JP2003318070A - Electric double-layer capacitor - Google Patents
Electric double-layer capacitorInfo
- Publication number
- JP2003318070A JP2003318070A JP2002123654A JP2002123654A JP2003318070A JP 2003318070 A JP2003318070 A JP 2003318070A JP 2002123654 A JP2002123654 A JP 2002123654A JP 2002123654 A JP2002123654 A JP 2002123654A JP 2003318070 A JP2003318070 A JP 2003318070A
- Authority
- JP
- Japan
- Prior art keywords
- capacitor
- electrode body
- negative electrode
- electric double
- strip
- 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.)
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Classifications
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- 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】この発明は、電気二重層キャ
パシタに関する。TECHNICAL FIELD The present invention relates to an electric double layer capacitor.
【０００２】[0002]
【従来の技術】近年、各種の蓄電装置として、急速充電
が可能で充放電サイクル寿命が長い、電気二重層キャパ
シタの適用技術が注目される。2. Description of the Related Art In recent years, as various power storage devices, attention has been paid to a technique of applying an electric double layer capacitor, which can be rapidly charged and has a long charge / discharge cycle life.
【０００３】図６は、電気二重層キャパシタの構成を例
示する模式図であり、正極体１ａと負極体１ｂとセパレ
ータ２は交互に積層して構成される。この積層体３（キ
ャパシタ本体）は電解液に浸され、容器（図示せず）に
収容して密封される。FIG. 6 is a schematic view illustrating the configuration of an electric double layer capacitor, which is constructed by alternately stacking a positive electrode body 1a, a negative electrode body 1b, and a separator 2. The laminated body 3 (capacitor body) is immersed in an electrolytic solution, housed in a container (not shown), and sealed.
【０００４】正極体１ａおよび負極体１ｂは、活性炭電
極４ａ，４ｂ（分極性電極）と集電極５ａ，５ｂ（アル
ミ電極）とからなり、電荷は活性炭電極４ａ，４ｂにた
まり、電気の出し入れは集電極５ａ，５ｂを介して行わ
れる。正極体１ａと負極体１ｂが同数のため、積層体３
において、片端が正極体１ａの場合、反対側の片端は負
極体１ｂとなるのである。The positive electrode body 1a and the negative electrode body 1b are composed of activated carbon electrodes 4a and 4b (polarizable electrodes) and collector electrodes 5a and 5b (aluminum electrodes). Electric charges are accumulated in the activated carbon electrodes 4a and 4b and electricity is taken in and out. This is performed via the collecting electrodes 5a and 5b. Since the positive electrode bodies 1a and the negative electrode bodies 1b have the same number, the laminated body 3
In the case where one end is the positive electrode body 1a, the opposite one end is the negative electrode body 1b.
【０００５】なお、特開2001-52974号においては、帯状
の正極体と帯状の負極体とこれらの間を隔てるセパレー
タとからロール巻に構成されるキャパシタ本体と、キャ
パシタ本体を電解液と共に密封する容器と、を備えるも
のが開示される。[0005] In Japanese Patent Laid-Open No. 2001-52974, a capacitor body constituted by a belt-shaped positive electrode body, a belt-shaped negative electrode body, and a separator that separates them from each other in a roll winding, and a capacitor body are sealed together with an electrolytic solution. A container is disclosed.
【０００６】[0006]
【発明が解決しようとする課題】このような電気二重層
キャパシタについて、諸種の研究開発を積み重ねる中か
ら、積層体と容器との間において、正極の表面に接して
炭素・水素・酸素などから構成される物質（たとえば、
セルロースなど紙）があると、その物質に脱水が起こり
炭化する、という知見が得られた。With respect to such an electric double layer capacitor, various kinds of research and development are being accumulated, and a structure composed of carbon, hydrogen, oxygen, etc. is formed in contact with the surface of the positive electrode between the laminated body and the container. The substance (for example,
It was found that the presence of paper such as cellulose causes dehydration and carbonization of the substance.
【０００７】図６の場合、右端の正極体１ａと容器との
間に介在する紙製のセパレータ（積層体３の最外層）が
炭化してしまうのである。炭化物は細かく崩れやすく、
これが電解液を浮遊すると、リーク電流が発生しやすく
なり、自己放電特性を悪化させる可能性も考えられる。In the case of FIG. 6, the paper separator (the outermost layer of the laminated body 3) interposed between the positive electrode body 1a at the right end and the container is carbonized. Carbide is fine and easily broken,
If this floats in the electrolytic solution, a leak current is likely to occur and the self-discharge characteristics may be deteriorated.
【０００８】この発明は、このような知見に基づいてな
されたものであり、容器とキャパシタ本体との間に物質
の炭化を生じることのない、高品質の電気二重層キャパ
シタを実現しようとするものである。The present invention has been made based on such knowledge, and is intended to realize a high-quality electric double layer capacitor in which carbonization of a substance does not occur between a container and a capacitor body. Is.
【０００９】[0009]
【課題を解決するための手段】第１の発明は、帯状の正
極体と帯状の負極体とこれらの間を隔てるセパレータと
からロール巻に構成されるキャパシタ本体と、キャパシ
タ本体を電解液と共に密封する容器と、を備える電気二
重層キャパシタにおいて、帯状の負極体は帯状の正極体
よりもロール巻の終端側が１巻き分以上に長く設定した
ことを特徴とする。A first aspect of the present invention is to seal a capacitor main body, which is composed of a band-shaped positive electrode body, a band-shaped negative electrode body, and a separator that separates them from each other in a roll winding, and a capacitor body together with an electrolytic solution. In the electric double layer capacitor including the container, the strip-shaped negative electrode body is set such that the end side of the roll winding is longer than that of the strip-shaped positive electrode body by one winding or more.
【００１０】第２の発明は、帯状の正極体と帯状の負極
体とこれらの間を隔てるセパレータとからロール巻に構
成されるキャパシタ本体と、キャパシタ本体を電解液と
共に密封する容器と、を備える電気二重層キャパシタに
おいて、ロール巻のキャパシタ本体の外周をくるむ円筒
形の負極体を設定したことを特徴とする。A second aspect of the present invention comprises a capacitor body which is formed by roll winding of a strip-shaped positive electrode body, a strip-shaped negative electrode body and a separator which separates the strip-shaped positive electrode body and a separator, and a container which seals the capacitor body together with an electrolytic solution. In the electric double layer capacitor, a cylindrical negative electrode body wrapping around the outer circumference of the roll-wound capacitor body is set.
【００１１】第３の発明は、帯状の正極体と帯状の負極
体とこれらの間を隔てるセパレータとからロール巻に構
成されるキャパシタ本体と、キャパシタ本体を電解液と
共に密封する容器と、を備える電気二重層キャパシタに
おいて、ロール巻のキャパシタ本体の最外層の極性を負
極に設定したことを特徴とする。A third aspect of the present invention includes a capacitor main body which is roll-wound from a strip-shaped positive electrode body, a strip-shaped negative electrode body, and a separator which separates these from each other, and a container which seals the capacitor body together with an electrolytic solution. In the electric double layer capacitor, the polarity of the outermost layer of the roll-wound capacitor body is set to the negative electrode.
【００１２】[0012]
【発明の効果】第１の発明においては、帯状の正極体と
帯状の負極体とこれらの間を隔てるセパレータとから、
これらを重ね合わせる帯状体（キャパシタ本体の素材に
相当する）が形成され、これを丸めることにより、キャ
パシタ本体はロール形状の巻回体に構成されるのであ
る。According to the first aspect of the present invention, the strip-shaped positive electrode body, the strip-shaped negative electrode body, and the separator that separates them from each other
A band-shaped body (corresponding to the material of the capacitor body) is formed by stacking these, and by rolling this, the capacitor body is formed into a roll-shaped wound body.
【００１３】ロール巻の断面は、正極体と負極体がセパ
レータを挟みせながら、径方向へ交互に重なる具合にな
り、ロール巻の終端側において、少なくとも１巻き分を
長く設定の負極体は、それまでの最外層となるセパレー
タに巻き付けられ、キャパシタ本体の最外層を形成す
る。したがって、正極体がキャパシタ本体の最外層にな
らないので、最外層の表面に接して炭素・水素・酸素な
どから構成される物質（たとえば、セルロースなど紙）
があっても、その物質に脱水が起こり炭化するようなこ
とはない。The cross section of the roll winding is such that the positive electrode body and the negative electrode body are alternately overlapped with each other in the radial direction while sandwiching the separator, and at the end side of the roll winding, at least one roll of the negative electrode body is set to be long, It is wound around the separator which is the outermost layer until then, and forms the outermost layer of the capacitor body. Therefore, since the positive electrode body does not form the outermost layer of the capacitor body, a substance composed of carbon, hydrogen, oxygen, etc. in contact with the surface of the outermost layer (for example, paper such as cellulose)
However, the substance does not dehydrate and carbonize.
【００１４】負極体と正極体との間を隔てるセパレータ
については、負極体と一緒に長く設定することも考えら
れる。その場合においても、巻回体の最外層となるセパ
レータに接するのは、１巻き分以上を長く設定の負極体
となり、正極体が最外層のセパレータに接しないので、
セパレータが紙製であっても、これに脱水が起こり炭化
するようなことはない。The separator for separating the negative electrode body and the positive electrode body may be set to be long together with the negative electrode body. Even in that case, the separator that is the outermost layer of the wound body is in contact with the separator that is the outermost layer because the negative electrode body is set to be longer than one winding and the positive electrode body does not contact the outermost layer separator.
Even if the separator is made of paper, it will not be dehydrated and carbonized.
【００１５】この結果、容器とキャパシタ本体との間に
おいて、紙など物質の炭化現象が避けられ、自己放電特
性も良好な高品質の電気二重層キャパシタを廉価に提供
できる。As a result, a carbonization phenomenon of a substance such as paper can be avoided between the container and the capacitor body, and a high quality electric double layer capacitor having good self-discharge characteristics can be provided at a low price.
【００１６】第２の発明においては、円筒形の負極体に
より、容器とキャパシタ本体との間に炭素・水素・酸素
などから構成される物質があっても、その物質は円筒形
の負極体に接するのであり、正極の表面に接しないた
め、第１の発明と同じく、紙など物質の炭化に原因す
る、自己放電特性の悪化が避けられ、高品質の電気二重
層キャパシタを廉価に提供できる。In the second aspect of the present invention, the cylindrical negative electrode body has a cylindrical negative electrode body even if there is a substance composed of carbon, hydrogen, oxygen, etc. between the container and the capacitor body. Since they are in contact with each other and do not contact the surface of the positive electrode, deterioration of self-discharge characteristics due to carbonization of a substance such as paper can be avoided, and a high-quality electric double layer capacitor can be provided at a low price, as in the first invention.
【００１７】第３の発明においては、キャパシタ本体の
最外層が負極に設定のため、第１の発明と同様の効果が
得られる。In the third invention, since the outermost layer of the capacitor body is set to the negative electrode, the same effect as the first invention can be obtained.
【００１８】[0018]
【発明の実施の形態】図１〜図３に基づいて、第１の実
施形態に係る電気二重層キャパシタの一例を説明する
と、帯状の正極体１１ａと帯状の負極体１１ｂとこれら
の間を隔てるセパレータ１２ａ，１２ｂとからロール巻
に構成されるキャパシタ本体１３と、キャパシタ本体１
３を電解液と共に密封する容器２０と、を備える。BEST MODE FOR CARRYING OUT THE INVENTION An example of the electric double layer capacitor according to the first embodiment will be described with reference to FIGS. 1 to 3, and a strip-shaped positive electrode body 11a and a strip-shaped negative electrode body 11b are separated from each other. A capacitor body 13 configured by a roll winding from the separators 12a and 12b, and a capacitor body 1
And a container 20 for hermetically sealing 3 together with the electrolytic solution.
【００１９】容器２０は、軽量な金属（たとえば、アル
ミニウム）から底付き円筒形に成形される。２０ａは容
器２０の開口部を密封する金属（たとえば、アルミニウ
ム）の蓋であり、容器２０の内面および蓋２０ａの内面
は絶縁層で被覆される。２１ａ，２１ｂは１対の端子で
あり、蓋２０ａを貫通する導電部２２と、蓋２０ａと導
電部２２との間に介在する絶縁部２３と、から構成され
る。The container 20 is formed of a lightweight metal (for example, aluminum) into a cylindrical shape with a bottom. Reference numeral 20a denotes a metal (for example, aluminum) lid that seals the opening of the container 20, and the inner surface of the container 20 and the inner surface of the lid 20a are covered with an insulating layer. 21a and 21b are a pair of terminals, and are composed of a conductive portion 22 penetrating the lid 20a and an insulating portion 23 interposed between the lid 20a and the conductive portion 22.
【００２０】図３において、正極体１１ａおよび負極体
１１ｂは、集電極１５ａ，１５ｂと活性炭電極１６ａ，
１６ｂ（分極性電極）とから組成される。これらの集電
極１５ａ，１５ｂは、帯状の金属箔（たとえば、アルミ
ニウム箔）からなり、その両面に活性炭電極１６ａ，１
６ｂが形成される。負極体１１ｂの帯状平面にセパレー
タ１２ｂ（紙製などの多孔質膜）を介して帯状の正極体
１１ａが重ねられ、正極体１１ａの帯状平面にセパレー
タ１２ａが重ねられ、４層に重なる帯状体１７（キャパ
シタ本体１３の素材）が形成される。In FIG. 3, the positive electrode body 11a and the negative electrode body 11b are composed of collector electrodes 15a, 15b and activated carbon electrodes 16a,
16b (polarizable electrode). These collector electrodes 15a, 15b are made of strip-shaped metal foil (for example, aluminum foil), and have activated carbon electrodes 16a, 1 on both sides thereof.
6b is formed. The strip-shaped positive electrode body 11a is stacked on the strip-shaped flat surface of the negative electrode body 11b through the separator 12b (a porous film made of paper or the like), the separator 12a is stacked on the strip-shaped flat surface of the positive electrode body 11a, and the strip-shaped body 17 is laminated in four layers. (Material of the capacitor body 13) is formed.
【００２１】この帯状体１７は、図２のように負極体１
１ｂを内側に丸められ、ロール形状の巻回体１３（キャ
パシタ本体）に形成される。巻回体１３の最外層を負極
化すべく、帯状の負極体１１ｂは、帯状の正極体１１ａ
よりも、ロール巻の終端側が１巻き分を長く設定される
のである。As shown in FIG. 2, the strip-shaped body 17 is used for the negative electrode body 1.
1b is rolled inward to form a roll-shaped winding body 13 (capacitor body). In order to make the outermost layer of the wound body 13 negative, the strip-shaped negative electrode body 11b is the strip-shaped positive electrode body 11a.
Rather, the end side of the roll winding is set longer by one winding.
【００２２】巻回体１７の断面は、正極体１１ａと負極
体１１ｂがセパレータ１２ａ，１２ｂを挟みながら、径
方向へ交互に重なる具合になり、ロール巻の終端側にお
いて、１巻き分を長く設定の負極体１１ｂは、それまで
の最外層（セパレータ１２ａ）に巻き付けられ、巻回体
１３の最外層を形成する。The cross section of the wound body 17 is such that the positive electrode body 11a and the negative electrode body 11b are alternately overlapped in the radial direction while sandwiching the separators 12a and 12b, and one roll is set to be long at the end side of the roll winding. The negative electrode body 11b is wound around the outermost layer (separator 12a) that has been formed so far to form the outermost layer of the wound body 13.
【００２３】キャパシタ本体１３は、電解液に浸され、
容器２０に収容される。正極体１１ａおよび負極体１１
ｂの集電極１６ａ，１６ｂにそれぞれ極性の対応する端
子２１ａ，２１ｂが接続され、容器２０に蓋２０ａを付
けて密封される。The capacitor body 13 is immersed in an electrolytic solution,
It is housed in a container 20. Positive electrode body 11a and negative electrode body 11
Terminals 21a and 21b having corresponding polarities are connected to the collector electrodes 16a and 16b of b, respectively, and the container 20 is sealed by attaching a lid 20a.
【００２４】このような構成により、巻回体１３の最外
層が負極体１１ｂとなり、最外層の極性が正極とならな
いので、最外層の表面に接して炭素・水素・酸素などか
ら構成される物質（紙など）があっても、その物質に脱
水が起こり炭化するようなことはない。With such a structure, the outermost layer of the wound body 13 serves as the negative electrode body 11b, and the polarity of the outermost layer does not serve as the positive electrode. Therefore, a substance composed of carbon, hydrogen, oxygen or the like in contact with the surface of the outermost layer. Even if there is (paper, etc.), the substance does not dehydrate and carbonize.
【００２５】負極体１１ｂの電極面を保護するため、正
極体１１ａと負極体１１ｂとの間を隔てるセパレータ１
２ｂについても、負極体１１ｂと一緒に１巻き分を長く
設定することが考えられる。その場合、巻回体１３の最
外層はセパレータ１２ｂになるが、このセパレータ１２
ｂに接するのは、１巻き分を長く設定の負極体１１ｂと
なり、正極体１１ａが最外層のセパレータ１２ｂに接し
ないので、セパレータ１２ｂが紙製であっても、これに
脱水が起こり炭化するようなことはない。The separator 1 for separating the positive electrode body 11a and the negative electrode body 11b in order to protect the electrode surface of the negative electrode body 11b.
Regarding 2b as well, it is conceivable to set one winding longer together with the negative electrode body 11b. In that case, the outermost layer of the wound body 13 becomes the separator 12b.
Since b is in contact with the negative electrode body 11b which is set to be longer by one winding, and the positive electrode body 11a does not contact the outermost layer separator 12b, even if the separator 12b is made of paper, it may be dehydrated and carbonized. There is no such thing.
【００２６】この結果、容器２０とキャパシタ本体１３
との間において、紙など物質の炭化現象が避けられ、自
己放電特性も良好な高品質の電気二重層キャパシタを廉
価に提供できる。As a result, the container 20 and the capacitor body 13
In between, a carbonization phenomenon of a substance such as paper can be avoided, and a high-quality electric double layer capacitor having good self-discharge characteristics can be provided at a low price.
【００２７】図１，図３，図４に基づいて、第２の実施
形態に係る電気二重層キャパシタを説明すると、キャパ
シタ本体１３ａの外周をくるむ円筒形の負極体１８が備
えられる。キャパシタ本体１３ａは、４層の帯状体１７
Ａから、負極体１１ｂを内側に丸められ、ロール型の巻
回体に形成される。４層の帯状体１７Ａにおいて、正極
体１１ａと負極体１１ｂ（およびセパレータ１２ａ，１
２ｂ）の長さは同一に設定される。Referring to FIGS. 1, 3 and 4, the electric double layer capacitor according to the second embodiment will be described. The electric double layer capacitor is provided with a cylindrical negative electrode body 18 wrapping the outer circumference of the capacitor body 13a. The capacitor body 13a is a four-layer strip 17
From A, the negative electrode body 11b is rolled inward and formed into a roll-type wound body. In the four-layer strip 17A, the positive electrode body 11a and the negative electrode body 11b (and the separators 12a, 1
The lengths of 2b) are set to be the same.
【００２８】キャパシタ本体１３ａは、円筒形の負極体
１８に納められ、全体が電解液に浸され、容器に収容さ
れる。円筒形の負極体１８は、単なる導電性物質の筒
（たとえば、アルミニウム）でも良いし、集電極（たと
えば、アルミニウム箔）の両面に活性炭電極を備えるも
のも良く、筒の任意箇所あるいは集電極が負極の端子２
１ｂに接続される。キャパシタ本体１３ａは、正極体１
１ａおよび負極体１１ｂの集電極１６ａ，１６ｂにそれ
ぞれ極性の対応する端子２１ａ，２１ｂが接続され、容
器２０に蓋２０ａを付けて密封される。The capacitor body 13a is housed in a cylindrical negative electrode body 18, and the whole is immersed in an electrolytic solution and housed in a container. The cylindrical negative electrode body 18 may be a tube of a simple conductive material (for example, aluminum) or may be provided with active carbon electrodes on both sides of a collecting electrode (for example, aluminum foil). Negative terminal 2
1b is connected. The capacitor body 13a is the positive electrode body 1
1a and the collector electrodes 16a and 16b of the negative electrode body 11b are respectively connected to terminals 21a and 21b having corresponding polarities, and the container 20 is sealed with a lid 20a.
【００２９】このような構成により、円筒形の負極体１
８により、容器２０との間に炭素・水素・酸素などから
構成される物質があっても、その物質は円筒形の負極体
１８に接するのであり、正極の表面に接しないため、炭
化現象の発生が避けられ、電気二重層キャパシタの自己
放電特性を良好に維持できる。With this configuration, the cylindrical negative electrode body 1
Even if there is a substance composed of carbon, hydrogen, oxygen, etc., between the container 20 and the container 20, the substance contacts the cylindrical negative electrode body 18 and does not contact the surface of the positive electrode. Generation can be avoided and good self-discharge characteristics of the electric double layer capacitor can be maintained.
【００３０】円筒形の負極体１８に集電極を用いるもの
については、材料費を節約するため、集電極の両面でな
く、円筒の内面にのみ、活性炭電極を形成（円筒の外面
は、活性炭電極を省略）してもよい。In the case where the collecting electrode is used for the cylindrical negative electrode body 18, in order to save the material cost, the activated carbon electrode is formed only on the inner surface of the cylinder, not on both surfaces of the collecting electrode (the outer surface of the cylinder is the activated carbon electrode). May be omitted).
【００３１】図１，図５に基づいて、第３の実施形態を
説明すると、キャパシタ本体１３ｂは、４層の帯状体１
７Ｂから、正極体１１ａを内側に丸められ、ロール形状
の巻回体に形成される。A third embodiment will be described with reference to FIGS. 1 and 5. The capacitor body 13b is a four-layer strip 1.
The positive electrode body 11a is rolled inward from 7B to form a roll-shaped wound body.
【００３２】４層の帯状体１７Ｂにおいては、正極体１
１ａの帯状平面にセパレータ１２ａ（紙製などの多孔質
膜）を介して帯状の負極体１１ｂが重ねられ、負極体１
１ｂの帯状平面にセパレータ１２ｂが重ねられ、正極体
１１ａと負極体１１ｂ（およびセパレータ１２ａ，１２
ｂ）が同一の長さに設定されるのである。In the four-layer strip 17B, the positive electrode body 1
A strip-shaped negative electrode body 11b is overlaid on the strip-shaped flat surface of 1a via a separator 12a (a porous film made of paper or the like) to form a negative electrode body 1.
The separator 12b is superposed on the strip-shaped plane of 1b, and the positive electrode body 11a and the negative electrode body 11b (and the separators 12a, 12
b) is set to the same length.
【００３３】キャパシタ本体１３は、電解液に浸され、
容器２０に収容される。正極体１１ａおよび負極体１１
ｂの集電極１６ａ，１６ｂにそれぞれ極性の対応する端
子２１ａ，２１ｂが接続され、容器２０に蓋２０ａを付
けて密封される。The capacitor body 13 is immersed in an electrolytic solution,
It is housed in a container 20. Positive electrode body 11a and negative electrode body 11
Terminals 21a and 21b having corresponding polarities are connected to the collector electrodes 16a and 16b of b, respectively, and the container 20 is sealed by attaching a lid 20a.
【００３４】このような構成により、巻回体１３ｂの最
外層はセパレータ１２ｂとなり、このセパレータ１２ｂ
に接するのは負極体１１ｂであり、正極体１１ａが最外
層のセパレータ１２ｂに接しないので、セパレータ１２
ｂが紙製であっても、これに脱水が起こり炭化するよう
なことはない。With this structure, the outermost layer of the wound body 13b becomes the separator 12b.
Is in contact with the negative electrode body 11b, and the positive electrode body 11a is not in contact with the outermost layer separator 12b.
Even if b is made of paper, it will not be dehydrated and carbonized.
【００３５】この結果、容器２０とキャパシタ本体１３
ｂの間において、紙など物質の炭化現象が避けられ、自
己放電特性も良好な高品質の電気二重層キャパシタを廉
価に提供できる。As a result, the container 20 and the capacitor body 13
During the period b, the carbonization phenomenon of the material such as paper can be avoided, and a high-quality electric double layer capacitor having good self-discharge characteristics can be provided at a low price.
【図１】この発明に係る電気二重層キャパシタの外観図
である。FIG. 1 is an external view of an electric double layer capacitor according to the present invention.
【図２】同じくキャパシタ本体の構成を説明する斜視図
である。FIG. 2 is a perspective view for explaining the structure of the capacitor body as well.
【図３】同じくキャパシタ本体の素材を説明する断面図
である。FIG. 3 is a sectional view illustrating a material of the capacitor body.
【図４】別の実施形態を説明する斜視図である。FIG. 4 is a perspective view illustrating another embodiment.
【図５】別の実施形態を説明する斜視図であるFIG. 5 is a perspective view illustrating another embodiment.
【図６】従来の技術に係る電気二重層の構成を説明する
模式図である。FIG. 6 is a schematic diagram illustrating a configuration of an electric double layer according to a conventional technique.
１１ａ 正極体 １１ｂ 負極体 １２ａ，１２ｂ セパレータ １３，１３ａ，１３ｂ キャパシタ本体 １５ａ，１５ｂ 活性炭電極（分極性電極） １６ａ，１６ｂ 集電極 １７，１７Ａ，１７Ｂ 帯状体 11a cathode body 11b Negative electrode body 12a, 12b separator 13, 13a, 13b Capacitor body 15a, 15b Activated carbon electrode (polarizable electrode) 16a, 16b collecting electrode 17,17A, 17B Strip
───────────────────────────────────────────────────── フロントページの続き (72)発明者 本多 一雅 埼玉県上尾市大字壱丁目１番地 日産ディ ーゼル工業株式会社内 (72)発明者 竹田 雅己 埼玉県上尾市大字壱丁目１番地 日産ディ ーゼル工業株式会社内 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Kazumasa Honda 1-chome Ichichome, Ageo City, Saitama NISSAN DI Within Hazel Industry Co., Ltd. (72) Inventor Masaki Takeda 1-chome Ichichome, Ageo City, Saitama NISSAN DI Within Hazel Industry Co., Ltd.
Claims (3)
を隔てるセパレータとからロール巻に構成されるキャパ
シタ本体と、キャパシタ本体を電解液と共に密封する容
器と、を備える電気二重層キャパシタにおいて、帯状の
負極体は帯状の正極体よりもロール巻の終端側が１巻き
分以上に長く設定したことを特徴とする電気二重層キャ
パシタ。1. An electric double layer capacitor comprising: a capacitor main body formed from a strip-shaped positive electrode body, a strip-shaped negative electrode body, and a separator that separates them from each other, and a container that seals the capacitor body together with an electrolytic solution. In the electric double layer capacitor, the strip-shaped negative electrode body is set longer than the strip-shaped positive electrode body by one roll or more on the end side of roll winding.
を隔てるセパレータとからロール巻に構成されるキャパ
シタ本体と、キャパシタ本体を電解液と共に密封する容
器と、を備える電気二重層キャパシタにおいて、ロール
巻きのキャパシタ本体の外周をくるむ円筒形の負極体を
設定したことを特徴とする電気二重層キャパシタ。2. An electric double layer capacitor, comprising: a capacitor main body formed from a strip-shaped positive electrode body, a strip-shaped negative electrode body, and a separator that separates them from each other in a roll winding; and a container for sealing the capacitor body together with an electrolytic solution. In the electric double layer capacitor, a cylindrical negative electrode body wrapping around an outer circumference of a roll-wound capacitor body is set.
を隔てるセパレータとからロール巻に構成されるキャパ
シタ本体と、キャパシタ本体を電解液と共に密封する容
器と、を備える電気二重層キャパシタにおいて、キャパ
シタ本体の最外層の極性を負極に設定したことを特徴と
する電気二重層キャパシタ。3. An electric double layer capacitor comprising: a capacitor main body formed from a band-shaped positive electrode body, a band-shaped negative electrode body, and a separator that separates them from each other in a roll winding; and a container for sealing the capacitor body together with an electrolytic solution. In the electric double layer capacitor, the polarity of the outermost layer of the capacitor body is set to the negative electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002123654A JP3986356B2 (en) | 2002-04-25 | 2002-04-25 | Electric double layer capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002123654A JP3986356B2 (en) | 2002-04-25 | 2002-04-25 | Electric double layer capacitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003318070A true JP2003318070A (en) | 2003-11-07 |
| JP3986356B2 JP3986356B2 (en) | 2007-10-03 |
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ID=29538882
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002123654A Expired - Fee Related JP3986356B2 (en) | 2002-04-25 | 2002-04-25 | Electric double layer capacitor |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007201118A (en) * | 2006-01-26 | 2007-08-09 | Matsushita Electric Ind Co Ltd | Wound electric double-layer capacitor |
| WO2019188759A1 (en) * | 2018-03-30 | 2019-10-03 | パナソニックＩｐマネジメント株式会社 | Electrochemical device |
-
2002
- 2002-04-25 JP JP2002123654A patent/JP3986356B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007201118A (en) * | 2006-01-26 | 2007-08-09 | Matsushita Electric Ind Co Ltd | Wound electric double-layer capacitor |
| WO2019188759A1 (en) * | 2018-03-30 | 2019-10-03 | パナソニックＩｐマネジメント株式会社 | Electrochemical device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3986356B2 (en) | 2007-10-03 |
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