CN102074380B - Electrolytic capacitor with long service life - Google Patents
Electrolytic capacitor with long service life Download PDFInfo
- Publication number
- CN102074380B CN102074380B CN2011100210951A CN201110021095A CN102074380B CN 102074380 B CN102074380 B CN 102074380B CN 2011100210951 A CN2011100210951 A CN 2011100210951A CN 201110021095 A CN201110021095 A CN 201110021095A CN 102074380 B CN102074380 B CN 102074380B
- Authority
- CN
- China
- Prior art keywords
- shell
- electrochemical capacitor
- aluminum foil
- diaphragm seal
- electrolytic capacitor
- 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.)
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- 239000003990 capacitor Substances 0.000 title claims abstract description 38
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 24
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000011888 foil Substances 0.000 claims abstract description 18
- 239000003792 electrolyte Substances 0.000 claims abstract description 16
- 238000012856 packing Methods 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 7
- 239000004411 aluminium Substances 0.000 claims description 6
- 239000004816 latex Substances 0.000 claims description 4
- 229920000126 latex Polymers 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 11
- 238000007789 sealing Methods 0.000 description 4
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
Images
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
- H01G9/08—Housing; Encapsulation
- H01G9/10—Sealing, e.g. of lead-in wires
-
- 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
- H01G9/08—Housing; Encapsulation
- H01G9/12—Vents or other means allowing expansion
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The invention discloses an electrolytic capacitor with a long service life, belonging to the field of electronic devices. The electrolytic capacitor comprises an internally hollow housing, wherein one end of the housing is connected with a closed cover, the other end of the housing is connected with an open cover, and positive and negative electrode pins are arranged on the closed cover; and an aluminum foil roll core is arranged in the housing, an electrolyte is arranged in the aluminum foil roll core, and the aluminum foil roll core is connected with the positive and negative electrode pins respectively through connecting lines. The electrolytic capacitor is characterized in that a flexible seal gasket is arranged between the open cover and the housing; and a flexible seal gasket is arranged between the closed cover and the housing. In the electrolytic capacitor provided by the invention, a highly sealed structure is formed from the electrolytic capacitor, so that the electrolytic capacitor has the advantages of prolonged service life and stable capacitance.
Description
Technical field
The present invention relates to a kind of electrochemical capacitor, particularly a kind of high life electrochemical capacitor.
Background technology
Electrochemical capacitor be a lot of electric equipment productss must use element.Because with electrolytic process, so capacitance is big than the capacitance of the electric capacity of other type, so electrochemical capacitor is to be difficult to alternative element to electrochemical capacitor in charging and discharge process.
Because electrochemical capacitor is in the course of the work with electrolytic process, then have minimum gas and overflow, and electrochemical capacitor is in the course of the work, can produce heat, cause temperature to raise, produce certain steam, therefore existing electrochemical capacitor is impossible sealing.
Receive existing electrochemical capacitor structural limitations, owing to structure can't seal, along with the increase of service time; Electrolyte is in continuous minimizing; Simultaneously electrolytic process also progressively weakens, and capacitance also progressively reduces thereupon, when electrolyte dry in; Electric capacity complete failure then, thus cause entire circuit not move.Therefore, there is short and capacitance problem of unstable of life-span in existing electrochemical capacitor.
Summary of the invention
In order to solve short and capacitance problem of unstable of electrochemical capacitor of the prior art life-span, the embodiment of the invention provides a kind of high life electrochemical capacitor.Said technical scheme is following:
A kind of high life electrochemical capacitor; The shell that comprises inner hollow, an end of said shell is connecting closure, and the other end is connecting the opening capping; Said closure is provided with the positive and negative electrode pin; The inside of said shell is provided with the aluminum foil coil core, and the inside of said aluminum foil coil core is provided with electrolyte, and said aluminum foil coil core is connected with said positive and negative electrode pin respectively through connecting line; Be provided with flexible diaphragm seal between said opening capping and the said shell, be provided with flexible diaphragm seal between said closure and the said shell.
Further, in order to increase the loading of electrolyte, be provided with cavity between said aluminum foil coil core and the said shell, said cavity is used to fill said electrolyte.
Further, in order to compress said diaphragm seal, between said diaphragm seal and the said shell and between said closure and the said shell, be respectively equipped with packing ring, the hardness of said packing ring is less than the hardness of said shell.
Particularly, in order to guarantee the resistance to pressure of shell, said shell is a stainless steel casing.
Particularly, as preferably, said packing ring is the aluminium packing ring.
Particularly, as preferably, said diaphragm seal is the latex diaphragm seal.
Particularly, as preferably, the middle part of said opening capping is provided with opening, and said opening capping adopts plastic cement to process.
Particularly, as preferably, the opening diameter of said opening capping equates with the diameter of bore of said packing ring.
The beneficial effect that the technical scheme that the embodiment of the invention provides is brought is: compare prior art; The embodiment of the invention is through being provided with flexible diaphragm seal between said opening capping and said shell; Between said closure and said shell, be provided with flexible diaphragm seal; Make said electric capacity form the structure of a high-seal; Owing to be provided with flexible diaphragm seal between the opening part of opening capping and the said shell, when electric capacity inside produced steam and produces electrolysis gas, diaphragm seal can enlarge volume; When pressure reaches certain value; Because gas that steam that the temperature rising is produced and charge and discharge are emitted and the gas of Hui Rong can reach balance; Can reach steady-working state (penetrating power of denier indissoluble gases is extremely strong, can overflow through the tectonic gap of flexible sealing fin); When electric capacity quit work or lowers the temperature, gas can return and be dissolved in the electrolyte, so the embodiment of the invention can effectively increase the life-span of said electrochemical capacitor, and kept the stable of capacitance.
Description of drawings
Fig. 1 is the main cutaway view of the said high life electrochemical capacitor of the embodiment of the invention.
Among the figure: 1 shell, 2 electrolyte, 3 connecting lines, 4 first packing rings, 5 first diaphragm seals, 6 closure, 6.1 positive electrode pins, 6.2 negative electrode pins, 7 aluminum foil coil cores, 8 cavitys, 9 opening cappings, 9.1 openings, 10 second diaphragm seals, 11 second packing rings.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, will combine accompanying drawing that embodiment of the present invention is done to describe in detail further below.
A kind of high life electrochemical capacitor as shown in Figure 1, that the embodiment of the invention provides comprises the shell 1 of inner hollow; One end of said shell 1 is connecting closure 6; The other end is connecting opening capping 9, is provided with the second flexible diaphragm seal 10 between said opening capping 9 and the said shell 1, is provided with the first flexible diaphragm seal 5 between said closure 6 and the said shell 1; Said closure 6 is provided with positive electrode pin 6.1 and negative electrode pin 6.2; The inside of said shell 1 is provided with aluminum foil coil core 7, and the inside of said aluminum foil coil core 7 is provided with electrolyte 2, and said aluminum foil coil core 7 is connected with negative electrode pin 6.2 with said positive electrode pin 6.1 respectively through connecting line 3.
The embodiment of the invention is passed through said structure; Make said electrochemical capacitor form the structure of a high-seal; Owing to be provided with the second flexible diaphragm seal 10 between the opening part of opening capping 9 and the said shell 1; When electric capacity inside produced steam and produces electrolysis gas, second diaphragm seal 10 can enlarge volume; When pressure reaches certain value; Because gas that steam that the temperature rising is produced and charge and discharge are emitted and the gas of Hui Rong can reach balance; Can reach steady-working state (penetrating power of denier indissoluble gases is extremely strong, can overflow through the tectonic gap of flexible sealing fin); When electric capacity quit work or lowers the temperature, gas can return and be dissolved in the electrolyte 2, so the embodiment of the invention can effectively increase the life-span of said electrochemical capacitor, and kept the stable of capacitance.
Further, in order to increase the loading of electrolyte 2, be provided with cavity 8 between said aluminum foil coil core 7 and the said shell 1; Said cavity 8 is used to fill said electrolyte 2, makes the outside of aluminum foil coil core 7 also be full of electrolyte 2, therefore; The electrochemical capacitor of the inner electrolyte 2 that adds of electrochemical capacitor according to the invention in compared to prior art is many, makes electrochemical capacitor 8-10 according to the invention withered, therefore; Can prolong the life-span of electrochemical capacitor effectively; Especially for the more abominable electronic device of operational environment, the power supply of high-power LED street lamp for example, its effect is especially remarkable.
Further; In order to compress said first diaphragm seal 5 and second diaphragm seal 10; Be provided with second packing ring 11 between said second diaphragm seal 10 and the said shell 1; Be provided with first packing ring 4 between said closure 6 and the said shell 1, the hardness of said first packing ring 4 and second packing ring 11 is all less than the hardness of said shell 1.
Particularly, in order to guarantee the resistance to pressure of shell 1, said shell 1 preferred stainless steel casing.Certainly, those skilled in the art can know that said shell 1 is not limited to stainless steel casing, all can as long as can satisfy any material of withstand voltage function.
Particularly, said packing ring is preferably the aluminium packing ring, guaranteeing the compressible while of packing ring, also can consume a part of aluminium, the consumption of aluminium in the aluminum foil coil core 7 in the compensation electrolytic process.Certainly, those skilled in the art can know that said packing ring is not limited to not aluminium, all can as long as can satisfy any metal washer of compression function.
Particularly, said diaphragm seal is preferably the latex diaphragm seal.Certainly, those skilled in the art can know that said diaphragm seal is not limited to the latex diaphragm seal, can be the diaphragm seals of any flexibility, like the silica gel sealing sheet.
Particularly, as preferably, the middle part of said opening capping 9 is provided with opening 9.1, and opening 9.1 diameters of said opening capping 9 equate that with the diameter of bore of said second packing ring 11 the said opening capping 9 preferred plastic cement that adopt are processed.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. high life electrochemical capacitor comprises the shell of inner hollow, and an end of said shell is connecting closure; The other end is connecting the opening capping; Said closure is provided with the positive and negative electrode pin, and the inside of said shell is provided with the aluminum foil coil core, and the inside of said aluminum foil coil core is provided with electrolyte; Said aluminum foil coil core is connected with said positive and negative electrode pin respectively through connecting line; It is characterized in that, be provided with flexible diaphragm seal between said opening capping and the said shell, be provided with flexible diaphragm seal between said closure and the said shell.
2. high life electrochemical capacitor as claimed in claim 1 is characterized in that, is provided with cavity between said aluminum foil coil core and the said shell, and said cavity is used to fill said electrolyte.
3. according to claim 1 or claim 2 high life electrochemical capacitor is characterized in that be respectively equipped with packing ring between said diaphragm seal and the said shell and between said closure and the said shell, the hardness of said packing ring is less than the hardness of said shell.
4. high life electrochemical capacitor as claimed in claim 3 is characterized in that, said shell is a stainless steel casing.
5. high life electrochemical capacitor as claimed in claim 4 is characterized in that, said packing ring is the aluminium packing ring.
6. high life electrochemical capacitor as claimed in claim 5 is characterized in that, said diaphragm seal is the latex diaphragm seal.
7. high life electrochemical capacitor as claimed in claim 6 is characterized in that the middle part of said opening capping is provided with opening, and said opening capping adopts plastic cement to process.
8. high life electrochemical capacitor as claimed in claim 7 is characterized in that, the opening diameter of said opening capping equates with the diameter of bore of said packing ring.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100210951A CN102074380B (en) | 2011-01-19 | 2011-01-19 | Electrolytic capacitor with long service life |
| PCT/CN2011/074208 WO2012097559A1 (en) | 2011-01-19 | 2011-05-18 | Long-life electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100210951A CN102074380B (en) | 2011-01-19 | 2011-01-19 | Electrolytic capacitor with long service life |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102074380A CN102074380A (en) | 2011-05-25 |
| CN102074380B true CN102074380B (en) | 2012-05-09 |
Family
ID=44032886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100210951A Active CN102074380B (en) | 2011-01-19 | 2011-01-19 | Electrolytic capacitor with long service life |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102074380B (en) |
| WO (1) | WO2012097559A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110462885B (en) * | 2017-11-09 | 2022-07-22 | 株式会社Lg化学 | Bar-shaped electrode for cylindrical jelly roll and lithium secondary battery comprising same |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10163059A (en) * | 1996-11-29 | 1998-06-19 | Hitachi Aic Inc | Capacitor provided with safety device |
| JP2000182909A (en) * | 1998-12-14 | 2000-06-30 | Katayama Denki Kk | Aluminum electrolytic capacitor with pressure display and safety mechanism |
| CN2378816Y (en) * | 1999-05-25 | 2000-05-17 | 姜正明 | Full-closed axial aluminium electrolytic capacitor |
| JP2003282374A (en) * | 2002-03-25 | 2003-10-03 | Toshiba Corp | Electrolytic capacitor |
| JP4899898B2 (en) * | 2007-02-02 | 2012-03-21 | 株式会社明電舎 | Electric double layer capacitor |
| CN101494117B (en) * | 2008-12-24 | 2012-11-14 | 佛山市三水日明电子有限公司 | Vertical/horizontal dual purpose aluminum electrolysis capacitor |
| CN201378519Y (en) * | 2009-04-03 | 2010-01-06 | 深圳江浩电子有限公司 | Aluminum electrolytic capacitor cover plate with high safety and long service life |
| CN201927491U (en) * | 2011-01-19 | 2011-08-10 | 深圳三马电器有限公司 | Long-life electrolytic capacitor |
-
2011
- 2011-01-19 CN CN2011100210951A patent/CN102074380B/en active Active
- 2011-05-18 WO PCT/CN2011/074208 patent/WO2012097559A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012097559A1 (en) | 2012-07-26 |
| CN102074380A (en) | 2011-05-25 |
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