CN205177621U - Lithium ion ultracapacitor system inner core structure - Google Patents
Lithium ion ultracapacitor system inner core structure Download PDFInfo
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- CN205177621U CN205177621U CN201521030807.6U CN201521030807U CN205177621U CN 205177621 U CN205177621 U CN 205177621U CN 201521030807 U CN201521030807 U CN 201521030807U CN 205177621 U CN205177621 U CN 205177621U
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- positive pole
- barrier film
- side edge
- lithium ion
- pole
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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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- Electric Double-Layer Capacitors Or The Like (AREA)
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Abstract
The utility model relates to a lithium ion ultracapacitor system inner core structure, including negative pole, diaphragm, the positive pole more than 2, wherein positive pole and negative pole fit together according to the mode of the half lap piece of partly convoluteing, obtain to contain the anodal formula lithium ion ultracapacitor system structure of partly convoluteing more than 3. The utility model discloses a configuration mode equipment positive pole, negative pole, diaphragm that half lap piece half was coiled not only can reduce the internal resistance of battery, can use in addition higher, the pliability less than the positive pole to lithium ion ultracapacitor system has higher energy density.
Description
Technical field
The utility model relates to a kind of electrochemical energy storage device, particularly relates to a kind of lithium ion super capacitor structure.
Background technology
Lithium ion super capacitor, as a type of ultracapacitor, has the advantage of ultracapacitor and lithium ion battery, not only high power density simultaneously, and fail safe is good, and cyclical stability is high, and has certain energy density, the advantages such as self discharge is low.That a class has better application prospect energy storage device in mobile communication, the startup field such as power supply, stand-by power supply.
Lithium-ion capacitor comprises positive pole, negative pole, the parts such as barrier film, electrolyte and shell.General employing two kinds of assembling modes.1, takeup type.Positive pole, negative pole, barrier film respectively only have a slice, after the overlap that is parallel to each other, according to a direction (as clockwise) be wound into cylindric or, flat column structure.The compact conformation of the battery of this structure, internal resistance is low, and cell power density is high, but the homogeneity of the counter electrode of battery of this structure and flexibility requirements are very high.And the pliability of the electrode of in fact high load amount and homogeneity, from technique, be all difficult to reach requirement.2, stacked.Positive pole, negative pole have a lot of sheet, have a slice positive pole, negative pole in the structure of every layer.Barrier film can be overall a slice, or every Rotating fields a slice.By every Rotating fields repeat fold, form a flexible-packed battery.This structure, to the homogeneity of electrode, requires lower, because can carry out assembled battery by selecting more homogeneous electrode, simultaneously to the pliability no requirement (NR) of electrode, the electrode of enough high load amount can be used, but shortcoming is, electrode structure is not tight, and the internal resistance of cell is higher.
To sum up all there is merits and demerits in the battery structure of two kinds of modes.
Utility model content
The utility model object is to propose a kind of new lithium ion super capacitor battery assembling mode, to overcome the shortcoming of above-mentioned two kinds of assembling modes.
For reaching this object, the utility model is intended taking following technical scheme:
The utility model provides a kind of lithium ion super capacitor core arrangement, comprises negative pole, barrier film, the positive pole of more than 2, and it carries out assembling by following put procedure and obtains,
1) by the barrier film of horizontal positioned from right to left first time 180 degree two parts up and down that are folded to form the symmetry be superimposed with each other, negative pole is placed in up and down between two parts of doubling;
2) first positive pole is placed in the upper surface of upper part barrier film, and the right side edge of first positive pole is alignd with the right side edge of upper part barrier film;
Again the negative pole of barrier film and inside thereof is carried out second time 180 degree to the right along the left side edge of first positive pole to fold, and the surface of upper part barrier film and first positive pole upper surface fit tightly; Obtain half coiled lithium ion supercapacitor structures of 1 positive pole;
3) second positive pole is placed in the upper surface of lower part barrier film, and the left side edge of second positive pole is alignd with the left side edge of lower part barrier film;
Again the negative pole of barrier film and inside thereof is carried out third time 180 degree left along the right side edge of second positive pole to fold, and the surface of lower part barrier film and second positive pole upper surface fit tightly; Obtain half coiled lithium ion supercapacitor structures of 2 positive poles;
4) just very more than 3 time, the positive pole of odd number sheet is by step 2) process carry out operator placement, the positive pole of even number sheet is by step 3) process carry out operator placement, namely obtain containing half coiled lithium ion supercapacitor structures of more than 3 positive poles.
The sheet-like anode of more than 2 is parallel to each other.
Step 2) in the right side edge of first positive pole align with the right side edge of upper part barrier film, namely the right side edge of first positive pole and the right side edge of upper part barrier film are in same perpendicular.
Step 3) in and the left side edge of second positive pole align with the left side edge of lower part barrier film, namely the left side edge of second positive pole and the left side edge of lower part barrier film are in same perpendicular.
The width of positive pole and negative pole fore-and-aft direction or above-below direction is all less than the width of barrier film above-below direction.
Positive pole and negative pole are laminated structure, and positive pole and negative pole both side surface are equipped with active material layer; Positive electrode active materials is active carbon, and negative active core-shell material is that lithium titanate, graphite, silicon, tin etc. have Lithium-ion embeding and deviates from one in the material of ability or more than two kinds compositions.
The width of negative pole left and right directions is less than or equal to the width of barrier film left and right directions.
Described both positive and negative polarity is all that conveniently active material, conductive agent, adhesive are mixed with and form by technique (include but not limited to coating, roll pressure, spray).The surface density of active material is: 0.1-100mgcm
-2, be preferably wherein 1-30mgcm
-2, the surface density of active carbon is: 0.01-20mgcm
-2, be preferably wherein 0.1-10mgcm
-2, the surface density of adhesive is 0.01-20mgcm
-2, be preferably wherein 0.1-10mgcm
-2.
Described barrier film can be polyethylene diagrams, polypropylene diaphragm, polyethylene, polypropylene composite materials barrier film, cellulosic separator, glass fibre element barrier film, ceramic membrane etc.
Contrast prior art, beneficial outcomes of the present utility model is: the utility model is by frame mode assembling positive pole, negative pole, the barrier film of half lamination half winding, not only can reduce the internal resistance of battery, and can use higher, the positive pole of pliability difference, thus lithium ion super capacitor has higher energy density.
Accompanying drawing explanation
Fig. 1 is the profile of lithium ion super capacitor of the present utility model assembling.
Wherein 1, positive pole; 2, negative pole; 3, barrier film.
Embodiment
Embodiment 1
The positive pole of lithium ion super capacitor is prepared as follows: first by active carbon, conductive agent, sodium carboxymethylcellulose, butadiene-styrene rubber, mix according to the mass ratio of 8.5:1:0.25:0.25, add a certain amount of deionized water, the solid content of electrode slurry is 30%, the electrode slurry mixed is coated in aluminum foil current collector, dry 12 hours for 50 degrees Celsius, vacuumize, for subsequent use.
The positive pole of lithium ion super capacitor is prepared as follows: first lithium titanate, conductive agent, Kynoar are mixed according to the mass ratio of 8:1:1, add a certain amount of deionized water, the solid content of electrode slurry is 15%, the electrode slurry mixed is coated in aluminum foil current collector, dry 12 hours for 70 degrees Celsius, vacuumize, for subsequent use.
Lithium ion super capacitor adopt electrolyte in solvent be propene carbonate and dimethyl carbonate (volume ratio is 1:1), salt 1 is LiPF6, and salt 1 concentration is 1molL-1, and salt 2 is tetraethylammonium tetrafluoroborate, and the concentration of salt 2 is 1molL-1.
The positive pole of lithium ion super capacitor and the negative pole mode according to half winding half lamination is fitted together: 1) by the barrier film of horizontal positioned, first time 180 degree is folded to form two parts up and down of the symmetry be superimposed with each other from right to left, negative pole is placed in up and down between two parts of doubling, 2) first positive pole is placed in the upper surface of upper part barrier film, and the right side edge of first positive pole is alignd with the right side edge of upper part barrier film; Again the negative pole of barrier film and inside thereof is carried out second time 180 degree to the right along the left side edge of first positive pole to fold, and the surface of upper part barrier film and first positive pole upper surface fit tightly; Obtain half coiled lithium ion supercapacitor structures of 1 positive pole; 3) second positive pole is placed in the upper surface of lower part barrier film, and the left side edge of second positive pole is alignd with the left side edge of lower part barrier film; Again the negative pole of barrier film and inside thereof is carried out third time 180 degree left along the right side edge of second positive pole to fold, and the surface of lower part barrier film and second positive pole upper surface fit tightly; Obtain half coiled lithium ion supercapacitor structures of 2 positive poles; 4) just very more than 3 time, the positive pole of odd number sheet is by step 2) process carry out operator placement, the positive pole of even number sheet is by step 3) process carry out operator placement, namely obtain containing half coiled lithium ion supercapacitor structures of more than 3 positive poles.
After both positive and negative polarity assembled package is good, inject electrolyte, the mass ratio of filling electrolyte and active carbon is 4:1.Sealing.Namely battery preparation is completed.
Claims (7)
1. a lithium ion super capacitor core arrangement, comprises negative pole, barrier film, the positive pole of more than 2, it is characterized in that: it carries out assembling by following put procedure and obtains,
1) by the barrier film of horizontal positioned from right to left first time 180 degree two parts up and down that are folded to form the symmetry be superimposed with each other, negative pole is placed in up and down between two parts of doubling;
2) first positive pole is placed in the upper surface of upper part barrier film, and the right side edge of first positive pole is alignd with the right side edge of upper part barrier film;
Again the negative pole of barrier film and inside thereof is carried out second time 180 degree to the right along the left side edge of first positive pole to fold, and the surface of upper part barrier film and first positive pole upper surface fit tightly; Obtain half coiled lithium ion supercapacitor structures of 1 positive pole;
3) second positive pole is placed in the upper surface of lower part barrier film, and the left side edge of second positive pole is alignd with the left side edge of lower part barrier film;
Again the negative pole of barrier film and inside thereof is carried out third time 180 degree left along the right side edge of second positive pole to fold, and the surface of lower part barrier film and second positive pole upper surface fit tightly; Obtain half coiled lithium ion supercapacitor structures of 2 positive poles;
4) just very more than 3 time, the positive pole of odd number sheet is by step 2) process carry out operator placement, the positive pole of even number sheet is by step 3) process carry out operator placement, namely obtain containing half coiled lithium ion supercapacitor structures of more than 3 positive poles.
2. according to lithium ion super capacitor core arrangement described in claim 1, it is characterized in that: the sheet-like anode of more than 2 is parallel to each other.
3. according to lithium ion super capacitor core arrangement described in claim 1, it is characterized in that: step 2) in the right side edge of first positive pole align with the right side edge of upper part barrier film, namely the right side edge of first positive pole and the right side edge of upper part barrier film are in same perpendicular.
4. according to lithium ion super capacitor core arrangement described in claim 1, it is characterized in that: step 3) in and the left side edge of second positive pole align with the left side edge of lower part barrier film, namely the left side edge of second positive pole and the left side edge of lower part barrier film are in same perpendicular.
5. according to lithium ion super capacitor core arrangement described in claim 1, it is characterized in that: the width of positive pole and negative pole fore-and-aft direction or above-below direction is all less than the width of barrier film above-below direction.
6. according to lithium ion super capacitor core arrangement described in claim 1, it is characterized in that: positive pole and negative pole are laminated structure, positive pole and negative pole both side surface are equipped with active material layer.
7. according to lithium ion super capacitor core arrangement described in claim 1, it is characterized in that: the width of negative pole left and right directions is less than or equal to the width of barrier film left and right directions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521030807.6U CN205177621U (en) | 2015-12-13 | 2015-12-13 | Lithium ion ultracapacitor system inner core structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201521030807.6U CN205177621U (en) | 2015-12-13 | 2015-12-13 | Lithium ion ultracapacitor system inner core structure |
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| CN205177621U true CN205177621U (en) | 2016-04-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106876169A (en) * | 2015-12-13 | 2017-06-20 | 中国科学院大连化学物理研究所 | A kind of lithium ion super capacitor core arrangement |
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- 2015-12-13 CN CN201521030807.6U patent/CN205177621U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106876169A (en) * | 2015-12-13 | 2017-06-20 | 中国科学院大连化学物理研究所 | A kind of lithium ion super capacitor core arrangement |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160420 Termination date: 20191213 |