CN102403134A - folding super capacitor electrode - Google Patents
folding super capacitor electrode Download PDFInfo
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- CN102403134A CN102403134A CN2011103888656A CN201110388865A CN102403134A CN 102403134 A CN102403134 A CN 102403134A CN 2011103888656 A CN2011103888656 A CN 2011103888656A CN 201110388865 A CN201110388865 A CN 201110388865A CN 102403134 A CN102403134 A CN 102403134A
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- Prior art keywords
- collector
- super capacitor
- busbar
- electrode
- thin slice
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- 239000003990 capacitor Substances 0.000 title claims abstract description 25
- 239000002184 metal Substances 0.000 claims abstract description 33
- 229910052751 metal Inorganic materials 0.000 claims abstract description 33
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical group [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 56
- 229910052759 nickel Inorganic materials 0.000 claims description 28
- 150000002739 metals Chemical class 0.000 claims description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 239000000758 substrate Substances 0.000 claims description 5
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000013543 active substance Substances 0.000 abstract 2
- 239000011149 active material Substances 0.000 description 14
- 238000003466 welding Methods 0.000 description 7
- 238000004146 energy storage Methods 0.000 description 6
- 239000006260 foam Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 4
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 238000005476 soldering Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- -1 Merlon Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/13—Energy storage using capacitors
Landscapes
- Electric Double-Layer Capacitors Or The Like (AREA)
- Cell Electrode Carriers And Collectors (AREA)
Abstract
The invention provides a folding super capacitor electrode which mainly comprises a current collector coated with an active substance, a tab, a bus bar and a porous metal sheet, wherein the porous metal sheet is positioned in the middle of the current collector folded along a folding line, the bus bar is connected with two straight edges of the current collector parallel to the folding line, a white edge which is not coated with the active substance is arranged on one side of the current collector perpendicular to the folding line, the tab is simultaneously connected with the white edge connected after folding and the bus bar, and a matched long-strip-shaped non-porous edge is also arranged at the position of the porous metal sheet corresponding to the white edge. The pole piece is used for manufacturing the super capacitor, and has the outstanding advantages of simple structure, convenience in manufacturing, low cost, improvement of the output performance, the cycle life and the vibration resistance of the whole capacitor.
Description
Technical field
The present invention relates to a kind of electrode of super capacitor, specifically is a kind of collapsible electrode of super capacitor, belongs to the ultracapacitor technical field.
Background technology
As everyone knows, ultracapacitor is the novel energy-storing product that development in recent years is got up, and has long-life, outstanding advantage such as high-power.Ultracapacitor can be applicable to many fields, like solar energy storage, motor vehicle, laser-microwave weapon, device for mobile communication, portable instrument equipment, data accumulating storage system, emergent back-up source, the startup power supply of the battery that acts as a fuel and the accessory power supply on the electric automobile etc.As in the process of electric motor car practicability, find vehicle urgent need supply heavy current pulse electric energy when startup, climbing and acceleration, when braking, need big electric current store electrical energy, these are that storage battery is difficult to accomplish.The use of ultracapacitor can prolong the life-span that recycles of storage battery greatly, improves the practicality of electric motor car.
The ultracapacitor of existing market can be divided into organic system and two kinds of ultracapacitors of inorganic system by the electrolyte type; Organic system adopts organic substances such as Merlon, acetonitrile as electrolyte solvent; Have advantages such as operating voltage height, the life-span is long, high-power performance is good; But the energy storage of organic system ultracapacitor product is low, and cost is high, has restricted its application aspect big capacity energy storage.Inorganic system ultracapacitor adopts water as electrolytical solvent, and the product energy storage is big, and is cheap, and is with the obvious advantage aspect big capacity energy storage.But inorganic system ultracapacitor is compared a certain distance in addition with the organic system ultracapacitor at aspects such as product stability, high-power output performance, cycle lives.
Electrode of super capacitor is the core component of ultracapacitor, and its performance has directly influenced major product indexs such as the internal resistance, self discharge, cycle life, high-power output performance of product.Present inorganic system ultracapacitor production technology adopts deionized water and cream slurrying more; The explained hereafter electrode that on collectors such as nickel foam, is coated with then; This electrode manufacture craft is easy and simple to handle; With low cost, but the easy dry linting of electrode, the internal resistance made are bigger than normal, influenced performances such as inorganic system ultracapacitor high-power and useful life.Electric motor car simultaneously, field of wind power generation energy storage product environment for use are more abominable, are in the condition of jolting, vibrating all the time and work, and performances such as the product strength of ultracapacitor, vibration resistance property are also had higher requirement.
Summary of the invention
The objective of the invention is the weak point that influenced by electrode structure to bring to present inorganic system ultracapacitor product, a kind of collapsible electrode of super capacitor that improves capacitor output performance, cycle life and product vibration resistance property is provided.
Technical scheme of the present invention is:
Collapsible electrode of super capacitor; Comprise collector, lug and be coated in the active layer on the collector; Its improvements are to be overlapped into bilayer after the said collector doubling; Active layer is coated in the medial surface of double-deck collector, and the centre of double-deck collector accompanies the porous metals thin slice, is provided with the white edge of uncoated active layer on the collector with the perpendicular side side of broken line; The offside side that parallels with broken line on the collector is provided with busbar, and said lug is connected with above-mentioned white edge and busbar simultaneously.
Further scheme is: said porous metals thin slice is nickel sheet, copper sheet, stainless steel substrates or nickel plated steel strip, between thickness 0.01～1mm; On the said porous metals thin slice hole be shaped as circle or polygon, round diameter or polygon circumscribed circle diameter are 0.1～20mm, porous evenly distributes, porose area account for the thin slice gross area 15～60%; Said busbar is the lay edges of uncoated active layer on the collector; Said busbar is the bonding jumper that welds mutually with collector; Said bonding jumper is nickel sheet, stainless steel substrates or nickel plated steel strip, thick 0.01～1mm.
Beneficial effect of the present invention:
The active material of the ultracapacitor of ordinary flat structure is in the surface of collector; The present invention is through the folding inside that makes active material be in two-layer collector of collector; And after rolling, efficiently solve existing pole piece and use active material to be prone to the problem of dry linting that comes off for a long time, thereby prolong the useful life of product.The porous metals thin slice that the folding back of collector adds; Owing to adopt loose structure not influence the bonding of two-layer collector when rolling; Sheet metal has the good electron conducting power simultaneously, plays the effect of collector, and the active material electric charge transportation that is in contact with it is shifted.
Common smooth sheet metal has had and has contacted effect preferably, as with the contact area that has improved metal surface and active material after the coarse processing of its surface finish, can further improve conducting effect.The loose structure of sheet metal can make that electrolyte freely passes through, and the structure size in its hole can require according to pole strength, internal resistance requires decision.
Both sides after the electrode doubling are welded and are made it to connect together, and two-layer up and down collector closely connects, as in this toe, continuing to add the conductive capability that busbar of weldering also can further improve collector; The metal edges of porous metals thin slice is welded with the white edge of collector mutually; Make electrode of super capacitor form two-layer collector one deck porous metals thin slice totally three layers of conductive network structure; The collector flanging links together originally simultaneously; Both sides after the doubling also are welded as integral body, through the bigger conductive capability that improves electrode interior of these measures, have effectively improved the big current work performance of ultracapacitor.The adding of porous metals thin slice has also improved the intensity and the mechanical performance of electrode, thereby improves the anti-vibration performance of ultracapacitor.
The present invention has simple in structure, and is easily manufactured, cost is low, and can improve the outstanding advantage of whole capacitor device output performance, cycle life and resistance to vibration.
Description of drawings
Fig. 1 is the electrode deployed configuration sketch map of the present invention when not being welded busbar and lug.
Fig. 2 is an electrode contour structures sketch map of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
As shown in the figure; Collapsible electrode of super capacitor mainly is made up of the collector 2 that is coated with active material (like active carbon), lug 7, busbar 6 and porous metals thin slice 5; Porous metals thin slice 5 is arranged in the collector 2 after broken line 3 doublings; Porous metals thin slice 5 adopts nickel sheet with holes, copper sheet, stainless steel substrates or nickel plated steel strip, and its thickness is between 0.01～1mm.Be furnished with circle, triangle, quadrangle or other polygon through hole on the porous metals thin slice 5, the diameter of through hole or triangle, quadrangle, polygon circumscribed circle diameter are between 0.1～20mm.The area of through hole accounts for 15%～60%. of whole porous metals thin slice area
Busbar 6 links to each other with broken line 3 two parallel straight flanges with collector 2; Collector 2 with the perpendicular one side of broken line 3 on be provided with the white edge 1 of uncoated active material; Also be provided with the strip atresia limit that matches at described porous metals thin slice 5 with white edge 1 opposite position place, lug 7 simultaneously with doubling after the white edge 1 and the busbar 6 that link to each other continuous simultaneously.Busbar 6 is the bonding jumper of welding during practical implementation, and also the white edge of available uncoated active material replaces.
Embodiment one
Adopt conventional method configuration active carbon slurry; On the nickel foam collector, be coated with active material; And reserve the position of 5mm width white edge on nickel foam top, also can obtain white edge at the active material that whole collector coating finishes to adopt the clear powder method of ultrasonic wave to remove top 5mm width in the back.
Collector along the flanging doubling, and is put into 0.2mm thickness punching nickel plated steel strip, and 5mm width metal edges is stayed on nickel plated steel strip top.The regular hexagon through hole is arranged on the nickel plated steel strip, and the external diameter of a circle in hole is 0.5mm, and the ratio that the hole accounts for the sheet metal gross area is 35%.Collector and nickel plated steel strip are compressed together, adopt the AC spot-welding mode welded together top white edge and metal edges; Two flangings with collector adopt the AC spot-welding mode welded together again, and weld a busbar.Busbar adopts nickel plated steel strip, and its thickness is 0.2mm.
Soldering polar ear above white edge and busbar is again put into roller press with electrode again and is rolled afterwards, makes the novel folding electrode of super capacitor, and the negative pole that this electrode can be used as ultracapacitor also can be used as positive pole.
This pole piece and sintrered nickel positive plate coating barrier film are assembled into asymmetric inorganic 6000F ultracapacitor monomer; Adopt BT2000 accumulator testing equipment and alternating current impedance instrument that it is tested; Its internal resistance descends 28% than same capability ordinary construction ultracapacitor, and high-power performance and cycle life obviously improve.
Embodiment two
At first adopt conventional method configuration active carbon slurry, and on the nickel foam collector, be coated with active material, the active material that finishes to adopt the clear powder method of ultrasonic wave to remove top 3mm width in the back in whole collector coating obtains white edge.
Collector along the flanging doubling, and is put into 0.05mm thickness punching nickel strap, and 3mm width metal edges is stayed on nickel strap top.Square hole is arranged on the nickel strap, and the external diameter of a circle in hole is 5mm, and the ratio that the hole accounts for the sheet metal gross area is 60%.Collector and nickel strap are compressed together, adopt the AC spot-welding mode welded together top white edge and metal edges; Two flangings with collector adopt the AC spot-welding mode welded together again, and weld a busbar.Busbar adopts the pure nickel band, and its thickness is 0.05mm.
Soldering polar ear above white edge and busbar is again put into roller press with electrode again and is rolled afterwards, makes the novel folding electrode of super capacitor, and the negative pole that this electrode can be used as ultracapacitor also can be used as positive pole.
This pole piece is coated barrier film be assembled into ultracapacitor 3000F monomer; Adopt BT2000 accumulator testing equipment and alternating current impedance instrument that it is tested; Its internal resistance descends 32% than same capability ordinary construction ultracapacitor, and high-power performance and cycle life obviously improve.
Embodiment three
Adopt conventional method configuration active carbon slurry, on the nickel foam collector, be coated with active material, adopt to jump to be coated with technology is reserved 5mm width white edge on nickel foam top position.
Collector along the flanging doubling, and is put into 0.2mm thickness punched copper tape, and 5mm width metal edges is stayed on copper strips top.Have tri-angle-holedly on the copper strips, the external diameter of a circle in hole is 2mm, and the ratio that the hole accounts for the sheet metal gross area is 20%, and with the coarse processing of polishing of this porous copper strap.Collector and copper strips are compressed together, adopt the AC spot-welding mode welded together top white edge and metal edges; Two flangings with collector adopt the AC spot-welding mode welded together again, and there is the lay edges of uncoated active material at two flanging places of collector, as busbar.
Soldering polar ear above white edge and busbar is again put into roller press with electrode again and is rolled afterwards, makes the novel folding electrode of super capacitor.
This electrode can be used as the negative pole of ultracapacitor; This pole piece and the anodal barrier film that coats of sintrered nickel are assembled into ultracapacitor 6000F monomer; Adopt BT2000 accumulator testing equipment and alternating current impedance instrument that it is tested; Its internal resistance descends 41% than same capability ordinary construction ultracapacitor, and high-power performance and cycle life obviously improve.
The capacitor product that above three embodiment are made is fastened on the vibration mechine and carries out the detection of vibration resistance property by the automobile-used ultracapacitor standard of QC/T 741-2006, adopts subordinate's condition to carry out vibration test:
A) vibration frequency: lOHz～55Hz;
B) direction of vibration: on the vibration that places an order;
C) peak acceleration: 30m/s
2;
D) time of vibration: 24h
Capacitor is after long-time vibration test, and housing does not have distortion, cracking, and electrolyte does not have leakage, indexs such as its test internal resistance, capacity, big electric current is had no significant change again, and the product anti-vibration performance is excellent.
The present invention does not relate to all identical with the prior art prior art that maybe can adopt of part and realizes.
Claims (6)
1. collapsible electrode of super capacitor; Comprise collector, lug and be coated in the active layer on the collector; It is characterized in that being overlapped into bilayer after the said collector doubling; Active layer is coated in the medial surface of double-deck collector, and the centre of double-deck collector accompanies the porous metals thin slice, is provided with the white edge of uncoated active layer on the collector with the perpendicular side side of broken line; The offside side that parallels with broken line on the collector is provided with busbar, and said lug is connected with above-mentioned white edge and busbar simultaneously.
2. by the described collapsible electrode of super capacitor of claim 1, it is characterized in that said porous metals thin slice is nickel sheet, copper sheet, stainless steel substrates or nickel plated steel strip, between thickness 0.01～1mm.
3. by the described collapsible electrode of super capacitor of claim 1; What it is characterized in that hole on the said porous metals thin slice is shaped as circle or polygon; Round diameter or polygon circumscribed circle diameter are 0.1～20mm, and porous evenly distributes, porose area account for the thin slice gross area 15～60%.
4. by the described collapsible electrode of super capacitor of claim 1, it is characterized in that said busbar is the lay edges of uncoated active layer on the collector.
5. by the described collapsible electrode of super capacitor of claim 1, it is characterized in that said busbar is the bonding jumper that welds mutually with collector.
6. by the described collapsible electrode of super capacitor of claim 5, it is characterized in that said bonding jumper is nickel sheet, stainless steel substrates or nickel plated steel strip, thick 0.01～1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103888656A CN102403134A (en) | 2011-11-30 | 2011-11-30 | folding super capacitor electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103888656A CN102403134A (en) | 2011-11-30 | 2011-11-30 | folding super capacitor electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102403134A true CN102403134A (en) | 2012-04-04 |
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ID=45885235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103888656A Pending CN102403134A (en) | 2011-11-30 | 2011-11-30 | folding super capacitor electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102403134A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201355575Y (en) * | 2009-02-12 | 2009-12-02 | 徐敖奎 | A winding supercapacitor |
| CN201465809U (en) * | 2009-07-22 | 2010-05-12 | 南京双登科技发展研究院有限公司 | A foldable supercapacitor electrode |
-
2011
- 2011-11-30 CN CN2011103888656A patent/CN102403134A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201355575Y (en) * | 2009-02-12 | 2009-12-02 | 徐敖奎 | A winding supercapacitor |
| CN201465809U (en) * | 2009-07-22 | 2010-05-12 | 南京双登科技发展研究院有限公司 | A foldable supercapacitor electrode |
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Application publication date: 20120404 |