CN201514861U - Super capacitor - Google Patents
Super capacitor Download PDFInfo
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- CN201514861U CN201514861U CN2009202288732U CN200920228873U CN201514861U CN 201514861 U CN201514861 U CN 201514861U CN 2009202288732 U CN2009202288732 U CN 2009202288732U CN 200920228873 U CN200920228873 U CN 200920228873U CN 201514861 U CN201514861 U CN 201514861U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/13—Energy storage using capacitors
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Abstract
The utility model relates to a super capacitor which comprises a flexible package film, electrolyte, a capacitor core, a positive pole lug and a negative pole lug, wherein the capacitor core is formed by sequentially overlapping positive plates, porous isolating membranes and negative plates in an alternate way; the end part of one end of each positive plate is provided with a blank positive pole current collecting body, and the end part of one end of each negative plate is provided with a blank negative pole current collecting body; the positive pole lug and the negative pole lug are positioned at two ends of the capacitor core; 2-10 groups of positive plates and negative plates are arranged; and all the groups of blank positive pole current collecting bodies are arranged in a staggered way, and all the groups of blank negative pole current collecting bodies are arranged in the staggered way and positioned at the end part of the other end of the capacitor core. The super capacitor effectively enlarges the thickness and the total area of the pole lugs, reduces the heat productivity, avoids the short circuit between the positive pole lug and the negative pole lug, and reduces the welding thickness; furthermore, the provided super capacitor has the characteristic of being high in energy density, suitable for large-current charging and discharging, safe in use and convenient for welding and processing.
Description
Technical field
The utility model relates to a kind of ultracapacitor, belongs to the capacitor technology field.
Background technology
Ultracapacitor is a kind of novel energy-storing device between physics electric capacity and storage battery, have than much higher energy density of traditional capacitor and the power density more much bigger, integrate characteristics such as long-life, high power density, wide serviceability temperature scope, charging rate be fast than storage battery.These good characteristics of ultracapacitor have extremely widely it and use in fields such as traffic, radio communication, military affairs, clean energy resource system.
Along with the continuous expansion in supercapacitor applications field, more and more need ultracapacitor can be placed in the limited space and go, this volume and form to ultracapacitor is had higher requirement.When traditional metal shell was used as the outer enclosure parts, the thickness of ultracapacitor product was higher, and there are significant limitation in volume and form.For this reason, a kind ofly adopt multilayer complex films that macromolecule membrane and metal forming form to cause people's attention gradually as the slim ultracapacitor of outer enclosure material.Such as, Chinese patent CN100414653C number and Chinese patent have all been reported this flexible packed super-capacitor CN201117445Y number.Compare with traditional metal shell ultracapacitor, the advantage of this novel ultracapacitor has been to adopt the multilayer complex films with splendid flexibility, makes it more flexible on form and manufacturing process, can make slim and ultrathin ultracapacitor.
Consider that from the angle of control thickness this class ultracapacitor is general to adopt stacked structure, and the positive and negative electrode lug is positioned at an end of capacitor core.Because be subjected to the restriction of capacitor volume and lug position, the thickness of positive and negative electrode lug and area all can not be too big, therefore, lug is difficult to bear bigger charging and discharging currents.Like this, the quality of thin-type soft packaging super capacitor is more general only about 1Kw/Kg than power.When high current charge-discharge, the phenomenon of local overheating appears in capacitor internal heat skewness easily near the positive and negative electrode lug, and this has badly influenced the fail safe that ultracapacitor uses.
At this disadvantage, Chinese patent has been announced a kind of cascade type super capacitor and manufacture method thereof CN101281820A number, and its characteristics are that the positive and negative electrode exit lays respectively at the relative both sides of electrode duplexer.Reduce the polarization that produces slowly owing to electron conduction so on the one hand, obviously improved the discharge performance of capacitor; The heat that makes cascade type super capacitor produce in discharge process on the other hand can be uniformly distributed in capacitor inside, thereby has avoided the phenomenon of the inner local overheating of capacitor.But the ultracapacitor of this structure all must reserve the join domain of the blank collector of enough width as the positive and negative electrode exit in the both sides of duplexer, and this part space can not be used for stored energy.Therefore, this capacitor specific energy when quality is than power ascension declines to a great extent.
Summary of the invention
The purpose of this utility model is: overcome the deficiencies in the prior art, a kind of suitable high current charge-discharge, the ultracapacitor that keeps the high-quality specific energy simultaneously safe in utilization are provided.
The technical solution of the utility model is:
A kind of ultracapacitor comprises flexible packaging film, electrolyte, capacitor core, positive pole ear and negative lug; It is characterized in that: capacitor core is made up of alternate successively being superimposed of positive plate, porous isolating membrane and negative plate; There is blank plus plate current-collecting body the end of one end of every positive plate, and there is blank negative current collector the end of an end of every negative plate; Positive pole ear and negative lug are positioned at the two ends of capacitor core; Above-mentioned positive plate, negative plate are 2 to 10 groups, and the position of the blank plus plate current-collecting body of positive plate is identical on the same group, and the position of the blank negative current collector of negative plate is identical on the same group; Each is organized the position of blank plus plate current-collecting body and staggers mutually, and is positioned at the end of an end of capacitor core, staggers mutually and be positioned at the end of the other end of capacitor core in each position of organizing blank negative current collector.
Above-mentioned positive pole ear is connected with blank negative current collector with corresponding blank plus plate current-collecting body respectively with negative lug; Positive pole ear and negative lug and flexible packaging film contact site are provided with sealing.
The thickness of above-mentioned positive pole ear is 5～30 times of blank anode collection body thickness, and the thickness of negative lug is 5～30 times of blank negative pole currect collecting body thickness.
The thickness of positive pole ear is 5～9 times of blank anode collection body thickness, and the thickness of negative lug is 5～9 times of blank negative pole currect collecting body thickness.
The positive pole ear at above-mentioned capacitor core two ends and negative lug have 1 respectively at least.
The positive pole ear at above-mentioned capacitor core two ends and negative lug number are respectively 1～5.
The width of above-mentioned blank plus plate current-collecting body and the width of blank negative current collector are respectively less than the width of positive pole ear and negative lug.
The width of above-mentioned positive pole ear and negative lug is respectively the width of blank plus plate current-collecting body and 2～5 times of blank negative current collector width.
The beneficial effects of the utility model are:
(1) positive pole ear and negative lug place the two ends of capacitor core respectively, can effectively avoid the short circuit between positive pole ear and negative lug, also can make the heat distribution of capacitor inside more even, thereby improve the safety in utilization of ultracapacitor;
(2) positive plate, the unnecessary blank collector of negative plate are dismissed,, helped alleviating the weight of capacitor core, improve the specific energy of ultracapacitor only at the blank collector of end reserve part of an end of pole piece;
(3) blank plus plate current-collecting body and blank negative current collector lay respectively at the two ends of capacitor core, and staggering mutually in the blank collector position of same end, when being connected with lug, has reduced throat thickness, is convenient to the stack of multilayer pole piece, and be difficult for causing the phenomenon of leakage;
(4) ultracapacitor of employing said structure effectively increases the thickness and the gross area of lug, helps reducing current density, reduces caloric value, is fit to high current charge-discharge.
Description of drawings
Fig. 1 is the integral outer structural representation of the utility model preferred embodiment;
Fig. 2 is the blank plus plate current-collecting body among Fig. 1 and the connection diagram of blank negative current collector and positive pole ear and negative lug;
Fig. 3 is the position view of Fig. 1 empty plus plate current-collecting body and blank negative current collector.
The member name of mark correspondence is called among the figure: 1-positive pole ear, 2-negative lug, 3-flexible packaging film, 4-capacitor core, the blank plus plate current-collecting body of 5-, the blank negative current collector of 6-, 7-sealing, 8-positive plate, 9-negative plate, 10-porous isolating membrane.
Embodiment
For further understanding summary of the invention of the present utility model, characteristics and beneficial effect, also in conjunction with the accompanying drawings the utility model is elaborated by following embodiment now.
Embodiment 1: as shown in Figure 1, 2, 3, a kind of ultracapacitor, forming member has flexible packaging film 3, electrolyte, capacitor core 4, positive pole ear 1 and negative lug 2; Capacitor core 4 is made up of alternate successively being superimposed of positive plate 8, porous isolating membrane 10 and negative plate 9, present embodiment is shown in Fig. 2,3, and capacitor core 4 is pressed by the positive plate 8 and the negative plate 9 of parcel porous isolating membrane 10: just/negative/just/negative ... order be formed by stacking successively; There is blank plus plate current-collecting body 5 end of one end of every positive plate 8, and there is blank negative current collector 6 end of an end of every negative plate 9; Positive pole ear 1 and negative lug 2 are positioned at the two ends of capacitor core 4.Described positive plate 8, negative plate 9 are 2 to 10 groups, and present embodiment is respectively 3 groups; The position of the blank plus plate current-collecting body 5 of positive plate 8 is identical on the same group, and the position of the blank negative current collector 6 of negative plate 9 is identical on the same group; Each is organized the position of blank plus plate current-collecting body 5 and staggers mutually, and be positioned at the end of an end of capacitor core 4, stagger mutually and be positioned at the end of the other end of capacitor core 4 in each position of organizing blank negative current collector 6, the described other end is meant an end relative with blank plus plate current-collecting body 5.Described positive pole ear 1 is connected with blank negative current collector 6 with corresponding blank plus plate current-collecting body 5 respectively with negative lug 2; Positive pole ear 1 and negative lug 2 are provided with sealing with flexible packaging film 3 contacts site, and this sealing is a heat-seal adhesive.The thickness of the thickness of described blank plus plate current-collecting body 5 and blank negative current collector 6 is respectively less than the thickness of positive pole ear 1 and negative lug 2.The thickness of described positive pole ear 1 is 5～30 times of blank plus plate current-collecting body 5 thickness, or 5～9 times, present embodiment is 9 times; The thickness of negative lug 2 is 5～30 times of blank negative current collector 6 thickness, or 5～9 times, present embodiment is 9 times.The positive pole ear 1 and the negative lug 2 at described capacitor core 4 two ends have 1 respectively at least, and the positive pole ear 1 and negative lug 2 numbers that are chosen as capacitor core 4 two ends are respectively 1～5, and present embodiment is respectively 1.The width of the width of described blank plus plate current-collecting body 5 and blank negative current collector 6 is respectively less than the width of positive pole ear 1 and negative lug 2.The width of described positive pole ear 1 of preferable scheme and negative lug 2 is respectively the width of blank plus plate current-collecting body 5 and 2～5 times of blank negative current collector 6 width, and present embodiment is 3.5 times.
Embodiment 2: different with the foregoing description is that described positive plate 8, negative plate 9 are 2 groups; The thickness of described positive pole ear 1 is 5 times of blank plus plate current-collecting body 5 thickness; The positive pole ear 1 and negative lug 2 numbers at described capacitor core 4 two ends are respectively 3.
Embodiment 3: different with the foregoing description is that described positive plate 8, negative plate 9 are 10 groups; The thickness of described positive pole ear 1 is 30 times of blank plus plate current-collecting body 5 thickness; The positive pole ear 1 and negative lug 2 numbers at described capacitor core 4 two ends are respectively 5.
More specifically be described as follows:
With reference to accompanying drawing 3, select for use thickness be the aluminium foil of 15～30 μ m as blank plus plate current-collecting body 5 and blank negative current collector 6, respectively on blank plus plate current-collecting body 5 and blank negative current collector 6 dual coating based on the electrode material of active carbon and conductive carbon black.According to dimensional requirement positive plate 8, negative plate 9 are cut and roll forming, and at one end leave the part aluminium foil as blank collector, positive plate 8 removes blank plus plate current-collecting body 5 part external application porous isolating membranes 10 parcels.The width of described positive plate 8 is 3～7 times of blank plus plate current-collecting body 5 width, and blank plus plate current-collecting body 5 is positioned at left side, centre and the right side of positive plate 8 same ends; The width of described negative plate 9 is 3～7 times of blank negative current collector 6 width, and blank negative current collector 6 is positioned at left side, centre and the right side of the same end of negative plate.To be enclosed with successively the positive plate 8 of porous isolating membrane 10 and negative plate 9 by: just/negative/just/negative ... alternate being superimposed of order, blank plus plate current-collecting body 5 and blank negative current collector 6 interlace and are positioned at the two ends of electrode duplexer, and the position of the blank plus plate current-collecting body 5 of any adjacent three positive plates 8 or negative plate 9 and blank negative current collector 6 is all inequality.As shown in Figure 2, capacitor core 4 one ends of making are three groups of blank plus plate current-collecting bodies 5, and the other end is three groups of blank negative current collectors 6.With ultrasonic spot welder each is organized blank plus plate current-collecting body 5 and weld together, each is organized blank negative current collector 6 weld together with the negative lug 2 that has heat-seal adhesive 7 with the positive pole ear 1 that has heat-seal adhesive 7.The thickness of described positive pole ear 1 and negative lug 2 is 0.15～0.3mm, and the width of positive plate 8 and negative plate 9 is respectively positive pole ear 1 and negative lug 2 width 1～2 times.Select aluminum-plastic composite membrane as flexible packaging film 3, the capacitor core 4 after adopting vacuum hot-pressing process or heating packaging technology with immersion liquid is encapsulated in the aluminum-plastic composite membrane, makes ultracapacitor shown in Figure 1.This ultracapacitor has energy density height (greater than 5Wh/Kg), power density height (greater than 2Kw/Kg), safe in utilization and be convenient to the characteristics of welding processing.
Protection range of the present utility model is not limited to the foregoing description.
Claims (8)
1. a ultracapacitor comprises flexible packaging film (3), electrolyte, capacitor core (4), positive pole ear (1) and negative lug (2); It is characterized in that: capacitor core (4) is made up of positive plate (8), be superimposed alternate successively with negative plate (9) of porous isolating membrane (10); There is blank plus plate current-collecting body (5) end of one end of every positive plate (8), and there is blank negative current collector (6) end of an end of every negative plate (9); Positive pole ear (1) and negative lug (2) are positioned at the two ends of capacitor core (4); Described positive plate (8), negative plate (9) are 2 to 10 groups, and the position of the blank plus plate current-collecting body (5) of positive plate (8) is identical on the same group, and the position of the blank negative current collector (6) of negative plate (9) is identical on the same group; Each is organized the position of blank plus plate current-collecting body (5) and staggers mutually, and is positioned at the end of an end of capacitor core (4), staggers mutually and be positioned at the end of the other end of capacitor core (4) in each position of organizing blank negative current collector (6).
2. ultracapacitor as claimed in claim 1 is characterized in that: positive pole ear (1) is connected with blank negative current collector (6) with corresponding blank plus plate current-collecting body (5) respectively with negative lug (2); Positive pole ear (1) and negative lug (2) are provided with sealing with flexible packaging film (3) contact site.
3. ultracapacitor as claimed in claim 1 or 2 is characterized in that: the thickness of positive pole ear (1) is 5～30 times of blank plus plate current-collecting body (5) thickness, and the thickness of negative lug (2) is 5～30 times of blank negative current collector (6) thickness.
4. ultracapacitor as claimed in claim 1 or 2 is characterized in that: the thickness of positive pole ear (1) is 5～9 times of blank plus plate current-collecting body (5) thickness, and the thickness of negative lug (2) is 5～9 times of blank negative current collector (6) thickness.
5. ultracapacitor as claimed in claim 1 or 2 is characterized in that: the positive pole ear (1) and the negative lug (2) at capacitor core (4) two ends have 1 respectively at least.
6. ultracapacitor as claimed in claim 5 is characterized in that: the positive pole ear (1) at capacitor core (4) two ends and negative lug (2) number are respectively 1～5.
7. ultracapacitor as claimed in claim 1 is characterized in that: the width of the width of blank plus plate current-collecting body (5) and blank negative current collector (6) is respectively less than the width of positive pole ear (1) and negative lug (2).
8. ultracapacitor as claimed in claim 7 is characterized in that: the width of positive pole ear (1) and negative lug (2) is respectively the width of blank plus plate current-collecting body (5) and 2～5 times of blank negative current collector (6) width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202288732U CN201514861U (en) | 2009-10-16 | 2009-10-16 | Super capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202288732U CN201514861U (en) | 2009-10-16 | 2009-10-16 | Super capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201514861U true CN201514861U (en) | 2010-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202288732U Expired - Lifetime CN201514861U (en) | 2009-10-16 | 2009-10-16 | Super capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201514861U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101694815B (en) * | 2009-10-16 | 2012-05-30 | 中国船舶重工集团公司第七一二研究所 | Thin-type soft packaging super capacitor |
| CN106710893A (en) * | 2016-12-28 | 2017-05-24 | 东风商用车有限公司 | Inorganic lamination soft pack super capacitor monomer and preparation method thereof |
-
2009
- 2009-10-16 CN CN2009202288732U patent/CN201514861U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101694815B (en) * | 2009-10-16 | 2012-05-30 | 中国船舶重工集团公司第七一二研究所 | Thin-type soft packaging super capacitor |
| CN106710893A (en) * | 2016-12-28 | 2017-05-24 | 东风商用车有限公司 | Inorganic lamination soft pack super capacitor monomer and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Hubei Greatsea Newpower Technology Co., Ltd. Assignor: No.712 Inst., China Ship Heavy Industry Group Co. Contract record no.: 2011420000054 Denomination of utility model: Charging / discharging voltage equilibrium device of super capacitor module Granted publication date: 20100623 License type: Exclusive License Record date: 20110414 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100623 |