JP2653832B2 - Sealed battery - Google Patents
Sealed batteryInfo
- Publication number
- JP2653832B2 JP2653832B2 JP63138274A JP13827488A JP2653832B2 JP 2653832 B2 JP2653832 B2 JP 2653832B2 JP 63138274 A JP63138274 A JP 63138274A JP 13827488 A JP13827488 A JP 13827488A JP 2653832 B2 JP2653832 B2 JP 2653832B2
- Authority
- JP
- Japan
- Prior art keywords
- battery
- notch
- groove
- pressure
- branch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、防爆型の密閉電池に関する。更に詳しく
は、金属製電池缶の底板に切欠きを設けた防爆型密閉電
池に関する。The present invention relates to an explosion-proof sealed battery. More specifically, the present invention relates to an explosion-proof sealed battery in which a notch is provided in a bottom plate of a metal battery can.
［従来の技術］ 従来、密閉型電池においては、電池内圧力が電池缶あ
るいは電池封口部の限界耐圧以上になって爆発を引き起
さないように、あらかじめ特定の切込部を設け、切裂に
より、圧力を開放する提案が種々なされている。密封型
アルカリボタン電池に十字形の切込みを設け交点の肉厚
を制御する方法（実公昭58−17332号）、偏平形密閉電
池に関し、電池缶内の圧力が上昇した際の応力がもっと
も集中する部分の耐圧を他の部分に対し、相対的に下げ
る目的に切欠を設す方法（実開昭60−65970号）、電池
容器の底部に溝を形成するにあたり、底部に平坦部を有
し、底部中心に交点を持つ溝を形成する方法（特開昭63
−86244号，特開昭63−86246号）、電池容器の底部の内
面側に溝をつける方法（特開昭63−86245号）等があ
る。また、電池内ガス圧上昇時に作動する各種の過圧放
出安全弁も提案されている。特開昭62−90863号の如
く、正極にチリウム複合金属酸化物を用い、負極に特定
カーボン質を用い、過塩素酸リチウムを電解質とし、プ
ロピレンカーボネートを溶媒とする非水系二次電池の場
合には、通常使用時には全く圧力が電池缶内にかからな
い。両極活物質や電解質が水分，酸素と反応すると性能
が低下することから、安全弁は不適であり、電池容器を
ハーメチックシールにより封口し、完全密閉構造を採用
することが好ましい。しかし密閉性が高まり、貯蔵性に
優れる反面、高温加熱されたり、高電圧で充電される等
の異常環境下では、電池内部圧力が上昇し、電池が破裂
音を伴って破裂し、電池内容物が飛散して電池使用の本
体機器に損傷を与えるおそれがある。このハーメチック
シール封口の密閉電池にも切欠を施し、防爆機能を備え
る必要がある。[Prior art] Conventionally, in a sealed battery, a specific cut portion is provided in advance so as not to cause an explosion when the internal pressure of the battery becomes higher than a limit withstand pressure of a battery can or a battery sealing portion. There have been various proposals for releasing pressure. A method of controlling the thickness of the intersection by providing a cross-shaped cut in the sealed alkaline button battery (Japanese Utility Model Publication No. 58-17332). For flat sealed batteries, the stress is concentrated most when the pressure inside the battery can rises A method of forming a notch for the purpose of lowering the withstand pressure of one part relative to other parts (Japanese Utility Model Application Publication No. 60-65970). In forming a groove in the bottom of the battery container, the bottom has a flat part, Method of forming a groove having an intersection at the bottom center
-86244, JP-A-63-86246) and a method of forming a groove on the inner surface of the bottom of the battery container (JP-A-63-86245). Also, various overpressure release safety valves that operate when the gas pressure in the battery increases have been proposed. As in JP-A-62-90863, in the case of a non-aqueous secondary battery using a thylium composite metal oxide for the positive electrode, using a specific carbon material for the negative electrode, using lithium perchlorate as an electrolyte, and using propylene carbonate as a solvent, In normal use, no pressure is applied to the battery can during normal use. Since the performance deteriorates when the bipolar active material or the electrolyte reacts with moisture or oxygen, the safety valve is not suitable, and it is preferable to use a hermetic seal to close the battery container and to adopt a completely sealed structure. However, while the airtightness is improved and the storage property is excellent, under abnormal circumstances such as high temperature heating or high voltage charging, the internal pressure of the battery rises and the battery explodes with a popping sound, May scatter and damage the main unit using the battery. It is necessary to cut out the hermetically sealed battery to provide an explosion-proof function.
従来、防爆用の切欠を形成するにあたりプレス加工が
採用されているが、ステンレススチール缶の場合、溝部
が加工硬化を起こし、焼鈍しなければ、防爆機能の作動
圧力が安定しなかった。溝部を鈍利なＶ字状にすると切
裂しやすい利点があるが、加工のためのポンチの耐久性
が低い欠点を有する。溝部底部に0.1〜0.2mmRの丸みを
つける方法（実公昭58−26460号）もあるが、圧力上昇
に鋭敏に感応しにくくなる。Conventionally, press working has been employed to form notches for explosion proof, but in the case of stainless steel cans, work hardening occurs in the grooves, and the working pressure of the explosion proof function was not stable unless annealing was performed. If the groove is formed in a V-shape that is blunt, there is an advantage that the groove is easily torn, but there is a disadvantage that the durability of the punch for processing is low. There is also a method of rounding the groove bottom with 0.1 to 0.2 mmR (Japanese Utility Model Publication No. 58-26460), but it is difficult to respond sensitively to pressure rise.
［発明が解決すようとする課題］ 電池缶底部は、負極端子として機能する電池では、十
字状切込では正極表示とまぎらわしく不適当であり、ま
た応力の集中する部分に切欠を施すだけでは、通常時に
全く圧力のかからない電池では、安定した切裂開放圧力
が得られない。[Problem to be Solved by the Invention] In a battery that functions as a negative electrode terminal, the bottom of the battery can is confusingly inappropriate to the positive electrode display in a cross-shaped notch, and if only a notch is provided in a portion where stress is concentrated, A cell that does not normally receive any pressure at the time cannot obtain a stable tear opening pressure.
簡便であり、かつ経済性の高いプラス加工方法によっ
て、電池内圧の上昇に対応して安全性の確保される圧力
範囲で、所望の位置を切裂させ、しかも通常の使用時に
は、作動しないような切欠部を設けることが必要であ
る。With a simple and economical plus processing method, the desired position is cut off within the pressure range where safety is ensured in response to the increase in battery internal pressure, and it does not operate during normal use. It is necessary to provide notches.
本発明は、異常環境下での圧力上昇時に電池缶部に安
定した防爆機能を発揮させる切欠構造を有する密閉電池
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 a sealed battery having a cutout structure that allows a battery can to exhibit a stable explosion-proof function when the pressure increases in an abnormal environment.
［課題を解決するための手段］ 本発明は金属製電池缶の底板に切欠部を有する密封電
池において、底板の中心部を通る位置に底板の内外両面
から切欠かれた直線状の切欠溝が設けられ、切欠溝は内
面における溝幅が外面における溝幅より大きく、かつ直
線状切欠溝の両端部または両端部近傍から分岐したそれ
ぞれ少なくとも２本の分岐切欠溝が設けられていること
を特徴とする。Means for Solving the Problems According to the present invention, in a sealed battery having a notch in a bottom plate of a metal battery can, a linear notch groove cut out from both inside and outside surfaces of the bottom plate is provided at a position passing through the center of the bottom plate. The notch groove is characterized in that the groove width on the inner surface is larger than the groove width on the outer surface, and at least two branch notch grooves branching from both ends or near the both ends of the linear notch groove are provided. .
本発明においては、ステンレススチール，ニッケルメ
ッキ加工炭素鋼等の金属製電池缶の底板の両面に切欠部
を設ける。切欠部は、底板の中心を通る直線部分を有
し、直線部分の両端には、少なくとも二つの直線または
円弧の分岐部分があり、それらは直線部に対し対称に位
置し、その分岐先端は、それぞれ直線部に対し、120度
以上160度以内、好ましくは130度以上145度以内にあ
る。分岐先端は、缶周縁より少なくとも1mmは離れてい
る。In the present invention, notches are provided on both sides of the bottom plate of a metal battery can made of stainless steel, nickel-plated carbon steel, or the like. The notch has a straight portion passing through the center of the bottom plate, and at both ends of the straight portion there are at least two straight or circular branch portions, which are located symmetrically with respect to the straight portion, and whose branch tips are Each is 120 ° or more and 160 ° or less, preferably 130 ° or more and 145 ° or less with respect to the linear portion. The branch tip is at least 1 mm away from the periphery of the can.
また、分岐部分は、破線状であってもよく直線部分と
は必ずしも結節していなくても良い。両面に設けられた
切欠部断面は電池缶内側の切欠溝は缶外側の切欠溝に比
して浅く、かつ溝幅は広い。かかる切欠付与により、プ
レス加工の溝加工用ポンチの耐久性が、片面のみに切欠
をつける場合に比して著しく向上する。Further, the branch portion may be in the form of a broken line, and may not necessarily be connected to the straight line portion. In the cross section of the cutouts provided on both sides, the cutout groove inside the battery can is shallower and the groove width is wider than the cutout groove outside the can. By providing such a notch, the durability of the punch for groove processing in the press working is remarkably improved as compared with the case where the notch is formed only on one side.
缶外側の切欠溝の先端は、0.01〜0.04mmRの丸味を帯
びていても良い。The tip of the notch groove on the outside of the can may have a roundness of 0.01 to 0.04 mmR.
切欠部の肉厚を20μｍ〜50μｍの範囲で変えて、電池
缶内圧15〜45kg/cm2の圧力範囲の所望の作動圧力とす
る。The thickness of the notch is changed in the range of 20 μm to 50 μm to obtain a desired operating pressure in the pressure range of the battery can inner pressure of 15 to 45 kg / cm 2 .
［作 用］ 本発明により電池缶底部の中心付近で安定して切裂さ
せることができる。分岐の切欠きは、切欠部の圧力によ
る変形を切欠溝の直線部分中央に集中させる役割をはた
し、両面の切欠により再現よく中心部を切裂させる。特
に直線部の溝幅を、内面で広く、外面で狭くしてあるの
で、缶内の圧力上昇に際して、外面の切欠部のノッチ効
果によって、切裂が安定した行われる。[Operation] According to the present invention, it is possible to stably cut near the center of the bottom of the battery can. The cutout of the branch serves to concentrate the deformation due to the pressure of the cutout at the center of the straight portion of the cutout groove, and the center of the cutout is reproducibly reproduced by the cutouts on both sides. In particular, since the groove width of the straight portion is wide on the inner surface and narrow on the outer surface, when the pressure in the can rises, the notch effect of the cutout portion on the outer surface stably cuts.
［実施例］ つぎに実施例をあげて本発明を説明する。[Example] Next, the present invention will be described with reference to examples.
実施例１ ステンレススチール製の厚さ0.3mmの有底円筒缶の底
部にプレス加工により切欠部を形成した。第１図は、電
池内容物の記載を省いた電池容器全体の断面図を示す。
１は電池缶であり、２はガラス−メタルシール付電池封
口蓋である。電池缶１の厚さはやや誇張して示されてい
る。Example 1 A notch was formed by pressing in the bottom of a stainless steel bottomed cylindrical can having a thickness of 0.3 mm. FIG. 1 is a cross-sectional view of the entire battery container without describing the battery contents.
1 is a battery can, and 2 is a battery sealing lid with a glass-metal seal. The thickness of the battery can 1 is shown somewhat exaggerated.
第２図は電池缶１の底面図、すなわち電池缶の底板部
分を示す図である。図示されるように底板には直線部３
およびその両端部の対称な分岐部４からなる切欠溝が設
けられている。第２図におけるＸ−Ｘ′線断面の拡大図
を第３図に、Ｙ−Ｙ′線断面を第４図に示す。缶底直径
25mmに対し、直線部分の長さ7mm、分岐部分の一辺の長
さ6mmとした。FIG. 2 is a bottom view of the battery can 1, that is, a diagram showing a bottom plate portion of the battery can. As shown, the bottom plate has a straight section 3
And a notch groove composed of symmetrical branch portions 4 at both ends. FIG. 3 is an enlarged view of a section taken along line XX ′ in FIG. 2, and FIG. 4 is a section taken along line YY ′ of FIG. Can bottom diameter
For a length of 25 mm, the length of the straight portion was 7 mm, and the length of one side of the branch portion was 6 mm.
第３図の電池缶内側の切欠溝幅ａは0.78mm,電池缶外
側の切欠溝幅ｂは、0.37mmであった。こうして形成され
た薄肉部５の厚さｔは30μｍであった。第５図には、分
岐部４の基幹直線３に対する角度αを示し、その角度は
138度であった。空気圧により、内容物を未充填の電池
缶内に圧力をかけ、電池缶底部が切裂する圧力を求めた
ところ、10ケすべてが16kg/cm2−24kg/cm2の範囲に入
り、直線部３の中央部で切裂した。In FIG. 3, the width a of the cutout groove inside the battery can was 0.78 mm, and the width b of the cutout groove outside the battery can was 0.37 mm. The thickness t of the thin portion 5 thus formed was 30 μm. FIG. 5 shows an angle α of the branch portion 4 with respect to the main straight line 3, and the angle is
It was 138 degrees. Pneumatically pressured contents into unfilled battery in the can were determined pressure battery can bottom is Setsu裂, 10 Quai all fall within the scope of 16kg / cm 2 -24kg / cm 2 , linear portion 3 was torn at the center.
実施例２ ニッケルメッキ加工炭素鋼製の厚さ0.3mmの有底円筒
缶の底部にプレス加工により切欠部を形成した。第６図
に切欠部が設けられた電池缶底部を示す。本実施例にお
いては、切欠溝は直線部３と、対称な円弧状分岐部６を
有し、底板の内外両面から切欠きが施されている。缶底
直径15mmに対し、直線部分３の長さ5mm,分岐部分６の円
弧の先端と分岐基点との直線距離は3.0mmとした。電池
缶内側の切欠溝幅は、0.80mm,電池缶外側の切欠溝幅
は、0.36mmであった。薄肉部の厚さは、45μｍであっ
た。第７図に示す如く、分岐先端の基幹直線に対する角
度は132度であった。空気圧により、内容物を未充填の
電池缶内に圧力をかけ電池缶底部が切裂する圧力を求め
たところ、10ケすべてが17kg/cm2−27kg/cm2の範囲に入
り、基幹直線中央部で切裂した。Example 2 A notch was formed by pressing in the bottom of a 0.3 mm thick bottomed cylindrical can made of nickel-plated carbon steel. FIG. 6 shows a battery can bottom provided with a notch. In the present embodiment, the cutout groove has a straight portion 3 and a symmetrical arc-shaped branch portion 6, and cutouts are formed from both the inside and outside surfaces of the bottom plate. For the can bottom diameter of 15 mm, the length of the straight part 3 was 5 mm, and the straight distance between the tip of the arc of the branch part 6 and the base point of the branch was 3.0 mm. The notch groove width inside the battery can was 0.80 mm, and the notch groove width outside the battery can was 0.36 mm. The thickness of the thin portion was 45 μm. As shown in FIG. 7, the angle of the tip of the branch with respect to the main straight line was 132 degrees. Pneumatically, where the battery can bottom under pressure into the battery can not yet filled with contents were determined pressure to Setsu裂, 10 Quai all fall within the scope of 17kg / cm 2 -27kg / cm 2 , core straight central Cut at the part.
切裂が安定して行われるためには、分岐部の形状にか
かわらず分岐部が直線部に関して対称に設けられ、かつ
分岐部の先端と分岐点を結ぶ直線が直線部となす角度が
120度以上160度以内であることが好ましく、さらに130
度以上145度以内であることがより好ましい。この角度
が120度未満および160度を越えると、直線部中央におけ
る安定な切裂が生じない。In order for the tear to be performed stably, the branch part is provided symmetrically with respect to the straight part regardless of the shape of the branch part, and the angle between the straight line connecting the tip of the branch part and the branch point forms the straight part.
It is preferable that it is 120 degrees or more and 160 degrees or less, and further 130
It is more preferable that the temperature is not less than 145 degrees. If this angle is less than 120 degrees and more than 160 degrees, a stable tear at the center of the straight portion does not occur.
切欠による薄肉部の肉厚は、電池缶の材質および切裂
を生じさせるための設定圧力によって定められる。The thickness of the thin portion due to the notch is determined by the material of the battery can and the set pressure for causing the cut.
比較例１ ステンレススチール製の厚さ0.3mmの有底円筒缶の底
部に、プレス加工により切欠部を形成した。第８図に切
欠部が設けられた電池缶底部を示す。Ｘ−Ｘ′線断面の
拡大図を第９図に示す。Comparative Example 1 A notch was formed in the bottom of a stainless steel bottomed cylindrical can having a thickness of 0.3 mm by pressing. FIG. 8 shows a battery can bottom provided with a cutout. FIG. 9 is an enlarged view of a section taken along line XX ′.
缶底直径25mmに対し、直線部分の長さ7mm,分岐部分８
の一辺の長さ6mmとした。切欠は缶の外面からのみ設け
た。分岐先端の直線部７に対する角度は90度であった。For the bottom diameter of the can 25mm, the length of the straight part 7mm, the branch part 8
Length of one side was 6 mm. Notches were made only from the outside of the can. The angle of the branch tip with respect to the linear portion 7 was 90 degrees.
第９図の電池缶外側の切欠溝幅ｃは、0.37mmであっ
た。薄肉部９の厚さｔは30μｍであった。The width c of the cutout groove outside the battery can in FIG. 9 was 0.37 mm. The thickness t of the thin portion 9 was 30 μm.
空気圧により、内容物を未充填の電池缶内に圧力をか
け、電池缶底部が切裂する圧力を求めたところ、直線部
分で切裂したが、開裂位置は一定せず、切裂する圧力範
囲も12kg/cm2−35kg/cm2となり、安定しなかった。Pressure was applied to the battery can that had not been filled with the contents by air pressure, and the pressure at which the bottom of the battery can was torn was determined. Was 12 kg / cm 2 −35 kg / cm 2 , which was not stable.
切欠部を缶の内面にのみ設けた場合も切裂の情況は不
安定であった。When the notch was provided only on the inner surface of the can, the situation of the tear was unstable.
［発明の効果］ 以上、説明したように、本発明では、切欠溝の直線部
分の両面に切欠を有し、電池缶内側の切欠溝が缶外側の
切欠溝より大きくし、直線部分の両端に所定の角度の分
岐をつけることにより、所望の圧力で切裂することがで
きた。[Effects of the Invention] As described above, in the present invention, notches are provided on both sides of the straight portion of the notch groove, the notch groove inside the battery can is larger than the notch groove outside the can, and both ends of the straight portion are provided at both ends of the straight portion. By making a branch at a predetermined angle, it was possible to cut at a desired pressure.
第１図は本発明実施例の電池容器の断面図、 第２図は電池容器の底面図、 第３図および第４図はそれぞれ第２図のＸ−Ｘ′に沿っ
た拡大断面図およびＹ−Ｙ′線に沿った断面図、 第５図は分岐切欠溝と直線切欠溝の角度を示す平面図、 第６図は本発明の他の実施例の底面図、 第７図は分岐切欠溝と直線切欠溝の角度を示す平面図、 第８図は比較例の底面図、 第９図は第８図のＸ−Ｘ′線に沿った断面図である。 １……電池缶、 ２……ガラス−メタルシール付電池封口蓋、 ３……切欠溝、 ４……分岐切欠溝、 ５……薄肉部。1 is a sectional view of a battery container according to an embodiment of the present invention. FIG. 2 is a bottom view of the battery container. FIGS. 3 and 4 are enlarged sectional views taken along line XX 'of FIG. FIG. 5 is a plan view showing an angle between the branch cutout groove and the straight cutout groove, FIG. 6 is a bottom view of another embodiment of the present invention, and FIG. 7 is a branch cutout groove. FIG. 8 is a bottom view of the comparative example, and FIG. 9 is a cross-sectional view taken along line XX ′ of FIG. 1 ... Battery can, 2 ... Battery sealing lid with glass-metal seal, 3 ... Notch groove, 4 ... Branch notch groove, 5 ... Thin part.
Claims (1)
電池において、 前記底板の中心を通る位置に該底板の内外両面から切欠
かれた直線状の切欠溝が設けられ、該切欠溝は内面にお
ける溝幅が外面における溝幅より大きく、かつ該直線状
切欠溝の両端部または両端部近傍から分岐したそれぞれ
少なくとも２本の分岐切欠溝が設けられていることを特
徴とする密閉電池。1. A sealed battery having a notch in a bottom plate of a metal battery can, wherein a straight notch groove cut out from both inner and outer surfaces of the bottom plate is provided at a position passing through the center of the bottom plate. A sealed battery characterized in that a groove width on an inner surface is larger than a groove width on an outer surface, and at least two branch cutout grooves are provided, each branching off at or near both ends of the linear cutout groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63138274A JP2653832B2 (en) | 1988-06-07 | 1988-06-07 | Sealed battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63138274A JP2653832B2 (en) | 1988-06-07 | 1988-06-07 | Sealed battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01309252A JPH01309252A (en) | 1989-12-13 |
| JP2653832B2 true JP2653832B2 (en) | 1997-09-17 |
Family
ID=15218086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63138274A Expired - Lifetime JP2653832B2 (en) | 1988-06-07 | 1988-06-07 | Sealed battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2653832B2 (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3943063B2 (en) * | 2003-08-26 | 2007-07-11 | 東芝照明プレシジョン株式会社 | Sealing plate and sealed battery |
| JP2005071648A (en) * | 2003-08-28 | 2005-03-17 | Toshiba Battery Co Ltd | Sealed battery |
| JP4121130B2 (en) * | 2004-02-18 | 2008-07-23 | 日立マクセル株式会社 | Sealed battery |
| JP4757481B2 (en) * | 2004-11-26 | 2011-08-24 | Ｎｅｃエナジーデバイス株式会社 | Secondary battery |
| JP4934994B2 (en) * | 2005-06-01 | 2012-05-23 | 新神戸電機株式会社 | Sealed cylindrical secondary battery |
| JP5237341B2 (en) * | 2010-09-24 | 2013-07-17 | 日新製鋼株式会社 | Battery safety valve |
| JP5276685B2 (en) * | 2011-03-31 | 2013-08-28 | 日新製鋼株式会社 | Battery case lid manufacturing method |
| JP6013148B2 (en) * | 2012-11-21 | 2016-10-25 | 日立オートモティブシステムズ株式会社 | Electricity storage element |
| US10333121B2 (en) | 2013-03-25 | 2019-06-25 | Kabushiki Kaisha Toyota Jidoshokki | Electric storage device |
| JP6327069B2 (en) * | 2014-09-01 | 2018-05-23 | 株式会社豊田自動織機 | Power storage device |
| JP6688037B2 (en) * | 2015-10-28 | 2020-04-28 | ニチコン株式会社 | Sealing body and electrolytic capacitor |
| CN118104045A (en) | 2021-10-20 | 2024-05-28 | 松下新能源株式会社 | Cylindrical battery |
-
1988
- 1988-06-07 JP JP63138274A patent/JP2653832B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01309252A (en) | 1989-12-13 |
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