JP2002110481A - Capacitor - Google Patents
CapacitorInfo
- Publication number
- JP2002110481A JP2002110481A JP2000300400A JP2000300400A JP2002110481A JP 2002110481 A JP2002110481 A JP 2002110481A JP 2000300400 A JP2000300400 A JP 2000300400A JP 2000300400 A JP2000300400 A JP 2000300400A JP 2002110481 A JP2002110481 A JP 2002110481A
- Authority
- JP
- Japan
- Prior art keywords
- sealing
- sealing plate
- capacitor
- cylindrical case
- capacitor element
- 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
Classifications
-
- 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
- Y02E60/13—Energy storage using capacitors
Landscapes
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電気二重層コンデ
ンサ等、封口構造に高い気密性が要求されるコンデンサ
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a capacitor, such as an electric double layer capacitor, which requires a high airtightness in a sealing structure.
【０００２】[0002]
【従来の技術】電解コンデンサ、電気二重層コンデンサ
等、高度な気密性が要求される封口構造について、実公
平６−２１２２２号等、各種の形態が存在している。2. Description of the Related Art There are various types of sealing structures, such as electrolytic capacitors and electric double layer capacitors, which require high airtightness, such as Japanese Utility Model Publication No. 6-22222.
【０００３】ところで、非水系の電解液を用いる電気二
重層コンデンサでは、電解液に７０ｐｐｍ程度の水分が
含まれても、その水分が活性炭電極の表面で反応し、ガ
ス発生の原因になる。発生したガスが外装ケースに充満
すると、安全弁を開弁させ、コンデンサの使用が不可能
となる。このため、電気二重層コンデンサでは水分をで
きる限り減少させており、製造時にコンデンサ素子の乾
燥を十分に行うのはそのためである。In an electric double layer capacitor using a non-aqueous electrolytic solution, even if the electrolytic solution contains about 70 ppm of water, the water reacts on the surface of the activated carbon electrode to cause gas generation. When the generated gas fills the outer case, the safety valve is opened and the use of the condenser becomes impossible. For this reason, in the electric double layer capacitor, the moisture is reduced as much as possible, which is why the capacitor element is sufficiently dried at the time of manufacturing.
【０００４】コンデンサ素子の乾燥処理は、コンデンサ
素子のタブを封口板のリベットに接続した状態で、高温
下に放置して行われている。コンデンサ素子単体での乾
燥処理は可能であるが、乾燥したコンデンサ素子のタブ
を封口板のリベットに接続する工程を開放雰囲気中で行
うと、この工程でコンデンサ素子が空気中から吸湿する
おそれがある。また、コンデンサ素子のタブと封口板の
リベットとの接続を密封空間雰囲気で乾燥状態を維持し
つつ行うことは可能であるが、そのような雰囲気形成に
は、大がかりな製造装置が必要になる。[0004] The drying process of the capacitor element is performed by leaving the tab of the capacitor element connected to the rivet of the sealing plate at a high temperature. Although it is possible to dry the capacitor element alone, if the step of connecting the dried capacitor element tab to the rivet of the sealing plate is performed in an open atmosphere, the capacitor element may absorb moisture from the air in this step. . Further, the connection between the tab of the capacitor element and the rivet of the sealing plate can be performed while maintaining a dry state in a sealed space atmosphere, but such an atmosphere formation requires a large-scale manufacturing apparatus.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、乾燥前
にコンデンサ素子のタブと封口板のリベットとを接続し
た場合には、乾燥工程で封口板とリベットとの密着性が
悪化するおそれがある。封口板とリベットの材質はそれ
ぞれ固有の熱膨張係数を有するので、乾燥工程で高温状
態に晒されると、熱膨張係数の違いにより、封口板とリ
ベットとの接触面において歪が生じるからである。この
歪が封口板とリベットとの密着性の悪化を惹起すること
になる。そして、封口板とリベットとの密着性の悪化
は、電気二重層コンデンサ内部の電解液の漏出の原因に
なる他、外部からケース内への水分侵入の原因にもな
り、電気二重層コンデンサの寿命特性悪化の原因にもな
る。However, if the tab of the capacitor element and the rivet of the sealing plate are connected before drying, the adhesion between the sealing plate and the rivet may be deteriorated in the drying process. This is because the material of the sealing plate and the material of the rivet each have a specific coefficient of thermal expansion. Therefore, if the material is exposed to a high temperature state in the drying step, a difference occurs in the coefficient of thermal expansion, so that the contact surface between the sealing plate and the rivet is distorted. This distortion causes deterioration of the adhesion between the sealing plate and the rivet. Deterioration of the adhesion between the sealing plate and the rivet causes not only leakage of the electrolyte solution inside the electric double layer capacitor but also intrusion of moisture from outside into the case, and the life of the electric double layer capacitor. It also causes deterioration of characteristics.
【０００６】そこで、本発明は、高度な気密性が要求さ
れる電気二重層コンデンサ等に適した封口構造を実現し
たコンデンサを提供することを課題とする。Accordingly, an object of the present invention is to provide a capacitor which realizes a sealing structure suitable for an electric double layer capacitor or the like which requires high airtightness.
【０００７】[0007]
【課題を解決するための手段】本発明のコンデンサは、
電気二重層コンデンサ素子等のコンデンサ素子（８）を
収容する筒状ケース部（２）、金属等の良導体からなる
封口板（６）、封口板自体からなる外部端子部（１
０）、封口板と筒状ケース部とを電気的に絶縁する絶縁
部材（絶縁リング２４）、封口板と筒状ケース部の開口
部との間を封止する封止部材（封止リング２６）を備
え、電気二重層コンデンサ等に適した高度な気密性を持
つ封口構造を実現している。According to the present invention, there is provided a capacitor comprising:
A cylindrical case part (2) for accommodating a capacitor element (8) such as an electric double-layer capacitor element; a sealing plate (6) made of a good conductor such as a metal;
0), an insulating member (insulating ring 24) for electrically insulating the sealing plate and the cylindrical case portion, and a sealing member (sealing ring 26) for sealing between the sealing plate and the opening of the cylindrical case portion. ) To realize a highly airtight sealing structure suitable for electric double layer capacitors and the like.
【０００８】請求項１に係る本発明のコンデンサは、電
気二重層コンデンサ素子等のコンデンサ素子（８）を収
容する筒状ケース部（２）と、金属等の良導体で形成さ
れるとともに、前記筒状ケース部の開口部を封口する封
口板（６）と、この封口板自体で形成され、前記コンデ
ンサ素子に電気的に接続される外部端子部（１０）と、
前記封口板の周囲部に設置されて前記封口板と前記筒状
ケース部とを電気的に絶縁する絶縁部材（絶縁リング２
４）と、前記封口板と前記筒状ケース部の開口部との間
に設置されて封止する封止部材（封止リング２６）とを
備えたことを特徴とする。The capacitor according to the first aspect of the present invention is formed of a cylindrical case portion (2) for accommodating a capacitor element (8) such as an electric double layer capacitor element, and a good conductor such as metal. A sealing plate (6) for sealing the opening of the case-like portion, an external terminal (10) formed of the sealing plate itself, and electrically connected to the capacitor element;
An insulating member (insulating ring 2) installed around the sealing plate to electrically insulate the sealing plate from the cylindrical case portion.
4) and a sealing member (sealing ring 26) provided between the sealing plate and the opening of the cylindrical case portion for sealing.
【０００９】即ち、このコンデンサでは、良導体からな
る封口板自体が外部端子部を構成しており、従来のよう
な封口板と外部端子部との間の封止構造は不要である。
また、封口板が金属板等で形成され、分子レベルの高度
な気密性が実現されている。そして、封口板の周囲部に
は絶縁部材の設置で、外部端子部を構成する封口板と筒
状ケース部との電気的な絶縁が図られ、この絶縁部材と
は別に設置されたゴム等の封止部材によって筒状ケース
部と外部端子部との気密性が高められている。この結
果、電気二重層コンデンサ等の水分を嫌うコンデンサに
適する高度な気密性が得られており、長期に亘って水分
の侵入を阻止でき、コンデンサ特性の安定化と良好な寿
命特性が得られる。That is, in this capacitor, the sealing plate itself made of a good conductor constitutes the external terminal portion, and the conventional sealing structure between the sealing plate and the external terminal portion is unnecessary.
Further, the sealing plate is formed of a metal plate or the like, and high airtightness at a molecular level is realized. By installing an insulating member around the sealing plate, electrical insulation is achieved between the sealing plate and the cylindrical case portion forming the external terminal portion, and a rubber or the like provided separately from the insulating member is provided. The airtightness between the cylindrical case portion and the external terminal portion is enhanced by the sealing member. As a result, a high degree of airtightness suitable for a capacitor which dislikes moisture, such as an electric double layer capacitor, is obtained, the penetration of moisture can be prevented for a long time, and the capacitor characteristics can be stabilized and good life characteristics can be obtained.
【００１０】請求項２に係る本発明のコンデンサは、前
記絶縁部材を前記封口板の周囲に合成樹脂を一体成形し
てなることを特徴とする。即ち、封口板を合成樹脂内に
インサート成形する等の一体成形技術を用いて絶縁性封
口板を構成しているので、組立工程での部品点数の削減
を図ることができる。A capacitor according to a second aspect of the present invention is characterized in that the insulating member is formed by integrally molding a synthetic resin around the sealing plate. That is, since the insulating sealing plate is formed using an integral molding technique such as insert molding of the sealing plate in a synthetic resin, the number of parts in the assembly process can be reduced.
【００１１】請求項３に係る本発明のコンデンサは、前
記封止部材を弾性環状体で構成し、この弾性環状体を前
記封口板の周縁凹部（支持段部３４）に設置し、前記筒
状ケース部の開口縁部を加締めて食い込ませてなること
を特徴とする。即ち、封口板の周囲に凹部を形成し、こ
の凹部に弾性環状体からなる封止部材を設置しているの
で、封止部材が封口板から突出することなく、その面内
に封止部材を設置する等、外観形状の単一化等を図るこ
とができる。そして、この封止部材には筒状ケース部の
開口部を加締めて食い込ませているので、両者の結合が
密になり、高度な気密性が実現されている。According to a third aspect of the capacitor of the present invention, the sealing member is formed of an elastic annular body, and the elastic annular body is provided in a peripheral recess (a supporting step portion 34) of the sealing plate. It is characterized in that the opening edge of the case portion is swaged by caulking. That is, since a concave portion is formed around the sealing plate, and the sealing member made of an elastic annular body is installed in the concave portion, the sealing member does not protrude from the sealing plate, and the sealing member is placed in the surface thereof. For example, it is possible to unify the external shape such as installation. Since the opening of the cylindrical case portion is swaged into the sealing member, the two members are tightly connected to each other, and a high degree of airtightness is realized.
【００１２】[0012]
【発明の実施の形態】以下、本発明の実施の形態を図面
に示した実施例を参照して説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to embodiments shown in the drawings.
【００１３】図１ないし図３は本発明のコンデンサの実
施例を示し、図１は封口構造、図２は拡大して記載した
封口構造、図３は封口構造等に用いる構成部品を示して
いる。1 to 3 show an embodiment of a capacitor according to the present invention. FIG. 1 shows a sealing structure, FIG. 2 shows an enlarged sealing structure, and FIG. 3 shows components used for a sealing structure and the like. .
【００１４】円筒状等の筒状にアルミニウム等の金属材
料で筒状ケース部２が形成され、この筒状ケース部２の
各開口部側の内周面には加締めによって支持段部４が形
成されている。この筒状ケース部２の開口部に挿入され
た各封口板６は、支持段部４によって水平に支持され
る。A cylindrical case portion 2 is formed of a metal material such as aluminum into a cylindrical shape such as a cylindrical shape, and a supporting step portion 4 is formed on the inner peripheral surface of each opening side of the cylindrical case portion 2 by caulking. Is formed. Each sealing plate 6 inserted into the opening of the cylindrical case portion 2 is horizontally supported by the supporting step portion 4.
【００１５】封口板６は、アルミニウム等の良導体であ
る金属材料によって形成され、この実施例では、筒状ケ
ース部２と同一材料で、その開口部の形状に対応し、例
えば、円盤状に形成されている。この封口板６は、筒状
ケース部２の内部に収容される電気二重層コンデンサ素
子等のコンデンサ素子８の外部端子を構成しており、中
央部には外部端子部１０が形成され、図示しない配線部
材とを接続する手段としてねじ孔１２が形成されてい
る。そして、この封口板６の内面側には、コンデンサ素
子８のタブ１４と接続すべきリベット１６、１８を固定
するための一対のねじ孔２０、２２が形成されている。The sealing plate 6 is made of a metal material such as aluminum which is a good conductor. In this embodiment, the sealing plate 6 is made of the same material as that of the cylindrical case portion 2 and has a shape corresponding to the shape of the opening, for example, a disk shape. Have been. The sealing plate 6 constitutes an external terminal of a capacitor element 8 such as an electric double layer capacitor element housed inside the cylindrical case part 2, and an external terminal part 10 is formed in a central part and is not shown. A screw hole 12 is formed as means for connecting to a wiring member. A pair of screw holes 20 and 22 for fixing rivets 16 and 18 to be connected to the tab 14 of the capacitor element 8 are formed on the inner surface side of the sealing plate 6.
【００１６】また、封口板６の周壁面には、筒状ケース
部２との電気的な絶縁を図る絶縁部材としての絶縁リン
グ２４とともに、筒状ケース部２との気密性を保持する
封止部材としての封止リング２６が設置されている。即
ち、封口板６の周壁面には、図２に示すように、絶縁リ
ング２４を固定するための拘束突部２８が封口板６と一
体に形成されており、この拘束突部２８は幅の狭い第１
のフランジ部３０の縁部側に封口板６の厚み方向に幅を
広くした第２のフランジ部３２を形成したものである。
これらフランジ部３０、３２を覆う形態で絶縁リング２
４が取り付けられており、この実施例では、インサート
成形によって絶縁リング２４が形成されている。この絶
縁リング２４の高さは、絶縁リング２４を支持する手段
として封口板６に形成された周縁凹部としての支持段部
３４の高さ、即ち、封口板６の厚み方向の支持段部３４
の高さに合致しており、この高さは封口板６の１／２の
厚みより大きく設定されている。On the peripheral wall surface of the sealing plate 6, an insulating ring 24 as an insulating member for electrically insulating the sealing plate 6 from the cylindrical case portion 2, and a seal for maintaining airtightness with the cylindrical case portion 2. A sealing ring 26 as a member is provided. That is, on the peripheral wall surface of the sealing plate 6, as shown in FIG. 2, a constraining projection 28 for fixing the insulating ring 24 is formed integrally with the sealing plate 6. Narrow first
A second flange portion 32 having a width increased in the thickness direction of the sealing plate 6 is formed on the edge side of the flange portion 30.
The insulating ring 2 is formed so as to cover these flange portions 30 and 32.
In this embodiment, the insulating ring 24 is formed by insert molding. The height of the insulating ring 24 is determined by the height of the supporting step 34 as a peripheral recess formed in the sealing plate 6 as a means for supporting the insulating ring 24, that is, the supporting step 34 in the thickness direction of the sealing plate 6.
And this height is set to be larger than half the thickness of the sealing plate 6.
【００１７】また、支持段部３４は、封口板６の周縁部
に同一高さで周回しており、その外面縁部側には断面三
角形状の係止突部３６が形成されている。そして、この
支持段部３４及び絶縁リング２４の上面には封止リング
２６が設置され、この封止リング２６の外面側には筒状
ケース部２のカーリング部３８の先端部が食い込んでい
る。この封止リング２６は、封口板６の面内に設置され
ており、カーリング部３８の先端部の食い込みにより、
筒状ケース部２の支持段部４に支持されている封口板６
及び絶縁リング２４とカーリング部３８との間に圧縮状
態で挟み込まれ、高度な気密性が得られている。Further, the supporting step 34 is wrapped around the peripheral edge of the sealing plate 6 at the same height, and a locking projection 36 having a triangular cross section is formed on the outer edge side thereof. A sealing ring 26 is provided on the upper surfaces of the supporting step portion 34 and the insulating ring 24, and a distal end portion of a curling portion 38 of the cylindrical case portion 2 bites into an outer surface of the sealing ring 26. The sealing ring 26 is provided in the plane of the sealing plate 6, and cuts into the tip of the curling portion 38,
Sealing plate 6 supported by supporting step 4 of cylindrical case 2
And, it is sandwiched between the insulating ring 24 and the curling portion 38 in a compressed state, and high airtightness is obtained.
【００１８】そして、このコンデンサでは、図３に示す
ように、両端側が開口された筒状ケース部２が使用され
ており、各開口部に同一の封口構造が適用されている。
即ち、同一の封口板６が使用され、同様な絶縁リング２
４及び封止リング２６が使用されて各開口部が同一の封
口構造によって封止されている。この場合、各封口板６
で異なるのは、例えば、上側の封口板６にコンデンサ素
子８の陽極側のタブ１４が接続された場合には、下側の
封口板６には陰極側のタブ１４が接続され、各封口板６
が異なる極性に設定される。In this capacitor, as shown in FIG. 3, a cylindrical case portion 2 having both ends opened is used, and the same sealing structure is applied to each opening.
That is, the same sealing plate 6 is used, and the same insulating ring 2 is used.
4 and a sealing ring 26 are used to seal each opening with the same sealing structure. In this case, each sealing plate 6
For example, when the tab 14 on the anode side of the capacitor element 8 is connected to the upper sealing plate 6, the tab 14 on the cathode side is connected to the lower sealing plate 6, and each sealing plate 6 6
Are set to different polarities.
【００１９】また、封口板６には内外に貫通する透孔４
０が形成され、この透孔４０には内圧上昇時に開弁する
安全弁４２が取り付けられている。図４は、透孔４０及
び安全弁４２の構造の一実施例を示しており、封口板６
の透孔４０にはその中途部に抜止め手段として突部４４
が形成され、開口部側にはテーパ面４６が形成されてい
る。安全弁４２はゴム等の弾性材料で形成されたキャッ
プ体であって、中央部に凹部４８、筒状ケース部２側に
通常圧力での抜け防止として径大なテーパ部５０が形成
されている。この安全弁４２の頂部側には薄肉部５２が
形成されている。コンデンサの異常な内圧上昇時、安全
弁４２が開弁することで、異常な内圧上昇が防止されて
いる。The sealing plate 6 has through holes 4 penetrating in and out.
0 is formed, and a safety valve 42 that opens when the internal pressure rises is attached to the through hole 40. FIG. 4 shows an embodiment of the structure of the through hole 40 and the safety valve 42, and the sealing plate 6
Of the through hole 40 as a retaining means in the middle thereof.
Is formed, and a tapered surface 46 is formed on the opening side. The safety valve 42 is a cap body formed of an elastic material such as rubber, and has a concave portion 48 at the center portion and a large-diameter taper portion 50 at the side of the cylindrical case portion 2 for preventing slippage under normal pressure. A thin portion 52 is formed on the top side of the safety valve 42. When the internal pressure of the condenser is abnormally increased, the safety valve 42 is opened, thereby preventing the abnormal increase of the internal pressure.
【００２０】以上のように構成したので、このコンデン
サでは、良導体からなる封口板自体が外部端子部を構成
し、従来のような封口板と外部端子部との間の封止構造
が不要となっており、封口板が金属板等で形成されてい
ることから、分子レベルの高度な気密性が保持されてい
る。また、封口板の周囲部には絶縁部材の設置で、外部
端子部を構成する封口板と筒状ケース部との電気的な高
度な絶縁が維持され、同時に、この絶縁とは別に設置さ
れたゴム等の封止部材によって筒状ケース部と外部端子
部との気密性が保持されている。With this configuration, in this capacitor, the sealing plate itself made of a good conductor forms the external terminal portion, and the conventional sealing structure between the sealing plate and the external terminal portion becomes unnecessary. Since the sealing plate is formed of a metal plate or the like, high airtightness at a molecular level is maintained. In addition, by installing an insulating member on the periphery of the sealing plate, high-level electrical insulation between the sealing plate and the cylindrical case portion constituting the external terminal portion is maintained, and at the same time, the insulating plate is installed separately from this insulation. Airtightness between the cylindrical case portion and the external terminal portion is maintained by a sealing member such as rubber.
【００２１】したがって、電気二重層コンデンサ等の水
分を嫌うコンデンサに適する高度な気密性が得られてお
り、長期に亘って水分の侵入を阻止できる上、コンデン
サ特性の安定化と良好な寿命特性を図ることができる。Therefore, a high degree of airtightness suitable for a capacitor which dislikes moisture, such as an electric double layer capacitor, can be obtained, and it is possible to prevent moisture from entering for a long period of time, and to stabilize the capacitor characteristics and obtain a good life characteristic. Can be planned.
【００２２】なお、図５は、透孔４０及び安全弁４２の
構造の他の実施例を示しており、同様に形成された封口
板６の透孔４０にはキャップ状を成す安全弁４２が嵌入
されている。この場合、安全弁４２には通常圧力での抜
止めとしてフランジ部５４が形成されている。FIG. 5 shows another embodiment of the structure of the through hole 40 and the safety valve 42. A cap-shaped safety valve 42 is fitted into the through hole 40 of the sealing plate 6 similarly formed. ing. In this case, the safety valve 42 is formed with a flange portion 54 as a stopper at normal pressure.
【００２３】[0023]
【発明の効果】以上説明したように、本発明によれば、
次の効果が得られる。 ａ 金属等の良導体で形成された封口板と筒状ケース部
との間に弾性部材で形成された封止部材を設置したの
で、密封性の高い封口構造を持つコンデンサを実現する
ことができる。 ｂ 筒状ケース部の開口端部を加締めて封止部材に食い
込ませることで、封止部材と筒状ケース部との密着性な
いし封止強度を向上させることができ、高度な気密性を
実現することができる。 ｃ 封口板を筒状ケース部と絶縁部材によって絶縁した
ので、封口板を外部端子部として構成でき、封止構造の
簡略化と相俟って機械的強度の高い外部電極構造を実現
できる。外部端子部と封口板とが別部材である場合に
は、配線部材との接続時、両者間に作用する応力が気密
性を損なうおそれがあるが、このような不都合を回避で
き、特性の安定化とともに、良好な寿命特性を実現する
ことができる。As described above, according to the present invention,
The following effects are obtained. a. Since the sealing member formed of an elastic member is provided between the sealing plate formed of a good conductor such as metal and the cylindrical case portion, a capacitor having a sealing structure with high sealing performance can be realized. b By caulking the opening end of the cylindrical case portion and biting into the sealing member, it is possible to improve the adhesion or sealing strength between the sealing member and the cylindrical case portion, and to achieve high airtightness. Can be realized. c Since the sealing plate is insulated from the cylindrical case by the insulating member, the sealing plate can be configured as an external terminal portion, and the external electrode structure having high mechanical strength can be realized in combination with the simplification of the sealing structure. If the external terminal and the sealing plate are separate members, the stress acting between them when connecting with the wiring member may impair the airtightness, but such inconvenience can be avoided and the characteristics can be stabilized. As a result, good life characteristics can be realized.
【図１】本発明のコンデンサの実施例であるコンデンサ
の封口構造を示す断面図である。FIG. 1 is a cross-sectional view illustrating a sealing structure of a capacitor according to an embodiment of the present invention.
【図２】コンデンサの一部を拡大した封口構造を示す断
面図である。FIG. 2 is a sectional view showing a sealing structure in which a part of a capacitor is enlarged.
【図３】コンデンサの封口構造を実現する部品構成を示
す分解斜視図である。FIG. 3 is an exploded perspective view showing a component configuration for realizing a sealing structure of the capacitor.
【図４】コンデンサの安全弁構造の一実施例を示す断面
図である。FIG. 4 is a cross-sectional view showing one embodiment of a safety valve structure for a condenser.
【図５】コンデンサの安全弁構造の他の実施例を示す断
面図である。FIG. 5 is a cross-sectional view showing another embodiment of the safety valve structure of the condenser.
２ 筒状ケース部 ６ 封口板 １０ 外部端子部 ２４ 絶縁リング（絶縁部材） ２６ 封止リング（封止部材） ３４ 支持段部（周縁凹部） 2 Cylindrical case part 6 Sealing plate 10 External terminal part 24 Insulating ring (insulating member) 26 Sealing ring (sealing member) 34 Support step (peripheral recess)
───────────────────────────────────────────────────── フロントページの続き (72)発明者 森 正行 東京都青梅市東青梅１丁目167番地の１ 日本ケミコン株式会社内 (72)発明者 奥村 英二 神奈川県藤沢市土棚８番地 株式会社シー シーアール内 (72)発明者 竹田 敏和 神奈川県藤沢市土棚８番地 株式会社シー シーアール内 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Masayuki Mori 1-1167 Higashi-Ome, Ome-shi, Tokyo 1 Inside Nippon Chemi-Con Corporation (72) Inventor Eiji Okumura 8 Clayshrine, Fujisawa City, Kanagawa Prefecture CIR Corporation (72) Inventor Toshikazu Takeda 8 clay bowls in Fujisawa City, Kanagawa Prefecture
Claims (3)
サ素子を収容する筒状ケース部と、 金属等の良導体で形成されるとともに、前記筒状ケース
部の開口部を封口する封口板と、 この封口板自体で形成され、前記コンデンサ素子に電気
的に接続される外部端子部と、 前記封口板の周囲部に設置されて前記封口板と前記筒状
ケース部とを電気的に絶縁する絶縁部材と、 前記封口板と前記筒状ケース部の開口部との間に設置さ
れて封止する封止部材と、 を備えたことを特徴とするコンデンサ。1. A tubular case for accommodating a capacitor element such as an electric double-layer capacitor element, a sealing plate formed of a good conductor such as metal and sealing an opening of the cylindrical case, An external terminal portion formed of a plate itself and electrically connected to the capacitor element; and an insulating member installed around the sealing plate to electrically insulate the sealing plate and the cylindrical case portion. A sealing member provided between the sealing plate and the opening of the cylindrical case portion to seal.
成樹脂を一体成形してなることを特徴とする請求項１記
載のコンデンサ。2. The capacitor according to claim 1, wherein the insulating member is formed by integrally molding a synthetic resin around the sealing plate.
の弾性環状体を前記封口板の周縁凹部に設置し、前記筒
状ケース部の開口縁部を加締めて食い込ませてなること
を特徴とする請求項１記載のコンデンサ。3. The sealing member is constituted by an elastic annular body, and the elastic annular body is installed in a peripheral concave portion of the sealing plate, and the opening edge of the cylindrical case portion is swaged and bitten. The capacitor according to claim 1, wherein:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000300400A JP2002110481A (en) | 2000-09-29 | 2000-09-29 | Capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000300400A JP2002110481A (en) | 2000-09-29 | 2000-09-29 | Capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002110481A true JP2002110481A (en) | 2002-04-12 |
Family
ID=18782092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000300400A Pending JP2002110481A (en) | 2000-09-29 | 2000-09-29 | Capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002110481A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006173440A (en) * | 2004-12-17 | 2006-06-29 | Matsushita Electric Ind Co Ltd | Capacitor |
| JP2007165520A (en) * | 2005-12-13 | 2007-06-28 | Matsushita Electric Ind Co Ltd | Capacitor |
| US7843680B2 (en) | 2004-05-28 | 2010-11-30 | Panasonic Corporation | Capacitor and method of manufacturing the same |
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|---|---|---|---|---|
| JPH04123527U (en) * | 1991-04-24 | 1992-11-09 | マルコン電子株式会社 | Aluminum electrolytic capacitor |
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| JPH1064769A (en) * | 1996-08-14 | 1998-03-06 | Asahi Glass Co Ltd | Electric double layer capacitor |
| JPH11251201A (en) * | 1998-02-27 | 1999-09-17 | Nippon Chemicon Corp | Electrolytic capacitor |
| JP2000124086A (en) * | 1998-10-20 | 2000-04-28 | Nippon Chemicon Corp | Capacitor |
| JP2000138046A (en) * | 1998-10-30 | 2000-05-16 | Toshiba Battery Co Ltd | Sealed battery |
| JP2000243670A (en) * | 1999-02-17 | 2000-09-08 | Matsushita Electric Ind Co Ltd | Electrical double-layer capacitor and manufacture of the same |
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2000
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04123527U (en) * | 1991-04-24 | 1992-11-09 | マルコン電子株式会社 | Aluminum electrolytic capacitor |
| JPH08293295A (en) * | 1995-04-24 | 1996-11-05 | Matsushita Electric Ind Co Ltd | Sealing plate of battery |
| JPH0982583A (en) * | 1995-09-12 | 1997-03-28 | Marcon Electron Co Ltd | Electrolytic capacitor |
| JPH1064769A (en) * | 1996-08-14 | 1998-03-06 | Asahi Glass Co Ltd | Electric double layer capacitor |
| JPH11251201A (en) * | 1998-02-27 | 1999-09-17 | Nippon Chemicon Corp | Electrolytic capacitor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7843680B2 (en) | 2004-05-28 | 2010-11-30 | Panasonic Corporation | Capacitor and method of manufacturing the same |
| JP2006173440A (en) * | 2004-12-17 | 2006-06-29 | Matsushita Electric Ind Co Ltd | Capacitor |
| JP4600028B2 (en) * | 2004-12-17 | 2010-12-15 | パナソニック株式会社 | Capacitor |
| JP2007165520A (en) * | 2005-12-13 | 2007-06-28 | Matsushita Electric Ind Co Ltd | Capacitor |
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