JPH0574423A - High capacity battery - Google Patents
High capacity batteryInfo
- Publication number
- JPH0574423A JPH0574423A JP3255896A JP25589691A JPH0574423A JP H0574423 A JPH0574423 A JP H0574423A JP 3255896 A JP3255896 A JP 3255896A JP 25589691 A JP25589691 A JP 25589691A JP H0574423 A JPH0574423 A JP H0574423A
- Authority
- JP
- Japan
- Prior art keywords
- thickness
- battery
- secondary battery
- lithium
- active material
- 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- Withdrawn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
- Sealing Battery Cases Or Jackets (AREA)
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、非水系二次電池に関す
る。更に詳しくは、本発明は、高容量化二次電池に関す
る。TECHNICAL FIELD The present invention relates to a non-aqueous secondary battery. More specifically, the present invention relates to a high capacity secondary battery.
【０００２】[0002]
【従来の技術】二次電池としては、従来、鉛蓄電池、ニ
ッケル−カドニウム電池等があるが、近年、移動体通信
機、ノートブック型パソコン、パームトップ型パソコ
ン、一体型ビデオカメラ、ポータブルＣＤプレーヤー、
ヘッドフォンステレオ、コードレス電話等の電子機器の
小型化、軽量化を図る上で、これらの電子機器の電源と
しての二次電池の高容量化が要望されている。2. Description of the Related Art Rechargeable batteries such as lead storage batteries and nickel-cadmium batteries have been used as secondary batteries, but in recent years, mobile communication devices, notebook computers, palmtop computers, integrated video cameras, portable CD players. ,
In order to reduce the size and weight of electronic devices such as headphone stereos and cordless phones, there is a demand for higher capacity secondary batteries as power sources for these electronic devices.
【０００３】リチウムイオンをドープ・脱ドープできる
炭素質材料を用いた非水系二次電池（例えば特開昭６２
−９０８６３号公報等）が、負極にリチウム金属又はそ
の合金を使用した二次電池に比して、安全性の点で格段
に優れており、高エネルギー密度を得られることから注
目されている。ニッケル−カドニウム電池の高容量化に
は、鋼板を絞り、更にしごき加工によって缶側厚を薄肉
化することが提案されている。A non-aqueous secondary battery using a carbonaceous material capable of doping and dedoping lithium ions (see, for example, JP-A-62-62).
-90863 gazette) is remarkably superior to a secondary battery using a lithium metal or an alloy thereof for a negative electrode in terms of safety, and it is noted that a high energy density can be obtained. In order to increase the capacity of the nickel-cadmonium battery, it has been proposed to reduce the thickness of the can side by drawing a steel plate and further ironing.
【０００４】しかしながら、負極活物質としてリチウム
イオンをドープしかつ脱ドープし得る炭素質材料を用い
た非水系二次電池においては、かかる鋼板からなる電池
缶では、過放電時（電池電圧が０．５Ｖ以下になる状
態）において、電池缶が腐蝕し、漏液してしまう。ま
た、ステンレススチール缶側厚を単純に薄肉化しても、
落下衝撃により、缶が変形し、内部短絡を誘発すること
になり、危険であった。However, in a non-aqueous secondary battery using a carbonaceous material that can be doped and dedoped with lithium ions as a negative electrode active material, a battery can made of such a steel plate is over-discharged (when the battery voltage is 0. In a state of 5 V or less), the battery can is corroded and leaks. Also, even if the thickness of the stainless steel can side is simply reduced,
The drop impact deformed the can, causing an internal short circuit, which was dangerous.
【０００５】[0005]
【発明が解決しようとする課題】非水系二次電池であっ
て、容量がより高く、落下衝撃に強く、かつ耐腐蝕性の
ある高容量電池を提供することにある。SUMMARY OF THE INVENTION It is an object of the present invention to provide a high capacity battery which is a non-aqueous secondary battery, has a higher capacity, is resistant to drop impact, and is corrosion resistant.
【０００６】[0006]
【課題を解決するための手段】すなわち、本発明は、負
極活物質として、リチウムイオンをドープしかつ脱ドー
プし得る炭素質材料を用いた非水系二次電池において、
電池缶材料がステンレススチールであり、缶側厚が０．
１０〜０．２０ｍｍ、缶底厚／缶側厚の比が５．０〜
１．７５であることを特徴とする、高容量二次電池であ
る。That is, the present invention provides a non-aqueous secondary battery using, as a negative electrode active material, a carbonaceous material that can be doped with lithium ions and dedoped.
The battery can material is stainless steel, and the can side thickness is 0.
10 to 0.20 mm, can bottom thickness / can side thickness ratio of 5.0 to
It is a high capacity secondary battery characterized by being 1.75.
【０００７】以下、本発明を具体的に説明する。本発明
の非水系二次電池の正極活物質としては、リチウムイオ
ンを脱ドープしかつドープし得るものであればよい。例
えば、リチウムコバルト酸化物： ＬｉX ＣｏY ＭZ Ｏ2 （ただし、ＭはＡｌ、Ｉｎ、Ｓｎの中から選ばれた少な
くとも１種の金属を表し、Ｘ、Ｙ、Ｚは各々０＜Ｘ≦
１．１、０．５＜Ｙ≦１、Ｚ≦０．１の数を表す。）The present invention will be specifically described below. The positive electrode active material of the non-aqueous secondary battery of the present invention may be any one that can dedoped and doped with lithium ions. For example, lithium cobalt oxide: Li X Co Y M Z O 2 (wherein M represents at least one metal selected from Al, In and Sn, and X, Y and Z are each 0 <X ≦.
1.1, 0.5 <Y ≦ 1, Z ≦ 0.1. )
【０００８】 ＬｉX ＣｏＯ2 （０＜Ｘ≦１）、 ＬｉX ＣｏY ＮｉZ Ｏ2 （０＜Ｘ≦１、Ｙ＋Ｚ＝１） リチウムニッケル酸化物、例えば ＬｉX ＮｉＯ2 （０＜Ｘ≦１）、 リチウムマンガン酸化物、例えば ＬｉX ＭｎＯ2 、ＬｉX Ｍｎ2 Ｏ4 （０＜Ｘ≦１）、 ＬｉＣｏX Ｍｎ2-X Ｏ4 （０＜Ｘ≦０．５）[0008] Li X CoO 2 (0 <X ≦ 1), Li X Co Y Ni Z O 2 (0 <X ≦ 1, Y + Z = 1) lithium nickel oxides such as Li X NiO 2 (0 <X ≦ 1 ), Lithium manganese oxide such as Li X MnO 2 , Li X Mn 2 O 4 (0 <X ≦ 1), LiCo X Mn 2-X O 4 (0 <X ≦ 0.5)
【０００９】リチウムクロム酸化物、例えば ＬｉX Ｃｒ3 Ｏ8 （０＜Ｘ≦１）、ＬｉＣｒＯ2 リチウムバナジウム酸化物、例えば ＬｉX Ｖ2 Ｏ5 （０＜Ｘ≦１）、ＬｉX Ｖ6 Ｏ13、Ｌｉ
1+X Ｖ3 Ｏ8 リチウムモリブデン酸化物、例えば ＬｉX ＭｏＯ3 リチウムモリブデン二硫化物、例えば ＬｉX ＭｏＳ2 Lithium chromium oxides such as Li X Cr 3 O 8 (0 <X ≦ 1), LiCrO 2 lithium vanadium oxides such as Li X V 2 O 5 (0 <X ≦ 1), Li X V 6 O 13 , Li
1 + X V 3 O 8 lithium molybdenum oxide, eg Li X MoO 3 lithium molybdenum disulfide, eg Li X MoS 2
【００１０】リチウムチタン酸化物、例えば ＬｉX Ｔｉ2 Ｏ4 リチウムチタン硫化物、例えば ＬｉX Ｔｉ2 Ｓ2 等がある。好ましくはリチウムコバルト酸化物、リチウ
ムマンガン酸化物、更に好ましくはリチウムコバルト酸
化物である。There are lithium titanium oxides such as Li X Ti 2 O 4 lithium titanium sulfides such as Li X Ti 2 S 2 . Lithium cobalt oxide and lithium manganese oxide are preferable, and lithium cobalt oxide is more preferable.
【００１１】集電体としての金属箔に接着している正極
活物質及びバインダーの膜厚は、片面当たり３０〜３０
０μｍ、好ましくは７０〜１３０μｍである。前記金属
箔としては、厚み５０μｍ〜１μｍのアルミニウム、ニ
ッケル、ステンレススチール等を用いることができる。
好ましくはアルミニウムであり、厚み３０〜８μｍ、更
に好ましくは１５〜１０μｍのものが用いられる。The film thickness of the positive electrode active material and the binder adhered to the metal foil as the current collector is 30 to 30 per one side.
It is 0 μm, preferably 70 to 130 μm. As the metal foil, aluminum, nickel, stainless steel or the like having a thickness of 50 μm to 1 μm can be used.
Aluminum is preferably used, and the thickness thereof is 30 to 8 μm, more preferably 15 to 10 μm.
【００１２】本発明の非水系二次電池の負極活物質とし
ての炭素質材料は、リチウムイオンをドープしかつ脱ド
ープし得るものであれば特に制限されないが、例えばグ
ラファイト、熱分解炭素、ピッチコークス、ニードルコ
ークス、石油コークス、有機高分子の焼成体（フェノー
ル樹脂、フラン樹脂、ポリアクリロニトリル等の焼成
体）等を用いることができる。The carbonaceous material as the negative electrode active material of the non-aqueous secondary battery of the present invention is not particularly limited as long as it can be doped with lithium ions and dedoped, and examples thereof include graphite, pyrolytic carbon and pitch coke. , Needle coke, petroleum coke, organic polymer fired products (phenol resin, furan resin, polyacrylonitrile, etc.) can be used.
【００１３】集電体としての金属箔として、厚み５０μ
ｍ〜１μｍの銅、ニッケル、ステンレススチール等を用
いる。好ましくは銅、ステンレススチールであり、厚み
３０〜６μｍ、更に好ましくは１２〜８μｍのものが用
いられる。前記金属箔に接着している負極活物質及びバ
インダーの膜厚は、片面当たり６０〜７５０μｍ、好ま
しくは１４０〜４００μｍである。A metal foil as a collector has a thickness of 50 μm.
Copper, nickel, stainless steel or the like having a thickness of m to 1 μm is used. Copper and stainless steel are preferable, and those having a thickness of 30 to 6 μm, and more preferably 12 to 8 μm are used. The film thickness of the negative electrode active material and the binder adhered to the metal foil is 60 to 750 μm, preferably 140 to 400 μm per one surface.
【００１４】これらの片面或いは両面に活物質及びバイ
ンダーを接着した金属箔をセパレータを介して巻回した
円筒型の巻回物を、本発明の電池缶に挿入し、リードタ
ブを取付け、非水系電解質溶液を含浸し、封口する。A cylindrical wound product obtained by winding a metal foil having an active material and a binder adhered on one or both sides through a separator is inserted into a battery can of the present invention, a lead tab is attached, and a non-aqueous electrolyte is attached. The solution is impregnated and sealed.
【００１５】本発明に用いる非水系電解質溶液には、電
解質としては、例えば ＬｉＣｌＯ4 、ＬｉＡｓＦ6 、ＬｉＰＦ6 、ＬｉＢ
Ｆ4 、ＣＨ3 ＳＯ3 Ｌｉ、ＣＦ3 ＳＯ3 Ｌｉ、（ＣＦ3
ＳＯ2 ）2 ＮＬｉ等のリチウム塩のいずれか１種又は２
種以上を混合したものが使用できる。The non-aqueous electrolyte solution used in the present invention includes, for example, LiClO 4 , LiAsF 6 , LiPF 6 , LiB as the electrolyte.
F 4 , CH 3 SO 3 Li, CF 3 SO 3 Li, (CF 3
Any one or two of lithium salts such as SO 2 ) 2 NLi
A mixture of two or more species can be used.
【００１６】また、前記電解溶液の溶媒としては、例え
ばプロピレンカーボネート、エ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、１，２−
ジメトキシエタン、１，２−ジエトキシエタン、γ−ブ
チロラクトン、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、スルホラン、メ
チルスルホラン、アセトニトリル、プロピオニトリル、
ギ酸メチル、ギ酸エチル、酢酸メチル、酢酸エチル等の
いずれか１種又は２種以上を混合したものが使用でき
る。As the solvent of the electrolytic solution, for example, propylene carbonate, ethylene carbonate, dimethyl carbonate, diethyl carbonate, 1,2-
Dimethoxyethane, 1,2-diethoxyethane, γ-butyrolactone, tetrahydrofuran, 2-methyltetrahydrofuran, 1,3-dioxolane, sulfolane, methylsulfolane, acetonitrile, propionitrile,
Any one kind or a mixture of two or more kinds such as methyl formate, ethyl formate, methyl acetate and ethyl acetate can be used.
【００１７】本発明に用いるセパレータとしては、ポリ
エチレン、ポリプロピレン等のポリオレフィンの微多孔
膜の１種の単独膜或いはそれらの１種又は２種以上の貼
り合わせ膜を使用できる。また、ポリオレフィン、ポリ
エステル、ポリアミド、セルロース等の不織布も単独で
或いは上記多孔膜と組み合わせて使用できる。As the separator used in the present invention, a single film of a microporous film of polyolefin such as polyethylene or polypropylene, or a single or two or more bonded films thereof can be used. Further, non-woven fabrics such as polyolefin, polyester, polyamide, and cellulose can be used alone or in combination with the above-mentioned porous membrane.
【００１８】本発明に用いる電池缶材質は、ステンレス
スチールであり、加工性の点でオーステナイト系が好ま
しくい。更に好ましくは３０４系、３０５系であり、最
も好ましくは３０５系である。本発明の電池缶は、例え
ば厚み０．５０〜０．３５μｍの前記ステンレススチー
ルの円形板を絞り、円筒型皿を作り、次に皿径と底厚を
できるだけ変えることなく、その側壁をしごき加工によ
って缶側厚０．１０〜０．２０ｍｍにする。缶側厚０．
１０ｍｍ未満では落下強度が不十分であり、０．２０ｍ
ｍを越える場合、平均薄肉化したものに比して、容量、
落下強度の点で有意差がなくなる。また、缶底部内径に
対する缶上端部内径の比は、ほぼ１、すなわちほぼ同一
とするのが好ましい。The material of the battery can used in the present invention is stainless steel, and austenitic is preferable from the viewpoint of workability. More preferred are 304 series and 305 series, and most preferred is 305 series. In the battery can of the present invention, for example, the circular plate of stainless steel having a thickness of 0.50 to 0.35 μm is squeezed to form a cylindrical dish, and then the side wall thereof is ironed without changing the dish diameter and the bottom thickness as much as possible. The can side thickness is set to 0.10 to 0.20 mm. Can side thickness 0.
If it is less than 10 mm, the drop strength is insufficient and 0.20 m
When it exceeds m, the capacity,
There is no significant difference in terms of drop strength. Further, the ratio of the inner diameter of the upper end portion to the inner diameter of the can bottom portion is preferably about 1, that is, substantially the same.
【００１９】[0019]
【実施例】本発明を実施例及び比較例によって本発明を
さらに詳細に説明するが、これらは本発明の範囲を制限
しない。The present invention will be described in more detail by way of Examples and Comparative Examples, which do not limit the scope of the present invention.
【実施例１】正極は、活物質のＬｉＣｏＳｎ0.02Ｏ2 に
対して５％の炭素系導電助剤を加えてなるコンパウンド
に、ポリビニリデンフルオライドの５％のＤＭＦ溶液を
同量加えて分散液とし、これを厚み１５μｍのアルミニ
ウム箔の両面に塗工し、乾燥し、圧縮プレスする。アル
ミニウム箔に接着している活物質及びバインダーの膜厚
は、片面当たり１０６μｍにする。Example 1 A positive electrode was prepared by adding 5% of a polyvinylidene fluoride DMF solution to a compound prepared by adding 5% of a carbon-based conductive additive to LiCoSn 0.02 O 2 which is an active material, and then adding a dispersion liquid. This is coated on both sides of an aluminum foil having a thickness of 15 μm, dried, and compressed and pressed. The thickness of the active material and the binder adhered to the aluminum foil is 106 μm on each side.
【００２０】また、負極は、活物質として平均粒子径９
μｍのピッチコークスにカルボキシメチルセルローズ１
とスチレン−ブタジエンゴムラテックス粒子２．５から
なる水溶液を同量加えて分散液とし、これを厚み１０μ
ｍの銅箔の両面に塗工し、乾燥し、圧縮プレスする。The negative electrode has an average particle size of 9 as an active material.
Carboxymethyl cellulose 1 in μm pitch coke
And a styrene-butadiene rubber latex particle 2.5 are added in the same amount to form a dispersion liquid, which has a thickness of 10 μm.
m copper foil is coated on both sides, dried and compression pressed.
【００２１】活物質及びバインダーとしてのカルボキシ
メチルセルローズ、スチレン−ブタジエンゴムからなる
膜厚は片面当たり２６５μｍとする。これらの正極、負
極を、巾４０．８ｍｍにサイジングし、リードタブをつ
けた後に、厚み３３μｍ、幅４４ｍｍのポリエチレン製
微多孔膜セパレータを介して渦巻状に巻回し、この巻回
物をステンレススチール３０５の電池缶材質の缶であ
り、上端部内径１５．８ｍｍ、缶底部内径１５．８ｍ
ｍ、缶側厚０．１５ｍｍ、缶底厚０．４１ｍｍ、高さ５
０ｍｍ、缶外径１５．９５ｍｍの円筒型缶に挿入し、負
極リードタブを缶壁に、正極リードタブを正極端子にそ
れぞれ溶接した後、電解質溶液としてＬｉＢＦ4 １モル
のプロピレンカーボネート、エチレンカーボネート、γ
−ブチロラクトンの３成分混合溶液４ｇを真空含浸し、
封口する。The thickness of the active material, carboxymethyl cellulose as a binder, and styrene-butadiene rubber is 265 μm on each side. The positive electrode and the negative electrode were sized to a width of 40.8 mm, provided with a lead tab, and then spirally wound through a polyethylene microporous membrane separator having a thickness of 33 μm and a width of 44 mm, and the wound product was made of stainless steel 305. This is a can made of the battery can material, the inner diameter of the upper end is 15.8 mm, the inner diameter of the can bottom is 15.8 m.
m, can side thickness 0.15 mm, can bottom thickness 0.41 mm, height 5
0 mm, was inserted into a cylindrical can of Kangai径15.95 mm, the negative electrode lead tab to the can wall, after welded a positive electrode lead tab to the positive terminal, LiBF 4 1 mole of propylene carbonate as an electrolyte solution, ethylene carbonate, gamma
Vacuum impregnation of 4 g of a three-component mixed solution of butyrolactone,
Seal.
【００２２】該電池は、０．６アンペアの定電流充電
し、電圧が４．２Ｖに達した後、４．２Ｖ定電圧下にお
いて５時間充電を続け、１時間後に０．３アンペアの定
電流放電を２．７Ｖまで行う。この充放電サイクルを２
回繰返し、第３回目の放電容量を測定し、その結果を表
１に示す。The battery was charged with a constant current of 0.6 amperes, and after reaching a voltage of 4.2 V, continued to be charged for 5 hours under a constant voltage of 4.2 V, and one hour later, with a constant current of 0.3 amperes. Discharge to 2.7V. This charge / discharge cycle is 2
Repeated three times, the discharge capacity at the third time was measured, and the results are shown in Table 1.
【００２３】[0023]
【比較例１】実施例１と同じ巻回物をステンレススチー
ル３０５の電池缶材質の缶であり、缶上端部内径１５．
８ｍｍ、缶底部内径１５．８ｍｍ、缶側厚０．１５ｍ
ｍ、缶底厚０．１６ｍｍの高さ５０ｍｍ、缶外径１５．
９５ｍｍの円筒型缶に挿入し、実施例１と同様に両極リ
ードタブを溶接し、実施例１と同一の電解液４ｇを真空
含浸し、封口する。該電池を実施例１と同一条件で測定
し、その結果を表１に示す。[Comparative Example 1] The same wound material as in Example 1 was used as a can made of a stainless steel 305 battery can, and the inner diameter of the upper end of the can was 15.
8 mm, can bottom inner diameter 15.8 mm, can side thickness 0.15 m
m, can bottom thickness 0.16 mm, height 50 mm, can outer diameter 15.
It is inserted into a 95 mm cylindrical can, the bipolar lead tabs are welded in the same manner as in Example 1, and 4 g of the same electrolytic solution as in Example 1 is vacuum impregnated and sealed. The battery was measured under the same conditions as in Example 1, and the results are shown in Table 1.
【００２４】[0024]
【比較例２】実施例１と同じ巻回物をニッケルメッキ鋼
板の電池缶材質の缶であり、缶側厚０．１５ｍｍ、缶底
厚０．４ｍｍ、缶上端部内径１５．８ｍｍ、高さ５０ｍ
ｍ、缶外径１５．９５ｍｍの円筒型缶に挿入し、実施例
１と同一の操作を行い、電池とする。該電池を実施例１
と同一の条件下に測定し、その結果を表１に示す。[Comparative Example 2] The same wound material as in Example 1 was used as a can made of a nickel-plated steel plate battery can material. 50m
m, and the can was inserted into a cylindrical can having an outer diameter of 15.95 mm, and the same operation as in Example 1 was performed to obtain a battery. Example 1
The measurement was carried out under the same conditions as above, and the results are shown in Table 1.
【００２５】[0025]
【比較例３】ステンレススチール３０５の電池缶材質の
缶であり、缶側厚０．４ｍｍ、缶底厚０．４ｍｍ、缶上
端部内径１５．５ｍｍ、高さ５０ｍｍ、缶底部内径１
５．５５ｍｍの缶外径１５．９５ｍｍの円筒型缶に挿入
できるように、実施例１と同じ正極、負極、セパレータ
を用いて渦巻き状の巻回物を作る。この巻回物を該電池
缶に挿入し、以下実施例１と同様の操作を行い、電池と
し、実施例１と同一の条件下に測定しその結果を表１に
示す。[Comparative Example 3] A can made of a stainless steel 305 battery can, having a can side thickness of 0.4 mm, a can bottom thickness of 0.4 mm, a can upper end inner diameter of 15.5 mm, a height of 50 mm, and a can bottom inner diameter of 1.
A spiral wound product is prepared using the same positive electrode, negative electrode, and separator as in Example 1 so that the spiral wound product can be inserted into a 5.55 mm cylindrical can having an outer diameter of 15.95 mm. The wound product was inserted into the battery can, and the same operation as in Example 1 was performed to obtain a battery. Measurement was performed under the same conditions as in Example 1, and the results are shown in Table 1.
【００２６】落下衝撃テストを実施例１、比較例１、比
較例２、比較例３の各電池について行い、その結果を表
１に示す。テスト条件は、高さ１．２ｍからコンクリー
ト面に落下した後、実施例１に示す充放電サイクルを行
う。また、耐腐蝕性テストとして、実施例１、比較例
１、比較例２、比較例３の各電池を、実施例１に示す充
放電サイクルを行い、第３回目の放電容量を測定した
後、電池電圧０Ｖまで強制過放電を行う。０Ｖのまま１
ケ月間放置する。１ケ月経過後、電池缶に漏液がないか
調べる。その結果を表１に示す。A drop impact test was conducted on each of the batteries of Example 1, Comparative Example 1, Comparative Example 2 and Comparative Example 3, and the results are shown in Table 1. The test condition is that after dropping from a height of 1.2 m onto a concrete surface, the charging / discharging cycle shown in Example 1 is performed. As a corrosion resistance test, the batteries of Example 1, Comparative Example 1, Comparative Example 2, and Comparative Example 3 were subjected to the charge / discharge cycle shown in Example 1, and the third discharge capacity was measured. Forced over-discharge is performed until the battery voltage reaches 0V. 1 at 0V
Leave for a month. After 1 month, check the battery can for leaks. The results are shown in Table 1.
【００２７】[0027]
【表１】 [Table 1]
【００２８】[0028]
【発明の効果】本発明により、落下衝撃にも強く、容量
がより高くかつ耐腐蝕性のある非水系二次電池の高容量
電池を得ることができる。According to the present invention, it is possible to obtain a high-capacity non-aqueous secondary battery which is resistant to a drop impact, has a higher capacity, and has corrosion resistance.
Claims (1)
ープしかつ脱ドープし得る炭素質材料を用いた非水系二
次電池において、電池缶材料がステンレススチールであ
り、缶側厚が０．１０〜０．２０ｍｍ、缶底厚／缶側厚
の比が５．０〜１．７５であることを特徴とする、高容
量二次電池。1. A non-aqueous secondary battery using a carbonaceous material capable of doping and dedoping lithium ions as a negative electrode active material, wherein the battery can material is stainless steel, and the can-side thickness is 0.10 to 0.10. A high-capacity secondary battery having a can bottom thickness / can side thickness ratio of 0.20 mm and 5.0 to 1.75.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3255896A JPH0574423A (en) | 1991-09-09 | 1991-09-09 | High capacity battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3255896A JPH0574423A (en) | 1991-09-09 | 1991-09-09 | High capacity battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0574423A true JPH0574423A (en) | 1993-03-26 |
Family
ID=17285077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3255896A Withdrawn JPH0574423A (en) | 1991-09-09 | 1991-09-09 | High capacity battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0574423A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5804327A (en) * | 1995-05-05 | 1998-09-08 | Rayovac Corporation | Thin walled electrochemical cell |
| EP0871232A1 (en) * | 1997-04-10 | 1998-10-14 | VARTA Batterie Aktiengesellschaft | Lithium ion battery |
| JP2001283796A (en) * | 2000-04-04 | 2001-10-12 | Matsushita Electric Ind Co Ltd | Lithium secondary battery and its manufacturing method |
| JP2007042544A (en) * | 2005-08-05 | 2007-02-15 | Sanyo Electric Co Ltd | Lithium primary cell |
| JP2009212092A (en) * | 2000-08-30 | 2009-09-17 | Isao Matsumoto | Method of manufacturing paste type thin electrode for battery |
| WO2015198526A1 (en) * | 2014-06-26 | 2015-12-30 | パナソニックＩｐマネジメント株式会社 | Rolled-type battery |
| WO2023140142A1 (en) | 2022-01-21 | 2023-07-27 | パナソニックエナジー株式会社 | Cylindrical secondary battery |
-
1991
- 1991-09-09 JP JP3255896A patent/JPH0574423A/en not_active Withdrawn
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5804327A (en) * | 1995-05-05 | 1998-09-08 | Rayovac Corporation | Thin walled electrochemical cell |
| EP0871232A1 (en) * | 1997-04-10 | 1998-10-14 | VARTA Batterie Aktiengesellschaft | Lithium ion battery |
| JP2001283796A (en) * | 2000-04-04 | 2001-10-12 | Matsushita Electric Ind Co Ltd | Lithium secondary battery and its manufacturing method |
| JP2009212092A (en) * | 2000-08-30 | 2009-09-17 | Isao Matsumoto | Method of manufacturing paste type thin electrode for battery |
| JP2007042544A (en) * | 2005-08-05 | 2007-02-15 | Sanyo Electric Co Ltd | Lithium primary cell |
| WO2015198526A1 (en) * | 2014-06-26 | 2015-12-30 | パナソニックＩｐマネジメント株式会社 | Rolled-type battery |
| US10411243B2 (en) | 2014-06-26 | 2019-09-10 | Panasonic Intellectual Property Management Co., Ltd. | Rolled-type battery |
| US11183740B2 (en) | 2014-06-26 | 2021-11-23 | Panasonic Intellectual Property Management Co. | Rolled-type battery |
| WO2023140142A1 (en) | 2022-01-21 | 2023-07-27 | パナソニックエナジー株式会社 | Cylindrical secondary battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Application deemed to be withdrawn because no request for examination was validly filed |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19981203 |