JP2001060534A - Electric double-layer capacitor - Google Patents
Electric double-layer capacitorInfo
- Publication number
- JP2001060534A JP2001060534A JP11235810A JP23581099A JP2001060534A JP 2001060534 A JP2001060534 A JP 2001060534A JP 11235810 A JP11235810 A JP 11235810A JP 23581099 A JP23581099 A JP 23581099A JP 2001060534 A JP2001060534 A JP 2001060534A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- electric double
- layer capacitor
- projection
- cylindrical portion
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/74—Terminals, e.g. extensions of current collectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/78—Cases; Housings; Encapsulations; Mountings
- H01G11/80—Gaskets; Sealings
-
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電極と電解液との
界面に電気二重層を形成し、この電気二重層に電気を蓄
える電気二重層コンデンサに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric double layer capacitor in which an electric double layer is formed at an interface between an electrode and an electrolytic solution, and the electric double layer stores electricity.
【０００２】[0002]
【従来の技術】電気二重層コンデンサ（電気二重層キャ
パシタ）は電気を充電・放電する蓄電素子であり、電気
二重層コンデンサとしては、例えば特開平１０−２９４
１０２号公報「蓄電素子」が知られている。この電気二
重層コンデンサは、同公報の図３に示すとおり、正・負
電極及びセパレータを重ね合わせて電極巻回体をロール
状に巻回し、負電極の下端に負集電板を電気的に接続
し、正電極の上端に正集電板を電気的に接続し、この状
態の電極巻回体を有底筒形の外装缶に収納し、外装缶に
電解液を注入した後外装缶を蓋体で塞ぎ、蓋体に正集電
板を電気的に接続し且つ外装缶に負集電板を電気的に接
続したものである。2. Description of the Related Art An electric double-layer capacitor (electric double-layer capacitor) is a power storage element for charging and discharging electricity.
Japanese Patent Application Publication No. 102-102, “electric storage element” is known. In this electric double layer capacitor, as shown in FIG. 3 of the publication, the positive / negative electrodes and the separator are overlapped and the electrode winding body is wound in a roll shape, and a negative current collector is electrically connected to the lower end of the negative electrode. Connect the positive current collector plate to the upper end of the positive electrode electrically, store the wound electrode body in this state in a bottomed cylindrical outer can, inject the electrolyte into the outer can, and then remove the outer can. It is closed with a lid, a positive current collector is electrically connected to the lid, and a negative current collector is electrically connected to the outer can.
【０００３】この技術によれば、蓋体を正集電板に電気
的に接続するために蓋体側に板ばね状の押圧部を取り付
け、この押圧部を正集電板の中央凸部に電気的に接触さ
せている。しかし、押圧部と凸部とは局部接触であるた
め接触面積が小さい。この結果、押圧部と凸部との局部
接触部に流れる電流はある程度規制される。接触部に大
きな電量を流すことは、電気二重層コンデンサの性能を
高める上で重要である。次図で比較的大きな電流を流す
ことができる電気二重層コンデンサについて説明する。According to this technique, a leaf spring-shaped pressing portion is attached to the lid to electrically connect the lid to the normal current collecting plate, and the pressing portion is electrically connected to a central convex portion of the normal current collecting plate. Contact. However, since the pressing portion and the convex portion are in local contact, the contact area is small. As a result, the current flowing in the local contact portion between the pressing portion and the convex portion is regulated to some extent. It is important that a large amount of electric current flow through the contact portion to improve the performance of the electric double layer capacitor. An electric double-layer capacitor capable of flowing a relatively large current will be described with reference to the following figure.
【０００４】図５は従来の電気二重層コンデンサの断面
図である。電気二重層コンデンサ１００は、電極巻回体
１０１の下端側の負電極１０２に負集電板１０４を電気
的に接続し、電極巻回体１０１の上端側の正電極１０３
に正集電板１０５を電気的に接続し、この状態の電極巻
回体１０１を外装缶１０７に収納し、負集電板１０４を
外装缶１０７の底部１０８に電気的に接続し、外装缶１
０７に電解液を注入し、正集電板１０５を蓋体１０９に
電気的に接続したものである。FIG. 5 is a sectional view of a conventional electric double layer capacitor. The electric double layer capacitor 100 is configured such that a negative current collector 104 is electrically connected to a negative electrode 102 on a lower end side of an electrode winding body 101, and a positive electrode 103 on an upper end side of the electrode winding body 101.
The negative electrode plate 104 is electrically connected to the bottom 108 of the outer can 107, and the positive current collector 105 is electrically connected to the outer can 107. 1
07, an electrolyte is injected, and the positive current collector 105 is electrically connected to the lid 109.
【０００５】この電気二重層コンデンサ１００は、正集
電板１０５に突起部１０６を形成し、突起部１０６を蓋
体１０９の孔１０９ａに差し込み、突起部１０６と蓋体
１０９とを溶接したものである。突起部１０６を比較的
大径に形成して断面積を大きくした。このため、突起部
１０６に比較的大きな電流を流すことができるので、電
気二重層コンデンサ１００の性能を高めることが可能に
なる。The electric double layer capacitor 100 is formed by forming a projection 106 on a positive current collector 105, inserting the projection 106 into a hole 109 a of a lid 109, and welding the projection 106 and the lid 109. is there. The projection 106 was formed to have a relatively large diameter to increase the sectional area. For this reason, a relatively large current can flow through the protrusion 106, so that the performance of the electric double layer capacitor 100 can be improved.
【０００６】[0006]
【発明が解決しようとする課題】ところで、電気二重層
コンデンサ１００は、負極となる外装缶１０７の底部１
０８から正極となる突起部１０６の先端１０６ａまでの
基準寸法Ｈ１が均一であることが要求される。従って、
電気二重層コンデンサ１００の製造誤差を小さくする必
要がある。このためには、電極巻回体１０１の製造誤差
を小さくして、電極巻回体の高さｈ１を均一に保つ必要
がある。By the way, the electric double-layer capacitor 100 is provided at the bottom 1 of the outer can 107 serving as a negative electrode.
It is required that the reference dimension H1 from 08 to the tip 106a of the projection 106 serving as the positive electrode be uniform. Therefore,
It is necessary to reduce the manufacturing error of the electric double layer capacitor 100. For this purpose, it is necessary to reduce the manufacturing error of the electrode winding body 101 and keep the height h1 of the electrode winding body uniform.
【０００７】しかし、電極巻回体１０１は正電極、負電
極及びセパレータを重ね合わせてロール状に巻回したも
のなので巻回する際にずれが発生しやすく、比較的大き
な製造誤差が生じやすい。このため、電極巻回体１０１
の製造誤差を小さくして、電極巻回体の高さｈ１を均一
に保つためには、高精度の設備が必要があり、高い製造
技術が要求される。この結果、設備費が嵩み電気二重層
コンデンサのコストを抑えることが難しくなる。However, since the electrode winding body 101 is formed by laminating a positive electrode, a negative electrode, and a separator and wound in a roll, a deviation is apt to occur during winding, and a relatively large manufacturing error is likely to occur. For this reason, the electrode winding body 101
In order to reduce the production error of the above and keep the height h1 of the electrode winding body uniform, high-precision equipment is required, and a high production technique is required. As a result, the equipment cost increases, and it becomes difficult to suppress the cost of the electric double layer capacitor.
【０００８】そこで、本発明の目的は、電気二重層コン
デンサのコストを抑えることができる技術を提供するこ
とにある。Accordingly, an object of the present invention is to provide a technique capable of suppressing the cost of an electric double layer capacitor.
【０００９】[0009]
【課題を解決するための手段】上記目的を達成するため
に請求項１の電気二重層コンデンサは、一方の電極及び
他方の電極を重ね合わせてロール状に巻回した電極巻回
体と、この電極巻回体を収納するとともに一方の電極の
一端に電気的に接続する有底筒形の外装缶と、この外装
缶に収納した状態の他方の電極に電気的に接続する集電
板と、前記外装缶を塞ぐ蓋体とからなり、この蓋体の中
央に孔を開けて孔から筒部を延ばし、この筒部から突起
しない範囲で、この筒部に挿入すべく前記集電板から突
起部を突起させ、前記筒部の内周において筒部と前記突
起部とを溶接部で溶接して密封したことを特徴とする。According to a first aspect of the present invention, there is provided an electric double layer capacitor comprising: an electrode wound body in which one electrode and the other electrode are overlapped and wound into a roll; A bottomed cylindrical outer can containing the electrode winding body and electrically connected to one end of one electrode, and a current collector plate electrically connected to the other electrode housed in the outer can, A lid is formed to cover the outer can, a hole is made in the center of the lid, a cylinder is extended from the hole, and a projection is formed from the current collector plate so as to be inserted into the cylinder within a range not protruding from the cylinder. A protrusion is formed, and the cylindrical portion and the protruding portion are welded to each other at the inner periphery of the cylindrical portion by a welded portion and sealed.
【００１０】蓋体に筒部を取り付け、この筒部に挿入可
能な突起部を集電板に突起させた。このため、電極巻回
体に比較的大きな製造誤差が生じても、突起部を筒部か
ら突起させない範囲で移動させることにより、電極巻回
体の製造誤差を吸収することができる。従って、電気二
重層コンデンサの基準寸法を均一に保つことができる。[0010] A cylindrical portion was attached to the lid, and a protruding portion insertable into the cylindrical portion was formed on the current collector plate. Therefore, even if a relatively large manufacturing error occurs in the electrode winding body, the manufacturing error of the electrode winding body can be absorbed by moving the protruding portion within a range not protruding from the cylindrical portion. Therefore, the reference dimensions of the electric double layer capacitor can be kept uniform.
【００１１】[0011]
【発明の実施の形態】本発明の実施の形態を添付図に基
づいて以下に説明する。図１は本発明に係る電気二重層
コンデンサの断面図である。電気二重層コンデンサ１０
は、電気を蓄える電極巻回体１２と、電極巻回体１２の
一方の電極（負電極）１３に電気的に接続した負集電板
２０と、電極巻回体１２の他方の電極（正電極）１６に
電気的に接続した集電板（正集電板）３０と、この状態
の電極巻回体１２を収納する有底筒形の外装缶４０と、
外装缶４０に充填する電解液４３と、外装缶４０を塞ぐ
蓋体４４とからなり、蓋体４４の中央に孔４５を開けて
孔４５から筒部４７を延ばし、筒部４７から突起しない
範囲で、筒部４７に挿入すべく正集電板３０から突起部
３２を突起させ、筒部４７の内周４７ａにおいて筒部４
７と突起部３２とを溶接部５０で溶接して密封したもの
である。Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a sectional view of an electric double layer capacitor according to the present invention. Electric double layer capacitor 10
Is a wound electrode body 12 for storing electricity, a negative current collector 20 electrically connected to one electrode (negative electrode) 13 of the wound electrode body 12, and the other electrode (positive electrode) of the wound electrode body 12. A current collecting plate (normal current collecting plate) 30 electrically connected to the electrode 16, a bottomed cylindrical outer can 40 containing the electrode winding body 12 in this state,
A range consisting of an electrolytic solution 43 to be filled in the outer can 40 and a lid 44 closing the outer can 40, wherein a hole 45 is opened in the center of the lid 44, the cylindrical portion 47 extends from the hole 45, and does not protrude from the cylindrical portion 47. Then, the protruding portion 32 is protruded from the positive current collecting plate 30 to be inserted into the cylindrical portion 47, and the cylindrical portion 4
7 and the projection 32 are welded at the welding portion 50 and sealed.
【００１２】電極巻回体１２は、負電極１３と正電極１
６との間にセパレータ１８を挟むように重ね合わせて、
巻芯１９にロール状に巻回したものである。この電極巻
回体１２は、下端側に負電極１３の一端（アルミ箔下
端）１４ａを突出させ、上端側に正電極１６の他端（ア
ルミ箔上端）１７ａを突出させたものである。The electrode winding body 12 includes a negative electrode 13 and a positive electrode 1.
6 so as to sandwich the separator 18 between them,
It is wound around a core 19 in a roll shape. The electrode winding body 12 has one end (a lower end of the aluminum foil) 14a of the negative electrode 13 protruding from the lower end, and the other end (the upper end of the aluminum foil) 17a of the positive electrode 16 protruding from the upper end.
【００１３】負電極１３は、帯状のアルミ箔１４と、ア
ルミ箔１４の下端１４ａを除いた両面に塗布した活性炭
１５，１５とからなる。正電極１６は、帯状のアルミ箔
１７と、アルミ箔１７の上端１７ａを除いた両面に塗布
した活性炭１５，１５とからなる。セパレータ１８は、
負電極１３と正電極１６とを絶縁するために負電極１３
と正電極１６との間に挟んだ絶縁紙である。The negative electrode 13 comprises a strip-shaped aluminum foil 14 and activated carbons 15, 15 applied to both sides of the aluminum foil 14 except for the lower end 14a. The positive electrode 16 includes a strip-shaped aluminum foil 17 and activated carbons 15 and 15 applied to both sides of the aluminum foil 17 except for the upper end 17a. The separator 18 is
The negative electrode 13 is used to insulate the negative electrode 13 and the positive electrode 16 from each other.
And an insulating paper sandwiched between the positive electrode 16.
【００１４】負集電板２０は、円板２１の中央に突起２
２を形成し、この突起２２から円板２１の外周に向けて
放射状に凸条部２５・・・を延ばしたものである。突起２
２は、円板２１から下向きに大径部２２ａを突出させ、
大径部２２ａから下向きに小径部２２ｂを突出させるこ
とにより段部２３を形成したものである。The negative current collecting plate 20 has a projection 2 at the center of the disk 21.
2 are formed, and ridges 25 are radially extended from the projections 22 toward the outer periphery of the disk 21. Protrusion 2
2 makes the large-diameter portion 22a protrude downward from the disk 21,
The step portion 23 is formed by projecting the small diameter portion 22b downward from the large diameter portion 22a.
【００１５】凸条部２５は、円板２１の中央から外周に
向って凸条部２５の高さが徐々に高くなるようにテーパ
状に形成したものである。このため、負電極１３のアル
ミ箔下端１４ａに負集電板２０を押し付けることによ
り、凸条部２５・・・で負電極１３のアルミ箔下端１４ａ
を内側に折り曲げることができる。この結果、凸条部２
５・・・と負電極１３との接触面積を大きくすることがで
きるので、比較的大きな電流を流すことができる。The ridge 25 is formed in a tapered shape so that the height of the ridge 25 gradually increases from the center to the outer periphery of the disk 21. Therefore, by pressing the negative current collector plate 20 against the aluminum foil lower end 14 a of the negative electrode 13, the convex portion 25.
Can be folded inward. As a result, the ridges 2
5 and the negative electrode 13 can have a large contact area, so that a relatively large current can flow.
【００１６】正集電板３０は、円板３１の中央に突起部
３２を形成し、この突起部３２から円板３１の外周に向
って放射状に凸条部３５を延ばしたものである。突起部
３２は、正集電板３０の中央に筒状に形成し、開口３２
ａを安全弁３７で塞いだものである。The normal current collecting plate 30 is formed by forming a projection 32 at the center of the disk 31 and extending the ridge 35 radially from the projection 32 toward the outer periphery of the disk 31. The protruding portion 32 is formed in a cylindrical shape at the center of the positive current collecting plate 30, and has an opening 32.
a is closed with a safety valve 37.
【００１７】凸条部３５は、円板３１の中央から外周に
向って凸条部３５の高さが徐々に高くなるようにテーパ
状に形成したものである。このため、正電極１６のアル
ミ箔上端１７ａに正集電板３０を押し付けることによ
り、凸条部３５・・・で正電極１６のアルミ箔上端１７ａ
を内側に折り曲げることができる。この結果、凸条部３
５と正電極１６との接触面積を大きくすることができる
ので、比較的大きな電流を流すことができる。The ridge 35 is formed in a tapered shape so that the height of the ridge 35 gradually increases from the center of the disk 31 toward the outer periphery. Therefore, by pressing the positive current collector 30 against the upper end 17a of the aluminum foil of the positive electrode 16, the upper end 17 a of the aluminum foil of the positive electrode 16 is formed by the ridges 35.
Can be folded inward. As a result, the ridges 3
Since the contact area between the electrode 5 and the positive electrode 16 can be increased, a relatively large current can flow.
【００１８】外装缶４０は、導電性材料で有底筒形に形
成したもので、底部４１の中央に孔４１ａを形成し、底
部４１の反対側に開口４２を形成した収納ケースであ
る。底部４１の孔４１ａに負集電板２０の突起２２の小
径部２２ｂを差し込むことにより、底部４１に段部２３
を接触することができるので、底部４１と負集電板２０
との接触面積が大きくなり比較的大きな電流を流すこと
ができる。The outer can 40 is a storage case formed of a conductive material in the shape of a cylinder with a bottom and having a hole 41a formed in the center of the bottom 41 and an opening 42 formed on the opposite side of the bottom 41. By inserting the small-diameter portion 22b of the projection 22 of the negative current collector 20 into the hole 41a of the bottom 41, the step portion 23 is formed in the bottom 41.
Can be contacted, so that the bottom 41 and the negative current collector 20
The contact area with the contact is increased, and a relatively large current can flow.
【００１９】蓋体４４は、外側のリング４６及び中央の
筒部４７を各々導電性部材で形成し、リング４６と筒部
４７とを絶縁性のリング４９で一体につないだものであ
って、リング４６を外装缶４０の開口４２に溶接するこ
とにより外装缶４０を塞ぐものである。リング４６を外
装缶４０の開口４２に溶接することにより、加締めによ
る取り付けと比較して蓋体４４を外装缶４０により強固
に取り付けることができる。The lid 44 is formed by forming an outer ring 46 and a central tubular portion 47 with conductive members, respectively, and connecting the ring 46 and the tubular portion 47 integrally with an insulating ring 49. The outer can 40 is closed by welding the ring 46 to the opening 42 of the outer can 40. By welding the ring 46 to the opening 42 of the outer can 40, the lid body 44 can be more firmly attached to the outer can 40 as compared to the case of caulking.
【００２０】筒部４７は、正集電板３０の突起部３２を
挿入させる挿入孔４８を形成し、突起部３２をスライド
させることにより、例えば電極巻回体１２の製造誤差を
吸収する部材である。なお、筒部４７と突起部３２との
関係については以下に詳しく説明する。The cylindrical portion 47 is a member which forms an insertion hole 48 for inserting the projection 32 of the positive current collector 30 and slides the projection 32, for example, to absorb a manufacturing error of the electrode winding body 12. is there. The relationship between the cylindrical portion 47 and the projection 32 will be described in detail below.
【００２１】図２（ａ），（ｂ）は本発明に係る電気二
重層コンデンサの第１作用説明図である。（ａ）におい
て、電極巻回体１２をロール状に巻回した後、負電極１
３のアルミ箔下端１４ａに負集電板２０を取り付け、か
つ正電極１６のアルミ箔上端１７ａに正集電板３０を取
り付ける。次に、この状態の電極巻回体１２を外装缶４
０に開口４２から収納して、負集電板２０の小径部２２
ｂを矢印の如く外装缶４０の孔４１ａに差し込む。FIGS. 2 (a) and 2 (b) are diagrams for explaining a first operation of the electric double layer capacitor according to the present invention. In (a), after winding the electrode winding body 12 in a roll shape, the negative electrode 1
The negative current collector 20 is attached to the lower end 14a of the aluminum foil 3 and the positive current collector 30 is attached to the upper end 17a of the aluminum foil of the positive electrode 16. Next, the electrode winding body 12 in this state is attached to the outer can 4.
0 from the opening 42 and the small-diameter portion 22 of the negative current collector 20.
b is inserted into the hole 41a of the outer can 40 as shown by the arrow.
【００２２】（ｂ）において、外装缶４０の上方から蓋
体４４を矢印の如く被せて、蓋体４４で外装缶４０の
開口４２を塞ぐ。同時に、正集電板３０の突起部３２に
筒部４７の挿入孔４８を嵌め込む。In (b), the cover 44 is covered from above the outer can 40 as shown by the arrow, and the opening 42 of the outer can 40 is closed by the cover 44. At the same time, the insertion hole 48 of the cylindrical portion 47 is fitted into the projection 32 of the positive current collecting plate 30.
【００２３】図３（ａ），（ｂ）は本発明に係る電気二
重層コンデンサの第２作用説明図であり、（ａ）は電極
巻回体の製造誤差が最小の状態を示し、（ｂ）は電極巻
回体の製造誤差が最大の状態を示す。（ａ）において、
電極巻回体の製造誤差が最小のとき、図２（ｂ）に示す
電極巻回体１２の寸法ｈが最小値になる。従って、正集
電板３０の突起部３２に筒部４７の挿入孔４８を嵌め込
むと、突起部３２の上端３２ａは筒部４７の挿入孔４８
から僅かに突起した状態（すなわち、突起部３２の上端
３２ａは筒部４７の上端４７ｂから充分に下側に入り込
んだ状態）になる。FIGS. 3 (a) and 3 (b) are explanatory diagrams of a second operation of the electric double layer capacitor according to the present invention, wherein FIG. 3 (a) shows a state where the manufacturing error of the wound electrode body is minimized, and FIG. ) Indicates a state where the manufacturing error of the wound electrode body is maximum. In (a),
When the manufacturing error of the electrode winding body is the minimum, the dimension h of the electrode winding body 12 shown in FIG. Therefore, when the insertion hole 48 of the cylindrical portion 47 is fitted into the projection 32 of the normal current collecting plate 30, the upper end 32 a of the projection 32 is inserted into the insertion hole 48 of the cylindrical portion 47.
From above (that is, a state in which the upper end 32a of the protruding portion 32 has sufficiently entered the lower side from the upper end 47b of the cylindrical portion 47).
【００２４】（ｂ）において、電極巻回体の製造誤差が
最大のとき、図２（ｂ）に示す電極巻回体１２の寸法ｈ
が最大値になる。従って、正集電板３０の突起部３２に
筒部４７の挿入孔４８を嵌め込むと、突起部３２の上端
３２ａは筒部４７の上端４７ｂ近傍まで入り込んだ状態
になる。従って、（ｂ）に示す突起部３２の上端３２ａ
は、（ａ）に示す突起部３２の上端３２ａよりΔｈ高い
位置にある。In FIG. 2B, when the manufacturing error of the electrode winding body is maximum, the dimension h of the electrode winding body 12 shown in FIG.
Becomes the maximum value. Therefore, when the insertion hole 48 of the cylindrical portion 47 is fitted into the projection 32 of the positive current collecting plate 30, the upper end 32 a of the projection 32 enters the vicinity of the upper end 47 b of the cylindrical portion 47. Therefore, the upper end 32a of the projection 32 shown in FIG.
Is located Δh higher than the upper end 32 a of the projection 32 shown in FIG.
【００２５】すなわち、電極巻回体の製造誤差がΔｈの
範囲であれば、突起部３２は筒部４７から突起しないの
で、電極巻回体の製造誤差を吸収することができる。従
って、図２（ｂ）に示す電極巻回体１２の製造誤差をΔ
ｈまで許容することができる。That is, if the manufacturing error of the electrode winding body is in the range of Δh, the projection 32 does not project from the cylindrical portion 47, so that the manufacturing error of the electrode winding body can be absorbed. Therefore, the manufacturing error of the electrode winding body 12 shown in FIG.
h.
【００２６】図４は本発明に係る電気二重層コンデンサ
の第３作用説明図である。先ず、外装缶４０の開口４２
と蓋体４４のリング４６とを溶接して開口４２を密封す
る。次に、外装缶４０の底部４１と負集電板２０の小径
部２２ｂとを溶接して孔４１ａを密封する。次いで、筒
部４７の内周４７ａにおいて、筒部４７と突起部３２と
を溶接して溶接部５０とする。FIG. 4 is an explanatory view of the third operation of the electric double layer capacitor according to the present invention. First, the opening 42 of the outer can 40
And the ring 46 of the lid 44 are welded to seal the opening 42. Next, the bottom 41 of the outer can 40 and the small diameter portion 22b of the negative current collector 20 are welded to seal the hole 41a. Next, on the inner periphery 47 a of the cylindrical portion 47, the cylindrical portion 47 and the projection 32 are welded to form a welded portion 50.
【００２７】電気二重層コンデンサ１０の基準寸法Ｈ
を、外装缶４０の底部４１から筒部４７の上端４７ｂま
での寸法で設定したので、突起部３２を筒部４７から突
起させなければ基準寸法Ｈを均一に保つことができる。
従って、電極巻回体１２に製造誤差が生じても、突起部
３２を筒部４７内で移動させることにより、電極巻回体
１２の製造誤差を吸収することができる。この結果、電
極巻回体１２を製造するときに、比較的大きな製造誤差
（Δｈ（図３に示す））を許容することができるので製
造が容易になる。Reference dimension H of electric double layer capacitor 10
Is set from the bottom 41 of the outer can 40 to the upper end 47b of the cylinder 47, so that the reference dimension H can be kept uniform unless the projection 32 projects from the cylinder 47.
Therefore, even if a manufacturing error occurs in the electrode winding body 12, the manufacturing error of the electrode winding body 12 can be absorbed by moving the protrusion 32 within the cylindrical portion 47. As a result, when the electrode winding body 12 is manufactured, a relatively large manufacturing error (Δh (shown in FIG. 3)) can be allowed, so that the manufacturing becomes easy.
【００２８】また、外装缶４０の孔４１ａに負集電板２
０の小径部２２ｂを差し込んで外装缶４０と小径部２２
ｂを溶接した。加えて、正集電板３０の突起部３２を蓋
体４４の筒部４７に挿入して、突起部３２と筒部４７と
を溶接した。このため、電極巻回体１２の下端を外装缶
４０に強固に取り付け、かつ電極巻回体１２の上端を蓋
体４４に強固に取り付けることができる。この結果、電
気二重層コンデンサ１０の耐震性をより高めることがで
きる。The negative current collector plate 2 is inserted into the hole 41a of the outer can 40.
0 small-diameter portion 22b is inserted into outer can 40 and small-diameter portion 22.
b was welded. In addition, the projection 32 of the positive current collector 30 was inserted into the cylinder 47 of the lid 44, and the projection 32 and the cylinder 47 were welded. Therefore, the lower end of the electrode winding body 12 can be firmly attached to the outer can 40, and the upper end of the electrode winding body 12 can be firmly attached to the lid 44. As a result, the earthquake resistance of the electric double layer capacitor 10 can be further improved.
【００２９】さらに、負集電板２０に突起２２を形成
し、突起２２の小径部２２ｂを外装缶４０の孔４１ａに
差し込んで、外装缶４０と小径部２２ｂを溶接した。こ
のため、外装缶４０と小径部２２ｂとの接触面積を比較
的大きく設定することができる。加えて、正集電板３０
に突起部３２を形成し、突起部３２を蓋体４４の筒部４
７に挿入して突起部３２と筒部４７とを溶接した。この
ため、突起部３２と筒部４７との接触面積を比較的大き
く設定することができる。この結果、各々の接触部に比
較的大きな電流を流すことができる。Further, the projection 22 was formed on the negative current collector plate 20, and the small-diameter portion 22b of the projection 22 was inserted into the hole 41a of the outer can 40, and the outer can 40 and the small-diameter portion 22b were welded. For this reason, the contact area between the outer can 40 and the small diameter portion 22b can be set relatively large. In addition, the positive current collector 30
The projection 32 is formed on the cylindrical portion 4 of the lid 44.
7 and the projection 32 and the cylinder 47 were welded. For this reason, the contact area between the protrusion 32 and the cylinder 47 can be set relatively large. As a result, a relatively large current can flow through each contact portion.
【００３０】なお、前記実施の形態では、電極巻回体１
２の負電極１３を外装缶４０の底部４１に電気的に接続
し、正電極１６を蓋体４４に電気的に接続した例を説明
したが、これに限らないで、電極巻回体１２の正極と負
極とを逆にしてもよい。また、外装缶４０の底部４１に
孔４１ａを形成し、この孔４１ａに負集電板２０の突起
２２（小径部２２ｂ）を差し込んだ例を説明したが、こ
れに限らないで、外装缶４０の底部４１に負集電板２０
の突起２２を差し込まなくてもよい。In the above embodiment, the electrode winding body 1
The example in which the second negative electrode 13 is electrically connected to the bottom 41 of the outer can 40 and the positive electrode 16 is electrically connected to the lid 44 has been described, but the present invention is not limited to this. The positive electrode and the negative electrode may be reversed. Also, an example has been described in which a hole 41a is formed in the bottom portion 41 of the outer can 40, and the projection 22 (small diameter portion 22b) of the negative current collector 20 is inserted into the hole 41a. Collector plate 20 on the bottom 41
It is not necessary to insert the projection 22 of.
【００３１】[0031]
【発明の効果】本発明は上記構成により次の効果を発揮
する。請求項１は、蓋体に筒部を取り付けるとともに集
電板から突起部を突起させ、筒部から突起しない範囲で
突起部を筒部に挿入させた。このため、電極巻回体を巻
回する際に比較的大きな製造誤差が生じても、突起部を
筒部から突起させない範囲で移動することができる。According to the present invention, the following effects are exhibited by the above configuration. In the first aspect, the tubular portion is attached to the lid, and the projecting portion is projected from the current collector plate, and the projected portion is inserted into the tubular portion within a range not projecting from the tubular portion. For this reason, even if a relatively large manufacturing error occurs when winding the electrode winding body, it is possible to move the protrusion within a range in which the protrusion does not protrude from the cylindrical portion.
【００３２】従って、電極巻回体を巻回する際に比較的
大きな製造誤差が生じても、この製造誤差を筒部で吸収
することができ、電気二重層コンデンサの基準寸法を均
一に保つことができる。この結果、電極巻回体を巻回す
る際に、ある程度の製造誤差を許容することができるの
で、電気二重層コンデンサのコストを抑えることができ
る。Therefore, even if a relatively large manufacturing error occurs when winding the electrode winding body, the manufacturing error can be absorbed by the cylindrical portion, and the reference size of the electric double layer capacitor can be kept uniform. Can be. As a result, when winding the electrode winding body, a certain manufacturing error can be allowed, so that the cost of the electric double layer capacitor can be suppressed.
【図１】本発明に係る電気二重層コンデンサの断面図FIG. 1 is a sectional view of an electric double layer capacitor according to the present invention.
【図２】本発明に係る電気二重層コンデンサの第１作用
説明図FIG. 2 is a diagram illustrating a first operation of the electric double layer capacitor according to the present invention.
【図３】本発明に係る電気二重層コンデンサの第２作用
説明図FIG. 3 is a diagram illustrating a second operation of the electric double layer capacitor according to the present invention.
【図４】本発明に係る電気二重層コンデンサの第３作用
説明図FIG. 4 is a diagram illustrating a third operation of the electric double layer capacitor according to the present invention.
【図５】従来の電気二重層コンデンサの断面図FIG. 5 is a sectional view of a conventional electric double layer capacitor.
１０…電気二重層コンデンサ、１２…電極巻回体、１３
…一方の電極（負電極）、１４ａ…一方の電極の一端
（アルミ箔下端）、１６…他方の電極（正電極）、３０
…集電板（正集電板）、３２…突起部、４０…外装缶、
４３…孔、４４…蓋体、４７…筒部、４７ａ…内周、５
０…溶接部。DESCRIPTION OF SYMBOLS 10 ... Electric double layer capacitor, 12 ... Wound electrode body, 13
... One electrode (negative electrode), 14a ... One end of one electrode (lower end of aluminum foil), 16 ... The other electrode (positive electrode), 30
... current collector plate (normal current collector plate), 32 ... protrusion, 40 ... outer can,
43 ... hole, 44 ... lid, 47 ... cylinder, 47a ... inner circumference, 5
0: welded part.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 正法地 友一 埼玉県和光市中央１丁目４番１号 株式会 社本田技術研究所内 (72)発明者 澁谷 健太郎 埼玉県和光市中央１丁目４番１号 株式会 社本田技術研究所内 (72)発明者 山本 善夫 埼玉県和光市中央１丁目４番１号 株式会 社本田技術研究所内 Ｆターム(参考） 5H011 AA00 AA09 CC06 DD07 DD13 5H028 AA01 AA07 BB01 BB05 BB07 CC05 CC24 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Tomokazu Tomoichi 1-4-1 Chuo, Wako-shi, Saitama Pref. Inside Honda R & D Co., Ltd. (72) Inventor Kentaro Shibuya 1-4-4 Chuo, Wako-shi, Saitama No. 1 Inside Honda R & D Co., Ltd. (72) Inventor Yoshio Yamamoto 1-4-1 Chuo, Wako-shi, Saitama F-term inside Honda R & D Co., Ltd. 5H011 AA00 AA09 CC06 DD07 DD13 5H028 AA01 AA07 BB01 BB05 BB07 CC05 CC24
Claims (1)
てロール状に巻回した電極巻回体と、 この電極巻回体を収納するとともに一方の電極の一端に
電気的に接続する有底筒形の外装缶と、 この外装缶に収納した状態の他方の電極に電気的に接続
する集電板と、 前記外装缶を塞ぐ蓋体とからなり、 この蓋体の中央に孔を開けてこの孔から筒部を延ばし、
この筒部から突起しない範囲で、この筒部に挿入すべく
前記集電板から突起部を突起させ、前記筒部の内周にお
いて筒部と前記突起部とを溶接部で溶接して密封したこ
とを特徴とする電気二重層コンデンサ。1. An electrode wound body in which one electrode and the other electrode are overlapped and wound in a roll shape, and a bottomed bottom housing the electrode wound body and electrically connected to one end of one of the electrodes. A cylindrical outer can, a current collecting plate electrically connected to the other electrode housed in the outer can, and a lid for closing the outer can. Extend the cylinder from this hole,
In a range not protruding from the cylindrical portion, a protruding portion was protruded from the current collector plate so as to be inserted into the cylindrical portion, and the cylindrical portion and the protruding portion were sealed by welding at the inner periphery of the cylindrical portion by welding. An electric double-layer capacitor characterized by the above-mentioned.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11235810A JP2001060534A (en) | 1999-08-23 | 1999-08-23 | Electric double-layer capacitor |
| US09/643,975 US6456484B1 (en) | 1999-08-23 | 2000-08-22 | Electric double layer capacitor |
| DE10041369A DE10041369B4 (en) | 1999-08-23 | 2000-08-23 | Electric double layer capacitor |
| US10/214,214 US6603653B2 (en) | 1999-08-23 | 2002-08-06 | Electric double layer capacitor |
| US10/214,254 US6552894B2 (en) | 1999-08-23 | 2002-08-06 | Electric double layer capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11235810A JP2001060534A (en) | 1999-08-23 | 1999-08-23 | Electric double-layer capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001060534A true JP2001060534A (en) | 2001-03-06 |
Family
ID=16991599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11235810A Pending JP2001060534A (en) | 1999-08-23 | 1999-08-23 | Electric double-layer capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001060534A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100612396B1 (en) | 2005-03-08 | 2006-08-16 | 삼성에스디아이 주식회사 | Secondary battery |
| KR100858808B1 (en) * | 2002-09-10 | 2008-09-17 | 삼성에스디아이 주식회사 | Rectangular- type secondary battery and battery package therewith |
| CN103219478A (en) * | 2013-03-28 | 2013-07-24 | 凯迈嘉华（洛阳）新能源有限公司 | Energy storage device |
| EP3246928A4 (en) * | 2015-01-15 | 2018-08-22 | Ls Mtron Ltd. | External terminal, having structure for preventing leakage of electrolyte, for electric energy storage device |
| JP2019517156A (en) * | 2016-05-26 | 2019-06-20 | オーユー スケルトン テクノロジーズ グループ | Carbon / carbon integrated high power density ultracapacitor, and battery comprising the capacitor |
| EP1451836B1 (en) * | 2001-11-02 | 2020-03-25 | Maxwell Technologies, Inc. | Electrochemical double layer capacitor having carbon powder electrodes |
-
1999
- 1999-08-23 JP JP11235810A patent/JP2001060534A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1451836B1 (en) * | 2001-11-02 | 2020-03-25 | Maxwell Technologies, Inc. | Electrochemical double layer capacitor having carbon powder electrodes |
| KR100858808B1 (en) * | 2002-09-10 | 2008-09-17 | 삼성에스디아이 주식회사 | Rectangular- type secondary battery and battery package therewith |
| KR100612396B1 (en) | 2005-03-08 | 2006-08-16 | 삼성에스디아이 주식회사 | Secondary battery |
| CN103219478A (en) * | 2013-03-28 | 2013-07-24 | 凯迈嘉华（洛阳）新能源有限公司 | Energy storage device |
| CN103219478B (en) * | 2013-03-28 | 2015-05-20 | 凯迈嘉华（洛阳）新能源有限公司 | Energy storage device |
| EP3246928A4 (en) * | 2015-01-15 | 2018-08-22 | Ls Mtron Ltd. | External terminal, having structure for preventing leakage of electrolyte, for electric energy storage device |
| US10074488B2 (en) | 2015-01-15 | 2018-09-11 | Ls Mtron Ltd. | External terminal, having structure for preventing leakage of electrolyte, for electric energy storage device |
| JP2019517156A (en) * | 2016-05-26 | 2019-06-20 | オーユー スケルトン テクノロジーズ グループ | Carbon / carbon integrated high power density ultracapacitor, and battery comprising the capacitor |
| CN110121758A (en) * | 2016-05-26 | 2019-08-13 | 澳骨架技术集团公司 | Integrated carbon/carbon supercapacitor of high power density and the battery being made of the capacitor |
| JP7065040B2 (en) | 2016-05-26 | 2022-05-11 | オーユー スケルトン テクノロジーズ グループ | Carbon / carbon integrated high power density ultracapacitor and battery consisting of the capacitor |
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