CN105047429A - Method for manufacturing supercapacitor - Google Patents
Method for manufacturing supercapacitor Download PDFInfo
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- CN105047429A CN105047429A CN201510273150.4A CN201510273150A CN105047429A CN 105047429 A CN105047429 A CN 105047429A CN 201510273150 A CN201510273150 A CN 201510273150A CN 105047429 A CN105047429 A CN 105047429A
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- pole piece
- barrier film
- ultracapacitor
- temperature
- manufacture method
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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)
Abstract
The invention discloses a method for manufacturing a supercapacitor, and the method comprises the steps: pole piece manufacturing: firstly coating two surfaces of an aluminum-foil current collector after electrochemical corrosion with conducting resin, and then coating two surfaces of the aluminum-foil current collector with a mixture made of an active material, a conducting material, and binder solution; pole piece cold rolling; pole piece drying: enabling pole pieces to be placed in a vacuum drying box, drawing off the air, injecting nitrogen, increasing the temperature to 130 DEG C to 140 DEG C, and maintaining the temperature for 8 hour to 12 hour; pole piece and diaphragm separating and cutting; electrode core manufacturing: employing two pole piece rolls and two diaphragm rolls to form electrode cores through winding, and inserting the pole pieces and diaphragms; welding; assembling; liquid injecting; sealing: blocking or removing a reserved liquid injection mouth on a capacitor, and enabling the capacitor to remain sealed. The method provided by the invention can iron out a defect that the service life of the supercapacitor is affected by the aging of the diaphragm materials in the supercapacitor because the supercapacitor is too high in thermal processing temperature and is longer in time in a manufacturing process.
Description
Technical field
The present invention relates to a kind of ultracapacitor manufacture method, belong to capacitor manufacturing technology field.
Background technology
Drying is carried out in the vacuum drying oven that traditional ultracapacitor drying means needs ultracapacitor to load vacuum degree < 300Pa, baking temperature 120 ~ 150 DEG C, need 48 ~ 72 hours drying time, there is the low shortcoming of drying efficiency in it, and owing to lacking the conduction of air in vacuum drying oven, the temperature of ultracapacitor inside is caused to be difficult to reach set point equably, make the intrapore moisture of active carbon be difficult to complete exchange out, drying effect is poor; In addition, the diaphragm material in ultracapacitor can produce look and become and embrittlement phenomena impair useful life in long-time high-temperature baking process.
Chinese patent literature CN103745840A discloses a kind of ultracapacitor drying means, the ultracapacitor drying means traditional to this improves, first under vacuum conditions, make drying oven in 2 ~ 5 hours, be warming up to 120 DEG C ~ 200 DEG C, make drying oven keep 5 ~ 10 hours under the constant temperature of 120 DEG C ~ 200 DEG C again, carry out the drying of ultracapacitor.The heat treatment time of said method is between 7 ~ 15 hours, and temperature is 120 DEG C ~ 200 DEG C; Under such temperature conditions and duration, the aging conditions of diaphragm material in long-time high-temperature baking process of ultracapacitor is still inevitable.
Summary of the invention
The present invention is just for the deficiency that prior art exists, a kind of ultracapacitor manufacture method is provided, heat treatment temperature is too high in the fabrication process, the time is longer to overcome ultracapacitor, causes ultracapacitor septation material aging and affects the deficiency of ultracapacitor life performance.
For solving the problem, the technical solution used in the present invention is as follows:
A kind of ultracapacitor manufacture method, comprises the following steps:
Step one, prepare pole piece: all first apply one deck conducting resinl through the aluminum foil current collector two sides of electrochemical corrosion, then by the mixture that active material, electric conducting material and binder solution form, be coated in aluminium foil two sides;
Step 2, pole piece are cold rolling: by the pole piece for preparing by cold-rolling mill, active material mixture is evenly distributed closely knit;
Step 3, pole piece are dry: pole piece is put into vacuum drying oven, deflates, vacuum degree to < 20Pa, nitrogen injection, air pressure returns to an atmospheric pressure, is incubated 8 ~ 12 hours at being warming up to 130 DEG C ~ 140 DEG C;
Step 4, cut pole piece and barrier film: pole piece and barrier film are divided into suitable width;
Step 5, make electrode cores: use two volume pole piece rolls, two volume membrane coil are coiled into electrode cores, the alternate insertion of pole piece, barrier film;
Step 6, welding: use ultrasonic bond or laser the aluminum foil current collector at leading-out terminal and electrode cores two ends to be welded;
Step 7, assembling: the electrode cores of having welded leading-out terminal is loaded in shell;
Step 8, fluid injection: extract the gas inject electrolyte in shell out;
Step 9, leave standstill: by under ultracapacitor leave standstill 8 ~ 12 hours, make electrolyte fully infiltrate between the space of active material;
Step 10, fluid infusion: carry out a fluid infusion to ultracapacitor, fill up the vacancy of the electrolyte infiltrating space;
Step 11, sealing: shutoff or remove liquid injection port reserved on capacitor, make capacitor keep sealing state.
As the improvement of technique scheme, the assembling in described step 7 to described step 9, fluid injection and standing operation are all carried out in the normal temperature confined space being full of nitrogen.
Particularly, when barrier film is temperature-resistant material barrier film, barrier film can be together dry with pole piece before cutting, or before cutting, use a conventional oven at 100 DEG C ~ 130 DEG C dry 8 ~ 12 hours separately.Described temperature-resistant material barrier film be cellulosic separator, fibreglass diaphragm, thermoplastic resin and paper pulp fiber make barrier film, Teflon septum, polyimide diaphragm, containing TiO
2polyimide diaphragm or aromatic polyimide fibre and cellulose mixtures barrier film.
Particularly, when barrier film be not temperature-resistant material barrier film time, barrier film can use a conventional oven at 90 DEG C ~ 110 DEG C dry 8 ~ 12 hours separately before cutting.Described not temperature-resistant material barrier film is porous polypropylene barrier film or polyethylene diagrams.
Compared with prior art, implementation result of the present invention is as follows in the present invention:
A kind of ultracapacitor manufacture method of the present invention, pole piece only needs to be incubated 8 ~ 12 hours at 130 DEG C ~ 140 DEG C, liquid adhesive on pole piece can fully be volatilized removal, and diaphragm material does not need through high-temperature process simultaneously, avoids aging and affects capacitor life-span performance.
Embodiment
Below in conjunction with specific embodiments content of the present invention is described.
Specific embodiment 1
In the present embodiment, diaphragm of supercapacitor is the good material of temperature tolerance, the barrier film made as cellulosic separator, fibreglass diaphragm, thermoplastic resin and paper pulp fiber, Teflon septum, polyimide diaphragm, containing TiO
2polyimide diaphragm or aromatic polyimide fibre and cellulose mixtures barrier film, be remove the moisture that may contain in diaphragm material, in capacitor manufactures, before making electrode cores, drying can be carried out to barrier film.A kind of ultracapacitor manufacture method that the present embodiment provides, comprises the following steps:
(1) prepare pole piece: all first apply one deck conducting resinl through the aluminum foil current collector two sides of electrochemical corrosion, then by the mixture that active material, electric conducting material and binder solution form, be coated in aluminium foil two sides;
(2) pole piece is cold rolling: by the pole piece for preparing by cold-rolling mill, active material mixture is evenly distributed closely knit;
(3) pole piece is dry: pole piece is put into vacuum drying oven, deflates, vacuum degree to < 20Pa, nitrogen injection, air pressure returns to an atmospheric pressure, is incubated 8 ~ 12 hours at being warming up to 130 DEG C ~ 140 DEG C;
(4) barrier film is dry: diaphragm material can be together dry with pole piece, also can use a conventional oven at 100 DEG C ~ 130 DEG C dry 8 ~ 12 hours;
(5) pole piece and barrier film is cut: pole piece and barrier film are divided into suitable width;
(6) electrode cores is made: use two volume pole piece rolls, two volume membrane coil are coiled into electrode cores, the alternate insertion of pole piece, barrier film;
(7) weld: use ultrasonic bond or laser the aluminum foil current collector at leading-out terminal and electrode cores two ends to be welded;
(8) assemble: the electrode cores of having welded leading-out terminal is loaded in shell;
(9) fluid injection: extract the gas inject electrolyte in shell out;
(10) leave standstill: leave standstill 8 ~ 12 hours by under ultracapacitor, make electrolyte fully infiltrate between the space of active material;
(11) fluid infusion: carry out a fluid infusion to ultracapacitor, fills up the vacancy of the electrolyte infiltrating space;
(12) seal: shutoff or remove liquid injection port reserved on capacitor, make capacitor keep sealing state.
Specific embodiment 2
In the present embodiment, diaphragm of supercapacitor is the poor polymeric material of temperature tolerance, as porous polypropylene barrier film, polyethylene diagrams etc., considers that the moisture content of polymer own is low, and storage environment and manufacturing environment control proper, and barrier film can not carry out drying.A kind of ultracapacitor manufacture method that the present embodiment provides, comprises the following steps:
(1) prepare pole piece: all first apply one deck conducting resinl through the aluminum foil current collector two sides of electrochemical corrosion, then by the mixture that active material, electric conducting material and binder solution form, be coated in aluminium foil two sides;
(2) pole piece is cold rolling: by the pole piece for preparing by cold-rolling mill, active material mixture is evenly distributed closely knit;
(3) pole piece is dry: pole piece is put into vacuum drying oven, deflates, vacuum degree to < 20Pa, nitrogen injection, air pressure returns to an atmospheric pressure, is incubated 8 ~ 12 hours at being warming up to 130 DEG C ~ 140 DEG C;
(4) pole piece and barrier film is cut: pole piece and barrier film are divided into suitable width;
(5) electrode cores is made: use two volume pole piece rolls, two volume membrane coil are coiled into electrode cores, the alternate insertion of pole piece, barrier film;
(6) weld: use ultrasonic bond or laser the aluminum foil current collector at leading-out terminal and electrode cores two ends to be welded;
(7) assemble: the electrode cores of having welded leading-out terminal is loaded in shell;
(8) fluid injection: extract the gas inject electrolyte in shell out;
(9) leave standstill: leave standstill 8 ~ 12 hours by under ultracapacitor, make electrolyte fully infiltrate between the space of active material;
(10) fluid infusion: carry out a fluid infusion to ultracapacitor, fills up the vacancy of the electrolyte infiltrating space;
(11) seal: shutoff or remove liquid injection port reserved on capacitor, make capacitor keep sealing state.
When storing environment and manufacturing environment humidity is higher, can before slitting diaphragm, a conventional oven can be used barrier film at 90 DEG C ~ 110 DEG C dry 8 ~ 12 hours.
Above content is detailed description made for the present invention in conjunction with specific embodiments, can not assert that the present invention specifically implements to be only limitted to these explanations.For those skilled in the art, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to the scope of protection of the invention.
Claims (6)
1. a ultracapacitor manufacture method, is characterized in that, comprises the following steps:
Step one, prepare pole piece: all first apply one deck conducting resinl through the aluminum foil current collector two sides of electrochemical corrosion, then by the mixture that active material, electric conducting material and binder solution form, be coated in aluminium foil two sides;
Step 2, pole piece are cold rolling: by the pole piece for preparing by cold-rolling mill, active material mixture is evenly distributed closely knit;
Step 3, pole piece are dry: pole piece is put into vacuum drying oven, deflates, vacuum degree to < 20Pa, nitrogen injection, air pressure returns to an atmospheric pressure, is incubated 8 ~ 12 hours at being warming up to 130 DEG C ~ 140 DEG C;
Step 4, cut pole piece and barrier film: pole piece and barrier film are divided into suitable width;
Step 5, make electrode cores: use two volume pole piece rolls, two volume membrane coil are coiled into electrode cores, the alternate insertion of pole piece, barrier film;
Step 6, welding: use ultrasonic bond or laser the aluminum foil current collector at leading-out terminal and electrode cores two ends to be welded;
Step 7, assembling: the electrode cores of having welded leading-out terminal is loaded in shell;
Step 8, fluid injection: extract the gas inject electrolyte in shell out;
Step 9, leave standstill: by under ultracapacitor leave standstill 8 ~ 12 hours, make electrolyte fully infiltrate between the space of active material;
Step 10, fluid infusion: carry out a fluid infusion to ultracapacitor, fill up the vacancy of the electrolyte infiltrating space;
Step 11, sealing: shutoff or remove liquid injection port reserved on capacitor, make capacitor keep sealing state.
2. a kind of ultracapacitor manufacture method as claimed in claim 1, is characterized in that, the assembling in described step 7 to described step 9, fluid injection and standing operation are all carried out in the normal temperature confined space being full of nitrogen.
3. a kind of ultracapacitor manufacture method as claimed in claim 1, is characterized in that, barrier film is temperature-resistant material barrier film, and barrier film is together dry with pole piece before cutting, or before cutting, uses a conventional oven at 100 DEG C ~ 130 DEG C dry 8 ~ 12 hours separately.
4. a kind of ultracapacitor manufacture method as claimed in claim 3, it is characterized in that, described temperature-resistant material barrier film be cellulosic separator, fibreglass diaphragm, thermoplastic resin and paper pulp fiber make barrier film, Teflon septum, polyimide diaphragm, containing TiO
2polyimide diaphragm or aromatic polyimide fibre and cellulose mixtures barrier film.
5. a kind of ultracapacitor manufacture method as claimed in claim 1, is characterized in that, barrier film is not temperature-resistant material barrier film, and barrier film uses a conventional oven at 90 DEG C ~ 110 DEG C dry 8 ~ 12 hours separately before cutting.
6. a kind of ultracapacitor manufacture method as claimed in claim 5, is characterized in that, described not temperature-resistant material barrier film is porous polypropylene barrier film or polyethylene diagrams.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510273150.4A CN105047429B (en) | 2015-05-26 | 2015-05-26 | A kind of ultracapacitor manufacture method |
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| CN201510273150.4A CN105047429B (en) | 2015-05-26 | 2015-05-26 | A kind of ultracapacitor manufacture method |
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| CN105047429A true CN105047429A (en) | 2015-11-11 |
| CN105047429B CN105047429B (en) | 2017-07-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110867328A (en) * | 2018-08-28 | 2020-03-06 | 深圳长城开发科技股份有限公司 | Roll core, preparation method of supercapacitor and roll core production equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101562078A (en) * | 2009-05-15 | 2009-10-21 | 深圳清华大学研究院 | Super-capacitor and preparation method thereof |
| CN201904226U (en) * | 2010-12-20 | 2011-07-20 | 天津力神电池股份有限公司 | Novel drying system for super capacitors |
| CN102332354A (en) * | 2010-12-31 | 2012-01-25 | 东莞新能源科技有限公司 | Super capacitor, pole piece thereof and pole piece fabrication method |
| CN102683034A (en) * | 2012-04-28 | 2012-09-19 | 中国科学院电工研究所 | Method for preparing super capacitor electrode plate |
| CN102945753A (en) * | 2012-11-16 | 2013-02-27 | 双登集团股份有限公司 | Drying method of organic supercapacitor pole piece |
| CN103745840A (en) * | 2013-12-13 | 2014-04-23 | 宁波南车新能源科技有限公司 | Drying method and drying device for supercapacitor |
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2015
- 2015-05-26 CN CN201510273150.4A patent/CN105047429B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101562078A (en) * | 2009-05-15 | 2009-10-21 | 深圳清华大学研究院 | Super-capacitor and preparation method thereof |
| CN201904226U (en) * | 2010-12-20 | 2011-07-20 | 天津力神电池股份有限公司 | Novel drying system for super capacitors |
| CN102332354A (en) * | 2010-12-31 | 2012-01-25 | 东莞新能源科技有限公司 | Super capacitor, pole piece thereof and pole piece fabrication method |
| CN102683034A (en) * | 2012-04-28 | 2012-09-19 | 中国科学院电工研究所 | Method for preparing super capacitor electrode plate |
| CN102945753A (en) * | 2012-11-16 | 2013-02-27 | 双登集团股份有限公司 | Drying method of organic supercapacitor pole piece |
| CN103745840A (en) * | 2013-12-13 | 2014-04-23 | 宁波南车新能源科技有限公司 | Drying method and drying device for supercapacitor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110867328A (en) * | 2018-08-28 | 2020-03-06 | 深圳长城开发科技股份有限公司 | Roll core, preparation method of supercapacitor and roll core production equipment |
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| CN105047429B (en) | 2017-07-25 |
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