CN102315027A - Electric double layer capacitor and method for fabricating the same - Google Patents
Electric double layer capacitor and method for fabricating the same Download PDFInfo
- Publication number
- CN102315027A CN102315027A CN2010102496450A CN201010249645A CN102315027A CN 102315027 A CN102315027 A CN 102315027A CN 2010102496450 A CN2010102496450 A CN 2010102496450A CN 201010249645 A CN201010249645 A CN 201010249645A CN 102315027 A CN102315027 A CN 102315027A
- Authority
- CN
- China
- Prior art keywords
- extruder member
- lead assemblies
- lead
- layer capacitor
- split pole
- Prior art date
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- 239000003990 capacitor Substances 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title abstract description 3
- 230000000712 assembly Effects 0.000 claims abstract description 56
- 238000000429 assembly Methods 0.000 claims abstract description 56
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 230000000994 depressogenic effect Effects 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 abstract 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 12
- 238000001125 extrusion Methods 0.000 description 8
- 239000003792 electrolyte Substances 0.000 description 6
- 238000003466 welding Methods 0.000 description 5
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- -1 aluminium metals Chemical class 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- IUHFWCGCSVTMPG-UHFFFAOYSA-N [C].[C] Chemical class [C].[C] IUHFWCGCSVTMPG-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000877 morphologic effect Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-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, LIGHT-SENSITIVE OR TEMPERATURE-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
- H01G11/84—Processes for the manufacture of hybrid or EDL capacitors, or components thereof
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
The invention provides an electric double layer capacitor and a method for fabricating the same, wherein the electric double layer capacitor has high capacity due to lead-wire resistance minimization caused by a native oxide layer when a plurality of lead wires are jointed. The electric double layer capacitor comprises a plurality of polarized electrodes, lead wire assemblies, a first extruding component and a second extruding component. The plurality of polarized electrodes are arranged around separators. The lead wire assemblies are lead wire assemblies at one terminal of the electrodes. The first extruding component and the second extruding component enable the lead wire assemblies to be located at the center and are combined, and have a concave layer and a convex layer, respectively.
Description
Technical field
The present invention relates to double electric layer capacitor and manufacturing approach thereof, relate in particular to through when connecting several lead-in wires, the lead resistance of natural oxide film being minimized to realize the double electric layer capacitor and the manufacturing approach thereof of large bulk capacitance.
Background technology
Double electric layer capacitor is the equipment that utilizes the electric charge of putting aside in the electric double layer that takes place between solid electrode and the electrolyte.The energy density of double electric layer capacitor is lower than battery, but power density is higher, and its useful life is very long, therefore can be applicable to several fields.The basic conception of double electric layer capacitor-double-deck notion is proposed in 1879 by Helmholtz (Helmholtz) for the first time.Afterwards, Gu Ai (gouy) and Cha Puman (Chapman) showed based on the model that spreads opinion at 1910 and 1913 respectively.Nineteen twenty-four Stern (Stern) serves as that immediate helmholtz layer of ion and the complex morphological that is made up of the dispersion layer of ion are advocated in the basis with the achievement in research of Helmholtz, Gu Ai and Cha Puman.The Bake that (Becker) of General Electric in 1945 is with Tar-lump black/H
2SO
4Be used as first patent of the relevant double electric layer capacitor of negative polarization electrode application, but fail its commercialization.The 1970's, the SOHIO and the Japanese Matsushita Electric Industries of the U.S. began to advance the relevant cause of capacitor; By Matsushita Electric Industries activated carbon was used as polarizing electrode in 1978 and used organic electrolysis solution to realize its commercialization, various countries fall over each other to launch the research to double electric layer capacitor afterwards.
The double electric layer capacitor utilization is put into a pair of solid electrode electrolyte ion solution and is applied direct voltage, has (-) ion and the electrostatic induction of (+) ion to form electric double layer at electrode and electrolyte interface in anode and the negative electrode respectively.Especially activated carbon carbon a lot of pores that distributing form the two point layers.Surface area is big more, and electrolytical permittivity is big more, and the ionic radius when forming electric double layer is more little, and then the electric capacity of double electric layer capacitor is big more.In addition, the pore of the internal resistance of electrode (equivalent series resistance), electrode distributes and also influences electric capacity with the relation of electrolyte ion, withstand voltage etc.Utilize the structure of the double electric layer capacitor of activated carbon to be: in the middle of separation membrane (separator) is located at, several split pole electrodes that repeated configuration is made up of activated carbon, an end of each split pole electrode possesses terminal and lead-in wire.And said extruding realization electrical connection through welding or utilizing the medium.As stated; In the existing double electric layer capacitor that utilizes activated carbon; For the electrostatic capacitance maximization that realizes double electric layer capacitor must realize going between and activated carbon between the resistance of circuit minimize, for this reason, the resistance between the joint portion of several wire bond is little.
At present, the fashion of extrusion that when connecting several lead-in wires, adopts welding or utilize the medium not only need extra increase welding sequence when still adopting welding manner, and the accessory substance that in welding process, takes place causes resistance to increase.And the fashion of extrusion that utilizes the medium is when the lead-in wire number that connects is less than 10; Being electrically connected between lead-in wire is all right; But the lead-in wire number is tens when above; The characteristic that is electrically connected reduces, because lead-in wire generally is made up of aluminium metals such as (Al), wire surface forms very thin natural oxide film (Al
2O
3Deng), the quantity of lead-in wire is many more, and the resistance that is caused by natural oxide film also increases.The increase of the lead resistance that is caused by natural oxide film is one difficulty that realizes large value capacitor.
Summary of the invention
In order to address the above problem, the present invention provides a kind of the connection when several go between that the lead resistance that is caused by natural oxide film is minimized, thereby realizes the double electric layer capacitor and the manufacturing approach thereof of large bulk capacitance.
To achieve these goals, the present invention provides a kind of double electric layer capacitor, several split pole electrodes, lead assemblies and first extruder member and second extruder member; Diaphragm configuration is between said each split pole electrode; Said lead assemblies is the assembly of lead-in wire that places an end of said each split pole electrode; First extruder member and second extruder member combine said lead assemblies in the middle of being arranged on and possess buckle layer respectively.
First extruder member possesses jut, and second extruder member possesses the depressed part of corresponding said jut.Said lead assemblies possesses the perforated portion that is clamped in the said jut.And when first extruder member engaged with said second extruder member, the buckle layer of the buckle layer of said first extruder member and second extruder member was engaged.
Said buckle layer can be the structure that polygonal point disposes repeatedly, and the height of said buckle layer is greater than the thickness of said lead assemblies.And also possessing provides the housing of filling electrolytical space, and said first extruder member is fixed in the top of said housing.
Said several split pole electrodes are divided into split pole and become several first split pole electrodes of anode to become several second split pole electrodes of negative electrode with split pole; Said lead assemblies is divided into; Be arranged on first lead assemblies of an end of said several first split pole electrodes; With second lead assemblies of an end that is arranged on said several second split pole electrodes, said first lead assemblies and second lead assemblies are respectively by said first extruder member and the extruding of second extruder member.
Double electric layer capacitor manufacturing approach of the present invention comprises the step of the electrode body that several split pole electrodes of preparation and lead assemblies are formed, under the situation that possesses said lead assemblies between first extruder member and second extruder member, pushes the step of said first extruder member and second extruder member.
And diaphragm configuration is between said each split pole electrode; Said lead assemblies is the assembly of lead-in wire that places an end of said each electrode; Said first extruder member and second extruder member possess buckle layer respectively, and when extruding, and the buckle layer of the buckle layer of first extruder member and second extruder member is engaged.
The invention effect
According to double electric layer capacitor of the present invention and manufacturing approach thereof, through lead assemblies extruding, connection that the extruder member that possesses buckle layer will be gathered several lead-in wires, the natural oxide film that destroys wire surface minimizes lead resistance.And, reduce to realize easily large bulk capacitance along with lead resistance.
Description of drawings
Fig. 1 is the sketch map of the double electric layer capacitor of the expression embodiment of the invention.
Fig. 2 is the electrode body of the expression embodiment of the invention and the sketch map of extrusion structure.
Fig. 3 is the lead assemblies of the expression embodiment of the invention and the sectional view of extrusion structure.
Fig. 4 a is the reference diagram of the squeezed state of double electric layer capacitor in the expression prior art.
Fig. 4 b is the reference diagram of the squeezed state of double electric layer capacitor in the expression embodiment of the invention.
Embodiment
Specify double electric layer capacitor and manufacturing approach thereof in the embodiment of the invention with reference to the accompanying drawings.
With reference to Fig. 1, the double electric layer capacitor in the embodiment of the invention totally is made up of the housing (10) of decision capacitor inner space and the electrolyte (not shown) that is arranged on the electrode body (100) of enclosure interior and is filled to said housing (10) inside.Said electrode body becomes several first split pole electrodes (110) of anode, split pole to become several second split pole electrodes (120) of negative electrode and barrier film (separator, 130) to form by split pole.Specifically, like Fig. 2 and shown in Figure 3, the configuration of alternate repetition can have activated carbon to constitute in the middle of the said first split pole electrode (110) and the second split pole electrode (120) were arranged on barrier film.And a side of each first split pole electrode (110) possesses the first terminal (111) respectively, and an end of each the first terminal (111) possesses first lead-in wire (112).Likewise, a side of each second split pole electrode (120) possesses second terminal (121) respectively, and an end of each second terminal (121) possesses second lead-in wire (122).At this moment, the first terminal (111) of the best first split pole electrode (110) is different with the allocation position of second terminal (121) of the second split pole electrode (120).Several first lead-in wires (112) are drawn from different positions respectively with several second lead-in wires (122) thus.Below, the gathering of several first lead-in wires (112) is called first lead assemblies (210), and the gathering of several second lead-in wires (122) is called second lead assemblies (220).
For through said first lead assemblies (210) and second lead assemblies (220) to several first split pole electrodes (110) and the second split pole electrode (120) supply power effectively; Several first lead-in wires (112), several second lead-in wires (122) that need constitute said first lead assemblies (210), second lead assemblies (220) are respectively realized being electrically connected; Resistance is minimum simultaneously; For this reason, present embodiment possesses the extrusion structure body.
Said extrusion structure body is combined by first extruder member (140) and second extruder member (150) that electric conducting material constitutes.Said first extruder member (140) and second extruder member (150) are arranged on the centre with said first lead assemblies (210) or second lead assemblies (220), are extruded, combine by external strength.For this reason, said first extruder member (140) possesses jut (142), and said second extruder member (150) possesses the depressed part (152) corresponding to said jut.And first lead assemblies (210) or second lead assemblies (220) that are sandwiched in said first extruder member (140) and said second extruder member (150) possess perforated portion (112a, 122a).The perforated portion of said first lead assemblies (210) or second lead assemblies (220) (112a, 122a) is sandwiched under the state of said jut (142), and said first extruder member (140) and second extruder member (150) push.Said first extruder member (140) and second extruder member (150) apply 1～3ton/cm through hydraulic press
2Pressure push.
On the other hand, the core feature of technological thought of the present invention is to realize that the lead resistance in said first lead assemblies (210) and second lead assemblies (220) minimizes.In order to realize this purpose, said first extruder member (140) and second extruder member (150) possess buckle layer (141,151) respectively.Said buckle layer (141,151) is that polygonal points (141a, 151a) such as triangled tip, four the top of the horns are adjacent, and configuration forms repeatedly.And the buckle layer (151) of the buckle layer (141) of first extruder member (140) and second extruder member (150) interlock each other.
So; First extruder member (140) and second extruder member (150) combine with concavo-convex form; Because first lead assemblies (210) between first extruder member (140) and second extruder member (150) or second lead assemblies (220) are along with male and fomale(M&F) (buckle layer (141) of first extruder member (140) and the buckle layer (151) of second extruder member (150) engage the face that forms) disposes; Therefore, first lead assemblies (210) or second lead assemblies (220) increase with the contact area of extruder member.And the natural oxide film that forms on each wire surface is destroyed, and makes the resistance of lead-in wire.If lead-in wire is made up of aluminium (Al), natural oxide film is by Al
2O
3Form.
With reference to Fig. 4 a, planar medium (420) pushes several lead-in wires (410) in the prior art, and the natural oxide film (411) on (410) surface that goes between is preserved, and increases because of natural oxide film (411) causes lead resistance.And in the present invention, shown in Fig. 4 b, natural oxide film is destroyed by buckle layer (141,151), so the ohmic loss that natural oxide film brings becomes minimum.On the other hand, in order to destroy the natural oxide film of wire surface effectively, the height of said buckle layer (141,151) must be greater than the thickness of said first lead assemblies (210) or second lead assemblies (220).With this understanding, the height and the length that form the polygonal point of said buckle layer can be diversified.And the extruding of said first extruder member (140) and second extruder member (150) can be used hydraulic press, can be through applying 1～3ton/cm
2Pressure extrusion first extruder member (140) and second extruder member (150).
For the combination between said extrusion structure body and the housing (10), said first extruder member (140) is fixed in the top of said housing (10), can also around first extruder member, reveal to prevent electrolyte by configuration packages parts (11).At this moment, said housing (10) is able to fix through screw (12) with first extruder member (140).
Claims (10)
1. a double electric layer capacitor is characterized in that: comprise several split pole electrodes, lead assemblies and first extruder member and second extruder member; Diaphragm configuration is between said each split pole electrode; Said lead assemblies is the assembly of lead-in wire that places an end of said each split pole electrode; First extruder member and second extruder member combine said lead assemblies in the middle of being arranged on and possess buckle layer respectively.
2. double electric layer capacitor according to claim 1 is characterized in that: first extruder member possesses jut, and said second extruder member possesses the depressed part corresponding to said jut, and said lead assemblies possesses the perforated portion that is sandwiched in said jut.
3. double electric layer capacitor according to claim 1 is characterized in that: when said first extruder member combines with said second extruder member, possess the engaged form of buckle layer of the buckle layer and said second extruder member of said first extruder member.
4. double electric layer capacitor according to claim 1 is characterized in that: said buckle layer is made up of the structure that polygonal point disposes repeatedly.
5. double electric layer capacitor according to claim 1 is characterized in that: the height of said buckle layer is greater than the thickness of said lead assemblies.
6. double electric layer capacitor according to claim 1 is characterized in that: further comprise the housing that holds electrolytical space is provided, said first extruder member is fixed in the top of said housing.
7. double electric layer capacitor according to claim 1 is characterized in that: said several split pole electrodes are divided into split pole and become several first split pole electrodes of anode electrode and several second split pole electrodes that split pole becomes cathode electrode; Said lead assemblies is divided into first lead assemblies and second lead assemblies that is arranged on an end of said each second split pole electrode of an end that is arranged on said each first split pole electrode; Said first lead assemblies and second lead assemblies are respectively by said first extruder member and the extruding of second extruder member.
8. the manufacturing approach of a double electric layer capacitor is characterized in that: the step that comprises the step of the electrode body that several split pole electrodes of preparation and lead assemblies are formed, under the situation that possesses said lead assemblies between first extruder member and second extruder member, pushes said first extruder member and second extruder member; Diaphragm configuration is between said each split pole electrode; Said lead assemblies is the assembly of lead-in wire that places an end of said each electrode; Said first extruder member and second extruder member possess buckle layer respectively, and when extruding, and the buckle layer of the buckle layer of first extruder member and second extruder member is engaged.
9. the manufacturing approach of double electric layer capacitor according to claim 8; It is characterized in that: first extruder member possesses jut; Said second extruder member possesses the depressed part corresponding to said jut; Said lead assemblies possesses the perforated portion that is sandwiched in said jut, and is sandwiched under the state of said jut at the perforated portion of said lead assemblies, is pushed by said first extruder member and second extruder member.
10. the manufacturing approach of double electric layer capacitor according to claim 8, it is characterized in that: the height of said buckle layer is higher than the thickness of said first lead assemblies or second lead assemblies.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2010-0064681 | 2010-07-06 | ||
| KR1020100064681A KR20120004036A (en) | 2010-07-06 | 2010-07-06 | Electric double layer capacitor and method for fabricating the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102315027A true CN102315027A (en) | 2012-01-11 |
Family
ID=45428092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102496450A Pending CN102315027A (en) | 2010-07-06 | 2010-08-10 | Electric double layer capacitor and method for fabricating the same |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR20120004036A (en) |
| CN (1) | CN102315027A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113851688A (en) * | 2020-06-26 | 2021-12-28 | 三星Sdi株式会社 | Rechargeable battery |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017011693A1 (en) * | 2015-07-14 | 2017-01-19 | John English | Database and server for automatic wagering |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009087612A (en) * | 2007-09-28 | 2009-04-23 | Sanyo Electric Co Ltd | Layered battery |
-
2010
- 2010-07-06 KR KR1020100064681A patent/KR20120004036A/en not_active Application Discontinuation
- 2010-08-10 CN CN2010102496450A patent/CN102315027A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009087612A (en) * | 2007-09-28 | 2009-04-23 | Sanyo Electric Co Ltd | Layered battery |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113851688A (en) * | 2020-06-26 | 2021-12-28 | 三星Sdi株式会社 | Rechargeable battery |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20120004036A (en) | 2012-01-12 |
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Application publication date: 20120111 |