CN104465105A - Low-temperature-resistant aluminum electrolytic capacitor - Google Patents
Low-temperature-resistant aluminum electrolytic capacitor Download PDFInfo
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- CN104465105A CN104465105A CN201410668144.4A CN201410668144A CN104465105A CN 104465105 A CN104465105 A CN 104465105A CN 201410668144 A CN201410668144 A CN 201410668144A CN 104465105 A CN104465105 A CN 104465105A
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Abstract
The invention provides a low-temperature-resistant aluminum electrolytic capacitor. According to the technical scheme, the low-temperature-resistant aluminum electrolytic capacitor comprises an aluminum shell and a sealing rubber plug arranged on the aluminum shell, wherein primes are arranged in the aluminum shell and formed by winding anode foil, cathode foil and electrolytic paper, the electrolytic paper is connected with electronic-grade adhesive tape, the anode foil and the cathode foil are connected with a positive guide pin and a positive electrode pin respectively, and the electrolytic paper carries an electrolyte. The low-temperature-resistant aluminum electrolytic capacitor is characterized in that the anode foil is aluminum foil with the corrosion coefficient being smaller than 15 and the thickness ranging from 70 microns to 100 microns, the cathode foil is aluminum foil with the corrosion coefficient ranging from 500 to 600 and the thickness not larger than 50 microns, and the conductivity of the electrolyte is higher than 0.8 mS/cm at the temperature of -65 DEG C. The low-temperature-resistant aluminum electrolytic capacitor can be normally started to work at the temperature of -65 DEG C.
Description
Technical field
The present invention relates to a kind of preparation method of low temperature resistant aluminium electrolytic capacitor, belong to aluminium electrolytic capacitor technical field.
Background technology
Aluminium electrolytic capacitor is all in concern high temperature resistant, long-life all the time, and operating temperature range is generally more than-40 DEG C, and for the situation of ambient temperature lower than-40 DEG C of even-55 DEG C ~-65 DEG C of temperature, conventional alminium electrolytic condenser cannot normally work.
Summary of the invention
The object of this invention is to provide a kind of low temperature resistant, rate of finished products is high, stable performance, life-span are long aluminium electrolytic capacitor.
For realizing above object, technical scheme of the present invention is to provide a kind of low temperature resistant aluminium electrolytic capacitor, comprise aluminum hull and be located at the sealing plug on aluminum hull, sub-prime is provided with in aluminum hull, described sub-prime passes through cathode foil, anode foil and electrolytic paper winding are formed, electrolytic paper connects electron level adhesive tape, cathode foil and anode foil are connected positive guide pin and negative guide pin respectively, described electrolytic paper is with electrolyte, it is characterized in that, described cathode foil to be etch factor be less than 15 aluminium foil, thickness 70 ~ 100 μm, the aluminium foil of described anode foil to be etch factor be 500-600, thickness is no more than 50 μm, the conductivity of described electrolyte-65 DEG C time is more than 0.8mS/cm.
Preferably, described cathode foil and the purity of anode foil are more than 99.99%.
Preferably, the thickness of described electrolytic paper is 20 μm ~ 30 μm, and density is 0.28 ~ 0.35g/cm
3.
Preferably, the conductivity of described electrolyte-65 DEG C time is more than 1.0mS/cm, and pH value is 6.0 ~ 7.0.
Cathode foil etch factor of the present invention is low, electrolytic paper thickness is thin and density is little and electrolyte can keep good mobility and conductive capability at low temperatures, therefore guarantee that alminium electrolytic condenser can have sufficient static capacity, lower loss tangent and impedance etc. in-65 DEG C and following temperature environment, guarantee that alminium electrolytic condenser can normally work.
Compared with prior art, the invention has the beneficial effects as follows:
Low temperature resistant alminium electrolytic condenser involved in the present invention normally can start work-65 DEG C time, and cryogenic property is superior, and impedance is low, high frequency tolerant large ripple current, and existing equipment can be produced, and rate of finished products is guaranteed, the life-span is long.
Accompanying drawing explanation
Fig. 1 is aluminum electrolytic capacitor element winding schematic diagram;
Fig. 2 is aluminium electrolytic capacitor structural representation.
In figure, 1 is cathode foil, and 2 is anode foil, and 3 is electrolytic paper, and 4 is electron level adhesive tape, and 5 is negative guide pin, and 6 is positive guide pin, and 7 is the volume heart (rolling up the position that pin is put into during winding), and 8 is aluminum hull, and 9 is sub-prime, and 10 is sealing plug.
Embodiment
Below in conjunction with specific embodiment, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's instruction.
Embodiment 1
As shown in Figure 2, low temperature resistant aluminium electrolytic capacitor of the present invention, comprise aluminum hull 8 and be located at the sealing plug 10 on aluminum hull 8, sub-prime 9 is provided with in aluminum hull 8, as shown in Figure 1, described sub-prime 9 is by cathode foil 1, anode foil 2 and electrolytic paper 3 reel and are formed, electrolytic paper 3 connects electron level adhesive tape 4, cathode foil 1 and anode foil 2 are connected positive guide pin 6 and negative guide pin 5 respectively, described electrolytic paper 3 is with electrolyte, described cathode foil to be etch factor be 15 aluminium foil, its purity is 99.99%, thickness is 100 μm, described anode foil to be etch factor be 500 aluminium foil, purity is 99.99%, thickness is 50 μm, the thickness of described electrolytic paper is 25 μm, density is 0.30g/cm
3, described electrolyte ph is 6.5, and the conductivity-65 DEG C time is 1.0mS/cm.
During making, cathode foil 1, electrolytic paper 3, anode foil 2, electrolytic paper 3 are arranged in order from top to bottom, the tongue thorn riveting of positive guide pin 6 is located at above cathode foil 1, the tongue thorn riveting of negative guide pin 5 is located at above anode foil 2, and electrolytic paper 3 termination below anode foil 2 connects electron level adhesive tape 4, is wound into sub-prime 9, after impregnation electrolyte, load aluminum hull 8, assembling sealing plug 10 also completes sealing assembling, after sleeve pipe and the operation such as aging, become finished product.
Empirical tests, low temperature resistant alminium electrolytic condenser involved in the present invention normally can start work-65 DEG C time.Test at-65 DEG C of temperature, compared with under normal temperature, the capacity attenuation 8% ~ 12% of low temperature resistant aluminium electrolytic capacitor of the present invention, loss tangent rises 6 times ~ 8 times, and product impedance rises 25 times ~ 30 times.And the capacity attenuation of traditional aluminium electrolytic capacitor is 25% ~ 35%, loss tangent rises about 100 times, and impedance rises about 70 times.
Claims (4)
1. a low temperature resistant aluminium electrolytic capacitor, comprise aluminum hull (8) and be located at the sealing plug (10) on aluminum hull (8), sub-prime (9) is provided with in aluminum hull (8), described sub-prime (9) is by cathode foil (1), anode foil (2) and electrolytic paper (3) winding are formed, electrolytic paper (3) connects electron level adhesive tape (4), cathode foil (1) and anode foil (2) are connected positive guide pin (6) and negative guide pin (5) respectively, described electrolytic paper (3) is with electrolyte, it is characterized in that, described cathode foil to be etch factor be less than 15 aluminium foil, thickness 70 ~ 100 μm, the aluminium foil of described anode foil to be etch factor be 500-600, thickness is no more than 50 μm, the conductivity of described electrolyte-65 DEG C time is more than 0.8mS/cm.
2. aluminium electrolytic capacitor low temperature resistant as claimed in claim 1, is characterized in that, described cathode foil and the purity of anode foil are more than 99.99%.
3. aluminium electrolytic capacitor low temperature resistant as claimed in claim 1, is characterized in that, the thickness of described electrolytic paper is 20 μm ~ 30 μm, and density is 0.28 ~ 0.35g/cm
3.
4. aluminium electrolytic capacitor low temperature resistant as claimed in claim 1, is characterized in that, the conductivity of described electrolyte-65 DEG C time is more than 1.0mS/cm, and pH value is 6.0 ~ 7.0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410668144.4A CN104465105A (en) | 2014-11-20 | 2014-11-20 | Low-temperature-resistant aluminum electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410668144.4A CN104465105A (en) | 2014-11-20 | 2014-11-20 | Low-temperature-resistant aluminum electrolytic capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104465105A true CN104465105A (en) | 2015-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410668144.4A Pending CN104465105A (en) | 2014-11-20 | 2014-11-20 | Low-temperature-resistant aluminum electrolytic capacitor |
Country Status (1)
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| CN (1) | CN104465105A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107910183A (en) * | 2017-12-15 | 2018-04-13 | 肇庆绿宝石电子科技股份有限公司 | A kind of high-pressure aluminum electrolytic capacitor and its manufacture method of resistance to 40 DEG C of low temperature |
| CN112927941A (en) * | 2021-01-23 | 2021-06-08 | 深圳市凯特电子有限公司 | Small-size high-voltage electrolytic capacitor and processing technology thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101369490A (en) * | 2008-10-10 | 2009-02-18 | 上海永铭电子有限公司 | Preparation method for large ripple current-resistant aluminum electrolytic capacitor |
| CN202093988U (en) * | 2011-05-31 | 2011-12-28 | 肇庆绿宝石电子有限公司 | Aluminium electrolytic capacitor specifically used for ultralow temperature LED driving power supply |
| CN203871185U (en) * | 2014-05-06 | 2014-10-08 | 深圳市科维美电子有限公司 | Novel low-temperature-resistant aluminum electrolytic capacitor |
-
2014
- 2014-11-20 CN CN201410668144.4A patent/CN104465105A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101369490A (en) * | 2008-10-10 | 2009-02-18 | 上海永铭电子有限公司 | Preparation method for large ripple current-resistant aluminum electrolytic capacitor |
| CN202093988U (en) * | 2011-05-31 | 2011-12-28 | 肇庆绿宝石电子有限公司 | Aluminium electrolytic capacitor specifically used for ultralow temperature LED driving power supply |
| CN203871185U (en) * | 2014-05-06 | 2014-10-08 | 深圳市科维美电子有限公司 | Novel low-temperature-resistant aluminum electrolytic capacitor |
Non-Patent Citations (2)
| Title |
|---|
| 天津大学无线电材料与元件教研室: "《电容器》", 31 December 1981, 技术标准出版社 * |
| 崔志武等: "《铝电解电容器》", 31 December 1990, 学苑出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107910183A (en) * | 2017-12-15 | 2018-04-13 | 肇庆绿宝石电子科技股份有限公司 | A kind of high-pressure aluminum electrolytic capacitor and its manufacture method of resistance to 40 DEG C of low temperature |
| CN107910183B (en) * | 2017-12-15 | 2019-09-20 | 肇庆绿宝石电子科技股份有限公司 | A kind of high-pressure aluminum electrolytic capacitor and its manufacturing method of resistance to -40 DEG C of low temperature |
| CN112927941A (en) * | 2021-01-23 | 2021-06-08 | 深圳市凯特电子有限公司 | Small-size high-voltage electrolytic capacitor and processing technology thereof |
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Application publication date: 20150325 |