JPH1092397A - Explosion-proof battery can - Google Patents
Explosion-proof battery canInfo
- Publication number
- JPH1092397A JPH1092397A JP8247323A JP24732396A JPH1092397A JP H1092397 A JPH1092397 A JP H1092397A JP 8247323 A JP8247323 A JP 8247323A JP 24732396 A JP24732396 A JP 24732396A JP H1092397 A JPH1092397 A JP H1092397A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- thin thickness
- groove
- thin portion
- thin
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/342—Non-re-sealable arrangements
- H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
-
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、リチウム二次電池
等に用いられる防爆型電池缶に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an explosion-proof battery can used for a lithium secondary battery or the like.
【０００２】[0002]
【従来の技術】有機電解液を用いたリチウム電池、特に
リチウム二次電池においては、密閉型アルカリ二次電池
等と同様の高効率充放電特性を確保するために、その電
極の反応面積をできるだけ大きくする設計努力がなされ
ている。このような電池に対して異常電流負荷、異常加
熱、破壊的な衝撃等が加えられたとき、電池内で急激な
充放電反応もしくは化学反応による急激なガス発生が起
こり易く、電池が破裂する危険性が大きい。そのため防
爆安全機構が付加される。2. Description of the Related Art In a lithium battery using an organic electrolyte, particularly in a lithium secondary battery, the reaction area of the electrode is made as small as possible in order to secure the same high-efficiency charge / discharge characteristics as a sealed alkaline secondary battery or the like. Greater design efforts are being made. When an abnormal current load, abnormal heating, destructive impact, or the like is applied to such a battery, rapid gas generation due to a rapid charge / discharge reaction or chemical reaction in the battery easily occurs, and the battery may explode. Great nature. Therefore, an explosion-proof safety mechanism is added.
【０００３】防爆安全機構の一例は、電池缶の底面部に
溝を設けて薄肉部を形成し、電池内で急激なガス発生が
起こり内部の圧力が異常に高くなったとき、その薄肉部
が破断して高圧になったガスを逃がすことによって電池
の破裂を防ぎ安全性を確保するように構成されている。
従来このような薄肉部の平面形状には、実開昭５８−１
７３２２号公報が開示する＋形状のもの、特開平１−３
０９２５２号公報が開示する直線と曲線との組合せから
なるもの、特開平３−５５７５４号公報が開示する−形
状のもの、実開昭６０−６５９７０号公報や特開平６−
３３５４８号公報が開示する環状あるいは円弧状のもの
等がある。One example of an explosion-proof safety mechanism is to form a thin portion by providing a groove in the bottom of a battery can. When sudden gas generation occurs in the battery and the internal pressure becomes abnormally high, the thin portion becomes The battery is configured so as to prevent the battery from being ruptured and to ensure safety by letting out the gas which has been broken and has become a high pressure.
Conventionally, the flat shape of such a thin-walled portion has been
Japanese Patent Application Laid-Open No. Hei.
Japanese Unexamined Patent Application Publication No. 60-65970 and Japanese Unexamined Patent Application Publication No. H06-55970, which are composed of a combination of a straight line and a curve disclosed in Japanese Patent Application Laid-Open No.
There is an annular or arcuate shape disclosed in Japanese Patent No. 33548.
【０００４】上記従来例の薄肉部は、溝形成によるもの
であるため、環状のものを除き端部を有する。従来の電
池缶の一例を図５〜図７に示す。金属製電池缶１１の底
面部１３に円弧状の薄肉部１２を有する。図６のＢ−Ｂ
断面図を図７に示す。円弧溝の端部１４近傍の薄肉部１
２延長方向の断面形状は、図７に示すように、溝深さＨ
に相当する半径の曲面を設けて、溝加工時に端部に発生
する端部特有のストレスを緩和するようにしている。[0004] The thin portion of the prior art is formed by forming a groove, and therefore has an end except for an annular portion. One example of a conventional battery can is shown in FIGS. An arc-shaped thin portion 12 is provided on a bottom surface portion 13 of the metal battery can 11. BB in FIG.
A cross-sectional view is shown in FIG. Thin portion 1 near end 14 of arc groove
2 The cross-sectional shape in the extension direction has a groove depth H as shown in FIG.
Is provided so as to alleviate the stress peculiar to the edge generated at the edge during the groove processing.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、従来の
電池缶においては、前記端部特有のストレスの緩和が十
分でないため、製造工程で前記端部１４の破損が発生し
たり、薄肉部１２の破断圧力のバラツキが大きくなって
いた。このような破断圧力のバラツキの大きいものにつ
いて、電池缶の破断圧力を安全側である低い側に設計す
ると、電池組立時に薄肉部１２の端部１４近傍が破損し
て生産工程を中断させたり、組立後の製品落下テストに
おいて薄肉部１２の端部１４近傍が破損して当該製品ロ
ットが不合格となるということが問題であった。However, in the conventional battery can, since the stress peculiar to the end portion is not sufficiently relaxed, the end portion 14 is damaged in the manufacturing process or the thin portion 12 is broken. The variation in pressure was large. If the breaking pressure of the battery can is designed to be a low side which is a safe side with respect to such a large variation of the breaking pressure, the vicinity of the end portion 14 of the thin portion 12 is damaged at the time of assembling the battery, and the production process is interrupted. In the product drop test after assembly, there is a problem that the vicinity of the end portion 14 of the thin portion 12 is damaged and the product lot is rejected.
【０００６】本発明は、かかる問題を解決するため、薄
肉部の破断圧力のバラツキの少ない防爆型電池缶を提供
することを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to provide an explosion-proof battery can with less variation in the breaking pressure of a thin portion in order to solve such a problem.
【０００７】[0007]
【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、金属製電池缶の底面部に円弧状等の非環状
の溝を設けて薄肉部を形成した防爆型電池缶において、
前記薄肉部の端部は、前記薄肉部の延長方向に前記溝の
底面から前記底面部へ向かって肉厚を漸増する傾斜部を
有し、この傾斜部の前記薄肉部の延長方向の長さが前記
溝の深さの１．５〜６．０倍であることを特徴とする。In order to achieve the above object, the present invention provides an explosion-proof battery can in which a non-annular groove such as an arc is provided on the bottom of a metal battery can to form a thin portion.
The end of the thin portion has an inclined portion that gradually increases in thickness from the bottom surface of the groove toward the bottom portion in the extension direction of the thin portion, and the length of the inclined portion in the extension direction of the thin portion. Is 1.5 to 6.0 times the depth of the groove.
【０００８】本発明の防爆型電池缶によれば、薄肉部の
端部が、薄肉部の延長方向に溝の底面から電池缶の底面
部へ向かって肉厚を十分緩やかに漸増する傾斜部を有す
るため、この薄肉部の塑性加工時に発生する端部におけ
るストレスを十分小さくすることができるので、薄肉部
の破断圧力のバラツキを少なくすることができた。According to the explosion-proof battery can of the present invention, the end of the thin portion has an inclined portion whose thickness is gradually increased sufficiently gradually from the bottom of the groove toward the bottom of the battery can in the direction in which the thin portion extends. As a result, it is possible to sufficiently reduce the stress generated at the end portion during the plastic working of the thin portion, thereby reducing the variation in the breaking pressure of the thin portion.
【０００９】なお、傾斜部の前記長さが溝の深さの１．
５倍に満たないと、前記端部特有のストレスの緩和が十
分でないため、破断圧力のバラツキが大きくなり、好ま
しくない。又、傾斜部の前記長さが溝の深さの６．０倍
を越えると、傾斜部の前記長さが大きくなり過ぎて薄肉
部の十分な長さを確保できなくなるため、薄肉部が防爆
安全機構としての機能を果たせなくなり、好ましくな
い。[0009] The length of the inclined portion is 1.
If the ratio is less than 5 times, the stress peculiar to the end portion is not sufficiently reduced, so that the variation in the breaking pressure increases, which is not preferable. Further, if the length of the inclined portion exceeds 6.0 times the depth of the groove, the length of the inclined portion becomes too large to secure a sufficient length of the thin portion. The function as a safety mechanism cannot be performed, which is not preferable.
【００１０】[0010]
【発明の実施の形態】本発明の実施形態を図面に基づい
て説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings.
【００１１】本発明の第１の実施形態は、図１、図２に
示すように、外径１７ｍｍ、底面部３の肉厚０．４５ｍ
ｍの金属製電池缶１の底面部３に、金属製電池缶１の中
心軸を中心とした円弧状の溝を設け薄肉部２を形成し、
薄肉部２の溝の深さＨを０．４０ｍｍ（薄肉部２の肉厚
を０．０５ｍｍ）、前記溝の幅を０．５ｍｍ、直径を
７．５ｍｍ、円弧角度を２３０度とし、この薄肉部２の
両端部４、４夫々に、薄肉部２の延長方向に長さＬの傾
斜部５を設けて構成される。傾斜部５は、図３に示すよ
うに、薄肉部２の溝の底面８から金属製電池缶１の底面
部３に向かって肉厚を漸増するように形成されている。As shown in FIGS. 1 and 2, the first embodiment of the present invention has an outer diameter of 17 mm and a thickness of the bottom portion 3 of 0.45 m.
An arc-shaped groove centered on the central axis of the metal battery can 1 is formed on the bottom surface 3 of the metal battery can 1 to form a thin portion 2,
The depth H of the groove of the thin portion 2 is 0.40 mm (the thickness of the thin portion 2 is 0.05 mm), the width of the groove is 0.5 mm, the diameter is 7.5 mm, and the arc angle is 230 degrees. An inclined portion 5 having a length L is provided at both ends 4 and 4 of the portion 2 in the extending direction of the thin portion 2. As shown in FIG. 3, the inclined portion 5 is formed so as to gradually increase the thickness from the bottom surface 8 of the groove of the thin portion 2 toward the bottom portion 3 of the metal battery can 1.
【００１２】傾斜部の薄肉部の延長方向の長さＬと溝の
深さＨとの比αを、表１に示すように、１．４〜１０の
間で種々変化させて電池缶を試作して、夫々の前記比α
毎に１０個ずつ薄肉部２の破断圧力を測定し、その平均
値である平均破断圧力とバラツキである標準偏差とを求
めた。なお、前記比αが１０である電池缶のみ、薄肉部
２の円弧角度を１８０度として試作した。As shown in Table 1, the ratio α of the length L in the direction of extension of the thin portion of the inclined portion to the depth H of the groove is varied from 1.4 to 10 as shown in Table 1 to prototype a battery can. And the ratio α of each
The rupture pressure of the thin portion 2 was measured by 10 pieces every time, and the average rupture pressure, which was the average value, and the standard deviation, which was a variation, were determined. In addition, only the battery can having the ratio α of 10 was prototyped with the thin portion 2 having an arc angle of 180 degrees.
【００１３】[0013]
【表１】 [Table 1]
【００１４】その結果、表１に示すように、実施例１〜
５の前記比αが１．５〜６．０の電池缶における破断圧
力の標準偏差は０．５〜０．８ｋｇｆ／ｃｍ2 となり、
従来例１の１／４以下という極めてバラツキの少ないも
のとなった。又、本実施例１〜５の前記比αが１．５〜
６．０のものにおいては平均破壊圧力が前記比αに依存
せず同程度となっているので、設計上も好適である。As a result, as shown in Table 1, Examples 1 to
5, the standard deviation of the breaking pressure in the battery can having the ratio α of 1.5 to 6.0 is 0.5 to 0.8 kgf / cm 2 ,
The variation was extremely small, ie, 1/4 or less of the conventional example 1. The ratio α of Examples 1 to 5 is 1.5 to
In the case of 6.0, the average burst pressure is almost the same without depending on the ratio α, so that it is also suitable in design.
【００１５】比較例１の前記比αが１０のものでは、薄
肉部２の円弧長さが短いためと思われるが、平均破壊圧
力が高くなり、又破断圧力のバラツキも大きくなった。
比較例２、３の前記比αが夫々１．４、１．０のもの
は、端部特有のストレスの緩和が十分でないためと思わ
れるが、破断圧力のバラツキが大きくなった。In Comparative Example 1 where the ratio α was 10, the arc length of the thin portion 2 was thought to be short, but the average breaking pressure was high and the variation in breaking pressure was large.
In Comparative Examples 2 and 3 in which the ratio α was 1.4 and 1.0, respectively, it was thought that the relaxation of the stress peculiar to the end was not sufficient, but the variation in the breaking pressure was large.
【００１６】本発明の第２の実施形態は、図４に示すよ
うに、金属製電池缶１の底面部３に、＋形状の溝を設け
薄肉部６を形成し、薄肉部６の溝の深さＨを０．４０ｍ
ｍ（肉厚を０．０５ｍｍ）、前記溝の幅を０．５ｍｍ、
縦横両溝夫々の長さを１０ｍｍとし、この薄肉部６の両
端部７、７に前記長さＬの傾斜部５を設けて構成され
る。この両端部７、７及びその他の基本構成は上記第１
の実施形態のものと同様である。In the second embodiment of the present invention, as shown in FIG. 4, a + -shaped groove is provided in the bottom portion 3 of the metal battery can 1 to form a thin portion 6, and the groove of the thin portion 6 is formed. 0.40m depth H
m (the thickness is 0.05 mm), the width of the groove is 0.5 mm,
Each of the vertical and horizontal grooves has a length of 10 mm, and is formed by providing the inclined portion 5 having the length L at both ends 7 of the thin portion 6. The two end portions 7, 7 and other basic configurations are the same as those of the first embodiment.
This is the same as that of the embodiment.
【００１７】この第２の実施形態において、両端部７、
７の前記比αを、表２に示すように、１．４〜６．０の
間で種々変化させて電池缶を試作して、夫々の前記比α
毎に１０個ずつ薄肉部６の破断圧力を測定し、その平均
値である平均破断圧力とバラツキである標準偏差とを求
めた。In the second embodiment, both ends 7,
7 was varied from 1.4 to 6.0 as shown in Table 2 to prototype battery cans.
The breaking pressure of 10 thin portions 6 was measured every time, and the average breaking pressure, which is the average value, and the standard deviation, which was a variation, were determined.
【００１８】[0018]
【表２】 [Table 2]
【００１９】その結果、表２に示すように、実施例６〜
１０の前記比αが１．５〜６．０の電池缶における破断
圧力の標準偏差は１．１〜１．２ｋｇｆ／ｃｍ2 とな
り、従来例２の１／３以下というバラツキの少ないもの
となった。又、比較例４、５の前記比αが夫々１．４、
１．０のものでは、上記比較例２、３のものと同様に、
破断圧力のバラツキが大きくなった。As a result, as shown in Table 2, Examples 6 to
10, the standard deviation of the breaking pressure in the battery can with the ratio α of 1.5 to 6.0 is 1.1 to 1.2 kgf / cm 2 , which is less than 1/3 that of the conventional example 2. Was. The ratio α of Comparative Examples 4 and 5 was 1.4, respectively.
In the case of 1.0, similarly to those of Comparative Examples 2 and 3,
The variation in the breaking pressure became large.
【００２０】[0020]
【発明の効果】本発明の防爆型電池缶によれば、薄肉部
の端部が、薄肉部の延長方向に溝の底面から電池缶の底
面部へ向かって肉厚を十分緩やかに漸増する傾斜部を有
するため、この薄肉部の塑性加工時に発生する端部にお
けるストレスを十分小さくすることができるので、薄肉
部の破断圧力のバラツキを少なくすることができた。According to the explosion-proof battery can of the present invention, the end of the thin portion has a slope that gradually increases in thickness from the bottom of the groove toward the bottom of the battery can in the direction of extension of the thin portion. Because of the presence of the portion, the stress at the end portion generated at the time of plastic working of the thin portion can be sufficiently reduced, so that the variation in the breaking pressure of the thin portion can be reduced.
【図１】本発明の第１の実施形態を示す下方からの斜視
図。FIG. 1 is a perspective view from below showing a first embodiment of the present invention.
【図２】本発明の第１の実施形態を示す底面図。FIG. 2 is a bottom view showing the first embodiment of the present invention.
【図３】図１のＡ−Ａ断面の部分拡大図。FIG. 3 is a partially enlarged view of an AA cross section in FIG. 1;
【図４】本発明の第２の実施形態を示す底面図。FIG. 4 is a bottom view showing a second embodiment of the present invention.
【図５】従来例を示す下方からの斜視図。FIG. 5 is a perspective view from below showing a conventional example.
【図６】従来例を示す底面図。FIG. 6 is a bottom view showing a conventional example.
【図７】図６のＢ−Ｂ断面の部分拡大図。FIG. 7 is a partially enlarged view of a BB section in FIG. 6;
１ 金属製電池缶 ２、６ 薄肉部 ３ 底面部 ４、７ 端部 ５ 傾斜部 ８ 溝の底面 Ｈ 溝深さ Ｌ 傾斜部長さ α 傾斜部長さと溝深さとの比 Reference Signs List 1 metal battery can 2, 6 thin portion 3 bottom portion 4, 7 end portion 5 inclined portion 8 bottom surface of groove H groove depth L inclined portion length α ratio of inclined portion length to groove depth
フロントページの続き (72)発明者 飯田 守 大阪府門真市大字門真1006番地 松下電器 産業株式会社内Continued on the front page (72) Inventor Mamoru Iida 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.
Claims (2)
けて薄肉部を形成した防爆型電池缶において、前記薄肉
部の端部は、前記薄肉部の延長方向に前記溝の底面から
前記底面部へ向かって肉厚を漸増する傾斜部を有し、こ
の傾斜部の前記薄肉部の延長方向の長さが前記溝の深さ
の１．５〜６．０倍であることを特徴とする防爆型電池
缶。1. An explosion-proof battery can in which a non-annular groove is provided on a bottom surface of the metal battery can to form a thin portion, wherein an end of the thin portion has a bottom surface which extends in a direction in which the thin portion extends. From the bottom to the bottom part, the length of the inclined part in the extension direction of the thin part is 1.5 to 6.0 times the depth of the groove. Explosion-proof battery can.
爆型電池缶。2. The explosion-proof battery can according to claim 1, wherein the groove has an arc shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24732396A JP3392656B2 (en) | 1996-09-19 | 1996-09-19 | Explosion-proof battery can |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24732396A JP3392656B2 (en) | 1996-09-19 | 1996-09-19 | Explosion-proof battery can |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1092397A true JPH1092397A (en) | 1998-04-10 |
| JP3392656B2 JP3392656B2 (en) | 2003-03-31 |
Family
ID=17161697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24732396A Expired - Lifetime JP3392656B2 (en) | 1996-09-19 | 1996-09-19 | Explosion-proof battery can |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3392656B2 (en) |
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001045185A1 (en) * | 1999-12-17 | 2001-06-21 | Mitsubishi Denki Kabushiki Kaisha | Battery and portable device |
| WO2001061770A1 (en) * | 2000-02-18 | 2001-08-23 | Matsushita Electric Industrial Co., Ltd. | Safety mechanism for rectangular battery and method of manufacturing the same |
| JP2002523875A (en) * | 1998-08-21 | 2002-07-30 | エヴァレディー バッテリー カンパニー インコーポレイテッド | Electrochemical cell with collector electrically insulated from cover |
| WO2005055342A2 (en) * | 2003-01-03 | 2005-06-16 | The Gillette Company | Alkaline cell with flat housing |
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| US7094494B2 (en) | 2003-01-03 | 2006-08-22 | The Gillette Company | Alkaline cell with flat housing |
| US7195839B2 (en) | 2003-02-11 | 2007-03-27 | Eveready Battery Company, Inc. | Battery cell with improved pressure relief vent |
| JP2007080598A (en) * | 2005-09-13 | 2007-03-29 | Hitachi Maxell Ltd | Sealed square battery |
| US7435395B2 (en) | 2003-01-03 | 2008-10-14 | The Gillette Company | Alkaline cell with flat housing and nickel oxyhydroxide cathode |
| JP2008251438A (en) * | 2007-03-30 | 2008-10-16 | Sanyo Electric Co Ltd | Battery |
| JP2009507345A (en) * | 2005-09-02 | 2009-02-19 | エイ １２３ システムズ，インク． | Battery cell structure and assembly method thereof |
| CN100466336C (en) * | 2003-11-26 | 2009-03-04 | 吉莱特公司 | Alkaline cell with flat housing |
| US7771863B2 (en) | 2006-11-24 | 2010-08-10 | Hitachi Vehicle Energy, Ltd. | Cylindrical secondary battery |
| JP2011154957A (en) * | 2010-01-28 | 2011-08-11 | Fuji Hatsujo Kk | Sealing plate for battery, method and metal mold for manufacturing the same |
| EP2696387A1 (en) * | 2012-08-08 | 2014-02-12 | Samsung SDI Co., Ltd. | Lithium ion secondary battery |
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| WO2016203708A1 (en) * | 2015-06-16 | 2016-12-22 | ソニー株式会社 | Battery, battery can, battery pack, electronic instrument, electric car, power storage device and power system |
| WO2017043023A1 (en) * | 2015-09-09 | 2017-03-16 | ソニー株式会社 | Battery, battery can, battery pack, electronic device, electric vehicle, electricity storage device and electric power system |
| US10256444B2 (en) | 2014-07-15 | 2019-04-09 | Sanyo Electric Co., Ltd. | Electricity storage device |
| JP2021118321A (en) * | 2020-01-29 | 2021-08-10 | 株式会社アプトデイト | Capacitor case and manufacturing method of the same |
| WO2021200440A1 (en) * | 2020-03-31 | 2021-10-07 | 三洋電機株式会社 | Cylindrical battery |
| WO2022202692A1 (en) | 2021-03-25 | 2022-09-29 | 三洋電機株式会社 | Sealed battery |
-
1996
- 1996-09-19 JP JP24732396A patent/JP3392656B2/en not_active Expired - Lifetime
Cited By (37)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002523875A (en) * | 1998-08-21 | 2002-07-30 | エヴァレディー バッテリー カンパニー インコーポレイテッド | Electrochemical cell with collector electrically insulated from cover |
| JP4671506B2 (en) * | 1998-08-21 | 2011-04-20 | エバレデイ バツテリ カンパニー インコーポレーテツド | Electrochemical cell having a collector electrically isolated from the cover |
| US6805992B1 (en) | 1999-12-17 | 2004-10-19 | Mitsubishi Denki Kabushiki Kaisha | Battery and portable device |
| WO2001045185A1 (en) * | 1999-12-17 | 2001-06-21 | Mitsubishi Denki Kabushiki Kaisha | Battery and portable device |
| WO2001061770A1 (en) * | 2000-02-18 | 2001-08-23 | Matsushita Electric Industrial Co., Ltd. | Safety mechanism for rectangular battery and method of manufacturing the same |
| US6964690B2 (en) | 2000-02-18 | 2005-11-15 | Matsushita Electric Industrial Co., Ltd. | Safety mechanism for rectangular battery and method of manufacturing the same |
| US7435395B2 (en) | 2003-01-03 | 2008-10-14 | The Gillette Company | Alkaline cell with flat housing and nickel oxyhydroxide cathode |
| WO2005055342A2 (en) * | 2003-01-03 | 2005-06-16 | The Gillette Company | Alkaline cell with flat housing |
| WO2005055342A3 (en) * | 2003-01-03 | 2006-05-26 | Gillette Co | Alkaline cell with flat housing |
| US7094494B2 (en) | 2003-01-03 | 2006-08-22 | The Gillette Company | Alkaline cell with flat housing |
| US7491464B2 (en) | 2003-01-03 | 2009-02-17 | The Gillette Company | Alkaline cell with flat housing |
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| US7195839B2 (en) | 2003-02-11 | 2007-03-27 | Eveready Battery Company, Inc. | Battery cell with improved pressure relief vent |
| US8076015B2 (en) | 2003-02-11 | 2011-12-13 | Eveready Battery Company, Inc. | Battery cell with improved pressure relief vent |
| CN100466336C (en) * | 2003-11-26 | 2009-03-04 | 吉莱特公司 | Alkaline cell with flat housing |
| WO2005124894A1 (en) * | 2004-06-08 | 2005-12-29 | The Gillette Company | Alkaline cell with flat housing |
| JP2009507345A (en) * | 2005-09-02 | 2009-02-19 | エイ １２３ システムズ，インク． | Battery cell structure and assembly method thereof |
| JP2007080598A (en) * | 2005-09-13 | 2007-03-29 | Hitachi Maxell Ltd | Sealed square battery |
| US7771863B2 (en) | 2006-11-24 | 2010-08-10 | Hitachi Vehicle Energy, Ltd. | Cylindrical secondary battery |
| JP2008251438A (en) * | 2007-03-30 | 2008-10-16 | Sanyo Electric Co Ltd | Battery |
| JP2011154957A (en) * | 2010-01-28 | 2011-08-11 | Fuji Hatsujo Kk | Sealing plate for battery, method and metal mold for manufacturing the same |
| EP2696387A1 (en) * | 2012-08-08 | 2014-02-12 | Samsung SDI Co., Ltd. | Lithium ion secondary battery |
| CN103579535A (en) * | 2012-08-08 | 2014-02-12 | 三星Sdi株式会社 | Lithium ion secondary battery |
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| JP2014036014A (en) * | 2012-08-08 | 2014-02-24 | Samsung Sdi Co Ltd | Cylindrical lithium ion secondary battery |
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| US10256444B2 (en) | 2014-07-15 | 2019-04-09 | Sanyo Electric Co., Ltd. | Electricity storage device |
| WO2016203708A1 (en) * | 2015-06-16 | 2016-12-22 | ソニー株式会社 | Battery, battery can, battery pack, electronic instrument, electric car, power storage device and power system |
| JPWO2016203708A1 (en) * | 2015-06-16 | 2018-04-05 | 株式会社村田製作所 | Batteries, battery cans, battery packs, electronic devices, electric vehicles, power storage devices, and power systems |
| WO2017043023A1 (en) * | 2015-09-09 | 2017-03-16 | ソニー株式会社 | Battery, battery can, battery pack, electronic device, electric vehicle, electricity storage device and electric power system |
| CN107949927A (en) * | 2015-09-09 | 2018-04-20 | 株式会社村田制作所 | Battery, battery case, battery pack, electronic device, electric vehicle, electrical storage device and electric system |
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| US10790490B2 (en) | 2015-09-09 | 2020-09-29 | Murata Manufacturing Co., Ltd. | Battery, battery can, battery pack, electronic device, electric vehicle, electricity storage device, and electric power system |
| JP2021118321A (en) * | 2020-01-29 | 2021-08-10 | 株式会社アプトデイト | Capacitor case and manufacturing method of the same |
| WO2021200440A1 (en) * | 2020-03-31 | 2021-10-07 | 三洋電機株式会社 | Cylindrical battery |
| WO2022202692A1 (en) | 2021-03-25 | 2022-09-29 | 三洋電機株式会社 | Sealed battery |
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