CN202093989U - Electrolytic capacitor aluminium casing - Google Patents
Electrolytic capacitor aluminium casing Download PDFInfo
- Publication number
- CN202093989U CN202093989U CN2011201377882U CN201120137788U CN202093989U CN 202093989 U CN202093989 U CN 202093989U CN 2011201377882 U CN2011201377882 U CN 2011201377882U CN 201120137788 U CN201120137788 U CN 201120137788U CN 202093989 U CN202093989 U CN 202093989U
- Authority
- CN
- China
- Prior art keywords
- aluminum hull
- electrolytic capacitor
- capacitor
- aluminium casing
- dielectric film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The utility model provides an electrolytic capacitor aluminium casing which is provided with an aluminium casing body (2). The inner wall of the aluminium casing body is provided with an insulating film (1). The electrolytic capacitor is provided with the insulating film on the inner wall of the aluminium casing, and the film can prevent the inner wall of the aluminium casing from directly contacting with positive and negative poles in a capacitor core, thus preventing the short circuit of the capacitor. As a result, under the condition that the external diameter of the aluminium casing and the overpressure resistant requirement remain unchanged, the capacitance can rise by 40% along with the enlargement of the capacitor core of the electrolytic capacitor.
Description
Technical field
The aluminum hull of a kind of electrolytic capacitor that the utility model relates to belongs to capacitor technology field in the electricity.
Background technology
Electrolytic capacitor is to be made of aluminum hull, capacitor core and Jiao Gai.Wherein capacitor core is to be overlapped for 4 layers by anode metal paper tinsel, electrolytic paper, cathodic metal paper tinsel, electrolytic paper etc. to reel, and handles forming again through impregnation electrolyte.The aluminum hull of electrolytic capacitor is the shell of electrolytic capacitor, has protection capacitor core, isolated capacitor core and extraneous effect.The aluminum hull of electrolytic capacitor of the prior art is stamped to form by aluminium, its inwall does not have insulating capacity, therefore electrolytic capacitor when assembling around the capacitor core must and the inwall of aluminum hull between remaining bigger spacing distance, produce the crooked aluminum hull inwall of running into to prevent the possible capacitor core that causes because of installation accuracy is not high.Capacitor core contacts with aluminum hull and then can make aluminum hull make faults such as capacitor core short circuit.
Summary of the invention
At above-mentioned deficiency, technical problem to be solved in the utility model is to stop capacitor core because of contacting short circuit with aluminum hull, thereby the aluminum hull of the electrolytic capacitor that a kind of inwall insulate is provided.
The aluminum hull of electrolytic capacitor of the present utility model has the aluminum hull body, on the inwall of aluminum hull body dielectric film is arranged.
Electrolytic capacitor of the present utility model has one deck dielectric film at the aluminum hull inwall, utilizes this tunic can stop aluminum hull inner body wall negative and positive the two poles of the earth direct and in the capacitor core to contact and make capacitor generation short circuit.Therefore, use the utility model aluminum hull can make around the capacitor core and the spacing distance between the aluminum hull inwall dwindles, even can narrow down to zero.Also promptly in keeping capacitor core, under the situation of electrode area constant (constancy of volume of capacitor core), can dwindle the external diameter of aluminum hull, or keep the aluminum hull size constant, can increase the volume of capacitor core.Experiment also shows, if the aluminum hull external diameter is constant and under same requirement of withstand voltage, capacitor core can expand to and make capacitance promote 40% in the electrolytic capacitor.Therefore, can realize improving capacitance under the equal-volume and can preventing capacitor short-circuit.Ask little and thickness to ask day by day under the thin situation day by day in the size of present various electronic systems (product), the utility model can have been untied the restriction of the bigger volume of existing electrolytic capacitor to the development of littleizationr of electronic product keeping function and performance not to lose the overall dimensions of dwindling electrolytic capacitor on the basis of previous level.
The aluminum hull of electrolytic capacitor of the present utility model, the dielectric film on the said aluminum hull inner body wall face is a coating.
The aluminum hull of electrolytic capacitor of the present utility model, said dielectric film coating layer thickness between 5～25 μ m, 8 μ m preferably.
The aluminum hull of electrolytic capacitor of the present utility model, the dielectric film on the said aluminum hull inner body wall face are one to stick with glue the dielectric film that the agent layer connects.
The aluminum hull of electrolytic capacitor of the present utility model, the dielectric film on the said aluminum hull inner body wall face is the erosion resisting insulation film, to avoid aluminum hull body and electrolyte generation chemical reaction, improves useful life.
Said erosion resisting insulation film serves as main the composition with synthetic resin or fluoroplastics or fluorubber, and all the other are coalescents.
Said erosion resisting insulation membrane coat is by 48～56% polyurethane polyol, 38.6～47% mixed solvent, 2.7～3.5% the polyester capacitor aluminum housing coating paint formed of modified dimethyl polysiloxane, 0.28～0.34% polyether-modified polysiloxane, 0.18～0.24 organosilicon and 1.44～1.72% silane altogether, wherein percentage is mass percent, and said mixed solvent is heavily mixed for 30～40 parts by 60～70 parts heavy of ethyl ketones and ketone.
Description of drawings
Fig. 1 is the structure chart of the utility model one embodiment, among the figure: 1-dielectric film, 2-aluminum hull body, 3-dielectric film.
Embodiment
1, the aluminum hull of an electrolytic capacitor sticks with glue agent and posts one deck dielectric film on the internal face of aluminum hull body.
2, the aluminum hull of an electrolytic capacitor all scribbles one deck erosion resisting insulation film 1,3 on the inside and outside wall of aluminum hull body 2.Manufacturing process is respectively to be coated with the last layer erosion resisting insulation on the two sides of aluminium sheet earlier to film, and polyurethane polyol 48.4% is arranged, surperficial slip agent 3.5% during erosion resisting insulation is filmed, levelling agent 0.32%, defoamer 0.18%, adhesion promoter 1.6%, ethyl ketone 30%, ketone 16%.The aluminum hull that the electrolytic capacitor that erosion resisting insulation films is all arranged inside and outside the punching out of aluminium sheet pull and stretch being formed again.
3, the aluminum hull of an electrolytic capacitor scribbles one deck erosion resisting insulation film on the internal face of aluminum hull body, coating composition is an epoxy resin.
4, the aluminum hull of an electrolytic capacitor, the erosion resisting insulation film on the aluminum hull inner body wall are with sticking multiple nylon membrane behind the gluing.
5, the aluminum hull of an electrolytic capacitor, the erosion resisting insulation film on the aluminum hull inner body wall is a teflon coatings.
Claims (6)
1. the aluminum hull of an electrolytic capacitor has the aluminum hull body, it is characterized in that on the inwall of aluminum hull body dielectric film being arranged.
2. the aluminum hull of electrolytic capacitor as claimed in claim 1 is characterized in that the dielectric film on the said aluminum hull inner body wall face is a coating.
3. the aluminum hull of electrolytic capacitor as claimed in claim 2 is characterized in that said dielectric film coating layer thickness is between 5 ~ 25 μ m.
4. the aluminum hull of electrolytic capacitor as claimed in claim 2 is characterized in that said dielectric film coating layer thickness is 8 μ m.
5. the aluminum hull of electrolytic capacitor as claimed in claim 1 is characterized in that dielectric film on the said aluminum hull inner body wall face is one to stick with glue the dielectric film of agent layer bonding.
6. as the aluminum hull of claim 1 or 2 or 5 described electrolytic capacitors, it is characterized in that the dielectric film on the said aluminum hull inner body wall face is the erosion resisting insulation film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201377882U CN202093989U (en) | 2011-05-04 | 2011-05-04 | Electrolytic capacitor aluminium casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201377882U CN202093989U (en) | 2011-05-04 | 2011-05-04 | Electrolytic capacitor aluminium casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202093989U true CN202093989U (en) | 2011-12-28 |
Family
ID=45369039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201377882U Expired - Lifetime CN202093989U (en) | 2011-05-04 | 2011-05-04 | Electrolytic capacitor aluminium casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202093989U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102184782A (en) * | 2011-01-29 | 2011-09-14 | 舟山市新龙电子设备有限公司 | Aluminum casing for electrolytic capacitor |
-
2011
- 2011-05-04 CN CN2011201377882U patent/CN202093989U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102184782A (en) * | 2011-01-29 | 2011-09-14 | 舟山市新龙电子设备有限公司 | Aluminum casing for electrolytic capacitor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102184782A (en) | Aluminum casing for electrolytic capacitor | |
| Si et al. | On chip, all solid-state and flexible micro-supercapacitors with high performance based on MnO x/Au multilayers | |
| Dey et al. | Approaching the theoretical capacitance of graphene through copper foam integrated three-dimensional graphene networks | |
| TWI470658B (en) | All solid-state electrochemical double layer supercapacitor | |
| US8305733B2 (en) | Super-capacitor electrode | |
| JP2021145135A (en) | Electrolytic capacitor and manufacturing method therefor | |
| CN101740236B (en) | Method of manufacturing solid electrolytic capacitor | |
| TW201205615A (en) | Solid electrolytic capacitor and method for manufacturing solid electrolytic capacitor | |
| US7732098B2 (en) | Lead acid battery having ultra-thin titanium grids | |
| Keskinen et al. | Architectural modifications for flexible supercapacitor performance optimization | |
| JP2012064601A (en) | Aluminum electrolytic capacitor | |
| TWI342030B (en) | Electrode member for capacitor and method for manufacturing the same, and capacitor including the electrode member | |
| CN107210133B (en) | Electrolytic capacitor and its manufacturing method | |
| CN104934224B (en) | A kind of aluminium electrolutic capacitor | |
| CN106463265B (en) | Electrolytic capacitor and its manufacturing method | |
| CN202093989U (en) | Electrolytic capacitor aluminium casing | |
| CN203085371U (en) | Aluminium electrolytic capacitor | |
| CN116504988A (en) | Composite current collector, preparation method thereof and lithium ion battery | |
| US10784049B2 (en) | Winding-type stacked body for condenser with high electrostatic capacitance and stacked winding-type condenser using the same | |
| WO2008106533A1 (en) | Ultracapacitor collector and/or package with controlled magnesium content | |
| CN203456293U (en) | Single-surface aluminum-and-zinc metalized film with single reserved edge | |
| TWI546831B (en) | Carbon electrode for electric double layer capacitor, fabrication method thereof, and electric double layer capacitor | |
| CN201503716U (en) | Single side enameled self-adhesive transposition wire | |
| CN103400945A (en) | Housing of cylindrical capacitance-type lithium ion battery | |
| CN207441482U (en) | A kind of polymer chip-type laminated solid aluminum electrolytic capacitor of high moisture-proof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111228 |
|
| CX01 | Expiry of patent term |