JPS60205960A - Sealed battery - Google Patents
Sealed batteryInfo
- Publication number
- JPS60205960A JPS60205960A JP59062032A JP6203284A JPS60205960A JP S60205960 A JPS60205960 A JP S60205960A JP 59062032 A JP59062032 A JP 59062032A JP 6203284 A JP6203284 A JP 6203284A JP S60205960 A JPS60205960 A JP S60205960A
- Authority
- JP
- Japan
- Prior art keywords
- metal lid
- diaphragm
- storage
- sealed battery
- strain
- 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.)
- Pending
Links
- 229910052751 metal Inorganic materials 0.000 claims abstract description 22
- 239000002184 metal Substances 0.000 claims abstract description 22
- 239000011255 nonaqueous electrolyte Substances 0.000 claims description 3
- 239000011149 active material Substances 0.000 claims 1
- 239000011259 mixed solution Substances 0.000 claims 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 5
- 229910052744 lithium Inorganic materials 0.000 description 5
- 230000013011 mating Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
-
- 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)
Abstract
Description
【発明の詳細な説明】
本発明は電極群を収納した収納缶と中央部にハーメチッ
クシールさｎた出力端子を有する金属性蓋で完全に密閉
してなる一次または二次電池において、組立時、収納缶
に金属性蓋を挿入する際周囲から加わる応力や、′喧１
池取扱い時の熱または機械的応力、衝撃等からノ・−メ
チツクシール部を保護して高信頼性の完全密閉形電池を
提供しようとするものである。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a primary or secondary battery that is completely sealed with a storage can housing an electrode group and a metal lid having a hermetically sealed output terminal in the center. When inserting a metal lid into a storage can, stress applied from the surroundings and
The objective is to provide a highly reliable completely sealed battery by protecting the nozzle seal portion from heat, mechanical stress, impact, etc. during handling.
一般に非水溶液系の電解質を用いるリチウム電池におい
ては水分の混入を極度に嫌うため、完全密閉形にする必
要がある。第１図は従来構造のリチウム電池を示したも
ので、収納缶２には電極群１が収納されて、電極群１の
一方の電極と出力端子５Ｆｉ端子４によって接続さｎｌ
、他方の電極は図示していないが収納缶２と接続されて
いる。出力端子５は金属性蓋３とはハーメチックシール
６によって電気的に絶縁されている。７は電極群１と金
属性蓋３を絶縁する絶縁シートである。金属性蓋３はそ
の周辺部８の部分で図面上において上方へ折ｐ曲げらｎ
ていて、この金属性蓋３を収納缶２に押し込み、その合
せ部９をレーザ溶接や電子ビーム溶接などによって電池
は完全密閉化さｎている。この時、最も重要な点は合せ
部９において金属性蓋３の端部と収納缶２の端部がしっ
かりと密着していることであｐｌそのために／ｒｉ金属
性蓋３の外径より収納缶２の内径を若干小さくすること
になる。In general, lithium batteries that use a non-aqueous electrolyte are extremely sensitive to moisture contamination, so they must be completely sealed. FIG. 1 shows a lithium battery with a conventional structure, in which an electrode group 1 is housed in a storage can 2, and one electrode of the electrode group 1 is connected to an output terminal 5Fi terminal 4.
Although the other electrode is not shown, it is connected to the storage can 2. The output terminal 5 is electrically insulated from the metal lid 3 by a hermetic seal 6. 7 is an insulating sheet that insulates the electrode group 1 and the metal lid 3. The metal lid 3 is bent upward in the drawing at its peripheral portion 8.
The metal lid 3 is then pushed into the storage can 2, and the battery is completely sealed by laser welding, electron beam welding, etc. at the mating portion 9. At this time, the most important point is that the end of the metal lid 3 and the end of the storage can 2 are firmly in contact with each other at the mating part 9. Therefore, the outer diameter of the metal lid 3 is The inner diameter of the can 2 will be made slightly smaller.
しかし、このような状態で金属性蓋３を収納缶２に押し
込む七、金属性蓋３において半径方向で、外周から内側
に向って応力がかかる。この応力のかかり具合は部品の
加工精度や金属性蓋゛３を押［７込む際のゆがみ等によ
って、必ずしも一様ではなく、ハーメチックシールを破
損するか、セラミックまたはガラスと金属の接合部が剥
れる等の問題が生じた。However, when the metal lid 3 is pushed into the storage can 2 in this state, stress is applied to the metal lid 3 in the radial direction from the outer circumference toward the inside. The degree to which this stress is applied is not necessarily uniform, depending on the processing precision of the parts and distortion when pushing the metal lid 3, and may damage the hermetic seal or cause the joint between the ceramic or glass and metal to peel off. Problems such as being lost occurred.
本発明はと扛らの問題点を解決するもので、第２図に本
発明の一実施例を示した。電池の構成は第１図とほぼ同
じであるが、金属性蓋３Ｖｉいったんその周辺部で下方
へ折り曲げらｖｌ、その後上方へ折り返さ扛た形状をも
つダイヤフラム部１０を持っている。金属性蓋３はその
折り返（１１部の外周で収納缶２と接触するが、収納缶
２からの応力をダイヤフラノ・部１０で吸収することが
出来るので、ハーメチックシール６にかかる応力を軽減
できる。The present invention is intended to solve the problems of Toran et al., and an embodiment of the present invention is shown in FIG. The structure of the battery is almost the same as that shown in FIG. 1, but it has a diaphragm part 10 which is shaped like a metal lid 3Vi that is once bent downward at its periphery vl and then folded back upwards. The metal lid 3 contacts the storage can 2 at the outer periphery of its folded portion (11), but the stress from the storage can 2 can be absorbed by the diaphragm 10, reducing the stress applied to the hermetic seal 6. can.
第１表は本発明になる金属性蓋３を採用してリチウム電
、池を組立てた時の不良率を従来のリチウム電池の不良
率と比較したものである。従来、金属性蓋の押し込み時
発生したハーメチックシール部６の破損による不良率＃
１１．５％であったが、本発明になる金属性蓋３を用い
た結果０．５％Ｋまで低減でき、しかも金属性蓋３の外
径寸法の公差に余裕を持たせることができるので部品の
収率も向上させることができた。Table 1 compares the failure rate when lithium batteries and batteries are assembled using the metal lid 3 of the present invention with the failure rate of conventional lithium batteries. Conventionally, the defective rate # due to damage to the hermetic seal part 6 that occurred when pushing the metal lid
11.5%, but as a result of using the metal lid 3 of the present invention, it can be reduced to 0.5% K, and moreover, it is possible to provide a margin for the tolerance of the outer diameter dimension of the metal lid 3. The yield of parts was also improved.
第１表
以上述べたように本発明を採用した場合、その生産性が
向上することは明らかでち９、工業的価値は極めて大き
い。As mentioned above in Table 1, when the present invention is adopted, it is clear that the productivity is improved9, and the industrial value is extremely large.
第１図は従来構造のリチウム電池を示す要部断面図、第
２図は本発明の一実施例を示す要部断面図である。
１は電極群、２は収納缶、３Ｖｉ金属性蓋、４は端子、
５は出力端子、６はハーメチックシール、７Ｆｉ絶縁シ
ート、８は周辺部、９は合せ部、１０はダイヤスラム部
特許出願人
新神戸電機株式会社FIG. 1 is a sectional view of a main part showing a lithium battery having a conventional structure, and FIG. 2 is a sectional view of a main part showing an embodiment of the present invention. 1 is an electrode group, 2 is a storage can, 3Vi metal lid, 4 is a terminal,
5 is the output terminal, 6 is the hermetic seal, 7Fi insulation sheet, 8 is the peripheral part, 9 is the mating part, 10 is the diamond slam part Patent applicant Shin-Kobe Electric Co., Ltd.
Claims (1)
電解質または非水溶液電解質と非水溶液活物質の混合溶
液を金属性収納缶に収納し、中央部に・・−メチツクシ
ールさｎた出力端子を有する金属性蓋で完全密閉した密
閉形電池において、金属性蓋の周囲をダイヤフラム状に
したことを特徴とする密閉形電池。An electrode group consisting of a cathode, an anode, and a separator and a non-aqueous electrolyte or a mixed solution of a non-aqueous electrolyte and a non-aqueous active material are stored in a metal storage can, and the central part has an output terminal with a mesh seal. A sealed battery completely sealed with a lid, characterized by having a diaphragm-like shape around the metal lid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59062032A JPS60205960A (en) | 1984-03-29 | 1984-03-29 | Sealed battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59062032A JPS60205960A (en) | 1984-03-29 | 1984-03-29 | Sealed battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60205960A true JPS60205960A (en) | 1985-10-17 |
Family
ID=13188417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59062032A Pending JPS60205960A (en) | 1984-03-29 | 1984-03-29 | Sealed battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60205960A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5812707A (en) * | 1981-07-15 | 1983-01-24 | 河野 信義 | Method of coloring wood and bamboo in inlay form |
-
1984
- 1984-03-29 JP JP59062032A patent/JPS60205960A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5812707A (en) * | 1981-07-15 | 1983-01-24 | 河野 信義 | Method of coloring wood and bamboo in inlay form |
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