JP2877492B2 - Sealed battery - Google Patents
Sealed batteryInfo
- Publication number
- JP2877492B2 JP2877492B2 JP2302962A JP30296290A JP2877492B2 JP 2877492 B2 JP2877492 B2 JP 2877492B2 JP 2302962 A JP2302962 A JP 2302962A JP 30296290 A JP30296290 A JP 30296290A JP 2877492 B2 JP2877492 B2 JP 2877492B2
- Authority
- JP
- Japan
- Prior art keywords
- battery
- battery container
- metal
- container
- dome
- 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)
- Gas Exhaust Devices For Batteries (AREA)
Description
【発明の詳細な説明】 （イ） 産業上の利用分野 本発明は、防爆装置を備えた密閉型電池の改善に関す
るものである。The present invention relates to an improvement in a sealed battery provided with an explosion-proof device.
（ロ） 従来の技術 従来、一次電池、二次電池を問わず電池内ガス圧の上
昇に基づく電池の破壊を防止するために、所定のガス圧
値で作動して電池内のガスを電池外に放出する安全弁装
置が設けられている。(B) Conventional technology Conventionally, in order to prevent the destruction of a battery due to an increase in the gas pressure inside the battery, regardless of whether the battery is a primary battery or a secondary battery, the gas inside the battery is operated at a predetermined gas pressure value to remove the gas inside the battery. Is provided with a safety valve device for discharging air to the vehicle.
そして、特開昭60−165040号公報では、電池外装部材
にガス抜き孔を設け、このガス抜き孔の周辺部に金属薄
板の周縁を溶着する方法が提案されている。Japanese Patent Application Laid-Open No. 60-165040 proposes a method in which a gas vent hole is provided in a battery exterior member, and the periphery of a thin metal plate is welded to the periphery of the gas vent hole.
しかしながら、上記方法において、電池外装部材と金
属薄板とを重ね合わして溶接する場合、二枚の金属板の
材厚に差があり、厚みが違うと溶接の熱伝導が大幅に異
なり、ピンホールやブローホールなどの溶接欠陥が発生
しやすい問題点があった。そのため、溶接の品質を維持
することは技術的に極めて困難である。However, in the above method, when the battery exterior member and the metal thin plate are overlapped and welded, there is a difference in the material thickness of the two metal plates. There was a problem that welding defects such as blowholes were likely to occur. Therefore, it is technically extremely difficult to maintain the quality of welding.
（ハ） 発明が解決しようとする課題 本発明は、電池容器（１）と、金属製リング（４）と
の間に、金属薄板（３）をはさみ込んで、金属製リング
（４）の周縁部を電池容器（１）に溶着することによ
り、上述の如き課題を解決するものである。(C) Problems to be Solved by the Invention The present invention provides a battery container (1) and a metal ring (4) with a thin metal plate (3) sandwiched between the battery container (1) and the metal ring (4). The above-mentioned problem is solved by welding the part to the battery container (1).
（ニ） 課題を解決するための手段 本発明の密閉型電池は、発電要素（２）を収納した電
池容器（１）の一部にガス抜き孔（５）を形設すると共
に、前記電池容器（１）の内圧が所定以上になったとき
に破断する金属薄板（３）を介して、前記電池容器
（１）の構成材と略同厚の金属製リング（４）の周縁部
を前記電池容器（１）に溶着して、前記ガス抜き孔
（５）と電池容器（１）の内部を隔離することを特徴と
したものである。(D) Means for Solving the Problems The sealed battery according to the present invention is characterized in that a gas vent hole (5) is formed in a part of a battery container (1) accommodating a power generation element (2), and the battery container is provided. The peripheral edge of a metal ring (4) having substantially the same thickness as the components of the battery container (1) is connected to the battery via a thin metal plate (3) that breaks when the internal pressure of (1) becomes higher than a predetermined value. It is characterized in that the gas vent hole (5) is isolated from the inside of the battery container (1) by welding to the container (1).
（ホ） 作用 溶接欠陥が発生する理由としては、溶接方法および溶
接条件の問題、さらに、部品精度上、部品材質および部
品の表面形状などの問題がある。(E) Action The reasons for the occurrence of welding defects include problems with the welding method and welding conditions, as well as problems with component accuracy, component material and component surface shape.
しかしながら、主な理由としては、電池容器と金属薄
板との材厚差が、大きいことが挙げられる。However, the main reason is that the material thickness difference between the battery container and the metal sheet is large.
本発明は、材厚差の大きい電池容器（１）と金属薄板
（３）とを溶接するときに、電池容器（１）とほぼ同厚
の金属製リング（４）と電池容器（１）により、金属薄
板（３）をはさみ込むことにより、溶接部分の総厚の中
心部に金属薄板（３）がくるため、金属薄板（３）と電
池容器（１）との溶接が不良になることを阻止できる。The present invention uses a metal ring (4) and a battery container (1) having substantially the same thickness as the battery container (1) when welding a battery container (1) having a large difference in material thickness and a thin metal plate (3). By inserting the metal sheet (3), the metal sheet (3) comes to the center of the total thickness of the welded portion, so that the welding between the metal sheet (3) and the battery case (1) becomes defective. Can be blocked.
なぜなら、抵抗溶接の場合、ナゲットの形成はその重
ね合わした総厚の中心部にできやすいからである。This is because, in the case of resistance welding, the formation of a nugget is likely to occur at the center of the total thickness of the nuggets.
（ヘ） 実施例 以下、本発明の実施例を図面に基ずいて説明する。(F) Examples Hereinafter, examples of the present invention will be described with reference to the drawings.
第１図は、本発明電池の断面図を示し、電池容器
（１）と、発電要素（２）と、厚み50μｍ〜100μｍの
金属薄板（３）と、金属製リング（４）と、電池蓋
（８）からなり、負極集電体（７）を電池蓋（８）に溶
接し、電池容器（１）と電池蓋（８）とはレーザー溶接
によって気密封口されている。FIG. 1 shows a cross-sectional view of a battery of the present invention, in which a battery container (1), a power generating element (2), a thin metal plate (3) having a thickness of 50 μm to 100 μm, a metal ring (4), and a battery lid The negative electrode current collector (7) is welded to the battery cover (8), and the battery case (1) and the battery cover (8) are hermetically sealed by laser welding.
また、第２図は、電池容器（１）の底部にガス抜き孔
（５）を設け、金属薄板（３）と、金属製リング（４）
とを、金属容器（１）の底部に有する環状突起（６）に
抵抗溶接し、気密封口する分解図を示し、ガス抜き孔
（５）と電池容器（１）の内部とを隔離することを示し
ている。FIG. 2 shows that a vent hole (5) is provided at the bottom of the battery container (1), and a thin metal plate (3) and a metal ring (4) are provided.
And FIG. 4 is an exploded view of resistance welding to an annular projection (6) provided at the bottom of the metal container (1) to seal the gas tight opening, and to isolate the vent hole (5) from the inside of the battery container (1). Is shown.
ここで、金属薄板（３）には、ステンレス鋼あるいは
SUS304、SUS304L、SUS316及びSUS316Lなどのオーステナ
イト系ステンレス鋼が使用され、その厚みは80μｍであ
る。Here, the metal sheet (3) is made of stainless steel or
Austenitic stainless steel such as SUS304, SUS304L, SUS316 and SUS316L is used, and its thickness is 80 μm.
一方、金属製リング（４）は、厚み250μｍのSUS304
系ステンレスを使用している。On the other hand, the metal ring (4) is made of SUS304 with a thickness of 250 μm.
Uses stainless steel.
さらに、電池容器（１）の厚みは、300μｍのSUS304
系ステンレスを使用している。Further, the thickness of the battery container (1) is 300 μm SUS304.
Uses stainless steel.
気密溶接が十分にできているか否かを調べるために、
ヘリウムリーク検査装置を使用して、気密製の確認を行
う。In order to check whether or not the hermetic welding is sufficient,
Use a helium leak inspection device to check for airtightness.
第１表に、本発明による電池と比較として金属製リン
グ（４）のない従来構造の電池とのヘリウムリーク検査
をそれぞれ500個ずつ行った結果を示す。Table 1 shows the results of 500 helium leak tests performed on a battery having a conventional structure without the metal ring (4), as a comparison with the battery according to the present invention.
第１表より、本発明電池は、全個数のヘリウムリーク
値が10-8atm・cc/sec以下で検出され、比較電池よりも
大幅に気密性が確保されている。 As shown in Table 1, the helium leak values of all the batteries of the present invention were detected at 10 −8 atm · cc / sec or less, and the airtightness of the batteries of the present invention was secured much more than that of the comparative battery.
以上より、本発明電池では、ピンホール、ブローホー
ルなどの溶接欠陥による漏液などもなくなる。As described above, in the battery of the present invention, liquid leakage due to welding defects such as pinholes and blowholes is also eliminated.
（ト） 発明の効果 本発明電池によれば、防爆装置を付設する際に、ピン
ホール、ブローホールなどを生じることがなく、漏液現
象を皆無とすることができ、気密性向上に効果があり、
その工業的価値は極めて大である。(G) Effects of the Invention According to the battery of the present invention, when an explosion-proof device is installed, pinholes, blowholes, and the like do not occur, the liquid leakage phenomenon can be eliminated, and the airtightness can be effectively improved. Yes,
Its industrial value is enormous.
第１図は本発明電池の断面図、第２図は本発明電池の主
構成部の分解図である。 （１）……電池容器、（２）……発電要素、（３）……
金属薄板、（４）……金属製リング、（５）……ガス抜
き孔、（６）……環状突起、（７）……負極集電体、
（８）……電池蓋。FIG. 1 is a sectional view of the battery of the present invention, and FIG. 2 is an exploded view of the main components of the battery of the present invention. (1) ... battery container, (2) ... power generation element, (3) ...
Metal thin plate, (4) metal ring, (5) gas vent hole, (6) annular protrusion, (7) negative electrode current collector,
(8) Battery cover.
Claims (2)
の一部にガス抜き孔（５）を形設すると共に、前記電池
容器（１）の内圧が所定以上になったときに破断する金
属薄板（３）を介して、前記電池容器（１）の構成材と
略同厚の金属製リング（４）の周縁部を、前記電池容器
（１）に溶着して、前記ガス抜き孔（５）と電池容器
（１）の内部を隔離することを特徴とした密閉型電池。1. A battery container (1) containing a power generating element (2).
A gas vent hole (5) is formed in a part of the battery case (1), and the battery case (1) is cut through a thin metal plate (3) which breaks when the internal pressure of the battery case (1) becomes higher than a predetermined value. A peripheral portion of a metal ring (4) having substantially the same thickness as a constituent material is welded to the battery container (1) to isolate the gas vent hole (5) from the inside of the battery container (1). Sealed battery.
し、前記ドーム部はその全周に刻み線を有し、前記電池
容器（１）の内圧が上昇したときに、前記ドーム部が押
圧されその一部が反転し、前記金属薄板（３）が刻み線
において破断することを特徴とした請求項記載の密閉
型電池。2. The metal thin plate (3) has a dome portion and a flange portion, and the dome portion has a score line all around the dome portion, and when the internal pressure of the battery container (1) rises, the dome portion has a score line. The sealed battery according to claim 1, characterized in that the dome part is pressed and part of the dome part is inverted, and the metal sheet (3) breaks at the score line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2302962A JP2877492B2 (en) | 1990-11-07 | 1990-11-07 | Sealed battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2302962A JP2877492B2 (en) | 1990-11-07 | 1990-11-07 | Sealed battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04174961A JPH04174961A (en) | 1992-06-23 |
| JP2877492B2 true JP2877492B2 (en) | 1999-03-31 |
Family
ID=17915250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2302962A Expired - Lifetime JP2877492B2 (en) | 1990-11-07 | 1990-11-07 | Sealed battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2877492B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002063886A (en) * | 2000-06-06 | 2002-02-28 | Fdk Corp | Safety valve for sealed battery |
-
1990
- 1990-11-07 JP JP2302962A patent/JP2877492B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04174961A (en) | 1992-06-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0573998B1 (en) | Sealed battery | |
| CA2240415C (en) | Explosion-proof seal plate for sealed type cell and production method thereof | |
| JP4009016B2 (en) | Square battery cap assembly | |
| JPH097557A (en) | Manufacture of angular sealed battery | |
| JP2877492B2 (en) | Sealed battery | |
| JPH04349347A (en) | Sealed battery | |
| JP3003511B2 (en) | Sealed battery | |
| JP3061457B2 (en) | Organic electrolyte battery | |
| JPH0644025Y2 (en) | Safety valve device for organic electrolyte battery | |
| JP2002175787A (en) | Battery and manufacturing method of the same | |
| JP2016110701A (en) | Manufacturing method of current interruption mechanism | |
| JPH05314956A (en) | Sealed battery | |
| JPH0350611Y2 (en) | ||
| JPH11260326A (en) | Sealed battery | |
| JPH04242069A (en) | Sealed type battery with safety valve | |
| JP2000149902A (en) | Secondary battery | |
| JPH1186821A (en) | Sealed-type battery | |
| JPH0559745U (en) | Sealed battery safety valve device | |
| JPH0714558U (en) | Square sealed battery | |
| JPH0625889Y2 (en) | Explosion-proof battery | |
| JPH0334049Y2 (en) | ||
| JPH1131490A (en) | Explosion-proof type sealed battery | |
| JPH07282787A (en) | Battery | |
| JP2000182589A (en) | Sealed-type battery and port sealing cover thereof | |
| JPH0424607Y2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090122 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100122 Year of fee payment: 11 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110122 Year of fee payment: 12 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110122 Year of fee payment: 12 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313113 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110122 Year of fee payment: 12 |
|
| R360 | Written notification for declining of transfer of rights |
Free format text: JAPANESE INTERMEDIATE CODE: R360 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110122 Year of fee payment: 12 |
|
| R370 | Written measure of declining of transfer procedure |
Free format text: JAPANESE INTERMEDIATE CODE: R370 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110122 Year of fee payment: 12 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313113 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110122 Year of fee payment: 12 |
|
| R360 | Written notification for declining of transfer of rights |
Free format text: JAPANESE INTERMEDIATE CODE: R360 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110122 Year of fee payment: 12 |
|
| R370 | Written measure of declining of transfer procedure |
Free format text: JAPANESE INTERMEDIATE CODE: R370 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313113 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110122 Year of fee payment: 12 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110122 Year of fee payment: 12 |
|
| EXPY | Cancellation because of completion of term |