JPH11176412A - Cap assembly of secondary battery - Google Patents
Cap assembly of secondary batteryInfo
- Publication number
- JPH11176412A JPH11176412A JP10115943A JP11594398A JPH11176412A JP H11176412 A JPH11176412 A JP H11176412A JP 10115943 A JP10115943 A JP 10115943A JP 11594398 A JP11594398 A JP 11594398A JP H11176412 A JPH11176412 A JP H11176412A
- Authority
- JP
- Japan
- Prior art keywords
- cap assembly
- vent
- safety valve
- cathode
- fastening means
- 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
- 239000003792 electrolyte Substances 0.000 claims description 17
- 238000004880 explosion Methods 0.000 abstract description 9
- 206010000117 Abnormal behaviour Diseases 0.000 abstract 1
- 229910001416 lithium ion Inorganic materials 0.000 description 7
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 6
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 239000012212 insulator Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000008151 electrolyte solution Substances 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 229910000733 Li alloy Inorganic materials 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 229910018095 Ni-MH Inorganic materials 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 229910018477 Ni—MH Inorganic materials 0.000 description 1
- 239000006183 anode active material Substances 0.000 description 1
- 239000006182 cathode active material Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- 229910021437 lithium-transition metal oxide Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910000652 nickel hydride Inorganic materials 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0431—Cells with wound or folded electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
-
- 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
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
- H01M50/578—Devices or arrangements for the interruption of current in response to pressure
-
- 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
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
- H01M50/627—Filling ports
- H01M50/636—Closing or sealing filling ports, e.g. using lids
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Gas Exhaust Devices For Batteries (AREA)
- Secondary Cells (AREA)
- Filling, Topping-Up Batteries (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は電池の非正常的な作
用のために内部の圧力が定まった圧力以上に上昇された
場合に作動され、電池の内圧を減少させて暴発を防止し
て安全性を保持することができる二次電池のキャップア
センブリに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is operated when the internal pressure of a battery rises above a predetermined pressure due to abnormal operation of the battery. The present invention relates to a cap assembly of a secondary battery capable of maintaining the performance.
【０００２】[0002]
【従来の技術】二次電池は再充電及び小型化もしくは大
容量化ができるものとして、代表的であるものはニッケ
ル水素(Ｎｉ−ＭＨ)電池とリチウム（Ｌｉ）及びリチウ
ムイオン（Ｌｉ−ｉｏｎ）電池が用いられている。2. Description of the Related Art As a secondary battery capable of being recharged and reduced in size or increased in capacity, a typical example is a nickel hydride (Ni-MH) battery and lithium (Li) and lithium ion (Li-ion). A battery is used.
【０００３】ここにリチウムイオン電池は陽極活物質で
リチウム−遷移金属酸化物が用いられ、陰極活物質でリ
チウム金属、リチウム合金、炭素もしくは炭素複合体が
用いられ、陽極と陰極の間にリチウムイオンが移動され
て起電力を発生させるので、充・放電になるようにす
る。Here, a lithium ion battery uses a lithium-transition metal oxide as an anode active material, a lithium metal, a lithium alloy, carbon or a carbon composite as a cathode active material, and a lithium ion battery between the anode and the cathode. Is moved to generate an electromotive force, so that charging and discharging are performed.
【０００４】図７は従来の公知されたリチウムイオン電
池の全体構造を現している。陽極及びセパレータ及び陰
極と共に巻装された電極ロール２は電解液と共に前記陰
極と接続されるカン４の内部に収納され、そのカン４の
上部には前記陽極と接続されるキャップアセンブリ６が
設けられて密封される。電極ロール２の上面と下面には
キャップアセンブリ６及びカン４との接触を防止するた
めに各々絶縁板８が設けられている。FIG. 7 shows the overall structure of a known lithium ion battery. The electrode roll 2 wound with the anode, the separator, and the cathode is housed inside the can 4 connected to the cathode together with the electrolytic solution, and a cap assembly 6 connected to the anode is provided above the can 4. And sealed. An insulating plate 8 is provided on each of the upper and lower surfaces of the electrode roll 2 to prevent contact with the cap assembly 6 and the can 4.
【０００５】キャップアセンブリ６はカン４の上部に溶
接される陰極部１０を備え、その中心に陽極部１２が設
けられ、陰極部１０と陽極部１２の間に絶縁板１４が設
けられた構造とからなる。陽極部１２は前記陽極にタッ
プ１６で繋がり、陰極部１０及び陽極部１２の中心に貫
挿したリベット１８により締付されている。さらに前記
リベット１８は絶縁板２０に介して陰極部１０と絶縁さ
れる。The cap assembly 6 has a structure in which a cathode portion 10 is welded to the upper portion of the can 4, an anode portion 12 is provided at the center thereof, and an insulating plate 14 is provided between the cathode portion 10 and the anode portion 12. Consists of The anode 12 is connected to the anode by a tap 16 and is fastened by a rivet 18 inserted through the center of the cathode 10 and the center of the anode 12. Further, the rivet 18 is insulated from the cathode section 10 via an insulating plate 20.
【０００６】このように構成されたリチウムイオン電池
は外部のショートのような過負荷とか電解液の電気分解
によるガス発生及び熱暴走現象などにより内圧が上昇さ
れる場合、爆発の危険があるので、キャップアセンブリ
６には防爆手段が設けられて安全を保持している。The lithium ion battery constructed as described above has a danger of explosion when the internal pressure is increased due to overload such as external short circuit, gas generation due to electrolysis of the electrolytic solution, and thermal runaway. The cap assembly 6 is provided with explosion-proof means to maintain safety.
【０００７】防爆手段の一例としてキャップアセンブリ
６の陰極部１０には所定の深さに環状の溝になる安全弁
２２が設けられている。このような安全弁２２は電池内
部の圧力が規定以上に上昇された場合、破裂されて内圧
を減少させるので、爆発を防止する。一方、キャップア
センブリ６の陰極部１０の一側には電解液注入口２４が
開けて、これは電解液の注入後、プラグ２６により密封
される。[0007] As an example of explosion-proof means, a safety valve 22 is provided on the cathode portion 10 of the cap assembly 6 at a predetermined depth to form an annular groove. When the pressure inside the battery rises more than a specified value, the safety valve 22 is ruptured to reduce the internal pressure, thereby preventing an explosion. On the other hand, an electrolyte injection port 24 is opened on one side of the cathode section 10 of the cap assembly 6, and is sealed by a plug 26 after the injection of the electrolyte.
【０００８】[0008]
【発明が解決しようとする課題】前記の従来技術のリチ
ウムイオン電池において、キャップアセンブリの防爆手
段、即ち安全弁は作動が不良であり、製造が難解な問題
点がある。例えば、前記溝が機械加工により形成される
場合にその溝の深さ及び形状は不均一になり、従って内
圧による破断の作動が不良になる。また、エッチングと
か電気鋳型法により設けられる場合には溝の深さ及び形
状が一定になるが、製造工程が複雑であり、費用が高く
なる問題点がある。In the above-mentioned prior art lithium ion battery, the explosion-proof means of the cap assembly, that is, the safety valve, has a problem in that the operation thereof is poor and the production is difficult. For example, if the groove is formed by machining, the depth and shape of the groove will be non-uniform, and the operation of the break due to internal pressure will be poor. Further, when the groove is provided by etching or an electric mold method, the depth and shape of the groove are constant, but there is a problem that the manufacturing process is complicated and the cost is high.
【０００９】[0009]
【課題を解決するための手段】このような従来技術の問
題点を解決するために、本発明は安全弁が規定圧力で作
動されるようにして電池の安全性を保持し、構造の簡単
化さらに安価で製造できるようにする二次電池のキャッ
プアセンブリを提供する。SUMMARY OF THE INVENTION In order to solve the problems of the prior art, the present invention maintains the safety of a battery by operating a safety valve at a specified pressure, and simplifies the structure. Provided is a cap assembly for a secondary battery that can be manufactured at low cost.
【００１０】これをために本発明は陰極部と陽極部の中
心に貫挿した締結手段の中心にベントを設けられ、その
ベントが安全弁により密封されるようにし、前記安全弁
の底部に電池の内圧が作用されるようにした構成にな
る。[0010] To this end, the present invention provides a vent at the center of the fastening means inserted through the center of the cathode part and the anode part, the vent is sealed by a safety valve, and the internal pressure of the battery is provided at the bottom of the safety valve. Is made to act.
【００１１】前記安全弁は電池内圧が規定圧の以上に上
昇された場合、その圧力に押されて開けるので電池の安
全性を保持する。また、前記安全弁は締結手段と一体に
形成されるので、キャップアセンブリの構造が簡単にな
るし、製造が容易になる。一方、本発明では締結手段の
中心に開けられたベントは電解液の注入口を兼ねること
ができる。この場合、キャップアセンブリの全体構造は
さらに単純になる。When the internal pressure of the battery rises above a specified pressure, the safety valve is pushed and opened by the pressure, thereby maintaining the safety of the battery. In addition, since the safety valve is formed integrally with the fastening means, the structure of the cap assembly is simplified, and the manufacturing is facilitated. On the other hand, in the present invention, a vent opened at the center of the fastening means can also serve as an electrolyte injection port. In this case, the overall structure of the cap assembly is further simplified.
【００１２】[0012]
【発明の実施の形態】以下、本発明の望ましい実施例を
添付図面に基づいてより詳しく説明する。また、本発明
の説明において、従来の技術で引用された図面と同様の
構成には説明の明瞭性のために同一符号を付けている。Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In the description of the present invention, the same components as those in the drawings cited in the prior art are denoted by the same reference numerals for clarity of description.
【００１３】実施例１ 図１及び図２に示した通り、本実施例の二次電池は内圧
の異常上昇による爆発を防止する安全装置として、安全
弁を備えた構成のキャップアセンブリ６０を有してい
る。 Embodiment 1 As shown in FIGS. 1 and 2, the secondary battery of this embodiment has a cap assembly 60 having a safety valve as a safety device for preventing an explosion due to an abnormal increase in internal pressure. I have.
【００１４】キャップアセンブリ６０は陽極とセパレー
タ及び陰極が共に巻装されたカン４の上部に結合され密
封される。カン４は陽極とセパレータ及び陰極が巻取さ
れた電極ロール２と電解液を共に収納するケースとし
て、後述するタップを介して前記陰極と接続される。電
極ロール２はキャップアセンブリ６０及びカン４との接
続を防止するために上面と下面に夫々絶縁板８を備えて
カン４の内部に設けられる。The cap assembly 60 is joined and sealed to the top of the can 4 on which the anode, separator and cathode are wound together. The can 4 is connected to the cathode via a tap, which will be described later, as a case for accommodating both the anode, the separator, the electrode roll 2 wound with the cathode, and the electrolyte. The electrode roll 2 is provided inside the can 4 with insulating plates 8 on the upper and lower surfaces, respectively, in order to prevent connection with the cap assembly 60 and the can 4.
【００１５】ここに本実施例のキャップアセンブリ６０
はカン４の上部に溶接される陰極部６２と、その陰極部
の中央に絶縁体６４を介して設けられる陽極部６６と、
前記陰極部６２と陽極部６６の中心を貫挿するリベット
６８とからなる。リベット６８は陰極部６２と陽極部６
６を結合させる締結手段で用いられるものであり、絶縁
体７０を介して陰極部６２と絶縁され、タップ７２を介
して電極ロール２の陽極と接続され、その陽極と陽極部
６６を導電させるターミナルになる。Here, the cap assembly 60 of the present embodiment is used.
A cathode 62 welded to the upper part of the can 4, an anode 66 provided at the center of the cathode via an insulator 64,
It comprises a cathode 62 and a rivet 68 inserted through the center of the anode 66. The rivet 68 includes the cathode 62 and the anode 6.
6, a terminal that is insulated from the cathode portion 62 via an insulator 70, is connected to the anode of the electrode roll 2 via a tap 72, and conducts the anode and the anode portion 66. become.
【００１６】このように構成された本実施例のキャップ
アセンブリ６０は爆発を防止するための安全装置とし
て、リベット６８の中心に内圧放出のためにベント７４
が開けられ、そのベント７４は安全弁７６により密封さ
れている。前記安全弁７６の底部には電池の内圧が常に
作用され、電池の内圧が規定圧以上に上昇される時、押
されて開放される。The cap assembly 60 according to the present embodiment, which is constructed as described above, is a safety device for preventing explosion.
Is opened, and the vent 74 is sealed by a safety valve 76. The internal pressure of the battery is constantly applied to the bottom of the safety valve 76, and when the internal pressure of the battery rises above a specified pressure, it is pushed and opened.
【００１７】リベット６８の中心に貫挿したベント７４
は上側の幅が狭まくなるテーパからなり、安全弁７６は
そのベント７４の下側から介して密封される。より詳し
くは前記ベント７４は円筒状からなり、安全弁７６はそ
のベント７４に挿入されて密封されるボールからなる。
この際、円筒状のベント７４を備えるリベット６８は柔
軟性があるアルミニウムで製造することが良い。また、
前記ボールは金属で製造する。A vent 74 inserted through the center of the rivet 68
Is formed by a taper having a narrow upper side, and the safety valve 76 is sealed from below the vent 74. More specifically, the vent 74 has a cylindrical shape, and the safety valve 76 has a ball inserted into the vent 74 and sealed.
At this time, the rivet 68 having the cylindrical vent 74 is preferably made of flexible aluminum. Also,
The ball is made of metal.
【００１８】このように構成された前記実施例の二次電
池は陰極部６２の一側に設けられた電解液注入口７８を
通じて電解液が注入された後、プラグ８０が押入され溶
接されることにより、密封される。In the secondary battery of the above-described embodiment, after the electrolyte is injected through the electrolyte injection port 78 provided on one side of the cathode portion 62, the plug 80 is pushed in and welded. Is sealed.
【００１９】前記安全弁７６は電池内圧が規定圧以上に
上昇される場合、その圧力を常に受けているボール、即
ち安全弁７６がベント７４を無理に通じて、外に押出さ
れ開けられるので、電池の内圧を低下させるようにな
る。従って、本実施例による二次電池は内圧の異常上昇
時にも爆発が防止され、構造的な安全性が保持される。When the internal pressure of the battery rises above a specified pressure, the safety valve 76 is pushed out of the battery, which is constantly receiving the pressure, that is, the safety valve 76 is forced out through the vent 74 and is opened. The internal pressure is reduced. Therefore, the secondary battery according to the present embodiment is prevented from explosion even when the internal pressure is abnormally increased, and the structural safety is maintained.
【００２０】また、本実施例のベント７４と安全弁７６
はリベット６８と一体に形成され、キャップアセンブリ
６０の全体構造を単純化することができ、容易に製造す
ることができる。Further, the vent 74 and the safety valve 76 of this embodiment
Is formed integrally with the rivet 68, so that the overall structure of the cap assembly 60 can be simplified and easily manufactured.
【００２１】実施例２ 図３及び図４に示した通り、本発明の第２実施例の二次
電池は内圧の異常上昇による爆発を防止する安全装置と
して、安全弁を備える構成のキャップアセンブリ６００
になる。 Embodiment 2 As shown in FIGS. 3 and 4, a secondary battery according to a second embodiment of the present invention is a cap assembly 600 having a safety valve as a safety device for preventing explosion due to an abnormal increase in internal pressure.
become.
【００２２】キャップアセンブリ６００は陽極とセパレ
ータ及び陰極が共に巻装されたカン４の上部に結合され
密封される。カン４は陽極とセパレータ及び陰極が巻取
された電極ロール２と電解液を共に収納するケースとし
て、後述するタップを介して前記陰極と接続される。電
極ロール２はキャップアセンブリ６００及びカン４との
接続を防止するために上面と下面に夫々絶縁板８を備え
てカン４の内部に収容される。The cap assembly 600 is joined and sealed to the top of the can 4 on which the anode, the separator and the cathode are wound together. The can 4 is connected to the cathode via a tap, which will be described later, as a case for accommodating both the anode, the separator, the electrode roll 2 wound with the cathode, and the electrolyte. The electrode roll 2 is housed inside the can 4 with insulating plates 8 on the upper and lower surfaces respectively to prevent connection with the cap assembly 600 and the can 4.
【００２３】ここに本実施例のキャップアセンブリ６０
０はカン４の上部に溶接される陰極部６０２と、その陰
極部の中央に絶縁体６０４を介して設けられる陽極部６
０６と、前記陰極部６０２と陽極部６０６の中心に貫挿
されるリベット６０８とからなる。リベット６０８は陰
極部６０２と陽極部６０６を結合させる締結手段で用い
られるものであり、絶縁体６１０を介して陰極部６０２
と絶縁され、タップ６１２を介して電極ロール２の陽極
と接続され、その陽極と陽極部６０６を導電させるター
ミナルになる。Here, the cap assembly 60 of this embodiment is used.
Reference numeral 0 denotes a cathode portion 602 welded to the upper portion of the can 4, and an anode portion 6 provided at the center of the cathode portion via an insulator 604.
And a rivet 608 inserted through the center of the cathode section 602 and the anode section 606. The rivet 608 is used as a fastening means for connecting the cathode section 602 and the anode section 606, and the rivet 608 is connected to the cathode section 602 via an insulator 610.
And is connected to the anode of the electrode roll 2 via the tap 612, and serves as a terminal for conducting the anode and the anode portion 606.
【００２４】このように構成された本実施例のキャップ
アセンブリ６００は爆発を防止するための安全装置とし
て、リベット６０８の中心に内圧放出のためにベント６
１４が開けられ、そのベント６１４は安全弁６１６によ
り密封される。前記安全弁６１６の底部には電池の内圧
が常に作用され、その内圧が規定圧以上に上昇される場
合、開放される。The cap assembly 600 according to the present embodiment, which is constructed as described above, is provided as a safety device for preventing explosion.
14 is opened and its vent 614 is sealed by a safety valve 616. The internal pressure of the battery is constantly applied to the bottom of the safety valve 616, and is opened when the internal pressure rises above a specified pressure.
【００２５】本実施例の安全弁６１６はベント６１４の
開口を密封するために前記リベット６０８の上面に付着
される板状蓋で構成される。蓋６１６はリベット６０８
の上面に熔接される。また、前記蓋６１６は図５に示し
た他の例のようにリベット６１８の上面に形成した凹部
６２０に係合した後で熔接できる。The safety valve 616 of the present embodiment comprises a plate-like lid attached to the upper surface of the rivet 608 to seal the opening of the vent 614. Lid 616 is rivet 608
Welded to the upper surface of the. Also, the lid 616 can be welded after engaging with the recess 620 formed on the upper surface of the rivet 618 as in the other example shown in FIG.
【００２６】この場合に、前記板状蓋６１６は規定の圧
力を決定するために柔軟性があるアルミニウムで製造す
ることがよい。また、図６に示した例のように蓋６２２
はその上面にクロス溝６２４が刻印されることもでき
る。In this case, the plate-like lid 616 is preferably made of flexible aluminum to determine a specified pressure. Also, as in the example shown in FIG.
A cross groove 624 may be engraved on the upper surface of the.
【００２７】このように構成された前記実施例の二次電
池は電解液注入口を兼ねるベント６１４を通じる電解液
の注入ができる。この際、前記安全弁６１６、６２２は
電解液の注入が終了した後に付着される。In the secondary battery of the above-described embodiment, the electrolyte can be injected through the vent 614 which also serves as the electrolyte injection port. At this time, the safety valves 616 and 622 are attached after the injection of the electrolyte is completed.
【００２８】以上の本実施例の構成により、前記安全弁
６１６、６２２は電池内圧が規定圧以上に上昇される場
合、その圧力を受けて破られることにより、電池の内圧
は低下されるようになる。従って、本実施例による二次
電池は内圧の異常上昇時にも爆発が防止され、構造的な
安全性が保持される。According to the configuration of the present embodiment, when the internal pressure of the battery is increased to a specified pressure or more, the safety valves 616 and 622 are broken by receiving the pressure, so that the internal pressure of the battery is reduced. . Therefore, the secondary battery according to the present embodiment is prevented from explosion even when the internal pressure is abnormally increased, and the structural safety is maintained.
【００２９】また、本実施例のベント６１４と安全弁６
１６、６２２はリベット６０８と一体に形成され、その
ベント６１４により電解液の注入が同時になるので、キ
ャップアセンブリ６００の全体構造をさらに単純化する
ことができ、製造も容易になる。Further, the vent 614 and the safety valve 6 of this embodiment
16 and 622 are formed integrally with the rivet 608, and the vent 614 simultaneously injects the electrolyte, so that the overall structure of the cap assembly 600 can be further simplified, and the manufacturing thereof is facilitated.
【００３０】[0030]
【発明の効果】以上の説明したように、本発明による二
次電池のキャップアセンブリは従来技術の問題点を根本
に解決している。即ち、本発明は陽極部と陰極部をアセ
ンブリするリベットの中心にベントを形成し、そのベン
トが安全弁により開放されるように構成するので、電池
の内圧が規定圧以上に上昇される場合、正確に開けられ
て電池の安全性が保持されることである。As described above, the cap assembly of the secondary battery according to the present invention basically solves the problems of the prior art. That is, the present invention forms a vent at the center of the rivet that assembles the anode and cathode parts, and the vent is opened by the safety valve. The safety of the battery is maintained.
【００３１】また、本発明はベントと安全弁をリベット
に一体に形成し、さらに前記ベントを通じて電解液の注
入ができるので、キャップアセンブリの全体構造を単純
化できる。Further, according to the present invention, the vent and the safety valve are formed integrally with the rivet, and the electrolyte can be injected through the vent, so that the entire structure of the cap assembly can be simplified.
【００３２】一方、本発明によると陰極部の周辺を幅広
く用いることができるので、絶縁体を配置するための空
間をさらに確保できるし、それに従って陰極部と陽極部
の短絡を効果的に防止し得る。On the other hand, according to the present invention, the periphery of the cathode portion can be widely used, so that a space for arranging the insulator can be further secured, and accordingly, a short circuit between the cathode portion and the anode portion can be effectively prevented. obtain.
【図１】本発明の第１実施例による二次電池のキャップ
アセンブリを示す分解斜視図である。FIG. 1 is an exploded perspective view illustrating a cap assembly of a secondary battery according to a first embodiment of the present invention.
【図２】本発明の第１実施例に関する二次電池の全体構
成を示す断面図である。FIG. 2 is a cross-sectional view showing the overall configuration of the secondary battery according to the first embodiment of the present invention.
【図３】本発明の第２実施例によるキャップアセンブリ
を示す分解斜視図である。FIG. 3 is an exploded perspective view illustrating a cap assembly according to a second embodiment of the present invention;
【図４】本発明の第２実施例に関する二次電池の全体構
成を示す断面図である。FIG. 4 is a cross-sectional view showing an overall configuration of a secondary battery according to a second embodiment of the present invention.
【図５】本発明の第２実施例に関する安全弁の他の例を
示す一部の断面図である。FIG. 5 is a partial sectional view showing another example of the safety valve according to the second embodiment of the present invention.
【図６】本発明の第２実施例に関連する安全弁の他の例
を示す平面図である。FIG. 6 is a plan view showing another example of the safety valve related to the second embodiment of the present invention.
【図７】従来の公知された二次電池のキャップアセンブ
リを示す断面図である。FIG. 7 is a cross-sectional view illustrating a cap assembly of a known secondary battery.
６０、６００；キャップアセンブリ ６２、６０２；陰極部 ６６、６０６；陽極部 ６８、６０８；リベット ７４、６１４；ベント ７６、６１６、６２２；安全弁 ７８；電解液注入口 ８０；プラグ ６２０；凹部 ６２４；クロス溝 60, 600; cap assembly 62, 602; cathode section 66, 606; anode section 68, 608; rivet 74, 614; vent 76, 616, 622; safety valve 78; electrolyte inlet 80; plug 620; recess 624; groove
Claims (12)
極に導電状に接したカンの開口に設けられた二次電池の
キャップアセンブリにおいて、前記カンと接合される陰
極部と、その陰極部に対して絶縁状に設けられた陽極部
と、前記陰極部と陽極部に貫挿されると共に前記陰極部
に対して絶縁されて、ベントを有した締結手段と、その
締結手段のベントに設けられた安全弁とからなって、前
記安全弁の底部に電池の内圧が作用されるようにした構
成を特徴とする二次電池のキャップアセンブリ。1. A cap assembly for a secondary battery provided at an opening of a can in conductive contact with a cathode wound with an anode and a separator, wherein a cathode portion joined to the can and a cathode portion are provided. An anode part provided in an insulated manner, a fastening means having a vent inserted through the cathode part and the anode part and insulated from the cathode part, and a safety valve provided at a vent of the fastening means A cap assembly for a secondary battery, wherein the internal pressure of the battery is applied to the bottom of the safety valve.
れる通路であることを特徴とする請求項１に記載の二次
電池のキャップアセンブリ。2. The cap assembly of claim 1, wherein the vent of the fastening unit is a passage through which an electrolyte is injected.
が設けられたことを特徴とする請求項１に記載の二次電
池のキャップアセンブリ。3. The cap assembly of claim 1, wherein the cathode has a passage through which an electrolyte is injected.
くほど幅が狭くなっていることを特徴とする請求項１に
記載の二次電池のキャップアセンブリ。4. The rechargeable battery cap assembly according to claim 1, wherein the width of the vent of the fastening means is reduced toward the upper side.
ボールからなることを特徴とする請求項１に記載の二次
電池のキャップアセンブリ。5. The cap assembly of claim 1, wherein the safety valve comprises a ball closed by a vent.
が形成されることを特徴とする請求項５に記載の二次電
池のキャップアセンブリ。6. The cap assembly of claim 5, wherein a passage through which an electrolyte is injected is formed in the cathode.
結手段の上面に結合されることを特徴とする請求項１に
記載の二次電池のキャップアセンブリ。7. The cap assembly of claim 1, wherein the safety valve is coupled to an upper surface of the fastening means to close the vent.
ング接合される板状蓋であることを特徴とする請求項７
に記載の二次電池のキャップアセンブリ。8. The safety valve according to claim 7, wherein the safety valve is a plate-shaped lid welded to an upper surface of the vent.
A cap assembly for a secondary battery according to claim 1.
係合されてウェルディング接合される板状蓋であること
を特徴とする請求項７に記載の二次電池のキャップアセ
ンブリ。9. The rechargeable battery cap assembly according to claim 7, wherein the safety valve is a plate-shaped lid which is engaged with a recess on the upper surface side of the fastening means and welded and joined.
とを特徴とする請求項８もしくは請求項９に記載の二次
電池のキャップアセンブリ。10. The cap assembly for a secondary battery according to claim 8, wherein a cross groove is formed in the plate-like lid.
された通路であることを特徴とする請求項７に記載の二
次電池のキャップアセンブリ。11. The cap assembly of claim 7, wherein the vent of the fastening means is a passage into which an electrolyte is injected.
た陽極と電気的に連結されるターミナルで用いられるこ
とを特徴とする請求項１に記載の二次電池のキャップア
センブリ。12. The cap assembly of claim 1, wherein the fastening means is used in a terminal electrically connected to an anode received inside the can.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019970062413A KR19990041759A (en) | 1997-11-24 | 1997-11-24 | Cap Assembly of Secondary Battery |
| KR1997/62413 | 1997-11-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11176412A true JPH11176412A (en) | 1999-07-02 |
Family
ID=19525470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10115943A Pending JPH11176412A (en) | 1997-11-24 | 1998-04-10 | Cap assembly of secondary battery |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH11176412A (en) |
| KR (1) | KR19990041759A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1233463A2 (en) * | 2001-02-16 | 2002-08-21 | Wilson Greatbatch Ltd. | Apparatus for releasing gases from rechargeable lithium electrochemical cells during the formation stage of manufacturing |
| WO2003065492A1 (en) * | 2002-01-31 | 2003-08-07 | Matsushita Electric Industrial Co., Ltd. | Battery and battery assembly |
| KR100436714B1 (en) * | 2002-10-29 | 2004-06-22 | 삼성에스디아이 주식회사 | Prismatic type lithium secondary battery |
| JP2005158267A (en) * | 2003-11-20 | 2005-06-16 | Nec Tokin Tochigi Ltd | Sealed type secondary battery |
| JP2005259355A (en) * | 2004-03-09 | 2005-09-22 | Sanyo Electric Co Ltd | Sealed secondary battery and supply method of electrolyte |
| CN100391032C (en) * | 2004-05-14 | 2008-05-28 | 北京东皋膜技术有限公司 | Aluminium-casing lithium ion cell core with antiexplosion film |
| US7851083B2 (en) * | 2004-11-18 | 2010-12-14 | Byd Company Limited | Lithium ion secondary batteries |
| JP2016171058A (en) * | 2015-03-13 | 2016-09-23 | 古河電池株式会社 | Sealed structure of liquid injection part for lithium ion battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100563034B1 (en) * | 1999-04-21 | 2006-03-24 | 삼성에스디아이 주식회사 | Cylindrical type second battery |
| KR100561307B1 (en) * | 2004-05-19 | 2006-03-15 | 삼성에스디아이 주식회사 | Secondary Battery |
| KR100614397B1 (en) * | 2004-10-28 | 2006-08-21 | 삼성에스디아이 주식회사 | Secondary battery |
| KR100658680B1 (en) * | 2005-04-08 | 2006-12-15 | 삼성에스디아이 주식회사 | Secondary battery and method for fabricating thereof |
| KR101422345B1 (en) | 2012-10-19 | 2014-07-22 | 한국생명공학연구원 | Dual structured cell culture dish |
| KR102601042B1 (en) * | 2021-09-10 | 2023-11-13 | 삼성에스디아이 주식회사 | Cylindrical secondary battery |
-
1997
- 1997-11-24 KR KR1019970062413A patent/KR19990041759A/en not_active Application Discontinuation
-
1998
- 1998-04-10 JP JP10115943A patent/JPH11176412A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1233463A2 (en) * | 2001-02-16 | 2002-08-21 | Wilson Greatbatch Ltd. | Apparatus for releasing gases from rechargeable lithium electrochemical cells during the formation stage of manufacturing |
| EP1233463A3 (en) * | 2001-02-16 | 2006-11-15 | Wilson Greatbatch Ltd. | Apparatus for releasing gases from rechargeable lithium electrochemical cells during the formation stage of manufacturing |
| WO2003065492A1 (en) * | 2002-01-31 | 2003-08-07 | Matsushita Electric Industrial Co., Ltd. | Battery and battery assembly |
| CN100391044C (en) * | 2002-01-31 | 2008-05-28 | 松下电器产业株式会社 | Battery and battery assembly |
| US7700231B2 (en) | 2002-01-31 | 2010-04-20 | Panasonic Corporation | Battery and battery assembly |
| KR100436714B1 (en) * | 2002-10-29 | 2004-06-22 | 삼성에스디아이 주식회사 | Prismatic type lithium secondary battery |
| JP2005158267A (en) * | 2003-11-20 | 2005-06-16 | Nec Tokin Tochigi Ltd | Sealed type secondary battery |
| JP2005259355A (en) * | 2004-03-09 | 2005-09-22 | Sanyo Electric Co Ltd | Sealed secondary battery and supply method of electrolyte |
| JP4565862B2 (en) * | 2004-03-09 | 2010-10-20 | 三洋電機株式会社 | Electrolyte supply method |
| CN100391032C (en) * | 2004-05-14 | 2008-05-28 | 北京东皋膜技术有限公司 | Aluminium-casing lithium ion cell core with antiexplosion film |
| US7851083B2 (en) * | 2004-11-18 | 2010-12-14 | Byd Company Limited | Lithium ion secondary batteries |
| JP2016171058A (en) * | 2015-03-13 | 2016-09-23 | 古河電池株式会社 | Sealed structure of liquid injection part for lithium ion battery |
Also Published As
| Publication number | Publication date |
|---|---|
| KR19990041759A (en) | 1999-06-15 |
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