CA2028887C - Electrical double-layer capacitor - Google Patents
Electrical double-layer capacitorInfo
- Publication number
- CA2028887C CA2028887C CA002028887A CA2028887A CA2028887C CA 2028887 C CA2028887 C CA 2028887C CA 002028887 A CA002028887 A CA 002028887A CA 2028887 A CA2028887 A CA 2028887A CA 2028887 C CA2028887 C CA 2028887C
- Authority
- CA
- Canada
- Prior art keywords
- layer capacitor
- electrical double
- electrodes
- outside
- contact
- 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.)
- Expired - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
-
- 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
- H01G11/14—Arrangements or processes for adjusting or protecting hybrid or EDL capacitors
-
- 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
- H01G11/22—Electrodes
- H01G11/26—Electrodes characterised by their structure, e.g. multi-layered, porosity or surface features
-
- 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
-
- 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
- H01G11/82—Fixing or assembling a capacitive element in a housing, e.g. mounting electrodes, current collectors or terminals in containers or encapsulations
-
- 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
A B S T R A C T
A gasket (4) or collecting electrodes (1) are used as members for separating the inside from the outside of an electrical double-layer capacitor and small holes (5) are provided therein through which the internal air is drawn. Thus the internal pressure becomes lower than the atmospheric pressure and the pressure difference is generated between the inside and the outside.
Due to this pressure difference, collecting electrodes (1) are pressed to solid polarizing electrodes (2). Hence the resistance in the contacts between the collecting electrodes and the solid polarizing electrodes can be reduced. Since the contact force is obtained by the pressure difference between the inside and the outside, the contact force is applied equally to every part of the contacts. As a result, there is no contact where its contact resistance is not reduced.
Further, there is no need of provision of any device for generating the contact force outside the electrical double-layer capacitor.
A gasket (4) or collecting electrodes (1) are used as members for separating the inside from the outside of an electrical double-layer capacitor and small holes (5) are provided therein through which the internal air is drawn. Thus the internal pressure becomes lower than the atmospheric pressure and the pressure difference is generated between the inside and the outside.
Due to this pressure difference, collecting electrodes (1) are pressed to solid polarizing electrodes (2). Hence the resistance in the contacts between the collecting electrodes and the solid polarizing electrodes can be reduced. Since the contact force is obtained by the pressure difference between the inside and the outside, the contact force is applied equally to every part of the contacts. As a result, there is no contact where its contact resistance is not reduced.
Further, there is no need of provision of any device for generating the contact force outside the electrical double-layer capacitor.
Description
2~28887 D E S C R I P T I O N
1. Title of the Invention ELECTRICAL DOUBLE-LAYER CAPACITOR
2. Technical Field The present invention relates to an electrical double-layer capacitor having a reduced internal resistance.
1. Title of the Invention ELECTRICAL DOUBLE-LAYER CAPACITOR
2. Technical Field The present invention relates to an electrical double-layer capacitor having a reduced internal resistance.
3. Background Art In electrical douhle-layer capacitors, there is one using paste-like polarizing electrodes obtained by mixing activated carbon particles with electrolyte (dilute sulfuric acid, for example) for its polarizing electrodes, and there is also one using a solid polarizing electrode made of activated carbon solidified by baking or sintering and impregnated with electrolyte Fig. 2 is a view showing a conventional electrical double-layer capacitor using such solid polarizing electrode. In Fig. 2.
numeral 1 denotes collecting electrodes, 2 solid polarizing electrodes, 3 is a separator, and 4 is a gasket.
For the collecting electrodes 1, conductive rubber is used.
for example. The separator 3 has property that it allows ions to ~02g~
pass therethrough but not electrons, and a porous plastic. for example, is used therefor. The gasket 4 is provided to insulate the solid polarizing electrodes 2 from its surrounding members, and insulating rubber, for example, is used therefor.
Fig. 3 is a sectional plan view taken along line X-X of jig.
2 showing the conventional double-layer capacitor. The reference marks correspond to those shown in Fig. 3.
This example has a structure that a plurality of solid polarizing electrodes 2 face each other across the separator 3, and the collecting electrodes 1 are disposed in contact with the outer surfaces of the solid polarizing electrodes 2.
Subsequently each of the solid polarizing electrodes 2 is impregnated with electrolyte and the spaces between them are filled with the remainder of the electrolyte for impregnation.
The solid polarizing electrodes have a bulk density (grams per 1 cm3) of activated carbon particles (0.5 0,7 g/cm3~ greater than those of paste-like polarizing electrodes. Hence its capacitance is greater. The solid polarizing electrode is easier to handle because of its solidity, having advantages such as a high operativity in manufacturing.
An electrical double-layer capacitor, such as this, has an internal resistance due to the resistance existing in parts where the collecting electrodes 1 are in contact with the solid polarizing electrodes 2, and the resistance of the solid polarizing electrodes 2 themselves. It is desirable for a 2028~187 capacitor to have its internal resistance as small as possible.
However, as far as the solid polarizing electrodes 2 are employed, the resistance that the solid polarizing electrodes 2 themselves possess must be accepted.
Therefore, in order to reduce the internal resistance, it is necessary to minimize the resistance in the above parts.
Thersfore, tbe contacts between the collecting electrodes 1 and the solid polarizing electrodes 2 should be improved by application of pressure using a mechanical force exerted from the outside of the collecting electrodes 1 (from both the top and bottom thereof in Pig. 2) by caulking the edge of a petal casing (not shown, or by another method.
As a literature regarding an electrical double-layer capacitor using solid polarizing electrodes, JApanese Patent Publlcation No. ~4100/1979 is an example.
(Problems) However, there are encountered the followin8 problems in the conventional electrical double-layer capacitors.
The first problem is that the contact resistance of some con ventional electrical double-layer capacitors cannot be reduced sufficiently.
The second problem is that a means for generating a mechanic al force must be arranged on the outside of the electrical double-layer capacitor and its size is accordingly larger.
(Description of the Problems) 2~28~8~
Since the second problem is self-explanatory, only the first problem will subsequently be described.
In the case of the pressure applied from outside by a mechanical force, there are inevitably variations in the pressure applied to each solid polarizing electrode 2 due to the dimensional deviations (slight difference in height, for example) of each of the solid polarizing electrodes 2 or due to the difference in distance from the point where the pressure is applied. Ilence, in some cases, the contact resistance cannot be reduced sufficiently.
The subiect of the present invention is to solve these problems.
numeral 1 denotes collecting electrodes, 2 solid polarizing electrodes, 3 is a separator, and 4 is a gasket.
For the collecting electrodes 1, conductive rubber is used.
for example. The separator 3 has property that it allows ions to ~02g~
pass therethrough but not electrons, and a porous plastic. for example, is used therefor. The gasket 4 is provided to insulate the solid polarizing electrodes 2 from its surrounding members, and insulating rubber, for example, is used therefor.
Fig. 3 is a sectional plan view taken along line X-X of jig.
2 showing the conventional double-layer capacitor. The reference marks correspond to those shown in Fig. 3.
This example has a structure that a plurality of solid polarizing electrodes 2 face each other across the separator 3, and the collecting electrodes 1 are disposed in contact with the outer surfaces of the solid polarizing electrodes 2.
Subsequently each of the solid polarizing electrodes 2 is impregnated with electrolyte and the spaces between them are filled with the remainder of the electrolyte for impregnation.
The solid polarizing electrodes have a bulk density (grams per 1 cm3) of activated carbon particles (0.5 0,7 g/cm3~ greater than those of paste-like polarizing electrodes. Hence its capacitance is greater. The solid polarizing electrode is easier to handle because of its solidity, having advantages such as a high operativity in manufacturing.
An electrical double-layer capacitor, such as this, has an internal resistance due to the resistance existing in parts where the collecting electrodes 1 are in contact with the solid polarizing electrodes 2, and the resistance of the solid polarizing electrodes 2 themselves. It is desirable for a 2028~187 capacitor to have its internal resistance as small as possible.
However, as far as the solid polarizing electrodes 2 are employed, the resistance that the solid polarizing electrodes 2 themselves possess must be accepted.
Therefore, in order to reduce the internal resistance, it is necessary to minimize the resistance in the above parts.
Thersfore, tbe contacts between the collecting electrodes 1 and the solid polarizing electrodes 2 should be improved by application of pressure using a mechanical force exerted from the outside of the collecting electrodes 1 (from both the top and bottom thereof in Pig. 2) by caulking the edge of a petal casing (not shown, or by another method.
As a literature regarding an electrical double-layer capacitor using solid polarizing electrodes, JApanese Patent Publlcation No. ~4100/1979 is an example.
(Problems) However, there are encountered the followin8 problems in the conventional electrical double-layer capacitors.
The first problem is that the contact resistance of some con ventional electrical double-layer capacitors cannot be reduced sufficiently.
The second problem is that a means for generating a mechanic al force must be arranged on the outside of the electrical double-layer capacitor and its size is accordingly larger.
(Description of the Problems) 2~28~8~
Since the second problem is self-explanatory, only the first problem will subsequently be described.
In the case of the pressure applied from outside by a mechanical force, there are inevitably variations in the pressure applied to each solid polarizing electrode 2 due to the dimensional deviations (slight difference in height, for example) of each of the solid polarizing electrodes 2 or due to the difference in distance from the point where the pressure is applied. Ilence, in some cases, the contact resistance cannot be reduced sufficiently.
The subiect of the present invention is to solve these problems.
4. Disclosure of Invention The object of the present invention is to make it possible to apply a sufficient contact force to every part where the collecting electrodes and the solid polarizing electrodes are in contact with each other without externary installing a device for applying a mechanical force to the electrical double-layer capacitor.
With a view to achieving such purpose, the present invention provides an electrical double-layer capacitor wherein members for separating the interior and the exterior apart are provided with small holes which can be sealed after the internal air is drawn.
2028~87 These and other objects of the invention will become more apparent in the detailed description and examples which follow.
With a view to achieving such purpose, the present invention provides an electrical double-layer capacitor wherein members for separating the interior and the exterior apart are provided with small holes which can be sealed after the internal air is drawn.
2028~87 These and other objects of the invention will become more apparent in the detailed description and examples which follow.
5. Brief Descriotion of the Drawings ig. 1 ... an electrical double-layer capacitor of ao embodiment according to the present invention.
Fig. 2 ... a conventional electrical double-layer capacitor.
jig. 3 ... a sectional plan view of the conventional electrical double-layer capacitor.
. Best Mode of Carrying Out the Invention With reference to the accompanying drawings, an embodiment according to the present invention will subsequently be described.
Fig. 1 is a view showing an embodiment of an electrical double-layer capacitor according to the present invention. The reference marks correspond to those shown in Pig. 2, and a mark lA denotes dents and 5, small holes.
The small holes 5 are through holes provided from the outside of the gasket 4 to the inside. One of small holes 5 is above the separator 3 and the other below the same. In other words, this embodiment selects the gasket 4 as a member for separating the inside of the electrical double-layer capacitor from the outside thereof, in which the small holes 5 are provided respectively.
~028~g~
After forming the electrical double-layer capacitor by combining the collecting electrodes 1, the solid polarizing electrodes 2, the separator 3, and the gasket 4, a thin pipe such as an injection needle is inserted into the small holes 5 to draw the internal air. The small holes 5 is filled in with rubber adhesive for sealing.
When the air is exhausted, the collecting electrodes 1 are strongly pressed to the solid polarizing electrodes 2 due to the pressure difference generated between the inside of the capacitor and the outside. The parts of the collecting electrodes 1 between the solid polarizing electrodes 2 are the dents lA. The dents are formed because of the pressure difference.
Since the pressure difference between the inside and the outside is equally applied to every contact, the contact resistance can be reduced equally in each of the contacts. In other words, there is no contact where such reduction is insufficient as compared with that in other contacts.
The small holes 5 are arranged abov0 and below the separator 3 respectively because such an arrangement of one small hole for drawing the air between the upper collecting electrode 1 and the separator 3 and the other one for drawing the air between the lower collecting electrode 1 and the separator 3 respectively enable the air to be drawn more quickly.
In this respect, it is possible to impregnate the solid polarizing electrodes 2 with electrolyte by injecting it through 2~2~8~
the small holes 5 after the air is drawn. In this way, the electrolyte can be impregnated quickly and completely in every part of the solid polari2ing electrodes 2. Consequently the operativity in manufacturing can be improved and at the same time the performance is upgraded.
In the above example, although the gasket 4 provided with small holes 5 is selected as members for separating the inside from the outside (of the electrical double-layer capacitor)r, the collecting electrodes 1 can be used as such members.
According to the present invention, there is no need of any device provided outside the electrical double-layer capacitor to apply a mechanical force because the draw of the internal air from the electrical double-layer capacitor enables the contact force to be generated.
Although the invention has been described in its prefered form with a certain degree of particularity, it is understood that the present disclosure of the preferred form has been changed in the details of construction and the combination and arrangement of parts may be resorted to without departing from the spirit and the scope of the invention as hereinafter claimed.
Fig. 2 ... a conventional electrical double-layer capacitor.
jig. 3 ... a sectional plan view of the conventional electrical double-layer capacitor.
. Best Mode of Carrying Out the Invention With reference to the accompanying drawings, an embodiment according to the present invention will subsequently be described.
Fig. 1 is a view showing an embodiment of an electrical double-layer capacitor according to the present invention. The reference marks correspond to those shown in Pig. 2, and a mark lA denotes dents and 5, small holes.
The small holes 5 are through holes provided from the outside of the gasket 4 to the inside. One of small holes 5 is above the separator 3 and the other below the same. In other words, this embodiment selects the gasket 4 as a member for separating the inside of the electrical double-layer capacitor from the outside thereof, in which the small holes 5 are provided respectively.
~028~g~
After forming the electrical double-layer capacitor by combining the collecting electrodes 1, the solid polarizing electrodes 2, the separator 3, and the gasket 4, a thin pipe such as an injection needle is inserted into the small holes 5 to draw the internal air. The small holes 5 is filled in with rubber adhesive for sealing.
When the air is exhausted, the collecting electrodes 1 are strongly pressed to the solid polarizing electrodes 2 due to the pressure difference generated between the inside of the capacitor and the outside. The parts of the collecting electrodes 1 between the solid polarizing electrodes 2 are the dents lA. The dents are formed because of the pressure difference.
Since the pressure difference between the inside and the outside is equally applied to every contact, the contact resistance can be reduced equally in each of the contacts. In other words, there is no contact where such reduction is insufficient as compared with that in other contacts.
The small holes 5 are arranged abov0 and below the separator 3 respectively because such an arrangement of one small hole for drawing the air between the upper collecting electrode 1 and the separator 3 and the other one for drawing the air between the lower collecting electrode 1 and the separator 3 respectively enable the air to be drawn more quickly.
In this respect, it is possible to impregnate the solid polarizing electrodes 2 with electrolyte by injecting it through 2~2~8~
the small holes 5 after the air is drawn. In this way, the electrolyte can be impregnated quickly and completely in every part of the solid polari2ing electrodes 2. Consequently the operativity in manufacturing can be improved and at the same time the performance is upgraded.
In the above example, although the gasket 4 provided with small holes 5 is selected as members for separating the inside from the outside (of the electrical double-layer capacitor)r, the collecting electrodes 1 can be used as such members.
According to the present invention, there is no need of any device provided outside the electrical double-layer capacitor to apply a mechanical force because the draw of the internal air from the electrical double-layer capacitor enables the contact force to be generated.
Although the invention has been described in its prefered form with a certain degree of particularity, it is understood that the present disclosure of the preferred form has been changed in the details of construction and the combination and arrangement of parts may be resorted to without departing from the spirit and the scope of the invention as hereinafter claimed.
Claims
The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:-An electrical double-layer capacitor characterized in that small holes, which can be sealed after the draw of the internal air is provided in members for separating the inside of the capacitor from the outside.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019948A JPH0666230B2 (en) | 1990-01-30 | 1990-01-30 | Electric double layer capacitor |
| JP2-19948 | 1990-01-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2028887A1 CA2028887A1 (en) | 1991-07-31 |
| CA2028887C true CA2028887C (en) | 1995-01-17 |
Family
ID=12013428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002028887A Expired - Fee Related CA2028887C (en) | 1990-01-30 | 1990-10-30 | Electrical double-layer capacitor |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US5065286A (en) |
| EP (1) | EP0439686B1 (en) |
| JP (1) | JPH0666230B2 (en) |
| KR (1) | KR910014966A (en) |
| CN (1) | CN1019618B (en) |
| CA (1) | CA2028887C (en) |
| DE (1) | DE69016636T2 (en) |
Families Citing this family (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6233135B1 (en) | 1994-10-07 | 2001-05-15 | Maxwell Energy Products, Inc. | Multi-electrode double layer capacitor having single electrolyte seal and aluminum-impregnated carbon cloth electrodes |
| US5621607A (en) * | 1994-10-07 | 1997-04-15 | Maxwell Laboratories, Inc. | High performance double layer capacitors including aluminum carbon composite electrodes |
| US5862035A (en) | 1994-10-07 | 1999-01-19 | Maxwell Energy Products, Inc. | Multi-electrode double layer capacitor having single electrolyte seal and aluminum-impregnated carbon cloth electrodes |
| JPH11135369A (en) * | 1997-10-28 | 1999-05-21 | Nec Corp | Electrical double layer capacitor |
| JP3241325B2 (en) | 1998-07-31 | 2001-12-25 | 日本電気株式会社 | Electric double layer capacitor |
| US6449139B1 (en) | 1999-08-18 | 2002-09-10 | Maxwell Electronic Components Group, Inc. | Multi-electrode double layer capacitor having hermetic electrolyte seal |
| US6627252B1 (en) | 2000-05-12 | 2003-09-30 | Maxwell Electronic Components, Inc. | Electrochemical double layer capacitor having carbon powder electrodes |
| US6631074B2 (en) | 2000-05-12 | 2003-10-07 | Maxwell Technologies, Inc. | Electrochemical double layer capacitor having carbon powder electrodes |
| US6643119B2 (en) | 2001-11-02 | 2003-11-04 | Maxwell Technologies, Inc. | Electrochemical double layer capacitor having carbon powder electrodes |
| US6813139B2 (en) * | 2001-11-02 | 2004-11-02 | Maxwell Technologies, Inc. | Electrochemical double layer capacitor having carbon powder electrodes |
| US7791860B2 (en) | 2003-07-09 | 2010-09-07 | Maxwell Technologies, Inc. | Particle based electrodes and methods of making same |
| US20060147712A1 (en) * | 2003-07-09 | 2006-07-06 | Maxwell Technologies, Inc. | Dry particle based adhesive electrode and methods of making same |
| US20070122698A1 (en) * | 2004-04-02 | 2007-05-31 | Maxwell Technologies, Inc. | Dry-particle based adhesive and dry film and methods of making same |
| US7352558B2 (en) | 2003-07-09 | 2008-04-01 | Maxwell Technologies, Inc. | Dry particle based capacitor and methods of making same |
| US7920371B2 (en) * | 2003-09-12 | 2011-04-05 | Maxwell Technologies, Inc. | Electrical energy storage devices with separator between electrodes and methods for fabricating the devices |
| US7090946B2 (en) | 2004-02-19 | 2006-08-15 | Maxwell Technologies, Inc. | Composite electrode and method for fabricating same |
| US7440258B2 (en) * | 2005-03-14 | 2008-10-21 | Maxwell Technologies, Inc. | Thermal interconnects for coupling energy storage devices |
| EP1894215A1 (en) | 2005-06-24 | 2008-03-05 | Universal Supercapacitors Llc. | Current collector for double electric layer electrochemical capacitors and method of manufacture thereof |
| JP2008544543A (en) | 2005-06-24 | 2008-12-04 | ユニバーサル・スーパーキャパシターズ・エルエルシー | Heterogeneous electrochemical supercapacitor and method for producing the same |
| RU2381586C2 (en) | 2005-06-24 | 2010-02-10 | ЮНИВЕРСАЛ СУПЕРКАПАСИТОРЗ ЭлЭлСи | Electrode and current collector for electrochemical capacitor with double electric layer, and electrochemical capacitor with double electric layer made thereof |
| US7692411B2 (en) * | 2006-01-05 | 2010-04-06 | Tpl, Inc. | System for energy harvesting and/or generation, storage, and delivery |
| US7864507B2 (en) | 2006-09-06 | 2011-01-04 | Tpl, Inc. | Capacitors with low equivalent series resistance |
| US7919014B2 (en) | 2006-11-27 | 2011-04-05 | Universal Supercapacitors Llc | Electrode for use with double electric layer electrochemical capacitors having high specific parameters |
| TW200826127A (en) * | 2006-12-04 | 2008-06-16 | Ctech Technology Corp | Fabrication method of ultracapacitor and structure thereof |
| US8472163B2 (en) * | 2007-02-19 | 2013-06-25 | Universal Supercapacitors Llc | Negative electrode current collector for heterogeneous electrochemical capacitor and method of manufacture thereof |
| US20080241656A1 (en) * | 2007-03-31 | 2008-10-02 | John Miller | Corrugated electrode core terminal interface apparatus and article of manufacture |
| US20080235944A1 (en) * | 2007-03-31 | 2008-10-02 | John Miller | Method of making a corrugated electrode core terminal interface |
| JP2011014859A (en) * | 2009-01-27 | 2011-01-20 | Panasonic Corp | Electric double layer capacitor |
| US20120225359A1 (en) * | 2010-07-06 | 2012-09-06 | U.S. Government As Represented By The Secretary Of The Army | Electrolytes in Support of 5 V Li ion Chemistry |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3536963A (en) * | 1968-05-29 | 1970-10-27 | Standard Oil Co | Electrolytic capacitor having carbon paste electrodes |
| US4542444A (en) * | 1983-12-27 | 1985-09-17 | The Standard Oil Company | Double layer energy storage device |
| JPS62232113A (en) * | 1986-03-31 | 1987-10-12 | 株式会社村田製作所 | Electric double-layer capacitor |
| JPS63179510A (en) * | 1987-01-21 | 1988-07-23 | 株式会社村田製作所 | Electric double-layer capacitor |
| JPH0193110A (en) * | 1987-10-02 | 1989-04-12 | Elna Co Ltd | Electric double layer capacitor |
| JPH01101619A (en) * | 1987-10-14 | 1989-04-19 | Nec Corp | Manufacture of electrical double layer capacitor |
| JPH01303712A (en) * | 1988-05-31 | 1989-12-07 | Elna Co Ltd | Manufacture of electric double layer capacitor cell |
-
1990
- 1990-01-30 JP JP2019948A patent/JPH0666230B2/en not_active Expired - Lifetime
- 1990-10-23 DE DE69016636T patent/DE69016636T2/en not_active Expired - Fee Related
- 1990-10-23 EP EP90120288A patent/EP0439686B1/en not_active Expired - Lifetime
- 1990-10-29 US US07/604,507 patent/US5065286A/en not_active Expired - Fee Related
- 1990-10-30 CA CA002028887A patent/CA2028887C/en not_active Expired - Fee Related
- 1990-11-14 KR KR1019900018409A patent/KR910014966A/en not_active Application Discontinuation
-
1991
- 1991-01-24 CN CN91100461A patent/CN1019618B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1019618B (en) | 1992-12-23 |
| EP0439686B1 (en) | 1995-02-01 |
| CA2028887A1 (en) | 1991-07-31 |
| EP0439686A3 (en) | 1991-10-09 |
| EP0439686A2 (en) | 1991-08-07 |
| DE69016636T2 (en) | 1995-10-05 |
| DE69016636D1 (en) | 1995-03-16 |
| KR910014966A (en) | 1991-08-31 |
| JPH03225811A (en) | 1991-10-04 |
| US5065286A (en) | 1991-11-12 |
| CN1053860A (en) | 1991-08-14 |
| JPH0666230B2 (en) | 1994-08-24 |
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| JPH03218616A (en) | Electric double-layer capacitor |
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| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |