CN111584239A - Electrolyte of medium-voltage aluminum electrolytic capacitor - Google Patents
Electrolyte of medium-voltage aluminum electrolytic capacitor Download PDFInfo
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- CN111584239A CN111584239A CN202010515829.0A CN202010515829A CN111584239A CN 111584239 A CN111584239 A CN 111584239A CN 202010515829 A CN202010515829 A CN 202010515829A CN 111584239 A CN111584239 A CN 111584239A
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- parts
- ammonium
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- electrolyte
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- 239000003792 electrolyte Substances 0.000 title claims abstract description 29
- 239000003990 capacitor Substances 0.000 title claims abstract description 26
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 17
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 42
- 238000001816 cooling Methods 0.000 claims abstract description 27
- KWIPUXXIFQQMKN-UHFFFAOYSA-N 2-azaniumyl-3-(4-cyanophenyl)propanoate Chemical compound OC(=O)C(N)CC1=CC=C(C#N)C=C1 KWIPUXXIFQQMKN-UHFFFAOYSA-N 0.000 claims abstract description 15
- OTLNPYWUJOZPPA-UHFFFAOYSA-N 4-nitrobenzoic acid Chemical compound OC(=O)C1=CC=C([N+]([O-])=O)C=C1 OTLNPYWUJOZPPA-UHFFFAOYSA-N 0.000 claims abstract description 15
- TVXBFESIOXBWNM-UHFFFAOYSA-N Xylitol Natural products OCCC(O)C(O)C(O)CCO TVXBFESIOXBWNM-UHFFFAOYSA-N 0.000 claims abstract description 15
- GJYJYFHBOBUTBY-UHFFFAOYSA-N alpha-camphorene Chemical compound CC(C)=CCCC(=C)C1CCC(CCC=C(C)C)=CC1 GJYJYFHBOBUTBY-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229940090948 ammonium benzoate Drugs 0.000 claims abstract description 15
- NTBYNMBEYCCFPS-UHFFFAOYSA-N azane boric acid Chemical compound N.N.N.OB(O)O NTBYNMBEYCCFPS-UHFFFAOYSA-N 0.000 claims abstract description 15
- HEBKCHPVOIAQTA-UHFFFAOYSA-N meso ribitol Natural products OCC(O)C(O)C(O)CO HEBKCHPVOIAQTA-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000008213 purified water Substances 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- HEBKCHPVOIAQTA-SCDXWVJYSA-N xylitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)CO HEBKCHPVOIAQTA-SCDXWVJYSA-N 0.000 claims abstract description 15
- 229960002675 xylitol Drugs 0.000 claims abstract description 15
- 235000010447 xylitol Nutrition 0.000 claims abstract description 15
- 239000000811 xylitol Substances 0.000 claims abstract description 15
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 239000002904 solvent Substances 0.000 claims abstract description 9
- -1 carbon chain carboxylic acid Chemical class 0.000 claims abstract description 3
- 239000002994 raw material Substances 0.000 claims abstract description 3
- 238000004090 dissolution Methods 0.000 claims description 14
- SATJMZAWJRWBRX-UHFFFAOYSA-N azane;decanedioic acid Chemical compound [NH4+].[NH4+].[O-]C(=O)CCCCCCCCC([O-])=O SATJMZAWJRWBRX-UHFFFAOYSA-N 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 6
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims description 3
- IUZSEJJESGRFMH-UHFFFAOYSA-N azane;decanedioic acid Chemical compound N.OC(=O)CCCCCCCCC(O)=O IUZSEJJESGRFMH-UHFFFAOYSA-N 0.000 claims description 2
- 230000007547 defect Effects 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/022—Electrolytes; Absorbents
- H01G9/035—Liquid electrolytes, e.g. impregnating materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/145—Liquid electrolytic capacitors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses a medium-voltage aluminum electrolytic capacitor electrolyte, which is prepared from the following raw materials in parts by weight: 60-75 parts of ethylene glycol; 1-3 parts of ammonium borate salt; 10-15 parts of ammonium benzoate; 10-20 parts of organic long carbon chain carboxylic acid; 0.1-2 parts of ammonium hypophosphite; 0.1-1 part of p-nitrobenzoic acid; 1-5 parts of xylitol; 1-5 parts of purified water; heating the solvent to 140-145 ℃ according to the weight ratio, adding ammonium borate salt, preserving heat for 1 hour, cooling to 130 ℃, adding ammonium benzoate and organic long-carbon carboxylic acid, completely dissolving, preserving heat for 1 hour, cooling to 85-95 ℃, adding ammonium hypophosphite, p-nitrobenzoic acid, xylitol and purified water, completely dissolving, and cooling to obtain the electrolyte. The invention is suitable for the use of the aluminum electrolytic capacitor between 160-250V, and has the characteristics of low impedance, low electric leakage, ripple resistance, high temperature resistance and long service life.
Description
Technical Field
The invention relates to electrolyte for an electrolytic capacitor, in particular to electrolyte for a medium-voltage aluminum electrolytic capacitor.
Background
The capacitor is an electronic component which is used in a large amount and is not replaceable. The output of the aluminum electrolytic capacitor accounts for about 40 percent of the total amount of electronic components, and the output of the aluminum electrolytic capacitor accounts for about 36.8 percent of the output of the three types of capacitors.
At present, China has become a main production country of the global aluminum electrolytic capacitor. In 2004, the output of the Chinese aluminum electrolytic capacitor reaches 700 hundred million, which accounts for 40 percent of the like products in the world, and the sales of the aluminum electrolytic capacitor exceeds 100 hundred million yuan RMB. With the rapid development of PC products, audio-visual products such as televisions and DVDs, household appliances such as washing machines and energy saving lamps, transformers, automotive electronics, etc., the market demand of aluminum electrolytic capacitors will increase at a rate of not less than 5%. The influence of the electrolyte in the electrolytic capacitor on the performance of the capacitor is very important, and the electrolyte determines the working temperature characteristic, the voltage withstanding range and the ripple current resistance of the capacitor, and the service life of the capacitor.
At present, the capacitor products in China have the defects of low ripple current bearing capacity, quick change of loss factor capacity in use, short service life and the like, and are mainly influenced by electrolyte.
Disclosure of Invention
The invention aims to provide a medium-voltage aluminum electrolytic capacitor electrolyte which has wider applicable temperature condition, wider applicable voltage and stronger ripple resistance compared with the prior art.
The invention adopts the technical scheme that the electrolyte of the medium-voltage aluminum electrolytic capacitor is prepared from the following raw materials in parts by weight:
60-75 parts of ethylene glycol;
1-3 parts of ammonium borate salt;
10-15 parts of ammonium benzoate;
10-20 parts of organic long-carbon-chain carboxylic acid;
0.1-2 parts of ammonium hypophosphite;
0.1-1 part of p-nitrobenzoic acid;
1-5 parts of xylitol;
1-5 parts of purified water;
the preparation method comprises the following steps:
heating a solvent ethylene glycol to 140-145 ℃ according to a weight ratio, adding ammonium borate salt, preserving heat for 1 hour, cooling to 130 ℃, adding ammonium benzoate and organic long-carbon carboxylic acid, completely dissolving, preserving heat for 1 hour, cooling to 85-95 ℃, adding ammonium hypophosphite, p-nitrobenzoic acid, xylitol and purified water, completely dissolving, and cooling to obtain the electrolyte.
As an improvement thereof,
60-75 parts of ethylene glycol;
1-3 parts of ammonium borate salt;
10-15 parts of ammonium benzoate;
10-20 parts of organic long-carbon-chain carboxylic acid;
0.1-2 parts of ammonium hypophosphite;
0.1-1 part of p-nitrobenzoic acid;
1-5 parts of xylitol;
1-5 parts of purified water;
1050.2-0.6 parts of PVA.
Heating a solvent ethylene glycol to 140-145 ℃ according to a weight ratio, adding PVA105 for complete dissolution, adding ammonium borate salt, preserving heat for 1 hour, cooling to 130 ℃, adding ammonium benzoate, ammonium sebacic acid salt and organic long-carbon carboxylic acid, preserving heat for 1 hour after complete dissolution, cooling to 85-95 ℃, adding ammonium hypophosphite, p-nitrobenzoic acid, xylitol and purified water, completely dissolving, and cooling to obtain the electrolyte.
Further, in the present invention,
64.2 parts of ethylene glycol;
1050.5 parts of PVA;
2.5 parts of ammonium borate salt;
4 parts of ammonium sebacic acid;
10 parts of ammonium benzoate;
15 parts of organic long carbon chain carboxylic acid;
0.25 part of ammonium hypophosphite;
0.5 part of p-nitrobenzoic acid;
1 part of xylitol;
2 parts of purified water.
Heating a solvent ethylene glycol to 140-145 ℃ according to a weight ratio, adding PVA105 for complete dissolution, adding ammonium borate salt, preserving heat for 1 hour, cooling to 130 ℃, adding ammonium benzoate, ammonium sebacic acid salt and organic long-carbon carboxylic acid, preserving heat for 1 hour after complete dissolution, cooling to 85-95 ℃, adding ammonium hypophosphite, p-nitrobenzoic acid, xylitol and purified water, completely dissolving, and cooling to obtain the electrolyte.
1. The invention has the following characteristics:
(1) the conductivity is higher, wherein the conductivity of the electrolyte is more than 3.5x10-3 s/m;
(2) the high flashover voltage, the medium-voltage flashover is more than 300V;
(3) the oxidation rate is higher;
(4) the saturated vapor pressure is low, and the service life of the capacitor is prolonged;
(5) the oxidability is stable, and the service life of the working electrolyte must be ensured to be more than 10000h at 105 ℃ in a circuit;
(6) the electrolyte has low toxicity.
The electrolyte is suitable for the use of the aluminum electrolytic capacitor between 160V and 250V, and has the technical requirements of low impedance, low leakage, ripple resistance, high temperature resistance and long service life.
Detailed Description
Example 1
The preparation method of the electrolyte comprises the following steps: heating a solvent ethylene glycol to 140-145 ℃ according to the weight ratio of the formula 1, adding ammonium borate salt, preserving heat for 1 hour, cooling to 130 ℃, adding ammonium benzoate, ammonium sebacate and organic long-carbon carboxylic acid, preserving heat for 1 hour after complete dissolution, cooling to 85-95 ℃, adding ammonium hypophosphite, p-nitrobenzoic acid, xylitol and purified water, and obtaining the electrolyte after complete dissolution and cooling.
Example 2
The preparation method of the electrolyte comprises the following steps: heating a solvent ethylene glycol to 140-145 ℃ according to a weight ratio, adding ammonium borate salt, preserving heat for 1 hour, cooling to 130 ℃, adding ammonium benzoate, sebacic acid ammonium salt and organic long-carbon carboxylic acid, preserving heat for 1 hour after complete dissolution, cooling to 85-95 ℃, adding ammonium hypophosphite, p-nitrobenzoic acid, xylitol and purified water, and obtaining the electrolyte after cooling after complete dissolution.
Example 3
The preparation method of the electrolyte comprises the following steps: heating a solvent ethylene glycol to 140-145 ℃ according to a weight ratio, adding PVA105 for complete dissolution, adding ammonium borate salt, preserving heat for 1 hour, cooling to 130 ℃, adding ammonium benzoate, ammonium sebacic acid salt and organic long-carbon carboxylic acid, preserving heat for 1 hour after complete dissolution, cooling to 85-95 ℃, adding ammonium hypophosphite, p-nitrobenzoic acid, xylitol and purified water, completely dissolving, and cooling to obtain the electrolyte.
The formula parameters are as follows:
the high temperature load test results were as follows:
Claims (3)
1. the medium-voltage aluminum electrolytic capacitor electrolyte is characterized by comprising the following raw materials in parts by weight:
60-75 parts of ethylene glycol;
1-3 parts of ammonium borate salt;
10-15 parts of ammonium benzoate;
10-20 parts of organic long-carbon-chain carboxylic acid;
0.1-2 parts of ammonium hypophosphite;
0.1-1 part of p-nitrobenzoic acid;
1-5 parts of xylitol;
1-5 parts of purified water;
the preparation method comprises the following steps:
heating a solvent ethylene glycol to 140-145 ℃ according to a weight ratio, adding ammonium borate salt, preserving heat for 1 hour, cooling to 130 ℃, adding ammonium benzoate, sebacic acid ammonium salt and organic long-carbon carboxylic acid, preserving heat for 1 hour after complete dissolution, cooling to 85-95 ℃, adding ammonium hypophosphite, p-nitrobenzoic acid, xylitol and purified water, and obtaining the electrolyte after cooling after complete dissolution.
2. The electrolyte for medium-voltage aluminum electrolytic capacitors according to claim 1, further comprising 1050.2 to 0.6 parts by weight of PVA.
3. The medium voltage aluminum electrolytic capacitor electrolyte of claim 2, wherein:
64.2 parts of ethylene glycol;
1050.5 parts of PVA;
2.5 parts of ammonium borate salt;
4 parts of ammonium sebacic acid;
10 parts of ammonium benzoate;
15 parts of organic long carbon chain carboxylic acid;
0.25 part of ammonium hypophosphite;
0.5 part of p-nitrobenzoic acid;
1 part of xylitol;
2 parts of purified water;
the preparation method comprises the following steps:
heating a solvent ethylene glycol to 140-145 ℃ according to a weight ratio, adding PVA105 for complete dissolution, adding ammonium borate salt, preserving heat for 1 hour, cooling to 130 ℃, adding ammonium benzoate, ammonium sebacic acid salt and organic long-carbon carboxylic acid, preserving heat for 1 hour after complete dissolution, cooling to 85-95 ℃, adding ammonium hypophosphite, p-nitrobenzoic acid, xylitol and purified water, completely dissolving, and cooling to obtain the electrolyte.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010515829.0A CN111584239A (en) | 2020-06-09 | 2020-06-09 | Electrolyte of medium-voltage aluminum electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010515829.0A CN111584239A (en) | 2020-06-09 | 2020-06-09 | Electrolyte of medium-voltage aluminum electrolytic capacitor |
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| Publication Number | Publication Date |
|---|---|
| CN111584239A true CN111584239A (en) | 2020-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010515829.0A Pending CN111584239A (en) | 2020-06-09 | 2020-06-09 | Electrolyte of medium-voltage aluminum electrolytic capacitor |
Country Status (1)
| Country | Link |
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| CN (1) | CN111584239A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114496572A (en) * | 2022-01-14 | 2022-05-13 | 贵州云睿电子科技有限公司 | Medium-voltage patch aluminum electrolytic capacitor electrolyte and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101572187A (en) * | 2008-04-30 | 2009-11-04 | 深圳新宙邦科技股份有限公司 | Electrolyte of medium-high voltage aluminum electrolytic capacitor and preparation method of solute thereof |
| CN103839682A (en) * | 2012-11-21 | 2014-06-04 | 东莞市东阳光电容器有限公司 | Working electrolyte of 600-V aluminum electrolytic capacitor and application thereof |
| CN105244166A (en) * | 2015-09-08 | 2016-01-13 | 南通三鑫电子科技股份有限公司 | 650V ultrahigh voltage aluminum electrolytic capacitor working electrolyte, and preparation method and applications thereof |
| CN107863252A (en) * | 2017-11-06 | 2018-03-30 | 南通新三能电子有限公司 | Middle jewelling working electrolyte of electrolytic capacitor and preparation method thereof |
| CN109448996A (en) * | 2018-12-29 | 2019-03-08 | 广州鸿葳科技股份有限公司 | A kind of high conductance electrolyte of high pressure and the preparation method and application thereof |
-
2020
- 2020-06-09 CN CN202010515829.0A patent/CN111584239A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101572187A (en) * | 2008-04-30 | 2009-11-04 | 深圳新宙邦科技股份有限公司 | Electrolyte of medium-high voltage aluminum electrolytic capacitor and preparation method of solute thereof |
| CN103839682A (en) * | 2012-11-21 | 2014-06-04 | 东莞市东阳光电容器有限公司 | Working electrolyte of 600-V aluminum electrolytic capacitor and application thereof |
| CN105244166A (en) * | 2015-09-08 | 2016-01-13 | 南通三鑫电子科技股份有限公司 | 650V ultrahigh voltage aluminum electrolytic capacitor working electrolyte, and preparation method and applications thereof |
| CN107863252A (en) * | 2017-11-06 | 2018-03-30 | 南通新三能电子有限公司 | Middle jewelling working electrolyte of electrolytic capacitor and preparation method thereof |
| CN109448996A (en) * | 2018-12-29 | 2019-03-08 | 广州鸿葳科技股份有限公司 | A kind of high conductance electrolyte of high pressure and the preparation method and application thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114496572A (en) * | 2022-01-14 | 2022-05-13 | 贵州云睿电子科技有限公司 | Medium-voltage patch aluminum electrolytic capacitor electrolyte and preparation method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20200825 |