JP3196607B2 - Explosion-proof sealing plate for sealed batteries - Google Patents
Explosion-proof sealing plate for sealed batteriesInfo
- Publication number
- JP3196607B2 JP3196607B2 JP28276295A JP28276295A JP3196607B2 JP 3196607 B2 JP3196607 B2 JP 3196607B2 JP 28276295 A JP28276295 A JP 28276295A JP 28276295 A JP28276295 A JP 28276295A JP 3196607 B2 JP3196607 B2 JP 3196607B2
- Authority
- JP
- Japan
- Prior art keywords
- metal foil
- sealing plate
- outer diameter
- explosion
- thin portion
- 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 - Fee Related
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)
- Gas Exhaust Devices For Batteries (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、密閉型電池におけ
る防爆機構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 mechanism for a sealed battery.
【０００２】[0002]
【従来の技術】従来より密閉型電池で化学反応等にとも
なって発生するガスによる内部圧力上昇、過充電による
発火、爆発の危険性に対する防爆機構として種々の機構
が用いられてきている。そのような中で、特開平６−１
９６１５０号公報にあるような溶接部分を剥離すること
によって電流を遮断するという機構が知られている。2. Description of the Related Art Conventionally, various mechanisms have been used as an explosion-proof mechanism against an internal pressure rise due to a gas generated by a chemical reaction or the like in a sealed battery, a fire due to overcharge, and a risk of explosion. Under such circumstances, Japanese Patent Laid-Open No. 6-1
There is known a mechanism in which current is cut off by peeling a welded portion as disclosed in Japanese Patent No. 96150.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、このよ
うな封口板の第一の課題として電流遮断圧力のバラツキ
がありこれまでの方式では内部圧力の上昇によって電流
を遮断する際に溶接強度が大きく影響していた。そこで
電流を遮断する際に溶接強度の影響を受けない、より精
度の高い電流遮断方式が必要となってきた。[SUMMARY OF THE INVENTION However, the weld strength in cutting off an electric current by an increase of internal pressure in such a first problem of the sealing plate there is a variation of the current cut-off pressure previous scheme Had a significant effect. Therefore, there has been a need for a more accurate current interruption method that is not affected by welding strength when interrupting the current.
【０００４】また、第二の課題として、多くの封口板で
温度抵抗体が用いられており、電解液が温度抵抗体に付
着して内部抵抗が上昇し電池性能を著しく低下させると
いう問題も起きている。As a second problem, a temperature resistor is used in many sealing plates, and there is a problem that an electrolytic solution adheres to the temperature resistor to increase the internal resistance and significantly lower the battery performance. ing.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
の本発明の第一の技術手段は、破断強度の異なる２枚の
Ｏ型形状もしくはＣ型形状の薄肉部を中心部が同軸上と
なるように設けた金属箔を絶縁材料を介して２枚の金属
箔の薄肉部を同軸上に配置し、前記同軸上で電気的に接
続した構造を有し、かつ上部金属箔薄肉部の径Ａと下部
金属箔薄肉部の径Ｂとの関係がＡ≧Ｂとなるように構成
することによるもので、さらには上部金属箔に凹部を設
け、その凹部の反転強度よりも弱い強度で破断する薄肉
部を設けた下部金属箔とで構成したり、または、上部金
属箔に凹部を設け、バーリング形状の絶縁材料を介し、
同じく凹部を設けた下部金属箔とで構成することであ
る。A first technical means of the present invention for achieving the above object is to form two O-shaped or C-shaped thin portions having different breaking strengths such that the central portion is coaxial. A thin metal foil provided so that the thin portions of the two metal foils are coaxially arranged via an insulating material, and are electrically connected coaxially, and the diameter of the upper thin metal foil portion This is because the relationship between A and the diameter B of the thin portion of the lower metal foil is such that A ≧ B. Further, a concave portion is provided in the upper metal foil, and the lower portion is broken at a strength lower than the reversal strength of the concave portion. Or composed of a lower metal foil provided with a thin portion, or provided with a recess in the upper metal foil, via a burring-shaped insulating material,
Similarly, a lower metal foil provided with a concave portion.
【０００６】本発明の第二の技術手段は下部金属箔に通
気孔を設けないことである。A second technical means of the present invention is to provide no ventilation holes in the lower metal foil.
【０００７】[0007]
【発明の実施の形態】上記の第一の技術手段によって、
内部圧力の上昇によって電流を遮断する際に溶接強度の
影響を受けることなくより精度高く電流を遮断するとと
もに下部金属箔によって上部金属箔の通気孔を塞ぐこと
なく大量のガス発生時に確実に内部ガスを排気すること
ができ発火、爆発等の事故を防止することができる。DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the first technical means described above,
Internal reliably when a large amount of gas generation without blocking the vents Thus the upper metal foil to the lower metal foil with blocking the higher accuracy current without being affected by the weld strength in cutting off an electric current by an increase in the internal pressure Gas can be exhausted and accidents such as ignition and explosion can be prevented.
【０００８】また、上記の第二の技術手段によって、電
池内の電解液が温度抵抗体に浸透することを大幅に低減
でき内部抵抗の上昇を抑制できる。[0008] In addition, by the second technical means described above, the penetration of the electrolyte solution in the battery into the temperature resistor can be greatly reduced, and the rise in internal resistance can be suppressed.
【０００９】以下に、本発明の実施例について説明する
が、本発明は実施例１の封口板の形状に限定されるもの
ではなく、参考例１〜３の形状にも適用できる。[0009] The following is a description of examples of the present invention, the present invention is limited to the shape of the sealing plate of the actual Example 1 is rather than be applied to the shape of the reference example 1-3.
【００１０】[0010]
【実施例】（比較例） 厚さ０．１５ｍｍ、外径φ１２．７ｍｍのアルミニウム
製金属箔１の中央部に外径φ４．０ｍｍのＣ型形状の刻
印を用いて薄肉部１ａを設け、薄肉部を有さない厚さ
０．３ｍｍ、外径φ１３．５ｍｍでφ１．５ｍｍの通気
孔を４つ持つアルミニウム製金属箔２の中央部に外径φ
１．０ｍｍの突起部２ａを設けこの二枚の金属箔を絶縁
ガスケット３を介してアルミニウム製金属箔１の中央部
と突起部２ａを超音波溶接した。これをφ１．５ｍｍの
通気孔を４つ持つアルミ製金属ケース４の中に挿入し、
その上部に温度抵抗体５および、φ１．５ｍｍの通気孔
を４つ持つ金属製キャップ６をのせて、かしめて封口板
を得た。この封口板の断面図を（図１）に示す。EXAMPLE (Comparative Example) A thin portion 1a is provided at the center of an aluminum metal foil 1 having a thickness of 0.15 mm and an outer diameter of 12.7 mm using a C-shaped stamp having an outer diameter of 4.0 mm. The outer diameter φ is formed at the center of the aluminum metal foil 2 having four vent holes of 0.3 mm in thickness, 13.5 mm in outer diameter and 1.5 mm in diameter without a portion.
A projection 2a of 1.0 mm was provided, and the center of the aluminum metal foil 1 and the projection 2a were ultrasonically welded to the two metal foils via an insulating gasket 3. This is inserted into an aluminum metal case 4 having four φ1.5 mm ventilation holes,
A temperature resistor 5 and a metal cap 6 having four vent holes each having a diameter of 1.5 mm were placed on the upper part of the temperature resistor 5 and caulked to obtain a sealing plate. A cross-sectional view of this sealing plate is shown in FIG.
【００１１】（実施例１） 厚さ０．１０ｍｍ、外径φ１２．７ｍｍのアルミニウム
製金属箔７の中央部に外径φ４．０ｍｍのＣ型形状の刻
印を用いて薄肉部７ａを設け、厚さ０．１０ｍｍ、外径
φ１３．５ｍｍでφ１．５ｍｍの通気孔を４つ持つアル
ミニウム製金属箔８に外径φ２．５ｍｍのＯ型形状の刻
印を用いて薄肉部８ａを設けこの二枚の金属箔を絶縁ガ
スケット３を介してそれぞれの箔の中央部を溶接した。
ここで、下方の金属箔の薄肉部の破断強度は１０〜１３
ｋｇ／ｃｍ2であり、上方の金属箔の薄肉部の破断強度
は１８〜２４ｋｇ／ｃｍ2である。これをφ１．５ｍｍ
の通気孔を４つ持つアルミニウム製金属ケース４の中に
挿入し、その上部に温度抵抗体５および、φ１．５ｍｍ
の通気孔を４つ持つ金属製キャップ６をのせて、かしめ
て封口板を得た。この封口板の断面図を（図２）に示
す。(Embodiment 1 ) A thin portion 7a is provided at the center of an aluminum metal foil 7 having a thickness of 0.10 mm and an outer diameter of 12.7 mm by using a C-shaped stamp having an outer diameter of 4.0 mm. A thin-walled portion 8a is provided on an aluminum metal foil 8 having a diameter of 0.10 mm, an outer diameter of 13.5 mm, and four vent holes of 1.5 mm by using an O-shaped stamp having an outer diameter of 2.5 mm. The metal foil was welded through the insulating gasket 3 at the center of each foil.
Here, the breaking strength of the thin portion of the lower metal foil is 10 to 13
kg / cm 2 , and the breaking strength of the thin portion of the upper metal foil is 18 to 24 kg / cm 2 . This is φ1.5mm
The insert vent into four with aluminum metal casing 4, the temperature resistor 5 and thereon, 1.5 mm
Was placed on a metal cap 6 having four air holes, and caulked to obtain a sealing plate. A cross-sectional view of this sealing plate is shown in FIG.
【００１２】（参考例１） 厚さ０．１０ｍｍ、外径φ１２．７ｍｍのアルミニウム
製金属箔７の中央部に外径φ４．０ｍｍのＣ型形状の刻
印を用いて薄肉部７ａを設け、さらに中央部に段差０．
５ｍｍの凹部を設けて、厚さ０．１０ｍｍ、外径φ１
３．５ｍｍでφ１．５ｍｍの通気孔を４つ持つアルミニ
ウム製金属箔８に外径φ２．５ｍｍのＯ型形状の刻印を
用いて薄肉部８ａを設け、この二枚の金属箔を絶縁ガス
ケット３を介してそれぞれの箔の中央部を溶接した。こ
れをφ１．５ｍｍの通気孔を４つ持つアルミニウム製金
属ケース４の中に挿入し、その上部に温度抵抗体５およ
び、φ１．５ｍｍの通気孔を４つ持つ金属製キャップ６
をのせて、かしめて封口板を得た。この封口板の断面図
を（図３）に示す。 REFERENCE EXAMPLE 1 A thin portion 7a is provided at the center of an aluminum metal foil 7 having a thickness of 0.10 mm and an outer diameter of 12.7 mm using a C-shaped stamp having an outer diameter of 4.0 mm. No step at center.
Provide a recess of 5mm, thickness 0.10mm, outer diameter φ1
A thin-walled portion 8a is provided on an aluminum metal foil 8 having 3.5mm and four φ1.5mm ventilation holes by using an O-shaped engraving having an outer diameter of φ2.5mm. The central part of each foil was welded through . Insert the Re this <br/> into aluminum metal case 4 with four vents of 1.5 mm, the temperature resistor 5 and the top thereof, a metal with four vent holes of 1.5 mm Cap 6
And crimped to obtain a sealing plate. A cross-sectional view of this sealing plate is shown in FIG.
【００１３】（参考例２） 厚さ０．１０ｍｍ、外径φ１２．７ｍｍのアルミニウム
製金属箔７の中央部に外径φ４．０ｍｍのＣ型形状の刻
印を用いて薄肉部７ａを設け、さらに中央部に段差１．
２０ｍｍの凹部を設けて、厚さ０．１０ｍｍ、外径φ１
３．５ｍｍでφ１．５ｍｍの通気孔を４つ持つアルミニ
ウム製金属箔８に外径φ２．５ｍｍのＯ型形状の刻印を
用いて薄肉部８ａを設け、さらに中央部に段差０．７ｍ
ｍの凹部を設けてこの二枚の金属箔をバーリング形状を
有する絶縁ガスケット９を介してそれぞれの箔の中央部
を溶接した。これをφ１．５ｍｍの通気孔を４つ持つア
ルミニウム製金属ケース４の中に挿入し、その上部に温
度抵抗体５および、φ１．５ｍｍの通気孔を４つ持つ金
属製キャップ６をのせて、かしめて封口板を得た。この
封口板の断面図を（図４）に示す。 Reference Example 2 A thin portion 7a is provided at the center of an aluminum metal foil 7 having a thickness of 0.10 mm and an outer diameter of 12.7 mm using a C-shaped stamp having an outer diameter of 4.0 mm. Steps in the center 1.
Provide a 20mm recess , 0.10mm thickness, φ1 outer diameter
A thin-walled portion 8a is provided on an aluminum metal foil 8 having 3.5mm and four φ1.5mm ventilation holes by using an O-shaped engraving having an outer diameter of φ2.5mm, and a step of 0.7m at the center.
It was welded to a central portion of each foil a recess of m this two metal foils with an insulating gasket 9 having a burring shape. Insert the Re this in A <br/> Rumi um metal casing 4 having four vents of 1.5 mm, the temperature resistor 5 and the top thereof, a metal with four vent holes of 1.5 mm The cap 6 was placed and caulked to obtain a sealing plate. A cross-sectional view of this sealing plate is shown in FIG.
【００１４】（参考例３） 厚さ０．１０ｍｍ、外径φ１２．７ｍｍのアルミニウム
製金属箔７の中央部に外径φ４．０ｍｍのＣ型形状の刻
印を用いて薄肉部７ａを設け、さらに中央部に段差０．
５ｍｍの凹部を設けて、厚さ０．１０ｍｍ、外径φ１
３．５ｍｍで通気孔を持たないアルミニウム製金属箔１
０に外径φ２．５ｍｍのＯ型形状の刻印を用いて薄肉部
１０ａを設け、この二枚の金属箔を絶縁ガスケット３を
介してそれぞれの箔の中央部を溶接した。これをφ１．
５ｍｍの通気孔を４つ持つアルミニウム製金属ケース４
の中に挿入し、その上部に温度抵抗体５および、φ１．
５ｍｍの通気孔を４つ持つ金属製キャップ６をのせて、
かしめて封口板を得た。この封口板の断面図を（図５）
に示す。 REFERENCE EXAMPLE 3 A thin portion 7a is provided at the center of an aluminum metal foil 7 having a thickness of 0.10 mm and an outer diameter of 12.7 mm by using a C-shaped stamp having an outer diameter of 4.0 mm. No step at center.
Provide a recess of 5mm, thickness 0.10mm, outer diameter φ1
Aluminum metal foil 1 that does not have a vent at 3.5mm
A thin portion 10a was provided on O by using an O-shaped engraving having an outer diameter of φ2.5 mm, and the two metal foils were welded at the center of each foil via an insulating gasket 3 . This is the φ1.
Aluminum with four 5mm vents metallic case 4
, And a temperature resistor 5 and φ1.
Put the metal cap 6 with four 5mm ventilation holes,
A sealing plate was obtained by swaging. A cross-sectional view of this sealing plate (FIG. 5)
Shown in
【００１５】比較例、参考例１〜３および実施例１で得
た封口板を（図６）に示す評価装置を用いて、アルミニ
ウム製金属ケース４の底部より毎秒０．６ｋｇ／ｃｍ2
で昇圧しながら高圧空気を送り、金属製キャップ６との
間で電流が遮断される高圧空気の圧力を圧力センサーを
用いて測定した。The sealing plates obtained in Comparative Examples , Reference Examples 1 to 3 and Example 1 were aluminum-coated using the evaluation apparatus shown in FIG.
Per second from the bottom of the Um metallic casing 4 0.6 kg / cm 2
The pressure of the high-pressure air at which the current was interrupted between the metal cap 6 and the high-pressure air was measured using a pressure sensor.
【００１６】それぞれの結果を（表１）に示す。The results are shown in Table 1.
【００１７】[0017]
【表１】 [Table 1]
【００１８】比較例、参考例１〜３および実施例１で得
た封口板を用いて非水系電解液を用いるリチウム二次電
池にし、その電池を８５℃で３週間保管した後、常温で
それぞれの封口板の内部抵抗を測定した。Using the sealing plates obtained in Comparative Examples , Reference Examples 1 to 3 and Example 1 , lithium secondary batteries using a non-aqueous electrolyte were stored. The batteries were stored at 85 ° C. for 3 weeks and then at room temperature. Of the sealing plate was measured.
【００１９】それぞれの結果を（表２）に示す。The results are shown in Table 2.
【００２０】[0020]
【表２】 [Table 2]
【００２１】以上の結果から本発明の構造を有する封口
板は電流遮断する圧力のバラツキが低下することがわか
る。From the above results, it can be seen that the sealing plate having the structure of the present invention reduces the variation in the pressure for interrupting the current.
【００２２】また、参考例３に示す構造を有する封口板
は上記内容に加えて、内部抵抗の上昇も抑制できること
がわかる。Further, it can be seen that the sealing plate having the structure shown in Reference Example 3 can suppress an increase in internal resistance in addition to the above contents.
【００２３】[0023]
【発明の効果】以上のように本発明は発火等の事故をよ
り精度高く防止するために、電池内部圧力が上昇したと
き確実に電流を遮断できる封口板および、電解液の浸透
による抵抗上昇を抑制できる封口板を実現することがで
きる。As described above, according to the present invention, in order to prevent accidents such as ignition with higher accuracy, the sealing plate capable of reliably shutting off the current when the internal pressure of the battery rises, and the resistance increase due to the permeation of the electrolyte solution. A sealing plate that can be suppressed can be realized.
【図面の簡単な説明】[Brief description of the drawings]
【図１】比較例における封口板の断面図FIG. 1 is a sectional view of a sealing plate in a comparative example.
【図２】本発明の実施例１における封口板の断面図Section of the sealing plate diagram in Example 1 of the present invention; FIG
【図３】本発明の参考例１における封口板の断面図FIG. 3 is a cross-sectional view of a sealing plate according to a first embodiment of the present invention.
【図４】本発明の参考例２における封口板の断面図FIG. 4 is a cross-sectional view of a sealing plate according to a second embodiment of the present invention.
【図５】本発明の参考例３における封口板の断面図FIG. 5 is a cross-sectional view of a sealing plate according to a third embodiment of the present invention.
【図６】電流遮断圧力の簡易的な評価装置の概略図FIG. 6 is a schematic diagram of a simple evaluation device for current interrupting pressure.
１，２，７，８ アルミニウム製金属箔 １ａ，７ａ，８ａ 薄肉部 ２ａ 突起部 ３ 絶縁ガスケット ４ アルミニウム製金属ケース ５ 温度抵抗体 ６ 金属製キャップ ９ バーリング形状を有する絶縁ガスケット １０ 通気孔を有さないアルミニウム製金属箔 １０ａ 通気孔を有さない薄肉部 1,2,7,8 aluminum metal foil 1a, 7a, the 8a thin portion 2a protruding portion 3 insulating gasket 4 aluminum metal case 5 temperature resistor 6 insulating gasket 10 vents with a metal cap 9 burring shape thin portion having no aluminum metal foil 10a vents without
───────────────────────────────────────────────────── フロントページの続き (72)発明者 平川 靖 大阪府門真市大字門真1006番地 松下電 器産業株式会社内 (56)参考文献 特開 平７−105933（ＪＰ，Ａ) 特開 平７−230798（ＪＰ，Ａ) 特開 平８−306351（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) H01M 2/02 - 2/04 H01M 2/12 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Yasushi Hirakawa 1006 Kazuma Kadoma, Kadoma City, Osaka Inside Matsushita Electric Industrial Co., Ltd. (56) References JP-A-7-105933 (JP, A) JP-A-7- 230798 (JP, A) JP-A-8-306351 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) H01M 2/02-2/04 H01M 2/12
Claims (1)
箔を配していて、各金属箔にはＯ型形状もしくはＣ型形
状の薄肉部を中心部が同軸上となるように設け、前記同
軸上で上下の金属箔を電気的に接続しており、下方の金
属箔の薄肉部の破断強度は上方の金属箔の薄肉部の破断
強度より小さく、かつ上方の金属箔の薄肉部内に下方の
金属箔の薄肉部が位置した密閉型電池用防爆封口板。1. Two metal foils are vertically arranged via an insulating gasket, and each metal foil is provided with an O-shaped or C-shaped thin portion such that the central portion is coaxial. The upper and lower metal foils are electrically connected coaxially, and the breaking strength of the thin portion of the lower metal foil is smaller than the breaking strength of the thin portion of the upper metal foil, and within the thin portion of the upper metal foil. Explosion-proof sealing plate for sealed batteries where the thin part of the metal foil below is located.
Priority Applications (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28276295A JP3196607B2 (en) | 1995-10-31 | 1995-10-31 | Explosion-proof sealing plate for sealed batteries |
| CA002240415A CA2240415C (en) | 1995-10-31 | 1996-10-28 | Explosion-proof seal plate for sealed type cell and production method thereof |
| EP96935470A EP0859416B1 (en) | 1995-10-31 | 1996-10-28 | Explosion-proof seal plate for enclosed type cell and production method thereof |
| DE69634668T DE69634668T2 (en) | 1995-10-31 | 1996-10-28 | EXPLOSION-RESISTANT SEALING PLATE FOR HERMETIC CELL AND MANUFACTURING PROCESS |
| PCT/JP1996/003148 WO1997016859A1 (en) | 1995-10-31 | 1996-10-28 | Explosion-proof seal plate for enclosed type cell and production method thereof |
| DE69635250T DE69635250T2 (en) | 1995-10-31 | 1996-10-28 | Explosion-proof sealing plate for hermetic cell and manufacturing process |
| EP04010499A EP1458038B1 (en) | 1995-10-31 | 1996-10-28 | Explosion-proof seal plate for sealed type cell and production method thereof |
| KR1019980703115A KR100324863B1 (en) | 1995-10-31 | 1996-10-28 | Explosion-proof seal plate for enclosed type cell and production method thereof |
| US09/068,038 US6242126B1 (en) | 1995-10-31 | 1996-10-28 | Explosion-proof seal plate for enclosed type cell and production method thereof |
| CNB961976527A CN1144302C (en) | 1995-10-31 | 1996-10-28 | Explosion-proof seal plate for enclosed type cell and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28276295A JP3196607B2 (en) | 1995-10-31 | 1995-10-31 | Explosion-proof sealing plate for sealed batteries |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09129195A JPH09129195A (en) | 1997-05-16 |
| JP3196607B2 true JP3196607B2 (en) | 2001-08-06 |
Family
ID=17656746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28276295A Expired - Fee Related JP3196607B2 (en) | 1995-10-31 | 1995-10-31 | Explosion-proof sealing plate for sealed batteries |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3196607B2 (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3322566B2 (en) * | 1996-06-14 | 2002-09-09 | 松下電器産業株式会社 | Explosion-proof sealing plate for sealed batteries |
| JP3816637B2 (en) * | 1997-07-09 | 2006-08-30 | 松下電器産業株式会社 | Explosion-proof sealed battery |
| JP3830284B2 (en) * | 1998-10-15 | 2006-10-04 | 東洋鋼鈑株式会社 | Manufacturing method and equipment for sealed battery safety device |
| KR100381328B1 (en) * | 1999-12-28 | 2003-04-23 | 주식회사 엘지화학 | Li-ION BATTERY USING SIMPLIFIED SAFETY VENT |
| KR100389968B1 (en) * | 2001-07-23 | 2003-07-04 | 한국 파워셀 주식회사 | Lithium ion secondary battery |
| US8475958B2 (en) | 2005-01-06 | 2013-07-02 | Panasonic Corporation | Nickel hydrogen storage battery and method for manufacturing negative electrode thereof |
| JP4961113B2 (en) * | 2005-04-22 | 2012-06-27 | パナソニック株式会社 | Secondary battery |
| CN100423324C (en) * | 2006-09-04 | 2008-10-01 | 徐立球 | Explosion protection for batteries |
| JP2009110808A (en) * | 2007-10-30 | 2009-05-21 | Sanyo Electric Co Ltd | Sealed battery |
| US20130309529A1 (en) * | 2011-03-09 | 2013-11-21 | Panasonic Corporation | Cylindrical battery |
| CN110635072A (en) * | 2013-02-20 | 2019-12-31 | 力特电子(日本)有限责任公司 | Sealing body |
| CN105684192B (en) * | 2013-11-05 | 2019-04-26 | 三洋电机株式会社 | Enclosed-type battery seal body and enclosed-type battery |
| CN107431179B (en) | 2015-03-27 | 2021-04-06 | 三洋电机株式会社 | Cylindrical battery |
-
1995
- 1995-10-31 JP JP28276295A patent/JP3196607B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09129195A (en) | 1997-05-16 |
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