CN202093988U - Aluminium electrolytic capacitor specifically used for ultralow temperature LED driving power supply - Google Patents
Aluminium electrolytic capacitor specifically used for ultralow temperature LED driving power supply Download PDFInfo
- Publication number
- CN202093988U CN202093988U CN2011201792508U CN201120179250U CN202093988U CN 202093988 U CN202093988 U CN 202093988U CN 2011201792508 U CN2011201792508 U CN 2011201792508U CN 201120179250 U CN201120179250 U CN 201120179250U CN 202093988 U CN202093988 U CN 202093988U
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- China
- Prior art keywords
- electrolytic capacitor
- guide pin
- housing
- aluminium electrolytic
- low temperature
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Abstract
The utility model discloses an aluminium electrolytic capacitor specifically used for an ultralow temperature LED driving power supply. The aluminium electrolytic capacitor includes a housing, a guide pin, and an electrode foil. The guide pin is inserted into the housing to connect with the electrode foil. The top of the housing where the guide pin is arranged is provided with an EPMD rubber cover. The periphery of the housing is provided with a layer of insulating rubber cover. Because of the arrangement of a compact and thick A12O3 film on the surface of the electrode foil and the cooperation with a high purity cathode foil and the guide pin, the electrical conductivity of a material is improved, and consequently the equivalent series impedance is greatly reduced in a low temperature environment. Because of the arrangement of the EPMD rubber cover, the rubber cover can resist the oxidation, the ozone, and the solvent corrosion, and has the excellent low temperature elasticity, thus guaranteeing the low temperature tightness of the capacitor, effectively preventing the electrolyte leakage phenomenon caused by the poor sealing, and consequently guaranteeing the stable and reliable working of a product in a low temperature environment.
Description
Technical field
The utility model relates to a kind of aluminium electrolytic capacitor, specifically is the aluminium electrolytic capacitor of a kind of ultralow temperature LED driving power special use.
Background technology
At present, be limited to-55 ℃ under the minimum aluminium electrolytic capacitor serviceability temperature of industry, along with the universal and LED driving power more and more higher quality requirements of LED lamp at extremely frigid zones, such lowest temperature can not satisfy the demand in market.When product in the market uses in low temperature environment, following problem mainly occurs: the low temperature impedance operator is poor, and the equivalent series resistance value is big; Electrolyte is prone to and solidifies and phenomenon is separated out in crystallization; Jiao Gai is easily aging to cause air-tightness to worsen.
Summary of the invention
In order to overcome above-mentioned deficiency, the utility model purpose is to provide the aluminium electrolytic capacitor of the ultralow temperature LED driving power special use of a kind of stable work in work, long service life.
To achieve these goals, the technical solution adopted in the utility model is: the aluminium electrolytic capacitor of a kind of ultralow temperature LED driving power special use, include housing, guide pin, electrode foil, guide pin inserts in the housing and is connected with electrode foil, and the top of described housing and the position that is positioned at the guide pin installation are provided with Jiao Gai.
Described Jiao Gai adopts EPMD Jiao Gai.
The periphery of described housing is provided with the gum cover of one deck insulation.
Described electrode foil is the electrode aluminium foil, and its surface is provided with one deck Al2O3 film.
The beneficial effects of the utility model: because the thicker Al2O3 film of one deck densification has been established on the electrode foil surface, cooperate highly purified Cathode Foil and guide pin, help to improve the electric conductivity of material, thereby under low temperature environment, greatly reduce equivalent series resistance; Owing to established EPMD Jiao Gai, Gu Jiaogai is except resistance to oxidation, anti-ozone, anti-solvent corrosion ability are strong, also has good low temperature elasticity, guarantee the low temperature seal of capacitor, effectively prevent because of poor sealing causes the excessive phenomenon of electrolyte, guarantee that product works more reliable and more stable in low temperature environment.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is a structural representation of the present utility model.
Among the figure: 1, gum cover; 2, housing; 3, guide pin; 4, Jiao Gai; 5, electrode foil.
Embodiment
As shown in Figure 1, the aluminium electrolytic capacitor of a kind of ultralow temperature LED driving power special use includes housing 2, guide pin 3, electrode foil 5, and guide pin 3 inserts in the housings 2 and is connected with electrode foil 5, and the top of described housing 2 and the position that is positioned at the guide pin installation are provided with glue and cover 4.
Described glue lid 4 adopts EPMD Jiao Gai.
The periphery of described housing 2 is provided with the gum cover 1 of one deck insulation.
Described electrode foil 5 is the electrode aluminium foil, and its surface is provided with one deck Al2O3 film.
Operation principle: aluminium electrolytic capacitor of the present utility model makes improvements simultaneously from selection and technology two aspects, has following characteristics:
(1) it is too high to overcome the low temperature impedance
The size of equivalent series resistance ESR is subjected to the influence of following factor: the 1. quality of anode oxide film; 2. the conductivity of electrode foil, lead-in wire and the contact resistance of the two; 3. the conductivity of electrolyte.
The utility model reduces the ESR value of product in the following manner:
(1) selection:
The utility model is selected high withstand voltage the hanging down than volume anode foil of high-purity for use, and this aluminium foil is more shallow with respect to high specific volume aluminium foil corrosion line, and after changing into through high pressure, the Al2O3 film of surface production is thick and fine and close, and insulating properties is good.Cooperate highly purified Cathode Foil and lead-in wire (guide pin), help to improve the electric conductivity of material.
(2) technology:
Before positive and negative paper tinsel nail joint, increase pretreatment process respectively, on aluminium foil, desire the aperture that the respective shapes size is gone out in nail joint place earlier, again with the guide pin nail joint at the aperture place, can avoid unnecessary paper tinsel bits to be mixed between nail joint petal and the aluminium foil, and guarantee the aluminium foil paperback compacting of linking closely of nail joint petal, thereby reduce the nail joint impedance.
(3) electrolytic conductivity:
Electrolyte shows on the conductivity of electrolyte solution the resistance of electric current, and is inversely proportional to conductivity, and the power of the conductive capability of electrolyte depends on the number of contained ion in the solution, the valence mumber of ionic charge and the speed that ion moves.Solvent of the present utility model has lower viscosity, helps to improve the ion rate travel, and solute is had stronger solvation effect, can dissolve solute well, increases contained ion populations in the solution.
The utility model guarantees product low temperature electrical characteristic by reducing the impedance of product, helps the LED driving power normally to start in low temperature environment.
(2) overcoming electrolyte ultralow temperature easily solidifies and separates out crystallization
Conducting medium between aluminum electrolysis capacitance cathode foil and the anode foils is an electrolyte, and electrolyte can be prone under the ultralow temperature situation and solidify and phenomenon that crystallization is separated out, sharply descends thereby cause the impedance of capacitor to increase considerably conductivity.The utility model is by reasonably combined main solvent and secondary solvent, obtain the low electrolyte of solidifying point, by suitable increase solute ratio, and add to inhale the hydrogen agent, press down aqua etc. and reduce saturated vapor pressure, further reduce the setting temperature of electrolyte, make product not only have good solution properties, and have electrical characteristic preferably, guarantee the job stability of product at-65 ℃.
(3) overcome the easy aging phenomenon of alminium electrolytic condenser Jiao Gai in the extreme low temperature environment
It is aging that Jiao Gai easily takes place in the extreme environment of high and cold high temperature aluminium electrolytic capacitor, causes products air tightness bad, and the volatilization of electrolysis, lost finally causes the life-span of aluminium electrolytic capacitor sharply to be decayed.
The EPMD Jiao Gai that the utility model is selected for use is except resistance to oxidation, anti-ozone, anti-solvent corrosion ability are strong, also has good low temperature elasticity, guarantee the low temperature seal of capacitor, effectively prevent because of poor sealing causes the excessive phenomenon of electrolyte, guarantee that structurally product can carry out work reliably in low temperature environment.
Claims (4)
1. the aluminium electrolytic capacitor of ultralow temperature LED driving power special use, include housing (2), guide pin (3), electrode foil (5), guide pin (3) inserts in the housing (2) and is connected with electrode foil (5), it is characterized in that: the top of described housing (2) and the position that is positioned at the guide pin installation are provided with Jiao Gai (4).
2. the aluminium electrolytic capacitor of ultralow temperature LED driving power according to claim 1 special use is characterized in that: described Jiao Gai (4) adopts EPMD Jiao Gai.
3. the aluminium electrolytic capacitor of ultralow temperature LED driving power according to claim 1 special use is characterized in that: the periphery of described housing (2) is provided with the gum cover (1) of one deck insulation.
4. the aluminium electrolytic capacitor of ultralow temperature LED driving power according to claim 1 special use is characterized in that: described electrode foil (5) is the electrode aluminium foil, and its surface is provided with one deck Al2O3 film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201792508U CN202093988U (en) | 2011-05-31 | 2011-05-31 | Aluminium electrolytic capacitor specifically used for ultralow temperature LED driving power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201792508U CN202093988U (en) | 2011-05-31 | 2011-05-31 | Aluminium electrolytic capacitor specifically used for ultralow temperature LED driving power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202093988U true CN202093988U (en) | 2011-12-28 |
Family
ID=45369038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201792508U Expired - Fee Related CN202093988U (en) | 2011-05-31 | 2011-05-31 | Aluminium electrolytic capacitor specifically used for ultralow temperature LED driving power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202093988U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104465105A (en) * | 2014-11-20 | 2015-03-25 | 上海永铭电子有限公司 | Low-temperature-resistant aluminum electrolytic capacitor |
| CN115036140A (en) * | 2022-06-24 | 2022-09-09 | 南通新三能电子有限公司 | Long-and-thin type long-life aluminum electrolytic capacitor |
-
2011
- 2011-05-31 CN CN2011201792508U patent/CN202093988U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104465105A (en) * | 2014-11-20 | 2015-03-25 | 上海永铭电子有限公司 | Low-temperature-resistant aluminum electrolytic capacitor |
| CN115036140A (en) * | 2022-06-24 | 2022-09-09 | 南通新三能电子有限公司 | Long-and-thin type long-life aluminum electrolytic capacitor |
| CN115036140B (en) * | 2022-06-24 | 2023-08-25 | 南通新三能电子有限公司 | Slender long-life aluminum electrolytic capacitor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHAOQING BERYL ELECTRONIC TECHNOLOGY CO., LTD. Free format text: FORMER NAME: ZHAOQING BERYL ELECTRONIC CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 526020, Guangdong, Zhaoqing Duanzhou District, Duanzhou Road, the east side of the eight (large village) Workshop Patentee after: ZHAOQING BERYL ELECTRONIC TECHNOLOGY CO., LTD. Address before: 526020, Guangdong, Zhaoqing Duanzhou District, Duanzhou Road, the east side of the eight (large village) Workshop Patentee before: Zhaoqing Beryl Electronic Co., Ltd. |
|
| 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: 20111228 Termination date: 20200531 |