ｂと電池缶４ａと
を電気的に分離させるようにして電池缶４ａを電池蓋４
ｂにより封口させて二次電池を作製した。Then, one end of the winding core 10 around which the electrode group is wound as described above is inserted into the mounting portion 30 provided on the bottom surface in the battery can 4a, and is mounted. 4a, the negative electrode current collector tab 6 attached to the current collector of the negative electrode 2 was welded to the bottom of the battery can 4a, and the positive electrode current collector tab 5 attached to the current collector of the positive electrode 1 was removed. After welding to the inner surface side of the battery cover 4b, the above non-aqueous electrolyte is poured into the battery can 4a, and then the end of the core 10 is attached to the mounting portion 30 provided on the inner surface of the battery cover 4b. The battery group is inserted through the core 10 to fix the above-mentioned electrode group in the battery case 4, and the battery cover 4 b and the battery can 4 a are electrically separated by the insulating packing 7 attached around the battery cover 4 b. And the battery can 4a to the battery cover 4
b to complete the secondary battery.
【００２９】（比較例１）この比較例においても、上記
実施例１，２の場合と同様にして作製した正極と負極と
非水電解液を用いるようにした。Comparative Example 1 Also in this comparative example, a positive electrode, a negative electrode and a non-aqueous electrolyte prepared in the same manner as in Examples 1 and 2 were used.
【００３０】そして、この比較例の二次電池を作製する
にあたっては、図１に示した従来の二次電池の場合と同
様に、正極１と負極２との間にセパレータ３を介在させ
た状態でスパイラル状に巻き取った電極群を電池缶４ａ
内に収容させ、負極２の集電体に取り付けられた負極集
電タブ６を電池缶４ａ内の底面部に溶接すると共に、正
極１の集電体に取り付けられた正極集電タブ５を電池蓋
４ｂの内面に溶接し、上記の非水電解液を電池缶４ａ内
に注液させた後、電池蓋４ｂの周囲に取り付けた絶縁パ
ッキン７によって電池蓋４ｂと電池缶４ａとを電気的に
分離させるようにして電池缶４ａを電池蓋４ｂにより封
口させて二次電池を作製した。In producing the secondary battery of this comparative example, the separator 3 was interposed between the positive electrode 1 and the negative electrode 2 as in the case of the conventional secondary battery shown in FIG. The electrode group wound spirally with the battery can 4a
The negative electrode current collecting tab 6 attached to the current collector of the negative electrode 2 is welded to the bottom of the battery can 4a, and the positive electrode current collecting tab 5 attached to the current collector of the positive electrode 1 is attached to the battery. After welding to the inner surface of the lid 4b and injecting the above non-aqueous electrolyte into the battery can 4a, the battery lid 4b and the battery can 4a are electrically connected by the insulating packing 7 attached around the battery lid 4b. The battery can 4a was sealed with the battery lid 4b so as to be separated, thereby producing a secondary battery.
【００３１】次に、上記のようにして作製した実施例
１，２及び比較例１の各二次電池をそれぞれ１０個用
い、各二次電池についてそれぞれ振幅１ｍｍ，周波数５
０Ｈｚの振動条件で１時間の振動試験を行ない、正極集
電タブ５や負極集電タブ６等が破壊された不良品の発生
個数を調べた。Next, ten each of the secondary batteries of Examples 1 and 2 and Comparative Example 1 manufactured as described above were used, and each secondary battery had an amplitude of 1 mm and a frequency of 5
A vibration test for one hour was performed under the vibration condition of 0 Hz, and the number of defective products in which the positive electrode current collecting tab 5, the negative electrode current collecting tab 6, and the like were broken was examined.
【００３２】この結果、上記の比較例１の二次電池にお
いては、６個の不良品が発生したのに対して、実施例
１，２の各二次電池において、不良品の発生はいずれも
ゼロであり、実施例１，２の二次電池のように正極１と
負極２とをセパレータ３を介してスパイラル状に巻いた
電極群を巻き芯１０によって電池容器４に固定させた場
合には、振動に対する耐久性が向上していた。As a result, in the secondary battery of Comparative Example 1 described above, six defective products were generated, whereas in each of the secondary batteries of Examples 1 and 2, defective products were generated. In the case where the electrode group in which the positive electrode 1 and the negative electrode 2 are spirally wound via the separator 3 as in the secondary batteries of Examples 1 and 2 is fixed to the battery container 4 by the winding core 10, And the durability against vibration was improved.
【００３３】[0033]
【発明の効果】以上詳述したように、この発明における
二次電池においては、巻き芯を用いてスパイラル状に巻
き取った電極群をこの巻き芯を介して電池容器内に固定
させるようにしたため、この二次電池が振動しても、電
池容器内に収容された上記の電極群が電池容器内で振動
するのが抑制され、電池容器内に設けられた正極集電タ
ブや負極集電タブ等がこの振動によって破壊されるとい
うことが少なくなり、電気自動車等のように振動が多く
加わる場所に使用した場合であっても、長期に亘って安
定して使用できる二次電池が得られた。As described in detail above, in the secondary battery according to the present invention, the electrode group spirally wound using the core is fixed in the battery container via the core. Even if the secondary battery vibrates, the above-described electrode group accommodated in the battery container is suppressed from vibrating in the battery container, and the positive electrode current collecting tab and the negative electrode current collecting tab provided in the battery container are suppressed. Are less likely to be destroyed by this vibration, and a secondary battery that can be used stably for a long period of time can be obtained even when used in places where a lot of vibration is applied such as electric vehicles. .
【図１】従来の円筒形の二次電池の内部構造を示した断
面説明図である。FIG. 1 is an explanatory sectional view showing the internal structure of a conventional cylindrical secondary battery.
【図２】この発明の実施例１に係る二次電池の内部構造
を示した断面説明図である。FIG. 2 is an explanatory sectional view showing the internal structure of the secondary battery according to Embodiment 1 of the present invention.
【図３】この発明の実施例２に係る二次電池の内部構造
を示した断面説明図である。FIG. 3 is an explanatory sectional view showing an internal structure of a secondary battery according to Embodiment 2 of the present invention.
１ 正極 ２ 負極 ３ セパレータ ４ 電池容器 １０ 巻き芯 ２０ 固定用部材 ３０ 取付部 DESCRIPTION OF SYMBOLS 1 Positive electrode 2 Negative electrode 3 Separator 4 Battery container 10 Core 20 Fixing member 30 Mounting part
フロントページの続き (72)発明者 能間 俊之 大阪府守口市京阪本通２丁目５番５号 三 洋電機株式会社内 (72)発明者 西尾 晃治 大阪府守口市京阪本通２丁目５番５号 三 洋電機株式会社内Continued on the front page (72) Inventor Toshiyuki Noma 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Koji Nishio 2-5-2-5 Keihanhondori, Moriguchi-shi, Osaka No. Sanyo Electric Co., Ltd.
Claims (3)
態で巻き芯を用いてスパイラル状に巻き取った電極群
を、上記の巻き芯を介して電池容器内に固定させたこと
を特徴とする二次電池。An electrode group spirally wound using a core with a separator interposed between a positive electrode and a negative electrode is fixed in a battery container via the core. Rechargeable battery.
上記の巻き芯を電池容器内に設けられた固定用部材に取
り付けて、上記の電極群を電池容器内に固定させたこと
を特徴とする二次電池。2. The secondary battery according to claim 1, wherein
A secondary battery, wherein the winding core is attached to a fixing member provided in a battery container, and the electrode group is fixed in the battery container.
上記の巻き芯の少なくとも両端部を絶縁材料で構成する
と共に、上記の電池容器内における正極端子側及び負極
端子側にそれぞれ巻き芯の端部を取り付ける取付部を設
け、各取付部に巻き芯の端部を取り付けて、上記の電極
群を電池容器内に固定させたことを特徴とする二次電
池。3. The secondary battery according to claim 1, wherein
At least both ends of the above-mentioned core are made of an insulating material, and mounting portions for attaching the ends of the respective cores are provided on the positive electrode terminal side and the negative electrode terminal side in the battery container. A secondary battery, wherein an end is attached and the above-mentioned electrode group is fixed in a battery container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18887596A JP3426859B2 (en) | 1996-06-27 | 1996-06-27 | Rechargeable battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18887596A JP3426859B2 (en) | 1996-06-27 | 1996-06-27 | Rechargeable battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1021952A true JPH1021952A (en) | 1998-01-23 |
| JP3426859B2 JP3426859B2 (en) | 2003-07-14 |
Family
ID=16231410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18887596A Expired - Fee Related JP3426859B2 (en) | 1996-06-27 | 1996-06-27 | Rechargeable battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3426859B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7192671B2 (en) | 2002-03-29 | 2007-03-20 | Matsushita Electrical Industrial Co., Ltd. | Battery having nonconductive core |
| CN100440602C (en) * | 2004-06-25 | 2008-12-03 | 三星Sdi株式会社 | Cylindrical lithium rechargeable battery and method for fabricating the same |
| KR101018679B1 (en) | 2005-07-22 | 2011-03-04 | 파나소닉 주식회사 | Solid electrolytic capacitor |
| JP2011154970A (en) * | 2010-01-28 | 2011-08-11 | Hitachi Vehicle Energy Ltd | Sealed battery cell |
| WO2011111661A1 (en) * | 2010-03-12 | 2011-09-15 | 株式会社Ｇｓユアサ | Battery |
| JP2012079650A (en) * | 2010-10-06 | 2012-04-19 | Hitachi Vehicle Energy Ltd | Secondary battery |
| JP2015008089A (en) * | 2013-06-25 | 2015-01-15 | 株式会社Ｇｓユアサ | Battery |
| US9647246B2 (en) | 2012-07-31 | 2017-05-09 | Gs Yuasa International Ltd. | Battery |
-
1996
- 1996-06-27 JP JP18887596A patent/JP3426859B2/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7192671B2 (en) | 2002-03-29 | 2007-03-20 | Matsushita Electrical Industrial Co., Ltd. | Battery having nonconductive core |
| CN100440602C (en) * | 2004-06-25 | 2008-12-03 | 三星Sdi株式会社 | Cylindrical lithium rechargeable battery and method for fabricating the same |
| KR101018679B1 (en) | 2005-07-22 | 2011-03-04 | 파나소닉 주식회사 | Solid electrolytic capacitor |
| JP2011154970A (en) * | 2010-01-28 | 2011-08-11 | Hitachi Vehicle Energy Ltd | Sealed battery cell |
| WO2011111661A1 (en) * | 2010-03-12 | 2011-09-15 | 株式会社Ｇｓユアサ | Battery |
| CN102859776A (en) * | 2010-03-12 | 2013-01-02 | 株式会社杰士汤浅国际 | Battery |
| JPWO2011111661A1 (en) * | 2010-03-12 | 2013-06-27 | 株式会社Ｇｓユアサ | battery |
| JP5737631B2 (en) * | 2010-03-12 | 2015-06-17 | 株式会社Ｇｓユアサ | battery |
| JP2012079650A (en) * | 2010-10-06 | 2012-04-19 | Hitachi Vehicle Energy Ltd | Secondary battery |
| US9647246B2 (en) | 2012-07-31 | 2017-05-09 | Gs Yuasa International Ltd. | Battery |
| JP2015008089A (en) * | 2013-06-25 | 2015-01-15 | 株式会社Ｇｓユアサ | Battery |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3426859B2 (en) | 2003-07-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5165482B2 (en) | Winding type secondary battery | |
| JP5344236B2 (en) | Method for manufacturing lithium secondary battery | |
| JP2011070932A (en) | Lithium secondary battery | |
| JP2002237292A (en) | Nonaqueous electrolyte secondary battery | |
| JP4798729B2 (en) | Lithium ion secondary battery | |
| JP3426859B2 (en) | Rechargeable battery | |
| JP2004303597A (en) | Lithium secondary battery and manufacturing method of the same | |
| JP2013012448A (en) | Nonaqueous electrolyte secondary battery | |
| JP2007103295A (en) | Non-aqueous electrolyte secondary battery | |
| JP2003123764A (en) | Nonaqueous secondary battery | |
| JP2011086483A (en) | Laminated secondary battery | |
| JP2008243704A (en) | Cylindrical type nonaqueous electrolyte battery | |
| JP2003168404A (en) | Nonaqueous electrolyte battery | |
| JP2000306556A (en) | Framed battery | |
| JP2004259485A (en) | Nonaqueous electrolyte secondary battery | |
| JP2001357874A (en) | Nonaqueous electrolyte secondary battery | |
| JP4403447B2 (en) | Non-aqueous secondary battery | |
| JP4320526B2 (en) | Nonaqueous electrolyte secondary battery | |
| JP2001229970A (en) | Cylindrical lithium battery | |
| JP3363708B2 (en) | Rechargeable battery | |
| JP2001185220A (en) | Cylindrical lithium ion battery | |
| JP2001202997A (en) | Cylindrical lithium-ion battery | |
| JP2000323173A (en) | Nonaqueous secondary battery | |
| JP4389398B2 (en) | Non-aqueous electrolyte secondary battery | |
| JP2000306607A (en) | Nonaqueous electrolyte battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080509 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090509 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090509 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100509 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110509 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120509 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130509 Year of fee payment: 10 |
|
| LAPS | Cancellation because of no payment of annual fees |