CN109326443A - A kind of new-energy automobile quick charging system thin film capacitor - Google Patents
A kind of new-energy automobile quick charging system thin film capacitor Download PDFInfo
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- CN109326443A CN109326443A CN201811307594.5A CN201811307594A CN109326443A CN 109326443 A CN109326443 A CN 109326443A CN 201811307594 A CN201811307594 A CN 201811307594A CN 109326443 A CN109326443 A CN 109326443A
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- Prior art keywords
- new
- charging system
- energy automobile
- thin film
- quick charging
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- 239000003990 capacitor Substances 0.000 title claims abstract description 51
- 239000010409 thin film Substances 0.000 title claims abstract description 29
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 45
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 44
- 238000000576 coating method Methods 0.000 claims abstract description 43
- 239000011248 coating agent Substances 0.000 claims abstract description 42
- 239000004411 aluminium Substances 0.000 claims abstract description 19
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 19
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052751 metal Inorganic materials 0.000 claims abstract description 19
- 239000002184 metal Substances 0.000 claims abstract description 19
- 210000002469 basement membrane Anatomy 0.000 claims abstract description 12
- 239000011104 metalized film Substances 0.000 claims abstract description 12
- 238000005507 spraying Methods 0.000 claims abstract description 5
- 238000004804 winding Methods 0.000 claims abstract description 5
- 239000010408 film Substances 0.000 claims description 43
- -1 polypropylene Polymers 0.000 claims description 34
- 150000001336 alkenes Chemical class 0.000 claims description 33
- 239000004743 Polypropylene Substances 0.000 claims description 32
- 229920001155 polypropylene Polymers 0.000 claims description 32
- 238000002347 injection Methods 0.000 claims description 18
- 239000007924 injection Substances 0.000 claims description 18
- 239000000843 powder Substances 0.000 claims description 14
- 229910052724 xenon Inorganic materials 0.000 claims description 14
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 claims description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 238000001771 vacuum deposition Methods 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 2
- 238000001465 metallisation Methods 0.000 claims 1
- 230000001737 promoting effect Effects 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 9
- 230000006872 improvement Effects 0.000 description 8
- 239000010410 layer Substances 0.000 description 7
- 239000002245 particle Substances 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/33—Thin- or thick-film capacitors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/005—Electrodes
- H01G4/008—Selection of materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/32—Wound capacitors
Abstract
The present invention relates to a kind of new-energy automobile quick charging system thin film capacitors, capacitor core including capacitor case and inside capacitor case, the capacitor core is made of impact resistance metallized film by winding, metal spraying, the impact resistance metallized film includes insulating basement membrane, the insulating basement membrane is provided with graphene coating on one side, and the surface of the graphene coating is provided with aluminium coat.Impact property, short-circuit charge and discharge and the proof voltage that the new-energy automobile quick charging system thin film capacitor is resistant to electric current can all be much better than common metal thin film capacitor, calorific value is small, long service life, it can be reliably employed in new-energy automobile quick charging system, there is great promotional value.
Description
Technical field
The present invention relates to a kind of new-energy automobile quick charging system thin film capacitors, belong to capacitor technology field.
Background technique
With the finiteness of conventional energy resource and becoming increasingly conspicuous for environmental problem, the utilization of new energy is by effective exploitation
It utilizes.And representative of the new-energy automobile as current new energy project, gradually sufficiently developed.New-energy automobile it is general
And it be unable to do without quick charging system.With the continuous development of rapid nitriding, in new-energy automobile quick charging system,
Thin film capacitor needs the capacitor to meet the days such as capacitance is big, proof voltage is high, high resistance to rush of current performance as energy-storage travelling wave tube
The technical requirements that benefit increases, and in existing metallic film capacitor, metallized film usually passes through vacuum in polypropylene surface
Aluminium metal coating is made in coating process, and the electric conductivity of metallic aluminium is limited, and the sheet resistance of metallized film is higher, once charge and discharge
Electric current it is excessive i.e. easily fever, so that capacitor be easily caused to overheat, safety accident finally occurs.
Summary of the invention
The present invention is in view of the deficienciess of the prior art, provide a kind of new-energy automobile quick charging system thin-film electro
Container, specific technical solution are as follows:
A kind of new-energy automobile quick charging system thin film capacitor, including capacitor case and be located at capacitor case
Internal capacitor core, the capacitor core are made of impact resistance metallized film by winding, metal spraying, the impact resistance metal
Changing film includes insulating basement membrane, and the insulating basement membrane is provided with graphene coating on one side, and the surface of the graphene coating is set
It is equipped with aluminium coat.
As an improvement of the above technical solution, the insulating basement membrane is polypropylene film.
As an improvement of the above technical solution, the production method of the graphene coating are as follows: polypropylene film is sent into and is plated
Film room, the inside of coating chamber are continually fed into nitrogen, and the air pressure inside coating chamber is maintained at 101.8~102.2kPa；The plated film
Room is internally provided with chill roll and injection pipe, and the surface of chill roll is arranged in the injection pipe, the polypropylene film
Back side pile warp chill roll, the nozzle of the injection pipe faces the front of polypropylene film and the nozzle of injection pipe ejects high temperature
Graphene jet stream, the pyrographite alkene jet stream are the air-flow that high temperature xenon is mingled with graphene powder；Pyrographite alkene jet stream
When being ejected into the front of polypropylene film, a part of pyrographite alkene powder in pyrographite alkene jet stream hits polypropylene film
Front to forming graphene coating.
As an improvement of the above technical solution, the temperature of the pyrographite alkene jet stream is 330~350 DEG C.
As an improvement of the above technical solution, in pyrographite alkene jet stream, it is mingled with 0.21~0.23g in every liter of xenon
Graphene powder.
As an improvement of the above technical solution, at the injection pipe nozzle pyrographite alkene jet stream flow velocity be 8.5~
8.9m/s。
7, a kind of new-energy automobile quick charging system thin film capacitor according to claim 3, feature exist
In: the partial size of the graphene powder is less than or equal to 80nm.
As an improvement of the above technical solution, the cooling temperature of the cooling roller surface is 3~6 DEG C.
As an improvement of the above technical solution, the production method of the aluminium coat are as follows: by technique for vacuum coating in graphite
The surface of alkene coating is coated with aluminium coat.
Beneficial effects of the present invention:
The new-energy automobile quick charging system be resistant to thin film capacitor the impact property of electric current, short-circuit charge and discharge and
Proof voltage can all be much better than common metal thin film capacitor, and calorific value is small, long service life, can be reliably employed in new
Energy automobile quick charging system has great promotional value.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of new-energy automobile quick charging system thin film capacitor of the present invention；
Fig. 2 is chill roll of the present invention, injection pipe, distribution schematic diagram between insulating basement membrane.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Embodiment 1
As shown in Figure 1, the new-energy automobile quick charging system thin film capacitor, including capacitor case and it is located at
Capacitor core inside capacitor case, the capacitor core is made of impact resistance metallized film by winding, metal spraying, described
Impact resistance metallized film includes insulating basement membrane 10, and the insulating basement membrane 10 is provided with graphene coating 20, the stone on one side
The surface of black alkene coating 20 is provided with aluminium coat 30.Wherein, the insulating basement membrane 10 is polypropylene film.
The production method of the graphene coating 20 are as follows: polypropylene film is sent into coating chamber, the inside of coating chamber continues
It is passed through nitrogen, the air pressure inside coating chamber is maintained at 101.8~102.2kPa；The coating chamber is internally provided with chill roll 1
With injection pipe 2, as shown in Fig. 2, the surface of chill roll 1, the back side pile warp of the polypropylene film is arranged in the injection pipe 2
Chill roll 1, the nozzle of the injection pipe 2 faces the front of polypropylene film and the nozzle of injection pipe 2 ejects pyrographite
Alkene jet stream, the pyrographite alkene jet stream are the air-flow that high temperature xenon is mingled with graphene powder；The injection of pyrographite alkene jet stream
When to the front of polypropylene film, a part of pyrographite alkene powder in pyrographite alkene jet stream is hitting polypropylene film just
Face is to form graphene coating 20.Wherein, the temperature of the pyrographite alkene jet stream is 330~350 DEG C.In pyrographite alkene
In jet stream, 0.21~0.23g graphene powder is mingled in every liter of xenon.Pyrographite alkene jet stream at 2 nozzle of injection pipe
Flow velocity be 8.5~8.9m/s.The partial size of the graphene powder is less than or equal to 80nm.The cooling on 1 surface of chill roll
Temperature is 3~6 DEG C.
The production method of the aluminium coat 30 are as follows: aluminium plating is coated on the surface of graphene coating 20 by technique for vacuum coating
Layer 30.
In the present embodiment, the graphene coating 20 and aluminium coat 30 constitute conductive layer, and the sheet resistance of the conductive layer is
0.56~0.71 Ω/◇.
The both ends of the new-energy automobile quick charging system thin film capacitor are applied DC voltage 1 second of 2000V,
Then short circuit dischange 0.5 second.Increment and the electric capacitance change for observing the loss tangent of capacitor are as follows:
1), after short-circuit charge and discharge number 85000 times, which is still worked normally, and electrical property is good；Such as short-circuit charge and discharge
After electric number 85000 times, under the test frequency of 1KHz, δ≤0.0003 Δ tg is measured；Δ C/C≤4.7%.
2), dc breakdown voltage is greater than >=5000V.
Embodiment 2
Ordinary capacitor core in common metal thin film capacitor is by common metal film by winding, metal spraying system
At common metal film is that aluminium metal coating is made using technique for vacuum coating by the one side in polypropylene film；Wherein,
The thickness of aluminium metal coating is equal to the thickness of conductive layer in embodiment 1.The sheet resistance of aluminium metal coating is 12~16 Ω/◇.
2000V DC voltage 1 second are applied to the both ends of common metal thin film capacitor, then short circuit dischange 0.5 second.It sees
Increment and the electric capacitance change for examining the loss tangent of capacitor are as follows:
1), after short-circuit charge and discharge number 500 times, extensive breakdown occurs for common metal film, which has reported
It is useless！
2), dc breakdown voltage≤1800V.
In the above-described embodiments, by comparative example 1 and embodiment 2: with existing common metallized film phase
Than conductive layer in new-energy automobile quick charging system thin film capacitor of the present invention, in impact resistance metallized film
Sheet resistance it is small, under the electricity of identical charge and discharge, the heat of the generation of the conductive layer is small；Therefore, the impact resistance metal
Changing film can be resistant to the impact of more high current；Also, either short-circuit charge and discharge or proof voltage, are all much better than common metal
Change thin film capacitor；Therefore new-energy automobile quick charging system thin film capacitor of the present invention can be reliably employed in
In the circuit of the quick charging systems such as new-energy automobile quick charging system.
In impact resistance metallized film, the ingredient of graphene coating 20 is graphene, and the electric conductivity of graphene is far excellent
In metallic aluminium.And in the manufacturing process of graphene coating 20, the nitrogen that the inside of coating chamber is continually fed into is protection gas, can
Graphene is prevented to be oxidized.Air pressure inside coating chamber is greater than atmospheric pressure, this makes extraneous air not enter coating chamber
It is internal.The xenon is compressed into compression xenon, by being heated into high temperature compressed xenon, which is passed through and is equipped with
The storage room of graphene powder is pyrographite alkene jet stream, pyrographite alkene jet stream from the air-flow that storage room outlet sprays
When being ejected into the front of polypropylene film, high temperature xenon can make the front of polypropylene film be softened, and graphene is also heat
Excellence conductor, therefore pyrographite alkene particles hit can make instant melting at shock to the front of polypropylene film, with graphite
Alkene particles hit deepens continuously, and the heat of graphene particles itself is constantly lost, along with the polypropylene film back side is cooled
Roller 1 is persistently cooling, so completes the combination between graphene particles and polypropylene film.Pass through strict control pyrographite alkene
1 table of flow velocity and chill roll of the content of graphene powder in the temperature of jet stream, pyrographite alkene jet stream, pyrographite alkene jet stream
The cooling temperature in face is finally made graphene coating 20.Wherein, the nozzle and polypropylene film of strict control injection pipe 2 are also needed
Minimum range between front is 2~3mm.Using the reason of xenon be because are as follows: xenon is inert gas, further protects graphite
Alkene is not oxidized, and xenon density is much larger than nitrogen, this is conducive to the polypropylene that xenon finally falls in underlying injection pipe 2
The front of film.
In the present invention, coverage rate of the graphene on polypropylene film surface is 55%~68%.The coverage rate
Measurement method it is as follows: utilize optically focused light irradiation polypropylene film, after polypropylene film the light intensity of light be X；Poly- third
The front of alkene film is coated with graphene coating 20, the back side of polypropylene film is covered to the socket of spotlight at this time, due to stone
The covering of black alkene coating 20, through the light intensity decreasing of graphene coating 20, the light intensity through graphene coating 20 be Y, X and Y it
Between difference be X-Y, the percentage of ratio is coverage rate between X-Y and X.Since graphene is only on polypropylene film surface
It is covered with very sparse one layer, then can not only be significantly reduced in such a way that aluminium coat 30 covers graphene coating 20 again
The dosage of graphene advantageously reduces production cost, and 30 surface of aluminium coat will form fine and close aluminum oxide film protective layer,
This effectively prevent conductive layer to be further oxided corrosion, is conducive to the service life for improving impact resistance metallized film.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (9)
1. a kind of new-energy automobile quick charging system thin film capacitor, including capacitor case and it is located in capacitor case
The capacitor core in portion, the capacitor core are made of impact resistance metallized film by winding, metal spraying, the impact resistance metallization
Film includes insulating basement membrane, it is characterised in that: the insulating basement membrane is provided with graphene coating, the graphene coating on one side
Surface be provided with aluminium coat.
2. a kind of new-energy automobile quick charging system thin film capacitor according to claim 1, it is characterised in that: institute
Stating insulating basement membrane is polypropylene film.
3. a kind of new-energy automobile quick charging system thin film capacitor according to claim 2, it is characterised in that: institute
The production method for stating graphene coating are as follows: polypropylene film is sent into coating chamber, the inside of coating chamber is continually fed into nitrogen, plated film
The air pressure of chamber interior is maintained at 101.8~102.2kPa；The coating chamber is internally provided with chill roll and injection pipe, the spray
Penetrate the surface that chill roll is arranged in pipe, the back side pile warp chill roll of the polypropylene film, the nozzle face of the injection pipe
The front of polypropylene film and the nozzle of injection pipe eject pyrographite alkene jet stream, the pyrographite alkene jet stream is high temperature
Xenon is mingled with the air-flow of graphene powder；When pyrographite alkene jet stream is ejected into the front of polypropylene film, pyrographite alkene
A part of pyrographite alkene powder in jet stream hits the front of polypropylene film to form graphene coating.
4. a kind of new-energy automobile quick charging system thin film capacitor according to claim 3, it is characterised in that: institute
The temperature for stating pyrographite alkene jet stream is 330~350 DEG C.
5. a kind of new-energy automobile quick charging system thin film capacitor according to claim 3, it is characterised in that:
In pyrographite alkene jet stream, 0.21~0.23g graphene powder is mingled in every liter of xenon.
6. a kind of new-energy automobile quick charging system thin film capacitor according to claim 5, it is characterised in that: institute
The flow velocity for stating pyrographite alkene jet stream at injection pipe nozzle is 8.5~8.9m/s.
7. a kind of new-energy automobile quick charging system thin film capacitor according to claim 3, it is characterised in that: institute
The partial size for stating graphene powder is less than or equal to 80nm.
8. a kind of new-energy automobile quick charging system thin film capacitor according to claim 3, it is characterised in that: institute
The cooling temperature for stating cooling roller surface is 3~6 DEG C.
9. a kind of new-energy automobile quick charging system thin film capacitor according to claim 1, it is characterised in that: institute
The production method for stating aluminium coat are as follows: aluminium coat is coated on the surface of graphene coating by technique for vacuum coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811307594.5A CN109326443B (en) | 2018-11-05 | 2018-11-05 | Film capacitor for new energy automobile quick charge system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811307594.5A CN109326443B (en) | 2018-11-05 | 2018-11-05 | Film capacitor for new energy automobile quick charge system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109326443A true CN109326443A (en) | 2019-02-12 |
| CN109326443B CN109326443B (en) | 2020-08-04 |
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ID=65259927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811307594.5A Active CN109326443B (en) | 2018-11-05 | 2018-11-05 | Film capacitor for new energy automobile quick charge system |
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| Country | Link |
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| CN (1) | CN109326443B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110364358A (en) * | 2019-08-08 | 2019-10-22 | 安徽省宁国市海伟电子有限公司 | A kind of high conductivity anti-explosion safety film |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105417538A (en) * | 2016-01-11 | 2016-03-23 | 王惠丽 | Method for preparing graphene through jet flow pretreatment |
| CN106206015A (en) * | 2016-08-27 | 2016-12-07 | 安徽省宁国市海伟电子有限公司 | A kind of high temperature polypropylene metallized film |
| CN107275085A (en) * | 2017-05-24 | 2017-10-20 | 南京理工大学 | A kind of graphene-based high-voltage pulse thin film capacitor |
-
2018
- 2018-11-05 CN CN201811307594.5A patent/CN109326443B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105417538A (en) * | 2016-01-11 | 2016-03-23 | 王惠丽 | Method for preparing graphene through jet flow pretreatment |
| CN106206015A (en) * | 2016-08-27 | 2016-12-07 | 安徽省宁国市海伟电子有限公司 | A kind of high temperature polypropylene metallized film |
| CN107275085A (en) * | 2017-05-24 | 2017-10-20 | 南京理工大学 | A kind of graphene-based high-voltage pulse thin film capacitor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110364358A (en) * | 2019-08-08 | 2019-10-22 | 安徽省宁国市海伟电子有限公司 | A kind of high conductivity anti-explosion safety film |
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| CN109326443B (en) | 2020-08-04 |
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Address after: 244000, Floor 1, Building 15, Science and Technology Innovation Park, East of Tongjingshan Avenue and North of Tongjing East Road, Shizishan High tech Zone, Tongguan District, Tongling City, Anhui Province Patentee after: Tongling Chaoyue Electronics Co.,Ltd. Country or region after: China Address before: 244000 No. 1111, east section of Weiyi Road, Shizishan District, Tongling City, Anhui Province (1 plant and 2 warehouse) Patentee before: TONGLING BEYOND ELECTRONICS Co.,Ltd. Country or region before: China |