CN202758754U - Boron-free high pressure aluminum electrolytic capacitor - Google Patents
Boron-free high pressure aluminum electrolytic capacitor Download PDFInfo
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- CN202758754U CN202758754U CN 201220426589 CN201220426589U CN202758754U CN 202758754 U CN202758754 U CN 202758754U CN 201220426589 CN201220426589 CN 201220426589 CN 201220426589 U CN201220426589 U CN 201220426589U CN 202758754 U CN202758754 U CN 202758754U
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Abstract
The utility model discloses a boron-free high pressure aluminum electrolytic capacitor, which comprises a housing (1), a core (2) arranged in the housing (2) and a work electrolyte (3) arranged in the core (2), the core (2) comprises a positive and negative electrode foil (21), a positive and negative leading-out wire (22) and an insulation interlayer (23), the insulation interlayer (23) absorbs a work electrolyte (3), the positive and negative leading-out wire (22) is electrically connected to the corresponding positive and negative electrode foil (21), the positive and negative electrode foil (21) comprises an electrode extendible sheet (212) used for enlarging the contact area of the electrode foil (21) and the work electrolyte (3); wherein the pH value of the work electrolyte (3) is 6.0-7.0 at 30 DE G C. The boron-free high pressure aluminum electrolytic capacitor has the beneficial effect that no boric acid or borate is generated in the electrolyte, the service life is long, the electrode extendible sheet can increase the contact area of the electrode foil and the electrolyte, and the conductivity performance of the electrolyte with high conductivity can be embodied.
Description
Technical field
The utility model relates to capacitor, more particularly, relates to a kind of without the boron high-pressure aluminum electrolytic capacitor.
Background technology
In the general electronic circuit of medium-high voltage aluminum electrolytic capacitor extensive use, its main application is energy storage, filtering, coupling, vibration, phase shift, step-down, integration, memory etc.The mesohigh working electrolyte of electrolytic capacitor is as the actual negative pole of electrolytic capacitor, and in occupation of extremely important status, can it affect product and work for a long time in the electrolytic capacitor product, and has the effect of optimizing the electric performance of capacitor.
Traditional medium-high voltage aluminum electrolytic capacitor Working electrolyte is that boric acid or borate add glycol system, and wherein, boric acid or borate often play vital effect in medium-high voltage aluminum electrolytic capacitor in Working electrolyte.Because esterification can occur for boric acid or borate and ethylene glycol, can produce a small amount of water after the reaction.Water is present in the reparation that helps the electrode for capacitors foil oxide film in the electrolyte on a small quantity, and the existence of a small amount of water also is conducive to the dissolving of solute in the Working electrolyte, is conducive to the raising of Working electrolyte conductivity; Simultaneously boric acid or borate also can with diethylene glycol (DEG) or polyethylene glycol or polyvinyl alcohol generation esterification, the flash over voltage of Working electrolyte is significantly improved, and the Working electrolyte of high flash over voltage is conducive to the safety and stability of medium-high voltage aluminum electrolytic capacitor product.
Consider the fail safe of Environmental Factors and electronic circuit, some countries forbid using boron and salts substances thereof gradually in medium-high voltage aluminum electrolytic capacitor, for example boron and salts substances thereof all are put in the banned substance in height concern material (SVHC) tabulation of EU chemicals management board announcement.
Because boric acid or borate often play vital effect in medium-high voltage aluminum electrolytic capacitor in Working electrolyte, and forbidding boric acid or borate, can reduce the performance that medium-high voltage aluminum electrolytic capacitor is used Working electrolyte, therefore need to be a kind of both without boric acid or borate, can not reduce again the novel electrolyte that medium-high voltage aluminum electrolytic capacitor is used the work electrolyte property.Simultaneously, also there is electrode foil in the aluminium electrolytic capacitor of prior art and the electrolyte contact area is less, cause thus the lower shortcoming of conductivity.
The utility model content
The technical problems to be solved in the utility model is, defects for prior art: forbidding boric acid or borate can reduce that also there is electrode foil in medium-high voltage aluminum electrolytic capacitor with the aluminium electrolytic capacitor of the performance of Working electrolyte, prior art and the electrolyte contact area is less, cause conductivity lower thus, and a kind of high conductivity aluminium electrolytic capacitor is provided.High conductivity aluminium electrolytic capacitor of the present utility model is applicable to medium-high voltage aluminum electrolytic capacitor, and without boric acid or borate, long service life, its performance meet or exceed boronic acid containing or boratory electrolyte in the prior art in this electrolyte; The electrode Extendible flake has increased the contact area of electrode foil and electrolyte, is embodied so that have the conductivity performance of the electrolyte of high conductance.
The technical scheme that its technical problem that solves the utility model adopts is: construct a kind of without the boron high-pressure aluminum electrolytic capacitor, comprise shell, be arranged on the fuse in the described shell and place the interior Working electrolyte of described fuse, described fuse comprises positive and negative electrode paper tinsel, both positive and negative polarity lead-out wire and insulation interlayer, described insulation interlayer adsorbs described Working electrolyte, described both positive and negative polarity lead-out wire is electrically connected with corresponding described positive and negative electrode paper tinsel, and described electrode foil comprises the electrode Extendible flake that increases described electrode foil and described Working electrolyte contact area;
The pH value of described Working electrolyte in the time of 30 ℃ is 6.0-7.0, and described Working electrolyte is by comprising by weight percentage: 50～80% ethylene glycol; 2～20% healant, described healant are adipic acid, suberic acid, azelaic acid hydrogen, decanedioic acid, dodecandioic acid, 1,7-decanedioic acid, 1,6-dodecandioic acid, 1,10-tetradecane dicarboxylic acid, 1, at least a in the 12-octadecane diacid; 2～20% conductivity adjustment agent, described conductivity adjustment agent are at least a in ethylenediamine, triethylamine, butanediamine, pentanediamine, hexamethylene diamine, octamethylenediamine, the nonamethylene diamine; 0.1～1% passivator, described passivator are at least a in phosphoric acid, phosphorous acid, ammonium hydrogen phosphate, the ammonium hypophosphite; 1～10% flash over voltage elevator, described flash over voltage elevator are at least a in diethylene glycol ethers, polyglycol ether, polyglyceryl ether, poly-sweet dew alcohol ether, the poly-sorbose alcohol ether; 0.2～2% the hydrogen agent that disappears, the described hydrogen agent that disappears are at least a of paranitrobenzoic acid, 3-nitroacetophenone, p-nitrophenyl methyl alcohol;
Described electrode foil top is formed with aluminium dielectric oxide film and phosphating coat successively, and described healant and passivator are used for repairing described aluminium dielectric oxide film and described phosphating coat.
Implement of the present utility modelly without the boron high-pressure aluminum electrolytic capacitor, have following beneficial effect: without boric acid or borate, long service life, its performance meet or exceed boronic acid containing or boratory electrolyte in the prior art in the electrolyte of the present utility model; The electrode Extendible flake has increased the contact area of electrode foil and electrolyte, is embodied so that have the conductivity performance of the electrolyte of high conductance.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is that the utility model is without the structural representation of boron high-pressure aluminum electrolytic capacitor embodiment.
Embodiment
Understand for technical characterictic of the present utility model, purpose and effect being had more clearly, now contrast accompanying drawing and describe embodiment of the present utility model in detail.
As shown in Figure 1, of the present utility model without boron high-pressure aluminum electrolytic capacitor the first embodiment in, comprise shell 1, be arranged on the fuse 2 in the shell 1 and place Working electrolyte 3 in the fuse 2, fuse 2 comprises positive and negative electrode paper tinsel 21, both positive and negative polarity lead-out wire 22 and insulation interlayer 23, insulation interlayer 23 absorption Working electrolytes 3, both positive and negative polarity lead-out wire 22 is electrically connected with corresponding positive and negative electrode paper tinsel 21, and electrode foil 21 comprises the electrode Extendible flake 212 that increases electrode foil 21 and Working electrolyte 3 contacts area.Comprise 6 electrode Extendible flakes 212 in the present embodiment, certainly, it is 6 that the quantity of electrode Extendible flake 212 is not limited to, and also can be 2 other quantity such as grade.
The pH value of Working electrolyte 3 in the time of 30 ℃ is 6.0-7.0.The pH value of Working electrolyte 3 in the time of 30 ℃ is preferably 6.5 in the present embodiment.In other embodiments, the pH value of Working electrolyte 3 in the time of 30 ℃ also can be 6.0,7.0 or other numerical value between 6.0 to 7.0.
Of the present utility model without the boron high-pressure aluminum electrolytic capacitor, by weight percentage, comprise following component:
Further incite somebody to action, ethylene glycol is the base solvent of Working electrolyte.
Healant is organic carboxyl acid.Organic carboxyl acid is adipic acid, suberic acid, azelaic acid hydrogen, decanedioic acid, dodecandioic acid, 1,7-decanedioic acid, 1,6-dodecandioic acid, 1,10-tetradecane dicarboxylic acid, 1, at least a in the 12-octadecane diacid.
The conductivity adjustment agent is organic amine.Organic amine is at least a in ethylenediamine, triethylamine, butanediamine, pentanediamine, hexamethylene diamine, octamethylenediamine, the nonamethylene diamine.
Passivator is a kind of in phosphoric acid, phosphorous acid, ammonium hydrogen phosphate, the ammonium hypophosphite.Passivator is mainly repaired the outer field phosphating coat of oxide-film on the electrode foil, and reaches the effect that suppresses hydration, and the complete existence of phosphating coat is so that alumite is insensitive to hydration reaction, thus protection aluminium dielectric oxide film.Healant and passivator have following effect: mainly repair the oxide-film on the electrode foil when medium-high voltage aluminum electrolytic capacitor wears out and work, the complete existence of oxide-film has improved the electrical characteristic of medium-high voltage aluminum electrolytic capacitor and the life characteristic of product.
The flash over voltage elevator is at least a in diethylene glycol ethers, polyglycol ether, polyglyceryl ether, poly-sweet dew alcohol ether, the poly-sorbose alcohol ether.The flash over voltage elevator can Effective Raise be the flash over voltage of Working electrolyte without boron, makes electrolyte of the present utility model become a kind of safe, stable, long-life medium-high voltage aluminum electrolytic capacitor Working electrolyte.
The hydrogen agent that disappears is at least a in paranitrobenzoic acid, 3-nitroacetophenone, the p-nitrophenyl methyl alcohol.Need constantly to repair the oxide-film defective on the electrode foil in the aging and course of work in medium-high voltage aluminum electrolytic capacitor, repair the oxide-film defective and will produce hydrogen, the generation of hydrogen can make the interior voltage rise of electrolytic capacitor high, electrolytic capacitor can explode when serious, and the hydrogen agent that disappears is exactly to play in this course the effect that absorbs hydrogen.
Traditional medium-high voltage aluminum electrolytic capacitor Working electrolyte is to lean on boric acid or borate and ethylene glycol that esterification can occur, can produce a small amount of water after the reaction, water is present in the reparation that helps the electrode for capacitors foil oxide film in the electrolyte on a small quantity, a small amount of water have a dissolving that is beneficial to solute in the Working electrolyte, be conducive to the raising of Working electrolyte conductivity.Electrolyte of the present utility model does not use boric acid or borate, but uses organic carboxyl acid, but does not use boric acid or the borate will be so that the solubility of organic carboxyl acid is very limited, and the conductivity of Working electrolyte improves very difficult.The utility model is to add organic amine in ethylene glycol+organic carboxyl acid+organic ether system by a kind of new method, the interpolation of organic amine can Effective Raise be the conductivity of Working electrolyte without boron so that of the present utility model be the medium-high voltage aluminum electrolytic capacitor Working electrolyte that Working electrolyte becomes a kind of safe, stable, high frequency low-resistance, long-life, large ripple current-resistant without boron.The electrolyte that the utility model makes improves at least 30% than the conductivity of the electrolyte of prior art.
In the present embodiment, electrolyte 3 comprises by weight: 50 parts of ethylene glycol, 20 parts of adipic acids, 20 parts of ethylenediamines, 0.6 part of ammonium hypophosphite, 7.4 parts of diethylene glycol ethers, 2 parts of p-nitrophenyl methyl alcohol.Certainly, the component of electrolyte 3 is not limited to this, for example, also can be 68 parts of ethylene glycol, (1,6-dodecandioic acid, 1, each 3 parts of 10-tetradecane dicarboxylic acid and 1,12-octadecane diacids), 12 parts of nonamethylene diamines, 1.5 parts of 0.5 part of ammonium hypophosphites, (each 3 parts of polyglyceryl ether, poly-sweet dew alcohol ether and poly-sorbose alcohol ethers), p-nitrophenyl methyl alcohol.
Without boric acid or borate, long service life, its performance meet or exceed boronic acid containing or boratory electrolyte in the prior art in the electrolyte of the present utility model; The electrode Extendible flake has increased the contact area of electrode foil and electrolyte, is embodied so that have the conductivity performance of the electrolyte of high conductance.
The characteristic of the utility model electrolyte:
1, the conductivity of 30 degrees centigrade of test job electrolyte is 1.6 ± 0.1ms/cm;
2, the acid-base value of 30 degrees centigrade of test job electrolyte is 6.5 ± 0.5;
3, the flash over voltage minimum of 80 degrees centigrade of test job electrolyte is not less than 500V;
4, the viscosity of 80 degrees centigrade of test job electrolyte is 20 ± 2mPS1.s.
The above is described embodiment of the present utility model by reference to the accompanying drawings; but the utility model is not limited to above-mentioned embodiment; above-mentioned embodiment only is schematic; rather than restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; not breaking away from the scope situation that the utility model aim and claim protect, also can make a lot of forms, these all belong within the protection of the present utility model.
Claims (1)
1. one kind without the boron high-pressure aluminum electrolytic capacitor, it is characterized in that, comprise shell (1), be arranged on the fuse (2) in the described shell (1) and place the interior Working electrolyte (3) of described fuse (2), described fuse (2) comprises positive and negative electrode paper tinsel (21), both positive and negative polarity lead-out wire (22) and insulation interlayer (23), described insulation interlayer (23) adsorbs described Working electrolyte (3), described both positive and negative polarity lead-out wire (22) is electrically connected with corresponding described positive and negative electrode paper tinsel (21), and described electrode foil (21) comprises that Working electrolyte increases the electrode Extendible flake (212) of described electrode foil (21) and described Working electrolyte (3) contact area;
The pH value of described Working electrolyte (3) in the time of 30 ℃ is 6.0-7.0, and described Working electrolyte (3) is by comprising by weight percentage: 50～80% ethylene glycol; 2～20% healant, described healant are adipic acid, suberic acid, azelaic acid hydrogen, decanedioic acid, dodecandioic acid, 1,7-decanedioic acid, 1,6-dodecandioic acid, 1,10-tetradecane dicarboxylic acid, 1, at least a in the 12-octadecane diacid; 2～20% conductivity adjustment agent, described conductivity adjustment agent are at least a in ethylenediamine, triethylamine, butanediamine, pentanediamine, hexamethylene diamine, octamethylenediamine, the nonamethylene diamine; 0.1～1% passivator, described passivator are at least a in phosphoric acid, phosphorous acid, ammonium hydrogen phosphate, the ammonium hypophosphite; 1～10% flash over voltage elevator, described flash over voltage elevator are at least a in diethylene glycol ethers, polyglycol ether, polyglyceryl ether, poly-sweet dew alcohol ether, the poly-sorbose alcohol ether; 0.2～2% the hydrogen agent that disappears, the described hydrogen agent that disappears are at least a in paranitrobenzoic acid, 3-nitroacetophenone, the p-nitrophenyl methyl alcohol;
Described electrode foil (21) top is formed with aluminium dielectric oxide film and phosphating coat successively, and described healant and passivator are used for repairing described aluminium dielectric oxide film and described phosphating coat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220426589 CN202758754U (en) | 2012-08-27 | 2012-08-27 | Boron-free high pressure aluminum electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220426589 CN202758754U (en) | 2012-08-27 | 2012-08-27 | Boron-free high pressure aluminum electrolytic capacitor |
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| CN202758754U true CN202758754U (en) | 2013-02-27 |
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| CN 201220426589 Expired - Fee Related CN202758754U (en) | 2012-08-27 | 2012-08-27 | Boron-free high pressure aluminum electrolytic capacitor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103337366A (en) * | 2013-06-06 | 2013-10-02 | 上海洪微电子科技有限公司 | Flash voltage boosting agent used for capacitor working electrolyte and preparation method of flash voltage boosting agent |
| CN110692115A (en) * | 2018-10-09 | 2020-01-14 | 丰宾电子（深圳）有限公司 | Hybrid aluminum electrolytic capacitor and manufacturing method thereof |
| CN110730994A (en) * | 2018-10-09 | 2020-01-24 | 丰宾电子（深圳）有限公司 | Hybrid aluminum electrolytic capacitor and manufacturing method thereof |
| CN115083785A (en) * | 2022-07-21 | 2022-09-20 | 江苏绿能家电科技有限公司 | Leakage-proof device for working electrolyte of electrolytic capacitor |
-
2012
- 2012-08-27 CN CN 201220426589 patent/CN202758754U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103337366A (en) * | 2013-06-06 | 2013-10-02 | 上海洪微电子科技有限公司 | Flash voltage boosting agent used for capacitor working electrolyte and preparation method of flash voltage boosting agent |
| CN110692115A (en) * | 2018-10-09 | 2020-01-14 | 丰宾电子（深圳）有限公司 | Hybrid aluminum electrolytic capacitor and manufacturing method thereof |
| CN110730994A (en) * | 2018-10-09 | 2020-01-24 | 丰宾电子（深圳）有限公司 | Hybrid aluminum electrolytic capacitor and manufacturing method thereof |
| WO2020073190A1 (en) * | 2018-10-09 | 2020-04-16 | 丰宾电子（深圳）有限公司 | Hybrid aluminum electrolytic capacitor and fabrication method therefor |
| CN110692115B (en) * | 2018-10-09 | 2021-08-06 | 丰宾电子（深圳）有限公司 | Hybrid aluminum electrolytic capacitor and manufacturing method thereof |
| CN115083785A (en) * | 2022-07-21 | 2022-09-20 | 江苏绿能家电科技有限公司 | Leakage-proof device for working electrolyte of electrolytic capacitor |
| CN115083785B (en) * | 2022-07-21 | 2022-11-15 | 江苏绿能家电科技有限公司 | Leakage-proof device for working electrolyte of electrolytic capacitor |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160815 Address after: 333000, No. 39, Indus Avenue, hi tech Industrial Development Zone, Jiangxi, Jingdezhen Patentee after: Jiangxi Liansheng Electronics Co.,Ltd. Address before: 518105 Xiangshan Avenue in Guangdong city of Shenzhen province Baoan District Songgang street Luotian Third Industrial Zone No. 462 Pu Beijing Huamao Industrial Park Patentee before: U-CON CAPACITORS TECHNOLOGIES CO., LTD. |
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| 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: 20130227 Termination date: 20180827 |